A concrete precast piece grouting stop device

Abstract

The utility model discloses a kind of grouting stop devices of concrete prefabricated part, including shield pipeline and the stop plug installed on shield pipeline, the shield pipeline includes multiple mortise and tenon cooperation pipe piece, each described pipe piece is equipped with grouting hole and overflow hole, the stop plug is installed in grouting hole, grouting hole is equipped with pre-buried pipe piece, through-hole is equipped in pre-buried pipe piece, the stop plug includes screw rod and assembly sleeve, the assembly sleeve is inserted with pre-buried pipe piece and is fixed, the inner circumference of pre-buried pipe piece is equipped with multiple limit grooves, the outer circumference of assembly sleeve is equipped with the limit plate corresponding with limit groove, the limit plate and limit groove one-to-one correspond;The grouting stop device of the concrete prefabricated part when using not only can effectively block grouting hole, and it is not easy to loosen and exit after installation, stability is strong, in addition, filling state can be quickly judged when grouting is used, improve construction efficiency, suitable for widely used.

Claims

1. A grouting stop device for precast concrete components, characterized in that, The device includes a tunnel boring machine (TBM) pipe and a stop plug installed on the TBM pipe. The TBM pipe includes multiple segments with tenon and mortise joints. Each segment has a grouting hole and an overflow hole. The stop plug is installed in the grouting hole. The grouting hole has a pre-embedded pipe fitting with a through hole. The stop plug includes a screw and a mounting sleeve. The mounting sleeve is inserted and fixed to the pre-embedded pipe fitting.

2. The grouting stop device for precast concrete components according to claim 1, characterized in that, The inner circumference of the pre-embedded pipe fitting is provided with multiple limiting grooves, and the outer circumference of the assembly sleeve is provided with a limiting plate corresponding to the limiting grooves. The limiting plate and the limiting grooves correspond one-to-one.

3. The grouting stop device for precast concrete components according to claim 2, characterized in that, The limiting plate is surrounded by a rubber sealing layer with a thickness of 1 mm.

4. The grouting stop device for precast concrete components according to claim 1, characterized in that, The outer surface of the screw is provided with a hexagonal countersunk hole, and the circumference of the screw is provided with an external thread. The inner wall of the assembly sleeve is provided with an internal thread that mates with the external thread. The screw is connected to the assembly sleeve by the thread.

5. The grouting stop device for precast concrete components according to any one of claims 1-4, characterized in that, The screw has an upper anti-loosening helical tooth below the step, and the mounting sleeve has a lower anti-loosening helical tooth on the step surface. The upper and lower anti-loosening helical teeth are arranged opposite to each other and the helical teeth mesh with each other.

6. The grouting stop device for precast concrete components according to any one of claims 1-4, characterized in that, The bottom end of the assembly sleeve is also provided with a sealing block. The sealing block is frustoconical and its maximum outer diameter is larger than the outer diameter of the assembly sleeve. A through hole is provided inside the sealing block, and the through hole is coaxially arranged with the assembly sleeve.

7. The grouting stop device for precast concrete components according to claim 6, characterized in that, The length of the pre-embedded pipe fitting is greater than that of the mounting sleeve and sealing block. When the mounting sleeve and sealing block are installed inside the pre-embedded pipe fitting, the through hole is squeezed closed.

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