A motor stator vacuum testing system

Abstract

This utility model relates to the field of testing, specifically to a vacuum testing system for a motor stator. It includes a support platform with a test chamber and a material preparation chamber at its upper and lower ends, respectively. Two vacuum pumps are mounted on the support platform and connected to the test chamber and material preparation chamber, respectively. A test assembly is installed inside the test chamber. A connecting pipe connects the test chamber and the material preparation chamber. A turntable rotatably mounts inside the material preparation chamber and has a rotating mechanism connected to it. Two telescopic mechanisms are vertically mounted on the upper end of the turntable, symmetrical about the turntable's axis. Each telescopic mechanism has a support column connected to its upper end, with a terminal block on its upper surface. A baffle is mounted on the lower end of the support column, with an airtight ring corresponding to the connecting pipe on its upper end. The material preparation chamber is equipped with a pressure balancing valve and a feed sealing door. This utility model has the advantages of reducing the testing time interval and improving testing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of testing, specifically to a vacuum testing system for motor stator. Background Technology

[0002] A motor stator vacuum testing system is a specialized device for testing the electrical performance of motor stators. Its core feature is testing in a vacuum environment to improve the detection rate of minute defects in the coils. The working principle is as follows: In a vacuum environment (adjustable from 0 to 99 kPa), the insulation layer of the stator coils is more prone to ionization. Under normal conditions, the inert gas in the air inhibits the activity of free electrons, while the increased electron activity after evacuation allows minute defects to be detected through ionization current. Currently, the loading and unloading processes during testing are time-consuming, affecting testing efficiency. Therefore, it is necessary to design a motor stator vacuum testing system that can shorten the testing time interval and improve testing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a motor stator vacuum testing system, which has the advantages of reducing the detection time interval and improving detection efficiency.

[0004] The technical solution adopted is as follows:

[0005] A motor stator vacuum testing system includes a support platform with a test chamber and a material preparation chamber at its upper and lower ends, respectively. Two vacuum pumps are mounted on the support platform and connected to the test chamber and material preparation chamber, respectively. A test assembly is installed inside the test chamber. A connecting pipe connects the test chamber and the material preparation chamber. A turntable is rotatably mounted inside the material preparation chamber, and a rotating mechanism connected to the turntable is installed in the material preparation chamber. Two telescopic mechanisms are vertically mounted on the upper end of the turntable, symmetrical about the axis of the turntable. Each telescopic mechanism has a support column connected to its upper end, and a terminal block is provided on the upper surface of the support column. A baffle is installed at the lower end of the support column, and an airtight ring corresponding to the connecting pipe is installed on the upper end of each baffle. The material preparation chamber is equipped with a pressure balancing valve and a feed sealing door.

[0006] Preferably, both the test chamber and the material preparation chamber are equipped with vacuum gauges.

[0007] Preferably, the telescopic mechanisms are all electrically operated telescopic rods.

[0008] Preferably, the rotating mechanism includes a support shaft, which is rotatably connected to the material preparation chamber and coaxially fixedly connected to the turntable. A driven gear is provided on the side of the support shaft, and a forward and reverse motor is fixedly provided in the material preparation chamber. The forward and reverse motor is provided with a drive gear that meshes with the driven gear.

[0009] Preferably, the pressure balancing valve is an electrically controlled valve.

[0010] Preferably, the outer diameter of the support column is smaller than the inner diameter of the through pipe but larger than four-fifths of the inner diameter of the through pipe.

[0011] Preferably, the upper end of the supporting column is provided with a rounded corner.

[0012] Compared to existing technologies, the advantages are:

[0013] This invention utilizes the reciprocating rotation of a turntable to align two support columns sequentially with the through pipe. The corresponding telescopic mechanism inserts the two support columns into the through pipe in sequence. During this process, the test chamber and the material preparation chamber are kept under vacuum, reducing the vacuuming time of the test chamber. During the test, the air pressure balance valve is used to balance the air pressure between the material preparation chamber and the outside. The material inlet sealing door is opened to feed material onto the upper end of the support columns. After feeding is completed, the material inlet sealing door is closed, and the material preparation chamber is evacuated. This invention has the advantages of reducing the detection time interval and improving detection efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the internal structure of a motor stator vacuum testing system according to this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0016] Figure 3 This is a schematic diagram of the internal front view of a motor stator vacuum testing system according to this utility model.

[0017] Figure 4 This is a side view of the structure of a motor stator vacuum testing system according to this utility model.

[0018] In the diagram: 1. Support platform; 2. Test chamber; 3. Material preparation chamber; 4. Vacuum pump; 5. Vacuum gauge; 6. Through pipe; 7. Turntable; 8. Support shaft; 9. Driven gear; 10. Forward and reverse motor; 11. Drive gear; 12. Telescopic mechanism; 13. Support column; 14. Terminal block; 15. Test assembly; 16. Baffle; 17. Airtight ring; 18. Air pressure balance valve; 19. Feed sealing door. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 4 As shown:

[0020] Example 1: A motor stator vacuum testing system includes a support platform 1. A test chamber 2 and a material preparation chamber 3 are respectively arranged at the upper and lower ends of the support platform 1. Two vacuum pumps 4 are arranged on the support platform 1. The two vacuum pumps 4 are respectively connected to the test chamber 2 and the material preparation chamber 3. The two vacuum pumps 4 are respectively responsible for evacuating the corresponding connected chambers. A test component 15 is arranged in the test chamber 2. The test component 15 is prior art and will not be described in detail here.

[0021] A connecting pipe 6 is provided between the test chamber 2 and the preparation chamber 3, forming a connection between the test chamber 2 and the preparation chamber 3. A turntable 7 is rotatably installed inside the preparation chamber 3. The preparation chamber 3 is equipped with a rotating mechanism connected to the turntable 7. The rotating mechanism drives the turntable 7 to rotate back and forth inside the preparation chamber 3. Two telescopic mechanisms 12 are vertically installed at the upper end of the turntable 7. The two telescopic mechanisms 12 are symmetrical about the axis of the turntable 7. Each telescopic mechanism 12 is connected to a support column 13 at its upper end. The rotating mechanism drives the turntable 7 to rotate 180 degrees inside the preparation chamber 3 and then reverse 180 degrees, so that the two support columns 13 correspond to the connecting pipe 6 vertically.

[0022] The upper end face of the support column 13 is provided with a terminal 14. The terminal 14 is connected to the test component 15 by a power cord. The power cord passes through the support platform 1 between the test chamber 2 and the material preparation chamber 3 and is sealed. The lower end of the support column 13 is provided with a baffle 16. The upper end of each baffle 16 is provided with an airtight ring 17 corresponding to the through pipe 6. After the telescopic mechanism 12 controls the support column 13 to rise, the baffle 16 presses on the support platform 1, and the airtight ring 17 is used to achieve a seal.

[0023] The material preparation chamber 3 is equipped with a pressure balancing valve 18 and a feed sealing door 19. The pressure balancing valve 18 is used to balance the air pressure between the material preparation chamber 3 and the outside environment, and the feed sealing door 19 is used to put the motor stator into the material preparation chamber 3 and take out the motor stator.

[0024] When testing the motor stator, the two motor stators are installed on the upper ends of the two support columns 13 and connected to the terminal blocks 14. After installation, the feed sealing door 19 is closed, and the material preparation chamber 3 and the test chamber 2 are evacuated. The turntable 7 is controlled to rotate so that one of the support columns 13 aligns with the through pipe 6 and the corresponding telescopic mechanism 12 is driven to extend until the baffle 16 presses on the support platform 1. The airtight ring 17 is used to achieve a seal. After testing with the test assembly 15, the corresponding telescopic mechanism 12 retracts to the motor stator and returns to the material preparation chamber 3. The turntable 7 is rotated 180 degrees so that the other support column 13 aligns with the through pipe 6. The above steps are repeated for testing.

[0025] During the testing process, the air pressure in the material preparation chamber 3 is balanced with the external air pressure using an air pressure balancing valve. The inlet sealing door 19 is opened to take out the tested motor stator, and the new motor stator is placed on the upper end of the support column 13 to install the motor stator and connect it to the terminal block 14. After installation, the inlet sealing door 19 is closed, and the material preparation chamber 3 is evacuated. After another test is completed, the corresponding telescopic mechanism 12 retracts to return the motor stator to the material preparation chamber 3, and the turntable 7 rotates 180 degrees to align the support column 13 with the through pipe 6. The steps are repeated to reduce the time for evacuating the test chamber 2 and shorten the test interval.

[0026] Example 2: A motor stator vacuum testing system includes a support platform 1. A test chamber 2 and a material preparation chamber 3 are respectively arranged at the upper and lower ends of the support platform 1. Two vacuum pumps 4 are arranged on the support platform 1, and the two vacuum pumps 4 are respectively connected to the test chamber 2 and the material preparation chamber 3. The two vacuum pumps 4 are responsible for evacuating the corresponding chambers. Vacuum gauges 5 are installed inside the test chamber 2 and the material preparation chamber 3 to monitor the vacuum degree. A test component 15 is arranged inside the test chamber 2. The test component 15 is prior art and will not be described in detail here.

[0027] A connecting pipe 6 is provided between the test chamber 2 and the material preparation chamber 3, which connects the test chamber 2 and the material preparation chamber 3. A turntable 7 is rotatably installed inside the material preparation chamber 3. The material preparation chamber 3 is provided with a rotating mechanism connected to the turntable 7. The rotating mechanism includes a support shaft 8, which is rotatably connected to the material preparation chamber 3 and coaxially fixedly connected to the turntable 7. A driven gear 9 is provided on the side of the support shaft 8. A forward and reverse motor 10 is fixedly installed inside the material preparation chamber 3. The forward and reverse motor 10 is provided with a drive gear 11 that meshes with the driven gear 9.

[0028] The rotating mechanism drives the turntable 7 to reciprocate within the material preparation chamber 3. Two telescopic mechanisms 12 are vertically arranged on the upper end of the turntable 7. Both telescopic mechanisms 12 are electric telescopic rods. The two telescopic mechanisms 12 are symmetrical about the axis of the turntable 7. Each telescopic mechanism 12 is connected to a support column 13 at its upper end. The rotating mechanism drives the turntable 7 to rotate 180 degrees within the material preparation chamber 3 and then reverses 180 degrees, so that the two support columns 13 correspond to the upper and lower parts of the through pipe 6 in sequence. The outer diameter of the support column 13 is smaller than the inner diameter of the through pipe 6 and larger than four-fifths of the inner diameter of the through pipe 6, so as to prevent the motor stator from getting stuck in the gap between the through pipe 6 and the support column 13. The upper end of the support column 13 is provided with rounded corners.

[0029] The upper end face of the support column 13 is provided with a terminal 14. The terminal 14 is connected to the test component 15 by a power cord. The power cord passes through the support platform 1 between the test chamber 2 and the material preparation chamber 3 and is sealed. The lower end of the support column 13 is provided with a baffle 16. The upper end of each baffle 16 is provided with an airtight ring 17 corresponding to the through pipe 6. After the telescopic mechanism 12 controls the support column 13 to rise, the baffle 16 presses on the support platform 1, and the airtight ring 17 is used to achieve a seal.

[0030] The material preparation chamber 3 is equipped with a pressure balancing valve 18 and a feed sealing door 19. The pressure balancing valve 18 is an electrically controlled valve and is used to balance the air pressure between the material preparation chamber 3 and the outside. The feed sealing door 19 is used to put the motor stator into the material preparation chamber 3 and take out the motor stator.

[0031] The working principle is as follows:

[0032] When testing the motor stator, the two motor stators are installed on the upper ends of the two support columns 13 and connected to the terminal blocks 14. After installation, the feed sealing door 19 is closed, and the material preparation chamber 3 and the test chamber 2 are evacuated. The turntable 7 is controlled to rotate so that one of the support columns 13 aligns with the through pipe 6 and the corresponding telescopic mechanism 12 is driven to extend until the baffle 16 presses on the support platform 1. The airtight ring 17 is used to achieve a seal. After testing with the test assembly 15, the corresponding telescopic mechanism 12 retracts to the motor stator and returns to the material preparation chamber 3. The turntable 7 is rotated 180 degrees so that the other support column 13 aligns with the through pipe 6. The above steps are repeated for testing.

[0033] During the testing process, the air pressure in the material preparation chamber 3 is balanced with the external air pressure using an air pressure balancing valve. The inlet sealing door 19 is opened to take out the tested motor stator, and the new motor stator is placed on the upper end of the support column 13 to install the motor stator and connect it to the terminal block 14. After installation, the inlet sealing door 19 is closed, and the material preparation chamber 3 is evacuated. After another test is completed, the corresponding telescopic mechanism 12 retracts to return the motor stator to the material preparation chamber 3, and the turntable 7 rotates 180 degrees to align the support column 13 with the through pipe 6. The steps are repeated to reduce the time for evacuating the test chamber 2 and shorten the test interval.

[0034] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A motor stator vacuum testing system, characterized in that: The system includes a support platform (1), with a test chamber (2) and a material preparation chamber (3) at its upper and lower ends, respectively. Two vacuum pumps (4) are mounted on the support platform (1), connected to the test chamber (2) and the material preparation chamber (3), respectively. A test assembly (15) is installed inside the test chamber (2). A connecting pipe (6) connects the test chamber (2) and the material preparation chamber (3). A turntable (7) is rotatably mounted inside the material preparation chamber (3), and the material preparation chamber (3) is equipped with a rotating mechanism connected to the turntable (7). Two telescopic mechanisms (12) are vertically arranged at the upper end of the turntable (7). The two telescopic mechanisms (12) are symmetrical about the axis of the turntable (7). Each telescopic mechanism (12) is connected to a support column (13). A terminal block (14) is provided on the upper surface of the support column (13). A baffle (16) is provided at the lower end of the support column (13). An airtight ring (17) corresponding to the through pipe (6) is provided at the upper end of the baffle (16). The material preparation chamber (3) is equipped with an air pressure balance valve (18) and a material inlet sealing door (19).

2. The motor stator vacuum testing system as described in claim 1, characterized in that: Vacuum gauges (5) are installed inside both the test chamber (2) and the material preparation chamber (3).

3. The motor stator vacuum testing system as described in claim 1, characterized in that: All of the telescopic mechanisms (12) are electric telescopic rods.

4. The motor stator vacuum testing system as described in claim 1, characterized in that: The rotating mechanism includes a support shaft (8), which is rotatably connected to the material preparation chamber (3). The support shaft (8) is coaxially fixedly connected to the turntable (7). A driven gear (9) is provided on the side of the support shaft (8). A forward and reverse motor (10) is fixedly provided in the material preparation chamber (3). The forward and reverse motor (10) is provided with a drive gear (11) that meshes with the driven gear (9).

5. The motor stator vacuum testing system as described in claim 1, characterized in that: The pressure balancing valve (18) is an electrically controlled valve.

6. The motor stator vacuum testing system as described in claim 1, characterized in that: The outer diameter of the support column (13) is smaller than the inner diameter of the through pipe (6) and larger than four-fifths of the inner diameter of the through pipe (6).

7. The motor stator vacuum testing system as described in claim 6, characterized in that: The upper end of the supporting column (13) is provided with a rounded corner.

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