A circuit breaker wobbler contact finger pressure testing device

Abstract

The application relates to the technical field of finger pressure testing, and provides a circuit breaker wrench finger pressure testing device, which comprises two connecting plates, one end of each of the two connecting plates is provided with a mounting disc, the other end is provided with a clamping module, a circular groove is formed in the mounting disc, a fixing rod and a sleeve are arranged in the circular groove, a fitting module is arranged on the sleeve, a testing head module is arranged on one side of the mounting disc close to the clamping module, one end of the fixing rod extends out of the sleeve and is provided with a distance measuring module, and a moving module is arranged at the bottom of the connecting plate; the testing head module is arranged, a plurality of testing heads with different sizes are arranged on the mounting disc, the fitting module is used to select a testing head suitable for the wrench, the use range of the wrench finger pressure testing is improved, the distance measuring module is arranged, the inner diameter of the wrench is preliminarily detected before the pressure testing, and the workload of manual measurement is reduced.

Description

Technical Field

[0001] This invention relates to the field of finger pressure testing technology, specifically to a device for testing the finger pressure of a circuit breaker's perforated contact. Background Technology

[0002] The plum blossom contact is a high-voltage, high-current sliding power connector with a multi-fin parallel structure. It is widely used as a main conductive circuit connector in equipment such as disconnect switches, switchgear, and substation trolley switches. It features multiple contact points, good conductivity, and low contact resistance. The contact pressure between each finger and the contact conductor in the plum blossom contact is provided by several switching springs. When the spring pressure is insufficient, the contact area between the plum blossom contact and the stationary contact decreases, reducing the contact pressure and increasing the contact resistance. This increased contact resistance leads to increased heat generation between the contacts, resulting in localized overheating. Sustained localized overheating not only causes ablation and oxidation of the contact material but may also lead to spring breakage. If this situation is not detected and addressed promptly, it may directly cause the switchgear to explode, resulting in a serious safety accident. Therefore, regular inspection of plum blossom contacts is necessary.

[0003] In existing technologies, most circuit breakers are directly tested using a finger pressure tester. Before testing, the inner diameter of the L-shaped contact needs to be measured with a vernier caliper, and the test head of the instrument needs to be manually aligned with the L-shaped contact before being horizontally inserted into it. This process is time-consuming and labor-intensive. However, it is difficult to ensure that the test head and the center of the L-shaped contact are aligned during insertion. If tilted, it will lead to uneven pressure readings. Furthermore, it is difficult for operators to fix the test head after insertion, as its own weight can easily affect the L-shaped contact, resulting in higher pressure at the bottom and lower pressure at the top, making it difficult to ensure stable and uniform pressure distribution. For L-shaped contacts of different specifications, the test head needs to be replaced, making the testing process cumbersome.

[0004] Therefore, the present invention provides a circuit breaker sprite contact finger pressure testing device. Summary of the Invention

[0005] This invention provides a circuit breaker sprite contact finger pressure testing device, which solves the problems existing in the background art by setting up modules such as a fitting module and a ranging module.

[0006] The technical solution of this invention is as follows:

[0007] A circuit breaker sprite contact finger pressure testing device includes: two connecting plates, one end of each connecting plate having a mounting plate and the other end having a clamping module; the mounting plate has a circular groove, and a fixing rod and a sleeve are disposed within the circular groove; the sleeve is slidably connected to the circular groove; the fixing rod is located within the sleeve; a fitting module is mounted on the sleeve; a test head module is mounted on the side of the mounting plate near the clamping module, and the test head module is located outside the fitting module; one end of the fixing rod extends out of the sleeve and is provided with a ranging module, and the ranging module is located on the side of the fitting module near the clamping module; a moving module is disposed at the bottom of the connecting plates.

[0008] The fitting module includes a fixed disk fixedly connected to a sleeve. A limiting disk is rotatably connected to one side of the fixed disk. Two sliding grooves are symmetrically opened on the side of the fixed disk facing the limiting disk, and a moving rod is slidably connected through the sliding grooves. Two arc-shaped grooves are symmetrically opened on the surface of the limiting disk, and the distance from the arc-shaped grooves to the center of the limiting disk gradually increases from one end to the other. A limiting pin is fixedly connected to one side of the moving rod, and each of the limiting pins passes through the respective arc-shaped grooves. A gear is fixedly connected to one side of the limiting disk. The gear is rotatably connected to the sleeve, and a motor is installed on the sleeve to drive the gear. A fitting block is fixedly connected to the end of the moving rod away from the center of the fixed disk. A cantilever beam sensor is installed on the fitting block. Square grooves are opened on both sides of the fitting block. Magnets are slidably connected in the two square grooves. Springs are installed between the opposite sides of the two magnets and the square grooves.

[0009] The test head module includes multiple test heads mounted on the mounting plate. Each test head consists of two semi-cylinders. The radii of the multiple test heads increase sequentially and they are nested together. One end of each test head near the mounting plate has a slot I. The number of slots I is the same as that of the fitting blocks, and their positions correspond to those of the fitting blocks. The test head has square slots II on both sides of the slot I. Electromagnets are installed in the square slots II.

[0010] A fixing module is provided between the installation disk and the test head, and the fixing module is used to fix the test head.

[0011] Preferably, the ranging module includes a fixed cylinder fixedly connected to one end of a fixed rod. The fixed cylinder has an opening at one end near the fitting module. Multiple threaded cylinders are evenly arranged inside the fixed cylinder, with one end of each threaded cylinder facing the center of the fixed cylinder. A threaded rod is threadedly connected inside each threaded cylinder. One end of the threaded rod passes through the fixed cylinder and extends to the outside of the fixed cylinder. The threaded rod is slidably connected to the fixed cylinder, and a baffle is fixedly connected to the end extending out of the fixed cylinder. A displacement sensor for monitoring the movement distance of the baffle is installed inside the threaded rod.

[0012] Preferably, a bevel gear is fixedly connected to one end of the threaded rod near the fixed rod, a bevel gear is fixedly connected to the outside of the fixed rod, the bevel gear meshes with the bevel gear, a gear two is rotatably connected to the outside of the fixed rod and coaxially connected to the bevel gear, and a motor two for driving the gear two to rotate is installed on the fixed rod.

[0013] Preferably, the movable module includes two support plates, with a sliding rod and a threaded rod connected between the two support plates. The two ends of the sliding rod are fixedly connected to the two support plates, and the two ends of the threaded rod are rotatably connected to the two support plates. A movable plate is provided between the two support plates, and the movable plate is threadedly connected to the threaded rod and slidably connected to the sliding rod. An electric telescopic rod is installed on the top of the movable plate, and the output end of the electric telescopic rod is connected to a connecting plate. Universal wheels are installed at the bottom of the support plates, and a motor is installed on the support plates to drive the threaded rod to rotate.

[0014] Preferably, a hollow block is fixedly connected to the top of the electric telescopic rod, a slider is slidably connected inside the hollow block, the slider is fixedly connected to the connecting plate, and a spring is installed between the slider and the hollow block.

[0015] Preferably, the clamping module includes a connecting post disposed on opposite sides of the connecting plate. One end of the connecting post is fixedly connected to the connecting plate, and the other end of the connecting post is fixedly connected to a clamping block. Arc-shaped stops are rotatably connected to the upper and lower sides of the clamping block. The arc-shaped stops are connected to the clamping block through a torsion spring. Two gears are rotatably connected to one side of the clamping block and coaxially connected to the two arc-shaped stops. A timing belt is mounted on one of the gears, and the timing belt meshes with the other gear.

[0016] Preferably, the fixing module includes a square groove three and an empty groove two respectively opened on the opposite sides of the mounting plate and the test head. A locking block is slidably connected in the square groove three, and a spring three is installed between the locking block and one side of the square groove three. The empty groove two communicates with the square groove two. One end of the locking block extends out of the square groove three and is fixedly connected to a locking connector. One end of the locking block extends into the empty groove two, and the locking connector is located in the square groove two.

[0017] Preferably, a fixing plate is fixedly connected to the side of the mounting plate away from the test head. An electric push rod is mounted on the fixing plate. One end of the sleeve extends from inside the mounting plate to the fixing plate, and a slider is fixedly connected to the end of the sleeve near the fixing plate. The slider is slidably connected to the fixing plate, and the output end of the electric push rod is fixedly connected to the slider.

[0018] Preferably, the other end of the fixing rod extends from the sleeve to the fixing plate and is fixedly connected to the fixing plate.

[0019] Preferably, two connecting plates are slidably connected to a slider three on opposite sides, an electric push rod two is installed on the connecting plate to push the slider three to move, a telescopic block is provided between the slider three and the mounting plate, the two ends of the telescopic block are fixedly connected to the slider three and the mounting plate respectively, and a scissor linkage is installed between the two slider three and the mounting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. This invention, by setting a test head module, installs multiple test heads of different sizes on the mounting plate, and selects the appropriate test head for the plum blossom contact through the fitting module, thereby expanding the application range of plum blossom contact finger pressure testing. It eliminates the need for manual replacement of test heads, reduces manual testing time, and improves testing efficiency.

