EP0965000A1 - Hydraulikaggregat - Google Patents
HydraulikaggregatInfo
- Publication number
- EP0965000A1 EP0965000A1 EP98906742A EP98906742A EP0965000A1 EP 0965000 A1 EP0965000 A1 EP 0965000A1 EP 98906742 A EP98906742 A EP 98906742A EP 98906742 A EP98906742 A EP 98906742A EP 0965000 A1 EP0965000 A1 EP 0965000A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- drive shaft
- hydraulic unit
- motor
- driven
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/004—Fluid pressure supply failure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/10—Special arrangements for operating the actuated device with or without using fluid pressure, e.g. for emergency use
Definitions
- the present invention relates to a hydraulic unit for supplying and controlling hydraulic cylinder-driven lifts, lifting platforms, tail lifts, gates, etc., with a hydraulic pump driven by a motor via a drive shaft, which is connected to a hydraulic medium supply and via switching valves to at least one output connection of the hydraulic unit.
- the invention aims to provide a hydraulic unit that can be operated in a makeshift manner in the event of a motor failure, for example to lower the lift, the lifting platform, etc. or to close the tail lift, the gate or the like. to enable.
- This goal is achieved in a hydraulic unit of the type mentioned in the introduction in that the drive shaft is provided directly or via a gear with a hand crank for emergency operation and the switching valves can be operated manually.
- the hydraulic unit can be operated by hand if the engine fails.
- a preferred embodiment of the invention is characterized in that the drive shaft is guided to the outside of the housing and the crank handle together with the gearbox is accessible End of the drive shaft is detachably attachable.
- the crank or the gearbox can be removed for normal operation, which reduces the operating weight and the operating dimensions of the unit.
- a one-way clutch between the motor and hand crank is preferably engaged in the drive shaft, which prevents the attached crank from turning when the engine is running.
- FIG. 1 shows a hydraulic circuit diagram of a hydraulic unit shown in FIG. 2 in a side view and in FIG. 3 in a top view (with the side wall broken open).
- the hydraulic unit is constructed as a completely self-sufficient unit in a box-shaped housing 1 and comprises a hydraulic pump 4 driven by an electric motor 2 via a drive shaft 3, which sucks hydraulic medium from a reservoir 6 via a filter 5 and via a shuttle valve 7 on two parallel branches which each comprise a switching valve 8 and a quantity control valve 9, made available under pressure at two output connections A, B.
- the feed lines a, b (not shown) of parallel hydraulic cylinders e.g. be connected to a tail lift.
- a return line 20 leading back to the supply 6 is connected, and furthermore a safety valve 21 and a measuring connection 22 are provided in the circuit for test purposes.
- the electric motor 2 is equipped with a magnetic start switch 10 and, like the switching valves 8, can be controlled via an electrical control 11 with push buttons 12 and a main switch 13.
- the drive shaft 3 is led out to the outside 14 of the housing 1.
- a gear 15 with a crank handle 16 for emergency actuation of the motor 2 is detachably attached to the externally accessible end of the drive shaft 3.
- the switching valves 8 are provided with hand levers 17 for manual emergency operation.
- the gear 15 is preferably a reduction gear with a gear ratio of crank: drive shaft of e.g. 3: 1 or 5: 1.
- a one-way clutch 18 can be switched into the drive shaft 3 between the motor and the hand crank 16 in order to prevent the hand crank 16 from rotating when the motor 2 is running.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Transmission Devices (AREA)
- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT39797A AT408681B (de) | 1997-03-07 | 1997-03-07 | Hydraulikaggregat |
AT39797 | 1997-03-07 | ||
PCT/AT1998/000056 WO1998040630A1 (de) | 1997-03-07 | 1998-03-06 | Hydraulikaggregat |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0965000A1 true EP0965000A1 (de) | 1999-12-22 |
Family
ID=3489532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98906742A Withdrawn EP0965000A1 (de) | 1997-03-07 | 1998-03-06 | Hydraulikaggregat |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0965000A1 (de) |
JP (1) | JP2001515568A (de) |
AT (1) | AT408681B (de) |
AU (1) | AU732748B2 (de) |
WO (1) | WO1998040630A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2843601B1 (fr) * | 2002-08-13 | 2005-03-04 | Rouby Ind | Dispositif de manoeuvre de mecanismes associes aux ecluses et de regulation de flux de rivieres |
DE102004046206A1 (de) * | 2004-09-22 | 2006-04-06 | Weber, Gisela | Zahnradpumpensystem mit hydraulischer Steuerung |
DE102004054831A1 (de) * | 2004-11-12 | 2006-05-24 | Gisela Weber | Zahnradpumpenaggregat |
JP2014064975A (ja) * | 2012-09-25 | 2014-04-17 | Hitachi Koki Co Ltd | 洗浄機 |
CN105526053A (zh) * | 2015-12-09 | 2016-04-27 | 沈阳飞研航空设备有限公司 | 燃油驱动装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2758745A1 (de) * | 1977-12-29 | 1979-07-12 | Werner Wagner | Pumpenantrieb |
IT219584Z2 (it) * | 1990-02-28 | 1993-04-15 | Iveco Fiat | Dispositivo per il comando elettrico o manuale di attuatori idraulici |
-
1997
- 1997-03-07 AT AT39797A patent/AT408681B/de not_active IP Right Cessation
-
1998
- 1998-03-06 AU AU62840/98A patent/AU732748B2/en not_active Ceased
- 1998-03-06 WO PCT/AT1998/000056 patent/WO1998040630A1/de not_active Application Discontinuation
- 1998-03-06 EP EP98906742A patent/EP0965000A1/de not_active Withdrawn
- 1998-03-06 JP JP53895798A patent/JP2001515568A/ja active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9840630A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2001515568A (ja) | 2001-09-18 |
AU732748B2 (en) | 2001-04-26 |
ATA39797A (de) | 2001-06-15 |
AU6284098A (en) | 1998-09-29 |
AT408681B (de) | 2002-02-25 |
WO1998040630A1 (de) | 1998-09-17 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19990907 |
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GRAG | Despatch of communication of intention to grant |
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17Q | First examination report despatched |
Effective date: 20010706 |
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GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20020205 |