Understructure building lifting platform for bridge construction

Abstract

The utility model relates to a substructure building lifting platform for bridge construction, which comprises a construction platform, two bases are arranged on the lower portion of the construction platform, driving motors are arranged on the upper sides of the left portions of the bases, two driving motors are also arranged on the lower side of the left portion of the construction platform, and output shafts of the driving motors are connected with double-shaft lead screws. The left portion and the right portion of the double-shaft lead screw are both in threaded connection with moving parts, the number of the moving parts is eight, a telescopic assembly is connected between the four moving parts on the front side, a telescopic assembly is also connected between the four moving parts on the rear side, the front portion and the rear portion of the construction platform are both rotationally connected with first unfolding plates, and the left portion and the right portion of the construction platform are both provided with supporting mechanisms. The driving motor drives the double-shaft lead screw and the moving part to move, so that the telescopic assembly can achieve stable lifting of the construction platform and accurately adapt to the pouring requirements of pier columns with different heights, meanwhile, the platform does not need to be disassembled when key joints such as a tie beam and a cover beam are constructed, the process conversion time can be shortened, and the overall construction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge construction technology, and in particular to a substructure lifting platform for bridge construction. Background Technology

[0002] In bridge engineering, the substructure is the supporting system of the bridge, responsible for transmitting the weight of the superstructure to the foundation. When constructing the substructure, the concrete pouring of piers, tie beams, and cap beams is the core process. Its construction efficiency and precision directly affect the overall quality of the bridge. Currently, hydraulic lifting platforms are used in the construction process, but this method cannot meet the requirements of high-precision construction and may result in large construction errors. Moreover, the construction of nodes such as tie beams and cap beams requires repeated disassembly and disassembly of the platform, which is time-consuming and affects the continuity of construction, thus hindering the overall efficiency of construction.

[0003] To address the aforementioned issues, a substructure lifting platform for bridge construction has been developed. Utility Model Content

[0004] To overcome the shortcomings of current construction methods that rely on hydraulic lifting platforms, which cannot meet the high-precision construction requirements, may lead to large construction errors, and require repeated disassembly and reassembly of the platform for the construction of nodes such as tie beams and cap beams, resulting in long process transitions, affecting the continuity of construction, and hindering the overall efficiency of construction, this utility model provides a substructure lifting platform for bridge construction.

[0005] The technical solution of this utility model is as follows: A substructure lifting platform for bridge construction includes a construction platform with two bases at its lower part. A drive motor is installed on the upper left side of each base, and two drive motors are also installed on the lower left side of the construction platform. A double-axis lead screw is connected to the output shaft of each drive motor. The upper double-axis lead screw is rotatably connected to the construction platform, and the lower double-axis lead screw is rotatably connected to the adjacent base. Each double-axis lead screw has eight moving parts threadedly connected to its left and right sides. A telescopic assembly connects the four front moving parts and the four rear moving parts. A first unfolding plate is rotatably connected to both the front and rear parts of the construction platform, and a second unfolding plate is rotatably connected to the inner side of each first unfolding plate. Support mechanisms are provided on both the left and right sides of the construction platform.

[0006] Furthermore, it is particularly preferred that the support mechanism includes a movable frame, with the movable frame slidably connected to both the left and right sides of the construction platform, and a support frame rotatably connected to each movable frame, with a rotating arm connected to the upper part of each support frame.

[0007] Furthermore, it is particularly preferred that an auxiliary propulsion mechanism is also included, the auxiliary propulsion mechanism including a mounting frame, two of the mounting frames are connected to the lower sides of both the front and rear parts of the construction platform, and rotating rollers are rotatably connected to the lower part of each mounting frame.

[0008] Furthermore, it is particularly preferred that the construction platform is equipped with guardrails at the rear and upper right side.

[0009] Furthermore, it is particularly preferred that the construction platform has four pre-drilled holes.

[0010] Furthermore, it is particularly preferred that the mounting brackets are all Z-shaped structures.

[0011] By adopting the above technical solutions, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model uses a drive motor to drive a dual-axis lead screw and moving parts, enabling the telescopic assembly to achieve stable lifting and lowering of the construction platform, accurately adapting to the pouring requirements of piers of different heights. At the same time, the platform does not need to be disassembled during the construction of key nodes such as tie beams and cap beams, which can reduce the process change time, improve the overall construction efficiency, and the stability of the construction platform facilitates construction operations such as rebar binding, formwork installation and concrete pouring, which helps to ensure the construction accuracy and quality of piers, tie beams and cap beams.

[0013] 2. This utility model uses a support mechanism to form a multi-point temporary support by utilizing a movable frame and a support frame, which helps to enhance the stability of the lifting platform base and telescopic components when they move upward. At the same time, the rotating roller in the auxiliary propulsion mechanism makes it easier to install rigid support materials. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the present invention.

[0016] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the support mechanism of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the auxiliary propulsion mechanism of this utility model.

[0018] The above-mentioned attached drawings include the following reference numerals: 1. Construction platform, 2. Base, 3. Telescopic component, 4. Moving part, 5. Drive motor, 6. Dual-axis lead screw, 7. First unfolding plate, 8. Second unfolding plate, 9. Support mechanism, 91. Moving frame, 92. Support frame, 93. Rotating handle, 10. Auxiliary propulsion mechanism, 101. Mounting frame, 102. Rotating roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model. Example 1

[0020] A type of lifting platform for the substructure of bridge construction, such as Figure 1 and Figure 2 As shown, the system includes a construction platform 1. Guardrails are connected to the rear and upper right sides of the construction platform 1. Four pre-drilled holes are located on the construction platform 1. Two bases 2 are located at the bottom of the construction platform 1. A drive motor 5 is installed on the upper left side of each base 2, and two more drive motors 5 are installed on the lower left side of the construction platform 1. A double-axis lead screw 6 is connected to the output shaft of each drive motor 5. The upper double-axis lead screw 6 is rotatably connected to the construction platform 1, and the lower double-axis lead screw 6 is rotatably connected to the adjacent base 2. Moving parts 4 are threadedly connected to both the left and right sides of the double-axis lead screw 6. There are a total of eight moving parts 4. Telescopic components 3 are connected between the four moving parts 4 on the front side, and telescopic components 3 are also connected between the four moving parts 4 on the rear side. A first unfolding plate 7 is rotatably connected to both the front and rear sides of the construction platform 1. A second unfolding plate 8 is rotatably connected to the inner side of each first unfolding plate 7. Support mechanisms 9 are provided on both the left and right sides of the construction platform 1.

[0021] like Figure 1 and Figure 3 As shown, the support mechanism 9 includes a movable frame 91. The movable frame 91 is slidably connected to both the left and right sides of the construction platform 1. A support frame 92 is rotatably connected to each movable frame 91. A rotating arm is connected to the upper part of each support frame 92.

[0022] It should be noted that in bridge engineering, the substructure is the supporting system of the bridge, responsible for transferring the weight of the superstructure to the foundation. During the construction of the bridge substructure, the ground beam reinforcement is first installed at designated locations, then the ground beam formwork is assembled, and the ground beam is poured. After the ground beam hardens, the ground beam formwork is removed. Then, the base 2 of the lifting platform is symmetrically installed at designated locations around the ground beam. Next, the pier reinforcement is hoisted, and the lifting platform is activated to assist in pouring the pier concrete. The drive motor 5 is started, and the rotation of the output shaft of the drive motor 5 drives the adjacent double-shaft lead screw 6 to rotate, which in turn drives the adjacent left and right moving parts 4 to move inwards, causing the telescopic components to... All three sections extend upwards, bringing construction platform 1 to the same horizontal level as the upper part of the pier concrete. At this point, construction platform 1 assists in pouring the pier concrete. Next, the pier concrete is poured, followed by the installation of the central beam reinforcement on the poured pier concrete foundation, and then the central beam formwork. The central beam is then poured, and after completion, the central beam formwork is removed. Construction platform 1 is then lowered to the lower part of the central beam. Next, the second unfolding plate 8 is flipped, causing the middle of construction platform 1 to unfold, reserving space for the central beam. This allows construction platform 1 to be lifted upwards until it reaches the top of the central beam and above, where it is temporarily fixed to maintain this position. The platform is raised to a horizontal height, and then the drive motor 5 drives the dual-axis lead screw 6 and the moving part 4 to move, thereby retracting the telescopic component 3 until the base 2 is raised to the top of the central beam. It is then fixed with a rigid support. Next, the second pier column formwork is installed on the foundation of the central beam and poured. The second pier column formwork is then removed, and the construction platform 1 is raised to the top of the second pier column. The second unfolding plate 8 is then flipped inward and closed, and the cap beam reinforcement is installed on this foundation. The cap beam formwork is then installed and poured. After it hardens, the cap beam formwork is removed. To facilitate multiple uses of the lifting platform, the first unfolding plate can be flipped downward after the cap beam concrete has hardened. 7. The lifting platform is lifted and dismantled through the reserved holes on the construction platform 1, thereby completing the construction operation of the bridge substructure. When installing the second pier column formwork, the height of the construction platform 1 needs to be temporarily fixed, and the base 2 and telescopic component 3 are lifted upward by the drive motor 5. When performing this operation, the stability of the construction platform 1 fixed by the crane is limited, which may cause the lifting platform to shake. The moving frame 91 can be slid inward and the rotating handle 93 can be rotated so that the bottom of the support frame 92 is at the top of the middle beam, thereby providing multiple support points for the upward movement of the telescopic component 3 and the base 2, which helps to improve the stability of the entire device. Example 2

[0023] Based on Example 1, such as Figure 1 and Figure 4As shown, it also includes an auxiliary propulsion mechanism 10, which includes a mounting frame 101. Two mounting frames 101 are connected to the lower sides of both the front and rear of the construction platform 1. The mounting frames 101 are all Z-shaped structures, and rotating rollers 102 are rotatably connected to the lower part of each mounting frame 101.

[0024] It should be noted that when using the rigid support to fix the base 2, the rigid support can be pushed backward with the help of the rotating roller 102, making it easier to push the rigid support in.

[0025] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A substructure lifting platform for bridge construction, characterized in that, The system includes a construction platform (1), with two bases (2) at its lower part. A drive motor (5) is mounted on the upper left side of each base (2), and two drive motors (5) are also mounted on the lower left side of the construction platform (1). Each drive motor (5) has a dual-axis lead screw (6) connected to its output shaft. The upper dual-axis lead screw (6) is rotatably connected to the construction platform (1), and the lower dual-axis lead screw (6) is rotatably connected to the adjacent base (2). The screw (6) is threadedly connected to the moving parts (4) on both the left and right sides. There are a total of 8 moving parts (4). The four moving parts (4) on the front side are connected to the telescopic components (3), and the four moving parts (4) on the rear side are also connected to the telescopic components (3). The construction platform (1) is rotatably connected to the first unfolding plate (7) on both the front and rear sides. The inner side of the first unfolding plate (7) is rotatably connected to the second unfolding plate (8). The construction platform (1) is provided with support mechanisms (9) on both the left and right sides.

2. A substructure lifting platform for bridge construction according to claim 1, characterized in that, The support mechanism (9) includes a movable frame (91), and the movable frame (91) is slidably connected to both the left and right sides of the construction platform (1). A support frame (92) is rotatably connected to each movable frame (91), and a rotating arm is connected to the upper part of each support frame (92).

3. A substructure lifting platform for bridge construction according to claim 2, characterized in that, It also includes an auxiliary propulsion mechanism (10), which includes a mounting frame (101). The construction platform (1) has two mounting frames (101) connected to its lower front and rear sides. The mounting frames (101) are rotatably connected to a rotating roller (102) at their lower parts.

4. A substructure lifting platform for bridge construction according to claim 1, characterized in that, The construction platform (1) is equipped with guardrails on the rear and upper right sides.

5. A substructure lifting platform for bridge construction according to claim 1, characterized in that, The construction platform (1) has four reserved holes.

6. A substructure lifting platform for bridge construction according to claim 3, characterized in that, All mounting brackets (101) have a Z-shaped structure.

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