US 7,510,364 B2
Loading apparatus
Seiji Sakada, Okayama (Japan)
Assigned to Yanmar Co., Ltd., Osaka (Japan); and Yanmar Construction Equipment Co., Ltd., Fukuoka (Japan)
Appl. No. 11/569,486
PCT Filed Sep. 15, 2004, PCT No. PCT/JP2004/013453
§ 371(c)(1), (2), (4) Date Nov. 21, 2006,
PCT Pub. No. WO2005/113902, PCT Pub. Date Dec. 01, 2005.
Claims priority of application No. 2004-152152 (JP), filed on May 21, 2004.
Prior Publication US 2007/0217899 A1, Sep. 20, 2007
Int. Cl. E02F 3/00 (2006.01)
U.S. Cl. 414—685  [414/686; 414/700; 414/917] 1 Claim
OG exemplary drawing
 
1. A loading apparatus comprising:
a bracket fixed on a vehicle;
a lift arm pivoted at one end thereof onto the bracket;
a lift arm cylinder interposed between the bracket and the lift arm and adapted to be telescoped for vertically swinging the lift arm relative to the bracket;
an attachment vertically swingably pivoted onto a tip portion of the lift arm;
an intermediate link pivoted on an intermediate portion of the lift arm;
a bucket cylinder interposed between the intermediate link and the bracket and adapted to be telescoped for vertically swinging the attachment relative to the lift arm; and
a bucket link interposed between the intermediate link and the attachment so as to transmit the telescopic movement of the bucket cylinder to the attachment,
wherein the bucket link is disposed above the lift arm,
wherein the intermediate link includes a pair of left and right plates, so that a rear end portion of the bucket link is pivoted to an upper front portion of the intermediate link between the plates, a tip portion of a piston rod of the bucket cylinder is pivoted to an upper rear portion of the intermediate link between the plates, and a fore-and-aft middle portion of the lift arm is pivoted to a bottom portion of the intermediate link between the plates,
wherein the lift arm is disposed at a lateral middle position between the plates of the intermediate link,
wherein the bucket link is disposed between the plates of the intermediate link and offset laterally outward from the lift arm side so as not to vertically overlap the lift arm,
wherein the lift arm and the bucket link are made of plates,
wherein the bracket is a pair of left and right brackets fixed on the vehicle,
wherein the bucket cylinder is a pair of left and right bucket cylinders, the lift arm is a pair of left and right lift arms, and the lift arm cylinder is a pair of left and right lift arm cylinders provided on the vehicle,
wherein each of the bucket cylinders, each of the lift arms and each of the lift arm cylinders are pivoted at respective rear ends thereof to each of the brackets,
wherein, in each of the brackets, a pivot center of the lift arm is disposed forward and downward from a pivot center of the bucket cylinder,
wherein, in each of the brackets, a pivot center of the lift arm cylinder is disposed forward and downward from the pivot center of the lift arm, and
wherein a stopper is provided on each of the lift arms so as to limit the rotation of a bucket attached to the attachment.