Subway station off-wall ditch rapid slip form equipment and construction method
By using fast sliding form equipment and low plastic concrete in the construction of the subway station's wall groove, combined with the design of moving wheels, slide rails, vibration devices and fixing devices, the problem of inefficient construction efficiency is solved, efficient and accurate construction is achieved and concrete quality is improved.
Patent Information
- Application Number
- CN202411675608.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-02-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, the construction efficiency of subway stations is low, resulting in a decrease in physical strength and lower efficiency of construction workers.
A rapid sliding mold equipment for the wall-off groove of the subway station is adopted, including casting molds, moving wheels, opening and closing structures, slide rails, vibration devices and fixing devices. Through the use of low-plastic concrete, combined with the design of moving wheels and slide rails, the casting mold can be quickly sliding and accurate positioned, the vibration device reduces concrete bubbles, and the fixing device prevents mismoving of the plug-in plate.
It significantly improves the construction efficiency of the wall-off groove, reduces the physical energy consumption of construction workers, and ensures the accurate positioning of the casting mold and the quality of concrete.
Smart Images
Figure CN119531595A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of wall trenches, and in particular to a rapid slipform equipment and construction method for wall trenches in subway stations. Background Art
[0002] A wall ditch is a drainage system usually used around the roof and walls of a building. It usually consists of a shallow ditch and a high retaining plate made of concrete. The retaining plate is located at a certain distance from the wall surface, which can effectively prevent water from penetrating from the wall surface into the ditch.
[0003] In the prior art, the wall ditch of a subway station is usually set up by pouring concrete, applying waterproof coating, and laying cast iron grates on it to ensure drainage effect and service life. However, when pouring concrete, the pouring distance is long, so the workers need to pour it in multiple sections, which leads to low construction efficiency. In order to speed up the pouring efficiency, the prior art sets up a pouring mold. The construction workers place the pouring mold at the position to be poured, and then pour concrete into the pouring mold. After the concrete solidifies, the pouring mold is moved to the next pouring position for pouring. In this way, the construction efficiency of the wall ditch can be effectively improved.
[0004] However, after each pouring, the construction workers need to pull out the pouring mold and move to the next pouring position. This will cause the construction workers' physical strength to decline rapidly, resulting in low efficiency of subsequent construction. In order to solve this technical problem, a subway station wall ditch rapid sliding formwork equipment and construction method are needed. Summary of the invention
[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide a rapid slipform equipment and construction method for a subway station wall trench, which is used to solve the technical problem of low efficiency in the construction of the wall trench in the existing technology.
[0006] The above-mentioned purpose of the present application is achieved through the following technical solutions: a rapid sliding formwork equipment for a subway station away from the wall ditch, comprising a casting mold and moving wheels arranged on both sides of the casting mold, the moving wheels being rotatably connected to the casting mold and the lowest surface of the moving wheels being coplanar with the lowest surface of the casting mold, the interior of the casting mold being hollow and the upper and lower surfaces being through-connected, an opening and closing structure being provided on one side of the casting mold, and the concrete used in the casting mold is low-plasticity concrete.
[0007] Furthermore, the opening and closing structure includes a plug-in groove opened on the upper surface of the casting mold, an opening opened on one side of the casting mold, and a plug-in plate plugged into the casting mold through the plug-in groove, and the plug-in plate is used to block the opening.
[0008] By adopting the above technical solution, when pouring the wall-away ditch, the casting mold is placed at the casting position, and then low-plasticity concrete is poured into the casting mold, because the definition of low-plasticity concrete is concrete with a slump between 10 and 40 mm. This type of concrete has lower fluidity, so after the concrete is injected into the casting mold, it is restricted by the casting mold and will not flow. Then the construction personnel pull the plug plate upward to expose the opening. At this time, the construction personnel can push the casting mold to move horizontally at the casting position. After the construction personnel complete the pouring of one section of the pouring position, they can directly slide the casting mold to the next position. Because of the characteristics of low-plasticity concrete, the construction personnel do not need to wait for the concrete to solidify before pouring the next position. This greatly improves the construction efficiency of the wall-away ditch, and the construction personnel can also save more physical strength by pushing the casting mold to move, further improving the construction efficiency.
[0009] Furthermore, the moving wheel is slidably connected to a slide rail, and the slide rail is laid on both sides of the casting position, and a gap is left between the moving wheel and the casting mold.
[0010] By adopting the above technical solution, although the setting of the moving wheels allows construction workers to save more physical strength when moving the casting mold, when the construction workers push the casting mold to move, it cannot be guaranteed that the route they use to push the casting mold to move is straight or in line with the casting position. This results in the construction workers having to move the casting mold to adjust its position after pushing it for a distance. The setting of the slide rails solves this technical problem. Before pouring the away-wall ditch, the slide rails are first accurately installed on both sides of the pouring position. After the installation is completed, the moving wheels of the casting mold are installed on the slide rails. In this way, when the construction workers push the casting mold to move, due to the limitation of the slide rails, the casting mold will only move along the slide rails. In this way, the casting mold will not deviate from the pouring position, making it more convenient for construction workers to pour the away-wall ditch.
[0011] Furthermore, vibration devices for vibrating the casting mold are provided on both sides of adjacent openings of the casting mold.
[0012] Furthermore, the vibration device includes a protective cover fixedly connected to the casting mold, a vibration column inserted into the protective cover, a rebound plate located on both sides of the vibration column and fixedly connected to the vibration column, and a vibration spring located between the rebound plate and the inner wall of the protective cover, one end of the vibration column abuts against the side wall of the casting mold, and the other end extends out of the protective cover, the rebound plate is located on both sides of one end of the vibration column abutting against the side wall of the casting mold, one end of the vibration spring is fixedly connected to the inner wall of the protective cover, and the other end abuts against the rebound plate.
[0013] By adopting the above technical solution, although the setting of the slide rail makes it more convenient for construction workers to cast the wall-separated trench, after pouring the wall-separated trench, the construction workers need to vibrate the casting mold to reduce the bubbles of concrete in the casting mold. In the prior art, the construction workers can pick up the casting mold and shake it to achieve the vibration effect, but the setting of the slide rail makes it impossible for the construction workers to pick up the casting mold. If the casting mold is shaken directly on the slide rail, the amplitude of shaking the casting mold is limited due to the limitation of the slide rail, and it cannot achieve a good effect. The setting of the vibration device solves this technical problem. After the construction workers pour the concrete, By pulling the vibration column to move away from the casting mold, the rebound plate is compressed against the vibration spring. After the vibration column is pulled to move a certain distance, the vibration column is released, so that the vibration spring rebounds against the rebound plate, and the rebound plate drives the vibration column to move toward the casting mold and hit the side wall of the casting mold. In this way, the concrete inside the casting mold vibrates, which can reduce the bubbles in the concrete inside the casting mold. Construction workers do not need to pick up and shake the casting mold to vibrate the concrete inside, making it more convenient for construction workers to vibrate the concrete. In addition, the construction efficiency can be improved by pulling the vibration column.
[0014] Furthermore, an elastic rubber sleeve is provided on one end of the vibration column abutting against the casting mold.
[0015] By adopting the above technical solution, the elastic rubber sleeve can prevent the vibration column from rigidly contacting the casting mold and causing damage to the casting mold or the vibration column.
[0016] Furthermore, fixing devices for fixing the plug board are provided on both sides of the plug board.
[0017] Furthermore, the fixing device includes fixing plates located on both sides of the plug-in board and fixing bolts passing through the fixing plates and abutting against the plug-in board, the fixing bolts are threadedly connected to the plug-in board, and the fixing plates are located on the upper surface of the casting mold and fixedly connected to the casting mold.
[0018] By adopting the above technical solution, although the setting of the plug-in board can control the switch of the opening of the casting mold to facilitate the casting of the construction workers, when the casting mold is pushed to move, the vibration generated by the movement may cause the plug-in board to move downward to block the opening. However, because the concrete has been poured below the plug-in board, the plug-in board moving downward will be inserted into the concrete that has been poured, resulting in the casting mold continuing to move. The poured concrete will be damaged, which makes it very troublesome for the workers to hold the plug-in board when pushing the casting mold to move. The setting of the fixing device solves this technical problem. Through the setting of the fixing device, when the construction workers need to push the casting mold to move, they pull the plug-in board upward so that it no longer blocks the opening, and then tighten the fixing bolts to make it abut against the plug-in board to clamp the plug-in board, so that the plug-in board will not move downward due to vibration, and adjust the bottom end of the plug-in board to contact the top surface of the poured concrete, and then fix it with the fixing device, and then push the casting mold, so that the plug-in board can also scrape the top surface of the poured concrete, making the construction of the construction workers more convenient.
[0019] Furthermore, a handle is fixedly provided on one end of the vibration column extending out of the protective cover.
[0020] By adopting the above technical solution, the handle makes it convenient for construction workers to pull the vibration column.
[0021] The construction method of a rapid slipform equipment for a subway station trench described in the above technical solution comprises the following steps: S1. Lay the track on both sides of the pouring position; S2, installing the moving wheels of the casting mold on the track; S3, pouring low-plasticity concrete into the casting mold; S4, pulling the vibration column by the handle to make the vibration column hit the two sides of the casting mold; S5. Pull the plug board upward to expose the opening, and make the bottom surface of the plug board coplanar with the top surface of the poured concrete; S6. Tighten the fixing bolts to make them abut against both sides of the plug-in board to clamp the plug-in board; S7, when pushing the casting mold to move, the plug-in plate levels the top surface of the poured concrete and moves the casting mold to the next casting position; S8. After moving to the next pouring position, turn the fixing bolts in the opposite direction and push the plug-in plate downward so that the plug-in plate blocks the opening, and then pour low-plastic concrete into the casting mold.
[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the moving wheel and the opening and closing structure, it is realized that when pouring the wall-away ditch, the casting mold is placed at the casting position, and then low-plasticity concrete is poured into the casting mold, because the definition of low-plasticity concrete is concrete with a slump between 10 and 40 mm. This type of concrete has low fluidity, so after the concrete is injected into the casting mold, it is restricted by the casting mold and will not flow. Then the construction personnel pull the plug plate upward to expose the opening. At this time, the construction personnel can push the casting mold to move horizontally at the casting position. After the construction personnel complete the pouring of one section of the pouring position, they can directly slide the casting mold to the next position. Because of the characteristics of low-plasticity concrete, the construction personnel do not need to wait for the concrete to solidify before pouring the next position. This greatly improves the construction efficiency of the wall-away ditch, and the construction personnel can save more physical strength by pushing the casting mold to move, further improving the purpose of construction efficiency.
[0023] 2. Through the setting of the slide rail, it is achieved that before pouring the away-wall ditch, the slide rail is first accurately installed on both sides of the pouring position. After the installation is completed, the moving wheels of the pouring mold are installed on the slide rail. In this way, when the construction workers push the pouring mold to move, due to the limitation of the slide rail, the pouring mold will only move along the slide rail, so that the pouring mold will not deviate from the pouring position, making it more convenient for the construction workers to pour the away-wall ditch.
[0024] 3. Through the setting of the vibration device, it is achieved by pulling the vibration column to move away from the casting mold, so that the rebound plate presses against the vibration spring for compression. After the vibration column is pulled to move a certain distance, the vibration column is released, so that the vibration spring presses against the rebound plate to rebound, and the rebound plate drives the vibration column to move toward the casting mold and hit the side wall of the casting mold, so that the concrete inside the casting mold vibrates, which can reduce the bubbles in the concrete inside the casting mold, so that the construction workers can vibrate the concrete inside the casting mold without picking up and shaking the casting mold, making it more convenient for the construction workers to vibrate the concrete.
[0025] 4. Through the setting of the fixing device, when the construction workers need to push the casting mold to move, they pull the plug plate upward so that it no longer blocks the opening, and then tighten the fixing bolts to make it abut against the plug plate to clamp the plug plate, so that the plug plate will not move downward due to vibration, and adjust the bottom end of the plug plate to contact the top surface of the poured concrete, and then fix it with the fixing device, and then push the casting mold, so that the plug plate can scrape the top surface of the poured concrete, making the construction of the construction workers more convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of the embodiment; Figure 2 It is another view of the overall structure of the embodiment; Figure 3 yes Figure 1 Enlarged view of part A in the middle.
[0027] Figure numerals: 1. casting mold; 10. moving wheel; 2. opening and closing structure; 20. opening; 21. plug-in board; 3. slide rail; 4. vibration device; 40. protective cover; 41. vibration column; 42. rebound plate; 43. vibration spring; 44. elastic rubber sleeve; 45. handle; 5. fixing device; 50. fixing plate; 51. fixing bolt. DETAILED DESCRIPTION
[0028] The present application is further described in detail below in conjunction with the accompanying drawings.
[0029] Example, see Figure 1 A rapid slipform equipment for a wall-away ditch of a subway station comprises a casting mold 1 and moving wheels 10 arranged on both sides of the casting mold 1, the moving wheels 10 are rotatably connected to the casting mold 1 and the lowest surface of the moving wheels 10 is coplanar with the lowest surface of the casting mold 1, the casting mold 1 is hollow inside and the upper and lower surfaces are through, an opening and closing structure 2 is arranged on one side of the casting mold 1, the opening and closing structure 2 comprises a plug-in groove opened on the upper surface of the casting mold 1, an opening 20 opened on one side of the casting mold 1 and a plug-in plate 21 plugged into the casting mold 1 through the plug-in groove, the plug-in plate 21 is used to block the opening 20, the concrete used in the casting mold 1 is low-plasticity concrete, when casting the wall-away ditch, the casting mold 1 is placed in the casting position, and then the low-plasticity concrete is poured into the casting mold 1, because the definition of low-plasticity concrete is collapse Concrete with a fall between 10 and 40 mm has a lower fluidity. After the concrete is injected into the casting mold 1, it is restricted by the casting mold 1 and will not flow. Then the construction personnel pull the plug plate 21 upward to expose the opening 20. At this time, the construction personnel can push the casting mold 1 to move horizontally at the casting position. After the construction personnel complete the casting of one section of the casting position, they can directly slide the casting mold 1 to the next position. Because of the characteristics of low-plasticity concrete, the construction personnel do not need to wait for the concrete to solidify before pouring the next position. This greatly improves the construction efficiency of the wall ditch, and the construction personnel can save more physical strength by pushing the casting mold 1 to move, further improving the construction efficiency.
[0030] Although the setting of the moving wheels 10 allows construction workers to save more physical energy when moving the casting mold 1, when the construction workers push the casting mold 1 to move, it cannot be guaranteed that the route for pushing the casting mold 1 to move is straight or in line with the casting position. This results in the construction workers having to move the casting mold 1 to adjust its position after pushing the casting mold 1 to move a certain distance. In order to solve this technical problem, in this embodiment, slide rails 3 are laid on both sides of the casting position, and the moving wheels 10 are slidably connected to the slide rails 3. A gap is left between the moving wheels 10 and the casting mold 1. Before pouring the away-wall ditch, the slide rails 3 are first accurately installed on both sides of the pouring position. After the installation is completed, the moving wheels 10 of the casting mold 1 are installed on the slide rails 3. In this way, when the construction workers push the casting mold 1 to move, due to the limitation of the slide rails 3, the casting mold 1 will only move along the slide rails 3. In this way, the casting mold 1 will not deviate from the casting position, making it more convenient for construction workers to pour the away-wall ditch.
[0031] Although the setting of the slide rail 3 makes it more convenient for construction workers to cast the wall-separated trench, after pouring the wall-separated trench, the construction workers need to vibrate the casting mold 1 to reduce the bubbles of concrete in the casting mold 1. In the prior art, the construction workers can pick up the casting mold 1 and shake the casting mold 1 to achieve the vibration effect, but the setting of the slide rail 3 makes it impossible for the construction workers to pick up the casting mold 1. If the casting mold 1 is shaken directly on the slide rail 3, the amplitude of shaking the casting mold 1 is limited due to the restriction of the slide rail 3, and it cannot achieve a good effect. In order to solve this technical problem, reference is made to Figure 2In this embodiment, a vibration device 4 for vibrating the casting mold 1 is provided on both sides of the adjacent openings 20 of the casting mold 1. The vibration device 4 includes a protective cover 40 fixedly connected to the casting mold 1, a vibration column 41 inserted into the protective cover 40, rebound plates 42 located on both sides of the vibration column 41 and fixedly connected to the vibration column 41, and a vibration spring 43 located between the rebound plate 42 and the inner wall of the protective cover 40. One end of the vibration column 41 abuts against the side wall of the casting mold 1, and the other end extends out of the protective cover 40. The rebound plate 42 is located on both sides of one end of the vibration column 41 abutting against the side wall of the casting mold 1. One end of the vibration spring 43 is fixedly connected to the inner wall of the protective cover 40, and the other end abuts against the rebound plate 42. After the construction personnel finish pouring the concrete, they pull the vibration column 41 to move away from the casting mold 1, so that the rebound plate 42 is compressed against the vibration spring 43, and the vibration column 41 is pulled to move a certain distance. After a certain distance, the vibration column 41 is released, so that the vibration spring 43 rebounds against the rebound plate 42, and the rebound plate 42 drives the vibration column 41 to move in the direction of the casting mold 1 and hit the side wall of the casting mold 1. In this way, the concrete inside the casting mold 1 vibrates, which can reduce the bubbles in the concrete inside the casting mold 1, so that the construction workers do not need to pick up and shake the casting mold 1 to vibrate the concrete inside it, making it more convenient for the construction workers to vibrate the concrete, and the construction efficiency can be improved by pulling the vibration column 41. An elastic rubber sleeve 44 is provided on one end of the vibration column 41 that abuts the casting mold 1, and a handle 45 is fixed on the end of the vibration column 41 that extends out of the protective cover 40. The elastic rubber sleeve 44 can prevent the vibration column 41 from rigidly contacting the casting mold 1 and causing damage to the casting mold 1 or the vibration column 41, and the handle 45 is convenient for the construction workers to pull the vibration column 41.
[0032] Although the plug board 21 can control the opening 20 of the casting mold 1 to facilitate the construction workers to cast, when the casting mold 1 is pushed to move, the vibration generated by the movement may cause the plug board 21 to move downward to block the opening 20. However, because the poured concrete is below the plug board 21, the plug board 21 moving downward will be inserted into the poured concrete, causing the pouring mold 1 to continue to move and destroy the poured concrete. It is very troublesome for the workers to hold the plug board 21 when pushing the casting mold 1 to move. In order to solve this technical problem, refer to Figure 3The fixing device 51 is used to fix the plug-in board 21 on both sides of the plug-in board 21, and the fixing device 5 includes fixing plates 50 located on both sides of the plug-in board 21 and fixing bolts 51 passing through the fixing plates 50 and abutting against the plug-in board 21. The fixing bolts 51 are threadedly connected to the plug-in board 21, and the fixing plates 50 are located on the upper surface of the casting mold 1 and are fixedly connected to the casting mold 1. Through the setting of the fixing device 5, when the construction personnel need to push the casting mold 1 to move, they pull the plug-in board 21 upward so that it no longer blocks the opening 20, and then tighten the fixing bolts 51 to abut against the plug-in board 21 to clamp the plug-in board 21, so that the plug-in board 21 will not move downward due to vibration, and adjust the bottom end of the plug-in board 21 to contact the top surface of the poured concrete, and then fix it with the fixing device 5, and then push the casting mold 1, so that the plug-in board 21 can scrape the top surface of the poured concrete, making the construction more convenient for the construction personnel.
[0033] Specific implementation process: first, lay the track on both sides of the pouring position, then install the pouring mold 1 on the track so that the moving wheel 10 slides and connects to the track, and then pour low-plastic concrete into the pouring mold 1. After pouring is completed, pull the vibration column 41 through the handle 45 to make the vibration column 41 hit the two sides of the pouring mold 1, and then pull the plug-in plate 21 upward to expose the opening 20, and make the bottom surface of the plug-in plate 21 coplanar with the top surface of the poured concrete, and then screw the fixing bolts 51 to make it abut against the two sides of the plug-in plate 21 to clamp the plug-in plate 21, and then push the pouring mold 1 to move. When the pouring mold 1 is moved, the plug-in plate 21 flattens the top surface of the poured concrete and moves the pouring mold 1 to the next pouring position. After pushing the pouring mold 1 to move to the next pouring position, it is necessary to screw the fixing bolts 51 in the opposite direction, and push the plug-in plate 21 downward to make the plug-in plate 21 block the opening 20, and then pour low-plastic concrete into the pouring mold 1, so as to prevent the concrete at the pouring position from flowing out of the pouring mold 1.
[0034] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A rapid sliding formwork device for a subway station trench, characterized in that: The invention comprises a casting mould (1) and moving wheels (10) arranged on both sides of the casting mould (1); the moving wheels (10) are rotatably connected to the casting mould (1) and the lowest surface of the moving wheels (10) is coplanar with the lowest surface of the casting mould (1); the casting mould (1) is hollow inside and the upper and lower surfaces are connected; an opening and closing structure (2) is arranged on one side of the casting mould (1); and the concrete used in the casting mould (1) is low-plasticity concrete.
2. According to claim 1, a rapid sliding formwork equipment for a subway station trench, characterized in that: The opening and closing structure (2) comprises a plug-in groove provided on the upper surface of the casting mold (1), an opening (20) opened on one side of the casting mold (1), and a plug-in plate (21) plugged into the casting mold (1) through the plug-in groove, wherein the plug-in plate (21) is used to block the opening (20).
3. According to claim 1, a rapid sliding formwork equipment for a subway station away from the wall trench is characterized in that: The moving wheel (10) is slidably connected to a slide rail (3), and the slide rail (3) is laid on both sides of the casting position. A gap is left between the moving wheel (10) and the casting mold (1).
4. According to claim 2, a rapid sliding formwork equipment for a subway station trench, characterized in that: Vibration devices (4) for vibrating the casting mold (1) are provided on both sides of the adjacent openings (20) of the casting mold (1).
5. According to claim 4, a rapid sliding formwork equipment for a subway station trench is characterized in that: The vibration device (4) comprises a protective cover (40) fixedly connected to the casting mold (1), a vibration column (41) inserted into the protective cover (40), a rebound plate (42) located on both sides of the vibration column (41) and fixedly connected to the vibration column (41), and a vibration spring (43) located between the rebound plate (42) and the inner wall of the protective cover (40), one end of the vibration column (41) abuts against the side wall of the casting mold (1), and the other end extends out of the protective cover (40), the rebound plate (42) is located on both sides of one end of the vibration column (41) abutting against the side wall of the casting mold (1), and one end of the vibration spring (43) is fixedly connected to the inner wall of the protective cover (40), and the other end abuts against the rebound plate (42).
6. According to claim 5, a rapid sliding formwork device for a subway station trench, characterized in that: An elastic rubber sleeve (44) is sleeved on one end of the vibration column (41) abutting against the casting mold (1).
7. According to claim 2, a rapid sliding formwork equipment for a subway station trench, characterized in that: Fixing devices (5) for fixing the plug board (21) are provided on both sides of the plug board (21).
8. The rapid sliding formwork equipment for the wall trench of a subway station according to claim 7, characterized in that: The fixing device (5) comprises fixing plates (50) located on both sides of the plug-in plate (21) and fixing bolts (51) passing through the fixing plates (50) and abutting against the plug-in plate (21); the fixing bolts (51) are threadedly connected to the plug-in plate (21); and the fixing plates (50) are located on the upper surface of the casting mold (1) and are fixedly connected to the casting mold (1).
9. The rapid sliding formwork equipment for the wall trench of a subway station according to claim 5, characterized in that: A handle (45) is fixedly provided on one end of the vibration column (41) extending out of the protective cover (40).
10. A construction method for a rapid slipform equipment for a subway station trench as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Lay the track on both sides of the pouring position; S2, installing the moving wheel (10) of the casting mold (1) on the track; S3, pouring low-plasticity concrete into the casting mold (1); S4, pulling the vibration column (41) by means of the handle (45) so that the vibration column (41) hits both sides of the casting mold (1); S5, pull the plug plate (21) upward to expose the opening (20), and make the bottom surface of the plug plate (21) coplanar with the top surface of the poured concrete; S6, tighten the fixing bolts (51) to make them abut against two sides of the plug-in board (21) to clamp the plug-in board (21); S7, when pushing the casting mold (1) to move, the plug-in plate (21) levels the top surface of the poured concrete and moves the casting mold (1) to the next casting position; S8. After moving to the next pouring position, the fixing bolt (51) is screwed in the opposite direction, and the plug-in plate (21) is pushed downward so that the plug-in plate (21) blocks the opening (20), and then low-plastic concrete is poured into the pouring mold (1).