A - Human Necessities – 01 – F
Patent
A - Human Necessities
01
F
100/17
A01F 15/04 (2006.01) A01F 15/08 (2006.01) G01L 1/22 (2006.01)
Patent
CA 1254440
BALE DENSITY CONTROL SENSING APPARATUS AND METHOD ABSTRACT OF THE DISCLOSURE In a bale case (20) of an agricultural baler, a reciprocating plunger (71) is connected by a connecting rod assembly (90) and a wrist pin (92) to a driving crankshaft (74). A tension adjusting system (60) is provided for adjusting the dimensions of a bale case (20). The tension adjusting system (60) is responsive to a signal produced by sensors which sense stress when a compactive force is applied by the plunger (71) to crop material in the bale case (20). In one embodiment shear stress sensors (124,126,128, and 130) are mounted in annular recesses (120,122) on the exterior of a wrist pin (92) to sense upon compaction the shear stress experienced by the wrist pin (92) in shear planes (160A,160B). In another embodiment shear stress sensors (170,171,172 and 173) are mounted on an interior surface (174) of a wrist pin (92') to sense the shear stress experienced by the wrist pin (92') ins hear planes (176,177). In an another embodiment, bending stress sensors (182,183,184 and 185) are mounted on chordal flat portions (180 and 181) of a wrist pin (92") to sense upon compaction the bending stress experienced by the wrist pin (92") in a bending plane. In another embodiment, a load cell (190) with stress sensors (194,195) mounted thereon is mounted between a connecting rod plate (98) and a connecting rod bearing housing (102).
517441
Bigelow Donald O.
Bowen Linwood H.
Sudbrack Cecil R.
New Holland Inc.
Smart & Biggar
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