Overall installation method of high-pier descending type bridge building machine

Abstract

The invention relates to an integral installation method of a high-pier descending type bridge building machine, and belongs to the technical field of bridge construction. The mounting scheme comprises the following steps of: assembling a single-side bridge building machine main body frame along a longitudinal bridge direction and on two sides of a pier bottom according to a designed lifting point position; the bridge building machine main body frames on the two sides of the pier bottom are hoisted to the positioning height positions on the bridge deck through two winch sets, and the two winch sets are symmetrically distributed in the longitudinal bridge direction; at the positioning height position, the two bridge building machine main body frames are driven to horizontally move to the construction installation position in the longitudinal bridge direction; and at the construction installation position, the bridge building machine main body frame is lifted from the positioning height position to the designed elevation position through an alignment adjusting device, and the bridge building machine main body frame and the front C hook are fixed at the designed elevation position. During construction, the construction safety can be effectively ensured, and the construction efficiency can be effectively improved.

Description

Technical Field

[0001] This application relates to the technical field of bridge construction, and particularly to an overall installation method for a high pier down - type bridge building machine. Background Art

[0002] In the cantilever construction of continuous beam (rigid frame) bridges, as a key piece of equipment, the structural form and installation method of the bridge building machine have an important impact on construction efficiency, safety, and project quality. With the continuous increase in bridge span and the extension of construction segment length, which has now reached 6 - 8m, the design and use of bridge building machines face more challenges.

[0003] For a through - type bridge building machine, its main truss is located below the flange plate. The traditional installation method of the bridge building machine relies on the cooperation of tower cranes and cranes. When the tower crane or crane is hoisting, due to the low position of the main truss of the through - type bridge building machine, it is often difficult to directly reach some areas, resulting in a hoisting blind - spot problem during the installation of the through - type bridge building machine, making the hoisting operation unable to proceed smoothly.

[0004] In addition, under the high - tower working condition, the lifting capacity of the tower crane is limited. Especially when installing large - segment bridges, the weight and size of the bridge building machine often exceed the rated lifting range of the tower crane. This not only increases the installation difficulty but also may lead to inaccurate installation of the bridge building machine, affecting the quality and safety of subsequent construction. Summary of the Invention

[0005] The embodiments of this application provide an overall installation method for a high pier down - type bridge building machine to solve the problems in the related technology that rely on the cooperation of tower cranes and cranes to install the bridge building machine. The position of the main truss of the through - type bridge building machine is low, and the lifting capacity of the tower crane is limited under the high - tower working condition, resulting in difficult installation construction, low efficiency, and high installation risk of the through - type bridge building machine.

[0006] The embodiments of this application provide an overall installation method for a high pier down - type bridge building machine, including the following steps: Assemble the unilateral bridge building machine main frame along the longitudinal bridge direction and at both sides of the pier bottom according to the designed lifting point positions; Use two sets of winch units on the bridge deck to hoist the bridge building machine main frames on both sides of the pier bottom to the positioning height position respectively, and the two sets of winch units are symmetrically distributed along the longitudinal bridge direction; At the positioning height position, drive the two bridge building machine main frames to move horizontally along the longitudinal bridge direction to the construction and installation position; At the construction and installation position, use the alignment and adjustment device to lift the bridge building machine main frame from the positioning height position to the designed elevation position, and fix the bridge building machine main frame with the front C - hook at this designed elevation position.

[0007] In some embodiments, assembling a single-sided bridge-building machine main frame specifically includes the following steps: arranging limiting slots in a rectangular shape on both sides of the pier bottom; using the limiting slots to support the assembly of the main truss frame system; using the winch assembly to lift the main truss frame system to the lifting position, and connecting the bottom basket system with the main truss frame system through a hanger at the lifting position to achieve the overall assembly of the single-sided bridge-building machine main frame.

[0008] In some embodiments, before using the winch unit to lift the main truss frame system to the lifting position, the installation method also includes the following steps: using the winch unit to lift the main truss frame system so that the main truss frame system is separated from the limit slot fulcrum; after the main truss frame system is separated from the limit slot fulcrum, the main truss frame system is swung as a whole close to the pier body to a first horizontal position.

