Rear wheel steering structure of small motor sweeper

Abstract

The utility model relates to the technical field of motor sweepers, in particular to a small motor sweeper rear wheel steering structure which comprises a vehicle body, a sweeping mechanism arranged on the right side of the vehicle body, front wheels arranged on the two sides of the front end of the vehicle body in a rotating structure mode, a support arranged below the rear portion of the vehicle body in a rotating structure mode, and rear wheels arranged on the support in a rotating structure mode. The rear wheels and the front wheels form a tricycle structure; the support is provided with a large gear in a fixed structure mode, the large gear is provided with a small gear in an engaged mode, the small gear is fixedly provided with a driven chain wheel in a concentric structure mode, the driven chain wheel is connected with a driving chain wheel through a chain, the driving chain wheel is fixedly provided with a steering shaft A in a concentric structure mode, and the steering shaft A is connected with a steering shaft B through a universal joint. The steering wheel is arranged at the upper end of the steering shaft B. The vehicle body is arranged in the mode that the rear wheels steer, the turning radius of the vehicle is obviously reduced, and the vehicle can conveniently run in compact spaces such as supermarkets and supermarkets.

Description

Technical field:

[0001] The present application relates to the technical field of road sweepers, and in particular to a rear wheel steering structure of a small road sweeper. Background technology:

[0002] The sweeper is an integrated garbage cleaning vehicle that combines sweeping and vacuuming. It has the advantages of high work efficiency, low cleaning cost, good cleaning effect, high safety performance and high economic return rate. It has been widely used in cleaning roads in large, medium and small cities and large supermarkets.

[0003] The utility model patent with application number CN201320166757.9 - a reverse-riding three-wheel hybrid road sweeper, uses manpower, mechanical power and electricity as driving power; it can effectively solve the problems of cleaning blind spots and turning radius, as well as extend the battery working time and save manpower. It is a park road and community site cleaning machine with low production cost.

[0004] However, when turning, the front frame of the patent will shift to one side, which will cause the operator to lose stability and the turning radius is large, which cannot meet the actual work requirements. Utility model content:

[0005] In order to solve the above technical problems, the utility model provides a rear wheel steering structure for a small-sized sweeper, and solves the technical problem that the sweeper has a too large turning radius. In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] The rear wheel steering structure of a small sweeper includes:

[0007] A vehicle body, with front wheels being arranged on both sides of the front end of the vehicle body in a rotating structure;

[0008] A bracket is provided with a rear wheel, the rear wheel is connected to the bracket in a rotating structure, the bracket is arranged at the lower part of the rear part of the vehicle body in a rotating structure, and the rear wheel and the front wheel form a tricycle structure;

[0009] A large gear, wherein the large gear is connected to the bracket in a fixed structure;

[0010] A small gear, the small gear is connected to the large gear by meshing, and the small gear is connected to the vehicle body by a rotating structure;

[0011] A passive sprocket, wherein the passive sprocket is fixedly connected to the pinion in a concentric structure;

[0012] A driving sprocket and a chain, wherein the driving sprocket is connected to the driven sprocket through the chain, and the driving sprocket is connected to the vehicle body in a rotating structure;

[0013] Steering shaft A, the steering shaft A is fixedly connected with the driving sprocket in a concentric structure;

[0014] Steering shaft B, universal joint, the steering shaft B is connected to the vehicle body in a rotating structure, and the steering shaft B is connected to the steering shaft A through a universal joint;

[0015] Steering wheel, the steering wheel is connected to the steering shaft B.

[0016] Furthermore, the bracket is arranged in an inverted U-shaped structure, and a fixed shaft is arranged on the upper end surface of the bracket in a fixed structure manner, the fixed shaft is connected to the vehicle body in a rotating structure manner, and the fixed shaft is connected to the large gear through a key.

[0017] Furthermore, a rotating shaft is provided inside the pinion and the driven sprocket, and the rotating shaft is connected to the vehicle body in a rotating structure; and the rotating shaft, the pinion and the driven sprocket are all connected via a key.

[0018] Furthermore, the steering shaft B is arranged in a vertical structure, and the steering shaft B is connected to a tilt transmission shaft through a universal joint, the tilt transmission shaft is connected to the vehicle body in a rotating structure, and the tilt transmission shaft is connected to the steering wheel in a fixed structure.

