CN210909830U

CN210909830U - Auxiliary cushion block for dismounting bearing of external rotor motor

Info

Publication number: CN210909830U
Application number: CN201921831834.1U
Authority: CN
Inventors: 薛震宇; 陈俊毅; 陆勇; 陆奕
Original assignee: Shanghai Dazhong Xiangyuan Power Supply Co Ltd
Current assignee: Shanghai Dazhong Xiangyuan Power Supply Co Ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-03
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to an auxiliary cushion block for external rotor motor bearing dismantles, including the cushion body, set up in cushion body one end and with the output shaft socket of output shaft looks adaptation, set up in cushion body side and with the notch of electric wire looks adaptation and set up at the inside electric wire blind hole of cushion body, the notch is linked together through electric wire blind hole and output shaft socket. Compared with the prior art, the utility model discloses a design an auxiliary cushion block that is used for external rotor electric machine bearing to dismantle, not only can protect the electric wire on output shaft top, the electric wire on output shaft top is crushed to the screw rod of drawing the horse when avoiding dismantling the bearing, still can not influence the normal dismantlement of bearing simultaneously.

Description

Auxiliary cushion block for dismounting bearing of external rotor motor

Technical Field

The utility model belongs to the technical field of the external rotor electric machine, a supplementary cushion that is used for external rotor electric machine bearing to dismantle is related to.

Background

The puller is a tool frequently used in mechanical maintenance, is mainly used for axially detaching a damaged bearing from an output shaft of a motor, and can be used as an internal puller or an external puller. When the dismounting tool is used, the screw tip of the puller is positioned at the top end of the motor output shaft, then the pulling claw of the puller is hooked on the bearing outer ring on the motor output shaft, and finally the rotating handle of the puller is rotated, so that the pulling claw drives the bearing to move outwards along the axial direction for dismounting. That is, when the bearing is removed by the puller, the screw of the puller must contact and interact with the top end of the motor output shaft.

However, in the case of the external rotor motor having the electric wire at the tip of the output shaft, when the bearing is removed by the puller, the electric wire is crushed by the screw of the puller since the electric wire is attached to the tip of the output shaft of the external rotor motor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an auxiliary cushion block for external rotor motor bearing dismantlement in order to overcome the defect that above-mentioned prior art exists, the screw rod that can avoid drawing the horse crushes the electric wire on output shaft top, is convenient for dismantle the bearing smoothly again simultaneously.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides an auxiliary cushion for external rotor electric machine bearing dismantles, the tip of external rotor electric machine's output shaft be equipped with the electric wire, the output shaft on the cover be equipped with the bearing, auxiliary cushion include the cushion body, set up in cushion body one end and with the output shaft socket of output shaft looks adaptation, set up in the cushion body side and with the notch of electric wire looks adaptation and set up the electric wire blind hole inside the cushion body, the notch be linked together through electric wire blind hole and output shaft socket. The output shaft socket is convenient for fix a position the output shaft of outer rotor motor, and electric wire blind hole and notch are convenient for draw forth the electric wire from the edgewise.

Furthermore, the cushion block body is cylindrical.

Further, the outer diameter of the cushion block body is 1.5-2.5cm larger than that of the output shaft. Can fix a position the output shaft, can avoid again influencing the dismantlement of bearing.

Further, the length of the cushion block body is larger than 10 cm.

Further, the inner diameter of the output shaft socket is larger than the outer diameter of the output shaft. The internal diameter of output shaft socket slightly is greater than the external diameter of output shaft, is convenient for fix a position the output shaft.

Further, the axial length of the output shaft socket is 1-2 cm.

Further, the inner diameter of the wire blind hole is smaller than the outer diameter of the output shaft. The output shaft is prevented from penetrating through the output shaft socket and then extending into the electric wire blind hole.

Furthermore, the axial length of the wire blind hole is 2/3 of the axial length of the cushion block body, so that a sufficient extending space of the wire is ensured.

Furthermore, the width of the notch is less than or equal to the inner diameter of the blind hole of the wire.

When the utility model is in practical application, the end part of the output shaft of the outer rotor motor is inserted into the socket of the output shaft and is pressed against the step surface in the socket of the output shaft, and meanwhile, the electric wire at the end part of the output shaft passes through the blind hole of the electric wire and is led out through the notch; when the bearing is disassembled, the top of the screw rod of the puller is abutted against the end, not provided with the opening, of the cushion block body, the pulling claw of the puller is hooked on the bearing on the output shaft, and then the rotating handle of the puller is rotated, so that the pulling claw drives the bearing to move outwards along the axial direction for disassembling.

Compared with the prior art, the utility model has the characteristics of it is following:

1) by designing the auxiliary cushion block for disassembling the bearing of the external rotor motor, the electric wire at the top end of the output shaft can be protected, the electric wire at the top end of the output shaft is prevented from being damaged by a screw rod of a puller when the bearing is disassembled, and meanwhile, the normal disassembly of the bearing cannot be influenced;

2) through the matching of the output shaft socket, the electric wire blind hole and the notch, the top end of the output shaft can be positioned, and meanwhile, the electric wire at the top end of the output shaft can be led out from the side surface, so that the electric wire is ensured to have enough extension space;

3) the screw rod of the puller is not directly contacted with the top end of the output shaft or the electric wire, so that the electric wire is prevented from being crushed.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of the present invention when used for disassembling a bearing;

the notation in the figure is:

1-output shaft, 2-electric wire, 3-bearing, 4-cushion block body, 5-output shaft spigot, 6-notch, 7-electric wire blind hole, 8-screw rod, 9-pulling claw.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example (b):

as shown in fig. 2, an electric wire 2 is provided at an end of an output shaft 1 of the external rotor motor, and a bearing 3 is fitted over the output shaft 1. An auxiliary cushion block for dismounting an outer rotor motor bearing as shown in fig. 1 comprises a cushion block body 4, an output shaft socket 5 which is arranged at one end of the cushion block body 4 and is matched with an output shaft 1, a notch 6 which is arranged on the side surface of the cushion block body 4 and is matched with an electric wire 2, and an electric wire blind hole 7 which is arranged inside the cushion block body 4, wherein the notch 6 is communicated with the output shaft socket 5 through the electric wire blind hole 7.

Wherein, the cushion block body 4 is in a cylinder shape. The outer diameter of the cushion block body 4 is 1.5-2.5cm larger than that of the output shaft 1. The length of the cushion block body 4 is more than 10 cm. The inner diameter of the output shaft socket 5 is larger than the outer diameter of the output shaft 1. The axial length of the output shaft socket 5 is 1-2 cm. The inner diameter of the wire blind hole 7 is smaller than the outer diameter of the output shaft 1. The axial length of the wire blind hole 7 is 2/3 of the axial length of the cushion block body 4. The width of the notch 6 is less than or equal to the inner diameter of the blind hole 7 of the wire.

In practical application, the end part of the output shaft 1 of the outer rotor motor is inserted into the output shaft socket 5 and is abutted against the step surface in the output shaft socket 5, and meanwhile, the electric wire 2 at the end part of the output shaft 1 penetrates through the electric wire blind hole 7 and is led out through the notch 6; when the bearing 3 is disassembled, the top of the screw 8 of the puller is abutted against the end, which is not opened, of the cushion block body 4, the pulling claw 9 of the puller is hooked on the bearing 3 on the output shaft 1, and then the rotating handle of the puller is rotated, so that the pulling claw 9 drives the bearing 3 to move outwards along the axial direction for disassembling.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides an auxiliary cushion for external rotor electric machine bearing dismantles, the tip of output shaft (1) of external rotor electric machine be equipped with electric wire (2), output shaft (1) on the cover be equipped with bearing (3), a serial communication port, auxiliary cushion include cushion body (4), set up in cushion body (4) one end and with output shaft (1) output shaft socket (5) of looks adaptation, set up in cushion body (4) side and with notch (6) of electric wire (2) looks adaptation and set up in inside electric wire blind hole (7) of cushion body (4), notch (6) be linked together through electric wire blind hole (7) and output shaft socket (5).

2. The auxiliary spacer block for the bearing dismounting of the external rotor motor in claim 1, wherein the spacer block body (4) is cylindrical.

3. The auxiliary spacer block for bearing disassembly of the external rotor motor in claim 2, wherein the outer diameter of the spacer block body (4) is 1.5-2.5cm larger than the outer diameter of the output shaft (1).

4. The auxiliary spacer block for the bearing dismounting of the external rotor motor in claim 2, wherein the length of the spacer block body (4) is greater than 10 cm.

5. An auxiliary cushion block for bearing disassembly of an external rotor motor according to claim 1, wherein the inner diameter of the output shaft socket (5) is larger than the outer diameter of the output shaft (1).

6. The auxiliary cushion block for the bearing dismounting of the external rotor motor is characterized in that the axial length of the output shaft socket (5) is 1-2 cm.

7. The auxiliary cushion block for the bearing dismounting of the external rotor motor is characterized in that the inner diameter of the wire blind hole (7) is smaller than the outer diameter of the output shaft (1).

8. The auxiliary spacer block for the bearing dismounting of the external rotor motor according to claim 1, wherein the axial length of the wire blind hole (7) is 2/3 times the axial length of the spacer block body (4).

9. The auxiliary cushion block for the bearing disassembly of the external rotor motor is characterized in that the width of the notch (6) is less than or equal to the inner diameter of the blind wire hole (7).