CN201461564U - Electrical hydraulic control device - Google Patents
Electrical hydraulic control device Download PDFInfo
- Publication number
- CN201461564U CN201461564U CN2008201774207U CN200820177420U CN201461564U CN 201461564 U CN201461564 U CN 201461564U CN 2008201774207 U CN2008201774207 U CN 2008201774207U CN 200820177420 U CN200820177420 U CN 200820177420U CN 201461564 U CN201461564 U CN 201461564U
- Authority
- CN
- China
- Prior art keywords
- rotating speed
- regulator
- hydraulic control
- predetermined element
- control gear
- 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 - Lifetime
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 25
- 230000001276 controlling effect Effects 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 210000000635 valve cell Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2066—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using controlling means acting on the pressure source
-
- 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
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0676—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on flow sources
-
- 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
- F04B2201/00—Pump parameters
- F04B2201/12—Parameters of driving or driven means
- F04B2201/1201—Rotational speed of the axis
-
- 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
- F04B2203/00—Motor parameters
- F04B2203/02—Motor parameters of rotating electric motors
- F04B2203/0209—Rotational speed
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to an electrical hydraulic control device, which comprises an adjustable hydraulic pump, a speed-variable electric driver, a P/Q adjuster, a rotating speed presetting element and a driving controller, wherein the speed-variable electric driver is connected with the adjustable hydraulic pump, the P/Q adjuster can provide control adjustment values for the displacement volume of the hydraulic pump according to pressure value and/or volume flow rating, the rotating speed presetting element can provide rotating speed rating according to P/Q required cycle, the driving controller controls the motor of the electric driver according to the rotating speed rating, and at least the P/Q adjuster and the rotating speed presetting element are assembled in a common shell.
Description
Technical field
The utility model relates to a kind of electric hydraulic control gear that is used to control the hydraulic pressure user.
Background technique
The electric hydraulic transmission for example is used for requiring under the little situation of controlling mechanism size the occasion of big adjusting power and the machine parts of hydraulic regulation to require the accurately occasion of control.
Hydraulic injection molding machine user's controlling schemes has been proposed in claimant's EP 0 403 041 A2.In this scheme, metering pump directly is connected with the hydraulic pressure user by the mode of hydraulic coupling/stroke conversion.This metering pump is operated with the variable electrical servo drive unit of rotating speed.The speed regulation loop of this servo drive is placed on below this user's position regulation or pressure regulates.
When remaining closed pressure, under the very little situation of rotating speed, need high torque just, so that keep high pressure with metering pump.So the shortcoming of this drive scheme is, required power is big, that size is big thereby also be expensive servomotor, even this motor also can provide enough torques under the little situation of rotating speed.
EP 0 464 286 B2 have described the another kind of electric hydraulic transmission that injection machine is used.Different users for example controls by an adjusting pump and a valve cell piston cylinder unit that feeding is used with injection device and scroll bar drives usefulness used of matched moulds.This adjusting pump moves in Flow-rate adjustment or pressure controlled scope by the methods of knowing.It is adjusting pump-the see data sheet RD30630/06.06 of SYDFEE that Bosch Rexroth joint-stock company provides the trade mark that has corresponding controlling device.The transmission of aforementioned patent document description adds has a variable motor of rotating speed that is used to drive the adjusting pump, and regulating pump is that required quantity delivered is calculated in advance at required pressure medium of each stage of injection moulding process.To carry value to be converted into the tachometer value of motor then, and it will be stored in the process controller.Process controller is then controlled this motor with tachometer value given in advance.
The model utility content
The purpose of this utility model provides a kind of electric hydraulic control gear that is easy to control.
For this reason, the utility model proposes the electric hydraulic control gear that a kind of hydraulic pressure user controls usefulness, it comprises the oil hydraulic pump that displacement volume is adjustable and the variable electric driver of rotating speed of a coupling, a p/Q regulator that is used for providing for the displacement volume of this oil hydraulic pump a controlling value according to pressure nominal value and/or volume flowrate rating value, one-for example according to p/Q require the cycle-provide the predetermined element of rotating speed of a rotating speed rating value and one to control the drive controller of electrically driven (operated) motor according to the rotating speed rating value, wherein the predetermined element of p/Q regulator and rotating speed structurally is integrated in the common shell at least.According to a kind of preferred scheme, the interface of controlling to preposition machine is arranged in the above-mentioned common shell.
The device of like this having formed a compact structure, this installs not only an Auxiliary valves of the regulating element of controllable adjustable pump-be generally-but also can control electrically driven (operated) drive controller.With the comparison arranged apart of p/Q regulator and the predetermined element of rotating speed, the cable laying expense is a much less.Regulate whole signals of pump and electrically driven (operated) best of breed control needs with regard to commutative and consideration with expense seldom.This class signal for example comprises regulating and controlling value, the rotation speed n of force value (p), dispatch flow value (Q) or angle of oscillation signal (a) or the Auxiliary valves of regulating pump or regulates the required torque of pump.Can consider rating value and actual value.On preposition machine control opposite a unique interface can be set, and this interface is equivalent to the above-mentioned data sheet RD 30630/06.06 of the interface of conventional p/Q regulator-see as far as possible.
According to a favourable improvement of the present utility model, the predetermined elements combination of p/Q regulator and rotating speed is in a common electronic unit, especially in unique electronic circuit at least.Particularly under the situation of using the digital and electronic unit, the predetermined element of p/Q regulator and rotating speed is preferably in the unique microcontroller and realizes.The so just common control of using of two elements of access especially quickly and easily and regulate parameter.
According to a particularly preferred scheme of the present utility model, the valve pressure booster set of the Auxiliary valves of p/Q regulator, the predetermined element of rotating speed and regulating and controlling pump is combined in the common shell.Particularly advantageous scheme be said elements is integrated in the electronic unit that is arranged on the Auxiliary valves-be so-called vehicle electronic device (OBE).So just can make the electronic unit quantity of independent setting keep few as much as possible.
Also can obtain confers similar advantages if p/Q regulator and the predetermined element of rotating speed be integrated in electrically driven (operated) drive controller.
The predetermined element of p/Q regulator and rotating speed preferably has a common interface to preposition machine control example such as SPS (stored programme control) or PLC (logic control), this interface preferably is equivalent to the interface of conventional p/Q regulator basically, promptly transmits the interface of pressure nominal value and/or dispatch flow rating value.This interface can be simulation or digital, for example is designed to Field bus.Facilitate like this by preposition machine and control control gear of the present utility model.
Preferably basis is determined the rotating speed rating value by the pressure nominal value and/or the dispatch flow rating value of this interface transmission in the predetermined element of rotating speed.So see the adjusting pump of control gear one side of the present utility model from preposition machine control eye, and under the situation that does not change machine control, can reduce noise level on the other hand and save energy as the pressure adjusting/dispatch Flow-rate adjustment of a routine.
The control of preposition machine can provide the synchronizing signal that a for example given machine cycle that needs in case of necessity begins with seldom cost.Such synchronizing signal is useful the feelings subordinate who uses the described learning cycle of EP1236558B1 document for example.But such synchronizing signal also can for example be used for the p/Q regulator informs when machine control has reached the adjustment state of regulation.
Description of drawings
The utility model embodiment shown in conjunction with the accompanying drawings below comes detailed details of the present utility model.
Accompanying drawing is represented:
Fig. 1 has an adjusting pump, the variable electricity of rotating speed drives and the simplification circuti diagram of the hydraulic pressure user's of the control circuit of this electrically driven (operated) drive controller hydraulic control device, and this control circuit is integrated in the valve electric control device of Auxiliary valves;
A scheme of Fig. 2 Fig. 1 hydraulic control device, in this scheme, the regulator of regulating pump is integrated in the drive controller;
The modified model of Fig. 3 hydraulic control device illustrated in figures 1 and 2 is provided with on the structure independently electric control device here, and this installs both may command Auxiliary valvess, may command drive controller again.
Reference numerals list
1 hydraulic axis
3 hydraulic pressure users
5 hydraulic control devices
The control of 7 machines
The predetermined device of 8 rating value
10 motor
12 regulate pump
14 drive controllers
16 Auxiliary valvess
18 valve electric control device OBE
The 20p/Q regulator
The predetermined element of 22 rotating speeds
24 valve pressurized machines
26 interfaces
34 drive controllers
40 electronic regulating units
Embodiment
Fig. 1 shows an a kind of one hydraulic shaft 1 of fixing processing machine.One of them hydraulic control device 5 is to one or more hydraulic pressure user 3 supply pressure media.Then for example SPS or PLC control by given dispatch flow Q_ rating value of 8 couples of users of the predetermined element of rating value 3 or the pressure P _ rating value that provides hydraulic control device 5 by preposition machine control 7.
The Auxiliary valves 16 that the controlling mechanism of pump 12 is regulated in hydraulic operation is fixed on the shell of regulating pump 12.Auxiliary valves 16 is generally 3/2 stroke Proportional valve of eletromagnetic-operating.On the Proportional valve 16, to fix a valve electric control device 18 in case of necessity on the electromagnetic coil of Proportional valve 16 be so-called OBE (vehicle electronic device).In valve electric control device 18-promptly be fixed in the shell of a compactness on the valve 16-an integrated p/Q regulator 20, a predetermined element 22 of rotating speed and a valve pressurized machine 24.Shown in unique interface 26 between hydraulic control 5 and the machine control 7 be positioned at valve electric control device 18 next doors equally.
P/Q regulator 20 produces the regulated signal Ventil_soll (valve rating value) of Auxiliary valves 16 by rating value Q_ rating value and P_ rating value, the predetermined element 22 of valve pressurized machine 24. rotating speeds that this signal is transfused to operation Auxiliary valves 16 produces rotating speed rating value Drehzahl_soll by rating value Q_soll and P_soll, other parameters of possibility foundation for example had the pressure actual value of regulating pump when this rating value input drive controller 14. was determined regulated signal, the regulating and controlling value of dispatch flow actual value or angle of oscillation signal a or Auxiliary valves, the torque that rotating speed or adjusting pump need. for the purpose of clear, these parameters do not illustrate in the accompanying drawings. and these parameters-comprise all are provided in the valve electric control device 18 by valve electric control device 18 with the actual value-available very little expense of typical way input and at any time can be for element p/Q regulator 20 and predetermined element 22 uses of rotating speed, to reach ideal control or adjustment state. how to determine that the regulated signal Ventil_soll of Auxiliary valves 16 and rotating speed rating value Drehzahl_soll illustrate in EP 1236558B1.
In this embodiment, valve electric control device 18 is digital control circuits, and this circuit has a microcontroller, and wherein the predetermined element 22 of p/Q regulator 20 and rotating speed is carried out on this microcontroller as application program.This available multiple scheme is controlled the adjusting and the state of a control of valve electric control device 18, makes the system of hydraulic control device 6 mate machine performance best.In addition, the control that detects/adjusting parameter can provide whole application programs at any time.Can very carry out exchanges data-need not cabling easily at p/Q regulator 20 and the predetermined element 22 of rotating speed.
Another kind of selectable scheme is, p/Q regulator 20 also can be designed to analog regulator, and the predetermined element 22 of rotating speed is then realized with a very simple microcontroller or a programmable logic circuit (for example FPGA).In this case, p/Q regulator 20 be preferably on the plate with the predetermined element 22 of rotating speed or the plate that for example is connected with male contact on be placed in the shell of valve electric control device 18.
In conjunction with Fig. 2 second embodiment is described now.This embodiment and above-mentioned first embodiment's difference mainly is the layout of single components and parts.Its basic structure, working principle and described modification all can be continued to use example.
Second embodiment's valve electric control device is structurally fairly simple and mainly comprise valve pressurized machine 24.This valve pressurized machine can be installed on the Auxiliary valves 16 or separately as the setting of switch cubicle assembly.Compare with drive controller 14, drive controller 34 has enlarged function: it not only is used for the electronic control control of frequency variator FU, but also comprises p/Q regulator 20 and the predetermined element 22 of rotating speed.Shown in hydraulic control device 5 to unique interface 26 of preposition machine control 7 on drive controller 34 next doors.
P/Q regulator 20 forms the regulated value Ventil_soll of Auxiliary valves 16, and this value is transfused to valve pressurized machine 24.The predetermined element 22 of rotating speed then forms the predetermined value of rotating speed Drehzahl_soll, and this value is used to control frequency variator FU in drive controller 34.
The microcontroller that is provided with in due form in drive controller 34 is design like this, and it not only can carry out the control of frequency variator FU, but also can be used as p/Q regulator 20 and predetermined element 22 uses of rotating speed.If use a very simple microcontroller in drive controller 34, then p/Q regulator 20 is available as analog regulator and is integrated in the drive controller 34, promptly is integrated in its electronic circuit or in its shell.
Fig. 3 represents the 3rd embodiment, and this example also mainly is the layout of single components and parts with the difference of above-mentioned two examples, and its basic structure, working principle and described modification all can be continued to use example.
The 3rd embodiment's valve electric control device is simple in structure, mainly contains a valve pressurized machine 24.This valve pressurized machine can be installed on the Auxiliary valves 16 or separately as the setting of switch cubicle assembly.Valve control 14 also has simple structure, and as described in first embodiment, mainly comprises frequency variator FU and electric control device thereof.
The predetermined element 22 of p/Q regulator 20 and rotating speed then is placed in the independent electronic regulating unit 40.Unique interface of hydraulic control device 5 shown in electronic regulating unit 40 has to preposition machine control 7.P/Q regulator 20 forms the regulated value Ventil_soll of Auxiliary valves 16.This value is transfused in the valve pressurized machine 24.22 of the predetermined elements of rotating speed form the predetermined value of rotating speed Drehzahl_soll, and this value is transfused to drive controller 14.
Electronic regulating unit 40 is electronics modules that for example are installed in the switch cubicle, this device comprises a microcontroller, this microcontroller can be carried out the application program of p/Q regulator 20 and the predetermined element 22 of rotating speed. and another kind of scheme is, p/Q regulator 20 also can be designed to analog regulator, the predetermined element 22 of rotating speed is then realized with a very simple microcontroller or a programmable logic circuit (for example FPGA). in this case, p/Q regulator 20 be preferably on the plate with the predetermined element 22 of rotating speed or the plate that for example is connected with male contact on be placed in the shell of electronic regulating unit 40.
Electric hydraulic control gear of the present utility model comprise the electricity of the rotating speed adjustable of an adjustable oil hydraulic pump and a coupling drive, one be used for according to pressure nominal value and/or volume flowrate rating value for the displacement volume of this oil hydraulic pump provide the p/Q regulator, one of a controlling value-for example according to p/Q require the cycle-provide the predetermined element of rotating speed of a rotating speed rating value and one to control the drive controller of electrically driven (operated) motor according to the rotating speed rating value, wherein the predetermined element of p/Q regulator and rotating speed structurally is integrated in the common shell at least.
The device of like this having formed a compact structure, this installs not only an Auxiliary valves of the regulating element of controllable adjustable pump-be generally-but also can control electrically driven (operated) drive controller.
Claims (12)
1. hydraulic pressure user (3) controls the electric hydraulic control gear of usefulness, comprising:
The variable electric driver (10) of oil hydraulic pump (12), a driving oil hydraulic pump (12) rotating speed usefulness and that be attached thereto that displacement volume is adjustable,
A p/Q regulator (20), it is used for according to pressure nominal value and/or volume flowrate rating value is that the displacement volume of oil hydraulic pump (12) provides the regulating and controlling value,
A predetermined element of rotating speed (22), it provides the rotating speed rating value,
A drive controller (FU), it is according to the motor of rotating speed rating value control electric driver,
It is characterized by,
At least p/Q regulator (20) and the predetermined element of rotating speed (22) are assembled in the common shell.
2. by the electric hydraulic control gear of claim 1, it is characterized in that p/Q regulator (20) and the predetermined element of rotating speed (22) are combined in a common electronic unit (18 at least; 34; 40) in.
3. by the electric hydraulic control gear of claim 1 or 2, it is characterized by, p/Q regulator (20) and the predetermined element of rotating speed (22) are realized in a unique microcontroller at least.
4. by the electric hydraulic control gear of claim 1, it is characterized by, the valve pressurized machine (24) of the Auxiliary valves (16) of p/Q regulator (20), the predetermined element of rotating speed (22) and regulating and controlling pump (12) is combined in the common shell.
5. by the electric hydraulic control gear of claim 1, it is characterized by, p/Q regulator (20) and the predetermined element of rotating speed (22) are integrated in the drive controller (34) of electric driver (10).
6. press the electric hydraulic control gear of claim 1, it is characterized by, p/Q regulator (20) and the predetermined element of rotating speed (22) have oneself a shell jointly, and drive controller (14) and to regulate the valve pressurized machine (24) of Auxiliary valves (16) of pump (12) arranged apart with it respectively.
7. by the electric hydraulic control gear of claim 1, it is characterized by, the interface (26) of controlling (7) to preposition machine is arranged in the above-mentioned common shell.
8. by the electric hydraulic control gear of claim 7, it is characterized by, in the predetermined element of rotating speed (22), can determine the rotating speed rating value according to the pressure nominal value and/or the dispatch flow rating value that transmit by interface (26).
9. by the electric hydraulic control gear of claim 7 or 8, it is characterized by, interface (26) comprises the synchronizing signal of a machine cycle.
10. by the electric hydraulic control gear of claim 1, it is characterized in that the predetermined element of described rotating speed (22) provides the rotating speed rating value according to the p/Q requirement cycle.
11. the electric hydraulic control gear by claim 2 is characterized in that p/Q regulator (20) and the predetermined element of rotating speed (22) are combined in the unique electronic circuit at least.
12. electric hydraulic control gear by claim 4, it is characterized in that the valve pressurized machine (24) of the Auxiliary valves (16) of p/Q regulator (20), the predetermined element of rotating speed (22) and regulating and controlling pump (12) is combined in the electronic unit (18) that is arranged on the Auxiliary valves (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008019501.4A DE102008019501B4 (en) | 2008-04-17 | 2008-04-17 | Electrohydraulic control arrangement |
| DE102008019501.4 | 2008-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461564U true CN201461564U (en) | 2010-05-12 |
Family
ID=40940133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008201774207U Expired - Lifetime CN201461564U (en) | 2008-04-17 | 2008-10-30 | Electrical hydraulic control device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN201461564U (en) |
| DE (1) | DE102008019501B4 (en) |
| WO (1) | WO2009127397A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918281A (en) * | 2010-06-28 | 2013-02-06 | 沃尔沃建造设备有限公司 | Flow control system for a hydraulic pump of construction machinery |
| CN102971532A (en) * | 2010-07-14 | 2013-03-13 | 罗伯特·博世有限公司 | Hydraulic assembly |
| CN114294210A (en) * | 2021-12-23 | 2022-04-08 | 博世力士乐（常州）有限公司 | Multi-gear pump with delay gear switching function |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011014605A1 (en) | 2011-03-22 | 2012-09-27 | Robert Bosch Gmbh | Coating method, pile tube and apparatus for carrying out the method |
| DE102011119299A1 (en) * | 2011-11-24 | 2013-05-29 | Robert Bosch Gmbh | Method for operating a variable-speed variable-displacement pump |
| DE102012009136A1 (en) * | 2012-05-05 | 2013-11-07 | Robert Bosch Gmbh | Method for operating a fluid pump |
| DE102012023902B3 (en) | 2012-12-07 | 2014-03-20 | Arburg Gmbh + Co. Kg | Method for operating a hydraulic device with pump and servomotor and associated hydraulic device |
| GB2520349A (en) * | 2013-11-19 | 2015-05-20 | Ge Oil And Gas Uk Ltd | Hydraulic fluid pressure control |
| DE102014001981B4 (en) * | 2014-02-17 | 2023-04-27 | Robert Bosch Gmbh | Dynamic setpoint compensation for variable-speed pumps |
| DE102017222761A1 (en) | 2017-12-14 | 2019-06-19 | Robert Bosch Gmbh | Hydraulic supply device |
| DE102019118723A1 (en) * | 2019-07-10 | 2021-01-14 | Ipgate Ag | Pressure supply unit for a hydraulic system with at least one consumer circuit and with at least one rotary pump |
| CN114251256A (en) * | 2020-09-23 | 2022-03-29 | 博世力士乐（常州）有限公司 | Multi-gear pump with automatic gear control function |
| DE102021201895A1 (en) | 2021-03-01 | 2022-09-01 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method for operating a variable-speed electro-hydraulic pump, computing unit and variable-speed electro-hydraulic pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3919823C3 (en) | 1989-06-14 | 1998-04-09 | Mannesmann Ag | Injection molding machine with hydraulic consumers |
| US5052909A (en) | 1990-01-19 | 1991-10-01 | Cincinnati Milacron Inc. | Energy-conserving injection molding machine |
| US5307288A (en) * | 1991-06-07 | 1994-04-26 | Haines Lawrence A | Unitary fluid flow production and control system |
| DE4335403C1 (en) * | 1993-10-18 | 1994-12-15 | Karl Hehl | Hydraulic device |
| DE10007088A1 (en) * | 2000-02-16 | 2001-08-23 | Wilo Gmbh | Control device for pump and valve |
| DE10110398A1 (en) | 2001-03-03 | 2002-09-26 | Mannesmann Rexroth Ag | Method for regulating the pressure medium supply to a hydraulically operated actuator |
-
2008
- 2008-04-17 DE DE102008019501.4A patent/DE102008019501B4/en active Active
- 2008-10-30 CN CN2008201774207U patent/CN201461564U/en not_active Expired - Lifetime
-
2009
- 2009-04-15 WO PCT/EP2009/002743 patent/WO2009127397A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102918281A (en) * | 2010-06-28 | 2013-02-06 | 沃尔沃建造设备有限公司 | Flow control system for a hydraulic pump of construction machinery |
| CN102918281B (en) * | 2010-06-28 | 2015-07-29 | 沃尔沃建造设备有限公司 | For the flow system of the oil hydraulic pump of construction plant |
| CN102971532A (en) * | 2010-07-14 | 2013-03-13 | 罗伯特·博世有限公司 | Hydraulic assembly |
| CN114294210A (en) * | 2021-12-23 | 2022-04-08 | 博世力士乐（常州）有限公司 | Multi-gear pump with delay gear switching function |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008019501B4 (en) | 2019-03-21 |
| WO2009127397A1 (en) | 2009-10-22 |
| DE102008019501A1 (en) | 2009-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201461564U (en) | Electrical hydraulic control device | |
| CN101594977B (en) | Electro-hydraulic control arrangement | |
| CN100590307C (en) | Power controller and method for hydraulic power system | |
| CN107002717A (en) | Self contained energy-conserving hydraulic actuator system | |
| CN101910634B (en) | Method for controlling a hydrostatic drive | |
| JP4582981B2 (en) | Hydraulic power supply system | |
| CN102626979B (en) | Control system of injection molding machine | |
| CN204942122U (en) | Closed Hydraulic servo loading system, hydraulic pressure installation and loading equipemtn | |
| CN101691878A (en) | Hydraulic pump flow regulating device | |
| CN104989692B (en) | Compound control-type variable pump and control method thereof | |
| CN102606786A (en) | Electric-hydraulic valve as well as control device and control method thereof | |
| CN101463848A (en) | Engineering machinery control system, engineering machinery and engineering machinery control method | |
| CN101503998A (en) | Electrohydraulic integrating dual-displacement variable power control system | |
| CN104100508A (en) | Use of a motor-driven speed-variable hydraulic pump as a hydrostatic transmission | |
| KR20130113415A (en) | Method and device for operating a driven spindle in a machine tool | |
| CN102582054A (en) | Power system of large-sized servo injection molding machine | |
| CN1986195A (en) | Energy-saving servo injection molding machine | |
| CN201027714Y (en) | Hydraulic equipment controlled by servo motor | |
| CN105156376A (en) | Closed hydraulic servo loading system, hydraulic device and loading device | |
| CN111059091A (en) | Load-sensitive oil supply module, load-sensitive system and control method thereof | |
| CN106194910A (en) | A kind of press and hydraulic pressure closed-loop control system thereof and method | |
| CN205937322U (en) | Press and hydraulic pressure closed loop control system thereof | |
| CN102588649B (en) | Servo valve and zero compensation method for same | |
| CN201625891U (en) | Electronic brake starting system of numerical control machine | |
| CN101210580A (en) | Star-wheel synchronization hydraulic system for tunneling machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100512 |
|
| CX01 | Expiry of patent term |