Water stop ring with split type hinge rubber ring

Abstract

The invention relates to a water stop ring with a split type hinge rubber ring. The water stop ring comprises an embedded steel ring plate, which is arranged at the opening of a well hole in a surrounding mode and is fixedly arranged on a well lining wall; a rubber water stop ring and a steel pressing ring are arranged in sequence on the side, away from the well lining wall, of the embedded steel ring plate; a plurality of hinge pressing plates are arranged on the outer side of the steel pressing ring in the surrounding mode; the hinge pressing plates comprise first hinges which are fixedly connected with the steel pressing ring and second hinges which extend into the opening of the well hole; the embedded steel ring plate, the rubber water stop ring, the steel pressing ring and the hinge pressing plates are fixedly connected through bolts; an air bag which is located between the inner wall of the well hole and the inner wall of the rubber water stop ring is detachably installed on the rubber water stop ring; and hinge inserting grooves are formed inwards in the outer wall of the rubber water stop ring; the ends of the second hinges are folded inwards around the rotating end towards the opening of the well hole and are inserted into the hinge inserting grooves; and the ends of the second hinges are fixed inside the hinge inserting grooves so as to tightly press the outer surface of the rubber water stop ring to the outer wall of a jacking pipe.

Description

【Technical field】 [0001] The invention relates to the technical field of pipe jacking construction, in particular to a water stop ring with a split 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 prev...

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 continuous friction between the outer wall of the jacking pipe and the end of the hinge pressing plate, the hinge pressing plate wears out, and the wear degree of the hinge pressing plate and the jacking pipe is different, so it needs to be replaced irregularly, which greatly reduces the work efficiency, and the friction between the hinge pressing plate and the outer wall of the jacking pipe Large resistance is not conducive to pipe jacking construction

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