Mecanum wheel device with clutch structure

Abstract

The utility model discloses a Mecanum wheel device with a clutch structure, which comprises a wheel seat, a plurality of single wheel bodies are uniformly distributed on the periphery of the wheel seat, a mounting seat is arranged at the front end of the wheel seat, the mounting seat is connected with the wheel seat through a bearing, the clutch structure is arranged between the mounting seat and the wheel seat, and a limiting structure is arranged on the mounting seat. And the limiting structure controls the clutch of the clutch structure. The clutch is reasonable and ingenious in structural design, compact in structure, high in integration level, capable of reducing the overall weight, flexible in clutch switching, large in friction plate stress area, capable of rapidly digesting transmission torque during starting, high in transmission stability and capable of guaranteeing operation stability.

Description

Technical Field

[0001] The utility model relates to a Mecanum wheel device with a clutch structure. Background Art

[0002] The Mecanum wheel is a wheel structure that can achieve omnidirectional movement. It moves at a low speed under the drive of a motor. When running over a long distance, the equipment equipped with Mecanum wheels needs to be towed by a high-speed vehicle to move at a high speed. As a result, the reverse driving motor of the Mecanum wheel will generate an electromotive force that can damage the motor. It can only be quickly transported by vehicle-mounted or wheel-changing methods. If an immediate device is set between the Mecanum wheel and the motor, the separation between the Mecanum wheel and the motor can be achieved. When wanting to quickly transport, just disconnect the clutch, and the rotation of the Mecanum wheel will not affect the motor, thus realizing quick transportation.

[0003] Chinese Patent with application number 201310148732.0 discloses an embedded clutch type Mecanum wheel, which includes a Mecanum wheel body, a spline shaft with clutch claws on the end face, a pair of angular contact ball bearings, a bearing sleeve, an adjusting gasket, a round nut stop washer, a round nut, a spline clutch disc with clutch claws on the end face, a connecting rod connecting the clutch disc and the wheel hub, a spring, bolts, screws, and gaskets. Although this structure can achieve the clutch between the Mecanum wheel and the motor, its transmission force-bearing area is only the spline surface of the clutch claws, and it cannot quickly digest the transmission torque during startup. Moreover, the overall thickness is relatively thick and the overall weight is relatively large.

[0004] Chinese Patent with application number 201310007048.0 discloses a belt wheel type clutch, which includes a belt wheel, a rear cover, a left friction plate assembly, a right friction plate assembly, a middle pressure plate, a pressure plate, a spring and a separating mechanism. It also includes a torsion spring, which is arranged on the separating lever seat, and the torsion bar of the torsion spring presses tightly on the other end of the separating lever, so that one end of the separating lever closely adheres to the other end of the pull rod; the left friction plate assembly includes a friction plate, a clip, a driven disc, a damping disc, a damping spring, a disc hub and a damping washer. The friction plate is arranged on the clip, the clip is arranged on the driven disc, the driven disc and the damping disc are fixedly connected through a limit pin, the disc hub is installed between the central holes of the driven disc and the damping disc, the damping spring is arranged between the window holes provided on the driven disc and the damping disc, and the damping spring is located in the through hole provided on the disc hub. The damping washers are loaded on both sides of the disc hub, and a spline hole is provided in the center of the disc hub. The structure of the right friction plate assembly is the same as that of the left friction plate assembly, and the spring is a disc spring. This structure is only controlled by a torsion spring, and the reliability is not high. Moreover, the excessive number of male spring groups will cause slow response and slow vehicle startup. Content of the Utility Model

[0005] In order to overcome the above deficiencies, the present utility model provides a Mecanum wheel device with a clutch structure, which has a compact structure, high reliability, and can quickly realize the clutch between the Mecanum wheel and the motor.

