Patent ID: 8016540
Filing Date: 2011-09-13
Classification: E02F,Y10T

Abstract:
1. A boom for a work vehicle comprising: a first boom having a base end side and a distal end side and comprising a first boom main body portion formed from right side, left side, top, and bottom walls extending between the base end side and the distal end side of the first boom, the first boom having, on the base end side, a pivoted coupling member pivotally coupleable to a boom support section of a running body of the work vehicle; and a second boom having a base end side and a distal end side and comprising a second boom main body portion formed from right side, left side, top, and bottom walls extending between the base end side and the distal end side of the second boom, the second boom having its base end side pivotally coupled to the distal end side of the first boom and in which an arm is pivotably coupled to the distal end side of the second boom; wherein a lateral width of the second boom main body portion is set to be smaller in a second region at the base end side of the second boom than in a first region at the distal end side; the base end side of the second boom is inserted between the left and right side walls of the distal end side of the first boom, and the second boom is pivotably coupled to the first boom to form a pivoted coupling section so as to be capable of rotation about a lateral axis; and the lateral width of the first region of the second boom main body portion and a lateral width of the first boom are formed so as to be substantially the same so that the pivoted coupling member of the base end side of the first boom is configured to be shared with a pivoted coupling member of a standard boom.