An overhead cable insulation mounting post

Abstract

The application belongs to the technical field of cable installation devices, and particularly relates to an overhead cable insulation installation column, which comprises a rectangular column, a clamping device and a stretching adjusting device, the clamping device is arranged at the middle part of the rectangular column, and the stretching adjusting device is installed at the top of the clamping device; the clamping device comprises a mounting platform, a fixed clamp and a movable clamp, the fixed clamp is integrally formed with the mounting platform and extends downward, the movable clamp is inserted into the mounting platform and is located above the fixed clamp, a clamping groove is arranged on the opposite side of the fixed clamp and the movable clamp, the fixed clamp and the movable clamp form a cable clamp, and a limiting buckle is arranged on the side of the cable clamp away from the rectangular column; the scheme provides a cable installation device which is small in size and convenient to quickly install, aiming at the cable installation requirements in special environments such as pits, tunnels and mine tunnels; multiple insulation barriers are adopted to effectively block the electric leakage conduction path, so that excellent insulation performance can be maintained even in a humid and dusty environment, and the risk of electric shock is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of cable installation equipment technology, specifically to an overhead cable insulation installation post. Background Technology

[0002] In special operating environments such as pits, tunnels, and mines, the installation and fixation of overhead cables face many technical challenges. These environments are generally characterized by narrow spaces and complex geological structures, as well as problems such as mechanical vibration, large temperature fluctuations, and high potential leakage risks, which impose stringent requirements on cable installation devices.

[0003] For example:

[0004] 1) Pit shafts, tunnels and mine shafts usually contain water, humid air and conductive dust, which can easily corrode the cable insulation layer. If the insulation performance of the installation device is insufficient, it can easily cause leakage accidents and endanger the safety of workers. At the same time, metal materials are prone to corrosion in such environments, which further increases the risk of insulation failure.

[0005] 2) Due to the limited working space, traditional cable installation devices are often bulky and inconvenient to adjust, making it difficult to adapt to the rapid installation of cables of different diameters. Moreover, they are mostly fixed structures and cannot cope with the thermal expansion and contraction of cables caused by temperature changes (such as temperature differences caused by mine ventilation).

[0006] 3) During pit excavation, tunnel construction and mining, there is continuous mechanical vibration. Traditional clamping devices are prone to cable loosening and falling off due to vibration. At the same time, the cable will be stretched or contracted under the action of vibration, geological settlement and other effects. The lack of an effective compensation mechanism will lead to the cable being overly taut or loose, accelerating the aging of the insulation layer or even breaking it. Summary of the Invention

[0007] The purpose of this invention is to provide an overhead cable insulation mounting post to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An overhead cable insulation installation post includes a rectangular post, a clamping device, and a tension adjustment device. The clamping device is located in the middle of the rectangular post, and the tension adjustment device is installed on the top of the clamping device.

[0010] The clamping device includes an installation platform, a fixed clamp, and a movable clamp. The fixed clamp is integrally formed with the installation platform and extends downward. The movable clamp is inserted into the installation platform and is located above the fixed clamp. Clamping grooves are formed on opposite sides of the fixed clamp and the movable clamp. The fixed clamp and the movable clamp form a cable clamp. A limit buckle is provided on the side of the cable clamp away from the rectangular column. A movable clamp clamping spring is provided in the inner cavity of the installation platform near the movable clamp.

[0011] The tension adjustment device includes a central air exchange cylinder and extension cylinders on both sides of the air exchange cylinder. A piston is inserted into the inner cavity of the extension cylinder, and an energy-absorbing spring is installed inside the extension cylinder that abuts against one side of the piston. Energy absorption is achieved through deformation.

[0012] The air exchange cylinder is equipped with a main air passage, an exhaust passage, and an intake passage. An exhaust check valve is installed in the exhaust passage, and an intake check valve is installed in the main air passage and the intake passage. When the piston moves, it uses air suction to provide damping and buffering.

[0013] Cable clamps are symmetrically arranged on both sides of the clamping device. The cable clamps and the clamping device are located on the same horizontal line. After the cable clamps clamp the cable, they move synchronously with the tension adjustment device.

[0014] Preferably, abutment posts are symmetrically arranged on the left and right sides of the back of the rectangular column, and elastic abutment pieces are distributed between the two abutment posts; both the abutment posts and the elastic abutment pieces are made of insulating material, and the abutment posts and elastic abutment pieces are separated between the installation wall and the rectangular column, using the insulation properties to prevent current from being conducted to the wall; anchor rods are provided at the four corners of the rectangular column, and the anchor rods penetrate the rectangular column and are inserted into the wall.

[0015] Preferably, the limiting buckle includes upper and lower buckle plates and a limiting rod. One end of the limiting rod is rotatably mounted on the lower buckle plate, and the other end of the limiting rod is fastened to the upper buckle plate. The limiting rod blocks the side of the cable to prevent the cable from detaching from the constraint of the cable clamp. The movable clamp uses the elasticity of the movable clamp's pressing spring to clamp cables of different sizes.

[0016] The limiting rod consists of two rods, an upper rod and a lower rod. The upper rod is movably inserted into the lower rod. A limiting rod extension spring connects the two rods. The two rods are stretched synchronously with the moving clamp as the limiting rod extends, thus achieving elastic adjustment.

[0017] Preferably, the top of the installation platform is symmetrically provided with fixed panels, and the tension adjustment device is installed inside the fixed panels; the outer end of the extension cylinder is provided with a connecting ring, and a piston rod is provided on one side of the piston, and the piston rod, piston and connecting ring are integrally formed;

[0018] The energy-absorbing spring is sleeved on the piston rod. When the piston moves to one side of the connecting ring, it compresses the energy-absorbing spring; conversely, when the energy-absorbing spring rebounds, it resets the piston inward. Energy absorption and conversion are achieved through spring deformation.

[0019] A limit ring is provided in the inner cavity of the extension cylinder. The limit ring abuts against the end of the energy-absorbing spring away from the piston, and a sealing ring is provided at the limit ring. A sealing ring is provided on the inner wall of the extension cylinder to enhance the damping effect of the piston.

[0020] Preferably, a main air passage is arranged horizontally in the middle of the air exchange cylinder, and the two ends of the main air passage are connected to the inner cavities of the two side extension cylinders. An air intake passage is vertically opened in the middle of the main air passage. The air intake passages are arranged symmetrically, and an air intake one-way valve is installed in the air intake passage.

[0021] An exhaust channel is vertically opened near the piston of the air exchange cylinder, and the exhaust channels are symmetrically arranged and connect inward to the main air passage; an exhaust one-way valve is installed in the exhaust channel; an intake one-way valve is also installed in the main air passage between the intake channel and the exhaust channel.

[0022] Preferably, when the piston moves outward, a pressure difference is formed between the cavity of the extension cylinder and the outside. Air enters the intake channel after opening the intake one-way valve through the pressure difference, and then is introduced into the main air passage through the intake channel, and then introduced into the extension cylinder through the main air passage. When the piston moves outward, it attracts air and plays a damping role; and the air is restricted by the two intake one-way valves when it enters, which further enhances the damping effect.

[0023] When the piston moves inward under the action of the energy-absorbing spring, it squeezes the air out of the extension cylinder. The air is discharged to the outside through the exhaust passage and the exhaust one-way valve. The intake one-way valve restricts the air from entering the intake passage, forming a fully enclosed and non-interfering intake / exhaust passage.

[0024] Preferably, the main body of the cable clamp is an elastic clamp, and the space between the elastic clamps is a clamping hole for clamping the cable; locking bolts are evenly arranged at the bottom of the cable clamp, and the bottom of the cable clamp is fixed by the locking bolts to form a clamping of the cable.

[0025] A tension sleeve is installed on the top of the cable clamp, and a connector is provided on the top of the tension sleeve. A connecting cable is provided on the connector, and the other end of the connecting cable is installed on the connecting ring. A rotating shaft is installed between the bottom end of the tension sleeve and the fixed base, so that the tension sleeve can rotate.

[0026] Preferably, the cable clamp is held on the cable and moves synchronously with the cable as it is stretched. The connecting cable transmits the force to the tension adjustment device and drives the piston to move. When the piston moves, the force is converted under the buffer of the energy-absorbing spring and the air vent, thus realizing the tension compensation of the cable.

[0027] Preferably, the bottom of the tension sleeve is provided with a fixing seat, which is fixed to the top of the cable clamp by bolts; a tension rod is inserted into the tension sleeve, one end of the tension rod is connected to the connector, and the other end is connected to a tension spring; when the tension rod moves, it compresses the internal tension spring, so that the tension sleeve has an elastic adaptive compensation function.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] This solution addresses the cable installation needs in special environments such as pits, tunnels, and mines by providing a compact and quick-installation cable installation device. It employs multiple insulation barriers to effectively block leakage current conduction paths, maintaining excellent insulation performance even in humid and dusty pit / mine environments, significantly reducing the risk of electric shock.

[0030] The modular integrated rectangular column, clamping device, and tension adjustment device have a compact overall structure, making them suitable for installation in narrow pits and tunnels. They can be fixed tightly against rock walls or tunnel sidewalls without occupying the working passage. The clamping device uses a movable clamping spring to achieve adaptive clamping of multiple specifications of cables. It can quickly adapt to cables of different diameters without changing parts, meeting the installation needs of various cables in tunnels / mines.

[0031] This solution features a composite compensation mechanism to enhance vibration resistance. The energy-absorbing spring and pneumatic damping composite tension adjustment device can absorb the impact force caused by mechanical vibration and geological subsidence. Through the synergistic effect of spring deformation and airflow damping, the cable tension speed is reduced, preventing cable loosening or breakage caused by vibration.

[0032] The cable clamp and the clamping device form a three-point fixation, which, together with the rotatable tension sleeve and the built-in tension spring, realizes multi-directional deformation compensation, ensuring that the cable always maintains a stable and taut state in a continuous vibration environment, and reducing fatigue damage to the insulation layer. Attached Figure Description

[0033] Figure 1 This is a front view of the present invention;

[0034] Figure 2 This is a rear view of the present invention;

[0035] Figure 3 This is a side view of the present invention;

[0036] Figure 4 This is a side view of the clamping device of the present invention;

[0037] Figure 5 This is a schematic diagram of the installation of the movable clamping spring of the present invention;

[0038] Figure 6 This is a schematic diagram of the limiting buckle of the present invention;

[0039] Figure 7 For the present invention Figure 6 Enlarged view of Part A;

[0040] Figure 8 This is a cross-sectional view of the ventilation cylinder and extension cylinder of the present invention;

[0041] Figure 9 This is a cross-sectional view of the ventilation cylinder of the present invention;

[0042] Figure 10 This is a schematic diagram of the cable clamp of the present invention;

[0043] Figure 11 This is a cross-sectional view of the stretch sleeve of the present invention.

[0044] In the diagram: 100 rectangular column, 101 anchor bolt, 102 abutment column, 103 elastic abutment plate;

[0045] 200 Clamping device, 201 Fixed clamp, 202 Movable clamp, 203 Limit buckle, 204 Limit rod, 205 Limit rod telescopic spring, 206 Movable clamp clamping spring;

[0046] 300 Tension adjustment device, 301 Air exchange cylinder, 302 Extension cylinder, 303 Connecting ring, 304 Piston rod, 305 Piston, 306 Energy-absorbing spring, 307 Sealing ring, 308 Main air passage, 309 Exhaust passage, 310 Intake passage, 311 Intake check valve, 312 Exhaust check valve;

[0047] 400 Cable clamp, 401 Clamping hole, 402 Locking bolt, 403 Tension sleeve, 404 Fixing base, 405 Connector, 406 Connecting cable, 407 Tension rod, 408 Tension spring. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Example:

[0051] Please see Figure 1-11 The present invention provides the following technical solution:

[0052] An overhead cable insulation installation post includes a rectangular post 100, a clamping device 200, and a tension adjustment device 300; the clamping device 200 is disposed in the middle of the rectangular post 100, and the tension adjustment device 300 is installed on the top of the clamping device 200.

[0053] On the back of the rectangular column 100, there are symmetrical abutment columns 102 on the left and right sides, and elastic abutment pieces 103 are distributed between the two abutment columns 102. Both the abutment columns 102 and the elastic abutment pieces 103 are made of insulating material. The abutment columns 102 and the elastic abutment pieces 103 are separated between the mounting wall and the rectangular column 100. The insulating properties are used to block the current and prevent the leakage of the cable from being conducted to the wall.

[0054] Anchor rods 101 are provided at each of the four corners of the rectangular column 100. The anchor rods 101 penetrate the rectangular column 100 and are inserted into the wall. The clamping device 200 includes an installation platform, a fixed clamp 201 and a movable clamp 202. The fixed clamp 201 is integrally formed with the installation platform and extends downward. The movable clamp 202 is inserted into the installation platform and is located above the fixed clamp 201. The fixed clamp 201 and the movable clamp 202 are provided with clamping grooves for fixing cables on the side closest to each other.

[0055] A movable clamping spring 206 is provided in the inner cavity of the installation platform near the movable clamp 202. The movable clamping spring 206 pushes the movable clamp 202 downward to assist in clamping the cable. At the same time, the movable clamp 202 can be adjusted upward by the movable clamping spring 206 to accommodate cables of different sizes.

[0056] The fixed clamp 201 and the movable clamp 202 form a cable clamp. Multiple limit buckles 203 are provided on the side of the cable clamp away from the rectangular column 100. Each limit buckle 203 includes two buckle plates and a limit rod 204. One end of the limit rod 204 is rotatably mounted on the lower buckle plate, and the other end of the limit rod 204 is fastened to the upper buckle plate. The limit rod 204 blocks the side of the cable to prevent the cable from detaching from the constraint of the cable clamp.

[0057] The limiting rod 204 consists of two rods, an upper rod and a lower rod. The upper rod is movably inserted into the lower rod. A limiting rod extension spring 205 is connected between the two rods. The two rods can be stretched synchronously as the movable clamp 202 rises using the limiting rod extension spring 205, thus achieving the purpose of elastic adjustment.

[0058] The top of the installation platform is symmetrically provided with fixed panels, and the tension adjustment device 300 is installed in the fixed panels. The tension adjustment device 300 includes a central air exchange cylinder 301 and extension cylinders 302 provided on both sides of the air exchange cylinder 301. A connecting ring 303 is provided at the outer end of the extension cylinder 302, and a piston 305 is inserted into the inner cavity of the extension cylinder 302. A piston rod 304 is provided on one side of the piston 305, and the piston rod 304, the piston 305 and the connecting ring 303 are integrally formed.

[0059] An energy-absorbing spring 306 is provided inside the extension cylinder 302. The energy-absorbing spring 306 is sleeved on the piston rod 304, and one end of the energy-absorbing spring 306 abuts against one side of the piston 305. When the piston 305 moves to one side of the connecting ring 303, it compresses the energy-absorbing spring 306. Conversely, the energy-absorbing spring 306 can also reset the piston 305 inward. Energy absorption and conversion are achieved through the deformation of the spring.

[0060] A limiting ring is provided in the inner cavity of the extension cylinder 302. The limiting ring abuts against the end of the energy-absorbing spring 306 away from the piston 305, and a sealing ring is provided at the limiting ring. A sealing ring 307 is provided on the inner wall of the extension cylinder 302 to enhance the damping effect of the piston 305.

[0061] A main air passage 308 is horizontally arranged in the middle of the air exchange cylinder 301. The two ends of the main air passage 308 are connected to the inner cavity of the two side extension cylinders 302. An air inlet passage 310 is vertically opened in the middle of the main air passage 308. The air inlet passages 310 are symmetrically arranged, and an air inlet one-way valve 311 is installed in the air inlet passage 310.

[0062] An exhaust passage 309 is vertically opened near the piston 305 in the air exchange cylinder 301, and the exhaust passage 309 is symmetrically arranged and communicates inward with the main air passage 308; an exhaust one-way valve 312 is provided in the exhaust passage 309; in addition, an intake one-way valve 311 is also installed in the main air passage 308 at the position between the intake passage 310 and the exhaust passage 309.

[0063] When piston 305 moves outward, a pressure difference is formed between the cavity of extension cylinder 302 and the outside. Air enters the intake passage 310 after opening the intake one-way valve 311 through the pressure difference, and then is introduced into the main air passage 308 through the intake passage 310, and then into the extension cylinder 302 through the main air passage 308. When piston 305 moves outward, it attracts air and plays a similar role to damping, achieving the effect of deceleration and energy absorption. Furthermore, the air is restricted by the two intake one-way valves 311 when it enters, which further enhances the damping effect and improves the energy absorption and conversion efficiency.

[0064] When the piston 305 moves inward under the action of the energy-absorbing spring 306, it squeezes out the air in the extension tube 302. The air is discharged to the outside through the exhaust passage 309 and the exhaust one-way valve 312, completing an energy-absorbing action similar to a syringe. When the air is discharged, the intake one-way valve 311 can prevent the air from entering the intake passage 310, forming a fully enclosed and non-interfering intake / exhaust passage.

[0065] Cable clamps 400 are symmetrically arranged on both sides of the clamping device 200. The cable clamps 400 and the clamping device 200 are located on the same horizontal line and are both used to clamp cables. The main body of the cable clamp 400 is an elastic clamp, and the space between the elastic clamps is a clamping hole 401, which is used to clamp the cable. Locking bolts 402 are evenly arranged at the bottom of the cable clamp 400. When the cable clamp 400 is clamped on the cable, the bottom of the cable clamp 400 is fixed with the locking bolts 402 to complete the clamping of the cable and make the clamping of the cable clamp 400 more stable.

[0066] A tension sleeve 403 is installed on the top of the cable clamp 400. A connector 405 is provided on the top of the tension sleeve 403. A connecting cable 406 is provided on the connector 405. The other end of the connecting cable 406 is installed on the connecting ring 303. When the cable clamp 400 is clamped on the cable, it will move synchronously with the cable tension. At this time, the connecting cable 406 will transmit the force to the tension adjustment device 300. The force of the cable extension and contraction will drive the piston 305 to move. When the piston 305 moves, the force is converted under the buffer of the energy-absorbing spring 306 and the air exchange cylinder 301 to realize the cable tension compensation and keep the cable taut.

[0067] A fixing seat 404 is provided at the bottom of the tension sleeve 403, and the fixing seat 404 is fixed to the top of the cable clamp 400 by bolts. A tension rod 407 is inserted into the tension sleeve 403. One end of the tension rod 407 is connected to the connector 405, and the other end is connected to the tension spring 408. When the tension rod 407 moves, it compresses the internal tension spring 408, so that the tension sleeve 403 has an elastic adaptation function, further improving the tension compensation effect. A rotating shaft is installed between the bottom end of the tension sleeve 403 and the fixing seat 404, so that the tension sleeve 403 has a rotation effect, further enhancing the elastic adaptation function of the tension sleeve 403.

[0068] The cross-section of the support column 102 is cylindrical, which can disperse the pressure of the rectangular column 100 on the wall and prevent the wall from cracking; the material is weather-resistant epoxy resin, and its insulation performance does not decrease when exposed to complex environments for a long time.

[0069] The elastic abutment piece 103 is made of EPDM rubber and is evenly distributed between the two abutment posts 102. It has excellent elastic recovery. During installation, the elastic abutment piece 103 can fill the uneven gaps in the wall surface and further block the current conduction path, forming a double insulation barrier of rectangular post 100, elastic abutment piece 103 and wall surface.

[0070] A thick silicone rubber pad is installed in the clamping groove of the fixing clamp 201, which not only enhances the friction to prevent the cable from slipping, but also avoids excessive clamping force from damaging the cable insulation layer.

[0071] Working principle:

[0072] The rectangular column 100 is the foundation of the entire mounting column, realizing the physical isolation of cables from the mounting wall and providing a component for a stable mounting base;

[0073] The rectangular column 100 itself is made of high-strength insulating material to prevent cable leakage from being directly conducted to itself; at the same time, the backing column 102 and the elastic abutment piece 103 on its back form a double insulation barrier. The backing column 102 physically separates the rectangular column 100 from the wall, and the elastic abutment piece 103 fills the gap in the wall and further blocks the current path. Even if the cable leaks electricity accidentally, the current will be blocked by the insulating components and cannot be conducted to the wall to avoid safety hazards.

[0074] The anchor rods 101 at the four corners of the rectangular column 100 penetrate the column and are rigidly connected to the expansion bolts on the wall. The anti-slip texture on the surface of the anchor rod 101 enhances the interlocking force with the expansion bolts, ensuring that the rectangular column 100 does not loosen under the action of external forces such as cable tension and wind vibration, and provides stable support for subsequent cable clamping and tension adjustment.

[0075] The fixed clamp 201 is integrally formed with the installation platform, providing bottom support for the cable; the movable clamp 202 is inserted into the installation platform via a sliding structure, and the top is connected to the movable clamp clamping spring 206; when installing the cable, pulling the movable clamp 202 upward can compress the movable clamp clamping spring 206, and after the cable is placed in, it is released, and the movable clamp clamping spring 206 releases the pre-pressure and pushes the movable clamp 202 downward, clamping the cable together with the fixed clamp 201. The elastic deformation of the movable clamp clamping spring 206 can be adaptively adjusted according to the cable diameter; the silicone rubber pad in the clamping groove further enhances the friction, preventing the cable from sliding due to longitudinal vibration, while buffering the clamping force and protecting the cable insulation layer from being squeezed and damaged.

[0076] The limiting buckle 203 on the outside of the cable clamp forms a lateral protection with the upper and lower buckle plates and the telescopic limiting rod 204. The lower buckle plate is synchronized with the fixed clamp 201, and the upper buckle plate rises and falls with the movable clamp 202 to ensure that the limiting buckle 203 is always aligned with the side of the cable. The limiting rod 204 is a two-stage telescopic structure and has a built-in limiting rod telescopic spring 205. When the movable clamp 202 rises, the upper rod moves upward and the limiting rod telescopic spring 205 is stretched. When the movable clamp 202 falls, the limiting rod telescopic spring 205 is reset. The limiting rod 204 always maintains the blockage on the side of the cable to prevent the cable from falling out of the clamping groove due to lateral wind blowing and vibration.

[0077] In response to the deformation of overhead cables caused by temperature changes and wind loads, the tension adjustment device 300 uses a composite structure of energy-absorbing spring 306 and air pressure damping to convert the external force generated by cable deformation into spring elastic potential energy and airflow damping energy, thereby achieving adaptive tension adjustment.

[0078] When the cable is stretched due to thermal expansion and contraction or wind pull, the force is transmitted to the connecting ring 303 of the tension adjustment device 300 through the connecting cable 406, which drives the piston rod 304 and piston 305 to move outward along the extension cylinder 302. When the piston 305 moves outward, it compresses the energy-absorbing spring 306 in the extension cylinder 302. The energy-absorbing spring 306 undergoes elastic deformation, converting the mechanical energy of the cable stretching into the elastic potential energy of the energy-absorbing spring 306, initially absorbing external force and preventing the cable from directly bearing excessive tension and breaking.

[0079] The piston 305 moves outward, increasing the volume of the inner cavity of the extension cylinder 302 and creating a negative pressure. Outside air opens the intake check valve 311 through the intake channel 310 of the air exchange cylinder 301 and flows into the inner cavity of the extension cylinder 302 through the main air passage 308. At this time, the exhaust check valve 312 is closed due to the negative pressure inside the extension cylinder 302, and the airflow can only enter from the intake channel 310. The double intake check valve 311 between the main air passage 308 and the intake channel 310 further increases the airflow resistance, forming a pressure damping effect, slowing down the movement speed of the piston 305, avoiding the impact caused by the cable stretching too fast, and converting some mechanical energy into airflow friction energy to achieve secondary energy absorption.

[0080] When the load on the cable is removed, the tension adjustment device 300 pushes the cable back to a taut state by resetting the energy-absorbing spring 306 and releasing the air pressure. The energy-absorbing spring 306 releases the stored elastic potential energy, pushing the piston 305 to move inward along the extension cylinder 302. The piston rod 304, connecting ring 303, connecting cable 406 and the cable retract synchronously.

[0081] The piston 305 moves inward, reducing the volume of the inner cavity of the extension cylinder 302 and increasing the air pressure. The internal air is discharged to the outside through the exhaust passage 309 of the air exchange cylinder 301, which opens the exhaust one-way valve 312. At this time, the intake one-way valve 311 is closed due to the positive pressure inside the extension cylinder 302, and the airflow can only be discharged from the exhaust passage 309. This prevents the backflow of airflow from interfering with the reset of the piston 305, ensuring that the piston 305 moves smoothly and finally pulls the cable back to the initial tension state to prevent the cable from drooping due to excessive slack. The exhaust one-way valve 312 slowly discharges gas to prevent mechanical damage caused by excessive rebound speed.

[0082] The cable clamp 400 and the main clamping device 200 form a three-point fixation, which serves to distribute the cable force and enhance the overall tensile compensation. The elastic clamp clamps the side of the cable through the locking bolt 402, which complements the fixation of the clamping device 200 and prevents the cable from rotating or sliding due to insufficient clamping force in one direction.

[0083] The tension sleeve 403 at the top of the cable clamp 400 has a built-in tension spring 408 and is connected to the fixed seat 404 via a rotating shaft. When the cable is stretched, the connecting cable 406 pulls the tension rod 407, compressing the tension spring 408 to absorb energy. When the cable is contracted, the tension spring 408 returns to its original position and pushes the tension rod 407. At the same time, the rotating shaft allows the tension sleeve 403 to rotate to a limited extent to adapt to the angle change when the cable is stretched. The deformation force of the cable in different directions can be transmitted to the tension adjustment device 300 to avoid localized force concentration that could damage the cable or clamp and further improve the stability of the tension compensation.

[0084] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An overhead cable insulation installation post, comprising a rectangular post (100), a clamping device (200), and a tension adjustment device (300), characterized in that: The clamping device (200) is located in the middle of the rectangular column (100), and the tension adjustment device (300) is installed on the top of the clamping device (200); The clamping device (200) includes an installation platform, a fixed clamp (201), and a movable clamp (202). The fixed clamp (201) is integrally formed with the installation platform and extends downward. The movable clamp (202) is inserted into the installation platform and is located above the fixed clamp (201). Clamping grooves are provided on the opposite sides of the fixed clamp (201) and the movable clamp (202). The fixed clamp (201) and the movable clamp (202) form a cable clamp. A limit buckle (203) is provided on the side of the cable clamp away from the rectangular column (100). A movable clamp clamping spring (206) is provided on the side of the inner cavity of the installation platform near the movable clamp (202). The tension adjustment device (300) includes a central air exchange cylinder (301) and extension cylinders (302) on both sides of the air exchange cylinder (301). A piston (305) is inserted into the inner cavity of the extension cylinder (302), and an energy-absorbing spring (306) is provided inside the extension cylinder (302) to abut against one side of the piston (305), thereby achieving energy absorption through deformation. The air exchanger (301) is provided with a main air passage (308), an exhaust passage (309) and an intake passage (310). An exhaust check valve (312) is provided in the exhaust passage (309), and an intake check valve (311) is provided in the main air passage (308) and the intake passage (310). When the piston (305) moves, it provides damping buffer by drawing in air. Cable clamps (400) are symmetrically arranged on both sides of the clamping device (200). The cable clamps (400) and the clamping device (200) are located on the same horizontal line. After the cable clamps (400) clamp the cable, they move synchronously with the tension adjustment device (300).

2. The overhead cable insulation mounting post according to claim 1, characterized in that: Abutment posts (102) are symmetrically arranged on the left and right sides of the back of the rectangular column (100), and elastic abutment pieces (103) are distributed between the two abutment posts (102). The abutment posts (102) and elastic abutment pieces (103) are both made of insulating material. The abutment posts (102) and elastic abutment pieces (103) are separated between the wall and the rectangular column (100) and use their insulating properties to block the current from being conducted to the wall. Anchor rods (101) are provided at the four corners of the rectangular column (100). The anchor rods (101) penetrate the rectangular column (100) and are inserted into the wall.

3. The overhead cable insulation mounting post according to claim 1, characterized in that: The limiting buckle (203) includes two buckle plates and a limiting rod (204). One end of the limiting rod (204) is rotatably mounted on the lower buckle plate, and the other end of the limiting rod (204) is fastened to the upper buckle plate. The limiting rod (204) blocks the side of the cable to prevent the cable from detaching from the cable clamp. The movable clamp (202) uses the elasticity of the movable clamp against the spring (206) to clamp cables of different sizes. The limiting rod (204) consists of two rods, an upper rod and a lower rod. The upper rod is movably inserted into the lower rod. A limiting rod extension spring (205) is connected between the two rods. The two rods are stretched synchronously with the moving clamp (202) by the limiting rod extension spring (205) to achieve elastic adjustment.

4. The overhead cable insulation mounting post according to claim 1, characterized in that: The top of the installation platform is symmetrically provided with fixed panels, and the tension adjustment device (300) is installed inside the fixed panels; the outer end of the extension cylinder (302) is provided with a connecting ring (303), and a piston rod (304) is provided on one side of the piston (305), and the piston rod (304), piston (305) and connecting ring (303) are integrally formed. The energy-absorbing spring (306) is sleeved on the piston rod (304). When the piston (305) moves to the side of the connecting ring (303), it compresses the energy-absorbing spring (306). Conversely, when the energy-absorbing spring (306) rebounds, it resets the piston (305) inward. Energy absorption and conversion are achieved through spring deformation. A limiting ring is provided in the inner cavity of the extension cylinder (302). The limiting ring abuts against the end of the energy-absorbing spring (306) away from the piston (305), and a sealing ring is provided at the limiting ring. A sealing ring (307) is provided on the inner wall of the extension cylinder (302) to enhance the damping effect of the piston (305).

5. The overhead cable insulation mounting post according to claim 4, characterized in that: A main air passage (308) is horizontally arranged in the middle of the air exchange cylinder (301). The two ends of the main air passage (308) are connected to the inner cavity of the two side extension cylinders (302). An air inlet passage (310) is vertically opened in the middle of the main air passage (308). The air inlet passages (310) are symmetrically arranged, and an air inlet one-way valve (311) is provided in the air inlet passage (310). An exhaust passage (309) is vertically opened near the piston (305) of the air exchange cylinder (301), and the exhaust passage (309) is symmetrically arranged and communicates with the main air passage (308) inward; an exhaust one-way valve (312) is installed in the exhaust passage (309); an intake one-way valve (311) is also installed in the main air passage (308) between the intake passage (310) and the exhaust passage (309).

6. The overhead cable insulation mounting post according to claim 5, characterized in that: When the piston (305) moves outward, a pressure difference is formed between the cavity of the extension cylinder (302) and the outside. Air enters the intake passage (310) after opening the intake one-way valve (311) through the pressure difference, and then is introduced into the main air passage (308) through the intake passage (310), and then introduced into the extension cylinder (302) through the main air passage (308). When the piston (305) moves outward, it attracts air and plays a damping role; and the air is restricted by the two intake one-way valves (311) when it enters, which further enhances the damping effect. When the piston (305) moves inward under the action of the energy-absorbing spring (306), it squeezes out the air in the extension cylinder (302). The air is discharged to the outside through the exhaust passage (309) and the exhaust one-way valve (312). The intake one-way valve (311) restricts the air from entering the intake passage (310), forming a fully enclosed and non-interfering intake / exhaust passage.

7. The overhead cable insulation mounting post according to claim 1, characterized in that: The main body of the cable clamp (400) is an elastic clamp, and the space between the elastic clamps is a clamping hole (401) for clamping the cable; locking bolts (402) are evenly arranged at the bottom of the cable clamp (400), and the bottom of the cable clamp (400) is fixed by the locking bolts (402) to form a clamping of the cable; A tension sleeve (403) is installed on the top of the cable clamp (400), and a connector (405) is provided on the top of the tension sleeve (403). A connecting cable (406) is provided on the connector (405), and the other end of the connecting cable (406) is installed on the connecting ring (303). A rotating shaft is installed between the bottom end of the tension sleeve (403) and the fixed seat (404) so ​​that the tension sleeve (403) has a rotating effect.

8. The overhead cable insulation mounting post according to claim 7, characterized in that: The cable clamp (400) is clamped on the cable and moves synchronously with the cable tension. The connecting cable (406) transmits the force to the tension adjustment device (300) and drives the piston (305) to move. When the piston (305) moves, the force is converted under the buffer of the energy-absorbing spring (306) and the air exchange cylinder (301) to realize the tension compensation of the cable.

9. The overhead cable insulation mounting post according to claim 8, characterized in that: The bottom of the tension sleeve (403) is provided with a fixing seat (404), which is fixed to the top of the cable clamp (400) by bolts; a tension rod (407) is inserted into the tension sleeve (403), one end of the tension rod (407) is connected to the connector (405), and the other end is connected to the tension spring (408); when the tension rod (407) moves, it compresses the tension spring (408) inside, so that the tension sleeve (403) has an elastic adaptation compensation function.

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