A steel strand rapid threading device and a method of use

Abstract

The application discloses a kind of steel strand quick threading device and use method, threading device includes: guide ball;Fixed part, the fixed part has steel strand fixing mechanism, the steel strand fixing mechanism can fix simultaneously multiple steel strands;Universal connecting piece, the universal connecting piece is connected guide ball and fixed part respectively, so that guide ball and fixed part relatively universal rotation;The guide ball, fixed part and universal connecting piece are sequentially arranged according to the same direction, the fixed part and universal connecting piece are completely located in the projection area of guide ball in this direction;Multiple steel strands can be simultaneously threaded in one time, compared with the prior art that only one steel strand can be threaded in one time, threading efficiency is greatly improved.And since multiple steel strands are simultaneously threaded, there is no subsequent threading work in the same bellows, effectively avoiding the problem of mutual obstruction between the threaded steel strands and the newly threaded steel strands.

Description

Technical Field

[0001] This invention relates to the field of steel strand construction technology, specifically to a rapid steel strand threading device and its usage method. Background Technology

[0002] Prestressed concrete is widely used in concrete engineering, commonly in box girders and T-beams of bridges. Tensioning methods are divided into pre-tensioning and post-tensioning. Pre-tensioning involves tensioning the steel strands after the reinforcing bars are tied, followed by concrete pouring. Post-tensioning involves embedding corrugated pipes or other conduits within the reinforcing bars, pouring concrete, and finally threading the steel strands through the corrugated pipes for tensioning. During threading, the steel strands often come into direct contact with the corrugated pipes, which can easily damage the pipes and cause obstruction between existing and newly threaded strands, making the threading process time-consuming and labor-intensive. This phenomenon is particularly pronounced in threading steel strands in curved sections of prestressed concrete ducts.

[0003] Utility model patent application number CN201020254089.1 provides a bullet-shaped sleeve for threading prestressed duct strands in curved sections. The sleeve is fitted over the front end of the strands, with its rear half being a steel sleeve. A round steel head with the same diameter as the inner diameter of the steel sleeve is inserted into the front of the sleeve, and its rear end is fixedly connected inside the sleeve. The front part of the round steel head is bullet-shaped, and the outer ring of the insertion port of the round steel head is welded to the front end face of the steel sleeve. This bullet-shaped sleeve solves the problem of difficult threading of prestressed duct strands in curved sections, avoiding direct contact between the prestressed steel strands and the duct during threading, thus ensuring the quality of prestressed construction. It is also simple and convenient to manufacture, saves time and labor during construction, can be reused, and has a very low cost.

[0004] The bullet-shaped sleeve for threading prestressed duct strands in curved sections provided by the aforementioned patent can be widely applied to the threading construction of post-tensioned prestressed steel strands, especially in curved sections. However, it can only thread one strand at a time, resulting in low threading efficiency. Furthermore, during subsequent threading processes, the problem of mutual obstruction between already threaded strands and newly threaded strands cannot be avoided, and threading becomes increasingly difficult as the number of strands increases. Summary of the Invention

[0005] The purpose of this invention is to provide a quick steel strand threading device and method, which aims to improve the existing technology, which can only thread one steel strand at a time, resulting in low threading efficiency, and the inability to avoid mutual obstruction between the already threaded steel strand and the newly threaded steel strand during subsequent threading processes.

[0006] To achieve the above objectives, according to one aspect of the present invention, a rapid stranding device for steel strands is provided, comprising:

[0007] Guide ball;

[0008] The fastener has a steel strand fixing mechanism, which can simultaneously fix multiple steel strands.

[0009] Universal connector, which connects guide ball and fixing member respectively, so that guide ball and fixing member can rotate in all directions relative to each other;

[0010] The guide ball, the fixing component, and the universal connector are arranged sequentially in the same direction, with the fixing component and the universal connector completely located within the projection area of ​​the guide ball in that direction.

[0011] Furthermore, the universal connector includes a first connector, a second connector, an intermediate member, and four short shafts. The first and second connectors are respectively connected to a guide ball and a fixing member. Both the first and second connectors have a slot structure that can accommodate the intermediate member. The inner wall of the slot structure of the first and second connectors is provided with two hinge holes, and the two hinge holes on each connector share a central axis. The four short shafts are all disposed on the intermediate member. The four short shafts are divided into two groups, and the two short shafts in each group share a central axis. The central axes of the two groups of short shafts are perpendicular to each other. The intermediate member is hinged to the first and second connectors through the four short shafts, and the four short shafts are respectively inserted into the four hinge holes provided on the first and second connectors.

[0012] Furthermore, the intermediate component is a cylindrical structure with four mounting holes on its wall, which are evenly arranged along the circumference of the intermediate component. The four short shafts hinged to the first and second connectors are respectively inserted into one mounting hole and fixed to the intermediate component.

[0013] Furthermore, both the first connector and the second connector are semi-circular ring structures, and the outer diameters of both the first connector and the second connector are smaller than the diameter of the guide ball. Each of the two ends of the first connector is provided with a hinge hole, and each of the two ends of the second connector is also provided with a hinge hole.

[0014] Furthermore, the fixing component includes a cylinder with one end sealed and the other end open. The outer diameter of the cylinder is smaller than the diameter of the guide ball. The steel strand fixing mechanism is disposed on the cylinder, and the middle part of the sealed end of the cylinder is connected to a universal connector. The steel strand fixing mechanism includes a steel strip, a fixing block, and a fixing bolt. The fixing block is disposed on the outer wall of the cylinder. Both the fixing block and the cylinder wall are provided with through holes through which the steel strip can pass, and the through holes on the two are connected. One end of the steel strip is fixed to the inner wall of the cylinder and is fixed at the edge of the through hole provided on the cylinder. The other end of the steel strip passes through the through holes provided on the cylinder wall and the fixing block and is located outside the cylinder. The steel strip is annular inside the cylinder, and the inner wall of the annular steel strip is provided with an anti-slip structure. The fixing block is provided with a threaded hole leading to its through hole, and a fixing bolt is installed in the threaded hole.

[0015] Furthermore, the steel strand fixing mechanism also includes a limiting bolt. The outer wall of the cylinder is provided with a threaded hole for installing the limiting bolt. The limiting bolt is installed on the outer wall of the cylinder. Multiple limiting bolts are arranged along the circumference of the cylinder. The portion of the steel strip located outside the cylinder is pressed and fixed to the outer wall of the cylinder by the limiting bolt.

[0016] Furthermore, the fixing component includes a cylinder with one end sealed and the other end open. The outer diameter of the cylinder is smaller than the diameter of the guide ball. The steel strand fixing mechanism is mounted on the cylinder. The middle part of the sealed end of the cylinder is connected to a universal connector. The open end of the cylinder is provided with a threaded connection structure. The steel strand fixing mechanism includes a cylindrical tube and a disc. One end of the cylindrical tube is provided with a threaded structure that matches the threaded connection structure at the open end of the cylinder. The cylindrical tube and the cylinder are connected through the matching threaded connection structure and the threaded structure. The disc is located at the end of the cylindrical tube with the threaded structure. The disc has multiple through holes, and each through hole is provided with a fixing short tube. The wall of the fixing short tube has a threaded through hole leading to the inside of the tube, and a fixing bolt is installed in the threaded through hole. The steel strand passes through the through hole of the disc and the fixing short tube and is fixed by the tightened fixing bolt.

[0017] Furthermore, the fixing component includes a cylinder with one end sealed and the other end open. The outer diameter of the cylinder is smaller than the diameter of the guide ball. The steel strand fixing mechanism is mounted on the cylinder. The middle part of the sealed end of the cylinder is connected to a universal connector. The open end of the cylinder is provided with a threaded connection structure. The steel strand fixing mechanism includes a cylindrical tube and a disc. One end of the cylindrical tube is provided with a threaded structure that matches the threaded connection structure at the open end of the cylinder. The cylindrical tube and the cylinder are connected through the matching threaded connection structure and the threaded structure. The disc is located at the end of the cylindrical tube with the threaded structure. The disc has a rectangular through hole, and a rectangular fixing frame is provided at the rectangular through hole. The frame has two clamping plates, one on the left and one on the right, and both clamping surfaces of the clamping plates are provided with anti-slip structures. The front and rear frames of the rectangular fixing frame are provided with guide rectangular grooves. The length direction of the guide rectangular grooves is along the left-right direction, and the length direction of the clamping plates is along the front-back direction. At each end of the length direction of the clamping plates, there is a slider structure that matches the guide rectangular groove. The slider structure is located in the guide rectangular groove. The left and right frames of the rectangular fixing frame are provided with threaded through holes, and each threaded through hole is equipped with a clamping bolt. Each clamping bolt is used to drive the two clamping plates to move closer to each other to clamp the steel strand passing through the rectangular through hole of the disc and the rectangular fixing frame.

[0018] Furthermore, the inner wall of the cylinder opening end is provided with an internal thread structure, and the outer wall of one end of the round tube is provided with an external thread structure. When connecting the cylinder and the round tube, the external thread structure of the round tube is threaded into the internal thread structure of the cylinder.

[0019] According to a second aspect of the present invention, the present invention provides a method of using a quick stranding device for steel strands, comprising the following steps:

[0020] S100. Secure one end of multiple steel strands that need to be threaded through using a steel strand fixing mechanism with fasteners.

[0021] S200. Insert the guide ball, universal connector and fastener into the bellows;

[0022] S300, with the assistance of the threading machine, performs the threading of multiple steel strands at one time, so that the multiple steel strands are threaded from one end of the corrugated pipe to the other end under the drive of the threading machine and the guidance of the guide ball.

[0023] S400. After each steel strand passes through the corrugated pipe to the other end, operate the steel strand fixing mechanism to loosen each steel strand. This completes the threading of multiple steel strands.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1. This invention can thread multiple steel strands at once, which greatly improves threading efficiency compared to the prior art where only one steel strand can be threaded at a time.

[0026] 2. Since multiple steel strands are threaded simultaneously, there is no subsequent threading work in the same corrugated pipe, which effectively avoids the problem of mutual obstruction between the already threaded steel strands and the newly threaded steel strands.

[0027] 3. This invention provides a variety of steel strand fixing mechanisms, which improves the flexibility of steel strand threading and, to a certain extent, enhances the applicability and flexibility of this invention. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of the present invention from a top-down perspective;

[0029] Figure 2 This is a three-dimensional structural schematic diagram of Embodiment 1 of the present invention from an oblique elevation view.

[0030] Figure 3 These are three-dimensional structural schematic diagrams of Embodiments 2 and 3 of the present invention from a top-down perspective;

[0031] Figure 4 This is a three-dimensional structural schematic diagram of the universal connector of the present invention;

[0032] Figure 5 This is a front view of the universal connector of the present invention;

[0033] Figure 6 This is a three-dimensional structural schematic diagram of the steel strand fixing mechanism of the fixing member in Embodiment 2 of the present invention;

[0034] Figure 7 This is a top view of the steel strand fixing mechanism of the fixing member in Embodiment 2 of the present invention;

[0035] Figure 8 This is a three-dimensional structural schematic diagram of the steel strand fixing mechanism of the fixing member in Embodiment 3 of the present invention;

[0036] Figure 9 This is a top view of the steel strand fixing mechanism of the fixing member in Embodiment 3 of the present invention.

[0037] Reference numerals: 1. Guide ball; 2. Universal connector; 201. First connector; 202. Second connector; 203. Intermediate component; 204. Short shaft; 3. Fixing component; 301. Cylinder; 302. Steel strip; 303. Fixing block; 304. Fixing bolt; 305. Limiting bolt; 306. Round tube; 307. Disc; 308. Fixing short tube; 309. Fixing bolt; 310. Clamping bolt; 311. Rectangular fixing frame; 312. Clamping plate; 313. Guide rectangular groove; 314. Slider structure. Detailed Implementation

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0040] Example 1

[0041] A quick-threading device for steel strands, such as Figure 1 and Figure 2 As shown, the assembly includes a guide ball 1, a universal connector 2, and a fastener 3. The guide ball 1 can be a solid sphere made of plastic or a hollow sphere made of metal. The guide ball 1 can be a complete spherical structure or a non-complete spherical structure larger than half a sphere. The size of the guide ball 1 can be determined according to the inner diameter of the bellows; the diameter of the guide ball 1 must be smaller than the inner diameter of the bellows, and a notch is reserved at its lower part for connection with the universal connector 2.

[0042] like Figure 4 and Figure 5As shown, the universal connector 2 includes a first connector 201, a second connector 202, an intermediate connector 203, and four short shafts 204. Both the first connector 201 and the second connector 202 are semi-circular ring structures, with outer diameters smaller than the diameter of the guide ball 1. Each end of the first connector 201 and each end of the second connector 202 have a hinge hole on their inner sides. The intermediate connector 203 is a cylindrical structure with four mounting holes evenly distributed along its circumference. The central axes of any two non-adjacent mounting holes are collinear, while the central axes of any two adjacent mounting holes are perpendicular to each other. One short shaft 204 is installed in each of the four mounting holes and is welded to the intermediate connector 203. The intermediate component 203 is hinged to the first connecting component 201 and the second connecting component 202 via four short shafts 204. The four short shafts 204 are respectively hinged in four hinge holes provided on the first connecting component 201 and the second connecting component 202. The first connecting component 201 and the second connecting component 202 are respectively connected to the guide ball 1 and the fixing component 3, so that the guide ball 1 and the fixing component 3 can rotate relative to each other in all directions.

[0043] like Figure 2 As shown, the fixing member 3 includes a cylinder 301 with one end sealed and the other end open, and a steel strand fixing mechanism disposed on the cylinder 301. The outer diameter of the cylinder 301 is smaller than the diameter of the guide ball 1, and the middle part of the sealed end of the cylinder 301 is connected to the second connecting member 202 of the universal connector 2. The steel strand fixing mechanism includes a steel strip 302, a fixing block 303, and a fixing bolt 304. The fixing block 303 is disposed on the outer wall of the cylinder 301, and both the fixing block 303 and the cylinder wall of the cylinder 301 are provided with through holes through which the steel strip 302 can pass, and the through holes on the two are connected. One end of the steel strip 302 is fixed to the inner wall of the cylinder 301 and at the edge of the through hole provided on the cylinder 301. The other end of the steel strip 302 passes through the through hole provided on the cylinder wall of the cylinder 301 and the fixing block 303 and is located outside the cylinder 301. The steel strip 302 is annular inside the cylinder 301 and has a certain amount of space to accommodate the steel strands. The steel strip 302 can be used to accommodate and fix the steel strands. The inner wall of the annular steel strip 302 is provided with an anti-slip structure, which can be an anti-slip texture or an anti-slip ridge, etc. Since one end of the steel strip 302 is fixed to the inner wall of the cylinder 301 and at the edge of the through hole provided on the cylinder 301, and the inner wall of the annular steel strip 302 is provided with an anti-slip structure, the outer steel strands can be pressed tightly against the steel strip 302 with the anti-slip structure, which can effectively prevent the steel strands from slipping out of the annular steel strip 302. The fixing block 303 is provided with a threaded hole leading to its through hole. A fixing bolt 304 is installed on the threaded hole. Tightening the fixing bolt 304 can fix the steel strip 302 and prevent the steel strip 302 from sliding.

[0044] like Figure 2 As shown, the steel strand fixing mechanism also includes a limiting bolt 305. The outer wall of the cylinder 301 is provided with a threaded hole for installing the limiting bolt 305. The limiting bolt 305 is installed on the outer wall of the cylinder 301. Multiple limiting bolts 305 are arranged along the circumference of the cylinder 301. The part of the steel strip 302 located outside the cylinder 301 is pressed and fixed to the outer wall of the cylinder 301 by the limiting bolt 305. This can prevent the steel strip 302 located outside the cylinder 301 from moving away from the cylinder 301, which would cause problems such as obstruction of wire threading and damage to the corrugated pipe.

[0045] The method of using the quick strand threading device provided in this embodiment includes the following steps:

[0046] S100. Insert one end of the multiple steel strands to be threaded into the annular steel strip 302 inside the cylinder 301. Pull the steel strip 302 located outside the cylinder 301 by external force, so that the annular steel strip 302 inside the cylinder 301 clamps each steel strand. Then tighten the fixing bolts 304, and press and fix the steel strip 302 located outside the cylinder 301 onto the outer wall of the cylinder 301 by the limiting bolts 305.

[0047] S200. Insert the guide ball 1, universal connector 2 and fastener 3 into the bellows.

[0048] S300, with the assistance of the threading machine, performs the threading of multiple steel strands at one time, so that the multiple steel strands are threaded from one end of the corrugated pipe to the other end under the drive of the threading machine and the guidance of the guide ball 1.

[0049] S400. After each steel strand passes through the corrugated pipe to the other end, loosen the fixing bolt 304 and the limit bolt 305 to release each steel strand. This completes the work of threading multiple steel strands.

[0050] Example 2

[0051] A quick-threading device for steel strands, such as Figure 3 As shown, the assembly includes a guide ball 1, a universal connector 2, and a fastener 3. The guide ball 1 can be a solid sphere made of plastic or a hollow sphere made of metal. The guide ball 1 can be a complete spherical structure or a non-complete spherical structure larger than half a sphere. The size of the guide ball 1 can be determined according to the inner diameter of the bellows; the diameter of the guide ball 1 must be smaller than the inner diameter of the bellows, and a notch is reserved at its lower part for connection with the universal connector 2.

[0052] like Figure 4 and Figure 5As shown, the universal connector 2 includes a first connector 201, a second connector 202, an intermediate connector 203, and four short shafts 204. Both the first connector 201 and the second connector 202 are semi-circular ring structures, with outer diameters smaller than the diameter of the guide ball 1. Each end of the first connector 201 and each end of the second connector 202 have a hinge hole on their inner sides. The intermediate connector 203 is a cylindrical structure with four mounting holes evenly distributed along its circumference. The central axes of any two non-adjacent mounting holes are collinear, while the central axes of any two adjacent mounting holes are perpendicular to each other. One short shaft 204 is installed in each of the four mounting holes and is welded to the intermediate connector 203. The intermediate component 203 is hinged to the first connecting component 201 and the second connecting component 202 via four short shafts 204. The four short shafts 204 are respectively hinged in four hinge holes provided on the first connecting component 201 and the second connecting component 202. The first connecting component 201 and the second connecting component 202 are respectively connected to the guide ball 1 and the fixing component 3, so that the guide ball 1 and the fixing component 3 can rotate relative to each other in all directions.

[0053] like Figure 3 , Figure 6 and Figure 7 As shown, the fixing member 3 includes a cylinder 301 with one end sealed and the other end open, and a steel strand fixing mechanism disposed on the cylinder 301. The outer diameter of the cylinder 301 is smaller than the diameter of the guide ball 1. The middle part of the sealed end of the cylinder 301 is connected to the second connecting member 202 of the universal connector 2. An internal thread structure is provided on the inner wall of the open end of the cylinder 301. The steel strand fixing mechanism includes a cylindrical tube 306 and a disc 307. An external thread structure adapted to the internal thread structure of the open end of the cylinder 301 is provided on the outer wall of one end of the cylindrical tube 306. The cylindrical tube 306 and the cylinder 301 are connected by the adapted internal thread structure and external thread structure. A disc 307 is disposed at the threaded end of a circular tube 306. The disc 307 has multiple through holes, and each through hole is fitted with a fixing short tube 308. The wall of the fixing short tube 308 has a threaded through hole leading into the tube, and a fixing bolt 309 is installed in the threaded through hole. The steel strand passes through the through holes of the disc 307 and the fixing short tube 308, and is secured by the tightened fixing bolt 309.

[0054] The method of using the quick strand threading device provided in this embodiment includes the following steps:

[0055] S100. Insert one end of each of the multiple steel strands to be threaded into the through hole of the disc 307 and the fixing short pipe 308, tighten each fixing bolt 309 to fix each steel strand, and then screw the cylinder 301 onto the round pipe fitting 306.

[0056] S200. Insert the guide ball 1, universal connector 2 and fastener 3 into the bellows.

[0057] S300, with the assistance of the threading machine, performs the threading of multiple steel strands at one time, so that the multiple steel strands are threaded from one end of the corrugated pipe to the other end under the drive of the threading machine and the guidance of the guide ball 1.

[0058] S400. After each steel strand passes through the corrugated pipe to the other end, unscrew the cylinder 301 from the round pipe fitting 306, loosen each fixing bolt 309, and release each steel strand. This completes the work of threading multiple steel strands.

[0059] Example 3

[0060] A quick-threading device for steel strands, such as Figure 3 As shown, the assembly includes a guide ball 1, a universal connector 2, and a fastener 3. The guide ball 1 can be a solid sphere made of plastic or a hollow sphere made of metal. The guide ball 1 can be a complete spherical structure or a non-complete spherical structure larger than half a sphere. The size of the guide ball 1 can be determined according to the inner diameter of the bellows; the diameter of the guide ball 1 must be smaller than the inner diameter of the bellows, and a notch is reserved at its lower part for connection with the universal connector 2.

[0061] like Figure 4 and Figure 5 As shown, the universal connector 2 includes a first connector 201, a second connector 202, an intermediate connector 203, and four short shafts 204. Both the first connector 201 and the second connector 202 are semi-circular ring structures, with outer diameters smaller than the diameter of the guide ball 1. Each end of the first connector 201 and each end of the second connector 202 have a hinge hole on their inner sides. The intermediate connector 203 is a cylindrical structure with four mounting holes evenly distributed along its circumference. The central axes of any two non-adjacent mounting holes are collinear, while the central axes of any two adjacent mounting holes are perpendicular to each other. One short shaft 204 is installed in each of the four mounting holes and is welded to the intermediate connector 203. The intermediate component 203 is hinged to the first connecting component 201 and the second connecting component 202 via four short shafts 204. The four short shafts 204 are respectively hinged in four hinge holes provided on the first connecting component 201 and the second connecting component 202. The first connecting component 201 and the second connecting component 202 are respectively connected to the guide ball 1 and the fixing component 3, so that the guide ball 1 and the fixing component 3 can rotate relative to each other in all directions.

[0062] like Figure 3 , Figure 8 and Figure 9 As shown, the fixing member 3 includes a cylinder 301 with one end sealed and the other end open, and a steel strand fixing mechanism disposed on the cylinder 301. The outer diameter of the cylinder 301 is smaller than the diameter of the guide ball 1. The middle part of the sealed end of the cylinder 301 is connected to the second connecting member 202 of the universal connector 2. An internal thread structure is provided on the inner wall of the open end of the cylinder 301. The steel strand fixing mechanism includes a cylindrical tube 306 and a disc 307. An external thread structure adapted to the internal thread structure of the open end of the cylinder 301 is provided on the outer wall of one end of the cylindrical tube 306. The cylindrical tube 306 and the cylinder 301 are connected by the adapted internal thread structure and external thread structure. A disc 307 is disposed at one end of a circular tube 306 that has a threaded structure. A rectangular through hole is provided on the disc 307, and a rectangular fixing frame 311 is provided at this through hole. Two clamping plates 312, one on the left and one on the right, are disposed within the rectangular fixing frame 311. Anti-slip structures are provided on the clamping surfaces of both clamping plates 312. Guide rectangular grooves 313 are provided on both the front and rear frames of the rectangular fixing frame 311. The length direction of the guide rectangular grooves 313 is along the left-right direction, and the length direction of the clamping plates 312 is along the front-back direction. A slider structure 314, adapted to the guide rectangular groove 313, is provided at each end of the length direction of the clamping plates 312. The slider structure 314 is located within the guide rectangular groove 313. The left and right frames of the rectangular fixing frame 311 are provided with threaded through holes, and each threaded through hole is equipped with a clamping bolt 310. Each clamping bolt 310 is used to drive the two clamping plates 312 to move closer to each other to clamp the steel strand passing through the rectangular through hole of the disc 307 and the rectangular fixing frame 311.

[0063] The method of using the quick strand threading device provided in this embodiment includes the following steps:

[0064] S100. Pass one end of the multiple steel strands to be threaded through the rectangular through hole of the disc 307 and between the two clamping plates 312. Tighten the two clamping bolts 310. The two clamping bolts 310 drive the two clamping plates 312 to move closer to each other, pressing the steel strands threaded between the two clamping plates 312. Then screw the cylinder 301 onto the round pipe fitting 306.

[0065] S200. Insert the guide ball 1, universal connector 2 and fastener 3 into the bellows.

[0066] S300, with the assistance of the threading machine, performs the threading of multiple steel strands at one time, so that the multiple steel strands are threaded from one end of the corrugated pipe to the other end under the drive of the threading machine and the guidance of the guide ball 1.

[0067] S400. After each steel strand passes through the corrugated pipe to the other end, unscrew the cylinder 301 from the round pipe fitting 306, loosen each clamping bolt 310, and release each steel strand. This completes the work of threading multiple steel strands.

[0068] In summary, this invention allows for the simultaneous threading of multiple steel strands, significantly improving threading efficiency compared to the prior art which only allows threading one steel strand at a time. Because multiple steel strands are threaded simultaneously, there is no subsequent threading work within the same corrugated pipe, effectively avoiding the problem of obstruction between already threaded and newly threaded steel strands.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rapid stranding device for steel strands, characterized in that, include: Guide ball (1); The fastener (3) has a steel strand fixing mechanism, which can fix multiple steel strands at the same time. Universal connector (2), which connects guide ball (1) and fixing member (3) respectively, so that guide ball (1) and fixing member (3) can rotate relative to each other in all directions; The guide ball (1), the fixing member (3) and the universal connector (2) are arranged in the same direction, and the fixing member (3) and the universal connector (2) are completely located within the projection area of ​​the guide ball (1) in that direction; The fixing member (3) includes a cylinder (301) with one end sealed and the other end open. The outer diameter of the cylinder (301) is smaller than the diameter of the guide ball (1). The steel strand fixing mechanism is set on the cylinder (301). The middle part of the sealed end of the cylinder (301) is connected to the universal connector (2). The steel strand fixing mechanism includes a steel strip (302), a fixing block (303), and a fixing bolt (304). The fixing block (303) is set on the outer wall of the cylinder (301). Both the fixing block (303) and the cylinder wall of the cylinder (301) are provided with through holes through which the steel strip (302) can pass. The through holes on both are connected; one end of the steel strip (302) is fixed to the inner wall of the cylinder (301) and fixed at the edge of the through hole on the cylinder (301); the other end of the steel strip (302) passes through the through holes on the cylinder wall (301) and the fixing block (303) and is located outside the cylinder (301); the steel strip (302) is annular inside the cylinder (301); the inner wall of the annular steel strip (302) is provided with an anti-slip structure; the fixing block (303) is provided with a threaded hole leading to its through hole, and a fixing bolt (304) is installed on the threaded hole; The steel strand fixing mechanism also includes a limiting bolt (305). The outer wall of the cylinder (301) is provided with a threaded hole for installing the limiting bolt (305). The limiting bolt (305) is installed on the outer wall of the cylinder (301). Multiple limiting bolts (305) are provided along the circumference of the cylinder (301). The portion of the steel strip (302) located outside the cylinder (301) is pressed and fixed to the outer wall of the cylinder (301) by the limiting bolt (305).

2. A method of using a rapid stranding device for steel strands, used in the rapid stranding device of claim 1, characterized in that, Includes the following steps: S100. Fix one end of the multiple steel strands that need to be threaded in using the steel strand fixing mechanism of the fixing piece (3). S200. Insert the guide ball (1), universal connector (2) and fastener (3) into the bellows; S300, with the assistance of the threading machine, multiple steel strands are threaded at once, so that the multiple steel strands are threaded from one end of the corrugated pipe to the other end under the drive of the threading machine and the guidance of the guide ball (1). S400. After each steel strand passes through the corrugated pipe to the other end, operate the steel strand fixing mechanism to loosen each steel strand. This completes the threading of multiple steel strands.

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