JPS6451020A - Apparatus for automatic control of height of reaped crop - Google Patents

Apparatus for automatic control of height of reaped crop

Info

Publication number
JPS6451020A
JPS6451020A JP20991787A JP20991787A JPS6451020A JP S6451020 A JPS6451020 A JP S6451020A JP 20991787 A JP20991787 A JP 20991787A JP 20991787 A JP20991787 A JP 20991787A JP S6451020 A JPS6451020 A JP S6451020A
Authority
JP
Japan
Prior art keywords
pulse signal
motion
period
reaping part
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP20991787A
Other languages
Japanese (ja)
Other versions
JP2611779B2 (en
Inventor
Toshiki Hirano
Tetsuya Inada
Wataru Nakagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yanmar Co Ltd
Original Assignee
Yanmar Agricultural Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yanmar Agricultural Equipment Co Ltd filed Critical Yanmar Agricultural Equipment Co Ltd
Priority to JP62209917A priority Critical patent/JP2611779B2/en
Publication of JPS6451020A publication Critical patent/JPS6451020A/en
Application granted granted Critical
Publication of JP2611779B2 publication Critical patent/JP2611779B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)
  • Harvester Elements (AREA)

Abstract

PURPOSE:To enable stable control of the height of reaped crop without generating hunting, by setting the ON period of a pulse signal in the lifting control of a reaping part to a level longer than the ON period of the pulse signal in the lowering motion. CONSTITUTION:A reaping part 4 is lifted or lowered with a lifting apparatus 5 based on the pulse signal transmitted from a reaping height detection sensor 7. The ON period of the pulse signal in the lifting motion is made longer than the ON period in the lowering motion. The operation stroke of the reaping part 4 by the pulse signal becomes nearly the same in the lifting and the lowering control motion of the reaping part 4 and the motion of the reaping part beyond an insensible zone by one output pulse signal is prevented by this process.
JP62209917A 1987-08-24 1987-08-24 Automatic cutting height control device Expired - Fee Related JP2611779B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62209917A JP2611779B2 (en) 1987-08-24 1987-08-24 Automatic cutting height control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62209917A JP2611779B2 (en) 1987-08-24 1987-08-24 Automatic cutting height control device

Publications (2)

Publication Number Publication Date
JPS6451020A true JPS6451020A (en) 1989-02-27
JP2611779B2 JP2611779B2 (en) 1997-05-21

Family

ID=16580801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62209917A Expired - Fee Related JP2611779B2 (en) 1987-08-24 1987-08-24 Automatic cutting height control device

Country Status (1)

Country Link
JP (1) JP2611779B2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141103A (en) * 1979-04-19 1980-11-04 Omron Tateisi Electronics Co Automatic tilling depth controller in tractor
JPS59232021A (en) * 1983-06-13 1984-12-26 株式会社クボタ Reaming harvester
JPS59232020A (en) * 1983-06-13 1984-12-26 株式会社クボタ Reaming harvester
JPS6228835U (en) * 1985-08-02 1987-02-21

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141103A (en) * 1979-04-19 1980-11-04 Omron Tateisi Electronics Co Automatic tilling depth controller in tractor
JPS59232021A (en) * 1983-06-13 1984-12-26 株式会社クボタ Reaming harvester
JPS59232020A (en) * 1983-06-13 1984-12-26 株式会社クボタ Reaming harvester
JPS6228835U (en) * 1985-08-02 1987-02-21

Also Published As

Publication number Publication date
JP2611779B2 (en) 1997-05-21

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees