High-voltage wire non-destructive traction tensioning device

Abstract

The present invention relates to a non-destructive traction and tensioning device for high-voltage lines, belonging to the technical field of high-voltage line installation. The device mainly consists of a traction frame, a traction assembly, a clamping assembly, a positioning assembly and a detection assembly. The traction assembly is installed on the traction frame, and its traction wheel set includes at least two wire clamping wheels for non-destructively pulling high-voltage lines. The clamping assembly is formed by hinging an upper shell and a lower shell, and a parallelogram clamping mechanism is built inside. It is connected to a wheel set clamping mechanism with sliding fit through a pull rod to achieve the clamping action. The upper and lower shells are hinged and slidably connected, which is convenient for locking and ensures stable clamping. A locking mechanism is arranged inside the lower shell and cooperates with a locking block on the upper shell to achieve front and rear end locking and prevent the high-voltage line from deviating under force. In addition, a positioning assembly is arranged at the front end of the device, and a detection assembly is installed at the rear end. The detection end is connected to the positioning assembly to ensure precise control of the tension of the high-voltage line. The present invention realizes non-destructive pulling and stable clamping of high-voltage lines, and improves the safety and efficiency of high-voltage line installation.

Description

Technical Field

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

[0002] After manually initially erecting the cable onto the straight tower, a wire tightener is used for the tensioning operation of the cable. As a professional tool, the design principle of the wire tightener usually includes a ratchet handle, a traction cable, and a wire clamp. During operation, the staff first needs to fix one end of the traction cable to the tower, and then fix the other end of the wire clamp to the cable. By manually rotating the ratchet handle, the traction cable will be gradually wound up, thereby pulling the wire clamp and the cable closer to the tower to achieve the purpose of tensioning the cable.

[0003] However, in actual operation, this traditional wire-tightening method exposes some significant drawbacks. Especially during the cable tensioning process, once the wire clamp is fixed to the cable, its position cannot be adjusted anymore. This means that if the initial position of the wire clamp is not properly selected, such as being too close to the tower, then after the traction cable is fully retracted, the cable may still not reach the required tension. In the face of this situation, the staff has to remove the wire clamp, re-adjust its position, and perform the tensioning operation again.

[0004] To solve the above problems, a Chinese invention patent with the publication number CN118315971A in the prior research and development includes: a traction frame, on which a cable traction module is provided, and a primary clamping module and a secondary clamping module for controlling the one-way clamping of the cable are provided on the traction frame. 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 relative to the clamping position in the tensioning direction to flexibly increase the tension degree of the cable, and the device can complete the adjustment of the tension degree by installing it on the cable once, 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:

[0006] During the pulling process, the clamping tile is constantly pressed against the high-voltage line under the elasticity of the compression spring. However, the high-voltage lines are basically in a bare state. If the clamping tile is made of steel, it will cause wear to the high-voltage line during the pulling process. If the clamping tile is made of rubber, the clamping tile will be severely worn. In addition, during the pulling process, the inside of the secondary clamping module is in elastic clamping, and the high-voltage line is prone to deviate from the track under force and needs to be readjusted. Since the first upper shell and the first lower shell are directly hinged, it is not easy to be buckled. Summary of the Invention

[0007] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, provide a high-voltage line non-destructive traction tensioning device, realize the non-destructive pulling of the high-voltage line, and at the same time adopt front and rear end locking to avoid the high-voltage line deviating under force.

[0008] The high-voltage line non-destructive traction tensioning device described in the present invention includes a pulling frame, and a pulling component and a clamping component are correspondingly installed on the pulling frame;

[0009] The pulling component includes a pulling wheel set for pulling the high-voltage line, and the pulling wheel set includes at least two wire clamping wheels that cooperate with each other;

[0010] The clamping component includes an upper shell and a lower shell that are correspondingly hinged, and a parallelogram clamping mechanism is installed in the upper shell and the lower shell respectively;

[0011] The clamping component further includes a wheel set clamping mechanism for controlling the action of the parallelogram clamping mechanism. The wheel set clamping mechanisms that are slidably matched are respectively installed in the upper shell and the lower shell corresponding to the parallelogram clamping mechanism. A pull rod is hingedly installed between the wheel set clamping mechanism and the parallelogram clamping mechanism. When the wheel set clamping mechanism moves in a direction away from the parallelogram clamping mechanism, the parallelogram mechanism is clamped under the pulling of the pull rod;

[0012] The upper shell and the lower shell are hinged and slidably connected. After the upper shell rotates along the hinge point, it can move so that the hinge point moves into the lower shell. A locking mechanism is provided inside the opposite side of the hinge point of the lower shell, and a locking block is provided on the upper shell corresponding to the locking mechanism. When the locking block extends into the lower shell, it can be locked by the locking mechanism;

[0013] It further includes a positioning component installed at the front end of the pulling frame. The positioning component is slidably installed on the pulling frame, and a detection component is installed on the pulling frame at the rear end of the positioning component. The detection end of the detection component is connected to the positioning component.

[0014] Further, the wheel set clamping mechanism includes a sliding seat slidably installed on the upper shell or the lower shell. The sliding seat includes a clamping wheel set elastically installed. The clamping wheel set includes one-way rotating wheels arranged in a row.

[0015] Further, a parallelogram-shaped swing frame is hingedly installed on the sliding seat. One-way rotating wheels are installed at the two hinge points of the swing frame away from the upper shell or the lower shell. A spring member for pre-tightening is hinged on the swing frame, and the spring member makes the two swing rods in the swing frame inclined.

[0016] Further, a pre-tightening member is installed between the sliding seat and the upper shell or the lower shell. 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.

[0017] Furthermore, a hinged block is slidably mounted on the lower housing, and a return spring is installed between the hinged block and the lower housing, so that the hinge point of the hinged block is outside the lower housing;

[0018] The lower housing is hinged to the upper housing through the hinged block.

[0019] 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 installed on the locking shaft;

[0020] A locking hole is correspondingly provided on the locking block for the locking shaft.

[0021] Furthermore, the two sides of the locking shaft are correspondingly installed, a compression spring is installed between the two locking shafts, control rods are respectively hingedly installed on the two locking shafts, one ends of the two control rods away from the locking shafts are hinged to the moving column, a vertical sliding groove is correspondingly provided in the lower housing, 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 housing.

[0022] Furthermore, a lock hole is correspondingly provided on the lower housing for the locking block, one end of the locking shaft for locking extends into the lock hole, and a guiding surface is provided on the locking shaft located in the lock hole. When the locking block is pressed down, the locking shaft is stressed through the guiding surface to complete the rebound.

[0023] Furthermore, the pulling component includes a support seat installed on the pulling frame, an adjusting screw is installed on the support seat, a moving seat in sliding fit is also installed on the support seat, a nut adapted to the adjusting screw is installed at one end of the moving seat, and a wire clamping wheel is elastically installed at the end of the moving seat away from the nut.

[0024] Furthermore, the positioning component is arranged with the same structure as the pulling component, and the wire clamping wheel in the positioning component is arranged to rotate unidirectionally;

[0025] A sliding frame is installed between the positioning component and the pulling frame, and the sliding frame is slidably connected to the pulling frame.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] Through the wheel set clamping mechanism of the present invention, the high-voltage wire is driven to roll during the pulling process. By using the sliding connection between the wheel set clamping mechanism and the upper housing or the lower housing, the parallelogram clamping mechanism is in an open state, avoiding the clamping tile in the quadrilateral clamping mechanism from abutting against the high-voltage wire and causing wear. By adding a positioning component, the pulling position of the high-voltage wire is effectively guaranteed, ensuring a high coincidence degree between the relative clamping axis in the clamping component and the high-voltage wire, and ensuring the effective use of the clamping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1is one of the structural schematic diagrams of Embodiment 1 of the present invention;

