Tunnel secondary lining trolley for main tunnel and widened telescopic bracket cross beam

Abstract

The utility model discloses a tunnel secondary lining trolley with a main tunnel and a widened telescopic bracket cross beam, and relates to the technical field of tunnel construction. The top framework is formed by welding two top longitudinal beams and a plurality of portal cross beams, the bottom of the top framework is fixedly connected with a plurality of portal stand columns, the portal stand columns are symmetrically arranged, a lower longitudinal beam is fixedly installed between the bottoms of the portal stand columns on the same side, the top of the top framework is provided with two symmetrically-arranged upper formwork assemblies, and the two upper formwork assemblies are fixedly installed on the top of the top framework. Lower template assemblies are installed at the bottoms of the upper template assemblies, the upper template assemblies and the lower template assemblies on the two sides are symmetrically arranged, and a plurality of adjusting mechanisms used for supporting the upper template assemblies and the lower template assemblies are arranged between the portal cross beam and the portal stand columns. According to the utility model, the dismounting times can be reduced, the dismounting time and cost can be reduced, the construction safety risk can be correspondingly reduced, the installation time can be shortened, and the installation condition can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, in particular to a tunnel main hole and tunnel secondary lining trolley with a widened telescopic bracket cross beam. Background Art

[0002] Highway tunnels generally range from a few hundred meters to several kilometers. When the tunnel length is greater than 500 meters, an emergency parking strip needs to be set up on the right side of the tunnel to facilitate drivers in handling emergencies. The strip is generally 50 meters long, and the width of the emergency parking strip is about 3 meters wider than the normal tunnel. Main tunnels generally consider 12-meter or 9-meter main tunnel trolleys, but when constructing widening sections, formwork can be placed on the outside of the main tunnel trolley, or the main tunnel trolley can be modified. There are multiple ways to construct an emergency parking strip: Conventional method 1: Constructing an emergency parking strip with the main tunnel secondary lining trolley modified, and conventional method 2: Constructing an emergency parking strip with the main tunnel trolley carrying formwork.

[0003] Conventional methods usually require assembly inside the tunnel during construction, resulting in a small construction space, great difficulty in operation, and a considerable time consumption. Therefore, a tunnel main tunnel and widened telescopic bracket crossbeam tunnel secondary lining trolley is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel main hole and widened telescopic bracket crossbeam tunnel secondary lining trolley, which can not only reduce the number of disassembly and assembly, reduce disassembly and assembly time and cost, but also correspondingly reduce construction safety risks, and at the same time can shorten the installation time and improve the installation conditions, solving the existing technical problems.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley comprises: a top frame formed by welding two top longitudinal beams and a plurality of portal crossbeams; a plurality of portal columns are fixedly connected to the bottom of the top frame; the plurality of portal columns are symmetrically arranged; a lower longitudinal beam is fixedly installed between the bottoms of the portal columns on the same side; two symmetrically arranged upper template assemblies are provided on the top of the top frame; a lower template assembly is installed at the bottom of each upper template assembly; the upper and lower template assemblies on both sides are symmetrically arranged; a plurality of adjustment mechanisms for supporting the upper and lower template assemblies are provided between the portal crossbeams and the portal columns;

[0007] The adjustment structure includes a bracket crossbeam sliding on the top of the portal crossbeam, and one end of the bracket crossbeam is rotatably connected to the upper template assembly.

[0008] As a further solution of the present invention, the adjustment mechanism also includes a driving assembly for driving the bracket crossbeam to move, and the driving assembly includes an upper longitudinal beam, which is fixed on the top of multiple bracket crossbeams, and a translation cylinder is rotatably connected between the upper longitudinal beam and one of the portal beams.

[0009] As a further solution of the present invention, the adjustment mechanism also includes a plurality of support components for supporting the lower template assembly, the support component includes a template connecting beam, the template connecting beam is fixed to one side of the lower template assembly, a lateral oil cylinder is rotatably connected between the template connecting beam and the portal column, a lateral screw rod is rotatably connected between the template connecting beam and one side of the lower template assembly and the portal column, and a lifting cylinder is rotatably installed between the upper template assembly and the portal crossbeam.

[0010] As a further solution of the present invention, the tops of the portal crossbeam and the bracket crossbeam are both rotatably connected to support screw rods, and the tops of the support screw rods are respectively rotatably connected to the upper template assembly.

[0011] As a further solution of the present invention, the surface of the upper longitudinal beam and the surface of the bracket cross beam are both fixed with bracket columns by bolts, and the tops of the bracket columns are respectively fixed to the upper template assemblies on both sides.

[0012] As a further solution of the present invention, a walking mechanism is provided at the bottom of the lower longitudinal beam, and the walking mechanism includes a track laid on the ground and a hydraulic walking system installed at the bottom of the lower longitudinal beam. The walking system is used in conjunction with the track. The walking mechanism also includes a vertical oil cylinder and a sleeve. The vertical oil cylinder and the sleeve are both fixed on one side of one of the door frame columns. A support rod is slidably connected in the sleeve. The walking system is installed at the bottom of the support rod, and one end of the piston rod of the vertical oil cylinder is fixed to the support rod.

[0013] As a further solution of the present invention, a working platform is installed on one side of the door frame columns at both ends, and a hydraulic station is installed on the top of one of the working platforms.

[0014] As a further solution of the present invention, a plurality of supporting basic jacks are fixedly installed on the bottom of the lower longitudinal beam.

[0015] As a further solution of the present invention, a lateral walkway is fixedly installed on one side of the lower template assembly.

[0016] As a further solution of the present invention, cross-arranged longitudinal trusses are fixedly installed between two adjacent door frame columns, and one side of the bottom of the lower template assembly is rotatably connected to an inclined template supporting jack.

[0017] In this application, it is necessary to assemble the trolley outside the tunnel during the construction of the emergency parking strip. After the assembly is completed, the hydraulic walking system and the track arranged at the bottom of the trolley are used to drive the trolley into the tunnel. When reaching the emergency parking strip position, the trolley is unfolded. When unfolding, the translation cylinder is started, and the translation cylinder drives the bracket crossbeam to move to one side, so that the upper template assembly is translated and unfolded, and then the angle of the upper template assembly is adjusted by the lifting cylinder. After adjustment, the upper template assembly is firmly supported by the bracket column, and the lower template assembly is adjusted and supported by the lateral cylinder. After the adjustment is completed, the lower template assembly is supported and fixed by the lateral screw rod. When the tunnel is constructed normally, the bracket crossbeam is retracted and the upper template assembly and the lower template assembly are replaced.

[0018] The embodiments of the present invention have the following beneficial effects:

[0019] 1. Compared with the traditional trolley with a door frame, it can reduce the number of disassembly and assembly, reduce the disassembly and assembly time and cost, and correspondingly reduce the construction safety risks.

[0020] 2. The widening trolley can be installed outside the tunnel and then driven into the tunnel. It then moves to the work surface and expands the formwork. Because it is installed outside the tunnel, installation time is significantly shortened and installation conditions are improved.

[0021] 3. The widening trolley template does not require any other mechanical assistance to be retracted, and the section work can be completed by the trolley's own hydraulic cylinder.

[0022] 4. The widening and main hole trolleys are combined into one to save equipment procurement costs.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the expanded structure of an embodiment of the utility model in a widened state;

[0026] Figure 2 This is a schematic diagram of the retracted structure in the widened state of one embodiment of the utility model;

[0027] Figure 3 This is a schematic cross-sectional view of a widened state of an embodiment of the present invention;

[0028] Figure 4 This is a structural schematic diagram of the main hole in use state according to one embodiment of the utility model.

[0029] In the figure: 1. Upper formwork assembly; 2. Bracket column; 3. Bracket crossbeam; 4. Translation cylinder; 5. Upper longitudinal beam; 6. Gantry crossbeam; 7. Gantry column; 8. Lower formwork assembly; 9. Lateral screw; 10. Lateral walkway; 11. Lateral cylinder; 12. Vertical cylinder; 13. Formwork connecting beam; 14. Casing; 15. Lower longitudinal beam; 16. Travel system; 17. Formwork support jack; 18. Hydraulic station; 19. Working platform; 20. Longitudinal truss; 21. Foundation jack; 22. Track. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside", etc., which indicate orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0033] Example 1

[0034] See also Figures 1-4 As shown, in this embodiment, a tunnel main hole and widening telescopic bracket crossbeam tunnel secondary lining trolley is provided, including: a top frame welded with two top longitudinal beams and a plurality of portal crossbeams 6, a plurality of portal columns 7 are fixedly connected to the bottom of the top frame, the plurality of portal columns 7 are symmetrically arranged, and a lower longitudinal beam 15 is fixedly installed between the bottoms of the portal columns 7 on the same side, and two symmetrically arranged upper template assemblies 1 are provided on the top of the top frame, and the bottoms of the upper template assemblies 1 are both installed with lower template assemblies 8, and the upper template assemblies 1 and the lower template assemblies 8 on both sides are symmetrically arranged, and the upper template assembly 1 and the lower template assembly 8 are both movable templates, which are existing mechanisms and will not be described in detail here. A plurality of adjustment mechanisms for supporting the upper template assembly 1 and the lower template assembly 8 are provided between the portal crossbeam 6 and the portal column 7;

[0035] The adjustment structure includes a bracket beam 3 sliding on the top of the portal beam 6. The bracket beam 3 is movable, and thus when in use, the template assembly can be replaced to adapt to the tunnel main hole or widening position. Compared with the traditional trolley with an attached portal frame, the number of disassembly and assembly can be reduced, the disassembly and assembly time and cost can be reduced, and the construction safety risk is correspondingly reduced. It can also be installed outside the tunnel and driven into the tunnel after the installation is completed, which greatly shortens the installation time and improves the installation conditions. One end of the bracket beam 3 is rotatably connected to the upper template assembly 1.

[0036] Example 2

[0037] Improvements based on Example 1: Refer to the attached Figures 1-4 :

[0038] In the present utility model, the adjustment mechanism also includes a driving assembly for driving the bracket crossbeam 3 to move, and the driving assembly includes an upper longitudinal beam 5, which is fixed on the top of multiple bracket crossbeams 3. A translation cylinder 4 is rotatably connected between the upper longitudinal beam 5 and one of the portal crossbeams 6. The translation cylinder 4 drives the bracket crossbeam 3 to move and unfold the trolley. When unfolding, the translation cylinder 4 is started, and the bracket crossbeam 3 is driven to move to one side by the translation cylinder 4, thereby causing the upper template assembly 1 to translate and unfold.

[0039] In particular, the adjustment mechanism also includes a plurality of support components for supporting the lower template assembly 8, the support components include a template connecting beam 13, the template connecting beam 13 is fixed to one side of the lower template assembly 8, a lateral oil cylinder 11 is rotatably connected between the template connecting beam 13 and the portal column 7, a lateral screw rod 9 is rotatably connected between the template connecting beam 13 and one side of the lower template assembly 8 and the portal column 7, and a lifting cylinder is rotatably installed between the upper template assembly 1 and the portal crossbeam 6, and the angle of the upper template assembly 1 is adjusted by the lifting cylinder.

[0040] It should be noted that the tops of the gantry crossbeam 6 and the bracket crossbeam 3 are both rotatably connected to support screw rods, and the tops of the support screw rods are rotatably connected to the upper template assembly 1 respectively. The support screw rod is an existing structure, consisting of a screw rod sleeve and a screw rod. Rotating the screw rod can adjust the length of the support screw rod, thereby achieving a supporting effect.

[0041] In the present invention, the surfaces of the upper longitudinal beam 5 and the surfaces of the bracket crossbeam 3 are fixed with bracket columns 2 by bolts, and the tops of the bracket columns 2 are respectively fixed to the upper formwork assemblies 1 on both sides. The bracket columns 2 are used to increase the stability of the upper formwork assembly 1.

[0042] In particular, a walking mechanism is provided at the bottom of the lower longitudinal beam 15, and the walking mechanism includes a track 22 laid on the ground and a hydraulic walking system 16 installed at the bottom of the lower longitudinal beam 15. The walking system 16 is used in conjunction with the track 22. The walking mechanism also includes a vertical cylinder 12 and a sleeve 14. The vertical cylinder 12 and the sleeve 14 are both fixed on one side of one of the gantry columns 7. A support rod is slidably connected in the sleeve 14. The walking system 16 is installed at the bottom of the support rod. The walking system 16 is an existing structure, which is driven by a hydraulic oil motor and a roller, thereby making the equipment move. One end of the piston rod of the vertical cylinder 12 is fixed to the support rod.

[0043] It should be noted that a working platform 19 is installed on one side of the gantry columns 7 at both ends, and a hydraulic station 18 is installed on the top of one of the working platforms 19 .

[0044] In the present invention, a plurality of supporting base jacks 21 are fixedly installed on the bottom of the lower longitudinal beam 15 , and the base jacks 21 are used to increase the stability of the equipment at the working position.

[0045] In particular, a lateral walkway 10 is fixedly installed on one side of the lower template assembly 8.

[0046] It should be noted that a cross-set longitudinal truss 20 is fixedly installed between two adjacent portal columns 7, and one side of the bottom of the lower formwork assembly 8 is rotatably connected to an inclined formwork support jack 17, and the bottom of the formwork support jack 17 is in contact with the ground to increase the stability of the lower formwork assembly 8.

[0047] It should be noted that, in the description of this specification, descriptions such as "first" and "second" are merely used to distinguish various features and have no actual order or directional meaning, and this application is not limited to this.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley, characterized in that: include: A top frame is formed by welding two top longitudinal beams and a plurality of portal cross beams (6); a plurality of portal columns (7) are fixedly connected to the bottom of the top frame; the plurality of portal columns (7) are symmetrically arranged; a lower longitudinal beam (15) is fixedly installed between the bottoms of the portal columns (7) on the same side; two symmetrically arranged upper template assemblies (1) are arranged on the top of the top frame; a lower template assembly (8) is installed at the bottom of each upper template assembly (1); the upper template assemblies (1) and the lower template assemblies (8) on both sides are symmetrically arranged; a plurality of adjustment mechanisms for supporting the upper template assembly (1) and the lower template assembly (8) are arranged between the portal cross beam (6) and the portal columns (7); The adjustment structure comprises a bracket beam (3) sliding on the top of the portal beam (6), and one end of the bracket beam (3) is rotatably connected to the upper template assembly (1).

2. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: The adjustment mechanism further comprises a driving assembly for driving the bracket crossbeam (3) to move, the driving assembly comprising an upper longitudinal beam (5), the upper longitudinal beam (5) being fixed on the top of the plurality of bracket crossbeams (3), and a translation cylinder (4) being rotatably connected between the upper longitudinal beam (5) and one of the portal crossbeams (6).

3. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 2, characterized in that: The adjustment mechanism further comprises a plurality of support assemblies for supporting the lower template assembly (8), wherein the support assemblies comprise a template connecting beam (13), the template connecting beam (13) being fixed to one side of the lower template assembly (8), a lateral oil cylinder (11) being rotatably connected between the template connecting beam (13) and the portal column (7), a lateral screw rod (9) being rotatably connected between the template connecting beam (13) and one side of the lower template assembly (8) and the portal column (7), and a lifting oil cylinder being rotatably installed between the upper template assembly (1) and the portal crossbeam (6).

4. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: The tops of the door frame crossbeam (6) and the bracket crossbeam (3) are both rotatably connected to support screw rods, and the tops of the support screw rods are respectively rotatably connected to the upper template assembly (1).

5. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: The surfaces of the upper longitudinal beam (5) and the bracket cross beam (3) are both fixed with bracket columns (2) by bolts, and the tops of the bracket columns (2) are respectively fixed to the upper template assemblies (1) on both sides.

6. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: A walking mechanism is provided at the bottom of the lower longitudinal beam (15), the walking mechanism comprising a track (22) laid on the ground and a hydraulic walking system (16) installed at the bottom of the lower longitudinal beam (15), the walking system (16) and the track (22) being used in conjunction with each other, the walking mechanism further comprising a vertical oil cylinder (12) and a sleeve (14), the vertical oil cylinder (12) and the sleeve (14) both being fixed to one side of one of the gantry columns (7), a support rod being slidably connected in the sleeve (14), the walking system (16) being installed at the bottom of the support rod, and one end of the piston rod of the vertical oil cylinder (12) being fixed to the support rod.

7. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: A working platform (19) is installed on one side of the door frame columns (7) at both ends, and a hydraulic station (18) is installed on the top of one of the working platforms (19).

8. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: A plurality of supporting foundation jacks (21) are fixedly installed on the bottom of the lower longitudinal beam (15).

9. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: A lateral walkway (10) is fixedly installed on one side of the lower template assembly (8).

10. The tunnel main tunnel and widening telescopic bracket crossbeam tunnel secondary lining trolley as claimed in claim 1, characterized in that: A cross-arranged longitudinal truss (20) is fixedly installed between two adjacent door frame columns (7), and one side of the bottom of the lower template assembly (8) is rotatably connected to an inclined template supporting jack (17).

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