CN206636859U - Mini-excavator control valve - Google Patents
Mini-excavator control valve Download PDFInfo
- Publication number
- CN206636859U CN206636859U CN201720329862.8U CN201720329862U CN206636859U CN 206636859 U CN206636859 U CN 206636859U CN 201720329862 U CN201720329862 U CN 201720329862U CN 206636859 U CN206636859 U CN 206636859U
- Authority
- CN
- China
- Prior art keywords
- reversal valve
- valve
- oil inlet
- reversal
- system oil
- 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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- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses a kind of mini-excavator control valve,Including the first system oil inlet,Second system oil inlet,Six three six-way transfer valves,The middle passage flow duct of first reversal valve to the 3rd reversal valve is sequentially connected in series,The first system oil inlet is connected with the middle passage flow duct import of the first reversal valve,Oil inlet of the first system oil inlet also respectively with the first reversal valve to the 3rd reversal valve is connected,The middle passage flow duct of 4th reversal valve to the 6th reversal valve is sequentially connected in series,Second system oil inlet is connected with the middle passage flow duct import of the 6th reversal valve,Oil inlet of the second system oil inlet also respectively with the 4th reversal valve to the 6th reversal valve is connected,The middle passage flow duct outlet of 3rd reversal valve is also connected by oil inlet of the check valve respectively with the 4th reversal valve to the 6th reversal valve,The outlet of the middle passage flow duct of the oil return opening of all reversal valves and the 4th reversal valve is connected with system oil return mouth.The utility model has the advantages of structure is relatively easy, cost is low, and each executing agency has good harmony during composite move, ensure that flexibility and the controllability of excavator, improves operating efficiency.
Description
Technical field
It the utility model is related to a kind of excavator control valve, the particularly control valve for mini-excavator.
Background technology
At present, core parts of the excavator control valve as excavator hydraulic system, control include dozer, quartering hammer,
The hydraulic actuating mechanisms such as steering, swing arm, scraper bowl, dipper, wherein requiring dozer, quartering hammer, turning to single pump work, swing arm, shovel
Bucket, the work of dipper Dual-pump flow-converging；And swing arm, scraper bowl, dipper have the features such as composite move.Existing excavator control valve has two
Kind：For one kind to close central loading sensitive pressure compensation system, one kind leads directly to oil return six-way valve system to open center；Close centring system
It is higher to the configuration requirement of element and expensive, so in 4-6T mini-excavator, use mostly and " open " center " system
System, particularly traditional economy applicability excavator, this system almost used entirely, not only hydraulic unit is more for the system, structure and
Pipeline is considerably complicated, when doing composite move, can influence each other and restrict between each executing agency, as swing arm, dipper, scraper bowl exist
There is sideslip often in action, and collaborates that function is single, the performance that the function of each executing agency can not be optimized, reduces digging
The flexibility of pick machine and controllability, have impact on operating efficiency, add energy consumption.
The content of the invention
The purpose of this utility model is to be directed to deficiencies of the prior art, there is provided a kind of mini-excavator control
Valve, it has the advantages of structure is relatively easy, cost is low, and each executing agency has good harmony during composite move, protects
Flexibility and the controllability of excavator have been demonstrate,proved, operating efficiency has been improved, reduces energy consumption.
To reach above-mentioned purpose, mini-excavator control valve of the present utility model, including the first system oil inlet, the second system
Unite oil inlet, six three six-way transfer valves, it is characterised in that the middle passage flow duct of wherein the first reversal valve to the 3rd reversal valve according to
Secondary series connection, the first system oil inlet are connected with the middle passage flow duct import of the first reversal valve, and the first system oil inlet is also respectively with
The oil inlet of one reversal valve to the 3rd reversal valve is connected, and the middle passage flow duct of the 4th reversal valve to the 6th reversal valve is sequentially connected in series, the
Two system oil inlet is connected with the middle passage flow duct import of the 6th reversal valve, second system oil inlet also respectively with the 4th reversal valve extremely
The oil inlet of 6th reversal valve is connected, the middle passage flow duct of the 3rd reversal valve export also by check valve respectively with the 4th reversal valve extremely
The oil inlet of 6th reversal valve is connected, and the middle passage flow duct outlet of the oil return opening of all reversal valves and the 4th reversal valve is returned with system
Hydraulic fluid port is connected.
