A safety device for a scissor lift aerial work platform

Abstract

This utility model relates to a safety platform, belonging to the technical field of aerial work equipment, specifically a safety device for a scissor lift aerial work platform. It includes a side fixing plate located at the bottom of the safety platform, with a main bearing rotatably connected to the inner wall of the side fixing plate. It also includes multiple drums coaxially fixed to the main bearing, with connecting gears coaxially fixed to the surface of the main bearing. A drive motor is located at the bottom of the safety platform, with a drive gear fixedly connected to its output end. The drive gear meshes with the connecting gear. This utility model provides a force to keep the platform level, thereby achieving a stable anti-tipping effect and solving the problem of insufficient safety protection in existing scissor lift aerial work platforms when raised to a certain height.

Description

Technical Field

[0001] This utility model relates to the field of aerial work equipment technology, and in particular to a safety device for a scissor lift aerial work platform. Background Technology

[0002] When carrying out aerial work, it is usually necessary to use some lifting equipment to bring the workers to the working height, among which the scissor lift is a commonly used one.

[0003] In existing technologies, in the safety devices of scissor lift aerial work platforms, when the platform rises to the rated height, the scissor arm acts as a platform support device. As the height increases, its projected area decreases, and the stability of the work platform is greatly reduced. Relying solely on the scissor lifting mechanism to maintain the stability of the work platform at high altitudes can easily cause the platform's center of gravity to become unstable, or even lead to overturning accidents, if personnel encounter external factors such as crosswinds while working on the platform. Therefore, a safety device for scissor lift aerial work platforms is proposed to solve the above problems. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes a safety device for scissor lift aerial work platforms, which improves the safety and stability of scissor lift aerial work platforms in elevated working conditions and provides safety support in situations with strong outdoor winds or unstable platform center of gravity.

[0005] The technical solution to achieve the purpose of this utility model is: a safety device for a scissor lift aerial work platform, including a side fixing plate disposed at the bottom of the safety platform, wherein a main bearing is rotatably connected to the inner wall of the side fixing plate, and further comprising;

[0006] Multiple drums are coaxially fixed to a main bearing, and connecting gears are coaxially fixed to the surface of the main bearing.

[0007] A drive motor is installed at the bottom of the safety platform. The output end of the drive motor is fixedly connected to a drive gear, which meshes with a connecting gear.

[0008] In some embodiments, an auxiliary fixing plate is fixedly connected to the bottom upper surface of the safety platform, and one side of both the connecting gear and the driving gear is rotatably connected to the auxiliary fixing plate.

[0009] In some embodiments, the safety platform has multiple fixed pulleys on its bottom side and multiple ear plates on its platform side, with the ear plates corresponding one-to-one with the fixed pulleys.

[0010] In some embodiments, the ear plate is provided with a steel wire rope, which passes through a fixed pulley and is wound on a drum, and a tapered steel wire sleeve is provided on the steel wire rope.

[0011] Compared with existing technologies, the significant advantages of this invention are:

[0012] This invention connects a motor to a power source and allows each wire rope to pass sequentially through an ear plate, a fixed pulley, and a drum. When the platform rises, the motor starts synchronously, driving the drive gear and connecting gear to rotate, thereby causing the main bearing to rotate. The rotation of the main bearing causes the drum to rotate, releasing or winding the wire ropes to ensure that the wire ropes always exert tension on the platform, keeping the platform stable. By applying a downward pulling force to the working platform through the wire ropes, when the working platform experiences vertical displacement in one direction, a force is provided to keep the platform level, thus achieving a stable anti-tipping effect.

[0013] Secondly, unlike adding anti-tipping outriggers, this safety device does not occupy space in the work area, thus avoiding other construction inconveniences. Furthermore, when working outdoors at heights, weather changes may lead to crosswinds, and this safety device can effectively resist the instability caused by crosswinds on the work platform, making it more practical.

[0014] This solves the problem of insufficient safety protection for existing scissor lift aerial work platforms when raised to a certain height. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic diagram of the main structure provided in one embodiment of the present invention;

[0017] Figure 2 This is a frontal planar structural schematic diagram provided in one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the main bearing structure provided in one embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Side fixing plate; 2. Main bearing; 3. Drum; 4. Connecting gear; 5. Drive motor; 6. Auxiliary fixing plate; 7. Fixed pulley; 8. Ear plate; 9. Wire rope; 10. Tapered wire sleeve; 11. Drive gear. Detailed Implementation

[0021] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0022] This utility model provides an improved safety device for a scissor lift aerial work platform. The technical solution of this utility model is as follows:

[0023] like Figure 1 As shown, a safety device for a scissor lift aerial work platform includes a side fixing plate 1 disposed at the bottom of the safety platform, a main bearing 2 rotatably connected to the inner wall of the side fixing plate 1, and further includes;

[0024] Multiple drums 3 are coaxially fixed on the main bearing 2. Connecting gears 4 are coaxially fixed on the surface of the main bearing 2. The main bearing 2 is the power transmission mechanism for fixing the wire rope 9 drums 3 and each gear. When the main bearing 2 rotates clockwise, the wire rope 9 tightens as the platform descends. The wire rope 9 is wound counterclockwise in the drums 3 to ensure that the wire rope 9 rises or falls simultaneously.

[0025] The drive motor 5 is located at the bottom of the safety platform. The output end of the drive motor 5 is fixedly connected to the drive gear 11, which meshes with the connecting gear 4. The drive motor 5 is a servo motor, which is set to forward and reverse rotation and to lock up in the non-operation state to prevent the wire rope 9 from loosening.

[0026] like Figure 2 As shown, in one embodiment, an auxiliary fixing plate 6 is fixedly connected to the bottom upper surface of the safety platform. One side of the connecting gear 4 and the driving gear 11 are rotatably connected to the auxiliary fixing plate 6 to prevent gear misalignment or displacement, which could lead to malfunction and ensure equipment safety.

[0027] like Figure 3 As shown, in one embodiment, a plurality of fixed pulleys 7 are provided on the bottom side of the safety platform, and a plurality of ear plates 8 are provided on the platform side of the safety platform. The positions of the ear plates 8 and the fixed pulleys 7 correspond one-to-one. The fixed pulleys 7 are used to change the direction of the wire rope 9.

[0028] In one embodiment, a wire rope 9 is provided on the ear plate 8. The wire rope 9 passes through the fixed pulley 7 and is wound on the drum 3. A tapered wire sleeve 10 is provided on the wire rope 9.

[0029] The specific working method is as follows: When the safety device of this scissor lift aerial work platform is used, the motor is connected to the power supply, and each wire rope 9 passes through the ear plate 8, the fixed pulley 7 and the drum 3 in sequence. When the platform rises, the drive motor 5 starts synchronously, driving the drive gear 11 and the connecting gear 4 to rotate, thereby causing the main bearing 2 to rotate. At the same time as the main bearing 2 rotates, the drum 3 rotates, releasing or winding the wire rope 9, ensuring that the wire rope 9 always has tension on the platform, keeping the platform stable. The wire rope 9 applies a downward pulling force to the work platform. When the work platform undergoes vertical displacement in one direction, it provides a force to keep the platform level, thereby achieving the anti-tipping effect of platform stability.

[0030] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A safety device of a scissors aerial work platform, comprising a side fixing plate (1) arranged at the bottom of a safety platform, characterized in that: The inner wall of the side fixing plate (1) is rotatably connected to the main bearing (2), and also includes; Multiple drums (3) are coaxially fixed on the main bearing (2), and a connecting gear (4) is coaxially fixed on the surface of the main bearing (2). The drive motor (5) is located at the bottom of the safety platform. The output end of the drive motor (5) is fixedly connected to the drive gear (11), which meshes with the connecting gear (4).

2. A scissors-type aerial work platform safety device according to claim 1, characterized in that: An auxiliary fixing plate (6) is fixedly connected to the bottom upper surface of the safety platform, and one side of the connecting gear (4) and the driving gear (11) are rotatably connected to the auxiliary fixing plate (6).

3. The scissors aerial work platform safety device according to claim 1, wherein: The safety platform has multiple fixed pulleys (7) on its bottom side and multiple ear plates (8) on its platform side. The positions of the ear plates (8) and the fixed pulleys (7) correspond one-to-one.

4. A scissors-type aerial work platform safety device according to claim 3, characterized in that: A wire rope (9) is provided on the ear plate (8). The wire rope (9) passes through a fixed pulley (7) and is wound on a drum (3). A tapered wire sleeve (10) is provided on the wire rope (9).

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