EP0541644A1 - Systeme de transmission alternatif - Google Patents

Systeme de transmission alternatif

Info

Publication number
EP0541644A1
EP0541644A1 EP19910914026 EP91914026A EP0541644A1 EP 0541644 A1 EP0541644 A1 EP 0541644A1 EP 19910914026 EP19910914026 EP 19910914026 EP 91914026 A EP91914026 A EP 91914026A EP 0541644 A1 EP0541644 A1 EP 0541644A1
Authority
EP
European Patent Office
Prior art keywords
piston
valve
drive apparatus
spool
low pressure
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.)
Withdrawn
Application number
EP19910914026
Other languages
German (de)
English (en)
Inventor
Andrew Pacson Ltd. Clayson
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.)
Pacson Ltd
Original Assignee
Pacson 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 Pacson Ltd filed Critical Pacson Ltd
Publication of EP0541644A1 publication Critical patent/EP0541644A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
    • F04B9/105—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L21/00—Use of working pistons or pistons-rods as fluid-distributing valves or as valve-supporting elements, e.g. in free-piston machines
    • F01L21/04—Valves arranged in or on piston or piston-rod

Definitions

  • Fig. 2 is a sectional end elevation on the line II-II in Fig. 1;
  • the spool 38 defines annular galleries A, B, C, D and E of which galleries B and D are in communication with a blind-end core 39 which opens to the left hand side only of the low pressure piston 15.
  • the galleries A and E are in communication with the pilot valve 30 by way of passages 40 and 41 which extend through the body of the low pressure piston 15.
  • the passages 40, 41 are represented by broken lines.
  • the valves 29 and 30 are side by side as shown in Fig. 2, and the passages 40 and 41 are straight drillings or may be a feature of a casting mould for the low pressure piston.
  • valve block 48 there is provided an assembly of three check valves 55, 56 and 57.
  • the check valve 55 is arranged to pass low pressure hydraulic fluid from an inlet to the valve block 48 to the passage 50 for supplying hydraulic fluid to the right hand side of the high pressure piston 17.
  • the check valve 56 is arranged to pass high pressure hydraulic Uiid from the passage 50 both to the passage 52 and to the intake side of the check valve 57 which passes fluid to a high pressure fluid outlet of the valve block 48.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Dans un dispositif d'intensification de pression hydraulique, une pompe hydraulique à haute pression (16, 17) est actionnée par un système alternatif de transmission hydraulique (10) dans lequel un piston de commande alternatif à basse pression (15) comporte un moyen de soupapes de commande (29, 30) servant à diriger un fluide depuis une source de fluide sous pression, alternativement vers les côtes opposés du piston à basse pression. Le moyen de soupapes de commande (29, 30) comprend des soupapes séparées réciproquement, parmi lesquelles une (29) est conçue pour s'actionner sous la pression du fluide ainsi que pour inverser l'action du piston (15). L'autre soupape (30) est une vanne pilote conçue pour commander l'action de la soupape d'inversion (29). L'action de celle-ci est bistable et s'effectue sur une période relativement courte tandis que l'action de la vanne pilote (30) s'effectue à la vitesse du déplacement du piston à basse pression (15). Une caractéristique du système de transmission à basse pression (10) est l'absence de joints dynamiques dans la soupape d'inversion (29) et la vanne pilote (30).
EP19910914026 1990-08-02 1991-07-22 Systeme de transmission alternatif Withdrawn EP0541644A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909016965A GB9016965D0 (en) 1990-08-02 1990-08-02 Hydraulic reciprocating drive apparatus
GB9016965 1990-08-02

Publications (1)

Publication Number Publication Date
EP0541644A1 true EP0541644A1 (fr) 1993-05-19

Family

ID=10680054

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910914026 Withdrawn EP0541644A1 (fr) 1990-08-02 1991-07-22 Systeme de transmission alternatif

Country Status (4)

Country Link
EP (1) EP0541644A1 (fr)
JP (1) JPH05508898A (fr)
GB (1) GB9016965D0 (fr)
WO (1) WO1992002713A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2020005385A (es) 2019-02-14 2021-01-29 Diaz Luis Olvera Sistema incrementador de eficiencia energetica para dispositivos hidraulicos.
MX2021013474A (es) 2021-11-03 2022-02-11 Alvarez Bernadette Olvera Incrementador de potencia hidráulico.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56129778A (en) * 1980-03-15 1981-10-12 Seiatsu:Kk Pressure transforming device
FR2588316B1 (fr) * 1985-10-09 1990-03-02 Hydroem Verin hydraulique alternatif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9202713A1 *

Also Published As

Publication number Publication date
GB9016965D0 (en) 1990-09-19
WO1992002713A1 (fr) 1992-02-20
JPH05508898A (ja) 1993-12-09

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19930129

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19931215