LIFTING APPARATUS WITH SCISSOR LINKAGE AND COUNTERBALANCE UNIT

Abstract

Disclosed is a lifting apparatus comprising a base structure, an elevating platform positioned above said base structure, a scissor linkage unit interposed between said base structure and said elevating platform, said scissor linkage unit comprising intersecting arms, an operating member engaging with said scissor linkage unit, and a counterbalance unit associated with said operating member to assist in lifting said elevating platform.

Specification

Description:Field of the Invention


The present disclosure generally relates to lifting mechanisms. Further, the present disclosure particularly relates to a lifting apparatus employing a scissor linkage unit.
Background
The background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
Mechanical lifting systems have been widely utilized across various industries to raise or lower loads. Early implementations of lifting systems were predominantly based on manual mechanisms requiring significant human effort. These systems were frequently dependent on pulley arrangements or lever-based systems, both of which required direct physical engagement for operation. Although such systems facilitated the movement of heavy objects, they were associated with considerable drawbacks. The need for continuous manual input resulted in labour-intensive operations. Further, the lack of automation reduced the efficiency of the systems, particularly in scenarios involving repetitive lifting operations.
Over time, advancements led to the introduction of more complex lifting systems involving hydraulic or pneumatic mechanisms. Hydraulic lifting systems became a preferred method due to the force multiplication enabled by pressurized fluids. The lifting process in hydraulic systems typically involved a piston mechanism where fluid pressure was applied to elevate or lower platforms or other lifting surfaces. However, these systems were associated with significant limitations. One of the primary disadvantages of hydraulic lifting systems was the complexity associated with maintaining consistent fluid pressure. The presence of seals and other components introduced the potential for leaks, which resulted in loss of efficiency and operational delays. Moreover, hydraulic systems were prone to temperature-dependent performance variations, particularly in environments with fluctuating temperatures. This necessitated regular maintenance and monitoring, further contributing to operational costs and downtime.
Pneumatic lifting systems, which operated by compressing air to achieve lifting, presented another alternative to hydraulic systems. Pneumatic systems offered certain advantages, such as quicker response times and reduced sensitivity to temperature changes. However, these systems were not without shortcomings. One of the major challenges associated with pneumatic systems was the inconsistency in force application, particularly when precise control over lifting speed and height was required. Furthermore, pneumatic systems were often associated with noise generation due to the rapid expulsion of air, making such systems less desirable in environments where quiet operation was essential. In addition, pneumatic lifting systems required the continuous operation of compressors, which led to higher energy consumption and operational costs.
In addition to hydraulic and pneumatic systems, scissor lift mechanisms were developed to provide a more compact and space-efficient solution for lifting operations. Scissor lifts generally comprised a set of crossing arms connected at pivot points, which allowed for vertical movement when force was applied. The scissor lift mechanism was widely adopted due to its ability to fold into a compact form when not in use. This made scissor lifts ideal for environments where space was limited. However, conventional scissor lift systems often required external sources of force, such as hydraulic or pneumatic actuators, to perform the lifting operation. Consequently, the limitations associated with hydraulic and pneumatic systems, as previously discussed, were inherited by scissor lift mechanisms as well.
Another drawback of traditional scissor lift mechanisms involved stability during operation. The use of pivot points within the scissor arms introduced the potential for lateral movement, especially when heavy loads were being lifted or lowered. This instability necessitated the use of additional guide rails or supports, which increased the complexity of the system. Furthermore, such scissor lift systems typically lacked effective mechanisms to assist in balancing the load during lifting. As a result, unbalanced loads often led to uneven lifting, which could cause wear and tear on the scissor arms and other components over time. This necessitated frequent maintenance, further increasing the long-term operational costs of scissor lift systems.
In light of the above discussion, there exists an urgent need for solutions that overcome the problems associated with conventional systems and/or techniques for lifting heavy loads in a controlled and efficient manner.
Summary
The following presents a simplified summary of various aspects of this disclosure in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements nor delineate the scope of such aspects. Its purpose is to present some concepts of this disclosure in a simplified form as a prelude to the more detailed description that is presented later.
The following paragraphs provide additional support for the claims of the subject application.
An objective of the present disclosure aims to provide a lifting apparatus that improves the lifting efficiency, stability, and smoothness of the elevating platform during operations. The system of the present disclosure further aims to enhance alignment, vibration reduction, and balance while facilitating lifting operations.
In an aspect, the present disclosure provides a lifting apparatus comprising a base structure, an elevating platform positioned above said base structure, and a scissor linkage unit interposed between said base structure and said elevating platform. Said scissor linkage unit comprises intersecting arms, an operating member engaging with said scissor linkage unit, and a counterbalance unit associated with said operating member to assist in lifting said elevating platform.
The system of the present disclosure enables improved stability during lifting operations through stabilizing braces connected between said intersecting arms and said elevating platform. Such stabilizing braces enhance the stability of the elevating platform during lifting.
Furthermore, the intersecting arms are pivotally connected at a central pivot point aligned with the operating member to enable synchronized movement between the scissor linkage unit and the operating member, thereby improving the lifting efficiency of the elevating platform.
Moreover, the operating member is rotatably mounted on the base structure and extends longitudinally parallel to the intersecting arms. Such a parallel orientation enables the efficient transfer of force from the operating member to the scissor linkage unit.
Further, the counterbalance unit comprises a counterweight disposed within the base structure and connected to the operating member via a pulley assembly. Such a connection balances the load on the scissor linkage unit, enabling smoother lifting of the elevating platform.
Additionally, the elevating platform is guided by vertical tracks affixed to the base structure. Said vertical tracks are aligned with the scissor linkage mechanism to maintain the alignment of the elevating platform during lifting.
Moreover, the scissor linkage unit comprises damping elements intersecting with the intersecting arms. Such damping elements reduce vibrations transmitted to the elevating platform during operations.
Furthermore, the base structure incorporates adjustable feet to compensate for uneven surfaces, thereby enabling stable operations of the lifting apparatus.
Additionally, the operating member is powered by a hydraulic actuator, which provides smooth and controlled lifting motions of the elevating platform.
Moreover, the base structure includes a rail assembly extending longitudinally along said base structure. Such a rail assembly supports a ballast weight associated with the counterbalance unit, wherein said ballast weight moves in synchronized relation with the operating member to enhance the lifting efficiency and balance of the elevating platform.

Brief Description of the Drawings


The features and advantages of the present disclosure would be more clearly understood from the following description taken in conjunction with the accompanying drawings in which:
FIG. 1 illustrates a lifting apparatus (100), in accordance with the embodiments of the present disclosure.
FIG. 2 illustrates the sequence of interactions in the lifting apparatus (100), in accordance with the embodiments of the present disclosure.
Detailed Description
In the following detailed description of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown, by way of illustration, specific embodiments in which the invention may be practiced. In the drawings, like numerals describe substantially similar components throughout the several views. These embodiments are described in sufficient detail to claim those skilled in the art to practice the invention. Other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims and equivalents thereof.
The use of the terms "a" and "an" and "the" and "at least one" and similar referents in the context of describing the invention (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The use of the term "at least one" followed by a list of one or more items (for example, "at least one of A and B") is to be construed to mean one item selected from the listed items (A or B) or any combination of two or more of the listed items (A and B), unless otherwise indicated herein or clearly contradicted by context. The terms "comprising," "having," "including," and "containing" are to be construed as open-ended terms (i.e., meaning "including, but not limited to,") unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
Pursuant to the "Detailed Description" section herein, whenever an element is explicitly associated with a specific numeral for the first time, such association shall be deemed consistent and applicable throughout the entirety of the "Detailed Description" section, unless otherwise expressly stated or contradicted by the context.
As used herein, the term "lifting apparatus" refers to a mechanical device designed to elevate or lower objects by means of a movable platform supported by a base structure. The lifting apparatus generally comprises several key components, including a base structure, an elevating platform, a scissor linkage unit, an operating member, and a counterbalance unit, all of which work together to achieve vertical movement. Said lifting apparatus is typically employed in various industries for material handling, construction, maintenance, or other applications requiring controlled lifting of heavy loads. The lifting apparatus may be manually operated or powered by hydraulic, pneumatic, or electric systems, depending on the intended use and load capacity. Additionally, the lifting apparatus may include safety mechanisms such as locks or brakes to prevent accidental lowering or overextension of the platform. The lifting apparatus is constructed using materials capable of withstanding heavy loads and frequent operation, ensuring durability and reliable performance in a range of environments.
As used herein, the term "base structure" refers to the foundational component that supports other elements of the lifting apparatus. The base structure is typically constructed from durable materials such as steel or reinforced composites to provide stability and strength during operation. Said base structure may include additional features, such as mounting points or connectors, to enable secure placement on a surface or attachment to surrounding structures. Additionally, the base structure may accommodate various mechanical components that work in conjunction with the elevating platform and scissor linkage unit. The structural design of the base structure ensures that it withstands vertical and lateral forces generated during lifting operations. Furthermore, the base structure may be fabricated in different sizes and configurations to support varying loads depending on the intended use of the lifting apparatus. The base structure acts as the primary support for the lifting operation of the elevating platform.
As used herein, the term "elevating platform" refers to the load-bearing surface that is positioned above the base structure and supported by the scissor linkage unit. The elevating platform is constructed from rigid and durable materials such as metal or composite to ensure its capacity to lift and sustain the weight of objects during elevation. The elevating platform moves vertically relative to the base structure by the action of the scissor linkage unit, allowing the lifting apparatus to raise or lower the load. The design of the elevating platform may also include safety rails or protective barriers to prevent displacement of the load during operation. Additionally, the platform may be modified in shape and size to accommodate various types of loads, depending on the application of the lifting apparatus.
As used herein, the term "scissor linkage unit" refers to a mechanical assembly interposed between the base structure and the elevating platform. The scissor linkage unit consists of a series of intersecting arms that expand and contract to raise or lower the elevating platform. Said scissor linkage unit is typically composed of robust materials such as steel to ensure longevity and consistent performance. The design of the scissor linkage unit allows for smooth vertical movement while maintaining stability. The intersecting arms of the scissor linkage unit create a stable and balanced mechanism that distributes the load evenly across the lifting apparatus. Additionally, the scissor linkage unit may include pivot points or bearings to reduce friction and facilitate smoother operation.
As used herein, the term "intersecting arms" refers to the mechanical components of the scissor linkage unit that cross over one another to form a collapsible and expandable structure. The intersecting arms are typically made of strong materials such as steel or alloy to ensure the stability and strength of the scissor linkage unit during lifting and lowering operations. Said intersecting arms are connected at pivot points, allowing them to fold or extend in a scissor-like motion. The arrangement of the intersecting arms enables the elevating platform to move vertically in a smooth and controlled manner by transferring force from the operating member. Additionally, the intersecting arms may include bearings or bushings at the pivot points to reduce friction and improve the efficiency of the scissor linkage unit.
As used herein, the term "operating member" refers to the component that engages with the scissor linkage unit to facilitate the lifting or lowering of the elevating platform. The operating member may include mechanical, hydraulic, or pneumatic components depending on the specific design of the lifting apparatus. Said operating member interacts with the scissor linkage unit, causing the intersecting arms to move, thereby raising or lowering the elevating platform. The operating member is typically constructed from durable materials that can withstand repeated use and high operational loads. Additionally, the operating member may be manually operated or powered by external energy sources such as electricity or hydraulic pressure, depending on the application of the lifting apparatus.
As used herein, the term "counterbalance unit" refers to a mechanical component associated with the operating member to assist in the lifting of the elevating platform. The counterbalance unit typically consists of springs, weights, or pneumatic systems designed to offset the weight of the elevating platform and the load being lifted. Said counterbalance unit enables the operating member to lift the platform with reduced effort, ensuring smoother and more controlled movement. The counterbalance unit is typically positioned in proximity to the scissor linkage unit to optimize force distribution and reduce the strain on other components of the lifting apparatus.
FIG. 1 illustrates a lifting apparatus (100), in accordance with the embodiments of the present disclosure. In an embodiment, the lifting apparatus (100) includes a base structure (102) positioned as the foundational component of the apparatus. The base structure (102) is typically constructed from durable materials, such as metal or reinforced composites, to provide adequate support for the entire system. Said base structure (102) may feature a generally rectangular or square shape, depending on the design and intended use. The base structure (102) may also include mounting holes or brackets to allow secure attachment to a surface or other support structures, providing stability during operation. The base structure (102) is responsible for distributing the weight of the elevating platform (104) and any load placed upon it. Additionally, the base structure (102) may include leveling mechanisms, such as adjustable feet or pads, to maintain a flat and stable orientation on uneven surfaces. Such leveling mechanisms assist in ensuring smooth operation of the lifting system. The base structure (102) may further incorporate channels or tracks to guide the scissor linkage unit (106) during the vertical movement of the elevating platform (104), preventing lateral shifts or misalignment during operation.
In an embodiment, the lifting apparatus (100) includes an elevating platform (104) positioned above the base structure (102). Said elevating platform (104) functions as the primary load-bearing component of the apparatus, designed to carry various objects during lifting operations. The elevating platform (104) is constructed from durable materials, such as steel or aluminum, capable of withstanding heavy loads while maintaining structural integrity. The elevating platform (104) may include safety features, such as raised edges or side rails, to prevent objects from sliding off during elevation. Additionally, the surface of the elevating platform (104) may feature non-slip textures or coatings to further secure the load. The platform (104) is positioned to move vertically relative to the base structure (102) through the interaction of the scissor linkage unit (106). The dimensions of the elevating platform (104) may vary depending on the intended application, with options for customization to suit specific load sizes or shapes. In some variations, the elevating platform (104) may also include attachment points for additional fixtures, such as straps or clamps, to hold the load in place during lifting.
In an embodiment, the lifting apparatus (100) includes a scissor linkage unit (106) interposed between the base structure (102) and the elevating platform (104). Said scissor linkage unit (106) is composed of intersecting arms (108), typically arranged in pairs, that expand and contract to facilitate the vertical movement of the elevating platform (104). The arms (108) are generally made from metal or other high-strength materials to withstand the forces applied during operation. Each pair of intersecting arms (108) is pivotally connected at the center, allowing the scissor linkage unit (106) to elongate and shorten in a controlled manner as the platform (104) is raised or lowered. The ends of the scissor arms (108) are connected to the base structure (102) and the elevating platform (104), respectively, ensuring stable and guided movement. The design of the scissor linkage unit (106) allows for smooth vertical travel without lateral displacement. The number of intersecting arms (108) used in the scissor linkage unit (106) may vary depending on the height and load capacity requirements of the lifting apparatus (100). Additional arms (108) may be added to increase the overall lifting capacity or height range.
In an embodiment, the lifting apparatus (100) includes an operating member (110) engaging with the scissor linkage unit (106) to control the movement of the elevating platform (104). The operating member (110) may comprise a hydraulic cylinder, pneumatic actuator, or mechanical screw jack, depending on the specific design of the apparatus. Said operating member (110) applies force to the scissor linkage unit (106), causing the arms (108) to expand or contract and thereby raising or lowering the platform (104). The operating member (110) is generally positioned beneath or alongside the scissor linkage unit (106), ensuring a direct and controlled transmission of force. In some configurations, the operating member (110) may be manually operated through a hand crank or lever. Alternatively, automated systems, such as electric motors, may be used to activate the operating member (110), allowing for remote control or preset lifting operations. The operating member (110) is designed to provide smooth and consistent movement, preventing sudden shifts or jerks that could destabilize the load during elevation.
In an embodiment, the lifting apparatus (100) includes a counterbalance unit (112) associated with the operating member (110) to assist in lifting the elevating platform (104). Said counterbalance unit (112) may comprise a set of counterweights, springs, or gas-filled cylinders designed to offset the weight of the elevating platform (104) and any load placed upon it. The counterbalance unit (112) works in conjunction with the operating member (110) to reduce the force required to lift the platform (104), thereby improving the efficiency and ease of operation. The counterbalance unit (112) is typically positioned adjacent to or integrated with the operating member (110), ensuring a balanced distribution of force during movement. The size and weight of the counterbalance unit (112) may be adjusted based on the load capacity of the lifting apparatus (100), allowing for customization to specific operational requirements. In some embodiments, the counterbalance unit (112) may include adjustable features, such as tension settings or removable weights, to fine-tune the balance for different load conditions.
In an embodiment, the lifting apparatus (100) includes a scissor linkage unit (106) further comprising stabilizing braces connected between the intersecting arms (108) and the elevating platform (104). Said stabilizing braces are rigid or semi-rigid structural members, typically made of metal or composite materials, that span from the arms (108) to the platform (104) to enhance the stability of the lifting mechanism. The stabilizing braces provide lateral support to the elevating platform (104) during its vertical movement, minimizing side-to-side motion or wobbling. The braces can be pivotally connected to the arms (108) at various points along the scissor linkage unit (106) and affixed to the underside of the elevating platform (104). The inclusion of such stabilizing braces allows for a more even distribution of force throughout the scissor linkage unit (106), particularly when the platform (104) is carrying heavy or uneven loads. This improves the overall structural integrity of the lifting apparatus (100), preventing unwanted oscillations or misalignments that could otherwise compromise the safe and smooth operation of the elevating platform (104). Additionally, the design of the stabilizing braces may vary in size and number depending on the load capacity and dimensions of the elevating platform (104), offering versatility for various industrial applications.
In an embodiment, the lifting apparatus (100) includes intersecting arms (108) that are pivotally connected at a central pivot point aligned with the operating member (110). The central pivot point is a critical juncture where the arms (108) of the scissor linkage unit (106) intersect and rotate as the elevating platform (104) is raised or lowered. The alignment between said pivot point and the operating member (110) enables synchronized movement of the scissor linkage unit (106), allowing for efficient lifting and lowering operations. The operating member (110) applies force to the arms (108), and due to this alignment, the pivot point acts as a fulcrum, ensuring that the vertical movement of the elevating platform (104) is consistent and balanced. Such a configuration reduces mechanical strain on the arms (108) and the operating member (110), thereby improving the durability of the lifting apparatus (100). The pivotally connected arms (108) may be joined using robust hinges or pins that enable smooth rotation while withstanding the load stresses associated with repeated use. The alignment also helps maintain the structural integrity of the entire scissor linkage unit (106) by evenly distributing the mechanical forces across the arms (108).
In an embodiment, the operating member (110) of the lifting apparatus (100) is rotatably mounted on the base structure (102) and extends longitudinally parallel to the intersecting arms (108). Said operating member (110) is typically a mechanical actuator, such as a hydraulic piston or screw jack, that directly engages the scissor linkage unit (106) to control the movement of the elevating platform (104). By mounting the operating member (110) in a parallel orientation to the intersecting arms (108), the transfer of force from the operating member (110) to the scissor linkage unit (106) is optimized. This parallel alignment ensures that the force applied by the operating member (110) is evenly distributed along the length of the arms (108), reducing the risk of misalignment or torsional stress during operation. The rotational mounting of the operating member (110) on the base structure (102) allows for smooth and controlled movement as the scissor linkage unit (106) expands or contracts. Such a configuration enhances the mechanical efficiency of the lifting apparatus (100), as the operating member (110) can apply force more directly to the scissor linkage unit (106) without unnecessary lateral movement or energy loss.
In an embodiment, the counterbalance unit (112) of the lifting apparatus (100) comprises a counterweight disposed within the base structure (102) and connected to the operating member (110) via a pulley assembly. Said counterweight serves to offset the load of the elevating platform (104), making the lifting operation smoother and less energy-intensive. The counterweight is typically composed of dense materials, such as metal or concrete, and is housed within a compartment of the base structure (102) to ensure stability and protection from external elements. The pulley assembly, which connects the counterweight to the operating member (110), includes a series of pulleys and cables that balance the force exerted on the scissor linkage unit (106). As the operating member (110) lifts the elevating platform (104), the counterweight moves in the opposite direction, effectively reducing the amount of force needed to elevate the platform (104). This arrangement also minimizes the strain on the operating member (110) and the scissor linkage unit (106), prolonging the operational lifespan of the lifting apparatus (100).
In an embodiment, the elevating platform (104) of the lifting apparatus (100) is guided by vertical tracks affixed to the base structure (102). Said vertical tracks are precisely aligned with the scissor linkage unit (106) to maintain the proper orientation of the elevating platform (104) during lifting operations. The tracks are generally constructed from metal or other rigid materials and are securely fastened to the base structure (102) to ensure that the platform (104) moves vertically without lateral deviation. The scissor linkage unit (106) interacts with the tracks through guide pins or rollers attached to the underside of the elevating platform (104). As the scissor linkage unit (106) expands or contracts, the guide pins or rollers travel along the vertical tracks, maintaining a stable and controlled movement. The vertical tracks also prevent misalignment or tilting of the platform (104) under uneven loads, enhancing the safety and reliability of the lifting apparatus (100). The length and strength of the vertical tracks may be adjusted depending on the lifting height and load requirements of the apparatus (100).
In an embodiment, the scissor linkage unit (106) of the lifting apparatus (100) comprises damping elements intersecting with the arms (108). Said damping elements are designed to reduce vibrations and absorb shocks that may be transmitted to the elevating platform (104) during lifting operations. The damping elements may include rubber pads, springs, or hydraulic dampers positioned at key points along the scissor linkage unit (106), particularly where the arms (108) intersect. These components function to cushion the movement of the scissor linkage unit (106), preventing excessive vibration that could destabilize the load on the elevating platform (104). The inclusion of damping elements helps to protect both the lifting apparatus (100) and the objects being lifted from potential damage caused by sudden movements or external forces. Additionally, the damping elements improve the overall smoothness of the lifting operation, making the apparatus (100) more suitable for delicate or precision-based tasks.
In an embodiment, the base structure (102) of the lifting apparatus (100) is equipped with adjustable feet to compensate for uneven surfaces. Said adjustable feet are typically mounted at the four corners of the base structure (102) and allow the apparatus (100) to be leveled on irregular or sloped surfaces. The adjustable feet may include threaded rods or hydraulic mechanisms that can be extended or retracted to achieve the desired height and stability. By adjusting the height of each foot individually, the user can ensure that the base structure (102) remains level, which is critical for the safe operation of the lifting apparatus (100). The adjustable feet may also feature non-slip pads or rubberized surfaces to improve grip and prevent movement of the apparatus (100) during lifting operations. Such features make the apparatus (100) versatile for use in various environments, including construction sites, warehouses, or uneven factory floors.
In an embodiment, the operating member (110) of the lifting apparatus (100) is powered by a hydraulic actuator to provide smooth and controlled lifting motions of the elevating platform (104). Said hydraulic actuator is typically a cylinder filled with pressurized fluid that generates force when the fluid is compressed or released. The hydraulic actuator is connected to the scissor linkage unit (106), applying a consistent force to raise or lower the elevating platform (104). The use of a hydraulic actuator allows for precise control over the speed and direction of the platform's movement, reducing the likelihood of sudden or jerky motions that could destabilize the load. The hydraulic system is typically equipped with valves and pressure regulators to maintain consistent performance under varying load conditions. Additionally, the hydraulic actuator may include a manual override feature, allowing the lifting apparatus (100) to be operated in the event of power failure or other system malfunctions.
In an embodiment, the base structure (102) of the lifting apparatus (100) comprises a rail assembly extending longitudinally along said base structure (102). Said rail assembly (134) supports a ballast weight associated with the counterbalance unit (112), with the ballast weight moving in synchronized relation with the operating member (110). The rail assembly (134) consists of parallel tracks or channels securely mounted on the base structure (102), along which the ballast weight travels as the elevating platform (104) is raised or lowered. The movement of the ballast weight is coordinated with the action of the operating member (110) through mechanical linkages or cables, ensuring that the forces acting on the scissor linkage unit (106) remain balanced throughout the lifting process. The rail assembly (134) provides a guided path for the ballast weight, preventing lateral displacement and maintaining the equilibrium of the lifting apparatus (100) during operation. This system enhances the stability and safety of the lifting mechanism, particularly when handling heavy or uneven loads.
FIG. 2 illustrates the sequence of interactions in the lifting apparatus (100), in accordance with the embodiments of the present disclosure. The sequence of interactions in a lifting apparatus (100) comprising a base structure (102), an elevating platform (104), a scissor linkage unit (106) with intersecting arms (108), an operating member (110), and a counterbalance unit (112). Initially, the base structure (102) is positioned as the foundation, followed by positioning the elevating platform (104) above it. The scissor linkage unit (106) is placed between the base structure (102) and the elevating platform (104), supporting vertical movement. The operating member (110) is engaged with the scissor linkage unit (106), controlling the movement of the scissor linkage. The counterbalance unit (112) is connected to the operating member (110) to assist in the lifting process by balancing the load. As the operating member (110) activates the scissor linkage (106), the elevating platform (104) is lifted smoothly with assistance from the counterbalance unit (112), ensuring stable and controlled vertical motion.
In an embodiment, the base structure (102) serves as the foundational element of the lifting apparatus (100), providing support for all other components and maintaining the structural integrity during lifting operations. The base structure (102) is designed to withstand the forces generated by the weight of the elevating platform (104) and any load applied to said platform (104). The base structure (102) evenly distributes these forces, reducing mechanical stress on individual components and preventing localized wear or deformation. Additionally, the stable design of the base structure (102) minimizes unwanted lateral movement, ensuring that the lifting apparatus (100) remains balanced throughout operation. The positioning of the base structure (102) provides a secure foundation for the scissor linkage unit (106), allowing the unit to operate smoothly without misalignment or loss of stability. Overall, the base structure (102) significantly contributes to the durability and operational reliability of the lifting apparatus (100).
