Prefabricated hollow stair facilitating hoisting and pipeline construction

Abstract

The prefabricated hollow stair facilitating hoisting and pipeline construction comprises a prefabricated scissor ladder, a first bearing platform is arranged at one end of the prefabricated scissor ladder, and a second bearing platform is arranged at the other end of the prefabricated scissor ladder; wherein a formwork is arranged in the prefabricated scissor ladder, an air bag is arranged in the formwork, the formwork is filled with the air bag, after concrete is poured into the formwork, air in the air bag is exhausted after the concrete is initially set, and the air bag is drawn out from one side of the formwork to form a cavity. The first plugging piece and the second plugging piece are adopted to plug the lower opening and the upper opening of the prefabricated scissor ladder to prevent slurry leakage, then micro-expansion concrete is poured into the cavity from one side of the upper opening of the prefabricated scissor ladder to form a complete stair prototype, meanwhile, the weight of the prefabricated scissor ladder can be greatly reduced, the weight of the prefabricated scissor ladder is light, and construction is convenient. And a more economical tower crane can be selected.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated building design and construction, in particular to a prefabricated hollow staircase which is convenient for hoisting and pipeline construction. Background Art

[0002] As a component for vertical transportation between floors in a building, it is used for transportation between floors and when there is a large height difference. Stairs can be divided into single-tread stairs, double-tread stairs and multi-tread stairs according to the stair segments. The plane shapes of the stair segments are straight, broken and curved. Scissor stairs are often designed in residential structure design. With the advancement of building industrialization, it is inevitable to design scissor stairs in prefabricated assembly. However, there are some difficulties in the construction of prefabricated scissor stairs at this stage. The main aspects are as follows:

[0003] Prefabricated scissor ladders are too heavy and require higher tower cranes at the construction site;

[0004] If the equipment requires pre-buried pipelines, the prefabricated scissors ladder cannot be accurately reserved for pre-buried pipelines, and the only option is to use the open-mounted bridge frame method. Utility Model Content

[0005] In order to overcome the existing problems, the embodiment of the present application provides a prefabricated hollow staircase which is convenient for hoisting and pipeline construction. An air bag is reserved inside the prefabricated scissors ladder. After the concrete is initially set, the air in the air bag is released and the air bag is extracted from the prefabricated scissors ladder to form a connected cavity. A pipeline rack is laid in the cavity of the prefabricated scissors ladder and connected to the pipeline on site. Thereafter, a first sealing member and a second sealing member are used to seal the lower and upper openings of the prefabricated scissors ladder to prevent leakage. Then, micro-expansive concrete is poured into the cavity from the upper side of the prefabricated scissors ladder to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder can be greatly reduced. The prefabricated scissors ladder is lighter in weight, and a more economical tower crane can be selected.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A prefabricated hollow staircase convenient for hoisting and pipeline construction, comprising a prefabricated scissor ladder, wherein one end of the prefabricated scissor ladder is provided with a first support platform, and the other end of the prefabricated scissor ladder is provided with a second support platform;

[0008] Among them, a template is provided inside the prefabricated scissors ladder, and an air bag is provided inside the template. The air bag is filled into the template, and after concrete is poured into the template, the concrete is initially solidified, the air in the air bag is discharged, and the air bag is pulled out from one side of the template to form a cavity. A pipeline rack runs through the cavity to limit the internal pipeline protection. An air bag is reserved inside the prefabricated scissors ladder. After the concrete is initially solidified, the air in the air bag is released, and the air bag is pulled out from the prefabricated scissors ladder to form a connected cavity, and a pipeline rack is laid in the cavity of the prefabricated scissors ladder and connected to the pipeline on site. After that, the first sealing member and the second sealing member are used to seal the lower and upper openings of the prefabricated scissors ladder to prevent leakage, and then micro-expansive concrete is poured into the cavity from the upper side of the prefabricated scissors ladder to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder can be greatly reduced. The prefabricated scissors ladder is lighter in weight, and a more economical tower crane can be selected.

[0009] Preferably, a first blocking piece is provided at the intersection of the first support platform and the prefabricated scissors ladder, and the first blocking piece is made of XPS material to achieve a sealing effect. A second blocking piece is provided at the intersection of the second support platform and the prefabricated scissors ladder, and the second blocking piece is made of XPS material to achieve a sealing effect. Circular holes are provided at the intersections of the first blocking piece and the second blocking piece with the pipeline rack, and during the arrangement of the pipeline rack, the pipeline rack can pass through the first blocking piece and the second blocking piece.

[0010] Preferably, the prefabricated scissors ladder has the same size as the first support platform and the second support platform at the intersection, and a leveling layer is provided at the intersection of the prefabricated scissors ladder, the first support platform and the second support platform. Through the setting of the leveling layer, the prefabricated scissors ladder will not tilt at the intersection position when connected with the first support platform and the second support platform.

[0011] Preferably, the width of the cavity is smaller than the width of the prefabricated scissors ladder, and the cavity is recessed inside the prefabricated scissors ladder. The weight of the prefabricated scissors ladder can be greatly reduced. The prefabricated scissors ladder is lighter, and a more economical tower crane can be selected.

[0012] The advantages of the embodiments of the present application are:

[0013] An air bag is reserved inside the prefabricated scissors ladder. After the concrete is initially set, the air in the air bag is released and the air bag is extracted from the prefabricated scissors ladder to form a connected cavity. A pipeline rack is laid in the cavity of the prefabricated scissors ladder and connected to the pipeline on site. After that, the first sealing member and the second sealing member are used to seal the lower opening and the upper opening of the prefabricated scissors ladder to prevent leakage. Then, micro-expansive concrete is poured into the cavity from the upper opening side of the prefabricated scissors ladder to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder can be greatly reduced. The prefabricated scissors ladder is lighter in weight, so a more economical tower crane can be selected. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the side cross-sectional structure of the prefabricated hollow staircase construction that is convenient for hoisting and pipeline construction;

[0016] Figure 2 This is a schematic diagram of the side sectional structure of the prefabricated hollow staircase of the utility model which is convenient for hoisting and pipeline construction;

[0017] Figure 3 This is a schematic diagram of the cross-sectional structure of a prefabricated hollow staircase that is convenient for hoisting and pipeline construction according to the utility model;

[0018] Figure 4 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0019] Figure 5 For this utility model Figure 2 Schematic diagram of the local enlarged structure at point B in the middle.

[0020] Description of main reference numerals:

[0021] 1. Prefabricated scissors ladder; 2. Cavity; 3. Pipe rack; 4. First pedestal; 5. First plugging piece; 6. Second pedestal; 7. Second plugging piece; 8. Air bag; 9. Template. DETAILED DESCRIPTION

[0022] The embodiment of the present application solves the problems in the prior art by providing a prefabricated hollow staircase that is convenient for hoisting and pipeline construction. An air bag is reserved inside the prefabricated scissors ladder. After the concrete is initially set, the air in the air bag is released and the air bag is extracted from the prefabricated scissors ladder to form a connected cavity. A pipeline rack is laid in the cavity of the prefabricated scissors ladder and connected to the pipeline on site. Thereafter, a first sealing member and a second sealing member are used to seal the lower and upper openings of the prefabricated scissors ladder to prevent leakage. Then, micro-expansive concrete is poured into the cavity from the upper side of the prefabricated scissors ladder to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder can be greatly reduced. The prefabricated scissors ladder is lighter in weight, so a more economical tower crane can be selected.

[0023] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows: Example

[0024] This embodiment provides a specific structure of a prefabricated hollow staircase that is convenient for hoisting and pipeline construction. Figure 1-5 As shown, it comprises a prefabricated scissors ladder 1, one end of the prefabricated scissors ladder 1 is provided with a first support platform 4, and the other end of the prefabricated scissors ladder 1 is provided with a second support platform 6;

[0025] Among them, the prefabricated scissors ladder 1 is provided with a template 9 inside, and an air bag 8 is provided inside the template 9. The air bag 8 is filled into the template 9, and after concrete is poured into the template 9 and the concrete is initially solidified, the air in the air bag 8 is discharged, and the air bag 8 is pulled out from one side of the template 9 to form a cavity 2. A pipeline rack 3 runs through the cavity 2 to limit the position of the internal pipeline. The air bag 8 is reserved inside the prefabricated scissors ladder 1. After the concrete is initially solidified, the air in the air bag 8 is released, and the air bag is pulled out from the prefabricated scissors ladder 1. 8, a connected cavity 2 is formed, and a pipeline rack 3 is laid in the cavity 2 of the prefabricated scissors ladder 1 and connected to the pipeline on site, and then the first plugging piece 5 and the second plugging piece 6 are used to block the lower opening and the upper opening of the prefabricated scissors ladder 1 to prevent leakage, and then micro-expansive concrete is poured into the cavity 2 from the upper opening side of the prefabricated scissors ladder 1 to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder 1 can be greatly reduced. The prefabricated scissors ladder 1 is lighter in weight, and a more economical tower crane can be selected.

[0026] A first blocking piece 5 is provided at the intersection of the first support platform 4 and the prefabricated scissors ladder 1. The first blocking piece 5 is made of XPS material to achieve a sealing effect. A second blocking piece 7 is provided at the intersection of the second support platform 6 and the prefabricated scissors ladder 1. The second blocking piece 7 is made of XPS material to achieve a sealing effect. Circular holes are provided at the intersections of the first blocking piece 5 and the second blocking piece 7 with the pipeline rack 3. During the arrangement of the pipeline rack 3, the pipeline rack 3 can pass through the first blocking piece 5 and the second blocking piece 7.

[0027] The dimensions of the intersections of the prefabricated scissors ladder 1, the first support platform 4 and the second support platform 6 are the same, and a leveling layer is provided at the intersections of the prefabricated scissors ladder 1, the first support platform 4 and the second support platform 6. By setting the leveling layer, the prefabricated scissors ladder 1, the first support platform 4 and the second support platform 6 will not be tilted at the intersection when connected.

[0028] The width of the cavity 2 is smaller than the width of the prefabricated scissors ladder 1 , and the cavity 2 is recessed inside the prefabricated scissors ladder 1 . The weight of the prefabricated scissors ladder 1 can be greatly reduced. The prefabricated scissors ladder 1 is lighter, and a more economical tower crane can be selected.

[0029] By adopting the above technical solution:

[0030] The prefabricated scissors ladder 1 is hoisted into place according to the normal special plan for hoisting construction of the prefabricated scissors ladder 1, and attention should be paid to the protection of the finished prefabricated components during the hoisting process. Afterwards, the equipment pipelines are constructed in the cavity 2 of the prefabricated scissors ladder 1, and the lower mouth of the prefabricated scissors ladder 1 is blocked with the first blocking piece 5 and the second blocking piece 7 of the XPS material to prevent leakage, and then concrete is poured from the upper mouth of the prefabricated scissors ladder 1.

[0031] Working Principle: Production Phase:

[0032] The factory ties the prefabricated staircase reinforcement and fixes the formwork 9 and the airbag 8;

[0033] Pour concrete, and after the concrete is initially set, exhaust the air in the air bag 8 and extract the air bag 8 from one side of the template 9.

[0034] On-site assembly construction phase:

[0035] The prefabricated scissor ladder 1 shall be hoisted into place according to the normal special hoisting construction plan for the prefabricated scissor ladder 1, and special attention shall be paid to the protection of the finished prefabricated components during the hoisting process;

[0036] Afterwards, equipment pipelines are constructed in the cavity 2 of the prefabricated scissor ladder 1;

[0037] Use the first plugging piece 5 and the second plugging piece 7 made of XPS material to plug the lower opening of the prefabricated scissor ladder 1 to prevent leakage of slurry;

[0038] Then pour concrete from the upper opening of the prefabricated scissors ladder 1.

[0039] An air bag 8 is reserved inside the prefabricated scissors ladder 1. After the concrete is initially set, the air in the air bag 8 is released, and the air bag 8 is extracted from the prefabricated scissors ladder 1 to form a connected cavity 2. A pipeline rack 3 is laid in the cavity 2 of the prefabricated scissors ladder 1 and connected to the pipeline on site. Then, a first blocking member 5 and a second blocking member 6 are used to block the lower opening and the upper opening of the prefabricated scissors ladder 1 to prevent leakage. Then, micro-expansive concrete is poured into the cavity 2 from the upper opening side of the prefabricated scissors ladder 1 to form a complete staircase prototype. At the same time, the weight of the prefabricated scissors ladder 1 can be greatly reduced. The prefabricated scissors ladder 1 is lighter in weight, and a more economical tower crane can be selected.

[0040] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A prefabricated hollow staircase that is convenient for hoisting and pipeline construction, characterized in that: It comprises a prefabricated scissors ladder (1), wherein one end of the prefabricated scissors ladder (1) is provided with a first support platform (4), and the other end of the prefabricated scissors ladder (1) is provided with a second support platform (6); The prefabricated scissor ladder (1) is provided with a template (9) inside, and an air bag (8) is provided inside the template (9). The air bag (8) is filled into the template (9), and after concrete is poured into the template (9) and the concrete is initially set, the air in the air bag (8) is discharged, and the air bag (8) is extracted from one side of the template (9) to form a cavity (2).

2. A prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 1, characterized in that: A first blocking member (5) is provided at the intersection of the first support platform (4) and the prefabricated scissors ladder (1).

3. A prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 2, characterized in that: A second blocking member (7) is provided at the intersection of the second support platform (6) and the prefabricated scissors ladder (1).

4. A prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 3, characterized in that: A pipeline rack (3) passes through the cavity (2) and is used to limit and protect the pipelines inside.

5. The prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 1 is characterized in that: A leveling layer is provided at the intersections of the prefabricated scissors ladder (1) and the first supporting platform (4) and the second supporting platform (6).

6. A prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 4, characterized in that: The prefabricated scissors ladder (1) has the same size as the first support platform (4) and the second support platform (6).

7. The prefabricated hollow staircase that is convenient for hoisting and pipeline construction as claimed in claim 1 is characterized in that: The width of the cavity (2) is smaller than the width of the prefabricated scissors ladder (1).

8. The prefabricated hollow staircase for facilitating hoisting and pipeline construction as claimed in claim 4, characterized in that: Circular holes are provided at the intersections of the first blocking member (5) and the second blocking member (7) with the pipeline rack (3).

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