A one-piece stair form reinforcing device

Abstract

The application discloses an integrated stair formwork reinforcing device, which comprises a shell for accommodating internal components and arranged along the length direction of a stair formwork; an adjusting assembly comprising two groups of arm rods one, arm rods two pivotally connected with the arm rods one and arm rods three pivotally connected with the arm rods two, the arm rods one and the arm rods two being arranged across the width direction of the stair formwork after being unfolded, and the arm rods three being arranged perpendicularly to the surface of the stair formwork and across the thickness of the stair formwork after being unfolded; and a fixing assembly comprising a plurality of pairs of pull screws for connecting the arm rods three on the same side above or below the stair formwork; the arm rods one and the arm rods two are fixed together with the arm rods three to fix the stair formwork; and the arm rods one, the arm rods two and the arm rods three are all accommodated in the shell when the stair formwork does not need to be reinforced. The application has the advantages of simple structure, convenient operation, fast formwork reinforcing, high construction efficiency and suitability for construction of stair formworks of different sizes.

Description

Technical Field

[0001] This application belongs to the field of auxiliary equipment technology for building construction, specifically relating to a novel foldable and retractable integrated stair formwork reinforcement system, which is particularly suitable for the reinforcement construction of stair formwork in civil buildings. Background Technology

[0002] As a crucial structural element connecting different floors in a building, the construction quality of stairs directly impacts the building's safety and aesthetics. Traditional stair formwork reinforcement methods typically involve fixing the steps with wire and wooden boards, combined with tie rods or step-by-step tensioners for side formwork reinforcement. This method has the following problems:

[0003] (1) Low construction efficiency: Traditional methods require the use of a combination of various materials, the construction process is complicated, time-consuming and labor-intensive, and the technical level of construction personnel is required to be high.

[0004] (2) Material waste: During concrete pouring, some reinforcing materials (such as iron wire and steel nails) will be covered and difficult to recycle when the formwork is removed, resulting in material waste.

[0005] (3) Affects appearance quality: When the formwork is removed, the slag and material residue will damage the concrete surface and affect the overall aesthetics of the staircase.

[0006] (4) High cost: Traditional methods require a lot of manpower and material input, which increases construction costs. Summary of the Invention

[0007] This application provides an integrated stair formwork reinforcement device, which aims to solve the technical problems of how to improve construction efficiency, reduce material waste, lower costs, and ensure the appearance quality of stair concrete.

[0008] To solve at least one of the above-mentioned technical problems, the technical solution adopted in this application is:

[0009] An integrated staircase formwork reinforcement device, comprising:

[0010] The shell, used to house its internal components, is set along the length of the stair formwork;

[0011] The adjustment assembly includes two sets of arms 1 folded inside the housing and placed opposite each other, arm 2 pivotally connected to arm 1, and arm 3 pivotally connected to arm 2; when unfolded, arm 1 and arm 2 are configured to span the width direction of the stair template; when unfolded, arm 3 is configured to be perpendicular to the surface of the stair template and span the thickness of the stair template.

[0012] The fixing assembly includes several tie rods for connecting the arm three on the same side above or below the stair formwork;

[0013] The extended arm three drives arm one and arm two to fix the stair formwork together; when the stair formwork does not need to be reinforced, arm one, arm two and arm three are all housed in the housing.

[0014] Furthermore, the shell is constructed as an open through-slot structure along its length; the width of the shell is not less than the sum of the widths of the two arms folded within it.

[0015] Furthermore, each end of the housing is provided with two independently configured arms, which are pivotally connected to the housing via a pivot shaft; the maximum outward extension angle of the arms is 90°.

[0016] Furthermore, the second arm is pivotally connected to the end of the first arm away from the first arm via a second pivot; it can rotate 360° along the second pivot; the second arm can be folded inside the first arm.

[0017] Furthermore, the second arm has a through hole in its thickness direction and symmetrical elongated holes on its length side. The third arm passes through the through hole and is connected to the second arm by a rotating rod. When the third arm is not in operation, it is horizontally stored in the through hole. When the third arm is in operation, it is set perpendicular to the second arm by a rotating rod.

