Front loader and work machine
AssigneeKubota Corporation
InventorsRobert Stewart Boyd, Erik Baker
Life of this patent
Estimating the term…
Abstract
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.
Claims13
A front loader comprising:
- a boom;
- a main frame attached to a vehicle body;
- a sub frame supporting the boom and including an inner sub frame and an outer sub frame opposed to each other, the sub frame being detachably attached to the main frame;
- 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;
- a coupling plate coupled to the inner sub frame and the outer sub frame, the coupling plate being provided with an opening through which the protruding portion is inserted when the cylindrical shaft is engaged with the receiving tool;
- and
- a guide pin coupled to the inner sub frame and the outer sub frame and configured to contact the protruding portion and thereby to move relatively with respect to the main frame when attaching the sub frame to the main frame.
A front loader comprising:
- a boom;
- a main frame attached to a vehicle body;
- a sub frame supporting the boom and including an inner sub frame and an outer sub frame opposed to each other, the sub frame being detachably attached to the main frame;
- 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 the sub frame is attached 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 coupled to the inner sub frame and the outer 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;
- wherein the opening of the coupling plate has a trapezoidal shape defined by an upper edge and a lower edge wider than the upper edge.
A front loader comprising:
- a boom;
- a main frame attached to a vehicle body;
- a sub frame supporting the boom and including an inner sub frame and an outer sub frame opposed to each other, the sub frame being detachably attached to the main frame;
- 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 the sub frame is attached 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 coupled to the inner sub frame and the outer 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;
- wherein the cylindrical shaft is fixed to the coupling plate.
Dependencies are inferred from the claim text.