CN211647029U

CN211647029U - Prefabricated staircase of assembled

Info

Publication number: CN211647029U
Application number: CN201921794650.2U
Authority: CN
Inventors: 周亮; 李超刚; 刘鑫; 王尧; 魏磊; 邱正清; 沈新兵; 章健; 骆秋雁; 代斌; 李岩; 马烽杰; 薛巾国; 王双林; 于博文
Original assignee: Beijing Urban Construction Far East Construction Investment Group Co ltd; Beijing Urban Construction Group Co Ltd
Current assignee: Beijing Urban Construction Far East Construction Investment Group Co ltd; Beijing Urban Construction Group Co Ltd
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-10-09
Anticipated expiration: 2029-10-23

Abstract

The utility model provides an assembled prefabricated staircase relates to building engineering technical field. The utility model discloses behind the split of prefabricated staircase, the dead weight reduces for small-size tower crane also can satisfy construction requirements, saves construction cost, and simultaneously, the dead weight reduces the control degree of difficulty that can reduce in the installation, improves hoist and mount process factor of safety.

Description

Prefabricated staircase of assembled

Technical Field

The utility model relates to a building engineering technical field, concretely relates to prefabricated stair of assembled.

Background

Building industrialization refers to the large industrial production mode through modern manufacturing, transportation, installation and scientific management to replace the low-level, scattered and low-efficiency handicraft production mode in the traditional building industry. Therefore, the industrial preparation of the building industrial assembled prefabricated staircase conforms to the concept of building industrialization, and has the characteristics of uniform production, convenient transportation and hoisting, construction speed acceleration, construction precision improvement and resource consumption reduction.

However, the prefabricated assembled single-race stair is big at present, and the tower crane of traditional construction can not satisfy the hoist and mount requirement, needs to carry out the tower crane upgrade, has increased on-the-spot installation cost.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an assembled prefabricated staircase has solved among the prior art technical problem that prefabricated staircase dead weight is big.

(II) technical scheme

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

the utility model provides an assembled prefabricated staircase, including stair beam and a plurality of stair section, both ends are connected with the stair beam about the stair section, but the junction of adjacent stair section is provided with interconnect's coupling assembling in pairs.

Preferably, the connection assembly includes: the connecting device comprises an internal connecting ring and external connecting steel bars, wherein the external connecting steel bars are connected with the internal connecting ring.

Preferably, the built-in connecting ring comprises a connecting ring and a built-in steel bar, the built-in steel bar is poured in the stair section, and a cast-in-place groove section is arranged at the connecting ring.

Preferably, the upper end and the lower end of the stair section are both provided with reserved cavities, the stair beam is provided with a fixing column, the upper end of the stair section is fixedly connected with the fixing column of the upper stair beam through grouting material, the upper end of the stair section is fixedly connected with the fixing column of the upper stair beam through a nut, and the fixing column comprises an anchor head and a bolt.

Preferably, the prefabricated staircase comprises two staircase sections

(III) advantageous effects

The utility model provides an assembled prefabricated staircase. Compared with the prior art, the method has the following beneficial effects:

the utility model discloses behind the split of prefabricated staircase, the dead weight reduces for small-size tower crane also can satisfy construction requirements, saves construction cost, and simultaneously, the dead weight reduces the control degree of difficulty that can reduce in the installation, improves hoist and mount process factor of safety. The utility model discloses a coupling assembling connects the stair section for connection between the stair section of prefabricated stair is more firm.

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 view of the overall structure of a prefabricated staircase in the embodiment of the present invention;

fig. 2 is a schematic structural view of an external connecting steel bar in the embodiment of the present invention;

figure 3 is the utility model discloses the fixed articulated structure sketch map of prefabricated staircase upper end and last ladder beam

Fig. 4 is a schematic structural view of the lower end of the prefabricated staircase in sliding connection with the lower beam in the embodiment of the present invention;

wherein: stair section 1, go up the terraced roof beam 3, lower terraced roof beam 2, external connecting reinforcement 4, anchor head 5, bolt 6, polyphenyl filling layer 7, cement mortar 13 screed-coat 8, polyphenyl sealing layer 9, PE stick 10, sealed glue 11, grout material 12, mortar 13, cavity 14, gasket 15, nut 16, asphalt felt 17.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in 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.

The embodiment of this application has solved the big technical problem of prefabricated stair dead weight among the prior art through providing a prefabricated stair of assembled, realizes reducing the dead weight of a stair in advance, reduces the installation cost of prefabricated stair.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

The embodiment of the utility model provides an assembled prefabricated staircase, as shown in fig. 1 ~ 4, this prefabricated staircase includes: the prefabricated staircase comprises a staircase beam and a plurality of staircase sections 1, wherein the upper end and the lower end of each staircase section 1 are connected with the staircase beam, and in the installation process, the adjacent staircase sections 1 can be connected with each other through connecting components, so that the connection between the staircase sections 1 is firmer.

In the specific implementation process, the connecting assembly comprises: the steel wire rope comprises an internal connecting ring (not shown in the attached drawing) and external connecting steel bars 4, wherein the external connecting steel bars 4 are L-shaped, and the external connecting steel bars 4 can be inserted into the internal connecting ring.

In the specific implementation process, the built-in connecting ring comprises a connecting ring and built-in steel bars poured in the stair sections 1, the connecting ring is exposed out of the stair sections 1, and cast-in-situ groove sections (not shown in the attached drawings) are arranged at the connecting ring. The cast-in-place groove section is a depression at the tread of the ladder of the stair section 1, and the height of the tread at the connecting ring is lower than other positions of the same tread. In the construction process, the connecting ring is provided with a cast-in-place groove section for pouring and plugging through mortar.

In the specific implementation process, the upper end and the lower end of the stair section 1 are both provided with reserved cavities (not marked in the attached drawings), the stair beam is provided with fixing columns, the reserved cavities and the fixing columns are fixedly connected through grouting materials 12, and the fixing columns comprise anchor heads 5 and bolts 6.

In the specific implementation process, the upper end of the stair section 1 is fixedly hinged with the upper stair beam 3, and the lower end of the stair section 1 is connected with the lower stair beam 2 in a sliding manner, as shown in fig. 3-4. Go up ladder roof beam 3 and lower ladder roof beam 2 and all pre-buried two fixed columns, the fixed column includes anchor head 5 and 1M16C level bolt 6, all is equipped with diameter 50 mm's round hole at the upper and lower both ends of stair section 1. In the work progress, settle 2 stair sections 1 on last stair beam 3 and lower stair beam 2, let the external connecting reinforcement 4 of L shape on stair section 1 peg graft in the link, go up the round hole of stair section 1 upper end is aimed at to bolt 6 on the stair beam 3, and the round hole of stair section 1 lower extreme is aimed at to bolt 6 on the lower stair beam 2. A polyphenyl filling layer 7 and a cement mortar 13 leveling layer 8 are arranged at the gap between the upper ladder beam 3 and the upper end of the stair section 1. Wherein, the outer end of the cement mortar 13 leveling layer 8 is sealed by adopting a polyphenyl sealing layer 9, and the polyphenyl filling layer 7 is rubberized by a PE rod 10 and a sealant 11 through the upper end of the gap. The processing mode of the gap between the lower end of the lower stair beam 2 and the lower end of the stair section 1 and the processing mode of the gap between the upper end of the upper stair beam 3 and the upper end of the stair section 1 are similar, and the difference is that a layer of asphalt felt 17 is arranged in a cement mortar 13 leveling layer 8 at the gap between the lower stair beam 2 and the stair section 1. The gap between the round hole of the upper ladder beam 3 and the bolt 6 is filled with C40-grade CGM grouting material 12, and the upper end of the gap is blocked by mortar 13. The upper end of the round hole of the upper ladder beam 3 is widened, the inner diameter of the round hole is 56-58 mm after widening, the depth is 60mm, and the total depth of the round hole is 220 mm. In the construction process, a gasket 15 with the diameter of 56mm is placed in the round hole after the widening, the bolt 6 penetrates through the gasket 15 to be connected with the nut 16, a cavity 14 is formed between the bolt 6 and the round hole with the diameter of 50mm, and the round hole at the upper end of the cavity 14 is plugged through mortar 13.

In summary, compared with the prior art, the method has the following beneficial effects:

1. the embodiment of the utility model provides a to prefabricate the stair split back, the dead weight reduces for small-size tower crane also can satisfy the construction requirement, saves construction cost, and simultaneously, the dead weight reduces the control degree of difficulty that can reduce in the installation, improves hoist and mount process factor of safety.

2. The embodiment of the utility model provides a connect the stair section through coupling assembling for connection between the stair section of prefabricated stair is more firm, simultaneously through setting up cast-in-place groove section, in the installation, pours cast-in-place groove section with the mortar, makes the built-in go-between of coupling assembling and the connection between the external connecting reinforcement further consolidate, has ensured the fastness between the stair section.

3. The utility model discloses a stair section upper end and the fixed articulated of last ladder beam, lower extreme and underbeam sliding connection have improved prefabricated stair's resistance to deformation ability and mechanical strength, have reduced prefabricated stair to building major structure's pressure simultaneously, improve stair and building major structure's degree of safety.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The assembly type prefabricated staircase is characterized by comprising a staircase beam and a plurality of staircase sections (1), wherein the upper end and the lower end of each staircase section (1) are connected with the staircase beam, and connecting components which can be connected with each other are arranged at the connecting positions of the adjacent staircase sections (1) in pairs;

wherein, the coupling assembling includes: the connecting device comprises an internal connecting ring and external connecting steel bars (4), wherein the external connecting steel bars (4) are connected to the internal connecting ring.

2. Prefabricated staircase according to claim 1, characterised in that the built-in connection rings comprise connection rings and built-in reinforcement cast in the staircase sections (1), where connection rings are provided with cast-in-place groove sections.

3. Prefabricated staircase according to claim 1, characterised in that the ladder beams comprise an upper (3) and a lower (2) ladder beam, the upper end of the staircase section (1) being fixedly hinged to the upper ladder beam (3), the lower end of the staircase section (1) being slidingly connected to the lower ladder beam (2).

4. The prefabricated assembled stair of claim 1, wherein the prefabricated stair sections (1) are provided with reserved cavities at the upper ends and the lower ends, fixing columns are arranged on the stair girders, the upper ends of the stair sections (1) are fixedly connected with the fixing columns of the upper stair girders (3) through grouting materials (12), the upper ends of the stair sections (1) are fixedly connected with the fixing columns of the upper stair girders (3) through nuts (16), and the fixing columns comprise anchor heads (5) and bolts (6).

5. Prefabricated staircase according to any of the claims 1-4, characterized in that it comprises two staircase sections (1).