JPS6447302A - Controller for lifting and lowering of tiller - Google Patents

Controller for lifting and lowering of tiller

Info

Publication number
JPS6447302A
JPS6447302A JP20329687A JP20329687A JPS6447302A JP S6447302 A JPS6447302 A JP S6447302A JP 20329687 A JP20329687 A JP 20329687A JP 20329687 A JP20329687 A JP 20329687A JP S6447302 A JPS6447302 A JP S6447302A
Authority
JP
Japan
Prior art keywords
value
tiller
lowering
sensed
lowering speed
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
JP20329687A
Other languages
Japanese (ja)
Other versions
JP2508745B2 (en
Inventor
Seishin Tamai
Yuji Kanefuji
Yoshinori Doi
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.)
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
Original Assignee
Iseki and Co Ltd
Iseki Agricultural Machinery Mfg 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 Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP62203296A priority Critical patent/JP2508745B2/en
Publication of JPS6447302A publication Critical patent/JPS6447302A/en
Application granted granted Critical
Publication of JP2508745B2 publication Critical patent/JP2508745B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Lifting Devices For Agricultural Implements (AREA)

Abstract

PURPOSE:To carry out control of lowering speed for avoiding impact without load on an operator, by reducing the lowering speed just before a tiller reaches the height of the ground surface memorized in the previous work in lowering the tiller to a working position. CONSTITUTION:A preset fixed value is used as the height of the ground surface in starting work at the first time and the lowering speed is reduced as the sensed value of a rear cover angle sensor 16 approaches the fixed value. The speed is then increased to the aimed depth. Control of plowing depth is subsequently carried out so as to provide a difference between a value set by a plowing depth setter 35 and the sensed value by the rear cover angle sensor 16 within a constant range. At this time, sensed values by a lift arm angle sensor 37 is averaged when a tiller enters into a dead zone to calculate the height of the ground surface of a field from the sensed values and the set value of the plowing depth. In starting work in the next time, control of the lowering speed is carried out on the basis of the calculated values in place of the fixed value.
JP62203296A 1987-08-14 1987-08-14 Cultivator lift control device Expired - Fee Related JP2508745B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62203296A JP2508745B2 (en) 1987-08-14 1987-08-14 Cultivator lift control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62203296A JP2508745B2 (en) 1987-08-14 1987-08-14 Cultivator lift control device

Publications (2)

Publication Number Publication Date
JPS6447302A true JPS6447302A (en) 1989-02-21
JP2508745B2 JP2508745B2 (en) 1996-06-19

Family

ID=16471687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62203296A Expired - Fee Related JP2508745B2 (en) 1987-08-14 1987-08-14 Cultivator lift control device

Country Status (1)

Country Link
JP (1) JP2508745B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0220207A (en) * 1988-07-08 1990-01-23 Kubota Ltd Lift controller
JP2007222081A (en) * 2006-02-23 2007-09-06 Mitsubishi Agricult Mach Co Ltd Thresher

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826922A (en) * 1981-08-11 1983-02-17 Babcock Hitachi Kk Combustion controller for boiler

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826922A (en) * 1981-08-11 1983-02-17 Babcock Hitachi Kk Combustion controller for boiler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0220207A (en) * 1988-07-08 1990-01-23 Kubota Ltd Lift controller
JP2007222081A (en) * 2006-02-23 2007-09-06 Mitsubishi Agricult Mach Co Ltd Thresher

Also Published As

Publication number Publication date
JP2508745B2 (en) 1996-06-19

Similar Documents

Publication Publication Date Title
JPS6447302A (en) Controller for lifting and lowering of tiller
JP2505626B2 (en) Lift control device
JPS6216603B2 (en)
JPS602001B2 (en) Elevation control mechanism for ground work equipment
JPS6471402A (en) Automatic device for control mode changeover of working machine
JPS5445469A (en) Positioning controller for working machine of construction vehicle
JPS5849657B2 (en) ground work equipment
JPS6463304A (en) Feed-back control device for ground-working vehicle
JP2510039B2 (en) Lift control device
JPS596648Y2 (en) ground work equipment
JP2559890B2 (en) Lift control device
JPS6463305A (en) Depth control device for ground-working vehicle
JPS6471409A (en) Controller for lifting and lowering of paddy working machine
JPS6183804U (en)
JP2514743Y2 (en) Agricultural depth control device for agricultural tractors
JPS62107702A (en) Automatic lifting and falling controller of agricultural working machine
JP2508647B2 (en) Tractor lift control device for ground work equipment
JPS5935561B2 (en) ground work equipment
JPH0745126Y2 (en) Agricultural working machine plowing depth control device
JPS6423803A (en) Desera controlling device of ground contact working machine
JPS5826925B2 (en) ground work equipment
JPS6427403A (en) Controller for lifting and lowering of reaping part in combine
JPS6474908A (en) Attaching position of sensor for plowing depth control
JPS6471403A (en) Plowing depth controller of rotary tiller
JPH078167B2 (en) Lift control device

Legal Events

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