Subway station arc-shaped top plate structure movable formwork trolley and using method thereof

Abstract

The invention relates to the technical field of movable formwork trolley equipment, and particularly discloses a subway station arc-shaped top plate structure movable formwork trolley and a using method thereof. The main beam is arranged in the construction direction of the subway station; the plurality of gantries are arranged on the main beam at equal intervals in the construction direction of the subway station; the left steel frame and the right steel frame are telescopically arranged on the left side and the right side of the table top respectively; the multiple first hydraulic cylinders and the multiple second hydraulic cylinders are arranged to control jacking of the top formwork and the side formworks to form the whole formwork, displacement of the top formwork and the side formworks is monitored through the displacement sensors in the construction process, the design requirement is met, and the whole construction condition is monitored through the laser scanners. The multiple first hydraulic cylinders and the multiple second hydraulic cylinders are used for multi-point supporting, the large-span column-free arc-shaped top plate supporting device adapts to the construction environment of the large-span column-free arc-shaped top plate of the subway station, the multiple first hydraulic cylinders and the multiple second hydraulic cylinders can be independently adjusted, and the adaptability to arc-shaped top plates with different radians and curvatures is better.

Description

Technical Field

[0001] This invention relates to the field of mobile formwork trolley equipment technology, specifically to a mobile formwork trolley for arc-shaped roof slab structures in subway stations and its usage method. Background Technology

[0002] With the development of rail transit and the continuous improvement of living standards, people's demands for public transportation facilities have moved beyond simple functionality. They now seek stylistic and artistic designs, leading to the emergence of subway stations that transcend traditional forms. Arched subway stations, with their spacious, airy, simple, and stylish interiors, are highly regarded. However, their large-scale adoption is hampered by their complex structure and stress distribution, high construction difficulty, and stringent requirements. Formwork trolleys, with their high rigidity, good integrity, safety, efficiency, high degree of mechanization, and low manual labor requirements, are already widely used in tunnel engineering. However, due to the large spans and complex structures of subway stations, their versatility in subway station applications is limited, resulting in their less frequent use.

[0003] Existing mobile formwork trolleys are typically suitable for small-section tunnel construction. However, in the construction of large-section tunnels or subway station arch structures, it is often necessary to add central column supports. This not only increases the complexity and cost of the structure but also limits construction space and efficiency. Furthermore, when using whole-section formwork, the processing precision requirements are extremely high. Any local errors will accumulate and amplify in long-span construction, resulting in poor matching accuracy between the formwork and the design shape. Ultimately, this affects the linear deviation of the concrete structure and seriously impacts the project quality.

[0004] With the expansion of urban rail transit networks, different subway lines, and even different stations on the same line, generally adopt roof slab structures with varying curvatures and arcs due to differences in functional positioning, spatial aesthetics, and surrounding environmental conditions. This personalization and diversification of architectural design, while enhancing the artistic appeal of public transportation spaces, also poses a significant challenge to the adaptability of construction equipment. Traditional mobile formwork trolleys are typically "tailor-made" for the specific roof slab shape and span of a particular station. Once manufactured, their formwork systems and support structures are difficult to adjust, resulting in a fixed structural form and specific dimensions. Therefore, a trolley designed and manufactured for station A is often unsuitable for the drastically different arch shape and span requirements of station B. This leads to resource waste and significantly increases construction costs.

[0005] In the construction of the curved roof slab concrete of long-span subway stations, the control of load changes and formwork deformation is particularly critical due to the large span and volume of concrete poured. During concrete pouring, vibration, and setting, continuously changing loads cause complex construction disturbances to the formwork system. If the overall shape and design contour of the formwork cannot be precisely maintained during dynamic construction, relative displacement between adjacent formwork sections can easily occur, resulting in a noticeable "misalignment." This forming defect not only seriously affects the appearance quality of the concrete structure but also weakens its integrity, potentially creating stress concentration points at joints and impacting the long-term durability and safety performance of the structure. Summary of the Invention

