A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/19
A01B 3/00 (2006.01) A01B 3/421 (2006.01) A01B 3/46 (2006.01)
Patent
CA 1230254
ABSTRACT Reversing mechanism, particularly for semi-reversible ploughs, where the reversing mechanism includes hydraulic reversing cylinders (10, 11). The reversing mecha- nism, or device (5) to be reversed, includes a lifting arm (8) which at its one end is rotatably supported at a point (9) which the reversing mechanism turns about, and which at its other end is fastened to the device (5) to be reversed. The reversing cylinders (10, 11) have approximately the same volume and approxi-mately the same length of stroke and are affixed symmetrically to the lifting arm (8). The piston rods of the reversing cylinders (10, 11) are rotatably attached (15, 19) with one end of a pressure arm (17, 18) whose other end is rotatably fixed to the point (9) about which the reversing mechanism rotates. Each reversing cylinder (10, 11) is single-acting and arranged to turn the lifting arm (8) approxi- mately 110 degrees from horizontal position before the reversing cylinder (10, 11 ) has attained full length of stroke and the piston rod of the non-activated reversing cylinder (11, 10) is brought to abut against the abutment screw (21, 16) and brake the remainder of the reversing operation, which takes place with the aid of gravity. To identical double-acting hydraulic steering cylinders (24,25) are connected in parallel with the reversing cylinders (10, 11) and are thusarranged automatically to adjust, for example, the back wheel (4) of a semi-rever- sible plough when the reversing mechanism is activated. Figure 2.
471020
Fetherstonhaugh & Co.
Kverneland A/s
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