Suspender bridge cable strand connection device and method of use

Abstract

The present application relates to a kind of suspension bridge cable connecting device and method for using, comprising: force component and external protection box, external protection box is wrapped in two force component outside, cable respectively from two sides and enter the anchoring of force component in external protection box;Including steps: anchorage cable and main cable cable are respectively connected with anchor head by the cable hole of the anchor beam of two force component;Two force component moves along the axis direction of cable, until mutually extruding again separation, re-bounce;Install external protection box;Tension main cable cable, so that two rotatable force block mutually hook up.The beneficial effects of the present application are: the rotatable force block of the present application can rotate around the shaft, can adapt to the change of cable load to some extent, avoid the fatigue damage caused by stress change in application process;The connection and fixation of two sides force component are realized by the cooperation of rotatable force block and telescopic support rod, the provided device is simple to install, easy to operate.

Description

Technical Field

[0001] This invention belongs to the field of suspension bridge anchoring systems, and particularly relates to a suspension bridge cable strand connection device and its usage method. Background Technology

[0002] During the construction of a suspension bridge, the main cable is erected only after the foundation, anchorages, main tower, and catwalk are completed. This means that the anchorages and main cables need to be connected by a cable strand connection structure to transfer the load.

[0003] Traditional cable-strand connection structures mainly include two types: H-shaped cable-strand connection and shoe-shaped cable-strand connection. Both transmit force through steel tie rods connected to the anchor plate, which can lead to localized weak points in the anchor plate. Furthermore, the stress in the main cable can change during actual engineering projects, making the cable-strand connection components prone to fatigue damage over long-term use. Secondly, traditional H-shaped and shoe-shaped cable-strand connection structures are relatively cumbersome to install, requiring significant time and effort.

[0004] Therefore, there is an urgent need for a new suspension bridge cable strand connection device and its usage method to overcome the above-mentioned shortcomings. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a suspension bridge cable strand connection device and its usage method.

[0006] This suspension bridge cable strand connection device includes: force transmission components and an outer protective box. The outer protective box is wrapped around two force transmission components, and the cable strands extend from both sides through the outer protective box and into the force transmission components for anchoring.

[0007] The force transmission component includes a rotatable force transmission block, a limiting upper beam, an anchor beam, a support column, and an outer cover plate. The limiting upper beam, anchor beam, support column, and outer cover plate are an integral structure. The support column is perpendicularly connected to the anchor beam, and the support column is also connected to a support column side cover plate. The support column side cover plate and the outer cover plate are located on the same side of the anchor beam, and the outer wall of the support column side cover plate is flush with the inner wall of the outer cover plate. The limiting upper beam is located on the side of the support column side cover plate away from the anchor beam. One end of the rotatable force transmission block is rotatably connected to the support column side cover plate via a connecting shaft, and the other end extends from the range of the support column side cover plate into the range of the outer cover plate. A telescopic support rod is provided between the rotatable force transmission block and the support column, and a spring is provided inside the telescopic support rod. The two force transmission components are symmetrically coordinated to form an integral structure. One end of the support column side cover plate with the limiting upper beam is inserted between the outer cover plates of the other force transmission component. One side of the two rotatable force transmission blocks is in contact with each other, and the other side is in contact with the limiting upper beam.

[0008] The outer casing includes an upper outer casing, a lower outer casing, and a fixing nut; both the upper and lower outer casings have semi-circular protrusions on both sides. When the upper and lower outer casings are closed, the semi-circular protrusions on both sides combine to form a cylindrical protrusion, and the fixing nut is fixed at the cylindrical protrusion.

[0009] Preferably, the upper outer sleeve has a protrusion and the lower outer sleeve has a groove. The upper and lower outer sleeves are joined together by the protrusion and the groove to form an outer protective box. The internal dimensions of the outer protective box match the dimensions of the overall structure formed by the two force transmission components. The outer surface of the cylindrical protrusion is provided with threads that mate with the fixing nut.

[0010] As a preferred embodiment, a strand hole is provided in the middle of the anchor beam, through which the strands extend into the force transmission component and are anchored. The two strands connected on both sides of the suspension bridge strand connection device are the anchor body anchor cable and the main cable strand, respectively.

[0011] As a preferred embodiment, each force transmission component is a symmetrical structure with the horizontal plane as the plane of symmetry, that is, each force transmission component has an outer cover plate and a support side cover plate on its upper and lower surfaces, and the upper and lower surfaces of the rotatable force transmission block are connected to a telescopic support rod.

[0012] Preferably, the length of the support is greater than the sum of the lengths of the two rotatable force transmission blocks; when the two force transmission components are connected to each other and the two rotatable force transmission blocks are attached together, the ends of the two outer cover plates are a certain distance apart in the axial direction of the cable strand.

[0013] The method of using this suspension bridge cable strand connection device includes the following steps:

[0014] Step 1: Pre-fit the fixing nuts of the external protective box onto the anchor body, anchor cable and main cable strand respectively, and connect them to the anchor head through the cable strand holes of the anchor beams of the two force transmission components;

[0015] Step 2: Fix the force transmission component at the anchor body end and insert the force transmission component at the main cable end into the force transmission component at the anchor body end. The two force transmission components move towards each other along the axial direction of the cable strand. The rotatable force transmission blocks in the two force transmission components are squeezed and turned towards the support by the limiting upper beam in the other force transmission component until the limiting upper beam passes the highest point of the rotatable force transmission block. The two rotatable force transmission blocks come into contact with each other and continue to move towards each other. The two rotatable force transmission blocks squeeze each other to keep each other close to the support until the rotatable force transmission blocks separate. At this time, the two rotatable force transmission blocks begin to extend under the elastic force of the telescopic support rod.

[0016] Step 3: Install the external protective box. The integral structure formed by the two cooperating force transmission components is sandwiched in the upper and lower outer sleeves. The groove of the lower outer sleeve and the protrusion of the upper outer sleeve are interlocked and fixed with the fixing nut to complete the installation of the suspension bridge cable strand connection device.

[0017] Step 4: Tension the main cable strands so that the two transferable force blocks hook together.

[0018] As a preferred method: When replacing the cable strands, first loosen the cable strands, remove the fixing nuts, then separate the upper and lower outer sleeves, move the two force transmission components relative to each other to separate the two rotatable force transmission blocks, and ensure that the distance between the ends of the two outer cover plates in the direction of the cable strand axis is greater than or equal to the distance between them. Pull the two force transmission components away from each other along the vertical axis direction to open the suspension bridge cable strand connection device. After removing the cable strand to be replaced, repeat steps one to four to complete the cable strand replacement.

[0019] The beneficial effects of this invention are:

[0020] 1) The rotatable force block of this invention can rotate around an axis, which can adapt to changes in cable load to a certain extent and avoid fatigue damage caused by stress changes during application.

[0021] 2) The anchor beam of the present invention only has holes for cable strands to pass through for anchoring, thus avoiding the reduction of tensile strength due to excessive drilling.

[0022] 3) The present invention achieves the connection and fixation of the force transmission components on both sides through the cooperation of the rotatable force transmission block and the telescopic support rod. The device provided is simple to install, easy to operate, and saves manpower and material resources. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the two force-transmitting components after they have been connected.

[0024] Figure 2 This is a cross-sectional structural diagram of a single force-transmitting component;

[0025] Figure 3 This is a schematic diagram showing the two force-transmitting components before they are connected.

[0026] Figure 4 This is a schematic diagram showing the initial connection of two force-transmitting components.

[0027] Figure 5 A schematic diagram showing the further connection of two force-transmitting components;

[0028] Figure 6 A schematic diagram of drilling cable strand holes on the anchor beam;

[0029] Figure 7 This is an external schematic diagram of the two force-transmitting components after they have been connected.

[0030] Figure 8 A schematic diagram of the upper outer sleeve of the cable strand connection device for a suspension bridge;

[0031] Figure 9A diagram showing the lower outer sleeve and fixing nut of the cable strand connection device for a suspension bridge;

[0032] Figure 10 This is a side view of the external protective box of the suspension bridge cable strand connection device after it has been closed.

[0033] Explanation of reference numerals in the attached diagram: 1. Rotatable force transmission block; 2. Telescopic support rod; 3. Limiting upper beam; 4. Support column; 5. Anchor beam; 6. Connecting shaft; 7. Outer cover plate; 8. Upper outer sleeve; 9. Lower outer sleeve; 10. Fixing nut; 11. Cable strand. Detailed Implementation

[0034] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that those skilled in the art can make several modifications to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0035] Example 1

[0036] As one example, such as Figures 1 to 10 As shown, this suspension bridge cable strand connection device includes: force transmission components and an outer protective box. The outer protective box is wrapped around two force transmission components, and the cable strands 11 extend from both sides through the outer protective box and into the force transmission components for anchoring.

[0037] like Figure 1 and Figure 7 As shown, the force transmission component includes a rotatable force transmission block 1, a limiting upper beam 3, an anchor beam 5, a support column 4, and an outer cover plate 7. The limiting upper beam 3, anchor beam 5, support column 4, and outer cover plate 7 are an integral structure. The support column 4 is perpendicularly connected to the anchor beam 5. The support column 4 is also connected to a support column side cover plate. The support column side cover plate and the outer cover plate 7 are located on the same side of the anchor beam 5, and the support column side cover plate and the outer cover plate 7 are separated by the axis of the cable strand 11. The outer wall of the support column side cover plate and the inner wall of the outer cover plate 7 are flush. That is, the two force transmission structures can be fitted together by the support column side cover plate and the outer cover plate 7 to prevent the cable strand 11 and the force transmission component from moving up and down. The limiting upper beam 3 is located on the side of the support column side cover plate away from the anchor beam 5. The anchor beam 5 has a cable strand hole in the middle. The cable strand 11 extends into the force transmission component through the cable strand hole and is anchored, avoiding the problem of weak stress areas caused by opening multiple holes in the anchor beam 5. The two strands 11 connected on both sides of the suspension bridge cable strand connection device are the anchor cable of the anchor body and the main cable strand, respectively.

[0038] like Figure 1 and Figure 2As shown, one end of the rotatable force transmission block 1 is rotatably connected to the support side cover plate via the connecting shaft 6, and the other end extends from the range of the support side cover plate into the range of the outer cover plate 7. A telescopic support rod 2 is provided between the rotatable force transmission block 1 and the support 4. A spring is provided inside the telescopic support rod 2. When there is no external force, the telescopic support rod 2 is in an extended state, so that the rotatable force transmission block 1 extends to the limit upper beam 3. This can achieve the purpose of automatically popping out and connecting with each other to transmit force after the two force transmission components are interlocked.

[0039] Each force transmission component is a symmetrical structure with the horizontal plane as the plane of symmetry. That is, each force transmission component has an outer cover plate 7 and a support side cover plate on its upper and lower surfaces, and the upper and lower surfaces of the rotatable force transmission block 1 are connected to a telescopic support rod 2.

[0040] like Figures 2 to 5 and Figure 7 As shown, two force-transmitting components are symmetrically arranged to form an integral structure. At this point, one end of the limiting upper beam 3 on the side cover plate of the support column is inserted between the outer cover plate 7 of the other force-transmitting component. One side of the two rotatable force-transmitting blocks 1 is in contact with each other, and the other side contacts the limiting upper beam 3 respectively. When the strands 11 on both sides are tensioned, because the two rotatable force-transmitting blocks 1 are in contact with each other and constrained by the limiting upper beam 3, the two rotatable force-transmitting blocks 1 will form a connection similar to interlocking, allowing force transmission even without direct connection between the strands 11 on both sides. The length of the support column 4 is greater than the sum of the lengths of the two rotatable force-transmitting blocks 1, ensuring sufficient internal space when the two force-transmitting components are inserted together, allowing the two rotatable force-transmitting blocks 1 to separate and rotate out. The ends of the rotatable force transmission block 1 are arc-shaped. When the two rotatable force transmission blocks 1 are connected, they are centrally symmetrical, similar to the Tai Chi pattern. When the two force transmission components are connected to each other and the two rotatable force transmission blocks 1 are attached together, there is a certain distance between the end planes of the two outer cover plates 7 and the axial direction of the cable strand 11. When disassembly is required, the two force transmission components can be inserted further inward to separate the two rotatable force transmission blocks 1, while keeping the ends of the two outer cover plates 7 still not tangent. At this time, the two force transmission components can be pulled apart in the direction perpendicular to the axis of the cable strand 11 to achieve disassembly.

[0041] When the load on the cable strand 11 decreases, the two rotatable force transmission blocks 1 tend to separate, but they do not actually separate. The existence of the connecting shaft 6 satisfies the requirement for the rotatable force transmission blocks 1 to rotate around the shaft, while the telescopic support rod 2 also plays a buffering role, which greatly reduces the impact of load changes on the cable strand connection device of the suspension bridge, avoids fatigue damage to the force transmission components due to load changes, and improves the service life of the device.

[0042] like Figures 8 to 10As shown, the outer casing includes an upper outer casing 8, a lower outer casing 9, and a fixing nut 10. The upper outer casing 8 has a protrusion, and the lower outer casing 9 has a groove. Both sides of the upper outer casing 8 and the lower outer casing 9 have semi-circular annular protrusions. The upper outer casing 8 and the lower outer casing 9 are joined together by the protrusions and grooves to form an outer protective box. After the upper outer casing 8 and the lower outer casing 9 are joined together, the semi-circular annular protrusions on both sides combine to form a cylindrical protrusion. The outer surface of the cylindrical protrusion has threads that mate with the fixing nut 10. The fixing nut 10 is fixed at the cylindrical protrusion.

[0043] The internal dimensions of the outer protective box match the dimensions of the overall structure formed by the cooperation of the two force transmission components, which can protect the main component from external damage and effectively prevent the main component from falling off.

[0044] Example 2

[0045] As another embodiment, the method of using the suspension bridge cable strand connection device proposed in Embodiment 1 includes the following steps:

[0046] Step 1: Pre-fit the fixing nuts 10 of the external protective box onto the anchor cable and the main cable strand, and connect the two parts to the anchor head of the cable strand 11 through the cable strand holes of the anchor beams 5 of the two force transmission components.

[0047] Step 2: Fix the force transmission component at the anchor body end, and insert the force transmission component at the main cable end into the force transmission component at the anchor body end. Specifically, the ends of the two force transmission components with limiting upper beams 3 are inserted together, and they move towards each other along the axial direction of the cable strand 11, so that one end of the support side cover plate with the limiting upper beam 3 is inserted between the outer cover plate 7 of the other force transmission component; first as... Figure 4 As shown, the rotatable force-transmitting block 1 within the two force-transmitting components is compressed by the limiting upper beam 3 within the other force-transmitting component, pushing against the steering column 4 until the limiting upper beam 3 passes over the highest point of the rotatable force-transmitting block 1; as Figure 5 As shown, the two rotatable force transmission blocks 1 begin to contact each other and continue to move towards each other. The rotatable force transmission blocks 1 of the two force transmission components squeeze each other to keep the other close to the support column 4 until the two rotatable force transmission blocks 1 completely intersect and separate. At this time, the two rotatable force transmission blocks 1 begin to extend under the elastic force of the telescopic support rod 2.

[0048] Step 3: Install the external protective box. The integral structure formed by the two mutually cooperating force transmission components is sandwiched in the upper external box 8 and the lower external box 9. The groove of the lower external box 9 and the protrusion of the upper external box 8 are fitted together. The fixing nut 10 is screwed onto the cylindrical protrusions formed on both sides after the upper external box 8 and the lower external box 9 are closed to fix them, thus completing the installation of the suspension bridge cable strand connection device.

[0049] Step 4: Tension the main cable strands so that the two transferable force blocks 1 inside the device hook together, forming a... Figure 1 The connection shown enables force transmission.

[0050] When it is necessary to replace cable strand 11, first loosen cable strand 11, remove the fixing nut 10, then separate the upper outer sleeve 8 and the lower outer sleeve 9, and slightly squeeze the two force transmission components inward to properly separate the two rotatable force transmission blocks 1, so that the two rotatable force transmission blocks 1 are separated and the distance between the ends of the two outer cover plates 7 in the direction of the cable strand 11 axis is still greater than or equal to 0. Then pull the two force transmission components away from each other in the direction perpendicular to the cable strand 11 axis to open the suspension bridge cable strand connection device. After removing the cable strand 11 that needs to be replaced, repeat steps one to four to complete the replacement of cable strand 11.

Claims

1. A suspension bridge cable strand connector, characterized by, The utility model relates to a suspension bridge cable connecting device, including: The force transmission component and the external protection box, the external protection box is wrapped in two force transmission components outside, the cable (11) respectively from two sides penetrates the external protection box and extends into the force transmission component and anchors; The force transmission component includes rotatable force transmission block (1), limiting upper beam (3), anchor beam (5), support (4) and external cover plate (7), wherein limiting upper beam (3), anchor beam (5), support (4) and external cover plate (7) are integrated structure, support (4) is connected with anchor beam (5) perpendicularly, support (4) is also connected with support side cover plate, the support side cover plate is located with external cover plate (7) in the same side of anchor beam (5), and the outer wall of support side cover plate and the inner wall of external cover plate (7) are flush;Limiting upper beam (3) is located in the side of support side cover plate away from anchor beam (5);Rotatable force transmission block (1) one end is connected with support side cover plate through connecting shaft (6), and the other end extends into the range of external cover plate (7) from the range of support side cover plate, and rotatable force transmission block (1) and support (4) are equipped with telescopic support rod (2) between, and telescopic support rod (2) is equipped with spring in;Two force transmission components are centrally symmetric and mutually cooperate to form integrated structure, and one end of limiting upper beam (3) of support side cover plate is inserted between the external cover plate (7) of another force transmission component, and one side of two rotatable force transmission blocks (1) is mutually adhered, and the other side respectively contacts limiting upper beam (3); The external sleeve box includes upper external sleeve box (8), lower external sleeve box (9) and fixed nut (10);Both sides of upper external sleeve box (8) and lower external sleeve box (9) are provided with semicircular ring protrusions, and the semicircular ring protrusions on both sides of upper external sleeve box (8) and lower external sleeve box (9) are combined to form a cylindrical protrusion after being folded, and the fixed nut (10) is fixed at the cylindrical protrusion.

2. The suspension bridge cable strand connector of claim 1, wherein: Upper external sleeve box (8) is provided with a protrusion, and lower external sleeve box (9) is provided with a groove, and upper external sleeve box (8) and lower external sleeve box (9) are folded to form an external protection box by cooperating with the protrusion and the groove, and the internal dimensions of the external protection box match the dimensions of the integrated structure formed by the cooperation of the two force transmission components;The outer surface of the cylindrical protrusion is provided with threads matched with the fixed nut (10).

3. The suspension bridge cable strand connector of Claim 1, wherein: The anchor beam (5) is provided with a cable hole in the middle, and the cable (11) extends into the force transmission component through the cable hole and is anchored, and the two cables (11) connected on both sides of the suspension bridge cable connecting device are respectively anchor cable and main cable.

4. The suspension bridge cable strand connector of Claim 1, wherein: Each force transmission component is a symmetric structure with a horizontal plane as the plane of symmetry, that is, each force transmission component is provided with an external cover plate (7) and a support side cover plate on its upper and lower surfaces, and each rotatable force transmission block (1) is connected with a telescopic support rod (2) on its upper and lower surfaces.

5. The suspension bridge cable strand connector of Claim 1, wherein: The length of the support (4) is greater than the sum of the lengths of the two rotatable force transmission blocks (1);When the two force transmission components are connected with each other and the two rotatable force transmission blocks (1) are adhered together, the end portions of the two external cover plates (7) are at a certain distance in the axial direction of the cable (11).

6. The method of using a suspension bridge cable strand connector as defined in any one of claims 1 to 5, wherein, The utility model relates to a suspension bridge cable connecting device, including: Step one, the anchor cable and the main cable are respectively pre-sleeved with the fixed nut (10) of the external protection box, and are connected with the anchor head through the cable hole of the anchor beam (5) of the two force transmission components respectively; Step two, fixed force transmission component end of the anchorage body, and the main cable end force transmission component to the force transmission component end of the anchorage body inserted, two force transmission component along the axis direction of the strand (11) to each other, two force transmission component within the turn force block (1) is extruded by another force transmission component within the limit of the upper beam (3) to the pillar (4), until the limit of the upper beam (3) sweepable turn force block (1), two turn force block (1) contact each other, and continue to move towards each other, two force transmission component turn force block (1) extrusion each other to keep the other close to the pillar (4) state, until two turn force block (1) is separated, at this time two turn force block (1) starts to stretch out under the action of the elastic force of the telescopic support rod (2); Step three, install the external protection box, the two force transmission component formed by the overall structure is clamped in the upper external sleeve box (8) and the lower external sleeve box (9), the recess of the lower external sleeve box (9) and the convex of the upper external sleeve box (8) are embedded with each other, and fixed by the fixed nut (10), the installation of the suspension bridge strand connecting device is completed; Step four, tension the main cable strand, so that two turn force block (1) hook each other.

7. The method of using a suspension bridge cable strand connector as defined in claim 6, wherein: When replacing the strand (11), first relax the strand (11), remove the fixed nut (10), then separate the upper external sleeve box (8) and the lower external sleeve box (9), move the two force transmission components relative to each other, so that two turn force block (1) is separated, and the distance between the end of the two external cover plates (7) in the axial direction of the strand (11) is greater than or equal to 0, pull the two force transmission components away from each other along the direction perpendicular to the axis of the strand (11), that is, open the suspension bridge strand connecting device, remove the strand (11) to be replaced, and then perform steps one to four again, so as to complete the replacement of the strand (11).

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