Withstand voltage testing device for generator stator

Abstract

The utility model discloses a withstand voltage test device for a generator stator. The withstand voltage test device comprises a test copper head device, a test copper head pressing device, a test copper head position adjusting device, a stator withstand voltage tester, a tool plate jacking device, a shell and a knob switch, guide rails are arranged on the front side and the rear side in the shell, and proximity switches are arranged on the outer guide rails. The test copper head pressing device, the stator withstand voltage tester, the tool plate jacking device, the knob switch and the proximity switch are connected with an external controller through wires. The copper measuring head position adjusting device comprises a front-back adjusting sliding block, an adjusting lead screw, a lead screw nut, a locking nut and a sliding groove. According to the utility model, the position of the test copper head pressing device can be adjusted through the adjusting screw rod and the locking nut of the test copper head position adjusting device, so that the position of the test copper head device can be adjusted, and generator stators of different models can be detected; the stator withstand voltage tester is controlled by an external PLC controller to automatically detect the generator stator through the test copper head.

Description

Technical Field

[0001] This utility model relates to the field of generator stator technology, specifically to a withstand voltage testing device for generator stators. Background Technology

[0002] The generator stator is the stationary part of the motor and one of the key components of the generator. Its main components include the iron core, frame, and coils. The generator electronic withstand voltage test is an important test used to verify the insulation strength of the generator stator windings, mainly including DC withstand voltage tests and AC withstand voltage tests. These tests are crucial to ensuring the safe operation of the generator. However, in the current generator manufacturing process, stator withstand voltage testing requires manual clamping. Manual clamping, in the field of mechanical automation, refers to the process of manually operating fixtures to fix and position the workpiece. However, manual clamping relies on the skill and experience of the workers, and the machine tool must be stationary during the clamping process, resulting in relatively low testing efficiency. Furthermore, due to inconsistencies in human skill and experience, the accuracy and consistency of clamping are difficult to guarantee, leading to inaccurate test results. Utility Model Content

[0003] The purpose of this invention is to provide a generator stator withstand voltage testing device that is highly efficient, accurate, easy to operate, and saves time and effort. This device addresses the technical problem that manual clamping is used in stator withstand voltage testing, which results in relatively low testing efficiency and difficulty in guaranteeing the accuracy and consistency of the tests.

[0004] To solve the above technical problems, the solution adopted by this utility model is as follows:

[0005] A withstand voltage testing device for a generator stator includes a copper head testing device, a copper head pressing device, a copper head position adjusting device, a stator withstand voltage tester, a tooling plate lifting device, a housing, and a rotary switch. The top and bottom of the copper head pressing device are connected to the copper head position adjusting device. The copper head position adjusting device is fixedly installed inside the top of the housing. The tooling plate lifting device is fixedly installed inside the bottom of the housing, directly below the copper head position adjusting device, and lifts the generator stator placed on the tooling plate. The stator withstand voltage tester is installed on one side of the bottom of the housing and connected to the copper head testing device via a wire. The rotary switch is fixedly installed at the top of the housing. Guide rails are provided on the front and rear sides inside the housing, and a proximity switch is provided at the middle of the outer guide rail. The copper head pressing device, stator withstand voltage tester, tooling plate lifting device, rotary switch, and proximity switch are connected to an external controller via wires.

[0006] The copper head position adjustment device includes a front and rear adjustment slider, an adjustment screw, a locking nut, a screw nut, and a sliding groove; the screw nut is fixedly installed on the top of the cylinder; the sliding groove is fixedly installed on the inner top of the housing; the front and rear adjustment slider is fixedly installed on both sides of the upper end of the copper head pressing device and matches the sliding groove; the adjustment screw, the locking nut, and the screw nut are mutually matched;

[0007] The entire system is automatically controlled by an external PLC controller and powered by an external power supply. Rotating the adjusting screw adjusts the position of the test copper head pressing device, thereby adjusting the position of the lower end of the test copper head pressing device. This allows the device to test different stators. After adjusting the cylinder position, rotating the locking nut secures the adjusting screw to prevent loosening due to vibration or other external forces during use. Driven by the test copper head pressing device, the test copper head presses down, contacting the generator stator. The stator withstand voltage tester uses the test copper head device to test the generator stator, and the detected data is transmitted to the external PLC controller for qualification. Two rotary switches are provided, controlling automatic and manual operation respectively. The automatic operation switch is activated during batch production testing, while the manual operation switch is activated when the position of the test copper head device needs adjustment, without testing. When activated, the tooling plate can be manually released to initially adjust the position of the test copper head device, controlling the pressing and return of the test copper head pressing device for position confirmation.

