CN203641655U - Cartridge valve opening limit regulator - Google Patents
Cartridge valve opening limit regulator Download PDFInfo
- Publication number
- CN203641655U CN203641655U CN201320798264.7U CN201320798264U CN203641655U CN 203641655 U CN203641655 U CN 203641655U CN 201320798264 U CN201320798264 U CN 201320798264U CN 203641655 U CN203641655 U CN 203641655U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- spacing mandril
- spool
- housing
- cartridge valve
- 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 - Lifetime
Links
- 239000003921 oil Substances 0.000 claims abstract description 28
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000003449 preventive effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to a cartridge valve opening limit regulator comprising a shell, a drive mechanism, a spindle, a limit ejector rod, a spool and a valve bush. The drive mechanism is fixedly connected with one end of the spindle. The other end of the spindle is connected with one end of the limit ejector rod through a threaded drive assembly; the other end of the limit ejector rod is inserted into a control cavity of the spool. A stop mechanism is arranged between the shell and the limit ejector rod. Pilot hydraulic oil enters the control cavity of the spool through an oil passage in the shell; the limit ejector rod is full immerged in the hydraulic oil in the control cavity of a cartridge valve, and hydraulic pressure that is experienced is automatically balanced. All threaded drive assemblies among a bearing, the spindle and the limit ejector rod are immerged in the oil, self-lubrication is achieved, service lives of the parts are prolonged, and regulating precision of the parts is improved.
Description
Technical field
The utility model belongs to hydrovalve technical field, relates to a kind of cartridge valve aperture means for adjusting limit of movement.
Background technique
Between traditional cartridge valve spacing mandril and the cover plate of cartridge valve, directly adopt and be threaded, regulate its position with respect to plug-in mounting spool by rotary spacing push rod, thereby change the maximum opening of cartridge valve.The shortcoming of this mode is: only some is immersed in the hydraulic pressure cavity volume being communicated with plug-in mounting spool control chamber spacing mandril, suffered hydraulic coupling does not have complete equilibrium, therefore in the time that in cartridge valve control chamber, oil liquid pressure is higher, on push rod, bear larger axial force, this axial force acts directly on the screw pair that transmission uses, and causes the rotational resistance of spacing mandril to increase, and screw thread transmission is wearing and tearing and locked easily, be not suitable for driving with motor, cannot realize automatic control.
Summary of the invention
The purpose of this utility model, for the deficiencies in the prior art, provides a kind of cartridge valve aperture means for adjusting limit of movement.
The utility model device comprises housing, driving mechanism, main shaft, spacing mandril, spool, valve pocket; Be fixedly connected with from top to bottom the housing that forms the utility model device by mounting bracket, bell jar, base plate; In housing, be provided with successively from top to bottom main shaft, spacing mandril, the output shaft of driving mechanism is fixedly connected with one end of main shaft, the other end of main shaft is connected with one end of spacing mandril by screw thread transmission, the other end of spacing mandril inserts the control chamber of spool, for limiting the maximum opening of spool with respect to valve pocket.Guide's hydraulic oil enters the control chamber of cartridge valve by housing.Spool is located at valve pocket inside, and the bottom of valve pocket has actuator port A, and side has actuator port B.When the oil pressure of spool control chamber is during higher than the oil pressure of actuator port A and actuator port B, spool moves downward, and cuts off the oil circuit between actuator port A and actuator port B.When the oil pressure of spool control chamber is during lower than the oil pressure of actuator port A and actuator port B, spool moves upward under the oil pressure effect of actuator port A and actuator port B, until contact with spacing mandril, impel the valve port between actuator port A and actuator port B to open, the maximum opening of valve port is determined by the position of spacing mandril.
Between housing and spacing mandril, be provided with rotation preventive mechanism, for prevent spacing mandril follow main shaft rotate, spacing mandril can only be along its axial motion.Can be the mode of following two kinds of realizations: first kind of way is driven vertically guiding groove on spacing mandril, the while installs standstill locking pin or realizes the structure of identical guide function on housing; The second way is on housing, to drive guiding groove, standstill locking pin is installed on spacing mandril or is realized the structure of identical guide function.
Guide's hydraulic oil can enter cartridge valve control chamber by the oil circuit on housing.This oil circuit can have two kinds of forms: a kind of is to control guide's hydraulic oil to be directly connected with spool control chamber by the pilot control hydraulic fluid port C on housing; Another kind is to be connected with guide's oil-feed port X or guide's return opening Y by the selector valve control spool control chamber being arranged on housing.
Main shaft is connected with bell jar by the first radial bearing, the second radial bearing, to reduce the rotational resistance of main shaft; Main shaft is connected with bell jar by thrust-bearing, for bearing the suffered axial pressure of main shaft, to reduce the rotational resistance of main shaft.
Between main shaft and bell jar, bell jar and base plate, base plate and valve pocket, be equipped with seal ring, for sealing device structure.
Guide's hydraulic oil enters the control chamber of spool by the oil circuit on housing, spacing mandril is immersed in the hydraulic oil in cartridge valve control chamber completely, and suffered hydraulic coupling reaches balance automatically.
Described driving mechanism can adopt manually, stepper motor or the motor with angular displacement feedback, can be with or not be with speed reducer.When driving mechanism adopts stepper motor to drive, angle of eccentricity is open loop control.When driving mechanism adopts the motor with angular displacement feedback, angle of eccentricity is closed loop control.
The regulating method that utilizes said apparatus to carry out spacing mandril is:
Driving mechanism drives main shaft rotation, and main shaft drives spacing mandril to axially move by screw thread transmission, and the whirl-stop device between spacing mandril and housing can only move along its axis spacing mandril and can not rotate with main shaft; The range of spacing mandril is determined by screw thread transmission; By controlling the corner of driving mechanism, regulate Spindle rotation angle degree, indirectly control the axial displacement of spacing mandril.The offset qualification of spacing mandril the maximum opening of valve port.
The beneficial effects of the utility model are:
By spacing mandril is immersed in the hydraulic oil in cartridge valve control chamber completely, make the suffered hydraulic coupling autobalance of spacing mandril, make the resistance to motion of screw thread transmission not be subject to the impact of cartridge valve control chamber oil pressure.In addition, the suffered responsive to axial force of main shaft is on thrust-bearing.Greatly reduce the adjusting resistance at high oil pressure lower limit push rod by above-mentioned measure, thereby can adopt the motor of smaller power to realize the automatic adjusting of spacing mandril.
Screw thread transmission between all bearings, main shaft and spacing mandril is all immersed in hydraulic oil, has realized selflubricating, has improved working life and the degree of regulation of these parts.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the utility model device;
Fig. 2 is the another kind of structural representation of the utility model device;
Embodiment
Below in conjunction with accompanying drawing, the utility model is further analyzed.
As shown in Figure 1, 2, the utility model device comprises housing, driving mechanism 1, main shaft 2, spacing mandril 3, spool 4, valve pocket 5;
Be fixedly connected with from top to bottom by mounting bracket 6, bell jar 7, base plate 8 housing that forms the utility model device; In housing, be provided with successively from top to bottom main shaft 2, spacing mandril 3, the output shaft of driving mechanism 1 is fixedly connected with one end of main shaft 2, the other end of main shaft 2 is connected with one end of spacing mandril 3 by screw thread transmission, the other end of spacing mandril 3 inserts the control chamber 9 of spool 4, for limiting the range of spool 4 with respect to valve pocket 5.Spool 4 is located at valve pocket 5 inside, and the bottom of valve pocket 5 has actuator port A, and side has two symmetrical actuator port B.The state of spool On/Off is determined jointly by the oil pressure of control chamber and the oil pressure of actuator port A and actuator port B.When the oil pressure ratio actuator port A of control chamber and the oil pressure of actuator port B are when high, spool moves downward, until the oil circuit between actuator port A and actuator port B is cut off completely.In the time of the oil pressure ratio actuator port A of control chamber and the low fuel pressure of actuator port B, spool moves upward, until contact with spacing mandril, impels the valve port between actuator port A and actuator port B to open, and the maximum opening of valve port is determined by the position of spacing mandril.
Between housing and spacing mandril 3, be provided with rotation preventive mechanism, for preventing that spacing mandril 3 from following main shaft 2 and rotating, restriction spacing mandril 3 can only be along its axial motion.Can be the mode of following two kinds of realizations: first kind of way is driven vertically guiding groove on spacing mandril 3, the while installs standstill locking pin or realizes the structure of identical guide function on housing; The second way is on housing, to drive guiding groove, standstill locking pin is installed on spacing mandril 3 or is realized the structure of identical guide function.
