CN102612430B - The fluid pressure drive device of the precharge with variable speed pump - Google Patents

The fluid pressure drive device of the precharge with variable speed pump Download PDF

Info

Publication number
CN102612430B
CN102612430B CN201080042771.7A CN201080042771A CN102612430B CN 102612430 B CN102612430 B CN 102612430B CN 201080042771 A CN201080042771 A CN 201080042771A CN 102612430 B CN102612430 B CN 102612430B
Authority
CN
China
Prior art keywords
master cylinder
switch
hydraulic press
cylinder
valve
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.)
Active
Application number
CN201080042771.7A
Other languages
Chinese (zh)
Other versions
CN102612430A (en
Inventor
S·施密特
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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
Family has litigation
Priority to DE102009043034.2 priority Critical
Priority to DE200910043034 priority patent/DE102009043034A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/EP2010/004578 priority patent/WO2011035828A1/en
Publication of CN102612430A publication Critical patent/CN102612430A/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43087109&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN102612430(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Publication of CN102612430B publication Critical patent/CN102612430B/en
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/024Systems essentially incorporating special features for controlling the speed or actuating force of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B30PRESSES
    • B30BPRESSES IN GENERAL
    • B30B15/00Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16Control arrangements for fluid-driven presses
    • B30B15/161Control arrangements for fluid-driven presses controlling the ram speed and ram pressure, e.g. fast approach speed at low pressure, low pressing speed at high pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20507Type of prime mover
    • F15B2211/20515Electric motor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20561Type of pump reversible
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/3056Assemblies of multiple valves
    • F15B2211/30565Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3058Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having additional valves for interconnecting the fluid chambers of a double-acting actuator, e.g. for regeneration mode or for floating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051Linear output members
    • F15B2211/7053Double-acting output members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7107Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being mechanically linked
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7114Multiple output members, e.g. multiple hydraulic motors or cylinders with direct connection between the chambers of different actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/775Combined control, e.g. control of speed and force for providing a high speed approach stroke with low force followed by a low speed working stroke with high force, e.g. for a hydraulic press
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78Control of multiple output members
    • F15B2211/782Concurrent control, e.g. synchronisation of two or more actuators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/785Compensation of the difference in flow rate in closed fluid circuits using differential actuators

Abstract

The present invention relates to a kind of fluid pressure drive device, it is with the hydraulic press (1) triggered by electric drive motor (2) variable speed ground, for implementing the master cylinder (4) of the motion process of power of setting up and the secondary cylinder (8) for implementing rapid movement process, it is characterized in that, at least one piston side for described master cylinder (4) applies to be set up on its compression fittings by external pressure source (13) and/or the hydraulic press (1) that mechanically triggered by drive motor (2), predetermined permanent compression, wherein said hydraulic press (1) is also connected to circulation conveying selected in the loop of closed loop wherein by pressure medium in the middle of hydraulic press (1), the stroke motion of described master cylinder (4) and secondary cylinder (8) is caused respectively according to one of two motion processes.

Description

The fluid pressure drive device of the precharge with variable speed pump
Technical field
The present invention relates generally to the fluid pressure drive device being preferred for forcing press, plastics machinery, bending machinery etc.
Such drive unit designs to realize at least following two motion processes: i.e. the working motion (hereinafter referred to as " pressure stroke ") of rapid translating motion (hereinafter referred to as " fast travel ") and the power of applying.
Background technology
From prior art, such as according to document EP0785861B1 known such, for the fluid pressure drive device of forcing press.The hydrostatic machine that this drive unit is driven by one, produce predetermined constant pressure in primary pressure pipe-line system and one are by hydraulic motor and be mechanically connected to the hydraulic transformer that the hydraulic pump on hydraulic motor forms and form.This preferred adjustable hydraulic motor is connected in primary pressure pipe-line system, and is therefore driven by hydrostatic machine.This same adjustable hydrostatic pump is that second pressure pipe-line system applies hydraulic coupling, and pressure cylinder is installed in described second pressure pipe-line system, and the cylinder space of described pressure cylinder is connected on two hydraulic joints of hydraulic pump by valve.
Finally, these two cylinder spaces of pressure cylinder are connected with primary pressure pipe-line system by pressure pipeline, to apply this primary pressure (being equivalent to the precharge pressure of pressure cylinder requirement) in advance to pressure piston.
But be difficult to technically confirm: the design of the layout with the hydraulic transformer of said structure is converted into practice.The number of the consumption of its structure and the hydraulic part of demand and each other harmonious economy as this reduced this known fluid pressure drive device, thus it is not widely accepted in professional domain.
Summary of the invention
In view of this prior art, task of the present invention is, provides a kind of such fluid pressure drive device, and it can realize with the hydraulic part number reduced, and the energy ezpenditure that is however in operation is lower.
This task is solved by fluid pressure drive device according to the present invention.Other favourable design of the present invention provides hereinafter.
Therefore, the present invention relates to a kind of fluid pressure drive device, its with one by electric drive motor variable speed trigger hydraulic press, for implementing to set up the master cylinder of the motion process of power and the secondary cylinder for implementing rapid movement process.According to the present invention, this master cylinder by be preferably applied on two piston areas, further the preferred predetermined permanent compression produced by external pressure source pressurize in advance or compress, the circulation conveying that wherein hydraulic press is selected in being linked into wherein closed loop by pressure medium in the middle of this hydraulic press, according to one of two motion processes cause master cylinder and secondary cylinder stroke motion.
By applying pressure in advance to this drive unit, preferably by means of the compression volume that the hydraulic press be also responsible for this motion process or reduced significantly by external pressure source will be carried, the wherein precharge pressure of drive unit and the combination as the variable speed pump (hydraulic press) for the precharge mechanism of two cylinders and the electric servo operation of hydraulic drive mechanism, achieves fluid pressure drive device that have short cycle, that save energy economically.
Accompanying drawing explanation
It is following that with reference to accompanying drawing, according to the preferred embodiment of the invention, the present invention will be described in detail.
Accompanying drawing illustrates:
Fig. 1 is by the fluid pressure drive device of the preferred embodiment of the present invention one schematic diagram of (under precharge pressure state) under halted state;
Fig. 2 is the schematic diagram be in by the fluid pressure drive device of Fig. 1 in " fast travel " state downwards;
Fig. 3 is the schematic diagram be in by the fluid pressure drive device of Fig. 1 in " pressure stroke " state;
Fig. 4 is the schematic diagram being in the recompression stage by the fluid pressure drive device of Fig. 1; And
Fig. 5 is the schematic diagram be in upwards by the fluid pressure drive device of Fig. 1 in " fast travel " (backhaul stage) state.
Detailed description of the invention
As what can find out from whole accompanying drawing, have the pressure medium source of hydraulic press 1 form that the variable speed as pump drives according to fluid pressure drive device of the present invention, described hydraulic press is mechanically connected to motor 2 for this reason.Hydraulic press 1 is connected on the pressure pipeline system of the hydraulic circuit forming closed loop on two compression fittings.
