Stay cable pulling installation device

Abstract

The application provides a stay cable traction installation device, which comprises a support assembly, a first rotating assembly, a driving assembly and a soft traction steel strand. The support assembly comprises a first end and a second end arranged oppositely. The first rotating assembly is arranged at the second end of the support assembly. The driving assembly is rotationally connected to the first rotating assembly and is configured to rotate relative to the first rotating assembly after being driven. The connecting end of the soft traction steel strand is used for connecting an anchor cup connected with the stay cable oppositely, and the free end of the soft traction steel strand sequentially passes through the first end, the second end, the first rotating assembly and the through hole of the driving assembly along the central axis. The driving assembly further comprises a first anchor piece used for clamping a node of the free end, and the soft traction steel strand is tractioned through the transmission of the first anchor piece. The first end is provided with an elastic pad. The elastic pad comprises an elastic supporting part attached to the outer surface of the first end and a collision prevention part arranged on the inner wall of the through hole of the first end. The stay cable traction installation device is provided with the structure, the traction risk of the stay cable is reduced, and the installation reliability of the stay cable is improved.

Description

Technical Field

[0001] This application relates to the field of cable-stayed bridge traction construction technology, and more specifically, to a cable-stayed bridge traction installation device. Background Technology

[0002] A cable-stayed bridge is a type of bridge in which the main girder is directly attached to the bridge towers by a number of cables. It is a structural system composed of pressure-bearing towers, tension-bearing cables, and bending-bearing girder.

[0003] The two ends of the stay cables of a cable-stayed bridge are fixed to the tower and the beam respectively by anchorage. The installation process includes: hoisting one end of the stay cable to the anchorage point of the tower, and then, under the anchorage of the tower, traction to fix the other end of the stay cable to the anchorage point of the main beam. In the existing technology, jacks are used in conjunction with support seats to tension the stay cables to complete the installation. Since the jacks are fixed to the support seats, and the support seats are used to bear the tension loads of the traction cables and stay cables respectively, the stay cables or traction cables often have a certain rotational stress due to the influence of manufacturing process or transportation methods. This causes the stay cables or traction cables to rotate during the traction process due to the release of rotational stress. This will result in rotational force between the jacks and the support seats or between the jacks and the traction cables, which may damage the jacks or break the traction cables. Utility Model Content

[0004] This application addresses the shortcomings of existing methods by proposing a cable-stayed bridge traction installation device to solve the technical problem that the rotation of the cable-stayed bridge or traction cable during the traction process may damage the jack or break the traction cable.

[0005] This application provides a cable-stayed bridge traction installation device, characterized in that it includes: A support component, comprising a first end and a second end that are positioned relative to each other; A first rotating component is disposed at the second end of the support component; A drive component, connected to the first rotating component, is configured to rotate relative to the first rotating component when driven; The soft traction steel strand has its connecting end used to connect to the anchor cup with the inclined cable connected in opposite directions, and its free end passes through the first end, the second end, the first rotating component and the drive component in sequence through the through hole opened outward along the central axis. The drive assembly further includes a first anchor for clamping a node at the free end, and for pulling the soft traction steel strand through the transmission of the first anchor; An elastic pad is provided at the first end; The elastic pad includes a support portion that fits against the outer surface of the first end and an anti-collision portion disposed on the inner wall of the through hole at the first end.

[0006] Specifically, the main technical concept of this application lies in the arrangement of a first rotating component between the support component and the drive component, allowing the drive component to rotate relative to the support component. This allows the drive component to rotate along with the soft traction steel strand when the first anchor clamps the free end of the drive component to pull the soft traction steel strand. As the soft traction steel strand releases its rotational stress, the drive component can release the rotational force of the soft traction steel strand, reducing safety risks during the installation of the cable-stayed bridge. Simultaneously, this application also uses an elastic pad at the first end to reduce rigid contact between the first end and the outside, providing contact buffering and ensuring the reliability of the first end. The elastic pad includes an anti-collision part fitted inside the through hole at the first end to prevent rigid collision between the anchor cup and the first end during traction, ensuring the safety of the anchor cup installation.

[0007] Furthermore, the drive assembly also includes a drive element and a second anchor element; The first anchor and the second anchor are respectively disposed at both ends of the driving member, and the second anchor is disposed close to the first rotating assembly; The driving element is configured to drive the first anchor element.

[0008] Specifically, another technical concept of this application is that, by setting the second anchor, after the drive member drives the first anchor to its maximum stroke, the soft traction steel strand can be temporarily clamped by the second anchor, thereby resetting the first anchor and the drive member. By alternately clamping the soft traction steel strand by the first anchor and the second anchor, the drive member can achieve long-distance traction of the cable-stayed cable, effectively increasing the traction length and reducing the configuration cost of the drive member.

[0009] Furthermore, the first anchor and the second anchor include either a clip or a sleeve.

[0010] In some possible embodiments, the driving element includes either a mechanical jack or a hydraulic jack.

[0011] In some possible embodiments, the first rotating assembly includes a first bearing and a support. The support includes a base attached to the second end and a housing for accommodating the first bearing; The drive component includes a rotating shaft extending toward the support assembly for axially fixing the first bearing.

[0012] Furthermore, the cable-stayed traction installation device also includes a second rotating component disposed between the connecting end and the anchor cup.

[0013] Specifically, another technical concept of this application is to adjust the stress state of the soft traction steel strand through the second rotating component, thereby further reducing the traction safety risk of the stay cable.

[0014] Furthermore, the second rotating assembly includes an anchor pin, a rotating seat, and a second bearing; The rotating base is configured as a cylindrical structure with mounting holes at the bottom; The second bearing is housed at the bottom of the rotating seat; The anchor bolt passes through the second bearing and is connected to the anchor cup; The connecting end is connected to the top of the rotating base.

[0015] Specifically, another technical concept of this application is that the connecting end can rotate relative to the anchor cup by configuring the rotating seat.

[0016] In some possible embodiments, the flexible traction steel strand is configured as multiple strands, and the free end is provided with a branching member for guiding the installation of the flexible traction steel strand.

[0017] Specifically, another technical concept of this application is to guide the threading of multiple soft traction steel strands through a splitter, thereby avoiding the tangling of the drive assembly at the lower end of the beam caused by the installation at the upper end of the connecting beam, and improving the reliability of the soft traction steel strand traction.

[0018] Furthermore, each strand of the soft traction steel strand is evenly spaced with flush markings to indicate the stress state of each strand.

[0019] Specifically, another technical concept of this application is that the flush mark can indicate the stress state of each strand of the soft traction steel strand, so that when any strand of the soft traction steel strand is subjected to uneven stress, the flush mark can provide a timely warning and adjust the traction state of the cable in a timely manner, thereby improving reliability.

[0020] In some possible embodiments, the connecting end is configured as a connecting plate with positioning holes; The end of the soft traction steel strand is configured with a P-anchor for insertion into the positioning hole.

[0021] The beneficial technical effects of the technical solutions provided in this application include: During the installation of the stay cable, the connecting end of the soft traction steel strand is connected to the anchor cup, which contains the stay cable. The stay cable can be further pulled by driving the soft traction steel strand. Because a first rotating component is configured between the support assembly and the drive assembly, this component allows for relative rotation between the drive assembly and the support assembly. During the tensioning of the soft traction steel strand by the drive assembly, if the stay cable releases rotational stress, causing the soft traction steel strand to rotate, or if the soft traction steel strand releases rotational stress and begins to rotate on its own, the soft traction steel strand will drive the drive assembly that is tensioning it to rotate. At this time, the first rotating component can rotate relative to the support assembly, thereby dissipating the rotational force between the drive assembly and the support assembly, allowing the drive assembly to rotate relative to the support assembly and preventing the soft traction steel strand from twisting. Simultaneously, the support portion of the elastic pad provides elastic support between the first end and the outside, reducing the risk of wear at the first end. Its anti-collision portion prevents rigid collisions between the anchor cup and the through-hole on the inner wall of the first end, ensuring the traction safety of the anchor cup. In addition, flushing marks are installed on the flexible traction steel strands. These marks indicate the traction status of each strand when multiple strands of the flexible traction steel strand are used to pull the stay cable. Since different flexible traction steel strands may have varying degrees of rotational stress release, if the rotational degree of any strand exceeds that of the others, it may cause excessive rotational force on that strand, leading to breakage. The function of the flushing marks is that when the rotational degree of any strand exceeds that of the others, its flushing mark will shift relative to the flushing marks of the other strands. This shift in the flushing mark reflects the traction stress state of each strand, allowing for timely cessation of stay cable traction based on the stress state, thus reducing the risk of strand breakage. The second rotating assembly is located between the connecting end of the soft traction steel strand and the anchor cup. When the soft traction steel strand rotates excessively, the anchor cup is anchored by the anchor to restrict the axial degree of freedom of the soft traction steel strand. The first and second anchors are configured to be in a released state, so that the free end of the soft traction steel strand is in a relaxed state. Then, the rotation of the soft traction steel strand drives the second rotating assembly to rotate, thereby balancing the stress state of the soft traction steel strand, solving the problem of uniform stress of the soft traction steel strand, and reducing the risk of breakage caused by uneven stress.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1This is a schematic diagram of the structure of a cable-stayed bridge traction installation device provided in one embodiment of this application; Figure 2 This is a schematic diagram of the structure of a cable-stayed bridge traction installation device provided in another embodiment of this application; Figure 3 Provided for the embodiments of this application Figure 2 Enlarged view of point A; Figure 4 Provided for the embodiments of this application Figure 2 Enlarged view of point B; 1. Stay cable; 2. Flexible traction steel strand; 3. Drive assembly; 4. Support assembly; 5. Anchor cup; 6. First rotating assembly; 7. Second rotating assembly; 8. Branching component; 21. Length marker; 22. Connecting end; 23. Free end; 31. Drive component; 32. Drive end; 33. First anchor; 34. Second anchor; 35. Hollow section; 41. First end; 42. Second end; 43. Support leg; 51. Anchor. ; 61, First bearing; 62, Support seat; 71, Anchor pin; 72, Rotating seat; 73, Second bearing; 221, Connecting disc; 222, Positioning hole; 223, P anchor; 311, Rotating shaft; 331, Clamping piece; 411, Elastic pad; 412, First support plate; 421, Second support plate; 621, Base; 622, Seat body; 721, Mounting hole; 411a, Support part; 411b, Anti-collision part. Detailed Implementation

[0024] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0025] Those skilled in the art will understand that, unless specifically stated otherwise, the terms "described" and "the" as used herein may also include plural forms. It should be further understood that the term "comprising" as used in this application's specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude other features, information, data, steps, operations, elements, components, and / or combinations thereof supported by this art. It should be understood that when we say an element is "connected" or "coupled" to another element, the element may be directly connected or coupled to the other element, or it may mean that the element and the other element are connected through an intermediate element. Furthermore, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The term "and / or" as used herein refers to at least one of the items defined by the term; for example, "A and / or B" may be implemented as "A," or as "B," or as "A and B."

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0027] First, let's introduce and explain several terms used in this application: The cable-stayed bridge cable is the main load-bearing component that directly transfers the weight of the main beam and bridge deck of a cable-stayed bridge to the tower. Steel strand refers to steel products made of multiple steel wires twisted together. The lower end of a beam refers to the end of a self-bending beam that faces the lower component structure of the bridge. The far end of the beam refers to the end of the self-bending beam that faces the upper component structure of the bridge. Beam end refers to the end component of a beam in which the tension cable is located; Tower end refers to the end component of a tower where the tension cable is located and the pressure is borne. Cable guide tubes are tubes installed at the ends of beams or towers for the installation of stay cables. Anchorage end refers to the anchoring structure used to anchor stay cables at the end of a beam.

[0028] The research and development concept of this application includes: improving the cable traction installation device during the cable-stayed bridge traction installation process, enabling relative rotation between the support component and the drive component of the installation device. This rotational structure dissipates the rotational force between the two components, effectively preventing breakage of the soft traction steel strand and damage to the drive component. Simultaneously, this application also improves the structure of the first end of the support section to prevent rigid collision between the anchor cup and the first end during traction, ensuring the traction safety of the anchor cup.

[0029] The technical solution of this application and how it solves the above-mentioned technical problems are described in detail below with specific embodiments. It should be noted that the following embodiments can be referenced, borrowed, or combined with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be described again.

[0030] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a cable-stayed bridge traction installation device provided in an embodiment of this application. The traction installation process of the cable-stayed bridge 1 in this application includes: configuring the cable-stayed bridge traction installation device, including: a drive assembly 3 and a support assembly 4 sleeved along the soft traction steel strand 2 from the lower end of the beam to the far end of the beam; adjusting the relative inclination angle between the anchor cup 5 and the cable guide tube at the beam end so that the two are close to each other to facilitate the coaxial installation of the cable-stayed bridge 1 and the anchoring end; setting length marks 21 on each soft traction steel strand 2 at the point of convergence as the starting point for monitoring the traction status; and configuring a first rotating assembly 6 between the support assembly 4 and the drive assembly 3 to prevent the soft traction steel strand 2 from twisting.

[0031] The specific work process for this application is as follows: First, one end of the stay cable 1 is installed to the pressure-bearing tower end, including: transporting the stay cable 1 to the construction site, hoisting one end of the stay cable 1 using a hoisting device, including a tower crane, truck crane, winch traction system, etc., while unwinding the stay cable 1, continuously raising the height of one end until one end of the stay cable 1 is close to the tower end; releasing the traction rope through the traction device set at the tower end, and connecting the traction rope to one end of the stay cable 1; then pulling one end of the stay cable 1 through the traction device until it extends out of the cable guide tube set at the tower end, and then fixing one end of the stay cable 1 to the anchor plate at the tower end with the anchor nut, thereby completing the installation of one end of the stay cable 1 at the tower end.

[0032] Next, the other end of the stay cable 1 is installed to the beam end of the bending beam, including: lifting and pulling the other end of the stay cable 1 through the above-mentioned hoisting device until it is close to the cable guide tube at the beam end; installing the stay cable traction installation device, the main body of the stay cable traction installation device is set at the lower end of the beam, mainly referring to the drive component 3 and the support component 4 being set at the lower end of the beam, and the support component 4 being supported at the lower end of the beam through its first end 41 to provide structural support. At this point, the other end of the stay cable 1 is located on the beam surface of the bending beam; the connecting end 22 of the soft traction steel strand 2 is connected to the other end of the stay cable 1 through the anchor cup 5, and the free end 23 of the soft traction steel strand 2 is passed through the cable guide tube at the beam end. The free end 23 refers to the other end of the soft traction steel strand 2 that is not used for connection with the anchor cup 5; then the soft traction steel strand 2 is passed out of the cable guide tube at the beam end until it extends beyond the lower end of the beam; the other end of the stay cable 1 is continued to be hoisted toward the cableway tube at the beam end by the hoisting device until the extension length of the soft traction steel strand 2 at the lower end of the beam meets the installation requirements of the stay cable traction installation device; while maintaining the hoisting state of the hoisting device, the free end 23 of the soft traction steel strand 2 is passed through the first end 4 in sequence. 1. The second end 42, the first rotating component 6 and the driving component 3 have through holes opened outward along the central axis and are fixed by the second anchor 34; then the inclination angle of the anchor cup 5 and the cable guide at the beam end is adjusted by the hoisting device so that the two are basically coaxial, so as to avoid the anchor cup 5 from colliding with the cable guide when the cable guide is inserted, which would cause damage to the threads of the anchor cup 5; then the driving component 3 is used to pull the soft traction steel strand 2, that is, to pull the other end of the stay cable 1 so that the other end of the stay cable 1 passes through the cable guide at the beam end and extends out of the lower end of the beam; then, the other end of the stay cable 1 is anchored to the anchor plate at the beam end by the anchor nut, thus completing the separate installation of the tower end and the beam end of the stay cable 1.

[0033] Furthermore, by repeating the installation operations at the tower end and beam end of cable 1, the installation of all cables 1 can be completed.

[0034] Optionally, during the process of the cable-stayed cable traction installation device pulling the cable 1 through the cable guide tube at the beam end, one operator needs to continuously adjust the relative inclination angle between the anchor cup 5 and the cable guide tube at the beam end using the hoisting device, while another operator pulls the soft traction steel strand 2 using the drive component 3. After the anchor cup 5 enters the cable guide tube, flexible protection is provided at the outlet of the cable guide tube at the lower end of the beam, such as laying rubber or burlap sacks, to prevent the cable body of the cable 1 from colliding with the outlet of the cable guide tube and causing damage to the cable 1.

[0035] Optionally, after the anchor cup 5 of the stay cable 1 extends out of the lower end of the beam, the other end of the stay cable 1 is pre-tightened by the anchor nut so that the anchor nut is in a flat cap state on the anchor plate to provide certain structural support; the stay cable 1 is then pulled by the stay cable traction installation device until the anchor nut is screwed into the predetermined position.

[0036] Optionally, during the process of traction of the stay cable 1 by the cable traction installation device, the length mark 21 set on the soft traction steel strand 2 is used to indicate the traction status of the soft traction steel strand 2. Since the length marks 21 of each soft traction steel strand 2 are flush on the horizontal plane, when the length mark 21 of any soft traction steel strand 2 is misaligned with the other soft traction steel strands 2, it is determined that the traction status is abnormal; when the length marks 21 of each soft traction steel strand 2 are consistent, it is determined that the traction status is normal.

[0037] Optionally, if the traction status is determined to be abnormal, the traction of the cable-stayed cable traction installation device is stopped. At the same time, the hoisting device is used to maintain the hoisting device of the cable-stayed cable 1, and the cable-stayed cable traction installation device is adjusted to restore the misaligned soft traction steel strand 2 to a state of being flush with the other soft traction steel strands 2. Then, the cable-stayed cable 1 is pulled by the cable-stayed cable traction installation device. The traction status of the soft traction steel strand 2 can be marked by the length mark 21. Furthermore, by adjusting the soft traction steel strand 2, the soft traction steel strand 2 is kept in a state of balanced force during the traction process, avoiding twisting or breakage of a certain soft traction steel strand 2 due to uneven force, thus ensuring safety during the construction process.

[0038] Optionally, during the process of traction of the cable-stayed cable 1 by the cable-stayed cable traction installation device, a first rotating component 6 is provided between the support component 4 and the drive component 3, so that the drive component 3 can rotate relative to the support component 4, thereby dissipating the rotational force between the two and avoiding damage to the drive component 3 or breakage of the soft traction steel strand 2 due to excessive rotational force between the drive component 3 and the support component 4.

[0039] The cable-stayed installation device provided in this application includes a drive assembly 3, a support assembly 4, a first rotating assembly 6, and a soft traction steel strand 2; the drive assembly 3 is used for tensioning the soft traction steel strand 2, the support assembly 4 is used to provide structural support for the anchor cup 5 and the drive assembly 3, and the first rotating assembly 6 is used to realize the rotational connection between the drive assembly 3 and the support assembly 4.

[0040] Further, please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a cable-stayed bridge traction installation device according to another embodiment of this application. The drive assembly 3 includes: a drive member 31, a drive end 32, a first anchor 33, a second anchor 34, and a hollow portion 35 disposed within the drive member 31; the hollow portion 35 is used for the soft traction steel strand 2 to be threaded through; the first anchor 33 and the second anchor 34 are respectively disposed at both ends of the drive member 31, the second anchor 34 is disposed close to the support assembly 4, and the first anchor 33 is disposed at the free end 23 of the soft traction steel strand 2; the drive end 32 of the drive member 31 can abut against the first anchor 33 for driving the first anchor 33.

[0041] Optionally, the drive unit 31 includes a mechanical jack or a hydraulic jack, such as a rack and pinion jack, a pneumatic jack, a hydraulic jack, an electrically driven jack, etc.

[0042] Optionally, both the first anchor 33 and the second anchor 34 are configured as plates with through holes for the soft traction steel strand 2 to pass through. Both the first anchor 33 and the second anchor 34 include clamps 331 for restraining or releasing the soft traction steel strand 2 in the through holes, so as to connect the first anchor 33 and / or the second anchor 34 to the soft traction steel strand 2 as needed.

[0043] Optionally, the clamping piece 331 of the first anchor 33 and the second anchor 34 can be replaced with a sleeve. The sleeve is inserted into the through hole between the first anchor 33 and the soft traction steel strand 2 or the second anchor 34 and the soft traction steel strand 2 to fix the first anchor 33 and the soft traction steel strand 2 or the second anchor 34 and the soft traction steel strand 2.

[0044] The support assembly 4 includes: a first support plate 412 and a second support plate 421 disposed opposite to each other, and a support foot 43 for connecting the support between the first support plate 412 and the second support plate 421 respectively. An elastic pad 411 is disposed in close contact with the first support plate 412. The elastic pad 411 includes a support portion 411a disposed on the outer surface of the first support plate 412 for providing elastic support between the support portion 411a and the lower end of the beam to ensure the durability of the first support plate 412, and an anti-collision portion 411b disposed on the inner wall of the through hole of the first support plate 412 for preventing the anchor cup 5 from having a rigid collision with the inner wall of the first support plate 412 and ensuring the structural integrity of the anchor cup 5.

[0045] Optionally, four sets of support legs 43 are provided, respectively located at the four corners of the opposite surfaces of the first support plate 412 and the second support plate 421, to form a frame-like support structure.

[0046] Combination Figure 3 , Figure 3 Provided for the embodiments of this application Figure 2 The enlarged schematic diagram at point A shows that the first rotating assembly 6 includes a first bearing 61 and a support base 62. The support base 62 includes a base 621 attached to the second end 42 and a seat 622 for accommodating the first bearing 61. The driving member 31 extends toward the support assembly 4 to form a rotating shaft 311. The rotating shaft 311 is used to axially fix the first bearing 61, thereby causing the rotating shaft 311 to rotate relative to the first bearing 61. That is, the driving member 31 rotates relative to the first rotating assembly 6 under the drive of the soft traction steel strand 2.

[0047] One end of the flexible traction steel strand 2 is configured as a connecting end 22 for connection to the anchor cup 5, thereby connecting it to the stay cable 1. The connecting end 22 is configured with a connecting plate 221, which has multiple positioning holes 222 in the middle. One end of the flexible traction steel strand 2 is processed into a P anchor 223 by a P anchor device, and the P anchor 223 is fixed to the positioning holes 222 on the connecting plate 221. This ensures that the connecting ends 22 of multiple flexible traction steel strands 2 are all constrained to the connecting plate 221, thus facilitating the simultaneous connection of multiple flexible traction steel strands 2 to the anchor cup 5 via the connecting plate 221.

[0048] Optionally, the length mark 21 may include any one of the following: a linear mark, a fluorescent mark, or a reflective mark, which makes it easy for operators to detect traction abnormalities in the soft traction steel strand 2 in a timely manner.

[0049] Optionally, the length marker 21 is set starting from the P anchor 223 of the soft traction steel strand 2 and is laid out in units of length.

[0050] Optionally, the unit length can range from 0.3m to 0.6m.

[0051] Optionally, the cable-stayed bridge traction installation device provided in this application further includes a branching member 8; the branching member 8 is configured as a plate, and its plate body is provided with a plurality of threading holes corresponding to the number of soft traction steel strands 2, the threading holes being used to thread the soft traction steel strands 2. It is worth explaining that the branching member 8 is located at the free end 23 of the soft traction steel strand 2. Since the soft traction steel strand 2 is installed on the beam surface and connected to the anchor cup 5 through the anchor plate, after the connection of the anchor cup 5 is completed, the cable tube extends out of the lower end of the beam, and then passes through the first anchor 33 and the second anchor 34 of the drive assembly 3. This can easily lead to the connection position of the soft traction steel strand 2 on the anchor plate being different from the connection position of the first anchor 33 and the second anchor 34, causing the soft traction steel strand 2 to twist inside the cable tube. The threading holes on the branch member 8 correspond one-to-one with the installation positions of the soft traction steel strand 2 on the anchor plate, and extend through the cable guide and out of the lower end of the beam along with the free end 23 of the soft traction steel strand 2. This provides a reference for the threading holes on the first anchor member 33 and the second anchor member 34, and avoids misalignment of the threading of the soft traction steel strand 2 on the first anchor member 33 and the second anchor member 34 relative to the connecting disc 221 of its connecting end 22, thereby ensuring that the soft traction steel strand 2 will not twist due to misalignment in the cable guide.

[0052] For example: The dividing member 8 is provided with a serial number identifier, which is used to correspond to the wire number of each soft traction steel strand 2. There are 8 soft traction steel strands 2, including wire number 1, wire number 2, ..., wire number 3. The dividing member 8 is correspondingly identified with serial number 1, serial number 2, ..., serial number 3. Serial number 1 is used to map the soft traction steel strand 2 identified with wire number 1. Thus, according to the correspondence between wire number and serial number, each soft traction steel strand 2 is threaded into the first anchor 33 and the second anchor 34, thereby further improving the accuracy of the soft traction steel strand 2 threading into the first anchor 33 and the second anchor 34.

[0053] Optionally, the length mark 21 can be used for calibration after the soft traction steel strand 2 is threaded through the first anchor 33 and the second anchor 34. When the length marks 21 of each soft traction steel strand 2 are on the same plane, the threading status of the soft traction steel strand 2 is normal. If the length mark 21 of any soft traction steel strand 2 is misaligned, the threading status of the soft traction steel strand 2 is determined to be abnormal, and the soft traction steel strand 2 needs to be threaded again.

[0054] In some possible embodiments, the cable-stayed bridge installation device provided in this application further includes a second rotating assembly 7, combined with... Figure 4 , Figure 4 Provided for the embodiments of this application Figure 4The enlarged schematic diagram at point B shows the second rotating assembly 7, which includes an anchor 71, a rotating seat 72, and a second bearing 73. The rotating seat 72 is configured as a cylindrical structure with a mounting hole 721 at the bottom, and the second bearing 73 is housed at the bottom of the rotating seat 72. The anchor 71 passes through the second bearing 73 and is connected to the anchor cup 5. At this time, the rotating seat 72 is rotatably connected to the anchor 71 via the second bearing 73, thus allowing it to rotate relative to the anchor 71. The connecting disc 221 is fixed to the port of the rotating seat 72 by a threaded connection, meaning that the soft traction steel strand 2 can rotate relative to the anchor cup 5.

[0055] In some possible implementations, a tensioning assembly, which is a rod, is provided between the anchor cup 5 and the flexible traction steel strand 2 to extend the connection between the anchor cup 5 and the flexible traction steel strand 2, thus accommodating the traction of a longer stay cable 1. It is worth explaining that... Figure 2 and Figure 4 The middle part of the anchor 71 can be lengthened to form a tensioning assembly.

[0056] Optionally, the anchor 71 is fixed to the end of the anchor cup 5 by means of a threaded connection, so that the length of the anchor 71 between the anchor cup 5 and the rotating seat 72 can be adjusted by adjusting the engagement length of the anchor 71, thereby realizing the adjustment of the extension length.

[0057] Optionally, the tensioning component can be configured in Figure 1 The cable-stayed bridge traction installation device shown is configured similarly Figure 2 Anchor 71 in the middle.

[0058] according to Figures 1 to 4 Based on the above description of each structure, the working process of the cable-stayed bridge traction installation device provided in this application includes: Optionally, when the free end 23 of the flexible traction steel strand 2 passes through the cable guide at the beam end, the free end 23 is provided with a branching member 8. The branching member 8 is used to provide support for the passage of the first anchor 33 and the second anchor 34 at the lower end of the beam, so as to avoid misalignment between the position of the flexible traction steel strand 2 on the anchor plate and the position on the first anchor 33 and the second anchor 34, and to ensure the balance of the cable force values ​​during the traction of the cable 1 by the flexible traction steel strand 2. Based on the functions of the first anchor 33, the second anchor 34 and the anchor 51, this application can include the following working states.

[0059] Working status 1: During the process of traction of the cable-stayed cable 1 by the cable-stayed cable traction installation device, if the traction state is found to be abnormal by the length mark 21, the drive of the drive component 31 to the first anchor 33 is stopped, and the hoisting device is kept in the hoisting state of the other end of the cable-stayed cable 1. The first anchor 33 and the second anchor 34 are respectively configured to the release state, and then the anchor cup 5 is anchored by the anchor 51. By manually rotating the soft traction steel strand 2, the rotating seat 72 is rotated relative to the anchor nail 71 under the support of the second bearing 73. Since the connecting plate 221 of the connecting end 22 of the soft traction steel strand 2 is fixed to the rotating seat 72 by the thread, the soft traction steel strand 2 can rotate with the rotation of the connecting plate 221, thereby releasing the rotational force of the soft traction steel strand 2 until the length mark 21 of each soft traction steel strand 2 returns to the initial state. At this time, according to the length mark 21, the traction state returns to normal, and the soft traction steel strand 2 can continue to be pulled by the drive component 3. It is worth explaining that during the tensioning process, due to uneven stress on different soft traction steel strands 2, the soft traction steel strands 2 with excessive stress will twist. Excessive torque on any soft traction steel strand 2 will cause the length mark 21 on it to shift relative to the length marks 21 on other soft traction steel strands 2 due to different rope deformation. This allows for monitoring of traction abnormalities in the soft traction steel strands 2 by observing the changes in the length mark 21. When a traction abnormality occurs, the first anchor 33 and the second anchor 34 can be configured to be in a released state. The anchor cup 5 is anchored by the anchor 51, thus restricting the movement of the anchor cup 5. Each soft traction steel strand 2 rotates relative to the anchor cup 5 with the support of the second rotating component 7, thereby releasing the rotational stress of the soft traction steel strand 2 and allowing it to return to its normal state. Therefore, this application can reset the rotation state of the soft traction steel strand 2 by setting the second rotating component 7 and monitoring the traction state, thereby reducing the risk of the soft traction steel strand 2 being easily broken when the tension is greatest under uneven stress.

[0060] Optionally, the anchor 51 is configured as an anchor nut, enabling the reuse of the anchor nut for the anchor cup 5, thus reducing the manufacturing cost of the cable-stayed traction installation device provided in this application.

[0061] Working Status 2: During the process of traction of the cable-stayed cable 1 by the cable-stayed cable traction installation device, when the traction is normal as determined by the length mark 21, the drive assembly 3 tensions the soft traction steel strand 2, including: configuring the anchor 51 and the second anchor 34 to the released state; anchoring the soft traction steel strand 2 by the first anchor 33, so that the first anchor 33 and the soft traction steel strand 2 form an integral part; driving the first anchor 33 by the drive end 32, so that the soft traction steel strand 2 is driven along with the first anchor 33, thereby causing the soft traction steel strand 2 to tension the cable-stayed cable 1 toward its free end 23, so that the cable-stayed cable 1 can extend through the cable guide at the beam end.

[0062] Working status 3: In state 2, when the drive end 32 reaches its maximum drive stroke, it can no longer tension the stay cable 1; the anchor 51 and the first anchor 33 are configured to be released; the soft traction steel strand 2 is anchored by the second anchor 34. Since the soft traction steel strand 2 is anchored by the second anchor 34, the drive end 32 returns to its original position. Since the first anchor 33 no longer anchors the soft traction steel strand 2, its return will not cause a change in the position of the soft traction steel strand 2; the soft traction steel strand 2 is anchored by the second anchor 34 until the drive end 32 returns to its initial state, so that the drive end 32 is in a state where the first anchor 33 can be driven again.

[0063] It is worth explaining that when the length mark 21 determines that the traction is normal, by alternating between working state 2 and working state 3, the drive end 32 can tension the stay cable 1 over a long distance without the need for a long drive stroke. It is also worth explaining that the overall tensioning principle of the stay cable 1 is as follows: While ensuring the relative inclination angle between the anchor cup 5 and the beam end cable guide, after configuring the stay cable traction installation device, the drive end 32 of the drive assembly 3 is in its initial state, and the stay cable traction installation device is set to working state 2. The soft traction steel strand 2 is tensioned by driving the first anchor 33 to tension the stay cable 1 towards the lower end of the beam; when the drive end 32 reaches its maximum stroke, the stay cable traction installation device is set to working state 3. In state 3, the soft traction steel strand 2 is first anchored via the second anchor 34, then the first anchor 33 is released, and the drive end 32 drives the first anchor 33 back to its initial state. Then, the soft traction steel strand 2 is anchored via the anchor 51, the second anchor 34 is released, and the drive end 32 can then tension the stay cable 1. By repeatedly performing the above operations, long-distance traction of the stay cable 1 can be achieved, or the drive assembly 3 can be miniaturized, allowing a short-stroke drive assembly 3 to also tension the stay cable 1. It is worth noting that the driving process of the short-stroke drive assembly 3 is more controllable and has higher driving precision.

[0064] Optionally, working state 1 is maintained throughout the entire cyclic traction process of the cable-stayed cable traction installation device, especially in working state 2. In working state 2, when the soft traction steel strand 2 is found to have an abnormal traction state by the length marker 21, working state 2 is stopped, and working state 1 is activated. First, the anchor cup 5 is anchored via the anchor 51 to maintain the tensioning process of the soft traction steel strand 2. Then, the first anchor 33 is set to the released state, thereby adjusting the force on the soft traction steel strand 2 via the second rotating component 7. After adjusting the force on the soft traction steel strand 2, working state 3 can be activated to restore the drive end 32 before reactivating working state 2, or working state 2 can be activated directly to continue tensioning the soft traction steel strand 2 via the first anchor 33.

[0065] In some alternative implementations, this application uses a hanging basket as a working platform at the lower end of the beam. Operators can control the cable-stayed cable traction and installation device from within the hanging basket, improving the convenience of the construction process.

[0066] By applying the embodiments of this application, at least the following beneficial effects can be achieved: During the installation of the stay cable, one end of the soft traction steel strand 2 is connected to the anchor cup 5, and the stay cable 1 is anchored inside the anchor cup 5. Thus, the stay cable 1 can be pulled by tensioning the soft traction steel strand 2. Since a first rotating component 6 is configured between the support component 4 and the drive component 3, the first rotating component 6 can realize the relative rotation between the drive component 3 and the support component 4. Therefore, during the process of the drive component 3 tensioning the soft traction steel strand 2, if the stay cable 1 releases rotational stress and drives the soft traction steel strand 2 to rotate, or if the soft traction steel strand 2 releases rotational stress and rotates, the soft traction steel strand 2 will drive the drive component 3 that is tensioning it to rotate. At this time, the first rotating component 6 can rotate relative to the support component 4, so that the drive component 3 rotates relative to the support component 4, thereby dissipating the rotational force between the drive component 3 and the support component 4 and achieving the purpose of preventing the soft traction steel strand 2 from twisting. Meanwhile, the first support plate 412 is provided with an elastic pad 411. The elastic pad 411 includes a support part 411a disposed on the outer surface of the first support plate 412, which is used to provide elastic support between the support part 411a and the lower end of the beam to ensure the durability of the first support plate 412, and an anti-collision part 411b disposed on the inner wall of the through hole of the first support plate 412 to avoid rigid collision between the anchor cup 5 and the inner wall of the first support plate 412, and to ensure the structural integrity of the anchor cup 5.

[0067] Those skilled in the art will understand that the steps, measures, and solutions in the various operations, methods, and processes discussed in this application can be alternated, modified, combined, or deleted. Furthermore, other steps, measures, and solutions in the various operations, methods, and processes discussed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted. Furthermore, steps, measures, and solutions in related technologies that are similar to those disclosed in this application can also be alternated, modified, rearranged, decomposed, combined, or deleted.

[0068] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate directions or positional relationships based on the exemplary directions or positional relationships shown in the accompanying drawings. They are used to facilitate the description or simplification of the embodiments of this application and are not intended to indicate or imply that the device or component 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 application.

[0069] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0070] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection of components within two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0071] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0072] The above description is only a component implementation method of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A cable-stayed bridge traction installation device, characterized in that, include: A support component, comprising a first end and a second end that are positioned relative to each other; A first rotating component is disposed at the second end of the support component; A drive component is rotatably connected to the first rotating component and configured to rotate relative to the first rotating component when driven. The soft traction steel strand has its connecting end used to connect to the anchor cup with the inclined cable connected in opposite directions, and its free end passes through the first end, the second end, the first rotating component and the drive component in sequence through the through hole opened outward along the central axis. The drive assembly further includes a first anchor for clamping a node at the free end, and for pulling the soft traction steel strand through the transmission of the first anchor; An elastic pad is provided at the first end; The elastic pad includes a support portion that fits against the outer surface of the first end and an anti-collision portion disposed on the inner wall of the through hole at the first end.

2. The cable-stayed bridge traction installation device as described in claim 1, characterized in that, The drive assembly further includes a drive component and a second anchor component; The first anchor and the second anchor are respectively disposed at both ends of the driving member, and the second anchor is disposed close to the first rotating assembly; The driving element is configured to drive the first anchor element.

3. The cable-stayed bridge traction installation device as described in claim 2, characterized in that, Both the first anchor and the second anchor include clips or sleeves.

4. The cable-stayed bridge traction installation device as described in claim 2, characterized in that, The driving component includes either a mechanical jack or a hydraulic jack.

5. The cable-stayed bridge traction installation device as described in claim 2, characterized in that, The first rotating assembly includes a first bearing and a support base; the support base includes a base attached to the second end and a seat for accommodating the first bearing; The drive component includes a rotating shaft extending toward the support assembly for axially fixing the first bearing.

6. The cable-stayed bridge traction installation device as described in claim 5, characterized in that, The aforementioned cable-stayed cable traction installation device also includes a second rotating component disposed between the connecting end and the anchor cup.

7. The cable-stayed bridge traction installation device as described in claim 6, characterized in that, The second rotating assembly includes an anchor, a rotating seat, and a second bearing; The rotating base is configured as a cylindrical structure with mounting holes at the bottom; The second bearing is housed at the bottom of the rotating seat; The anchor bolt passes through the second bearing and is connected to the anchor cup; The connecting end is connected to the top of the rotating base.

8. The cable-stayed bridge traction installation device as described in claim 7, characterized in that, The engagement length between the anchor and the anchor cup is adjustable.

9. The cable-stayed bridge traction installation device as described in claim 1, characterized in that, The flexible traction steel strand is configured as multiple strands, and a branching member is provided at the free end to guide the installation of the flexible traction steel strand.

10. The cable-stayed bridge traction installation device as described in claim 9, characterized in that, The strands of the soft traction steel strand are evenly spaced with flush markings to indicate the stress state of each strand.

Images