Hydraulic self-elevating integrated cable-stayed bridge lifting formwork

Abstract

The present application provides a hydraulic self-elevating integrated cable-stayed bridge lifting formwork, including a self-climbing system, a lifting system and a hydraulic lifting system; wherein the self-climbing system includes an anchoring seat embedded in the surface of the structure, a track attached to the anchoring seat and a climbing assembly hooked on the track, the climbing assembly is provided with a hook portion that matches the track gap, and the climbing assembly and the track are fixed by pin connection; the lifting system is connected to the climbing assembly, the lifting system climbs along the track through the climbing assembly, and the hydraulic lifting system is arranged on the lifting system and moves longitudinally or laterally relative to the lifting system to be used for lifting the subsequent structure to the top of the installation structure for installation. By setting a hydraulic self-elevating integrated cable-stayed bridge lifting formwork attached to the surface side wall of the structure, after the construction of a single section of the structure is completed, it is lifted to the lifting position of the next section by the lifting system of the formwork itself, and the cycle is repeated in sequence, the process operation is simple, the construction time is saved, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cable tower construction, and in particular to a hydraulic self-elevating integrated cable-stayed bridge lifting formwork. Background Art

[0002] The construction of cable-stayed bridge towers is a very important task. In recent years, with the advancement of science and technology, cable-stayed bridge steel towers have been used more and more. Traditional cable-stayed bridge tower construction often uses tower cranes as lifting tools. The weight of a single section of a steel tower is large, especially the lifting of the crossbeam (about 700t). At this time, the use of traditional lifting tools can no longer meet the requirements. Even if traditional lifting tools can meet the lifting requirements, the related costs are also relatively expensive. Summary of the invention

[0003] The purpose of the present application is to provide a hydraulic self-elevating integrated cable-stayed bridge lifting formwork that is easy to construct.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A hydraulic self-elevating integrated cable-stayed bridge lifting formwork, comprising a self-climbing system, a lifting system and a hydraulic lifting system; wherein:

[0006] The self-climbing system comprises an anchoring seat pre-buried in the surface of the structure, a track attached to the anchoring seat, and a climbing assembly hooked on the track, wherein the climbing assembly is provided with a hook portion that is gap-matched with the track, and the climbing assembly is fixed to the track by pin connection;

[0007] The lifting system is connected to the climbing assembly, and the lifting system climbs along the track through the climbing assembly. The hydraulic lifting system is arranged on the lifting system and can move longitudinally or laterally relative to the lifting system to be used for lifting the connection structure to the top of the installation structure for installation.

[0008] Further configuration: the climbing assembly includes a climbing frame lifting seat, a cylinder seat, a climbing frame guide seat and a lifting cylinder, the lifting cylinder is connected between the climbing frame lifting seat and the cylinder seat, the climbing frame lifting seat and the climbing frame guide seat are bolted and fixed to the lifting system, and the climbing frame lifting seat and the cylinder seat are movably connected to the track.

[0009] It is further configured that: the side of the track connected to the anchor seat is defined as the back side, the two side sides of the track are provided with anti-hook grooves along the longitudinal direction thereof, the groove bottom of the anti-hook groove is parallel to the longitudinal direction, the first groove wall of the anti-hook groove close to the front side of the track is perpendicular to the groove bottom, and the second groove wall close to the back side of the track is obliquely intersected with the groove bottom so that the cross-sectional width of the groove bottom of the anti-hook groove is smaller than the cross-sectional width of the groove opening;

[0010] The reverse hook portion of the climbing assembly includes a slider whose cross-sectional shape is adapted to the cross-sectional shape of the reverse hook groove, and a connecting arm connecting the end of the slider and the climbing assembly body.

[0011] It is further configured that a plug-in pin hole is provided between the anti-hook groove and the front side of the track perpendicular to the longitudinal direction of the track and passes through the two side surfaces of the track; the climbing frame lifting seat, the cylinder seat and the climbing frame guide seat are all provided with plug-in pin holes that are compatible with the plug-in pin holes of the track.

[0012] It is further configured that: a single-pin hydraulic plug-in and pull-out pin mechanism is provided on at least one connecting arm of the climbing frame lifting seat, and correspondingly, a plug-in and pull-out pin hole is provided on one connecting arm of the climbing frame lifting seat;

[0013] A dual-axis hydraulic plug-in pin mechanism is provided on at least one connecting arm of the oil cylinder seat, and correspondingly, two plug-in pin holes are provided on one connecting arm of the oil cylinder seat, and the spacing between the two plug-in pin holes of the same connecting arm on the oil cylinder seat is adapted to the spacing between the plug-in pin holes of the rail;

[0014] A plug-in pin hole is provided on a connecting arm of the climbing frame guide seat.

[0015] It is further configured that: an anti-falling shear block is provided on the front side of the track, and an anti-falling locking tongue which can be engaged with the anti-falling shear block is provided on the top of the climbing frame jacking seat.

[0016] It is further arranged that the anchoring seat is pre-buried in the surface of the structure at a preset vertical spacing, the two ends of the track are respectively attached to the anchoring seat, and two adjacent tracks are connected end to end and attached to the same anchoring seat.

[0017] Further configuration: the lifting system includes a climbing frame, a lifting truss and a lifting trolley, the climbing frame is bolted and fixed to the climbing frame lifting seat, the lifting truss is arranged on the top of the climbing frame, the top main longitudinal beam of the lifting truss extends along the transverse direction of the bridge or along the bridge to outside the installation range of the structure, so that the vertical cross-section of the lifting truss is arranged in an inverted trapezoidal shape, and the lifting trolley is arranged on the top of the lifting truss and can move along the longitudinal direction of the lifting truss.

[0018] Further arrangement: two climbing frames are provided on opposite sides of the same structure, each climbing frame is connected to two sets of self-climbing systems arranged side by side, each set of the self-climbing system includes at least three tracks and at least one group of climbing components, and the tracks are used alternately and cyclically.

[0019] It is further arranged that: a swing support and a sliding swing support are provided between the top of the climbing frame and the lifting truss;

[0020] Wherein, the swing support is located at the middle pressure rod of the lifting truss, and the swing support includes a climbing frame connection part and a truss front end connection part, the climbing frame connection part is fixed to the climbing frame, the truss front end connection part is fixed to the lifting truss, and the climbing frame connection part is hinged to the truss front end connection part;

[0021] The sliding and swinging support includes a climbing frame connecting part and a truss tail end connecting part, the climbing frame connecting part is fixed to the climbing frame, the climbing frame connecting part is hinged to the truss tail end connecting part, and the bottom main longitudinal beam of the lifting truss is located at its tail end and is provided with a truss reverse hook track extending along its longitudinal direction, and the truss tail end connecting part cooperates with the truss reverse hook track and can move along the truss reverse hook track.

[0022] Further arrangement: a horizontal constant reaction force mechanism is provided between the two climbing frames, and the horizontal constant reaction force system includes a steel strand connected to the two climbing frames, the end of the steel strand close to the middle pressure rod of the lifting truss is a fixed end, and the end of the steel strand close to the main pull rod at the rear of the lifting truss is a tensioning end.

[0023] Further configuration: the lifting truss is provided with two rows of first anti-hook rails extending along its longitudinal direction, both sides of the lifting trolley are attached to the first anti-hook rails, and the lifting truss is also provided with a first traveling jack for pulling the lifting trolley to move along the first anti-hook rails.

[0024] It is further provided that: the overhead crane comprises a lower sliding beam and an upper sliding beam;

[0025] Among them, the lower sliding beam is attached to the first anti-hook track, and the lower sliding beam is provided with a second anti-hook track extending along the transverse direction of the lifting truss. The upper sliding beam is attached to the second anti-hook track, and under the traction of the second walking jack provided on the lower sliding beam, the upper sliding beam drives the hydraulic lifting system to move transversely along the lifting truss.

[0026] Further configuration: the climbing frame and the lifting truss are both formed by bolting different rods.

[0027] Compared with the prior art, the solution of this application has the following advantages:

[0028] 1. In the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of the present application, by setting a lifting formwork attached to the surface side wall of the structure, the problem of high cost and slow progress of the existing tower crane lifting structure is solved. After the construction of a single section of the structure is completed, it is lifted to the next section lifting position through the lifting system of the formwork, and the cycle is carried out in sequence. The process operation is simple, which saves construction time and improves construction efficiency. In addition, the hydraulic self-elevating integrated cable-stayed bridge lifting formwork comes with an operating platform and safety protection facilities, which reduces the safety risks of high-altitude operations.

[0029] 2. In the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of the present application, after the construction of the structure is completed, the bridge deck crane can be obtained by simply modifying the hydraulic self-elevating integrated cable-stayed bridge lifting formwork, so as to lift the steel box girder, thereby reducing the project cost.

[0030] 3. In the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of the present application, by arranging a sliding swing bearing and a swing bearing between the climbing frame and the lifting truss, it is ensured that during the construction of the inclined tower section with a variable cross-section, the sliding swing bearing and the swing bearing can change the angle between the climbing frame and the lifting truss to adapt to the change in the distance between the climbing frames on both sides, so that the lifting truss remains in a horizontal state, thereby ensuring the stability of the lifting structure of the hydraulic self-elevating integrated cable-stayed bridge lifting formwork.

[0031] 4. In the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of the present application, a horizontal constant reaction force mechanism is set between the climbing frames on both sides of the same structure, and the horizontal constant reaction force mechanism constrains the two sets of climbing frames in the horizontal inward direction, thereby eliminating the uncertainty of the relative lateral position between the climbing frame and the track during the climbing process of the lifting formwork due to the influence of the horizontal force, and improving the overall stability of the lifting formwork

[0032] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0034] Figure 1 This is a structural schematic diagram of the hydraulic self-elevating integrated cable-stayed bridge lifting formwork for this application;

[0035] Figure 2 for Figure 1 A magnified schematic diagram of part A;

[0036] Figure 3 A structural schematic diagram of the hydraulic self-elevating integrated cable-stayed bridge lifting formwork for this application is used to illustrate the lifting and installation position;

[0037] Figure 4 for Figure 3 An enlarged schematic diagram of part B;

[0038] Figure 5 for Figure 3 An enlarged schematic diagram of the C portion;

[0039] Figure 6 This is a structural schematic diagram of the self-climbing system in the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of this application;

[0040] Figure 7 This is a side view of the self-climbing system in the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of this application;

[0041] Figure 8 This is a schematic diagram of the coordination relationship between the climbing components and the track in the hydraulic self-elevating integrated cable-stayed bridge lifting formwork of this application;

[0042] Fig. 9 A schematic diagram of a climbing frame in a hydraulic self-elevating integrated cable-stayed bridge lifting formwork for this application;

[0043] Fig.10 A schematic diagram of the lifting truss of the formwork for the hydraulic self-elevating integrated cable-stayed bridge of this application;

[0044] Fig.11 This is a schematic structural diagram of an embodiment of a bridge crane of the present application.

[0045] In the figure, 1, self-climbing system; 11, anchor seat; 12, track; 121, upper load-bearing shear block; 122, lower load-bearing shear block; 123, reverse hook groove; 124, plug-in pin hole; 125, anti-fall shear block; 130, reverse hook part; 1301, slider; 1302, connecting arm; 131, climbing frame lifting seat; 1311, single-axis hydraulic plug-in pin mechanism; 1312, anti-fall lock tongue; 13 13. Pin hole; 132. Cylinder seat; 1321. Double-axis hydraulic pin hole mechanism; 1322. Pin hole; 133. Climbing frame guide seat; 1331. Pin hole; 2. Lifting system; 21. Climbing frame; 211. Horizontal constant reaction force mechanism; 22. Lifting truss; 221. First anti-hook track; 222. Truss anti-hook track; 23. Lifting crane; 231. Lower sliding beam; 2 311, second anti-hook track; 232, upper sliding beam; 241, swing support; 2411, climbing frame connection; 2412, truss front end connection; 242, sliding swing support; 2421, climbing frame connection; 2422, truss tail end connection; 3, hydraulic lifting system; 41, lifting cylinder; 42, first walking jack; 43, second walking jack; 10000, hydraulic Self-elevating integrated cable-stayed bridge lifting formwork; 20000, bridge deck crane; 20001, crane truss; 20002, crane overhead crane; 20003, crane jack mechanism; 20004, hoisting device; 20005, track beam; 20006, sliding shoe; 20007, traveling cylinder; 20008, front supporting cylinder; 20009, steel support; 20010, rear supporting cylinder. DETAILED DESCRIPTION

[0046] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0047] In order to solve the problems of high cost and slow progress in the existing tower crane installation of steel towers, steel beams and other structures, please combine Figures 1 to 10 The present application discloses a hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000, which can effectively realize the rapid construction of cable-stayed bridge steel tower columns, is conducive to closed construction and safety management, improves construction efficiency, and reduces construction costs.

[0048] Please combine Figure 1 and Figure 3The hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 includes a self-climbing system 1, a lifting system 2 and a hydraulic system, wherein the lifting system 2 is connected to the self-climbing system 1 to realize the climbing of the lifting system 2 along the height direction of the structure through the self-climbing system 1, and the hydraulic system includes a hydraulic lifting system 3 and a self-climbing hydraulic system, the hydraulic lifting system 3 is arranged on the top of the lifting system 2, and the hydraulic lifting system 3 can move horizontally or longitudinally relative to the lifting system 2 to hoist the subsequent structure to the construction position on the top of the installed structure for installation, and the self-climbing system 1 is mainly responsible for the lifting and climbing work of the whole machine, and controls the movement of the hydraulic lifting system 3 relative to the lifting system 2. In addition, the hydraulic system of the present application adopts an open system, that is, after the hydraulic pump sucks out the hydraulic oil from the oil tank, it outputs it to each actuator, and the return oil of each actuator directly returns to the oil tank, which has a simple structure and good heat dissipation and oil filtering conditions.

[0049] See also Figure 6 and Figure 7 The self-climbing system 1 includes an anchor seat 11 embedded in the surface of the structure, a track 12 attached to the anchor seat 11, and a climbing component hooked on the track 12. The climbing component and the track 12 are clearance-fitted. In addition, the climbing component and the track 12 can be fixed by pinning.

[0050] The anchoring seats 11 are provided in plurality and are pre-buried on the surface of the structure at a preset vertical interval. The two ends of the track 12 are respectively attached to the anchoring seats 11. Two adjacent tracks 12 are connected end to end and attached to the same anchoring seat 11. The anchoring seat 11 and the track 12 are connected by bolts. In addition, the specifications of the anchoring seats 11 corresponding to the surfaces of structures at different heights are different, so that the arrangement of the track 12 can meet the climbing requirements of the climbing assembly.

[0051] Preferably, the track 12 in this embodiment is a standard 4m long track, and the vertical spacing between two adjacent anchor seats 11 is 4m. In addition, the self-climbing system 1 includes at least three tracks 12, and the tracks 12 can be used alternately. When using them alternately, it is only necessary to transfer the lowest track 12 to the top of the highest track 12 for splicing. In this embodiment, there are four tracks.

[0052] Please combine Figure 1 and Figure 2 The track 12 is also provided with an upper load-bearing shear block 121 and a lower load-bearing shear block 122 respectively abutting against the anchor seat 11 to transfer the load of the track 12 to the anchor seat 11.

[0053] In addition, the side of the track 12 connected to the anchor seat 11 is defined as the back side, and the two side surfaces of the track 12 are provided with anti-hook grooves 123 along its longitudinal direction, and the climbing component is provided with an anti-hook portion 130 that is gap-matched with the anti-hook grooves 123.

[0054] Specifically, the bottom of the reverse hook groove 123 is parallel to the longitudinal direction of the track 12, the first groove wall of the reverse hook groove 123 close to the front of the track 12 is perpendicular to the bottom of the groove, and the second groove wall close to the back of the track 12 is obliquely intersected with the bottom of the groove, so that the cross-sectional width of the bottom of the reverse hook groove 123 is smaller than the cross-sectional width of the notch. The reverse hook portion 130 of the climbing assembly includes a slider 1301 whose cross-sectional shape is adapted to the cross-sectional shape of the reverse hook groove 123, and a connecting arm 1302 connecting the end of the slider 1301 and the main body of the climbing assembly.

[0055] Among them, the climbing assembly includes a climbing frame lifting seat 131, a cylinder seat 132 and a climbing frame guide seat 133, a lifting cylinder 41 is provided between the climbing frame lifting seat 131 and the cylinder seat 132, the cylinder bottom of the lifting cylinder 41 is fixedly connected to the cylinder seat 132, and the protruding end of its piston rod is connected to the climbing frame lifting seat 131, the climbing frame lifting seat 131 and the lifting system 2 are fixed by bolting, and the climbing frame lifting seat 131 and the cylinder seat 132 are movably connected to the track 12, so that the climbing frame lifting seat 131 is intermittently pushed by the lifting cylinder 41 to drive the lifting system 2 to climb along the track 12.

[0056] The climbing frame lifting seat 131 and the cylinder seat 132 can be pinned and fixed to the track 12. The track 12 is provided with a plug-in pin hole 124 perpendicular to the longitudinal direction of the track 12 and passing through the two sides of the track 12 between its anti-hook groove 123 and its front side. At the same time, a plug-in pin hole that is compatible with the plug-in pin hole 124 of the track 12 is provided on the connecting arm 1302 of the climbing component.

[0057] Preferably, the climbing frame lifting seat 131, the cylinder seat 132 and the climbing frame guide seat 133 are symmetrically provided with two sliders 1301 and two connecting arms 1302, and a plug-in pin mechanism is provided on at least one connecting arm 1302 of the climbing frame lifting seat 131 and the cylinder seat 132, so that the plug-in pin mechanism cooperates with the plug-in pin hole 124 of the track 12 to realize the movable connection between the climbing frame lifting seat 131 and the cylinder seat 132 and the track 12. In addition, the extension stroke of the piston rod of the lifting oil cylinder 41 is a multiple of the spacing between two adjacent plug-in pin holes 124 of the track 12, that is, the distance moved each time by the climbing frame lifting seat 131 and the cylinder seat 132 is a multiple of the spacing between two adjacent plug-in pin holes 124 of the track 12, so that the plug-in pin mechanism of the climbing frame lifting seat 131 and the cylinder seat 132 can just cooperate with the plug-in pin hole 124 of the track 12 for pin connection.

[0058] A single-axis hydraulic plug-in pin mechanism 1311 is provided on at least one connecting arm 1302 of the climbing frame lifting seat 131. The single-axis hydraulic plug-in pin mechanism 1311 pushes a plug-in pin through an oil cylinder to complete the connection and disconnection between the climbing frame lifting seat 131 and the track 12. Correspondingly, a plug-in pin hole 1313 for the plug-in pin to pass through should be provided on the connecting arm 1302 of the climbing frame lifting seat 131 corresponding to the single-axis hydraulic plug-in pin mechanism 1311. At least one connecting arm 1302 of the cylinder seat 132 is provided with a double-axis hydraulic plug-in pin mechanism 1321, and the double-axis hydraulic plug-in pin mechanism 1321 completes the connection and disconnection between the cylinder seat 132 and the track 12 by pushing two plug-in pins through an oil cylinder. The connecting arm 1302 of the cylinder seat 132 corresponding to the double-axis hydraulic plug-in pin mechanism 1321 should be provided with two plug-in pin holes 1322 for the plug-in pins to pass through, and the spacing between the two plug-in pin holes 1322 on the same connecting arm 1302 matches the spacing between two adjacent plug-in pin holes 124 of the track 12. In addition, the double-axis hydraulic plug-in pin mechanism 1321 provided on the cylinder seat 132 is connected to the track 12 by two pin shafts, so that when the lifting cylinder 41 lifts the climbing frame lifting seat 131, the cylinder seat 132 has sufficient supporting force to ensure the stability of the climbing assembly and the lifting system 2 during the climbing process.

[0059] As a preferred embodiment, the distance between two adjacent plug-in and pull-out pin holes 124 of the track 12 is 400 mm, and the stroke distance of the piston rod of the jacking cylinder 41 is 800 mm.

[0060] The climbing frame guide seat 133 is arranged below the oil cylinder seat 132. The climbing frame guide seat 133 can guide the climbing of the lifting system 2 and also can act as an anti-hook to improve the stability of the lifting system 2 climbing on the track 12 through the climbing assembly. A plug-in pin hole 1331 is provided on the connecting arm 1302 of the climbing frame guide seat 133, so that when the climbing frame lifting seat 131 or the oil cylinder seat 132 fails or the oil cylinder is maintained, the climbing frame guide seat 133 and the track 12 can be pinned by temporarily adding a pin shaft to safely lock the self-climbing system 1.

[0061] Furthermore, the front of the track 12 is also provided with a plurality of anti-falling shear force blocks 125 arranged along the longitudinal direction thereof, and the top of the climbing frame lifting seat 131 is provided with an anti-falling lock tongue 1312 that can be engaged with the anti-falling shear force blocks 125, and the anti-falling lock tongue 1312 includes a wedge block hinged to the climbing frame lifting seat 131 through a pin. When the climbing frame lifting seat 131 moves downward relative to the track 12, the wedge block can be engaged with the anti-falling shear force block 125, so that when the climbing frame lifting seat 131 accidentally falls, the anti-falling lock tongue 1312 can quickly perform emergency locking on the lifting formwork. In the process of the climbing frame lifting seat 131 climbing upward, the anti-falling lock tongue 1312 can be pushed out of the range of the anti-falling shear force block 125 to release the locking of the climbing frame lifting seat 131 and the track 12.

[0062] Furthermore, the distance between two adjacent anti-falling shear blocks 125 is equal to the distance between two adjacent plug-in pin holes 124 of the track 12 , that is, the distance between two adjacent anti-falling shear blocks 125 is 400 mm.

[0063] See also Figure 1 and Figure 3 The lifting system 2 includes a climbing frame 21, a lifting truss 22 and a lifting trolley 23. The lifting truss 22 is arranged on the top of the climbing frame 21, and the lifting trolley 23 is arranged on the top of the lifting truss 22 and can move along the longitudinal direction of the lifting truss 22.

[0064] Two climbing frames 21 are provided on opposite sides of the same structure, and each climbing frame 21 is connected to two sets of the self-climbing systems 1 arranged side by side, and each set of the self-climbing system 1 includes a row of tracks 12 and at least one set of the climbing components. Preferably, each row of tracks 12 includes at least three tracks 12 connected end to end, and the tracks 12 are used alternately, and the climbing components in this embodiment are provided with two upper and lower groups. The two sets of climbing components are connected to the lifting system 2 for climbing, which can ensure the stability of the climbing process of the lifting system 2. In addition, when one of the two sets of climbing components fails, the remaining set of climbing components can continue to work. Considering the redundant design, using one set of climbing components can also perform normal work.

[0065] As a further preference, the spacing between the two rows of tracks 12 of the two sets of self-climbing systems 1 located on the same side is 3300 mm, and the two rows of tracks 12 are respectively connected to the two sides of the climbing frame 21, which meets the structural force requirements of the climbing frame 21 and ensures the stability of the climbing frame 21 during the climbing process.

[0066] Furthermore, since the climbing frames 21 on both sides of the structure will be affected by horizontal forces during the jacking, crawling and lifting operations of the lifting formwork, a horizontal constant reaction force mechanism 211 is set on the climbing frames 21 on both sides of the structure. The horizontal constant reaction force mechanism 211 constrains the two groups of climbing frames 21 in the horizontal inward direction, thereby eliminating the uncertainty of the relative lateral position between the climbing frames 21 and the track 12 during the crawling of the lifting formwork due to the influence of horizontal forces, thereby improving the overall stability of the lifting formwork.

[0067] Specifically, the horizontal constant reaction force mechanism 211 includes a steel strand connecting two groups of the climbing frames 21, and one end of the steel strand close to the middle pressure rod of the lifting truss 22 is a fixed end, and one end of the steel strand close to the rear main pull rod of the lifting truss 22 is used as a tensioning end, so that the overall hydraulic system of the lifting formwork is used to provide power, the accumulator is used to maintain pressure, and the steel strand is tensioned by the oil cylinder to achieve the horizontal constant reaction force function.

[0068] Please combine Fig. 9 The lifting truss 22 is a truss structure, which is connected by rods of different specifications. The main longitudinal beam of the lifting truss 22 is connected with the main tension and compression rods and the end cross beams by flanges, and the side braces, top braces and tail cross braces are connected with the main diagonal rods by pins to facilitate disassembly, assembly and modification.

[0069] Specifically, the top main longitudinal beam of the lifting truss 22 extends outside the installation range of the structure along the transverse direction or the longitudinal direction of the bridge, so that the vertical cross-section of the lifting truss 22 is an inverted right-angled trapezoid arranged on the top of the two climbing frames 21, and no diagonal braces are arranged on the inclined surface of the lifting truss 22. The hydraulic lifting system 3 can hoist the subsequent structure from the inclined surface of the lifting truss 22 and enter the inner side of the lifting truss 22, so as to be installed with the installed structure.

[0070] Please combine Figure 3 , Figure 4 and Figure 5 The lifting trolley 23 is arranged on the top of the lifting truss 22 and moves along the longitudinal direction of its main longitudinal beam. At the same time, a swing support 241 and a sliding swing support 242 are arranged between the top of the climbing frame 21 and the lifting truss 22.

[0071] The swing support 241 is located at the middle pressure rod of the lifting truss 22, and the swing support 241 includes a climbing frame connection part 2411 and a truss front end connection part 2412. The climbing frame connection part 2411 is fixed to the climbing frame 21, and the truss front end connection part 2412 is fixed to the lifting truss 22, and the climbing frame connection part 2411 is hinged to the truss front end connection part 2412. The swing support 241 can change the angle between the climbing frame 21 and the lifting truss 22, so that the lifting truss 22 is always in a horizontal force state. The sliding swing support 242 includes a climbing frame connection part 2421 and a truss tail end connection part 2422, wherein the climbing frame connection part 2421 is fixed to the climbing frame 21, and the climbing frame connection part 2421 is hinged to the truss tail end connection part 2422, and the bottom main longitudinal beam of the lifting truss 22 is provided with a truss reverse hook track 222 extending along its longitudinal direction at its tail end, and the truss tail end connection part 2422 cooperates with the truss reverse hook track 222 and can move along the truss reverse hook track 222. The sliding swing support 242 can change the angle between the climbing frame 21 and the lifting truss 22, and can automatically adapt to the spacing between two rows of climbing frames 21 of the same structure, so that the lifting truss 22 is always in a horizontal stress state, which is conducive to the lifting of the structure.

[0072] The lifting trolley 23 includes a lower sliding beam 231 and an upper sliding beam 232. The lower sliding beam 231 extends in a longitudinal direction perpendicular to the main longitudinal beam of the lifting truss 22. The top main longitudinal beam of the lifting truss 22 is provided with a first anti-hook rail 221 and a first traveling jack 42 extending in its longitudinal direction. Two first anti-hook rails 221 are arranged side by side. Both sides of the lower sliding beam 231 are respectively attached to the two first anti-hook rails 221. The piston rod of the first traveling jack 42 is connected to the lower sliding beam 231, and its cylinder is connected to the first anti-hook rail 221, so that the lower sliding beam 231 is pulled by the first traveling jack 42 to realize the longitudinal movement of the lifting trolley 23 along the lifting truss 22.

[0073] The lower sliding beam 231 is provided with a second reverse hook track 2311 and a second traveling jack 43 extending along its longitudinal direction. The upper sliding beam 232 is attached to the second reverse hook track 2311 and is pushed by the second traveling jack 43 to move along the second reverse hook track 2311.

[0074] At the same time, locking devices (not shown in the figure, the same below) are provided on the first anti-hook rail 221 and the second anti-hook rail 2311 to respectively lock the lower sliding beam 231 and the upper sliding beam 232.

[0075] The hydraulic lifting system 3 is arranged on the upper sliding beam 232, and can realize lateral and longitudinal movement along the lifting truss 22 under the action of the first traveling jack 42 and the second traveling jack 43, so as to lift the subsequent structure from one side of the installed structure to the top of the installed structure for installation.

[0076] Preferably, the hydraulic lifting system 3 in this embodiment adopts a 350t×2 hydraulic rapid lifting system, which has two sets of jack mechanisms respectively located at both ends of the upper sliding beam 232 for synchronous lifting, and the maximum traction force can reach 350t.

[0077] In addition, it is known that the self-climbing hydraulic system of the present application is responsible for the jacking and climbing of the entire machine, the longitudinal movement of the sliding crane, the lateral movement of the lifting crane 23, and the action of the plug-in and pull-out pin mechanisms of the entire equipment, that is, the above-mentioned jacking cylinder 41, the cylinder of the plug-in and pull-out pin mechanism, the first traveling jack 42, the second traveling jack 43, and the cylinder for tensioning the steel frame line in the horizontal constant reaction force mechanism 211 all belong to the self-climbing hydraulic system, and the hydraulic station of the self-climbing hydraulic system is installed on the working platform in the middle of the climbing frame 21 to provide pressure oil to each cylinder and jack.

[0078] The hydraulic self-lifting integrated cable-stayed bridge lifting formwork 10000 of the present application also includes an electrical system (not shown in the figure, the same below), which specifically includes three major systems: a whole machine electrical control system, a safety monitoring system and a remote video monitoring system.

