CN103133449B - Multi-spool hydraulic valve - Google Patents
Multi-spool hydraulic valve Download PDFInfo
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- CN103133449B CN103133449B CN201310073322.4A CN201310073322A CN103133449B CN 103133449 B CN103133449 B CN 103133449B CN 201310073322 A CN201310073322 A CN 201310073322A CN 103133449 B CN103133449 B CN 103133449B
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Abstract
The invention relates to a multi-spool hydraulic valve and belongs to the field of hydraulic components. The multi-spool hydraulic valve comprises a valve block with a valve hole. A first spool is disposed in the valve hole of the valve block and is provided with another valve hole. A second spool is disposed in the valve hole of the first spool. The valve block, the first spool and the second spool are allowed for pairwise mutual movement. The valve block is provided with an oil access set. The first spool is provided with an oil access set matching with the oil access set on the valve block. The spools in the multi-spool hydraulic valve coordinate to move, the spools and the valve block coordinate to move, and accordingly different mechanical energy levels are generated by the hydraulic valve, different loops are made or broken and multi-loop control is achieved.
Description
Technical field
The invention belongs to hydraulic element field, relate to a kind of hydrovalve, especially a kind of hydrovalve with a plurality of spools.Background technique
Existing hydrovalve, its spool is single core valve arrangement substantially, although can meet the application of a lot of occasions, but function is relatively single, can only control a loop, if want to control many loops, will use a plurality of hydrovalves to control, this has increased controlling cost of oil hydraulic circuit to a certain extent, and this application development that also makes common hydrovalve control occasion at multiloop is subject to certain restrictions.
Existing hydrovalve also has the design of many spools, as name is called " multi-function hydraulic valve ", the patent No. is that 92212479.5 Chinese utility model patent discloses the hydrovalve that nonreturn valve core is set in a kind of main valve plug, but this nonreturn valve core is cone structure, itself and main valve plug only have to be opened or closed a kind of open/close states, can not realize multiloop and control.
Name is called " hydrovalve, hydraulic valve bank and hydrovalve controlling method ", and the patent No. is: 201110216709.1 Chinese invention patent discloses a kind of hydrovalve with two spools, comprises the first spool and the second spool.But two spools are to coordinate face length, precision to be difficult to ensure that card has just adopted valve body the mode of split-type design with valve body in order to solve the spool of hydrovalve, and two spools are placed on the left and right sides of body cavity in the mode of series connection.This design still belongs to single spool design in essence, can not control many loops.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of multicore hydrovalve that can control many loops.
A kind of multicore hydrovalve, comprise the valve body (1) that is provided with valve opening, in the valve opening of valve body (1), be provided with the first spool (2), the first spool is provided with valve opening in (2), in the valve opening of the first spool (2), be provided with the second spool (3), described valve body (1), the first spool (2) and the second spool (3) can move between any two mutually, valve body arranges oil inlet and outlet group on (1), the oil inlet and outlet group that oil inlet and outlet group on the upper setting of the first spool (2) and valve body (1) matches, the groove that the second spool (3) periphery setting can connect the oil inlet and outlet on valve body (1) and the first spool (2).
Oil inlet and outlet group on valve body (1) can need to design different schemes according to controlling, a kind of feasible scheme is, oil inlet and outlet group on valve body (1) comprises hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, wherein, hydraulic fluid port P is arranged on the neutral position of valve body (1) one side, hydraulic fluid port A1 and hydraulic fluid port B1, hydraulic fluid port A2 and hydraulic fluid port B2, hydraulic fluid port AT1 and hydraulic fluid port BT1 hydraulic fluid port AT2 and hydraulic fluid port BT2 are symmetrical set centered by hydraulic fluid port P at the homonymy of hydraulic fluid port P, opposite one side of the upper hydraulic fluid port P of valve body (1) arranges hydraulic fluid port A4 between hydraulic fluid port A2 and hydraulic fluid port AT1 corresponding position, is arranged side by side hydraulic fluid port A3 and AT4, at hydraulic fluid port AT2 corresponding position arranged outside hydraulic fluid port AT3 between hydraulic fluid port A2 and hydraulic fluid port AT2 corresponding position, opposite one side of the upper hydraulic fluid port P of valve body (1), centered by hydraulic fluid port P, arranges hydraulic fluid port B3, hydraulic fluid port B4, hydraulic fluid port BT3 and hydraulic fluid port BT4 in symmetrical mode respectively with above-mentioned hydraulic fluid port A4, hydraulic fluid port A3, hydraulic fluid port AT4 and hydraulic fluid port AT3.
Preferably, on the valve opening inwall of valve body (1), at above-mentioned hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, place, the exit position on valve opening circumferentially arranges than the slightly wide groove of above-mentioned hydraulic fluid port width.
The oil inlet and outlet group that oil inlet and outlet group on the upper setting of the first spool (2) and valve body (1) matches, a kind of feasible scheme is, at the first spool (2) during in meta, the hydraulic fluid port group on the first spool (2) comprise with described valve body (1) on the hydraulic fluid port (24) that connects of hydraulic fluid port AT2, the hydraulic fluid port (23) connecting with hydraulic fluid port A2 on described valve body (1), the hydraulic fluid port (22) connecting with hydraulic fluid port P on described valve body (1), the hydraulic fluid port (21) connecting with hydraulic fluid port B2 on described valve body (1) and the hydraulic fluid port (20) connecting with hydraulic fluid port BT2 on described valve body (1).
According to controlling needs, the groove that the first spool (2) periphery setting can connect the oil inlet and outlet on valve body (1).
Preferably, the described groove that the oil inlet and outlet on valve body (1) can be connected in the first spool (2) periphery setting has two, described two grooves (27,28) are arranged on hydraulic fluid port (22) both sides in described the first spool (2) neutral position in symmetrical mode, the width of groove (27,28) is greater than the width of hydraulic fluid port A1, be less than the minimum edge distance between hydraulic fluid port AT1 and hydraulic fluid port P, this groove (27,28) is used for realizing the perforation of the upper hydraulic fluid port of valve body (1).
According to controlling needs, the groove that the second spool (3) periphery setting can connect the oil inlet and outlet on valve body (1) and the first spool (2).
Preferably, at the second spool (3) during in meta, the groove that oil inlet and outlet on valve body (1) and the first spool (2) can be connected of described the second spool (3) periphery setting has two, centered by the hydraulic fluid port P of described two grooves (25,26) on valve body (1), in symmetrical mode, arrange, the width of groove (25,26) is greater than the maximum back gauge between hydraulic fluid port A2 and hydraulic fluid port A1, is less than the minimum edge distance between hydraulic fluid port AT2 and hydraulic fluid port P.
As required, in the second spool (3), the 3rd spool can also be set, the upper oil inlet and outlet group matching with the first spool that arranges of the second spool (3).
According to controlling needs, the 3rd spool periphery setting make valve body (1), the first spool (2) and, the groove that can connect of the oil inlet and outlet group on the second spool (3).
Multicore hydrovalve provided by the invention, is the relation comprising layer by layer between a plurality of spools, and each layer of spool is separate, can relatively move each other, and each layer of spool all can separately or be combined with respect to valve body and move.According to controlling needs, valve body arranges oil inlet and outlet group, the hydraulic fluid port assembly on each layer of spool setting and valve body close and spool between the hydraulic fluid port and the groove that cooperatively interact.Compared with prior art, multicore hydrovalve provided by the invention is by between spool and spool, and moves coordinating between spool and valve body, makes hydrovalve produce different function Wei， UNICOMs or end different loops, realizes the control in many loops.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1 first function position;
Fig. 2 is the structural representation of 1 second function position of the embodiment of the present invention;
Fig. 3 is the structural representation of the 3rd function position of the embodiment of the present invention 1;
Fig. 4 is the structural representation of the 4th function position of the embodiment of the present invention 1;
Fig. 5 is the structural representation of the 5th function position of the embodiment of the present invention 1;
Fig. 6 is the structural representation of the 6th function position of the embodiment of the present invention 1;
Fig. 7 is the structural representation of the 7th function position of the embodiment of the present invention 1;
Fig. 8 is the structural representation of the 8th function position of the embodiment of the present invention 1;
Fig. 9 is the structural representation of the 9th function position of the embodiment of the present invention 1.
Embodiment
Embodiment 1:
A kind of multicore hydrovalve, as shown in Figure 1, comprise the valve body 1 that is provided with valve opening, in the valve opening of valve body 1, be provided with the first spool 2, in the first spool 2, be provided with valve opening, in the valve opening of the first spool 2, be provided with the second spool 3, described valve body 1, the first spool 2 and the second spool 3 can move between any two mutually, oil inlet and outlet group is set on valve body 1, the oil inlet and outlet group that oil inlet and outlet group on the first spool 2 on setting and valve body 1 matches, the groove that the second spool 3 periphery settings can connect the oil inlet and outlet on valve body 1 and the first spool 2.
Oil inlet and outlet group on valve body 1 can need to design different schemes according to controlling, a kind of feasible scheme is, as shown in Figure 1, oil inlet and outlet group on valve body 1 comprises hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, wherein, hydraulic fluid port P is arranged on the neutral position of valve body 1 one sides, hydraulic fluid port A1 and hydraulic fluid port B1, hydraulic fluid port A2 and hydraulic fluid port B2, hydraulic fluid port AT1 and hydraulic fluid port BT1 hydraulic fluid port AT2 and hydraulic fluid port BT2 are symmetrical set centered by hydraulic fluid port P at the homonymy of hydraulic fluid port P, opposite one side of hydraulic fluid port P on valve body 1 arranges hydraulic fluid port A4 between hydraulic fluid port A2 and hydraulic fluid port AT1 corresponding position, between hydraulic fluid port A2 and hydraulic fluid port AT2 corresponding position, is arranged side by side hydraulic fluid port A3 and AT4, at hydraulic fluid port AT2 corresponding position arranged outside hydraulic fluid port AT3, opposite one side of hydraulic fluid port P on valve body 1, centered by hydraulic fluid port P, arranges hydraulic fluid port B3, hydraulic fluid port B4, hydraulic fluid port BT3 and hydraulic fluid port BT4 in symmetrical mode respectively with above-mentioned hydraulic fluid port A4, hydraulic fluid port A3, hydraulic fluid port AT4 and hydraulic fluid port AT3.
As shown in Figure 1, on the valve opening inwall of valve body 1, at above-mentioned hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, place, the exit position on valve opening circumferentially arranges than the slightly wide groove of above-mentioned hydraulic fluid port width, for example, on the valve opening inwall of valve body 1, in the valve opening inwall outlet port of hydraulic fluid port BT4, the groove 11 slightly wider than above-mentioned valve opening width is circumferentially set.The effect of valve opening inwall upper groove is: increase through-current capacity, be convenient to processing.
As shown in Figure 1, the oil inlet and outlet group that oil inlet and outlet group on the first spool 2 on setting and valve body 1 matches, a kind of feasible scheme is, at the first spool 2 during in meta, the hydraulic fluid port group on the first spool 2 comprise with described valve body 1 on the hydraulic fluid port 24 that connects of hydraulic fluid port AT2, the hydraulic fluid port 23 connecting with hydraulic fluid port A2 on described valve body 1, the hydraulic fluid port 22 connecting with hydraulic fluid port P on described valve body 1, the hydraulic fluid port 21 connecting with hydraulic fluid port B2 on described valve body 1 and the hydraulic fluid port 20 connecting with hydraulic fluid port BT2 on described valve body 1.
As shown in Figure 1, according to controlling needs, the first spool 2 hydraulic fluid port 22 both sides are symmetrical set two grooves: groove 27 and groove 28, the width of groove 27,28 is greater than the width of hydraulic fluid port A1, be less than the minimum edge distance between hydraulic fluid port AT1 and hydraulic fluid port P, this groove 27,28 is used for realizing the perforation of hydraulic fluid port on valve body 1.
As shown in Figure 1, at the second spool 3 during in meta, centered by hydraulic fluid port P on the second spool 3 on valve body 1, in symmetrical mode, two grooves 25,26 are set, the width of groove 25,26 is greater than the maximum back gauge between hydraulic fluid port A2 and hydraulic fluid port A1, is less than the minimum edge distance between hydraulic fluid port AT2 and hydraulic fluid port P.
Embodiment 2:
Identical with embodiment 1, the design proposal of the oil inlet and outlet group on valve body 1, the first spool 2, the second spools 3 and groove is different as different from Example 1.
Embodiment 3:
Identical, different with embodiment 1, embodiment 2, interior the 3rd spool that arranges of the second spool 3, arranges the oil inlet and outlet group matching with the first spool on the second spool 3.According to controlling needs, the 3rd spool periphery setting make valve body 1, the first spool 2 and, the groove that can connect of the oil inlet and outlet group on the second spool 3.
Each function position of introducing above-described embodiment 1 below in conjunction with accompanying drawing 1-9, each function is in Table 1:
| ? | |
|
A1 | B1 | A2 | B2 | A3 | B3 | A4 | B4 |
| |
Meta | Meta | Close | Close | Close | Close | Close | Close | Close | |
| Function | ||||||||||
| 2 | Meta | Left position | Close | Close | Return | Go out | Close | Close | Close | |
| Function | ||||||||||
| 3 | Meta | Right position | Close | Close | Go out | Return | Close | Close | Close | Close |
| Function 4 | Left position | Meta | Return | Go out | Close | Close | Close | Close | Close | Close |
| Function 5 | Left position | Left position | Return | Go out | Close | Close | Return | Go out | Close | Close |
| Function 6 | Left position | Right position | Return | Go out | Close | Close | Go out | Return | Close | Close |
| Function 7 | Right position | Meta | Go out | Return | Close | Close | Close | Close | Close | Close |
| Function 8 | Right position | Right position | Go out | Return | Close | Close | Close | Close | Go out | Return |
| Function 9 | Right position | Left position | Go out | Return | Close | Close | Close | Close | Return | Go out |
As shown in Figure 1, when the first spool 2, the second spool 3 are during all in meta, oil inlet P is in cut-off state.
As shown in Figure 2, when the first spool 2 is in meta, the second spool 3 is in left when position, oil inlet P and hydraulic fluid port B2Kou UNICOM, and hydraulic fluid port B2 is fuel-displaced, hydraulic fluid port A2 and hydraulic fluid port AT2 UNICOM, hydraulic fluid port A2 oil return.
As shown in Figure 3, when the first spool 2 is in meta, the second spool 3 is in right when position, oil inlet P and hydraulic fluid port A2 UNICOM, and hydraulic fluid port A2 is fuel-displaced, hydraulic fluid port B2 and hydraulic fluid port BT2 UNICOM, hydraulic fluid port B2 oil return.
As shown in Figure 4, when the first spool 2 is in left position, when the second spool 3 is meta, oil inlet P and hydraulic fluid port B1 UNICOM, hydraulic fluid port B1 is fuel-displaced, hydraulic fluid port A1 and hydraulic fluid port AT1 UNICOM, hydraulic fluid port A1 oil return.
As shown in Figure 5, when the first spool 2, the second spool 3 are all in left when position, oil inlet P and hydraulic fluid port B1 UNICOM, hydraulic fluid port B1 is fuel-displaced, hydraulic fluid port A1 oil return; Meanwhile, oil inlet P and hydraulic fluid port B3 UNICOM, hydraulic fluid port B3 is fuel-displaced, hydraulic fluid port A3 and hydraulic fluid port AT3 UNICOM, hydraulic fluid port A3 oil return.
As shown in Figure 6, when the first spool 2 is in left position, the second spool 3 when right position, oil inlet P and hydraulic fluid port B1 UNICOM, hydraulic fluid port B1 is fuel-displaced, hydraulic fluid port A1 oil return; Meanwhile, oil inlet P and hydraulic fluid port A3 UNICOM, hydraulic fluid port A3 is fuel-displaced, hydraulic fluid port B3 and hydraulic fluid port BT3 UNICOM, the oil return of hydraulic fluid port B3 mouth.
As shown in Figure 7, when the first spool 2 is in right position, when the second spool 3 is meta, oil inlet P and hydraulic fluid port A1 UNICOM, hydraulic fluid port A1 is fuel-displaced, hydraulic fluid port B1 and hydraulic fluid port BT1Kou UNICOM, hydraulic fluid port BB1 oil return.
As shown in Figure 8, when the first spool 2, interior the second spool 3 are all in right when position, oil inlet P and hydraulic fluid port A1 UNICOM, hydraulic fluid port A1 is fuel-displaced, hydraulic fluid port B1 oil return; Meanwhile, oil inlet P and hydraulic fluid port A4 UNICOM, hydraulic fluid port A4 is fuel-displaced, hydraulic fluid port B4 and hydraulic fluid port BT4 UNICOM, hydraulic fluid port BB4 oil return.
As shown in Figure 9, when the first spool 2 is in right position, the second spool 3 when left position, oil inlet P and hydraulic fluid port A1 UNICOM, hydraulic fluid port B1 and hydraulic fluid port BT1 UNICOM, hydraulic fluid port A1 is fuel-displaced, hydraulic fluid port B1 oil return; Meanwhile, oil inlet P and hydraulic fluid port B4 UNICOM, hydraulic fluid port B4 is fuel-displaced, hydraulic fluid port A4 and hydraulic fluid port AT4Kou UNICOM, hydraulic fluid port A4 oil return.
Beneficial effect of the present invention:
1, the structure of this kind of multicore valve can make it by the moving left and right of multilayer spool, and the various combination of generation obtains more function position, thereby controls more state, and then reaches and utilize a hydrovalve just can control the object in many loops.
2, this kind of multicore valve can just can be controlled more oil hydraulic circuit with less spool, improved the compactedness of hydrovalve.
3, this kind of a kind of function of multicore valve realizes and sometimes need to take another kind of function as basis, and this just makes valve structurally just exist certain logical relation, is particularly suitable for sequence control.
Along with the development of hydraulics, the control ability that improves hydrovalve will be a large development trend.A kind of multicore hydrovalve provided by the invention will be the good approach addressing this problem, and can, when guaranteeing compact structure, can control more oil hydraulic circuit.
Claims (1)
1. a multicore hydrovalve, comprise the valve body (1) that is provided with valve opening, in the valve opening of valve body (1), be provided with the first spool (2), the first spool is provided with valve opening in (2), it is characterized in that, in the valve opening of the first spool (2), be provided with the second spool (3), described valve body (1), the first spool (2) and the second spool (3) can move between any two mutually, valve body arranges oil inlet and outlet group on (1), the oil inlet and outlet group that oil inlet and outlet group on the upper setting of the first spool (2) and valve body (1) matches, the groove that the second spool (3) periphery setting can connect the oil inlet and outlet on valve body (1) and the first spool (2), oil inlet and outlet group on described valve body (1) comprises hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, wherein, hydraulic fluid port P is arranged on the neutral position of valve body (1) one side, and hydraulic fluid port A1 and hydraulic fluid port B1, hydraulic fluid port A2 and hydraulic fluid port B2, hydraulic fluid port AT1 and hydraulic fluid port BT1, hydraulic fluid port AT2 and hydraulic fluid port BT2 are symmetrical set centered by hydraulic fluid port P at the homonymy of hydraulic fluid port P, opposite one side of the upper hydraulic fluid port P of valve body (1) arranges hydraulic fluid port A4 between hydraulic fluid port A2 and hydraulic fluid port AT1 corresponding position, is arranged side by side hydraulic fluid port A3 and hydraulic fluid port AT4, at hydraulic fluid port AT2 corresponding position arranged outside hydraulic fluid port AT3 between hydraulic fluid port A2 and hydraulic fluid port AT2 corresponding position, opposite one side of the upper hydraulic fluid port P of valve body (1), centered by hydraulic fluid port P, arranges hydraulic fluid port B3, hydraulic fluid port B4, hydraulic fluid port BT3 and hydraulic fluid port BT4 in symmetrical mode respectively with above-mentioned hydraulic fluid port A4, hydraulic fluid port A3, hydraulic fluid port AT4 and hydraulic fluid port AT3.
2
.multicore hydrovalve according to claim 1, it is characterized in that, on the valve opening inwall of valve body (1), at described hydraulic fluid port P, hydraulic fluid port A1, hydraulic fluid port B1, hydraulic fluid port A2, hydraulic fluid port B2, hydraulic fluid port A3, hydraulic fluid port B3, hydraulic fluid port A4, hydraulic fluid port B4, hydraulic fluid port AT1, hydraulic fluid port AT2, hydraulic fluid port AT3, hydraulic fluid port AT4, hydraulic fluid port BT1, hydraulic fluid port BT2, hydraulic fluid port BT3 and hydraulic fluid port BT4, place, the exit position on valve opening circumferentially arranges than the slightly wide groove of above-mentioned hydraulic fluid port width.
3
.according to the multicore hydrovalve described in claim 1 or 2, it is characterized in that, the oil inlet and outlet group that oil inlet and outlet group on the upper setting of the first spool (2) and valve body (1) matches, at the first spool (2) during in meta, hydraulic fluid port group on the first spool (2) comprise with described valve body (1) on the hydraulic fluid port (24) that connects of hydraulic fluid port AT2, the hydraulic fluid port (23) connecting with hydraulic fluid port A2 on described valve body (1), the hydraulic fluid port (22) connecting with hydraulic fluid port P on described valve body (1), the hydraulic fluid port (21) connecting with hydraulic fluid port B2 on described valve body (1) and the hydraulic fluid port (20) connecting with hydraulic fluid port BT2 on described valve body (1).
4
.multicore hydrovalve according to claim 3, is characterized in that, the groove that the first spool (2) periphery setting can connect the oil inlet and outlet on valve body (1).
5
.multicore hydrovalve according to claim 4, it is characterized in that, the groove that oil inlet and outlet on valve body (1) can be connected of described the first spool (2) periphery setting has two, described two grooves (27,28) are arranged on hydraulic fluid port (22) both sides in described the first spool (2) neutral position in symmetrical mode, the width of described two grooves (27,28) is greater than the width of hydraulic fluid port A1, be less than the minimum edge distance between hydraulic fluid port AT1 and hydraulic fluid port P, described two grooves (27,28) are used for realizing the perforation of the upper hydraulic fluid port of valve body (1).
6
.multicore hydrovalve according to claim 5, it is characterized in that, at the second spool (3) during in meta, the groove that oil inlet and outlet on valve body (1) and the first spool (2) can be connected of described the second spool (3) periphery setting has two, the width of described two grooves (25,26) is greater than the maximum back gauge between hydraulic fluid port A2 and hydraulic fluid port A1, is less than the minimum edge distance between hydraulic fluid port AT2 and hydraulic fluid port P.
7
.multicore hydrovalve according to claim 1, it is characterized in that, the 3rd spool is set in the second spool (3), the upper oil inlet and outlet group matching with the first spool, the groove that the 3rd spool periphery setting can connect the oil inlet and outlet group on valve body (1), the first spool (2) and the second spool (3) of arranging of the second spool (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073322.4A CN103133449B (en) | 2013-03-07 | 2013-03-07 | Multi-spool hydraulic valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310073322.4A CN103133449B (en) | 2013-03-07 | 2013-03-07 | Multi-spool hydraulic valve |
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| Publication Number | Publication Date |
|---|---|
| CN103133449A CN103133449A (en) | 2013-06-05 |
| CN103133449B true CN103133449B (en) | 2014-02-12 |
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|---|---|---|---|
| CN201310073322.4A Active CN103133449B (en) | 2013-03-07 | 2013-03-07 | Multi-spool hydraulic valve |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643052Y (en) * | 2003-04-10 | 2004-09-22 | 中海油田服务股份有限公司 | Two-passage normal open and normal close cartridge valve |
| CN101560998A (en) * | 2009-05-07 | 2009-10-21 | 刘常芝 | Self-control positioning bidirectional hydraulic change-over valve |
| US20110032677A1 (en) * | 2009-08-07 | 2011-02-10 | Advanced Processor Architectures, Llc | Distributed computing |
| CN102269192A (en) * | 2010-06-04 | 2011-12-07 | 梅西耶-布加蒂公司 | Hydraulic valve |
-
2013
- 2013-03-07 CN CN201310073322.4A patent/CN103133449B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2643052Y (en) * | 2003-04-10 | 2004-09-22 | 中海油田服务股份有限公司 | Two-passage normal open and normal close cartridge valve |
| CN101560998A (en) * | 2009-05-07 | 2009-10-21 | 刘常芝 | Self-control positioning bidirectional hydraulic change-over valve |
| US20110032677A1 (en) * | 2009-08-07 | 2011-02-10 | Advanced Processor Architectures, Llc | Distributed computing |
| CN102269192A (en) * | 2010-06-04 | 2011-12-07 | 梅西耶-布加蒂公司 | Hydraulic valve |
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| CN103133449A (en) | 2013-06-05 |
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