CN2490349Y - Electric controlled priority auxiliary valve capable of adjusting flow - Google Patents
Electric controlled priority auxiliary valve capable of adjusting flow Download PDFInfo
- Publication number
- CN2490349Y CN2490349Y CN 01236789 CN01236789U CN2490349Y CN 2490349 Y CN2490349 Y CN 2490349Y CN 01236789 CN01236789 CN 01236789 CN 01236789 U CN01236789 U CN 01236789U CN 2490349 Y CN2490349 Y CN 2490349Y
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- valve body
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Abstract
The utility model relates to an electric controlled priority auxiliary valve capable of adjusting flow of the hydraulic system of the loader digger, which can be overlapped at the oil inlet of a digging valve plate, and controlled by a two-position three-way magnetic valve. One valve is integrated five functional elements: a flow control valve core, a flow adjustment device, a safety cone-way valve, an auxiliary device system safety valve and a magnetic valve. A priority flow valve replaces a variable displacement pump system, which provides various flows of the hydraulic oil for the auxiliary oil hydraulic device. The utility model has the advantages of a simple structure and low manufacture cost.
Description
The utility model relates to a kind of engineering machinery hydraulic valve, exactly is a kind of automatically controlled preferential Auxiliary valves piece that loader-digger excavates the output of hydraulic system adjustable flow that is used for.
At present, the superiority of loader-digger maximum is to satisfy the needs of various operating mode a tractor serves several purposes, dispose increasing additional work device, the hydraulic flow difference that different additional work device needs, the rated flow that needs as hydraulic breaking hammer only are 1/2～1/3 of the loader-digger flow system flow that matches.As adopt the load sensing variable pump systems, and the range of flow that provides is wide, and energy saving of system is effective, but system's manufacture cost height, and oil cleanliness requires high, and assembling, maintenance difficulty are big, are difficult for guaranteeing.Adopt Constant Pump System, its rated flow is much larger than the traffic requirement of some additional devices, and system does not match, and has limited the using scope of loader-digger, needs special increase pumping source, like this, has not only increased manufacture cost, and system also becomes complicated more.
The purpose of this utility model provides the automatically controlled preferential Auxiliary valves piece of a kind of adjustable flow output, and he can not only simplied system structure, and can reduce the complete machine cost effectively under the situation of guaranteed performance.
But the purpose of this utility model is achieved in that organic integration flow control spool, flow bar mechanism, safety check valve, auxiliary device security of system valve and five functional element of solenoid valve in same valve body.
The utility model only needs on the excavator control valve body stack having the integrated valve block of five functions, and is simple in structure, cost is low, and output flow is adjustable, strong operability, has satisfied the requirement of the quick change additional device of different flow.
Concrete structure of the present utility model is provided by following examples and accompanying drawing.
Fig. 1 is the automatically controlled preferential Auxiliary valves piece according to the adjustable flow output that the utility model proposes.
Describe in detail according to details and the working condition that the utility model proposes below in conjunction with Fig. 1.
The utility model constitutes pressure-gradient control valve by valve body (1), priority spool (2), Returnning spring (3), flow rate regulating valve core (4), plug screw (5), regulating lever (6), stop screw (7), locking nut (8), pin (9) constitute the flow regulating mechanism, cooperating between flow rate regulating valve core (4) and valve body (1) is Spielpassung, adopts Sealing (10) sealing therebetween.
Relative movement between valve body (1) and priority spool (2) is a straight line motion, cooperates to be Spielpassung.The porose h of priority spool (2) communicates with the b chamber, and damping hole c makes the d chamber communicate with the f chamber.
The hole g of e chamber on Flow-rate adjustment spool (4) communicates with the b chamber.Poppet valve core (11), spring (12) constitute safety check valve, and cooperating between poppet valve core (11) and valve body (1) is Spielpassung.Oil pocket e communicates with the p chamber through poppet valve core (11) hole m, and the e chamber communicates with the q chamber through valve body (1) damping hole L.Auxiliary oil sources safety valve complement (13) is inserted on the valve body (1), and its filler opening communicates with the q chamber, and return opening communicates with the T chamber.Figure (1) is the sectional drawing when assisting oil sources not export fluid.Solenoid valve (14) filler opening communicates with the q chamber, and its oil outlet communicates with the f chamber.The valve oil road is excavated for leading in the W chamber.
When solenoid valve was charged, oil pocket q communicated with oil pocket f and oil pocket d, and the pressure oil in a chamber enters the b chamber through damping hole h, and under the effect of b cavity pressure, pressure spring (3) promotes priority spool (2) and moves to left, oil pump come oil all through the e chamber through the P confession toward auxiliary device.When solenoid valve was not charged, the fluid in f chamber and q chamber disconnected, and the fluid in d chamber communicates with f chamber and T chamber through damping hole c, b cavity pressure and spring (3) promote priority spool (2) and move right, damping hole h diminishes, and a small amount of hydraulic oil enters the b chamber through damping hole h, enters the e chamber through damping hole g, do not open poppet valve core (11), at this moment, spool (2) moves right, and also opens towards W chamber oil circuit, pressure oil enters the W chamber from a chamber, uses for excavating valve.
The stroke that priority spool (2) is moved to the left is corresponding with the aperture of damping hole g, and the stroke of priority spool (2) is set by the flow regulating mechanism, and therefore, the priority spool of diverse location (2) makes the aperture difference of damping hole g, and the flow of output is then different.The system pressure of auxiliary oil return apparatus is set by safety valve (13).
Claims (1)
1, a kind of automatically controlled preferential Auxiliary valves piece that is used for the adjustable flow output of loader-digger hydraulic system, it is characterized in that constituting the preferential flow metered valve by priority spool (2), spring (3) at same valve body, relative movement between valve body (1) and priority spool (2) is a straight line motion, cooperate and be Spielpassung, the porose h of priority spool (2) communicates with the b chamber, and damping hole c makes the d chamber communicate with the f chamber; Constitute the flow regulating mechanism by Flow-rate adjustment spool (4), plug screw (5), regulating lever (6), stop screw (7), locking nut (8), pin (9), cooperating between flow rate regulating valve core (4) and valve body (1) is Spielpassung, adopt Sealing (10) sealing therebetween, the hole g of e chamber on Flow-rate adjustment spool (4) communicates with the b chamber; Poppet valve core (11), spring (12) constitute safety check valve, and cooperating between poppet valve core (11) and valve body (1) is Spielpassung, and the e chamber communicates with the p chamber through poppet valve core (11) hole m, and the e chamber communicates with the q chamber through valve body (1) damping hole L; By auxiliary oil sources safety valve complement (13) initialization system pressure, be inserted on the valve body (1), its filler opening communicates with the q chamber, return opening communicates with the T chamber, control preferential output flow by two-position three way magnetic valve (14), filler opening communicates with the q chamber, and its oil outlet communicates with the f chamber; By hole h, hole g, e chamber damping hole L, damping hole c they are interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236789 CN2490349Y (en) | 2001-04-29 | 2001-04-29 | Electric controlled priority auxiliary valve capable of adjusting flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01236789 CN2490349Y (en) | 2001-04-29 | 2001-04-29 | Electric controlled priority auxiliary valve capable of adjusting flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2490349Y true CN2490349Y (en) | 2002-05-08 |
Family
ID=33649702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01236789 Expired - Fee Related CN2490349Y (en) | 2001-04-29 | 2001-04-29 | Electric controlled priority auxiliary valve capable of adjusting flow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2490349Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140808A (en) * | 2011-01-11 | 2011-08-03 | 徐州徐工挖掘机械有限公司 | Device for enhancing excavating handling characteristics and levelling operation characteristics of excavator |
| CN101978198B (en) * | 2008-03-25 | 2015-11-25 | 罗伯特.博世有限公司 | Valve |
| CN108266416A (en) * | 2018-01-25 | 2018-07-10 | 陈艳艳 | A kind of flow divider valve for double pump system |
-
2001
- 2001-04-29 CN CN 01236789 patent/CN2490349Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101978198B (en) * | 2008-03-25 | 2015-11-25 | 罗伯特.博世有限公司 | Valve |
| CN102140808A (en) * | 2011-01-11 | 2011-08-03 | 徐州徐工挖掘机械有限公司 | Device for enhancing excavating handling characteristics and levelling operation characteristics of excavator |
| CN102140808B (en) * | 2011-01-11 | 2012-05-23 | 徐州徐工挖掘机械有限公司 | Device for enhancing excavation-handling characteristics and levelling operation characteristics of excavator |
| CN108266416A (en) * | 2018-01-25 | 2018-07-10 | 陈艳艳 | A kind of flow divider valve for double pump system |
| CN108266416B (en) * | 2018-01-25 | 2019-07-12 | 宁波日安精工机械有限公司 | A kind of flow divider valve for double pump system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG CONSTRUCTION MACHINERY GROUP CO., LTD. Free format text: FORMER NAME OR ADDRESS: SHANDONG ENGINEERING MACHINERY PLANT |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Shandong SEM Machinery Co., Ltd. Patentee before: Shandong Engineering Machiner Factory |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020508 Termination date: 20100429 |