A positioning auxiliary device and method for controlling the installation of prefabricated stairs

Abstract

The present invention provides a positioning auxiliary device and method for controlling the installation of prefabricated stairs, comprising: a template, a positioning fastener, a top support and a cast-in-place concrete base, wherein a prefabricated staircase is connected to one side of the cast-in-place concrete base for supporting and installing the prefabricated staircase; the positioning fastener is connected through the cast-in-place concrete base; the template is connected to the top of the cast-in-place concrete base via the positioning fastener; the top support is provided between the template and the top of the cast-in-place concrete base, and the top support is provided on the side of the cast-in-place concrete base close to the prefabricated staircase for locating the installation position of the prefabricated floor slab. The beneficial effects of the present invention are that the prefabricated stairs are assisted in positioning, have a simple structure, are easy to install, have a wide range of adaptability, are stable and reliable, and can effectively avoid problems such as prefabricated staircase deviation, stair platform elevation deviation, and accumulation of debris in the construction joint between the stair platform and the prefabricated staircase.

Description

Technical Field

[0001] The present invention belongs to the field of construction engineering, and in particular relates to a positioning auxiliary device and method for controlling the installation of prefabricated stairs. Background Art

[0002] In existing civil construction, especially high-rise buildings, prefabricated structures are predominantly used, and prefabricated staircases are an essential component. Prefabricated staircases are heavy, and hoisting can easily damage pre-placed polystyrene panels, causing misalignment and making adjustments difficult. Furthermore, the area where PE rods and weather-resistant adhesive are placed on the polystyrene panels easily accumulates and is difficult to clean, significantly impacting both construction and the safety of the staircase structure. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a positioning auxiliary device and method for controlling the installation of prefabricated stairs, which is particularly suitable for accurately positioning prefabricated stairs, preventing debris from falling in, and operating environments where construction joints are difficult to clean.

[0004] To solve the above technical problems, the present invention adopts a technical solution: a positioning auxiliary device for controlling the installation of prefabricated stairs, comprising: a template, positioning fasteners, a top support member and a cast-in-place concrete base, one side of the cast-in-place concrete base is connected to the prefabricated stairs for supporting and installing the prefabricated stairs;

[0005] The positioning fastener is connected through the cast-in-place concrete base;

[0006] The template is connected to the top of the cast-in-place concrete base through the positioning fasteners;

[0007] The top support is provided between the formwork and the top end of the cast-in-place concrete base. The top support is provided on a side of the cast-in-place concrete base close to the prefabricated staircase and is used to locate the installation position of the prefabricated floor slab.

[0008] Furthermore, the cast-in-place concrete base is stepped, comprising a first step and a second step, the bottom of the prefabricated staircase is arranged on the upper end surface of the first step; and the template is connected to the upper end surface of the second step.

[0009] Furthermore, the positioning fastener is a tension bolt, which is sleeved in a bolt sleeve and penetrates and connects to the cast-in-place concrete base. Both ends of the tension bolt extending out of the cast-in-place concrete base are connected with nuts.

[0010] Furthermore, the tension bolts are marked with the pouring height of the cast-in-place concrete base.

[0011] Furthermore, at least one pair of tension bolts is provided.

[0012] Furthermore, the template is a wooden template, and the wooden template is provided with holes connected to the tension bolts.

[0013] Furthermore, the tension bolts penetrate and connect the wooden formwork to the upper end surface of the second step, and the nuts are fastened to the outer side of the wooden formwork away from the cast-in-place concrete base.

[0014] Furthermore, one side of the wooden formwork extends out of the second step to determine the installation position of the prefabricated staircase.

[0015] Furthermore, the top support member is an angle iron, which is arranged between the wooden formwork and the upper end surface of the second step. The inner side of the angle iron is arranged close to the protruding side of the wooden formwork, and the side of the prefabricated staircase is tightly connected to the outer side of the angle iron. The angle iron is used to locate the installation position of the prefabricated staircase.

[0016] To achieve the above object, the present invention further provides a method for using a positioning auxiliary device for controlling the installation of prefabricated stairs, comprising the following steps:

[0017] S1: Install the stair platform bottom formwork and single-side side formwork;

[0018] S2: Tie the steel bars of the cast-in-place concrete base;

[0019] S3: Positioning the positioning fasteners, and tying the positioning fasteners to the steel bars of the cast-in-place concrete base;

[0020] S4: Marking the pouring height of the cast-in-place concrete base on the positioning fastener, and casting the cast-in-place concrete base according to the pouring height;

[0021] S5: After pouring is completed, the template is placed on the upper part of the cast-in-place concrete base, with one side of the template extending out of the upper part of the cast-in-place concrete base, and the top support is arranged between the template and the upper part of the cast-in-place concrete base, with the inner side of the top support being arranged close to the protruding side of the template;

[0022] S6: fastening the template and the top support member by the positioning fastener;

[0023] S7: The bottom of the prefabricated staircase is arranged on one side of the cast-in-place concrete base, and the side surface of the prefabricated staircase is arranged on the outside of the top support member, and the positioning of the prefabricated staircase is completed.

[0024] The above technical solution has the following advantages:

[0025] The prefabricated stairs are assisted in positioning by relying on a combination of embedded bolts, templates and angle irons. It has a simple structure, is easy to install, has a wide range of adaptability, is stable and reliable, and can effectively avoid problems such as prefabricated staircase deviation, stair platform elevation deviation, and accumulation of debris in the construction joint between the stair platform and the prefabricated staircase. It also has the characteristics of turnover and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0027] In the picture:

[0028] 1. Tension bolts 2. Wooden formwork 3. Angle iron

[0029] 4. Cast-in-place concrete base 5. Prefabricated stairs DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the embodiments and drawings:

[0031] In one embodiment of the present invention, Figure 1 As shown, a positioning auxiliary device for controlling the installation of prefabricated stairs includes: a template, positioning fasteners, a top support and a cast-in-place concrete base 4, one side of the cast-in-place concrete base 4 is connected to a prefabricated stair 5 for supporting and installing the prefabricated stair 5; a positioning fastener is connected through the cast-in-place concrete base 4; the template is connected to the top of the cast-in-place concrete base 4 through the positioning fastener; a top support is provided between the template and the top of the cast-in-place concrete base 4, the top support is provided on the side of the cast-in-place concrete base 4 close to the prefabricated stair 5, for locating the installation position of the prefabricated floor slab 5; wherein the stair platform 5 is a general engineering reinforced concrete structure.

[0032] like Figure 1 As shown, the cast-in-place concrete base 4 is stepped. The cast-in-place concrete base 4 is cast and formed during the construction process. The cast-in-place concrete base 4 includes a first step and a second step, wherein the first step is located at the bottom of the second step, and the height of the second step is higher than the height of the first step. The bottom of the prefabricated staircase 5 is placed on the upper end surface of the first step. During the construction process, the first step mainly plays a positioning role.

[0033] like Figure 1 In the embodiment shown, the positioning fastener is a tension bolt 1, which is a tension bolt used to reinforce formwork in general engineering. It is made of steel and has a stable structure. In this embodiment, a pair of tension bolts 1 are arranged through the cast-in-place concrete base 4 to ensure uniform force during the tightening process. The present invention is mainly used for positioning during the installation of prefabricated stairs 5. Therefore, a pair of tension bolts 1 is sufficient to meet construction needs, and the number of tension bolts 1 can also be increased in pairs according to actual needs.

[0034] During construction, the tension bolt 1 is embedded in the cast-in-place concrete base 4. The bolt sleeve of the tension bolt 1 is tied to the steel bars of the cast-in-place concrete base 1. The tension bolt is inserted into the bolt sleeve to position the tension bolt 1 and ensure its horizontality and verticality. The casting height of the cast-in-place concrete base 4 is marked on the tension bolt 1. During the casting of the cast-in-place concrete base, a line can be drawn to ensure the platform elevation and flatness, ensuring that the height of the cast-in-place concrete base 4 is lower than the floor of the precast floor slab 5, making subsequent construction more convenient. Nuts are connected to each end of the tension bolt 1 extending from the cast-in-place concrete base 4.

[0035] like Figure 1 The formwork shown is a wooden formwork 2. In this embodiment, it is provided with two holes for connecting with tension bolts 1. The wooden formwork 2 is connected to the upper end surface of the second step of the cast-in-place concrete base 4 via tension bolts 1. Nuts are tightened on the outer side of the wooden formwork 2, away from the cast-in-place concrete base 4. After the cast-in-place concrete base 4 is poured and reaches a certain strength, the wooden formwork 2 is placed on its upper end. The wooden formwork 2 extends 20 mm beyond the side of the cast-in-place concrete base 4 where it will connect to the precast staircase 5, primarily to determine the installation position of the precast staircase 5.

[0036] like Figure 1 The top support member shown is an angle iron 3, which is a general engineering angle iron with a wide range of applications. In this embodiment, an angle iron with a side length of 50 mm and a thickness of 5 mm is selected; one side of the angle iron 3 is set between the wooden formwork 2 and the top of the cast-in-place concrete base 4, and the other side of the angle iron 3 is set on the outside of the protruding side of the wooden formwork 2. Before the installation of the prefabricated staircase 5, the side of the prefabricated staircase 5 is placed on the outside of the angle iron 3, and the bottom of the prefabricated staircase 5 is connected to the upper end face of the first step of the cast-in-place concrete base 4. The angle iron 3 is used to locate the installation position of the prefabricated staircase 5. Under the action of the wooden formwork 2 and the angle iron 3, a gap of 20-30 mm is formed between the side of the second step of the cast-in-place concrete base 4 and the side of the prefabricated staircase 5. The gap is filled with polystyrene board, PE board and weather-resistant glue. The upper end of the gap is sealed by the angle iron 3 and the wooden formwork 2 to prevent the accumulation of debris and to prevent the prefabricated staircase 5 from damaging the polystyrene board, PE board and weather-resistant glue during placement. The construction method of controlling position deviation through the combination of templates and angle irons not only ensures the accuracy of the positioning of the prefabricated staircase hoisting installation, but also prevents debris from falling into the construction joints and becoming difficult to clean. It is also simple to operate, bringing convenience to subsequent construction.

[0037] This patent is an auxiliary method for controlling the positioning of prefabricated stairs based on a combination of tension bolts and formwork. It has a simple structure, is easy to install, has a wide range of adaptability, is stable and reliable, and can effectively avoid problems such as prefabricated staircase deviation, stair platform elevation deviation, and accumulation of debris in the construction joint between the stair platform and the prefabricated staircase. It also has the characteristics of turnover and low cost.

[0038] The working process of an embodiment of the present invention:

[0039] 1. The stair platform bottom formwork and single-side side formwork are installed;

[0040] 2. Complete the tying of the 4 steel bars of the cast-in-place concrete base;

[0041] 3. Position the tension bolt 1, place the bolt sleeve, insert the tension bolt 1 into the bolt sleeve, and tie the bolt sleeve to the platform steel bar to ensure the horizontality and verticality of the tension bolt 1;

[0042] 4. Mark the platform elevation on the bolt sleeve. When pouring the cast-in-place concrete base 4, you can use a line to ensure the platform elevation and flatness;

[0043] 5. After pouring is completed, when the cast-in-place concrete base 4 reaches a certain strength, place a wooden formwork 2 on the upper part of the platform, extending the cast-in-place concrete base 4 near the prefabricated staircase 5 by 20 mm, and press an angle iron 3 with a side length of 50 mm and a thickness of 5 mm into the lower part of the overhanging end and the cast-in-place concrete base 4;

[0044] 6. Fasten the wooden formwork 2 and the angle iron 3 with tension bolts 1;

[0045] 7. Place the side of the prefabricated staircase 5 close to the outer side of the angle iron 3, and place the bottom of the prefabricated staircase 5 on the upper end surface of the first step of the cast-in-place concrete base 4. The positioning of the prefabricated staircase 5 is completed.

[0046] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs, characterized in that The positioning auxiliary device for controlling the installation of prefabricated stairs includes: a template, positioning fasteners, a top support and a cast-in-place concrete base, one side of the cast-in-place concrete base is connected to the prefabricated stairs for supporting and installing the prefabricated stairs; The positioning fastener is connected through the cast-in-place concrete base; The template is connected to the top of the cast-in-place concrete base through the positioning fasteners; The top support is provided between the template and the top of the cast-in-place concrete base. The top support is provided on a side of the cast-in-place concrete base close to the precast staircase and is used to locate the installation position of the precast staircase. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs comprises the following steps: S1: Install the stair platform bottom formwork and single-side side formwork; S2: Tie the steel bars of the cast-in-place concrete base; S3: Positioning the positioning fasteners, and tying the positioning fasteners to the steel bars of the cast-in-place concrete base; S4: Marking the pouring height of the cast-in-place concrete base on the positioning fastener, and casting the cast-in-place concrete base according to the pouring height; S5: After pouring is completed, the template is placed on the upper part of the cast-in-place concrete base, with one side of the template extending out of the upper part of the cast-in-place concrete base, and the top support is arranged between the template and the upper part of the cast-in-place concrete base, with the inner side of the top support being arranged close to the protruding side of the template; S6: fastening the template and the top support member by the positioning fastener; S7: The bottom of the prefabricated staircase is arranged on one side of the cast-in-place concrete base, and the side surface of the prefabricated staircase is arranged on the outside of the top support member, and the positioning of the prefabricated staircase is completed.

2. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 1, characterized in that: The cast-in-place concrete base is stepped and includes a first step and a second step. The bottom of the prefabricated staircase is arranged on the upper end surface of the first step; the template is connected to the upper end surface of the second step.

3. The method for using the positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 2, characterized in that: The positioning fastener is a tension bolt, which is sleeved in a bolt sleeve and penetrates and connects to the cast-in-place concrete base. Both ends of the tension bolt extending out of the cast-in-place concrete base are connected with nuts.

4. The method for using the positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 3, characterized in that: The tension bolts are marked with the pouring height of the cast-in-place concrete base.

5. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 3 or 4, characterized in that: At least one pair of tension bolts is provided.

6. The method for using the positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 3, characterized in that: The template is a wooden template, and is provided with holes connected to the tension bolts.

7. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 6, characterized in that: The tension bolts penetrate and connect the wooden formwork to the upper end surface of the second step, and the nuts are fastened to the outer side of the wooden formwork away from the cast-in-place concrete base.

8. A method for using a positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 6 or 7, characterized in that: One side of the wooden template extends out of the second step to determine the installation position of the prefabricated staircase.

9. The method for using the positioning auxiliary device for controlling the installation of prefabricated stairs according to claim 6, characterized in that: The top support member is an angle iron, which is arranged between the wooden formwork and the upper end surface of the second step. The inner side of the angle iron is arranged close to the protruding side of the wooden formwork, and the side of the prefabricated staircase is tightly connected to the outer side of the angle iron. The angle iron is used to locate the installation position of the prefabricated staircase.

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