A building staircase formwork supporting structure

Abstract

The present invention provides a building staircase formwork support structure, the staircase formwork includes a staircase base formwork and a staircase shell formwork, the upper and lower ends of the staircase base formwork are respectively connected to the upper and lower ends of the staircase shell formwork through a fixed cross bar, the support structure includes a load-bearing pier, a support screw barrel, a support screw and a fixed plate, the fixed plate is installed on the staircase base formwork, the load-bearing pier is arranged at the junction of the building wall and the building floor, one end of the support screw barrel is rotatably connected to the load-bearing pier, the other end of the support screw barrel is screwed to one end of the support screw, the other end of the support screw is screwed to the fixed plate and its terminal end face is against the staircase base formwork. By adopting the technical solution of the present invention, the supporting posture or state of the staircase formwork can be adjusted by adjusting the matching length of the support screw and the support screw barrel, and a clearance margin for adjustment is also reserved between the support screw and the staircase base formwork, which can prevent the local deformation of the staircase formwork from being too large during the pouring of concrete and reduce safety hazards.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, in particular to a building staircase formwork supporting structure. Background Art

[0002] In the construction of building projects, in order to obtain a building with a special shape and structure through concrete pouring, it is necessary to pre-build a prefabricated formwork with a corresponding shape of the mold cavity. For example, when constructing a building staircase with an irregular shape, it is necessary to first prepare the corresponding staircase formwork in advance, and it is necessary to make the staircase formwork support stable, so that the supporting structure of the staircase formwork is sufficient to withstand the impact or pressure caused by the concrete on the staircase formwork during the pouring of concrete, and prevent the staircase formwork support structure from collapsing and causing safety accidents. The existing staircase formwork support structure generally adopts a rigid support structure, and there is no room for adjustment between the support and the staircase formwork. Since the concrete will cause uneven impact on various areas of the staircase formwork during the pouring process, it will cause local deformation of the staircase formwork and the corresponding support parts, affecting the quality of the staircase casting and forming, and even causing local collapse safety accidents, affecting the construction progress. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a building staircase formwork supporting structure.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a building stair formwork supporting structure, the stair formwork comprises a stair base formwork, a stair shell formwork and a shaping cross bar, the upper and lower ends of the stair base formwork are respectively connected to the building wall and the building floor through hinge supports, one end of the shaping cross bar is hinged on the hinge support, the other end of the shaping cross bar is sequentially fixedly connected with a support ring and screwed with a locking nut, the upper and lower ends of the stair shell formwork are respectively clamped between the support ring and the locking nut, the building stair formwork supporting structure comprises a load-bearing pier, a support screw barrel, a support screw and a fixing plate, the fixing plate is installed on the stair base formwork, the load-bearing pier is arranged at the junction of the building wall and the building floor, one end of the support screw barrel is rotatably matched with the load-bearing pier, the other end of the support screw barrel is screwed with one end of the support screw, the other end of the support screw is screwed with the fixing plate and its terminal end face is against the stair base formwork.

[0006] The load-bearing pier is in an "L" shape and has a first support arm and a second support arm. The first support arm is arranged against the wall of the building, and the second support arm is laid on the floor of the building.

[0007] The end surfaces of the first support arm and the second support arm are configured as support surfaces inclined relative to a horizontal plane, and the support screw barrel is connected to the support surface.

[0008] The inclination angle between the support surface and the horizontal plane is 45°.

[0009] An insert piece is sandwiched between the end surface of the supporting screw and the stair bottom mold.

[0010] The insert piece has an outer shape of an "L" shape.

[0011] The outer surface of the insert piece is wrapped with a rubber sleeve.

[0012] The outer surface of the supporting screw barrel is also fixedly connected with a torsion rod.

[0013] The fixing plate is installed on the stair bottom mold by using butterfly bolts.

[0014] At least half of the hinge support is embedded in the wall of the building or in the bottom plate of the building.

[0015] The beneficial effects of the present invention are as follows: by adopting the technical scheme of the present invention, the end face of the terminal end of the support screw is supported against the stair bottom formwork, and the supporting posture or state of the stair formwork can be adjusted by adjusting the matching length of the support screw and the support screw barrel. The end face of the terminal end of the support screw is a conical surface, and an insert piece is sandwiched between the support screw and the stair bottom formwork, so that an adjustable gap margin is set between the support screw and the stair bottom formwork, which is convenient for adjustment. The rubber sleeve wrapped on the insert piece increases the friction resistance between the support screw and the stair bottom formwork. During the pouring of concrete, the supporting part of the support screw can change according to the impact of concrete, avoiding the safety accident of local deformation of the stair bottom formwork leading to collapse. In addition, at least half of the body of the support is embedded in the wall or floor of the building, which can maintain the stability of the entire supporting structure, prevent the hinge support from slipping, and ensure the quality of the final stair casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 The present invention Figure 1 A partial enlarged schematic diagram in the middle;

[0018] Figure 3 The present invention Figure 1 A partial enlarged schematic diagram of point B in the middle.

[0019] In the figure: 1-stair bottom mold, 2-stair shell mold, 3-shaped cross bar, 4-hinge support, 5-support ring, 6-locking nut, 7-load-bearing pier, 8-support screw barrel, 9-support screw, 10-fixing plate, 11-insert piece, 12-torsion bar, 13-butterfly bolt, 14-diagonal brace, 701-support surface. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0021] like Figures 1 to 3 As shown, the present invention provides a building stair formwork supporting structure, the stair formwork comprises a stair base formwork 1, a stair shell formwork 2 and a shaping cross bar 3, the upper and lower ends of the stair base formwork 1 are respectively connected to the building wall and the building floor through a hinge support 4, one end of the shaping cross bar 3 is hinged on the hinge support 4, the other end of the shaping cross bar 3 is fixedly connected with a support ring 5 and screwed with a locking nut 6 in sequence, the upper and lower ends of the stair shell formwork 2 are respectively clamped between the support ring 5 and the locking nut 6, the building stair formwork supporting structure comprises a load-bearing pier 7, a support screw barrel 8, a support screw 9 and a fixing plate 10, the fixing plate 10 is installed on the stair base formwork 1, the load-bearing pier 7 is arranged at the junction of the building wall and the building floor, one end of the support screw barrel 8 is rotatably connected to the load-bearing pier 7, the other end of the support screw barrel 8 is screwed with one end of the support screw 9, the other end of the support screw 9 is screwed with the fixing plate 10 and its end end face is against the stair base formwork 1.

[0022] Furthermore, the load-bearing pier 7 has an "L" shape, and has a first support arm and a second support arm, wherein the first support arm is arranged against the wall of the building, and the second support arm is laid on the floor of the building. The end surfaces of the first support arm and the second support arm are arranged as a support surface 701 inclined relative to the horizontal plane, and the support screw 8 is connected to the support surface 701. Preferably, the inclination angle between the support surface 701 and the horizontal plane is 45°. By adopting the technical solution of the present invention, by making the first support arm of the load-bearing pier 7 be arranged against the wall of the building, and the second support arm of the load-bearing pier 7 be laid on the floor of the building, the layout posture of the stair formwork is made to use the load-bearing pier 7 as a unified reference object, so that the stair formwork has a stable posture and is shaped, laying a foundation for improving the quality of concrete pouring.

[0023] In addition, an insert piece 11 is inserted between the end surface of the supporting screw rod 9 and the stair bottom mold 1. The insert piece 11 is preferably in an "L" shape. The outer surface of the insert piece 11 is wrapped with a rubber sleeve. The end surface of the supporting screw rod 9 is a conical surface, so that the end surface of the supporting screw rod 9 and the stair bottom mold 1 still have an adjustable margin, which is convenient for adjustment, so that the stair template has a stable posture or shape.

[0024] In addition, a torsion bar 12 is fixedly connected to the outer surface of the support screw barrel 8. The fixing plate 10 is installed on the stair bottom mold 1 by using butterfly bolts 13. The technical solution of the present invention is adopted, and the matching length of the support screw barrel 8 and the support screw rod 9 is adjusted by setting the torsion bar 12, and the fixing plate can be more tightly connected to the stair bottom mold 1 by using the butterfly bolts 13.

[0025] Furthermore, at least half of the hinge support 4 is embedded in the building wall or the building floor. The staircase shell mold 2 is formed by connecting multiple vertical shell molds and multiple horizontal shell molds alternately end to end, and the outer surfaces of adjacent vertical shell molds and horizontal shell molds are connected together by diagonal braces 14.

[0026] By adopting the technical solution of the present invention, the end face of the supporting screw 9 is supported against the stair bottom form 1, and the supporting posture or state of the stair form can be adjusted by adjusting the matching length of the supporting screw and the supporting screw barrel. The end face of the supporting screw is a conical surface, and an insert is sandwiched between the supporting screw and the stair bottom form, so that an adjustable gap margin is set between the supporting screw and the stair bottom form, which is convenient for adjustment. The rubber sleeve wrapped on the insert increases the friction resistance between the supporting screw and the stair bottom form. During the pouring of concrete, the supporting part of the supporting screw can change according to the impact of concrete, avoiding the safety accident of local deformation of the stair bottom form leading to collapse. In addition, at least half of the body of the support is embedded in the wall or floor of the building, which can maintain the stability of the entire supporting structure, prevent the hinge support from slipping, and ensure the quality of the final stair casting.

[0027] In addition, by adopting the technical solution of the present invention, the stair base mold and the stair shell mold are connected as a whole through a shaping cross bar, so that the stair formwork has a stable shape, which is beneficial to improving the quality of concrete pouring.

Claims

1. A building staircase formwork support structure, characterized in that: The staircase formwork comprises a staircase base formwork (1), a staircase shell formwork (2) and a shaping cross bar (3). The upper and lower ends of the staircase base formwork (1) are respectively connected to the building wall and the building floor through a hinge support (4). One end of the shaping cross bar (3) is hinged to the hinge support (4). The other end of the shaping cross bar (3) is sequentially fixedly connected to a support ring (5) and screwed to a locking nut (6). The upper and lower ends of the staircase shell formwork (2) are respectively clamped between the support ring (5) and the locking nut (6). The building staircase formwork supporting structure comprises a load-bearing pier (7), a support screw barrel (8), a support screw rod (9) and a fixing plate (10). The fixing plate (10) is installed on the staircase base formwork (1). The load-bearing pier (7) is arranged at the junction of the building wall and the building floor. One end of the support screw barrel (8) is rotatably connected to the load-bearing pier (7). The other end of the support screw barrel (8) is screwed to one end of the support screw rod (9), and the other end of the support screw rod (9) is screwed to the fixing plate (10) and its end face abuts against the stair bottom mold (1); the load-bearing pier (7) has an "L" shape, and comprises a first support arm and a second support arm, the first support arm is arranged against the wall of the building, and the second support arm is laid on the floor of the building, the end faces of the first support arm and the second support arm are arranged as a support surface (701) inclined relative to the horizontal plane, the support screw barrel (8) is connected to the support surface (701), and the inclination angle between the support surface (701) and the horizontal plane is 45°; an insert piece (11) is also sandwiched between the end face of the support screw rod (9) and the stair bottom mold (1), the outer shape of the insert piece (11) is "L" shaped, and the outer surface of the insert piece (11) is wrapped with a rubber sleeve.

2. A building staircase formwork support structure as claimed in claim 1, characterized in that: The outer surface of the supporting screw barrel (8) is also fixedly connected to a torsion rod (12).

3. A building staircase formwork support structure as claimed in claim 1, characterized in that: The fixing plate (10) is mounted on the stair bottom formwork (1) by using butterfly bolts (13).

4. A building staircase formwork support structure as claimed in claim 1, characterized in that: At least half of the hinge support (4) is embedded in the wall or floor of the building.

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