Simple prefabricated stair grouting hole turnover protection device

Abstract

A simple prefabricated stair grouting hole turnover protection device comprises a cast-in-place platform plate, an anchor head, a prefabricated bolt and a bolt sleeve, a prefabricated stair is located above one side of the cast-in-place platform plate, the anchor head used for fixed connection is reserved in the cast-in-place platform plate, and the upper end of the anchor head is fixedly connected with the prefabricated bolt; one end of the prefabricated bolt is inserted into a grouting hole of the prefabricated stair, the top of the prefabricated bolt is sleeved with a bolt sleeve, a gasket is fixed to the top of the bolt sleeve, and the top of the gasket is movably connected with a pull ring. The device can effectively prevent construction waste such as rainwater and dust from entering the hole, corrosion of the prefabricated bolt is prevented, the later grouting quality is improved, compared with a traditional protection method, the device reduces the later manual hole cleaning difficulty, the hole cleaning workload is greatly reduced, the construction efficiency is improved, the device has the characteristic of being capable of being turned over, and the construction cost is reduced. And the material loss is less, so that the consumption of disposable materials is reduced, and the construction cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to prefabricated stair technology field especially, it relates to a simple prefabricated stair grouting hole turnover protection device. BACKGROUND

[0002] With the sustained development of the construction industry and the continuous progress of construction technology, prefabricated components are increasingly widely used in construction, especially prefabricated stairs as a common building component, with its fast construction speed, quality controllable and other advantages are favored. However, in the production and installation process of prefabricated stairs, the protection of grouting hole is always a problem.

[0003] To ensure the firm connection between prefabricated stairs and cast-in-place platform, anchor bolts are reserved in the construction of cast-in-place platform plate, these anchor bolts pass through the grouting hole reserved in prefabricated stairs, and then the connection between prefabricated stairs and cast-in-place platform plate is strengthened by grouting construction.

[0004] Because the grouting hole needs to be kept open before grouting, the construction environment, dust, rainwater and other factors often cause water accumulation in the grouting hole, so that construction waste invades, increases the difficulty of post-cleaning, and also may pollute the anchor bolt, affecting the quality of the anchor bolt. The garbage in the hole is difficult to clean thoroughly, which will affect the quality of the later grouting, and even may cause safety hazards such as exposed rust of the anchor bolt.

[0005] In order to protect the construction quality of the later grouting hole and reduce the cost of cleaning the grouting hole for construction personnel, the present application provides a simple and reusable prefabricated stair grouting hole protection device. SUMMARY

[0006] The utility model aims at solving the insufficient prior art, and provides a simple prefabricated stair grouting hole turnover protection device, which can solve the problem that garbage in the hole is difficult to clean up, affecting the quality of later grouting.

[0007] The utility model discloses a technical scheme that achieves the above-mentioned purpose:

[0008] A simple prefabricated stair grouting hole turnover protection device, comprising a cast-in-place platform plate, an anchor head, a prefabricated bolt and a bolt sleeve, the prefabricated stair is located above one side of the cast-in-place platform plate, the cast-in-place platform plate has an anchor head reserved inside for fixed connection, the upper end of the anchor head is fixedly connected with the prefabricated bolt, one end of the prefabricated bolt is inserted into the grouting hole of the prefabricated stair, the top of the prefabricated bolt is sleeved with the bolt sleeve, the top of the bolt sleeve is fixed with a gasket, and the top of the gasket is movably connected with a pull ring.

[0009] The gasket edge is provided with an arc-shaped groove, and the pull ring is located in the arc-shaped groove of the gasket when it is in a flat state.

[0010] The pull ring is rotatably connected to the gasket by a pin.

[0011] The diameter of the gasket is greater than the diameter of the grouting hole.

[0012] The utility model discloses a simple prefabricated stair grouting hole reusable protection device, which can effectively prevent rainwater, dust and other construction wastes from entering the hole, prevent the rust of the prefabricated bolt, improve the post-grouting quality, and has the advantages of reducing the post-artificial hole cleaning difficulty, greatly reducing the hole cleaning workload, improving the construction efficiency, having the reusable characteristics, reducing the consumption of disposable materials, and reducing the construction cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is an application schematic diagram of the utility model;

[0015] Figure 3 It is a top view of the utility model;

[0016] Figure 4 It is Figure 3 It is a sectional view in the direction of A-A;

[0017] Figure 5 It is Figure 3 It is a sectional view in the direction of B-B (after rotation);

[0018] In the figure, 1 is a grouting hole; 2 is an anchor head; 3 is a prefabricated bolt; 4 is a cast-in-place platform plate; 5 is a prefabricated stair; 6 is a gasket; 7 is a bolt sleeve; 8 is a pull ring; and 9 is a pin.

[0019] The utility model will be described in detail below with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0020] The utility model will be described in detail below with reference to the embodiments and the accompanying drawings.

[0021] A simple prefabricated stair grouting hole reusable protection device, which comprises a cast-in-place platform plate 4, an anchor head 2, a prefabricated bolt 3 and a bolt sleeve 7, the prefabricated stair 5 is located above one side of the cast-in-place platform plate 4, the anchor head 2 for fixed connection is reserved in the cast-in-place platform plate 4, the prefabricated bolt 3 is fixedly connected to the upper end of the anchor head 2, one end of the prefabricated bolt 3 is inserted into the grouting hole 1 of the prefabricated stair 5, the bolt sleeve 7 is sleeved on the top of the prefabricated bolt 3, the gasket 6 is fixed on the top of the bolt sleeve 7, and the pull ring 8 is movably connected to the top of the gasket 6.

[0022] The gasket 6 is provided with an arc-shaped groove at the edge, and the pull ring 8 is located in the arc-shaped groove of the gasket 6 when the pull ring 8 is in a flat state.

[0023] The pull ring 8 is rotatably connected to the gasket 6 via a pin 9.

[0024] The diameter of the gasket 6 is larger than the diameter of the grouting hole 1.

[0025] When this utility model is in operation, the anchor head 2 is reserved on the cast-in-place platform slab 4, and the anchor head 2 is connected to the bolt 3. The bolt 3 passes upward through the grouting hole 1 on the precast staircase 5. A protective device consisting of a gasket 6 and a bolt sleeve 7 is connected to the precast bolt 3. The gasket 6 at the top of the bolt sleeve 7 covers the grouting hole 1 and protects the grouting hole 1. Then, a pull ring 8 is set on the gasket (6). The pull ring 8 and the gasket 6 are connected by a pin 9 to facilitate easy removal and turnover.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A simple, reusable protective device for grouting holes in precast stairs, characterized in that, The precast staircase (5) is located above one side of the cast-in-place platform slab (4). Anchor heads (2), precast bolts (3), and bolt sleeves (7) are provided inside the cast-in-place platform slab (4). Anchor heads (2) for fixed connection are reserved inside the cast-in-place platform slab (4). Precast bolts (3) are fixedly connected to the upper end of the anchor heads (2). One end of the precast bolts (3) is inserted into the grouting hole (1) of the precast staircase (5). Bolt sleeves (7) are sleeved on the top of the precast bolts (3). A gasket (6) is fixed on the top of the bolt sleeves (7). A pull ring (8) is movably connected to the top of the gasket (6).

2. The simple precast staircase grouting hole reusable protection device according to claim 1, characterized in that, The gasket (6) has an arc-shaped groove on its edge, and the pull ring (8) is located in the arc-shaped groove of the gasket (6) when it is in a flat position.

3. A simple, reusable protective device for grouting holes in precast stairs according to claim 2, characterized in that, The pull ring (8) is rotatably connected to the gasket (6) by a pin (9).

4. A simple, reusable protective device for grouting holes in precast stairs according to claim 3, characterized in that, The diameter of the gasket (6) is larger than the diameter of the grouting hole (1).

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