Foldable lining trolley for tunnel widening section

Abstract

The utility model provides a tunnel widening section foldable lining trolley, which relates to the technical field of tunnel lining engineering construction, and comprises a template and a portal frame which are arranged on the inner wall of a tunnel, the formwork comprises two folding top formworks and two folding side formworks. The portal comprises a main beam and supporting columns, supporting frames are installed on the two sides of the supporting columns, the top of the main beam is connected with a bracket assembly, and the two ends of the bracket assembly are connected with the inner wall of the folding top formwork. The bottom of the portal is connected with the jacking mechanism; the bottom of the jacking mechanism is connected with the walking mechanism; the portal and the formwork are supported through a supporting assembly. By means of the bracket assembly and the supporting assembly, the formwork can be supported and folded, the formwork can be spliced at a time outside a tunnel hole, and the situation that the splicing space in the hole is limited is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel lining engineering construction, in particular to a foldable lining trolley for a tunnel widened section. Background Technique

[0002] During the construction of a tunnel, the secondary lining construction of the widened section is one of the key contents of tunnel construction. Since the construction progress of the secondary lining in the widened section is late, generally, the old normal-section secondary lining trolley is modified into a formwork trolley suitable for the emergency parking widened section. The traditional formwork trolley for the widened section is installed and disassembled in the tunnel, with limited operating space, high safety risks, and long installation and disassembly time.

[0003] A retractable formwork trolley for a tunnel widened section with the application number 2021204477960 includes a formwork mechanism, a bracket mechanism, a gantry mechanism, a translation mechanism, a hydraulic cylinder system, a jack mechanism, a chain block, and fixed casters; the gantry mechanism is a portal-shaped structure composed of vertical gantry columns and a horizontal gantry crossbeam at the top, the bracket mechanism is installed on the gantry crossbeam through the translation mechanism, the formwork mechanism is arranged outside the bracket mechanism and the gantry mechanism, and a hydraulic cylinder system and a jack mechanism are installed inside it. This formwork trolley can effectively reduce the cumbersome processes such as the turnover, installation, and disassembly of the trolley, speed up the construction progress, and save a large amount of manpower, material resources, and financial resources. However, the assembly of the formwork in the tunnel is labor-consuming and has a high risk, which is inconvenient in specific construction. Summary of the Invention

[0004] The utility model aims to solve at least to some extent the technical problems in the related technologies. For this purpose, the utility model proposes a foldable lining trolley for a tunnel widened section.

[0005] The technical solution for the utility model to solve the technical problems is as follows: A foldable lining trolley for a tunnel widened section includes a formwork and a gantry arranged on the inner wall of the tunnel; the formwork includes two folding top forms and two folding side forms; the gantry includes a main beam and support columns, support frames are installed on both sides of the support columns, a bracket assembly is connected to the top of the main beam, and both ends of the bracket assembly are respectively connected to the inner walls of the folding top forms; a jacking mechanism is connected to the bottom of the gantry, and a traveling mechanism is connected to the bottom of the jacking mechanism; the gantry and the formwork are supported by a support assembly.

[0006] Preferably, the bracket assembly includes a bracket crossbeam, the top of the bracket crossbeam is detachably connected to a bracket column, and the top of the bracket column supports the folding top form; telescopic mechanisms are respectively connected to both ends of the bracket crossbeam, and the telescopic ends of the two telescopic mechanisms are respectively connected to the inner walls of the two folding top forms.

[0007] Preferably, the support assembly includes support frames symmetrically arranged on both sides of the gantry, temporary side form supports, and temporary top form supports. One end of the support frame support is hinged to the support frame, and the other end of the support frame support is hinged to the inner wall of the folding side form; one end of the temporary side form support is hinged to the side wall of the support column, and the other end of the temporary side form support is hinged to the folding side form; one end of the temporary top form support is hinged to the bracket crossbeam, and the other end of the temporary top form support is hinged to the folding top form.

[0008] Preferably, there are two groups of temporary side form supports on one side, which are respectively arranged on the support columns at the top and bottom of the support frame.

[0009] Preferably, there are at least two groups of support frame supports on one side, which are respectively arranged at the top and bottom of the support frame.

[0010] Preferably, the top of the folding top form is an inclined section, and the inclined sections of the two folding top forms are mutually attached.

[0011] Preferably, a diagonal brace of a stabilizing structure is also connected between the main beam and the support column.

[0012] Compared with the prior art, the above scheme has the following advantages or beneficial effects:

[0013] 1. Through the bracket assembly and the support assembly, the present utility model can support and fold the formwork, enabling the formwork to be assembled at one time outside the tunnel hole, avoiding the limited space for in-hole assembly.

[0014] 2. Through the jacking mechanism and the traveling mechanism, the present utility model enables the trolley to travel normally in the tunnel and perform jacking at the construction site, without the need for disassembly and recombination, which can improve the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The attached drawings forming a part of this specification are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0016] Figure 1 FIG. is a schematic diagram of the folded state of a foldable lining trolley for a tunnel widened section.

[0017] Figure 2 FIG. is a schematic diagram of the construction state of a foldable lining trolley for a tunnel widened section.

[0018] Figure 3 FIG. is a schematic diagram of the gantry structure of a foldable lining trolley for a tunnel widened section.

[0019] Figure 4 FIG. is a schematic diagram of the structure when the top form of a foldable lining trolley for a tunnel widened section is supported.

[0020] Figure 5 It is a schematic diagram of the auxiliary frame in the folded state of a foldable lining trolley for the widened section of a tunnel.

[0021] Figure 6 It is a schematic diagram of the auxiliary frame in the supported state of a foldable lining trolley for the widened section of a tunnel.

[0022] Description of the reference numerals:

[0023] 1. Gantry; 11. Main beam; 12. Support column; 13. Diagonal brace; 2. Bracket assembly; 21. Bracket cross beam; 22. Bracket column; 23. Telescopic mechanism; 3. Formwork; 31. Folding side formwork; 32. Folding top formwork; 4. Support frame; 5. Support assembly; 51. Support frame support; 52. Temporary side formwork support; 53. Temporary top formwork support; 6. Jacking mechanism; 7. Traveling mechanism. Detailed implementation manners

[0024] In order to clearly illustrate the technical features of this solution, the present utility model will be elaborated in detail below through specific implementation manners and in conjunction with its accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, the components and settings of specific examples are described below. In addition, the present utility model may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the drawings are not necessarily drawn to scale. The present utility model omits the description of well-known components and processing technologies and processes to avoid unnecessarily limiting the present utility model. The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Such as Figures 1 - 6As shown in the figure, to solve the problem of limited space for splicing in the tunnel, this embodiment proposes a foldable lining trolley for the widened section of the tunnel, which includes a formwork 3 and a gantry 1 arranged on the inner wall of the tunnel; the formwork 3 includes two folding top forms 32 and two folding side forms 31. One ends of the two folding top forms 32 are in contact with each other, and the other ends are respectively in contact with the folding side forms 31; after the formwork 3 is propped up, it can support against the inner wall of the tunnel. The gantry 1 includes a main beam 11 and support columns 12. Support frames 4 are installed on both sides of the support columns 12. A bracket assembly 2 is connected to the top of the main beam 11. The bracket assembly 2 includes a bracket cross beam 21. A bracket column 22 is detachably connected to the top of the bracket cross beam 21. The top of the bracket column 22 props up the folding top form 32; both ends of the bracket cross beam 21 are connected to a telescopic mechanism 23. The telescopic ends of the telescopic mechanism 23 are respectively connected to the inner walls of the two folding top forms 32. In this embodiment, the telescopic mechanism 23 includes a telescopic head and a telescopic seat, and the telescopic head can extend out of the telescopic seat. The bottom of the gantry 1 is connected to a jacking mechanism 6, and the jacking mechanism 6 can realize the up and down movement of the formwork 3. The bottom of the jacking mechanism 6 is connected to a traveling mechanism 7, which can realize the movement of the formwork 3 when the formwork 3 is folded; the gantry 1 and the formwork 3 are supported by a support assembly 5.

[0026] The support assembly 5 includes support frame supports 51, temporary side form supports 52 and temporary top form supports 53 symmetrically arranged on both sides of the gantry 1. In the support assembly 5 on one side of the gantry 1, there are three groups of support frame supports 51. One end of the support frame support 51 is hinged to the support frame 4, and the other end of the support frame support 51 is hinged to the inner wall of the folding side form 31; there are two groups of temporary side form supports 52, which are respectively located on the support columns 12 at the top and bottom of the support frame 4. One end of the temporary side form support 52 is hinged to the side wall of the support column 12, and the other end of the temporary side form support 52 is hinged to the folding side form 31; one end of the temporary top form support 53 is hinged to the bracket cross beam 21, and the other end of the temporary top form support 53 is hinged to the folding top form 32.

[0027] Working method:

[0028] As Figure 1 shown, after the trolley is assembled, it can be moved to the designated position by relying on the traveling mechanism 7. After the trolley is in place, the folding top form 32 is opened through the telescopic mechanism 23 and the temporary top form support 53. The bracket column 22 is installed, and the temporary top form support 53 is disassembled to complete the fixation of the upper structure of the trolley. Then the support frame support 51 is installed, the temporary side form support 52 is disassembled, the height of the gantry 1 is increased through the jacking mechanism 6, and finally, after the trolley is fixed, concrete can be poured.

[0029] The widening section construction is completed, and it is ready to pass through the main tunnel and go to the next construction point (the next widening section). The working steps are as follows: (1) Lower the height of the gantry 1 through the lifting mechanism 6; (2) Remove the support of the accessory frame and install the temporary side formwork support 52; (3) Remove the bracket column 22 and install the temporary top formwork support 53; (4) Contract the telescopic mechanism 23 and contract the folding top formwork 32; (5) Move to the next construction point.

[0030] Although the specific implementation manners of the utility model are described above in conjunction with the accompanying drawings, they are not limitations on the protection scope of the utility model. Based on the technical solution of the utility model, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the utility model.

Claims

1. A foldable lining trolley for a tunnel widening section, comprising a template (3) and a portal frame (1) arranged on the inner wall of a tunnel; the template (3) comprises two foldable top templates (32) and two foldable side templates (31); the portal frame (1) comprises a main beam (11) and a support column (12), and support frames (4) are installed on both sides of the support column (12), characterized in that: The top of the main beam (11) is connected to a bracket assembly (2), and both ends of the bracket assembly (2) are respectively connected to the inner wall of the folding top mold (32); the bottom of the door frame (1) is connected to a jacking mechanism (6), and the bottom of the jacking mechanism (6) is connected to a walking mechanism (7); the door frame (1) and the template (3) are supported by a support assembly (5); The bracket assembly (2) comprises a bracket crossbeam (21), the top of the bracket crossbeam (21) is detachably connected to the bracket column (22), and the top of the bracket column (22) supports the folding top mold (32); the two ends of the bracket crossbeam (21) are respectively connected to the telescopic mechanism (23), and the telescopic ends of the two telescopic mechanisms (23) are respectively connected to the inner walls of the two folding top molds (32).

2. The foldable lining trolley for tunnel widening section according to claim 1, characterized in that: The support assembly (5) comprises a support frame support (51), a temporary side mold support (52) and a temporary top mold support (53) symmetrically arranged on both sides of the door frame (1); one end of the support frame support (51) is hinged to the support frame (4), and the other end of the support frame support (51) is hinged to the inner wall of the folding side mold (31); one end of the temporary side mold support (52) is hinged to the side wall of the support column (12), and the other end of the temporary side mold support (52) is hinged to the folding side mold (31); one end of the temporary top mold support (53) is hinged to the bracket crossbeam (21), and the other end of the temporary top mold support (53) is hinged to the folding top mold (32).

3. The foldable lining trolley for tunnel widening section according to claim 2, characterized in that: Two groups of temporary side formwork supports (52) are provided on one side, and are respectively arranged on the support columns (12) at the top and bottom of the support frame (4).

4. The foldable lining trolley for tunnel widening section according to claim 2, characterized in that: At least two groups of single-sided support frame supports (51) are provided, which are respectively arranged at the top and bottom of the support frame (4).

5. The foldable tunnel widening section lining trolley according to claim 1, characterized in that: The top of the folding top mold (32) is a beveled surface, and the beveled surfaces of the two folding top molds (32) fit each other.

6. The foldable tunnel widening section lining trolley according to claim 1, characterized in that: A diagonal brace (13) for stabilizing the structure is also connected between the main beam (11) and the support column (12).

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