Wiring mechanism of long-distance power transmission line

Abstract

The utility model relates to a stringing mechanism of a long-distance power transmission line, the stringing mechanism comprises a pay-off part and a wire arranging part, the pay-off part comprises two supporting vertical frames, and the two supporting vertical frames are connected through a front end cross beam group, a bottom cross beam group and a wire coil bearing; each supporting vertical frame comprises an upper transverse support, a lower transverse support, a front inclined support, a rear inclined support and a front vertical support, the two ends of each rear inclined support are fixedly connected with one end of the corresponding upper transverse support and one end of the corresponding lower transverse support respectively, the other end of each upper transverse support is fixedly connected with one end of the corresponding front inclined support, and the other end of each lower transverse support is fixedly connected with one end of the corresponding front vertical support. And the other end of the front vertical support is fixedly connected with the other end of the front inclined support. Through the mutual cooperation of the supporting vertical frame, the front end cross beam group, the bottom cross beam group and the wire coil bearing, the wiring mechanism is modularized, so that the maneuverability of the wiring mechanism is effectively improved, meanwhile, a large-tonnage pay-off reel used in the long-distance power transmission line construction process is better supported, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power transmission line construction, and more specifically to a wire-laying mechanism for a long-distance power transmission line. Background Art

[0002] Power transmission lines are a vital component of the power system. They are directly related to the transmission and distribution efficiency of electricity, which makes the construction process of transmission lines particularly important. Therefore, people have invented wire construction technology to complete the construction of transmission lines, which is an important prerequisite and guarantee for the construction of ultra-high voltage and various levels of power grids.

[0003] The wire construction technology is a construction method that applies tension to the transmission line under construction so that the transmission line is off the ground and in an overhead state. With the development of the electric power industry and the further expansion of the power grid capacity, the large-section conductors used in EHV or UHV transmission line projects have become an inevitable direction for the planning and design of my country's power grid. At the same time, with the increasingly obvious trend of power construction extending to mountainous and remote areas, the number of long-distance spanning construction has increased, which inevitably causes the volume of the traction rope to increase accordingly, resulting in a significant increase in the overall tonnage of the traction rope. The existing rope drum for storing the traction rope is relatively small, and the existing pay-off frame cannot meet the effective support of the traction rope and the rope drum under the background of long-distance construction. At the same time, in the prior art, the wire rack used to assist in the storage of the traction rope cannot effectively help the traction rope to be evenly wound on the rope drum. Therefore, in the entire construction process, higher requirements are placed on the equipment used in the wire construction technology.

[0004] Therefore, there is an urgent need for a wire-laying mechanism that can effectively support the traction rope during the construction of the transmission line under the background of long-distance construction, and at the same time ensure that the traction rope can be evenly wound on the rope drum to ensure the smooth operation of the transmission line construction process under long-distance construction. Utility Model Content

[0005] The purpose of the utility model is to provide a wiring mechanism for a long-distance power transmission line to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a long-distance transmission line stringing mechanism, including a wire-laying part, the wire-laying part includes two support frames, the front ends of the two support frames are connected by a front crossbeam group; the rear ends of the two support frames are connected by a bottom crossbeam group; the tops of the two support frames are connected by a wire drum bearing;

[0007] Each supporting frame includes an upper cross brace, a lower cross brace, a front diagonal brace, a rear diagonal brace and a front vertical brace. The two ends of the rear diagonal brace are respectively fixedly connected to one end of the upper cross brace and the lower cross brace, the other end of the upper cross brace is fixedly connected to one end of the front diagonal brace, the other end of the lower cross brace is fixedly connected to one end of the front vertical brace, and the other end of the front vertical brace is fixedly connected to the other end of the front diagonal brace.

[0008] Furthermore, a support portion is provided in the space surrounded by each support stand, each support portion includes a first support rod and a second support rod, and the first support rod and the second support rod are arranged in an X shape;

[0009] The first support rod and the second support rod are integrally formed, and the four ends of the support portion are fixedly connected to the side walls of the space surrounded by the corresponding support frames.

[0010] Furthermore, the front end cross beam group includes two front cross braces, the two front cross braces are connected by a plurality of cross brace columns, the two ends of each cross brace column are respectively fixedly connected to the two front cross braces, and the two ends of the two front cross braces are respectively connected to the two front columns;

[0011] Two first connection parts are fixedly connected from top to bottom to the opposite side surfaces of the two front vertical supports. The two first connection parts located at the top are respectively detachably fixedly connected to the two ends of a front cross support; the two first connection parts located at the bottom are respectively detachably fixedly connected to the two ends of another front cross support.

[0012] Furthermore, the bottom cross beam group includes a plurality of rear cross braces, and two adjacent rear cross braces are connected by a plurality of connecting columns, and both ends of each connecting column are respectively fixedly connected to the two rear cross braces;

[0013] The surfaces on the opposite sides of the two lower cross braces are fixedly connected with second connecting parts corresponding to each rear cross brace, and each second connecting part is respectively detachably fixedly connected to two ends of the corresponding rear cross brace.

[0014] Furthermore, the wire drum bearing includes support blocks which are detachably mounted on the two upper cross braces, a rotary rod is provided between the two support blocks, and two ends of the rotary rod are rotatably connected to the two support blocks respectively.

[0015] Furthermore, the wire racking mechanism also includes a wire racking part, which includes a wire racking body and a T-shaped lead screw installed on the wire racking body, a lead screw nut is sleeved and threadedly connected on the T-shaped lead screw, and a wire racking roller is installed on the lead screw nut;

[0016] The wire rack body includes two trapezoidal side frames, a first fixing column and a second fixing column are respectively provided between the two oblique sides of the two side frames, a third connecting part is respectively fixedly connected to the opposite surfaces of the two first fixing columns and the opposite surfaces of the two second fixing columns, a connecting rod is provided between each pair of third connecting parts, and the two ends of each connecting rod are respectively detachably fixedly connected to the corresponding third connecting parts.

[0017] Furthermore, a limit block is fixedly connected to the upper cross arms of the two side frames, and the two ends of the T-shaped lead screw are rotatably connected to the two limit blocks respectively;

[0018] A plurality of limit plates are arranged between the upper cross arms of the two side frames, and the surfaces of the limit plates are all in contact with the lead screw nuts.

[0019] Furthermore, one end of the T-shaped lead screw is fixedly connected to a first transmission shaft, and one end of the first transmission shaft away from the T-shaped lead screw passes through the limit block and is fixedly connected to a second gear;

[0020] A driving motor is fixedly connected to the first fixing column, a first gear is sleeved and fixedly connected to the output shaft of the driving motor, and the second gear is connected to the first gear through a first transmission chain.

[0021] Furthermore, a second transmission shaft is provided at one end of the first transmission shaft away from the T-shaped lead screw, the first transmission shaft and the second transmission shaft are connected via a driving rod, and both ends of the driving rod are respectively fixedly connected to the first transmission shaft and the second transmission shaft;

[0022] A third gear is sleeved and fixedly connected on the second transmission shaft, a rocker mechanism is fixedly connected on the second fixing column, and the third gear is connected to the rocker mechanism through a second transmission chain.

[0023] Furthermore, the surfaces of the second transmission shaft corresponding to the first transmission shaft are respectively provided with a plurality of grooves, each groove on the second transmission shaft corresponds one-to-one to each groove on the first transmission shaft, and an electric telescopic rod is fixedly connected to each groove on the second transmission shaft.

[0024] Compared with the prior art, the utility model has the following significant advantages:

[0025] 1. Through the cooperation between the support frame, the front beam group, the bottom beam group and the drum bearing, the stability of the traction rope of the transmission line during the process of reeling and releasing the line is improved. At the same time, it provides better support for the large-tonnage pay-off drum used in the construction of the transmission line under the background of long-distance construction, thereby improving the construction efficiency. At the same time, the special structure of the pay-off part can make the force more stable, which greatly reduces the risk of overturning of the pay-off part during large-load traction operations.

[0026] 2. Considering the increasingly obvious trend of power construction extending to mountainous and remote areas, combined with the background of long-distance construction, the front beam group, the bottom beam group and the wire drum bearings in the wire-string mechanism are fixedly connected to the supporting frames on both sides in a detachable manner, so that the wire-string mechanism is modularized. At the same time, the cable arrangement part also adopts the above-mentioned method to achieve modular connection. This method effectively improves the mobility of the wire-string mechanism, improves its transportation efficiency, and also facilitates the storage and storage of the wire-string mechanism.

[0027] 3. A driving rod, a second transmission shaft, a third gear, a second transmission chain and a rocker mechanism are added to the cable arrangement part. Through the mutual cooperation between the above components, when the driving motor suddenly fails, the cable arrangement operation can be performed manually, thereby further improving the working efficiency of the cable rack mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a side view of the utility model;

[0029] Figure 2 It is a structural schematic diagram of the wire-releasing part of the utility model;

[0030] Figure 3 It is a structural schematic diagram of the wiring arrangement part of the utility model;

[0031] Figure 4 This utility model Figure 3 A in the enlarged view;

[0032] Figure 5 This is a stress analysis diagram of the support frame in the utility model;

[0033] Figure 6 This is a shear stress analysis diagram of the front end cross beam group in the utility model;

[0034] Figure 7 It is a stress analysis diagram of the bending strength of the first fixing column in the utility model;

[0035] Figure 8 It is a stress analysis diagram of the bending strength of the second fixing column in the utility model;

[0036] Fig. 9 It is a stress analysis diagram of the main body of the wire rack in the utility model.

[0037] In the figure: 1. wire laying part; 11. supporting frame; 111. upper horizontal support; 112. lower horizontal support; 113. front diagonal support; 114. rear diagonal support; 115. front vertical support; 116. supporting part; 12. front cross beam group; 121. front cross brace; 122. cross brace column; 13. bottom cross beam group; 131. rear cross brace; 132. connecting column; 14. supporting block; 15. rotating rod; 2. wire laying part; 21. wire rack body; 21 1. Side frame; 212. First fixed column; 213. Second fixed column; 214. Connecting rod; 22. T-type lead screw; 23. First gear; 24. Second gear; 25. First transmission shaft; 26. Wire arrangement roller; 27. First transmission chain; 28. Second transmission chain; 3. Second transmission shaft; 4. Driving rod; 5. Third gear; 6. First connecting part; 7. Second connecting part; 8. Third connecting part; 9. Rocker mechanism. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0039] like Figure 1-2 As shown, the utility model provides a wire-laying mechanism for a long-distance power transmission line, comprising a wire-laying portion 1, the wire-laying portion 1 comprising two support frames 11, the front ends of the two support frames 11 are connected via a front crossbeam group 12; the rear ends of the two support frames 11 are connected via a bottom crossbeam group 13; the tops of the two support frames 11 are connected via a cable drum bearing; each support frame 11 comprises an upper cross brace 111, a lower cross brace 112, a front diagonal brace 113, a rear diagonal brace 114 and a front vertical brace 115, the two ends of the rear diagonal brace 114 are respectively fixedly connected to one end of the upper cross brace 111 and the lower cross brace 112, the other end of the upper cross brace 111 is fixedly connected to one end of the front diagonal brace 113, the other end of the lower cross brace 112 is fixedly connected to one end of the front vertical brace 115, and the other end of the front vertical brace 115 is fixedly connected to the other end of the front diagonal brace 113. This structure increases the angle between the front diagonal brace 113 and the upper cross brace 111, making the structure more stable in stress, and effectively reducing the risk of overturning of the pay-off section 1 when performing heavy-load traction operations in the context of long-distance construction.

[0040] In one embodiment, the wire drum bearing includes support blocks 14 detachably mounted on two upper cross braces 111, a rotary rod 15 is provided between the two support blocks 14, and both ends of the rotary rod 15 are rotatably connected to the two support blocks 14, and a wire rope drum is sleeved on the rotary rod 15.

[0041] In one embodiment, a motor is fixedly connected to a support block 14, and the output end of the motor is fixedly connected to one end of the rotary rod 15. The motor assists the wire rope reel in winding the wire. At the same time, a motor reducer is added to the support block 14 to cooperate with the motor to maintain the required tension when performing the wire-releasing operation.

[0042] In one embodiment, a support portion 116 is provided in the space surrounded by each support stand 11 , and each support portion 116 includes a first support rod and a second support rod, and the first support rod and the second support rod are arranged in an X shape.

[0043] like Figure 5 As shown, considering that the span, conductor cross-section and tonnage of the long-distance construction background far exceed those of conventional projects, and the existing pay-off frame mechanism cannot effectively support the traction rope with increased volume and the rope drum for storing the traction rope, a pay-off frame mechanism as shown in the pay-off part 1 of the utility model is designed. After shear stress analysis of the support frame 11, the results show that the maximum stress of the support frame 11 is 18Mpa, and the shear stress is 0.7σs=241.5MPa, thereby obtaining the safety factor S of the support frame 11 立 =13.4. In summary, the shear strength reserve of the support frame 11 is large, which is sufficient to effectively support the rope drum and the traction rope stored on the rope drum under the background of long-distance construction, thereby improving its structural stability and thus improving construction efficiency.

[0044] In one embodiment, the front cross beam group 12 includes two front cross braces 121, which are connected by a plurality of cross brace columns 122, and the two ends of each cross brace column 122 are respectively fixedly connected to the two front cross braces 121, and the two ends of the two front cross braces 121 are respectively connected to the two front columns; two first connection parts 6 are respectively fixedly connected from top to bottom on the opposite side surfaces of the two front columns 115, and the two first connection parts 6 located at the top are respectively detachably fixedly connected to the two ends of one front cross brace 121; the two first connection parts 6 located at the bottom are respectively detachably fixedly connected to the two ends of the other front cross brace 121. The front cross beam group 12 effectively reduces the risk of the support frames 11 on both sides thereof shrinking inwards, and further improves the stability of its structure.

[0045] In one embodiment, the bottom cross beam group 13 includes a plurality of rear cross braces 131, and two adjacent rear cross braces 131 are connected by a plurality of connecting columns 132, and the two ends of each connecting column 132 are respectively fixedly connected to the two rear cross braces 131; the surfaces on the opposite sides of the two lower cross braces 112 are fixedly connected with second connecting parts 7 corresponding to each rear cross brace 131, and each second connecting part 7 is respectively detachably fixedly connected to the two ends of the corresponding rear cross brace 131.

[0046] like Figure 6 As shown, after the axial and bending strength analysis of the bottom beam group 13, the results show that the maximum stress of the bottom beam group 13 is 11Mpa, and the shear stress is 0.7σs=241.5MPa, so the safety factor S of the bottom beam group 13 is obtained. 立 =21.9, it can be seen that the shear strength reserve of the bottom measuring group is large and meets the needs of long-distance construction.

[0047] It should be noted that the shear stress of the support frame 11 and the bottom beam group 13 is the shear stress of their materials. In this embodiment, Q345 low alloy steel is selected as the main material for stress calculation, but it is not limited to practical Q345 low alloy steel. It should also be noted that the calculation method of the safety factor of the support frame 11 and the bottom beam group 13 is a common calculation method in the prior art, so its specific process is not described in this article.

[0048] In one embodiment, the first support rod and the second support rod are integrally formed, and the four ends of the support portion 116 are fixedly connected to the side walls of the space surrounded by the corresponding support stand 11 .

[0049] In one embodiment, each front cross brace 121 and the corresponding first connecting portion 6, and each lower cross brace 112 and the corresponding second connecting portion 7 are fixedly connected by bolts, and the bolts are made of high-strength steel to apply a larger pre-tightening force, thereby further improving the stability of the pay-off portion 1.

[0050] Through the first connecting part 6 and the second connecting part 7, the bottom beam group 13 and the front beam group 12 are detachably installed with the supporting frames 11 on both sides. This method improves the maneuverability of the pay-off part 1. At the same time, during the movement of the pay-off part 1, it occupies a small area and is easy to carry and transport.

[0051] In one embodiment, a placement groove adapted for the rotary rod 15 is downwardly opened at the upper ends of the two support blocks 14. When assembling the wire-releasing part 1, the support frames 11 on both sides are first fixedly connected to the front crossbeam group 12 and the bottom crossbeam group 13 respectively, and then the rotary rod 15 with the wire drum is installed in the placement groove, and the rotary rod 15 is limited by the placement groove to improve the efficiency of disassembly and assembly of the rotary rod 15; at the same time, a U-shaped card is added at the upper end of the support block 14 to further limit the rotary rod 15 to prevent the rotary rod 15 from moving out of the placement groove.

[0052] In one embodiment, a baffle is fixedly connected to the opposite side walls of the two support blocks 14 , and the baffle is used to further limit the rotation rod 15 to prevent the rotation rod 15 from deviating after a long period of rotation.

[0053] In one embodiment, a plurality of semi-cylindrical grooves are provided in the placement groove, each semi-cylindrical groove is provided with a roller, and the two ends of each roller are rotatably connected with the two ends of the corresponding semi-cylindrical groove, and the two ends of the side wall of the rotary rod 15 are respectively in contact with the surface of the roller in the corresponding placement groove, thereby reducing the friction between the roller and the support block 14, thereby increasing its service life. It should be noted that the central axis of the roller is parallel to the central axis of the rotary rod 15.

[0054] like Figure 3-4 As shown, the wire racking mechanism also includes a wire racking part 2, which includes a wire racking body 21 and a T-shaped lead screw 22 installed on the wire racking body 21, a lead screw nut is sleeved and threaded on the T-shaped lead screw 22, and a wire racking roller 26 is installed on the lead screw nut; the wire racking body 21 includes two trapezoidal side frames 211, a first fixing column 212 and a second fixing column 213 are respectively provided between the two oblique sides of the two side frames 211, and a third connecting part 8 is fixedly connected to the opposite surfaces of the two first fixing columns 212 and the opposite surfaces of the two second fixing columns 213, and a third connecting part 8 is fixedly connected to the two ends of the opposite side surface of the lower cross arm of the two side frames 211, and a connecting rod 214 is provided between each pair of third connecting parts 8, and the two ends of each connecting rod 214 are respectively detachably fixedly connected to the corresponding third connecting part 8. The connecting rod 214 allows the wire racking part 2 to be detachably installed, thereby improving the mobility of the wire racking part 2 and facilitating its movement, transportation and storage.

[0055] In one embodiment, a limit block is fixedly connected to the upper cross arms of the two side frames 211, and the two ends of the T-shaped lead screw 22 are rotatably connected to the two limit blocks respectively; a plurality of limit plates are arranged between the upper cross arms of the two side frames 211, and the surfaces of the limit plates are in contact with the lead screw nut. The limit plates limit the lead screw nut, thereby ensuring that the lead screw nut can reciprocate normally on the T-shaped lead screw 22.

[0056] In one embodiment, two limit blocks are provided with limit grooves adapted to the T-shaped lead screw 22, and U-shaped clips are added to the two limit blocks, which improves the efficiency of disassembly and assembly while also improving the stability of the T-shaped lead screw 22. It should be noted that the surfaces of the two ends of the side wall of the T-shaped lead screw 22 that contact the limit grooves are not provided with threads, and this design prevents the T-shaped lead screw 22 from shifting during rotation. At the same time, a baffle is added on the side of the limit block away from the second gear 24 to further prevent the T-shaped lead screw 22 from shifting.

[0057] In one embodiment, a roller is also added in the limiting groove formed on the limiting block to reduce the friction of the T-screw 22 during rotation, increase its service life, and improve the working efficiency of the T-screw 22 during rotation.

[0058] In one embodiment, a first transmission shaft 25 is fixedly connected to one end of the T-shaped lead screw 22, and the end of the first transmission shaft 25 away from the T-shaped lead screw 22 passes through a limit block and is fixedly connected to a second gear 24; a driving motor is fixedly connected to the first fixed column 212, and a first gear 23 is sleeved and fixedly connected to the output shaft of the driving motor, and the second gear 24 is connected to the first gear 23 through a first transmission chain 27.

[0059] Considering that in actual construction, the existing cable rack only supports the traction rope and cannot evenly wind the traction rope in the storage space of the rope drum during the storage process, a T-shaped lead screw 22 and other components are added to allow the traction rope to be adjusted in position during the storage process.

[0060] In this embodiment, when the traction rope is being stored, the driving motor drives the first gear 23 to rotate, and the first gear 23 drives the second gear 24 and the T-screw 22 to rotate through the first transmission chain 27. At this time, the screw nut drives the wire roller 26 to reciprocate along the straight direction of the T-screw 22, so that the traction rope being stored is offset, so that it can be evenly wound on the rope drum, thereby improving the storage efficiency.

[0061] In one embodiment, a control box is added to the second fixed column 213, and a PLC control element and a controller are provided in the control box. At the same time, a limit switch is added to the opposite surfaces of the two limit blocks. The controller is electrically connected to the two limit block tubes and the drive motor. When the lead screw nut reciprocates, it contacts the limit switch, and the drive motor reverses at this time, thereby realizing the reciprocating motion of the lead screw nut. It should be noted that the programming logic of the PLC control element in the control box is modified according to specific construction requirements.

[0062] In one embodiment, a second transmission shaft 3 is provided at one end of the first transmission shaft 25 away from the T-shaped screw 22, and the first transmission shaft 25 and the second transmission shaft 3 are connected by a driving rod 4, and the two ends of the driving rod 4 are respectively fixed to the first transmission shaft 25 and the second transmission shaft 3; a third gear 5 is sleeved and fixedly connected to the second transmission shaft 3, a rocker mechanism 9 is fixedly connected to the second fixed column 213, and the third gear 5 and the rocker mechanism 9 are connected by a second transmission chain 28.

[0063] In one embodiment, a plurality of grooves are respectively provided on the surfaces corresponding to the first transmission shaft 25 , each groove on the second transmission shaft 3 corresponds one-to-one to each groove on the first transmission shaft 25 , and an electric telescopic rod is fixedly connected to each groove on the second transmission shaft 3 .

[0064] In one embodiment, the electric telescopic rod is electrically connected to the controller.

[0065] In order to avoid the construction progress being stopped due to sudden failure of the driving motor, a rocker mechanism 9 and other components are added. The staff controls the electric telescopic rod to unfold through the controller and insert it into the groove opened on the first transmission shaft 25. Then the staff can manually rotate the T-screw 22, thereby improving the construction efficiency.

[0066] like Figure 7-9 As shown, the maximum stress of the first fixed column 212 and the second fixed column 213 after being squeezed under extreme working conditions is 22Mpa. According to the Q345 low alloy steel used above, its yield strength is 345Mpa. It can be seen that the maximum stress of the first fixed column 212 and the second fixed column 213 is much smaller than the yield strength of the material. At the same time, according to the actual construction situation, when the side frame 211 is under pressure, the maximum stress is located at the upper end of the side frame 211, and its maximum stress value is 10Mpa, which is also much smaller than the yield strength of the material.

[0067] In one embodiment, the wire-racking mechanism further includes a first battery fixedly connected to the wire-releasing part 1 and a second battery fixedly connected to the wire-arranging part 2, the first battery is electrically connected to the motor, and the second battery is electrically connected to the control box, the drive motor and the electric telescopic rod.

[0068] It is obvious 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A wiring mechanism for a long-distance power transmission line, characterized in that: The wire-releasing part (1) comprises two supporting frames (11), the front ends of the two supporting frames (11) are connected via a front crossbeam group (12); the rear ends of the two supporting frames (11) are connected via a bottom crossbeam group (13); and the tops of the two supporting frames (11) are connected via a wire drum bearing. Each of the supporting frames (11) comprises an upper cross brace (111), a lower cross brace (112), a front diagonal brace (113), a rear diagonal brace (114) and a front vertical brace (115), the two ends of the rear diagonal brace (114) being respectively fixedly connected to one end of the upper cross brace (111) and the lower cross brace (112), the other end of the upper cross brace (111) being fixedly connected to one end of the front diagonal brace (113), the other end of the lower cross brace (112) being fixedly connected to one end of the front vertical brace (115), and the other end of the front vertical brace (115) being fixedly connected to the other end of the front diagonal brace (113).

2. The long-distance power transmission line stringing mechanism according to claim 1, characterized in that: A support portion (116) is provided in the space surrounded by each of the support frames (11), each of the support portions (116) comprises a first support rod and a second support rod, and the first support rod and the second support rod are arranged in an X shape; The first support rod and the second support rod are integrally formed, and the four ends of the support portion (116) are fixedly connected to the side walls of the space surrounded by the corresponding support stand (11).

3. The long-distance power transmission line stringing mechanism according to claim 1, characterized in that: The front end cross beam group (12) comprises two front cross braces (121), the two front cross braces (121) are connected via a plurality of cross brace columns (122), the two ends of each cross brace column (122) are respectively fixedly connected to the two front cross braces (121), and the two ends of the two front cross braces (121) are respectively connected to the two front columns; Two first connection parts (6) are fixedly connected from top to bottom to the surfaces of the two opposite sides of the two front vertical supports (115), the two first connection parts (6) located at the top are respectively detachably fixedly connected to the two ends of a front cross support (121); and the two first connection parts (6) located at the bottom are respectively detachably fixedly connected to the two ends of another front cross support (121).

4. The long-distance power transmission line stringing mechanism according to claim 1, characterized in that: The bottom cross beam group (13) comprises a plurality of rear cross braces (131), two adjacent rear cross braces (131) are connected via a plurality of connecting columns (132), and both ends of each connecting column (132) are respectively fixedly connected to the two rear cross braces (131); The surfaces on the opposite sides of the two lower cross braces (112) are fixedly connected with second connecting parts (7) corresponding to each rear cross brace (131), and each second connecting part (7) is respectively detachably fixedly connected to two ends of the corresponding rear cross brace (131).

5. The long-distance power transmission line stringing mechanism according to claim 1, characterized in that: The wire drum bearing comprises support blocks (14) which are detachably mounted on two upper cross braces (111), a rotating rod (15) is arranged between the two support blocks (14), and two ends of the rotating rod (15) are rotatably connected to the two support blocks (14).

6. The long-distance power transmission line stringing mechanism according to claim 1, characterized in that: The wire racking mechanism further comprises a wire racking part (2), the wire racking part (2) comprising a wire racking body (21), and a T-shaped lead screw (22) mounted on the wire racking body (21), a lead screw nut being sleeved on and threadedly connected to the T-shaped lead screw (22), and a wire racking roller (26) being mounted on the lead screw nut; The wire rack body (21) comprises two trapezoidal side frames (211), a first fixing column (212) and a second fixing column (213) are respectively provided between the two oblique sides of the two side frames (211), a third connecting portion (8) is respectively fixedly connected to the opposite surfaces of the two first fixing columns (212) and the opposite surfaces of the two second fixing columns (213), a connecting rod (214) is provided between each pair of the third connecting portions (8), and the two ends of each connecting rod (214) are respectively detachably fixedly connected to the corresponding third connecting portion (8).

7. The long-distance power transmission line stringing mechanism according to claim 6, characterized in that: A limit block is fixedly connected to the upper cross arms of the two side frames (211), and the two ends of the T-shaped lead screw (22) are rotatably connected to the two limit blocks respectively; A plurality of limit plates are arranged between the upper cross arms of the two side frames (211), and the surfaces of the limit plates are in contact with the lead screw nuts.

8. The long-distance power transmission line stringing mechanism according to claim 7, characterized in that: One end of the T-shaped lead screw (22) is fixedly connected to a first transmission shaft (25); one end of the first transmission shaft (25) away from the T-shaped lead screw (22) passes through a limit block and is fixedly connected to a second gear (24); A driving motor is fixedly connected to the first fixing column (212), a first gear (23) is sleeved and fixedly connected to the output shaft of the driving motor, and the second gear (24) is connected to the first gear (23) via a first transmission chain (27).

9. The long-distance power transmission line stringing mechanism according to claim 8, characterized in that: A second transmission shaft (3) is provided at one end of the first transmission shaft (25) away from the T-shaped lead screw (22); the first transmission shaft (25) and the second transmission shaft (3) are connected via a driving rod (4); and both ends of the driving rod (4) are respectively fixedly connected to the first transmission shaft (25) and the second transmission shaft (3); A third gear (5) is sleeved and fixedly connected to the second transmission shaft (3), a rocker mechanism (9) is fixedly connected to the second fixed column (213), and the third gear (5) and the rocker mechanism (9) are connected via a second transmission chain (28).

10. The long-distance power transmission line stringing mechanism according to claim 9, characterized in that: The surfaces of the second transmission shaft (3) corresponding to the first transmission shaft (25) are respectively provided with a plurality of grooves, each groove on the second transmission shaft (3) corresponds one-to-one to each groove on the first transmission shaft (25), and each groove on the second transmission shaft (3) is fixedly connected to an electric telescopic rod.

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