A surge backup protection device and a limit device for a surge protection device

Abstract

The present invention discloses a surge backup protection device and a limit device for a surge protection device. The limit device for a surge protection device comprises a sliding bin; a sliding rod; a piston plate; a baffle; and a connecting rod. The sliding bin is hollow, the piston plate is horizontally slidably arranged inside the sliding bin, the piston plate can slide in the sliding bin in a vertical direction, the sliding rod is vertically fixedly arranged on the upper end surface of the piston plate, the sliding rod penetrates and is slidably connected to the upper inner wall of the sliding bin, the end of the sliding rod is fixedly connected to the connecting rod, and the end of the connecting rod is fixedly connected to the baffle, so as to protect the surge protection device.

Description

Technical Field

[0001] The invention relates to the technical field of lightning protection equipment, and in particular to a surge backup protection device and a limit device for the surge protection device. Background Art

[0002] At present, in order to prevent the intrusion of lightning current, the distribution system usually installs a surge protector between the transmission line and the electrical equipment. When used in signal equipment, the maximum discharge current is limited. If it cannot thermally trip at the maximum discharge current, the surge protector will not be able to withstand the lightning current and cause a power short circuit, resulting in a power supply accident; the conventional solution is to connect the varistor in series with the insurance, but when the capacity of the series insurance is small, it cannot withstand excessive voltage shock; when the capacity of the series insurance is large, the insurance requires a large current to melt or not break, which is also easy to cause a power short circuit, resulting in a power supply accident.

[0003] Chinese invention patent CN209029919U discloses a backup protection device for a surge protector, including a mounting plate, a fixing block is horizontally fixedly connected to the left position of the middle upper front side of the mounting plate, a mounting box is fixedly connected to the lower front side of the mounting plate, a groove is provided in the middle position of the bottom of the mounting box, and power supply contact copper ends are fixedly installed on both sides of the bottom of the inner cavity of the mounting box. The utility model is provided with a forward and reverse motor, a first threaded rod, a second threaded rod, two sets of threaded moving blocks, two push rods and a lifting support plate. When an overcurrent occurs in the surge protector, the surge protector can be driven to rise by the lifting support plate, thereby separating from the power supply contact copper end, stopping power supply, and protecting the surge protector. It is relatively practical and suitable for wide promotion and use.

[0004] However, in actual use, the protective device for separating the surge protector uses a motor to drive a lifting mechanism to drive the surge protector to separate, which adds an additional connection circuit, has a complex structure, has a slow response speed during actual use, and is not easy to operate.

[0005] Therefore, it is necessary to provide a surge backup protection device and a limit device for a surge protection device to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide a surge backup protection device and a limit device for a surge protection device to solve the existing problems in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A limit device for a surge protection device includes a sliding bin; a sliding rod; a piston plate; a baffle; and a connecting rod; the sliding bin is hollow, the piston plate is horizontally slidably arranged inside the sliding bin, the piston plate can slide in the sliding bin in a vertical direction, the sliding rod is vertically fixedly arranged on the upper end surface of the piston plate, the sliding rod penetrates and is slidably connected to the upper inner wall of the sliding bin, the end of the sliding rod is fixedly connected to the connecting rod, and the end of the connecting rod is fixedly connected to the baffle.

[0009] Preferably, it also includes a sealing chamber; a spring telescopic rod; the sealing chamber is arranged in the sliding chamber, the sealing chamber is sealed by the piston plate and the sliding chamber, and the spring telescopic rod is arranged inside the sealing chamber.

[0010] Preferably, the top of the spring telescopic rod is fixedly connected to the bottom of the piston plate, and the bottom of the spring telescopic rod is fixedly connected to the upper side of the inner wall of the bottom of the sliding chamber. When the sealed chamber is heated, the gas therein is heated, causing the gas pressure to increase, which lifts the piston plate and moves it upward, driving the sliding rod to slide upward, the spring telescopic rod is pulled up, and the baffle moves upward accordingly through the connecting rod.

[0011] A surge backup protection device comprises a base, a surge protector is installed inside the base, a protective shell is arranged on the outside of the surge protector, and also comprises the limiting device for the surge protection device according to claim 1, a first sleeve is arranged at the bottom of the protective shell, a second sleeve that cooperates with and conducts with the first sleeve is arranged on the inner surface of the bottom of the base, a locking mechanism is arranged between the first sleeve and the second sleeve, a driving mechanism is arranged on the outside of the locking mechanism, and the limiting device for the surge protection device is installed on the driving mechanism, when the temperature of the surge protector reaches a threshold value, the baffle moves up, the driving mechanism drives the first sleeve to rotate and forms an insulating state with the second sleeve to separate the surge protector from the circuit.

[0012] Preferably, a first conductive joint is provided at the bottom of the protective shell, a second conductive joint matching with the first conductive joint is provided on the inner surface of the bottom of the base, the first conductive joint is provided inside the first sleeve and in contact with the first sleeve, and the second conductive joint is provided inside the second sleeve and in contact with the second sleeve.

[0013] Preferably, a ring is provided at the top end of the outer side of the first sleeve, the ring is rotatably connected to the first sleeve and fixedly connected to the bottom of the base, a gear is fixedly connected to the outer side of the first sleeve, a rack is provided on the outer side of the gear, the rack is meshed with the gear, a support plate is fixedly connected to the bottom of the base, both ends of the rack pass through the support plate and are slidably connected to the support plate.

[0014] Preferably, the driving mechanism also includes a guide rail fixedly connected to the bottom of the protective shell, a slider is slidably connected inside the guide rail, a driving sprocket is arranged at the bottom end of the slider, a vertical rod is arranged at the bottom of the protective shell, the vertical rod passes through the driving sprocket and is fixedly connected to the driving sprocket, the top of the vertical rod is fixedly connected to the slider, the vertical rod passes through the base and extends to the outside of the base, and the chain is arranged on the outside of the driving sprocket and the driven sprocket.

[0015] Preferably, one side of the slider is fixedly connected to a first slide bar, and one side surface of the guide rail is provided with a through hole for the first slide bar to pass through, the diameter of the through hole is larger than the outer diameter of the first slide bar, and a sliding warehouse of the limiting device for the surge protection device is fixedly connected to the outer side surface of the first slide bar, and one side of the guide rail is provided with a heat conducting plate, and the heat conducting plate is fixedly connected to the guide rail by welding, and the sliding warehouse is in contact with the heat conducting plate, and the baffle is in the lowest state when the baffle is in the lowest state, It abuts the end of the first slide bar, the limiting device for the surge protection device is organically linked with the surge protection device, and when the heat conducting plate and the sealing chamber are heated, the gas therein is heated, resulting in an increase in air pressure, which lifts the piston plate and moves upward, drives the slide bar to slide upward, and the spring telescopic rod is pulled up, and the baffle moves upward through the connecting rod, and the baffle cancels the resistance force on the first slide bar, and the first slide bar slides into the through hole to further perform surge protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the locking mechanism structure of the present invention;

[0019] Figure 3 is a plan view of the locking mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the driving mechanism structure of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the arc baffle of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the slide groove and the limit groove of the present invention;

[0023] Figure 7 It is a schematic diagram of the connection structure between the arc-shaped baffle and the second sleeve of the present invention;

[0024] Figure 8 It is a schematic diagram of the chain structure of the present invention;

[0025] Fig. 9 The present invention Figure 2A magnified view of the structure of part A;

[0026] Fig.10 The present invention Figure 7 A magnified view of the structure of part B;

[0027] Fig.11 It is a schematic diagram of the main structure of the limit device for the surge protection device of the present invention;

[0028] Fig.12 is a side view of a limit device for a surge protection device of the present invention;

[0029] Fig.13 It is a front view of the limit device for the surge protection device of the present invention;

[0030] Fig.14 It is a schematic diagram of the limit device for the surge protection device of the present invention when heated.

[0031] In the figure: 1, base; 2, protective shell; 3, positioning groove; 4, positioning block; 5, first sleeve; 6, second sleeve; 7, pillar; 8, supporting ball; 9, arc baffle; 10, groove; 11, convex strip; 12, limit groove; 13, round hole; 14, slide; 15, insulating pad; 16, chain; 17, collar; 18, gear; 19, rack; 20, support plate; 21, guide rail; 22, slider; 23. Driving sprocket; 24. Vertical rod; 25. Nut; 26. First slide bar; 27. Limiting plate; 28. Heat conducting plate; 29. ​​Second slide bar; 30. Spring; 31. Pull rope; 32. Steering wheel; 33. Limiting device for surge protection device; 331. Sliding chamber; 332. Sliding rod; 333. Piston plate; 334. Spring telescopic rod; 335. Sealing chamber; 336. Baffle; 337. Connecting rod. DETAILED DESCRIPTION

[0032] Example 1

[0033] like Figure 1 , 3 As shown, a surge backup protection device includes a base 1, a surge protector is installed inside the base 1, a protective shell 2 is arranged outside the surge protector, positioning grooves 3 are arranged on the front and rear sides of the protective shell 2, and a positioning block 4 used in conjunction with the positioning groove 3 is fixedly arranged on the inner wall of the base 1, so that when the surge protector is installed inside the base 1, the positioning block 4 cooperates with the positioning groove 3 to position the protective shell 2 inside the base 1.

[0034] like Figure 1-3As shown, a first conductive joint is provided at the bottom of the protective shell 2, and a second conductive joint matching with the first conductive joint is provided on the inner surface of the bottom of the base 1, a first sleeve 5 is provided on the outer side of the first conductive joint, and a second sleeve 6 is provided on the outer side of the second conductive joint, the first conductive joint is in contact with the first sleeve 5, and the second conductive joint is in contact with the second sleeve 6, and the circuit is conducted through the contact between the first conductive joint and the second conductive joint, a locking mechanism is provided between the first sleeve 5 and the second sleeve 6, and a driving mechanism is provided on the outer side of the locking mechanism to drive the locking mechanism to lock the first sleeve 5 and the second sleeve 6.

[0035] like Figure 2-8 As shown in 10, the locking mechanism includes a pillar 7 which is arranged on the bottom surface of the first sleeve 5 and fixedly connected to the first sleeve 5, a supporting ball 8 is arranged at the bottom end of the pillar 7, the supporting ball 8 is in contact with the top surface of the second sleeve 6, the supporting ball 8 is rotatably connected to the pillar 7, an arc-shaped baffle 9 is arranged on the top surface of the second sleeve 6 and fixedly connected to the second sleeve 6, a groove 10 is arranged on the inner wall of the arc-shaped baffle 9, a convex strip 11 matching the groove 10 is fixedly arranged on the outer surface of the pillar 7, the convex strip 11 is made of stainless steel material, a limiting groove 12 is arranged on the top surface of the second sleeve 6, the inner diameter of the limiting groove 12 is larger than the outer diameter of the pillar 7, a circular hole 13 is arranged on the inner bottom surface of the limiting groove 12, the circular hole 13 is used in conjunction with the supporting ball 8, a slide groove 14 is arranged between the arc-shaped baffle 9 and the limiting groove 12, the slide groove 14 is connected with the limiting groove 12, and an insulating pad 15 is arranged at the circular hole 13.

[0036] A driven sprocket is arranged on the outer side of the pillar 7, and a chain 16 is meshed on the outer side of the driven sprocket. The driven sprocket is driven to rotate by the chain 16, and then the pillar 7 is driven to rotate by the driven sprocket. During the rotation of the pillar 7, the convex strip 11 on the outer side can rotate together with it. The pillar 7 can be connected to the arc baffle 9 by the groove 10 of the convex strip 11. In actual operation, the surge protector and the protective shell 2 on the outer side are placed together inside the base 1, and the positioning block 4 is matched with the positioning groove 3. At this time, the support ball 8 at the bottom of the pillar 7 is in contact with the top surface of the second sleeve 6, and the pillar 7 is fitted with the arc baffle 9. At this time, the driven sprocket is driven by the chain 16 Reverse, rotate the convex strip 11 on the outer side of the pillar 7 to the inner side of the arc-shaped baffle 9 so that it contacts the inner side of the arc-shaped baffle 9. The convex strip 11 is squeezed and deformed to be placed between the pillar 7 and the arc-shaped baffle 9. At this time, the driven sprocket is driven by the chain 16 to rotate forward, and the driven sprocket can drive the pillar 7 and the convex strip 11 on the outer side thereof to rotate forward. When the convex strip 11 rotates forward, it can match the groove 10 on the inner side of the arc-shaped baffle 9, so that the convex strip 11 is stuck in the groove 10, so that the pillar 7 is engaged with the arc-shaped baffle 9, and then the first sleeve 5 is fastened to the second sleeve 6. Through this structure, the surge protector can be connected and installed quickly and conveniently, and the operation is convenient.

[0037] A ring 17 is provided at the top end of the outer side of the first sleeve 5, the ring 17 is rotatably connected to the first sleeve 5 and fixedly connected to the bottom of the base 1, a gear 18 is fixedly connected to the outer side of the first sleeve 5, a rack 19 is provided on the outer side of the gear 18, the rack 19 meshes with the gear 18, a support plate 20 is fixedly connected to the bottom of the base 1, both ends of the rack 19 penetrate the support plate 20 and are slidably connected to the support plate 20.

[0038] During use, when the current in the circuit is large and the heat reached is high and the surge protector needs to be disengaged, the gear 18 is driven to rotate inwardly through the rack 19, and the gear 18 can drive the first sleeve 5 to rotate inwardly, and when the rack 19 moves, the chain 16 can be loosened. Therefore, the rotation of the first sleeve 5 can drive the support 7 at the bottom to rotate, and the support 7 slides along the slide groove 14 on the top surface of the second sleeve 6 to the inside of the limiting groove 12, thereby prompting the supporting ball 8 at the bottom of the support 7 to match the circular hole 13 on the bottom surface of the limiting groove 12, and an insulating pad 15 is provided at the circular hole 13. When the supporting ball 8 falls into the circular hole 13, the supporting ball 8 and the second sleeve 6 are insulated and not conductive, and the support ball 8 is electrically conductive to the second sleeve 6. The inner diameter of the limit groove 12 is larger than the outer diameter of the support 7. Therefore, when the support 7 falls into the limit groove 12, the support 7 and the second sleeve 6 are not in contact and are in a non-conductive state. In the initial state, the support ball 8 is placed on the top of the second sleeve 6 so that the first sleeve 5 and the second sleeve 6 are in a conductive state. When the first sleeve 5 rotates to drive the support 7 and the support ball 8 at the bottom thereof to fall into the limit groove 12, the first sleeve 5 and the second sleeve 6 are in an insulating support 7, so that the surge protector is in a disengaged state, thereby protecting the surge protector. Through this device, the driving power is generated by the heat generated by the surge protector itself. The structure is simple in actual operation, and no additional circuit needs to be connected. The operation is convenient and the sensitivity is high.

[0039] like Figures 2 to 9As shown, the driving mechanism includes a guide rail 21 fixedly connected to the bottom of the protective shell 2, a slider 22 is slidably connected inside the guide rail 21, a driving sprocket 23 is arranged at the bottom of the slider 22, a vertical rod 24 is arranged at the bottom of the protective shell 2, the vertical rod 24 passes through the driving sprocket 23 and is fixedly connected to the driving sprocket 23, the top of the vertical rod 24 is fixedly connected to the slider 22, the vertical rod 24 passes through the base 1 and extends to the outside of the base 1, a countersunk hole is arranged at the bottom of the base 1 at the vertical rod 24, a nut 25 is arranged inside the countersunk hole, the vertical rod 24 is fixedly connected to the base 1 through the nut 25, a first slide bar 26 is fixedly connected to one side of the slide bar 22, a through hole is arranged on one side surface of the guide rail 21 for the first slide bar 26 to pass through, the diameter of the through hole is larger than the outer diameter of the first slide bar 26, and a nut 25 that is easy to melt is fixedly connected to the outer surface of the first slide bar 26 A limiting plate 27 is provided on one side of the guide rail 21, and the heat conducting plate 28 is fixedly connected to the guide rail 21 by welding. The limiting plate 27 contacts the heat conducting plate 28, and a second sliding rod 29 is fixedly connected to the other side of the slider 22. The second sliding rod 29 passes through the guide rail 21 and is slidably connected to the guide rail 21. A spring 30 is provided on the outer side of the second sliding rod 29, and the spring 30 is arranged between the slider 22 and the guide rail 21. A pull rope 31 is fixedly connected between the second sliding rod 29 and the rack 19. A steering wheel 32 is provided at the bottom of the protective shell 2 at the corner of the pull rope 31, and the pull rope 31 is arranged on the outer side of the steering wheel 32. A fixing rod is provided at the bottom of the steering wheel 32, and one end of the fixing rod close to the steering wheel 32 is rotatably connected to the writing wheel, and the end of the fixing rod away from the steering wheel 32 is fixedly connected to the protective shell 2.

[0040] When in use, when the current of the surge protector is large, the heat generated by the surge protector is large, so that the heat conducting plate 28 can be heated to increase its temperature, and the limit plate 27 can be heated through the heat conducting plate 28, so that the limit plate 27 is melted. At this time, the slider 22 can be pushed to the left under the elastic force of the spring 30. When the slider 22 moves to the left, the chain 16 can be loosened, and when the slider 22 drives the second slide bar 29 to move to the left, the pull rope 31 can be pulled. The pull rope 31 can pull the rack 19 through the steering wheel 32, thereby driving the rack 19 to move to the right. The gear 18 can be driven to rotate through the meshing of the rack 19 and the gear 18, and then the first sleeve 5 can be driven to rotate, prompting the support 7 to rotate to the inside of the limit groove 12.

[0041] Example 2

[0042] A limit device for a surge protection device includes a sliding compartment 331; a sliding rod 332; and a piston plate 333;

[0043] A baffle 336; a connecting rod 337; the sliding chamber 331 is hollow, the piston plate 333 is horizontally slidably arranged inside the sliding chamber 331, the piston plate 333 can slide in the sliding chamber 331 in the vertical direction, the sliding rod 332 is vertically fixedly arranged on the upper end surface of the piston plate 333, the sliding rod 332 passes through and is slidably connected to the upper inner wall of the sliding chamber 331, the end of the sliding rod 332 is fixedly connected to the connecting rod 337, and the end of the connecting rod 337 is fixedly connected to the baffle 336.

[0044] Specifically, it also includes a sealed chamber 335 and a spring telescopic rod 334 . The sealed chamber 335 is arranged in the sliding chamber 331 . The sealed chamber 335 is sealed by the piston plate 333 and the sliding chamber 331 . The spring telescopic rod 334 is arranged inside the sealed chamber 335 .

[0045] Specifically, the top of the spring telescopic rod 334 is fixedly connected to the bottom of the piston plate 333, and the bottom of the spring telescopic rod 334 is fixedly connected to the upper side of the bottom inner wall of the sliding chamber 331. When the sealed chamber is heated, the gas therein is heated, causing the gas pressure to increase, which lifts the piston plate upward, drives the sliding rod to slide upward, pulls up the spring telescopic rod, and the baffle moves upward through the connecting rod.

[0046] A surge backup protection device comprises a base, a surge protector is installed inside the base, a protective shell is arranged on the outside of the surge protector, and also comprises the limiting device 33 for the surge protection device according to claim 1, a first sleeve is arranged on the bottom of the protective shell, a second sleeve is arranged on the inner surface of the bottom of the base and is connected with the first sleeve, a locking mechanism is arranged between the first sleeve and the second sleeve, a driving mechanism is arranged on the outside of the locking mechanism, and the limiting device 33 for the surge protection device is installed on the driving mechanism, when the temperature of the surge protector reaches a threshold value, the baffle 336 moves up, and the driving mechanism drives the first sleeve to rotate and forms an insulating state with the second sleeve to separate the surge protector from the circuit.

[0047] Specifically, a first conductive joint is provided at the bottom of the protective shell, and a second conductive joint matching with the first conductive joint is provided on the inner surface of the bottom of the base, the first conductive joint is provided inside the first sleeve and in contact with the first sleeve, and the second conductive joint is provided inside the second sleeve and in contact with the second sleeve.

[0048] Specifically, a ring is provided at the top end of the outer side of the first sleeve, the ring is rotatably connected to the first sleeve and fixedly connected to the bottom of the base, a gear is fixedly connected to the outer side of the first sleeve, a rack is provided on the outer side of the gear, the rack is meshed with the gear, a support plate is fixedly connected to the bottom of the base, both ends of the rack penetrate the support plate and are slidably connected to the support plate.

[0049] Specifically, the driving mechanism also includes a guide rail fixedly connected to the bottom of the protective shell, a slider is slidably connected inside the guide rail, a driving sprocket is arranged at the bottom end of the slider, a vertical rod is arranged at the bottom of the protective shell, the vertical rod passes through the driving sprocket and is fixedly connected to the driving sprocket, the top of the vertical rod is fixedly connected to the slider, the vertical rod passes through the base and extends to the outside of the base, and the chain is arranged on the outside of the driving sprocket and the driven sprocket.

[0050] Specifically, a first slide bar is fixedly connected to one side of the slider, and a through hole is provided on one side surface of the guide rail for the first slide bar to pass through, and the diameter of the through hole is larger than the outer diameter of the first slide bar. A sliding bin 331 of the limiting device 33 for the surge protection device is fixedly connected to the outer side surface of the first slide bar, and a heat conducting plate is provided on one side of the guide rail, and the heat conducting plate is fixedly connected to the guide rail by welding. The sliding bin 331 is in contact with the heat conducting plate, and the baffle 336 is in the lowest state, which abuts against the end of the first slide bar 21. The limiting device for the surge protection device is organically linked to the surge protection device. When the heat conducting plate is heated and the sealing bin is heated, the gas therein is heated, resulting in an increase in air pressure, which lifts the piston plate upward and drives the slide bar upward. Slide, the spring telescopic rod is pulled up, and the baffle moves up accordingly through the connecting rod, the baffle cancels the resistance force on the first sliding rod, and the first sliding rod slides into the through hole to further perform surge protection. Compared with the limit plate of Example 1, the limit device for the surge protection device can be recycled, so as to avoid the melting of the limit plate, which makes the surge protection device difficult to clean, and the disposable material will cause waste of resources and cost. The recycling of the limit device for the surge protection device can save costs. Compared with the limit plate, the limit device for the surge protection device can provide more stable resistance, because the limit plate is made of a heat-meltable material and is easily damaged after being subjected to force for a long time, resulting in instability in the use of the surge protection device, so the limit device for the surge protection device is safer and more stable.

[0051] Working principle: When the current of the surge protector is large, the heat generated by the surge protector is large, so that the heat conducting plate 28 can be heated to increase its temperature, and the limit plate 27 can be heated by the heat conducting plate 28, so that the limit plate 27 melts. At this time, the slider 22 can be pushed to the left under the elastic force of the spring 30. When the slider 22 moves to the left, the chain 16 can be loosened, and when the slider 22 drives the second slide bar 29 to move to the left, the pull rope 31 can be pulled, and the pull rope 31 can pull the rack 1 through the steering wheel 32. 9, thereby driving the rack 19 to move to the right, and the gear 18 can be driven to rotate by the meshing of the rack 19 and the gear 18, and the gear 18 can drive the first sleeve 5 to rotate inward, and when the rack 19 moves, the chain 16 can be loosened. Therefore, the rotation of the first sleeve 5 can drive the support 7 at the bottom thereof to rotate, and the support 7 slides along the slide groove 14 on the top surface of the second sleeve 6 to the inside of the limiting groove 12, thereby causing the support ball 8 at the bottom of the support 7 to match the circular hole 13 on the bottom surface of the limiting groove 12, and the circular hole 1 Insulating pads 15 are provided at 3. When the supporting ball 8 falls to the circular hole 13, the supporting ball 8 and the second sleeve 6 are insulated and non-conductive. Since the inner diameter of the limiting groove 12 is larger than the outer diameter of the support 7, when the support 7 falls into the limiting groove 12, the support 7 and the second sleeve 6 are not in contact and are also in a non-conductive state. In the initial state, the supporting ball 8 is placed on the top of the second sleeve 6 so that the first sleeve 5 and the second sleeve 6 are in a conductive state. When the first sleeve 5 rotates, the support 7 and the supporting ball 8 at the bottom thereof are driven to fall into the limiting groove 12. When the first sleeve 5 and the second sleeve 6 are in the insulating support 7, the surge protector is in a disengaged state, thereby protecting the surge protector. The surge protector is organically linked with the limit device. When the heat conducting plate is heated and the sealing chamber is heated, the gas therein is heated, resulting in an increase in gas pressure, which lifts the piston plate and moves it upward, drives the slide rod to slide upward, pulls up the spring telescopic rod, and moves the baffle upward through the connecting rod. The baffle cancels the resistance force on the first slide rod, and the first slide rod slides into the through hole to further protect the surge.

Claims

1. A surge backup protection device, comprising a base, a surge protector is installed inside the base, and a protective shell is arranged outside the surge protector. Features: Limiting device for surge protection device It comprises a sliding bin, a sliding rod, a piston plate, a baffle plate, and a connecting rod; the sliding bin is hollow, the piston plate is horizontally slidably arranged inside the sliding bin, the piston plate can slide in the sliding bin in the vertical direction, the sliding rod is vertically fixedly arranged on the upper end surface of the piston plate, the sliding rod penetrates and is slidably connected to the upper inner wall of the sliding bin, the end of the sliding rod is fixedly connected to the connecting rod, and the end of the connecting rod is fixedly connected to the baffle plate; A first sleeve is provided at the bottom of the protective shell, a second sleeve is provided on the inner surface of the bottom of the base to cooperate with the first sleeve, a locking mechanism is provided between the first sleeve and the second sleeve, a driving mechanism is provided on the outer side of the locking mechanism, a limiting device for the surge protector is installed on the driving mechanism, when the temperature of the surge protector reaches a threshold value, the baffle moves up, the driving mechanism drives the first sleeve to rotate and forms an insulating state with the second sleeve to separate the surge protector from the circuit.

2. A surge backup protection device according to claim 1, Features: The limit device for the surge protection device also includes a sealing chamber; Spring-loaded telescopic rod; The sealing chamber is arranged in the sliding chamber, the sealing chamber is sealed by the piston plate and the sliding chamber, and the spring telescopic rod is arranged inside the sealing chamber.

3. A limit device for a surge protection device according to claim 2, Features: The top of the spring telescopic rod is fixedly connected to the bottom of the piston plate, and the bottom of the spring telescopic rod is fixedly connected to the upper side of the inner wall of the bottom of the sliding bin.

4. A surge backup protection device according to claim 3, Features: A first conductive joint is provided at the bottom of the protective shell, and a second conductive joint matching with the first conductive joint is provided on the inner surface of the bottom of the base. The first conductive joint is provided inside the first sleeve and in contact with the first sleeve, and the second conductive joint is provided inside the second sleeve and in contact with the second sleeve.

5. A surge backup protection device according to claim 4, Features: A ring is provided at the top end of the outer side of the first sleeve, the ring is rotatably connected to the first sleeve and fixedly connected to the bottom of the base, a gear is fixedly connected to the outer side of the first sleeve, a rack is provided on the outer side of the gear, the rack is meshed with the gear, a support plate is fixedly connected to the bottom of the base, both ends of the rack penetrate the support plate and are slidably connected to the support plate.

6. A surge backup protection device according to claim 5, Features: The driving mechanism also includes a guide rail fixedly connected to the bottom of the protective shell, a slider is slidably connected inside the guide rail, a driving sprocket is arranged at the bottom of the slider, a vertical rod is arranged at the bottom of the protective shell, the vertical rod passes through the driving sprocket and is fixedly connected to the driving sprocket, the top of the vertical rod is fixedly connected to the slider, the vertical rod passes through the base and extends to the outside of the base, and the chain is arranged on the outside of the driving sprocket and the driven sprocket.

7. A surge backup protection device according to claim 6, Features: A first slide bar is fixedly connected to one side of the slider, a through hole is provided on one side surface of the guide rail for the first slide bar to pass through, the diameter of the through hole is larger than the outer diameter of the first slide bar, a sliding bin of the limiting device for the surge protection device is fixedly connected to the outer side surface of the first slide bar, a heat conducting plate is provided on one side of the guide rail, the heat conducting plate is fixedly connected to the guide rail by welding, the sliding bin is in contact with the heat conducting plate, and the baffle plate is against the end of the first slide bar when it is in the lowest state.

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