Movable formwork bridging machine and mounting method thereof

Abstract

The invention discloses a movable formwork bridge fabrication machine and an installation method thereof, and relates to the technical field of bridge construction.The movable formwork bridge fabrication machine comprises a bearing main beam, a formwork, a formwork structure and longitudinal movement auxiliary supporting legs, the bearing main beam extends in the longitudinal bridge direction, and the two main supporting legs are arranged at the two ends of the bearing main beam in the extending direction of the bearing main beam respectively; the formwork is arranged on the bearing main beam; the formwork structure is hung on the bearing main beam through the formwork. The longitudinal moving auxiliary supporting legs are installed on the bearing main beam. Through cooperation of the bearing main beam, the formwork, the formwork structure, the longitudinal movement auxiliary supporting legs and the control system, height adjustment of the formwork structure and movement of the formwork structure in the longitudinal bridge direction are achieved. The technical problem that in the prior art, a movable formwork bridge fabrication machine formwork structure is insufficient in moving and adjusting flexibility is effectively solved, the requirements of different bridge sections and construction technologies are met, and the construction quality of a bridge is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and particularly relates to a movable formwork bridge erector and an installation method thereof. Background Art

[0002] The movable formwork bridge erector is an important equipment in bridge construction, and its technology has evolved from the early simple formwork support to the modern automated and intelligent movable formwork system. With the continuous expansion of the scale of bridge construction and the increasing complexity of construction techniques, the traditional movable formwork bridge erector has been difficult to meet the requirements of modern bridge construction, and there is an urgent need to develop a more advanced, efficient and safe movable formwork bridge erector.

[0003] Currently, the common movable formwork realizes the movement and positioning of the formwork structure through the legs and traveling mechanisms arranged on the bridge piers.

[0004] However, the existing movable formwork bridge erector has insufficient flexibility in the movement and adjustment of its formwork structure and cannot adapt to the requirements of different bridge cross-sections and construction techniques. Summary of the Invention

[0005] The main object of the present invention is to propose a movable formwork bridge erector and an installation method thereof, aiming to solve the technical problem that the existing movable formwork bridge erector has insufficient flexibility in the movement and adjustment of its formwork structure and cannot adapt to the requirements of different bridge cross-sections and construction techniques.

[0006] To achieve the above object, the movable formwork bridge erector proposed by the present invention includes:

[0007] A load-bearing main girder, the load-bearing main girder extends along the longitudinal direction of the bridge, two main legs are respectively arranged at both ends of the load-bearing main girder along its extending direction, and the two main legs are respectively connected to the top of the bridge pier through support cylinders;

[0008] A formwork, the formwork is arranged on the load-bearing main girder;

[0009] A formwork structure, the formwork structure is suspended from the load-bearing main girder through the formwork;

[0010] A longitudinal movement auxiliary leg, the longitudinal movement auxiliary leg is installed on the load-bearing main girder, and the longitudinal movement auxiliary leg is arranged between the two main legs. The longitudinal movement auxiliary leg is connected with a longitudinal movement cylinder, and the longitudinal movement cylinder is used to push the load-bearing main girder and the formwork to drive the formwork structure to move along the longitudinal direction of the bridge;

[0011] A control system, both the longitudinal movement cylinder and the support cylinder are electrically connected to the control system.

[0012] In one embodiment, the formwork support includes a cantilever beam and a suspension arm. The cantilever beam is connected to the suspension arm by a pin shaft, and the suspension arm is mounted on the load-bearing main beam.

[0013] In one embodiment, the cantilever beam is a triangular truss structure, and both sides of the load-bearing main beam are respectively connected to the cantilever beam; the suspension arm is a truss structure, and the suspension arm is connected to the load-bearing main beam by an adjustable strut.

[0014] In one embodiment, the formwork structure is suspended from the load-bearing main beam through the cantilever beam.

[0015] In one embodiment, the formwork structure includes a bottom form, side forms, and an inner form. The bottom form, the side forms, and the inner form are connected to form the inner and outer surfaces of the box girder.

[0016] In one embodiment, the number of the bottom forms is multiple, and the multiple bottom forms are arranged at intervals along the transverse bridge direction. Adjacent two bottom forms are butted through a splicing plate; the inner form is a wooden form, and a wooden skeleton is arranged on the inner form.

[0017] In one embodiment, the main support leg includes a hanging wheel, a roller box, a sliding cross beam, a column, and a stay cable. The hanging wheel is connected to the top of the roller box, the roller box is connected to the bottom end of the column, the sliding cross beam is of a box structure, the top end of the column is connected to the sliding cross beam, one end of the stay cable is connected to the top of the column, and the other end of the stay cable is connected to the bridge pier; the formwork support is connected to the column.

[0018] In one embodiment, the column is a hollow steel pipe structure, and the bottom end of the column is connected to the support oil cylinder through a flange plate. The support oil cylinder extends vertically and is mounted on the top of the bridge pier.

[0019] In one embodiment, stiffening ribs are arranged inside the sliding cross beam.

[0020] The present invention also provides a method for installing a movable formwork bridge building machine for the movable formwork bridge building machine as described above. The method for installing the movable formwork bridge building machine includes:

[0021] Install the load-bearing main beam on the bridge pier;

[0022] Connect the two main support legs to the top of the bridge pier respectively through the support oil cylinder;

[0023] Utilize the control system to control the support oil cylinder to drive the main support leg to drive the load-bearing main beam to move vertically, and control the longitudinal movement oil cylinder to drive the longitudinal movement auxiliary support leg to drive the load-bearing main beam to move longitudinally along the bridge to the construction position;

[0024] Suspend the formwork structure by using the formwork support to complete the installation of the movable formwork bridge erector.

[0025] The technical solution of the present invention realizes the height adjustment of the formwork structure and its longitudinal movement through the cooperation of the load-bearing main girder, formwork support, formwork structure, longitudinal movement auxiliary outrigger, and control system. Among them, the load-bearing main girder extends along the longitudinal bridge direction and is stably supported on the bridge pier through the main outriggers and support cylinders at both ends, providing a reliable support foundation for the formwork support and formwork structure. The formwork support is arranged on the load-bearing main girder, and the formwork structure is suspended on the load-bearing main girder through the formwork support, realizing the stable support of the formwork structure. Moreover, the formwork support can be adjusted according to the requirements of different bridge cross-sections to adapt to different construction process requirements. The longitudinal movement auxiliary outrigger is installed on the load-bearing main girder, located between the two main outriggers, and is connected with a longitudinal movement cylinder, which is used to push the load-bearing main girder and formwork support to drive the formwork structure to move along the longitudinal bridge direction, improving the flexibility and accuracy of the formwork structure movement. The longitudinal movement cylinder and the support cylinder are both electrically connected to the control system. The control system can accurately control the telescopic movement of the cylinders according to the construction requirements, realizing the automatic movement and height adjustment of the formwork structure, and improving the construction efficiency and accuracy. Due to the reasonable setting and coordinated cooperation of each part of the structure, the technical problem of insufficient flexibility in the movement and adjustment of the formwork structure of the movable formwork bridge erector in the prior art is effectively solved, meeting the requirements of different bridge cross-sections and construction processes, and improving the construction quality of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 It is a schematic structural diagram of an embodiment of the movable formwork bridge erector provided by the present invention;

[0028] Figure 2 It is a schematic structural diagram of another embodiment of the movable formwork bridge erector provided by the present invention;

[0029] Figure 3 It is a schematic structural diagram of an embodiment of the main outrigger provided by the present invention;

[0030] Figure 4 It is a schematic flow diagram of an embodiment of the installation method of the movable formwork bridge erector provided by the present invention.

[0031] Explanation of the reference numerals in the drawings:

[0032] 100, Load-bearing main girder; 200, Main supporting leg; 300, Formwork support; 400, Formwork structure; 500, Longitudinal movement auxiliary support leg; 600, Longitudinal movement oil cylinder; 700, Supporting oil cylinder; 210, Hanging wheel; 220, Roller wheel box; 230, Sliding cross beam; 240, Column; 310, Cantilever beam; 320, Boom; 410, Bottom formwork; 420, Side formwork.

[0033] The realization of the object of the present invention, its functional characteristics and advantages will be further described in conjunction with the embodiments with reference to the accompanying drawings. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If this specific posture changes, then such directional indications will also change accordingly.

[0036] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] The moving formwork bridge erector is an indispensable and important equipment in bridge construction. Its technical development has experienced a process from the early simple formwork support to the modern automated and intelligent moving formwork system. With the continuous expansion of the scale of bridge construction and the increasing complexity of construction technology, the traditional moving formwork bridge erector has been difficult to meet the requirements of modern bridge construction, and it is urgent to develop a more advanced, efficient and safe moving formwork bridge erector.

[0038] At present, common movable formwork carriers achieve the movement and positioning of the formwork structure through the legs and traveling mechanisms arranged on the bridge piers.

[0039] However, for the existing bridge-building machines with movable formwork carriers, the movement and adjustment flexibility of their formwork structures are insufficient and cannot meet the requirements of different bridge cross-sections and construction processes.

[0040] To solve this technical problem, the present invention provides a bridge-building machine with a movable formwork carrier and its installation method.

[0041] Please refer to Figures 1 to 3 , in an embodiment of the present invention, the bridge-building machine with a movable formwork carrier includes a load-bearing main beam 100, a formwork support 300, a formwork structure 400, a longitudinal movement auxiliary leg 500, and a control system. The load-bearing main beam 100 extends along the longitudinal direction of the bridge. Two main legs 200 are respectively arranged at both ends of the load-bearing main beam 100 along its extending direction. The two main legs 200 are respectively connected to the top of the bridge pier through support cylinders 700. The formwork support 300 is arranged on the load-bearing main beam 100. The formwork structure 400 is suspended from the load-bearing main beam 100 through the formwork support 300. The longitudinal movement auxiliary leg 500 is installed on the load-bearing main beam 100, and the longitudinal movement auxiliary leg 500 is arranged between the two main legs 200. The longitudinal movement auxiliary leg 500 is connected with a longitudinal movement cylinder 600. The longitudinal movement cylinder 600 is used to push the load-bearing main beam 100 and the formwork support 300 to drive the formwork structure 400 to move along the longitudinal direction of the bridge. The longitudinal movement cylinder 600 and the support cylinder 700 are both electrically connected to the control system.

[0042] It should be noted that the longitudinal direction and transverse direction of the bridge in this application are in the same horizontal plane, and the longitudinal direction, transverse direction, and vertical direction are equivalent to the X-direction, Y-direction, and Z-direction in the well-known coordinate system.

[0043] Specifically, the bridge-building machine with a movable formwork carrier includes a load-bearing main beam 100, a formwork support 300, a formwork structure 400, a longitudinal movement auxiliary leg 500, and a control system. Among them, the load-bearing main beam 100 extends along the longitudinal direction of the bridge. Two main legs 200 are respectively arranged at both ends of the load-bearing main beam 100. The two main legs 200 are respectively connected to the top of the bridge pier through support cylinders 700. Through the arrangement of the main legs 200 and the support cylinders 700, the load-bearing main beam 100 can be stably supported on the bridge pier, providing a reliable support foundation for the formwork support 300 and the formwork structure 400.

[0044] The formwork support 300 is arranged on the load-bearing main beam 100, and the formwork structure 400 is suspended from the load-bearing main beam 100 through the formwork support 300. By suspending the formwork structure 400 from the load-bearing main beam 100 through the formwork support 300, stable support of the formwork structure 400 can be achieved. At the same time, the formwork support 300 can be adjusted according to the requirements of different bridge cross-sections to meet the requirements of different construction processes.

[0045] The longitudinal movement auxiliary support leg 500 is installed on the load-bearing main beam 100, and the longitudinal movement auxiliary support leg 500 is arranged between two main support legs 200. The longitudinal movement auxiliary support leg 500 is connected with a longitudinal movement oil cylinder 600, and the longitudinal movement oil cylinder 600 is used to push the load-bearing main beam 100 and the formwork support 300 so as to drive the formwork structure 400 to move along the longitudinal bridge direction. By arranging the longitudinal movement auxiliary support leg 500 and the longitudinal movement oil cylinder 600, the precise movement and positioning of the formwork structure 400 in the longitudinal bridge direction can be realized, the flexibility and precision of the movement of the formwork structure 400 are improved, and the requirements of different bridge construction are met.

[0046] Both the longitudinal movement oil cylinder 600 and the support oil cylinder 700 are electrically connected to the control system. The control system can precisely control the telescoping of the longitudinal movement oil cylinder 600 and the support oil cylinder 700 according to the construction requirements, realize the automatic movement and height adjustment of the formwork structure 400, and improve the construction efficiency and precision.

[0047] In specific implementation, the load-bearing main beam 100 can adopt a steel structure beam, which has sufficient strength and stiffness and can bear the action of the formwork structure 400 and construction loads. The main support leg 200 can adopt a box structure, and reinforcing ribs are arranged inside to improve the stability and load-bearing capacity of the main support leg 200. The support oil cylinder 700 can select a large-tonnage hydraulic cylinder, and through cooperation with the control system, the precise adjustment of the height of the main support leg 200 is realized to meet the construction requirements of different pier heights.

[0048] The formwork support 300 can adopt a truss structure and is connected with the load-bearing main beam 100 through pin shafts and adjustable struts to realize the rapid installation and disassembly of the formwork support 300. The formwork structure 400 can include a bottom form 410, side forms 420 and an inner form, which are connected by bolts or pin shafts to form the inner and outer surfaces of the bridge box girder. The bottom form 410 can be spliced by multiple steel formworks and connected by splicing plates. The side forms 420 and the inner form can adopt standardized steel formworks, and a wooden skeleton is arranged on the inner form to facilitate on-site construction.

[0049] The longitudinal movement auxiliary support leg 500 can adopt a box structure, and reinforcing ribs are arranged inside to improve its stability and load-bearing capacity. The longitudinal movement oil cylinder 600 can select a hydraulic cylinder with a large stroke and high precision, and cooperate with the control system to realize the precise movement and positioning of the formwork structure 400 in the longitudinal bridge direction.

[0050] The control system can adopt a PLC programmable controller, and the displacement and pressure of the longitudinal movement oil cylinder 600 and the support oil cylinder 700 are monitored in real time through sensors. According to the preset control program, the telescoping of the oil cylinder is automatically adjusted to realize the automatic movement and height adjustment of the formwork structure 400 and improve the construction efficiency and precision.

[0051] In the technical solution provided by the present invention, through the cooperation of the load-bearing main beam 100, the formwork support 300, the formwork structure 400, the longitudinal movement auxiliary support leg 500 and the control system, the height adjustment of the formwork structure 400 and its movement in the longitudinal bridge direction are realized. Among them, the load-bearing main beam 100 extends along the longitudinal bridge direction and is stably supported on the bridge pier through the main support legs 200 at both ends and the support cylinders 700, providing a reliable support foundation for the formwork support 300 and the formwork structure 400. The formwork support 300 is arranged on the load-bearing main beam 100, and the formwork structure 400 is suspended on the load-bearing main beam 100 through the formwork support 300, realizing the stable support of the formwork structure 400, and the formwork support 300 can be adjusted according to the requirements of different bridge sections to adapt to different construction process requirements. The longitudinal movement auxiliary support leg 500 is installed on the load-bearing main beam 100, located between the two main support legs 200, and is connected with the longitudinal movement cylinder 600, which is used to push the load-bearing main beam 100 and the formwork support 300, driving the formwork structure 400 to move along the longitudinal bridge direction, improving the flexibility and accuracy of the movement of the formwork structure 400. Both the longitudinal movement cylinder 600 and the support cylinder 700 are electrically connected to the control system. The control system can accurately control the telescopic of the cylinders according to the construction requirements, realizing the automatic movement and height adjustment of the formwork structure 400, improving the construction efficiency and accuracy. Due to the reasonable setting and coordinated cooperation of each part of the structure, the technical problem of insufficient flexibility in the movement and adjustment of the formwork structure 400 of the existing movable formwork bridge building machine is effectively solved, meeting the requirements of different bridge sections and construction processes, and improving the construction quality of the bridge.

[0052] Please continue to refer to Figure 1 and Figure 2 , in the embodiment of the present invention, the formwork support 300 includes a cantilever beam 310 and a suspension arm 320. The cantilever beam 310 is connected to the suspension arm 320 through a pin shaft, and the suspension arm 320 is installed on the load-bearing main beam 100.

[0053] Specifically, the cantilever beam 310 is made of I-beam or box-shaped steel structure, and the length direction is perpendicular to the load-bearing main beam 100. One end is hinged to the suspension arm 320 through a pin shaft, and the other end is fixedly connected to the side form 420 of the formwork structure 400. The suspension arm 320 is made of I-beam steel structure, and the length direction is parallel to the load-bearing main beam 100. One end is connected to the web of the load-bearing main beam 100 through high-strength bolts, and the other end is hinged to the cantilever beam 310 through a pin shaft. The suspension arm 320 and the cantilever beam 310 are hinged through a pin shaft to form a hinge structure, enabling the cantilever beam 310 to rotate around the axis of the pin shaft to adapt to the height adjustment requirements of the formwork structure 400.

[0054] During the installation of the formwork structure 400, first, a number of jibs 320 are arranged at intervals along the length direction of the load-bearing main girder 100 and fixed to the web of the load-bearing main girder 100 by high-strength bolts. Then, one end of the cantilever beam 310 is hinged to the jib 320, and the other end is fixedly connected to the side form 420 of the formwork structure 400. By adjusting the position of the jib 320 on the load-bearing main girder 100 and the hinge angle between the cantilever beam 310 and the jib 320, the height adjustment of the formwork structure 400 in the vertical direction can be achieved to meet the construction requirements of different bridge cross-sections.

[0055] During the bridge construction process, when it is necessary to adjust the height of the formwork structure 400, it can be achieved by changing the position of the jib 320 on the load-bearing main girder 100 and the hinge angle between the cantilever beam 310 and the jib 320. When it is necessary to move the formwork structure 400 longitudinally along the bridge, the longitudinal movement oil cylinder 600 drives the load-bearing main girder 100 and the formwork support 300 to move together. Since the cantilever beam 310 is fixedly connected to the formwork structure 400, the formwork structure 400 also moves accordingly.

