CN102364120A - Hydraulic control system for piston type energy accumulator - Google Patents
Hydraulic control system for piston type energy accumulator Download PDFInfo
- Publication number
- CN102364120A CN102364120A CN2011101833269A CN201110183326A CN102364120A CN 102364120 A CN102364120 A CN 102364120A CN 2011101833269 A CN2011101833269 A CN 2011101833269A CN 201110183326 A CN201110183326 A CN 201110183326A CN 102364120 A CN102364120 A CN 102364120A
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- piston accumulator
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/16—Control arrangements for fluid-driven presses
- B30B15/163—Control arrangements for fluid-driven presses for accumulator-driven presses
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
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- 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
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/205—Accumulator cushioning means using gas
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- 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
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/775—Combined 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
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8606—Control during or prevention of abnormal conditions the abnormal condition being a shock
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- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/86—Control during or prevention of abnormal conditions
- F15B2211/8616—Control during or prevention of abnormal conditions the abnormal condition being noise or vibration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention discloses a hydraulic control system for a piston type energy accumulator, which comprises a main cylinder, a liquid filling device, a return cylinder, a hydraulic system spliced valve body and a piston type energy accumulator station, wherein the main cylinder is used for driving a sliding block to descend; the liquid filling device is connected with the main cylinder and is used for filling liquid into the main cylinder; the return cylinder is used for driving the sliding block to ascend; the hydraulic system spliced valve body is respectively communicated with the main cylinder and the return cylinder and is used for controlling the flow and the pressure required by the main cylinder and the return cylinder; the piston type energy accumulator station is used for storing hydraulic energy required by the system, is connected with the hydraulic system spliced valve body and comprises the piston type energy accumulator communicated with the hydraulic system spliced valve body through a pipeline; the piston type energy accumulator is connected with a gas cylinder group through a pipeline; and a one-way valve is arranged on a pipeline by which the gas cylinder group is communicated with the piston type energy accumulator. The hydraulic control system has the advantages that no hydraulic impact or obvious vibration is generated during high-and-low speed switching of a pressing machine, no shake, impact, noise or the like is generated during pressure relief of the main cylinder, the integral power of the pressing machine is greatly reduced, and the adjustability is stronger; hydraulic elements of the system, such as the motor, an oil pump, a valve bank and the like are greatly reduced; and the number of electrical control modules is decreased.
Description
Technical field
The present invention relates to a kind of hydraulic system, particularly relate to a kind of piston accumulator controlled hydraulic system that is used on the composite material automobile product forming hydraulic press.
Background technique
Automotive industry had not only obtained develop rapidly in recent years as one of several big important industry of the economic develop rapidly of China on industry size, and on industrial technology upgrades, had also obtained very big breakthrough; But continuous upgrading along with industry development; Automotive industry is faced with the energy, public hazards and safety three big problems; Wherein the energy is the most outstanding; When words such as " energy-saving and emission-reduction, exhausted, the new-energy automobiles of global energy " is more and more frequently mentioned by masses, the energy-conservation key problem that has become automobile industry development.Energy-conservation at first is the Economy that improves automotive fuel, is one of important measures and reduce automotive dead weight; According to the interrelated data introduction, automotive dead weight alleviates 100Kg, the 100km that goes, but fuel-economizing 0.3kg; Weight reduction 10%, fuel economy benefit improves 10%.Reduce automotive dead weight, except in vehicle structure design, working hard, important means be exactly on automobile a large amount of same with thermosetting compound material (sheet molding compound) that adopt be wherein a kind of.
Existing domestic in the designing and developing of composite material press; Basically be that (high-pressure service pump is as power source in the pump control hydraulic system; All kinds of directional control valves and pressure valve are as control unit; The working medium of the required flow of executive component oil cylinder, required pressure offers oil cylinder in the cycle that mould pressing process requires the most at last, makes the required tonnage of its mould pressing process goods); But pump control hydraulic system installed power is bigger, and power consumption is serious, and adjustability is not high.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of employing accumulator discharge hydraulic pressure can, reduce the overall power of press and the stronger piston accumulator controlled hydraulic system of adjustability.
The technological scheme that the present invention adopted is: a kind of piston accumulator controlled hydraulic system; Comprise: be used for the master cylinder that driving sliding block descends; Link to each other to the charging device of master cylinder topping up with master cylinder; Be used for the kicker cylinder that driving sliding block rises; Also being provided with is connected with master cylinder and kicker cylinder respectively is used to control the hydraulic system plug-in mounting valve body of master cylinder and required flow of kicker cylinder and pressure, and is provided with the piston accumulator station that is used for the required hydraulic pressure ability of stocking system, and described piston accumulator station connects hydraulic system plug-in mounting valve body.
Described piston accumulator station includes the piston accumulator that is connected with hydraulic system plug-in mounting valve body through pipeline; Described piston accumulator connects the gas cylinder group through pipeline, and the pipeline that described gas cylinder group is connected with piston accumulator is provided with one-way valve.
Described gas cylinder group is arranged in parallel by a plurality of gas cylinders and forms, and on each gas cylinder and pipeline that piston accumulator is connected, a joint door is set all.
Be provided with two groups of gas cylinder groups in the described piston accumulator station.
Described hydraulic system plug-in mounting valve body includes: the first high frequency sound proportional servo valve that links to each other with master cylinder respectively through pipeline; The described first high frequency sound proportional servo valve connects the piston accumulator in the piston accumulator station through first plug-in unit, and second plug-in unit connects piston accumulator through a valve piston accumulator is played the safety protection effect; Said the 4th plug-in unit connection master cylinder plays the safety protection effect to the pressure of master cylinder; The 5th plug-in unit connects fuel tank; For the automatically controlled pressure release of piston accumulator and drain the oil; The said second high frequency sound proportional servo valve connects kicker cylinder, also connects the piston accumulator in the piston accumulator station through the 3rd plug-in unit; Described the 4th plug-in unit connects the first pressure overflow cover plate; Described the 5th plug-in unit connects first Solenoid ball valve through second cover plate; Described first plug-in unit connects first Solenoid ball valve through the 3rd cover plate; Described the 3rd plug-in unit connects second Solenoid ball valve through the 4th cover plate, and described second plug-in unit connects the 5th pressure overflow cover plate, and described second plug-in unit also connects the 6th plug-in unit; Described the 6th plug-in unit connects the 3rd Solenoid ball valve through the 6th cover plate, also is provided with the Solenoid ball valve that is connected with fuel tank and kicker cylinder respectively.
The pipeline that the described first high frequency sound proportional servo valve is communicated with master cylinder is provided with pressure measuring tie-in and pressure transducer.
Piston accumulator controlled hydraulic system of the present invention adopts accumulator to discharge the hydraulic pressure ability, through big latus rectum proportional servo valve closed-loop adjustment, under the situation that satisfies main parameters requirements such as press pressure, speed, accomplishes manufacturing processs such as compacting, backhaul.Press of the present invention switches no hydraulic pressure soon, at a slow speed to be impacted, and does not have obviously and shakes, and shockproof during the master cylinder pressure release, impact, noise etc. reduce the overall power of press greatly, and adjustability are stronger.The present invention compares with conventional pumps control system design, and hydraulic pressure components and parts such as system motor, oil pump, valve group significantly reduce, and the electrical control module number reduces; Hydraulic system cartridge valve group centralized control in addition, the pipeline compact, overall appearance is generous, and power consumption obviously reduces, and has reduced the cost of long-term operation.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention.
