CN104006015A - Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine - Google Patents
Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine Download PDFInfo
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- CN104006015A CN104006015A CN201410218189.1A CN201410218189A CN104006015A CN 104006015 A CN104006015 A CN 104006015A CN 201410218189 A CN201410218189 A CN 201410218189A CN 104006015 A CN104006015 A CN 104006015A
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Abstract
The invention provides a pressure maintaining and speed stabilizing hydraulic system of a hydraulic machine. The pressure maintaining and speed stabilizing hydraulic system comprises an oil tank, a filter, a hydraulic pump, a motor, a one-way valve, a pilot operated compound relief valve, a two-position two-way electromagnetic directional valve, a three-position four-way electromagnetic directional valve, a double-hydraulic-control one-way valve and a one-way speed regulating valve. When the hydraulic machine works in the feeding working station, the left position of the three-position four-way electromagnetic directional valve is connected; oil liquid enters a first hydraulic cylinder rodless cavity through the one-way valve, the three-position four-way electromagnetic directional valve and the left one-way valve in the double-hydraulic-control one-way valve under the effect of the hydraulic pump; oil liquid in a rod cavity enters a second hydraulic cylinder rodless cavity through a pipe and returns to the oil tank through a speed regulating valve body in the one-way speed regulating valve, and a valve opening of the speed regulating valve body is set to be capable of achieving the stability of the motion speed of the hydraulic machine during feeding. The hydraulic system of the hydraulic machine has the advantages of being remarkable in pressure maintaining effect in the feeding working condition, stable in running speed, rapid in returning and high in efficiency.
Description
Technical field
the present invention relates to a kind of hydraulic system of hydraulic machine of pressurize speed stabilizing, belong to machinery production control technique field.
Background technique
Along with the development of Modern Industrial Control Technology, hydraulic press hydraulic control system technology is more and more ripe, requires also more and more higher to its control performance.Hydraulic press in the course of the work, its work cycle be fast-descending, at a slow speed pressurization, quick return three phases.Wherein, pressurization is that working stage is the emphasis of whole hydraulic control process at a slow speed.This stage requires cutter (being upper die plate) when the pressure with certain compresses sheet material, also to need the speed of its motion to keep stable, and after compressing sheet material with level pressure constant speed, cutter backhaul has just completed course of working.The quality of processing of sheet material not only has certain relation with the material of himself, is also subject to cutter pressure and whether constant impact of speed in compression sheet material process simultaneously.If having the speed of fluctuation or motion to change, hydraulic press pressure in compression sheet material process can cause that impact, vibrations, the noise of hydraulic system even causes distortion and the destruction of sheet material material.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, a kind of hydraulic system of hydraulic machine of pressurize speed stabilizing is provided.
Hydraulic system of hydraulic machine of the present invention, it comprises fuel tank, filter, oil hydraulic pump, motor, one-way valve, pilot operated compound relief valve, bi-bit bi-pass solenoid directional control valve, 3-position 4-way solenoid directional control valve, dual hydraulic control one-way valve and one-way speed-regulating valve.
Hydraulic system of hydraulic machine of the present invention is in the time of work, the left position of 3-position 4-way solenoid directional control valve is connected, fluid left side one-way valve in dual hydraulic control one-way valve enters the rodless cavity of the first oil hydraulic cylinder, and the fluid of its rod chamber enters the rodless cavity of the second oil hydraulic cylinder of series connection with it by the road; On the loop being connected with the second oil hydraulic cylinder rod chamber, design an one-way speed-regulating valve, by regulating the amount of opening of series flow control valve valve port to realize the function of speed governing.
The invention has the beneficial effects as follows:
(1) adopt dual hydraulic control one-way valve to realize real-time pressurize, series cylinder is realized the synchronous of twin-tub;
(2) one-way speed-regulating valve is realized the speed governing to hydraulic cylinder piston rod, and pressurize can realize hydraulic press work and enter time, constant speed are stable rapidly when backhaul; Working efficiency is high, energy-conservation.
Brief description of the drawings
Fig. 1 is hydraulic system of hydraulic machine figure of the present invention.
Wherein, 1 is fuel tank, and 2 is filter, 3 is oil hydraulic pump, and 4 is motor, and 5 is one-way valve, 6 is pressure meter switch, 7 is pressure gauge, and 8 is pilot operated compound relief valve, and 9 is bi-bit bi-pass solenoid directional control valve, 10 is 3-position 4-way solenoid directional control valve, 11 is dual hydraulic control one-way valve, and 12 is one-way speed-regulating valve, and 13 is oil hydraulic cylinder.
Embodiment
As shown in Figure 1, hydraulic system of hydraulic machine of the present invention comprises fuel tank 1, filter 2, oil hydraulic pump 3, motor 4, one-way valve 5, pressure meter switch 6, pressure gauge 7, pilot operated compound relief valve 8, bi-bit bi-pass solenoid directional control valve 9,3-position 4-way solenoid directional control valve 10, dual hydraulic control one-way valve 11, one-way speed-regulating valve 12, oil hydraulic cylinder 13.