[0008] Furthermore, the copper head testing device includes a copper head, a copper head connecting rod, and a copper head fixing plate. The copper head connecting rod is installed at the lower end of the copper head pressing device, with its top end fixedly connected to the copper head fixing plate and its bottom end fixedly connected to the copper head. The copper head fixing plate is connected to the stator withstand voltage tester via wires. When the copper head pressing device presses down, it drives the copper head connecting rod down, thereby causing the copper head to move downward and contact the generator stator. The wires of the stator withstand voltage tester are connected to the copper head fixing plate above the copper head connecting rod. The stator withstand voltage tester's wires detect the generator stator through the copper head, and the detected data is transmitted to an external PLC controller for judgment of whether it is qualified.

[0009] Furthermore, the test copper head pressing device includes a cylinder and a fixed plate; the top end of the cylinder is connected to the adjusting screw, and the bottom end is fixedly connected to the fixed plate; the test copper head connecting rod is mounted on the fixed plate. The cylinder drives the fixed rod to press down and return to its original position. During testing, the cylinder pressing down drives the fixed plate to move downward, which in turn drives the test copper head connecting rod to press down, so that the test copper head contacts the generator stator.

[0010] Furthermore, the test copper head device is equipped with a connecting rod compression spring and a retaining ring; the connecting rod compression spring is sleeved on the lower end of the test copper head connecting rod; the fixing plate has a hole; the retaining ring is located in the hole of the fixing plate and is connected to the upper middle end of the test copper head connecting rod. When the cylinder presses down to drive the test copper head to test the generator stator, the test copper head, through the connecting rod compression spring sleeved on the outside of the test copper head connecting rod, plays a buffering role, preventing the test copper head from directly pressing down and contacting the generator stator, thus avoiding excessive external force that could damage the generator stator. At the same time, the retaining ring can prevent the test copper head connecting rod from detaching from the fixing plate.

[0011] Furthermore, the copper measuring head position adjustment device includes a lead screw nut disc mounting plate; the disc mounting plate is fixedly installed at the top of the housing; the sliding groove is fixedly installed on one side of the disc mounting plate. The cylinder is connected to the lead screw nut and adjusting lead screw fixedly installed at the top, and the upper end is slidably connected to the sliding groove installed on one side of the disc mounting plate through the front and rear adjusting sliders on both sides, which facilitates the adjustment of the cylinder position.

[0012] Furthermore, a pressing and fixing cylinder is provided in the middle of the disc mounting plate. When the workpiece reaches directly below the pressing and fixing cylinder, the cylinder presses down, extends into the middle of the generator stator, and presses down on the tooling plate to prevent the tooling plate from moving on the tooling plate lifting device. The pressing and fixing cylinder can further limit and fix the generator stator, facilitating inspection.

[0013] Furthermore, the tooling plate lifting device includes a cylinder fixing plate, a fixing plate connecting rod, a pallet lifting plate, a linear bearing cylinder, a pallet lifting guide rod, and a rotating pallet. The bottom end of the linear bearing cylinder is fixedly connected to the bottom end of the inner wall of the outer shell, the top end is connected to the cylinder fixing plate, and the output end passes through the cylinder fixing plate and connects to the pallet lifting guide rod. The bottom end of the fixing plate connecting rod is connected to the cylinder fixing plate, and the top end is connected to the pallet lifting plate. The pallet lifting guide rod passes through the pallet lifting plate and is fixedly connected to the rotating pallet. A limiting sliding rod is provided at the upper end of the pallet lifting plate. The rotating pallet is located in the middle of the two guide rails. The linear bearing cylinder is controlled to rise by an external PLC controller, which drives the pallet lifting guide rod to rise, causing the pallet lifting plate at the top of the pallet lifting guide rod to rise, thus raising the workpiece. At the same time, the limiting sliding rods at both ends of the pallet lifting plate can limit the displacement of the rotating pallet. The rotating pallet can rotate the workpiece, which facilitates the testing of different points of the workpiece by the testing copper head, increasing the accuracy of the test.

