CN105545848A - Hydraulic control system for precisely synchronizing two side cylinders of tube hydroforming hydraulic machine - Google Patents
Hydraulic control system for precisely synchronizing two side cylinders of tube hydroforming hydraulic machine Download PDFInfo
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- CN105545848A CN105545848A CN201610012752.9A CN201610012752A CN105545848A CN 105545848 A CN105545848 A CN 105545848A CN 201610012752 A CN201610012752 A CN 201610012752A CN 105545848 A CN105545848 A CN 105545848A
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/22—Synchronisation of the movement of two or more servomotors
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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
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic control system for precisely synchronizing two side cylinders of a tube hydroforming hydraulic machine. The hydraulic control system comprises a proportional pressure-flow composite valve, a one-way valve I, a three-position four-way electromagnetic reversing valve I, a one-way throttling valve, a pressure reducing valve, a two-position electromagnetic reversing valve I, a one-way valve II, a one-way valve III, an overflow valve I, an overflow valve II, a hydraulic control one-way valve I, a hydraulic control one-way valve II, a three-position four-way electromagnetic reversing valve II, a three-position four-way electromagnetic reversing valve III, a two-position electromagnetic reversing valve II, a synchronization cylinder, a right side cylinder, a left side cylinder, an electromotor, a one-way quantification oil pump and an oil tank, wherein the synchronization cylinder is provided with two rod cavities and one rodless cavity; each of the left side cylinder and the right side cylinder is provided with a rod cavity and a rodless cavity; oil lines of the left side cylinder and the right side cylinder are respectively provided with a pressure sensor I and a pressure sensor II. The hydraulic control system is characterized in that the working principle is as follows: a, the left side cylinder and the right side cylinder are synchronously pushed forwards; b, the left side cylinder and the right side cylinder are synchronously pushed backwards; c, the left side cylinder is separately pushed forwards; d, the left side cylinder is separately pushed backwards; e, the right side cylinder is separately pushed forwards; and f, the right side cylinder is separately pushed backwards.
Description
Technical field
The present invention relates to a kind of hydraulic control system, be specifically related to a kind of forming high pressure in pipe hydraulic press both sides cylinder precision synchronous hydraulic control system.
Background technique
Forming high pressure in pipe technique is one of 13 kinds of extraordinary advanced moulding process in the world; Have energy-saving and environmental protection, efficient, the feature such as to be widely used; Be applicable to aerospace industry, marine settings industry, automotive industry, the complex pipes such as industry abnormity variable cross section pipe fitting, many siphunculus, change axis pipe such as household electric appliances are shaped.The typical process flow of forming high pressure in pipe is: be fixed on by bed die on internal high pressure forming hydraulic press workbench, patrix is fixed on master cylinder, after tubing blank is put into counterdie, the dynamic descending driven mold matched moulds of beam slab, after this left and right side cylinder advances and sprays water-based emulsion liquid, drain base inner air tube and sealed mold, system injects the water base emulsified liquid of ultrahigh pressure in base pipe subsequently, meanwhile left and right side cylinder continues propelling extrusion pipe arrangement supplementary material, and part forming goes out the shape identical with mould inside the most at last.After keeping pressure a period of time, die sinking pressure release, left and right side cylinder, master cylinder rollback, take out finished product.
In above-mentioned technological process, left and right sides cylinder synchronously advances most important, and its synchronization accuracy directly determines the forming quality of product.Inner high voltage equipment manufacturers many employings elaborate servo-control system ensures the synchronization accuracy of two side cylinders both at home and abroad at present, although the method precision is high, dynamic response is fast, and system complex, involves great expense.Be not extra high part for required precision, the synchronous propulsion system that can meet again performance requirement while of being equipped with simple, cheap, simple to operate is necessary.
Summary of the invention
The invention discloses a kind of forming high pressure in pipe hydraulic press both sides cylinder precision synchronous hydraulic control system, in order to solve the deficiencies in the prior art.
