CN217872813U - Rack for construction by three-step method - Google Patents

Abstract

The utility model provides a rack is used in construction of three steps method relates to tunnel construction technical field, and the main objective provides a rack construction is used in tunnel construction who facilitates the use, comparatively nimble and make things convenient for the dismouting. The rack for the three-step construction comprises two rack components which are symmetrically arranged, wherein the two rack components are attached; any one of the rack assemblies comprises a door frame and a wing beam, the door frame comprises a support column and a cross beam, and the cross beam is positioned at the top of the support column and forms a working platform arranged along the horizontal direction; the wing beam is fixedly connected with the supporting column. Because the rack is split, the rack is of a separated structure, the volume and the weight of a single rack assembly are greatly reduced, the rack is convenient to carry and move, and the manufacturing difficulty of the rack is reduced. When the platform is used, the two symmetrically arranged rack assemblies are spliced together, so that a worker can be guaranteed to have enough operation platforms to carry out construction operation.

Description

Rack for construction by three-step method

Technical Field

The utility model belongs to the technical field of the tunnel construction technique and specifically relates to a rack is used in construction of three steps method.

Prepare for

Background

With the increase of the construction speed of domestic high-speed rail, the construction facility technology of the high-speed rail tunnel is also continuously improved. The tunnel excavation is a part of tunnel construction, and the excavation mode of the tunnel excavation needs to be designed according to conditions such as tunnel surrounding rock grades. The existing tunnel excavation modes mainly comprise full-section excavation, two-step excavation, three-step excavation and the like. Different construction modes can be selected according to different geological conditions and construction requirements. When the three-step method is used for tunnel construction, the used rack is formed by splicing steel arches. The rack is of an integral rack-shaped structure and can provide an operation platform for workers. However, the rack has problems of being bulky, difficult to move and transport, and the like, so that the rack is inconvenient to move and transport, and the flexibility of the rack is poor.

In order to solve this problem and improve the flexibility of the rack, a new type of rack structure needs to be developed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rack is used in construction of three step method to solve the rack size that exists among the prior art big on the left side, awkward technical problem. The utility model provides a plurality of technological effects that preferred technical scheme among a great deal of technical scheme can produce are seen in the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a rack for construction by a three-step method, which comprises two rack components which are symmetrically arranged, wherein the two rack components are arranged in a laminating way; any one of the rack assemblies comprises a door frame and a wing beam, the door frame comprises a support column and a cross beam, and the cross beam is positioned at the top of the support column and forms a working platform arranged along the horizontal direction; the wing beam is fixedly connected with the supporting column.

Because carry out the split to the rack, this rack is the disconnect-type structure this moment, consequently greatly reduced the volume and the weight of single rack subassembly to make its convenient transport remove, also reduced the preparation degree of difficulty of rack simultaneously. When the platform is used, two symmetrically arranged rack assemblies are spliced together, so that a worker can be guaranteed to have enough operation platforms to carry out construction operation.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

As a further improvement of the utility model, all the wing beam is located the portal with one side just the wing beam in perpendicular line side's projection with work platform in perpendicular line side's projection does not coincide.

This construction ensures that the wing beam structure can be arranged outside the working platform.

As a further improvement of the present invention, the working platform extends outwards towards one side of the working platform and forms a covering structure protruding from the supporting column.

Because the tunnel face is a working face which is continuously pushed forward in the process of excavating the tunnel, the arrangement of the sunshade platform on one side of the working platform facing the tunnel face can facilitate the construction of workers.

As a further improvement of the utility model, the length of the sunshade platform relative to the support column protrusion is not less than 1m.

As a further improvement of the present invention, the wing beam is located below the working platform and forms a step structure with the cross beam.

This structure can be used to enhance the strength of the stand while facilitating the construction of workers.

As a further improvement, the rack assembly further comprises a ladder stand which is positioned below the working platform in an inclined manner.

The crawling ladder can facilitate workers to go up and down the rack assembly and carry out construction operation.

As a further improvement of the utility model, the both ends of cat ladder respectively with the support column with wing roof beam fixed connection, the cat ladder slope is arranged.

The ladder stand that the slope was arranged is safer when the climbing, simultaneously through with wing roof beam fixed connection, can not influence workman's about normally under the prerequisite of shortening ladder stand length.

As a further improvement of the present invention, the rack assembly further comprises a plurality of diagonal braces, and two ends of at least one of the diagonal braces are fixedly connected to the support column and the cross beam; and/or two ends of at least one inclined support are fixedly connected with the supporting column and the wing beam.

The bracing can be used to reinforce the connection of the support column with the corresponding cross beam and/or wing beam, making it more stable.

As a further improvement of the present invention, the rack assembly further includes a bottom beam, the bottom beam is located the rack assembly bottom and with the support column fixed connection, arbitrary the bottom beam can with at least two support column fixed connection.

The bottom beam can be used for reinforcing the rack assembly, and the matched cross beam can ensure that the connection among a plurality of supporting columns in the rack assembly is firmer.

As a further improvement of the utility model, the utility model also comprises a connecting piece, and the two rack assemblies are symmetrically arranged and pass through the connecting piece can be disassembled and connected.

The detachable connection between two symmetrically arranged rack assemblies can be realized by the connecting piece, and the rack assemblies are convenient for construction personnel to assemble and carry.

Compared with the prior art, the rack for the three-step construction provided by the preferred embodiment of the utility model has the advantages that the volume and the weight of the rack are reduced in a separated arrangement mode, so that constructors can conveniently carry and move the rack in the construction process; in addition, the split-type rack structure does not affect the strength of the rack and the size of the working surface; the ladder stand structure positioned on one side of the rack assembly can facilitate the up-and-down movement of operators and is beneficial to the construction of the operators.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of a three-step construction rack of the present invention;

FIG. 2 is a schematic structural view of the gantry assembly of FIG. 1;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a front view of FIG. 2;

fig. 5 is a top view of fig. 2.

In the figure: 10. a stage assembly; 11. a wing beam; 12. a support pillar; 13. a cross beam; 14. climbing a ladder; 15. bracing; 16. a bottom beam; 20. a working platform; 30. and (4) covering the balcony.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The technical solution of the present invention will be specifically described below with reference to the accompanying drawings.

As shown in figure 1, the utility model provides a rack is used in construction of three steps method, including two rack subassembly 10 of symmetrical arrangement, two rack subassembly 10 laminating settings, as shown in figure 1.

Because the split processing is carried out to the rack, this rack is the disconnect-type structure this moment, consequently greatly reduced the volume and the weight of single rack subassembly 10 to make its convenient transport remove, also reduced the preparation degree of difficulty of rack simultaneously. When the platform is used, two symmetrically arranged platform assemblies 10 are spliced together, so that a worker can be guaranteed to have enough working platforms to carry out construction operation.

The above-mentioned stand assemblies 10 can be used only by being attached together, or can be detachably connected by a connecting member.

Specifically, the connecting member may be an i-shaped steel or the like, and the i-shaped steel is fixed on the two adjacent rack assemblies 10 through a screw and nut structure, so that the two adjacent rack assemblies 10 can be detachably connected, and at this time, the two rack assemblies 10 are symmetrically arranged left and right. When the construction is completed or the construction site needs to be moved, the two stage assemblies 10 may be respectively carried and moved to the corresponding positions.

The structure of the above-described gantry assembly 10 is shown in fig. 2-5 (wherein the ladder 14 in fig. 2, 4-5 is not depicted):

the gantry assembly 10 comprises a gantry and wing beam 11, wherein the gantry comprises a support column 12 and a beam 13, and the beam 13 is positioned on top of the support column 12 and forms a work platform 20 arranged in a horizontal direction; the wing beam 11 is fixedly connected with the supporting column 12. The working platform 20 refers to a plane where a plurality of supporting columns 12 and cross beams 13 are connected. In construction, a substantially planar structure may be constructed by laying iron plates over the support columns 12 and the cross beams 13 for safety.

As an alternative embodiment, all wing beams 11 are located on the same side of the gantry and the projection of the wing beams 11 in the vertical direction does not coincide with the projection of the working platform 20 in the vertical direction, as shown in fig. 5.

This construction ensures that the wing beam 11 construction can be arranged outside the working platform 20. The wing beam 11 helps to improve the load-bearing capacity of the platform assembly 10, and also facilitates the up-and-down construction of workers to some extent. In addition, the wing beam 11 is close to the side wall of the tunnel, so that a worker can process the side wall of the tunnel, such as reinforcing or further excavating the side wall of the tunnel, on the premise of ensuring that the construction platform is large enough, and at this time, the wing beam 11 is located below the working platform 20 and forms a step structure with the cross beam 13, as shown in fig. 4.

As an alternative embodiment, the work platform 20 extends outwardly toward the tunnel face side and forms a sunshade 30 projecting relative to the support post 12. Since the tunnel face is a working face which is continuously pushed forward in the process of excavating the tunnel, the arrangement of the balcony shielding 30 at the side of the working platform 20 facing the tunnel face can facilitate the construction of workers.

As an alternative embodiment, the sunshade table 30 protrudes with respect to the support column 12 by a length of not less than 1m. The length of the sunshade 30 protruding too short affects the normal construction, and too long results in insufficient bearing capacity of the sunshade 30, so the length needs to be determined by combining the structure of the platform assembly 10 and the strength of the selected material. In the present embodiment, the sunshade table 30 protrudes with a length of 1.5m with respect to the support post 12, as shown in fig. 3.

Meanwhile, in order to ensure that the rack assembly 10 has better strength, as an alternative embodiment, the rack assembly 10 further includes a plurality of inclined struts 15, and two ends of at least one inclined strut 15 are fixedly connected with the supporting column 12 and the cross beam 13; and/or both ends of at least one inclined strut 15 are fixedly connected with the supporting column 12 and the wing beam 11. In this embodiment, there are a plurality of inclined struts 15, wherein two ends of a part of the inclined struts 15 are fixedly connected to the supporting column 12 and the cross beam 13, and two ends of the other inclined struts 15 are fixedly connected to the supporting column 12 and the wing beam 11.

The braces 15 may serve to reinforce the connection of the support columns 12 with the respective cross beams 13 and/or wing beams 11, making them more stable.

As an alternative embodiment, the gantry assembly 10 further includes a ladder 14, the ladder 14 being located obliquely below the work platform 20.

The ladder 14 facilitates the worker's ability to get on and off the rack assembly 10 and perform construction work.

As an alternative embodiment, the two ends of the ladder 14 are fixedly connected with the supporting column 12 and the wing beam 11 respectively, the ladder 14 is arranged obliquely, as shown in fig. 3, and a guardrail structure is arranged on the ladder 14 for ensuring safety.

The ladder 14 arranged obliquely is safer when climbing, and meanwhile, the normal up and down of workers can not be influenced on the premise of shortening the length of the ladder 14 by fixedly connecting the ladder with the wing beam 11.

As an alternative embodiment, the gantry assembly 10 further includes a bottom beam 16, the bottom beam 16 is located at the bottom of the gantry assembly 10 and is fixedly connected with the support columns 12, and any bottom beam 16 can be fixedly connected with at least two support columns 12.

The bottom beams 16 may serve to reinforce the rack assembly 10, while the mating cross beams 13 may make the connection between the plurality of support columns 12 in the rack assembly 10 more secure.

In the present embodiment, the number of the bottom beams 16 is two, and two bottom beams 16 are respectively connected to three support columns 12.

All the supporting columns 12, the wing beams 11, the inclined struts 15 and the like in the rack assembly 10 are formed by welding I14I-shaped steel, the bottom beam 16 is formed by double splicing I18I-shaped steel, and the cross beam 13 is made of phi 16 steel bars. In addition, the inclined strut 15 may be made of a triangular steel plate material.

In order to ensure safety, steel mesh sheets with the specification of 10cm to 10cm are laid on the working platform 20, and the edge protection is made of phi 42 steel pipes.

Compared with the traditional rack, the utility model provides a stair structure adopts split type design, can effectively improve the transportation and the removal efficiency of rack, also can help to reduce the processing and the installation degree of difficulty of rack simultaneously, reduces transportation cost and use cost that the rack brought because of volume and weight problem.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The rack for the construction of the three-step method is characterized by comprising two rack components which are symmetrically arranged, wherein the two rack components are attached;

any one of the rack assemblies comprises a rack and a wing beam, the rack comprises a support column and a cross beam, and the cross beam is positioned at the top of the support column and forms a working platform arranged along the horizontal direction; the wing beam is fixedly connected with the supporting column.

2. The trestle for three-step construction according to claim 1, wherein the working platform extends outward toward a tunnel face side and forms a balcony protruding with respect to the supporting column.

3. The trestle for three-step construction according to claim 2, wherein the balcony protrudes by a length of not less than 1m with respect to the support post.

4. The trestle for three-step construction according to claim 1, wherein all the wing beams are located on the same side of the mast and the projection of the wing beams in the vertical direction is not coincident with the projection of the working platform in the vertical direction.

5. The trestle of claim 1, wherein the wing beam is positioned below the work platform and forms a step structure with the cross beam.

6. The trestle for three-step construction according to claim 1, wherein the trestle assembly further comprises a ladder, the ladder being located obliquely below the work platform.

7. The trestle for three-step method construction according to claim 6, wherein both ends of the ladder are fixedly connected with the support column and the wing beam, respectively, and the ladder is arranged obliquely.

8. The rack for the construction by the three-step method as claimed in claim 1, wherein the rack assembly further comprises a plurality of diagonal braces, and both ends of at least one of the diagonal braces are fixedly connected with the supporting columns and the cross beams; and/or two ends of at least one inclined support are fixedly connected with the supporting column and the wing beam.

9. The trestle for three-step construction according to claim 1, wherein the trestle assembly further comprises a bottom beam, the bottom beam is positioned at the bottom of the trestle assembly and is fixedly connected with the supporting columns, and any bottom beam can be fixedly connected with at least two supporting columns.

10. The trestle for three-step construction according to any one of claims 1 to 9, further comprising a connecting member by which two of the trestle assemblies arranged symmetrically are detachably connected.

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