EP0023323A2 - Dispositif de commande pour transmission hydrostatique ou pompe à pistons - Google Patents

Dispositif de commande pour transmission hydrostatique ou pompe à pistons Download PDF

Info

Publication number
EP0023323A2
EP0023323A2 EP80104205A EP80104205A EP0023323A2 EP 0023323 A2 EP0023323 A2 EP 0023323A2 EP 80104205 A EP80104205 A EP 80104205A EP 80104205 A EP80104205 A EP 80104205A EP 0023323 A2 EP0023323 A2 EP 0023323A2
Authority
EP
European Patent Office
Prior art keywords
piston
actuating piston
bore
spring
control
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
EP80104205A
Other languages
German (de)
English (en)
Other versions
EP0023323B1 (fr
EP0023323A3 (en
Inventor
Franz Forster
Harald Stein
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.)
Linde GmbH
Original Assignee
Linde GmbH
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 Linde GmbH filed Critical Linde GmbH
Publication of EP0023323A2 publication Critical patent/EP0023323A2/fr
Publication of EP0023323A3 publication Critical patent/EP0023323A3/de
Application granted granted Critical
Publication of EP0023323B1 publication Critical patent/EP0023323B1/fr
Expired legal-status Critical Current

Links

Images

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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F04B1/08—Control regulated by delivery pressure

Definitions

  • the invention relates to a control device for a hydrostatic transmission or preferably a hydrostatic piston pump,
  • the lever which transfers the force generated by the control pressure to a control spring
  • the lever is designed as a straight-line lever that extends approximately parallel to the longitudinal extension of the control piston, and both the control valve and the control spring are arranged in transverse bores in the control piston, that has the disadvantage that, on the one hand, there is only little space available for the control springs and that the adjusting piston must be removed from the control device in order to readjust the abutment of the control spring in order to change its preload.
  • a control and regulating device for a hydrostatic piston pump is already known, in which the lever is used as Angle lever is designed.
  • the lever part which extends approximately parallel to the longitudinal extent of the actuating piston, extends in a space in front of the one end face of the piston, that is to say in a space in which the pressure acts on the actuating piston.
  • this signal pressure also acts counter to the control pressure on the pistons acted upon by the control pressure.
  • constructive measures are necessary in the known device.
  • Two pistons are provided which lie opposite one another and are connected to one another and which act directly against / of two control springs.
  • Another spring which interacts with the control springs, is arranged outside the control and regulating device and connected to the valve slide, which is arranged in a longitudinal bore of the actuating piston, via a pull rod (CH-PS 5ol 835).
  • This embodiment is very complex, requires a large pressure space, in which the lever can be moved, in front of one end face of the actuating piston and requires many relatively complex components.
  • the invention has for its object to provide a control device according to the preamble of claim 1, which can be produced with little effort and in which the abutment of the control spring; is arranged in the actuating piston in such a way that the prestressing of the spring can be adjusted without having to remove the actuating piston.
  • the closure body serves on the one hand to seal the space in front of the end face of the piston from the unpressurized space in which the spring and the angle lever is arranged, and on the other hand serves as an abutment for the spring.
  • This closure body is supported by a thread in the longitudinal bore and is therefore easily adjustable in its position in the longitudinal bore and can be fixed in the usual way by a lock nut or a bracing element. This setting can easily be made from the front of the control piston without having to remove the control piston.
  • this closing body the spring preload and thus the control characteristic of the controller can easily be changed and adjusted to a selected power.
  • a controller for a swivel carriage pump is shown in section.
  • the housing base 1 is the end part of a housing of a swivel carriage pump, which is no longer shown in the drawing, the guideway for the swivel carriage, which is no longer shown, being arranged on the side of the housing base 1 facing away.
  • a longitudinal bore 3 is provided, which is closed on one side by a cover 4, which is connected to the part 2 by screws 5.
  • a closure part 6 is connected to the part 2 by screws 5, this closure part 6 having a bush part 7 which projects into the bore 3.
  • a bore 8 is provided, which is configured in the front part as a cylinder bore 9, in which a sliding seal 10 is arranged and in which the part 11 of smaller diameter of the actuating piston slides sealingly.
  • the part 11 is firmly connected to the part 12 of larger diameter of the actuating piston, which slides with its head part 13 directly in the bore 3, a sealing ring 14 being provided for the seal.
  • a channel is no longer shown in the drawing, which is connected to the delivery pressure channel of the swivel carriage; This channel is connected to a bore 15 which is connected to a transverse bore 16 which is connected to the interior of the bore 8 via the bore 17.
  • the bore 15 is still in communication with the space 18, which is closed by a plug.
  • a component 20 protrudes into the space 18 and seals into the Part 2 is screwed in.
  • a cylinder bore is provided, in which the control pressure piston 21 is displaceable. This is supported against a support body 22 which has a groove 23 so that the same pressure always prevails on both end faces of this support body 22.
  • the support body 22 bears against an angle lever 24 which is pivotably mounted in the actuating piston 11, 12 by means of a joint pin 25.
  • the spring plate 27 against which the spring 28 is supported, which is arranged in a bore 29 of the actuating piston 11, 12 and is supported against a body 30 which is screwed into a Threaded part of the longitudinal bore 29 is screwed in and can be fixed in a preselectable position.
  • the actuating piston 11, 12 is connected by a transverse pin 31 to the swivel slide, which is no longer shown in the drawing.
  • a longitudinal bore 32 which merges with a shoulder 33 into a bore 34 of smaller diameter.
  • a spring 35 is arranged, which is supported on one side against a shoulder 36 and on the other side against a spring plate body 37 which bears against a Seeger ring 38 and in which two bores 39 in a bore 40 open and which has an end face 61.
  • a bore 41 extends from the bore 34 to a transverse bore 42. Offset to the bore 41, a bore 43 adjoins the transverse bore 42, which, via a transverse bore 44, is no longer shown in the drawing with the space 45 in front of the end face of the Actuating piston 12, 12 is connected.
  • a valve body 46 is inserted, in which a valve slide 47 is displaceable which bears against the angle lever 24 and has annular grooves, while the valve body 46 has bores which are connected to the bores 41 and 43.
  • the annular groove arranged on it creates a connection between the channels 41 and 43 or connects another recess between the channel 43 and the space in front of the end face of the valve slide 47 in the bore 42.
  • a stop screw 49 is screwed into the end part 6 and can be adjusted in any position by means of a lock nut 50.
  • the mode of operation is as follows:
  • the delivery pressure of the pump acts in the channel 15 and thus in the space 18 and acts on the end face of the control piston 21.
  • the force resulting from this pressure effect on the end face acts on the intermediate support body 22 and, via this, on the long arm of the lever 24.
  • This force is counteracted by the force of the spring 28 on the other side. If the product of the force exerted by the pressure exerted on the end face of the control piston 21 times the associated lever arm, the product of the force of the spring 28 times that assigned lever arm, the spring 28 is pushed back.
  • the lever 24 is pressed to the right in the drawing and thus presses on the spool body 47, which thus creates a connection between the bore 41 and the bore 43 through its annular groove.
  • the spring plate body 37 comes to rest against the end face of the stop screw 49 and, when the actuating piston 11, 12 moves further downward, compresses the spring 35 so that the spring 35, which is thus over the spring plate body 37 and the stop screw 49 is supported on the housing, on the other hand exerts a force on the actuating piston 11, 12 such that the pump is thereby pivoted out of the zero delivery position.
  • the spring plate body 37 can at most be pressed so deep into the bore 32 that the end face 61 of the spring plate body 37 bears against the shoulder 33 is coming. This also defines the minimum swivel position for the pump. The minimum pivot position can thus be set by adjusting the stop screw 49.
  • the spring plate body 37 can at most be pressed so deep into the bore 32 that the end face 61 of the spring plate body 37 comes to bear against the shoulder 33. This also defines the minimum swivel position for the pump. The minimum pivoting position can thus be set by adjusting the stop screw 49.
  • the spring 62 is supported against a spring plate 63 which is fixed in the bore 42.
  • the plug 66 closes off the bore 43.
  • the stop screw 64 limits the maximum stroke of the controller and thus the maximum pivot position.
  • the stop screw 64 can be fixed by means of the nut 65.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Control Of Fluid Gearings (AREA)
EP80104205A 1979-07-25 1980-07-17 Dispositif de commande pour transmission hydrostatique ou pompe à pistons Expired EP0023323B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792930139 DE2930139A1 (de) 1979-07-25 1979-07-25 Regeleinrichtung fuer ein hydrostatisches getriebe oder eine kolbenpumpe
DE2930139 1979-07-25

Publications (3)

Publication Number Publication Date
EP0023323A2 true EP0023323A2 (fr) 1981-02-04
EP0023323A3 EP0023323A3 (en) 1981-09-16
EP0023323B1 EP0023323B1 (fr) 1983-03-30

Family

ID=6076733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104205A Expired EP0023323B1 (fr) 1979-07-25 1980-07-17 Dispositif de commande pour transmission hydrostatique ou pompe à pistons

Country Status (8)

Country Link
US (1) US4370100A (fr)
EP (1) EP0023323B1 (fr)
JP (1) JPS5623584A (fr)
AR (1) AR220285A1 (fr)
BR (1) BR8004509A (fr)
DE (2) DE2930139A1 (fr)
RO (1) RO81656B (fr)
YU (1) YU168380A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000327A1 (de) * 2010-02-05 2011-08-11 Maier, Max, 71636 Pastakochgerät

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207961A1 (de) * 1982-01-14 1983-07-21 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum konstanthalten des produktes von foerderdruck und foerdervolumen einer verstellbaren pumpe
US4639195A (en) * 1984-01-19 1987-01-27 Linde Aktiengesellschaft Power control devices for hydrostatic pumps

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1267092B (de) * 1964-10-16 1968-04-25 Bosch Gmbh Robert Leistungsregler fuer Kolbenpumpen und -motoren
DE1653385C3 (de) * 1967-08-25 1980-07-24 Volvo Hydraulikfabrik Gmbh, 1000 Berlin Vorrichtung zum Konstanthalten des Produktes aus Druck und Hubvolumen bei einer Verdrängerpumpe
DE1811383A1 (de) * 1968-11-28 1970-06-18 Bosch Gmbh Robert Regel- und Steuereinrichtung fuer eine verstellbare Pumpe
DE1906983A1 (de) * 1969-02-07 1970-09-17 Bellows Valvair Kaemper Gmbh Vorrichtung zum Konstanthalten des Produktes aus Druck und Hubvolumen bei Verdraengerpumpen
DE2003774A1 (de) * 1970-01-23 1971-07-29 Bellows Valvair Deutschland Ni Vorrichtung zum Konstanthalten des Produktes aus Druck und Hubvolumen bei Verdraengerpumpen
US3669570A (en) * 1970-03-09 1972-06-13 Mannesmann Meer Ag Power regulation for fluid machines
GB1523588A (en) * 1974-11-18 1978-09-06 Massey Ferguson Services Nv Control systems for variable capacity hydraulic machines
DE2620692A1 (de) * 1976-05-07 1977-11-17 Volvo Hydraulikfabrik Gmbh Hydrostatischer wandler
DE2734933A1 (de) * 1977-08-03 1979-02-15 Linde Ag Regeleinrichtung fuer eine axialkolbenpumpe
DE2810062C2 (de) * 1978-03-08 1987-02-12 Linde Ag, 6200 Wiesbaden Regeleinrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010000327A1 (de) * 2010-02-05 2011-08-11 Maier, Max, 71636 Pastakochgerät

Also Published As

Publication number Publication date
RO81656B (ro) 1984-07-30
RO81656A (fr) 1984-05-23
US4370100A (en) 1983-01-25
EP0023323B1 (fr) 1983-03-30
DE2930139A1 (de) 1981-02-12
JPH0238827B2 (fr) 1990-09-03
DE2930139C2 (fr) 1988-03-24
BR8004509A (pt) 1981-02-03
AR220285A1 (es) 1980-10-15
JPS5623584A (en) 1981-03-05
YU168380A (en) 1983-02-28
EP0023323A3 (en) 1981-09-16
DE3062526D1 (en) 1983-05-05

Similar Documents

Publication Publication Date Title
DE2362350C2 (de) Hauptzylinder für zwei getrennte hydraulische Kreise
DE2751431C2 (de) Entlüftungsventil für Druckgießformen
DE2340663A1 (de) Servogesteuerte, hydraulische kraftuebertragungsvorrichtung
DE2639331A1 (de) Hydraulische oder pneumatische drei-wege-weiche mit hauptsteuerventil
EP1504191B1 (fr) Dispositif de reglage pour des machines a piston hydrostatiques
DE2704754A1 (de) Ventilanordnung
EP1126349A2 (fr) Vanne de réduction de pression
EP0023323B1 (fr) Dispositif de commande pour transmission hydrostatique ou pompe à pistons
EP0846904A1 (fr) Soupape à actionnement direct.
DE2930106C2 (fr)
DE2362250C2 (de) Hydraulische Hilfskraftlenkeinrichtung für Fahrzeuge
DE3542926C2 (fr)
DE2440800A1 (de) Stroemungssteuerventilvorrichtung
DE19903511A1 (de) Stellmotor mit einer Abschalteinrichtung
DE19757157C2 (de) Hydraulischer Linearantrieb
DE2046377A1 (de) Ventilanordnung
DE2621150C2 (fr)
EP0745042B1 (fr) Direction assistee pour vehicules a moteur
DE2717860B2 (de) Federbelastetes Sicherheitsventil
DE2359470C3 (de) Druckminderventil
DE2223881A1 (de) Servoschaltgeraet
DE1961908C3 (de) Einrichtung zum stufenlosen Einstellen des Hubvolumens bei Druckflüssigkeits-Schrägscheiben- Axialkolbenpumpen oder -motoren
DE1938135C3 (de) Vorrichtung zum stufenlosen Einstellen und Regeln des Hubvolumens von Hydromaschinen
DE1426606C3 (de) Hydraulische Steuereinrichtung
DE2041390C3 (de) Doppeltwirkender Arbeitszylinder

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

AK Designated contracting states

Designated state(s): DE FR GB SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB SE

17P Request for examination filed

Effective date: 19810806

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19830330

REF Corresponds to:

Ref document number: 3062526

Country of ref document: DE

Date of ref document: 19830505

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910705

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910721

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920717

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19920717

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19930331

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930727

Year of fee payment: 14

EUG Se: european patent has lapsed

Ref document number: 80104205.2

Effective date: 19850610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950401

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT