Self-climbing crane

Abstract

The application provides a self-climbing crane, which is suitable for a cable tower of a double-tower column type and comprises a steel truss lifting system, the lifting system comprising a hydraulic jack lifting system and / or a winch lifting system, the steel truss extending along a transverse bridge direction and being arranged on the top of two tower columns under construction, the hydraulic jack lifting system being arranged on the steel truss and between the two tower columns and being used for lifting bridge components in a vertical direction, and the winch lifting system being movable along the longitudinal direction of the steel truss and being used for transporting the lifted bridge components in the transverse bridge direction. The steel truss of the application spans the two tower columns and can be provided with two sets of lifting systems, when lifting a steel tower segment or a steel beam segment, the lifting system is moved to an opening arranged at the end side of the steel truss for hoisting, the conventional feeding beam position is changed from the longitudinal bridge direction to the transverse bridge direction, and the self-climbing crane is supported by the two tower columns, so that the structural stability and the carrying capacity of the self-climbing crane are enhanced, and the stability of the hoisting process is ensured.

Description

Technical Field

[0001] This application relates to the field of bridge construction, and more particularly to a self-climbing crane. Background Technology

[0002] A cable-stayed bridge, also known as a skeletal-stayed bridge, is a type of bridge where the main girder is directly supported by numerous cables to the bridge towers. It is a structural system composed of compression-bearing towers, tension-bearing cables, and bending-bearing girder sections. It can be viewed as a multi-span elastically supported continuous beam where cables replace piers. This reduces bending moments within the girder, lowers the building height, reduces structural weight, and saves materials. A cable-stayed bridge mainly consists of towers, main girder sections, and stay cables. Currently, tower cranes are commonly used for hoisting the steel tower segments and steel crossbeam segments. However, due to the significant weight of these segments, large-tonnage tower cranes are often required, resulting in high costs. Furthermore, during construction, the horizontal thrust exerted by the tower crane on the tower column can easily exceed the structural strength limit of the tower, which is highly detrimental to the bridge's stress distribution. Summary of the Invention

[0003] The purpose of this application is to provide a self-climbing crane with high load-bearing capacity.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A self-climbing crane suitable for twin-tower cable-stayed towers includes a steel truss and a lifting system. The lifting system includes a hydraulic jack lifting system and / or a winch lifting system. The steel truss extends transversely and is erected on top of two towers under construction. The hydraulic jack lifting system is located on the steel truss and between the two towers for vertically lifting bridge components. The winch lifting system is movable along the longitudinal direction of the steel truss for transversely transporting the lifted bridge components.

[0006] Further configuration: The steel truss is provided with openings at both ends or one end along its length, and the end of the steel truss with the opening extends to the outside of the tower column and extends downward towards the tower column.

[0007] Further configuration: The winch lifting system includes a winch lifting bracket, a winch, and a wire rope. The winch is installed on the winch lifting bracket, and the wire rope is connected to the winch for winding and unwinding by the winch. The winch lifting bracket can move along the longitudinal direction of the steel truss.

[0008] Further configuration: The top of the steel truss is provided with a guide rail extending along its longitudinal direction, and the bottom of the winch lifting support is provided with a traveling device that cooperates with the guide rail.

[0009] Further configuration: Two sets of steel wire ropes are installed on the winch lifting support, and a lifting device is installed at the end of the steel wire rope away from the winch.

[0010] Further configuration: The lifting device includes a lifting device body, a spreader beam, and lifting lugs. The wire rope is connected to the lifting device body. The lifting device body is hinged to the upper middle part of the spreader beam. The lifting lugs are located at both ends of the lower side of the spreader beam for connection with bridge structural components. A slope adjustment cylinder is also provided between the lifting device body and the spreader beam.

[0011] Further configuration: The hydraulic jack lifting system includes a hydraulic jack and a steel strand. The hydraulic jack is fixed on the steel truss, and the steel strand passes through the middle of the hydraulic jack to lift the steel strand.

[0012] Further configuration: The hydraulic jack lifting system is equipped with two sets of hydraulic jacks and steel strands between the two tower columns, and the two sets of steel strands are used to connect the two ends of the bridge structure.

[0013] Further configuration: The bottom of the steel truss is provided with two sets of self-climbing systems respectively attached to two tower columns. Each set of self-climbing systems includes an anchor seat pre-embedded in the tower column, a track attached to the anchor seat, and a climbing component with a hook on the track. The climbing component is fixed to the track by a pin connection.

[0014] Further configuration: The climbing assembly includes a climbing frame, a climbing frame lifting seat, a cylinder seat, and a lifting cylinder. The top of the climbing frame is connected to the bottom of the steel truss. The climbing frame is fixedly connected to the climbing frame lifting seat. The lifting cylinder is connected between the climbing frame lifting seat and the cylinder seat. The track is provided with insertion and removal pin holes. Both the climbing frame lifting seat and the cylinder seat are provided with retractable insertion and removal pin mechanisms that can be inserted into the insertion and removal pin holes.

[0015] Compared with existing technologies, the solution in this application has the following advantages:

[0016] 1. In the self-climbing crane of this application, the steel truss spans two tower columns and can be equipped with two sets of lifting systems. When lifting steel tower segments or steel crossbeam segments, the hoisting system can move the crane to the opening set on the end side of the steel truss for hoisting, thereby changing the conventional beam feeding position from the longitudinal direction to the transverse direction. Furthermore, the self-climbing crane is supported by two tower columns, which enhances the structural stability and load-bearing capacity of the self-climbing crane, thereby ensuring the stability of the hoisting process.

[0017] 2. In the self-climbing crane of this application, a winch lifting system and a hydraulic jack lifting system are adopted. The lifting speed of the winch lifting system is faster than that of the hydraulic jack. This application adopts a combination of two lifting systems, which can meet the needs of different lifting scenarios and can also speed up the lifting of bridge structural components, thereby accelerating the construction process.

[0018] 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

[0019] 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:

[0020] Figure 1 This is a schematic diagram of one embodiment of the self-climbing crane of this application;

[0021] Figure 2 for Figure 1 Enlarged view of the A-section structure;

[0022] Figure 3 This is a schematic diagram of the upward structure of the self-climbing crane of this application;

[0023] Figure 4 This is a structural schematic diagram of the self-climbing crane used for lifting steel beams in this application;

[0024] Figure 5 A schematic diagram of the structure of the self-climbing crane of this application, which has two openings and two sets of winch lifting systems;

[0025] Figure 6 A structural diagram showing the self-climbing crane of this application with two openings and two sets of jack lifting systems;

[0026] Figure 7 A structural diagram showing the self-climbing crane of this application with a single opening and a winch lifting system and a jack lifting system.

[0027] In the diagram, 1. Steel truss; 11. Opening; 12. Slide rail; 2. Winch lifting system; 21. Winch lifting support; 22. Winch; 23. Wire rope; 24. Lifting device; 241. Lifting device body; 242. Spreader beam; 243. Lifting lug; 244. Inclined adjustment cylinder; 3. Hydraulic jack lifting system; 31. Hydraulic jack; 32. Steel strand; 4. Self-climbing system; 41. Climbing frame; 411. Connecting parts; 42. Climbing frame lifting seat; 43. Cylinder seat; 44. Lifting cylinder; 45. Rail. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0029] To address the problem that existing methods for lifting multiple crossbeams require the installation of temporary connecting supports and temporary bracing on the tower column, resulting in long construction time and high construction risks, this application provides a method for installing multi-crossbeam cable towers using a self-climbing crane. This method reduces the construction difficulty and risks of the tower column and multiple steel crossbeams, improves construction efficiency, and accelerates the construction progress.

[0030] Please see Figures 1 to 4 The multi-beam cable-stayed tower installation method of this application is applicable to the construction of double-tower type cable-stayed towers. The implementation of this method requires a self-climbing crane. Specifically, the self-climbing crane includes a steel truss 1, a hydraulic jack lifting system 3, and a winch lifting system 2. The steel truss 1 extends transversely and is erected on top of the tower column under construction. Both the hydraulic jack lifting system 3 and the winch lifting system 2 are located on the top side of the steel truss 1. The hydraulic jack lifting system 3 is located between the two tower columns and is used for vertically hoisting bridge structural components, specifically for hoisting the steel crossbeams located between the two tower columns. The winch lifting system 2 can move along the longitudinal direction of the steel truss 1, reaching one end of the steel truss 1, and hoisting bridge structural components at that end. Simultaneously, the winch lifting system 2 can transport the bridge structural components hoisted to the steel truss 1 along the longitudinal direction of the steel truss 1.

