Stable motor shaft connection structure

Abstract

The utility model provides a motor shaft connection structure with stable connection, including a connecting sleeve, which is sleeved on the motor shaft; a tapered roller bearing, which has an inner ring and an outer ring, and the inner ring is interference-fitted with the connecting sleeve; an adjusting piece, which is arranged on the connecting sleeve and abuts against the side end face of the outer ring of the tapered roller bearing, and is used to adjust the clearance of the tapered roller bearing. The motor shaft connection structure with stable connection provided by the utility model is provided with a connecting sleeve, which can be sleeved on the protruding end of the motor shaft; a tapered roller bearing is provided, the inner ring of the tapered roller bearing can be interference-fitted with the connecting sleeve, and the outer ring can be connected to the motor housing; an adjusting piece is provided on the connecting sleeve, which can abut against the side end face of the outer ring of the tapered roller bearing, and the clearance of the tapered roller bearing can be adjusted by pushing the outer ring of the tapered roller bearing to move.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor auxiliary connection, and in particular relates to a motor shaft connection structure with stable connection. Background Art

[0002] The motor is a device that converts electrical energy into mechanical energy and is widely used in various power equipment. The motor shaft is an important part of the motor. It plays a key role in supporting the rotating parts, transmitting torque, and determining the relative position of the rotating parts to the stator.

[0003] In the prior art, when the ends of the motor shaft are connected, a bearing is usually arranged at the output end of the motor shaft, the inner ring is connected to the output end of the motor shaft, and the outer ring is connected to the motor end cover. The bearing can bear the weight of the motor rotor and ensure that the rotor can rotate smoothly. However, when the bearing clearance is too large (the bearing clearance refers to the gap inside the bearing), the center of rotation of the motor will change greatly with the load change, causing the motor to vibrate, which will not only affect the normal operation of the motor, but may also cause equipment damage and shorten its life, and has poor adaptability and poor practicality. Utility Model Content

[0004] The embodiment of the utility model provides a motor shaft connection structure with a stable connection, aiming to solve the problems of poor adaptability and poor practicality of the existing motor shaft bearing connection method.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a motor shaft connection structure with stable connection, including:

[0006] A connecting sleeve is sleeved on the motor shaft;

[0007] A tapered roller bearing, comprising an inner ring and an outer ring, wherein the inner ring is interference fit with the connecting sleeve;

[0008] The adjusting member is arranged on the connecting sleeve and abuts against the side end surface of the outer ring of the tapered roller bearing, and is used for adjusting the clearance of the tapered roller bearing.

[0009] In a possible implementation, the adjusting member includes:

[0010] A thrust ball bearing is sleeved on the connecting sleeve, and one side wall of the thrust ball bearing abuts against the outer ring of the tapered roller bearing;

[0011] The adjusting structure is sleeved on the connecting sleeve and abuts against the other side wall of the thrust ball bearing, and is used to move the thrust ball bearing along the axis of the motor shaft to push the outer ring of the tapered roller bearing to move, thereby changing the clearance size of the tapered roller bearing.

[0012] In a possible implementation, the adjustment structure includes:

[0013] A fixed sleeve, which is sleeved on the connecting sleeve and fixedly connected to the connecting sleeve;

[0014] An adjusting sleeve is sleeved on the fixed sleeve, threadedly connected to the fixed sleeve, and abuts against the side wall corresponding to the thrust ball bearing. It is used to move along the axis direction of the motor shaft while the adjusting sleeve rotates, so that the abutting thrust ball bearing moves along the axis direction of the motor shaft to push the outer ring of the tapered roller bearing to move, thereby changing the clearance size of the tapered roller bearing.

[0015] In a possible implementation manner, the inner ring of the thrust ball bearing is clearance-fitted with the connecting sleeve.

[0016] In a possible implementation, the connecting sleeve is key-connected to the motor shaft.

[0017] In a possible implementation, a marking line is provided on the adjusting sleeve to facilitate the staff to determine the moving distance of the adjusting sleeve along the axis direction of the motor shaft.

[0018] In a possible implementation, the stably connected motor shaft connection structure also includes a fixing ring, which is sleeved on the connecting sleeve, abuts against the other side wall of the tapered roller bearing, and is located between the tapered roller bearing and the shoulder of the motor shaft, to prevent the shoulder from abutting against the side wall of the tapered roller bearing.

[0019] In this implementation, compared with the prior art, a connecting sleeve is provided, which can be sleeved on the protruding end of the motor shaft; a tapered roller bearing is provided, the inner ring of the tapered roller bearing can be interference fit with the connecting sleeve, and the outer ring can be connected to the motor housing; an adjusting piece is provided on the connecting sleeve, which can abut against the side end face of the outer ring of the tapered roller bearing, and the clearance of the tapered roller bearing can be adjusted by pushing the outer ring of the tapered roller bearing to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a full cross-section structure of a motor shaft connection structure with a stable connection provided by an embodiment of the utility model;

[0021] Figure 2 A schematic side view of a motor shaft connection structure with a stable connection provided by an embodiment of the utility model;

[0022] Description of reference numerals:

[0023] 10. Connecting sleeve; 20. Tapered roller bearing; 30. Adjusting piece; 31. Thrust ball bearing; 32. Adjusting structure; 321. Fixed sleeve; 322. Adjusting sleeve; 3221. Marking line; 40. Fixed ring. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Please also read Figure 1 and Figure 2 The stable connection motor shaft connection structure provided by the utility model is now described. The stable connection motor shaft connection structure comprises: a connection sleeve 10, a tapered roller bearing 20 and an adjusting member 30.

[0026] The connecting sleeve 10 is sleeved on the motor shaft.

[0027] The tapered roller bearing 20 has an inner ring and an outer ring, and the inner ring is interference fit with the connecting sleeve 10 .

[0028] The adjusting member 30 is disposed on the connecting sleeve 10 and abuts against the side end surface of the outer ring of the tapered roller bearing 20 to adjust the clearance of the tapered roller bearing 20 .

[0029] Compared with the prior art, the motor shaft connection structure with stable connection provided in this embodiment is provided with a connection sleeve 10, which can be sleeved on the protruding end of the motor shaft. A tapered roller bearing 20 is provided, and the inner ring of the tapered roller bearing 20 can be interference fit with the connection sleeve 10, and the outer ring can be connected to the motor housing. An adjustment member 30 is provided on the connection sleeve 10, which can abut against the side end face of the outer ring of the tapered roller bearing 20, and the clearance of the tapered roller bearing 20 is adjusted by pushing the outer ring of the tapered roller bearing 20 to move.

[0030] In some embodiments, the adjusting member 30 may be configured as follows: Figure 1 See the structure shown. Figure 1 The adjusting member 30 includes: a thrust ball bearing 31 and an adjusting structure 32: the thrust ball bearing 31 is sleeved on the connecting sleeve 10, and one side wall of the thrust ball bearing 31 abuts against the outer ring of the tapered roller bearing 20. The adjusting structure 32 is sleeved on the connecting sleeve 10 and abuts against the other side wall of the thrust ball bearing 31, and is used to move the thrust ball bearing 31 along the axis of the motor shaft to push the outer ring of the tapered roller bearing 20 to move, thereby changing the clearance size of the tapered roller bearing 20.

[0031] The thrust ball bearing 31 can move along the axial direction of the motor shaft. Driven by the adjustment structure 32, the thrust ball bearing 31 can move along the axial direction of the motor shaft to push the outer ring of the tapered roller bearing 20 to move, thereby changing the clearance size of the tapered roller bearing 20. The thrust ball bearing 31 is designed to withstand thrust loads and is composed of a washer-shaped ring with a raceway groove for ball rolling. Since the ring is a seat cushion, the thrust ball bearing 31 is divided into two types: a flat base cushion type and a self-aligning spherical seat cushion type. In addition, this bearing can withstand axial loads. The thrust ball bearing 31 is a prior art and will not be described in detail here.

[0032] In some embodiments, the adjustment structure 32 may be implemented as follows: Figure 1 , Figure 2 See the structure shown. Figure 1 , Figure 2 The adjustment structure 32 includes: a fixed sleeve 321 and an adjustment sleeve 322. The fixed sleeve 321 is sleeved on the connecting sleeve 10 and is fixedly connected to the connecting sleeve 10. The adjustment sleeve 322 is sleeved on the fixed sleeve 321, threadedly connected to the fixed sleeve 321, and abuts against the side wall corresponding to the thrust ball bearing 31, and is used to move along the axis direction of the motor shaft while the adjustment sleeve 322 rotates, so that the abutted thrust ball bearing 31 moves along the axis direction of the motor shaft, so as to push the outer ring of the tapered roller bearing 20 to move, thereby changing the clearance size of the tapered roller bearing 20.

[0033] The fixed sleeve 321 can be understood as being fixed on the connecting sleeve 10 and rotating with the motor shaft. The fixed sleeve 321 can prevent the thrust ball bearing 31 from scratching the motor shaft when it moves along the motor shaft, thereby extending the service life of the motor shaft. The adjusting sleeve 322 can be threadedly connected to the fixed sleeve 321, and can move along the axis of the motor shaft while rotating, so that the abutting thrust ball bearing 31 moves along the axis of the motor shaft to push the outer ring of the tapered roller bearing 20 to move, thereby changing the clearance size of the tapered roller bearing 20.

[0034] In some embodiments, the thrust ball bearing 31 may be Figure 1 See the structure shown. Figure 1 The inner ring of the thrust ball bearing 31 is clearance-matched with the connecting sleeve 10 .

[0035] The thrust ball bearing 31 and the connecting sleeve 10 are clearance-matched, so that the thrust ball bearing 31 can move axially along the motor shaft.

[0036] In some embodiments, the connecting sleeve 10 may be used as follows: Figure 1 , Figure 2 See the structure shown. Figure 1 , Figure 2 The connecting sleeve 10 is connected to the motor shaft by a key.

[0037] The key connection is to achieve circumferential fixation between the shaft and the parts on the shaft through the key to transmit motion and torque. The key connection is a prior art and will not be described in detail here.

[0038] In some embodiments, the adjustment sleeve 322 may be configured as follows: Figure 2 See the structure shown. Figure 2 A marking line 3221 is provided on the adjusting sleeve 322 to facilitate the staff to determine the moving distance of the adjusting sleeve 322 along the axis direction of the motor shaft.

[0039] The marking line 3221 can facilitate the staff to determine the moving distance of the adjusting sleeve 322 along the axis direction of the motor shaft, and can accurately adjust the clearance of the tapered roller bearing 20.

[0040] In some embodiments, the above-mentioned stable connection motor shaft connection structure can be adopted as follows Figure 1 See the structure shown. Figure 1 The stable motor shaft connection structure also includes a fixing ring 40, which is sleeved on the connecting sleeve 10, abuts against the other side wall of the tapered roller bearing 20, and is located between the tapered roller bearing 20 and the shoulder of the motor shaft, to prevent the shoulder from abutting against the side wall of the tapered roller bearing 20.

[0041] The fixing ring 40 can prevent the shaft shoulder from abutting against the side wall of the tapered roller bearing 20, thereby avoiding friction between the motor shaft and the inner ring of the tapered roller bearing 20 when the motor shaft is working. The size of the fixing ring 40 can be adjusted according to the size of the motor shaft.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stable motor shaft connection structure, characterized in that: include: A connecting sleeve is sleeved on the motor shaft; A tapered roller bearing having an inner ring and an outer ring, wherein the inner ring is interference fit with the connecting sleeve; An adjusting member, which is arranged on the connecting sleeve and abuts against a side end surface of the outer ring of the tapered roller bearing, and is used to adjust the clearance of the tapered roller bearing; The adjusting member comprises: A thrust ball bearing is sleeved on the connecting sleeve, and one side wall of the thrust ball bearing abuts against the outer ring of the tapered roller bearing; The adjusting structure is sleeved on the connecting sleeve and abuts against the other side wall of the thrust ball bearing, and is used to move the thrust ball bearing along the axis of the motor shaft to push the outer ring of the tapered roller bearing to move, thereby changing the clearance size of the tapered roller bearing.

2. The motor shaft connection structure with stable connection according to claim 1, characterized in that: The regulatory structure comprises: A fixed sleeve, which is sleeved on the connecting sleeve and fixedly connected to the connecting sleeve; An adjusting sleeve is sleeved on the fixed sleeve, threadedly connected to the fixed sleeve, and abuts against the side wall corresponding to the thrust ball bearing. It is used to move along the axis direction of the motor shaft while the adjusting sleeve rotates, so that the abutting thrust ball bearing moves along the axis direction of the motor shaft to push the outer ring of the tapered roller bearing to move, thereby changing the clearance size of the tapered roller bearing.

3. The stably connected motor shaft connection structure according to claim 1, characterized in that: The inner ring of the thrust ball bearing is clearance-matched with the connecting sleeve.

4. The stably connected motor shaft connection structure according to claim 3, characterized in that: The connecting sleeve is key-connected to the motor shaft.

5. The stably connected motor shaft connection structure according to claim 2, characterized in that: The adjusting sleeve is provided with marking lines for facilitating the staff to determine the moving distance of the adjusting sleeve along the axis direction of the motor shaft.

6. The stably connected motor shaft connection structure according to claim 1, characterized in that: The stably connected motor shaft connection structure also includes a fixing ring, which is sleeved on the connecting sleeve, abuts against the other side wall of the tapered roller bearing, and is located between the tapered roller bearing and the shoulder of the motor shaft, to prevent the shoulder from abutting against the side wall of the tapered roller bearing.

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