Electrically-driven rear end cover gas circuit testing fixture

By adopting a combined structure of a limit gas pipe and a return spring in the electric drive rear end cover gas circuit inspection tool, the problem of air leakage is easily encountered during the rear end cover detection in the prior art, and the accuracy and efficiency of gas circuit detection are achieved.

CN222993918UActive Publication Date: 2025-06-17CHANGSHA BODA MACHINERY PARTS CO LTD
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Patent Information

Application Number
CN202422220861.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-11
Publication Date
2025-06-17
Estimated Expiration
2034-09-11

AI Technical Summary

Technical Problem

The existing electric drive rear end cap gas circuit inspection kit is not convenient to be fully sealed during use, resulting in air leakage during the rear end cap during the inspection, affecting the detection results, and reducing practicality and efficiency.

Method used

An electric drive rear end cover gas circuit inspection tool is designed, using a combined structure of a limit gas pipe and a return spring. The limit gas pipe and the installation block are elastically connected to ensure that the ventilation port is blocked by the limit gas pipe to avoid gas leakage. At the same time, the rear end cover is limited by using rubber pads and press rods to prevent position deviation.

Benefits of technology

It effectively avoids gas leakage, ensures the accuracy and completeness of gas circuit detection, and improves the practicality and efficiency of gas circuit detection tools.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222993918U_ABST
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Abstract

The utility model discloses an electrically-driven rear end cover gas circuit testing fixture, and relates to the technical field of electrically-driven rear end covers, the electrically-driven rear end cover gas circuit testing fixture comprises a base, a supporting vertical plate and a limiting gas delivery pipe, the supporting vertical plate is installed at the upper end of the base, a rear end cover main body is arranged outside the supporting vertical plate, and installation blocks are distributed outside the rear end cover main body. Meanwhile, a limiting gas conveying pipe is connected into the mounting block, a gas outlet is formed in the front end of the limiting gas conveying pipe, a gas inlet pipe is arranged at the rear end of the limiting gas conveying pipe, a reset spring is additionally arranged outside the side, close to the mounting block, of the gas inlet pipe, a mounting bolt is connected into the supporting vertical plate, and a mounting nut is connected to the front end of the mounting bolt; a fixing base is installed outside the supporting vertical plate, an auxiliary handle is connected outside the upper end of the fixing base, and a material abutting block is additionally arranged at the lower end in the auxiliary handle. The electrically-driven rear end cover gas circuit testing fixture can perform full sealing in the rear end cover detection process, avoids the influence of gas leakage of the rear end cover on overall detection, and improves the overall use efficiency of the gas circuit testing fixture.
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Description

Technical Field

[0001] The utility model relates to the technical field of electric drive rear end covers, in particular to an air circuit detector for an electric drive rear end cover. Background Technique

[0002] The electric drive rear end cover refers to the part connecting the motor and the reducer, usually located at the rear of the motor. In the electric drive system, the rear end cover is an important part between the motor and the reducer. It not only connects the motor and the reducer, but may also be involved in the axial positioning and sealing of the motor rotor. The design and manufacture of the rear end cover are crucial for ensuring the performance and reliability of the electric drive system. After the rear end cover of the generator is produced, it is necessary to conduct an airtightness test on the rear end cover of the generator to eliminate the rear end covers with poor sealing effects and prevent water vapor or liquid from entering the generator. In order to improve the use efficiency of the electric drive rear end cover, an air circuit detector is required. However, the existing air circuit detectors still have the following deficiencies:

[0003] When the existing air circuit detector is in use, since most air circuit detectors are not convenient to fully seal the rear end cover during the use process, air leakage is likely to occur during the detection of the rear end cover, thus affecting the detection result, resulting in the problem of decreased practicality and reduced use efficiency of the air circuit detector.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an air circuit detector for an electric drive rear end cover is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air circuit detector for an electric drive rear end cover to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An air circuit detector for an electric drive rear end cover, including a base, a supporting vertical plate, and a limiting air pipe. A supporting vertical plate is installed at the upper end of the base, and a rear end cover body is arranged outside the supporting vertical plate. Installation blocks are distributed outside the rear end cover body, and a limiting air pipe is connected inside the installation blocks. An air outlet is arranged at the front end of the limiting air pipe, and an air inlet pipe is arranged at the rear end of the limiting air pipe. A return spring is additionally arranged outside the air inlet pipe close to one side of the installation block. An installation bolt is connected inside the supporting vertical plate, and an installation nut is connected to the front end of the installation bolt. A fixing seat is installed outside the supporting vertical plate, and an auxiliary handle is connected to the upper end outside the fixing seat. A material pressing block is additionally arranged at the lower end inside the auxiliary handle, and a pressing rod is distributed below the material pressing block. A rubber pad is installed below the front end of the pressing rod.

[0007] Further, the supporting vertical plate and the base are vertically distributed, and the supporting vertical plate and the base are fixedly connected by bolts.

[0008] Furthermore, the internal dimensions of the mounting block are adapted to the external dimensions of the limiting gas transmission pipe, and the limiting gas transmission pipe is embedded in the mounting block.

[0009] Furthermore, the outer side of the limiting gas transmission pipe is in close contact with the inner side of the return spring, and the limiting gas transmission pipe is elastically connected to the mounting block through the return spring.

[0010] Furthermore, the mounting bolts are vertically distributed with respect to the supporting vertical plate, and the mounting bolts are embedded in the supporting vertical plate.

[0011] Furthermore, the external dimensions of the mounting bolts are adapted to the internal dimensions of the mounting nuts, and the mounting nuts are rotatably connected to the mounting bolts.

[0012] Furthermore, the auxiliary handle and the fixed seat are limitedly connected by bolts, and the auxiliary handle is rotatably connected to the fixed seat.

[0013] Furthermore, the outer side of the rubber pad is horizontally distributed with the outer side of the rear end cover body, and the outer side of the rubber pad is in close contact with the outer side of the rear end cover body.

[0014] The present utility model provides an air circuit inspection tool for an electric drive rear end cover, having the following beneficial effects:

[0015] 1. Through the setting of the limiting gas transmission pipe, when the air circuit inspection tool for the electric drive rear end cover is used, the limiting gas transmission pipe is elastically connected to the mounting block through the return spring, and at the same time, the external dimensions of the limiting gas transmission pipe match the dimensions of the ventilation opening opened inside the rear end cover body. Thus, when the limiting gas transmission pipe enters the inside of the rear end cover body, the ventilation opening is blocked by the limiting gas transmission pipe, thereby avoiding gas leakage. Gas is conveyed into the limiting gas transmission pipe through the air inlet pipe and discharged through the air outlet, thereby performing air circuit detection on the electric drive rear end cover, improving the overall practicality and use efficiency of the air circuit inspection tool.

[0016] 2. Through the setting of the pressure rod, when the air circuit inspection tool for the electric drive rear end cover is used, pressure is applied to the pressure rod through the abutting block provided in the middle of the auxiliary handle, so that the rubber pad comes into contact with the rear end cover body accordingly. Thus, the rubber pad is used to simply limit the rear end cover body. The mounting bolts are installed into the supporting vertical plate through the threaded mounting grooves opened inside the supporting vertical plate. At the same time, the mounting bolts pass through the inside of the rear end cover body, and the rear end cover body is limited outside the supporting vertical plate by using the mounting nuts in cooperation with the mounting bolts, thereby avoiding position deviation during the detection of the rear end cover and improving the overall practicality of the air circuit inspection tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the air circuit inspection tool for the electric drive rear end cover of the present utility model;

[0018] Figure 2 The enlarged structural schematic diagram of part A in Figure 1 the air path detector for the rear end cover of the electric drive of the present utility model;

[0019] Figure 3 The three-dimensional structural schematic diagram of the limiting air delivery pipe of the air path detector for the rear end cover of the electric drive of the present utility model;

[0020] Figure 4 The three-dimensional rear view structural schematic diagram of the support vertical plate of the air path detector for the rear end cover of the electric drive of the present utility model.

[0021] In the figure: 1. Base; 2. Support vertical plate; 3. Rear end cover main body; 4. Installation block; 5. Limiting air delivery pipe; 6. Air outlet; 7. Air inlet pipe; 8. Return spring; 9. Installation bolt; 10. Installation nut; 11. Fixed seat; 12. Auxiliary handle; 13. Material pressing block; 14. Material pressing rod; 15. Rubber pad. Specific embodiments

[0022] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0023] As Figure 1 , Figure 3 and Figure 4 shown, the air path detector for the rear end cover of the electric drive includes a base 1, a support vertical plate 2 and a limiting air delivery pipe 5. The support vertical plate 2 is installed at the upper end of the base 1, and the rear end cover main body 3 is arranged outside the support vertical plate 2. The installation blocks 4 are distributed outside the rear end cover main body 3. The limiting air delivery pipe 5 is connected inside the installation block 4. The air outlet 6 is arranged at the front end of the limiting air delivery pipe 5, and the air inlet pipe 7 is arranged at the rear end of the limiting air delivery pipe 5. A return spring 8 is additionally arranged outside the side of the air inlet pipe 7 close to the installation block 4. The support vertical plate 2 and the base 1 are vertically distributed, and the support vertical plate 2 and the base 1 are fixedly connected by bolts. The internal dimension of the installation block 4 is adapted to the external dimension of the limiting air delivery pipe 5, and the limiting air delivery pipe 5 is embedded in the installation block 4. The outer side of the limiting air delivery pipe 5 is closely attached to the inner side of the return spring 8, and the limiting air delivery pipe 5 is elastically connected to the installation block 4 through the return spring 8. The installation block 4 is fixedly installed outside the support vertical plate 2 through fastening bolts, and at the same time, the limiting air delivery pipe 5 is limited and installed inside the installation block 4. The return spring 8 is used to make the limiting air delivery pipe 5 elastically connected to the installation block 4. At the same time, the external dimension of the limiting air delivery pipe 5 matches the dimension of the ventilation port opened inside the rear end cover main body 3. Thus, when the limiting air delivery pipe 5 enters the inside of the rear end cover main body 3, the ventilation port is blocked by the limiting air delivery pipe 5, thereby avoiding gas leakage. The air inlet pipe 7 is used to convey gas into the limiting air delivery pipe 5 and discharge it through the air outlet 6, thereby detecting the air path of the rear end cover of the electric drive and improving the overall practicability and use efficiency of the air path detector.

[0024] As Figures 1 to 4 shown, an installation bolt 9 is connected inside the support vertical plate 2, and an installation nut 10 is connected to the front end of the installation bolt 9. A fixing seat 11 is installed outside the support vertical plate 2, and an auxiliary handle 12 is connected to the outside of the upper end of the fixing seat 11. A material pressing block 13 is additionally provided at the lower end inside the auxiliary handle 12. At the same time, a material pressing rod 14 is distributed at the lower end of the material pressing block 13. A rubber pad 15 is installed below the front end of the material pressing rod 14. The installation bolt 9 and the support vertical plate 2 are vertically distributed, and the installation bolt 9 is embedded in the support vertical plate 2. The outer dimension of the installation bolt 9 is adapted to the inner dimension of the installation nut 10, and the installation nut 10 is rotatably connected to the installation bolt 9. The auxiliary handle 12 and the fixing seat 11 are connected by bolt limit, and the auxiliary handle 12 is rotatably connected to the fixing seat 11. The outer side of the rubber pad 15 and the outer side of the rear end cover body 3 are horizontally distributed, and the outer side of the rubber pad 15 is closely attached to the outer side of the rear end cover body 3. The fixing seat 11 is fixedly installed outside the support vertical plate 2 through a fastening bolt, the auxiliary handle 12 is limit installed outside the fixing seat 11, and at the same time, the material pressing rod 14 is vertically installed inside the fixing seat 11. When the auxiliary handle 12 is pressed inward, the material pressing block 13 provided in the middle of the inner part of the auxiliary handle 12 applies pressure to the material pressing rod 14 accordingly, so that the rubber pad 15 comes into contact with the rear end cover body 3 accordingly, thereby simply limiting the rear end cover body 3 by using the rubber pad 15. The installation bolt 9 is installed into the support vertical plate 2 through a threaded installation groove opened inside the support vertical plate 2. At the same time, the installation bolt 9 passes through the inside of the rear end cover body 3, and the rear end cover body 3 is limited outside the support vertical plate 2 by using the installation nut 10 in cooperation with the installation bolt 9, thereby avoiding the position deviation during the detection of the rear end cover and improving the overall practicability of the air circuit inspection tool.

[0025] In summary, when using the air circuit inspection tool for the rear end cover of the electric drive, first, fix and install the support vertical plate 2 on the upper rear side of the base 1 through the fastening bolts, fix and install the fixing seat 11 on the outer side of the support vertical plate 2 using the fastening bolts, limit and install the auxiliary handle 12 outside the fixing seat 11, and at the same time, vertically install the pressure rod 14 inside the fixing seat 11. When the auxiliary handle 12 is pressed inward, the material pressing block 13 arranged in the middle of the auxiliary handle 12 applies pressure to the pressure rod 14 accordingly, so that the rubber pad 15 comes into contact with the rear end cover body 3, thereby simply limiting the rear end cover body 3 using the rubber pad 15. Install the installation bolt 9 into the support vertical plate 2 through the threaded installation groove opened inside the support vertical plate 2, and at the same time, pass the installation bolt 9 through the rear end cover body 3. Use the installation nut 10 to cooperate with the installation bolt 9 to fixedly install the rear end cover body 3 outside the support vertical plate 2. Then, make the limit air pipe 5 elastically connected to the installation block 4 using the return spring 8. At the same time, the outer dimension of the limit air pipe 5 matches the dimension of the air vent opened inside the rear end cover body 3. Thus, when the limit air pipe 5 enters the rear end cover body 3, the air vent is blocked by the limit air pipe 5, thereby avoiding gas leakage. Convey gas into the limit air pipe 5 through the air inlet pipe 7 and discharge it through the air outlet 6, thereby detecting the air circuit of the rear end cover of the electric drive and improving the overall practicality and use efficiency of the air circuit inspection tool.

[0026] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. An electric drive rear end cover gas path inspection fixture, comprising a base (1), a support vertical plate (2) and a limit gas delivery pipe (5), characterized in that: A support vertical plate (2) is installed on the upper end of the base (1), and a rear end cover body (3) is arranged outside the support vertical plate (2), and a mounting block (4) is distributed outside the rear end cover body (3), and a limited air supply pipe (5) is connected inside the mounting block (4), and a gas outlet (6) is arranged at the front end of the limited air supply pipe (5), and an air inlet pipe (7) is arranged at the rear end of the limited air supply pipe (5), and a return spring (8) is additionally provided on the outside of the air inlet pipe (7) close to the mounting block (4), and a mounting bolt (9) is connected inside the support vertical plate (2), and a mounting nut (10) is connected at the front end of the mounting bolt (9), and a fixing seat (11) is installed outside the support vertical plate (2), and an auxiliary handle (12) is connected to the outside of the upper end of the fixing seat (11), and a material stop block (13) is additionally provided at the lower end of the auxiliary handle (12), and a material pressing rod (14) is distributed at the lower end of the material stopping block (13), and a rubber pad (15) is installed below the front end of the material pressing rod (14).

2. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The support vertical plate (2) and the base (1) are vertically distributed, and the support vertical plate (2) and the base (1) are fixedly connected by bolts.

3. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The internal dimensions of the mounting block (4) are compatible with the external dimensions of the position-limiting air supply pipe (5), and the position-limiting air supply pipe (5) and the mounting block (4) are connected in an embedded manner.

4. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The outer side of the position-limiting air supply pipe (5) is tightly fitted with the inner side of the return spring (8), and the position-limiting air supply pipe (5) is elastically connected to the mounting block (4) via the return spring (8).

5. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The mounting bolts (9) and the supporting vertical plate (2) are distributed in a vertical shape, and the mounting bolts (9) and the supporting vertical plate (2) are embeddedly connected.

6. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The external dimensions of the mounting bolt (9) are matched to the internal dimensions of the mounting nut (10), and the mounting nut (10) is rotatably connected to the mounting bolt (9).

7. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The auxiliary handle (12) and the fixing seat (11) are connected in a limited position by means of bolts, and the auxiliary handle (12) and the fixing seat (11) are rotatably connected.

8. The gas path inspection fixture for the rear end cover of the electric drive according to claim 1, characterized in that: The outer side of the rubber pad (15) and the outer side of the rear end cover body (3) are distributed in a horizontal shape, and the outer side of the rubber pad (15) and the outer side of the rear end cover body (3) are tightly fitted.