[0019] Furthermore, steering sprockets connected to chains are arranged on both sides of the vehicle body between the passive sprocket and the driving sprocket, and the four steering sprockets are arranged in a trapezoidal structure.

[0020] The beneficial effects of the utility model are: the vehicle body is set to have rear wheel steering, which significantly reduces the turning radius of the vehicle and facilitates driving in compact spaces such as supermarkets;

[0021] The active sprocket is used to drive the passive sprocket through a chain, and then the large gear is driven by the small gear to drive the rear wheel steering. The structure is simple, easy to implement, and low in cost.

[0022] By setting a steering sprocket, the chain encloses the outer edge of the car body, leaving the internal space free for installing batteries and other components, reducing unnecessary space waste and making more effective use of space. Description of the drawings:

[0023] Figure 1 It is a main structural schematic diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the structure of the utility model in a top view without the steering wheel.

[0025] In the figure:

[0026] 1. Vehicle body, 2. Front wheel, 3. Rear wheel, 4. Bracket, 5. Large gear, 6. Small gear, 7. Passive sprocket, 8. Driving sprocket, 9. Chain, 10. Steering shaft A, 11. Steering shaft B, 12. Universal joint, 13. Fixed shaft, 14. Rotating shaft, 15. Tilt drive shaft, 16. Steering sprocket. Specific implementation method:

[0027] In order to make the purpose, technical scheme and advantages of the implementation of the utility model clearer, the utility model will now be further described in detail with reference to the accompanying drawings and the following examples so that the public can better understand the implementation method of the utility model. The specific implementation scheme of the utility model is as follows:

[0028] The rear wheel steering structure of a small-sized road sweeper comprises a vehicle body 1, a sweeping mechanism is arranged on the right side of the vehicle body 1, front wheels 2 are arranged on both sides of the front end of the vehicle body 1 in a rotating structure, a bracket 4 is arranged at the lower part of the rear of the vehicle body 1 in a rotating structure, a rear wheel 3 is arranged at the bracket 4 in a rotating structure, and the rear wheel 3 and the front wheel 2 form a tricycle structure; the bracket 4 is arranged with a large gear 5 in a fixed structure, the large gear 5 is arranged with a small gear 6 in a meshing manner, the small gear 6 is connected to the vehicle body 1 in a rotating structure, and the small gear 6 is fixedly arranged with a passive sprocket 7 in a concentric structure. The passive sprocket 7 is connected to the driving sprocket 8 through the chain 9, and the driving sprocket 8 is connected to the vehicle body 1 in a rotating structure. The driving sprocket 8 is fixedly provided with a steering shaft A10 in a concentric structure. The steering shaft A10 is connected to the steering shaft B11 through a universal joint 12. The steering shaft B11 is connected to the vehicle body 1 in a rotating structure. The steering shaft B11 is connected to the steering shaft A10 through the universal joint 12. A steering wheel is provided on the upper end of the steering shaft B11, and the vehicle body is set to rear wheel steering, which significantly reduces the turning radius of the vehicle and facilitates driving in compact spaces such as supermarkets.

[0029] Specifically, the bracket 4 is arranged in an inverted U-shaped structure, and a fixed shaft 13 is arranged on the upper end surface of the bracket 4 in a fixed structure manner. The fixed shaft 13 is connected to the vehicle body 1 in a rotating structure manner, and the fixed shaft 13 is connected to the large gear 5 through a key.

[0030] It should be noted that a rotating shaft 14 is sleeved inside the pinion 6 and the driven sprocket 7 , and the rotating shaft 14 is connected to the vehicle body 1 in a rotating structure; and the rotating shaft 14 and the pinion 6 and the driven sprocket 7 are all connected via a key.

[0031] It should be explained that the steering shaft B11 is arranged in a vertical structure, and the steering shaft B11 is connected to the tilt transmission shaft 15 through the universal joint 12. The tilt transmission shaft 15 is connected to the vehicle body 1 in a rotating structure, and the tilt transmission shaft 15 is connected to the steering wheel in a fixed structure, which provides a more spacious space for the driving seat and improves the comfort of the driver.