[0056] Compared with the prior art, in this embodiment, the formwork support 300 adopts a structure combining the cantilever beam 310 and the jib 320. The cantilever beam 310 and the jib 320 are connected by a hinge, and the jib 320 and the load-bearing main girder 100 are connected by bolts. The installation is simple and the adjustment is convenient. By changing the position of the jib 320 on the load-bearing main girder 100 and the hinge angle between the cantilever beam 310 and the jib 320, the height of the formwork structure 400 can be flexibly adjusted to meet the construction requirements of different bridge cross-sections. At the same time, since the cantilever beam 310 is fixedly connected to the formwork structure 400, during the movement of the formwork support 300, it can drive the formwork structure 400 to move stably, ensuring the construction quality.

[0057] As an alternative embodiment, during the installation of the formwork structure 400, first, one end of the cantilever beam 310 is hinged to the jib 320, and the other end is fixedly connected to the bottom form 410. Then, the jib 320 is connected to the load-bearing main girder 100 by high-strength bolts. By adjusting the hinge angle between the cantilever beam 310 and the jib 320 and the connection position of the jib 320 on the load-bearing main girder 100, the precise adjustment of the formwork structure 400 in the vertical and horizontal directions can be achieved to meet the construction requirements of different bridge cross-sections and curve radii.

[0058] Please continue to refer to Figure 1 and Figure 2 , in the embodiment of the present invention, the cantilever beam 310 is a triangular truss structure, and both sides of the load-bearing main girder 100 are respectively connected to the cantilever beam 310; the jib 320 is a truss structure, and the jib 320 is connected to the load-bearing main girder 100 through an adjustable strut.

[0059] Specifically, the cantilever beam 310 adopts a triangular truss structure composed of an upper chord, a lower chord, and web members. The upper chord and the lower chord are connected by the web members to form a stable triangular structural unit. Both ends of the cantilever beam 310 are respectively connected to both sides of the load-bearing main beam 100. The connection method can be bolt connection or welding, etc., to ensure firm and reliable connection. Connecting plates are provided on both sides of the load-bearing main beam 100, and connection holes matching the cantilever beam 310 are opened on the connecting plates. The cantilever beam 310 is connected and fixed to the connecting plates through high-strength bolts.

[0060] The jib 320 adopts a truss structure composed of longitudinal members and transverse members. The longitudinal members and the transverse members are connected by bolts or welding to form an integrated truss structure. One end of the jib 320 is hinged to the cantilever beam 310, and the other end is connected to the load-bearing main beam 100 through an adjustable strut. One end of the adjustable strut is hinged to the jib 320, and the other end is connected to the load-bearing main beam 100 through a threaded connector. By adjusting the nut on the threaded connector, the length of the adjustable strut can be changed, thereby adjusting the angle between the jib 320 and the load-bearing main beam 100 and realizing the height adjustment of the formwork structure 400.

[0061] During the installation process of the formwork structure 400, first, both ends of the cantilever beam 310 are respectively connected and fixed to both sides of the load-bearing main beam 100, and then one end of the jib 320 is hinged to the cantilever beam 310, and the other end is connected to the load-bearing main beam 100 through an adjustable strut. By adjusting the length of the adjustable strut, the angle between the jib 320 and the load-bearing main beam 100 can be changed, thereby adjusting the height and inclination angle of the formwork structure 400 to meet the construction requirements of different bridge sections.

[0062] During the bridge construction process, when it is necessary to adjust the height and inclination angle of the formwork structure 400, it can be achieved by adjusting the length of the adjustable strut. When it is necessary to move the formwork structure 400 longitudinally along the bridge, the longitudinal movement oil cylinder 600 drives the load-bearing main beam 100 and the formwork support 300 to move together. Since the cantilever beam 310 is fixedly connected to the load-bearing main beam 100 and the jib 320 is connected to the load-bearing main beam 100 through an adjustable strut, the formwork structure 400 also moves accordingly.

[0063] Compared with the prior art, in this embodiment, the cantilever beam 310 with a triangular truss structure and the jib 320 with a truss structure are adopted, which improves the stability and load-bearing capacity of the formwork support 300. The connection method between the cantilever beam 310 and the load-bearing main beam 100 is simple and reliable. The jib 320 is connected to the load-bearing main beam 100 through an adjustable strut, with flexible adjustment and strong adaptability. By changing the length of the adjustable strut, the height and inclination angle of the formwork structure 400 can be accurately adjusted to meet the construction requirements of different bridge sections. At the same time, since the cantilever beam 310 and the jib 320 are reliably connected to the load-bearing main beam 100, during the movement of the formwork support 300, the formwork structure 400 can be driven to move smoothly, ensuring the construction quality.

[0064] As an alternative embodiment, the cantilever beam 310 adopts a space truss structure, which is composed of upper chord bars, lower chord bars, web members and diagonal web members. The upper chord bars and the lower chord bars are connected by web members and diagonal web members to form a stable space truss structure. The two ends of the cantilever beam 310 are respectively welded to both sides of the load-bearing main beam 100 to ensure the connection strength and stiffness. The boom 320 adopts a steel pipe truss structure, which is composed of longitudinal steel pipes and transverse steel pipes. The longitudinal steel pipes and the transverse steel pipes are connected by bolts. One end of the boom 320 is hinged to the cantilever beam 310, and the other end is hinged to the load-bearing main beam 100 through an adjustable strut. The adjustable strut adopts a hydraulic cylinder, and by controlling the telescopic movement of the hydraulic cylinder, stepless adjustment of the included angle between the boom 320 and the load-bearing main beam 100 can be achieved.

[0065] In this embodiment, the cantilever beam 310 adopts a space truss structure, which has higher stability and load-bearing capacity and can meet the requirements of large-span and heavy-load bridge construction. The boom 320 adopts a steel pipe truss structure, which is light in weight and convenient for installation and disassembly. The adjustable strut adopts a hydraulic cylinder, which has high adjustment accuracy and fast response speed and can achieve precise adjustment of the formwork structure 400. Compared with the prior art, the formwork support 300 of this embodiment has higher structural stability, stronger load-bearing capacity, higher adjustment accuracy and higher automation degree, and can further improve the efficiency and quality of bridge construction.

[0066] In the embodiment of the present invention, the formwork structure 400 is suspended from the load-bearing main beam 100 through the cantilever beam 310.

[0067] Specifically, one end of the cantilever beam 310 is hinged to the load-bearing main beam 100, and the other end is hinged to the ear plate of the formwork structure 400. The ear plate of the formwork structure 400 is welded to the top of the formwork structure 400, and a hinge hole for hinging with the cantilever beam 310 is provided on the ear plate. The cantilever beam 310 and the ear plate are hinged through a pin shaft. The pin shaft passes through the hinge holes on the cantilever beam 310 and the ear plate and is locked with a nut. Through the hinge connection, the formwork structure 400 can rotate and adjust its height under the support of the cantilever beam 310 to adapt to the construction requirements of different bridge cross-sections.

[0068] During the installation process of the formwork structure 400, first hinge one end of the cantilever beam 310 to the load-bearing main beam 100, then hoist the formwork structure 400 in place, align the ear plate with the other end of the cantilever beam 310, insert the pin shaft and lock it with a nut. By adjusting the hinge angle between the cantilever beam 310 and the load-bearing main beam 100 and the hinge angle between the formwork structure 400 and the cantilever beam 310, precise adjustment of the formwork structure 400 in the vertical and horizontal directions can be achieved to meet the construction requirements of different bridge cross-sections.

[0069] During the bridge construction process, when it is necessary to adjust the height and tilt angle of the formwork structure 400, it can be achieved by changing the hinge angles between the cantilever beam 310 and the load-bearing main beam 100 and between the formwork structure 400 and the cantilever beam 310. When it is necessary to move the formwork structure 400 longitudinally along the bridge, the longitudinal movement oil cylinder 600 drives the load-bearing main beam 100 and the formwork support 300 to move together. Since the formwork structure 400 is suspended on the cantilever beam 310, the formwork structure 400 also moves accordingly.

[0070] Compared with the prior art, in this embodiment, the cantilever beam 310 is used to suspend the formwork structure 400 on the load-bearing main beam 100, which simplifies the connection method between the formwork structure 400 and the load-bearing main beam 100, reduces the on-site installation workload, and improves the construction efficiency. At the same time, by adjusting the hinge angles between the cantilever beam 310 and the load-bearing main beam 100 and between the formwork structure 400 and the cantilever beam 310, the height and tilt angle of the formwork structure 400 can be flexibly adjusted to meet the construction requirements of different bridge cross-sections. The suspended connection method can also effectively reduce the shaking and displacement of the formwork structure 400 during the movement process, ensuring the construction quality.

[0071] As an alternative embodiment, the formwork structure 400 is suspended on the load-bearing main beam 100 by multiple parallelly arranged cantilever beams 310. The multiple cantilever beams 310 are arranged at intervals longitudinally along the bridge. One end of each cantilever beam 310 is hinged to the load-bearing main beam 100, and the other end is hinged to multiple lifting lugs of the formwork structure 400. The lifting lugs are evenly distributed longitudinally and transversely along the formwork structure 400, and each lifting lug is provided with a hinge hole for hinging with the cantilever beam 310. The cantilever beam 310 and the lifting lug are hinged by a pin shaft. The pin shaft passes through the hinge holes on the cantilever beam 310 and the lifting lug and is locked with a nut. By means of multi-point suspension, the stability and load-bearing capacity of the formwork structure 400 can be further improved, and the deformation of the formwork structure 400 during the construction process can be reduced.

[0072] In this embodiment, multiple parallelly arranged cantilever beams 310 are used to suspend the formwork structure 400 on the load-bearing main beam 100, forming a stable multi-point support system. The lifting lugs are evenly distributed longitudinally and transversely along the formwork structure 400, forming multiple hinge points with the cantilever beam 310, effectively dispersing the load and reducing the deformation of the formwork structure 400. By adjusting the hinge angles between each cantilever beam 310 and the load-bearing main beam 100 and between the formwork structure 400 and each cantilever beam 310, precise adjustment of the formwork structure 400 in the vertical and horizontal directions can be achieved to meet the construction requirements of different bridge cross-sections. Compared with the prior art, this embodiment adopts a multi-point suspension connection method, further improving the stability and load-bearing capacity of the formwork structure 400 and ensuring the construction quality and safety.

[0073] Please continue to refer to Figure 1 andFigure 2 In an embodiment of the present invention, the formwork structure 400 includes a bottom form 410, side forms 420, and an inner form. The bottom form 410, side forms 420, and inner form are connected to form the inner and outer surfaces of the box girder.

[0074] Specifically, the bottom form 410 constitutes the bottom structure of the box girder, providing a stable foundation for the entire box girder. The bottom form 410 can be made of steel to ensure sufficient strength and durability. The side forms 420 and the inner form respectively form the outer and inner surfaces of the box girder, and they can be connected to the bottom form 410 by bolts or welding. Through this connection method, the stability of the formwork structure 400 during the construction process and the precise control of the final structural dimensions can be ensured.

[0075] The side form 420 is an adjustable structure and can adjust the width of the box girder according to the specific bridge design requirements. The inner form is responsible for forming the size and shape of the internal space of the box girder, and its design can also be adjusted as needed to adapt to different engineering requirements.

[0076] During the construction process, first, the bottom form 410 is assembled, and then the side forms 420 and the inner form are fixed to the bottom form 410. By adjusting the positions of the side forms 420 and the inner form, the width of the box girder and the size of the internal space can be controlled, thus meeting different design specifications. This assembly method not only ensures the flexibility and adjustability of the construction but also guarantees the stability and safety of the structure.

[0077] The formwork structure 400 in this embodiment, through the effective combination of the bottom form 410, side forms 420, and inner form, not only achieves precise control of the size and shape of the box girder but also optimizes the construction process and improves the construction efficiency.

[0078] In an embodiment of the present invention, the number of bottom forms 410 is multiple, and the multiple bottom forms 410 are arranged at intervals along the transverse direction of the bridge. The adjacent two bottom forms 410 are butt-jointed through splicing plates; the inner form is a wooden form, and a wooden skeleton is arranged on the inner form.

[0079] Specifically, the bottom form 410 usually constitutes the main load-bearing part of the bridge box girder. By using multiple bottom forms 410 arranged at intervals, the position of each bottom form 410 can be adjusted according to the specific requirements of the bridge structure, so as to adapt to bridge designs with different widths and load requirements. The use of splicing plates further increases the connection stability between the bottom forms 410, making the entire bridge structure more solid and reliable during the construction and use processes.

[0080] The inner formwork uses wooden formwork and is equipped with a wooden skeleton, which not only reduces the material cost but also facilitates on-site installation and disassembly. The addition of the wooden skeleton enhances the structural strength of the wooden formwork, ensuring construction safety and the reusability of the formwork. The use of wooden formwork also facilitates necessary cutting and adjustment at the construction site to precisely match the specific bridge structure requirements.

[0081] During the construction process, first, the bottom formwork 410 is placed at intervals and fixedly connected through splicing plates. Subsequently, the inner formwork is installed according to the internal dimensions of the box girder, and the stability and accuracy of the wooden formwork are ensured through the support of the wooden skeleton. This installation method enables the entire formwork structure 400 to have sufficient bearing capacity and good adjustment flexibility, and can quickly adapt to different construction environments and requirements.

[0082] Please continue to refer to Figure 3 , in the embodiment of the present invention, the main support leg 200 includes a hanging wheel 210, a roller box 220, a sliding cross beam 230, a column 240, and a stay cable. The hanging wheel 210 is connected to the top of the roller box 220, the roller box 220 is connected to the bottom end of the column 240, the sliding cross beam 230 is of a box structure, the top end of the column 240 is connected to the sliding cross beam 230, one end of the stay cable is connected to the top of the column 240, and the other end of the stay cable is connected to the bridge pier; the formwork support 300 is connected to the column 240.

[0083] Specifically, the hanging wheel 210 is arranged at the top of the roller box 220 and is used to move along the erected beam section or steel wire rope during bridge construction, enabling the main support leg 200 to move as the construction progresses. The roller box 220 is connected to the bottom end of the column 240 and plays a role in supporting and transmitting loads. The column 240 adopts a box section and has high flexural and torsional stiffness, capable of effectively resisting various loads during the construction process.

[0084] The sliding cross beam 230 is of a box structure and is connected to the top end of the column 240. It can slide longitudinally along the bridge to adjust the position of the main support leg 200 to meet the needs of different construction stages. One end of the stay cable is connected to the top of the column 240, and the other end is connected to the bridge pier. Through the tensile force of the stay cable, the bending moment and deformation of the column 240 can be effectively reduced, improving the overall stability of the main support leg 200.

[0085] The formwork support 300 is connected to the column 240. The load is transmitted to the roller box 220 and the hanging wheel 210 through the column 240, and then the formwork support 300 and the formwork structure 400 move through the movement of the hanging wheel 210 along the beam section or steel wire rope. During the construction process, by adjusting the position of the sliding cross beam 230 and the tensile force of the stay cable, the stress state of the main support leg 200 can be optimized to ensure that the main support leg 200 can stably and reliably support the formwork support 300 and the formwork structure 400 at different construction stages.

[0086] Compared with the prior art, the main leg 200 structure provided in this embodiment forms a stable and reliable support system by reasonably arranging the hanging wheels 210, roller box 220, sliding cross beam 230, column 240 and stay cables. The box-shaped column 240 and sliding cross beam 230 have excellent mechanical properties and can effectively resist bending moment and torsion; the setting of the stay cables greatly improves the overall stability of the main leg 200 and reduces the internal force and deformation of the column 240. This main leg 200 structure has strong adaptability, can meet the needs of different construction stages, and ensure the safety and quality of bridge construction.

[0087] The main leg 200 structure provided in this embodiment constructs a stable, reliable and adaptable support system by adopting components such as hanging wheels 210, roller box 220, box-shaped sliding cross beam 230, box-shaped column 240 and stay cables. It effectively solves the problems of insufficient bearing capacity and poor stability of the main leg 200 in the prior art.

[0088] In the embodiment of the present invention, the column 240 is a hollow steel pipe structure. The bottom end of the column 240 is connected to the support oil cylinder 700 through a flange. The support oil cylinder 700 extends vertically and is installed on the top of the bridge pier.

[0089] Specifically, the column 240 adopts a hollow steel pipe structure. Compared with a solid structure, while ensuring sufficient strength and stiffness, the self-weight of the column 240 is greatly reduced, which is convenient for transportation and installation. The hollow structure also facilitates the arrangement of internal stiffeners and connectors to further improve the mechanical properties of the column 240. The cross-sectional shape of the column 240 can be optimized according to the mechanical characteristics, such as circular, rectangular or polygonal, etc., to obtain the best bending and torsional resistance performance.

[0090] The bottom end of the column 240 is connected to the support oil cylinder 700 through a flange. The flange is welded to the bottom of the column 240 and is connected to the top flange of the support oil cylinder 700 through high-strength bolts. This connection method is simple and reliable, and is convenient for installation and disassembly. The support oil cylinder 700 extends vertically and is installed on the top of the bridge pier. By telescoping the support oil cylinder 700, the height of the column 240 can be adjusted to meet the needs of different construction stages. The support oil cylinder 700 can be selected as a large-tonnage hydraulic cylinder to ensure sufficient bearing capacity and stability.

[0091] During the construction process, by adjusting the telescopic amount of the support cylinder 700 through the control system, the precise adjustment of the height of the column 240 can be achieved, enabling the formwork 300 and the formwork structure 400 to always maintain an appropriate height. When it is necessary to move the formwork 300, the support cylinder 700 shortens, causing the column 240 to disengage from the bridge pier, and the formwork 300 moves along the load-bearing main beam 100 under the push of the longitudinal movement cylinder 600; when it is necessary to fix the formwork 300, the support cylinder 700 extends, causing the column 240 to re-support on the bridge pier, providing stable support for the formwork 300 and the formwork structure 400.

[0092] Compared with the prior art, the design of the column 240 and the support cylinder 700 provided in this embodiment has significant advantages. The column 240 with a hollow steel pipe structure has high strength, large stiffness, and light weight, which is convenient for transportation and installation; the flange connection method is simple and reliable, which is convenient for disassembly, assembly, and maintenance; the vertically extending support cylinder 700 can conveniently adjust the height of the column 240 to meet the needs of different construction stages. These optimized designs effectively improve the support strength and stability of the main support leg 200, ensuring the safety and efficiency of bridge construction.

[0093] In the embodiment of the present invention, stiffeners are provided inside the sliding crossbeam 230.

[0094] Specifically, the sliding crossbeam 230 adopts a box-shaped structure. The box-shaped structure has high bending and torsional stiffness and can effectively resist various loads during the construction process. By arranging stiffeners inside the box-shaped structure, the strength and stiffness of the sliding crossbeam 230 can be further improved, and the deformation can be reduced. The stiffeners can adopt a combined arrangement of longitudinal and transverse directions. The longitudinal stiffeners are arranged along the length direction of the sliding crossbeam 230, and the transverse stiffeners are arranged along the width direction of the sliding crossbeam 230, and the two intersect to form a grid-like strengthening structure.

[0095] The cross-sectional shape of the stiffeners can be optimized according to the stress characteristics. Common cross-sectional shapes include rectangles, I-beams, T-beams, etc. The rectangular cross-section is simple to manufacture, but the bending efficiency is relatively low; the I-beam and T-beam cross-sections have high bending efficiency, but the manufacturing is relatively complex. The appropriate cross-sectional shape can be selected according to actual needs. The connection between the stiffeners and the sliding crossbeam 230 can be welded or bolted. The welded connection has high strength, but the construction is relatively complex; the bolted connection is simple in construction, but the connection strength is relatively low. Similarly, the appropriate connection method can be selected according to actual needs.

[0096] During the construction process, the sliding crossbeam 230 slides on top of the column 240 to adjust the position of the main support leg 200 to meet the requirements of different construction stages. The sliding crossbeam 230 is subjected to complex loads from the column 240 and the stay cables, which may generate relatively large bending moments and shear forces. The setting of the stiffeners can effectively improve the bending and shear resistance of the sliding crossbeam 230, reduce deformation, and ensure that the sliding crossbeam 230 can still reliably support the column 240 and the stay cables under complex loads, thus guaranteeing the stability of the main support leg 200.

[0097] Compared with the prior art, the sliding crossbeam 230 with stiffeners provided in this embodiment has significant advantages. The sliding crossbeam 230 with a box-shaped structure has high strength and stiffness and can effectively resist complex loads; the setting of the stiffeners further improves the strength and stiffness of the sliding crossbeam 230 and reduces deformation. By reasonably arranging the positions of the stiffeners and selecting appropriate cross-sectional shapes and connection methods, the optimal strengthening effect can be obtained to ensure the reliable support of the sliding crossbeam 230 during the construction process.

[0098] Please continue to refer to Figures 1 to 3 and refer to Figure 4 The present invention also provides a method for installing a traveling formwork bridge erector, which is used for the traveling formwork bridge erector as described above. The method for installing the traveling formwork bridge erector includes:

[0099] Step S10: Install the load-bearing main girder 100 on the pier.

[0100] Step S20: Connect the two main support legs 200 to the top of the pier respectively through the support cylinders 700.

[0101] Step S30: Use the control system to control the support cylinders 700 to drive the main support legs 200 to drive the load-bearing main girder 100 to move vertically, and control the longitudinal movement cylinders 600 to drive the longitudinal movement auxiliary support legs 500 to drive the load-bearing main girder 100 to move longitudinally along the bridge to the construction position.

[0102] Step S40: Hang the formwork structure 400 with the formwork 300 to complete the installation of the traveling formwork bridge erector.

[0103] Specifically, the traveling formwork bridge erector in this embodiment includes a load-bearing main girder 100, a formwork 300, a formwork structure 400, longitudinal movement auxiliary support legs 500, and a control system. Among them, the load-bearing main girder 100 extends longitudinally along the bridge, and two main support legs 200 are respectively arranged at both ends of the load-bearing main girder 100. The two main support legs 200 are respectively connected to the top of the pier through the support cylinders 700.

[0104] During the actual construction process, first hoist the prefabricated load-bearing main beam 100 into place so that it spans between two adjacent piers. Then, place the two main legs 200 at the preset positions on the top of the piers respectively, and reliably connect the main legs 200 to the piers through the support cylinders 700. One end of the support cylinder 700 is hinged to the bottom of the main leg 200, and the other end is hinged to the anchor on the top of the pier. By extending and retracting the support cylinder 700, the height and inclination angle of the main leg 200 can be adjusted to keep the load-bearing main beam 100 in a horizontal state.

[0105] Use the control system to control the support cylinder 700 to drive the main leg 200 to drive the load-bearing main beam 100 to move vertically, and control the longitudinal movement cylinder 600 to drive the longitudinal movement auxiliary leg 500 to drive the load-bearing main beam 100 to move longitudinally along the bridge to the construction position.

[0106] The longitudinal movement auxiliary leg 500 is installed on the load-bearing main beam 100, and the longitudinal movement auxiliary leg 500 is located between the two main legs 200. The longitudinal movement auxiliary leg 500 is connected with the longitudinal movement cylinder 600, and the longitudinal movement cylinder 600 is used to push the load-bearing main beam 100 and the formwork support 300 to drive the formwork structure 400 to move longitudinally along the bridge. Both the longitudinal movement cylinder 600 and the support cylinder 700 are electrically connected to the control system, and the extension and retraction amount and speed of the cylinders can be accurately controlled through the control system.

[0107] After the connection between the main leg 200 and the pier is completed, start the control system and input the coordinates of the target construction position. The control system calculates the required extension and retraction amounts of the support cylinder 700 and the longitudinal movement cylinder 600 according to the difference between the current position and the target position. First, control the support cylinder 700 to extend or retract to drive the main leg 200 and the load-bearing main beam 100 to move vertically and adjust the height of the load-bearing main beam 100 to reach the target construction elevation. Then, control the longitudinal movement cylinder 600 to extend or retract to drive the longitudinal movement auxiliary leg 500 to push the load-bearing main beam 100 to move longitudinally along the bridge until the target construction position is reached.

[0108] Suspend the formwork structure 400 by using the formwork support 300 to complete the installation of the moving formwork bridge machine.

[0109] The formwork support 300 is arranged on the load-bearing main beam 100, and the formwork structure 400 is suspended on the load-bearing main beam 100 through the formwork support 300. After the load-bearing main beam 100 moves into place, use a crane to hoist the prefabricated formwork structure 400 onto the formwork support 300 and reliably connect the formwork structure 400 to the formwork support 300 through the anchor. The formwork support 300 can be adjusted according to the requirements of different bridge cross-sections to meet different construction process requirements.

[0110] For ease of understanding, a specific implementation is shown here. Taking a prestressed concrete simply supported box girder bridge with a span of 40m and a box girder height of 3m as an example, it is described in detail from the perspective of a mobile formwork bridge-building machine according to the above steps. First, the load-bearing main beam 100 with a length of 42m is hoisted between the two piers, and the two main legs 200 are placed at preset positions on the top of the piers respectively. The main legs 200 are hinged to the piers through the supporting cylinders 700, and the telescopic amount of the supporting cylinders 700 is adjusted to keep the load-bearing main beam 100 horizontal. Then, the longitudinal auxiliary legs 500 and the longitudinal cylinders 600 are installed on the load-bearing main beam 100, and they are connected to the control system.

[0111] Start the control system, input the coordinates of the target construction position, and the control system automatically calculates the required extension and retraction of the supporting cylinder 700 and the longitudinal cylinder 600. Control the supporting cylinder 700 to extend, driving the main legs 200 and the load-bearing main beam 100 to rise to the target construction elevation of 3.5m. Then, control the longitudinal cylinder 600 to extend, driving the longitudinal auxiliary legs 500 to push the load-bearing main beam 100 to move 10m along the longitudinal direction of the bridge to reach the starting point of the first casting section.

[0112] Finally, the prefabricated box beam inner and outer molds are hoisted onto the mold frame 300 and connected to the mold frame 300 through anchors. According to the design drawings, the width and inclination angle of the mold frame 300 are adjusted to match the template structure 400 with the box beam section. At this point, the installation of the mobile formwork bridge machine is completed and concrete pouring construction can be carried out.

[0113] The installation method of the mobile formwork bridge-building machine provided in this embodiment is to install the load-bearing main beam 100 on the bridge pier, connect the main support leg 200 with the bridge pier by using the supporting oil cylinder 700, and then drive the load-bearing main beam 100 to move vertically and longitudinally by controlling the supporting oil cylinder 700 and the longitudinal oil cylinder 600 through the control system, and finally suspend the template structure 400 by using the formwork 300, so as to realize the rapid installation and precise positioning of the mobile formwork bridge-building machine. Compared with the prior art, this method makes full use of the telescopic movement of the supporting oil cylinder 700 and the longitudinal oil cylinder 600, improves the mobile flexibility and positioning accuracy of the mobile formwork bridge-building machine, and can adapt to the requirements of different bridge sections and construction processes.

[0114] It should be understood that the present mobile formwork bridge-building machine installation method is used for the above-mentioned mobile formwork bridge-building machine, and the specific structure of the mobile formwork bridge-building machine refers to the above-mentioned embodiment. Since the present mobile formwork bridge-building machine installation method adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0115] The above are only exemplary embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A mobile formwork bridge-building machine, characterized in that: include: A load-bearing main beam, the load-bearing main beam extends along the longitudinal direction of the bridge, two main legs are respectively arranged at both ends of the load-bearing main beam along the extension direction thereof, and the two main legs are respectively connected to the top of the pier through a supporting cylinder; A formwork frame, wherein the formwork frame is arranged on the load-bearing main beam; A template structure, wherein the template structure is suspended from the load-bearing main beam through the template frame; A longitudinal shift auxiliary leg, the longitudinal shift auxiliary leg is installed on the load-bearing main beam, and the longitudinal shift auxiliary leg is arranged between the two main legs, the longitudinal shift auxiliary leg is connected to a longitudinal shift oil cylinder, and the longitudinal shift oil cylinder is used to push the load-bearing main beam and the formwork to drive the formwork structure to move along the longitudinal bridge direction; A control system, wherein the longitudinal movement cylinder and the supporting cylinder are both electrically connected to the control system.

2. The mobile formwork bridge-building machine according to claim 1, characterized in that: The formwork comprises a cantilever beam and a suspension arm, the cantilever beam is connected to the suspension arm via a pin shaft, and the suspension arm is installed on the load-bearing main beam.

3. The mobile formwork bridge-building machine according to claim 2, characterized in that: The cantilever beam is a triangular truss structure, and the two sides of the load-bearing main beam are respectively connected to the cantilever beam; the boom is a truss structure, and the boom is connected to the load-bearing main beam through an adjustable strut.

4. The mobile formwork bridge-building machine according to claim 2, characterized in that: The template structure is suspended on the load-bearing main beam through the cantilever beam.

5. The mobile formwork bridge-building machine according to claim 4, characterized in that: The template structure comprises a bottom template, a side template and an inner template, and the bottom template, the side template and the inner template are connected to form the inner surface and the outer surface of the box beam.

6. The mobile formwork bridge-building machine according to claim 5, characterized in that: There are multiple bottom molds, which are spaced apart in the transverse direction, and two adjacent bottom molds are butt-jointed via a splicing plate; the inner mold is a wooden mold, and a wooden frame is arranged on the inner mold.

7. The mobile formwork bridge-building machine according to any one of claims 1 to 6, characterized in that: The main support leg includes a hanging wheel, a roller box, a sliding beam, a column and a cable. The hanging wheel is connected to the top of the roller box, the roller box is connected to the bottom of the column, the sliding beam is a box-type structure, the top of the column is connected to the sliding beam, one end of the cable is connected to the top of the column, and the other end of the cable is connected to the pier; the formwork is connected to the column.

8. The mobile formwork bridge-building machine according to claim 7, characterized in that: The column is a hollow steel pipe structure. The bottom end of the column is connected to the supporting cylinder through a flange. The supporting cylinder extends vertically and is installed on the top of the pier.

9. The mobile formwork bridge-building machine according to claim 7, characterized in that: A reinforcing rib is arranged inside the sliding crossbeam.

10. A method for installing a mobile formwork bridge-building machine, characterized in that: For a mobile formwork bridge-building machine according to any one of claims 1 to 9, the installation method of the mobile formwork bridge-building machine comprises: Installing the load-bearing main beam on the bridge pier; The two main legs are respectively connected to the top of the pier through the supporting oil cylinder; The control system is used to control the supporting oil cylinder to drive the main legs to drive the load-bearing main beam to move vertically, and to control the longitudinal movement oil cylinder to drive the longitudinal movement auxiliary legs to drive the load-bearing main beam to move along the longitudinal bridge direction to the construction position; The formwork structure is suspended by using the formwork to complete the installation of the mobile formwork bridge-building machine.

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