Aerial work platform chassis walking system

Abstract

The utility model discloses an aerial work platform chassis walking system which comprises a chassis assembly, driving wheels and universal wheels, the driving wheels and the universal wheels are arranged below the chassis assembly in pairs, and the driving wheels are used for controlling steering of a vehicle in a differential mode. The universal wheels are used for realizing vehicle steering under the driving of the driving wheels; the driving wheel is provided with a manual brake releasing mechanism used for achieving brake releasing rotation of the driving wheel. According to the aerial work platform chassis walking system, the driving wheels control a vehicle to steer through differential speed, the universal wheels are driven by the driving wheels to steer along with the driving wheels, and the steering action of the vehicle is completed; the battery pack provides a power source for the driving wheels; the device is simple in structure, flexible, light and low in manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work platforms, and particularly discloses a chassis walking system of an aerial work platform. Background Art

[0002] A vehicle-mounted aerial work platform refers to a vehicle that is more than 3 meters high and is driven by a hydraulic or electric system to control multiple hydraulic cylinders, and can lift up and down for operation. A manned aerial work platform using hydraulic transmission is an advanced mechanical equipment of the contemporary era. Existing aerial work platforms usually adopt a walking structure form of front-wheel steering and rear-wheel drive, and the steering system generally adopts a structural mode of mutual cooperation between an oil cylinder and a steering link, with a complex structure and high cost.

[0003] Therefore, the above-mentioned defects existing in the existing aerial work platforms are technical problems that need to be solved urgently at present. Summary of the Utility Model

[0004] The utility model provides a chassis walking system of an aerial work platform, aiming to solve at least one of the above-mentioned defects existing in the existing aerial work platforms.

[0005] The utility model relates to a chassis walking system of an aerial work platform, which includes a chassis assembly, and driving wheels and universal wheels respectively arranged in pairs below the chassis assembly. The driving wheels are used to control the vehicle steering by differential; the universal wheels are used to realize vehicle steering under the drive of the driving wheels; a manual brake release mechanism is arranged on the driving wheels for realizing the rotation of the driving wheels after releasing the brake.

[0006] Further, the manual brake release mechanism includes an output shaft, a speed reducer, a motor, a brake and a release handle. The output shaft is connected to the speed reducer, one end of the motor is connected to the speed reducer, the other end of the motor is connected to the brake, and the release handle is connected to the brake for releasing the brake on the brake.

[0007] Further, one end of the output shaft is sleeved on the speed reducer.

[0008] Further, the other end of the output shaft is sleeved on the driving wheel.

[0009] Further, the motor is a double-shaft output motor.

[0010] Further, a battery pack is arranged on the chassis assembly, and the battery pack is electrically connected to the driving wheels for providing a power source for the driving wheels.

[0011] Further, the driving wheels are arranged in pairs below the front end of the chassis assembly.

[0012] Further, the universal wheels are arranged in pairs below the rear end of the chassis assembly.

[0013] The beneficial effects achieved by the present utility model are as follows:

[0014] The present utility model provides a chassis walking system for an aerial work platform, which adopts a chassis assembly, a driving wheel and a universal wheel respectively arranged in pairs below the chassis assembly. The driving wheel is used to control the vehicle steering by differential; the universal wheel is used to realize the vehicle steering driven by the driving wheel; a manual brake release mechanism is arranged on the driving wheel for realizing the release of the brake and rotation of the driving wheel. In the chassis walking system for an aerial work platform provided by the present utility model, the driving wheel controls the vehicle steering by differential, and the universal wheel follows the driving wheel to turn, completing the steering action of the vehicle; the battery pack provides a power source for the driving wheel; the structure is simple, flexible and light, and the manufacturing cost is relatively low. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the chassis walking system for an aerial work platform of the present utility model;

[0016] Figure 2 is Figure 1 a three-dimensional structural schematic diagram of the manual brake release mechanism shown in

[0017] Explanation of the reference numerals in the drawings:

[0018] 10. Chassis assembly; 20. Driving wheel; 30. Universal wheel; 40. Manual brake release mechanism; 41. Output shaft; 42. Reducer; 43. Motor; 44. Brake; 45. Release handle; 50. Battery pack. Detailed Embodiment

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the drawings in the specification and specific embodiments.

[0020] As Figure 1 and Figure 2 shown, a first embodiment of the present utility model proposes a chassis walking system for an aerial work platform, including a chassis assembly 10, a driving wheel 20 and a universal wheel 30 respectively arranged in pairs below the chassis assembly 10. The driving wheel 20 is used to control the vehicle steering by differential; the universal wheel 30 is used to realize the vehicle steering driven by the driving wheel 20; a manual brake release mechanism 40 for realizing the release of the brake and rotation of the driving wheel 20 is arranged on the driving wheel 20. Among them, the manual brake release mechanism 40 can adopt an existing motor brake release handle mechanism, which is within the protection scope of this patent.

[0021] Furthermore, please refer to Figure 1 and Figure 2, for the aerial work platform chassis walking system provided in this embodiment, the manual brake release mechanism 40 includes an output shaft 41, a speed reducer 42, an electric motor 43, a brake 44 and a release handle 45. The output shaft 41 is connected to the speed reducer 42. One end of the electric motor 43 is connected to the speed reducer 42, and the other end of the electric motor 43 is connected to the brake 44. The release handle 45 is connected to the brake 44 and is used to release the braking of the brake 44. Specifically, one end of the output shaft 41 is sleeved on the speed reducer 42, and the other end of the output shaft 41 is sleeved on the driving wheel 20. The electric motor 43 is a double-shaft output electric motor. A battery pack 50 is provided on the chassis assembly 10, and the battery pack 50 is electrically connected to the driving wheel 20 to provide a power source for the driving wheel 20. The driving wheels 20 are arranged in pairs below the front end of the chassis assembly 10, and the universal wheels 30 are arranged in pairs below the rear end of the chassis assembly 10. For the aerial work platform chassis walking system provided in this embodiment, the driving wheels 20 control the vehicle steering through differential, and the universal wheels 30 are driven by the driving wheels 20 to turn accordingly to complete the vehicle steering action; the battery pack 50 provides a power source for the driving wheels 20; the structure is simple, flexible and light, and the manufacturing cost is relatively low.