[0032] Furthermore, steering sprockets 16 connected to the chain 9 are arranged on both sides of the vehicle body 1 between the passive sprocket 7 and the active sprocket 8. The four steering sprockets 16 are arranged in a trapezoidal structure, which surrounds the outer edge of the vehicle body with the chain, leaving the internal space free for installing batteries and other components, thereby reducing unnecessary space waste and making more efficient use of the space.

[0033] The working principle and working process of the utility model are as follows:

[0034] When the sweeper needs to turn, the steering wheel is turned, and the steering wheel drives the tilting transmission shaft 15, the steering shaft B11 and the steering shaft A10 to rotate, and the steering shaft A10 drives the driving sprocket 8 to rotate, and the driving sprocket 8 drives the steering sprocket 16 and the driven sprocket 7 to rotate through the chain 9, and the driven sprocket 7 drives the small gear to rotate through the rotating shaft 14, and then drives the fixed shaft 13 to rotate through the large gear 5, and the fixed shaft 13 drives the rear wheel 3 to rotate through the bracket 4 to complete the turning work.

[0035] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "left", "right", "front", "back", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Although the present invention has been described according to a limited number of embodiments, those skilled in the art, with the benefit of the above description, should understand that other embodiments can be conceived within the scope of the present invention described thereby.

Claims

1. The rear wheel steering structure of a small sweeper is characterized by: include: A vehicle body (1), with front wheels (2) being arranged on both sides of the front end of the vehicle body (1) in a rotating structure; A bracket (4) is provided with a rear wheel (3), the rear wheel (3) is connected to the bracket (4) in a rotating structure, the bracket (4) is arranged below the rear part of the vehicle body (1) in a rotating structure, and the rear wheel (3) and the front wheel (2) form a tricycle structure; A large gear (5), the large gear (5) is connected to the bracket (4) in a fixed structure manner; A small gear (6), the small gear (6) is connected to the large gear (5) by a meshing manner, and the small gear (6) is connected to the vehicle body (1) by a rotating structure manner; A passive sprocket (7), the passive sprocket (7) and the pinion (6) are fixedly connected in a concentric structure; A driving sprocket (8) and a chain (9), wherein the driving sprocket (8) is connected to the driven sprocket (7) via the chain (9), and the driving sprocket (8) is connected to the vehicle body (1) in a rotating structure; A steering shaft A (10), the steering shaft A (10) is fixedly connected to the driving sprocket (8) in a concentric structure; A steering shaft B (11) and a universal joint (12), wherein the steering shaft B (11) is connected to the vehicle body (1) in a rotating structure, and the steering shaft B (11) is connected to the steering shaft A (10) via the universal joint (12); A steering wheel is connected to the steering shaft B (11).

2. The rear wheel steering structure of a small-sized sweeper according to claim 1 is characterized in that: The bracket (4) is arranged in an inverted U-shaped structure. The upper end surface of the bracket (4) is provided with a fixed shaft (13) in a fixed structure manner. The fixed shaft (13) is connected to the vehicle body (1) in a rotating structure manner, and the fixed shaft (13) is connected to the large gear (5) via a key.

3. The rear wheel steering structure of a small-sized sweeper according to claim 1 is characterized in that: A rotating shaft (14) is sleeved inside the pinion (6) and the driven sprocket (7), and the rotating shaft (14) is connected to the vehicle body (1) in a rotating structure; and the rotating shaft (14) and the pinion (6) and the driven sprocket (7) are all connected via a key.

4. The rear wheel steering structure of a small-sized sweeper according to claim 1 is characterized in that: The steering shaft B (11) is arranged in a vertical structure, and the steering shaft B (11) is connected to a tilting transmission shaft (15) through a universal joint (12), the tilting transmission shaft (15) is connected to the vehicle body (1) in a rotating structure, and the tilting transmission shaft (15) is connected to the steering wheel in a fixed structure.

5. The rear wheel steering structure of a small-sized sweeper according to claim 1 is characterized in that: Steering sprockets (16) connected to the chains (9) are arranged on both sides of the vehicle body (1) between the passive sprocket (7) and the active sprocket (8), and the four steering sprockets (16) are arranged in a trapezoidal structure.

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