CN207715460U - Hydraulicdirectional control valve reversing oil circuit structure - Google Patents
Hydraulicdirectional control valve reversing oil circuit structure Download PDFInfo
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- CN207715460U CN207715460U CN201721927405.5U CN201721927405U CN207715460U CN 207715460 U CN207715460 U CN 207715460U CN 201721927405 U CN201721927405 U CN 201721927405U CN 207715460 U CN207715460 U CN 207715460U
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Abstract
The utility model is related to a kind of hydraulicdirectional control valves, specifically hydraulicdirectional control valve reversing oil circuit structure, belong to hydraulicdirectional control valve oil channel structures technical field.It includes valve rod and valve body, and valve rod installation cavity is transversely provided in valve body, and valve rod is arranged in valve rod installation cavity, and valve rod can horizontally slip in valve rod installation cavity；Oil suction chamber is respectively arranged on the left side and the right side first annular seal space and the second seal chamber, valve rod is equipped with the first valve stem seal section and the second valve stem seal section, first valve stem seal section can be sealed with first annular seal space to be coordinated, and the second valve stem seal section can be sealed with the second seal chamber to be coordinated；The first valve stem seal section inner end to the second valve stem seal section inner end length is less than oil inlet cavity length in valve body on valve rod so that when first annular seal space and any one sealing of the second seal chamber, another keeps it turning on.The utility model can effectively reduce oil cylinder in reversal valve commutation process and fall degree after rise, avoid the severe vibration in compartment, increase the comfort that user uses.
Description
Technical field
The utility model is related to a kind of hydraulicdirectional control valves, specifically hydraulicdirectional control valve reversing oil circuit structure, belong to liquid
Press reversal valve oil channel structures technical field.
Background technology
With the development of economy, the application of dump truck is more and more extensive, is changed as with the matching used hydraulic pressure of dumper
To valve, extensive development has also been obtained.The hydraulicdirectional control valve that country's dump truck uses at present will appear oil in commutation process
The case where cylinder is fallen after rise, oil cylinder cause the severe vibration in compartment, seriously affect the usage experience of user when falling after rise.
Invention content
In place of the purpose of this utility model is to overcome above-mentioned deficiency, to provide a kind of hydraulicdirectional control valve reversing oil circuit knot
Structure can effectively reduce oil cylinder in reversal valve commutation process and fall degree after rise, avoid the severe vibration in compartment, increasing user makes
Comfort.
According to technical solution provided by the utility model, hydraulicdirectional control valve reversing oil circuit structure includes valve rod and valve body,
It is characterized in：It is transversely provided with valve rod installation cavity in valve body, valve rod is set in valve rod installation cavity, valve rod can be left in valve rod installation cavity
Right sliding；Valve body lower end is equipped with oil inlet, and valve rod installation cavity middle part is oil suction chamber, the oil suction chamber left and right sides towards oil inlet position
It is respectively equipped with first annular seal space and the second seal chamber, valve rod is equipped with the first valve stem seal section and the second valve stem seal section, and first
Valve stem seal section can be sealed with first annular seal space to be coordinated, and the second valve stem seal section can be sealed with the second seal chamber to be coordinated；Institute
It states the first valve stem seal section inner end to the second valve stem seal section inner end length on valve rod and is less than oil inlet cavity length in valve body, the
When one seal chamber and any one sealing of the second seal chamber, another keeps it turning on；Valve body upper end is equipped with oil outlet and oil return opening,
Oil outlet is connected to first annular seal space outboard end, and oil return opening is connected to the second seal chamber outboard end.
Further, the first valve stem seal section includes the first sealing cylinder and first frustum of a cone, the first frustum of a cone major diameter
The first sealing cylinder of end connection, the diameter of the first sealing cylinder are more than the first frustum of a cone larger diameter end diameter, the first sealing cylinder
First annular seal space can be sealed.
Further, the second valve stem seal section includes the second sealing cylinder and second frustum of a cone, the second frustum of a cone major diameter
The second sealing cylinder of end connection, the diameter of the second sealing cylinder are more than the second frustum of a cone larger diameter end diameter, the second sealing cylinder
The second seal chamber can be sealed.
Further, transition cylinder, the diameter of transition cylinder and the are equipped between the second sealing cylinder and second frustum of a cone
Two frustum of a cone larger diameter end diameters are identical.
Further, the first valve stem seal section outboard end to the second valve stem seal section outboard end length is L1, valve on valve rod
Internal oil inlet cavity length is L2, and the second frustum of a cone length in the second valve stem seal section is L3, L1-L2=L3.
Compared with the prior art the utility model has the following advantages：
The utility model is simple in structure, compact, reasonable, can effectively reduce oil cylinder in reversal valve commutation process and fall journey after rise
Degree, avoids the severe vibration in compartment, increases the comfort that user uses.
Description of the drawings
Fig. 1 is the utility model stem structure figure.
Fig. 2 is the utility model valve body structure figure.
Fig. 3 is the utility model oil outlet closed state figure.
Fig. 4 is the utility model oil return opening closed state figure.
Reference sign：1- valve rods, 2- valve bodies, the first valve stem seals of 3- section, the first sealing cylinders of 3.1-, 3.2- first
The frustum of a cone, the second valve stem seals of 4- section, the second sealing cylinders of 4.1-, second frustums of a cone of 4.2-, 4.3- transition cylinder, 5- oil inlets
Mouth, 6- oil outlets, 7- oil return openings, 8- first annular seal spaces, the second seal chambers of 9-, 10- oil suction chambers.
Specific implementation mode
The utility model will be further described in conjunction with the embodiment in attached drawing below：
As shown in Fig. 1 ~ 4, the utility model includes mainly valve rod 1 and valve body 2, and valve rod installation cavity is transversely provided in valve body 2,
Valve rod 1 is set in valve rod installation cavity, and valve rod 1 can horizontally slip in valve rod installation cavity.
2 lower end of valve body is equipped with oil inlet 5, and valve rod installation cavity middle part is oil suction chamber 10, oil suction chamber 10 towards 5 position of oil inlet
It is respectively arranged on the left side and the right side first annular seal space 8 and the second seal chamber 9.Valve rod 1 is equipped with the first valve stem seal section 3 and the second valve rod
Seal section 4, the first valve stem seal section 3 can be sealed with first annular seal space 8 to be coordinated, the second valve stem seal section 4 can with it is second close
Seal the sealing cooperation of chamber 9.
The first valve stem seal section 3 includes the first sealing cylinder 3.1 and first frustum of a cone 3.2, and first frustum of a cone 3.2 is big
Diameter end connects the first sealing cylinder 3.1, and the diameter of the first sealing cylinder 3.1 is more than first frustum of a cone, 3.2 larger diameter end diameter,
First sealing cylinder 3.1 can seal first annular seal space 8.
The second valve stem seal section 4 includes the second sealing cylinder 4.1 and second frustum of a cone 4.2, and second frustum of a cone 4.2 is big
Diameter end connects the second sealing cylinder 4.1, and the diameter of the second sealing cylinder 4.1 is more than second frustum of a cone, 4.2 larger diameter end diameter,
Second sealing cylinder 4.1 can seal the second seal chamber 9.
Between second sealing cylinder, 4.1 and second frustum of a cone 4.2 be equipped with transition cylinder 4.3, transition cylinder 4.3 it is straight
Diameter is identical as second frustum of a cone, 4.2 larger diameter end diameter.
On the valve rod 1 first valve stem seal section, 3 outboard end to 4 outboard end length of the second valve stem seal section be L1, valve body 2
10 length of interior oil suction chamber is L2, and second frustum of a cone, 4.2 length in the second valve stem seal section 4 is L3, as L1-L2=L3, liquid at this time
Press reversal valve commutation states best, oil cylinder falls degree minimum after rise in reversal valve commutation process, avoids the severe vibration in compartment, increases
Add the comfort user experience comfort level that user uses best.
First valve stem seal section, 3 inner end is less than valve body 2 to 4 inner end length of the second valve stem seal section on the valve rod 1
When any one sealing of 10 length of interior oil suction chamber, first annular seal space 8 and the second seal chamber 9, another keeps it turning on.
2 upper end of valve body is equipped with oil outlet 6 and oil return opening 7, and oil outlet 6 is connected to 8 outboard end of first annular seal space, oil return opening 7
It is connected to 9 outboard end of the second seal chamber.
Inner end and outboard end referred to herein is referred to using valve inner center as coordinate, close to valve inner center
It is inner end, is outboard end far from valve inner center.First annular seal space 8, the first valve stem seal section 3 inner end be
Right end in attached drawing, first annular seal space 8,3 outboard end of the first valve stem seal section are left end in attached drawing.Second seal chamber 9, the second valve
4 inner end of bar seal section is left end in attached drawing, and the second seal chamber 9,4 outboard end of the second valve stem seal section are right in attached drawing
End.
The operation principle of the utility model is：When in use, the external hydraulic gear pump of oil inlet, the external hydraulic oil of oil outlet
Cylinder, the external hydraulic oil container of oil return opening.When valve rod is in position, that is, oil inlet shown in Fig. 3 with valve body to be communicated with oil return opening, liquid
Pressure oil is fed directly to by oil inlet in oil return opening, at this time since the oil outlet of hydraulicdirectional control valve is in closed state, hydraulic pressure
The inflow and outflow of hydraulic oil are not will produce in oil cylinder, therefore hydraulic cylinder remains static；When the valve rod of hydraulicdirectional control valve
As shown in Figure 3 shown in position-commutate mode to Fig. 4 when position, since oil inlet and outlet is connected to, and oil return opening is in isolation,
Therefore hydraulic oil is entered along oil inlet in oil outlet, and hydraulic cylinder is pushed to lift upwards.
During valve rod 1 is from the positions Fig. 3 to Fig. 4 position-commutate modes, with the movement of valve rod 1 to the right, the closing of oil outlet
Gradually opened, and at this time if oil return opening does not completely cut off, oil outlet is connected with oil return opening with oil inlet, due to oil return opening
It is directly connected with hydraulic tank, therefore recycle muzzle pressure can be ignored, and oil outlet is with oil cylinder due to connecting, oil outlet pressure
Power is larger, and hydraulic oil under the action of pressure difference in oil outlet can be rapidly flowed into oil return opening so as to cause hydraulic cylinder
Decline, therefore the utility model be based on this principle, if to ensure that oil cylinder does not generate decline in commutation process, in oil outlet
Closing when being opened, oil return opening must be close to completely isolated state, to reach commutation process hydraulic cylinder without under apparent
The state of drop.One be shown with L1 of figure and two sizes of L3, two be shown with size L3 of figure work as L1-L2 by the repeated examinations of practice
When=L3, hydraulicdirectional control valve commutation states are best, and user experience comfort level is best.
Claims (5)
1. a kind of hydraulicdirectional control valve reversing oil circuit structure, including valve rod（1）And valve body（2）, it is characterized in that：Valve body（2）Interior transverse direction
Equipped with valve rod installation cavity, valve rod is set in valve rod installation cavity（1）, valve rod（1）It can horizontally slip in valve rod installation cavity；Valve body
（2）Lower end is equipped with oil inlet（5）, valve rod installation cavity middle part is towards oil inlet（5）Position is oil suction chamber（10）, oil suction chamber（10）It is left
Right both sides are respectively equipped with first annular seal space（8）With the second seal chamber（9）, valve rod（1）It is equipped with the first valve stem seal section（3）With
Two valve stem seal sections（4）, the first valve stem seal section（3）It can be with first annular seal space（8）Sealing cooperation, the second valve stem seal section
（4）It can be with the second seal chamber（9）Sealing cooperation；The valve rod（1）Upper first valve stem seal section（3）Inner end is to the second valve rod
Seal section（4）Inner end length is less than valve body（2）Interior oil suction chamber（10）Length, first annular seal space（8）With the second seal chamber（9）Appoint
When one sealing of meaning, another keeps it turning on；Valve body（2）Upper end is equipped with oil outlet（6）And oil return opening（7）, oil outlet（6）With
One seal chamber（8）Outboard end is connected to, oil return opening（7）With the second seal chamber（9）Outboard end is connected to.
2. hydraulicdirectional control valve reversing oil circuit structure as described in claim 1, it is characterized in that：The first valve stem seal section（3）
Including the first sealing cylinder（3.1）With first frustum of a cone（3.2）, first frustum of a cone（3.2）Larger diameter end connection the first sealing circle
Column（3.1）, the first sealing cylinder（3.1）Diameter be more than first frustum of a cone（3.2）Larger diameter end diameter, the first sealing cylinder
（3.1）First annular seal space can be sealed（8）.
3. hydraulicdirectional control valve reversing oil circuit structure as described in claim 1, it is characterized in that：The second valve stem seal section（4）
Including the second sealing cylinder（4.1）With second frustum of a cone（4.2）, second frustum of a cone（4.2）Larger diameter end connection the second sealing circle
Column（4.1）, the second sealing cylinder（4.1）Diameter be more than second frustum of a cone（4.2）Larger diameter end diameter, the second sealing cylinder
（4.1）The second seal chamber can be sealed（9）.
4. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 3, it is characterized in that：Second sealing cylinder（4.1）
With second frustum of a cone（4.2）Between be equipped with transition cylinder（4.3）, transition cylinder（4.3）Diameter and second frustum of a cone（4.2）Greatly
Diameter end diameter is identical.
5. hydraulicdirectional control valve reversing oil circuit structure as claimed in claim 3, it is characterized in that：The valve rod（1）Upper first valve rod
Seal section（3）Outboard end is to the second valve stem seal section（4）Outboard end length is L1, valve body（2）Interior oil suction chamber（10）Length is L2,
Second valve stem seal section（4）On second frustum of a cone（4.2）Length is L3, L1-L2=L3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927405.5U CN207715460U (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721927405.5U CN207715460U (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
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| Publication Number | Publication Date |
|---|---|
| CN207715460U true CN207715460U (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721927405.5U Active CN207715460U (en) | 2017-12-31 | 2017-12-31 | Hydraulicdirectional control valve reversing oil circuit structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005987A (en) * | 2017-12-31 | 2018-05-08 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
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2017
- 2017-12-31 CN CN201721927405.5U patent/CN207715460U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005987A (en) * | 2017-12-31 | 2018-05-08 | 无锡英特帕普威孚液压有限责任公司 | Hydraulicdirectional control valve reversing oil circuit structure |
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