Mobile counterweight system for suspended lifting platforms

Abstract

This invention aims to provide a compact, stable, and long-lasting mobile counterweight system for suspended lifting platforms. The invention includes a bridge frame body, a pulley assembly, a movable counterweight assembly, and a lifting platform. The pulley assembly is mounted on the bridge frame body. The movable counterweight assembly and the lifting platform are respectively located on opposite sides of the bridge frame body. The lifting platform is slidably fitted onto the bridge frame body. The movable counterweight assembly includes a first counterweight block and a second counterweight block. The first counterweight block, the second counterweight block, and the lifting platform are all connected to the pulley assembly. The lifting platform can perform lateral reciprocating motion along the bridge frame body. The first counterweight block and the second counterweight block always move in the opposite direction to the lifting platform. This invention applies to the technical field of airport maintenance platform structures.

Description

Technical Field

[0001] This invention relates to the technical field of airport maintenance platform structure, and particularly to a mobile counterweight system for suspended lifting platforms. Background Technology

[0002] With the rapid development of China's aviation industry, the demand for equipment in the aircraft maintenance field is also increasing. Among them, the suspended lifting platform is one of the newest aircraft maintenance platforms in this industry, and its market both domestically and internationally is gradually expanding. However, due to the high technical content and stringent design and manufacturing requirements of this equipment, there are few companies worldwide capable of designing and producing it, resulting in slow design improvements and optimizations. The structural and design characteristics of this equipment, particularly the acceleration generated during the 360-degree rotation and forward / backward movement of the lifting platform, can easily lead to uneven wheel loads on the four wheels. This can affect the stress distribution of structural components such as the steel structure and suspension components, causing uneven wheel load distribution on the bridge traveling wheels, and even leading to one traveling wheel buckling, posing a significant risk to the structure. The lifting platform's numerous degrees of freedom of movement also contribute to this, with different wheel load unevenness patterns in each posture and position. Therefore, solving the problem of uneven wheel loads is a key breakthrough point for this industry. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a mobile counterweight system for suspended lifting platforms that is compact in structure, stable in operation and can effectively improve service life.

[0004] The technical solution adopted in this invention is as follows: This invention includes a cable tray body, a pulley assembly, a movable counterweight assembly, and a lifting platform. The pulley assembly is disposed on the cable tray body, and the movable counterweight assembly and the lifting platform are respectively disposed on opposite sides of the cable tray body. The lifting platform is slidably fitted on the cable tray body. The movable counterweight assembly includes a first counterweight block and a second counterweight block. The first counterweight block, the second counterweight block, and the lifting platform are all connected to the pulley assembly. The lifting platform can perform lateral reciprocating motion along the cable tray body. The first counterweight block and the second counterweight block are always in the opposite direction of motion to the lifting platform.

[0005] Furthermore, the crossbeam of the cable tray body is provided with a number of third counterweights, and the number of third counterweights are evenly distributed.

[0006] Furthermore, the pulley assembly includes a first pulley disposed at one end of the bridge frame body and a second pulley disposed at the other end of the bridge frame body. The first pulley and the second pulley are connected to the lifting platform, the first counterweight, and the second counterweight via steel wires.

[0007] Furthermore, the cable tray body is provided with a plurality of reinforcing beams, which are distributed longitudinally along the cable tray body.

[0008] Furthermore, the bridge frame body is provided with a limiting block that cooperates with the lifting platform.

[0009] Furthermore, the steel wire is provided with a connecting assembly, which includes a movable seat, two sliding wheels rotatably engaged on the movable seat, and a connector connected to the steel wire. The movable seat is correspondingly connected to the first counterweight or the second counterweight, and the sliding wheels are slidably engaged on the cable tray body.

[0010] The present invention has the following beneficial effects:

[0011] A mobile counterweight system for a suspended lifting platform includes a bridge frame body, a pulley assembly, a movable counterweight assembly, and a lifting platform. The pulley assembly is mounted on the bridge frame body, and the movable counterweight assembly and the lifting platform are respectively located on opposite sides of the bridge frame body. The lifting platform is slidably fitted onto the bridge frame body. The movable counterweight assembly includes a first counterweight block and a second counterweight block. The first counterweight block, the second counterweight block, and the lifting platform are all connected to the pulley assembly. The lifting platform can perform lateral reciprocating motion along the bridge frame body. The first counterweight block and the second counterweight block always move in opposite directions to the lifting platform. Therefore, when the lifting platform moves, it drives the first counterweight block and the second counterweight block, making the center of gravity of the invention more stable and the equipment operation more stable. The invention can cope with different uneven distribution of wheel load weight caused by all postures and positions, which helps to improve the reliability of the overall system. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a structural schematic diagram of the present invention from another angle;

[0014] Figure 3 This is a schematic diagram of the structure of the connecting component. Detailed Implementation

[0015] like Figures 1 to 3As shown, in this embodiment, the present invention includes a cable tray body 1, a pulley assembly, a movable counterweight assembly, and a lifting platform 2. The pulley assembly is disposed on the cable tray body 1. The movable counterweight assembly and the lifting platform 2 are respectively disposed on opposite sides of the cable tray body 1. The lifting platform 2 is slidably fitted on the cable tray body 1. The movable counterweight assembly includes a first counterweight block 9 and a second counterweight block 3. The first counterweight block 9, the second counterweight block 3, and the lifting platform 2 are all connected to the pulley assembly. The lifting platform 2 can perform lateral reciprocating motion along the cable tray body 1. The first counterweight block 9 and the second counterweight block 3 are always opposite to the direction of motion of the lifting platform 2.

