Integrated crane system

Abstract

This application provides an integrated crane system for lifting and jacking, including a crane frame, a continuous climbing mechanism, a lifting frame, and a lifting device. The crane frame is mounted on the main truss of a self-climbing crane and moves along the transverse direction. The continuous climbing mechanism is mounted on the crane frame for vertically lifting the crane frame. The lifting frame is mounted on the crane frame and can move along the length of the crane frame. The lifting device is used to lift the bridge structure to be installed. The lifting device and the lifting frame are connected by a wire rope, and the lifting frame guides the wire rope of the lifting device. The self-climbing of the integrated crane system is achieved through the insertion and engagement of the lifting column and the climbing cylinder in the continuous climbing mechanism, which in turn drives the main truss connected to the integrated crane system to climb. This eliminates the need for a tower crane with attached columns to lift the crane, simplifying construction.

Description

Technical Field

[0001] This application relates to the field of cable tower construction, and in particular to an integrated crane system for lifting and jacking. Background Technology

[0002] A cable-stayed bridge, also known as a skew-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-resistant 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.

[0003] Cable-stayed bridges mainly consist of towers, main beams, and stay cables. Currently, tower cranes are commonly used to hoist bridge structural components such as steel tower segments and steel crossbeam segments. Due to the large weight of the steel tower segments and steel crossbeam segments, large-tonnage tower cranes are often required, resulting in high costs. Furthermore, during construction, the horizontal thrust exerted by the tower crane attached to the wall on the tower column is significant, easily exceeding the structural strength limit of the tower, which is very detrimental to the stress on the bridge. Summary of the Invention

[0004] The purpose of this application is to provide a self-climbing integrated crane system.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A crane system integrating lifting and jacking includes a crane frame, a continuous climbing mechanism, a lifting frame, and a lifting device;

[0007] The crane frame is mounted on the main truss of the self-climbing crane and can move along the transverse bridge direction;

[0008] The continuous climbing mechanism is mounted on the crane frame for lifting the crane frame in the vertical direction.

[0009] The lifting frame is mounted on the crane frame and can move along the length of the crane frame. The lifting device is used to lift the bridge structure to be installed. The lifting device is connected to the lifting frame by a wire rope, and the lifting frame guides the wire rope that lifts the lifting device.

[0010] Further configuration: The continuous climbing mechanism includes a lifting column and a climbing cylinder. The lifting column is provided with a plurality of insertion holes arranged along its length. The climbing cylinder is mounted on the crane frame. The piston rod of the climbing cylinder has a push pin that enters and exits the insertion hole to push the lifting column to move in a direction perpendicular to the crane frame.

[0011] Further configuration: The crane frame is provided with multiple through holes for inserting the lifting columns, and multiple lifting columns are provided corresponding to each through hole. The crane frame is also provided with two sets of climbing cylinders for each lifting column.

[0012] Further configuration: A lifting horizontal linkage mechanism is provided between two adjacent lifting columns. The lifting horizontal linkage mechanism includes a horizontal linkage and a double-headed lifting cylinder. Both ends of the horizontal linkage are provided with double-headed lifting cylinders. The extended ends of the piston rods at both ends of the double-headed lifting cylinders are provided with plug-in pins that can be inserted and engaged with the lifting columns.

[0013] Further configuration: One lifting frame is provided at each end of the length direction of the crane frame, and a transverse hydraulic cylinder is provided between the lifting frame and the crane frame for pushing the lifting frame to move along the length direction of the crane frame.

[0014] Further configuration: The lifting frame is equipped with rollers, and the lifting device includes a lifting frame and a movable pulley assembly. Two movable pulley assemblies are provided and located at both ends of the lifting frame, with each of the two movable pulley assemblies corresponding to a lifting frame at one end of the overhead crane frame.

[0015] Further configuration: The hanger includes an upper hanger beam and a lower hanger. The movable pulley group is located at both ends of the upper hanger beam. The lower hanger has a lifting claw on its bottom side and a hydraulic cylinder on the lower hanger to push the lifting claw to slide on the lower hanger.

[0016] Further configuration: The lower hanger is an H-shaped frame, the upper hanger beam is located above the middle connecting beam of the lower hanger, and a rotating structure is provided between the upper hanger beam and the lower hanger. The rotating structure includes an inner ring and an outer ring arranged coaxially, and the inner ring and the outer ring can rotate relative to each other. The outer ring is bolted to the upper hanger beam, and the inner ring is bolted to the lower hanger. The upper hanger beam is equipped with a motor for driving the inner ring to rotate.

[0017] Further configuration: the inner ring is provided with a full circle of internal teeth along its circumference, and the output shaft of the motor is provided with a gear that meshes with the internal teeth of the inner ring.

[0018] Further configuration: The hanger is equipped with an anchor seat, and the anchor seat is equipped with a plug-in pin for engaging with the insertion hole at the bottom of the lifting column. The lifting claw is anchored to the bridge structure by bolting, so that the lifting column is anchored to the bridge structure.

[0019] Compared with existing technologies, the solution in this application has the following advantages:

[0020] In the integrated lifting and jacking overhead crane system of this application, the self-climbing of the integrated lifting and jacking overhead crane system is achieved through the plug-in cooperation between the lifting column and the climbing cylinder in the continuous climbing mechanism, which drives the main truss connected to the integrated lifting and jacking overhead crane system to climb. There is no need to use a tower crane attached to the tower column to lift the crane, which makes construction convenient.

[0021] 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

[0022] 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:

[0023] Figure 1 This is a structural schematic diagram of one embodiment of the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of part A;

[0025] Figure 3 This is a side view of one embodiment of the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0026] Figure 4 This is a structural schematic diagram of the continuous climbing mechanism in the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0027] Figure 5 This is a schematic diagram of the connection structure between the continuous climbing mechanism and the double-anchor lifting device in the self-climbing crane with integrated lifting and jacking in this application;

[0028] Figure 6 This is a structural schematic diagram of the lifting device in the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0029] Figure 7 This is a top view of the lifting device in the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0030] Figure 8 This is a structural schematic diagram of the construction operation platform in the self-climbing crane with integrated lifting and jacking mechanism of this application;

[0031] Figure 9 This is a process flow diagram of the method for using the integrated lifting and jacking self-climbing crane of this application in the construction of a double-tower cable-stayed tower.

[0032] In the diagram, 1. Main truss; 2. Sliding support frame; 21. Sliding support main frame; 22. Sliding step; 221. Sliding seat; 222. Sliding cylinder; 23. Tower wall fixed hinged support; 231. Fixed seat; 232. Connecting seat; 3. Lifting and jacking integrated overhead crane system; 31. Lifting crane frame; 32. Continuous climbing mechanism; 321. Lifting column; 322. Climbing cylinder; 33. Lifting frame; 331. Roller; 332. Lateral movement cylinder; 34. Lifting device; 3411. Upper lifting beam; 3412. Lower lifting frame; 342. Lifting claw; 343. Movable pulley block 344. Hydraulic cylinder; 345. Rotary structure; 3451. Inner ring; 3452. Outer ring; 3453. Motor; 346. Anchor seat; 35. Drive mechanism; 36. Lifting and horizontal linkage mechanism; 361. Horizontal linkage; 362. Double-headed lifting cylinder; 4. Winch hoisting system; 41. Winch; 42. Wire rope; 43. Rope winding drum; 5. Construction operation platform; 51. Overhead crane operation and maintenance platform; 52. Upper maintenance platform; 53. Lower maintenance platform; 54. Horizontal sliding welding platform; 55. Longitudinal welding platform; 56. Repair platform; 57. Upper and lower passages. Detailed Implementation

[0033] 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.

[0034] Please see Figures 1 to 8 In view of the construction of existing single-tower or double-tower cable towers, this application proposes a self-climbing crane that integrates lifting and jacking. It can achieve self-climbing of the crane without the need for large lifting equipment and can be applied to cable tower construction in different geographical environments.

[0035] The integrated lifting and jacking self-climbing crane (hereinafter referred to as the "crane") includes a main truss 1, a sliding support frame 2, an integrated lifting and jacking overhead crane system 3, and a winch system 4. The main truss 1 is erected on top of a tower column that meets the construction requirements. The sliding support frame 2 is located below the main truss 1 and is used to anchor to the tower column to support the main truss 1. The integrated lifting and jacking overhead crane system 3 is located above the main truss 1 and is used to lift the bridge structure and enable the crane to self-climb. The integrated crane system 3 includes a crane frame 31, a continuous climbing mechanism 32, a lifting frame 33, and a lifting device 34. The crane frame 31 can move along the length of the main truss 1 to transport the hoisted bridge structure to the top of the tower column and lower it into position. The lifting frame 33 is mounted on the crane frame 31. The winch system 4 is connected to the lifting device 34 through the lifting frame 33, thereby using the lifting device 34 to hoist the structure.

[0036] The self-climbing crane with integrated lifting and jacking in this application is mainly used for the construction of cable towers, so the bridge structures lifted are tower column segments or tower column beams.

[0037] Specifically, the main truss 1 adopts a two-piece truss structure, comprising two parallel trusses and an intermediate horizontal bracing connecting the two trusses. The main truss 1 has an opening at at least one end along its length, and the opening is inclined downwards towards its centerline to facilitate the hoisting and lifting trolley system 3 to lift the bridge structure from the opening into the main truss 1 and transport it to the corresponding lowering position. Tracks (not shown) are provided at the top and bottom of the main truss 1 to guide the movement of the hoisting and lifting trolley system 3 above the main truss 1 and the sliding support frame 2 at the bottom of the main truss 1, respectively.

[0038] The sliding support frame 2, located at the bottom of the main truss 1, is the main load-bearing structure connecting the crane of this application to the tower column. The sliding support frame 2 includes a sliding support main frame 21, a sliding step 22, and a tower wall fixed hinge support 23. The length direction of the sliding support main frame 21 is perpendicular to the length direction of the main truss 1. The sliding step 22 is located between the main truss 1 and the sliding support main frame 21, so as to push the sliding support main frame 21 to move along the length direction of the main truss 1. The sliding step 22 includes two sliding seats 221 and a sliding cylinder 222 disposed between the two sliding seats 221. Both sliding seats 221 are engaged with a track located at the bottom of the main truss 1. Both sliding seats 221 are provided with a plug-in pin for engaging with the main truss 1. Among the two sliding seats 221, the sliding seat 221 closer to the sliding support main frame 21 is connected to the sliding support main frame 21. Thus, through the cooperation of the two sliding seats 221 and the sliding cylinder 222, the sliding support frame 21 can be moved along the length direction of the main truss 1.

[0039] The tower wall fixed hinge support 23 is hinged to the side of the sliding support main frame 21 near the tower column. The tower wall fixed hinge support 23 includes a fixed seat 231 and a connecting seat 232 that are hinged to each other. The fixed seat 231 is installed on the sliding support main frame 21, and the connecting seat 232 can be connected and fixed to the connecting parts pre-embedded in the side wall of the tower column by high-strength bolts.

[0040] Preferably, in this embodiment, a set of sliding support frames 2 is provided on each side of the tower column. The main truss 1 is supported by two sets of sliding support frames 2. Each set of sliding support frames 2 has two sets of sliding steps 22 corresponding to the two-piece truss structure of the main truss 1, so that the two sets of sliding steps 22 can push the sliding support frame 2 closer to or away from the tower column along the length direction of the main truss 1. At the same time, the sliding support main frame 21 is connected to the tower column by four tower wall fixed hinge supports 23 to ensure the connection strength between the sliding support main frame 21 and the tower column.

[0041] The sliding support main frame 21 of the two sets of sliding support frames 2 on both sides of the tower column approaches the tower column under the drive of the sliding step 22. The tower wall fixed hinge support 23 is anchored to the tower column, so that the total load of the crane of this application is transferred to the tower column through the sliding support frame 2 and then through the tower wall fixed hinge support 23, thereby providing effective support for the crane of this application.

[0042] The integrated crane system 3 enables the crane to climb and lift bridge structures. Specifically, the main truss 1 can climb to the top of an already installed tower segment under the drive of the integrated crane system 3 to install the next tower segment. The sliding support frame 2 rises and falls with the main truss 1. When the crane is lifting bridge structures, the fixed hinged supports 23 of the tower wall of the sliding support frame 2 are all anchored to the side wall of the tower column. When the crane is climbing, all the fixed hinged supports 23 are released from their constraints, and the sliding support frame 21 is driven away from the tower column by the sliding steps 22 to facilitate the lifting operation of the main truss 1.

[0043] The integrated crane system 3 can move along the length of the main truss 1. The integrated crane system 3 includes a crane frame 31, a continuous climbing mechanism 32, a lifting frame 33, and a lifting device 34. A drive mechanism 35 is provided between the crane frame 31 and the main truss 1. The drive mechanism 35 includes a drive seat and a drive cylinder. The drive seat cooperates with the rail at the top of the main truss 1, and the drive seat is provided with a plug-in pin for engaging with the rail. The drive cylinder is located between the drive seat and the crane frame 31. The intermittent extension and retraction of the drive cylinder pushes the crane frame 31 to move along the length of the main truss 1.

[0044] Furthermore, the crane frame 31 spans two trusses of the main truss 1, and two sets of drive mechanisms 35 are provided between the crane frame 31 and the main truss 1 corresponding to the two trusses, which improves the lateral stability of the crane frame 31.

[0045] The continuous climbing mechanism 32 is disposed in the crane frame 31, and includes a lifting column 321 and a climbing cylinder 322. The crane frame 31 has a through hole (not shown), through which the lifting column 321 passes. The lifting column 321 has multiple insertion holes (not shown) arranged along its length. The climbing cylinder 322 is disposed on the crane frame 31, and its piston rod extension end has a pin that engages with the insertion holes of the lifting column 321. Furthermore, at least two sets of climbing cylinders 322 are provided for each lifting column 321, and the lifting column 321 can be pushed along its length (vertical direction in this embodiment) by the alternating extension and retraction of different sets of climbing cylinders 322.

[0046] Preferably, this embodiment includes four lifting columns 321. Four through holes are correspondingly formed on the crane frame 31, and the line connecting the four through holes forms a rectangle. Furthermore, the through holes are square holes, and the lifting columns 321 are square columns. Therefore, in this embodiment, four sets of climbing cylinders 322 are arranged corresponding to the four faces of the square columns, with the four sets of climbing cylinders 322 arranged around the perimeter of the through holes. In addition, the four sets of climbing cylinders 322 are arranged in pairs, with the extension and retraction of the two sets of climbing cylinders 322 in the same pair synchronized, and they are positioned opposite each other on opposite faces of the lifting columns 321. It should also be noted that each set of climbing cylinders 322 includes at least one cylinder for pushing the lifting column 321, and the more cylinders present, the higher the support capacity for the lifting column 321. Therefore, in this embodiment, each group of climbing cylinders 322 is provided with three cylinders arranged side by side for synchronous extension and retraction, and the piston rods of the three cylinders are provided with mounting seats (not shown) at their extended ends, and the plug-in pins that are inserted and engaged with the lifting column 321 are fixed on the mounting seats.

[0047] Furthermore, a lifting horizontal linkage mechanism 36 is provided between adjacent pairs of the four lifting columns 321. The lifting horizontal linkage mechanism 36 includes a horizontal linkage 361 and a double-headed lifting cylinder 362. Both ends of the horizontal linkage 361 are equipped with double-headed lifting cylinders 362. Each double-headed lifting cylinder 362 has a retractable piston rod at both ends, and the extended ends of both piston rods are provided with insertion pins that can be inserted and engaged with the lifting columns 321. By connecting two adjacent lifting columns 321 through the lifting horizontal linkage 361 structure, the synchronous lifting of the lifting columns 321 can be ensured.

[0048] One lifting frame 33 is provided at each end of the crane frame 31, and the lifting frame 33 can move relative to the crane frame 31 along its length. Specifically, the crane frame 31 is provided with a transverse hydraulic cylinder 332 that extends and retracts along its length. The piston rod of the transverse hydraulic cylinder 332 is connected to the lifting frame 33. At the same time, guide rails (not shown) extending along their length are also provided at both ends of the crane frame 31. The lifting frame 33 is provided with guide grooves (not shown) that cooperate with the guide rails, so that the position of the lifting frame 33 on the crane frame 31 can be adjusted by the transverse hydraulic cylinders 332.

[0049] The lifting frame 33 is equipped with rollers 331. The winch lifting system 4 of this application mainly uses a winch 41 and a wire rope 42 for lifting operations. The wire rope 42 of the winch lifting system 4 is connected to the lifting device 34 after passing through the rollers 331 on the lifting frame 33. That is, the lifting frame 33 guides the wire rope 42. The lowering position of the wire rope 42 can be adjusted by adjusting the position of the lifting frame 33 through the horizontal movement cylinder 332 to adapt to the connection with lifting devices 34 of different specifications. The lifting device 34 includes a lifting frame and lifting claws 342. The lifting claws 342 are located below the lifting frame for connecting with the bridge structure to be lifted. The lifting frame is equipped with a movable pulley group 343 for connecting with the wire rope 42 passing through the lifting frame 33. Two sets of movable pulley groups 343 are provided at both ends of the lifting device 34, corresponding to the rollers 331 of the two lifting frames 33 on the crane frame 31 respectively. Therefore, the winch lifting system 4 is provided with two sets of wire ropes 42 to connect to the movable pulley groups 343 at both ends of the lifting device through the rollers 331 of the two lifting frames 33. That is, the wire ropes 42 lift the lifting device by connecting the movable pulley groups 343 at both ends of the lifting device, which has high lifting stability and improves the construction safety of lifting.

[0050] The lifting frame includes an upper lifting beam 3411 and a lower lifting frame 3412. A movable pulley block 343 is located at both ends of the upper lifting beam 3411, and lifting claws 342 are located on the bottom side of the lower lifting frame 3412. The lower lifting frame 3412 is an H-shaped frame, and a lifting device 34 is located at each of the four corners of the lower lifting frame 3412. Each lifting claw 342 is a four-claw lifting claw. Furthermore, a hydraulic cylinder 344 is installed on the lower lifting frame 3412 corresponding to each lifting claw 342. The hydraulic cylinders 344 push the lifting claws 342 to slide on the lower lifting frame 3412, thereby changing the position of the lifting claws 342 according to the lifting point position of the bridge structure to be lifted. In other words, the lifting device 34 is an adjustable lifting device 34 to adapt to the lifting operations of bridge structures of different specifications.

[0051] The upper suspension beam 3411 is located above the intermediate connecting beam of the lower suspension bracket 3412, and a rotating structure 345 is provided between the upper suspension beam 3411 and the lower suspension bracket 3412. The rotating structure 345 includes an inner ring 3451 and an outer ring 3452 arranged coaxially, and the inner ring 3451 and the outer ring 3452 can rotate relative to each other. The outer ring 3452 is bolted to the upper suspension beam 3411, and the inner ring 3451 is bolted to the lower suspension bracket 3412. The upper suspension beam 3411 is provided with... The motor 3453 drives the rotation of the inner ring 3451, which has a full circle of internal teeth. The output shaft of the motor 3453 is equipped with a gear that meshes with the internal teeth. When the motor 3453 rotates, it drives the upper lifting beam 3411 and the lower lifting frame 3412 to rotate relative to each other through gear meshing. The motor 3453 has a self-locking function, and when the motor 3453 stops rotating, the relative positions of the upper lifting beam 3411 and the lower lifting frame 3412 are fixed. The lifting frame of this application has a rotating structure 345 between the upper lifting beam 3411 and the lower lifting device 34, which can be used when the tower column segment gradually widens along the longitudinal direction of the bridge. During hoisting, the short side is located in the longitudinal direction of the bridge and the long side is located in the transverse direction of the bridge. After lifting to the installation position, it is rotated 90° for installation. Otherwise, the active cross bracing and temporary cross beam between the towers need to be installed on the transverse side of the tower column to avoid interfering with the installation of the tower column and cross beam.

[0052] The winch lifting system 4 includes a winch 41, a wire rope 42, and a take-up drum 43. Due to space constraints in the arrangement of the winch lifting system, in this embodiment, the winch 41 is mounted on the overhead crane frame 31 and moves with it, while the take-up drum 43 is located at the bottom of the tower column. Preferably, this application uses a friction winch 41. In operation, the wire rope 42 passes through the friction winch 41 without winding around it, thus separating the winch 41 from the take-up drum 43. One end of the wire rope 42 is wound onto the take-up drum 43, and the other end passes through the winch 41, then through the rollers 331 on the lifting frame 33, and connects to the movable pulley group 343 on the lifting device 34. The lifting device 34 is lifted by the friction between the winch 41 and the wire rope 42.

[0053] In this embodiment, each winch system 4 has a lifting capacity of 300 tons, and the diameter of the wire rope 42 is... Model Preferred The breaking strength of wire rope 42 is 99.4 tons, and the lifting speed under rated load is 6 m / min. The total length of wire rope 42 is 3000m × 4. The self-weight of a single friction type winch 41 is 30 tons, and the self-weight of a single rope winding machine is 10 tons.

[0054] Furthermore, after the crane of this application completes the hoisting of the current tower column segment, it can use the continuous climbing mechanism 32 to climb to the top of the current tower column segment. At this time, the lifting device 34 is kept fixed to the top of the tower column segment, and the climbing cylinder 322 is used to lower the lifting column 321 so that its bottom is anchored to the top of the lifting device 34. The lifting device 34 is a double-anchor type lifting device 34, which has four sets of anchor seats 346 corresponding to the positions of the four lifting columns 321, and each anchor seat 346 is provided with a plug-in pin. When the bottom of the lifting column 321 abuts against the lifting device 34, the anchoring between the lifting column 321 and the beam of the lifting device 34 can be achieved by inserting the plug-in pin into the insertion hole at the bottom of the lifting column 321. Furthermore, each group of anchor seats 346 provides at least two anchor seats 346 corresponding to each lifting column 321, ensuring the connection strength between the lifting column 321 and the lifting device 34 by anchoring at least two points of the lifting column 321. In this embodiment, each group of anchor seats 346 provides four anchor seats 346 to anchor one-to-one to the four sides of each lifting column 321, making the anchoring between the lifting column 321 and the lifting device 34 highly stable.

[0055] Next, the crane frame 31 is raised along the lifting column 321 by extending and retracting the climbing cylinder 322 on the crane frame 31. The raising is stopped once the desired position is reached. The main truss 1 can rise along with the crane frame 31. Before the main truss 1 rises with the crane frame 31, the anchorage between the sliding support frame 2 and the tower column should be released. The sliding support frame 2 slides a distance to completely separate from the tower column, allowing the main truss 1 to be relatively free from the tower column. At this point, the load of the crane is transferred to the top of the tower column for support via the lifting column 321 and the lifting device 34. Alternatively, before the crane frame 31 climbs, the restrictions between the crane frame 31 and the main truss 1 are first lifted. After the crane frame 31 has climbed to the correct position, the restrictions between the wire rope 42 and the lifting device 34 are lifted, and a temporary lifting device 34 is set at the end of the wire rope 42 used for lifting. The lifting frames 33 at both ends of the crane frame 31 are adjusted to adjust the position of the temporary lifting device 34 to connect with the main truss 1. At this time, the connection between the sliding support frame 2 and the tower column is released. The main truss 1 and the sliding support frame 2 are lifted to the position below the crane frame 31 using the temporary lifting device 34. Then the crane frame 31 is connected to the main truss 1, and the sliding support frame 2 is anchored to the currently installed tower column segment at the top, thereby completing the self-climbing of the crane of this application.

[0056] The self-climbing mechanism of the crane in this application mainly relies on the cooperation of the climbing cylinder 322 and the insertion pin. A multi-point synchronous control system is adopted to ensure the consistency and synchronicity of the actions of all lifting cylinders. In terms of the hydraulic system design, the synchronous control system adopts a mature load-sensitive electro-hydraulic proportional multi-way valve, which can realize point-to-point independent control of all lifting cylinders. During the lifting process, the electronic control system can obtain the position of the cylinder piston rod based on the displacement sensor installed on the cylinder, and adjust the oil supply of each proportional valve in real time according to the different cylinder positions. By adopting the PID algorithm (i.e., a control algorithm that combines proportional, integral, and derivative elements into one), synchronous control of all lifting cylinders is achieved throughout the entire process.

[0057] In summary, the self-climbing crane of this application integrates lifting and self-climbing functions, eliminating the need for additional large-scale lifting equipment. This solves the problems of high cost and slow progress associated with existing tower crane hoisting methods. After the construction of a single section of the structure is completed, the crane of this application is lifted to the next section hoisting position through a continuous lifting structure, and so on. The process is simple, saves construction time, and improves construction efficiency.

[0058] Furthermore, the self-climbing crane integrating lifting and jacking of this application is not only suitable for the construction of cable towers with single-tower structures, but also for the construction of cable towers with double-tower structures.

[0059] Specifically, when constructing a cable tower with a single tower column structure, the main truss 1 is erected at the top tower column segment where the construction height requirement has been met. The hoisting operation of the tower column segment can be completed by setting up a lifting and jacking integrated overhead crane system 3 on the main truss 1.

[0060] Therefore, the method of using the self-climbing crane with integrated lifting and jacking of this application includes the following steps:

[0061] S001. A self-climbing crane integrating lifting and jacking is installed at the top of the tower column that meets the construction height requirements. The main truss 1 of the self-climbing crane integrating lifting and jacking is erected on the top of the single tower column along the transverse bridge direction. Two sets of its sliding support frame 2 are arranged along the longitudinal bridge direction and located on both sides of the tower column. A set of crane-jacking integrated overhead crane system 3 and winch lifting system 4 are installed on the main truss 1.

[0062] S002. Using the integrated crane system 3 and winch system 4, the steel tower segment is lifted from one end of the main truss 1 along its length to the top of the installed tower column segment for installation.

[0063] The main truss 1 has an inclined opening at one end along its length to facilitate the hoisting of steel tower segments into the main truss 1 for transportation by the integrated hoisting and lifting trolley system 3 and the winch lifting system 4. The position of the integrated hoisting and lifting trolley system 3 on the main truss 1 is controllable, thereby ensuring that the hoisted steel tower segments are precisely aligned with the installed tower columns, and ensuring the installation accuracy of the tower columns.

[0064] During the lifting of steel tower segments by the integrated crane system 3 and winch lifting system 4, the sliding support frame 2 below the main truss 1 is anchored to the tower column, thereby ensuring that the main truss 1 has sufficient support capacity to realize the lifting operation of the steel tower segments.

[0065] S003. After the steel tower segment to be hoisted is installed, the integrated hoisting and jacking crane system 3 is used to move the integrated hoisting and jacking self-climbing crane to the top of the currently installed steel tower segment.

[0066] A known integrated crane lifting system includes a crane frame 31, a continuous climbing mechanism 32, a lifting frame 33, and a lifting device 34. The continuous climbing mechanism 32 includes a lifting column 321 and a climbing cylinder 322. When the crane of this application is climbing, the climbing cylinder 322 moves the lifting column 321 to abut against the lifting device 34 anchored to the top of the tower column. The bottom of the lifting column 321 and the lifting device 34 are anchored together by the insertion and removal pins of their anchoring seats 346. After ensuring that the lifting column 321, the lifting device 34, and the top of the tower column are anchored, the climbing cylinder 322 carries the crane frame 31 vertically to the top of the lifting column 321. The main truss 1 can climb along with the crane frame 31, and during the climbing process, the sliding support frame 2 at the bottom of the main truss 1 separates from the tower column. Alternatively, the crane frame 31 and the main truss 1 can be separated first. After the crane frame 31 has climbed to the correct position, the main truss 1 can be lifted to below the crane frame 31 using the lifting frames 33 at both ends of the crane frame 31 in conjunction with the temporary lifting equipment 34, and then reconnected. It should be noted that when lifting the main truss 1, the sliding support frame 2 at the bottom of the main truss 1 separates from the tower column. After the main truss 1 moves to the top of the currently installed steel tower segment, the sliding support frame 2 is anchored to the top of the current tower column, thereby completing the self-climbing of the integrated lifting and jacking self-climbing crane.

[0067] Repeat steps S002 and S003, that is, cyclically operate the climbing operation of the integrated crane system 3 for hoisting steel tower segments to extend the height of the tower column until the tower column construction is completed.

[0068] When constructing a cable-stayed tower with a double-tower structure, in addition to completing the extension construction of each individual tower, it is also necessary to construct the crossbeam between the two towers. Therefore, when using a self-climbing crane with integrated lifting and jacking mechanism to construct a cable-stayed tower with a double-tower structure, the main truss 1 of the crane needs to be erected on two adjacent towers along the transverse direction that already meet the construction height requirements. Simultaneously, two sets of sliding support frames 2 are provided corresponding to the two towers, with one set on each side of the corresponding tower to ensure that both ends of the main truss 1 are effectively supported.

[0069] In addition, when constructing a cable tower with a double-column structure, since the cable tower structure is more complex than that of a single-column structure, a construction operation platform 5 can be set on the main truss 1 to facilitate construction work. The construction operation platform 5 includes a crane operation and maintenance platform 51, an upper maintenance platform 52, a lower maintenance platform 53, a transverse sliding welding platform 54, a longitudinal welding platform 55, and a repair platform 56. The upper maintenance platform 52 is located on the top side of the main truss 1, the crane operation and maintenance platform 51 is located on the crane frame 31, and a vertical passage 57 is provided between the crane operation platform and the upper maintenance platform 52. The lower maintenance platform 53 is located on the lower side of the main truss 1. A vertical passage 57 is also provided between the repair platform 52 and the lower inspection platform 53. This vertical passage 57 is attached to the diagonal bracing of the main truss 1 to ensure the structural strength and stability of the vertical passage 57. The transverse sliding welding platform 54 is set along the transverse direction of the bridge, and the longitudinal welding platform 55 is set along the longitudinal direction of the bridge. The transverse sliding welding platform 54 and the longitudinal sliding welding platform are located at the top of the tower column so that the welding operation between the two tower column segments can be carried out after the tower column segment to be hoisted to the top of the installed tower column segment. The repair platform 56 is correspondingly set at the sliding support frame 2 and can be used for repairing the structure of the sliding support frame 2. A vertical passage 57 is provided between the repair platform 56 and the longitudinal welding platform 55. This application sets up vertical passages 57 to connect multiple platforms at different heights, and the edge protection adopts 1.5m high guardrails to facilitate workers to reach each construction operation platform 5 through the vertical passages 57 and complete operations at different positions.

[0070] Therefore, when constructing a cable tower with a double-tower structure, the crane of this application adds a construction operation platform 5 to the main truss 1. The joint design of the construction operation platform 5 and the main truss 1 enables the construction operation platform 5 to be lifted together with the main truss 1 under the drive of the continuous climbing mechanism 32, without the need to set up a conventional circumferential operation platform.

[0071] In addition, for cable towers with a double-tower structure, the main truss 1 of this application is equipped with two sets of integrated lifting and jacking crane systems 3, which can carry out the synchronous construction of the two towers, thereby speeding up the construction efficiency. Furthermore, the cable tower with a double-tower structure also includes a crossbeam, which can be lifted and installed using the two sets of integrated lifting and jacking crane systems 3.

[0072] Please combine Figure 9 The construction method for a twin-tower cable-stayed pylon includes the following steps:

[0073] First, install an integrated lifting and jacking self-climbing crane between two adjacent tower columns along the transverse direction of the bridge, meeting the construction height requirements.

[0074] The integrated lifting and jacking self-climbing crane includes a main truss 1, a sliding support frame 2, an integrated lifting and jacking overhead crane system 3, a winch lifting system 4, and a construction operation platform 5. The main truss 1 is erected along the transverse bridge direction between two adjacent tower columns that have met the construction height requirements. The sliding support frame 2 is located below the main truss 1 and is set in two sets corresponding to the two tower columns. The sliding support frame 2 is anchored to the top tower column segment to support the main truss 1 and its upper structure.

[0075] Two sets of integrated crane systems 3 are provided on the main truss 1, and the integrated crane systems 3 can move along the length of the main truss 1. The integrated crane system 3 includes a crane frame 31, a continuous climbing mechanism 32, a lifting frame 33, and a lifting device 34. The crane frame 31 is located on the main truss 1, and a drive mechanism 35 is provided between the two for pushing the crane frame 31 to move along the length of the main truss 1. The continuous climbing mechanism 32 is located on the crane frame 31 for lifting the crane frame 31 vertically. The lifting frame 33 moves along the length of the crane frame 31. The winch lifting system 4 is connected to the lifting device 34 through the lifting frame 33 for lifting the lifting device 34 to lift the steel tower segment.

[0076] The steel tower sections are lifted and extended using an integrated lifting and jacking self-climbing crane.

[0077] Specifically, the steel tower segment is hoisted to the top of the installed tower column segment using the integrated hoisting and lifting trolley system 3 and the winch lifting system 4 to extend its height. After the current top tower column segment is installed, the continuous climbing mechanism 32 of the integrated hoisting and lifting trolley system 3 is used to move the steel tower segment from the currently connected steel tower segment to the top of the installed steel tower segment, and then the next steel tower segment is hoisted.

[0078] The self-climbing process for cranes on double-tower cable-stayed towers is the same as that for cranes on single-tower cable-stayed towers. The lifting device 34, used to lift steel tower segments, is anchored to the top of the currently installed steel tower segment. Driven by the climbing cylinder 322, the lifting column 321 of the continuous climbing mechanism 32 abuts against the lifting device 34 anchored to the top of the installed steel tower segment. The lifting column 321 and the lifting device 34 are locked together by the anchoring seat 346 and the insertion pin located on top of the lifting device 34. After the crane frame 31, driven by the climbing cylinder 322, climbs to the target height of the lifting column 321, the sliding support frame 2 is released from its connection to the tower column. The main truss 1 is then lifted to below the crane frame 31 using the winch lifting system 4. Finally, the sliding support frame 2 is anchored to the currently installed tower segment via the tower wall fixed hinge support 23.

[0079] It is important to note that the self-climbing crane for the twin-tower cable-stayed tower needs to be installed and welded symmetrically after the steel tower segments of the two towers are completed. Furthermore, the self-climbing systems on both towers must operate synchronously to ensure the straight ascent of the main truss 1. Additionally, the integrated lifting and jacking self-climbing crane for twin-tower cable-stayed tower construction also includes a construction operation platform 5. This platform 5 is attached to the main truss 1, and its self-climbing system simultaneously lifts the main truss 1 and drives the construction operation platform 5 to climb.

[0080] Furthermore, during the tower column extension process, the integrated crane system 3 and winch lifting system 4 are used to hoist temporary crossbeams from bottom to top to different height positions of the tower columns to connect the two tower columns.

[0081] After both tower columns have been constructed to the target height, the upper and lower crossbeams are hoisted to the designated height positions in sequence from top to bottom and connected to the two tower columns.

[0082] Specifically, after the tower column is constructed to the preset tower top height, an assembly support is set at the base of the tower. The height of the assembly support is consistent with the installation position of the lower crossbeam. A self-climbing crane with integrated lifting and jacking is used to hoist the crossbeam segments onto the assembly support, assembling them into a complete upper crossbeam. Then, the same self-climbing crane is used to lift the entire upper crossbeam to the upper crossbeam installation position and install and fix it in place, thus completing the installation of the upper crossbeam.

[0083] Next, the crossbeam segments are lifted in three sections using a self-climbing crane with integrated lifting and jacking. First, the crossbeam segments at both ends of the lower crossbeam are lifted for installation, and finally the middle crossbeam segment is lifted to close the lower crossbeam, thus completing the installation of the lower crossbeam.

[0084] Finally, the temporary steel beams and the integrated self-climbing crane were dismantled in sequence to complete the construction of the double-tower steel cable tower.

[0085] After the construction of the tower columns and crossbeams of the twin-tower cable tower is completed, the assembly brackets used to assemble the crossbeams, the temporary crossbeams used to connect the two tower columns, and the self-climbing crane with integrated lifting and jacking are dismantled in sequence from bottom to top.

[0086] When dismantling the integrated lifting and jacking self-climbing crane, the integrated lifting and jacking overhead crane system 3 is installed at the top of the tower column. The winch lifting system 4 lifts the main truss 1 and disconnects the sliding support frame 2 at the bottom of the main truss 1 from the tower column. Then, the winch lifting system 4 is used to lower the main truss 1 to the ground as a whole, and then a crawler crane is used to dismantle the main truss 1.

[0087] Then, the integrated lifting and jacking trolley system 3 located at the top of the tower column is dismantled using a tower crane to complete the dismantling of the integrated lifting and jacking self-climbing crane of this application.

[0088] 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 crane system integrating lifting and jacking, characterized in that, Includes the crane frame, continuous climbing mechanism, lifting frame and lifting gear; The crane frame is mounted on the main truss of the self-climbing crane and can move along the transverse bridge direction; The continuous climbing mechanism is mounted on the crane frame for vertically lifting the crane frame. The lifting frame is mounted on the crane frame and can move along the length of the crane frame. The continuous climbing mechanism includes a lifting column and a climbing cylinder. The lifting column has multiple insertion holes arranged along its length. The climbing cylinder is mounted on the crane frame, and the piston rod of the climbing cylinder has a pin that extends into and exits the insertion hole to push the lifting column. The column moves in a direction perpendicular to the crane frame. The crane frame is provided with multiple through holes for inserting the lifting column. Multiple lifting columns are provided corresponding to the through holes. The crane frame is provided with two sets of climbing cylinders for each lifting column. When the crane is climbing, the lifting column is anchored to the lifting device anchored to the top of the bridge structure being lifted under the drive of the climbing cylinder, so that the lifting column, the lifting device and the top of the bridge structure are anchored together. The lifting frame is mounted on the crane frame and can move along the length of the crane frame. The lifting device is used to lift the bridge structure to be installed. The lifting device is connected to the lifting frame by a wire rope, and the lifting frame guides the wire rope that lifts the lifting device.

2. The integrated lifting and jacking overhead crane system according to claim 1, characterized in that, A lifting horizontal linkage mechanism is provided between two adjacent lifting columns. The lifting horizontal linkage mechanism includes a horizontal linkage and a double-headed lifting cylinder. Both ends of the horizontal linkage are provided with double-headed lifting cylinders. The extended ends of the piston rods at both ends of the double-headed lifting cylinders are provided with plug-in pins that can be inserted and cooperate with the lifting columns.

3. The integrated lifting and jacking overhead crane system according to claim 1, characterized in that, One lifting frame is installed at each end of the length direction of the crane frame.

4. The integrated lifting and jacking overhead crane system according to claim 3, characterized in that, The lifting frame is equipped with rollers, and the lifting device includes a lifting frame and a set of movable pulleys. Two sets of movable pulleys are provided and located at both ends of the lifting frame, and the two sets of movable pulleys correspond one-to-one with the lifting frame at both ends of the overhead crane frame.

5. The integrated lifting and jacking overhead crane system according to claim 4, characterized in that, The hanger includes an upper hanger beam and a lower hanger. The movable pulley group is located at both ends of the upper hanger beam. The lower hanger has a lifting claw on its bottom side and a hydraulic cylinder on the lower hanger to push the lifting claw to slide on the lower hanger.

6. The integrated lifting and jacking overhead crane system according to claim 5, characterized in that, The lower hanger is an H-shaped frame, and the upper hanger beam is located above the middle connecting beam of the lower hanger. A rotating structure is provided between the upper hanger beam and the lower hanger. The rotating structure includes an inner ring and an outer ring arranged coaxially, and the inner ring and the outer ring can rotate relative to each other. The outer ring is bolted to the upper hanger beam, and the inner ring is bolted to the lower hanger. The upper hanger beam is equipped with a motor for driving the inner ring to rotate.

7. The integrated lifting and jacking overhead crane system according to claim 6, characterized in that, The inner ring is provided with a full circle of internal teeth along its circumference, and the output shaft of the motor is provided with a gear that meshes with the internal teeth of the inner ring.

8. The integrated lifting and jacking overhead crane system according to claim 5, characterized in that, The lifting frame is equipped with an anchor seat, and the anchor seat is equipped with a plug-in pin for engaging with the insertion hole at the bottom of the lifting column. The lifting claw is anchored to the bridge structure by bolting, so that the lifting column is anchored to the bridge structure.

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