CN209907773U

CN209907773U - Assembled precast concrete stair

Info

Publication number: CN209907773U
Application number: CN201920533284.9U
Authority: CN
Inventors: 王少波; 王海铨; 李建锋
Original assignee: Wuxi Sumiton Building Components Co Ltd
Current assignee: Wuxi Sumiton Building Components Co Ltd
Priority date: 2019-04-19
Filing date: 2019-04-19
Publication date: 2020-01-07
Anticipated expiration: 2029-04-19

Abstract

The utility model discloses an assembled precast concrete stair, including prefabricated step board, stair roof beam, half space, the ladder of marking time, the fixture block, the threaded sleeve, fixing bolt and framework of steel reinforcement, prefabricated step board both ends are equipped with stair roof beam, stair roof beam top is fixed with half space, prefabricated step board upper surface equidistance is equipped with the ladder of marking time, and the ladder of marking time is the trapezoidal setting, the inclined plane integrated casting of ladder of marking time has the fixture block, prefabricated step board upper surface equidistance is seted up the draw-in groove that matches with the fixture block, and the fixture block is connected with the draw-in groove, bolt hole has all been seted up symmetrically in ladder of marking time and the fixture block inside, the bolt hole top on the ladder of marking time has seted up the buried groove, the embedded threaded sleeve that matches with the bolt hole of draw-in groove inner wall symmetry, this assembled precast concrete stair directly assembles on stair roof beam after prefabricating, construction period is shorter, and installation weight is lighter, improves the security, the installation of being convenient for.

Description

Assembled precast concrete stair

Technical Field

The utility model relates to an assembly type structure technical field specifically is an assembly type precast concrete stair.

Background

The stairs are members used for vertical traffic between floors in a building, are mainly used for traffic communication between floors and when the height difference is large, and are generally formed by pouring concrete and a building main body together;

however, the stair is complex in construction, long in construction period and waste in construction period; and current assembled stair all are step ladder and step board integrated into one piece, and weight is great during the installation, and the security is lower, the installation of being inconvenient for. For this reason, we propose a fabricated precast concrete stair.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an assembled precast concrete stair to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an assembled precast concrete stair comprises a precast step plate, a stair beam, a rest platform, step ladders, a clamping block, a threaded sleeve, a fixing bolt and a steel reinforcement framework, wherein the stair beam is arranged at both ends of the precast step plate, the rest platform is fixed at the top of the stair beam, the step ladders are equidistantly arranged on the upper surface of the precast step plate and are in a trapezoidal arrangement, the clamping block is integrally cast and formed on the inclined surface of the step ladder, clamping grooves matched with the clamping block are equidistantly arranged on the upper surface of the precast step plate, the clamping block is clamped with the clamping grooves, bolt holes are symmetrically arranged in the step ladders and the clamping block, buried grooves are arranged at the tops of the bolt holes on the step ladders, the threaded sleeve matched with the bolt holes is symmetrically pre-embedded in the inner wall of the clamping grooves, the fixing bolt is inserted in the inner wall of the bolt holes, and is in threaded connection, the stair beam, the prefabricated step plate, the rest platform and the step ladder are all pre-embedded with steel reinforcement frameworks.

Preferably, the positioning blocks are symmetrically fixed on the lower surface of the prefabricated step plate.

Preferably, the upper surface of the step ladder is fixed with an anti-slip strip.

Preferably, the stair beams and the rest platform are integrally cast.

Preferably, concrete is poured between the prefabricated step plate and the rest platform.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses during the installation, hoist prefabricated step board on two stair beams, and make the locating piece card in stair beam one side, prevent that prefabricated step board from sliding, the stair of will marking time is placed on prefabricated step board this moment, and with the fixture block card in the draw-in groove, the bolt hole coincides with threaded sleeve's internal diameter this moment, inject fixing bolt into the bolt hole this moment, and make fixing bolt body and threaded sleeve threaded connection, fixing bolt screws up the back, fill and level up with the pea gravel concreten in the burying groove, and will prefabricate step board, the reinforcing bar ligature for the framework of steel reinforcement on half space and the stair beam, and will prefabricate step board, concrete placement is used in the space between half space and the stair beam, accomplish the installation, this device is with directly assembling on the stair beam after prefabricating stair well, the construction is simple, construction period is shorter.

2. The utility model discloses prefabricated step board is the assembled setting with the stair of marking time, installs prefabricated step board earlier on the stair roof beam when the installation, is marking time with stair and installs on prefabricated step board, when the installation, but the installation weight that significantly reduces improves the security, and the people of being convenient for install.

Drawings

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

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 3 is a schematic sectional view of the step ladder of the present invention;

fig. 4 is a schematic structural view of the prefabricated step plate of the present invention.

In the figure: 1. prefabricating a step plate; 2. a stair stringer; 3. a resting platform; 4. stepping stairs; 5. a clamping block; 6. a card slot; 7. bolt holes; 8. burying the groove; 9. a threaded sleeve; 10. fixing the bolt; 11. a steel reinforcement cage; 12. positioning blocks; 13. and (4) an anti-slip strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an assembled precast concrete stair comprises a precast step plate 1, step beams 2, a rest platform 3, step ladders 4, clamping blocks 5, threaded sleeves 9, fixing bolts 10 and a steel reinforcement framework 11, wherein the step beams 2 are arranged at two ends of the precast step plate 1, the installation of the precast step plate 1 is convenient, the rest platform 3 is fixed at the tops of the step beams 2, the rest of people is convenient, the step ladders 4 are equidistantly arranged on the upper surface of the precast step plate 1, the step ladders 4 are arranged in a trapezoidal manner, the clamping blocks 5 are integrally cast and formed on the inclined surfaces of the step ladders 4, clamping grooves 6 matched with the clamping blocks 5 are equidistantly arranged on the upper surface of the precast step plate 1, the clamping blocks 5 are clamped with the clamping grooves 6, the step ladders 4 and the precast step plate 1 are convenient to assemble, bolt holes 7 are symmetrically arranged in the step ladders 4 and the clamping blocks 5, buried grooves 8 are arranged at the tops of the bolt holes 7 on the, be convenient for level and smooth on surface, 6 inner walls of draw-in groove symmetries are pre-buried have with 7 matched with screw sleeve 9 of bolt hole, 7 inner walls of bolt hole peg graft and have fixing bolt 10, and fixing bolt 10 and screw sleeve 9 threaded connection, be convenient for fix step ladder 4 on prefabricated step plate 1 of marking time, stair roof beam 2, prefabricated step plate 1, rest platform 3 and step ladder 4 inside all pre-buried have steel reinforcement cage 11 of marking time, be convenient for stair roof beam 2, prefabricated step plate 1 and the connection between the rest platform 3.

The positioning blocks 12 are symmetrically fixed on the lower surface of the prefabricated step plate 1, so that the prefabricated step plate 1 can be positioned and installed conveniently.

The upper surface of the step ladder 4 is fixed with an anti-slip strip 13 to prevent people from slipping.

Stair roof beam 2 is the shaping setting of integrative pouring with rest platform 3, increases stair roof beam 2 and rest platform 3's intensity.

Concrete is poured between the prefabricated step plate 1 and the rest platform 3, so that the prefabricated step plate 1, the rest platform 3 and the stair beam 2 form a whole, the integrity is improved, and the strength is increased.

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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an assembled precast concrete stair, includes prefabricated flier (1), stair roof beam (2), rest platform (3), ladder (4), fixture block (5), threaded sleeve (9), fixing bolt (10) and steel reinforcement framework (11) of marking time, its characterized in that: the prefabricated step plate is characterized in that step beams (2) are arranged at two ends of the prefabricated step plate (1), a rest platform (3) is fixed at the top of each step beam (2), step ladders (4) are arranged on the upper surface of the prefabricated step plate (1) at equal intervals, the step ladders (4) are arranged in a trapezoidal mode, clamping blocks (5) are integrally cast on inclined surfaces of the step ladders (4), clamping grooves (6) matched with the clamping blocks (5) are formed in the upper surface of the prefabricated step plate (1) at equal intervals, the clamping blocks (5) are clamped with the clamping grooves (6), bolt holes (7) are symmetrically formed in the step ladders (4) and the clamping blocks (5), buried grooves (8) are formed in the tops of bolt holes (7) in the step ladders (4), threaded sleeves (9) matched with the bolt holes (7) are symmetrically pre-embedded in the inner walls of the clamping grooves (6), and fixing bolts (10) are inserted in, and fixing bolt (10) and threaded sleeve (9) threaded connection, skeleton of steel reinforcement (11) are all pre-buried in stair roof beam (2), prefabricated step board (1), half space (3) and step ladder (4) of marking time.

2. The fabricated precast concrete stair of claim 1, wherein: positioning blocks (12) are symmetrically fixed on the lower surface of the prefabricated step plate (1).

3. The fabricated precast concrete stair of claim 1, wherein: and anti-slip strips (13) are fixed on the upper surfaces of the stepping steps (4).

4. The fabricated precast concrete stair of claim 1, wherein: the stair beam (2) and the rest platform (3) are integrally poured and formed.

5. The fabricated precast concrete stair of claim 1, wherein: concrete is poured between the prefabricated step plate (1) and the rest platform (3).