In an embodiment, the elevating platform (104) positioned above the base structure (102) is the load-bearing surface of the lifting apparatus (100). The elevating platform (104) provides the necessary surface area to accommodate various types of loads, including bulky or heavy objects, while maintaining stability throughout the lifting process. The platform (104) is designed to move vertically without deviating from its path, due to its interaction with the scissor linkage unit (106). Its durable construction prevents deformation or damage, even when subjected to substantial weight. The vertical positioning of the platform (104) allows it to interact efficiently with the scissor linkage unit (106), converting the horizontal expansion of the unit into controlled vertical movement. This interaction ensures smooth lifting and lowering motions, reducing the risk of jerking or abrupt movements that could destabilize the load.
In an embodiment, the scissor linkage unit (106) interposed between the base structure (102) and the elevating platform (104) consists of intersecting arms (108) designed to facilitate vertical movement. The arms (108) expand and contract to raise or lower the elevating platform (104), converting linear motion from the operating member (110) into smooth vertical displacement. The intersecting design of the arms (108) enables the scissor linkage unit (106) to maintain balance and alignment during operation, preventing lateral shifts or tilting of the platform (104). The unit's (106) ability to distribute mechanical forces evenly across the intersecting arms (108) reduces localized stress and extends the overall operational lifespan of the apparatus (100). The scissor linkage unit (106) allows for precise control over the height of the elevating platform (104), ensuring consistent and predictable lifting motion under various load conditions.
In an embodiment, the operating member (110) engages with the scissor linkage unit (106) to control the movement of the elevating platform (104). The operating member (110) provides the necessary mechanical force to expand or contract the scissor linkage unit (106), facilitating vertical movement. The direct engagement between the operating member (110) and the scissor linkage unit (106) ensures efficient transmission of force, minimizing energy loss during operation. The operating member (110) can be powered by various mechanisms, such as a hydraulic actuator, allowing for controlled lifting and lowering motions. The smooth and consistent operation of the operating member (110) reduces the risk of sudden movements that could destabilize the elevating platform (104) or damage the load. The engagement also enhances the overall performance of the lifting apparatus (100), allowing for smooth operation under varying load conditions.
In an embodiment, the counterbalance unit (112) associated with the operating member (110) assists in lifting the elevating platform (104). Said counterbalance unit (112) typically comprises a counterweight or similar mechanism designed to offset the weight of the platform (104) and any applied load, reducing the amount of force required from the operating member (110). This balance of forces enhances the operational efficiency of the lifting apparatus (100) by minimizing the energy required to lift heavy loads. The counterbalance unit (112) ensures smoother and more controlled lifting and lowering movements, preventing sudden drops or jerks that could destabilize the platform (104). Additionally, the counterbalance unit (112) reduces mechanical strain on the scissor linkage unit (106) and the operating member (110), extending the operational lifespan of the lifting apparatus (100).
In an embodiment, the scissor linkage unit (106) further comprises stabilizing braces connected between the intersecting arms (108) and the elevating platform (104). These stabilizing braces add rigidity to the scissor linkage unit (106), reducing unwanted lateral movement of the platform (104) during lifting operations. The braces enhance the structural stability of the scissor linkage unit (106), allowing the lifting apparatus (100) to handle heavier or unevenly distributed loads without losing balance. By providing additional support to the intersecting arms (108), the stabilizing braces improve the overall stability and safety of the lifting process. The braces also reduce the risk of tilting or wobbling, particularly when the elevating platform (104) is fully extended, ensuring that the load remains securely positioned throughout the lifting cycle.
In an embodiment, the intersecting arms (108) of the scissor linkage unit (106) are pivotally connected at a central pivot point aligned with the operating member (110). This central pivot point allows the intersecting arms (108) to rotate smoothly as they expand and contract, facilitating the vertical movement of the elevating platform (104). The alignment between the pivot point and the operating member (110) ensures synchronized motion between the two components,












I/We Claims


A lifting apparatus (100) comprising:
a base structure (102);
an elevating platform (104) positioned above said base structure (102);
a scissor linkage unit (106) interposed between said base structure (102) and said elevating platform (104), said unit (106) comprising intersecting arms (108);
an operating member (110) engaging with said scissor linkage unit (106); and
a counterbalance unit (112) associated with said operating member (110) to assist in lifting said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said scissor linkage unit (106) further comprises stabilizing braces connected between said intersecting arms (108) and said elevating platform (104), such stabilizing braces enhancing the stability of said elevating platform (104) during lifting operations.
