CN112340539A

CN112340539A - Cable winding and withdrawing device

Info

Publication number: CN112340539A
Application number: CN202011272886.7A
Authority: CN
Inventors: 王俊粤
Original assignee: Ningbo Bianxue Electronic Technology Co ltd
Current assignee: Ningbo Bianxue Electronic Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-02-09

Abstract

The invention discloses a cable winding and retracting device, which comprises a first box body, wherein a cavity with an opening at the upper side and a right side is arranged in the first box body, the inner wall of the lower side of the cavity is rotatably connected with a main shaft with a spline groove arranged therein, and the device is suitable for winding wheels with different inner diameters and can well wind cables.

Description

Cable winding and withdrawing device

Technical Field

The invention relates to the field of cable recovery, in particular to a cable winding and recovering device.

Background

People can meet the phenomenon that long cables cannot be collected well in the process of withdrawing the cables, if the effect of withdrawing and winding the cables is poor in the process of withdrawing the cables in the previous period, the cables are easily wound together when the cables are used next time, the cables are difficult to untie when the cables are not used, and the working efficiency is influenced.

Disclosure of Invention

The technical problem is as follows:

whether can effectively twine the cable tightly and prevent that the effect that the antiport direct influence was withdrawed, current cable is withdrawed the device and does not have the function of effectively twining tightly and preventing antiport with the cable.

In order to solve the problems, the cable winding and retracting device is designed in the embodiment, and comprises a first box body, wherein a cavity with an upper side and a right side opening is arranged in the first box body, a main shaft with a spline groove therein is rotatably connected to the inner wall of the lower side of the cavity, a first fixed block fixed on the inner wall of the rear side of the cavity is rotatably connected to the upper side of the main shaft, a connecting box is slidably connected to the main shaft, a connecting cavity which is through from left to right is arranged in the connecting box, a fixed plate which extends leftwards is fixed on the left side of the connecting box, a connecting rod with an upper side fixed on the first fixed block and a sawtooth on the left side is connected to the upper side of the fixed plate in a sliding manner, an auxiliary fixed block fixed on the front side of the fixed plate is arranged on the left side of the connecting rod, the auxiliary fixed block is slidably connected to, a spring surrounding the joint rod is arranged between the sliding block and the auxiliary fixed block, one side of the joint rod, which is far away from the auxiliary fixed block, is rotatably connected with two symmetrical abutting rods with the right sides abutted to the left sides of the connecting rods, a compression spring is arranged between the vertical section of the abutting rods and the abutting rods, the joint rod is fixedly provided with an extension rod which is positioned at the lower side of the sliding block and extends leftwards, the left side of the extension rod is provided with a concave plate which is slidably connected to the front side of the sliding block and is symmetrical leftwards and rightwards, the lower side of the concave plate is rotatably connected with a rotating wheel, the upper side of the concave plate is provided with a connecting plate fixed at the front side of the fixed plate, two symmetrical compression springs are arranged between the connecting plate and the concave plate, the inner wall of the concave plate, the lower side of the sliding plate is rotatably connected with an auxiliary rotating wheel located on the upper side of the rotating wheel, the right side of the sliding plate is provided with a first sliding groove which is abutted against the left side of the extension rod and extends upwards, the right side of the first sliding groove is provided with a sliding connection auxiliary sliding groove which is connected to the right side of the concave plate and extends downwards, a straightening device used for straightening a cable is arranged in the connecting cavity, and a withdrawing device used for withdrawing the cable is arranged on the left side of the fixed plate.

Preferably, the device of flare-outing include sliding connection in the slider of connecting chamber upside inner wall, the slider downside is rotated and is connected with downwardly extending's bull stick, the bull stick is rotated and is connected with and is located the leading wheel of slider downside, the leading wheel downside be equipped with rotate connect in bull stick and rotate connect in the pinch roller of connecting chamber front and back inner wall, slider right side fixedly connected with upside horizontal segment sliding connection in the spill pole of connecting box upside and longitudinal symmetry, the vertical section of spill pole with be equipped with fixing spring between the connecting box right side, spill pole upside horizontal segment sliding connection has and is fixed in the butt piece of connecting box upside, butt piece meshing connection have rotate connect in the rotating wheel of connecting box upside, the rotating wheel internal fixation have splined connection in the spline sleeve of main shaft.