In the time that hydraulic press is worked, motor 4 drives oil hydraulic pump 3 by fluid process filter 2 sucking-offs in fuel tank 1, and fluid is divided into two tunnels through one-way valve 5; Wherein a road is through pilot operated compound relief valve 8 and bi-bit bi-pass solenoid directional control valve 9 oil sump tanks 1; Pressure regulation, the unloading function to hydraulic system can be realized in this road binders road.Another road binders road enters the rodless cavity of the first oil hydraulic cylinder 13 through the one-way valve on the left side in 3-position 4-way solenoid directional control valve 10, dual hydraulic control one-way valve 11; On the return line of fluid, one-way valve and the 3-position 4-way solenoid directional control valve 10 on the right in one-way speed-regulating valve 12, dual hydraulic control one-way valve 11 of the fluid in the second oil hydraulic cylinder 13 rod chambers return to fuel tank 1.
In the time that the left position of 3-position 4-way solenoid directional control valve 10 is switched in oil circuit, the one-way valve on fluid left side in dual hydraulic control one-way valve 11 enters the rodless cavity of the first oil hydraulic cylinder 13-1, and the fluid of its rod chamber enters the rodless cavity of the second oil hydraulic cylinder 13-2 by the road; Because the first oil hydraulic cylinder 13-1 adopts the Placement of connecting with the second oil hydraulic cylinder 13-2, therefore can realize the synchronous of two hydraulic cylinders.In the series flow control valve of fluid in the second oil hydraulic cylinder 13-2 rod chamber in one-way speed-regulating valve 12, dual hydraulic control one-way valve 11, one-way valve and the 3-position 4-way solenoid directional control valve 10 on the right return to fuel tank 1; In this process, can realize the adjusting to oil hydraulic cylinder 13 movement velocitys by the valve port that regulates series flow control valve in one-way speed-regulating valve 12, thereby ensure the stability at hydraulic press working procedure medium velocity.
In the time that the meta of 3-position 4-way solenoid directional control valve 10 is switched in oil circuit, owing to providing hydraulic oil without hydraulic power to system, thereby the one-way conduction characteristic of dual hydraulic control one-way valve 11 realizes the back pressure properties of whole hydraulic system.
In the time that the right position of 3-position 4-way solenoid directional control valve 10 is switched in oil circuit, one-way valve in one-way valve, the one-way speed-regulating valve 12 on fluid the right in dual hydraulic control one-way valve 11 enters the rod chamber of the second oil hydraulic cylinder 13-2, and the fluid of its rodless cavity enters the rod chamber of the first oil hydraulic cylinder 13-1 by the road; Because the first oil hydraulic cylinder 13-1 adopts the Placement of connecting with the second oil hydraulic cylinder 13-2, therefore can realize the synchronous of two hydraulic cylinders.One-way valve and the 3-position 4-way solenoid directional control valve 10 on the fluid left side in dual hydraulic control one-way valve 11 in the first oil hydraulic cylinder 13-1 rodless cavity return to fuel tank 1.
Claims (1)
1. a hydraulic system of hydraulic machine for pressurize speed stabilizing, it comprises fuel tank, oil hydraulic pump, motor, one-way valve, pilot operated compound relief valve, bi-bit bi-pass solenoid directional control valve, 3-position 4-way solenoid directional control valve, dual hydraulic control one-way valve and one-way speed-regulating valve; It is characterized in that, motor is connected with oil hydraulic pump, and oil hydraulic pump is connected with fuel tank by filter, the one-way valve being in addition connected with oil hydraulic pump simultaneously; Be connected pilot operated compound relief valve and bi-bit bi-pass solenoid directional control valve with the connected Yi of one-way valve road; Another road being connected with one-way valve is connected with oil hydraulic cylinder with dual hydraulic control one-way valve through 3-position 4-way solenoid directional control valve, at the one-way speed-regulating valve that has being connected with oil hydraulic cylinder rod chamber oil circuit, and the control of speed stability when oil hydraulic cylinder work being entered for realizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218189.1A CN104006015A (en) | 2014-05-22 | 2014-05-22 | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410218189.1A CN104006015A (en) | 2014-05-22 | 2014-05-22 | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine |
Publications (1)
| Publication Number | Publication Date |
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| CN104006015A true CN104006015A (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410218189.1A Pending CN104006015A (en) | 2014-05-22 | 2014-05-22 | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine |
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| CN (1) | CN104006015A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214149A (en) * | 2014-09-18 | 2014-12-17 | 芜湖高昌液压机电技术有限公司 | Remote pressure regulating loop for lifter |
| CN104500462A (en) * | 2014-12-08 | 2015-04-08 | 徐州重型机械有限公司 | Speed regulation device and crane superlift deploying control system |
| CN105537664A (en) * | 2016-02-03 | 2016-05-04 | 江苏龙胜机床制造有限公司 | Hydraulic system of plate shearing machine |
| CN106015135A (en) * | 2016-05-13 | 2016-10-12 | 合肥工业大学 | Energy-saving type double-execution-unit hydraulic machine system and control method |
| CN107366645A (en) * | 2017-08-05 | 2017-11-21 | 苏州方德锐精密机电科技有限公司 | A kind of abrasive Flow polishes machine hydraulic power system |
| CN110242627A (en) * | 2019-04-30 | 2019-09-17 | 广东省机械研究所 | Filter press quickly propels system |
| CN111344475A (en) * | 2017-11-10 | 2020-06-26 | J-洛克公司 | Hydraulic and control system for resin injection |
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| CN203548373U (en) * | 2013-09-27 | 2014-04-16 | 重庆市科学技术研究院 | Servo hydraulic system |
| CN203856789U (en) * | 2014-05-22 | 2014-10-01 | 南通东海机床制造有限公司 | Pressure-maintaining speed-stabilizing hydraulic system of hydraulic machine |
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2014
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2239345Y (en) * | 1995-04-22 | 1996-11-06 | 重庆大学 | Multifunctional single column hydraulic press |
| CN2442815Y (en) * | 2000-10-19 | 2001-08-15 | 醴陵市瓷业机械厂 | Single-head hydraulic deep-blank rolling shaper |
| CN2577023Y (en) * | 2002-11-03 | 2003-10-01 | 张洪庆 | Electrohydraulic actuator |
| CN2703909Y (en) * | 2004-05-25 | 2005-06-08 | 张洪庆 | Two-oil-circuit micro hydraulic pump station |
| CN201042856Y (en) * | 2007-06-20 | 2008-04-02 | 成都四星液压制造有限公司 | Magnetic materials dry pressing shaping oleodynamic press hydraulic system |
| CN101135326A (en) * | 2007-09-26 | 2008-03-05 | 中南大学 | Giant-scale hydraulic press synchronous balancing hydraulic circuit |
| CN201224185Y (en) * | 2008-06-30 | 2009-04-22 | 上海国冶工程技术有限公司 | Hydraulic equipment |
| CN101537469A (en) * | 2009-04-15 | 2009-09-23 | 中南大学 | High-precision synchronizing device for forging moving beam of hydraulic press |
| CN101913086A (en) * | 2010-07-14 | 2010-12-15 | 合肥锻压机床有限公司 | Leak-free hydraulic system of mobile workbench |
| CN201828418U (en) * | 2010-09-29 | 2011-05-11 | 上海高压油泵厂有限公司 | Hydraulic test system for horizontal dual-cylinder hydraulic machine |
| CN202053557U (en) * | 2011-02-25 | 2011-11-30 | 合肥合锻机床股份有限公司 | Hydraulic system of small and medium size hydraulic press |
| CN202239624U (en) * | 2011-09-20 | 2012-05-30 | 天津市天锻压力机有限公司 | Electrohydraulic proportional control system for powder hydraulic press |
| CN202490932U (en) * | 2011-11-11 | 2012-10-17 | 中钢天源(马鞍山)通力磁材有限公司 | A novel hydraulic system of a magnetic material wet-type molding hydraulic press |
| CN102922765A (en) * | 2012-11-13 | 2013-02-13 | 天津市诺恩电器设备制造有限公司 | Hydraulic machine for rapid water squeezing and shaping |
| CN203548373U (en) * | 2013-09-27 | 2014-04-16 | 重庆市科学技术研究院 | Servo hydraulic system |
| CN203856789U (en) * | 2014-05-22 | 2014-10-01 | 南通东海机床制造有限公司 | Pressure-maintaining speed-stabilizing hydraulic system of hydraulic machine |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214149A (en) * | 2014-09-18 | 2014-12-17 | 芜湖高昌液压机电技术有限公司 | Remote pressure regulating loop for lifter |
| CN104500462A (en) * | 2014-12-08 | 2015-04-08 | 徐州重型机械有限公司 | Speed regulation device and crane superlift deploying control system |
| CN105537664A (en) * | 2016-02-03 | 2016-05-04 | 江苏龙胜机床制造有限公司 | Hydraulic system of plate shearing machine |
| CN106015135A (en) * | 2016-05-13 | 2016-10-12 | 合肥工业大学 | Energy-saving type double-execution-unit hydraulic machine system and control method |
| CN107366645A (en) * | 2017-08-05 | 2017-11-21 | 苏州方德锐精密机电科技有限公司 | A kind of abrasive Flow polishes machine hydraulic power system |
| CN111344475A (en) * | 2017-11-10 | 2020-06-26 | J-洛克公司 | Hydraulic and control system for resin injection |
| CN110242627A (en) * | 2019-04-30 | 2019-09-17 | 广东省机械研究所 | Filter press quickly propels system |
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| PB01 | Publication | ||
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Application publication date: 20140827 |