Fabricated construction stair

Abstract

The utility model discloses an assembly type construction stair, and relates to the field of building construction, and the assembly type construction stair comprises a plurality of unit stair sections connected end to end; each unit stair section comprises at least one pedal, a first vertical plate is arranged on the uppermost portion of each unit stair section, and a second vertical plate is arranged on the lowermost portion of each unit stair section. A mounting through groove is formed in the back surface of the pedal on the lowermost layer, so that the unit stair section is preliminarily connected to a scaffold steel pipe; a mounting gap is formed between the groove wall of the mounting through groove and the second vertical plate; a first limiting piece and a second limiting piece are arranged on the mounting through groove; when the two adjacent unit stair sections are preliminarily connected to the scaffold steel pipe, the first vertical plate of the second unit stair section is inserted into the mounting gap of the first unit stair section; when the first limiting piece is in the limiting state, the first limiting piece and the second limiting piece are matched with each other to limit the scaffold steel pipe, and the second limiting piece is connected with the two unit stair sections; the device is high in safety and convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a prefabricated construction staircase. Background Art

[0002] Generally, the tread plates of the up-and-down pedestrian passages set at the construction site of building projects are mainly erected by using wooden formwork. Such pedestrian passage tread plates have the following problems: First, the disassembly and assembly processes are cumbersome, labor-consuming and time-consuming; Second, they are basically used once, with a low reuse rate, large material waste and poor aesthetics; Third, the wooden formwork is prone to slipping and falling in rainy days, posing a great safety hazard.

[0003] There are already related technologies that facilitate the use at construction sites by setting up prefabricated steel staircases. However, for the existing prefabricated staircases, during use, they usually need to be initially installed on the scaffolding first, then the connection between multiple sections of staircases is carried out, and finally, the positions of the staircase and the scaffolding are further positioned and reinforced through screws or other connectors. Due to the inconsistent connection positions between adjacent two sections of staircases and between the staircase and the scaffolding, it takes longer time or more manpower for operation, resulting in lower disassembly and installation efficiency. Summary of the Utility Model

[0004] Aiming at the deficiencies in the prior art, the utility model provides a prefabricated construction staircase, which is convenient for disassembly and installation and has high safety.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A prefabricated construction staircase includes a plurality of unit staircase sections connected end to end; each unit staircase section includes at least one tread plate, a first vertical plate extending upward from the tread plate is arranged at the uppermost part of the unit staircase section, and a second vertical plate extending downward from the tread plate is arranged at the lowermost part; an installation through groove is arranged on the back of the tread plate at the lowermost layer to initially connect the unit staircase section to the scaffolding steel pipe; an installation gap capable of accommodating the insertion of the first vertical plate is provided between the groove wall of the installation through groove and the second vertical plate; a first limiting member and a second limiting member are arranged on the installation through groove; when two adjacent unit staircase sections are both initially connected to the scaffolding steel pipe, the first vertical plate of the second unit staircase section is inserted into the installation gap of the first unit staircase section; when the first limiting member is in a limiting state, the first limiting member and the second limiting member cooperate with each other to limit the scaffolding steel pipe, and the second limiting member connects the two unit staircase sections.

[0007] Optionally, limiting holes are provided through the first vertical plate and the second vertical plate; a through hole is provided on the side wall of the installation through groove close to the second vertical plate; when the first vertical plate of the second unit staircase section is inserted into the installation gap of the first unit staircase section, the through hole and the limiting hole are coaxially aligned; the second limiting member is slidably connected in the through hole and can be inserted into the limiting holes of the two coaxial unit staircase sections under the action of an external force.

[0008] Optionally, the first limiting member is a tightening bolt; the second limiting member is a sliding rod; a first limiting flange is provided in the area close to the head of the sliding rod; the cross-sectional area of the first limiting flange is larger than the cross-sectional area of the through hole; when the tightening bolt is tightened, the first limiting flange abuts against the inner wall of the installation through groove, and the scaffolding steel pipe is limited between the tail of the tightening bolt and the head of the sliding rod, and the tail of the sliding rod is inserted into the limiting holes of the two coaxial unit staircase sections.

[0009] Optionally, the cross-sectional area of the limiting hole is larger than the cross-sectional area of the through hole; a second limiting flange is provided at the tail of the sliding rod, and the cross-sectional area of the second limiting flange is adapted to the limiting hole.

[0010] Optionally, a first arc-shaped clamping plate and a second arc-shaped clamping plate are further included, and the clamping surfaces of the first arc-shaped clamping plate and the second arc-shaped clamping plate face each other; the second arc-shaped clamping plate is connected to the end of the second limiting member close to the first limiting member, and the first arc-shaped clamping plate is rotatably connected to the end of the first limiting member close to the second limiting member.

[0011] Optionally, there are multiple first limiting members and second limiting members, and they are arranged along the length direction of the installation through groove; multiple first limiting members are connected to the first arc-shaped clamping plate, and multiple second limiting members are connected to the second arc-shaped clamping plate.

[0012] Optionally, an opening for the scaffolding steel pipe to enter and exit is provided on the surface of the installation through groove facing away from the pedal; a plugging plate capable of plugging the opening is detachably connected in the installation through groove.

[0013] Optionally, anti-slip strips are provided on the front surface of the pedal.

[0014] The beneficial effects of the present utility model are:

[0015] An installation through groove for initially connecting to a scaffolding steel pipe is provided on the back of the tread of the unit staircase section. A first limiting member and a second limiting member are arranged in the installation through groove. An installation gap is formed between the installation through groove and the second vertical plate. When two adjacent unit staircase sections are connected, the first vertical plate of the second unit staircase section is inserted into the installation gap of the first unit staircase section, thereby realizing the initial limit between the two unit staircase sections. The function of the second limiting member makes the connection between adjacent unit staircase sections more stable. The combined action of the first limiting member and the second limiting member keeps the unit staircase section and the scaffolding steel pipe stationary. In addition, after the first unit staircase section is stably connected to its corresponding scaffolding steel pipe, under the action of the second limiting member and the installation gap, the position of the second unit staircase section can be limited, thereby improving the integrity and stability of the present application. At the same time, by changing the state of the first limiting member, the unit staircase section can be disassembled, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the structure of the unit staircase section of the present utility model;

[0018] Figure 3 is a schematic diagram of the structure of the first limiting member in the limiting state of the present utility model.

[0019] In the figure, the labels are: 1 is the unit staircase section, 2 is the tread, 3 is the first vertical plate, 4 is the second vertical plate, 5 is the installation through groove, 51 is the through hole, 52 is the opening, 53 is the sealing plate, 6 is the first limiting member, 61 is the first arc-shaped clamping plate, 7 is the second limiting member, 71 is the first limiting flange, 72 is the second limiting flange, 73 is the second arc-shaped clamping plate, 8 is the limiting hole, 9 is the anti-slip strip, and 10 is the scaffolding steel pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be described in detail below with reference to the accompanying drawings.

[0021] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "rear", etc. cited in the utility model are only for the convenience of description and are not used to limit the scope of implementation of the present utility model. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present utility model.

[0022] As Figure 1 shown, a prefabricated construction staircase is provided, including a plurality of unit staircase sections 1 connected end to end; the unit staircase section 1 includes at least one tread 2.

[0023] It should be noted that although only one tread 2 is shown for each unit stair section 1 in the drawings, multiple treads 2 can actually be used.

[0024] A first upright plate 3 extending upward from the tread 2 is provided at the uppermost part of the unit stair section 1, and a second upright plate 4 extending downward from the tread 2 is provided at the lowermost part. An installation through slot 5 is provided on the back surface of the lowermost tread 2 to preliminarily connect the unit stair section 1 to the scaffolding steel pipe 10. Specifically, before the scaffolding steel pipe 10 is assembled with other steel pipes, the scaffolding steel pipe 10 is directly inserted into the installation through slot 5.

[0025] In some other embodiments, after the scaffolding steel pipe 10 is assembled with other steel pipes, an opening 52 capable of accommodating the entry and exit of the scaffolding steel pipe 10 is provided on the surface of the installation through slot 5 facing away from the tread 2. That is, the installation through slot 5 and the tread 2 form an n-shaped structure, and the opening 52 of the installation through slot 5 can straddle the scaffolding steel pipe 10. A plugging plate 53 capable of plugging the opening 52 is detachably connected in the installation through slot 5. The setting of the plugging plate 53 can prevent the scaffolding steel pipe 10 from falling off the installation through slot 5 after preliminary connection.

[0026] There is an installation gap between the groove wall of the installation through slot 5 and the second upright plate 4 capable of accommodating the insertion of the first upright plate 3. The installation through slot 5 is provided with a first limiting member 6 and a second limiting member 7. When two adjacent unit stair sections 1 are both preliminarily connected to the scaffolding steel pipe 10, the first upright plate 3 of the second unit stair section 1 is inserted into the installation gap of the first unit stair section 1. When the first limiting member 6 is in a limiting state, the first limiting member 6 and the second limiting member 7 cooperate with each other to limit the scaffolding steel pipe 10, and the second limiting member 7 connects the two unit stair sections 1. The function of the second limiting member 7 makes two adjacent unit stair sections 1 connected together. The combined action of the first limiting member 6 and the second limiting member 7 makes the connection between the unit stair section 1 and the scaffolding steel pipe 10 remain stationary, thereby ensuring the connection stability between the two unit stair sections 1 and the scaffolding steel pipe 10. At the same time, by changing the state of the first limiting member 6, the unit stair section 1 can be disassembled, and the operation is simple.

