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Cutting Knife Brake Systems for Corn Heads

IP.com Disclosure Number: IPCOM000248241D
Publication Date: 2016-Nov-10
Document File: 3 page(s) / 87K

Publishing Venue

The IP.com Prior Art Database

Abstract

On chopping platforms and/or corn heads several cutting elements like cutting knifes are rotating for crop cutting. When the cutting drive stops it must be assured that the cutting knifes stop immediately. On the other hand, due to safety reasons and break prevention of components of the cutting knife arrangement, the cutting knife gear box needs to rotate free in a counter drive rotation direction. Therefore, when the drive stops, the rotating components of the knife drive will continue rotating if not stopped. Two different designs are disclosed herein in order to overcome the above mentioned problems. The following 2 designs are related to a brake systems for the free inertia within the gear box, in this case a free spinning gear of said gear box.

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Cutting Knife Brake Systems for Corn Heads

On chopping platforms and/or corn heads several cutting elements like cutting knifes are rotating for crop cutting. When the cutting drive stops it must be assured that the cutting knifes stop immediately. On the other hand, due to safety reasons and break prevention of components of the cutting knife arrangement, the cutting knife gear box needs to rotate free in a counter drive rotation direction. Therefore, when the drive stops, the rotating components of the knife drive will continue rotating if not stopped.

Two different designs are disclosed herein in order to overcome the above mentioned problems. The following 2 designs are related to a brake systems for the free inertia within the gear box, in this case a free spinning gear of said gear box.

Cutting knife brake system with spring biased braking pins on ring-shaped ramp

and free turn clutch.

New design brake is included in the free spinning element and generates the friction effort against a stopped bevel gear that is connected to the input shaft of the gearbox. The brake elements are compound by a series of springs and a guided pad that is always in contact with the bevel gear. Besides the brake element, a one way clutch allow the free motion between the bevel gear and the free inertia, which in this case is stopped by the brake.

The clutch is a one way (free turn) clutch driving only in one rotation direction, so that the free spinning element is driven by the clutch when the clutch is driven by a drive shaft, but there is no drive connection vice versa from the free spinning element towards the clutch. When the drive on the one way clutch is stopped, the bevel gear stands still and the free spinning element keeps rotating relative to the bevel gear due to the inertia of the cutting disc assembly. Now the spring loaded pads, pres...