CN209494781U - The shock-damping structure of electromagnetism pilot operated directional control valve valve rod - Google Patents
The shock-damping structure of electromagnetism pilot operated directional control valve valve rod Download PDFInfo
- Publication number
- CN209494781U CN209494781U CN201920179581.8U CN201920179581U CN209494781U CN 209494781 U CN209494781 U CN 209494781U CN 201920179581 U CN201920179581 U CN 201920179581U CN 209494781 U CN209494781 U CN 209494781U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- shock
- type slope
- directional control
- damping structure
- 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.)
- Active
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The shock-damping structure of electromagnetism pilot operated directional control valve valve rod, on the valve rod ontology for cylindrical body, valve rod includes left and right symmetrically arranged restricted driving cylinder, support cylinder and slipping cylinders, and the side surface of slipping cylinders is equipped with axially distributed buffer runner；The end of buffer runner is equipped with the oil liquid accommodating groove of invagination.Compared to the prior art, the space for absorbing impact is provided in the critical state of handoff procedure using oil liquid accommodating groove, under the critical pressure of function switching, flow rate working conditions and in valve commutation process, pipeline back pressure is at being gradually reduced state, it ensure that line shock is small, cylinder action is steady, effectively the smoothly conversion of transition actuation inertia.
Description
Technical field
The utility model relates to electromagnetism pilot operated directional control valve PTAB chambers to communicate spool, specifically a kind of electromagnetism liquid controlled reversing
The shock-damping structure of valve valve rod.
Background technique
The open mold circuit of injection molding machine is controlled using electro-hydraulic reversing valve.Referring to Fig. 1 to Fig. 1 b, existing traveller shape is
One column, respectively there are two left restricted driving cylinder 1, the right restricted driving cylinders 2 of the diminution variable diameter of limitation stroke at both ends；Again then toward center
There are two left support cylinder 3, the right support cylinders 4 of support accessory；Intermediate host cylinder is exactly the left sliding for cooperating ontology inner hole
Cylinder 5, right slipping cylinders 6.In the prior art, left slipping cylinders 5, be machined with left and right symmetrical V respectively in right slipping cylinders 6
Type slope slot.And the left and right both ends in each slipping cylinders are asymmetrical design, i.e., the left side of left slipping cylinders 5 is distributed three V
Type slope slot, the right are distributed two V-type slope slots.And intermediate two cylindrical bodies, 5,6 bilateral symmetry, the V-type slope slot
It is used as buffer runner.
Referring in Fig. 6, very unstable sinuous flow is presented in the handoff procedure that function controls in the pressure of system and load, flow
Phenomenon, these energy are amplified under the area effect of executive component (oil cylinder, motor etc.), cause the actuation inertia of equipment can not
Successively decrease, generates board vibration influence precision.
Existing valve rod is due to V-type slope is shorter, opening is smaller, depth is shallower etc., so that the back pressure of pipeline is excessive,
When starting to commutate and commutate in place, solenoid directional control valve can not effectively reduce impact in commutation completely, can make to pipeline or oil cylinder
At impact, oil cylinder is easy to appear shake or creeping phenomenon.
Summary of the invention
The utility model is existing to solve the problems, such as, it is desirable to provide a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod.
In order to achieve the above object, the technical solution adopted in the utility model is set on the valve rod ontology for cylindrical body, valve
Column ontology includes left and right symmetrically arranged restricted driving cylinder, support cylinder and slipping cylinders, and the side surface of slipping cylinders is equipped with edge
The buffer runner being axially distributed；The end of the buffer runner is equipped with the oil liquid accommodating groove of invagination.
Wherein, one end of the buffer runner is opened in the side surface end of slipping cylinders, and the other end is set to slipping cylinders
Side surface in the middle part of.
Wherein, the oil liquid accommodating groove is circular groove, i.e., notch on the side surface is circle.
Wherein, buffer runner is V-type slope slot, i.e., the cross section of buffer runner is V-arrangement.
Wherein, the width of V-type slope slot is shunk from the both ends of slipping cylinders to inner end, also V-shaped.
Wherein, the side surface both ends of the slipping cylinders are equipped with V-type slope slot, and the V-type slope that the both ends are opposite
Slot is interlaced arrangement.