[0022] As Figure 1 and Figure 2 shown, for the aerial work platform chassis walking system provided in this embodiment, its working principle is as follows:

[0023] There are 2 universal wheels 30 arranged at the lower left of the chassis assembly 10. Since the universal wheels 30 can turn flexibly, when the universal wheels 30 are subjected to a lateral force, they will deflect according to the direction of the force to realize the turning of the universal wheels 30. Two driving wheels 20 are arranged at the lower right of the chassis assembly 10. The battery pack 50 provides a power source for the driving wheels 20, and the driving wheels 20 can drive the whole vehicle to travel. When the vehicle needs to turn, the driving wheels 20 will control the vehicle steering by differential. When the vehicle needs to turn left, the rotational speed of the left driving wheel 20 will be less than that of the right driving wheel 20. Since the rotational speed of the right driving wheel 20 is greater, the universal wheels 30 will be subjected to a lateral force to the left, causing the universal wheels 30 to also turn left accordingly. When the vehicle needs to turn right, the rotational speed of the right driving wheel 20 will be less than that of the left driving wheel 20. Since the rotational speed of the left driving wheel 20 is greater, the universal wheels 30 will be subjected to a lateral force to the right, causing the universal wheels 30 to also turn left accordingly. The greater the turning angle, the greater the rotational speed difference between the two driving wheels 20. A manual brake release mechanism 40 is provided on the driving wheels 20. When the driving wheels 20 fail to rotate, the brakes of the driving wheels 20 can be released through the manual brake release mechanism 40 to make the driving wheels 20 brake-free and rotate, which is convenient for transferring the vehicle when the driving wheels 20 cannot travel due to faults.

[0024] When the motor 43 is powered on, the brake 44 is also powered on simultaneously and generates suction force. At this time, the motor is not braked, and the output shaft 41 rotates normally under the drive of the speed reducer 42 to output torque, that is, the vehicle can travel normally when powered on.

[0025] When the motor 43 is powered off, the brake 44 brakes the motor 43, making the output shaft 41 unable to rotate and putting the whole vehicle in a braking state. At this time, manually pull the release handle 45, and the brake 44 will release the braking of the motor 43, so that the speed reducer 42 and the output shaft 41 can rotate freely, and then the wheels can be rotated by external force.

[0026] Compared with the prior art, the chassis walking system of the aerial work platform provided in this embodiment adopts a chassis assembly, as well as a driving wheel and a universal wheel respectively arranged in pairs under the chassis assembly. The driving wheel is used to control the vehicle steering by differential; the universal wheel is used to realize vehicle steering under the drive of the driving wheel; a manual brake release mechanism for realizing the braking release and rotation of the driving wheel is provided on the driving wheel. For the chassis walking system of the aerial work platform provided in this embodiment, the driving wheel controls the vehicle steering by differential, and the universal wheel steers accordingly under the drive of the driving wheel to complete the vehicle steering action; the battery pack provides a power source for the driving wheel; the structure is simple, flexible and light, and the manufacturing cost is relatively low.

[0027] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention. Obviously, those skilled in the art can make various changes and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A chassis walking system for an aerial work platform, characterized in that: The invention comprises a chassis assembly (10), and a driving wheel (20) and a universal wheel (30) respectively arranged in pairs below the chassis assembly (10); the driving wheel (20) is used to control the steering of the vehicle by means of differential speed; the universal wheel (30) is used to realize the steering of the vehicle under the drive of the driving wheel (20); and a manual brake release mechanism (40) is provided on the driving wheel (20) for realizing the brake release rotation of the driving wheel (20).

2. The aerial work platform chassis walking system according to claim 1, characterized in that: The manual brake release mechanism (40) comprises an output shaft (41), a reducer (42), a motor (43), a brake (44) and a release handle (45), wherein the output shaft (41) is connected to the reducer (42), one end of the motor (43) is connected to the reducer (42), the other end of the motor (43) is connected to the brake (44), and the release handle (45) is connected to the brake (44) for releasing the brake (44).

3. The aerial work platform chassis walking system according to claim 2, characterized in that: One end of the output shaft (41) is sleeved on the reducer (42).

4. The aerial work platform chassis walking system according to claim 2, characterized in that: The other end of the output shaft (41) is sleeved on the driving wheel (20).

5. The aerial work platform chassis walking system according to claim 2, characterized in that: The motor (43) is a dual-shaft output motor.

6. The aerial work platform chassis walking system according to claim 2, characterized in that: A battery pack (50) is provided on the chassis assembly (10), and the battery pack (50) is electrically connected to the driving wheel (20) and is used to provide a power source for the driving wheel (20).

7. The aerial work platform chassis walking system according to claim 2, characterized in that: The driving wheels (20) are arranged in pairs below the front end of the chassis assembly (10).

8. The aerial work platform chassis walking system according to claim 2, characterized in that: The universal wheels (30) are arranged in pairs below the rear end of the chassis assembly (10).

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