Motor airtightness detection machine

Abstract

The utility model discloses a motor airtightness detection machine, which comprises a test pool and a fixing frame fixedly connected to the top of the test pool, a liftable lifting frame is arranged at the top of the test pool and corresponds to the position of the fixing frame, and a lifting seat for placing a motor shell to be detected is arranged at the bottom of the lifting frame. An electric cylinder used for driving the lifting frame to ascend and descend is installed on the top of the fixing frame, and the output end of the electric cylinder is fixedly connected with the top of the lifting frame. The top sealing seat at the bottom of the driving frame is driven by the electric telescopic rod to move downwards so as to seal the motor shell, then the lifting frame is driven by the electric cylinder to move downwards, the sealed motor shell is placed in water in the testing pool, and meanwhile, the air pump is started to inflate the motor shell. Therefore, the air tightness of the motor shell can be judged according to whether bubbles exist in the water in the test pool, and the accuracy of air tightness detection of the motor is improved.

Description

Technical Field

[0001] This utility model relates to the field of motor airtightness testing technology, and in particular to a motor airtightness testing machine. Background Technology

[0002] A geared motor is an integrated unit combining a speed reducer and a motor. This type of integrated unit is also commonly referred to as a geared motor or geared motor. It is typically assembled and supplied as a complete set by a specialized speed reducer manufacturer. Geared motors are widely used in industries such as steel and machinery. The advantages of using geared motors include simplified design and space saving. Following World War II, the rapid development of military electronic equipment spurred the development and production of miniature geared motors and DC geared motors in countries like the United States and the Soviet Union. With the continuous development of the geared motor industry, more and more industries and enterprises are using geared motors, and a number of companies have entered the geared motor industry. However, existing geared motor end cover airtightness testing mechanisms are cumbersome, time-consuming, and inconvenient to install; therefore, they do not meet current needs. To address this, we propose a geared motor end cover airtightness testing mechanism.

[0003] For example, Chinese Patent Publication No. CN212963891U discloses a mechanism for testing the airtightness of end covers of geared motors, relating to the field of end cover airtightness testing technology. This mechanism addresses the problems of existing geared motor end cover airtightness testing mechanisms, which are cumbersome, time-consuming, and inconvenient to install. The mechanism includes support feet at the four corners of the lower end of the operating platform, a compressor bracket at the lower end of the operating platform, a compressor inside the compressor bracket, an air filter at the lower end of the compressor, an airtightness testing chamber at the upper end of the operating platform, an electrical control box on one side of the airtightness testing chamber, a sealed door on the other side of the airtightness testing chamber, a door latch at one end of the sealed door, and a glass baffle inside the airtightness testing chamber.

[0004] Although the above technical solutions have solved the corresponding technical problems, they still have the following drawbacks:

[0005] In the airtightness testing mechanism of the above technical solution, when there is a slight air leak in the motor end shell during the testing process, the air pressure change in the airtightness testing chamber is very small, so it is difficult to detect by the air pressure sensor, thus reducing the accuracy of the test. Utility Model Content

[0006] The purpose of this invention is to provide a motor airtightness testing machine. First, the motor housing to be tested is placed on the bottom sealing seat, and the bottom of the bottom sealing seat is inserted into the annular sealing groove, so that the inner wall of the motor housing is sealed with the inner sealing ring, and the bottom of the motor housing is sealed with the top of the annular sealing ring. Then, the top sealing seat at the bottom of the drive frame is moved down by an electric telescopic rod, and the top of the motor housing is sealed in the same way. Next, the lifting frame is moved down by an electric cylinder, and the sealed motor housing is placed in the water inside the test tank. At the same time, the air pump is turned on to inflate the motor housing with air. The airtightness of the motor housing can be determined by whether there are air bubbles in the water inside the test tank, thus increasing the accuracy of motor airtightness testing.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] An airtightness testing machine for motors, comprising:

[0009] The test pool and the fixed frame fixedly connected to the top of the test pool are provided. A liftable lifting frame is provided on the top of the test pool and at the position corresponding to the fixed frame. A lifting seat for placing the motor housing to be tested is provided at the bottom of the lifting frame.

[0010] In the aforementioned motor airtightness testing machine, an electric cylinder for driving the lifting frame to rise and fall is installed on the top of the fixed frame, and the output end of the electric cylinder is fixedly connected to the top of the lifting frame.

[0011] In the aforementioned motor airtightness testing machine, a bottom sealing seat for sealing the bottom of the motor housing to be tested is installed on the lifting base, and a liftable top sealing seat for sealing the top of the motor housing to be tested is provided on the top of the bottom sealing seat.

[0012] In the aforementioned motor airtightness testing machine, an electric telescopic rod for driving the top sealing seat to rise and fall is fixedly connected to the center of the top of the lifting frame. A drive frame is fixedly connected to the output end of the electric telescopic rod, and the bottom of the drive frame is fixedly connected to the top of the top sealing seat.

[0013] In the aforementioned motor air tightness testing machine, an air pump for testing the air tightness of the motor housing is installed at the center of the top of the top sealing seat.

[0014] In the aforementioned motor airtightness testing machine, an inner sealing ring is fixedly connected to both the bottom of the top sealing seat and the top of the bottom sealing seat.

[0015] In the aforementioned motor airtightness testing machine, an annular sealing groove matching the motor housing is provided at the bottom edge of the top sealing seat and the top edge of the bottom sealing seat.

[0016] In the aforementioned motor airtightness testing machine, an annular sealing ring is provided on the inner wall of the annular sealing groove.

[0017] This utility model has at least the following beneficial effects:

[0018] This invention provides a motor airtightness testing machine. First, the motor housing to be tested is placed on a bottom sealing seat, with the bottom of the bottom sealing seat inserted into an annular sealing groove. This seals the inner wall of the motor housing with the inner sealing ring, and the bottom of the motor housing with the top of the annular sealing ring. Then, an electric telescopic rod moves the top sealing seat at the bottom of the drive frame downwards, sealing the top of the motor housing in the same way. Next, an electric cylinder moves the lifting frame downwards, placing the sealed motor housing in water inside a test tank. Simultaneously, an air pump is turned on to inflate the motor housing. The airtightness of the motor housing can be determined by whether there are air bubbles in the water inside the test tank, thus increasing the accuracy of motor airtightness testing. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the motor airtightness testing machine of this utility model;

[0021] Figure 2 This is a schematic diagram of the lifting seat in the motor airtightness testing machine of this utility model;

[0022] Figure 3 This is a schematic diagram of the bottom sealing seat in the motor airtightness testing machine of this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the bottom sealing seat in the motor airtightness testing machine of this utility model.

[0024] Explanation of icon numbers:

[0025] 1. Test pool; 2. Fixture; 3. Lifting frame; 4. Lifting seat;

[0026] 301. Electric cylinder;

[0027] 401, Bottom sealing seat; 4011, Top sealing seat;

[0028] 402. Electric telescopic pole; 4021. Drive frame;

[0029] 403. Air pump;

[0030] 404, inner sealing ring;

[0031] 405, Annular sealing groove; 4051, Annular sealing ring. Detailed Implementation

[0032] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0033] Please refer to Figures 1 to 4 As shown in the figure, an embodiment of the present invention provides a motor airtightness testing machine, including: a test pool 1 and a fixed frame 2 fixedly connected to the top of the test pool 1. A liftable lifting frame 3 is provided at the top of the test pool 1 and at the position corresponding to the fixed frame 2. A lifting seat 4 for placing the motor housing to be tested is provided at the bottom of the lifting frame 3.

[0034] Please refer to Figures 1 to 4 As shown, an electric cylinder 301 for driving the lifting frame 3 to rise and fall is installed on the top of the fixed frame 2, and the output end of the electric cylinder 301 is fixedly connected to the top of the lifting frame 3. The electric cylinder 301 facilitates the lifting and falling of the lifting frame 3.

[0035] Please refer to Figures 1 to 4 As shown, a bottom sealing seat 401 for sealing the bottom of the motor housing to be tested is installed on the lifting seat 4. A liftable top sealing seat 4011 for sealing the top of the motor housing to be tested is provided on the top of the bottom sealing seat 401. By setting the bottom sealing seat 401 and the top sealing seat 4011, it is convenient to seal the motor housing to be tested.

[0036] Please refer to Figures 1 to 4 As shown, an electric telescopic rod 402 for driving the top sealing seat 4011 to rise and fall is fixedly connected to the center of the top of the lifting frame 3. A drive frame 4021 is fixedly connected to the output end of the electric telescopic rod 402, and the bottom of the drive frame 4021 is fixedly connected to the top of the top sealing seat 4011. The drive frame 4021 is moved by the electric telescopic rod 402, which facilitates the movement of the top sealing seat 4011. Therefore, with the cooperation of the bottom sealing seat 401, the housing of the motor to be tested can be conveniently fixed and sealed.

[0037] Please refer to Figures 1 to 4 As shown, an air pump 403 for testing the air tightness of the motor housing is installed at the center of the top of the top sealing seat 4011.

[0038] Please refer to Figures 1 to 4As shown, an inner sealing ring 404 is fixedly connected to the bottom of the top sealing seat 4011 and the top of the bottom sealing seat 401. The inner sealing ring 404 increases the sealing effect on the motor housing.

[0039] Please refer to Figures 1 to 4 As shown, annular sealing grooves 405 matching the motor housing are provided at the bottom edge of the top sealing seat 4011 and the top edge of the bottom sealing seat 401. Annular sealing rings 4051 are provided on the inner wall of the annular sealing grooves 405. By providing annular sealing grooves 405 and annular sealing rings 4051, the sealing effect of the motor housing under test is improved.

[0040] The working principle of this utility model is as follows: First, the motor housing to be tested is placed on the bottom sealing seat 401, and the bottom of the bottom sealing seat 401 is inserted into the annular sealing groove 405, so that the inner wall of the motor housing is sealed with the inner sealing ring 404, and the bottom of the motor housing is sealed with the top of the annular sealing ring 4051. Then, the top sealing seat 4011 at the bottom of the drive frame 4021 is moved down by the electric telescopic rod 402, and the top of the motor housing is sealed in the same way. Then, the lifting frame 3 is moved down by the electric cylinder 301, and the sealed motor housing is placed in the water inside the test pool 1. At the same time, the air pump 403 is turned on to inflate the motor housing with air. The air tightness of the motor housing can be determined by whether there are air bubbles in the water inside the test pool 1, thus increasing the accuracy of the motor air tightness test.

[0041] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A motor airtightness testing machine, comprising a test tank (1) and a fixing frame (2) fixedly connected to the top of the test tank (1), characterized in that, A liftable lifting frame (3) is provided at the top of the test pool (1) and at the position corresponding to the fixed frame (2), and a lifting seat (4) for placing the motor housing to be tested is provided at the bottom of the lifting frame (3).

2. The motor airtightness testing machine according to claim 1, characterized in that: The top of the fixed frame (2) is equipped with an electric cylinder (301) for driving the lifting frame (3) to rise and fall, and the output end of the electric cylinder (301) is fixedly connected to the top of the lifting frame (3).

3. The motor airtightness testing machine according to claim 2, characterized in that: The lifting seat (4) is equipped with a bottom sealing seat (401) for sealing the bottom of the motor housing to be tested, and the top of the bottom sealing seat (401) is provided with a liftable top sealing seat (4011) for sealing the top of the motor housing to be tested.

4. The motor airtightness testing machine according to claim 3, characterized in that: An electric telescopic rod (402) for driving the top sealing seat (4011) to rise and fall is fixedly connected at the center of the top of the lifting frame (3). A drive frame (4021) is fixedly connected to the output end of the electric telescopic rod (402), and the bottom of the drive frame (4021) is fixedly connected to the top of the top sealing seat (4011).

5. The motor airtightness testing machine according to claim 4, characterized in that: An air pump (403) for testing the air tightness of the motor housing is installed at the center of the top of the top sealing seat (4011).

6. The motor airtightness testing machine according to claim 5, characterized in that: The bottom of the top sealing seat (4011) and the top of the bottom sealing seat (401) are both fixedly connected with an inner sealing ring (404).

7. The motor airtightness testing machine according to claim 6, characterized in that: Both the bottom edge of the top sealing seat (4011) and the top edge of the bottom sealing seat (401) are provided with annular sealing grooves (405) that match the motor housing.

8. The motor airtightness testing machine according to claim 7, characterized in that: An annular sealing ring (4051) is provided on the inner wall of the annular sealing groove (405).

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