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Installation / retaining device which allows a single operator to position a cutterhead floor of a forage harvester to the cutterhead frame without tools

IP.com Disclosure Number: IPCOM000207105D
Publication Date: 2011-May-17
Document File: 3 page(s) / 119K

Publishing Venue

The IP.com Prior Art Database

Related Documents

DD224476, DE19652656, DE2445702, EP1852011, DE2240328: PATENT

Abstract

The rear end of the cutterhead floor has lateral portions on both sides which are resting on flat supports provided on the side wall of the cutterhead housing. A stop is releasably mounted at the rear end of the support and can be moved in a generally vertical direction between a lowered position in which its upper edge is below the support (or at least does not significantly extend above the support) and a raised position in which its upper edge is located above the support and thus acts as an arrester for the cutterhead floor. The stop is an element with a generally C-shaped cross section and both ends abutting the support while the center comprising a vertically extending oblong hole through which a bolt extends into a thread in the support, the head of the bolt abutting the stop.

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Installation / retaining device which allows a single operator to position a cutterhead floor of a forage harvester to the cutterhead frame without tools

      The cutterhead of a forage harvester is rotatably mounted in a housing fixed to the forage harvester frame. Between the shearbar at the inlet of the cutterhead and the outlet of the cutterhead, beneath the cutterhead knives, a cutterhead floor is mounted. Generally, a kernel processor or a blower is provided downstream the floor. The position of the floor needs to be adjusted from time to time when the circumference of the cutterhead knives is getting smaller due to wear and when new knives are mounted. The cutterhead floor is supported at its forward end in the vicinity of the shearbar and at its rear end on the cutterhead housing.

      In the prior art (CNH forage harvesters), mounting of the cutterhead floor at its rear end is provided by a bracket welded to the inner side wall of the cutterhead housing. The cutterhead floor rests on the bracket and is fixed by bolts and nuts. The radius of the floor can be adjusted by washers that can be mounted between the bracket and the floor. Other prior art uses complicated mechanisms with spindles and links for adjusting the cutterhead floor positions (DD 224476, DE 19652656, DE 2445702, EP 1852011) or oblong holes in the cutterhead floor (DE 2240328). It is proposed that the rear end of the cutterhead floor has lateral portions on both sides which are resting on flat supports provided on the side wall of the cutterhead housing. A stop is releasably mounted at the rear end of the support and can be moved in a generally vertical direction between a lowered position in which its upper edge is below the support (or at least does not significantly extend above the support) and a raised position in which its upper edge is located above the support and thus acts as an arrester for the cutterhead floor. The stop is an element with a generally C-shaped cross section and both ends abutting the support while the center comprising a vertically extending oblong hole through which a bolt extends into a thread in the support, the head of the bolt abutting the stop. Since the cutterhead floor is resting on the supports it is now possible to slide it inwards to the functiona...