Specifically, the first connecting pipe 3 is connected on the first compression fittings of hydraulic press 1, and described first connecting pipe directly leads the pressure chamber 4a of piston side of master cylinder 4.Second pipe 5 is connected on the second compression fittings of hydraulic press 1, and described second pipe is by the pressure chamber 4b(hereinafter referred to as annular compartment of valve 6 with the piston rod side of master cylinder 4) be connected.Valve 6 present construction is the 3/2 reversing switch valve that reversal valve and being especially configured to has first position of the switch, second switch position and the 3rd position of the switch, only allows a hydraulic fluid to flow from the annular compartment 4b of master cylinder 4 towards hydraulic press 1 in described first position of the switch; In described second switch position, hydraulic fluid can flow towards both direction; In the 3rd position of the switch, second pipe 5 is fully closed.
Between hydraulic press 1 and reversing switch valve 6 above-mentioned, 5 branch roads 7 are installed in second pipe, the pressure chamber 8a of the piston rod side of described branch road guiding pair cylinder 8.At this, the diameter of the piston 8b of secondary cylinder 8 is less than the diameter of the piston 4c of master cylinder 4 significantly, thus for the comparable volume flow of hydraulic fluid, the stroke of secondary cylinder 8 is greater than the stroke of master cylinder 4.In addition, cylinder 4, the annular side of 8 has the total area identical with the piston side of master cylinder 4 in ideal conditions.
Finally arrange bypass duct or short circuit pipeline 9, the piston chamber 4a of master cylinder 4 and its annular compartment 4b couples together by described bypass duct or short circuit pipeline.Be connected in this bypass duct 9 in the middle of short circuit valve 10, described short circuit valve present construction is reversing switch valve and is preferably configured as 2/2 reversing switch valve.In first position of the switch of this short circuit valve 10, bypass duct 9 complete (that is in the two directions) is opened, in second switch position, wherein only allow a fluid to be flow to the piston chamber 4a of master cylinder 4 from annular compartment 4b by bypass duct 9.
In specific embodiment of the present invention, there is the fluid pressure drive device dress of said structure in a press.The piston rod 4d of the master cylinder 4 and piston rod 8c of secondary cylinder 8 is connected with the depression bar 11 supported movably for this reason, and described depression bar is fixed with drift 12 or stamping tool.
Also have a lot for avoiding the safety device declined unintentionally of overvoltage condition or depression bar 11 according to hydraulic system of the present invention in principle, but they show in the drawings no longer in detail.Like this, the annular compartment 8a of secondary cylinder 8 can be connected in series by two, centre valve (Sitzventil) (not shown) monitored guarantees safety.The decline of drift 12 above can be prevented thus reliably.In addition, can guarantee to prevent the plunger shaft 4a of master cylinder 4 from by mistake applying pressure.This by shown reversal valve 6,10 itself or can be undertaken by the release monitored of the electric drive motor 2 of hydraulic press 1.
In order to the leakage loss in bucking-out system, pressure accumlator 13 is connected on the first pressure pipeline 3 by valve 14 between hydraulic press 1 and the piston chamber 4a of master cylinder 4.This valve 14 is provided by reversal valve, the 2/2 reversing switch valve preferably with first position of the switch and second switch position, and the connection between described first position of the switch peripheral pressure source 13 and the first pressure pipeline 3 discharges completely; In described second switch position, only allow liquid to flow into the first pressure pipeline 3 from external pressure source 13.
In the duty according to fluid pressure drive device of the present invention, at least the pressure chamber 4a of the piston side of master cylinder 4 is stably applied in the hydraulic coupling of predetermined a, constant (particularly modulated) by pressure medium source.At this, the circulation of pressure medium in the pressure circuit of closed loop that move through of two cylinders 4,8 carries the hydraulic press 1 driven by variable speed to control.
For these two cylinders 4, the control of the motion process of 8, conclusive is from corresponding annular compartment 4b, the injection of the hydraulic press 1 that the pressure medium of 8a is driven by variable speed or discharge, wherein the whole motion process of forcing press impulse stroke can by means of valve 6 under these two cylinders participate in, 10 and (constant) pump of driving of variable speed control.
Can describe with reference to the accompanying drawings as follows according to the working method of fluid pressure drive device of the present invention:
According to Fig. 1 when fluid pressure drive device stops (in the retrieving position of depression bar 11), reversing switch valve 6 is in the position of the switch wherein only allowing fluid to flow out from the annular compartment 4b of master cylinder 4; And short circuit valve 10 is in the position of the switch that wherein bypass duct 9 is opened completely.In addition, the electric drive motor 2 of hydraulic press 1 is closed.
In this (static) state, the weight of depression bar 11 by the internal pressure support of the piston chamber 8a of secondary cylinder 8, and is in pressure balance by short circuit valve 10 in the annular compartment and piston chamber 4a, 4b of master cylinder 4.
In order to enter downward fast travel state from this (static) state, being switched to complete closed position according to Fig. 2 valve 6 and driving hydraulic press 1.Pressure medium can only to be drawn out of by pipeline 5 from the annular compartment 8a of secondary cylinder 8 and to be admitted to the piston chamber 4a of main piston 4 thus.Master cylinder chamber 4a simultaneously, the pressure balance between 4b is kept by the short circuit valve 10 still always opened wide completely.
Because secondary cylinder 8 is less than master cylinder 4, and pump 1 only works to the volume of the annular side of secondary cylinder 8, even if so when hydraulic press 1 is designed to low capacity, the moving downward of depression bar 11 (and later also having recovery movement) also can be carried out with relatively high speed under predetermined volume flow.In addition, can also speed be improved further by (permission) momentary overload of electric drive motor 2 and improve later pressure further.
Once drift 12 has arrived workpiece 15 to be processed, short circuit valve 10 has just been switched to the position of the switch only allowing to flow out from master cylinder 4 annular compartment 4b wherein; And valve 6 is switched to and allows fluid to flow to the position of the switch of hydraulic press 1 from annular compartment 4b wherein.From now on, according under this state of Fig. 3, because master cylinder chamber 4a, no longer being occurred by the pressure balance of short circuit valve 10 between 4b, the internal pressure of annular compartment 4b is also reduced by hydraulic press 1, otherwise the internal pressure of the piston chamber 4a of master cylinder 4 is kept to improve in other words.That is, replace the significant compression of the piston side of master cylinder 4, actual pressure is produced by the release of the annular side of cylinder 4,8.Because master cylinder chamber 4a, the pressure balance between 4b no longer exists, and the pressure movement of the continuation of master cylinder 4 also adopts when keeping identical volume flow than speed obviously less relative to descending motion during in fast travel before.
At the end of pressure process, valve 6 is switched in the position of the switch according to Fig. 4, and after this liquid of connecting pipe 5 inside flows towards both direction, that is, can flow out from the annular compartment 4b of master cylinder 4 and can flow to the annular compartment 4b of master cylinder 4.Pressure balance between the annular compartment 8a of master cylinder chamber 4a, 4b and secondary cylinder 8 is in this case realized by connecting pipe 5 and branch road 7, wherein can be recovered energy by electric drive motor 2 simultaneously.
Finally be recoverable to depression bar 11, method is: as shown in Figure 5, and valve 6 is switched to the position of the switch only allowing to flow out from the annular space 4a of master cylinder 4 wherein; And short circuit valve 10 is switched to bypass duct 9(wherein in the two directions) position of the switch of opening completely.
If drive hydraulic press 1 in this case, to make pressure medium from the plunger shaft 4a sucking-off of master cylinder 4, then the pressure medium of sucking-off is at two master cylinder chamber 4a, and be pressed towards the annular compartment 8a of secondary cylinder 8 during complete pressure balance between 4b, it makes depression bar 11 again regain with higher speed.
In above-mentioned fluid pressure drive device, hydraulic press 1 can be connected on the valve block (not illustrating further) of duty valve containing drive unit safety valve in other words with flange.Can also install thereon for running pump motor.This unit can also be arranged on hydraulic cylinder, provides a kind of driving shaft compact especially thus.
List of numerals
1 hydraulic press
2 servomotors (variable speed)
3 first connecting pipes
4 master cylinders
4a piston chamber
4b annular compartment
4c master cylinder piston
4d piston rod
5 second pressure pipelines
6 valves
7 branch roads
8 secondary cylinders
8a annular compartment
The secondary cylinder piston of 8b
8c piston rod
9 bypass ducts
10 short circuit valves
11 depression bars
12 drifts
13 pressure accumlators
14 valves
15 workpiece.

Claims (8)

1. fluid pressure drive device, it is with the constant hydraulic press (1) triggered by electric drive motor (2) variable speed ground, for implementing the master cylinder (4) of the motion process of power of setting up and the secondary cylinder (8) for implementing rapid movement process, it is characterized in that, at least one piston side for described master cylinder (4) directly applies to be set up on its compression fittings by external pressure source (13) and/or the hydraulic press (1) that mechanically triggered by electric drive motor (2), predetermined permanent compression, wherein said hydraulic press (1) is also connected to circulation conveying selected in the loop of closed loop wherein by pressure medium in the middle of hydraulic press (1), the stroke motion of described master cylinder (4) and secondary cylinder (8) is caused respectively according to one of two motion processes.
2. according to fluid pressure drive device according to claim 1, it is characterized in that, it is upper and be connected on the annular compartment (8a) of the piston rod side of described secondary cylinder (8) that the other compression fittings of described hydraulic press (1) is connected to the annular compartment (4b) of the piston rod side of described master cylinder (4).
3. according to fluid pressure drive device according to claim 2, it is characterized in that, in the middle of in the connecting pipe (5) of the closed loop between described hydraulic press (1) and the annular compartment (4b) of described master cylinder (4), connect valve (6).
4. according to fluid pressure drive device according to claim 3, it is characterized in that, described valve (6) is reversing switch valve.
5. according to the described fluid pressure drive device of claim 3, it is characterized in that, described valve (6) is the 3/2 reversing switch valve with first position of the switch, second switch position and the 3rd position of the switch, only allows a hydraulic fluid to flow to described hydraulic press (1) from the annular compartment (4b) of described master cylinder (4) in described first position of the switch; In described second switch position, hydraulic fluid can flow towards both direction; Described in described 3rd position of the switch, connecting pipe (5) is blocked completely.
6. according to the fluid pressure drive device described in claim 3 or 5, it is characterized in that the bypass duct in the loop of the closed loop connecting the piston chamber (4a) of described master cylinder (4) and the annular compartment (4b) of described master cylinder (4), and be connected in described bypass duct in the middle of short circuit valve (10).
7. according to the fluid pressure drive device of claim 6, it is characterized in that, described short circuit valve (10) is 2/2 reversing switch valve, described short circuit valve opens described bypass duct (9) completely in first position of the switch, and in second switch position, only allow fluid to be flow to the piston chamber (4a) of described master cylinder (4) from the annular compartment (4b) of described master cylinder (4) by bypass duct (9).
8. according to fluid pressure drive device according to claim 1, it is characterized in that, described master cylinder (4) and the piston rod side of described secondary cylinder (8) have the total area identical with the piston side of described master cylinder (4).
CN201080042771.7A 2009-09-25 2010-07-27 The fluid pressure drive device of the precharge with variable speed pump Active CN102612430B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE102009043034.2 2009-09-25
DE200910043034 DE102009043034A1 (en) 2009-09-25 2009-09-25 Prestressed hydraulic drive with variable speed pump
PCT/EP2010/004578 WO2011035828A1 (en) 2009-09-25 2010-07-27 Prestressed hydraulic drive with variable-speed pump

Publications (2)

Publication Number Publication Date
CN102612430A CN102612430A (en) 2012-07-25
CN102612430B true CN102612430B (en) 2016-04-27

Family

ID=43087109

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201080042771.7A Active CN102612430B (en) 2009-09-25 2010-07-27 The fluid pressure drive device of the precharge with variable speed pump

Country Status (5)

Country Link
EP (1) EP2480405B1 (en)
CN (1) CN102612430B (en)
DE (1) DE102009043034A1 (en)
TW (1) TWI519717B (en)
WO (1) WO2011035828A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2622496T3 (en) 2010-11-11 2017-07-06 Robert Bosch Gmbh Hydraulic shaft
DE102012020581A1 (en) 2012-10-22 2014-04-24 Robert Bosch Gmbh Hydraulic circuit for a hydraulic axis and a hydraulic axis
DE102013227053A1 (en) 2013-12-23 2015-06-25 Robert Bosch Gmbh Hydraulic axis
EP2952750B1 (en) 2014-06-04 2018-09-05 MOOG GmbH Hydraulic system
DE102014226236A1 (en) * 2014-09-29 2016-03-31 Robert Bosch Gmbh Hydraulic circuit and machine with a hydraulic circuit
DE102014219734A1 (en) * 2014-09-30 2016-03-31 Robert Bosch Gmbh Hydraulic circuit for supplying pressure to a differential cylinder
EP3109488B1 (en) 2015-06-25 2017-12-13 MOOG GmbH Safe-to-operate hydraulic drive
DE102015011209B4 (en) * 2015-08-26 2021-03-18 Horst Baltschun Hydraulic press
DE102015225436A1 (en) 2015-12-16 2017-06-22 Robert Bosch Gmbh Valve block, cylinder, compact axle and compact axle construction kit
DE102016113882A1 (en) * 2016-07-27 2018-02-01 Moog Gmbh Electro-hydrostatic drive system
DE102017202131A1 (en) 2017-02-10 2018-08-16 Siemens Aktiengesellschaft Piezo-hydraulic actuator and method for operating such a piezohydraulic actuator
CN110831750A (en) * 2017-08-01 2020-02-21 穆格股份有限公司 Device for controlling switching of hydraulic cylinder
CN108590602B (en) * 2018-04-14 2020-11-06 嘉兴市国龙石油化工股份有限公司 Automatic pressurizing device for oil exploitation equipment
DE102018120000A1 (en) * 2018-08-16 2020-02-20 Moog Gmbh Electrohydrostatic actuator system with suction tank
DE102019105449A1 (en) * 2019-03-04 2020-09-10 Wacker Neuson Linz Gmbh Linear drive with closed hydraulic circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924671A (en) * 1986-11-25 1990-05-15 Mannesmann Rexroth Gmbh Controlled series high-pressure intensifiers for hydraulic press cylinded circuit
US5460084A (en) * 1993-03-16 1995-10-24 Maschinenfabrik Mueller-Weingarten Ag Method for controlling the drive of a hydraulic press
US5852933A (en) * 1994-10-13 1998-12-29 Mannesmann Rexroth Gmbh Hydraulic drives system for a press
US6209322B1 (en) * 1996-11-13 2001-04-03 Komatsu Ltd. Pressurized fluid supply system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH029988A (en) * 1988-06-28 1990-01-12 Daikin Ind Ltd Oil return device for hydraulic machine
JP2006316800A (en) * 2005-05-10 2006-11-24 Osaka Jack Seisakusho:Kk Jack device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924671A (en) * 1986-11-25 1990-05-15 Mannesmann Rexroth Gmbh Controlled series high-pressure intensifiers for hydraulic press cylinded circuit
US5460084A (en) * 1993-03-16 1995-10-24 Maschinenfabrik Mueller-Weingarten Ag Method for controlling the drive of a hydraulic press
US5852933A (en) * 1994-10-13 1998-12-29 Mannesmann Rexroth Gmbh Hydraulic drives system for a press
US6209322B1 (en) * 1996-11-13 2001-04-03 Komatsu Ltd. Pressurized fluid supply system

Also Published As

Publication number Publication date
TWI519717B (en) 2016-02-01
TW201115034A (en) 2011-05-01
WO2011035828A1 (en) 2011-03-31
CN102612430A (en) 2012-07-25
EP2480405B1 (en) 2013-06-19
DE102009043034A1 (en) 2011-03-31
EP2480405A1 (en) 2012-08-01

Similar Documents

Publication Publication Date Title
EP2136085A2 (en) Hydraulic pressure intensifiers
CN201730780U (en) Hydraulically driven difunctional multi-cylinder slurry pump
CN103047208B (en) Load-sensitive electro-hydraulic proportional multi-way valve
WO2014017475A1 (en) Hydraulic drive circuit
KR101311009B1 (en) Hydraulic pressure suply unit and elctro-hydraulic actuating unit
CN105443478B (en) Fluid pressure drive device with fast travel and load stroke
JP2005530618A (en) Hydraulic controller for scrap shear drive hydraulic system etc.
CN101253335B (en) Oil circuit for controlling a double-action hydraulic drive cylinder
CN103790874B (en) Valveless Hydrauservo System and controlling method thereof
TWI519717B (en) Vorgespannter hydraulischer antrieb mit drehzahlvariabler pumpe
CN100549431C (en) Fluid pressure valve device
CN101782095B (en) Differential energy recovery device and method for seawater desalination system
CN103615443A (en) Energy recovery hydraulic system and engineering machine
CN101230920A (en) Method of operating a dct hydraulic power control system as well as dct hydraulic power control system
CN102549273B (en) Electrofluidic control device
CN104033154B (en) The TBM propulsion hydraulic system of double mode switching
CN201769389U (en) Hydraulic press
JP4266595B2 (en) Single motor injection screw drive hybrid actuator
CN103270318A (en) Energy recycling system for a construction apparatus
CN103775401B (en) Hydraulic circuit and hydraulic axis for hydraulic axis
CN101348171B (en) Rotor brake for a rotary-wing aircraft
KR20030032042A (en) Controller for a hydraulic press and method for the operation thereof
US9689407B2 (en) Hydraulic drive with rapid stroke and load stroke
CN101363459B (en) Hydro-pneumatic pressure boost device and method for operation
CN102278124A (en) Energy-saving hydraulic shield propulsion system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant