CN102588369B - Numerical control hydraulic control unit - Google Patents
Numerical control hydraulic control unit Download PDFInfo
- Publication number
- CN102588369B CN102588369B CN201210042125.1A CN201210042125A CN102588369B CN 102588369 B CN102588369 B CN 102588369B CN 201210042125 A CN201210042125 A CN 201210042125A CN 102588369 B CN102588369 B CN 102588369B
- Authority
- CN
- China
- Prior art keywords
- valve body
- main
- main valve
- valve
- oil
- 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
Links
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The invention relates to a numerical control hydraulic control unit. The numerical control hydraulic control unit comprises a valve body, a main valve core and a valve rod, which are coaxial, an oil outlet of the main valve core is respectively communicated with an oil supply distribution groove and s valve rod oil channel in the main valve core; an oil return port of the main valve core is respectively communicated with an oil return distribution groove, a valve body oil return channel and a main oil return port in the main valve core; a main hole of the valve body is a blind hole, a first servo motor is installed at an opening end of the valve body, an output shaft of the first servo motor is connected with a power input end of a first electromagnetic clutch, and the first electromagnetic clutch is connected with the main valve core by a deflector rod device; a second electromagnetic clutch is installed at the rear end of the valve rod, one of the two electromagnetic clutches is on, the other electromagnetic clutch is off, and the output end of the second electromagnetic clutch is connected with a transmission screw rod; and a transmission screw nut is screwed at the front end of the transmission screw rod, and the periphery of the transmission screw nut is connected with the main valve core by a combination bearing and a check ring. The numerical control hydraulic control unit drives the main valve core to rotate or move axially by the servo motor, is small in appearance size and convenient to control.
Description
Technical field
The present invention relates to a kind of numerical control hydraulic control unit, can control multiple hydraulic pressure actuators selectively.
Background technique
Existing Hydraulic Field is divided hydraulic transmission and hydraulic control two classes.Hydraulic Power Transmission System is taking transferring power as main, and its system is made up of standard or special switch type hydraulic element, and the control accuracy of actuator movement parameter is lower, and system is worked under open loop situations.Hydraulic control system emphasis information is transmitted, to reach hydraulic actuator kinematic parameter (as travel speed, displacement amount, rotating speed or corner) accurate control be main, its systems control division divides servo apply hydraulic pressure mechanism, the kinematic parameter of executive component can accurately be controlled, and system is worked under closed loop state.
On September 14th, 2011, publication number is the Chinese utility model patent of CN201972981U, the digital hydraulic control device of the multiple operating cylinders of a kind of Selective Control is disclosed, comprise valve casing, main valve plug and the valve rod of coaxial line, valve rod is installed in the mesopore of main valve plug, main valve plug is cylindrical body, and the cylndrical surface of main valve plug coordinates with the inner wall of main hole liquid sealing of valve casing; Many groups valve casing oil outlet and valve casing that valve casing is provided with the total filler opening being connected with pressure oil-source pressure oil and the total return opening being connected with pressure oil-source fuel tank, be connected respectively with multiple operating cylinders return hydraulic fluid port; The cylndrical surface of main valve plug is provided with the main valve plug oil outlet that multiple and total filler opening is communicated with, the main valve plug that multiple and total return opening is communicated with returns hydraulic fluid port, each main valve plug oil outlet can dock with each valve casing oil outlet respectively, and each main valve plug returns hydraulic fluid port and can return hydraulic fluid port with each valve casing respectively and dock.Spool rotating several angle is just connected different valve casing oil outlet and valve casing and is returned hydraulic fluid port, devotes oneself to work thereby make to return with this valve casing oil outlet and valve casing the operating cylinder that hydraulic fluid port is connected; Equally, poppet shaft also can be connected different valve casing oil outlet and valve casing and returns hydraulic fluid port to moving a certain distance, and makes to return with this valve casing oil outlet and valve casing the operating cylinder that hydraulic fluid port is connected and devotes oneself to work.
There is following deficiency in this hydraulic control device:
(1) control the angular displacement of spool by actuating motor one, actuating motor two is controlled the axial displacement of spool, and actuating motor three is controlled return pressure, and three electric machine structure more complicated make the overall dimensions of control gear larger, controls complicated.
(2) spool be provided with work oil groove, the oil duct of working, return oil groove, return oil duct, work oil outlet, work return hydraulic fluid port, spool enters to return oily passage to be external work oil groove and to return oil groove, makes the axial dimension of spool very large; Work oil duct and to return oil duct be cylindrical hole, makes the radial dimension of spool very large.
(3) valve casing main aperture is through hole, and two ends all will seal, and sealability is poor.
(4) relief valve is arranged in another housing, adopts the valve casing of two splits to assemble, and has both had sealing problem, has increased again boundary dimension.
(5) pressure of each working oil path is the same, become synchronous change, does not have each oil circuit to have the function of different pressures.
Summary of the invention
The object of the invention is to, overcome problems of the prior art, a kind of numerical control hydraulic control unit is provided, simple in structure, boundary dimension is little, and controls conveniently.
For solving above technical problem, a kind of numerical control hydraulic control unit provided by the present invention, comprise valve body, main valve plug and the valve rod of coaxial line, described valve rod is installed in the mesopore of described main valve plug, described main valve plug is cylindrical body, and the cylndrical surface of main valve plug coordinates with the inner wall of main hole liquid sealing of described valve body; Many groups valve body oil outlet and valve body that described valve body is provided with the total filler opening being connected with pressure oil-source pressure oil and the total return opening being connected with pressure oil-source fuel tank, be connected respectively with multiple hydraulic pressure actuators return hydraulic fluid port; The cylndrical surface of described main valve plug is provided with the main valve plug oil outlet that multiple and described total filler opening is communicated with, the main valve plug that multiple and described total return opening is communicated with returns hydraulic fluid port, each described main valve plug oil outlet can dock with each described valve body oil outlet respectively, each described main valve plug returns hydraulic fluid port and can return hydraulic fluid port with each described valve body respectively and dock, and is provided with the valve rod oil duct being connected with described total filler opening in described valve rod; Each described main valve plug oil outlet is connected with the fuel feeding distributing chute in main valve plug respectively, and described fuel feeding distributing chute is connected with described valve rod oil duct; Each described main valve plug returns hydraulic fluid port and is connected with the oily distributing chute that returns in main valve plug respectively, described in return oily distributing chute and be connected with described valve body back oil road by the oil pocket of valve body main aperture, described valve body back oil road is communicated with described total return opening; Described valve body main aperture is the blind hole of an end opening, the opening end of described blind hole is provided with the first actuating motor of port closed, the output shaft of described the first actuating motor is connected with the power intake of the first magnetic clutch by key, and front end and its clutch end that described the first magnetic clutch is installed on described valve rod are connected with described main valve plug by deflector rod device; The rear end of described valve rod is provided with the second magnetic clutch, and described the second magnetic clutch and described the first magnetic clutch are one logical one disconnected each other, and the clutch end of described the second magnetic clutch is connected with drive lead screw; Described drive lead screw is sleeved on described valve rod, and the periphery of drive lead screw is supported on valve body main aperture wall by screw mandrel bearing; The front end of described drive lead screw is connected with transmission screw, and the periphery of described transmission screw is connected with described main valve plug by combination bearing and back-up ring.
With respect to prior art, the present invention has obtained following beneficial effect: after (1) first actuating motor starts, the first servomotor spindle actuate valve stem is rotated, the first magnetic clutch and the second magnetic clutch are one logical one disconnected each other, in the time of the second magnetic clutch dead electricity, the first magnetic clutch obtains electric, the clutch end of the first magnetic clutch drives main valve plug rotation by deflector rod device, make certain a pair of main valve plug oil outlet on main valve plug, main valve plug returns hydraulic fluid port and corresponding valve body oil outlet, valve body returns hydraulic fluid port docking, thereby making to return with this valve body oil outlet and valve body the operating cylinder that hydraulic fluid port is connected devotes oneself to work, in the time of the first magnetic clutch dead electricity, the second magnetic clutch obtains electric, the clutch end of the second magnetic clutch drives drive lead screw rotation, and then drive the transmission screw that is screwed in drive lead screw front end along drive lead screw axial displacement, driving wire master tape moves main valve plug axial displacement, also make on main valve plug certain a pair of main valve plug oil outlet, main valve plug return hydraulic fluid port and return hydraulic fluid port and dock with corresponding valve body oil outlet, valve body, devote oneself to work thereby make to return with this valve body oil outlet and valve body the operating cylinder that hydraulic fluid port is connected, such actuating motor both can drive main valve plug to rotate, and can drive again main valve plug to do axial motion, simplified the structure, and made control unit boundary dimension less, (2) total filler opening is connected with valve rod oil duct, and valve rod oil duct is connected with fuel feeding distributing chute, and fuel feeding distributing chute is connected with main valve plug oil outlet, has formed oil inlet passage built-in, has reduced the boundary dimension of control unit, (3) valve body main aperture is the blind hole of an end opening, has improved sealability.
As preferred version of the present invention, in described valve body, be provided with transformation chamber, the one end in described transformation chamber is larger diameter end, the other end is smaller diameter end, described transformation is provided with transformation piston in chamber, the two ends of described transformation piston coordinate with larger diameter end and the smaller diameter end liquid sealing in transformation chamber respectively, the smaller diameter end in described transformation chamber is connected with the transformation small end oil duct junction of described valve body inner wall of main hole by transformation chamber small end oil duct, and the larger diameter end in described transformation chamber is connected with the large end oil duct junction of transformation of described valve body inner wall of main hole by the large end oil duct in transformation chamber.The principle of similar hydraulic jack, the area difference of two end faces of transformation piston, in the time of small end fuel feeding from from transformation chamber small end oil duct to transformation piston, from transformation chamber, the oil pressure of large end oil duct output reduces, and realizes decompression; Otherwise, in the time that from transformation chamber, large end oil duct is to the large end fuel feeding of transformation piston, raise from the oil pressure of transformation chamber small end oil duct output, realize supercharging.
As present invention further optimization scheme, the large end oil duct junction of described transformation is communicated with certain the valve body oil outlet on described valve body.
As preferred version of the present invention, between the total filler opening on described valve body and total return opening, be connected by relief valve.In the time that charge oil pressure is too high, relief valve is opened, and total filler opening is communicated with total return opening, and now control unit is in unloading condition.
As present invention further optimization scheme, described relief valve is pilot operated compound relief valve, the relief valve spool of described pilot operated compound relief valve is between described total filler opening and total return opening, the pilot valve core of described pilot operated compound relief valve is adjusted cracking pressure by pilot valve spring and pressure regulation screw mandrel, and described pressure regulation leading screw is connected with the spindle of the second actuating motor by gear pair.The second actuating motor drives pressure regulation screw mandrel to rotate by gear pair, adjusts the pretightening force of pilot valve spring, thus the cracking pressure of regulation relief valve.
As preferred version of the present invention, described fuel feeding distributing chute and to return oily distributing chute be flat arc groove, the cambered surface of described flat arc groove is extended along circumferential surface centered by the axis of described main valve plug.Flat arc groove is compared with cylindrical hole, less at the radial dimension of main valve plug, is conducive to reduce the size of main valve plug.
As preferred version of the present invention, described deflector rod device comprises symmetrically arranged two driving levers and fixes the land of two driving levers, described land is fixedly connected with the clutch end of described the first magnetic clutch, and described in two, driving lever is plugged on respectively in the corresponding hole of described main valve plug.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation, and accompanying drawing only provides reference and explanation use, non-in order to limit the present invention.
Fig. 1 is the structural representation of numerical control hydraulic control unit of the present invention.
Fig. 2 is the sectional view along A-A in Fig. 1.
Fig. 3 is the sectional view along B-B in Fig. 1.
Fig. 4 is the sectional view along C-C in Fig. 1.
Fig. 5 is the sectional view along D-D in Fig. 1.
Fig. 6 is the sectional view along E-E in Fig. 1.
Fig. 7 is the phase diagram after the main valve plug axial displacement of Fig. 1.
Fig. 8 is the transformation piston of the numerical control hydraulic control unit structural drawing in the time of decompression state.
Fig. 9 is the transformation piston of the numerical control hydraulic control unit structural drawing in the time of pressurized state.
Figure 10 is the transformation piston of the numerical control hydraulic control unit structural drawing in the time of unloading condition.
In figure: 1 valve body; The total filler opening of 1a; 1b valve body oil outlet; 1c valve body returns hydraulic fluid port; 1d valve body back oil road; The total return opening of 1e; 2 main valve plugs; 2a fuel feeding distributing chute; 2b main valve plug oil outlet; 2c returns oily distributing chute; 2d main valve plug returns hydraulic fluid port; 3 valve rods; 3a valve rod oil duct; 4 first actuating motors; 4a the first servomotor spindle; 5 first magnetic clutchs; 6 lands; 7 driving levers; 8 second magnetic clutchs; 9 drive lead screws; 9a screw mandrel bearing; 9b screw mandrel shaft block; 10a radial ball bearing one; 10b radial ball bearing two; 10c thrust ball bearing one; 10d thrust ball bearing two; 11 transmission screws; 11a combination bearing; 11b back-up ring; 12 hydraulic pressure actuators; 13 second actuating motors; 13a the second servomotor spindle; 14a relief valve spool; 14b pilot valve core; 14c pilot valve spring; 14d pressure regulation screw mandrel; 15 gear pairs; 16 transformation pistons; 16a transformation chamber small end oil duct; The large end oil duct in 16b transformation chamber; 17 pressure oil-sources.
Embodiment
As shown in Figures 1 to 6, numerical control hydraulic control unit of the present invention, comprises valve body 1, main valve plug 2 and the valve rod 3 of coaxial line, and valve rod 3 is installed in the mesopore of main valve plug 2, main valve plug 2 is cylindrical body, and the cylndrical surface of main valve plug 2 coordinates with the inner wall of main hole liquid sealing of valve body 1.
Many groups valve body oil outlet 1b and valve body that valve body 1 is provided with the total filler opening 1a being connected with pressure oil-source 17 pressure oils and the total return opening 1e being connected with pressure oil-source fuel tank, be connected respectively with multiple hydraulic pressure actuators 12 return hydraulic fluid port 1c.Each valve body oil outlet 1b and corresponding valve body return hydraulic fluid port 1c and are positioned on same section and 180 ° of phase phase differences.Hydraulic pressure actuator can be oil hydraulic motor, hydraulic jack or deflection oil cylinder.
Valve rod 3 centers are provided with valve rod oil duct 3a, and the cylndrical surface of main valve plug 2 is provided with multiple main valve plug oil outlet 2b and multiple main valve plug returns hydraulic fluid port 2d, and each main valve plug oil outlet 2b and corresponding main valve plug return hydraulic fluid port 2d and be positioned on same section and 180 ° of phase phase differences.
Each main valve plug oil outlet 2b outwards can dock with each valve body oil outlet 1b respectively, is inwardly connected with the fuel feeding distributing chute 2a in main valve plug respectively, and fuel feeding distributing chute 2a is connected with valve rod oil duct 3a, and valve rod oil duct 3a is connected with the total filler opening 1a on valve body 1.
Each main valve plug returns hydraulic fluid port 2d and outwards can return hydraulic fluid port 1c with each valve body respectively and dock, inwardly be connected with the oily distributing chute 2c that returns in main valve plug respectively, return oily distributing chute 2c and be connected with valve body back oil road 1d by the oil pocket of valve body main aperture, valve body back oil road 1d is communicated with total return opening 1e.
Fuel feeding distributing chute 2a and to return oily distributing chute 2c be flat arc groove, the cambered surface of flat arc groove is extended along circumferential surface centered by the axis of main valve plug, makes the radial dimension of main valve plug less.
Valve body main aperture is the blind hole of an end opening, the opening end of blind hole is provided with the first actuating motor 4 of port closed, the first servomotor spindle 4a is connected with the power intake of the first magnetic clutch 5 by key, and front end and its clutch end that the first magnetic clutch 5 is installed on valve rod 3 are connected with main valve plug by deflector rod device.Deflector rod device comprises symmetrically arranged two driving levers 7 and fixes the land 6 of two driving levers, and land 6 is fixedly connected with the clutch end of the first magnetic clutch 5, and two driving levers 7 are plugged on respectively in the corresponding hole of main valve plug.
The second magnetic clutch 8 is arranged on the rear end of valve rod by key, the second magnetic clutch 8 and the first magnetic clutch 5 are one logical one disconnected each other, and the clutch end of the second magnetic clutch 8 is connected with drive lead screw 9; Drive lead screw 9 is sleeved on valve rod, and the periphery of drive lead screw 9 is provided with screw mandrel bearing 9a, and is supported on valve body main aperture wall by screw mandrel shaft block 9b; The front end of drive lead screw 9 is connected with transmission screw 11, and the periphery of transmission screw 11 is connected with main valve plug 2 by combination bearing 11a and back-up ring 11b.
Radial ball bearing one 10a is installed between valve rod and land 6, radial ball bearing two 10b are installed between valve rod and drive lead screw 9, between valve rod and valve body main aperture termination, thrust ball bearing one 10c is installed, thrust ball bearing two 10d are installed between valve rod rear end and valve body.
In valve body, be provided with transformation chamber, the one end in transformation chamber is larger diameter end, the other end is smaller diameter end, in transformation chamber, be provided with transformation piston 16, the two ends of transformation piston 16 coordinate with larger diameter end and the smaller diameter end liquid sealing in transformation chamber respectively, the smaller diameter end in transformation chamber is connected with the transformation small end oil duct junction of valve body inner wall of main hole by transformation chamber small end oil duct 16a, and the larger diameter end in transformation chamber is connected with the large end oil duct junction of transformation of valve body inner wall of main hole by transformation chamber large end oil duct 16b.The large end oil duct junction of transformation can be communicated with certain the valve body oil outlet 1b on valve body.
Between total filler opening 1a on valve body and total return opening 1e, be connected by relief valve, relief valve is pilot operated compound relief valve, the relief valve spool 14a of pilot operated compound relief valve is between total filler opening 1a and total return opening 1e, the pilot valve core 14b of pilot operated compound relief valve adjusts cracking pressure by pilot valve spring 14c and pressure regulation screw mandrel 14d, and pressure regulation leading screw is connected with the spindle of the second actuating motor 13 by gear pair 15.The second servomotor spindle 13a drives pressure regulation screw mandrel 14d to rotate by gear pair 15, adjusts the pretightening force of pilot valve spring 14c, thus the cracking pressure of regulation relief valve.
In work, after the first actuating motor starts, the first servomotor spindle 4a actuate valve stem is rotated, in the time of the second magnetic clutch 8 dead electricity, the first magnetic clutch 5 obtains electric, the clutch end of the first magnetic clutch 5 drives main valve plug rotation by deflector rod device, make on main valve plug certain a pair of main valve plug oil outlet 2b, main valve plug return hydraulic fluid port 2d and return hydraulic fluid port 1c and dock with corresponding valve body oil outlet 1b, valve body, devote oneself to work thereby make to return with this valve body oil outlet 1b and valve body the operating cylinder that hydraulic fluid port 1c is connected.
In the time of the first magnetic clutch 5 dead electricity, the second magnetic clutch 8 obtains electric, the clutch end of the second magnetic clutch 8 drives drive lead screw 9 to rotate, and then drive the transmission screw 11 that is screwed in drive lead screw 9 front ends along drive lead screw 9 axial displacements, transmission screw 11 drives main valve plug axial displacement, also make on main valve plug certain a pair of main valve plug oil outlet 2b, main valve plug return hydraulic fluid port 2d and return hydraulic fluid port 1c and dock with corresponding valve body oil outlet 1b, valve body, devote oneself to work thereby make to return with this valve body oil outlet 1b and valve body the operating cylinder that hydraulic fluid port 1c is connected.
As shown in Figure 1, main valve plug 2 is in the time of this position, and main valve plug oil outlet G, I are in running order, and main valve plug oil outlet F, H close, and it is in running order that while main valve plug returns hydraulic fluid port g, i, and main valve plug returns hydraulic fluid port f, h and closes.
As shown in Figure 7, main valve plug 2 is in the time of this position, and main valve plug oil outlet F, H are in running order, and main valve plug oil outlet G, I close, and it is in running order that while main valve plug returns hydraulic fluid port f, h, and main valve plug returns hydraulic fluid port g, i and closes.
As shown in Figure 8, the area difference of 16 two end faces of transformation piston, in the time of small end fuel feeding from from transformation chamber small end oil duct 16a to transformation piston 16, reduces from the oil pressure of transformation chamber large end oil duct 16b output, realizes decompression.
As shown in Figure 9, in the time of large end fuel feeding from from transformation chamber large end oil duct 16b to transformation piston 16, raise from the oil pressure of transformation chamber small end oil duct 16a output, realize supercharging.
As shown in figure 10, the second actuating motor 13 drives pressure regulation screw mandrel 14d rotation by gear pair 15, thereby changes the tension force of pilot valve spring 14c.In the time that charge oil pressure is too high, pilot valve core 14b overcomes the tension force of pilot valve spring 14c and opens, then relief valve spool 14a opens, total filler opening 1a is communicated with total return opening 1e, now control unit is in unloading condition, pressure oil enters from total filler opening 1a, directly flows back to pressure oil-source fuel tank through relief valve from total return opening 1e.
The foregoing is only the present invention's better possible embodiments, non-ly therefore limit to scope of patent protection of the present invention.In addition to the implementation, the present invention can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (3)
1. a numerical control hydraulic control unit, comprises valve body, main valve plug and the valve rod of coaxial line, and described valve rod is installed in the mesopore of described main valve plug, and described main valve plug is cylindrical body, and the cylndrical surface of main valve plug coordinates with the inner wall of main hole liquid sealing of described valve body; Many groups valve body oil outlet and valve body that described valve body is provided with the total filler opening being connected with pressure oil-source pressure oil and the total return opening being connected with pressure oil-source fuel tank, be connected respectively with multiple hydraulic pressure actuators return hydraulic fluid port; The cylndrical surface of described main valve plug is provided with the main valve plug oil outlet that multiple and described total filler opening is communicated with, the main valve plug that multiple and described total return opening is communicated with returns hydraulic fluid port, each described main valve plug oil outlet can dock with each described valve body oil outlet respectively, each described main valve plug returns hydraulic fluid port and can return hydraulic fluid port with each described valve body respectively and dock, and it is characterized in that: in described valve rod, be provided with the valve rod oil duct being connected with described total filler opening; Each described main valve plug oil outlet is connected with the fuel feeding distributing chute in main valve plug respectively, and described fuel feeding distributing chute is connected with described valve rod oil duct; Each described main valve plug returns hydraulic fluid port and is connected with the oily distributing chute that returns in main valve plug respectively, described in return oily distributing chute and be connected with described valve body back oil road by the oil pocket of valve body main aperture, described valve body back oil road is communicated with described total return opening; Described valve body main aperture is the blind hole of an end opening, the opening end of described blind hole is provided with the first actuating motor of port closed, the main shaft of described the first actuating motor is connected with the power intake of the first magnetic clutch by key, and front end and its clutch end that described the first magnetic clutch is installed on described valve rod are connected with described main valve plug by deflector rod device; The rear end of described valve rod is provided with the second magnetic clutch, and described the second magnetic clutch and described the first magnetic clutch are one logical one disconnected each other, and the clutch end of described the second magnetic clutch is connected with drive lead screw; Described drive lead screw is sleeved on described valve rod, and the periphery of drive lead screw is supported on valve body main aperture wall by screw mandrel bearing; The front end of described drive lead screw is connected with transmission screw, and the periphery of described transmission screw is connected with described main valve plug by combination bearing and back-up ring; In described valve body, be provided with transformation chamber, the one end in described transformation chamber is larger diameter end, the other end is smaller diameter end, described transformation is provided with transformation piston in chamber, the two ends of described transformation piston coordinate with larger diameter end and the smaller diameter end liquid sealing in transformation chamber respectively, the smaller diameter end in described transformation chamber is connected with the transformation small end oil duct junction of described valve body inner wall of main hole by transformation chamber small end oil duct, and the larger diameter end in described transformation chamber is connected with the large end oil duct junction of transformation of described valve body inner wall of main hole by the large end oil duct in transformation chamber; The large end oil duct junction of described transformation is communicated with certain the valve body oil outlet on described valve body; Described deflector rod device comprises symmetrically arranged two driving levers and fixes the land of two driving levers, and described land is fixedly connected with the clutch end of described the first magnetic clutch, and described in two, driving lever is plugged on respectively in the corresponding hole of described main valve plug.
2. numerical control hydraulic control unit according to claim 1, is characterized in that: between the total filler opening on described valve body and total return opening, be connected by relief valve.
3. numerical control hydraulic control unit according to claim 2, it is characterized in that: described relief valve is pilot operated compound relief valve, the relief valve spool of described pilot operated compound relief valve is between described total filler opening and total return opening, the pilot valve core of described pilot operated compound relief valve is adjusted cracking pressure by pilot valve spring and pressure regulation screw mandrel, and pressure regulation leading screw is connected with the spindle of the second actuating motor by gear pair.
4. numerical control hydraulic control unit according to claim 1, is characterized in that: described fuel feeding distributing chute and to return oily distributing chute be flat arc groove, the cambered surface of described flat arc groove is extended along circumferential surface centered by the axis of described main valve plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210042125.1A CN102588369B (en) | 2012-02-23 | 2012-02-23 | Numerical control hydraulic control unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210042125.1A CN102588369B (en) | 2012-02-23 | 2012-02-23 | Numerical control hydraulic control unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102588369A CN102588369A (en) | 2012-07-18 |
| CN102588369B true CN102588369B (en) | 2014-11-26 |
Family
ID=46477469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210042125.1A Expired - Fee Related CN102588369B (en) | 2012-02-23 | 2012-02-23 | Numerical control hydraulic control unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102588369B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838056B (en) * | 2012-09-10 | 2016-02-10 | 宁波力达物流设备有限公司 | The hydraulic pressure lowering means of electri forklift |
| DE102012222399A1 (en) * | 2012-12-06 | 2014-06-12 | Robert Bosch Gmbh | Constantly adjustable hydraulic cartridge valve |
| CN103062462B (en) * | 2012-12-27 | 2014-12-24 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Incremental digital plug-in mounting overflow valve |
| CN110332168B (en) * | 2019-08-05 | 2024-03-22 | 安徽理工大学 | Proportional flow control and high-speed switch dual-purpose valve based on two-degree-of-freedom motor |
| CN113983011B (en) * | 2021-12-31 | 2022-02-25 | 青州海盾液压机械有限公司 | Intelligent digital hydraulic system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86208732U (en) * | 1986-11-07 | 1988-02-10 | 中国科学院长春光学精密机械研究所 | Simple-structured digital servo valve |
| CN85102790B (en) * | 1985-04-01 | 1988-06-01 | 中国船舶工业总公司第七研究院第七零四研究所 | Digital pressure valve |
| CN2895835Y (en) * | 2006-04-21 | 2007-05-02 | 孙勇 | Four-edge control valve suitable to digital oil tank or digital oil-motor |
| CN2900886Y (en) * | 2006-02-20 | 2007-05-16 | 陈克昌 | Digital ratio servo valve |
| CN201891510U (en) * | 2010-09-10 | 2011-07-06 | 胜利油田胜利动力机械集团有限公司 | Automatic electric butterfly valve |
| CN201972981U (en) * | 2010-12-20 | 2011-09-14 | 扬州瘦西湖仪表有限公司 | Digital hydraulic control device capable of selectively controlling a plurality of work oil cylinders |
| CN202451489U (en) * | 2012-02-23 | 2012-09-26 | 江正庆 | Numerically controlled hydraulic control device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO79533A2 (en) * | 1981-09-21 | 1983-09-26 | Intreprinderea "Saro",Ro | HYDRAULIC CONTROL BLOCK |
-
2012
- 2012-02-23 CN CN201210042125.1A patent/CN102588369B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102790B (en) * | 1985-04-01 | 1988-06-01 | 中国船舶工业总公司第七研究院第七零四研究所 | Digital pressure valve |
| CN86208732U (en) * | 1986-11-07 | 1988-02-10 | 中国科学院长春光学精密机械研究所 | Simple-structured digital servo valve |
| CN2900886Y (en) * | 2006-02-20 | 2007-05-16 | 陈克昌 | Digital ratio servo valve |
| CN2895835Y (en) * | 2006-04-21 | 2007-05-02 | 孙勇 | Four-edge control valve suitable to digital oil tank or digital oil-motor |
| CN201891510U (en) * | 2010-09-10 | 2011-07-06 | 胜利油田胜利动力机械集团有限公司 | Automatic electric butterfly valve |
| CN201972981U (en) * | 2010-12-20 | 2011-09-14 | 扬州瘦西湖仪表有限公司 | Digital hydraulic control device capable of selectively controlling a plurality of work oil cylinders |
| CN202451489U (en) * | 2012-02-23 | 2012-09-26 | 江正庆 | Numerically controlled hydraulic control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102588369A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102588369B (en) | Numerical control hydraulic control unit | |
| CN107387810A (en) | The machine feedback formula Numeric hydraulic cylinder that a kind of valve pocket can be servo-actuated | |
| CN103727094B (en) | A kind of electro-hydraulic servo numerical control push rod device | |
| CN103075385A (en) | Electric servo oil cylinder | |
| CN110594475A (en) | Motor-driven digital valve | |
| CN105523174B (en) | A kind of door cylinder separation type hydraulic servo actuator | |
| CN111503081A (en) | Electric proportional control hydraulic multi-way reversing valve and control method thereof | |
| CN203784007U (en) | Single piston rod symmetric digital servo hydraulic cylinder | |
| CN202707658U (en) | Directly operated type high-flow direction flow servo valve and control system using same | |
| CN111486149A (en) | Servo power-assisted hydraulic cylinder | |
| CN202451489U (en) | Numerically controlled hydraulic control device | |
| US9261116B2 (en) | Hydraulic valve with helical actuator | |
| CN204344558U (en) | A kind of secondary electro-hydraulic servo control valve unit by finite angle motor direct-drive | |
| CN103775441A (en) | Electrical feedback large-scale servo hydraulic cylinder driven by double motors | |
| CN103201547A (en) | A new mechanism for fluid power transmission and control | |
| CN202418077U (en) | Motor-driven servo valve | |
| CN102022391A (en) | Digital hydraulic control system selectively controlling multiple operating cylinders | |
| CN110332171B (en) | Double-speed valve and double-speed hydraulic system | |
| CN203656263U (en) | Electro-hydraulic servo valve provided with movable gear rack | |
| CN101839267A (en) | Integral speed regulating and pressure regulating servo oil cylinder with pump | |
| CN212155303U (en) | Electric proportional control hydraulic multi-way reversing valve | |
| CN101403366B (en) | Plunger hydraulic motor mechanical-hydraulic leading switch variable-torque oil-distribution component and torque-changing method | |
| CN207297964U (en) | The machine feedback formula Numeric hydraulic cylinder that a kind of valve pocket can be servo-actuated | |
| CN108716489B (en) | Power stage structure of electro-hydraulic pressure servo valve | |
| CN201972981U (en) | Digital hydraulic control device capable of selectively controlling a plurality of work oil cylinders |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20160223 |