Detachable bottom support device for stair support

Abstract

This utility model relates to a detachable stair support bottom support device, comprising: an upper telescopic support, which includes a lower sleeve and an upper upright, the upper upright having an upper thread and a lower thread, the lower thread being threaded to the lower sleeve, and the upper thread of the upper upright being used to connect to the lower end of the stair support upright; and a lower pre-embedded positioning support, which includes a pre-embedded upright and a bottom support frame, the bottom support frame being fixed to the lower end of the pre-embedded upright, and the upper end of the pre-embedded upright being threaded to the sleeve. This utility model, while retaining the strict limitation of the stair support upright achieved by pouring concrete, also facilitates the reuse of the stair support, thus avoiding damage to the stair support and floor surface during formwork removal.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a detachable staircase support device at the bottom. Background Technology

[0002] In traditional construction, stair supports are often directly poured into concrete, leaving holes that can easily lead to leakage. Furthermore, the uprights need to be cut and scrapped after the concrete has hardened, resulting in significant material waste. For example, Chinese Utility Model Patent Publication No. CN222362760 U discloses a stair support frame, including a connecting cylinder with internally threaded cylinders at both ends. The internally threaded cylinders are internally threaded and connected to a telescopic threaded rod. A locking assembly is provided between the internally threaded cylinders and the connecting cylinder to lock them together. The locking assembly includes multiple snap-fit ​​seats at the ends of the connecting cylinders, each with a snap-fit ​​groove. Multiple rotating blocks are hinged inside the internally threaded cylinders, and a swing threaded rod is provided on one side of each rotating block. The connecting seats used in this design are fixed to the floor slab with drilled bolts. After disassembly, bolt holes are left in the floor slab, and refilling these holes will still cause leakage risks. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a detachable bottom support device for stair supports, which, while retaining the concrete pouring to achieve strict limiting of the stair support uprights, also facilitates the reuse of the stair supports, so as to avoid damage to the stair supports and floor slabs during demolding.

[0004] To solve the above problems, a detachable staircase support bottom device is adopted, which includes:

[0005] The upper telescopic support includes a lower sleeve and an upper upright. The upper upright has an upper thread and a lower thread. The lower thread is threaded to the lower sleeve, and the upper thread of the upper upright is used to connect to the lower end of the stair support upright.

[0006] The lower embedded positioning support includes an embedded upright and a bottom support frame. The bottom support frame is fixed to the lower end of the embedded upright, and the upper end of the embedded upright is threaded to the sleeve.

[0007] With this structure, the upper telescopic support is used to support the stair support uprights. The telescopic movement is achieved through the threaded connection of the sleeve, which facilitates the subsequent disassembly of the stair support uprights. The lower pre-embedded positioning support is fixed with concrete to achieve strict limiting fixation. In the future, the support can be disassembled simply by cutting off the upper part of the pre-embedded upright exposed on the floor slab, thus avoiding damage to the floor slab. The pre-embedded uprights are made of threaded steel bars.

[0008] As a further improvement of this utility model, the upper and lower threads of the upper section upright are spaced apart, and a support crossbar is fixedly installed at the spaced interval in a cross orientation. A limiting upright is fixedly installed at the outer end of the support crossbar, and the limiting upright is used to extend into the lower end of the stair support upright between the upper section upright and the limiting upright.

[0009] With this structure, the supporting crossbar easily supports the stair support uprights, and the limiting upright helps prevent bending at the connection between the stair support upright and the upper upright. The upper upright is made of threaded steel bar, and the stair support upright is a steel pipe with internal threads at the lower end for connection with the upper upright.

[0010] As a further improvement of this utility model, the bottom support frame is cross-shaped.

[0011] With this structure, the cross-shaped bottom support frame is more stable after placement.

[0012] As a further improvement of this utility model, the bottom support frame is placed on the base plate of the surface layer template that can be removed; fine stone concrete surface layer is poured in the surface layer template.

[0013] With this structure, the fine aggregate concrete surface layer can be poured to improve the water-proof performance of the floor slab.

[0014] As a further improvement of this utility model, a steel mesh is pre-embedded in the surface layer template, and the steel mesh abuts against the inner wall of the surface layer template.

[0015] With this structure, the steel mesh separates the internal space of the surface layer formwork that does not need to be removed, and the mesh allows the upper telescopic supports to pass through.

[0016] As a further improvement of this utility model, a concrete pad is placed between the support frame and the steel mesh. The upper side of the concrete pad has a concave surface to accommodate the longitudinal and transverse steel bars of the steel mesh. The concrete pad has a stepped portion that abuts against the end face of the support frame. The concrete pad is tied to the longitudinal and transverse steel bars of the steel mesh with tie wire.