[0027] Specifically, as Figure 2 and 3As shown, limiting holes 8 are penetrated and provided on both the first vertical plate 3 and the second vertical plate 4; a through hole 51 is provided on the side wall of the installation through groove 5 close to the second vertical plate 4; when the first vertical plate 3 of the second unit staircase section 1 is inserted into the installation gap of the first unit staircase section 1, the through hole 51 and the limiting hole 8 are coaxial and collinear. The axis of the through hole 51 and the limiting hole 8 of the second vertical plate 4 is always on the same straight line. When the second unit staircase section 1 is inserted into the installation gap of the first unit staircase section 1, the limiting hole 8 on the first vertical plate 3 of the first unit staircase section 1 is located in the installation gap, so that the through hole 51 and the two limiting holes 8 of the two unit staircase sections 1 are in a coaxial and collinear state; the second limiting member 7 is slidably connected in the through hole 51, and under the pushing action of the scaffolding steel pipe 10, the second limiting member 7 is inserted into the coaxial limiting holes 8 of the two unit staircase sections 1.

[0028] More specifically, the first limiting member 6 is a tightening bolt; the second limiting member 7 is a sliding rod; a first limiting flange 71 is provided in the area close to the head of the sliding rod; the cross-sectional area of the first limiting flange 71 is larger than the cross-sectional area of the through hole 51; the cross-sectional direction of the first limiting flange 71 and the cross-sectional direction of the through hole 51 are the end face directions of the through hole 51; when the tightening bolt is tightened, the first limiting flange 71 abuts against the inner wall of the installation through groove 5, and the scaffolding steel pipe 10 is limited between the tail of the tightening bolt and the head of the sliding rod, and the tail of the sliding rod is inserted into the coaxial limiting holes 8 of the two unit staircase sections 1.

[0029] It should be noted that in some embodiments, the scaffolding steel pipe 10 is not assembled with other steel pipes. During the tightening process of the tightening bolt, the tightening bolt pushes the scaffolding steel pipe 10, so that the scaffolding steel pipe 10 pushes the sliding rod. When the first limiting flange 71 of the sliding rod abuts against the inner wall of the installation through groove 5, the limiting of the two unit staircase sections 1 by the sliding rod is in place. At this time, when the tightening bolt is tightened in place, the installation can be completed. When disassembling, reverse the tightening bolt to loosen it, and pull out the scaffolding steel pipe 10, then the unit staircase section 1 can be removed; in other embodiments, the scaffolding steel pipe 10 has been assembled with other steel pipes. During the process of limiting the scaffolding steel pipe 10 in the installation through groove 5 from the opening 52, by horizontally pushing and pulling the unit staircase section 1, the scaffolding steel pipe 10 can push the sliding rod to move in place (that is, the tail of the sliding rod is inserted into the coaxial limiting holes 8 of the two unit staircase sections 1). At this time, when the tightening bolt is tightened in place, it is okay. When disassembling, reverse the tightening bolt to loosen it, loosen the blocking plate 53, and then separate the unit staircase section 1 from above the scaffolding steel pipe 10, then the unit staircase section 1 can be removed to complete the disassembly.

[0030] Furthermore, the cross-sectional area of the limiting hole 8 is larger than that of the through hole 51; a second limiting flange 72 is provided at the tail of the sliding rod, and the cross-sectional area of the second limiting flange 72 is adapted to that of the limiting hole 8, that is, the second limiting flange 72 can pass through the limiting hole 8, but the second limiting flange 72 and the first limiting flange 71 are respectively located at both ends of the through hole 51 and neither can pass through the through hole 51. The setting of the second limiting flange 72 can prevent the second limiting member 7 from detaching from the installation through slot 5, thereby avoiding the loss of the second limiting member 7 during transportation.

[0031] In some other embodiments, the prefabricated construction staircase further includes a first arc-shaped clamping plate 61 and a second arc-shaped clamping plate 73; the clamping surfaces of the first arc-shaped clamping plate 61 and the second arc-shaped clamping plate 73 face each other; the second arc-shaped clamping plate 73 is connected to the end of the second limiting member 7 close to the first limiting member 6, and the first arc-shaped clamping plate 61 is rotatably connected to the end of the first limiting member 6 close to the second limiting member 7; the settings of the first arc-shaped clamping plate 61 and the second arc-shaped clamping plate 73 can increase the contact areas between the first limiting member 6, the second limiting member 7 and the scaffolding steel pipe 10 respectively, thereby improving the limiting effect on the scaffolding steel pipe 10.

[0032] In some other embodiments, there are multiple first limiting members 6 and multiple second limiting members 7, and they are arranged along the length direction of the installation through slot 5; correspondingly, there are multiple limiting holes 8 and multiple through holes 51 on the first vertical plate 3 and the second vertical plate 4; multiple first limiting members 6 are all rotatably connected to the first arc-shaped clamping plate 61, and multiple second limiting members 7 are connected to the second arc-shaped clamping plate 73; the number of the first limiting members 6 and the second limiting members 7 does not need to be too large, usually 2-6 are sufficient.

[0033] In some other embodiments, an anti-slip strip 9 is provided on the front surface of the pedal 2, and the anti-slip strip 9 can be fixed on the surface of the pedal 2 by means of bonding or screw connection, and the material of the anti-slip strip 9 can refer to the prior art.

[0034] In this specification, the various embodiments are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0035] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. An assembled construction staircase, characterized in that: The invention relates to a plurality of unit staircase sections (1) connected end to end; the unit staircase section (1) comprises at least one pedal (2); the uppermost portion of the unit staircase section (1) is provided with a first upright plate (3) extending upward from the pedal (2); the lowermost portion is provided with a second upright plate (4) extending downward from the pedal (2); a mounting groove (5) is provided on the back of the pedal (2) located at the lowermost layer so that the unit staircase section (1) is preliminarily connected to a scaffolding steel pipe (10); there is a groove wall of the mounting groove (5) and a second upright plate (4) capable of accommodating the first upright plate (3); ) is inserted into the installation gap; the installation groove (5) is provided with a first limiting member (6) and a second limiting member (7); when the two adjacent unit stair sections (1) are initially connected to the scaffolding steel pipe (10), the first upright plate (3) of the second unit stair section (1) is inserted into the installation gap of the first unit stair section (1); when the first limiting member (6) is in a limiting state, the first limiting member (6) and the second limiting member (7) cooperate with each other to limit the scaffolding steel pipe (10), and the second limiting member (7) connects the two unit stair sections (1).

2. The assembled construction staircase according to claim 1, characterized in that: The first upright plate (3) and the second upright plate (4) are both provided with a limiting hole (8); the side wall of the installation groove (5) close to the second upright plate (4) is provided with a through hole (51); when the first upright plate (3) of the second unit stair section (1) is inserted into the installation gap of the first unit stair section (1), the through hole (51) and the limiting hole (8) are coaxial and collinear; the second limiting member (7) is slidably connected in the through hole (51) and can be inserted into the collinear limiting holes (8) of the two unit stair sections (1) under the action of an external force.

3. The assembled construction staircase according to claim 2, characterized in that: The first limiting member (6) is a tightening bolt; the second limiting member (7) is a sliding rod; a first limiting flange (71) is provided near the head area of ​​the sliding rod; the cross-sectional area of ​​the first limiting flange (71) is greater than the cross-sectional area of ​​the through hole (51); when the tightening bolt is tightened, the first limiting flange (71) abuts against the inner wall of the installation groove (5), the scaffolding steel pipe (10) is limited between the tail of the tightening bolt and the head of the sliding rod, and the tail of the sliding rod is inserted into the colinear limiting holes (8) of the two unit stair sections (1).

4. The assembled construction staircase according to claim 3, characterized in that: The cross-sectional area of ​​the limiting hole (8) is greater than the cross-sectional area of ​​the through hole (51); a second limiting flange (72) is provided at the tail of the sliding rod, and the cross-sectional area of ​​the second limiting flange (72) is adapted to the limiting hole (8).

5. The assembled construction staircase according to claim 1, characterized in that: It also includes a first arc-shaped clamping plate (61) and a second arc-shaped clamping plate (73), wherein the clamping surfaces of the first arc-shaped clamping plate (61) and the second arc-shaped clamping plate (73) are opposite to each other; the second arc-shaped clamping plate (73) is connected to the end of the second limiting member (7) close to the first limiting member (6), and the first arc-shaped clamping plate (61) is rotatably connected to the end of the first limiting member (6) close to the second limiting member (7).

6. The assembled construction staircase according to claim 5, characterized in that: There are a plurality of the first limiting members (6) and the second limiting members (7), and they are arranged along the length direction of the mounting slot (5); a plurality of the first limiting members (6) are connected to the first arc-shaped clamping plate (61), and a plurality of the second limiting members (7) are connected to the second arc-shaped clamping plate (73).

7. The assembled construction staircase according to claim 1, characterized in that: An opening (52) capable of accommodating the entry and exit of a scaffolding steel pipe (10) is provided on a surface of the installation slot (5) facing away from the pedal (2); a blocking plate (53) capable of blocking the opening (52) is detachably connected to the installation slot (5).

8. The assembled construction staircase according to claim 1, characterized in that: The front side of the pedal (2) is provided with an anti-slip strip (9).

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