Strand threading system

Abstract

The application relates to a steel strand threading system which can comprise a threading device; wherein the threading device comprises a traction mechanism, a take-up mechanism and a driving mechanism, the traction mechanism is used for traction of the steel strand, the take-up mechanism is used for take-up of the steel strand, and the driving mechanism is used for power supply of the traction mechanism and the take-up mechanism. The application has the advantages of simple and practical structure, reliability, low cost, high cost performance, and the like, and can realize the pulling and threading actions of the steel strand. Since a driving motor is used, remote control can be realized, manpower is saved, the steel strand is threaded through by the power of the machine, the labor intensity is greatly reduced, the steel strands are not easy to be entangled with each other, the whole threading is realized, the safety of prestress tensioning construction is ensured, and the occurrence of accidents of the steel strand in the prestress steel strand tensioning process is reduced.

Description

Technical Field

[0001] This application relates to the field of mechanical manufacturing technology, specifically a steel strand threading system. Background Technology

[0002] With social progress and continuous economic development, construction workers have discovered that when threading individual steel strands through the ducts of beams, occasional instances occur during prestressing tensioning where the jacks fail to tension synchronously, resulting in qualified prestressing but broken individual steel strands. Research revealed that this is because the complex and variable duct paths of beams, coupled with the method of threading individual steel strands, lead to entanglement. This entanglement causes uneven stress distribution during prestressing tensioning, with some strands experiencing excessive stress while others experience insufficient stress, thus affecting the overall prestressing performance of the bundle. Utility Model Content

[0003] This application provides a steel strand threading system to solve the problem of uneven stress caused by the entanglement of steel strands during threading in the prior art.

[0004] To achieve the above objectives, the first technical solution provided in this application is: to provide a steel strand threading system, including a threading device; wherein the threading device includes:

[0005] Traction mechanism, used for traction of steel strands;

[0006] A take-up mechanism is used to take up the steel strand;

[0007] A drive mechanism is used to provide power to the traction mechanism and the take-up mechanism.

[0008] Furthermore, the traction mechanism includes:

[0009] A traction line, comprising an interconnected traction rope and a gripper, is used to pull the steel strand; wherein the gripper is disposed at the end of the traction rope;

[0010] A pulling member is used to provide power to the pulling rope; the pulling rope is partially inserted into the pulling member and extends further to the take-up mechanism, so that the pulling member can wind the traction rope and the steel wire onto the take-up mechanism.

[0011] Furthermore, the pulling member includes a first sprocket, and the driving mechanism includes a drive motor, a second sprocket and a second chain connected to each other; the first sprocket and the second sprocket are connected by the first chain; wherein, the drive motor drives the second sprocket to rotate, thereby causing the first chain to rotate along the first sprocket and the second sprocket.

[0012] Furthermore, the take-up mechanism includes a third sprocket and an auxiliary sprocket. The third sprocket includes an outer ring tooth and an inner ring tooth coaxially arranged. The inner ring tooth is located at the center of the third sprocket. The outer ring tooth and the second sprocket are connected by a second chain. The inner ring tooth and the auxiliary sprocket are connected by a third chain. The drive motor drives the second sprocket to rotate, causing the second chain to rotate along the second sprocket and the outer ring tooth. The inner ring tooth rotates synchronously with the outer ring tooth, thereby driving the third chain to rotate along the inner ring tooth and the auxiliary sprocket. A rod is mounted on the auxiliary sprocket to guide the steel strand.

[0013] Furthermore, the threading device also includes:

[0014] The clamping mechanism, in conjunction with the take-up mechanism, is used to clamp the steel strand wound on the outer ring teeth.

[0015] Furthermore, the steel strand threading system also includes:

[0016] A wire threading mechanism and a support mechanism disposed on the wire threading mechanism, wherein the support mechanism is used to support the steel strand threading system;

[0017] Mounting frame, the threading device is installed inside the mounting frame; the support mechanism is installed on one side of the mounting frame away from the threading mechanism.

[0018] Furthermore, the threading mechanism has:

[0019] Mounting holes are used to fix the support mechanism;

[0020] A through hole is provided, through which a bundle of strands formed by a plurality of the steel strands is configured to pass; wherein, the gripping portion of the traction mechanism extends into the through hole and is connected to the bundle of strands.

[0021] Furthermore, the support mechanism is driven by a lead screw to move back and forth along the threading direction of the steel strand.

[0022] Furthermore, the mechanism to be threaded is a beam used during construction.

[0023] This application also provides an automatic control system, including:

[0024] A steel strand threading system, wherein the steel strand threading system is any one of the steel strand threading systems described above;

[0025] A control module, connected to the steel strand threading system, is used to control the operation of the steel strand threading system.

[0026] Compared with the prior art, the beneficial effects of this application are as follows:

[0027] The steel strand threading system provided in this application may include: a threading device; wherein the threading device includes: a traction mechanism, a take-up mechanism, and a drive mechanism. The traction mechanism is used to pull the steel strand; the take-up mechanism is used to take up the steel strand; and the drive mechanism is used to provide power to the traction mechanism and the take-up mechanism. This application features a simple, practical, and reliable structure, low cost, and high cost-effectiveness, enabling the pulling and threading of steel strands. Due to the use of a drive motor, remote control is possible, saving manpower. Threading the steel strands using machine power greatly reduces labor intensity, and the steel strands are less prone to tangling, achieving threading of the entire bundle. This ensures the safety of prestressed tensioning construction and reduces the occurrence of steel strand breakage accidents during prestressed steel strand tensioning. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only for the purpose of more clearly illustrating the technical solutions in the embodiments of this application or the prior art. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the steel strand threading system of this application;

[0030] Figure 2 This is a schematic front view of the threading device of this application;

[0031] Figure 3 This is a top view of the threading device of this application.

[0032] Figure 4 This is a structural block diagram of the automatic control system of this application;

[0033] Explanation of icon numbers:

[0034] 300. Steel strand threading system; 200. Threading mechanism; 201. Mounting hole; 202. Through hole; 100. Threading device; 20. Support mechanism; 10. Traction mechanism; 1. Traction line; 11. Traction rope; 12. Hook; 3. Traction component; 31. First sprocket; 32. First chain; 4. Drive mechanism; 41. Drive motor; 42. Second sprocket; 5. Take-up mechanism; 50. Third sprocket; 55. Second chain; 51. Outer ring tooth; 52. Inner ring tooth; 53. Auxiliary sprocket; 54. Third chain; 6. Clamping mechanism; 7. Steel strand; 70. Strand bundle; 8. Mounting frame; 400. Automatic control system; 401. Control module; 4011. Processor; 4012. Memory. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first" and "second" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications will also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] This application specifically relates to a whole-bundle steel strand threading system, which solves the problem of uneven stress during prestressing tension caused by the entanglement of individual steel strands during threading. Traditional single-strand threading, by threading individual steel strands one by one, leads to entanglement and uneven stress during prestressing tensioning. This can pose safety hazards or even break the entangled strands, causing damage and losses to the beam. This application focuses on whole-bundle threading, pulling the entire bundle of steel strands from the duct, thus avoiding the entanglement problem, ensuring the safety of prestressing tensioning construction, and reducing the occurrence of steel strand breakage accidents during prestressing tensioning.

[0039] To address the aforementioned problems, this application provides a steel strand threading system.

[0040] Please see Figures 1 to 4 , Figure 1 This is a schematic diagram of the overall structure of the steel strand threading system of this application; Figure 2 This is a schematic front view of the threading device of this application; Figure 3 This is a top view of the threading device of this application. Figure 4 This is a block diagram of the automatic control system of this application.

[0041] The steel strand threading system 300 provided in this application includes a threading device 100; wherein the threading device 100 includes: a traction mechanism 10, a take-up mechanism 5, and a drive mechanism 4. The traction mechanism 10 is used to pull the steel strand 7; the take-up mechanism 5 is used to take up the steel strand 7; and the drive mechanism 4 is used to provide power to the traction mechanism 10 and the take-up mechanism 5. In one embodiment of this application, the steel strand 7 is used as an example for illustration. In other embodiments, other rigid wire materials may also be used, and this application does not limit this.

