CN213093976U

CN213093976U - Axial clearance adjusting device of direct current torque motor

Info

Publication number: CN213093976U
Application number: CN202022145574.1U
Authority: CN
Inventors: 郭国鸿; 李利; 陈丽云; 吴国楠; 陈金国; 谢金成
Original assignee: Beijing Yongguang Gaote Micro Motor Co ltd
Current assignee: Beijing Yongguang Gaote Micro Motor Co ltd
Priority date: 2020-09-26
Filing date: 2020-09-26
Publication date: 2021-04-30
Anticipated expiration: 2030-09-26

Abstract

The application relates to a direct current torque motor axial clearance adjusting device relates to the field of motor, including dismantling the regulation section of thick bamboo of connection on the end cover, adjust the cover establish on the output shaft of motor and with the end cover threaded connection of motor, adjust a section of thick bamboo one end and motor inner bearing and be close to the outer lane butt of end cover one end, the one end that the bearing was kept away from to the regulation section of thick bamboo is exposed to the external world. This application has and just can realize adjusting the motor axial volume of scurrying under the condition that need not dismantle the motor, adjusts more convenient effect.

Description

Axial clearance adjusting device of direct current torque motor

Technical Field

The application relates to the field of motors, in particular to a direct-current torque motor axial clearance adjusting device.

Background

An electric machine is an electromagnetic mechanical device that converts electrical energy into mechanical energy for driving machines and devices for various purposes.

Referring to fig. 1, a dc torque motor commonly used at present mainly includes two end caps 12, a stator 11 fixedly connected between the two end caps 12, and an output shaft 13 rotatably connected between the two end caps 12, one end of the output shaft 13 extends out of the end caps 12 and is connected with an external device for driving the external device to rotate, a rotor 14 is sleeved on a portion of the output shaft 13 located inside the stator 11, the rotor 14 is connected with the output shaft 13 through a flat key 16 to drive the output shaft 13 to rotate together, two bearings 15 are further sleeved on a portion of the output shaft 13 located inside the stator 11, the two bearings 15 are respectively located at two ends of the output shaft 13 and located between the two end caps 12 and the output shaft 13, the bearings 15 are in interference fit with the end caps 12 and the output shaft 13, and friction force between the end caps 12. However, when the motor is used, axial displacement of the motor is increased due to self-alignment adjustment of the magnetic center lines of the stator and the rotor of the motor and the like, and the phenomena of the service life of the motor, noise, vibration and the like are influenced.

At present, the axial displacement of the motor is mainly adjusted by adding or subtracting a gasket between one end of a bearing far away from a rotor and the inner side of an end cover to change the displacement, and the motor needs to be dismounted and mounted back and forth more trouble.

SUMMERY OF THE UTILITY MODEL

Need dismouting motor, troublesome poeration's problem when adjusting in order to reduce the volume of scurrying to the motor axial, this application provides a direct current torque motor axial clearance adjusting device.

The application provides a direct current torque motor axial clearance adjusting device adopts following technical scheme:

the utility model provides a direct current torque motor axial clearance adjusting device, is including dismantling the regulation section of thick bamboo of connection on the end cover, adjust the barrel casing establish on the output shaft of motor and with the end cover threaded connection of motor, adjust a section of thick bamboo one end and the outer lane butt that the bearing is close to end cover one end in the motor, the one end that the bearing was kept away from to the regulation section of thick bamboo exposes to the external world.

Through adopting above-mentioned technical scheme, establish on the motor output shaft and threaded connection on the end cover of motor through adjusting a section of thick bamboo cover, make and adjust a section of thick bamboo towards the inside one end butt of motor on the outer lane of motor inner bearing, just can be with fixing the position of bearing through adjusting a section of thick bamboo, avoid the bearing to produce too big axial volume of scurrying, when the axial volume of needs adjusting motor is scurried, the staff directly revolves to twist externally and adjusts a section of thick bamboo and just can change the clearance between a section of thick bamboo and the bearing, thereby realize the purpose of adjusting motor's axis volume of scurrying, need not to dismantle the motor, the operation is very simple and convenient.

Preferably, the inner diameter of the adjusting cylinder is larger than the outer diameter of the bearing inner ring.

By adopting the technical scheme, the end part of the adjusting cylinder can be directly abutted against the outer ring of the bearing without influencing the normal rotation of the inner ring of the bearing.

Preferably, the inner diameter of the adjusting cylinder is smaller than the outer diameter of the bearing inner ring, one end of the adjusting cylinder close to the bearing is provided with an avoiding groove for avoiding the contact of the adjusting cylinder and the bearing inner ring, and the avoiding groove is communicated with the inner hole of the adjusting cylinder.

Through adopting above-mentioned technical scheme, the setting of dodging the groove can also avoid adjusting a section of thick bamboo butt and circle and cause the hindrance to the normal rotation of bearing on the bearing inner race under the enough circumstances of a assurance regulation section of thick bamboo thickness.

Preferably, a gap is reserved between the adjusting cylinder and an output shaft of the motor.

Through adopting above-mentioned technical scheme, can avoid the inner wall of a strip adjusting cylinder and the output shaft butt of motor to cause the hindrance to the normal rotation of motor output shaft.

Preferably, the adjusting cylinder is provided with a locking member for preventing the adjusting cylinder from rotating.

Through adopting above-mentioned technical scheme, a retaining member can fix and adjust a section of thick bamboo to make the power of adjusting a section of thick bamboo butt on the motor inner bearing unanimous all the time, and can not make an adjusting section of thick bamboo take place relative movement under the exogenic action, make the axial volume of scurrying of motor keep unanimous.

Preferably, the adjusting cylinder is provided with a locking groove communicated with the inner hole of the adjusting cylinder, the locking groove divides one side of the adjusting cylinder into a first adjusting part and a second adjusting part, the locking piece comprises a locking nail in threaded connection for adjustment, and the locking nail is located at one end of the adjusting cylinder provided with the locking groove and is simultaneously in threaded connection with the first adjusting part and the second adjusting part.

Through adopting above-mentioned technical scheme, through with the lock pin on first regulating part and second regulating part threaded connection simultaneously, then continue to revolve wrong lock pin, one side of first regulating part orientation second regulating part and one side of second regulating part orientation first regulating part will be close to for the screw pitch dislocation of the threaded connection between an adjusting cylinder and the end cover, an adjusting cylinder will be unable rotatory for the end cover, the realization is to the locking effect of an adjusting cylinder.

Preferably, the width of the locking groove is 0.5 cm.

Through adopting above-mentioned technical scheme, can die the lock of adjusting a section of thick bamboo under the condition that does not destroy adjusting a section of thick bamboo and end cover screw thread.

Preferably, the locking nail is a countersunk head screw.

By adopting the technical scheme, the countersunk head screw can be flush with the end face of the adjusting cylinder after being screwed into the adjusting cylinder.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the arrangement of the adjusting cylinder can ensure that when the axial displacement of the motor is adjusted, the distance between the adjusting cylinder and the bearing can be adjusted by directly screwing the position of the adjusting cylinder on the end cover on the outside, so that the axial displacement of the motor can be adjusted without disassembling the motor, and the operation is very simple and convenient;

2. the arrangement of the avoidance groove and the clearance ensures that the adjusting cylinder does not hinder the normal rotation of the output shaft of the motor;

3. the setting of retaining member can play the dead effect of lock to an adjusting cylinder, thereby avoids adjusting a section of thick bamboo under the exogenic action and takes place to rotate and change and the motor inner bearing between the distance.

Drawings

Fig. 1 is a schematic view of a conventional motor structure.

Fig. 2 is a schematic view of the overall structure of the present application.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a schematic view of the present application for showing the structure of the adjustment cylinder.

Fig. 5 is a schematic view of another viewing angle for embodying the structure of the adjustment cylinder in the present application.

Description of reference numerals: 11. a stator; 12. an end cap; 13. an output shaft; 14. a rotor; 15. a bearing; 16. a flat bond; 2. an adjusting cylinder; 21. an avoidance groove; 22. a void; 23. a locking groove; 24. a first adjusting section; 25. a second regulating part; 3. a locking member; 31. and (4) locking nails.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1, a dc torque motor commonly used at present mainly includes two end caps 12, a stator 11 fixedly connected between the two end caps 12, and an output shaft 13 rotatably connected between the two end caps 12, one end of the output shaft 13 extends out of the end caps 12 and is connected with an external device for driving the external device to rotate, a rotor 14 is sleeved on a portion of the output shaft 13 located inside the stator 11, the rotor 14 is connected with the output shaft 13 through a flat key 16 to drive the output shaft 13 to rotate together, two bearings 15 are further sleeved on a portion of the output shaft 13 located inside the stator 11, the two bearings 15 are respectively located at two ends of the output shaft 13 and located between the two end caps 12 and the output shaft 13, the bearings 15 are in interference fit with the end caps 12 and the output shaft 13, and friction force between the end caps 12. However, when the motor is used, axial displacement of the motor is increased due to self-alignment adjustment of the magnetic center line of the stator and rotor 14 of the motor, and the like, which may affect the service life of the motor and generate noise, vibration and the like.

The embodiment of the application discloses a direct current torque motor axial clearance adjusting device. Referring to fig. 2 and 3, the axial clearance adjusting device of the direct current torque motor comprises an adjusting cylinder 2 detachably connected to one end cover 12 of the motor and a locking piece 3 for locking the adjusting cylinder 2 on the end cover 12. Adjust a 2 one end and bearing 15 outer lane butt of section of thick bamboo, retaining member 3 can fix the position of adjusting a 2 on end cover 12, avoids adjusting a 2 and receives reasons such as motor vibration and change and the bearing 15 between relative position when the motor moves, influences the axial volume of scurrying of motor.

The adjusting cylinder 2 is sleeved on an output shaft 13 of the motor, one end, far away from the bearing 15, of the adjusting cylinder 2 is exposed to the outside, and a worker can directly rotate the adjusting cylinder 2 to adjust the distance between the adjusting cylinder 2 and the bearing 15 in the outside, so that the axial displacement of the motor is adjusted. The outer wall of the adjusting cylinder 2 is provided with an external thread, the end cover 12 is provided with an internal thread meshed with the external thread on the adjusting cylinder 2, the end cover 12 and the adjusting cylinder 2 can be fixed at the relative position by connecting the adjusting cylinder 2 with the end cover 12 in a threaded manner, and then the axial position of the bearing 15 can be limited by screwing the adjusting cylinder 2 to abut against the end part of the outer ring of the bearing 15, so that the purpose of adjusting the axial displacement of the motor is achieved.

Referring to fig. 3, the internal diameter of adjusting a section of thick bamboo 2 is less than the external diameter of bearing 15 inner circle, offer simultaneously at an adjustment section of thick bamboo 2 towards the one end of bearing 15 and dodge groove 21, dodge groove 21 and adjust 2 hole intercommunications of a section of thick bamboo, when adjusting a section of thick bamboo 2 and bearing 15 butt, dodge groove 21 and be located bearing 15 inner circle department, and adjust the outer lane butt of a 2 tip and bearing 15, can also increase the thickness of adjusting a section of thick bamboo 2 when guaranteeing that an adjustment section of thick bamboo 2 does not influence bearing 15 normal pivoted, increase the intensity of adjusting a section of thick bamboo 2. The inner diameter of the adjusting cylinder 2 is larger than that of the motor output shaft 13, so that a gap 22 is reserved between the adjusting cylinder 2 and the motor output shaft 13, and the adjusting cylinder 2 cannot hinder the normal rotation of the motor output shaft 13. It can be understood that the inner diameter of the adjusting cylinder 2 may be larger than the outer diameter of the inner ring of the bearing 15, so that when the end of the adjusting cylinder 2 abuts against the bearing 15, the end of the adjusting cylinder 2 abuts against the outer ring of the bearing 15 without affecting the inner ring of the bearing 15.

Referring to fig. 3 to 5, a locking groove 23 is formed in an outer wall of the adjustment cylinder 2, the locking groove 23 is formed along a radial direction of the adjustment cylinder 2, and a side of the adjustment cylinder 2 where the locking groove 23 is formed is divided into a first adjustment portion 24 away from the bearing 15 and a second adjustment portion 25 abutting against the bearing 15 by the locking groove 23. The locking member 3 comprises a locking nail 31 which is in threaded connection with one end of the adjusting cylinder 2 far away from the bearing 15, the locking nail 31 is positioned on one side of the adjusting cylinder 2, which is provided with a locking groove 23, so that the locking nail 31 can be in threaded connection with the middle positions of the first adjusting part 24 and the second adjusting part 25 at the same time, when a worker screws the locking nail 31 from one end of the first adjusting part 24 far away from the second adjusting part 25 to the first adjusting part 24 and the second adjusting part 25 finally, the locking nail 31 is continuously screwed, as the first adjusting part 24 is screwed to the limit position, the locking groove 23 is arranged between the first adjusting part 24 and the second adjusting part 25, the locking nail 31 drives the second adjusting part 25 to be close to the first adjusting part 24 until one end of the second adjusting part 25 facing the first adjusting part 24 abuts against the first adjusting part 24. At this time, the external thread processed on the second adjusting portion 25 and the internal thread on the end cover 12 produce dislocation extrusion, so that the adjusting cylinder 2 cannot rotate on the end cover 12, thereby fixing the position of the adjusting cylinder 2 and locking the adjusting cylinder 2.

Wherein, the locking nail 31 can be selected from a countersunk head screw, when the locking nail 31 is screwed on the adjusting cylinder 2, the end part of the locking nail 31 is flush with the end part of the adjusting cylinder 2.

Meanwhile, in order to avoid damage to the external thread on the second adjusting part 25 and the internal thread on the end cover 12 when the external thread on the second adjusting part 25 and the internal thread on the end cover 12 are misaligned, the width of the locking groove 23 can be processed to be 0.5cm, and the locking effect on the adjusting cylinder 2 can be achieved under the condition that the threads on the second adjusting part 25 are not damaged. Of course, the width of the locking groove 23 can also be selected from other suitable parameters, as long as the locking of the adjustment sleeve 2 can be achieved without destroying the threads on the second adjustment portion 25 and the end cap 12.

The implementation principle of the device for adjusting the axial clearance of the direct-current torque motor in the embodiment of the application is as follows: during the use, directly will adjust a section of thick bamboo 2 and twist soon on end cover 12, then adjust motor axial volume of scurrying to suitable degree, thereby twist lock pin 31 and twist on adjusting a section of thick bamboo 2 and even as an organic whole with first regulation portion 24 and second regulation portion 25, then continue to twist lock pin 31, just can drive second regulation portion 25 and be close to first regulation portion 24 direction, realize that first regulation portion 24 is towards the one end of second regulation portion 25 and the one end butt of second regulation portion 25 towards first regulation portion 24 for the external screw thread of second regulation portion 25 misplaces with the internal thread of end cover 12, thereby realize the locking to adjusting a section of thick bamboo 2. When the axial displacement of the motor needs to be adjusted, a worker directly unscrews the locking nail 31 from the adjusting cylinder 2 from the outside, the external thread of the second adjusting part 25 is normally meshed with the internal thread of the end cover 12, and then the adjusting cylinder 2 can be directly screwed to adjust the axial displacement of the motor. The motor is not required to be disassembled, and the adjustment is more convenient.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a direct current torque motor axial clearance adjusting device which characterized in that: including dismantling regulation section of thick bamboo (2) of connection on end cover (12), regulation section of thick bamboo (2) cover establish on output shaft (13) of motor and with end cover (12) threaded connection of motor, adjust the outer lane butt that a section of thick bamboo (2) one end and bearing (15) are close to end cover (12) one end, the one end of keeping away from bearing (15) in regulation section of thick bamboo (2) is exposed to the external world.

2. The direct current torque motor axial gap adjustment device according to claim 1, characterized in that: the inner diameter of the adjusting cylinder (2) is larger than the outer diameter of the inner ring of the bearing (15).

3. The direct current torque motor axial gap adjustment device according to claim 1, characterized in that: the internal diameter of adjusting a section of thick bamboo (2) is less than the external diameter of bearing (15) inner circle, the one end that adjusts a section of thick bamboo (2) and be close to bearing (15) is seted up and is avoided adjusting groove (21) of dodging of a section of thick bamboo (2) and bearing (15) inner circle contact, dodge groove (21) with adjust a section of thick bamboo (2) hole intercommunication.

4. The direct current torque motor axial gap adjustment device according to claim 3, characterized in that: and a gap is reserved between the adjusting cylinder (2) and an output shaft (13) of the motor.

5. The direct current torque motor axial gap adjustment device according to claim 1, characterized in that: adjust and be provided with on a section of thick bamboo (2) and avoid adjust a section of thick bamboo (2) and take place pivoted retaining member (3).

6. The direct current torque motor axial gap adjustment device according to claim 5, wherein: the adjusting device is characterized in that a locking groove (23) communicated with an inner hole of the adjusting barrel (2) is formed in the outer wall of the adjusting barrel (2), the locking groove (23) is used for dividing one side of the adjusting barrel (2) into a first adjusting portion (24) and a second adjusting portion (25), the locking piece (3) comprises a locking nail (31) in threaded connection on the adjusting barrel (2), the locking nail (31) is located at one end of the adjusting barrel (2) which is provided with the locking groove (23), and simultaneously the first adjusting portion (24) and the second adjusting portion (25) are in threaded connection.

7. The direct current torque motor axial gap adjustment device according to claim 6, wherein: the width of the locking groove (23) is 0.5 cm.

8. The direct current torque motor axial gap adjustment device according to claim 6, wherein: the locking nail (31) is a countersunk screw.