Low-wear motor shaft

Abstract

The utility model discloses a low-wear motor shaft, which comprises a motor shaft main body and fixing mechanisms fixedly sleeved on the two sides of the motor shaft main body, the motor shaft main body is used for outputting the power of a motor, the fixing mechanisms are arranged on the two sides of the motor shaft, and the motor shaft main body can be directly connected with a motor shell through the fixing mechanisms. No bearing is needed, so that the mounting steps of the motor shaft are reduced; the fixing mechanism comprises an inner ring sleeve fixedly sleeving the motor shaft, an outer ring main body sleeving the outer side of the inner ring sleeve, side ring main bodies mounted on the two sides of the inner ring sleeve through threaded connection, and balls arranged between the inner ring sleeve and the outer ring main body and between the side ring main bodies and the outer ring main body in an annular array; the arc-shaped sponge strips are fixed to the inner wall of the outer ring body in an annular array mode, the oil injection pipe is installed on one side of the outer ring body, and the low-abrasion motor shaft has the advantages of being convenient to install, low in abrasion and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft technology, specifically a low-wear motor shaft. Background Technology

[0002] The motor shaft is a cylindrical component that extends from the motor and its housing. It is not only a support component in the motor, but also an output component that generates power. Its purpose is to convert the motor's energy to provide the speed and torque required by the motor. It is an important component in the motor.

[0003] The existing motor shaft has the following main drawbacks during use: the motor shaft is fixedly connected to the motor housing through bearings, but during long-term use, bearing wear leads to motor... Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: a low-wear motor shaft, comprising: a motor shaft body and a fixing mechanism fixedly sleeved on both sides of the motor shaft body. The fixing mechanism includes an inner ring sleeve fixedly sleeved on the motor shaft, an outer ring body sleeved on the outside of the inner ring sleeve, a side ring body installed on both sides of the inner ring sleeve by threaded connection, balls arranged in a ring array between the inner ring sleeve and the outer ring body and between the side ring body and the outer ring body, a plurality of arc-shaped sponge strips fixed in a ring array on the inner wall of the outer ring body, and an oil injection pipe installed on one side of the outer ring body.

[0006] The outer ring body has an annular oil storage chamber inside, which is connected to the oil injection pipe through a connecting channel.

[0007] In a preferred embodiment, the present invention can be further configured such that: the cross-section of the outer ring body is trapezoidal, and a second outer ring groove is formed on both inclined surfaces, and a first outer ring groove is formed on the inner side of the outer ring body.

[0008] In a preferred embodiment, the present invention can be further configured such that: a first inner ring groove is formed on the outer side surface of the inner ring sleeve, the first inner ring groove corresponds to the first outer ring groove, one side of the side ring body is inclined, and a second inner ring groove is formed on the inclined surface, the second outer ring groove corresponds to the second inner ring groove.

[0009] In a preferred embodiment, the present invention can be further configured such that oil holes are arranged in a ring array on the inner walls of both the first outer ring groove and the second outer ring groove, and the oil holes are connected to the ring-shaped oil storage cavity.

[0010] In a preferred embodiment, the present invention can be further configured such that: balls are arranged in an array between the first inner ring groove and the first outer ring groove, and between the second inner ring groove and the second outer ring groove.

[0011] In a preferred embodiment, the present invention can be further configured such that: arc-shaped sponge strips are arranged in an array on the inner walls of both the first outer ring groove and the second outer ring groove, and the arc-shaped sponge strips and the ball bearings are spaced apart.

[0012] In a preferred embodiment, the present invention can be further configured such that a sealing ring is provided on the outer surface of the side ring body.

[0013] In a preferred embodiment, this utility model can be further configured such that external threads are provided on both outer surfaces of the inner ring sleeve and internal threads are provided on the inner surface of the side ring body, and the two mesh with each other.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] 1. In this utility model, fixing mechanisms are installed on both sides of the motor shaft body. The motor shaft body is directly connected to the motor housing through the fixing structure, reducing the installation steps of the motor shaft and increasing the convenience of motor shaft installation. In addition, the fixing mechanism consists of an inner ring sleeve, an outer ring body, and two side ring bodies. Ball bearings are arranged in a circular array between the inner ring sleeve, the outer ring body, and the side ring bodies. Through the above arrangement, the radial and axial friction of the motor shaft during rotation can be effectively reduced, that is, the wear of the motor shaft is reduced and the service life of the motor shaft is extended.

