Downhole full-bore infinite sliding-pin slide bushing switch

The invention discloses a downhole full-bore infinite sliding-pin slide bushing switch and solves the problems of inconvenience in maintenance and the like due to the fact that the conventional fracturing slide bushing needs to be wholly lowered into downhole. The downhole full-bore infinite sliding-pin slide bushing switch specifically comprises a main slide bushing body and a tenon block mechanism, wherein the tenon block mechanism comprises a tenon block recognition mechanism and a tenon block switch mechanism, during use, the main slide bushing body is lowered into the downhole, and the tenon block mechanism is lowered for recognizing a fracture layer when a fracture channel needs to be opened or closed. The slide bushing switch has high recognition degree for different fracture layers, parts are convenient and simple to replace and maintain, and the working stability and accuracy are enhanced greatly. 本发明公开了种井下全通径无限级滑销滑套开关，解决了现有压裂滑套需整体下入井下不方便维修保养等问题。具体包括滑套主体及隼块机构，所述隼块机构包括隼块识别机构及隼块开关机构，使用时，滑套主体下入井中，需要压裂通道