A relay protection test bench

Abstract

The present invention discloses a relay protection test bench, which relates to the field of relay protection test equipment and solves the problem that the existing relay protection test bench is prone to cause wire pulling. It includes: a test bench body and a detection host fixedly installed on the top of the test bench body. There are five wire sockets arranged at equal intervals on the outer side of the detection host. A test panel is fixedly installed on the side of the detection host close to the wire sockets. There are five placement plates arranged at equal intervals inside the test bench body; it also includes: a position adjustment mechanism for adjusting the heights of the five placement plates, and the position adjustment mechanism is installed inside the test bench body; through the position adjustment mechanism of the present invention, the heights of three placement plates and two placement plates can be adjusted together, and the heights of three of the placement plates are higher than those of the other two placement plates, which is convenient for testing electrical appliances with more wire lengths, solves the problem of wire pulling, and thus improves the convenience of relay protection tests.

Description

Technical Field

[0001] The present invention relates to the field of relay protection test equipment, and specifically to a relay protection test bench. Background Technique

[0002] Relay protection is an important measure to detect faults or abnormal conditions occurring in the power system, so as to send out alarm signals, or directly isolate and cut off the faulty part. It is an anti-accident automation measure in the power system, and its main protection objects include key equipment such as generators, transformers, transmission lines and busbars.

[0003] A relay protection test bench is a device used for conducting relay protection experiments in the power system. It is mainly used to simulate various faults and abnormal working conditions in the power system to test and verify the performance and reliability of relay protection devices. The existing Chinese patent publication: CN220154595U discloses a relay protection test bench, which transforms the Y-axis beam body into a telescopic track structure, installs a socket platform between the telescopic tracks, and the socket platform can move vertically along the telescopic track, thereby changing the position of the socket in the vertical direction. The socket is detachably connected to the socket platform by contact power taking, so that the number of sockets and their positions in the horizontal direction can be adjusted according to the actual situation. The socket platform and the telescopic track also adopt the contact power taking method to ensure the power supply stability of the socket and prevent the problems of messy wires and complicated sockets on the test bench. However, the lengths of the wires are different. When the socket platform moves upward, it will pull the wires. If the moving height of the socket platform is too high, the short wires will be pulled, which is likely to cause the wires to fall off. If the moving height of the socket platform is too low, the long wires will still be messy, affecting the subsequent wire testing. 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 technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A relay protection test bench, comprising: a test bench body and a detection host fixedly installed on the top of the test bench body. There are five wire sockets arranged at equal intervals on the outer side of the detection host for inserting plugs of wires. A test panel is fixedly installed on one side of the detection host close to the wire sockets, which is convenient for operating and displaying the test data of the wires. There are five placement plates arranged at equal intervals on the inner side of the test bench body for placing electrical appliances; further comprising: a position adjustment mechanism for adjusting the height of the five placement plates, and the position adjustment mechanism is installed on the inner side of the test bench body; a wire clamping mechanism for storing the wires outside the wire sockets, and the wire clamping mechanism is installed at the bottom of the detection host; a wire positioning mechanism for quickly positioning the wires outside the wire sockets, and the wire positioning mechanism is installed on the outer side of the detection host.

[0007] Preferably, the position adjustment mechanism includes two support rods fixedly installed at equal intervals at 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 is in contact with the bottom of the placement plate, which can provide support for the bottom of the placement plate. Three screw rods one are rotatably installed between the inner wall of the bottom of the test bench body and the inner side of the installation box at equal intervals. A screw rod two is arranged between two adjacent screw rods one. The number of the screw rods two is two. The top and the bottom of the screw rod two are respectively rotatably installed on the inner side of the installation box and the inner wall of the bottom of the test bench body. The pitch of the screw rod one is greater than the pitch of the screw rod two. The three screw rods one and the two screw rods two are respectively located below the five placement plates. The three screw rods one and the two screw rods two are respectively matched with the five moving blocks. When the screw rod one and the screw rod two rotate, they can drive the corresponding moving blocks to move upward, and the moving speed of the moving blocks on the screw rod two is less than the moving speed of the moving blocks on the screw rod one. Four telescopic rods are fixedly installed in a rectangular array distribution between the bottom of the placement plate and the inner side of the test bench body to provide 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. 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 one, the two screw rods two and the output end of the driving motor. The driving motor can drive the screw rod one and the screw rod two to rotate synchronously through the synchronous belt, and the synchronous belt is located inside the installation box.

[0008] Preferably, the wire clamping mechanism includes a positioning box arranged below the wire socket. The positioning box is fixedly installed at the bottom of the detection host. A rotating cylinder is rotatably installed inside the positioning box. Gear one is fixedly installed at both ends of the rotating cylinder. When the rotating cylinder rotates, it can drive gear one to rotate. A positioning strip fixedly installed inside the positioning box is arranged outside gear one. A rack sleeve box that cooperates with gear one is slidably installed outside the positioning strip. Gear one can drive the rack sleeve box to move, and the positioning strip can provide limit and guidance for the movement of the rack sleeve box. A moving plate is fixedly installed outside the rack sleeve box. Two mounting rods symmetrically distributed on both sides of the moving plate are rotatably installed inside the positioning box. Two symmetrically distributed gear two are fixedly installed outside the mounting rods. A plurality of teeth that cooperate with gear two are provided on both sides of the moving plate. When the moving plate moves, it can drive the two gear two to rotate in opposite directions through the teeth on its outside. An arc-shaped clamp one extending outside the positioning box is arranged below gear two. Arc-shaped clamp one is fixedly installed outside the mounting rod. An arc-shaped clamp two is arranged at one end of arc-shaped clamp one away from the mounting rod. The wire is received and positioned by arc-shaped clamp one and arc-shaped clamp two.

[0009] Preferably, the wire positioning mechanism includes a sliding rod slidably installed inside the rotating cylinder. The cross-section of the sliding rod and the inside of the rotating cylinder are both corresponding polygonal structures, so that when the sliding rod rotates, it can drive the rotating cylinder to rotate. A pressing rod is fixedly installed at the top of the sliding rod. A pressing block is rotatably installed at the top end of the pressing rod. A cavity for the pressing block to be limited and slide is fixedly installed outside the detection host. A sleeve block is fixedly installed inside the cavity. The pressing rod is slidably installed inside the sleeve block. Two helical grooves symmetrically distributed about the center are provided on the outside of the pressing rod. A helical strip that cooperates with the helical grooves on the pressing rod is provided inside the sleeve block. When the pressing rod moves vertically up and down, it can rotate through the cooperation of the helical grooves and the helical strip. A limiting frame is fixedly installed outside the wire socket. A sliding cavity for the limiting frame to be limited and slide is provided inside the detection host. The top end of the pressing block is an arc-shaped structure. The bottom of the limiting frame is an inclined surface structure and is in contact with the arc surface of the pressing block. When the limiting frame moves, it can push the pressing block downward through its inclined surface. Two symmetrically distributed spring one are fixedly installed between the inside of the wire socket and the inside of the sliding cavity to facilitate the reset of the wire socket. A spring two is fixedly installed between the bottom of the pressing block and the sleeve block to facilitate the reset of the pressing block.

[0010] 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.

[0011] Preferably, the first arc-shaped clip is butted against the second arc-shaped clip through a torsion spring rod. A limiting block is fixedly installed at one end of the second arc-shaped clip close to the first arc-shaped clip. A limiting groove for the limiting block to be inserted into is formed on the outer side of the first arc-shaped clip, which is convenient for directly inserting a wire with a smaller size between the second arc-shaped clip and the first arc-shaped clip.

[0012] Preferably, rubber soft pads are fixedly installed on the concave arc surfaces of the first arc-shaped clip and the second arc-shaped clip to provide protection for the wire.

