Pre-construction platform for assembling prefabricated parts for tunnel construction

Abstract

The invention discloses a pre-construction platform for assembling prefabricated parts for tunnel construction, and belongs to the technical field of tunnel construction, the pre-construction platform comprises a transportation track mounted at the top of a tunnel, the transportation track is connected with a construction assembly frame through a construction hoisting part, and the two sides of the construction assembly frame are each provided with an offset adjusting clamping seat connected with a U-shaped pre-construction part in a clamped mode; the offset adjusting clamping seat is clamped on the U-shaped pre-component and is used for finely adjusting the accurate butt joint of the U-shaped pre-component and a pre-assembling hole in a tunnel construction surface, and the side wall of the offset adjusting clamping seat is provided with a heightening supporting piece for bearing the U-shaped pre-component. The platform provided by the invention integrates the functions of hoisting, positioning, leveling and auxiliary mounting, all adjustment steps can be continuously completed after hoisting in place, equipment switching and waiting among different working procedures in a traditional mode are avoided, time-consuming operations such as repeated hoisting, laying down and manual prying caused by inaccurate alignment are reduced through the precise multi-directional adjustment capability, and the working efficiency is improved. The installation period of a single prefabricated part is shortened, and the assembling efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tunnel construction, in particular to a prefabricated part assembling pre-construction platform for tunnel construction. BACKGROUND

[0002] The prefabricated part assembling pre-construction platform for tunnel construction is essentially a key solution to upgrade the traditional scattered, high-risk, and low-efficiency manual assembling operation to centralized, safe, efficient, and precise mechanized and process operation. It is an important symbol to measure the mechanization level and construction capacity of a tunnel project, and plays an irreplaceable role in ensuring construction safety and improving engineering quality and progress.

[0003] The traditional construction method mainly relies on manual operation combined with general hoisting equipment for carrying, positioning, and fixing, which belongs to a typical scattered, high-risk, and labor-intensive operation. In actual operation, due to the certain unevenness of the tunnel excavation surface and the limited positioning accuracy of the mobile equipment, after the prefabricated part is hoisted to the construction surface, the construction personnel often need to repeatedly and time-consuming manually adjust the position, elevation, and levelness, so as to realize the precise positioning of the prefabricated part upper pre-hole and the tunnel structure surface pre-buried hole. This process not only has low construction efficiency and high labor intensity, but also has safety risks under high-altitude operation and heavy lifting, which has become a key bottleneck restricting the improvement of the mechanization and assembly level of tunnel construction. Based on this, the present application provides a prefabricated part assembling pre-construction platform for tunnel construction. SUMMARY

[0004] The present application aims to solve the problem that the prior art has low construction efficiency, high labor intensity, and safety risks under high-altitude operation and heavy lifting, which has become a key bottleneck restricting the improvement of the mechanization and assembly level of tunnel construction, and provides a prefabricated part assembling pre-construction platform for tunnel construction.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A prefabricated part assembling pre-construction platform for tunnel construction, comprising a transportation track installed on the top of a tunnel, the transportation track being used for conveying a U-shaped prefabricated part, the transportation track being connected with a construction assembling frame through a construction hoisting part, both sides of the construction assembling frame being provided with offset adjustment clamping seats clamped with the U-shaped prefabricated part, the offset adjustment clamping seats being clamped on the U-shaped prefabricated part and used for fine-tuning the precise butt joint of the U-shaped prefabricated part and the pre-assembly hole on the tunnel construction surface, the side wall of the offset adjustment clamping seat being provided with a height-raising support part for bearing the U-shaped prefabricated part, and the four corners of the construction assembling frame being provided with translation adjustment hoisting controls for hoisting the U-shaped prefabricated part. The translation adjustment lifting control includes a lifting column mounted on the construction group frame through a horizontal adjustment piece, an automatic clamping piece provided at the bottom of the lifting column and clamped in a pre-installed hole of a U-shaped pre-member, and a positioning pressure control assembly provided at the top of the lifting column and used for positioning the U-shaped pre-member with the pre-installed hole on the tunnel construction surface. The height supporting piece includes a rotating adjustment rod rotatably connected to the offset adjustment clamping seat, an arc-shaped pad connected to the rotating adjustment rod through a telescopic connecting rotating piece, and the arc-shaped pad is controlled to move horizontally by the electric push rod located inside, so that the supporting height of the U-shaped pre-member is realized.

[0006] As a preferred scheme, the horizontal adjustment piece includes a translation port opened in the construction group frame, an assembly connecting block slidably arranged in the translation port, the assembly connecting block is slidably connected to the upper surface of the translation port through a reinforced bearing sliding block, and a horizontal electric push rod is arranged in the construction group frame and used for controlling the horizontal adjustment position of the assembly connecting block.

[0007] As a preferred scheme, a steering port is opened in the assembly connecting block, a rotating sector is fixedly arranged on the outer wall of the lifting column, the rotating sector is located in the steering port, and the rotating sector is rotatably connected to the inner wall of the steering port through a rotating shaft.

[0008] As a preferred scheme, the positioning pressure control assembly includes a pressure control plate connected to the top of the lifting column through a steering ball, a pad rod is arranged on the upper surface of the assembly connecting block, and a pressing spring is arranged between adjacent pad rods.

[0009] As a preferred scheme, the automatic clamping piece includes a side edge connecting groove opened in the outer wall of the lifting column, and a clamping strip is connected to the inner wall of the side edge connecting groove through a torsion shaft.

[0010] As a preferred scheme, the telescopic connecting rotating piece includes an inner limiting seat rotatably connected to the bottom of the rotating adjustment rod, and a limiting port matched with the inner limiting seat is opened at the end of the arc-shaped pad and slidably connected to the inner limiting seat.

[0011] As a preferred scheme, a pushing port is opened in the rotating adjustment rod, the electric push rod is arranged in the pushing port, a pushing block is connected to the output end of the electric push rod, the pushing block is rotatably connected to the arc-shaped pad through a linkage fine adjustment rod, and the arc-shaped pad is controlled to move horizontally.

[0012] As a preferred scheme, an electric hoist is arranged on the transportation track and used for controlling the movement of the offset adjustment clamping seat, and the electric hoist is used for pulling the U-shaped pre-member to adjust the height.

[0013] Compared with the prior art, the present application has the following beneficial effects: 1.The platform integrates lifting, positioning, leveling, and auxiliary installation functions, and can continuously complete all adjustment steps after lifting into place, avoiding equipment switching and waiting between different processes in the traditional way. The precise multi-directional adjustment capability reduces the time-consuming operations such as repeated lifting, lowering, and manual prying due to inaccurate alignment, shortens the installation period of individual prefabricated parts, and significantly improves the assembly efficiency.

[0014] 2.The invention compensates for the unevenness of the tunnel construction surface through arc-shaped pads to ensure the levelness of the prefabricated part installation reference surface. The design of rotating sector pieces can automatically compensate for displacement and deflection during adjustment, achieving precise alignment and smooth connection with the installed components. The lifting column can be directly inserted into the pre-installed hole of the prefabricated part and the tunnel surface, and combined with the translation adjustment function to achieve fast and accurate hole alignment between bolt holes, greatly improving the success rate of installation and connection. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 2 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 1 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 3 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 4 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 5 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 6 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 7 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 8 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided. Figure 9 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided.

[0016] In the figure: 1, construction hoisting part; 2, construction group frame; 3, offset adjustment clamping base; 4, hoisting column; 5, rotating adjustment rod; 6, arc-shaped pad; 7, translation port; 8, assembly connecting block; 9, reinforcing bearing sliding block; 10, horizontal electric push rod; 11, steering port; 12, rotating sector; 13, constant pressure control plate; 14, pad rod; 15, downward spring; 16, side edge connecting groove; 17, clamping stop bar; 18, inner limiting seat; 19, pushing port; 20, vertical electric push rod; 21, pushing block; 22, linkage fine adjustment rod. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, and not all embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0018] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For a person of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] Embodiment, refer to Figures 1 to 9A prefabrication platform for assembling precast components in tunnel construction includes a transport track installed on the top of the tunnel. The transport track is existing technology and has the function of moving up, down, left, right, forward, and backward. The transport track is used to transport U-shaped precast components. Further, an electric hoist is installed on the transport track to control the movement of the offset adjustment bracket 3. The bottom of the offset adjustment bracket 3 has a locking slot adapted to the U-shaped precast component. In the locked state, the offset adjustment bracket 3 has the effect of applying a horizontal moving force to the U-shaped precast component through the electric hoist. When the arc-shaped pad 6 is adjusted, the offset adjustment bracket 3 has a left and right locking function, but can move up and down, thereby ensuring that the offset adjustment bracket 3 achieves displacement compensation for up and down movement when the arc-shaped pad 6 is adjusted.

[0021] The transport track is connected to the construction frame 2 via the construction hoisting component 1; both sides of the construction frame 2 are equipped with offset adjustment brackets 3 that engage with the U-shaped pre-components. The offset adjustment brackets 3 are engaged with the U-shaped pre-components and are used to fine-tune the precise alignment between the U-shaped pre-components and the pre-installation holes on the tunnel construction surface. The side walls of the offset adjustment brackets 3 are equipped with raised support components to support the U-shaped pre-components. It should be noted that the tunnel construction surface will have pre-set mounting holes (bolt holes) for installing U-shaped prefabricated components. The U-shaped prefabricated components also have corresponding mounting holes. When the two sets of mounting holes are aligned, the U-shaped prefabricated components can be installed on the tunnel construction surface by bolts.

[0022] Furthermore, an electric hoist is installed on the transport track to control the movement of the offset adjustment bracket 3. The electric hoist is used to pull the U-shaped pre-component to adjust its height. The electric hoist is located in the middle and is connected to the offset adjustment bracket 3 by tilting the steel wire. When it is necessary to adjust the height of the U-shaped pre-component, the electric hoist can generate a pulling force on the offset adjustment bracket 3 on one side. Under the action of the pulling force, the U-shaped pre-component will be pulled to tilt one end upward (inward), thereby achieving the adjustment of the level of the U-shaped pre-component. At each of the four corners of the construction frame 2, there are translation adjustment lifting control devices for hoisting U-shaped prefabricated components. The translation adjustment lifting control devices include hoisting columns 4 installed on the construction frame 2 via horizontal adjustment components. Further, the horizontal adjustment components include translation openings 7 opened on the construction frame 2. Assembly connecting blocks 8 are slidably installed in the translation openings 7. The assembly connecting blocks 8 are slidably connected to the upper surface of the translation openings 7 via reinforcing bearing sliders 9. A horizontal electric push rod 10 is installed inside the construction frame 2 to control the horizontal adjustment position of the assembly connecting blocks 8. The horizontal electric push rod 10 is installed inside the construction frame 2.

[0023] The use of horizontal adjustment components has two advantages: firstly, individual control allows for the adjustment of the dimensions of the preset holes of the U-shaped pre-constructed components according to different needs, thus adapting to the installation of different U-shaped pre-constructed components; secondly, simultaneous control allows for synchronous movement, enabling the parallel movement of the U-shaped pre-constructed components hoisted on the construction frame 2, thereby adjusting their corresponding positions and flexibly adjusting the installation position based on the positional difference between the construction surface and the transport track.

[0024] Furthermore, a turning port 11 is provided on the assembly connecting block 8, and a rotating sector 12 is fixedly provided on the outer wall of the hoisting column 4. The rotating sector 12 is located inside the turning port 11 and is rotatably connected to the inner wall of the turning port 11 through a rotating shaft.

[0025] The advantage of using the aforementioned rotating sector component 12 is that it enables the rotational connection when adjusting the U-shaped pre-component using the offset adjustment brackets 3 on both sides, and it can compensate for the rotation angle of the U-shaped pre-component's deflection angle.

[0026] The bottom of the hoisting column 4 is provided with an automatic locking device that engages with the pre-installation hole of the U-shaped pre-component. Furthermore, the automatic locking device includes a side connecting groove 16 opened on the outer side wall of the hoisting column 4. The inner wall of the side connecting groove 16 is connected to a locking strip 17 via a torsion shaft. When the multiple locking strips 17 are in the retracted state, they are located in the side connecting groove 16 and are consistent with the outer diameter of the hoisting column 4, thereby satisfying the requirement of following the hoisting column 4 through the pre-installation hole.

[0027] A positioning and pressure control assembly is provided at the top of the hoisting column 4 for positioning the U-shaped pre-component with the pre-installed hole on the tunnel construction surface. Further, the positioning and pressure control assembly includes a constant pressure control plate 13 connected to the top of the hoisting column 4 via a steering ball. The steering ball is designed to allow the hoisting column 4 to rotate. A pad rod 14 is provided on the upper surface of the assembly connecting block 8, and a downward pressure spring 15 is provided between adjacent pad rods 14. The pad rods 14 are designed to ensure that when bearing pressure through the hoisting column 4, the pressure will act on the pad rod 14 and will not act directly on the downward pressure spring 15.

[0028] The heightening support includes a rotating adjustment rod 5 rotatably connected to the offset adjustment bracket 3. The rotating adjustment rod 5 is connected to an arc-shaped pad 6 via a telescopic rotating component. The rotating adjustment rod 5 controls the arc-shaped pad 6 to move horizontally via a vertical electric push rod 20 located inside, thereby achieving the support height for the U-shaped precast component.

[0029] Furthermore, the telescopic connecting rotating component includes an inner limiting seat 18 that is rotatably connected to the bottom of the rotating adjusting rod 5. The end of the arc-shaped pad 6 is provided with a limiting port that is adapted to the inner limiting seat 18. The limiting port is slidably connected to the inner limiting seat 18. This configuration can ensure the support effect of the arc-shaped pad 6 through the inner limiting seat 18, and can also control the horizontal movement of the arc-shaped pad 6 through the linkage fine-tuning rod 22 to change the support position of the U-shaped pre-component. After the support position is changed, the U-shaped pre-component and the installed U-shaped pre-component can be kept in a horizontal state, realizing automatic leveling of the U-shaped pre-component before installation.

[0030] The rotating adjustment rod 5 has a push port 19, and the vertical electric push rod 20 is set in the push port 19. Its output end is connected to the push block 21. The push block 21 is rotatably connected to the arc-shaped pad 6 through the linkage fine adjustment rod 22, which controls the arc-shaped pad 6 to move horizontally.

[0031] In this invention, when assembling U-shaped prefabricated components in a tunnel, a construction frame 2 is used to hoist the U-shaped prefabricated components. Before hoisting, the position of the hoisting column 4 is adjusted according to the size of the U-shaped prefabricated components so that the hoisting column 4 can accurately pass through the preset hole on the U-shaped prefabricated components. During the process of inserting the hoisting column 4 into the preset hole, the automatic locking component will automatically retract under the blocking force of the preset hole. At this time, the automatic locking component can be inserted into the preset hole. After the hoisting column 4 passes through, under the action of the torsion shaft, multiple locking strips 17 will automatically unfold outward. At this time, during hoisting, the hoisting column 4 with the locking strips 17 unfolded can realize the hoisting of the U-shaped prefabricated components. The U-shaped prefabricated component is transported forward to the installation position via a transport track. The U-shaped prefabricated component is then moved downward above the installation position and adjusted. During the adjustment process, the horizontal electric push rod 10 is controlled simultaneously to move the U-shaped prefabricated component hoisted on the construction frame 2 in parallel, so as to align the preset holes on the U-shaped prefabricated component with the preset holes on the tunnel construction surface, thus completing the positional adjustment. After completing the positional adjustment, the level of both ends of the U-shaped pre-component is adjusted to ensure that both ends of the U-shaped pre-component are horizontal and aligned with the previously installed U-shaped pre-component. When adjusting the level, if one side of the U-shaped pre-component is lower, the electric hoist located on that side is driven to generate a pulling force on the offset adjustment bracket 3. Under the action of the pulling force, one end of the U-shaped pre-component will be pulled upward. As the height of one side of the U-shaped pre-component increases, the other side will gradually decrease, thereby achieving the level adjustment of the U-shaped pre-component. After the adjustment is completed, the U-shaped precast component is moved downward. When the U-shaped precast component moves downward, it will come into contact with the tunnel construction surface. At this time, the unevenness of the tunnel construction surface will cause the flatness of the U-shaped precast component to change. At this time, the vertical electric push rod 20 can drive the push block 21 to move, thereby adjusting the position of the arc-shaped pad 6 and changing the pad height at both ends of the U-shaped precast component, so as to effectively supplement the unevenness of the construction surface and facilitate subsequent continuous construction. When the U-shaped pre-component is placed, the construction frame 2 continues to move down. At this time, the hoisting column 4, which is in the preset hole inside the U-shaped pre-component, will continue to move down and insert into the preset hole at the bottom of the tunnel construction face. At this time, the preset hole at the bottom will squeeze and shrink the clamping strip 17 set at the bottom of the hoisting column 4 again. At this time, the hoisting column 4 can be lifted up freely to realize the automatic removal of the hoisting column 4, which facilitates the pre-assembly construction.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A prefabrication platform for assembling precast components in tunnel construction, comprising a transport track installed on the top of the tunnel, the transport track being used to transport U-shaped precast components, characterized in that, The transport track is connected to the construction frame (2) via the construction hoisting component (1). The construction frame (2) is provided with offset adjustment brackets (3) on both sides that engage with the U-shaped pre-component. The offset adjustment brackets (3) are engaged with the U-shaped pre-component and are used to fine-tune the precise connection between the U-shaped pre-component and the pre-installation hole on the tunnel construction surface. The side wall of the offset adjustment bracket (3) is provided with a support for bearing the U-shaped pre-component. The four corners of the construction frame (2) are provided with translation adjustment hoisting control components for hoisting the U-shaped pre-component. The translation adjustment hoisting control includes a hoisting column (4) installed on the construction frame (2) by a horizontal adjustment component. The bottom of the hoisting column (4) is provided with an automatic locking component that is locked into the pre-installation hole of the U-shaped pre-component. The top of the hoisting column (4) is provided with a positioning pressure control component for positioning the U-shaped pre-component with the pre-installation hole on the tunnel construction surface. The heightening support includes a rotating adjustment rod (5) rotatably connected to the offset adjustment seat (3). The rotating adjustment rod (5) is connected to an arc-shaped pad (6) via a telescopic rotating component. The rotating adjustment rod (5) controls the arc-shaped pad (6) to move horizontally via a vertical electric push rod (20) located inside, thereby achieving the support height of the U-shaped preform.

2. The pre-construction platform for assembling prefabricated components for tunnel construction according to claim 1, characterized in that, The horizontal adjustment component includes a translation port (7) opened on the construction frame (2), an assembly connection block (8) is slidably arranged in the translation port (7), the assembly connection block (8) is slidably connected to the upper surface of the translation port (7) through a reinforcing bearing slider (9), and a horizontal electric push rod (10) is provided in the construction frame (2) to control the horizontal adjustment position of the assembly connection block (8).

3. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 2, characterized in that, The assembly connecting block (8) has a turning port (11), and a rotating fan-shaped component (12) is fixedly installed on the outer wall of the hoisting column (4). The rotating fan-shaped component (12) is located inside the turning port (11) and is rotatably connected to the inner wall of the turning port (11) through a rotating shaft.

4. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 3, characterized in that, The positioning pressure control assembly includes a constant pressure control plate (13) connected to the top of the hoisting column (4) via a steering ball. The upper surface of the assembly connecting block (8) is provided with pad rods (14), and a downward pressure spring (15) is provided between adjacent pad rods (14).

5. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 1, characterized in that, The automatic locking component includes a side connecting groove (16) opened on the outer side wall of the hoisting column (4), and the inner wall of the side connecting groove (16) is connected to a locking strip (17) by a torsion shaft.

6. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 1, characterized in that, The telescopic connecting rotating component includes an inner limiting seat (18) that is rotatably connected to the bottom of the rotating adjusting rod (5). The end of the arc-shaped pad (6) is provided with a limiting port that is adapted to the inner limiting seat (18), and is slidably connected to the inner limiting seat (18) through the limiting port.

7. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 6, characterized in that, The rotating adjustment rod (5) has a push port (19), and the vertical electric push rod (20) is set in the push port (19). Its output end is connected to a push block (21). The push block (21) is rotatably connected to the arc-shaped pad (6) through the linkage fine adjustment rod (22) to control the arc-shaped pad (6) to move horizontally.

8. A pre-construction platform for assembling prefabricated components for tunnel construction according to claim 1, characterized in that, The transport track is equipped with an electric hoist that controls the movement of the offset adjustment bracket (3), and the electric hoist is used to pull the U-shaped pre-component to adjust its height.

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