[0016] As can be seen from the above scheme, according to the left and right movement of the lifting platform 2, the first counterweight 9 and the second counterweight 3 move in the opposite direction to the lifting platform 2. When the lifting platform 2 is on the left, the two sets of counterweights are located on the right and middle of the cable tray, and when the lifting platform 2 is on the right, the two sets of counterweights are located on the left and middle of the cable tray. The present invention is presented by a synchronous pulley system, which sets the movement direction of the counterweights to be opposite to the walking direction of the lifting platform 2, and presents an automatic counterweight and adjustment of the uniform distribution of force through mechanical means.

[0017] A preferred solution is, as Figure 1 and Figure 2 As shown, the crossbeam of the cable tray body 1 is provided with a plurality of third counterweights 4, which are evenly distributed; the pulley assembly includes a first pulley 5 provided at one end of the cable tray body 1 and a second pulley 6 provided at the other end of the cable tray body 1, the first pulley 5 and the second pulley 6 being connected to the lifting platform 2, the first counterweight 9 and the second counterweight 3 via steel wires 7; the cable tray body 1 is provided with a plurality of reinforcing beams 8, which are distributed longitudinally along the cable tray body 1; the cable tray body 1 is provided with a limiting block that cooperates with the lifting platform 2.

[0018] As can be seen from the above scheme, the setting of the reinforcing beam 8 increases the stability of the equipment during operation; the setting of the limiting block can effectively ensure the accuracy of the lifting platform 2 when it is displaced to the limiting position.

[0019] In a preferred embodiment, the steel wire 7 is provided with a connecting assembly, which includes a movable seat 10, two sliding wheels 11 rotatably engaged on the movable seat 10, and a connector 12 connected to the steel wire 7. The movable seat 10 is correspondingly connected to the first counterweight 3 or the second counterweight 9. The sliding wheels 11 are slidably engaged on the cable tray body 1. Specifically, both ends of the counterweight are connected to the connecting assembly. When the counterweight moves, it slides on the cable tray body 1 through the sliding wheels 11 on the connecting assemblies at both ends, making the movement of the counterweight more stable. The movable seat 10 has a pseudo-triangular structure, and the number of sliding wheels 11 on the movable seat 10 is two, making its movement smoother and more stable.

[0020] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A mobile counterweight system for a suspended lifting platform, characterized in that: It includes a cable tray body (1), a pulley assembly, a movable counterweight assembly, and a lifting platform (2). The pulley assembly is located on the cable tray body (1). The movable counterweight assembly and the lifting platform (2) are located on opposite sides of the cable tray body (1). The lifting platform (2) is slidably fitted on the cable tray body (1). The movable counterweight assembly includes a first counterweight block (9) and a second counterweight block (3). The first counterweight block (9), the second counterweight block (3), and the lifting platform (2) are all connected to the pulley assembly. The lifting platform (2) can make a lateral reciprocating motion along the cable tray body (1). The first counterweight block (9) and the second counterweight block (3) are always opposite to the direction of motion of the lifting platform (2). The crossbeam of the bridge frame body (1) is provided with a number of third counterweights (4), and the number of third counterweights (4) are evenly distributed. The pulley assembly includes a first pulley (5) disposed at one end of the bridge frame body (1) and a second pulley (6) disposed at the other end of the bridge frame body (1). The first pulley (5) and the second pulley (6) are connected to the lifting platform (2), the first counterweight (9) and the second counterweight (3) by steel wire (7). The steel wire (7) is provided with a connecting component, which includes a movable seat (10), two sliding wheels (11) rotatably engaged on the movable seat (10), and a connector (12) connected to the steel wire (7). The movable seat (10) is correspondingly connected to the first counterweight (9) or the second counterweight (3), and the sliding wheels (11) are slidably engaged on the bridge frame body (1).

2. The mobile counterweight system for a suspended lifting platform according to claim 1, characterized in that: The cable tray body (1) is provided with a number of reinforcing beams (8), and the number of reinforcing beams (8) are distributed longitudinally along the cable tray body (1).

3. The mobile counterweight system for a suspended lifting platform according to claim 1, characterized in that: The bridge frame body (1) is provided with a limiting block that cooperates with the lifting platform (2).

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