A grounding switch device for ring main unit

Abstract

The present invention discloses a grounding knife switch device for a ring network cabinet, comprising a cabinet, a cable connected in the cabinet, a grounding knife operating hole provided on the cabinet, a grounding knife operating column provided in the grounding knife operating hole, a docking space for connecting an operating handle provided between the grounding knife operating hole and the grounding knife operating column, and further comprising: a blocking rod, which is movably provided in the cabinet; an actuator, which is provided in the cabinet, and is used to control the blocking rod to move into the docking space to block the operating handle from being inserted into the docking space when the cable is energized, and to control the blocking rod to move away from the docking space when the cable is de-energized. By providing the blocking rod, the present invention can detect the energization of the cable in the cabinet to control the blocking rod to move into the docking space between the grounding knife operating hole and the grounding knife operating column, thereby blocking the insertion of the operating handle. At this time, when the cable is energized, the grounding knife cannot be closed, thereby ensuring the safety of related equipment.

Description

Technical Field

[0001] The invention relates to the technical field of ring network cabinets, and in particular to a grounding switch device for a ring network cabinet. Background Art

[0002] Ring main unit is a group of electrical equipment (high voltage switchgear) installed in a metal or non-metallic insulated cabinet or made into an assembled interval ring main unit. Its core part uses load switches and fuses, which have the advantages of simple structure, small size, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution stations and box-type substations in urban residential areas, high-rise buildings, large public buildings, factories and enterprises and other load centers.

[0003] Patent document CN203895345U, published on October 22, 2014, discloses a solid insulation ring network cabinet grounding knife switch locking device, which relates to the technical field of circuit breaker isolation grounding switch locking. The device covers the grounding knife switch operating hole through two covering methods: electrical linkage covering and mechanical sliding covering, to prevent misoperation. It includes an isolation knife switch operating handle and an inner baffle, and the grounding knife switch operating hole and a safety protection hole are provided on the operating panel in the solid insulation ring network cabinet; an isolation grounding switch and an electrical linkage permanent magnetic operating mechanism are installed in the solid insulation ring network cabinet, a rotating column and a guide column are fixedly provided on the back of the operating panel, and the inner baffle is rotatably connected to the rotating column; an oil line is connected to the opening screw of the permanent magnetic operating mechanism, the other end of the oil line is fixedly connected to the inner baffle, and a tension spring is connected to the inner baffle, and the other end of the tension spring is fixedly connected to the back of the operating panel; a sliding handle is provided in the safety protection hole, and an outer baffle is fixedly connected to the sliding handle.

[0004] Based on the fact that ring main units and KYN28 cabinets are currently widely used in suburban companies, the transition from overhead lines to underground cable switchgear and other devices, and the lack of relevant operating skills and knowledge reserves of company employees, will lead to the closing of the ground knife under energized conditions, thereby causing the upper power supply equipment to trip. If the ring main unit is an off-site primary ring main unit, it will cause impact damage to the equipment in the substation, and even serious damage to the main transformer of the substation. Therefore, there is an urgent need for a ring main unit grounding knife switch device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a ring main unit grounding switch device to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A ring network cabinet grounding knife switch device comprises a cabinet body, a cable connected in the cabinet body, a ground knife operating hole is arranged on the cabinet body, a ground knife operating column is arranged in the ground knife operating hole, a docking space for connecting an operating handle is arranged between the ground knife operating hole and the ground knife operating column, and also comprises: a blocking rod, which is movably arranged in the cabinet body; an actuator, which is arranged in the cabinet body and is used to control the blocking rod to move into the docking space to block the operating handle from being inserted into the docking space when the cable is energized, and to control the blocking rod to move away from the docking space when the cable is de-energized.

[0008] Preferably, the actuator includes a box body fixedly mounted on the cabinet, a sliding hole matching the stop rod is arranged in the box body, a sliding member fixedly connected to the stop rod is elastically and movably arranged in the box body, and a magnetic attraction component for driving the sliding member to move is arranged in the box body.

[0009] Preferably, a sliding groove matching the sliding member is provided in the box body, an elastic groove is provided at one end of the sliding groove, a first elastic member connected to the sliding member is provided in the elastic groove, and a magnetic attraction component is provided at the other end of the sliding groove.

[0010] Preferably, the magnetic attraction assembly includes an electromagnet arranged at the opposite end of the elastic groove of the sliding groove.

[0011] Preferably, the operating handle is provided with a guide groove matching the baffle rod, one end of the guide groove extends to the insertion end of the operating handle, and the other end is provided with a deflection groove matching the baffle rod, a shift block fixedly connected to the baffle rod is slidably provided on the outer side of the box body, and a first limit assembly for limiting the moving range of the sliding part is provided in the box body, and the first limit assembly cancels the limit when the electromagnet is energized and magnetized.

[0012] Preferably, the first limiting assembly comprises a lever which is elastically rotatably arranged in the box body, one end of the lever is provided with a stopper for extending into the sliding groove, and the other end of the lever is provided with an adsorption block corresponding to one side of the electromagnet.

[0013] Preferably, a rotating seat is rotatably connected in the cabinet, and the end of the ground knife operating column away from the ground knife operating hole is rotatably connected to the rotating seat through a delayed torsion component. The delayed torsion component is used to drive the rotating seat to rotate in the same direction and at the same angle after the ground knife operating column rotates a certain angle first.

[0014] Preferably, the delayed torsion assembly includes two opposite bases fixedly arranged at the ends of the ground knife operating column, an arc rod is connected between the two bases, a paddle fixedly connected to the rotating seat is movably sleeved on the arc rod, a second elastic member sleeved on the arc rod is connected between the base and the paddle, a second limit assembly for limiting the movement of the paddle is arranged in the cabinet, and the second limit assembly cancels the limit after the ground knife operating column is rotated a certain angle.

[0015] Preferably, the second limit assembly includes an abutment member elastically and movably arranged in the cabinet, a limit member is fixedly arranged at one end of the abutment member extending outward, the limit member is arranged corresponding to the movable range of the paddle, a first linkage column is arranged to synchronously rotate at one end of the ground knife operating column away from the ground knife operating hole, the rotating seat is connected to a guide sleeve through a support rod, a second linkage column is axially movably arranged in the guide sleeve, the second linkage column is arranged between the abutment member and the first linkage column, one end of the second linkage column is abutted against the abutment member, and the other end is arranged with an extrusion tooth, and one end of the first linkage column is arranged with an extrusion ladder platform wedge-shapedly matched with the extrusion tooth.

[0016] Preferably, a linkage hole is provided in the ground knife operating column, a key block is axially provided in the linkage hole, a key slot matching the key block is axially provided on the outer wall of the first linkage column, and the width of the inner wall of the key slot is greater than the width of the key block.

[0017] In the above technical solution, the beneficial effects of the present invention are:

[0018] The ring network cabinet grounding knife switch device is provided with a baffle rod. When the cable in the cabinet is energized, the actuator detects the energization of the cable to control the baffle rod to move into the docking space between the ground knife operating hole and the ground knife operating column, thereby blocking the insertion of the operating handle, so that the operating handle cannot be smoothly connected to the ground knife operating column. At this time, when the cable is energized, the ground knife cannot be closed, thereby ensuring the safety of related equipment.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the front structure of a cabinet provided in an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the knife switch structure inside a cabinet provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a partial structure of a cabinet in side view provided by an embodiment of the present invention;

[0025] Figure 4 The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 5 A schematic diagram of a front cross-sectional structure of a box body provided by an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of a front cross-sectional structure of a box body through groove provided by an embodiment of the present invention;

[0028] Figure 7 A schematic diagram of the structure of an operating handle provided by an embodiment of the present invention;

[0029] Figure 8 A schematic diagram of the structure of a time-delay torsion assembly provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic diagram of the structure of a first linkage column and a second linkage column provided in an embodiment of the present invention;

[0031] Fig.10 A schematic diagram of the front view structure of the guide sleeve end of the time-delay torsion assembly provided by an embodiment of the present invention;

[0032] Fig.11 A schematic diagram of the front cross-sectional structure of the guide sleeve end of the time-delay torsion assembly provided in an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Cabinet; 2. Ground knife operating hole; 3. Ground knife operating column; 4. Operating handle; 5. Stop rod; 6. Box body; 7. Sliding hole; 8. Sliding member; 9. Sliding groove; 10. Elastic groove; 11. First elastic member; 12. Electromagnet; 13. Guide groove; 14. Deflection groove; 15. Dial block; 16. Lever; 17. Stop block; 18. Adsorption block; 19. Rotating seat; 20. Base; 21. Arc rod ; 22. paddle; 23. second elastic member; 24. abutment member; 25. limit member; 26. first linkage column; 27. support rod; 28. guide sleeve; 29. ​​second linkage column; 30. extrusion tooth; 31. extrusion ladder; 32. linkage hole; 33. key block; 34. keyway; 35. connecting column; 36. through slot; 37. slot; 38. rotating bin; 39. retraction slot; 40. third elastic member. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0036] See also Figure 1-11 A ring network cabinet grounding knife switch device provided by an embodiment of the present invention includes a cabinet 1, a cable is connected inside the cabinet 1, a ground knife operating hole 2 is arranged on the cabinet 1, a ground knife operating column 3 is arranged in the ground knife operating hole 2, and a docking space for connecting an operating handle 4 is arranged between the ground knife operating hole 2 and the ground knife operating column 3. It also includes: a baffle 5, which is movably arranged in the cabinet 1; an actuator, which is arranged in the cabinet 1 and is used to control the baffle 5 to move into the docking space to block the operating handle 4 from being inserted into the docking space when the cable is energized, and to control the baffle 5 to move away from the docking space when the cable is de-energized.

[0037] Specifically, the ground knife operating hole 2 is opened on the front side of the cabinet 1; the ground knife operating hole 2 is coaxially arranged with the ground knife operating column 3; a torsion joint is arranged on one end of the ground knife operating column 3 close to the ground knife operating hole 2, and the torsion joint is preferably in the shape of a polygonal column; the operating handle 4 includes a rotating end and an insertion end, the rotating end is exposed outside the cabinet 1 for manual operation, the insertion end matches the ground knife operating hole 2, and is used to insert the ground knife operating hole 2, and a torque groove matching the torque joint is opened at the end of the insertion end, and when the insertion end is accurately and completely inserted into the ground knife operating hole 2, the torque joint and the torque groove dock with each other, thereby enabling the operating handle 4 and the ground knife operating column 3 to rotate synchronously; the docking space is used to insert the insertion end entity part of the operating handle 4. The extension and retraction direction of the blocking rod 5 is arranged perpendicular to the axial direction of the ground knife operating column 3. Preferably, the blocking rod 5 is vertical and arranged corresponding to the axis of the ground knife operating column 3; the blocking rod 5 extends toward the ground knife operating column 3, that is, the blocking rod 5 extends into the docking space to form a barrier to prevent the insertion of the operating handle 4. Preferably, the blocking position of the blocking rod 5 in the docking space is arranged closer to the ground knife operating hole 2 relative to the torsion joint, thereby making it impossible for the insertion end of the operating handle 4 blocked by the blocking rod 5 to dock with the torsion joint at all; the actuator is used to detect whether the cable is powered on or off, and to control the blocking rod 5 to perform specified movements respectively, specifically: when the cable is powered on, the actuator controls the blocking rod 5 to move and extend toward the ground knife operating column 3 to enter the docking space to form a barrier, and when the cable is not powered on, the actuator controls the blocking rod 5 to move away from the ground knife operating column 3 to maintain the docking space. In addition, a display is provided on the cabinet 1. When the cable is energized, the display lights up, and when the power is off, the display goes out. The cabinet 1 is provided with an audible and visual reminder device, which is used to issue an audible and visual reminder when the cable is energized. The audible and visual reminder device includes a voice prompt function. When the human body is near the ground knife operating hole 2, even if the ground knife is not operated, the alarm will be triggered and a voice broadcast will be made, such as: "The cable is energized, and grounding is prohibited." In actual use of this technical solution, when the cable in the cabinet 1 is energized, the actuator detects the energization of the cable to control the blocking rod 5 to move into the docking space between the ground knife operating hole 2 and the ground knife operating column 3, thereby blocking the insertion of the operating handle 4, so that the operating handle 4 cannot be smoothly connected to the ground knife operating column 3. At this time, when the cable is energized, the ground knife cannot be closed, ensuring the safety of related equipment; and when the cable is de-energized, the actuator controls the blocking rod 5 to move away from the ground knife operating column 3 to keep away from the docking space, so that the operating handle 4 can be used smoothly at this time.

[0038] Compared with the prior art, a ring network cabinet grounding knife switch device proposed in an embodiment of the present invention is equipped with a barrier rod 5. When the cable in the cabinet 1 is energized, the actuator detects the energization of the cable to control the barrier rod 5 to move into the docking space between the ground knife operating hole 2 and the ground knife operating column 3, thereby blocking the insertion of the operating handle 4, making it impossible for the operating handle 4 to smoothly form a connection with the ground knife operating column 3. At this time, when the cable is energized, the ground knife cannot be closed, thereby ensuring the safety of related equipment.

[0039] As a preferred technical solution of this embodiment, the actuator includes a box body 6 fixedly arranged on the cabinet body 1, a sliding hole 7 matching the stop rod 5 is arranged in the box body 6, a sliding member 8 fixedly connected to the stop rod 5 is elastically and movably arranged in the box body 6, and a magnetic attraction component for driving the sliding member 8 to move is arranged in the box body 6. Specifically, a power supply is integrated in the box body 6, and the power supply is preferably a battery or an external power supply; the sliding hole 7 is arranged up and down and passes through the box body 6; the elasticity of the sliding member 8 hinders the downward movement of the sliding member 8; the sliding member 8 is made of a material that can be attracted by magnetism and moved; the magnetic attraction component is arranged on the sliding member 8 On the lower side of the moving part 8, when the magnetic attraction component is magnetized, the sliding part 8 is attracted to move downward, and when the magnetic attraction component is demagnetized, the sliding part 8 is elastically moved upward and reset; a control unit is integrated in the box body 6, which is used to detect the power on and power off of the cable, and control the magnetization or demagnetization of the magnetic attraction component accordingly, specifically: when the cable is powered on, the magnetic attraction component is magnetized, attracting the sliding part 8 to move downward, and the sliding part 8 drives the blocking rod 5 to move downward to approach the ground knife operating column 3, thereby extending into the docking space; when the cable is powered off, the magnetic attraction component is demagnetized, the sliding part 8 elastically resets upward, and drives the blocking rod 5 to move upward to avoid the docking space and maintain its position.

[0040] As the preferred technical solution of this embodiment, a sliding groove 9 matching the sliding member 8 is provided in the box body 6, an elastic groove 10 is provided at one end of the sliding groove 9, a first elastic member 11 connected to the sliding member 8 is provided in the elastic groove 10, and a magnetic attraction component is provided at the other end of the sliding groove 9. Specifically, the sliding groove 9 is provided on one side of the sliding hole 7, the sliding member 8 moves up and down in the sliding groove 9, and the elastic groove 10 is provided at the upper end of the sliding groove 9; the first elastic member 11 is preferably a spring, and the first elastic member 11 keeps pulling the sliding member 8 upward so that the sliding member 8 is not affected by external force and remains at the highest point in the sliding groove 9, which is the initial position of the sliding member 8; the magnetic attraction component is provided at the lower end of the sliding groove 9, and when the magnetic attraction component is magnetized, the attraction of the sliding member 8 is greater than the elastic force generated by the first elastic member 11 on the sliding member 8 at any position in the sliding groove 9.

[0041] As a preferred technical solution of this embodiment, the magnetic attraction component includes an electromagnet 12 arranged at the opposite end of the elastic groove 10 of the sliding groove 9. Specifically, one end of the electromagnet 12 extends to the inner wall of the sliding groove 9. After the electromagnet 12 is energized and magnetized, the magnetic attraction direction of the sliding member 8 is opposite to the pulling direction of the sliding member 8 by the first elastic member 11.

[0042] In another embodiment of the present invention, a guide groove 13 matching the stop rod 5 is provided on the operating handle 4, one end of the guide groove 13 extends to the insertion end of the operating handle 4, and the other end is provided with a deflection groove 14 matching the stop rod 5, a shift block 15 connected to the stop rod 5 is slidably provided on the outer side of the box body 6, and a first limit assembly for limiting the moving range of the sliding member 8 is provided in the box body 6, and the first limit assembly cancels the limit when the electromagnet 12 is energized and magnetized. Specifically, the guide groove 13 is provided along the extension direction of the insertion end of the operating handle 4; the operating handle 4 is completely When inserted into the ground knife operating hole 2, the deflection groove 14 is directly opposite to the bottom of the blocking rod 5; the deflection groove 14 surrounds the axis of the operating handle 4 and extends on both sides of the surrounding direction; the lower end of the blocking rod 5 can be movably embedded in the guide groove 13 or the deflection groove 14; under the limiting action of the first limiting component, the lowest position of the blocking rod 5 is higher than the height position of the blocking rod 5 driven by the magnetic suction component, and at this time, the lower end of the blocking rod 5 is just embedded in the guide groove 13 or the deflection groove 14 on the operating handle 4 in the docking space; the side wall of the blocking rod 5 is fixedly provided with a connecting rod that slides through the box body 6 The connecting column 35, the shift block 15 is movably sleeved on the connecting column 35, and a through slot 36 matching the connecting column 35 is opened on the box body 6, and a slot 37 matching the shift block 15 is provided on the through slot 36. When the blocking rod 5 drops to the lowest position defined by the first limiting assembly, the shift block 15 corresponds to the slot 37, and the shift block 15 can be pushed to insert into the slot 37 to limit the elastic upward movement of the blocking rod 5, so as to keep the lower end of the blocking rod 5 at the height corresponding to the guide groove 13 or the deflection groove 14. Therefore, the guide groove 13 can be used to align with the lower end of the blocking rod 5 at this time. So as to accurately locate the installation angle of the operating handle 4 and promote the smooth docking of the operating handle 4 with the ground knife operating column 3. In addition, when the blocking rod 5 slides to the deflection groove 14, the rotation of the operating handle 4 causes the blocking rod 5 to slide relatively in the deflection groove 14, thereby limiting the operating handle 4 from freely disengaging from the ground knife operating hole 2. In addition, when the operating handle 4 is removed, the shift block 15 can be pulled first, and the shift block 15 is disengaged from the slot 37, and then the blocking rod 5 automatically moves upward elastically to disengage the lower end from the deflection groove 14, so that the operating handle 4 can be freely pulled out of the ground knife operating hole 2.

[0043] As a preferred technical solution of this embodiment, the first limit assembly includes a lever 16 elastically rotatably arranged in the box body 6, a stopper 17 for extending into the sliding groove 9 is arranged at one end of the lever 16, and an adsorption block 18 corresponding to one side of the electromagnet 12 is arranged at the other end of the lever 16. Specifically, a movable warehouse for the movement of the lever 16 is arranged on one side of the electromagnet 12 in the box body 6, and the rotation axis of the lever 16 is arranged near the middle position of its rod portion and is connected to a torsion spring. The torsion spring enables the lever 16 to maintain rotational elasticity, and when not subjected to external force, the lever 16 keeps driving the stopper 17 to approach and extend into the sliding groove 9; the adsorption block 18 can be attracted by the electromagnet 12 after being energized and magnetized. When the lever 16 is not subjected to external force, a gap is maintained between the adsorption block 18 and the electromagnet 12; when the electromagnet 12 is energized, the adsorption block 18 approaches the electromagnet 12, and the lever 16 rotates, driving the stopper 17 to leave the sliding groove 9. At this time, the range in which the sliding member 8 can descend in the sliding groove 9 is not limited; and when the electromagnet 12 is not energized, the lever 16 elastically maintains the drive block 17 to extend into the sliding groove 9. At this time, the external manual operation block 15 drives the baffle rod 5 to move downward, and the baffle rod 5 drives the sliding member 8 to descend in the sliding groove 9, which will be blocked by the stopper 17, making it convenient to position the height of the baffle rod 5 to meet the needs of cooperating with the guide groove 13 or the deflection groove 14.

[0044] In another embodiment of the present invention, a rotating seat 19 is rotatably connected in the cabinet 1, and one end of the ground knife operating column 3 away from the ground knife operating hole 2 is rotatably connected to the rotating seat 19 through a delayed torsion component. The delayed torsion component is used to drive the rotating seat 19 to rotate in the same direction and at the same angle after the ground knife operating column 3 rotates a certain angle. Specifically, a rotating warehouse 38 is provided in the cabinet 1, one end of the rotating seat 19 is rotatably connected in the rotating warehouse 38, and the other end is provided outside the rotating warehouse 38, and a knife is provided. The rotation of the rotating seat 19 controls the closing and opening of the switch; the ground knife operating column 3 coaxially penetrates the rotating seat 1 9 is set, one end of the ground knife operating column 3 away from the ground knife operating hole 2 passes through the rotating seat 19 and extends into the rotating chamber 38, and the delay torsion component is arranged between one end of the ground knife operating column 3 and one end of the rotating seat 19 in the rotating chamber 38; the certain angle at which the ground knife operating column 3 triggers the delay torsion component to rotate is preferably 30°~60°; the triggering rotation direction of the ground knife operating column 3 is two directions corresponding to closing and opening; the ground knife operating column 3 is controlled by the operating handle 4 to rotate slowly, and the rotation of the rotating seat 19 driven by the delay torsion component is a rapid rotation, which can avoid the generation of arc and protect the equipment.

[0045] As a preferred technical solution of this embodiment, the time-delay torsion assembly includes two opposite bases 20 fixedly arranged at the ends of the ground knife operating column 3, an arc rod 21 is connected between the two bases 20, a paddle 22 fixedly connected to the rotating seat 19 is movably sleeved on the arc rod 21, a second elastic member 23 sleeved on the arc rod 21 is connected between the base 20 and the paddle 22, a second limit assembly for limiting the movement of the paddle 22 is arranged in the cabinet 1, and the second limit assembly cancels the limit after the ground knife operating column 3 rotates a certain angle. Specifically, the base 20 is arranged radially along the ground knife operating column 3; the arc center of the arc rod 21 coincides with the axis of the ground knife operating column 3; the arc rod 21 slides through the paddle 22; the second elastic member 23 is preferably a spring, and the paddle 22 can be located between the two bases 2 under the action of the second elastic members 23 on both sides without being subject to external force. 0, that is, in the middle of the arc rod 21; the second limiting component limits the rotation of the paddle 22 and corresponds to the closing and opening driven by the rotating seat 19; when the ground knife operating column 3 rotates, one of the bases 20 is close to the paddle 22, and at this time the paddle 22 is restricted from moving by the second limiting component, then the second elastic member 23 elastically deforms and stores elastic potential energy. After the ground knife operating column 3 rotates a certain angle, the second limiting component cancels the restriction on the paddle 22, and the paddle 22 is released by the elastic potential energy of the second elastic member 23. Move back to the middle position of the two bases 20 quickly, and drive the rotating seat 19 to quickly rotate in the same direction and angle as the ground knife operating column 3; after the rotating seat 19 rotates the same angle, the paddle 22 returns to the middle position of the two bases 20, and the second limiting component begins to limit on the other side of the paddle 22.

[0046] As a preferred technical solution of this embodiment, the second limit assembly includes an abutment 24 elastically movably arranged in the cabinet 1, and a limit member 25 is fixedly arranged at one end of the abutment 24, and the limit member 25 is arranged corresponding to the range of movement of the paddle 22, and the ground knife operating column 3 is synchronously rotated away from the ground knife operating hole 2 at one end thereof, and a first linkage column 26 is arranged, and the rotating seat 19 is connected to a guide sleeve 28 through a support rod 27, and a second linkage column 29 is axially movably arranged in the guide sleeve 28, and the second linkage column 29 is arranged between the abutment 24 and the first linkage column 26, and one end of the second linkage column 29 is aligned with the abutment 24 The first linkage column 26 is provided with an extrusion step 31 which is wedge-shaped with the extrusion tooth 30. Specifically, the inner wall of the deepest side of the rotating bin 38 is provided with a retraction groove 39 which matches the abutment 24. A third elastic member 40 is connected between the abutment 24 and the retraction groove 39. The third elastic member 40 keeps pushing the abutment 24 toward the outside of the retraction groove 39, so that the abutment 24 keeps against one end of the second linkage column 29. The limiting member 25 is in the range of movement of the paddle 22 along the axial direction of the ground knife operating column 3. The limiting member 25 moves along the abutment 24 The axial movement of the ground cutter operating column 3 can enter and exit the range of movement of the paddle 22, thereby limiting or canceling the limit on the movement of the paddle 22; the guide sleeve 28 is arranged between the ground cutter operating column 3 and the abutment 24, and the guide sleeve 28 is coaxial with the ground cutter operating column 3; the support rod 27 is arranged on the opposite side of the paddle 22; the first linkage column 26 rotates with the ground cutter operating column 3, and the second linkage column 29 rotates with the rotating seat 19; the extrusion teeth 30 are arranged in an arc shape around the axis of the second linkage column 29, the extrusion surfaces of the extrusion teeth 30 are symmetrical, and the arc corresponding to a single extrusion surface is 30° to 60°; the extrusion ladder 31 surrounds the first linkage The axis of the column 26 is arranged in an arc shape, the extrusion surface of the extrusion step 31 matches the extrusion surface of the extrusion tooth 30, and a groove consistent with the shape of the extrusion tooth 30 is formed between adjacent extrusion steps 31; when the delayed torsion assembly is not triggered, the ground knife operating column 3 rotates relative to the rotating seat 19 to make the first linkage column 26 and the second linkage column 29 rotate relative to each other, thereby causing relative transmission between the extrusion tooth 30 and the extrusion step 31, generating a wedge-shaped extrusion push, so that the second linkage column 29 pushes the abutment 24 to move into the retraction groove 39, and the third elastic member 40 is deformed and stores elastic potential energy;After the first linkage column 26 and the second linkage column 29 rotate relative to each other by a certain angle, the second linkage column 29 pushes the abutment member 24 to drive the limiting member 25 to leave the movable range of the paddle 22, and the paddle 22 drives the rotating seat 19 to rotate under the action of the second elastic member 23, and the paddle 22 can pass through the limiting member 25. During the passing process, the rotating seat 19 rotates relative to the ground knife operating column 3, triggering the extrusion teeth 30 and the extrusion ladder 31 to rotate and reset relative to each other, so that the abutment member 24 drives the limiting member 25 to approach the movable range of the paddle 22 again, but the paddle 22 abuts against the limiting member 25. Only after the paddle 22 completely passes through the limiting member 25, the limiting member 25 is reset back to the movable range of the paddle 22 under the action of the third elastic member 40. ;

[0047] As a preferred technical solution of this embodiment, a linkage hole 32 is provided in the ground knife operating column 3, a key block 33 is axially provided in the linkage hole 32, a key groove 34 matching the key block 33 is axially provided on the outer wall of the first linkage column 26, and the inner wall width of the key groove 34 is greater than the width of the key block 33. Specifically, the cooperation between the key block 33 and the key groove 34 enables the ground knife operating column 3 to rotate synchronously with the first linkage column 26, but the inner wall width of the key groove 34 is greater than the width of the key block 33, so that, relative to the rotating seat 19, the rotation of the ground knife operating column 3 occurs before the rotation of the first linkage column 26, and then, in the ground knife The operating column 3 rotates a certain angle relative to the rotating seat 19, so that when the delayed torsion component is triggered, the elastic potential energy of the second elastic member 23 is directly released first, driving the rotating seat 19 to rotate, and the rotating seat 19 drives the paddle 22 to move first to be misaligned with the limiting member 25, and the first linkage column 26 then rotates relative to the second linkage column 29, and then triggers the second linkage column 29 to move back, and the abutment member 24 drives the limiting member 25 to move closer to the moving range of the paddle 22, thereby ensuring that the return movement of the limiting member 25 is later than the misalignment of the paddle 22 relative to the limiting member 25, avoiding interference between the two and preventing trigger failure.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A ring network cabinet grounding switch device, comprising a cabinet (1), a cable connected inside the cabinet (1), a grounding knife operating hole (2) provided on the cabinet (1), a grounding knife operating column (3) provided inside the grounding knife operating hole (2), a docking space for connecting an operating handle (4) provided between the grounding knife operating hole (2) and the grounding knife operating column (3), characterized in that: Also includes: A stop rod (5) movably arranged in the cabinet (1); An actuator is arranged in the cabinet (1) and is used to control the blocking rod (5) to move into the docking space to prevent the operating handle (4) from being inserted into the docking space when the cable is powered on, and to control the blocking rod (5) to move away from the docking space when the cable is powered off; The actuator comprises a box body (6) fixedly arranged on the cabinet body (1), a sliding hole (7) matching the blocking rod (5) is arranged in the box body (6), a sliding member (8) fixedly connected to the blocking rod (5) is elastically and movably arranged in the box body (6), and a magnetic attraction component for driving the sliding member (8) to move is arranged in the box body (6); The box body (6) is provided with a sliding groove (9) matching with the sliding member (8), one end of the sliding groove (9) is provided with an elastic groove (10), a first elastic member (11) connected with the sliding member (8) is provided in the elastic groove (10), and a magnetic attraction component is provided at the other end of the sliding groove (9); The operating handle (4) is provided with a guide groove (13) matching the blocking rod (5); one end of the guide groove (13) extends to the insertion end of the operating handle (4), and the other end is provided with a deflection groove (14) matching the blocking rod (5); a shift block (15) fixedly connected to the blocking rod (5) is slidably provided on the outer side of the box body (6); a first limit assembly for limiting the moving range of the sliding member (8) is provided in the box body (6); the first limit assembly cancels the limit when the electromagnet (12) is energized and magnetized; The first limiting assembly comprises a lever (16) which is elastically rotatably arranged in a box body (6), one end of the lever (16) is provided with a stopper (17) for extending into the sliding groove (9), and the other end of the lever (16) is provided with an adsorption block (18) corresponding to one side of the electromagnet (12).

2. The ring main unit grounding switch device according to claim 1, characterized in that: The magnetic attraction component comprises an electromagnet (12) arranged at the opposite end of the elastic groove (10) of the sliding groove (9).

3. The ring main unit grounding switch device according to claim 1, characterized in that: A rotating seat (19) is rotatably connected inside the cabinet (1), and one end of the ground knife operating column (3) away from the ground knife operating hole (2) is rotatably connected to the rotating seat (19) via a delayed twisting component. The delayed twisting component is used to drive the rotating seat (19) to rotate in the same direction and at the same angle after the ground knife operating column (3) rotates at a certain angle.

4. The ring main unit grounding switch device according to claim 3, characterized in that: The time-delay torsion assembly comprises two opposite bases (20) fixedly arranged at the ends of the ground knife operating column (3), an arc-shaped rod (21) is connected between the two bases (20), a paddle (22) fixedly connected to the rotating seat (19) is movably sleeved on the arc-shaped rod (21), a second elastic member (23) sleeved on the arc-shaped rod (21) is connected between the base (20) and the paddle (22), a second limit assembly for limiting the movement of the paddle (22) is arranged in the cabinet (1), and the second limit assembly cancels the limit after the ground knife operating column (3) rotates a certain angle.

5. The ring main unit grounding switch device according to claim 4, characterized in that: The second limiting assembly comprises an abutment member (24) elastically movably arranged in the cabinet (1); a limiting member (25) is fixedly arranged at one end of the abutment member (24); the limiting member (25) is arranged corresponding to the range of movement of the paddle (22); a first linkage member (26) is synchronously rotated at one end of the ground knife operating column (3) away from the ground knife operating hole (2); the rotating seat (19) is connected to a guide sleeve (28) through a support rod (27); a second linkage member (29) is axially movably arranged in the guide sleeve (28); the second linkage member (29) is arranged between the abutment member (24) and the first linkage member (26); one end of the second linkage member (29) abuts against the abutment member (24); the other end is provided with an extrusion tooth (30); one end of the first linkage member (26) is provided with an extrusion step (31) wedge-shapedly matched with the extrusion tooth (30).

6. The ring main unit grounding switch device according to claim 5, characterized in that: A linkage hole (32) is arranged in the ground knife operating column (3), a key block (33) is arranged axially in the linkage hole (32), a key groove (34) matching the key block (33) is arranged axially on the outer wall of the first linkage column (26), and the inner wall width of the key groove (34) is greater than the width of the key block (33).

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