GB1142114A - Improvements relating to infinitely variable speed drives for vehicles - Google Patents

Improvements relating to infinitely variable speed drives for vehicles

Info

Publication number
GB1142114A
GB1142114A GB1967167A GB1967167A GB1142114A GB 1142114 A GB1142114 A GB 1142114A GB 1967167 A GB1967167 A GB 1967167A GB 1967167 A GB1967167 A GB 1967167A GB 1142114 A GB1142114 A GB 1142114A
Authority
GB
United Kingdom
Prior art keywords
lever
pedal
pivoted
ratio
adjustment device
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.)
Expired
Application number
GB1967167A
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.)
EICHER TRAKTOR LANDMASCH
Original Assignee
EICHER TRAKTOR LANDMASCH
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 EICHER TRAKTOR LANDMASCH filed Critical EICHER TRAKTOR LANDMASCH
Publication of GB1142114A publication Critical patent/GB1142114A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/02—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance
    • G05G7/04—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof characterised by special provisions for conveying or converting motion, or for acting at a distance altering the ratio of motion or force between controlling member and controlled member as a function of the position of the controlling member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/06—Ratio selector apparatus the ratio being infinitely variable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/42—Control of exclusively fluid gearing hydrostatic involving adjustment of a pump or motor with adjustable output or capacity
    • F16H61/437—Pump capacity control by mechanical control means, e.g. by levers or pedals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H2059/0234—Selectors for gearings using foot control

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

1,142,114. Change-speed control. GEBR. EICHER, TRAKTOREN - U. LANDMASCHINENWERKE. 28 April, 1967 [4 Nov., 1966], No. 19671/67. Heading F2D. The ratio of an infinitely variable hydrostatic gear for a vehicle such as an agricultural tractor is set to a desired value by a hand lever 3 and can be varied or reversed by operation of a pedal 17, the ratio returning to the desired value on release of the pedal. The hand lever 3 is linked to a bell-crank lever 7 which is linked to a lever 10 fast with a shaft 11 having a lever 12 connected by a rod 13 to a lever 15 which is pivoted at its midpoint 16 to a lever 18 and is pivoted at 20 to a rod 21 which is connected to a lever 23 adjusting the transmission. The lever 18 is fast with the pedal 17 and is pivoted at 19 to a fixed part, and the pivot point 16 bears against a rubber buffer 26. On movement of the hand lever 3 from the position I, in which the vehicle is stationary to a position II, the resistance to movement of the adjustment device operated by lever 23 holds the pivot 20 stationary and the pivot 16 moves, compressing the rubber buffer 26. On further movement of the lever 3 towards a position III the pivot 16 does not move further and the pivot 20 is shifted to the right, thus moving the lever 23 and operating the adjustment device to give forward movement, the position of the lever determining the ratio, and the lever 3 being retained in its set position by friction discs. If the speed is to be increased above that set by the lever 3, pedal 17 is pivoted in the direction of arrow A. The resistance provided by the friction discs acting on the lever 3 is greater than that of the adjustment device, so that the end 14 of the lever 15 is held stationary and the lever is pivoted anti-clockwise about this end to adjust the ratio. On release of the pedal a restoring device (see below) returns the lever 23 and pedal 17 to their original positions. If the ratio is to be reduced or the vehicle reversed, the pedal 17 is pivoted in the direction of arrow B, the maximum reverse position of the linkage being shown in chain-dotted lines. The adjusting lever 23 is fast with a shaft 24 which is fast with a plate 27 (see Fig. 4) having a cam slot 28 co-operating with a guide pin 29 on a lever 38 which is pivoted at 39 and actuates the adjustment device. The guide pin 29 is also connected to a rod 31 connected by a centring spring 34 to a housing 35 to provide the restoring force for returning the adjustment device to its preset position on release of the pedal 17. The housing 35 can be given a slight pivotal movement by an eccentric adjusting means in order to enable the speed to be set accurately to a low value to provide a constant crawling speed. The lever 23 is also connected to the speed control member of the driving engine, such as the regulator rod of a diesel engine, so that when the selector lever adjusts the ratio to give increased speed the fuel supply to the engine is increased correspondingly.
GB1967167A 1966-11-04 1967-04-28 Improvements relating to infinitely variable speed drives for vehicles Expired GB1142114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0032772 1966-11-04

Publications (1)

Publication Number Publication Date
GB1142114A true GB1142114A (en) 1969-02-05

Family

ID=7075814

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1967167A Expired GB1142114A (en) 1966-11-04 1967-04-28 Improvements relating to infinitely variable speed drives for vehicles

Country Status (1)

Country Link
GB (1) GB1142114A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159251A (en) * 1984-05-18 1985-11-27 Kubota Ltd Controlling hydraulic change speed device of tractor
GB2191272A (en) * 1986-06-07 1987-12-09 Massey Ferguson Mfg Throttle controls

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159251A (en) * 1984-05-18 1985-11-27 Kubota Ltd Controlling hydraulic change speed device of tractor
GB2191272A (en) * 1986-06-07 1987-12-09 Massey Ferguson Mfg Throttle controls
GB2191272B (en) * 1986-06-07 1989-12-13 Massey Ferguson Mfg Throttle controls

Also Published As

Publication number Publication date
DE1555285B2 (en) 1976-01-02
DE1555285A1 (en) 1970-09-03

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