CN216196141U

CN216196141U - Assembled prestressed beam type light stair

Info

Publication number: CN216196141U
Application number: CN202120932380.8U
Authority: CN
Inventors: 张丰川; 彭彦武; 宋英立; 何博; 李柏生; 汪发柱
Original assignee: Gansu Tianshui Green Prefabricated Construction Industry Development Co ltd
Current assignee: Gansu Tianshui Green Prefabricated Construction Industry Development Co ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-04-05
Anticipated expiration: 2031-04-30

Abstract

The utility model provides an assembled prestressed beam type light stair which comprises an upper stair beam and a lower stair beam, wherein a stair board is obliquely arranged between the upper stair beam and the lower stair beam, the stair board is formed by splicing two half stair boards, a plurality of stepping platforms are arranged on the upper surface of the stair board along the length direction of the stair board, a plurality of through holes penetrating through the stair board are formed in one side of the stair board along the length direction of the stair board, steel ropes in a tensioned state are arranged in the through holes, one end of each steel rope is provided with a tensioning piece, the other end of each steel rope is provided with a clamping piece, and the tensioning piece and the clamping pieces are respectively positioned at two ends of the through holes. The whole stair plate is formed by splicing the two half stair plates, so that the lifting is convenient and quick, and the labor is greatly saved; the through holes are arranged in the stair boards, and the steel ropes in a tensioned state are arranged in the through holes, so that the strength of the whole stair board is ensured, and the stair board is firm and durable; the steel rope is tensioned through the tensioning piece, so that the operation mode is simple; simple structure and low cost.

Description

Assembled prestressed beam type light stair

Technical Field

The utility model belongs to the technical field of assembly type buildings, and relates to an assembly type prestressed beam type light stair.

Background

In the building structure of the prior scissor stair, the scissor stair and the ladder partition wall are mostly manufactured in a cast-in-place mode, the molding quality of the scissor stair and the ladder partition wall manufactured in the cast-in-place mode is difficult to ensure, plastering is needed again in the later stage, and the production cycle is long. Compared with a cast-in-place mode, the prefabricated component has high forming quality, can reach the level of fair-faced concrete, does not need to carry out procedures such as plastering construction again in the later stage, and has short production period, so that the prefabricated assembled scissors ladder is more favored by people. However, current prefabricated assembled stair are mostly board-like scissors ladder, and board-like scissors ladder exists dead weight, drawback with high costs, has higher requirement to the lifting and hoisting machine. The existing stair partition wall is mostly formed by masonry construction, and the problems of complex procedures, much time consumption, high cost, difficulty in ensuring quality and the like exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an assembled prestressed beam type light stair aiming at the problems in the prior art.

Therefore, the utility model adopts the following technical scheme:

the assembled prestressed beam type light stair comprises an upper stair beam and a lower stair beam, wherein a stair board which is obliquely arranged is arranged between the upper stair beam and the lower stair beam, the stair board is formed by splicing two half stair boards, a plurality of stepping platforms are arranged on the upper surface of the stair board along the length direction of the stair board, a plurality of through holes penetrating through the stair board are formed in one side of the stair board along the length direction of the stair board, steel ropes in tensioning states are arranged in the through holes, one ends of the steel ropes are provided with tensioning pieces, the other ends of the steel ropes are provided with clamping pieces, and the tensioning pieces and the clamping pieces are respectively located at two ends of the through holes.

Further, the tensioning piece comprises a fixing block which is of a cylindrical structure and is matched with the through hole, a clamping table is arranged at the outer end of the fixing block and abuts against the edge of the through hole, a counter bore is further formed in the outer end of the fixing block, a first screw hole penetrating through the fixing block is formed in the counter bore, a screw rod is arranged in the first screw hole, the inner end of the screw rod is connected with the steel rope, and a hexagonal rod used for rotating the screw rod is fixed at the outer end of the screw rod.

The clamping piece comprises a clamping block, a rope penetrating hole is formed in the middle of the clamping block, the steel rope penetrates through the rope penetrating hole, and a limiting block is fixed at the outer end of the steel rope.

Furthermore, the upper end and the lower end of the stair tread are respectively fixed with a connecting plate which is horizontally arranged, the connecting plate is provided with a mounting hole, the upper surfaces of the upper stair beam and the lower stair beam are provided with a second screw hole which is opposite to the mounting hole, a bolt is installed in the second screw hole, and the bolt penetrates through the mounting hole.

The utility model has the beneficial effects that: the whole stair plate is formed by splicing the two half stair plates, so that the lifting is convenient and quick, and the labor is greatly saved; the through holes are arranged in the stair boards, and the steel ropes in a tensioned state are arranged in the through holes, so that the strength of the whole stair board is ensured, and the stair board is firm and durable; the steel rope is tensioned through the tensioning piece, so that the operation mode is simple; simple structure and low cost.

Drawings

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

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a partial enlarged view of portion B of FIG. 1;

in the figure, 1-stair climbing beam, 2-stair descending beam, 3-stair tread, 301-half stair tread, 4-stepping platform, 5-through hole, 6-steel rope, 7-tensioning piece, 701-fixing block, 702-clamping platform, 703-counter bore, 704-first screw hole, 705-screw rod, 706-hexagonal rod, 8-clamping piece, 801-clamping block, 802-rope threading hole, 803-limiting block, 9-connecting plate, 10-mounting hole, 11-second screw hole and 12-bolt.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

as shown in fig. 1-4, an assembled prestressed beam type light stair comprises an upper stair beam 1 and a lower stair beam 2, wherein the upper stair beam 1 and the lower stair beam 2 are arranged at a position for mounting a stair for mounting the stair, a stair plate 3 is obliquely arranged between the upper stair beam 1 and the lower stair beam 2, the stair plate 3 is formed by splicing two half stair plates 301, the half stair plates 301 are consistent in shape, and are lighter in weight and smaller in size, so that the assembled prestressed beam type light stair is more convenient and quicker to mount compared with a way of directly hoisting and lifting a whole stair, the upper surface of the stair plate 3 is provided with a plurality of stepping platforms 4 along the length direction, one side of the stair plate 3 is provided with a plurality of through holes 5 penetrating through the stair plate 3 along the length direction, steel ropes 6 in a tensioned state are arranged in the through holes 5, the steel ropes 6 are used for splicing and fixing the two half stair plates 301, one end of the steel ropes 6 is provided with tensioning members 7, and the other end is provided with clamping members 8, the tension member 7 and the clamping member 8 are respectively positioned at two ends of the through hole 3.

The tensioning piece 7 comprises a fixing block 701 which is of a cylindrical structure and is matched with the through hole 3, a clamping table 702 is arranged at the outer end of the fixing block 701, the clamping table 702 abuts against the edge of the outer end of the through hole 3, a counter bore 703 is further arranged at the outer end of the fixing block 701, a first screw hole 704 penetrating through the fixing block 701 is arranged in the counter bore 703, a screw rod 705 is arranged in the first screw hole 704, the inner end of the screw rod 705 is connected with the steel rope 6, and a hexagonal rod 706 used for rotating the screw rod 705 is fixed at the outer end of the screw rod 705.

The clamping piece 8 comprises a clamping block 801, a rope through hole 802 is formed in the middle of the clamping block 801, the steel rope 6 penetrates through the rope through hole 802, a limiting block 803 is fixed to the outer end of the steel rope 6, and the steel rope 6 can be prevented from moving into the through hole 3 under the action of external force through the limiting block 803.

In addition, the upper end and the lower extreme of stair tread 3 are respectively fixed with one and are the connecting plate 9 of level setting, and connecting plate 9 is used for going up stair tread 3 fixed mounting on ladder beam 1 and lower ladder beam 2, is equipped with mounting hole 10 on the connecting plate 9, and the upper surface of going up ladder beam 1 and lower ladder beam 2 is equipped with the second screw 11 of using relatively with mounting hole 10, installs bolt 12 in the second screw 11, and bolt 12 passes from mounting hole 11, is fixed in on ladder beam 1 and lower ladder beam 2 connecting plate 9 through bolt 12.

Above-mentioned connecting plate 9 and platform 4 of marking time all set up on half stair board 301, can constitute the connecting plate 9 and the platform 4 of marking time of accomplishing after half stair board 301 splices.

The installation and use modes of the utility model are as follows:

firstly, respectively hoisting two half-stair plates 301 to corresponding positions, wherein the hoisting process is convenient and rapid because the half-stair plates 301 are light in weight and small in size, the two half-stair plates 301 are abutted and spliced, bolts 12 penetrate through mounting holes 10 and are arranged in second screw holes 11 to fix the half-stair plates 301 on an upper stair beam 1 and a lower stair beam 2, after the installation is completed, concrete can be used for flatting the bolts 12 protruding from a connecting plate 9 field, then a clamping block 801 is placed at one end of a through hole 3, a steel rope 6 penetrates through a rope penetrating hole 802, a screw 705 is pushed to the other end of the through hole 3 by adopting tools such as a long rod and the like, then the fixing block 701 is prevented from being arranged at the end part of the through hole 3, the screw 705 is placed in a first screw hole 704, a hexagonal rod 706 is rotated by adopting tools such as a spanner and the like to tighten the screw 705 to enable the steel rope 6 to be in a tensioned state, the whole installation process is convenient and rapid, and the tensioned steel rope 6 can ensure the strength of the whole stair plates 3, in addition, as the clamping block 701 is provided with the counter bore 703, the hexagonal rod 706 is positioned in the counter bore 703 and does not protrude, so that the beauty of the whole stair tread 3 is kept.

Claims

1. The assembled prestressed beam type light stair is characterized by comprising an upper stair beam and a lower stair beam, wherein a stair board which is obliquely arranged is arranged between the upper stair beam and the lower stair beam, the stair board is formed by splicing two half stair boards, a plurality of stepping platforms are arranged on the upper surface of the stair board along the length direction of the stair board, a plurality of through holes penetrating through the stair board are formed in one side of the stair board along the length direction of the stair board, a steel rope in a tensioning state is arranged in each through hole, a tensioning piece is arranged at one end of the steel rope, a clamping piece is arranged at the other end of the steel rope, and the tensioning piece and the clamping piece are respectively located at two ends of each through hole.

2. The assembled prestressed beam type light stair of claim 1, wherein the tensioning member comprises a fixing block which is of a cylindrical structure and is matched with the through hole, a clamping table is arranged at the outer end of the fixing block and abuts against the edge of the through hole, a counter bore is further formed in the outer end of the fixing block, a first screw hole penetrating through the fixing block is formed in the counter bore, a screw rod is arranged in the first screw hole, the inner end of the screw rod is connected with the steel rope, and a hexagonal rod for rotating the screw rod is fixed at the outer end of the screw rod.

3. The assembled prestressed girder type light stairway as claimed in claim 1, wherein said fastening member includes a fastening block, a threading hole is formed at a middle portion of said fastening block, said steel cable is threaded through said threading hole, and a stopper block is fixed to an outer end of said steel cable.

4. The assembled prestressed girder type light stairway as claimed in claim 1, wherein said stair step plates are fixed at upper and lower ends thereof with a horizontally disposed connecting plate, said connecting plate having a mounting hole, said upper and lower stair girders having second screw holes for being opposite to said mounting hole, said second screw holes having bolts inserted therethrough.