High-voltage overhead line construction method
By using attitude controllers to control the pole in the construction of high-voltage overhead lines, the problem of pole shaking during the lifting process is solved, the construction stability and safety are improved, and the adhesions on the surface of the pole are removed.
Patent Information
- Application Number
- CN202510142556.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2025-05-13
AI Technical Summary
During the construction of high-voltage overhead lines, the poles are prone to shaking during the lifting process, which increases the construction difficulty and poses a high safety risk.
The attitude controller is adopted to clamp and fix the attitude controller and the pole through the air pump, and the pole is controlled through the attitude controller during the lifting process to suppress the swing of the pole.
It effectively suppresses the swing of the pole during lifting, improves the stability of the pole, and removes the adhesion on the surface of the pole through the attitude controller after the pole is fixed, improving the cleanliness after construction.
Smart Images
Figure CN119981519A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of overhead line construction, in particular to a high-voltage overhead line construction method. Background Art
[0002] High-voltage overhead lines have the advantages of large transmission capacity and long distance. They can efficiently transmit the electricity produced by power plants to substations in different regions, and then distribute it to various users from substations. Compared with other power transmission methods, such as underground cables, high-voltage overhead lines have significant advantages in construction costs and technical feasibility in long-distance and large-capacity transmission scenarios. During the construction of high-voltage overhead lines, after the foundation is poured, the poles need to be assembled. The poles are hoisted by cranes, tripods and other equipment. After one end of the pole is hoisted, since only the bottom of the pole is in contact with the ground foundation at this time, the upper part is pulled by the hoisting rope, lacking stable support, and is prone to shaking. The shaking of the pole during the hoisting process not only increases the difficulty of erecting the pole, but also has a high safety risk. Summary of the invention
[0003] The object of the present invention is to provide a high voltage overhead line construction method to solve the problems raised in the above background technology.
[0004] To achieve the above object, the present invention provides the following technical solution: a high voltage overhead line construction method, the method comprising the following steps: Step 1: Foundation construction: dig the foundation according to the design, pour the foundation with concrete, and wait for the foundation to solidify; Step 2: pole preparation: place the pole parallel to the ground so that the tail of the pole is on the foundation, and place the attitude controller on the upper end of the pole; Step 3: Install the pole. Supply air to the attitude controller through an air pump so that the attitude controller is clamped and fixed to the pole. Lift the upper end of the pole through a lifting device. During the lifting process, the attitude controller is used to control the attitude of the pole to suppress the swing of the pole. Step 4: Fix the pole. After the pole is hoisted vertically to the ground, the pole is connected and fixed to the foundation by bolts. The attitude controller is operated to slide down along the pole from top to bottom, the adhesion on the surface of the pole is removed, and the attitude controller is removed. Step 5: Install the insulator: lift the insulator to the top of the pole and install it; Step six, wire installation, install the wire on the insulator and tighten it.
[0005] The attitude controller includes a half-wrapped frame plate, a buffer gas tank fixedly arranged with the half-wrapped frame plate, and a gas control valve for opening and closing the gas; The gas control valve is arranged on the half-enclosed frame plate, and the compressed gas in the buffer gas tank is released through the gas control valve to generate a reaction force to control the posture of the half-enclosed frame plate; A semi-arc scraper is fixedly arranged on the semi-enclosed frame plate, and a dynamic arc plate is movably arranged on the semi-enclosed frame plate. The semi-arc scraper cooperates with the dynamic arc plate to embrace the electric pole.
[0006] A fixed clamping plate is symmetrically arranged inside the half-enclosed frame plate, a pressure air bag is arranged between the fixed clamping plate and the inner wall surface of the half-enclosed frame plate, and a bridge air passage interconnected with the pressure air bag is opened inside the half-enclosed frame plate; The half frame plate is provided with a track edge, and the fixed clamp plate is slidably limitedly matched with the track edge.
[0007] An inner solenoid valve is arranged between the bridge air path and the buffer gas tank, and an outer solenoid valve is arranged between the bridge air path and the outside atmosphere. The inner solenoid valve is used to control the on-off connection between the bridge air path and the buffer gas tank, and the outer solenoid valve is used to control the on-off connection between the bridge air path and the outside atmosphere.
[0008] The air control valve is connected with an injection pipe, and an output air pipe is connected between the buffer gas tank and the air control valve. When the air control valve is opened, compressed gas is ejected through the injection pipe to generate a reaction force.
[0009] The half-enclosed frame plate is symmetrically provided with a limit shell, and the dynamic arc plate telescopic limit is installed inside the limit shell; When the dynamic arc plate extends out from the limiting shell, the dynamic arc plate can cooperate with the semi-arc scraper to embrace the pole inside, so that when the attitude controller moves downward, the adhesion on the surface of the pole can be scraped off.
[0010] A driving shaft is fixedly arranged on the dynamic arc plate, a bidirectional wall tube is fixedly arranged on the semi-enclosed frame plate, an air gap is opened in the middle position of the bidirectional wall tube, a piston body is arranged in the bidirectional wall tube, the bidirectional wall tube and the piston body are in sealing contact, the driving shaft passes through the end position of the bidirectional wall tube and is in sealing contact with the end of the bidirectional wall tube, the driving shaft is fixedly installed with the piston body, a return spring is arranged on the side of the piston body away from the driving shaft, an arc plate air valve is arranged on the outside of the bidirectional wall tube, a wall tube outer tube is arranged between the arc plate air valve and the bidirectional wall tube, and the arc plate air valve is in communication with the buffer gas tank; When the arc plate air valve is opened, the compressed gas in the buffer gas tank enters the bidirectional wall tube through the outer tube of the wall tube, driving the piston body to move axially.
[0011] A support arm is fixedly provided on the inner wall surface of the buffer gas tank, and a limiting center axis is fixedly provided on the support arm. When the attitude controller is clamped and fixed to the pole, the limiting center axis and the pole are parallel to each other.
[0012] A counterweight block is sleeved on the outside of the limiting central axis, and the counterweight block can slide along the axial direction of the limiting central axis. A compression spring is arranged on one side of the counterweight block, and elastic pressure is applied to the counterweight block through the compression spring. A shifting groove is provided in the counterweight block.
[0013] A lifting plate is fixedly arranged in the shifting groove, and a rotating shifting frame is arranged in the buffer gas tank. When the rotating shifting frame rotates, the lifting plate can be moved to make the counterweight slide along the axial direction of the limiting central axis.
[0014] A worm wheel is coaxially fixedly mounted on the rotating frame, a worm is meshingly arranged on the outside of the worm wheel, a driving air pipe is fixedly arranged inside the buffer air tank, one end of the driving air pipe is connected to the outside, and the other end is connected to the inside of the buffer air tank, a fan blade shaft is rotatably arranged inside the driving air pipe, the fan blade shaft is transmission-installed with the worm, and a normally closed valve is arranged inside the driving air pipe.
[0015] The surface of the buffer gas tank is connected to a gas pipeline, and compressed gas is input into the buffer gas tank through the gas pipeline.
[0016] Compared with the prior art, the present invention has the following beneficial effects: The high-voltage overhead line construction method of the present invention can control the posture of the pole during the pole lifting process by cooperating with the set posture controller, thereby suppressing the swing of the pole and improving the stability of the pole during the lifting process. After the pole is fixed, the posture controller can be used to remove the adhesion on the surface of the pole, thereby improving the neatness of the pole after construction.
[0017] The attitude controller of the present invention cooperates with structures such as the counterweight block, the rotating rack and the driving air pipe, so that when the attitude controller falls and is recovered, the buffer gas tank can be deflated, and the attitude controller can generate impact vibration parallel to the pole, which can improve the falling smoothness of the attitude controller and reduce the probability of the attitude controller getting stuck during the sliding fall. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The present invention is a flow chart of the high-voltage overhead line construction method.
[0019] Figure 2 Schematic diagram of the attitude controller of the present invention.
[0020] Figure 3 This is a schematic diagram of the posture controller of the present invention from another angle.
[0021] Figure 4 It is a three-dimensional half-section schematic diagram of the ventilation path of the attitude controller bridge of the present invention.
[0022] Figure 5 It is a three-dimensional half-section schematic diagram of the attitude controller limiting the central axis of the present invention.
[0023] Figure 6 for Figure 5 A magnified schematic diagram of area A in the middle.
[0024] Figure 7 It is a three-dimensional half-section schematic diagram of the bidirectional wall tube of the attitude controller of the present invention.
[0025] Figure 8 It is a three-dimensional half-section schematic diagram of the driving trachea of the posture controller of the present invention.
[0026] Fig. 9 for Figure 8 Enlarged schematic diagram of area B in the middle.
[0027] In the figure: 1, half-wrapped frame plate; 2, buffer gas tank; 3, gas control valve; 4, half arc scraper; 5, dynamic arc plate; 101, fixed splint; 102, pressure air bag; 103, bridge air passage; 104, inner solenoid valve; 105, outer solenoid valve; 106, track edge; 301, jet pipe; 302, output air pipe; 501, limit shell; 502, drive shaft; 503, two-way wall pipe; 504, air gap; 505, piston body; 506, return spring; 507, wall tube outer tube; 508, arc plate air valve; 201, support arm; 202, limiting center axis; 203, counterweight; 204, compression spring; 205, pull slot; 206, lift pull plate; 207, rotate pull frame; 208, worm gear; 209, worm; 210, drive air pipe; 211, fan shaft; 212, normally closed valve; 213, gas pipeline. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] See also Figures 1 to 9 The present invention provides a technical solution: a high-voltage overhead line construction method, such as Figure 1 As shown in , the method comprises the following steps: Step 1: Foundation construction: excavate the foundation according to the design. The excavation size is generally 1.2m×1.2m×1.5m. Use C30 concrete to pour the foundation and wait for the foundation to solidify. Step 2: prepare the pole. The pole is a cylindrical hollow metal tube or cement tube. Place the pole parallel to the ground so that the tail of the pole is on the foundation, and place the attitude controller on the upper end of the pole. Step 3: Install the pole. Supply air to the attitude controller through an air pump so that the attitude controller is clamped and fixed to the pole. Lift the upper end of the pole through a lifting device. The lifting device can be a crane or a tripod with a winch. During the lifting process, the attitude controller is used to control the attitude of the pole to suppress the swing of the pole. Step 4: Fix the pole. After the pole is hoisted vertically to the ground, the pole is connected and fixed to the foundation by bolts. The attitude controller is operated to slide down along the pole from top to bottom, the adhesion on the surface of the pole is removed, and the attitude controller is removed. Step 5: Install the insulator: lift the insulator to the top of the pole and install it; Step six, wire installation, install the wire on the insulator and tighten it. The wire tension should meet the technical specifications, usually using an initial tension of 10% to 15%.
[0030] like Figure 2 As shown in , the attitude controller includes a half-wrapped frame plate 1, a buffer gas tank 2 fixedly arranged with the half-wrapped frame plate 1, and an air control valve 3 for opening and closing control of the gas; the air control valve 3 is arranged on the half-wrapped frame plate 1, and the compressed gas in the buffer gas tank 2 is released through the air control valve 3 to generate a reaction force to control the attitude of the half-wrapped frame plate 1; a half-arc scraper 4 is fixedly arranged on the half-wrapped frame plate 1, and a dynamic arc plate 5 is movably arranged on the half-wrapped frame plate 1, and a quarter arc edge is opened on the dynamic arc plate 5, and the half-arc scraper 4 cooperates with the dynamic arc plate 5 to embrace the pole, as shown in FIG. Figure 7 As shown in the figure, the semi-arc scraper 4 is a semi-arc, half-embracing the pole, and the dynamic arc plate 5 is in a retracted state, so that the pole can pass through the dynamic arc plate 5, which is convenient for the disassembly and assembly of the attitude controller. After the dynamic arc plate 5 is extended, it cooperates with the semi-arc scraper 4 to embrace the pole.
[0031] A fixed clamp 101 is symmetrically arranged inside the half-enclosed frame plate 1, a pressure airbag 102 is arranged between the fixed clamp 101 and the inner wall surface of the half-enclosed frame plate 1, and the pressure airbag 102 is made of rubber. A bridge ventilation path 103 interconnected with the pressure airbag 102 is opened inside the half-enclosed frame plate 1; a track edge 106 is arranged on the half-enclosed frame plate 1, and the fixed clamp 101 and the track edge 106 are slidably limited.
[0032] An inner solenoid valve 104 is provided between the bridge ventilation path 103 and the buffer gas tank 2, and an outer solenoid valve 105 is provided between the bridge ventilation path 103 and the outside atmosphere. The inner solenoid valve 104 is used to control the on-off connection between the bridge ventilation path 103 and the buffer gas tank 2, and the outer solenoid valve 105 is used to control the on-off connection between the bridge ventilation path 103 and the outside atmosphere.
[0033] The air control valve 3 is connected with an injection pipe 301 , and the buffer gas tank 2 and the air control valve 3 are connected with an output gas pipe 302 . When the air control valve 3 is opened, compressed gas is ejected through the injection pipe 301 to generate a reaction force.
[0034] A limit shell 501 is symmetrically arranged on the semi-enclosed frame plate 1, and the dynamic arc plate 5 is telescopically limited and installed inside the limit shell 501; when the dynamic arc plate 5 extends out from the limit shell 501, the dynamic arc plate 5 can cooperate with the semi-arc scraper 4 to embrace the pole inside, so that when the attitude controller moves downward, the adhesion on the surface of the pole can be scraped off.
[0035] A driving shaft 502 is fixedly arranged on the dynamic arc plate 5, a bidirectional wall tube 503 is fixedly arranged on the half-wrapped frame plate 1, an air gap 504 is opened in the middle position of the bidirectional wall tube 503, a piston body 505 is arranged in the bidirectional wall tube 503, the bidirectional wall tube 503 and the piston body 505 are in sealed contact, the driving shaft 502 passes through the end position of the bidirectional wall tube 503, and is in sealed contact with the end of the bidirectional wall tube 503, the driving shaft 502 and the piston body 505 are fixedly installed, a return spring 506 is arranged on the side of the piston body 505 away from the driving shaft 502, an arc plate air valve 508 is arranged on the outside of the bidirectional wall tube 503, a wall tube outer tube 507 is arranged between the arc plate air valve 508 and the bidirectional wall tube 503, the arc plate air valve 508 is connected to the buffer gas tank 2, and the setting of the air gap 504 can ensure that the air pressure on the side of the piston body 505 away from the driving shaft 502 is balanced when the piston body 505 moves; When the arc plate air valve 508 is opened, the compressed gas in the buffer gas tank 2 enters the bidirectional wall tube 503 through the wall tube outer tube 507, driving the piston body 505 to move axially.
[0036] A support arm 201 is fixedly provided on the inner wall surface of the buffer gas tank 2, and a limiting center axis 202 is fixedly provided on the support arm 201. When the attitude controller is clamped and fixed to the pole, the limiting center axis 202 and the pole are parallel to each other.
[0037] A counterweight block 203 is sleeved on the outside of the limiting central axis 202, and the counterweight block 203 can slide along the axial direction of the limiting central axis 202. A compression spring 204 is provided on one side of the counterweight block 203, and elastic pressure is applied to the counterweight block 203 through the compression spring 204. A shifting groove 205 is opened in the counterweight block 203.
[0038] A lifting plate 206 is fixedly provided in the shifting groove 205 , and a rotating shifting frame 207 is provided in the buffer gas tank 2 . When the rotating shifting frame 207 rotates, the lifting plate 206 can be moved to make the counterweight 203 slide along the axial direction of the limiting central axis 202 .
[0039] A worm gear 208 is coaxially fixedly installed on the rotating frame 207, and a worm 209 is meshingly arranged on the outside of the worm gear 208. A driving air pipe 210 is fixedly arranged inside the buffer gas tank 2. One end of the driving air pipe 210 is connected to the outside, and the other end is connected to the inside of the buffer gas tank 2. A fan shaft 211 is rotatably arranged inside the driving air pipe 210, and the fan shaft 211 is transmission-installed with the worm 209. A normally closed valve 212 is arranged inside the driving air pipe 210.
[0040] A gas pipeline 213 is provided on the surface of the buffer gas tank 2 , and compressed gas is input into the buffer gas tank 2 through the gas pipeline 213 .
[0041] When the attitude controller in the present invention is in use, an air pump is arranged on the ground, the air pump is connected to the gas pipeline 213 through an air pipe, and compressed gas is input into the buffer gas tank 2; when lifting one end of the pole, it is necessary to ensure that the axis of the lifting rope and the jet pipe 301 are arranged perpendicular to each other, and the verticality can be ensured by adjusting the clamping angle of the lifting rope or the attitude controller.
[0042] When compressed gas is cached in the cache gas tank 2, the inner solenoid valve 104 is controlled to open and the outer solenoid valve 105 is controlled to close. At this time, the compressed gas in the cache gas tank 2 enters the pressure air bag 102 through the inner solenoid valve 104 and the bridge air passage 103 in turn. The pressure air bag 102 expands and pushes the fixed clamps 101 on both sides to clamp and fix the pole. Then the inner solenoid valve 104 is controlled to close to keep the pressure air bag 102 in an expanded state and keep it clamped.
[0043] In the process of hoisting the pole, since the hoisting rope is flexible, the pole may swing left and right perpendicular to the hoisting rope. By controlling the air control valve 3 to open, the compressed gas in the buffer gas tank 2 is ejected through the jet pipe 301 to generate a reaction force, thereby suppressing the swing amplitude of the pole. In the above process, for the monitoring of the swing of the electric pole, in the first embodiment, the monitoring is realized by setting an acceleration sensor and a gyroscope sensor in the attitude controller; In the second embodiment, a camera is set up to shoot the ground and detect the displacement between the attitude controller and the ground, so as to monitor the swing of the pole; In the third embodiment, the worker visually observes the swing of the pole and controls the opening and closing of the gas-controlled valve 3 through the remote controller; The air control valve 3 is opened and closed by means of the above detection feedback, so that the reaction force generated by the air jet pipe 301 can suppress the swing of the pole during the lifting process. The specific control circuit will not be described in detail in this application.
[0044] When the pole is fixed vertically to the foundation, Figure 7 As shown in , the arc plate air valve 508 is controlled to be opened. At this time, the compressed gas in the buffer gas tank 2 enters the wall tube outer tube 507 through the arc plate air valve 508, and then enters the interior of the two-way wall tube 503 through the wall tube outer tube 507, pushing the piston body 505 to move axially, so that the drive shaft 502 and the dynamic arc plate 5 move toward the pole. At this time, the two groups of dynamic arc plates 5 are interlocked to form a semi-arc, which cooperates with the semi-arc of the semi-arc scraper 4 to embrace the pole.
[0045] The external solenoid valve 105 is controlled to open. At this time, the compressed gas in the pressure airbag 102 is ejected through the external solenoid valve 105, the fixed clamping plate 101 loses its clamping force, and the posture controller slides downward under the action of gravity. At this time, since the semi-arc scraper 4 and the dynamic arc plate 5 cooperate to embrace the pole, the adhesion on the surface of the pole can be scraped off through the cooperation of the semi-arc scraper 4 and the dynamic arc plate 5 during the falling process.
[0046] In the above process, if Fig. 9 As shown in FIG. 2 , the normally closed valve 212 is controlled to be opened, and the compressed gas in the buffer gas tank 2 is released and ejected outward through the driving air pipe 210. When the compressed air flows through the driving air pipe 210, the fan shaft 211 is driven to rotate, driving the worm 209 to rotate. The worm 209 drives the worm wheel 208 to rotate with a greater torque, and the worm wheel 208 drives the rotating rack 207 to rotate, as shown in FIG. Figure 6 As shown in , the counterweight 203 is moved upward intermittently by rotating the shifting frame 207, and the counterweight 203 is in an up and down reciprocating state, so that the attitude controller generates impact vibration parallel to the pole, which can improve the falling smoothness of the attitude controller.
[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high voltage overhead line construction method, characterized in that: The method comprises the following steps: Step 1: Foundation construction: dig the foundation according to the design, pour the foundation with concrete, and wait for the foundation to solidify; Step 2: pole preparation: place the pole parallel to the ground so that the tail of the pole is on the foundation, and place the attitude controller on the upper end of the pole; Step 3: Install the pole. Supply air to the attitude controller through an air pump so that the attitude controller is clamped and fixed to the pole. Lift the upper end of the pole through a lifting device. During the lifting process, the attitude controller is used to control the attitude of the pole to suppress the swing of the pole. Step 4: Fix the pole. After the pole is hoisted vertically to the ground, the pole is connected and fixed to the foundation by bolts. The attitude controller is operated to slide down along the pole from top to bottom, the adhesion on the surface of the pole is removed, and the attitude controller is removed. Step 5: Install the insulator: lift the insulator to the top of the pole and install it; Step six, wire installation, install the wire on the insulator and tighten it.
2. A high voltage overhead line construction method according to claim 1, characterized in that: The attitude controller includes a half-wrapped frame plate, a buffer gas tank fixedly arranged with the half-wrapped frame plate, and a gas control valve for opening and closing the gas; The gas control valve is arranged on the half-enclosed frame plate, and the compressed gas in the buffer gas tank is released through the gas control valve to generate a reaction force to control the posture of the half-enclosed frame plate; A semi-arc scraper is fixedly arranged on the semi-enclosed frame plate, and a dynamic arc plate is movably arranged on the semi-enclosed frame plate. The semi-arc scraper cooperates with the dynamic arc plate to embrace the electric pole.
3. A high voltage overhead line construction method according to claim 2, characterized in that: A fixed clamping plate is symmetrically arranged inside the half-enclosed frame plate, a pressure air bag is arranged between the fixed clamping plate and the inner wall surface of the half-enclosed frame plate, and a bridge air passage interconnected with the pressure air bag is opened inside the half-enclosed frame plate; The half frame plate is provided with a track edge, and the fixed clamp plate is slidably limitedly matched with the track edge.
4. A high voltage overhead line construction method according to claim 3, characterized in that: An inner solenoid valve is arranged between the bridge air path and the buffer gas tank, and an outer solenoid valve is arranged between the bridge air path and the outside atmosphere. The inner solenoid valve is used to control the on-off connection between the bridge air path and the buffer gas tank, and the outer solenoid valve is used to control the on-off connection between the bridge air path and the outside atmosphere.
5. A high voltage overhead line construction method according to claim 2, characterized in that: The air control valve is connected with an injection pipe, and an output air pipe is connected between the buffer gas tank and the air control valve. When the air control valve is opened, compressed gas is ejected through the injection pipe to generate a reaction force.
6. A high voltage overhead line construction method according to claim 2, characterized in that: The half-enclosed frame plate is symmetrically provided with a limit shell, and the dynamic arc plate telescopic limit is installed inside the limit shell; When the dynamic arc plate extends out from the limiting shell, the dynamic arc plate can cooperate with the semi-arc scraper to embrace the pole inside, so that when the attitude controller moves downward, the adhesion on the surface of the pole can be scraped off.
7. A high voltage overhead line construction method according to claim 6, characterized in that: A driving shaft is fixedly arranged on the dynamic arc plate, a bidirectional wall tube is fixedly arranged on the semi-enclosed frame plate, an air gap is opened in the middle position of the bidirectional wall tube, a piston body is arranged in the bidirectional wall tube, the bidirectional wall tube and the piston body are in sealing contact, the driving shaft passes through the end position of the bidirectional wall tube and is in sealing contact with the end of the bidirectional wall tube, the driving shaft is fixedly installed with the piston body, a return spring is arranged on the side of the piston body away from the driving shaft, an arc plate air valve is arranged on the outside of the bidirectional wall tube, a wall tube outer tube is arranged between the arc plate air valve and the bidirectional wall tube, and the arc plate air valve is in communication with the buffer gas tank; When the arc plate air valve is opened, the compressed gas in the buffer gas tank enters the bidirectional wall tube through the outer tube of the wall tube, driving the piston body to move axially.
8. A high voltage overhead line construction method according to claim 2, characterized in that: A support arm is fixedly provided on the inner wall surface of the buffer gas tank, and a limiting center axis is fixedly provided on the support arm. When the attitude controller is clamped and fixed to the pole, the limiting center axis and the pole are parallel to each other.
9. A high voltage overhead line construction method according to claim 8, characterized in that: A counterweight block is sleeved on the outside of the limiting central axis, and the counterweight block can slide along the axial direction of the limiting central axis. A compression spring is arranged on one side of the counterweight block, and elastic pressure is applied to the counterweight block through the compression spring. A shifting groove is provided in the counterweight block.
10. A high voltage overhead line construction method according to claim 9, characterized in that: A lifting plate is fixedly arranged in the shifting groove, and a rotating shifting frame is arranged in the buffer gas tank. When the rotating shifting frame rotates, the lifting plate can be moved to make the counterweight slide along the axial direction of the limiting central axis.
11. A high voltage overhead line construction method according to claim 10, characterized in that: A worm wheel is coaxially fixedly mounted on the rotating frame, a worm is meshingly arranged on the outside of the worm wheel, a driving air pipe is fixedly arranged inside the buffer air tank, one end of the driving air pipe is connected to the outside, and the other end is connected to the inside of the buffer air tank, a fan blade shaft is rotatably arranged inside the driving air pipe, the fan blade shaft is transmission-installed with the worm, and a normally closed valve is arranged inside the driving air pipe.
12. A high voltage overhead line construction method according to claim 2, characterized in that: The surface of the buffer gas tank is connected to a gas pipeline, and compressed gas is input into the buffer gas tank through the gas pipeline.