[0016] 2. In this utility model, arc-shaped sponge strips are fixed in an array on the inner walls of the first and second outer ring grooves on the outer ring body, and an annular oil storage cavity is set inside the outer ring body. The annular oil storage cavity is connected to the arc-shaped sponge strips through oil holes. Through the above arrangement, lubricating oil enters the arc-shaped sponge strips from the annular oil storage cavity through the oil holes. When the motor shaft body rotates, it drives the inner ring sleeve and the side ring body to rotate synchronously. At this time, the arc-shaped sponge strips can apply lubricating oil to the first inner ring groove of the inner ring sleeve and the second outer ring groove of the outer ring body, forming an oil film on the inner walls of the first inner ring groove and the second outer ring groove, further reducing the friction between the ball and the inner and side rings, reducing the wear between the inner and outer rings, and improving the practical performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is an exploded view of the fixing mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the outer ring structure of this utility model.

[0021] Figure label:

[0022] 100. Motor shaft body;

[0023] 200. Fixing mechanism; 210. Inner ring sleeve; 211. First inner ring groove; 220. Outer ring body; 221. First outer ring groove; 222. Second outer ring groove; 223. Annular oil storage chamber; 224. Oil hole; 225. Connecting flow channel; 230. Ball bearing; 240. Arc-shaped sponge strip; 250. Oil injection pipe; 260. Side ring body; 261. Second inner ring groove; 262. Sealing ring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0025] Some embodiments of this utility model are described below with reference to the accompanying drawings.

[0026] Example 1

[0027] Combination Figure 1-4 As shown, this embodiment provides a low-wear motor shaft, including: a motor shaft body 100 and a fixing mechanism 200 fixedly sleeved on both sides of the motor shaft body 100.

[0028] The motor shaft body 100 is used to output the power of the motor. The fixing mechanism 200 is installed on both sides of the motor shaft. Through the fixing structure, the motor shaft body 100 can be directly connected to the motor housing without bearings, which reduces the installation steps of the motor shaft.

[0029] The fixing mechanism 200 includes an inner ring sleeve 210 fixedly sleeved on the motor shaft, an outer ring body 220 sleeved on the outside of the inner ring sleeve 210, a side ring body 260 installed on both sides of the inner ring sleeve 210 by threaded connection, balls 230 arranged in a ring array between the inner ring sleeve 210 and the outer ring body 220 and between the side ring body 260 and the outer ring body 220, a plurality of arc-shaped sponge strips 240 fixed in a ring array on the inner wall of the outer ring body 220, and an oil injection pipe 250 installed on one side of the outer ring body 220.

[0030] The inner ring sleeve 210 is fixedly sleeved on the motor shaft, and its cross-section is convex. The outer ring body 220 is sleeved on the outside of the inner ring sleeve 210 for fixing to the motor housing. The cross-section of the outer ring body 220 is trapezoidal, and a second outer ring groove 222 is opened on both inclined surfaces. A first outer ring groove 221 is opened on the inner side of the outer ring body 220. At the same time, a first inner ring groove 211 is opened on the outer side of the inner ring sleeve 210. The first inner ring groove 211 and the first outer ring groove 221 correspond to each other. Ball bearings 230 are arranged in a ring array between the first inner ring groove 211 and the first outer ring groove 221, which can effectively reduce the friction force when the motor shaft body 100 rotates and reduce the rotational wear of the motor shaft.

[0031] The side ring body 260 is installed on both sides of the inner ring sleeve 210 by threaded connection. External threads are provided on the outer surfaces of both ends of the inner ring sleeve 210, and internal threads are provided on the inner surface of the side ring body 260. The two are interlocked, which facilitates the installation and disassembly of the side ring. At the same time, one side of the side ring body 260 is set with an inclined surface, and a second inner ring groove 261 is opened on the inclined surface. The second outer ring groove 222 corresponds to the second inner ring groove 261. Ball bearings 230 are arranged in an array between the second inner ring groove 261 and the second outer ring groove 222, which can effectively reduce the axial friction when the motor shaft body 100 rotates and prevent the axial runout of the motor shaft body 100 after long-term operation.

[0032] The outer ring body 220 has an annular oil storage cavity 223 inside. The annular oil storage cavity 223 is connected to the oil injection pipe 250 through the connecting flow channel 225, so that lubricating oil can be delivered into the annular oil storage cavity 223 through the oil injection hole 224. At the same time, oil holes 224 are arranged in annular array on the inner wall of the first outer ring groove 221 and the second outer ring groove 222. The oil holes 224 are connected to the annular oil storage cavity 223, so that the lubricating oil in the annular oil storage cavity 223 can be delivered out through the oil holes 224.

[0033] Arc-shaped sponge strips 240 are arranged in an array on the inner walls of the first outer ring groove 221 and the second outer ring groove 222. The arc-shaped sponge strips 240 are spaced apart from the balls 230 and are close to the oil holes 224. When the motor shaft body 100 rotates, it drives the inner ring sleeve 210 and the side ring body 260 to rotate synchronously. At this time, the arc-shaped sponge strips 240 can apply lubricating oil to the first inner ring groove 211 of the inner ring sleeve 210 and the second outer ring groove 222 of the outer ring body 220, forming an oil film on the inner walls of the first inner ring groove 211 and the second outer ring groove 222, further reducing the friction between the balls 230 and the inner and side rings.

[0034] In addition, a sealing ring 262 is provided on the outer side surface of the side ring body 260 to ensure the sealing between the side ring body 260 and the outer ring body 220 and prevent dust from entering.

[0035] The working principle and usage process of this utility model are as follows: In use, the outer ring body 220 is fixed to the motor housing to complete the installation of the motor shaft body 100. When the motor shaft rotates, it drives the inner ring sleeve 210 and the side ring body 260 to rotate. Due to the ball bearings 230 provided between the inner ring sleeve 210 and the outer ring body 220, and between the side ring body 260 and the outer ring body 220, the axial and radial friction forces during motor shaft rotation are effectively reduced. Simultaneously, the annular oil reservoir 223... The lubricating oil seeps out through the oil hole 224 into the arc-shaped sponge strip 240. The rotation of the motor shaft body 100 drives the inner ring sleeve 210 and the side ring body 260 to rotate synchronously. At this time, the arc-shaped sponge strip 240 can apply the lubricating oil to the first inner ring groove 211 of the inner ring sleeve 210 and the second outer ring groove 222 of the outer ring body 220, forming an oil film on the inner wall of the first inner ring groove 211 and the second outer ring groove 222, further reducing the friction between the ball 230 and the inner ring and the side ring.

[0036] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A low-wear motor shaft, comprising: The motor shaft body (100) and the fixing mechanism (200) fixedly sleeved on both sides of the motor shaft body (100) are characterized in that the fixing mechanism (200) includes an inner ring sleeve (210) fixedly sleeved on the motor shaft, an outer ring body (220) sleeved on the outside of the inner ring sleeve (210), a side ring body (260) installed on both sides of the inner ring sleeve (210) by threaded connection, balls (230) arranged in a ring array between the inner ring sleeve (210) and the outer ring body (220) and between the side ring body (260) and the outer ring body (220), a plurality of arc-shaped sponge strips (240) fixed in a ring array on the inner wall of the outer ring body (220), and an oil injection pipe (250) installed on one side of the outer ring body (220). The outer ring body (220) is provided with an annular oil storage chamber (223), which is connected to the oil injection pipe (250) through a connecting channel (225).

2. The low-wear motor shaft according to claim 1, characterized in that, The cross-section of the outer ring body (220) is trapezoidal, and a second outer ring groove (222) is opened on both sides of the inclined surface. A first outer ring groove (221) is opened on the inner side of the outer ring body (220).

3. A low-wear motor shaft according to claim 2, characterized in that, The outer side of the inner ring sleeve (210) has a first inner ring groove (211) and a first outer ring groove (221) corresponding to each other. One side of the side ring body (260) is set with an inclined surface, and a second inner ring groove (261) is opened on the inclined surface. The second outer ring groove (222) corresponds to the second inner ring groove (261).

4. A low-wear motor shaft according to claim 2, characterized in that, Oil holes (224) are arranged in a ring array on the inner walls of the first outer ring groove (221) and the second outer ring groove (222), and the oil holes (224) are connected to the annular oil storage cavity (223).

5. A low-wear motor shaft according to claim 3, characterized in that, Ball bearings (230) are arranged in an array between the first inner ring groove (211) and the first outer ring groove (221), and between the second inner ring groove (261) and the second outer ring groove (222).

6. A low-wear motor shaft according to claim 2, characterized in that, The inner walls of the first outer ring groove (221) and the second outer ring groove (222) are arranged in an array with arc-shaped sponge strips (240), and the arc-shaped sponge strips (240) and the balls (230) are arranged at intervals.

7. A low-wear motor shaft according to claim 1, characterized in that, A sealing ring (262) is provided on the outer surface of the side ring body (260).

8. A low-wear motor shaft according to claim 1, characterized in that, External threads are provided on the outer surfaces of both ends of the inner ring sleeve (210), and internal threads are provided on the inner surface of the side ring body (260), and the two mesh with each other.

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