阅读说明：本技术 一种折叠式楼梯 (Folding stair ) 是由 张天星 马明勇 张立华 于 2020-05-18 设计创作，主要内容包括：本发明提供了一种折叠式楼梯,包括安装板、上楼梯组合、下楼梯组合、转向踩踏板、连杆组合、油丝绳和滑轮组,所述的安装板与天花板底面固定连接,所述的安装板使用铰接轴与上楼梯组合连接,上楼梯组合与下楼梯组合之间也通过铰接轴连接,上楼梯组合和下楼梯组合之间设有转向踩踏板,所述的转向踩踏板使用连杆组合与安装板旋转连接,所述的下楼梯组合和连杆组合通过油丝绳与安装板上的滑轮组连接,本发明结构简单,使用方便,安装和拆卸方便,利用卷扬机作为动力系统,限位准确,结构稳固,大大提高了楼梯施工时间及质量的保证,从而减少不必要费用的产生,提高了工作效率。(The invention provides a folding stair, which comprises a mounting plate, an upstairs combination, a downstairs combination, a steering pedal, a connecting rod combination, an oil wire rope and a pulley block, wherein the mounting plate is fixedly connected with the bottom surface of a ceiling, the mounting plate is connected with the upstairs combination by using a hinged shaft, the upstairs combination is also connected with the downstairs combination by using a hinged shaft, the steering pedal is arranged between the upstairs combination and the downstairs combination, the steering pedal is rotationally connected with the mounting plate by using the connecting rod combination, and the downstairs combination and the connecting rod combination are connected with the pulley block on the mounting plate by using the oil wire rope. The working efficiency is improved.)

1. A folding stair comprises a mounting plate (1), an upstairs combination (2), a downstairs combination (3), a steering pedal (4), a connecting rod combination (5), an oil wire rope (6) and a pulley block (7), it is characterized in that the mounting plate (1) is fixedly connected with the bottom surface of the ceiling, the mounting plate (1) is connected with the stair ascending combination (2) by using a hinge shaft (8), the stair ascending combination (2) is connected with the stair descending combination (3) by the hinge shaft (8), a steering pedal (4) is arranged between the stair ascending combination (2) and the stair descending combination (3), the steering pedal (4) is rotationally connected with the mounting plate (1) by a connecting rod combination (5), the downstairs combination (3) and the connecting rod combination (5) are connected with a pulley block (7) on the mounting plate (1) through an oil wire rope (6); the connecting rod combination (5) comprises four same connecting rod arms (11), and the upper end and the lower end of each connecting rod arm (11) are respectively connected with the side surfaces of the mounting plate (1) and the steering pedal (4) through hinged plates (12); the connecting device is characterized in that a transverse arm (13) is hinged between the connecting arms (11), and one end of the transverse arm (13) is connected with a limiting pulley block (9) on the mounting plate (1) through an oil wire rope (6).

2. A foldable staircase according to claim 1, characterised in that the outer side of the hinge of the staircase ascending assembly (2) and the mounting plate (1) is provided with a limiting groove (10).

3. A collapsible stairway as claimed in claim 1, characterised in that the wick (6) is connected to a turbo winch which is operated by manual or electrical control, by being passed around a pulley block (7).

4. A collapsible stairway as claimed in claim 1, wherein the upstairs (2) and downstairs (3) comprise holding panels (14) and step panels (15), and a plurality of evenly distributed step panels (15) are fixedly connected between the holding panels (14).

5. A collapsible stairway as claimed in claim 4 wherein the cross-section of the step panel (15) is right triangular and the angle of the step panel (15) ensures that the long right-angled edge is parallel to the ground when the stairway is opened.

6. A collapsible stairway as claimed in claim 1, characterised in that the sum of the widths of the upstairs (2) and downstairs (3) is equal to the width of the turning tread (4).

7. A collapsible stairway according to claim 1, characterised in that the mounting plate (1) is provided with notches (16) for cooperation with the upstairs (2).

Technical Field

The invention relates to the technical field of stairs, in particular to a folding stair.

Background

The known staircases are assembled and welded on site, often occupy large space and cannot ensure construction time and quality. Meanwhile, in the field of building construction, stairs are generally required to be arranged in areas with potential danger at large local fall positions of building construction sites. In the prior art, the stair of marking time is set up usually with fastener type steel pipe system, but set up the stair of marking time with this kind of fastener type steel pipe system can produce some problems: the assembling and disassembling time is long; when the mobile terminal is moved, the mobile terminal needs to be assembled and disassembled again, so that the mobile terminal is not suitable for turnover; the anti-skid performance is too poor; the top and bottom nodes are not firmly fixed and are easy to slide.

Disclosure of Invention

The invention provides a folding stair which is simple in structure, convenient to use, mount and dismount, accurate in limiting and stable in structure by using a winch as a power system, greatly improves the construction time and quality of the stair, reduces the generation of unnecessary cost and improves the working efficiency.

