Patent ID: 7137237
Filing Date: 2006-11-21
Classification: A01D

Abstract:
1. A forage harvester blower including a blower rotor having a plurality of generally radially extending rotor paddles which operate in a corresponding substantially cylindrical housing, wherein the said housing is provided with adjustment mechanism for at least locally adjusting the diameter of the housing, wherein said adjustment mechanism comprises a wear plate having a position which is adjustable such that by adjusting the position of the wear plate the diameter of the blower housing can be adjusted, wherein said wear plate is provided between the inlet section and the outlet section of the blower, wherein said wear plate is pivotably hinged on said housing such that the diameter of the housing can be adjusted by pivoting the wear plate, wherein said wear plate is connected to the housing by a mechanism of at least one adjustment assembly, which is suitable for adjusting the position of said wear plate, wherein each adjustment assembly comprises an active adjustment unit for manually adjusting the position of the wear plate and a passive adjustment unit for automatically adjusting the position of the wear plate, wherein said passive adjustment unit is able to be automatically activated when the pressure F exerted on the wear plate exceeds a threshold value, wherein the active adjustment unit is provided on the housing and the passive adjustment unit is provided on the wear plate, wherein said active adjustment unit is connected to the passive adjustment unit, wherein the active adjustment unit comprises a latch of which the front side is releasably mounted on the housing and of which the back side which extends outwardly from the housing is provided with a countersunk hole, said latch being provided with an adjustable rod that is moveably attached to the housing.