Fuse Compensation Structure and Compensation Method for Load-End Drawer-Type Power Distribution Cabinet

Abstract

The present invention relates to the technical field of distribution cabinets, specifically to a fuse compensation structure and a compensation method for a load-end drawer-type distribution cabinet, including: a box body, in which a plurality of pull-out drawers are arranged; pulleys, rotatably installed on the drawers, and the pulleys are in rolling cooperation with guide members arranged on the inner side of the box body, so as to keep the drawers in a horizontal state; side plates, arranged in the box body, and an elastic trigger assembly capable of horizontal movement is arranged on the side plates, and the elastic trigger assembly cooperates with a storage groove formed on the side plates, so that the elastic trigger assembly has a tendency to actively move towards the end of the movement stroke; a lifting plate, slidably arranged on the elastic trigger assembly and connected to the side plates through a follow-up structure, and the follow-up structure can drive the lifting plate to rise or fall relative to the pulleys when the elastic trigger assembly acts, so as to improve the stability after the drawer is pulled out.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution cabinets, and specifically to a fuse compensation structure and a compensation method for a load-end drawer-type distribution cabinet. Background Art

[0002] The main function of a fuse is to protect the circuit and prevent circuit damage or even fire caused by overload or short circuit. When the current exceeds the specified value, it uses the heat generated by itself to melt the fuse wire, thereby disconnecting the current to achieve the protection effect. Fuses are widely used in high and low voltage distribution systems, control systems, and electrical equipment as short circuit and overcurrent protectors.

[0003] In existing fuses, when the fuse wire breaks due to overcurrent in the circuit, it is necessary to promptly repair the circuit and replace the melted fuse wire in time after the repair is completed, so that the fuse can regain its fusing function. In this process, in order to ensure that the fuse wire is installed in place, it is generally necessary to disassemble the entire fuse, which undoubtedly increases the workload of maintenance personnel. Summary of the Invention

[0004] The purpose of the present invention is to provide a fuse compensation structure and a compensation method for a load-end drawer-type distribution cabinet to solve the problems raised in the above background art.

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

[0006] A load-end drawer-type distribution cabinet, comprising:

[0007] A box body, in which a plurality of pull-out drawers are arranged;

[0008] A pulley, rotatably installed on the drawer, and the pulley is in rolling cooperation with a guiding member arranged on the inner side of the box body, so as to keep the drawer in a horizontal state;

[0009] A side plate, arranged in the box body, and an elastic trigger assembly capable of horizontal movement is arranged on the side plate. The elastic trigger assembly cooperates with a storage groove formed on the side plate, and can make the elastic trigger assembly have a tendency to actively move towards the end of the movement stroke;

[0010] A lifting plate, slidably arranged on the elastic trigger assembly and connected to the side plate through a follower structure. The follower structure can drive the lifting plate to rise or fall relative to the pulley when the elastic trigger assembly acts.

[0011] As a further scheme of the present invention: The elastic trigger assembly includes an "L"-shaped follower, the follower is slidably connected to a first horizontal groove formed on the side plate, and a sliding connection part is arranged on the follower, and the sliding connection part is slidably connected to the lifting plate;

[0012] The elastic trigger assembly further includes an elastic telescopic rod connected to the follower. One end of the elastic telescopic rod away from the follower is rotatably installed with a first grooved pulley, and the first grooved pulley can roll in the energy storage groove.

[0013] As a further scheme of the present invention: the energy storage groove includes two second inclined grooves symmetrically arranged on the side plate. The two second inclined grooves are communicated, and a turning part is formed at the connection of the two. After the first grooved pulley moves through the turning part, the elastic telescopic rod can drive the follower to move actively along the length direction of the first horizontal groove.

[0014] As a further scheme of the present invention: the follower structure includes a second horizontal groove and a first inclined groove arranged on the side plate. The first convex shaft connecting the lifting plate can slide in the second horizontal groove and the first inclined groove to drive the lifting plate to act.

[0015] The fuse compensation structure is installed in the drawer as described in the claims and includes:

[0016] A mounting plate is connected to the drawer, and a sliding plate is slidably installed on the mounting plate;

[0017] At least two groups of arc-shaped clamping members. The two groups of arc-shaped clamping members can cooperate to fix the upper end of the fuse, and one of the groups of arc-shaped clamping members is fixed on the mounting plate;

[0018] A positioning and loading assembly is arranged on the sliding plate. The positioning and loading assembly includes a positioning structure and a transfer structure. Two driving wheels that can cooperate to clamp the fuse are installed on the positioning structure. When the sliding plate moves towards the arc-shaped clamping member, the transfer structure can drive the driving wheels to rotate, so that the fuse is delivered to the arc-shaped clamping member;

[0019] A top support assembly is connected to the sliding plate and the other group of arc-shaped clamping members. When the sliding plate moves upward, the top support assembly can drive the two groups of arc-shaped clamping members to perform a separation action once

[0020] As a further scheme of the present invention: the positioning structure includes two accommodation grooves symmetrically arranged on the sliding plate. A slider is slidably installed in the accommodation groove, and the slider is rotatably connected to the driving wheel;

[0021] The positioning structure further includes a connecting plate parallel to the sliding plate. A protruding part is arranged on the connecting plate, and the protruding part can slide in a guiding groove formed on the sliding plate;

[0022] The connecting plate is connected to a second spring provided on the sliding plate, and two third inclined grooves are symmetrically provided on the connecting plate. A second convex shaft provided on the slider can slide in the third inclined groove.

[0023] As a further solution of the present invention: The transfer structure includes a ratchet wheel coaxially and fixedly connected to the rotating shaft of one of the driving wheels. The ratchet wheel is adapted to a ratchet plate provided on the sliding plate;

[0024] The ratchet plate is provided with a fitting groove along its length direction. The fitting groove is in rolling connection with two second grooved pulleys rotatably mounted on the slider;

[0025] The ratchet plate can slide in a guiding member provided on the sliding plate.

[0026] As a further solution of the present invention: The top support assembly includes a connecting plate fixedly connected to the arc-shaped clamping member. The connecting plate is connected to an elastic structure provided on the mounting plate, and a third convex shaft is fixed on the connecting plate;

[0027] The top support assembly further includes a connecting frame fixedly connected to the sliding plate. A follower plate is mounted on the connecting frame. A switching groove slidably matched with the third convex shaft is provided on the follower plate. When the follower plate follows the movement of the sliding plate, the switching groove cooperates with the third convex shaft to drive the two arc-shaped clamping members to move relative to each other.

[0028] As a further solution of the present invention: The driving groove includes a fourth inclined groove, a third horizontal groove, a vertical groove and an extension groove provided on the follower plate. The vertical groove and the extension groove are collinear;

[0029] A reversing plate is rotatably mounted at one end of the fourth inclined groove away from the third horizontal groove.

[0030] A method for compensating a fuse wire using the fuse compensation structure includes the following steps:

[0031] Step 1: In the initial state, the upper end of the fuse wire is fixed by being clamped by two arc-shaped clamping members. At this time, the sliding plate is at the high point of its stroke under the traction of the fuse wire. When the fuse wire burns out due to excessive current, the sliding plate will fall under the action of gravity while the circuit is disconnected;

[0032] Step 2: Repair the circuit;

[0033] Step 3: After the circuit repair is completed, drive the sliding plate to move upward. At this time, the transfer structure acts to further deliver the fuse wire between the two driving wheels towards between the two arc-shaped clamping members;

[0034] Step 4: During the skateboard movement, the top support assembly will also act synchronously to separate the two arc-shaped clamping members, so that the fuse wire clamped between the two arc-shaped clamping members after fusing is separated from the arc-shaped clamping members;

[0035] Step 5: The skateboard continues to move until the fuse wire moves between the two arc-shaped clamping members. At the same time, the top support assembly drives the two arc-shaped clamping members to re-clamp the upper end of the fuse wire.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] When the drawer is pulled to the end of the stroke, the lifting plate and the follower cooperate to lock the pulley. On the one hand, it can prevent the drawer from moving excessively and separating from the box body and falling. On the other hand, the horizontal force acting on the drawer due to misoperation can be buffered by the first spring, avoiding the sliding of the box body and improving the stability of the power distribution cabinet;

[0038] When the skateboard moves upward to drive the fuse wire towards the arc-shaped clamping member, the driving wheel rotates to further deliver the fuse wire towards the arc-shaped clamping member, ensuring that when the skateboard moves to the end of the stroke, the fuse wire can be delivered between the two arc-shaped clamping members, ensuring that the arc-shaped clamping members can effectively clamp the upper end of the fuse wire. At the same time, the two driving wheels can move symmetrically, positioning the fuse wire to a certain extent, ensuring that when the fuse wire is delivered between the two arc-shaped clamping members, the fuse wire can be concentric with the circular area formed by the cooperation of the two arc-shaped clamping members, improving the clamping stability;

[0039] After the line maintenance is completed, pulling up the connecting frame can drive the skateboard and the follower plate to move upward. Under the cooperation of the third convex shaft and the fourth inclined groove, the two arc-shaped clamping members are separated, so that the upper part of the fuse wire that was originally clamped and fused by the two arc-shaped clamping members is separated from the arc-shaped clamping members. And when the fuse wire is delivered to the predetermined position, the third convex shaft will reset along the third horizontal groove and clamp the upper part of the fuse wire again, realizing the automatic compensation of the fuse wire and avoiding the cumbersome operation caused by replacing the fuse wire. Description of the Drawings

[0040] Figure 1 It is a schematic structural diagram of an embodiment of a load-end drawer-type power distribution cabinet.

[0041] Figure 2 It is a schematic side structure diagram of a drawer in an embodiment of a load-end drawer-type power distribution cabinet.

[0042] Figure 3 It is an exploded view of the side plate and the elastic trigger assembly in a load-end drawer-type power distribution cabinet.

[0043] Figure 4It is a schematic structural diagram of an embodiment of a fuse compensation structure.

[0044] Figure 5 It is a schematic structural diagram of another angle in an embodiment of a fuse compensation structure.

[0045] Figure 6 It is an exploded view of a positioning structure in an embodiment of a fuse compensation structure.

[0046] Figure 7 It is a schematic structural diagram of a top support assembly in an embodiment of a fuse compensation structure.

[0047] Figure 8 It is a schematic plan view of a follower plate in an embodiment of a fuse compensation structure.

[0048] Figure 9 It is an exploded view of a transfer structure in an embodiment of a fuse compensation structure.

[0049] In the figure: 1, box body; 2, drawer; 3, mounting plate; 301, through groove; 4, pulley; 5, guiding member; 6, side plate; 601, first horizontal groove; 602, second horizontal groove; 603, first inclined groove; 604, second inclined groove; 7, follower member; 701, sliding connection portion; 8, lifting plate; 801, first convex shaft; 9, follower sleeve; 10, first spring; 11, telescopic shaft; 12, first grooved pulley; 13, sliding plate; 1301, guiding groove; 1302, accommodating groove; 14, connecting plate; 1401, third inclined groove; 1402, protruding portion; 15, second convex shaft; 16, slider; 17, driving wheel; 18, second spring; 19, ratchet; 20, ratchet plate; 2001, fitting groove; 21, second grooved pulley; 22, guiding member; 23, connecting frame; 2301, abutting portion; 24, follower plate; 2401, fourth inclined groove; 2402, third horizontal groove; 2403, vertical groove; 2404, extension groove; 2405, reversing plate; 25, connecting plate; 2501, third convex shaft; 26, arc-shaped clamping member; 27, cross shaft; 28, third spring; 29, buzzer. Specific embodiments

[0050] 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.

[0051] In addition, an element in the present invention is referred to as "fixed to" or "disposed on" another element, and it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

[0052] Please refer to Figures 1 to 9 , in the embodiment of the present invention, a load-end drawer-type power distribution cabinet includes: a box body 1, a pulley 4, a side plate 6 and a lifting plate 8. When the drawer 2 is pulled to the end of the stroke, the lifting plate 8 cooperates with the follower 7 to lock the pulley 4. On the one hand, it can prevent the drawer 2 from moving excessively and separating from the box body 1 and falling. On the other hand, the horizontal force acting on the drawer 2 due to misoperation can be buffered by the first spring 10, avoiding the box body 1 from sliding and improving the stability of the power distribution cabinet.

[0053] Specifically as follows: A plurality of pull-out drawers 2 are arranged in the box body 1;

[0054] The pulley 4 is rotatably installed on the drawer 2, and the pulley 4 is in rolling cooperation with a guide member 5 provided on the inner side of the box body 1, so as to keep the drawer 2 in a horizontal state. Specifically, pulleys 4 are arranged on both sides of the drawer 2. Specifically, a set of pulleys 4 is arranged at the upper part of the side of the drawer 2, and three sets of pulleys 4 are arranged at the lower part. Moreover, the three sets of pulleys 4 are separately arranged, two of which are close and the other is far. And two guide members 5 are arranged in the box body 1, and the two guide members 5 are respectively in rolling contact with the pulleys 4 arranged at the upper and lower parts of the drawer 2. When the drawer 2 is completely pulled out, the two close sets of pulleys 4 and the upper pulley 4 are in contact with the two guide members 5, and these three pulleys 4 form a triangular support structure, making the stability better after the drawer 2 is pulled out. Further, a deep groove is arranged along the length direction of the guide member 5, and the pulley 4 can roll in the deep groove, avoiding the lateral displacement of the pulley 4 during movement, preventing friction or interference between the drawer 2 and the structure in the box body 1, and making the drawer 2 smoother when pulled.

[0055] The side plate 6 is arranged in the box body 1, and an elastic trigger assembly capable of horizontal movement is arranged on the side plate 6. The elastic trigger assembly cooperates with a storage groove formed on the side plate 6, enabling the elastic trigger assembly to have a tendency to move actively towards the end of the movement stroke. Specifically, the storage groove includes two second inclined grooves 604 symmetrically arranged on the side plate 6. The two second inclined grooves 604 are connected, and a turning portion is formed at the connection thereof. After the first grooved pulley 12 moves over the turning portion, the elastic telescopic rod can drive the follower 7 to move actively along the length direction of the first horizontal groove 601;

[0056] The elastic trigger assembly includes a follower 7 in an "L" shape. The follower 7 is slidably connected to a first horizontal groove 601 formed on the side plate 6, and a sliding connection portion 701 is provided on the follower 7. The sliding connection portion 701 is slidably connected to the lifting plate 8;

[0057] The elastic trigger assembly further includes an elastic telescopic rod connected to the follower 7. One end of the elastic telescopic rod away from the follower 7 is rotatably installed with a first grooved pulley 12. The first grooved pulley 12 can roll in the energy storage groove. Specifically, the elastic telescopic rod includes a follower sleeve 9 fixedly connected to the follower 7. A telescopic shaft 11 is slidably installed in the follower sleeve 9. The telescopic shaft 11 is rotatably connected to the first grooved pulley 12, and the telescopic shaft 11 is connected to a first spring 10 provided in the follower sleeve 9.

[0058] When the drawer 2 is pulled to move towards the outside of the box body 1, the upper pulley 4 will move towards the follower 7. When the upper pulley 4 is about to move to the end of the stroke, the pulley 4 will first abut against the follower 7 and drive the follower 7 to move synchronously. At this time, the follower sleeve 9 connected to the follower 7 will also follow the pulley 4 to move, so as to drive the first grooved pulley 12 to move along one of the second inclined grooves 604 through the telescopic shaft 11, compress the first spring 10. When the first grooved pulley 12 moves to the end of the second inclined groove 604 and passes through the turning portion, the first spring 10 will release elastic potential energy and actively drive the first grooved pulley 12 to move along the other second inclined groove 604. At this time, the follower 7 will move to the end along the length direction of the first horizontal groove 601 and form a stop position to prevent the pulley 4 from moving excessively and causing the drawer 2 to separate from the box body 1, resulting in the drawer 2 falling.

[0059] The lifting plate 8 is slidably arranged on the elastic trigger assembly and is connected to the side plate 6 through a follower structure. The follower structure can drive the lifting plate 8 to rise or fall relative to the pulley 4 when the elastic trigger assembly acts. The follower structure includes a second horizontal groove 602 and a first inclined groove 603 provided on the side plate 6. A first convex shaft 801 connecting the lifting plate 8 can slide in the second horizontal groove 602 and the first inclined groove 603 to drive the lifting plate 8 to act.

[0060] In the initial state, the height of the upper end of the lifting plate 8 is lower than the lowest point height of the upper pulley 4. When the drawer 2 drives the pulley 4 to move, the pulley 4 will not directly contact the lifting plate 8, but will directly cross over the lifting plate 8 and contact the follower 7. When the follower 7 is driven by the pulley 4 to move, the lifting plate 8 will move horizontally following the follower 7. At the same time, the first convex shaft 801 will also move along the first inclined groove 603. During the horizontal movement of the lifting plate 8, the lifting plate 8 will move upward. And when the first sprocket 12 moves to before the turning part, the first convex shaft 801 has moved to the end of the first inclined groove 603. At this time, the follower 7 and the lifting plate 8 cooperate to be able to block both sides of the pulley 4. Subsequently, the drawer 2 is continuously pulled, and after the first sprocket 12 crosses over the turning part, the lifting plate 8 can actively drive the pulley 4 to move to the end of the stroke. During this process, the first convex shaft 801 slides in the second horizontal groove 602 to keep the height of the lifting plate 8 constant. And when the first sprocket 12 crosses over the turning part and moves to the end of another second inclined groove 604, the follower 7 and the lifting plate 8 tend to maintain this state and can lock the pulley 4 to a certain extent, improving the stability after the drawer 2 is completely pulled out.

[0061] In the prior art, after the drawer 2 is completely pulled out, mostly mechanical forced locking is adopted to make the drawer 2 more stable when overhauling and replacing components in the drawer 2. However, this forced locking makes the connection between the drawer 2 and the box body 1 a hard connection. When an external force acts on the drawer 2, it may cause the box body 1 to shake. In this embodiment, when an external force acts on the drawer 2, the first spring 10 can buffer the movement of the drawer 2 by storing potential energy, avoiding the situation that the box body 1 shakes and improving the stability of the box body 1.

[0062] When pushing the drawer 2 to move it towards the box body 1, the above-mentioned pulley 4 will act on the lifting plate 8 to make the lifting plate 8 and the follower 7 move in the reverse direction until after the first sprocket 12 moves past the turning part, the follower 7 will actively drive the pulley 4 to move. At the same time, the first convex shaft 801 will return to the first inclined groove 603, and the height of the lifting plate 8 will gradually decrease to the reset position. Then, the drawer 2 can be manually pushed continuously until it enters the box body 1.

[0063] Through the above settings, when the drawer 2 is pulled or pushed to the end of the stroke, the lifting plate 8 and the follower 7 cooperate to be able to lock the pulley 4. On the one hand, it can avoid the situation that the drawer 2 moves excessively and separates from the box body 1 and drops. On the other hand, the horizontal force acting on the drawer 2 due to misoperation can be buffered by the first spring 10, avoiding the box body 1 from sliding and improving the stability of the power distribution cabinet.

[0064] Please refer to Figures 4 to 9, as an embodiment of the present invention, a fuse compensation structure is further proposed, which is installed in the drawer 2 and includes: a mounting plate 3, at least two groups of arc-shaped clamping members 26, a positioning and loading assembly, and a top support assembly.

[0065] The mounting plate 3 is connected to the drawer 2. A through groove 301 is provided on the mounting plate 3, and a sliding plate 13 is slidably installed in the through groove 301;

[0066] The two groups of arc-shaped clamping members 26 can cooperate to fix the upper end of the fuse. One group of the arc-shaped clamping members 26 is fixed on the mounting plate 3, and an incoming wire terminal is provided on the arc-shaped clamping member 26. An outgoing wire terminal is also provided on the mounting plate 3. The outgoing wire terminal is connected to the mounting plate 3, and the arc portion at the end of the outgoing wire terminal fits with the fuse, so that the current can smoothly move from the incoming wire terminal to the outgoing wire terminal through the fuse;

[0067] The positioning and loading assembly is arranged on the sliding plate 13. The positioning and loading assembly includes a positioning structure and a transfer structure. Two driving wheels 17 that can cooperate to clamp the fuse are installed on the positioning structure. The transfer structure can drive the driving wheels 17 to rotate when the sliding plate 13 moves towards the arc-shaped clamping member 26, so that the fuse is delivered to the arc-shaped clamping member 26;

[0068] The positioning structure includes two retention grooves 1302 symmetrically arranged on the sliding plate 13. A slider 16 is slidably installed in the retention groove 1302. The slider 16 is rotatably connected to the driving wheel 17. It should be noted that a damping sleeve is provided at the rotating shaft of the driving wheel 17, which can ensure that the sliding plate 13 does not fall due to the self-rotation of the driving wheel 17 when one end of the fuse is fixed;

[0069] The positioning structure further includes a connecting plate 14 parallel to the sliding plate 13. A protruding portion 1402 is provided on the connecting plate 14, and the protruding portion 1402 can slide in a guiding groove 1301 formed on the sliding plate 13;

[0070] The connecting plate 14 is connected to a second spring 18 arranged on the sliding plate 13, and two third inclined grooves 1401 are symmetrically arranged on the connecting plate 14. A second convex shaft 15 arranged on the slider 16 can slide in the third inclined groove 1401;

[0071] The transfer structure includes a ratchet wheel 19 coaxially and fixedly connected to the rotating shaft of one of the driving wheels 17. The ratchet wheel 19 is adapted to a ratchet plate 20 arranged on the sliding plate 13;

[0072] The ratchet plate 20 is provided with a fitting groove 2001 along its length direction, and the fitting groove 2001 is in rolling connection with two second grooved pulleys 21 rotatably mounted on the slider 16. Among them, a clamp is arranged on the ratchet plate 20 and is connected to the ratchet plate 20 through an elastic sheet;

[0073] The ratchet plate 20 can slide within a guide member 22 provided on the slide plate 13.

[0074] In the initial state, the two sets of arc-shaped clamping members 26 cooperate to clamp the upper part of the fuse. At this time, due to the existence of the damping sleeve, the driving wheel 17 will not rotate, and the slide plate 13 is in a suspended state. At the same time, under the action of the gravity of structures such as the slide plate 13, the slider 16, and the driving wheel 17, the fuse can be in a straightened state, so that the outgoing wire terminal can better fit with the fuse, ensuring the normal flow of current.

[0075] When an overcurrent occurs in the circuit, in order to avoid damage to the power control components in the circuit, the fuse will actively fuse. After fusing, the slide plate 13 will lose the traction of the fuse and drive the driving wheel 17 to move downward under the action of gravity. At this time, the ratchet 19 will not engage with the ratchet plate 20, and the driving wheel 17 can remain in a non-rotating state.

[0076] Subsequently, the circuit will be repaired. After the repair is completed, the slide plate 13 is manually pulled upward. During this process, the fuse clamped between the two driving wheels 17 will move upward synchronously. When the ratchet 19 engages with the ratchet plate 20, the driving wheel 17 will be driven to rotate, and the fuse can move towards the slide plate 13. When the slide plate 13 moves to the end of the stroke, the fuse can be delivered between the two arc-shaped clamping members 26. Based on the above principle, when the slide plate 13 moves upward to drive the fuse towards the arc-shaped clamping members 26, the driving wheel 17 rotates so that the fuse can be further delivered towards the arc-shaped clamping members 26, ensuring that when the slide plate 13 moves to the end of the stroke, the fuse can be delivered between the two arc-shaped clamping members 26, and ensuring that the arc-shaped clamping members 26 can effectively clamp the upper end of the fuse.

[0077] Further, the second convex shaft 15 cooperates with the third inclined groove 1401, enabling the two sliders 16 to move closer to or away from each other. Moreover, the movement direction of the connecting plate 14 is perpendicular to the movement direction of the sliders 16. When the connecting plate 14 moves, the two sliders 16 can move symmetrically. Meanwhile, under the traction of the second spring 18, the connecting plate 14 can be pulled, ensuring that the two sliders 16 tend to move closer to each other, thereby enabling the clamping of the fuse wire. The fuse wire within a certain diameter range can be clamped. On the one hand, when the driving wheel 17 rotates, the fuse wire can be driven to move. On the other hand, the fuse wire can be positioned to a certain extent to ensure that when the fuse wire is delivered between the two arc-shaped clamping members 26, the fuse wire is concentric with the circular area formed by the cooperation of the two arc-shaped clamping members 26, that is, it has a certain positioning effect.

[0078] Through the above settings, when the sliding plate 13 moves upward to drive the fuse wire towards the arc-shaped clamping members 26, the driving wheel 17 rotates, enabling the fuse wire to be further delivered towards the arc-shaped clamping members 26. To ensure that when the sliding plate 13 moves to the end of the stroke, the fuse wire can be delivered between the two arc-shaped clamping members 26, ensuring that the arc-shaped clamping members 26 can effectively clamp the upper end of the fuse wire. At the same time, the two driving wheels 17 can move symmetrically, positioning the fuse wire to a certain extent to ensure that when the fuse wire is delivered between the two arc-shaped clamping members 26, the fuse wire is concentric with the circular area formed by the cooperation of the two arc-shaped clamping members 26, improving the clamping stability.

[0079] Please refer to Figure 5 、 Figure 7 、 Figure 8 As shown in, the top support assembly is connected to the sliding plate 13 and the other group of arc-shaped clamping members 26. When the sliding plate 13 moves upward, the top support assembly can drive the two groups of arc-shaped clamping members 26 to perform a separation action once. The top support assembly includes a connecting plate 25 fixedly connected to the arc-shaped clamping member 26. The connecting plate 25 is connected to an elastic structure provided on the mounting plate 3. A third convex shaft 2501 is fixed on the connecting plate 25. Among them, the elastic structure includes a horizontal shaft 27 provided on the mounting plate 3. The horizontal shaft 27 is slidably connected to the connecting plate 25, and a third spring 28 is sleeved on the horizontal shaft 27. One end of the third spring 28 is connected to the connecting plate 25, and the other end is connected to the end of the horizontal shaft 27.

[0080] The top support assembly further includes a connecting frame 23 fixedly connected to the sliding plate 13. A follower plate 24 is installed on the connecting frame 23. A switching groove slidably cooperating with the third convex shaft 2501 is provided on the follower plate 24. When the follower plate 24 follows the movement of the sliding plate 13, the switching groove cooperates with the third convex shaft 2501, driving the two arc-shaped clamping members 26 to move relative to each other.

[0081] An abutting portion 2301 is further formed on the crank 23, and the abutting portion 2301 is adapted to a buzzer 29 provided on the mounting plate 3;

[0082] Furthermore, the driving groove includes a fourth inclined groove 2401, a third horizontal groove 2402, a vertical groove 2403 and an extension groove 2404 provided on the follower plate 24, and the vertical groove 2403 and the extension groove 2404 are collinear;

[0083] A reversing plate 2405 is rotatably installed at one end of the fourth inclined groove 2401 away from the third horizontal groove 2402, and the reversing plate 2405 is connected to the follower plate 24 through an elastic piece.

[0084] After the fuse melts, the slide plate 13 will move downward. At this time, the abutting portion 2301 on the crank 23 abuts against the buzzer 29 and can trigger the buzzer 29 to sound, thereby reminding the staff to perform immediate maintenance.

[0085] After the fuse melts and the circuit is repaired, the crank 23 is pushed upward. At this time, the slide plate 13 and the follower plate 24 will also move upward accordingly. During the upward movement of the follower plate 24, the third convex shaft 2501 will move along the extension groove 2404. After the third convex shaft 2501 moves to the end of the extension groove 2404, the third convex shaft 2501 will move toward the fourth inclined groove 2401 under the action of the reversing plate 2405. At this time, the third convex shaft 2501 will drive one of the arc-shaped clamping members 26 to move away from the other arc-shaped clamping member 26 through the connecting plate 25, so that the upper part of the melted fuse originally clamped by the two arc-shaped clamping members 26 is separated from the arc-shaped clamping members 26. During the continuous upward movement of the slide plate 13 and the follower plate 24, the distance between the two arc-shaped clamping members 26 will gradually increase. When the fuse is delivered between the two arc-shaped clamping members 26, the third convex shaft 2501 just moves to the end of the fourth inclined groove 2401. At this time, the third spring 28 releases elastic potential energy, enabling the third convex shaft 2501 to move along the third horizontal groove 2402, so that the two arc-shaped clamping members 26 move closer to each other to complete the clamping of the upper end of the fuse, thus completing the compensation for the fuse and avoiding the cumbersome operation caused by replacing the fuse.

[0086] After the fuse melts, the slide plate 13 and the follower plate 24 will move downward. At this time, the third convex shaft 2501 will move along the vertical groove 2403 to the end of the extension groove 2404. When abutting against the reversing plate 2405, it will drive the reversing plate 2405 to deflect. After they are separated, the reversing plate 2405 will reset under the action of the elastic piece.

[0087] With the above settings, after the maintenance of the circuit is completed, the pull-up link 23 can drive the slide plate 13 and the follower plate 24 to move upward, and under the cooperation of the third convex shaft 2501 and the fourth inclined groove 2401, the two arc-shaped clamping members 26 are separated, so that the upper part of the fuse wire originally clamped and melted by the two arc-shaped clamping members 26 is separated from the arc-shaped clamping members 26, and when the fuse wire is delivered to the predetermined position, the third convex shaft 2501 will reset along the third horizontal groove 2402 again, and clamp the upper part of the fuse wire again, realizing the automatic compensation of the fuse wire and avoiding the cumbersome operation caused by replacing the fuse wire.

[0088] A method for compensating a fuse wire using the described fuse compensating structure includes the following steps:

[0089] Step 1: In the initial state, the upper end of the fuse wire is fixed by being clamped by the two arc-shaped clamping members 26. At this time, the slide plate 13 is at the high point of its stroke under the traction of the fuse wire. When the fuse wire burns out due to excessive current, the slide plate 13 will fall under the action of gravity while the circuit is disconnected;

[0090] Step 2: Perform maintenance on the circuit;

[0091] Step 3: After the circuit maintenance is completed, drive the slide plate 13 to move upward. At this time, the transfer structure acts to further deliver the fuse wire between the two driving wheels 17 towards the space between the two arc-shaped clamping members 26;

[0092] Step 4: When the slide plate 13 moves, the top support assembly will also act synchronously to separate the two arc-shaped clamping members 26 from each other, so that the fuse wire clamped between the two arc-shaped clamping members 26 after fusing is separated from the arc-shaped clamping members 26;

[0093] Step 5: The slide plate 13 continues to move until the fuse wire moves between the two arc-shaped clamping members 26. At the same time, the top support assembly drives the two arc-shaped clamping members 26 to re-clamp the upper end of the fuse wire.

[0094] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0095] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. The fuse compensation structure of the drawer-type distribution cabinet at the load end is characterized by: Installed in the drawer (2) of the drawer-type power distribution cabinet at the load end, including: A mounting plate (3) connected to the drawer (2), a slide plate (13) being slidably mounted on the mounting plate (3); At least two groups of arc-shaped clamping members (26), the two groups of arc-shaped clamping members (26) being able to cooperate to fix the upper end of the fuse, and one group of the arc-shaped clamping members (26) being fixed on the mounting plate (3); a positioning and loading assembly, arranged on the slide plate (13), the positioning and loading assembly comprising a positioning structure and a transfer structure, the positioning structure being provided with two sets of driving wheels (17) that cooperate to clamp the fuse, the transfer structure being able to drive the driving wheels (17) to rotate when the slide plate (13) moves toward the arc-shaped clamping member (26), so that the fuse is delivered to the arc-shaped clamping member (26); A supporting assembly is connected to the slide plate (13) and another group of arc-shaped clamping members (26). When the slide plate (13) moves upward, the supporting assembly can drive the two groups of arc-shaped clamping members (26) to perform a separation action.

2. The fuse compensation structure of the load-side drawer-type power distribution cabinet according to claim 1 is characterized in that The positioning structure comprises two retardation grooves (1302) symmetrically arranged on the slide plate (13), a slider (16) is slidably mounted in the retardation groove (1302), and the slider (16) is rotationally connected to the driving wheel (17); The positioning structure further comprises a connecting plate (14) parallel to the sliding plate (13), the connecting plate (14) being provided with a protrusion (1402), the protrusion (1402) being capable of sliding in a guide groove (1301) formed on the sliding plate (13); The connecting plate (14) is connected to a No. 2 spring (18) arranged on the sliding plate (13), and two No. 3 inclined grooves (1401) are symmetrically arranged on the connecting plate (14), and a No. 2 convex shaft (15) arranged on the sliding block (16) is capable of sliding in the No. 3 inclined grooves (1401).

3. The fuse compensation structure of the load-end drawer-type power distribution cabinet according to claim 2 is characterized in that: The transfer structure comprises a ratchet wheel (19) coaxially fixedly connected to the rotating shaft of one of the driving wheels (17), and the ratchet wheel (19) is adapted to a ratchet plate (20) arranged on the slide plate (13); The ratchet plate (20) is provided with an engaging groove (2001) along its length direction, and the engaging groove (2001) is rollingly connected to two No. 2 groove wheels (21) rotatably mounted on the slider (16); The ratchet plate (20) is capable of sliding in a guide member (22) provided on the slide plate (13).

4. The fuse compensation structure of the load-side drawer-type power distribution cabinet according to claim 1 is characterized in that: The supporting assembly comprises a connecting plate (25) fixedly connected to the arc-shaped clamping member (26), the connecting plate (25) being connected to an elastic structure provided on the mounting plate (3), and a third cam shaft (2501) being fixed on the connecting plate (25); The supporting assembly further comprises a connecting frame (23) fixedly connected to the slide plate (13), a follower plate (24) being mounted on the connecting frame (23), and a switching groove slidably engaged with the third cam shaft (2501) being provided on the follower plate (24); when the follower plate (24) follows the movement of the slide plate (13), the switching groove engages with the third cam shaft (2501) to drive the two arc-shaped clamping members (26) to move relative to each other.

5. The fuse compensation structure of the load-end drawer-type power distribution cabinet according to claim 4 is characterized in that: The switching slot comprises a fourth inclined slot (2401), a third horizontal slot (2402), a vertical slot (2403) and an extension slot (2404) arranged on the follower plate (24), wherein the vertical slot (2403) and the extension slot (2404) are collinear; A reversing plate (2405) is rotatably mounted on one end of the fourth inclined groove (2401) away from the third horizontal groove (2402).

6. A method for compensating a blown fuse using the fuse compensation structure of a load-side drawer-type power distribution cabinet as claimed in claim 1, characterized in that: The following steps are involved: Step 1: In the initial state, the upper end of the fuse is clamped and fixed by two arc-shaped clamping members (26), and at this time, the slide plate (13) is at the highest point of its travel under the traction of the fuse, and when the fuse burns out due to excessive current, the slide plate (13) falls under the action of gravity and the circuit is disconnected; Step 2: Repair the line; Step 3: After the line maintenance is completed, the slide plate (13) is driven to move upward, and the transfer structure is activated to transfer the fuse between the two driving wheels (17) further toward between the two arc-shaped clamping members (26); Step 4: When the slide plate (13) moves, the supporting assembly will also move synchronously to separate the two arc-shaped clamping members (26) from each other, thereby separating the fuse wire clamped between the two arc-shaped clamping members (26) after melting from the arc-shaped clamping members (26); Step 5: The slide plate (13) continues to move until the fuse moves between the two arc-shaped clamping members (26), and at the same time, the supporting assembly drives the two arc-shaped clamping members (26) to re-clamp the upper end of the fuse.

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