PROBLEM TO BE SOLVED: To prevent waste straws, etc. from being caught in a sensor wiring of a layer thickness sensor.SOLUTION: A combine 1 includes: a layer thickness sensor 38 detecting a layer thickness of processing objects on an oscillation separation body 20 and a sensor wiring 43 connected electrically with the layer thickness sensor 38. The sensor wiring 43 is arranged while following a receiving net support member 36 in pulling out from an inner part of a threshing part 3. The receiving net support member 36 includes: a bow-shaped metal 36a following a radial direction of a threshing cylinder 17 and a rib 36b protruding rearward from a rear face of the bow-shaped metal 36a. The sensor wiring 43 of the layer thickness sensor 38 is arranged while following a rear side of the bow-shaped metal 36a and a lower side of the rib 36b.SELECTED DRAWING: Figure 7
