Steel strand threading steering guide device
By designing a steering pulley and adjustment mechanism on the wind turbine tower to adjust the position of the rope lead-out point, the problem of the rope scraping against the borehole wall during the steel strand traction process was solved, and the rope was smoothly threaded, ensuring the integrity and efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-17
AI Technical Summary
During the traction process of the steel strands of the wind turbine tower, the deviation between the rope lead-out point on the fixed pulley and the position of the cable threading hole causes the traction rope to be threaded at an angle, resulting in the traction rope scraping against the hole wall and affecting the integrity of the rope and anchor.
Design a steel strand threading and steering guide device. Adjust the projection position of the rope lead-out point with the steering pulley and adjustment mechanism to align it with the threading hole, ensuring that the rope is threaded in a plumb bob orientation and reducing the degree of scratching.
It effectively reduces the scraping between the traction rope and the hole wall of the cable threading hole, ensuring the integrity of the rope and anchor, and improving the cable threading efficiency and equipment life.
Smart Images
Figure CN224002845U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the cable threading operation of wind turbine towers, specifically to a steel strand threading and steering guide device. Background Technology
[0002] Wind turbine towers typically employ a steel-concrete composite (SPC) structure. This structure uses a concrete tower section at the bottom and a steel tower section at the top. The concrete tower sections are prefabricated and assembled and hoisted on-site. After hoisting, prestress is applied to the entire concrete tower section using steel strand bundles to form a unified structure and improve the bending resistance of the assembled tower. The steel strands, which can be tens or even hundreds of meters long, need to be pulled from the bottom to the top using crane machinery. Currently, mechanical equipment is used for pulling the steel strands. However, due to the numerous cable-threading holes on the anchor, after the traction rope is turned by the fixed pulley, the projection of the rope's exit point on the fixed pulley in the plumb line often deviates from the relative position of the cable-threading hole. This forces the traction rope to pass obliquely through the cable-threading hole, resulting in severe scraping between the traction rope and the hole wall, affecting the integrity of the traction rope and the anchor. This problem needs to be solved. Utility Model Content
[0003] This utility model provides a steel strand threading and steering guide device, which can adjust the projection position of the rope lead-out point on the fixed pulley in the plumb line, so as to prevent the traction rope from passing through the threading hole in an excessively inclined posture and reduce the degree of rubbing between the traction rope and the hole wall.
[0004] To achieve the above objectives, the technical solution adopted is as follows: a steel strand threading and turning guide device, wherein a turning pulley is provided on a support erected on the upper end of the tower wall and the wheel core of the turning pulley is in the horizontal direction, the turning pulley is located above the anchor seat at the upper end of the tower wall, and an adjustment mechanism is provided between the turning pulley and the support for adjusting the projection position of the plumb bob on the anchor seat of the turning pulley.
[0005] Compared with the prior art, the technical effect of this utility model is as follows: by adjusting the adjustment mechanism to adjust the plumb projection position of the steering pulley on the anchor, the lead-out point of the traction rope on the steering pulley and the hole area of the cable-passing hole to be threaded can be arranged vertically opposite each other. The traction rope can pass through the cable-passing hole in a near plumb position, reducing the horizontal pressure force between the traction rope and the hole wall. The degree of scraping between the traction rope and the hole wall is significantly improved, ensuring the integrity of the traction rope and the anchor. Attached Figure Description
[0006] Figure 1 This is a reference diagram showing the usage state of this utility model;
[0007] Figure 2 for Figure 1Schematic diagram of a local structure in the middle;
[0008] Figure 3 This is a schematic diagram showing the connection between the pulley frame and the support.
[0009] Figure 4 This is a side view of the bracket. Detailed Implementation
[0010] The following is in conjunction with the appendix Figure 1-4 The present invention will be further described in detail below, including related content:
[0011] A steel strand threading and steering guide device is provided, wherein a steering pulley 20 is provided on a bracket 10 erected on the upper end of the tower 1 cylinder wall and the wheel core of the steering pulley 20 is in the horizontal direction. The steering pulley 20 is located above the anchor seat 2 at the upper end of the tower 1 cylinder wall. An adjustment mechanism is provided between the steering pulley 20 and the bracket 10 for adjusting the projection position of the plumb bob on the anchor seat 2 of the steering pulley 20.
[0012] In the above technical solution, when threading the cable through the anchor 2, a traction assembly is installed at the top of the tower 1. The traction rope on the traction assembly is turned by the steering pulley 20 on the support 10 and then passed downward through the cable-threading hole on the anchor 2, thereby lowering the traction rope to the bottom of the tower to connect with the steel strand at the bottom of the tower. Then, the traction assembly lifts the traction rope, pulling the steel strand upward to the cable-threading hole on the anchor 2 and fixing it. In this solution, the adjustment mechanism can be used to adjust the plumb projection position of the steering pulley 20 on the anchor 2, so that the lead-out point of the traction rope on the steering pulley 20 is arranged vertically opposite to the area of the cable-threading hole to be threaded. After being turned by the steering pulley 20, the traction rope can pass through the cable-threading hole in a near-plumb orientation, reducing the horizontal pressure force between the traction rope and the wall of the cable-threading hole. The degree of scraping between the traction rope and the wall of the cable-threading hole is significantly improved, ensuring the integrity of the traction rope and the cable-threading hole on the anchor 2.
[0013] It should be noted that in actual cable threading operations, considering the efficiency of cable threading, the orthographic projection of the lead-out point of the traction rope on the steering pulley 20 is usually not completely aligned with the center position of the cable threading hole to be threaded. Slight deviation does not affect the normal traction cable threading operation.
[0014] As a preferred embodiment, the upper end of the support 10 is provided with a cantilever frame 11 extending towards the center of the tower cylinder 1's opening. A connecting rod 12 is provided at the suspended end of the cantilever frame 11. The length direction of the connecting rod 12 is parallel to the wheel core direction of the pulley 20, and both are parallel to the tangent direction of the tower cylinder 1's opening at the location of the support 10. The axle of the steering pulley 20 is connected to the pulley frame 21, and the two form a rotational fit. The upper end of the pulley frame 21 is connected to the connecting rod 12, and the pulley frame 21 forms a guide sliding fit along the length direction of the connecting rod 12. In this embodiment, the steering pulley 20 is attached to the pulley frame 21, and the pulley frame 21 can slide on the connecting rod 12 along its length direction. By changing the relative position of the pulley frame 21 on the connecting rod 12, the relative position between the steering pulley 20 and the anchor 2 can be adjusted along the length of the connecting rod 12, so that the traction rope after being turned by the steering pulley 20 can be threaded through the corresponding cable hole in that direction in a plumb bob orientation.
[0015] It should be noted that, as Figure 1 As shown, the outer periphery of the tower 1 is circular. The tangent direction of the tower 1 opening at the location of the support 10 refers to the tangent direction on the circular outline of the tower 1 passing through the point when the support 10 is regarded as a point.
[0016] Furthermore, a hook 211 is provided at the upper end of the pulley frame 21. The hook 211 is hooked onto the middle part of the connecting rod 12, and the two form a surface contact movable fit. The upper end of the pulley frame 21 is connected to the connecting rod 12 by the hook 211, and the hook 211 can slide on the connecting rod 12 to change the relative position between the pulley frame 21 and the connecting rod 12.
[0017] As a preferred embodiment, two cantilever frames 11 are arranged parallel to each other along the length of the connecting rods 12. The two ends of the connecting rods 12 are supported on the cantilever frames 11. The pulley frame 21 is located in the middle area of the two cantilever frames 11. The connecting rods 12 serve as the load-bearing components of the pulley frame 21. In this embodiment, both ends of the connecting rods 12 are reliably supported, ensuring structural stability.
[0018] Combination Figure 2-4 As shown, the upper end of the pulley frame 21 is hinged to the cantilever frame 11 with the connecting rod 12 as the hinge axis. An adjusting member 13 is provided between the pulley frame 21 and the support 10. The adjusting member 13 is used to adjust the distance between the plumb surface of the core of the steering pulley 20 and the plumb surface of the core of the connecting rod 12. With the adjusting member 13, the position of the steering pulley 20 relative to the anchor 2 can be changed in the radial direction of the tower 1, so that the traction rope after being turned by the steering pulley 20 can pass through the corresponding cable hole in the direction of the plumb bob.
[0019] With the joint arrangement of pulley frame 21, connecting rod 12, and adjusting component 13, the position of the vertical projection of steering pulley 20 in the XY horizontal plane can be adjusted, thereby reasonably controlling the relative positional relationship between the lead-out point of the traction rope on steering pulley 20 and each cable hole on anchor seat 2.
[0020] As a preferred embodiment, the adjusting component 13 includes a screw 131, a movable connecting ear 212 on the pulley frame 21, and a fixed connecting ear 14 on the same side of the bracket 10. The movable connecting ear 212 and the fixed connecting ear 14 are arranged horizontally opposite each other. Both the movable connecting ear 212 and the fixed connecting ear 14 have through holes A, and the through hole A is perpendicular to the length direction of the connecting rod 12. The screw 131 passes through the through hole A on the movable connecting ear 212 and the fixed connecting ear 14, and the diameter of the through hole A is larger than the diameter of the screw 131. A nut 132 is connected to the body of the screw 131 located on the opposite side of the movable connecting ear 212 and the fixed connecting ear 14. The outer diameter of the nut 132 is larger than the diameter of the through hole A. In this design, nuts 132 are connected to both ends of the screw 131. When the two nuts 132 are controlled to move closer to each other on the screw 131, the pushing and limiting action of the nuts 132 on the moving connecting lug 212 and the fixed connecting lug 14 allows the pulley frame 21 to swing around the connecting rod 12 as an axis, thereby adjusting the distance between the plumb surface of the steering pulley 20 wheel core and the plumb surface of the connecting rod 12 rod core. At this time, the orthographic projection of the traction rope lead-out point on the steering pulley 20 can change in the radial direction of the tower 1 to meet the cable threading requirements. Conversely, when the two nuts 132 are controlled to move further apart on the screw 131, the distance between the plumb surface of the steering pulley 20 wheel core and the plumb surface of the connecting rod 12 rod core can also be changed.
[0021] It should be noted that, since the diameter of the through hole A is larger than the diameter of the screw 131, there is space between the wall of the through hole A and the body of the screw 131 for the screw 131 to move within it. This is to ensure that when the pulley frame 21 moves along the length of the connecting rod 12, the screw 131 will not interfere with the wall of the through hole A, thus preventing the pulley frame 21 from moving. Furthermore, even if the pulley frame 21 wobbles, causing the moving connecting lug 212 and the fixed connecting lug 14 to be out of parallel planes, the screw 131 will not interfere with either the moving connecting lug 212 or the fixed connecting lug 14. Of course, excessive translation or swaying of the pulley frame 21 may be affected, but in actual cable threading operations, the pulley frame 21 does not need to translate or sway excessively.
[0022] As a preferred embodiment, the through hole A on the movable connecting lug 212 and / or the fixed connecting lug 14 is an oblong hole, with the major axis of the oblong hole parallel to the length of the connecting rod 12. In this embodiment, the through hole A is set as an oblong hole, allowing the rod body of the screw 131 to translate within the through hole A along the length of the connecting rod 12, thus meeting the reasonable translation requirements of the pulley frame 21. Whether the oblong hole is set on the movable connecting lug 212 or the fixed connecting lug 14, it avoids interference between the screw 131 and the wall of the through hole A, which could affect the translation of the pulley frame 21.
Claims
1. A steel strand threading diversion guide characterized by: The support (10) erected on the upper end of the tower drum (1) wall is provided with a deflection pulley (20), and the wheel core direction of the deflection pulley (20) is horizontal, the deflection pulley (20) is above the anchor base (2) on the upper end of the tower drum (1) wall, and an adjusting mechanism for adjusting the plumb projection position of the deflection pulley (20) on the anchor base (2) is arranged between the deflection pulley (20) and the support (10); The upper end of the support (10) is provided with a cantilever frame (11) extending to the middle of the tower drum (1) hole range, a connecting rod (12) is arranged at the overhanging end position of the cantilever frame (11), the rod length direction of the connecting rod (12) is parallel to the wheel core direction of the pulley (20), and both are parallel to the tangential direction of the tower drum (1) drum opening at the position of the support (10), the wheel shaft of the deflection pulley (20) is connected with a pulley frame (21), and the two constitute a rotating fit, the upper end of the pulley frame (21) is connected with the connecting rod (12), and the pulley frame (21) constitutes a guide sliding fit along the rod length direction of the connecting rod (12); The upper end of the pulley frame (21) is hinged to the cantilever frame (11) with the connecting rod (12) as the hinge shaft, and an adjusting piece (13) is arranged between the pulley frame (21) and the support (10), the adjusting piece (13) is used for adjusting the distance between the plumb plane passing through the wheel core of the deflection pulley (20) and the plumb plane passing through the rod core of the connecting rod (12); The adjusting piece (13) includes a screw rod (131), a movable connecting lug (212) is arranged on the pulley frame (21), and a fixed connecting lug (14) is arranged on the same side of the support (10), the movable connecting lug (212) and the fixed connecting lug (14) are arranged horizontally opposite to each other as a whole, through holes (A) are formed in the movable connecting lug (212) and the fixed connecting lug (14), the through direction of the through holes (A) is perpendicular to the rod length direction of the connecting rod (12), the screw rod (131) passes through the through holes (A) in the movable connecting lug (212) and the fixed connecting lug (14), the hole diameter of the through holes (A) is greater than the rod diameter of the screw rod (131), and a nut (132) is connected to the rod of the screw rod (131) on the side opposite to the movable connecting lug (212) and the fixed connecting lug (14), the outer diameter of the nut (132) is greater than the hole diameter of the through hole (A).
2. A steel strand threading guide as claimed in claim 1, characterised in that: The upper end of the pulley frame (21) is provided with a hook (211), and the hook (211) is hung on the middle part of the connecting rod (12) and constitutes a surface contact movable fit therebetween.
3. A strand threading guide according to claim 1, characterized in that: The cantilever frames (11) are arranged in parallel at a distance along the rod length direction of the connecting rod (12), the two ends of the connecting rod (12) are arranged on the cantilever frames (11), and the pulley frame (21) is located in the middle region of the two cantilever frames (11).
4. The strand threading guide of claim 1, wherein: The through holes (A) on the movable connecting lug (212) and / or the fixed connecting lug (14) are waist-shaped holes, and the long diameter direction of the waist-shaped holes is parallel to the rod length direction of the connecting rod (12).