Overwater pier column pouring device and construction method thereof

Abstract

The invention discloses an overwater pier column pouring device, which belongs to the technical field of overwater pier column pouring, and comprises a buoyancy tank platform with a positioning column at the bottom, and the left side and the right side of the top of the buoyancy tank platform are respectively provided with a mold clamping mechanism; each die clamping mechanism is composed of a first fixed rail, a movable base, a telescopic air cylinder, a stand column, a second fixed rail, an electric telescopic rod, a mounting frame, a third driving motor, a driving gear, a driven gear, a two-way threaded rod and a clamping plate. Through the design of the buoyancy tank platform and the positioning columns, the device can provide a stable working platform on the water surface, the stability and safety in the construction process are ensured, automatic positioning, clamping and height adjustment of a formwork are achieved through a telescopic air cylinder, a driving motor, an electric telescopic rod and other assemblies in the device, manual operation is reduced, and the construction efficiency is improved. The construction efficiency is improved, formwork installation and concrete pouring can be rapidly completed, and the construction period is shortened. The invention further provides an overwater pier column pouring construction method.

Description

Technical Field

[0001] The invention belongs to the field of water pier casting technology and provides a water pier casting device and a construction method thereof. Background Art

[0002] As a common substructure of bridges, the quality of concrete construction of piers has a vital impact on the overall stability of bridges. In the traditional water pier casting construction, the construction equipment usually has problems such as poor stability, complex operation, and low efficiency. At the same time, these devices often require a lot of manual operation, which not only increases construction costs but also increases construction risks. In addition, traditional construction methods have many inconveniences in template positioning, adjustment and fixation, making it difficult to ensure construction accuracy, and the impact on the environment during construction is relatively large, which is not conducive to sustainable development. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a water pier column casting device with a stable structure and convenient adjustment, which can effectively solve the problems of poor stability, complex operation and low efficiency in traditional construction methods. At the same time, another purpose of the present invention is to provide an implementation method for casting water pier columns, which helps to improve the accuracy and efficiency of construction, reduce construction risks, and promote the sustainable development of bridge construction.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The present invention provides a pier column casting device on water, including a pontoon platform with a positioning column arranged at the bottom, a clamping mechanism is arranged on the left and right sides of the top of the pontoon platform, and a single clamping mechanism is composed of a first fixed rail, a movable base, a telescopic cylinder, a column, a second fixed rail, an electric telescopic rod, a mounting frame, a third drive motor, a driving gear, a driven gear, a bidirectional threaded rod, and a clamping plate, wherein the first fixed rail and the telescopic cylinder are both installed on the pontoon platform, the output end of the telescopic cylinder is connected to the movable base, and the movable base is slidably arranged in the first fixed rail; the column is arranged on the movable base; the second fixed rail is arranged on the column; the mounting frame is arranged on the second fixed rail through the electric telescopic rod; the third drive motor is arranged in the mounting frame, and the output end of the third drive motor is connected with the driving gear; the clamping plate is arranged in two, which are respectively slidably arranged in the mounting frame, and a bidirectional threaded rod with a driven gear is arranged between the two clamping plates, and the driving gear and the driven gear are meshed and driven. In this way, the positioning column and the pontoon platform design ensure the stability of the device during water construction and can resist the fluctuation of the water surface. The clamping mechanism can achieve fast and accurate positioning and adjustment of the template through the cooperation of the sliding track and the cylinder, improving the construction accuracy. The application of the electric telescopic rod and the drive motor makes the operation easier, reduces manual intervention, and improves work efficiency. This device design takes into account the safety during the construction process and reduces the construction risks caused by unstable templates.

[0006] Optionally, the mold clamping mechanism further includes a first driving motor, a driving gear and a connecting gear, wherein the first driving motor is fixedly arranged on the movable base, the driving gear and the column are both rotatably arranged on the movable base, the connecting gear is sleeved on the column, and the output end of the first driving motor is connected to the driving gear, and the connecting gear meshes with the driving gear for transmission. In this way, the rotation of the connecting gear can effectively drive other components of the mold clamping mechanism, thereby realizing the rotation function of the column.

[0007] Optionally, the clamping mechanism further includes a second drive motor, an output shaft, a threaded rod and a movable mounting plate, wherein the second drive motor is fixedly arranged on the column, the threaded rod is rotatably arranged on the second fixed track, and the output shaft of the second drive motor is connected to the threaded rod, and the movable mounting plate is slidably arranged on the second fixed track and threadedly connected to the threaded rod. The second drive motor enables the threaded rod to rotate so that the movable mounting plate can move axially along the threaded rod, thereby achieving displacement of related components.

[0008] Optionally, the clamping mechanism further includes a guide rod disposed between the two clamping plates, which helps maintain the relative position of the clamping plates 22, ensuring that the clamping plates can evenly apply force during the clamping process, thereby improving the stability and consistency of the clamping. The two clamping plates are provided with serrations on their respective facing surfaces, and this structure enables the clamping mechanism to better lock the workpiece during clamping, ensuring its safety and stability during processing or operation. In this way, the clamping mechanism can achieve a stronger clamping effect and higher operational reliability.

[0009] Optionally, the casting device also includes at least one casting pipe arranged on the top of the pontoon platform, which is mainly used to transport casting materials (such as concrete or other liquid materials) to the required casting position, and the pontoon platform 1 provides a stable support structure and provides the necessary space and support for the setting of the casting pipe.

[0010] Optionally, the pouring pipe adopts a telescopic structure, a third fixed track with a screw is provided on the pontoon platform, a sliding bracket is provided on the pouring pipe, and the sliding bracket is slidably arranged on the third fixed track and threadedly connected with the screw. This design enables the pouring pipe to be telescopic as needed to meet the pouring needs. The combined design of the fixed track with a screw and the sliding bracket provides a flexible height adjustment function.

[0011] Optionally, multiple pouring pipes share a set of third fixed rails, screw rods and sliding brackets. This realizes centralized management and control of the pouring pipes. This design not only simplifies the structure of the device, but also reduces the number of required components, thereby reducing manufacturing and maintenance costs.

[0012] The present invention is also based on the construction method of the above-mentioned water pier casting device, comprising the following steps:

[0013] 1) Install the upper buoyancy platform using positioning columns;

[0014] 2) Start the electric telescopic rod to drive the installation frame to rise and fall, and move the two clamping plates to the clamping position of the template;

[0015] 3) Start the third driving motor, and the driving gear rotates to drive the driven gear and the bidirectional threaded rod to rotate, so that the two clamping plates make synchronous relative displacement with the assistance of the bidirectional threaded rod and the guide rod, and clamp the template;

[0016] 4) Start the electric telescopic rod to drive the installation frame to rise and fall to adjust the Z-direction position of the template clamped by the two clamping plates;

[0017] 5) Start the second drive motor, and the threaded rod rotates to drive the movable mounting plate to translate, so as to adjust the Y-axis position of the template clamped by the two clamping plates;

[0018] 6) Start the telescopic cylinder to drive the movable base to move horizontally to adjust the X-axis position of the template clamped by the two clamping plates;

[0019] 7) Connect the feed port of the pouring pipe to the outlet of the concrete machine. The staff on the floating platform manually controls the discharge port of the pouring pipe to allow the concrete to enter the formwork to complete the pouring.

[0020] Preferably, before step 2), the first driving motor is started, and the driving gear rotates to drive the connecting gear and the column to rotate, so that the installation frame is rotated out of the pontoon platform or retracted into the pontoon platform.

[0021] Preferably, in step 7), the worker manually rotates the drive screw to adjust the X-direction position of the casting pipe.

[0022] The beneficial effects of the present invention are as follows: the above-water pier casting device, through the design of the pontoon platform and the positioning column, can provide a stable working platform on the water surface, ensuring stability and safety during the construction process, and the components such as the telescopic cylinder, the drive motor and the electric telescopic rod in the device realize automatic positioning, clamping and height adjustment of the template, reducing manual operation and improving construction efficiency; through the precise control of the electric telescopic rod and the drive motor, the template can be accurately positioned and adjusted, and the construction accuracy is improved; through the integrated construction process, the device can quickly complete the installation of the template and the pouring of concrete, shortening the construction period.

[0023] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 It is a front perspective structural schematic diagram of the above-water pier casting device of the present invention;

[0026] Figure 2 It is a top view of the three-dimensional structure of the above-water pier casting device of the present invention;

[0027] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the mold clamping mechanism;

[0028] Figure markings: 1- pontoon platform; 2- positioning column; 3- first fixed rail; 4- movable base; 5- telescopic cylinder; 6- first drive motor; 7- drive gear; 8- column; 9- connecting gear; 10- second fixed rail; 11- second drive motor; 12- output shaft; 13- threaded rod; 14- movable mounting plate; 15- electric telescopic rod; 16- mounting frame; 17- third drive motor; 18- driving gear; 19- driven gear; 20- bidirectional threaded rod; 21- guide rod; 22- clamp; 23- third fixed rail; 24- screw rod; 25- sliding bracket; 26- casting pipe. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with specific implementation methods. The accompanying drawings are only used for exemplary descriptions and are only schematic diagrams, not actual drawings, and cannot be understood as limiting this patent; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0030] like Figure 1-3As shown, the above-water pier column casting device mentioned in the present invention comprises a pontoon platform 1 with a positioning column 2 arranged at the bottom, the positioning column 2 can effectively improve the stability of the pontoon platform 1 and ensure the safety during the construction process; and the pontoon platform 1 is convenient for circulation on the water. A clamping mechanism is arranged on the left and right sides of the top of the pontoon platform 1, which can flexibly clamp and position the template (not shown) to ensure the accuracy and stability of the template during the casting process. A single clamping mechanism is composed of a first fixed rail 3, a movable base 4, a telescopic cylinder 5, a column 8, a second fixed rail 10, an electric telescopic rod 15, a mounting frame 16, a third drive motor 17, a driving gear 18, a driven gear 19, a bidirectional threaded rod 20, and a clamping plate 22, wherein the first fixed rail 3 and the telescopic cylinder 5 are both mounted on the pontoon platform 1, the output end of the telescopic cylinder 5 is connected to the movable base 4, and the movable base 4 is slidably arranged in the first fixed rail 3, that is, the first fixed rail 3 provides a sliding rail for the movable base 4, and the movable base 4 is driven by the telescopic cylinder and can be moved on the first fixed rail 3 to adjust the position of the template; the column 8 is arranged on the movable base 4 to support the upper structure; the second fixed rail 10 is arranged on the column 8 to provide a mounting frame A sliding track is provided to achieve adjustment of the horizontal position; the mounting frame 16 is arranged on the second fixed track 10 through the electric telescopic rod 15 to further adjust the height and position of the template; the third drive motor 17 is arranged in the mounting frame 16, responsible for driving the movement of the clamp, and the output end of the third drive motor 17 is connected to the driving gear 18; the clamp 22 is provided with two, which are respectively slidably arranged in the mounting frame 16, and a bidirectional threaded rod 20 with a driven gear 19 is provided between the two clamps 22, which can achieve precise control and adjustment of the clamp 22, and the driving gear 18 and the driven gear 19 are meshed for transmission to achieve synchronous movement of the clamp 22, that is, the clamp 22 can be clamped and released under the drive of the electric telescopic rod 15 and the third drive motor 17, which is convenient for rapid replacement and adjustment of the template. With the above solution, the pontoon platform is transported to the construction site, and positioning columns are set to ensure stability. Then, according to the design size of the pier, the position of the clamping mechanism is adjusted by the telescopic cylinder and the electric telescopic rod. The template is clamped with a clamp to assist in the installation of the template, ensuring that the template meets the construction requirements and does not move during installation before pouring. Then, the concrete is pumped into the template through the concrete delivery system for pouring. Finally, after the concrete solidifies, the template is disassembled and the construction site is cleaned. In this way, through the application of the water pier casting device, the accuracy and efficiency of water construction can be effectively improved, and the quality and safety of bridge construction can be ensured.

[0031] In this embodiment, the clamping mechanism further includes a first driving motor 6, a driving gear 7 and a connecting gear 9, wherein the first driving motor 6 is fixedly arranged on the movable base 4 to provide the necessary power source, the driving gear 7 and the column 8 are both rotatably arranged on the movable base 4 to ensure its stability and reliability during operation, the connecting gear 9 is sleeved on the column 8 to play a role of connection and transmission, and the output end of the first driving motor 6 is connected to the driving gear 7, and the connecting gear 9 is meshed with the driving gear 7 for transmission. In this way, the driving gear 7 drives the connecting gear 9 to rotate through the first driving motor 6, so that the column 8 can rotate relative to the movable base 4, and then the second fixed rail 10, the mounting frame and the upper clamping plate 22 arranged on the column 8 are also rotatable, that is, the mounting frame and the upper clamping plate 22 can be rotated out of the pontoon platform 1 or retracted into the pontoon platform 1, or the mounting frame and the upper clamping plate 22 can be rotated from one side of the pontoon platform 1 to the other adjacent side.

[0032] In the present embodiment, the clamping mechanism further comprises a second drive motor 11, an output shaft 12, a threaded rod 13 and a movable mounting plate 14, wherein the second drive motor 11 is fixedly arranged on the column 8, as one of the power sources of the system, providing the necessary rotational power, the threaded rod 13 is rotatably arranged on the second fixed track 10, allowing the rotation of the motor to directly drive the rotation of the threaded rod 13, and the output shaft 12 of the second drive motor 11 is connected to the threaded rod 13, and the movable mounting plate 14 is slidably arranged on the second fixed track 10 and is threadedly connected to the threaded rod 13, and can realize linear movement by rotation. Through the rotation of the threaded rod, the movable mounting plate 14 can move linearly along the track, thereby realizing the precise adjustment of the clamping mechanism. Of course, in different embodiments, a rotating motor can also be arranged between the movable mounting plate 14 and the electric telescopic rod 15 to rotate the mounting frame and the clamping plate 22 thereon to better adjust the clamping orientation of the template.

[0033] In this embodiment, the clamping mechanism also includes a guide rod 21 arranged between the two clamping plates 22, which plays a guiding and supporting role. The two clamping plates 22 are provided with serrations (not shown) on their respective facing surfaces. The serrations are designed to increase the friction between the clamping plates 22 and the object to be clamped, thereby preventing the clamped object from sliding during the clamping process.

[0034] In this embodiment, the pouring device further includes at least one pouring pipe 26 disposed on the top of the pontoon platform 1. By disposing the pouring pipe 26 on the top of the pontoon platform 1, the pouring process is optimized, and a more efficient and accurate pouring operation is achieved.

[0035] In this embodiment, the pouring pipe 26 adopts a telescopic structure, which is convenient for adjusting the pouring outlet to meet the pouring requirements. A third fixed track 23 with a screw 24 is provided on the pontoon platform 1, providing a guide path for the sliding bracket 25. The pouring pipe 26 is provided with a sliding bracket 25, and the sliding bracket 25 is slidably arranged on the third fixed track 23 and threadedly connected with the screw 24. The design of the fixed track ensures that the sliding bracket remains stable during movement to avoid unnecessary shaking or deviation, and by rotating the screw, the sliding of the sliding bracket can be controlled, thereby realizing precise adjustment of the translation of the pouring pipe.

[0036] In this embodiment, multiple pouring pipes 26 share a set of third fixed rails 23, screws 24 and sliding brackets 25. By sharing a set of rails and screw systems, the operator can conveniently use multiple pouring pipes, especially when multiple pouring operations need to be performed simultaneously, which can improve work efficiency.

[0037] The present invention is also based on the construction method of the above-mentioned water pier casting device, comprising the following steps:

[0038] 1). Install the pontoon platform. Use the positioning column 2 to accurately position the pontoon platform 1 at the designated location in the pier construction waters. Ensure the level and stability of the pontoon platform for subsequent operations, and the pontoon platform can be easily transferred on different positioning columns. And pay attention: confirm the water depth and water flow conditions to ensure that the pontoon platform will not drift due to strong water flow. Check the firmness of the positioning column to prevent loosening during construction.

[0039] 2). Start the first drive motor. Start the first drive motor 6, and the drive gear 7 starts to rotate. The rotation of the drive gear drives the connecting gear 9 and the column 8 to rotate, thereby rotating the installation frame out of the pontoon platform 1. Then start the electric telescopic rod 15 to drive the lifting of the installation frame, so that the two clamping plates 22 move to the clamping position of the template. And note: before starting the motor, ensure that all operators maintain a safe distance and confirm that there are no obstacles in the surrounding environment. Monitor the operating status of the motor to ensure that there is no abnormal noise or vibration.

[0040] 3). Clamp the template. Start the third drive motor 17 to drive the driving gear 18 to rotate, and drive the driven gear 19 and the bidirectional threaded rod 20 to rotate. With the assistance of the bidirectional threaded rod and the guide rod, the two clamps will move relative to each other synchronously to clamp the template. And pay attention: make sure there is no foreign matter between the clamp and the template to prevent loose clamping. Monitor the clamping force of the clamp to avoid deformation of the template due to excessive clamping.

[0041] 4) Adjust the Z-axis position. Start the electric telescopic rod 15 again and adjust the lifting of the installation frame to accurately adjust the Z-axis position (vertical height) of the two clamping plates 22 clamping the template. And note: during the adjustment process, ensure that the template does not collide with the surrounding environment. Confirm that the lifting height meets the construction specifications and design requirements.

[0042] 5) Adjust the Y-axis position. Start the second drive motor 11, drive the threaded rod 13 to rotate, and drive the movable mounting plate 14 to translate, so as to adjust the Y-axis position (left and right position) of the two clamping plates clamping the template. And note: ensure that the template remains stable during the adjustment process to avoid offset or tilt due to movement.

[0043] 6) Adjust the X-axis position. Start the telescopic cylinder 5 to drive the movable base 4 to move horizontally to adjust the X-axis position (front and back position) of the two clamping plates clamping the template. And note: When adjusting, pay attention to the surrounding water environment to ensure the stability of the equipment when operating on water.

[0044] 7) Connect the pouring pipe. Connect the feed port of the pouring pipe 26 to the outlet of the concrete machine to ensure that the connection is stable and leak-free. The staff manually controls the outlet of the pouring pipe on the pontoon platform 1 to transport the concrete into the formwork to complete the pouring. And note: During the pouring process, monitor the flow of concrete to ensure uniform pouring. And pay attention to the pouring speed to avoid uneven distribution of concrete due to pouring too fast.

[0045] 8) Adjust the pouring pipe position. The staff manually rotates the drive screw 24 to adjust the X-direction position of the pouring pipe to ensure that the concrete accurately enters each part of the formwork. And note: Ensure that the operator pays attention to safety during the adjustment process to avoid being pinched by moving parts.

[0046] 9) Retract after pouring. After pouring is completed, start the first drive motor 6, drive the gear 7 to rotate, drive the connecting gear 9 and the column 8 to rotate, and retract the installation frame into the pontoon platform 1. And note: Check the pouring situation to ensure that the concrete has completely filled the formwork. When retracting the installation frame, ensure that there are no obstacles in the surrounding environment to avoid collision.

[0047] The above detailed steps can ensure that the pouring process of the water pier is efficient, accurate and safe. Each step should be carried out strictly in accordance with the operating procedures to improve the construction quality and efficiency while ensuring the safety of the construction workers.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. An above-water pier casting device, characterized in that: The invention comprises a pontoon platform (1) having a positioning column (2) arranged at the bottom, a clamping mechanism is arranged on the left and right sides of the top of the pontoon platform (1), and a single clamping mechanism is composed of a first fixed rail (3), a movable base (4), a telescopic cylinder (5), a column (8), a second fixed rail (10), an electric telescopic rod (15), a mounting frame (16), a third driving motor (17), a driving gear (18), a driven gear (19), a bidirectional threaded rod (20), and a clamping plate (22), wherein the first fixed rail (3) and the telescopic cylinder (5) are both installed on the pontoon platform (1), the output end of the telescopic cylinder (5) is connected to the movable base (4), and the movable base (4) is connected to the movable base (4). The movable base (4) is slidably arranged in the first fixed track (3); the column (8) is arranged on the movable base (4); the second fixed track (10) is arranged on the column (8); the mounting frame (16) is arranged on the second fixed track (10) through the electric telescopic rod (15); the third drive motor (17) is arranged in the mounting frame (16), and the output end of the third drive motor (17) is connected to the driving gear (18); two clamping plates (22) are arranged, which are slidably arranged in the mounting frame (16), and a bidirectional threaded rod (20) with a driven gear (19) is arranged between the two clamping plates (22), and the driving gear (18) and the driven gear (19) are meshed and driven.

2. The above-water pier casting device according to claim 1, characterized in that: The mold clamping mechanism further comprises a first driving motor (6), a driving gear (7) and a connecting gear (9), wherein the first driving motor (6) is fixedly arranged on the movable base (4), the driving gear (7) and the column (8) are both rotatably arranged on the movable base (4), the connecting gear (9) is sleeved on the column (8), and the output end of the first driving motor (6) is connected to the driving gear (7), and the connecting gear (9) is meshed with the driving gear (7) for transmission.

3. The above-water pier casting device according to claim 2, characterized in that: The clamping mechanism also includes a second driving motor (11), an output shaft (12), a threaded rod (13) and a movable mounting plate (14), wherein the second driving motor (11) is fixedly arranged on the column (8), the threaded rod (13) is rotatably arranged on the second fixed track (10), and the output shaft (12) of the second driving motor (11) is connected to the threaded rod (13), and the movable mounting plate (14) is slidably arranged on the second fixed track (10) and is threadedly connected to the threaded rod (13).

4. The above-water pier casting device according to claim 3, characterized in that: The clamping mechanism further comprises a guide rod (21) arranged between two clamping plates (22), and the two clamping plates (22) are provided with saw teeth on their respective facing corresponding surfaces.

5. The above-water pier casting device according to any one of claims 1 to 4, characterized in that: The pouring device further comprises at least one pouring pipe (26) arranged on the top of the pontoon platform (1).

6. The above-water pier casting device according to claim 5, characterized in that: The pouring pipe (26) adopts a telescopic structure. A third fixed track (23) with a screw rod (24) is provided on the pontoon platform (1). A sliding bracket (25) is provided on the pouring pipe (26). The sliding bracket (25) is slidably arranged on the third fixed track (23) and is threadedly connected to the screw rod (24).

7. The above-water pier casting device according to claim 6, characterized in that: A plurality of pouring pipes (26) share a set of third fixed rails (23), screw rods (24) and sliding brackets (25).

8. The construction method of the water pier casting device according to any one of claims 1 to 7 is characterized in that: The steps include: 1) Install the upper buoyancy platform using positioning columns; 2) Start the electric telescopic rod to drive the installation frame to rise and fall, and move the two clamping plates to the clamping position of the template; 3) Start the third driving motor, and the driving gear rotates to drive the driven gear and the bidirectional threaded rod to rotate, so that the two clamping plates make synchronous relative displacement with the assistance of the bidirectional threaded rod and the guide rod, and clamp the template; 4) Start the electric telescopic rod to drive the installation frame to rise and fall to adjust the Z-direction position of the template clamped by the two clamping plates; 5) Start the second drive motor, and the threaded rod rotates to drive the movable mounting plate to translate, so as to adjust the Y-axis position of the template clamped by the two clamping plates; 6) Start the telescopic cylinder to drive the movable base to move horizontally to adjust the X-axis position of the template clamped by the two clamping plates; 7) Connect the feed port of the pouring pipe to the outlet of the concrete machine. The staff manually controls the discharge port of the pouring pipe on the floating platform to allow the concrete to enter the formwork to complete the pouring.

9. The construction method according to claim 8, characterized in that: Before step 2), the first driving motor is started, and the driving gear rotates to drive the connecting gear and the column to rotate, so that the installation frame is rotated out of the pontoon platform or retracted into the pontoon platform.

10. The construction method according to claim 8, characterized in that: In step 7), the worker manually rotates the drive screw to adjust the X-axis position of the casting pipe.

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