Width-adjustable prefabricated stair for fabricated building

Abstract

The utility model relates to the technical field of assembly type buildings, in particular to a width-adjustable prefabricated stair for an assembly type building, which comprises two support beams which are arranged in parallel and obliquely, and the two support beams are fixedly connected through a plurality of cross beams; a plurality of steps are arranged above the position between the two supporting beams, the steps are arranged at equal intervals in a step shape in the length direction of the supporting beams, at least two cross beams are arranged below each step, each step is composed of a plurality of wedge-shaped blocks arranged at equal intervals in the length direction of the cross beams, and a connecting base is arranged at the bottom of each wedge-shaped block. The connecting base is slidably installed on the cross beam. When the width-adjustable prefabricated stair for the building is used, each step is composed of a plurality of wedge-shaped blocks side by side, sliding of the wedge-shaped blocks on the cross beams is matched, the crossing length of the steps can be adjusted when the stair is installed, and the situation that the stair installation effect is poor due to production errors is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated buildings, in particular to a prefabricated staircase for prefabricated buildings with adjustable width. Background Art

[0002] A prefabricated building refers to a building in which a large amount of on-site work in the traditional construction method is transferred to the factory. Components and fittings for buildings (such as staircases, floor slabs, wall panels, staircases, balconies, etc.) are processed and manufactured in the factory and transported to the construction site, and then assembled and installed on-site through reliable connection methods.

[0003] When prefabricated staircases are produced, since the staircases need to be manufactured in the factory in advance and then moved to the construction site for installation, and the assembly of steel bars and subsequent concrete pouring are involved in the production of the staircases, dimensional errors are likely to occur during the production process. As a result, when the subsequent staircases are installed, there are gaps between their two sides and the surrounding area, affecting the installation effect of the prefabricated staircase. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned disadvantages in the prior art, and to propose a prefabricated staircase for prefabricated buildings with adjustable width.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: design a prefabricated staircase for prefabricated buildings with adjustable width, including two parallel and inclined support beams, and a plurality of cross beams are fixedly connected between the two support beams;

[0006] Above the two support beams, a plurality of steps are arranged in a stepped and equally spaced manner along the length direction of the support beams. At least two cross beams are provided below each step, and each step is composed of a number of wedge-shaped blocks arranged at equal intervals along the length direction of the cross beam. A connecting seat is provided at the bottom of each wedge-shaped block, and the connecting seat is slidably installed on the cross beam. Among them, the connecting seat is arranged near the middle of the wedge-shaped block.

[0007] Preferably, each wedge-shaped block is provided with a slot, and the slot penetrates the side surface of the wedge-shaped block along the length direction of the cross beam;

[0008] A hollow strip-shaped seat is arranged in the slot along the length direction of the cross beam. A chute is arranged on the side surface of the strip-shaped seat along the length direction of the strip-shaped seat, and a sliding seat is slidably installed on the chute. The sliding seats correspond to the wedge-shaped blocks one by one, and the sliding seat is fixed to the inner wall of the slot through a connecting frame.

[0009] Preferably, the cross section of the strip-shaped seat is polygonal, and the chute is correspondingly arranged on the side surface of the strip-shaped seat.

[0010] Preferably, the position of the front view projection of the sliding seat corresponds to the connecting seat.

[0011] Preferably, the wedge block is a concrete stone block.

[0012] Preferably, a support seat is installed on the wedge block at the bottom of the support beam, and a first support frame is installed at the bottom of the support seat, and the first support frame is fixed to the support beam;

[0013] A bearing seat is installed on the wedge block at the top of the support beam, and a second support frame is installed at the bottom of the bearing seat, and the second support frame is fixed to the support beam.

[0014] Preferably, the support beam is a steel frame with an "L"-shaped cross-section.

[0015] The beneficial effects of the design solution proposed by the present utility model in the application process are as follows:

[0016] 1. Each step of the width-adjustable precast staircase for prefabricated buildings is composed of multiple wedge blocks arranged side by side. By cooperating with the sliding of the wedge blocks on the cross beam, during the installation of the staircase, the wedge blocks can be horizontally moved, thereby adjusting the spanning length of the steps and avoiding the situation where the installation effect of the staircase is poor due to production errors.

[0017] 2. The width-adjustable precast staircase for prefabricated buildings limits the movement of the same wedge block through multiple chutes, enabling the wedge block to move horizontally stably and ensuring the smooth alignment of the surfaces of each step. Description of the Drawings

[0018] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0019] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0020] Figure 3 is the front view of the present utility model;

[0021] Figure 4 is the structural diagram of the strip seat of the present utility model.

[0022] In the figure: 1. Support beam; 2. Cross beam; 3. Wedge block; 4. Connecting seat; 5. Groove; 6. Strip seat; 7. Chute; 8. Sliding seat; 9. Connecting frame; 10. Support seat; 11. First support frame; 12. Bearing seat; 13. Second support frame. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0024] Referring to Figures 1 - 4 , a prefabricated staircase for prefabricated buildings with adjustable width includes two parallel and inclined support beams 1. The support beam 1 is a steel frame with an "L"-shaped cross-section, so that the support beam 1 has a larger bearing surface and improves the support strength of the support beam 1.

[0025] As Figure 1 and Figure 2 shown, the two support beams 1 are fixedly connected by multiple cross beams 2. Above the two support beams 1, a plurality of steps are arranged. The plurality of steps are arranged at equal intervals in a stepped manner along the length direction of the support beam 1 to form the required prefabricated staircase; each step is composed of a number of wedge-shaped blocks 3 arranged at equal intervals along the length direction of the cross beam 2. The wedge-shaped block 3 is a concrete stone block. A connecting seat 4 is provided at the bottom of each wedge-shaped block 3. The connecting seat 4 is slidably installed on the cross beam 2, so that the wedge-shaped block 3 can move along the length direction of the cross beam 2 on the cross beam 2 to adjust the length of the step.

