A high-voltage disconnector

Abstract

The present invention discloses a high-voltage disconnector, which relates to the field of power devices. At present, when the traditional high-voltage disconnector is frequently switched on and off, the surface of the contact is prone to melting and roughness, reducing the reliability. The present invention includes an insulating frame composed of a bottom beam, a central insulator and edge insulators; a static contact assembly is fixed to the top of the edge insulator, and a conductive bridge is connected above the central insulator through a torsion assembly and can deflect as the central insulator rotates. The on-off driving structure is installed on one side of the bottom beam to drive the central insulator to rotate, driving the two ends of the conductive bridge to rotate and engage with the static contact assembly to form a circuit; two grounding driving structures are symmetrically distributed on both sides of the on-off driving structure to independently control the on-off of the grounding assembly on the bottom beam and the corresponding static contact. The melting phenomenon that occurs during the on-off power switch is partitioned from the actual electrified area, meeting the use requirements of high-frequency on-off control, and at the same time having no requirements for the on-off speed, realizing efficient and reliable on-off control.

Description

Technical Field

[0001] The present invention relates to the field of power devices, and particularly to high-voltage disconnectors. Background Art

[0002] As an irreplaceable power device for on-off control in high-voltage lines, a high-voltage disconnector can perform on-off and grounding control under the control of a driving device. However, during the on-off process of the moving contact and the static contact of the current high-voltage disconnector, the contact surface will become rough and uneven under the action of a large-voltage current, which is particularly obvious in high-voltage disconnectors with frequent on-off operations. Chinese Patent (Publication No.: CN118173412B) proposed a high-voltage disconnector, a high-voltage box, and a high-voltage disconnector control method, which mentioned: "For existing high-voltage disconnectors, when the contacts are opened, within the time from when the contacts are fully closed to when they just start to separate, first, the contact pressure and the number of contact points gradually decrease, and the contact resistance becomes larger and larger. In this way, the current density at the contact points increases sharply, and the heat generated therefrom promotes the melting of the metal at the contact, forming so-called metal liquid drops. Long-term use will cause the contact surface to be uneven, and the contact area between the contacts will decrease, resulting in a significant decrease in the ability of the current to pass through the contacts, causing contact wear or welding. When the contact surface has been worn or used for too long, it will lead to poor contact. When the wear is severe, the biting distance between the static contact and the moving contact will not be enough, which may cause faults or even dangers in the high-voltage cabinet."

[0003] However, the way this patent solves the technical problem is by: "The moving contact disengages from the static contact in a straight-line manner, and the contact surfaces of the moving contact and the static contact are separated simultaneously. The contact pressure instantaneously decreases, preventing the contact pressure and the number of contact points from gradually decreasing, which leads to a sharp increase in the current density at the contact points, thereby avoiding the unevenness of the contact surface and further avoiding contact welding of the contacts."

[0004] In the above method, the contact pressure instantaneously decreases by separating quickly in a straight line to reduce the sharp increase in the current density. However, in terms of the transmission speed of the current, the mechanical speed is extremely slow. This method only reduces the residence time to lower the time in the high-resistance state and reduces the action time of the current on the surface. There will still be a certain degree of melting. For high-voltage disconnectors with frequent on-off control of the current, the roughness will become higher and higher under the cumulative effect. For high-voltage disconnectors with high-frequency use, this method does not effectively solve this problem, and the safety of such high-voltage disconnectors during long-term use cannot be guaranteed. Summary of the Invention

[0005] The purpose of the present invention is to propose a high-voltage isolating switch to solve the problem that the surface of a high-voltage isolating switch with frequent on-off control is easily partially melted and roughened in the energized on-off state, thus affecting the safety of power connection.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: a high-voltage disconnector, comprising an insulating frame consisting of a bottom beam, a central insulator and two edge insulators, and further comprising:

[0007] Two stationary contact assemblies are fixedly mounted on the top of the edge insulator and are at the same height;

[0008] The conductive bridge is arranged between the two stationary contact assemblies and is used for clamping the two ends of the conductive bridge into the two stationary contact assemblies during rotation to form a current path.

[0009] The torsion assembly is installed on the top of the central insulator, and deflects with the rotation of the central insulator. The conductive bridge penetrates and rotates on the surface of the torsion assembly and is driven by it;

[0010] On-off drive structure;

[0011] Two ground drive structures;

[0012] The on-off drive structure and the two grounding drive structures are both installed on one side of the bottom beam, and the two grounding drive structures are symmetrically arranged on both sides of the on-off drive structure. The on-off drive structure is used to drive the central insulator to rotate;

[0013] The grounding assembly is installed through the bottom beam, driven by the grounding driving structure and controls the on-off state of the grounding assembly and the corresponding static contact assembly;

[0014] A locking assembly, mounted on the on-off drive structure and the two grounding drive structures, for limiting the staggered operation of the on-off drive structure or the two grounding drive structures;

[0015] When the torsion assembly rotates with the central insulator, the two ends of the conductive bridge are clamped into the corresponding static contact assembly, and when it is fully clamped, continuous pressure is applied to cause the conductive bridge to deflect and press the static contact assembly. When the conductive bridge deflects, the length of the two ends extends and contacts the static contact assembly.

[0016] As a further description of the above technical solution: the torsion assembly includes a first top seat fixedly connected to the top of the central insulator, a protective frame is rotatably penetrated through the surface of the first top seat, a reciprocating plate is fixedly connected to the top of the first top seat, one end of the reciprocating plate is movably connected to an elastic support member through a pin shaft, the other end of the elastic support member is movably connected to the inner wall of the protective frame through a pin shaft, a limiting through groove is penetrated through the surface of the reciprocating plate, a movable ball knot is slidably provided on the inner wall of the limiting through groove, and the conductive bridge penetrates and rotates on the protective frame.

[0017] As a further description of the above technical solution: The conductive bridge includes a sleeve rotatably penetrating through the protective frame. Moving contacts cooperating with the static contacts are slidably arranged at both ends of the sleeve. A conductive core for maintaining electrical connection with each other is slidably arranged at the opposite ends of the two moving contacts. A guiding groove for limiting the sliding distance of the moving contacts is formed on the surface of the sleeve. A supporting rod penetrating and sliding in the movable spherical joint is fixed on the surface of the sleeve;

[0018] The conductive bridge further includes a telescopic kit attached to and sliding on the arc-shaped side wall of the sleeve. The telescopic kit is fixedly connected to the protective frame. An inclined guiding groove for limiting the deflection angle of the moving contacts is formed on the surface of the telescopic kit;

[0019] When the supporting rod drives the sleeve to deflect under the action of the torsion assembly, the sleeve drives the moving contacts to deflect through the guiding groove, and the moving contacts slide out under the limiting action of the inclined guiding groove during deflection.

[0020] As a further description of the above technical solution: The moving contact includes a conductive head sliding at one end of the sleeve. A plurality of nail heads for cooperating with the inclined guiding groove and the guiding groove to slide are arranged on the surface of the conductive head.

[0021] As a further description of the above technical solution: The static contact assembly includes a second top seat fixed at the top of the edge insulator. A contact holder is fixed on the second top seat. Elastic contact plates for clamping the conductive bridge are symmetrically arranged on the upper and lower sides of the inner wall of the contact holder. A lapping hole is formed in the inner wall of the contact holder. A wiring ear is installed on the surface of the contact holder;

[0022] A side frame is fixed on one side of the contact holder. A pressing plate is fixed on the surface of the side frame.

[0023] As a further description of the above technical solution: The on-off driving structure includes a mounting frame. A main driving rod rotatably penetrates through the surface of the mounting frame. A torsion block is fixed at the top of the main driving rod. An arc plate is movably connected to the surface of the torsion block through a pin shaft. One end of the arc plate is movably connected to a deflection frame fixed at the bottom of the central insulator through a pin shaft. The end of the deflection frame is movably connected to a first transmission rod through a pin shaft.

[0024] As a further description of the above technical solution: The grounding driving structure includes a secondary driving rod. A first deflection arm and a second deflection arm are installed at the top of the secondary driving rod. The bottom ends of the first deflection arm and the second deflection arm are respectively movably connected to a transmission plate and a second transmission rod.

[0025] As a further description of the above technical solution: The grounding component includes a rotating column penetrating and rotating on the bottom beam. A sliding plate and a grounding bridge are installed on the surface of the rotating column. One side of the sliding plate is fixed with a sliding rod. A sliding sleeve is slidably arranged on the surface of the sliding rod. Two clamping plates installed with a transmission plate are symmetrically arranged on both sides of the sliding sleeve. Vertical sliding holes for limiting the sliding of the sliding sleeve are formed on the surface of the clamping plate.

[0026] As a further description of the above technical solution: Two supporting blocks for supporting the grounding bridge are fixedly connected to the surface of the bottom beam.

[0027] As a further description of the above technical solution: The moving contact also includes a sliding surface, a clamping surface and a pressing surface at its power receiving end;

[0028] The sliding surface is used for conducting electricity in cooperation with the inner wall of the static contact assembly before deflection. The clamping surface is used for clamping and conducting electricity on the side after the inner wall of the static contact assembly deflects, and the pressing surface for conducting electricity and locking on the inner wall of the static contact assembly after deflection and ejection.

[0029] As a further description of the above technical solution: The locking component includes a locking plate penetrating and rotating on the surfaces of the main driving rod and the secondary driving rod. It also includes a first concave disc and a second concave disc. The first concave disc and the second concave disc are respectively fixed on the surfaces of the main driving rod and the secondary driving rod. A first locking pin for cooperating with the first concave disc for limiting is fixed on the lower surface of the locking plate. Second locking pins fixed on the surface of the pin plate are symmetrically arranged on both sides of the first locking pin.

[0030] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0031] In this solution, the on-off driving structure drives the central insulator to rotate. The central insulator drives the two conductive bridges to deflect through the torsion assembly. When the conductive bridges contact the two static contact assemblies, they continue to rotate with the central insulator driving the torsion assembly, causing the conductive bridges to start spinning and tightly snap into the static contact assemblies. When the conductive bridges spin, the contact surface with the static contact assemblies switches, and the melting phenomenon that occurs during on-off switching is partitioned from the actual power connection area, meeting the use requirements of high-frequency on-off control, and at the same time having no requirements for the on-off speed;

[0032] When the conductive bridges spin, their length can change. When they are inserted into the static contact assemblies, their length changes while spinning, locking with the static contact assemblies and avoiding the occurrence of slipping.

[0033] During the above process, the power-on and power-off process is coordinated by energizing, de-energizing, and transitioning different surfaces at the end of the conductive bridge, which can meet the stable current conduction under harsh conditions, solve the common contact loss and unstable conduction problems in high-frequency on-off operations, and there are no special requirements for the on-off speed in the overall operation. It can flexibly adapt to different application scenarios, achieve efficient and reliable on-off control, and meet the safety use requirements under complex working conditions. Description of the Drawings

[0034] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0035] Figure 2 It is a front view schematic diagram of the present invention.

[0036] Figure 3 It is a side view schematic diagram of the present invention.

[0037] Figure 4 It is a three-dimensional schematic diagram of the static contact assembly of the present invention.

[0038] Figure 5 It is a schematic diagram of the connection state between the torsion assembly and the conductive bridge of the present invention.

[0039] Figure 6 It is a sectional three-dimensional schematic diagram of the torsion assembly of the present invention.

[0040] Figure 7 It is a three-dimensional schematic diagram of the conductive bridge of the present invention.

[0041] Figure 8 It is an exploded schematic diagram of the conductive bridge of the present invention.

[0042] Figure 9 It is a three-dimensional schematic diagram of the moving contact of the present invention.

[0043] Figure 10 It is a three-dimensional schematic diagram of the on-off drive structure of the present invention.

[0044] Figure 11 It is a schematic diagram of the transmission state between the grounding drive structure and the grounding assembly of the present invention.

[0045] Figure 12 It is an exploded schematic diagram of the locking assembly of the present invention.

[0046] Legend Explanation:

[0047] 10. Insulation frame; 11. Bottom beam; 12. Central insulator; 13. Edge insulator;

[0048] 20. On-off drive structure; 21. Mounting frame; 22. Torsion block; 23. Arc plate; 24. Deflection frame; 25. First transmission rod; 26. Main drive rod;

[0049] 30. Ground driving structure; 31. Secondary driving rod; 32. First deflecting arm; 33. Transmission plate; 34. Second deflecting arm; 35. Second transmission rod;

[0050] 40. Grounding assembly; 41. Rotating column; 42. Slide plate; 43. Grounding bridge; 44. Slide rod; 45. Clamping plate; 46. Vertical sliding hole; 47. Slide sleeve;

[0051] 50. Locking assembly; 51. Locking plate; 52. First concave disc; 53. Second concave disc; 54. First locking pin; 55. Second locking pin;

[0052] 60. Torsion assembly; 61. First top seat; 62. Reciprocating rotating plate; 63. Movable ball joint; 64. Limit through slot; 65. Elastic support member; 66. Protective frame;

[0053] 70. Conductive bridge; 71. Sleeve; 72. Moving contact; 721. Conductive head; 722. Nail head; 723. Sliding surface; 724. Clamping surface; 725. Crimping surface; 73. Conductive core; 74. Telescopic kit; 75. Inclined guide slot; 76. Guide slot; 77. Support rod;

[0054] 80. Stationary contact assembly; 81. Contact holder; 82. Second top seat; 83. Elastic contact plate; 84. Lapping hole; 85. Wiring ear; 86. Side frame; 87. Crimping plate;

[0055] 90. Support block. Detailed implementation mode

[0056] 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 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.

[0057] As Figure 1 - Figure 12 shown, the present invention provides a high-voltage disconnecting switch, which includes an insulating frame 10 composed of a bottom beam 11, a central insulator 12 and two edge insulators 13, and further includes:

[0058] Two stationary contact assemblies 80 are fixedly installed at the top ends of the edge insulators 13 and are at the same height;

[0059] The conductive bridge 70 is arranged between the two stationary contact assemblies 80 and is used for clamping into the two stationary contact assemblies 80 at both ends during rotation to form a current path;

[0060] The torsion assembly 60 is installed at the top of the central insulator 12 and deflects as the central insulator 12 rotates. The conductive bridge 70 penetrates and rotates on the surface of the torsion assembly 60 and is driven by it.

[0061] The on-off drive structure 20 and the two grounding drive structures 30 are both installed on one side of the bottom beam 11, and the two grounding drive structures 30 are symmetrically arranged on both sides of the on-off drive structure 20. The on-off drive structure 20 is used to drive the central insulator 12 to rotate.

[0062] The grounding assembly 40 is installed through the bottom beam 11, driven by the grounding drive structure 30 and controlling its on-off state with the corresponding static contact assembly 80.

[0063] The locking assembly 50 is installed on the on-off drive structure 20 and the two grounding drive structures 30, and is used to limit the staggered operation of the on-off drive structure 20 or the two grounding drive structures 30.

[0064] In the above structure, through the contact and separation of the sliding surface 723 of the moving contact 72 at the end of the conductive bridge 70 and the static contact, the increase in resistance and local melting are concentrated on the sliding surface 723, avoiding damage to the clamping surface 724, thereby ensuring the smoothness and conductivity of the clamping surface 724. This solution makes the transition from the sliding surface 723 to the clamping surface 724 during the deflection process, so that the clamping surface 724 always remains stable during contact, avoiding poor contact caused by local melting. At the same time, the design of the crimping surface 725 is used to further enhance the conductive reliability, providing multiple guarantees. Since the roughness of the sliding surface 723 has no direct relation to conductivity, it can allow rapid on-off operations under any current state, significantly improving the durability and reliability of the system.

[0065] Moreover, the on-off operation has a current concentration effect on the sliding surface 723, greatly reducing the loss of the clamping surface 724, thereby extending the service life of the device. The clamping surface 724 is designed on the side and rotates upward when connecting electricity, which can avoid the accumulation of dirt. The crimping surface 725 further enhances the contact conductivity by vertically fitting the inner wall of the static contact, enabling the device to ensure reliable conductivity in a harsh environment.

[0066] When the torsion assembly 60 rotates with the central insulator 12, it clamps the two ends of the conductive bridge 70 into the corresponding static contact assembly 80, and continuously applies pressure when fully clamped, causing the conductive bridge 70 to deflect and press the static contact assembly 80. When the conductive bridge 70 deflects, the lengths of both ends extend and reach inside the static contact assembly 80.

[0067] Specifically, such as Figure 5 and Figure 6As shown: The torsion assembly 60 includes a first top seat 61 fixedly connected to the top end of the central insulator 12. A guard frame 66 is rotatably penetrated through the surface of the first top seat 61. The top end of the first top seat 61 is fixedly connected with a reciprocating rotating plate 62. One end of the reciprocating rotating plate 62 is movably connected with an elastic support member 65 through a pin shaft. The other end of the elastic support member 65 is movably connected with the inner wall of the guard frame 66 through a pin shaft. A limiting through groove 64 is penetrated through the surface of the reciprocating rotating plate 62. An active ball joint 63 is slidably arranged on the inner wall of the limiting through groove 64. A conductive bridge 70 is rotatably penetrated through the guard frame 66.

[0068] By arranging the elastic support member 65, when the first top seat 61 drives the reciprocating rotating plate 62 to rotate, the elastic support member 65 can drive the guard frame 66 to rotate simultaneously with the rotation force, and when the guard frame 66 cannot rotate, by contracting the length, when the guard frame 66 is stationary, the reciprocating rotating plate 62 inside it can continue to rotate and cooperate.

[0069] Specifically, as Figure 8 and Figure 7 As shown: The conductive bridge 70 includes a sleeve 71 rotatably penetrated through the guard frame 66. Moving contacts 72 cooperating with static contacts are slidably arranged at both ends of the sleeve 71. A conductive core 73 for maintaining electrical connection with each other is slidably arranged at the opposite ends of the two moving contacts 72. A guiding groove 76 for limiting the sliding distance of the moving contact 72 is formed on the surface of the sleeve 71. A support rod 77 fixedly arranged on the surface of the sleeve 71 and slidably penetrated through the active ball joint 63 is provided.

[0070] The conductive bridge 70 further includes a telescopic kit 74 attached to and slidable on the arc-shaped side wall of the sleeve 71. The telescopic kit 74 is fixedly connected to the guard frame 66. An inclined guiding groove 75 for limiting the deflection angle of the moving contact 72 is formed on the surface of the telescopic kit 74.

[0071] When the support rod 77 drives the sleeve 71 to deflect under the action of the torsion assembly 60, the sleeve 71 drives the moving contact 72 to deflect through the guiding groove 76, and the moving contact 72 slides out under the limiting action of the inclined guiding groove 75 during deflection.

[0072] The sleeve 71 of the conductive bridge 70 can rotate, driving the moving contacts 72 at both ends to rotate. At the same time, the internal conductive core 73 can conduct electricity in cooperation with the sleeve 71 after the moving contact 72 slides out a certain distance.

[0073] Specifically, as Figure 9 As shown: The moving contact 72 includes a conductive head 721 slidable at one end of the sleeve 71. A plurality of pin heads 722 for cooperating with the inclined guiding groove 75 and the guiding groove 76 to slide are arranged on the surface of the conductive head 721.

[0074] By arranging the conductive head 721, the pin heads 722 on the surface of the conductive head 721 can cooperate to slide in the inclined guiding groove 75 and the guiding groove 76, so as to achieve the effect of limiting sliding.

[0075] Specifically, as Figure 4 shown: The static contact assembly 80 includes a second top seat 82 fixed to the top of the edge insulator 13. A contact holder 81 is fixed on the second top seat 82. Elastic contact plates 83 for clamping the conductive bridge 70 are symmetrically arranged on the upper and lower sides of the inner wall of the contact holder 81. A lapping hole 84 is formed in the inner wall of the contact holder 81. A connection ear 85 is installed on the surface of the contact holder 81.

[0076] A side frame 86 is fixed to one side of the contact holder 81, and a crimping plate 87 is fixed to the surface of the side frame 86.

[0077] By providing the connection ear 85 and installing it on the surface of the contact holder 81, the cable can be installed to maintain power connection.

[0078] By providing the elastic contact plates 83, as one of the elastic conductors, the elastic contact plates 83 can play a clamping effect to avoid shaking caused by strong wind weather, etc.

[0079] Specifically, as Figure 10 shown: The on-off drive structure 20 includes a mounting frame 21. A main drive rod 26 is rotatably penetrated through the surface of the mounting frame 21. A torsion block 22 is fixed to the top of the main drive rod 26. An arc plate 23 is movably connected to the surface of the torsion block 22 through a pin shaft. One end of the arc plate 23 is movably connected to a deflection frame 24 fixed to the bottom of the central insulator 12 through a pin shaft. The end of the deflection frame 24 is movably connected to a first transmission rod 25 through a pin shaft.

[0080] The main drive rod drives the torsion block 22 to rotate, and drives one end of the arc plate 23 to move through the torsion block 22. The arc plate can drive the deflection frame 24 to rotate. When the deflection frame 24 rotates to one side, the arc plate 23 can cooperate with the arc track of the central insulator 12 to maintain the maximum action angle.

[0081] At the same time, the deflection frame 24 can drive multiple switches to perform synchronous on-off control through the first transmission rod 25.

[0082] Specifically, as Figure 11 shown: The grounding drive structure 30 includes a secondary drive rod 31. A first deflection arm 32 and a second deflection arm 34 are installed at the top of the secondary drive rod 31. The bottom ends of the first deflection arm 32 and the second deflection arm 34 are respectively movably connected to a transmission plate 33 and a second transmission rod 35.

[0083] The grounding drive structure 30 can drive the first deflection arm 32 and the transmission plate 33 to operate through the secondary drive rod 31. At the same time, when deflecting through the second deflection arm 34 and the second transmission rod 35, it can drive multiple switches to operate simultaneously.

[0084] Specifically, as Figure 11As shown: The grounding assembly 40 includes a rotating column 41 rotatably penetrating through the bottom beam 11. A sliding plate 42 and a grounding bridge 43 are mounted on the surface of the rotating column 41. A sliding rod 44 is fixed to one side of the sliding plate 42. A sliding sleeve 47 is slidably disposed on the surface of the sliding rod 44. Two clamping plates 45 mounted to the transmission plate 33 are symmetrically disposed on both sides of the sliding sleeve 47. Vertical sliding holes 46 for limiting the sliding of the sliding sleeve 47 are formed on the surface of the clamping plates 45.

[0085] By providing the sliding rod 44 and the sliding sleeve 47, when the sliding rod 44 slides within the sliding sleeve 47, the sliding sleeve 47 can axially slide on the surface of the sliding rod 44. In cooperation with the fact that the sliding sleeve 47 can vertically slide within the vertical sliding holes 46 between the two clamping plates 45, the axial and vertical forces can be offset by the movement. At this time, the sliding rod 44 is only subjected to the horizontal driving force, and the horizontal force of the sliding rod 44 can deflect the sliding plate 42, thereby realizing the rotation of the rotating column 41 and the grounding bridge 43.

[0086] Specifically, as Figure 1 As shown: Two support blocks 90 for supporting the grounding bridge 43 are fixedly connected to the surface of the bottom beam 11.

[0087] By providing the support blocks 90, the support blocks 90 can support the grounding bridge 43 and keep it stably placed, avoiding the grounding bridge 43 from obstructing other structures.

[0088] Specifically, as Figure 9 As shown: The moving contact 72 further includes a sliding surface 723, a clamping surface 724, and a crimping surface 725 at its power receiving end.

[0089] The sliding surface 723 is used for conducting electricity in cooperation with the inner wall of the static contact assembly 80 before deflection. The clamping surface 724 is used for clamping and conducting electricity on the side of the inner wall of the static contact assembly 80 after deflection, and the crimping surface 725 for conducting electricity and locking against the inner wall of the static contact assembly 80 after deflection and ejection.

[0090] Through the clearly defined division of labor design of the sliding surface 723, the clamping surface 724, and the crimping surface 725, the common problems of contact loss and unstable conduction in high-frequency on-off operations are solved.

[0091] Specifically, as Figure 12 As shown: The locking assembly 50 includes a locking plate 51 rotatably penetrating through the surfaces of the main drive rod 26 and the secondary drive rod 31. It further includes a first concave disc 52 and a second concave disc 53. The first concave disc 52 and the second concave disc 53 are respectively fixed to the surfaces of the main drive rod 26 and the secondary drive rod 31. A first locking pin 54 for cooperating with the first concave disc 52 for limiting is fixed to the lower surface of the locking plate 51. Two second locking pins 55 fixed to the surface of the pin plate are symmetrically disposed on both sides of the first locking pin 54.

[0092] By setting the locking component 50, the main drive rod 26 and the secondary drive rod 31 can drive the first concave disk 52 and the second concave disk 53 to rotate respectively. When the first concave disk 52 rotates, the first locking pin 54 cooperating with it is in the sliding-out state, and the second locking pin 55 is clamped into the second concave disk 53. When the second concave disk 53 rotates, the second locking pin 55 slides out, and the first locking pin 54 is clamped into the first concave disk 52. When the conductive bridge 70 is in the connected state, the grounding bridge 43 cannot be lifted. If the grounding bridge 43 is lifted, the conductive bridge 70 cannot be connected, ensuring that the overall mode can be switched alternately and ensuring safety.

[0093] When this solution is in use, the main drive rod 26 drives the torsion block 22 at the top to rotate on the surface of the mounting frame 21. One end of the torsion block 22 drives one end of the arc plate 23 to move through a pin shaft, and the other end of the guard plate pushes the deflection frame 24 to rotate. At this time, the central insulator 12 starts to rotate under its drive.

[0094] The central insulator 12 drives the reciprocating rotating plate 62 to rotate through the first top seat 61 at the top. The reciprocating rotating plate 62 then drives the guard frame 66 to rotate through the elastic support member 65. At this time, the guard frame 66 drives the conductive bridge 70 to rotate. When the conductive bridge 70 is clamped into the static contact, the conductive bridge 70 cannot move at this time, and the central insulator 12 continuously applies a rotational force. When driving the reciprocating rotating plate 62 to rotate, it presses the elastic support member 65 to contract. At this time, the reciprocating rotating plate 62 moves through the movable ball joint 63 sliding in it, and slides through the movable ball joint 63 and the support rod 77 sliding in it. When the support rod 77 moves, its movable ball joint 63 tilts according to the inclination angle of the support rod 77 and slides in the limit through groove 64 as the position of the support rod 77 changes. When the support rod 77 moves, it drives the sleeve 71 to rotate synchronously. The sleeve 71 then drives the movable contact 72 to deflect synchronously through the guiding groove 76 formed on the surface and the cooperation of the nail head 722.

[0095] When the movable contact 72 deflects, based on the telescopic kit 74 fixed on one side of the guard frame 66, the oblique guiding groove 75 formed on it guides the axial sliding of the nail head 722 when the nail head 722 deflects, so that the movable contact 72 can slide out while deflecting.

[0096] The operating trajectory of the above-mentioned movable contact 72 moves between the two elastic contact plates 83 of the static contact. At this time, the two elastic contact plates 83 are in contact with the sliding surface 723. After moving to a predetermined distance, the movable contact 72 starts to rotate, so that its clamping surface 724 is in contact with the two elastic contact plates 83 and squeezes the elastic contact plates 83 to deform. While rotating, the movable contact 72 extends and is clamped into the lapping hole 84 to achieve locking and energized fitting.

[0097] The above process realizes power-on.

[0098] When power is cut off, if grounding treatment is required, by driving the secondary drive rod 31, it can drive the first deflection arm 32 to move the transmission plate 33. The transmission plate 33 drives the slide bar 44 to move along an arc trajectory through the clamping plate 45 on its surface and the sliding sleeve 47 sliding thereon. At this time, the slide plate 42 can be deflected. When the slide plate 42 is deflected, the grounding bridge 43 can be brought into contact with the crimping plate 87 through the rotating column 41 to form a grounding circuit.

[0099] In summary, it can be seen that in this solution, the on-off drive structure 20 drives the central insulator 12 to rotate. Among them, the central insulator 12 drives the first top seat 61 and the reciprocating rotating plate 62 to deflect. The reciprocating rotating plate 62 drives the protective frame 66 to rotate through the elastic support force of the elastic support member 65. When the carriage rotates, the conductive bridge 70 passing through its surface deflects at the same time until the sliding surfaces 723 of the moving contacts 72 on both sides of the conductive bridge 70 are clamped between the two elastic contact plates 83 of the static contact. During continuous rotation, the reciprocating rotating plate 62 presses the elastic support member 65 to contract, and drives the sleeve 71 to rotate through the support rod 77. The moving contacts 72 at both ends of the sleeve 71 deflect at the same time and transition from the sliding surface 723 to the clamping surface 724, and press the two elastic contact plates 83 to deform through the clamping surface 724 to maintain sufficient clamping force. This method makes the resistance increase as the contact surface decreases through the contact and separation of the sliding surface 723 and the static contact, and the local melting is located on the sliding surface 723, making the sliding surface 723 rough, and conducting electricity through contact by the clamping surface 724 during deflection. The roughness of the sliding surface 723 has no effect on subsequent conduction, that is, this surface can perform direct on-off operations under any current state. At the same time, the clamping surface 724 can be used as a smooth surface for contact conduction and has sufficient clamping force to meet the use requirements of high-frequency on-off control, and there is no requirement for the on-off speed.

[0100] At the same time, the moving contact 72 is in a deflected state under the action of the guiding groove 76 on the surface of the sleeve 71, and the nail head 722 on its surface slides out under the action of the inclined guiding groove 75 of the telescopic kit 74 at the same time. The nail head 722 on the surface of the moving contact 72 in the sliding-out state slides in the guiding groove 76. At this time, when the moving contact 72 deflects from the sliding surface 723 to the clamping surface 724, it slides out synchronously. After sliding out, the crimping surface 725 is clamped and fitted in the overlapping hole 84. The pressure of the crimping surface 725 on the inner wall of the overlapping hole 84 is provided by the driving pressure of the on-off drive structure 20, so that the moving contact 72 in the clamped state is locked in the static contact. When the on-off drive structure 20 has no action, the moving contact 72 and the static contact cannot be separated, and the current is further guided through the cooperation of the crimping surface 725 and the overlapping hole 84 and the clamping surface 724.

[0101] In the above solution, the impacts during the on-off process are all concentrated on the sliding surface 723, and it transitions from the sliding surface 723 to the clamping surface 724 while maintaining the clamped and fitted state, so as to always maintain a stable power-on state. The clamping surface 724 will not have the situation of local melting. At the same time, the crimping surface 725 further extends to fit against the inner wall of the static contact, serving as another current-carrying and insurance measure after the clamping surface 724. Since the clamping surface 724 has an arc-shaped side wall, it is extremely easy to be contaminated. After deflection, the contamination is not easy to adhere, and through the vertical plane of the crimping surface 725, better cleanliness guarantee is provided, and stable current conduction under harsh conditions can be satisfied.

[0102] Through the clearly defined design of the sliding surface 723, the clamping surface 724, and the crimping surface 725, the common problems of contact loss and unstable conduction in high-frequency on-off operations are solved. Finally, this solution has no special requirements for the on-off speed, can flexibly adapt to different application scenarios, realize efficient and reliable on-off control, and meet the safety use requirements under complex working conditions.

[0103] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A high voltage disconnector, comprising an insulating frame consisting of a bottom beam, a central insulator and two edge insulators, characterized in that: Also includes: Two stationary contact assemblies are fixedly mounted on the top of the edge insulator and are at the same height; The conductive bridge is arranged between the two stationary contact assemblies and is used for clamping the two ends of the conductive bridge into the two stationary contact assemblies during rotation to form a current path. The torsion assembly is installed on the top of the central insulator, and deflects with the rotation of the central insulator. The conductive bridge penetrates and rotates on the surface of the torsion assembly and is driven by it; It also includes an on-off driving structure installed on the bottom beam for driving the central insulator to rotate, two grounding driving structures symmetrically arranged on the bottom beam, and a locking assembly for limiting the staggered operation of the on-off driving structure and the two grounding driving structures; The grounding assembly is installed through the bottom beam, driven by the grounding driving structure and controls the on-off state of the grounding assembly and the corresponding static contact assembly; The torsion assembly clamps the two ends of the conductive bridge into the corresponding static contact assembly when rotating with the central insulator, and continuously applies pressure when fully clamped to cause the conductive bridge to deflect and press the static contact assembly. When the conductive bridge deflects, the length of the two ends extends and contacts the static contact assembly. The conductive bridge comprises a sleeve that penetrates and rotates on the guard frame, and movable contacts that cooperate with the static contacts are slidably arranged at both ends of the sleeve, and conductive cores for mutually maintaining electrical connection are slidably arranged at opposite ends of the two movable contacts, and a guide groove for limiting the sliding distance of the movable contact is opened on the surface of the sleeve, and a support rod that penetrates and slides in the movable ball knot is fixed on the surface of the sleeve; The conductive bridge also includes a telescopic sleeve that fits and slides on the arc-shaped side wall of the sleeve, the telescopic sleeve is fixedly connected to the guard frame, and the surface of the telescopic sleeve is provided with an oblique guide groove for limiting the deflection angle of the moving contact; When the support rod deflects with the sleeve under the action of the torsion assembly, the sleeve deflects with the moving contact through the guide groove, and the moving contact slides out under the restriction of the inclined guide groove during the deflection; The movable contact comprises a conductive head sliding on one end of the sleeve, and a surface of the conductive head is provided with a plurality of nail heads sliding in cooperation with the oblique guide groove and the guide groove; The moving contact also includes a sliding surface, a clamping surface and a crimping surface at its power receiving end; The sliding surface is used to slide with the inner wall of the static contact assembly, the clamping surface is used to pressurize and clamp the inner wall of the static contact assembly, and is used to fit and lock the crimping surface on the inner wall of the static contact assembly after deflection and ejection.

2. A high voltage disconnect switch according to claim 1, characterized in that: The torsion assembly includes a first top seat fixedly connected to the top of the central insulator, a guard frame is rotatably penetrated on the surface of the first top seat, a reciprocating plate is fixedly connected to the top of the first top seat, one end of the reciprocating plate is movably connected to an elastic support member through a pin shaft, and the other end of the elastic support member is movably connected to the inner wall of the guard frame through a pin shaft, a limiting through groove is penetrated on the surface of the reciprocating plate, and a movable ball knot is slidably provided on the inner wall of the limiting through groove, and the conductive bridge penetrates and rotates on the guard frame.

3. A high voltage disconnect switch according to claim 1, characterized in that: The static contact assembly comprises a second top seat fixed at the top of the edge insulator, a contact frame is fixed on the second top seat, elastic contact plates for clamping the conductive bridge are symmetrically arranged on the upper and lower sides of the inner wall of the contact frame, a lap hole is opened on the inner wall of the contact frame, and a wiring ear is installed on the surface of the contact frame; A side frame is fixed on one side of the contact frame, and a crimping plate is fixed on the surface of the side frame.

4. A high voltage disconnect switch according to claim 1, characterized in that: The on-off drive structure includes a mounting frame, a main drive rod is rotatably passed through the surface of the mounting frame, a torsion block is fixed to the top end of the main drive rod, an arc plate is movably connected to the surface of the torsion block via a pin shaft, one end of the arc plate is movably connected to a deflection frame fixed to the bottom of the central insulator via a pin shaft, and the end of the deflection frame is movably connected to the first transmission rod via a pin shaft.

5. A high voltage disconnector according to claim 4, characterized in that: The grounding drive structure comprises a secondary drive rod, a first deflection arm and a second deflection arm are mounted on the top of the secondary drive rod, and a transmission plate and a second transmission rod are movably connected to the bottom ends of the first deflection arm and the second deflection arm, respectively.

6. A high voltage disconnector according to claim 5, characterized in that: The grounding component includes a rotating column that penetrates and rotates on the bottom beam, a slide plate and a grounding bridge are installed on the surface of the rotating column, a sliding rod is fixed to one side of the sliding rod, a sliding sleeve is slidably arranged on the surface of the sliding rod, two clamping plates installed with the transmission plate are symmetrically arranged on both sides of the sliding sleeve, and vertical sliding holes for limiting the sliding of the sliding sleeve are opened on the surface of the clamping plate.

7. A high voltage disconnector according to claim 6, characterized in that: Two supporting blocks for supporting the grounding bridge are fixedly connected to the surface of the bottom beam.

8. A high voltage disconnect switch according to claim 1, characterized in that: The locking assembly includes a locking plate that penetrates and rotates on the surfaces of the main driving rod and the secondary driving rod, and also includes a first concave disk and a second concave disk, the first concave disk and the second concave disk are respectively fixed on the surfaces of the main driving rod and the secondary driving rod, and a first locking pin for cooperating with the first concave disk to limit the position is fixed on the lower surface of the locking plate, and second locking pins fixed on the surface of the pin plate are symmetrically arranged on both sides of the first locking pin.

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