1. hydraulic system plug-in mounting valve body; The 1-1 first high frequency sound proportional servo valve; 1-2 the 4th plug-in unit; 1-3 first cover plate; The 1-4 pressure transducer; The 1-5 Solenoid ball valve; 1-6 first electromagnetic direction valve; 1-7 first safety overflow valve; The 1-8 pressure measuring tie-in; 1-9 first Solenoid ball valve; 1-10 sutaining valve group; The 1-11 second high frequency sound proportional servo valve; 1-12 second electromagnetic direction valve; 1-13 the 3rd electromagnetic direction valve; 1-14 first plug-in unit; 1-15 second plug-in unit; 1-16 the 3rd plug-in unit; 1-17 the 6th cover plate; 1-18 the 5th plug-in unit; 1-19 second cover plate; 1-20 the 3rd cover plate; 1-21 the 4th cover plate; 1-22 the 5th cover plate; 1-23 second safety overflow valve; 1-24 the 6th plug-in unit;
2. piston accumulator station; The 2-1 piston accumulator; The 2-2 gas cylinder; The 2-3 one-way valve; 2-4 saves door; The 2-5 pressure gauge; 2-6 gas cylinder group;
3. master cylinder; 3-1 master cylinder plunger piston bar; The 3-2 master cylinder body;
4. charging device; The 4-1 surge-tank; The 4-2 liquid-filling valve; The 4-3 level meter; The 4-4 air-strainer;
5. kicker cylinder; 3-1 kicker cylinder plunger rod; 3-2 kicker cylinder cylinder body;
6. slide block; 7. patrix; 8 counterdies.
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify piston accumulator controlled hydraulic system of the present invention and how to realize.
As shown in Figure 1; Piston accumulator controlled hydraulic system of the present invention; Comprise: be used for the master cylinder 3 that driving sliding block 6 descends; Link to each other to the charging device 4 of master cylinder 3 topping ups with master cylinder 3, be used for the kicker cylinder 5 that driving sliding block 6 rises, also being provided with is connected with master cylinder 3 and kicker cylinder 5 respectively is used to control the hydraulic system plug-in mounting valve body 1 of master cylinder 3 and kicker cylinder 5 required flows and pressure; And being provided with the piston accumulator station 2 that is used for the required hydraulic pressure ability of stocking system, described piston accumulator station 2 connects hydraulic system plug-in mounting valve bodies 1.
Described piston accumulator station 2 includes the piston accumulator 2-1 that is connected with hydraulic system plug-in mounting valve body 1 through pipeline; Described piston accumulator 2-1 connects gas cylinder group 2-6 through pipeline, and the pipeline that described gas cylinder group 2-6 is connected with piston accumulator 2-1 is provided with one-way valve 2-3.Described gas cylinder group 2-6 is arranged in parallel by a plurality of gas cylinder 2-2 and forms, and on each gas cylinder 2-2 and pipeline that piston accumulator 2-1 is connected, a joint door 2-4 is set all.Be provided with two groups of gas cylinder group 2-6 in the described piston accumulator station 2.
Described hydraulic system plug-in mounting valve body 1 includes: the first high frequency sound proportional servo valve 1-1 that links to each other with master cylinder 3 respectively through pipeline; The described first high frequency sound proportional servo valve 1-1 connects the piston accumulator 2-1 in the piston accumulator station 2 through the first plug-in unit 1-14, and the second plug-in unit 1-15 connects piston accumulator 2-1 through a valve piston accumulator is played the safety protection effect; The pressure that said the 4th plug-in unit 1-2 connects 3 pairs of master cylinders 3 of master cylinder plays the safety protection effect; The 5th plug-in unit 1-18 connects fuel tank; For the automatically controlled pressure release of piston accumulator 2-1 and drain the oil; The said second high frequency sound proportional servo valve 1-11 connects kicker cylinder, also connects the piston accumulator 2-1 in the piston accumulator station 2 through the 3rd plug-in unit 1-16; Described the 4th plug-in unit 1-2 connects the first pressure overflow cover plate 1-3; Described the 5th plug-in unit 1-18 connects the first Solenoid ball valve 1-9 through the second cover plate 1-19; The described first plug-in unit 1-14 connects the first Solenoid ball valve 1-6 through the 3rd cover plate 1-20; Described the 3rd plug-in unit 1-16 connects the second Solenoid ball valve 1-12 through the 4th cover plate 1-21; The described second plug-in unit 1-15 connects the 5th pressure overflow cover plate 1-22; The described second plug-in unit 1-15 also connects the 6th plug-in unit 1-24, and described the 6th plug-in unit 1-24 connects the 3rd Solenoid ball valve 1-13 through the 6th cover plate 1-17, also is provided with the Solenoid ball valve 1-10 that is connected with fuel tank and kicker cylinder 5 respectively.The pipeline that the described first high frequency sound proportional servo valve 1-1 is communicated with master cylinder 3 is provided with pressure measuring tie-in 1-8 and pressure transducer 1-4.
Piston accumulator controlled hydraulic system of the present invention; Replace high pressure variable displacement pump output high pressure oil with piston accumulator; In hydraulic system, designed flow and pressure that big latus rectum proportional servo valve closed-loop adjustment gets into executive component oil cylinder working medium, made it accurately reach setting speed and pressure parameter; Its medium velocity and pressure controling precision require as follows:
A. pressure controling precision reaches ± 0.15MPa
B. velocity control accuracy: 5% of setting speed
C. pressure surge during pressurize:＜± 0.3MPa
Adopt accumulator to discharge the hydraulic pressure ability,, under the situation that satisfies main parameters requirements such as press pressure, speed, accomplish manufacturing processs such as compacting, backhaul through big latus rectum proportional servo valve closed-loop adjustment; And guarantee that in action such as " precompressed, pressurize, hold pressure, quick return " series of process press switches no hydraulic pressure soon, at a slow speed to be impacted, and does not have obviously and shakes, shockproof during the master cylinder pressure release, impact, noise etc.Adopt the present invention, the press installed power is reduced to 1/3 of former pump control system, but speed, pressure techniques parameter but obviously improve; Significantly shorten pressure rising time; Both satisfy the speed regulation scope of client's broad, shortened pressing cycle, improved the performance after the moulding of product again; And reduce the overall power of press greatly, and adjustability is stronger, and hydraulic shock is little.
Claims (6)
1. piston accumulator controlled hydraulic system; Comprise: be used for the master cylinder (3) that driving sliding block (6) descends; Link to each other to the charging device (4) of master cylinder (3) topping up with master cylinder (3); Be used for the kicker cylinder (5) that driving sliding block (6) rises, it is characterized in that also being provided with is connected with master cylinder (3) and kicker cylinder (5) respectively is used to control the hydraulic system plug-in mounting valve body (1) of master cylinder (3) and required flow of kicker cylinder (5) and pressure; And being provided with the piston accumulator station (2) that is used for the required hydraulic pressure ability of stocking system, described piston accumulator station (2) connects hydraulic system plug-in mounting valve body (1).
2. piston accumulator controlled hydraulic system according to claim 1; It is characterized in that: described piston accumulator station (2) includes the piston accumulator (2-1) that is connected with hydraulic system plug-in mounting valve body (1) through pipeline; Described piston accumulator (2-1) connects gas cylinder group (2-6) through pipeline, and the pipeline that described gas cylinder group (2-6) is connected with piston accumulator (2-1) is provided with one-way valve (2-3).
3. piston accumulator controlled hydraulic system according to claim 2; It is characterized in that: described gas cylinder group (2-6) is arranged in parallel by a plurality of gas cylinders (2-2) and forms, and on each gas cylinder (2-2) and pipeline that piston accumulator (2-1) is connected, a joint door (2-4) is set all.
4. piston accumulator controlled hydraulic system according to claim 2 is characterized in that: be provided with two groups of gas cylinder groups (2-6) in the described piston accumulator station (2).
5. piston accumulator controlled hydraulic system according to claim 1; It is characterized in that: described hydraulic system plug-in mounting valve body (1) includes: the first high frequency sound proportional servo valve (1-1) that links to each other with master cylinder (3) respectively through pipeline; The described first high frequency sound proportional servo valve (1-1) connects the piston accumulator (2-1) in the piston accumulator station (2) through first plug-in unit (1-14), and second plug-in unit (1-15) connects piston accumulator (2-1) through a valve piston accumulator is played the safety protection effect; Said the 4th plug-in unit (1-2) connection master cylinder (3) plays the safety protection effect to the pressure of master cylinder (3); The 5th plug-in unit (1-18) connects fuel tank; For the automatically controlled pressure release of piston accumulator (2-1) and drain the oil; The said second high frequency sound proportional servo valve (1-11) connects kicker cylinder, also connects the piston accumulator (2-1) in the piston accumulator station (2) through the 3rd plug-in unit (1-16); Described the 4th plug-in unit (1-2) connects the first pressure overflow cover plate (1-3); Described the 5th plug-in unit (1-18) connects first Solenoid ball valve (1-9) through second cover plate (1-19); Described first plug-in unit (1-14) connects first Solenoid ball valve (1-6) through the 3rd cover plate (1-20); Described the 3rd plug-in unit (1-16) connects second Solenoid ball valve (1-12) through the 4th cover plate (1-21); Described second plug-in unit (1-15) connects the 5th pressure overflow cover plate (1-22); Described second plug-in unit (1-15) also connects the 6th plug-in unit (1-24), and described the 6th plug-in unit (1-24) connects the 3rd Solenoid ball valve (1-13) through the 6th cover plate (1-17), also is provided with the Solenoid ball valve (1-10) that is connected with fuel tank and kicker cylinder (5) respectively.
6. piston accumulator controlled hydraulic system according to claim 5 is characterized in that: the pipeline that the described first high frequency sound proportional servo valve (1-1) is communicated with master cylinder (3) is provided with pressure measuring tie-in (1-8) and pressure transducer (1-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101833269A CN102364120A (en) | 2011-06-30 | 2011-06-30 | Hydraulic control system for piston type energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101833269A CN102364120A (en) | 2011-06-30 | 2011-06-30 | Hydraulic control system for piston type energy accumulator |
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| CN102364120A true CN102364120A (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101833269A Pending CN102364120A (en) | 2011-06-30 | 2011-06-30 | Hydraulic control system for piston type energy accumulator |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699249A (en) * | 2012-05-28 | 2012-10-03 | 天津市天锻压力机有限公司 | Quick forging press control system with energy accumulator and control method of quick forging press control system |
| CN103061716A (en) * | 2012-12-21 | 2013-04-24 | 无锡市科优液压设备制造有限公司 | Energy-saving hydraulic pumping unit |
| EP2846993A1 (en) * | 2012-05-10 | 2015-03-18 | Dieffenbacher GmbH Maschinen- und Anlagenbau | Method and device for adaptively controlling a hydraulic press |
| CN105221497A (en) * | 2015-10-27 | 2016-01-06 | 天津市天锻压力机有限公司 | High speed pre-shaping hydraulic press hydraulic control system |
| CN106761570A (en) * | 2015-11-24 | 2017-05-31 | 中国石油化工股份有限公司 | Hydraulic pumping unit intelligent leveling weighing apparatus device and method |
| CN107269616A (en) * | 2017-08-11 | 2017-10-20 | 南通市腾达锻压机床厂 | A kind of cavity of resorption of high speed hydraulic press is drained the oil the application system of high frequency sound valve |
| WO2018014522A1 (en) * | 2016-07-22 | 2018-01-25 | 中聚信海洋工程装备有限公司 | Hydraulic fast forging unit |
| CN108708889A (en) * | 2018-07-23 | 2018-10-26 | 武汉理工大学 | A kind of energy-saving low fast-response mixing control servo-hydraulic machine hydraulic system that shakes |
| IT201700068317A1 (en) * | 2017-06-20 | 2018-12-20 | Hydromec S R L | AUTOMATIC ADJUSTMENT SYSTEM FOR LOADING PRESSURE ACCUMULATORS, AND ITS ADJUSTMENT METHOD, FOR HYDRAULIC PRESSES |
| CN111805962A (en) * | 2020-07-08 | 2020-10-23 | 天津市天锻压力机有限公司 | Control system and control method for special servo hydraulic cushion of hydraulic machine |
| CN112539201A (en) * | 2019-09-23 | 2021-03-23 | 上海伦联机电设备有限公司 | High-frequency force loading electro-hydraulic system |
| CN114165487A (en) * | 2021-12-16 | 2022-03-11 | 合肥合锻智能制造股份有限公司 | Hydraulic control system for composite material |
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| DE626344C (en) * | 1932-12-10 | 1936-02-24 | Vladimir Vltavsky | Hydraulic press |
| DE19528558A1 (en) * | 1995-08-03 | 1997-02-06 | Dieffenbacher Gmbh Maschf | Procedure for operating hydraulic press - piston chamber of actuating unit connected to hydraulic accumulator so that volume of piston chamber during descending stroke of press slide is transferred to accumulator |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20120229 |