[0018] Furthermore, in the second arm, a straight sawtooth track is provided on one side of the elongated hole, and a sliding groove is provided on the other side of the elongated hole; one end of the rotating rod is provided with a gear that meshes with the sawtooth track, and the other end is provided with a roller that slides with the sliding groove; the third arm can adjust the total length of the extension of the first arm and the second arm in conjunction with the pull screw by the gear engaging with the sawtooth track and the roller engaging with the sliding groove.

[0019] Furthermore, the third arm is provided with an adjustment hole that cooperates with the rotating rod. The adjustment hole is located in the width direction in the middle of the third arm, and the length of the adjustment hole is greater than the thickness of the second arm.

[0020] Furthermore, mounting slots through which the tie rods pass are provided at both ends of the length plane of the third arm. Through the cooperation of the tie rods and the mounting slots, the third arm can span the thickness of the stair formwork to reinforce the stair formwork.

[0021] Furthermore, there are four sets of tie rods; each of the first arms is equipped with a second arm and a third arm.

[0022] The integrated stair formwork reinforcement device designed in this application has a simple structure, is easy to operate, and can quickly complete formwork reinforcement with high construction efficiency. The height and width of the reinforcement device are adjustable, making it suitable for stair formwork construction of different sizes and with a wide range of applications. It is reusable, avoiding the waste of materials such as wire and nails in traditional methods. It also avoids slag and material residue during formwork removal, ensuring the aesthetics of the stair concrete surface. It reduces the input of manpower and materials, and lowers construction costs. Attached Figure Description

[0023] Figure 1 This is a perspective view of the reinforcement device in this application when it is deployed;

[0024] Figure 2 This is a perspective view of the reinforcement device in this application when it is stored.

[0025] Figure 3 This is a perspective top view of the reinforcement device in this application when it is stored.

[0026] Figure 4 This is a diagram showing the state of the boom in this application when it is fully extended;

[0027] Figure 5 This is a schematic diagram of the arm 1 in this application mating with the housing;

[0028] Figure 6 This is a diagram showing the state of the second boom in this application when it is deployed;

[0029] Figure 7 This is a diagram showing the state of the boom in three deployment phases in this application;

[0030] Figure 8 This is a schematic diagram of the engagement between boom three and boom two when boom two is deployed in this application;

[0031] Figure 9 This is a perspective view of the reinforcement device used in this application for reinforcing stair formwork.

[0032] In the picture:

[0033] 10. Housing; 20. Adjustment assembly; 21. Arm 1

[0034] 22. Boom Two 23. Boom Three 24. Rotary Axle One

[0035] 25. Rotating shaft 26. Rotating rod 27. Sawtooth track

[0036] 28. Gear; 30. Fixing assembly; 31. Pull screw.

[0037] 40. Staircase formwork; 50. Scaffolding; 60. Concrete structure Detailed Implementation

[0038] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0039] This embodiment proposes an integrated stair formwork reinforcement device, such as... Figure 1 , 9 As shown, it includes a housing 10 for housing its internal components and arranged along the length of the stair formwork 40, an adjustment component 20 for adjusting the reinforcement length, and a fixing component 30 for connecting the adjustment component 20 to the stair formwork 40 as a whole.

[0040] like Figure 2-8 As shown, the adjustment assembly 20 includes two sets of arms 1 21 folded inside the housing 10 and positioned opposite each other, an arm 22 pivotally connected to arm 1 21, and an arm 3 23 pivotally connected to arm 22. Each set of arms 1 21 has two arms, and each arm 1 21 is equipped with one arm 22 and one arm 3 23. That is, the entire adjustment assembly 20 has four arms 1 21, four arms 22, and four arms 3 23. Arms 1 21 and arm 22, arm 22 and arm 3 23 are pivotally connected to each other, making them easy to fold or unfold, convenient to store, and easy to adjust their span length range. The symmetrical structure is not only simple in structure but also convenient to operate. When unfolded, arms 1 21 and arm 2 23 are positioned across the width of the stair template; arm 3 23 is perpendicular to the stair template surface and spans the thickness of the stair template, thus fixing the stair template as a whole, enabling rapid template reinforcement and high construction efficiency. The fixing component 30 includes several tie rods 31 for connecting the arm 23 on the same side above or below the stair formwork 40.

[0041] like Figure 2-3 As shown, the shell 10 is constructed with an open slot structure along its length to facilitate the storage of the adjustment component 20. Furthermore, the width of the shell 10 is not less than the sum of the widths of the two parallel arms 21 folded within it. This is to ensure that the two parallel arms 21 can be completely stored within the shell 10, improving storage safety and ease of carrying.

