A fuse-type disconnector

Abstract

The application relates to the technical field of low-voltage electrical equipment, and discloses a fuse-type isolating switch which comprises a shell, a mounting bin is arranged in the shell, a plurality of mounting grooves are arranged in the mounting bin, a fuse body is arranged in the mounting grooves, an electricity-connection end is fixedly arranged on one side of the fuse body, a plurality of electricity-connection parts are arranged in the shell, the electricity-connection end is arranged on the inner side of the electricity-connection part, a sealing plate is fixedly connected to one side of the mounting bin and closely adheres to the outer side surface of the shell, an elastic plate is arranged below the electricity-connection part, a plurality of groups of insulating plates are fixedly connected to the top surface of the elastic plate, and an outer frame is fixedly connected to the bottom surface of the shell. Through cooperation of the insulating plates and the linkage assembly, the fuse body can be quickly plugged and replaced, the mechanism can be powered off at the same time, the safety of operation is ensured, and the main power supply does not need to be disconnected.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical equipment technology, specifically to a fuse-type disconnect switch. Background Technology

[0002] Fuse-type disconnect switches are important switching devices in low-voltage power distribution systems. They work by melting the fusible element with the heat generated when the current exceeds a specified value for a period of time, thereby breaking the circuit. Their main functions are as power switches, disconnect switches, emergency switches, and AC circuit protection in power distribution circuits and motor circuits with high short-circuit currents.

[0003] Traditional fuse-type disconnect switches typically have fuses that are bolted to the inside of the switch body. Replacing the fuse requires disassembling multiple parts, which is quite cumbersome. Furthermore, when repairing the internal components of the switch, it is necessary to disconnect the external main power supply, which increases the inconvenience during use. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fuse-type disconnect switch, which solves the problems of inconvenience in replacing and disassembling the fuse body and the need to disconnect the main power supply in existing devices, thus increasing operational inconvenience.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fuse-type disconnect switch includes a housing, an installation compartment inside the housing, multiple installation slots inside the installation compartment, a fuse body inside the installation slot, a terminal fixedly installed on one side of the fuse body, multiple terminals inside the housing, the terminal being located inside the terminals, a sealing plate fixedly connected to one side of the installation compartment, the sealing plate tightly fitting against the outer surface of the housing, a telescopic plate below the terminals, multiple sets of insulating plates fixedly connected to the top surface of the telescopic plate, an outer frame fixedly connected to the bottom surface of the housing, an inner frame fixedly installed inside the outer frame, the inner frame being fixedly installed on the bottom surface of the housing, a linkage assembly fixedly connected to the bottom surface of the telescopic plate, and multiple reserved slots on the top surface of the installation compartment.

[0006] The above technical solution involves installing the fuse body inside the mounting slot, thereby allowing the capacitor body to be installed in the mounting compartment. By inserting the energizing terminal at the end of the fuse body into the energizing part, the mechanism can be energized. When the insulating plate is placed inside the energizing part, the discharge terminal of the energizing part can be insulated, thus keeping the entire mechanism in a de-energized state. Through the linkage component, the fuse body can be moved out of the outer shell for easy replacement, while also controlling the power supply status of the equipment to increase operational safety.

[0007] Preferably, the linkage assembly includes a pull block, a pull rope, a take-up roller, a rotating rod, a first worm, a first worm wheel, a connecting rod, a second worm, a second worm wheel, a screw, and a moving block. The pull block is fixedly installed on the bottom surface of the telescopic plate. One end of the pull rope is fixedly installed on one side of the pull block. The take-up roller is fixedly installed on the bottom surface of the inner frame via a fixing bracket, and the other end of the pull rope is wound around the surface of the take-up roller. Two rotating rods are fixedly installed on both sides of the take-up roller. Two first worms are fixedly installed on one end of the two rotating rods. The first worm wheel is located on one side of the first worm and is meshed with the first worm. The connecting rod is fixedly installed on the top surface of the first worm wheel. The second worm is fixedly installed on the top of the connecting rod. The second worm wheel is located on one side of the second worm and is meshed with the second worm. The screw is fixedly installed on one side of the second worm wheel. The moving block is located on the outside of the screw and is threadedly connected to the screw. Two moving blocks are fixedly installed on both sides of the mounting chamber.

[0008] Preferably, a screwing block is provided on the outer side of the outer frame, and the screwing block is fixedly connected to one of the first worm gears.

[0009] Preferably, a plurality of telescopic rods are fixedly installed on the inner side of the inner frame. The telescopic rods are divided into inner rods and outer rods. A second spring is provided inside the telescopic rod, and the two ends of the second spring are connected to the inner rod and the outer rod.

[0010] Preferably, multiple rotating rollers are rotatably installed inside the multiple sets of insulating plates, and the rotating rollers are made of insulating rubber.

[0011] Preferably, a plurality of first springs are installed on the inner side of the electrical contact part, and the first springs are made of copper alloy. One end of the first spring is fixedly connected to a conductive panel, and the electrical contact part is placed between two conductive panels.

[0012] Preferably, a heat dissipation fin is installed on one side of the outer casing, and a slot is formed on the top surface of the outer casing, with a sliding plate movably installed inside the slot.

[0013] Preferably, an L-shaped plate is movably installed inside the outer shell, with one side of the L-shaped plate embedded inside the shell, and the top surface of the L-shaped plate is fixedly connected to the sliding plate, the surface of which is provided with ventilation openings.

[0014] Preferably, the housing has multiple shape memory alloys embedded inside, with one end of each shape memory alloy connected to the surface of the L-shaped plate. The housing also has a telescopic cylinder inside, with two push rods movably installed inside the telescopic cylinder, and one end of each push rod connected to the other side of the L-shaped plate.

[0015] Preferably, the telescopic cylinder is provided with a third spring inside, and the two ends of the third spring are respectively connected to two push rods.

[0016] Working principle: When using this device, the housing can be installed in the designated position. When the fuse body is removed and replaced, the screwing block can be rotated. The screwing block drives one of the first worm gears to rotate, which drives the winding roller to rotate. The winding roller drives the other first worm gear to rotate, and the two first worm gears drive the two first worm wheels to rotate. The first worm wheels drive the two second worm gears to rotate through the connecting rod, and the second worm gears drive the second worm wheels to rotate. The two second worm wheels drive the two screws to rotate. The screws rotate synchronously, which drives the moving block to move. The moving block can then move the installation compartment to the outside of the housing, thereby removing the fuse body from the housing for easy removal.

[0017] Furthermore, when the take-up roller rotates, the pull rope can be unwound. At this time, the second spring inside the telescopic rod can push the inner rod of the telescopic rod to move outward through elastic potential energy. The inner rod pushes the telescopic plate to move upward, and the telescopic plate drives the insulating plate to move upward. The insulating plate is inserted into the inner side of the electrical contact part and contacts the conductive panel, which can de-energize the mechanism and increase the safety of replacing the fuse body.

[0018] When the internal temperature of the casing becomes too high, the shape memory alloy will reset and extend, which in turn will push the L-shaped plate to move inside the casing. The L-shaped plate pushes the sliding plate to move inside the slot, aligning the vent with the slot, thus connecting the inside of the casing with the external environment and increasing the heat dissipation effect of the casing. When the internal temperature of the casing is at room temperature, the shape memory alloy cools and softens. At this time, the third spring can push the push rod to move outward through elastic potential energy. The push rod pushes the L-shaped plate and the sliding plate to reset, thus sealing the slot and preventing dust and moisture from entering the inside of the casing and affecting the electrical components inside the casing.

[0019] This invention provides the following beneficial effects:

[0020] 1. In this invention, through the cooperation of the insulating plate and the linkage component, during use, the rotation of the screw can drive the moving block to move, which in turn drives the installation chamber and the fuse body to move outward of the outer shell. By unwinding the pull rope through the take-up roller, the telescopic plate can be moved upward, and the telescopic plate drives the insulating plate to move upward. The insulating plate and the conductive panel are positioned opposite each other, so the insulating plate can be inserted between the two conductive panels. Through the insulation characteristics of the insulating plate, the entire mechanism can be de-energized. Thus, during use, the fuse body can be quickly plugged and unplugged for replacement while the mechanism is de-energized, ensuring operational safety and eliminating the need to disconnect the main power supply.

[0021] 2. In this invention, a first spring is provided between the contact part and the conductive panel, and the first spring is staggered. Therefore, when the contact end is inserted between two conductive panels, the first spring can press the conductive panels together, which increases the uniformity of the contact surface pressure of the contact end and also prevents the contact end from falling off.

[0022] 3. In this invention, when the temperature inside the outer shell is too high, the shape memory alloy will extend and reset upon heating, thereby pushing the L-shaped plate to move inside the outer shell. When the L-shaped plate moves, it can drive the sliding plate to move inside the slot. When the L-shaped plate moves, it can align the ventilation opening with the slot, thus increasing the ventilation and heat dissipation efficiency inside the outer shell. When the temperature inside the outer shell is at room temperature, the shape memory alloy will return to its initial state. At this time, the third spring pushes the push rod to reset, and the push rod pushes the L-shaped plate to reset, thereby sealing the slot and preventing dust and moisture from entering the interior of the outer shell, increasing the service life of the internal components of the mechanism. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram showing the location of the installation compartment of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the outer casing of the present invention;

[0026] Figure 4 This is a schematic diagram of the mounting slot location for the present invention;

[0027] Figure 5 This is a schematic diagram of the position of the moving block according to the present invention;

[0028] Figure 6 This is a schematic diagram of the roller position according to the present invention;

[0029] Figure 7 This is a schematic diagram showing the position of the second spring in this invention;

[0030] Figure 8 This is a schematic diagram of the position of the first spring in this invention.

[0031] Figure 9 This is a schematic diagram showing the position of the L-shaped plate in this invention;

[0032] Figure 10 This is a schematic diagram showing the location of the ventilation openings in this invention;

[0033] Figure 11 This is a schematic diagram showing the position of the third spring in this invention.

[0034] The components are as follows: 1. Outer shell; 2. Sealing plate; 3. Outer frame; 4. Twisting block; 5. Heat dissipation fins; 6. Slot; 7. Mounting compartment; 8. Fuse body; 9. Electrical connection part; 10. Electrical connection terminal; 11. Mounting slot; 12. Reserved slot; 13. Conductive panel; 14. Telescopic plate; 15. Insulating plate; 16. Telescopic rod; 17. Inner frame; 18. Pull block; 19. Pull rope; 20. Take-up roller; 21. Rotating rod; 22. First worm gear; 23. First worm; 24. Rotating roller; 25. First spring; 26. Second spring; 27. Screw; 28. Moving block; 29. ​​Second worm gear; 30. Second worm; 31. Telescopic cylinder; 32. Push rod; 33. L-shaped plate; 34. Shape memory alloy; 35. Slide plate; 36. Ventilation opening; 37. Third spring; 38. Connecting rod. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 This invention provides a fuse-type disconnect switch, including a housing 1. An installation compartment 7 is installed inside the housing 1. Multiple installation slots 11 are provided inside the installation compartment 7. A fuse body 8 is installed inside each installation slot 11. A power terminal 10 is fixedly installed on one side of the fuse body 8. Multiple power receiving parts 9 are installed inside the housing 1, with the power receiving end 10 located inside the power receiving part 9. A sealing plate 2 is fixedly connected to one side of the installation compartment 7 and is tightly fitted to the outer surface of the housing 1. A telescopic plate 14 is provided below the power receiving part 9. Multiple sets of insulating plates 15 are fixedly connected to the top surface of the telescopic plate 14. An outer frame 3 is fixedly connected to the bottom surface of the housing 1. An inner frame 17 is fixedly installed inside the outer frame 3 and is fixedly installed on the bottom surface of the housing 1. A linkage component is fixedly connected to the bottom surface of the telescopic plate 14. Multiple reserved slots 12 are provided on the top surface of the installation compartment 7.

