| 摘要 |
A gang mower assembly (20) which is intended to be mounted on a steerable wheeled driving unit (21), with front and rear mower units (25, 26) spaced apart lengthwise of the driving unit (21), and laterally spaced apart so as to present a combined mowing face to a standing crop and with an overlap setting (31) which is zero or of minimal extent during straight line forward mowing. The front mower unit (25) is mounted on a forward part (22) of the driving unit (21), and the rear mower unit(s) (26) is connected to a rear part (23) of the driving unit (21). The driving unit (21) has a chassis with a front part (22) on which the front mower unit (25) is mounted, and a rear part (22) to which the rear mower unit(s) (26) is connected, and a pivot steering mechanism (24) interconnects the front and rear chassis parts (22, 23). The gang mower assembly includes monitoring means which is operative, during a steering manoeuvre, to monitor instantaneously (i) distance travelled and (ii) the steering angle and to generate a compensating adjustment signal for the lateral adjustment of the rear mower units (26), and a control means which responds to the adjustment signal to effect instantaneous lateral adjustment of the rear mower unit (26) so that the latter substantially follows the path of the front mower unit (25) and effectively maintaining the overlap setting (31), during a steering manoeuvre, and substantially without risk of an unmown area being formed. <IMAGE>
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