MCHALE, PADRAIC CHRISTOPHER,MCHALE, MARTIN WILLIAM,MCHALE, PAUL GERARD,HEANEY, JAMES JOHN,BIGGINS, JOHN PATRICK,HEANEY, JAMES JOHN,SHERIDAN, GERARD PATRICK,COLLINS, DONAL PATRICK
申请号：
PL16725606
公开号：
PL3297414T3
申请日:
2016.05.17
申请国别(地区):
PL
年份:
2020
代理人:
摘要：
Coupling apparatus (1) for coupling a mower (3) to a carrier arm (18) which is coupled to a rearward three-point linkage of a tractor comprises a linkage mechanism (20) which couples the mower (3) to the carrier arm (18). The linkage mechanism (20) comprises a first link member (25), a second link member (26) and a third link member (27) which are pivotally coupled between the carrier arm (18) and a mounting member (21) which rigidly carries the mower (3). The linkage mechanism (20) is configured, so that in the event of the mower (3) striking an obstruction, the mounting member (21) and in turn the mower (3) moves from an operative state with a skid plate (7) of the mower (3) engaging and riding along the ground, to a displaced state with the mounting member (21) and the mower (3) urged upwardly rearwardly with the skid plate (7) of the mower (3) spaced apart above the ground. A pair of tension springs (80) acting between the mounting member (21) and the carrier arm (18) resiliency urge the mounting member (21) and in turn the mower (3) into the operative state. The linkage mechanism (20) also defines a secondary pivot axis (97) about which the mounting member (21) and the mower (3) are tiltable.
