Steering device for sweeper

Abstract

The utility model discloses a steering device for a sweeper, which is used in conjunction with two front wheels of the sweeper, comprising a steering fixing plate installed on the chassis of the sweeper, an active steering device rotatably penetrating the steering fixing plate, a driven steering device meshing with the active steering device, the driven steering device rotatably mounted on the steering fixing plate, a steering tie rod rotatably installed on the driven steering device, the steering tie rod extends toward one of the front wheels and is rotatably connected with the front wheel, a synchronous tie rod is rotatably connected between the two front wheels; the active steering device is connected to the steering wheel through a steering column, when the steering wheel is turned, the active steering device will generate synchronous rotation, and the driven steering device meshing therewith will also generate rotation, the walking direction of the front wheel connected thereto is changed by the steering tie rod, and under the action of the synchronous tie rod, the other front wheel also achieves synchronous steering, so that the sweeper has a fast steering response, simple and labor-saving operation, and simple components for realizing rotation, which helps to reduce its configuration cost.

Description

Technical Field

[0001] The utility model relates to the technical field of control operation of a sweeping vehicle, and in particular to a device for controlling the steering of the sweeping vehicle. Background Art

[0002] The four-wheel electric sweeper does not raise dust and has low noise when cleaning. It is easy to control and operate. It can flexibly shuttle among the crowd. It is compact, lightweight, and easy to maintain. It is especially suitable for sanitation cleaning in crowded places such as schools, hospitals, and communities. However, the existing four-wheel electric sweepers are mostly turned by the meshing transmission of racks and gears, which has the disadvantages of difficult steering, heavy operation, laborious control, and high cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a sweeper steering device which has flexible steering, simple and labor-saving operation and low cost.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a sweeping vehicle steering device, used in conjunction with the two front wheels of the sweeping vehicle, includes a steering fixing plate fixedly installed on the chassis of the sweeping vehicle, an active steering device is rotatably installed through the steering fixing plate, a driven steering device is meshed with the active steering device, the driven steering device is rotatably installed on the steering fixing plate, a steering rod is rotatably installed on the driven steering device, the steering rod extends toward one of the front wheels and is rotatably connected to the front wheel, and a synchronization rod is rotatably connected between the two front wheels.

[0005] As a preferred technical solution, the active steering device includes a steering shaft that passes through the steering fixing plate and is rotatably arranged, and the bottom end of the steering shaft is fixedly connected to a steering gear.

[0006] As a preferred technical solution, a limit assembly groove is provided at the top end of the steering shaft for facilitating assembly connection, and the limit assembly groove is arranged through the center of the end surface of the steering shaft.

[0007] As a preferred technical solution, a steering sleeve is fixedly provided on the top end of the steering fixing plate, and the steering shaft passes through the steering sleeve.

[0008] As a preferred technical solution, two supporting square tubes are relatively fixed at the bottom end of the sweeper chassis, and the steering fixing plate is fixedly straddled on the bottom ends of the two supporting square tubes.

[0009] As a preferred technical solution, the driven steering device includes a steering movable plate arranged below the steering fixed plate, the steering movable plate is rotatably connected to the steering fixed plate via an installation shaft, a driven steering plate is fixedly mounted on the steering movable plate, and the driven steering plate is provided with meshing teeth meshing with the steering gear.

[0010] As a preferred technical solution, the steering movable plate is provided with a steering connecting plate which is bent and extended downward, and the steering tie rod is rotatably mounted on the steering connecting plate.

[0011] As a preferred technical solution, tie rod connecting plates are fixedly installed on the inner sides of the two front wheels respectively, the steering tie rod is rotatably arranged on the corresponding tie rod connecting plates, and both ends of the synchronization tie rod are rotatably arranged on the corresponding tie rod connecting plates.

[0012] As a preferred technical solution, two relatively arranged steering axles are fixedly installed at the bottom end of the sweeper chassis, and the bottom end of each steering axle is fixedly connected with a steering axle connecting plate, and each steering axle connecting plate is fixedly connected to the top outer wall of the steering axle, and the two front wheels are correspondingly assembled at the two ends of the steering axle.

[0013] As an improvement to the above technical solution, a lifting plate is installed through the steering bridge frame, and two U-shaped lifting arms are detachably installed on the lifting plate. The two lifting arms are arranged on both sides of the steering bridge frame opposite to each other, and the steering bridge is arranged through each of the lifting plates.

[0014] Due to the adoption of the above technical scheme, the steering device of the sweeper is used in conjunction with the two front wheels of the sweeper, including a steering fixing plate fixedly installed on the chassis of the sweeper, an active steering device is rotatably installed through the steering fixing plate, and a driven steering device is meshed with the active steering device, the driven steering device is rotatably installed on the steering fixing plate, a steering rod is rotatably installed on the driven steering device, the steering rod extends toward one of the front wheels and is rotatably connected to the front wheel, and a synchronous rod is rotatably connected between the two front wheels; the utility model has the following beneficial effects: the active steering device is connected to the steering wheel through a steering column, and when the steering wheel is turned, the active steering device will produce synchronous rotation, and the driven steering device meshed therewith will also produce rotation, and the walking direction of the front wheel connected thereto is changed by the steering rod, and under the action of the synchronous rod, the other front wheel also achieves synchronous steering, so that the sweeper has a fast steering response, simple and labor-saving operation, and simple components for realizing rotation, which helps to reduce its configuration cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the active steering device of an embodiment of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a steering fixed plate according to an embodiment of the utility model;

[0019] Figure 4 It is a structural schematic diagram of a driven steering device according to an embodiment of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure after the embodiment of the utility model is assembled with the chassis of the sweeper;

[0021] Figure 6 yes Figure 5 Bottom view of

[0022] In the figure: 1-sweeper chassis; 2-steering fixed plate; 3-active steering device; 31-steering shaft; 32-limiting assembly groove; 33-steering shaft sleeve; 34-steering gear; 4-driven steering device; 41-steering movable plate; 42-mounting shaft; 43-driven steering plate; 44-steering connecting plate; 5-steering rod; 6-front wheel; 7-synchronous rod; 8-steering column; 9-steering wheel; 10-supporting square tube; 11-tie rod connecting plate; 12-steering bridge frame; 13-steering bridge connecting plate; 14-steering bridge; 15-hoisting plate; 16-hoisting arm. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0024] like Figures 1 to 6As shown, the sweeper steering device is used in conjunction with the two front wheels of the sweeper to control the sweeper to turn. The fast steering response speed helps to improve the flexibility of the sweeper, making it more suitable for cleaning operations in crowded places. Specifically, it includes a steering fixing plate 2 fixedly mounted on the sweeper chassis 1, and the steering fixing plate 2 realizes the connection between the entire device and the sweeper chassis 1. An active steering device 3 is rotatably mounted through the steering fixing plate 2, and a driven steering device 4 is engaged with the active steering device 3. The driven steering device 4 is rotatably mounted on the steering fixing plate 2, and a steering rod 5 is rotatably mounted on the driven steering device 4. The steering rod 5 extends toward one of the front wheels 6 and is rotatably connected to the front wheel 6. A synchronous rod 7 is rotatably connected between the two front wheels 6. In this embodiment, the active steering device 3 and the driven steering device 4 are meshed to drive each other, so as to pull the steering rod 5 to change the walking direction of one of the front wheels 6. Under the action of the synchronization rod 7, the walking direction of the other front wheel 6 is also changed synchronously, thereby finally achieving the change of the walking direction of the sweeper.

[0025] like Figure 2 and Figure 3 As shown, the active steering device 3 includes a steering shaft 31 that is rotatably arranged through the steering fixing plate 2, and a limit assembly groove 32 is provided at the top of the steering shaft 31 for easy assembly and connection. The limit assembly groove 32 is arranged through the center of the end face of the steering shaft 31, and is limitedly installed with the steering column 8 of the sweeper through the limit assembly groove 32. The top of the steering column 8 is fixedly installed with a steering wheel 9. When the walking direction of the sweeper needs to be changed, the steering wheel 9 is turned, and the steering shaft 31 realizes synchronous rotation under the connection and transmission action of the steering column 8. A steering shaft sleeve 33 is fixedly arranged at the top of the steering fixing plate 2, and the steering shaft 31 is arranged through the steering shaft sleeve 33. The steering shaft sleeve 33 has a certain guiding and limiting effect on the steering shaft 31 to prevent it from shaking and make its rotation more stable.

[0026] In this embodiment, a steering gear 34 is fixedly connected to the bottom end of the steering shaft 31 for generating steering torque. Two supporting square tubes 10 are relatively fixed to the bottom end of the sweeper chassis 1, and the steering fixing plate 2 is fixedly straddled at the bottom ends of the two supporting square tubes 10. The arrangement of the supporting square tubes 10 allows a certain distance to be formed between the steering fixing plate 2 and the sweeper chassis 1 to accommodate the steering gear 34, so that it can be designed to have a larger thickness to improve the stability of the meshing.

[0027] like Figure 4As shown, the driven steering device 4 includes a steering movable plate 41 arranged below the steering fixed plate 2, and the steering movable plate 41 is rotatably connected with the steering fixed plate 2 through a mounting shaft 42. Under the rotational mounting cooperation of the mounting shaft 42, the steering movable plate 41 can rotate back and forth to facilitate the transmission of steering force. A driven steering plate 43 is fixedly mounted on the steering movable plate 41, and the driven steering plate 43 is provided with meshing teeth meshing with the steering gear 34, and the meshing teeth are distributed in an arc shape on the driven steering plate 43. When the steering gear 34 rotates under the control of the steering wheel 9, the driven steering plate 43 rotates synchronously, and indirectly drives the steering movable plate 41 to rotate synchronously along the mounting shaft 42, so as to push and pull the front wheel 6 connected thereto through the steering tie rod 5, so that its travel direction is changed.

[0028] The steering movable plate 41 of this embodiment is provided with a steering connecting plate 44 that is bent and extended downward, and the steering tie rod 5 is rotatably mounted on the steering connecting plate 44. The steering connecting plate 44 is used to adapt to the height of the connection between the steering tie rod 5 and the front wheel 6 to reduce the inclination angle of the steering tie rod 5. Tie rod connecting plates 11 are respectively fixedly mounted on the inner sides of the two front wheels 6, and the steering tie rod 5 is rotatably mounted on the corresponding tie rod connecting plates 11, and the two ends of the synchronous tie rod 7 are rotatably mounted on the corresponding tie rod connecting plates 11. In fact, the steering connecting plate 44 is arranged on the universal joint of the front wheel 6 for connecting its steering axle 14. The main structure of this embodiment is a plate body and a rod body, so the process is simple and the cost is low.

[0029] like Figure 5 and Figure 6 As shown, two steering axles 12 arranged opposite to each other are fixedly mounted at the bottom end of the sweeper chassis 1, and a steering axle connecting plate 13 is fixedly connected to the bottom end of each steering axle 12, and each steering axle connecting plate 13 is fixedly connected to the top outer wall of the steering axle 14, and the two front wheels 6 are correspondingly mounted at the two ends of the steering axle 14, and a steering knuckle is provided between the steering axle 14 and the two front wheels 6. The steering axle 14 is connected to the sweeper chassis 1 through the cooperation of the steering axle 12 and the steering axle connecting plate 13.

[0030] In this embodiment, a hoisting plate 15 is installed through the steering bridge frame 12, and two U-shaped hoisting arms 16 are detachably installed on the hoisting plate 15. The two hoisting arms 16 are arranged on both sides of the steering bridge frame 12, and the steering bridge 14 is arranged through each of the hoisting plates 15. The arrangement of the hoisting arms 16 improves the firmness of the installation of the steering bridge 14, making the sweeper more stable and safe.

[0031] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

Claims

1. A sweeper steering device, used in conjunction with the two front wheels of the sweeper, comprises a steering fixing plate fixedly mounted on the chassis of the sweeper, and is characterized by: An active steering device is rotatably mounted through the steering fixed plate, a driven steering device is meshed with the active steering device, the driven steering device is rotatably mounted on the steering fixed plate, a steering rod is rotatably mounted on the driven steering device, the steering rod extends toward one of the front wheels and is rotatably connected to the front wheel, and a synchronization rod is rotatably connected between the two front wheels.

2. The sweeper steering device according to claim 1, characterized in that: The active steering device comprises a steering shaft which penetrates through the steering fixing plate and is rotatably arranged, and a steering gear is fixedly connected to the bottom end of the steering shaft.

3. The sweeper steering device according to claim 2, characterized in that: The top end of the steering shaft is provided with a limiting assembly groove for easy assembly and connection, and the limiting assembly groove is arranged through the center of the end surface of the steering shaft.

4. The sweeper steering device according to claim 1, characterized in that: A steering sleeve is fixedly provided on the top end of the steering fixing plate, and the steering shaft passes through the steering sleeve.

5. The sweeper steering device according to claim 1, characterized in that: Two supporting square tubes are relatively fixed at the bottom end of the sweeper chassis, and the steering fixing plate is fixedly straddled on the bottom ends of the two supporting square tubes.

6. The sweeper steering device according to claim 2, characterized in that: The driven steering device includes a steering movable plate arranged below the steering fixed plate, the steering movable plate is rotatably connected to the steering fixed plate via a mounting shaft, a driven steering plate is fixedly mounted on the steering movable plate, and meshing teeth meshing with the steering gear are provided on the driven steering plate.

7. The sweeper steering device according to claim 6, characterized in that: The steering movable plate is provided with a steering connecting plate which is bent and extended downward, and the steering tie rod is rotatably mounted on the steering connecting plate.

8. The sweeper steering device according to claim 1, characterized in that: The inner sides of the two front wheels are respectively fixedly mounted with tie rod connecting plates, the steering tie rod is rotatably arranged on the corresponding tie rod connecting plates, and the two ends of the synchronous tie rod are rotatably arranged on the corresponding tie rod connecting plates.

9. The sweeper steering device according to claim 8, characterized in that: Two relatively arranged steering axles are fixedly installed at the bottom end of the sweeper chassis, and the bottom end of each steering axle is fixedly connected with a steering axle connecting plate, and each steering axle connecting plate is fixedly connected to the top outer wall of the steering axle, and the two front wheels are correspondingly assembled at the two ends of the steering axle.

10. The sweeper steering device according to claim 9, characterized in that: A hoisting plate is installed through the steering bridge frame, and two U-shaped hoisting arms are detachably installed on the hoisting plate. The two hoisting arms are arranged on both sides of the steering bridge frame opposite to each other, and the steering bridge is arranged through each hoisting plate.

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