[0042] like Figure 4-5 As shown, each end of the housing 10 is provided with two independently set arms 21. The arms 21 are pivotally connected to the housing 10 via a pivot 24. The pivot 24 is set perpendicular to the length of the housing 10. The arms 21 can then be extended and rotated outward relative to the axis of the pivot 24. The rotation angle range is 0-90°, and the maximum rotation angle is 90°.

[0043] like Figure 6 As shown, the second arm 22 is pivotally connected to the end of the first arm 21 away from the first arm 21 via the second pivot 25, and can rotate 360° along the second pivot 25; the second arm 22 can be folded inside the first arm 21.

[0044] like Figure 7 As shown, boom 22 has a through-hole surface in its thickness direction and symmetrical elongated holes on its length side. Boom 3 23 passes through the through-hole surface and is cross-connected to boom 22 via rotating rod 26. When boom 3 23 is not in operation, it is horizontally housed within the through-hole surface; when boom 3 23 is in operation, it is set perpendicular to boom 22 via rotating rod 26.

[0045] like Figure 8 As shown, in arm two 22, a straight sawtooth track 27 is provided on one side of the elongated hole, and a sliding groove is provided on the other side of the elongated hole; one end of the rotating rod 26 is provided with a gear 28 that meshes with the sawtooth track 27, and the other end is provided with a roller that slides with the sliding groove. Arm three 23 can move along the length direction of arm two 22 through the engagement of gear 28 with sawtooth track 27 and roller with sliding groove (see figure omitted) to adjust the total extension length of arm one 21 and arm two 22 in engagement with pull screw 31.

[0046] The boom 23 is provided with an adjustment hole that cooperates with the rotating rod 26. The adjustment hole is located in the width direction in the middle of the boom 23, and the length of the adjustment hole is greater than the thickness of the boom 2. The purpose is to improve the vertical position of the boom 23 so that the tie rod 31 can be adjusted to cooperate with the thickness of the stair formwork 40.

[0047] Furthermore, mounting holes for the tie rods 31 are provided at both ends of the length plane of the third arm 23, and the ends of the tie rods 31 are fixed by nuts. Through the cooperation of the tie rods 31 and the mounting holes, the third arm 23 can span the thickness of the stair formwork 40 to reinforce the stair formwork. In this embodiment, each fixing device is provided with four sets of tie rods 31.

[0048] like Figure 9 As shown in the figure, each stair template 40 is provided with at least two fixing devices. As can be seen from the figure, the housing 10 is set along the length of the stair template 40. The stair template 40 is fixed together by the unfolded arm 3 23 driving arm 1 21 and arm 2 22. When it is not necessary to reinforce the stair template 40, arm 1 21, arm 2 22 and arm 3 23 are all stored in the housing 10.

[0049] During reinforcement, the stair formwork 40 is supported from below by scaffolding 50, with its two ends overlapping the concrete structure 60. It is secured by at least two sets of reinforcement devices to ensure it is placed securely and completely on the scaffolding 50. Once the reinforcement devices are in place, concrete can be poured to form the concrete staircase.

[0050] The staircase formwork is deployed by rotating around pivots 24 and 25, and rotating rod 26, via interconnected pivot arms 21, 22, and 23. Tie rods reinforce the formwork, ensuring proper pouring of the concrete and minimizing the need for wire and nail fixing, thus preventing slag inclusions and rust buildup during later concrete installation. This reinforcement device also maximizes the protection of the concrete surface after pouring, preventing damage to the concrete's appearance during formwork removal.

[0051] A construction method using an integrated stair formwork reinforcement device as described above, such as Figure 9 As shown, it includes the following steps:

[0052] Step 1: After completing the erection of the supporting scaffolding 50 and the support of the stair formwork 40, prepare the reinforcement device;

[0053] Step 2: Move the four arms 21 outward by 90° to make them rotate and unfold around the pivot 24;

[0054] Step 3: Move the four levers 22 outward by 180° to make them rotate and unfold around the pivot 25;

[0055] Step 4: Move all four levers 323 downwards to keep them perpendicular to lever 25;

[0056] Step 5: Control the rotation of the rotating rod 26, and adjust the horizontal position of the arm 23 according to the width of the stair formwork 40;

[0057] Step 6: Adjust the up and down position of the arm 23 according to the height of the stair formwork 40, and then tighten and fix it through the tie rod 31 to fix the stair formwork 40.

[0058] Step 7: Pour concrete to form the concrete structure of the staircase;

[0059] Step 8: Disassemble the reinforcement device and store it away to prepare for the next set of stair formwork reinforcement.

[0060] This application discloses an integrated stair formwork reinforcement device with a simple structure, convenient operation, and rapid formwork reinforcement, resulting in high construction efficiency. The height and width of the device are adjustable, making it suitable for stair formwork of different sizes and broad in applicability. It is reusable, avoiding the waste of materials such as wire and nails found in traditional methods. Furthermore, it prevents slag and material residue during formwork removal, ensuring the aesthetic appearance of the stair concrete surface. This reduces labor and material input, lowering construction costs. This application also proposes a construction method using this integrated stair formwork reinforcement device.

[0061] The embodiments of this application have been described in detail above. These descriptions are merely preferred embodiments and should not be construed as limiting the scope of this application. All equivalent variations and modifications made within the scope of this application should still fall within the patent coverage of this application.

Claims

1. An integrated staircase formwork reinforcement device, characterized in that, include: The shell, used to house its internal components, is set along the length of the stair formwork; The adjustment assembly includes two sets of arms 1 folded inside the housing and placed opposite each other, arm 2 pivotally connected to arm 1, and arm 3 pivotally connected to arm 2; when unfolded, arm 1 and arm 2 are configured to span the width direction of the stair template; when unfolded, arm 3 is configured to be perpendicular to the surface of the stair template and span the thickness of the stair template. The fixing assembly includes several tie rods for connecting the arm three on the same side above or below the stair formwork; The extended arm three drives arm one and arm two to fix the stair formwork together; when the stair formwork does not need to be reinforced, arm one, arm two and arm three are all housed in the housing.

2. The integrated stair formwork reinforcement device according to claim 1, characterized in that, The shell is constructed as an open slotted structure along its length; the width of the shell is not less than the sum of the widths of the two arms folded within it.

3. The integrated stair formwork reinforcement device according to claim 1 or 2, characterized in that, Two independently configured arms are provided at each end of the housing, and the arms are pivotally connected to the housing via a pivot shaft; the maximum outward extension angle of the arms is 90°.

4. The integrated stair formwork reinforcement device according to claim 3, characterized in that, The second arm is pivotally connected to the end of the first arm away from the first arm via a second pivot; it can rotate 360° along the second pivot; the second arm can be folded inside the first arm.

5. The integrated stair formwork reinforcement device according to claim 4, characterized in that, The second arm has a through hole in its thickness direction and symmetrical elongated holes on its length side. The third arm passes through the through hole and is connected to the second arm by a rotating rod. When the third arm is not in operation, it is horizontally stored in the through hole. When the third arm is in operation, it is set perpendicular to the second arm by a rotating rod.

6. The integrated stair formwork reinforcement device according to claim 5, characterized in that, In the second arm, a straight sawtooth track is provided on one side of the elongated hole, and a sliding groove is provided on the other side of the elongated hole; one end of the rotating rod is provided with a gear that meshes with the sawtooth track, and the other end is provided with a roller that slides with the sliding groove; the third arm can adjust the total length of the extension of the first arm and the second arm in conjunction with the pull screw by the gear engaging with the sawtooth track and the roller engaging with the sliding groove.

7. The integrated stair formwork reinforcement device according to claim 5 or 6, characterized in that, The third arm is provided with an adjustment hole that cooperates with the rotating rod. The adjustment hole is located in the width direction in the middle of the third arm, and the length of the adjustment hole is greater than the thickness of the second arm.

8. The integrated stair formwork reinforcement device according to claim 7, characterized in that, At both ends of the length plane of the third arm, there are mounting strip holes through which the tie rods pass. By cooperating with the tie rods and the mounting strip holes, the third arm can span the thickness of the stair formwork to reinforce the stair formwork.

9. An integrated stair formwork reinforcement device according to any one of claims 1-2, 4-6, and 8, characterized in that, There are four sets of tie rods; each of the first arms is equipped with a second arm and a third arm.

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