Cam resetting device

Abstract

The utility model discloses a cam resetting device, which relates to the technical field of steering systems and comprises a driving motor, a first gear, a second gear, a first transmission shaft, a cam and an ejector rob, the first gear is arranged on an output shaft of the driving motor, the second gear is connected onto the first transmission shaft through a one-way bearing, and the cam is arranged on the first transmission shaft. The first gear is in meshed connection with the second gear; the first end of the first transmission shaft is in transmission connection with the cam through a first transmission mechanism, the ejector rod abuts against the cam, and the cam can push the ejector rod to move so as to drive front wheels of the robot trolley to steer. The second end of the first transmission shaft can be in transmission connection with a driving wheel through a second transmission mechanism so as to drive the driving wheel to rotate, and the cam can be connected with the driving wheel through the second transmission shaft. The reset device can reduce the reset difficulty and improve the reset precision.

Description

Technical Field

[0001] This utility model relates to the field of steering system technology, and in particular to a cam reset device. Background Technology

[0002] Currently, the steering of the front wheels of a robotic vehicle is usually controlled by a cam mechanism. However, existing cam mechanisms typically use deep groove ball bearings to drive the cam to rotate and achieve the angle control of the front wheels. However, because it requires many rotations, the reset speed is slow and it cannot accurately return to the initial point, resulting in low equipment operating efficiency.

[0003] Therefore, a cam reset device is provided to solve the above-mentioned technical problems existing in the prior art. Utility Model Content

[0004] The purpose of this invention is to provide a cam reset device to solve the problems existing in the prior art, thereby reducing the reset difficulty and improving the reset accuracy.

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

[0006] This utility model provides a cam reset device, including a drive motor, a first gear, a second gear, a first transmission shaft, a cam, and a push rod. The first gear is mounted on the output shaft of the drive motor, and the second gear is connected to the first transmission shaft via a one-way bearing, with the first gear and the second gear meshing together. The first end of the first transmission shaft is connected to the cam via a first transmission mechanism, and the push rod abuts against the cam. The cam can push the push rod to move, thereby driving the front wheels of a robot to steer. The second end of the first transmission shaft can be connected to a drive wheel via a second transmission mechanism to drive the drive wheel to rotate, and the cam can be connected to the drive wheel via the second transmission shaft.

[0007] Preferably, the first transmission mechanism includes a third gear and a fourth gear, the third gear is disposed at the first end of the first transmission shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the cam.

[0008] Preferably, the fourth gear is coaxially arranged with the cam, and the fourth gear is fixedly connected to the cam via a flange.

[0009] Preferably, the second transmission mechanism includes a fifth gear and a sixth gear. The fifth gear is disposed at the second end of the first transmission shaft, and the sixth gear meshes with the fifth gear and can be connected to the drive wheel.

[0010] Preferably, the sixth gear is coaxially arranged with the driving gear, and the sixth gear is connected to the driving gear through a bearing flange.

[0011] Preferably, it also includes a slide mechanism, through which the push rod can drive the front wheel to steer.

[0012] Preferably, the slide mechanism includes a slide rail and a slide table. The slide rail can be fixed to the body of the robot car and extends radially along the cam. The slide table is slidably disposed on the slide rail. The push rod is disposed at one end of the slide table near the cam, and the other end of the slide table is disposed near the front wheel, which can push the front wheel to steer.

[0013] Preferably, the push rod is also connected to a reset mechanism. When the protruding part of the cam abuts against the push rod, the front wheel is rotated through the slide mechanism. When the push rod is in the recessed part of the cam, the reset mechanism can reset the push rod.

[0014] Preferably, the reset mechanism is an elastic element.

[0015] Preferably, the elastic element is a return spring or an elastic cord.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] In this invention, the second gear is connected to the first transmission shaft via a one-way bearing. The one-way bearing can rotate freely in one direction and lock in the opposite direction. By utilizing its one-way rotatability, the small angle of the cam can be adjusted, achieving high accuracy in the driving route. Moreover, it reduces the time required for the cam to return to the initial point, resulting in higher efficiency and accuracy, thus reducing the difficulty of resetting and improving the accuracy of resetting. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the cam reset device in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the front wheel control in an embodiment of this utility model.

[0021] In the diagram: 1-Drive motor, 2-First gear, 3-Second gear, 4-First transmission shaft, 5-Cam, 6-Slide mechanism, 7-Push rod, 8-Third gear, 9-Fourth gear, 10-Second transmission shaft, 11-One-way bearing, 12-Fifth gear, 13-Sixth gear, 14-Front wheel, 15-Driving wheel, 16-Driven wheel. 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] The purpose of this invention is to provide a cam reset device to solve the problems existing in the prior art, thereby reducing the reset difficulty and improving the reset accuracy.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1

[0026] like Figures 1-2 As shown, this embodiment provides a cam reset device, mainly including a drive motor 1, a first gear 2, a second gear 3, a first transmission shaft 4, a cam 5, and a push rod 7. The first gear 2 is provided on the output shaft of the drive motor 1, and the second gear 3 is connected to the first transmission shaft 4 through a one-way bearing 11, and the first gear 2 and the second gear 3 are meshed together. The first end of the first transmission shaft 4 is connected to the cam 5 through a first transmission mechanism, and the push rod 7 abuts against the cam 5. The cam 5 can push the push rod 7 to move radially along the cam 5 to drive the front wheel 14 of the robot car to turn. The second end of the first transmission shaft 4 can be connected to the drive wheel 15 through a second transmission mechanism to drive the drive wheel 15 to rotate. The cam 5 can be connected to the drive wheel 15 through a second transmission shaft 10, and the end of the second transmission shaft 10 away from the drive wheel 15 is connected to the driven wheel 16.

[0027] In this embodiment, the second gear 3 is connected to the first transmission shaft 4 via a one-way bearing 11. The one-way bearing 11 can rotate freely in one direction and lock in the opposite direction. By utilizing its one-way rotatability, the small angle of the cam 5 can be adjusted, achieving high driving route accuracy. Moreover, it makes the time for the cam 5 to return to the initial point shorter, with higher efficiency and accuracy, thereby reducing the difficulty of resetting and improving the resetting accuracy.

[0028] In this embodiment, the first transmission mechanism can be selected according to the working needs. As a preferred embodiment, the first transmission mechanism includes a third gear 8 and a fourth gear 9. The third gear 8 is disposed at the first end of the first transmission shaft 4. The fourth gear 9 is meshed with the third gear 8 and is fixedly connected to the cam 5. The rotation of the first transmission shaft 4 can cause the third gear 8 to rotate. At the same time, the meshing of the third gear 8 and the fourth gear 9 can drive the cam 5 to rotate.

[0029] It should be noted that the fourth gear 9 is coaxially arranged with the cam 5, and the fourth gear 9 is fixedly connected to the cam 5 through a flange.

[0030] In this embodiment, the second transmission mechanism can be selected according to the working requirements. As a preferred embodiment, the second transmission mechanism includes a fifth gear 12 and a sixth gear 13. The fifth gear 12 is disposed at the second end of the first transmission shaft 4. The sixth gear 13 is meshed with the fifth gear 12 and can be connected to the drive wheel 15. The rotation of the first transmission shaft 4 can cause the fifth gear 12 to rotate. At the same time, the fifth gear 12 meshes with the sixth gear 13, which can drive the drive wheel 15 to rotate.

[0031] It should be noted that the sixth gear 13 is coaxially arranged with the driving wheel 15, and the sixth gear 13 is connected to the driving wheel 15 through a bearing flange.

[0032] In this embodiment, gear transmission is used. Gear transmission has the characteristics of accurate transmission ratio, strong load-bearing capacity and high reliability. The goal of stable driving is effectively achieved through gear transmission.

[0033] In this embodiment, a sliding mechanism 6 is also included. The push rod 7 can turn the front wheel 14 through the sliding mechanism 6. In this embodiment, the sliding mechanism 6 provides angle changes to the front wheel 14 more stably, making the driving more accurate. The sliding mechanism 6 mainly includes a slide rail and a sliding platform. The slide rail can be fixed to the body of the robot car and extends radially along the cam 5. The sliding platform is slidably disposed on the slide rail. The push rod is disposed at one end of the sliding platform near the cam 5, and the other end of the sliding platform is disposed near the front wheel 14, which can push the front wheel 14 to turn. Specifically, a vertical post is disposed at one end of the sliding platform near the front wheel 14, and a transverse rocker arm is disposed on the front wheel 14. The transverse rocker arm is relatively stationary with respect to the front wheel 14 and is in contact with the post. When the sliding platform drives the post to move back and forth, the transverse rocker arm can push the front wheel to turn.

[0034] In this embodiment, the push rod 7 is also connected to a reset mechanism. When the protruding part of the cam 5 presses against the push rod 7, the front wheel 14 is turned to the right by the slide mechanism 6. When the push rod 7 is in the recessed part of the cam 5, the reset mechanism can reset the push rod 7, that is, pull the push rod 7 back towards the cam 5 to achieve the effect of the front wheel 14 turning to the left.

[0035] The reset mechanism can be selected according to specific working needs. For example, it can be an elastic element, such as a reset spring or an elastic rope (e.g., a rubber band). Preferably, it is an elastic rope, with one end connected to the slide rail and the other end connected to the slide table or the top rod 7, so that the top rod 7 can be reset.

[0036] The working principle of the cam reset device in this embodiment is as follows:

[0037] The drive motor 1 controls the rotation of the first gear 2, which meshes with the second gear 3. The second gear 3 drives the first transmission shaft 4 to rotate, thereby causing the third gear 8 and the fifth gear 12 to rotate. Simultaneously, the third gear 8 meshes with the fourth gear 9, which is connected to the cam 5 via a flange, driving the cam 5 to rotate. The fifth gear 12 meshes with the sixth gear 13, driving the drive wheel 15 to rotate via a bearing flange. The first gear 2 transmits torque to the third gear 8 and the fifth gear 12 simultaneously through the second gear 3, making control simpler and more flexible. When the protruding part of the cam 5 presses against the push rod 7, the front wheel 14 rotates to the right via the slide mechanism 6. When the push rod 7 is in the recessed part of the cam 5, the elastic force of the rubber band pulls the push rod 7 back, achieving the effect of the front wheel 14 turning to the left. After the cam 5 completes one revolution, the trolley can travel along the predetermined target route. After the trolley has traveled a complete route, the cam 5 can be reset directly by rotating the drive wheel 15 under the action of the one-way bearing 11, thereby reducing the reset difficulty and improving the reset accuracy.

[0038] This embodiment will provide new ideas for the development of robot steering systems, and promote the development of mechanical vehicle technology towards a more efficient, flexible and intelligent direction.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cam return device characterized by: The system includes a drive motor, a first gear, a second gear, a first transmission shaft, a cam, and a push rod. The first gear is mounted on the output shaft of the drive motor, and the second gear is connected to the first transmission shaft via a one-way bearing, with the first gear and the second gear meshing together. The first end of the first transmission shaft is connected to the cam via a first transmission mechanism, and the push rod abuts against the cam. The cam can push the push rod to move, thereby driving the front wheels of the robot to steer. The second end of the first transmission shaft can be connected to a drive wheel via a second transmission mechanism to drive the drive wheel to rotate, and the cam can be connected to the drive wheel via the second transmission shaft.

2. The cam reset device of claim 1, wherein: The first transmission mechanism includes a third gear and a fourth gear. The third gear is disposed at the first end of the first transmission shaft, the fourth gear is meshed with the third gear, and the fourth gear is fixedly connected to the cam.

3. The cam reset device of claim 2, wherein: The fourth gear is coaxially arranged with the cam, and the fourth gear is fixedly connected to the cam via a flange.

4. The cam reset device of claim 1, wherein: The second transmission mechanism includes a fifth gear and a sixth gear. The fifth gear is disposed at the second end of the first transmission shaft, and the sixth gear meshes with the fifth gear and can be connected to the drive wheel.

5. The cam reset device of claim 4, wherein: The sixth gear is coaxially arranged with the driving gear, and the sixth gear is connected to the driving gear through a bearing flange.

6. The cam reset device of claim 1, wherein: It also includes a slide mechanism, through which the push rod can drive the front wheel to steer.

7. The cam reset device of claim 6, wherein: The slide mechanism includes a slide rail and a slide table. The slide rail can be fixed to the body of the robot car and extends radially along the cam. The slide table is slidably disposed on the slide rail. The push rod is disposed at one end of the slide table near the cam, and the other end of the slide table is disposed near the front wheel, which can push the front wheel to steer.

8. The cam reset device of claim 7, wherein: The push rod is also connected to a reset mechanism. When the protruding part of the cam abuts against the push rod, the front wheel is turned by the slide mechanism. When the push rod is in the recessed part of the cam, the reset mechanism can reset the push rod.

9. The cam reset device of claim 8, wherein: The reset mechanism is an elastic element.

10. The cam reset device of claim 9, wherein: The elastic element is a return spring or an elastic pull rope.

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