CN112722991A

CN112722991A - Cable conveying protection device for electric power construction

Info

Publication number: CN112722991A
Application number: CN202110136322.9A
Authority: CN
Inventors: 赵书英
Original assignee: Individual
Current assignee: Baiyin Power Supply Company State Grid Gansu Electric Power Co
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-04-30
Anticipated expiration: 2041-02-01
Also published as: CN112722991B

Abstract

The invention belongs to the technical field of cable transmission, and discloses a cable transmission protection device for electric power construction. According to the invention, when the cable is placed at the top of the rotating disc, the outlet direction of the cable is unchanged when the cable is stripped, so that the cable roll is always subjected to tangential tension towards the outlet of the placing disc, the tangential tension can make the cable roll have an axial rotation trend, the trend can make the cable roll and the upper surface of the rotating disc generate static friction force, the friction force finally causes the rotating disc to rotate, the stop lever can limit the position of the cable roll, and the cable roll is prevented from being pulled by the conveyor to generate displacement.

Description

Cable conveying protection device for electric power construction

Technical Field

The invention belongs to the technical field of cable transmission, and particularly relates to a cable transmission protection device for electric power construction.

Background

The existing cable conveying method generally adopts a cable conveyor for conveying, the cable conveyor is an electric machine for laying electric cables (or communication cables), and can be matched with a cable tractor, a lifter and other cable laying machines for use, so that the construction is convenient and rapid, manpower and material resources can be greatly saved, and the construction cost is effectively reduced.

Although the cable conveyor greatly facilitates construction and improves working efficiency, certain defects still exist in practical application, in construction, workers find that when conveying cables, the cables are generally placed on the ground in a coil shape, when the cable conveyor conveys the cables, one end of each cable, which is stripped, can be dragged to convey the cables outwards, and due to the fact that the cables are dragged by the conveyor and when the cables fall off from the cable coil, the cables are rewound by a tangential force, the tangential force can drive the cables to be dragged on the ground, particularly when the cables are about to be exhausted, the gravity of the cables is small, and the cables are easy to drag, and the cable skin is abraded.

When the cable is conveyed, the cable is generally straightened on the ground, which brings inconvenience to construction, the cable is easy to wind on the end between the cable and the conveyor or to be wound with other obstacles due to lack of traction, and when the conveying height of the cable has certain requirements, the existing conveyor cannot adjust the conveying height.

Disclosure of Invention

The invention aims to provide a cable transmission protection device for power construction, which solves the problems in the background technology.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a protection device is carried to cable that electric power construction used, includes the main tributary strut, the bottom fixed mounting of main tributary strut has the universal wheel, the bottom fixed mounting of main tributary strut front end has places the dish, the bottom fixed mounting who places the dish inner chamber has the fixing base, the inboard fixed mounting of fixing base has the axis of rotation, the top fixed mounting of axis of rotation has the rolling disc, vertical groove and jack have been seted up on the surface of rolling disc, it has the shelves pole to pass in the vertical groove, the middle part of jack has passed the mount, the top threaded connection of mount has the nut, shelves pole and the fixed cup jointing of mount.

Preferably, place two deflectors of opening part movable mounting of dish, the outer end of deflector also movable mounting has the deflector and installs four groups altogether, the deflector with place the equal movable mounting of the junction between dish open-ended junction and deflector and the deflector has sub-fastener and female fastener, threaded connection between sub-fastener and the female fastener, the inside wall of deflector is fixed mounting respectively has fixed roller and leading truck, the inboard fixed mounting of leading truck has a spring, the inner contact of a spring has the movable roller, the equal fixed mounting in upper and lower both ends of movable roller has the baffle, the activity cup joints between baffle and the leading truck.

Preferably, a bottom cross beam is fixedly installed in the middle of the bottom of the main support frame, an upright post is fixedly installed at the top of the middle of the bottom cross beam, an upper support frame is movably installed at the top of the main support frame, a rack is fixedly installed at the bottom of the middle of the upper support frame, the rack is movably sleeved with the upright post, a motor is fixedly installed at the outer side of the top of the upright post, a gear is connected to the output end of the motor in a transmission manner, the gear is meshed with the rack, a wheel frame and a conveyor are respectively fixedly installed at the inner side of the rear end of the upper support frame, a guide cylinder is fixedly installed at the inner side of the wheel frame, a spring and a guide pillar are movably sleeved inside the guide cylinder, two ends of the spring are respectively contacted with the guide pillar and the bottom of the inner cavity of the guide cylinder, and a cable is connected between the conveyor and the supporting wheel in a transmission manner, is released from the rotating disc and is guided and hung in the cable guide frame through the fixed roller and the movable roller.