[0014] The working principle of this utility model is as follows:

[0015] In operation, the generator stator is placed on the fixture plate. The equipment is started via an external PLC controller, and the fixture plate enters the housing via the guide rail. After the proximity switch detects the workpiece, the PLC controller controls the linear bearing cylinder of the fixture lifting device to rise, lifting the workpiece on the fixture plate. Simultaneously, the cylinder presses down, causing the test copper head to contact the generator stator. The stator withstand voltage tester tests the generator stator through the test copper head, and the test data is transmitted to the external PLC controller for judgment of whether it is qualified. After the test is completed, the linear bearing cylinder descends, causing the fixture plate to fall back onto the guide rail and be conveyed out of the equipment. To adjust the position of the test copper head, the device is manually operated via a knob switch. In manual mode, the position of the cylinder can be changed by manually controlling the adjusting screw, thereby adjusting the position of the test copper head. This allows for the testing of different models of generator stators. After adjusting the cylinder position, the position of the adjusting screw is fixed by locking the nut to prevent the cylinder from moving due to vibration or other external forces during operation.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model allows for the adjustment of the position of the copper head pressing device by adjusting the screw and locking nut of the copper head position adjustment device, thereby adjusting the position of the copper head device. It can test different models of generator stators. The entire system is controlled by an external PLC controller to make contact between the copper head and the generator stator, and the entire process is automated, improving testing efficiency and reducing the time and labor intensity of manual adjustment.

[0018] 2. This utility model uses a connecting rod compression spring to buffer the generator stator when the cylinder presses down to drive the test copper head to test it, thus avoiding damage to the generator stator due to direct contact. The retaining spring prevents the test copper head connecting rod from accidentally detaching from the fixing plate, enhancing safety during the test. The setting of the downward pressing fixing cylinder further limits and fixes the generator stator, ensuring stability and reliability during the test. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This is a side view of the structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the copper measuring head position adjustment device of this utility model;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0023] In the diagram: 1. Copper head testing device; 11. Copper head testing device; 12. Copper head testing device connecting rod; 13. Copper head testing device fixing plate; 14. Connecting rod compression spring; 15. Snap ring; 2. Copper head testing device pressing down; 21. Cylinder; 22. Fixing plate; 3. Copper head position adjustment device; 31. Front and rear adjustment slider; 32. Adjusting screw; 33. Locking nut; 34. Screw nut; 35. Disc mounting plate; 36. Slide groove; 37. Pressing and fixing cylinder; 4. Stator withstand voltage tester; 5. Tooling plate lifting device; 51. Cylinder fixing plate; 52. Fixing plate connecting rod; 53. Pallet lifting plate; 54. Linear bearing cylinder; 55. Pallet lifting guide rod; 56. Rotating pallet; 6. Housing; 7. Knob switch; 8. Guide rail; 9. Proximity switch. Detailed Implementation

[0024] 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.

[0025] The following is a detailed description of the withstand voltage testing device for generator stators according to the present invention, with reference to the accompanying drawings: Example

[0026] A withstand voltage testing device for a generator stator includes a copper head testing device 1, a copper head pressing device 2, a copper head position adjusting device 3, a stator withstand voltage tester 4, a tooling plate lifting device 5, a housing 6, and a rotary switch 7. The top end of the copper head pressing device 2 is connected to the copper head position adjusting device 3, and the bottom end is connected to the copper head testing device 1. The copper head position adjusting device 3 is fixedly installed inside the top of the housing 6. The tooling plate lifting device 5 is fixedly installed inside the bottom of the housing 6, directly below the copper head position adjusting device 3. The stator withstand voltage tester 4 is installed on one side of the bottom of the housing 6 and connected to the copper head testing device 1 via a wire. The rotary switch 7 is fixedly installed at the top of the housing 6. Guide rails 8 are provided on the front and rear sides inside the housing 6, and a proximity switch 9 is provided at the middle of the outer guide rails 8. The copper head pressing device 2, the stator withstand voltage tester 4, the tooling plate lifting device 5, the rotary switch 7, and the proximity switch 9 are connected to an external controller via wires.

[0027] The copper head position adjustment device 3 includes a front and rear adjustment slider 31, an adjustment screw 32, a locking nut 33, a screw nut, and a slide groove 36; the screw nut 34 is fixedly installed on the top of the cylinder 21; the slide groove 36 is fixedly installed on the inner top of the outer shell 6; the front and rear adjustment slider 31 is fixedly installed on both sides of the upper end of the copper head pressing device 2 and matches the slide groove 36; the adjustment screw 32, the locking nut 33, and the screw nut 34 are mutually matched.

[0028] The working principle of this embodiment is as follows:

[0029] In operation, the generator stator is placed on the fixture plate. The equipment is started via an external PLC controller. The fixture plate enters the housing 6 via guide rail 8. After the proximity switch 9 detects the workpiece, it controls the fixture lifting device 5 to rise, lifting the workpiece from the fixture plate. Simultaneously, the copper head pressing device 2 presses down, causing the copper head device 1 to contact the generator stator. The stator withstand voltage tester 4 tests the generator stator via the copper head device 1. The test data is transmitted to the controller for judgment of whether it is qualified. After the test is completed, the fixture lifting device 5 is lowered, causing the fixture plate to fall back onto the guide rail 8. The device is operated manually via rotary switch 7. In manual operation, the adjusting screw 32 is manually rotated to move the screw nut, thereby causing the test copper head pressing device 2 to slide within the slide groove 36 via the front and rear adjusting slider 31, changing the position of the test copper head pressing device 2 and thus adjusting the position of the test copper head device 1. This allows for the testing of different models of generator stators. After adjusting the position of the test copper head pressing device 2, the position of the adjusting screw 32 is fixed by locking nut 33 to prevent the test copper head pressing device 2 from moving due to vibration or other external forces during operation, which could affect the test results. Example

[0030] The difference from Embodiment 1 is that the copper head testing device 1 includes a copper head 11, a copper head connecting rod 12, and a copper head fixing plate 13; the copper head connecting rod 12 is installed at the lower end of the copper head pressing device 2, and its top end is fixedly connected to the copper head fixing plate 13, and its bottom end is fixedly connected to the copper head 11; the copper head fixing plate 13 is connected to the stator withstand voltage tester 4 through a wire; the copper head pressing device 2 includes a cylinder 21 and a fixing plate 22; the top end of the cylinder 21 is connected to the adjusting screw 32, and its bottom end is fixedly connected to the fixing plate 22; the copper head connecting rod 12 is installed on the fixing plate 22; the copper head testing device 1 is provided with a connecting rod compression spring 14 and a retaining spring 15; the connecting rod compression spring 14 is sleeved on the lower end of the copper head connecting rod 12; the fixing plate 22 has a hole; the retaining spring 15 is located in the hole of the fixing plate 22 and is connected to the copper head connecting rod 12. When cylinder 21 presses down, it drives the test copper head 11 to press down, causing the test copper head 11 to move downward and contact the generator stator. When the stator withstand voltage tester 4 tests the generator stator through the test copper head 11, the test copper head 11 is buffered by the connecting rod compression spring 14 sleeved outside the test copper head connecting rod 12, which prevents the test copper head 11 from directly pressing down and contacting the generator stator, thus avoiding the phenomenon of excessive external force damaging the generator stator. At the same time, the retaining spring 15 can prevent the test copper head connecting rod 12 from detaching from the fixing plate 22.

[0031] The working principle of this embodiment is the same as that of Embodiment 1. Example

[0032] The difference from Embodiment 2 is that the copper measuring head position adjustment device 3 includes a disc mounting plate 35; the disc mounting plate 35 is fixedly installed at the top inside the outer casing 6; the sliding groove 36 is fixedly installed on one side of the disc mounting plate 35; and a pressing and fixing cylinder 37 is provided in the middle of the disc mounting plate 35. The cylinder 21 is connected to the top end by a screw nut 34 and an adjusting screw 32, and its upper end is slidably connected to the sliding groove 36 installed on one side of the disc mounting plate 35 by front and rear adjusting sliders 31 on both sides, which facilitates the adjustment of the position of the cylinder 21. When the workpiece reaches directly below the pressing and fixing cylinder 37, the pressing and fixing cylinder 37 presses down, extends into the middle of the generator stator, and presses down the tooling plate to prevent the tooling plate from moving on the tooling plate lifting device 5. The pressing and fixing cylinder 37 can further limit and fix the generator stator, which is convenient for testing.

[0033] The working principle of this embodiment is the same as that of embodiment 2. Example

[0034] The difference from Embodiment 3 is that the tooling plate lifting device 5 includes a cylinder fixing plate 51, a fixing plate connecting rod 52, a pallet lifting plate 53, a linear bearing cylinder 54, a pallet lifting guide rod 55, and a rotating pallet 56; the bottom end of the linear bearing cylinder 54 is fixedly connected to the bottom end of the inner wall of the outer shell 6, the top end is connected to the cylinder fixing plate 51, and the output end passes through the cylinder fixing plate 51 and is connected to the pallet lifting guide rod 55; the bottom end of the fixing plate connecting rod 52 is connected to the cylinder fixing plate 51, and the top end is connected to the pallet lifting plate 53; the pallet lifting guide rod 55 passes through the pallet lifting plate 53 and is fixedly connected to the rotating pallet 56; the rotating pallet 56 is located in the middle of the two guide rails 8. The upper end of the pallet lifting plate 53 is equipped with a limiting sliding rod, which controls the linear bearing cylinder 54 to rise, thereby driving the pallet lifting guide rod 55 to rise, and causing the pallet lifting plate 53 at the top of the pallet lifting guide rod 55 to rise, raising the workpiece. At the same time, the limiting sliding rods at both ends of the pallet lifting plate 53 can limit the displacement of the rotating pallet 56 as it rises. The rotating pallet 56 can rotate the workpiece, which facilitates the testing copper head 11 to test different points of the workpiece and increases the accuracy of the test.

[0035] The working principle of this embodiment is the same as that of embodiment 3.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A withstand voltage testing device for generator stators, characterized in that: The device includes a copper head testing device (1), a copper head pressing device (2), a copper head position adjusting device (3), a stator withstand voltage tester (4), a tooling plate lifting device (5), a housing (6), and a rotary switch (7). The top end of the copper head pressing device (2) is connected to the copper head position adjusting device (3), and the bottom end is connected to the copper head testing device (1). The copper head position adjusting device (3) is fixedly installed inside the top of the housing (6). The tooling plate lifting device (5) is fixedly installed inside the bottom of the housing (6) and is located at the copper head position adjusting device (7). The stator withstand voltage tester (4) is installed on the bottom side of the outer shell (6) and connected to the test copper head device (1) via a wire; the rotary switch (7) is fixedly installed on the top of the outer shell (6); the front and rear sides of the inner shell (6) are provided with guide rails (8), and a proximity switch (9) is provided at the middle of the outer guide rail (8); the test copper head pressing device (2), the stator withstand voltage tester (4), the tooling plate lifting device (5), the rotary switch (7) and the proximity switch (9) are connected to an external controller via wires; The copper head pressing device (2) includes a cylinder (21) and a fixed plate (22); the copper head position adjustment device (3) includes a front and rear adjusting slider (31), an adjusting screw (32), a locking nut (33), a screw nut (34), and a slide groove (36); the top end of the cylinder (21) is connected to the adjusting screw (32), and the bottom end is fixedly connected to the fixed plate (22); the copper head connecting rod (12) is installed on the fixed plate (22); the screw nut (34) is fixedly installed on the top end of the cylinder (21); the slide groove (36) is fixedly installed on the inner top end of the outer shell (6); the front and rear adjusting slider (31) The test copper head pressing device (2) is fixedly installed on both sides of the upper end and matches the slide groove (36); the adjusting screw (32), the locking nut (33), and the screw nut (34) match each other; the test copper head device (1) includes a test copper head (11), a test copper head connecting rod (12), and a test copper head fixing plate (13); the test copper head connecting rod (12) is installed at the lower end of the test copper head pressing device (2), and its top end is fixedly connected to the test copper head fixing plate (13), and its bottom end is fixedly connected to the test copper head (11); the test copper head fixing plate (13) is connected to the stator withstand voltage tester (4) through a wire.

2. The withstand voltage testing device for a generator stator according to claim 1, characterized in that: The copper test head device (1) is provided with a connecting rod compression spring (14) and a retaining ring (15); the connecting rod compression spring (14) is sleeved on the lower end of the copper test head connecting rod (12); the fixing plate (22) has a hole; the retaining ring (15) is located in the hole of the fixing plate (22) and is connected to the middle part of the copper test head connecting rod (12).

3. The withstand voltage testing device for a generator stator according to claim 1, characterized in that: The copper measuring head position adjustment device (3) includes a disc mounting plate (35); the disc mounting plate (35) is fixedly installed at the top of the inside of the outer shell (6); the slide groove (36) is fixedly installed on one side of the disc mounting plate (35).

4. The withstand voltage testing device for a generator stator according to claim 3, characterized in that: The disc mounting plate (35) is provided with a pressing and fixing cylinder (37) in the middle.

5. The withstand voltage testing device for a generator stator according to claim 1, characterized in that: The tooling plate lifting device (5) includes a cylinder fixing plate (51), a fixing plate connecting rod (52), a pallet lifting plate (53), a linear bearing cylinder (54), a pallet lifting guide rod (55), and a rotating pallet (56). The bottom end of the linear bearing cylinder (54) is fixedly connected to the bottom end of the inner wall of the outer shell (6), the top end is connected to the cylinder fixing plate (51), and the output end passes through the cylinder fixing plate (51) and is connected to the pallet lifting guide rod (55). The bottom end of the fixing plate connecting rod (52) is connected to the cylinder fixing plate (51), and the top end is connected to the pallet lifting plate (53). The pallet lifting guide rod (55) passes through the pallet lifting plate (53) and is fixedly connected to the rotating pallet (56). The rotating pallet (56) is located in the middle of the two guide rails (8).

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