CN213296934U - Light-duty mixed structure prefabricated staircase - Google Patents

Abstract

The utility model provides a light-duty mixed structure prefabricated staircase, include that stair tread, stair step and being located the cavity metalwork of stair tread, wherein the diameter of cavity metalwork is less than the thickness of stair plate, the cavity metalwork wrap up in the inside of stair tread. The prefabricated staircase with the light mixed structure can effectively reduce the dead weight and is convenient to install.

Description

Light-duty mixed structure prefabricated staircase

Technical Field

The utility model relates to a building field further relates to a light-duty mixed structure prefabricated staircase.

Background

Along with the development of the society, the concept of low carbon and environmental protection is more and more emphasized, and the building industry is gradually developed towards the direction of assembly. The stairs are the main vertical traffic passage and the important escape passage in the building industry, and are important components of modern buildings. The industrialization of the building stairs has an important promoting effect on the industrialization development of modern buildings, and the integral prefabricated stairs are an important mode for the industrialization of the stairs.

Compared with the traditional stairs which are cast on site by formwork, the prefabricated stairs are cast in advance elsewhere and then integrally transported to the site for assembly, and the prefabricated stairs have the advantages of standardized operation, high integrity, construction speed improvement and the like.

It should be pointed out that current prefabricated staircase mainly is solid plate type structure, and this type of prefabricated staircase has the great shortcoming of dead weight, for example the span is about 5 m's stair, and its dead weight can reach about 5 tons, has surpassed the hoist and mount weight of the general tower crane of job site far away, brings very big inconvenience for the work progress. In order to solve the problem of hoisting the current prefabricated staircase, two solutions are generally provided, the first solution is to replace a tower crane with larger hoisting weight, but the utilization efficiency of the tower crane is lower, and the construction cost is increased; the second scheme is to cut the prefabricated staircase into two sections or a plurality of sections for hoisting, and then splicing, but the integrity of the staircase can be reduced, so that the safety of the staircase is reduced.

Also there are some light-duty prefabricated staircases in the existing market, for example the stair that shaped steel ladder beam and prefabricated step combined, cavity plate stair etc.. For the hollow plate type stairs, due to the limitation of the height of the section of the prefabricated stairs, the actual weight reduction capacity is about 30 percent, and the hoisting requirement of a conventional tower crane can not be met. The light stair that combines together shaped steel and prefabricated mark time can not satisfy most building structure to the requirement of stair outward appearance to the installation effectiveness of prefabricated mark time and shaped steel ladder beam is lower.

In conclusion, the conventional prefabricated staircase needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a light-duty mixed structure's prefabricated staircase, it has lighter dead weight and a chi pours the shaping, can solve the problem of hoist and mount and assembly effectively.

In order to achieve the above object, the present invention provides the following technical solutions:

a lightweight hybrid prefabricated staircase, comprising:

the stair tread comprises stair treads, stair treads and at least one hollow metal piece arranged on the stair treads, wherein the diameter of the hollow metal piece is smaller than the thickness of the stair treads, and the hollow metal piece is wrapped inside the stair treads.

Preferably, the stair tread comprises a stair tread main body, an upper mounting platform and a lower mounting platform, wherein the upper mounting platform and the lower mounting platform are positioned at the upper end and the lower end of the stair tread main body, and the hollow metal piece extends to the lower mounting platform from the upper mounting platform through the stair tread main body.

Preferably, the number of the hollow metal members is plural, and the plural hollow metal members are sequentially arranged at a preset distance from each other.

Preferably, the prefabricated staircase further comprises a mounting framework, wherein the mounting framework is mounted on the hollow metal piece for fixing the hollow metal piece.

Preferably, the installation skeleton includes being located the last skeleton of cavity metalwork top and being located the lower skeleton of cavity metalwork below, the cavity metalwork is located go up the skeleton with between the skeleton down.

Preferably, the mounting framework further comprises a connecting framework connected with the upper framework and the lower framework, and the connecting framework is used for connecting the upper framework and the lower framework in the vertical direction.

Preferably, the thickness of the stair plate outside the hollow metal piece is more than 20 mm.

Preferably, the stair treads and the stair treads are cast from lightweight foam concrete.

Preferably, the cross-sectional shape of the hollow metal member is circular or square.

Preferably, the hollow metal member is a steel pipe.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is the schematic view of the inner structure of the stair tread of the utility model.

In the figure: a stair tread body 11; an upper mounting platform 12; a lower mounting platform 13; a stair step 20; a hollow metal member 30; mounting the framework 40; a mounting hole 50; and (6) hoisting holes 60.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

Referring to the attached drawings 1 to 3 of the specification, the light-weight hybrid structure prefabricated staircase provided by the invention is illustrated. The utility model provides a light-duty mixed structure prefabricated staircase adopts hollow metal structure and light-duty foam concrete structure's mixed structure can alleviate prefabricated staircase's dead weight effectively, satisfies the requirement of on-the-spot hoist and mount and assembly when satisfying structural strength.

The prefabricated staircase with the light mixed structure comprises a stair board 10, stair steps 20 and at least one hollow metal piece 30, wherein the at least one hollow metal piece 30 is arranged in the stair board 10, and the stair board 10 wraps the outer side of the hollow metal piece 30. The stair steps 20 are positioned above the stair boards 10, and the stair boards 10 and the stair steps 20 are integrally cast by light foam concrete.

It should be noted that, in the process of pouring and forming the stair treads 10 and the stair treads 20, the pouring material does not enter the inside of the hollow metal member 30, so that after the pouring of the stair treads 10 and the stair treads 20 is completed, the inside space formed by the hollow metal member 30 is still in a hollow state, thereby effectively reducing the self weight while ensuring the structural strength of the prefabricated staircase.

Further, the stair plate 10 further comprises a stair plate main body 11, an upper mounting platform 12 positioned at the upper end of the stair plate main body 11, and a lower mounting platform 13 positioned at the lower end of the stair plate main body 11, wherein the upper mounting platform 12 and the lower mounting platform 13 of the stair plate 10 are used for assembling the stair plate 10 with other building materials, and the stair steps 20 are formed on the stair plate main body 11.

In the preferred embodiment, the hollow metal member 30 extends from the upper mounting platform 12 of the stair board 10 to the lower mounting platform 13 through the stair board body 11. That is, the hollow metal member 30 has a shape and a length adapted to the stair tread 10.

Preferably, the number of the hollow metal members 30 is implemented as a plurality, and a plurality of the hollow metal members 30 are arranged at intervals and are all wrapped by the stair tread 10. It should be noted that after the stair tread 10 and the stair steps 20 are integrally cast, the openings at both ends of the hollow metal member 30 may be closed or not closed. When the openings of the two ends of the hollow metal member 30 are not closed, the two ends of the hollow metal member 30 are flush with the outer ends of the upper mounting platform 12 and the lower mounting platform 13, respectively. When the openings at the two ends of the hollow metal member 30 are closed, that is, when the openings at the two ends of the hollow metal member 30 are also wrapped with the casting material, the openings at the two ends of the hollow metal member 30 are firstly blocked in the casting process, so as to prevent the casting material from entering the interior of the hollow metal member 30 in the casting process.

The prefabricated staircase with light mixed structure further comprises a mounting framework 40, wherein the mounting framework 40 is configured for fixing the hollow metal piece 30 in the pouring process so as to improve the pouring stability.

Specifically, the mounting frame 40 further includes an upper frame located above the hollow metal member 30 and a lower frame located below the hollow metal member 30, and the hollow metal member 30 is fixed between the upper frame and the lower frame. The upper frame and the lower frame of the mounting frame 40 are respectively staggered with respect to the plurality of hollow metal members 30 arranged side by side. Preferably, the upper frame and the lower frame are perpendicular to the longitudinal extension direction of the hollow metal member 30, respectively. Preferably, the number of the upper frame and the lower frame of the mounting frame 40 is implemented as a plurality, the upper frames are sequentially arranged above the hollow metal member 30 at intervals, and the lower frames are sequentially arranged below the hollow metal member 30 at intervals. In other embodiments, a plurality of the upper skeletons can be staggered with each other to form a net structure, so as to further increase the stability. Correspondingly, a plurality of the lower frameworks can be staggered with each other to form a net structure. The specific structure of the upper frame and the lower frame of the mounting frame 40 should not constitute a limitation of the present invention.

The mounting frame 40 further includes a connecting frame connecting the upper frame and the lower frame of the mounting frame 40. The connecting framework is used for fixing the upper framework and the lower framework in the vertical direction, so that the fixing effect of the hollow metal piece 30 is further improved.

Preferably, the hollow metal member 30 and the mounting frame 40 are made of steel materials, and the hollow metal member 30 may be fixed to the mounting frame 40 by welding. It can be understood that in other embodiments of the present invention, the hollow metal member 30 can be connected to the mounting frame in other ways as long as the object of the present invention can be achieved, and the hollow metal member 30 and the mounting frame 40 should not be limited by the specific way of fixing the connection.

Preferably, in the preferred embodiment, the hollow metal member 30 is implemented as a hollow metal track, and the cross-sectional shape of the hollow metal member 30 is implemented as a square or a circle, such as a rectangular steel pipe or a circular steel pipe. It is understood that in the embodiments of the present invention, the cross-sectional shape of the hollow metal member 30 can also be implemented as other regular or irregular shapes as long as the objects of the present invention can be achieved, and the cross-sectional shape of the hollow metal member 30 should not constitute the limitation of the present invention.

Further, the thickness of the lightweight foam concrete wrapped outside the hollow metal member 30 is more than 20mm, that is, the thickness of the stair tread 10 outside the hollow metal member 30 is more than 20mm, so as to provide effective protection for the hollow metal member 30.

The prefabricated staircase of lightweight hybrid structure further has a set of mounting holes 50 formed at the upper mounting platform 12 and the lower mounting platform 13, the mounting holes 50 being used for assembling the prefabricated staircase with other building materials. The mounting holes 50 are located in the gaps between adjacent hollow metal members 30, and the mounting holes 50 are spaced from the hollow metal members 30 by a predetermined distance, which does not affect the structural integrity of the hollow metal members. Preferably, the mounting holes 50 penetrate the upper mounting platform 12 and the lower mounting platform 13 of the prefabricated staircase, respectively.

The prefabricated staircase with the light mixed structure is further provided with hoisting holes 60 formed in the preset positions of the stair tread main body 11, and the hoisting holes 60 are used for hoisting in the assembling process of the prefabricated staircase. The lifting holes 60 penetrate through the stair tread body 11 and the stair steps 20 to facilitate lifting in the assembling process. Further, the lifting hole 60 is located between the gaps of the adjacent hollow metal members 30 and has a preset distance from the hollow metal members 30, so that the structural integrity of the hollow metal members 30 is not affected.

It should be noted that, the utility model provides a scheme that light-duty mixed prefabricated staircase adopted cavity metalwork 30 and light-duty concrete to mix, and the solid area of the solid prefabricated staircase of the same specification of cross section comparison tradition can reduce about 25%, has improved bearing capacity effectively when alleviateing prefabricated staircase's dead weight effectively. The utility model provides a outsourcing concrete adopts light-duty foam concrete in the prefabricated stair of light-duty mixture, and relatively ordinary concrete can subtract about 35% of weight. Therefore the utility model provides a light-duty mixed prefabricated staircase can reduce about 50% dead weight than the solid prefabricated staircase of tradition, need not to cut the hoist and mount ability that can satisfy current conventional tower crane at the in-process of hoist and mount to prefabricated staircase.

It should also be noted that the utility model provides a light-duty prefabricated staircase that mixes can be applicable to the manufacturing template of the solid prefabricated staircase of tradition to need not to carry out improvement by a wide margin to construction assembly method and flow, can once prefabricate the shaping in mill, transport to the job site and accomplish the installation.

The light mixed prefabricated staircase provided by the invention not only can effectively reduce the dead weight, but also has better stress test and displacement test effects, and can meet the use requirements of building materials.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (10)

1. A prefabricated staircase of light-duty mixed structure, characterized in that includes:

the stair tread comprises stair treads, stair treads and a hollow metal piece arranged on the stair treads, wherein the diameter of the hollow metal piece is smaller than the thickness of the stair treads, and the hollow metal piece is wrapped inside the stair treads.

2. The prefabricated staircase of claim 1, wherein the stair treads comprise a staircase body and upper and lower mounting platforms at upper and lower ends of the staircase body, the hollow metal member extending from the upper mounting platform through the staircase body to the lower mounting platform.

3. The prefabricated staircase of claim 2, wherein the number of the hollow metal members is plural, and the plural hollow metal members are sequentially arranged at a predetermined distance from each other.

4. The prefabricated staircase of claim 3, further comprising a mounting frame mounted to the hollow metal member for securing the hollow metal member.

5. The prefabricated staircase of claim 4, wherein the mounting framework comprises an upper framework disposed above the hollow metal member and a lower framework disposed below the hollow metal member, the hollow metal member being positioned between the upper framework and the lower framework.

6. The prefabricated staircase of claim 5, wherein the mounting framework further comprises a connecting framework connecting the upper framework and the lower framework for connecting the upper framework and the lower framework in a vertical direction.

7. The prefabricated staircase of claim 3, wherein the thickness of the staircase sheet outside the hollow metal element is above 20 mm.

8. The prefabricated staircase of claim 1, wherein the stair treads and the stair treads are cast from lightweight foam concrete.

9. The prefabricated staircase of claim 1, wherein the hollow metal member has a cross-sectional shape that is circular or square.

10. The prefabricated staircase of claim 9, wherein the hollow metal member is a steel tube.

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