Cable tensioning device for power construction

Abstract

The invention relates to the technical field of power construction, and discloses a cable tensioning device for power construction, which comprises a mounting back plate, a locking mechanism is arranged on the back surface of the mounting back plate, and a distance adjusting mechanism and two groups of symmetrically distributed conveying tensioning mechanisms are arranged on the front surface of the mounting back plate. The two sets of conveying tensioning mechanisms are in transmission connection with the interval adjusting mechanism and can be driven by the interval adjusting mechanism to synchronously move towards the inner side or the outer side. According to the cable tensioning device for power construction, the two sets of conveying tensioning mechanisms are driven by the distance adjusting mechanism to synchronously move towards the inner side, a cable can be clamped between the two sets of conveying tensioning mechanisms, and the cable can be stably clamped through a plurality of clamping parts at the corresponding positions in the two sets of conveying tensioning mechanisms; and the hand wheel drives the conveying chain wheel, the conveying chain and the clamping component to rotate to convey the cable, so that the cable is tensioned, and the operation is simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of power construction technology, specifically a cable tensioning device for power construction. Background Technology

[0002] Power engineering is related to the production, transmission, and distribution of electrical energy. When carrying out power construction, in order to ensure the safety and standardization of cable laying, workers often need to erect cables at high places and tighten them to prevent short circuits caused by unstable swaying or contact between cables during use.

[0003] In existing technologies, cable tensioning devices used for cable erection are mostly of the form of winding tensioning or conveying tensioning. Winding tensioning uses a rotatable winding drum to wind the cable, thereby tightening the cable between two poles. However, during subsequent erection, the wound cable needs to be unwound, and each tensioning operation must be performed along the cable end, making the operation cumbersome, as illustrated by the cable tensioning device for high-altitude power construction disclosed in patent CN114389220B. Conveying tensioning typically uses a conveying mechanism consisting of two symmetrically arranged sets of conveyor wheels, with the cable clamped between them, such as... Figure 11 As shown, the cable is tensioned by conveying it through a conveyor wheel. However, only the tangential portion of the conveyor wheel's circumference contacts the cable, resulting in limited contact. When the clamping force of the conveyor wheel is low, the friction between the wheel and the cable is also low, making it insufficient for proper cable transport. Increasing the clamping force to improve friction can lead to damage to the cable sheath, causing insulation failure. Therefore, we propose a cable tensioning device for power construction to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a cable tensioning device for power construction, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable tensioning device for power construction, comprising a mounting back plate, a locking mechanism provided on the back of the mounting back plate, a spacing adjustment mechanism and two symmetrically distributed conveying tensioning mechanisms provided on the front of the mounting back plate, wherein the two conveying tensioning mechanisms are connected to the spacing adjustment mechanism in a transmission manner, and the two conveying tensioning mechanisms can move synchronously inward or outward under the drive of the spacing adjustment mechanism; The conveying tensioning mechanism includes a conveying frame, on which several conveying sprockets are movably mounted, and a conveying chain is fitted around the outside of the conveying sprockets. Several clamping components are connected end to end on the periphery of the conveying chain. The clamping component includes a connecting bracket fixedly connected to the conveyor chain, a connecting base plate fixedly installed on the connecting bracket, a guide rod fixedly installed on the connecting base plate, and two clamping seats movably fitted on the guide rod. The inner sides of both clamping seats are provided with inclined surfaces, and rubber pads are provided on the inclined surfaces. A ball bearing push rod is provided on the clamping seat near the mounting back plate. An adjusting plate that cooperates with the ball bearing push rod is fixedly installed on the mounting back plate. A connecting rod assembly is provided at the bottom of the two clamping seats, and the two clamping seats are connected by the connecting rod assembly.

[0006] Preferably, the locking mechanism includes a bidirectional adjusting screw 2 movably mounted on the mounting back plate and two sets of symmetrically arranged locking clips. One end of each set of locking clips abuts against the back of the mounting back plate, and both sets of locking clips are threadedly connected to the bidirectional adjusting screw 2. Rotating the bidirectional adjusting screw 2 can drive the two sets of locking clips to move synchronously inward or outward, thereby realizing the installation and removal of the device on structures such as utility poles or aerial work platforms.

[0007] Preferably, the spacing adjustment mechanism includes a bidirectional adjusting screw 1 movably mounted on the mounting back plate, a guide rail fixedly mounted on the mounting back plate, and a guide sleeve fixedly mounted on the conveyor frame. The conveyor frame is movably mounted on the mounting back plate via the guide sleeve and the guide rail, and the conveyor frame is threadedly connected to the bidirectional adjusting screw 1. Rotating the bidirectional adjusting screw 1 can drive the two sets of conveying tensioning mechanisms to move synchronously inward or outward, and the spacing between the two sets of conveying tensioning mechanisms can be adaptively adjusted according to the diameter of the cable.

[0008] Preferably, a handwheel is fixedly connected to the conveyor sprocket at any end of any of the conveyor tensioning mechanisms, and the handwheel is located at the end of the conveyor sprocket away from the mounting back plate. A locking knob is threaded onto the handwheel. After the cable is conveyed and tensioned in place, the locking knob is rotated to tighten the conveyor frame, which can restrict the position of the handwheel, conveyor sprocket, conveyor chain and clamping components to prevent the cable from loosening.

[0009] Preferably, the conveyor chain is composed of several outer chain plates connected by pins and several inner chain plates connected by pins in an alternating manner. The connecting bracket is snapped onto the outside of the outer chain plate and fixedly fitted onto the end of the pin, ensuring that the clamping component is firmly connected on the conveyor chain and that the clamping component can rotate stably with the conveyor chain to achieve continuous conveying and tensioning of the cable.

[0010] Preferably, the inclined surfaces on the two clamping seats in the clamping component are combined to form a "V" shape. A screw is inserted through the rubber pad, and the rubber pad is fixedly installed on the inclined surface of the clamping seat by the screw. The rubber pad is placed on the clamping seat, and the rubber pad can fully contact the cable when squeezed, providing sufficient friction for cable conveying and tightening.

[0011] Preferably, the linkage assembly includes a central linkage and two side linkages. The central linkage is hinged to the side linkages. The central linkage is located between the two assembly clamps and is movably mounted on the connecting bracket. One end of the side linkage is movably connected to the middle of the bottom end of the clamp. When the ball bearing push rod is restricted by the adjusting plate and drives one assembly clamp to move, the other assembly clamp can be moved synchronously through the linkage assembly transmission.

[0012] Preferably, the adjusting plate is located between the two sets of conveying and tensioning mechanisms. The adjusting plate has two sets of inclined surfaces that cooperate with the ball top rods in the two sets of conveying and tensioning mechanisms. The inclined surfaces are generally set with a higher middle and lower edges. The two ends of the adjusting plate are provided with guide arc surfaces that cooperate with the ball top rods. When the clamping component rotates to the position of the adjusting plate, it is guided by the guide arc surfaces to ensure that the ball top rod can slide smoothly onto the inclined surface of the adjusting plate.

[0013] Preferably, the guide rod is externally fitted with a return spring, and the return spring is located on the outer side of the clamping seat. The return spring always applies elastic force to the clamping seat. In the initial stage, the two clamping seats are closed by the elastic force of the return spring, which facilitates the positioning of the cable during initial installation.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. This cable tensioning device for power construction uses a spacing adjustment mechanism to drive two sets of conveying tensioning mechanisms to move synchronously inward. The cable can be clamped between the two sets of conveying tensioning mechanisms. Several clamping components at corresponding positions in the two sets of conveying tensioning mechanisms can stably clamp the cable. The handwheel drives the conveying sprocket, conveying chain, and clamping components to rotate, thereby conveying and tightening the cable. The operation is simple and can provide sufficient friction for cable conveying and tightening, while avoiding damage to the cable due to excessive local friction.

[0015] 2. The cable tensioning device for power construction uses V-shaped clamping seats in the clamping components to stably clamp cables of different diameters through the cooperation of the clamping seats in two sets of conveying and tensioning mechanisms. Rubber pads are set on the clamping seats, and the rubber pads can fully contact the cables when compressed, providing sufficient friction for cable conveying and tensioning.

[0016] 3. The cable tensioning device used in power construction, when adjusting the distance between the two sets of conveying tensioning mechanisms through the distance adjustment mechanism, restricts the ball bearing rod on the clamping component by the inclined surface on the adjustment plate. At the same time, the two sets of clamping seats are driven by the connecting rod assembly, so that the two sets of conveying tensioning mechanisms can simultaneously adjust the separation degree of the two sets of clamping seats in the clamping component while adjusting the distance, thereby achieving stable clamping of cables of different diameters and improving the stability of cable conveying tensioning. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall assembled structure of the present invention; Figure 2 This is a schematic diagram of the structure in the end direction of the present invention; Figure 3 This is a schematic diagram of the locking mechanism in this invention; Figure 4 This is a schematic diagram of the spacing adjustment mechanism in this invention; Figure 5 This is a schematic diagram of the conveying and tensioning mechanism in this invention; Figure 6 This is a schematic diagram of the installation position of the clamping component in this invention; Figure 7 This is a schematic diagram of the clamping component in this invention; Figure 8 This is a schematic diagram of the structure of the bottom of the clamping base in this invention; Figure 9 This is a schematic diagram of the connection between the clamping seat and the rubber pad in this invention; Figure 10 This is a schematic diagram of the ball screw in this invention; Figure 11 This is a schematic diagram of the conveyor wheel in a conventional conveyor tensioning mechanism.

[0018] In the diagram: 1. Mounting backplate; 2. Spacing adjustment mechanism; 21. Bidirectional adjusting screw one; 22. Guide slide rail; 23. Guide sleeve; 3. Conveyor tensioning mechanism; 31. Conveyor frame; 32. Conveyor sprocket; 33. Conveyor chain; 34. Clamping component; 341. Connecting bracket; 342. Connecting base plate; 343. Guide rod; 344. Return spring; 345. Clamping seat; 346. Rubber pad; 347. Linkage assembly; 348. Ball bearing top rod; 4. Adjusting plate; 5. Locking mechanism; 51. Bidirectional adjusting screw two; 52. Locking clamp; 6. Handwheel. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 10In this embodiment of the invention, a cable tensioning device for power construction includes a mounting back plate 1. A locking mechanism 5 is provided on the back of the mounting back plate 1, and a spacing adjustment mechanism 2 and two sets of symmetrically distributed conveying tensioning mechanisms 3 are provided on the front of the mounting back plate 1. The two sets of conveying tensioning mechanisms 3 are connected to the spacing adjustment mechanism 2 in a transmission manner. The two sets of conveying tensioning mechanisms 3 can move synchronously inward or outward under the drive of the spacing adjustment mechanism 2. By driving the two sets of conveying tensioning mechanisms 3 to move synchronously inward through the spacing adjustment mechanism 2, the cable can be clamped between the two sets of conveying tensioning mechanisms 3. The cable can be stably clamped by a number of clamping components 34 at corresponding positions in the two sets of conveying tensioning mechanisms 3. The conveying and tensioning mechanism 3 includes a conveying frame 31, on which several conveying sprockets 32 are movably mounted, and a conveying chain 33 is meshed around the outside of the conveying sprockets 32. Several clamping components 34 are connected end to end around the conveying chain 33. By driving the conveying sprockets 32, the conveying chain 33 and the clamping components 34 to rotate, the cable is conveyed and the cable is tightened. The operation is simple and can provide sufficient friction for cable conveying and tensioning. The clamping component 34 includes a connecting bracket 341 fixedly connected to the conveyor chain 33, a connecting base plate 342 fixedly installed on the connecting bracket 341, a guide rod 343 fixedly installed on the connecting base plate 342, and two assemblies of clamping seats 345 movably fitted onto the guide rod 343. The inner surfaces of both assemblies of clamping seats 345 are provided with inclined surfaces. The clamping seats 345 in the clamping component 34 are arranged in a V-shape. The clamping seats 345 in the two sets of conveying tensioning mechanisms 3 can cooperate to stably clamp cables of different diameters. Rubber pads 346 are provided on the inclined surfaces. When compressed, the rubber pads 346 can fully contact the cable, providing sufficient tension for cable conveying. Due to friction, a ball bearing push rod 348 is provided on the clamping seat 345 near the mounting back plate 1. An adjusting plate 4 that cooperates with the ball bearing push rod 348 is fixedly installed on the mounting back plate 1. A connecting rod assembly 347 is provided at the bottom of the two assembly clamping seats 345, and the two assembly clamping seats 345 are connected by the connecting rod assembly 347. The ball bearing push rod 348 on the clamping component 34 is restricted by the inclined surface on the adjusting plate 4. At the same time, the two assembly clamping seats 345 are driven by the connecting rod assembly 347, so that the two sets of conveying tensioning mechanisms 3 can simultaneously adjust the separation degree of the two assembly clamping seats 345 in the clamping component 34 while adjusting the spacing, so as to achieve stable clamping of cables of different diameters.

[0021] As a further embodiment of the above invention: the locking mechanism 5 includes a bidirectional adjusting screw 51 movably mounted on the mounting back plate 1 and two sets of symmetrically arranged locking clips 52. One end of each set of locking clips 52 abuts against the back of the mounting back plate 1, restricting the position of the locking clips 52 and preventing the locking clips 52 from rotating axially along the bidirectional adjusting screw 51. This ensures that the locking clips 52 can move stably under the drive of the bidirectional adjusting screw 51. Both sets of locking clips 52 are threadedly connected to the bidirectional adjusting screw 51. Rotating the bidirectional adjusting screw 51 can drive the two sets of locking clips 52 to move synchronously inward or outward, realizing the installation and removal of the device on structures such as utility poles or aerial work platforms.

[0022] As a further embodiment of the above invention: the spacing adjustment mechanism 2 includes a bidirectional adjusting screw 21 movably mounted on the mounting back plate 1, a guide rail 22 fixedly mounted on the mounting back plate 1, and a guide sleeve 23 fixedly mounted on the conveyor frame 31. The conveyor frame 31 is movably mounted on the mounting back plate 1 through the guide sleeve 23 and the guide rail 22. The guide rail 22 and the guide sleeve 23 cooperate to restrict the conveying tensioning mechanism 3, ensuring that the conveying tensioning mechanism 3 is firmly connected to the mounting back plate 1 and can move stably. The conveyor frame 31 is threadedly connected to the bidirectional adjusting screw 21. Rotating the bidirectional adjusting screw 21 can drive the two sets of conveying tensioning mechanisms 3 to move synchronously inward or outward, and the spacing between the two sets of conveying tensioning mechanisms 3 can be adaptively adjusted according to the diameter of the cable.

[0023] As a further embodiment of the above invention: a handwheel 6 is fixedly connected to the conveyor sprocket 32 ​​at any end of any conveyor tensioning mechanism 3, and the handwheel 6 is located at the end of the conveyor sprocket 32 ​​away from the mounting back plate 1. The handwheel 6 can drive the conveyor sprocket 32, conveyor chain 33 and clamping component 34 in a set of conveyor tensioning mechanisms 3 to rotate. Several clamping components 34 in one set of conveyor tensioning mechanisms 3 serve as driving structures, and several clamping components 34 in another set of conveyor tensioning mechanisms 3 serve as driven structures to convey and tension the cable. A locking knob is threaded on the handwheel 6. After the cable is conveyed and tensioned in place, the locking knob is rotated to tighten the conveyor frame 31, which can restrict the position of the handwheel 6, conveyor sprocket 32, conveyor chain 33 and clamping component 34 to prevent the cable from loosening.

[0024] As a further embodiment of the above invention: the conveyor chain 33 is composed of several outer chain plates connected by pins and several inner chain plates connected by pins in an alternating manner. The connecting bracket 341 is snapped onto the outside of the outer chain plate and fixedly fitted onto the end of the pin, ensuring that the clamping component 34 is firmly connected to the conveyor chain 33. The clamping component 34 can rotate stably with the conveyor chain 33 to realize continuous conveying and tensioning of the cable. At the same time, the cable can be clamped by several clamping components 34 in the two sets of conveying and tensioning mechanisms 3 per unit time, providing sufficient friction for the cable.

[0025] As a further embodiment of the above invention: the inclined surfaces on the two clamping seats 345 in the clamping component 34 are combined to form a "V" shape, which can stably clamp cables of different diameters through the clamping components 34 at corresponding positions in the two sets of conveying and tightening mechanisms 3. The rubber pad 346 is provided with screws, and the rubber pad 346 is fixedly installed on the inclined surface of the clamping seat 345 by screws. The rubber pad 346 is provided on the clamping seat 345. When the rubber pad 346 is squeezed, it can fully contact the cable and provide sufficient friction for cable conveying and tightening.

[0026] As a further embodiment of the above invention: the linkage assembly 347 includes a set of central linkages and two sets of side linkages. The central linkage is hinged to the side linkages. Through the transmission between the central linkage and the side linkages, the two assembly clamps 345 can move synchronously. The central linkage is located between the two assembly clamps 345 and is movably mounted on the connecting bracket 341. One end of the side linkage is movably connected to the middle of the bottom end of the clamping seat 345. Since one assembly clamp 345 in the clamping component 34 is provided with a ball top rod 348, when the ball top rod 348 is restricted by the adjusting plate 4 and drives one assembly clamp 345 to move, the other assembly clamp 345 can be moved synchronously through the transmission of the linkage assembly 347, so as to realize the synchronous adjustment of the two assembly clamps 345.

[0027] As a further embodiment of the above invention: the adjusting plate 4 is located between the two sets of conveying and tensioning mechanisms 3. The adjusting plate 4 has two sets of inclined surfaces that cooperate with the ball top rods 348 in the two sets of conveying and tensioning mechanisms 3. The inclined surfaces are set with the middle being higher and the edges being lower. When the clamping component 34 rotates to the position of the adjusting plate 4, the inclined surfaces on the adjusting plate 4 restrict the ball top rods 348 in the clamping component 34, so that the two sets of conveying and tensioning mechanisms 3 can simultaneously adjust the separation degree of the two sets of clamping seats 345 in the clamping component 34 while adjusting the spacing, so as to achieve stable clamping of cables of different diameters. The two ends of the adjusting plate 4 are provided with guide arc surfaces that cooperate with the ball top rods 348. When the clamping component 34 rotates to the position of the adjusting plate 4, the guide arc surfaces guide the ball top rods 348 to slide smoothly onto the inclined surfaces of the adjusting plate 4.

[0028] As a further embodiment of the above invention: a return spring 344 is movably mounted on the outside of the guide rod 343, and the return spring 344 is located on the outer side of the clamping seat 345. The return spring 344 always applies a spring force to the clamping seat 345. By applying a spring force to the clamping seat 345 through the return spring 344, it is easy for the two clamping seats 345 to be reset. At the same time, in the initial stage, the two clamping seats 345 are closed by the spring force of the return spring 344, which is convenient for positioning the cable during the initial installation.

[0029] In practical implementation: The device is installed on the cable-laying pole or the cable-laying platform via the locking mechanism 5. Rotating the bidirectional adjusting screw 21 drives the two sets of locking clamps 52 to move inward synchronously, clamping the pole or platform. When cable laying requires tensioning, the cable is clamped in the clamping component 34 between the two sets of conveying tensioning mechanisms 3. Rotating the bidirectional adjusting screw 21 drives the two sets of conveying tensioning mechanisms 3 to move inward synchronously, and positioning is achieved through the cooperation of the guide rail 22 and the guide sleeve 23 during the movement of the conveying tensioning mechanisms 3. While the lead screw 21 rotates to adjust the distance between the two sets of conveying tensioning mechanisms 3, the relative position of the ball top rod 348 and the adjusting plate 4 in the clamping component 34 changes as the conveying tensioning mechanism 3 moves. When the clamping component 34 on the conveying chain 33 rotates to the position of the adjusting plate 4, the ball top rod 348 on the clamping component 34 is restricted by the different positions of the inclined surface of the adjusting plate 4. The ball top rod 348 is restricted by the inclined surface of the adjusting plate 4, which drives the clamping seat 345 to move. The two clamping seats 345 are connected by a connecting rod assembly 347, so that the two sets of conveying tensioning mechanisms 3 clamp the components while adjusting the distance. The clamping base 345 in 34 can also be adjusted dynamically, so that the spacing between the clamping components 34 in the two sets of conveying tensioning mechanisms 3 and the spacing between the two sets of clamping bases 345 in the clamping components 34 can be adaptively adjusted according to the diameter of the cable. The clamping bases 345 in the two sets of clamping components 34 are distributed in a V-shape, and rubber pads 346 are provided on the clamping bases 345. When the clamping bases 345 are squeezed, the rubber pads 346 deform and make full contact with the cable. Moreover, within a unit time, several corresponding sets of clamping components 34 in the two sets of conveying tensioning mechanisms 3 can clamp the cable, providing sufficient friction for cable conveying and tensioning. Force; after clamping the cable, the handwheel 6 drives the conveyor sprocket 32 ​​and conveyor chain 33 in a set of conveying and tensioning mechanisms 3 to rotate, and the conveyor chain 33 drives several clamping components 34 to rotate. Several clamping components 34 in one set of conveying and tensioning mechanisms 3 serve as driving structures, and several clamping components 34 in another set of conveying and tensioning mechanisms 3 serve as driven structures to convey and tension the cable. After the cable is conveyed and tensioned in place, the locking knob on the handwheel 6 is turned to press against the side of the conveyor frame 31 to lock the position of the handwheel 6, the conveyor chain 33, and the clamping components 34, so as to prevent the tensioned cable from loosening.

[0030] It will be apparent 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 invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cable tensioning device for power construction, comprising a mounting back plate (1), wherein a locking mechanism (5) is provided on the back of the mounting back plate (1), characterized in that: The front of the mounting back plate (1) is provided with a spacing adjustment mechanism (2) and two sets of symmetrically distributed conveying and tensioning mechanisms (3), and the two sets of conveying and tensioning mechanisms (3) are connected to the spacing adjustment mechanism (2) in a transmission manner. The two sets of conveying and tensioning mechanisms (3) can move synchronously to the inside or outside under the drive of the spacing adjustment mechanism (2). The conveying tensioning mechanism (3) includes a conveying frame (31), on which a number of conveying sprockets (32) are movably mounted, and a conveying chain (33) is meshed on the outside of the conveying sprockets (32). A number of clamping components (34) are connected end to end on the periphery of the conveying chain (33). The clamping component (34) includes a connecting bracket (341) fixedly connected to the conveyor chain (33), a connecting base plate (342) fixedly installed on the connecting bracket (341), a guide rod (343) fixedly installed on the connecting base plate (342), and two assembly clamps (345) movably fitted on the guide rod (343). The inner sides of the two sets of clamps (345) are provided with inclined surfaces, and rubber pads (346) are provided on the inclined surfaces. A ball top rod (348) is provided on the clamping seat (345) near the mounting back plate (1). An adjusting plate (4) that cooperates with the ball top rod (348) is fixedly installed on the mounting back plate (1). A connecting rod assembly (347) is provided at the bottom of the two sets of clamps (345), and the two assembly clamps (345) are connected by the connecting rod assembly (347).

2. The cable tensioning device for power construction according to claim 1, characterized in that: The locking mechanism (5) includes a bidirectional adjusting screw (51) movably mounted on the mounting back plate (1) and two sets of symmetrically arranged locking clips (52). One end of each set of locking clips (52) abuts against the back of the mounting back plate (1), and both sets of locking clips (52) are threadedly connected to the bidirectional adjusting screw (51).

3. A cable tensioning device for power construction according to claim 1, characterized in that: The spacing adjustment mechanism (2) includes a bidirectional adjusting screw (21) movably mounted on the mounting back plate (1), a guide slide rail (22) fixedly mounted on the mounting back plate (1), and a guide sleeve (23) fixedly mounted on the conveyor frame (31). The conveyor frame (31) is movably mounted on the mounting back plate (1) through the guide sleeve (23) and the guide slide rail (22), and the conveyor frame (31) is threadedly connected to the bidirectional adjusting screw (21).

4. A cable tensioning device for power construction according to claim 1, characterized in that: A handwheel (6) is fixedly connected to the conveyor sprocket (32) at any end of any of the conveyor tensioning mechanisms (3), and the handwheel (6) is located at the end of the conveyor sprocket (32) away from the mounting back plate (1), and a locking knob is threaded onto the handwheel (6).

5. A cable tensioning device for power construction according to claim 1, characterized in that: The conveyor chain (33) is composed of several outer chain plates connected by pins and several inner chain plates connected by pins in an alternating manner. The connecting bracket (341) is snapped onto the outside of the outer chain plate and fixedly fitted onto the end of the pin.

6. A cable tensioning device for power construction according to claim 1, characterized in that: The inclined surfaces on the two clamping seats (345) in the clamping component (34) are combined to form a "V" shape. The rubber pad (346) is provided with screws, and the rubber pad (346) is fixedly installed on the inclined surface of the clamping seat (345) by screws.

7. A cable tensioning device for power construction according to claim 1, characterized in that: The linkage assembly (347) includes a set of central linkages and two sets of side linkages. The central linkage is hinged to the side linkages. The central linkage is located between two mounting clamps (345) and is movably mounted on the connecting bracket (341). One end of the side linkage is movably connected to the middle of the bottom end of the mounting clamp (345).

8. A cable tensioning device for power construction according to claim 1, characterized in that: The adjusting plate (4) is located between the two sets of conveying and tensioning mechanisms (3). The adjusting plate (4) has two sets of inclined surfaces that cooperate with the ball top rods (348) in the two sets of conveying and tensioning mechanisms (3). The inclined surfaces are set with the middle being higher and the edges being lower. The two ends of the adjusting plate (4) are provided with guide arc surfaces that cooperate with the ball top rods (348).

9. A cable tensioning device for power construction according to claim 1, characterized in that: The guide rod (343) is externally fitted with a return spring (344), and the return spring (344) is located on the outer side of the clamping seat (345). The return spring (344) always applies a spring force to the clamping seat (345).

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