[0006] The purpose of this invention is to provide a movable template trolley for the arc-shaped roof structure of a subway station and its usage method, which solves the problems of poor support in the absence of arch columns in subway stations and the inability of a single template to meet the support requirements of arc-shaped roofs with different curvatures.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a moving template trolley for the arc-shaped roof structure of a subway station, including a main beam, a first hydraulic cylinder, a second hydraulic cylinder, a laser scanner, multiple gantry frames and multiple displacement sensors; The main beam is set along the construction direction of the subway station; both ends of the main beam are equipped with moving wheels via lifting hydraulic cylinders; multiple gantry frames are set at equal intervals on the main beam along the construction direction of the subway station; the gantry frame includes a platform, columns, a left steel frame and a right steel frame; multiple columns are provided, arranged parallel to each other below the platform, and the bottom of the columns is equipped with support plates; the left steel frame and the right steel frame are telescopically set on the left and right sides of the platform, respectively; Multiple first hydraulic cylinders are provided and are evenly spaced on the platform; the piston rod of the first hydraulic cylinder is used to connect to the top mold; Multiple second hydraulic cylinders are provided, respectively installed on the left and right steel frames; the piston rod of the second hydraulic cylinder is arranged laterally to connect to the side mold.

[0008] As a further technical solution to the above scheme, the platform is also provided with a crossbeam, a longitudinal beam, and a guardrail; the bottom of the longitudinal beam is fixedly connected to the platform, and the top is provided with a transverse hydraulic cylinder. The piston rod of the transverse hydraulic cylinder is connected to the crossbeam to drive the crossbeam to move laterally; the guardrail is set at the edge of the platform to prevent workers from falling off the platform; the top of the crossbeam is provided with a sliding groove, and the two sides of the sliding groove are recessed inward to form a limiting groove; the bottom of the first hydraulic cylinder is provided with a movable support, and the two sides of the movable support are provided with limiting blocks that match the limiting groove. The first hydraulic cylinder slides in the sliding groove through the movable support to adjust its position and facilitate the adjustment of the position of the top mold.

[0009] As a further technical solution to the above scheme, the connection point between the top mold and the side mold is provided with a support, and the support is provided with a connection hole, which is fixed by inserting a connecting pin into the connection hole.

[0010] As a further technical solution of the above scheme, one end of the top mold and the side mold are provided with a socket, and the other end is provided with a plug; the adjacent top mold is fixed in the socket connected to the plug for inserting the plug into the adjacent top mold, and the adjacent side mold is fixed in the socket connected to the plug for inserting the plug into the adjacent side mold.

[0011] As a further technical solution to the above scheme, it also includes a screw rod with one end fixed to the ground and the other end detachably connected to the column.

[0012] As a further technical solution to the above scheme, rubber gaskets are provided at the connection between the first hydraulic cylinder and the top mold, and at the connection between the second hydraulic cylinder and the side mold.

[0013] The method for using a mobile formwork trolley for the curved roof structure of a subway station, including the laser scanner and displacement sensor used with the mobile formwork trolley, includes the following steps: Step S1: Move the template trolley of this device to the construction location of the subway station, turn on the laser scanner to monitor the working conditions of the construction site, and place the moving wheels in place along the pre-laid rails. Step S2: Activate the lifting hydraulic cylinder to raise the gantry until the designed distance is reached and then stop. Adjust the centerline of the top formwork to align with the centerline of the subway station. Step S3: Extend the left and right steel frames and adjust them to the appropriate length according to the construction site conditions. Then lock the left and right steel frames and install the first and second hydraulic cylinders. Step S4: Operate the first and second hydraulic cylinders to independently adjust the lifting height of each first and second hydraulic cylinder according to the size and curvature of the subway station arch, so that the combination of multiple top molds and side molds can adapt to the arch of the subway station. Step S5: Based on the displacement sensors on the top mold and side mold recording the template deviation, adjust the jacking direction and jacking force of the first hydraulic cylinder and the second hydraulic cylinder. After multiple top molds and side molds fit the shape of the arch, lock the first hydraulic cylinder and the second hydraulic cylinder. Step S6: Activate the lifting hydraulic cylinder to lift the top mold and side molds upwards, so that the top mold and side molds reach the designed distance. Use sealing strips to seal around the top mold and side molds and between multiple top molds and side molds to prevent grout leakage during pouring. Step S7: Pour concrete mortar into the top and side mold cavities. After pouring, turn on the vibrator for 10-15 seconds. Then, cure the concrete according to the usual requirements until the strength of the poured body reaches more than 80% of the design value. Only then can the formwork be removed and the trolley be moved to the next work station to repeat the above steps.

