Small sanitation vehicle drive-by-wire chassis with four wheels steering and driving independently

Abstract

The utility model relates to the technical field of sanitation truck chassis, in particular to a small sanitation truck drive-by-wire chassis with four wheels independently steering and independently driven, which comprises a chassis frame and wheels arranged at four corners of the chassis frame, and hub motors are fixedly arranged at axes of the wheels. A steering mechanism used for driving the wheels to freely steer is arranged on one side of the hub motor and comprises a steering motor arranged on the top of one side of each wheel and fixed to the chassis frame and a right-angle planetary reducer arranged on an output shaft of the steering motor in a transmission mode, and a steering support is arranged on one side of the hub motor. According to the drive-by-wire chassis of the sanitation vehicle, the sanitation vehicle can flexibly run in a narrow environment, inconvenience in cleaning the narrow environment is reduced, the cleaning effect of the sanitation vehicle is improved, the practicability of the drive-by-wire chassis of the sanitation vehicle is improved, the flexibility of the sanitation vehicle is ensured, and the application range of the drive-by-wire chassis of the sanitation vehicle is expanded; the situation that cleaning work is extremely inconvenient due to the fact that an existing sanitation vehicle is inconvenient to drive in a narrow environment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chassis for sanitation vehicles, in particular to a wire-controlled chassis for a small sanitation vehicle with four wheels that are independently steered and driven. Background Art

[0002] Due to design limitations, traditional small sanitation vehicles currently have a large turning radius. This makes it difficult for sanitation vehicles to navigate narrow streets, green belts, or interior spaces of buildings such as basements and garages, where there are many obstacles such as trees, roadblocks, and traffic facilities. This large turning radius makes it difficult for sanitation vehicles to fully utilize their cleaning functions, making cleaning work in these areas extremely difficult. Furthermore, due to the limitations of rear-wheel drive and insufficient drive power, when a sanitation vehicle is loaded with garbage, the vehicle's mass increases significantly and its center of gravity shifts rearward. This change results in the vehicle being unable to navigate a slope even when empty, but unable to do so when fully loaded due to insufficient power, thus affecting the efficiency of the cleaning work. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a wire-controlled chassis for a small sanitation vehicle with four-wheel independent steering and independent drive, which solves the technical problem that the existing sanitation vehicles have difficulty driving in narrow environments, causing great inconvenience in cleaning work.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a wire-controlled chassis for a small sanitation vehicle with four-wheel independent steering and independent drive, comprising a chassis frame and wheels arranged at the four corners of the chassis frame, a hub motor fixedly arranged at the axis of the wheel, and a steering mechanism for driving the wheel to steer freely is arranged on one side of the hub motor, the steering mechanism comprising a steering motor arranged at the top of one side of the wheel and fixed to the chassis frame, and a right-angle planetary reducer arranged on the output shaft of the rotating motor, a steering bracket is arranged on one side of the hub motor, and a shock-absorbing component for connecting the hub motor and providing a buffering effect is arranged on the bottom side of the steering bracket.

[0005] As a further optimization scheme of the present invention, the shock absorbing assembly includes a shock absorber arranged on one side of the bottom of the steering bracket, and a connecting bracket fixed to the top of the shock absorber and fixed to the steering bracket by bolts, and shock absorbing connecting rods are respectively rotatably arranged at both ends of the connecting bracket.

[0006] As a further optimization solution of the present invention, a connecting transverse axis is fixedly provided on the output shaft of the hub motor, and a steering knuckle is rotatably provided on the connecting transverse axis through a bearing.

[0007] As a further optimization solution of the present invention, connecting blocks rotatably connected to the two shock-absorbing connecting rods are respectively fixed to both ends of one side of the steering knuckle.

[0008] As a further optimization solution of the present invention, the bottom of the shock absorber is provided with a connecting seat fixed to the steering knuckle via bolts.

[0009] As a further optimization solution of the present invention, the bottom end of the drive shaft of the right-angle planetary reducer passes through the chassis frame and is fixedly connected to the top of the steering bracket.

[0010] The utility model provides a wire-controlled chassis for a small sanitation vehicle with four independent wheels that can be steered and driven independently. Compared with the existing technology, it has the following advantages:

[0011] 1. The utility model provides a steering mechanism on one side of each wheel, so that each wheel can rotate freely by a certain angle, and can realize four driving modes of the sanitation vehicle, namely normal driving, oblique driving, sideways driving and turning on the spot, so that the sanitation vehicle can drive flexibly in a narrow environment, reducing the inconvenience of cleaning in a narrow environment, improving the cleaning effect of the sanitation vehicle, and improving the practicality of the sanitation vehicle's wire-controlled chassis, avoiding the situation where the existing sanitation vehicle has difficulty driving in a narrow environment and causing extreme inconvenience in cleaning work.

[0012] 2. The utility model provides a buffer for the entire chassis frame by setting a shock-absorbing component, and also connects the hub motor at the wheel axis to the steering bracket. When steering is required, the steering motor is started, and the steering motor drives the steering bracket to rotate through the drive shaft of the right-angle planetary reducer, so as to adjust the angle of the steering bracket, and then change the angle of the wheel, to achieve stable free steering, ensure the flexibility of the sanitation vehicle, expand the scope of application of the wire-controlled chassis of the sanitation vehicle, and facilitate use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic structural diagram of the steering mechanism of the present invention;

[0015] Figure 3 This is an exploded schematic diagram of the shock-absorbing assembly of the utility model;

[0016] Figure 4 This is a schematic diagram of the four wheels in the normal driving mode of the present invention;

[0017] Figure 5 This is a schematic diagram of the four wheels in the transverse shift mode of the present invention;

[0018] Figure 6 This is a schematic diagram of the four wheels in the oblique travel mode of the present invention;

[0019] Figure 7Schematic diagram of the four wheels in the on-the-spot steering mode of the present invention.

[0020] In the figure: 1. Chassis frame; 2. Wheel; 3. Hub motor;

[0021] 4. Steering mechanism; 41. Steering motor; 42. Right-angle planetary reducer; 43. Steering bracket;

[0022] 44. Shock absorber assembly; 441. Shock absorber; 442. Connecting bracket; 443. Shock absorber connecting rod; 444. Connecting cross shaft; 445. Steering knuckle; 446. Connecting block; 447. Connecting seat. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Existing sanitation vehicles are usually front-wheel steering and rear-wheel drive, but this chassis structure is not flexible in a small space, which makes its cleaning ability defective. In order to reduce the inconvenience of cleaning in a narrow environment, the cleaning effect of the sanitation vehicle is improved. Figure 1 - Figure 7 As shown, the utility model provides a wire-controlled chassis for a small sanitation vehicle with four-wheel independent steering and independent drive, which consists of a chassis frame 1, four wheels 2, a hub motor 3 and a steering mechanism 4. The four wheels 2 are respectively arranged at the four corners of the chassis frame 1, and the hub motor 3 is fixedly installed at the axis of the wheel 2.

[0025] In order to avoid the situation where the existing sanitation vehicles have difficulty driving in a narrow environment and cause great inconvenience in cleaning work, a steering mechanism 4 for driving the wheel 2 to turn freely is provided on one side of the hub motor 3. The specific implementation method is that the steering mechanism 4 includes a steering motor 41 arranged on the top of one side of the wheel 2 and fixed to the chassis frame 1, and a right-angle planetary reducer 42 that is arranged on the output shaft of the rotating motor. A steering bracket 43 is provided on one side of the hub motor 3, and the bottom end of the drive shaft of the right-angle planetary reducer 42 passes through the chassis frame 1 and is fixedly connected to the top of the steering bracket 43. When steering is required, by starting the steering motor 41, the steering motor 41 drives the steering bracket 43 to rotate through the drive shaft of the right-angle planetary reducer 42, thereby adjusting the angle of the steering bracket 43.

[0026] The four driving modes of sanitation vehicles include normal driving, oblique driving, sideways driving and turning on the spot. In normal driving mode, the vehicle is steered by the front wheels and the rear wheels remain in a straight state; in oblique driving mode, the four wheels are synchronously adjusted to the same angle according to the steering wheel instructions, so that the vehicle can move in the oblique direction; in sideways driving mode, the four wheels rotate 90 degrees at the same time to achieve sideways movement; in on-site turning mode, the four wheels adjust the angle according to the vehicle's wheelbase and track to ensure that the rotation geometric center coincides with the vehicle's center of mass, so that the vehicle can be turned without moving the vehicle, allowing sanitation vehicles to travel flexibly in narrow environments and reducing the inconvenience of cleaning in narrow environments.

[0027] In order to ensure the flexibility of the sanitation vehicle and expand the scope of application of the wire-controlled chassis of the sanitation vehicle, a shock-absorbing assembly 44 for connecting the hub motor 3 and providing a buffering effect is provided on the bottom side of the steering bracket 43. The specific implementation method is that the shock-absorbing assembly 44 includes a shock absorber 441 provided on the bottom side of the steering bracket 43, and a connecting bracket 442 fixed to the top of the shock absorber 441 and fixed to the steering bracket 43 by bolts. The two ends of the connecting bracket 442 are respectively rotatably provided with shock-absorbing connecting rods 443, and the axial holes provided on both sides of the connecting bracket 442 respectively match the axial holes at one end of the two shock-absorbing connecting rods 443. 442 and the shock-absorbing link 443 are rotatably connected by bolts. A connecting transverse axis 444 is fixedly provided on the output shaft of the hub motor 3. A steering knuckle 445 is rotatably provided on the connecting transverse axis 444 through a bearing. Connecting blocks 446 rotatably connected to the two shock-absorbing links 443 are respectively fixed at both ends of one side of the steering knuckle 445. A connecting seat 447 fixed to the steering knuckle 445 is provided at the bottom of the shock absorber 441 through bolts. The shock absorber 441 connects the steering knuckle 445 and the steering bracket 43 together. When the vehicle passes through a bumpy road section, the shock absorbers 441 on one side of the four wheels 2 provide a certain buffering effect for the chassis frame 1.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire-controlled chassis for a small sanitation vehicle with four independent wheels and independent steering and driving, comprising a chassis frame (1) and wheels (2) arranged at the four corners of the chassis frame (1), characterized in that: A hub motor (3) is fixedly provided at the axis of the wheel (2), and a steering mechanism (4) for driving the wheel (2) to freely steer is provided on one side of the hub motor (3); The steering mechanism (4) comprises a steering motor (41) arranged on the top of one side of the wheel (2) and fixed to the chassis frame (1), and a right-angle planetary reducer (42) arranged on the output shaft of the rotating motor. A steering bracket (43) is arranged on one side of the hub motor (3), and a shock absorbing component (44) for connecting to the hub motor (3) and providing a buffering effect is arranged on the bottom side of the steering bracket (43).

2. The wire-controlled chassis of a small sanitation vehicle with four-wheel independent steering and independent drive according to claim 1 is characterized by: The shock absorbing assembly (44) comprises a shock absorber (441) arranged on one side of the bottom of the steering bracket (43), and a connecting bracket (442) fixed to the top of the shock absorber (441) and fixed to the steering bracket (43) by bolts, and shock absorbing connecting rods (443) are rotatably arranged at both ends of the connecting bracket (442).

3. The wire-controlled chassis of a small sanitation vehicle with four-wheel independent steering and independent drive according to claim 2 is characterized by: A connecting transverse shaft (444) is fixedly provided on the output shaft of the hub motor (3), and a steering knuckle (445) is rotatably provided on the connecting transverse shaft (444) via a bearing.

4. The wire-controlled chassis of a small sanitation vehicle with four-wheel independent steering and independent drive according to claim 3 is characterized by: Connecting blocks (446) rotatably connected to the two damping connecting rods (443) are respectively fixed at both ends of one side of the steering knuckle (445).

5. The wire-controlled chassis of a small sanitation vehicle with four-wheel independent steering and independent drive according to claim 4 is characterized by: The bottom of the shock absorber (441) is provided with a connecting seat (447) fixed to the steering knuckle (445) via bolts.

6. The wire-controlled chassis of a small sanitation vehicle with four-wheel independent steering and independent drive according to claim 1 is characterized by: The bottom end of the drive shaft of the right-angle planetary reducer (42) passes through the chassis frame (1) and is fixedly connected to the top of the steering bracket (43).

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