Outdoor high-voltage combination switch

Abstract

The utility model discloses an outdoor high-voltage combination switch, which belongs to the field of power distribution equipment and comprises an installation support, an installation support column vertically fixed on the installation support, a plurality of first insulators arranged on the installation support column, a fixing plate arranged at one end of the installation support column far away from the installation support, and a U-shaped support fixed in the middle of the fixing plate. A movable plate is hinged to the U-shaped support through hinge holes, the movable plate is provided with a plurality of adjusting assemblies on two sides of the U-shaped support, one end of the mounting support is provided with a lightning arrester device, and the other end of the mounting support is provided with a fuse device. The U-shaped supports provide supporting points for vertical adjustment of the two ends of the movable plate, height adjustment of the two sides of the movable plate is achieved by combining the adjusting assemblies, the height of the movable plate relative to the fixed plate can be changed by replacing the U-shaped supports with different side wall heights at the same time, and therefore the device can adapt to various lightning arrester devices and fuse devices with different heights. The adaptability of the combined switch to lightning arrester devices and fuse devices with different heights is improved.

Description

Technical Field

[0001] The utility model relates to the field of power distribution equipment, in particular to an outdoor high-voltage combination switch. Background Art

[0002] The drop-out arrester contains a fault indicator device. When the arrester is abnormal or fails, the power frequency short-circuit current is used to activate the disconnector, causing the disconnector grounding terminal to automatically disconnect, the arrester components to fall, and the operation to prevent the accident from further expanding. It is also easy for maintenance personnel to discover and maintain and replace it in time. The drop-out fuse is installed on the branch line of the distribution line to reduce the scope of power outages. Because it has an obvious disconnection point and has the function of an isolating switch, it creates a safe working environment for the maintenance section lines and equipment and increases the sense of security for maintenance personnel.

[0003] The utility model patent with Chinese publication number "CN207938559U" discloses a multifunctional lightning protection fuse, including a mounting bracket, a pillar mounted in a vertical direction on the mounting bracket, a seesaw hinged on the pillar, the two ends of the seesaw are arranged on both sides of the pillar opposite to each other and are respectively provided with a first slot and a second slot, a lightning arrester is mounted on the left side of the mounting bracket and a fuse is mounted on the right side, the upper end of the lightning arrester is provided with a first head that engages with the first slot, and the lower end is provided with a connection with the mounting bracket through a disengagement rod, and the disengagement rod is used to break when struck by lightning to cause the lightning arrester to fall.

[0004] However, the seesaw of the above-mentioned combination switch passes through the pillar and is hinged to the pillar. When the seesaw needs to be replaced during high-altitude operations, the seesaw needs to be pulled out of the pillar before a new one can be reinstalled. At the same time, the input terminal is set at the top of the pillar. When connecting or repairing the line, the operator needs to stretch his arm or use a long tool to reach the input terminal. This is not only inconvenient to operate, but may also cause problems such as loose connection or poor contact, affecting the normal operation and reliability of the equipment, and it is difficult to meet the needs of efficient, convenient and safe maintenance and repair of power equipment.

[0005] Therefore, it is necessary to make improvements to the above-mentioned defects. Utility Model Content

[0006] The purpose of the utility model is to provide an outdoor high-voltage combination switch with fast adjustment of lightning arresters and fuses, and quick overall installation and maintenance, so as to solve the above problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an outdoor high-voltage combination switch, comprising a mounting bracket, a mounting support vertically fixed on the mounting bracket, the mounting support provided with a plurality of first insulators, a fixing plate provided at one end of the mounting support away from the mounting bracket, a U-shaped bracket fixed in the middle of the fixing plate, a plurality of hinge holes provided on the end walls on both sides of the U-shaped bracket, the U-shaped bracket is hinged with a movable plate through the hinge holes, the movable plate is provided with a plurality of adjustment components on both sides of the U-shaped bracket, a lightning arrester device is provided at one end of the mounting bracket and a fuse device is provided at the other end, the lightning arrester device and the fuse device are linked with the movable plate, and an input terminal is also provided on the side of the movable plate close to the fuse device.

