Turnover and adjustable simple stair reinforcing mold suitable for residential structure engineering and mounting, adjusting and turnover method of turnover and adjustable simple stair reinforcing mold

Abstract

The invention provides a turnover and adjustable simple stair reinforcing mold suitable for residential structure engineering and a mounting, adjusting and turnover method of the turnover and adjustable simple stair reinforcing mold. The reinforcing mold comprises a rectangular square steel support, and long-strip-shaped holes are evenly formed in the rectangular square steel support at intervals and serve as adjustable bolt fixing holes used for being fixed to connecting angle iron; the stair step plate is formed by welding a plurality of square steel and a steel plate, nuts are welded to the ends of the square steel transversely arranged at the two ends of the stair step plate so that the stair step plate can be fixed to stair side plates, and holes are formed in the square steel vertically arranged in the middle so that the stair step plate can be fixed to connecting angle iron. Holes are formed in the stair side plates to serve as adjustable bolt holes so that the stair side plates can be fixed to stair step plates. The stair step plate can be further designed to be of a structure with the middle assembled through a telescopic device so that the step width can be flexibly adjusted. The stair formwork reinforcing construction efficiency and quality are improved, the step height and width adjustment is flexible, the universality is good, and the utilization rate is high.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and in particular relates to a simple stair reinforcement mould which is turnable and adjustable and is suitable for residential structural engineering, and an installation, adjustment and turnover method thereof. Background Art

[0002] Since the formwork support method for residential building structures is mainly manual, the construction quality of on-site formwork support fluctuates greatly depending on the technical level of the workers. The existing wooden staircase reinforcement molds need to be customized according to the requirements of the drawings. Due to the different specifications of the stairs, their versatility is poor and the utilization rate is low, resulting in material waste and increased costs. The wooden prefabricated staircase mold can be recycled a small number of times and the quality is difficult to guarantee. At the same time, due to the large number of staircase parts, the efficiency of formwork support is low. After the pouring of the current layer of concrete is completed, the stairs need to be dismantled in sections, and then the low-quality and low-efficiency mode is repeated. Due to the material of the bamboo plywood itself, the formwork cannot be used after several turnovers and needs to be replaced, thereby increasing the cost. At the same time, it consumes too much and does not meet the current green environmental protection requirements. To this end, the present invention designs a new type of simple staircase reinforcement mold that is suitable for residential structural engineering and can be turned over and adjusted, and its installation and adjustment turnover method. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a simple stair reinforcement mold that is rotatable and adjustable and suitable for residential structural engineering, and an installation and adjustment turnover method thereof, which improves the construction efficiency and quality of stair formwork reinforcement, and solves the problem raised in the background technology that the quality fluctuation of on-site formwork support is large due to manual construction.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] A simple stair reinforcement mold which is suitable for residential structural engineering and can be turned around and adjusted comprises two rectangular square steel brackets, a plurality of stair treads, a plurality of connecting angle irons and two stair side panels; a plurality of long strip bolt mounting holes are evenly arranged on the rectangular square steel brackets, nuts are welded at both ends of the stair treads, and long strip bolt mounting holes are arranged near the middle; a plurality of long strip bolt mounting holes are evenly arranged on the stair side panels; a mounting circular hole is arranged on the upper part of the connecting angle iron, and a long strip bolt mounting hole is arranged on the lower part; the rectangular square steel bracket is connected to the upper part of the connecting angle iron by bolts, the stair tread is connected to the lower part of the connecting angle iron by bolts, and the two ends of the stair tread are connected to the stair side panels by bolts.

[0006] Furthermore, the stair treads include two main parts with the same structural dimensions, both of which are formed by welding multiple square steels A and a steel plate A, and a retractable device is installed between the main parts to form a complete stair tread; the square steels A arranged horizontally at both ends of the stair treads are welded with nuts for fixing to the stair side panels, and the square steels A arranged vertically near the middle position are opened with long strip bolt mounting holes for fixing to the connecting angle irons.

[0007] Furthermore, the retractable device includes two channel steels that are plugged into each other, and the two channel steels are provided with long strip-shaped bolt mounting holes at the plug-in parts. The plug-in parts of the two channel steels are fixed by bolts, and the plug-in length is adjustable. The bottoms of the plug-in parts of the two channel steels are flush, and the cross-sectional dimensions of the remaining parts are the same; the other ends of the two channel steels are provided with bolt mounting circular holes, and are respectively inserted into the square steels A of the two main parts of the stair treads, and are fixed to the square steels A by bolts, so that the overall length of the stair treads is adjustable and the tread width is adjustable.

[0008] Furthermore, the length of the connecting portion of the two mutually connected channel steels in the retractable device is 50 cm.

[0009] Furthermore, two ends of the rectangular steel bracket are bent at a certain angle in opposite directions for cooperation with the template during subsequent installation.

[0010] Furthermore, a strip-shaped bolt mounting hole is provided on the rectangular square steel bracket at intervals of 10 cm, and the length of the strip-shaped bolt mounting hole is 20 cm.

[0011] Furthermore, the cross-sectional dimensions of the square steel A are 40×40×3 mm, and the thickness of the steel plate A is 3 mm.

[0012] Furthermore, the stair side panels are formed by welding two square steels B and a steel plate B; the cross-sectional dimensions of the square steel B are 40×40×3mm, and the thickness of the steel plate B is 3mm; a plurality of 15cm long strip-shaped bolt mounting holes are provided on the stair side panels at intervals of 10cm.

[0013] Furthermore, the connecting angle iron has a size of 40 mm×40 mm×5 mm.

[0014] A method for installing, adjusting and rotating a simple stair reinforcement mold that is suitable for residential structural engineering and can be rotated and adjusted is characterized by comprising the following steps: Mould installation: According to the construction drawings, use the connecting angle iron, bolts and matching nuts to preliminarily connect the processed stair treads with the rectangular square steel bracket. According to the relevant size requirements of the stair construction, adjust the position of each bolt to ensure that the step width and step height meet the requirements, then tighten the nuts, apply the release agent after inspection and acceptance, and wait for hoisting; The assembled stair treads and rectangular steel brackets are hoisted by a tower crane and placed on the stair working surface with the cooperation of workers. The temporary supports at both ends are padded with homemade concrete pads. The stair side panels are inserted and bolted in for preliminary fixation. After the position correction is completed, the bolts are tightened securely. After the entire reinforcement mold is installed, the wooden planks are lowered on the inside of the stairs to fix the stair side panels. The main keel uses double steel pipes and tension bolts to fix the wooden planks into a whole. Laying and pouring concrete: After the stair slab support is completed and the steel bars are tied, install this mold device and then pour the concrete; Mold disassembly turnover: After the concrete strength is reached, reverse the nuts in the corresponding position, remove the stair side panels, use a tower crane to lift the bracket consisting of the stair treads and the rectangular square steel bracket, and put it into the upper staircase for repeated installation. After the construction of this single building is completed, adjust the corresponding bolt position to adjust the step height and step width for turnover use.

[0015] The present invention has the following beneficial effects: The present invention is used for the formwork reinforcement component before pouring concrete on the stairs in the residential structure. As a reusable and adjustable variable stair reinforcement tool, it can effectively improve the construction speed, molding quality and turnover efficiency of the stair formwork, and ensure the safe construction of the stairs; and the overall adjustment is flexible, the application range is wider, the versatility is good, and the utilization rate is high. The mold of the present invention is mainly made of steel plates, galvanized rectangular square steel, angle steel and other materials. It can be adjusted with the rectangular square steel adjustment hole, can be modularized and turned over, and is not easy to be damaged. It greatly improves the turnover rate and support speed of the mold, reduces the material consumption and labor costs, and shortens the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a rectangular square steel bracket; Figure 2 This is a schematic diagram of stair treads; Figure 3 This is a schematic diagram of the stair side panel; Figure 4 This is a schematic diagram of connecting angle irons; Figure 5 is a schematic diagram of a retractable device; Figure 6 This is an overall schematic diagram of the reinforcement mold in Example 1; In the figure: 1-rectangular square steel bracket; 2-stair tread; 201-square steel A; 202-steel plate A; 3-connecting angle iron; 4-stair side plate; 401-square steel B; 402-steel plate B; 5-retractable device; 6-bolt; DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0018] like Figure 6 As shown, the simple stair reinforcement mold suitable for residential structural engineering that is turnaround and adjustable according to the present invention includes a rectangular square steel bracket 1, stair treads 2, stair side panels 4, connecting angle irons 3, a retractable device 5, and bolts 6.

[0019] like Figure 1 , 6 As shown, the two ends of the rectangular square steel bracket 1 are bent at a certain angle in opposite directions for cooperation with the template during subsequent installation. A long hole is opened at a certain distance (preferably 10 cm in this embodiment) in the center of the rectangular square steel bracket 1 as an adjustable bolt fixing hole. In this embodiment, preferably, the length of the adjustable bolt fixing hole is 20 cm.

[0020] like Figure 2 , 5 、6 as shown ( Figure 5 The retractable device 5 is not shown in the figure), the stair tread 2 is used for the stair tread forming template, the two main parts of the stair tread 2 have the same structural dimensions, and are both composed of multiple square steels A201 and a steel plate A202 welded and fixed, and the retractable device 5 is installed between the main parts to form a complete stair tread 2. The ends of the square steels A201 arranged horizontally at both ends of the stair tread 2 are welded with nuts for subsequent fixation with the stair side panels 4, and the square steels A201 arranged vertically near the middle position are opened with long holes as bolt mounting holes for subsequent fixation with the connecting angle iron 3. Preferably, the cross-sectional dimensions of the square steel A201 are 40×40×3mm, and the thickness of the steel plate A202 is 3mm.

[0021] like Figure 2 , 5 、6 as shown ( Figure 5 The retractable device 5 is not shown in the figure), the retractable device 5 includes two channel steels plugged into each other, and the two channel steels have long strip-shaped bolt mounting holes at the plug-in parts. The plug-in parts of the two channel steels are fixed by bolts 6, and the plug-in length is adjustable. In this embodiment, preferably, the length of the plug-in part is 50 cm; the cross-sectional dimensions of the remaining parts of the two channel steels are the same, and the other ends of the two channel steels are provided with bolt mounting circular holes, which are respectively inserted into the square steels A201 of the two main parts of the stair treads 2, and are fixed to the square steels A201 by bolts, so that the overall length of the stair treads 2 is adjustable, and the step width is adjustable.

[0022] like Figure 3 , 6As shown, the stair side panel 4 is composed of two square steels B401 and a steel plate B402 welded and fixed. Preferably, the cross-sectional size of the square steel B401 is 40×40×3mm, and the thickness of the steel plate B402 is 3mm; holes are evenly spaced on the square steel B401 and the steel plate B402 of the stair side panel 4 as adjustable bolt holes, so as to be subsequently fixed to the stair treads 2 by bolts 6; preferably, the opening interval of the adjustable bolt holes is 10cm, and the length of the adjustable bolt holes is 15cm.

[0023] like Figure 4 , 6 As shown, the connecting angle iron 3 preferably adopts an angle iron with a size of 40mm×40mm×5mm; the connecting angle iron 3 is provided with a mounting circular hole on the upper part and a long hole on the lower part, which are respectively used to connect with the rectangular square steel bracket 1 and the stair tread 2, and then serve as an intermediate connecting piece to connect the stair tread 2 and the rectangular square steel bracket 1 into a whole.

[0024] The installation, adjustment and turnover method of the above-mentioned simple stair reinforcement mold which is suitable for residential structural engineering and can be turned around and adjusted is as follows: (1) Mold installation: According to the construction drawings, use the connecting angle iron 3, bolts 6 and matching nuts to make a preliminary connection between the processed stair treads 2 and the rectangular square steel bracket 1. According to the relevant dimensional requirements of the stair construction (step width requirements, step height requirements), adjust the position of each bolt to ensure that the step width and step height meet the requirements, then tighten the nuts, and after inspection and acceptance, apply the release agent and wait for hoisting.

[0025] The entire assembled bracket is lifted by a tower crane and placed on the stair working surface with the cooperation of workers. The temporary supports at both ends are padded with homemade concrete pads of 100mm×(plate thickness-2mm)×(plate thickness-2mm). The stair side panels 4 (according to the position of the bolt holes) are inserted on both sides and the bolts are screwed in for initial fixation. After the position correction is completed, the bolts 6 are tightened securely.

[0026] After the entire reinforcement mold is installed, the wooden squares are lowered on the inside of the stairs to fix the stair side panels 4, and the main keel uses double steel pipes and tension bolts to fix the wooden squares into a whole.

[0027] (2) Laying and pouring concrete: This mold device is installed after the stair base support is completed and the steel bars are tied, and then the concrete is poured.

[0028] (3) Mold disassembly turnover: After the concrete strength is reached, the nut is reversed to remove the stair side plate 4. At this time, the tower crane can be used to lift the stair tread 2 and the rectangular square steel bracket 1, and put it into the upper staircase for repeated installation. After the construction of this single building is completed, only the corresponding bolt position needs to be adjusted to adjust the step height and step width. However, for residential stairs of different heights, the rectangular square steel bracket 1 can be welded to lengthen or shorten, and it needs to be adjusted before use.

[0029] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. A simple stair reinforcement mold suitable for residential structural engineering, which is turnable and adjustable, characterized in that: The invention comprises two rectangular square steel brackets (1), a plurality of stair treads (2), a plurality of connecting angle irons (3), and two stair side panels (4); a plurality of long strip bolt mounting holes are evenly spaced on the rectangular square steel brackets (1); nuts are welded to the ends of the stair treads (2); and long strip bolt mounting holes are formed near the middle; a plurality of long strip bolt mounting holes are evenly spaced on the stair side panels (4); a mounting circular hole is formed on the upper part of the connecting angle iron (3), and a long strip bolt mounting hole is formed on the lower part; the rectangular square steel brackets (1) are connected to the upper part of the connecting angle iron (3) by bolts (6); the stair treads (2) are connected to the lower part of the connecting angle iron (3) by bolts (6); and the two ends of the stair treads (2) are connected to the stair side panels (4) by bolts (6).

2. The simple stair reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 1 is characterized in that: The stair tread (2) comprises two main parts with the same structural dimensions, each of which is formed by welding a plurality of square steels A (201) and a steel plate A (202), and a retractable device (5) is installed between the main parts to form a complete stair tread (2); the square steels A (201) arranged horizontally at both ends of the stair tread (2) are welded with nuts for fixing to the stair side plates (4), and the square steels A (201) arranged vertically near the middle are provided with long strip-shaped bolt mounting holes for fixing to the connecting angle iron (3).

3. The simple stair reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 2 is characterized in that: The retractable device (5) comprises two mutually plugged channel steels, each of which has a long strip-shaped bolt mounting hole at the plug-in portion, the plug-in portions of the two channel steels are fixed by bolts (6), and the plug-in length is adjustable, the bottoms of the plug-in portions of the two channel steels are flush, and the cross-sectional dimensions of the remaining portions are the same; the other ends of the two channel steels are each provided with a bolt mounting circular hole, which is respectively inserted into the square steel A (201) of the two main parts of the stair tread (2), and fixed to the square steel A (201) by bolts (6), so that the overall length of the stair tread (2) is adjustable, and the tread width is adjustable.

4. The simple stair reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 3 is characterized in that: The length of the connecting portion of the two mutually connected channel steels in the telescopic device (5) is 50 cm.

5. The simple stair reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 1 is characterized in that: The two ends of the rectangular steel bracket (1) are bent in opposite directions at a certain angle for cooperation with the template during subsequent installation.

6. The simple staircase reinforcement mold that is turnable and adjustable for residential structural engineering according to claim 1 is characterized in that: The rectangular square steel bracket (1) is provided with a strip-shaped bolt mounting hole at intervals of 10 cm, and the length of the strip-shaped bolt mounting hole is 20 cm.

7. The simple staircase reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 2 is characterized in that: The cross-sectional dimensions of the square steel A (201) are 40×40×3 mm, and the thickness of the steel plate A (202) is 3 mm.

8. The simple stair reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 1 is characterized in that: The stair side plate (4) is formed by welding two square steels B (401) and a steel plate B (402); the cross-sectional dimensions of the square steel B (401) are 40×40×3 mm, and the thickness of the steel plate B (402) is 3 mm; a plurality of strip-shaped bolt mounting holes with a length of 15 cm are provided on the stair side plate (4) at intervals of 10 cm.

9. The simple staircase reinforcement mold that is turnable and adjustable and suitable for residential structural engineering according to claim 1 is characterized in that: The connecting angle iron (3) has a size of 40 mm×40 mm×5 mm.

10. A method for installing, adjusting and rotating a simple stair reinforcement mold that is suitable for residential structural engineering and can be rotated and adjusted as described in claim 4, characterized in that: The process includes the following: Mould installation: According to the construction drawings, the processed stair treads (2) are preliminarily connected to the rectangular square steel bracket (1) using connecting angle irons (3), bolts (6) and matching nuts. According to the relevant dimensional requirements of the stair construction, the positions of the bolts (6) are adjusted to ensure that the step width and step height meet the requirements. The nuts are then tightened. After inspection and acceptance, a release agent is applied and the stair treads are ready for hoisting. The assembled stair treads (2) and rectangular steel brackets (1) are hoisted by a tower crane and placed on the stair work surface. The workers cooperate to put them in place. The temporary supports at both ends are padded with homemade concrete pads. The stair side panels (4) are inserted on both sides and screwed in with bolts for preliminary fixation. After the position correction is completed, the bolts (6) are tightened securely. After the entire reinforcement mold is installed, the wooden planks are lowered on the inside of the stairs to fix the stair side panels (4), and the main keel is made of double steel pipes and tension bolts to fix the wooden planks into a whole; Laying and pouring concrete: After the stair slab support is completed and the steel bars are tied, install this mold device and then pour the concrete; Mold disassembly turnover: After the concrete strength is reached, the nuts at the corresponding positions are reversed, the stair side panels (4) are removed, and the support consisting of the stair treads (2) and the rectangular square steel support (1) is hoisted by a tower crane and placed in the upper staircase for repeated installation. After the construction of the single building is completed, the corresponding bolt positions are adjusted to adjust the step height and step width, and the building can be used in a cyclic manner.

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