Guide's hydraulic oil can enter cartridge valve control chamber 9 by the oil circuit on base plate 8.This oil circuit can have two kinds of forms: a kind of form as shown in Figure 1, has pilot control hydraulic fluid port C and is directly connected with spool control chamber on base plate 8, and guide's hydraulic oil is directly introduced spool control chamber by pilot control hydraulic fluid port C; Another kind of form as shown in Figure 2, on base plate 8, have guide's oil-feed port X(high pressure) and guide's return opening Y(low pressure), guide's oil-feed port X is not directly connected with spool control chamber with guide's return opening Y, by selector valve 14 control loops, be that guide's oil-feed port X is connected with control chamber when position as shown in Figure 2, control chamber connects high pressure oil, after selector valve 14 commutations, guide's return opening Y is connected with control chamber, and control chamber connects low pressure oil, to realize off-load.
Between main shaft 2 and bell jar 7, bell jar 7 and base plate 8, base plate 8 and valve pocket 5, be equipped with seal ring, for sealing device structure.
Described driving mechanism 1 can adopt manually, stepper motor or the motor with angular displacement feedback, can be with or not be with speed reducer.When driving mechanism 1 adopts stepper motor to drive, main shaft 2 corners are open loop control.When driving mechanism 1 adopts the motor with angular displacement feedback, main shaft 2 corners are closed loop control.
The regulating method that utilizes said apparatus to carry out spacing mandril 3 is:
Driving mechanism 1 drives main shaft 2 to rotate, and main shaft 2 drives spacing mandril 3 to axially move by screw thread transmission; Whirl-stop device prevents that spacing mandril 3 from following main shaft 2 and rotating, and can only move along its axis; The range of spacing mandril 3 is determined by screw thread transmission; By controlling the corner of driving mechanism 1, regulate main shaft 2 angle of swing, indirectly control the axial displacement of spacing mandril 3.
The bottom filler opening A of valve pocket 5 is connected with oil circuit, oil circuit, by hydraulic oil being sent into the side oil outlet B of valve pocket 5 under the effect of pressure, makes spool 4 be subject to active force upwards, impels spool 4 to move up, until spool 4 touches spacing mandril 3, reach maximum opening.
Above-described embodiment is not that the utility model is not limited only to above-described embodiment for restriction of the present utility model, as long as meet the utility model requirement, all belongs to protection domain of the present utility model.
Claims (2)
1. cartridge valve aperture means for adjusting limit of movement, is characterized in that comprising housing, driving mechanism, main shaft, spacing mandril, spool, valve pocket;
Be fixedly connected with from top to bottom the housing that forms this device by mounting bracket, bell jar, base plate; In housing, be provided with successively from top to bottom main shaft, spacing mandril; The output shaft of driving mechanism is fixedly connected with one end of main shaft, the other end of main shaft is connected with one end of spacing mandril by screw thread transmission, the other end of spacing mandril inserts the control chamber of spool, between housing and spacing mandril, is provided with rotation preventive mechanism, between main shaft and housing, thrust-bearing is installed.
2. cartridge valve aperture means for adjusting limit of movement as claimed in claim 1, it is characterized in that: guide's hydraulic oil enters the control chamber of spool by the oil circuit on housing, spacing mandril is immersed in the hydraulic oil in cartridge valve control chamber completely, and suffered hydraulic coupling reaches balance automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320798264.7U CN203641655U (en) | 2013-12-05 | 2013-12-05 | Cartridge valve opening limit regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320798264.7U CN203641655U (en) | 2013-12-05 | 2013-12-05 | Cartridge valve opening limit regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641655U true CN203641655U (en) | 2014-06-11 |
Family
ID=50872900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320798264.7U Expired - Lifetime CN203641655U (en) | 2013-12-05 | 2013-12-05 | Cartridge valve opening limit regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644365A (en) * | 2013-12-05 | 2014-03-19 | 杭州泛康科技有限公司 | Limiting adjusting device for opening of cartridge valve |
-
2013
- 2013-12-05 CN CN201320798264.7U patent/CN203641655U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644365A (en) * | 2013-12-05 | 2014-03-19 | 杭州泛康科技有限公司 | Limiting adjusting device for opening of cartridge valve |
| CN103644365B (en) * | 2013-12-05 | 2017-01-18 | 杭州泛康科技有限公司 | Limiting adjusting device for opening of cartridge valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |