An adjustable lightning arrester

Abstract

The present invention discloses an adjustable lightning arrester, which relates to the field of lightning arrester installation technology, including an arrester body, an installation assembly and a channel steel for fixing the arrester body, wherein a triangular grounding terminal is provided at the bottom of the arrester body, and insulating columns are provided at each vertex of the grounding terminal, and the installation assembly includes a mounting plate, a driving mechanism and a plurality of fixings; the plurality of fixings penetrate the mounting plate, the insulating columns and the grounding terminal, and the fixings include a screw, a bolt cap fixed at the end of the screw, and a nut matched with the screw thread; a mounting hole adapted to the fixing is provided on the channel steel, and the inner diameter of the mounting hole is larger than the diameter of the circumscribed circle of the bolt cap, and an external expansion mechanism for expanding the effective area of ​​the bolt cap is provided on the bolt cap. When the present invention is installed, it is not necessary to remove the fixing from the mounting plate, which reduces the risk of component loss during the installation process, improves the installation efficiency, is conducive to reducing the difficulty of operation, and ensures the safety during the installation process.

Description

Technical Field

[0001] The invention relates to the technical field of lightning arrester installation, and in particular to an adjustable lightning arrester. Background Art

[0002] Overhead lines are wire lines that are laid horizontally on towers. When there is thunderstorm weather, the wires are struck by lightning, which will generate a large current and cause the wires to be damaged. At this time, a lightning arrester is needed for protection. The existing lightning protection device for overhead lines is a lightning arrester installed above the channel steel on the top of the tower. The bottom is connected to the ground wire, and the top wire passes through it. The current generated by the electric shock can be introduced into the ground through the lightning arrester and the ground wire for consumption, preventing the line from being damaged.

[0003] There are many ways to install lightning arresters, and the most commonly used method is to use a screw and a nut to fix them. Although the lightning arrester can be stably fixed on the channel steel, during installation, in order to facilitate the tightening of the nut, the screw is generally passed through the bottom of the mounting hole so that the nut is installed on the top. Therefore, during the installation process, not only is it necessary to stabilize the lightning arrester and align the mounting hole position, but before the screw and nut are connected, it is also necessary to continuously support the screw to prevent it from falling. Usually, multiple people are required to cooperate, and the operation is inconvenient, especially when installing lightning arresters on overhead lines, the workers are working at high altitudes, the operation is difficult, and there are great safety hazards. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that bolt-fixed lightning arresters in the prior art are inconvenient to operate and present great potential safety hazards during high-altitude operations, and to propose an adjustable lightning arrester.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An adjustable lightning arrester comprises an arrester body, a mounting assembly and a channel steel for fixing the arrester body, wherein a triangular grounding terminal is arranged at the bottom of the arrester body, and insulating columns are arranged at each vertex of the grounding terminal, and the mounting assembly comprises:

[0007] The mounting plate is located below the grounding terminal and is electrically insulated from the grounding terminal by an insulating column;

[0008] A plurality of fixing members, which penetrate the mounting plate, the insulating column and the grounding terminal, include a screw rod, a bolt cap fixed to the end of the screw rod and a nut matched with the screw thread, wherein the mounting plate and the grounding terminal are located between the bolt cap and the nut;

[0009] The channel steel is provided with a mounting hole adapted to the fixing piece, the inner diameter of the mounting hole is larger than the diameter of the circumscribed circle of the bolt cap, and the bolt cap is provided with an outward expansion mechanism for expanding the effective area of ​​the bolt cap;

[0010] The driving mechanism is used to drive the plurality of fixing members to be fastened synchronously.

[0011] Preferably, the outward expansion mechanism includes a plurality of sliders, a plurality of mounting slots are provided on the outer peripheral surface of the bolt cap, the sliders are adapted to the mounting slots, a guide block is provided in the mounting slots, an inclined guide groove is provided on the slider, the guide block passes through the guide groove and is slidably connected to the guide groove, and a compression spring is provided between the slider and the mounting slot.

[0012] Preferably, the guide groove is away from one end of the bolt cap and approaches the bolt cap axis. When the compression spring is stretched to the maximum, the slider is located within the vertical projection range of the installation slot. When the compression spring is compressed to the limit position, the slider exceeds the vertical projection range of the installation slot.

[0013] Preferably, a positioning block is provided on the top of the sliding block, the height of the positioning block is consistent with the depth of the mounting hole, and the positioning block is an arc-shaped block bent outward.

[0014] Preferably, a plurality of limiting grooves are provided on the outer peripheral surface of the screw rod along the axial direction, and a limiting block matched with the limiting grooves is provided on the inner wall of the through hole of the mounting plate.

[0015] Preferably, the driving mechanism includes a transmission gear ring rotatably mounted outside the arrester body, the nut is in a circular shape, and teeth meshing with the transmission gear ring are arranged on the outer peripheral surface of the nut, a vertical pole is fixedly mounted on the side of the mounting plate, a driving gear ring meshing with the transmission gear ring is rotatably arranged on the vertical pole, and the driving gear ring rotatably sleeved is provided with a driving ring for controlling the continuous unidirectional rotation of the driving gear ring.

[0016] Preferably, the driving gear ring is provided with an annular groove, the driving ring is rotatably arranged in the annular groove, a movable cavity is provided in the driving ring, a movable plate which can slide longitudinally is arranged in the movable cavity, plug rods are fixedly arranged on the top and bottom surfaces of the movable plate, a plurality of insertion holes corresponding to the plug rods are arranged on both side walls of the annular groove, a control structure for controlling the insertion state of the plug rod and the insertion hole is arranged on the side surface of the movable plate, the end of the plug rod has an oblique mouth, and the oblique mouths on the plug rods on the top and bottom surfaces of the movable plate are in opposite directions.

[0017] Preferably, the control structure includes a sleeve rotatably arranged on the outer wall of the driving ring, a pressure groove is opened on the side wall of the movable plate, a pressure rod is fixedly arranged at one end of the sleeve close to the pressure groove, a pressure ball is fixedly arranged at the end of the pressure rod, and the pressure rod extends into the pressure groove so that the pressure ball abuts against the inner wall of the pressure groove.

[0018] Preferably, a magnetic column corresponding to the movable cavity is slidably provided on the side of the vertical pole, a tension spring is provided between the magnetic column and the vertical pole, a plurality of locking holes adapted to the magnetic column are preset on the inner wall of the driving gear ring, and a magnet with an opposite magnetic pole to that of the magnetic column is provided near one end of the movable plate.

[0019] Preferably, discs are provided on both end surfaces of the nut, and the driving gear ring is located between the two discs.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1. The present invention provides an outward expansion mechanism so that the slider can be extended and retracted in the installation slot. During installation, under the action of the compression spring, the slider is located within the axial projection range of the bolt cap. The cross-section of the installation hole is larger than the cross-section of the bolt cap. The bolt cap can be directly inserted into the corresponding installation hole to achieve initial positioning of the arrester. When installing the arrester body, there is no need to remove the fixings from the mounting plate, which reduces the risk of component loss during the installation process, improves installation efficiency, and helps to reduce operational difficulty and ensure safety during the installation process.

[0022] 2. By setting up a driving mechanism, multiple fixings can be synchronously controlled for tightening, which can save time and improve work efficiency. Through synchronous control, it can ensure that multiple fixings are tightened to the same torque and position to ensure consistency.

[0023] 3. The present invention can control the unidirectional rotation of the driving gear ring by setting a driving ring, realize the locking and loosening of the nut, and realize the tightening of the fixing part by reciprocating pulling. The operation is simpler and the required operating space is smaller, which is beneficial to improving the safety of high-altitude operations. In a natural state, the magnetic column is adsorbed by a magnet and inserted into the locking hole, so that the driving gear ring and the vertical rod maintain a circumferential locking state, thereby ensuring the stability of the nut and reducing the risk of the nut loosening naturally. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an adjustable lightning arrester proposed by the present invention;

[0025] Figure 2 A partial cross-sectional structural schematic diagram of an adjustable lightning arrester proposed by the present invention;

[0026] Figure 3 A schematic diagram of the structure of a fixing member in an adjustable lightning arrester proposed by the present invention;

[0027] Figure 4 A schematic diagram of the structure of a screw rod, a bolt cap and a nut in an adjustable lightning arrester proposed by the present invention;

[0028] Figure 5A schematic diagram of the structure of a slider in a retracted state in an adjustable lightning arrester proposed by the present invention;

[0029] Figure 6 A schematic diagram of the structure of a slider in an adjustable lightning arrester proposed by the present invention in an outwardly expanded state;

[0030] Figure 7 A schematic diagram of the structure of a slider in an adjustable lightning arrester proposed by the present invention;

[0031] Figure 8 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0032] Fig. 9 A schematic diagram of the structure of a driving gear ring in an adjustable lightning arrester proposed by the present invention;

[0033] Fig.10 A schematic diagram of the structure of a driving ring in an adjustable lightning arrester proposed by the present invention;

[0034] Fig.11 A schematic diagram of the structure of a sleeve in an adjustable lightning arrester proposed by the present invention;

[0035] Fig.12 The present invention provides a schematic structural diagram of a movable plate in an adjustable lightning arrester.

[0036] In the figure: 1, lightning arrester body; 11, grounding terminal; 12, insulating column; 2, mounting assembly; 21, mounting plate; 211, limit block; 22, fixing piece; 221, screw rod; 2211, limit groove; 222, bolt cap; 2221, slider; 2222, guide block; 2223, guide groove; 2224, compression spring; 2225, positioning block; 223, nut; 2231, teeth; 2232, disc; 23. Driving mechanism; 231. Transmission gear ring; 232. Vertical pole; 2321. Magnetic column; 233. Driving gear ring; 2331. Insertion hole; 2332. Locking hole; 234. Driving ring; 2341. Movable cavity; 2342. Movable plate; 2343. Sleeve; 2344. Pressure groove; 2345. Pressure rod; 2346. Pressure ball; 2347. Insertion rod; 2348. Magnet; 3. Channel steel; 31. Mounting hole. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] Reference Figure 1-3 An adjustable lightning arrester includes a lightning arrester body 1, a mounting assembly 2 and a channel steel 3 for fixing the lightning arrester body 1. The channel steel 3 is fixed on the power line tower, usually horizontally welded. The lightning arrester body 1 is fixed on the channel steel 3 through the mounting assembly 2 and is connected in parallel with the line. A triangular grounding terminal 11 is provided at the bottom of the lightning arrester body 1. The line is connected to the wiring terminal at the top of the lightning arrester body 1 and is connected to the grounding wire through the grounding terminal 11. When an overvoltage occurs in the line, the current breaks through the lightning arrester body 1 and releases the overvoltage into the ground, thereby protecting the line.

[0040] The mounting assembly 2 includes a mounting plate 21, a driving mechanism 23 and a plurality of fixing members 22. The driving mechanism 23 can synchronously control the plurality of fixing members 22 to lock the mounting plate 21 and the channel steel 3, thereby fixing the arrester body 1.

[0041] The mounting plate 21 is located below the grounding terminal 11, and insulating columns 12 are provided at each vertex of the grounding terminal 11. The mounting plate 21 and the grounding terminal 11 are electrically insulated by the insulating columns 12, thereby ensuring the stability of the current path of the grounding circuit, reducing the short circuit between the grounding terminal 11 and the mounting plate 21, affecting the release of overvoltage, and improving the safety of the circuit.

[0042] A plurality of fixing members 22 penetrate the mounting plate 21, the insulating column 12 and the grounding terminal 11. The fixing members 22 can slide axially in the mounting plate 21 and the insulating column 12. The fixing members 22 include a screw 221, a bolt cap 222 fixed at the end of the screw 221 and a nut 223 threadably matched with the screw 221. The mounting plate 21 and the grounding terminal 11 are located between the bolt cap 222 and the nut 223. By rotating the nut 223, under the action of the thread, the nut 223 and the screw 221 are driven to move relative to each other, so that the distance between the nut 223 and the bolt cap 222 is shortened. The installation and fixation are achieved by changing the spacing between the nut 223 and the bolt cap 222.

[0043] Reference Figure 1-7The channel steel 3 is provided with a mounting hole 31 adapted to the fixing piece 22, and the inner diameter of the mounting hole 31 is larger than the diameter of the circumscribed circle of the bolt cap 222. The bolt cap 222 is provided with an external expansion mechanism to expand the effective area of ​​the bolt cap 222. During installation, the fixing piece 22 is axially aligned with the mounting hole 31, so that the bolt cap 222 passes through the mounting hole 31. The external expansion mechanism is used to increase the effective area of ​​the bolt cap 222. Therefore, when the bolt cap 222 is tightened toward one side of the mounting hole 31, it cannot pass through the mounting hole 31 again. The bolt cap 222 will be pressed against the bottom surface of the channel steel 3 to achieve fixation. When the bolt cap 222 and the nut 223 are pressed against the channel steel 3 and the insulating column 12 respectively, at this time, the mounting plate 21 and the channel steel 3 remain pressed against each other, so that the lightning arrester body 1 is stably installed.

[0044] Reference Figure 1-7 The outward expansion mechanism includes multiple sliders 2221, and the outer circumferential surface of the bolt cap 222 is provided with multiple installation slots. The sliders 2221 are adapted to the installation slots. The multiple installation slots are distributed in a circular array to ensure that each slider 2221 is subjected to uniform force. A guide block 2222 is provided in the installation slot. An inclined guide groove 2223 is provided on the slider 2221. The guide block 2222 penetrates the guide groove 2223 and is slidably connected with the guide groove 2223. A compression spring 2224 is provided between the slider 2221 and the installation slot. The compression spring 2224 is in a compressed state and tends to push the slider 2221 outward. When the slider 2221 moves in the installation slot, it is limited by the guide block 2222 and moves linearly along the length direction of the guide groove 2223. Since the guide groove 2223 is inclined, the moving path of the slider 2221 is the same inclined path as the guide groove 2223.

[0045] Reference Figure 1-7 The guide groove 2223 is away from the end of the bolt cap 222 and approaches the axis of the bolt cap 222. When the compression spring 2224 is stretched to the maximum, the slider 2221 is located within the vertical projection range of the installation notch (such as Figure 5 As shown), when the compression spring 2224 is compressed to the limit position, the slider 2221 exceeds the vertical projection range of the installation slot (as shown in FIG. Figure 3 and Figure 6 As shown in the figure, when the distance between the bolt cap 222 and the nut 223 is large, the bolt cap 222 does not contact the channel steel 3, and the slider 2221 is not restricted. It extends outward to the limit position under the elastic force of the compression spring 2224. At the same time, the slider 2221 moves toward the axis of the bolt cap 222 until the slider 2221 enters the axial projection of the bolt cap 222. Therefore, the bolt cap 222 can be directly passed through the installation hole 31 together with the slider 2221, and then the nut 223 is controlled to rotate, so that the screw rod 221 moves to drive the bolt cap 222 to approach the nut 223 to achieve locking.

[0046] Reference Figure 1-7A positioning block 2225 is provided on the top of the slider 2221. The height of the positioning block 2225 is consistent with the depth of the mounting hole 31, and the positioning block 2225 is an arc-shaped block bent outward. During the fixing process of the bolt cap 222, the positioning block 2225 abuts against the bottom surface of the mounting plate 21 to form a pressure to compress the compression spring 2224 and drive the slider 2221 to extend outward, thereby expanding the effective area of ​​the bolt cap 222 for fixing. At the same time, the positioning block 2225 can also move outward with the slider 2221 until the positioning block 2225 abuts against the inner wall of the mounting hole 31, thereby improving the installation stability.

[0047] Specifically, after the bolt cap 222 passes through the mounting hole 31 along with the screw rod 221, the bottom surface of the mounting plate 21 is tightly attached to the top surface of the channel steel 3, and the nut 223 is driven to rotate, so that the screw rod 221 drives the bolt cap 222 to be screwed into the bottom surface of the channel steel 3. When the positioning block 2225 enters the mounting hole 31 and abuts against the bottom surface of the mounting plate 21, the top surface of the slider 2221 is flush with the bottom surface of the channel steel 3. As the bolt cap 222 continues to be tightened, the bolt cap 222 continues to move to compress the compression spring 2224, and at the same time, the slider 2221 moves outward and exceeds the coverage range of the mounting hole 31 until the slider 2221 moves to abut against the inner bottom of the mounting notch. At this time, the positioning block 2225 also moves outward with the slider 2221 and abuts against the inner wall of the mounting hole 31. The range of action of the slider 2221 is expanded to achieve fixation. At the same time, multiple positioning blocks 2225 expand outward at the same time to keep the screw 221 in a coaxial state in the mounting hole 31, and under the action of the positioning blocks 2225, it does not shake and remains stable. Compared with the bolt fixation in the prior art, during the installation process, there is no need to remove the nut 223, and the installation and fixation can be directly achieved, which reduces the risk of component loss during the installation process, improves installation efficiency, and is conducive to reducing the difficulty of operation and ensuring safety during the installation process.

[0048] A plurality of limiting grooves 2211 are axially provided on the outer peripheral surface of the screw rod 221, and a limiting block 211 matched with the limiting groove 2211 is provided on the inner wall of the through hole of the mounting plate 21. The limiting groove 2211 cooperates with the limiting block 211 to limit the screw rod 221 circumferentially, thereby ensuring that the screw rod 221 can move effectively when the nut 223 rotates, and there is no need to perform additional constraints on the bolt cap 222 when rotating the nut 223, thereby making the operation more convenient.

[0049] The driving mechanism 23 is used to drive the multiple fixing members 22 to be tightened synchronously, which can save time and improve work efficiency. Through synchronous control, it can ensure that the multiple fixing members 22 are tightened to the same torque and position to ensure consistency.

[0050] Reference Figure 1-3And 8-12, the driving mechanism 23 includes a transmission gear ring 231 rotatably sleeved on the outside of the lightning arrester body 1, the nut 223 is a circular ring, and teeth 2231 meshing with the transmission gear ring 231 are arranged on the outer peripheral surface of the nut 223. When the transmission gear ring 231 rotates, all the nuts 223 are driven to rotate, thereby realizing the synchronous fixation and disassembly of multiple fixing members 22, and a vertical rod 232 is fixedly installed on the side of the mounting plate 21, and a driving gear ring 233 meshing with the transmission gear ring 231 is rotatably arranged on the vertical rod 232. The driving gear ring 233 is rotatably sleeved with a driving ring 234 for controlling the continuous unidirectional rotation of the driving gear ring 233. During specific operation, the driving ring 234 is reciprocated to control the continuous unidirectional rotation of the driving gear ring 233, so as to drive the transmission gear ring 231 to rotate continuously, so as to realize the tightening and fixation of multiple fixing members 22.

[0051] Reference Figure 1-3 8-12, the driving ring 233 is provided with an annular groove, the driving ring 234 is rotatably arranged in the annular groove, the driving ring 234 rotates coaxially with the driving ring 233, and the outer peripheral surface of the driving ring 234 does not exceed the annular groove, so as to avoid the driving ring 234 from interfering with the transmission ring 231, and the driving ring 234 is provided with an active cavity 2341 (such as Fig.10As shown in the figure, a movable plate 2342 which can slide longitudinally is provided in the movable cavity 2341, and plug rods 2347 are fixedly provided on the top and bottom surfaces of the movable plate 2342, and multiple plug holes 2331 corresponding to the plug rods 2347 are provided on both side walls of the annular groove, and the outer end surface spacing of the two plug rods 2347 is equal to the thickness of the driving ring 234, so that the two plug rods 2347 cannot be inserted into the plug holes 2331 at the same time, and a control structure for controlling the plugging state of the plug rods 2347 and the plug holes 2331 is provided on the side of the movable plate 2342, and the position of the movable plate 2342 can be controlled by the control structure. When the movable plate 2342 is located above the movable cavity 2341, the plug rod 2347 located on the top surface of the movable plate 2342 is smoothly inserted into the plug hole 2331 on the upper end surface of the annular groove; when the movable plate 2342 is located below the movable cavity 2341, the plug rod 2347 located on the bottom surface of the movable plate 2342 The insertion rod 2347 is smoothly inserted into the insertion hole 2331 at the lower end surface of the ring groove. The end of the insertion rod 2347 has an oblique opening. The oblique openings on the insertion rod 2347 on the top and bottom surfaces of the movable plate 2342 are in opposite directions. Therefore, after the insertion rod 2347 is inserted into the corresponding insertion hole 2331, when the insertion rod 2347 moves in the direction of the oblique opening as the drive ring 234 moves, the oblique opening acts on the inner wall of the insertion hole 2331, exerting a lateral force on the insertion rod 2347, so that the insertion rod 2347 is separated from the insertion hole 2331, and the drive ring 234 cannot effectively transmit the drive gear ring 233. When the insertion rod 2347 moves in the opposite direction of the oblique opening as the drive ring 234 moves, the vertical side of the insertion rod 2347 acts on the inner wall of the insertion hole 2331, so that the insertion rod 2347 and the insertion hole 2331 resist each other and apply a thrust, and the drive ring 234 effectively transmits the drive gear ring 233, driving the drive gear ring 233 to rotate.

[0052] Reference Figure 1-3 and Figure 8-12 The control structure includes a sleeve 2343 (such as a sleeve 2343) rotatably disposed on the outer wall of the drive ring 234. Figure 8 , Fig.10 and Fig.11As shown in the figure, when controlling the driving ring 234 to rotate, it is necessary to use a tool, such as a hexagonal wrench or a long-handled tool such as a screwdriver. A pressing groove 2344 is provided on the side wall of the movable plate 2342. A pressing rod 2345 is fixedly provided at one end of the sleeve 2343 near the pressing groove 2344. A pressing ball 2346 is fixedly provided at the end of the pressing rod 2345. The pressing rod 2345 extends into the pressing groove 2344, so that the pressing ball 2346 abuts against the inner wall of the pressing groove 2344. One end is inserted into the sleeve 2343, and the torque is extended by the tool. When the sleeve 2343 is controlled to rotate, the pressure rod 2345 and the pressure ball 2346 will change their positions. When the pressure ball 2346 deflects upward, it drives the movable plate 2342 to move upward. When the pressure ball 2346 deflects downward, it drives the movable plate 2342 to move downward. The pressure ball 2346 is a sphere. When changing its position, the spherical surface of the pressure ball 2346 can always maintain good contact with the inner wall of the pressure groove 2344.

[0053] Reference Figure 1-3 8-12, a magnetic column 2321 corresponding to the movable cavity 2341 is slidably provided on the side of the vertical rod 232, a tension spring is provided between the magnetic column 2321 and the vertical rod 232, and a plurality of locking holes 2332 matching the magnetic column 2321 are preset on the inner wall of the driving gear ring 233, under the action of the tension spring, the magnetic column 2321 does not enter the locking hole 2332 without the action of external force, and a magnet 2348 with a magnetic pole opposite to that of the magnetic column 2321 is provided at one end of the movable plate 2342 near the magnetic column 2321, when the movable plate 2342 is located in the middle position of the movable cavity 2341, the magnet 2348 and the magnetic column 2321 attract each other, so that the tension spring is extended, and the magnetic column 2321 is inserted into the locking hole 2332, at this time, the driving gear ring 233 and the vertical rod 232 Circumferential locking is achieved. In this state, the driving gear ring 233, the transmission gear ring 231 and the nut 223 are all locked to improve the stability of the fixing part 22 and reduce the risk of the nut 223 loosening naturally after long-term use. It should be noted that the sleeve 2343 shaft has friction damping, and the movable plate 2342 can be stabilized in the middle of the movable cavity 2341 without including the gravity of the tool. When the movable plate 2342 is in other positions of the movable cavity 2341, the magnetic pole positions between the magnet 2348 and the magnetic column 2321 are misaligned, and the attraction is not enough to make the magnetic column 2321 extend a sufficient length to enter the locking hole 2332. Therefore, the driving ring 234 can drive the driving gear ring 233 to rotate, thereby realizing the installation and disassembly of the fixing part 22.

[0054] Both end surfaces of the nut 223 are provided with discs 2232, and the driving gear ring 233 is located between the two discs 2232. The discs 2232 ensure that the nut 223 and the driving gear ring 233 are always kept in a meshing state at the same horizontal plane, and in this state, the bottom surface of the nut 223 fits with the top surface of the insulating column 12.

[0055] The specific working principle of the present invention is as follows:

[0056] The channel steel 3 is horizontally welded to the power tower. When in use, the nut 223 and the bolt cap 222 are separated by a large distance, the compression spring 2224 is stretched to the maximum, the slider 2221 is located within the vertical projection range of the installation slot, the fixing part 22 is axially aligned with the installation hole 31, the bolt cap 222 and the slider 2221 are passed through the installation hole 31 to complete the initial positioning.

[0057] Use a long-handled tool to insert into the sleeve 2343 as a handle, press the tool downward, deflect the pressing ball 2346 upward, drive the movable plate 2342 to move upward, and the insertion rod 2347 located on the top surface of the movable plate 2342 is smoothly inserted into the insertion hole 2331 on the upper end surface of the ring groove, keep the tool in a downward tilted state, rotate the drive ring 234 clockwise, the insertion rod 2347 vertical side surface acts on the inner wall of the insertion hole 2331, so that the insertion rod 2347 and the insertion hole 2331 resist each other and apply thrust, and the drive ring 234 effectively transmits the drive gear ring 233, driving the drive gear ring 233 to rotate clockwise. After rotating for a certain distance, the driving ring 234 is reset. During the reset process, there is no need to deliberately press down the tool. When the insertion rod 2347 moves in the direction of the oblique mouth along with the driving ring 234, the oblique mouth acts on the inner wall of the socket 2331 to apply lateral force to the insertion rod 2347, so that the insertion rod 2347 is separated from the socket 2331, and the driving ring 234 cannot effectively transmit the drive gear ring 233. In this reciprocating manner, the driving gear ring 233 rotates continuously clockwise, driving the transmission gear ring 231 to rotate continuously, driving all the nuts 223 to rotate clockwise, and causing the screw 221 and the bolt cap 222 to move closer to the nut 223.

[0058] When the bolt cap 222 passes through the mounting hole 31 along with the screw rod 221, the bottom surface of the mounting plate 21 is in a tightly attached state with the top surface of the channel steel 3. When the screw rod 221 drives the bolt cap 222 to be screwed into the bottom surface of the channel steel 3, when the positioning block 2225 enters the mounting hole 31 and abuts against the bottom surface of the mounting plate 21, the top surface of the slider 2221 is flush with the bottom surface of the channel steel 3. As the bolt cap 222 continues to be tightened, the bolt cap 222 continues to move to compress the compression spring 2224, and at the same time, the slider 2221 moves outward and exceeds the coverage range of the mounting hole 31 until the slider 2221 moves to abut against the inner bottom of the mounting groove, and the positioning block 2225 also abuts against the inner wall of the mounting hole 31 at this time. The range of action of the slider 2221 is expanded to achieve fixation, and at the same time, multiple positioning blocks 2225 expand outward at the same time to keep the screw rod 221 in a coaxial state in the mounting hole 31, and under the action of the positioning block 2225, it does not shake and remains stable.

[0059] After the installation is completed, the sleeve 2343 is rotated by the tool to make the movable plate 2342 located in the middle position of the movable cavity 2341 and then the tool is pulled out. The magnet 2348 and the magnetic column 2321 attract each other, so that the tension spring is extended and the magnetic column 2321 is inserted into the locking hole 2332. At this time, the driving gear ring 233 and the vertical rod 232 are circumferentially locked. In this state, the driving gear ring 233, the transmission gear ring 231 and the nut 223 are all locked to improve the stability of the fixing part 22 and reduce the risk of the nut 223 becoming loose after long-term use.

[0060] The above description is only a preferred specific implementation manner 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 scheme and inventive concept 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. An adjustable lightning arrester, comprising an arrester body (1), a mounting assembly (2) and a channel steel (3) for fixing the arrester body (1), wherein a triangular grounding terminal (11) is arranged at the bottom of the arrester body (1), and insulating columns (12) are arranged at each vertex of the grounding terminal (11), characterized in that: The installation component (2) comprises: The mounting plate (21) is located below the grounding terminal (11) and is electrically insulated from the grounding terminal (11) by an insulating column (12); A plurality of fixing members (22) penetrate the mounting plate (21), the insulating column (12) and the grounding terminal (11), and include a screw rod (221), a bolt cap (222) fixed to the end of the screw rod (221) and a nut (223) threadably matched with the screw rod (221); the mounting plate (21) and the grounding terminal (11) are located between the bolt cap (222) and the nut (223); The channel steel (3) is provided with a mounting hole (31) adapted to the fixing member (22), and the bolt cap (222) is provided with an outward expansion mechanism; A driving mechanism (23) for driving the plurality of fixing members (22) to be fastened synchronously; The outward expansion mechanism comprises a plurality of sliders (2221); a plurality of mounting notches are provided on the outer peripheral surface of the bolt cap (222); the sliders (2221) are adapted to the mounting notches; a guide block (2222) is provided in the mounting notch; an inclined guide groove (2223) is provided on the slider (2221); the guide block (2222) penetrates the guide groove (2223) and is slidably connected to the guide groove (2223); and a compression spring (2224) is provided between the slider (2221) and the mounting notch.

2. The adjustable lightning arrester according to claim 1, characterized in that: The guide groove (2223) is located away from one end of the bolt cap (222) and approaches the axis of the bolt cap (222). When the compression spring (2224) is stretched to the maximum, the slider (2221) is located within the vertical projection range of the installation slot. When the compression spring (2224) is compressed to the limit position, the slider (2221) exceeds the vertical projection range of the installation slot.

3. The adjustable lightning arrester according to claim 2, characterized in that: A positioning block (2225) is provided on the top of the sliding block (2221); the height of the positioning block (2225) is consistent with the depth of the mounting hole (31), and the positioning block (2225) is an arc-shaped block that bends outwards.

4. The adjustable lightning arrester according to claim 1, characterized in that: The outer peripheral surface of the screw rod (221) is provided with a plurality of limiting grooves (2211) along the axial direction, and the inner wall of the through hole of the mounting plate (21) is provided with limiting blocks (211) matched with the limiting grooves (2211).

5. The adjustable lightning arrester according to claim 2, characterized in that: The driving mechanism (23) comprises a transmission gear ring (231) rotatably sleeved outside the arrester body (1); the nut (223) is annular in shape; teeth (2231) meshing with the transmission gear ring (231) are arranged on the outer peripheral surface of the nut (223); a vertical rod (232) is fixedly mounted on the side of the mounting plate (21); a driving gear ring (233) meshing with the transmission gear ring (231) is rotatably arranged on the vertical rod (232); and a driving ring (234) for controlling the continuous unidirectional rotation of the driving gear ring (233) is rotatably sleeved on the driving gear ring (233).

6. The adjustable lightning arrester according to claim 5, characterized in that: The driving gear ring (233) is provided with an annular groove, the driving ring (234) is rotatably arranged in the annular groove, the driving ring (234) is provided with an active cavity (2341), a longitudinally slidable active plate (2342) is arranged in the active cavity (2341), the top and bottom surfaces of the active plate (2342) are fixedly provided with an insertion rod (2347), the two side walls of the annular groove are provided with a plurality of insertion holes (2331) corresponding to the insertion rod (2347), the side surface of the active plate (2342) is provided with a control structure for controlling the insertion state of the insertion rod (2347) and the insertion hole (2331), the end of the insertion rod (2347) has an oblique opening, and the oblique openings on the top and bottom surfaces of the active plate (2342) are in opposite directions.

7. The adjustable lightning arrester according to claim 6, characterized in that: The control structure comprises a sleeve (2343) rotatably arranged on the outer wall of the driving ring (234); a pressure groove (2344) is provided on the side wall of the movable plate (2342); a pressure rod (2345) is fixedly arranged at one end of the sleeve (2343) close to the pressure groove (2344); a pressure ball (2346) is fixedly arranged at the end of the pressure rod (2345); the pressure rod (2345) extends into the pressure groove (2344) so ​​that the pressure ball (2346) abuts against the inner wall of the pressure groove (2344).

8. The adjustable lightning arrester according to claim 7, characterized in that: A magnetic column (2321) corresponding to the movable cavity (2341) is slidably arranged on the side of the vertical rod (232), a tension spring is arranged between the magnetic column (2321) and the vertical rod (232), a plurality of locking holes (2332) adapted to the magnetic column (2321) are preset on the inner wall of the driving gear ring (233), and a magnet (2348) having a magnetic pole opposite to that of the magnetic column (2321) is arranged at one end of the movable plate (2342) close to the magnetic column (2321).

9. The adjustable lightning arrester according to claim 5, characterized in that: Both end surfaces of the nut (223) are provided with discs (2232), and the driving gear ring (233) is located between the two discs (2232).

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