Double-wheel type steering wheel

Abstract

The utility model provides a double-wheel type steering wheel. The double-wheel type steering wheel comprises a rotary supporting bearing, a mounting plate, a corner driving device, a rolling wheel mounting frame and rolling wheels. The rotary support bearing comprises an inner ring and an outer gear ring rotationally connected to the outer side of the inner ring; the inner ring, the mounting plate and the roller mounting rack are fixedly connected from top to bottom; the corner driving device is fixed to one side of the mounting plate, and the power output end of the corner driving device is in transmission connection with the outer gear ring. The number of the rolling wheels is two. The two rollers are arranged side by side left and right and are mounted at the bottom of the roller mounting frame through mounting shafts; according to the steering wheel, the double-roller structure is adopted, so that the rolling friction force borne by the wheel can be effectively reduced in the rotating process, the service life of the rollers can be prolonged, and the stability in the rotating process can be improved.

Description

Technical Field

[0001] This utility model relates to the field of AGV technology, and in particular to a dual-wheel steering wheel. Background Technology

[0002] Currently, the steering wheels of AGVs typically use a single-wheel structure. When turning during travel, the width of a single wheel is relatively large, resulting in high rolling friction and wear on the wheel, leading to a short service life. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a dual-wheel steering wheel to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A dual-wheel steering wheel includes a slewing support bearing, a mounting plate, a cornering drive device, a roller mounting bracket, and rollers. The slewing support bearing includes an inner ring and an outer gear ring rotatably connected to the outside of the inner ring. The inner ring, the mounting plate, and the roller mounting bracket are fixedly connected from top to bottom. The cornering drive device is fixed to one side of the mounting plate, and its power output end is connected to the outer gear ring. Two rollers are provided. The two rollers are arranged side by side and mounted on the bottom of the roller mounting bracket via a mounting shaft.

[0006] In a further description of this utility model, a plurality of screws are distributed circumferentially on the inner ring; the screws pass through the mounting plate and are locked onto the roller mounting bracket.

[0007] Further description of this utility model: the mounting plate includes a fixed mounting part and a motor mounting part connected to one side of the fixed mounting part; the corner drive device includes a reduction motor and a gear; the reduction motor is fixed on the motor mounting part and its power output end is connected to the gear; the gear meshes with an external gear ring.

[0008] Further description of this utility model: micro switch mounting portions extend from the front and rear sides of the motor mounting portion; a U-shaped opening is formed between the micro switch mounting portions and the fixed mounting portion; micro switches are respectively mounted on the two micro switch mounting portions; a sensor is mounted on the mounting plate on the other side corresponding to the motor mounting portion via a connecting block; a limit block is fixed at the bottom of the external gear ring; the sensor is used to sense the limit block; when the limit block enters the U-shaped opening, it contacts the micro switch and triggers the micro switch.

[0009] In a further description of this utility model, three washers are mounted on the mounting shaft; the three washers are spaced apart on both sides of the two rollers.

[0010] The beneficial effects of this utility model are as follows:

[0011] The steering wheel in this design adopts a double roller structure, which can effectively reduce the rolling friction of the wheel during rotation, thereby not only improving the service life of the roller but also improving the stability of rotation. Attached Figure Description

[0012] Figure 1 This is an overall structural diagram of the present invention;

[0013] Figure 2 This is a structural diagram of the mounting plate and the corner drive device of this utility model;

[0014] Figure 3 This is a connection structure diagram of the roller mounting bracket and the mounting shaft of this utility model;

[0015] Figure 4 This is a structural diagram of the slewing bearing of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] like Figure 1-4 As shown, a dual-wheel steering wheel includes a slewing support bearing 1, a mounting plate 2, a cornering drive device 3, a roller mounting frame 4, and rollers 5. The slewing support bearing 1 includes an inner ring 11 and an outer gear ring 12 rotatably connected to the outside of the inner ring 11. The inner ring 11, the mounting plate 2, and the roller mounting frame 4 are fixedly connected from top to bottom. The cornering drive device 3 is fixed to one side of the mounting plate 2, and its power output end is connected to the outer gear ring 12. Two rollers 5 are provided. The two rollers 5 are arranged side by side and mounted on the bottom of the roller mounting frame 4 through a mounting shaft 6. In this design, the outer gear ring 12 is used to fix the bottom of the AGV trolley. After the cornering drive device 3 is started, it controls the rotation of the mounting plate 2, the roller mounting frame 4, and the inner ring 11 to achieve the steering of the AGV trolley. The steering wheel of this design adopts a dual-roller 5 structure, which can effectively reduce the rolling friction of the wheels during rotation, which can not only improve the service life of the rollers 5, but also improve the stability during rotation.

[0018] The inner ring 11 is provided with a plurality of screws 111 distributed around its circumference; the screws 111 pass through the mounting plate 2 and are locked onto the roller mounting bracket 4 to improve the stability of the installation.

[0019] The mounting plate 2 includes a fixed mounting part 21 and a motor mounting part 22 connected to one side of the fixed mounting part 21. The corner drive device 3 includes a reduction motor 31 and a gear 32. The reduction motor 31 is fixed on the motor mounting part 22 and its power output end is connected to the gear 32. The gear 32 meshes with the outer gear ring 12. The reduction motor 31 controls the gear 32 to rotate while the outer gear ring 12 remains stationary. When the gear 32 meshes with the outer gear ring 12, the gear 32 rotates around the outer gear ring 12, thereby driving the mounting plate 2, the roller 5 mounting bracket, the inner ring 11, etc. to rotate synchronously.

[0020] Microswitch mounting portions 23 extend from the front and rear sides of the motor mounting portion 22; a U-shaped opening is formed between the microswitch mounting portion 23 and the fixed mounting portion 21; microswitches 7 are respectively mounted on the two microswitch mounting portions 23; a sensor 8 is mounted on the mounting plate 2 on the other side corresponding to the motor mounting portion 22 via a connecting block 24; a limit block 121 is fixed at the bottom of the external gear ring 12; the sensor 8 is used to sense the limit block 121; when the limit block 121 enters the U-shaped opening, it contacts the microswitch 7 and triggers the microswitch 7; when the sensor 8 senses the limit block 121, the AGV is in a reset straight-line state; during rotation, when the limit block 121 enters the U-shaped opening and triggers the microswitch 7, the AGV is in the maximum turning angle position, and the microswitch 7 controls the reduction motor 31 to stop working.

[0021] Three washers 61 are installed on the mounting shaft 6. The three washers 61 are spaced apart on both sides of the two rollers 5. The left washer 61 abuts against the left inner wall of the roller mounting frame 4 and the left end face of the left roller 5. The middle washer 61 abuts between the two rollers 5. The right washer 61 abuts against the right inner wall of the roller mounting frame 4 and the right end face of the right roller 5. The structure is stable and prevents the rollers 5 from shaking.

[0022] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. A dual-wheel steering wheel, comprising a slewing support bearing, a mounting plate, a cornering drive device, a roller mounting bracket, and rollers; characterized in that: The slewing support bearing includes an inner ring and an outer gear ring rotatably connected to the outside of the inner ring; the inner ring, the mounting plate, and the roller mounting bracket are fixedly connected from top to bottom; the slewing drive device is fixed on one side of the mounting plate and its power output end is connected to the outer gear ring; two rollers are provided; the two rollers are arranged side by side and mounted on the bottom of the roller mounting bracket through the mounting shaft.

2. The dual-wheel steering wheel according to claim 1, characterized in that: The inner ring is provided with a number of screws distributed around its circumference; the screws pass through the mounting plate and are locked onto the roller mounting bracket.

3. A dual-wheel steering wheel according to claim 1, characterized in that: The mounting plate includes a fixed mounting part and a motor mounting part connected to one side of the fixed mounting part; the corner drive device includes a geared motor and a gear; the geared motor is fixed on the motor mounting part and its power output end is connected to the gear; the gear meshes with an external gear ring.

4. A dual-wheel steering wheel according to claim 3, characterized in that: Microswitch mounting portions extend from the front and rear sides of the motor mounting portion; a U-shaped opening is formed between the microswitch mounting portion and the fixed mounting portion; microswitches are respectively mounted on the two microswitch mounting portions; a sensor is mounted on the other side of the mounting plate corresponding to the motor mounting portion via a connecting block; a limit block is fixed at the bottom of the external gear ring; the sensor is used to sense the limit block; when the limit block enters the U-shaped opening, it contacts the microswitch and triggers the microswitch.

5. A dual-wheel steering wheel according to claim 1, characterized in that: Three washers are installed on the mounting shaft; the three washers are spaced apart on both sides of the two rollers.

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