CN203701464U

CN203701464U - Fabricated stair

Info

Publication number: CN203701464U
Application number: CN201320711984.5U
Authority: CN
Inventors: 顾辰欢; 陈汉彬; 桂芳
Original assignee: China Construction Third Engineering Bureau Co Ltd
Current assignee: China Construction Third Engineering Bureau Co Ltd
Priority date: 2013-11-12
Filing date: 2013-11-12
Publication date: 2014-07-09
Anticipated expiration: 2023-11-12

Abstract

The utility model discloses a fabricated stair comprising two inclined long main steel pipes. The fabricated stair is characterized by also comprising a plurality of stair plates formed by connecting pieces and step plates; the connecting pieces are fixed at two ends of the step plates, and fixed with the inclined long main steel pipes through a cross fastener; each step plate is formed by welding an angle iron frame and a steel bar grid; the steel bar grid is erected by a group of longitudinal steel bars and a group of transverse steel bars, and fixed with the square angle iron frame in a spot welding manner; each connecting piece is made by a short steel pipe; the short steel pipes are embedded into the short edges of the angle iron frame and welded and fixed with the short edges. The fabricated stair disclosed by the utility model is simple in manufacturing of the step plates, concise in perception, and convenient to erect and assemble and dismantle, and can achieve repeated utilization, and meanwhile, compared with the existing scaffold stair and step plate forms, the provided vertical construction channel is better in safety.

Description

Assembling stair

Technical field

The utility model relates to a kind of assembling stair of the realm of building construction.

Background technology

At present, scaffold stair and the step plate of construction site do not form unification, the existing excess stocks that adopt job site are made more temporarily, principal mode has two kinds: the one, and be connected with fastener by steel pipe and make temporary ladder, the step plate of cat ladder is generally buckled in tilting steel pipe by two short steel pipes, and upper berth wooden form is fixedly made.This scaffold cat ladder is simple for production, but between wooden form and steel pipe, lack reliable fixed form, the general plank kerf that adopts, be wound around the mode of plank and steel pipe with iron wire, while causing the upper and lower cat ladder of constructor, plank is fixing insecure, has potential safety hazard, and application life is short, be difficult to recycle; The 2nd, adopt square steel pipe welded to form, step plate face, by the rectangular steel tube of two horizontal positioned, is welded on twice plagioclase steel pipe, same, and constructor is in the time of upper and lower cat ladder, and pedal tread is too little, and the rainy day is easily sliding, has larger potential safety hazard.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of assembling stair, has solved the problems referred to above.

Technical problem to be solved in the utility model is achieved through the following technical solutions:

A kind of assembling stair, comprise two main steel pipes of plagioclase, it is characterized in that: also comprise multiple stair tread that formed by connector and step plate, and described step plate two ends fixed connecting piece, connector is fixed by cruciform fastening for falsework and the main steel pipe of plagioclase.

Described step plate is welded by angle iron frame and reinforcing bar grid.

Described reinforcing bar grid is set up into grid by one group of longitudinal reinforcement with one group of transverse reinforcement, and fixes with the spot welding of angle steel square frame.

Described connector is made by short steel pipes, and described short steel pipes embeds the minor face place of angle iron frame and is welded and fixed with minor face.

The beneficial effects of the utility model are: assembling stairway stepping slab of the present utility model make simple, perception is succinct, set up with easy accessibility, can realize and recycling, simultaneously, relatively existing scaffold stair and step plate form, the vertical construction channel security providing is better.

Accompanying drawing explanation

Fig. 1: the fabricated stair tread planar configuration of the utility model figure

Fig. 2: the fabricated stair tread of the utility model front constructional drawing

Fig. 3: the utility model Assembled Building gangboard side surface configurations figure

Fig. 4: the stereogram of the utility model stair tread

In accompanying drawing, 1-short steel pipes, 2-angle steel square frame, 3-reinforcing bar grid, 4-step plate unit, 5-cruciform fastening for falsework, the tilting steel pipe of 6-

The specific embodiment

Shown in Fig. 1-4, a kind of assembling stair, comprise two main steel pipes of plagioclase, it is characterized in that: also comprise multiple stair tread that formed by connector and step plate, and described step plate two ends fixed connecting piece, connector is fixed by cruciform fastening for falsework and the main steel pipe of plagioclase.

Described step plate is welded by angle iron frame and reinforcing bar grid.

Described reinforcing bar grid is welded respectively and is positioned to the upper and lower both sides of angle steel square frame by one group of longitudinal reinforcement and one group of transverse reinforcement, is welded to each other formation.Wherein, one group of longitudinal reinforcement 2-3 root, diameter 6-8mm, equidistantly arranges along minor face angle steel, and length is slightly less than long corner angle; One group of transverse reinforcement 3-4 root, diameter 6-8mm, equidistantly arranges along long corner angle, and length is slightly less than minor face angle steel.

Described connector is made by short steel pipes, and described short steel pipes embeds the minor face place of angle iron frame and is welded and fixed with minor face.Described short steel pipes one end is cut open flatly, and minor face angle steel embeds, and is welded and fixed, and the other end is treated to be connected with stair vertical applied force member.Wherein, the long 14-20cm of short steel pipes, cutting mouth is apart from short steel pipes edge 4-6cm, and the degree of depth of cutting mouth is long corresponding to minor face leg of angle.

Described angle steel square frame, is welded successively by 2 long corner angles and 2 minor face angle steel, the long 750mm-1000mm of long corner angle, the long 200-250mm of minor face angle steel, the excellent ∟ 25 × 3 that selects of angle steel dimensions.

Totally two of the main steel pipes of described plagioclase, every long 6m, specification is φ 48 × 3.5 or φ 48 × 3.0, tilts 25 °-45 °, places with the spacing that is slightly less than scaffold array pitch, forms the vertical applied force member of cat ladder, bears the vertical load that stair tread transmits.

Stair tread of the present utility model two ends short steel pipes adopts cruciform fastening for falsework to be connected with the main steel pipe of plagioclase, forms assembling stair, can be erected on putlog (put-lock), for building operations pedestrains safety passage.The concrete size of stair tread can and optionally be adjusted according to on-the-spot actual conditions, the principle of adjusting is slightly less than scaffold upright rod transfer with the main steel pipe spacing of plagioclase, the short steel pipes of the main steel pipe of plagioclase stretches out the main steel pipe certain size of plagioclase, and the firm fastening of available cruciform fastening for falsework is advisable, because the vertical rod transfer of dual-raw external scaffold is generally 900-1050m, so the stairway width that the utility model is corresponding can be 850-1000mm, step plate unit total length 950-1200mm, wherein 1000mm is preferred employing size applied widely, and can be recycled.

The utility model making step is as follows:

2 long corner angles and 2 minor face angle steel of ① Yong ∟ 25 × 3 models, after overlap joint, be firmly welded into the angle steel square frame of 800mm × 200mm successively;

2. the longitudinal reinforcement of 3 diameter 6mm, length 790mm is equidistantly arranged, two-end-point is welded on minor face angle steel;

3. the transverse reinforcement of 3 diameter 6mm, length 190mm is equidistantly arranged, after two-end-point is welded under long corner angle, then fixed with longitudinal reinforcement spot welding;

4. prepare 2 sections of the long short steel pipes of 150mm, and in the one end apart from edge 50mm, the dark 25mm of machine cuts one, the mouth of wide 4mm;

5. two minor face angle steel are embedded respectively in the cutting mouth of short steel pipes, welding is fixed into stair tread unit.

Claims

1. assembling stair, comprise two main steel pipes of plagioclase, it is characterized in that: also comprise multiple stair tread that formed by connector and step plate, and described step plate two ends fixed connecting piece, connector is fixed by cruciform fastening for falsework and the main steel pipe of plagioclase.

2. assembling stair as claimed in claim 1, is characterized in that: described step plate is welded by angle iron frame and reinforcing bar grid.

3. assembling stair as claimed in claim 2, is characterized in that: described reinforcing bar grid is set up into grid by one group of longitudinal reinforcement with one group of transverse reinforcement, and fix with the spot welding of angle steel square frame.

4. assembling stair as claimed in claim 1, is characterized in that: described connector is made by short steel pipes, and described short steel pipes embeds the minor face place of angle iron frame and is welded and fixed with minor face.