CN2247735Y - Combined integrated block hydraulically balanced valve - Google Patents
Combined integrated block hydraulically balanced valve Download PDFInfo
- Publication number
- CN2247735Y CN2247735Y CN 95236163 CN95236163U CN2247735Y CN 2247735 Y CN2247735 Y CN 2247735Y CN 95236163 CN95236163 CN 95236163 CN 95236163 U CN95236163 U CN 95236163U CN 2247735 Y CN2247735 Y CN 2247735Y
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- chamber
- communicated
- damping hole
- 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
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Abstract
The utility model relates to a combined integrated block hydraulically balanced valve, which is composed of a control valve, a pilot valve and a main valve; a maintaining valve is added to be combined to form a hydraulic integrated block together with a valve body; the control valve and the main valve are arranged in parallel, and the maintaining valve is arranged above the control valve and the main valve; the pilot valve is sheathed in the main valve, wherein, each valve is composed of a valve body and a valve core and is provided with two cavities, and the valve core is connected with the valve body by a spring. A plurality of damping holes are slickly arranged in the combined integrated block hydraulically balanced valve, low frequency dithering in the process of weight falling is eliminated, and security of falling weight is enhanced by the added maintaining valve so that the operation is more reliable. The utility model has the advantages of simple structure and easy fabrication.
Description
The utility model relates to a kind of hydrovalve, particularly hydraulically balanced valve.
Existing hydraulically balanced valve mainly is made of control valve and main valve, common in the engineering machinery have two kinds of single-stage and leading types, single-stage main valve and control valve are for to connect side by side, the leading type main valve is nested the connection with control valve, main valve and control valve include valve body and spool separately, and spool mat spring connects with valve body, and there are two defectives in its performance of existing hydraulically balanced valve, the one, produce low-frequency jitter in the decline weight process, the one, Security is not enough.
The purpose of this utility model is to design a kind of hydraulically balanced valve, adopts combined type to increase a maintaining valve.And some damping holes are set dexterously in equilibrium valve to solve descender process medium and low frequency jitter problem and to improve Security.
Technical solution of the present utility model is as follows, a kind of combined type integrated package hydraulically balanced valve, and by control valve, pilot valve, main valve constitutes.Wherein each valve includes valve body and spool, and each valve all has two chambeies, front and back.The equal mat spring of each spool is connected with valve body, comprises a maintaining valve in the combined type integrated package hydraulically balanced valve, and maintaining valve is made of valve body and spool, two chambeies before and after including, and spool mat spring connects with valve body; Control valve, pilot valve, main valve and maintaining valve are combined into a hydraulic manifold block, be total to same valve body, arranged side by side about control valve and main valve, both are connected by connection chamber, pilot valve is sleeved in the main valve, its spool slides in the valve core of main valve, and maintaining valve places control valve and main valve top, and the ante-chamber of main valve is communicated with maintaining valve back cavity mat oil duct; Control valve spool and back cavity valve body sliding sleeve connection place have the groove of crescent section on spool; Be provided with following damping hole in the combined type integrated package hydraulically balanced valve;
A, control valve ante-chamber end control oil channel inlet are communicated with ante-chamber through resistance hole a.
There is damping hole b to be communicated with the spool both sides on b, the control valve ante-chamber valve.
There is damping hole c to be communicated with spool front side back cavity and connection chamber on c, the control valve back cavity spool.
There is damping hole d to be communicated with back cavity and connection chamber on d, the control valve valve body.
There is damping hole e to connect spool vertically on e, the pilot valve core.
There is damping hole f to be communicated with the chamber, front and back on f, the valve body of main valve.
Description of drawings is as follows:
Fig. 1 is a combined type integrated package hydraulically balanced valve structural representation
Fig. 2 is the hydraulic mechanism system connection diagram that combined type integrated package hydraulically balanced valve is used for the lifting weight
This practicality further specifies as follows in conjunction with instantiation referring to accompanying drawing:
Combined type integrated package hydraulically balanced valve is constituted by control valve (1) pilot valve (5), main valve (6), and wherein each valve all includes valve body and spool, and each valve all have before and after two chambeies, each valve core mat spring and valve body link; Comprise a maintaining valve (8) in the combined type integrated package hydraulically balanced valve, maintaining valve (8) is made of valve body and spool, includes two chambeies, and the existing valve body of spool mat spring connects, and is ante-chamber with left chamber all in above-mentioned each valve, and right chamber is a back cavity; Control valve (1), pilot valve (5), main valve (6) connect valve (8) with the guarantor and are combined into a hydraulic manifold block, be total to same valve body, arranged side by side about control valve (1) and main valve (6), both join by connection chamber (3), pilot valve (5) is sleeved in the main valve (6), its spool slides in main valve (6) spool, and maintaining valve (8) places control valve (1) and main valve (6) top, and main valve (6) ante-chamber is communicated with maintaining valve (8) back cavity mat oil duct (7); The valve body sliding sleeve connection place of control valve (1) spool and back cavity end has crescent section groove (2) on spool; Combined type integrated package hydraulically balanced valve is provided with following damping hole:
A. control valve (1) ante-chamber end, control oil channel inlet (10) is communicated with ante-chamber through damping hole a.
There is damping hole b to be communicated with the spool both sides on b, control valve (1) the ante-chamber spool.
There is damping hole c to be communicated with the back cavity and the connection chamber (3) of spool front side on c, control valve (1) the back cavity spool.
There is damping hole d to be communicated with back cavity and connection chamber (3) on d, control valve (1) valve body.
There is damping hole e to connect spool vertically on e, pilot valve (5) spool.
There is damping hole f to be communicated with the chamber, front and back on f, main valve (6) valve body.
There is damping hole h to be communicated with back cavity and this end valve core end face on h, maintaining valve (8) spool.
There is damping hole i to be communicated with ante-chamber and this end valve core end face on i, maintaining valve (8) spool.
There is unloading hole g to be communicated with spool thread form last month section grooves (2) and connection chamber (3) on control valve (1) spool.
Above-mentioned damping hole a, b, c, d, e, f, h, i and unloading hole g are little duct.
Have 3 on the combined type integrated package hydro-cushion valve body and go out oiler, one is control oil channel inlet (10), and on the valve body of control valve (1) ante-chamber end, inlet (10) is communicated with control valve (1) ante-chamber; The one, working connection restriction (4) on the valve body of connection chamber (3) below, is communicated with connection chamber (3); Another working connection restriction (9) is communicated with ante-chamber on the valve body of maintaining valve (8) ante-chamber top.
The utility model is used in combination example its working principle is described, referring to Fig. 2, the upper end oil circuit restriction (9) of combined type integrated package hydraulically balanced valve connects with the lower oil cavitie of hydraulic jack (14), its lower end restriction (4) connects with selector valve (13), selector valve (13) is manual three position four-way directional control valve, and hydraulic jack (14) epicoele is connected with selector valve (13) with the control oil-in (10) of combined type integrated package hydraulically balanced valve respectively.Two other passway of selector valve (13), a mouth takes back fuel tank (16) through the oil pressure pipeline, and another mouthful mat oil pressure pipeline is attached to fuel reserve tank (15) through oil hydraulic pump (11) and relief valve (12) respectively.Combined type integrated package hydraulically balanced valve mainly contains four kinds of operating modes:
1) weight lifting rising operating mode
When the work of position, hand-operated direction valve (a 13) left side, the outlet pressure of oil hydraulic pump (11) has overcome spring force and the hydraulic coupling on the main valve (6), and main valve (6) is opened, and high pressure oil enters the cavity of resorption of hydraulic jack (14), and weight rises.In the case, equilibrium valve is equivalent to one-way valve, and control valve (1) is inoperative.
2) carry static operating mode
When hand-operated direction valve (13) when being positioned at meta, control valve (1) spool is in left end under the spring force effect, main valve (6) spool is closed under the effect of spring force and main valve (6) back cavity hydraulic coupling, and its conical surface can be realized reliable sealing again, and weight is rested on a certain position at any time reliably.
3) load decline operating mode
When the work of the right position of hand-operated direction valve (13), high pressure oil is when flowing to oil hydraulic cylinder (14) epicoele, part high pressure oil is by control oil-in (10), behind damping hole a, act on control valve (1) spool, when pilot pressure reaches certain value, the spring force that overcomes control valve (1) spool moves to left the control spool, back down pilot valve (5) spool earlier, then back down main valve (6) spool, this moment, oil cylinder (14) cavity of resorption pressure oil can flow back to fuel tank (15) through main valve (6) restriction (9), (4); When the withdrawing oil flow excessive, when the weight rate of descent is too fast, because in-line fuel delivery deficiency, the pilot pressure road is reduced, and control valve (1) spool moves to right, and main valve (6) meter out mouth (4) area is reduced, restriction weight rate of descent, thus reach a kind of transient equiliblium.
4) safety control operating mode
When the equilibrium valve proper functioning, maintaining valve (8) spool is in the left end condition that often goes into operation under the spring force effect, and at this moment maintaining valve (8) is inoperative, has only equilibrium valve to work in the loop.In case equilibrium valve breaks down, damping hole a as control oil channel inlet (10) blocks, main valve (6) is return to the right, at this moment the rate of descent of oil cylinder (14) increases rapidly, when oily stall, pressure reduction will overcome the spring force of maintaining valve (8), and maintaining valve (8) cuts out rapidly, can avoid oil cylinder to continue to descend.
Advantage of the present utility model is that combined type integrated package hydraulically balanced valve is provided with some damping holes dexterously, has eliminated the low-frequency jitter in the decline weight process; Increased maintaining valve the Security of its work is improved greatly, moved more reliable; And combined type integrated package hydraulically balanced valve is simple in structure, is easy to make.
Claims (3)
1, a kind of combined type integrated package hydraulically balanced valve, by control valve, pilot valve, main valve constitutes, wherein each valve includes valve body and spool, and each valve all have before and after two chambeies, the equal mat spring of each spool connects with valve body, it is characterized in that:
(1) comprise a maintaining valve in the combined type integrated package hydraulically balanced valve, maintaining valve is made of valve body and spool, two chambeies before and after including, and spool mat spring connects with valve body,
(2) control valve, pilot valve, main valve and maintaining valve are combined into a hydraulic manifold block, be total to same valve body, arranged side by side about control valve and main valve, both link by connecting the chamber, pilot valve is sleeved in the main valve, its spool slides in the valve core of main valve, and maintaining valve places control valve and main valve top, and the ante-chamber of main valve is communicated with maintaining valve back cavity mat oil duct;
(3) control valve spool and back cavity valve body sliding sleeve connection place have the groove of crescent section on spool;
(4) to being provided with following damping hole in the box-like integrated package hydraulically balanced valve:
A, control valve ante-chamber end control oil channel inlet are communicated with ante-chamber through damping hole a
There is damping hole b to be communicated with the spool both sides on b, the control valve ante-chamber spool
There is damping hole c to be communicated with spool front side back cavity and connection chamber on c, the control valve back cavity spool
There is damping hole d to be communicated with back cavity and connection chamber on d, the control valve valve body
There is damping hole e to connect spool vertically on e, the guide's spool
There is damping hole f to be communicated with the chamber, front and back on f, the valve body of main valve.
2, combined type integrated package hydraulically balanced valve according to claim 1 is characterized in that:
(1) there is damping hole h to be communicated with back cavity and this end valve core end face on the maintaining valve spool.
(2) there is damping hole i to be communicated with ante-chamber and this end valve core end face on the maintaining valve spool.
3, combined type integrated package hydraulically balanced valve according to claim 1 is characterized in that having on its control valve spool unloading hole to be communicated with spool thread form last month section grooves and connection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236163 CN2247735Y (en) | 1995-01-27 | 1995-01-27 | Combined integrated block hydraulically balanced valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95236163 CN2247735Y (en) | 1995-01-27 | 1995-01-27 | Combined integrated block hydraulically balanced valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2247735Y true CN2247735Y (en) | 1997-02-19 |
Family
ID=33879240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95236163 Expired - Fee Related CN2247735Y (en) | 1995-01-27 | 1995-01-27 | Combined integrated block hydraulically balanced valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2247735Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135398B (en) * | 2006-08-28 | 2010-10-13 | 贺勍 | Combining method for returning place force of balanced valve overlapped by seal pressure and spring force |
| CN102536943A (en) * | 2012-02-24 | 2012-07-04 | 徐州重型机械有限公司 | Balance valve as well as winch system and crane provided with same |
| CN103343829A (en) * | 2013-07-24 | 2013-10-09 | 南京工业大学 | Balance valve and testing system thereof |
| CN103742473A (en) * | 2013-12-31 | 2014-04-23 | 浙江大学 | Split type pilot load control valve |
| CN104763822A (en) * | 2015-04-23 | 2015-07-08 | 圣邦集团有限公司 | Load maintaining valve |
| CN110832172A (en) * | 2017-09-19 | 2020-02-21 | 伊希欧1控股有限公司 | Oil control valve for controlling a cam phaser with a spool positioned by an external actuator and including a groove |
-
1995
- 1995-01-27 CN CN 95236163 patent/CN2247735Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135398B (en) * | 2006-08-28 | 2010-10-13 | 贺勍 | Combining method for returning place force of balanced valve overlapped by seal pressure and spring force |
| CN102536943A (en) * | 2012-02-24 | 2012-07-04 | 徐州重型机械有限公司 | Balance valve as well as winch system and crane provided with same |
| CN102536943B (en) * | 2012-02-24 | 2015-06-17 | 徐州重型机械有限公司 | Balance valve as well as winch system and crane provided with same |
| CN103343829A (en) * | 2013-07-24 | 2013-10-09 | 南京工业大学 | Balance valve and testing system thereof |
| CN103343829B (en) * | 2013-07-24 | 2015-06-03 | 南京工业大学 | Balance valve and testing system thereof |
| CN103742473A (en) * | 2013-12-31 | 2014-04-23 | 浙江大学 | Split type pilot load control valve |
| CN103742473B (en) * | 2013-12-31 | 2015-12-09 | 浙江大学 | Split type pilot load control valve |
| CN104763822A (en) * | 2015-04-23 | 2015-07-08 | 圣邦集团有限公司 | Load maintaining valve |
| CN104763822B (en) * | 2015-04-23 | 2017-02-01 | 圣邦集团有限公司 | Load maintaining valve |
| CN110832172A (en) * | 2017-09-19 | 2020-02-21 | 伊希欧1控股有限公司 | Oil control valve for controlling a cam phaser with a spool positioned by an external actuator and including a groove |
| CN110832172B (en) * | 2017-09-19 | 2021-11-26 | 伊希欧1控股有限公司 | Oil control valve with spool having groove for controlling cam phaser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |