Multifunctional post-cast strip formwork trolley structure of immersed tube tunnel

Abstract

The multifunctional post-cast strip formwork trolley structure comprises two formwork trolley bodies, a formwork connecting structure, a linear guide rail and an arc-shaped guide rail, the linear guide rail extends in the length direction of an immersed tube section, the arc-shaped guide rail is connected to the end of the linear guide rail, and the radian of the arc-shaped guide rail is consistent with that of an inflection point of the immersed tube tunnel. The formwork trolley body comprises a middle formwork, an upper side formwork, a lower side formwork, an inner supporting frame and the like and is provided with an adjusting driving piece and a jacking driving piece. The two formwork trolley bodies are arranged side by side along the linear guide rail to serve as an inner formwork trolley when an immersed tube section is poured, one formwork trolley body moves along the arc-shaped guide rail when an immersed tube tunnel inflection point post-pouring belt is poured, and the two formwork trolley bodies form an included angle gap and are connected through the formwork connecting structure to serve as a post-pouring belt inner formwork trolley. The formwork trolley has the technical effects that the formwork trolley can be universally used in the pouring construction of the immersed tube section and the tunnel inflection point post-pouring belt, the use efficiency and applicability of the formwork trolley are improved, the formwork is flexible to expand and contract, and the connection sealing effect is good.

Description

Technical Field

[0001] This application relates to the field of immersed tunnel construction, and in particular to a multifunctional post-pouring strip formwork trolley structure for immersed tunnels. Background Technology

[0002] Precast immersed tunnel technology, as a key transportation infrastructure solution for crossing rivers, straits, and other waterways, plays an increasingly important role in modern urban transportation networks. These tunnels can significantly shorten spatial and temporal distances and promote coordinated regional economic development. For example, the completion of the Chebei South Tunnel in Guangzhou reduced the river crossing time from 30 minutes to 2 minutes, greatly improving the interconnectivity between Guangzhou's Tianhe and Haizhu districts. In the precast construction of immersed tunnels, the application of internal formwork trolleys directly affects construction quality and efficiency. Traditionally, the internal formwork of immersed tunnel segments often uses integral formwork or layered casting processes, but these suffer from low formwork reuse rates and poor adaptability. To further improve construction efficiency, various hydraulic formwork trolleys have been developed, enabling integral concrete casting through adjustable formwork systems.

[0003] However, existing formwork trolleys exhibit significant limitations at critical junctures in immersed tunnels—especially when the post-cast strip is located on curved sections or at inflection points. On one hand, the rigid structure of traditional post-cast strip formwork trolleys struggles to adapt to the curvature changes in curved sections, resulting in inaccurate positioning. On the other hand, using loose formwork for post-cast strip construction presents problems such as numerous scattered components, cumbersome assembly and disassembly procedures, and long construction cycles, severely impacting the overall construction progress. Furthermore, existing trolleys often require multiple disassembly and adjustments within confined spaces, as indicated in patent document CN117386408A, which states that they are "affected by conditions such as limited space, insufficient water depth, and tensile stress during secondary casting of the tunnel sections," necessitating the design of a more adaptable formwork system.

[0004] Although existing technologies have developed retractable formwork trolley structures (such as the curve-walking mechanism proposed in CN218716837U), they still struggle to simultaneously meet the combined requirements of segmental casting on straight sections and post-cast strip casting on curves. Especially in the construction of post-cast strips at the inflection points of adjacent segments, achieving a smooth transition and seamless connection of the formwork system has become a pressing technical challenge for the industry. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a multifunctional post-cast strip formwork trolley structure for immersed tunnels.

[0006] The technical solution for the multifunctional post-cast strip formwork trolley structure for immersed tunnels provided in this application is as follows: A multifunctional formwork trolley structure for post-pouring strips in immersed tunnels includes two formwork trolley bodies, a formwork connecting structure, a linear guide rail, and an arc-shaped guide rail. The linear guide rail extends along the length of the immersed tunnel segment, and the arc-shaped guide rail connects to the end of the linear guide rail, with the arc of the arc-shaped guide rail matching the arc of the inflection point of the immersed tunnel. During the pouring of the immersed tunnel segment, the two formwork trolley bodies slide on the linear guide rail and are arranged side-by-side along the length of the segment, serving as the inner formwork trolley for the immersed tunnel segment. When pouring the post-pouring strip at the inflection point of the immersed tunnel, one of the formwork trolley bodies moves along the extension direction of the arc-shaped guide rail and lands at the post-pouring strip construction position. A certain angled installation gap is formed between the two formwork trolley bodies, and the installation gap is connected by the formwork connecting structure, serving as the inner formwork trolley for the post-pouring strip.

[0007] By adopting the above technical solution and utilizing the combined design of linear and curved guide rails, the main body of the formwork trolley can meet the pouring requirements of straight sections of the immersed tunnel segment, while also adapting to the post-pouring strip construction requirements at tunnel bends through the curved guide rails, achieving a dual-purpose function. The two main bodies of the formwork trolleys can operate side-by-side on straight sections to improve efficiency, and on curved sections, the separate positioning and formwork connection structure can create a pouring space with an appropriate angle, effectively solving the industry problem that traditional trolleys cannot adapt to the construction of curved post-pouring strips.

[0008] Preferably, the template trolley body includes a middle template, two upper templates, two lower templates, and an inner support frame. The middle template is positioned above the inner support frame. The two upper templates are hinged to both sides of the middle template. The two lower templates correspond one-to-one with the two upper templates. The end of each upper template furthest from the inner support frame is hinged to the corresponding lower template. The inner support frame is equipped with a first adjustment drive for driving the upper templates to unfold or retract. The inner support frame is equipped with a second adjustment drive for driving the lower templates to unfold or retract. A lifting drive is provided at the bottom of the inner support frame. The lifting drive forces the inner support frame and the middle template to move upward by lifting downward and forces the inner support frame and the middle template to move downward by retracting. When performing pipe segment pouring or post-pouring strip pouring, the upper templates, lower templates, and middle templates of the two template trolley bodies unfold and take place simultaneously.

[0009] By adopting the above technical solution, using a hinged structure of the middle template and upper and lower side templates, and combining multiple sets of driving components, the template system can have two states: unfolding for construction and retracting for movement. The first adjusting driving component controls the angle of the upper side template, the second adjusting driving component adjusts the posture of the lower side template, and the lifting driving component achieves overall vertical positioning. This multi-degree-of-freedom adjustment capability allows the trolley to closely fit the inner wall of the tunnel with different curvatures, ensuring the accuracy of the pouring outline.

[0010] Preferably, when the upper and lower templates of the two template trolley bodies are unfolded to facilitate the pouring of the post-pouring strip, the vertical surfaces of the upper templates of the two template trolley bodies are fitted together, and the vertical surfaces of the lower templates of the two template trolley bodies are fitted together, and the connecting surfaces are sealed by a sealing structure.

[0011] By adopting the above technical solution, when the two formwork trolleys are in place on the curve section, the vertical surfaces of their upper and lower side formworks fit together and are sealed. This not only ensures the airtightness of the joint to prevent grout leakage, but also improves the overall structural stability through the large contact area, so that the post-cast strip and the adjacent segments form a smooth transition.

[0012] Preferably, an installation groove is provided between the joints of the two template trolley bodies for fitting into the template connection structure during the post-pouring strip construction; the installation groove is distributed at the edges of the middle template connection position, the upper template connection position, and the lower template connection position of the two template trolleys; when the template connection structure is connected between the two template trolley bodies through the installation groove, the outer surface of the template connection structure is flush with the surfaces of the upper template, the lower template, and the middle template of the two template trolley bodies.

[0013] By adopting the above technical solution, an installation groove is set at the template joint to fit into the template joint structure, so that the outer surface of the joint is flush with the surface of the main template, effectively avoiding the surface protrusion or misalignment problems common in traditional splicing methods, ensuring the smoothness of the tunnel inner wall, and the modular design facilitates quick assembly and disassembly.

[0014] Preferably, when the immersed tube segment is poured, the installation grooves between the two template trolley bodies are joined together, and a recess is formed on the outside of the two template trolleys, the recess being filled with a sealing strip.

[0015] By adopting the above technical solution, the recessed area formed by the sealing strip is filled, which not only prevents concrete slurry from seeping into the joint and affecting demolding, but also reserves operating space for the separation of the formwork during the subsequent construction of the curved section, thus achieving a seamless conversion between the construction modes of the straight section and the curved section.

[0016] Preferably, the first adjustment drive component includes a plurality of first telescopic rods, one end of each of the plurality of first telescopic rods is hinged to the inner support frame and converges on the upper side of the inner support frame, and the other end of each of the plurality of first telescopic rods is hinged to the inner side of the upper template and distributed at intervals along the contour of the upper template.

[0017] By adopting the above technical solution, multiple sets of first telescopic rods are radially distributed and hinged at multiple points to the upper template, making the template more uniformly stressed and avoiding the risk of deformation caused by local stress concentration. At the same time, the convergent hinge design saves internal space and meets the requirements for small space construction.

[0018] Preferably, the bottom of the inner support frame is provided with a traveling mechanism, which moves on a linear guide rail and an arc-shaped guide rail.

[0019] By adopting the above technical solutions, the cooperation between the traveling mechanism and the guide rail makes the trolley movement more precise and efficient. In particular, the ability to move on the curved guide rail solves the technical bottleneck that traditional trolleys can only move in a straight line and cannot adapt to curved tunnels.

[0020] Preferably, a horizontal hydraulic cylinder is provided between the two template trolley bodies. The two ends of the horizontal hydraulic cylinder are respectively hinged to the top of the inner support frame of the two template trolley bodies. The extension and pushing action of the hydraulic cylinder, in conjunction with the walking function of the template trolley body, moves one of the template trolleys to the construction position of the post-pouring strip.

[0021] By adopting the above technical solution, the synergistic effect of the horizontal hydraulic cylinder and the traveling mechanism, through the jacking of the hydraulic cylinder to assist the traveling mechanism, enables the fine-tuning and positioning of the formwork trolley. Especially during construction on curved sections, it can precisely control the relative position and angle of the two trolley bodies, ensuring the rapid and accurate positioning of the post-pouring strip formwork system.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By utilizing the combined design of linear guide rails and arc guide rails, the main body of the formwork trolley can meet the pouring requirements of the straight section of the immersed tube segment, and can also adapt to the construction requirements of the post-pouring strip at the tunnel inflection point through the arc guide rail, thus achieving two uses in one machine. 2. An installation groove is set at the template joint to fit into the template joint structure, so that the outer surface of the joint is flush with the surface of the main template, avoiding the surface protrusion or misalignment problems common in traditional splicing methods, ensuring the smoothness of the tunnel inner wall, and the modular design facilitates quick assembly and disassembly. 3. By filling the recessed area formed by the sealing strip, it not only prevents concrete slurry from seeping into the joint and affecting demolding, but also reserves operating space for the separation of formwork during the subsequent construction of curved sections, realizing a seamless conversion between the construction modes of straight and curved sections. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a multifunctional post-cast strip template trolley structure for immersed tunnels in an embodiment of this application, during the construction of the post-cast strip at the turning point of the immersed tunnel.

[0024] Figure 2This is a schematic diagram of one of the template trolley bodies in a multifunctional post-pouring strip template trolley structure for immersed tunnels according to an embodiment of this application, when it moves to the post-pouring strip construction position.

[0025] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the overall structure of a multi-functional post-cast strip template trolley structure for immersed tunnels during the pouring of immersed tunnel segments, according to an embodiment of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Main body of the template trolley; 11. Inner support frame; 12. Traveling mechanism; 13. Intermediate template; 14. Lifting drive component; 15. Upper template; 16. Lower template; 2. Template connection structure; 3. Installation gap; 5. Installation groove; 6. Recessed position; 7. Horizontal hydraulic cylinder. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a multifunctional post-cast strip formwork trolley structure for immersed tunnels, referring to... Figures 1 to 4 The system includes two formwork trolley bodies 1, a formwork connecting structure 2, linear guide rails, and curved guide rails. The linear guide rails extend along the length of the immersed tunnel segment, and the curved guide rails connect to the ends of the linear guide rails. The curvature of the curved guide rails matches the curvature of the inflection point of the immersed tunnel. This design allows the formwork trolley bodies 1 to move smoothly on both the linear and curved guide rails, meeting the needs of different construction positions. When pouring the immersed tunnel segment, the two formwork trolley bodies 1 slide on the linear guide rails and are arranged side by side along the length of the segment, serving as the inner formwork trolleys for the immersed tunnel segment, enabling the pouring of straight sections. When pouring the post-pouring strip at the inflection point of the immersed tunnel, one of the formwork trolley bodies 1 moves along the extension direction of the curved guide rail and lands at the post-pouring strip construction position. A certain angled installation gap 3 is formed between the two formwork trolley bodies 1, which is connected by the formwork connecting structure 2, thus serving as the inner formwork trolley for the post-pouring strip, solving the problem of post-pouring strip construction on curves. The template connection structure 2 includes multiple splicing plates and connecting components. The splicing plates are typically made of high-strength steel plates. The main body shape of the splicing plate is adapted to the contour of the installation gap 3, and the two side edges are adapted to the installation groove 5 to ensure a tight fit within the installation groove 5. The connecting components can be bolts and nuts. By passing the bolts through the corresponding holes on the splicing plates and the template trolley body 1, and then tightening them with nuts, a stable connection between the splicing plates and the template trolley body 1 is achieved.

[0030] Specifically, the main body 1 of the formwork trolley includes a middle formwork 13, two upper side formworks 15, two lower side formworks 16, and an inner support frame 11. The middle formwork 13 is located above the inner support frame 11 and is typically flat. It is made of high-strength steel to ensure it can withstand significant pressure during concrete pouring. The two upper side formworks 15 are hinged to both sides of the middle formwork 13. The upper side formworks 15 are generally curved to better fit the tunnel wall. The hinges between the upper side formworks 15 and the middle formwork 13 can be made of steel, providing good strength and durability. The two lower side formworks 16 correspond one-to-one with the two upper side formworks 15. The end of the upper side formwork 15 furthest from the inner support frame 11 is hinged to the corresponding lower side formwork 16, also using hinges. The inner support frame 11 is equipped with a first adjustment drive component to drive the upper side formworks 15 to expand or contract. The first adjustment drive component includes several first telescopic rods. One end of each first telescopic rod is hinged to the inner support frame 11 and converges on the upper side of the inner support frame 11. The other end of each first telescopic rod is hinged to the inner side of the upper template 15 and distributed at intervals along the contour of the upper template 15. The first telescopic rods can be hydraulic telescopic rods, which have the characteristics of large telescopic force and high control precision. By using multiple sets of first telescopic rods radially distributed and hinged at multiple points to the upper template 15, the template is subjected to more uniform force, avoiding the risk of deformation caused by local stress concentration. At the same time, the convergent hinge design saves internal space and meets the requirements of small space construction. The inner support frame 11 is also provided with a second adjustment drive component, which is used to drive the lower template 16 to expand or contract. The second adjustment drive component can be similar to the first adjustment drive component, using a hydraulic telescopic rod. The posture of the lower template 16 is adjusted by controlling the extension and contraction of the telescopic rod. The bottom of the inner support frame 11 is equipped with a lifting drive component 14. The lifting drive component 14 forces the inner support frame 11 and the intermediate template 13 to move upward by lifting downward, and forces the inner support frame 11 and the intermediate template 13 to move downward by retracting. The lifting drive component 14 can be a hydraulic jack, which has a large lifting force and can stably achieve the vertical positioning of the template. When the pipe segment pouring construction or the post-pouring strip pouring construction is carried out, the upper template 15, lower template 16 and intermediate template 13 of the two template trolley bodies 1 are all deployed and positioned simultaneously.

[0031] Specifically, when the upper formwork 15 and lower formwork 16 of the two formwork trolley bodies 1 are unfolded to facilitate the pouring of the post-cast strip, the vertical surfaces of the upper formwork 15 and the lower formwork 16 of the two formwork trolley bodies 1 are closely connected, and the connecting surfaces are sealed through a sealing structure. The sealing structure can be a rubber sealing strip, which has good elasticity and sealing performance, and can effectively prevent concrete grout leakage. This ensures the airtightness of the joint to prevent grout leakage, and also improves the overall structural stability through the large contact area, allowing the post-cast strip to form a smooth transition with adjacent segments.

[0032] Specifically, an installation groove 5 is provided between the joints of the two formwork trolley bodies 1, for fitting into the formwork connection structure 2 during the post-pouring strip construction. The installation grooves 5 are distributed along the edges of the joints of the middle formwork 13, the upper formwork 15, and the lower formwork 16. The installation grooves 5 are generally rectangular in shape, and their dimensions match the formwork connection structure 2. When the formwork connection structure 2 is connected between the two formwork trolley bodies 1 via the installation grooves 5, the outer surface of the formwork connection structure 2 is flush with the surfaces of the upper formwork 15, lower formwork 16, and middle formwork 13 of the two formwork trolley bodies 1. This design effectively avoids the surface protrusions or misalignments common in traditional splicing methods, ensuring the smoothness of the tunnel wall, while the modular design facilitates quick assembly and disassembly.

[0033] Specifically, during the pouring of the immersed tunnel segments, the installation grooves 5 between the two formwork trolley bodies 1 are joined together, forming recesses 6 on the outer sides of the two formwork trolleys. These recesses 6 are filled with sealing strips. The sealing strips can be made of rubber. By filling the recesses 6, concrete slurry is prevented from seeping into the joints and affecting demolding, while also providing operational space for the separation of formwork during subsequent curved section construction, achieving a seamless transition between straight and curved section construction modes.

[0034] Specifically, a traveling mechanism 12 is installed at the bottom of the inner support frame 11. The traveling mechanism 12 moves on linear and curved guide rails. The traveling mechanism 12 can be a wheeled traveling mechanism, including wheels and a drive motor. The wheels use high-strength rubber tires, which have good wear resistance and grip. The drive motor can be an electric motor. By controlling the speed and direction of the motor, the precise movement of the template trolley body 1 on the guide rails is achieved. The cooperation between the traveling mechanism 12 and the guide rails makes the trolley movement more precise and efficient, especially in its ability to move on curved guide rails, solving the technical bottleneck of traditional trolleys that can only move in a straight line and cannot adapt to curved tunnels.

[0035] Specifically, a horizontal hydraulic cylinder 7 is installed between the two formwork trolley bodies 1. The two ends of the horizontal hydraulic cylinder 7 are hinged to the top of the inner support frame 11 of the two formwork trolley bodies 1. The extension and pushing action of the hydraulic cylinder, combined with the traveling function of the formwork trolley body 1, moves one of the formwork trolleys to the construction position of the post-pouring strip. The horizontal hydraulic cylinder 7 is also hydraulically driven, and its hinged ends can be connected by pins to ensure flexible rotation during the pushing process. Through the coordinated action of the horizontal hydraulic cylinder 7 and the traveling mechanism 12, especially during construction on curved sections, the relative position and angle of the two trolley bodies can be precisely controlled, ensuring the rapid and accurate positioning of the post-pouring strip formwork system.

[0036] The implementation principle of this embodiment is as follows: This multi-functional formwork trolley structure for immersed tunnels, through the combination of linear and arc-shaped guide rails and the adjustable structure of the trolley body 1, achieves different construction requirements in straight sections and curved post-pouring strips of the immersed tunnel. The multi-degree-of-freedom adjustment capability of the trolley body 1, including the expansion and contraction of the upper formwork 15 and the lower formwork 16, as well as the overall vertical positioning, allows it to closely fit the tunnel inner wall with different curvatures, ensuring the accuracy of the pouring outline. The use of the formwork connection structure 2 and the sealing structure ensures the sealing and structural stability during construction, improving construction quality. The synergistic effect of the traveling mechanism 12 and the horizontal hydraulic cylinder 7 solves the problem of movement and positioning of the trolley in a limited space, improves construction efficiency, and effectively improves the problems of poor adaptability and long construction cycle of existing formwork trolleys.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multifunctional post-cast strip formwork trolley structure for immersed tunnels, characterized in that: It includes two template trolley bodies (1), a template connecting structure (2), a linear guide rail and an arc-shaped guide rail. The linear guide rail extends along the length of the immersed tunnel segment, and the arc-shaped guide rail is connected to the end of the linear guide rail. The arc of the arc-shaped guide rail is consistent with the arc of the inflection point of the immersed tunnel. When the immersed tunnel segment is being poured, the two template trolley bodies (1) slide on the linear guide rail and are arranged side by side along the length of the segment to serve as the inner template trolley for the immersed tunnel segment. When the post-pouring strip is poured at the turning point of the immersed tunnel, one of the formwork trolley bodies (1) moves along the extension direction of the arc-shaped guide rail and is positioned at the construction position of the post-pouring strip. A certain angle installation gap (3) is formed between the two formwork trolley bodies (1). The installation gap (3) is connected by the formwork connection structure (2) to be used as a formwork trolley in the post-pouring strip.

2. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 1, characterized in that: The template trolley body (1) includes a middle template (13), two upper templates (15), two lower templates (16), and an inner support frame (11). The middle template (13) is located above the inner support frame (11). The two upper templates (15) are respectively hinged to both sides of the middle template (13). The two lower templates (16) correspond one-to-one with the two upper templates (15). The end of the upper template (15) away from the inner support frame (11) is hinged to the corresponding lower template (16). The inner support frame (11) is provided with a first adjustment drive component for driving the upper templates (15) to unfold or... Contraction; the inner support frame (11) is provided with a second adjustment drive component, which is used to drive the lower template (16) to unfold or contract; the bottom of the inner support frame (11) is provided with a lifting drive component (14), which forces the inner support frame (11) and the middle template (13) to move upward by lifting downward, and forces the inner support frame (11) and the middle template (13) to move downward by contraction; when the pipe segment pouring construction or the post-pouring strip pouring construction is carried out, the upper template (15), lower template (16) and middle template (13) of the two template trolley bodies (1) are all unfolded and positioned at the same time.

3. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 2, characterized in that: When the upper template (15) and lower template (16) of the two template trolley bodies (1) are unfolded to cooperate with the construction of the post-pouring strip, the vertical surfaces of the upper template (15) of the two template trolley bodies (1) are closely connected to each other, and the vertical surfaces of the lower template (16) of the two template trolley bodies (1) are closely connected to each other, and the connecting surfaces are sealed by a sealing structure.

4. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 2, characterized in that: An installation groove (5) is provided between the joints of the two template trolley bodies (1) for fitting into the template connection structure (2) during the post-pouring strip pouring construction; the installation groove (5) is distributed at the edge of the joint position of the middle template (13), the edge of the joint position of the upper template (15) and the edge of the joint position of the lower template (16) of the two template trolleys; When the template connecting structure (2) is connected between the two template trolley bodies (1) through the mounting groove (5), the outer surface of the template connecting structure (2) is flush with the surfaces of the upper template (15), lower template (16) and middle template (13) of the two template trolley bodies (1).

5. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 4, characterized in that: When the immersed tube segment is poured, the installation groove (5) between the two template trolley bodies (1) are joined together and a recess (6) is formed on the outside of the two template trolleys. The recess (6) is filled with a sealing strip.

6. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 2, characterized in that: The first adjustment drive includes a plurality of first telescopic rods. One end of each of the plurality of first telescopic rods is hinged to the inner support frame (11) and gathered on the upper side of the inner support frame (11). The other end of each of the plurality of first telescopic rods is hinged to the inner side of the upper template (15) and distributed at intervals along the contour of the upper template (15).

7. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 2, characterized in that: The bottom of the inner support frame (11) is provided with a walking mechanism (12), which moves on a linear guide rail and an arc-shaped guide rail.

8. The multifunctional post-cast strip formwork trolley structure for immersed tunnels according to claim 7, characterized in that: A horizontal hydraulic cylinder (7) is provided between the two template trolley bodies (1). The two ends of the horizontal hydraulic cylinder (7) are respectively hinged to the top of the inner support frame (11) of the two template trolley bodies (1). The extension and pushing action of the horizontal hydraulic cylinder (7) is combined with the walking function of the template trolley body (1) to move one of the template trolley bodies (1) to the construction position of the post-pouring strip.

Images