Trolley steering driving structure

Abstract

The utility model provides a trolley steering driving structure which comprises a trolley chassis, driving seats are rotatably connected to the periphery of the bottom end of the trolley chassis, an upper rotating rod and a lower rotating rod are rotatably connected to the interiors of the four driving seats respectively, a hub is fixedly installed on the outer side of the lower rotating rod, and a tire is fixedly installed on the outer side of the hub. The protective cover has the beneficial effects that the rack slides in the driving seat, so that the rack can drive the adjusting ring to rotate on the hub under the condition that the tire does not rotate, and the protective cover is driven by the adjusting ring to slide outwards from the interior of the driving seat to the bottom end of the tire; the tire is moved to the inner side position of the protective cover to be separated from the ground, and the contact surface between the protective cover and the ground is small, so that the driving seat can adjust the tire through rotation between the protective cover and the ground when steering the tire; therefore, the vertical friction loss between the tire and the ground when the tire needs to be steered at a large angle can be effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the field of intelligent vehicle technology, specifically relating to a vehicle steering drive structure. Background Technology

[0002] The intelligent vehicle can display time, speed, and mileage in real time, and has functions such as automatic track following, light-finding, and obstacle avoidance. It can also programmatically control driving speed, accurately locate and park, and remotely transmit images. Currently, the steering drive system mainly suffers from the following generally accepted shortcomings:

[0003] In the traditional steering drive process of a small car, when the car is turning, the tires deviate from their position or while rotating. Since the tires are cylindrical, when making large-angle turns, the outer surface of the tire is in a vertical rotation state with respect to the ground, which increases the friction between the ground and the tire and the wear during the turning process. Traditional drive devices cannot reduce the vertical friction loss between the tire and the ground during the turning process. Utility Model Content

[0004] The purpose of this invention is to provide a steering drive structure for a car, which aims to solve the problem in the prior art that it is impossible to reduce the vertical friction loss between the tire and the ground during steering.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A steering drive structure for a small vehicle includes a vehicle chassis. Drive seats are rotatably connected to the bottom of the chassis. Upper and lower rotating rods are rotatably connected inside the four drive seats. A wheel hub is fixedly mounted on the outer side of the lower rotating rod, and a tire is fixedly mounted on the outer side of the wheel hub. Adjusting rings are rotatably connected to both sides of the wheel hub. A protective cover is fixedly mounted on the outer side of the adjusting rings. An adjusting gear ring is fixedly mounted on the outer side of the adjusting gear ring, and a rack meshes with the outer side of the adjusting gear ring. An electric telescopic rod is fixedly mounted at one end of the rack. The fixed end of the electric telescopic rod is fixedly connected to the inner wall of the drive seat, and the outer side of the rack is slidably connected to the inner wall of the drive seat.

[0007] In a preferred embodiment of this utility model, a steering gear ring is fixedly installed on the top outer side of the drive seat, and multiple steering rods are rotatably connected inside the trolley chassis. Steering gears are fixedly installed at the bottom ends of the multiple steering rods, and the outer side of the steering gear meshes with the outer side of the steering gear ring.

[0008] In a preferred embodiment of this invention, a drive rod is rotatably connected to the top of the drive base, and bevel gears are fixedly installed at the bottom end of the drive rod and on the outer side of the upper rotating rod.

[0009] In a preferred embodiment of this utility model, both ends of the upper and lower rotating rods are fixedly equipped with linkage wheels, and a belt is sleeved on the outer side of the linkage wheel.

[0010] In a preferred embodiment of this invention, sprockets are fixedly mounted on the top ends of both the steering rod and the drive rod, and a chain is sleeved on the outer side of the sprockets.

[0011] In a preferred embodiment of this utility model, a steering motor and a drive motor are fixedly installed inside the chassis of the vehicle, wherein the bottom end of one of the steering rods is fixedly connected to the output end of the steering motor, and the top end of one of the drive rods is fixedly connected to the output end of the drive motor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) By sliding the rack inside the drive unit, the rack can drive the adjusting ring to rotate on the wheel hub without the tire rotating. This causes the protective cover to slide outward from inside the drive unit to the bottom of the tire, and moves the tire to the inner side of the protective cover, separating it from the ground. Since the contact area between the protective cover and the ground is small, the drive unit can adjust the steering of the tire by rotating the protective cover with the ground. This effectively reduces the vertical friction loss between the tire and the ground when large-angle steering is required.

[0014] 2) The steering rod, under the action of the adjusting gear and adjusting ring, drives the drive seat to rotate inside the chassis of the car from the outside. The rotation of the drive seat causes the tire to rotate. The drive rod also drives the first and second rotating rods to rotate, so that the tire can be adjusted and driven synchronously in the same direction. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the sprocket structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the steering rod structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the drive seat of this utility model;

[0020] Figure 5 This is a schematic diagram of the adjusting ring structure of this utility model.

[0021] In the diagram: 1. Car chassis; 2. Drive seat; 21. Steering gear ring; 22. Steering rod; 23. Steering gear; 24. Steering motor; 3. Upper steering rod; 31. Linkage wheel; 32. Belt; 4. Lower steering rod; 41. Wheel hub; 42. Tire; 5. Adjusting ring; 51. Protective cover; 52. Adjusting gear ring; 53. Rack; 54. Electric telescopic rod; 6. Drive rod; 61. Bevel gear; 62. Drive motor; 7. Sprocket; 71. Chain. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 The present invention provides the following technical solution: a steering drive structure for a car, including a car chassis 1, drive seats 2 rotatably connected to the bottom of the car chassis 1, upper rotating rods 3 and lower rotating rods 4 rotatably connected to the interior of the four drive seats 2 respectively, a wheel hub 41 fixedly installed on the outer side of the lower rotating rod 4, a tire 42 fixedly installed on the outer side of the wheel hub 41, an adjusting ring 5 rotatably connected to both sides of the wheel hub 41, a protective cover 51 fixedly installed on the outer side of the adjusting ring 5, an adjusting gear ring 52 fixedly installed on the outer side of the adjusting ring 5, a rack 53 meshing on the outer side of the adjusting gear ring 52, an electric telescopic rod 54 fixedly installed at one end of the rack 53, the fixed end of the electric telescopic rod 54 fixedly connected to the inner wall of the drive seat 2, and the outer side of the rack 53 slidably connected to the inner wall of the drive seat 2.

[0024] In practical use, when using this drive device to adjust the direction of the trolley, the electric telescopic rod 54 drives the rack 53 to slide inside the drive seat 2, causing the rack 53 to rotate the adjusting ring 52, which in turn rotates the adjusting ring 5 on the outside of the wheel hub 41. This, in turn, causes the protective cover 51 to rotate outward from inside the drive seat 2 until it reaches the bottom of the tire 42, thus detaching the tire 42 from the ground. At this point, the tire 42 contacts the ground through the protective cover 51, and the drive seat 2 as a whole provides significant adjustment to the tire 42. When the angle is rotated, the protective cover 51 can rotate on the ground, reducing the wear between the tire 42 and the ground when making large-angle turns, thus effectively protecting the steering drive of the tire 42. After the tire 42 is oriented, the protective cover 51 can be rotated in the opposite direction to the drive seat 2 through the reverse sliding of the rack 53, so that the tire 42 contacts the ground. The upper rotating rod 3 drives the lower rotating rod 4 to rotate, and then the lower rotating rod 4 drives the wheel hub 41 and the tire 42 to rotate, keeping the chassis 1 of the car moving forward in the direction of the tire 42.

[0025] Preferably, a steering gear ring 21 is fixedly installed on the top outer side of the drive seat 2, and multiple steering rods 22 are rotatably connected inside the chassis 1. Steering gears 23 are fixedly installed at the bottom ends of the multiple steering rods 22, and the outer side of the steering gears 23 meshes with the outer side of the steering gear ring 21.

[0026] In practical use, when the drive seat 2 needs to be adjusted in the reverse direction inside the chassis 1, the steering gear 23 can be rotated by the steering rod 22, and then the steering gear 23 can act on the steering ring 21 to make the drive seat 2 rotate as a whole inside the chassis 1, so as to achieve the steering effect of the tire 42.

[0027] Preferably, a drive rod 6 is rotatably connected to the top of the drive base 2, and a bevel gear 61 is fixedly installed at the bottom end of the drive rod 6 and on the outer side of the upper rotating rod 3.

[0028] In practical use, when the tire 42 needs to rotate to drive the trolley chassis 1 to move, the drive seat 2 does not rotate with respect to the trolley chassis 1. The rotation of the drive rod 6 inside the trolley chassis 1, and the action of the bevel gear 61, drives the upper rotating rod 3 inside the drive seat 2 to rotate.

[0029] Preferably, both ends of the upper rotating rod 3 and the lower rotating rod 4 are fixedly installed with linkage wheels 31, and a belt 32 is sleeved on the outer side of the linkage wheels 31.

[0030] In practical use, when the upper rotating rod 3 rotates, the lower rotating rod 4 inside the drive seat 2 can be driven to rotate synchronously and in the same direction through the action of the linkage wheel 31 and the belt 32. Thus, the rotation of the lower rotating rod 4 can drive the wheel hub 41 and the tire 42 to rotate, and the trolley chassis 1 can be moved by rotating along the direction of the tire 42.

[0031] Preferably, sprockets 7 are fixedly installed at the top of both the steering rod 22 and the drive rod 6, and a chain 71 is sleeved on the outer side of the sprockets 7.

[0032] In practical use, the four tires 42 inside the chassis 1 of the car can be linked by the sprocket 7 and the chain 71 to rotate the four drive rods 6 synchronously. Similarly, the steering rod 22 can drive the four tires 42 to adjust and drive in the same direction through the action of the sprocket 7 and the chain 71.

[0033] Preferably, a steering motor 24 and a drive motor 62 are fixedly installed inside the chassis 1 of the vehicle. The bottom end of one steering rod 22 is fixedly connected to the output end of the steering motor 24, and the top end of one drive rod 6 is fixedly connected to the output end of the drive motor 62.

[0034] In practical use, the steering lever 22 adjusts the direction of the tire 42 through the steering motor 24, and the tire 42 is driven by the drive motor 62 to drive the drive lever 6, which in turn drives the chassis 1 of the car to move.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A trolley steering drive structure comprising a trolley chassis (1), characterized in that, The bottom of the chassis (1) of the car is rotatably connected to drive seats (2). The interior of the four drive seats (2) is rotatably connected to upper rotating rods (3) and lower rotating rods (4). A wheel hub (41) is fixedly installed on the outer side of the lower rotating rod (4). A tire (42) is fixedly installed on the outer side of the wheel hub (41). Adjusting rings (5) are rotatably connected to both sides of the wheel hub (41). A protective cover (51) is fixedly installed on the outer side of the adjusting ring (5). An adjusting gear ring (52) is fixedly installed on the outer side of the adjusting ring (5). A rack (53) meshes with the outer side of the adjusting gear ring (52). An electric telescopic rod (54) is fixedly installed at one end of the rack (53). The fixed end of the electric telescopic rod (54) is fixedly connected to the inner wall of the drive seat (2). The outer side of the rack (53) is slidably connected to the inner wall of the drive seat (2).

2. The trolley steering drive structure according to claim 1, characterized in that: A steering gear ring (21) is fixedly installed on the top outer side of the drive seat (2). Multiple steering rods (22) are rotatably connected inside the chassis (1). Steering gears (23) are fixedly installed at the bottom ends of the multiple steering rods (22). The outer side of the steering gears (23) meshes with the outer side of the steering gear ring (21).

3. The trolley turning and driving structure according to claim 2, characterized in that: The top of the drive seat (2) is also rotatably connected to a drive rod (6), and a bevel gear (61) is fixedly installed at the bottom end of the drive rod (6) and on the outside of the upper rotating rod (3).

4. The trolley steering drive structure according to claim 1, characterized in that: Both ends of the upper rotating rod (3) and the lower rotating rod (4) are fixedly installed with linkage wheels (31), and a belt (32) is sleeved on the outside of the linkage wheel (31).

5. The trolley turning and driving structure according to claim 3, characterized in that: Both the steering rod (22) and the drive rod (6) are fixedly mounted with sprockets (7), and a chain (71) is sleeved on the outside of the sprockets (7).

6. The trolley turning and driving structure according to claim 5, characterized in that: The chassis (1) of the vehicle is equipped with a steering motor (24) and a drive motor (62) respectively. The bottom end of one of the steering rods (22) is fixedly connected to the output end of the steering motor (24), and the top end of one of the drive rods (6) is fixedly connected to the output end of the drive motor (62).

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