[0026] Among them, the connecting seat 4 is arranged near the middle of the wedge-shaped block 3 to ensure that the wedge-shaped block 3 has sufficient moving space on the cross beam 2; and at least two cross beams 2 are provided below each step to provide more support for the wedge-shaped block 3 to ensure the stability of the wedge-shaped block 3.

[0027] As Figure 3 and Figure 4 shown, each wedge-shaped block 3 is provided with a slot 5, and the slot 5 penetrates the side surface of the wedge-shaped block 3 along the length direction of the cross beam 2; a hollow strip-shaped seat 6 is arranged in the slot 5 along the length direction of the cross beam 2, and a chute 7 is arranged on the side surface of the strip-shaped seat 6 along the length direction of the strip-shaped seat 6. A sliding seat 8 is slidably installed on the chute 7. The sliding seat 8 corresponds to the wedge-shaped block 3 one by one, and the position of the front view projection of the sliding seat 8 corresponds to the connecting seat 4. The sliding seat 8 is fixed to the inner wall of the slot 5 through a connecting frame 9 to build a connection and mutual support between all the wedge-shaped blocks 3 on each step; to provide additional support for the wedge-shaped block 3 on the cross beam 2 and further stabilize the wedge-shaped block 3 on the cross beam 2.

[0028] Specifically, when installing the precast staircase, a support base 10 is installed on the wedge-shaped block 3 at the bottom of the support beam 1, and a first support frame 11 is installed at the bottom of the support base 10. The first support frame 11 is fixed to the support beam 1. A bearing base 12 is installed on the wedge-shaped block 3 at the top of the support beam 1, and a second support frame 13 is installed at the bottom of the bearing base 12. The second support frame 13 is fixed to the support beam 1. That is, the support base 10 serves as a support member placed on the ground and stands on the ground, while the bearing base 12 is placed on the floor of the upper floor to place the staircase. Among them, both the support base 10 and the bearing base 12 are concrete blocks. After the staircase is placed, the wedge-shaped blocks 3 are placed in close contact with each other. If there should be no gap between the side of the staircase and the surrounding building, the wedge-shaped block 3 can be directly pushed to move, so as to make up for the above gap. Since the dimensional error generated during the production of the precast staircase is not too large, and each step contains multiple wedge-shaped blocks 3, multiple wedge-shaped blocks 3 on the same step can be adjusted simultaneously, so that only a small gap is left between two adjacent wedge-shaped blocks 3, which does not affect the subsequent secondary decoration project.

[0029] It should be noted that, as Figure 3 shown, the cross-section of the strip-shaped seat 6 is polygonal, and the sliding groove 7 is correspondingly opened on the side of the strip-shaped seat 6. The sliding seats 8 in multiple sliding grooves 7 can act on the movement of the same wedge-shaped block 3 simultaneously, so as to limit the wedge-shaped block 3 and ensure the stability of the wedge-shaped block 3 during movement, so that each step remains flat after movement adjustment.

[0030] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A prefabricated staircase for assembled buildings with adjustable width, characterized in that: It comprises two parallel and inclined support beams (1), wherein the two support beams (1) are fixedly connected via a plurality of cross beams (2); A plurality of steps are arranged above the two support beams (1), and the plurality of steps are arranged equidistantly in a stepped manner along the length direction of the support beam (1), and at least two cross beams (2) are arranged below each step, and each step is composed of a plurality of wedge blocks (3) equidistantly arranged along the length direction of the cross beam (2), and a connecting seat (4) is arranged at the bottom of each wedge block (3), and the connecting seat (4) is slidably mounted on the cross beam (2), wherein the connecting seat (4) is arranged near the middle of the wedge block (3).

2. The prefabricated staircase for assembled buildings with adjustable width according to claim 1, characterized in that: Each wedge block (3) is provided with a slot (5), and the slot (5) penetrates the side surface of the wedge block (3) along the length direction of the cross beam (2); A hollow strip seat (6) is arranged in the slot (5) along the length direction of the cross beam (2), and a slide groove (7) is arranged along the length direction of the strip seat (6) on the side surface of the strip seat (6), and a sliding seat (8) is slidably mounted on the slide groove (7), the sliding seat (8) corresponds to the wedge block (3) one by one, and the sliding seat (8) is fixed to the inner wall of the slot (5) through a connecting frame (9).

3. The prefabricated staircase for assembled buildings with adjustable width according to claim 2, characterized in that: The cross section of the strip seat (6) is polygonal, and the slide groove (7) is correspondingly arranged on the side surface of the strip seat (6).

4. The prefabricated staircase for assembled buildings with adjustable width according to claim 2, characterized in that: The position of the front projection of the sliding seat (8) corresponds to the connecting seat (4).

5. The prefabricated staircase for assembled buildings with adjustable width according to claim 2, characterized in that: The wedge-shaped blocks (3) are concrete stones.

6. The prefabricated staircase for assembled buildings with adjustable width according to claim 1, characterized in that: A support seat (10) is installed on the wedge-shaped block (3) located at the bottom of the support beam (1), and a first support frame (11) is installed at the bottom of the support seat (10), and the first support frame (11) is fixed to the support beam (1); A bearing seat (12) is installed on the wedge-shaped block (3) located at the top of the support beam (1), and a second support frame (13) is installed at the bottom of the bearing seat (12), and the second support frame (13) is fixed to the support beam (1).

7. The prefabricated staircase for assembled buildings with adjustable width according to claim 1, characterized in that: The support beam (1) is a steel frame with an L-shaped cross section.

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