Wherein, the length of V-type slope slot is greater than the half of cylinder axial length.Since V-type slope is longer, pipeline
Back pressure very little simultaneously increases circular groove, and valve impacts very little in commutation, and cylinder action is steady.
Wherein, the left end of slipping cylinders is distributed four V-type slope slots, wherein the top of three V-type slope slots sets circular groove, it is sliding
The right end of dynamic cylinder is distributed four V-type slope slots, and the top of the diagonal V-type slope slot of two of them sets circular groove.
Wherein, V-type slope slot, circular groove are also in left and right be symmetrical arranged in two slipping cylinders on valve rod ontology.
Compared to the prior art, the utility model provides one in the critical state of handoff procedure using oil liquid accommodating groove
The space for absorbing impact, in the critical pressure of function switching, under flow rate working conditions and in valve commutation process, pipeline back pressure at by
Decrescence small state, ensure that line shock is small, and cylinder action is steady, effectively the smoothly conversion of transition actuation inertia；Same
Pressure, under the conditions of flow rate working conditions, flow velocity is more slowly stablized, and spool is more stable in switching and reset.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing valve rod；
Fig. 1 a is the cross-sectional view in the face A-A in Fig. 1；
Fig. 1 b is the cross-sectional view in the face B-B in Fig. 1；
Fig. 2 is the structural schematic diagram of one embodiment of the utility model；
Fig. 2 a is the cross-sectional view in the face A-A in Fig. 2；
Fig. 2 b is the cross-sectional view in the face B-B in Fig. 2；
Fig. 2 c is the cross-sectional view in the face C-C in Fig. 2；
Fig. 2 d is the cross-sectional view in the face D-D in Fig. 2；
Fig. 3 is the operation instruction figure of one embodiment of the utility model；
Fig. 4 is the operation instruction figure of one embodiment of the utility model；
Fig. 5 is the operation instruction figure of one embodiment of the utility model；
Fig. 6 is valve schematic diagram；
Fig. 7 is pressure, the rate curve contrast schematic diagram of new and old structure；
Referring to attached drawing, left restricted driving cylinder 1, right restricted driving cylinder 2, left support cylinder 3, right support cylinder 4, left slipping cylinders 5,
Right slipping cylinders 6, circular groove 7, V-type slope slot 8.
Specific embodiment
Now in conjunction with attached drawing, the utility model is further described.
Referring to Fig. 3 to Fig. 5, Fig. 3 to Fig. 5 shows one embodiment of the utility model, changes for a kind of electromagnetism hydraulic control
To the shock-damping structure of valve valve rod, on the valve rod ontology for cylindrical body；Referring to fig. 2, valve rod ontology includes left and right is symmetrical arranged
Restricted driving cylinder 1/2, support cylinder 3/4 and slipping cylinders 5/6, the side surface of slipping cylinders is equipped with axially distributed buffering
Runner；The end of the buffer runner is equipped with the oil liquid accommodating groove of invagination.
Wherein, one end of the buffer runner is opened in the side surface end of slipping cylinders 5/6, and the other end is set to slide post
The side surface middle part of body 5/6, i.e. oil liquid accommodating groove
Oil liquid accommodating groove is circular groove 7, i.e., the notch on the side surface of valve rod ontology is circle, and depth is shallower, is flat
It is flat-shaped.The circular groove 7 of above-mentioned construction can accommodate oil liquid, and the sky for absorbing Oil shocking can be provided in the critical state of handoff procedure
Between, the effectively smoothly conversion of transition actuation inertia.Reach effectively control actuation inertia, the purpose steadily to commutate.
Wherein, the left end of slipping cylinders 5/6 is distributed four V-type slope slots, wherein the top of three V-type slope slots 8 sets circle
The right end of slot, slipping cylinders 5/6 is distributed four V-type slope slots 8, and the top of the diagonal V-type slope slot 8 of two of them sets circular groove.
V-type slope slot, circular groove are also in left and right be symmetrical arranged in two slipping cylinders on valve rod ontology.
Further, buffer runner is V-type slope slot 8, i.e., the cross section of buffer runner is V-arrangement (sector), and width is certainly
The both ends of slipping cylinders 5/6 are shunk to inner end until interior endvertex, also V-shaped.And the side surface both ends of slipping cylinders 5/6 are equal
It equipped with V-type slope slot, and is interlaced arrangement between opposite V-type slope slot 8.
Preferably, the length of V-type slope slot 8 is greater than the half of cylinder axial length, since V-type slope is longer,
The back pressure very little of pipeline simultaneously increases circular groove, and valve impacts very little in commutation, and cylinder action is steady.
Referring to Fig. 3 to Fig. 5, the Median Function of the present embodiment is PTAB(P pressure oil port；T oil return opening；A oil inlet；B is fuel-displaced
Mouthful.) chamber communicates spool is to be assemblied in the intracorporal sliding cylinder part of valve, there is appropriately designed V-type slope slot in the side surface of column
8, the radially slotted position dimension for side appearance of arranging in pairs or groups；The chamber reserved with each step of ontology inner hole；It acts on, is formed via sliding
The unlatching of chamber is closed, the logic runner of control.
It referring to fig. 4, is middle position state, valve rod ontology Median Function under the action of the spring force of both sides communicates for PTAB, liquid
Pressure oil is that the chamber relationship made as designed by main valve body inner hole and valve rod body diameter is entered from the P chamber of main valve body, is passed through
The V-type slope slot 8 of valve rod ontology reaches A, B, TA and TB chamber, then converges and flow out together from T chamber.
It referring to Fig. 5, moves to left in place, hydraulic oil in main valve coelomopore flow direction is changed to that P-A is logical, B-T is logical.It is dynamic to complete commutation
Make.
Referring to Fig. 6, it is shown that middle position state is the schematic diagram for the valve rod ontology that PTAB is communicated, it is frequently used for drain charge and returns
Road, series loop.Currently, with the update of equipment, operating condition it is more and more harsh, so the pressure of hydraulic system, flow is also
It is higher and higher bigger.The lathes precision machine tools high to oil cylinder stability requirement such as particularly suitable and grinding machine.So the present embodiment
Symmetrical runner design, more rigid, structure is simple, stable supporting surface, which provides, preferably to be guaranteed to fight harsh operating condition.
Referring to Fig. 7, the present embodiment is after changing V-groove, due to having adjusted slope length, opening, depth and angle, especially
It is that machined circular groove 8 at V-type slope groove top end (middle position), under the critical pressure of function switching, flow rate working conditions, is changed in valve
It is in the state that is gradually reduced to pipeline back pressure in the process, pressure signal when traveller ontology switches not deposit like that for another example by existing structure
It is acutely being mutated, the voltage signal variation of pressure sensor is uniformly gentle, ensure that line shock is small, cylinder action is steady.
The present embodiment under the conditions of same pressure, flow rate working conditions, more slowly stablize by flow velocity；Cooperate suitable bullet again
Spring, spool are more stable in switching and reset；That is the switch back of slide core is relatively stable.
The embodiments of the present invention is described above in conjunction with accompanying drawings and embodiments, the structure that embodiment provides not structure
At limitations of the present invention, those skilled in the art in the art can be according to needing to adjust, in appended claims
In the range of make various deformations or amendments in protection scope.
Claims (12)
1. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod, on the valve rod ontology for cylindrical body, valve rod ontology includes
Left and right symmetrically arranged restricted driving cylinder, support cylinder and slipping cylinders, it is characterised in that: the side surface of slipping cylinders is equipped with
Axially distributed buffer runner；The end of the buffer runner is equipped with the oil liquid accommodating groove of invagination.
2. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 1, it is characterised in that: the buffering
One end of runner is opened in the side surface end of slipping cylinders, and the other end is set in the middle part of the side surface of slipping cylinders.
3. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 1 or 2, it is characterised in that: described
Oil liquid accommodating groove is circular groove, i.e., notch on the side surface is circle.
4. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 1 or 2, it is characterised in that: buffering
Runner is V-type slope slot, i.e., the cross section of buffer runner is V-arrangement.
5. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 4, it is characterised in that: the V-type
The width of slope slot is shunk from the both ends of slipping cylinders to inner end, also V-shaped.
6. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 4, it is characterised in that: the sliding
The side surface both ends of cylinder are equipped with V-type slope slot, and the opposite V-type slope slot in the both ends is interlaced arrangement.
7. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 5 or 6, it is characterised in that: V-type is oblique
The length of slope slot is greater than the half of cylinder axial length.
8. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 4, it is characterised in that: slipping cylinders
Left end be distributed four V-type slope slots, wherein the top of three V-type slope slots sets circular groove, the right end of slipping cylinders is distributed four V
The top of type slope slot, the diagonal V-type slope slot of two of them sets circular groove.
9. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 5 or 6, it is characterised in that: sliding
The left end of cylinder is distributed four V-type slope slots, wherein the top of three V-type slope slots sets circular groove, the right end distribution of slipping cylinders
The top of four V-type slope slots, the diagonal V-type slope slot of two of them sets circular groove.
10. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 7, it is characterised in that: slide post
The left end of body is distributed four V-type slope slots, wherein the top of three V-type slope slots sets circular groove, the right end distribution four of slipping cylinders
The top of a V-type slope slot, the diagonal V-type slope slot of two of them sets circular groove.
11. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 8 or 10, it is characterised in that: valve
V-type slope slot, circular groove are also in left and right be symmetrical arranged in two slipping cylinders on column ontology.
12. a kind of shock-damping structure of electromagnetism pilot operated directional control valve valve rod according to claim 9, it is characterised in that: valve rod sheet
V-type slope slot, circular groove are also in left and right be symmetrical arranged in two slipping cylinders on body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179581.8U CN209494781U (en) | 2019-02-01 | 2019-02-01 | The shock-damping structure of electromagnetism pilot operated directional control valve valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179581.8U CN209494781U (en) | 2019-02-01 | 2019-02-01 | The shock-damping structure of electromagnetism pilot operated directional control valve valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209494781U true CN209494781U (en) | 2019-10-15 |
Family
ID=68156487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920179581.8U Active CN209494781U (en) | 2019-02-01 | 2019-02-01 | The shock-damping structure of electromagnetism pilot operated directional control valve valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209494781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864028A (en) * | 2019-11-28 | 2020-03-06 | 宁波文泽机电技术开发有限公司 | Engineering machinery damping control valve |
-
2019
- 2019-02-01 CN CN201920179581.8U patent/CN209494781U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864028A (en) * | 2019-11-28 | 2020-03-06 | 宁波文泽机电技术开发有限公司 | Engineering machinery damping control valve |
| CN110864028B (en) * | 2019-11-28 | 2021-05-11 | 上海诺玛液压系统有限公司 | Engineering machinery damping control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209494781U (en) | The shock-damping structure of electromagnetism pilot operated directional control valve valve rod | |
| CN102312457B (en) | Pressure-feedback-type hydraulic impactor | |
| CN108518370B (en) | A kind of electromagnetic proportional valve of flow saturation resistance | |
| CN203856793U (en) | Balance valve and hydraulic cylinder telescoping control loop with same | |
| CN112196861A (en) | Unloading valve, combination valve comprising same and combination valve type buffer oil cylinder | |
| JP6700137B2 (en) | Flow control valve | |
| EP0787904A1 (en) | Counter-balance valve | |
| CN211843081U (en) | Be applied to special proportion electricity liquid switching-over valve of injection molding machine mould of opening and shutting | |
| CN111706567B (en) | Variable mechanism of load sensitive pump | |
| CN106051185B (en) | A kind of balanced valve built in pooling feature | |
| CN116428232A (en) | Triangular groove overflow hole type hydraulic distributor | |
| CN111520369A (en) | Damping structure of electromagnetic hydraulic control reversing valve column | |
| CN111927848A (en) | Hydraulic buffer oil cylinder | |
| CN210660815U (en) | Constant-speed differential variable oil cylinder | |
| CN215059905U (en) | Valve core of electromagnetic valve and electromagnetic valve | |
| CN2307146Y (en) | Oil pressure cylinder structure with floating buffer and fast starting function | |
| CN203230670U (en) | Stroke control energy-saving cushion valve for pumping oil cylinder for concrete pump | |
| JPH0214587B2 (en) | ||
| JPH05192970A (en) | Injection molding machine | |
| CN201714610U (en) | Variable mechanism of plunger pump | |
| CN103148053A (en) | Stroke control energy-saving buffering method of pumping oil cylinder used for concrete pump | |
| CN219452970U (en) | Improved buffering type electrohydraulic reversing valve | |
| CN215444563U (en) | Controllable double-load electro-hydraulic servo valve | |
| CN216812644U (en) | Hydraulic damper | |
| CN101876303B (en) | Stroking mechanism of plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |