CN117810858A - Cable tightening device for power construction - Google Patents

Abstract

The invention relates to the technical field of power construction and discloses a cable tightening device for power construction. The wire tightening device aims at solving the technical problems that the existing wire tightening device is complex in operation and low in efficiency. The invention provides a cable tightening device for electric power construction, which comprises a shell, wherein the shell is hinged with a fixing frame, the shell is provided with a motor, an output shaft of the motor is fixedly connected with a lead screw, the lead screw is in threaded connection with a reciprocating block, the shell is in sliding connection with a connecting shell, the connecting shell is in sliding connection with a telescopic block, the connecting shell is in sliding connection with a lower extrusion block, the lower extrusion block is in sliding connection with an upper extrusion block, the lower extrusion block and the upper extrusion block are in sliding connection with clamping columns, the shell is in sliding connection with a sliding frame, and the sliding frame is in sliding connection with main clamping pieces which are symmetrically distributed. According to the invention, the cable is tensioned through the reciprocating movement of the main clamping piece, so that the workload is reduced, and the wire tightening efficiency is improved.

Description

Cable tightening device for power construction

Technical Field

The invention relates to the technical field of power construction and discloses a cable tightening device for power construction.

Background

Along with the rapid increase of the economy in China, the electricity consumption of people is larger and larger, so that more power transmission lines are required to be laid, the tightening operation of the cable is particularly important when the power transmission lines are constructed, the cable is easy to stretch out due to the fact that the cable is too tight, and the cable is easy to shake and even intertwine when the cable is loose.

At present, when the wire tightening operation is carried out, the conventional ratchet tightening device is adopted for the wire tightening operation, when the wire tightening device is used, the wire rope on the tightening device is required to be loosened and fixed on the cross arm, the end part of a cable is clamped by the wire clamping pliers, then the wire tightening wrench is moved, the wire rope is wound on the roller through the anti-reversion function of the ratchet to tighten the cable, the wire tightening mode is complex in operation steps, and when a longer cable is encountered, the expected wire tightening effect can be achieved only by switching the clamping points of the cable for many times, so that the cable tightening efficiency is low.

Disclosure of Invention

The invention provides a cable tightening device for power construction, which aims to overcome the defects of complicated operation and low efficiency of the traditional tightening device.

The utility model provides a cable tightening device for electric power construction, includes the casing, the casing articulates there is the mount, the casing is close to one side of mount is installed the motor, the output shaft rigid coupling of motor have with the lead screw that the casing rotates to be connected, the lead screw keep away from one side threaded connection of mount have with casing sliding connection's reciprocating block, casing sliding connection has the connection shell, connection shell sliding connection have with reciprocating block spacing complex expansion block, connection shell with the rigid coupling has the spring between the expansion block, connection shell sliding connection has down the extrusion piece, lower extrusion piece sliding connection has last extrusion piece, the rigid coupling has the extension spring between the two, down extrusion piece with go up between the extrusion piece common sliding connection has the screens post, the casing sliding connection have with go up extrusion piece extrusion complex carriage, carriage sliding connection has the spring of symmetric distribution, the rigid coupling has the spring between the two, down extrusion piece with go up extrusion piece respectively with adjacent main clamping piece extrusion cooperation, the carriage is provided with the stop gear, the casing has the setting tension mechanism, the casing has continuous adjustment mechanism.

The preferable technical scheme, stop gear is including spacing post, spacing post sliding connection in the carriage, spacing post with the rigid coupling has the spring between the carriage, the casing be provided with spacing complex recess of spacing post.

The preferable technical scheme, the continuous mechanism is including first hydraulic cylinder, first hydraulic cylinder rigid coupling in the casing, sliding connection has the push rod in the first hydraulic cylinder, the push rod with rigid coupling has the spring between the first hydraulic cylinder, the push rod with down squeeze the piece extrusion cooperation, keep away from in the first hydraulic cylinder one side sliding connection of extrusion piece down has the piston, first hydraulic cylinder with the piston cooperation forms the holding power cavity, the first hydraulic cylinder with the rigid coupling has the spring between the piston, first hydraulic cylinder rigid coupling has first hydraulic stem, the flexible end of first hydraulic stem with the spacing cooperation of push rod, the casing rigid coupling has the second hydraulic stem, the rigid coupling has the spring in the second hydraulic stem, first hydraulic stem with through the pipe intercommunication between the second hydraulic stem and the pipe in all deposit, the flexible end of second hydraulic stem is close to one side rigid coupling of carriage has the elastic disc, the elastic disc is close to the second hydraulic stem has the wedge block, the second hydraulic stem is close to the casing and is provided with the tight wedge, the wedge is pressed from both sides the wedge block with the cable setting up and is pressed from both sides the tight.

The preferred technical scheme, back clamping assembly is including down the clamping piece, down clamping piece sliding connection in the casing, the casing rigid coupling has the support, support sliding connection has the clamping piece, the support with the rigid coupling has the spring between the clamping piece, the support rigid coupling has the third hydraulic stem, the third hydraulic stem pass through the pipe with the hold power cavity intercommunication of first hydraulic cylinder, just all deposit hydraulic oil in the pipe between third hydraulic stem and the hold power cavity of first hydraulic cylinder and the two, the flexible end rigid coupling of third hydraulic stem has back extrusion piece, back extrusion piece with go up clamping piece extrusion fit, the support rigid coupling has the fourth hydraulic stem, the flexible end of fourth hydraulic stem with the flexible end limit fit of third hydraulic stem, the support rigid coupling has the fifth hydraulic stem, the rigid coupling has the spring in the fifth hydraulic stem with the fourth hydraulic stem passes through the pipe intercommunication, fourth hydraulic stem with the flexible end of fourth hydraulic stem and the flexible end of fifth hydraulic stem and the pressure stem have the extrusion piece to be connected with the casing in the flexible end limit fit.

The tension adjusting mechanism comprises symmetrically distributed friction plates, the symmetrically distributed friction plates are respectively and slidably connected with adjacent main clamping pieces, a second hydraulic cylinder is fixedly connected with the friction plates, the second hydraulic cylinder is slidably connected with the adjacent main clamping pieces, and springs are fixedly connected between the second hydraulic cylinder and the adjacent main clamping pieces.

The preferred technical scheme, the second hydraulic cylinder cooperates with adjacent main clamping piece and forms the pressurization cavity, the push rod be provided with the through-hole of first hydraulic cylinder hold power cavity intercommunication, the pressurization cavity of second hydraulic cylinder with through-hole through the pipe intercommunication of push rod, the pressurization cavity of second hydraulic cylinder, the through-hole of push rod and the pipe between the two are interior all to have deposited hydraulic oil.

The preferable technical scheme is that the cable tension adjusting device further comprises a stopping mechanism arranged on the connecting shell, the stopping mechanism is used for stopping the tightening wire after the cable tension reaches a set value, the stopping mechanism comprises an unlocking block, the unlocking block is slidably connected with the connecting shell, springs are fixedly connected between the unlocking block and the connecting shell, symmetrically distributed positioning blocks are slidably connected with the connecting shell, springs are fixedly connected between the positioning blocks, the shell is provided with equidistant grooves matched with the positioning blocks, the unlocking block is in limit fit with the positioning blocks, the connecting shell is rotationally connected with an adjusting bolt, an extruding piece is in threaded connection with the adjusting bolt, a tension spring is fixedly connected between the extruding piece and the lower extruding block, and the lower extruding piece is in extrusion fit with the telescopic block.

According to the preferred technical scheme, the distance between the unlocking block and the telescopic block is smaller than the width of the sliding part of the lower extrusion block positioned in the connecting shell.

The preferred technical scheme still including set up in swing mechanism of casing, swing mechanism is used for making the casing follows cable swing, swing mechanism is including the support column down, the support column rotate connect in the casing, casing sliding connection has the support frame, the support frame rotates and is connected with the support column, the support frame rigid coupling has the detection piece, the detection piece with casing sliding connection, the detection piece with the rigid coupling has the extension spring between the casing, the casing rigid coupling has the sixth hydraulic stem, the flexible end of sixth hydraulic stem with the detection piece rigid coupling, sixth hydraulic stem intercommunication has the regulation pipe, the casing rotates and is connected with the winding axle, winding axle sliding connection has the passive piece, winding axle rigid coupling has the haulage rope, the haulage rope with the mount rigid coupling, the winding axle with the regulation pipe intercommunication, the casing is provided with and is used for the drive winding axle pivoted drive assembly.

The preferable technical scheme, the drive assembly is including the gyro wheel, the gyro wheel rotate connect in the casing, the casing rotates and is connected with the initiative post, the gyro wheel with haulage rope contact, initiative post with through bevel gear group transmission between the output shaft of motor, the casing rotates and is connected with the passive post, initiative post with pass through band pulley and belt transmission between the passive post, the passive post rigid coupling has the initiative piece, the initiative piece with passive piece extrusion fit.

The beneficial effects of the invention are as follows:

1. according to the invention, the cable is tensioned through the reciprocating movement of the main clamping piece, so that the workload is reduced, and the wire tightening efficiency is improved.

2. The main clamping piece and the upper clamping piece alternately clamp the cable, so that the main clamping piece can continuously tighten the cable in the reciprocating movement process, continuous operation is realized, and the working efficiency is improved.

3. The clamping force of the upper clamping piece on the cable is controlled by detecting the relative displacement between the main clamping piece and the friction plate, so that the cable is prevented from slipping due to insufficient clamping force or is prevented from being damaged due to overlarge clamping force.

4. The main clamping piece is prevented from being scratched with the cable during resetting by controlling the shell to swing upwards along with the cable, so that the cable skin is damaged.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the upper clamping member, the third hydraulic ram and the rear extrusion block of the present invention;

FIG. 3 is a schematic perspective view of the reciprocating block, connecting shell and telescopic block of the present invention;

FIG. 4 is a schematic perspective view of the positioning block, the adjusting bolt and the pressing piece according to the present invention;

FIG. 5 is a schematic perspective view of the lower squeeze block, the upper squeeze block and the clamping post of the present invention;

FIG. 6 is a schematic perspective view of a carriage and a stopper post according to the present invention;

FIG. 7 is a schematic perspective view of a push rod, piston and first hydraulic stem according to the present invention;

FIG. 8 is a schematic perspective view of the lower clamping member, upper clamping member and rear pressing block of the present invention;

FIG. 9 is a schematic perspective view of a second hydraulic ram, spring plate and wedge of the present invention;

FIG. 10 is a schematic perspective view of the primary clamping member, friction plate and secondary hydraulic cylinder of the present invention;

FIG. 11 is a schematic perspective view of the lower support column, support frame and upper support column of the present invention;

FIG. 12 is a schematic perspective view of the winding shaft, the driven block and the traction rope of the present invention;

fig. 13 is a schematic perspective view of the adjusting catheter, winding shaft and passive block of the present invention.

The reference symbols in the drawings: the device comprises a shell, a 2-fixing frame, a 3-motor, a 4-screw rod, a 5-reciprocating block, a 6-connecting shell, a 7-telescopic block, an 8-lower extrusion block, a 9-upper extrusion block, a 901-clamping column, a 10-sliding frame, a 11-main clamping piece, a 12-limit column, a 13-first hydraulic cylinder, a 14-push rod, a 15-piston, a 16-first hydraulic rod, a 17-second hydraulic rod, a 18-elastic piece, a 19-wedge block, a 20-lower clamping piece, a 21-bracket, a 22-upper clamping piece, a 23-third hydraulic rod, a 24-rear extrusion block, a 25-fourth hydraulic rod, a 26-fifth hydraulic rod, a 27-limit plate, a 28-friction plate, a 29-second hydraulic cylinder, a 30-unlocking block, a 31-positioning block, a 32-adjusting bolt, a 33-extrusion block, a 34-lower support column, a 35-support frame, a 36-upper support column, a 37-detecting block, a 38-sixth hydraulic rod, a 39-adjusting pipe, a 40-winding shaft, a 41-passive block, a 42-rope, a 43-44-passive block, a 43-passive block, a 45-passive block and a roller.

Detailed Description

The invention will be described in further detail with reference to the drawings and the detailed description. The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Example 1

A cable tightening device for electric power construction, as shown in figures 1-5, comprises a shell 1, wherein the right lower side of the shell 1 is hinged with a fixing frame 2, an included angle exists between the shell 1 and an electric pole, the right side of the fixing frame 2 is connected with two bolts in a threaded manner, the fixing frame 2 is fixed on a cross arm through the two bolts, the fixing frame 2 is arranged into a U shape and is sleeved on the cross arm to fix the shell 1, a motor 3 is installed at the lower part of the right side of the shell 1, an output shaft of the motor 3 is fixedly connected with a lead screw 4, the lead screw 4 is rotationally connected with the shell 1, the left part of the lead screw 4 is connected with a reciprocating block 5 in a threaded manner, the reciprocating block 5 is in sliding connection with the shell 1, the left part of the shell 1 is in sliding connection with a connecting shell 6, the lower side of the middle part of the connecting shell 6 is in sliding connection with a telescopic block 7, a spring is fixedly connected between the connecting shell 6 and the telescopic block 7, the upper side surface of the reciprocating block 5 is provided with a groove in limit fit with the telescopic block 7, the reciprocating block 5 and the telescopic block 7 limit and drive the extrusion block 8 to reciprocate through the connecting shell 6, the right part in the connecting shell 6 is slidingly connected with the lower extrusion block 8, the lower extrusion block 8 is slidingly connected with the upper extrusion block 9, the lower extrusion block 8 consists of a square block, an inclined block and a U-shaped frame, the U-shaped frame of the lower extrusion block 8 passes through the rear side of the shell 1 and is slidingly connected with the shell 1, the inclined block of the lower extrusion block 8 is used for extruding the adjacent main clamping pieces 11 towards the direction close to the cables, a plurality of round rollers distributed at equal intervals are arranged on the inclined surface side of the inclined block of the lower extrusion block 8, the lower extrusion block 8 and the adjacent main clamping pieces 11 are prevented from being difficult to separate due to the friction force of the extrusion surface, the upper extrusion block 9 consists of the inclined block, a square column and a hook rod, the square column of the upper extrusion block 9 slides in the U-shaped frame of the lower extrusion block 8, so that the cables are conveniently placed between the two main clamping pieces 11, a tension spring is fixedly connected between a square column of the upper extrusion block 9 and a U-shaped frame of the lower extrusion block 8 and is used for driving the upper extrusion block 9 to reset, a clamping column 901 is connected between the lower extrusion block 8 and the upper extrusion block 9 in a sliding way, the clamping column 901 limits the lower extrusion block 8 and the upper extrusion block 9 and prevents the lower extrusion block 8 and the upper extrusion block 9 from sliding relatively in the working process, a sliding frame 10 is connected in the middle part of the shell 1 in a sliding way, two main clamping pieces 11 which are distributed vertically symmetrically are connected in a sliding way with the sliding frame 10, the left part of the main clamping pieces 11 consists of a round rod, a half cylinder and a long oblique block, the half cylinder of the main clamping pieces 11 positions and clamps a cable to prevent the cable from sliding out, the oblique blocks of the long oblique blocks of the main clamping pieces 11, the oblique blocks of the lower extrusion block 8 and the oblique blocks of the upper extrusion block 9 are extruded, the left and right movement of the extrusion block 8 and the upper extrusion block 9 drives the two main clamping pieces 11 to move vertically, meanwhile, when the lower extrusion block 8 and the upper extrusion block 9 are used as main power, and the cable pulls the main clamping piece 11 leftwards, due to the action of the lower extrusion block 8 and the upper extrusion block 9, the clamping force of the main clamping piece 11 on the cable is increased, the stability of cable clamping is increased, a spring is fixedly connected between the main clamping piece 11 and the sliding frame 10, the main clamping piece 11 is not contacted with the cable under the action of the spring between the main clamping piece 11 and the sliding frame 10 at the beginning, the situation that the main clamping piece 11 is in contact with the cable along the way in the resetting process is avoided, the inclined blocks of the lower extrusion block 8 and the upper extrusion block 9 are respectively in extrusion fit with the strip inclined blocks of the adjacent main clamping piece 11, the hook rod of the upper extrusion block 9 is in extrusion fit with the sliding frame 10, the hook rod on the upper extrusion block 9 drives the sliding frame 10 leftwards to reset when the upper extrusion block 9 resets, the main clamping piece 11 is driven to reciprocate leftwards by starting the motor 3, the continuous tensioning of the cable is realized, the work load is reduced, the work efficiency is increased, the sliding frame 10 is provided with a limiting mechanism for ensuring that the main clamping piece 11 clamps the cable, the shell 1 is provided with a continuous mechanism for continuous operation, and the shell 1 is provided with a tension adjusting mechanism for adjusting the clamping force of the cable.

As shown in fig. 3 and 6, the limiting mechanism comprises a limiting column 12, the limiting column 12 is slidably connected to the left part of the front side of the sliding frame 10, a spring is fixedly connected between the limiting column 12 and the sliding frame 10, the force of the matching of the limiting column 12 and the groove of the shell 1 is larger than the elastic force of the spring between the main clamping piece 11 and the sliding frame 10, so that the main clamping piece 11 clamps a cable and then moves rightwards, the shell 1 is provided with the groove, the groove of the shell 1 is in limiting matching with the limiting column 12, and the limiting mechanism is used for preventing the main clamping piece 11 from sliding without clamping the cable when the lower extrusion block 8 and the upper extrusion block 9 extrude the upper main clamping piece 11 and the lower main clamping piece 11 towards the cable, so that the length of each reciprocating traction cable is reduced, and the working efficiency is reduced.

As shown in fig. 7-9, the continuous mechanism comprises a first hydraulic cylinder 13, the first hydraulic cylinder 13 is fixedly connected to the middle part of the rear side of the shell 1, a push rod 14 is slidably connected to the left part in the first hydraulic cylinder 13, the section of the push rod 14 is I-shaped, the right part of the push rod 14 slides in the first hydraulic cylinder 13, when the lower extrusion block 8 slides rightwards, the left part of the push rod 14 is extruded by the U-shaped frame of the lower extrusion block 8 to reduce the volume of the power storage cavity, when the main clamping piece 11 moves to the rightmost side, an upper clamping piece 22 is driven to clamp a cable to realize continuous line tightening, a spring is fixedly connected between the push rod 14 and the first hydraulic cylinder 13 for resetting the push rod 14 when the main clamping piece 11 starts to return to move downwards, a piston 15 is slidably connected to the middle part in the first hydraulic cylinder 13, a spring is fixedly connected between the push rod 13 and the push rod, the first hydraulic cylinder and the left side of the piston 15 are matched to form the power storage cavity, the spring between the first hydraulic cylinder 13 and the piston 15 is used for accumulating force in the force accumulating cavity to clamp the cable when the sliding frame 10 moves rightwards, the middle part of the lower side of the first hydraulic cylinder 13 is fixedly connected with a first hydraulic rod 16, the first hydraulic rod 16 consists of a cylinder, a piston and a cylinder, the upper end of the cylinder of the first hydraulic rod 16 is an inclined plane, the telescopic end of the first hydraulic rod 16 passes through the first hydraulic cylinder 13 and is in sliding connection with the first hydraulic cylinder, the telescopic end of the first hydraulic rod 16 is in limit fit with the push rod 14, the push rod 14 is limited when moving rightmost, the upper clamping piece 22 is kept to clamp the cable when the main clamping piece 11 moves leftwards and resets, the middle part of the lower side of the shell 1 is fixedly connected with a second hydraulic rod 17, the second hydraulic rod 17 consists of a cylinder, a piston and a square column, the spring is fixedly connected in the second hydraulic rod 17, the upper part of the piston of the first hydraulic rod 16 is communicated with the lower part of the piston of the second hydraulic rod 17 through a guide pipe, the second hydraulic rod 17 is triggered by extrusion of the sliding frame 10, the first hydraulic rod 16 is controlled to release the limit of the push rod 14, continuous operation is realized, hydraulic oil is stored in the first hydraulic rod 16, the second hydraulic rod 17 and the guide pipe between the first hydraulic rod and the second hydraulic rod, an elastic sheet 18 is fixedly connected to the left side of the telescopic end of the second hydraulic rod 17, a wedge block 19 is fixedly connected to the elastic sheet 18, the elastic sheet 18 is used for controlling the wedge block 19 to downwards extrude the wedge block 19 when the sliding frame 10 moves rightwards, the wedge block 19 is leftwards extruded and overturned when the sliding frame 10 moves leftwards, the sliding frame 10 is matched with the wedge block 19 in an extrusion mode, the wedge block 19 is downwards extruded to push the telescopic end of the second hydraulic rod 17 inwards contracted, a groove with the same size as the wedge block 19 is formed in the middle of the lower side of the shell 1 through hydraulic oil transmission, when the sliding frame 10 extrudes the wedge block 19 leftwards, the shell 1 is used for accommodating the wedge block 19, and the shell 1 is provided with a rear clamping assembly used for clamping a cable.

As shown in fig. 7 and 8, the rear clamping assembly comprises a lower clamping member 20, the lower clamping member 20 is slidably connected to the right part of the housing 1, the right part of the housing 1 is fixedly connected with a bracket 21, the bracket 21 is slidably connected with an upper clamping member 22, the upper clamping member 22 moves downwards to cooperate with the lower clamping member 20 to clamp the cable, a spring is fixedly connected between the bracket 21 and the upper clamping member 22, the elastic potential energy of the spring between the first hydraulic cylinder 13 and the piston 15 is greater than the elastic potential energy of the spring between the bracket 21 and the upper clamping member 22, that is, the force in the force storage cavity can drive the upper clamping member 22 to move downwards, the bracket 21 is fixedly connected with a third hydraulic rod 23, the third hydraulic rod 23 consists of a cylinder, a piston and a cylinder, the left side of the piston of the third hydraulic rod 23 is communicated with the force storage cavity of the first hydraulic cylinder 13 through a conduit, hydraulic oil is stored in the force storage cavity of the third hydraulic rod 23 and the first hydraulic cylinder 13 and the conduit between the third hydraulic rod and the third hydraulic rod, the hydraulic oil in the force storage cavity extrudes the telescopic end of the third hydraulic rod 23 to shrink inwards to drive the rear extrusion block 24 to move rightwards, the upper clamping piece 22 is extruded downwards to clamp the cable, the telescopic end of the third hydraulic rod 23 is fixedly connected with the rear extrusion block 24, the lower side of the rear extrusion block 24 is provided with an inclined plane, a plurality of round rollers which are distributed at equal intervals are arranged at the inclined plane and are used for preventing the inclined plane of the rear extrusion block 24 from being separated from the upper clamping piece 22 due to overlarge friction force, the rear extrusion block 24 is in extrusion fit with the upper clamping piece 22, the right side of the upper part of the bracket 21 is fixedly connected with a fourth hydraulic rod 25, the telescopic end of the fourth hydraulic rod 25 passes through the third hydraulic rod 23, the telescopic end of the fourth hydraulic rod 25 is an inclined plane, the telescopic end of the fourth hydraulic rod 25 is in limit fit with the telescopic end of the third hydraulic rod 23, when the main clamping piece 11 drives the cable to move to the rightmost side, the fourth hydraulic rod 25 releases the limit of the third hydraulic rod 23, so that the third hydraulic rod 23 drives the upper clamping piece 22 to move downwards to clamp the cable, the upper part of the left side of the bracket 21 is fixedly connected with a fifth hydraulic rod 26, the fifth hydraulic rod 26 consists of a cylinder, a piston and a cylinder, a spring is fixedly connected between the cylinder and the cylinder in the fifth hydraulic rod 26, the elastic potential energy of the spring between the first hydraulic rod 13 and the push rod 14 is greater than that of the spring in the fifth hydraulic rod 26, after the limit of the first hydraulic rod 16 to the push rod 14 is released, the push rod 14 is reset under the action of the spring between the push rod 14 and the first hydraulic rod 13, so that the volume of the pressure storage cavity is increased, hydraulic oil in the third hydraulic rod 23 is pumped out, the telescopic end of the third hydraulic rod 23 is driven to extend outwards, the telescopic end of the fourth hydraulic rod 25 is extruded and limited again, the left side of the piston of the fifth hydraulic rod 26 is communicated with the fourth hydraulic rod 25 through a guide tube, the fourth hydraulic rod 25, the fifth hydraulic rod 26 and the guide pipes between the two are respectively stored with hydraulic oil, the telescopic end of the fifth hydraulic rod 26 is in extrusion fit with the sliding frame 10, when the sliding frame 10 moves to the rightmost side, the sliding frame 10 extrudes the telescopic end of the fifth hydraulic rod 26, the telescopic end of the fourth hydraulic rod 25 is controlled to shrink inwards by the hydraulic oil in the fifth hydraulic rod 26, the limit of the telescopic end of the third hydraulic rod 23 by the fourth hydraulic rod 25 is relieved, the upper side of the right part of the shell 1 is slidingly connected with the limiting plate 27, the limiting plate 27 is in limit fit with the lower clamping piece 20, the cable is initially placed between the lower clamping piece 20 and the upper clamping piece 22, then the lower clamping piece 20 is limited by the limiting plate 27, the lower clamping piece 20 is prevented from moving downwards when the cable is clamped, the cable is alternately clamped by the main clamping piece 11 and the upper clamping piece 22, the main clamping piece 11 can continuously tighten the cable in the reciprocating movement process, continuous operation is realized, and the working efficiency is improved.

As shown in fig. 2 and 10, the tension adjusting mechanism comprises two friction plates 28 which are vertically and symmetrically distributed, the friction plates 28 are semi-cylindrical, the inner diameter of each friction plate 28 is equal to the inner diameter of a cable, the two friction plates 28 are respectively and slidably connected to the right part in the semi-cylinder of the adjacent main clamping piece 11, one side, close to the adjacent main clamping piece 11, of the right part of each friction plate 28 is fixedly connected with a second hydraulic cylinder 29, the second hydraulic cylinders 29 are positioned in long oblique blocks of the adjacent main clamping piece 11, round rods of the main clamping piece 11 slide in the adjacent second hydraulic cylinders 29, the outer diameters of the round rods of the main clamping piece 11 are equal to the inner diameter of the second hydraulic cylinders 29, the round rods are used for extruding hydraulic oil in the second hydraulic cylinders 29, the second hydraulic cylinders 29 are matched with the round rods of the adjacent main clamping pieces 11 to form a pressurizing cavity, the push rod 14 is provided with a through hole communicated with the power storage cavity of the first hydraulic cylinder 13, the pressurizing cavity of the second hydraulic cylinder 29 is communicated with the through hole of the push rod 14 through a conduit, hydraulic oil is stored in the pressurizing cavity of the second hydraulic cylinder 29, the through hole of the push rod 14 and the conduit between the pressurizing cavity and the through hole of the push rod, a spring is fixedly connected between the second hydraulic cylinder 29 and the adjacent main clamping piece 11, the friction plate 28 is pulled leftwards relative to the main clamping piece 11 through the tension and the gravity of a cable, the hydraulic oil in the second hydraulic cylinder 29 is extruded and conveyed into the power storage cavity through the conduit, the compression amount of adjacent springs of the piston 15 is increased, the force of the upper clamping piece 22 for extruding the cable is increased, and the purpose of controlling the cable clamping force according to the cable tension is achieved.

After the staff set up the cable on the pole, the staff removes this device through rope etc. on the pole, with mount 2 card on the cross arm on the pole, two bolts on mount 2 right side are screwed up afterwards, at this moment, there is the contained angle between casing 1 and the pole, utilize the bolt to fix the device together with the cross arm, then the staff draws screens post 901 left, and will go up the main clamping part 11 of extrusion piece 9 and upside upwards, and tensile extension spring between extrusion piece 8 and the extrusion piece 9 down, compress the spring between the main clamping part 11 of upside and the carriage 10 simultaneously, at this process staff places the cable between two upper and lower main clamping parts 11, then loosen the main clamping part 11 of extrusion piece 9 and upside, make the main clamping part 11 of upside reset under the effect of the extension spring between its and the extrusion piece 8 down, the staff resets screens post 901 under the effect of the spring between it and carriage 10, the staff will limit plate 27 forward, and will be pressed down clamp 20 and will be pressed down in the clamping part 20 down in this process and place the clamping part 20 down, the cable is placed in proper order to the process, the staff is accomplished to the clamping part 20 is 20 down.

After placing the cable, the operator starts the motor 3, the motor 3 drives the lead screw 4 to rotate, the lead screw 4 rotates to drive the reciprocating block 5 to move rightwards, the reciprocating block 5 drives the connecting shell 6, the telescopic block 7, the lower extrusion block 8 and the upper extrusion block 9 to move rightwards together, the lower extrusion block 8 and the upper extrusion block 9 gradually contact with the adjacent main clamping piece 11 and extrude the adjacent main clamping piece 11 towards the cable direction, the spring between the main clamping piece 11 and the sliding frame 10 is stretched, the upper main clamping piece 11 and the lower main clamping piece 11 gradually clamp the cable, then the lower extrusion block 8 and the upper extrusion block 9 push the sliding frame 10 and the main clamping piece 11 to move rightwards, the groove of the shell 1 presses the limiting column 12 backwards to extrude the spring between the limiting column 12 and the sliding frame 10, the limiting column 12 gradually loses contact with the groove of the shell 1 and releases the limiting of the sliding frame 10, then the two main clamping pieces 11 drive the cable to move rightwards, the cable slides on the right lower clamping piece 20 until the sliding frame 10 contacts with the upper clamping piece 22, the reciprocating block 5 stops moving rightwards, the cable is gradually clamped by the main clamping piece 11, and the cable is tightly clamped tightly by the adjacent cable, and the work is completed.

In the process that the reciprocating block 5 drives the main clamping piece 11 to clamp and move the cable to the right, the U-shaped frame of the lower extrusion block 8 is gradually contacted with the push rod 14 and pushes the push rod to the right, and compresses the spring between the push rod 14 and the first hydraulic cylinder 13, so that the pressure in the force storage cavity is increased, hydraulic oil in the force storage cavity presses the piston 15 to the right and compresses the spring between the piston 15 and the first hydraulic cylinder 13 until the sliding frame 10 is gradually contacted with the bracket 21, in the process, the push rod 14 is contacted with the telescopic end of the first hydraulic rod 16 and pushes the telescopic end downwards, so that the volume of the upper side of the piston in the first hydraulic rod 16 is increased, hydraulic oil in the second hydraulic rod 17 is extracted through a guide pipe, the spring in the second hydraulic rod 17 is compressed, until the push rod 14 moves to the right of the telescopic end of the first hydraulic rod 16, the first hydraulic rod 16 and the second hydraulic rod 17 are gradually reset under the action of the spring in the second hydraulic rod 17, the expansion end of the first hydraulic rod 16 extends upwards to limit the push rod 14, at this time, the spring between the compression piston 15 and the first hydraulic cylinder 13 is in a compressed state, before the sliding frame 10 contacts with the bracket 21, the sliding frame 10 contacts with the expansion end of the fifth hydraulic rod 26 and extrudes the expansion end of the fifth hydraulic rod 26 rightwards, the volume of the left side of the piston in the fifth hydraulic rod 26 is increased, hydraulic oil in the fourth hydraulic rod 25 is extracted through a conduit, the expansion end of the fourth hydraulic rod 25 moves backwards, the limit on the expansion end of the third hydraulic rod 23 is released, at this time, the spring between the compression piston 15 and the first hydraulic cylinder 13 is reset, the hydraulic oil in the force storage cavity is extruded, the hydraulic oil in the force storage cavity flows to the third hydraulic rod 23 through the conduit, the expansion end of the third hydraulic rod 23 moves rightwards, the rear extrusion block 24 is driven to move rightwards, the rear pressing block 24 presses the inclined surface of the upper clamping member 22 to move the upper clamping member 22 downward, clamping the cable between the lower clamping member 20 and the upper clamping member 22.

After the lower clamping piece 20 and the upper clamping piece 22 are matched to clamp the cable, the sliding frame 10 is gradually contacted with the bracket 21 at the moment, then the lead screw 4 drives the reciprocating block 5 to move leftwards, the reciprocating block 5 drives the lower pressing block 8 and the upper pressing block 9 to move, at the moment, the clamping force of the two main clamping pieces 11 on the cable is reduced, as the lower pressing block 8 and the upper pressing block 9 gradually move leftwards relative to the main clamping pieces 11, the main clamping pieces 11 gradually reset under the action of springs between the main clamping pieces and the sliding frame 10, the contact with the cable is lost, at the moment, the right part of the upper pressing block 9 is contacted with the sliding frame 10 and drives the sliding frame 10 to move leftwards, the sliding frame 10 drives the main clamping pieces 11 to move leftwards, in the process of moving the sliding frame 10 is contacted with the wedge block 19, the wedge block 19 is leftwards extruded, the wedge block 19 drives the elastic piece 18 to swing around the lower left side of the wedge block 19, and finally is positioned in the groove of the shell 1, the wedge block 19 is reset under the action of the elastic piece 18 until the wedge block 19 is reset under the action of the elastic piece 18 after the sliding frame 10 moves to the left side of the wedge block 19, and the limiting post 12 is contacted with the lower spring 10 and the sliding frame 10 is contacted with the groove of the sliding frame 10 again.

Then the screw rod 4 drives the reciprocating block 5 to move rightwards, the reciprocating block 5 drives the lower extrusion block 8, the upper extrusion block 9, the sliding frame 10, the main clamping piece 11 and the cable to move rightwards, when the limiting post 12 moves backwards to release the limit on the sliding frame 10, the right side of the sliding frame 10 is contacted with the wedge block 19, the sliding frame 10 extrudes the sliding frame downwards along the inclined plane of the wedge block 19, the wedge block 19 drives the telescopic end of the second hydraulic rod 17 to move downwards and compresses the spring in the second hydraulic rod 17, hydraulic oil in the second hydraulic rod 17 flows to the first hydraulic rod 16 through the guide pipe, the telescopic end of the first hydraulic rod 16 moves downwards, the limit on the push rod 14 is released, at the moment, the spring between the piston 15 and the first hydraulic cylinder 13 is reset, the piston 15 is driven to reset, meanwhile, the spring between the push rod 14 and the first hydraulic cylinder 13 is reset, the volume in the force storage cavity is increased, hydraulic oil in the third hydraulic rod 23 is extracted into the force storage cavity through the guide pipe, the rear extrusion block 24 moves leftwards to reset, the upper clamping piece 22 moves upwards under the action of the spring between the upper clamping piece and the support 21 to release the clamping of the cable, and then the clamping right movement is repeated.

When the main clamping piece 11 clamps a cable and moves rightwards, the friction plate 28 is prevented from moving rightwards due to the gravity and tension of the cable, so that the friction plate 28 slides leftwards relative to the main clamping piece 11, the friction plate 28 drives the adjacent second hydraulic cylinder 29 to move leftwards relative to the main clamping piece 11, the spring between the second hydraulic cylinder 29 and the main clamping piece 11 is compressed, the volume in the pressurizing cavity is reduced, hydraulic oil in the pressurizing cavity is conveyed into the force accumulating cavity through the through holes of the guide pipe and the push rod 14, the volume of the hydraulic oil in the force accumulating cavity is increased, the piston 15 is pressed rightwards and compresses the spring between the piston 15 and the first hydraulic cylinder 13, the compression amount of the spring between the piston 15 and the first hydraulic cylinder 13 is increased when the sliding frame 10 moves rightmost, the force of the rear pressing block 24 downwards presses the upper clamping piece 22 is further increased, the compression amount of the spring is changed according to the reaction force of the cable to the friction plate 28, and the clamping force to the cable is further changed.

Example 2

On the basis of the embodiment 1, as shown in fig. 3 and 4, the cable tension control device further comprises a stopping mechanism arranged on the connecting shell 6, the stopping mechanism is used for stopping the cable tension after the cable tension reaches a set value, the stopping mechanism comprises an unlocking block 30, the unlocking block 30 is slidably connected to the left part of the inner lower side of the connecting shell 6, a spring is fixedly connected between the unlocking block 30 and the connecting shell 6, the unlocking block 30 consists of a square block, a square plate, two cylinders, a cuboid and a clamping block, the square block is fixedly connected with the two cylinders through the square plate, the two cylinders are jointly fixedly connected with the cuboid, the front part and the rear part of the upper side of the cuboid are both provided with clamping blocks, the clamping blocks are used for limiting the adjacent positioning blocks 31, the connecting shell 6 is slidably connected with the two positioning blocks 31 which are in front-rear symmetrical distribution, the spring which is in the initial power storage state is fixedly connected between the two positioning blocks 31, grooves which are distributed at equal intervals are formed in the front side and the rear side in the shell 1, the grooves which are distributed at equal intervals are matched with adjacent positioning blocks 31, grooves are formed in the lower side surfaces of the positioning blocks 31, the grooves on the lower side surfaces of the two positioning blocks 31 are respectively in limit fit with clamping blocks on the front side and the rear side of a cuboid of the unlocking block 30, the clamping blocks of the unlocking block 30 are in contact with the grooves of the adjacent positioning blocks 31, the positioning blocks 31 are limited, an adjusting bolt 32 is rotationally connected to the right side of the connecting shell 6, an extruding sheet 33 is connected with the adjusting bolt 32 in a threaded manner, a tension spring is fixedly connected between the extruding sheet 33 and the lower extruding block 8, the tension of a cable is detected according to the deformation amount of the tension spring between the extruding sheet 33 and the lower extruding block 8, the tension force applied when the lower extruding block 8 moves by the same distance is changed by changing the distance between the extruding sheet 33 and the lower extruding block 8, the cable fixing device is used for fixing a cable by a worker, then moving the extrusion telescopic block 7 rightwards through the lower extrusion block 8 to reset the cable, the distance between the unlocking block 30 and the telescopic block 7 is smaller than the square width of the lower extrusion block 8, the positioning block 31 is enabled to extend outwards firstly, then the connecting shell 6 is stopped to move rightwards, the connecting shell 6 is prevented from suddenly stopping and not being fixed yet to cause slipping, the connecting shell 6 and the lower extrusion block 8 are enabled to be disconnected from the reciprocating block 5 after being misplaced by a certain distance through changing the tension of an initial tension spring, and the cable tensioning is enabled to reach a certain value and automatically stopped to work.

In the process that the main clamping piece 11 clamps the cable to move rightwards, when the cable tension is detected to reach a specified value, the cable is not continuously moved, the specific operation is as follows, after the fixing frame 2 and the cross arm are fixed, a worker calculates the cable tension when the sag value of the cable is in place according to the distance between adjacent electric poles, then the adjusting bolt 32 is rotated, the adjusting bolt 32 drives the extrusion piece 33 to move leftwards, so that when the lower extrusion piece 8 moves leftwards to the leftmost side of the connecting shell 6, the tension force of a tension spring between the extrusion piece 33 and the lower extrusion piece 8 is equal to the cable tension force, then the worker starts the motor 3 to drive the reciprocating piece 5 to move rightwards, after the main clamping piece 11 clamps the cable, the main clamping piece 11 drives the cable to move rightwards along with the gravity and the tension force of the cable to drive the main clamping piece 11 and the lower extrusion piece 8 to leftwards relative to the reciprocating piece 5, and stretches the tension spring between the extrusion piece 33 and the lower extrusion piece 8, as the cable is gradually tensioned, the tension of the cable becomes larger and larger, so that the distance that the lower extrusion block 8 moves leftwards relative to the connection shell 6 becomes larger and larger until the lower extrusion block 8 contacts with the unlocking block 30 and extrudes it downwards, the unlocking block 30 moves downwards and compresses the spring between the unlocking block 30 and the connection shell 6, the unlocking block 30 gradually loses contact with the positioning block 31 and releases the limit on the positioning block 31, then the positioning block 31 moves forwards and backwards under the action of the adjacent spring, contacts with the equidistant grooves of the shell 1 and limits the connection shell 6, then the connection shell 6 moves rightwards, the equidistant grooves of the shell 1 extrude the equidistant grooves along the inclined plane of the positioning block 31 into the connection shell 6, so that the positioning block 31 loses contact with the adjacent grooves on the right side and contacts with the adjacent grooves again, as the lower extrusion block 8 gradually moves leftwards relative to the connection shell 6, until the right side of the lower extrusion block 8 moves to the left side of the telescopic block 7, the telescopic block 7 moves upwards under the action of the spring between the telescopic block and the connecting shell 6 and gradually loses contact with the reciprocating block 5, the limit on the reciprocating block 5 is released, the reciprocating block 5 does not drive the connecting shell 6 to move any more, meanwhile, the motor 3 is closed by a worker, the cable is stopped being dragged at the moment, and then the cable on the right side is fixed on an electric pole by the worker.

After the cable is fixed on the pole by the staff, the staff pulls out the screens post 901 outwards and moves upwards the upper extrusion piece 9 for the main clamping piece 11 of upside resets under the effect of its spring with carriage 10, release the clamp to the cable, lower extrusion piece 8 and upper extrusion piece 9 remove rightwards under the effect of extension spring between lower extrusion piece 8 and the extrusion piece 33 this moment, in this process, lower extrusion piece 8 extrudees it downwards along the inclined plane of telescopic block 7, make telescopic block 7 contact with reciprocating block 5 again and spacing, simultaneously the effect of spring between its and the connection shell 6 of unlocking piece 30 upwards moves, then the staff starts motor 3 and drives connection shell 6 to move rightwards, make locating piece 31 inwards along the recess of casing 1, and compress the spring between two locating pieces 31, when locating piece 31 moves innermost, locating piece 31 extrudees unlocking piece 30 down, until unlocking piece 30 again spacing locating piece 31, at this moment, the staff stops motor 3.

Example 3

On the basis of embodiment 2, as shown in fig. 2 and 11-13, the device further comprises a swinging mechanism arranged on the shell 1, the swinging mechanism is used for enabling the shell 1 to swing along with the cable, the swinging mechanism comprises a lower support column 34, the lower support column 34 is rotationally connected to the upper portion of the left side of the shell 1, the left side of the shell 1 is slidably connected with a support frame 35 through a support, the support frame 35 is rotationally connected with an upper support column 36, the upper support column 36 and the lower support column 34 jointly support the cable, the rear side of the support frame 35 is fixedly connected with a detection block 37, the detection block 37 is slidably connected with the shell 1, a tension spring is fixedly connected between the detection block and the support frame, the support frame on the left side of the shell 1 is fixedly connected with a sixth hydraulic rod 38, the telescopic end of the sixth hydraulic rod 38 is fixedly connected with the detection block 37, the sixth hydraulic rod 38 is communicated with an adjusting guide tube 39, the right side of the shell 1 is rotationally connected with a winding shaft 40 (the joint of the winding shaft 40 and the shell 1 is set to be in a ratchet pawl structure), the winding shaft 40 is provided with a through hole communicated with the adjusting guide pipe 39, the front side of the winding shaft 40 is slidingly connected with a driven block 41, the driven block 41 consists of a small cylinder, a large cylinder and four arc-shaped inclined blocks distributed circumferentially, the small cylinder of the driven block 41 slides in the through hole of the winding shaft 40, the winding shaft 40 is fixedly connected with a traction rope 42, the traction rope 42 is fixedly connected with the fixing frame 2, the traction rope 42 is wound on the winding shaft 40 to increase the included angle between the shell 1 and the electric pole, the shell 1 is provided with a driving component for driving the winding shaft 40 to rotate, the position of a cable is detected through the upper support column 36, the shell 1 is controlled to swing upwards, the cable is always positioned between the upper support column 36 and the lower support column 34, the main clamping piece 11 is prevented from being scratched with the cable along the way when the main clamping piece 11 moves leftwards to reset, resulting in damage to the cable sheath.

As shown in fig. 2 and 12, the driving assembly includes a roller 43, the roller 43 is rotatably connected to the middle of the right side of the housing 1, the roller 43 contacts with the traction rope 42, and is used for guiding the traction rope 42 and simultaneously preventing the traction rope 42 from contacting with the housing 1, the lower portion of the right side of the housing 1 is rotatably connected with a driving column 44, the driving column 44 and an output shaft of the motor 3 are driven by a bevel gear set, the middle of the right side of the housing 1 is rotatably connected with a driven column 45, the driving column 44 and the driven column 45 are driven by pulleys and belts, a driving block 46 is fixedly connected to the rear side of the driven column 45, four inclined blocks distributed circumferentially are arranged on the rear side of the driving block 46, and the inclined blocks of the driven block 41 are contacted and press-fitted to drive the driven block 41 to rotate.

After the staff fixes the fixing frame 2 on the cross arm, the staff pushes the upper support column 36 upwards and stretches the tension spring between the detection block 37 and the shell 1, so that the distance between the upper support column 36 and the lower support column 34 is increased, then the cable is placed between the upper support column 36 and the lower support column 34, the staff releases the upper support column 36, the upper support column 36 moves downwards under the action of the tension spring between the detection block 37 and the shell 1 to reset, then the staff starts the motor 3 to tighten the cable, the motor 3 drives the driving column 44 to rotate through the bevel gear group, the driving column 44 drives the driven column 45 to rotate, the included angle between the cable and the electric pole gradually increases in the tightening process of the cable, so that the cable pushes the upper support column 36 upwards, drives the detection block 37 to move and stretches the tension spring between the detection block 37 and the shell 1, simultaneously pushing the telescopic end of the sixth hydraulic rod 38 to shrink inwards, hydraulic oil of the sixth hydraulic rod 38 flows to the winding shaft 40 through the adjusting guide pipe 39, hydraulic oil in the winding shaft 40 pushes the driven block 41 forwards, so that the inclined teeth of the driven block 41 are contacted with the inclined teeth of the driving block 46, the driving block 46 drives the driven block 41 and the winding shaft 40 to rotate, the traction rope 42 is wound on the winding shaft 40 (a ratchet pawl structure is arranged between the winding shaft 40 and the shell 1), the traction rope 42 pulls the shell 1 to swing upwards, so that an included angle between the shell 1 and an electric pole is increased until a cable does not press the upper supporting column 36 any more, at the moment, the upper supporting column 36 is reset, the sixth hydraulic rod 38 is driven to reset, the hydraulic oil in the winding shaft 40 is pulled out through the adjusting guide pipe 39, the driven block 41 is driven to move backwards and is contacted with the driving block 46, at the moment, the winding shaft 40 is not wound with the traction rope 42 any more, the included angle between the shell 1 and the fixed frame 2 is unchanged.

It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art and which are included in the embodiments of the present invention without the inventive step, are intended to be within the scope of the present invention. Structures, devices and methods of operation not specifically described and illustrated herein, unless otherwise indicated and limited, are implemented according to conventional means in the art.

Claims (10)

1. A cable tightening device for electric power construction, its characterized in that: the clamping device comprises a shell (1), wherein the shell (1) is hinged with a fixing frame (2), one side of the shell (1) close to the fixing frame (2) is provided with a motor (3), an output shaft of the motor (3) is fixedly connected with a screw rod (4) rotationally connected with the shell (1), one side of the screw rod (4) far away from the fixing frame (2) is connected with a reciprocating block (5) in sliding connection with the shell (1), the shell (1) is connected with a connecting shell (6) in sliding connection, the connecting shell (6) is connected with a telescopic block (7) in limit fit with the reciprocating block (5) in a sliding manner, a spring is fixedly connected between the connecting shell (6) and the telescopic block (7), the lower extrusion block (8) is connected with an upper extrusion block (9) in a sliding manner, a tension spring is fixedly connected between the lower extrusion block (8) and the upper extrusion block (9), a clamping column (901) is connected between the lower extrusion block (8) and the upper extrusion block (9) in a sliding manner, the shell (1) is connected with a telescopic block (7) in a sliding manner, the connecting spring (10) is fixedly connected between the upper extrusion block and the upper extrusion block (9) in a sliding manner, the lower extrusion block (8) and the upper extrusion block (9) are respectively in extrusion fit with the adjacent main clamping pieces (11), the sliding frame (10) is provided with a limiting mechanism, the shell (1) is provided with a continuous mechanism, and the shell (1) is provided with a tension adjusting mechanism.

2. A cable tightening device for electric power construction according to claim 1, characterized in that: the limiting mechanism comprises a limiting column (12), the limiting column (12) is slidably connected to the sliding frame (10), a spring is fixedly connected between the limiting column (12) and the sliding frame (10), and the shell (1) is provided with a groove in limiting fit with the limiting column (12).

3. A cable tightening device for electric power construction according to claim 1, characterized in that: the continuous mechanism comprises a first hydraulic cylinder (13), the first hydraulic cylinder (13) is fixedly connected with a push rod (14) in the shell (1), a spring is fixedly connected between the push rod (14) and the first hydraulic cylinder (13), the push rod (14) is in extrusion fit with a lower extrusion block (8), a piston (15) is slidingly connected to one side, far away from the lower extrusion block (8), of the first hydraulic cylinder (13), the first hydraulic cylinder (13) is matched with the piston (15) to form a force storage cavity, a spring is fixedly connected between the first hydraulic cylinder (13) and the piston (15), a first hydraulic rod (16) is fixedly connected between the first hydraulic cylinder (13), a telescopic end of the first hydraulic rod (16) is in limit fit with the push rod (14), a second hydraulic rod (17) is fixedly connected with the shell (1), a spring is fixedly connected in the second hydraulic rod (17), a first hydraulic rod (16) is fixedly connected with a second hydraulic rod (17) and is fixedly connected with one side, close to the second hydraulic rod (17), of the second hydraulic rod (17) is fixedly connected with a guide pipe (17), the elastic piece (18) is fixedly connected with a wedge block (19), the sliding frame (10) is in extrusion fit with the wedge block (19), a groove with the same size as the wedge block (19) is formed in one side, close to the second hydraulic rod (17), of the shell (1), and a rear clamping assembly for clamping a cable is arranged on the shell (1).

4. A cable tightening device for electric power construction according to claim 3, characterized in that: the rear clamping assembly comprises a lower clamping piece (20), the lower clamping piece (20) is slidably connected with the shell (1), the shell (1) is fixedly connected with a support (21), the support (21) is slidably connected with an upper clamping piece (22), a spring is fixedly connected between the support (21) and the upper clamping piece (22), a third hydraulic rod (23) is fixedly connected with the support (21), the third hydraulic rod (23) is communicated with a force storage cavity of the first hydraulic cylinder (13) through a guide pipe, hydraulic oil is stored in the third hydraulic rod (23), the force storage cavity of the first hydraulic cylinder (13) and the guide pipe between the third hydraulic rod and the first hydraulic cylinder, a rear extrusion block (24) is fixedly connected with the telescopic end of the third hydraulic rod (23), the rear extrusion block (24) is in extrusion fit with the upper clamping piece (22), a fourth hydraulic rod (25) is fixedly connected with the support (21), the telescopic end of the fourth hydraulic rod (25) is communicated with a force storage cavity of the third hydraulic rod (23), the telescopic end of the fourth hydraulic rod (25) is fixedly connected with the guide pipe (26) through a fifth hydraulic rod (26), the fifth hydraulic rod (26) is fixedly connected with the guide pipe between the fifth hydraulic rod (26) and the guide pipe, the telescopic end of the fifth hydraulic rod (26) is in extrusion fit with the sliding frame (10), the shell (1) is connected with a limiting plate (27) in a sliding mode, and the limiting plate (27) is in limiting fit with the lower clamping piece (20).

5. A cable tightening device for electric power construction according to claim 1, characterized in that: the tension adjusting mechanism comprises symmetrically distributed friction plates (28), the symmetrically distributed friction plates (28) are respectively and slidably connected with adjacent main clamping pieces (11), the friction plates (28) are fixedly connected with second hydraulic cylinders (29), the second hydraulic cylinders (29) are slidably connected with the adjacent main clamping pieces (11), and springs are fixedly connected between the second hydraulic cylinders (29) and the adjacent main clamping pieces (11).

6. The cable tightening device for electric power construction according to claim 5, wherein: the second hydraulic cylinder (29) is matched with the adjacent main clamping piece (11) to form a pressurizing cavity, the push rod (14) is provided with a through hole communicated with the power storage cavity of the first hydraulic cylinder (13), the pressurizing cavity of the second hydraulic cylinder (29) is communicated with the through hole of the push rod (14) through a guide pipe, and hydraulic oil is stored in the pressurizing cavity of the second hydraulic cylinder (29), the through hole of the push rod (14) and the guide pipe between the pressurizing cavity and the push rod.

7. The cable tightening device for electric power construction according to claim 4, wherein: the cable tension control device is characterized by further comprising a stopping mechanism arranged on the connecting shell (6), the stopping mechanism is used for stopping a tightening line after the cable tension reaches a set value, the stopping mechanism comprises an unlocking block (30), the unlocking block (30) is connected with the connecting shell (6) in a sliding mode, a spring is fixedly connected between the unlocking block (30) and the connecting shell (6), a symmetrically distributed positioning block (31) is connected with the connecting shell (6) in a sliding mode, the spring is fixedly connected between the symmetrically distributed positioning block (31), the shell (1) is provided with equidistant grooves matched with the positioning block (31), the unlocking block (30) is in limit fit with the positioning block (31), the connecting shell (6) is connected with an adjusting bolt (32) in a rotating mode, the adjusting bolt (32) is connected with an extruding piece (33) in a threaded mode, a tension spring is fixedly connected between the extruding piece (33) and the lower extruding piece (8), and the lower extruding piece (8) is in extrusion fit with the telescopic piece (7).

8. The cable tightening device for electric power construction according to claim 7, wherein: the distance between the unlocking block (30) and the telescopic block (7) is smaller than the width of the sliding part of the lower extrusion block (8) in the connecting shell (6).

9. The cable tightening device for electric power construction according to claim 7, wherein: still including set up in swing mechanism of casing (1), swing mechanism is used for making casing (1) follow cable swing, swing mechanism including lower support column (34), lower support column (34) rotate connect in casing (1), casing (1) sliding connection has support frame (35), support frame (35) rotate and are connected with support column (36), support frame (35) rigid coupling has detection piece (37), detection piece (37) with casing (1) sliding connection, detection piece (37) with rigid coupling has the extension spring between casing (1), casing (1) rigid coupling has sixth hydraulic stem (38), the flexible end of sixth hydraulic stem (38) with detection piece (37) rigid coupling, sixth hydraulic stem (38) intercommunication has regulation pipe (39), casing (1) rotate and are connected with winding axle (40), winding axle (40) sliding connection has driven piece (41), winding axle (40) rigid coupling has haulage rope (42), winding axle (42) with casing (40) rigid coupling has regulation pipe (37) rigid coupling, winding axle (40) drive assembly (40).

10. The cable tightening device for electric power construction according to claim 9, wherein: the driving assembly comprises a roller (43), the roller (43) is rotationally connected with the shell (1), the shell (1) is rotationally connected with a driving column (44), the roller (43) is in contact with the traction rope (42), the driving column (44) is in transmission with an output shaft of the motor (3) through a bevel gear set, the shell (1) is rotationally connected with a driven column (45), the driving column (44) is in transmission with the driven column (45) through a belt wheel and a belt, the driven column (45) is fixedly connected with a driving block (46), and the driving block (46) is in extrusion fit with the driven block (41).