CN1644933A - Differential speed accelerating circuits - Google Patents
Differential speed accelerating circuits Download PDFInfo
- Publication number
- CN1644933A CN1644933A CN 200510038137 CN200510038137A CN1644933A CN 1644933 A CN1644933 A CN 1644933A CN 200510038137 CN200510038137 CN 200510038137 CN 200510038137 A CN200510038137 A CN 200510038137A CN 1644933 A CN1644933 A CN 1644933A
- Authority
- CN
- China
- Prior art keywords
- valve
- way
- links
- oil cylinder
- differential speed
- 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.)
- Granted
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A differential accelerate circle for hydraulic system's acceleration comprises oil cylinder, an one-way sequence valve, an one-way valve and a rotary valve. Oil cylinder links to the one-way sequence valve and the one-way valve on its lever side, and the working port of the one-way sequence valve links to the working channel of the rotary valve while the one-way valve links to the oil inlet port of the rotary valve, and the working channel of the rotary valve links to the oil cylinder to the side without lever.
Description
Technical field:
The present invention relates to a kind of novel differential speed accelerating circuits.Be mainly used in the speedup of hydraulic system.
Background technique:
Traditional differential speed accelerating circuits as shown in Figure 1.It is a difference of utilizing asymmetric servo cylinder piston compression area, allows oil hydraulic cylinder have the fluid of bar side to turn back to no bar side when the piston rod extend stroke, thereby realizes speedup.It is effective that this loop still has the occasion of enough ouput forces after for the counter-force that the bar side is arranged at deduction.Fluid can return no bar side through sequence valve among Fig. 1, and when no-load was advanced, the Pilot operated check valve of oil return side was closed, and fluid returns no bar side through sequence valve, forms differential reversing, and oil hydraulic cylinder advances fast; When carrying pressure rising is arranged, and Pilot operated check valve is opened, and has the bar side to communicate with fuel tank, and the pressure of no bar side effectively is being added in the load, and this moment, oil hydraulic cylinder advanced with work speed.This loop has the following disadvantages:
1, differential conversion of advancing to the worker fast is subjected to the restriction of the cracking pressure of hydraulically-controlled one-way valve, does not have adjustability.
2, backhaul pressure is subjected to the restriction of order pressure regulating valve, and working pressure is lower, and functional reliability is not strong.
Therefore, the quick Cross fade of this differential speed accelerating circuits and answering a little less than the workload-adaptability.
Summary of the invention:
The objective of the invention is to overcome above-mentioned deficiency, a kind of quick Cross fade is provided and answers the strong novel differential speed accelerating circuits of workload-adaptability.
The object of the present invention is achieved like this: a kind of novel differential speed accelerating circuits, it comprises oil cylinder, one way sequence valve, one-way valve and selector valve, oil cylinder has the bar side to link to each other with one-way valve with one way sequence valve respectively, the working hole of one way sequence valve links to each other with the active chamber of selector valve, one-way valve links to each other with the oil suction chamber of selector valve, and the active chamber of selector valve links to each other with the no bar side of oil cylinder.
When oil cylinder advanced, fluid entered no bar side through selector valve, and when no-load was advanced, one way sequence valve was in closed condition, and had bar side fluid to return fuel tank through one-way valve, returned no bar side through selector valve again, formed differential circuit, and oil hydraulic cylinder advances fast; And when no bar side oil liquid pressure rises to the sequence valve set pressure, sequence valve is opened, thereby bar side fluid is communicated with fuel tank through one way sequence valve and selector valve, the pressure reduction of one-way valve formation therebetween is in self-enclosed state, the pressure of no bar side effectively is being added in the load, and this moment, oil hydraulic cylinder advanced with work speed.When load was lower than the one way sequence valve set pressure, oil cylinder advanced fast with differential again, and this loop has quick Cross fade and answers characteristics such as workload-adaptability is strong, and functional reliability is strong, and no hydraulic pressure impacts.Compare with conventional oil hydraulic circuit, it is fast to automatically switch, and does not need electrical control, increases the reliability and the anti-interference of whole system, and backhaul does not have influence.But this loop speedup about 50%, promptly work efficiency improves 50%.Can save energy 30%.
Description of drawings:
Fig. 1 is original differential speed accelerating circuits hydraulic schematic diagram.
Fig. 2 is differential speed accelerating circuits embodiment one hydraulic schematic diagram of the present invention.
Fig. 3 is differential speed accelerating circuits embodiment two hydraulic schematic diagrams of the present invention.
Fig. 4 is differential speed accelerating circuits embodiment three hydraulic schematic diagrams of the present invention.
Fig. 5 is differential speed accelerating circuits embodiment four hydraulic schematic diagrams of the present invention.
Embodiment:
Embodiment one:
As Fig. 2, a kind of novel differential speed accelerating circuits mainly is made up of oil cylinder 1, one way sequence valve 2, one-way valve 3 and selector valve 4.Oil cylinder 1 has the bar side to link to each other with one-way valve 3 with one way sequence valve 2 respectively, and the working hole of one way sequence valve 2 links to each other with the active chamber of selector valve 4, and one-way valve 3 links to each other with the oil suction chamber of selector valve 5, and the active chamber of selector valve 4 links to each other with the no bar side of oil cylinder 1.
Embodiment two:
As Fig. 3, embodiment two only is serial connection sequence valve 5 on the one-way valve 3 with embodiment one difference, and it is anti-from falling to play balanced action when oil cylinder is vertically placed.
Embodiment three:
Embodiment three only is that with embodiment one difference the outside control mouth of one way sequence valve 2 links to each other with oil cylinder 1 no bar side, works to open or close one way sequence valve 2.
Embodiment four:
As Fig. 4, embodiment four is serial connection sequence valve 5 on the one-way valve 3 with embodiment one difference; The outside control mouth of one way sequence valve 2 links to each other with oil cylinder 1 no bar side.
Claims (3)
1, a kind of novel differential speed accelerating circuits, it is characterized in that it comprises oil cylinder (1), one way sequence valve (2), one-way valve (3) and selector valve (4), oil cylinder (1) has the bar side to link to each other with one-way valve (3) with one way sequence valve (2) respectively, the working hole of one way sequence valve (2) links to each other with the active chamber of selector valve (4), one-way valve (3) links to each other with the oil suction chamber of selector valve (5), and the active chamber of selector valve (4) links to each other with the no bar side of oil cylinder (1).
2, a kind of novel differential speed accelerating circuits according to claim 1 is characterized in that upward serial connection sequence valve (5) of one-way valve (3).
3, a kind of novel differential speed accelerating circuits according to claim 1 and 2 is characterized in that the outside control mouth of one way sequence valve (2) links to each other with the no bar side of oil cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100381377A CN1328515C (en) | 2005-01-17 | 2005-01-17 | Differential speed accelerating circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100381377A CN1328515C (en) | 2005-01-17 | 2005-01-17 | Differential speed accelerating circuits |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1644933A true CN1644933A (en) | 2005-07-27 |
| CN1328515C CN1328515C (en) | 2007-07-25 |
Family
ID=34876216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100381377A Expired - Fee Related CN1328515C (en) | 2005-01-17 | 2005-01-17 | Differential speed accelerating circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1328515C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655115A (en) * | 2009-08-27 | 2010-02-24 | 刘放 | Hydraulic cylinder with sequence valve |
| CN107514396A (en) * | 2017-10-12 | 2017-12-26 | 徐州徐工随车起重机有限公司 | One kind regeneration hydraulic lock |
| CN108180177A (en) * | 2017-12-26 | 2018-06-19 | 邵立坤 | It is a kind of for the hydraulic valve of differential circuit and hydraulic differential circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4098377A (en) * | 1977-04-08 | 1978-07-04 | Towmotor Corporation | Synchronized creep and brake control |
| JP3190618B2 (en) * | 1998-07-14 | 2001-07-23 | 株式会社タグチ工業 | Hydraulic system branch circuit to construction machine work attachment |
| CN2373490Y (en) * | 1999-05-06 | 2000-04-12 | 徐晓理 | Quick tunneling loader |
| JP3474840B2 (en) * | 2000-09-11 | 2003-12-08 | 株式会社南武 | Hydraulic cylinder pressure booster |
| CN2758541Y (en) * | 2005-01-17 | 2006-02-15 | 江苏华宏科技股份有限公司 | Differential accelerating loop |
-
2005
- 2005-01-17 CN CNB2005100381377A patent/CN1328515C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655115A (en) * | 2009-08-27 | 2010-02-24 | 刘放 | Hydraulic cylinder with sequence valve |
| CN101655115B (en) * | 2009-08-27 | 2013-03-27 | 刘放 | Hydraulic cylinder with sequence valve |
| CN107514396A (en) * | 2017-10-12 | 2017-12-26 | 徐州徐工随车起重机有限公司 | One kind regeneration hydraulic lock |
| CN108180177A (en) * | 2017-12-26 | 2018-06-19 | 邵立坤 | It is a kind of for the hydraulic valve of differential circuit and hydraulic differential circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1328515C (en) | 2007-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2869408Y (en) | Load feedback combination valve | |
| CN102425578A (en) | Novel double-motor serial-parallel automatic switching device | |
| CN101560999B (en) | Large-flow quick throttle proportional valve | |
| CN203532390U (en) | Hydraulic cylinder quick motion loop and engineering machine | |
| CN2844532Y (en) | Multi-path switching valve of hydraulic crane | |
| CN102536932A (en) | Compression refuse collector and hydraulic system thereof | |
| CN202402380U (en) | Compression garbage truck and hydraulic system thereof | |
| CN2885800Y (en) | Hydraulic elevator | |
| CN1644933A (en) | Differential speed accelerating circuits | |
| CN2758541Y (en) | Differential accelerating loop | |
| CN2837570Y (en) | Pneumatic control device for hydraulic unloading mechanism of self-unloading vehicle | |
| CN101699080B (en) | Hydraulic motor controller | |
| CN2703909Y (en) | Two-oil-circuit micro hydraulic pump station | |
| CN101696709B (en) | High-speed switching type multifunctional servo valve | |
| CN109779996A (en) | A kind of multifunction valve of control rice transplanter seedling platform lifting | |
| CN201116554Y (en) | Multi-port valve with lock | |
| CN106762903A (en) | Multiple directional control valve | |
| CN201136440Y (en) | Hydraulic cylinder and drive apparatus for accelerating and braking for automobile | |
| CN101251135A (en) | Hydraulic cylinder as well as drive unit for accelerating and braking vehicle | |
| CN2856537Y (en) | Oil pressure system of cut-off machine | |
| CN209671301U (en) | A kind of multifunction valve of control rice transplanter seedling platform lifting | |
| CN110862047A (en) | Hydraulic control device and method for explosion-proof synchronous circuit for elevator | |
| CN2802149Y (en) | Forklift multiple directional control valve | |
| CN102465934A (en) | Hydraulic system | |
| CN201407221Y (en) | Large-capacity quick throttling proportional valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20070725 Termination date: 20170117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |