CN104060825B - Adjustable general stair template - Google Patents

Abstract

The invention discloses an adjustable general staircase formwork, which comprises a step surface formwork (3), a step kick plate formwork (4) and a side formwork (1); a length adjustment structure is arranged on the step surface formwork (3) , a height adjustment structure is provided on the step kick plate formwork (4), a telescopic adjustment structure is provided on the side formwork (1), and a stair angle adjustment structure is provided at the bottom of the connection between the stairs and the lower platform (6) ( 7), a kicker angle regulator (8) is provided at the bottom of each step kicker template (4), and the kicker angle adjuster (8) connects the step kicker template (4) with the adjacent step surface template (3) )connect. The invention can realize the adjustment of the length, height and angle of the stair formwork, has strong versatility, can realize recycling, can solve the problems of confusion and low efficiency in the use of stair formwork steel and wood at present, promote the process of industrialization and standardization of construction engineering, and reduce Reduce energy consumption and reduce construction costs.

Description

Adjustable Universal Stair Formwork

technical field

The invention belongs to the technical field of building construction, and in particular relates to an adjustable universal staircase formwork.

Background technique

After years of development in concrete structure construction, a variety of formwork systems have been formed, but most of the formwork for stairs is still in the original wood state. Although there are some areas and projects that use shaped steel forms, the shaped steel forms can only be used for a single project. Once the engineering structure is completed, the special shaped steel formwork will become scrap iron, resulting in the waste of steel during construction and increasing the construction cost. Hidden danger to quality.

In order to realize the repeated turnover of stair formwork, many technical personnel in the art have carried out a large amount of exploration and innovation, as disclosed in the open data of CN202831629U of Chinese patent literature authorization announcement a kind of assembled steel-wood stair formwork, it includes The wooden formwork at the bottom of the stairs to be poured, the formwork support assembly at the bottom of the wooden formwork, a pair of hanging formwork steel beams located above the wooden formwork and added between the adjacent upper and lower staircase turnstables, and the hanging formwork steel beams A plurality of stepping steel formworks arranged at intervals in the extension direction and connected to the lower part of the formwork steel beam. This technology can effectively ensure the cross-sectional size of the stair steps, the appearance quality of the formed concrete is good, and the formwork can be used repeatedly. However, this patented technology still does not solve the problem of the versatility of the formwork, that is to say, for stairs of different sizes, the formwork cannot be adjusted and reused, and the process of assembling the formwork is relatively cumbersome, which is not conducive to rapid construction.

Contents of the invention

The purpose of the present invention is to provide a universal stair formwork with high construction efficiency, which can replace scattered wood, enable stair and structure to be integrated, and the key point is to allow multiple projects to be reused, so as to solve the confusion and inefficiency of the use of steel and wood in the current stair formwork problems, promote the process of industrialization and standardization of construction engineering, while reducing energy consumption and construction costs.

For realizing the purpose of the invention, the present invention adopts such technical scheme:

An adjustable universal stair formwork is used for pouring concrete stairs, the stairs include an upper platform and a lower platform and a stair section between the two consisting of steps, wherein the formwork includes a step surface formwork, a step kick Plate formwork and side formwork, the side formwork is fixed by the formwork side bracket; there is a length adjustment structure on the step surface formwork, a height adjustment structure on the step kick plate formwork, and a telescopic adjustment structure on the side formwork , there is a stair angle adjustment structure at the bottom of the connection between the stairs and the lower platform, and a kicker angle regulator is provided at the bottom of each step riser formwork, and the riser angle adjuster connects the step riser formwork with the adjacent step surface formwork connect.

Both the length adjustment structure and the height adjustment structure include two angle steel connecting plates that can be spliced with each other, and an adjusting plate is superimposed on the two angle steel connecting plates and covers the joint of the two angle steel connecting plates, the angle steel connecting plate and the adjustment There are through grooves on the boards, and adjusting bolts are arranged in the through grooves. By adjusting the bolts to adjust the mutual position between the two angle steel connecting plates and the adjusting plate, the distance between the two angle steel connecting plates can be adjusted to realize the step surface formwork and step kicking. Adjustment of the length and height of the board formwork. The angle steel connecting plate is a structure formed by welding a thin steel plate on the angle steel and fixing it with the angle steel.

The telescopic adjustment structure adopts two channel steels of different sizes, and there is an empty groove in the middle, and the length can be adjusted after sliding each other, and is fixed with bolts.

The kicker angle regulator includes two adjustment plates that are stuck on both sides of the step kicker formwork, an arc-shaped groove is arranged on the adjustment plate, and an adjusting bolt that can clamp the step-kicker formwork is arranged in the arc-shaped groove , adjust the inclination angle of the step riser template relative to the step surface template by adjusting the bolts to clamp the step riser template at different positions in the arc groove.

The staircase angle adjustment structure is located at the triangular connection between the bottom of the stairs and the lower platform, and it includes at least two fan-shaped plates on both sides. An arc-shaped groove is arranged on the fan-shaped plate, and a clamping slot is arranged in the arc-shaped groove. Hold the adjusting bolt at the bottom of the stairs, and adjust the inclination angle of the whole staircase relative to the lower platform by locking the bottom of the stairs at different positions in the arc groove.

The formwork side brackets on both sides of the stairs are connected by connecting rods and turnbuckle bolts, two adjacent turnbuckle bolts are arranged crosswise, and the step surface formwork and step riser formwork of the stairs are positioned and fixed by the connecting rods.

The formwork of the present invention is welded into a movable support with ordinary angle steel and thin-walled section steel, and various sizes corresponding to stairs on the support can be adjusted, so that it can be applied to the construction of stairs of different sizes in different projects. The overall structure is composed of angle steel, thin-walled steel, plywood, bolts and so on. The formwork of the present invention can be applied to various staircase constructions after manual adjustment. The profile of the formwork of the present invention is an inverted tooth shape, and slide grooves and fixing bolts are provided on each longitudinal node of the angle steel to meet the formwork support requirements of different staircase profiles. On the basis of the above structure, it can be used in the construction of stairs in various projects together with commonly used ordinary plywood.

The stair formwork of the present invention is designed according to the specific project staircase before the construction of a certain project, and after adjusting the adjusting bolts to reach the designed size, the stair formwork of this project can be completed. After the completion of this project, the next project will readjust the adjusting bolts according to the design, so as to achieve the purpose of repeated use.

Description of the drawings,

Fig. 1 is the stair formwork overall arrangement diagram of the present invention;

Fig. 2 is a schematic side view of the length adjustment structure;

Fig. 3 is a schematic plan view of the length adjustment structure;

Fig. 4 is a schematic side view of the height adjustment structure;

Fig. 5 is a schematic plan view of the height adjustment structure;

Fig. 6 is a schematic diagram of a telescopic adjustment structure;

Fig. 7 is a structural schematic diagram of the kick plate angle regulator;

Fig. 8 is a schematic diagram of the stair angle adjustment structure;

Fig. 9 is a schematic diagram of the connection between the formwork side bracket, the connecting rod and the turnbuckle bolt.

Explanation of reference signs: 1-side formwork, 2-connecting support formwork, 3-step surface formwork, 4-step kick plate formwork, 5-upper platform, 6-lower platform, 7-stair angle adjustment structure, 8- Kicking plate angle adjuster, 9-angle steel connecting plate, 10-adjusting plate, 11-through slot, 12-adjusting bolt, 13-channel steel, 14-empty slot, 15-square plate, 16-arc slot, 17- Fan-shaped plate, 18-form side bracket, 19-connecting rod, 20-turnbuckle bolt.

detailed description,

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, the present invention is used for the pouring of concrete stairs, and this type of stairs includes an upper platform 5 and a lower platform 6 and a staircase section formed by steps between the two. The stair formwork includes step surface formwork 3, step kick plate formwork 4 and side formwork 1; a length adjustment structure is provided on the step surface formwork 3, a height adjustment structure is provided on the step kick plate formwork 4, and a There is a telescopic adjustment structure, a stair angle adjustment structure 7 is provided at the bottom of the connection between the stairs and the lower platform 6, and a kick board angle regulator 8 is provided at the bottom of each step kick board template 4, and the kick board angle regulator 8 will step The riser formwork 4 is connected with the adjacent step surface formwork 3 .

See Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the length adjustment structure and the height adjustment structure of the stair formwork include two angle steel connecting plates 9 that can be spliced with each other, and one adjusting plate 10 is superimposed on the two angle steel connecting plates 9 and cover the joint of two angle steel connecting plates 9, the angle steel connecting plate 9 and the adjusting plate 10 are provided with a through groove 11, and the through groove 11 is provided with an adjusting bolt 12, and the two angle steel connecting plates 9 are adjusted by adjusting the adjusting bolt 12. The distance between the two angle steel connecting plates 9 can be adjusted by adjusting the mutual position between the plates 10 so as to realize the adjustment of the length and height of the step surface formwork 3 and the step riser formwork 4 . The angle steel connecting plate 9 is a thin steel plate welded on the angle steel, and is fixed together with the structure formed by the angle steel.

As shown in Figure 6, the telescopic adjustment structure is to adopt two channel steels 13 of different sizes, with an empty groove 14 left in the middle, which can adjust the length after sliding each other and fix with bolts. It can also be adjusted in the way that the adjustment plate 10 is combined with the adjustment bolt 12 as the length and height adjustment structure.

As shown in Figure 7, the kicking board angle regulator 8 comprises two square boards 15 stuck on both sides of the step kicking board template 4, the square board 15 is provided with an arc groove 16, and the arc groove 16 is provided with a clamping Hold the adjustment bolt 12 of the step riser formwork 4, and adjust the step riser formwork 4 relative to the step surface formwork by clamping the step riser formwork 4 at different positions in the arc groove 16 by the adjustment bolts 12 3 tilt angles.

As shown in Figure 8, the stair angle adjustment structure 7 is located at the triangular connection between the bottom of the stair and the lower platform 6, that is, the triangular position formed between the bottom of the stair and the lower platform 6 and the connecting formwork frame 2 supported below, which includes Be located at least two fan-shaped plates 17 on both sides, the tip of the fan-shaped plates 17 is upward, and the fan-face is downward, just stuck between the bottom of the stairs and the lower platform 6, the fan-shaped plates 17 are provided with an arc-shaped groove 16, arc-shaped The slot 16 is provided with an adjusting bolt 12 that can clamp the bottom of the stairs, and the angle of inclination of the whole staircase relative to the lower platform 6 is adjusted by the adjustment bolts 12 clamping the bottom of the stairs at different positions in the arc slot 16 .

As shown in Figure 9, connecting rods 19 and turnbuckle bolts 20 are provided between the formwork side brackets 18 on both sides of the stairs for connection, and two adjacent turnbuckle bolts 20 are arranged crosswise. 4 is positioned and fixed by connecting rod 19.

The present invention is implemented like this:

Before the construction of the project, according to the size of the stairs designed by the project, the size of the staircase formwork is adjusted and fixed step by step. Adjust the length and width of the brackets on both sides, and fix it in combination with the support frame in the construction. Adjust the step size and spacing through the length adjustment structure and height adjustment structure on the stair formwork. In addition, the angle adjustment structure is used to adjust the inclination angle of the entire staircase, the step surface and the step riser of the staircase.

Then use ordinary plywood formwork to cut the stair bottom formwork according to the design size, and fix it on the bottom cross bracket. Cut the formwork on both sides of the stairs according to the design size and fix it on the bracket. The overall adjustment and fixation can complete the stair section formwork. After the above operations are completed on the single-run stair section, the connection with the inner support formwork is removed, and the stair formwork can be completed by directly connecting with the inner support frame in the construction of the upper stair section, without adjusting other dimensions.

When the next new project starts, this template can be reused and the above process can be repeated.

Certainly, the above are only specific application examples of the present invention, and there are other implementation modes in the present invention, and all technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of protection required by the present invention.

Claims (4)

1. An adjustable universal stair formwork, which is used for pouring concrete stairs, the stairs include an upper platform (5) and a lower platform (6) and a stair section composed of steps between them, its characteristics Because: the formwork includes step surface formwork (3), step kick plate formwork (4) and side formwork (1); a length adjustment structure is arranged on the step surface formwork (3), and a There is a height adjustment structure, a telescopic adjustment structure is provided on the side formwork (1), a staircase angle adjustment structure (7) is provided at the bottom of the connection between the stairs and the lower platform (6), and each step kick plate formwork (4) There is a kick plate angle adjuster (8) at the bottom, and the kick plate angle adjuster (8) connects the step kick plate template (4) with the adjacent step surface template (3); the length adjustment structure and height The adjustment structures all include two angle steel connecting plates (9) that can be spliced with each other, and an adjusting plate (10) is superimposed on the two angle steel connecting plates (9) and covers the joint of the two angle steel connecting plates (9). Both the angle steel connecting plate (9) and the adjusting plate (10) are provided with a through groove (11), and the through groove (11) is provided with an adjusting bolt (12), and the two angle steel connecting plates (9) are adjusted through the adjusting bolt (12). ) and the adjustment plate (10) to adjust the distance between the two angle steel connecting plates (9) so as to realize the adjustment of the length and height of the step surface formwork (3) and the step riser formwork (4). 2. The adjustable universal stair formwork according to claim 1, characterized in that: the riser angle adjuster (8) includes two square plates (15) stuck on both sides of the step riser formwork (4) , the square plate (15) is provided with an arc-shaped groove (16), and the arc-shaped groove (16) is provided with an adjusting bolt (12) that can hold the step kick plate template (4), and the adjusting bolt (12) ) clamping the step riser template (4) at different positions in the arc groove (16) to adjust the inclination angle of the step riser template (4) relative to the step surface template (3). 3. The adjustable universal stair formwork according to claim 1, characterized in that: the stair angle adjustment structure (7) is provided at the triangular connection between the bottom of the stair and the lower platform (6), and it includes two There are at least two fan-shaped plates (17) on the side, and an arc-shaped groove (16) is provided on the fan-shaped plate (17), and an adjusting bolt (12) that can clamp the bottom of the stairs is arranged in the arc-shaped groove (16). Bolts (12) clamp the bottom of the stairs at different positions in the arc groove (16) to adjust the inclination angle of the whole staircase relative to the lower platform (6). 4. The adjustable universal stair formwork according to claim 1, characterized in that: the angle steel connecting plate (9) is a structure formed by welding a thin steel plate on the angle steel and fixing it together with the angle steel.