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Chopper Box

IP.com Disclosure Number: IPCOM000237122D
Publication Date: 2014-Jun-04
Document File: 2 page(s) / 222K

Publishing Venue

The IP.com Prior Art Database

Abstract

A chopper box cutting drum arrangement is proposed. In current designs the timing of the drums in the chopper box needs to be done when the chopper box housing is still open or it needs to be re-opened, e.g. for maintenance reasons. This means that the position of one drum is fixed from the beginning of the gear case assembly process by olts that connect the gear with the drum. Then, a second drum is assembled but not the second gear so that the second drum can still move freely to put in contact the blades of the chopper box to get the timing. Once the timing is done, then the second gear is bolted. The problem is that the timing needs to be done with the gear case opened and partially assembled. In order to improve the assembly it is proposed to keep the gears and the flywheel as they are, as well as one drum. The second drum will be modified in order to enable timing once the gear case is assembled in the machine. Accordingly, a clutch is installed in the power flow between the input and output. The clutch allows the farmer to adjust the position of the blades by himself without using the dealer services. The clutch is located at one output drum shaft. Here, as shown, a multidisc clutch is used. However, other types of clutches can be used as well.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 51% of the total text.

Page 01 of 2

P22361

Current techniques

Mayor problem of this gear case is the way the timing is done. It is assembled in the machine but opened. The position of one drum is fixed from the beginning of the gear case assembly process by the bolts that connect the gear with the drum. Then, second drum is assembled but not the second gear so the second drum can move freely to put in contact the blades of the chopper box to get the timing. Once the timing is done, then second gear is bolted. The problem is that the timing has to be done with the gear case opened and partially assembled (see pictures below).

In order to improve the assembly as shown in the pictures above it is proposed to keep the gears and the flywheel as they are, as well as one drum. The second drum will be modified in order to enable timing once the gear case is assembled in the machine. Accordingly, a clutch is installed in the power flow between the input and output. The clutch allows the farmer to adjust the position of the blades by himself without using the dealer services. The clutch is located at one output drum shaft. Here, as shown, a multidisc clutch is used. However, other types of clutches can be used as well.

The advantage of this design is that the clutch torque capacity can be controlled from outside of the gear box by using a set of bolts that compressed the clutch piston to provide the required torque capacity.

Chopper Box



Page 02 of 2

Also by untightening the set of bolts the clutch is disengaged...