[0006] To achieve this purpose, the structure adopted by the present utility model is as follows: A Mecanum wheel device with a clutch structure includes a wheel seat, on which a plurality of single wheel bodies are arranged. At the front of the wheel seat, there is an installation seat, and the installation seat is connected to the wheel seat through a bearing. The outer ring of the bearing is connected to the installation seat, and the inner ring of the bearing is connected to the wheel seat. A clutch structure is arranged between the wheel seat and the installation seat, and a friction disc is arranged between the clutch structure and the wheel seat. The center of the clutch structure is connected to the output shaft of the reducer, and a limiting structure is arranged on the output shaft of the reducer to control the clutch between the clutch structure and the friction disc; the clutch structure includes a clutch friction disc group, on one side of the clutch friction disc group there is a friction disc, on the other side there is a clamping friction plate, and a diaphragm spring is arranged on the clamping friction plate. It is connected to the installation seat by a limit fixing piece, and the diaphragm spring, the clamping friction plate and the clutch friction disc group are pressed inside the installation seat. The limiting structure contacts the diaphragm spring through a limiting bearing.

[0007] The clutch friction disc group includes an annular structural piece, and two groups of friction plates are symmetrically arranged on both sides of the structural piece. One side of the friction plate contacts the friction disc, and the other side of the friction plate contacts the clamping friction plate. A buffer spring rotating shaft is connected to the center of the structural piece, and a plurality of buffer springs are evenly arranged on the buffer spring rotating shaft. Buffer spring limit pieces are arranged on both sides of the buffer spring rotating shaft to clamp the buffer springs. The buffer spring limit pieces are fixed to the buffer spring rotating shaft by fixing glue nails. The center of the buffer spring rotating shaft is connected to the output shaft of the reducer through a spline tube.

[0008] An axial center fixing clip is arranged between the buffer spring limit piece and the spline tube; a diaphragm buffer spring is arranged between the structural piece and the buffer spring rotating shaft.

[0009] The limiting structure includes a slider bearing cylinder, which is sleeved on the output shaft of the reducer. A slider limit block is connected to the outside of the slider bearing cylinder, and the slider limit block is connected to the installation seat through a limit support rod.

[0010] The diaphragm spring includes a spring ring, and spring pieces are arranged in a conical shape on the spring ring. The connection part between the spring ring and the spring pieces is in a V-shaped depression, and the end of the spring piece contacts the limiting bearing.

[0011] The limit fixing piece is a metal sheet structure, with a notch in the center, and a plurality of bending blocks are arranged on the edge of the notch, and the bending blocks are bent towards the diaphragm spring group.

[0012] The clamping friction plate is of an annular structure, and a plurality of first bosses are arranged in a ring shape on the clamping friction plate. The first bosses are in a stepped structure that gradually becomes shorter towards the center of the clamping friction plate, and a second boss is arranged near the inner ring of the clamping friction plate on each first boss.

[0013] Its beneficial effects are as follows:

[0014] 1. The structure is compact and has a high degree of integration. This design structures the part for the clutch into a disc-shaped structure that can increase the friction area, which can reduce the overall thickness, and each component fits tightly, improving the overall integration degree. Such a design can achieve more functions within a limited space and is suitable for application scenarios that require efficient use of space.

[0015] 2. The friction plate has high stability. The friction plate of the clutch structure is connected through multiple fixed points, ensuring its stability and reliability during operation. Such a design can reduce the loosening and displacement of the friction plate, improving the durability and service life of the clutch.

[0016] 3. Buffer spring design. The clutch structure design includes a buffer spring. Through the action of the buffer spring, additional buffer force can be provided during startup and shutdown, reducing the impact and wear on other components. This design not only extends the life of the clutch structure but also improves the smoothness of startup and shutdown.

[0017] 4. Coaxial rotation design. Multiple components in the clutch structure achieve coaxial rotation through bearings and limiters. Such a design can reduce the deviation and friction during rotation, improving the smoothness and efficiency of operation. At the same time, this design can also reduce energy loss and improve the overall transmission efficiency.

