Automatic detection claw for relay

Abstract

The application relates to a relay automatic detection claw device, which comprises a relay automatic detection instrument and a claw device body, the relay automatic detection instrument is arranged in the claw device body, the claw device body comprises a driving device and a chuck device, the driving device comprises a driving handle and a driving frame, the driving handle is arranged on the top of the driving frame, a plurality of wedge blocks and sliding grooves are arranged on the lower part of the driving frame, the chuck device is located in the driving frame and abuts against the driving frame, a conductive contact device is arranged in the chuck device, a conductive contact claw device is arranged on the conductive contact device, and the conductive contact device and the conductive contact claw device are electrically connected with the relay automatic detection instrument. Through the cooperation of the driving device, the chuck device, the conductive contact device, the conductive contact claw device and the relay automatic detection instrument, the problems of low efficiency, low precision, complex operation, inconvenient data filing and hidden safety hazards in manual contact type measurement are effectively solved.

Description

Technical Field

[0001] This invention belongs to the field of power measurement technology, and specifically relates to an automatic relay detection gripper. Background Technology

[0002] Relays play an important role in circuits, including automatic control, relay protection, and switching circuits. Due to their good isolation, simple structure, and convenient operation, as well as their ability to handle large tasks with small components, they are widely used in automated control systems, aerospace systems, and nuclear power systems. They are fundamental circuit components in my country's industrial development.

[0003] During the implementation and application of relays, routine testing of their usage and performance parameters is required periodically. These parameters include current and resistance. Traditional testing methods typically involve manual, handheld contact measurements. The operator must remove the relay from the equipment and connect external wires to test it, usually using a multimeter to measure each contact individually. The results are then determined and recorded using continuity indicator lights and multimeter readings. Manual contact measurements suffer from low efficiency, low accuracy, complex operation, and inconvenient data archiving. Furthermore, the circuit must be energized during testing, posing a safety hazard to workers and compromising the reliability and cost of testing. Traditional testing methods can no longer meet the demands of modern automated industrial development, which requires high precision, high efficiency, and high automation. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic relay testing gripper to address the shortcomings of existing technologies. Through the coordinated design of a drive device, a gripper device, a conductive contact device, a conductive claw device, and an automatic relay calibrator, it effectively solves the problems of low efficiency, low accuracy, complex operation, inconvenient data archiving, and safety hazards associated with manual contact measurement.

[0005] The technical solution adopted in this invention:

[0006] An automatic relay testing gripper includes an automatic relay calibrator and a gripper body. The automatic relay calibrator is disposed inside the gripper body. The gripper body includes a driving device and a clamping device. The driving device includes a driving handle and a driving frame. The driving handle is disposed at the top of the driving frame. The lower part of the driving frame is provided with several wedge-shaped blocks and a sliding groove. The clamping device is located inside the driving frame and abuts against it. The clamping device has a conductive contact device inside, and a conductive claw device is disposed on the conductive contact device. The conductive contact device and the conductive claw device are electrically connected to the automatic relay calibrator.

[0007] Furthermore, the chuck device includes a mounting bracket, a first tension spring, and a second tension spring. The two mounting brackets are arranged opposite each other on both sides of the drive frame and abut against it. The two ends of the first tension spring are fixedly connected to the mounting bracket and the drive frame, respectively. The top and bottom of the mounting bracket are respectively provided with a chuck handle and a chuck housing. The top and bottom of the chuck housing are respectively provided with a cable compartment cover and a chuck seat. The front and rear sides of the chuck seat are provided with chuck guide frames. The outer side of the chuck guide frames is provided with chuck clamping plates. The chuck clamping plates are provided with grooves corresponding to the wedge blocks on the drive frame. The second tension spring passes through the chuck seat and the chuck guide frames and is fixedly connected to the front and rear chuck clamping plates. When the drive frame moves downward, the wedge blocks on the drive frame insert into the grooves of the chuck clamping plates, which can lift the front and rear chuck clamping plates.

[0008] Furthermore, the conductive contact device includes a guide plate and a conductive contact. The guide plate is disposed on the top of the chuck seat and has a plurality of wire pressing seats. The conductive contact passes through the chuck seat, the guide plate, and the wire pressing seats and is slidably connected to the wire pressing seats. A first compression spring is sleeved on the conductive contact, one end of which is fixedly connected to the wire pressing seat. The conductive contact is electrically connected to the automatic relay calibrator.

[0009] Furthermore, the conductive claw device includes a plurality of conductive claws. A drive pin is connected to the upper end of each conductive claw, and a second compression spring is sleeved on the end of the drive pin. One end of the second compression spring is fixedly connected to the guide plate. A hinge shaft is passed through the middle of each conductive claw. Both ends of the hinge shaft are fixedly connected to a chuck seat. A drive shaft is provided on the chuck seat. The drive shaft is located above the hinge shaft, with its middle part abutting against the conductive claw and both ends slidably connected to the sliding groove on the drive frame. A conductive claw contact is detachably provided at the bottom of each conductive claw. The conductive claw contact is electrically connected to the automatic relay calibrator. When the drive frame moves downward, the sliding groove squeezes the drive shaft, causing the conductive claw to rotate around the hinge shaft, thereby opening the conductive claw.

[0010] Furthermore, the conductive claw has a sheet-like structure, including a long conductive claw and a short conductive claw, and both the long conductive claw and the short conductive claw are provided with an insulating sleeve.

[0011] Furthermore, the long conductive claw has a length of 100-120mm, and its lower end forms an angle of 150-160 degrees with its upper end; the short conductive claw has a length of 80-100mm.

[0012] Furthermore, the conductive claw has a hook-shaped contact, is made of phosphor bronze, has a 45-60 degree chamfer at the front end, and has an end length of 4-7 mm and an end width of 0.8-1.5 mm.

[0013] Furthermore, an insulating sleeve is fitted onto the conductive contact.

[0014] Furthermore, the top of the guide plate is provided with a cover plate, which is located above the pressure seat.

[0015] Furthermore, the claw body is made of resin material.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention, through the coordinated design of a drive device, a clamping device, a conductive contact device, a conductive claw device, and an automatic relay calibrator, effectively solves the problems of low efficiency, low accuracy, complex operation, inconvenient data archiving, and safety hazards associated with manual contact measurement.

[0018] 1. This invention targets general-purpose AC / DC relays and designs a matching measuring claw, which allows each relay to be tested to be automatically tested by directly gripping each contact on the equipment without removing it from the equipment. Compared with traditional manual testing, this saves the time of disassembling from the equipment, makes the testing operation convenient, improves testing efficiency, and reduces the cycle testing cost for enterprises.

[0019] 2. This invention enables all contacts of a relay to be connected to the interface of an automatic relay calibrator simultaneously. By configuring the automatic relay calibrator, one-click measurement and data storage of the relay can be achieved, meeting the requirements of highly automated industrial development.

[0020] 3. This invention only requires one gripping of the relay to be tested, and the gripper is far away from each contact of the relay. All contact parts are made of insulating material. Compared with traditional manual contact measurement, this avoids electric shock accidents caused by direct contact with the circuit or contacts, thus ensuring the personal safety of workers.

[0021] 4. The conductive claw contact in this invention is designed to be detachable, which facilitates disassembly, grinding, and replacement of the conductive claw contact, reducing the overall cost of consumable parts and thus reducing the overall testing cost.

[0022] 5. The conductive claw of the present invention is made of phosphor bronze, and the width of the conductive claw is within a reasonable space to maximize the contact area, with low surface roughness and low contact resistance.

[0023] 6. The claw body of the present invention is made of resin, which is lightweight and has high strength, saving manufacturing costs compared with other materials. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2This is a schematic diagram of the chuck device structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the conductive contact device of the present invention. Figure 1 ;

[0027] Figure 4 This is a schematic diagram of the conductive contact device of the present invention. Figure 2 ;

[0028] Figure 5 This is a schematic diagram of the conductive claw device of the present invention. Figure 1 ;

[0029] Figure 6 This is a schematic diagram of the conductive claw device of the present invention. Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the chuck guide frame structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the clamping plate structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the drive frame structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the chuck seat structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the guide plate structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the chuck housing structure of the present invention;

[0036] In the diagram: 1. Drive handle; 2. Drive frame; 3. Mounting bracket; 4. Chuck handle; 5. Chuck seat; 6. Conductive contact; 7. Drive shaft; 8. Short conductive claw; 9. Long conductive claw; 10. Guide plate; 11. Chuck housing; 12. Wire clamping seat; 13. Wire compartment cover; 14. Chuck guide frame; 15. Chuck clamping plate; 16. Second tension spring; 17. Insulating cylinder; 18. Conductive claw contact; 19. Hinge shaft; 20. Drive pin; 21. Cover plate; 22. First tension spring; 23. Second compression spring; 24. First compression spring. Detailed Implementation

[0037] To better understand the technical content of this invention, specific embodiments are provided below, and the invention will be further described in conjunction with the accompanying drawings.

[0038] See Figures 1 to 12This invention provides an automatic relay testing gripper, comprising an automatic relay calibrator and a gripper body. The automatic relay calibrator is disposed inside the gripper body, and the gripper body enables the gripping of relays. The gripper body includes a driving device and a chuck device. The driving device includes a driving handle 1 and a driving frame 2. The driving handle 1 has a T-shaped structure and is disposed on the top of the driving frame 2, connected to the driving frame 2 using hexagonal screws. The lower part of the driving frame 2 is provided with several wedge-shaped blocks and sliding grooves. The lower front and rear sides of the driving frame 2 are provided with two... There is a wedge-shaped block and two sliding grooves. The two sliding grooves are symmetrically arranged in a figure-eight shape, forming an angle of 20-30° with the vertical direction. The clamping device is located inside the drive frame 2 and abuts against it. The clamping device is equipped with a conductive contact device inside, and a conductive claw device is provided on the conductive contact device. The downward movement of the drive frame 2 drives the clamping device and the conductive claw device to move through the wedge-shaped block and the sliding groove, thereby gripping the relay. The conductive contact device and the conductive claw device are electrically connected to the automatic relay calibrator to realize one-button measurement and data storage of the relay.

[0039] Specifically, the chuck device includes a mounting bracket 3, a first tension spring 22, and a second tension spring 16. The mounting bracket 3 is a rectangular structure, and the two mounting brackets 3 are arranged opposite each other on both sides inside the drive frame 2 and abut against it. The two ends of the first tension spring 22 are fixedly connected to the mounting bracket 3 and the drive frame 2, respectively. When the drive frame 2 is subjected to force, it generates a downward relative movement with the mounting bracket 3. When the force is released, the first tension spring 22 drives the drive frame 2 to return to its original position. The top and bottom of the mounting bracket 3 are respectively provided with a chuck handle 4 and a chuck housing 11. Both the chuck handle 4 and the chuck housing 11 are connected to the mounting bracket 3 with hexagonal screws. The top and bottom of the chuck housing 11 are respectively provided with a wire compartment cover plate 13 and a chuck seat 5. The wire compartment cover plate 13 is a rectangular sheet structure and is connected to the top of the chuck housing 11 with hexagonal screws. The space formed by the chuck housing 11 and the wire compartment cover plate 13 is used to place the circuit device. The chuck seat 5 is a rectangular structure and is connected to the chuck housing 11 with hexagonal screws. 1. The bottom end is connected to the chuck base 5. Both the front and rear sides are connected to the chuck guide frame 14 by hexagon socket screws. The chuck guide frame 14 has a square frame on the outside and an arched structure on the inside. The two chuck guide frames 14 are provided with chuck clamping plates 15 on their outer sides. The chuck clamping plates 15 have a rectangular structure with a circular hollow through hole in the middle. The chuck clamping plates 15 are connected to the chuck base 5 through a protrusion on the inner side of the top. The chuck clamping plates 15 have grooves corresponding to the wedge blocks on the drive frame 2. The second The tension spring 16 passes through the chuck seat 5 and the chuck guide frame 14, and is fixedly connected to the front and rear chuck clamping plates 15. When the drive frame 2 is subjected to force and moves downward, the wedge block on the drive frame 2 inserts into the groove of the chuck clamping plate 15, which can lift the front and rear chuck clamping plates 15. When the force on the drive frame 2 is released, the drive frame 2 returns to its original position, the wedge block on the drive frame 2 disengages from the groove of the chuck clamping plate 15, and the second tension spring 16 drives the front and rear chuck clamping plates 15 to return to their original position.

[0040] Specifically, the conductive contact device includes a guide plate 10 and a conductive contact 6. The guide plate 10 has a rectangular structure and is mounted on the top of the chuck seat 5 using a cross-head screw. The guide plate 10 has several wire pressing seats 12, which are rounded cylindrical structures, eight in number, and are connected to the guide plate 10 using screws. The conductive contact 6 passes through the chuck seat 5, the guide plate 10, and the wire pressing seats 12, and is slidably connected to the wire pressing seats 12. The conductive contact 6 has a cylindrical structure, with its front end diameter larger than its rear end. The front end is used to contact the relay contacts to measure parameters, and the rear end is used to connect to the circuit device. A first compression spring 24 is sleeved on the conductive contact 6, with one end of the first compression spring 24 fixedly connected to the wire pressing seat 12. The conductive contact 6 contacts the contacts of the relay under test. Under the action of the first compression spring 24, the conductive contact 6 ensures effective contact between the conductive contact 6 and the contacts of the relay under test, enhancing contact stability. The conductive contact 6 is electrically connected to the automatic relay calibrator to facilitate one-button measurement and data storage of the relay.

[0041] Specifically, the conductive claw device includes several conductive claws. A drive pin 20 is connected to the upper end of each conductive claw. A second compression spring 23 is sleeved on the end of the drive pin 20. One end of the second compression spring 23 is fixedly connected to the guide plate 10. A hinge shaft 19 passes through the middle of the conductive claw, allowing the conductive claw to rotate around the hinge shaft 19. Both ends of the hinge shaft 19 are fixedly connected to the chuck seat 5. A drive shaft 7 is provided on the chuck seat 5, located above the hinge shaft 19. The middle part of the drive shaft 7 abuts against the conductive claw, and both ends are slidably connected to the sliding grooves on the drive frame 2. When the drive frame 2... When the device moves downward under force, the sliding groove presses the drive shaft 7 inward, causing the conductive contact to rotate around the hinge shaft 19, thus opening the conductive contact. When the drive frame 2 is released from force, the second compression spring 23 drives the conductive contact to reset through the drive pin 20. The bottom of the conductive contact is detachably equipped with a conductive contact head 18, which facilitates disassembly, grinding, and replacement of the conductive contact head 18, reducing the overall cost of consumable parts and thus reducing the overall testing cost. The conductive contact head 18 is electrically connected to the automatic relay calibrator to realize one-button measurement and data storage of the relay.

[0042] Specifically, the conductive claws have a sheet-like structure, including two long conductive claws 9 and eight short conductive claws 8. They are evenly distributed on both sides of the guide plate 10 to grip and clamp different contacts of the relay. Both the long conductive claws 9 and the short conductive claws 8 are equipped with insulating sleeves to prevent electric shock accidents caused by direct contact with the circuit or contacts, thus ensuring the personal safety of workers.

[0043] Specifically, the long conductive claw 9 is 100-120mm in length, with its lower end forming a 150-160 degree angle with its upper end, while the short conductive claw 8 is 80-100mm in length.

[0044] Specifically, the conductive claw contact 18 has a hook-shaped structure, is made of phosphor bronze, and has a 45-60 degree chamfer at the front end. The length of its end point is 4-7mm and the width of its end point is 0.8-1.5mm. This ensures that the contact area of ​​the conductive claw contact 18 is maximized within a reasonable space, thereby reducing contact resistance.

[0045] Specifically, an insulating sleeve 17 is fitted onto the conductive contact 6 to prevent electric shock accidents caused by direct contact with the circuit or contact points, thus ensuring the personal safety of workers.

[0046] Specifically, the top of the guide plate 10 is provided with a cover plate 21, which is located above the wire clamping seat 12 and is used to protect the wire clamping seat 12 and conductive contact 6 and other components.

[0047] Specifically, the claw body is made of resin material. The claw body material can be designed to be stainless steel, magnesium alloy, acrylic and resin, etc. The present invention prefers resin material, which is convenient to reduce the overall weight and manufacturing cost.

[0048] The working principle of this invention is as follows:

[0049] During operation, hold the chuck handle 4 and press down on the drive handle 1. The drive handle 1 moves downward under force, and the wedge block on the drive frame 2 inserts into the groove of the chuck clamping plate 15, causing the two chuck clamping plates 15 to lift. At the same time, the sliding groove on the drive frame 2 presses the drive shaft 7 inward, causing the conductive claw to rotate around the hinge shaft 19, thus opening the conductive claw. When gripping the relay under test, the conductive contact 6 is aligned with the contact point of the relay under test. Under the action of the first compression spring 24, the conductive contact 6 is ensured to make effective contact with the contact point of the relay under test. After the relay under test is successfully gripped, release the drive handle 1. The first tension spring 22 drives the drive frame... 2. Reset upwards, the wedge block on the drive frame 2 disengages from the groove of the clamping plate 15, the second tension spring 16 drives the front and rear clamping plates 15 to reset, and the second compression spring 23 drives the conductive claw to reset through the drive pin 20, fixing the relay under test in the claw. The conductive claw contact 18 and conductive contact 6 can read the test data at the same time, which is transmitted by the claw's circuit device to the automatic relay tester for analysis and data archiving. After the test is completed, press the drive handle 1 down again, the two clamping plates 15 are lifted, the conductive claws open, and the claw can be easily removed from the relay under test, thus completing the entire gripping, testing and disassembly process.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An automatic relay testing gripper, comprising an automatic relay calibrator and a gripper body, wherein the automatic relay calibrator is disposed inside the gripper body, characterized in that: The gripper body includes a driving device and a chuck device. The driving device includes a driving handle and a driving frame. The driving handle is located on the top of the driving frame. The lower part of the driving frame is provided with several wedge-shaped blocks and sliding grooves. The chuck device is located inside the driving frame and abuts against it. The chuck device is provided with a conductive contact device inside. The conductive contact device is provided with a conductive claw device. The conductive contact device and the conductive claw device are electrically connected to the automatic relay calibrator. The chuck device includes a mounting bracket, a first tension spring, and a second tension spring. The two mounting brackets are arranged opposite each other on both sides of the drive frame and abut against it. The two ends of the first tension spring are fixedly connected to the mounting bracket and the drive frame, respectively. The top and bottom of the mounting bracket are respectively provided with a chuck handle and a chuck housing. The top and bottom of the chuck housing are respectively provided with a wire compartment cover and a chuck seat. The front and rear sides of the chuck seat are provided with chuck guide frames. The outer side of the chuck guide frames is provided with a chuck clamping plate. The chuck clamping plate is provided with a groove corresponding to the wedge block on the drive frame. The second tension spring passes through the chuck seat and the chuck guide frame and is fixedly connected to the front and rear chuck clamping plates. When the drive frame moves downward, the wedge block on the drive frame inserts into the groove of the chuck clamping plate, which can lift the front and rear chuck clamping plates. The conductive claw device includes a plurality of conductive claws. A drive pin is connected to the upper end of each conductive claw. A second compression spring is sleeved on the end of the drive pin. One end of the second compression spring is fixedly connected to a guide plate. A hinge shaft is passed through the middle of each conductive claw. Both ends of the hinge shaft are fixedly connected to a chuck seat. A drive shaft is provided on the chuck seat. The drive shaft is located above the hinge shaft. Its middle part abuts against the conductive claw, and both ends are slidably connected to the sliding groove on the drive frame. A conductive claw contact is detachably provided at the bottom of each conductive claw. The conductive claw contact is electrically connected to the automatic relay calibrator. When the drive frame moves downward, the sliding groove squeezes the drive shaft, causing the conductive claw to rotate around the hinge shaft, thereby opening the conductive claw.

2. The automatic relay detection gripper according to claim 1, characterized in that: The conductive contact device includes a guide plate and a conductive contact. The guide plate is disposed on the top of the chuck seat and has a plurality of wire pressing seats. The conductive contact passes through the chuck seat, the guide plate and the wire pressing seats and is slidably connected to the wire pressing seats. A first compression spring is sleeved on the conductive contact and one end of the first compression spring is fixedly connected to the wire pressing seat. The conductive contact is electrically connected to the automatic relay calibrator.

3. The automatic relay detection gripper according to claim 1, characterized in that: The conductive claw has a sheet-like structure, including a long conductive claw and a short conductive claw, and both the long and short conductive claws are provided with an insulating sleeve.

4. The relay automatic detection gripper according to claim 3, characterized in that: The long conductive claw is 100-120mm in length, with its lower end forming a 150-160 degree angle with its upper end, and the short conductive claw is 80-100mm in length.

5. The automatic relay detection gripper according to claim 1, characterized in that: The conductive claw has a hook-shaped contact, is made of phosphor bronze, has a 45-60 degree chamfer at the front end, and has a length of 4-7 mm and a width of 0.8-1.5 mm at the end.

6. The relay automatic detection gripper according to claim 2, characterized in that: An insulating sleeve is fitted onto the conductive contact.

7. The relay automatic detection gripper according to claim 2, characterized in that: The guide plate is provided with a cover plate on top, and the cover plate is located above the pressure seat.

8. The automatic relay detection gripper according to claim 1, characterized in that: The claw body is made of resin.

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