[0022] 2. The present invention provides support for the fitting module and the test head through the moving module and the connecting plate, thereby avoiding the influence of the test head's own weight on the test pressure during manual testing.

[0023] 3. By setting up a ranging module, the inner diameter of the plum blossom contact can be preliminarily detected before the test pressure. This allows for the selection of a suitable test head in conjunction with the fitting module, reducing the workload of manual measurement and improving the accuracy of measurement and the efficiency of testing. Attached Figure Description

[0024] Figure 1 This is a perspective view of the pressure testing device of the present invention;

[0025] Figure 2 This is a perspective view of the pressure testing device of the present invention from another angle;

[0026] Figure 3 This is the present invention. Figure 1 A magnified view of part A in the image;

[0027] Figure 4 This is the present invention. Figure 2 A magnified view of part B in the image;

[0028] Figure 5 This is a three-dimensional cross-sectional view of the structure on the mounting plate of the present invention;

[0029] Figure 6 This is the present invention. Figure 5 A magnified view of part C;

[0030] Figure 7 This is the present invention. Figure 5 A magnified view of part D;

[0031] Figure 8 This is a perspective view of the fitting module and the ranging module of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure on the fixed disk of the present invention;

[0033] Figure 10 This is a perspective view of the fixing module of the present invention;

[0034] Figure 11 This is the present invention. Figure 10 A magnified view of part E in the image;

[0035] Figure 12 This is a perspective view showing the connection between the test head module and the fitting module of the present invention;

[0036] Figure 13 This is the present invention. Figure 12 A partial 3D view.

[0037] In the picture:

[0038] 1. Connecting plate; 2. Mounting plate; 21. Circular groove; 22. Fixing rod; 23. Sleeve; 24. Fixing plate; 25. Electric push rod one; 26. Slider two; 27. Slider three; 28. Electric push rod two; 29. ​​Telescopic block; 210. Scissor linkage; 3. Clamping module; 31. Connecting column; 32. Clamping block; 33. Arc-shaped stop block; 34. Synchronous belt; 35. Gear three; 4. Fitting module; 41. Fixing plate; 42. Limiting plate; 43. Slide groove; 44. Moving rod; 45. Arc-shaped groove; 46. Limiting pin; 47. Gear one; 48. Motor one; 49. Fitting block; 410. Cantilever beam sensor; 411. Square groove one; 412. Magnet; 413. Spring one; 5. Test Head Module; 51. Test Head; 52. Empty Slot 1; 53. Square Slot 2; 54. Electromagnet; 6. Distance Measuring Module; 61. Fixed Cylinder; 62. Threaded Cylinder; 63. Threaded Rod 1; 64. Baffle; 65. Displacement Sensor; 66. Bevel Gear 1; 67. Bevel Gear 2; 68. Gear 2; 69. Motor 2; 7. Moving Module; 71. Support Plate; 72. Slide Rod; 73. Threaded Rod 2; 74. Moving Plate; 75. Electric Telescopic Rod; 76. Universal Wheel; 77. Hollow Block; 78. Slider 1; 79. Spring 2; 710. Motor 3; 8. Fixed Module; 81. Square Slot 3; 82. Empty Slot 2; 83. Locking Block; 84. Spring 3; 85. Locking Connector. Detailed Implementation

[0039] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0040] Example 1:

[0041] like Figure 1 , Figure 2 , Figure 5As shown, the present invention provides a circuit breaker plum blossom contact finger pressure testing device, comprising: two connecting plates 1, one end of the two connecting plates 1 is provided with a mounting plate 2, and the other end is provided with a clamping module 3. A circular groove 21 is opened in the mounting plate 2, and a fixing rod 22 and a sleeve 23 are provided in the circular groove 21. The sleeve 23 is slidably connected to the circular groove 21. The fixing rod 22 is located inside the sleeve 23. An interlocking module 4 is installed on the sleeve 23. A test head module 5 is installed on the side of the mounting plate 2 near the clamping module 3. The test head module 5 is located outside the interlocking module 4. One end of the fixing rod 22 extends out of the sleeve 23 and is provided with a ranging module 6. The ranging module 6 is located on the side of the interlocking module 4 near the clamping module 3. A moving module 7 is provided at the bottom of the connecting plate 1.

[0042] like Figure 5 , Figure 7 , Figure 8 , Figure 9 As shown, the fitting module 4 includes a fixed plate 41 fixedly connected to the sleeve 23. A limiting plate 42 is rotatably connected to one side of the fixed plate 41. Two sliding grooves 43 are symmetrically opened on the side of the fixed plate 41 facing the limiting plate 42, and a moving rod 44 is slidably connected through the sliding grooves 43. Two arc-shaped grooves 45 are symmetrically opened on the surface of the limiting plate 42, and the distance from the arc-shaped grooves 45 to the center of the limiting plate 42 gradually increases from one end to the other. A limiting pin 46 is fixedly connected to one side of the moving rod 44, and each limiting pin 46 passes through each arc-shaped groove 45. Inside 5, a gear 47 is fixedly connected to one side of the limiting disk 42. The gear 47 is rotatably connected to the sleeve 23, and a motor 48 that drives the gear 47 to rotate is installed on the sleeve 23. A fitting block 49 is fixedly connected to one end of the moving rod 44 away from the center of the fixed disk 41. A cantilever beam sensor 410 is installed on the fitting block 49. Square slots 411 are opened on both sides of the fitting block 49. Magnets 412 are slidably connected in the two square slots 411. Springs 413 are installed between the opposite sides of the two magnets 412 and the square slots 411.

[0043] like Figure 7 , Figure 12 , Figure 13 As shown, the test head module 5 includes multiple test heads 51 mounted on the mounting plate 2. Each test head 51 consists of two semi-cylinders. The radii of the multiple test heads 51 increase sequentially and they are nested together. One end of the test head 51 near the mounting plate 2 has a slot 52. The number of slots 52 is the same as that of the fitting block 49, and their positions correspond to those of the fitting block 49. Square slots 53 are formed on both sides of the slots 52. Electromagnets 54 are installed in the square slots 53.

[0044] The motor 48 drives the gear 47 to rotate, which in turn drives the limiting plate 42 to rotate. Because the limiting pin 46 in the arc groove 45 can only move along the direction of the slide groove 43, and the distance from the arc groove 45 to the center of the limiting plate 42 gradually increases from one end to the other, the limiting pin 46 is pushed by the arc groove 45 and moves from one end of the arc groove 45 to the other end, thereby driving the moving rod 44 to slide out of the fixed plate 41 along the slide groove 43, and then driving the fitting block 49 to move in the empty slot 52 of the multiple test heads 51. When it moves to the test head 51 that is suitable for the plum blossom contact, the motor 48 is stopped, and the electromagnet 54 in the square slot 2 53 of the test head 51 is energized, so that it attracts the magnet 412 in the square slot 411 of the fitting block 49 into the square slot 2 53, thereby fixing the fitting block 49 and the test head 51. Then, the fitting module 4 selects the test head 51 that is suitable for the plum blossom contact.

[0045] A fixing module 8 is provided between the installation disk 2 and the test head 51. The fixing module 8 is used to fix the test head 51.

[0046] like Figures 10-13 As shown, the fixing module 8 includes a square groove 3 81 and an empty groove 2 82 respectively opened on opposite sides of the mounting plate 2 and the test head 51. A locking block 83 is slidably connected in the square groove 3 81, and a spring 3 84 is installed between the locking block 83 and one side of the square groove 3 81. The empty groove 2 82 communicates with the square groove 2 53. One end of the locking block 83 extends out of the square groove 3 81 and is fixedly connected to a locking connector 85. One end of the locking block 83 extends into the empty groove 2 82, and the locking connector 85 is located in the square groove 2 53.

[0047] One end of the locking block 83 on the mounting plate 2 extends into the empty slot 2 82, and the locking connector 85 at one end of the locking block 83 extends into the square slot 2 53 to lock the test head 51, thereby fixing the test head 51 on the mounting plate 2. When the fitting block 49 enters the square slot 2 53, the fitting block 49 pushes the locking connector 85 in the square slot 2 53, causing one end of the locking block 83 and the locking connector 85 to move towards the empty slot 2 82, and causing the locking block 83 to press the spring 3 84 in the square slot 3 81, thereby releasing the locking block 83 from fixing the test head 51. When the fitting block 49 is moved, the locking block 83 and the locking connector 85 can be removed from the empty slot 2 82.

[0048] A fixing plate 24 is fixedly connected to the side of the mounting plate 2 away from the test head 51. An electric push rod 25 is installed on the fixing plate 24. One end of the sleeve 23 extends from the inside of the mounting plate 2 to the fixing plate 24, and a slider 26 is fixedly connected to the end of the sleeve 23 near the fixing plate 24. The slider 26 is slidably connected to the fixing plate 24, and the output end of the electric push rod 25 is fixedly connected to the slider 26.

[0049] like Figure 1 , Figure 2 , Figure 3As shown, during the pressure test, the electric push rod 25 is activated. The electric push rod 25 pushes the slider 26 and the sleeve 23 towards the direction of the plum blossom contact, causing the fitting module 4 on the sleeve 23 to drive the test head 51 into the plum blossom contact. The plum blossom contact exerts pressure on the test head 51 through the outer spring, causing the two test heads 51 to undergo slight deformation and move closer to each other. Since the test head 51 is fixed on the fitting block 49, and the fitting block 49 is equipped with a cantilever beam sensor 410, one end of the cantilever beam sensor 410 is fixed on the moving rod 44, and the other end is fixed on the fitting block 49, the slight deformation generated by the test head 51 is transmitted to the cantilever beam sensor 410 through the fitting block 49, causing the resistance of the strain gauge in the cantilever beam sensor 410 to change, thereby changing the voltage in the cantilever beam sensor 410, thus realizing the pressure test of the plum blossom contact.

[0050] It should be noted that when the interlocking block 49 moves the outer test head 51, the moving rod 44 passes through the slot 52 on the inner test head 51 to avoid the inner test head 51 blocking the moving rod 44. Furthermore, during pressure testing, the electric push rod 25 drives the part of the test head 51 without the slot 52 to contact the Phillips head contactor to avoid insufficient contact between the Phillips head contactor and the test head 51.

[0051] By setting up the test head module 5, multiple test heads 51 of different sizes are installed on the mounting plate 2, and the appropriate test head 51 for the plum blossom contact is selected through the fitting module 4. This improves the application range of plum blossom contact finger pressure testing, eliminates the need for manual replacement of the test head 51, reduces manual testing time, and improves testing efficiency.

[0052] It should be noted that after the test is completed, the fitting module 4 is restored to its original position by the electric push rod 25, and the locking connector 85 at one end of the locking block 83 enters the empty slot 82 through its arc surface. Then, the electromagnet 54 is de-energized, and the magnet 412 returns to its original position under the elastic action of the spring 413. At the same time, the locking connector 85 loses the obstruction of the magnet 412 and enters the square slot 81 under the elastic action of the spring 84 on one side of the locking block 83, thus completing the fixation of the test head 51.

[0053] like Figures 5-6 As shown, the ranging module 6 includes a fixed cylinder 61 fixedly connected to one end of the fixed rod 22. The fixed cylinder 61 has an opening at one end near the fitting module 4. Multiple threaded cylinders 62 are evenly arranged inside the fixed cylinder 61, with one end of each threaded cylinder 62 facing the center of the fixed cylinder 61. A threaded rod 63 is threadedly connected inside the threaded cylinder 62. One end of the threaded rod 63 passes through the fixed cylinder 61 and extends to the outside of the fixed cylinder 61. The threaded rod 63 is slidably connected to the fixed cylinder 61, and a baffle 64 is fixedly connected to one end of the threaded rod 63. A displacement sensor 65 for monitoring the movement distance of the baffle 64 is installed inside the threaded rod 63.

[0054] A bevel gear 66 is fixedly connected to one end of the threaded rod 63 near the fixed rod 22. A bevel gear 67 is fixedly connected to the outside of the fixed rod 22. The bevel gear 67 meshes with the bevel gear 66. A gear 68 is rotatably connected to the outside of the fixed rod 22 and coaxially connected with the bevel gear 67. A motor 69 that drives the gear 68 to rotate is installed on the fixed rod 22.

[0055] Before inserting the fitting module 4 and the test head 51 into the plum blossom contact, the ranging module 6 is moved into the plum blossom contact and the motor 69 is started. The motor 69 drives the bevel gear 67 to rotate through the gear 68. The bevel gear 67 drives the multiple bevel gears 66 meshing with the bevel gear 67 to rotate, which in turn drives the threaded cylinder 62 to rotate. Since the threaded rod 63 is threadedly connected to the threaded cylinder 62 and slidably connected to the fixed cylinder 61, when the threaded cylinder 62 rotates, it drives the threaded rod 63 to move outward of the fixed cylinder 61, so that the baffle 64 at one end of the threaded rod 63 approaches the contact finger of the plum blossom contact. The inner diameter of the plum blossom contact is measured by monitoring the distance moved by the baffle 64 through the displacement sensor 65, and then the appropriate test head 51 is selected according to the size of the inner diameter.

[0056] By setting the ranging module 6, the inner diameter of the plum blossom contact is initially detected before the test pressure, thereby cooperating with the fitting module 4 to select a suitable test head 51, and detecting it through the displacement sensor 65, which reduces the workload of manual measurement and improves the accuracy of measurement and the efficiency of testing.

[0057] like Figures 1-2 As shown, the movable module 7 includes two support plates 71, with a slide rod 72 and a threaded rod 73 connected between the two support plates 71. The two ends of the slide rod 72 are fixedly connected to the two support plates 71, and the two ends of the threaded rod 73 are rotatably connected to the two support plates 71. A movable plate 74 is provided between the two support plates 71. The movable plate 74 is threadedly connected to the threaded rod 73 and slidably connected to the slide rod 72. An electric telescopic rod 75 is installed on the top of the movable plate 74, and the output end of the electric telescopic rod 75 is connected to the connecting plate 1. A universal wheel 76 is installed at the bottom of the support plate 71, and a motor 710 for driving the threaded rod 73 to rotate is installed on the support plate 71.

[0058] The threads at both ends of the threaded rod 73, with the center as the boundary, have opposite directions. The two support plates 71 are threadedly connected to the two ends of the threaded rod 73 and slidably connected to the slide rod 72. The starting motor 710 drives the threaded rod 73 to rotate. The threaded rod 73 drives the two support plates 71 to move closer to each other, so that the distance between the two support plates 71 and the connecting plate 1 is adapted to the diameter of the plum blossom contact.

[0059] like Figure 4As shown, the clamping module 3 includes a connecting post 31 disposed on opposite sides of the connecting plate 1. One end of the connecting post 31 is fixedly connected to the connecting plate 1, and the other end of the connecting post 31 is fixedly connected to a clamping block 32. Arc-shaped stops 33 are rotatably connected to the upper and lower sides of the clamping block 32. The arc-shaped stops 33 are connected to the clamping block 32 through a torsion spring. Two gears 35 are rotatably connected to one side of the clamping block 32 and coaxially connected to the two arc-shaped stops 33. A timing belt 34 is installed on one of the gears 35, and the timing belt 34 meshes with the other gear 35.

[0060] When the two connecting plates 1 approach the plum blossom contact, the rear shell of the plum blossom contact is clamped by the arc-shaped stop 33. When the rear shell of the plum blossom contact is not located at the center of the two connecting plates 1, the support plate 71 is obstructed and adjusted by moving the universal wheel 76 so that the rear shell of the plum blossom contact is located at the center of the two connecting plates 1. Because the two arc-shaped stop 33 are coaxially connected to the gear 35, when one gear 35 rotates, the other gear 35 can rotate synchronously through the synchronous belt 34, so that the plum blossom contact is restricted to the center of the two arc-shaped stop 33.

[0061] It should be noted that the arc-shaped stop 33 is connected to the clamp 32 by a torsion spring. After the test is completed, the arc-shaped stop 33 returns to its original shape by the elastic force of the torsion spring.

[0062] A hollow block 77 is fixedly connected to the top of the electric telescopic rod 75. A slider 78 is slidably connected inside the hollow block 77. The slider 78 is fixedly connected to the connecting plate 1. A spring 79 is installed between the slider 78 and the hollow block 77.

[0063] The connecting plate 1 can move up and down through slider 78 and hollow block 77, and can be reset and buffered through spring 79.

[0064] Because the two arc-shaped stops 33 rotate at the same angle, when the arc-shaped stops 33 are not aligned with the rear shell of the plum blossom contact, the connecting plate 1 is resisted by the arc-shaped stops 33 and moves up and down through the slider 78 and the hollow block 77, so that the rear shell of the plum blossom contact is located at the center of the arc-shaped stops 33.

[0065] By aligning the rear housing of the plum blossom contact, the mounting plate 2, which is centered on the two connecting plates 1, can be aligned with the plum blossom contact, thus avoiding inaccurate test pressure caused by misalignment.

[0066] Furthermore, the moving module 7 and the connecting plate 1 provide support for the fitting module 4 and the test head 51, thus avoiding the influence of the test head 51's own weight on the test pressure during manual testing.

[0067] The other end of the fixing rod 22 extends from the sleeve 23 to the fixing plate 24 and is fixedly connected to the fixing plate 24.

[0068] like Figure 1 As shown, two connecting plates 1 are slidably connected to each other on one side by a slider 27. An electric push rod 28 is installed on the connecting plate 1 to push the slider 27 to move. A telescopic block 29 is provided between the slider 27 and the mounting plate 2. The two ends of the telescopic block 29 are fixedly connected to the slider 27 and the mounting plate 2 respectively. A scissor rod 210 is installed between the two sliders 27 and the mounting plate 2.

[0069] The electric push rod 28 can push the slider 27 to move, thereby moving the mounting plate 2 and adjusting the distance between the mounting plate 2 and the plum blossom contact. When the two connecting plates 1 are close to each other, the scissor rod 210 keeps the mounting plate 2 at the center of the two connecting plates 1 and in a straight line with the two arc-shaped blocks 33, so that the fitting module 4 at the center of the mounting plate 2 can be aligned with the plum blossom contact. The mounting plate 2 is supported by the telescopic block 29, and the telescopic block 29 shortens by the same amount when the two connecting plates 1 are close to each other.

[0070] Working principle:

[0071] Before starting the pressure test, push the device in front of the circuit breaker and position the two connecting plates 1 on both sides of the plum blossom contact. Based on the height of the plum blossom contact, move the electric telescopic rod 15 to move the connecting plates 1 to the position of the plum blossom contact. Based on the size of the plum blossom contact, bring the two connecting plates 1 closer together so that the arc-shaped stop 33 on the clamping module 3 clamps the rear housing of the plum blossom contact, ensuring that the mounting plate 2, the plum blossom contact, and the rear housing are in a straight line. Then lock the caster wheel 76 to prevent the device from moving. After fixing the device, activate the electric push rod 28 to push the mounting plate 2 towards the plum blossom contact. The contact moves, allowing the ranging module 6 to insert into the plum blossom contact. Then, the displacement sensor 65 is driven to move outward to measure the inner diameter of the plum blossom contact. Based on the inner diameter of the plum blossom contact, a suitable test head 51 is selected, fixing the fitting block 49 to the test head 51. The fixing of the test head 51 to the mounting plate 2 is then released. Then, the electric push rod 25 is driven to push the sleeve 23 through the slider 26, causing the fitting module 4 on the sleeve 23 to drive the test head 51 to insert between the plum blossom contact and the ranging module 6, performing a pressure test on the plum blossom contact. After repeated testing, the pressure test results are recorded.

[0072] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A circuit breaker waffle contact finger pressure testing device, comprising: Two connecting plates (1), characterized in that: one end of the two connecting plates (1) is provided with a mounting disc (2), the other end is provided with a clamping module (3), a circular groove (21) is formed in the mounting disc (2), a fixed rod (22) and a sleeve (23) are arranged in the circular groove (21), the sleeve (23) is in sliding connection with the circular groove (21), the fixed rod (22) is located in the sleeve (23), a fitting module (4) is installed on the sleeve (23), a test head module (5) is installed on one side of the mounting disc (2) close to the clamping module (3), the test head module (5) is located outside the fitting module (4), one end of the fixed rod (22) extends out of the sleeve (23) and is provided with a distance measuring module (6), the distance measuring module (6) is located on one side of the fitting module (4) close to the clamping module (3), and a moving module (7) is arranged at the bottom of the connecting plate (1). The fitting module (4) comprises a fixed disc (41) fixedly connected to the sleeve (23), a limiting disc (42) rotatably connected to one side of the fixed disc (41), two symmetrical sliding grooves (43) formed on one side of the fixed disc (41) facing the limiting disc (42), and a moving rod (44) in sliding connection with the sliding grooves (43), two symmetrical arc-shaped grooves (45) formed on the surface of the limiting disc (42), wherein the distance from the arc-shaped grooves (45) to the center of the limiting disc (42) gradually increases from one end to the other end, a limiting pin (46) fixedly connected to one side of the moving rod (44), each limiting pin (46) penetrating into each arc-shaped groove (45), a gear one (47) fixedly connected to one side of the limiting disc (42), the gear one (47) being in rotational connection with the sleeve (23), a motor one (48) installed on the sleeve (23) and driving the gear one (47) to rotate, an embedded block (49) fixedly connected to one end of the moving rod (44) away from the center of the fixed disc (41), a cantilever beam sensor (410) installed on the embedded block (49), a square groove one (411) formed on both sides of the embedded block (49), two magnets (412) in sliding connection with the square groove one (411), and a spring one (413) installed between each magnet (412) and the square groove one (411). The test head module (5) comprises a plurality of test heads (51) installed on the mounting disc (2), each test head (51) being composed of two semicylinders, the radii of the plurality of test heads (51) gradually increasing and being sequentially sleeved, an empty groove one (52) formed at one end of each test head (51) close to the mounting disc (2), the number of the empty groove one (52) being the same as that of the embedded block (49) and the position of the empty groove one (52) corresponding to that of the embedded block (49), a square groove two (53) formed on both sides of each test head (51), and an electromagnet (54) installed in the square groove two (53). The mounting disc (2) and the test head (51) are provided with a fixing module (8) for fixing the test head (51).

2. The circuit breaker waffle contact finger pressure testing device of claim 1, wherein: The ranging module (6) includes a fixed cylinder (61) fixedly connected to one end of a fixed rod (22). The fixed cylinder (61) has an opening at one end near the fitting module (4). Multiple threaded cylinders (62) are evenly arranged inside the fixed cylinder (61), and one end of each threaded cylinder (62) faces the center of the fixed cylinder (61). A threaded rod (63) is threadedly connected inside the threaded cylinder (62). One end of the threaded rod (63) passes through the fixed cylinder (61) and extends to the outside of the fixed cylinder (61). The threaded rod (63) is slidably connected to the fixed cylinder (61), and a baffle (64) is fixedly connected to one end extending out of the fixed cylinder (61). A displacement sensor (65) for monitoring the movement distance of the baffle (64) is installed inside the threaded rod (63).

3. The circuit breaker wrench contact finger pressure testing device of claim 2, wherein: A bevel gear (66) is fixedly connected to one end of the threaded rod (63) near the fixed rod (22). A bevel gear (67) is fixedly connected to the outside of the fixed rod (22). The bevel gear (67) meshes with the bevel gear (66). A gear (68) coaxially connected to the bevel gear (67) is rotatably connected to the outside of the fixed rod (22). A motor (69) that drives the gear (68) to rotate is installed on the fixed rod (22).

4. The circuit breaker wrench contact finger pressure testing device of claim 1, wherein: The moving module (7) includes two support plates (71), and a sliding rod (72) and a threaded rod (73) are connected between the two support plates (71). The two ends of the sliding rod (72) are fixedly connected to the two support plates (71), and the two ends of the threaded rod (73) are rotatably connected to the two support plates (71). A moving plate (74) is provided between the two support plates (71). The moving plate (74) is threadedly connected to the threaded rod (73) and slidably connected to the sliding rod (72). An electric telescopic rod (75) is installed on the top of the moving plate (74). The output end of the electric telescopic rod (75) is connected to the connecting plate (1). A universal wheel (76) is installed at the bottom of the support plate (71). A motor (710) for driving the threaded rod (73) to rotate is installed on the support plate (71).

5. The circuit breaker wrench contact finger pressure testing device of claim 4, wherein: The top of the electric telescopic rod (75) is fixedly connected to a hollow block (77), and a slider (78) is slidably connected inside the hollow block (77). The slider (78) is fixedly connected to the connecting plate (1), and a spring (79) is installed between the slider (78) and the hollow block (77).

6. The circuit breaker wrench contact finger pressure testing device of claim 1, wherein: The clamping module (3) includes a connecting post (31) arranged on the opposite side of the connecting plate (1). One end of the connecting post (31) is fixedly connected to the connecting plate (1), and the other end of the connecting post (31) is fixedly connected to a clamping block (32). The clamping block (32) is rotatably connected to arc-shaped stops (33) on its upper and lower sides. The arc-shaped stops (33) are connected to the clamping block (32) through a torsion spring. One side of the clamping block (32) is rotatably connected to two gears (35) coaxially connected to the two arc-shaped stops (33). One of the gears (35) is equipped with a timing belt (34), and the timing belt (34) meshes with the other gear (35).

7. The circuit breaker wrench contact finger pressure testing device of claim 1, wherein: The fixing module (8) includes a square groove three (81) and an empty groove two (82) respectively opened on the opposite sides of the mounting plate (2) and the test head (51). A locking block (83) is slidably connected in the square groove three (81), and a spring three (84) is installed between the locking block (83) and one side of the square groove three (81). The empty groove two (82) communicates with the square groove two (53). One end of the locking block (83) extends out of the square groove three (81) and is fixedly connected to a locking connector (85). One end of the locking block (83) extends into the empty groove two (82), and the locking connector (85) is located in the square groove two (53).

8. The circuit breaker wrench contact finger pressure testing device of claim 1, wherein: A fixing plate (24) is fixedly connected to the side of the mounting plate (2) away from the test head (51). An electric push rod (25) is installed on the fixing plate (24). One end of the sleeve (23) extends from inside the mounting plate (2) to the fixing plate (24). A slider (26) is fixedly connected to the end of the sleeve (23) near the fixing plate (24). The slider (26) is slidably connected to the fixing plate (24). The output end of the electric push rod (25) is fixedly connected to the slider (26).

9. The circuit breaker wrench head contact finger pressure testing device of claim 8, wherein: The other end of the fixing rod (22) extends from the sleeve (23) to the fixing plate (24) and is fixedly connected to the fixing plate (24).

10. The circuit breaker wye contact finger pressure testing device of claim 1, wherein: Two connecting plates (1) are slidably connected to a slider three (27) on opposite sides. An electric push rod two (28) for pushing the slider three (27) to move is installed on the connecting plate (1). A telescopic block (29) is provided between the slider three (27) and the mounting plate (2). The two ends of the telescopic block (29) are fixedly connected to the slider three (27) and the mounting plate (2) respectively. A scissor rod (210) is installed between the two slider three (27) and the mounting plate (2).

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