Self-climbing installation system for cable-stayed tower

Abstract

The present application discloses a self-climbing installation system for a steel cable tower, which includes a self-climbing component, a lifting component attached to the self-climbing component, and a power component installed on the lifting component; wherein, the self-climbing component includes a track attached to the surface of the steel cable tower and a climbing component sliding on the track; the lifting component includes a climbing frame, a lifting truss arranged at the top of the climbing frame, and a moving trolley of a traction sling arranged on the top surface of the lifting truss; the climbing frame is bolted to the climbing component; the power component is arranged on the lifting truss and is used to perform the lifting and translation processes. The present application uses a self-climbing installation system for the installation of the steel cable tower, so that the docking accuracy of the steel cable tower is controlled, the adjustability of the docking of the steel cable tower is improved, the operation difficulty and complexity in the construction process are reduced, and the construction safety is also improved.

Description

Technical Field

[0001] This application relates to the field of road and bridge construction, and particularly to a self-climbing installation system for a steel cable tower. Background Art

[0002] The linear control of the installation of the steel cable tower of a cable-stayed bridge or a suspension bridge is a very important task. If the linear deviation of the cable tower is large, it will not only affect the structural stress of the cable tower, but may also affect the overall construction quality of the bridge, leading to engineering quality accidents. At present, the hoisting of steel cable towers mostly uses tower cranes. After the processed steel tower segments are transported to the construction platform, large-tonnage tower cranes are used to hoist the segments into place in sections, and then butt-welded into shape. The tower crane is jacked up and wall-attached as the installation height of the cable tower increases. The main disadvantage of using a tower crane to hoist the cable tower is the difficulty in controlling the linearity of the cable tower. As the height of the cable tower increases, the tower crane and the cable tower must be wall-attached many times. Due to the uncertainty of the stress of the cable tower caused by the tower crane wall-attaching components and the influence of multiple wall-attaching iterations, it is difficult to control the linearity of the cable tower.

[0003] In addition, other high-altitude operation processes during the installation of the steel cable tower also need to rely on tower cranes or wall-attached elevators to transport construction workers to high altitudes. For the construction of ultra-high and ultra-large steel cable towers, using tower cranes and wall-attached elevators suitable for the engineering project increases the construction process and construction cost, which is not conducive to improving work efficiency. Summary of the Invention

[0004] The purpose of this application is to at least partially overcome the deficiencies of the prior art, and provide a convenient-to-use self-climbing installation system for a steel cable tower, as well as a self-climbing installation method for a steel cable tower implemented using this installation system.

[0005] To achieve the above technical objectives, the technical solution adopted in this application is as follows:

[0006] First, a self-climbing installation system for a steel cable tower, which includes a self-climbing component, a lifting component attached to the self-climbing component, and a power component installed on the lifting component; wherein,

[0007] The self-climbing component includes a track attached to the surface of the steel cable tower, and a climbing component that slides on the track;

[0008] The lifting component includes a climbing frame, a lifting truss provided at the top of the climbing frame, and a moving trolley of a traction sling provided on the top surface of the lifting truss; the climbing frame is bolted to the climbing component;

[0009] The power component is provided on the lifting truss and is used to perform lifting and translation operations.

[0010] Preferably, the climbing frame semi-surrounds the steel tower segment, and an opening is reserved on the side where the lifting truss extends.

[0011] Optionally, the reserved opening is arranged in the longitudinal direction of the bridge or the transverse direction of the bridge.

[0012] Further, the climbing frame includes a frame-type top frame and a plurality of vertical rods extending downward from the frame-type top frame, and the height of the vertical rods is greater than the sum of the height of one steel tower segment and the working height of the lifting appliance.

[0013] Preferably, the height of the vertical rods is 1.5 to 2.5 times the height of one steel tower segment.

[0014] Furthermore, the frame-type top frame includes two pairs of cross bars and longitudinal bars orthogonally spliced into a frame shape, the lifting truss includes a boom and a fixed arm, and the fixed arm is orthogonally connected to the cross bar.

[0015] Preferably, the width of the cross bar is greater than the sum of the cross-sectional width of the steel tower segment and the cross-sectional width of the lifting truss.

[0016] Optionally, the cross bar is provided with a reverse buckle track, the bottom of the fixed arm is reversely buckled on the reverse buckle track, and the reverse buckle track is further provided with a limiting member for locking the relative position of the lifting truss and the cross bar.

[0017] Optionally further, the cross bar is provided with a self-climbing component, the fixed arm is bolted to the climbing component of the self-climbing component, and the climbing component is provided with a limiting member for locking the relative position of the climbing component and the track.

[0018] Further, the power component is fixed on the fixed arm.

[0019] Secondly, a self-climbing installation method for a cable-stayed steel tower, which includes the following steps:

[0020] Install a self-climbing installation system on the top of the installed steel tower segment that meets the height requirements;

[0021] Use the self-climbing installation system to hoist and connect a continuous steel tower segment from one side of the cable-stayed steel tower to the top of the installed steel tower segment for installation;

[0022] After the continuous steel tower segment is installed in place, the self-climbing installation system vertically climbs to the next working station to install the next continuous steel tower segment;

[0023] After the cable-stayed steel tower is installed, the self-climbing installation system reversely descends to the initial installation position and is dismantled.

[0024] Preferably, the self-climbing installation system includes a self-climbing component, a lifting component attached to the self-climbing component, and a power component installed on the lifting component; wherein,

[0025] The self-climbing assembly includes a track attached to the surface of the cable tower and a climbing assembly that slides on the track;

[0026] The lifting assembly includes a climbing frame, a lifting truss provided at the top of the climbing frame, and a moving trolley of a traction sling provided on the top surface of the lifting truss; the climbing frame is bolted to the climbing assembly;

[0027] The power assembly is provided on the lifting truss and is used to perform the lifting and translation processes.

[0028] Preferably, the climbing frame includes a frame-type top frame and a plurality of vertical rods extending downward from the frame-type top frame, and the height of the vertical rods is 1.5 to 2.5 times the height of one steel tower segment.

[0029] Preferably, the disassembly steps of the self-climbing installation system include:

[0030] Adjust the fixed position of the lifting truss on the frame-type top frame so that the lifting truss does not interfere with the cable tower;

[0031] Drive the self-climbing assembly in the reverse direction to lower the entire self-climbing installation system to the initial installation position; disassemble the self-climbing installation system.

[0032] Optionally, adjusting the fixed position of the lifting truss on the frame-type top frame includes one of the following methods:

[0033] When there is a slide rail between the frame-type top frame and the lifting truss, modify the installation position of the power assembly so that the power assembly pulls the lifting truss to translate to one side of the frame-type top frame;

[0034] When the self-climbing assembly is horizontally arranged between the frame-type top frame and the lifting truss, use the self-climbing assembly to drive the lifting truss to translate to one side of the frame-type top frame.

[0035] Specifically, having a slide rail between the frame-type top frame and the lifting truss includes: arranging a reverse buckle track on the cross bar of the frame-type top frame orthogonal to the lifting truss, the bottom of the lifting truss being reversely buckled on the reverse buckle track, and the lifting truss being locked on the reverse buckle track when performing the cable tower hoisting process.

[0036] Alternatively, horizontally arranging the self-climbing assembly between the frame-type top frame and the lifting truss includes: arranging the self-climbing assembly on the cross bar of the frame-type top frame orthogonal to the lifting truss, the lifting truss being bolted to the self-climbing assembly, and the self-climbing assembly being locked when the lifting truss performs the cable tower hoisting process.

[0037] Further, the installed tower segments are installed by a crane.

[0038] Furthermore, the subsequent steel tower segment is lifted from one side of the cable tower along the bridge axis; the subsequent steel tower segment is transported from the bridge deck to the lifting point.

[0039] Alternatively, the subsequent steel tower segment is lifted from one side of the cable tower transverse to the bridge axis; the subsequent steel tower segment is transported from the construction trestle to the lifting point.

[0040] Compared with the prior art, the present application has the following advantages:

[0041] (1) For the installation system of the present application, the already installed cable tower segment is used as the foundation to hoist the next segment, eliminating the need for a separate powerful foundation. It can achieve self-climbing and descending, and the entire system is convenient for installation and removal.

[0042] (2) For the installation system of the present application, the climbing frame has a small self-weight, does not require multiple attachments, and most processes do not involve tower cranes. The stress of the cable tower is clear, which is beneficial to the control of the cable tower's linearity.

[0043] (3) For the installation system of the present application, the lifting truss and the climbing frame are set to be relatively slidable. Before the installation system is ready to self-descend, the driving lifting truss adjusts its fixed position on the top of the climbing frame so that the lifting truss does not interfere with the cable tower, enabling the installation system to smoothly achieve self-descending and reducing the participation of tower cranes in assisting the disassembly of the installation system.

[0044] (4) For the installation system of the present application, the climbing frame has versatility. The support also serves as a construction platform and can be used for cable tower welding construction, realizing multiple functions with one device.

[0045] (5) For the installation system of the present application, the lifting point can be set at the position along the bridge axis or at the position transverse to the bridge axis, and it can adapt to various construction environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a construction state diagram of hoisting the subsequent steel tower segment by the self-climbing installation system of the cable tower in the present application.

[0047] Figure 2 It is a construction state diagram of splicing the subsequent steel tower segment by the self-climbing installation system of the cable tower in the present application.

[0048] Figure 3 It is a top-down structural schematic diagram of the self-climbing installation system of the cable tower in the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] The following further describes the present application in detail with reference to the drawings and specific embodiments.

[0050] The self-climbing installation method of the cable-stayed tower of the present application can be realized through the self-climbing installation system of the cable-stayed tower. By using the self-climbing installation system of the cable-stayed tower, the self-climbing installation method of the cable-stayed tower can be executed more efficiently and conveniently; the self-climbing installation method of the cable-stayed tower is the usage method of the self-climbing installation system of the cable-stayed tower, and the self-climbing installation system of the cable-stayed tower is the equipment for implementing the self-climbing installation method of the cable-stayed tower. The self-climbing installation method of the cable-stayed tower and the self-climbing installation system of the cable-stayed tower are interdependent and conditional on each other.

[0051] Reference Figure 1 , before implementing the self-climbing installation method of the cable-stayed tower of the present application, it is preferably to have the following construction conditions: the foundation cap 1 of the cable-stayed tower 2 has been completed, and the transportation passage for the subsequent cable-stayed tower segment 22 has been built. In this embodiment, the construction trestle 4 is used as the transportation passage for the subsequent cable-stayed tower segment 22. It is preferably to use a flatbed truck to transport the subsequent cable-stayed tower segment 22 to the lifting point.

[0052] The self-climbing installation system 3 of the cable-stayed tower of the present application includes a self-climbing component 31, a lifting component 32 attached to the self-climbing component 31, and a power component 33 installed on the lifting component 32.

[0053] Specifically, the self-climbing component 31 includes a track attached to the surface of the cable-stayed tower 2 and a climbing component that slides on the track. In one possible implementation, the self-climbing component 31 includes an anchor cone, an anchor plate, an anchor shoe, a climbing head, and a lower support foot. The guide rail is fixed by a track support foot. The anchor cone and the embedded plate are placed in the concrete body as a whole. The load-bearing pin is inserted into the fixing hole of the anchor shoe, and the pre-assembled components (such as the lifting component 32) are hung on the load-bearing pin. The safety pin is inserted to lock the position of the climbing head. The climbing head is reliably connected to the load-bearing frame with a pin, and the lower support is reliably connected to the load-bearing frame with a bolt. Among them, the anchor plate is fixed at the position of the embedded anchor cone, and the anchor shoe is hung on the anchor plate and limited by a limit pin. Thus, the climbing component refers to the climbing head, the load-bearing frame, and the anchor shoe. In another possible implementation, the self-climbing component 31 includes an anchor seat embedded in the surface of the structure, a track attached to the anchor seat, and a climbing component that reversely hooks on the track; the climbing component is provided with a reverse hook portion that is in clearance fit with the track, and the climbing component and the track are fixed by pin connection. Further, the climbing component includes a climbing frame jacking seat, an oil cylinder seat connected below the climbing frame jacking seat through a jacking oil cylinder, and a climbing frame guiding seat provided below the oil cylinder seat. Among them, the climbing frame jacking seat and the climbing frame guiding seat are used for bolting to the object to be lifted (such as the lifting component 32).

[0054] The power component 33 preferably uses a hoisting winch, and a hoisting winch with a suitable load is configured according to the weight of a single cable-stayed tower segment, which is easily achieved by those skilled in the art.

[0055] Further, the lifting assembly 32 includes a climbing frame 321, a lifting truss 322 disposed at the top of the climbing frame 321, and a moving trolley 324 of a traction sling 323 disposed on the top surface of the lifting truss 322. The climbing frame 321 includes a frame-shaped top frame and a plurality of vertical rods extending downward from the frame-shaped top frame. Horizontal braces and diagonal braces are provided between some adjacent vertical rods, so that the climbing frame 321 semi-surrounds the steel tower segment, and an opening is reserved on one side where the subsequent steel tower segment 22 needs to be moved in and connected. The lifting truss 322 includes a fixed arm 3222 for fixing its body and a lifting arm 3221 extending beyond the projection plane of the bottom surface of the cable-stayed tower 2 to perform the lifting process. The lifting truss 322 is preferably composed of assembled truss units for easy subsequent disassembly. On the lifting truss 322, the power assembly 33 is fixedly disposed on the fixed arm 3222 and extends a traction steel rope to the moving trolley 324 and the sling 323 to control the lowering and lifting of the sling 323 and also control the reciprocating translation of the moving trolley 324 on the lifting truss 322.

[0056] Further, referring to Figure 3 , the frame-shaped top frame includes two pairs of crossbars 3211 and longitudinal bars 3212 orthogonally spliced into a frame shape. If the crossbar 3211 is used as the member connected to the fixed arm 3222 of the lifting truss 322, specifically, the fixed arm 3222 is orthogonally connected to the crossbar 3211. In order to adjust the position of the lifting truss 322 on the frame-shaped top frame subsequently, so that the self-climbing installation system 3 can reverse and descend to the initial installation position, the spanning width of the crossbar 3211 is preferably greater than the sum of the cross-sectional width of the cable-stayed tower 2 and the cross-sectional width of the lifting truss 322, so that the lifting truss 322 can be translated on the crossbar 3211 to a position where it does not interfere with the cable-stayed tower 2. Further, in order to realize the position adjustment of the lifting truss 322, according to the on-site implementation conditions, the following methods can be selected to realize the position adjustment of the lifting truss 322:

[0057] (1) Anti-buckling tracks are provided on the crossbar 3211, and the bottom of the fixed arm 3222 of the lifting truss 322 is buckled on the anti-buckling tracks. When the lifting truss 322 performs the processes of lifting and translating the steel tower segment, a limiting member 3223 is provided between the lifting truss 322 and the anti-buckling tracks to lock the relative positions of the lifting truss 322 and the crossbar 3211 and also prevent the lifting truss 322 from tipping over due to unbalanced tension; when the lifting truss 322 is adjusted in position, the installation position of the power assembly 33 is modified so that the power assembly 33 pulls the lifting truss 322 to translate to one side of the frame-shaped top frame. Referring to Figure 3, the power assembly 33 originally fixed on the fixed arm 3222 is respectively installed at the ends on the same side of a pair of cross bars 3211 (or the connection points of the cross bars 3211 and the longitudinal bars 3212). After releasing the locking relationship between the lifting truss 322 and the cross bar 3211, a traction steel cable is led out from the modified power assembly 33, and the lifting truss 322 is pulled to one side of the cross bar 3211. When the construction conditions permit, the lifting truss 322 can be appropriately disassembled to reduce the lateral width of the lifting truss 322.

[0058] (2) The self-climbing assembly 31 is horizontally arranged on the cross bar 3211. As described above, the climbing assembly includes a track and a climbing assembly that can slide on the track. The lifting truss 322 is bolted to the climbing assembly, and by locking the position of the climbing assembly on the track, the relative position between the lifting truss 322 and the cross bar 3211 can be locked. When the lifting truss 322 performs the processes of lifting and translating the steel tower segment, the lifting truss 322 is locked in the foregoing manner. When the position of the lifting truss 322 is adjusted, the locking relationship between the climbing assembly and the track is released, and the lifting truss 322 is pushed hydraulically to translate along with the movement of the climbing assembly until it moves to one side of the cross bar 3211. When the construction conditions permit, the lifting truss 322 can be appropriately disassembled. For example, the horizontal bracing in the middle of the lifting truss 322 is removed, and thus the lifting truss 322 is divided into two parts along the central axis of its body. The two disassembled parts are respectively translated towards each other by multiple groups of climbing assemblies to both sides of the cross bar 3211.

[0059] (3) When a tower crane matching the height of the cable-stayed tower 2 is set up due to construction needs, the tower crane can be used to assist in adjusting the position of the lifting truss 322. If the load of the tower crane is small, the modification of the power assembly 33 can be assisted by the tower crane, that is, the power assembly 33 is transferred from the fixed arm 3222 to the end of the cross bar 3211; if the load of the tower crane is large, the tower crane can be used to directly remove the lifting truss 322. At this time, the lifting truss 322 will not descend to the installation position along with the entire installation system 3. There is also a situation that if the operating environment is not suitable for hoisting the lifting truss 322 from the air to the ground, such as in the case of strong wind, the tower crane can be used to transfer the lifting truss 322 from the middle of the cross bar 3211 to the end of the cross bar 3211.

[0060] Furthermore, the self-climbing installation method of the cable-stayed tower of the present application is described in detail:

[0061] S1: Install the self-climbing installation system 3 on the top of the already installed steel tower segment 21 that meets the height requirements;

[0062] After the construction of the pedestal 1 is completed, the steel tower segments at the root are assembled using a crane until the installed steel tower segments meet the height requirements for installing the self-climbing installation system 3. Preferably, the installation height of the self-climbing installation system 3 is determined by the height of a steel tower segment and the operating height of the hoist 323. Specifically, since the self-climbing installation system 3 is attached to the surface of the cable tower 2 and is mainly installed by bolting the vertical rod to the self-climbing assembly 31, the length of the vertical rod mainly determines the installation height of the self-climbing installation system 3; the secondary determining factor of the installation height of the self-climbing installation system 3 is the hoist 323. The installation position of the hoist 323 of the self-climbing installation system 3 is above the steel tower segment. In order for the hoist 323 to be able to lift a steel tower segment, the height of the vertical rod itself must be greater than the height of a steel tower segment and the operating height of the hoist 323. The sum of the degrees, preferably, considering the stability of the climbing frame 321 of the self-climbing installation system 3 and the horizontal height of the lifting point, the height of the vertical rod is 1.5 to 2.5 times the height of a steel tower segment. Therefore, the installed tower segment at the root of the steel cable tower 2 for installing the self-climbing installation system 3 includes at least two steel tower segments. The installed steel tower segment 21 is preferably assembled by a crane. If the installed steel tower segment 21 at the root of the steel cable tower 2 is installed in situ, its height must also reach a height equivalent to at least two steel tower segments. Figure 1 shown.

[0063] When manufacturing each steel tower segment, it is necessary to pre-embed and install components of the track attached to the surface of the steel cable tower 2 so that the self-climbing installation system 3 can climb smoothly.

[0064] S2: Using the self-climbing installation system 3 to hoist the connecting steel tower segment 22 from one side of the steel cable tower 2 to the top of the installed steel tower segment 21 for installation;

[0065] After the self-climbing installation system 3 is installed, it climbs a certain distance until the hoisting device 323 can hoist the connecting steel tower segment 22 from the lifting point on one side of the cable tower 2 to the top of the installed steel tower segment 21 for installation. Further, the lifting point is determined by the specific construction conditions, and can usually be set in the direction of the bridge along the bridge or in the direction of the bridge across the bridge. If the lifting point is set in the direction of the bridge along the bridge, the lifting point can be set on the installed bridge deck, and the connecting steel tower segment 22 is transported from the bridge deck to the lifting point by a flatbed truck. Further, the connecting steel tower can be first transported to the bottom of the bridge by a barge, and then hoisted to the flatbed truck on the bridge deck; if the lifting point is set in the direction of the bridge across the bridge, the lifting point should be set on a special platform, and the special platform is connected to the construction trestle 4, so that the connecting steel tower segment 22 can be transported from the construction trestle 4 to the lifting point by a flatbed truck. Correspondingly, the climbing frame 321 of the self-climbing installation system 3 should have a reserved opening so that the subsequent steel tower segment 22 can be translated into the climbing frame 321 after being hoisted to achieve docking with the installed segment.

[0066] The subsequent steel tower segment 22 is vertically lifted under the traction of the lifting tool 323. When the bottom of the subsequent steel tower segment 22 is slightly higher than the top of the already installed steel tower segment 21, the lifting is stopped. Then, it is angularly translated along the longitudinal axis of the lifting truss 322 to above the top of the already installed steel tower segment 21 and slowly lowered. During the lowering process, adjustments are made to achieve precise docking with the already installed steel tower segment 21, as Figure 2 shown.

[0067] During docking, the climbing frame 321 itself can serve as a construction platform for the operating personnel to perform auxiliary work for precise docking. Subsequently, the operating personnel can perform welding connections between the steel tower segments on the climbing frame 321 and carry out other construction processes.

[0068] S3: After the subsequent steel tower segment 22 is installed in place, the self-climbing installation system 3 climbs vertically to the next working position to install the next subsequent steel tower segment 22;

[0069] Before the self-climbing installation system 3 climbs, the lifting tool 323 should be protected to prevent damage to the lifting tool 323 itself or damage to the surrounding components. Optionally, the lifting tool 323 protection tool can be used to stabilize the lifting tool 323 to prevent the lifting tool 323 from shaking. Or, the lifting tool 323 can be translated to the center of gravity line of the self-climbing installation system 3, which can also reduce the degree of shaking of the lifting tool 323.

[0070] When the self-climbing installation system 3 climbs, the hydraulic components inside the driving climbing assembly are actuated to drive the climbing assembly to drive the climbing frame 321 to climb in a step-by-step manner. When the self-climbing installation system 3 climbs to the specified height and reaches the next working position, the climbing assembly is locked to fix the working position of the self-climbing installation system 3.

[0071] S4: After the cable-stayed tower 2 is installed, the self-climbing installation system 3 descends reversely to the initial installation position and is disassembled.

[0072] Steps S2 and S3 are repeatedly executed until the installation of the steel tower segments is completed. When the self-climbing installation system 3 needs to be disassembled, it is preferably driven to descend reversely to the initial installation position for disassembly. The reverse descent process is the reverse process of the self-climbing process, which is easily understood by those skilled in the art. Before the self-climbing installation system 3 descends reversely, the fixed position of the lifting truss 322 on the frame top bracket needs to be adjusted so that the lifting truss 322 and the cable-stayed tower 2 do not interfere with each other. The adjustment method of the lifting truss 322 on the frame top bracket is the same as described above. After considering the high-altitude operation conditions, equipment usage cost, and construction period requirements, one of the following is selected:

[0073] (1) In the case where a slide rail is provided between the frame-type top frame and the lifting truss 322, modify the installation position of the power assembly 33 so that the power assembly 33 pulls the lifting truss 322 to translate to one side of the frame-type top frame;

[0074] (2) In the case where the self-climbing assembly 31 is horizontally arranged between the frame-type top frame and the lifting truss 322, use the self-climbing assembly 31 to drive the lifting truss 322 to translate to one side of the frame-type top frame;

[0075] (3) In the case where a tower crane is provided, modify the power assembly 33 through the tower crane, or adjust the position of the lifting truss 322, or even directly demolish the lifting truss 322 in the air.

[0076] After the self-climbing installation system 3 returns to the initial installation position, it is demolished in the reverse order of its installation sequence. The demolished components can be reused. The part of the surface of the cable tower 2 where the embedded parts are installed also needs to be repaired, and this repair process can be carried out synchronously when the self-climbing installation system 3 descends.

[0077] In summary, the present application uses a self-climbing installation system for the installation of the cable tower, which controls the docking accuracy of the cable tower, improves the adjustability of the docking of the cable tower, reduces the operation difficulty and complexity during the construction process, and also improves the construction safety. Further, the lifting truss and the climbing frame are arranged to be relatively slidable. Before the installation system is ready to descend automatically, the driving lifting truss adjusts the fixed position on the top of the climbing frame so that the lifting truss does not interfere with the cable tower, enabling the installation system to smoothly achieve self-descent and reducing the participation of the tower crane in assisting the disassembly of the installation system.

[0078] The above embodiments are the preferred embodiments of the present application, but are not limited to only the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present application shall be equivalent replacement methods and are all included in the protection scope of the present application.

Claims

1. A self-climbing installation system for a cable-stayed tower, characterized in that, It includes a self-climbing component, a lifting component attached to the self-climbing component, and a power component installed on the lifting component; wherein, The self-climbing component includes a track attached to the surface of the cable tower and a climbing component sliding on the track; The lifting component includes a climbing frame, a lifting truss provided at the top of the climbing frame, and a moving trolley of a traction sling provided on the top surface of the lifting truss; the climbing frame is bolted to the climbing component; the climbing frame includes a frame-type top frame and several vertical rods extending downward from the frame-type top frame; the frame-type top frame includes two pairs of cross bars and longitudinal bars orthogonally spliced into a frame shape, the lifting truss includes a boom and a fixed arm, and the fixed arm is orthogonally connected to the cross bar; the width of the cross bar is greater than the sum of the cross-sectional width of the steel tower segment and the cross-sectional width of the lifting truss; the cross bar is provided with a reverse buckle track, and the bottom of the fixed arm is reversely buckled on the reverse buckle track; the cross bar is provided with a self-climbing component arranged horizontally, the fixed arm is bolted to the climbing component of the self-climbing component, and the climbing component is provided with a limiting member for locking the relative position of the climbing component and the reverse buckle track; The power component is fixed on the fixed arm and is used to perform the lifting and translation processes; Before the reverse descent of the self-climbing installation system of the cable tower, the lifting truss is translated on the cross bar through the climbing component to a position where it does not interfere with the cable tower.

2. The system according to claim 1, wherein The climbing frame semi-surrounds the steel tower segment, and an opening is reserved on the side where the lifting truss extends.

3. The system according to claim 2, wherein The reserved opening is arranged in the longitudinal direction of the bridge or the transverse direction of the bridge.

4. The system according to claim 1, characterized in that, The height of the vertical rod is greater than the sum of the height of one steel tower segment and the working height of the sling.

5. The system according to claim 4, characterized in that The height of the vertical rod is 1.5 to 2.5 times the height of one steel tower segment.

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