Patent ID: 7712235
Filing Date: 2010-05-11
Classification: E02F

Abstract:
1. A lock device of a work machine including a main body and an excavating device, the lock device being provided for locking a boom of the excavating device to the main body, the lock device comprising: an engaging member provided on one of the boom and a boom bracket provided on the main body, wherein the engaging member is constituted by a plate formed on one side thereof with a hook part, and on the other side thereof with a slot, and wherein the engaging member is provided on the other side thereof with first and second surfaces so that the first surface is parallel to the slot, and the second surface is slanted from the slot; an engaged member provided on the other of the boom and the boom bracket; a support pin inserted into the slot; and a guide member is disposed above the support pin, so that the support pin and the guide member support the engaging member, wherein when the engaged member is released from the hook part, either the first surface or the second surface can touch the guide member, and wherein when the engaged member is engaged with the hook part, the second surface touches the guide member.