Mecanum wheel device with electromagnetic clutch

Abstract

The utility model discloses a Mecanum wheel device with an electromagnetic clutch, which comprises a wheel seat, a plurality of single wheel bodies are uniformly distributed around the wheel seat, the center of the wheel seat is connected with a mounting seat, the mounting seat is connected with the wheel seat through a wheel seat bearing, a friction disc is arranged between the wheel seat bearing and the wheel seat, and an electromagnetic clutch structure is arranged between the friction disc and the mounting seat. The electromagnetic clutch structure comprises an electromagnetic clutch main shaft, a main shaft friction disc, an electromagnetic clutch armature, a main shaft bearing and a speed reducer output shaft. The electromagnetic clutch main shaft is reasonable and ingenious in structural design, the main shaft friction disc and the electromagnetic clutch armature are integrated on the electromagnetic clutch main shaft, the overall structure is simple, maintenance and replacement are convenient, separation and reunion between the main shaft friction disc and the friction disc are achieved through attraction force generated by electromagnetism, and the clutch efficiency is improved. Damage to the motor caused by back electromotive force generated by rapid rotation of the Mecanum wheel in the passive traction process is avoided, the electromagnetic mechanism is rapid in response and high in precision, and stable operation of the Mecanum wheel is guaranteed.

Description

Technical Field

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

[0002] A 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-driven 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 No. 201310148732.0 discloses an embedded clutch type Mecanum wheel, including 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 locking 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 No. 201310007048.0 discloses a belt wheel 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 separation mechanism, and also includes a torsion spring. The torsion spring is arranged on the separation lever seat, and the torsion rod of the torsion spring tightly presses on the other end of the separation lever, so that one end of the separation 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, with low reliability. 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 an electromagnetic clutch, which has a compact overall structure, is convenient for maintenance, and has high transmission efficiency.

[0006] To achieve this purpose, the structure adopted by the present utility model is as follows: A Mecanum wheel device with an electromagnetic clutch includes a wheel seat, and a plurality of single wheel bodies are evenly arranged around the wheel seat. An installation seat is connected to the wheel seat through a wheel seat bearing, a friction disc is arranged between the wheel seat and the wheel seat bearing, and an electromagnetic clutch structure is connected to the installation seat; the electromagnetic clutch structure includes an electromagnetic clutch main shaft, one end of the electromagnetic clutch main shaft is connected to a main shaft friction disc, the other end is connected to the output shaft of a reducer, the outer side of the electromagnetic clutch main shaft is connected to an electromagnetic clutch armature through a main shaft bearing, and the outer box of the electromagnetic clutch armature is fixed to the installation seat by bolts.

[0007] The electromagnetic clutch main shaft includes a connection disc, the connection disc is a disc structure, a shaft body connection column is arranged in the center of the connection disc, a spline hole is arranged at one end of the shaft body connection column, the spline hole is connected to the output shaft of the reducer, a plurality of card slots are arranged at the other end, the card slots are connected to the main shaft friction disc and fixed by bolts, and a ring-shaped limiting groove is arranged on one side of the connection disc facing the main shaft friction disc, and a curved surface spring is arranged in the ring-shaped limiting groove.

[0008] The main shaft friction disc includes a friction disc body, the friction disc body is a disc-shaped structure, a plurality of insertion plates are arranged in the center of one side of the friction disc body, the insertion plates are connected to the electromagnetic clutch main shaft and fixed by bolts, and an inner groove is arranged on the other side, and a plurality of reinforcing ribs are evenly arranged on the edge of the inner groove.

[0009] A spring gasket is arranged between the curved surface spring and the main shaft bearing.

[0010] Its beneficial effects are as follows:

[0011] 1. Avoiding the damage of the motor by back electromotive force. When the electromagnetic clutch structure is not working, there is no contact between the main shaft friction disc and the friction disc. Even if the Mecanum wheel rotates, it will not drive the motor to rotate, thus avoiding the damage of the back electromotive force to the motor.

[0012] 2. High-efficiency magnetic force transmission. By the magnetic force generated by energization, the electromagnetic clutch main shaft part is attracted to move, realizing the contact between the friction disc and the main shaft friction disc, thereby driving the rotation of the entire clutch. This design can ensure the high efficiency and stability of magnetic force transmission.

[0013] 3. Compact structure. The internal structure of the electromagnetic clutch is designed compactly, and each component is tightly connected by bolts and bearings, ensuring the overall firmness and reliability of the clutch.

[0014] 4. Convenient maintenance. Since standardized bolts and bearings are used for connection between components, disassembly and maintenance are relatively simple, facilitating regular inspection and replacement of parts, and extending the service life of the clutch.

[0015] 5. Precise control. By controlling the energization of the armature coil, the working state of the electromagnetic clutch structure can be precisely controlled, achieving precise control of the Mecanum wheel and being applicable to complex motion control scenarios.

[0016] 6. Reduced wear. During the operation of the clutch, through the reasonable cooperation of the friction disc and the electromagnetic clutch structure, direct friction between components is reduced, the wear rate is lowered, and thus the durability of the electromagnetic clutch structure is improved.

[0017] 7. Coaxial rotation design. Multiple components in the electromagnetic clutch structure achieve coaxial rotation through bearings. Such a design can reduce deviations and friction during rotation, improve the smoothness and efficiency of operation. At the same time, this design can also reduce energy loss and improve the overall transmission efficiency.

[0018] 8. Compared with traditional clutch mechanisms, the electromagnetic mechanism has higher reaction speed and accuracy. Brief Description of the Drawings

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

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

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

[0022] Figure 3 is the sectional view of the electromagnetic clutch structure;

[0023] Figure 4 is the sectional view of the electromagnetic clutch main shaft;

[0024] Figure 5 is the three-dimensional structure diagram of the front part of the main shaft friction disc;

[0025] Figure 6 is the three-dimensional structure diagram of the rear part of the main shaft friction disc.

[0026] In the figures: 1, single wheel body; 2, wheel seat; 3, mounting seat; 4, reducer output shaft; 5, electromagnetic clutch main shaft, 51, connection disc, 52, annular limiting groove, 53, shaft body connecting column, 54, card slot, 55, spline hole; 6, main shaft friction disc, 61, friction disc body, 62, insertion plate, 63, inner groove, 64, reinforcing rib; 7, main shaft bearing; 8, wheel seat bearing; 9, electromagnetic clutch armature; 10, curved spring; 11, friction disc. Specific Embodiments

[0027] The present utility model will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0028] In the description of the utility model, 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. It is only for the convenience of describing the present utility model 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, so it should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0029] In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 elements; the fixed connection can be welding or bonding. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] As Figure 1 、 Figure 2 shown, the Mecanum wheel device with electromagnetic clutch includes a wheel seat 2. A plurality of single wheel bodies 1 are evenly arranged around the wheel seat 2. Each single wheel body 1 is an olive-shaped rubber wheel structure, and both ends are connected to the connecting parts on the wheel seat 2 through bearings. The single wheel bodies 1 are arranged around the wheel seat 2 in an inclined state. An installation seat 3 is connected to the wheel seat 2 through a wheel seat bearing 8. The outer ring of the bearing of the wheel seat bearing 8 is connected to the installation seat 3 through bolts, and the inner ring of the bearing is connected to the wheel seat 2 through bolts. The center of the wheel seat 2 is a hollow structure, and a friction disk 11 is filled in the hollow structure. The edge of the friction disk 11 is fixed between the wheel seat 2 and the inner ring of the bearing of the wheel seat bearing 8 through bolts. An electromagnetic clutch structure is connected to the installation seat 3. As Figure 3As described above, the electromagnetic clutch structure includes an electromagnetic clutch main shaft 5. One end of the electromagnetic clutch main shaft 5 is connected to the main shaft friction disc 6, and the other end is connected to the reducer output shaft 4. The outer side of the electromagnetic clutch main shaft 5 is connected to the electromagnetic clutch armature 9 through the main shaft bearing 7. The electromagnetic clutch armature 9 is wrapped by an outer box, which is provided with an annular coil and an iron core wrapped by the annular coil, and is connected with a wire. One side of the outer box of the electromagnetic clutch armature 9 is fixed on the mounting seat by bolts, and the other side is connected to the outer ring of the bearing of the main shaft bearing 7.

[0031] As Figure 4 shown, the electromagnetic clutch main shaft 5 includes a connecting disc 51. The connecting disc 51 is of a disc structure. The connecting disc 51 covers one side of the mounting seat 3. A shaft body connecting column 53 is arranged in the center of the connecting disc 51. The shaft body connecting column 53 passes through the through hole arranged in the center of the mounting seat 3. The shaft body connecting column 53 is sleeved in the center of the inner ring of the main shaft bearing 7. One end of the shaft body connecting column 53 is provided with a spline hole 55. The spline hole 55 is connected to the reducer output shaft 4 through gear meshing. The other end is provided with a plurality of card slots 54. The card slots 54 are connected to the main shaft friction disc 6 and fixed by bolts. One side of the connecting disc 51 facing the main shaft friction disc 6 is provided with an annular limiting groove 52. A curved surface spring 10 is arranged in the annular limiting groove 52. A spring gasket is arranged between the curved surface spring 10 and the main shaft bearing 7.

[0032] As Figure 5 、 Figure 6 shown, the main shaft friction disc 6 includes a friction disc body 61. The friction disc body 61 is of a disc-shaped structure. A plurality of insertion plates 62 are arranged in the center of one side of the friction disc body 61. The insertion plates 62 are matched with the card slots 54 on the electromagnetic clutch main shaft 5. The periphery of the insertion plates 62 is connected and fixed to the shaft body connecting column 53 on the electromagnetic clutch main shaft 5 by bolts. The other side is provided with an inner groove 63. The inner groove 63 is a circular groove body. A plurality of reinforcing ribs 64 are uniformly arranged in a radial pattern at the edge of the inner groove 63.

[0033] There is no fixed connection between the reducer output shaft 4 and the electromagnetic clutch main shaft 5, and they are only connected through the spline hole 55. Therefore, the electromagnetic clutch main shaft 5 can move back and forth.

[0034] When the electromagnetic clutch armature 9 is not energized, no magnetic force is generated. The electromagnetic clutch main shaft 5 is stably matched with the curved surface spring 10 and the reducer output shaft. The main shaft friction disc 6 is not in contact with the friction disc 11. At this time, when the Mecanum wheel is pulled by the trailer, the wheel seat 2 rotates, and only the friction disc 11 rotates without driving the reducer output shaft 4 to rotate, so that no back electromotive force is generated on the motor, resulting in damage to the motor.

[0035] When the electromagnetic clutch armature 9 is energized, a magnetic force is generated to attract the electromagnetic clutch main shaft 5 to move, pressing the curved surface spring 10 and the spring gasket while driving the main shaft friction disc 6 to move towards the friction disc 11 until they are in full contact and a certain axial force is generated. At this time, due to the limiting effect of the curved surface spring 10 and the spring gasket, the electromagnetic clutch main shaft 5 and the electromagnetic clutch armature 9 are not fully fitted. When the output shaft 4 of the reducer rotates to drive the friction disc 11 to rotate, the rotation of the wheel seat 2 is driven by the frictional force between the friction disc 11 and the main shaft friction disc 6, realizing the rotation of the Mecanum wheel.

[0036] 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. A Mecanum wheel device with electromagnetic clutch, comprising a wheel seat (2), and a plurality of single wheel bodies (1) are evenly arranged around the wheel seat (2), characterized in that, An installation seat (3) is connected to the wheel seat (2) through a wheel seat bearing (8). A friction disc (11) is arranged between the wheel seat (2) and the wheel seat bearing (8). An electromagnetic clutch structure is connected to the installation seat (3). The electromagnetic clutch structure includes an electromagnetic clutch main shaft (5). One end of the electromagnetic clutch main shaft (5) is connected to a main shaft friction disc (6), and the other end is connected to a reducer output shaft (4). The outer side of the electromagnetic clutch main shaft (5) is connected to an electromagnetic clutch armature (9) through a main shaft bearing (7). The outer box of the electromagnetic clutch armature (9) is fixed to the installation seat (3) by bolts.

2. The Mecanum wheel device with electromagnetic clutch according to claim 1, characterized in that, The electromagnetic clutch main shaft (5) includes a connecting disc (51). The connecting disc (51) is of a disc structure. A shaft body connecting column (53) is arranged in the center of the connecting disc (51). A spline hole (55) is arranged at one end of the shaft body connecting column (53). The spline hole (55) is connected to the reducer output shaft (4). Multiple card slots (54) are arranged at the other end. The card slots (54) are connected to the main shaft friction disc (6) and fixed by bolts. An annular limiting groove (52) is arranged on one side of the connecting disc (51) facing the main shaft friction disc (6). A curved surface spring (10) is arranged in the annular limiting groove (52).

3. The Mecanum wheel device with electromagnetic clutch according to claim 1, characterized in that, The main shaft friction disc (6) includes a friction disc body (61). The friction disc body (61) is of a disc-shaped structure. A plurality of insertion plates (62) are arranged in the center of one side of the friction disc body (61). The insertion plates (62) are connected to the electromagnetic clutch main shaft (5) and fixed by bolts. An inner groove (63) is arranged on the other side. A plurality of reinforcing ribs (64) are evenly arranged on the edge of the inner groove (63).

4. The Mecanum wheel device with electromagnetic clutch according to claim 2, characterized in that, A spring gasket is arranged between the curved surface spring (10) and the main shaft bearing (7).

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