Pre-embedded bolt positioning device for prefabricated staircase

Abstract

A pre-embedded bolt positioning device for a prefabricated stair comprises an aluminum alloy formwork, the aluminum alloy formwork is connected with angle steel through a connecting structure, and the angle steel and the aluminum alloy formwork are jointly connected with and fix a pre-embedded bolt to form an integral device. The lower ends of the embedded bolts are located between the middle plane formwork and the bottom plane formwork, concrete is cast in place between the middle plane formwork and the bottom plane formwork, and the lower ends of the embedded bolts are located in the cast-in-place concrete. After the concrete is poured and reaches the standard, the aluminum alloy formwork and the angle steel are dismantled (pulled out through the through holes in movable fit), and the embedded bolts are fixed in the solidified concrete. The positioning device for the pre-embedded bolt of the prefabricated stair is simple and reasonable in structure, and disturbance of concrete vibration and pouring impact load on positioning of the pre-embedded bolt does not exist; the embedded bolt is accurate in positioning and firm in fixation, the problem that the installation quality of the prefabricated staircase is affected by re-drilling due to inaccurate positioning is solved, the construction efficiency is improved by using the positioning device for the embedded bolt of the prefabricated staircase, the positioning device can be recycled, and the labor and time cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of house construction, in particular to a prefabricated staircase embedded bolt positioning device. Background Art

[0002] In house construction, prefabricated stairs and cast-in-place staircase platforms need to be connected and fixed with embedded bolts embedded in the stair beams. The installation of prefabricated stairs requires extremely high accuracy in the positioning of embedded bolts. Traditional prefabricated staircase embedded bolt positioning uses a triangular bracket welded with steel bars as a fixing measure. When pouring concrete after the embedded bolts are positioned using a tripod bracket, the triangular bracket is prone to displacement under the impact of the cast-in-place concrete pouring and vibration load impact, resulting in the embedded bolts deviating from the original design position of the prefabricated stairs after pouring, causing the prefabricated stairs to be unable to be installed or installed inaccurately, thereby affecting the installation quality and efficiency of the prefabricated stairs. Utility Model Content

[0003] The purpose of the utility model is to provide a prefabricated staircase embedded bolt positioning device which has a simple structure, is easy to operate, can be reused, saves construction costs, accurately positions the bolts, and prevents the embedded bolts from moving under the impact of concrete pouring load, thereby improving the installation quality and efficiency of the prefabricated stairs.

[0004] The purpose of the utility model can be achieved. The utility model prefabricated staircase embedded bolt positioning device comprises a cast-in-place concrete aluminum alloy formwork with a top plane formwork, a middle plane formwork and a bottom plane formwork. The utility model prefabricated staircase embedded bolt positioning device is characterized in that: the top plane formwork of the aluminum alloy formwork is provided with two pin holes, each pin hole is provided with a connecting pin, each connecting pin is connected to an L-shaped adapter plate, the upper part of the connecting pin is provided with a plug hole, the plug hole is provided with a plug pin, the plane long plate of the L-shaped adapter plate is fixed to the top plane formwork by the connecting pin and the plug pin, the vertical short plates of the two L-shaped adapter plates are respectively connected to a vertical upper wing plate of an angle steel by connecting bolts and a first nut, and the horizontal lower wing plate of the angle steel is provided in the device Two through holes are opened at the embedded bolt installation positions specified in the design, and a plug hole is opened in the middle plane template of the aluminum alloy template at the vertical projection center of the two through holes of the angle steel respectively. The through holes of the horizontal lower wing plate of the angle steel and the vertically corresponding plug holes of the middle plane template constitute a group of embedded bolt positioning holes, and an embedded bolt is installed in the group of embedded bolt positioning holes. The upper end of the embedded bolt is fixed to the horizontal lower wing plate of the angle steel through a second nut, and the lower end of the embedded bolt passes through the plug hole of the middle plane template and is located between the middle plane template and the bottom plane template. Cast-in-place concrete is placed between the middle plane template and the bottom plane template, and the aluminum alloy template, L-shaped adapter plate, angle steel and embedded bolts are connected through a structure to form an integral device.

[0005] The utility model discloses a prefabricated staircase embedded bolt positioning device, wherein the embedded bolts, the through holes of the horizontal lower wing plate of the angle steel and the insertion holes of the middle plane template form a dynamic matching structure pair.

[0006] The utility model discloses a prefabricated staircase embedded bolt positioning device, wherein the length of the angle steel is greater than or equal to the length of the top plane template, and both ends of the length are 10 cm away from the edges of adjacent through holes.

[0007] The utility model discloses a prefabricated staircase embedded bolt positioning device, wherein the adapter plate and the angle steel are both made of stainless steel material.

[0008] The difference between the embedded bolt positioning device of the prefabricated staircase of the utility model and the prior art is that the embedded bolt positioning device of the prefabricated staircase of the utility model comprises an aluminum alloy template, the aluminum alloy template is connected to the angle steel through a connecting structure, and the angle steel and the aluminum alloy template jointly fix the embedded bolt to form an integral device. The lower end of the embedded bolt is between the middle plane template and the bottom plane template, and the middle plane template and the bottom plane template are cast in place concrete, and the lower end of the embedded bolt is in the cast-in-place concrete. After the concrete is poured and meets the standard, the aluminum alloy template (pulled out through the through hole of the dynamic fit) and the angle steel are removed, and the embedded bolt is fixed in the solidified concrete. The embedded bolt positioning device of the prefabricated staircase of the utility model has a simple and reasonable structure, and there is no disturbance of the embedded bolt positioning by concrete vibration and pouring impact load; the embedded bolt is accurately positioned and firmly fixed, which eliminates the problem of re-drilling due to inaccurate positioning, which affects the installation quality of the prefabricated staircase. The use of the embedded bolt positioning device of the prefabricated staircase of the utility model improves the construction efficiency, can be used in a turnover manner, and saves labor and time costs.

[0009] The following is a further description of the prefabricated staircase embedded bolt positioning device of the present invention in conjunction with the accompanying drawings. The accompanying drawings only illustrate the basic structure of the present invention in a schematic manner, and therefore only show structures related to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the embedded bolt positioning device for prefabricated stairs of the utility model.

[0011] Figure 2 It is a schematic top view of the structure of the embedded bolt positioning device for prefabricated stairs of the utility model.

[0012] Figure 3 It is a schematic diagram of the left side structure of the embedded bolt positioning device for prefabricated stairs of the utility model.

[0013] Figure 4 It is a schematic diagram of the application state of the embedded bolt positioning device for prefabricated stairs of the utility model.

[0014] Figure 5 for Figure 4Detailed drawing of Ⅰ. DETAILED DESCRIPTION

[0015] like Figure 1-Figure 5 As shown, the embedded bolt positioning device for prefabricated stairs of the utility model comprises a cast-in-place concrete aluminum alloy template 1 with a top plane template 11, a middle plane template 12 and a bottom plane template 13. Two pin holes a are provided on the top plane template 11 of the aluminum alloy template 1, each pin hole a is provided with a connecting pin 2, and each connecting pin 2 is connected to an L-shaped adapter plate 3. A plug hole is provided on the upper part of the connecting pin 2, and a plug pin 4 is provided in the plug hole. The plane long plate of the L-shaped adapter plate 3 is fixed to the top plane template 11 through the connecting pin 2 and the plug pin 4. The vertical short plates of the two L-shaped adapter plates 3 are respectively connected to the vertical upper wing plate of an angle steel 6 through connecting bolts and a first nut 5. The horizontal lower wing plate of the angle steel 6 is provided with two through holes at the embedded bolt installation position specified in the design. The middle plane template 12 of the aluminum alloy template 1 is provided with a plug hole b at the vertical projection center of the two through holes of the angle steel 6. The horizontal lower wing plate through hole of the angle steel 6 and the vertical corresponding plug hole b of the middle plane template 12 constitute a group of embedded bolt positioning holes. An embedded bolt 7 is installed in a set of embedded bolt positioning holes. The upper end of the embedded bolt 7 is fixed to the horizontal lower wing plate of the angle steel 6 through the second nut 8, and the lower end of the embedded bolt 7 passes through the insertion hole b of the middle plane template 12 and is located between the middle plane template 12 and the bottom plane template 13. Cast-in-place concrete 9 is placed between the middle plane template 12 and the bottom plane template 13. The aluminum alloy template 1, the L-shaped adapter plate 3, the angle steel 6 and the embedded bolt 7 are connected by structure to form an integral device.

[0016] In the embedded bolt positioning device for prefabricated stairs of the utility model, the embedded bolt 7, the through hole of the horizontal lower wing plate of the angle steel 6, and the socket b of the middle plane template 12 form a dynamic matching structure pair. The embedded bolt 7 can be plugged and unplugged in the through hole of the angle steel 6 and the socket b of the middle plane template 12. After the concrete pouring is completed and meets the standards, the angle steel and the aluminum alloy template 1 are pulled out from the embedded bolt 7, and the embedded bolt 7 is retained and fixed in the concrete, completing the positioning and embedding operation of the embedded bolt 7.

[0017] In the embedded bolt positioning device for prefabricated stairs of the present invention, the length of the angle steel 6 is greater than or equal to the length of the top plane template 11 and both ends of the length are 10 cm away from the edge of the adjacent through hole.

[0018] In the embedded bolt positioning device for prefabricated stairs of the utility model, the adapter plate 3 and the angle steel 6 are both made of stainless steel material.

[0019] The embodiments described above are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should all fall within the scope of protection determined by the claims of the present invention.

Claims

1. A prefabricated staircase embedded bolt positioning device, comprising a cast-in-place concrete aluminum alloy formwork (1) with a top plane formwork (11), a middle plane formwork (12) and a bottom plane formwork (13), characterized in that: The top plane template (11) of the aluminum alloy template (1) is provided with two pin holes (a), each pin hole (a) is provided with a connecting pin (2), each connecting pin (2) is connected to an L-shaped adapter plate (3), the upper part of the connecting pin (2) is provided with a plug hole, the plug hole is provided with a plug pin (4), the plane long plate of the L-shaped adapter plate (3) is fixed to the top plane template (11) through the connecting pin (2) and the plug pin (4), the vertical short plates of the two L-shaped adapter plates (3) are respectively connected to the vertical upper wing plate of an angle steel (6) through connecting bolts and first nuts (5), the horizontal lower wing plate of the angle steel (6) is provided with two through holes at the pre-embedded bolt installation position specified in the design, and the middle plane template (12) of the aluminum alloy template (1) is provided with two through holes in the angle steel (6). A plug hole (b) is provided at each vertical projection center. The horizontal lower wing plate through hole of the angle steel (6) and the vertically corresponding plug hole (b) of the middle plane template (12) form a group of embedded bolt positioning holes. An embedded bolt (7) is installed in the group of embedded bolt positioning holes. The upper end of the embedded bolt (7) is fixed to the horizontal lower wing plate of the angle steel (6) through a second nut (8). The lower end of the embedded bolt (7) passes through the plug hole (b) of the middle plane template (12) and is located between the middle plane template (12) and the bottom plane template (13). Cast-in-place concrete (9) is placed between the middle plane template (12) and the bottom plane template (13). The aluminum alloy template (1), the L-shaped adapter plate (3), the angle steel (6) and the embedded bolt (7) are connected through a structure to form an integral device.

2. The embedded bolt positioning device for prefabricated stairs according to claim 1 is characterized in that: The embedded bolts (7) and the through holes of the horizontal lower wing plate of the angle steel (6) and the insertion holes (b) of the middle plane template (12) form a dynamic fit structural pair.

3. The embedded bolt positioning device for prefabricated stairs according to claim 1 or 2, characterized in that: The length of the angle steel (6) is greater than or equal to the length of the top plane template (11), and both ends of the length are 10 cm away from the edge of the adjacent through hole.

4. The embedded bolt positioning device for prefabricated stairs according to claim 3 is characterized in that: The adapter plate (3) and the angle steel (6) are both made of stainless steel.

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