CN201696376U - Hydraulic pressure compensator - Google Patents
Hydraulic pressure compensator Download PDFInfo
- Publication number
- CN201696376U CN201696376U CN2010202450039U CN201020245003U CN201696376U CN 201696376 U CN201696376 U CN 201696376U CN 2010202450039 U CN2010202450039 U CN 2010202450039U CN 201020245003 U CN201020245003 U CN 201020245003U CN 201696376 U CN201696376 U CN 201696376U
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- CN
- China
- Prior art keywords
- valve
- shuttle valve
- pressure oil
- fixed differential
- differential reducing
- 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
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Abstract
The utility model discloses a hydraulic pressure compensator. The compensator comprises two fixed differential reducing valves arranged on a pressure oil path. Each fixed differential reducing valve consists of a plug, a servo spring, a valve bushing and a valve core. The fixed differential reducing valves are connected to the pressure oil path in parallel. A shuttle valve is also arranged on the pressure oil path, the shuttle valve consists of a shuttle valve plug, a shuttle valve bushing and a steel ball. The steel ball is arranged in the shuttle valve bushing, the two ends of the shuttle valve bushing are respectively communicated with the pressure oil path, and the middle of the shuttle valve bushing is connected with the end surfaces of the valve cores of both of the two fixed differential reducing valves by control oil paths. The utility model has the characteristics of simple design, convenient maintenance, large flow, etc. The compensator can be broadly used in various hydraulic equipments.
Description
Technical field
The utility model relates to a kind of compensation hydraulic device that is used for hydraulic equipment.
Background technique
Hydraulic equipment often needs to carry out compensation hydraulic, and also do not having special compensation hydraulic device on the market at present, in existing design of Hydraulic System, the function of compensation hydraulic device normally is designed to be made up of several valve elements such as single reduction valve, shuttle valves in whole oil circuit, this design is required great effort very much, processing is difficulty also, the more important thing is that maintenance is inconvenient.In addition, the function element of compensation hydraulic device often needs to be used in combination together with proportional reversing valve in actual applications, in use often run into such problem, when the flow of passing ratio valve increases the through-current capacity of the function element that surpasses the compensation hydraulic device, can cause the sharp pounding of actuator, influence the operation of equipment greatly.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of caution effect tangible more a kind of compensation hydraulic device.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of compensation hydraulic device, comprise the Fixed differential reducing valve that is positioned on the pressure oil circuit, described Fixed differential reducing valve is by plug, servo spring, valve pocket and spool are formed, the quantity of described Fixed differential reducing valve is two, be connected in parallel on the pressure oil circuit, on the pressure oil circuit, also be provided with shuttle valve, described shuttle valve is by the shuttle valve plug, shuttle valve valve pocket and steel ball are formed, described steel ball is arranged in the shuttle valve valve pocket, the two ends of shuttle valve valve pocket respectively with pressure oil circuit UNICOM, the middle part of shuttle valve valve pocket is by the equal UNICOM of spool end of control oil channel and two Fixed differential reducing valves.
The beneficial effects of the utility model are: the utility model is made up of two Fixed differential reducing valves and shuttle valve, can form an independent valve member, in design of Hydraulic System, only needing directly increases on original valve assembly, Design of Hydraulic System is simplified greatly, keep in repair also very conveniently, only need just can finish the save trouble and labor by the several screws of dismounting; The utility model adopts the double spool design in addition, and its through-current capacity is also bigger than the through-current capacity of hydraulic proportion valve, has solved the problem of actuator's sharp pounding well.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is asphalt principle figure of the present utility model;
Fig. 3 is specific embodiment excavator rocking arm lifting control loop figure.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, Fig. 2, a kind of compensation hydraulic device comprises the Fixed differential reducing valve 1 that is positioned on the pressure oil circuit, and Fixed differential reducing valve 1 is made up of plug 101, servo spring 102, valve pocket 103 and spool 104, spool 104 is installed in the valve pocket 103, and servo spring 102 is installed between plug 101 and the spool 104.The quantity of Fixed differential reducing valve 1 is two, be connected in parallel on the pressure oil circuit, on the pressure oil circuit, also be provided with shuttle valve 2, shuttle valve 2 is made up of shuttle valve plug 201, shuttle valve valve pocket 202 and steel ball 203, steel ball 203 is arranged in shuttle valve valve pocket 202, the two ends of shuttle valve valve pocket 202 respectively with pressure oil circuit UNICOM, the middle part of shuttle valve valve pocket 202 is by the equal UNICOM of spool 104 end faces of control oil channel and two Fixed differential reducing valves 1.The working principle of shuttle valve 2 is: when oilhole 11 is high pressure oil, when oilhole 12 be low pressure oil, that steel ball 203 was sealed oilhole 8, and oilhole 10 unclamps, and oilhole 10 communicates with oilhole 7, controlled oilyly to enter into the relief pressure valve cartridge end face from oilhole 11.Working as oilhole 12 equally is high pressure oil, and when oilhole 11 was low pressure oil, that steel ball 203 was sealed oilhole 20, and oilhole 8 unclamps, and oilhole 8 communicates with oilhole 7, and control oil enters into the relief pressure valve cartridge end from oilhole 12, and shuttle valve plays the effect of a conversion and control oil.
Working principle of the present utility model is: system pressure oil advances from oilhole 6, through oil-through hole 3, arrive oilhole 4 again, come out from oilhole 5, control oil from oilhole 11 through oil-through hole 10, oilhole 9 or from oilhole 12 through oil-through hole 7, oilhole 9 enters an end face of relief pressure valve cartridge, act on together on the spool 104 of Fixed differential reducing valve 1 with servo spring 102, when outer load variations causes the variation in pressure of oilhole 11 or oilhole 12, servo spring 102 actions, promote spool 104 motions, when outer induced pressure became big, the area of passage of the oilhole of spool 104 and valve pocket 103 increased, thereby reduced the flowed friction of spool 104 and valve pocket 103, when outer induced pressure diminishes, the area of passage of the oilhole of spool 104 and valve pocket 103 reduces, thereby has increased the flowed friction of spool 104 and valve pocket 103, has compensated the variation of induced pressure.Like this, still diminished no matter induced pressure has become big, the pressure reduction by Fixed differential reducing valve 1 all is a definite value.
As shown in Figure 3, this is the application of the utility model in the lifting of excavator rocking arm, pressure oil enters two Fixed differential reducing valves 1 simultaneously from oilhole 16, arrive proportional reversing valve 14 through Fixed differential reducing valve 1 decompression back, proportional reversing valve 14 commutates to a direction, pressure oil comes out from oil pipe 19, arrive oil cylinder 13 rodless cavities 21, pressure oil also enters shuttle valve 2 simultaneously, control through spool 104 end faces that oil-through hole 17 arrives two Fixed differential reducing valves 1, making the front and back pressure reduction that enters proportional reversing valve 14 is exactly the difference of deciding of Fixed differential reducing valve, and the rod chamber 20 of oil cylinder 13 is communicated with oil sump tank through proportional reversing valve 14 with oilhole 15, and oil cylinder 13 is done descending motion.Proportional reversing valve 14 commutates to another direction, pressure oil comes out from oil pipe 18, arrive oil cylinder 13 rod chambers 20, pressure oil also enters shuttle valve 2 simultaneously, control through spool 104 end faces that oil-through hole 17 arrives two Fixed differential reducing valves 1, making the front and back pressure reduction that enters proportional reversing valve 14 is exactly the difference of deciding of Fixed differential reducing valve 1, and the rodless cavity 21 of oil cylinder 13 is communicated with oil sump tank through proportional reversing valve 14 with oilhole 15, and oil cylinder 13 is done ascending motion.Though oil cylinder load variations in movement process is very big, because the pressure compensation effect of compensator, making the flow of proportional reversing valve output is a definite value all the time, has kept the constant of oil cylinder speed.
More than though mode of execution of the present utility model has been described in conjunction with the accompanying drawings, those skilled in the art can make various distortion or modification within the scope of the appended claims.
Claims (1)
1. compensation hydraulic device, comprise the Fixed differential reducing valve that is positioned on the pressure oil circuit, described Fixed differential reducing valve is made up of plug, servo spring, valve pocket and spool, it is characterized in that, the quantity of described Fixed differential reducing valve is two, be connected in parallel on the pressure oil circuit, on the pressure oil circuit, also be provided with shuttle valve, described shuttle valve is made up of shuttle valve plug, shuttle valve valve pocket and steel ball, described steel ball is arranged in the shuttle valve valve pocket, the two ends of shuttle valve valve pocket respectively with pressure oil circuit UNICOM, the middle part of shuttle valve valve pocket is by the equal UNICOM of spool end of control oil channel and two Fixed differential reducing valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202450039U CN201696376U (en) | 2010-06-30 | 2010-06-30 | Hydraulic pressure compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202450039U CN201696376U (en) | 2010-06-30 | 2010-06-30 | Hydraulic pressure compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201696376U true CN201696376U (en) | 2011-01-05 |
Family
ID=43397619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202450039U Expired - Fee Related CN201696376U (en) | 2010-06-30 | 2010-06-30 | Hydraulic pressure compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201696376U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367817A (en) * | 2011-11-17 | 2012-03-07 | 大连华锐股份有限公司 | Inlet pressure compensator in hydraulic control loop |
| EP2704162A1 (en) * | 2012-08-29 | 2014-03-05 | ABB Technology AG | Pressure Compensator |
| CN104296910A (en) * | 2013-11-19 | 2015-01-21 | 中航光电科技股份有限公司 | Underwater separable connector test device |
| CN107489879A (en) * | 2017-08-31 | 2017-12-19 | 中信重工机械股份有限公司 | Lubricating arrangement with Flow-rate adjustment and distribution priority |
| CN111827928A (en) * | 2020-07-23 | 2020-10-27 | 邵玉刚 | Check valve for underground double-layer coiled tubing |
| CN112555205A (en) * | 2020-12-14 | 2021-03-26 | 北京三一智造科技有限公司 | Rotary hydraulic system and engineering machinery |
-
2010
- 2010-06-30 CN CN2010202450039U patent/CN201696376U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102367817A (en) * | 2011-11-17 | 2012-03-07 | 大连华锐股份有限公司 | Inlet pressure compensator in hydraulic control loop |
| EP2704162A1 (en) * | 2012-08-29 | 2014-03-05 | ABB Technology AG | Pressure Compensator |
| WO2014033063A1 (en) * | 2012-08-29 | 2014-03-06 | Abb Technology Ag | Pressure compensator |
| RU2590886C1 (en) * | 2012-08-29 | 2016-07-10 | Абб Текнолоджи Аг | Pressure compensator |
| US9759241B2 (en) | 2012-08-29 | 2017-09-12 | Abb Schweiz Ag | Pressure compensator |
| CN104296910A (en) * | 2013-11-19 | 2015-01-21 | 中航光电科技股份有限公司 | Underwater separable connector test device |
| CN107489879A (en) * | 2017-08-31 | 2017-12-19 | 中信重工机械股份有限公司 | Lubricating arrangement with Flow-rate adjustment and distribution priority |
| CN111827928A (en) * | 2020-07-23 | 2020-10-27 | 邵玉刚 | Check valve for underground double-layer coiled tubing |
| CN112555205A (en) * | 2020-12-14 | 2021-03-26 | 北京三一智造科技有限公司 | Rotary hydraulic system and engineering machinery |
| CN112555205B (en) * | 2020-12-14 | 2023-09-12 | 北京三一智造科技有限公司 | Rotary hydraulic system and engineering machinery |
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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: 20110105 Termination date: 20190630 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |