A bus duct plug-in switch box with fire extinguishing capability

Abstract

The present invention discloses a busbar duct plug-in switch box with fire extinguishing capability, which belongs to the technical field of electric power equipment, and comprises a busbar duct body, and a plug-in switch box is plugged into the top of the busbar duct body. In the present invention, the first telescopic inner shaft is driven by the telescopic outer cylinder to perform synchronous action, and in this process, the elastic member associated with the first telescopic inner shaft performs a stretching movement inside the telescopic outer cylinder under the action of its own reset elastic force, and then turns on the switch on the fire extinguisher, and the fire extinguishing material sprayed by the fire extinguisher is wrapped around the outer surface of the power switch, that is, the open flame is covered and suffocated by the fire extinguishing material, and the double prevention and control effectively improves the safety factor of the power switch, avoids the spread of fire, and ensures the safety of the surrounding environment of the busbar duct body. When a fault occurs, protective measures can be automatically taken, and the safety performance is high. In addition, the length of the sliding connecting rod is short, so the fire occurring at the power switch can be quickly extinguished.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power equipment, and in particular relates to a bus duct plug-in switch box with fire extinguishing capability. Background Art

[0002] A busbar is a common path to which multiple devices are connected in parallel branches. In a computer system, it refers to a shared high-speed path to which multiple computers are connected in parallel, which can be used to transmit data between these computers at will, but only one device can send data at the same time. The plug-in busbar is an AC three-phase four-wire or five-wire system, suitable for power supply and distribution with a frequency of 50-60Hz, a rated current of 100A-6300A, and a rated voltage of less than 690V. It is particularly suitable for low-voltage power distribution systems in industrial plants, mines, etc. and power supply systems in high-rise commercial and residential buildings, hotels, hospitals, etc.

[0003] The prior art discloses some invention patents in the field of power equipment technology, among which Chinese patent CN102290756B discloses a bus duct plug-in switch box, including a box body, the box body including a box door, a box bottom, two side panels and two sealing panels respectively connected to the box door and the box bottom, and a heat sink arranged on the side panels, a pair of guide members protruding from the box bottom for positioning and guiding when the bus duct plug-in switch box is connected to the bus duct, the heat sink extends outward perpendicular to the side panels, and is characterized in that the bus duct plug-in switch box also includes an interlocking mechanism for preventing it from being plugged in and unplugged when the load is not cut off; the interlocking mechanism includes an operating handle arranged on the box door, a linkage steel wire connected to the operating handle and controlled by the operating handle, and a guide sleeved on the outside of the linkage steel wire. The invention relates to a method for producing a bus duct having a plurality of locking members, wherein the locking members are arranged on a plurality of locking means and wherein the locking members are arranged on a plurality of locking means. The locking members are arranged on a plurality of locking means and wherein the locking members are arranged on a plurality of locking means. The locking members are arranged on a plurality of locking means and wherein the locking members are arranged on a plurality of locking means. The locking members are arranged on a plurality of locking means and wherein the locking members are arranged on a plurality of locking means.

[0004] The bus duct plug-in switch box in the prior art is prone to high temperature when a short-circuit fault occurs in the power switch, and may even cause a fire in severe cases. The bus duct plug-in switch box in the prior art mostly uses a temperature sensor to detect the operating status of the power switch inside the switch box. Since the temperature sensor is an electronic product, it may fail or run out of power, affecting the rescue time. In addition, since there are no timely remedial measures, the vacuum period when the power workers rush to the scene will cause the fire to spread rapidly, thereby endangering the safety of surrounding buildings or life and property, and causing a greater impact on the outside world.

[0005] Based on this, the present invention designs a bus duct plug-in switch box with fire extinguishing capability to solve the above problem. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that in the bus duct plug-in switch box in the prior art, if a short-circuit fault occurs in the power switch, high temperature is likely to be generated, and even a fire may be caused in severe cases. The bus duct plug-in switch box in the prior art mostly uses a temperature sensor to detect the operating status of the power switch inside the switch box. Since the temperature sensor is an electronic product, it may fail or run out of power, affecting the rescue time. In addition, since there are no timely remedial measures, the vacuum period when the power workers rush to the scene will cause the fire to spread rapidly, thereby endangering the safety of surrounding buildings or life and property, and causing a greater impact on the outside world. A bus duct plug-in switch box with fire extinguishing capability is proposed.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A busbar duct plug-in switch box with fire extinguishing capability, comprising a busbar duct body, a plug-in switch box plugged into the top of the busbar duct body, a power switch fixedly mounted on the side end surface inside the plug-in switch box, an input end of the power switch electrically connected to a plurality of wire posts, and a wire cutting assembly is sleeved on the periphery of the plurality of wire posts, and the bottom of the wire cutting assembly is fixedly connected to the bottom of the inner side of the plug-in switch box;

[0009] A fire extinguisher is arranged on the side of the power switch, and a second passive trigger component is fixedly connected to a side of the fire extinguisher close to the power switch. A through hole is provided on the side end surface of the second passive trigger component, and an active trigger component is embedded in the through hole. Both ends of the active trigger component are respectively fixedly connected to the opposite surfaces of the fire extinguisher and the power switch, and a second passive trigger component is arranged below the active trigger component, and the bottom of the second passive trigger component is fixedly connected to the top of the wire cutting component.

[0010] As a further description of the above technical solution:

[0011] The wire cutting assembly includes an outer frame, which is sleeved on the periphery of multiple wire poles, and the bottom of the outer frame is fixedly connected to the bottom of the inner side of the plug-in switch box. The inner side wall of the outer frame is provided with a sliding connection groove, and a sliding connection seat is slidably connected in the sliding connection groove. The side end face of the sliding connection seat is fixedly connected with a first supporting spring, and the other end of the first supporting spring is fixedly connected to the end face of the inner side of the sliding connection groove. An insulating seat is fixedly connected to the position of the sliding connection seat corresponding to the multiple wire poles, and a cutting knife is fixedly connected to a side of the insulating seat close to the multiple wire poles, and the position of the insulating seat corresponding to the cutting knife is set as a slope structure.

[0012] As a further description of the above technical solution:

[0013] The side end surface of the insulating seat is overlapped with a limiting seat, and the side of the limiting seat away from the multiple wire columns is fixedly connected to a second supporting spring, the other end of the second supporting spring is fixedly connected to the end surface on the inner side of the outer frame, and the top of the limiting seat is fixedly connected to a bridge-type connecting frame.

[0014] As a further description of the above technical solution:

[0015] The second passive trigger component includes a second adapter frame, an inner side wall of the second adapter frame is clamped with a bearing, a first adapter shaft is rotatably connected in the bearing, a telescopic outer cylinder is embedded in the second adapter frame, the telescopic outer cylinder is fixedly connected to the opposite surface of the first adapter shaft, the end of the first adapter shaft is fixedly connected to the second torsion coupling, the surface of the second torsion coupling is sleeved with a second force storage spring, one end of the second force storage spring is fixedly connected to the surface of the second torsion coupling, and the other end of the second force storage spring is fixedly connected to a surface close to the second adapter frame.

[0016] As a further description of the above technical solution:

[0017] A first telescopic inner shaft is sleeved in the port at the top of the telescopic outer cylinder, one end of the first telescopic inner shaft is fixedly connected to the end surface of the inner side of the telescopic outer cylinder through an elastic member, and the other end of the first telescopic inner shaft abuts against the switch on the fire extinguisher. A second telescopic inner shaft is sleeved in the port at the bottom of the telescopic outer cylinder, an end of the second telescopic inner shaft is fixedly connected to the end surface of the inner side of the telescopic outer cylinder through an elastic member, and the through hole is provided on the side end surface of the second telescopic inner shaft.

[0018] As a further description of the above technical solution:

[0019] The active trigger assembly includes a rear support seat, a first force storage rope and a second force storage rope, one end of the first force storage rope is fixedly connected to the side end surface of the power switch through a hot melt line, the other end of the first force storage rope is fixedly connected to the top of the trigger seat, one end of the second force storage rope is fixedly connected to the side end surface of the power switch through a hot melt line, and the other end of the first force storage rope is fixedly connected to a surface close to the second telescopic inner shaft.

[0020] As a further description of the above technical solution:

[0021] A rear support seat is fixedly connected to the side of the fire extinguisher facing away from the power switch, and the bottom of the rear support seat is fixedly connected to the bottom of the inner side of the plug-in switch box. A switch box cover is provided on the side of the rear support seat away from the fire extinguisher, and the switch box cover is fixedly connected to the opposite side of the plug-in switch box.

[0022] As a further description of the above technical solution:

[0023] The first passive trigger component includes a first adapter frame, the bottom of the first adapter frame is fixedly connected to the top of the outer frame, an adapter-type linkage shaft is embedded in the inner side of the first adapter frame, the end of the adapter-type linkage shaft is fixedly connected to the second adapter shaft, the surface of the second adapter shaft is sleeved with a bearing, the bearing is clamped on the end face of the inner side of the adapter frame, the end of the second adapter shaft is fixedly connected to the first torsion coupling, the surface of the first torsion coupling is sleeved with a first force storage spring, one end of the first force storage spring is fixedly connected to the surface of the first torsion coupling, and the other end of the first force storage spring is fixedly connected to a side close to the first adapter frame.

[0024] As a further description of the above technical solution:

[0025] The top of the transfer-type linkage shaft is fixedly connected with a trigger seat, and the side end surface of the transfer-type linkage shaft is fixedly connected to one end close to the bridge-type connecting frame.

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0027] 1. In the present invention, under the action of the reset elastic force of the second force storage spring, the trigger seat is flipped through the adapter linkage shaft, and the second telescopic inner shaft will drive the telescopic outer cylinder to rotate on the inner side of the second adapter frame. The first telescopic inner shaft is driven by the telescopic outer cylinder to perform synchronous action, and in this process, the elastic member associated with the first telescopic inner shaft stretches inside the telescopic outer cylinder under the action of its own reset elastic force, thereby turning on the switch on the fire extinguisher. The fire extinguishing material sprayed by the fire extinguisher is wrapped around the outer surface of the power switch, that is, the open flame is covered and suffocated by the fire extinguishing material. The double prevention and control effectively improves the safety factor of the power switch, avoids the spread of fire, and ensures the safety of the environment around the bus duct body. In the event of a fault, protective measures can be automatically taken, and the safety performance is high. Therefore, the fire occurring at the power switch can be quickly extinguished.

[0028] 2. In the present invention, under the action of the reset elastic force of the first force storage spring, the transfer-type linkage shaft rotates. The rotation of the transfer-type linkage shaft will also drive the limit card seat to flip through the bridge-type connecting frame. The flipped limit card seat will instantly disengage and release the limiting effect on the insulating seat. Since the insulating seat loses the supporting force from the limit card seat, at this time, under the action of the reset elastic force of the first supporting spring, the sliding connecting seat will drive the insulating seat and the cutting knife on the insulating seat to slide in the sliding connecting groove and move in the direction close to multiple wire poles. The cutting knife in the fast moving state can cut multiple insulating poles at the same time, and the cutting knife uses insulating material corresponding to the position between two wire poles, thereby avoiding the undesirable phenomenon of short circuit between two adjacent wire poles. After being cut off, the cutting knife will abut on the end face of the insulating seat along the slope, thereby completely releasing the electrical connection relationship between the power switch and the bus duct body, avoiding the expansion of power failure, and further improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention;

[0030] Figure 2 This is a structural schematic diagram of a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention from another perspective;

[0031] Figure 3 This is a schematic cross-sectional view of a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention;

[0032] Figure 4 A bus duct plug-in switch box with fire extinguishing capability proposed by the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0033] Figure 5A schematic cross-sectional view of a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention from another perspective;

[0034] Figure 6 This is a structural schematic diagram of a second passive triggering component of a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention;

[0035] Figure 7 A bus duct plug-in switch box with fire extinguishing capability proposed by the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0036] Figure 8 This is a structural schematic diagram of a wire cutting assembly in a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention;

[0037] Fig. 9 A schematic structural diagram of a combination of a wire cutting component and a second passive triggering component in a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention;

[0038] Fig.10 This is a structural schematic diagram from another perspective of a second passive trigger component in a bus duct plug-in switch box with fire extinguishing capability proposed by the present invention.

[0039] Legend:

[0040] 1. Bus duct body; 2. Plug-in switch box; 3. Switch box cover; 4. Power switch; 5. Wire column; 6. Wire cutting assembly; 601. Outer frame; 602. Sliding connection slot; 603. Sliding connection seat; 604. First support spring; 605. Cutting knife; 606. Insulating seat; 607. Limiting seat; 608. Bridge connection frame; 609. Second support spring; 7. First passive trigger assembly; 701. First storage spring; 702. Rotating Connecting linkage shaft; 703, first torque coupling; 704, first adapter; 705, trigger seat; 8, active trigger assembly; 801, rear support seat; 802, first force storage rope; 803, second force storage rope; 9, second passive trigger assembly; 901, second adapter; 902, telescopic outer cylinder; 903, second torque coupling; 904, second force storage spring; 905, first telescopic inner shaft; 906, second telescopic inner shaft; 10, fire extinguisher. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-10 The present invention provides a technical solution: a busbar duct plug-in switch box with fire extinguishing capability, comprising a busbar duct body 1, a plug-in switch box 2 is plugged into the top of the busbar duct body 1, a power switch 4 is fixedly installed on the side end surface inside the plug-in switch box 2, the input end of the power switch 4 is electrically connected to a plurality of wire posts 5, and a wire cutting assembly 6 is sleeved on the periphery of the plurality of wire posts 5, and the bottom of the wire cutting assembly 6 is fixedly connected to the bottom of the inner side of the plug-in switch box 2;

[0043] A fire extinguisher 10 is arranged on the side of the power switch 4, and a second passive trigger component 9 is fixedly connected to a side of the fire extinguisher 10 close to the power switch 4. A through hole is opened on the side end face of the second passive trigger component 9, and an active trigger component 8 is embedded in the through hole. The two ends of the active trigger component 8 are respectively fixedly connected to the opposite surfaces of the fire extinguisher 10 and the power switch 4, and a second passive trigger component 9 is arranged below the active trigger component 8. The bottom of the second passive trigger component 9 is fixedly connected to the top of the wire cutting component 6.

[0044] Specifically, Figure 4 , 6 As shown in Figure 7, the wire cutting assembly 6 includes an outer frame 601, which is sleeved on the periphery of the plurality of wire posts 5, and the bottom of the outer frame 601 is fixedly connected to the bottom of the inner side of the plug-in switch box 2. The inner side wall of the outer frame 601 is provided with a sliding connection groove 602, and a sliding connection seat 603 is slidably connected in the sliding connection groove 602. The side end surface of the sliding connection seat 603 is fixedly connected to a first support spring 604, and the other end of the first support spring 604 is fixedly connected to the end surface of the inner side of the sliding connection groove 602, and the end surface of the sliding connection seat 603 corresponds to The positions of the multiple wire posts 5 are fixedly connected with an insulating seat 606, and a cutting knife 605 is fixedly connected to a side of the insulating seat 606 close to the multiple wire posts 5. The position of the insulating seat 606 corresponding to the cutting knife 605 is set to a slope structure, and the side end surface of the insulating seat 606 is overlapped with a limiting clamping seat 607, and a side of the limiting clamping seat 607 away from the multiple wire posts 5 is fixedly connected with a second supporting spring 609, and the other end of the second supporting spring 609 is fixedly connected to the inner end surface of the outer frame 601, and the top of the limiting clamping seat 607 is fixedly connected to a bridge-type connecting frame 608.

[0045] The specific implementation method is as follows: the plug-in switch box 2 realizes the electrical connection relationship with the bus duct body 1 in a plug-in manner. During the operation of the built-in power switch 4 in the plug-in switch box 2, if an abnormal overheating occurs, or even an open flame occurs, the hot melt wires on the first force storage rope 802 and the second force storage rope 803 will melt. Since the first force storage spring 701 and the second force storage spring 904 are in a deformed state at this time, when the tension of the first force storage rope 802 and the second force storage rope 803 acting on the trigger seat 705 and the second telescopic inner shaft 906 respectively disappears, under the action of the reset elastic force of the first force storage spring 701, the transfer linkage shaft 702 rotates. The rotation of the transfer linkage shaft 702 will also drive the limit clamping seat 607 to flip through the bridge connecting frame 608. After the flip, the limit The holder 607 will instantly disengage and release the limiting effect on the insulating holder 606. Since the insulating holder 606 has lost the supporting force from the limiting holder 607, at this time, under the action of the reset elastic force of the first support spring 604, the sliding connection seat 603 will drive the insulating holder 606 and the cutting knife 605 on the insulating holder 606 to slide in the sliding connection groove 602, and move in the direction close to the multiple wire poles 5. The cutting knife 605 in the fast moving state can cut multiple insulating poles at the same time, and the cutting knife 605 uses insulating material corresponding to the position between the two wire poles 5, thereby avoiding the undesirable phenomenon of short circuit between the two adjacent wire poles 5. After being cut off, the cutting knife 605 will abut against the end face of the insulating holder 606 along the slope, thereby completely releasing the electrical connection between the power switch 4 and the bus duct body 1.

[0046] Specifically, Figure 5 and 7 -9, the second passive trigger component 9 includes a second adapter frame 901, the inner side wall of the second adapter frame 901 is clamped with a bearing, the first adapter shaft is rotatably connected in the bearing, a telescopic outer cylinder 902 is embedded in the second adapter frame 901, the telescopic outer cylinder 902 is fixedly connected to the opposite surface of the first adapter shaft, the end of the first adapter shaft is fixedly connected to the second torsion coupling 903, the surface of the second torsion coupling 903 is sleeved with a second force storage spring 904, one end of the second force storage spring 904 is fixedly connected to the surface of the second torsion coupling 903, and the other end of the second force storage spring 904 is The second adapter frame 901 is fixedly connected to a side close to the telescopic outer cylinder 901, a first telescopic inner shaft 905 is sleeved in the port on the top of the telescopic outer cylinder 902, one end of the first telescopic inner shaft 905 is fixedly connected to the inner end face of the telescopic outer cylinder 902 through an elastic member, the other end of the first telescopic inner shaft 905 abuts against the switch on the fire extinguisher 10, a second telescopic inner shaft 906 is sleeved in the port at the bottom of the telescopic outer cylinder 902, the end of the second telescopic inner shaft 906 is fixedly connected to the inner end face of the telescopic outer cylinder 902 through an elastic member, and a through hole is opened on the side end face of the second telescopic inner shaft 906.

[0047] The specific implementation method is as follows: under the action of the reset elastic force of the second force storage spring 904, the trigger seat 705 is flipped through the adapter linkage shaft 702, and the second telescopic inner shaft 906 will drive the telescopic outer cylinder 902 to rotate on the inner side of the second adapter frame 901, and the first telescopic inner shaft 905 is driven by the telescopic outer cylinder 902 to perform synchronous action, and in this process, the elastic part associated with the first telescopic inner shaft 905 stretches inside the telescopic outer cylinder 902 under the action of its own reset elastic force, thereby turning on the switch on the fire extinguisher 10, and the fire extinguishing substance sprayed by the fire extinguisher 10 is wrapped around the outer surface of the power switch 4.

[0048] Specifically, Figure 7 As shown, the active trigger assembly 8 includes a rear support seat 801, a first force storage rope 802 and a second force storage rope 803, one end of the first force storage rope 802 is fixedly connected to the side end surface of the power switch 4 through a hot melt line, the other end of the first force storage rope 802 is fixedly connected to the top of the trigger seat 705, one end of the second force storage rope 803 is fixedly connected to the side end surface of the power switch 4 through a hot melt line, and the other end of the first force storage rope 802 is fixedly connected to a side close to the second telescopic inner shaft 906.

[0049] The specific implementation method is as follows: the plug-in switch box 2 realizes the electrical connection relationship with the bus duct body 1 in a plug-in manner. During the operation of the built-in power switch 4 in the plug-in switch box 2, if an abnormal overheating occurs, or even an open flame occurs, the hot melt wires on the first force storage rope 802 and the second force storage rope 803 will melt, and under the action of the reset elastic force of the second force storage spring 904, the trigger seat 705 will flip through the adapter linkage shaft 702, and the second telescopic inner shaft 906 will drive the telescopic outer cylinder 902 to rotate on the inner side of the second adapter frame 901. The first telescopic inner shaft 905 performs synchronous action under the drive of the telescopic outer cylinder 902, and in this process, the elastic member associated with the first telescopic inner shaft 905 stretches inside the telescopic outer cylinder 902 under the action of its own reset elastic force, thereby turning on the switch on the fire extinguisher 10, and the fire extinguishing substance sprayed by the fire extinguisher 10 is wrapped around the outer surface of the power switch 4.

[0050] Specifically, Figure 3-5 As shown in Figures 7-8, a side of the fire extinguisher 10 facing away from the power switch 4 is fixedly connected to a rear support seat 801, the bottom of the rear support seat 801 is fixedly connected to the bottom of the inner side of the plug-in switch box 2, and a switch box cover 3 is provided on the side of the rear support seat 801 away from the fire extinguisher 10, and the switch box cover 3 is fixedly connected to the opposite side of the plug-in switch box 2.

[0051] Specifically, Figure 4 and7 As shown, the first passive trigger component 7 includes a first adapter frame 704, the bottom of the first adapter frame 704 is fixedly connected to the top of the outer frame 601, the inner side of the first adapter frame 704 is embedded with an adapter-type linkage shaft 702, the end of the adapter-type linkage shaft 702 is fixedly connected to the second adapter shaft, the surface of the second adapter shaft is sleeved with a bearing, the bearing is clamped on the end face of the inner side of the adapter frame, the end of the second adapter shaft is fixedly connected to the first torsion coupling 703, the surface of the first torsion coupling 703 is sleeved with a first force storage spring 701, one end of the first force storage spring 701 is fixedly connected to the surface of the first torsion coupling 703, the other end of the first force storage spring 701 is fixedly connected to a surface close to the first adapter frame 704, the top of the adapter-type linkage shaft 702 is fixedly connected to a trigger seat 705, and the side end face of the adapter-type linkage shaft 702 is fixedly connected to an end close to the bridge-type connecting frame 608.

[0052] The specific implementation method is as follows: the transfer-type linkage shaft 702 rotates, and the rotation of the transfer-type linkage shaft 702 will also drive the limit clamping seat 607 to flip over through the bridge-type connecting frame 608. After the flip, the limit clamping seat 607 will instantly disengage and release the limiting effect on the insulating seat 606. Since the insulating seat 606 loses the supporting force from the limit clamping seat 607, at this time, under the action of the reset elastic force of the first supporting spring 604, the sliding connecting seat 603 will drive the insulating seat 606 and the cutting knife 605 on the insulating seat 606 to slide in the sliding connecting groove 602.

[0053] Working principle, when using:

[0054] The plug-in switch box 2 is electrically connected to the bus duct body 1 in a plug-in manner. During the operation of the built-in power switch 4 in the plug-in switch box 2, if an abnormal overheating occurs or even an open flame occurs, the hot melt wires on the first force storage rope 802 and the second force storage rope 803 will melt. Since the first force storage spring 701 and the second force storage spring 904 are in a deformed state at this time, when the tension of the first force storage rope 802 and the second force storage rope 803 acting on the trigger seat 705 and the second telescopic inner shaft 906 respectively disappears, the transfer linkage shaft 702 rotates under the action of the reset elastic force of the first force storage spring 701. The rotation of the transfer linkage shaft 702 will also drive the limit clamping seat 607 to flip through the bridge-type connecting frame 608. After the flip, the limit clamping seat 607 will instantly disengage and release As for the limiting effect of the insulating seat 606, since the insulating seat 606 loses the supporting force from the limiting clamping seat 607, at this time, under the action of the return elastic force of the first supporting spring 604, the sliding connecting seat 603 will drive the insulating seat 606 and the cutting knife 605 on the insulating seat 606 to slide in the sliding connecting groove 602, and move in the direction close to the multiple wire posts 5. The cutting knife 605 in the fast moving state can cut multiple insulating posts at the same time, and the cutting knife 605 is selected from insulating materials corresponding to the position between the two wire posts 5, so that the undesirable phenomenon of short circuit between the two adjacent wire posts 5 can be avoided. After being cut off, the cutting knife 605 will abut on the end face of the insulating seat 606 along the slope, so that the electrical connection between the power switch 4 and the bus duct body 1 can be completely released, thereby avoiding the expansion of power failure and further improving safety.

[0055] Under the action of the reset elastic force of the second force storage spring 904, the trigger seat 705 is flipped through the adapter linkage shaft 702, and the second telescopic inner shaft 906 will drive the telescopic outer cylinder 902 to rotate on the inner side of the second adapter frame 901, and the first telescopic inner shaft 905 is driven by the telescopic outer cylinder 902 to perform synchronous action, and in this process, the elastic member associated with the first telescopic inner shaft 905 stretches inside the telescopic outer cylinder 902 under the action of its own reset elastic force, thereby turning on the switch on the fire extinguisher 10, and the fire extinguishing substance sprayed by the fire extinguisher 10 is wrapped around the outer surface of the power switch 4, that is, the open flame is covered and suffocated by the fire extinguishing substance, and the double prevention and control effectively improves the safety factor of the power switch 4, avoids the spread of fire, and ensures the safety of the environment around the bus duct body 1. When a fault occurs, protective measures can be automatically taken, and the safety performance is high, so the fire occurring at the power switch 4 can be quickly extinguished.

[0056] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bus duct plug-in switch box with fire extinguishing capability, comprising a bus duct body (1), characterized in that: A plug-in switch box (2) is plugged into the top of the bus duct body (1), a power switch (4) is fixedly mounted on the side end surface inside the plug-in switch box (2), an input end of the power switch (4) is electrically connected to a plurality of wire posts (5), and a wire cutting assembly (6) is sleeved on the outer periphery of the plurality of wire posts (5), and the bottom of the wire cutting assembly (6) is fixedly connected to the bottom of the inner side of the plug-in switch box (2); A fire extinguisher (10) is arranged at the side of the power switch (4); a second passive trigger component (9) is fixedly connected to a side of the fire extinguisher (10) close to the power switch (4); a through hole is provided on a side end surface of the second passive trigger component (9); an active trigger component (8) is embedded in the through hole; a rear support seat (801) is fixedly connected to a side of the fire extinguisher (10) facing away from the power switch (4); and a bottom of the second passive trigger component (9) is fixedly connected to a top of the wire cutting component (6); The wire cutting assembly (6) comprises an outer frame (601), the outer frame (601) is sleeved around the outer periphery of a plurality of wire posts (5), the bottom of the outer frame (601) is fixedly connected to the bottom of the inner side of the plug-in switch box (2), the inner side wall of the outer frame (601) is provided with a sliding connection groove (602), a sliding connection seat (603) is slidably connected in the sliding connection groove (602), a side end surface of the sliding connection seat (603) is fixedly connected to a first support spring (604), the other end of the first support spring (604) is fixedly connected to the end surface of the inner side of the sliding connection groove (602), an insulating seat (606) is fixedly connected to the end surface of the sliding connection seat (603) at a position corresponding to the plurality of wire posts (5), a cutting knife (605) is fixedly connected to a side of the insulating seat (606) close to the plurality of wire posts (5), and the position of the insulating seat (606) corresponding to the cutting knife (605) is set as a slope structure; The side end surface of the insulating seat (606) is overlapped with a limit clamping seat (607); a side of the limit clamping seat (607) away from the plurality of conductor posts (5) is fixedly connected to a second support spring (609); the other end of the second support spring (609) is fixedly connected to the inner end surface of the outer frame (601); and the top of the limit clamping seat (607) is fixedly connected to a bridge-type connecting frame (608); The active trigger assembly (8) comprises a rear support seat (801), a first force storage rope (802) and a second force storage rope (803), one end of the first force storage rope (802) being fixedly connected to a side end surface of the power switch (4) via a hot-melt wire, the other end of the first force storage rope (802) being fixedly connected to a top of the trigger seat (705), one end of the second force storage rope (803) being fixedly connected to a side end surface of the power switch (4) via a hot-melt wire, and the other end of the second force storage rope (803) being fixedly connected to a surface close to the second telescopic inner shaft (906); The second passive trigger component (9) comprises a second adapter frame (901), the inner side wall of the second adapter frame (901) is clamped with a bearing, the first adapter shaft is rotatably connected inside the bearing, a telescopic outer cylinder (902) is embedded inside the second adapter frame (901), the telescopic outer cylinder (902) is fixedly connected to the opposite surface of the first adapter shaft, the end of the first adapter shaft is fixedly connected to the second torque coupling (903), the surface of the second torque coupling (903) is sleeved with a second force storage spring (904), one end of the second force storage spring (904) is fixedly connected to the surface of the second torque coupling (903), and the other end of the second force storage spring (904) is fixedly connected to a surface close to the second adapter frame (901); A first telescopic inner shaft (905) is sleeved in the port at the top of the telescopic outer cylinder (902), one end of the first telescopic inner shaft (905) is connected to the inner end surface of the telescopic outer cylinder (902) via an elastic member, the other end of the first telescopic inner shaft (905) is abutted against a switch on the fire extinguisher (10), a second telescopic inner shaft (906) is sleeved in the port at the bottom of the telescopic outer cylinder (902), the end of the second telescopic inner shaft (906) is connected to the inner end surface of the telescopic outer cylinder (902) via an elastic member, and the through hole is provided on the side end surface of the second telescopic inner shaft (906); One end of the second force storage rope (803) is fixedly connected to the side end surface of the power switch (4) via a hot melt line. When an open fire occurs, the hot melt line on the second force storage rope (803) will melt, and the elastic member associated with the first telescopic inner shaft (905) will stretch inside the telescopic outer cylinder (902) under the action of its own restoring elastic force, thereby turning on the switch on the fire extinguisher (10); The first passive trigger component (7) comprises a first adapter frame (704), the bottom of the first adapter frame (704) is fixedly connected to the top of the outer frame (601), an adapter-type linkage shaft (702) is embedded in the inner side of the first adapter frame (704), the end of the adapter-type linkage shaft (702) is fixedly connected to a second adapter shaft, the surface of the second adapter shaft is sleeved with a bearing, the bearing is clamped on the end surface of the inner side of the adapter frame, the end of the second adapter shaft is fixedly connected to a first torque coupling (703), the surface of the first torque coupling (703) is sleeved with a first force storage spring (701), one end of the first force storage spring (701) is fixedly connected to the surface of the first torque coupling (703), and the other end of the first force storage spring (701) is fixedly connected to a surface close to the first adapter frame (704); The top of the transfer-type linkage shaft (702) is fixedly connected to a trigger seat (705), and the side end surface of the transfer-type linkage shaft (702) is fixedly connected to an end close to the bridge-type connecting frame (608).

2. A bus duct plug-in switch box with fire extinguishing capability according to claim 1, characterized in that: The bottom of the rear support seat (801) is fixedly connected to the bottom of the inner side of the plug-in switch box (2); a switch box cover (3) is provided on the side of the rear support seat (801) away from the fire extinguisher (10); and the switch box cover (3) is fixedly connected to the opposite surface of the plug-in switch box (2).

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