A hollow grouting anchor

Abstract

The utility model discloses a hollow grouting anchorage device, concretely relates to grouting anchoring technical field, including anchorage device body, inflatable bag, non -return valve, first burst valve and second burst valve, and anchorage device body has grouting runner, and grouting runner one end is closed, and the other end has grouting mouth, and grouting mouth is used for connecting with grouting equipment, and first burst valve and second burst valve all set up on anchorage device body, and first burst valve is close to the closed end of grouting runner, and second burst valve is close to grouting mouth, and inflatable bag fixedly covers and sets in the outside of anchorage device body, and inflatable bag is communicated with grouting runner through inflation pipe, and check valve is set up on inflation pipe, and non -return valve is set up in grouting runner, and non -return valve and inflatable bag all are located between first burst valve and second burst valve, and the burst pressure of first burst valve is less than the burst pressure of second burst valve. The utility model can avoid that the material is wasted, grouting pipe is blocked up by anchoring agent backflow, and the supporting performance of anchor cable is improved.

Images