EP0023323B1 - Regeleinrichtung für ein hydrostatisches Getriebe oder eine Kolbenpumpe - Google Patents
Regeleinrichtung für ein hydrostatisches Getriebe oder eine Kolbenpumpe Download PDFInfo
- Publication number
- EP0023323B1 EP0023323B1 EP80104205A EP80104205A EP0023323B1 EP 0023323 B1 EP0023323 B1 EP 0023323B1 EP 80104205 A EP80104205 A EP 80104205A EP 80104205 A EP80104205 A EP 80104205A EP 0023323 B1 EP0023323 B1 EP 0023323B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- bore
- spring
- pressure
- lever
- 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
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.
- a lever which transmits the force generated by the control pressure to a control spring and is designed as a straight-line lever which extends approximately parallel to the longitudinal extension of the actuating piston, both the control valve and the Control spring are arranged in transverse bores in the actuating piston.
- a control and regulating device for a hydrostatic piston pump is also known, in which the lever is designed as an angle lever.
- 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 required in the known device in that two pistons are provided which lie opposite one another and are connected to one another and which act directly against one 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-A 501 835).
- 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 in the actuating piston is arranged such that an adjustment of the bias of the spring is possible without removing the actuating piston to have to.
- the lever is designed as an angle lever and that the spring is arranged in the actuating piston, against which part of the angle lever which extends approximately transversely to the longitudinal axis of the actuating piston rests and is designed as a compression spring whose longitudinal axis runs parallel to the longitudinal axis of 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 adjustment can easily be made from the front of the control piston without having to remove the control piston.
- 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 slide. 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 is screwed tightly into the part 2.
- a cylinder bore is provided, in which the control pressure piston 21 can be moved. This is supported against a support body 22 which has a groove 23, thus on both end faces this support body 22 always has the same pressure.
- 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.
- 26 Against the second arm 26 of the angle lever 25, 26 is 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 threaded into a threaded part 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 into 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 another recess connects the channel 43 to 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 counteracts 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 outweighs the associated lever arm, the product of the force of the spring 28 times the associated one 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.
- Pressure medium thus flows from the channel 15 through the bores 16 and 17 and the bore 8, the bores 39, the bore 40 and the bore 34, the bore 41 and the bores 43 and 44 and the space 45 in front of the large end face of the actuating piston 11 , 12. Since the same pressure acts in front of the large end face of the actuating piston 11, 12 as in front of the small end face of the actuating piston part 11, the actuating piston moves to the bottom in the drawing. This reduces the lever arm on which the force of the control piston 21 acts, until the force of the spring 28 is able to push back the control piston 21, with the result that the control slide body 47 under the action of the contact spring 62 in the position shown in the drawing returns and blocks the connection between the bores 41 and 43. The actuating piston has now reached a new equilibrium position.
- the spring plate body 37 comes to rest against the end face of the stop screw 49 and presses the spring 35 together with further movement of the actuating piston 11, 12, 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 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 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)
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 EP0023323A2 (de) | 1981-02-04 |
EP0023323A3 EP0023323A3 (en) | 1981-09-16 |
EP0023323B1 true EP0023323B1 (de) | 1983-03-30 |
Family
ID=6076733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80104205A Expired EP0023323B1 (de) | 1979-07-25 | 1980-07-17 | Regeleinrichtung für ein hydrostatisches Getriebe oder eine Kolbenpumpe |
Country Status (8)
Country | Link |
---|---|
US (1) | US4370100A (pt) |
EP (1) | EP0023323B1 (pt) |
JP (1) | JPS5623584A (pt) |
AR (1) | AR220285A1 (pt) |
BR (1) | BR8004509A (pt) |
DE (2) | DE2930139A1 (pt) |
RO (1) | RO81656B (pt) |
YU (1) | YU168380A (pt) |
Families Citing this family (3)
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 |
DE102010000327A1 (de) * | 2010-02-05 | 2011-08-11 | Maier, Max, 71636 | Pastakochgerät |
Family Cites Families (10)
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 |
-
1979
- 1979-07-25 DE DE19792930139 patent/DE2930139A1/de active Granted
-
1980
- 1980-06-27 YU YU01683/80A patent/YU168380A/xx unknown
- 1980-07-17 DE DE8080104205T patent/DE3062526D1/de not_active Expired
- 1980-07-17 EP EP80104205A patent/EP0023323B1/de not_active Expired
- 1980-07-18 BR BR8004509A patent/BR8004509A/pt unknown
- 1980-07-24 RO RO101801A patent/RO81656B/ro unknown
- 1980-07-24 US US06/171,895 patent/US4370100A/en not_active Expired - Lifetime
- 1980-07-24 AR AR281905A patent/AR220285A1/es active
- 1980-07-25 JP JP10144780A patent/JPS5623584A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0023323A3 (en) | 1981-09-16 |
DE2930139C2 (pt) | 1988-03-24 |
EP0023323A2 (de) | 1981-02-04 |
US4370100A (en) | 1983-01-25 |
DE2930139A1 (de) | 1981-02-12 |
RO81656A (ro) | 1984-05-23 |
JPS5623584A (en) | 1981-03-05 |
JPH0238827B2 (pt) | 1990-09-03 |
BR8004509A (pt) | 1981-02-03 |
AR220285A1 (es) | 1980-10-15 |
YU168380A (en) | 1983-02-28 |
DE3062526D1 (en) | 1983-05-05 |
RO81656B (ro) | 1984-07-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2362350C2 (de) | Hauptzylinder für zwei getrennte hydraulische Kreise | |
DE2751431C2 (de) | Entlüftungsventil für Druckgießformen | |
DE2340663A1 (de) | Servogesteuerte, hydraulische kraftuebertragungsvorrichtung | |
DE69806320T2 (de) | Druckflüssigkeitsbetriebener Schlagmeschanismus | |
DE69206113T2 (de) | Regelungssystem für Flüssigkeitspumpen mit veränderlichem Hub. | |
DE69212307T2 (de) | Regelungssystem für Flüssigkeitspumpen mit veränderlichem Hub | |
DE19902107B4 (de) | Verdrängungssteuervorrichtung für eine verstellbare Hydraulikeinheit | |
EP1504191B1 (de) | Verstellvorrichtung für hydrostatische kolbenmaschinen | |
DE2513013A1 (de) | Hydraulisches wegeventil zur steuerung des druckmittelflusses zu und von einem doppelseitig beaufschlagbaren hydraulikzylinder | |
EP0023323B1 (de) | Regeleinrichtung für ein hydrostatisches Getriebe oder eine Kolbenpumpe | |
EP1126349A2 (de) | Druckreduzierventil | |
DE3002172A1 (de) | Anordnung eines prioritaetsventils | |
DE2930106C2 (pt) | ||
DE2440800A1 (de) | Stroemungssteuerventilvorrichtung | |
DE2639331A1 (de) | Hydraulische oder pneumatische drei-wege-weiche mit hauptsteuerventil | |
DE4202631C2 (de) | Axialkolbenmaschine, insbesondere Hydropumpe der Schiefscheibenbauart oder der Schrägachsenbauart, deren Durchsatzvolumen durch eine Einstellvorrichtung einstellbar ist | |
DE19903511A1 (de) | Stellmotor mit einer Abschalteinrichtung | |
DE3635625A1 (de) | Vorsteuergeraet | |
DE2223881A1 (de) | Servoschaltgeraet | |
EP0745042B1 (de) | Hilfskraftlenkung für kraftfahrzeuge | |
DE1938135C3 (de) | Vorrichtung zum stufenlosen Einstellen und Regeln des Hubvolumens von Hydromaschinen | |
DE1961908C3 (de) | Einrichtung zum stufenlosen Einstellen des Hubvolumens bei Druckflüssigkeits-Schrägscheiben- Axialkolbenpumpen oder -motoren | |
DE2101727A1 (de) | Vorrichtung zur Regelung des Hubs hubveranderhcher Hydraulikpumpen | |
DE2810062A1 (de) | Regeleinrichtung | |
DE1426606C3 (de) | Hydraulische Steuereinrichtung |
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 |