[0009] In some embodiments, after the bottom basket system is connected to the main truss frame system by a hoist at the lifting position, the installation method further includes: using the winch assembly to lift the main frame of the bridge-building machine to separate the bottom basket system from the bottom fulcrum; after the bottom basket system is separated from the bottom fulcrum, the main frame of the bridge-building machine is swung as a whole close to the pier body to a second horizontal position.

[0010] In some embodiments, after the main truss frame system is swung as a whole close to the pier body to a first horizontal position, the installation method further includes: after the main truss frame system is swung and stabilized, checking whether the operation of the winch unit is abnormal; if there is an abnormality, maintaining the winch unit, otherwise continue to use the winch unit to lift the main truss frame system to the lifting position.

[0011] In some embodiments, before hoisting the main frame of the bridge-building machine on both sides of the pier bottom to the positioning height position, the installation method also includes: installing at least two walking systems on the bridge deck along the longitudinal direction of the bridge, and keeping the walking systems parallel to each other; installing the front C hook on the walking system along the transverse direction of the bridge; installing a lifting support system on the front C hook along the longitudinal direction of the bridge, and arranging a moving device on one side of each winch group on the lifting support system; arranging the positioning adjustment device on the moving device, and connecting a pulley block to the moving device, so that one end of the wire rope on the winch group is connected to the main frame of the bridge-building machine through the pulley block.

[0012] In some embodiments, after the lifting support system is installed on the front C-hook along the longitudinal direction of the bridge, a rear anchor device is arranged at the center point of the lifting support system in the longitudinal direction of the bridge to anchor the lifting support system to the bridge deck.

[0013] In some embodiments, after the lifting support system is anchored to the bridge deck, the two groups of winch units are operated synchronously on both sides of the bridge deck or independently on one side.

[0014] In some embodiments, when the two sets of hoist units operate synchronously or independently on one side on both sides of the bridge deck, a reaction rope is connected between the hoist unit and the lifting support system; and the reaction rope is released after the operation of the hoist unit ends.

[0015] In some embodiments, the front C-hook is installed on the front of the traveling system along the transverse direction of the bridge: a support device is arranged on the bridge deck, and the front C-hook is supported on the support device.

[0016] The beneficial effects brought by the technical solution provided by this application include:

[0017] The embodiment of this application provides an overall installation method for a high-pier down-type bridge building machine. The main frame of the bridge building machine on one side is assembled on the ground at the pier bottom, and two sets of hoist units are used to lift the main frames of the bridge building machine on both sides in the longitudinal direction of the bridge respectively. The two sets of hoist units can disperse the load, reduce the safety risk caused by the weight limit in high-altitude hoisting, and the separate operation and lifting by different hoist units can also improve the construction efficiency. When lifting, first lift to the positioning height by the hoist unit, and then lift to the designed elevation by the alignment adjustment device, so that the alignment and fixation of the bridge building machine are convenient, further improving the construction safety and construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is the overall structure schematic diagram provided by the embodiment of this application;

[0020] Figure 2 It is the schematic diagram provided by the embodiment of this application for showing the assembly of the main frame of the bridge building machine;

[0021] Figure 3 It is the schematic diagram provided by the embodiment of this application for showing the limit card slot;

[0022] Figure 4 It is the schematic diagram provided by the embodiment of this application for showing the lifting support system;

[0023] Figure 5 It is the schematic diagram provided by the embodiment of this application for showing the moving device;

[0024] Figure 6 It is the schematic diagram provided by the embodiment of this application for showing the alignment adjustment device;

[0025] Figure 7 Schematic diagram provided for an embodiment of the present application to show a conversion joint and a lifting lug;

[0026] Reference numerals:

[0027] 1. Main frame of bridge-building machine; 10. Main truss frame system; 11. Bottom basket system; 12. Suspender; 13. Guy wire; 2. Hoisting unit group; 20. Pulley block; 3. Front C-hook; 4. Limit card slot; 40. Raft foundation; 41. Support rod; 5. Traveling system; 50. Rail; 51. Jacking seat; 52. Hydraulic telescopic rod; 6. Lifting support system; 60. Double-layer Bailey truss; 61. Section steel diagonal brace; 62. Section steel connection system; 63. Jacking-through jack; 64. Distribution beam frame; 640. Rebar; 641. Conversion joint; 642. Lifting lug; 7. Rear anchor device; 8. Reaction rope; 9. Support device; 90. Shimming Detailed implementation manners

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0029] The embodiment of the present application provides an overall installation method for a high-pier down-traveling bridge-building machine, which can solve the problems that the installation of the bridge-building machine depends on the cooperation of a tower crane and a crane, the position of the main truss of the lower-deck bridge-building machine is relatively low, and the lifting capacity of the tower crane is limited under the high-tower working condition, resulting in difficult installation construction, low efficiency and high installation risk of the lower-deck bridge-building machine.

[0030] See Figures 1 to 7 As shown, the embodiment of the present application provides an overall installation method for a high-pier down-traveling bridge-building machine, including the following steps: First, assemble the unilateral main frame 1 of the bridge-building machine along the longitudinal bridge direction and on both sides of the pier bottom according to the designed lifting point positions; then use two groups of hoisting unit groups 2 on the bridge deck to hoist the main frames 1 of the bridge-building machine on both sides of the pier bottom to the positioning height position respectively, and the positioning height position is set as the maximum lifting limit position of the hoisting unit groups 2, and the two groups of hoisting unit groups 2 are symmetrically distributed with respect to the longitudinal bridge direction; then at the positioning height position, drive the two main frames 1 of the bridge-building machine to move horizontally along the longitudinal bridge direction to the construction and installation position, and the construction and installation position is on both sides of the fixed front C-hook 3; at the construction and installation position, use the alignment adjustment device to lift the main frame 1 of the bridge-building machine from the positioning height position to the designed elevation position, and the designed elevation position is the position where it is fixedly docked with the front C-hook 3, and fix the main frame 1 of the bridge-building machine with the front C-hook 3 at this designed elevation position.

[0031] During the construction of this application, first, the main frame 1 of the bridge-building machine is pre-installed on both sides of the pier bottom. Then, the main frame 1 of the bridge-building machine is directly lifted from the pier bottom by the hoist unit 2. The hoist unit 2 can be flexibly arranged on the bridge deck to select a suitable angle and position for hoisting. Moreover, two groups of hoist units 2 are used to hoist the main frames 1 of the bridge-building machine on both sides of the pier bottom respectively, realizing the dispersion of the lifting weight. This can effectively reduce the stress on a single lifting point and avoid the instability or safety problems caused by excessive lifting weight. In addition, at the construction and installation position, the main frame 1 of the bridge-building machine is lifted from the positioning height position to the design elevation position by the alignment adjustment device and fixed to the front C-hook 3. This process not only achieves accurate alignment and installation but also ensures the stability and safety of the bridge-building machine.

[0032] In the traditional method of installing the main frame 1 of the bridge-building machine by tower crane, if the main frames 1 on both sides of the bridge pier are hoisted in sequence, the construction progress is relatively slow; if the main frames 1 on both sides are hoisted simultaneously, it will exceed the rated lifting weight range of the tower crane; or if two tower cranes are arranged, the cost is relatively high, and for bridge piers with relatively high heights, the risk coefficient of the tower crane working at high altitudes is high and the difficulty of high-altitude operations is great. In summary, by using the hoist unit 2 for hoisting in this application, the installation time is greatly shortened, the installation efficiency is improved, and the defect of limited lifting capacity under high tower working conditions is improved. The cooperation between the hoist unit 2 and the alignment adjustment device can accurately align and install, ensuring the stability and accuracy of the main frame 1 of the bridge-building machine, providing a strong guarantee for the quality and safety of subsequent construction.

[0033] In this application, before hoisting the main frames 1 of the bridge-building machine on both sides of the pier bottom to the positioning height position, the installation method further includes: installing at least two traveling systems 5 on the bridge deck along the longitudinal bridge direction and keeping the traveling systems 5 parallel to each other; the traveling system 5 includes a track 50, a jacking seat 51 arranged on the track 50, and a hydraulic telescopic rod 52. The specific steps during the layout are as follows: first, lay out the track 50 on the bridge deck, check the position of the anchor bolts, and then lay the tracks 50 along both sides of the bridge deck and symmetrically about the transverse bridge center, keeping the installation of the track 50 straight and parallel. Then, connect the jacking seat 51 and the hydraulic telescopic rod 52 on the track 50, and align the rod body part of the hydraulic telescopic rod 52 with the installation interface of the jacking seat 51.

[0034] Then, install the front C-hook 3 on the traveling system 5 along the transverse bridge direction. Specifically, place the front C-hook 3 on the jacking seat 51. During the construction stage, the traveling system 5 can drive the front C-hook 3 to move on the bridge deck, and the movement of the front C-hook 3 can drive the installed and fixed main frame 1 of the bridge-building machine to be used in high-altitude construction operations. It should be noted that during the installation process of the main frame 1 of the bridge-building machine, the front C-hook 3 is located on the traveling system 5 and is temporarily anchored to the bridge deck by, including but not limited to, anchor bolts. The traveling system 5 does not operate, and the anchoring is released until the main frame 1 of the bridge-building machine is officially put into construction use.

[0035] Further, the front C-hook 3 is installed on the front of the traveling system 5 along the transverse bridge direction. First, a support device 9 is arranged at the bottom fulcrum of the front C-hook 3 on the bridge deck. The support device 9 is set as a support oil cylinder, and the front C-hook 3 is supported on the support oil cylinder. The support device 9 can provide a stable support point for the front C-hook 3 to ensure the safety of the front C-hook 3 at a high altitude on the bridge deck. After the front C-hook 3 is fixed, a lifting support system 6 is installed on the front C-hook 3 along the longitudinal bridge direction. Before installing the lifting support system 6, a 90 is padded under the bottom flange of the front C-hook 3. In this application, the lifting support system 6 is set to adopt a double-layer Bailey beam truss 60 with steel section diagonal braces 61 on both sides of the front C-hook 3. There are two groups of double-layer Bailey beam trusses 60 on each side, and a steel section connection system 62 is also connected between the double-layer Bailey beam trusses 60 on both sides to connect each group of Bailey beams and ensure the structural stability of the lifting support system 6 when the main frame 1 of the bridge building machine is lifted integrally.

[0036] After that, a moving device is arranged on one side of each group of winch units 2 on the lifting support system 6. Among them, the two groups of winch units 2 are symmetrically distributed about the longitudinal bridge direction on the lifting support system 6. Each group of winch units 2 includes two winches, and the two winches are respectively arranged on the double-layer Bailey beam trusses 60 on both sides. A moving device is provided on one side of each winch. The moving device includes a distribution beam frame 64 and a through jack 63. The through jack 63 is connected to the distribution beam frame 64 and is on the same axis as the winch. A pulley block 20 is connected to the distribution beam frame 64. Then, one end of the steel wire rope on the winch unit 2 is wound around the pulley block 20 and connected to the main frame 1 of the bridge building machine, and the connection method is that an eight-shaped rope is set at the bottom of the pulley block 20 and connected by a shackle. The eight-shaped rope is also connected to the lifting lug 642 on the main frame 1 of the bridge building machine by a shackle. Finally, the alignment adjustment device is arranged on the distribution beam. The alignment adjustment device includes a threaded steel 640 with one end rotatably connected to the distribution beam frame 64 and a conversion joint 641 rotatably connected to the other end of the threaded steel 640. One end of the threaded steel 640 is in threaded cooperation with the distribution beam frame 64, and the other end is rotatably connected to the conversion joint 641. The conversion joint 641 is also connected to the ear plate on the main frame 1 of the bridge building machine by a pin shaft, and the ear plate is pre-installed at the pier bottom.

[0037] Therefore, when installing the main frame 1 of the bridge building machine, first use the cooperation of the through jack 63 and the distribution beam frame 64 to adjust the lifting points on the winch in place. Then, use the winches to hoist the main frames 1 of the bridge building machine on both sides of the pier bottom to the positioning height position respectively. Next, at the positioning height position, use the cooperation of the through jack 63 and the distribution beam frame 64 to drive the two main frames 1 of the bridge building machine to move horizontally to the construction and installation position along the longitudinal bridge direction. Finally, at the construction and installation position, connect the main frame 1 of the bridge building machine with the threaded steel 640 and the adapter 641, and rotate the screw steel drive to lift the main frame 1 of the bridge building machine from the positioning height position to the design elevation position, and fix the main frame 1 of the bridge building machine with the front C-hook 3 at the design elevation position.

[0038] In this application, the specific steps for assembling the main frame 1 of the bridge building machine on one side are as follows: arrange the limit card slots 4 in a rectangle on both sides of the pier bottom. The arrangement form of the limit card slots 4 can be installed according to the on-site construction conditions. The specific forms include but are not limited to using the pier bottom cap 40 to directly build the limit card slots 4 on the cap 40 with concrete; or installing the support rod 41 on the construction platform on one side of the cap 40, with a support block arranged at the top of the support rod 41, and the limit card slot 4 is formed on the support block. If the limit card slots 4 are arranged on both the support rod 41 and the cap 40, it is necessary to ensure that the bottom horizontal heights of the limit card slots 4 on the cap 40 and the limit card slots 4 on the support rod 41 are the same. By arranging the limit card slots 4 in a rectangle, a stable support frame can be formed, providing a solid foundation for the subsequent assembly work.

[0039] After that, the assembly of the main truss frame system 10 is completed by using the limit card slot 4 for support. During construction operations, the main truss frame system 10 can be specifically lifted to the limit card slot 4 by a hoisting device on the ground in a hoisting manner. The traction guy ropes 13 on both sides of the main truss frame system 10 are temporarily anchored to prevent the main truss frame system 10 from shifting or tilting during assembly, thereby ensuring the assembly accuracy and quality. With the support of the limit card slot 4, components such as a lifting beam sling and a temporary diagonal brace can be installed on the main truss frame system 10 to ensure the stability and accuracy of the main truss frame system 10 during the assembly process. Effectively, in other embodiments, the main truss frame system 10 can also be divided into multiple components, and the multiple components are assembled at the limit card slot 4. Finally, at the limit card slot 4, the winch unit 2 is used to lift the main truss frame system 10 to the lifting position, and the lifting position range is at a height of 6 - 7 m from the ground. At this lifting position, the bottom basket system 11 is connected to the main truss frame system 10 through the suspension rod 12. The bottom basket system 11 is an important part of the bridge building machine, and it is used to support construction personnel and construction equipment and serves as a construction platform. Connecting the bottom basket system 11 to the main truss frame system 10 can achieve the overall assembly of the main body frame 1 of the single-sided bridge building machine. The main truss frame system 10 and the bottom basket system 11 can be assembled separately and then combined, reducing the overall hoisting difficulty, and the bottom basket system 11 is installed on the ground or at low altitude, which is safer than traditional high-altitude assembly. Therefore, by completing the assembly of the main body frame 1 of the bridge building machine at the pier bottom in the embodiment of the present application, compared with traditional high-altitude assembly, ground assembly is safer, more efficient, and convenient for workers to operate and quality inspection.

[0040] In this application, before using the hoisting unit 2 to lift the main truss frame system 10 to the lifting position, the installation method further includes the following steps: Use the hoisting unit 2 to lift the main truss frame system 10, and the lifting height range of the main truss frame system 10 is 0.2 m to 0.5 m, so that the main truss frame system 10 is disengaged from the fulcrum of the limit card slot 4 to avoid jamming or collision during subsequent hoisting. After disengaging the main truss frame system 10 from the fulcrum of the limit card slot 4, the main truss frame system 10 is then swung as a whole close to the pier to the first horizontal position. At the first horizontal position, after the main truss frame system 10 is swung stably, check whether the operation of the hoisting unit 2 is abnormal; if there is an abnormality, maintain the hoisting unit 2, otherwise continue to use the hoisting unit 2 to lift the main truss frame system 10 to the lifting position. When the main truss frame system 10 is swung as a whole close to the pier, it is necessary to connect the guy ropes 13 for assistance. The small lift and swing enable the horizontal displacement range during swinging to be 1.4 m to 1.6 m at the first horizontal position, which can achieve the preliminary positioning of the main truss frame system 10 in space, ensure that the main truss frame system 10 is in the best starting position before formal hoisting, and reduce the difficulty of high-altitude adjustment. And using the hoisting unit 2 for lifting and swinging operations creates a better path for subsequent vertical lifting, which can significantly improve the construction efficiency compared with the traditional manual or mechanical handling methods. In addition, through a small-scale trial hoisting, the running speed of the hoisting unit 2 is adjusted to the same frequency to test the performance of the lifting support system 6. At the same time, the lifting deviation values of the left and right suspension points per unit length are summarized. At the same time, monitoring points are provided on both sides of the top of the main truss frame system 10. During the lifting process, the surveyors conduct balance monitoring throughout the process. There are observers and winch operators on both sides of the lifting support system. During lifting, a unified commander is arranged, and deviations are corrected in a timely manner when found, which can detect potential problems in the hoisting system in advance and avoid accidents during direct high-altitude hoisting.

[0041] In this application, after connecting the bottom basket system 11 and the main truss frame system 10 through the suspension rod 12 at the lifting position, the installation method further includes: Use the hoisting unit 2 to lift the main frame of the bridge building machine 1 to disengage the bottom basket system 11 from the bottom fulcrum; then after the bottom basket system 11 is disengaged from the bottom fulcrum, the main frame of the bridge building machine 1 is swung as a whole close to the pier to the second horizontal position, and the horizontal displacement range during swinging is 1.3 m to 1.5 m. The guy ropes 13 also need to be connected during the swinging process. Lift the basket system away from the bottom fulcrum, and check the connection quality between the bottom basket system 11 and the suspension rod 12 of the main truss through a small lift to avoid unhooking or deformation during formal hoisting. Swinging to the second horizontal position can further ensure the precise positioning of the main truss frame system 10 before formal hoisting and compensate for the hoisting path deviation caused by the terrain.

[0042] Therefore, during the installation process of the main frame 1 of the bridge building machine, the moving device can drive the distribution beam group to move, so as to change the position of the hanging point. Ensure that during the installation process of the main frame 1 of the bridge building machine, the lifting point can be flexibly adjusted, and the construction efficiency of high-altitude operation is high and the safety is high. When the hoist unit 2 lifts the main frame 1 of the bridge building machine to the positioning height position, because the alignment adjustment device is arranged on each distribution beam group, the moving device can drive the distribution beam group to move to the construction and installation position, and then at the construction and installation position, the alignment adjustment device can be controlled to directly further lift the main frame 1 of the bridge building machine to the designed elevation position.

[0043] In this application, after the lifting support system 6 is installed on the front C-hook 3 along the longitudinal bridge direction, the rear anchor device 7 is arranged at the center point of the lifting support system 6 along the longitudinal bridge direction to anchor the lifting support system 6 to the bridge deck. The rear anchor device 7 is set to include but not limited to a plurality of anchor rods with one end connected to the top of the lifting support system 6 and the other end anchored to the bridge deck. Anchoring the lifting support system 6 to the bridge deck makes the structures such as the lifting support system 6 and the hoist unit 2, the alignment adjustment device and the moving device installed on the lifting support system 6 more stable.

[0044] After the lifting support system 6 is anchored to the bridge deck, the two hoist units 2 can operate synchronously or independently on one side on both sides of the bridge deck. The operation mode of the two hoist units 2 can be selected according to the on-site construction. If the two hoist units 2 operate synchronously on both sides of the bridge deck, the lifting efficiency of the main frame 1 of the bridge building machine is fast, the load is evenly distributed, and the lifting is stable; if the two hoist units 2 operate separately and independently on both sides of the bridge deck, this method can also speed up the construction progress compared with the traditional installation method using the cooperation of tower cranes and cranes. Under the action of the rear anchor device 7, the structure of the lifting support system 6 is ensured to be reliable, and the situation of the lifting support system 6 tipping over is avoided. The selection of the above various construction schemes effectively provides convenience for the construction.

[0045] In this application, when the two hoist units 2 operate synchronously or independently on one side on both sides of the bridge deck, a reaction rope 8 is also connected between the hoist unit 2 and the lifting support system 6. The reaction rope 8 can balance the horizontal traction force of the hoist unit 2 during lifting; when the operation of the hoist unit 2 ends, the reaction rope 8 is released to ensure convenient replacement of the hanging point without being affected by the reaction rope 8.

[0046] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0047] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0048] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for integrally installing a high pier down-type bridge-building machine, characterized in that: The installation scheme includes the following steps: Assembling a single-side bridge-building machine main frame (1) along the longitudinal direction of the bridge and located on both sides of the pier bottom according to the designed lifting point positions; On the bridge deck, two groups of hoisting machine sets (2) are used to hoist the main frames (1) of the bridge-building machine on both sides of the pier bottom to the positioning height positions respectively, and the two groups of hoisting machine sets (2) are symmetrically distributed with respect to the longitudinal direction of the bridge; At the positioning height position, driving two bridge-building machine main frames (1) to move horizontally along the longitudinal direction of the bridge to a construction and installation position; At the construction and installation position, the main frame (1) of the bridge-building machine is lifted from the positioning height position to the design elevation position using a positioning adjustment device, and the main frame (1) of the bridge-building machine is fixed to the front C hook (3) at the design elevation position.

2. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 1, characterized in that: The assembly of the main frame (1) of the bridge-building machine on one side specifically comprises the following steps: Rectangular limit slots (4) are arranged on both sides of the pier bottom; The main truss frame system (10) is assembled by using the limit slot (4) to support the assembly; The main truss frame system (10) is lifted to a lifting position using the hoisting unit (2), and the bottom basket system (11) is connected to the main truss frame system (10) via a suspension rod (12) at the lifting position, so as to realize the overall assembly of the main frame (1) of the bridge-building machine on one side.

3. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 2, characterized in that: Before using the hoisting unit (2) to lift the main truss frame system (10) to a lifting position, the installation method further comprises the following steps: Using the hoisting unit (2) to lift the main truss frame system (10) so that the main truss frame system (10) is separated from the fulcrum of the limiting slot (4); After the main truss frame system (10) is separated from the fulcrum of the limit slot (4), the main truss frame system (10) is swung as a whole close to the pier body to a first horizontal position.

4. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 2, characterized in that: After the bottom basket system (11) is connected to the main truss frame system (10) via the suspension rod (12) at the lifting position, the installation method further comprises: Using the hoisting unit (2) to lift the main frame (1) of the bridge-building machine, the bottom basket system (11) is separated from the bottom fulcrum; After the bottom basket system (11) is separated from the bottom fulcrum, the main frame (1) of the bridge-building machine is swung as a whole close to the pier body to a second horizontal position.

5. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 3, characterized in that: After the main truss frame system (10) is swung as a whole close to the pier body to a first horizontal position, the installation method further comprises: After the main truss frame system (10) is swung and stabilized, check whether the hoisting unit (2) operates abnormally; If there is an abnormality, the hoisting unit (2) is maintained; otherwise, the hoisting unit (2) continues to be used to lift the main truss frame system (10) to the lifting position.

6. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 1, characterized in that: Before hoisting the main frame (1) of the bridge-building machine on both sides of the pier bottom to the positioning height position, the installation method further comprises: At least two running systems (5) are installed on the bridge deck along the longitudinal direction of the bridge, and the running systems (5) are kept parallel to each other; Installing the front C hook (3) on the walking system (5) along the transverse direction of the bridge; A lifting support system (6) is installed on the front C hook (3) along the longitudinal bridge direction, and a moving device is arranged on one side of each winch unit (2) on the lifting support system (6); The alignment adjustment device is arranged on the mobile device, and a pulley block (20) is connected to the mobile device, so that one end of the steel wire rope on the hoisting unit (2) is connected to the main frame (1) of the bridge-building machine through the pulley block (20).

7. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 6, characterized in that: After the lifting support system (6) is installed on the front C hook (3) along the longitudinal direction of the bridge, a rear anchor device (7) is arranged at the center point of the lifting support system (6) in the longitudinal direction of the bridge to anchor the lifting support system (6) to the bridge deck.

8. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 7, characterized in that: After the lifting support system (6) is anchored to the bridge deck, the two groups of hoisting machine sets (2) can be operated synchronously on both sides of the bridge deck or independently on one side.

9. The overall installation method of a high pier down-type bridge-building machine as claimed in claim 8, characterized in that: When the two groups of the hoisting machine groups (2) are operated synchronously on both sides of the bridge deck or independently on one side, a reaction rope (8) is connected between the hoisting machine groups (2) and the lifting support system (6); and after the operation of the hoisting machine groups (2) is completed, the reaction rope (8) is released.

10. The overall installation method of a high pier down-type bridge-building machine according to claim 6, characterized in that: Before the front C hook (3) is installed on the walking system (5) along the transverse direction of the bridge: a supporting device (9) is arranged on the bridge deck, and the front C hook (3) is supported on the supporting device (9).

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