[0018] 5. Reliability of clutch connection and disconnection. Through the combined design of the diaphragm spring, limiting structure, and clutch friction disc group, the reliability of the clutch structure during connection and disconnection is ensured. The limiting structure can, through precise control, ensure that the clutch structure can fit tightly when connection is required and can quickly separate when disconnection is required, avoiding unnecessary energy consumption and friction. Description of the Drawings

[0019] The present utility model will be described by way of examples with reference to the drawings, where:

[0020] Figure 1 is the three-dimensional structure diagram of the present utility model;

[0021] Figure 2 is the sectional structure diagram of the present utility model;

[0022] Figure 3 is the sectional structure diagram of the said clutch structure;

[0023] Figure 4 It is a three-dimensional structure diagram of the clutch friction disc group;

[0024] Figure 5 It is a cross-sectional view of the clutch friction disc group;

[0025] Figure 6 It is a schematic structural diagram of the diaphragm spring;

[0026] Figure 7 It is a schematic structural diagram of the limit fixing piece;

[0027] Figure 8 It is a schematic structural diagram of the clamping friction plate.

[0028] In the figure: 1. Single wheel body, 2. Wheel seat, 3. Reducer output shaft, 4. Limit fixing piece, 5. Clutch friction disc group, 51. Structural piece, 52. Friction disc, 53. Buffer spring rotating shaft, 54. Buffer spring limit piece, 55. Fixed fixing glue nail, 56. Buffer spring, 57. Axle hole, 58. Axle center fixing clip, 59. Diaphragm buffer spring, 6. Diaphragm spring, 61. Spring ring, 62. Spring piece, 7. Clamping friction plate, 71. First boss, 72. Second boss, 8. Diaphragm spring slider bearing column, 9. Diaphragm spring slider limit block, 10. Limiter support rod, 11. Friction disc, 12. Bearing outer ring, 13. Bearing inner ring, 14. Mounting seat, 15. Limit bearing. Specific embodiments

[0029] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0031] In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "equipped with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components; a fixed connection can be welding or bonding. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0032] As Figure 1 , Figure 2 shown, the Mecanum wheel device with a clutch structure includes a wheel seat 2, on which a plurality of single wheel bodies 1 are arranged. Each single wheel 1 is of an olive-shaped rubber wheel structure. Both ends of the single wheel 1 are connected to the wheel seat 2 through bearings and bearing seats. The single wheel 1 is inclined and evenly arranged around the wheel seat 2. A mounting seat 14 is provided at the front of the wheel seat 2. A notch is provided in the center of the mounting seat 14, and a plurality of reserved holes around it are used to connect to the vehicle frame. The mounting seat 14 is connected to the wheel seat 2 through a bearing. The outer ring 12 of the bearing is connected to the mounting seat 14, and the inner ring 13 of the bearing is connected to the wheel seat 2. A clutch structure is provided between the wheel seat 2 and the mounting seat 14. A friction disc 11 is provided between the clutch structure and the wheel seat 2. The friction disc 11 and the peripheral inner ring 13 are fixed on the wheel seat 2 by bolts. The central part of the clutch structure is connected to the output shaft 3 of the reducer. A limiting structure is provided on the output shaft 3 of the reducer, and the limiting structure controls the engagement and disengagement between the clutch structure and the friction disc 11. As Figure 3 shown, the clutch structure includes a clutch friction disc group 5. A friction disc 11 is provided on one side of the clutch friction disc group 5, and a clamping friction plate 7 is provided on the other side. A diaphragm spring 6 is provided on the clamping friction plate 7 and is connected to the mounting seat 14 by a limiting fixing piece 4, pressing the diaphragm spring 6, the clamping friction plate 7 and the clutch friction disc group 5 inside the mounting seat 14. The limiting structure contacts the diaphragm spring 6 through a limiting bearing 15.

[0033] As Figure 4 , Figure 5As shown in the figure, the clutch friction disc group 5 includes an annular structural piece 51. On both sides of the structural piece 51, two groups of friction discs 52 are symmetrically arranged. On each side, the friction discs 52 are arranged in a ring on the surface of the structural piece 51 and are fixed by adhesive nails. One side of the friction discs 52 is in contact with the friction disc 11, and the other side of the friction discs 52 is in contact with the clamping friction disc 7. A buffer spring rotating shaft 53 is connected to the center of the structural piece 51. A plurality of buffer springs 56 are evenly arranged on the buffer spring rotating shaft 53. Buffer spring limit pieces 54 are arranged on both sides of the buffer spring rotating shaft 53 to clamp the buffer springs 56. The buffer spring limit pieces 54 are fixed to the buffer spring rotating shaft 53 by fixing adhesive nails 55. The center of the buffer spring rotating shaft 53 is connected to the reducer output shaft 3 through a spline tube 57.

[0034] An axial center fixing clip 58 is arranged between the buffer spring limit piece 54 and the spline tube 57; a diaphragm buffer spring 59 is arranged between the structural piece 51 and the buffer spring rotating shaft 53.

[0035] The limiting structure includes a slider bearing cylinder 8. The slider bearing cylinder 8 is sleeved on the reducer output shaft 3. A slider limit block 9 is connected to the outside of the slider bearing cylinder 8. The slider limit block 9 is connected to the mounting seat 14 through a limiter support rod 10. The slider limit block 9 and the limiter support rod 10 form a steel structure. By pushing and pulling the slider limit block 9, the movement of the slider bearing cylinder 8 on the reducer output shaft 3 is realized.

[0036] As Figure 6 shown in the figure, the diaphragm spring 6 includes a spring ring 61. Spring pieces 62 are arranged in a conical shape on the spring ring 61. The connection between the spring ring 61 and the spring pieces 62 is in a V-shaped depression. The end of the spring piece 62 is in contact with the limit bearing 15.

[0037] As Figure 7 shown in the figure, the limit fixing piece 4 is a metal sheet structure. A notch is arranged in the center. A plurality of bending blocks 41 are arranged on the edge of the notch. The bending blocks 41 are bent towards the diaphragm spring 6 group. The edge of the fiber fixing piece 4 is fixed to the mounting seat 14 by bolts.

[0038] As Figure 8 shown in the figure, the clamping friction disc 7 is an annular structure. A plurality of first convex platforms 71 are arranged in a ring on the clamping friction disc 7. The first convex platforms 71 are in a stepped structure that gradually becomes shorter towards the center of the clamping friction disc 7. A second convex platform 72 is arranged near the inner ring of the clamping friction disc 7 on each first convex platform 71. The spring ring 61 of the diaphragm spring 6 is placed on the first convex platform 71, and its V-shaped depression relies on the stepped structure of the first convex platform 71. The second convex platform 72 is arranged in the gap between adjacent spring pieces 62. The bending blocks 41 on the limit fixing piece 4 are in contact with the second convex platform 72.

[0039] When the slider limit block 9 remains in the middle position, the inner ring of the limit bearing 15 just contacts the spring piece 62 of the diaphragm spring 6, but does not generate an excessive axial force to deform the spring piece 62. At this time, the friction plate 52 on the side of the structural plate 51 close to the friction disc 11 still maintains a certain distance from the friction disc 11. When the Mecanum wheel is dragged, the rotation of the wheel seat 2 only drives the rotation of the friction disc 11, but does not drive the rotation of the reducer output shaft 3, so that the back electromotive force is not generated on the motor connected to the Mecanum wheel, avoiding damage to the motor.

[0040] When one end of the slider limit block 9 is pulled, it drives the slider bearing cylinder 8 to move towards the clutch structure. The inner ring of the limit bearing 15 contacts the diaphragm spring 6. As the axial force increases, the spring piece 62 deforms and evenly applies pressure to the surface of the clamping friction plate 7 to make it move towards the structural plate 51. As the clamping friction plate 7 is in full contact with the structural plate 51 and drives the entire clutch friction disc group 5 to move towards the friction disc 11 until they are fully fitted, and there is a certain amount of deformation and axial force. At this time, the Mecanum wheel motor drives the reducer output shaft 3 to rotate. As the internal spline of the spline tube 57 meshes with each other, the buffer spring rotating shaft 53 rotates. At the same time, the diaphragm buffer spring 56 will generate a certain amount of compression because it is stuck by the buffer spring rotating shaft 21 and the buffer spring limit piece 54, acting as a buffer for starting. As the compression expands, it drives the buffer spring limit piece 54 and also drives the structural plate 51 and the pressed friction disc 11 to rotate by relying on the fixed glue nails 55, making the Mecanum wheel rotate. At this time, the diaphragm spring 6 is pressed by the inner ring of the limit bearing 15, and the limit spring 15 plays a role, not driving the rotation of the slider bearing cylinder 8, thus playing the role of a clutch.

