Kubota Corporation

Robert Stewart Boyd

Erik Baker

Kosuke Oyama

Daniel Underwood

Carlos Cabrera

A front loader includes a link operating mechanism spanning a bucket and a stand. The link operating mechanism is configured to cause, using a swing force of the bucket, a bending and stretching link to bend so that propping and supporting of the bending and stretching link are released.

Front loader

A front loader includes a boom, a main frame attached to a vehicle body, a sub frame supporting the boom and being detachably attached to the main frame. The front loader includes a receiving tool provided on the main frame a cylindrical shaft provided on the sub frame and configured to be engaged with the receiving tool when attaching the sub frame to the main frame, a protruding portion protruding from the main frame and configured to guide the cylindrical shaft to be engaged with the receiving tool, and a coupling plate provided on the sub frame, the coupling plate having an opening through which the protruding portion is inserted when the cylindrical shaft is engaged with the receiving tool. The protruding portion protrudes forward from the main frame in a front-rear direction of the vehicle body.

Front loader and work machine

A hydraulic system includes: a boom cylinder; a working tool cylinder; a boom control valve; a working tool control valve; first and second fluid tubes through which operation fluid is supplied to the boom cylinder; third and fourth fluid tubes through which operation fluid is supplied to the working tool cylinder; a first relief valve provided in a first bypass fluid tube and configured to allow the operation fluid to flow from the fourth fluid tube toward the first fluid tube and to block the operation fluid flowing from the first fluid tube toward the fourth fluid tube; and a second relief valve provided in a second bypass fluid tube and configured to allow the operation fluid to flow from the third fluid tube toward the second fluid tube and to block the operation fluid flowing from the second fluid tube toward the third fluid tube.

Hydraulic system for working machine and the working machine

A front loader includes a boom, a main frame attached to a vehicle body, and a sub frame supporting the boom. The sub frame is attached to the main frame and configured to be detached from the main frame. The front loader includes a first engaging portion provided on the main frame, a second engaging portion provided on the sub frame and configured to be engaged with the first engaging portion when the sub frame is attached to the main frame, a guide portion provided on the main frame and configured to guide the second engaging portion to be engaged with the first engaging portion, and an opening member provided on the sub frame and provided with an opening portion to which the guide portion is inserted when the second engaging portion is engaged with the first engaging portion.

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism causes, using a swing force of the bucket, a bending/stretching link to bend so that propping and supporting of the bending/stretching link are released.

Front loader and working machine

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism causes, using a swing force of the bucket, a bending or stretching link to bend so that propping and supporting of the bending or stretching link are released.

Front loader and working vehicle with forwardly located coupling shaft

A front loader includes a boom, a first pivotal shaft disposed on a tip portion of the boom, a bucket supported by the first pivotal shaft to be capable of performing a shoveling movement and a dumping movement, a boom cylinder to swing the boom, a bucket cylinder to move the bucket to make the bucket perform the shoveling movement and the dumping movement, a control valve to be switched to any one of a first state supplying an operation fluid to the bucket cylinder and a second state stopping supplying the operation fluid to the bucket cylinder, a first movable member to turn around the first pivotal shaft in accordance with the movement of the bucket, and a wire connecting the first movable member to the control valve.

Growing community of inventors

Jefferson, GA, United States of America

Robert Stewart Boyd