Tool capable of plugging holes of traction motor

Abstract

The utility model relates to a tool capable of plugging a hole of a traction motor, and relates to the technical field of machining and paint coating, and the tool comprises a motor housing and a plugging assembly. A plurality of mounting holes are formed in the motor shell; the plugging assembly comprises a plugging piece and a first sealing sleeve, the plugging piece is sleeved with the first sealing sleeve, the peripheral wall of the first sealing sleeve is attached to the hole wall of the mounting hole, and the plugging piece is in threaded connection with the mounting hole. The motor shell has the effects of improving the sealing performance of the mounting hole of the motor shell and reducing resin leakage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing and paint coating, in particular to a hole-plugging tool for traction motor. BACKGROUND

[0002] In the field of mechanical processing, the performance improvement of traction motor housings usually relies on resin coating and baking treatment. This process not only enhances the corrosion resistance, wear resistance and electrical insulation performance of the housing, but also significantly improves the service life and reliability of the product. However, in actual production process, how to effectively protect the mounting holes on the housing from being contaminated by coating materials has become a technical problem to be solved. With the continuous growth of market demand, the requirements for coating process are gradually increasing, especially when working in high temperature environment, the reliability and efficiency of plugging technology are particularly important.

[0003] In view of this problem, the following conventional means are usually used in the prior art to achieve plugging of the mounting hole: one is to use a simple rubber plug for physical plugging, which realizes sealing by extrusion deformation; another is to cover the mounting hole with adhesive tape or film to prevent resin from flowing in; and the third is to use a metal clamp combined with a sealing gasket to realize sealing effect by mechanical fixation. These means can meet the basic plugging requirements to some extent, but still have certain limitations.

[0004] In view of the related technology in the above, some obvious defects are exposed in actual application: first, the rubber plug loses elasticity in high temperature environment, resulting in sealing failure; second, the adhesive force of adhesive tape or film is limited and it is easy to fall off during coating process; finally, although the combination of metal clamp and sealing gasket has high reliability, it is complex to operate and has high cost. Therefore, the plugging method in the prior art cannot meet the requirements of high efficiency, reliability and adaptation to high temperature environment at the same time. CONTENT OF THE INVENTION

[0005] In order to improve the sealing performance of the mounting hole of the motor housing and reduce resin leakage, the present application provides a hole-plugging tool for traction motor.

[0006] The hole-plugging tool for traction motor provided by the present application adopts the following technical solution:

[0007] A hole-plugging tool for traction motor, characterized in that: comprising a motor housing and a plugging assembly;

[0008] A plurality of mounting holes are provided on the motor housing;

[0009] The plugging assembly comprises a plugging piece and a first sealing sleeve, the first sealing sleeve is sleeved on the plugging piece, the outer peripheral wall of the first sealing sleeve is attached to the hole wall of the mounting hole, and the plugging piece is threadedly connected with the mounting hole.

[0010] By adopting the technical scheme, the motor shell is provided with a plurality of mounting holes during machining, and in order to improve the performance of the motor shell, resin is often coated on the motor shell and drying treatment is often performed, however, in this process, if the holes are not effectively plugged, the resin can easily flow into the holes, resulting in product quality problems, therefore, the plugging piece and the first sealing sleeve are arranged, the mounting holes are plugged by the first sealing sleeve, and the resin flowing into the mounting holes is reduced.

[0011] Optionally, the first sealing sleeve is made of rubber.

[0012] By adopting the technical scheme, the first sealing sleeve made of rubber is arranged, the rubber has elastic deformation characteristics, the gap between the sealing surfaces is filled by elastic deformation, and the sealing performance of the mounting holes is improved.

[0013] Optionally, one end of the plugging piece is sleeved with a plugging head, and one side of the plugging head abuts against the outer wall of the motor shell.

[0014] By adopting the technical scheme, in order to position the plugging piece, the plugging head is arranged, one side of the plugging head abuts against the outer wall of the motor shell, the plugging piece is prevented from being displaced during installation, and the stability and sealing effect of plugging are further improved.

[0015] Optionally, one end of the plugging head away from the plugging piece is fixedly connected with a lifting ring.

[0016] By adopting the technical scheme, in order to facilitate personnel to install the plugging piece, one end of the plugging head is connected with the lifting ring, the personnel can insert the plugging piece into the mounting hole through the lifting ring, the operation process is simplified, and the work efficiency is improved.

[0017] Optionally, the plugging assembly further comprises a second sealing sleeve, the second sealing sleeve is fixedly connected to one end of the first sealing sleeve, the outer dimension of the second sealing sleeve is greater than the outer dimension of the first sealing sleeve, and the second sealing sleeve abuts against the outer wall of the motor shell.

[0018] By adopting the technical scheme, in order to further improve the sealing performance of the mounting hole and to ensure that the first sealing sleeve does not displace in the mounting hole and affect the sealing effect, the second sealing sleeve is arranged, the second sealing sleeve abuts against the side wall of the motor shell, the third sealing piece is positioned by the second sealing sleeve, the first sealing sleeve is prevented from sliding in the mounting hole and affecting the sealing effect. Through this positioning design, the first sealing sleeve is ensured to be stable and not to displace, the stability and reliability of sealing are further improved, the resin leakage problem is effectively avoided, and the quality of the motor shell coating process is ensured.

[0019] Optionally, a guide is further included, which is connected to the one end of the plugging member away from the plugging head, and the outer dimension of the guide gradually decreases away from the side of the plugging head, and the guide and the one end of the plugging member close to each other are smoothly transitioned.

[0020] By adopting the above technical scheme, when the first sealing sleeve is located in the mounting hole, in order to make the plugging member smoothly screwed into the mounting hole, the guide is arranged, the outer dimension of the guide gradually decreases away from the side of the plugging head, the shape of the guide is correspondingly arranged with the shape of the mounting hole, so as to smoothly enter the mounting hole by the tapered guide, and further make the plugging member enter the mounting hole; and by arranging the guide, the first sealing ring is first inserted into the mounting hole, the tapered guide gradually enters the inner cavity of the first sealing sleeve, the axial displacement is converted into the radial expansion of the first sealing sleeve by the inclined surface, the tapered surface continuously contacts the inner wall of the first sealing sleeve, and the local stress concentration is avoided to cause the tearing of the first sealing sleeve.

[0021] Optionally, the guide and the plugging member are detachably connected.

[0022] By adopting the above technical scheme, in order to facilitate personnel replacement, the guide and the plugging member are detachably connected.

[0023] Optionally, a recess is arranged at one end of the plugging member, and a mounting block is fixedly connected to one end of the guide and embedded in the recess.

[0024] By adopting the above technical scheme, in order to ensure the stable connection of the guide and the plugging member, the recess is designed to be closely matched with the shape of the mounting block, the connection between the guide and the plugging member is realized after the mounting block is embedded in the recess, and the operation is simple and convenient for replacement.

[0025] Optionally, the recess and the mounting block are non-circular.

[0026] By adopting the above technical scheme, when the plugging member is screwed, in order to prevent the guide from rotating relative to the plugging member, the recess and the mounting block are non-circular, so as to avoid the rotation of the guide relative to the plugging member, and improve the connection stability of the guide and the plugging member.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The present application arranges the plugging member and the first sealing sleeve, the first sealing sleeve is used to plug the mounting hole, so as to reduce the resin flowing into the mounting hole;

[0029] 2. The present application arranges the second sealing sleeve, the second sealing sleeve is used to position the first sealing sleeve, so as to reduce the displacement of the first sealing sleeve when the plugging member is screwed into the mounting hole, and improve the sealing effect;

[0030] 3. The application sets a guide, the outer size of the guide gradually decreases towards the side away from the plugging head, the guide shape corresponds to the shape of the mounting hole, so that the tapered guide smoothly enters the mounting hole, and further makes the plugging piece enter the mounting hole; and by setting the guide, the first sealing ring is first inserted into the mounting hole, the tapered guide gradually enters the first sealing sleeve inner cavity, the axial displacement is converted into the radial expansion of the first sealing sleeve through the inclined surface, the tapered surface continuously contacts the inner wall of the first sealing sleeve, and local stress concentration is avoided to cause the first sealing sleeve to tear. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural schematic diagram of the mounting hole of the motor shell of the application;

[0032] Figure 2 is a structural schematic diagram of the connection between the plugging assembly and the mounting hole of the application;

[0033] Figure 3 is a structural schematic diagram of the plugging piece and the first sealing sleeve of the application;

[0034] Figure 4 is a structural schematic diagram of the first sealing sleeve and the second sealing sleeve of the application;

[0035] Figure 5 is a structural schematic diagram of the guide of the application;

[0036] Figure 6 is a structural schematic diagram of the connection between the guide and the plugging piece of the application.

[0037] Mark explanation: 1, motor shell; 11, mounting hole; 2, plugging assembly; 21, plugging piece; 211, plugging head; 212, lifting ring; 213, embedded groove; 22, first sealing sleeve; 23, second sealing sleeve; 3, guide; 31, mounting block. DETAILED DESCRIPTION

[0038] The following will be described in detail in combination with the accompanying Figures 1-6 The application is further described in detail.

[0039] Example 1:

[0040] The embodiment of the application discloses a tool for plugging holes of a traction motor. Referring to Figure 1 , Figure 2 and Figure 3The traction motor hole plugging tool includes a motor shell 1 and a plugging assembly 2. The motor shell 1 is provided with a plurality of mounting holes 11. The plugging assembly 2 includes a plugging piece 21 and a first sealing sleeve 22. The first sealing sleeve 22 is sleeved on the plugging piece 21. The inner circumferential wall of the first sealing sleeve 22 is in interference fit with the outer circumferential wall of the plugging piece 21. The outer circumferential wall of the first sealing sleeve 22 is attached to the hole wall of the mounting hole 11. The plugging piece 21 is threadedly connected to the mounting hole 11. In this embodiment, the mounting hole 11 is a circular hole. The motor shell 1 is provided with a plurality of mounting holes 11. The outer wall of the motor shell 1 usually needs to be coated with resin and dried to improve its performance. If the resin flows into the mounting hole 11, it may cause product quality problems. In order to reduce the situation that the resin flows into the mounting hole 11, the plugging piece 21 and the first sealing sleeve 22 are arranged to seal the mounting hole 11, and the sealing ring reduces the leakage of the resin into the mounting hole 11.

[0041] Referring to Figure 3 In some embodiments, the first sealing sleeve 22 is made of rubber material. After the motor shell is coated with resin, it needs to be dried. In order to improve the performance of the first sealing sleeve 22, the first sealing sleeve 22 is made of fluororubber material in this embodiment. Fluororubber has good high temperature resistance, which reduces the damage of the first sealing sleeve 22 during drying. Fluororubber also has excellent anti-aging and chemical corrosion resistance.

[0042] Referring to Figure 3 In order to limit the plugging piece 21, a plugging head 211 is fixedly sleeved at one end of the plugging piece 21. The plugging head 211 abuts against the outer wall of the motor shell 1. By arranging the plugging head 211, one side of the plugging head 211 is tightly attached to the outer wall of the motor shell 1, so as to limit the plugging piece 21 and ensure that the plugging piece 21 does not shift during installation, thereby further improving the stability and sealing effect of plugging.

[0043] Referring to Figure 3 In order to facilitate personnel to install the plugging piece 21, a lifting ring 212 is fixedly connected to the end of the plugging head 211 away from the plugging piece 21. This allows personnel to easily insert the plugging piece 21 into the mounting hole 11 through the lifting ring 212, simplifies the operation process, improves work efficiency, and ensures accurate installation.

[0044] Embodiment 2:

[0045] Referring to Figure 4In order to further improve the sealing performance of the mounting hole 11 and ensure that the first sealing sleeve 22 does not displace to affect the sealing performance, the plugging assembly 2 further comprises a second sealing sleeve 23 fixedly connected to one end of the first sealing sleeve 22, and the outer dimension of the second sealing sleeve 23 is greater than that of the first sealing sleeve 22. The second sealing sleeve 23 abuts against the side wall of the motor housing 1 to limit the first sealing sleeve 22 through the second sealing sleeve 23, so as to prevent the first sealing sleeve 22 from sliding in the mounting hole 11 and affecting the sealing performance.

[0046] With reference to Figure 5 When the first sealing sleeve 22 is located in the mounting hole 11, in order to smoothly screw the plugging piece 21 into the mounting hole 11, the end of the plugging piece 21 away from the plugging head 211 is connected with a guide piece 3. The end of the guide piece 3 close to the plugging piece 21 is smoothly transitioned. The outer dimension of the guide piece 3 gradually decreases away from the plugging head 211, that is, the guide piece 3 is tapered. The shape of the guide piece 3 corresponds to the shape of the mounting hole 11, so that the guide piece 3 smoothly enters the mounting hole 11, and the plugging piece 21 further enters the mounting hole 11.

[0047] With reference to Figure 5 Further, by arranging the guide piece 3, the first sealing ring is first inserted into the mounting hole 11. The tapered guide piece 3 gradually enters the inner cavity of the first sealing sleeve 22. The axis displacement is converted into the radial expansion of the first sealing sleeve 22 through the inclined surface. The tapered surface continuously contacts the inner wall of the first sealing sleeve 22, so as to avoid local stress concentration to cause the first sealing sleeve 22 to be torn.

[0048] With reference to Figure 6 In order to facilitate replacement of the guide piece 3, the guide piece 3 and the plugging piece 21 are detachably connected. In some embodiments, the guide piece 3 and the plugging piece 21 can be threadedly connected or can be connected by plug-in connection. As long as the mechanical connection mode can connect the guide piece 3 and the plugging piece 21, it is within the protection scope of the present application. In the present application, the guide piece 3 and the plugging piece 21 are connected by plug-in connection.

[0049] With reference to Figure 6 Specifically, the end of the plugging piece 21 close to the guide piece 3 is provided with an embedding groove 213. One end of the guide piece 3 is fixedly connected with a mounting block 31. The mounting block 31 is embedded in the embedding groove 213, so as to realize the detachable connection between the plugging piece 21 and the guide piece 3.

[0050] With reference to Figure 6 When the plugging piece 21 is screwed, in order to prevent the guide piece 3 from rotating relative to the plugging piece 21, in some embodiments, the embedding groove 213 is non-circular. In the present embodiment, the cross sections of the embedding groove 213 and the mounting block 31 are both rectangular.

[0051] The implementation principle of the traction motor hole plugging tool is as follows: first, the plugging piece 21 with the first sealing sleeve 22 is aligned with the mounting hole 11, and is slowly screwed in until the bottom of the plugging piece 21 contacts the bottom of the mounting hole 11, and the plugging piece 21 is continuously tightened, so that the first sealing sleeve 22 is compressed to form a stable sealing layer. When the resin is coated, the sealing layer can effectively block the resin from entering the hole. Subsequently, the motor shell 1 is sent into a drying oven for pre-drying, the first sealing sleeve 22 is made of fluorine rubber material and can maintain a sealed state at high temperature to prevent resin from seeping in;

[0052] By setting the second sealing sleeve 23, the first sealing sleeve 22 is limited by the second sealing sleeve 23 to prevent the first sealing sleeve 22 from sliding in the mounting hole 11, and by setting the guide piece 3, the plugging piece 21 is ensured to be smoothly screwed in, the guide piece 3 gradually enters the inner cavity of the first sealing sleeve 22, the axis displacement is converted into the radial expansion of the first sealing sleeve 22 through the inclined surface, and at the same time, the first sealing sleeve 22 is prevented from being torn due to stress concentration, and the sealing effect is improved.

[0053] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tool for plugging holes in a traction motor, characterized by: The motor shell (1) and the plugging assembly (2) are provided with a plurality of mounting holes (11); The motor shell (1) and the plugging assembly (2) are provided with a plurality of mounting holes (11); The plugging assembly (2) comprises a plugging piece (21) and a first sealing sleeve (22), the first sealing sleeve (22) is sleeved on the plugging piece (21), the outer peripheral wall of the first sealing sleeve (22) is attached to the hole wall of the mounting hole (11), and the plugging piece (21) is threadedly connected with the mounting hole (11).

2. The tool for plugging holes of a traction motor according to claim 1, characterized in that: The first sealing sleeve (22) is made of fluorine rubber.

3. The tool for plugging holes of a traction motor according to claim 1, characterized in that: One end of the plugging piece (21) is fixedly sleeved with a plugging head (211), and one side of the plugging head (211) abuts against the outer wall of the motor shell (1).

4. The tool for plugging holes of a traction motor according to claim 3, characterized in that: The plugging head (211) is fixedly connected with a pulling ring (212) at the end away from the plugging piece (21).

5. The tool for plugging holes of a traction motor according to claim 3, characterized in that: The plugging assembly (2) further comprises a second sealing sleeve (23), the second sealing sleeve (23) is fixedly connected to one end of the first sealing sleeve (22), the outer dimension of the second sealing sleeve (23) is greater than that of the first sealing sleeve (22), and the second sealing sleeve (23) abuts against the outer wall of the motor shell (1).

6. The tool for plugging holes of a traction motor according to claim 3, characterized in that: Further comprising a guide piece (3), the guide piece (3) is connected to the end of the plugging piece (21) away from the plugging head (211), the outer dimension of the guide piece (3) gradually decreases away from the side of the plugging head (211), and the end of the guide piece (3) close to the plugging piece (21) is smoothly transitioned.

7. The tool for plugging holes of a traction motor according to claim 6, characterized in that: The guide piece (3) and the plugging piece (21) are detachably connected.

8. The tool for plugging holes of a traction motor according to claim 7, characterized in that: One end of the plugging piece (21) is provided with an embedding groove (213), one end of the guide piece (3) is fixedly connected with a mounting block (31), and the mounting block (31) is embedded in the embedding groove (213).

9. The tool for plugging holes of a traction motor according to claim 8, characterized in that: The embedding groove (213) and the mounting block (31) are non-circular.

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