GB482309A - Improvements in or relating to distribution means for hydraulic gears - Google Patents

Improvements in or relating to distribution means for hydraulic gears

Info

Publication number
GB482309A
GB482309A GB2643536A GB2643536A GB482309A GB 482309 A GB482309 A GB 482309A GB 2643536 A GB2643536 A GB 2643536A GB 2643536 A GB2643536 A GB 2643536A GB 482309 A GB482309 A GB 482309A
Authority
GB
United Kingdom
Prior art keywords
pump
valves
valve
reservoir
oil
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
GB2643536A
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.)
PITTLER WERKZEUGMASCHINENFAB
Original Assignee
PITTLER WERKZEUGMASCHINENFAB
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 PITTLER WERKZEUGMASCHINENFAB filed Critical PITTLER WERKZEUGMASCHINENFAB
Priority to GB2643536A priority Critical patent/GB482309A/en
Publication of GB482309A publication Critical patent/GB482309A/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
    • F16H61/4078—Fluid exchange between hydrostatic circuits and external sources or consumers
    • F16H61/4104—Flushing, e.g. by using flushing valves or by connection to exhaust
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • General Details Of Gearings (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

482,309. Hydraulic gears ; fluidactuated valves. HEERDT, O., and PITTLER WERKZEUGMASCHINENFABRIK AKT.-GES. Sept. 29, 1936, No. 26435. [Classes 69 (ii) and 135] A valve device for use with hydraulic gears comprising a reversible pump part and a motor part is arranged between two pipes connecting the pump to the motor and a third pipe connected to the reservoir, and is so arranged that, whichever connecting pipe is under pressure, the pressure closes the valve between that pipe and the third pipe and opens the valve connecting the third pipe to the return connection between motor and pump. In the form shown in Fig. 1, the two connecting pipes 2, 3 lead to chambers housing opposed lift valve members 5, 6 biassed towards their seats by springs 15. The valves are guided by fluted guides 7, 8 sliding in the casing, which guides are bored to form cylinders housing abutting plungers 9, 10 each subject on its outer face to the pressures existing in the conduits 2, 3. When for example the conduit 3 is under pressure the valve 6 is held against its seat while pressure admitted through passage 14 acts on the plunger 10 which in turn acts on the plunger 9 to open the valve 5, so connecting the passages 2 and 4. In the system shown in Fig. 2, the two connecting conduits adjacent the pump are connected through a valve device 1 as described above and a conduit 4 with an oil reservoir B while the conduits adjacent the motor are connected with the oil reservoir through a similar valve device 1<1>. Oil is supplied to the pump through one or other of the valves in the first mentioned valve device and is returned in part to the reservoir, after passing the motor, through one or other of the valves of the second valve device. The other part of the return flow returns direct to the main pump. In a modification non- return ball valves are inserted in the conduits to cause the whole of the return flow to pass to the reservoir. An auxiliary pump 19 connected to the conduits 2, 3 through non- return valves 30, 31 supplies oil to the hydraulic circuit to ensure the presence of sufficient oil to lubricate the pump P when it is rotating without delivering oil. The system is fitted with relief valves at various points discharging into the reservoir.
GB2643536A 1936-09-29 1936-09-29 Improvements in or relating to distribution means for hydraulic gears Expired GB482309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2643536A GB482309A (en) 1936-09-29 1936-09-29 Improvements in or relating to distribution means for hydraulic gears

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2643536A GB482309A (en) 1936-09-29 1936-09-29 Improvements in or relating to distribution means for hydraulic gears

Publications (1)

Publication Number Publication Date
GB482309A true GB482309A (en) 1938-03-28

Family

ID=10243566

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2643536A Expired GB482309A (en) 1936-09-29 1936-09-29 Improvements in or relating to distribution means for hydraulic gears

Country Status (1)

Country Link
GB (1) GB482309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506233A1 (en) * 1981-05-19 1982-11-26 Scheuerle Fahrzeugfabrik Gmbh HYDRAULIC CONTROL BLOCK

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506233A1 (en) * 1981-05-19 1982-11-26 Scheuerle Fahrzeugfabrik Gmbh HYDRAULIC CONTROL BLOCK

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