[0008] By adopting the above technical solution: the mounting pillar is rectangular, which can well support the fixed pillar and the lightning arrester device and the fuse device. The multiple insulators on the mounting pillar can effectively improve the electrical insulation effect of the mounting pillar in the line and prevent abnormal current from passing through the mounting pillar. In addition, the U-shaped bracket provides a support point for the up and down adjustment of the two ends of the movable plate. The movable plate adjusts the distance between the movable plate and the fixed plate through the adjustment components on both sides to achieve height adjustment of the two sides of the movable plate. At the same time, by replacing the U-shaped bracket with different side wall heights, the height of the movable plate relative to the fixed plate can be changed, thereby adapting to a variety of lightning arrester devices and fuse devices of different heights, improving the adaptability of the combination switch to lightning arrester devices and fuse devices of different heights. Moreover, after removing the hinge bolt and the adjustment component between the U-shaped bracket and the movable plate, the movable plate can be moved toward the opening direction of the U-shaped bracket and then the entire movable plate can be removed, which is convenient for replacing and repairing the movable plate. The input terminal is arranged on the movable plate, which can quickly connect the high-voltage wire to the combination switch, and can improve the sensitivity of the combination switch to overvoltage and overcurrent, thereby improving the protection capability of the line.

[0009] The above outdoor high-voltage combination switch can be further configured as follows: the adjustment component includes an adjustment bolt that passes through the movable plate and the fixed plate, the end of the adjustment bolt is provided with several fixings for fastening, and the middle of the adjustment bolt is also provided with an adjustment spring.

[0010] By adopting the above technical solution: the adjusting bolt passes through the movable plate and the fixed plate, and the end portion prevents the adjusting bolt from falling off through the fixing piece, and cooperates with the adjusting bolt to limit the height of both sides of the movable plate and the fixed plate. At the same time, one end of the adjusting spring close to the fuse device side abuts against the end face of the movable plate, and the other end abuts against the end face of the fixed plate, while the adjusting spring close to the lightning arrester device side abuts against the end face of the adjusting bolt, and the other end abuts against the end face of the movable plate. By rotating the adjusting bolts on both sides, the length of the adjusting spring will be adjusted with the height of both sides, and the position of the movable plate can be kept fixed to prevent the movable plate from slipping after the adjustment is completed.

[0011] The above-mentioned outdoor high-voltage combination switch can be further configured as follows: the lightning arrester device includes a lightning arrester element and a detachment assembly, the detachment assembly is hinged to the mounting bracket, a slot is provided on the side of the movable plate close to the lightning arrester element, the movable plate is also provided with a lightning arrester connection plate for connecting the lightning arrester element to the movable plate, a first hook ring is provided on one end of the lightning arrester element close to the movable plate, and a grounding terminal is also provided on the side of the mounting bracket close to the detachment assembly.

[0012] By adopting the above technical solution: the lightning arrester element and the disconnection component cooperate to realize a drop-type lightning arrester. When the lightning arrester has an abnormal fault, the high-frequency short-circuit current passes through the disconnection component, causing the disconnection component to automatically disengage, and the lightning arrester element naturally falls down. The lightning arrester element disengages from the slot at the end of the movable plate and the lightning arrester connecting plate, and exits operation to prevent the accident from further expanding. It is also easy for maintenance personnel to promptly discover and maintain and replace it. After the damaged lightning arrester element is replaced, the lightning arrester element can be driven to rotate toward the movable rod by passing the hook rod through the first hook ring, and re-connected with the movable plate to complete the rapid installation and connection of the lightning arrester element. At the same time, the grounding terminal is set on the mounting bracket, so that after the disconnector completes its work, it can ensure that the overvoltage can be safely released, thereby improving the safety of the combination switch.

[0013] The above-mentioned outdoor high-voltage combination switch can be further configured as follows: the disconnection component includes a disconnector arranged at the end of the lightning arrester element, a static touch plate hinged to the mounting bracket, a moving touch plate arranged at the end of the lightning arrester, and a wire connecting the lightning arrester element and the static touch plate.

[0014] By adopting the above technical solution: when the lightning arrester element is activated due to overvoltage or fails itself, the disconnector is triggered, causing the moving contact plate and the static contact plate to rotate relative to each other, the wire is disconnected, and the lightning arrester element automatically falls, cutting off the fault current path, avoiding the expansion of the fault, and ensuring circuit safety.

[0015] The above-mentioned outdoor high-voltage combination switch can be further configured as follows: the fuse device includes a fuse tube, a fuse support and a tightening assembly, the fuse support is provided with a plurality of second insulators, the fuse support is hinged to the side of the mounting bracket away from the separation assembly, the tightening assembly is used to connect the fuse support and the fuse tube, a protective plate is provided at an end of the movable plate close to one end of the fuse device, an upper static contact is provided under the protective plate, an upper moving contact and a lower moving contact are respectively provided at both ends of the fuse tube, the tightening assembly is provided with a lower static contact linked to the lower moving contact, a second hook ring is provided at one end of the fuse tube close to the movable plate, the protective plate is hinged with a fuse connecting plate for clamping the fuse tube and the movable plate, and the protective plate is also provided with an arc extinguishing hook plate.

[0016] By adopting the above technical solution: after the fuse penetrates the melting tube, the tension of the fuse is used to tighten the upper and lower moving contacts, and the melting tube remains closed. When a fault occurs in the circuit system, the fault current causes the fuse to melt quickly and form an arc. The arc-extinguishing tube is heated by the arc and decomposes a large amount of gas, which forms a very high pressure in the tube and blows strongly longitudinally along the tube. The arc is quickly elongated and extinguished, and the upper and lower moving contacts of the melting tube lose tension and loosen. The upper moving contact slides down, and the melting tube falls by its own weight. The tightening mechanism releases the melting tube, and the melting tube falls to form an obvious disconnection position. At the same time, the gas pushes the melting tube down, further increasing the falling speed of the melting tube. After repairing and replacing the melting tube, the fuse device can be quickly connected to the circuit through the second hook ring, thereby ensuring the stable operation of the combination switch.

[0017] The above-mentioned outdoor high-voltage combination switch can be further configured as follows: the tightening assembly includes a first guide plate arranged at the end of the fuse pillar, a tightening hook plate clamped with the first guide plate, a second guide plate clamped with the fuse tube, and a rotating shaft arranged on the second guide plate for linkage with the tightening hook plate, and the first guide plate is also provided with an output terminal.

[0018] By adopting the above technical solution: the tightening hook plate is tightly engaged with the first guide plate to ensure stable current transmission, and the second guide plate and the rotating shaft work together to fix the fuse tube, ensuring circuit connectivity. When the fuse tube blows due to overload or short circuit, the tightening hook plate is forced to separate from the first guide plate at the moment of melting, quickly cutting off the circuit. The output terminal on the first guide plate is used to connect to the external circuit to achieve current output and transmission. This not only enhances the connection stability and reliability of the fuse device, but also can quickly respond to cut off the circuit after melting, effectively protecting the line and equipment from damage caused by overload or short circuit current. At the same time, it facilitates the replacement and maintenance of the fuse tube, further improving the safety and practicality of the outdoor high-voltage combination switch, and ensuring its stable operation in complex outdoor environments.

[0019] The beneficial effects of the utility model are:

[0020] First, the combination switch realizes adaptive adjustment of lightning arrester devices and fuse devices of different heights by means of a fixed plate, a U-shaped bracket and a movable plate hinged to the U-shaped bracket arranged on the mounting pillar. The adjusting bolt and the adjusting spring cooperate with each other to adjust the height of both sides of the movable plate and to support the movable plate to prevent the movable plate from shifting, causing the connection between the lightning arrester device and the fuse device to fail, thereby improving the stability of the overall structure of the combination switch. In addition, the input terminal is arranged on the side of the movable plate close to the fuse, and the sensitivity of the combination switch to overvoltage and overcurrent is improved, thereby improving the protection capability of the line.

[0021] Second, both the fuse device and the lightning arrester device are drop-out type. When the circuit is overcurrent, the fuse in the melting tube melts and forms an arc. The arc extinguishing tube is heated by the arc and decomposes a large amount of gas, which forms a very high pressure in the tube and blows strongly vertically along the tube. The arc is quickly stretched and extinguished. At the same time, the lower static contact loses tension and flips down, causing the tightening mechanism to release the fuse tube. The fuse tube falls to form an obvious breaking position, thereby disconnecting the line. When the circuit is overvoltage, the high-frequency short-circuit current causes the disconnector to work, the disconnector grounding terminal is automatically disconnected, the lightning arrester component flips over, and exits operation to prevent the accident from further expanding. The drop-out type fuse device and the drop-out type lightning arrester device are easy for maintenance personnel to promptly discover, maintain, and replace.

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of embodiment 1 of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of the second embodiment of the present utility model;

[0025] Label Notes:

[0026] Mounting bracket 1, mounting pillar 11, first insulator 12, fixing plate 13, U-shaped bracket 14, hinge hole 15, movable plate 16, slot 161, lightning protection connecting plate 162, protective plate 163, fuse connecting plate 164, arc extinguishing hook plate 165, adjustment assembly 17, adjustment bolt 171, fixing piece 172, adjustment spring 173, input terminal 18, lightning arrester device 2, lightning arrester element 21, disconnection assembly 22, disconnector 221, static contact plate 222, moving contact plate 223, wire 224, first hook ring 23, grounding terminal 24, fuse device 3, fuse tube 31, fuse pillar 32, second insulator 321, tightening assembly 33, first guide plate 331, tightening hook plate 332, second guide plate 333, rotating shaft 334, second hook ring 34, output terminal 35. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0028] like Figure 1An outdoor high-voltage combination switch shown in the figure includes a mounting bracket 1, on which a mounting pillar 11 is vertically fixed, and the mounting pillar 11 is provided with four first insulators 12. A fixing plate 13 is provided at the end of the mounting pillar 11 away from the mounting bracket 1, and a U-shaped bracket 14 is fixed in the middle of the fixing plate 13. A plurality of hinge holes 15 are opened on the end walls on both sides of the U-shaped bracket 14, and the U-shaped bracket 14 is hingedly connected to a movable plate 16 through the hinge holes 15. The movable plate 16 is respectively provided with an adjustment component 17 on both sides of the U-shaped bracket 14. The adjustment component 17 includes an adjusting bolt 171 that passes through and connects the movable plate 16 and the fixed plate 13. The end of the adjusting bolt 171 is provided with a plurality of fixings 172 for fastening. An adjustment spring 173 is also provided in the middle of the adjusting bolt 171. A lightning arrester device 2 is provided at one end of the mounting bracket 1 and a fuse device 3 is provided at the other end. The lightning arrester device 2 and the fuse device 3 are linked with the movable plate 16, and the movable plate 16 is also provided with an input terminal 18 on the side close to the fuse device 3.

[0029] The mounting bracket 1 is rectangular and can well support the fixed pillar, the lightning arrester device 2 and the fuse device 3. The multiple insulators on the mounting pillar 11 can effectively improve the electrical insulation effect of the mounting pillar 11 in the circuit and prevent abnormal current from passing through the mounting pillar 11. In addition, the U-shaped bracket 14 provides a support point for the up and down adjustment of the two ends of the movable plate 16. The movable plate 16 adjusts the distance between the movable plate 16 and the fixed plate 13 on both sides through the adjustment components 17 on both sides. The adjustment bolt 171 passes through the movable plate 16 and the fixed plate 13. The end is prevented from falling off by the fixing piece 172 to cooperate with the adjustment bolt 171 to limit the height of the movable plate 16 and the fixed plate 13 on both sides. By replacing the U-shaped bracket 14 with different side wall heights, the height of the movable plate 16 relative to the fixed plate 13 can be changed, so that it can adapt to a variety of lightning arrester devices 2 and fuse devices 3 with different heights, thereby improving the adaptability of the combination switch to lightning arrester devices 2 and fuse devices 3 with different heights. In addition, the U-shaped bracket 14 is connected to the hinge bolt and After the adjustment assembly 17 is removed, the movable plate 16 can be moved toward the opening direction of the U-shaped bracket 14 and the entire movable plate 16 can be removed, which is convenient for the replacement and maintenance of the movable plate 16. At the same time, one end of the adjustment spring 173 near the fuse device 3 is in contact with the end face of the movable plate 16 and the other end is in contact with the end face of the fixed plate 13, while the adjustment spring 173 near the lightning arrester device 2 is in contact with the end face of the adjustment bolt 171 and the other end is in contact with the end face of the movable plate 16. By rotating the adjustment bolts 171 on both sides, the adjustment spring 173 is adjusted. The length of 73 will be adjusted with the height of both sides, and the position of the movable plate 16 can be kept fixed to prevent the movable plate 16 from slipping after the adjustment is completed. At the same time, it can adapt to the height of the lightning arrester device 2 and the fuse device 3, thereby improving the adaptability of the combination switch to lightning arrester devices 2 and fuse devices 3 of different heights. At the same time, the input terminal 18 is set on the movable plate 16, which can quickly connect the high-voltage wire to the combination switch, and can improve the sensitivity of the fuse to short-circuit current, thereby improving the protection capability of the line.

[0030] The arrester device 2 includes an arrester element 21 and a disengagement assembly 22, which is hinged to the mounting bracket 1. A slot 161 is provided on the side of the movable plate 16 close to the arrester element 21. The movable plate 16 is also provided with a lightning arrester connecting plate 162 for connecting the arrester element 21 to the movable plate 16. A first hook ring 23 is provided at one end of the arrester element 21 close to the movable plate 16, and a grounding terminal 24 is also provided on the side of the mounting bracket 1 close to the disengagement assembly 22. The disengagement assembly 22 includes a disengager 221 provided at the end of the arrester element 21, a static touch plate 222 hinged to the mounting bracket 1, a moving touch plate 223 provided at the end of the arrester, and a wire 224 connecting the arrester element 21 and the static touch plate 222.

[0031] The arrester element 21 cooperates with the disconnect assembly 22 to realize a drop-type arrester. When the arrester fails abnormally, the high-frequency short-circuit current passes through the disconnect assembly 22, and the disconnector 221 is triggered, causing the movable contact plate 223 and the static contact plate 222 to rotate relative to each other. The wire 224 is disconnected, and the arrester element 21 automatically falls, cutting off the fault current path, avoiding the expansion of the fault, ensuring the safety of the circuit, and making it easy for maintenance personnel to promptly discover and maintain and replace it. After the damaged arrester element 21 is replaced, the arrester element 21 can be driven to rotate toward the movable rod by passing the hook rod through the first hook ring 23, and re-engaged with the movable plate 16 to complete the quick installation and connection of the arrester element 21. At the same time, the grounding terminal 24 is arranged on the mounting bracket 1, so that after the disconnector 221 completes its work, it can ensure that the overvoltage can be safely released, thereby improving the safety of the combination switch.

[0032] The fuse device 3 includes a fuse tube 31, a fuse support 32 and a tightening assembly 33. The fuse support 32 is provided with four second insulators 321. The fuse support 32 is hinged to the side of the mounting bracket 1 away from the separation assembly 22. The tightening assembly 33 is used to connect the fuse support 32 and the fuse tube 31. The movable plate 16 is provided with a protective plate 163 at one end near the fuse device 3. An upper static contact is provided below the protective plate 163. An upper moving contact and a lower moving contact are provided at both ends of the fuse tube 31. The tightening assembly 33 is provided with a lower static contact linked to the lower moving contact. The fuse tube A second hook ring 34 is provided at one end of 31 near the movable plate 16, and the protective plate 163 is hinged with a fuse connecting plate 164 for clamping the melting tube 31 and the movable plate 16. The protective plate 163 is also provided with an arc extinguishing hook plate 165. The tightening assembly 33 includes a first guide plate 331 provided at the end of the fuse pillar 32, a tightening hook plate 332 clamped with the first guide plate 331, a second guide plate 333 clamped with the melting tube 31, and a rotating shaft 334 provided on the second guide plate 333 for linkage with the tightening hook plate 332. The first guide plate 331 is also provided with an output terminal 35.

[0033] After the fuse penetrates the melting tube 31, the tension of the fuse is used to tighten the upper and lower moving contacts, and the melting tube 31 remains closed. When a fault occurs in the circuit system, the fault current causes the fuse to melt quickly and form an arc. The arc-extinguishing tube is heated by the arc, decomposing a large amount of gas, which forms a very high pressure in the tube and blows strongly longitudinally along the tube. The arc is quickly stretched and extinguished, and the upper and lower moving contacts of the melting tube 31 lose tension and become loose. The upper moving contact slides downward, and the melting tube 31 falls by its own weight. The tightening mechanism releases the melting tube 31, and the tightening hook plate 332 is subjected to force at the moment of melting and the second The first guide plate 331 is separated, quickly cutting off the circuit. The output terminal 35 on the first guide plate 331 is used to connect to the external circuit to realize the output and transmission of current. It not only enhances the connection stability and reliability of the fuse device 3, but also can quickly respond to cut off the circuit after melting. The fuse tube 31 falls to form a clear disconnection position. At the same time, the gas pushes the fuse tube 31 downward, further increasing the falling speed of the fuse tube 31. After repairing and replacing the fuse tube 31, the fuse device 3 can be quickly connected to the circuit through the second hook ring 34, thereby ensuring the stable operation of the combination switch. Example 2

[0034] like Figure 2 As shown, compared with the technical solution of embodiment 1, the difference of embodiment 2 is that the mounting support 11 and the fuse support 32 are longer, 9 first insulators 12 are provided on the mounting support 11, and 9 second insulators 321 are provided on the fuse support 32. The lightning arrester element 21 can withstand higher overvoltages, the length of the fuse tube 31 adapts to the overall height, and the carrying capacity of the combination switch is improved.

[0035] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An outdoor high-voltage combination switch, comprising a mounting bracket, a mounting support vertically fixed to the mounting bracket, and a plurality of first insulators provided on the mounting support, characterized in that: The mounting pillar is provided with a fixed plate at one end away from the mounting bracket, a U-shaped bracket is fixed in the middle of the fixed plate, a number of hinge holes are provided on the end walls on both sides of the U-shaped bracket, the U-shaped bracket is hinged with a movable plate through the hinge holes, and the movable plate is provided with a number of adjustment components on both sides of the U-shaped bracket, a lightning arrester device is provided at one end of the mounting bracket and a fuse device is provided at the other end, the lightning arrester device and the fuse device are linked with the movable plate, and the movable plate is also provided with an input terminal on the side close to the fuse device.

2. The outdoor high-voltage combination switch according to claim 1, characterized in that: The adjustment assembly includes an adjustment bolt that passes through and connects the movable plate and the fixed plate. The end of the adjustment bolt is provided with a plurality of fixing pieces for fastening, and the middle of the adjustment bolt is also provided with an adjustment spring.

3. The outdoor high-voltage combination switch according to claim 1, characterized in that: The lightning arrester device includes a lightning arrester element and a detachment assembly, the detachment assembly is hinged to the mounting bracket, a slot is provided on the side of the movable plate close to the lightning arrester element, the movable plate is also provided with a lightning arrester connecting plate for connecting the lightning arrester element to the movable plate, the lightning arrester element is provided with a first hook ring on one end close to the movable plate, and the mounting bracket is also provided with a grounding terminal on the side close to the detachment assembly.

4. The outdoor high-voltage combination switch according to claim 3, characterized in that: The disconnect assembly includes a disconnector arranged at the end of the arrester element, a static contact plate hinged to the mounting bracket, a dynamic contact plate arranged at the end of the arrester, and a wire connecting the arrester element and the static contact plate.

5. The outdoor high-voltage combination switch according to claim 1, characterized in that: The fuse device includes a fuse tube, a fuse support and a tightening assembly. The fuse support is provided with a plurality of second insulators. The fuse support is hinged to the side of the mounting bracket away from the separation assembly. The tightening assembly is used to connect the fuse support and the fuse tube. The movable plate is provided with a protective plate at one end near the fuse device. An upper static contact is provided below the protective plate. An upper moving contact and a lower moving contact are respectively provided at both ends of the fuse tube. The tightening assembly is provided with a lower static contact linked to the lower moving contact. The fuse tube is provided with a second hook ring at one end near the movable plate. The protective plate is hinged with a fuse connecting plate for clamping the fuse tube and the movable plate. The protective plate is also provided with an arc extinguishing hook plate.

6. The outdoor high-voltage combination switch according to claim 5, characterized in that: The tightening assembly includes a first guide plate arranged at the end of the fuse pillar, a hook plate clamped to the first guide plate, a second guide plate clamped to the fuse tube, and a rotating shaft arranged on the second guide plate for linkage with the hook plate. The first guide plate is also provided with an output terminal.

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