Feederhouse Debris CleanerFeederhouse Debris Cleaner

Ross Chapman, Brad Craycraft, & Joe RinerRoss Chapman, Brad Craycraft, & Joe Riner

April 20, 2006April 20, 2006

John Deere 9650 STS Combine

Problem Statement:

Design a fan similar to a leaf blower that will keep debris from building up on top of the feederhouse of a combine. It should engage with the header control and be able to withstand the environment it will be in.

Objectives:•Design the apparatus necessary for a mechanically

driven squirrel cage fan.•Design the apparatus necessary for an electrically-

powered squirrel cage or centrifugal fan.•Design the apparatus necessary for a hydraulically-

driven centrifugal cage fan.•Construct and evaluate the design approved by the

sponsor, Mike Chapman of Chapman Farms Inc.

Feederhouse Debris Cleaner. Ross Chapman, Brad Craycraft, Joe Riner. ASM

April 20, 2006

Area where debris builds up

Mounting point of fan

Electric Drive

Design CriteriaDesign Criteria

Blower fan with 400 cfm and 200 mph.Shaft drive, requires 2.5 HP @ 7000 RPMs.12V x 22A = 264 Watts264 Watts / 746 Watts/HP = 1/3 HP8 HP = 1 electric HP1/3 * 8 = 2.64 HP

AdvantagesAdvantages

Motor: $70Fan & housing: $0Ease of installation

Mechanical Drive

Design CriteriaDesign Criteria

Blower fan with 400 cfm and 200 mph. Shaft drive, requires ¾ HP @ 3500 RPMs.

ComplicationsComplications

No suitable attachment point for the drive pulley. The fan for this design cost $528.

Hydraulic Drive

Design CriteriaDesign Criteria

Blower fan with 400 cfm and 200 mph. Shaft drive, requires ¾ HP @ 3500 RPMs.

ComplicationsComplications

Dimensions of fan would not work with the clearance requirements. The fan for this design cost $528.

Initial Sketch of Mechanical Drive

Initial Sketch of Electric Drive

Initial Sketch of Hydraulic Drive

Three Design Options

Chosen Design

Electric DriveElectric Drive

Simple construction and low cost.

Materials used were appropriate because the return value to the sponsor would not justify an expensive solution.Design can be used on multiple makes and models of combines.

Electric Schematic

The motor is turned on when the header is engaged by means of a relay.

10 gauge wire is needed to supply the 22 amp load to

and from the motor relay.A 30 amp inline fuse is used

between the battery and the relay.

Project Cost

1.GE Moisture and Dust Proof 12-volt DC motor $70.00

2.Fan Blade $15.00 3.Fan Blade Housing $30.00 4.ProE Drawings $45.005.Mounting brackets $30.006.Switch $2.00 7.Solenoid/relay $5.00 8.Wiring $3.00 9.30 amp circuit breaker $2.0010.Paint $8.0011.Total:$210.00