Preferably, the inner ring of the rotating shaft is in transmission connection with the rotating disc, the outer ring of the rotating shaft is fixedly connected with the inner side of the fixing seat, the rotating disc has axial freedom degree through the rotating shaft, the rotating disc can rotate freely, when the cable is placed at the top of the rotating disc, the outlet direction of the cable is unchanged when the cable is stripped, so that the cable roll always receives tangential tension towards the outlet of the placing disc, the tangential tension can enable the cable roll to have an axial rotation trend, static friction force is generated between the cable roll and the upper surface of the rotating disc due to the trend, and the rotating disc is finally rotated due to the friction force.

Preferably, the stop rods are provided with four stop rods at the top of the rotating disc, the bottom end of each stop rod is correspondingly provided with a fixing frame, and the vertical grooves are provided with four vertical grooves at the two sides of each vertical groove and are provided with a row of jacks.

Preferably, both ends of the top of the fixing frame are provided with a stud, the distance between the studs at both ends of the fixing frame is equal to the distance between two jacks aligned at both sides of the vertical groove, the two studs on the fixing frame upwards penetrate through the two jacks and extend to the upper part of the rotating disc, two nuts are sleeved on the outer ends of the two studs extending to the upper part of the rotating disc in a threaded manner, the nuts realize the fixation of the fixing frame and the stop lever positions, the distance between each stop lever and the center of the rotating disc needs to be the same finally, the distance between each stop lever and the center of the rotating disc finally depends on the radius of a coil of conveying cable, the four stop levers are encircled inside the nuts by using a coil of cable, and the cable coil is ensured to be free from unknown change due to the stop levers when being gradually stripped from the cable.

Preferably, the fixed roller and the movable roller have the same shape and size, and the middle part of the fixed roller and the movable roller is provided with a circle of curved surface recess, the fixed roller and the movable roller are always aligned and are in contact with each other in the initial state, the curved surface recesses on the surfaces of the fixed roller and the movable roller are used for adapting the curved surface of the cable, and part of the surface of the cable can be clamped in the curved surface recess.

Preferably, the guide plates are arranged at the upper end and the lower end of the right side of the movable roller respectively, rectangular slotted holes matched with the guide plates are formed in the inner sides of the upper end and the lower end of the guide frame, the guide plates are sleeved in the slotted holes, the movable roller can move relative to the fixed roller, the guide plates can be matched with the movable roller to move left and right, the guide plates move back and forth in the rectangular slots of the guide frame to play a role in guiding and limiting, the movement direction of the movable roller is limited to be not capable of deviating from the left side and the right side, the displacement of the movable roller is mainly caused by different widths of cables clamped by the fixed roller and the movable roller, when the width of the clamped cable is larger, the movable roller moves to the right side, the guide frame contracts, and the elastic force provided by the guide frame can always maintain the clamping of the cables between the movable roller and the fixed roller.

Preferably, the cable guide frame is a cross rod fixedly arranged at the bottom of the middle part of the upper support frame, five equidistant rings are fixedly arranged at the bottom of the cross bar of the cable guide frame, the specifications of the rings are the same, the cable passes through the rings, as shown in the second figure, after the cable passes through the inner side of the guide plate, the cable raises to the right and upwards and passes through the circular ring arranged at the bottom of the cable guide frame, during this period, the bending degree of the cable is low, and the shape of the cable can be relatively free when the cable is hooked between the circular rings of the cable guide frame, and the specific flow is that the supporting wheels and the conveyor are matched to clamp the cable, and the transmission through the conveyer carries out the cable with the cable, and original a roll of cable is peeled off gradually, and the cable of peeling off passes and upwards pulls behind the opening of placing the dish and between each deflector and finally reaches conveyer and supporting wheel department through the ring of cable leading truck bottom.

The invention has the following beneficial effects:

1. according to the invention, when the cable is placed at the top of the rotating disc, the outlet direction of the cable is unchanged when the cable is stripped, so that the cable roll is always subjected to tangential tension towards the outlet of the placing disc, the tangential tension can make the cable roll have an axial rotation trend, the trend can make the cable roll and the upper surface of the rotating disc generate static friction force, the rotating disc is finally rotated due to the friction force, the stop lever can limit the position of the cable roll, the cable roll is prevented from being pulled by a conveyor and being displaced, the cable roll and the rotating disc do not generate sliding friction due to synchronous rotation, the abrasion of the cable skin is avoided, and the cable conveying quality is improved.

2. According to the invention, the two guide plates are bent upwards, the female fastener and the male fastener at the joint of each guide plate are screwed, the bent state is kept, the stripped cable is clamped between the fixed roller and the movable roller, the cable is pulled obliquely upwards, each ring penetrating through the bottom of the cable guide frame is pulled to the conveyor and the supporting wheel, the transmission of the cable is always restrained by the fixed roller, the movable roller and the cable guide frame between the cable coil and the conveyor, the single transmission of the cable is ensured, and the winding problem is avoided.

3. According to the invention, the motor is started, the gear is driven to rotate by the motor, the gear drives the rack to move upwards and jacks the upper support frame, so that the cable guide frame, the conveyor and other components are all jacked, when the cable is finally separated from the conveyor and the support wheels, the height of the cable from the ground is increased, the cable can be lifted and conveyed to a place with a certain height away from the ground, and the applicability of the cable conveying device in different environments is improved.

Drawings

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a schematic diagram of the cable transport of the present invention;

FIG. 3 is a schematic view of the upper support bracket being raised according to the present invention;

FIG. 4 is a schematic view of the assembly of the turn disc and guide plate of the present invention;

FIG. 5 is a schematic view of the internal structure of the tray according to the present invention;

FIG. 6 is a disassembled view of the fixing base and the rotating shaft of the present invention;

FIG. 7 is a schematic view of the separation of the turn plate and the stop lever according to the present invention;

FIG. 8 is a schematic view of the connection structure of the guide plate according to the present invention;

FIG. 9 is an elevation view of the fixed and movable rollers of the present invention;

FIG. 10 is a schematic view of the guide sleeve with its interior disassembled in accordance with the present invention;

FIG. 11 is an enlarged view of a portion A of the present invention.

In the figure: 1. a main supporting frame; 2. a universal wheel; 3. placing a tray; 4. a fixed seat; 5. a rotating shaft; 6. rotating the disc; 7. a vertical slot; 8. a jack; 9. a gear lever; 10. a fixed mount; 11. a nut; 12. a guide plate; 13. a sub-fastener; 14. a female fastener; 15. fixing the roller; 16. a movable roller; 17. a guide plate; 18. a guide frame; 19. a first spring; 20. a bottom cross member; 21. a column; 22. an upper support frame; 23. a rack; 24. a motor; 25. a gear; 26. a wheel carrier; 27. a guide cylinder; 28. a spring; 29. a guide post; 30. a support wheel; 31. a conveyor; 32. a cable guide; 33. a cable.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 11, in the embodiment of the invention, a cable transmission protection device used in electric power construction includes a main support frame 1, a universal wheel 2 is fixedly installed at the bottom of the main support frame 1, a placing disc 3 is fixedly installed at the bottom of the front end of the main support frame 1, a fixing seat 4 is fixedly installed at the bottom of an inner cavity of the placing disc 3, a rotating shaft 5 is fixedly installed at the inner side of the fixing seat 4, a rotating disc 6 is fixedly installed at the top of the rotating shaft 5, a vertical groove 7 and an insertion hole 8 are formed in the surface of the rotating disc 6, a stop rod 9 penetrates through the vertical groove 7, a fixing frame 10 penetrates through the middle of the insertion hole 8, a nut 11 is connected to the top of the fixing frame 10 through.

Wherein, place two deflector 12 of opening part movable mounting of dish 3, the outer end of deflector 12 also movable mounting has deflector 12 and installs four groups altogether, deflector 12 and place the equal movable mounting in the junction between dish 3 open-ended junction and deflector 12 and the deflector 12 have sub-fastener 13 and female fastener 14, threaded connection between sub-fastener 13 and the female fastener 14, the inside wall of deflector 12 is fixed mounting has fixed gyro wheel 15 and leading truck 18 respectively, the inboard fixed mounting of leading truck 18 has a spring 19, the inner contact of a spring 19 has movable gyro wheel 16, the equal fixed mounting in upper and lower both ends of movable gyro wheel 16 has baffle 17, the activity cup joints between baffle 17 and the leading truck 18.

Wherein, a bottom beam 20 is fixedly arranged in the middle of the bottom of the main support frame 1, an upright post 21 is fixedly arranged at the top of the middle of the bottom beam 20, an upper support frame 22 is movably arranged at the top of the main support frame 1, a rack 23 is fixedly arranged at the bottom of the middle of the upper support frame 22, the rack 23 is movably sleeved with the upright post 21, a motor 24 is fixedly arranged at the outer side of the top of the upright post 21, a gear 25 is connected with the output end of the motor 24 in a transmission manner, the gear 25 is meshed with the rack 23, a wheel carrier 26 and a conveyor 31 are respectively fixedly arranged at the inner side of the rear end of the upper support frame 22, a guide cylinder 27 is fixedly arranged at the inner side of the wheel carrier 26, a spring 28 and a guide post 29 are movably sleeved inside the guide cylinder 27, two ends of the spring 28 are respectively contacted with the guide post 29 and the bottom, the cable 33 is connected between the conveyor 31 and the supporting wheel 30 in a transmission way, and the cable 33 is released from the rotating disc 6 and is guided and hung in the cable guide frame 32 through the fixed roller 15 and the movable roller 16.

Wherein, the inner ring and the rolling disc 6 transmission of axis of rotation 5 are connected, the outer loop of axis of rotation 5 and the inboard fixed connection of fixing base 4, rolling disc 6 possesses the axial degree of freedom through axis of rotation 5, the free rotation that can carry out of rolling disc 6, when the cable is placed at the top of rolling disc 6, because its export direction is unchangeable when peeling off the cable, cause the cable to roll up and receive the tangential pulling force of placing 3 exits of dish all the time towards, this tangential pulling force can make the cable roll up and possess an axial pivoted trend, this trend can make the cable roll up and produce static friction force between the upper surface of rolling disc 6, this friction force finally leads to rolling disc 6 to rotate.

Wherein, shelves pole 9 is provided with four and every bottom of shelves pole 9 all corresponds and installs a mount 10 at the top of rolling disc 6 altogether, and vertical groove 7 has seted up four and the both sides of every vertical groove 7 altogether and has all seted up a row of jack 8 on rolling disc 6.

The two ends of the top of the fixing frame 10 are provided with a stud, the distance between the studs at the two ends of the fixing frame 10 is equal to the distance between two jacks 8 aligned at the two sides of the vertical groove 7, the two studs on the fixing frame 10 upwards penetrate through the two jacks 8 and extend to the upper side of the rotating disc 6, two nuts are sleeved on the outer ends of the two studs extending to the upper side of the rotating disc 6 in a threaded manner, the nuts realize the fixation of the positions of the fixing frame 10 and the stop rods 9, the distance between each stop rod 9 and the center of the rotating disc 6 finally needs to be the same, the distance between each stop rod 9 and the center of the rotating disc finally depends on the radius of one coil of conveying cable, the four stop rods 9 are encircled inside the nut by one coil of cable, and the cable coil is ensured to be separated from the cable coil step by step and cannot.

The fixed roller 15 and the movable roller 16 are the same in shape and size, a circle of curved surface recess is formed in the middle of the fixed roller 15 and the movable roller 16, the fixed roller 15 and the movable roller 16 are always aligned and are in contact with each other in an initial state, the curved surface recesses in the surfaces of the fixed roller 15 and the movable roller 16 are used for adapting to the arc surface of the cable, and part of the surface of the cable can be clamped in the curved surface recess.

Wherein, two guide plates 17 are respectively arranged at the upper end and the lower end of the right side of the movable roller 16, the inner sides of the upper end and the lower end of the guide frame 18 are respectively provided with a rectangular groove hole matched with the guide plates 17, the guide plates 17 are sleeved in the groove holes, the movable roller 16 can move relative to the fixed roller 15 when the movable roller 16 moves, the guide plates 17 can be matched with the movable roller 16 to move left and right, the guide plate 17 moves back and forth in the rectangular groove of the guide frame 18, plays a role in guiding and limiting, limits the moving direction of the movable roller 16 to be only the left side and the right side and can not deviate, and the displacement of the movable roller 16 is mainly caused by the difference of the widths of the cables clamped by the fixed roller 15 and the movable roller 16, when the width of the clamped cable is larger, the movable roller 16 moves towards the right side, the guide frame 18 contracts, but the elastic force provided by the guide frame 18 can always maintain the clamping of the cable between the movable roller 16 and the fixed roller 15.

Wherein, the cable guide frame 32 is a cross bar which is fixedly arranged at the bottom of the middle part of the upper support frame 22, five equidistant rings are fixedly arranged at the bottom of the cross bar of the cable guide frame 32, the specifications of the rings are the same, the cable 33 passes through the rings, after the cable 33 passes through the inner side of the guide plate 12, as shown in fig. two, it is raised to the upper right and passes through a circular ring provided at the bottom of the cable guide frame 32, during this period, the cable is bent to a low degree and is relatively freely hooked between the rings of the cable guide 32, in a manner that the support wheels 30 and the conveyor 31 cooperate to clamp the cable, the cable is conveyed through the transmission of the conveyor 31, the original coil of cable is gradually stripped, and the stripped cable passes through the opening of the placing disc 3 and the space between the guide plates 12 and is pulled upwards through the circular ring at the bottom of the cable guide frame 32 to finally reach the conveyor 31 and the supporting wheel 30.

The working principle and the using process are as follows:

the cables are all placed at the top of the rotating disc 6, when the cables are placed, the cables are coiled with the four blocking rods 9 inside, the limiting of the four blocking rods 9 on the cables is guaranteed, one end of each cable penetrates through the guide plates 12, then the two guide plates 12 are bent upwards, the female fastening piece 14 and the male fastening piece 13 at the connecting part of each guide plate 12 are screwed, the bending state is kept, the stripped cables are continuously pulled upwards and upwards, each circular ring penetrating through the bottom of the cable guide frame 32 is pulled to the conveyor 31 and the supporting wheel 30, the extrusion transmission relation between the supporting wheel 30 and the conveyor 31 is kept, the conveyor 31 is started to cooperate with the supporting wheel 30 to transmit the cables, then the cables can be fully automatically transmitted, when the cables above the rotating disc 6 are stripped, the turning disc 6 will turn to keep the glass position of the cable roll always in the same place in relation to the laying disc 3.

When the conveying height of the cable needs to be raised, the motor 24 is started, the motor 24 drives the gear 25 to rotate, the gear 25 drives the rack 23 to move upwards and jack the upper support frame 22, therefore, the cable guide frame 32, the conveyor 31 and other parts are all jacked, and when the cable finally breaks away from the conveyor 31 and the support wheel 30, the height of the cable from the ground is raised.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a cable that electric power construction used carries protection device, includes main support frame (1), its characterized in that: the utility model discloses a quick-witted support for the automobile seat, including main tributary strut (1), the bottom fixed mounting of main tributary strut (1) front end has universal wheel (2), the bottom fixed mounting of placing set (3) inner chamber has fixing base (4), the inboard fixed mounting of fixing base (4) has axis of rotation (5), the top fixed mounting of axis of rotation (5) has rolling disc (6), vertical groove (7) and jack (8) have been seted up on the surface of rolling disc (6), it has shelves pole (9) to pass in vertical groove (7), the middle part of jack (8) is passed there is mount (10), the top threaded connection of mount (10) has nut (11), shelves pole (9) and mount (10) are fixed to be cup jointed.

2. The cable transportation protection device for electric power construction as claimed in claim 1, wherein: two guide plates (12) are movably arranged at the opening of the placing disc (3), the outer ends of the guide plates (12) are also movably provided with the guide plates (12) and are totally provided with four groups, a sub-fastening piece (13) and a female fastening piece (14) are movably arranged at the joint of the opening of the guide plate (12) and the placing disc (3) and the joint between the guide plate (12) and the guide plate (12), the male fastening piece (13) is in threaded connection with the female fastening piece (14), the inner side wall of the guide (12) plate is fixedly provided with a fixed roller (15) and a guide frame (18) respectively, a first spring (19) is fixedly arranged on the inner side of the guide frame (18), the inner end of the first spring (19) is contacted with a movable roller (16), the upper end and the lower end of the movable roller (16) are fixedly provided with guide plates (17), and the guide plates (17) are movably sleeved with the guide frame (18).

3. The cable transportation protection device for electric power construction as claimed in claim 1, wherein: the middle part of the bottom of the main support frame (1) is fixedly provided with a bottom cross beam (20), the top part of the middle part of the bottom cross beam (20) is fixedly provided with an upright post (21), the top part of the support frame (1) is movably provided with an upper support frame (22), the bottom part of the middle part of the upper support frame (22) is fixedly provided with a rack (23), the rack (23) is movably sleeved with the upright post (21), the outer side of the top part of the upright post (21) is fixedly provided with a motor (24), the output end of the motor (24) is connected with a gear (25) in a transmission way, the gear (25) is meshed with the rack (23) and is connected with the rack, the inner side of the rear end of the upper support frame (22) is respectively and fixedly provided with a wheel frame (26) and a conveyor (31), the inner side of the wheel frame (26) is fixedly provided with, the two ends of the spring (28) are respectively contacted with the guide post (29) and the bottom of the inner cavity of the guide barrel (27), the outer end of the guide post (29) is fixedly connected with a supporting wheel (30), the bottom of the middle part of the upper supporting frame (22) is fixedly provided with a cable guide frame (32), a cable (33) is connected between the conveyor (31) and the supporting wheel (30) in a transmission manner, and the cable (33) is released from the rotating disc (6) and is guided and hung in the cable guide frame (32) through the fixed roller (15) and the movable roller (16).

4. The cable transportation protection device for electric power construction as claimed in claim 1, wherein: the inner ring of the rotating shaft (5) is in transmission connection with the rotating disc (6), the outer ring of the rotating shaft (5) is fixedly connected with the inner side of the fixed seat (4), and the rotating disc (6) has axial freedom degree through the rotating shaft (5).

5. The cable transportation protection device for electric power construction as claimed in claim 1, wherein: the gear rods (9) are provided with four and the bottom end of each gear rod (9) at the top of the rotating disc (6) and are provided with a fixing frame (10) correspondingly, and the two sides of the vertical groove (7) which are provided with four and each vertical groove (7) on the rotating disc (6) are provided with a row of jacks (8).

6. The cable transportation protection device for electric power construction as claimed in claim 1, wherein: the two ends of the top of the fixing frame (10) are provided with studs, the distance between the studs at the two ends of the fixing frame (10) is equal to the distance between two jacks (8) aligned on the two sides of the vertical groove (7), and the two studs on the fixing frame (10) upwards penetrate through the two jacks (8) and extend to the upper side of the rotating disc (6).

7. The cable transportation protection device for electric power construction as claimed in claim 2, wherein: the fixed roller (15) and the movable roller (16) are same in shape and size, a circle of curved surface recess is formed in the middle of each fixed roller and each movable roller, the fixed rollers (15) and the movable rollers (16) are always aligned, and the fixed rollers and the movable rollers are in contact in an initial state.

8. The cable transportation protection device for electric power construction as claimed in claim 2, wherein: the guide plates (17) are provided with two blocks which are respectively arranged at the upper end and the lower end of the right side of the movable roller (16), rectangular slotted holes matched with the guide plates (17) are formed in the inner sides of the upper end and the lower end of the guide frame (18), and the guide plates (17) are sleeved in the slotted holes.

9. The cable transportation protection device for electric power construction as claimed in claim 3, wherein: the cable guide frame (32) is a cross rod fixedly mounted at the bottom of the middle part of the upper support frame (22), five equidistant rings are fixedly mounted at the bottom of the cross rod of the cable guide frame (32), specifications of the rings are the same, and the cable (33) penetrates through the rings.