Lossless traction tensioning device for high-voltage line

Abstract

The invention relates to a lossless traction tensioning device for a high-voltage line, and belongs to the technical field of high-voltage line installation. The device is mainly composed of a traction frame, a traction assembly, a clamping assembly, a positioning assembly and a detection assembly. A traction assembly is installed on the traction frame, and a traction wheel set of the traction assembly comprises at least two wire clamping wheels and is used for pulling the high-voltage wire in a lossless mode. The clamping assembly is formed by hinging an upper shell and a lower shell, a parallelogram clamping mechanism is arranged in the clamping assembly, and the clamping assembly is connected with the wheel set clamping mechanism in sliding fit through a pull rod to achieve the clamping action. The upper shell and the lower shell are hinged and connected in a sliding mode, locking is convenient, and stable clamping is guaranteed. And a locking mechanism is arranged in the lower shell and is matched with a locking block on the upper shell, so that the front end and the rear end are locked, and the high-voltage line is prevented from deviating due to stress. In addition, the front end of the device is provided with the positioning assembly, the rear end is provided with the detection assembly, and the detection end is connected with the positioning assembly. According to the invention, lossless traction and stable clamping of the high-voltage line are realized, and the safety and efficiency of high-voltage line installation are improved.

Description

Technical Field

[0001] The invention relates to a high-voltage line lossless traction tensioning device, belonging to the technical field of high-voltage line installation. Background Art

[0002] After the cables are initially installed on the straight tower, a tensioner is used to tension the cables. As a professional tool, the tensioner is usually designed with a ratchet handle, a traction rope, and a tensioning clamp. During operation, the staff first needs to fix one end of the traction rope to the tower, and then fix the other end of the tensioning clamp to the cable. By manually turning the ratchet handle, the traction rope will be gradually wound up, thereby pulling the tensioning clamp and the cable closer to the tower, thereby achieving the purpose of tensioning the cable.

[0003] However, in actual operation, this traditional cable tensioning method has exposed some significant shortcomings. In particular, during the cable tensioning process, once the tensioning clamp is fixed on the cable, its position cannot be adjusted. This means that if the initial position of the tensioning clamp is not selected properly, such as being too close to the tower, the cable may still not reach the required tension after all the traction ropes are retracted. Faced with this situation, the staff has to remove the tensioning clamp, readjust its position, and perform the tensioning operation again.

[0004] In order to solve the above problems, the existing early research and development has a Chinese invention patent with publication number CN118315971A, which includes: a traction frame, a cable traction module is provided on the traction frame, and a primary clamping module and a secondary clamping module are provided on the traction frame for controlling the unidirectional clamping of the cable. The primary clamping module moves on the traction frame and drives the secondary clamping module to perform secondary clamping on the cable through hydraulic transmission; both the primary clamping module and the secondary clamping module are lockable opening and closing structures, and the cable traction module drives the cable to move unidirectionally from the inside of the primary clamping module and the secondary clamping module; the cable can move in the tensioning direction relative to the clamping position to flexibly increase the tension of the cable, and the device can be installed on the cable once to adjust the tension to complete the adjustment of the tension, which increases the flexibility of the cable tensioning operation and improves the cable installation efficiency.

[0005] There are at least the following technical problems in the prior art: During the pulling process, the clamping shoe is always pressed against the high-voltage line under the elasticity of the compression spring, but the high-voltage line is basically exposed. If the clamping shoe is made of steel, the high-voltage line will be worn during the pulling process. If the clamping shoe is made of rubber, the clamping shoe will be severely worn. In addition, during the pulling process, the interior of the secondary clamping module is in elastic clamping, and the high-voltage line is easily derailed by force and needs to be readjusted. Since the first upper shell and the first lower shell are directly hinged, they are not easy to buckle. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a high-voltage line lossless traction and tensioning device to achieve lossless traction of the high-voltage line, while adopting front and rear end locking to avoid deviation of the high-voltage line under force.

[0007] The high-voltage line lossless traction and tensioning device of the present invention comprises a pulling frame, on which a pulling assembly and a clamping assembly are correspondingly mounted; A pulling assembly, comprising a pulling wheel group for pulling the high-voltage wire, wherein the pulling wheel group comprises at least two clamping wheels used in cooperation with each other; The clamping assembly comprises an upper shell and a lower shell which are correspondingly hingedly arranged, and a parallelogram clamping mechanism is respectively installed in the upper shell and the lower shell; The clamping assembly also includes a wheel clamping mechanism for controlling the action of the parallelogram clamping mechanism. The upper shell and the lower shell are respectively provided with slidingly matched wheel clamping mechanisms corresponding to the parallelogram clamping mechanisms. A pull rod is hingedly installed between the wheel clamping mechanism and the parallelogram clamping mechanism. When the wheel clamping mechanism moves in a direction away from the parallelogram clamping mechanism, the parallelogram mechanism is clamped under the pulling of the pull rod. The upper shell and the lower shell are hinged and slidably connected. After the upper shell rotates along the hinge point, the hinge point can be moved into the lower shell by movement. A locking mechanism is provided inside the opposite side of the hinge point of the lower shell. A locking block is provided on the upper shell corresponding to the locking mechanism. When the locking block extends into the lower shell, the locking mechanism can be used to lock the lower shell. It also includes a positioning component installed at the front end of the pulling frame, the positioning component is slidably installed on the pulling frame, a detection component is installed on the pulling frame at the rear end of the positioning component, and the detection end of the detection component is connected to the positioning component.

[0008] Furthermore, the wheel set clamping mechanism includes a sliding seat slidably mounted on the upper shell or the lower shell, the sliding seat includes an elastically mounted clamping wheel set, and the clamping wheel set includes one-way rotating wheels arranged in an array.

[0009] Furthermore, a parallelogram-arranged swing frame is hingedly mounted on the sliding seat, one-way rotating wheels are mounted on two hinge points of the swing frame away from the upper shell or the lower shell, and a spring member for pre-tightening is hingedly mounted on the swing frame, which causes the two swing rods in the swing frame to be arranged tilted.

[0010] Furthermore, a pre-tightening member is installed between the sliding seat and the upper shell or the lower shell, and the pre-tightening member makes the sliding seat abut against the upper shell or the lower shell, so that the parallelogram clamping mechanism is in an open state.

[0011] Furthermore, a slidably mounted hinge block is provided on the lower shell, and a return spring is installed between the hinge block and the lower shell, so that the hinge point of the hinge block is located outside the lower shell; The lower shell is hinged to the upper shell through a hinge block.

[0012] Furthermore, the locking mechanism includes a locking shaft slidably mounted in the lower housing, and a control button for controlling the movement of the locking shaft is correspondingly mounted on the locking shaft; A locking hole is provided on the locking block corresponding to the locking axis.

[0013] Furthermore, corresponding installations are provided on both sides of the locking shaft, a compression spring is installed between the two locking shafts, control rods are hingedly installed on the two locking shafts, one end of the two control rods away from the locking shaft is hinged to the moving column, a vertical sliding groove is correspondingly provided in the lower shell body, the moving column is installed in the sliding groove, and a control button is installed on the part of the moving column located outside the lower shell body.

[0014] Furthermore, a locking hole is provided on the lower shell body corresponding to the locking block, and one end of the locking shaft used for locking extends into the locking hole. A guide surface is provided on the locking shaft in the locking hole. When the locking block is pressed down, the locking shaft is subjected to force through the guide surface to complete rebound.

[0015] Furthermore, the pulling assembly includes a support seat installed on the pulling frame, an adjustment screw is installed on the support seat, a sliding movable seat is also installed on the support seat, a nut matching the adjustment screw is installed at one end of the movable seat, and a wire clamping wheel is elastically installed at the end of the movable seat away from the nut.

[0016] Furthermore, the positioning assembly and the pulling assembly have the same structure, and the clamping wheel in the positioning assembly is unidirectionally rotatable; A sliding frame is installed between the positioning assembly and the stretching frame, and the sliding frame is slidably connected to the stretching frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a wheel clamping mechanism to make the high-voltage line rollingly transmitted during the pulling process, and utilizes the sliding connection between the wheel clamping mechanism and the upper shell or the lower shell to keep the parallelogram clamping mechanism in an open state, thereby preventing the clamping shoes in the quadrilateral clamping mechanism from abutting against the high-voltage line and causing wear, and by adding a positioning assembly, the pulling position of the high-voltage line is effectively guaranteed, and the relative clamping axis in the clamping assembly and the high-voltage line have a high degree of overlap, thereby ensuring the effective use of the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural diagrams of Embodiment 1 of the present invention; Figure 2 This is the second structural diagram of Embodiment 1 of the present invention; Figure 3 is a schematic diagram of the internal structure of the clamping assembly of Example 1 of the present invention; Figure 4is a right side view of the clamping assembly of embodiment 1 of the present invention; Figure 5 yes Figure 4 Full section view at AA in the middle; Figure 6 is a schematic diagram of the external structure of the clamping assembly of Example 1 of the present invention; Figure 7 is a schematic structural diagram of a locking mechanism according to Embodiment 1 of the present invention; Figure 8 yes Figure 7 A partial enlarged view of point B in the middle; Fig. 9 is a schematic structural diagram of a pulling assembly according to Embodiment 1 of the present invention; Fig.10 yes Fig. 9 A partial enlarged view of point C in the middle; In the figure: 1. Pulling assembly; 11. Hand wheel; 12. Adjusting screw; 13. Support seat; 14. Clamping wheel; 15. Moving seat; 16. Ratchet wrench; 2. Clamping assembly; 21. Locking block; 211. Locking hole; 22. Parallelogram clamping mechanism; 221. Clamping shoe; 222. Connecting rod; 23. Upper shell; 24. Wheel set clamping mechanism; 241. One-way rotating wheel; 242. Swinging frame; 2421. Swinging rod; 2422. Connecting rod; 243. Spring member; 244. Sliding seat; 25. Locking mechanism; 251. Compression spring; 252. Locking shaft; 2521. Guide surface; 253. Moving column; 254. Control rod; 255. Slide groove; 256. Control button; 26. Lower shell; 261. Articulated block; 262. Return spring; 263. Locking hole; 27. Preload member; 28. Pull rod; 29. ​​Connecting frame; 3. Positioning assembly; 31. Sliding frame; 4. Detection components; 41. Detection parts; 42. Digital display; 5. Pulling frame. DETAILED DESCRIPTION

[0019] Example 1 like Figures 1 to 10 As shown, the high-voltage line lossless traction tensioning device of the present invention comprises a pulling frame 5, on which a pulling assembly 1 and a clamping assembly 2 are correspondingly mounted; The pulling assembly 1 includes a pulling wheel group for pulling the high-voltage wire, and the pulling wheel group includes at least two clamping wheels 14 used in cooperation with each other; The clamping assembly 2 comprises an upper shell 23 and a lower shell 26 which are arranged in a corresponding hinged manner, and a parallelogram clamping mechanism 22 is installed in the upper shell 23 and the lower shell 26 respectively; The lower shell 26 is mounted on the stretching frame 5 via a connecting frame 29 , and two groups of clamping assemblies 2 can be arranged on the stretching frame 5 .

[0020] The parallelogram clamping mechanism 22 includes a connecting rod 222 hinged to the upper shell 23 or the lower shell 26. The other ends of the two parallel connecting rods 222 are hinged to the clamping shoe 221. The connecting rods 222 are tilted.

[0021] The clamping assembly 2 also includes a wheel clamping mechanism 24 for controlling the action of the parallelogram clamping mechanism 22. The upper shell 23 and the lower shell 26 are respectively provided with slidingly matched wheel clamping mechanisms 24 corresponding to the parallelogram clamping mechanisms 22. A pull rod 28 is hingedly installed between the wheel clamping mechanism 24 and the parallelogram clamping mechanism 22. When the wheel clamping mechanism 24 moves in a direction away from the parallelogram clamping mechanism 22, the parallelogram mechanism is clamped under the pulling of the pull rod 28. The upper shell 23 and the lower shell 26 are hinged and slidably connected. After the upper shell 23 rotates along the hinge point, the hinge point can be moved into the lower shell 26 by movement. A locking mechanism 25 is provided inside the lower shell 26 on the opposite side of the hinge point. A locking block 21 is provided on the upper shell 23 corresponding to the locking mechanism 25. When the locking block 21 extends into the lower shell 26, the lower shell 26 can be locked by the locking mechanism 25. It also includes a positioning component 3 installed at the front end of the pulling frame 5, the positioning component 3 is slidably installed on the pulling frame 5, and a detection component 4 is installed on the pulling frame 5 at the rear end of the positioning component 3, and the detection end of the detection component 4 is connected to the positioning component 3.

[0022] like Figure 1 As shown, the detection assembly 4 includes a tension detector installed on the pulling frame 5. The tension detector adopts a digital display S-type tension detector. The tension detector includes a detection member 41 and a digital display 42. The digital display is installed on the pulling frame 5 at one end.

[0023] The wheel clamping mechanism 24 includes a sliding seat 244 slidably mounted on the upper shell 23 or the lower shell 26, and the sliding seat 244 includes an elastically mounted clamping wheel group, which includes arranged one-way wheels 241. The one-way wheels 241 can use the ratchet inside the existing bicycle rear wheel to achieve unidirectional rotation.

[0024] like Figure 5 As shown, a swing frame 242 arranged in a parallelogram is hingedly mounted on the sliding seat 244, and a one-way rotating wheel 241 is installed on the two hinge points of the swing frame 242 away from the upper shell 23 or the lower shell 26. A spring member 243 for pre-tightening is hinged on the swing frame 242, and the spring member 243 causes the two swing rods 2421 in the swing frame 242 to be arranged tilted.

[0025] The same end of the two swing rods 2421 is hinged to the upper shell 23 or the lower shell 26, and the other end is hinged to the connecting rod 2422. The connecting rod 2422 and the swing rod 2421 form a swing frame. The spring member 243 is hinged between the upper shell 23 or the lower shell 26 and the connecting rod 2422, so that the swing rod 2421 is in a tilted state through the spring member 243.

[0026] A pre-tightening member 27 is installed between the sliding seat 244 and the upper shell 23 or the lower shell 26 . The pre-tightening member 27 makes the sliding seat 244 abut against the upper shell 23 or the lower shell 26 , so that the parallelogram clamping mechanism 22 is in an open state.

[0027] like Figure 2 or Figure 5 As shown, the preload member 27 includes a pressure plate, and a compression spring is installed between the pressure plate and the sliding seat 244. The compression spring pushes the sliding seat 244 to one end close to the parallelogram clamping mechanism 22, and the pull rod 28 connects the sliding seat 244 and the clamping shoe 221 together by hinge.

[0028] A slidably mounted hinge block 261 is provided on the lower housing 26, and a return spring 262 is installed between the hinge block 261 and the lower housing 26. The return spring 262 makes the hinge point of the hinge block 261 outside the lower housing 26; The lower housing 26 is hinged to the upper housing 23 via a hinge block 261 .

[0029] The locking mechanism 25 includes a locking shaft 252 slidably mounted in the lower housing 26 , and a control button 256 for controlling the movement of the locking shaft 252 is correspondingly mounted on the locking shaft 252 ; The locking block 21 is provided with a locking hole 211 corresponding to the locking axis 252 .

[0030] The locking shaft 252 is installed correspondingly on both sides, and a compression spring 251 is installed between the two locking shafts 252. Control rods 254 are hingedly installed on the two locking shafts 252 respectively. The ends of the two control rods 254 away from the locking shaft 252 are hinged to the moving column 253. A vertical sliding groove 255 is correspondingly provided in the lower shell 26, and the moving column 253 is installed in the sliding groove 255. A control button 256 is installed on the part of the moving column 253 located outside the lower shell 26.

[0031] A locking hole 263 is provided on the lower shell body 26 corresponding to the locking block 21, and one end of the locking shaft 252 used for locking extends into the locking hole 263. A guide surface 2521 is provided on the locking shaft 252 located in the locking hole 263. When the locking block 21 is pressed down, the locking shaft 252 is forced to rebound through the guide surface 2521.

[0032] The pulling assembly 1 includes a support seat 13 installed on the pulling frame 5, an adjusting screw 12 is installed on the support seat 13, and a sliding movable seat 15 is also installed on the support seat 13. A nut matching the adjusting screw 12 is installed at one end of the movable seat 15, and a wire clamping wheel 14 is elastically installed at the end of the movable seat 15 away from the nut.

[0033] One of the clamping wheels 14 is a driving wheel, and a ratchet wrench 16 is installed on the upper end of the driving wheel through a screw. The ratchet wrench 16 drives the driving wheel to rotate, thereby pulling the high-voltage line.

[0034] A hand wheel 11 is installed at one end of the adjusting screw 12, and the hand wheel 11 is used to rotate the adjusting screw 12 to move the movable seat 15. The threads at both ends of the adjusting screw 12 are arranged in opposite directions, so that the movable seat 15 moves inward or outward synchronously when rotating.

[0035] The positioning assembly 3 is configured in the same structure as the pulling assembly 1 , and the clamping wheel 14 in the positioning assembly 3 is configured for unidirectional rotation; the unidirectional rotation can be achieved by using an existing ratchet wheel inside the rear wheel of a bicycle.

[0036] A sliding frame 31 is installed between the positioning assembly 3 and the pulling frame 5 , and the sliding frame 31 is slidably connected to the pulling frame 5 .

[0037] Working process: Step one, pre-adjust the wire clamping wheels 14 in the pulling assembly 1 and the positioning assembly 3 to the appropriate position through the hand wheels at both ends, pull the device to the wire tower through the rigging, and press the control button 256 to move the movable column 253 to one end in the slide groove 255. At this time, the movable column 253 drives the control rod 254 to move, and the control rod 254 drives the locking shafts 252 on both sides to move. When the locking shaft 252 slides out of the locking hole 211, the return spring 262 pops out the hinge block 261, and at the same time, the hinge block drives the upper shell 23 to move upward, thereby opening the clamping assembly 2.

[0038] Step two, place the high-voltage wire between the two clamping wheels in the positioning assembly 3 and the pulling assembly, lock the clamping wheels by turning the hand wheel, and after locking, buckle the upper shell 23 and press the upper shell 23 at the same time. At this time, the hinge block 261 slides into the lower shell 26, and when the hinge point enters the lower shell 26, the locking block 21 enters the locking hole 263. Continue the pressing process, press the control button 256 or use the guide surface 2521 to make the locking shaft 252 rebound. When the locking hole 211 reaches the position, release the control button 256, and the locking shaft 252 enters the locking hole 211, thereby realizing the rapid locking of the clamping assembly.

[0039] Step three, by rotating the ratchet wrench 16, a clamping wheel 14 of the pulling assembly 1 is driven to rotate, thereby pulling the high-voltage line. When no force is applied, the unidirectional rotating clamping wheel in the positioning assembly 3 locks the high-voltage line to prevent the high-voltage line from retreating. During the pulling process, the unidirectional rotating wheel 241 in the wheel group clamping mechanism 24 is attached to the high-voltage line by the elastic force of the spring member 243 and rotates. When no force is applied, the unidirectional rotating wheel 241 and the unidirectional rotating clamping wheel in the positioning assembly 3 are locked at the same time. However, due to the sliding seat 244 being slidable, the unidirectional rotating wheel 241 does not provide a locking force at this time, which is mainly achieved by the unidirectional rotating clamping wheel in the positioning assembly 3. At this time, the detection member 41 in the tension tester can be measured, and the data can be viewed through the digital display 42. When the corresponding value is reached, the high-voltage line can be fixed.

[0040] Working principle: When the unidirectional rotating clamping wheel in the positioning assembly 3 slips, the high-voltage wire cannot be effectively locked. At this time, the unidirectional rotating wheel 241 in the wheel group clamping mechanism 24 drives the sliding seat 244 to move to one end, and the moving seat 15 pulls the clamping shoe 221 in the parallelogram clamping mechanism 22 through the pull rod 28 to lock it, thereby achieving stable locking.

[0041] The description of the direction and relative position relationship of the structure in the present invention, such as the description of front, back, left, right, up, and down, does not constitute a limitation of the present invention, but is only for the convenience of description.

Claims

1. A high-voltage line lossless traction tensioning device, comprising a pulling frame (5), on which a pulling assembly (1) and a clamping assembly (2) are correspondingly mounted; A pulling assembly (1) comprises a pulling wheel assembly for pulling a high-voltage wire, the pulling wheel assembly comprising at least two clamping wheels (14) used in cooperation with each other; The clamping assembly (2) comprises an upper shell (23) and a lower shell (26) which are arranged in a corresponding hinged manner, wherein a parallelogram clamping mechanism (22) is respectively installed in the upper shell (23) and the lower shell (26); It is characterized in that The clamping assembly (2) further comprises a wheel clamping mechanism (24) for controlling the movement of the parallelogram clamping mechanism (22); the upper shell (23) and the lower shell (26) are respectively provided with a wheel clamping mechanism (24) corresponding to the parallelogram clamping mechanism (22) in a sliding manner; a pull rod (28) is hingedly installed between the wheel clamping mechanism (24) and the parallelogram clamping mechanism (22); when the wheel clamping mechanism (24) moves in a direction away from the parallelogram clamping mechanism (22), the parallelogram mechanism is clamped under the pulling of the pull rod (28); The upper shell (23) and the lower shell (26) are hinged and slidably connected. When the upper shell (23) is rotated along the hinge point, the hinge point can be moved into the lower shell (26). A locking mechanism (25) is provided inside the lower shell (26) on the side opposite to the hinge point. A locking block (21) is provided on the upper shell (23) corresponding to the locking mechanism (25). When the locking block (21) extends into the lower shell (26), the lower shell (26) can be locked by the locking mechanism (25). It also includes a positioning component (3) installed at the front end of the pulling frame (5), the positioning component (3) is slidably installed on the pulling frame (5), and a detection component (4) is installed on the pulling frame (5) at the rear end of the positioning component (3), and the detection end of the detection component (4) is connected to the positioning component (3).

2. The high-voltage line lossless traction tensioning device according to claim 1, characterized in that: The wheel set clamping mechanism (24) comprises a sliding seat (244) slidably mounted on the upper shell (23) or the lower shell (26), the sliding seat (244) comprising an elastically mounted clamping wheel set, the clamping wheel set comprising one-way rotating wheels (241) arranged in an array.

3. The high-voltage line lossless traction tensioning device according to claim 2 is characterized in that: A swing frame (242) arranged in a parallelogram is hingedly mounted on the sliding seat (244); one-way rotating wheels (241) are mounted on two hinge points of the swing frame (242) away from the upper housing (23) or the lower housing (26); a spring member (243) for pre-tightening is hingedly mounted on the swing frame (242); the spring member (243) causes two swing rods (2421) in the swing frame (242) to be arranged in an inclined manner.

4. The high-voltage line lossless traction tensioning device according to claim 3 is characterized in that: A pre-tightening member (27) is installed between the sliding seat (244) and the upper shell (23) or the lower shell (26); the pre-tightening member (27) causes the sliding seat (244) to abut against the upper shell (23) or the lower shell (26), thereby placing the parallelogram clamping mechanism (22) in an open state.

5. The high-voltage line lossless traction tensioning device according to any one of claims 1 to 4, characterized in that: A slidably mounted hinge block (261) is provided on the lower housing (26), a return spring (262) is installed between the hinge block (261) and the lower housing (26), and the return spring (262) enables the hinge point of the hinge block (261) to be located outside the lower housing (26); The lower housing (26) is hinged to the upper housing (23) via a hinge block (261).

6. The high-voltage line lossless traction tensioning device according to claim 1, characterized in that: The locking mechanism (25) comprises a locking shaft (252) slidably mounted in the lower housing (26), and a control button (256) for controlling the movement of the locking shaft (252) is correspondingly mounted on the locking shaft (252); A locking hole (211) is formed on the locking block (21) corresponding to the locking axis (252).

7. The high-voltage line lossless traction tensioning device according to claim 6, characterized in that: The locking shaft (252) is installed correspondingly on both sides, a compression spring (251) is installed between the two locking shafts (252), and control rods (254) are respectively hingedly installed on the two locking shafts (252), and one end of the two control rods (254) away from the locking shaft (252) is hinged to the moving column (253), and a vertical slide groove (255) is correspondingly provided in the lower shell (26), and the moving column (253) is installed in the slide groove (255), and a control button (256) is installed on the part of the moving column (253) located outside the lower shell (26).

8. The high-voltage line lossless traction tensioning device according to claim 7, characterized in that: A locking hole (263) is provided on the lower shell (26) corresponding to the locking block (21); one end of the locking shaft (252) for locking extends into the locking hole (263); a guide surface (2521) is provided on the locking shaft (252) located in the locking hole (263); when the locking block (21) is pressed downward, the locking shaft (252) is forced to rebound through the guide surface (2521).

9. The high-voltage line lossless traction tensioning device according to claim 1, characterized in that: The pulling assembly (1) comprises a support seat (13) mounted on the pulling frame (5), an adjusting screw (12) being mounted on the support seat (13), a slidingly matched moving seat (15) being also mounted on the support seat (13), a nut matching the adjusting screw (12) being mounted on one end of the moving seat (15), and a wire clamping wheel (14) being elastically mounted on the end of the moving seat (15) facing away from the nut.

10. The high-voltage line lossless traction tensioning device according to claim 9, characterized in that: The positioning assembly (3) has the same structure as the pulling assembly (1), and the clamping wheel (14) in the positioning assembly (3) is unidirectionally rotatable; A sliding frame (31) is installed between the positioning assembly (3) and the pulling frame (5), and the sliding frame (31) is slidably connected to the pulling frame (5).

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