Prefabricated stair capable of being quickly disassembled and assembled for fabricated building

Abstract

The utility model relates to the technical field of prefabricated stairs, in particular to a prefabricated stair capable of being quickly disassembled and assembled for an assembly type building. The technical problems that most existing prefabricated stairs are formed at a time through steel molds, after installation is completed, when the prefabricated stairs need to be maintained or replaced, the dismounting method is tedious, and therefore the utilization rate of the prefabricated stairs is affected are solved. According to the technical scheme, the assembly type building prefabricated stair capable of being rapidly disassembled and assembled comprises a first mounting module, a connecting module, a second mounting module, a supporting module and a protection module, according to the distance between a second prefabricated step and a third prefabricated step after positioning and connecting are completed, a telescopic column moves along a telescopic sleeve by adjusting a positioning bolt, and the second prefabricated step and the third prefabricated step can be assembled and disassembled. And the telescopic columns are connected with the second prefabricated step and the third prefabricated step in a positioning mode through the first connecting grooves and the second connecting grooves, then positioning bolts penetrate through round holes to be tightened and fixed, and therefore the prefabricated stairs can be stably supported.

Description

Technical Field

[0001] The utility model relates to the technical field of precast stairs, in particular to a precast stair for assembled buildings that can be quickly disassembled and assembled. Background Technique

[0002] The precast stair for assembled buildings refers to a stair component that is precast in a factory and partially or fully assembled, and then transported to the construction site for installation and adjustment. This kind of precast stair is usually made of precast concrete or other materials, and can be customized in different shapes, sizes and styles according to design requirements. The production quality of the precast stair is strictly controlled, which can ensure the structural stability and safety. In assembled buildings, the use of precast stairs can reduce the on-site construction time, improve the construction efficiency, and at the same time reduce the clutter at the construction site and the generation amount of construction waste. Therefore, the precast stairs for assembled buildings are widely used in modern buildings. Most of the existing precast stairs are formed by steel molds at one time. After the installation is completed, when the precast stair needs to be repaired or replaced, the disassembly method is relatively cumbersome, which affects the utilization rate of the precast stair. Therefore, we propose a precast stair for assembled buildings that can be quickly disassembled and assembled to solve the problems mentioned above. Content of the Utility Model

[0003] In order to overcome the problem that most of the existing precast stairs are formed by steel molds at one time, and after the installation is completed, when the precast stair needs to be repaired or replaced, the disassembly method is relatively cumbersome, which affects the utilization rate of the precast stair.

[0004] The technical solution of the utility model is: a precast stair for assembled buildings that can be quickly disassembled and assembled, including a first installation module, a connection module, a second installation module, a support module and a protection module; on one side above the first installation module, there is a second installation module for fixedly connecting with the building ground. Between the first installation module and the second installation module, a plurality of connection modules for connecting the first installation module and the second installation module are stacked upwards in sequence along the edge. Three support modules for supporting and stabilizing the precast stair are horizontally penetrated at the lower edge on one side of the connection module and the second installation module. Protection modules for protecting people's safety from falling are symmetrically installed at the upper ends of the first installation module and the second installation module.

[0005] Preferably, after the precast stairs are assembled, the rectangular clamping block first drives the telescopic sleeve to be positioned and connected to the first precast step and the second precast step through the first rectangular groove and the second rectangular groove. Then, according to the distance between the second precast step and the third precast step after the positioning connection is completed, by adjusting the positioning bolt, the telescopic column moves along the telescopic sleeve until the telescopic column is positioned and connected to the second precast step and the third precast step through the first connection groove and the second connection groove. Then, the positioning bolt passes through the round hole and is tightened and fixed, so as to stably support the precast stairs. Then, the column is fixedly connected to the first precast step and the third precast step through the first clamping hole and the second clamping hole, and then tightened and fixed by the nut. The protective rod can protect people from falling and reduce accidents.

[0006] Preferably, the first installation module includes a first installation plate and a first precast step. A first installation plate is installed on the side of the first precast step away from the connection module. Two groups of first installation holes for bolts to pass through are horizontally opened on the first installation plate. Three groups of first positioning holes for positioning and connecting the connection module are horizontally opened at the edge of the first precast step above and away from the first installation plate. At both ends of the first precast step away from the first positioning hole, first clamping holes for installing the protection module are respectively opened. Three groups of first rectangular grooves for positioning and connecting the support module are horizontally opened on the side of the first precast step away from the first installation plate. The first installation plate is fixedly connected to the building floor by bolts passing through the first installation holes, improving the stability of the precast stairs.

[0007] Preferably, the connection module includes a second precast step and a first positioning column. Three groups of second positioning holes for positioning and connecting the first positioning column are horizontally opened at the edge of the second precast step above and close to the second installation module. A first positioning column is installed corresponding to the second positioning hole at the edge of the lower end of the second precast step close to the first installation module. A first connection groove for positioning and connecting the support module is correspondingly opened at the edge of the lower side of the second precast step away from the first positioning column and corresponding to the support module. A second rectangular groove for positioning and connecting the support module is correspondingly opened on the side of the second precast step away from the first installation module and corresponding to the support module. According to the height of the precast stairs to be installed inside the building, the first positioning column drives the second precast step to be positioned and connected to the first precast step and the second precast step through the first positioning hole and the second positioning hole. Thus, the positioning connection is continuously repeated and stacked to assemble into a suitable height, improving the applicability of the precast stairs.

[0008] Preferably, the second installation module includes a third prefabricated step, a second positioning post, and a second installation plate. A second installation plate is installed on one side of the third prefabricated step away from the second prefabricated step. Two groups of second installation holes for bolts to pass through are transversely formed on the second installation plate. Second clamping holes for installing the protection module are formed at both ends above the third prefabricated step. A second positioning post is correspondingly installed at the edge of the lower end of the third prefabricated step on the side away from the second installation plate corresponding to the second positioning hole. A second connection groove for positioning and connecting the support module is formed on the side edge of the lower part of the third prefabricated step away from the second positioning post corresponding to the support module. The second positioning post drives the third prefabricated step to be positioned and connected with the second prefabricated step through the second positioning hole. The second installation plate is fixedly connected to the building floor by bolts passing through the second installation holes, improving the stability of the precast staircase.

[0009] Preferably, the support module includes a rectangular clamping block, a telescopic sleeve, a positioning bolt, and a telescopic column. A rectangular clamping block is installed at one end of the telescopic sleeve. The telescopic column is sleeved inside the telescopic sleeve. The rectangular clamping block first drives the telescopic sleeve to be positioned and connected with the first prefabricated step and the second prefabricated step through the first rectangular groove and the second rectangular groove.

[0010] Preferably, a positioning bolt is provided at the connection between the telescopic sleeve and the telescopic column. Multiple groups of round holes for the positioning bolt to pass through are linearly formed on the telescopic column. Then, according to the distance between the second prefabricated step and the third prefabricated step after the positioning connection is completed, by adjusting the positioning bolt, the telescopic column moves along the telescopic sleeve until the telescopic column is positioned and connected with the second prefabricated step and the third prefabricated step through the first connection groove and the second connection groove, and then the positioning bolt passes through the round hole and is tightened and fixed, thereby stably supporting the precast staircase.

[0011] Preferably, the protection module includes columns, nuts, and guardrails. Two groups of columns are transversely provided. Two groups of guardrails are linearly installed between the two groups of columns. Nuts are sleeved outside the lower ends of the columns. The columns are fixedly connected to the first prefabricated step and the third prefabricated step through the first clamping hole and the second clamping hole, and then tightened and fixed by the nuts. The guardrails can protect people from falling and reduce accidents.

[0012] The beneficial effects of the present utility model:

[0013] 1. Different from the situation where most precast stairs in the past were formed in one piece using steel molds and the disassembly method was rather cumbersome when the precast stairs needed to be repaired or replaced after installation, which affected the utilization rate of the precast stairs, the first mounting plate is first fixedly connected to the building floor by bolts passing through the first mounting holes. Then, according to the height of the precast stairs to be installed inside the building, the first positioning column drives the second precast step to be positioned and connected to the first precast step and the second precast step through the first positioning hole and the second positioning hole. By continuously repeating and stacking the positioning connections, an appropriate height is assembled. Then, the second positioning column drives the third precast step to be positioned and connected to the second precast step through the second positioning hole, and the second mounting plate is fixedly connected to the building floor by bolts passing through the second mounting holes, thereby forming a precast stair suitable for the internal height of the building.

[0014] 2. After the precast stairs are assembled, the rectangular block first drives the telescopic sleeve to be positioned and connected to the first precast step and the second precast step through the first rectangular groove and the second rectangular groove. Then, according to the distance between the second precast step and the third precast step after the positioning connection is completed, by adjusting the positioning bolt, the telescopic column moves along the telescopic sleeve until the telescopic column is positioned and connected to the second precast step and the third precast step through the first connection groove and the second connection groove, and then the positioning bolt passes through the round hole and is tightened and fixed. Thus, the precast stairs can be stably supported. Then, the column is fixedly connected to the first precast step and the third precast step through the first clamping hole and the second clamping hole, and then tightened and fixed by nuts. The protective rod can protect people from falling and reduce the occurrence of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the overall structure of the present utility model from another angle;

[0017] Figure 3 is a schematic diagram of the structure of the first mounting module of the present utility model;

[0018] Figure 4 is a schematic diagram of the structure of the second mounting module of the present utility model;

[0019] Figure 5 is a schematic diagram of the structure of the support module of the present utility model;

[0020] Figure 6 is a schematic diagram of the structure of the protection module of the present utility model.

[0021] Description of the reference numerals: 1. First installation module; 2. Connection module; 3. Second installation module; 4. Support module; 5. Protection module; 101. First mounting plate; 102. First mounting hole; 103. First clamping hole; 104. First prefabricated step; 105. First positioning hole; 106. First rectangular groove; 201. Second prefabricated step; 202. Second positioning hole; 203. First positioning post; 204. Second rectangular groove; 205. First connection groove; 301. Third prefabricated step; 302. Second clamping hole; 303. Second positioning post; 304. Second connection groove; 305. Second mounting plate; 306. Second mounting hole; 401. Rectangular clamping block; 402. Telescopic sleeve; 403. Positioning bolt; 404. Telescopic column; 405. Round hole; 501. Column; 502. Nut; 503. Protection rod. Detailed implementation manners

[0022] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Please refer to Figures 1-4, the present utility model provides an embodiment: a prefabricated staircase for an assembled building that can be quickly disassembled and assembled, including a first installation module 1, a connection module 2, a second installation module 3, a support module 4, and a protection module 5; on one side above the first installation module 1, there is a second installation module 3 for fixedly connecting to the building ground. Between the first installation module 1 and the second installation module 3, multiple groups of connection modules 2 for connecting the first installation module 1 and the second installation module 3 are stacked upward in sequence along the edge. At the lower end and one side edge of the connection module 2 and the second installation module 3, three groups of support modules 4 for supporting and stabilizing the prefabricated staircase are horizontally penetrated. At the upper end of the first installation module 1 and the second installation module 3, protection modules 5 for protecting people's safety and preventing falling are symmetrically installed. The first installation module 1 includes a first installation plate 101 and a first prefabricated step 104. On the side of the first prefabricated step 104 away from the connection module 2, a first installation plate 101 is installed. Two groups of first installation holes 102 for bolts to pass through are horizontally opened on the first installation plate 101. Three groups of first positioning holes 105 for positioning and connecting the connection module 2 are horizontally opened at the upper side edge of the first prefabricated step 104 away from the first installation plate 101. At both ends of the side of the first prefabricated step 104 away from the first positioning holes 105, first clamping holes 103 for installing the protection module 5 are opened. Three groups of first rectangular grooves 106 for positioning and connecting the support module 4 are horizontally opened on the side of the first prefabricated step 104 away from the first installation plate 101. The connection module 2 includes a second prefabricated step 201 and a first positioning post 203. Three groups of second positioning holes 202 for positioning and connecting the first positioning post 203 are horizontally opened at the upper side edge of the second prefabricated step 201 near the second installation module 3. At the lower end and one side edge of the second prefabricated step 201 near the first installation module 1, a first positioning post 203 is installed corresponding to the second positioning holes 202. At the lower side edge of the second prefabricated step 201 away from the first positioning post 203, a first connection groove 205 for positioning and connecting the support module 4 is opened corresponding to the support module 4. A second rectangular groove 204 for positioning and connecting the support module 4 is opened on the side of the second prefabricated step 201 away from the first installation module 1 corresponding to the support module 4. The second installation module 3 includes a third prefabricated step 301, a second positioning post 303, and a second installation plate 305. On the side of the third prefabricated step 301 away from the second prefabricated step 201, a second installation plate 305 is installed. Two groups of second installation holes 306 for bolts to pass through are horizontally opened on the second installation plate 305. Second clamping holes 302 for installing the protection module 5 are opened at both ends of the upper side of the third prefabricated step 301. At the lower end and one side edge of the third prefabricated step 301 away from the second installation plate 305, a second positioning post 303 is installed corresponding to the second positioning holes 202. At the lower side edge of the third prefabricated step 301 away from the second positioning post 303, a second connection groove 304 for positioning and connecting the support module 4 is opened corresponding to the support module 4.

