PIPE ELEVATOR FOR GRP PUMP AND COMPRESSOR PIPES Russian patent published in 2008 - IPC E21B19/06 

FIELD: mining.

SUBSTANCE: pipe elevator with female and male ends contains a bush housing with an eye ring, an interchangeable clamping tool with half-jaws hinged on the end of a retractable rod; the jaws can be opened in the position beyond the bush housing and can be closed in the position inside the housing. The locking device consists of a rotary handle with a spring-loaded retainer and a lever. The base of the handle is rigidly connected with the bush mounted in such a way as to enable to lock the retractable rod located inside the bush. Not hinged ends of half-jaws are overlapped and fixed by means of a conical precision quick release bolt fitted with a non-losable nut. The internal working surface of half-jaws fits the profile of the female end of the GRP pump and compressor pipe. The exposed surface is mated with the internal opening of the bush housing with a radial gap that provides the release of the pipe elevator of the GRP pump and compressor pipe after removal of the conical precision quick release bolt.

EFFECT: possibility of operation with GRP pump and compressor pipes is provided.

5 dwg