Preferably, the retracting device comprises a fixed box fixed on the inner wall of the lower side of the cavity and positioned on the left side of the fixed plate, a fixed cavity with an upper side and a right side opening is arranged in the fixed box, an auxiliary shaft extending upwards is rotatably connected to the inner wall of the lower side of the fixed cavity, the auxiliary shaft is connected with the main shaft through a belt, a gear fixed on the main shaft is arranged on the lower side of the belt, an auxiliary gear is meshed and connected with the left side of the gear in a meshing manner, a motor fixed on the inner wall of the lower side of the cavity is rotatably connected to the lower side of the auxiliary gear, a rotating block extending leftwards and rightwards on the upper side of the belt is fixed on the auxiliary shaft, a connecting rod extending to one side far away from the auxiliary shaft is rotated on the rear side of the rotating block, a supporting spring is arranged between the connecting rod and, the upper side of the fixed box is provided with an annular groove which is symmetrical about the center of the auxiliary shaft, the inner wall of the annular groove is connected with four idler wheels which are distributed in a centrosymmetric manner in a sliding manner, the idler wheels are connected with symmetrical supporting blocks in a rotating manner, cross plates which are symmetrical in the center are fixed on the upper sides of the four supporting blocks, four sliding grooves which are symmetrical in the center are arranged on the upper sides of the cross plates, winding wheels which are symmetrical left and right about the auxiliary shaft are abutted against the upper sides of the cross plates, through grooves which are communicated up and down are arranged in the winding wheels, auxiliary spline sleeves which are connected with the auxiliary shaft in a spline manner are arranged in the through grooves, sliding sleeves which are symmetrical left and right are arranged on the outer sides of the auxiliary spline sleeves, two groups of symmetrical rotating parts are arranged on the left and right sides of the sliding sleeves, one group of the, the countershaft upside rotates and is connected with the screw thread axle, screw thread axle upside fixedly connected with is fixed in the fixed horizontal pole of cavity rear side inner wall, screw thread axle outside threaded connection rotate connect in the threaded sleeve of sliding sleeve upside, cavity rear side inner wall is equipped with and is located the shifting chute of threaded sleeve rear side, shifting chute inner wall sliding connection has the movable plate, the movable plate downside is fixed with fixed motor, the fixed motor downside rotates and is connected with the drive wheel, the fixed motor right side is equipped with vertical section and is fixed in the L shape pole of movable plate downside, the meshing of L shape pole horizontal segment downside is connected with links up the wheel, it is connected with in to link up the rotation of wheel rear side is fixed in the main motor of first fixed block upside.

The invention has the beneficial effects that: the invention relates to a device for winding, packing and collecting cables, which is suitable for winding wheels with different inner diameters and can enable the cables to be wound well.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view of a in fig. 1.

Fig. 3 is a schematic diagram of the structure B-B in fig. 2.

Fig. 4 is a schematic view of the structure of C-C in fig. 1.

Fig. 5 is a schematic diagram of the structure of D-D in fig. 1.

FIG. 6 is a schematic diagram of the structure of E-E in FIG. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a cable winding and retracting device, which comprises a first box body 11, wherein a cavity 12 with an opening at the upper side and the right side is arranged in the first box body 11, a main shaft 25 with a spline groove arranged therein is rotatably connected to the inner wall at the lower side of the cavity 12, a first fixed block 37 fixed to the inner wall at the rear side of the cavity 12 is rotatably connected to the upper side of the main shaft 25, the main shaft 25 is slidably connected with a connecting box 26, a connecting cavity 27 penetrating from left to right is arranged in the connecting box 26, a fixed plate 56 extending leftwards is fixed at the left side of the connecting box 26, the fixed plate 56 is slidably connected with a connecting rod 36 with sawteeth at the upper side and fixed to the first fixed block 37 at the left side, an auxiliary fixed block 54 fixed to the front side of the fixed plate 56 is arranged at the left side of the connecting rod 36, engaging rods 66 which are vertically symmetrical are slidably connected to the front side of, a spring 55 surrounding the connecting rod 66 is arranged between the sliding block 57 and the auxiliary fixed block 54, one side of the connecting rod 66, which is far away from the auxiliary fixed block 54, is rotatably connected with two abutting rods 67 which are vertically symmetrical and abut against the left side of the connecting rod 36 at the right side, a compression spring 53 is arranged between the vertical section of the abutting rods 67 and the abutting rod 66, the engaging rod 66 is fixedly provided with an extending rod 58 which is positioned at the lower side of the sliding block 57 and extends leftwards, the left side of the extending rod 58 is provided with a concave plate 62 which is slidably connected with the front side of the sliding block 57 and is horizontally symmetrical, the lower side of the concave plate 62 is rotatably connected with a rotating wheel 59, the upper side of the concave plate 62 is provided with a connecting plate 65 fixed at the front side of the fixed plate 56, two compression springs 63 which are symmetrical are arranged between the connecting plate 65 and the concave, an extension spring 64 is arranged between the sliding plate 61 and the connecting plate 65, an auxiliary rotating wheel 60 positioned on the upper side of the rotating wheel 59 is rotatably connected to the lower side of the sliding plate 61, a first sliding groove 68 abutting against the left side of the extension rod 58 and extending upwards is arranged on the right side of the sliding plate 61, an auxiliary sliding groove 69 slidably connected to the right side of the concave plate 62 and extending downwards is arranged on the right side of the first sliding groove 68, a straightening device 901 for straightening cables is arranged in the connecting cavity 27, and a retracting device 902 for retracting cables is arranged on the left side of the fixing plate 56.

Advantageously, the straightening device 901 comprises a sliding block 30 slidably connected to the upper inner wall of the connecting cavity 27, a downwardly extending rotating rod 28 is rotatably connected to the lower side of the sliding block 30, a guide wheel 29 located on the lower side of the sliding block 30 is rotatably connected to the rotating rod 28, a pressing wheel 73 rotatably connected to the rotating rod 28 and rotatably connected to the front and rear inner walls of the connecting cavity 27 is provided on the lower side of the guide wheel 29, a horizontal upper section of the sliding block 30 is slidably connected to a vertically symmetrical concave rod 32 on the upper side of the connecting box 26, a fixed spring 31 is provided between the vertical section of the concave rod 32 and the right side of the connecting box 26, an abutment block 33 fixed to the upper side of the connecting box 26 is slidably connected to the horizontal upper section of the concave rod 32, the abutment block 33 is engaged with a rotating wheel 34 rotatably connected to the upper side of the connecting box 26, and a spline sleeve 35 connected to the main shaft 25 is fixed in the rotating, the rotation of the main shaft 25 causes the spline sleeve 35 to drive the rotating wheel 34 to rotate clockwise when viewed from above, causes the upper horizontal section of the concave rod 32 to move rightwards along the abutting block 33, causes the fixed spring 31 to be stretched, and simultaneously causes the lower horizontal section of the concave rod 32 to cause the sliding block 30 to move rightwards along the upper inner wall of the connecting cavity 27, causes the rotating rod 28 to rotate clockwise, drives the guide wheel 29 to move, causes the cable between the guide wheel 29 and the pressing wheel 73 to be clamped, and is not easy to be scattered in the process of being retracted.

Beneficially, the retraction device 902 includes a fixed box 17 fixed on the lower inner wall of the cavity 12 and located on the left side of the fixed plate 56, a fixed cavity 19 with an upper side and a right side opening is arranged in the fixed box 17, an auxiliary shaft 45 extending upwards is connected to the lower inner wall of the fixed cavity 19 in a rotating manner, the auxiliary shaft 45 is connected with the main shaft 25 through a belt 21, a gear 24 fixed on the main shaft 25 is arranged on the lower side of the belt 21, an auxiliary gear 22 is meshed and connected to the left side of the gear 24, a motor 23 fixed on the lower inner wall of the lower side of the cavity 12 is connected to the lower side of the auxiliary gear 22 in a rotating manner, a rotating block 20 extending on the upper side of the belt 21 in a left-right manner is fixed to the auxiliary shaft 45 and fixed to the lower side of the rotating block 20, a support spring 71 is arranged between the connecting rod 70 and the rotating block 20, and the connecting rod 70 is abutted to Twenty unidirectional teeth 18 distributed in an array, an annular groove 74 which is centrosymmetric with respect to the auxiliary shaft 45 is arranged on the upper side of the fixed box 17, four rollers 75 which are centrosymmetric are connected on the inner wall of the annular groove 74 in a sliding manner, the rollers 75 are rotationally connected with symmetric supporting blocks 16, a cross plate 15 which is centrosymmetric is fixed on the upper side of the four supporting blocks 16, four sliding grooves 72 which are centrosymmetric are arranged on the upper side of the cross plate 15, winding wheels 52 which are bilaterally symmetric with respect to the auxiliary shaft 45 are abutted on the upper side of the cross plate 15, a through groove 51 which is vertically communicated is arranged in the winding wheels 52, an auxiliary spline sleeve 46 which is splined with the auxiliary shaft 45 is arranged in the through groove 51, bilaterally symmetric sliding sleeves 50 are fixed on the outer side of the auxiliary spline sleeve 46, two groups of symmetric rotating pieces are arranged on the left and right sides of the sliding sleeve 50, one group of the rotating, the two support rods 14 are rotatably connected with a moving rod 13 which is slidably connected with the inner wall of the sliding groove 72 on the side away from the auxiliary shaft 45, a threaded shaft 47 is rotatably connected with the upper side of the auxiliary shaft 45, a fixed cross rod 48 fixed on the inner wall of the rear side of the cavity 12 is fixedly connected with the upper side of the threaded shaft 47, a threaded sleeve 49 rotatably connected with the upper side of the sliding sleeve 50 is in threaded connection with the outer side of the threaded shaft 47, a moving groove 44 positioned on the rear side of the threaded sleeve 49 is arranged on the inner wall of the rear side of the cavity 12, a moving plate 41 is slidably connected with the inner wall of the moving groove 44, a fixed motor 42 is fixed on the lower side of the moving plate 41, a driving wheel 43 is rotatably connected with the lower side of the fixed motor 42, a vertical section of an L-shaped rod 40 fixed on the, a main motor 38 fixed on the upper side of the first fixed block 37 is rotatably connected to the rear side of the engaging wheel 39, the main motor 38 rotates the engaging wheel 39 counterclockwise, so that the L-shaped rod 40 drives the moving plate 41 to move leftwards along the inner wall of the moving groove 44, the fixed motor 42 rotates the driving wheel 43, the driving wheel 43 engages with the threaded sleeve 49 so that the threaded sleeve 49 moves downwards along the threaded shaft 47, the threaded sleeve 49 pushes the sliding sleeve 50 to move downwards along the secondary spline sleeve 46, the sliding sleeve 50 slides the lower side of the moving rod 13 along the inner wall of the sliding groove 72 to the side far away from the secondary shaft 45 through the supporting rod 14, so that the moving rod 13 tightly supports the inner wall of the through groove 51, the motor 23 rotates the secondary gear 22, and the secondary gear 22 drives the gear 24 to rotate the primary shaft 25, the main shaft 25 rotates the auxiliary shaft 45 through the belt 21, the rotating block 20 and the one-way teeth 18 can prevent the auxiliary shaft 45 from being pulled by the cable in the reverse direction, the auxiliary shaft 45 rotates through the moving rod 13 to make the winding wheel 52 drive the cross plate 15 to rotate, at this time, the supporting block 16 drives the roller 75 to slide along the inner wall of the annular groove 74, and the winding wheel 52 rotates to perform cable retracting work.

The use steps herein are described in detail below with reference to fig. 1-6:

initially, the motor 23, the fixed motor 42, and the main motor 38 are in the closed state, the compression spring 63 and the extension spring 64 are in the extended state, the compression spring 53 and the spring 55 are in the compressed state, the fixed spring 31 is in the relaxed state, the moving plate 41 is located on the right side of the inner wall of the moving groove 44, and the lower side of the moving rod 13 is located on the inner wall of the sliding groove 72 near the auxiliary shaft 45.

In operation, the winding wheel 52 for winding the cable is placed on the upper side of the cross plate 15, the main motor 38 is started to rotate the engaging wheel 39, the engaging wheel 39 is meshed to enable the L-shaped rod 40 to push the moving plate 41 to move leftwards along the inner wall of the moving groove 44, the driving wheel 43 is abutted with the right side of the threaded sleeve 49, the fixed motor 42 is started to enable the driving wheel 43 to rotate, the driving wheel 43 enables the threaded sleeve 49 to rotate, the threaded sleeve 49 rotates to move downwards through the action of the threads, the threaded sleeve 49 pushes the sliding sleeve 50 to move downwards along the auxiliary spline sleeve 46, the sliding sleeve 50 enables the lower side of the moving rod 13 to move towards the side far away from the auxiliary shaft 45 along the inner wall of the sliding groove 72 through the supporting rod 14, the moving rod 13 is abutted with the inner wall of the through groove 51, the winding wheel 52 is supported tightly, the cable passes through the connecting cavity 27 to be placed between the guide wheel 29, finally, the auxiliary gear 22 is fixed on the outer side of the winding wheel 52, the motor 23 is started to rotate the auxiliary gear 22, the auxiliary gear 22 enables the gear 24 to drive the main shaft 25 to rotate through meshing, the main shaft 25 enables the auxiliary shaft 45 to rotate through the belt 21, at the moment, the auxiliary shaft 45 rotates clockwise in a overlooking mode, the auxiliary shaft 45 drives the rotating block 20 to rotate, the connecting rod 70 is enabled to abut against the one-way tooth 18 to rotate clockwise, the effect of preventing the winding wheel 52 from being pulled back by cables in a reverse direction is achieved between the connecting rod 70 and the one-way tooth 18, the auxiliary shaft 45 rotates to enable the auxiliary spline sleeve 46 to drive the sliding sleeve 50 to rotate together, the sliding sleeve 50 enables the winding wheel 52 to rotate through the supporting rod 14 and the moving rod 13, the winding wheel 52 rotates to retract the cables, the connecting box 26 reciprocates up and down along the main shaft 25 while the main shaft 25 rotates to drive, the spline sleeve 35 is rotated on the upper side of the connecting box 26, the connecting box 26 makes the rotating wheel 34 rotate together, the rotating wheel 34 makes the upper horizontal section of the concave rod 32 move rightwards along the abutting block 33 through meshing, at the moment, the fixed spring 31 is stretched, at the moment, the lower horizontal section of the fixed spring 31 makes the sliding block 30 slide rightwards along the upper inner wall of the connecting cavity 27, so that the rotating rod 28 rotates clockwise, and drives the guide wheel 29 to move clockwise, so that the cable is clamped, so that the cable between the winding wheel 52 and the pressing wheel 73 is straightened, which is beneficial to cable winding, when the connecting box 26 drives the fixed plate 56 to move upwards, because the upper abutting rod 67 abuts against the left sawtooth of the connecting rod 36, the engaging rod 66 moves downwards along the auxiliary fixed block 54, at the moment, the spring 55 is compressed, at the same time, the sliding block 57 moves downwards along the front side of the fixed plate 56, the engaging rod 66 makes the, at this time, the extension spring 64 is extended, so that the secondary pulley 60 presses the cable downwards, so that the wound cable can be wound more tightly, when the connecting box 26 drives the fixing plate 56 to move downwards, due to the abutment of the lower abutment rod 67 and the left sawtooth of the connecting rod 36, the engagement rod 66 moves upwards along the secondary fixing block 54, so that the sliding block 57 moves upwards along the front side of the fixing plate 56, the left side of the extension rod 58 moves upwards along the inner wall of the first sliding groove 68, so that the pulley 59 pushes the cable upwards, and the winding cable has the effect of making the wound cable wound more tightly, and at this time, the compression spring 63 is compressed.

When the operation is finished, the main motor 38 is started, so that the movable plate 41 drives the fixed motor 42 to move rightwards, the winding wheel 52 wound with the cable is taken down from the device, and the motor 23, the fixed motor 42 and the main motor 38 are closed.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a device is withdrawed in cable winding, includes first box, be equipped with upside and right side open-ended cavity in the first box, cavity downside inner wall rotates and is connected with the main shaft of establishing the spline groove in, its characterized in that: the upper side of the main shaft is rotationally connected with a first fixed block fixed on the inner wall of the rear side of the cavity, the main shaft is slidably connected with a connecting box, a connecting cavity which is communicated from left to right is arranged in the connecting box, a fixed plate which extends leftwards is fixed on the left side of the connecting box, the fixed plate is slidably connected with a connecting rod of which the upper side is fixed on the first fixed block and the left side is provided with sawteeth, the left side of the connecting rod is provided with an auxiliary fixed block fixed on the front side of the fixed plate, the auxiliary fixed block is slidably connected with connecting rods which are symmetrical up and down, the connecting rods are fixed with sliding blocks which are slidably connected on the front side of the fixed plate and positioned on the lower side of the auxiliary fixed block, a spring which surrounds the connecting rods is arranged between the sliding blocks and the auxiliary, a compression spring is arranged between the vertical section of the butt rod and the joint rod, the joint rod is fixed with an extension rod which is positioned at the lower side of the sliding block and extends leftwards, the left side of the extension rod is provided with a concave plate which is connected with the front side of the sliding block in a sliding way and is bilaterally symmetrical, the lower side of the concave plate is rotationally connected with a rotating wheel, the upper side of the concave plate is provided with a connecting plate which is fixed at the front side of the fixed plate, two symmetrical compression springs are arranged between the connecting plate and the concave plate, the inner wall of a groove of the concave plate is connected with a sliding plate which extends downwards in a sliding way, an extension spring is arranged between the sliding plate and the connecting plate, the lower side of the sliding plate is rotationally connected with an auxiliary rotating wheel which is positioned at the upper side of the rotating wheel, the right side of the sliding plate is, the connecting cavity is internally provided with a straightening device for straightening the cable, and the left side of the fixing plate is provided with a withdrawing device for withdrawing the cable.

2. A cable winding retraction device as claimed in claim 1, wherein: the device of flare-outing include sliding connection in the slider of connecting chamber upside inner wall, the slider downside rotates and is connected with downwardly extending's bull stick, the bull stick rotates to be connected with and is located the leading wheel of slider downside, the leading wheel downside be equipped with rotate connect in the bull stick just rotate connect in the pinch roller of inner wall around the connecting chamber, slider right side fixedly connected with upside horizontal segment sliding connection in the spill pole of connecting box upside and longitudinal symmetry, spill pole vertical section with be equipped with fixing spring between the connecting box right side, spill pole upside horizontal segment sliding connection has and is fixed in the butt piece of connecting box upside, the butt piece meshing be connected with rotate connect in the runner wheel of connecting box upside, the runner internal fixation have the spline connect in the spline sleeve of main shaft.

3. A cable winding retraction device as claimed in claim 2, wherein: the withdrawing device comprises a fixed box which is fixed on the inner wall of the lower side of the cavity and positioned on the left side of the fixed plate, a fixed cavity with an upper side and a right side opening is arranged in the fixed box, the inner wall of the lower side of the fixed cavity is rotatably connected with an auxiliary shaft which extends upwards, the auxiliary shaft is connected with the main shaft through a belt, a gear which is fixed on the main shaft is arranged on the lower side of the belt, the left side of the gear is meshed and connected with an auxiliary gear, the lower side of the auxiliary gear is rotatably connected with a motor which is fixed on the inner wall of the lower side of the cavity, the auxiliary shaft is fixedly provided with a rotating block which extends from the upper side to the left side of the belt, the rear side of the rotating block is rotated with a connecting rod which extends to the side far away from the auxiliary shaft, a supporting spring, the upper side of the fixed box is provided with an annular groove which is symmetrical about the center of the auxiliary shaft, the inner wall of the annular groove is connected with four idler wheels which are distributed in a centrosymmetric manner in a sliding manner, the idler wheels are connected with symmetrical supporting blocks in a rotating manner, cross plates which are symmetrical in the center are fixed on the upper sides of the four supporting blocks, four sliding grooves which are symmetrical in the center are arranged on the upper sides of the cross plates, winding wheels which are symmetrical left and right about the auxiliary shaft are abutted against the upper sides of the cross plates, through grooves which are communicated up and down are arranged in the winding wheels, auxiliary spline sleeves which are connected with the auxiliary shaft in a spline manner are arranged in the through grooves, sliding sleeves which are symmetrical left and right are arranged on the outer sides of the auxiliary spline sleeves, two groups of symmetrical rotating parts are arranged on the left and right sides of the sliding sleeves, one group of the, the countershaft upside rotates and is connected with the screw thread axle, screw thread axle upside fixedly connected with is fixed in the fixed horizontal pole of cavity rear side inner wall, screw thread axle outside threaded connection rotate connect in the threaded sleeve of sliding sleeve upside, cavity rear side inner wall is equipped with and is located the shifting chute of threaded sleeve rear side, shifting chute inner wall sliding connection has the movable plate, the movable plate downside is fixed with fixed motor, the fixed motor downside rotates and is connected with the drive wheel, the fixed motor right side is equipped with vertical section and is fixed in the L shape pole of movable plate downside, the meshing of L shape pole horizontal segment downside is connected with links up the wheel, it is connected with in to link up the rotation of wheel rear side is fixed in the main motor of first fixed block upside.