[0041] Based on the inspiration of the present utility model, through the above description, relevant staff can completely make various changes and modifications within the scope not deviating from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. Mecanum wheel device with a clutch structure, including a wheel seat (2), and a plurality of single wheel bodies (1) are arranged on the wheel seat (2), characterized in that, A mounting seat (14) is provided at the front of the wheel seat (2). The mounting seat (14) is connected to the wheel seat (2) through a bearing. The outer ring (12) of the bearing is connected to the mounting seat (14), and the inner ring (13) of the bearing is connected to the wheel seat (2). A clutch structure is provided between the wheel seat (2) and the mounting seat (14). A friction disc (11) is provided between the clutch structure and the wheel seat (2). The center of the clutch structure is connected to the output shaft (3) of the reducer. A limiting structure is provided on the output shaft (3) of the reducer, and the limiting structure controls the engagement and disengagement of the clutch structure and the friction disc (11). The clutch structure includes a clutch friction disc group (5). A friction disc (11) is provided on one side of the clutch friction disc group (5), and a clamping friction plate (7) is provided on the other side. A diaphragm spring (6) is provided on the clamping friction plate (7). The diaphragm spring (6), the clamping friction plate (7), and the clutch friction disc group (5) are pressed into the mounting seat (14) by using a limiting fixing piece (4) to connect with the mounting seat (14). The limiting structure contacts the diaphragm spring (6) through a limiting bearing (15).

2. The Mecanum wheel device with a clutch structure according to claim 1, characterized in that The clutch friction disc group (5) includes an annular structural piece (51). Two groups of friction pieces (52) are symmetrically provided on both sides of the structural piece (51). One side of the friction piece (52) contacts the friction disc (11), and the other side of the friction piece (52) contacts the clamping friction plate (7). A buffer spring rotating shaft (53) is connected to the center of the structural piece (51). A plurality of buffer springs (56) are evenly arranged on the buffer spring rotating shaft (53). Buffer spring limiting pieces (54) are provided on both sides of the buffer spring rotating shaft (53) to clamp the buffer springs (56). The buffer spring limiting pieces (54) are fixed to the buffer spring rotating shaft (53) through fixing glue nails (55). The center of the buffer spring rotating shaft (53) is connected to the output shaft (3) of the reducer through a spline tube (57).

3. The Mecanum wheel device with a clutch structure according to claim 2, characterized in that, An axial center fixing clip (58) is provided between the buffer spring limiting piece (54) and the spline tube (57); a diaphragm buffer spring (59) is provided between the structural piece (51) and the buffer spring rotating shaft (53).

4. The Mecanum wheel device with a clutch structure according to claim 1, characterized in that, The limiting structure includes a slider bearing cylinder (8). The slider bearing cylinder (8) is sleeved on the output shaft (3) of the reducer. A slider limiting block (9) is connected to the outside of the slider bearing cylinder (8). The slider limiting block (9) is connected to the mounting seat (14) through a limiter support rod (10).

5. The Mecanum wheel device with a clutch structure according to claim 1, characterized in that, The diaphragm spring (6) includes a spring ring (61). Spring pieces (62) are arranged in a conical shape on the spring ring (61). The connection part between the spring ring (61) and the spring pieces (62) is in a V-shaped depression. The end of the spring piece (62) contacts the limiting bearing (15).

6. The Mecanum wheel device with a clutch structure according to claim 1, characterized in that, The limiting fixing piece (4) is a metal sheet structure. A notch is provided in the center. A plurality of bending blocks (41) are provided on the edge of the notch. The bending blocks (41) are bent towards the diaphragm spring (6) group.

7. The Mecanum wheel device with a clutch structure according to claim 1, characterized in that, The clamping friction plate (7) is of an annular structure. A plurality of first bosses (71) are arranged in a ring shape on the clamping friction plate (7). The first bosses (71) are of a stepped structure that gradually becomes shorter towards the center of the clamping friction plate (7). A second boss (72) is arranged near the inner ring of the clamping friction plate (7) on each first boss (71).

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