Modularized tunnel lining trolley portal frame

Abstract

The utility model discloses a modularized tunnel lining trolley portal frame which is of a double-layer portal frame structure and comprises an upper layer portal frame composed of an upper cross beam and an upper stand column and a lower portal frame layer composed of a lower cross beam and a lower stand column, and the upper cross beam, the lower cross beam and the upper stand column are each of a splicing structure formed by splicing a plurality of sections of splicing modules. The lower stand column is of an integral structure, and the upper cross beam and the upper stand column, the upper stand column and the lower cross beam, and the lower cross beam and the lower stand column are connected and fixed through high-strength bolts. According to the utility model, the upper cross beam, the lower cross beam and the upper upright post are optimized into an assembled structure formed by assembling the assembling modules, and the lower upright post is reserved into an integral structure, so that the structural stability of the trolley portal frame is ensured, the bearing performance of the trolley portal frame is ensured, and the trolley portal frame is changed into a modularized variable-cross-section tunnel lining trolley portal frame; during construction of tunnels with different cross sections, different numbers of splicing modules can be adopted for assembling and connecting to form portal structures with different sizes so as to meet the construction requirements of the tunnels with the variable cross sections.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lining trolley equipment, in particular to a modular tunnel lining trolley portal frame. Background Art

[0002] With the rapid development of the transportation industry, lining construction of excavated tunnels is increasingly required in railway, highway, and underground tunnel construction. Currently, tunnel lining construction is primarily performed using tunnel lining trolleys. In large- and multi-section tunnel projects, fully hydraulic, automated lining trolleys with varying cross-sections are often used. These trolleys feature a single portal, integral steel formwork, and hydraulic cylinder formwork. During construction, they are supported by screw jacks and automatically moved by electric reducers or hydraulic cylinders. Concrete is poured entirely using concrete pump trucks. When using fully hydraulic, automated lining trolleys for lining construction, different sizes and specifications are required to meet the needs of different tunnel sections. This means that as many lining trolleys of varying specifications are required as the number of cross-sections in the tunnel project increases, and multiple lining trolleys must be assembled and installed separately. This inevitably results in significant waste of manpower, material, and financial resources, directly impacting the overall project progress. Utility Model Content

[0003] The utility model aims to provide a modular tunnel lining trolley portal frame to solve the technical problems described in the background technology.

[0004] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0005] A modular tunnel lining trolley gantry is a double-layer gantry structure, including an upper gantry consisting of an upper crossbeam and an upper column, and a lower gantry consisting of a lower crossbeam and a lower column. The upper crossbeam, lower crossbeam and upper column are all spliced ​​structures composed of several sections of assembly modules assembled by high-strength bolts. The lower column is an integral structure in the form of a whole root, and the upper crossbeam and upper column, the upper column and lower crossbeam, and the lower crossbeam and lower column are all connected and fixed by high-strength bolts.

[0006] Preferably, the assembly module includes two types: a standard section with a length of 1.0 m and an adjustment section with a length of 0.5 m.

[0007] Preferably, the adjustment section is provided at the middle portion of the corresponding splicing structure of the upper crossbeam, the lower crossbeam or the upper column.

[0008] Preferably, the assembly module includes two channel steel rib beams, the webs of the two channel steel rib beams are opposite and spaced apart, the ends of the two channel steel rib beams are welded and fixed by module connecting flange plates, the module connecting flange plates are welded and fixed in the middle of the wing plate sides of the two channel steel rib beams, the diagonal brace connecting flange plates are welded and fixed in the middle of the web plates of the two channel steel rib beams, and bolt holes are provided on the module connecting flange plates and the diagonal brace connecting flange plates.

[0009] Preferably, an operating hand hole is provided on the module connection flange plate, and the operating hand hole is provided corresponding to the gap between the two channel steel rib beams.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention optimizes the structure of the conventional trolley gantry, optimizes the single-layer gantry structure into a double-layer gantry structure, and on this basis, optimizes the upper crossbeam, lower crossbeam and upper column into an assembled structure composed of assembled modules while retaining the lower column as an integral structure in the form of a whole root, which not only ensures the structural stability of the trolley gantry and its load-bearing performance, but also turns it into a modular variable-section tunnel lining trolley gantry. Different numbers of assembly modules can be used in the construction of tunnels with different cross-sections to assemble and connect to form gantry structures of different sizes to meet the requirements of variable-section tunnel construction, realize standardization and modularization in engineering, can be conveniently and flexibly disassembled and assembled, and used multiple times, greatly improving the reuse rate, thereby effectively solving the shortcomings of the prior art such as poor adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or other aspects and advantages of the present invention will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. These drawings are only illustrative and do not limit the present invention, wherein:

[0012] Figure 1 This is a schematic cross-sectional structure diagram of a modular tunnel lining trolley involved in the present utility model;

[0013] Figure 2 This is a schematic diagram of the longitudinal structure of a modular tunnel lining trolley involved in the present utility model;

[0014] Figure 3 This is a structural schematic diagram of a modular tunnel lining trolley gantry involved in the utility model;

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the assembly module involved in the present utility model;

[0016] Figure 5 This is a schematic diagram of the end structure of the assembly module involved in the present utility model;

[0017] Figure 6This is a structural diagram of the assembly module involved in the present invention on one side of the web of the channel steel rib beam;

[0018] Figure 7 This is a structural schematic diagram of the assembly module involved in the present invention on one side of the channel steel rib beam wing plate.

[0019] Figure numerals: 1. Upper crossbeam; 2. Lower crossbeam; 3. Upper column; 4. Lower column; 5. Assembling module; 501. Channel steel rib beam; 502. Module connecting flange plate; 503. Diagonal brace connecting flange plate; 504. Bolt hole; 505. Operating hand hole; 506. Strengthening rib plate; 6. Reinforced diagonal brace; 7. Reinforced vertical brace; 8. Reinforced horizontal brace. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of a modular tunnel lining trolley portal frame of the present invention will be described with reference to the accompanying drawings. The embodiments described herein are specific embodiments of the present invention, used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the implementation methods and scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and description of this application, including technical solutions that adopt any obvious replacements and modifications to the embodiments described herein.

[0021] In the description of the present invention, it should be noted that the terms "front," "back," "left," "right," "top," "bottom," "upper," "lower," "inner," "outer," "horizontal," "vertical," "upright," and "oblique" and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The accompanying drawings in this specification are schematic diagrams that assist in illustrating the concepts of the present invention and schematically illustrate the shapes of the various components and their interrelationships. Please note that to clearly illustrate the structures of the various components of the embodiments of the present invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0023] The following describes the principles and features of the present invention in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. Figure 1-7 , the preferred embodiments of the present invention are further described in detail:

[0024] like Figure 1-3 As shown, the utility model preferably adopts a modular tunnel lining trolley portal frame, which is a double-layer portal frame structure, including an upper portal frame composed of an upper crossbeam 1 and an upper column 3, and a lower portal frame layer composed of a lower crossbeam 2 and a lower column 4. The upper crossbeam 1, the lower crossbeam 2 and the upper column 3 are all spliced ​​structures formed by sequentially connecting a plurality of assembly modules 5 in series and assembled by high-strength bolts. The lower column 4 is an integral structure in the form of a whole root, and the upper crossbeam 1 and the upper column 3, the upper column 3 and the lower crossbeam 2, and the lower crossbeam 2 and the lower column 4 are all connected and fixed by high-strength bolts.

[0025] The lining trolley of the double-layer gantry structure can better meet the needs of large-section tunnel lining construction. Moreover, the modular variable-section tunnel lining trolley gantry can adopt different numbers of assembly modules 5 for assembly and connection to form gantry structures of different sizes in the construction of tunnels with different sections to meet the requirements of variable-section tunnel construction. While the gantry is modularized, standardized and optimized, in order to ensure the integrity of the gantry structure, it is advisable to add a reinforcement vertical support 7 in the middle of the upper gantry. The reinforcement vertical support 7 adopts the structure of I-beam, and the top and bottom ends of the reinforcement vertical support 7 are aligned. It should be fixed to the assembly module 5 in the middle of the upper crossbeam 1 and the lower crossbeam 1 by high-strength bolts, and further add channel steel reinforcement diagonal braces 6 between the reinforcement vertical brace 7 and the upper crossbeam 1, the reinforcement vertical brace 7 and the lower crossbeam 2, the upper crossbeam 1 and the upper column 3, the upper column 3 and the lower crossbeam 2, and the lower crossbeam 2 and the lower column 4. The ends of the reinforcement diagonal braces 6 are also fixed by high-strength bolts. Since the reinforcement diagonal brace 6 between the lower column 4 and the lower crossbeam 2 is long, a channel steel reinforcement horizontal brace 8 can be further added between the reinforcement diagonal brace 6 and the lower column 4 for reinforcement;

[0026] In order to ensure the structural stability of the modular assembly form of the trolley gantry, the assembly module 5 itself must have sufficient structural strength. For this purpose, the assembly module 5 is designed as follows Figure 4-7 The structural form shown, specifically, the assembly module 5 includes two channel steel rib beams 501, the webs of the two channel steel rib beams 501 are opposite and spaced apart, the ends of the two channel steel rib beams 501 are welded and fixed by module connection flange plates 502, the module connection flange plates 502 are welded and fixed in the middle of the wing plate sides of the two channel steel rib beams 501, the diagonal brace connection flange plates 503 are welded and fixed in the middle of the web plate sides of the two channel steel rib beams 501, and bolt holes 504 are provided on the module connection flange plates 502 and the diagonal brace connection flange plates 503. Of course, in order to improve the structural integrity of the assembly module 5, the module connection flange plates 502 and the web plates of the channel steel rib beams 501, the web plates of the two channel steel rib beams 502, and the diagonal brace connection flange plates 503 and the web plates of the channel steel rib beams 501 are reinforced by welding strengthening ribs 506.

[0027] The assembly module 5 of the above-mentioned structural form is designed with consideration given to both design strength and assembly convenience. Sufficient operating space is reserved at each bolt hole 504 of the module connection flange plate 502 and the diagonal brace connection flange plate 503. Since a large number of high-strength bolts need to be passed through the module connection flange plate 502, in order to further facilitate the installation of high-strength bolts, two groups of bolt holes 504 should be simultaneously reserved on the module connection flange plate 502 as pin shaft mounting holes, and an operating hand hole 505 should be opened in the middle of the module connection flange plate 502. The operating hand hole 505 should be opened corresponding to the gap between the two channel steel rib beams 501. During the assembly operation, two pin shafts are first passed through to preliminarily fix the assembly module 5, and then the threading operation of each high-strength bolt is carried out after the assembly module 5 is aligned with the bolt holes 504 on the module connection flange plate 502.

[0028] In order to improve the adaptability of the trolley gantry corresponding to this application, the assembly module 5 should be set to two models: a standard section with a length of 1.0m and an adjustment section with a length of 0.5m. The two length models of assembly modules 5 are used in combination on site to better meet the on-site construction requirements. Of course, when an adjustment section is provided (usually only one is required in a splicing structure), the shorter adjustment section needs to be provided in the middle position of the splicing structure corresponding to the upper crossbeam 1, the lower crossbeam 2 or the upper column 3 to make the trolley gantry structure after assembly better symmetrical, so that the two sides of the gantry are symmetrically stressed, avoiding uneven stress in the gantry structure.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A modular tunnel lining trolley portal frame, characterized in that: The invention relates to a double-layer portal frame structure, comprising an upper portal frame composed of an upper crossbeam (1) and an upper column (3), and a lower portal frame layer composed of a lower crossbeam (2) and a lower column (4), wherein the upper crossbeam (1), the lower crossbeam (2) and the upper column (3) are all spliced ​​structures formed by assembling a plurality of assembly modules (5) by means of high-strength bolts, and the lower column (4) is an integral structure in the form of a whole root, and the upper crossbeam (1) and the upper column (3), the upper column (3) and the lower crossbeam (2), and the lower crossbeam (2) and the lower column (4) are all connected and fixed by means of high-strength bolts.

2. A modular tunnel lining trolley portal frame according to claim 1, characterized in that: The assembly module (5) comprises two types: a standard section with a length of 1.0 m and an adjustable section with a length of 0.5 m.

3. A modular tunnel lining trolley portal frame according to claim 2, characterized in that: The adjustment section is arranged at the middle of the corresponding splicing structure of the upper crossbeam (1), the lower crossbeam (2) or the upper column (3).

4. A modular tunnel lining trolley portal frame according to claim 1, characterized in that: The assembly module (5) comprises two channel steel rib beams (501), the web plates of the two channel steel rib beams (501) are arranged opposite to each other and at intervals, the ends of the two channel steel rib beams (501) are welded and fixed via a module connection flange plate (502), the module connection flange plate (502) is welded and fixed to the middle of the wing plate side of the two channel steel rib beams (501), the diagonal brace connection flange plate (503) is welded and fixed to the middle of the web plate side of the two channel steel rib beams (501), and bolt holes (504) are provided on both the module connection flange plate (502) and the diagonal brace connection flange plate (503).

5. A modular tunnel lining trolley portal frame according to claim 4, characterized in that: An operating hand hole (505) is provided on the module connection flange plate (502), and the operating hand hole (505) is provided corresponding to the gap between the two channel steel rib beams (501).

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