Clutch device and Mecanum wheel made of clutch device

Abstract

A clutch device comprises a connecting plate, the connecting plate is fixedly connected with a clutch bottom plate, a fluted disc of the clutch bottom plate is matched with a fluted disc of a spline shaft to form a clutch braking face, a cam capable of rotating automatically is arranged on the clutch device, the cam cannot move in the axial direction of the spline shaft, the cam is arranged on the outer side of the outer end of the spline shaft in a sleeving mode, and a cam pin is inserted into the outer end of the spline shaft. The cam pin is arranged in the radial direction of the spline shaft, the two ends of the cam pin are exposed to the outer side of the spline shaft, and the cam pin makes contact with the outer end face of the cam. Four positioning parts are arranged on the outer end face of the cam. Compared with the prior art, the clutch device has the technical effects that the clutch device is simple and reliable in structure and convenient to use, only the clutch tool needs to be inserted into the two holes in the cam when the clutch device is used, the time for manually opening and closing the clutch of the clutch device is short, the operation is convenient, and the maintainability of equipment is greatly improved.

Description

Technical Field

[0001] The present invention relates to a Mecanum wheel, in particular to a clutch device of a Mecanum wheel on a vehicle. Background Art

[0002] Currently, each wheel of existing Mecanum wheel vehicles is driven by a motor. When the vehicle needs to be towed, the brake that controls the rotation of the Mecanum wheel motor generally needs to be released so that the vehicle can be towed. When the brake fails or the power supply for controlling the brake is not powered, the brake cannot be released and the vehicle cannot be towed. Therefore, it is necessary to invent a Mecanum wheel that is convenient for vehicle towing and can quickly release the vehicle's brakes when the vehicle needs to be towed to achieve the vehicle's towing.

[0003] The invention patent "A Mecanum Wheel Brake Release Device", patent number ZL 201818005522.X, proposes a Mecanum wheel brake release device. When the sprocket needs to be towed, the sprocket key fixing screw is removed, and then the sprocket key is removed to release the Mecanum wheel brake towing. During towing, the sprocket idles and the vehicle can be towed.

[0004] The solution adopted by this invention patent has a simple structure and is convenient for releasing the brake. However, it takes a long time to remove the fixing screws of the sprocket key in an emergency, especially when the sprocket key needs to be reinstalled. When the vehicle is operating normally, the fixing screw holes of the sprocket key need to be aligned when installing the sprocket key. This is not easy to align and requires repeated operations, which is time-consuming. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to design a clutch device to facilitate brake release.

[0006] The technical solution of the present invention is specifically as follows: A clutch device comprises a connecting plate, which is fixedly connected to a clutch base plate, and a toothed disk of the clutch base plate cooperates with the toothed disk of the spline shaft to form a clutch braking surface. The clutch device is provided with a self-rotating cam, and the cam cannot move in the axial direction of the spline shaft. The cam is sleeved on the outer side of the outer end portion of the spline shaft, and a cam pin is inserted in the outer end portion. The cam pin is arranged along the radial direction of the spline shaft, and its two ends are exposed to the outside of the spline shaft, and the cam pin maintains contact with the outer end surface of the cam; the outer end surface of the cam is provided with four positioning grooves, and the four positioning grooves divide the outer end surface of the cam into four parts: two running surfaces and two base surfaces. The running surfaces and the base surfaces are staggered, and the running surfaces are inclined in the circumferential direction. The positioning groove located at the lower end of the running surface is a low-position positioning groove, and the positioning groove located at the higher end of the running surface is a high-position positioning groove.

[0007] The connecting plate is fixed to the bearing pressure plate by screws E. A bearing is provided between the connecting plate and the sprocket. The bearing cover is fixed to the sprocket by screws F. The spline shaft is connected to the bearing cover key by splines. The bearing cover is fixed to the end cover pressure plate by screws G. A cam is embedded in the end cover pressure plate. A compression spring is arranged on the outer surface of the spline shaft and is located between the toothed disc and the end cover pressure plate of the spline shaft.

[0008] The connecting plate is fixedly connected to the clutch base plate by screws; the two base surfaces are both provided with rotation grooves; and the four positioning grooves divide the outer end surface of the cam into four equal parts.

[0009] A Mecanum wheel comprises a support shaft, an axle seat fixed outside the support shaft, a wheel hub provided outside the axle seat, the wheel hub being divided into a wheel hub A and a wheel hub B, wheel hub A and wheel hub B being fixed together by a screw A, a tapered roller bearing being provided between the axle seat and the wheel hub, so that wheel hub A and wheel hub B rotate about the support shaft, a Mecanum wheel roller being provided between wheel hub A and wheel hub B, and wheel hub A being fixedly connected to a clutch device, which is the above-mentioned clutch device.

[0010] An oil seal is provided between the shaft seat and the wheel hub B to seal the cavity between the wheel hub and the support shaft; the connecting plate and the wheel hub A are fixed together by screws D; the end face of the support shaft is connected to the cover; a round nut is provided on the support shaft, and a brake gasket is provided between the round nut and the tapered roller bearing; an O-ring is provided between the wheel hub A and the clutch device; the support shaft and the cover are fixed together by screws B, the support shaft and the shaft seat are fixed together by screws C, and the wheel hub A and the clutch device are fixed together by screws D.

[0011] Compared to existing technologies, the present invention offers the following technical advantages: a simple, reliable structure and ease of use. To use, the clutch device simply inserts the clutch fixture into the two holes on the cam and rotates the fixture to move the retaining pin from the high position to the low position of the cam to open the clutch, and the reverse process closes the clutch. Manually opening and closing the clutch with this clutch device takes less time and is easy to operate, significantly improving the maintainability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a cross-sectional diagram of a Mecanum wheel.

[0013] Figure 2 It is a cross-sectional schematic diagram of the clutch device.

[0014] Figure 3 This is a three-dimensional diagram of a Mecanum wheel.

[0015] Figure 4 This is a schematic diagram of the key shaft and clutch base plate.

[0016] Figure 5 It is a schematic diagram of the cam and spline shaft. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments thereof.

[0018] like Figure 1 A Mecanum wheel includes a support shaft 5, an axle seat 6 is fixed outside the support shaft 5, a wheel hub is provided outside the axle seat 6, the wheel hub is divided into a wheel hub A1 and a wheel hub B2, wheel hub A1 and wheel hub B2 are fixed together by screws A3, a tapered roller bearing 4 is provided between the axle seat 6 and the wheel hub, so that the wheel hub A1 and wheel hub B2 rotate around the support shaft 5, a Mecanum wheel roller 9 is provided between the wheel hub A1 and the wheel hub B2, and the wheel hub A1 is fixedly connected to the clutch device 14.

[0019] An oil seal 8 is provided between the shaft seat 6 and the wheel hub B2 to seal the cavity between the wheel hub and the support shaft 5 so that the grease lubricating the bearing does not flow out.

[0020] In order to prevent grease from flowing into the hollow portion of the support shaft 5 , a cover 12 is connected to the end surface of the support shaft 5 .

[0021] In order to limit the bearing, a round nut 11 is provided on the support shaft 5 , and a brake pad 10 is provided between the round nut 11 and the tapered roller bearing 4 .

[0022] For sealing, an O-ring 15 is provided between the wheel hub A1 and the clutch device 14 .

[0023] For the sake of firmness, the support shaft 5 and the cover 12 are fixed together by screws B13, the support shaft 5 and the shaft seat 6 are fixed together by screws C7, and the wheel hub A1 and the clutch device 14 are fixed together by screws D16.

[0024] like Figure 2-5 The clutch device 14 includes a connecting plate 27, which is fixed to the wheel hub A1 by screws D16. The connecting plate 27 is fixed to the clutch base plate 17 by screws. The toothed disc of the clutch base plate 17 cooperates with the toothed disc of the spline shaft 18 to form a clutch braking surface.

[0025] The clutch device 14 is provided with a self-rotating cam 20. The cam 20 cannot move in the axial direction of the spline shaft 18. The cam 20 is sleeved on the outside of the outer end 181 of the spline shaft 18. A cam pin 21 is inserted into the outer end 181. The cam pin 21 is arranged along the radial direction of the spline shaft 18, and both ends thereof are exposed on the outside of the spline shaft 18. The cam pin 21 maintains contact with the outer end surface of the cam 20.

[0026] like Figure 5The outer end surface of the cam 20 is provided with four positioning grooves 203, which divide the outer end surface of the cam 20 into four parts: two running surfaces 201 and two base surfaces 202. The running surfaces 201 and the base surfaces 202 are staggered, and the running surface 201 is inclined in the circumferential direction. The positioning groove 203 located at the lower end of the running surface 201 is a low-position positioning groove, and the positioning groove 203 located at the higher end of the running surface 201 is a high-position positioning groove.

[0027] The connecting plate 27 is fixedly connected to the bearing pressure plate 23 by screws E29. A bearing 24 is provided between the connecting plate 27 and the sprocket 26. The bearing cover 25 is fixed to the sprocket 26 by screws F28.

[0028] The spline shaft 18 is connected to the bearing cover 25 through the spline. The bearing cover 25 is fixed to the end cover pressure plate 19 by screws G30. The end cover pressure plate 19 is embedded with a cam 20. In order to maintain the position of the spline shaft 18 stable and prevent the spline shaft 18 from moving back and forth, a compression spring 22 is disposed on the outer surface of the spline shaft 18 . The compression spring 22 is located between the toothed disc of the spline shaft 18 and the end cover pressure plate 19 .

[0029] To facilitate rotation, both base surfaces 202 are provided with rotation grooves 204 .

[0030] To facilitate positioning, the four positioning grooves 203 divide the outer end surface of the cam 20 into four equal parts.

[0031] like Figure 1-5 , its working principle is: S100, open the clutch S101. When using the clutch device to open the clutch, insert the wheel clutch tool 90 into the two rotating grooves 204 on the cam 20, and rotate the cam 20 90° clockwise. During the rotation of the cam 20, the spline shaft 18 and its cam pin 21 will not rotate, causing the cam pin 21 and the spline shaft 18 to rotate relative to each other. The cam pin 21 runs an angular displacement of the running surface 201 and moves from the low-position positioning groove to the high-position positioning groove, causing the spline shaft to be pulled outward by an axial displacement.

[0032] S102, after the spline shaft 18 is pulled out, the gear disc on the spline shaft 18 is no longer engaged with the gear disc of the clutch base plate 17 (see Figure 4 ).

[0033] S103. At this time, after the cam pin 21 falls into the positioning groove 203, it can prevent the cam 20 from rotating and maintain the stability of the cam 20 and the spline shaft 18. Therefore, the wheel clutch tooling 90 can be taken out.

[0034] S104. At this time, when the wheel rotates, the sprocket and the bearing slide relative to each other and no longer rotate, thereby achieving traction of the vehicle.

[0035] S200, close the clutch S201. When using the clutch device to open the clutch, insert the wheel clutch tool 90 into the two rotating grooves 204 on the cam 20, and rotate the cam 20 counterclockwise 90°. During the rotation of the cam 20, the spline shaft 18 and its cam pin 21 will not rotate, causing the cam pin 21 and the spline shaft 18 to rotate relative to each other. The cam pin 21 runs an angular displacement of the running surface 201 and moves from the high-position positioning groove to the low-position positioning groove, forcing the spline shaft to move inward an axial displacement.

[0036] S202, after the spline shaft 18 moves inward, the gear disc on the spline shaft 18 and the gear disc on the clutch base plate 17 are in meshing state (see Figure 4 ).

[0037] S203. At this time, after the cam pin 21 falls into the positioning groove 203, it can prevent the cam 20 from rotating and maintain the stability of the cam 20 and the spline shaft 18. Therefore, the wheel clutch tooling 90 can be taken out.

[0038] S204: At this time, when the chain drives the sprocket to rotate, the wheel rotates along with the sprocket, so that the vehicle moves.

[0039] Features of this application: S1. The Mecanum wheel is innovative. The sprocket-driven structure of the Mecanum wheel is simple and reliable, which can effectively reduce the lateral width of the wheel and drive equipment. It has a manual clutch device that can quickly switch on and off. In the event of electrical equipment failure, it can quickly tow the vehicle to a safe area.

[0040] S2. The clutch device is innovative, with a novel structure and simple operation. The spline shaft is pulled out and retracted by rotating the cam. When the spline shaft is pulled out, the toothed disc at one end of the spline shaft and the toothed disc on the clutch base plate disengage, and the clutch opens. At the same time, a spring is provided on the device to keep the spline shaft in a stressed state. After the cam pin falls into the positioning groove of the cam, it can be effectively locked to prevent the spline shaft from moving.

[0041] S3. This clutch device features a simple, reliable structure and is easy to use. To use, simply insert the clutch fixture into the two holes on the cam and rotate the fixture to move the retaining pin from the high position to the low position. This opens the clutch, and the reverse process closes the clutch. This clutch device minimizes manual operation time and is easy to operate, significantly improving the maintainability of the equipment.

[0042] S4. The technology of the present invention can quickly open the vehicle's Mecanum wheel clutch when electrical equipment fails, and can tow the vehicle to a safe area.

[0043] S5. The present invention creatively designs a Mecanum wheel clutch device that can quickly open the clutch to release the vehicle brakes and quickly close the clutch to drive the Mecanum wheel normally. The clutch device is reliable, easy to operate, and improves work efficiency.

[0044] For other contents, please refer to the prior art.

[0045] The above description is only the preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several changes and improvements without departing from the overall concept of the present invention, and these should also be regarded as the scope of protection of the present invention.

Claims

1. A clutch device, comprising a connecting plate (27), the connecting plate (27) being fixedly connected to a clutch base plate (17), the toothed disc of the clutch base plate (17) cooperating with the toothed disc of the spline shaft (18) to form a clutch braking surface, characterized in that: The clutch device (14) is provided with a self-rotating cam (20), the cam (20) cannot move in the axial direction of the spline shaft (18), the cam (20) is sleeved on the outside of the outer end (181) of the spline shaft (18), and a cam pin (21) is inserted into the outer end (181). The cam pin (21) is arranged along the radial direction of the spline shaft (18), and both ends thereof are exposed on the outside of the spline shaft (18). The cam pin (21) maintains contact with the outer end surface of the cam (20); The outer end surface of the cam (20) is provided with four positioning grooves (203), and the four positioning grooves (203) divide the outer end surface of the cam (200) into four parts: two running surfaces (201) and two base surfaces (202). The running surfaces (201) and the base surfaces (202) are staggered, and the running surface (201) is tilted in the circumferential direction. The positioning groove (203) located at the lower end of the running surface (201) is a low-position positioning groove, and the positioning groove (203) located at the higher end of the running surface (201) is a high-position positioning groove.

2. The clutch device according to claim 1, wherein: The connecting plate (27) is fixedly connected to the bearing pressure plate (23) by screws E (29), a bearing (24) is provided between the connecting plate (27) and the sprocket (26), and the bearing cover (25) is fixed to the sprocket (26) by screws F (28); the spline shaft (18) is key-connected with the bearing cover (25) by splines, and the bearing cover (25) is fixed to the end cover pressure plate (19) by screws G (30), and the end cover pressure plate (19) is embedded with a cam (20).

3. The clutch device according to claim 2, wherein: A compression spring (22) is provided on the outer surface of the spline shaft (18), and the compression spring (22) is located between the toothed disc of the spline shaft (18) and the end cover pressure plate (19).

4. The clutch device according to claim 3, wherein: The connecting plate (27) is fixedly connected to the clutch base plate (17) by screws; Both base surfaces (202) are provided with rotation grooves (204); The four positioning grooves (203) divide the outer end surface of the cam (20) into four equal parts.

5. A Mecanum wheel, comprising a support shaft (5), an axle seat (6) fixed outside the support shaft (5), a wheel hub provided outside the axle seat (6), the wheel hub being divided into a wheel hub A (1) and a wheel hub B (2), the wheel hub A (1) and the wheel hub B (2) being fixed together by screws A (3), a tapered roller bearing (4) being provided between the axle seat (6) and the wheel hub, so that the wheel hub A (1) and the wheel hub B (2) rotate around the support shaft (5), a Mecanum wheel roller (9) being provided between the wheel hub A (1) and the wheel hub B (2), the wheel hub A (1) being fixedly connected to a clutch device (14), characterized in that: The clutch device (14) is the clutch device according to claim 3.

6. The clutch device according to claim 5, characterized in that: An oil seal (8) is provided between the shaft seat (6) and the wheel hub B (2) to seal the cavity between the wheel hub and the support shaft (5); The connecting plate (27) is fixed to the hub A (1) by screws D (16); The end surface of the support shaft (5) is connected to the cover (12); A round nut (11) is provided on the support shaft (5), and a brake pad (10) is provided between the round nut (11) and the tapered roller bearing (4); An O-ring (15) is provided between the wheel hub A (1) and the clutch device (14); The support shaft (5) and the cover (12) are fixed together by screws B (13), the support shaft (5) and the shaft seat (6) are fixed together by screws C (7), and the hub A (1) and the clutch device (14) are fixed together by screws D (16).

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