Wire tightening device for extra-high voltage overhead line installation

Abstract

The invention relates to the technical field of wire tightening, and discloses a wire tightening device for extra-high voltage overhead line installation, which comprises a bottom plate, two support plates are fixedly connected to the upper surface of the bottom plate, snow removal mechanisms are arranged on the sides, close to each other, of the two support plates, and a lubrication maintenance mechanism is arranged on the upper surface of each support plate. The wire tightening device comprises a bottom plate, a wire tightening mechanism is arranged above the bottom plate and comprises four wire tightening lug plates, the four wire tightening lug plates are fixedly connected to the upper surface of the bottom plate, every two of the four wire tightening lug plates form a group, a pulley is rotationally connected between each group of wire tightening lug plates, guide frames are fixedly connected to the two sides of the upper surface of the bottom plate, and the guide frames are fixedly connected to the two sides of the upper surface of the bottom plate. The guide device has the primary function of tensioning a wire, ensuring that the wire keeps proper tension in the installation process, and preventing the wire from drooping or deforming due to looseness, so that the stability and the safety of a circuit are kept.

Description

Technical Field

[0001] The invention relates to the technical field of line tightening, in particular to a line tightening device used for installing ultra-high voltage overhead lines. Background Art

[0002] Overhead lines are power or telecommunication transmission lines erected above the ground. Overhead lines mainly use insulators to fix the transmission wires on the towers erected on the ground to transmit electric energy. It includes main components such as wires, lightning arresters, towers, insulators, and hardware. Overhead lines are easy to erect and maintain, with low costs and short construction periods. They are easily affected by weather and environment and cause failures. They are easy to cause electromagnetic interference to the surrounding environment and have safety hazards. When choosing to use overhead lines, it is also necessary to consider their potential disadvantages and risks and take corresponding measures to reduce these effects. In summer, the wires need to be loose during installation. However, since the loose wires are greatly affected by wind and the external environment, they are prone to power supply failures. After the wires are installed, the tension adjustment of the tensioning device can provide protection for long-term operation, ensuring that the wires will not have excessive tension fluctuations due to factors such as temperature changes in subsequent operations.

[0003] The patent with announcement number CN209642180U proposes an intelligent tightening device for installing overhead power lines, including a mounting base, the upper surface of the mounting base is respectively provided with a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate are symmetrically arranged with the central axis of the mounting base as the symmetry axis, the upper part of the side surface of the first mounting plate is provided with a first wire hole, the side surface of the second mounting plate is provided with a second wire hole, and the side surfaces opposite to the first mounting plate and the second mounting plate are both provided with tightening devices. The intelligent tightening device for installing overhead power lines can intelligently tighten or loosen the overhead wires according to the temperature, so that the overhead wires are always in a suitable tightness, thereby reducing the impact of wind and external environment on the wires and reducing the incidence of power supply failures. However, the existing tightening device for installing UHV overhead lines is also prone to appear in snowy weather. Snow accumulation on the high-voltage line will increase the force on the high-voltage line, which may cause the outer insulation layer of the cable to freeze and crack. Therefore, it is necessary to design a tightening device for installing UHV overhead lines. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a line tightening device for installing an ultra-high voltage overhead line, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a tensioning device for installing UHV overhead lines, comprising a base plate, wherein two support plates are fixedly connected to the upper surface of the base plate, a snow removal mechanism is provided on the mutually close sides of the two support plates, a lubrication maintenance mechanism is provided on the upper surface of each support plate, a tensioning mechanism is provided above the base plate, the tensioning mechanism comprises four tensioning ear plates, the four tensioning ear plates are fixedly connected to the upper surface of the base plate, the four tensioning ear plates are grouped in twos, and a pulley is rotatably connected between each group of tensioning ear plates, guide frames are fixedly connected to both sides of the upper surface of the base plate, a guide plate is provided at the upper end of each guide frame, a guide spring is provided on the front and rear sides of each guide frame, and the two ends of each guide spring are respectively fixedly connected to the base plate and the guide plate, a lower pressure column is fixedly connected between the two guide plates, a buffer spring is provided on the outer surface of the lower pressure column, and the two ends of the buffer spring are respectively fixedly connected to the lower pressure column and the lower pressure plate, a bidirectional threaded rod is rotatably connected between the two support plates, and the bidirectional threaded rod The two ends of the two-way threaded rod are threadedly connected with a threaded sleeve, and each of the two sides of the threaded sleeve is provided with a hinge rod, and the two ends of the hinge rod are hingedly connected to the threaded sleeve and the lower pressure column respectively. The external motor is started to drive the two-way threaded rod to rotate. The rotation of the two-way threaded rod can drive the threaded sleeve to move in opposite directions, so that the lower pressure column connected by the hinged rod slowly moves downward, and at the same time, the guide plates connected at both ends of the lower pressure column move downward along the guide frame. The elastic force of the guide spring makes the downward movement of the lower pressure column more stable. The downward moving lower pressure column forces the lower pressure plate to push the cable on the pulley to make the cable move synchronously. The downward movement of the cable increases the tension of the entire cable, tightens the cable, and achieves the effect of tightening the cable. At the same time, during the process of tightening the cable, under the action of the buffer spring, the lower pressure plate always pushes the cable. When the length of the buffer spring is at the minimum value and the cable tension reaches the maximum value, at this time, the cable is in the tightest state within the tension safety value. The primary function of the device is to tighten the wire to ensure that it maintains appropriate tension during installation to prevent the wire from sagging or deformation due to relaxation, thereby maintaining the stability and safety of the line.

[0006] According to the above technical solution, the snow removal mechanism includes two support blocks and a protrusion, and the two support blocks are respectively fixedly connected to the side of the two support plates away from the guide plate (305); the support block is slidably connected to a sliding column inside, and the outer surface of the sliding column is fixedly connected to a clamping ring, and the upper end of the sliding column is fixedly connected to a clamping plate; the end of the sliding column away from the clamping plate is fixedly connected to a connecting plate, and the lower surface of the connecting plate is fixedly connected to a bell; the protrusion is fixedly connected to the outer surface of the bidirectional threaded rod, and the lower surface of the clamping ring is provided with a reset spring, and the two ends of the reset spring are respectively fixedly connected to the clamping ring and the support block, and a reset spring is provided inside the support block. The receiving groove of the spring is deformed, and the external motor is started to rotate the bidirectional threaded rod. At the same time, the protrusion on the bidirectional threaded rod will intermittently squeeze the sliding column, and then the reset spring will reset the sliding column, and finally the end of the sliding column will intermittently hit the cable, so that the snow will fall from the cable. At the same time, the up and down repeated movement of the sliding column can make the connecting plate connected to the end of the sliding column move up and down, and finally the bell connected to the bottom of the connecting plate will shake, and then produce a sound, which can drive away the birds that landed on the cable. The above process can make the snow fall from the cable and drive away the birds that landed on the cable, further improving the stability and safety of the power supply; According to the above technical solution, the lubrication maintenance mechanism includes a maintenance ear plate, the maintenance ear plate is fixedly connected to the upper surface of the support plate, the maintenance ear plate is hinged with a first lever inside, the first lever is hingedly connected to a connecting frame at one end away from the support plate, the upper surface of the support plate is fixedly connected with a rain shelter, the two support plates are fixedly connected to a storage box on one side close to each other, the bottom surface of the inner wall of the storage box is fixedly connected with a baffle frame, the baffle frame is slidably connected with a movable baffle inside, one inner wall of the storage box is fixedly connected with a support plate, and the upper surface of the support plate is fixedly connected with a support ear The support ear plate is hingedly connected with a second lever, the upper surface of the storage box is fixedly connected with a rainproof frame, the lower surface of the movable baffle is provided with a switch spring, and the two ends of the switch spring are respectively fixedly connected to the movable baffle and the bottom plate, the outer surface of the storage box is provided with a hose, and the two ends of the hose are respectively fixedly connected to the storage box and the threaded sleeve, the threaded sleeve is provided with a flow groove for providing lubricating liquid flow, the two ends of the second lever are respectively in contact with the movable baffle and the short end of the first lever, the upper surface of the storage box is provided with a moving groove for providing movement of the second lever, and the equipment is in a naked state. When the two-way threaded rod is exposed, it will be corroded over time and the movement of the threaded sleeve will be hindered. When the external motor is started to rotate the two-way threaded rod, the protrusion on the two-way threaded rod will intermittently squeeze the sliding column, and then the reset spring will reset the sliding column, and finally the connecting frame on the sliding column will move up and down. The downward movement of the connecting frame will pull the first lever to rotate around the maintenance ear plate. At this time, the long end of the first lever moves downward, and the short end of the first lever moves downward. When the short end of the first lever moves downward, the short end will push against one end of the second lever, causing the second lever to rotate around the support The ear plate rotates. At this time, the other end of the second lever will press the movable baffle to move downward along the baffle frame, eventually causing the through hole to leak. Then the lubricating liquid stored in the storage box will flow into the threaded sleeve along the hose, and the bidirectional threaded rod will be evenly lubricated during the movement of the threaded sleeve, so that the movement of the threaded sleeve is no longer affected. Rust will increase friction, affect the operating efficiency of the moving parts, and may even cause jamming or damage. The above process can lubricate the threaded sleeve and the bidirectional threaded rod. Maintenance lubrication is beneficial to maintaining the smoothness of the threaded sleeve and the bidirectional threaded rod, reducing wear, and improving their performance and stability.

[0007] The present invention provides a tensioning device for installing an ultra-high voltage overhead line, which has the following beneficial effects: The present invention arranges a tightening ear plate, a pulley, a guide frame, a guide spring, a guide plate, a lower pressure column, a hinged rod, a threaded sleeve, a bidirectional threaded rod, and a lower pressure plate, so that the lower pressure plate pushes the cable at all times. When the length of the buffer spring is at a minimum value and the cable tension reaches a maximum value, the cable is in the tightest state within the tension safety value. The primary function of the device is to tighten the wire to ensure that it maintains appropriate tension during the installation process and prevent the wire from sagging or deformation due to relaxation, thereby maintaining the stability and safety of the line.

[0008] The present invention arranges a support block, a sliding column, a clamping ring, a clamping plate, a protrusion, a connecting plate, and a bell, so that the end of the sliding column intermittently knocks the cable, thereby causing the accumulated snow to fall from the cable. At the same time, the repeated up and down movement of the sliding column can cause the connecting plate connected to the end of the sliding column to move up and down, and finally cause the bell connected to the bottom of the connecting plate to shake, thereby generating a sound, which can drive away birds that have landed on the cable and prevent the acidic feces of the birds from corroding metal parts. The above process can cause the accumulated snow to fall from the cable and drive away the birds that have landed on the cable, thereby further improving the stability and safety of the power supply.

[0009] The present invention arranges the maintenance ear plate, the first lever, the connecting frame, the rain shelter frame, the rain shield frame, the storage box, the baffle frame, the movable baffle, the second lever, the supporting ear plate, the supporting plate, and the hose so that the lubricating liquid in the storage box will flow into the threaded sleeve along the hose, and the bidirectional threaded rod will be evenly lubricated during the movement of the threaded sleeve, so that the movement of the threaded sleeve is no longer affected. Rust will increase friction, affect the operating efficiency of the moving parts, and may even cause jamming or damage. The above process can lubricate the threaded sleeve and the bidirectional threaded rod, and maintenance lubrication is beneficial to maintaining the smoothness of the threaded sleeve and the bidirectional threaded rod, reducing wear, and improving their performance and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall positive three-axis three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the overall rear-view stereoscopic structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the tightening mechanism of the present invention; Figure 4 It is a schematic diagram of the connection structure of the tightening ear plate of the present invention; Figure 5 It is a structural schematic diagram of the snow removal mechanism of the present invention; Figure 6 It is a structural schematic diagram of the lubrication maintenance mechanism of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of A.

[0011] In the figure: 1. bottom plate; 2. support plate; 3. tightening mechanism; 301. tightening ear plate; 302. pulley; 303. guide frame; 304. guide spring; 305. guide plate; 306. lower pressure column; 307. hinged rod; 308. threaded sleeve; 309. two-way threaded rod; 310. lower pressure plate; 4. snow removal mechanism; 401. support block; 402. sliding column; 403. snap ring; 404. card plate; 405. bump; 406. connecting plate; 407. bell; 5. lubrication and maintenance mechanism; 501. maintenance ear plate; 502. first lever; 503. connecting frame; 504. rain shelter frame; 505. rain shield frame; 506. storage box; 507. baffle frame; 508. movable baffle; 509. second lever; 510. support ear plate; 511. support plate; 512. hose. DETAILED DESCRIPTION

[0012] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0013] See also Figure 1-7An embodiment of the present invention is: a tensioning device for installing an ultra-high voltage overhead line, comprising a base plate 1, two support plates 2 are fixedly connected to the upper surface of the base plate 1, a snow removal mechanism 4 is provided on the side of the two support plates 2 close to each other, and a lubrication maintenance mechanism 5 is provided on the upper surface of each support plate 2. A tensioning mechanism 3 is provided above the bottom plate 1, and the tensioning mechanism 3 includes four tensioning ear plates 301, the four tensioning ear plates 301 are fixedly connected to the upper surface of the bottom plate 1, and the four tensioning ear plates (301) are grouped in pairs, and a pulley 302 is rotatably connected between each group of tensioning ear plates 301, and guide frames 303 are fixedly connected to both sides of the upper surface of the bottom plate 1, and a guide plate 305 is provided at the upper end of each guide frame 303, and guide springs 304 are provided on the front and rear sides of each guide frame 303, and the two ends of each guide spring 304 are respectively fixedly connected to the bottom plate 1 and the guide plate 305, and a lower pressure column 306 is fixedly connected between the two guide plates 305, and a buffer spring is provided on the outer surface of the lower pressure column 306, and the two ends of the buffer spring are respectively fixedly connected to the lower pressure column 306 and the lower pressure plate 310, and the two support plates 2 are connected to each other. A bidirectional threaded rod 309 is rotatably connected, and both ends of the bidirectional threaded rod 309 are threadedly connected with a threaded sleeve 308. A hinge rod 307 is arranged on both sides of each threaded sleeve 308, and both ends of the hinge rod 307 are respectively hingedly connected to the threaded sleeve 308 and the lower pressure column 306. The downward movement of the cable increases the tension of the entire cable, tightens the cable, and achieves the effect of tightening the cable. At the same time, during the tightening process of the cable, under the action of the buffer spring, the lower pressure plate 310 pushes the cable all the time. When the length of the buffer spring is at the minimum value and the cable tension reaches the maximum value, the cable is in the tightest state within the tension safety value. The primary function of the device is to tighten the wire to ensure that it maintains appropriate tension during the installation process, and prevent the wire from sagging or deformation due to relaxation, thereby maintaining the stability and safety of the line. The snow removal mechanism 4 includes two support blocks 401 and a protrusion 405. The two support blocks 401 are respectively fixedly connected to the side of the two support plates 2 away from the guide plate (305). The interior of the support block 401 is slidably connected to a sliding column 402, and the outer surface of the sliding column 402 is fixedly connected to a clamping ring 403. The upper end of the sliding column 402 is fixedly connected to a clamping plate 404. The end of the sliding column 402 away from the clamping plate 404 is fixedly connected to a connecting plate 406, and the lower surface of the connecting plate 406 is fixedly connected to a bell 407. The protrusion 405 is fixedly connected to the outer surface of the bidirectional threaded rod 309. The clamping ring 403 is fixedly connected to the outer surface of the bidirectional threaded rod 309. A return spring is provided on the lower surface, and the two ends of the return spring are fixedly connected to the clamp ring 403 and the support block 401 respectively. A receiving groove for the return spring to deform is provided inside the support block 401. The up and down repeated movement of the sliding column 402 can make the connecting plate 406 connected to the end of the sliding column 402 move up and down, and finally make the bell 407 connected to the bottom of the connecting plate 406 shake, thereby generating a sound, which can drive away the birds that landed on the cable. The above process can make the snow fall from the cable and drive away the birds that landed on the cable, further improving the stability and safety of the power supply; The lubrication maintenance mechanism 5 includes a maintenance ear plate 501, which is fixedly connected to the upper surface of the support plate 2. The maintenance ear plate 501 is hinged with a first lever 502 inside, and the end of the first lever 502 away from the support plate 2 is hingedly connected to a connecting frame 503, and the upper surface of the support plate 2 is fixedly connected to a rain shelter frame 504, and the sides of the two support plates 2 close to each other are fixedly connected to storage boxes 506, and the bottom surface of the inner wall of the storage box 506 is fixedly connected to a baffle frame 507, and the baffle frame 507 is slidably connected to a movable baffle 508, and the inner wall of one side of the storage box 506 is fixedly connected to a support plate 511. The upper surface of the support plate 511 is fixedly connected with a support ear plate 510, and the support ear plate 510 is hingedly connected with a second lever 509. The upper surface of the storage box 506 is fixedly connected with a rain shield frame 505. The lower surface of the movable baffle 508 is provided with a switch spring, and the two ends of the switch spring are respectively fixedly connected to the movable baffle 508 and the bottom plate 1. The outer surface of the storage box 506 is provided with a hose 512, and the two ends of the hose 512 are respectively fixedly connected to the storage box 506 and the threaded sleeve 308. A flow groove for providing lubricating fluid flow is provided inside the threaded sleeve 308. The two ends of the second lever 509 are respectively connected to the movable baffle. 508 and the short end of the first lever 502 fit together, and a moving groove for providing movement of the second lever 509 is opened on the upper surface of the storage box 506. The downward movement of the connecting frame 503 will pull the first lever 502 to rotate around the maintenance ear plate 501. At this time, the long end of the first lever 502 moves downward, and the short end of the first lever 502 moves downward. When the short end of the first lever 502 moves downward, the short end will press against one end of the second lever 509, so that the second lever 509 rotates around the supporting ear plate 510. At this time, the other end of the second lever 509 will press the moving baffle 508 along the baffle The frame 507 moves downward, eventually causing the through hole to leak, and then the lubricating liquid stored in the storage box 506 will flow into the threaded sleeve 308 along the hose 512, and the bidirectional threaded rod 309 will be evenly lubricated during the movement of the threaded sleeve 308, so that the movement of the threaded sleeve 308 is no longer affected. Rust will increase friction, affect the operating efficiency of the moving parts, and may even cause jamming or damage. The above process can lubricate the threaded sleeve 308 and the bidirectional threaded rod 309, and maintenance lubrication is beneficial to maintaining the smoothness of the threaded sleeve 308 and the bidirectional threaded rod 309, reducing wear and tear, and improving their performance and stability.

[0014] Working principle: After the equipment is installed, the external motor is started to drive the bidirectional threaded rod 309 to rotate. The rotation of the bidirectional threaded rod 309 can drive the threaded sleeve 308 to move toward each other, so that the lower pressure column 306 connected by the hinge rod 307 moves slowly downward, and at the same time, the guide plate 305 connected to the two ends of the lower pressure column 306 moves downward along the guide frame 303. The elastic force of the guide spring 304 makes the downward movement of the lower pressure column 306 more stable. The downward moving lower pressure column 306 forces the lower pressure plate 310 to push the cable on the pulley 302 to make the cable move synchronously. The downward movement of the cable increases the tension of the entire cable, tightens the cable, and achieves the effect of tightening the cable. At the same time, during the process of tightening the cable, under the action of the buffer spring, the lower pressure plate 310 pushes the cable all the time. When the length of the buffer spring is at the minimum value and the cable tension reaches the maximum value, the cable is in the tightest state within the tension safety value. The primary function of the device is to tighten the wire to ensure that it maintains appropriate tension during the installation process to prevent the wire from sagging or deformation due to relaxation, thereby maintaining the stability and safety of the line. When the external motor is started to rotate the bidirectional threaded rod 309, the protrusion 405 on the bidirectional threaded rod 309 will intermittently squeeze the sliding column 402, and then the reset spring will reset the sliding column 402, and finally the end of the sliding column 402 will intermittently hit the cable, so that the snow will fall from the cable. At the same time, the up and down repeated movement of the sliding column 402 can make the connecting plate 406 connected to the end of the sliding column 402 move up and down, and finally make the bell 407 connected to the bottom of the connecting plate 406 shake, and then produce a sound, which can drive away the birds that landed on the cable. The above process can make the snow fall from the cable and drive away the birds that landed on the cable, further improving the stability and safety of the power supply; When the equipment is in an exposed state, the bidirectional threaded rod 309 will be corroded over time, which will hinder the movement of the threaded sleeve 308. When the external motor is started to rotate the bidirectional threaded rod 309, the protrusion 405 on the bidirectional threaded rod 309 will intermittently squeeze the sliding column 402, and then the reset spring will reset the sliding column 402, and finally the connecting frame 503 on the sliding column 402 will move up and down. The downward movement of the connecting frame 503 will pull the first lever 502 to rotate around the maintenance ear plate 501. At this time, the long end of the first lever 502 moves downward, and the short end of the first lever 502 moves downward. When the short end of the first lever 502 moves downward, the short end will push against one end of the second lever 509, so that the second lever The rod 509 rotates around the supporting ear plate 510. At this time, the other end of the second lever 509 will press the movable baffle 508 to move downward along the baffle frame 507, eventually causing the through hole to leak. Subsequently, the lubricating fluid stored in the storage box 506 will flow into the threaded sleeve 308 along the hose 512. During the movement of the threaded sleeve 308, the bidirectional threaded rod 309 is evenly lubricated so that the movement of the threaded sleeve 308 is no longer affected. Rust will increase friction, affect the operating efficiency of the moving parts, and may even cause jamming or damage. The above process can lubricate the threaded sleeve 308 and the bidirectional threaded rod 309. Maintenance lubrication is beneficial to maintaining the smoothness of the threaded sleeve 308 and the bidirectional threaded rod 309, reducing wear and tear, and improving their performance and stability.

[0015] 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. A tensioning device for installing an ultra-high voltage overhead line, comprising a base plate (1), characterized in that: Two support plates (2) are fixedly connected to the upper surface of the bottom plate (1); a snow removal mechanism (4) is provided on the side of the two support plates (2) close to each other; a lubrication maintenance mechanism (5) is provided on the upper surface of each support plate (2); and a tensioning mechanism (3) is provided above the bottom plate (1); The tightening mechanism (3) comprises four tightening ear plates (301), the four tightening ear plates (301) are fixedly connected to the upper surface of the base plate (1), the four tightening ear plates (301) are arranged in groups of two, and a pulley (302) is rotatably connected between each group of tightening ear plates (301), both sides of the upper surface of the base plate (1) are fixedly connected to guide frames (303), the upper end of each guide frame (303) is provided with a guide plate (305), the front and rear sides of each guide frame (303) are provided with guide springs (304), and the two ends of each guide spring (304) are respectively fixedly connected to the base plate (1) and the guide plate (305), and a downward pressure column (306) is fixedly connected between the two guide plates (305).

2. A tensioning device for installing an ultra-high voltage overhead line according to claim 1, characterized in that: A buffer spring is provided on the outer surface of the lower pressure column (306), and the two ends of the buffer spring are respectively fixedly connected to the lower pressure column (306) and the lower pressure plate (310), and a bidirectional threaded rod (309) is rotatably connected between the two support plates (2).

3. A tensioning device for installing an ultra-high voltage overhead line according to claim 2, characterized in that: Both ends of the bidirectional threaded rod (309) are threadedly connected to threaded sleeves (308), and both sides of each threaded sleeve (308) are provided with hinged rods (307), and both ends of the hinged rods (307) are respectively hingedly connected to the threaded sleeves (308) and the lower pressure column (306).

4. A tensioning device for installing an ultra-high voltage overhead line according to claim 3, characterized in that: The snow removal mechanism (4) comprises two support blocks (401) and a protrusion (405). The two support blocks (401) are respectively fixedly connected to the side of the two support plates (2) away from the guide plate (305). The interior of the support block (401) is slidably connected to a sliding column (402), the outer surface of the sliding column (402) is fixedly connected to a clamping ring (403), the upper end of the sliding column (402) is fixedly connected to a clamping plate (404), the end of the sliding column (402) away from the clamping plate (404) is fixedly connected to a connecting plate (406), the lower surface of the connecting plate (406) is fixedly connected to a bell (407), and the protrusion (405) is fixedly connected to the outer surface of the bidirectional threaded rod (309).

5. A tensioning device for installing an ultra-high voltage overhead line according to claim 4, characterized in that: A return spring is provided on the lower surface of the snap ring (403), and two ends of the return spring are respectively fixedly connected to the snap ring (403) and the support block (401), and an accommodating groove for deformation of the return spring is provided inside the support block (401).

6. A tensioning device for installing an ultra-high voltage overhead line according to claim 5, characterized in that: The lubrication maintenance mechanism (5) comprises a maintenance ear plate (501), wherein the maintenance ear plate (501) is fixedly connected to the upper surface of the support plate (2), a first lever (502) is hingedly connected inside the maintenance ear plate (501), an end of the first lever (502) away from the support plate (2) is hingedly connected to a connecting frame (503), and a rain shelter frame (504) is fixedly connected to the upper surface of the support plate (2).

7. A tensioning device for installing an ultra-high voltage overhead line according to claim 6, characterized in that: A storage box (506) is fixedly connected to one side of the two support plates (2) that are close to each other; a baffle frame (507) is fixedly connected to the bottom surface of the inner wall of the storage box (506); a movable baffle (508) is slidably connected inside the baffle frame (507); a support plate (511) is fixedly connected to the inner wall of one side of the storage box (506); a support ear plate (510) is fixedly connected to the upper surface of the support plate (511); a second lever (509) is hingedly connected to the upper surface of the support ear plate (510); and a rain shield frame (505) is fixedly connected to the upper surface of the storage box (506).

8. A tensioning device for installing an ultra-high voltage overhead line according to claim 7, characterized in that: A switch spring is provided on the lower surface of the movable baffle (508), and two ends of the switch spring are respectively fixedly connected to the movable baffle (508) and the bottom plate (1); a hose (512) is provided on the outer surface of the storage box (506), and two ends of the hose (512) are respectively fixedly connected to the storage box (506) and the threaded sleeve (308); a flow groove for providing lubricating liquid flow is provided inside the threaded sleeve (308); two ends of the second lever (509) are respectively in contact with the movable baffle (508) and the short end of the first lever (502); and a moving groove for providing movement of the second lever (509) is provided on the upper surface of the storage box (506).

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