FR2235015A1 - Agricultural tractor overload control - slippage meter on drive wheels, and programmeed switch circuit - Google Patents

Agricultural tractor overload control - slippage meter on drive wheels, and programmeed switch circuit

Info

Publication number
FR2235015A1
FR2235015A1 FR7422010A FR7422010A FR2235015A1 FR 2235015 A1 FR2235015 A1 FR 2235015A1 FR 7422010 A FR7422010 A FR 7422010A FR 7422010 A FR7422010 A FR 7422010A FR 2235015 A1 FR2235015 A1 FR 2235015A1
Authority
FR
France
Prior art keywords
slippage
switch circuit
drive wheels
meter
programmeed
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
FR7422010A
Other languages
French (fr)
Other versions
FR2235015B3 (en
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.)
Technion Research and Development Foundation Ltd
Original Assignee
Technion Research and Development Foundation 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 Technion Research and Development Foundation Ltd filed Critical Technion Research and Development Foundation Ltd
Publication of FR2235015A1 publication Critical patent/FR2235015A1/en
Application granted granted Critical
Publication of FR2235015B3 publication Critical patent/FR2235015B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/56—Devices characterised by the use of electric or magnetic means for comparing two speeds
    • G01P3/60—Devices characterised by the use of electric or magnetic means for comparing two speeds by measuring or comparing frequency of generated currents or voltages
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/11—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means for controlling weight transfer between implements and tractor wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1708—Braking or traction control means specially adapted for particular types of vehicles for lorries or tractor-trailer combinations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The meter measures the circumferential or angular speed of at least one of the drive wheels, together with that of a free-running wheel. The switch circuit is programmed so that the load exerted on the tractor by the towed implement is reduced when the reading for slippage is high, and is increased when the reading for slippage is low. The tractor is fitted with an hydraulic lift, so that the metered slippage signal causes a signal to be sent to a control valve which introduces oil under pressure to that side of the hydraulic cylinder of the lift.
FR7422010A 1973-06-27 1974-06-25 Agricultural tractor overload control - slippage meter on drive wheels, and programmeed switch circuit Granted FR2235015A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL42615A IL42615A0 (en) 1973-06-27 1973-06-27 Load control for wheeled traction vehicles

Publications (2)

Publication Number Publication Date
FR2235015A1 true FR2235015A1 (en) 1975-01-24
FR2235015B3 FR2235015B3 (en) 1977-05-06

Family

ID=11047193

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7422010A Granted FR2235015A1 (en) 1973-06-27 1974-06-25 Agricultural tractor overload control - slippage meter on drive wheels, and programmeed switch circuit

Country Status (4)

Country Link
DE (1) DE2429594A1 (en)
FR (1) FR2235015A1 (en)
IL (1) IL42615A0 (en)
IT (1) IT1016167B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160485A (en) * 1977-12-23 1979-07-10 Ford Motor Company Tractor with draft load control system
NL7811964A (en) * 1978-12-08 1980-06-10 Lely Nv C Van Der TRACTOR.
DE3413435A1 (en) * 1984-04-09 1985-10-17 Alfred Teves Gmbh, 6000 Frankfurt CONTROL DEVICE FOR MOTOR VEHICLES
DE3423032A1 (en) * 1984-06-22 1986-01-02 Alfred Teves Gmbh, 6000 Frankfurt CONTROL DEVICE FOR MOTOR VEHICLES
DE3447094A1 (en) * 1984-12-22 1986-07-10 Emil Dautel GmbH, 7105 Leingarten Articulated road train
AT385872B (en) * 1986-10-15 1988-05-25 Steyr Daimler Puch Ag ARRANGEMENT FOR CONTROLLING THE WORKING DEPTH OF TRACTOR ATTACHMENTS, IN PARTICULAR PLOWING, DEPENDING ON THE TOW

Also Published As

Publication number Publication date
IT1016167B (en) 1977-05-30
FR2235015B3 (en) 1977-05-06
DE2429594A1 (en) 1975-01-23
IL42615A0 (en) 1973-08-29

Similar Documents

Publication Publication Date Title
SE7409849L (en)
DE3480684D1 (en) CONTROL SYSTEM OF A TRACTOR LIFT.
ES428663A1 (en) Power steering gear with relief valve on power piston
FR2235015A1 (en) Agricultural tractor overload control - slippage meter on drive wheels, and programmeed switch circuit
SE7605889L (en) ANTILASH CONTROL SYSTEM
ES451516A1 (en) Tractor with draft load control
ES402999A1 (en) Tractor hydraulic lift system
FR2373224A1 (en) Large dia. bale trailer - has stop projecting through forks to operate raising jack and step drive of conveyor
FR2232978A1 (en) Motorised agricultural vehicle attachment unit - hydraulic units are fitted on both sides of drive units
GB1437408A (en) Brake device
GB1112963A (en) Agricultural tractors
JPS52126830A (en) Four-wheel drive working vehicle
GB1489680A (en) Vehicle steering mechanism with hydraulically activated steering cylinder
GB880604A (en) Side loaders
GB1412664A (en) Agricultural balers
GB1226849A (en)
GB969279A (en) Tractor trailer
GB957322A (en) Improvements in or relating to vehicles
GB1179470A (en) An Improved Anti-Jack Knife Device for Tractor-Trailer Combinations
FR2322034A2 (en) Load sensitive brake control valve - with manual set screw for min. pressure setting up to set loading
GB897779A (en) Hydraulic lift systems in particular for tractor mounted implements
GB1218428A (en) Improvements relating to quick release extension wheel fasteners
JPS6483830A (en) Antiskid device for vehicle
JPS5420511A (en) Device for increasing tractive force of vehicle
DK131618B (en) Crane, in particular truck crane with a load torque limiting control device.

Legal Events

Date Code Title Description
ST Notification of lapse