CN115117788B

CN115117788B - Ratchet turn-buckle is used in electric wire installation

Info

Publication number: CN115117788B
Application number: CN202211037247.1A
Authority: CN
Inventors: 余延武
Original assignee: Jiangsu Hengan Electric Power Tool Co ltd
Current assignee: Jiangsu Hengan Electric Power Tool Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-04
Anticipated expiration: 2042-08-29
Also published as: CN115117788A

Abstract

The invention relates to the technical field of equipment for installing electric wires and discloses a ratchet wheel tightener for installing electric wires, which comprises a fixed frame, a connecting buckle and a tension meter, wherein a wind-up roll is movably sleeved in the fixed frame, a steel wire rope is wound on the wind-up roll and positioned in the fixed frame, and one end of the steel wire rope is fixedly connected with the wind-up roll. Through the setting of the spacing combination of ratchet, make when the tractive to the electric wire, because the ratchet latch interval is too big, can't guarantee after the electric wire reaches required pulling force again, the pawl can't carry out spacing when stopping to the ratchet, through second ratchet and pawl III, the cooperation of third ratchet and pawl gear, adjust the position at I place of pawl, but with this to the fixed disk the angle of rotation adjust, ensure that the wind-up roll satisfies the pulling force needs to the electric wire to wire rope's rolling, and then accurate completion is to the tractive of electric wire, improve the tensile accurate value of electric wire tractive, it is not enough to avoid the electric wire pulling force to appear when the installation.

Description

Ratchet turn-buckle is used in electric wire installation

Technical Field

The invention relates to the technical field of equipment for installing electric wires, in particular to a ratchet wheel wire tightener for installing electric wires.

Background

A wire tightener, also called ratchet tightener, is used for tightening electric wires in overhead line laying construction, when in use, a steel wire rope on the wire tightener is firstly loosened and fixed on a cross arm, the electric wires are clamped by a wire clamping clamp, then a special spanner is pulled, the steel wire rope is gradually wound on a ratchet wheel roller due to the anti-reversion effect of a pawl to tighten the wires, the tightened wires are fixed on an insulator, then the pawl is firstly loosened to loosen the steel wire rope or galvanized iron wires, then wire clamping pliers are loosened, and finally the steel wire rope or galvanized iron wires are wound on the roller of the ratchet wheel to complete the wire tightening effect, but the wire tightener used at present has some defects as follows:

the existing tensioner limits a roller through a ratchet wheel and a pawl to prevent reversion, but a certain gap exists between adjacent clamping teeth on the ratchet wheel, when a steel wire rope is wound by a roller wheel and an electric wire has certain tension, the tension does not reach the required tension at the moment, but the ratchet wheel is limited by the tension of the electric wire, the next clamping tooth cannot be in contact with the pawl and is limited and clamped by the pawl, so that the tension of the electric wire is small, and the effective tension cannot be reached.

Meanwhile, when the wire is drawn, the clamping position of the wire by the wire clamp cannot be accurately clamped, so that the drawing of the stay wire is not finished after the steel wire rope is wound, at the moment, the wire needs to be loosened and clamped again, and useless work is easily formed during drawing, so that the working efficiency is influenced.

Disclosure of Invention

The invention provides a ratchet wire tightener for wire installation, which has the advantages of high drawing precision and high working efficiency and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a ratchet turn-buckle is used in electric wire installation, includes mount, connector link and tensiometer, the wind-up roll has been cup jointed in the activity in the mount, the inside winding that just is located the mount on the wind-up roll has wire rope, wire rope's one end and wind-up roll fixed connection, wire rope's other end fixedly connected with shackle, the bilateral symmetry fixed mounting of mount has the backup pad, is located the mount right side movable mounting has movable locking device in the backup pad, is located the mount left fixed mounting has fixed locking device in the backup pad, the front end fixed mounting of wind-up roll has the spacing combination of ratchet, the spacing combination of ratchet and mount fixed connection, ratchet spanner has been cup jointed to the rear end of wind-up roll, connector link and fixed locking device's left part lock joint, the tensiometer is installed on wire rope.

Preferably, the spacing combination of ratchet includes the fixed disk, the fixed disk is cup jointed with the wind-up roll is fixed, the inboard fixed mounting of fixed disk has first ratchet, movable supporting disk I has been cup jointed to the inside activity that just is located the fixed disk on the wind-up roll, movable supporting disk II has been cup jointed through loose axle movable mounting in the top inner chamber of movable supporting disk I, the top and the first ratchet activity joint of pawl I, the inboard fixed mounting of movable supporting disk I has the second ratchet, movable supporting disk II has been cup jointed in the inside activity that just is located movable supporting disk I on the wind-up roll, the top inner chamber of movable supporting disk II has pawl III through axle movable mounting, the top and the second ratchet activity joint of pawl III, the equal fixed mounting in left side of pawl I and pawl III has supporting spring, the inboard fixed mounting of movable supporting disk II has the third ratchet, the inside activity that just is located movable supporting disk II on the wind-up roll has cup jointed the pawl gear, pawl gear and third ratchet activity joint, the preceding fixedly connected with movable sleeve of pawl gear, movable sleeve and wind-up roll activity cup joint, movable sleeve has the spacing sleeve, the side fixedly connected with the spacing outer end of spacing sleeve, the even fixed connection plate and the preceding fixed connection of mount.

Preferably, the number of teeth of the first ratchet wheel, the second ratchet wheel and the third ratchet wheel is increased in sequence, and the diameter of the teeth of the first ratchet wheel, the second ratchet wheel and the third ratchet wheel is decreased in sequence, so that the adjacent tooth spaces of the first ratchet wheel, the second ratchet wheel and the third ratchet wheel are decreased in sequence.

Preferably, the specification of activity locking device and fixed locking device is the same, activity locking device is including fixed case, fixed case and backup pad activity joint, there is spacing cutting ferrule at the top of fixed case through axisymmetric movable mounting, the locking cutting ferrule has been cup jointed in the inside activity of spacing cutting ferrule, the left side fixed mounting of fixed case has the go-between, suspension clasp and go-between lock joint, the locking cutting ferrule comprises two parts in front and back, the top of two parts is articulated around the locking cutting ferrule forms, the whole toper that is of locking cutting ferrule, the double-layered line hole has been seted up to the inside of locking cutting ferrule, the bell mouth has been seted up to the inside of spacing cutting ferrule, the locking cutting ferrule cup joints with the bell mouth activity.

Preferably, a sliding plate is movably clamped on the upper surface of the fixed box, a clamping plate is movably mounted on the upper surface of the sliding plate, locking bolts I are symmetrically sleeved on the clamping plate in a threaded manner, and the locking bolts I penetrate through the clamping plate and are in threaded connection with the sliding plate.

Preferably, the bottoms of the two limiting clamping sleeves are respectively and movably provided with a movable plate through a shaft, a locking bolt II is in threaded connection between the movable plates, and the left ends of the movable plates are movably connected with the fixed box through fixed shafts.

The invention has the following beneficial effects:

1. through the setting of the spacing combination of ratchet, make when the tractive of electric wire, because when the ratchet latch interval is too big, can't guarantee after the electric wire reaches required pulling force again, the pawl can't carry on spacing when stopping to the ratchet, through second ratchet and pawl III, the cooperation of third ratchet and pawl gear, adjust the position at I place of pawl, but adjust the angle of rotation of fixed disk with this, ensure that the wind-up roll satisfies the pulling force needs to the electric wire to wire rope's rolling, and then accurate completion is to the tractive of electric wire, improve the accurate value of electric wire tractive pulling force, it is not enough to avoid the electric wire pulling force to appear in the installation, lead to the electric wire in the use, break down.

2. Through activity locking device and fixed locking device's setting, make and carry out dual locking to the electric wire through activity locking device, improve the locking degree of electric wire, avoid droing at the tractive in-process, and simultaneously, after wire rope is whole by the rolling, because the position to the electric wire clamping appears the deviation, then the electric wire does not reach when required pulling force, still need carry out one step of tractive, then this moment, remove the clamping action of gliding board and clamp plate to the electric wire, fix the tail end and the fixed locking device of electric wire, make the locking cutting ferrule remove left earlier afterwards, break away from with spacing cutting ferrule, remove spacing to the electric wire, make activity locking device pull out wire rope afterwards, carry out the tractive once more after fixing the middle part to the electric wire, make the electric wire reach required pulling force value, avoid repetition to carry out the tractive to the electric wire, improve the installation effectiveness of electric wire.

Drawings

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

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is a partial cross-sectional view of the ratchet limiting assembly of the present invention;

FIG. 4 is a front view of a half-section view of the ratchet limiting assembly of the present invention;

FIG. 5 is a schematic view of the third ratchet and pawl gear installation configuration of the present invention;

FIG. 6 is a partial cross-sectional view of the structural movable locking device of the present invention;

FIG. 7 is a schematic view of the installation of the structure limiting card sleeve and the movable plate of the present invention;

fig. 8 is a schematic view of a structural locking ferrule of the present invention.

In the figure: 1. a fixed mount; 2. a wind-up roll; 3. a wire rope; 4. hanging buckles; 5. a support plate; 6. a movable locking device; 7. fixing the locking device; 8. a ratchet wheel limiting combination; 9. connecting buckles; 10. an electric wire; 11. fixing the disc; 12. a first ratchet wheel; 13. a movable support plate I; 14. a pawl I; 15. a second ratchet wheel; 16. a movable support plate II; 17. a pawl III; 18. a third ratchet wheel; 19. a pawl gear; 20. a movable sleeve; 21. a limiting sleeve; 22. a connecting plate; 23. a stationary box; 24. a limiting clamping sleeve; 25. locking the clamping sleeve; 26. a slide plate; 27. a clamping plate; 28. locking a bolt I; 29. a movable plate; 30. locking a bolt II; 31. a connecting ring; 32. a ratchet wrench.

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.