[0017] With this structure, the stepped section helps to limit the position of the support frame and prevent it from shifting during the concrete pouring process. After the wire is tied, the steel mesh is used to achieve stable positioning of the support frame.

[0018] As a further improvement of this utility model, holes are made in the concrete pad to allow tie wires to pass through.

[0019] This structure, with holes for binding wires, prevents the binding wires from slipping off the concrete pad.

[0020] As a further improvement of this utility model, the concrete pad is divided into two types: one high and one low.

[0021] With this structure, concrete spacers of varying heights are used depending on the different heights of the longitudinal and transverse reinforcing bars in the steel mesh.

[0022] This invention, while retaining the strict limitation of the stair support uprights achieved by pouring concrete, also facilitates the reuse of the stair support, thus avoiding damage to the stair support and floor surface during demolding. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0024] Figure 2 A schematic diagram of the structure for the pre-embedded positioning support at the bottom.

[0025] Figure 3 This is a schematic diagram of the upper retractable support structure.

[0026] Figure 4 This is a structural diagram for installing a staircase support.

[0027] Figure 5 A schematic diagram of the structure for pouring fine aggregate concrete surface layer.

[0028] Figure 6 A schematic diagram of the structure for installing steel mesh.

[0029] Figure 7 For high-strength concrete pads.

[0030] Figure 8 For low-grade concrete pad blocks.

[0031] Attached reference numerals: 1. Upper telescopic support; 2. Lower embedded positioning support; 3. Limiting upright; 4. Supporting crossbar; 5. Lower sleeve; 6. Embedded upright; 7. Bottom support frame; 8. Upper upright; 9. Staircase support upright; 10. Surface layer formwork that does not need to be removed; 11. Fine aggregate concrete surface layer; 12. Steel mesh;

[0032] 13. Concrete pad; 1301. Concave surface; 1302. Stepped section; 1303. Hole;

[0033] 14. Tie wire. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Example 1

[0037] like Figures 1-8 As shown, a detachable staircase support bottom support device includes:

[0038] The upper telescopic support 1 includes a lower sleeve 5 and an upper upright 8. The upper upright 8 has an upper thread and a lower thread. The lower thread is threaded to the lower sleeve 5, and the upper thread of the upper upright 8 is used to connect to the lower end of the stair support upright 9.

[0039] The lower pre-embedded positioning support 2 includes a pre-embedded upright 6 and a bottom support frame 7. The bottom support frame 7 is fixed to the lower end of the pre-embedded upright 6, and the upper end of the pre-embedded upright 6 is threadedly connected to the sleeve 5.

[0040] With this structure, the upper telescopic support 1 is used to support the stair support upright 9. The telescopic movement is achieved through the threaded connection of the sleeve 5, which facilitates the subsequent disassembly of the stair support upright 9. The lower pre-embedded positioning support 2 is fixed with concrete to achieve strict limiting fixation. In the future, the support can be disassembled simply by cutting off the upper part of the pre-embedded upright 6 exposed on the floor slab surface, thereby avoiding damage to the floor slab surface. The pre-embedded upright 6 is made of threaded steel bars.

[0041] In this embodiment, the upper and lower threads of the upper section upright 8 are spaced apart, and a support crossbar 4 is fixedly installed at the space in a cross orientation. A limiting upright 3 is fixedly installed at the outer end of the support crossbar 4. The limiting upright 3 is used to extend into the lower end of the stair support upright 9 between the upper section upright 8 and the limiting upright 3.

[0042] With this structure, the supporting crossbar 4 can easily support the stair support upright 9, and the limiting upright 3 helps prevent bending at the connection between the stair support upright 9 and the upper upright 8. The upper upright 8 is made of threaded steel bar, and the stair support upright 9 is a steel pipe with internal threads at the lower end, thus connecting with the upper upright 8.

[0043] In this embodiment, the bottom support frame 7 is cross-shaped.

[0044] With this structure, the cross-shaped bottom support frame 7 is more stable after placement.

[0045] In this embodiment, the bottom support frame 7 is placed on the bottom plate of the surface layer template 10; fine stone concrete surface layer 11 is poured in the surface layer template 10.

[0046] With this structure, the fine stone concrete surface layer 11 will help improve the anti-seepage performance of the floor slab after pouring.

[0047] In this embodiment, a steel mesh 12 is pre-embedded in the surface layer template 10, and the steel mesh 12 abuts against the inner sidewall of the surface layer template 10.

[0048] With this structure, the steel mesh 12 divides the internal space of the surface layer formwork 10, and the mesh allows the upper telescopic support to pass through.

[0049] In this embodiment, a concrete pad 13 is placed between the support frame 7 and the steel mesh 12. The upper side of the concrete pad 13 has a concave surface 1301 to accommodate the longitudinal and transverse steel bars of the steel mesh 12. The concrete pad 13 has a stepped portion 1302 that abuts against the end face of the support frame 7. The concrete pad 13 is tied to the longitudinal and transverse steel bars of the steel mesh 12 by tie wire 14.

[0050] With this structure, the stepped part 1302 helps to limit the support frame 7 and prevent it from shifting during the concrete pouring process. After the tie wire 14 is tied, the support frame 7 is stably limited by the steel mesh 12.

[0051] In this embodiment, holes 1303 are made in the concrete pad 13 to allow the binding wire 14 to pass through.

[0052] With this structure, holes 1303 are made for binding wire 14, which can prevent the binding wire 14 from slipping off the concrete pad.

[0053] In this embodiment, the concrete pad 13 is divided into two types: one high and one low.

[0054] With this structure, concrete blocks 13 of different heights are used depending on the different heights of the longitudinal and transverse reinforcing bars of the steel mesh 12.

[0055] This embodiment has the following effects.

[0056] 1. The upper telescopic support is combined and reusable, which avoids the stair support uprights from falling directly onto the floor slab and being poured with concrete. This allows the lower pre-embedded positioning support to be placed directly on the floor slab and poured with concrete in one go, ensuring stable positioning.

[0057] 2. Using on-site steel scrap and sleeves together saves materials, improves utilization, reduces the accumulation of waste on the construction site, and helps reduce safety hazards.

[0058] 3. The upper telescopic support locks the stair support uprights, preventing the stair support uprights from swinging or tilting.

[0059] 4. If the stair support uprights are directly placed on the floor slab and poured together with the concrete, the disc-lock support uprights will be scrapped, and the steel pipe uprights will be cut to a shorter length, resulting in material waste. However, this embodiment makes full use of the on-site steel scrap, and the lower pre-embedded positioning support is placed directly inside the concrete without being removed. The upper part is removed and reused, which is economical.

[0060] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various equivalent substitutions or obvious modifications can be made without departing from the concept of the present invention, and all such modifications, achieving the same performance or purpose, should be considered within the protection scope of the present invention.

Claims

1. A detachable bottom support device for a stair j ack, characterized in that include: The upper telescopic support (1) includes a lower sleeve (5) and an upper upright (8). The upper upright (8) has an upper thread and a lower thread. The lower thread is threaded to the lower sleeve (5), and the upper thread of the upper upright (8) is used to connect to the lower end of the stair support upright (9). The lower pre-embedded positioning support (2) includes a pre-embedded upright (6) and a bottom support frame (7). The bottom support frame (7) is fixed to the lower end of the pre-embedded upright (6), and the upper end of the pre-embedded upright (6) is threaded to the sleeve (5).

2. The detachable stair support bottom support device according to claim 1, wherein The upper and lower threads of the upper section upright (8) are spaced apart, and a support crossbar (4) is fixedly installed at the space in a cross orientation. A limiting upright (3) is fixedly installed at the outer end of the support crossbar (4). The limiting upright (3) and the upper section upright (8) are used to extend into the lower end of the stair support upright (9).

3. The detachable staircase support bottom support device according to claim 1, characterized in that... The bottom support frame (7) is cross-shaped.

4. The detachable stair support bottom support device according to claim 1, wherein The bottom support frame (7) is placed on the bottom plate of the surface layer template (10); fine stone concrete surface layer (11) is poured in the surface layer template (10).

5. The detachable stair support bottom support device according to claim 4, wherein The surface layer template (10) is pre-embedded with steel mesh (12), and the steel mesh (12) abuts against the inner wall of the surface layer template (10).

6. The detachable stair support bottom support device according to claim 5, wherein A concrete pad (13) is placed between the support frame (7) and the steel mesh (12). The upper side of the concrete pad (13) has a concave surface (1301) to accommodate the longitudinal and transverse steel bars of the steel mesh (12). The concrete pad (13) has a stepped portion (1302) that abuts against the end face of the support frame (7). The concrete pad (13) is tied to the longitudinal and transverse steel bars of the steel mesh (12) by tie wire (14).

7. The detachable stair support bottom support device according to claim 6, wherein Holes (1303) are made in the concrete pad (13) for the binding wire (14) to pass through.

8. The detachable stair support bottom support device of claim 6, wherein The concrete pads (13) are divided into two types: one high and one low.

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