Stair inclined formwork bottom disassembly support system

Abstract

A non-removable support system for the bottom of a staircase inclined formwork includes several vertical support rods arranged side-by-side between the upper and lower inclined formwork. The vertical support rods are hollow, and reinforcing rods connect the lower and upper parts of each rod. A T-shaped bracket is provided at the lower end of each vertical support rod. The T-shaped bracket includes a main body, a horizontal support rod vertically connected to the upper part of the main body, and a support rod vertically connected to the lower end of the main body. The upper end of the main body fits into the lower end of the vertical support rod, the horizontal support rod supports the surface of the lower end of the vertical support rod, and the support rod provides lateral support to the surface of the lower inclined formwork. The length of the main body between the horizontal support rod and the support rod is the same as the thickness of the concrete pouring for the staircase. This invention allows the vertical support rods to be lifted upwards after the staircase is poured, with the T-shaped bracket pre-installed inside the staircase concrete. This avoids the problem of leaving holes in the concrete or even requiring cutting to remove the vertical support rods when they are removed, thus improving construction efficiency and ensuring the construction quality of the staircase.

Description

Technical Field

[0001] This utility model relates to the field of building construction, and in particular to a bottom support system for inclined formwork of stairs that does not require dismantling. Background Technology

[0002] In building construction, concrete pouring is often used to create structures of specific shapes. Before pouring, a formwork system with corresponding cavities needs to be erected. When constructing staircases with large spans and an incline, appropriate inclined formwork is required. Supports must be used to stabilize the inclined formwork and ensure its stability. This ensures the support system can withstand the impact and pressure of the concrete during pouring, preventing collapse and potential safety accidents. Currently, the support system primarily uses vertical columns, with their lower ends resting on the inclined formwork. This results in the lower ends of the columns becoming embedded in the concrete after pouring and curing. Subsequent removal leaves holes that require repair, and in some cases, the columns cannot be removed, necessitating cutting. This negatively impacts construction quality and efficiency and requires improvement. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes a bottom support system for inclined stair formwork that does not require dismantling.

[0004] The technical solution of this utility model is: a bottom support system for inclined formwork of stairs that does not require disassembly, including several vertical support rods arranged side by side between the upper and lower inclined formworks, with several disc buckles evenly spaced on the vertical support rods. The vertical support rods are hollow rods, and reinforcing rods are connected between the lower and upper parts of the vertical support rods. The reinforcing rods are fixedly connected to the vertical support rods by cross-locking buckles. The lower end of the vertical support rod is provided with a T-shaped bracket, which includes a main rod body, a horizontal support rod vertically connected to the upper part of the main rod body, and a support rod vertically connected to the lower end of the main rod body. The main rod body, the horizontal support rod, and the support rod are all made of threaded steel. The upper end of the main rod body is fitted into the lower end of the vertical support rod, the horizontal support rod is supported on the surface of the lower end of the vertical support rod, and the support rod is horizontally supported on the surface of the lower inclined formwork. To ensure the stability of the support rod on the surface of the inclined formwork and avoid sliding displacement, the length of the main rod body between the horizontal support rod and the support rod is the same as the thickness of the concrete pouring of the stairs.

[0005] Preferably, the bottom of the support rod is provided with a plurality of inclined grooves along the length direction of the support rod, the inclined grooves are spaced at the same distance, and the inclined grooves form an anti-slip texture structure.

[0006] Preferably, a limiting nail is vertically driven into the inclined template below the support rod, with the nail head higher than the upper surface of the support rod, thereby blocking the support rod on the inclined template.

[0007] Preferably, at least three limiting pins are provided and evenly arranged to support the support rod. The middle limiting pin corresponds to the main rod body, and the other two limiting pins are symmetrically arranged at both ends of the support rod.

[0008] Preferably, the lower inclined template has several stepped plates at equal intervals along its length in the middle, and the length direction of the stepped plates is consistent with the width direction of the inclined template.

[0009] Preferably, the bottom surface of the step plate has a square notch in the middle, and an auxiliary plate is inserted between the square notches of the step plate. The auxiliary plate can be a thin template. The surface of the auxiliary plate is in contact with the surface of the inclined template. At the end of the step plate, there is a positioning nail that passes through the auxiliary plate and is nailed into the lower inclined template.

[0010] Preferably, the platform templates at both ends of the lower inclined template are provided with auxiliary support rods. The size of the auxiliary support rods is the same as that of the vertical support rods, and the end of the reinforcing rod extends to the auxiliary support rods and is fixedly connected to them.

[0011] The beneficial technical effects of this utility model are as follows: A T-shaped bracket is fitted at the lower end of the vertical support rod to support it. Anti-slip grooves are provided at the bottom of the T-shaped bracket, and positioning nails are installed on the inclined template for reinforcement and fixation. After the staircase is poured, the vertical support rod can be lifted upwards. The T-shaped bracket is pre-installed inside the staircase concrete, avoiding the phenomenon of leaving holes in the concrete or even being unable to pull out the vertical support rod and requiring cutting when removing it. This improves construction efficiency and ensures the construction quality of the staircase. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0013] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0014] Figure 3 This is a side view of the structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram showing the connection between the vertical support rod and the T-shaped bracket.

[0017] In the diagram, 1. Inclined template, 11. Step plate, 111. Square notch, 12. Auxiliary plate, 13. Positioning nail, 2. Vertical support rod, 3. Reinforcing rod, 4. Auxiliary support rod, 5. T-shaped bracket, 51. Main rod, 52. Horizontal support rod, 53. Support rod, 531. Inclined groove, 6. Limiting nail, 7. Platform template. Detailed Implementation

[0018] Example 1, see appendix Figure 1-2 4-5, a bottom support system for inclined formwork of stairs that does not require dismantling, comprising several vertical support rods 2 arranged side by side between the upper inclined formwork 1 and the lower inclined formwork. The vertical support rods are hollow rods. The lower and upper parts of each vertical support rod 2 are connected by reinforcing rods 3, which fix the vertical support rods 2 together to form a support system. The lower end of each vertical support rod 2 is provided with a T-shaped bracket 5, which supports the inclined formwork 1 and the vertical support rods 2. The T-shaped bracket 5 includes a main rod body 51, a horizontal support rod 52 vertically connected to the upper part of the main rod body 51, and a vertically connected... The support rod 53 is located at the lower end of the main rod 51. The upper end of the main rod 51 is inserted into the lower end of the vertical support rod 2 to achieve vertical connection between the two. The horizontal support rod 52 is supported on the surface of the lower end of the vertical support rod 2. The support rod 53 is horizontally supported on the surface of the lower inclined template 1. The length of the main rod 51 between the horizontal support rod 52 and the support rod 53 is the same as the thickness of the concrete pouring of the staircase, so that the surface of the inclined staircase after the concrete pouring is basically flush with the horizontal support rod 52, avoiding contact between the vertical support rod 2 above the horizontal support rod and the concrete.

[0019] The bottom of the support rod 53 is provided with several inclined grooves 531 along the length of the support rod 53. The inclined grooves form an anti-slip texture structure. The anti-slip texture structure can generate a large friction force between the support rod 53 and the inclined template 1, thereby reducing the sliding force of the T-shaped bracket 5 on the surface of the inclined template 1.

[0020] Limiting nails 6 are vertically driven into the inclined template 1 below the support rod 53. The limiting nails must have sufficient driving depth to generate sufficient supporting force. The limiting nails 6 block the support rod 53 on the inclined template 1. At least three limiting nails 6 are set and evenly distributed to support the support rod 53. The combined force of these limiting nails 6 is used to firmly support the support rod 53 and prevent it from sliding downward.

[0021] Auxiliary support rods 4 are provided on the platform templates 7 at both ends of the lower inclined template 1. The end of the reinforcing rod 3 extends to the auxiliary support rod 4 and is fixedly connected to it. The auxiliary support rod 4 is vertically supported on the platform template 7 and has high stability. The auxiliary support rod 4 can play the role of assisting in supporting the vertical support rod 2 through the reinforcing rod 3, further improving its stability on the inclined template 1.

[0022] In this embodiment, the support system uses a T-shaped bracket 5 to support the vertical support rod 2, so that the lower end of the vertical support rod 2 is above the concrete surface of the staircase. Anti-slip grooves 531 are set at the bottom of the T-shaped bracket 5, and positioning nails 13 are set on the inclined formwork 1 for reinforcement and fixation. After the concrete in the inclined formwork 1 is poured and cured, the T-shaped bracket 5 is embedded in the concrete and is not removed. After removing the reinforcing rod 3, the vertical support rod 2 is released and can be lifted upward to detach it from the T-shaped bracket 5. This avoids the phenomenon that removing the vertical support rod 2 will leave holes in the concrete or even make it impossible to pull out and require cutting. This helps to improve construction efficiency and ensure the construction quality of the staircase.

[0023] Example 2, see appendix Figure 1 , 3 This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that: the middle part of the lower inclined formwork 1 is provided with several step plates 11 at equal intervals along its length. During the subsequent construction process after the inclined formwork 1 is completed, workers need to walk on the inclined formwork 1 to carry materials. The large span of the inclined formwork 1 will lead to poor walking stability. Therefore, workers will hold onto the vertical support rods 2 to walk upward, which will affect the stability of the support system. The step plates 11 temporarily form walking steps, eliminating the need to hold onto the columns of the support system, thus ensuring the safety and stability of the support system. The bottom surface of the step plate 11 is provided with a square notch 111. An auxiliary plate 12 is inserted between the square notches 111 of the step plate 11. At the end of the step plate 11, there is a positioning nail 13 that passes through the auxiliary plate 12 and is driven into the lower inclined formwork 1. The auxiliary plate 12 is used to assist in the support between the step plate 11 and the inclined formwork 1, avoiding damage to the inclined formwork 1 caused by the force of step plates 11 being stepped on.

Claims

1. A bottom support system for inclined staircase formwork that does not require removal, characterized in that: It includes several vertical support rods arranged side by side between the upper and lower inclined formwork. The vertical support rods are hollow rods, and the lower and upper parts of the vertical support rods are connected by reinforcing rods. The lower end of the vertical support rod is equipped with a T-shaped bracket. The T-shaped bracket includes a main rod body, a horizontal support rod vertically connected to the upper part of the main rod body, and a support rod vertically connected to the lower end of the main rod body. The upper end of the main rod body is fitted into the lower end of the vertical support rod. The horizontal support rod is supported on the surface of the lower end of the vertical support rod. The support rod is horizontally supported on the surface of the lower inclined formwork. The length of the main rod body between the horizontal support rod and the support rod is the same as the thickness of the concrete pouring of the staircase.

2. The bottom support system for inclined stair formwork that does not require removal, as described in claim 1, is characterized in that: The bottom of the support rod is provided with several inclined grooves along the length of the support rod, and the inclined grooves form an anti-slip texture structure.

3. The bottom support system for inclined stair formwork that does not require removal, as described in claim 2, is characterized in that: A limiting pin is vertically driven into the inclined template below the support rod, and the support rod is blocked on the inclined template by the limiting pin.

4. The bottom support system for inclined stair formwork that does not require removal, as described in claim 3, is characterized in that: At least three limiting pins are provided and evenly arranged to support the support rod.

5. The bottom support system for inclined stair formwork that does not require removal according to claim 1, characterized in that: The lower inclined template has several stepped plates at equal intervals along its length in the middle.

6. The bottom support system for inclined stair formwork that does not require removal, as described in claim 5, is characterized in that: The bottom surface of the step plate has a square notch in the middle, and an auxiliary plate is inserted between the square notches of the step plate. At the end of the step plate, there is a positioning nail that passes through the auxiliary plate and is nailed into the lower inclined template.

7. The bottom support system for inclined stair formwork that does not require removal according to claim 1, characterized in that: The platform templates at both ends of the lower inclined template are provided with auxiliary support rods, and the ends of the reinforcing rods extend to the auxiliary support rods and are fixedly connected to them.

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