CN204082720U - A kind of energy-saving hydraulic system of press machine - Google Patents
A kind of energy-saving hydraulic system of press machine Download PDFInfo
- Publication number
- CN204082720U CN204082720U CN201420506624.6U CN201420506624U CN204082720U CN 204082720 U CN204082720 U CN 204082720U CN 201420506624 U CN201420506624 U CN 201420506624U CN 204082720 U CN204082720 U CN 204082720U
- Authority
- CN
- China
- Prior art keywords
- valve
- hydraulic cylinder
- hydraulic
- solenoid directional
- directional control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a kind of energy-saving hydraulic system of press machine, and the oil outlet of its Variable plunger pump is connected with pilot operated compound relief valve, constant pressure pressure-reducing valve and guide type sequence valve simultaneously, and pilot operated compound relief valve is connected with remote pressure regulating valve; Constant pressure pressure-reducing valve is connected with the control port of electro-hydraulic reversing valve and the control port of main reversing valve simultaneously; The actuator port connection of electro-hydraulic reversing valve ejects oil hydraulic cylinder; The filler opening of main reversing valve is connected with guide type sequence valve, and return opening is connected with electro-hydraulic reversing valve, and actuator port is connected with bidirectional hydraulic lock; The actuator port of bidirectional hydraulic lock is connected with master hydraulic cylinder; Be connected with solenoid directional control valve a, b and pressure relay between master hydraulic cylinder and bidirectional hydraulic lock, solenoid directional control valve a is connected with accumulator a simultaneously, and solenoid directional control valve b is connected with accumulator b.Master hydraulic cylinder fast downlink can be realized, slow pressurization, pressurize, pressure release return, original position stop, eject ejecting and returning technological action of oil hydraulic cylinder.Its good energy-conserving effect, pressurize is stablized, and controllability is good.
Description
Technical field:
The utility model relates to the hydraulic system field of press machine, relates to a kind of energy-saving hydraulic system of press machine in particular.
Background technique:
The hydraulic system of current domestic common YB32-200 type press machine, see accompanying drawing 1, this system comprises plunger pump 1a, pilot operated compound relief valve 2a, remote pressure regulating valve 3a, constant pressure pressure-reducing valve 4a, eject oil hydraulic cylinder relief valve 5a, eject oil hydraulic cylinder safety valve 6a, eject oil hydraulic cylinder 7a, electro-hydraulic reversing valve 8a, solenoid directional control valve 9a, guide type sequence valve 10a, main reversing valve 11a, pre-off-load selector valve group 12a, pressure relay 13a, one-way valve 14a, pilot operated directional control valve 15a, 16a, master hydraulic cylinder 17a, master hydraulic cylinder safety valve 18a, it can realize master hydraulic cylinder fast downlink, slow pressurization, pressurize time delay, pressure release fast return, original position stop, what eject oil hydraulic cylinder ejects and returns 7 typical process actions.Above-mentioned hydraulic system structure is simple, easily manufactured, but also has the following disadvantages: 1, in master cylinder pressure release fast return, during pressure release, master hydraulic cylinder is without thick stick chamber high pressure oil directly by pre-off-load selector valve group oil sump tank, causes energy loss; 2, pressure dwelling loop poor stability; 3, master hydraulic cylinder commutation is controlled by main reversing valve, and main reversing valve is controlled by solenoid directional control valve and pre-off-load selector valve group, and system controllability and measurability is poor.
Model utility content:
The purpose of this utility model is for the deficiencies in the prior art part, provides a kind of energy-saving hydraulic system of press machine, energy saving of system better effects if, and pressurize is more stable, and controllability is good.
Technology solution of the present utility model is as follows:
An energy-saving hydraulic system for press machine, it comprises Variable plunger pump, pilot operated compound relief valve, remote pressure regulating valve, constant pressure pressure-reducing valve, ejects oil hydraulic cylinder, electro-hydraulic reversing valve, solenoid directional control valve a, guide type sequence valve, main reversing valve, bidirectional hydraulic lock, pressure relay, accumulator a, accumulator b, master hydraulic cylinder and solenoid directional control valve b; The oil outlet of described Variable plunger pump is connected with pilot operated compound relief valve, constant pressure pressure-reducing valve and guide type sequence valve simultaneously, and the outlet of described pilot operated compound relief valve is connected with remote pressure regulating valve.
The outlet of described constant pressure pressure-reducing valve is connected with the control port of electro-hydraulic reversing valve and the control port of main reversing valve simultaneously; The actuator port connection of described electro-hydraulic reversing valve ejects oil hydraulic cylinder.
The filler opening of described main reversing valve is connected with guide type sequence valve, and the return opening of main reversing valve is connected with electro-hydraulic reversing valve, and the actuator port of main reversing valve is connected with bidirectional hydraulic lock; The actuator port of described bidirectional hydraulic lock is connected with master hydraulic cylinder; Be connected with pressure relay, solenoid directional control valve a and solenoid directional control valve b between the rodless cavity of described master hydraulic cylinder and bidirectional hydraulic lock, solenoid directional control valve a is connected with accumulator a simultaneously, and solenoid directional control valve b is connected with accumulator b.
As preferably, between the rod chamber of described master hydraulic cylinder and bidirectional hydraulic lock, be connected with master hydraulic cylinder safety valve and Pilot operated check valve.
As preferably, described in eject the rodless cavity of oil hydraulic cylinder and be connected with between electro-hydraulic reversing valve and eject oil hydraulic cylinder relief valve and eject oil hydraulic cylinder safety valve.
As preferably, the piston movement direction of described master hydraulic cylinder is provided with and the position limit switch a for hydraulic control system acting of the piston cooperating of oil hydraulic cylinder, position limit switch b and position limit switch c.
As preferably, described solenoid directional control valve a and solenoid directional control valve b is respectively 2/2-way solenoid directional control valve.
The beneficial effects of the utility model are:
The utility model applying pressure Control solenoid directional control valve a, realize accumulator a and reclaim the high pressure oil that master hydraulic cylinder executes pressure release before backhaul after pressurize work, the high pressure oil that accumulator a reclaims, when system master hydraulic cylinder fast downlink, for system repairing, accelerate master cylinder downstream rate, improve motion speed and the working efficiency of system, energy-saving effect is better.
The utility model adopts main reversing valve to realize master hydraulic cylinder commutation and makes that commutation is more stable, controllability is better.
The utility model realizes system pressurize by bidirectional hydraulic lock and accumulator b, improves the pressurize stability of system.
Accompanying drawing illustrates:
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the hydraulic system principle figure of prior art;
Fig. 2 is hydraulic system principle figure of the present utility model;
Fig. 3 is the fast downlink schematic diagram of master hydraulic cylinder of the present utility model;
Fig. 4 is that accumulator a of the present utility model reclaims master hydraulic cylinder rodless cavity high-voltage oil liquid schematic diagram;
Fig. 5 is that bidirectional hydraulic lock of the present utility model and accumulator b realize system principle of keeping pressure figure.
Embodiment:
Embodiment, see accompanying drawing 2, an energy-saving hydraulic system for press machine, it comprises Variable plunger pump 1, pilot operated compound relief valve 2, remote pressure regulating valve 3, constant pressure pressure-reducing valve 4, ejects oil hydraulic cylinder 7, electro-hydraulic reversing valve 8, solenoid directional control valve a9, guide type sequence valve 10, main reversing valve 11, bidirectional hydraulic lock 12, pressure relay 13, accumulator a14, accumulator b15, master hydraulic cylinder 17 and solenoid directional control valve b19; The oil outlet of described Variable plunger pump 1 is connected with pilot operated compound relief valve 2, constant pressure pressure-reducing valve 4 and guide type sequence valve 10 simultaneously, and the outlet of described pilot operated compound relief valve 2 is connected with remote pressure regulating valve 3.
The outlet of described constant pressure pressure-reducing valve 4 is connected with the control port of electro-hydraulic reversing valve 8 and the control port of main reversing valve 11 simultaneously; The actuator port connection of described electro-hydraulic reversing valve 8 ejects oil hydraulic cylinder 7.Describedly eject the rodless cavity of oil hydraulic cylinder 7 with being connected between electro-hydraulic reversing valve 8 and eject oil hydraulic cylinder relief valve 5 and eject oil hydraulic cylinder safety valve 6.
The filler opening of described main reversing valve 11 is connected with guide type sequence valve 10, and the return opening of main reversing valve 11 is connected with electro-hydraulic reversing valve 8, and the actuator port of main reversing valve 11 is connected with bidirectional hydraulic lock 12; The actuator port of described bidirectional hydraulic lock 12 is connected with master hydraulic cylinder 17; Be connected with pressure relay 13, solenoid directional control valve a9 and solenoid directional control valve b19 between the rodless cavity of described master hydraulic cylinder and bidirectional hydraulic lock simultaneously, solenoid directional control valve a9 and solenoid directional control valve b19 is respectively 2/2-way solenoid directional control valve, solenoid directional control valve a9 is connected with accumulator a14, and solenoid directional control valve b19 is connected with accumulator b15.
Master hydraulic cylinder safety valve 18 and Pilot operated check valve 16 is connected with between the rod chamber of described master hydraulic cylinder 17 and bidirectional hydraulic lock 12.
The piston movement direction of described master hydraulic cylinder 17 is provided with and the position limit switch a20 for hydraulic control system acting of the piston cooperating of oil hydraulic cylinder, position limit switch b21 and position limit switch c22, in master hydraulic cylinder home position, position limit switch c is installed, loading position installs position limit switch b, and pressurize position meets position limit switch a.
The outlet of the utility model Variable plunger pump 1 divides three branch roads, and Article 1 branch road is the pressure reducing circuit be connected with constant pressure pressure-reducing valve 4, and loop is used for the commutation of electro-hydraulic reversing valve 8 and main reversing valve 11; Article 2 branch road is the pressure-control circuit be connected with pilot operated compound relief valve 2, and pilot operated compound relief valve 2 is connected with remote pressure regulating valve 3 and realizes second voltage regulation; Article 3 branch road is connected with guide type sequence valve 10, and be working connection, guide type sequence valve 10 plays the effect of preload.
During utility model works, during system master hydraulic cylinder 17 fast downlink, see accompanying drawing 3, electromagnet 5YA obtains electric, and main reversing valve 11 is operated in left position, and electromagnet 3YA obtains electric, solenoid directional control valve a9 is operated in left position, the hydraulic oil reclaimed in accumulator a14 is added in loop, plays and accelerate master cylinder downstream rate, improve the effect of system effectiveness.When master hydraulic cylinder encounters position limit switch 21, system starts slow pressurization, electromagnet 3YA power-off, solenoid directional control valve a9 is operated in right position, electromagnet 4YA obtains electric, for accumulator b15 pressurizes, when master hydraulic cylinder encounters position limit switch 20 simultaneously, electromagnet 5YA power-off, main reversing valve 11 is operated in meta, realizes system pressurize, see accompanying drawing 5 by bidirectional hydraulic lock 12 and accumulator b15.After pressurize completes, electromagnet 4YA power-off, electromagnet 3YA obtains electric, and solenoid directional control valve a9 is operated in left position, and the high pressure oil in master hydraulic cylinder rodless cavity is injected accumulator a14, and system decompression, is shown in accompanying drawing 4.When pressure relay 13 reaches setting value, electromagnet 3YA power-off, solenoid directional control valve a9 is operated in right position, and electromagnet 6YA obtains electric simultaneously, and main reversing valve 11 is operated in right position, system fast return, by above-mentioned work cycle, system application accumulator a14 to achieve after pressurize master hydraulic cylinder 17 without the recovery of thick stick chamber high-voltage oil liquid, and the repairing when high-voltage oil liquid of recovery being used for master cylinder fast downlink, save the energy, improve system works efficiency simultaneously.Meanwhile, accumulator b15 realizes pressurization when system slow pressurization, and realizes pressurize when system pressurize, improves the stability of pressure dwelling loop, and it is better that system application position limit switch, pressure relay and PLC control controllability.
Above-described embodiment is the specific descriptions of carrying out the utility model; just the utility model is further described; can not be interpreted as the restriction to the utility model protection domain, those skilled in the art makes some nonessential improvement according to the content of above-mentioned model utility and adjustment all falls within protection domain of the present utility model.
Claims (5)
1. an energy-saving hydraulic system for press machine, is characterized in that: it comprises Variable plunger pump, pilot operated compound relief valve, remote pressure regulating valve, constant pressure pressure-reducing valve, ejects oil hydraulic cylinder, electro-hydraulic reversing valve, solenoid directional control valve a, guide type sequence valve, main reversing valve, bidirectional hydraulic lock, pressure relay, accumulator a, accumulator b, master hydraulic cylinder and solenoid directional control valve b; The oil outlet of described Variable plunger pump is connected with pilot operated compound relief valve, constant pressure pressure-reducing valve and guide type sequence valve simultaneously, and the outlet of described pilot operated compound relief valve is connected with remote pressure regulating valve;
The outlet of described constant pressure pressure-reducing valve is connected with the control port of electro-hydraulic reversing valve and the control port of main reversing valve simultaneously; The actuator port connection of described electro-hydraulic reversing valve ejects oil hydraulic cylinder;
The filler opening of described main reversing valve is connected with guide type sequence valve, and the return opening of main reversing valve is connected with electro-hydraulic reversing valve, and the actuator port of main reversing valve is connected with bidirectional hydraulic lock; The actuator port of described bidirectional hydraulic lock is connected with master hydraulic cylinder; Be connected with pressure relay, solenoid directional control valve a and solenoid directional control valve b between the rodless cavity of described master hydraulic cylinder and bidirectional hydraulic lock, solenoid directional control valve a is connected with accumulator a simultaneously, and solenoid directional control valve b is connected with accumulator b.
2. the energy-saving hydraulic system of a kind of press machine according to claim 1, is characterized in that: be connected with master hydraulic cylinder safety valve and Pilot operated check valve between the rod chamber of described master hydraulic cylinder and bidirectional hydraulic lock.
3. the energy-saving hydraulic system of a kind of press machine according to claim 1, is characterized in that: described in eject the rodless cavity of oil hydraulic cylinder and be connected with between electro-hydraulic reversing valve and eject oil hydraulic cylinder relief valve and eject oil hydraulic cylinder safety valve.
4. the energy-saving hydraulic system of a kind of press machine according to claim 1, is characterized in that: the piston movement direction of described master hydraulic cylinder is provided with and the position limit switch a for hydraulic control system acting of the piston cooperating of oil hydraulic cylinder, position limit switch b and position limit switch c.
5. the energy-saving hydraulic system of a kind of press machine according to claim 1, is characterized in that: described solenoid directional control valve a and solenoid directional control valve b is respectively 2/2-way solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506624.6U CN204082720U (en) | 2014-09-03 | 2014-09-03 | A kind of energy-saving hydraulic system of press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420506624.6U CN204082720U (en) | 2014-09-03 | 2014-09-03 | A kind of energy-saving hydraulic system of press machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082720U true CN204082720U (en) | 2015-01-07 |
Family
ID=52175443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420506624.6U Expired - Fee Related CN204082720U (en) | 2014-09-03 | 2014-09-03 | A kind of energy-saving hydraulic system of press machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082720U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545337A (en) * | 2015-12-10 | 2016-05-04 | 太原科技大学 | Stand column circuit of hydraulic support and control method |
| CN106762927A (en) * | 2016-12-12 | 2017-05-31 | 天津商企生产力促进有限公司 | Electromechanical organisation of working with backhaul decompression function |
| CN109026863A (en) * | 2018-08-23 | 2018-12-18 | 吕律廷 | The hydraulic oil-field oil pumper of full hydraulic control |
| CN109790855A (en) * | 2016-10-05 | 2019-05-21 | 贺尔碧格自动化技术控股股份有限公司 | Electric-liquid type driving unit |
| CN111677700A (en) * | 2020-05-19 | 2020-09-18 | 江苏理工学院 | Turnover elevator hydraulic system based on load port independent control |
-
2014
- 2014-09-03 CN CN201420506624.6U patent/CN204082720U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545337A (en) * | 2015-12-10 | 2016-05-04 | 太原科技大学 | Stand column circuit of hydraulic support and control method |
| CN105545337B (en) * | 2015-12-10 | 2017-10-20 | 太原科技大学 | A kind of column loop of hydraulic support and control method |
| CN109790855A (en) * | 2016-10-05 | 2019-05-21 | 贺尔碧格自动化技术控股股份有限公司 | Electric-liquid type driving unit |
| CN109790855B (en) * | 2016-10-05 | 2020-09-08 | 贺尔碧格自动化技术控股股份有限公司 | Electrohydraulic drive unit |
| CN106762927A (en) * | 2016-12-12 | 2017-05-31 | 天津商企生产力促进有限公司 | Electromechanical organisation of working with backhaul decompression function |
| CN109026863A (en) * | 2018-08-23 | 2018-12-18 | 吕律廷 | The hydraulic oil-field oil pumper of full hydraulic control |
| CN111677700A (en) * | 2020-05-19 | 2020-09-18 | 江苏理工学院 | Turnover elevator hydraulic system based on load port independent control |
| CN111677700B (en) * | 2020-05-19 | 2022-04-08 | 江苏理工学院 | Turnover elevator hydraulic system based on load port independent control |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204082720U (en) | A kind of energy-saving hydraulic system of press machine | |
| CN204704167U (en) | Double loop energy storage type hydraulic control slow closing valve hydraulic station | |
| CN201836129U (en) | Quick pressure lifting device for accumulator on hydraulic pump station | |
| CN102168540B (en) | Hydraulic pumping unit with pressure compensation device | |
| CN104948512B (en) | Pressure buildup device for die casting machine | |
| CN204099304U (en) | A kind of baby press hydraulic driving system | |
| CN202170901U (en) | Main valve bank device of pumped type concrete wet sprayer for coal mine | |
| CN102418719B (en) | Energy-saving hydraulic station | |
| CN107605814A (en) | Energy-saving tyre vulcanizer open mold hydraulic servo control system | |
| CN106151323A (en) | A kind of single oil circuit hydraulic system | |
| CN204020051U (en) | Rapid forge press return device of rapid and rapid forge press | |
| CN202431627U (en) | Energy-saving hydraulic station | |
| CN203384136U (en) | Speed exchange circuit with parallel speed control valves | |
| CN104454707A (en) | Simple hydraulic system for bending machine | |
| CN205278183U (en) | Disk floodgate stopper hydraulic control system | |
| CN203937141U (en) | A kind of hydraulic system of thin-walled cutlery box special injection molding | |
| CN203717500U (en) | Plate shearing synchronous hydraulic control system based on double-output-shaft motor | |
| CN203248426U (en) | Fast differential circuit | |
| CN204276793U (en) | A kind of novel hydraulic riveting system | |
| CN205806044U (en) | A kind of energy-saving hydraulic system | |
| CN104085094A (en) | Die opening thimble synchronizing loop of single pump system injection molding machine | |
| CN204895439U (en) | Underground scraper braking system with starter protect function | |
| CN204512021U (en) | A kind of Form-bar Press Machine enclosed oil supply system | |
| CN210599612U (en) | Continuous impact pressurization system for double-pump oil supply | |
| CN108818883B (en) | Ceramic press electrohydraulic control method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20160903 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |