Cnh America LLC

Cnh Industrial Belgium Nv

Johnny Bossuyt

André G J Dhont

Marc R M Jonckheere

Frank R G Duquesne

Tom N N Somers

Pieter JP Willem

A grain cleaning system for a combine harvester, comprises a frame supporting a grain pan and a sieve. The grain pan receives grain and chaff separated from the crop by a threshing mechanism and is reciprocable relative to the frame in order to separate the grain from the chaff and to propel the grain and chaff towards the sieve. The sieve is reciprocable relative to the frame and is connected to the frame by front and rear support arms and that are pivotably secured to the frame and to the sieve. In the invention, the front support arms have different geometries from the rear support arms such that when the sieve is reciprocated relative to the frame, the vertical component of oscillation is greater at the front end than at the rear end of the sieve.

Grain cleaning system for a combine harvester

The invention relates to a device for adjusting the width of a sieve opening on combine harvesters so as to permit a quick installation of a new sieve or a quick re-installation of the previously used sieve, whereby enabling the previous width of the sieve opening to be immediately readjusted. The lamellas of the sieve are adjusted by means of an adjusting rail, which is actuated by a transversal shaft and by an adjusting mechanism both of which being mounted in a positionally fixed manner on the sieve housing of the cleaning device. The transversal shaft, to which an upwardly oriented driver is attached, is located underneath the sieve, the driver being connected to the adjusting rail by means of positive locking that can be disengaged by an upward movement of the sieve.

Device for adjusting the width of a sieve mesh on combine harvesters

The invention relates to a device for adjusting the width of a sieve opening on combine harvesters. The aim of the invention is to be able to economically produce this device and to permit a quick installation of a new sieve or a quick re-installation of the previously used sieve, whereby enabling the previous width of the sieve opening to be immediately readjusted. The invention also aims to be able, while using the device, to adjust the width of the sieve opening on a preliminary sieve from an easily accessible location. To these ends, the lamellas of the sieve are adjusted by means of an adjusting rail, which is actuated by a transversal shaft and by an adjusting mechanism both of which being mounted in a positionally fixed manner on the sieve housing of the cleaning device. The transversal shaft, to which an upwardly oriented driver is attached, is located underneath the sieve. This driver is connected to the adjusting rail by means of positive locking that can be disengaged by an upward movement of the sieve.

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Torhout, Belgium

Johnny Bossuyt