Water stop ring with integrated hinge rubber ring

Abstract

The invention relates to a water stop ring with an integrated hinge rubber ring. The water stop ring comprises an embedded steel ring plate which is arranged at an opening of a well hole in a surrounding mode and fixedly arranged on a lining wall in a well, and a rubber water stop ring and a steel pressing ring are sequentially arranged on the side, away from the lining wall in the well, of the embedded steel ring plate; the embedded steel ring plate, the rubber water stop ring and the steel pressing ring are fixedly connected through bolts; the rubber water stop ring wraps the peripheries of a plurality of hinge pressing plates, and each hinge pressing plate comprises a first hinge and a second hinge rotationally connected with the first hinge through a rotating end; the first hinges are arranged at the upper end of the rubber water stop ring, and the bolts penetrate through the steel pressing ring, the rubber water stop ring, the first hinges in the rubber water stop ring and the embedded steel ring plate to be fixed; and the second hinges are arranged at the lower end of the rubber water stop ring, the second hinges in the lower end of the rubber water stop ring are folded towards the interior of the opening of the well hole around the rotating ends and the lower end of the rubber water stop ring together, the outer wall of the rubber water stop ring abuts against the outer wall of a jacking pipe, and the second hinges are fixed to the lower end of the rubber water stop ring.

Description

【Technical field】 [0001] The invention relates to the technical field of pipe jacking construction, in particular to a water stop ring with an integral hinge rubber ring. 【Background technique】 [0002] In the pipe jacking project, in order to ensure that the pipe can enter and leave the hole smoothly from the working well, the opening of the working well is generally slightly larger than the outer diameter of the pipe joint. Effective measures must be taken to seal the gap during jacking, otherwise groundwater and mud sand will It will flow into the working well from the gap, which will cause the subsidence of the upper surface of the hole, and even cause an accident. Therefore, the water stop at the hole is a link that cannot be ignored in the process of pipe jacking. The water stop at the entrance of the hole is generally to install a rubber flange water stop at the hole, but there are still problems with the unsatisfactory water stop effect, especially the inability to ...

AI Technical Summary

Problems solved by technology

The water stop at the entrance of the hole is generally to install a rubber flange water stop at the hole, but there are still problems with the unsatisfactory water stop effect, especially the inability to prevent groundwater, mud sand and thixotropic mud from flowing from the gap between the pipe joint and the water stop ring to the work area. well

[0003] During the jacking process of the pipe jacking from the entrance of the hole, due to the continuous friction between the outer wall of the pipe jacking and the water-stop rubber ring, the water-stop rubber ring is likely to be deformed, resulting in a gap between the water-stop rubber ring and the outer wall of the pipe jacking, which cannot guarantee good performance. Especially in the case of shallow groundwater and a lot of water seepage on the surface, the water leakage is serious and it is difficult to ensure construction safety. The rubber water stop ring is not only difficult to replace but also greatly reduces the efficiency of pipe jacking construction.

[0004] Due to the different degrees of corrosion and damage of the exposed metal hinge pressure plate, the hinge pressure plate needs to be replaced irregularly and irregularly, and the outer wall of the jacking pipe and the end of the hinge pressure plate are constantly rubbed so that the hinge pressure plate wears out, and it also needs to be replaced irregularly and irregularly. Reduce work efficiency, and the frictional resistance between the hinge plate and the outer wall of the pipe jacking is large, which is not conducive to pipe jacking construction

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