Patent ID: 8104551
Filing Date: 2012-01-31
Classification: E21B,Y10T

Abstract:
1. An excavation tool comprising: a tool body mounted on a tip of an excavation machine and having an attaching hole, and an attaching member detachably mounted on the tool body; wherein the attaching member is provided with an attaching shaft inserted into the attaching hole; a groove, which crosses the extension direction of the attaching shaft, is formed in the outer peripheral surface of the attaching shaft; a pin hole, which extends in a direction crossing the extension direction of the attaching hole, is formed in the tool body; a part of the pin hole passes through the attaching hole; a locking pin, which can engage with the groove of the attaching shaft inserted into the attaching hole, is inserted into the pin hole; and an opening of the pin hole is provided with a fixing member which is a rigid body and abuts on the end face of the locking pin to fix the locking pin, and a locking portion which locks the fixing member in the extension direction of the pin hole to fix the fixing member.