[0013] Preferably, an arc-shaped contact block is fixedly installed at one end of the second arc-shaped clip away from the first arc-shaped clip, which is convenient for the wire to push the second arc-shaped clip to swing.

[0014] Preferably, a baffle is fixedly installed at one end of the moving plate away from the rack sleeve box. One end of the baffle away from the moving plate is of an arc-shaped structure. An opening for the moving plate to be limited and slide is formed on the outer side of the positioning box, which is convenient for resisting the wire entering between the two first arc-shaped clips.

[0015] Preferably, an inclined platform is formed on the top of the positioning box. The inclined platform is fixedly installed on one side of the detection host close to the wire socket, which is convenient for the wire to vertically enter between the two second arc-shaped clips downward.

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

[0017] Through the position adjustment mechanism of the present invention, the heights of the three placing plates and the two placing plates can be adjusted together, and the rising speed of three of the placing plates is greater than that of the other two placing plates. The heights of the three placing plates are higher than those of the other two placing plates, so that electrical appliances with shorter wires can be placed on the higher placing plates, and electrical appliances with longer wires can be placed on the lower placing plates, which is convenient for testing electrical appliances with more wire lengths, solves the problem of wire pulling, and thus improves the convenience of the relay protection test.

[0018] Through the wire clamping mechanism of the present invention, the first arc-shaped clip and the second arc-shaped clip can receive and position the wire inserted into the wire socket, realize the one-to-one positioning of the wire, solve the problem of wire mess, and thus achieve the effect of convenient wire storage and improve the cleanliness of the test bench body.

[0019] Through the wire positioning mechanism of the present invention, when the plug of the wire is docked with the wire socket, the two first arc-shaped clips can be swung open, which is convenient for the staff to place the wire between the two first arc-shaped clips, and enables the first arc-shaped clip to cooperate with the second arc-shaped clip to quickly receive the wire, thereby improving the efficiency of wire storage and facilitating the quick arrangement of the wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 Schematic diagram of the test bench body and the placement plate in the present invention;

[0022] Figure 3 Schematic diagram of the installation box and the driving motor in the present invention;

[0023] Figure 4 Schematic diagram of the wire socket and the positioning box in the present invention;

[0024] Figure 5 is Figure 4 Schematic diagram of the enlarged structure of area A in;

[0025] Figure 6 Schematic diagram of the moving plate and the rotating cylinder in the present invention;

[0026] Figure 7 is Figure 6 Schematic diagram of the enlarged structure of area B in;

[0027] Figure 8 Schematic diagram of the first arc-shaped clamp and the rubber soft pad in the present invention.

[0028] 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. First screw; 10. Second screw; 11. Telescopic rod; 12. Driving motor; 13. Synchronous belt; 14. Positioning box; 15. Rotating cylinder; 16. First gear; 17. Positioning strip; 18. Rack sleeve box; 19. Moving plate; 20. Installation rod; 21. Second gear; 22. First arc-shaped clamp; 23. Second arc-shaped clamp; 24. Pressing rod; 25. Pressing block; 26. Sleeve block; 27. Limit frame; 28. First spring; 29. Second spring; 30. Guardrail; 31. Slide bar; 32. Limit block; 33. Rubber soft pad; 34. Arc-shaped contact block; 35. Baffle. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1: Please refer to Figures 1 - 8, A relay protection test bench in the illustration includes a test bench body 1 and a detection host 2 fixedly installed on the top of the test bench body 1. There are five wire sockets 3 arranged at equal intervals on the outside of the detection host 2 for inserting the plugs of wires. A test panel 4 is fixedly installed on one side of the detection host 2 close to the wire socket 3, which is convenient for operating and displaying the test data of the wires. There are five placement boards 5 arranged at equal intervals on the inside of the test bench body 1 for placing electrical appliances; it also includes: a position adjustment mechanism for adjusting the height of the five placement boards 5, and the position adjustment mechanism is installed on the inside of the test bench body 1; a wire clamping mechanism for storing the wires outside the wire socket 3, and the wire clamping mechanism is installed at the bottom of the detection host 2; a wire positioning mechanism for quickly positioning the wires outside the wire socket 3, and the wire positioning mechanism is installed on the outside of the detection host 2.

