Crop machine with operation of two hydraulic machine elements based on movement of one machine part relative to another

摘要

A pull-type crop engaging machine such as a rotary mower comprises a frame mounted on transversely spaced field ground wheels for movement with a hitch arm extending to a tractor and a transport assembly attached behind the frame for moving downwardly to a transport position so that in the transport position the hitch arm extends from one end of the frame generally in the transverse direction for towing the machine in the transverse direction. The transport includes a transport ground wheel which acts to raise the frame to pass underneath the crop engaging system to support the machine on the wheel, on a second wheel behind the frame and on the hitch. The movement of the hitch and the wheel is connected and started at a position of the hitch so that the machine remains balanced. A shield behind the frame includes a portion which moves with the transport wheel.

主权项

1. A crop engaging machine operable by a machine operating person comprising:
a frame mounted on at least one field ground wheel for forward movement during field operation across ground carrying a crop; a crop engaging system mounted on the frame; first and second movable elements on the machine; first and second parts on the machine where the first part is movable relative to the second part between different positions including a predetermined selected position; a first hydraulic cylinder having a link connected to said first element on the machine so that operation of the first hydraulic cylinder causes movement of the first element; a second hydraulic cylinder having a link connected to said second element on the machine so that operation of the second hydraulic cylinder causes movement of the second element; a hydraulic fluid supply system providing a first hydraulic path supplying fluid operating the first hydraulic cylinder and providing a second hydraulic path supplying fluid operating the second hydraulic cylinder; and a valve operable between a first position in which the first hydraulic path is selected to operate the first hydraulic cylinder and a second position in which the second hydraulic path is selected to operate the second hydraulic cylinder; wherein the valve includes a manually operable component so that the valve is operable manually by the machine operating person; wherein the valve includes a linkage so that the valve is operable by the machine operating person only at said predetermined selected position of said first part relative to the said second part; and wherein there is providing a visual indicator having a linkage operable in response to said movement of the first part to said predetermined selected position to indicate to the machine operating person that it is possible to operate the valve.