Method for manufacturing a reel of a swivel cable

Abstract

To provide a method for creating a reel of a rotating cale which can realize the simultaneous traction of both head and tail ends of a cable strand of a cable, and has high reel creation efficiency as well.SOLUTION: A method for creating a reel of a rotating cable comprises: a step S1 in which one cable is wound onto a first cable reel by adopting a common winding system in which a head of a cable strand of a cable is on the inside and a tail thereof is on the outside; a step S2 in which a second cable reel is left at the middle point of the cable strand of the cable upon winding the same at the middle point of the cable strand of the cable; a step S3 in which the cable is rotated at the middle point of the cable strand to form a bent end; a step S4 in which the bent end is temporarily fixed to the second cable reel; and a step S5 in which the first cable reel is released and the second cable reel is retracted until the cable is completely folded in half and is wound onto the second cable reel.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This application relates to the field of suspension bridge technology, and specifically to a method for creating a reel of a swivel cable.

Background Art

[0002] A swivel cable suspension bridge is one in which the main cables on the left and right sides are single cables. The main cable starts from an anchor on one bank, bypasses the anchor on the other bank, and then returns to be anchor-fixed to the anchor on the starting bank. When the span is the same, the length of the swivel cable is approximately twice the length of the single cable of the conventional double cable (as shown in Figure 1). The cable strands of the main cable continuously pass through the swivel anchor, and the swivel cable saddle system is used to realize the fixing of the cable strands to the swivel anchor, replacing the cutting and dispersing anchor fixing at the anchor of the cable strands of the conventional main cable. By fully utilizing the constant load self-balancing characteristics of the main cable, the anchor fixing structure and the anchor structure can be optimized. However, the cable strands of the swivel cable suspension bridge are single from the conventional upstream and downstream, and the cable strands are long and need to turn, so the erection difficulty is great.

[0003] Therefore, it is necessary to provide a technical solution to improve the deficiencies of the above prior art.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a method for creating a reel of a swivel cable to solve or alleviate the problems existing in the prior art.

Means for Solving the Problems

[0005] To achieve the above object, the present invention provides the following technical solution.

[0006] Adopting the normal winding method where the head of the cable strand of the cable is inside and the tail is outside, a step S1 of winding a single cable onto a first cable reel; When winding at the midpoint of the cable strand of the cable, a step S2 of placing a second cable reel at the midpoint of the cable strand of the cable; A step S3 of turning the cable at the midpoint of the cable strand to form a bent end; A step S4 of temporarily fixing the bent end to the second cable reel; Including a step S5 where, until the cable is completely doubled and wound onto the second cable reel, the first cable reel pays out the cable and the second cable reel takes in (recovers the cable); Specifically, step S3 is that after the first cable reel pays out the cable and pulls the midpoint of the cable strand of the cable beyond a certain distance from the second cable reel, the cable is turned at the midpoint of the cable strand to form a bent end which is a cable strand ring; Specifically, step S4 is to temporarily fix the cable strand ring to the second cable reel; The second cable reel is a cable reel of a swivel cable including a first reel rack, a second reel rack, and a spin base. The first reel rack is provided on the spin base and rolls along with the rotation of the spin base; The axial direction of the first reel rack is parallel to the rolling axis direction of the spin base; The second reel rack is used to temporarily fix the cable strand ring after the cable is doubled; The first reel rack is used to wind the cable strand of the cable after it is doubled; The second reel rack is provided with an anti - slipping structure, and the spin base is provided with a temporary fixing structure. Method for manufacturing a reel of a swivel cable. Beneficial effects

[0007] 1. Provide a technical solution for creatively pulling both the head and tail ends of the cable strands of the same cable from one end of a suspension bridge to the other end simultaneously. The cable laying efficiency of this technical solution is much higher than that of conventional technical means. Moreover, it further avoids the situation in conventional technical means where the cable cannot complete the high-difficulty steering operation without a swivel cable saddle, greatly reducing the construction difficulty and having excellent operational convenience.

[0008] 2. Provide a method for creating a reel for winding a cable that is folded in two, realizing the simultaneous pulling of both the head and tail ends of the cable strands of the cable, saving the operation space of the cable winding method, and having a high reel creation efficiency.

[0009] 3. Provide a cable reel structure to avoid damage at the two-fold position of the cable strands of the cable, ensure the stability of the shape of the bent end of the cable strands of the cable, realize efficient two-fold winding of the cable strands of the cable, and further, by means of the two-fold winding method, wind the cable onto the cable reel and realize the operation of simultaneously pulling and laying the head and tail ends of the cable strands of the same cable.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0011] Hereinafter, the method for installing the swivel cable of the present application, the method for creating a reel, and the cable reel will be described in more detail in combination with FIGS. 1 to 7.

[0012] Step S2 of simultaneously pulling and unreeling both the head and tail ends of the same cable 5 from one end to the other end of the suspension bridge, After unreeling, step S3 of performing an anchor fixing method for the cable 5, which is a method for installing a swivel cable.

[0013] In a specific embodiment of the present application, the suspension bridge is specifically a single-tower swivel cable anchor suspension bridge erected across a river. In order to reduce earthwork excavation and environmental damage, the bridge tower is provided on the south bank, and only the swivel anchor structure 9 is provided on the north bank. The swivel anchor structure 9 is specifically a covered gravity anchor. Pull and unreel both the head and tail ends of the same cable 5 from the north bank to the south bank of the suspension bridge simultaneously. As shown in FIG. 2, ensure that both the head and tail ends of the cable 5 are unreeled in parallel. In order to optimize the force-receiving direction of the cable 5, a plurality of guide frames are also provided. The head and tail ends of the cable 5 respectively pass through a plurality of guide frames in sequence and are adjusted to a parallel positional relationship with each other. After unreeling, the central part of the cable 5 is anchor-fixed to the swivel anchor structure 9. The swivel anchor structure 9 is provided with a swivel cable saddle for balancing the force-receiving situation of the central part of the cable 5.

[0014] In the conventional laying of a swivel cable, it was necessary to continuously pass one end of the cable 5 through the swivel anchor and then realize the swivel. However, the length of the cable 5 of the swivel cable is longer than that of the conventional cable 5. Correspondingly, the difficulty of the turning operation process is high, the laying time is long, and the method of simultaneously pulling and releasing the head and tail ends of the same cable 5 is adopted. Therefore, while the releasing time can be significantly shortened and the releasing efficiency can be increased, it is avoided that one end of the cable 5 continuously passes through the swivel anchor structure 9 to complete the turning operation, and the construction difficulty is reduced.

[0015] It includes step S1 of winding the cable 5 onto a cable reel by adopting a method of folding in half and winding.

[0016] In a specific embodiment of the present application, the cable reel is provided along the axial direction of the suspension bridge, specifically, it is located at the swivel anchor structure 9. The swivel anchor structure 9 is provided with an anchor fixing groove. After the cable 5 is released, it is anchor-fixed in the anchor fixing groove to stably maintain the swivel state. Specifically, the anchor fixing groove is a semi-circular approximate groove with a certain radius dimension, which includes two straight line segments and one bending segment. The extending direction of the two straight line segments is the same as the releasing direction of the cable 5, and the lateral interval between the two straight line segments is the same as the lateral interval when the head and tail ends of the cable 5 are released in parallel. A plurality of guide frames are specifically arranged along the circumferential direction of the anchor fixing groove.

[0017] In the conventional winding method as shown in Figure 3 (the head of the cable strand is inside and the tail of the cable strand is outside), the operation of simultaneously pulling the head and tail ends of the cable strand of the cable 5 in the same direction cannot be realized. The present application creatively adopts a method of folding in half and winding to wind the cable 5 onto the cable reel, while realizing the operation of simultaneously releasing the head and tail ends of the cable strand of the cable 5, facilitating the storage, transportation, and releasing of the cable 5, and saving the operation space required when the cable 5 is released.

[0018] Adopting the normal winding method where the head of the cable strand of cable 5 is on the inside and the tail is on the outside, step S1 of winding a single cable 5 onto the first cable reel 1; When winding at the midpoint of the cable strand of cable 5, step S2 of placing the second cable reel 2 at the midpoint of the cable strand of cable 5; Step S3 of turning cable 5 at the midpoint of the cable strand to form a bent end 13; Step S4 of temporarily fixing the bent end 13 to the second cable reel 2; Step S5 of the first cable reel 1 paying out and the second cable reel 2 taking in until cable 5 is completely wound around the second cable reel 2 in a double-folded manner; A method for creating a reel of a swivel cable 5, including the above steps.

[0019] In a specific embodiment of the present application, the method for creating a reel wound in a double-folded manner is specifically as follows: First, wind cable 5 onto the first cable reel 1 by the normal winding method. When winding to the midpoint position of cable 5, stop, place the second cable reel 2 at the midpoint position of cable 5, keep a certain distance between the first cable reel 1 and the second cable reel 2, bend cable 5 at the midpoint to form a bent end 13, temporarily fix the bent end 13 to the second cable reel 2, and until cable 5 is completely wound around the second cable reel 2 in a double-folded manner, roll the first cable reel 1 to pay out and roll the second cable reel in the reverse direction to take in. At this time, the bent end 13 of cable 5 is on the inside, and both the head and tail ends of cable 5 are on the outside.

[0020] Combining the first cable reel 1 and the second cable reel 2 to wind in a double-folded manner, with the first cable reel 1 paying out while the second cable reel 2 takes in, can greatly improve the winding speed of cable 5, is easy to operate, has relatively low requirements for the size of the operation space, and avoids the situation where the length of cable 5 is too long and they are wound around each other during winding.

[0021] Specifically, in step S3, after the first cable reel 1 pays out the cable and pulls the midpoint of the cable strand of the cable 5 so as to exceed a certain distance from the second cable reel 2, the cable 5 is swiveled at the midpoint of the cable strand to form a bent end 13 which is a cable strand ring. Specifically, step S4 is to temporarily fix the cable strand ring to the second cable reel 2.

[0022] In a specific embodiment of the present invention, marks are made along the cable strand to find the midpoint of the cable strand (corresponding to the center point of the swivel saddle), connected using a flexible traction device or a jig, the midpoint of the cable strand is pulled in a tangential direction away from the first cable reel 1 and the second cable reel 2, the midpoint of the cable strand of the cable 5 is pulled to exceed a distance of 20 to 30 times the cable strand diameter of the cable 5 from the edge of the second cable reel 2, and then swiveled at the midpoint of the cable strand of the cable 5 to form the bent end 13. The bent end 13 is a cable strand ring with a diameter of 20 times or more the cable strand diameter, preventing damage to the double-folded part due to the swiveling of the cable 5.

[0023] The cable strands of the cable 5 are wound around the first cable reel 1 by adopting a method of vertical cable winding and horizontal cable alignment.

[0024] In order to ensure the smoothness of the winding of the cable 5 when the first cable reel 1 pays out the cable and the second cable reel 2 takes in the cable, in a specific embodiment of the present invention, the first cable reel 1 and the second cable reel 2 adopt the same reel manufacturing process, which is all the traditional vertical cable winding from the inside to the outside and horizontal cable alignment method. Specifically, the rolling axes of the reel racks of the first cable reel 1 and the second cable reel 2 are in the horizontal direction, and when manufacturing, transporting and paying out the cable strands of the cable 5, they all depend on the reel rack that made the reel first.

[0025] The cable strands of the cable 5 are wound onto the first cable reel 1 by adopting a method of horizontal cable winding and vertical cable alignment.

[0026] In order to ensure the smoothness of the winding of the cable 5 when the first cable reel 1 pays out the cable and the second cable reel 2 winds up the cable, in other specific embodiments of the present invention, the first cable reel 1 and the second cable reel 2 adopt the same reel manufacturing process, and all are the traditional horizontal cable winding from the inside to the outside and vertical cable alignment method. Specifically, the rolling axes of the reel racks of the first cable reel 1 and the second cable reel 2 are in the vertical direction. After the cable 5 is wound on the reel, it disengages from the reel rack to facilitate subsequent transportation.

[0027] A cable reel of a swivel cable including a first reel rack 3, a second reel rack 4, and a spin base 6, wherein the first reel rack 3 is provided on the spin base 6 and rolls along with the rotation of the spin base 6. The axial direction of the first reel rack 3 is parallel to the rolling axis direction of the spin base 6. The second reel rack 4 is used to temporarily fix the cable strand ring after the cable 5 is folded in half. The first reel rack 3 is used to wind up the cable strands of the cable 5 after it is folded in half. A cable reel of a swivel cable.

[0028] In a specific embodiment of the present invention, the second cable reel 2 includes a first reel rack 3, a second reel rack 4, and a spin base 6. The distance between the first reel rack 3 and the second reel rack 4 is 20 to 30 times the diameter of the cable strands of the cable 5. The spin base 6 is placed horizontally, and the rolling axis is in the vertical direction. Both the first reel rack 3 and the second reel rack 4 have a tapered cylindrical structure that is smaller at the top and larger at the bottom. The first reel rack 3 is provided on the spin base 6 and rolls around the vertical rolling axis together with the spin base 6. The cable strand ring after being folded in two is externally inserted into the outer circumference of the second reel rack 4. The tapered cylindrical structure of the second reel rack 4 forms a rigid support for the inside of the cable strand ring of the cable, ensuring the stability of the cable strand ring shape of the cable 5 after being folded in two and preventing damage to the folded part of the cable strands of the cable 5.

[0029] In another embodiment of the present invention, the spin base 6 is placed vertically, the rolling axis is in the horizontal direction, and the first reel rack 3 and the second reel rack 4 have a cylindrical structure that is placed horizontally.

[0030] In another embodiment of the present invention, the second reel rack 4 is semi-hexagonal or semi-circular that can be processed to substantially match the outer shape of the contact part of the cable strand ring.

[0031] When actually used, before winding the cable strands of the cable 5 onto the second cable reel 2, the first cable reel 1 and the second cable reel 2 are located on the same side of the cable strands of the cable 5, and the entire second cable reel 2 is located at the midpoint position of the cable 5. They are connected using a flexible traction device or jig, and the midpoint of the cable strands is pulled in the tangential direction away from the first cable reel 1 and the second cable reel 2. After pulling the midpoint of the cable strands of the cable 5 more than 20 to 30 times the diameter of the cable strands of the cable 5 from the edge of the first cable reel 3 and reaching the edge of the second reel rack 4, it turns to form the bent end 13. At this time, the bent end 13 is inserted outside the outer circumference of the second reel rack 4. Before the cable strands of the two cables 5 formed by turning and folding are wound onto the first reel rack 3, they are located on the same side of the first reel rack 3.

[0032] The second reel rack 4 is provided on the spin base 6 and rolls along with the rotation of the spin base 6.

[0033] The first reel rack 3 and the second reel rack 4 are provided at different positions on the spin base 6. The axial directions of the first reel rack 3 and the second reel rack 4 are parallel to the rolling axis direction of the spin base 6, and the length along the axial direction of the second reel rack 4 is smaller than the length along the axial direction of the first reel rack 3.

[0034] In a specific embodiment of the present invention, the cross-sections of the first reel rack 3 and the second reel rack 4 are tapered cylindrical structures with the same dimensions. The spin base 6 is coaxially provided with a support disk 12. The first reel rack 3 and the second reel rack 4 are provided in parallel on the support disk 12. The inner diameter of the maximum end cross-section of both is 25 times the diameter of the cable strands, and the wall thickness is 0.2 m. However, the length along the axial direction of the second reel rack 4 is smaller than the length along the axial direction of the first reel rack 3 to avoid affecting the winding operation of the first reel rack 3 while satisfying the temporary extrapolation of the bent end 13.

[0035] After the bent end 13 formed by turning and doubling the cable strands of the cable 5 is inserted into the second reel rack 4, the reel creation operation of the first reel rack 3 is performed. Specifically, the method of horizontal cable winding from the inside to the outside and vertical cable alignment as shown in FIG. 6 is adopted. After the reel is created, the bent end 13 of the cable strands of the cable 5 is wound to the innermost side, and both the head and tail ends of the cable strands of the cable 5 are located on the outermost side.

[0036] The second reel rack 4 and the first reel rack 3 are provided coaxially.

[0037] In a specific embodiment of the present invention, the first reel rack 3, the second reel rack 4, and the spin base 6 are provided coaxially, and the second reel rack 4 is located above the first reel rack 3. The length along the axial direction of the second reel rack 4 may be smaller than the length along the axial direction of the first reel rack 3 as long as the requirement for the insertion of the bent end 13 can be satisfied.

[0038] After the bent end 13 formed by turning and doubling the cable strands of the cable 5 is inserted into the second reel rack 4, the reel creation operation of the first reel rack 3 is performed downward.

[0039] In another embodiment of the present invention, the first reel rack 3 and the second reel rack 4 are provided coaxially and are located on one side of the spin base 6.

[0040] The second reel rack 4 is provided with a retaining structure 7, and the spin base 6 is provided with a temporary fixing structure 8.

[0041] In a specific embodiment of the present invention, in order to prevent the bent end 13 of the cable strand of the cable 5 from falling off the second reel rack 4, a retaining structure 7 is uniformly provided in the circumferential direction of the second reel rack 4. Specifically, the retaining structure 7 is a limit lever, and a temporary fixing device is provided on the spin base 6. The temporary fixing device is specifically a limit engaging member composed of a screw 11 and a platen 10. The cable strand of the cable 5 passes through the limit engaging member, turns at the location of the second reel rack 4 and is folded in half, then passes through another limit engaging member, further firmly fixes the bent end 13 to the second reel rack 4, and turns the cable strand of the cable 5 folded in half to the same side of the first reel rack 3.

Explanation of Reference Numerals

[0042] 1 First cable reel 2 Second cable reel 3 First reel rack 4 Second reel rack 5 Cable 6 Spin base 7 Retaining structure 8 Temporary fixing structure 9 Swivel anchor structure 10 Platen 11 Screw 12 Support disk 13 Bent end

Claims

1. A method for making a reel of a revolving cable for use in a revolving cable suspension bridge, comprising: Step S1: winding a length of cable onto a first cable reel using a normal winding method in which the head of the cable strand of the cable is on the inside and the tail is on the outside; Step S2 of positioning a second cable reel at the midpoint of the cable strand of the cable when winding the cable around the midpoint of the cable strand; Step S3 of turning the cable at the midpoint of the cable strand to form a bent end; A step S4 of temporarily fixing the bent end to a second cable reel; and step S5 of releasing the first cable reel and retracting the second cable reel until the cable is completely folded in half and wound around the second cable reel, Specifically, step S3 is to release the first cable reel and pull the midpoint of the cable strand of the cable so that the midpoint exceeds a certain distance relative to the second cable reel, and then rotate the cable at the midpoint of the cable strand to form a bent end, which is a cable strand loop; Specifically, step S4 is to temporarily fix the cable strand ring to a second cable reel; the second cable reel includes a first reel rack, a second reel rack, and a spin base, the first reel rack being provided on the spin base and rolling with the rotation of the spin base, the second reel rack being provided on the spin base and rolling with the rotation of the spin base, an axial direction of the first reel rack is parallel to a rolling axis direction of the spin base; an axial direction of the second reel rack is parallel to a rolling axis direction of the spin base; the second reel rack forms a rigid support for the inside of the cable strand ring of the cable and is used to temporarily fix the cable strand ring after the cable is folded in half; the first reel rack is used to wind up a cable strand of the cable after it has been folded in half; The second reel rack is provided with a slip-out prevention structure, and the spin base is provided with a temporary fixing structure. A method for making a reel for a rotating cable.

2. The cable strand of the cable is wound on a first cable reel by adopting a vertical cable winding and horizontal cable alignment mode; 2. The method for producing a reel of a rotating cable according to claim 1.

3. The cable strand of the cable is wound on a first cable reel by adopting a horizontal cable winding and vertical cable alignment mode; 2. The method for producing a reel of a rotating cable according to claim 1.

4. the second reel rack is provided on the spin base and rolls with the rotation of the spin base; the first reel rack and the second reel rack are provided at different positions on a spin base, the axial directions of the first reel rack and the second reel rack are parallel to a rolling axial direction of the spin base, and the length of the second reel rack along the axial direction is shorter than the length of the first reel rack along the axial direction; 2. The method for producing a reel of a rotating cable according to claim 1.

5. 2. The method for producing a reel for a swivel cable according to claim 1, wherein the second reel rack and the first reel rack are provided coaxially.

Images