[0029] Figure 2 is the second structural schematic diagram of Embodiment 1 of the present invention;

[0030] Figure 3 is the internal structural schematic diagram of the clamping assembly of Embodiment 1 of the present invention;

[0031] Figure 4 is the right view of the clamping assembly of Embodiment 1 of the present invention;

[0032] Figure 5 is Figure 4 the full sectional view at A - A in;

[0033] Figure 6 is the external structural schematic diagram of the clamping assembly of Embodiment 1 of the present invention;

[0034] Figure 7 is the structural schematic diagram of the locking mechanism of Embodiment 1 of the present invention;

[0035] Figure 8 is Figure 7 the partial enlarged view at B in;

[0036] Figure 9 is the structural schematic diagram of the pulling assembly of Embodiment 1 of the present invention;

[0037] Figure 10 is Figure 9 the partial enlarged view at C in;

[0038] In the figure:

[0039] 1. Pulling assembly; 11. Handwheel; 12. Adjusting screw; 13. Support seat; 14. Thread take - up wheel; 15. Moving seat; 16. Ratchet wrench;

[0040] 2. Clamping assembly; 21. Locking block; 211. Locking hole; 22. Parallelogram clamping mechanism; 221. Clamping tile; 222. Link; 23. Upper housing; 24. Wheel - set clamping mechanism; 241. One - way runner; 242. Swing frame; 2421. Swing 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. Chute; 256. Control button; 26. Lower housing; 261. Hinge block; 262. Return spring; 263. Lock hole; 27. Pre - tightening member; 28. Pull rod; 29. Connecting frame;

[0041] 3. Positioning assembly; 31. Sliding frame;

[0042] 4. Detection component; 41. Detection piece; 42. Digital display

[0043] 5. Tensioning frame Detailed implementation mode

[0044] Embodiment 1

[0045] As Figures 1 to 10 shown, the high-voltage line non-destructive traction tensioning device of the present invention includes a tensioning frame 5, and a traction component 1 and a clamping component 2 are correspondingly installed on the tensioning frame 5;

[0046] The traction component 1 includes a traction wheel set for traction of the high-voltage line, and the traction wheel set includes at least two wire clamping wheels 14 that cooperate with each other;

[0047] The clamping component 2 includes an upper shell 23 and a lower shell 26 that are correspondingly hinged, and a parallelogram clamping mechanism 22 is installed in the upper shell 23 and the lower shell 26 respectively;

[0048] The lower shell 26 is installed on the tensioning frame 5 through a connecting frame 29, and two groups of clamping components 2 can be arranged on the tensioning frame 5.

[0049] The parallelogram clamping mechanism 22 includes a connecting rod 222 hinged to the upper shell 23 or the lower shell 26, and the other ends of the two parallel connecting rods 222 are hinged to the clamping tile 221, and the connecting rod 222 is arranged obliquely.

[0050] The clamping component 2 further includes a wheel set clamping mechanism 24 for controlling the action of the parallelogram clamping mechanism 22. The wheel set clamping mechanisms 24 in sliding fit are respectively installed in the upper shell 23 and the lower shell 26 corresponding to the parallelogram clamping mechanism 22. A pull rod 28 is hingedly installed between the wheel set clamping mechanism 24 and the parallelogram clamping mechanism 22. When the wheel set clamping mechanism 24 moves away from the parallelogram clamping mechanism 22, the parallelogram mechanism is clamped under the traction of the pull rod 28;

[0051] The upper shell 23 and the lower shell 26 are hinged and slidably connected. After the upper shell 23 rotates along the hinge point, it can move to move the hinge point into the lower shell 26. A locking mechanism 25 is arranged inside the lower shell 26 on the opposite side of the hinge point of the lower shell 26. A locking block 21 is arranged on the upper shell 23 corresponding to the locking mechanism 25. When the locking block 21 extends into the lower shell 26, it can be locked by the locking mechanism 25;

[0052] It further includes a positioning component 3 installed at the front end of the tensioning frame 5. The positioning component 3 is slidably installed on the tensioning frame 5. A detection component 4 is installed on the tensioning 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.

[0053] AsFigure 1 As shown, the detection component 4 includes a tensile force detector installed on the traction frame 5. The tensile force detector adopts a digital display S-type tensile force detector, which includes a detection piece 41 and a digital display 42. The digital display is installed on one end of the traction frame 5.

[0054] The wheel set clamping mechanism 24 includes a sliding seat 244 slidably installed on the upper housing 23 or the lower housing 26. The sliding seat 244 includes a clamping wheel set elastically installed. The clamping wheel set includes one-way rotating wheels 241 arranged in sequence. The one-way rotating wheels 241 can be realized by the ratchets inside the existing bicycle rear wheels to achieve one-way rotation.

[0055] As Figure 5 shown, a swing frame 242 arranged in a parallelogram is hingedly installed on the sliding seat 244. One-way rotating wheels 241 are installed on the two hinge points of the swing frame 242 away from the upper housing 23 or the lower housing 26. A spring member 243 for preloading is hinged on the swing frame 242, and the spring member 243 makes the two swing rods 2421 in the swing frame 242 arranged obliquely.

[0056] The two swing rods 2421 are hinged to the upper housing 23 or the lower housing 26 at the same end and are hinged to the connecting rod 2422 at the other end. A swing frame is formed by the connecting rod 2422 and the swing rods 2421. The spring member 243 is hinged between the upper housing 23 or the lower housing 26 and the connecting rod 2422, so that the swing rods 2421 are in an inclined state through the spring member 243.

[0057] A preloading member 27 is installed between the sliding seat 244 and the upper housing 23 or the lower housing 26. The preloading member 27 makes the sliding seat 244 abut against the upper housing 23 or the lower housing 26, so that the parallelogram clamping mechanism 22 is in an open state.

[0058] As Figure 2 or Figure 5 shown, the preloading member 27 includes a pressing plate. A compression spring is installed between the pressing plate and the sliding seat 244. Through the compression spring, the sliding seat 244 is pushed against one end close to the parallelogram clamping mechanism 22. The pull rod 28 connects the sliding seat 244 and the clamping tile 221 together through a hinge.

[0059] The lower housing 26 is provided with a slidably installed hinge block 261. A return spring 262 is installed between the hinge block 261 and the lower housing 26, and the return spring 262 makes the hinge point of the hinge block 261 outside the lower housing 26;

[0060] The lower housing 26 is hinged to the upper housing 23 through the hinge block 261.

[0061] The locking mechanism 25 includes a locking shaft 252 slidably installed in the lower housing 26. A control button 256 for controlling the movement of the locking shaft 252 is correspondingly installed on the locking shaft 252;

[0062] A locking hole 211 is provided on the locking block 21 corresponding to the locking shaft 252.

[0063] The two sides of the locking shaft 252 are installed correspondingly. A compression spring 251 is installed between the two locking shafts 252. Control rods 254 are respectively hingedly installed on the two locking shafts 252. One end of the two control rods 254 away from the locking shaft 252 is hinged to the moving column 253. A vertical sliding groove 255 is correspondingly provided in the lower housing 26. 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 outside the lower housing 26.

[0064] A lock hole 263 is provided on the lower housing 26 corresponding to the locking block 21. The locking end of the locking shaft 252 for locking extends into the lock hole 263. A guiding surface 2521 is provided on the locking shaft 252 located in the lock hole 263. When the locking block 21 is pressed down, the locking shaft 252 is elastically restored by the force received through the guiding surface 2521.

[0065] The pulling component 1 includes a support seat 13 installed on the pulling frame 5. An adjusting screw 12 is installed on the support seat 13. A moving seat 15 in sliding fit is also installed on the support seat 13. A nut adapted to the adjusting screw 12 is installed at one end of the moving seat 15. A wire clamping wheel 14 is elastically installed at the end of the moving seat 15 away from the nut.

[0066] One of the wire clamping wheels 14 is a driving wheel. A ratchet wrench 16 is installed at the upper end of the driving wheel through a screw. The driving wheel is driven to rotate through the ratchet wrench 16, so as to pull the high-voltage wire.

[0067] A hand wheel 11 is installed at one end of the adjusting screw 12. The hand wheel 11 is used to rotate the adjusting screw 12 so that the moving seat 15 moves. The threads at both ends of the adjusting screw 12 are arranged in opposite directions, so that the moving seat 15 moves inwards or outwards synchronously when rotating.

[0068] The positioning component 3 is arranged with the same structure as the pulling component 1. The wire clamping wheel 14 in the positioning component 3 is arranged for one-way rotation; the one-way rotation can be realized by using a ratchet inside the rear wheel of an existing bicycle.

[0069] A sliding frame 31 is installed between the positioning component 3 and the pulling frame 5. The sliding frame 31 is slidably connected to the pulling frame 5.

[0070] Working process:

[0071] Step 1: First, adjust the wire clamping wheels 14 in the pulling component 1 and the positioning component 3 to appropriate positions through the handwheels at both ends. Pull this device to the line tower through rigging. Press the control button 256, so that the moving column 253 moves towards one end in the sliding groove 255. At this time, the moving 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 shafts 252 slide out of the locking holes 211, the return spring 262 pops out the hinge block 261. At the same time, the hinge block drives the upper housing 23 to move upward, thus opening the clamping component 2.

[0072] Step 2: Place the high-voltage wire between the two wire clamping wheels in the positioning component 3 and the pulling component. Lock the wire clamping wheels by rotating the handwheel. After locking, buckle the upper housing 23. At the same time, press the upper housing 23. At this time, the hinge block 261 slides into the lower housing 26. When the hinge point enters the lower housing 26, the locking block 21 enters the locking hole 263. During the continuous pressing process, the control button 256 can be pressed or the locking shaft 252 can be rebounded through the guiding surface 2521. When the locking hole 211 reaches the position, release the control button 256, and the locking shaft 252 enters the locking hole 211, thus realizing the quick locking of the clamping component.

[0073] Step 3: Rotate the ratchet wrench 16 to drive one wire clamping wheel 14 of the pulling component 1 to rotate, thereby pulling the high-voltage wire. When there is no force applied, the one-way rotating wire clamping wheel in the positioning component 3 locks the high-voltage wire, thus preventing the high-voltage wire from retracting. During the pulling process, the one-way rotating wheel 241 in the wheel group clamping mechanism 24 rotates by fitting to the high-voltage wire through the elastic force of the spring member 243. When there is no force applied, the one-way rotating wheel 241 and the one-way rotating wire clamping wheel in the positioning component 3 lock simultaneously. However, due to the slidable reason of the sliding seat 244, at this time, the one-way rotating wheel 241 does not provide locking force, which is mainly realized by the one-way rotating wire clamping wheel in the positioning component 3. At this time, the detecting member 41 in the tensile force detector can measure, and the data can be viewed through the digital display 42. When the corresponding value is reached, the high-voltage wire can be fixed.

[0074] Working principle:

[0075] When the one-way rotating wire clamping wheel in the positioning component 3 slides, the high-voltage wire cannot be effectively locked. At this time, the one-way rotating wheel 241 in the wheel group clamping mechanism 24 drives the sliding seat 244 to move towards one end. The moving seat 15 pulls the clamping tile 221 in the parallelogram clamping mechanism 22 to lock through the pull rod 28, thus realizing stable locking.

[0076] In the present invention, the description of the directions and relative position relationships of the structures, such as the descriptions of front, back, left, right, up, and down, does not constitute a limitation to 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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