CN210516330U - Rotating shaft assembly for twisted wire pay-off rack - Google Patents

Abstract

The utility model relates to a pivot subassembly for twisted pair wire pay off rack relates to the technical field of electric wire and cable production, and its technical problem that solves is, reduces the wire rod pulling take-up reel and rotates required power to reduce the damage to the wire rod. This pivot subassembly sets up in the bed frame, this pivot subassembly including rotate set up in the drive pivot and the cover of bed frame are located the installation pivot of drive pivot, the installation pivot is used for installing the take-up reel, the installation pivot with rotate between the drive pivot and be connected, be provided with on the bed frame and order about drive pivot pivoted first drive division, be provided with the assistance in the drive pivot installation pivot pivoted second drive division.

Description

Rotating shaft assembly for twisted wire pay-off rack

Technical Field

The utility model belongs to the technical field of the technique of wire and cable production and specifically relates to a pivot subassembly for twisted pair wire pay off rack is related to.

Background

Pay off rack, it is one kind with supporting such as stranding machine or coiling machine, play the auxiliary assembly of unwrapping wire effect, along with domestic appliance, the rapid development of electronic communication trade, the wire rod of preparation stranded conductor is more and more thin and wire rod quantity, current pay off rack utilizes stranding machine pulling wire rod, make the take-up reel rotate on the pay off shaft and pay off passively, nevertheless to some bulky, the heavy take-up reel of weight, the increase of take-up reel self weight has leaded to the increase of frictional force, only cable wire has the risk of broken string easily in the course of working.

Referring to the utility model patent with publication number CN208315287U, a wire-releasing support for twisted wire is disclosed, comprising a body, two sets of traction wheel devices arranged on the upper portion of the front end face of the body, a guide wheel support arranged on one side of the body, a guide wheel upright post arranged on the guide wheel support, a guide wheel arranged on the guide wheel upright post, a middle support seat arranged in the middle of the lower portion of the front end face of the body, support seats arranged on both sides of the middle, a middle clamping seat arranged on the middle support seat, middle clamping shafts arranged at both ends of the middle clamping seat through bearings, belt discs arranged on the shaft body of each middle clamping shaft, a motor correspondingly connected with each belt disc through a belt, a clamping seat arranged on the upper portion of the support seat, a shaft sleeve passing through the clamping seat, the shaft sleeve connected with the clamping seat through threads, and a clamping shaft arranged at the end of the shaft sleeve opposite to the middle clamping shaft, the other end is provided with a hand wheel.

Before the wire winding machine is used, the shaft sleeve is moved leftwards to be opened by rotating the hand wheel, the wire winding disc wound with wires is placed into the clamping shaft, then the hand wheel is rotated reversely to enable the shaft sleeve to move rightwards to be folded, the wires of each wire winding disc are led out by the guide wheel after passing through the first traction wheel, the second traction wheel and the third traction wheel respectively, and the wire winding machine is characterized in that four wire winding grooves are uniformly distributed on the wheel surface of the second traction wheel, three wire winding grooves are uniformly distributed on the wheel surface of the third traction wheel, the wire winding forms of the wire winding machine are various, and the tension of the wires can be further ensured by repeatedly winding and drawing through the second traction wheel and the third traction wheel preferably.

However, in the actual use process, under the influence of factors such as friction force, the moving speed of a plurality of wires has certain deviation, but the distance between the first traction wheel, the second traction wheel and the third traction wheel is not changed, when the actual moving speed of the wires is less than the rotating speed of the winding roll, the wires on the bracket can be loosened to influence the quality of the stranded wires in the next process, and when the actual moving speed of the wires is greater than the rotating speed of the winding roll, the wires on the bracket can be tightened or even stretched, so that the wires are damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pivot subassembly for to stranded conductor pay off rack, its technical problem that solve is, reduces the wire rod and stimulates the take-up reel and rotate required power to reduce the damage to the wire rod.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a rotating shaft assembly for a twisted pair pay-off rack is arranged on a base frame and comprises a driving rotating shaft and an installation rotating shaft, wherein the driving rotating shaft is rotatably arranged on the base frame, the installation rotating shaft is sleeved on the driving rotating shaft and used for installing a winding roll, the installation rotating shaft is rotatably connected with the driving rotating shaft, a first driving part for driving the driving rotating shaft to rotate is arranged on the base frame, and a second driving part for assisting the installation rotating shaft to rotate is arranged on the driving rotating shaft;

the installation pivot is gone up coaxial fixed and is provided with surmount ratchet, the second drive division including fixed set up in the installation dish of installation pivot, rotate in the installation pivot be provided with surmount ratchet complex pawl and order about the second elastic component that the pawl resets, the second elastic component provides the pawl orientation the elasticity of surmount ratchet.

By adopting the technical scheme, the front end of the wire is coiled to pull the mounting rotating shaft to rotate, and the first driving part drives the driving rotating shaft to rotate, so that the force required by overcoming friction when the mounting rotating shaft rotates is reduced, the force required by the wire to pull the winding roll to rotate is smaller, and the stretching of the wire in the winding and pulling moving process is reduced;

when the moving speed of wire rod is less than the rotation linear velocity of installation pivot, the installation pivot is followed the synchronous rotation of drive pivot under the effect of second drive division, when the moving speed of wire rod is greater than the rotation linear velocity of installation pivot, relative rotation between installation pivot and the drive pivot, therefore, make the rotational speed of installation pivot adjust according to the wire rod moving speed of reality, make the process that this pivot subassembly assisted cooperation conveying wire rod is more stable, thereby make the power that receives on the wire rod take place evenly stably, reduce the damage that is greater than the wire rod.

The utility model discloses further set up to: the first driving portion comprises a driving motor fixedly arranged on the base frame, a first synchronizing wheel is coaxially fixed on an output shaft of the driving motor, a second synchronizing wheel is coaxially and fixedly arranged at one end of the driving rotating shaft, and a synchronous belt is arranged between the first synchronizing wheel and the second synchronizing wheel in a wrapping mode.

Through adopting above-mentioned technical scheme, driving motor orders about first synchronizing wheel and rotates, and the hold-in range drives the rotation of second synchronizing wheel following first synchronizing wheel to make the drive pivot rotate.

The utility model discloses further set up to: the end part of the driving rotating shaft, far away from the driving motor, is provided with a threaded section, the threaded section is connected with an anti-falling sleeve in a threaded manner, and the anti-falling sleeve is positioned on one side, far away from the overrunning ratchet wheel, of the mounting rotating shaft.

Through adopting above-mentioned technical scheme, the anticreep cover is contradicted in the installation pivot and is kept away from the one end of surmounting ratchet, and the anticreep cover cooperates with the position of restriction installation pivot in the drive pivot with surmounting ratchet to avoid the installation pivot to break away from the drive pivot in the course of the work.

The utility model discloses further set up to: the diameter of the outer ring of the anti-falling sleeve is larger than that of the outer ring of the mounting rotating shaft.

Through adopting above-mentioned technical scheme, the anticreep cover is contradicted in the take-up reel and is kept away from one side of surmounting ratchet, and the anticreep cover cooperates with the position of restriction take-up reel in the drive pivot with surmounting ratchet to avoid the take-up reel to break away from the drive pivot in the course of the work.

The utility model discloses further set up to: and a plurality of anti-skid protrusions are arranged on the outer circular surface of the mounting rotating shaft at intervals along the circumferential direction.

Through adopting above-mentioned technical scheme, increase the friction between take-up reel and the installation pivot to make the take-up reel install on the installation pivot steadily.

The utility model discloses further set up to: the diameter of the outer ring of the overrunning ratchet wheel is larger than that of the outer ring of the mounting rotating shaft.

Through adopting above-mentioned technical scheme, one side of take-up reel is contradicted in surpassing formula ratchet in order to restrict the slip of take-up reel in the installation pivot.

The utility model discloses further set up to: the installation rotating shaft is coaxially and fixedly provided with a brake wheel, and the brake wheel is positioned at one end of the overrunning ratchet wheel far away from the first driving part.

By adopting the technical scheme, when the friction force of the brake wheel is increased, the rotating speed of the installation rotating shaft is reduced so as to control the rotating speed of the installation rotating shaft.

To sum up, the utility model discloses a beneficial technological effect does:

1. when the moving speed of the wire rod is lower than the rotating linear speed of the mounting rotating shaft, the mounting rotating shaft synchronously rotates along with the driving rotating shaft under the action of the second driving part, and when the moving speed of the wire rod is higher than the rotating linear speed of the mounting rotating shaft, the mounting rotating shaft and the driving rotating shaft relatively rotate, so that the rotating speed of the mounting rotating shaft can be adjusted according to the actual moving speed of the wire rod, the process that the rotating shaft assembly assists in matching and conveying the wire rod is more stable, the force applied to the wire rod is uniform and stable, and the damage larger than the wire rod is reduced;

2. the anti-slip sleeve is abutted against one end, far away from the overrunning ratchet, of the mounting rotating shaft, and the anti-slip sleeve is matched with the overrunning ratchet to limit the position of the mounting rotating shaft on the driving rotating shaft so as to prevent the mounting rotating shaft from being separated from the driving rotating shaft in the working process.

Drawings

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

fig. 2 is a schematic view of the installation structure of the present invention;

fig. 3 is a schematic structural view of the spindle assembly.

In the figure, 1, a base frame; 2. a rotating shaft assembly; 21. driving the rotating shaft; 211. a threaded segment; 22. installing a rotating shaft; 23. a first driving section; 231. a drive motor; 232. a first synchronizing wheel; 233. a second synchronizing wheel; 234. a synchronous belt; 24. a second driving section; 241. an overrunning ratchet; 242. mounting a disc; 243. a pawl; 244. a second elastic member; 25. the anti-drop sleeve; 3. a tension adjusting mechanism; 31. fixing a rod; 32. a fixed wheel sleeve; 33. a movable wheel sleeve; 34. a first traction wheel; 341. a first wire passing groove; 35. a second traction wheel; 351. a second wire passing groove; 36. a first elastic member; 4. a rotational speed adjusting mechanism; 41. a rotating rod; 42. a guide slide bar; 43. a rotation guide sleeve; 44. a traction sleeve; 45. a brake wheel; 46. a braking band; 47. a brake lever; 47. a distance limiting part; 471. a first distance limiting plate; 472. a second distance limiting plate; 473. a distance adjusting block; 474. and (4) a distance adjusting groove.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 and 2, for the utility model discloses a twisted pair wire pay off rack, including bed frame 1, be provided with pivot subassembly 2, tension adjustment mechanism 3 and speed adjustment mechanism 4 on the bed frame 1.

Referring to fig. 2 and 3, the rotating shaft assembly 2 includes a driving rotating shaft 21 rotatably disposed on the base frame 1 and a mounting rotating shaft 22 sleeved on the driving rotating shaft 21.

The mounting shaft 22 is used for mounting a winding roll around which a wire is wound. The mounting shaft 22 is arranged in a circular tube shape. The axis of the mounting rotation shaft 22 is arranged in the horizontal direction. Preferably, a plurality of anti-slip protrusions are arranged on the outer circumferential surface of the mounting rotating shaft 22 at intervals along the circumferential direction. The anti-slip protrusions are arranged in a long strip shape and extend along the axial direction of the installation rotating shaft 22.

The driving rotating shaft 21 is arranged in a cylinder, and the axis of the driving rotating shaft 21 is overlapped with the axis of the mounting rotating shaft 22. The mounting rotating shaft 22 is rotatably connected with the driving rotating shaft 21. Preferably, a ball bearing is arranged between the driving rotating shaft 21 and the mounting rotating shaft 22, an inner ring of the ball bearing is connected with the mounting rotating shaft 22 in a clamping manner, and an outer ring of the ball bearing is connected with the inner wall of the driving rotating shaft 21 in a clamping manner.

Further, the base frame 1 is provided with a first driving portion 23 for driving the driving shaft 21 to rotate.

The first driving part 23 includes a driving motor 231 fixedly provided to the base frame 1. A first synchronizing wheel 232 is coaxially fixed on an output shaft of the driving motor 231, a second synchronizing wheel 233 is coaxially fixed on one end of the driving rotating shaft 21, and a synchronous belt 234 is wrapped between the first synchronizing wheel 232 and the second synchronizing wheel 233. The driving motor 231 drives the first synchronous wheel 232 to rotate, and the synchronous belt 234 drives the second synchronous wheel 233 to rotate along with the first synchronous wheel 232, so as to rotate the driving shaft 21.

Further, the driving shaft 21 is provided with a second driving portion 24 for assisting the rotation of the mounting shaft 22.

The installation rotating shaft 22 is coaxially and fixedly provided with an overrunning type ratchet 241. The overrunning ratchet 241 is located at one end of the mounting shaft 22 close to the driving motor 231. The overrunning ratchet 241 is arranged in a circular ring shape, and the teeth of the overrunning ratchet 241 are located on the inner wall of the circular ring. The outer ring diameter of the overrunning ratchet 241 is larger than that of the mounting shaft 22. One side of the spool abuts against the over-riding ratchet 241 to limit the sliding of the spool on the mounting shaft 22. Preferably, the overriding ratchet 241 is integrally formed with the mounting shaft 22.

The second driving portion 24 includes a mounting plate 242 fixedly provided to the mounting shaft 22. The mounting plate 242 is located at the middle of the mounting shaft 22. The mounting plate 242 is disposed in a disc shape, and the center of the mounting plate 242 is located on the axis of the mounting shaft 22. The diameter of the mounting plate 242 is smaller than the inner diameter of the overrunning ratchet 241. Preferably, the mounting plate 242 is integrally formed with the drive shaft 21.

The mounting shaft 22 is rotatably provided with a pawl 243 engaged with the overrunning ratchet 241 and a second elastic member 244 for restoring the pawl 243. The second elastic member 244 is a compression spring, a coil spring, or a torsion spring, and the second elastic member 244 provides the pawl 243 with an elastic force toward the overriding ratchet 241. One end of the second elastic member 244 is fixedly connected to the pawl 243, and the other end of the second elastic member 244 is fixedly connected to the mounting plate 242.

When the moving speed of the wire is higher than the rotating linear speed of the mounting rotating shaft 22, the mounting rotating shaft 22 and the driving rotating shaft 21 rotate relatively; when the moving speed of the wire is less than the rotating linear speed of the mounting spindle 22, the mounting spindle 22 rotates synchronously with the driving spindle 21 by the second driving part 24. From this for the rotational speed of installation pivot 22 can be adjusted according to the wire rod moving speed of reality, makes the supplementary cooperation of this pivot subassembly 2 carry the process of wire rod more stable, thereby makes the power that receives on the wire rod take place evenly stably, reduces the damage that is greater than the wire rod.

Further, the end of the driving shaft 21 away from the driving motor 231 has a threaded section 211, and the threaded section 211 is threadedly connected with the anti-drop sleeve 25. Preferably, the outer diameter outer ring diameter of the anti-slip sleeve 25 is larger than that of the mounting rotating shaft 22. The anti-slip sleeve 25 abuts against one end of the installation rotating shaft 22 far away from the overrunning ratchet 241, and the anti-slip sleeve 25 is matched with the overrunning ratchet 241 to limit the position of the installation rotating shaft 22 on the driving rotating shaft 21 so as to prevent the installation rotating shaft 22 from being separated from the driving rotating shaft 21 in the working process.

Referring to fig. 1 and 2, the tension adjusting mechanism 3 includes a fixed bar 31 fixedly provided to the base frame 1. The axis of the fixed bar 31 is arranged in the vertical direction.

The fixed rod 31 is sleeved with a fixed wheel sleeve 32 and a movable wheel sleeve 33. The fixed wheel sleeve 32 is positioned at the upper end of the fixed rod 31 and is fixedly connected with the fixed rod 31. The movable wheel sleeve 33 is located below the fixed rod 31 and slides along the axial direction of the fixed rod 31.

The fixed wheel sleeve 32 is rotatably provided with a first traction wheel 34, and the movable wheel sleeve 33 is rotatably provided with a second traction wheel 35. The axial direction of the first traction wheel 34 is the same as the axial direction of the mounting rotating shaft 22, and the axial direction of the second traction wheel 35 is the same as the axial direction of the first traction wheel 34.

Further, at least two first wire passing grooves 341 are circumferentially arranged on the outer circumferential surface of the first traction wheel 34, all the first wire passing grooves 341 are distributed at intervals along the axial direction of the first traction wheel 34, at least two second wire passing grooves 351 are circumferentially arranged on the outer circumferential surface of the second traction wheel 35, and all the second wire passing grooves 351 are distributed at intervals along the axial direction of the second traction wheel 35. Preferably, the number of the first string passing grooves 341 is the same as that of the second string passing grooves 351. Instead, the number of the first string-passing grooves 341 is one more than the number of the second string-passing grooves 351. The first string passing groove 341 is matched with the second string passing groove 351 so that the wire can be wound on the first traction wheel 34 and the second traction wheel 35 for a plurality of turns, thereby dispersing the force exerted on the wire by the second traction wheel 35 and reducing the damage to the wire.

Furthermore, a first elastic member 36 is arranged between the fixed wheel sleeve 32 and the movable wheel sleeve 33, one end of the first elastic member 36 is fixedly connected with the fixed wheel sleeve 32, and the other end of the first elastic member 36 is fixedly connected with the movable wheel sleeve 33. Preferably, the first elastic member 36 is a tension spring. One end of the first elastic member 36 is hooked and connected with the lower end face of the fixed wheel sleeve 32, and the other end of the first elastic member 36 is hooked and connected with the upper end face of the movable wheel sleeve 33. Both ends of the first elastic member 36 are fixedly connected with the fixed wheel sleeve 32 and the movable wheel sleeve 33, respectively, so that the distance variation between the fixed wheel sleeve 32 and the movable wheel sleeve 33 is stabilized within a proper range, thereby improving the tension adjustment stability of the tension adjustment mechanism 3.

Referring to fig. 1 and 2, the rotation speed adjusting mechanism 4 includes a rotating rod 41 rotatably connected to the base frame 1 and a slide guiding rod 42 fixedly disposed on the base frame 1.

The rotating rod 41 is located on the side of the fixed rod 31 far away from the installation rotating shaft 22. The rotation axis of the rotating rod 41 is parallel to the axis of the mounting rotating shaft 22. The rotating rod 41 is sleeved with a guide rotating sleeve 43 and a traction sleeve 44. The rotation guide sleeve 43 and the pulling sleeve 44 both slide in the axial direction of the rotating rod 41. The rotation guide sleeve 43 is hinged with the driving wheel sleeve 33. When the movable wheel sleeve 33 slides, the rotation guide sleeve 43 is driven to slide so as to rotate the rotating rod 41, and the rotating rod 41 rotates so as to adjust the distance between the traction sleeve 44 and the sliding guide rod 42.

The axis of the guide rod 42 is arranged in the vertical direction. The guide rod 42 is located on the side of the rotating rod 41 near the installation rotating shaft 22. The upper end of the guide slide rod 42 is provided with a limiting through hole, and the axis of the limiting through hole is arranged along the horizontal direction and is perpendicular to the axis of the installation rotating shaft 22. A brake rod 47 is arranged in the limiting through hole in a sliding mode, and the axis of the brake rod 47 is overlapped with the axis of the limiting through hole. The brake lever 47 slides in a direction to approach or separate from the mounting rotating shaft 22. One end of the brake lever 47 is hingedly connected to the traction sleeve 44.

A brake wheel 45 is coaxially and fixedly arranged on the mounting rotating shaft 22. The brake wheel 45 is located at one end of the overrunning ratchet wheel 241 remote from the driving motor 231. The diameter of the brake wheel 45 is larger than the diameter of the outer ring of the mounting shaft 22. Preferably, the diameter of the brake wheel 45 is greater than or equal to the outer ring diameter of the overrunning ratchet 241.

A braking band 46 is mounted on the outer circumferential surface of the braking wheel 45. One end of the brake band 46 is fixedly connected to the rod 42, and the other end of the brake band 46 passes around the outer circumferential surface of the brake wheel 45 to be fixedly connected to the other end of the brake lever 47. The brake lever 47 moves the brake band 46 to change the friction between the brake band 46 and the brake wheel 45, so as to control the rotation speed of the driving shaft 21.

Further, a distance limiting portion 47 is provided between the rotation guide sleeve 43 and the traction sleeve 44. The distance limiting portion 47 includes a first distance limiting plate 471 fixedly disposed on the rotation guide sleeve 43 and a second distance limiting plate 472 fixedly disposed on the traction sleeve 44.

The first distance limiting plate 471 and the second distance limiting plate 472 are both arranged in a long plate shape. The first distance plate 471 has a longitudinal direction identical to the axial direction of the rotating lever 41, and the second distance plate 472 has a longitudinal direction identical to the axial direction of the rotating lever 41. Preferably, a side of the first distance limiting plate 471 close to the fixed rod 31 interferes with a side of the second distance limiting plate 472 far from the fixed rod 31.

The second distance limiting plate 472 is provided with a distance adjusting groove 474. The pitch groove 474 is a kidney-shaped through groove. The pitch groove 474 is provided along the axial direction of the rotating rod 41. The second distance limiting plate 472 is fixedly provided with a distance adjusting block 473 fitted into the distance adjusting groove 474. The distance adjustment block 473 is slidably connected to the distance adjustment groove 474. The distance adjustment block 473 slides in the distance adjustment groove 474 to limit the distance between the rotating guide sleeve 43 and the traction sleeve 44.

The implementation principle of the embodiment is as follows:

(1) and (3) tension adjustment:

the winding roll wound with the wire is arranged on the installation rotating shaft 22, the anti-release sleeve 25 is in threaded connection with the threaded section 211 of the driving rotating shaft 21 so that the anti-release sleeve 25 is abutted to one side, away from the overrunning ratchet 241, of the winding roll, the wire is sequentially wound to pass through the first traction wheel 34 and the second traction wheel 35 and then leaves from the first traction wheel 34, and the driving wheel sleeve 33 slides downwards under the action of gravity so that the wire is kept in a straight state all the time;

(2) adjusting the rotating speed:

when the moving speed of the wire is greater than the rotating linear speed of the mounting rotating shaft 22, the mounting rotating shaft 22 and the driving rotating shaft 21 relatively rotate, the rotating wheel sleeve 33 drives the rotating guide sleeve 43 to slide when sliding so as to rotate the rotating rod 41, the rotating rod 41 rotates so as to adjust the distance between the traction sleeve 44 and the sliding guide rod 42, and therefore the brake rod 47 drives the brake belt 46 to move so as to change the friction force between the brake belt 46 and the brake wheel 45;

when the moving speed of the wire rod is less than the rotating linear speed of the mounting rotating shaft 22, the driving motor 231 drives the driving rotating shaft 21 to rotate, and the mounting rotating shaft 22 rotates synchronously with the driving rotating shaft 21 under the action of the second driving part 24.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (7)

1. A rotating shaft assembly for a twisted pair pay-off rack is arranged on a base frame (1), and is characterized in that the rotating shaft assembly (2) comprises a driving rotating shaft (21) rotatably arranged on the base frame (1) and an installation rotating shaft (22) sleeved on the driving rotating shaft (21), the installation rotating shaft (22) is used for installing a winding roll, the installation rotating shaft (22) is rotatably connected with the driving rotating shaft (21), a first driving part (23) for driving the driving rotating shaft (21) to rotate is arranged on the base frame (1), and a second driving part (24) for assisting the installation rotating shaft (22) to rotate is arranged on the driving rotating shaft (21);

the installation pivot (22) is gone up coaxial fixed being provided with and surpasss formula ratchet (241), second drive division (24) including fixed set up in installation dish (242) of installation pivot (22), rotate on installation pivot (22) be provided with surpass formula ratchet (241) complex pawl (243) and drive pawl (243) second elastic component (244) that reset, second elastic component (244) provide pawl (243) orientation surpass the elasticity of formula ratchet (241).

2. The rotating shaft assembly for the twisted pair pay-off stand as claimed in claim 1, wherein the first driving part (23) comprises a driving motor (231) fixedly arranged on the base frame (1), a first synchronizing wheel (232) is coaxially fixed on an output shaft of the driving motor (231), a second synchronizing wheel (233) is coaxially and fixedly arranged at one end of the driving rotating shaft (21), and a synchronous belt (234) is wrapped between the first synchronizing wheel (232) and the second synchronizing wheel (233).

3. The rotating shaft assembly for the twisted pair pay-off rack as claimed in claim 2, wherein the end of the driving rotating shaft (21) far away from the driving motor (231) is provided with a threaded section (211), a release-preventing sleeve (25) is connected to the threaded section (211) in a threaded manner, and the release-preventing sleeve (25) is positioned on one side of the mounting rotating shaft (22) far away from the overrunning ratchet wheel (241).

4. A spindle assembly for a twisted pair pay-off stand according to claim 3, characterized in that the outer ring diameter of the anti-slip sleeve (25) is larger than the outer ring diameter of the mounting spindle (22).

5. The rotating shaft assembly for the twisted wire pay-off rack as claimed in claim 1, wherein a plurality of anti-slip protrusions are arranged on the outer circumferential surface of the mounting rotating shaft (22) at intervals along the circumferential direction.

6. The rotating shaft assembly for the twisted wire pay-off rack as claimed in claim 1, wherein the outer ring diameter of the overrunning ratchet wheel (241) is larger than that of the mounting rotating shaft (22).

7. The rotating shaft assembly for the twisted wire pay-off rack as claimed in claim 1, wherein a brake wheel (45) is coaxially and fixedly arranged on the mounting rotating shaft (22), and the brake wheel (45) is located at one end of the overrunning ratchet wheel (241) far away from the first driving part (23).

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