CN114878953B - Relay protection outlet matrix tester - Google Patents

Abstract

The invention discloses a relay protection outlet matrix tester, which comprises a tester body, wherein a plug socket matched with a plug connector is arranged in the tester body, the relay protection outlet matrix tester also comprises a guide mechanism, the guide mechanism is positioned in the plug socket and comprises a pipe body and a connecting seat, the end surface of the connecting seat is provided with a guide rod, a supporting seat matched with the guide rod is arranged in the plug socket, and the periphery of the pipe body is provided with a guide groove. According to the invention, the socket is arranged in the tester body, the spiral elastic conducting plate is arranged in the socket, the iron core is arranged on the inner side of the conducting plate, and after overload heavy current is generated in a main loop due to improper operation of the tester, the iron core is moved by a magnetic field generated by the conducting plate, so that the conducting plate is compressed, and further, under the cooperation of the guide mechanism, the conducting plate in a compressed state can release the elastic force, so that the plug connector of the wire is pushed open, and the wire is disconnected.

Description

Relay protection outlet matrix tester

Technical Field

The invention relates to the technical field of relay protection tests, in particular to a relay protection outlet matrix tester.

Background

The relay protection in the power system is various and has complex logic, and the protection ranges of different elements have repeated cross, for example, the bus differential protection range includes all the devices connected to the bus, such as lines, main transformers, etc. When new equipment is checked and accepted for operation and old equipment is subjected to annual regular inspection work, how to check the correctness of each protection logic is an important part of secondary professional work of relay protection. The trip outlet matrix check is an important link in the protection and regular inspection operation, and is one of main measures for ensuring correct configuration of an outlet loop, preventing mistaken tripping of an operation switch when a system fails, and ensuring normal power supply and safe operation of an electric power system.

Most at present adopt the relay protection tester in the regular checking, and the relay protection tester passes through the wire to be connected, and current wire passes through the bayonet joint to be connected with the socket of tester, and improper leading to the tester major loop overload in personnel's operation because the socket does not possess the ability with the disconnection of wire bayonet joint, and the major loop is in under the heavy current state for a long time, easily leads to the tester to damage, causes bigger accident even.

Disclosure of Invention

The invention aims to: in order to solve the problems, the relay protection outlet matrix tester is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

relay protection export matrix tester, including the tester body, this internal being provided with of tester with bayonet joint complex bayonet socket, still include: the guide mechanism is positioned inside the plug socket and comprises a pipe body and a connecting seat, a guide rod is arranged on the end face of the connecting seat, a supporting seat matched with the guide rod is arranged inside the plug socket, a guide groove is formed in the periphery of the pipe body, and a guide block matched with the guide groove is arranged on the inner wall of the plug socket; the conducting strip is positioned inside the inserting seat, an insulating sleeve is arranged on the outer side of the conducting strip in a covering mode, and the conducting strip is of a spiral structure and has elasticity; the iron core is positioned on the inner side of the spiral structure of the conducting plate and is matched with the guide rod through the driving assembly; the clamping mechanism is located on the outer side of the guide mechanism and matched with the guide mechanism, the clamping mechanism comprises a first circular ring and a second circular ring, a sliding rod is arranged between the first circular ring and the second circular ring, and a clamping block is arranged at the end part of the sliding rod.

Preferably, the conducting strip and the pipe body are coaxially distributed, one end of the conducting strip is fixedly connected with the plug socket, the other end of the conducting strip extends to the outside from the inside of the insulating sleeve, and the width of the conducting strip in the radial direction of the pipe body decreases progressively from the open end to the fixed end.

Preferably, the socket is a cylindrical structure with an open end, the pipe body is rotatably connected with the connecting seat, the connecting seat is annular, the guide rod penetrates through the supporting seat and is in sliding connection with the supporting seat, the supporting seat is fixedly connected to the inner surface wall of the socket, the guide rod and the supporting seat are both provided with a plurality of through holes which are uniformly distributed in an annular shape around the pipe body, and the closed end face of the socket is provided with a plurality of through holes through which the guide rod penetrates.

Preferably, the guide way is provided with a plurality ofly to encircle body annular evenly distributed, adjacent guide way communicates each other, the guide way comprises first cell body, second cell body, third cell body and the fourth cell body that communicates in proper order, the axial direction of body is all followed to second cell body and fourth cell body and distributes, the degree of depth of first cell body and second cell body is the same, the degree of depth of third cell body is greater than first cell body to it is the same with the degree of depth of fourth cell body one end, the degree of depth of the fourth cell body other end is the same with first cell body.

Preferably, the inner wall of the socket is fixedly connected with a fixing piece, a gap is formed between the fixing piece and the inner wall of the socket, a guide bolt penetrates through the inside of the fixing piece, the guide bolt is fixedly connected with the guide block, an elastic piece is arranged between the fixing piece and the guide block, the guide block is in sliding fit with the guide groove, and the fit side of the guide block is of an arc-shaped structure.

Preferably, the driving assembly comprises a driving rod fixedly connected to the outer side of the iron core, the open end of the driving rod is sleeved on the outer side of the guide rod, the open end of the driving rod is provided with a sliding groove, the sliding block is connected to the inside of the sliding groove in a sliding mode, a clamping groove matched with the sliding block is formed in the surface of the guide rod, the clamping groove is located on one side, far away from the iron core, of the guide rod, the magnetic block is fixedly connected to the inner wall of the plug socket in the extending direction of the driving rod, and the sliding block is made of a magnetic metal material.

Preferably, the terminal surface of first ring has a plurality of annular evenly distributed's intercommunication groove, the intercommunication groove comprises the fifth cell body and the sixth cell body that communicate each other, the tip that fifth cell body and sixth cell body kept away from each other all is close to the periphery of first ring is kept away from to the intercommunication end of the two, be provided with the logical groove of direction of a plurality of annular evenly distributed on the second ring, the logical groove of direction sets up along the radial direction of second ring, the one end of slide bar is located the intercommunication inslot, and the other end runs through the logical groove of direction and clamp splice fixed connection, the clamp splice surface has the sawtooth groove.

Preferably, the first ring is sleeved outside the pipe body and is rotatably connected with the plug socket, magnets which attract each other are embedded in the end faces, close to each other, of the connecting seat and the first ring, the second ring is rotatably connected with the end portion of the pipe body, a limiting groove is formed in the periphery of the second ring, and a limiting rod matched with the limiting groove is arranged on the inner wall of the plug socket.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

this application is through at this internal bayonet socket that sets up of tester, set up the spiral in the bayonet socket and have elastic conducting strip, set up the iron core in the inboard of conducting strip, produce the heavy current back of transshipping because of the operation is improper in making the major loop at the tester, the magnetic field that the conducting strip produced makes the iron core remove to the compression conducting strip, further under guiding mechanism's cooperation, the conducting strip that makes to be in compression state can release elasticity, and then the realization is pushed the bayonet joint of wire open, makes wire disconnection.

This application is through setting up guiding mechanism, and guiding mechanism has set up the body, has set up the guide way on the body to set up in guide way complex guide block in the plug socket inboard, through the cooperation of guide block with the guide way, control body shift position, thereby control the contact and the separation of plug and conducting strip, realize automatic disconnection after the trouble, it is fast to compare to have in manual operation, harm little advantage.

This application is through setting up guiding mechanism and clamping mechanism, and wherein guiding mechanism's body can rotate around the axis of self under the cooperation of guide block and guide way, and with clamping mechanism cooperation when the pivoted, make clamping mechanism's clamp splice along the radial movement of body, carry out the centre gripping fastening to the bayonet joint to the fastness of bayonet joint when improving the test, simultaneously after breaking down, can loosen the bayonet joint fast, the bayonet joint disconnection of being convenient for.

This application is through setting up the magnetic path in the body, set up the actuating lever between iron core and guide bar, set up spout and slider on the actuating lever, by the attraction of magnetic path and slider, when the non-trouble, fasten the plug connector through clamping mechanism and guiding mechanism, prevent that the direction pine from taking off, when the trouble, through the removal of iron core and make the slider break away from the magnetic path, thereby under the action of gravity, the slider falls into the draw-in groove on the guide bar, drive the guide bar and remove, thereby the cooperation through guiding mechanism and clamping mechanism breaks off being connected of direction. The tester has the advantages of simple structure, stable operation and excellent performance.

Drawings

FIG. 1 is a schematic diagram illustrating an overall structure of a tester according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating an internal structure of a socket provided in an embodiment of the present invention;

FIG. 3 shows an enlarged schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic diagram illustrating a conductive sheet and an insulating sleeve structure provided in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of a first ring end face configuration provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a first ring and clamp block mating arrangement according to an embodiment of the present invention;

FIG. 7 is a schematic diagram illustrating a second annular end face configuration provided in accordance with an embodiment of the present invention;

fig. 8 is a schematic view illustrating a structure of the driving rod and the guide rod provided by the embodiment of the invention.

Illustration of the drawings:

1. a tester body; 2. a socket; 3. a pipe body; 4. a connecting seat; 5. a guide rod; 6. a supporting seat; 7. a conductive sheet; 8. an insulating sleeve; 9. a fixing sheet; 10. a guide pin; 11. an elastic member; 12. a guide block; 13. a first tank body; 14. a second tank body; 15. a third tank body; 16. a fourth tank body; 17. a first circular ring; 18. a second circular ring; 19. a guide through groove; 20. a fifth tank body; 21. a sixth tank body; 22. a slide bar; 23. a clamping block; 24. a through hole; 25. an iron core; 26. a drive rod; 27. a chute; 28. a slider; 29. a card slot; 30. a magnetic block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution:

relay protection export matrix tester, including tester body 1, this internal being provided with of tester 2 with bayonet joint complex socket 2 still includes: the guide mechanism is positioned inside the plug socket 2 and comprises a pipe body 3 and a connecting seat 4, the end face of the connecting seat 4 is provided with a guide rod 5, the inside of the plug socket 2 is provided with a supporting seat 6 matched with the guide rod 5, the periphery of the pipe body 3 is provided with a guide groove, and the inner wall of the plug socket 2 is provided with a guide block 12 matched with the guide groove; the conducting strip 7 is positioned inside the inserting seat 2, an insulating sleeve 8 is coated and arranged on the outer side of the conducting strip 7, and the conducting strip 7 is of a spiral structure and has elasticity; an iron core 25, the iron core 25 is positioned at the inner side of the spiral structure of the conducting strip 7 and is matched with the guide rod 5 through a driving component; the clamping mechanism is positioned on the outer side of the guide mechanism and matched with the guide mechanism, the clamping mechanism comprises a first circular ring 17 and a second circular ring 18, a sliding rod 22 is arranged between the first circular ring and the second circular ring, and a clamping block 23 is arranged at the end part of the sliding rod 22.

Specifically, as shown in fig. 2 and 4, the conductive sheet 7 is coaxially distributed with the tube body 3, one end of the conductive sheet 7 is fixedly connected to the plug socket 2, the other end of the conductive sheet extends to the outside from the inside of the insulating sleeve 8, the conductive sheet 7 of the extending portion is fixedly connected to the connection socket 4, and the width of the conductive sheet 7 in the radial direction of the tube body 3 decreases progressively from the open end to the fixed end. This design makes helical structure can pile up, and then saves the space that conducting strip 7 compression took, plays limiting displacement to the bayonet joint simultaneously.

Specifically, as shown in fig. 2, plug socket 2 is the open cylindrical structure of one end, and body 3 rotates with connecting seat 4 to be connected, and connecting seat 4 is the ring shape, and guide bar 5 runs through supporting seat 6 to the two sliding connection, guide bar 5 play direction limiting displacement to body 3, make body 3 only can follow the axial displacement of self. Supporting seat 6 fixed connection all is provided with a plurality ofly at the interior table wall of bayonet socket 2, guide bar 5 and supporting seat 6 to all encircle 3 annular evenly distributed of bodys, have a plurality ofly on the closed end face of bayonet socket 2 in order to pass through guide bar 5's through-hole 24.

Specifically, as shown in fig. 2, the guide way is provided with a plurality ofly, and encircle body 3 annular evenly distributed, adjacent guide way communicates each other, the guide way is by first cell body 13, second cell body 14, third cell body 15 and fourth cell body 16 that communicate in proper order constitute, second cell body 14 and fourth cell body 16 all distribute along the axial direction of body 3, first cell body 13 is the same with the degree of depth of second cell body 14, the degree of depth of third cell body 15 is greater than first cell body 13, and it is the same with the degree of depth of fourth cell body 16 one end, the degree of depth of the other end of fourth cell body 16 is the same with first cell body 13. The first groove body 13 and the third groove body 15 enable the pipe body 3 to rotate under the matching of the guide block 12, and the second groove body 14 and the fourth groove body 16 are used for fixing the pipe body 3 and withdrawing the plug connector.

Specifically, as shown in fig. 2 and 3, a fixing piece 9 is fixedly connected to an inner wall of the socket 2, a gap is formed between the fixing piece 9 and the inner wall of the socket 2, a guide bolt 10 penetrates through the inside of the fixing piece 9, the guide bolt 10 is fixedly connected with a guide block 12, an elastic piece 11 is arranged between the fixing piece 9 and the guide block 12, the guide block 12 is in sliding fit with the guide groove, and the fit side is of a circular arc-shaped structure. The elastic element 11 allows the guide block 12 to be always located in the guide groove and to adapt to different depths of the guide groove. The circular arc structure can reduce the contact surface, thereby reducing friction.

Specifically, as shown in fig. 2, fig. 3 and fig. 8, the driving assembly includes a driving rod 26 fixedly connected to the outside of the iron core 25, an open end of the driving rod 26 is sleeved on the outside of the guiding rod 5, and an open end of the driving rod has a sliding slot 27, an inner portion of the sliding slot 27 is slidably connected to a sliding block 28, a surface of the guiding rod 5 has a clamping slot 29 matched with the sliding block 28, the clamping slot 29 is located on one side of the guiding rod 5 away from the iron core 25, a magnetic block 30 in the extending direction of the driving rod 26 is fixedly connected to the inner wall of the socket 2, and the sliding block 28 is made of a magnetic metal material. A spring is arranged between the iron core 25 and the plug socket 2, after the overload large current flowing through the conductive sheet 7 generates a magnetic field to enable the iron core 25 to be stressed to overcome the elasticity of the spring, the iron core 25 moves to drive the driving rod 26 to move, the sliding block 28 loses attraction of the magnetic block 30 and then falls into the clamping groove 29, the guide rod 5 is driven to move along with the movement of the driving rod 26, so that the pipe body 3 moves, the guide block 12 enters the fourth groove body 16, the elasticity of the conductive sheet 7 is released, and the plug socket is separated from the conductive sheet 7.

Specifically, as shown in fig. 2, fig. 5, fig. 6 and fig. 7, the end face of the first circular ring 17 has a plurality of communicating grooves which are uniformly distributed in a ring shape, each communicating groove is composed of a fifth groove body 20 and a sixth groove body 21 which are communicated with each other, the end portions of the fifth groove body 20 and the sixth groove body 21 which are far away from each other are close to the periphery of the first circular ring 17, the communicating ends of the fifth groove body and the sixth groove body are far away from the periphery of the first circular ring 17, the fifth groove body 20 corresponds to the first groove body 13, the guide block 12 moves from one end of the first groove body 13 to the other end in the process, the slide bar 22 moves from one end of the fifth groove body 20 to the other end and is close to the pipe body 3 under the effect of the sixth groove body 21, so that the clamp blocks 23 abut against the plug, and the plurality of clamp blocks 23 abut against the plug from the periphery synchronously, and the fastening of the plug is realized. The second ring 18 is provided with a plurality of guide through grooves 19 which are uniformly distributed in an annular shape, the guide through grooves 19 are arranged along the radial direction of the second ring 18, one end of each slide rod 22 is located in each communication groove, the other end of each slide rod runs through the guide through grooves 19 and the clamping blocks 23 to be fixedly connected, each clamping block 23 is provided with a sawtooth-shaped groove on the surface, and the sawtooth-shaped grooves are used for increasing friction to enable the plug-in connector to be difficult to loosen. First ring 17 cover is established in the outside of body 3 to rotate with bayonet socket 2 and be connected, the terminal surface that connecting seat 4 and first ring 17 are close to each other all inlays and is equipped with the magnet of inter attraction, and the relative bayonet socket 2's of first ring 17 position does not change, and it can only rotate under the attraction of connecting seat 4 and magnet, realizes connecting seat 4 and first ring 17 synchronous revolution. The second ring 18 is rotatably connected with the end of the pipe body 3, a limit groove is formed in the periphery of the second ring 18, and a limit rod matched with the limit groove is arranged on the inner wall of the plug socket 2. The matching of the limiting groove and the limiting rod enables the second ring 18 to be driven by the pipe body 3 to move along the axial direction of the pipe body 3.

The second ring 18 can also be fixedly connected with the socket 2 and not connected with the tube 3, which can also limit the sliding rod 22.

In summary, in the relay protection outlet matrix tester provided in this embodiment, when in use, the plug of the wire is inserted into the plug base 2, the plug passes through the inside of the tube 3 and contacts the conductive sheet 7, the spiral structure of the conductive sheet 7 is compressed along with the continuous entering of the plug, and simultaneously generates an elastic force, and drives the tube 3 to move synchronously along with the end of the conductive sheet 7, while the tube 3 moves, the guide block 12 moves along the first groove 13, so that the tube 3 rotates, when the plug is inserted to an immovable state, the conductive sheet 7 releases a small portion of the elastic force, so that the guide block 12 enters the end of the third groove 15 along the second groove 14, at this time, the guide block 12 is clamped in the third groove 15, while the tube 3 rotates, the connection base 4 rotates synchronously, further under the attraction of the magnet, the first ring 17 rotates synchronously, the slide rod 22 moves along the fifth groove 20 and the guide through groove 19, so that the clamping block 23 abuts against the plug, thereby realizing fastening; when the plug is detached, the plug is moved into the plug seat 2 for a short distance, in the moving process, the conducting strip 7 is further compressed, the pipe body 3 also moves along with the conducting strip, the guide block 12 enters the fourth groove body 16 along the third groove body 15, the pipe body 3 rotates simultaneously, the plug is loosened, the elasticity of the conducting strip 7 is completely released, the guide block 12 moves along the fourth groove body 16, the first ring 17 rotates while the pipe body 3 rotates, the slide rod 22 resets along the sixth groove body 21 and the guide through groove 19, the clamping block 23 is separated from the plug, and therefore the plug is separated from the plug seat 2 under the elastic action of the conducting strip 7 and the inertia action of the plug; when the conducting strip 7 passes through the overload large current, the magnetic force applied to the iron core 25 by the magnetic field generated by the inner side of the spiral structure of the conducting strip 7 overcomes the elastic force of the spring, the sliding block 28 is far away from the magnetic block 30 by the movement of the driving rod 26, the sliding block 28 enters the clamping groove 29 by the gravity at the moment, the guide rod 5 is driven to move along with the movement of the driving rod 26, the pipe body 3 is further moved, the guide block 12 enters the fourth groove body 16, the elastic force of the conducting strip 7 is released, and the connection of the plug is disconnected.

The previous description of the embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. Relay protection export matrix tester, including tester body (1), be provided with in tester body (1) with bayonet joint complex bayonet socket (2), its characterized in that still includes: the guide mechanism is positioned inside the plug socket (2) and comprises a pipe body (3) and a connecting seat (4), a guide rod (5) is arranged on the end face of the connecting seat (4), a supporting seat (6) matched with the guide rod (5) is arranged inside the plug socket (2), a guide groove is formed in the periphery of the pipe body (3), and a guide block (12) matched with the guide groove is arranged on the inner wall of the plug socket (2); the conducting strip (7) is positioned inside the inserting seat (2), an insulating sleeve (8) is arranged on the outer side of the conducting strip (7) in a covering mode, and the conducting strip (7) is of a spiral structure and has elasticity; the iron core (25) is positioned on the inner side of the spiral structure of the conducting strip (7) and is matched with the guide rod (5) through a driving assembly; the driving assembly comprises a driving rod (26) fixedly connected to the outer side of an iron core (25), the open end of the driving rod (26) is sleeved on the outer side of the guide rod (5), the open end of the driving rod is provided with a sliding groove (27), a sliding block (28) is connected to the inside of the sliding groove (27) in a sliding mode, a clamping groove (29) matched with the sliding block (28) is formed in the surface of the guide rod (5), the clamping groove (29) is located on one side, away from the iron core (25), of the guide rod (5), a magnetic block (30) in the extending direction of the driving rod (26) is fixedly connected to the inner wall of the plug socket (2), and the sliding block (28) is made of a magnetic metal material; the clamping mechanism is positioned on the outer side of the guide mechanism and matched with the guide mechanism, the clamping mechanism comprises a first circular ring (17) and a second circular ring (18), a sliding rod (22) is arranged between the first circular ring and the second circular ring, and a clamping block (23) is arranged at the end part of the sliding rod (22).

2. The relay protection outlet matrix tester according to claim 1, wherein the conductive sheet (7) is coaxially distributed with the tube (3), and one end of the conductive sheet (7) is fixedly connected with the socket (2), and the other end extends from the inside to the outside of the insulating sleeve (8), and the width of the conductive sheet (7) along the radial direction of the tube (3) decreases from the open end to the fixed end.

3. The relay protection outlet matrix tester according to claim 1, wherein the socket (2) is a cylindrical structure with an open end, the tube (3) is rotatably connected with the connecting seat (4), the connecting seat (4) is circular ring-shaped, the guide rod (5) penetrates through the supporting seat (6) and is slidably connected with the supporting seat, the supporting seat (6) is fixedly connected with the inner surface wall of the socket (2), the guide rod (5) and the supporting seat (6) are both provided with a plurality of through holes (24) which are uniformly distributed in a ring shape around the tube (3), and the closed end surface of the socket (2) is provided with a plurality of through holes (24) for penetrating through the guide rod (5).

4. The relay protection outlet matrix tester as claimed in claim 1, wherein the guide grooves are provided in plurality and annularly and uniformly distributed around the tube body (3), adjacent guide grooves are communicated with each other, the guide grooves are composed of a first groove body (13), a second groove body (14), a third groove body (15) and a fourth groove body (16) which are sequentially communicated, the second groove body (14) and the fourth groove body (16) are all distributed along the axial direction of the tube body (3), the depths of the first groove body (13) and the second groove body (14) are the same, the depth of the third groove body (15) is greater than that of the first groove body (13) and is the same as that of one end of the fourth groove body (16), and the depth of the other end of the fourth groove body (16) is the same as that of the first groove body (13).

5. The relay protection outlet matrix tester according to claim 1, wherein a fixing piece (9) is fixedly connected to an inner wall of the socket (2), a gap is formed between the fixing piece (9) and the inner wall of the socket (2), a guide bolt (10) penetrates through the fixing piece (9), the guide bolt (10) is fixedly connected with a guide block (12), an elastic piece (11) is arranged between the fixing piece (9) and the guide block (12), the guide block (12) is in sliding fit with the guide groove, and a fitting side of the guide block is of a circular arc-shaped structure.

6. The relay protection outlet matrix tester as recited in claim 1, wherein the end face of the first ring (17) has a plurality of communicating grooves uniformly distributed in a ring shape, the communicating grooves are composed of a fifth groove body (20) and a sixth groove body (21) which are communicated with each other, the end portions of the fifth groove body (20) and the sixth groove body (21) which are far away from each other are close to the periphery of the first ring (17), the communicating ends of the fifth groove body and the sixth groove body are far away from the periphery of the first ring (17), the second ring (18) is provided with a plurality of guiding through grooves (19) uniformly distributed in a ring shape, the guiding through grooves (19) are arranged along the radial direction of the second ring (18), one end of the sliding rod (22) is located in the communicating groove, the other end of the sliding rod penetrates through the guiding through grooves (19) and is fixedly connected with the clamping block (23), and the surface of the clamping block (23) has a sawtooth-shaped groove.

7. The relay protection outlet matrix tester according to claim 1, wherein the first ring (17) is sleeved outside the tube body (3) and is rotatably connected with the socket (2), magnets which attract each other are embedded in the end faces of the connecting seat (4) and the first ring (17) which are close to each other, the second ring (18) is rotatably connected with the end of the tube body (3), a limiting groove is formed in the periphery of the second ring (18), and a limiting rod which is matched with the limiting groove is arranged on the inner wall of the socket (2).

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