[0079] Among them, the control object of the electrical control system of the whole machine mechanism is the working mechanism of the whole machine, including the power supply control system and the lifting and lowering of the climbing frame 21, the longitudinal and transverse movement of the hoisting crane 23, etc. It has high safety, reliability and complete functions to prevent misoperation, and can meet the requirements of large-scale stable speed regulation of the crane, and can also meet the high-precision synchronous control of the lifting process of the climbing frame 21. The control part of the system can be implemented by Siemens programmable controller, which has the characteristics of advanced control, high reliability, and convenient programming and modification. PLC is the core of the entire speed regulation system, responsible for the logical control of all input and output control points of the system. PLC is powered by AC220V. PLC is mainly used to receive the main command signal, send control signals of each mechanism, and control the action of each mechanism.

[0080] The safety monitoring system is programmed into a safety interlock state. The PLC can automatically identify and block erroneous operating instructions or quickly cut off faulty circuits, thereby effectively preventing the occurrence of safety accidents. This machine is equipped with a load limiter. When the hoisting weight exceeds the specified value of the load, it will automatically cut off the dangerous direction of the lifting and send out an audible and visual alarm to remind the operator that the crane can only run in a safe direction at this time. The safety monitoring system also includes an anti-fall speed measurement power release system. When the lifting speed of the self-climbing system 1 is greater than the set value, the power system automatically cuts off the power for protection. In addition, by setting strain gauges at special stress points of the whole machine, the stress state of each main stress-bearing component can be detected in real time.

[0081] The remote video monitoring system is installed with cameras on two climbing frames 21 and the crane trolley 23 on the same structure to monitor the position of the plug-in and pull-out pins of the self-climbing system 1, the operation of the climbing frame 21, and the continuous top working condition; a camera is installed on the electrical room to monitor the situation inside the electrical room, and a camera is also installed on the main beam of the crane truss 22 to monitor the overall lifting situation. The video monitor is placed in the driver's cab for easy viewing by the operator. At the same time, the video data is transmitted to the designated position of the bridge tower by wire, and remote video data sharing is performed as needed.

[0082] After the lifting formwork completes the installation of the steel tower, since the climbing frame 21, the lifting truss 22 and the lifting crane 23 of the present application are all assembled with rods, the lifting formwork can be dismantled to the bottom of the tower and then transformed to form a bridge crane 20000.

[0083] Specifically, please combine Fig.11, using the lifting truss 22 of the original lifting formwork and its upper structure, select the truss crossbeam and the sliding beam of the overhead crane of the appropriate length according to the gauge requirements of the bridge crane 20000, and at the same time change the two sets of jack mechanisms of the hydraulic lifting system 3 into one set of jack mechanisms, and the jack mechanism is located in the middle position of the lifting overhead crane 23.

[0084] That is, the bridge crane 20000 includes a crane truss 20001, a crane trolley 20002, a crane jack mechanism 20003 and a sling 20004. The structure of the crane trolley 20002 is the same as that of the lifting trolley 23 for lifting the formwork. The crane jack mechanism 20003 is arranged on the crane trolley 20002, so that under the action of the crane trolley 20002, the crane jack mechanism 20003 can move along the lateral or longitudinal direction of the crane truss 20001. The crane jack mechanism 20003 is connected to the sling 20004 through a steel strand. The sling 20004 is composed of a steel strand anchor end, a main beam, a shoulder beam, an adjustment cylinder, etc. Its movable steel strand anchor end changes the position of the lifting point by the extension and contraction of the cylinder to achieve the purpose of accurately adjusting the position of the lifting point. Both ends of the shoulder beam are provided with articulated lifting ears.

[0085] A track beam 20005 is provided at the bottom of the crane truss 20001. The track beam 20005 is placed at the designed support position of the steel box beam. A walking jacking reaction seat (not shown in the figure, the same below) and a standard hole position (not shown in the figure, the same below) are provided on the track beam 20005. Four sliding shoes 20006 are provided at the bottom of the crane truss 20001 to support the track beam 20005. The sliding shoes 20006 are composed of a slider and an anti-hook device. The sliding shoes 20006 are groove-shaped structures with a slider installed at the bottom to reduce friction resistance during walking. The anti-hook device lifts the track beam 20005 when moving the track beam 20005 forward to ensure that the track beam 20005 does not drag on the steel box beam. The jacking cylinder reaction seat and the track beam 20005 are connected and disconnected by plug-in pins.

[0086] A traveling cylinder 20007 is provided between the crane truss 20001 and the track beam 20005 so that the sliding shoe 20006 of the bridge crane 20000 can slide on the track beam 20005 to realize the movement of the whole machine. The cylinder bottom of the traveling cylinder 20007 is hinged to the track beam 20005, and the protruding end of the piston rod is hinged to the sliding shoe 20006. In the present embodiment, the maximum sliding distance of the bridge crane 20000 on the track beam 20005 is 3.2m at one time.

[0087] At the same time, the bridge crane 20000 is also provided with a whole machine anchoring system, which includes a front supporting top cylinder 20008 (with a spiral top function), a steel support 20009, a rear supporting top cylinder 20010 and a rear anchor mechanism (not shown in the figure, the same below). Specifically, two sets of steel supports 20009, two sets of front supporting top cylinders 20008, two sets of rear supporting top cylinders 20010 and two sets of rear anchor mechanisms are installed at the bottom of the bridge crane 20000. When the bridge crane 20000 is moving, the bridge crane 20000 can be controlled by controlling the front supporting top cylinder 20008 and the rear supporting top cylinder 20010 to achieve the beam erection state of the bridge crane 20000. At this time, the steel support 20009, the front supporting top cylinder 20008 and the rear anchor mechanism are subjected to force. When moving, the crane beam erection state is achieved by controlling the front supporting top cylinder 20008 and the rear supporting top cylinder 20010. The rear anchor mechanism includes an anchor beam arranged at the tail of the main longitudinal beam at the bottom of the crane truss 20001, which can anchor the tail of the bridge crane 20000 to the steel beam bridge deck and withstand the upward pulling force when the bridge crane 20000 is working.

[0088] The process of the bridge crane 20000 moving is:

[0089] First, the bridge crane 20000 is supported on the reference plane by the front supporting cylinder 20008 and the rear supporting cylinder 20010, and the supporting cylinder is lifted up so that the track beam 20005 of the bridge crane 20000 is in a beam erecting state; then, the track beam 20005 is moved forward by controlling the telescopic action of the traveling cylinder 20007; then the supporting cylinder is retracted to place the track beam 20005 on the reference plane and anchor it to the reference plane through the rear anchor mechanism. At this time, the deadweight of the whole machine is borne by the sliding shoe 20006 on the track beam 20005; through the telescopic action of the traveling cylinder 20007, the bridge crane 20000 slides forward along the track beam 20005 to achieve the purpose of longitudinal travel.

[0090] After the lifting formwork of the present application is transformed into the bridge crane 20000, its hydraulic system is divided into three parts: the bridge crane hydraulic system, the lifting jack system and the sling hydraulic system. The three systems are independent of each other and form a system, mainly to adapt to the working characteristics of the parts being relatively far apart. The bridge crane hydraulic system and the crane jack system can use the original system of the lifting formwork, thereby reducing the construction cost. The sling hydraulic system needs to be newly manufactured, and the hydraulic station is placed on the main distribution beam of the sling 20004 to provide a pressure oil source for the lifting point adjustment cylinder.

[0091] In summary, the hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 of the present application solves the problems of high cost and slow progress of the existing tower crane lifting structure. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 is attached to the surface side wall of the structure, and has its own operating platform and safety protection facilities. After the construction of a single section of the structure is completed, it is lifted to the next section lifting position through the lifting system of the lifting formwork, and the cycle is carried out in sequence, and the process operation is simple. At the same time, after the construction of the structure is completed, the lifting formwork can be changed to a bridge crane 20000 through simple modification, so as to lift the steel box girder, thereby reducing the project cost.

[0092] In addition, the hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 of the present application can be used in a hybrid beam cable-stayed bridge of a double-tower double-cable plane semi-floating system, which uses an H-type mother-and-child tower, and both the mother-and-child towers include two steel towers, and the two steel towers are divided into 30 tower column segments, and the tower columns all adopt rounded rectangular sections, and the tower columns are divided into upper tower columns and lower tower columns, and the lower tower columns are steel-concrete composite structures involving variable cross-sections, so that the size of the lower tower column changes from large to small from bottom to top, and the upper tower column is a steel structure designed with equal cross-sections. Specifically, the lower tower column is T1~T15 segments, and the T3 segment is the longest, followed by the upper tower column. The T16~T30 segment, and the T29 segment is the longest, then the structure lifted by the hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 in the above text is the steel tower segment in this embodiment.

[0093] In addition, three steel cross beams, namely, upper, middle and lower, are arranged between the two steel towers, and the lengths of the three steel cross beams are increased in sequence.

[0094] With respect to the above-mentioned steel tower structure, the present application also relates to a method for installing a steel tower using the above-mentioned hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000, which includes the following sub-methods for the inclined tower section, the straight tower section, the variable-section tower section and the steel cross beam of the steel tower:

[0095] The installation method of the inclined tower section specifically comprises the following steps:

[0096] First, the hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 (hereinafter referred to as the self-elevating lifting formwork) is installed on the top of the installed steel tower segment that meets the height requirement.

[0097] When installing the self-elevating lifting formwork, the following steps are specifically included: the anchor seat 11 of the self-elevating lifting formwork is manufactured together with the steel tower segment, and the vertical spacing between two adjacent anchor seats 11 is adapted to the length of a single track 12. Then, four tracks 12 are installed on the surface of the steel tower segment and connected to the anchor seat 11. Then, the climbing frame guide seat 133, the cylinder seat 132 and the climbing frame top-lifting seat 131 are installed in sequence on the installed track 12 and locked with a pin shaft. When installing the climbing frame guide seat 133, the cylinder seat 132 and the climbing frame top-lifting seat 131, it is necessary to pay attention to the normal counter-hook cooperation and guiding effect between each support and the track 12. In addition, the climbing frame guide seat 133, the cylinder seat 132 and the climbing frame top-lifting seat 131 can also be installed on the track 12 first, and then attached to the anchor seat 11 as a whole with the track 12. Then, the climbing frames 21 on both sides of the steel tower segment and the horizontal constant reaction force system between the climbing frames 21 on both sides are installed in sequence, and then the lifting trusses 22 are installed on the top of the climbing frames 21 on both sides. At the same time, a swing support 241 and a sliding swing support 242 need to be set between the climbing frames 21 and the lifting trusses 22. Then, the lifting trolley 23 is installed on the lifting truss 22. First, the lower sliding beam 231 and the related traveling mechanism of the lifting trolley 23 are installed, and then the upper sliding beam 232 and the related traveling mechanism are installed. Finally, the hydraulic lifting system 3 is installed on the upper sliding beam 232.

[0098] After the self-elevating lifting formwork is installed, it is debugged, tested and accepted. Only when the self-elevating lifting formwork is ready for operation adjustment can the hoisting and self-climbing operations of the steel tower segment be started.

[0099] Next, the self-elevating lifting formwork is used to hoist a single-section connecting steel tower segment from one side of the steel tower to the top of the installed steel tower segment for installation. The self-elevating lifting formwork can fine-tune the positioning of the connecting steel tower segment so that the connecting steel tower segment can be lowered to the construction position corresponding to the top of the installed steel tower segment for construction.

[0100] After the subsequent steel tower segment is installed in place, the self-elevating lifting formwork can use its self-climbing system 1 to climb to the next workstation (i.e. the newly installed subsequent steel tower segment) to hoist the next subsequent steel tower segment and install it with the installed steel tower segment.

[0101] Among them, since the transverse curvature of the inclined tower section of the tower column varies greatly and the center line in the longitudinal direction is consistent, the lifting position of the self-elevating lifting formwork is located on the inclined side of the inclined tower section. Correspondingly, the track 12 of the self-elevating lifting formwork is arranged on the opposite side surfaces of the inclined tower section along the inclined direction, that is, the lifting truss 22 serving as the cantilever of the self-elevating lifting formwork extends along the longitudinal direction to outside the range of the tower column to facilitate the lifting operation.

[0102] When hoisting the steel tower segment, the hoisting trolley 23 of the self-elevating lifting formwork moves to the outside of the lifting truss 22 outside the tower column range, and uses the two 350t jack mechanisms of its hydraulic lifting system 3 to lift the connected steel tower segment from the bottom of the tower to the lifting truss 22, and the hoisting trolley 23 drives the hydraulic lifting system 3 and the connected steel tower segment to move from the inclined surface of the lifting truss 22 to the inside of the lifting truss 22, and lowers the connected steel tower segment to the installation position at the top of the installed steel tower segment.

[0103] Since the size of the tower columns of the inclined tower section decreases from bottom to top, the distance between the two climbing frames 21 of the self-elevating lifting formwork on the same steel tower segment also decreases with the increase of the height of the steel tower. The swing support 241 and the sliding swing support 242 between the climbing frame 21 and the lifting truss 22 can effectively keep the lifting truss 22 in a horizontal state at all times.

[0104] In addition, it should be noted that the climbing process of the self-elevating climbing formwork in the inclined tower section, the straight tower section and the variable-section tower section is the same, that is, when the climbing component climbs along the track 12, the cylinder seat 132 is first connected to the track 12, the climbing frame lifting seat 131 is disconnected from the track 12, and the piston rod of the lifting cylinder 41 extends a stroke, driving the lifting system 2 to move a stroke distance along the track 12; then the climbing frame lifting seat 131 is connected to the track 12, the cylinder seat 132 is disconnected from the track 12, the piston rod of the lifting cylinder 41 retracts, and the cylinder seat 132 moves a stroke relative to the track 12; then the cylinder seat 132 is connected to the track 12, the climbing frame lifting seat 131 is disconnected from the track 12, the above steps are repeated and the climbing component and the lifting system 2 climb to the subsequent completed steel tower segment. At the same time, the self-climbing system 1 of the present application adopts a single row of four tracks 12 for alternate use. When the tracks 12 are used in reverse, it is only necessary to transfer the bottom track 12 to the top of the top track 12 and anchor it through the anchor seat 11.

[0105] The installation method of the vertical tower section includes the following steps:

[0106] A self-elevating lifting formwork is installed on the top of the installed steel tower segment that meets the height requirement. It is known that the straight tower segment is the upper tower column of the steel tower, and the lifting of the steel tower segment of the straight tower segment can continue to use the self-elevating lifting formwork of the inclined tower segment.

[0107] The self-elevating lifting formwork is used to hoist a single-section connected steel tower segment from one side of the steel tower to the top of the installed steel tower segment for installation.

[0108] After the subsequent steel tower segment is installed in place, the self-elevating lifting formwork can use its self-climbing system 1 to climb to the next workstation (i.e. the newly installed subsequent steel tower segment) to hoist the next subsequent steel tower segment and install it with the installed steel tower segment.

[0109] It should be understood that the hoisting process of the steel tower segment of the straight tower section is the same as the hoisting process of the steel tower segment of the inclined tower section, but the hoisting position of the self-elevating lifting formwork can be located on either side of the transverse bridge direction or the longitudinal bridge direction.

[0110] There is a curvature change at the connection position between the inclined tower section and the straight tower section (i.e., there is a curvature change point at the joint J15 between the T14 segment and the T15 segment), and the surface of the steel tower changes from an inclined state to a vertical state. Therefore, the installation method of the variable cross-section tower section includes the following steps:

[0111] First, a self-elevating lifting formwork is installed on the top of the installed steel tower segment that meets the height requirements. It is known that the curvature change point is located between the inclined tower section and the straight tower section, so the self-elevating lifting formwork installed there can use the self-elevating lifting formwork of the inclined tower section.

[0112] The self-elevating lifting formwork is used to hoist a continued steel tower segment from one side of the steel tower to the top of the installed steel tower segment for installation. The continued steel tower segment serves as the climbing basis of the current round of the self-elevating lifting formwork, and the deflection angle of the self-elevating lifting formwork attached to the continued steel tower segment is adjusted according to the preset curvature / angle change value of the variable-section tower segment.

[0113] After the continued steel tower segment is installed in place, the deflection angle of the track 12 of the self-elevating lifting formwork for the subsequent climbing round is adjusted again;

[0114] The self-elevating lifting formwork climbs to the next workstation to install the next connected steel tower segment until the installation process of the variable-section tower segment is completed.

[0115] Preferably, the deflection angle of the track 12 of the self-elevating lifting formwork each time ranges from 0.2° to 0.3°. Specifically, the deflection angle of the track 12 can be adjusted by adjusting the height between the anchor seat 11 and the surface of the steel tower segment.

[0116] In order to ensure the normal climbing of the lifting system 2, a reasonable gap is set between the climbing assembly (i.e., the climbing frame lifting seat 131, the cylinder seat 132 and the climbing frame guide seat 133) and the track 12 to adapt to the gap effect caused by the curvature change. Preferably, the gap between the climbing assembly and the track 12 is no more than 5 mm, so as to ensure that the climbing assembly and the track 12 can adapt to the influence of the curvature change, and also prevent the instability of the climbing assembly during the climbing process due to excessive gap. At the same time, the aperture of the plug-in pin hole 124 of the track 12 is larger than the pin shaft of the plug-in pin mechanism of the climbing frame lifting seat 131 and the cylinder seat 132, and the specific range is 0.5mm~1mm, so as to ensure that there is enough gap to adapt to the curvature change during the climbing process.

[0117] In this embodiment, the angle change of the steel tower surface is 0.8°, and the track 12 can start setting the turning angle at the T13 segment, with each turning angle of 0.2°. Then, after climbing one section of the track 12, the next turning angle is made. After a total of four turning angles, the curvature change point can be successfully passed.

[0118] During the construction of the steel tower, the construction of the steel beams can also be carried out. The upper, middle and lower steel beams in this embodiment are respectively located at the T29 segment, the T15 segment and the T5 segment. The installation method of the steel beams includes the following steps:

[0119] While ensuring that the two adjacent steel towers along the transverse direction meet the height requirements, self-elevating lifting formwork is installed on the top of the installed steel tower segments. Since the construction of the steel beam is carried out simultaneously with the construction of the steel tower, the construction of the steel beam can use the same set of self-elevating lifting formwork as the steel tower lifting installation.

[0120] After the two adjacent steel towers have been constructed to the T6 section, the self-elevating lifting formwork is used to hoist the lower crossbeam to the installation position of the lower crossbeam of the steel tower and install it.

[0121] Then, a temporary support platform higher than the top surface of the lower beam is built at the bottom of the tower at the lower beam, and the middle beam is assembled on the temporary support platform, and then the upper beam is assembled on the top surface of the middle beam. At the same time, the steel tower can be constructed synchronously, and the construction is stopped at the temporary installation position of the upper beam when the steel tower is constructed. The temporary installation position is located above the installation position of the middle beam. In this embodiment, the temporary installation position is located at the T19 segment, and the installation position of the middle beam is located at the T15 segment. In addition, the middle beam and the upper beam are assembled on the temporary support platform, so that the lower beam is not subjected to force during the assembly process of the middle beam and the upper beam, ensuring the stability of the steel tower structure.

[0122] When the steel tower is constructed to the T22 section, the construction of the steel tower is stopped, and the self-elevating lifting formwork is used to lift the upper beam to the temporary installation position for pre-fixation, and then the self-elevating lifting formwork is used to lift the middle beam to the middle beam installation position and install it, and then the construction of the steel tower is continued to the tower top position, and finally the constraint between the upper beam and the steel tower is released, and the self-elevating lifting formwork is used to lift the upper beam to the upper beam installation position of the steel tower and install it.

[0123] When the self-elevating lifting formwork is used to hoist the crossbeam, the self-elevating lifting formwork of the two adjacent steel towers needs to be used. The specific operation process is as follows: first, the constraints of the lifting trolley 23 and the lifting truss 22 are released, and the climbing frame 21 and the lifting truss 22 are moved down to separate the lifting truss 22 from the lifting trolley 23, so that the lifting trolley 23 is located and anchored on the top of the completed steel tower segment, and the hydraulic lifting system 3 is moved horizontally to the inner side of the main longitudinal beam close to the lifting truss 22, and then the steel crossbeam is lifted by the hydraulic lifting system 3 on the top of the two adjacent steel towers. After the steel crossbeam is lifted into place, the anchoring of the lifting trolley and the top of the completed steel tower segment is released, and the climbing frame 21 and the lifting truss 22 are moved up under the action of the climbing assembly and the self-elevating lifting formwork is restored.

[0124] At the same time, since the anti-fall lock tongue 1312 and the anti-fall shear block 125 arranged between the climbing frame lifting seat 131 and the track 12 are engaged to limit the downward movement of the climbing assembly, before the climbing frame 21 and the lifting truss 22 are moved downward, the anti-fall lock tongue 1312 is removed from the climbing frame lifting seat 131 to ensure the smooth downward movement of the climbing frame 21 and the lifting truss 22.

[0125] In addition, the downward movement distance of the climbing frame 21 and the lifting truss 22 is a multiple of the distance between two adjacent plug-in and pull-out pin holes 124 of the track 12. Preferably, the downward movement distance in this embodiment is 800 mm.

[0126] Furthermore, when hoisting the upper crossbeam and the middle crossbeam, the overall hoisting operation can be carried out by using the distribution beam bottom hoisting method.

[0127] The pre-fixation of the upper crossbeam at the temporary installation position of the steel tower can be achieved by welding or corbel bolting. Preferably, in this embodiment, the upper crossbeam is pre-fixed by corbel bolting. Since the length of the upper crossbeam is less than the length of the middle crossbeam, a temporary corbel can be set on the surface of the steel tower in advance during the construction of the steel tower. After the upper crossbeam is passed through the temporary corbel, the length of the temporary corbel is extended, and the upper crossbeam is lowered onto the temporary corbel and fixed by bolts. When lifting the upper crossbeam later, it is only necessary to release the locking and fixing of the bolts, which is simple to operate, improves the use efficiency, and the temporary corbel can be used cyclically.

[0128] Obviously, the present application adopts the self-elevating lifting formwork to hoist the steel beams, changing the scattered assembly of the steel beams at high altitude to scattered assembly on the ground and at low altitude. The assembly of the steel beams can be carried out simultaneously with the hoisting of the steel tower segments, saving construction time and reducing safety risks.

[0129] After the upper cross beam is hoisted, the hydraulic self-elevating integrated cable-stayed bridge lifting formwork 10000 can be dismantled by other cranes. First, the hydraulic lifting system 3 and the upper sliding beam 232 of the lifting trolley 23 are dismantled in the air, and then the lower sliding beam 231 of the lifting trolley 23 is dismantled, and then the lifting truss 22 and the climbing frame 21 are dismantled, and then the climbing assembly and the track 12 are dismantled, and finally the anchor seat 11 on the surface of the steel tower is completely dismantled at one time.

[0130] The various mechanisms of the dismantled lifting formwork can be simply modified to form a bridge crane 20000 for lifting and erecting steel box girders. The bridge crane 20000 is the bridge crane 20000 modified from the hydraulic self-lifting integrated cable-stayed bridge lifting formwork 10000 of the present application as mentioned above, thereby reducing the cost of cable-stayed bridge construction measures.

[0131] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A hydraulic self-elevating integrated cable-stayed bridge lifting formwork, characterized in that: It includes self-climbing system, lifting system and hydraulic lifting system; among which, The self-climbing system comprises an anchoring seat pre-buried in the surface of the structure, a track attached to the anchoring seat, and a climbing assembly hooked on the track, the climbing assembly is provided with a hook portion that is gap-matched with the track, the climbing assembly and the track are fixed by pin connection, the anchoring seat is pre-buried in the surface of the structure at a preset vertical spacing, the two ends of the track are respectively attached to the anchoring seat, and two adjacent tracks are connected end to end and attached to the same anchoring seat; The lifting system is connected with the climbing component, and the lifting system climbs along the track through the climbing component. The hydraulic lifting system is arranged on the lifting system and can move longitudinally or transversely relative to the lifting system to be used for hoisting the connected structure to the top of the installation structure for installation. The climbing component includes a climbing frame jacking seat, a cylinder seat, a climbing frame guide seat and a jacking cylinder. The jacking cylinder is connected between the climbing frame jacking seat and the cylinder seat. The climbing frame jacking seat and the climbing frame guide seat are both bolted and fixed to the lifting system. The climbing frame jacking seat and the cylinder seat are movably connected to the track. The lifting system includes a climbing frame, A lifting truss and a lifting trolley, wherein the climbing frame is bolted and fixed to the climbing frame lifting seat, the lifting truss is arranged on the top of the climbing frame, and the top main longitudinal beam of the lifting truss extends to the outside of the installation range of the structure along the transverse bridge direction or the longitudinal bridge direction, so that the vertical section of the lifting truss is arranged in an inverted trapezoidal shape, the lifting trolley is arranged on the top of the lifting truss and can move along the longitudinal direction of the lifting truss, and two climbing frames are arranged on opposite sides of the same structure, and each climbing frame is connected to two sets of self-climbing systems arranged side by side, and each set of the self-climbing system includes at least three tracks and at least one set of climbing components, and the tracks are alternately circulated; A swing bearing and a sliding swing bearing are provided between the top of the climbing frame and the lifting truss, the swing bearing is located at the middle pressure rod of the lifting truss, the swing bearing includes a climbing frame connecting part and a truss front end connecting part, the climbing frame connecting part is fixed to the climbing frame, the truss front end connecting part is fixed to the lifting truss, and the climbing frame connecting part is hinged to the truss front end connecting part; the sliding swing bearing includes a climbing frame connecting part and a truss tail end connecting part, the climbing frame connecting part is fixed to the climbing frame, the climbing frame connecting part is hinged to the truss tail end connecting part, and the bottom main longitudinal beam of the lifting truss is provided with a truss reverse hook track extending along its longitudinal direction at its tail end, the truss tail end connecting part cooperates with the truss reverse hook track and can move along the truss reverse hook track.

2. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 1 is characterized in that: The side of the track connected to the anchor seat is defined as the back side, and the two side sides of the track are provided with anti-hook grooves along the longitudinal direction thereof, the groove bottom of the anti-hook groove is parallel to the longitudinal direction, the first groove wall of the anti-hook groove close to the front side of the track is perpendicular to the groove bottom, and the second groove wall close to the back side of the track is obliquely intersected with the groove bottom so that the cross-sectional width of the groove bottom of the anti-hook groove is smaller than the cross-sectional width of the groove opening; The reverse hook portion of the climbing assembly comprises a slider whose cross-sectional shape is adapted to the cross-sectional shape of the reverse hook groove, and a connecting arm connecting the end of the slider and the climbing assembly body.

3. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 2 is characterized in that: A plug-in pin hole is provided between the anti-hook groove and the front side of the track perpendicular to the longitudinal direction of the track and passes through the two sides of the track. The climbing frame lifting seat, cylinder seat and climbing frame guide seat are all provided with plug-in pin holes that are compatible with the plug-in pin holes of the track.

4. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 3 is characterized in that: A single-pin hydraulic plug-in and pull-out mechanism is provided on at least one connecting arm of the climbing frame lifting seat, and correspondingly, a plug-in and pull-out pin hole is provided on one connecting arm of the climbing frame lifting seat; A dual-axis hydraulic plug-in pin mechanism is provided on at least one connecting arm of the oil cylinder seat, and correspondingly, two plug-in pin holes are provided on one connecting arm of the oil cylinder seat, and the spacing between the two plug-in pin holes of the same connecting arm on the oil cylinder seat is adapted to the spacing between the plug-in pin holes of the rail; A plug-in pin hole is provided on a connecting arm of the climbing frame guide seat.

5. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 2 is characterized in that: An anti-falling shear block is arranged on the front side of the track, and an anti-falling locking tongue which can be engaged with the anti-falling shear block is arranged on the top of the climbing frame jacking seat.

6. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 1 is characterized in that: A horizontal constant reaction force mechanism is provided between the two climbing frames, and the horizontal constant reaction force mechanism includes a steel wire rope connected to the two climbing frames, and the end of the steel wire rope close to the middle pressure rod of the lifting truss is a fixed end, and the end of the steel wire rope close to the main pull rod at the tail of the lifting truss is a tensioning end.

7. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 6 is characterized in that: The lifting truss is provided with two rows of first anti-hook rails extending along its longitudinal direction, both sides of the lifting trolley are attached to the first anti-hook rails, and the lifting truss is also provided with a first traveling jack for pulling the lifting trolley to move along the first anti-hook rails.

8. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 7 is characterized in that: The overhead crane comprises a lower sliding beam and an upper sliding beam; Among them, the lower sliding beam is attached to the first anti-hook track, and the lower sliding beam is provided with a second anti-hook track extending along the transverse direction of the lifting truss. The upper sliding beam is attached to the second anti-hook track, and under the traction of the second walking jack provided on the lower sliding beam, the upper sliding beam drives the hydraulic lifting system to move transversely along the lifting truss.

9. The hydraulic self-elevating integrated cable-stayed bridge lifting formwork according to claim 1, characterized in that: The climbing frame and the lifting truss are both formed by bolting different rods.

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