[0031] The steel truss 1 has openings at both ends or one end along its length. The end of the steel truss with the opening serves as the feeding end for bridge structural components. Bridge structural components hoisted by the winch lifting system 2 can enter the steel truss 1 through the opening 11 for transportation. The end of the steel truss 1 with the opening 11 extends to the outside of the tower column, and this end is inclined downwards towards the tower column. Since the winch lifting system 2 hoists the bridge structural components vertically, the inclined opening 11 facilitates the winch lifting system 2 in lifting the bridge structural components to the opening 11 of the steel truss 1 for convenient transportation.

[0032] In this embodiment, an opening is provided at one end of the steel truss, and a winch lifting system is installed on the steel truss. The winch lifting system 2 includes a winch 22 lifting bracket 21, a winch 22, and a wire rope 23. The winch 22 is installed on the winch 22 lifting bracket 21, and the wire rope 23 is connected to the winch 22 for winding and unwinding by the winch 22. Simultaneously, a lifting device 24 for connecting to the bridge structure to be lifted is provided at the end of the wire rope 23 away from the winch 22 (i.e., the end used for connecting to the bridge structure). The lifting device 24 includes a lifting device body 241, a spreader beam 242, and lifting lugs 243. The lifting device body 241 is hinged to the upper middle part of the spreader beam 242, and the lifting lugs 243 are located at both ends of the lower side of the spreader beam 242 for two-point connection with the bridge structure, thereby improving the connection strength between the lifting device 24 and the bridge structure. In addition, a slope adjustment cylinder 244 is provided between the lifting device body 241 and the spreader beam 242. By extending and retracting the slope adjustment cylinder 244, the spreader beam 242 can be swung relative to the lifting device body 241, thereby adjusting the longitudinal inclination of the spreader beam 242.

[0033] Furthermore, the winch lifting system 2 is equipped with two sets of wire ropes 23 to lift bridge components. Correspondingly, two sets of lifting devices 24 are also provided. By using the two sets of lifting devices 24 to lift bridge components, the stability and safety of the lifting operation can be greatly improved.

[0034] In addition, the top of the steel truss 1 is provided with a guide rail extending along its longitudinal direction, and the bottom of the winch 22 lifting support 21 is provided with a traveling device that cooperates with the guide rail. In this embodiment, the traveling device can be a traveling jack or traveling wheels to realize the movement of the winch 22 lifting support 21 along the longitudinal direction of the steel truss 1.

[0035] Since the winch lifting system 2 needs to move along the longitudinal direction of the steel truss 1, the winch lifting system 2 and the hydraulic jack 31 need to be staggered in the transverse direction of the steel truss 1. The hydraulic jack lifting system 3 includes a hydraulic jack 31 and a steel strand 32. The hydraulic jack 31 is fixed on the steel truss 1. In this embodiment, the hydraulic jack 31 is preferably a through-type jack. The steel strand 32 passes through the middle of the hydraulic jack 31 so that the steel strand 32 can be lifted by the hydraulic jack 31, thereby achieving the purpose of lifting the bridge structure between the two tower columns.

[0036] Furthermore, the hydraulic jack lifting system 3 of this application is provided with two sets between the two tower columns. The steel strands 32 of the two sets of hydraulic jack lifting systems 3 are respectively used to connect the two ends of the bridge structure, and the steel strands 32 are lifted by the hydraulic jacks 31 of the two sets of hydraulic jack lifting systems 3 to lift the bridge structure, thereby ensuring the stability of the bridge structure hoisting process.

[0037] Furthermore, in a preferred embodiment, please combine Figure 5 The steel truss 1 has openings 11 at both ends along its length, and two sets of winch lifting systems 2 can be installed on the steel truss 1. The two winch systems 2 can be used to simultaneously lift bridge components from the openings 11 at both ends of the steel truss 1. By making both ends of the steel truss 1 open 11, it is convenient for the two winch lifting systems 2 to simultaneously lift bridge components, thereby increasing the hoisting speed and accelerating the construction process. Furthermore, this embodiment eliminates the need for the hydraulic jack system; the construction of the tower columns and their steel beams can be completed using only the two winch lifting systems 2.

[0038] In yet another preferred embodiment, please refer to Figure 6 The steel truss 1 has openings 11 at both ends along its length. In this embodiment, two sets of jack lifting systems 3 are installed on the steel truss 1. The two sets of jack lifting systems 3 are used to simultaneously lift bridge components from the openings at both ends of the steel truss 1. The function of the jack lifting system 3 is the same as that of the winch lifting system 2, both of which can achieve the purpose of lifting bridge components.

[0039] Both the winch lifting system 2 and the jack lifting system 3 serve to provide bridge structural components. Therefore, in actual construction, different lifting systems can be selected based on site conditions. Furthermore, in some embodiments, please refer to... Figure 7 The steel truss 1 is provided with an opening 11 at one end, and is equipped with a winch lifting system 2 and a jack lifting system 3. The construction of the tower column is completed using two different lifting systems.

[0040] The self-climbing crane of this application also includes a self-climbing system 4 located at the bottom of the steel truss 1. The self-climbing system 4 enables the crane to climb along the height of the tower column, facilitating construction and solving the problem of insufficient height for lifting tools such as truck cranes. Two sets of the self-climbing system 4 are provided for each of the two tower columns. Each set of the self-climbing system 4 includes an anchor seat (not shown) pre-embedded in the side wall of the tower column, a rail 45 attached to the anchor seat, and a climbing component with a hook on the rail 45.

[0041] Specifically, there are multiple anchor seats pre-embedded on the surface of the tower column at preset intervals. The rails 45 are installed on the anchor seats, and in this embodiment, at least three rails 45 are provided, with adjacent rails 45 connected end to end. The rails 45 can be used alternately. When reusing the rails 45, the bottommost rail 45 is moved to the top of the topmost rail 45 and spliced ​​together.

[0042] The climbing assembly includes a climbing frame 41, a climbing frame lifting seat 42, a cylinder seat 43, and a lifting cylinder 44. The climbing frame 41 is fixedly connected to the climbing frame lifting seat 42. The top of the climbing frame 41 is provided with a connector 411 that connects to the bottom of the steel truss 1. The lifting cylinder 44 is located between the climbing frame lifting seat 42 and the cylinder seat 43. The bottom of the lifting cylinder 44 is fixedly connected to the cylinder seat 43, and the piston rod extension end of the lifting cylinder 44 is connected to the climbing frame lifting seat 42. Meanwhile, the climbing frame lifting seat 42 and the cylinder seat 43 are movably connected to the track 45. The track 45 is provided with multiple insertion and removal pin holes (not shown) along its longitudinal direction. The climbing frame lifting seat 42 and the cylinder seat 43 are provided with insertion and removal pin mechanisms (not shown) that can cooperate with the insertion and removal pin holes of the track 45, thereby realizing the movable connection between the climbing frame lifting seat 42 and the cylinder seat 43 and the track 45. Then, by intermittently pushing the climbing frame lifting seat 42 by the lifting cylinder 44, the climbing component moves along the track 45, thereby completing the self-climbing of the self-climbing crane.

[0043] Furthermore, as the pylon is constructed upwards, the distance between the two tower columns gradually decreases. Since the self-climbing crane's self-climbing system 4 is attached to the tower column, the connection position between the self-climbing system 4 and the steel truss 1 will change accordingly. Specifically, the position of the self-climbing system 4 connected near the opening 11 of the steel truss 1 relative to the steel truss 1 is adjustable, while the position of the self-climbing system 4 away from the opening 11 of the steel truss 1 is relatively fixed relative to the steel truss 1. The self-climbing system 4 is connected to the steel truss 1 via the connector 411. The connector 411 includes a first connecting seat connected to the steel truss 1 and a second connecting seat connected to the climbing frame 41 of the self-climbing system 4. A slide rail 12 extending longitudinally is provided on the bottom side of the steel truss 1 near its opening 11. The first connecting seat of the connector 411 near the opening 11 of the steel truss 1 cooperates with the slide rail 12, allowing the self-climbing system 4 near the opening 11 of the steel truss 1 to adapt to the reduction of the tower column diameter to adjust its position relative to the steel truss 1, thus ensuring the normal self-climbing of the self-climbing crane of this application. Furthermore, the first connecting seat and the second connecting seat are hinged, and fasteners are provided between the first connecting seat and the second connecting seat to limit the relative rotation of the first connecting seat and the second connecting seat. As the distance between the two tower columns of the pylon gradually decreases with height, the steel truss 1 can remain horizontal through the hinged arrangement of the slide rail 12, the first connecting seat, and the second connecting seat, thereby ensuring the stability of the bridge structure hoisting.

[0044] This application's self-climbing crane changes the lifting and feeding position of the beam from the longitudinal direction of the bridge to the transverse direction, and increases the number of support frames for the self-climbing crane, changing from single-tower support to double-tower support, improving structural stability and load-bearing capacity. It enables the installation of crossbeams on multi-beam cable towers without the need for temporary connection anchor points. Furthermore, the self-climbing crane of this application is equipped with a dual lifting system consisting of a winch lifting system 2 and a hydraulic jack lifting system 3. The winch lifting system 2 can be used when hoisting tower column segments or steel crossbeam segments, resulting in rapid lifting. The hydraulic jack 31 can be used to lift the assembled steel crossbeam as a whole, facilitating construction and eliminating the need for temporary connection fixing seats and temporary cross braces, greatly reducing construction difficulty and risk.

[0045] The multi-beam cable tower installation method of this application is accomplished using the aforementioned self-climbing crane, and specifically includes the following steps:

[0046] First, the steel tower segments at the bottom of the tower column are hoisted and installed at the pier using a truck crane or floating crane. After construction reaches a certain height, a self-climbing crane is installed on the top of two adjacent tower columns that meet the height requirements. The self-climbing crane is used to lift the steel tower segments and steel crossbeams and their sub-segments. The construction of the steel crossbeams proceeds from bottom to top as the height of the tower column increases.

[0047] The steel tower segments of the tower column are hoisted using the winch lifting system 2 of the self-climbing crane, and then moved along the longitudinal direction of the steel truss 1 by the winch lifting system 2 to transport them to the top of the tower column for easy construction.

[0048] When the tower column is constructed above the installation position of the first steel crossbeam, the self-climbing crane can be used to lift the first steel crossbeam to its installation position and weld it in place. Since the first steel crossbeam is the bottommost crossbeam of the multi-beam cable tower and there are no other bridge structures obstructing its path below, the prefabricated first steel crossbeam can be lifted as a whole using the hydraulic jack lifting system 3 of the self-climbing crane. After the construction of the first steel crossbeam is completed, the tower column construction continues.

[0049] When the tower column is constructed above the installation position of the second steel crossbeam, the self-climbing crane is used to hoist the segments of the second steel crossbeam onto the completed first steel crossbeam. The first steel crossbeam serves as the assembly foundation for the second steel crossbeam. The second steel crossbeam is then assembled on the first steel crossbeam. Subsequently, the self-climbing crane is used to hoist the assembled second steel crossbeam from the first steel crossbeam to its installation position for welding and fixing.

[0050] When hoisting the second steel crossbeam, the hoisting system 2 of the self-climbing crane can be used to lift the steel crossbeam segments at the opening 11 of the steel truss 1. Then, the hoisting system 2 is used to transport the steel crossbeam segments along the longitudinal direction of the steel truss 1 and lower the steel crossbeam segments onto the first steel crossbeam that has been assembled. The position of the lowered steel crossbeam segments can be adjusted at any time to facilitate the assembly of the steel crossbeam. After the second steel crossbeam is assembled on the first steel crossbeam, the hydraulic jack lifting system 3 of the self-climbing crane is connected to both ends of the second steel crossbeam to hoist the assembled second steel crossbeam from the first steel crossbeam to its installation position for welding and fixing.

[0051] Then, the construction of the tower columns and the remaining steel beams continued, and the construction of the second steel beam was completed to finish the construction of the remaining steel beams.

[0052] This embodiment of the multi-beam cable tower has four steel crossbeams. The first steel crossbeam, located at the bottom, can be directly hoisted from the ground or a floating crane. The second, third, and fourth steel crossbeams, arranged sequentially above the first steel crossbeam, can be hoisted in sections by a self-climbing crane to the already constructed steel crossbeams below the steel crossbeam to be constructed, and then assembled. The assembled steel crossbeams are then lifted to their installation positions for welding and fixing, thus eliminating the need for temporary fixed mounting seats and other temporary support components on the tower column. Furthermore, given the significant weight of the steel crossbeams, this application segments the steel crossbeams for hoisting, using the lower steel crossbeam as the assembly foundation for the upper steel crossbeams. This facilitates construction and reduces the problem of excessive stress on the overall hoisted steel crossbeams, which could lead to excessive installation difficulty and risk, greatly accelerating the construction progress.

[0053] In summary, this application utilizes a self-climbing crane to construct the multi-beam cable tower. By changing the conventional beam feeding position from the longitudinal direction to the transverse direction, the self-climbing crane is supported by two tower columns, enhancing its structural stability and load-bearing capacity, thereby ensuring stability during the hoisting process. Furthermore, the self-climbing crane is not only used in the assembly of the tower body and main beam structure of the multi-beam cable tower in this application, but also in the transportation of other bridge structural components. Simultaneously, in the installation method of the multi-beam cable tower in this application, when installing the steel crossbeams, the upper steel crossbeam can use the steel crossbeam below it as an assembly foundation. The steel crossbeam segments are hoisted onto the lower steel crossbeam for assembly, and then the entire structure is hoisted to the installation position for installation and fixation. This reduces the hoisting difficulty, eliminates the need for additional temporary anchor points, facilitates construction, and significantly accelerates the construction process.

[0054] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A self-climbing crane, suitable for twin-tower cable towers, characterized in that, The structure includes a steel truss and a lifting system. The lifting system includes a hydraulic jack lifting system and / or a winch lifting system. The steel truss extends transversely along the bridge and is erected on top of two tower columns under construction. The hydraulic jack lifting system is located on the steel truss and between the two tower columns for vertically lifting bridge components. The winch lifting system is movable along the longitudinal direction of the steel truss for transversely transporting the lifted bridge components. The steel truss has openings at both ends or one end along its length, and the end of the steel truss with the opening extends to the outside of the tower column and extends downward toward the tower column. The steel truss has two sets of self-climbing systems attached to two tower columns at its base. Each set includes an anchor seat embedded in the tower column, a track attached to the anchor seat, and a climbing component hooked onto the track. The climbing component is fixed to the track by a pin connection. The self-climbing system near the opening of the steel truss is adjustable relative to the steel truss, while the self-climbing system away from the opening is fixed relative to the steel truss. The self-climbing system is connected to the steel truss via a connector, which includes a connector for attaching to the steel truss. The steel truss has a first connecting seat and a second connecting seat connected to the climbing frame of the self-climbing system. The bottom side of the steel truss is provided with a slide rail extending along its longitudinal direction near its opening. The first connecting seat of the connector near the opening of the steel truss cooperates with the slide rail, so that the self-climbing system near the opening of the steel truss can adapt to the reduction of the tower column diameter to adjust its position relative to the steel truss. The first connecting seat and the second connecting seat are hinged. Fasteners are provided between the first connecting seat and the second connecting seat to limit the relative rotation of the first connecting seat and the second connecting seat.

2. The self-climbing crane according to claim 1, characterized in that, The winch lifting system includes a winch lifting bracket, a winch, and a wire rope. The winch is mounted on the winch lifting bracket, and the wire rope is connected to the winch for winding and unwinding by the winch. The winch lifting bracket can move along the longitudinal direction of the steel truss.

3. The self-climbing crane according to claim 2, characterized in that, The top of the steel truss is provided with a guide rail extending along its longitudinal direction, and the bottom of the winch lifting support is provided with a traveling device that cooperates with the guide rail.

4. The self-climbing crane according to claim 3, characterized in that, Two sets of wire ropes are installed on the winch lifting support, and a lifting device is installed at the end of the wire rope away from the winch.

5. The self-climbing crane according to claim 4, characterized in that, The lifting device includes a lifting device body, a spreader beam, and lifting lugs. The wire rope is connected to the lifting device body. The lifting device body is hinged to the upper middle part of the spreader beam. The lifting lugs are located at both ends of the lower side of the spreader beam for connection with bridge structural components. A slope adjustment cylinder is also provided between the lifting device body and the spreader beam.

6. The self-climbing crane according to claim 1, characterized in that, The hydraulic jack lifting system includes hydraulic jacks and steel strands. The hydraulic jacks are fixed on the steel truss, and the steel strands pass through the middle of the hydraulic jacks to lift the steel strands.

7. The self-climbing crane according to claim 1, characterized in that, The hydraulic jack lifting system consists of two sets of hydraulic jacks and steel strands between the two tower columns. The two sets of steel strands are used to connect the two ends of the bridge structure.

8. The self-climbing crane according to claim 1, characterized in that, The climbing assembly includes a climbing frame, a climbing frame lifting seat, a cylinder seat, and a lifting cylinder. The top of the climbing frame is connected to the bottom of the steel truss. The climbing frame is fixedly connected to the climbing frame lifting seat. The lifting cylinder is connected between the climbing frame lifting seat and the cylinder seat. The track is provided with insertion and removal pin holes. Both the climbing frame lifting seat and the cylinder seat are provided with retractable insertion and removal pin mechanisms that can be inserted into the insertion and removal pin holes.

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