Vehicle chassis with four wheels running independently and aerial work platform

Abstract

The utility model discloses a vehicle chassis with four wheels running independently and an aerial work platform, the vehicle chassis comprises a vehicle frame, steering wheel assemblies which are mutually independent are respectively installed at four corners of the vehicle frame, and the steering wheel assemblies are rotatably connected with the vehicle frame through slewing bearings; the steering wheel assembly comprises a mounting frame, wheels, a walking motor and a steering motor; the steering motor is mounted on the mounting frame to drive the steering wheel assembly to rotate relative to the frame by taking a central shaft of the slewing bearing as a center; walking motors and steering motors of the four steering wheel assemblies at the front end and the rear end of the frame are in control connection with a front-end motor controller and a rear-end motor controller on the frame respectively. The chassis technology is applied to a sleeve type or scissor type working platform, and the flexibility and mobility of the sleeve type or scissor type working platform can be improved. The utility model has the beneficial effects that the steering and moving problems of the aerial work platform in a narrow area are solved, the structure is simple, safe and reliable, the maintenance is convenient, the manufacturing cost is low, and the application scene is wide.

Description

Technical Field

[0001] The utility model relates to a vehicle chassis and an aerial work platform using the chassis, in particular to a vehicle chassis and an aerial work platform with four-wheel independent operation, belonging to the technical field of aerial work equipment. Background Art

[0002] An aerial work platform is a product for mobile aerial work, equipment installation, maintenance, etc. in various industries. The main related products of aerial work platforms are: scissor aerial work platforms, trailer-mounted aerial work platforms, articulated boom aerial work platforms, straight boom aerial work platforms, aluminum alloy aerial work platforms, telescopic cylinder aerial work platforms, and spider aerial work platforms, a total of seven categories.

[0003] Among them, the self-propelled aerial work platform has its own walking and steering drive functions, does not require manual traction, and does not require an external power supply, making it flexible and convenient to move, and making aerial work more convenient and fast. It is an ideal aerial work equipment for the efficient and safe production of modern enterprises.

[0004] However, most of the existing self-propelled aerial work platforms on the market at present cannot self-steer in place and move in any direction, and cannot fully meet the requirements of moving and using in narrow areas, restricting the applicable working conditions of self-propelled aerial work platforms.

[0005] Chinese Patent CN 216662405 U discloses a sleeve-type low-altitude lifting platform. Rollers are rotatably installed at the four corners of the chassis. The two rollers on the side away from the sleeve-type column mechanism are universal wheels, and brakes are installed on the universal wheels. With the four rollers provided, the device can be conveniently moved, and two of the rollers are universal wheels, making it more convenient for the device to turn. After moving to a suitable position, the brakes are opened. In this solution, the two rollers on the side away from the sleeve-type column mechanism are universal wheels as steering wheels, and the steering principle similar to that of a forklift is adopted; it still cannot meet the steering and moving requirements in narrow areas. Summary of the Invention

[0006] Object of the Invention: The object of the utility model is to solve the problems existing in the prior art, and provide a vehicle chassis and an aerial work platform with four-wheel independent operation. The utility model solves the problems of steering and moving of the aerial work platform in narrow areas by respectively installing four independently controllable steering wheels at the four corners of the frame, with simple structure, safe and reliable, convenient for maintenance, low manufacturing cost, and wide application scenarios.

[0007] Technical Solution: A vehicle chassis with four-wheel independent operation includes a frame, and independently controllable steering wheel assemblies are respectively installed at the four corners of the frame. The steering wheel assemblies are rotatably connected to the frame through slewing bearings;

[0008] The steering wheel assembly includes a mounting frame, a wheel, a traveling motor, and a steering motor. The wheel is rotatably mounted on the mounting frame. The traveling motor is mounted on the mounting frame and its output shaft drives the wheel to rotate. The steering motor is mounted on the mounting frame and drives the steering wheel assembly to rotate relative to the vehicle frame with the central axis of the slewing bearing as the center;

[0009] The traveling motors and steering motors of the two steering wheel assemblies at the front end of the vehicle frame are respectively connected to the front-end motor controller on the vehicle frame for control connection;

[0010] The traveling motors and steering motors of the two steering wheel assemblies at the rear end of the vehicle frame are respectively connected to the rear-end motor controller on the vehicle frame for control connection.

[0011] The utility model solves the problems of steering and moving of the aerial work platform in a narrow area through four steering wheels independently controllable and mounted on the vehicle frame, with a simple structure, safety and reliability, convenient maintenance, low manufacturing cost, and wide application scenarios.

