CN220133307U

CN220133307U - Assembled steel stair

Info

Publication number: CN220133307U
Application number: CN202321259263.5U
Authority: CN
Inventors: 丁泽成; 王文广; 周东珊; 李鹏程; 钟亮; 李晓; 林萍
Original assignee: Zhejiang Yasha Decoration Co Ltd
Current assignee: Zhejiang Yasha Decoration Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-12-05
Anticipated expiration: 2033-05-23

Abstract

The assembled steel stair comprises a stair component and a cross beam arranged at the top of the stair component, wherein the cross beam is horizontally arranged, and the cross beam is arranged along the width direction of the stair component; hanging pipes corresponding to two sides of the stair assembly are arranged below the cross beam, connecting pieces which are clamped with the hanging pipes are arranged at the ends of the stair assembly, and bolts connected with the connecting pieces are arranged on the hanging pipes; compared with the prior art, through the stair subassembly of prefabricated integral type structure, only need with the connecting piece joint on the stair subassembly on the hanger pipe when the installation to through bolt with hanger pipe and connecting piece fixed connection, realize being fixed in the crossbeam with the hanger pipe on, realize the installation of stair subassembly promptly, the integral erection is more convenient.

Description

Assembled steel stair

Technical Field

The utility model relates to the technical field of buildings, in particular to an assembled steel stair.

Background

Stairs are also provided in multi-storey and high-rise buildings provided with elevators and escalators as main vertical transportation means as members for vertical transportation between floors in the building. High-rise buildings, although using elevators as the main vertical vehicles, still leave stairways for escape in the event of fire. The stairs are composed of a stair section (also called stair run), a platform (rest platform), a enclosing member and the like. The space can be divided into an indoor stairway and an outdoor stairway. The indoor stairs are clearly explained and applied to various houses, and the indoor stairs are mainly made of solid wood stairs, steel-wood stairs, steel and glass, reinforced concrete and the like or various mixed materials because of pursuing indoor attractive and comfortable effects.

In apartment fitment, assembled steel stair is mostly only carried out spare part production, carries out the equipment and uses again after reaching the assembly scene, adopts traditional welding mode to carry out to assembled connection mode of assembled steel structure stair at present, and the welding can provide more stable fastness and convenient to use, but adopts welded assembly mode to dismantle the difficulty after steel stair installation is accomplished, and carries out welded staff's welding technique can not be ensured, can produce the situation of rosin joint, buries the potential safety hazard.

In order to solve the problem, chinese patent application number 201810435921.9 discloses an assembled stair, the above-mentioned disclosed assembled stair, including the girder, the installation end, prefabricated step, the guardrail, a plurality of prefabricated steps detachable connection, and all utilize screw and girder to link firmly, the girder is the slope upwards setting, the installation end has been linked firmly at the girder both ends, the installation end includes the crossbeam, stiffening beam and rag bolt, prefabricated step and girder all link firmly with crossbeam side middle part, the stiffening beam links firmly perpendicularly on crossbeam another side, the crossbeam is provided with the through-hole, the stiffening beam is the channel-section steel, and all be provided with the through-hole at stiffening beam front end and rear end, and the middle part of stiffening beam still is provided with the filler gate, one side of channel-section steel opening is the setting down, still be provided with the steel reinforcement cage in the channel-section steel, the steel reinforcement cage is by many reinforcing bars vertically and horizontally links to form, rag bolt installs in the through-hole, and rag bolt is the bottom plate on the building, be provided with rag installation hole down.

The assembled stair disclosed by the utility model has the advantages that the main beam, the mounting end and the prefabricated stair steps are connected and assembled into the stair, although the stair is convenient to mount to a certain extent, the assembly of the stair is realized by connecting the main beam, the mounting end, the prefabricated stair steps and the like at a plurality of positions, so that the connection points of the stair are increased, the stair is easy to loosen due to the existence of excessive connection points in the use process of the stair, the strength of the stair is reduced, and the danger is easy to occur along with the increase of the use duration of the stair; in addition, the stairs are too complicated in the assembly process, and the rapid assembly and disassembly of the stairs are not facilitated.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the assembled steel stair which is simple in structure, convenient to install and capable of being detached at any time.

In order to achieve the above object, the present utility model adopts the following technical scheme: the assembled steel stair comprises a stair component and a cross beam arranged at the top of the stair component, wherein the cross beam is horizontally arranged, and the cross beam is arranged along the width direction of the stair component; hanging pipes corresponding to two sides of the stair assembly are arranged below the cross beam, connecting pieces which are connected with the hanging pipes in a clamping mode are arranged at the ends of the stair assembly, and bolts connected with the connecting pieces are arranged on the hanging pipes.

As a preferred scheme of the utility model, the stair assembly comprises a support platform which is obliquely arranged and a plurality of steps which are arranged on the support platform, and the connecting piece is arranged on the top of the support platform.

As a preferable scheme of the utility model, the supporting platform comprises two inclined pipes which are arranged in parallel, and the steps are formed by splicing angle steel and a floor slab.

As a preferable scheme of the utility model, the angle steel is arranged on two inclined pipes along the length direction of the inclined pipes, and the floor slab is laid on the angle steel which is oppositely arranged.

As a preferable scheme of the utility model, the bending part of the angle steel is of a right-angle structure.

As a preferable scheme of the utility model, the floor slab is provided with a screw connected with the angle steel or the cross beam.

As a preferable scheme of the utility model, the connecting piece is fixedly arranged at the top of the inclined tube, and a fixing plate for positioning the inclined tube is arranged at the bottom of the inclined tube.

As a preferable mode of the utility model, the connecting piece is provided with a bolt hole connected with the hanging pipe, and the hanging pipe is provided with a connecting hole matched with the bolt hole.

As a preferable scheme of the utility model, the hanging pipe is vertically arranged at the bottom of the cross beam, the connecting piece is of a U-shaped structure, and the opening size of the connecting piece corresponds to the size of the hanging pipe.

As a preferred embodiment of the present utility model, the inclined tube is connected to the middle part of the connecting member.

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

1. through prefabricating the stair assembly of integral type structure, only need with the connecting piece joint on the stair assembly on the hanger pipe when installing to through bolt with hanger pipe and connecting piece fixed connection, realize fixing the hanger pipe on the crossbeam, realize the installation of stair assembly promptly, the integral erection is more convenient;

2. in the use, because the stair only has a junction on the hanger tube to make the stair can have better intensity, guarantee the use that the stair can be safe, reduced the potential safety hazard of stair.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the structure of a stair joint;

FIG. 3 is a schematic view of a three-dimensional structure of a stair joint;

FIG. 4 is a schematic structural view of a connector;

FIG. 5 is a schematic view of a construction of a hanger tube

Reference numerals: stair subassembly 1, crossbeam 2, hanger tube 3, connecting piece 4, bolt 5, floor 6, bolt hole 7, connecting hole 8, screw 9, angle steel 10, pipe chute 11, fixed plate 12, supporting platform 13, step 14.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 5, an assembled steel stair comprises a stair component 1 and a cross beam 2 arranged at the top of the stair component 1, wherein the cross beam 2 is horizontally arranged, and the cross beam 2 is arranged along the width direction of the stair component 1; the lower part of the beam 2 is provided with hanging pipes 3 corresponding to the two sides of the stair assembly 1, the end part of the stair assembly 1 is provided with connecting pieces 4 which are clamped with the hanging pipes 3, and the hanging pipes 3 are provided with bolts 5 which are connected with the connecting pieces 4.

The crossbeam 2 is installed and is fixed in stair entrance to a cave department, and crossbeam 2 is rectangular steel pipe, and the hanger pipe 3 welds on the lower surface of crossbeam 2, and hanger pipe 3 is rectangular steel pipe for fill the space between stair entrance to a cave crossbeam 2 and stair subassembly 1 top, connecting piece 4 welds in stair subassembly 1's tip, connecting piece 4 joint is on hanger pipe 3.

The stair assembly 1 comprises a supporting platform 13 which is obliquely arranged and a plurality of steps 14 which are arranged on the supporting platform, the connecting piece 4 is arranged at the top of the supporting platform 13, and the steps 14 are sequentially arranged on the supporting platform 13 from bottom to top.

The supporting platform 13 comprises two inclined pipes 11 which are arranged in parallel, and the step 14 is formed by splicing the angle steel 10 and the floor slab 6.

Angle steel 10 sets up on two pipe chute 11 along pipe chute 11 length direction, and floor 6 lays on the angle steel 10 of relative setting, and angle steel 10 kink department is right angle structure, and angle steel 10 on two pipe chute 11 corresponds the setting, and floor 6 all lays on angle steel 10's right angle edge, and angle steel 10's cross-section is rectangular structure.

The floor 6 is provided with a screw 9 connected with the angle steel 10 or the cross beam 2, the screw 9 is a cross countersunk head self-tapping screw, and the screw 9 is required to sink into the surface of the floor 6.

The connecting piece 4 is fixed to be set up in the top of pipe chute 11, and pipe chute 11 bottom is equipped with the fixed plate 12 that is used for fixing a position pipe chute 11, and fixed plate 12 is fixed in subaerial to fixed plate 12 is used for supporting the stair, ensures that the stair can not take place the skew in the use.

The connecting piece 4 is provided with the bolt hole 7 connected with the hanging pipe 3, the hanging pipe 3 is provided with the connecting hole 8 matched with the bolt hole 7, the bolt hole 7 corresponds to the connecting hole 8 one by one, and the size of the bolt hole 7 and the connecting hole 8 is matched with the size of the bolt 5, so that the connecting piece 4 at the top end of the stair assembly 1 is ensured not to shake after being connected with the hanging pipe 3 in the using process.