[0014] Compared with existing technologies, this invention has the following advantages and beneficial effects: In this invention, multiple first and second hydraulic cylinders are used to control the lifting of the top and side molds respectively, forming an integral template. During construction, displacement sensors monitor the displacement of the top and side molds to meet design requirements, and a laser scanner monitors the overall construction progress. Using multiple first and second hydraulic cylinders for multi-point support allows for adaptation to the construction environment of large-span, column-free curved roof slabs in subway stations. Furthermore, the multiple first and second hydraulic cylinders can be adjusted individually, providing better adaptability to curved roof slabs with different curvatures and arcs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of this device.

[0016] Figure 2 This is a side view of the device.

[0017] Figure 3 This is a top view schematic diagram of the top mold and the first hydraulic cylinder.

[0018] Figure 4 This is a schematic diagram of the longitudinal section connection between the top mold and the first hydraulic cylinder.

[0019] Figure 5 This is a schematic diagram showing the connection between the top mold and the side mold.

[0020] Figure 6 This is a schematic diagram showing the connection between adjacent top molds.

[0021] Figure 7 This is a schematic diagram showing the position of the rubber gasket.

[0022] The meanings of the labels in the diagram are as follows: General beam-1; Frame-2; Platform-201; Column-202; Left steel frame-203; Right steel frame-204; Horizontal beam-205; Longitudinal beam-206; Guardrail-207; Sliding groove-208; Limiting groove-209; Top mold-3; Support-301; Connecting hole-302; Insertion hole-303; Insertion block-304; Side mold-4; First hydraulic cylinder-5; movable support-501; limit block-502; Second hydraulic cylinder - 6; Laser Scanner-7; Displacement sensor-8; Lifting hydraulic cylinder-9; Movement wheel -10; Lateral hydraulic cylinder-11; Screw brace - 12; Rubber gasket-13. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, so as to provide a better understanding of the concept of the present invention, the technical problem solved, the technical features constituting the technical solution, and the technical effects brought about.

[0024] like Figures 1-7 As shown, the moving template trolley for the arc-shaped roof structure of the subway station includes a main beam 1, a first hydraulic cylinder 5, a second hydraulic cylinder 6, a laser scanner 7, multiple gantry frames 2, and multiple displacement sensors 8. The main beam 1 is set along the construction direction of the subway station; both ends of the main beam 1 are equipped with moving wheels 10 via lifting hydraulic cylinders 9; multiple gantry frames 2 are set at equal intervals on the main beam 1 along the construction direction of the subway station; the gantry frame 2 includes a platform 201, columns 202, a left steel frame 203 and a right steel frame 204; multiple columns 202 are provided and are set parallel to each other below the platform 201, and the bottom of the columns 202 is provided with a support plate; the left steel frame 203 and the right steel frame 204 are respectively telescopically set on the left and right sides of the platform 201; Multiple first hydraulic cylinders 5 are provided and are equally spaced on the platform 201; the piston rod of the first hydraulic cylinder 5 is used to connect upward to the top mold 3; Multiple second hydraulic cylinders 6 are provided, respectively installed on the left steel frame 203 and the right steel frame 204; the piston rod of the second hydraulic cylinder 6 is arranged laterally to connect to the side mold 4.

[0025] In this device, the main beam 1 and the gantry 2 are first installed along the construction direction of the subway station. At both ends of the main beam 1, movable wheels 10 are set up by lifting hydraulic cylinders 9. During construction, the movable wheels 10 can be retracted upward by lifting hydraulic cylinders 9 for other construction purposes, which facilitates the stability of the device. A platform 201 is set up on the gantry 2 as a working platform for construction personnel, and the column 202 serves as a downward support. It can also be connected to the construction ground by a support plate. After the lower support is adjusted, the top mold 3 and side mold 4 are installed. During the installation of the top mold 3, the first hydraulic cylinder 5 is first installed on the platform 201. The top mold 3 is then placed on the piston rod of the first hydraulic cylinder 5. The position of the top mold 3 is adjusted by the first hydraulic cylinder 5, aligning the positions of multiple top molds 3 to form an integral top mold structure. Multiple first hydraulic cylinders 5 can achieve multi-section support for the top mold 3, which is convenient for use in the construction of subway trolleys for large-span non-arc roof structures. Furthermore, the first hydraulic cylinders 5 can be adjusted to different heights for different subway stations to adapt to different construction environments. A left steel frame 203 and a right steel frame 204 are set on both sides. The left steel frame 203 and the right steel frame 204 are designed with telescopic extension. The top mold 3 is placed on both sides of the platform 201 and locked by bolts or other locking structures. It retracts into the gantry 2 when the trolley moves and extends out to both sides of the platform 201 when needed. Second hydraulic cylinders 6 are respectively set on both sides of the left steel frame 203 and the right steel frame 204. The side molds 4 are set by the second hydraulic cylinders 6. The position of the side molds 4 is adjusted by the piston rod of the second hydraulic cylinder 6. The side molds 4 are supported on both sides of the top mold 3 and the multiple side molds 4 are connected to form an integral template of the top mold 3 and the side molds 4. During the construction of different subway stations, the curvature can be adjusted by replacing the top mold 3 and the side molds 4. It can also be driven by the first hydraulic cylinder 5 and the second hydraulic cylinder 6 to achieve the effect of adapting to different subway stations.

[0026] like Figure 3 and Figure 4As shown in a preferred embodiment, the platform 201 is further provided with a crossbeam 205, a longitudinal beam 206, and a guardrail 207; the bottom of the longitudinal beam 206 is fixedly connected to the platform 201, and the top is provided with a transverse hydraulic cylinder 11. The piston rod of the transverse hydraulic cylinder 11 is connected to the crossbeam 205 to drive the crossbeam 205 to move laterally; the guardrail 207 is set at the edge of the platform 201 to prevent workers from falling off the platform 201; the top of the crossbeam 205 is provided with a sliding groove 208, and the two sides of the sliding groove 208 are recessed inward to form a limiting groove 209; the bottom of the first hydraulic cylinder 5 is provided with a movable support 501, and the two sides of the movable support 501 are provided with limiting blocks 502 that match the limiting groove 209. The first hydraulic cylinder 5 slides in the sliding groove 208 through the movable support 501 to adjust its position, which facilitates the adjustment of the position of the top mold 3. In this embodiment, a crossbeam 205, a longitudinal beam 206, and a guardrail 207 are provided on the platform 201 as the upper installation and protection structure. During installation, the longitudinal beam 206 is vertically fixed on the platform 201. The crossbeam 205 is set by the horizontal moving hydraulic cylinder 11, so that the crossbeam 205 can move in the horizontal direction. The first hydraulic cylinder 5 is connected to the crossbeam 205 through the movable support 501 and slides in the sliding groove 208 of the crossbeam 205. The limiting blocks 502 on both sides of the movable support 501 are inserted into the limiting groove 209 to limit the movement, ensuring stability during the sliding process. By adjusting the position of the crossbeam 205 through sliding, the positions of the first hydraulic cylinder 5 and the top mold 3 are adjusted, so that the top mold 3 fits with the center line of the subway station.

[0027] like Figure 5 As shown, in a preferred embodiment, the connection point between the top mold 3 and the side mold 4 is provided with a support 301, and the support 301 is provided with a connecting hole 302. A connecting pin is inserted into the connecting hole 302 for fixing. In this embodiment, when connecting the top mold 3 and the side mold 4, a support 301 is provided at the connection point of the top mold 3 and the side mold 4 as a connection base. The support 301 is provided with a connecting hole 302. After the two connecting holes 302 overlap, a connecting pin is inserted into the connecting hole 302 for locking.

[0028] like Figure 6 As shown, in a preferred embodiment, each of the top mold 3 and side mold 4 has an insertion hole 303 at one end and an insertion block 304 at the other end. Adjacent top molds 3 are fixed by connecting and inserting the insertion block 304 into the insertion hole 303 of the adjacent top mold 3, and adjacent side molds 4 are fixed by connecting and inserting the insertion block 304 into the insertion hole 303 of the adjacent side mold 4. In this embodiment, multiple top molds 3 and side molds 4 are provided. When connecting the top molds 3 and side molds internally, a mortise and tenon joint is used. Insertion holes 303 and insertion blocks 304 are provided at both ends of the top mold 3 and side mold 4, and the insertion blocks 304 are inserted into the insertion holes 303 for installation and fixation.

[0029] like Figure 2 As shown, in a preferred embodiment, it also includes a lead screw diagonal brace 12, one end of which is fixed to the ground, and the other end is detachably connected to the column 202. In this embodiment, to increase the stability of the support, the lead screw diagonal brace 12 is added, and the support is fixed by adjusting the lead screw diagonal brace 12.

[0030] like Figure 7 As shown, in a preferred embodiment, rubber gaskets 13 are provided at the connection between the first hydraulic cylinder 5 and the top mold 3, and at the connection between the second hydraulic cylinder 6 and the side mold 4. In this embodiment, the rubber gaskets 13 allow the pushing force of the first hydraulic cylinder 5 and the second hydraulic cylinder 6 to be transmitted more evenly to the top mold 3 and the side mold 4.

[0031] The method for using a movable formwork trolley for the curved roof structure of a subway station, including a laser scanner 7 and a displacement sensor 8 used in conjunction with the movable formwork trolley, includes the following steps: Step S1: Move the template trolley of this device to the construction location of the subway station, turn on the laser scanner 7 to monitor the working conditions of the construction site, and place the moving wheels 10 in place along the pre-laid rails. Step S2: Activate the lifting hydraulic cylinder 9 to raise the gantry 2 and stop when it reaches the designed distance. Adjust the centerline of the top mold 3 to align with the centerline of the subway station. Step S3: Extend the left steel frame 203 and the right steel frame 204, adjust them to a suitable length according to the construction site conditions, then lock the left steel frame 203 and the right steel frame 204, and install the first hydraulic cylinder 5 and the second hydraulic cylinder 6. Step S4: Operate the first hydraulic cylinder 5 and the second hydraulic cylinder 6. Adjust the lifting height of each first hydraulic cylinder 5 and the second hydraulic cylinder 6 independently according to the size and curvature of the subway station arch, so that the combination of multiple top molds 3 and side molds 4 can adapt to the arch of the subway station. Step S5: Based on the template deviation recorded by the displacement sensor 8 on the top mold 3 and the side mold 4, adjust the pushing direction and pushing force of the first hydraulic cylinder 5 and the second hydraulic cylinder 6. After the multiple top molds 3 and the side molds 4 fit the shape of the arch, lock the first hydraulic cylinder 5 and the second hydraulic cylinder 6. Step S6: Activate the lifting hydraulic cylinder 9 to lift the top mold 3 and side mold 4, so that the top mold 3 and side mold 4 reach the designed distance. Use sealing strips to seal the periphery of the top mold 3 and side mold 4 and between multiple top molds 3 and side molds 4 to prevent grout leakage during pouring. Step S7: Pour concrete mortar into the top mold 3 and side mold 4 cavities. After pouring, turn on the vibrator for 10-15 seconds. Then, cure according to the conventional requirements for concrete until the strength of the poured body reaches more than 80% of the design value. Only then can the formwork be removed and the trolley be moved to the next work station to repeat the above steps.

[0032] When using this device, firstly, turn on the laser scanner 7 to monitor the overall construction progress. Place the moving wheels 10 on the rails so that the device can move along the direction of the rails, facilitating relocation after construction. During construction, the lifting hydraulic cylinder 9 raises the gantry 2 to the construction position. The position of the top mold 3 is aligned with the centerline of the subway station to ensure even force distribution. After adjustment, operate the first hydraulic cylinder 5 and the second hydraulic cylinder 6 to adjust the position of the top mold 3 and the side mold 4. Connect multiple top molds 3 and side molds 4 to fit the size and curvature of the subway station arch. Adjustments are made based on the records of the displacement sensor 8. Each first hydraulic cylinder 5 and second hydraulic cylinder 6 can be adjusted independently, achieving multi-section support while allowing for more precise adjustments. After adjustment, lock the first hydraulic cylinder 5 and the second hydraulic cylinder 6 to fix the overall shape of the top mold 3 and the side mold 4. At this point, according to the design elevation, open the lifting hydraulic cylinder 9 again to adjust and raise the overall device to the pouring area. Use sealing strips to seal the top mold 3 and the side mold 4 before proceeding with the pouring operation. During pouring, a vibrator is used to assist in improving the pouring effect. After pouring, curing is carried out according to conventional methods. Once the pouring strength has been achieved, the formwork is removed and the next operation can proceed.

[0033] In the above process, the displacement of the first hydraulic cylinder 5 and the second hydraulic cylinder 6 is monitored by displacement sensor 8, thereby determining the positions of the top mold 3 and the side mold 4. The specific process is as follows: The positive X-axis is defined as the horizontal direction from left to right, and the positive Z-axis is defined as the vertical direction from bottom to top, with the intersection of the X and Z axes as the origin. Assume the actual position of the top formwork (i.e., the integral formwork composed of top formwork 3 and side formwork 4) is (X1, Z1), the designed position of the top formwork is (X0, Z0), the deviation between the actual and designed positions of the top formwork is (ΔX, ΔZ), and the maximum allowable displacement of the top formwork is (Xmax, Zmax), which depends on different construction conditions and standards. During the actual pouring of the top formwork, the top formwork will inevitably experience displacement deformation due to various reasons (such as concrete vibration and external forces from the top formwork hydraulic cylinder). Excessive deformation will affect the quality of the concrete pouring. In this case, it is necessary to adjust the top formwork direction and thrust of the top formwork hydraulic cylinder to reduce or counteract the displacement of the top formwork. This device monitors the displacement deformation of the top formwork in real time by installing displacement sensors on the sides of each section of the top formwork. The specific implementation method is as follows: When the actual deviation value (ΔX, ΔZ) is less than the maximum allowable value (Xmax, Zmax), the top mold direction and jacking force of each top mold hydraulic cylinder remain unchanged, and other processes such as pouring continue to be completed; when the actual deviation value (ΔX, ΔZ) is equal to the maximum allowable value (Xmax, Zmax), in order to ensure the quality of concrete pouring, it is necessary to appropriately adjust the top mold direction and jacking force of the top mold hydraulic cylinder to slightly reduce the deviation value; when the actual deviation value (ΔX, ΔZ) is greater than the maximum allowable value (Xmax, Zmax), the time deviation value has seriously affected the quality of the top mold, so it is necessary to make a large adjustment to the top mold direction and jacking force of the top mold hydraulic cylinder until the actual deviation value (ΔX, ΔZ) is less than the maximum allowable value (Xmax, Zmax).

[0034] During the actual movement of the mobile formwork trolley, if a sudden accident occurs at the construction site, failure to respond promptly will affect the efficiency of construction. This device monitors the entire construction section in real time by installing a laser cross-section scanner on the platform 201. This allows construction personnel to monitor the operation of the mobile formwork trolley and the real-time situation inside the construction subway station from the monitoring room. When changes occur in the construction section or a sudden accident occurs, the mobile formwork trolley can respond promptly by cutting off the power and stopping its movement, ensuring the safety of the trolley and construction personnel.

[0035] The terms "connection" and "fixing" appearing in the description of this invention can refer to fixed connection, processing and forming, welding, or mechanical connection. The specific meaning of the above terms in this invention should be understood according to the specific circumstances.

[0036] In the description of this invention, the terms "center," "upper," "lower," "horizontal," "inner," and "outer," etc., are used only to indicate the orientation or positional relationship for the convenience of describing this invention and to simplify the description, and do not indicate or imply a specific orientation that the device or element referred to must have, and therefore should not be construed as a limitation of this invention.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A movable template trolley for the arc-shaped roof structure of a subway station, characterized in that: It includes a main beam (1), a first hydraulic cylinder (5), a second hydraulic cylinder (6), a laser scanner (7), multiple gantry frames (2) and multiple displacement sensors (8); The main beam (1) is set along the construction direction of the subway station; the two ends of the main beam (1) are equipped with moving wheels (10) through the lifting hydraulic cylinder (9); multiple gantry frames (2) are set at equal intervals on the main beam (1) along the construction direction of the subway station; the gantry frame (2) includes a platform (201), a column (202), a left steel frame (203) and a right steel frame (204); multiple columns (202) are set in parallel below the platform (201), and a support plate is set at the bottom of the column (202); the left steel frame (203) and the right steel frame (204) are respectively telescopically set on the left and right sides of the platform (201); Multiple first hydraulic cylinders (5) are provided and are equally spaced on the platform (201); The piston rod of the first hydraulic cylinder (5) is used to connect to the top mold (3) by moving upwards. Multiple second hydraulic cylinders (6) are provided, respectively installed on the left steel frame (203) and the right steel frame (204); The piston rod of the second hydraulic cylinder (6) is arranged laterally for connection to the side mold (4).

2. The movable template trolley for the arc-shaped roof structure of a subway station as described in claim 1, characterized in that: The platform (201) is also provided with a crossbeam (205), a longitudinal beam (206), and a guardrail (207); the bottom of the longitudinal beam (206) is fixedly connected to the platform (201), and the top is provided with a transverse hydraulic cylinder (11). The piston rod of the transverse hydraulic cylinder (11) is connected to the crossbeam (205) to drive the crossbeam (205) to move laterally; the guardrail (207) is set at the edge of the platform (201) to prevent workers from falling off the platform (201); the crossbeam The top of (205) is provided with a sliding groove (208), and the two sides of the sliding groove (208) are recessed inward to form a limiting groove (209); the bottom of the first hydraulic cylinder (5) is provided with a movable support (501), and the two sides of the movable support (501) are provided with limiting blocks (502) that match the limiting groove (209). The first hydraulic cylinder (5) slides in the sliding groove (208) through the movable support (501) to adjust its position and facilitate the adjustment of the position of the top mold (3).

3. The movable template trolley for the arc-shaped roof structure of a subway station as described in claim 1, characterized in that: The connection point between the top mold (3) and the side mold (4) is provided with a support (301), and the support (301) is provided with a connection hole (302). A connecting pin is inserted into the connection hole (302) for fixing.

4. The movable template trolley for the arc-shaped roof structure of a subway station as described in claim 1, characterized in that: The top mold (3) and the side mold (4) are each provided with a socket (303) at one end and a plug (304) at the other end; the adjacent top mold (3) is fixed in the socket (303) where the plug (304) is inserted into the adjacent top mold (3), and the adjacent side mold (4) is fixed in the socket (303) where the plug (304) is inserted into the adjacent side mold (4).

5. The movable template trolley for the arc-shaped roof structure of a subway station as described in claim 1, characterized in that: It also includes a threaded rod diagonal brace (12), one end of which is fixed to the ground and the other end is detachably connected to the column (202).

6. The movable template trolley for the arc-shaped roof structure of a subway station as described in claim 1, characterized in that: Rubber gaskets (13) are provided at the connection between the first hydraulic cylinder (5) and the top mold (3) and at the connection between the second hydraulic cylinder (6) and the side mold (4).

7. A method for using a mobile template trolley for the arc-shaped roof structure of a subway station, including a laser scanner (7) and a displacement sensor (8) used in conjunction with the mobile template trolley, characterized in that: Includes the following steps: Step S1: Move the template trolley of this device to the construction location of the subway station, turn on the laser scanner (7) to monitor the working conditions of the construction site, and place the moving wheels (10) in place along the pre-laid rails. Step S2: Activate the lifting hydraulic cylinder (9) to raise the gantry (2) until it reaches the designed distance and stops. Adjust the centerline of the top mold (3) to align with the centerline of the subway station. Step S3: Extend the left steel frame (203) and the right steel frame (204), adjust them to the appropriate length according to the construction site conditions, then lock the left steel frame (203) and the right steel frame (204), and install the first hydraulic cylinder (5) and the second hydraulic cylinder (6). Step S4: Operate the first hydraulic cylinder (5) and the second hydraulic cylinder (6) to independently adjust the lifting height of each first hydraulic cylinder (5) and the second hydraulic cylinder (6) according to the size and curvature of the subway station arch, so that the combination of multiple top molds (3) and side molds (4) can adapt to the arch of the subway station. Step S5: Based on the displacement sensor (8) on the top mold (3) and the side mold (4) recording the template deviation, adjust the pushing direction and pushing force of the first hydraulic cylinder (5) and the second hydraulic cylinder (6). After the multiple top molds (3) and the side molds (4) fit the shape of the arch, lock the first hydraulic cylinder (5) and the second hydraulic cylinder (6). Step S6: Activate the lifting hydraulic cylinder (9) to lift the top mold (3) and side mold (4) upwards, so that the top mold (3) and side mold (4) reach the designed distance. Use sealing strips to seal the periphery of the top mold (3) and side mold (4) and between multiple top molds (3) and side molds (4) to prevent grout leakage during pouring. Step S7: Pour concrete mortar into the cavity of the top mold (3) and the side mold (4). After pouring, turn on the vibrator for 10-15 seconds. Then, cure according to the conventional requirements of concrete until the strength of the poured body reaches more than 80% of the design value. Only then can the formwork be removed and the trolley be moved to the next work station to repeat the above steps.

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