The lifting apparatus (100) of claim 1, wherein said intersecting arms (108) are pivotally connected at a central pivot point aligned with said operating member (110), such alignment facilitating synchronized movement between said scissor linkage unit (106) and said operating member (110) to improve the lifting efficiency of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said operating member (110) is rotatably mounted on said base structure (102) and extends longitudinally parallel to said intersecting arms (108), such parallel orientation allowing efficient transfer of force from said operating member (110) to said scissor linkage unit (106).
The lifting apparatus (100) of claim 1, wherein said counterbalance unit (112) comprises a counterweight disposed within said base structure (102) and connected to said operating member (110) via a pulley assembly, such connection balancing the load on said scissor linkage unit (106) to facilitate smoother lifting of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said elevating platform (104) is guided by vertical tracks affixed to said base structure (102), said vertical tracks being aligned with said scissor linkage mechanism (106) to maintain the alignment of said elevating platform (104) during lifting.
The lifting apparatus (100) of claim 1, wherein said scissor linkage unit (106) comprises damping elements intersecting with said intersecting arms (108), such damping elements reducing vibrations transmitted to said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said base structure (102) is equipped with adjustable feet to compensate for uneven surfaces.
The lifting apparatus (100) of claim 1, wherein said operating member (110) is powered by a hydraulic actuator to provide smooth and controlled lifting motions of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said base structure (102) comprises a rail assembly extending longitudinally along said base structure (102), such rail assembly (134) supporting a ballast weight associated with said counterbalance unit, said ballast weight moving in synchronized relation with said operating member (110) to enhance the lifting efficiency and balance of said elevating platform (104).




Disclosed is a lifting apparatus comprising a base structure, an elevating platform positioned above said base structure, a scissor linkage unit interposed between said base structure and said elevating platform, said scissor linkage unit comprising intersecting arms, an operating member engaging with said scissor linkage unit, and a counterbalance unit associated with said operating member to assist in lifting said elevating platform.

, Claims:I/We Claims


A lifting apparatus (100) comprising:
a base structure (102);
an elevating platform (104) positioned above said base structure (102);
a scissor linkage unit (106) interposed between said base structure (102) and said elevating platform (104), said unit (106) comprising intersecting arms (108);
an operating member (110) engaging with said scissor linkage unit (106); and
a counterbalance unit (112) associated with said operating member (110) to assist in lifting said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said scissor linkage unit (106) further comprises stabilizing braces connected between said intersecting arms (108) and said elevating platform (104), such stabilizing braces enhancing the stability of said elevating platform (104) during lifting operations.
The lifting apparatus (100) of claim 1, wherein said intersecting arms (108) are pivotally connected at a central pivot point aligned with said operating member (110), such alignment facilitating synchronized movement between said scissor linkage unit (106) and said operating member (110) to improve the lifting efficiency of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said operating member (110) is rotatably mounted on said base structure (102) and extends longitudinally parallel to said intersecting arms (108), such parallel orientation allowing efficient transfer of force from said operating member (110) to said scissor linkage unit (106).
The lifting apparatus (100) of claim 1, wherein said counterbalance unit (112) comprises a counterweight disposed within said base structure (102) and connected to said operating member (110) via a pulley assembly, such connection balancing the load on said scissor linkage unit (106) to facilitate smoother lifting of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said elevating platform (104) is guided by vertical tracks affixed to said base structure (102), said vertical tracks being aligned with said scissor linkage mechanism (106) to maintain the alignment of said elevating platform (104) during lifting.
The lifting apparatus (100) of claim 1, wherein said scissor linkage unit (106) comprises damping elements intersecting with said intersecting arms (108), such damping elements reducing vibrations transmitted to said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said base structure (102) is equipped with adjustable feet to compensate for uneven surfaces.
The lifting apparatus (100) of claim 1, wherein said operating member (110) is powered by a hydraulic actuator to provide smooth and controlled lifting motions of said elevating platform (104).
The lifting apparatus (100) of claim 1, wherein said base structure (102) comprises a rail assembly extending longitudinally along said base structure (102), such rail assembly (134) supporting a ballast weight associated with said counterbalance unit, said ballast weight moving in synchronized relation with said operating member (110) to enhance the lifting efficiency and balance of said elevating platform (104).

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