FR2414665A1 - Slave mechanism for hydraulic transmission of excavator - has lock preventing reversal unless pump control attains specified position - Google Patents

Slave mechanism for hydraulic transmission of excavator - has lock preventing reversal unless pump control attains specified position

Info

Publication number
FR2414665A1
FR2414665A1 FR7800947A FR7800947A FR2414665A1 FR 2414665 A1 FR2414665 A1 FR 2414665A1 FR 7800947 A FR7800947 A FR 7800947A FR 7800947 A FR7800947 A FR 7800947A FR 2414665 A1 FR2414665 A1 FR 2414665A1
Authority
FR
France
Prior art keywords
pump control
excavator
specified position
hydraulic transmission
lock preventing
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
FR7800947A
Other languages
French (fr)
Other versions
FR2414665B1 (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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to FR7800947A priority Critical patent/FR2414665B1/en
Publication of FR2414665A1 publication Critical patent/FR2414665A1/en
Application granted granted Critical
Publication of FR2414665B1 publication Critical patent/FR2414665B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16H61/46—Automatic regulation in accordance with output requirements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/101—Infinitely variable gearings
    • B60W10/103—Infinitely variable gearings of fluid type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • 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
    • F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
    • 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
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes

Abstract

The slave unit is designed for incorporation in the controls of an hydrostatic transmission, utilising a lever(15) in selecting the sense of rotation. A spring(14) or hydraulic pressure acts in the direction of the switch and on a distributor inverter(8), with the evvect that a locking mechanism(17) prevents switching unless a pump control(10) has attained a predetermined position. The latter position depends on the pressure in the relevant feed(9), and the transmission is of a type having a two-way reversible variable discharge pump. The hydraulic pump control automatically returns to a zero discharge position, being activated bi-laterally by a control distributor.
FR7800947A 1978-01-13 1978-01-13 HYDRAULIC CONTROL DEVICE FOR ADJUSTING THE DEMULTIPLICATION OF A HYDROSTATIC TRANSMISSION Expired FR2414665B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7800947A FR2414665B1 (en) 1978-01-13 1978-01-13 HYDRAULIC CONTROL DEVICE FOR ADJUSTING THE DEMULTIPLICATION OF A HYDROSTATIC TRANSMISSION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7800947A FR2414665B1 (en) 1978-01-13 1978-01-13 HYDRAULIC CONTROL DEVICE FOR ADJUSTING THE DEMULTIPLICATION OF A HYDROSTATIC TRANSMISSION

Publications (2)

Publication Number Publication Date
FR2414665A1 true FR2414665A1 (en) 1979-08-10
FR2414665B1 FR2414665B1 (en) 1986-06-27

Family

ID=9203432

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7800947A Expired FR2414665B1 (en) 1978-01-13 1978-01-13 HYDRAULIC CONTROL DEVICE FOR ADJUSTING THE DEMULTIPLICATION OF A HYDROSTATIC TRANSMISSION

Country Status (1)

Country Link
FR (1) FR2414665B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515582A1 (en) * 1981-11-03 1983-05-06 Linde Ag CONTROL ARRANGEMENT FOR A HYDRAULIC PREFERABLY TRANSMISSION THAT CAN BE CONTINUOUSLY ADJUSTED

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1550648A1 (en) * 1965-11-02 1969-07-10 Anderson Mavor Ltd Hydraulic drive system
DE2043197A1 (en) * 1970-09-01 1972-03-02 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Device for operating a hydrostatic machine
DE2129830A1 (en) * 1971-06-16 1972-12-21 Verlinde Sa Servo control device for changing the output and throughput direction of a pump with variable delivery capacity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1550648A1 (en) * 1965-11-02 1969-07-10 Anderson Mavor Ltd Hydraulic drive system
DE2043197A1 (en) * 1970-09-01 1972-03-02 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Device for operating a hydrostatic machine
DE2129830A1 (en) * 1971-06-16 1972-12-21 Verlinde Sa Servo control device for changing the output and throughput direction of a pump with variable delivery capacity

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2515582A1 (en) * 1981-11-03 1983-05-06 Linde Ag CONTROL ARRANGEMENT FOR A HYDRAULIC PREFERABLY TRANSMISSION THAT CAN BE CONTINUOUSLY ADJUSTED
US4543787A (en) * 1981-11-03 1985-10-01 Linde Aktiengesellschaft Controls for continuously adjustable drive

Also Published As

Publication number Publication date
FR2414665B1 (en) 1986-06-27

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Legal Events

Date Code Title Description
ST Notification of lapse