CN202360483U - Fast anti-shock hydraulic system - Google Patents
Fast anti-shock hydraulic system Download PDFInfo
- Publication number
- CN202360483U CN202360483U CN2011204751533U CN201120475153U CN202360483U CN 202360483 U CN202360483 U CN 202360483U CN 2011204751533 U CN2011204751533 U CN 2011204751533U CN 201120475153 U CN201120475153 U CN 201120475153U CN 202360483 U CN202360483 U CN 202360483U
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Abstract
The utility model discloses a fast anti-shock hydraulic system, which belongs to hydraulic systems and is suitable for various fast hydraulic presses such as hydraulic forging press, hot extrusion hydraulic press, punching and blanking hydraulic press and so on. The fast anti-shock hydraulic system provided by the utility model comprises a main cylinder, wherein a fourth two-way cartridge valve as a pre pressure relief plug-in and a first two-position four-way electromagnetic valve controlled by the fourth two-way cartridge valve are arranged on an upper chamber of the main cylinder; the main cylinder is used for reducing shock during the high and low pressure switching; a second two-way cartridge valve, an eighth two-way cartridge valve and a ninth two-way cartridge valve as oil release plug-ins are connected with a lower chamber of the main cylinder in parallel to achieve graded pressure relief so as to achieve different fast downstream speeds; and a second overflow valve and a third overflow valve are connected with an oil control hole of the second two-way cartridge valve in parallel to achieve overload protection and provide backpressure for quick return stroke. The fast anti-shock hydraulic system has the advantages that compared with a normal hydraulic system, the pre-relief plug-ins are added on the upper chamber and the lower chamber to play a buffer role. A plurality of oil release plug-ins are connected with the lower chamber in parallel, the pressure is released fast by the direction valve, so that the hydraulic shock during switching from high speed to low speed, and high pressure to low pressure is reduced.
Description
Affiliated technical field
The utility model discloses a kind of quick protecting against shock hydraulic system; Belong to hydraulic system.Be applicable to forging hydraulic press, hot extrusion, various fast hydraulic pressure machines such as punching and blanking hydraulic press.
Background technique
Along with people's is pursued the requirement of high efficiency and some new procesies, is increasingly high to the rate request of hydraulic press.And the parts of high-speed motion are braked suddenly, the hydraulic shock that produces owing to the inertial force of parts.Swiftly flowing liquid stops suddenly, is mixed with the compression shock that air or water cause in the fluid.Produce strong vibration and noise.Compression shock causes valve, and the misoperation of relay has reduced the reliability and stability of hydraulic system, damages hydraulic seal, reduces the working life of hydraulic element.Impact the machining accuracy of the influence of vibration equipment that produces.
Summary of the invention
For overcoming the above-mentioned deficiency of prior art, the utility model provides a kind of quick protecting against shock hydraulic system.
The utility model is realized with following technological scheme: a kind of novel quick protecting against shock hydraulic system, comprise master cylinder, and at the master cylinder epicoele the 4th two-way plug-in valve of the impact when being used to reduce high low pressure and switching and first two-position four-way solenoid valve of control thereof are housed; Be parallel with pressure plug-in unit second two-way plug-in valve, the 8th two-way plug-in valve, three draining plug-in units of the 9th two-way plug-in valve at the master cylinder cavity of resorption, be used for the classification pressure release, realize different quick downstream rates; In the control port of second two-way plug-in valve, be connected in parallel into second relief valve and the 3rd relief valve are arranged, realize overload protection and back pressure is provided for quick return.
Above-mentioned quick protecting against shock hydraulic system is that upper and lower cavity has all increased lets out plug-in unit in advance, the hydraulic shock when having reduced the high low pressure conversion with the difference of existing hydraulic system.Cavity of resorption parallel connection simultaneously the draining plug-in unit of a plurality of different sizes, can realize the classification pressure release.Solved two problems, one is quick oil feeding and oil extraction fast, is the hydraulic shock that has reduced when fast commentaries on classics is slow in addition.
The beneficial effect of the utility model is: the quick descending needed speed when the protecting against shock hydraulic system had both guaranteed the hydraulic press compacting fast, needed backhaul power when having guaranteed backhaul has again realized the fast function of snap back down, thereby has improved manufacturing efficiency.
Description of drawings
Accompanying drawing is the hydraulic schematic diagram of the utility model.
Among the figure: 1, first relief valve, 2, first two-way plug-in valve, 3, first two-position four-way solenoid valve, 4, second relief valve, 5, damping; 6, second two-position four-way solenoid valve, the 7, the 3rd relief valve, 8, second two-way plug-in valve, the 9, the 3rd two-way plug-in valve, the 10, the 3rd two-position four-way solenoid valve; 11, the 4th two-way plug-in valve, the 12, the 5th two-way plug-in valve, the 13, the 4th relief valve, 14, the rib valve; 15, the 4th two-position four-way solenoid valve, the 16, the 6th two-way plug-in valve, the 17, the 7th two-way plug-in valve, the 18, the 5th two-position four-way solenoid valve; 19, the 8th two-way plug-in valve, 20, solenoid valve, the 21, the 9th two-way plug-in valve, the 22, the 6th two-position four-way solenoid valve.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As shown in Figure 1; This fast protecting against shock hydraulic system comprise first two-way plug-in valve 2, second two-way plug-in valve 8, the 3rd two-way plug-in valve 9, the 4th two-way plug-in valve 11, the 5th two-way plug-in valve 12, the 6th two-way plug-in valve 16, the 7th two-way plug-in valve 17, the 8th two-way plug-in valve 19 and the 9th two-way plug-in valve 21 totally 9 two-way plug-in valves; First two-position four-way solenoid valve 3, second two-position four-way solenoid valve 6, the 3rd two-position four-way solenoid valve 10, the 4th two-position four-way solenoid valve 15, the 5th two-position four-way solenoid valve 18 and the 6th two-position four-way solenoid valve 22 be totally 6 two-position four-way solenoid valves; First relief valve 1, second relief valve 4, the 3rd relief valve 7 and the 4th relief valve 13 be totally 4 relief valves, and some corresponding dampings 5 and rib valve 14.Make first two-position four-way solenoid valve 10 of preparatory pressure release plug-in unit and control thereof at master cylinder epicoele device the 4th two-way plug-in valve 11, the impact when reducing high low pressure and switching; At master cylinder cavity of resorption parallel connection second two-way plug-in valve 8, the 8th two-way plug-in valve 19 and 21 3 draining plug-in units of the 9th two-way plug-in valve, can the classification pressure release, realize different quick downstream rates; Second two-way plug-in valve 8 is as Decompression valves, and pressure release is fast.Second relief valve 4, the 3rd relief valve 7 also are connected in the control port of second two-way plug-in valve 8, realize overload protection and back pressure are provided for quick return.Present embodiment second relief valve 4 is 25MPa, and the 3rd relief valve is 7-8MPa.
Control principle and process are following:
Descending fast: solenoid valve first two-position four-way solenoid valve 3, second two-position four-way solenoid valve 6, the 4th two-position four-way solenoid valve 15, solenoid valve 20 and the 6th two-position four-way solenoid valve 22 are switched on simultaneously; This moment, pressure oil was got into by P; Get into hydraulic press master cylinder epicoeles through first relief valve 1, second relief valve 4; Oil this moment of master cylinder cavity of resorption is at first through first two-way plug-in valve 2, then through second two-way plug-in valve 8, the 8th two-way plug-in valve 19 and the oil extractions fast simultaneously of 21 3 plug-in units of the 9th two-way plug-in valve.The size that can regulate the 8th two-way plug-in valve 19 and 21 two plug-in unit valve ports of the 9th two-way plug-in valve this moment is to reach needed speed.
Step-governor d: the draining plug-in unit that this moment can parallelly connected a plurality of different sizes; A plug-in unit was closed at every interval in 0.5 second; Draining speed has just progressively lowered like this; Simultaneously pressure also is slow decline, and final solenoid valve second two-position four-way solenoid valve 6, solenoid valve 20, the 6th two-position four-way solenoid valve 22 are closed, and first relief valve 1, first two-position four-way solenoid valve 3 and the 4th two-position four-way solenoid valve 15 are still switched on; At this moment the master cylinder cavity of resorption can keep certain back pressure through relief valve.There is enough backhaul power to prepare during for quick return.
Claims (1)
1. a novel quick protecting against shock hydraulic system comprises master cylinder, it is characterized in that: at the master cylinder epicoele the 4th two-way plug-in valve (11) of the impact when being used to reduce high low pressure and switching and first two-position four-way solenoid valve (10) of control thereof are housed; Be parallel with pressure plug-in unit second two-way plug-in valve (8), the 8th two-way plug-in valve (19), (21) three draining plug-in units of the 9th two-way plug-in valve at the master cylinder cavity of resorption, be used for the classification pressure release, realize different quick downstream rates; In the control port of second two-way plug-in valve (8), be connected in parallel into second relief valve (4) and the 3rd relief valve (7) are arranged, realize overload protection and back pressure is provided for quick return.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204751533U CN202360483U (en) | 2011-11-25 | 2011-11-25 | Fast anti-shock hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204751533U CN202360483U (en) | 2011-11-25 | 2011-11-25 | Fast anti-shock hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360483U true CN202360483U (en) | 2012-08-01 |
Family
ID=46571672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204751533U Expired - Lifetime CN202360483U (en) | 2011-11-25 | 2011-11-25 | Fast anti-shock hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360483U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154056A (en) * | 2014-07-30 | 2014-11-19 | 宁波恒力液压股份有限公司 | High-flow hydraulic reversing loop with interlocking function |
| CN105889160A (en) * | 2016-06-08 | 2016-08-24 | 湖北力帝机床股份有限公司 | Rapid hydraulic system of scrap steel shear |
| CN113757204A (en) * | 2021-10-18 | 2021-12-07 | 山东泰丰智能控制股份有限公司 | Intelligent control system of plate rolling machine |
-
2011
- 2011-11-25 CN CN2011204751533U patent/CN202360483U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154056A (en) * | 2014-07-30 | 2014-11-19 | 宁波恒力液压股份有限公司 | High-flow hydraulic reversing loop with interlocking function |
| CN104154056B (en) * | 2014-07-30 | 2016-05-04 | 宁波恒力液压股份有限公司 | A kind of high-volume hydraulic commutation loop with interlock function |
| CN105889160A (en) * | 2016-06-08 | 2016-08-24 | 湖北力帝机床股份有限公司 | Rapid hydraulic system of scrap steel shear |
| CN105889160B (en) * | 2016-06-08 | 2017-12-05 | 湖北力帝机床股份有限公司 | Steel scrap cuts quick hydraulic system |
| CN113757204A (en) * | 2021-10-18 | 2021-12-07 | 山东泰丰智能控制股份有限公司 | Intelligent control system of plate rolling machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120801 |