Mounting method of movable formwork bridging machine

Abstract

The invention relates to the technical field of bridge construction, in particular to an installation method of a movable formwork bridge fabrication machine, the movable formwork bridge fabrication machine comprises a supporting leg mechanism, a main beam mechanism, a guide beam mechanism, an outrigger mechanism and an external hanging mechanism, and the external hanging mechanism comprises a hanging outer rib, an outer mold, a bottom mold system and an end mold system; the installation method comprises the steps that all parts of the movable formwork bridging machine are transported to an installation site; supporting leg mechanisms are installed on the piers; all the sections of the main beam mechanism are assembled into a whole; the main beam mechanism is hoisted to the landing leg mechanism to fall on the landing leg mechanism; all the sections of the guide beam mechanism are assembled into a whole; the guide beam mechanism is connected to the front end of the main beam mechanism in a hoisting mode; the cantilever beam mechanisms are symmetrically hoisted to the two sides of the main beam mechanism; and the external hanging mechanism is hoisted to the cantilever beam mechanism, and a formwork assembly used for pouring a bridge is arranged on the inner side of the external hanging mechanism. According to the scheme, the defects that in the prior art, a movable formwork is complex in installation, long in consumed time and poor in safety are overcome, and efficient, safe and high-adaptability installation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to an installation method of a mobile formwork bridge-building machine. Background Art

[0002] In modern bridge construction, mobile formwork bridge-building machines are widely used in the construction of various bridges due to their high efficiency and flexibility. However, the installation process of mobile formwork in existing technologies remains complex and time-consuming. This is particularly true for the first hole, which requires installation on existing abutments and beams. This process not only increases the difficulty but also the risks of construction. Although existing mobile formwork bridge-building machine technology has made certain advances, significant drawbacks remain, such as poor safety and insufficient precision during installation.

[0003] Given this background, traditional installation methods require the deployment of mobile formwork to precede the construction of a series of temporary abutments or beam decks to support the mobile formwork structure. This is not only time-consuming but also adds unnecessary costs. Furthermore, due to a lack of effective installation guidance and precise control, existing installation methods can easily lead to insufficient formwork precision, increasing the time and cost of maintenance and adjustments. Furthermore, most technical solutions fail to effectively address the stability issues associated with installing mobile formwork on vulnerable surfaces of existing bridge structures, further increasing construction risks. Summary of the Invention

[0004] The present invention provides an installation method for a mobile formwork bridge-building machine, which is used to solve the defects of the prior art that the mobile formwork installation is complicated, time-consuming and unsafe, and realizes efficient, safe and adaptable installation.

[0005] The present invention provides an installation method for a mobile formwork bridge-building machine, wherein the mobile formwork bridge-building machine includes a leg mechanism, a main beam mechanism, a guide beam mechanism, a cantilever beam mechanism, and an external hanging mechanism; the installation method comprises: transporting the components of the mobile formwork bridge-building machine to an installation site; installing the leg mechanism on a bridge pier; assembling the various segments of the main beam mechanism into a whole; hoisting the main beam mechanism onto the leg mechanism and placing it in position; assembling the various segments of the guide beam mechanism into a whole; hoisting the guide beam mechanism to the front end of the main beam mechanism; hoisting the cantilever beam mechanism symmetrically to both sides of the main beam mechanism; hoisting the external hanging mechanism onto the cantilever beam mechanism, wherein a formwork assembly for casting a bridge is provided on the inner side of the external hanging mechanism.

[0006] According to one embodiment of the present invention, the step of installing the support leg mechanism includes: arranging multiple rows of steel pipes with diameters of 630×8 mm and 530×7 mm based on the bridge pier to form a steel pipe bracket for supporting the main center support leg; transversely arranging 5I40b I-beam load-bearing beams between the multiple rows of steel pipes; and fixing the steel pipe bracket to the pier body by using wall hoops.

[0007] According to one embodiment of the present invention, the step of hoisting the main beam mechanism to the support leg mechanism includes: using two 450-ton truck cranes to lift the two ends of the main beam mechanism at corresponding hoisting positions respectively, so as to hoist the main beam mechanism to the pier top support legs in place.

[0008] According to one embodiment of the present invention, the main beam mechanism includes a longitudinal steel box beam and a transverse connection; in the step of assembling the segments of the main beam mechanism into a whole, it includes: assembling the longitudinal steel box beams of multiple segments into a whole, and measuring the elevations of the longitudinal steel box beams of each segment to ensure consistency; assembling the transverse connection between the longitudinal steel box beams on both sides that are symmetrical.

[0009] According to one embodiment of the present invention, the step of assembling the longitudinal steel box girders of multiple segments into a whole further includes: installing node plates between the adjacent longitudinal steel box girders by high-strength bolts to fix adjacent segments of the longitudinal steel box girders; after the assembly is completed, performing a tightening check on the node plates, and the tightening check includes using a torque wrench to check the tightening torque of the bolts one by one.

[0010] According to one embodiment of the present invention, the guide beam mechanism includes a guide beam body and a connecting beam; in the step of hoisting and connecting the guide beam mechanism to the front end of the main beam mechanism, it includes: using two 80-ton truck cranes to respectively lift the two ends of the guide beam body at corresponding hoisting positions to assemble the guide beam body to the end of the longitudinal beam steel box girder; after the hoisting is completed, assembling the connecting beam between the two parallel guide beam bodies.

[0011] According to one embodiment of the present invention, the step of assembling the segments of the guide beam mechanism into a whole includes: assembling the guide beam mechanism of multiple segments into a whole; before hoisting, installing a connecting plate at the joint end of the guide beam mechanism to be used for assembling the guide beam mechanism to the front end of the main beam mechanism in the air.

[0012] According to one embodiment of the present invention, the step of symmetrically hoisting the cantilever beam mechanism to both sides of the main beam mechanism includes: symmetrically assembling the cantilever beam mechanism to both horizontal sides of the main beam mechanism for bolting.

[0013] According to one embodiment of the present invention, the formwork assembly includes a side form fixedly arranged on the inner side of the external hanging mechanism, and a bottom form for sealing the bottom and an end form for closing the end face; in the step of hoisting the external hanging mechanism to the cantilever beam mechanism, it includes: setting a 3-ton electric hoist mechanism below the main beam mechanism; using the electric hoist mechanism to hoist the bottom form and the end form on the inner side of the external hanging mechanism; and tying the bottom form and the end form with steel bars.

[0014] According to one embodiment of the present invention, it also includes: setting a safety ladder cage on the side of the bridge pier at the construction site, the safety ladder cage including a base, a bottom platform, a bottom vertical pole, a second platform, stairs, stair handrails, a safety net and a safety door; installing the safety ladder cage layer by layer to a preset working height, and installing wall connecting parts every 3 to 6 meters.

[0015] The installation method of the mobile formwork bridge-building machine provided by the present invention comprises the following steps: transporting the components of the mobile formwork bridge-building machine (including the outrigger mechanism, the main beam mechanism, the guide beam mechanism, the cantilever beam mechanism and the external hanging mechanism, wherein the external hanging mechanism includes the hanging external ribs, the external formwork and the bottom formwork system, and the end formwork system) to the installation site; installing the outrigger mechanism on the bridge pier to ensure the stability and safety of the foundation support; assembling the various segments of the main beam mechanism into a whole on the ground, and strictly measuring the elevation of each segment to ensure the overall consistency of the main beam; using the hoisting equipment to The main beam mechanism is hoisted onto the support leg mechanism and accurately positioned, and a dedicated hoisting area is set up to ensure the safety and stability of the hoisting. The various segments of the guide beam mechanism are assembled into a whole on the ground and hoisted and connected to the front end of the main beam mechanism to ensure its linearity and stability. The cantilever beam mechanism is symmetrically hoisted to both sides of the main beam mechanism to ensure its stability during construction. Finally, the external hanging mechanism is hoisted onto the cantilever beam mechanism. The inner side of the external hanging mechanism is provided with a formwork assembly for pouring the bridge to ensure the quality and accuracy of the concrete pouring. Through the above steps, the present invention realizes the efficient, safe, and adaptable installation of a mobile formwork bridge-building machine, solving the problems of complex installation, long time consumption, and poor safety in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a flow chart of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0018] Figure 2It is a side structural schematic diagram of the mobile formwork bridge-building machine provided by the present invention.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the mobile formwork bridge-building machine provided by the present invention.

[0020] Figure 4 This is one of the construction status schematic diagrams of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0021] Figure 5 This is the second schematic diagram of the construction status of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0022] Figure 6 This is the third schematic diagram of the construction status of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0023] Figure 7 This is the fourth schematic diagram of the construction status of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0024] Figure 8 This is the fifth construction status schematic diagram of the installation method of the mobile formwork bridge-building machine provided by the present invention.

[0025] Reference numerals: 10. Bridge pier; 11. Outrigger mechanism; 12. Main beam mechanism; 121. Longitudinal steel box girder; 122. Horizontal connection; 13. Guide beam mechanism; 14. Cantilever beam mechanism; 15. External mechanism; 151. Side formwork; 152. Bottom formwork; 16. Electric hoist mechanism. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] The following combination Figures 1 to 8 The specific embodiment of the installation method of the mobile formwork bridge-building machine of the present invention is described.

[0029] The present invention provides a method for installing a mobile formwork bridge-building machine, such as Figure 2 and Figure 3 As shown, the mobile formwork bridge-building machine includes a support leg mechanism 11, a main beam mechanism 12, a guide beam mechanism 13, a cantilever beam mechanism 14, and an external hanging mechanism 15.

[0030] Figure 1 It is a flow chart of the installation method of the mobile formwork bridge-building machine provided by the present invention, as shown in FIG. Figure 1 As shown, the method includes the following: Step 110: Transport the various components of the mobile formwork bridge-building machine to the installation site. Specifically, use specialized transportation tools (such as flatbed trucks) to transport the prefabricated components of the mobile formwork bridge-building machine (including but not limited to the components and modular components of the outrigger mechanism 11, main beam mechanism 12, guide beam mechanism 13, cantilever beam mechanism 14, and external attachment mechanism 15) from the factory to the construction site. During transportation, ensure the stability and safety of all components to prevent damage from bumps.

[0031] Step 120: Install the outrigger mechanism 11 on the pier 10. Specifically, first determine the exact position of the outrigger mechanism 11. Then, use a lifting device to hoist the outrigger mechanism 11 to the designated location on the pier 10 and securely mount it to the pier 10 using a fixture. During the installation process, ensure the verticality and stability of the outrigger mechanism 11, laying the foundation for subsequent installation steps.

[0032] Step 130: Assemble the main beam structure 12 into a complete structure. Specifically, complete the initial assembly of the main beam structure 12 segments on the ground or other flat surface, ensuring the fit and tightness of the interfaces. Use specialized connectors and fasteners to connect the segments to form a complete main beam structure.

[0033] Step 140: Hoist the main beam mechanism 12 onto the outrigger mechanism 11 and place it in place. Specifically, a large crane can be used to steadily hoist the assembled main beam mechanism 12 and accurately place it on the outrigger mechanism 11. During the hoisting process, professional technicians are required to direct the operation and ensure that the main beam mechanism 12 is correctly positioned and make necessary adjustments to ensure its levelness and stability.

[0034] Step 150: Assemble the various segments of the guide beam mechanism 13 into a complete structure. Specifically, similar to the assembly of the main beam mechanism 12, the guide beam mechanism 13 is initially assembled on the ground to ensure the precise connection between the components. Afterwards, the various components are securely connected using appropriate fasteners.

[0035] Step 160: Hoist and connect the guide beam mechanism 13 to the front end of the main beam mechanism 12. Specifically, a crane is used to lift the guide beam mechanism 13 and precisely align it with the reserved interface at the front end of the main beam mechanism 12. After alignment, high-strength bolts and other fasteners are used to reinforce the connection to ensure strength and reliability.

[0036] Step 170: symmetrically hoist the cantilever beam mechanism 14 to both sides of the main beam mechanism 12. Specifically, the cantilever beam mechanism 14 is generally designed as a symmetrical structure, and therefore needs to be hoisted on both sides of the main beam mechanism 12. Similarly, after the cantilever beam mechanism 14 is hoisted into place using a crane, it is precisely docked and fixed.

[0037] Step 180: Hoist the external attachment mechanism 15 onto the cantilever beam mechanism 14. The internal surface of the external attachment mechanism 15 houses the formwork components required for bridge construction. Specifically, the external attachment mechanism 15 contains the formwork components required for bridge construction, which are installed within the external attachment mechanism 15. A crane is used to hoist the entire external attachment mechanism 15 onto the cantilever beam mechanism 14 and secure it at pre-set connection points, ensuring the correct positioning of the formwork components to facilitate subsequent beam casting.

[0038] The present invention addresses the drawbacks of existing mobile formwork installation techniques, such as complexity, time consumption, and poor safety, by optimizing the installation process. This method achieves efficient, safe, and adaptable installation. Furthermore, this method effectively reduces construction time and costs, improves construction quality and safety, and is of great significance for advancing bridge construction technology.

[0039] Ideally, before construction, a site inspection should be conducted to ensure the site is flat, solid, and meets design requirements. The assembly site needs to be leveled. The foundations of the hoisting area and temporary material storage area should be replaced with 50cm thick brick slag and compacted, or hardened with 20cm thick C20 concrete. After compaction, the foundation should be tested for bearing capacity. If necessary, steel plates should be laid beneath the crane positions, with a bearing capacity of no less than 250kPa. The mobile formwork is hoisted using two Sany Heavy Industry 450t cranes, the largest available type. These cranes have a deadweight of 72t and a maximum counterweight of 142t. A 2.5m x 2.5m x 0.2m roadbed box is used beneath the crane outriggers, and the outrigger pads have a surface area of approximately 6.25 square meters. The two cranes operate at a constant speed and level during the lifting process. The cranes can support a maximum main box girder weight of 1 / 2t, and the hoisted main girder weighs 162t.

[0040] The above-mentioned leg mechanism 11 includes a main middle leg, a fixed middle leg, a front leg, etc. According to a method for installing a mobile formwork bridge-building machine of the present invention, the step of installing the leg mechanism 11 preferably includes: Step 121: Arrange multiple rows of steel pipes with diameters of 630 x 8 mm and 530 x 7 mm around pier 10 to form a steel pipe support for the main center leg. Specifically, steel pipes of appropriate specifications are selected based on the actual size and load-bearing capacity requirements of pier 10 (preferably, 630 mm in diameter and 8 mm thick, and 530 mm and 7 mm thick, respectively). According to the pre-determined design drawings, multiple rows of steel pipes are arranged on top of and around pier 10, with a certain spacing between each row to ensure the stability and load-bearing capacity of the steel pipe support. These steel pipes can be secured to each other by welding or bolting to form a sturdy steel pipe support system to support the main center leg of the mobile formwork bridge construction machine.

[0041] Step 122: 5140b I-beams are installed horizontally between the rows of steel pipes. The steel pipe supports are secured to the shaft of pier 10 using wall hoops. Specifically, 5140b I-beams are installed horizontally between the constructed steel pipe supports as load-bearing beams to enhance the rigidity and stability of the entire support system. These I-beams are connected to the steel pipe supports via welding or high-strength bolts to form a single, integrated structure. To further enhance the stability of the steel pipe supports, wall hoops are used to secure them to the shaft of pier 10, ensuring they do not shift or tilt during construction, thereby ensuring safety and accuracy.

[0042] The above-described method and steps for installing the main and middle legs in the first hole not only effectively improve the installation efficiency and quality of the leg mechanism 11 of the mobile formwork bridge-building machine, but also significantly reduce safety risks during the installation process, ensuring the smooth progress of the entire bridge construction process. Furthermore, this design can also accommodate different types of bridge pier 10 structures, increasing the applicability and flexibility of the mobile formwork bridge-building machine.

[0043] Furthermore, according to a method for installing a mobile formwork bridge-building machine of the present invention, Figure 4 and Figure 5 As shown, the step of hoisting the main beam mechanism 12 onto the support leg mechanism 11 preferably includes: Step 141. Use two 450-ton truck cranes to lift the two ends of the main beam mechanism 12 at the corresponding lifting positions to lift the main beam mechanism 12 into place on the pier top support legs. Specifically, in order to ensure that the main beam mechanism 12 can be lifted into place safely and accurately, two 450-ton truck cranes are selected to perform this task. First, determine the optimal lifting positions of the two truck cranes and ensure that the distance between them is moderate so that the load is evenly distributed. Then, fix the lifting slings to the two ends of the main beam mechanism 12 respectively, and command the two truck cranes to lift synchronously. During the entire lifting process, the posture and position of the main beam mechanism 12 should be monitored in real time to ensure that it rises smoothly and is finally accurately placed at the predetermined position of the pier top support legs.

[0044] It's understandable that when selecting a lifting device, its load capacity should be considered to ensure construction safety. Optimally, when using a dual-crane system, the load of a single crane should not exceed 80% of the rated lifting capacity, and the lifting capacity of the dual-crane system should not exceed 75% of the lifting capacity of both cranes. Specifically, a single crane load not exceeding 80% of the rated lifting capacity means that the maximum load each 450-ton crane can handle during actual operation should not exceed 360 tons (450 tons x 80% = 360 tons), providing a sufficient safety margin to prevent accidents caused by overloading. The lifting capacity of the dual-crane system should not exceed 75% of the lifting capacity of both cranes: When two 450-ton cranes are jointly lifting the main beam mechanism 12, the total lifting capacity should not exceed 675 tons (450 tons x 2 x 75% = 675 tons).

[0045] Through the above measures, the safety and accuracy of the main beam mechanism 12 hoisting process can be effectively guaranteed, construction risks can be reduced, and construction efficiency can be improved. At the same time, a reasonable hoisting plan can also help protect equipment, extend equipment service life, and reduce construction costs.

[0046] Ideally, a dedicated lifting area should be established during the main beam lifting process, demarcated by cordoned-off tape. A dedicated person should be assigned to direct both cranes simultaneously, ensuring synchronization. During the operation, any personnel who discovers an abnormality has the authority to immediately call a halt. Operations can only resume after the cause has been identified and the fault has been corrected. When both cranes simultaneously lift a load, they should stop when the load reaches a height of 10 cm and conduct a recheck to confirm that everything is working properly. Only then can the cranes resume their operations.

[0047] Furthermore, according to the installation method of a mobile formwork bridge-building machine of the present invention, the main beam mechanism 12 includes a longitudinal steel box beam 121 and a transverse beam 122. In the step of assembling the segments of the main beam mechanism 12 into a whole, it is preferred to include: Step 131, assemble the longitudinal steel box girders 121 of multiple segments into a whole, and measure the elevation of the longitudinal steel box girders 121 of each segment to ensure consistency. Specifically, first, on the ground or other flat assembly platform, splice the longitudinal steel box girders 121 of multiple segments in sequence according to the requirements of the design drawings. During the splicing process, use high-precision measuring instruments (such as a total station or a level) to measure the elevation of each segment to ensure that the elevations of all segments are consistent. If elevation differences are found, adjustments should be made in a timely manner until the elevations of all segments are completely consistent. In addition, the butt joints between the segments need to be checked to ensure their straightness and tightness. If necessary, use welding or high-strength bolts to fix them to ensure the stability and rigidity of the overall structure.

[0048] Step 132, assemble the cross-link 122 between the symmetrical longitudinal steel box girders 121 on both sides. Specifically, after the longitudinal steel box girders 121 are assembled, the cross-link 122 needs to be assembled between the longitudinal steel box girders 121 on both sides. The function of the cross-link 122 is to connect the longitudinal steel box girders 121 on both sides to increase the overall rigidity and stability of the main beam mechanism 12. First, the various components of the cross-link 122 are transported to the assembly platform and preliminarily assembled according to the design requirements. Then, use a crane to lift the cross-link 122, align it with the reserved connection points on the longitudinal steel box girders 121 on both sides, and perform precise docking. After the docking is completed, use high-strength bolts or welding to fix the cross-link 122 on the longitudinal steel box girders 121 to ensure that the connection is firm and reliable. During the entire assembly process, the overall posture and elevation of the main beam mechanism 12 should be continuously monitored to ensure that it meets the design requirements.

[0049] Through the above steps, the accuracy and stability of the main beam mechanism 12 during the assembly process can be ensured, laying a solid foundation for subsequent hoisting and installation work. At the same time, reasonable assembly technology and strict quality control measures can effectively reduce errors during the construction process and improve construction efficiency and safety.

[0050] Furthermore, according to the installation method of the mobile formwork bridge-building machine of the present invention, in the step of assembling the longitudinal steel box beams 121 of the plurality of segments into a whole, the method further comprises: Step 1311, install the node plate between the adjacent longitudinal steel box girders 121 by high-strength bolts to fix the adjacent segments of the longitudinal steel box girders 121. Specifically, during the assembly process, first place the node plate on the butt joint surface of two adjacent longitudinal steel box girders 121 segments. The function of the node plate is to increase the rigidity and stability of the connection part. Then, use high-strength bolts to fix the node plate on the butt joint surface of the longitudinal steel box girders 121. When installing the bolts, ensure that the bolts are arranged neatly, the spacing is uniform, and the specifications and quantity of the bolts meet the design requirements. During the installation process, temporary fixtures or support devices can be used to maintain the alignment and stability of the longitudinal steel box girders 121 segments to ensure that the bolts can pass through the node plate and the longitudinal steel box girders 121 smoothly.

[0051] Ideally, tighten bolts from the center joint toward the ends. High-strength bolts should be inserted in the same direction. For ease of installation, insert bolts from the inside out at the joints of box-section components and tighten on the outside. If this is difficult, insert the bolts in the opposite direction.

[0052] Step 1312: After assembly is complete, perform a tightening check on the gusset plate. This includes using a torque wrench to check the tightening torque of each bolt individually. Specifically, after assembly is complete, all installed gusset plates and bolts need to be tightened to ensure the reliability and safety of the connection. Use a torque wrench to check the tightening torque of each bolt individually to ensure that it meets the design torque value. The torque value should be determined based on the bolt specifications and material properties and is generally clearly stated in the design documents. During the inspection, if the torque of a bolt is found to be insufficient, it should be tightened immediately until all bolts reach the specified torque value. In addition, anti-loosening devices (such as spring washers, anti-loosening nuts, etc.) can be used to further ensure the tightening effect of the bolts and prevent loosening during subsequent lifting and use. The side with the table of the nut of the torsion shear type high-strength bolt connection pair should face the chamfered side of the washer and should face the tail of the bolt.

[0053] Furthermore, according to the installation method of a mobile formwork bridge-building machine of the present invention, the guide beam mechanism 13 includes a guide beam body and a connecting beam. In the above-mentioned step of hoisting and connecting the guide beam mechanism 13 to the front end of the main beam mechanism 12, the following steps are included: Step 161, use two 80-ton truck cranes to lift the two ends of the guide beam body at the corresponding lifting positions respectively, so as to assemble the guide beam body to the end of the longitudinal beam steel box girder 121. Specifically, select two 80-ton truck cranes, determine their optimal lifting positions, and ensure that the distance between the two cranes is moderate so that the load is evenly distributed. Then, fix the lifting slings to the two ends of the guide beam body respectively. Before lifting, carefully check whether the connection of the lifting slings is firm to ensure that there are no safety hazards. During the lifting process, experienced operators direct the two truck cranes to lift synchronously to ensure that the guide beam body rises smoothly. When the guide beam body is raised to the appropriate height, slowly move it to the end of the longitudinal beam steel box girder 121 for precise alignment. After the alignment is completed, use high-strength bolts or welding to fix the guide beam body to the end of the longitudinal beam steel box girder 121 to ensure the firmness and stability of the connection.

[0054] Step 162, after the hoisting is completed, assemble the connecting beam between the two parallel guide beam bodies. Specifically, after the guide beam bodies are hoisted and fixed, the connecting beam needs to be assembled between the two parallel guide beam bodies. First, the various components of the connecting beam are transported to the hoisting site and preliminarily assembled according to the design requirements. Then, use a crane to lift the connecting beam, align it with the reserved connection point between the two guide beam bodies, and perform precise docking. After the docking is completed, use high-strength bolts or welding to fix the connecting beam to the guide beam body to ensure that the connection is firm and reliable. During the entire assembly process, the overall posture and elevation of the guide beam mechanism 13 should be continuously monitored to ensure that it meets the design requirements.

[0055] The above steps ensure the accuracy and stability of the guide beam mechanism 13 during the hoisting and assembly process, improving the overall performance of the mobile formwork bridge-building machine. A reasonable hoisting plan and strict assembly process can effectively reduce errors during construction, improving efficiency and safety. Furthermore, ensuring a secure and reliable connection between the guide beam mechanism 13 and the main beam mechanism 12 provides a solid foundation for subsequent construction operations.

[0056] like Figure 6 As shown, according to a method for installing a mobile formwork bridge-building machine of the present invention, in the step of assembling the segments of the guide beam mechanism 13 into a whole, the method includes: Step 151: Assemble the guide beam mechanisms 13 of multiple segments into a whole. Specifically, on the ground or other flat assembly platform, splice the guide beam mechanisms 13 of multiple segments in sequence according to the requirements of the design drawings. During the splicing process, use a high-precision measuring instrument (such as a total station or level) to measure the elevation and axis of each segment to ensure that the elevation and axis of all segments are consistent. If any elevation or axis discrepancies are found, they should be adjusted in a timely manner until the elevation and axis of all segments are completely consistent. In addition, the joints between the segments need to be checked to ensure their straightness and tightness. If necessary, use welding or high-strength bolts to fix them to ensure the stability and rigidity of the overall structure.

[0057] Preferably, the guide beam is assembled in sections of 1, 2, or 3, and is assembled on the ground. The bottom support is a steel pier with a diameter of 200 mm and a height of 600 mm. Before hoisting, the guide beam is pre-assembled at the joint end with a connecting plate to facilitate the section assembly of the guide beam in the air.

[0058] Step 152: Before hoisting, install a connecting plate at the joint end of the guide beam mechanism 13 to facilitate mid-air assembly of the guide beam mechanism 13 to the front end of the main beam mechanism 12. Specifically, after the guide beam mechanism 13 is assembled, a connecting plate needs to be installed at the joint end of the guide beam mechanism 13 to facilitate mid-air assembly of the guide beam mechanism 13 and the front end of the main beam mechanism 12. Prepare appropriate connecting plates and high-strength bolts based on design requirements. The size and thickness of the connecting plate should meet design standards to ensure sufficient strength and rigidity. Place the connecting plate at the predetermined position at the joint end of the guide beam mechanism 13, ensuring that the connecting plate and the guide beam mechanism 13 are fully aligned. A temporary fixture or support device can be used to maintain the stability of the connecting plate. Use high-strength bolts to preliminarily secure the connecting plate to the joint end of the guide beam mechanism 13. During initial securing, the bolts do not need to be fully tightened; simply ensure that the connecting plate is secure. Use a measuring instrument to check the alignment of the connecting plate to ensure its accurate position. If any deviation occurs, make adjustments promptly. After confirming the correct position of the connecting plate, use a torque wrench to check and tighten all bolts one by one to ensure that they meet the design torque value. The torque value should be determined by the specifications and material properties of the bolts, which are generally clearly stated in the design documents.

[0059] Furthermore, according to a method for installing a mobile formwork bridge-building machine of the present invention, in the step of symmetrically hoisting the cantilever beam mechanism 14 to both sides of the main beam mechanism 12, the method includes: Step 171: Symmetrically assemble the cantilever beam mechanism 14 to the horizontal sides of the main beam mechanism 12 and bolt them together. By ensuring the symmetry and balance of the assembly and hoisting of the cantilever beam mechanism 14, the stability and safety of the entire mobile formwork bridge-building machine are guaranteed.

[0060] Preferably, before lifting, carefully inspect all components of the cantilever mechanism 14 to ensure that there is no damage or deformation and that all connectors are complete and intact. Use a measuring instrument (such as a total station or level) to measure the horizontal sides of the main beam mechanism 12 to determine the installation position and elevation of the cantilever mechanism 14, ensuring that the installation positions on both sides are symmetrical and the elevations are consistent. Install connecting plates at both ends of the cantilever mechanism 14 for bolting to both sides of the main beam mechanism 12. The installation of the connecting plates should ensure that they are accurately positioned and fully fit the docking surface of the cantilever mechanism 14. Select appropriate lifting equipment (such as a crane) based on the weight and size of the cantilever mechanism 14. Ensure that the load-bearing capacity and operating accuracy of the lifting equipment meet the requirements. After the cantilever mechanism 14 is raised to the predetermined position of the main beam mechanism 12, it is slowly moved to both sides of the main beam mechanism 12 for precise alignment. After the alignment is completed, use high-strength bolts to bolt the connecting plates of the cantilever mechanism 14 to the connection points of the main beam mechanism 12. When bolting, ensure that the bolts are arranged neatly and spaced evenly, and use a torque wrench to check the tightening torque of the bolts one by one to ensure that it reaches the torque value required by the design. Finally, use a measuring instrument to check the alignment of the cantilever mechanism 14 to ensure that its position is accurate. If there is any deviation, make adjustments in time. Check the bolting of all bolts to ensure that there is no looseness or omission, and tighten them if necessary. Check the stability of the cantilever mechanism 14 to ensure that its connection with the main beam mechanism 12 is firm and reliable, without shaking or tilting.

[0061] like Figure 7 and Figure 8 As shown, according to a method for installing a mobile formwork bridge-building machine of the present invention, the formwork assembly includes a side formwork 151 fixedly arranged inside the external hanging mechanism 15, a bottom formwork 152 for sealing the bottom, and an end formwork for sealing the end surface. The steps of hoisting the external hanging mechanism 15 onto the cantilever beam mechanism 14 include: Step 181. Set up an electric hoist mechanism 16 of at least 3 tons below the main beam mechanism 12. Specifically, in order to facilitate the lifting of the bottom mold 152 and the end mold, it is necessary to set up an electric hoist mechanism 16 of at least 3 tons below the main beam mechanism 12. Select a suitable installation location to ensure that the electric hoist mechanism 16 can cover the entire working area inside the external mechanism 15. When installing the electric hoist mechanism 16, ensure that it is firmly fixed, runs smoothly, and has no safety hazards. High-strength lifting slings can be used to fix the electric hoist mechanism 16 to a predetermined position on the main beam mechanism 12 to ensure that it can withstand the load during the lifting process.

[0062] Step 182: Use the electric hoist mechanism 16 to hoist the bottom mold 152 and end mold inside the external hanger 15. Specifically, the electric hoist mechanism 16 is used to hoist the bottom mold 152 and end mold. First, the bottom mold 152 and end mold are transported to the installation site and preliminarily assembled according to the design requirements. Then, the hooks of the electric hoist mechanism 16 are used to hoist the bottom mold 152 and end mold separately, aligning them to the predetermined positions inside the external hanger 15 for precise alignment.

[0063] Step 183: Tie the bottom formwork 152 and the end formwork with steel bars. To ensure the stability and tightness of the bottom formwork 152 and the end formwork during concrete pouring, tie the steel bars. After tying the steel bars, the inner formwork for beam pouring can be installed using an electric hoist.

[0064] Furthermore, the installation method of a mobile formwork bridge-building machine according to the present invention preferably further includes: Step 190: Install a safety cage on the side of pier 10 at the construction site. The cage consists of a base, a bottom platform, bottom uprights, a second platform, stairs, handrails, a safety net, and a safety door. Install the cage floor by floor to the preset working height, installing wall ties every 3 to 6 meters. Specifically, first, select a flat and stable location to install the base and secure it to the ground using expansion bolts. Then, place and secure the bottom platform on the base, ensuring it is level and stable. Next, install the bottom uprights at the four corners of the bottom platform, ensuring they are vertical and stable, and secure them to the bottom platform using connectors. Then, place the second platform at the predetermined location on the bottom uprights and secure them with high-strength bolts. Install stairs between the bottom and second platforms, and install handrails on both sides, ensuring they are sloped and stable. Install safety nets around the cage, ensuring the density and height meet safety requirements. Install a safety door at the entrance, ensuring it closes and locks securely. Follow these steps to install the cage floor by floor until the preset working height is reached. After each floor is installed, an inspection is conducted to ensure that all components are securely installed and there are no safety hazards. Finally, wall ties are installed on the vertical poles of the safety cage every 3 to 6 meters. These ties are used to secure the vertical poles to the bridge pier 10 or other stable structure to ensure the overall stability of the safety cage. These steps ensure the installation quality and safety of the safety cage, providing construction workers with safe and reliable access and working platforms, effectively reducing safety risks during construction and improving construction efficiency and safety.

[0065] Optimally, the specific installation process for a safety ladder cage is as follows: Place the base according to the designed dimensions on compacted, level ground and inspect its installation dimensions and diagonals for compliance. Secure the base with pre-buried M16 anchor bolts or expansion bolts of equivalent strength. Install the cage's lower platform onto the foundation and secure it to the base with the corresponding bolts. All four base bolts must be pre-threaded, and after adjusting the level of the lower base, tighten all the fastening bolts. Insert each set of four long bottom uprights into the platform's risers in the correct hole orientation. All bottom uprights and the ends with retaining collars must face upward. Pre-thread the corresponding fastening bolts, adjust the verticality of each upright, and then tighten the bolts. Ensure the verticality of the uprights is within 1‰ during installation. Slide the second-level platform onto the top of the four bottom uprights, adjust the position, pre-thread the corresponding fastening bolts, adjust the level of the second-level platform, and tighten the bolts. Install the stairs between the upper and lower platforms, ensuring the holes are aligned correctly. Secure the stairs to the upper and lower platforms with the corresponding bolts. Install the handrail on the inside of the stairs, aligning the holes and securing them with the corresponding bolts. Install the safety net on the back and sides of the ground floor and secure them with bolts. Install the safety door at the entrance of the ladder cage and secure them with the corresponding bolts. Insert the uprights from below into the platform's risers, following the correct hole orientation. Ensure the end of the upright with the retaining clamp faces upward and pre-install the corresponding fastening bolts. Install the safety net on all four sides of the platform, pre-installing the bolts at the top of the net. Lift the hoisting structure to the second-level platform for installation. Insert the four uprights into the platform's risers, pre-installing the corresponding fastening bolts. Adjust each upright to the desired verticality and secure them with the bolts. Ensure the verticality of the uprights is within 1‰ during installation. Install the stairs and handrail on the second level and secure them with the corresponding bolts. Raise the safety cage floor by floor, raising it to the desired working height. Starting from the second floor, safety nets need to be installed on all sides, and wall ties need to be installed every 3 to 6 meters.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for installing a mobile formwork bridge-building machine, characterized in that: The mobile formwork bridge-building machine comprises a leg mechanism (11), a main beam mechanism (12), a guide beam mechanism (13), a cantilever beam mechanism (14), and an external hanging mechanism (15); The installation method includes: Transport the various components of the mobile formwork bridge-building machine to the installation site; Installing the support leg mechanism (11) on the bridge pier (10); Assembling the segments of the main beam mechanism (12) into a whole; Hoisting the main beam mechanism (12) onto the support leg mechanism (11) and placing it in position; Assembling the various segments of the guide beam mechanism (13) into a whole; The guide beam mechanism (13) is hoisted and connected to the front end of the main beam mechanism (12); The cantilever beam mechanism (14) is symmetrically hoisted to both sides of the main beam mechanism (12); The external hanging mechanism (15) is hoisted onto the cantilever beam mechanism (14), and a template assembly for pouring a bridge is provided on the inner side of the external hanging mechanism (15).

2. The installation method of the mobile formwork bridge-building machine according to claim 1, characterized in that: The step of installing the leg mechanism (11) includes: Multiple rows of steel pipes with diameters of 630×8 mm and 530×7 mm are arranged based on the bridge pier (10) to form a steel pipe bracket for supporting the main middle support leg; 5I40b I-beam load-bearing beams are arranged transversely between the multiple rows of steel pipes; The steel pipe bracket is fixed to the pier body of the bridge pier (10) using a wall attachment hoop.

3. The installation method of the mobile formwork bridge-building machine according to claim 1, characterized in that: The step of hoisting the main beam mechanism (12) onto the support leg mechanism (11) and placing the main beam mechanism (12) in position comprises: Two 450-ton truck cranes are used to respectively lift the two ends of the main beam mechanism (12) at corresponding lifting positions, so as to lift the main beam mechanism (12) to the pier top support legs in place.

4. The installation method of the mobile formwork bridge-building machine according to claim 3, characterized in that: The main beam mechanism (12) includes a longitudinal steel box beam (121) and a transverse beam (122); The step of assembling the segments of the main beam mechanism (12) into a whole comprises: Assembling the longitudinal steel box beams (121) of the plurality of sections into a whole, and measuring the elevations of the longitudinal steel box beams (121) of the respective sections to ensure consistency; The transverse link (122) is assembled between the longitudinal steel box beams (121) on both sides that are symmetrical.

5. The installation method of the mobile formwork bridge-building machine according to claim 4, characterized in that: The step of assembling the longitudinal steel box beam (121) of the plurality of segments into a whole further comprises: Installing a node plate between the adjacent longitudinal steel box girders (121) by high-strength bolts to fix adjacent sections of the longitudinal steel box girders (121); After the assembly is completed, the gusset plate is tightened and checked, and the tightening check includes checking the tightening torque of the bolts one by one using a torque wrench.

6. The installation method of the mobile formwork bridge-building machine according to claim 4, characterized in that: The guide beam mechanism (13) comprises a guide beam body and a connecting beam; The step of hoisting and connecting the guide beam mechanism (13) to the front end of the main beam mechanism (12) includes: Using two 80-ton truck cranes to respectively lift the two ends of the guide beam body at corresponding lifting positions, so as to assemble the guide beam body to the end of the longitudinal steel box beam (121); After the hoisting is completed, a connecting beam is assembled between the two parallel guide beam bodies.

7. The installation method of the mobile formwork bridge-building machine according to claim 6, characterized in that: The step of assembling the segments of the guide beam mechanism (13) into a whole comprises: Assembling the guide beam mechanism (13) of multiple segments into a whole; Before hoisting, a connecting plate is installed at the joint end of the guide beam mechanism (13) to assemble the guide beam mechanism (13) to the front end of the main beam mechanism (12) in the air.

8. The method for installing a mobile formwork bridge-building machine according to any one of claims 1 to 7, characterized in that: The step of symmetrically hoisting the cantilever beam mechanism (14) to both sides of the main beam mechanism (12) includes: The cantilever beam mechanism (14) is symmetrically assembled to the horizontal sides of the main beam mechanism (12) and bolted.

9. The method for installing a mobile formwork bridge-building machine according to any one of claims 1 to 7, characterized in that: The template assembly comprises a side mold (151) fixedly arranged on the inner side of the external hanging mechanism (15), a bottom mold (152) for sealing the bottom, and an end mold for closing the end surface; The step of hoisting the external hanging mechanism (15) onto the cantilevering beam mechanism (14) includes: A 3-ton electric hoist mechanism (16) is provided below the main beam mechanism (12); Using the electric hoist mechanism (16) to hoist the bottom mold (152) and the end mold on the inner side of the external hanging mechanism (15); The bottom form (152) and the end form are bundled with steel bars.

10. The method for installing a mobile formwork bridge-building machine according to any one of claims 1 to 7, characterized in that: Also includes: A safety ladder cage is provided on the side of the bridge pier (10) at the construction site, wherein the safety ladder cage includes a base, a bottom platform, a bottom upright, a second platform, stairs, a stair handrail, a safety net and a safety door; The safety ladder cage is installed layer by layer to a preset working height, and wall connecting pieces are installed every 3 to 6 meters.

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