Steel strand integral pulling machine and pulling method

Abstract

The invention relates to a steel strand integral strand pulling machine and a strand pulling method, and belongs to the technical field of strand pulling machines, the steel strand integral strand pulling machine comprises a C-shaped fixing support and a storage battery used for providing electric energy, the bottom of the storage battery is fixedly installed at the top of the C-shaped fixing support, and a T-shaped sliding groove and two grooves are formed in one side of the interior of the C-shaped fixing support; a T-shaped sliding groove is formed in each groove, a self-cleaning type conveying assembly is installed in the T-shaped sliding groove, a buffering type guide assembly is fixedly installed in each groove, a connecting plate is fixedly connected between the self-cleaning type conveying assembly and the two buffering type guide assemblies, and a steel strand harness body is arranged in the self-cleaning type conveying assembly and the buffering type guide assemblies. By means of the self-cleaning type conveying assembly, impurities of the conveying crawler belt can be removed, conveying continuity and stability are guaranteed, kinetic energy is recycled through the generator to supply power, the energy utilization rate is increased, size fluctuation and position deviation of the steel strand bundle are effectively compensated through the buffering type guide assembly, deviation of a steel strand bundle body is prevented, and abrasion is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of threading machines, in particular to a steel strand whole threading machine and a threading method. BACKGROUND

[0002] In the field of bridge prestressed construction, steel strand threading is a key link in the post-tensioning prestressed process, and its efficiency and quality directly affect the overall progress and structural safety of the project. The traditional threading operation relies on manual or simple mechanical assistance, which has the problems of high labor intensity, low efficiency, and difficult to guarantee threading accuracy. Although the threading equipment in the prior art has achieved mechanization to a certain extent, it still has the defect of insufficient adaptability, and cannot be flexibly adjusted to adapt to steel strand bundles of different diameters and specifications. In addition, during the conveying process, the driving components are easily contaminated with oil stains, dust and other impurities, which reduces the friction between the driving components and the steel strand, causing slipping, weak conveying or even interruption, seriously affecting the continuity and reliability of the threading. In addition, the steel strand is prone to deflection and shaking during long-distance pushing, and lacks effective buffering and deviation correction mechanisms, which not only aggravates equipment wear and tear, but also may scratch the steel strand itself, affecting its mechanical properties and durability. Therefore, there is an urgent need for a new type of threading machine with automatic cleaning, self-adaptive clamping, efficient buffering and guiding, and flexible installation method to solve the technical problems of low conveying efficiency, poor stability, limited application range and other technical problems in the prior art, and to meet the high-efficiency, high-precision and high-reliability operation requirements of modern bridge construction. SUMMARY

[0003] To overcome the technical defects of the prior art, the present application provides a steel strand whole threading machine and a threading method, which has the effects of simple structure, convenient operation and high automation.

[0004] The technical solution adopted by the present application is: including C-shaped fixed support and battery for providing electric energy, the bottom of the battery is fixedly installed on the top of the C-shaped fixed support, the inside of the C-shaped fixed support is provided with a T-shaped sliding groove and two grooves, the inside of the T-shaped sliding groove is provided with a self-cleaning conveying assembly, the inside of each groove is fixedly provided with a buffer guiding assembly, the self-cleaning conveying assembly and the two buffer guiding assemblies are fixedly connected with a connecting plate, the inside of the self-cleaning conveying assembly and the buffer guiding assembly is provided with a steel strand bundle main body, the rear side of the C-shaped fixed support is fixedly provided with a back plate provided with mounting holes or the bottom of the C-shaped fixed support is fixedly provided with a supporting table.

[0005] Preferably, in order to improve the conveying efficiency and automation degree of the steel strand whole threading machine, the self-cleaning conveying assembly comprises a T-shaped threaded block and an L-shaped mounting rack, the T-shaped threaded block is arranged in the T-shaped chute, the L-shaped mounting rack is fixed on the T-shaped threaded block, a slot is formed on one side of the L-shaped mounting rack, a plug is slidably connected in the slot, a cleaning brush is fixed on the bottom of the plug, a second motor is fixedly installed on one side of the L-shaped mounting rack, a rotating shaft one is installed on the output end of the second motor, and a conveying track for conveying the steel strand bundle body is arranged on the outer side of the rotating shaft one and in meshing connection with the cleaning brush.

[0006] Preferably, in order to flexibly adjust the relative distance between the two conveying tracks, a first motor for driving is fixedly installed on the top of the C-shaped fixed support, a bidirectional screw rod with opposite threads at both ends is installed on the output shaft of the first motor, and the other end of the bidirectional screw rod is rotatably installed in the bottom of the T-shaped chute through the C-shaped fixed support.

[0007] Preferably, in order to generate electricity by rotating the conveying track to drive the generator, a generator is fixedly installed on one side of the L-shaped mounting rack, a rotating shaft two is installed on the other side of the generator, and the outer side of the rotating shaft two is in meshing connection with the inner side of the conveying track.

[0008] Preferably, in order to improve the stability of the steel strand bundle body during conveying, the buffer type guiding assembly comprises a sliding block and a fixed block, the sliding block is slidably arranged in the groove, one side of the sliding block is connected with one side of the L-shaped mounting rack through the connecting plate, the fixed block is fixedly installed on the sliding block, a limiting groove is arranged in the fixed block, a limiting block is slidably arranged in the limiting groove, and a spring is fixedly connected between the limiting block and the top of the limiting groove.

[0009] Preferably, in order to guide the sliding block and improve the stability of the sliding block during movement, a guide rod is fixedly arranged in the groove, and the sliding block is slidably arranged on the outer side of the guide rod.

[0010] Preferably, in order to better guide the steel strand bundle body and avoid damage to it during conveying, effectively prolonging the service life of the steel strand bundle body, one side of each of the two limiting blocks is fixedly provided with a fixed plate, and a supporting guide roller is rotatably installed between the two fixed plates.

[0011] Preferably, in order to improve the strength and wear resistance of the steel strand bundle body, the steel strand bundle body comprises a steel core and steel wires, the steel wires are wound around the outer side of the steel core, and the steel core and the steel wires are both made of high-strength alloy material.

[0012] Preferably, in order to reduce the frictional resistance of the conveying track and the supporting guide roller in the conveying process, improve the conveying efficiency of the steel strand bundle main body, the outer side of the conveying track and the supporting guide roller is coated with a carbon nanotube reinforced polymer coating.

[0013] Preferably, in order to efficiently and accurately complete the threading operation of the steel strand bundle main body, the present application comprises the following steps: S1: placing the steel strand bundle main body between the self-cleaning conveying assembly and the two buffer type guiding assemblies, and synchronously moving the self-cleaning conveying assembly and the buffer type guiding assembly to clamp the steel strand bundle main body; S2: conveying the steel strand bundle main body along a predetermined path, moving the steel strand bundle main body by the conveying track, and cleaning the conveying track by the cleaning brush to avoid impurities on the conveying track affecting the conveying of the steel strand bundle main body; S3: in the moving process of the steel strand bundle main body, the limiting block slides in the limiting groove through the elastic action of the spring, thereby driving the supporting guide roller to guide the steel strand bundle main body, and avoiding the deviation of the steel strand bundle main body in the moving process.

[0014] The beneficial effects of the present application are: 1. The self-cleaning conveying assembly of the present application realizes the effect of automatic conveying of the steel strand bundle main body, and the cleaning brush can clean the conveying track, avoiding impurities on the conveying track affecting the conveying of the steel strand bundle main body, improving the conveying efficiency and stability of the steel strand overall threading machine, and the relative distance between the two conveying tracks can be flexibly adjusted by the first motor driving bidirectional screw, thereby adapting to the conveying needs of steel strand bundle main bodies of different specifications, and improving the application range and flexibility of the steel strand overall threading machine.

[0015] 2. The buffer type guiding assembly of the present application can guide the steel strand bundle main body and avoid deviation in the conveying process, further improving the conveying precision and stability of the steel strand overall threading machine, and the elastic action of the spring can also buffer the impact force generated during the conveying process of the steel strand bundle main body, protecting the steel strand bundle main body from damage and improving the service life of the steel strand bundle main body. In addition, through the design of the fixed plate and the supporting guide roller, the steel strand bundle main body can always maintain a stable state during the conveying process, avoiding conveying problems caused by shaking or deviation.

[0016] 3. The steel core and steel wire made of high-strength alloy material and combined with the carbon nanotube reinforced polymer coating significantly improve the strength and wear resistance of the steel strand bundle main body, so that the steel strand bundle main body can withstand greater tension and friction force during the conveying process, and the frictional resistance of the conveying track and the supporting guide roller in the conveying process is reduced, further improving the conveying efficiency and stability of the steel strand overall threading machine.

[0017] 4、The bridge construction machine can flexibly select to install a back plate or a support table according to actual construction requirements of the bridge, so that the bridge construction machine has a wider application range and higher practicability in actual application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of an embodiment of the present application; Figure 2 It is a bottom view of a structural schematic view of an embodiment of the present application; Figure 3 It is a structural schematic view of a C-shaped fixing support of the present application; Figure 4 It is a schematic view of connection of a self-cleaning conveying assembly, a buffer type guiding assembly and a connecting plate of the present application; Figure 5 It is a structural exploded view of the self-cleaning conveying assembly of the present application; Figure 6 It is a structural sectional view of the buffer type guiding assembly of the present application; Figure 7 It is a structural schematic view of a steel strand bundle main body of the present application.

[0019] Explanation of reference signs: in the drawing: 1, C-shaped fixing support; 2, self-cleaning conveying assembly; 201, bidirectional screw rod; 202, first motor; 203, T-shaped threaded block; 204, L-shaped mounting rack; 205, second motor; 206, rotating shaft one; 207, conveying track; 208, generator; 209, rotating shaft two; 210, insertion groove; 211, insertion block; 212, cleaning brush; 3, buffer type guiding assembly; 301, guiding rod; 302, sliding block; 303, fixed block; 304, limiting groove; 305, spring; 306, limiting block; 307, fixed plate; 308, supporting guide roller; 4, connecting plate; 5, storage battery; 6, steel strand bundle main body; 601, steel core; 602, steel wire; 7, support table; 8, T-shaped sliding groove; 9, recess; 10, back plate. DETAILED DESCRIPTION

[0020] The present application will be further described below in combination with the drawings: As Figures 1-7As shown, the embodiment provides a steel strand overall threading machine and threading method, which comprises a C-shaped fixed support 1 and a storage battery 5 for providing electric energy, the bottom of the storage battery 5 is fixedly installed at the top of the C-shaped fixed support 1, and the storage battery 5 is electrically connected with the self-cleaning conveying assembly 2 to provide the required electric energy for the motor and the generator 208 in the self-cleaning conveying assembly 2, a T-shaped sliding groove 8 and two grooves 9 are arranged on one side of the inside of the C-shaped fixed support 1, the self-cleaning conveying assembly 2 is installed in the T-shaped sliding groove 8, the T-shaped sliding groove 8 has a limiting effect on the self-cleaning conveying assembly 2, and the inside of each groove 9 is fixedly installed with a buffer type guide assembly 3, and the self-cleaning conveying assembly 2 and the two buffer type guide assemblies 3 are fixedly connected with a connecting plate 4, and the self-cleaning conveying assembly 2 and the buffer type guide assembly 3 are internally provided with a steel strand bundle main body 6, and a back plate 10 provided with mounting holes is fixedly installed at the rear side of the C-shaped fixed support 1 or a supporting table 7 is fixedly installed at the bottom of the C-shaped fixed support 1, which can be flexibly selected according to the actual construction requirements of the bridge, and the use effect of the threading machine is improved.

[0021] When the construction environment of the bridge requires higher stability and supporting force, the operator can select to fix the back plate 10 at the rear side of the C-shaped fixed support 1, connect with other structures through the mounting holes on the back plate 10, ensure that the threading machine does not shake or deviate during use, thereby improving the precision and safety of the threading operation, before the threading operation starts, the operator needs to ensure that the steel strand bundle main body 6 has been correctly placed between the self-cleaning conveying assembly 2 and the two buffer type guide assemblies 3, and adjust the self-cleaning conveying assembly 2 according to the diameter of the steel strand bundle main body 6, under the action of the connecting plate 4, the buffer type guide assembly 3 can move synchronously with the self-cleaning conveying assembly 2 to adapt to the conveying requirements of steel strand bundle main bodies 6 of different diameters and specifications, and then the self-cleaning conveying assembly 2 can be used to convey the steel strand bundle main body 6 along the predetermined path, and the buffer type guide assembly 3 can effectively guide and buffer the steel strand bundle main body 6 during movement, avoiding the deviation and shaking of the steel strand bundle main body 6 during long-distance pushing, further improving the continuity and reliability of the threading, significantly improving the efficiency, stability and application range of the threading operation, and is an indispensable efficient tool in modern bridge construction.

[0022] When the construction space of the bridge is limited, or the threading machine needs to have better mobility and flexibility, the supporting table 7 can be selected to be fixedly installed at the bottom of the C-shaped fixed support 1, and the threading machine is supported by the supporting table 7, so that the threading machine can be flexibly moved and adjusted according to the construction needs to adapt to different construction environments and conditions.

[0023] As a technical optimization scheme of the present application, specifically as Figure 4As shown, the self-cleaning conveying assembly 2 comprises a T-shaped threaded block 203 and an L-shaped mounting bracket 204, the T-shaped threaded block 203 is arranged inside the T-shaped chute 8, the L-shaped mounting bracket 204 is fixed on the T-shaped threaded block 203, a slot 210 is formed on one side of the outer side of the L-shaped mounting bracket 204, an insertion block 211 is slidably connected in the slot 210, a cleaning brush 212 is fixed on the bottom of the insertion block 211, which facilitates disassembly and cleaning of the cleaning brush 212, the cleaning brush 212 is made of a material with good wear resistance to improve the service life of the cleaning brush 212, a second motor 205 is fixedly installed on one side of the inner side of the L-shaped mounting bracket 204, a rotating shaft one 206 is installed on the output end of the second motor 205, a conveying track 207 for conveying the steel strand bundle body 6 is meshingly arranged on the outer side of the rotating shaft one 206, and the outer side of the conveying track 207 is in contact with the cleaning brush 212, the arrangement of the conveying track 207 not only realizes stable conveying of the steel strand bundle body 6, but also effectively removes impurities on the conveying track 207 through contact with the cleaning brush 212, avoiding problems such as slipping and weak conveying caused by impurities, ensuring the continuity and reliability of conveying, a first motor 202 for driving is fixedly installed on the top of the C-shaped fixed support 1, a bidirectional screw 201 with opposite threads at both ends is installed on the output shaft of the first motor 202, the other end of the bidirectional screw 201 penetrates through the C-shaped fixed support 1 and is rotatably installed at the bottom of the T-shaped chute 8, the T-shaped threaded block 203 is threadedly connected with the bidirectional screw 201, a generator 208 is fixedly installed on one side of the inner side of the L-shaped mounting bracket 204, a rotating shaft two 209 is installed on the other side of the generator 208, and the outer side of the rotating shaft two 209 is meshingly arranged with the inner side of the conveying track 207.

[0024] In use, the operator first starts the first motor 202, the output shaft of the first motor 202 drives the bidirectional screw 201 to rotate, since the threads at both ends of the bidirectional screw 201 are oppositely arranged, and the T-shaped threaded block 203 is threadedly connected with the bidirectional screw 201, therefore, in the process of rotating the bidirectional screw 201, the two T-shaped threaded blocks 203 can be driven to move relatively or in opposite directions, so as to flexibly adjust the relative distance between the two conveying tracks 207, to adapt to the conveying needs of steel strand bundles of different specifications, thereby improving the application range and flexibility of the steel strand overall threading machine, then the second motor 205 is started, the output end of the second motor 205 drives the rotating shaft one 206 to rotate, the conveying track 207 meshingly arranged on the outer side of the rotating shaft one 206 is driven to rotate, thereby realizing the conveying operation of the steel strand bundle main body 6, in the process of rotating the conveying track 207, the cleaning brush 212 is in contact with the outer side of the conveying track 207, which can clean the impurities such as oil stains and dust on the conveying track 207, avoiding the influence of impurities on the conveying of the steel strand bundle main body 6 on the conveying track 207, improving the conveying efficiency and stability of the steel strand overall threading machine, at the same time, the rotating shaft two 209 on the other side of the generator 208 is meshingly arranged with the inner side of the conveying track 207, the conveying track 207 can drive the generator 208 to generate electricity in the process of rotating, providing the required electric energy for other electrical elements in the threading machine, realizing the recycling of energy, and improving the energy-saving effect of the threading machine.

[0025] As a technical optimization scheme of the present application, as shown in Figure 5 The buffer type guide assembly 3 includes a sliding block 302 and a fixed block 303, the sliding block 302 is slidingly arranged inside the groove 9, one side of the sliding block 302 is connected with one side of the L-shaped mounting bracket 204 through the connecting plate 4, the fixed block 303 is fixedly installed on the sliding block 302, a limiting groove 304 is arranged inside the fixed block 303, a limiting block 306 is slidingly arranged inside the limiting groove 304, a spring 305 is fixedly connected between the limiting block 306 and the top of the limiting groove 304, a guide rod 301 is fixedly arranged inside the groove 9, the sliding block 302 is slidingly arranged outside the guide rod 301, the guide rod 301 has a limiting and guiding effect on the sliding block 302, improving the stability of the sliding block 302 in the process of moving up and down inside the groove 9, the two limiting blocks 306 are fixedly provided with a fixed plate 307 on one side, a supporting guide roller 308 is rotatably installed between the two fixed plates 307, the conveying track 207 and the supporting guide roller 308 are coated with a carbon nanotube reinforced polymer coating.

[0026] In use, the sliding block 302 can move with the movement of the L-shaped mounting frame 204 under the action of the connecting plate 4, so that the position of the fixed block 303 can be flexibly adjusted to adapt to the conveying needs of steel strand bundle bodies 6 of different diameters, and the versatility and practicality of the steel strand overall threading machine are improved. During the conveying of the steel strand bundle body 6, the limiting block 306 reciprocally slides in the limiting groove 304 through the elastic action of the spring 305, thereby driving the supporting guide roller 308 to effectively guide and support the steel strand bundle body 6, avoiding the deflection and shaking of the steel strand bundle body 6 during the conveying process, and further improving the precision and stability of the threading operation. Meanwhile, the setting of the carbon nanotube reinforced polymer coating significantly improves the wear resistance and friction resistance of the conveying track 207 and the supporting guide roller 308, reduces the friction resistance in the conveying process, and improves the conveying efficiency and service life of the steel strand overall threading machine. In addition, the setting of the guide rod 301 ensures the stability and accuracy of the sliding block 302 during movement, avoids the conveying problems caused by shaking or deviation, and further improves the reliability and safety of the steel strand overall threading machine.

[0027] As a technical optimization scheme of the present application, as shown in Figure 6 The steel strand bundle body 6 includes a steel core 601 and a steel wire 602, and the steel wire 602 is wound outside the steel core 601. Both the steel core 601 and the steel wire 602 are made of high-strength alloy material.

[0028] In use, the steel strand bundle body 6 is the core component of the threading operation, and its quality and performance directly affect the effect of the threading operation. The application of high-strength alloy material enables the steel core 601 and the steel wire 602 to have excellent strength and wear resistance, can withstand greater tension and friction, and is not prone to breakage or wear, thereby ensuring the stability and reliability of the steel strand bundle body 6 during the conveying process. Meanwhile, the high-strength alloy material also has good corrosion resistance, can maintain a long service life in harsh construction environments, and reduces maintenance costs. In addition, the structural design of the steel strand bundle body 6 also fully considers the actual construction requirements. The steel wire 602 is tightly wound outside the steel core 601 to form a stable structural system, further improving the overall strength and rigidity of the steel strand bundle body 6.

[0029] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above examples. The above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel strand integral threading machine, comprising a C-shaped fixing bracket (1) and a storage battery (5) for providing electrical energy, wherein the bottom of the storage battery (5) is fixedly installed on the top of the C-shaped fixing bracket (1), characterized in that: The C-shaped fixing bracket (1) has a T-shaped groove (8) and two grooves (9) on one side inside. A self-cleaning conveying assembly (2) is installed inside the T-shaped groove (8). A buffer guide assembly (3) is fixedly installed inside each groove (9). A connecting plate (4) is fixedly connected between the self-cleaning conveying assembly (2) and the two buffer guide assemblies (3). A steel strand bundle body (6) is provided inside the self-cleaning conveying assembly (2) and the buffer guide assembly (3). A back plate (10) with an installation hole is fixedly installed on the rear side of the C-shaped fixing bracket (1) or a support platform (7) is fixedly installed on the bottom of the C-shaped fixing bracket (1).

2. The integral strand threading machine according to claim 1, characterized in that: The self-cleaning conveying assembly (2) includes a T-shaped threaded block (203) and an L-shaped mounting bracket (204). The T-shaped threaded block (203) is disposed inside the T-shaped groove (8). The L-shaped mounting bracket (204) is fixed on the T-shaped threaded block (203). A slot (210) is provided on the outer side of the L-shaped mounting bracket (204). A plug (211) is slidably engaged inside the slot (210). A cleaning brush (212) is fixed at the bottom of the plug (211). A second motor (205) is fixedly installed on the inner side of the L-shaped mounting bracket (204). A rotating shaft (206) is installed at the output end of the second motor (205). A conveying track (207) for conveying the main body (6) of the steel strand bundle is engaged on the outer side of the rotating shaft (206), and the outer side of the conveying track (207) is in contact with the cleaning brush (212).

3. The integral strand threading machine according to claim 2, characterized in that: The top of the C-shaped fixed bracket (1) is fixedly installed with a first motor (202) for driving. The output shaft of the first motor (202) is equipped with a bidirectional screw (201) with reversed threads at both ends. The other end of the bidirectional screw (201) passes through the C-shaped fixed bracket (1) and is rotatably installed at the bottom of the T-shaped slide groove (8). The T-shaped threaded block (203) is threadedly connected to the bidirectional screw (201).

4. A steel strand integral threading machine according to claim 3, characterized in that: A generator (208) is fixedly installed on one side of the L-shaped mounting bracket (204), and a rotating shaft (209) is installed on the other side of the generator (208). The outer side of the rotating shaft (209) is engaged with the inner side of the conveyor belt (207).

5. A steel strand integral threading machine according to claim 1, characterized in that: The buffer guide assembly (3) includes a slider (302) and a fixing block (303). The slider (302) is slidably disposed inside the groove (9). One side of the slider (302) is connected to one side of the L-shaped mounting bracket (204) through the connecting plate (4). The fixing block (303) is fixedly mounted on the slider (302). A limiting groove (304) is provided inside the fixing block (303). A limiting block (306) is slidably disposed inside the limiting groove (304). A spring (305) is fixedly connected between the limiting block (306) and the top of the limiting groove (304).

6. A steel strand integral threading machine according to claim 5, characterized in that: A guide rod (301) is fixed inside the groove (9), and the slider (302) is slidably disposed outside the guide rod (301).

7. A steel strand integral threading machine according to claim 6, characterized in that: Each of the two limiting blocks (306) has a fixing plate (307) fixed on one side, and a support guide roller (308) is rotatably installed between the two fixing plates (307).

8. A steel strand integral threading machine according to claim 1, characterized in that: The main body (6) of the steel strand bundle includes a steel core (601) and a steel wire (602). The steel wire (602) is wound around the outside of the steel core (601). Both the steel core (601) and the steel wire (602) are made of high-strength alloy material.

9. A steel strand integral threading machine according to claim 2, characterized in that: The outer sides of the conveyor belt (207) and the support guide roller (308) are coated with a carbon nanotube-reinforced polymer coating.

10. A method for threading steel strands, implemented using a steel strand integral threading machine according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Place the main body (6) of the steel strand bundle between the self-cleaning conveyor assembly (2) and the two buffer guide assemblies (3). The self-cleaning conveyor assembly (2) and the buffer guide assemblies (3) move synchronously to clamp the main body (6) of the steel strand bundle. S2: The main body (6) of the steel strand bundle is transported along a predetermined path. The conveyor belt (207) drives the main body (6) of the steel strand bundle to move. At the same time, the cleaning brush (212) cleans the conveyor belt (207) to prevent impurities on the conveyor belt (207) from affecting the transport of the main body (6) of the steel strand bundle. S3: During the movement of the main body (6) of the steel strand bundle, the elastic action of the spring (305) causes the limiting block (306) to slide inside the limiting groove (304), thereby driving the support guide roller (308) to guide the main body (6) of the steel strand bundle, and preventing the main body (6) of the steel strand bundle from deviating during the movement.

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