[0042] In one embodiment, the traction mechanism 10 includes a traction line 1 and a pulling member. The traction line 1 includes a traction rope 11 and a gripper connected to each other. The traction rope 11 and the gripper are used to pull the steel strand 7. The gripper is disposed at the end of the traction rope. Specifically, the gripper can be a puller or a gripper, etc.

[0043] The pulling member is used to provide power to the pulling rope; the pulling rope is partially inserted into the pulling member and extends further to the take-up mechanism 5, so that the pulling member can wind the traction rope 11 and the steel wire onto the take-up mechanism 5. The pulling member can specifically be a motor, cylinder, mechanical shaft, lead screw, etc., which provides power, and this application does not limit it.

[0044] In one embodiment, the pulling member includes a first sprocket 31, and the driving mechanism 4 includes a drive motor 41, a second sprocket 42 and a second chain 55 connected to each other; the first sprocket 31 and the second sprocket 42 are connected by the first chain 32; wherein, the drive motor 41 drives the second sprocket 42 to rotate, thereby causing the first chain 32 to rotate along the first sprocket 31 and the second sprocket 42.

[0045] In one embodiment, the take-up mechanism 5 includes a third sprocket 50 and an auxiliary sprocket 53. The third sprocket 50 includes an outer ring tooth 51 and an inner ring tooth 52 coaxially arranged. The inner ring tooth 52 is located at the center of the third sprocket 50. The outer ring tooth 51 and the second sprocket 42 are connected by a second chain 55, so that the second chain 55 transmits power between the outer ring tooth 51 and the second sprocket 42. The inner ring tooth 52 and the auxiliary sprocket 53 are connected by a third chain 54, so that the third chain 54 transmits power between the inner ring tooth 52 and the auxiliary sprocket 53. It can be understood that since the outer ring tooth 51 and the inner ring tooth 52 are coaxially arranged, when the outer ring tooth 51 is driven to rotate, the inner ring tooth 52 will also rotate synchronously with the overall rotation of the third sprocket 50.

[0046] The drive motor 41 drives the second sprocket 42 to rotate. Since the second sprocket 42 is connected to the outer ring tooth 51 via the second chain 55, the second sprocket 42 drives the second chain 55 to rotate, and the second chain 55 further drives the outer ring tooth 51 to rotate. At this time, the inner ring tooth 52, which is coaxial with the outer ring tooth 51, rotates synchronously with the rotation of the outer ring tooth 51. Since the inner ring tooth 52 and the auxiliary sprocket 53 are connected via the third chain 54, the inner ring tooth 52 drives the third chain 54 to rotate, and further drives the auxiliary sprocket 53 to rotate via the third chain 54. A rod is mounted on the auxiliary sprocket 53 to guide the steel strand 7. In short, the rotation sequence of the sprocket and chain is as follows: the rotation of the second sprocket 42 drives the outer ring tooth 51 to rotate (the inner ring tooth 52 rotates synchronously with the outer ring tooth 51), which in turn causes the auxiliary sprocket 53 to rotate.

[0047] In one embodiment, the threading device 100 further includes a pressing mechanism 6, which works in conjunction with the take-up mechanism 5 to take up the wire, specifically for pressing the steel strand 7 wound on the outer ring teeth 51 during the take-up process.

[0048] In one embodiment, the steel strand threading system 300 further includes: a threading mechanism 200, a support mechanism 20 disposed on the threading mechanism 200, and a mounting frame 8. The support mechanism 20 is used to support the steel strand threading system 300; the threading device 100 is installed in the mounting frame 8; and the support mechanism 20 is installed on the side of the mounting frame 8 away from the threading mechanism 200.

[0049] In one embodiment, the threading mechanism 200 has a mounting hole 201 and a through hole 202. The mounting hole 201 is used to fix the support mechanism 20; the mounting hole 201 can be a through hole or a blind hole. The support mechanism 20 can be fixed to the side wall of the threading mechanism 200 by means of screws, nuts, threads, etc. The stranded wire bundle 70 formed by multiple steel strands 7 is configured to pass through the through hole 202; wherein, the gripping part of the traction mechanism 10 extends into the through hole 202 and is connected to the stranded wire bundle 70, so that the traction mechanism 10, specifically the traction rope 11, can generate a traction force on the stranded wire bundle 70.

[0050] Specifically, the wire-threading mechanism 200 is a beam used during construction, which can be a T-beam or a beam of other shapes; this application does not impose any restrictions on this.

[0051] In one embodiment, the support mechanism 20 is driven by a lead screw to move back and forth along the threading direction of the steel strand 7. For example, the lead screw can achieve linear motion, which can push the support mechanism 20 to move closer to the threading mechanism 200 when it grabs the strand bundle 70, and then move away from the threading mechanism 200 when it winds the strand bundle 70 around the take-up mechanism 5.

[0052] The workflow and working principle of this application are as follows:

[0053] The traction line 1 is equipped with a traction rope 11 and a hook 12 for traction of the steel strand. The support mechanism 20 is used to support the entire threading device and prevent it from being pulled away during traction. The traction mechanism 3 provides power for traction of the steel strand. The drive mechanism 4 provides power for traction and winding. The winding mechanism 5 is used for winding. The clamping device 6 is used to clamp the traction steel strand wound on the winding mechanism 5 to prevent it from jumping out.

[0054] The entire winding device movement process is as follows: The support mechanism 20 supports the end face of the winding mechanism 200. Driven by the drive mechanism 4, power is provided to the traction mechanism 3 through the sprocket and gear transmission. The hook on the traction line 1 is inserted into the channel of the winding mechanism 200, and the other end extends out. The hook 12 connects to the entire bundle of steel strands 70. Under the traction of the traction mechanism 3, the steel strands 7 are wound around the take-up mechanism 5. The entire bundle of steel strands 70 is pulled from the other end of the channel of the winding mechanism 200 to the end of the winding device 100, realizing the pulling action of the strands 70, thereby realizing the entire bundle of steel strands 70 passing through the channel of the winding mechanism 200, preventing the steel strands 7 from tangling together. (See schematic diagram below.) Figures 1-3 As shown. Then proceed to the next step of prestressing tensioning.

[0055] Working principle analysis: The main power source for the threading device 100 is the drive mechanism 4. Driven by the drive motor of the drive mechanism 4, the traction mechanism 3 pulls the steel strand 7, giving the traction mechanism 3 traction power, which in turn pulls the steel strand 7 to extend and retract. The retracted steel strand 7 is then taken in or released through the take-up mechanism 5, also driven by a sprocket and chain. The power comes from the drive mechanism 4. The support mechanism 200, driven by a screw, can extend and support the threading mechanism 200, serving a fixing function. The traction line 1 has a hook 12, and the traction line 1 is connected to the entire bundle of steel strands 70. Furthermore, the traction line 1 can be wound around the take-up mechanism 5 for storage.

[0056] The steel strand threading system 300 provided in this application may include: a threading device 100; wherein the threading device 100 includes: a traction mechanism 10, a take-up mechanism 5, and a drive mechanism 4. The traction mechanism 10 is used to pull the steel strand 7; the take-up mechanism 5 is used to take up the steel strand 7; and the drive mechanism 4 is used to provide power to the traction mechanism 10 and the take-up mechanism 5. This application has a simple, practical, and reliable structure, low cost, and high cost-effectiveness, and can realize the pulling and threading actions of the steel strand 7. Due to the use of a drive motor 41, remote control is possible, saving manpower. Threading the steel strand 7 by machine greatly reduces labor intensity, and the steel strand 7 is less likely to tangle, achieving threading of the entire bundle, thus ensuring the safety of prestressed tensioning construction and reducing the occurrence of accidents involving broken steel strand 7 during prestressed steel strand tensioning.

[0057] To address the aforementioned problems, this application may also provide an automatic control system 400.

[0058] like Figure 4 As shown, the automatic control system 400 includes a steel strand threading system 300 and a control module 401. The steel strand threading system 300 is any of the steel strand threading systems mentioned above, and will not be described in detail here.

[0059] The control module 401 is electrically connected to the steel strand threading system 300, and performs density detection on the liquid through the control module 401. The control module 401 may also contain a processor 4011 and a memory 4012. The processor 4011 is used to control the operation of the automatic control system 400; the processor 4011 can also be called a CPU (Central Processing Unit). The processor 4011 may be an integrated circuit chip with signal processing capabilities. The processor 4011 can also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The general-purpose processor can be a microprocessor or any conventional processor, or it can be a PLC or industrial computer control, etc.

[0060] Memory 4012 is used to store computer programs and may be RAM, ROM, or other types of storage devices. Specifically, memory 4012 may include one or more computer-readable storage media, which may be non-transitory. Memory 4012 may also include high-speed random access memory 4012 and non-volatile memory 4012, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in memory 4012 is used to store at least one line of program code.

[0061] All technologies not described in detail in this application are prior art.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steel strand threading system, characterized in that, Including a threading device; The threading device includes: Traction mechanism, used for traction of steel strands; A take-up mechanism is used to take up the steel strand; A drive mechanism is used to provide power to the traction mechanism and the take-up mechanism.

2. The steel strand threading system according to claim 1, characterized in that, The traction mechanism includes: A traction line, comprising an interconnected traction rope and a gripper, is used to pull the steel strand; wherein the gripper is disposed at the end of the traction rope; A pulling member is used to provide power to the traction rope; the traction rope is partially inserted into the pulling member and extends further to the take-up mechanism, so that the pulling member can wind the traction rope and the steel strand onto the take-up mechanism.

3. A steel strand threading system according to claim 2, characterized in that, The pulling member includes a first sprocket, and the driving mechanism includes a drive motor, a second sprocket and a second chain connected to each other; the first sprocket and the second sprocket are connected by the first chain; wherein, the drive motor drives the second sprocket to rotate, thereby causing the first chain to rotate along the first sprocket and the second sprocket.

4. A steel strand threading system according to claim 3, characterized in that, The take-up mechanism includes a third sprocket and an auxiliary sprocket. The third sprocket includes an outer ring tooth and an inner ring tooth coaxially arranged. The inner ring tooth is located at the center of the third sprocket. The outer ring tooth and the second sprocket are connected by a second chain. The inner ring tooth and the auxiliary sprocket are connected by a third chain. The drive motor drives the second sprocket to rotate, causing the second chain to rotate along the second sprocket and the outer ring tooth. The inner ring tooth rotates synchronously with the outer ring tooth, thereby driving the third chain to rotate along the inner ring tooth and the auxiliary sprocket. A rod is mounted on the auxiliary sprocket to guide the steel strand.

5. A steel strand threading system according to claim 4, characterized in that, The threading device further includes: The clamping mechanism, in conjunction with the take-up mechanism, is used to clamp the steel strand wound on the outer ring teeth.

6. A steel strand threading system according to any one of claims 1 to 5, characterized in that, The steel strand threading system also includes: A wire threading mechanism and a support mechanism disposed on the wire threading mechanism, wherein the support mechanism is used to support the steel strand threading system; Mounting frame, the threading device is installed inside the mounting frame; the support mechanism is installed on one side of the mounting frame away from the threading mechanism.

7. A steel strand threading system according to claim 6, characterized in that, The threading mechanism has the following features: Mounting holes are used to fix the support mechanism; A through hole is provided, through which a bundle of strands formed by a plurality of the steel strands is configured to pass; wherein, the gripping portion of the traction mechanism extends into the through hole and is connected to the bundle of strands.

8. A steel strand threading system according to claim 6, characterized in that, The support mechanism is driven by a lead screw to move back and forth along the direction in which the steel strand is laid.

9. A steel strand threading system according to claim 6, characterized in that, The mechanism to be threaded is a beam used during construction.

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