For solving the problem, technical solution of the present invention is:
A kind of forming high pressure in pipe hydraulic press both sides cylinder precision synchronous hydraulic control system, comprise composite valve with proportional pressure flow, one-way valve one, three-position four-way electromagnetic directional valve one, one-way throttle valve, reduction valve, two solenoid directional control valves one, one-way valve two, one-way valve three, relief valve one, relief valve two, Pilot operated check valve one, Pilot operated check valve two, three-position four-way electromagnetic directional valve two, three-position four-way electromagnetic directional valve three, two solenoid directional control valves two, synchronized cylinder, right side cylinder, left side cylinder, motor, unidirectional quantitative oil pump, fuel tank, its synchronized cylinder has two rod chambers and a rodless cavity, on the left of it, cylinder and right side cylinder respectively have a rod chamber and a rodless cavity, on the left of it cylinder and right side cylinder oil circuit on be respectively arranged with pressure transducer one and pressure transducer two.
Its working principle is as follows:
A, left side cylinder and right side cylinder synchronously advance: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve one obtains electric, motor obtains electric startup, unidirectional quantitative oil pump coaxial with it starts oil suction, hydraulic oil in fuel tank enters routine pressure flow combination valve, then three-position four-way electromagnetic directional valve one is flowed into, enter after one-way throttle valve in the rodless cavity of synchronized cylinder, promote synchronized cylinder piston to move to rod chamber direction, equal-volume high pressure oil in two rod chambers is discharged, two-way high pressure oil is respectively by Pilot operated check valve one, Pilot operated check valve two enters in the rodless cavity of left side cylinder and right side cylinder, promote left side cylinder, the piston rod synchronous linear motion of right side cylinder, promotion load is done work.
B, left side cylinder and right side cylinder synchronously retreat: the electromagnet of composite valve with proportional pressure flow, three-position four-way electromagnetic directional valve one and two solenoid directional control valves two obtains electric.Hydraulic oil is through composite valve with proportional pressure flow, enter three-position four-way electromagnetic directional valve one, then the rod chamber of left side cylinder and right side cylinder is entered into, promote both sides cylinder to move to rodless cavity, meanwhile, hydraulic oil is through two four-way electromagnetic reversing valves two, oil circuit control opens Pilot operated check valve one and Pilot operated check valve two, the hydraulic oil of the rodless cavity of left side cylinder and right side cylinder is made to be back in the rod chamber of synchronized cylinder by Pilot operated check valve one and Pilot operated check valve two smoothly, the piston of synchronized cylinder is to rodless cavity rollback, rodless cavity hydraulic oil passes through one-way throttle valve, fuel tank got back to by one-way valve one.
C, left side cylinder advance separately: the electromagnetism of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve two obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve two through composite valve with proportional pressure flow, hydraulic oil enters left side cylinder rodless cavity and promotes piston to rod chamber straight line motion, external load acting, left side cylinder rod chamber hydraulic oil flows to through top oil outlet. filler opening on the left of three-position four-way electromagnetic directional valve two, by getting back to fuel tank after solenoid directional control valve, so far left side cylinder advances separately action to complete smoothly.
D, left side cylinder retreat separately: the electromagnetism of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve two obtains electric.Hydraulic oil enters two-way three-position four-way electromagnetic directional valve two through composite valve with proportional pressure flow, hydraulic oil enters right side cylinder rod chamber and promotes piston to rodless cavity straight line motion, piston cylinder rollback, rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve two of left side cylinder, by getting back to fuel tank after solenoid directional control valve, so far cylinder independent backward movement in left side completes smoothly.
E, right side cylinder advance separately: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve three obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve three through composite valve with proportional pressure flow, the rodless cavity that hydraulic oil enters right side cylinder promotes piston to rod chamber straight line motion, external load acting, right side cylinder rod chamber hydraulic oil flows to filler opening on the left of three-position four-way electromagnetic directional valve three through top oil outlet, by getting back to fuel tank after solenoid directional control valve, so far right side cylinder advances separately action to complete smoothly.
F, right side cylinder retreat separately: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve three obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve three through composite valve with proportional pressure flow, the rod chamber that hydraulic oil enters right side cylinder promotes piston to rodless cavity straight line motion, piston rod rollback, right side cylinder rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve three, by getting back to fuel tank after solenoid directional control valve, so far cylinder independent backward movement in right side completes smoothly.
The invention has the beneficial effects as follows: accurately can control left and right side axial advance cylinder and synchronously advance feed supplement, without the need to special hydraulic control loop or the appliance controling element real-time servo feedback control of complex precise.Meanwhile, this system also can control left and right side cylinder and advance separately, meets usage requirement, reduces cost.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
In figure: 1. composite valve with proportional pressure flow, 2. one-way valve one, 3. three-position four-way electromagnetic directional valve one, 4. one-way throttle valve, 5. reduction valve, 6. two solenoid directional control valves one, 7. one-way valve two, 8. one-way valve three, 9. relief valve one, 10. relief valve two, 11. Pilot operated check valves one, 12. Pilot operated check valve 2 13. three-position four-way electromagnetic directional valve two, 14. three-position four-way electromagnetic directional valve three, 15. two solenoid directional control valves two, 16. synchronized cylinders, cylinder on the right side of in the of 17., cylinder on the left of in the of 18., 19. pressure transducers one, 20. pressure transducers two, 21. motor, 22. unidirectional quantitative oil pumps, 23. oil absorption filter screens, 24. coolers and pressure gauge, 25. fuel tanks.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
See accompanying drawing 1, the present invention includes composite valve with proportional pressure flow 1, one-way valve 1, three-position four-way electromagnetic directional valve 1, one-way throttle valve 4, reduction valve 5, two solenoid directional control valves 1, one-way valve 27, one-way valve 38, relief valve 1, relief valve 2 10, Pilot operated check valve 1, Pilot operated check valve 2 12, three-position four-way electromagnetic directional valve 2 13, three-position four-way electromagnetic directional valve 3 14, two solenoid directional control valves 2 15, synchronized cylinder 16, right side cylinder 17, left side cylinder 18, motor 21, unidirectional quantitative oil pump 22, fuel tank 25, its synchronized cylinder 16 has two rod chambers and a rodless cavity, on the left of it, cylinder 18 and right side cylinder 19 respectively have a rod chamber and a rodless cavity, on the left of it cylinder 18 and right side cylinder 17 oil circuit on be respectively arranged with pressure transducer 1 and pressure transducer 2 20.
Its working principle is as follows:
A, left side cylinder 18 and right side cylinder 17 synchronously advance: the electromagnet of composite valve with proportional pressure flow 1 and three-position four-way electromagnetic directional valve 1 obtains electric, motor 21 obtains electric startup, unidirectional quantitative oil pump 22 coaxial with it starts oil suction, hydraulic oil in fuel tank 25 enters routine pressure flow combination valve 1, then three-position four-way electromagnetic directional valve 1 is flowed into, the rodless cavity of synchronized cylinder 16 is entered after one-way throttle valve 4) in, promote synchronized cylinder piston to move to rod chamber direction, the equal-volume high pressure oil in two rod chambers is discharged.Two-way high pressure oil enters in the rodless cavity of left side cylinder 18 and right side cylinder 19 respectively by Pilot operated check valve 1, Pilot operated check valve 2 12, promote the piston rod synchronous linear motion of left side cylinder 18, right side cylinder 17, promotion load is done work, and pressure transducer 1 and pressure transducer 2 20 are used for Real-Time Monitoring and read left side cylinder 18 and the pressure of right side cylinder 19.Be same as the unified of synchronized cylinder 16 to control, add the pipeline latus rectum of fluid, the volume of length of pipe and oil cylinder, resistance to motion etc. are almost identical, so left side cylinder 18, right side cylinder 17 synchronization accuracy are higher, through repeatedly field data show, two cylinder synchronization accuracies are less than 0.1mm.
B, left side cylinder 18 and right side cylinder 17 synchronously retreat: the electromagnet of composite valve with proportional pressure flow 1, three-position four-way electromagnetic directional valve 1 and two solenoid directional control valves 2 15 obtains electric.Hydraulic oil, through composite valve with proportional pressure flow 1, enters three-position four-way electromagnetic directional valve 1, then enters into the rod chamber of left side cylinder 18 and right side cylinder 17, promotes both sides cylinder and moves to rodless cavity.Meanwhile, hydraulic oil is through two four-way electromagnetic reversing valves 2 15, oil circuit control opens Pilot operated check valve 1 and Pilot operated check valve 2 12, the hydraulic oil of the rodless cavity of left side cylinder 18 and right side cylinder 17 is made to be back in the rod chamber of synchronized cylinder 16 by Pilot operated check valve 1 and Pilot operated check valve 2 12 smoothly, the piston of synchronized cylinder 16 is to rodless cavity rollback, rodless cavity hydraulic oil is by one-way throttle valve 4, one-way valve 1 get back to oil tank system realize smoothly left side cylinder 18 and right side cylinder 17 synchronously retreat, be same as the unified of synchronized cylinder 16 to control, the synchronous progress of back off procedure two cylinder is higher, through repeatedly field data show, two cylinder synchronization accuracies are less than 0.1mm.
C, left side cylinder 18 advance separately: the electromagnetism of composite valve with proportional pressure flow 1 and three-position four-way electromagnetic directional valve 2 13 obtains electric.Hydraulic oil enters two-way three-position four-way electromagnetic directional valve 2 13 through composite valve with proportional pressure flow 1, and hydraulic oil enters left side cylinder 18 rodless cavity and promotes piston to rod chamber straight line motion, external load acting.Left side cylinder 18 rod chamber hydraulic oil flows to through top oil outlet. and filler opening on the left of three-position four-way electromagnetic directional valve 2 13, by getting back to fuel tank after solenoid directional control valve, so far left side cylinder advances separately action to complete smoothly.
D, left side cylinder 18 retreat separately: the electromagnetism of composite valve with proportional pressure flow 1 and three-position four-way electromagnetic directional valve 2 13 obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve 2 13 through composite valve with proportional pressure flow 1, hydraulic oil enters right side cylinder 18 rod chamber and promotes piston to rodless cavity straight line motion, piston cylinder rollback, rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve 2 13 of left side cylinder 18, by getting back to fuel tank after solenoid directional control valve, so far cylinder 18 independent backward movement in left side completes smoothly.
E, right side cylinder 17 advance separately: the electromagnet of composite valve with proportional pressure flow 1 and three-position four-way electromagnetic directional valve 3 14 obtains electric.Hydraulic oil enters two-way three-position four-way electromagnetic directional valve 3 14 through composite valve with proportional pressure flow 1, the rodless cavity that hydraulic oil enters right side cylinder 17 promotes piston to rod chamber straight line motion, external load acting, right side cylinder rod chamber hydraulic oil flows to filler opening on the left of three-position four-way electromagnetic directional valve 3 14 through top oil outlet, by getting back to fuel tank after solenoid directional control valve, so far right side cylinder 17 advances separately action to complete smoothly.
F, right side cylinder 17 retreat separately: the electromagnet of composite valve with proportional pressure flow 1 and three-position four-way electromagnetic directional valve 3 14 obtains electric.Hydraulic oil enters two-way three-position four-way electromagnetic directional valve 3 14 through composite valve with proportional pressure flow 1, the rod chamber that hydraulic oil enters right side cylinder 17 promotes piston to rodless cavity straight line motion, piston rod rollback, right side cylinder 17 rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve 3 14, by getting back to fuel tank after solenoid directional control valve, so far cylinder 17 independent backward movement in right side completes smoothly.
Relief valve 1 and relief valve 2 10 is also provided with, for the pressure in regulating loop, so that left side cylinder 18 and right side cylinder 17 advance action under realizing different loads in its oil circuit.Two solenoid directional control valves 1 are for the fluid in supplementary loop, and the electromagnet of system two solenoid directional control valves 1 when rapid operation obtains electric work.One-way valve 1 prevents fluid to be back to composite valve with proportional pressure flow 1, reduction valve 5 safe regulating actions.Pressure transducer 1 and pressure transducer 2 20 are used for real-time monitoring and reading system pressure.
Above-mentioned embodiment is the preferred embodiments of the present invention, can not limit the present invention, and any of other does not deviate from technological scheme of the present invention and the substitute mode of the change made or other equivalence, is included within protection scope of the present invention.
Claims (1)
1. a forming high pressure in pipe hydraulic press both sides cylinder precision synchronous hydraulic control system, comprise composite valve with proportional pressure flow, one-way valve one, three-position four-way electromagnetic directional valve one, one-way throttle valve, reduction valve, two solenoid directional control valves one, one-way valve two, one-way valve three, relief valve one, relief valve two, Pilot operated check valve one, Pilot operated check valve two, three-position four-way electromagnetic directional valve two, three-position four-way electromagnetic directional valve three, two solenoid directional control valves two, synchronized cylinder, right side cylinder, left side cylinder, motor, unidirectional quantitative oil pump, fuel tank, its synchronized cylinder has two rod chambers and a rodless cavity, on the left of it, cylinder and right side cylinder respectively have a rod chamber and a rodless cavity, on the left of it cylinder and right side cylinder oil circuit on be respectively arranged with pressure transducer one and pressure transducer two.
It is characterized in that its working principle is as follows:
A, left side cylinder and right side cylinder synchronously advance: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve one obtains electric, motor obtains electric startup, unidirectional quantitative oil pump coaxial with it starts oil suction, hydraulic oil in fuel tank enters routine pressure flow combination valve, then three-position four-way electromagnetic directional valve one is flowed into, enter after one-way throttle valve in the rodless cavity of synchronized cylinder, promote synchronized cylinder piston to move to rod chamber direction, equal-volume high pressure oil in two rod chambers is discharged, two-way high pressure oil is respectively by Pilot operated check valve one, Pilot operated check valve two enters in the rodless cavity of left side cylinder and right side cylinder, promote left side cylinder, the piston rod synchronous linear motion of right side cylinder, promotion load is done work.
B, left side cylinder and right side cylinder synchronously retreat: the electromagnet of composite valve with proportional pressure flow, three-position four-way electromagnetic directional valve one and two solenoid directional control valves two obtains electric.Hydraulic oil is through composite valve with proportional pressure flow, enter three-position four-way electromagnetic directional valve one, then the rod chamber of left side cylinder and right side cylinder is entered into, promote both sides cylinder to move to rodless cavity, meanwhile, hydraulic oil is through two four-way electromagnetic reversing valves two, oil circuit control opens Pilot operated check valve one and Pilot operated check valve two, the hydraulic oil of the rodless cavity of left side cylinder and right side cylinder is made to be back in the rod chamber of synchronized cylinder by Pilot operated check valve one and Pilot operated check valve two smoothly, the piston of synchronized cylinder is to rodless cavity rollback, rodless cavity hydraulic oil passes through one-way throttle valve, fuel tank got back to by one-way valve one.
C, left side cylinder advance separately: the electromagnetism of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve two obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve two through composite valve with proportional pressure flow, hydraulic oil enters left side cylinder rodless cavity and promotes piston to rod chamber straight line motion, external load acting, left side cylinder rod chamber hydraulic oil flows to through top oil outlet. filler opening on the left of three-position four-way electromagnetic directional valve two, by getting back to fuel tank after solenoid directional control valve, so far left side cylinder advances separately action to complete smoothly.
D, left side cylinder retreat separately: the electromagnetism of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve two obtains electric.Hydraulic oil enters two-way three-position four-way electromagnetic directional valve two through composite valve with proportional pressure flow, hydraulic oil enters right side cylinder rod chamber and promotes piston to rodless cavity straight line motion, piston cylinder rollback, rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve two of left side cylinder, by getting back to fuel tank after solenoid directional control valve, so far cylinder independent backward movement in left side completes smoothly.
E, right side cylinder advance separately: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve three obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve three through composite valve with proportional pressure flow, the rodless cavity that hydraulic oil enters right side cylinder promotes piston to rod chamber straight line motion, external load acting, right side cylinder rod chamber hydraulic oil flows to filler opening on the left of three-position four-way electromagnetic directional valve three through top oil outlet, by getting back to fuel tank after solenoid directional control valve, so far right side cylinder advances separately action to complete smoothly.
F, right side cylinder retreat separately: the electromagnet of composite valve with proportional pressure flow and three-position four-way electromagnetic directional valve three obtains electric, hydraulic oil enters two-way three-position four-way electromagnetic directional valve three through composite valve with proportional pressure flow, the rod chamber that hydraulic oil enters right side cylinder promotes piston to rodless cavity straight line motion, piston rod rollback, right side cylinder rodless cavity hydraulic oil filler opening on the left of three-position four-way electromagnetic directional valve three, by getting back to fuel tank after solenoid directional control valve, so far cylinder independent backward movement in right side completes smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012752.9A CN105545848B (en) | 2016-01-05 | 2016-01-05 | Precise synchronous hydraulic control system for cylinders at two sides of high-pressure forming hydraulic press in pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610012752.9A CN105545848B (en) | 2016-01-05 | 2016-01-05 | Precise synchronous hydraulic control system for cylinders at two sides of high-pressure forming hydraulic press in pipe |
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| Publication Number | Publication Date |
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| CN105545848A true CN105545848A (en) | 2016-05-04 |
| CN105545848B CN105545848B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610012752.9A Active CN105545848B (en) | 2016-01-05 | 2016-01-05 | Precise synchronous hydraulic control system for cylinders at two sides of high-pressure forming hydraulic press in pipe |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107344424A (en) * | 2017-04-17 | 2017-11-14 | 扬力集团股份有限公司 | The hydraulic control system of two point high-speed blanking press |
| CN109505813A (en) * | 2018-12-26 | 2019-03-22 | 中冶京诚工程技术有限公司 | Hydraulic Synchronous Control Device |
| CN109838424A (en) * | 2017-11-27 | 2019-06-04 | 江苏华澳橡胶机械有限公司 | A kind of high-precision locked mode pressure hydraulic control circuit and control method |
| CN110296114A (en) * | 2019-07-29 | 2019-10-01 | 浙江省机械工业情报研究所 | A kind of agricultural machinery suspension mechanism hydraulic levels control system of fast lifting |
| CN112576564A (en) * | 2020-11-26 | 2021-03-30 | 天津市天锻压力机有限公司 | Pressure balance protection device of double-side horizontal side extrusion cylinder of large servo press |
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| CN105201951A (en) * | 2015-10-16 | 2015-12-30 | 浙江大学 | High-efficiency high-precision controllable-flow TBM (tunnel boring machine) support hydraulic system |
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| CN2484171Y (en) * | 2001-06-09 | 2002-04-03 | 方国权 | Three-way pipe hydraulic forming machine |
| JP2007144455A (en) * | 2005-11-28 | 2007-06-14 | Bridgestone Corp | Speed controller for multiple cylinder type press |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107344424A (en) * | 2017-04-17 | 2017-11-14 | 扬力集团股份有限公司 | The hydraulic control system of two point high-speed blanking press |
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| CN109838424A (en) * | 2017-11-27 | 2019-06-04 | 江苏华澳橡胶机械有限公司 | A kind of high-precision locked mode pressure hydraulic control circuit and control method |
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| CN109505813B (en) * | 2018-12-26 | 2024-02-06 | 中冶京诚工程技术有限公司 | Hydraulic synchronous control device |
| CN110296114A (en) * | 2019-07-29 | 2019-10-01 | 浙江省机械工业情报研究所 | A kind of agricultural machinery suspension mechanism hydraulic levels control system of fast lifting |
| CN112576564A (en) * | 2020-11-26 | 2021-03-30 | 天津市天锻压力机有限公司 | Pressure balance protection device of double-side horizontal side extrusion cylinder of large servo press |
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| Publication number | Publication date |
|---|---|
| CN105545848B (en) | 2023-06-20 |
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Address after: 528000, No. 33, Taoyuan East Road, Songgang Industrial Park, lion Town, Nanhai District, Guangdong, Foshan (workshop two) Applicant after: GUANGDONG SIHAO HYDROFORMING TECHNOLOGY CO.,LTD. Address before: 528000 Foshan, Nanhai District, Guangdong Xia Xia Industrial Park Applicant before: GUANGDONG SIHAO HYDRAULIC MACHINERY Co.,Ltd. |
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