The hanging pipe 3 is vertically arranged at the bottom of the cross beam 2, the connecting piece 4 is of a U-shaped structure, the opening size of the connecting piece 4 corresponds to the size of the hanging pipe 3, when the hanging pipe 3 and the connecting piece 4 are assembled, the opening end of the U-shaped structure of the connecting piece 4 stretches into the hanging pipe 3, and the whole stair assembly 1 and the hanging pipe 3 can be directly assembled in the installation process, so that the stair can be installed more conveniently and rapidly.

The inclined tube 11 is connected to the middle of the connecting piece 4, so that the stress balance between the inclined tube 11 and the connecting piece 4 in the use process of the stair is ensured, the strength of the stair is improved, and the service life of the stair is prolonged.

In the practical use process, the steps and requirements for installing the stairs are as follows:

1. according to the actual size of the required stairs, producing a beam 2 and a hanging pipe 3 which are matched with the stairs, and pre-welding the hanging pipe 3 and the beam 2 in a factory;

2. manufacturing an adaptive connecting piece 4 according to the size of the hanging pipe 3, prefabricating the needed inclined pipe 11 and angle steel 10, and pre-welding the stair assembly 1 and the connecting piece 4 in a factory;

3. prefabricating and welding the inclined tube 11 of the stair assembly 1 and the angle steel 10 in a factory, then prewelding the stair assembly 1 and the connecting piece 4 in the factory, welding the bottom of the inclined tube 11 onto the fixed plate 12, and leveling and removing splashes after welding;

4. the cross beam 2 is connected with the main beams or the walls at the two sides of the stairs of the room by bolts 5, and the levelness of the cross beam 2 is measured and adjusted to ensure that the cross beam 2 is in a horizontal state;

5. inserting the connecting piece 4 into the hanging pipe 3, inserting the bolt 5 into the bolt hole 7 of the connecting piece 4 and the connecting hole 8 of the hanging pipe 3, and screwing and fixing;

6. punching holes at the ground installation stairs, and fastening a fixing plate 12 fixed at the lower end of the inclined tube 11 to the holes of the ground by bolts 5;

7. after the stair assembly 1 is installed, the floor slab 6 is sequentially installed on the right-angle edge of the angle steel 10 from bottom to top by using the screw 9;

8. the levelness of the floor slab 6 of the steel stair is regulated, and meanwhile, the flatness of the floor slab 6 is required to be less than or equal to 2mm;

9. the fixing screws 9 are required to sink into the surface of the floor 6.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more herein: the terms stair assembly 1, cross beam 2, hanger tube 3, connector 4, bolt 5, floor 6, bolt hole 7, connecting hole 8, screw 9, angle 10, chute 11, fixed plate 12, support platform 13, step 14, etc. do not exclude the possibility of using other terms. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.

Claims

1. The assembled steel stair comprises a stair component (1) and a cross beam (2) arranged at the top of the stair component (1), and is characterized in that the cross beam (2) is horizontally arranged, and the cross beam (2) is arranged along the width direction of the stair component (1); hanging pipes (3) corresponding to two sides of the stair assembly (1) are arranged below the cross beam (2), connecting pieces (4) clamped with the hanging pipes (3) are arranged at the ends of the stair assembly (1), and bolts (5) connected with the connecting pieces (4) are arranged on the hanging pipes (3).

2. A fabricated steel stairway according to claim 1, characterised in that the stairway assembly (1) comprises a supporting platform (13) arranged obliquely and a number of steps (14) arranged on the supporting platform (13), and the connecting piece (4) is arranged on top of the supporting platform (13).

3. A fabricated steel stairway according to claim 2, characterised in that the support platform (13) comprises two parallel inclined tubes (11), the steps (14) being spliced from angle steel (10) and floor (6).

4. A fabricated steel stairway according to claim 3, characterised in that the angle bars (10) are arranged on two of the inclined tubes (11) in the length direction of the inclined tubes (11), and that the floor slabs (6) are laid on the oppositely arranged angle bars (10).

5. A fabricated steel stairway according to claim 4, characterised in that the angle (10) is of right angle construction at the bend.

6. A fabricated steel stairway according to claim 4, characterised in that the floor (6) is provided with screws (9) connected to angle steel (10) or cross beam (2).

7. A fabricated steel stairway according to claim 3, characterised in that the connecting piece (4) is fixedly arranged on top of the down tube (11), and that the bottom of the down tube (11) is provided with a fixing plate (12) for positioning the down tube (11).

8. The fabricated steel stair according to claim 1, wherein the connecting piece (4) is formed with a bolt hole (7) connected with the hanging pipe (3), and the hanging pipe (3) is formed with a connecting hole (8) matched with the bolt hole (7).

9. The fabricated steel stair according to claim 1, wherein the hanging pipe (3) is vertically arranged at the bottom of the cross beam (2), the connecting piece (4) is of a U-shaped structure, and the opening size of the connecting piece (4) corresponds to the size of the hanging pipe (3).

10. A fabricated steel stairway according to claim 3, characterised in that the chute (11) is connected to the middle part of the connector (4).