Damping structure for motor shaft of electric roller

Abstract

The utility model relates to the technical field of electric rollers, and discloses an electric roller motor shaft damping structure which comprises a roller body and a gear shaft, one side of the roller body is fixedly connected with a first end cover, the first end cover is rotatably connected with a first end shaft, the first end shaft penetrates through the end cover, one end of the first end shaft is provided with a first motor shell, and the other end of the first end shaft is provided with a second motor shell. A motor body is arranged on one side of the first motor shell, and a second motor shell is detachably connected to the circumferential outer wall of the motor body through bolts. According to the utility model, the elastic rubber ring is deformed in the gap between the clamping grooves on the output shaft of the motor body and the gear shaft, so that the vibration generated by the output shaft of the motor body is absorbed, and the position of the gear shaft can be limited, so that the rotating axis of the gear shaft is the same as the rotating axis of the output shaft of the motor body; and vibration generated in the operation process of the device is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rollers, and more particularly to a shock absorbing structure of a motor shaft of an electric roller. Background Art

[0002] The electric roller is an external drive device that can replace the widely used motor-reducer type. It is used to form a belt conveyor and can transport bulk materials such as coal, ore, sand, cement, flour, etc., as well as piece items such as sacks and equipment.

[0003] After searching, the Chinese patent with the announcement number CN221929504U discloses a shock-absorbing joint for the motor shaft of an electric drum. The device drives the motor shaft through the internal motor to drive the reduction gear set through the gear shaft to rotate the drum. The motor shaft and the gear shaft are generally connected by a single set of key pins and keyways. After long-term use, a gap will be generated between the two due to wear, which will easily cause vibration during driving and affect the normal operation of the device. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a shock-absorbing structure for a motor shaft of an electric drum to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: an electric drum motor shaft shock absorption structure, comprising a cylinder and a gear shaft, wherein one side of the cylinder is fixedly connected to a first end cover, the first end cover is rotatably connected to the first end shaft, and the first end shaft passes through the end cover, one end of the first end shaft is provided with a first motor housing, one side of the first motor housing is provided with a motor body, the circumferential outer wall of the motor body is detachably connected to the second motor housing by bolts, and the second motor housing is rotatably connected to the inner wall of the cylinder, the output shaft of the motor body is provided with two symmetrical key slots, one end of the gear shaft is provided with a card slot, and the circumferential inner wall of the card slot is fixedly connected to two symmetrical key pins, an elastic rubber ring is provided in the card slot, and the elastic rubber ring has the same shape as the inner wall of the card slot after the key pins are fixedly connected, and the inner wall of the elastic rubber ring is fixed to the outer wall of the motor body output shaft with the key slot, a reduction gear set is provided on the inner wall of the cylinder, and meshes with the gear shaft, the other end of the cylinder is fixedly connected to the second end cover, and the second end cover is rotatably connected to the second end shaft passing through the second end cover.

[0006] As a further solution of the present invention, a plurality of support rods in a ring array are fixedly connected to the circumferential inner wall of the second motor housing, one end of the plurality of support rods is fixedly connected to a ring, a bearing is fixedly connected to the circumferential inner wall of the ring, and the inner ring of the bearing is fixed to the circumferential outer wall of the gear shaft.

[0007] Furthermore, the inner wall of the outer ring of the bearing is coated with high molecular weight polystyrene, and the outer wall of the inner ring of the bearing is also coated with high molecular weight polystyrene.

[0008] As a further solution of the present invention, bearings identical to those described above are also provided between the first end cover and the first end shaft and between the second end cover and the second end shaft.

[0009] As a further solution of the present invention, the axis of the first end shaft and the axis of the second end shaft are on the same straight line.

[0010] As a further solution of the present invention, a rubber ring is bonded to the circumferential outer wall of the cylinder.

[0011] Technical effects and advantages of this utility model:

[0012] 1. The utility model is provided with an elastic rubber ring. When the output shaft of the motor body vibrates during operation, the elastic rubber ring deforms in the gap between the output shaft of the motor body and the groove on the gear shaft, thereby absorbing the vibration generated by the output shaft of the motor body and allowing the device to operate normally.

[0013] 2. The utility model limits the position of the gear shaft by providing a bearing when the output shaft of the motor body drives the gear shaft to rotate, so that the axis of rotation of the gear shaft is the same as the axis of rotation of the output shaft of the motor body, thereby increasing the stability of the gear shaft rotation and further reducing the vibration generated during the operation of the device.

[0014] 3. The utility model coats high molecular weight polystyrene on the inner wall of the bearing outer ring and the outer wall of the inner ring. When the gear shaft vibrates during operation of the device, the high molecular weight polystyrene converts the generated vibration into complex molecular friction, and then converts the mechanical energy into heat energy, thereby achieving a damping effect and thus reducing shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the internal explosion structure of the utility model.

[0017] Figure 3 It is a partially enlarged structural schematic diagram of the present invention.

[0018] Figure 4 This is a schematic diagram of the partial explosion structure of the utility model.

[0019] Figure 5 It is a partially enlarged structural schematic diagram of the present invention.

[0020] The figures are marked as follows: 1. cylinder; 2. first end cover; 3. second end cover; 5. first end shaft; 6. second end shaft; 7. first motor housing; 8. second motor housing; 9. gear shaft; 10. reduction gear set; 11. motor body; 12. support rod; 13. ring; 14. bearing; 15. keyway; 16. slot; 17. key pin; 18. elastic rubber ring. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely examples. The present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Reference Figure 1-Figure 5 The utility model provides a shock-absorbing structure of an electric drum motor shaft, including a cylinder 1 and a gear shaft 9. One side of the cylinder 1 is fixedly connected to a first end cover 2 by bolts. The first end cover 2 is rotatably connected to a first end shaft 5, and the first end shaft 5 passes through the end cover. One end of the first end shaft 5 is provided with a first motor housing 7, and one side of the first motor housing 7 is provided with a motor body 11. The outer circumferential wall of the motor body 11 is detachably connected to a second motor housing 8 by bolts, and the second motor housing 8 is rotatably connected to the inner wall of the cylinder 1. The output shaft of the motor body 11 is provided with two symmetrical key slots 15, and one end of the gear shaft 9 is provided with a card slot 16. Two symmetrical key pins 17 are welded on the inner circumferential wall of the card slot 16, and an elastic rubber ring 18 is provided in the card slot 16. , and the elastic rubber ring 18 has the same appearance as the inner wall of the card slot 16 after welding the key pin 17, and the inner wall of the elastic rubber ring 18 is fixed to the outer wall of the output shaft of the motor body 11 with the key slot 15. A reduction gear set 10 is provided on the inner wall of the cylinder 1 and is engaged with the gear shaft 9. The other end of the cylinder 1 is fixedly connected to the second end cover 3 by bolts, and the second end cover 3 is rotatably connected to the second end shaft 6 that passes through the second end cover 3. Through the provided elastic rubber ring 18, if the output shaft vibrates during the operation of the motor body 11, the elastic rubber ring 18 is deformed in the gap between the output shaft of the motor body 11 and the card slot 16 on the gear shaft 9, thereby absorbing the vibration generated by the output shaft of the motor body 11, thereby allowing the device to operate normally.

[0023] In the present invention, a plurality of support rods 12 in a circular array are welded on the circumferential inner wall of the second motor housing 8, a circular ring 13 is welded at one end of the plurality of support rods 12, a bearing 14 is welded on the circumferential inner wall of the circular ring 13, and the inner ring of the bearing 14 is fixed to the circumferential outer wall of the gear shaft 9. When the output shaft of the motor body 11 drives the gear shaft 9 to rotate, the position of the gear shaft 9 is limited by the bearing 14, so that the axis of rotation of the gear shaft 9 is the same as the axis of rotation of the output shaft of the motor body 11, thereby increasing the stability of the rotation of the gear shaft 9 and further reducing the vibration generated during the operation of the device.

[0024] It should be noted that the inner wall of the outer ring of the bearing 14 is coated with polymer polystyrene, and the outer wall of the inner ring of the bearing 14 is also coated with polymer polystyrene. By coating the inner wall of the outer ring and the outer wall of the inner ring of the bearing 14 with polymer polystyrene, if the gear shaft 9 vibrates during operation of the device, the polymer polystyrene will convert the generated vibration into complex molecular friction, and then convert the mechanical energy into thermal energy, achieving a damping effect, thereby performing shock absorption. The same bearings 14 as those described above are also provided between the first end cover 2 and the first end shaft 5 and between the second end cover 3 and the second end shaft 6, which increases the stability of the rotation between the first end cover 2 and the first end shaft 5 and between the second end cover 3 and the second end shaft 6, further reducing the vibration generated by the device itself. The axis of the first end shaft 5 and the axis of the second end shaft 6 are on the same straight line, and a rubber ring is bonded to the circumferential outer wall of the cylinder 1.

[0025] The working principle of the present invention is as follows: when the output shaft of the motor body 11 vibrates during operation, the elastic rubber ring 18 is deformed in the gap between the output shaft of the motor body 11 and the slot 16 on the gear shaft 9, thereby absorbing the vibration generated by the output shaft of the motor body 11, thereby allowing the device to operate normally. Furthermore, when the output shaft of the motor body 11 drives the gear shaft 9 to rotate, the position of the gear shaft 9 is limited by the bearing 14 provided, so that the axis of rotation of the gear shaft 9 is the same as the axis of rotation of the output shaft of the motor body 11, thereby increasing the stability of the rotation of the gear shaft 9 and further reducing the vibration generated during the operation of the device.

[0026] Finally, a few points should be noted: In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0027] In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A motor shaft damping structure for an electric drum, comprising a cylinder (1) and a gear shaft (9), wherein a first end cover (2) is fixedly connected to one side of the cylinder (1), a first end shaft (5) is rotatably connected to the first end cover (2), and the first end shaft (5) passes through the end cover, a first motor housing (7) is provided at one end of the first end shaft (5), and a motor body (11) is provided at one side of the first motor housing (7), characterized in that: The motor body (11) is detachably connected to a second motor housing (8) on its circumferential outer wall by bolts, and the second motor housing (8) is rotatably connected to the inner wall of the cylinder (1). The output shaft of the motor body (11) is provided with two symmetrical key slots (15). One end of the gear shaft (9) is provided with a slot (16). Two symmetrical key pins (17) are fixedly connected to the circumferential inner wall of the slot (16). An elastic rubber ring (18) is provided in the slot (16), and the elastic rubber ring (18) is provided in the slot (16). The ring (18) has the same outer shape as the inner wall of the slot (16) after the key pin (17) is fixedly connected, and the inner wall of the elastic rubber ring (18) is fixed to the outer wall of the output shaft of the motor body (11) on which the key slot (15) is opened. A reduction gear set (10) is provided on the inner wall of the cylinder (1) and is meshed with the gear shaft (9). The other end of the cylinder (1) is fixedly connected to a second end cover (3), and the second end cover (3) is rotatably connected to a second end shaft (6) that passes through the second end cover (3).

2. The electric drum motor shaft vibration damping structure according to claim 1, characterized in that: A plurality of support rods (12) in a ring array are fixedly connected to the circumferential inner wall of the second motor housing (8), one end of each of the plurality of support rods (12) is fixedly connected to a ring (13), a bearing (14) is fixedly connected to the circumferential inner wall of the ring (13), and the inner ring of the bearing (14) is fixed to the circumferential outer wall of the gear shaft (9).

3. The electric drum motor shaft vibration damping structure according to claim 2, characterized in that: The inner wall of the outer ring of the bearing (14) is coated with high molecular weight polystyrene, and the outer wall of the inner ring of the bearing (14) is also coated with high molecular weight polystyrene.

4. The electric drum motor shaft vibration damping structure according to claim 1, characterized in that: The same bearings (14) as those described above are also provided between the first end cover (2) and the first end shaft (5) and between the second end cover (3) and the second end shaft (6).

5. The electric drum motor shaft vibration damping structure according to claim 4, characterized in that: The axis of the first end shaft (5) and the axis of the second end shaft (6) are on the same straight line.

6. The electric drum motor shaft vibration damping structure according to claim 1, characterized in that: A rubber ring is bonded to the circumferential outer wall of the cylinder (1).

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