PROBLEM TO BE SOLVED: To simplify the work of attaching/detaching a collector to/from a support frame in the rear of a riding lawn mower.SOLUTION: Two support frames 46 and 46 are erected in the rear of a vehicle body, and connectors 50 which can be attached/detached by pin connection means are attached to the support frames 46 and 46. A pair of upper and lower lifting links 60 and 62 are attached to the connectors 50, and the rear ends of the lifting links 60 and 62 are pivotally connected to the collector 40. Furthermore, cylinder brackets 54, which can be attached/detached by pin connection means to/from the support frames 46 and 46, are disposed under the support frame 46 and 46 in such a way as replaceable to the collector 40 side or to a carrier 92 side for supporting the collector 40, and a hydraulic cylinder mechanism 69 for lifting the collector 40 is disposed between the cylinder brackets 54 and the lifting links 62 and 62. By disconnecting the collector 40 with the support frames 46 and 46 left in the rear of the vehicle body, the work of attaching/detaching the collector can be simplified.
