CN101839263A - Load sensing electro-hydraulic proportional multi-way reversing valve - Google Patents
Load sensing electro-hydraulic proportional multi-way reversing valve Download PDFInfo
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- CN101839263A CN101839263A CN200910030314A CN200910030314A CN101839263A CN 101839263 A CN101839263 A CN 101839263A CN 200910030314 A CN200910030314 A CN 200910030314A CN 200910030314 A CN200910030314 A CN 200910030314A CN 101839263 A CN101839263 A CN 101839263A
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Abstract
The invention relates to a load sensing electro-hydraulic proportional multi-way reversing valve, which consists of an oil inlet valve, at least two electro-hydraulic proportional reversing valves, an oil return end cover and a controller, wherein the oil inlet valve is provided with an oil inlet and an oil return port, the electro-hydraulic proportional reversing valves are respectively provided with a working oil port, and the oil inlet and the oil return port on the oil inlet valve are connected via a prepressing valve and a relief valve; the electro-hydraulic proportional reversing valve is provided with a driving valve chamber, a control valve chamber, a control valve core and a decompression proportional control valve, and the control valve core is movably connected in the control valve chamber and is connected with the decompression proportional control valve which drives the control valve core to move back and forth in a straight line; the decompression proportional control valve is connected with the controller; and a storage chip which records the procedures for regulating the driving force numerical value of the decompression proportional control valve according to the real-time oil pressure at the oil inlet is arranged in the controller. The controller of the invention can control the electro-hydraulic proportional multi-way reversing valves independently or simultaneously, the controller conveniently realizes long-distance control or remote control, and can realize multi-channel parallel control.
Description
Technical field
The present invention relates to the multipath hydraulic integrated control device, relate to a kind of load sensing electro-hydraulic proportional multi-way reversing valve, the equipment, the vehicle that are mainly used in having a plurality of hydraulic operation mechanism carry out integrated control.
Background technique
Multiple directional control valve is to be the combination brake switch and proporting of main body by plural reversing slide valve.This product can be widely used in various engineering machinery, farm machinery and mining machinery, as is applied to hoist, controls its flexible, the arm width of cloth, action such as turn round, hoist.The executive component that multiple directional control valve will be controlled has a plurality of (more than at least two), the load of these executive components varies in size, and oil sources is by the configuration of the sum total of these bearing powers, and when having only an executive component action, the excess energy of oil sources has just slatterned in vain like this.
At present, the load sensing electro-hydraulic proportional multi-way reversing valve of the bright hydraulic pressure of Jiangdu ancient cooking vessel Co., Ltd research and development on the one hand, can be adjusted the oil circuit total pressure in real time, avoids energy loss; On the other hand, electromagnetism on each selector valve decompression proportional control valve can be accepted the instruction of controller respectively and work respectively, can realize that many actuators move simultaneously.We find in the application, the load sensing technology can effectively reduce system power dissipation, but when the oil circuit total pressure is raised or reduces, the oil pressure of electromagnetism decompression proportional control valve drive controlling spool is also changing, the real-time status of oil circuit just can not be suitable with the electromagnetic actuation force of realizing same movement range, feasible operation is difficult to control, and then makes smart moving, fine motion be difficult to be protected.
Summary of the invention
The present invention is directed to the problems of the prior art, a kind of variation according to oil circuit pressure is provided, the driving current of compensation electromagnetic decompression proportional control valve, thus realize accurate, fine motion, the load sensing electro-hydraulic proportional multi-way reversing valve of being convenient to control.
Technological scheme of the present invention is: be made up of oiling valve, at least two electro-hydraulic proportion reversing valves, oil return end cap, controllers, establish filler opening, return opening on the oiling valve, establish actuator port on each electro-hydraulic proportion reversing valve respectively, the filler opening on the oiling valve links to each other by precompression valve, relief valve with return opening; Electro-hydraulic proportion reversing valve is provided with and drives valve pocket, control valve pocket, control spool, decompression proportional control valve, and the control spool is movably connected in the control valve pocket, and with drive its decompression proportional control valve of doing straight reciprocating motion and link to each other; The decompression proportional control valve links to each other with controller; Establish in the controller and record the storage chip of regulating the program of decompression proportional control valve driving force numerical value according to the real-time oil pressure of filler opening.
Driving valve pocket links to each other by damping hole with the control valve pocket.
Controller of the present invention can be controlled respectively each electro-hydraulic proportional multi-way reversing valve independent or a plurality ofly, when system's total pressure reduces, when being the control-oil pressure reduction, can cause the driving force deficiency of changeover valve core, at this moment, controller of the present invention can increase the driving current of electromagnetism decompression proportional control valve according to the variation of total pressure, increase the opening amount of control spool, to remedy the deficiency of driving force.Controller of the present invention is convenient to realize distant control or remote control, also can improve the design flexibility of main frame, and can realize multi-channel parallel control.For example, the manual multiple-way valve in the engineering machinery must be concentrated usually and be arranged on control cab, so that link with operating link, this just makes the connecting pipeline of each controlled hydraulic element prolong, increase the complexity of system, also increased line loss, also very unfavorable to dynamic characteristic.Adopt electro-hydraulic proportional multi-way reversing valve to replace manual multiple-way valve, valve might be arranged in only position, improved the flexibility of main frame general arrangement, also very favourable to reducing line loss and improving operating characteristics, but also can be designed to portable or a plurality of electric control operations station, to adapt to the request for engineering action of different occasions, perhaps realize the safety control of many nargin.At last, damping hole of the present invention makes to drive oil mass output accurately, has further ensured fine motion, smart moving realization.
Description of drawings
Fig. 1 is a structural representation of the present invention
1 is oiling valve among the figure, the 2nd, and relief valve, the 3rd, electro-hydraulic proportion reversing valve, the 4th, overload valve, the 5th, decompression proportional control valve, the 6th, oil return end cap, the 7th, recuperation valve, the 8th, precompression valve;
Fig. 2 is an A-A sectional view among Fig. 1
9 is control spools among the figure, the 10th, and damping hole.
Fig. 3 is a schematic diagram of the present invention
Embodiment
The present invention as shown in Figure 1, 2, 3, form by oiling valve 1, at least two electro-hydraulic proportion reversing valves 3, oil return end cap 6, controllers, establish filler opening, return opening on the oiling valve 1, establish actuator port respectively on each electro-hydraulic proportion reversing valve 3, the filler opening on the oiling valve 1 links to each other by precompression valve 8, relief valve 2 with return opening; Electro-hydraulic proportion reversing valve 3 is provided with recuperation valve 7, decompression proportional control valve 5, driving valve pocket, control valve pocket, control spool 10, and control spool 10 is movably connected in the control valve pocket, and links to each other with its decompression proportional control valve 5 of doing straight reciprocating motion of driving; Decompression proportional control valve 5 links to each other with controller; Establish in the controller and record the storage chip of regulating the program of decompression proportional control valve driving force numerical value according to the real-time oil pressure of filler opening.
Driving valve pocket links to each other by damping hole 9 with the control valve pocket.
On actuator port, overload valve 4 can also be set.
Claims (2)
1. load sensing electro-hydraulic proportional multi-way reversing valve, form by oiling valve, at least two electro-hydraulic proportion reversing valves, oil return end cap, controllers, establish filler opening, return opening on the oiling valve, establish actuator port on each electro-hydraulic proportion reversing valve respectively, it is characterized in that the filler opening on the oiling valve links to each other by precompression valve, relief valve with return opening; Electro-hydraulic proportion reversing valve is provided with and drives valve pocket, control valve pocket, control spool, decompression proportional control valve, and the control spool is movably connected in the control valve pocket, and with drive its decompression proportional control valve of doing straight reciprocating motion and link to each other; The decompression proportional control valve links to each other with controller; Establish in the controller and record the storage chip of regulating the program of decompression proportional control valve driving force numerical value according to the real-time oil pressure of filler opening.
2. a kind of load sensing electro-hydraulic proportional multi-way reversing valve according to claim 1 is characterized in that, drives valve pocket and links to each other by damping hole with the control valve pocket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030314A CN101839263A (en) | 2009-03-19 | 2009-03-19 | Load sensing electro-hydraulic proportional multi-way reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910030314A CN101839263A (en) | 2009-03-19 | 2009-03-19 | Load sensing electro-hydraulic proportional multi-way reversing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101839263A true CN101839263A (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910030314A Pending CN101839263A (en) | 2009-03-19 | 2009-03-19 | Load sensing electro-hydraulic proportional multi-way reversing valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN101839263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664492A (en) * | 2019-10-16 | 2021-04-16 | 沈阳新松机器人自动化股份有限公司 | Double-valve-group parallel control hydraulic system |
-
2009
- 2009-03-19 CN CN200910030314A patent/CN101839263A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664492A (en) * | 2019-10-16 | 2021-04-16 | 沈阳新松机器人自动化股份有限公司 | Double-valve-group parallel control hydraulic system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100922 |