Example one

Referring to fig. 1-5, a ratchet tightener for electric wire installation comprises a fixed frame 1, a connecting buckle 9 and a tension meter, wherein a wind-up roll 2 is movably sleeved in the fixed frame 1, a steel wire rope 3 is wound on the wind-up roll 2 and positioned inside the fixed frame 1, one end of the steel wire rope 3 is fixedly connected with the wind-up roll 2, a suspension buckle 4 is fixedly connected with the other end of the steel wire rope 3, support plates 5 are symmetrically and fixedly arranged on two sides of the fixed frame 1, a movable locking device 6 is movably arranged on the support plate 5 positioned on the right side of the fixed frame 1, a fixed locking device 7 is fixedly arranged on the support plate 5 positioned on the left side of the fixed frame 1, a ratchet limiting combination 8 is fixedly arranged at the front end of the wind-up roll 2, the ratchet limiting combination 8 is fixedly connected with the fixed frame 1, a ratchet wrench 32 is fixedly sleeved at the rear end of the wind-up roll 2, the connecting buckle 9 is buckled with the left part of the fixed locking device 7, and the tension meter is installed on the steel wire rope 3; the ratchet wheel limiting combination 8 comprises a fixed disc 11, the fixed disc 11 is fixedly sleeved with a winding roller 2, a first ratchet wheel 12 is fixedly installed on the inner side of the fixed disc 11, a movable supporting disc I13 is movably sleeved on the winding roller 2 and located inside the fixed disc 11, a pawl I14 is movably installed in a top inner cavity of the movable supporting disc I13 through a movable shaft, the top of the pawl I14 is movably clamped with the first ratchet wheel 12, a second ratchet wheel 15 is fixedly installed on the inner side of the movable supporting disc I13, a movable supporting disc II 16 is movably sleeved on the winding roller 2 and located inside the movable supporting disc I13, a pawl III 17 is movably installed in a top inner cavity of the movable supporting disc II 16 through a shaft, the top end of the pawl III 17 is movably clamped with the second ratchet wheel 15, supporting springs are fixedly installed on the left sides of the pawl I14 and the pawl III 17, and a third ratchet wheel 18 is fixedly installed on the inner side of the movable supporting disc II 16, a pawl gear 19 is movably sleeved inside a movable supporting plate II 16 on the winding roller 2, the pawl gear 19 is movably clamped with a third ratchet wheel 18, a movable sleeve 20 is fixedly connected to the front of the pawl gear 19, the movable sleeve 20 is movably sleeved with the winding roller 2, a limiting sleeve 21 is movably sleeved on the movable sleeve 20, a connecting plate 22 is uniformly and fixedly connected to the side surface of the limiting sleeve 21, the outer end of the connecting plate 22 is fixedly connected with the front of the fixed frame 1, the tail end of the wire is fixed by a wire clamp, then the wire rope 3 is pulled out by the suspension buckle 4, the suspension buckle 4 is buckled with the wire clamp, then the winding roller 2 is rotated by a ratchet wrench 32 to wind the wire rope 3, when the wire rope 3 is wound to a certain extent and the wire is under a certain tension, the winding roller 2 cannot drive the next tooth on the first ratchet wheel 12 to cross the pawl I14 by the fixed disc 11, further, the required wire tension value is reached, at the moment, the movable supporting disc I13 is driven to rotate through the pawl I14, the movable supporting disc I13 is made to rotate by a certain angle, the limitation of the pawl III 17 on the second ratchet wheel 15 is removed, the pawl III 17 passes through the next latch on the second ratchet wheel 15, the position of the pawl I14 for limiting the first ratchet wheel 12 is adjusted, the pawl I14 and the first ratchet wheel 12 rotate synchronously, the wire is stopped after the position of the wire reaches the required tension value, if the position of the wire still has a certain distance after the next latch of the second ratchet wheel 15 passes through the pawl III 17, the positions of the pawl III 17 and the movable supporting disc I13 are adjusted synchronously, the pawl gear 19 is pulled out through the movable sleeve 20, the third ratchet wheel 18 rotates by the angle of one latch, then the pawl gear 19 and the third ratchet wheel 18 are limited, the rotatable angle of the fixed disc 11 is adjusted, the winding of the wire rope 3 by the winding roller 2 is ensured to meet the requirement of the wire tension value accurately, the wire drawing is improved, the wire drawing precision of the wire is avoided, the wire, the problem that the wire is easy to cause the phenomenon that the wire is blown to cause the insufficient in the situation that the tension value during the installation, and the tension is caused by the insufficient; the tooth numbers of the first ratchet wheel 12, the second ratchet wheel 15 and the third ratchet wheel 18 are sequentially increased, and the diameters of the first ratchet wheel 12, the second ratchet wheel 15 and the third ratchet wheel 18 are sequentially reduced, so that the adjacent tooth spaces of the first ratchet wheel 12, the second ratchet wheel 15 and the third ratchet wheel 18 are sequentially reduced, the limiting position of the pawl I14 on the first ratchet wheel 12 is gradually adjusted, the tension difference of the electric wire 10 is further reduced, and the installation requirement of the electric wire 10 is met;

example two

Referring to fig. 6-8, the movable locking device 6 and the fixed locking device 7 have the same specification, the movable locking device 6 includes a fixed box 23, the fixed box 23 is movably clamped with the support plate 5, a position-limiting cutting sleeve 24 is movably mounted on the top of the fixed box 23 through axial symmetry, a locking cutting sleeve 25 is movably sleeved inside the position-limiting cutting sleeve 24, a connecting ring 31 is fixedly mounted on the left side of the fixed box 23, the suspension buckle 4 is fastened with the connecting ring 31, the locking cutting sleeve 25 is composed of a front part and a rear part, the upper parts of the front part and the rear part of the locking cutting sleeve 25 are hinged, the locking cutting sleeve 25 is integrally conical, a wire clamping hole is formed inside the locking cutting sleeve 25, a conical hole is formed inside the position-limiting cutting sleeve 24, the locking cutting sleeve 25 is movably sleeved with the conical hole, the tail end of the electric wire 10 is inserted from a right end hole of the locking cutting sleeve 25, then the locking cutting sleeve 25 is inserted into the limiting cutting sleeve 24, the locking cutting sleeve 25 is limited by utilizing a conical hole of the limiting cutting sleeve 24, then the suspension buckle 4 is buckled with the connecting ring 31, then the movable locking device 6 is drawn by utilizing the steel wire rope 3, the movable locking device 6 draws the electric wire 10 through the limiting cutting sleeve 24 and the limiting cutting sleeve 25, in the drawing process, the electric wire 10 forms opposite pulling force on the limiting cutting sleeve 24, but under the limiting of the conical hole of the locking cutting sleeve 25, the limiting cutting sleeve 24 is clamped more and more tightly, and further the electric wire 10 is prevented from falling off from the limiting cutting sleeve 24; a sliding plate 26 is movably clamped on the upper surface of the fixed box 23, a clamping plate 27 is movably mounted on the upper surface of the sliding plate 26, locking bolts I28 are symmetrically sleeved on the clamping plate 27 in a threaded manner, the locking bolts I28 penetrate through the clamping plate 27 to be in threaded connection with the sliding plate 26, after the tail end of the electric wire 10 penetrates through the locking clamping sleeve 25, the tail end of the electric wire 10 is bent for 180 degrees and then penetrates through a position between the sliding plate 26 and the clamping plate 27, then the sliding plate 26 and the clamping plate 27 are locked by the locking bolts I28, the electric wire 10 is locked again, the electric wire 10 is locked doubly, when the electric wire 10 is pulled, the bent position of the electric wire 10 can also have the pressing effect on the locking clamping sleeve 25, the locking clamping sleeve 25 is pressed towards the limiting clamping sleeve 24, the locking degree of the limiting clamping sleeve 24 to the locking clamping sleeve 25 is enhanced, and the electric wire 10 is prevented from falling off in the drawing process, the working efficiency is influenced, even accidents are caused, meanwhile, after the steel wire rope 3 is completely rolled, due to the fact that the position for clamping the electric wire is deviated, when the electric wire does not reach the required tension, one-step traction is needed, at the moment, the clamping effect of the sliding plate 26 and the clamping plate 27 on the electric wire is relieved, the tail end of the electric wire 10 is fixed with the fixed locking device 7, the fixing method is the same as that when the electric wire 10 is fixed on the movable locking device 6, after the fixing is finished, the locking clamping sleeve 25 moves leftwards firstly and is separated from the limiting clamping sleeve 24, the limiting on the electric wire 10 is relieved, then the movable locking device 6 pulls out the steel wire rope 3, the middle part of the electric wire 10 is fixed and then is pulled again, the electric wire reaches the required tension value, the electric wire is prevented from being repeatedly pulled, and the installation efficiency of the electric wire is improved; the movable plates 29 are movably mounted at the bottoms of the two limiting clamping sleeves 24 through shafts, the locking bolts II 30 are connected between the two movable plates 29 in a threaded mode, the left ends of the movable plates 29 are movably connected with the fixed box 23 through fixing shafts, the distance between the bottom ends of the two limiting clamping sleeves 24 is adjusted through the movable plates 29 and the locking bolts II 30, the diameter of the conical holes in the limiting clamping sleeves 24 is adjusted, the clamping degree of the locking clamping sleeves 25 is improved, and the clamping degree of the electric wires 10 is increased.

The working principle is that a connecting buckle 9 is connected with a wire pile for installing a wire, the other end of the connecting buckle 9 is buckled with a connecting ring 31 on a fixed locking device 7, a wire rope 3 is pulled out through a movable locking device 6, the tail end of the wire 10 is inserted into a right end hole of a locking cutting sleeve 25, the locking cutting sleeve 25 is inserted into a limiting cutting sleeve 24, the locking cutting sleeve 25 is limited through a conical hole of the limiting cutting sleeve 24, the tail end of the wire 10 penetrates through the locking cutting sleeve 25, the tail end of the wire 10 is bent for 180 degrees and then penetrates between a sliding plate 26 and a clamping plate 27, the sliding plate 26 and the clamping plate 27 are locked through a locking bolt I28, then a winding roller 2 is rotated through a ratchet wrench 32 to wind the wire rope 3, when the wire rope 3 is wound to a certain degree, the wire is under certain tension, at the moment, the wind-up roll 2 can not drive the next latch on the first ratchet wheel 12 to cross the pawl I14 through the fixed disc 11, and further the required tension value of the electric wire is reached, then the movable supporting disc I13 is driven to rotate through the pawl I14, so that the movable supporting disc I13 rotates by a certain angle, the limitation of the pawl III 17 on the second ratchet wheel 15 is removed, and further the pawl III 17 crosses the next latch on the second ratchet wheel 15, and further the position of the pawl I14 on the first ratchet wheel 12 is adjusted, so that the pawl I14 and the first ratchet wheel 12 synchronously rotate, and the rotation is stopped after reaching the required tension position of the electric wire, if the next latch of the second ratchet wheel 15 crosses the pawl III 17, and then the required position of the electric wire still has a certain distance, and similarly, the positions of the pawl III 17 and the movable supporting disc I13 are synchronously adjusted, at the moment, the pawl gear 19 is pulled out through the movable sleeve 20, and the third ratchet wheel 18 is rotated by a latch angle, then, the pawl gear 19 and the third ratchet wheel 18 are limited, so that the rotatable angle of the fixed disc 11 is adjusted, and when the tension value of the electric wire is adjusted by the ratchet wheel limiting combination 8, the torsion force needs to be continuously applied to the winding roller 2 through the ratchet wheel wrench 32;

after the steel wire rope 3 is completely rolled, because the position for clamping the electric wire deviates, when the electric wire does not reach the required tension, one-step traction is required, at the moment, the clamping effect of the sliding plate 26 and the clamping plate 27 on the electric wire is relieved, the tail end of the electric wire 10 is fixed with the fixed locking device 7, the fixing method is the same as that of the electric wire 10 when the movable locking device 6 is fixed, after the fixing is finished, the locking clamping sleeve 25 moves leftwards firstly and is separated from the limiting clamping sleeve 24, the limitation on the electric wire 10 is relieved, then the movable locking device 6 is enabled to pull out the steel wire rope 3, the middle part of the electric wire 10 is fixed and then is subjected to traction again, and the electric wire is installed when the required tension value is reached.

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 ratchet turn-buckle is used in electric wire installation, includes mount (1), connector link (9) and tensiometer, its characterized in that: a wind-up roll (2) is movably sleeved in the fixing frame (1), a steel wire rope (3) is wound on the wind-up roll (2) and positioned inside the fixing frame (1), one end of the steel wire rope (3) is fixedly connected with the wind-up roll (2), the other end of the steel wire rope (3) is fixedly connected with a suspension buckle (4), support plates (5) are symmetrically and fixedly arranged on two sides of the fixing frame (1), a movable locking device (6) is movably arranged on the support plate (5) positioned on the right side of the fixing frame (1), a fixed locking device (7) is fixedly arranged on the support plate (5) positioned on the left side of the fixing frame (1), a ratchet limiting combination (8) is fixedly arranged at the front end of the wind-up roll (2), the ratchet limiting combination (8) is fixedly connected with the fixing frame (1), a ratchet wrench (32) is fixedly sleeved at the rear end of the wind-up roll (2), a connecting buckle (9) is fastened with the left part of the fixed locking device (7), and the tension meter is installed on the steel wire rope (3);

the spacing combination of ratchet (8) includes fixed disk (11), fixed disk (11) and wind-up roll (2) fixed socket joint, the inboard fixed mounting of fixed disk (11) has first ratchet (12), the inside activity that just is located fixed disk (11) on wind-up roll (2) has cup jointed movable supporting disk I (13), the top inner chamber of movable supporting disk I (13) has pawl I (14) through loose axle movable mounting, the top and the first ratchet (12) activity joint of pawl I (14), the inboard fixed mounting of movable supporting disk I (13) has second ratchet (15), the inside activity that just is located movable supporting disk I (13) on wind-up roll (2) has cup jointed movable supporting disk II (16), the top inner chamber of movable supporting disk II (16) has pawl III (17) through axle movable mounting, the top and the second ratchet (15) activity joint of pawl III (17), the equal fixed mounting in left side of pawl I (14) and pawl (17) has the support spring, the inboard fixed mounting of movable supporting disk II (16) has third ratchet cup jointed movable supporting disk III (18), movable supporting disk III (19) and movable supporting disk II (19) are located movable supporting disk II (19), the utility model discloses a winding roller, including ratchet gear (19), preceding fixedly connected with movable sleeve (20) of pawl gear (19), movable sleeve (20) cup joint with wind-up roll (2) activity, stop collar (21) have been cup jointed in the activity on movable sleeve (20), the even fixedly connected with connecting plate (22) in side of stop collar (21), the outer end of connecting plate (22) and the preceding fixed connection of mount (1), the number of teeth of first ratchet (12), second ratchet (15) and third ratchet (18) increase in proper order, and the diameter reduces in proper order, so first ratchet (12), second ratchet (15) and the adjacent tooth spacing of third ratchet (18) reduce in proper order.

2. The ratchet turnbuckle for electric wire installation according to claim 1, wherein: the movable locking device (6) is the same as the fixed locking device (7) in specification, the movable locking device (6) comprises a fixed box (23), the fixed box (23) is movably clamped with a supporting plate (5), a limiting clamping sleeve (24) is movably mounted at the top of the fixed box (23) through axial symmetry, a locking clamping sleeve (25) is movably sleeved in the limiting clamping sleeve (24), a connecting ring (31) is fixedly mounted on the left side of the fixed box (23), a suspension buckle (4) is buckled with the connecting ring (31), the locking clamping sleeve (25) consists of a front part and a rear part, the upper parts of the front part and the rear part of the locking clamping sleeve (25) are hinged to form, the whole locking clamping sleeve (25) is conical, a clamping hole is formed in the locking clamping sleeve (25), a conical hole is formed in the limiting clamping sleeve (24), and the locking clamping sleeve (25) is movably sleeved with the conical hole.

3. The ratchet turnbuckle for electric wire installation according to claim 2, wherein: the upper surface activity joint of fixed case (23) has slide board (26), the upper surface movable mounting of slide board (26) has clamping plate (27), symmetrical screw thread cover has locking bolt I (28) on clamping plate (27), locking bolt I (28) pass clamping plate (27) and slide board (26) threaded connection.

4. The ratchet turnbuckle for electric wire installation according to claim 3, wherein: the bottom of each of the two limiting clamping sleeves (24) is movably provided with a movable plate (29) through a shaft, a locking bolt II (30) is connected between the movable plates (29) in a threaded mode, and the left end of each movable plate (29) is movably connected with the fixed box (23) through a fixed shaft.