Relay protection test bench

Abstract

The invention discloses a relay protection test bench, relates to the field of relay protection test equipment, and solves the problem that the existing relay protection test bench is easy to cause wire dragging, the relay protection test bench comprises a test bench body and a detection host fixedly installed at the top of the test bench body, and the outer side of the detection host is provided with five wire sockets distributed at equal intervals. A test panel is fixedly installed on the side, close to the wire socket, of the detection host. Five placement plates distributed at equal intervals are arranged on the inner side of the test bed body. The position adjusting mechanism is used for adjusting the height of the five placing plates, and the position adjusting mechanism is mounted on the inner side of the test bed body; according to the invention, through the position adjusting mechanism, the heights of the three placing plates and the two placing plates can be adjusted together, and the heights of the three placing plates are higher than the heights of the other two placing plates, so that electric appliances with more lead lengths can be tested conveniently, the problem of lead pulling is solved, and the convenience of a relay protection test is improved.

Description

Technical Field

[0001] The invention relates to the field of relay protection test equipment, in particular to a relay protection test bench. Background Art

[0002] Relay protection is an important measure to detect faults or abnormal conditions in the power system, thereby issuing an alarm signal, or directly isolating and removing the faulty part. It is an automated anti-accident measure in the power system. The main protection objects include key equipment such as generators, transformers, transmission lines and busbars.

[0003] The relay protection test bench is a device used for conducting relay protection experiments in power systems. It is mainly used to simulate various faults and abnormal working conditions in power systems to test and verify the performance and reliability of relay protection devices. The existing Chinese public patent document: CN220154595U discloses a relay protection test bench, which transforms the Y-axis beam into a telescopic track structure, and installs a socket platform between the telescopic tracks. The socket platform can move in the vertical direction along the telescopic track, thereby changing the position of the socket in the vertical direction. The socket and the socket platform are detachably connected by contact power supply, so that the number of sockets and the position in the horizontal direction can be adjusted according to actual conditions. The socket platform and the telescopic track also use the contact power supply method, which ensures the power supply stability of the socket and prevents the problems of messy wires and complicated sockets on the test bench. However, the length of the wire varies. When the socket platform moves upward, it will pull the wire. If the moving height of the socket platform is too high, the short wire will be pulled, which is easy to cause the wire to fall off. If the moving height of the socket platform is too low, the long wire will still be messy, affecting the subsequent wire test. Summary of the invention

[0004] The purpose of the present invention is to provide a relay protection test bench to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A relay protection test bench comprises: a test bench body and a detection host fixedly mounted on the top of the test bench body, the outer side of the detection host is provided with five equidistantly distributed wire sockets for inserting plugs of wires, a test panel is fixedly mounted on the side of the detection host close to the wire sockets for easy operation and display of test data of the wires, and the inner side of the test bench body is provided with five equidistantly distributed placement boards for placing electrical appliances; it also comprises: a positioning mechanism for adjusting the height of the five placement boards, the positioning mechanism being mounted on the inner side of the test bench body; a wire clamping mechanism for storing the wires outside the wire sockets, the wire clamping mechanism being mounted on the bottom of the detection host; a wire positioning mechanism for quickly positioning the wires outside the wire sockets, the wire positioning mechanism being mounted on the outer side of the detection host.

[0006] Preferably, the positioning mechanism includes two support rods that are equidistantly fixed to the bottom of the placement plate, a moving block is fixedly installed between the bottom ends of the four support rods, an installation box is fixedly installed on the inner side of the test bench body, the top of the installation box contacts the bottom of the placement plate, and can provide support for the bottom of the placement plate, three screw rods 1 that are equidistantly installed are rotatably installed between the bottom inner wall of the test bench body and the inner side of the installation box, a screw rod 2 is arranged between two adjacent screw rods 1, the number of the screw rods 2 is two, the top end and the bottom end of the screw rods 2 are respectively rotatably installed on the inner side of the installation box and the bottom inner wall of the test bench body, the pitch of the screw rod 1 is greater than the pitch of the screw rod 2, the three screw rods 1 and the two screw rods 2 are respectively located at the five placement Below the plate, the three screw rods 1 and the two screw rods 2 are respectively matched with the five moving blocks, so that when screw rod 1 and screw rod 2 are rotated, the corresponding moving block can be driven to move upward, and the moving speed of the moving block on screw rod 2 is less than the moving speed of the moving block on screw rod 1. Four telescopic rods distributed in a rectangular array are fixedly installed between the bottom of the placement plate and the inner side of the test bench body, providing limit and guidance for the movement of the placement plate. A driving motor is fixedly installed on the inner side of the test bench body, and the output end of the driving motor is rotatably installed on the inner side of the installation box. A synchronous belt is rotatably installed between the three screw rods 1 and the two screw rods 2 and the output end of the driving motor. The driving motor can drive screw rod 1 and screw rod 2 to rotate synchronously through the synchronous belt, and the synchronous belt is located on the inner side of the installation box.

[0007] Preferably, the wire clamping mechanism includes a positioning box arranged below the wire socket, the positioning box is fixedly installed on the bottom of the detection host, a rotating drum is rotatably installed on the inner side of the positioning box, and gears 1 are fixedly installed on both ends of the rotating drum. When the rotating drum is rotated, gear 1 can be driven to rotate, a positioning strip fixedly installed on the inner side of the positioning box is arranged on the outer side of the gear 1, a rack box matching with gear 1 is slidably installed on the outer side of the positioning strip, gear 1 can drive the rack box to move, the positioning strip can provide limit and guide for the movement of the rack box, a moving plate is fixedly installed on the outer side of the rack box, Two mounting rods symmetrically distributed on both sides of the movable plate are rotatably installed on the inner side of the positioning box, and two gears 2 symmetrically distributed are fixedly installed on the outer side of the mounting rod. A plurality of teeth cooperating with the gears 2 are provided on both sides of the movable plate, so that when the movable plate moves, the teeth on the outer side can drive the two gears 2 to rotate in opposite directions, and an arc-shaped clamp 1 extending to the outside of the positioning box is provided below the gear 2, and the arc-shaped clamp 1 is fixedly installed on the outer side of the mounting rod, and an arc-shaped clamp 2 is provided at one end of the arc-shaped clamp 1 away from the mounting rod, and the wire is stored and positioned by the arc-shaped clamp 1 and the arc-shaped clamp 2.

[0008] Preferably, the line-setting mechanism includes a sliding rod slidably mounted on the inner side of the rotating drum, the cross section of the sliding rod and the inner side of the rotating drum are both corresponding polygonal structures, so that the sliding rod can drive the rotating drum to rotate when it rotates, a pressure rod is fixedly mounted on the top of the sliding rod, a pressure block is rotatably mounted on the top of the pressure rod, a cavity for limiting the sliding of the pressure block is fixedly mounted on the outer side of the detection host, a sleeve block is fixedly mounted on the inner side of the cavity, the pressure rod is slidably mounted on the inner side of the sleeve block, the outer side of the pressure rod is provided with two spiral grooves symmetrically distributed in the center, and the inner side of the sleeve block is provided with a spiral strip matching the spiral groove on the pressure rod, so that the pressure rod When moving vertically up and down, the pressure rod can be rotated by the cooperation of the spiral groove and the spiral strip. A limit frame is fixedly installed on the outer side of the wire socket, and a sliding cavity is provided on the inner side of the detection host for the limit frame to slide within a limited position. The top of the pressure block is an arc-shaped structure, and the bottom of the limit frame is an inclined structure and contacts the arc surface of the pressure block, so that when the limit frame moves, the pressure block can be pushed downward by its inclined surface. Two symmetrically distributed springs are fixedly installed between the inner side of the wire socket and the inner side of the sliding cavity to facilitate the resetting of the wire socket, and a spring is fixedly installed between the bottom of the pressure block and the sleeve block to facilitate the movement and resetting of the pressure block.

[0009] Preferably, two symmetrically distributed guardrails are fixedly installed on the top of the placement plate to provide protection for the electrical appliances on the placement plate.

[0010] Preferably, the arc clamp one is connected to the arc clamp two through a coil spring rod, and a limit block is fixedly installed on one end of the arc clamp two close to the arc clamp one, and a limit groove is provided on the outer side of the arc clamp one for the limit block to be inserted in a limited manner, so as to facilitate the direct insertion of smaller wires between the arc clamp two and the arc clamp one.

[0011] Preferably, rubber cushions are fixedly mounted on the concave surfaces of the arc-shaped clamp 1 and the arc-shaped clamp 2 to provide protection for the wires.

