A prefabricated part assembling pre-construction platform for tunnel construction

Abstract

The application discloses a prefabricated part assembling pre-construction platform for tunnel construction, and belongs to the technical field of tunnel construction, which comprises a transportation track installed on the top of a tunnel, wherein the transportation track is connected with a construction assembling frame through a construction hoisting part; offset adjusting clamping seats for clamping U-shaped prefabricated parts are arranged on both sides of the construction assembling frame; the offset adjusting clamping seats are clamped on the U-shaped prefabricated parts, and are used for fine adjustment of accurate butt joint of the U-shaped prefabricated parts and pre-installed holes on the tunnel construction surface; and the side walls of the offset adjusting clamping seats are provided with pad height supporting parts for bearing the U-shaped prefabricated parts. The platform integrates hoisting, positioning, leveling and auxiliary installation functions, and can continuously complete all adjustment steps after hoisting in place, thereby avoiding equipment switching and waiting between different processes in the traditional mode, reducing time-consuming operations such as repeated lifting, lowering and manual prying due to inaccurate alignment, shortening the installation period of a single prefabricated part, and significantly improving the assembling efficiency.

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 dispersed, 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 is a typical dispersed, 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-consumingly 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:

[0006] 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 assembly frame through a construction hoisting part, both sides of the construction assembly 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-mounting 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 assembly frame being provided with translation adjustment hoisting controls for hoisting the U-shaped prefabricated part.

[0007] 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 preform, and a positioning pressure control assembly provided at the top of the lifting column and used for positioning the U-shaped preform with the pre-installed hole on the tunnel construction surface.

[0008] 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 an electric push rod located inside the rotating adjustment rod and used for controlling the arc-shaped pad to move horizontally, so as to support the U-shaped preform.

[0009] As a preferred solution, the horizontal adjustment piece includes a translation port opened in the construction group frame, an assembly connecting block slidably arranged in the translation port, a reinforcing bearing sliding block slidably connected to the upper surface of the translation port, and a horizontal electric push rod arranged in the construction group frame and used for controlling the horizontal position of the assembly connecting block.

[0010] As a preferred solution, a steering port is opened in the assembly connecting block, a rotating sector is fixedly arranged on the outer wall of the lifting column, and the rotating sector is located in the steering port and rotatably connected to the inner wall of the steering port through a rotating shaft.

[0011] As a preferred solution, 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 arranged on the upper surface of the assembly connecting block, and a downward spring arranged between adjacent pad rods.

[0012] As a preferred solution, the automatic clamping piece includes a side edge connecting groove opened in the outer wall of the lifting column, and a clamping strip connected to the inner wall of the side edge connecting groove through a torsion shaft.

[0013] As a preferred solution, the telescopic connecting rotating piece includes an inner limiting seat rotatably connected to the bottom of the rotating adjustment rod, and a limiting port opened in the end of the arc-shaped pad and slidably connected to the inner limiting seat.

[0014] As a preferred solution, 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 electric push rod is used for controlling the arc-shaped pad to move horizontally.

[0015] As a preferred solution, 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 preform to adjust the height.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 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.

[0018] 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 automatically compensates for displacement and deflection during adjustment, achieving precise alignment and smooth connection with 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

[0019] Figure 1 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0020] Figure 2 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention. Figure 1 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0021] Figure 3 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0022] Figure 4 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0023] Figure 5 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0024] Figure 6 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0025] Figure 7 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0026] Figure 8 A structure diagram of the pre-construction platform for prefabricated part assembly in a running state is provided for the invention.

[0027] Figure 9A connection relationship structure diagram of a height-raising supporting piece in a prefabricated piece assembling pre-construction platform for tunnel construction is provided.

[0028] In the figure: 1, construction hoisting piece; 2, construction group frame; 3, offset adjustment clamping seat; 4, hoisting column; 5, rotating adjustment rod; 6, arc-shaped cushion block; 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, cushion rod; 15, downward spring; 16, side edge connecting groove; 17, clamping bar; 18, inner limiting seat; 19, pushing port; 20, vertical electric push rod; 21, pushing block; 22, linkage fine adjustment rod. DETAILED DESCRIPTION

[0029] 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, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] 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 a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0031] 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 those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] Embodiment, refer to Figures 1 to 9The utility model provides a prefabricated part assembling pre-construction platform for tunnel construction, which comprises a transportation track installed on the top of a tunnel, wherein the transportation track is a prior art having functions of moving up and down and left and right and front and back, and is used for conveying a U-shaped prefabricated part; further, an electric hoist for moving the offset adjustment clamping seat 3 is arranged on the transportation track, and the offset adjustment clamping seat 3 is provided with a clamping hole matched with the U-shaped prefabricated part; wherein, in the clamping state of the offset adjustment clamping seat 3, the offset adjustment clamping seat 3 can exert a horizontal moving force on the U-shaped prefabricated part through the electric hoist; when the arc-shaped cushion block 6 is adjusted, the offset adjustment clamping seat 3 can be clamped left and right but can move up and down, thereby ensuring the displacement compensation of the offset adjustment clamping seat 3 when the arc-shaped cushion block 6 is adjusted.

[0033] The transportation track is connected with a construction assembly frame 2 through a construction hoisting piece 1; offset adjustment clamping seats 3 for clamping the U-shaped prefabricated part are arranged on both sides of the construction assembly frame 2, the offset adjustment clamping seats 3 are clamped on the U-shaped prefabricated part, and are used for fine adjustment of the accurate butt joint of the U-shaped prefabricated part and a pre-installed hole on the tunnel construction surface; and a cushioning support for bearing the U-shaped prefabricated part is arranged on the side wall of the offset adjustment clamping seat 3.

[0034] It should be noted that the pre-installed holes (bolt holes) for installing the U-shaped prefabricated part are pre-provided on the tunnel construction surface, and the pre-installed holes are also provided on the U-shaped prefabricated part at corresponding positions; when the two groups of pre-installed holes are aligned, the U-shaped prefabricated part can be installed on the tunnel construction surface through bolts.

[0035] Further, an electric hoist for moving the offset adjustment clamping seat 3 is arranged on the transportation track, the electric hoist is used for adjusting the height of the U-shaped prefabricated part, the electric hoist is arranged in the middle, is connected with the offset adjustment clamping seat 3 through a steel wire, and when it is necessary to adjust the height of the U-shaped prefabricated part, the electric hoist can generate a pulling force on one side of the offset adjustment clamping seat 3; under the action of the pulling force, one end of the U-shaped prefabricated part is pulled upward (inward) to adjust the levelness of the U-shaped prefabricated part.

[0036] A translation adjustment hoisting control is arranged at each corner of the construction assembly frame 2 for hoisting the U-shaped prefabricated part, the translation adjustment hoisting control comprises a hoisting column 4 installed on the construction assembly frame 2 through a horizontal adjustment piece; further, the horizontal adjustment piece comprises a translation port 7 provided on the construction assembly frame 2, a connecting block 8 is slidably arranged in the translation port 7, the connecting block 8 is slidably connected with the upper surface of the translation port 7 through a reinforcing bearing sliding block 9, and a horizontal electric push rod 10 for controlling the horizontal adjustment position of the connecting block 8 is arranged in the construction assembly frame 2.

[0037] The horizontal adjusting piece is arranged, which can be controlled separately to adjust the size of the preset hole of the U-shaped preform according to different needs, so as to adapt to the installation of different U-shaped preforms; and the horizontal adjusting piece can be controlled simultaneously to move synchronously, so as to move the U-shaped preform hoisted on the construction group frame 2 in parallel, adjust the corresponding position, and flexibly adjust the installation position according to the position difference between the construction surface and the transportation track.

[0038] Further, the assembly connecting block 8 is provided with a turning port 11, the outer wall of the hoisting column 4 is fixedly provided with a rotating sector 12, the rotating sector 12 is located in the turning port 11, and the rotating sector 12 is rotationally connected with the inner wall of the turning port 11 through a rotating shaft.

[0039] The rotating sector 12 has the advantages that the U-shaped preform can be adjusted by the offset adjusting seat 3 on both sides, the connection is rotated, and the rotation angle of the deflection angle of the U-shaped preform can be compensated.

[0040] The bottom of the hoisting column 4 is provided with an automatic clamping piece clamped in the pre-installed hole of the U-shaped preform, and further, the automatic clamping piece includes a side edge connecting groove 16 provided on the outer wall of the hoisting column 4, and a clamping strip 17 connected with the inner wall of the side edge connecting groove 16 through a torsion shaft, a plurality of clamping strips 17 are in a storage state, located in the side edge connecting groove 16, and the outer diameter size of the hoisting column 4 is consistent, so as to meet the penetration of the pre-installed hole.

[0041] The top of the hoisting column 4 is provided with a positioning pressure control assembly for positioning the U-shaped preform and the pre-installed hole on the tunnel construction surface; further, the positioning pressure control assembly includes a pressure control plate 13 connected with the top of the hoisting column 4 through a turning ball, the turning ball is arranged to meet the rotation of the hoisting column 4, the upper surface of the assembly connecting block 8 is provided with a spacer 14, and a compression spring 15 is arranged between adjacent spacers 14, and the spacer 14 is arranged to ensure that the pressure acts on the spacer 14 when the hoisting column 4 bears the pressure, and the pressure does not directly act on the compression spring 15.

[0042] The height supporting piece includes a rotating adjusting rod 5 rotationally connected to the offset adjusting seat 3, the rotating adjusting rod 5 is connected with an arc-shaped pad 6 through a telescopic connecting rotating piece, the rotating adjusting rod 5 controls the horizontal movement of the arc-shaped pad 6 through a vertical electric push rod 20 located inside, and the supporting height of the U-shaped preform is realized.

[0043] Further, the telescopic connecting rotating piece comprises an inner limiting seat 18 rotationally connected with the bottom of the rotating adjusting rod 5, the end of the arc-shaped pad 6 is provided with a limiting opening matched with the inner limiting seat 18, and the arc-shaped pad 6 is slidably connected with the inner limiting seat 18 through the limiting opening. In this way, the support effect of the arc-shaped pad 6 can be ensured through the inner limiting seat 18, and the arc-shaped pad 6 can be controlled to move horizontally through the linkage fine adjustment rod 22, so that the support position of the U-shaped preformed member can be changed, and after the support position is changed, the U-shaped preformed member and the U-shaped preformed member that has been installed can be kept in a horizontal state, and automatic leveling before installation of the U-shaped preformed member can be realized.

[0044] The rotating adjusting rod 5 is provided with a pushing opening 19, a vertical electric push rod 20 is arranged in the pushing opening 19, the output end of the vertical electric push rod 20 is connected with a pushing block 21, the pushing block 21 is rotationally connected with the arc-shaped pad 6 through a linkage fine adjustment rod 22, and the arc-shaped pad 6 is controlled to move horizontally.

[0045] When the U-shaped preformed member is assembled in the tunnel, the construction frame 2 is used for hoisting the U-shaped preformed member. Before hoisting, the position of the hoisting column 4 is adjusted according to the size of the U-shaped preformed member, so that the hoisting column 4 can accurately pass through the preset hole in the U-shaped preformed member. In the process of inserting the hoisting column 4 into the preset hole, the automatic clamping piece is automatically folded under the blocking force of the preset hole. At this time, the automatic clamping piece can be inserted into the preset hole. When the hoisting column 4 passes through, under the action of the torsion shaft, the plurality of clamping strips 17 are automatically unfolded outward. At this time, the hoisting column 4 with the unfolded clamping strips 17 can realize the hoisting of the U-shaped preformed member.

[0046] The U-shaped preformed member in the hoisting process is transported to the installation position through the transportation track. The U-shaped preformed member is moved downward at the installation position, and then the U-shaped preformed member is adjusted. During the adjustment process, the horizontal electric push rod 10 is controlled at the same time, so that the U-shaped preformed member hoisted on the construction frame 2 is moved in parallel, the preset hole in the U-shaped preformed member is aligned with the preset hole on the tunnel construction surface, and the position corresponding adjustment is completed.

[0047] After the position corresponding adjustment is completed, the levelness of the two ends of the U-shaped preformed member is adjusted to ensure that the two ends of the U-shaped preformed member are in a horizontal state and are aligned with the U-shaped preformed member installed before. When the levelness is adjusted, when the height of one side of the U-shaped preformed member is low, the electric hoist at this side is driven to generate a pulling force on the offset adjustment clamping seat 3. Under the action of the pulling force, the U-shaped preformed member is pulled to move upward at one end. When the height of one side of the U-shaped preformed member is high, the other side will gradually become low, so that the horizontal adjustment of the U-shaped preformed member is realized.

[0048] After the adjustment is completed, at this time, the U-shaped preform is moved downward, and when the U-shaped preform is moved downward, the U-shaped preform will be in contact with the tunnel construction surface, at this time, the unevenness of the tunnel construction surface will cause the flatness of the U-shaped preform to change, at this time, the vertical electric push rod 20 can drive the push block 21 to move, the position of the arc-shaped pad 6 is adjusted, the height of the pad at both ends of the U-shaped preform is changed, the unevenness of the construction surface is effectively supplemented, and the subsequent continuous construction is facilitated.

[0049] When the U-shaped preform is placed, the construction group frame 2 is continuously moved downward, at this time, the hoisting column 4 in the pre-set hole in the U-shaped preform continuously moves downward and is inserted into the pre-set hole in the bottom tunnel construction surface, at this time, the pre-set hole below will again extrude and shrink the clamping bar 17 arranged at the bottom of the hoisting column 4, at this time, the hoisting column 4 can be freely pulled out upward, the hoisting column 4 is automatically removed, and the pre-assembly construction is facilitated.

[0050] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A pre-construction platform for assembling precast members for tunnel construction, comprising a transport track installed on the top of a tunnel, the transport track being used to transport U-shaped precast members, characterized in that, The construction assembly frame (2) is provided with offset adjustment clamping seats (3) for clamping U-shaped preformed members on both sides, which are used for fine adjustment of the accurate butt joint of the U-shaped preformed members and the pre-installed holes on the tunnel construction surface, and the side walls of the offset adjustment clamping seats (3) are provided with heightening supporting members for bearing the U-shaped preformed members. The horizontal adjustment member includes a translation port (7) opened in the construction assembly frame (2), and an assembly connecting block (8) is slidably arranged in the translation port (7). The heightening supporting member includes a rotating adjusting rod (5) rotatably connected to the offset adjustment clamping seat (3), and the rotating adjusting rod (5) is connected to an arc-shaped pad (6) through a telescopic connecting rotating member. The horizontal adjustment member includes a translation port (7) opened in the construction assembly frame (2), and an assembly connecting block (8) is slidably arranged in the translation port (7). The assembly connecting block (8) is provided with a steering port (11), and a rotating sector member (12) is fixedly arranged on the outer side wall of the hoisting column (4). The positioning pressure control assembly includes a pressure control plate (13) connected to the top of the hoisting column (4) through a steering ball. The automatic clamping member includes a side edge connecting groove (16) opened on the outer side wall of the hoisting column (4), and a clamping strip (17) is connected to the inner wall of the side edge connecting groove (16) through a torsion shaft. The telescopic connecting rotating member includes an inner limiting seat (18) rotatably connected to the bottom of the rotating adjusting rod (5). The rotating adjusting rod (5) is provided with a pushing port (19), and the vertical electric push rod (20) is arranged in the pushing port (19) and connected to a pushing block (21) at the output end. The pushing block (21) is rotatably connected to the arc-shaped pad (6) through a linkage fine adjustment rod (22) to control the horizontal movement of the arc-shaped pad (6).

2. The pre-construction platform for assembling precast elements for tunnel construction according to claim 1, characterized in that The transport track is provided with an electric hoist for moving a control offset adjusting holder (3), and the electric hoist is used for pulling a U-shaped preform to adjust the height.

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