[0024] Please refer to Figures 5-6 Figures 5-6 In this embodiment, the support module 4 includes a rectangular clamping block 401, a telescopic sleeve 402, a positioning bolt 403 and a telescopic column 404. A rectangular clamping block 401 is installed at one end of the telescopic sleeve 402. A telescopic column 404 is sleeved inside the telescopic sleeve 402. A positioning bolt 403 is provided at the connection between the telescopic sleeve 402 and the telescopic column 404. Multiple groups of circular holes 405 for the positioning bolt 403 to pass through are linearly formed on the telescopic column 404. The protection module 5 includes columns 501, nuts 502 and guardrails 503. Two groups of columns 501 are horizontally provided. Two groups of guardrails 503 are linearly installed between the two groups of columns 501. Nuts 502 are sleeved outside the lower ends of the columns 501.

[0025]

[0025] When working, the first mounting plate 101 is first fixedly connected to the building floor by bolts passing through the first mounting holes 102. Then, according to the height of the precast stairs to be installed inside the building, the first positioning column 203 drives the second precast step 201 to be positioned and connected to the first precast step 104 and the second precast step 201 through the first positioning hole 105 and the second positioning hole 202. By continuously repeating the positioning connection in this way, it is assembled into a suitable height. Then, the second positioning column 303 drives the third precast step 301 to be positioned and connected to the second precast step 201 through the second positioning hole 202. The second mounting plate 305 is fixedly connected to the building floor by bolts passing through the second mounting holes 306, thereby forming a precast staircase suitable for the height inside the building.

[0026]

[0026] After the precast staircase is assembled, the rectangular clamping block 401 first drives the telescopic sleeve 402 to be positioned and connected to the first precast step 104 and the second precast step 201 through the first rectangular groove 106 and the second rectangular groove 204. Then, according to the distance between the second precast step 201 and the third precast step 301 after the positioning connection is completed, by adjusting the positioning bolt 403, the telescopic column 404 moves along the telescopic sleeve 402 until the telescopic column 404 is positioned and connected to the second precast step 201 and the third precast step 301 through the first connection groove 205 and the second connection groove 304, and then the positioning bolt 403 passes through the circular hole 405 and is tightened and fixed. In this way, the precast staircase can be stably supported. Then, the column 501 is fixedly connected to the first precast step 104 and the third precast step 301 through the first clamping hole 103 and the second clamping hole 302, and then tightened and fixed by the nut 502. The guardrail 503 can protect people from falling and reduce the occurrence of accidents.

[0027] Through the above steps, after the precast staircase is assembled, the rectangular clamping block 401 first drives the telescopic sleeve 402 to be positioned and connected with the first precast step 104 and the second precast step 201 through the first rectangular groove 106 and the second rectangular groove 204. Then, according to the distance between the second precast step 201 and the third precast step 301 after they are positioned and connected, by adjusting the positioning bolt 403, the telescopic column 404 moves along the telescopic sleeve 402 until the telescopic column 404 is positioned and connected with the second precast step 201 and the third precast step 301 through the first connection groove 205 and the second connection groove 304, and then the positioning bolt 403 passes through the round hole 405 and is tightened and fixed. Thus, the precast staircase can be stably supported. Then, the upright column 501 is fixedly connected with the first precast step 104 and the third precast step 301 through the first clamping hole 103 and the second clamping hole 302, and then tightened and fixed by the nut 502. The protective rod 503 can protect people from falling and reduce the occurrence of accidents.

[0028] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A precast staircase for prefabricated buildings that can be quickly disassembled and assembled, including a first installation module (1); characterized in that: It also includes a connection module (2), a second installation module (3), a support module (4), and a protection module (5); on one side above the first installation module (1), there is a second installation module (3) for fixedly connecting to the building floor. Between the first installation module (1) and the second installation module (3), multiple groups of connection modules (2) for connecting the first installation module (1) and the second installation module (3) are stacked upward in sequence along the edge. At the lower end side edge of the connection module (2) and the second installation module (3), three groups of support modules (4) for supporting and stabilizing the precast staircase are horizontally penetrated. At the upper ends of the first installation module (1) and the second installation module (3), protection modules (5) for protecting people's safety from falling are symmetrically installed.

2. The precast staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 1, wherein: The first installation module (1) includes a first installation plate (101) and a first precast step (104). On the side of the first precast step (104) away from the connection module (2), there is a first installation plate (101). Two groups of first installation holes (102) for bolts to pass through are horizontally opened on the first installation plate (101). Three groups of first positioning holes (105) for positioning and connecting the connection module (2) are horizontally opened at the side edge of the first precast step (104) away from the first installation plate (101). At both ends of the side of the first precast step (104) away from the first positioning holes (105), there are first clamping holes (103) for installing the protection module (5). Three groups of first rectangular grooves (106) for positioning and connecting the support module (4) are horizontally opened on the side of the first precast step (104) away from the first installation plate (101).

3. A precast staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 1, characterized in that: The connection module (2) includes a second precast step (201) and a first positioning post (203). Three groups of second positioning holes (202) for positioning and connecting the first positioning post (203) are horizontally opened at the side edge of the second precast step (201) close to the second installation module (3) above. At the lower end side edge of the second precast step (201) close to the first installation module (1), a first positioning post (203) is installed corresponding to the second positioning hole (202). At the side edge of the lower part of the second precast step (201) away from the first positioning post (203), a first connection groove (205) for positioning and connecting the support module (4) is opened corresponding to the support module (4). A second rectangular groove (204) for positioning and connecting the support module (4) is opened on the side of the second precast step (201) away from the first installation module (1) corresponding to the support module (4).

4. The precast staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 3, characterized in that: The second installation module (3) includes a third prefabricated step (301), a second positioning post (303), and a second mounting plate (305). A second mounting plate (305) is installed on one side of the third prefabricated step (301) away from the second prefabricated step (201). Two groups of second mounting holes (306) for bolts to pass through are horizontally opened on the second mounting plate (305). Second clamping holes (302) for installing the protection module (5) are opened at both ends above the third prefabricated step (301). A second positioning post (303) is correspondingly installed at the edge of the lower end of the third prefabricated step (301) away from the second mounting plate (305) and corresponding to the second positioning hole (202). A second connection groove (304) for positioning and connecting the support module (4) is opened at the edge of the lower side of the third prefabricated step (301) away from the second positioning post (303) and corresponding to the support module (4).

5. A precast staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 1, characterized in that: The support module (4) includes a rectangular clamping block (401), a telescopic sleeve (402), a positioning bolt (403), and a telescopic column (404). A rectangular clamping block (401) is installed at one end of the telescopic sleeve (402), and a telescopic column (404) is sleeved inside the telescopic sleeve (402).

6. The prefabricated staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 5, characterized in that: A positioning bolt (403) is provided at the connection between the telescopic sleeve (402) and the telescopic column (404), and multiple groups of circular holes (405) for the positioning bolt (403) to pass through are linearly opened on the telescopic column (404).

7. A prefabricated staircase for prefabricated buildings that can be quickly disassembled and assembled according to claim 1, characterized in that: The protection module (5) includes columns (501), nuts (502), and protective rods (503). Two groups of columns (501) are horizontally provided, and two groups of protective rods (503) are linearly installed between the two groups of columns (501). Nuts (502) are sleeved outside the lower ends of the columns (501).

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