In order to solve the technical problem, the embodiment of the application provides a foldable stair, including mounting panel, the combination of going up the stair, the combination of going down the stair, turn to pedal, connecting rod combination, oil silk rope and assembly pulley, mounting panel and ceiling bottom surface fixed connection, the mounting panel use articulated shaft and go up the stair combination to be connected, go up the stair combination and also through articulated shaft connection between the combination of going down the stair, go up and be equipped with between the combination of stair and the combination of going down the stair and turn to pedal, turn to pedal and use connecting rod combination and mounting panel swivelling joint, combination of going down the stair and connecting rod combination pass through the oil silk rope and be connected with the assembly pulley on the mounting panel.

As a preferred embodiment of the scheme, the connecting rod combination comprises four same connecting rod arms, and the upper end and the lower end of each connecting rod arm are respectively connected with the mounting plate and the side surface of the steering pedal through hinge plates.

As the preferred embodiment of the scheme, a transverse arm is hinged between the link arms, and one end of the transverse arm is connected with the limiting pulley block on the mounting plate through an oil wire rope.

As the preferred embodiment of this scheme, the stair of going up combination and mounting panel articulated department outside be equipped with spacing groove.

As a preferred embodiment of the scheme, the oil wire rope is connected with the turbine type winch by bypassing the pulley block, and the turbine type winch works through manual or electric control.

As the preferred embodiment of this scheme, the combination of going upstairs and going downstairs combination include grip block and step board, the grip block between fixedly connected with polylith evenly distributed's step board.

As the preferred embodiment of this scheme, step board cross-section be right triangle-shaped, step board angle guarantee the long right-angle side and the state of being parallel to ground after the stair are opened.

As a preferred embodiment of the scheme, the sum of the widths of the stair ascending combination and the stair descending combination is equal to the width of the steering pedal.

As a preferred embodiment of the present solution, the mounting plate 1 is provided with a notch 16 matched with the stair climbing combination 2.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

the stair lifting mechanism is simple in structure, convenient to use, convenient to install and detach, accurate in limiting and stable in structure, the winch is used as a power system, the construction time of the stair and the quality of the stair are greatly improved, unnecessary cost is reduced, and working efficiency is improved.

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 described below, and it is obvious that the drawings in the following description are only 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 schematic structural diagram of an embodiment of the present application;

FIG. 2 is a detail view and connecting rod assembly view of an embodiment of the present application;

FIG. 3 is a stair assembly view of an embodiment of the present application;

FIG. 4 is a top view of an embodiment of the present application;

the figure indicates that 1, a mounting plate, 2, a stair climbing combination, 3, a stair descending combination, 4, a steering pedal, 5, a connecting rod combination, 6, a wire rope, 7, a pulley block, 8, a hinge shaft, 9, a limiting pulley block, 10, a limiting groove, 11, a connecting rod arm, 12, a hinge plate, 13, a transverse arm, 14, a clamping plate, 15, a step plate, 16 and a notch.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Referring to fig. 1-4, a folding stair comprises a mounting plate 1, an ascending stair combination 2, a descending stair combination 3, a steering treadle 4, a connecting rod combination 5, an oil wire rope 6 and a pulley block 7, wherein the mounting plate 1 is fixedly connected with the bottom surface of a ceiling, the mounting plate 1 is connected with the ascending stair combination 2 through a hinge shaft 8, the ascending stair combination 2 is connected with the descending stair combination 3 through the hinge shaft 8, the steering treadle 4 is arranged between the ascending stair combination 2 and the descending stair combination 3, the steering treadle 4 is rotatably connected with the mounting plate 1 through the connecting rod combination 5, and the descending stair combination 3 and the connecting rod combination 5 are connected with the pulley block 7 on the mounting plate 1 through the oil wire rope 6.

In practical application, the connecting rod assembly 5 comprises four identical connecting rod arms 11, the upper end and the lower end of each connecting rod arm 11 are respectively connected with the mounting plate 1 and the side surface of the steering pedal 4 through the hinge plates 12, and the steering pedal is pulled through the connecting rod assembly and kept in a horizontal state.

In practical application, a transverse arm 13 is hinged between the link arms 11, one end of the transverse arm 13 is connected with a limiting pulley block 9 on the mounting plate 1 through an oil wire rope 6, and the transverse displacement of the steering pedal is limited by using the limiting pulley block to prevent the transverse displacement from causing instability due to the outward floating.

In practical application, the outer side of the hinged part of the stair climbing combination 2 and the mounting plate 1 is provided with a limiting groove 10, and when the stair is in a closed state, the stair can be closed in place without excessive rotation.

In practical application, the oil wire rope 6 bypasses the pulley block 7 to be connected with the turbine type winch, and the turbine type winch works under manual or electric control, so that the mounting and dismounting efficiency is improved.

In practical application, the ascending stair combination 2 and the descending stair combination 3 comprise clamping plates 14 and step plates 15, and a plurality of uniformly distributed step plates 15 are fixedly connected between the clamping plates 14.

In practical application, the cross section of the step plate 15 is a right triangle, and the angle of the step plate 15 ensures that the long right-angle edge is parallel to the ground after the stair is opened, so that the stair can walk conveniently.

In practical application, the sum of the widths of the stair ascending combination 2 and the stair descending combination 3 is equal to the width of the steering pedal 4, so that the convenience of going upstairs and downstairs is ensured.

In practical application, the mounting plate 1 is provided with a notch 16 matched with the stair climbing combination 2; ensure that the user can go upstairs normally.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.