CN102889257B - Slide valve type hydraulic valve with differential motion function - Google Patents
Slide valve type hydraulic valve with differential motion function Download PDFInfo
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- CN102889257B CN102889257B CN201210351481.1A CN201210351481A CN102889257B CN 102889257 B CN102889257 B CN 102889257B CN 201210351481 A CN201210351481 A CN 201210351481A CN 102889257 B CN102889257 B CN 102889257B
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Abstract
The invention provides a slide value type hydraulic valve with a differential motion function. The slide value type hydraulic valve comprises a valve body and a valve element which is arranged in a valve body hole; a first undercutting groove, a second undercutting groove, an oil inlet undercutting groove, a third undercutting groove and a fourth undercutting groove are arranged in the valve body hole in sequence, wherein the first undercutting groove and the fourth undercutting groove are communicated with an oil return opening, the second undercutting groove and the third undercutting groove are communicated with a working oil port respectively, and an oil inlet undercutting groove is communicated with an oil inlet; the valve element comprises a left circular bead, a left shaft neck, a middle circular bead, a right shaft neck and a right circular bead from left to right; a circular groove, a first valve port and a second valve port are arranged on the excircle of the left part of the middle circular bead, wherein the first valve port and the second valve port are not communicated with each other; a third valve port and a fourth valve port which are communicated with the right shaft neck are arranged on the excircle of the right part of the middle circular bead and the excircle of the left part of the right circular bead respectively. The slide value type hydraulic valve realizes differential motion function through improving the structure of a main valve element of the hydraulic valve, the integral structure is changed little, so as to reduce the product cost and failure rate of the product; the differential motion function is realized, and stepless control of flow can be realized at the same time.
Description
Technical field
The present invention relates to hydraulic drive and control technical field, particularly a kind of slide valve type hydraulic valve with differential function.
Background technique
At present, the method realizing the differential function of oil cylinder mainly contains following several mode: carry differential function in oil cylinder, control valve inside carries differential function, original control valve basis increases Stacked differential valve, hydraulic system connected by pipeline and realizes differential function in conjunction with electrical control.
Above-mentioned several mode realizing differential function respectively has its shortcoming, for the existing control valve carrying differential function, mainly there is following shortcoming:
1, for realizing differential function, the element such as logical valve, control valve need be increased in control valve;
2, for realizing differential function, each oil circuit control of the corresponding increase of control valve domestic demand and install lumen pore, valve body structure relative complex, correspondingly adds product cost and hazard rate;
3, this control valve can only realize oil circuit break-make, can not realize the stepless control of flow.
Summary of the invention
In view of this, the present invention is intended to propose a kind of slide valve type hydraulic valve with differential function, and realize differential function by improving hydrovalve main valve plug structure, overall structure is changed few, low product cost and hazard rate.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of slide valve type hydraulic valve with differential function, comprise valve body and be arranged on the spool in valve body hole, the first undercut groove, the second undercut groove, oil-feed undercut groove, the 3rd undercut groove, the 4th undercut groove is sequentially provided with in described valve body hole, described first undercut groove is communicated with return opening with the 4th undercut groove, described second undercut groove is communicated with actuator port respectively with the 3rd undercut groove, and described oil-feed undercut groove is communicated with filler opening;
Described spool comprises left shoulder, left axle journal, middle shoulder, right axle journal and right shoulder from left to right, the cylindrical of described middle shoulder left part is provided with circular groove, mutually disconnected first valve port and the second valve port, described first valve port is communicated with described left axle journal, described second valve port is communicated with described circular groove, and the cylindrical of described middle shoulder right part is respectively equipped with on the cylindrical of described right shoulder left part the 3rd valve port and the 4th valve port that are communicated with described right axle journal;
When spool is in meta, described left shoulder, middle shoulder, right shoulder close described first undercut groove, oil-feed undercut groove, the 4th undercut groove respectively, described left axle journal, the first valve port are communicated with the second undercut groove, described second valve port, circular groove are communicated with oil-feed undercut groove, and described 3rd valve port, the 4th valve port and right axle journal are communicated with described 3rd undercut groove.
Further, described first valve port and/or the 3rd valve port and/or the 4th valve port are step trough structure.
Further, described second valve port is bar-shaped trough structure, step trough structure or triangle channel-shaped structure.
Further, described oil-feed undercut groove comprises the 5th undercut groove near the second undercut groove and the 6th undercut groove near the 3rd undercut groove.
Further, the quantity of described first valve port and/or the 3rd valve port and/or the 4th valve port is two and is evenly distributed on the cylindrical of described spool.
Further, described second valve port is provided with two, and and described first valve port interval arrange.
Further, described filler opening is also provided with flow regulator.
Relative to prior art, the present invention has following advantage:
The slide valve type hydraulic valve of the differential function of the band 1, described in the present embodiment does not need additionally to increase the element such as logical valve, control valve just can realize differential function;
The slide valve type hydraulic valve of the differential function of the band 2, described in the present embodiment need not increase each oil circuit control in valve and installation lumen pore just can realize differential function, correspondingly reduces product cost and hazard rate;
The slide valve type hydraulic valve of the differential function of the band 3, described in the present embodiment realizes differential function by improving valve core structure, and overall structure is changed few, easily realizes;
First valve port of the slide valve type hydraulic valve of the differential function of the band 4, described in the present embodiment, the 3rd valve port and the 4th valve port are step trough structure, while realizing differential function, by changing the displacement amount of spool, can realize the stepless control of flow.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the cross-sectional schematic of hydrovalve spool described in the embodiment of the present invention when meta;
Fig. 2 is the B-B face sectional view in Fig. 1;
Fig. 3 is the cross-sectional schematic of valve body in Fig. 1;
The spool plan view that Fig. 4 is hydrovalve described in the embodiment of the present invention;
The spool schematic perspective view that Fig. 5 is hydrovalve described in the embodiment of the present invention.
Description of reference numerals:
1-valve body, 11-first undercut groove, 12-second undercut groove, 13-the 3rd undercut groove, 14-the 4th undercut groove, 15-the 5th undercut groove, 16-the 6th undercut groove, 2-spool, the left shoulder of 21-, the left axle journal of 22-, shoulder in 23-, 231-circular groove, 232-second valve port, 233-first valve port, 234-the 3rd valve port, the right axle journal of 24-, the right shoulder of 25-, 251-the 4th valve port, 3-flow regulator, P-filler opening, T-return opening, A, B-actuator port.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 to Fig. 5 is the relevant drawings of the present embodiment, as shown in FIG., the slide valve type hydraulic valve of the differential function of the band described in the present embodiment, the spool 2 comprising valve body 1 and be arranged in valve body 1 hole, the first undercut groove 11 is sequentially provided with in this valve body 1 hole, second undercut groove 12, 5th undercut groove 15, 6th undercut groove 16, 3rd undercut groove 13 and the 4th undercut groove 14, this first undercut groove 11 is communicated with oil return inlet T with the 4th undercut groove 14, this second undercut groove 12 and the 3rd undercut groove 13 respectively with actuator port A, actuator port B is communicated with, 5th undercut groove 15, 6th undercut groove 16 is communicated with oil inlet P, this oil inlet P is also provided with flow regulator 3.
This spool 2 comprises left shoulder 21, left axle journal 22, middle shoulder 23, right axle journal 24 and right shoulder 25 from left to right, in this, the cylindrical of shoulder 23 left part is provided with circular groove 231 and disconnected first valve port 233, second valve port 232 mutually, this first valve port 233 is communicated with left axle journal 22, this second valve port 232 is communicated with circular groove 231, in this shoulder 23 right part cylindrical on be respectively equipped with on the cylindrical of right shoulder 25 left part the 3rd valve port 234, the 4th valve port 251 that are communicated with right axle journal 24; Wherein, the first valve port 233, the 3rd valve port 234 and the 4th valve port 251 are step trough structure, are all provided with two, and be all separately positioned on end face and the bottom surface of spool 2, this second valve port 232 is bar-shaped trough structure, is also provided with two, is separately positioned on the both sides, front and back of spool 2.
When spool 2 is in meta, this left shoulder 21 closes the first undercut groove 11, middle shoulder 23 closes the 5th undercut groove 15 and the 6th undercut groove 16, right shoulder 25 closes the 4th undercut groove 14, this left axle journal 22, first valve port 233 is communicated with the second undercut groove 12, this second valve port 232, circular groove 231 are communicated with the 5th undercut groove 15, and the 3rd valve port 234, the 4th valve port 251 and right axle journal 24 are communicated with the 3rd undercut groove 13.
When actuator port A is communicated with the rod chamber of oil cylinder, when actuator port B is communicated with the rodless cavity of oil cylinder, if spool 2 moves right, then actuator port A is communicated with oil inlet P by the second undercut groove 12, first valve port 233, the 5th undercut groove 15, actuator port B is communicated with oil return inlet T by the 3rd undercut groove 13, the 4th valve port 251, the 4th undercut groove 14, makes oil cylinder complete retracting action; If spool 2 is moved to the left, then actuator port A is communicated with oil inlet P by the second undercut groove 12, second valve port 232, circular groove 231, the 5th undercut groove 15, actuator port B is communicated with oil inlet P by the 3rd undercut groove 13, the 3rd valve port 234, the 6th undercut groove 16, realize differential connection, thus reach the object that oil cylinder stretches out speed-raising.And because the first valve port 233, the 3rd valve port 234 and the 4th valve port 251 are step trough structure, so the displacement amount by changing spool 2, the stepless control of flow can be realized easily.
In other embodiments, the second valve port 232 also can be step trough structure or leg-of-mutton channel-shaped structure.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the slide valve type hydraulic valve of the differential function of band, comprise valve body (1) and be arranged on the spool (2) in valve body (1) hole, it is characterized in that, the first undercut groove (11) is sequentially provided with in described valve body (1) hole, second undercut groove (12), oil-feed undercut groove, 3rd undercut groove (13), 4th undercut groove (14), described first undercut groove (11) is communicated with return opening with the 4th undercut groove (14), described second undercut groove (12) is communicated with actuator port (A) and another actuator port (B) respectively with the 3rd undercut groove (13), described oil-feed undercut groove is communicated with two filler openings (P), described oil-feed undercut groove comprises the 5th undercut groove (15) and the 6th undercut groove (16),
Described spool (2) comprises left shoulder (21) from left to right, left axle journal (22), middle shoulder (23), right axle journal (24) and right shoulder (25), the cylindrical of described middle shoulder (23) left part is provided with circular groove (231), disconnected first valve port (233) and the second valve port (232) mutually, described first valve port (233) is communicated with described left axle journal (22), described second valve port (232) is communicated with described circular groove (231), the cylindrical of described middle shoulder (23) right part is respectively equipped with on the cylindrical of described right shoulder (25) left part the 3rd valve port (234) and the 4th valve port (251) that are communicated with described right axle journal (24),
When spool (2) is in meta, described left shoulder (21), middle shoulder (23), right shoulder (25) close described first undercut groove (11), oil-feed undercut groove, the 4th undercut groove (14) respectively, described left axle journal (22), the first valve port (233) are communicated with the second undercut groove (12), described second valve port (232), circular groove (231) are communicated with oil-feed undercut groove, and described 3rd valve port (234), the 4th valve port (251) and right axle journal (24) are communicated with described 3rd undercut groove (13);
When described actuator port (A) is communicated with the rod chamber of oil cylinder, when described another actuator port (B) is communicated with the rodless cavity of oil cylinder, if described spool (2) is moved to the left, then described actuator port (A) is by described second undercut groove (12), described second valve port (232), described circular groove (231), described 5th undercut groove (15) is communicated with in described two filler openings (P), described another actuator port (B) is by described 3rd undercut groove (13), described 3rd valve port (234), described 6th undercut groove (16) is communicated with another in described two filler openings (P).
2. the slide valve type hydraulic valve of the differential function of band according to claim 1, is characterized in that, described first valve port (233) and/or the 3rd valve port (234) and/or the 4th valve port (251) are step trough structure.
3. the slide valve type hydraulic valve of the differential function of band according to claim 2, is characterized in that, described second valve port (232) is bar-shaped trough structure, step trough structure or triangle channel-shaped structure.
4. the slide valve type hydraulic valve of the differential function of band according to claim 1,2 or 3, it is characterized in that, the quantity of described first valve port (233) and/or the 3rd valve port (234) and/or the 4th valve port (251) is two and is evenly distributed on the cylindrical of described spool (2).
5. the slide valve type hydraulic valve of the differential function of band according to claim 4, is characterized in that, described second valve port (232) is provided with two, and and described first valve port (233) interval arrange.
6. the slide valve type hydraulic valve of the differential function of band according to claim 1,2 or 3, it is characterized in that, described filler opening is also provided with flow regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351481.1A CN102889257B (en) | 2012-09-20 | 2012-09-20 | Slide valve type hydraulic valve with differential motion function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210351481.1A CN102889257B (en) | 2012-09-20 | 2012-09-20 | Slide valve type hydraulic valve with differential motion function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102889257A CN102889257A (en) | 2013-01-23 |
| CN102889257B true CN102889257B (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210351481.1A Active CN102889257B (en) | 2012-09-20 | 2012-09-20 | Slide valve type hydraulic valve with differential motion function |
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| Country | Link |
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| CN (1) | CN102889257B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205383298U (en) * | 2016-01-12 | 2016-07-13 | 郑瑞源 | Structure of rotation type hydrovalve improvement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151787A (en) * | 1994-06-27 | 1997-06-11 | 株式会社小松制作所 | Directional control valve device produced with a pressure compensating valve |
| CN1346941A (en) * | 2000-09-29 | 2002-05-01 | 株式会社小松制作所 | Flow direction control valve |
| CN2654918Y (en) * | 2003-07-18 | 2004-11-10 | 天津特精液压股份有限公司 | Electric forklift multi-way valve with middle position throttle function |
| CN201574432U (en) * | 2009-12-16 | 2010-09-08 | 青岛凯锐斯通液压机械有限公司 | Rotary control valve |
| CN202280678U (en) * | 2011-10-08 | 2012-06-20 | 浙江圣邦机械有限公司 | Load sensitive control link added on six-way multipath valve |
| CN202833385U (en) * | 2012-09-20 | 2013-03-27 | 三一重工股份有限公司 | Slide valve type hydraulic valve with differential function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3144914B2 (en) * | 1992-10-29 | 2001-03-12 | 日立建機株式会社 | Hydraulic control valve device |
| JPH07279906A (en) * | 1994-03-31 | 1995-10-27 | Kayaba Ind Co Ltd | Hydraulic control |
-
2012
- 2012-09-20 CN CN201210351481.1A patent/CN102889257B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151787A (en) * | 1994-06-27 | 1997-06-11 | 株式会社小松制作所 | Directional control valve device produced with a pressure compensating valve |
| CN1346941A (en) * | 2000-09-29 | 2002-05-01 | 株式会社小松制作所 | Flow direction control valve |
| CN2654918Y (en) * | 2003-07-18 | 2004-11-10 | 天津特精液压股份有限公司 | Electric forklift multi-way valve with middle position throttle function |
| CN201574432U (en) * | 2009-12-16 | 2010-09-08 | 青岛凯锐斯通液压机械有限公司 | Rotary control valve |
| CN202280678U (en) * | 2011-10-08 | 2012-06-20 | 浙江圣邦机械有限公司 | Load sensitive control link added on six-way multipath valve |
| CN202833385U (en) * | 2012-09-20 | 2013-03-27 | 三一重工股份有限公司 | Slide valve type hydraulic valve with differential function |
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| CN102889257A (en) | 2013-01-23 |
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