Motor shaft with long service life and high temperature resistance

Abstract

The long-service-life high-temperature-resistant motor shaft comprises a bearing body and a bearing cavity, the bearing body is fixedly connected into a motor through a fixing shaft, a flange plate is fixedly installed on the outer side of the end, away from the fixing shaft, of the bearing body, and a noise reduction structure is arranged on the outer side of the bearing body. An oil injection hole structure and a bearing cavity are arranged on the inner side of the bearing main body, a sealing structure is mounted in the oil injection hole structure, the bearing main body comprises an outer shaft, an inner shaft and a vacuum interlayer, and the vacuum interlayer is arranged between the outer shaft and the inner shaft. The noise reduction structure comprises a first noise reduction groove and a second noise reduction groove. According to the long-service-life high-temperature-resistant motor shaft, the arranged bearing body can improve the high-temperature-resistant performance of the motor shaft, the service life of the motor shaft is further prolonged, noise generated during operation of the motor shaft can be reduced through the noise reduction structure, and the bearing cavity can be in a sealed state through the oil injection hole structure and the sealing structure.

Description

Technical Field

[0001] This utility model relates to the field of motor shaft technology, specifically a long-life, high-temperature resistant motor shaft. Background Technology

[0002] The main function of a motor shaft is to transmit the mechanical energy generated by the motor to the load equipment. The motor generates torque through electromagnetic induction in the stator and rotor, and the motor shaft converts this torque into mechanical energy to drive the load equipment (such as pumps, fans, conveyor belts, etc.).

[0003] Referring to Chinese Patent Publication No. CN216490074U, published on May 10, 2022, a motor shaft is disclosed, comprising a shaft body and a balance block sleeved on the shaft body. The shaft body has a receiving groove embedded in the area where the balance block is sleeved, and the remaining areas are coated with a wear-resistant lubricating layer. The receiving groove is filled with a curing adhesive to secure the balance block to the shaft body. This utility model solves the technical problem of how to improve the service life and operational stability of a motor shaft, and has advantages such as low maintenance and operating costs, low operating noise, and high transmission accuracy.

[0004] The existing technologies have the following technical problems: the existing long-life, high-temperature resistant motor shafts only improve the lifespan of the motor shaft by using composite materials, which means that the long lifespan and high-temperature resistance of the motor shaft need to be improved. Therefore, we propose a long-life, high-temperature resistant motor shaft to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a long-life, high-temperature resistant motor shaft, in order to solve the problem mentioned in the background art that the existing long-life, high-temperature resistant motor shafts only improve the life of the motor shaft by selecting composite materials, thus the long life and high-temperature resistance of the motor shaft need to be improved.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a long-life, high-temperature resistant motor shaft, comprising a bearing body and a bearing cavity, wherein the bearing body is fixedly connected to the motor via a fixed shaft, a flange is fixedly installed on the outer side of the bearing body away from the fixed shaft, a noise-absorbing structure is provided on the outer side of the bearing body, an oil injection hole structure and a bearing cavity are provided on the inner side of the bearing body, and a sealing structure is installed inside the oil injection hole structure;

[0007] The bearing body includes an outer shaft, an inner shaft, and a vacuum interlayer, with the vacuum interlayer provided between the outer shaft and the inner shaft.

[0008] Preferably, the noise reduction structure includes a first noise reduction groove and a second noise reduction groove. The first noise reduction groove is axially and angularly formed on the outer surface of the outer shaft, and the second noise reduction groove is longitudinally and equidistantly formed on the outer surface of the outer shaft.

[0009] Preferably, the oil injection hole structure includes a threaded hole and a round hole, wherein the threaded hole is formed inside the inner shaft wall and the round hole is formed inside the outer shaft wall.

[0010] Preferably, the sealing structure includes a threaded rod, a handle, and a sealing plug, with the handle fixedly connected to one end of the threaded rod and the sealing plug fixedly installed at the end of the threaded rod away from the handle.

[0011] Preferably, the threaded rod is threaded into the threaded hole, the handle is disposed in the circular hole, and the sealing plug is disposed in the threaded rod near the bearing cavity.

[0012] Preferably, a bearing cavity is formed inside the inner shaft.

[0013] Preferably, a flange is fixedly installed on the outer side of the outer shaft at the end away from the fixed shaft.

[0014] Preferably, a fixed shaft is fixedly connected to one end of the outer shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the bearing body of this long-life, high-temperature resistant motor shaft can improve the high-temperature resistance of the motor shaft and further improve its service life; the noise reduction structure can reduce the noise generated during the operation of the motor shaft; and the oil injection hole structure and sealing structure can make the bearing cavity sealed.

[0016] 1. It is equipped with a bearing body, which is composed of an outer shaft and an inner shaft, and a vacuum sandwich is set between the inner and outer shafts. The use of composite materials can improve the stability and strength of the materials, thereby further improving the service life of the motor shaft.

[0017] Furthermore, the vacuum interlayer effectively reduces the transfer of heat from high-temperature regions to low-temperature regions by reducing heat conduction and convection, thereby improving the heat resistance of the motor shaft in high-temperature environments.

[0018] 2. It is equipped with a noise reduction structure. Multiple first noise reduction grooves are opened on the outer surface of the outer shaft, and multiple equidistant second noise reduction grooves are also opened. The two different shapes of noise reduction grooves work together to improve the noise reduction effect of the motor shaft. Combined with the vacuum setting of the bearing body, the noise reduction effect is further improved.

[0019] 3. It is equipped with an oil injection hole structure and a sealing structure. The threaded rod is threaded into the threaded hole, so that the sealing plug just blocks the threaded hole, making the bearing cavity sealed. The threaded design makes the seal removable, which facilitates the injection of lubricating oil into the bearing cavity. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the main structure of the bearing of this utility model;

[0023] Figure 4 This is a schematic diagram of the oil injection hole structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the sealing structure of this utility model.

[0025] In the diagram: 1. Fixed shaft; 2. Flange; 3. Bearing body; 301. Outer shaft; 302. Inner shaft; 303. Vacuum jacket; 4. Noise-absorbing structure; 401. First noise-absorbing groove; 402. Second noise-absorbing groove; 5. Oil injection hole structure; 501. Threaded hole; 502. Round hole; 6. Sealing structure; 601. Threaded rod; 602. Handle; 603. Sealing plug; 7. Bearing cavity. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-5 The present invention provides the following technical solution:

[0028] A long-life, high-temperature resistant motor shaft includes a bearing body 3 and a bearing cavity 7. The bearing body 3 is fixedly connected to the motor via a fixed shaft 1. A flange 2 is fixedly installed on the outer side of the bearing body 3 away from the fixed shaft 1. A noise-absorbing structure 4 is provided on the outer side of the bearing body 3. An oil injection hole structure 5 and a bearing cavity 7 are provided on the inner side of the bearing body 3. A sealing structure 6 is installed in the oil injection hole structure 5.

[0029] The bearing body 3 includes an outer shaft 301, an inner shaft 302 and a vacuum interlayer 303, with the vacuum interlayer 303 provided between the outer shaft 301 and the inner shaft 302.

[0030] like Figures 1-4As shown, the bearing body 3 includes an outer shaft 301, an inner shaft 302, and a vacuum interlayer 303. The vacuum interlayer 303 is provided between the outer shaft 301 and the inner shaft 302. The outer shaft 301 and the inner shaft 302 can be made of two different composite materials, thereby improving the overall strength of the motor shaft. With the vacuum interlayer 303, the coefficient of thermal expansion of the material changes less in a vacuum environment, which can reduce stress concentration caused by temperature changes, thereby further improving the stability and strength of the motor shaft and thus increasing its service life.

[0031] Example 1: Vacuum interlayer 303 effectively reduces the transfer of heat from high-temperature areas to low-temperature areas by reducing heat conduction and convection. This heat insulation design can significantly improve the heat resistance of the motor shaft in high-temperature environments and further improve the service life of the motor shaft. At the same time, vacuum interlayer 303 also plays a certain role in noise reduction. Vacuum interlayer 303 can reduce vibration transmission by reducing the direct contact between the motor shaft and the external structure, thereby reducing noise.

[0032] like Figures 1-4 As shown, the noise reduction structure 4 includes a first noise reduction groove 401 and a second noise reduction groove 402. The first noise reduction groove 401 is axially and equidistantly opened on the outer surface of the outer shaft 301, and it is in the shape of a vertical strip. The second noise reduction groove 402 is longitudinally and equidistantly opened on the outer surface of the outer shaft 301, and it is in the shape of a ring. The two grooves with different shapes, together with the vacuum jacket 303, improve the noise reduction effect of the motor shaft.

[0033] Example 2: Figure 4 As shown, the oil injection hole structure 5 includes a threaded hole 501 and a round hole 502. The threaded hole 501 is opened in the inner shaft 302 wall, and the round hole 502 is opened in the outer shaft 301 wall. A bearing cavity 7 is opened in the inner shaft 302. An oil pipe with a diameter smaller than that of the threaded hole 501 is inserted into the threaded hole 501 through the round hole 502. The pipe opening is aligned with the bearing cavity 7, and lubricating oil is injected into it. Then the oil pipe is pulled out.

[0034] like Figure 3 and Figure 5 As shown, the sealing structure 6 includes a threaded rod 601, a handle 602, and a sealing plug 603. One end of the threaded rod 601 is fixedly connected to the handle 602. By holding the handle 602, the threaded rod 601 is inserted into the round hole 502 and then screwed into the threaded hole 501. After the handle 602 enters the round hole 502, it is continued to be screwed in with a tool until the handle 602 is completely inside the round hole 502. The sealing plug 603 is fixedly installed at the end of the threaded rod 601 away from the handle 602. At this time, the sealing plug 603 blocks the threaded hole 501, thereby sealing the bearing cavity 7.

[0035] A fixed shaft 1 is fixedly connected to one end of the outer shaft 301. The fixed shaft 1 is connected to the motor. A flange 2 is fixedly installed on the outer side of the outer shaft 301 away from the fixed shaft 1. The motor shaft is fixedly connected to the rotating shaft of other components through the flange 2 and bolts.

[0036] The above completes a series of operations for the long-life, high-temperature resistant motor shaft. Any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A long-life, high-temperature resistant motor shaft, comprising a bearing body (3) and a bearing cavity (7), characterized in that: The bearing body (3) is fixedly connected to the motor via a fixed shaft (1). A flange (2) is fixedly installed on the outer side of the bearing body (3) away from the fixed shaft (1). A noise-absorbing structure (4) is provided on the outer side of the bearing body (3). An oil injection hole structure (5) and a bearing cavity (7) are provided on the inner side of the bearing body (3). A sealing structure (6) is installed inside the oil injection hole structure (5). The bearing body (3) includes an outer shaft (301), an inner shaft (302) and a vacuum interlayer (303), with the vacuum interlayer (303) provided between the outer shaft (301) and the inner shaft (302).

2. The long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: The noise reduction structure (4) includes a first noise reduction groove (401) and a second noise reduction groove (402). The first noise reduction groove (401) is axially and equidistantly opened on the outer surface of the outer shaft (301), and the second noise reduction groove (402) is longitudinally and equidistantly opened on the outer surface of the outer shaft (301).

3. The long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: The oil injection hole structure (5) includes a threaded hole (501) and a round hole (502). The threaded hole (501) is opened in the inner shaft (302) wall, and the round hole (502) is opened in the outer shaft (301) wall.

4. The long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: The sealing structure (6) includes a threaded rod (601), a handle (602) and a sealing plug (603). One end of the threaded rod (601) is fixedly connected to the handle (602), and the other end of the threaded rod (601) away from the handle (602) is fixedly installed with the sealing plug (603).

5. A long-life, high-temperature resistant motor shaft according to claim 4, characterized in that: The threaded rod (601) is threaded into the threaded hole (501), the handle (602) is set in the round hole (502), and the sealing plug (603) is set in the threaded rod (601) near the bearing cavity (7).

6. The long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: The inner shaft (302) has a bearing cavity (7).

7. A long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: A flange (2) is fixedly installed on the outer side of the outer shaft (301) at the end away from the fixed shaft (1).

8. A long-life, high-temperature resistant motor shaft according to claim 1, characterized in that: A fixed shaft (1) is fixedly connected to one end of the outer shaft (301).

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