CN2278805Y - Hand-operated control valve - Google Patents
Hand-operated control valve Download PDFInfo
- Publication number
- CN2278805Y CN2278805Y CN 96220781 CN96220781U CN2278805Y CN 2278805 Y CN2278805 Y CN 2278805Y CN 96220781 CN96220781 CN 96220781 CN 96220781 U CN96220781 U CN 96220781U CN 2278805 Y CN2278805 Y CN 2278805Y
- Authority
- CN
- China
- Prior art keywords
- spool
- valve body
- control valve
- valve
- control
- 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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- Mechanically-Actuated Valves (AREA)
- Servomotors (AREA)
Abstract
The utility model relates to a hand-operated control valve which belongs to a hydraulic drive control component. A valve body is provided with a drive mechanism connected with a controlled liquid path. The other end of the drive mechanism acts on an operating mechanism of the control valve, the acting direction is a direction in which the operating position of the control valve is maintained and the acting force is larger than the force which is transmitted from the controlled liquid path and is used for changing the operating position of the control valve. A blocking mechanism can maintain the operating position of the control valve and can be deactivated by reverse operation force. Under the condition, a problem that the control valve operated by hands can not work normally can be easily solved.
Description
The utility model belongs to control block hydraulic unit with, relates generally to the fixing dependency structure in movable part working position in the valve.
Known hand-operated direction valve desire control liquid road pressure with keep selector valve position force direction when opposite, then need have corresponding steering force to keep the proper functioning of selector valve, otherwise the working position of selector valve just is difficult to keep.This condition hand-operated direction valve and therewith operating conditions all be ubiquitous problem in other control valve similarly.
The purpose of this utility model is to propose steering force direction in the liquid road pressure of controlled valve control and this valve position state of a control of maintenance when opposite, can keep the control valve organization plan of control valve proper functioning.
The utility model purpose is to realize like this, the hand control valve that has the hydraulic pressure locking mechanism comprises valve body, be slidingly matched with valve body and can form the secondary spool that is sealed and matched with the valve seat that fixedly links with valve body, in the sealing pair both sides, be subjected to the control of described sealing pair and be provided with the controlled hydraulic channel of joining interface in valve body surface, and spool links, can drive spool finishes change between the different operating position, is supported in the transmission operating device of valve body, and each parts and realize the parts of liquid road sealing of being connected and fixed.In valve body, also be provided with simultaneously the hydraulic transmission part that can link with controlled high pressure liquid road, the output terminal of this transmission part or link through the operation control mechanism of driving mechanism and described spool again, this output action is identical with the action direction of spool operation driving mechanism, can produce spool and control the power of liquid road, and occur in this steering force drive connection opposite with the pressure effect of desiring to keep state of a control liquid road to the spool active force greater than spool.Like this, former transmission can be finished the transmission agency of original structure, realizes the change of controlled spool working position; Hydraulic transmission part then can be after operation be finished, borrow the described hydraulic transmission part of setting up, former driving mechanism by the controlled passage high pressure, spool is fixed on the position of operating after changing, has realized self-locking, thereby finished the invention task that the model utility purpose proposes the spool operation.
The utility model is with the selection of simple liquid road pressure drive mechanism and this driving force point of action and size, realized locking effect to the operating device working state, solved the problem that manual-operating mechanism is difficult to apply extended operation power exactly, made this mechanism's working stability reliable.Accompanying drawing provides the signal of the utility model example structure.
Fig. 1 is the manual pilot valve of hydraulic support that has locking mechanism;
Fig. 2 is this hand control valve.
Among the figure: 1, Joystick 2, resilient key 3, push rod 4, dust ring 5, gland 6, locking push rod 7, locking top stem casing 8, seal ring 9, seal ring 10, working hole 11, top stem casing 12, locking sap cavity 13, back fluid spool 14, valve seat 15, feed liquor spool 16, spring seat 17, seal ring 18, feed liquor screw plug 19, spring 20, valve body 21, liquid entering hole 22, liquid return hole 23, connecting bolt hole
Below in conjunction with embodiment the utility model is further specified:
Embodiment 1:
The hand control valve of first embodiment's band locking mechanism is used as the manual pilot valve of the manual guide's control system of hydraulic support, realizes the control that support is moved by the piston of control main control valve.Be mainly used in control and require the pushing and sliding of locking to move, or the locking of other action, realize the pushing and sliding locking of hydraulic support.This valve nominal pressure 31.5 MPas in such cases, 8 liters/minute of nominal flow rates, 20 millimeters of through hole φ, 123 * 117 * 32 millimeters of boundary dimension, 128 millimeters of decreased food, 12 square millimeters of locking push rod effective pressure areas, blocking force F=40 kilogram.
This example is provided with external surface in a side of the service aisle 10 of valve body and communicates, the cylindrical passageway 12 of vertical service aisle, be equipped with in the passage and passage 12 sealed sliding locking push rod 6 movingly, and seal ring 8 and top stem casing 7, its rod end and passage can form locking sap cavity 12, bar is held outside the extended valve body in addition, and can contact with the operating end of the operating grip 1 of spool 15, its this vertical handle arm of force of its direction, this moment, spool was in that to make service aisle be the working position of high hydraulic transmission fluid, and 6 pairs of handle effects of push rod are identical with the direction of action required power.The area of push rod 6 plugs is 12 square millimeters in this example, 20 millimeters of the active force brachiums on handle 1, and the spool operation arm of force is 15 millimeters, 13 square millimeters of spool pressure-bearing useful area, all the other structures of valve are with conventional identical.
Concrete working procedure is as described below: when this valve was not handled, feed liquor spool 15 formed the feed liquor sealing with valve seat 14 under the effect of spring 9, and this moment, back fluid spool 13 was in opening state, and working hole 10 links with liquid return hole 22, and oil cylinder is failure to actuate.When the pushing and sliding of needs support, lift handle with hand, push rod 3 is depressed, promote back fluid spool 13 and move to right, press to valve seat, overcome spring force simultaneously and transmission fluid pressure is opened the feed liquor valve, and then form back liquid sealing, this moment, working hole 10 was communicated with the high pressure liquid of liquid entering hole 21, made working hole lead to high pressure liquid, and high pressure liquid enters main control valve hydraulic control piston cavity and makes the main control valve commutation, makes and pass jack action realization pushing and sliding.Because locking sap cavity 12 grades and working hole 10 link, the locking sap cavity has also been introduced highly pressurised liquid when working hole is introduced high pressure liquid, this high pressure liquid acts on the locking push rod 6, the locking push rod is moved to left, withstand handle 1 and keep its working position, at this moment, because the selection of point of action and pressurized transmission area, it is afterburning that handle can be continued without hand, and remain on commutation position, so just realized block action.If do not continue to keep the commutation action, can exert oneself to depress handle to the right, remove the locking pressure on the spool 13, spool is subjected to move to left under the effect of spring 19 elastic force and high pressure liquid, returning liquid opening of valves feed liquor valve closes, working hole 10 and locking chamber 12 communicate with low pressure port, and the locking push rod then maintains and is operated on the position of defeating back.
Embodiment 2:
This model utility also is used for the hand control valve of this operation of hydraulic support, it will be with the control valve of locking mechanism and does not process on same valve body with the control valve of locking mechanism, be used for controlling two chambeies of oil cylinder, this two chamber has only a chamber action to need locking, and another chamber action does not need locking.All the other structures and example 1 are identical, and just size is bigger.Relevant parameter is:
The Q=200 liter/minute, pressure P=31.5 MPas, 200 * 150 * 40 millimeters of boundary dimension, 28 millimeters of through-hole diameter φ.100 square millimeters of self-locking push rod effective pressure areas, 40 millimeters of active force brachiums, 10 square millimeters of spool effective pressure areas, 30 millimeters of the spool operation arm of forces.
Claims (1)
1, hand control valve comprises valve body, be slidingly matched with valve body, and can form the secondary spool that is sealed and matched with the valve seat that fixedly links with valve body, controlled by it in the sealing pair both sides, be provided with the controlled hydraulic channel of joining interface in valve body surface, link with spool, can drive spool and finish change between the different operating position, be supported in the transmission operating device of valve body, and the connection and the sealed member of be connected and fixed each parts and the road sealing of realization liquid, it is characterized in that: also be provided with the hydraulic transmission part (6) that links with controlled high pressure liquid road in the valve body, the output terminal of this transmission part or link through driving mechanism and described spool operating device (1) again, this output action is identical with the action direction of spool operation driving mechanism, can produce spool and control the power of liquid road, and occur in the spool steering force drive connection opposite with the pressure effect of desiring to keep state of a control liquid road to the spool active force greater than spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220781 CN2278805Y (en) | 1996-09-10 | 1996-09-10 | Hand-operated control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96220781 CN2278805Y (en) | 1996-09-10 | 1996-09-10 | Hand-operated control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2278805Y true CN2278805Y (en) | 1998-04-15 |
Family
ID=33900940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96220781 Expired - Fee Related CN2278805Y (en) | 1996-09-10 | 1996-09-10 | Hand-operated control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2278805Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371841C (en) * | 2003-04-18 | 2008-02-27 | 沙厄-丹福丝股份有限公司 | Selectable detent relief valve |
-
1996
- 1996-09-10 CN CN 96220781 patent/CN2278805Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100371841C (en) * | 2003-04-18 | 2008-02-27 | 沙厄-丹福丝股份有限公司 | Selectable detent relief valve |
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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 |