CN215368339U

CN215368339U - Prefabricated assembled stair

Info

Publication number: CN215368339U
Application number: CN202120062600.6U
Authority: CN
Inventors: 肖正元
Original assignee: Sanneng Integrated Housing Co Ltd
Current assignee: Sanneng Integrated Housing Co Ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-12-31
Anticipated expiration: 2031-01-11

Abstract

The utility model relates to an assembly type building, in particular to a prefabricated assembly type stair which comprises a prefabricated bench, wherein the prefabricated bench comprises a plurality of tread blocks and a bench plate which are prefabricated separately, first through holes which extend vertically and downwards are reserved in the tread blocks, first connecting pieces are embedded in the bench plate corresponding to the first through holes in the tread blocks, the tread blocks are sequentially placed on the bench plate, the first connecting pieces of the bench plate extend into the first through holes of the tread blocks, and connecting materials are filled in the first through holes. And a concrete layer is arranged between the step block and the stair section plate. According to the utility model, the integral prefabricated staircase is divided into the plurality of the tread blocks and the stair section plate, so that the weight of a single component of the prefabricated staircase is reduced, a relatively economic construction lifting appliance can be used, the construction cost is saved, and the die is simple to manufacture and easy to produce.

Description

Prefabricated assembled stair

Technical Field

The utility model relates to an assembly type building, in particular to a prefabricated assembly type stair.

Background

In prefabricated buildings, prefabricated stairways are usually made in one piece in a factory and then transported to the site for erection by means of equipment, as shown in chinese patent CN 211923286U. Because the size and the weight of the prefabricated staircase are overlarge, a large tower crane is often selected to hoist, and the construction cost is greatly increased.

In order to reduce the weight of the prefabricated staircase, the following measures are generally taken: 1. the prefabricated staircase is disassembled into a left prefabricated part and a right prefabricated part, and then assembled on site; 2. the prefabricated stair step plates or the step holes are made into hollow holes so as to reduce the weight of the prefabricated stair component. If the first method is adopted, the number of the components of the prefabricated staircase is increased, and the production and construction cost is increased; if the second method is adopted, the actual thickness of the prefabricated stair tread is reduced, and the strength of the prefabricated stair cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a prefabricated assembled stair which can reduce the single hoisting weight and reduce the requirements of a lifting appliance, aiming at the defects of large size and net weight of the existing prefabricated stair.

In order to solve the technical problem, the utility model provides a prefabricated assembled stair which comprises a prefabricated bench, wherein the prefabricated bench comprises a plurality of separately prefabricated step blocks and a bench plate, first through holes which vertically extend downwards are reserved in the step blocks, first connecting pieces are embedded in the bench plate corresponding to the first through holes in the step blocks, the step blocks are sequentially placed on the bench plate, the first connecting pieces of the bench plate extend into the first through holes of the step blocks, and connecting materials are filled in the first through holes.

According to the utility model, the integral prefabricated staircase is divided into the plurality of tread blocks and the stair section plate, and the stair section plate and the tread blocks are prefabricated and installed separately, so that the weight of the split tread blocks and the weight of the stair section plate are much lighter than that of the integrally-installed prefabricated staircase, and therefore, a lower-specification and more economical lifting appliance can be selected for lifting prefabricated staircase components, further the construction cost is saved, the split tread blocks and the stair section plate are regular, the mold is simple to manufacture, the mass production can be realized, the transportation efficiency is high, and the assembling construction is convenient.

Preferably, a concrete layer is arranged between the stepping blocks and the stair section plates so as to improve the connection strength of the stepping blocks and the stair section plates.

In a similar way, the bottom surface of the stepping block is set to be a rough surface, and the upper surface of the stair section plate is set to be a rough surface.

Preferably, the upper end and the lower end of the stair section plate are respectively connected with the building through the stair beam platform plate, second connecting pieces are pre-buried on the stair beam platform plate, second through holes are reserved at the upper end and the lower end of the stair section plate respectively, when the stair section plate is connected with the stair beam platform plate, the second connecting pieces are inserted into the second through holes, and the second through holes are filled with the connecting materials, so that the prefabricated staircase is convenient to install and construct, and can ensure the connection stability with the stair beam platform plate.

Preferably, the first connecting piece and the second connecting piece are bolt reinforcing steel bars or bolts with anchors.

Preferably, the connecting material is cement mortar, so that the assembly construction is more convenient.

Preferably, the first through hole is arranged in the middle of the tread block, so that the tread block is installed more stably. Similarly, the first connecting pieces are symmetrically arranged on two sides of the longitudinal axis of the ladder section plate.

Preferably, the upper end of bench board is connected through fixing support with the ladder beam landing slab on upper strata, the lower extreme of bench board is connected through sliding support with the ladder beam landing slab of lower floor, so that the bench board has certain installation margin, has realized prefabricated staircase's fast assembly.

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

1. according to the utility model, the integral prefabricated staircase is divided into the plurality of tread blocks and the stair section plate, so that the weight of a single component of the prefabricated staircase is reduced, a relatively economic construction lifting appliance can be used, and the construction cost is saved.

2. The utility model has the advantages of simple mold manufacturing and easy production.

3. The utility model accelerates the assembly speed and reduces the assembly cost.

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 introduced below, and it is obvious that the drawings in the following description are 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 side view schematically showing an assembled state of a prefabricated staircase according to a first embodiment of the present invention.

Fig. 2 is a schematic top view of a prefabricated staircase according to a first embodiment of the present invention.

Fig. 3 is a side view of a ladder section board according to an embodiment of the utility model (not shown in the drawings).

Fig. 4 is a top view of a ladder panel (not shown with the first connectors) according to an embodiment of the utility model.

Fig. 5 is a schematic side view of a stepping block according to a first embodiment of the utility model.

Fig. 6 is a partially enlarged schematic structural view of a prefabricated staircase according to a first embodiment of the present invention.

Detailed Description

The utility model is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the utility model.

For convenience of description, the relative positional relationship of the components, such as: the descriptions of the upper, lower, left, right, etc. are described with reference to the layout directions of the drawings in the specification, and do not limit the structure of the present patent.

As shown in fig. 1 to 6, one embodiment of the prefabricated staircase according to the present invention includes a prefabricated staircase section 1, wherein the prefabricated staircase section 1 includes a plurality of tread blocks 2 and a staircase slab 3 which are separately prefabricated.

A first through hole 21 extending vertically downwards is reserved in the middle of the tread block 2.

Two rows of first connecting pieces 31 and lifting hooks 33 are embedded at the upper surface of the stair section plate 3 at intervals, the first connecting pieces 31 are symmetrically arranged on two sides of the longitudinal axis of the stair section plate 3 and correspond to the first through holes 21 in the step block 2. The first connecting member 31 is preferably a bolt bar or a bolt with an anchor head.

The bottom surface of the tread block 2 and the upper surface of the bench plate 3 are both provided with rough surfaces.

When the prefabricated staircase is assembled, a concrete layer 4 is firstly paved on the upper surface of the stair section plate 3, then the tread blocks 2 are sequentially placed on the concrete layer 4 on the upper surface of the stair section plate 3 one by one, the first connecting piece 31 of the stair section plate 3 extends into the first through hole 21 of the tread block 2, and finally, the first through hole 21 is filled with the connecting material 5.

The upper end and the lower end of the bench slab 3 are respectively connected with a building 7 through a bench beam platform slab 6.

Pre-buried second connecting piece 61 on terraced roof beam landing slab 6, and the terraced roof beam landing slab 6 on upper strata sets up fixing support, sets up sliding support on the terraced roof beam landing slab 6 of lower floor, second through-hole 32 is reserved respectively to the upper end and the lower extreme of bench board 3.

When the bench board 3 is connected with the building 7, the second connecting piece 61 of the ladder beam platform board 6 is inserted into the second through hole 32 of the bench board 3, and the second through hole 32 is filled with the connecting material 5, meanwhile, the upper end of the bench board 3 is arranged on the fixed support of the upper ladder beam platform board 6, and the lower end of the bench board 3 is arranged on the sliding support of the lower ladder beam platform board 6.

The second connector 61 is preferably a bolt bar or an anchor bolt.

The connecting material 5 is preferably cement mortar which is higher than cement used for the prefabricated staircase by one grade.

When the prefabricated staircase is installed on a building 7, the stair section plates 3 can be transported to the site and hoisted when each layer of main body of the building 7 is constructed, and the stair section plates 3 are used as an up-and-down construction channel. The step blocks 2 are uniformly installed when the main structure of the building is to be capped. Before each layer of installation block 2, lay a layer of fine stone concrete layer 4 on the rough surface of bench plate 3 earlier, will ensure when the installation block 2 of marking time that first through-hole 21 aligns with first connecting piece 31 on the bench plate 3, then pour into cement mortar (connecting material) into first through-hole 21, can.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. The utility model provides a prefabricated assembled stair, includes prefabricated bench, its characterized in that, prefabricated bench is including separately prefabricated a plurality of blocks and a bench board of marking time, the first through-hole of reserving vertical downwardly extending on the block of marking time, correspond on the bench board mark time the pre-buried first connecting piece of first through-hole on the block, mark time the block and place in proper order on the bench board, just the first connecting piece of bench board stretches into in the first through-hole of the block of marking time, fill with connecting material in the first through-hole.

2. The prefabricated staircase of claim 1, wherein a concrete layer is provided between the tread blocks and the flight deck.

3. The prefabricated staircase of claim 1 or 2, wherein the bottom surface of the tread blocks is provided as a rough surface.

4. A prefabricated staircase according to claim 1 or 2, characterised in that the upper surface of the flight is provided as a rough surface.

5. The prefabricated assembled stair of claim 1 or 2, wherein the upper end and the lower end of the stair section plate are respectively connected with a building through a stair beam platform plate, second connecting pieces are pre-embedded in the stair beam platform plate, second through holes are reserved in the upper end and the lower end of the stair section plate respectively, and when the stair section plate is connected with the stair beam platform plate, the second connecting pieces are inserted into the second through holes and filled with the connecting materials.

6. A prefabricated staircase according to claim 5, characterised in that the first and second connectors are bolt bars or anchor bolts.

7. The prefabricated staircase of claim 5, wherein said connecting material is cement mortar.

8. The prefabricated staircase of claim 2, wherein the first through hole is provided in a middle portion of the tread block.

9. A prefabricated staircase according to claim 2, characterised in that the first connectors are arranged symmetrically on both sides of the longitudinal axis of the flight deck.

10. The prefabricated assembled staircase according to claim 1, wherein the upper ends of the stair section plates are connected with the upper-layer stair beam landing plates through fixed supports, and the lower ends of the stair section plates are connected with the lower-layer stair beam landing plates through sliding supports.