[0012] Preferably, an arc-shaped contact block is fixedly mounted on one end of the arc-shaped clamp 2 away from the arc-shaped clamp 1, so that the wire can push the arc-shaped clamp 2 to swing.

[0013] Preferably, a baffle is fixedly installed on one end of the movable plate away from the rack sleeve box, and the end of the baffle away from the movable plate is an arc-shaped structure. An opening is provided on the outer side of the positioning box for the movable plate to limit the sliding of the movable plate, so as to facilitate the support of the wire entering between the two arc-shaped clamps.

[0014] Preferably, a sloping platform is provided on the top of the positioning box, and the sloping platform is fixedly installed on a side of the detection host close to the wire socket, so as to facilitate the wire to vertically enter between the two arc-shaped clamps downward.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can adjust the height of the three placement plates and the two placement plates together through the position adjustment mechanism, and make the rising speed of the three placement plates greater than that of the other two placement plates, and the height of the three placement plates is higher than that of the other two placement plates, so that electrical appliances with shorter wires can be placed on the higher placement plates, and electrical appliances with longer wires can be placed on the shorter placement plates, which is convenient for testing electrical appliances with longer wire lengths, solves the problem of wire pulling, and thus improves the convenience of relay protection testing.

[0016] The present invention uses a wire clamping mechanism, wherein the first arc clamp and the second arc clamp can accommodate and position the wires inserted into the wire socket, thereby realizing one-to-one positioning of the wires and solving the problem of messy wires, thereby achieving the effect of facilitating wire accommodation and improving the neatness of the test bench body.

[0017] The present invention uses a wire fixing mechanism to swing and open the two arc-shaped clamps when the wire socket is connected to the plug of the wire, so that the staff can put the wire between the two arc-shaped clamps, so that the arc-shaped clamps one and the arc-shaped clamps two can quickly store the wires, thereby improving the efficiency of wire storage and facilitating the rapid arrangement of the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2It is a schematic diagram of the structure of the test bench body and the placement plate in the present invention; Figure 3 It is a schematic diagram of the structure of the installation box and the driving motor in the present invention; Figure 4 It is a schematic diagram of the structure of the wire socket and the positioning box in the present invention; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of the middle A area; Figure 6 It is a schematic diagram of the structure of the moving plate and the rotating drum in the present invention; Figure 7 for Figure 6 Schematic diagram of the enlarged structure of the middle B area; Figure 8 It is a schematic diagram of the structure of the arc-shaped clamp and the rubber cushion in the present invention.

[0019] In the figure: 1. test bench body; 2. detection host; 3. wire socket; 4. test panel; 5. placement plate; 6. support rod; 7. moving block; 8. installation box; 9. screw rod 1; 10. screw rod 2; 11. telescopic rod; 12. drive motor; 13. synchronous belt; 14. positioning box; 15. rotating drum; 16. gear 1; 17. positioning bar; 18. rack sleeve box; 19. moving plate; 20. installation rod; 21. gear 2; 22. arc clamp 1; 23. arc clamp 2; 24. pressure rod; 25. pressure block; 26. sleeve block; 27. limit frame; 28. spring 1; 29. ​​spring 2; 30. guardrail; 31. slide rod; 32. limit block; 33. rubber cushion; 34. arc contact block; 35. baffle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1-Figure 8A relay protection test bench shown in the figure includes a test bench body 1 and a detection host 2 fixedly installed on the top of the test bench body 1. Five equidistantly distributed wire sockets 3 are arranged on the outside of the detection host 2 for inserting plugs of wires. A test panel 4 is fixedly installed on the side of the detection host 2 close to the wire sockets 3 to facilitate operation and display of test data of the wires. Five equidistantly distributed placement boards 5 are arranged on the inside of the test bench body 1 for placing electrical appliances; it also includes: a positioning mechanism for adjusting the height of the five placement boards 5, the positioning mechanism being installed on the inside of the test bench body 1; a wire clamping mechanism for storing the wires on the outside of the wire sockets 3, the wire clamping mechanism being installed on the bottom of the detection host 2; a wire positioning mechanism for quickly positioning the wires on the outside of the wire sockets 3, the wire positioning mechanism being installed on the outside of the detection host 2.

[0022] The positioning mechanism includes two support rods 6 which are equidistantly fixedly installed on the bottom of the placement plate 5, a moving block 7 is fixedly installed between the bottom ends of the four support rods 6, a mounting box 8 is fixedly installed on the inner side of the test bench body 1, the top of the mounting box 8 is in contact with the bottom of the placement plate 5, and can provide support for the bottom of the placement plate 5, three screw rods 9 which are equidistantly distributed are rotatably installed between the bottom inner wall of the test bench body 1 and the inner side of the mounting box 8, a screw rod 2 10 is arranged between two adjacent screw rods 1 9, the number of the screw rods 2 10 is two, the top and bottom ends of the screw rods 2 10 are rotatably installed on the inner side of the mounting box 8 and the bottom inner wall of the test bench body 1, the pitch of the screw rod 1 9 is greater than the pitch of the screw rod 2 10, the three screw rods 1 9 and the two screw rods 2 10 are respectively located below the five placement plates 5, and the three screw rods 1 9 and the two screw rods 2 The screw rod 2 10 cooperates with the five moving blocks 7 respectively, so that when the screw rod 1 9 and the screw rod 2 10 rotate, the corresponding moving block 7 can be driven to move upward, and the moving speed of the moving block 7 on the screw rod 2 10 is less than the moving speed of the moving block 7 on the screw rod 1 9. Four telescopic rods 11 distributed in a rectangular array are fixedly installed between the bottom of the placement plate 5 and the inner side of the test bench body 1, providing limit and guidance for the movement of the placement plate 5. A driving motor 12 is fixedly installed on the inner side of the test bench body 1, and the output end of the driving motor 12 is rotatably installed on the inner side of the installation box 8. A synchronous belt 13 is rotatably installed between the three screw rods 1 9 and the two screw rods 2 10 and the output end of the driving motor 12. The driving motor 12 can drive the screw rods 1 9 and the screw rods 2 10 to rotate synchronously through the synchronous belt 13, and the synchronous belt 13 is located on the inner side of the installation box 8; The driving motor 12 can drive the three screw rods 19 and the two screw rods 2 10 to rotate synchronously through the synchronous belt 13, so that the screw rods 19 and the screw rods 2 10 drive the moving block 7 to move upward, and the moving block 7 pushes the placement plate 5 to move upward through the support rod 6. The placement plate 5 moves upward smoothly under the wires and support of the four telescopic rods 11. Since the pitch of the screw rod 1 9 is greater than the pitch of the screw rod 2 10, the moving speed of the moving block 7 on the screw rod 1 9 is greater than the moving speed of the moving block 7 on the screw rod 2 10. The staff can place electrical appliances with shorter wires on the placement plate 5 above the screw rod 1 9, and can place electrical appliances with longer wires on the placement plate 5 above the screw rod 2 10, which is convenient for the wires to be connected to the wire socket 3, solves the problem of wire pulling, and thus improves the convenience of relay protection testing.

[0023] The wire clamping mechanism includes a positioning box 14 arranged below the wire socket 3, the positioning box 14 is fixedly installed at the bottom of the detection host 2, a rotating drum 15 is rotatably installed on the inner side of the positioning box 14, and gears 16 are fixedly installed at both ends of the rotating drum 15. When the rotating drum 15 is rotated, the gear 16 can be driven to rotate, and a positioning bar 17 fixedly installed on the inner side of the positioning box 14 is arranged on the outer side of the gear 16. A rack box 18 matching the gear 16 is slidably installed on the outer side of the positioning bar 17. The gear 16 can drive the rack box 18 to move, and the positioning bar 17 can provide a limit and guide for the movement of the rack box 18. A moving plate 19 is fixedly installed on the outer side of the rack box 18. Two mounting rods 20 symmetrically distributed on both sides of the moving plate 19 are rotatably installed on the inner side of the positioning box 14, and two symmetrically distributed gears 21 are fixedly installed on the outer side of the mounting rod 20. Both sides of the moving plate 19 are provided with a plurality of teeth matched with the gears 21, so that when the moving plate 19 moves, the teeth on the outer side can drive the two gears 21 to rotate in opposite directions. An arc-shaped clamp 1 22 extending to the outer side of the positioning box 14 is arranged below the gear 21. The arc-shaped clamp 1 22 is fixedly installed on the outer side of the mounting rod 20, and an arc-shaped clamp 23 is arranged at one end of the arc-shaped clamp 1 22 away from the mounting rod 20, and the wire is stored and positioned by the arc-shaped clamp 1 22 and the arc-shaped clamp 23; Rotating the drum 15 can drive the two gears 16 to rotate synchronously, so that the gear 16 drives the rack box 18 to move along the outside of the positioning strip 17, and the rack box 18 drives the corresponding two gears 21 to rotate in opposite directions through the teeth on the outside of the moving plate 19, so that the two gears 21 drive the two arc clamps 1 22 to swing open, and the staff can insert the wire between the two arc clamps 1 22 and the two arc clamps 23, so that the arc clamps 1 22 and the arc clamps 23 can store the wire, realize one-to-one positioning of the wire, solve the problem of messy wires, thereby achieving the effect of facilitating wire storage and improving the neatness of the test bench body 1.

[0024] The line setting mechanism includes a slide bar 31 slidably mounted on the inner side of the rotating drum 15. The cross section of the slide bar 31 and the inner side of the rotating drum 15 are both polygonal structures corresponding to each other, so that the slide bar 31 can drive the rotating drum 15 to rotate when it rotates. A pressure rod 24 is fixedly mounted on the top of the slide bar 31, and a pressure block 25 is rotatably mounted on the top of the pressure rod 24. A cavity for limiting the sliding of the pressure block 25 is fixedly mounted on the outer side of the detection host 2, and a sleeve block 26 is fixedly mounted on the inner side of the cavity. The pressure rod 24 is slidably mounted on the inner side of the sleeve block 26. Two spiral grooves symmetrically distributed in the center are provided on the outer side of the pressure rod 24, and a spiral strip matching the spiral groove on the pressure rod 24 is provided on the inner side of the sleeve block 26, so that the pressure rod 24 can be moved when it is moving. When moving vertically up and down, the pressure rod 24 can be rotated by the cooperation of the spiral groove and the spiral strip. A limit frame 27 is fixedly installed on the outer side of the wire socket 3. A sliding cavity for the limit frame 27 to limit the sliding is provided on the inner side of the detection host 2. The top of the pressure block 25 is an arc-shaped structure, and the bottom of the limit frame 27 is an inclined surface structure and contacts the arc surface of the pressure block 25, so that when the limit frame 27 moves, the pressure block 25 can be pushed downward by its inclined surface. Two symmetrically distributed springs 28 are fixedly installed between the inner side of the wire socket 3 and the inner side of the sliding cavity to facilitate the resetting of the wire socket 3. A spring 29 is fixedly installed between the bottom of the pressure block 25 and the sleeve block 26 to facilitate the movement and resetting of the pressure block 25. When the staff connects the plug of the wire with the wire socket 3, the wire socket 3 can be pushed to move, so that the wire socket 3 drives the limit frame 27 to move along the sliding cavity of the detection host 2 and compresses the spring 1 28. The inclined surface of the limit frame 27 can push the arc surface on the top of the pressure block 25, so that the pressure block 25 moves downward along the cavity of the detection host 2. The pressure block 25 drives the pressure rod 24 to move synchronously and compresses the spring 29. The spiral groove on the pressure rod 24 moves along the spiral strip of the sleeve block 26, so that the pressure rod 24 can move downward. In the state of self-rotation, the pressure rod 24 can drive the rotating drum 15 to rotate through the sliding rod 31, so that the rotating drum 15 can swing open the two arc-shaped clamps 22, and the wire can enter between the arc-shaped clamp 1 22 and the arc-shaped clamp 23. At this time, the staff can loosen the wire socket 3 and use the resilience of the spring 1 28 and the spring 2 29 to automatically reset the wire socket 3 and the pressure block 25, and the arc-shaped clamp 1 22 and the arc-shaped clamp 23 swing and reset, so as to realize the automatic storage of the wire, thereby improving the efficiency of wire storage and facilitating the rapid arrangement of the wire.

[0025] Working principle: First, the staff starts the driving motor 12, so that the driving motor 12 drives the three screw rods 1 9 and the two screw rods 2 10 to rotate synchronously through the synchronous belt 13, and the screw rods 1 9 and the screw rods 2 10 respectively drive the corresponding moving blocks 7 to move upward, so that the moving blocks 7 push the placement plate 5 to move upward through the two support rods 6, and the placement plate 5 stretches the telescopic rod 11. Since the pitch of the screw rod 1 9 is greater than the pitch of the screw rod 2 10, the moving speed of the moving block 7 on the screw rod 1 9 is greater than the moving speed of the moving block 7 on the screw rod 2 10, and the height of the placement plate 5 directly above the screw rod 1 9 is higher than the height of the placement plate 5 directly above the screw rod 2 10. Then, the staff puts the electrical appliance with shorter wires on The screw rod 1 9 is placed on the placement plate 5 above the screw rod 1 9, and the electrical appliance with a longer wire is placed on the placement plate 5 above the screw rod 2 10. Then, the staff inserts the plug of the wire into the wire socket 3 just above it, and pushes the wire socket 3 to move, so that the wire socket 3 drives the limit frame 27 to move along the sliding cavity of the detection host 2, and compresses the spring 1 28. The inclined surface of the limit frame 27 pushes the arc surface on the top of the pressure block 25, so that the pressure block 25 moves downward along the cavity of the detection host 2, and the pressure block 25 drives the pressure rod 24 to move synchronously, and compresses the spring 2 29. The spiral groove on the pressure rod 24 moves along the spiral strip of the sleeve block 26, so that the pressure rod 24 keeps rotating while moving downward, and the pressure rod 24 drives the slide bar 31 synchronously Rotate and move downward. At this time, the slide bar 31 moves downward along the inner side of the rotating drum 15 and drives the rotating drum 15 to rotate. The rotating drum 15 drives the two gears 16 to rotate synchronously, so that the gear 16 drives the rack box 18 to move along the outer side of the positioning strip 17. The rack box 18 drives the moving plate 19 to move synchronously, so that the moving plate 19 drives the corresponding two gears 21 to rotate in opposite directions through the two teeth on the outer side thereof. The gear 21 drives the arc clamp 1 22 to rotate, so that the two arc clamps 1 22 drive the corresponding two arc clamps 23 to swing open, and the wire can enter between the two arc clamps 1 22 and the two arc clamps 23. Then, the staff loosens the wire socket 3 and uses The rebound force of spring 1 28 causes spring 1 28 to push the limit frame 27 on the wire socket 3 to reset. The inclined surface of the limit frame 27 is away from the arc surface of the pressure block 25, and the rebound force of spring 2 29 is used to reset the pressure block 25 upward. The pressure rod 24 can move upward and rotate in the opposite direction to realize the reverse rotation of the rotating drum 15. The two arc clamps 1 22 can be swung to reset, so that the two arc clamps 1 22 and the two arc clamps 23 can store the wires. Finally, the staff starts the detection host 2 through the test panel 4, so that the detection equipment tests the wires, thereby achieving the effect of safety testing, improving the safety of relay protection testing and the convenience of wire storage, and ensuring the cleanliness of the test bench body 1.

[0026] Example 2: Please refer to Figure 6-Figure 8The present embodiment further illustrates the first embodiment. The arc-shaped clamp 1 22 shown in the figure is connected with the arc-shaped clamp 2 23 through a coil spring rod. The arc-shaped clamp 23 is fixedly installed with a limit block 32 at one end close to the arc-shaped clamp 1 22. A limit groove for the limit block 32 to be inserted in a limited manner is provided on the outer side of the arc-shaped clamp 1 22, which is convenient for directly inserting a smaller wire between the arc-shaped clamp 23 and the arc-shaped clamp 1 22. Rubber cushions 33 are fixedly installed on the arc-shaped concave surfaces of the arc-shaped clamp 1 22 and the arc-shaped clamp 23 to provide protection for the wire. An arc-shaped contact block 34 is fixedly installed at one end of the arc-shaped clamp 23 away from the arc-shaped clamp 1 22, which is convenient for the wire to push the arc-shaped clamp 23 to swing. A baffle 35 is fixedly installed at one end of the movable plate 19 away from the rack sleeve box 18. The end of the baffle 35 away from the movable plate 19 is an arc-shaped structure. An opening for the movable plate 19 to slide in a limited manner is provided on the outer side of the positioning box 14, which is convenient for resisting the wire entering between the two arc-shaped clamps 1 22.

[0027] The two arc-shaped clamps 23 are pressed against the outer side of the wire by the arc-shaped concave surfaces of the two arc-shaped contact blocks 34, and the arc-shaped contact blocks 34 drive the arc-shaped clamp 23 to swing with the coil spring rod as the fulcrum, so that the wire can be inserted between the two arc-shaped clamps 23, and the resilience of the coil spring rod is used to reset the two arc-shaped clamps 23, and the limit block 32 on the arc-shaped clamp 23 can be inserted into the limit groove of the arc-shaped clamp 1 22, so as to realize the rapid installation of the wire and improve the convenience of the wire installation. When the movable plate 19 moves, the baffle plate 35 can be pushed to move between the two arc-shaped clamps 1 22, so that when the two arc-shaped clamps 1 22 are swung open, the arc surface of the baffle plate 35 can contact the outer side of the wire, so as to prevent the two arc-shaped clamps 1 22 from squeezing the wire away from one end of the arc-shaped clamp 23, thereby improving the safety of the wire storage, and the rubber pad 33 on the arc-shaped clamp 1 22 and the arc-shaped clamp 23 can provide protection for the wire.

[0028] Example 3: Please refer to Figure 1-Figure 6 This embodiment further illustrates other embodiments. Two symmetrically distributed guardrails 30 are fixedly installed on the top of the placement board 5 in the figure to provide protection for the electrical appliances on the placement board 5. An inclined platform is opened on the top of the positioning box 14, and the inclined platform is fixedly installed on the side of the detection host 2 close to the wire socket 3 to facilitate the wire to enter vertically downward between the two arc-shaped clamps 23.

[0029] In this embodiment: when the staff places the electrical appliance on the placement plate 5, the two guardrails 30 on the top of the placement plate 5 can provide protection for the electrical appliance to prevent collision when installing multiple electrical appliances, thereby improving the safety of electrical appliance installation. The positioning box 14 can be fixed on the detection host 2 through the inclined platform, and when the plug of the wire is connected to the wire socket 3, the wire can enter between the two arc-shaped clamps 1 22 and the two arc-shaped clamps 23 along the inclined surface of the inclined platform, providing guidance for the storage of the wire.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A relay protection test bench, characterized in that: include: A test bench body (1) and a detection host (2) fixedly mounted on the top of the test bench body (1); five wire sockets (3) distributed at equal intervals are arranged on the outside of the detection host (2); a test panel (4) is fixedly mounted on one side of the detection host (2) close to the wire sockets (3); and five placement plates (5) distributed at equal intervals are arranged on the inside of the test bench body (1); Also includes: A positioning mechanism, used for adjusting the height of the five placement plates (5), the positioning mechanism being installed on the inner side of the test bench body (1); A wire clamping mechanism, used for receiving wires outside the wire socket (3), the wire clamping mechanism being installed at the bottom of the detection host (2); A wire positioning mechanism is used to quickly position the wire outside the wire socket (3), and the wire positioning mechanism is installed outside the detection host (2).

2. A relay protection test bench according to claim 1, characterized in that: The positioning mechanism comprises two support rods (6) which are equidistantly fixedly mounted on the bottom of the placement plate (5), a moving block (7) is fixedly mounted between the bottom ends of the four support rods (6), a mounting box (8) is fixedly mounted on the inner side of the test bench body (1), the top of the mounting box (8) is in contact with the bottom of the placement plate (5), three screw rods (9) which are equidistantly distributed are rotatably mounted between the bottom inner wall of the test bench body (1) and the inner side of the mounting box (8), a screw rod (10) is arranged between two adjacent screw rods (9), the number of the screw rods (10) is two, the top end and the bottom end of the screw rod (10) are rotatably mounted on the inner side of the mounting box (8) and the bottom inner wall of the test bench body (1), respectively, and the pitch of the screw rod (9) is greater than that of the screw rod. The pitch of the screw rod 2 (10) is as follows: the three screw rods 1 (9) and the two screw rods 2 (10) are respectively located below the five placement plates (5); the three screw rods 1 (9) and the two screw rods 2 (10) are respectively matched with the five moving blocks (7); four telescopic rods (11) distributed in a rectangular array are fixedly installed between the bottom of the placement plate (5) and the inner side of the test bench body (1); a driving motor (12) is fixedly installed on the inner side of the test bench body (1); the output end of the driving motor (12) is rotatably installed on the inner side of the installation box (8); a synchronous belt (13) is rotatably installed between the three screw rods 1 (9) and the two screw rods 2 (10) and the output end of the driving motor (12); the synchronous belt (13) is located on the inner side of the installation box (8).

3. A relay protection test bench according to claim 2, characterized in that: The wire clamping mechanism comprises a positioning box (14) arranged below the wire socket (3), the positioning box (14) being fixedly mounted on the bottom of the detection host (2), a rotating drum (15) being rotatably mounted on the inner side of the positioning box (14), a gear 1 (16) being fixedly mounted on both ends of the rotating drum (15), a positioning bar (17) being fixedly mounted on the inner side of the positioning box (14) being arranged on the outer side of the gear 1 (16), a rack box (18) matching with the gear 1 (16) being slidably mounted on the outer side of the positioning bar (17), a moving plate (19) being fixedly mounted on the outer side of the rack box (18), and the like. Two mounting rods (20) symmetrically distributed on both sides of the movable plate (19) are rotatably mounted on the inner side of the positioning box (14); two gears (21) symmetrically distributed are fixedly mounted on the outer side of the mounting rods (20); a plurality of teeth matching the gears (21) are provided on both sides of the movable plate (19); an arc-shaped clamp (22) extending to the outer side of the positioning box (14) is provided below the gears (21); the arc-shaped clamp (22) is fixedly mounted on the outer side of the mounting rods (20); an arc-shaped clamp (23) is provided at one end of the arc-shaped clamp (22) away from the mounting rods (20).

4. A relay protection test bench according to claim 3, characterized in that: The alignment mechanism comprises a slide bar (31) slidably mounted on the inner side of the rotating drum (15), the cross section of the slide bar (31) and the inner side of the rotating drum (15) both being polygonal structures corresponding to each other, a pressure bar (24) being fixedly mounted on the top of the slide bar (31), a pressure block (25) being rotatably mounted on the top of the pressure bar (24), a cavity for limiting the sliding of the pressure block (25) being fixedly mounted on the outer side of the detection host (2), a sleeve block (26) being fixedly mounted on the inner side of the cavity, the pressure bar (24) being slidably mounted on the inner side of the sleeve block (26), and two spiral grooves symmetrically distributed in the center are provided on the outer side of the pressure bar (24). The inner side of the sleeve block (26) is provided with a spiral strip that matches the spiral groove on the pressure rod (24); the outer side of the wire socket (3) is fixedly installed with a limit frame (27); the inner side of the detection host (2) is provided with a sliding cavity for the limit frame (27) to slide in a limited position; the top of the pressure block (25) is an arc-shaped structure; the bottom of the limit frame (27) is an inclined surface structure and contacts the arc surface of the pressure block (25); two symmetrically distributed springs (28) are fixedly installed between the inner side of the wire socket (3) and the inner side of the sliding cavity; and a spring (29) is fixedly installed between the bottom of the pressure block (25) and the sleeve block (26).

5. A relay protection test bench according to claim 1, characterized in that: Two symmetrically distributed guardrails (30) are fixedly mounted on the top of the placement plate (5).

6. A relay protection test bench according to claim 3, characterized in that: The arc-shaped clamp 1 (22) is connected to the arc-shaped clamp 2 (23) via a coil spring rod; a limit block (32) is fixedly installed on one end of the arc-shaped clamp 2 (23) close to the arc-shaped clamp 1 (22); and a limit groove for the limit block (32) to be inserted into the limit position is provided on the outer side of the arc-shaped clamp 1 (22).

7. A relay protection test bench according to claim 3, characterized in that: Rubber cushions (33) are fixedly mounted on the concave surfaces of the arc-shaped clamp 1 (22) and the arc-shaped clamp 2 (23).

8. A relay protection test bench according to claim 3, characterized in that: An arc-shaped contact block (34) is fixedly mounted on one end of the arc-shaped clamp 2 (23) away from the arc-shaped clamp 1 (22).

9. A relay protection test bench according to claim 3, characterized in that: A baffle (35) is fixedly mounted on one end of the movable plate (19) away from the rack sleeve box (18); the end of the baffle (35) away from the movable plate (19) is an arc-shaped structure; and an opening for limiting sliding of the movable plate (19) is provided on the outer side of the positioning box (14).

10. A relay protection test bench according to claim 3, characterized in that: The top of the positioning box (14) is provided with an inclined platform, and the inclined platform is fixedly mounted on a side of the detection host (2) close to the wire socket (3).

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