EP0155592B1 - Pompe à fluide - Google Patents

Pompe à fluide Download PDF

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Publication number
EP0155592B1
EP0155592B1 EP19850102519 EP85102519A EP0155592B1 EP 0155592 B1 EP0155592 B1 EP 0155592B1 EP 19850102519 EP19850102519 EP 19850102519 EP 85102519 A EP85102519 A EP 85102519A EP 0155592 B1 EP0155592 B1 EP 0155592B1
Authority
EP
European Patent Office
Prior art keywords
fluid
pump
pump head
valve
duct
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
EP19850102519
Other languages
German (de)
English (en)
Other versions
EP0155592A1 (fr
Inventor
Gisela Weber
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.)
Bucher GmbH Maschinenfabrik
Original Assignee
Bucher GmbH Maschinenfabrik
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 Bucher GmbH Maschinenfabrik filed Critical Bucher GmbH Maschinenfabrik
Publication of EP0155592A1 publication Critical patent/EP0155592A1/fr
Application granted granted Critical
Publication of EP0155592B1 publication Critical patent/EP0155592B1/fr
Expired legal-status Critical Current

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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
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
    • 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
    • F04B9/14—Pumps characterised by muscle-power operation

Definitions

  • the invention relates to an emergency unit for fluid pumps, in particular for compact fluid pumps that can be used in vehicle construction.
  • the invention aims to provide a fluid pump that enables manual actuation of the fluid pump with little design effort and compact structure.
  • the invention relates to a fluid pump, in particular a hydraulic pump, with a pump head, in which a consumer connection, a pressure fluid channel connected to it, in which a check valve and possibly a safety valve are switched on, and a fluid drain channel with a fluid drain valve are provided;
  • this fluid pump is characterized in that a suction channel connected to a fluid reservoir is also formed in the pump head, which is connected in the pump head on the one hand to a cylinder chamber containing a manually operated piston and on the other hand via a check valve to the pressure fluid channel and the fluid drain valve .
  • the actuating piston for manual actuation is coupled to a hand lever mounted on the outside of the pump head.
  • the actuating piston and the associated check valve lie essentially opposite the check valve and the drain valve and the consumer connection with respect to the pump head axis containing a pump shaft drive bore.
  • an emergency actuation device is integrated into the pump head with a small amount of space, which makes it possible, if necessary, to convey the fluid from the fluid container to the consumer, the emergency actuation device being connected to the normal drain line and the associated drain valve in the pump head.
  • the invention is particularly suitable for so-called compact devices, which are used as drive pumps for car lifts and tail lifts of motor vehicles, for forklifts, scissor lift tables, head vehicles, small elevators, etc. Find application and should have low space requirements and low weight.
  • the pump head 1 shown can be fastened by means of a flange 2 to a reservoir for the hydraulic oil, not shown.
  • the pump head 1 has a central bore 3 for receiving the drive shaft of a z. B. trained as an internal gear pump (not shown).
  • an axially parallel pressure oil bore 4 opens into the pump head, which is connected via a vertical channel 5 to a pressure oil cross channel 6 formed in the upper part of the pump head.
  • a check valve 7 is arranged in this transverse channel 6 at one end thereof and a discharge valve 8 with the discharge channel 8 ′, which can be actuated both electromagnetically and manually, is arranged at the opposite end thereof. Between these two valves, a consumer connection 9 extends from the transverse channel 6 and, parallel to this, a connection 10 for a safety valve (not shown) in the area of the check valve 7.
  • a transverse cylinder 11 for a piston 12 is provided in the lower half of the pump head, the free end of which protrudes from the pump head 1 is coupled to an actuating hand lever 13 pivotably mounted on the pump head.
  • the end face of the cylinder 11 is connected via a transverse channel 14 to an axially parallel bore 15, which is connected to the supply of hydraulic oil.
  • the transverse channel 14 is also connected to the upper transverse channel 6 via a check valve 16 and a channel 17.
  • the consumer can be fed using the hand lever 13.
  • the hydraulic oil is sucked out of the oil reservoir via the bore 14 by means of the piston 12 and pressed to the consumer via the valve 16 and the channels 17 and 6. If the hydraulic oil is to be drained by the consumer, the drain valve 8 is actuated electrically or by hand, as is normally the case.
  • the invention is not limited to the exemplary embodiment shown, but that it can be modified within the scope of the inventive concept.
  • the invention is not limited to the use of a hydraulic medium, but can also be used with a pneumatic medium.
  • the invention can be implemented in connection with various types of pump constructions.
  • the arrangement of the individual valves and the manually operable piston can also differ from that shown; it is essential that the Manually operated pistons and the check valve connected downstream of this or the entire emergency actuation circuits in the pump head are integrated together with the normal feed circuit and in particular with the medium drain valve, which can be actuated in the same way both in normal operation and in emergency operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)

Claims (3)

1. Pompe à fluide, en particulier pompe hydraulique, munie d'une tête de pompe dans laquelle sont prévus un raccordement de consommateur, un canal à fluide sous pression en communication avec celui-ci, dans lequel sont interposées une valve anti-retour et éventuellement une valve de sûreté, et un canal d'échappement de fluide avec une valve d'échappement de fluide, caractérisée en ce que dans la tête de pompe (1) est, en outre, constitué un canal d'aspiration (15) en communication avec un réservoir à fluide et qui est en communication, dans la tête de pompe (1), d'une part, avec une cavité de cylindre (11) contenant un piston (12) pouvant être actionné manuellement et, d'autre part, par l'intermédiaire d'une valve anti-retour (16), avec le canal à fluide sous pression (6) ainsi que la valve d'échappement de fluide (8)
2. Pompe à fluide selon la revendication 1, caractérisée en ce que le piston d'actionnement (12) destiné à l'actionnement manuel est accouplé à un levier à main (13) monté à l'extérieur de la tête de pompe (1).
3. Pompe à fluide selon l'une des
revendications 1 et 2, caractérisée en ce que le piston d'actionnement (12) et la valve anti-retour adjointe (16) sont pratiquement placés en face de la valve anti-retour (7) et de la valve d'échappement de fluide (8) ainsi que du raccordement de consommateur (9) du circuit normal d'alimentation, relativement à l'axe de tête de pompe contenant une perforation d'entrainement d'arbre de pompe (3).
EP19850102519 1984-03-08 1985-03-06 Pompe à fluide Expired EP0155592B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT78284A AT378580B (de) 1984-03-08 1984-03-08 Fluidpumpe
AT782/84 1984-03-08

Publications (2)

Publication Number Publication Date
EP0155592A1 EP0155592A1 (fr) 1985-09-25
EP0155592B1 true EP0155592B1 (fr) 1987-07-22

Family

ID=3499616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850102519 Expired EP0155592B1 (fr) 1984-03-08 1985-03-06 Pompe à fluide

Country Status (3)

Country Link
EP (1) EP0155592B1 (fr)
AT (1) AT378580B (fr)
DE (1) DE3560372D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399130B (de) * 1992-03-18 1995-03-27 Hoerbiger Fluidtechnik Gmbh Anordnung zur hydraulischen betätigung eines fahrzeugverdeckes
CN105526052A (zh) * 2015-12-09 2016-04-27 沈阳飞研航空设备有限公司 高压手动泵

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB298176A (en) * 1927-07-01 1928-10-01 Charles Edward Holliday Improvements in and relating to pumping devices
US2106236A (en) * 1933-08-30 1938-01-25 Burke Byron Ray Compressor
FR762643A (fr) * 1933-10-20 1934-04-14 Bosch Robert Pompe d'alimentation avec pompe à main
US2189675A (en) * 1936-10-19 1940-02-06 Arthur L Parker Fuel distributing device
US2290829A (en) * 1939-09-29 1942-07-21 Timken Roller Bearing Co Fuel pump
FR1259586A (fr) * 1960-03-19 1961-04-28 Prec Mecanique Labinal Perfectionnements apportés aux pompes à pistons et cylindres, notamment pour l'injection du combustible dans les moteurs

Also Published As

Publication number Publication date
ATA78284A (de) 1985-01-15
AT378580B (de) 1985-08-26
EP0155592A1 (fr) 1985-09-25
DE3560372D1 (en) 1987-08-27

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