A steel strand traction device

Abstract

This utility model relates to the technical field of steel strand traction devices. It provides a steel strand traction device comprising multiple support arms. Multiple support plates are equidistantly fixed to the top of the outer wall of each support arm. Bolts are rotatably connected to the center of each support plate. An adjustment mechanism is installed on the outer wall of each bolt for adjusting expansion. Connecting mechanisms are installed on the upper and lower sides of the outer wall of each support arm for quick connection and disassembly. The adjustment mechanism includes a hollow rotating wheel installed on the outer wall of the bolt. A hollow short block is fixedly connected to the rear side of the outer wall of the hollow rotating wheel. In this utility model, pulling the lever disengages the locking block from the slot, and rotating the rotating column drives the rack to slide via gears. This technical solution solves the problem of inconvenient inventory and management caused by storing multiple types of rollers.

Description

Technical Field

[0001] This utility model relates to the technical field of steel strand traction devices, specifically, to a steel strand traction device. Background Technology

[0002] Steel strand is a steel product made of multiple steel wires twisted together. It is commonly used in bridges, buildings, water conservancy, energy and geotechnical engineering. By applying prestress to the steel strand, the crack resistance and load-bearing capacity of the structure can be improved. The steel strand traction device is a device used to pull the steel strand to realize its feeding and stranding operations. It is widely used in bridge and building prestressed engineering.

[0003] Current stranded wire traction devices use rollers as the core component to manage and pull the stranded wire. These rollers are made of high-strength, wear-resistant materials and can withstand significant tension and friction. However, the spacing of traditional roller sets is relatively fixed. For stranded wires of different diameters, manual disassembly, replacement, and adjustment are required, which is time-consuming and labor-intensive. Existing technologies use bolts to fix the rollers. When replacement is needed, the nuts and bolts are tightened to replace the rollers with the required ones. However, this solution requires the pre-preparation of rollers of various diameters. When the stranded wire specifications change frequently, a large number of spare rollers need to be stored, which occupies storage space and is complex to manage. If the corresponding roller is temporarily unavailable, construction will be halted. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a steel strand traction device, which solves the technical problem that the existing solution requires the storage of rollers of various diameters, and when the strand specifications are frequently changed, there is a large inventory of spare parts and complex storage management.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a steel strand traction device, comprising multiple support arms, with multiple support plates equidistantly fixed to the top of the outer wall of each support arm, and a bolt rotatably connected to the center of each support plate. An adjustment mechanism is installed on the outer wall of the bolt for adjusting the extension. Connecting mechanisms are installed on both the upper and lower sides of the outer wall of each support arm for quick connection and disassembly. The adjustment mechanism includes a hollow wheel, which is installed on the outer wall of the bolt, and the rear side of the outer wall of the hollow wheel is fixed. A hollow short block is connected to the top of the hollow short block, and a rotating column is rotatably connected to the top of the hollow short block. Multiple slots are equidistantly opened on the outer wall of the rotating column. A support plate is fixedly connected to the rear side of the top of the hollow short block. A pull rod is slidably connected to the middle of the inner wall of the support plate. A spring is installed on the outer wall of the pull rod. A gear is fixedly connected to the lower middle part of the outer wall of the rotating column. A rack is slidably connected inside the hollow short block. An expansion cylinder is fixedly connected to the front end of the outer wall of the rack. A rotating wheel is fixedly connected to the front side of the outer wall of the expansion cylinder. A locking block is fixedly connected to the front end of the outer wall of the pull rod.

[0006] As a further description of the above technical solution:

[0007] The connecting mechanism includes a hollow block, which is installed on the upper and lower sides of the outer wall of the support arm. The inner wall of the hollow block has mesh positioning grooves on both the front and rear sides. A long plate is fixedly connected to the top left side of the right support arm. A sliding groove is opened inside the long plate. A sliding plate is installed in the sliding groove. A sliding channel plate is fixedly connected to the top of the sliding plate. A vertical plate is fixedly connected to the top of the sliding channel plate. A threaded rod is rotatably connected to the middle of the inner wall of the vertical plate. A second movable block is installed on the right side of the outer wall of the threaded rod. A double-section rotating plate is rotatably connected to both the front and rear sides of the outer wall of the second movable block. A mesh protrusion plate is rotatably connected to the other side of the outer wall of the double-section rotating plate. A first movable block is installed on the left end of the adjacent side of the outer wall of the mesh protrusion plate. The other end of the outer wall of the first movable block is fixedly connected to the left side of the inner wall of the hollow block.

[0008] As a further description of the above technical solution:

[0009] A throttle is fixedly connected to the right end of the outer wall of the threaded rod, and an anti-slip sleeve is fixedly connected to the outer wall of the throttle.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the rack is slidably connected to the interior of the hollow wheel, and the outer wall of the expanding cylinder is slidably connected to the interior of the hollow wheel.

[0012] As a further description of the above technical solution:

[0013] The gear meshes with the rack, and the rack has limit plates fixedly connected to both the front and rear ends of its outer wall.

[0014] As a further description of the above technical solution:

[0015] A cable tray is fixedly connected to the top of the support arm, and a screw is threadedly connected to the front side of the outer wall of the left support plate. A warning sign is threadedly connected to the outer wall of the screw.

[0016] As a further description of the above technical solution:

[0017] The top of the left support arm is fixedly connected with multiple clasps at equal intervals, and the top left side of the right support arm is fixedly connected with multiple buckles at equal intervals. The clasps engage with the buckles, and the outer wall of the bolt is threaded with a nut.

[0018] As a further description of the above technical solution:

[0019] The rear end of the outer wall of the spring is fixedly connected to the front end of the outer wall of the support plate, and the bottom end of the rotating column is rotatably connected to the bottom of the inner wall of the hollow wheel.

[0020] As a further description of the above technical solution:

[0021] The interior of the rotating wheel is slidably connected to the outer wall of the bolt, and a reinforcing frame is fixedly connected to the outer wall of the right-side support arm.

[0022] As a further description of the above technical solution:

[0023] The outer wall of the slide plate is slidably connected to the inside of the sliding groove, and the mesh protrusion plate is engaged with the mesh positioning groove.

[0024] The beneficial effects of the embodiments of this utility model are as follows:

[0025] 1. In this utility model, when adjusting the rotating wheel, pulling the lever causes the locking block to disengage from the slot, rotating the rotating column drives the rack to slide through the gear, pushing the expansion cylinder to move the rotating wheel radially to adapt to the diameter of the steel strand, and after adjustment, releasing the lever causes the spring to reset and fix the locking block, thus avoiding the inventory and management problems caused by storing multiple rollers.

[0026] 2. In this utility model, when connecting the two support arms, the throttle is turned to drive the threaded rod to rotate, causing the second moving block to move along the rod, which in turn drives the double-section rotating plate to push the mesh protrusion plate to slide in the hollow block and engage with the mesh positioning groove to complete the quick connection and fixation. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0028] Figure 1 This is a front view of a steel strand traction device proposed in this utility model;

[0029] Figure 2 This is a perspective view of a steel strand traction device proposed in this utility model;

[0030] Figure 3 This is a partial structural schematic diagram of a steel strand traction device proposed in this utility model;

[0031] Figure 4 This is a partial structural exploded view of a steel strand traction device proposed in this utility model;

[0032] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0033] Figure 6 This is an exploded view of the connection mechanism of a steel strand traction device proposed in this utility model;

[0034] Figure 7 This is a schematic diagram of the connection mechanism of a steel strand traction device proposed in this utility model;

[0035] Figure 8 This is a partial structural cross-sectional view of a steel strand traction device proposed in this utility model.

[0036] In the diagram: 1. Support arm; 2. Adjustment mechanism; 201. Hollow rotating wheel; 202. Extending cylinder; 203. Rotating wheel; 204. Support plate; 205. Locking block; 206. Rotating column; 207. Locking slot; 208. Gear; 209. Rack; 210. Limiting plate; 211. Spring; 212. Pull rod; 213. Hollow short block; 3. Connecting mechanism; 301. Hollow block; 302. Moving block one; 303. Threaded rod; 304. Mesh protrusion plate; 305. Long plate; 306. Slide plate; 307. Moving block two; 308. Double-section rotating plate; 309. Mesh positioning groove; 310. Vertical plate; 311. Sliding long groove; 312. Slide plate; 4. Loop ring; 5. Buckle; 6. Cable tray; 7. Nut; 8. Bolt; 9. Screw; 10. Warning sign; 11. Support plate; 12. Turn handle; 13. Anti-slip sleeve; 14. Reinforcing frame. Detailed Implementation

[0037] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0038] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0039] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Reference Figure 3 , Figure 4 and Figure 5This utility model provides an embodiment of a steel strand traction device, comprising multiple support arms 1, with multiple support plates 11 fixedly connected at equal intervals to the top of the outer wall of each support arm 1, and bolts 8 rotatably connected to the middle of each support plate 11. An adjustment mechanism 2 is installed on the outer wall of the bolts 8 for adjusting the extension. Connecting mechanisms 3 are installed on the upper and lower sides of the outer wall of each support arm 1 for quick connection and disassembly. The adjustment mechanism 2 includes a hollow rotating wheel 201, which is installed on the outer wall of the bolts 8. A hollow short block 213 is fixedly connected to the rear side of the outer wall of the hollow rotating wheel 201. A rotating column 206 is rotatably connected to the top of the hollow short block 213. Multiple slots 207 are equidistantly formed on the outer wall of the rotating column 206. A support plate 204 is fixedly connected to the rear side of the top of the hollow short block 213. A pull rod 212 is slidably connected to the middle of the inner wall of 204. A spring 211 is installed on the outer wall of the pull rod 212. A gear 208 is fixedly connected to the lower middle part of the outer wall of the rotating column 206. A rack 209 is slidably connected to the inside of the hollow short block 213. An extension cylinder 202 is fixedly connected to the front end of the outer wall of the rack 209. A rotating wheel 203 is fixedly connected to the front side of the outer wall of the extension cylinder 202. A locking block 205 is fixedly connected to the front end of the outer wall of the pull rod 212. The outer wall of the rack 209 is slidably connected to the inside of the hollow rotating wheel 201. The outer wall of the extension cylinder 202 is slidably connected to the inside of the hollow rotating wheel 201. The gear 208 is meshed with the rack 209. Limiting plates 210 are fixedly connected to the front and rear ends of the outer wall of the rack 209. The limiting plates 210 can prevent the rack 209 from falling off after moving too far.

[0044] Specifically, when the position of the rotating wheel 203 needs to be adjusted to accommodate steel strands of different diameters, the pull rod 212 is pulled. The pull rod 212 causes the locking block 205 to move backward, disengaging the locking block 205 from the slot 207 on the rotating column 206 and releasing the restriction on the rotating column 206. At this time, rotating the rotating column 206 causes the gear 208 on the outer wall of the rotating column 206 to rotate accordingly. Since the gear 208 is meshed with the rack 209, the rotation of the gear 208 will cause the rack 209 to slide inside the hollow short block 213 and inside the hollow rotating wheel 201. When the rack 209 slides, it will push the extension cylinder 202, which is fixedly connected to the front end, to slide inside the hollow rotating wheel 201, thereby causing the rotating wheel 203 at the front end of the extension cylinder 202 to move radially, thus adjusting the position of the rotating wheel 203 to accommodate different diameters. When the diameter of the steel strand is adjusted to the appropriate position, the pull rod 212 is released. Under the elastic force of the spring 211, the pull rod 212 drives the locking block 205 to move forward and re-lock into the slot 207 of the rotating column 206, fixing the position of the rotating column 206 and keeping the rotating wheel 203 in the adjusted position. This avoids the problem of large spare parts inventory and complex storage management when the strand specifications are frequently changed due to the need to store rollers of various diameters. The outer wall of the rack 209 is slidably connected to the inside of the hollow rotating wheel 201, and the outer wall of the extended cylinder 202 is slidably connected to the inside of the hollow rotating wheel 201. The gear 208 is meshed with the rack 209. The front and rear ends of the outer wall of the rack 209 are fixedly connected to the limit plate 210, which can prevent the rack 209 from falling off after moving too far.

[0045] Reference Figure 6 , Figure 7 and Figure 8The connecting mechanism 3 includes a hollow block 301, which is installed on the upper and lower sides of the outer wall of the support arm 1. The inner wall of the hollow block 301 has mesh positioning grooves 309 on both the front and rear sides. A long plate 305 is fixedly connected to the top left side of the right support arm 1. A sliding groove 311 is formed inside the long plate 305, and a sliding plate 312 is installed in the sliding groove 311. A sliding plate 306 is fixedly connected to the top of the sliding plate 312, and a vertical plate 310 is fixedly connected to the top of the sliding plate 306. A threaded rod 303 is rotatably connected to the middle of the inner wall of the vertical plate 310. A second movable block 307 is installed on the right side of the outer wall of the threaded rod 303. A double-section rotating plate 308 is rotatably connected to the front and rear sides of the outer wall of the second movable block 307. A mesh protrusion plate 304 is rotatably connected to the other side of the outer wall of 8. A movable block 302 is installed on the left end of the adjacent side of the outer wall of the mesh protrusion plate 304. The other end of the outer wall of the movable block 302 is fixedly connected to the left side of the inner wall of the hollow block 301. A handle 12 is fixedly connected to the right end of the outer wall of the threaded rod 303. An anti-slip sleeve 13 is fixedly connected to the outer wall of the handle 12. The handle 12 facilitates the rotation of the threaded rod 303 by the operator. A cable tray 6 is fixedly connected to the top of the support arm 1. A screw 9 is threadedly connected to the front side of the outer wall of the left support plate 11. A warning sign 10 is threadedly connected to the outer wall of the screw 9. The warning sign 10 can remind the operator of precautions during operation and use, thereby reducing the probability of accidents.

[0046] Specifically, when it is necessary to connect two support arms 1, turn the throttle 12 to drive the threaded rod 303 to rotate. Since the threaded rod 303 and the movable block 307 are threaded together, the movable block 307 can move left or right on the threaded rod 303. When the movable block 307 moves, it drives the double-section rotating plate 308 to rotate. The other end of the double-section rotating plate 308 pushes the mesh protrusion plate 304 to slide inside the hollow block 301. When the mesh protrusion plate 304 engages with the mesh positioning groove 309 on the inner wall of the hollow block 301, the two support arms 1 can be quickly connected and fixed. The right end of the outer wall of the threaded rod 303 is fixedly connected to the handle 12. The outer wall of the handle 12 is fixedly connected to the anti-slip sleeve 13. The handle 12 makes it easy for the operator to rotate the threaded rod 303. The top of the support arm 1 is fixedly connected to the cable tube 6. The front side of the outer wall of the left support plate 11 is threadedly connected to the screw 9. The outer wall of the screw 9 is threadedly connected to the warning sign 10. The warning sign 10 can remind the operator of the precautions when operating and using the equipment, thereby reducing the probability of accidents.

[0047] Reference Figure 1 , Figure 2 and Figure 7Multiple clasps 4 are fixedly connected at equal intervals to the top of the left support arm 1, and multiple buckles 5 are fixedly connected at equal intervals to the top left side of the right support arm 1. The clasps 4 and buckles 5 engage, which enhances the stability between the two support arms. Nuts 7 are threadedly connected to the outer wall of the bolt 8. The rear end of the outer wall of the spring 211 is fixedly connected to the front end of the outer wall of the support plate 204. The bottom end of the rotating column 206 is rotatably connected to the bottom of the inner wall of the hollow wheel 201. The hollow wheel 201 can support the rotating column 206 to rotate. The inside of the rotating wheel 203 is slidably connected to the outer wall of the bolt 8. A reinforcing frame 14 is fixedly connected to the outer wall of the right support arm 1. The outer wall of the slide plate 312 is slidably connected to the inside of the sliding groove 311. The mesh protrusion plate 304 engages with the mesh positioning groove 309. The engagement of the mesh protrusion plate 304 and the mesh positioning groove 309 can achieve quick docking.

[0048] Specifically, multiple latches 4 are fixedly connected at equal intervals to the top of the left support arm 1, and multiple buckles 5 are fixedly connected at equal intervals to the top left side of the right support arm 1. The latches 4 and buckles 5 engage, which enhances the stability between the two support arms. Nuts 7 are threaded onto the outer wall of the bolt 8. The rear end of the outer wall of the spring 211 is fixedly connected to the front end of the outer wall of the support plate 204. The bottom end of the rotating column 206 is rotatably connected to the bottom of the inner wall of the hollow wheel 201. The hollow wheel 201 supports the rotating column 206 to rotate. The interior of the rotating wheel 203 is slidably connected to the outer wall of the bolt 8. A reinforcing frame 14 is fixedly connected to the outer wall of the right support arm 1. The outer wall of the slide plate 312 is slidably connected to the interior of the sliding groove 311. The mesh protrusion plate 304 engages with the mesh positioning groove 309. The engagement of the mesh protrusion plate 304 and the mesh positioning groove 309 enables quick docking.

[0049] Working principle: When the position of the rotating wheel 203 needs to be adjusted to accommodate steel strands of different diameters, the pull rod 212 is pulled. The pull rod 212 drives the locking block 205 to move backward, causing the locking block 205 to disengage from the locking groove 207 on the rotating column 206, thus releasing the restriction on the rotating column 206. At this time, rotating the rotating column 206 causes the gear 208 on the outer wall of the rotating column 206 to rotate accordingly. Since the gear 208 is meshed with the rack 209, the rotation of the gear 208 will cause the rack 209 to slide inside the hollow short block 213 and inside the hollow rotating wheel 201. When the rack 209 slides, it will push the extension cylinder 202 fixedly connected to the front end. The hollow rotating wheel 201 slides inside, thereby driving the rotating wheel 203 at the front end of the expanding cylinder 202 to move radially, thereby adjusting the position of the rotating wheel 203 to accommodate steel strands of different diameters. When the position is adjusted to the appropriate position, the pull rod 212 is released. Under the elastic force of the spring 211, the pull rod 212 drives the locking block 205 to move forward and re-lock into the slot 207 of the rotating column 206, fixing the position of the rotating column 206 and keeping the rotating wheel 203 in the adjusted position. This avoids the problem of having a large inventory of spare parts and complex storage management when the specifications of the strands are frequently changed, due to the need to keep multiple diameter rollers in reserve.

[0050] When it is necessary to connect two support arms 1, turn the handle 12 to drive the threaded rod 303 to rotate. Since the threaded rod 303 and the second movable block 307 are threadedly engaged, the second movable block 307 will move left or right on the threaded rod 303. When the second movable block 307 moves, it drives the double-section rotating plate 308 to rotate. The other end of the double-section rotating plate 308 pushes the mesh protrusion plate 304 to slide inside the hollow block 301. When the mesh protrusion plate 304 engages with the mesh positioning groove 309 on the inner wall of the hollow block 301, the two support arms 1 can be quickly connected and fixed.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A steel strand pulling device comprising a plurality of support arms (1), characterised in that: Multiple support plates (11) are fixedly connected at equal intervals on the top of the outer wall of the support arm (1). Bolts (8) are rotatably connected to the middle of the support plates (11). An adjustment mechanism (2) is installed on the outer wall of the bolts (8). The adjustment mechanism (2) is used to adjust the extension. Connecting mechanisms (3) are installed on the upper and lower sides of the outer wall of the support arm (1). The connecting mechanisms (3) are used for quick connection and disassembly. The adjusting mechanism (2) includes a hollow rotating wheel (201), which is mounted on the outer wall of the bolt (8). A hollow short block (213) is fixedly connected to the rear side of the outer wall of the hollow rotating wheel (201). A rotating column (206) is rotatably connected to the top of the hollow short block (213). Multiple slots (207) are equidistantly provided on the outer wall of the rotating column (206). A support plate (204) is fixedly connected to the rear side of the top of the hollow short block (213). The middle part of the inner wall of the support plate (204) A pull rod (212) is slidably connected, and a spring (211) is installed on the outer wall of the pull rod (212). A gear (208) is fixedly connected to the lower middle part of the outer wall of the rotating column (206). A rack (209) is slidably connected inside the hollow short block (213). An expansion cylinder (202) is fixedly connected to the front end of the outer wall of the rack (209). A rotating wheel (203) is fixedly connected to the front side of the outer wall of the expansion cylinder (202). A locking block (205) is fixedly connected to the front end of the outer wall of the pull rod (212).

2. A steel strand pulling device according to claim 1, characterized in that: The connecting mechanism (3) includes a hollow block (301), which is installed on the upper and lower sides of the outer wall of the support arm (1). Mesh positioning grooves (309) are provided on the front and rear sides of the inner wall of the hollow block (301). A long plate (305) is fixedly connected to the top left side of the right support arm (1). A sliding groove (311) is provided inside the long plate (305). A sliding plate (312) is installed in the sliding groove (311). A sliding plate (306) is fixedly connected to the top of the sliding plate (312). A sliding groove plate (306) is fixedly connected to the top of the sliding plate (306). A vertical plate (310) is rotatably connected to a threaded rod (303) in the middle of its inner wall. A movable block two (307) is installed on the right side of the outer wall of the threaded rod (303). A double-section rotating plate (308) is rotatably connected to both the front and rear sides of the outer wall of the movable block two (307). A mesh protrusion plate (304) is rotatably connected to the other side of the outer wall of the double-section rotating plate (308). A movable block one (302) is installed on the left end of the adjacent side of the outer wall of the mesh protrusion plate (304). The other end of the outer wall of the movable block one (302) is fixedly connected to the left side of the inner wall of the hollow block (301).

3. A steel strand pulling device according to claim 2, characterised in that: A throttle (12) is fixedly connected to the right end of the outer wall of the threaded rod (303), and an anti-slip sleeve (13) is fixedly connected to the outer wall of the throttle (12).

4. A steel strand pulling device according to claim 1, characterized in that: The outer wall of the rack (209) is slidably connected to the interior of the hollow wheel (201), and the outer wall of the expanding cylinder (202) is slidably connected to the interior of the hollow wheel (201).

5. A steel strand pulling device according to claim 1, characterized in that: The gear (208) meshes with the rack (209), and the front and rear ends of the outer wall of the rack (209) are fixedly connected to limit plates (210).

6. A steel strand pulling device as defined in claim 1, characterized in that: The top of the support arm (1) is fixedly connected to a cable tray (6), and the front side of the outer wall of the support plate (11) on the left is threaded with a screw (9), and the outer wall of the screw (9) is threaded with a sign (10).

7. A steel strand pulling device as defined in claim 1, characterized in that: The top of the left support arm (1) is fixedly connected with multiple clasps (4) at equal intervals, and the top left side of the right support arm (1) is fixedly connected with multiple buckles (5) at equal intervals. The clasps (4) engage with the buckles (5), and the outer wall of the bolt (8) is threaded with a nut (7).

8. A steel strand pulling device as defined in claim 1, characterized in that: The rear end of the outer wall of the spring (211) is fixedly connected to the front end of the outer wall of the support plate (204), and the bottom end of the rotating column (206) is rotatably connected to the bottom of the inner wall of the hollow wheel (201).

9. A steel strand pulling device according to claim 2, characterized in that: The interior of the rotating wheel (203) is slidably connected to the outer wall of the bolt (8), and a reinforcing frame (14) is fixedly connected to the outer wall of the right support arm (1).

10. A steel strand pulling device according to claim 2, characterized in that: The outer wall of the slide plate (312) is slidably connected to the interior of the sliding groove (311), and the mesh protrusion plate (304) engages with the mesh positioning groove (309).

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