[0012] Preferably, in order to realize the independent rotation of the steering wheel assembly, a fixed external gear ring is provided on the outer circumference of the outer ring of the slewing bearing. The output shaft of the steering motor is fixedly connected with a steering gear. The fixed external gear ring meshes with the steering gear. The steering motor drives the steering gear to rotate around the outer circumference of the fixed external gear ring, driving the driving steering wheel assembly to rotate relative to the vehicle frame. The steering motor drives the steering gear to rotate and then drives the entire steering wheel assembly to rotate relative to the vehicle frame, realizing the steering and lateral movement of the whole vehicle.

[0013] Preferably, in order to facilitate the installation of the traveling motor and the steering motor and not affect the rotation of the steering wheel assembly, a wire passing hole is provided at the center of the slewing bearing. The wires of the traveling motor and the steering motor pass through the wire passing hole and are respectively connected to the front-end motor controller and the rear-end motor controller on the vehicle frame.

[0014] Preferably, in order to realize the precise control of the steering of the whole vehicle, the steering motor is a servo synchronous motor. The steering motors of the two steering wheel assemblies at the front end are synchronously and independently controlled by the front-end motor controller, and the steering motors of the two steering wheel assemblies at the rear end are synchronously and independently controlled by the rear-end motor controller.

[0015] An aerial work platform is provided with a working platform assembly, a telescopic sleeve assembly, and a slewing assembly on the vehicle frame of a vehicle chassis with four-wheel independent operation; the working platform assembly is mounted on the vehicle frame through the telescopic sleeve assembly, and the telescopic sleeve assembly is rotatably connected to the vehicle frame through the slewing assembly.

[0016] Without changing the overall structure, the utility model adds a steering wheel assembly to realize the functions of steering and traveling in any direction; applying the above-mentioned four-wheel independent operation vehicle chassis technology to the telescopic aerial work platform improves the flexibility and maneuverability of the telescopic aerial work platform.

[0017] Preferred option: To improve the overall stability of the telescopic aerial work platform, the work platform assembly includes a platform body and a lifting device. The platform body is installed at the front end of the telescopic sleeve assembly through the lifting device, and a counterweight is provided at the rear end of the telescopic sleeve assembly.

[0018] Preferred option: To further improve the overall stability of the telescopic aerial work platform, a battery assembly is provided at the rear end of the telescopic sleeve assembly.

[0019] An aerial work platform, on the frame of the vehicle chassis with four-wheel independent operation, a scissor-type work platform is provided. Applying the above-mentioned four-wheel independent operation vehicle chassis technology to the scissor-type work platform can improve the flexibility and mobility of the scissor-type aerial work platform without changing the overall structure.

[0020] Preferred option: To achieve the coordinated control of the vehicle steering and lateral movement, it includes a vehicle controller, and the vehicle controller is respectively connected to the front-end motor controller and the rear-end motor controller for control.

[0021] Preferred option: To improve the operation experience and usage range of the operator, the vehicle controller includes a handheld wireless remote control and a wireless receiver. The vehicle controller is connected to the wireless receiver through CAN communication, and the vehicle is controlled through the handheld wireless remote control. Information interaction is carried out with the wireless receiver through CAN communication, and interaction is carried out with the transmitter of the handheld wireless remote control using 433M radio frequency signals to meet the function of wireless remote control; realizing the omnidirectional movement and wireless remote control operation of the whole machine.

[0022] Beneficial effects: The utility model solves the problems of steering and movement of the aerial work platform in a narrow area through four independently controllable steering wheels installed on the frame. The structure is simple, safe and reliable, easy to maintain, low in manufacturing cost, and has a wide range of application scenarios; and it can be combined with other types of aerial work platforms to improve its flexibility and mobility without changing the overall structure, forming a modular structure and enhancing the application scenarios. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2Schematic diagram of the whole machine structure after the rotation of the steering wheel assembly of the present utility model;

[0026] Figure 3 Exploded view of the chassis of the present utility model. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] In the present utility model, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0030] As Figure 1 and 3 shown, a vehicle chassis with four-wheel independent operation includes a vehicle frame 1, and independent steering wheel assemblies 2 are respectively installed at the four corners of the vehicle frame 1. The steering wheel assemblies 2 and the vehicle frame 1 are rotatably connected through a slewing bearing 3;

[0031] The steering wheel assembly 2 includes a mounting bracket 21, a wheel 22, a traveling motor 23 and a steering motor 24. The wheel 22 is rotatably installed on the mounting bracket 21. The traveling motor 23 is installed on the mounting bracket 21 and its output shaft drives the wheel 22 to rotate. The steering motor 24 is installed on the mounting bracket 21 and drives the steering wheel assembly 2 to rotate relative to the vehicle frame 1 with the central axis of the slewing bearing 3 as the center;

[0032] The traveling motors 23 and the steering motors 24 of the two steering wheel assemblies 2 at the front end of the vehicle frame 1 are respectively connected to the front-end motor controller 25 on the vehicle frame 1 for control.

[0033] The traveling motors 23 and the steering motors 24 of the two steering wheel assemblies 2 at the rear end of the vehicle frame 1 are respectively connected to the rear-end motor controller 26 on the vehicle frame 1 for control.

[0034] The utility model solves the problems of steering and moving of the aerial work platform in a narrow area by four steering wheels that can be independently controlled and installed on the vehicle frame, with simple structure, safety and reliability, convenient maintenance, low manufacturing cost and wide application scenarios.

[0035] As Figure 1 and 2 shown, in order to realize the independent rotation of the steering wheel assembly 2, a fixed external gear ring 31 is provided on the outer circumference of the outer ring of the slewing bearing 3, the output shaft of the steering motor 24 is fixedly connected with a steering gear 32, the fixed external gear ring 31 is meshed with the steering gear 32, and the steering motor 24 drives the steering gear 32 to rotate around the outer circumference of the outer ring of the fixed external gear ring 31, driving the driving steering wheel assembly 2 to rotate relative to the vehicle frame 1. The steering motor 24 drives the steering gear 32 to rotate, and then drives the entire steering wheel assembly 2 to rotate relative to the vehicle frame 1, realizing the steering and lateral movement of the whole vehicle.

[0036] As Figure 3 shown, in order to facilitate the installation of the traveling motor 23 and the steering motor 24 without affecting the rotation of the steering wheel assembly 2, a wire passing hole 33 is provided at the center of the slewing bearing 3, and the circuits of the traveling motor 23 and the steering motor 24 pass through the wire passing hole 33 and are respectively connected to the front-end motor controller 25 and the rear-end motor controller 26 on the vehicle frame 1.

[0037] As Figure 1 shown, in order to realize the precise control of the steering of the whole vehicle, the steering motor 24 is a servo synchronous motor, and the steering motors 24 of the two front steering wheel assemblies 2 are synchronously and independently controlled by the front-end motor controller 25, and the steering motors 24 of the two rear steering wheel assemblies 2 are synchronously and independently controlled by the rear-end motor controller 26.

[0038] As Figure 1 and 2 shown, an aerial work platform, a working platform assembly 4, a telescopic sleeve assembly 5 and a slewing assembly 6 are provided on the vehicle frame 1 of the vehicle chassis with four-wheel independent operation; the working platform assembly 4 is installed on the vehicle frame 1 through the telescopic sleeve assembly 5, and the telescopic sleeve assembly 5 and the vehicle frame 1 are rotatably connected through the slewing assembly 6.

[0039] Without changing the overall structure, the present utility model adds a steering wheel assembly 2 to achieve the function of steering and traveling in any direction; applying the above-mentioned vehicle chassis technology with four-wheel independent operation to the telescopic aerial work platform improves the flexibility and mobility of the telescopic aerial work platform.

[0040] To improve the overall stability of the telescopic aerial work platform, the working platform assembly 4 includes a platform body 41 and a lifting device 42. The platform body 41 is installed at the front end of the telescopic sleeve assembly 5 through the lifting device 42, and a counterweight 7 is provided at the rear end of the telescopic sleeve assembly 5.

[0041] To further improve the overall stability of the telescopic aerial work platform, a battery assembly 8 is provided at the rear end of the telescopic sleeve assembly 5.

[0042] An aerial work platform, on the frame 1 of the vehicle chassis with four-wheel independent operation, there is a scissor-type work platform. Applying the above-mentioned vehicle chassis technology with four-wheel independent operation to the scissor-type work platform can improve the flexibility and mobility of the scissor-type aerial work platform without changing the overall structure. (No drawings are provided)

[0043] As Figure 1 shown, to achieve the coordinated control of the vehicle's steering and lateral movement, it includes a vehicle controller 9, and the vehicle controller 9 is respectively connected to the front-end motor controller 25 and the rear-end motor controller 26 for control.

[0044] To improve the operator's operation experience and usage range, the vehicle controller 9 includes a handheld wireless remote controller 91 and a wireless receiver 92. The vehicle controller 9 is connected to the wireless receiver 92 through CAN communication, and the vehicle is controlled through the handheld wireless remote controller 91. Information interaction is carried out with the wireless receiver 92 through CAN communication, and interaction is carried out with the transmitter of the handheld wireless remote controller 91 using 433M radio frequency signals to meet the function of wireless remote control; realizing the omnidirectional movement and wireless remote control operation of the whole machine.

[0045] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same and similar parts between each embodiment, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and reference can be made to the description of the method part for the relevant parts.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle chassis with four-wheel independent operation, including a vehicle frame (1), characterized in that: At the four corners of the frame (1), there are independently installed steering wheel assemblies (2), and the steering wheel assemblies (2) are rotatably connected to the frame (1) through slewing bearings (3); The steering wheel assembly (2) includes a mounting bracket (21), a wheel (22), a traveling motor (23) and a steering motor (24). The wheel (22) is rotatably mounted on the mounting bracket (21). The traveling motor (23) is mounted on the mounting bracket (21) and its output shaft drives the wheel (22) to rotate. The steering motor (24) is mounted on the mounting bracket (21) and drives the steering wheel assembly (2) to rotate relative to the frame (1) with the central axis of the slewing bearing (3) as the center; The traveling motors (23) and steering motors (24) of the two steering wheel assemblies (2) at the front end of the frame (1) are respectively connected to the front-end motor controller (25) on the frame (1) for control; The traveling motors (23) and steering motors (24) of the two steering wheel assemblies (2) at the rear end of the frame (1) are respectively connected to the rear-end motor controller (26) on the frame (1) for control.

2. The vehicle chassis with four-wheel independent operation according to claim 1, wherein: On the outer circumference of the outer ring of the slewing bearing (3), there is a fixed external gear ring (31). The output shaft of the steering motor (24) is fixedly connected with a steering gear (32). The fixed external gear ring (31) meshes with the steering gear (32). The steering motor (24) drives the steering gear (32) to rotate around the outer circumference of the fixed external gear ring (31), driving the steering wheel assembly (2) to rotate relative to the frame (1).

3. The vehicle chassis with four-wheel independent operation according to claim 1 or 2, characterized in that: There is a wire passing hole (33) at the center of the slewing bearing (3). The wires of the traveling motor (23) and the steering motor (24) pass through the wire passing hole (33) and are respectively connected to the front-end motor controller (25) and the rear-end motor controller (26) on the frame (1).

4. The vehicle chassis with four-wheel independent operation according to claim 1, characterized in that: The steering motor (24) is a servo synchronous motor. The steering motors (24) of the two front-end steering wheel assemblies (2) are synchronously and independently controlled by the front-end motor controller (25), and the steering motors (24) of the two rear-end steering wheel assemblies (2) are synchronously and independently controlled by the rear-end motor controller (26).

5. An aerial work platform, characterized in that: On the frame (1) of the vehicle chassis with four-wheel independent operation described in claim 3, there are a working platform assembly (4), a telescopic sleeve assembly (5) and a slewing assembly (6); the working platform assembly (4) is installed on the frame (1) through the telescopic sleeve assembly (5), and the telescopic sleeve assembly (5) is rotatably connected to the frame (1) through the slewing assembly (6).

6. The aerial work platform according to claim 5, characterized in that: The working platform assembly (4) includes a platform body (41) and a lifting device (42). The platform body (41) is installed at the front end of the telescopic sleeve assembly (5) through the lifting device (42), and a counterweight (7) is provided at the rear end of the telescopic sleeve assembly (5).

7. The aerial work platform according to claim 6, characterized in that: A battery assembly (8) is provided at the rear end of the telescopic sleeve assembly (5).

8. An aerial work platform, characterized in that: On the frame (1) of the vehicle chassis with four-wheel independent operation described in claim 3, there is a scissor-type working platform.

9. The aerial work platform according to claim 5 or 8, characterized in that: It includes a vehicle controller (9), and the vehicle controller (9) is respectively connected to the front-end motor controller (25) and the rear-end motor controller (26) for control.

10. The aerial work platform according to claim 9, characterized in that: The vehicle controller (9) includes a handheld wireless remote controller (91) and a wireless receiver (92). The vehicle controller (9) is connected to the wireless receiver (92) through CAN communication, and the vehicle is controlled through the handheld wireless remote controller (91).

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