Fuse support structure and fuse assembly

Abstract

The invention relates to the technical field of electrical devices, in particular to a fuse support structure and a fuse assembly. The technical scheme comprises a support seat, the top end of the support seat is provided with a limiting ring, the top end of the limiting ring is rotatably connected with a cover plate, and a buckle assembly is arranged between the limiting ring and the cover plate; the at least two clamping plates are oppositely arranged, the clamping plates are arranged in the limiting ring, and elastic mechanisms are arranged on the sides, deviating from each other, of the two clamping plates; the connecting rod is fixedly connected to the bottom end of the limiting ring, and the end, away from the limiting ring, of the connecting rod is sleeved with an L-shaped pipe. Through double-working-condition linkage optimization design, double safety protection is achieved, under the normal working condition, the elastic mechanism drives the clamping plates to symmetrically fix the electric wire, stress concentration caused by self weight is dispersed, and mechanical fatigue of a connection interface is avoided; and under the fault working condition, the pulling mechanism triggers mechanical linkage, so that the clamping plates synchronously move to cut off a power supply path, and the capacitor energy storage residual risk is eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical devices, and in particular to a fuse bracket structure and a fuse assembly. Background Art

[0002] As a key protection component in the power system, the fuse bracket structure design directly affects the reliability of electrical connections, maintenance convenience and system safety. Existing fuse brackets mostly adopt fixed or rigid connection structures.

[0003] However, the existing bracket has a single function and only supports the fuse, but cannot play any additional role. For example, under normal operating conditions of the fuse: there is a dynamic mechanical imbalance between the connection between the fuse body and the wire. Affected by the deadweight of the wire, the current-carrying wire presents a non-ideal sag shape, resulting in a periodic mechanical stress concentration effect at the connection interface; when the fuse is subjected to a short-circuit fault condition: although the fuse body has triggered the emergency protection action, there is still a dynamic thermal stress superposition effect at its incoming line end, resulting in residual distributed capacitance energy storage between the terminals. If maintenance operations are performed at this time, it may cause the risk of electric shock due to step voltage, endangering the safety of maintenance personnel. Under the above two working conditions, the existing brackets cannot effectively intervene. Therefore, the present application proposes a fuse bracket structure and a fuse assembly. Summary of the Invention

[0004] The purpose of the present invention is to address the problems of wire stress concentration and residual electricity in the background technology and to propose a fuse bracket structure and a fuse assembly.

[0005] In a first aspect, the present application provides a fuse holder structure, comprising: The bracket seat has a limit ring at the top of the bracket seat, the top of the limit ring is rotatably connected to the cover plate, and a snap assembly is provided between the limit ring and the cover plate; At least two clamping plates arranged opposite to each other, the clamping plates being arranged inside the limiting ring, and elastic mechanisms being provided on opposite sides of the two clamping plates; The connecting rod is fixedly connected to the bottom end of the limiting ring. An L-tube is sleeved on the outer side of the end of the connecting rod away from the limiting ring. The end of the L-tube away from the connecting rod is fixedly connected to the limiting plate 1, and the limiting plate 1 is slidably connected to the top end of the bracket seat. A traction rope 1, wherein the bottom end of the traction rope 1 is fixedly connected to a middle plate, and an end of the middle plate facing away from the traction rope 1 is fixedly connected to a traction rope 2; The pulling mechanism is connected to the second traction rope to control the displacement of the first limit plate.

[0006] Optionally, the pulling mechanism includes a limiting plate 2, a rack, a spur gear, a spring 1, a short guide wheel and a long guide wheel. The limiting plate 2 is fixedly connected to the traction rope 2, and the limiting plate 2 is slidably connected to the top of the bracket seat. The rack is respectively fixed to the end close to the limiting plate 1 and the limiting plate 2. The spur gear is rotatably connected to the bracket seat, and the two sides of the spur gear are respectively meshed with a pair of racks. The short guide wheel and the long guide wheel are respectively arranged on the outside of the traction rope 1 and the traction rope 2, and the short guide wheel and the long guide wheel are both fixed to the bracket seat. The two ends of the spring 1 are respectively fixed to the limiting plate 2 and the long guide wheel.

[0007] Optionally, the elastic mechanism includes a pair of limiting rods, a side plate and a second spring, the pair of limiting rods are respectively fixed on the opposite sides of the two clamping plates, the side plate is fixed on the end of the pair of limiting rods away from the clamping plates, and the two ends of the second spring are respectively fixed to the limiting ring and the side plate.

[0008] Optionally, the snap assembly includes an L-plate and a baffle, the L-plate is rotatably connected to the outer side of the cover plate, the baffle is fixed to the outer side of the limiting ring, and the baffle is attached to the inner side of the L-plate.

[0009] Optionally, the preset angle of the clamping plate is 120°, and the clamping plate is made of rubber.

[0010] Optionally, a guide rod is fixedly connected to the outer side of the connecting rod, a guide plate is fixedly connected to one end of the bracket seat close to the limiting ring, a guide groove is opened inside the guide plate, and the guide rod is arranged inside the guide groove.

[0011] Optionally, the guide groove is designed to be "wave-shaped".

[0012] Optionally, a pair of side panels are fixed with triangular blocks at their opposite ends, the bracket seat is fixed with a support plate at one end close to the limiting ring, the support plate is rotatably connected to a hinge plate at one end close to the side panel, and a spring three is fixed between the hinge plate and the support plate.

[0013] Optionally, the contact surface between the triangular block and the hinge plate is designed to be an "inclined surface", and the spring three is designed to be an "arc-shaped surface".

[0014] In a second aspect, the present application provides a fuse assembly, comprising the fuse holder structure described in the first aspect, the assembly further comprising: The fuse body includes: Insulation tube, connected to the bracket base bolts: The fuse tube is rotatably connected to one end of the insulating tube; The waterproof cover is connected to the insulating tube, and the fuse tube is embedded in the waterproof cover through a locking piece; An operating ring connected to the outside of the fuse tube; Both ends of the insulating tube are plugged with electric wires; The outer side of the fuse tube is connected to a plurality of groups of counterweight blocks via cable ties, and the counterweight blocks are used to increase the inertia generated when the fuse tube swings.

[0015] Compared with the prior art, this application has at least one of the following beneficial technical effects: 1. The present invention achieves dual safety protection through a dual-working-condition linkage optimization design: under normal working conditions, the elastic mechanism drives the clamping plate to symmetrically fix the wires, dispersing the stress concentration caused by its own weight and avoiding mechanical fatigue of the connection interface; under fault conditions, the pulling mechanism triggers the mechanical linkage, causing the clamping plate to synchronously displace and cut off the power supply path, eliminating the risk of residual capacitor energy storage.

[0016] 2. The present invention realizes compound displacement control of the clamping plate through the cooperation between the guide rod and the guide groove: when the guide rod moves along the horizontal-vertical compound trajectory inside the guide groove, it drives the clamping plate to produce a synergistic effect of vertical vibration and lateral displacement on the wire. The multi-degree-of-freedom dynamic coupling mechanism reduces the bonding energy at the connection interface between the wire and the insulating tube and reduces the pull-out resistance by superimposing periodic shear stress and normal load. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Provide the overall structural diagram of the fuse bracket structure and fuse assembly; Figure 2 It is a schematic diagram of the structure of the insulation tube and the fuse tube; Figure 3 It is a schematic diagram of the partial structure of the fuse bracket structure and the fuse assembly; Figure 4 Schematic diagram of the structure of traction rope 1 and traction rope 2; Figure 5 Schematic diagram of the guide rod and guide plate structure; Figure 6 Schematic diagram of the wire structure; Figure 7 for Figure 6 A in the middle is an enlarged structural diagram; Figure 8 for Figure 6 The enlarged structural diagram at B in the middle; Figure 9 It is a partial plan view of the fuse bracket structure and fuse assembly; Figure 10 This is a schematic diagram of the connection between the insulating tube and the wire.

[0018] Figure numerals: 1. bracket seat; 2. limiting ring; 3. cover plate; 4. clamping plate; 5. L plate; 6. baffle; 7. connecting rod; 8. L tube; 9. limiting plate one; 10. traction rope one; 11. middle plate; 12. traction rope two; 13. limiting plate two; 14. rack; 15. spur gear; 16. spring one; 17. short guide wheel; 18. long guide wheel; 19. limiting rod; 20. side plate; 21. spring two; 22. guide rod; 23. guide plate; 24. guide groove; 25. triangular block; 26. support plate; 27. hinged plate; 28. spring three; 29. ​​insulating tube; 30. fuse tube; 31. waterproof cover; 32. operating ring; 33. electric wire; 34. counterweight block. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0020] like Figure 1-Figure 5 As shown, the fuse holder structure proposed in the present invention includes a holder base 1, a limit ring 2 is provided at the top of the holder base 1, a cover plate 3 is rotatably connected to the top of the limit ring 2, and a snap assembly is provided between the limit ring 2 and the cover plate 3; first, the cover plate 3 is opened from the top of the limit ring 2 by the snap mechanism, at which time the wire 33 can be placed inside the limit ring 2 and plugged into the inside of the insulating tube 29 (the plug-in diagram is shown in FIG. Figure 10 As shown), the cover plate 3 is then attached to the top of the limiting ring 2 through a snap mechanism. The limiting ring 2 and the cover plate 3 wrap the wire 33. However, under normal operating conditions of the fuse, there is a dynamic mechanical imbalance at the connection between the fuse body and the wire 33. Under the influence of the deadweight of the wire 33, the current-carrying wire 33 presents a non-ideal sag arc shape, resulting in a periodic mechanical stress concentration effect at the connection interface.

[0021] In response to the above problems, such as Figure 3-Figure 5 As shown, the embodiment of the present invention also includes two clamping plates 4, both of which are arranged inside the limiting ring 2, and elastic mechanisms are provided on the opposite sides of the two clamping plates 4; when the wire 33 is located inside the limiting ring 2, the two clamping plates 4 are acted upon by the elastic mechanism, which will drive the clamping plates 4 to clamp the wire 33. At this time, the wire 33 located at the clamping position and the wire 33 plugged into the insulating tube 29 are limited at the same time, thereby effectively avoiding excessive local pressure on the wire 33. The wire 33 clamped by the clamping plates 4 can share part of the pressure, thereby avoiding the dynamic mechanical imbalance phenomenon at the connection between the fuse body and the wire 33.

[0022] In addition, when the fuse is subjected to a short-circuit fault condition: although the fuse body has triggered the emergency protection action, there is still a dynamic thermal stress superposition effect at its incoming line end, resulting in residual distributed capacitance energy storage between the terminals. If maintenance operations are performed at this time, it may cause the risk of electric shock due to step voltage, endangering the safety of maintenance personnel.

[0023] In response to the above problems, such as Figure 3 、 Figure 4 and Figure 5 As shown, the embodiment of the present invention further includes a pulling mechanism, a connecting rod 7 and a pulling rope 10. The pulling mechanism is described in detail below: The pulling mechanism is connected to the traction rope 12 and is used to move the limit plate 9. The bottom end of the traction rope 10 is fixedly connected to the middle plate 11. When the fuse body triggers the protection action, it will pull the traction rope 10. The end of the middle plate 11 facing away from the traction rope 10 is fixedly connected to the traction rope 12. When the traction rope 10 is subjected to force, it will synchronously pull the traction rope 12 through the middle plate 11. At this time, the traction rope 12 will drive the pulling mechanism to operate, and the pulling mechanism will then drive the limit plate 9 to move, and approach the direction of the traction rope 12 along the bracket seat 1.

[0024] Among them, Figure 5 As shown, the connecting rod 7 is fixed to the bottom end of the limiting ring 2, and an L-tube 8 is sleeved on the outer side of the end of the connecting rod 7 away from the limiting ring 2. The end of the L-tube 8 away from the connecting rod 7 is fixed to the limiting plate 9, and the limiting plate 9 is slidably connected to the top of the bracket seat 1. When the limiting plate 9 moves, the connecting rod 7 can be driven to move by the L-tube 8, and the connecting rod 7 can be adjusted in height along the L-tube 8. During the movement of the connecting rod 7, the limiting ring 2 is synchronously driven to move. When the limiting ring 2 moves, the two clamping plates 4 are in a squeezed and fixed state with the wires 33, and then the limiting ring 2 moves, which will pull the wires 33 to move horizontally. At this time, the wires 33 are forced to break away from the inside of the insulating tube 29, thereby ending the power supply to the fuse body, thereby effectively preventing the residual energy storage of the capacitor and improving the safety of the device during operation. Through the above-mentioned structural design, different effects of the bracket under two working conditions are achieved, that is, the problem of mechanical stress concentration effect between the insulating tube 29 and the wires 33 is solved, and the problem of distributed capacitance energy storage residual between the insulating tube 29 and the wires 33 is solved.

[0025] Further, such as Figure 4 and Figure 5As shown, the pulling mechanism includes a limit plate 2 13, a rack 14, a spur gear 15, a spring 16, a short guide wheel 17 and a long guide wheel 18. The limit plate 2 13 is fixedly connected to the traction rope 2 12. The limit plate 2 13 is slidably connected to the top of the bracket seat 1. When the traction rope 2 12 is pulled by the traction rope 10, it will drive the limit plate 2 13 to move in the direction of the traction rope 2 12. The rack 14 is respectively fixed to the end close to the limit plate 1 9 and the limit plate 2 13. The spur gear 15 is rotatably connected to the bracket seat 1, and the two sides of the spur gear 15 are respectively meshed with a pair of racks 14. The movement of the limit plate 2 13 drives the spur gear 15 to rotate through the fixed rack 14, and the rotation of the spur gear 15 will drive the rack 14 fixed to the limit plate 1 9 to move in the opposite direction. At this time, the movement directions of the limit plate 1 9 and the limit plate 2 13 are opposite, and the limit ring 2 will move in the direction away from the insulating tube 29, thereby achieving the purpose of pulling the wire 33 out of the insulating tube 29. It should be noted that the protection action triggered by the fuse body can overcome the friction required for the movement of the limit ring 2 and the pulling force required to pull the wire 33. The short guide wheel 17 and the long guide wheel 18 are respectively arranged on the outside of the traction rope 10 and the traction rope 2 12, and the short guide wheel 17 and the long guide wheel 18 are both fixed to the bracket seat 1. The short guide wheel 17 and the long guide wheel 18 play a role in the pulling direction of the traction rope 10 and the traction rope 2 12 respectively. The guiding role is not explained in detail. The two ends of the spring 16 are respectively fixed to the limit plate 2 13 and the long guide wheel 18. When the limit plate 2 13 moves toward the traction rope 2 12, the spring 16 will be squeezed, causing the spring 16 to deform and generate elastic potential energy. Then, when the traction rope 2 12 finishes pulling the limit plate 2 13, the spring 16 can release the elastic potential energy, thereby pushing the limit plate 2 13 to reset, and then driving the limit ring 2 back to the initial position.

[0026] In addition, if Figure 5 As shown, the elastic mechanism includes a pair of limit rods 19, side plates 20 and spring 21. The pair of limit rods 19 are respectively fixed to the opposite sides of the two clamping plates 4. The pair of limit rods 19 can support the clamping plates 4 so that the clamping plates 4 can support lateral movement. It should be noted that the side thickness of the limit ring 2 is sufficient to support the lateral movement of the limit rod 19 without swinging. The side plate 20 is fixed to the end of the pair of limit rods 19 away from the clamping plates 4, which plays the role of fixing the spring 21 and the limit rod 19. The two ends of the spring 21 are respectively fixed to the limit ring 2 and the side plate 20. When the size of the wire 33 is larger than the gap between the clamping plates 4, the spring 21 can be deformed to provide space for the placement of the wire 33, and the reaction force provided by the spring 21 can also further play a role in fixing and limiting the wire 33.

[0027] In addition, if Figure 7As shown, the snap assembly includes an L-plate 5 and a baffle 6, and the L-plate 5 is rotatably connected to the outer side of the cover plate 3. The L-plate 5 can rotate along the cover plate 3, and the baffle 6 is fixed to the outer side of the limit ring 2. The baffle 6 fits against the inner side of the L-plate 5. At this time, when the swinging cover plate 3 rotates along the limit ring 2, the L-plate 5 will be blocked by the baffle 6, and the cover plate 3 cannot rotate normally at this time. When it is necessary to open the cover plate 3, the L-plate 5 can be rotated, and the L-plate 5 and the baffle 6 end their fitting state. The L-plate 5 is no longer blocked by the baffle 6, and the cover plate 3 can be smoothly rotated and opened. Through the above-mentioned structural design, the wires 33 can be placed conveniently. Only by opening the cover plate 3, the wires 33 can be placed inside the limit ring 2, avoiding the conventional need to insert the wires 33 into the inside of the limit ring 2, and providing two ways to place the wires 33.

[0028] Further, such as Figure 5 As shown, the preset angle of the clamping plate 4 is 120°, and the curvature presented can better limit the wire 33, and the clamping plate 4 is made of rubber material, which can play a certain buffering role when the clamping plate 4 clamps the wire 33, and also avoids hard contact.

[0029] In addition, if Figure 5 and Figure 9 As shown, the outer side of the connecting rod 7 is fixed with a guide rod 22. When the limiting ring 2 pulls the wire 33 through the clamping plate 4, the connecting rod 7 is synchronously in a moving state, and at this time the connecting rod 7 will drive the guide rod 22 to move. The end of the bracket seat 1 close to the limiting ring 2 is fixed with a guide plate 23, and a guide groove 24 is provided inside the guide plate 23. The guide rod 22 is arranged inside the guide groove 24. When the guide rod 22 moves, it will be inside the guide groove 24. During the lateral movement of the guide rod 22, it will also move vertically back and forth according to the shape of the guide groove 24. It should be noted that the end of the connecting rod 7 located inside the L tube 8 is square in design. Therefore, when the guide rod 22 moves inside the guide groove 24, the connecting rod 7 will not rotate. At this time, when the connecting rod 7 When the connecting rod 7 performs a compound displacement motion along the horizontal axis (including horizontal reciprocating motion and vertical periodic displacement), it will drive the limit ring 2 to synchronously perform a displacement motion with the same vector trajectory. During this process, the clamping plate 4 integrated inside the limit ring 2 forms a dynamic clamping-traction coupling relationship with the wire 33. When the clamping plate 4 performs a reciprocating axial motion in the vertical direction, the wire 33 is driven to generate a compound displacement (including vertical vibration and lateral offset) through the mechanical synergy effect. This multi-degree-of-freedom collaborative motion mode can effectively reduce the contact surface bonding energy between the wire 33 and the insulating tube 29, and realize fatigue accumulation of the connection interface material through the superposition of periodic shear stress and normal load, thereby significantly reducing the pull-out resistance and improving the mechanical efficiency of the wire 33 axially disengaging from the insulating tube 29.

[0030] Among them, Figure 9 As shown, the guide groove 24 is designed in a "wave shape", which can reduce resistance while ensuring that the guide rod 22 can periodically move vertically.

[0031] When the clamping plate 4 clamps the wire 33 and moves it laterally, it is necessary to ensure that the clamping plate 4 has sufficient clamping force to prevent the wire 33 from being loose due to insufficient friction when the clamping plate 4 drives the wire 33 to move.

[0032] In response to the above problems, such as Figure 5 、 Figure 6 and Figure 8 As shown, the embodiment of the present invention also includes a triangular block 25, a support plate 26, a hinge plate 27 and a spring three 28. The triangular block 25 is fixedly connected to the end of a pair of side plates 20 that are away from each other, and the support plate 26 is fixedly connected to the end of the bracket seat 1 close to the limit ring 2. The hinge plate 27 is rotatably connected to the end of the support plate 26 close to the side plate 20. The spring three 28 is fixedly connected between the hinge plate 27 and the support plate 26. When the clamping plate 4 clamps the wire 33 and moves laterally, the side plate 20 will move laterally accordingly. When the triangular block 25 contacts the hinge plate 27, the hinge plate 27 applies an extrusion force to the inclined surface of the triangular block 25. The triangular block 25 is forced to drive the side plate 20 to move toward the clamping plate 4. At this time, the clamping force of the clamping plate 4 on the wire 33 will increase, thereby increasing the friction between the clamping plate 4 and the wire 33. It should be noted that the spring three 28 The elastic potential energy is greater than the elastic potential energy of spring two 21. When the clamping plate 4 moves to squeeze the wire 33 to the limit distance and cannot move further, the spring three 28 will be deformed, and the hinge plate 27 will swing along the support plate 26 at this time, providing activity space for the movement of the triangular block 25. It should be noted that the distance that the triangular block 25 moves horizontally and contacts the hinge plate 27 is sufficient to support the clamping plate 4 to pull the wire 33 out of the inside of the insulating tube 29. When the triangular block 25 moves over the hinge plate 27, the hinge plate 27 will be reset by the elastic potential energy released by spring three 28. Similarly, when the triangular block 25 resets and moves, it will still contact the hinge plate 27. When the spring three 28 is squeezed by the triangular block 25 to the limit load, it will be deformed. The hinge plate 27 will swing in the opposite direction at this time, providing activity space for the movement of the triangular block 25.

[0033] Among them, Figure 8 As shown, the contact surface between the triangular block 25 and the hinge plate 27 is designed as a "slant surface", which can reduce friction during contact. The spring 3 28 is designed as an "arc shape", which can deform when the hinge plate 27 swings to generate elastic potential energy.

[0034] On the other hand, Figure 2 and Figure 3As shown, the present invention provides a fuse assembly, including the above fuse holder structure, the assembly also includes a fuse body, the body includes an insulating tube 29, a fuse tube 30, a waterproof cover 31 and an operating ring 32. The fuse body is described in detail below: The insulating tube 29 is bolted to the bracket seat 1, which can make the insulating tube 29 and the bracket seat 1 more firmly connected. The fuse tube 30 is rotatably connected to one end of the insulating tube 29. When the wire 33 is short-circuited or a load problem is sensed inside the fuse tube 30, it rotates in time, which is used for power-off protection and for convenience of personnel inspection. The waterproof cover 31 is connected to the insulating tube 29. The insulating tube 29 supports the waterproof cover 31, and the fuse tube 30 is embedded in the waterproof cover 31 through a locking piece. The locking piece is used to lock the fuse. The fuse tube 30 plays a fixing role. When a short circuit occurs, the fixation of the fuse tube 30 can be ended. The operating ring 32 is connected to the outside of the fuse tube 30. The operating ring 32 can facilitate personnel to perform installation and other operations. It should be noted that all components of the fuse body are existing technologies. The fuse body adopts the drop-type fuse RW12. The working principle is not elaborated in detail. Among them, the locking part will apply a thrust to the fuse tube 30 when releasing the swing of the fuse tube 30 to ensure that the fuse tube 30 has sufficient force to rotate.

[0035] Among them, Figure 2 As shown, both ends of the insulating tube 29 are plugged with wires 33. When the wires 33 are energized through the insulating tube 29, electricity will form an electric loop inside the insulating tube 29 and the fuse tube 30. Therefore, in the event of a short circuit, the fuse tube 30 can receive the signal in time and trigger the protection behavior, such as the swinging of the fuse tube 30 in the above description.

[0036] In addition, if Figure 2 As shown, the outer side of the fuse tube 30 is connected to multiple groups of counterweights 34 through cable ties. The counterweights 34 are used to increase the inertia generated when the fuse tube 30 swings. Under the action of the locking member, the fuse tube 30 swings, and the traction rope 10 is pulled by the operating ring 32. The multiple groups of counterweights 34 can increase the inertia when the fuse tube 30 swings, thereby increasing the pulling force of the operating ring 32 on the traction rope 10 and improving the stability of the device.

[0037] In the embodiment of the present invention, first rotate the L plate 5 to open the cover plate 3 from the top of the limiting ring 2. At this time, the wire 33 can be placed inside the limiting ring 2 and plugged into the inside of the insulating tube 29. Subsequently, the cover plate 3 is fitted to the top of the limiting ring 2, and the L plate 5 is rotated in the opposite direction to reset. The limiting ring 2 and the cover plate 3 form a wrapped state for the wire 33. Under normal working conditions, when the wire 33 is located inside the limiting ring 2, the two clamping plates 4 are acted upon by the spring 21, which will drive the clamping plates 4 to clamp the wire 33. At this time, the wire 33 at the clamping position and the wire 33 plugged into the insulating tube 29 are limited at the same time, thereby effectively avoiding excessive local pressure on the wire 33 and the wire clamped by the clamping plate 4. The wire 33 can share part of the pressure. When the fuse body triggers the protection action, it will pull the traction rope 10. The end of the middle plate 11 facing away from the traction rope 10 is fixedly connected to the traction rope 2 12. When the traction rope 10 is subjected to force, it will synchronously pull the traction rope 2 12 through the middle plate 11. At this time, when the traction rope 12 is pulled by the traction rope 10, it will drive the limiting plate 2 13 to move in the direction of the traction rope 2 12. Since the two clamping plates 4 are in a squeezed and fixed state with the wire 33, the movement of the limiting ring 2 will pull the wire 33 to move horizontally. At this time, the wire 33 will be forced to break away from the inside of the insulating tube 29, thereby ending the power supply to the fuse body, thereby effectively preventing the residual energy storage of the capacitor. When the limiting ring 2 pulls the wire 33 through the clamping plate 4, the connecting rod 7 is synchronously in a moving state, and at this time the connecting rod 7 will drive the guide rod 22 to move, and the guide rod 22 will move inside the guide groove 24. During the lateral movement of the guide rod 22, according to the shape of the guide groove 24, it will also move back and forth vertically. When the connecting rod 7 performs a compound displacement motion along the horizontal axis, it will drive the limiting ring 2 to synchronously perform a displacement motion with the same vector trajectory. In this process, the clamping plate 4 integrated in the limiting ring 2 forms a dynamic clamping-traction coupling relationship with the wire 33. When the clamping plate 4 performs a reciprocating axial motion in the vertical direction, the wire 33 is driven to generate a compound displacement through the mechanical synergy effect. This multi-degree-of-freedom collaborative motion mode can effectively reduce the contact surface bonding energy between the wire 33 and the insulating tube 29, and realize the fatigue accumulation of the connection interface material through the superposition of periodic shear stress and normal load, thereby significantly reducing the pull-out resistance and improving the mechanical efficiency of the axial removal of the wire 33 from the insulating tube 29. When the clamping plate 4 clamps the wire 33 and moves laterally, the side plate 20 will move laterally accordingly. When the triangular block 25 contacts the hinged plate 27, the hinged plate 27 applies an extrusion force to the inclined surface of the triangular block 25. The force on the triangular block 25 will drive the side plate 20 to move toward the clamping plate 4. At this time, the clamping force of the clamping plate 4 on the wire 33 will increase, thereby increasing the friction between the clamping plate 4 and the wire 33. When the clamping plate 4 moves and squeezes the wire 33 to the limit distance and cannot move further, the spring 3 28 will be activated. When the triangular block 25 is moved over the hinge plate 27, the hinge plate 27 is reset by the elastic potential energy released by the spring three 28. Similarly, when the triangular block 25 is reset, it will still contact the hinge plate 27. When the spring three 28 is squeezed by the triangular block 25 to the limit load, it will deform. The hinge plate 27 will swing in the opposite direction at this time, providing space for the movement of the triangular block 25.

[0038] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art may make various alternative improvements and combinations to the above specific embodiments.

Claims

1. The fuse bracket structure is characterized by: include: A bracket seat (1), a limiting ring (2) is provided at the top of the bracket seat (1), a cover plate (3) is rotatably connected to the top of the limiting ring (2), and a snap assembly is provided between the limiting ring (2) and the cover plate (3); At least two clamping plates (4) arranged opposite to each other, the clamping plates (4) being arranged inside the limiting ring (2), and elastic mechanisms being provided on opposite sides of the two clamping plates (4); The connecting rod (7) is fixedly connected to the bottom end of the limiting ring (2), and an L-tube (8) is sleeved on the outer side of the end of the connecting rod (7) away from the limiting ring (2). The end of the L-tube (8) away from the connecting rod (7) is fixedly connected to a limiting plate (9), and the limiting plate (9) is slidably connected to the top end of the bracket seat (1); A traction rope (10), the bottom end of the traction rope (10) is fixedly connected to a middle plate (11), and an end of the middle plate (11) facing away from the traction rope (10) is fixedly connected to a traction rope (2) (12); The pulling mechanism is connected to the traction rope 2 (12) to control the displacement of the limit plate 1 (9).

2. The fuse holder structure according to claim 1, characterized in that: The pulling mechanism includes a limit plate 2 (13), a rack (14), a spur gear (15), a spring 1 (16), a short guide wheel (17) and a long guide wheel (18), wherein the limit plate 2 (13) is fixedly connected to the traction rope 2 (12), the limit plate 2 (13) is slidably connected to the top of the bracket seat (1), the rack (14) is respectively fixedly connected to the end close to the limit plate 1 (9) and the limit plate 2 (13), the spur gear (1 5) is rotatably connected to the bracket seat (1), and the two sides of the spur gear (15) are respectively engaged with a pair of racks (14), the short guide wheel (17) and the long guide wheel (18) are respectively arranged on the outside of the traction rope 1 (10) and the traction rope 2 (12), and the short guide wheel (17) and the long guide wheel (18) are both fixedly connected to the bracket seat (1), and the two ends of the spring 1 (16) are respectively fixedly connected to the limit plate 2 (13) and the long guide wheel (18).

3. The fuse holder structure according to claim 1, characterized in that: The elastic mechanism comprises a pair of limiting rods (19), a side plate (20) and a second spring (21). The pair of limiting rods (19) are respectively fixed to the opposite sides of the two clamping plates (4). The side plate (20) is fixed to one end of the pair of limiting rods (19) away from the clamping plate (4). The two ends of the second spring (21) are respectively fixed to the limiting ring (2) and the side plate (20).

4. The fuse holder structure according to claim 1, characterized in that: The buckle assembly comprises an L-plate (5) and a baffle (6), wherein the L-plate (5) is rotatably connected to the outer side of the cover plate (3), the baffle (6) is fixed to the outer side of the limiting ring (2), and the baffle (6) is attached to the inner side of the L-plate (5).

5. The fuse holder structure according to claim 1, characterized in that: The preset angle of the clamping plate (4) is 120°, and the clamping plate (4) is made of rubber.

6. The fuse holder structure according to claim 1, characterized in that: A guide rod (22) is fixedly connected to the outer side of the connecting rod (7), a guide plate (23) is fixedly connected to one end of the bracket seat (1) close to the limiting ring (2), a guide groove (24) is provided inside the guide plate (23), and the guide rod (22) is arranged inside the guide groove (24).

7. The fuse holder structure according to claim 6, characterized in that: The guide groove (24) is designed to be "wave-shaped".

8. The fuse holder structure according to claim 3, characterized in that: A pair of side plates (20) are fixedly connected to a triangular block (25) at one end facing away from each other, and a support plate (26) is fixedly connected to one end of the bracket seat (1) close to the limiting ring (2). An end of the support plate (26) close to the side plate (20) is rotatably connected to a hinge plate (27), and a spring (28) is fixedly connected between the hinge plate (27) and the support plate (26).

9. The fuse holder structure according to claim 8, characterized in that: The contact surface between the triangular block (25) and the hinge plate (27) is designed as an "inclined surface", and the spring three (28) is designed as an "arc-shaped surface".

10. A fuse assembly, characterized in that include: The fuse holder structure according to any one of claims 1 to 9, The fuse body includes: Insulation tube (29), bolted to the bracket seat (1): A fuse tube (30) is rotatably connected to one end of the insulating tube (29); A waterproof cover (31) is connected to the insulating tube (29), and the fuse tube (30) is embedded in the interior of the waterproof cover (31) through a locking member; An operating ring (32) connected to the outside of the fuse tube (30); Both ends of the insulating tube (29) are plugged with electric wires (33); The outer side of the fuse tube (30) is connected to a plurality of groups of counterweight blocks (34) via a cable tie, and the counterweight blocks (34) are used to increase the inertia generated when the fuse tube (30) swings.

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