[0031] The position adjustment mechanism includes two support rods 6 fixedly installed at equal intervals at the bottom of the placement board 5. A moving block 7 is fixedly installed between the bottom ends of the four support rods 6. An installation box 8 is fixedly installed on the inside of the test bench body 1. The top of the installation box 8 is in contact with the bottom of the placement board 5, which can provide support for the bottom of the placement board 5. Three screw rods 1 9 arranged at equal intervals are rotatably installed between the inner wall of the bottom of the test bench body 1 and the inside of the installation box 8. A screw rod 2 10 is arranged between two adjacent screw rods 1 9. The number of screw rods 2 10 is two. The top and bottom ends of the screw rod 2 10 are respectively rotatably installed on the inside of the installation box 8 and the inner wall of the bottom 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 boards 5. The three screw rods 1 9 and the two screw rods 2 10 are respectively matched with the five moving blocks 7, so that when the screw rod 1 9 and the screw rod 2 10 rotate, they can drive the corresponding moving blocks 7 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 arranged in a rectangular array are fixedly installed between the bottom of the placement board 5 and the inside of the test bench body 1 to provide limit and guidance for the movement of the placement board 5. A driving motor 12 is fixedly installed on the inside of the test bench body 1. The output end of the driving motor 12 is rotatably installed on the inside of the installation box 8. A synchronous belt 13 is rotatably installed between the three screw rods 1 9, the two screw rods 2 10 and the output end of the driving motor 12. The driving motor 12 can drive the screw rod 1 9 and the screw rod 2 10 to rotate synchronously through the synchronous belt 13. The synchronous belt 13 is located inside the installation box 8;

[0032] The driving motor 12 can drive the three first screws 9 and the two second screws 10 to rotate synchronously through the synchronous belt 13, so that the first screws 9 and the second screws 10 drive the moving block 7 to move upward. The moving block 7 pushes the placing plate 5 to move upward through the support rod 6. The placing plate 5 moves upward smoothly under the guiding and support of the wires of the four telescopic rods 11. Since the pitch of the first screw 9 is greater than the pitch of the second screw 10, the moving speed of the moving block 7 on the first screw 9 is greater than the moving speed of the moving block 7 on the second screw 10. The staff can place the electrical appliances with shorter wires on the placing plate 5 above the first screw 9, and can place the electrical appliances with longer wires on the placing plate 5 above the second screw 10, which is convenient for the wires to be docked with the wire socket 3, solves the problem of wire pulling, and thus improves the convenience of the relay protection test.

[0033] 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 cylinder 15 is rotatably installed inside the positioning box 14. Gear one 16 is fixedly installed at both ends of the rotating cylinder 15. When the rotating cylinder 15 is rotated, it can drive the gear one 16 to rotate. A positioning strip 17 fixedly installed inside the positioning box 14 is arranged outside the gear one 16. A rack sleeve box 18 matched with the gear one 16 is slidably installed outside the positioning strip 17. The gear one 16 can drive the rack sleeve box 18 to move. The positioning strip 17 can provide limit and guidance for the movement of the rack sleeve box 18. A moving plate 19 is fixedly installed outside the rack sleeve box 18. Two mounting rods 20 symmetrically distributed on both sides of the moving plate 19 are rotatably installed inside the positioning box 14. Gear two 21 symmetrically distributed is fixedly installed outside the mounting rod 20. A plurality of teeth matching with the gear two 21 are provided on both sides of the moving plate 19. When the moving plate 19 moves, it can drive the two gear two 21 to rotate in opposite directions through the teeth outside it. Below the gear two 21 is an arc-shaped clip one 22 extending outside the positioning box 14. The arc-shaped clip one 22 is fixedly installed outside the mounting rod 20. An arc-shaped clip two 23 is arranged at one end of the arc-shaped clip one 22 away from the mounting rod 20. The wire is received and positioned by the arc-shaped clip one 22 and the arc-shaped clip two 23;

[0034] Rotating the rotating cylinder 15 can drive the two gear one 16 to rotate synchronously, so that the gear one 16 drives the rack sleeve box 18 to move along the outside of the positioning strip 17. The rack sleeve box 18 drives the corresponding two gear two 21 to rotate in opposite directions through the teeth outside the moving plate 19, so that the two gear two 21 drive the two arc-shaped clip one 22 to swing and open. The staff can insert the wire between the two arc-shaped clip one 22 and the two arc-shaped clip two 23, and the arc-shaped clip one 22 and the arc-shaped clip two 23 receive the wire, realizing the one-to-one positioning of the wire, solving the problem of wire mess, and thus achieving the effect of facilitating wire storage and improving the cleanliness of the test bench body 1.

[0035] The wire alignment mechanism includes a sliding rod 31 slidably installed inside the rotating cylinder 15. The cross-section of the sliding rod 31 and the inner side of the rotating cylinder 15 are both corresponding polygonal structures, so that when the sliding rod 31 rotates, it can drive the rotating cylinder 15 to rotate. A pressing rod 24 is fixedly installed at the top of the sliding rod 31. A pressing block 25 is rotatably installed at the top end of the pressing rod 24. A cavity for the pressing block 25 to slide and be limited is fixedly installed on the outside of the detection host 2. A sleeve block 26 is fixedly installed inside the cavity. The pressing rod 24 is slidably installed inside the sleeve block 26. Two helical grooves are symmetrically distributed on the outside of the pressing rod 24. A helical strip is arranged inside the sleeve block 26 and is matched with the helical grooves on the pressing rod 24. When the pressing rod 24 moves vertically up and down, it can rotate through the cooperation of the helical grooves and the helical strip. A limiting frame 27 is fixedly installed on the outside of the wire socket 3. A sliding cavity for the limiting frame 27 to slide and be limited is arranged inside the detection host 2. The top end of the pressing block 25 is an arc-shaped structure. The bottom of the limiting frame 27 is an inclined surface structure and is in contact with the arc surface of the pressing block 25. When the limiting frame 27 moves, it can push the pressing block 25 to move downward through its inclined surface. Two symmetrically distributed first springs 28 are fixedly installed between the inside of the wire socket 3 and the inside of the sliding cavity, which is convenient for the wire socket 3 to reset. A second spring 29 is fixedly installed between the bottom of the pressing block 25 and the sleeve block 26, which is convenient for the pressing block 25 to move and reset;

[0036] When the staff docks the plug of the wire with the wire socket 3, it can push the wire socket 3 to move, so that the wire socket 3 drives the limiting frame 27 to move along the sliding cavity of the detection host 2 and compresses the first spring 28. The inclined surface of the limiting frame 27 can push the arc surface at the top of the pressing block 25, so that the pressing block 25 moves downward along the cavity of the detection host 2. The pressing block 25 drives the pressing rod 24 to move synchronously and compresses the second spring 29. The helical grooves on the pressing rod 24 move along the helical strips of the sleeve block 26, so that the pressing rod 24 can rotate when moving downward. The pressing rod 24 can drive the rotating cylinder 15 to rotate through the sliding rod 31, so that the rotating cylinder 15 can swing open the two arc-shaped clips 22, and the wire can enter between the arc-shaped clip 22 and the arc-shaped clip 23. At this time, the staff can release the wire socket 3, and use the resilience of the first spring 28 and the second spring 29 to automatically reset the wire socket 3 and the pressing block 25, and the arc-shaped clip 22 and the arc-shaped clip 23 swing and reset, realizing the automatic storage of the wire, thereby improving the efficiency of wire storage and facilitating the rapid sorting of the wire.

[0037] Working principle: First, the staff starts the driving motor 12, so that the driving motor 12 drives the three first screws 9 and the two second screws 10 to rotate synchronously through the synchronous belt 13. The first screw 9 and the second screw 10 respectively drive the corresponding moving blocks 7 to move upward, so that the moving blocks 7 push the placing plate 5 upward through the two support rods 6, and the placing plate 5 stretches the telescopic rod 11. Since the pitch of the first screw 9 is greater than the pitch of the second screw 10, the moving speed of the moving block 7 on the first screw 9 is greater than the moving speed of the moving block 7 on the second screw 10, and the height of the placing plate 5 directly above the first screw 9 is higher than the height of the placing plate 5 directly above the second screw 10. Then, the staff places the electrical appliance with a shorter wire on the placing plate 5 above the first screw 9, and places the electrical appliance with a longer wire on the placing plate 5 above the second screw 10. Subsequently, the staff inserts the plug of the wire into the wire socket 3 directly above, 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 first spring 28. The inclined surface of the limit frame 27 pushes the arc surface at the top of the pressing block 25, so that the pressing block 25 moves downward along the cavity of the detection host 2. The pressing block 25 drives the pressing rod 24 to move synchronously and compresses the second spring 29. The spiral groove on the pressing rod 24 moves along the spiral strip of the sleeve block 26, so that the pressing rod 24 rotates while moving downward. The pressing rod 24 drives the sliding rod 31 to rotate and move downward synchronously. At this time, the sliding rod 31 moves downward along the inner side of the rotating cylinder 15 and drives the rotating cylinder 15 to rotate. The rotating cylinder 15 drives the two first gears 16 to rotate synchronously, so that the first gears 16 drive the rack sleeve box 18 to move along the outer side of the positioning strip 17. The rack sleeve box 18 drives the moving plate 19 to move synchronously, so that the moving plate 19 drives the corresponding two second gears 21 to rotate in opposite directions through the two teeth on its outer side. The second gears 21 drive the first arc-shaped clamps 22 to rotate, so that the two first arc-shaped clamps 22 drive the corresponding two second arc-shaped clamps 23 to swing and open. The wire can then enter between the two first arc-shaped clamps 22 and the two second arc-shaped clamps 23. Then, the staff releases the wire socket 3, and uses the resilience of the first spring 28 to push the limit frame 27 on the wire socket 3 to reset. The inclined surface of the limit frame 27 moves away from the arc surface of the pressing block 25, and uses the resilience of the second spring 29 to push the pressing block 25 to reset upward. The pressing rod 24 can then move upward and rotate in the reverse direction, realizing the reverse rotation of the rotating cylinder 15. The two first arc-shaped clamps 22 can then swing and reset, so that the two first arc-shaped clamps 22 and the two second arc-shaped clamps 23 store the wire. Finally, the staff starts the detection host 2 through the test panel 4, so that the detection equipment tests the wire, thus achieving the effect of safety testing, improving the safety of the relay protection test and the convenience of wire storage, and ensuring the cleanliness of the test bench body 1.

[0038] Embodiment 2: Please refer to Figures 6 - 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.

[0039] 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.

[0040] Example 3: Please refer to Figures 1 - 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.

[0041] 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.

[0042] It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or apparatus comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or apparatus.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and 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: The test bench body and the detection host fixedly installed on the top of the test bench body, the outer side of the detection host is provided with five wire sockets distributed at equal distances, a test panel is fixedly installed on the side of the detection host close to the wire sockets, and the inner side of the test bench body is provided with five placement boards distributed at equal distances; Also includes: A positioning mechanism is used to adjust the height of the five placement plates. The positioning mechanism is installed on the inner side of the test bench body. The positioning mechanism includes two support rods that are equidistantly fixedly installed on the bottom of the placement plate. A moving block is fixedly installed between the bottom ends of the four support rods. A mounting box is fixedly installed on the inner side of the test bench body. Three screw rods 1 that are equidistantly distributed are rotatably installed between the bottom inner wall of the test bench body and the inner side of the mounting box. A screw rod 2 is arranged between two adjacent screw rods 1. The number of screw rods 2 is two. The three screw rods 1 and the two screw rods 2 are matched with the five moving blocks respectively. The wire clamping mechanism is used for storing the wires on the outside of the wire socket. The wire clamping mechanism is installed at the bottom of the detection host. The wire clamping mechanism includes a positioning box arranged below the wire socket. The positioning box is fixedly installed at the bottom of the detection host. A rotating drum is rotatably installed on the inner side of the positioning box. Gear 1 is fixedly installed on both ends of the rotating drum. 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 matched with gear 1 is slidably installed on the outer side of the positioning strip. A moving plate is fixedly installed on the outer side of the rack box. Two mounting rods symmetrically distributed on both sides of the moving plate are rotatably installed on the inner side of the positioning box. Two symmetrically distributed gears 2 are fixedly installed on the outer side of the mounting rod. A plurality of teeth matched with gear 2 are provided on both sides of the moving plate. An arc-shaped clamp 1 extending to the outer side of the positioning box is arranged below the gear 2. The arc-shaped clamp 1 is fixedly installed on the outer side of the mounting rod. An arc-shaped clamp 2 is arranged on the end of the arc-shaped clamp 1 away from the mounting rod. The wire fixing mechanism is used for quickly positioning the wire outside the wire socket. The wire fixing mechanism is installed on the outside of the detection host. The wire fixing mechanism includes a sliding rod slidably installed 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. A pressure rod is fixedly installed on the top of the sliding rod, and a pressure block is rotatably installed on the top of the pressure rod. A cavity for limiting the sliding of the pressure block is fixedly installed on the outside of the detection host, and a sleeve block is fixedly installed on the inside of the cavity. The pressure rod is slidably installed on the inner side of the sleeve block. Two spiral grooves symmetrically distributed in the center are provided on the outside of the pressure rod, and a spiral strip matching the spiral groove on the pressure rod is provided on the inside of the sleeve block. A limited position frame is fixedly installed on the outside of the wire socket, and a sliding cavity for limiting the sliding of the limit frame is provided on the inside of the detection host. The top of the pressure block is an arc structure, and the bottom of the limit frame is an inclined structure and contacts the arc surface of the pressure block. Two symmetrically distributed springs are fixedly installed between the inner side of the wire socket and the inner side of the sliding cavity, and a spring 2 is fixedly installed between the bottom of the pressure block and the sleeve block.

2. A relay protection test bench according to claim 1, characterized in that: The positioning mechanism also includes four telescopic rods fixedly installed in a rectangular array between the bottom of the placement plate and the test bench body, the top of the installation box is in contact with the bottom of the placement plate, the top and bottom ends of the screw rod 2 are rotatably installed on the inner side of the installation box and the bottom inner wall of the test bench body respectively, 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 under the five placement plates, a driving motor is fixedly installed on the inner side of the test bench body, 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, and the synchronous belt is located on the inner side of the installation box.

3. A relay protection test bench according to claim 1, characterized in that: Two symmetrically distributed guardrails are fixedly installed on the top of the placement plate.

4. A relay protection test bench according to claim 1, characterized in that: The arc clamp one is butted with the arc clamp two through a coil spring rod, a limit block is fixedly installed on one end of the arc clamp two close to the arc clamp one, and a limit groove for the limit block to be inserted is provided on the outer side of the arc clamp one.

5. A relay protection test bench according to claim 1, characterized in that: Rubber cushions are fixedly installed on the concave surfaces of the arc surfaces of the first arc clamp and the second arc clamp.

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

7. A relay protection test bench according to claim 1, characterized in that: A baffle is fixedly installed on one end of the moving plate away from the rack sleeve box, and the end of the baffle away from the moving plate is an arc structure. An opening for the moving plate to limit and slide is opened on the outer side of the positioning box.

8. A relay protection test bench according to claim 1, characterized in that: An inclined platform is provided on the top of the positioning box, and the inclined platform is fixedly installed on a side of the detection host close to the wire socket.

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