[0037] Specifically, the position of the reserved groove 12 is opposite to the position of the mounting groove 11. When the fuse body 8 is installed into the interior of the mounting groove 11, one end of the fuse body 8 will protrude outward by a certain distance, exposing the electrical terminal 10. Then, when the mounting chamber 7 is fully extended into the interior of the outer casing 1, the electrical terminal 10 can be inserted into the inner side of the electrical connection part 9, thereby allowing electrical energy to flow. One side of the sealing plate 2 is attached with silicone. When the mounting chamber 7 is fully placed inside the outer casing 1, the silicone on one side of the sealing plate 2 can adhere to the outer surface of the outer casing 1. The surfaces fit tightly together, which increases the sealing performance between the outer casing 1 and the sealing plate 2. When the mounting compartment 7 is moved out of the outer casing 1, the fuse body 8 inside the mounting groove 11 can be pulled upward through the reserved groove 12. At this time, the fuse body 8 can be tilted upward and its end can be removed from the mounting groove 11. By pulling the fuse body 8 outward, the fuse body 8 can be removed from the inside of the mounting groove 11. The removal process is extremely convenient. It is only necessary to move the mounting compartment 7 out of the outer casing 1, which increases the convenience of operation.

[0038] Please see the appendix Figure 3 and attached Figure 5 The linkage assembly includes a pull block 18, a pull rope 19, a take-up roller 20, a rotating rod 21, a first worm gear 23, a first worm wheel 22, a connecting rod 38, a second worm gear 30, a second worm wheel 29, a screw 27, and a moving block 28. The pull block 18 is fixedly installed on the bottom surface of the telescopic plate 14. One end of the pull rope 19 is fixedly installed on one side of the pull block 18. The take-up roller 20 is fixedly installed on the bottom surface of the inner frame 17 by a fixing bracket, and the other end of the pull rope 19 is wound around the surface of the take-up roller 20. Two rotating rods 21 are fixedly installed on both sides of the take-up roller 20, and two first worm gears 23 are fixedly installed on the two rotating rods 21. At one end, a first worm gear 22 is disposed on one side of a first worm 23 and is meshed with the first worm 23. A connecting rod 38 is fixedly installed on the top surface of the first worm gear 22. A second worm 30 is fixedly installed on the top of the connecting rod 38. A second worm gear 29 is disposed on one side of the second worm 30 and is meshed with the second worm 30. A screw 27 is fixedly installed on one side of the second worm gear 29. A moving block 28 is disposed on the outside of the screw 27 and is threadedly connected to the screw 27. The two moving blocks 28 are fixedly disposed on both sides of the mounting chamber 7.

[0039] Specifically, the screw 27 and the movable block 28 are connected by threads, and the inner wall of the outer casing 1 is symmetrically provided with movable slots for installing the screw 27 and the movable block 28. When the two screws 27 rotate synchronously in the same direction, they can drive the two movable blocks 28 to move synchronously. When the movable blocks 28 move, they can drive the installation chamber 7 to move, thereby adjusting the position of the installation chamber 7 inside the outer casing 1, which facilitates the adjustment of the position of the installation chamber 7 and increases the convenience of disassembling and assembling the fuse body 8. In actual use, by rotating one of the first worm gears 23, the first worm gear 23 can drive one of the rotating rods 21 to rotate. The rotating rod 21 drives the winding roller 20 to rotate. The rotation of the winding roller 20 can drive the rotating rod 21 and the first worm gear 23 on the other side to rotate. The two first worm gears 23 rotate synchronously in the same direction, which can drive the two first worm wheels 22 to rotate synchronously. The first worm wheels 22 drive the second worm wheel 22 through the connecting rod 38. The rotation of the second worm gear 30 drives the two second worm wheels 29 to rotate synchronously, which in turn drives the two screws 27 to rotate synchronously, thus ensuring the stability of the installation chamber 7 during movement. Simultaneously, the winding roller 20 rotates, winding the pull rope 19. When the pull rope 19 is wound, it pulls the pull block 18, which in turn moves the telescopic plate 14 inside the outer casing 1. The telescopic plate 14 moves the insulating plate 15, thus adjusting the position of the insulating plate 15, demonstrating the linkage of the mechanism. Furthermore, the insulating plate 15 is made of rubber, providing good insulation. When the insulating plate 15 is placed inside the electrical contact part 9, it isolates the flowing electrical energy, thus keeping the mechanism in a de-energized state and ensuring safety when replacing the fuse body 8. The transmission of the worm wheels and worms enables slow insertion and removal of the electrical contact end 10, reducing the generation of electric arcs and increasing the safety of insertion and removal.

[0040] Please see the appendix Figure 1 and attached Figure 5 The outer side of the outer frame 3 is provided with a screwing block 4, and the screwing block 4 is fixedly connected to one of the first worm gears 23.

[0041] Specifically, the screwing block 4 is located on the outside of the outer frame 3, which makes it easier for the operator to screw the screwing block 4, thereby driving the first worm gear 23 to rotate and increasing the convenience of operation.

[0042] Please see the appendix Figure 3 and attached Figure 7 Multiple telescopic rods 16 are fixedly installed on the inner side of the inner frame 17. The telescopic rods 16 are divided into inner rods and outer rods. A second spring 26 is provided inside the telescopic rod 16, and the two ends of the second spring 26 are connected to the inner rod and the outer rod.

[0043] Specifically, when the take-up roller 20 rewinds and pulls the pull rope 19 and the pull block 18, causing the telescopic plate 14 to move, the telescopic plate 14 moves downward and squeezes the telescopic rod 16 inward. When the telescopic rod 16 is squeezed, its inner rod squeezes the second spring 26 inward. At the same time, the second spring 26 pushes the inner rod of the telescopic rod 16 in the opposite direction through its elastic potential energy. Then, when the take-up roller 20 unwinds the pull rope 19, the second spring 26 pushes the inner rod of the telescopic rod 16 upward through its elastic potential energy. The inner rod then pushes the telescopic plate 14 upward, and the telescopic plate 14 drives the insulating plate 15 to move upward. When the insulating plate 15 moves upward to the inside of the electrical contact part 9, the mechanism is put into a de-energized state. Thus, the position of the mounting chamber 7 can be adjusted, and the de-energized state of the mechanism body can also be controlled.

[0044] Please see the appendix Figure 6 Multiple sets of insulating plates 15 have multiple rotating rollers 24 installed inside, and the rollers 24 are made of insulating rubber.

[0045] Specifically, the insulating plate 15 is made of hard rubber, and the rotating roller 24 is rotatably installed inside the insulating plate 15. When the rotating roller 24 rolls, the friction between the insulating plate 15 inserted into the inside of the power receiving part 9 and the internal components of the equipment can be reduced, thereby making it easier to insert the insulating plate 15 into the inside of the power receiving part 9 and disconnect the power to the mechanism.

[0046] Please see the appendix Figure 8 Multiple first springs 25 are installed on the inner side of the power receiving part 9, and the first springs 25 are made of copper alloy. One end of the first spring 25 is fixedly connected to a conductive panel 13, and the power receiving part 9 is placed between two conductive panels 13.

[0047] Specifically, the first spring 25 is made of copper alloy. Since copper alloy has good conductivity, the electrical energy flowing inside the mechanism can flow to the surface of the conductive panel 13 through the first spring 25. In actual use, the terminal 10 on one side of the fuse body 8 is inserted between the two conductive panels 13. Through the contact between the conductive panel 13 and the terminal 10, the current flowing through the conductive panel 13 can be transmitted to the terminal 10 and the fuse body 8. The first springs 25 on one side of the conductive panel 13 are staggered, which can increase the pressing force on the conductive panel 13, ensuring that the pressure on the contact surface between the conductive panel 13 and the terminal 10 is uniform. It also increases the stability of the terminal 10 inserted between the two conductive panels 13. In addition, the end of the terminal 10 is sloped, which makes it easy to insert the terminal 10 between the two conductive panels 13.

[0048] Please see the appendix Figure 1 and attached Figure 2 A heat dissipation fin 5 is installed on one side of the outer casing 1, and a slot 6 is opened on the top surface of the outer casing 1. A sliding plate 35 is movably installed inside the slot 6.

[0049] Specifically, one side of the slide plate 35 extends into the interior of the housing, and the part of the slide plate 35 extending into the housing is movably installed, so the slide plate 35 can move inside the slot 6. Through the heat dissipation fins 5, the heat dissipation area of ​​the housing 1 can be increased, thereby enhancing the heat dissipation efficiency of the conductive components inside the housing 1.

[0050] Please see the appendix Figure 9 and attached Figure 10 An L-shaped plate 33 is movably installed inside the outer shell 1, and one side of the L-shaped plate 33 is embedded inside the shell. The top surface of the L-shaped plate 33 is fixedly connected to the slide plate 35, and the surface of the slide plate 35 is provided with a ventilation opening 36.

[0051] Specifically, the L-shaped plate 33 is movably connected to the part of the housing that is embedded in it. Therefore, when the L-shaped plate 33 moves inside the housing, it can drive the slide plate 35 to move inside the slot 6. When the slide plate 35 moves, the ventilation opening 36 on the surface can be aligned with the slot 6, so that the space inside the housing 1 can be connected with the external environment, thereby greatly increasing the heat dissipation efficiency of the internal environment of the housing 1.

[0052] Please see the appendix Figure 9 and attached Figure 10 Multiple shape memory alloys 34 are embedded inside the outer shell 1, and one end of the shape memory alloy 34 is connected to the surface of the L-shaped plate 33. The outer shell 1 is provided with a telescopic cylinder 31, and two push rods 32 are movably installed inside the telescopic cylinder 31, and one end of the push rod 32 is connected to the other side of the L-shaped plate 33.

[0053] Specifically, the shape memory alloy 34 used in this device is an existing material, which is actually nickel-titanium alloy. When the shape memory alloy 34 is deformed in the martensitic phase at low temperature, it will be reset when heated to above its austenitic transformation temperature. When cooled, the shape memory alloy 34 will soften (enter the martensitic phase) and be easily deformed under external force. The shape memory alloy 34 used in this device is rod-shaped in the reset state. When the temperature inside the shell reaches the critical value of the shape memory alloy 34, the shape memory alloy 34 will extend outward and reset. At this time, the shape memory alloy 34 will push the L-shaped plate 33 to move inside the shell 1. The L-shaped plate 33 can drive the slide plate 35 to move inside the slot 6, thereby aligning the vent 36 with the slot 6 to increase the heat dissipation effect inside the shell. Furthermore, the shape memory alloy 34 is embedded inside the shell 1, thus preventing the shape memory alloy 34 from falling off.

[0054] Please see the appendix Figure 11 The telescopic cylinder 31 is equipped with a third spring 37 inside, and the two ends of the third spring 37 are respectively connected to two push rods 32.

[0055] Specifically, when the internal temperature of the housing is at room temperature, the shape memory alloy 34 will cool and soften, and will no longer exert a pushing force on the L-shaped plate 33. At this time, the third spring 37 will push the push rod 32 to both sides through its own elastic potential energy. The push rod 32 can push the L-shaped plate 33 to reset. The L-shaped plate 33 drives the sliding plate 35 to reset, thereby causing the vent 36 to retract into the interior of the housing 1, which can then seal the slot 6 and prevent moisture and dust from entering the interior of the housing 1 at room temperature, thus affecting the electrical components inside the housing 1.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fuse-type disconnect switch, comprising a housing (1), characterized in that, The housing (1) has an installation compartment (7) inside, and the installation compartment (7) has multiple installation slots (11) inside. The installation slots (11) have fuse bodies (8) inside, and a power terminal (10) is fixedly installed on one side of the fuse body (8). The housing (1) has multiple power receiving parts (9) inside, and the power receiving part (10) is placed inside the power receiving part (9). A sealing plate (2) is fixedly connected to one side of the installation compartment (7), and the sealing plate (2) fits tightly. On the outer surface of the outer shell (1), below the electrical connection part (9) is a telescopic plate (14). The top surface of the telescopic plate (14) is fixedly connected to multiple sets of insulating plates (15). The bottom surface of the outer shell (1) is fixedly connected to an outer frame (3). An inner frame (17) is fixedly installed inside the outer frame (3). The inner frame (17) is fixedly installed on the bottom surface of the outer shell (1). The bottom surface of the telescopic plate (14) is fixedly connected to a linkage component. The top surface of the installation compartment (7) is provided with multiple reserved slots (12). The linkage assembly includes a pull block (18), a pull rope (19), a take-up roller (20), a rotating rod (21), a first worm gear (23), a first worm wheel (22), a connecting rod (38), a second worm gear (30), a second worm wheel (29), a screw (27), and a moving block (28). The pull block (18) is fixedly installed on the bottom surface of the telescopic plate (14). One end of the pull rope (19) is fixedly installed on one side of the pull block (18). The take-up roller (20) is fixedly installed on the bottom surface of the inner frame (17) by a fixing bracket, and the other end of the pull rope (19) is wound around the surface of the take-up roller (20). Two rotating rods (21) are fixedly installed on both sides of the take-up roller (20), and two first worm gears (23) are fixedly installed on the two rotating rods (21). 1) At one end, the first worm wheel (22) is disposed on one side of the first worm (23), and the first worm wheel (22) is meshed with the first worm (23). The connecting rod (38) is fixedly installed on the top surface of the first worm wheel (22). The second worm (30) is fixedly installed on the top end of the connecting rod (38). The second worm wheel (29) is disposed on one side of the second worm (30), and the second worm wheel (29) is meshed with the second worm (30). The screw (27) is fixedly installed on one side of the second worm wheel (29). The moving block (28) is disposed on the outside of the screw (27), and the moving block (28) is threadedly connected to the screw (27). The two moving blocks (28) are fixedly disposed on both sides of the mounting chamber (7).

2. The fuse-type disconnect switch according to claim 1, characterized in that, The outer frame (3) is provided with a screwing block (4) on its outer side, and the screwing block (4) is fixedly connected to one of the first worm gears (23).

3. A fuse-type disconnector according to claim 1, characterized in that, Multiple telescopic rods (16) are fixedly installed on the inner side of the inner frame (17). The telescopic rods (16) are divided into inner rods and outer rods. A second spring (26) is provided inside the telescopic rod (16), and the two ends of the second spring (26) are connected to the inner rod and the outer rod.

4. A fuse-type disconnect switch according to claim 1, characterized in that, Multiple sets of insulating plates (15) are rotatably mounted inside, and the rotating rollers (24) are made of insulating rubber.

5. A fuse-type disconnect switch according to claim 1, characterized in that, Multiple first springs (25) are installed on the inner side of the electrical contact part (9), and the first springs (25) are made of copper alloy. One end of the first spring (25) is fixedly connected to a conductive panel (13), and the electrical contact part (9) is placed between two conductive panels (13).

6. A fuse-type disconnector according to claim 1, characterized in that, A heat dissipation fin (5) is installed on one side of the outer shell (1), and a slot (6) is opened on the top surface of the outer shell (1). A sliding plate (35) is movably installed inside the slot (6).

7. A fuse-type disconnect switch according to claim 6, characterized in that, An L-shaped plate (33) is movably installed inside the outer shell (1), and one side of the L-shaped plate (33) is embedded inside the shell. The top surface of the L-shaped plate (33) is fixedly connected to the slide plate (35), and the surface of the slide plate (35) is provided with a ventilation opening (36).

8. A fuse-type disconnect switch according to claim 7, characterized in that, Multiple shape memory alloys (34) are embedded inside the outer shell (1), and one end of the shape memory alloy (34) is connected to the surface of the L-shaped plate (33). A telescopic cylinder (31) is provided inside the outer shell (1), and two push rods (32) are movably installed inside the telescopic cylinder (31), and one end of the push rod (32) is connected to the other side of the L-shaped plate (33).

9. A fuse-type disconnector according to claim 8, characterized in that: The telescopic cylinder (31) is equipped with a third spring (37) inside, and the two ends of the third spring (37) are respectively connected to two push rods (32).

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