For the utility model in use, by the first system oil inlet fuel feeding, operation the first reversal valve to the 3rd reversal valve can
Concurrently or separately work, dozer, quartering hammer, turning function can be completed；Such as the first reversal valve to the 3rd reversal valve is failure to actuate, the
Two system oil inlet also fuel feeding, Dual-pump flow-converging can be achieved, the 4th reversal valve to the 6th reversal valve is operated individually or simultaneously, can control
Swing arm, scraper bowl, dipper individually or composite move；The utility model uses the reversal valve with middle passage flow duct, not only hydraulic unit
Less, pipeline structure is relatively easy, cost is low, improves operating efficiency by Dual-pump flow-converging, reduces energy consumption；
As further improvement of the utility model, the first system oil inlet and second system oil inlet are by each
From relief valve be connected with system oil return mouth；The security of system can be improved；
As further improvement of the utility model, two actuator ports of the 4th reversal valve to the 6th reversal valve with it is respective
It is connected between oil return opening by safety valve；One actuator port of the reversal valve in the first reversal valve to the 3rd reversal valve and its
It is connected between oil return opening by safety valve；When there is work condition abnormality in the executing agency of above-mentioned each reversal valve, can timely pressure release, keep away
Exempt from parts damages；
As further improvement of the utility model, the guiding valves of all reversal valves with respective oil inlet and two actuator ports
Corresponding axle journal both sides are equipped with throttling channel, wherein the 4th reversal valve is to the guiding valve of the 6th reversal valve, its oil inlet corresponds to axle journal two
The throttling channel area of passage of side is more than the throttling channel area of passage that its two actuator port corresponds to axle journal both sides；Throttling channel can improve cunning
Smoothness of the valve when different station is changed, improve fretting performance；The guiding valve of the 4th reversal valve to the 6th reversal valve may be used also simultaneously
Ensure the uniformity of oil pressure in each valve during different station so that each executing agency has good harmony during composite move, protects
Flexibility and the controllability of excavator are demonstrate,proved；
In summary, the utility model has the advantages of structure is relatively easy, cost is low, and machine is respectively performed during composite move
Structure has good harmony, ensure that flexibility and the controllability of excavator, improves operating efficiency, reduce energy consumption.
Brief description of the drawings
Fig. 1 is the front view of the utility model embodiment.
Fig. 2 is Fig. 1 left view.
Fig. 3 is Fig. 1 K direction views.
Fig. 4 is the hydraulic schematic diagram of the utility model embodiment.
Fig. 5 is the sectional view of the first reversal valve to the 3rd reversal valve in Fig. 1.
Fig. 6 is the sectional view of the 4th reversal valve to the 6th reversal valve in Fig. 1.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 6, the mini-excavator control valve of the embodiment, including the first system oil inlet 1（P1）,
Two system oil inlet 8 (P2), six three six-way transfer valves 2 to 7, two connected system oil return mouths 9（T1）With 10（T2）, its
On the first oil inlet and oil return valve block 11, second system oil inlet 8 and system are returned for middle the first system oil inlet 1 and system oil return mouth 9
Hydraulic fluid port 10 on the second oil inlet and oil return valve block 12, the first reversal valve 2, the second reversal valve 3, the 3rd reversal valve 4 middle passage flow duct according to
Secondary series connection, the first system oil inlet 1 are connected with the middle passage flow duct import of the first reversal valve 2, the first system oil inlet 1 also respectively with
First reversal valve 2, the second reversal valve 3, the oil inlet of the 3rd reversal valve 4 are connected, the 4th reversal valve 5, the 5th reversal valve the 6, the 6th
The middle passage flow duct of reversal valve 7 is sequentially connected in series, and interflow valve block 13, all valve blocks are provided between the 3rd reversal valve 4 and the 4th reversal valve 5
And reversal valve is connected by bolt；Second system oil inlet 8 is connected with the middle passage flow duct import of the 6th reversal valve 7, second system
Oil inlet of the oil inlet 8 also respectively with the 4th reversal valve 5, the 5th reversal valve 6, the 6th reversal valve 7 is connected, the 3rd reversal valve 4
The outlet of middle passage flow duct also by check valve 14 respectively with the 4th reversal valve 5, the 5th reversal valve 6, the 6th reversal valve 7 oil inlet phase
Even, the middle passage flow duct of the oil return opening of all reversal valves and the 4th reversal valve 5 outlet is connected with system oil return mouth 9,10；First system
System oil inlet 1 and second system oil inlet 8 are connected by respective relief valve 15 or 16 with system oil return mouth 9,10；4th changes
Pass through safety valve 17,18 between valve 5, the 5th reversal valve 6, two actuator ports of the 6th reversal valve 7 and respective oil return opening
It is connected；It is connected between one actuator port of the second reversal valve 3 and its oil return opening by safety valve 19；First reversal valve 2, second are changed
To the guiding valve 20 of valve 3, the 3rd reversal valve 4 flow-passing surface is equipped with axle journal both sides corresponding with respective oil inlet and two actuator ports
Product identical throttling channel 21, the 4th reversal valve 5, the 5th reversal valve 6, the 6th reversal valve 7 guiding valve 22 with respective oil inlet and
Axle journal both sides are equipped with throttling channel corresponding to two actuator ports, and its oil inlet corresponds to the area of passage of the throttling channel 23 of axle journal both sides
More than the area of passage for the throttling channel 24 that its two actuator port corresponds to axle journal both sides；
The utility model is in use, the first reversal valve 2, the second reversal valve 3, the two actuator ports difference of the 3rd reversal valve 4
It is connected with performing dozer, quartering hammer, the Hydraulic Elements that turn to, the 4th reversal valve 5, the 5th reversal valve 6, the 6th reversal valve 7
Hydraulic Elements of two actuator ports respectively with execution swing arm, scraper bowl, dipper are connected；
During work：
1）By single oil pump feed, pass through the fuel feeding of the first system oil inlet 1, the first reversal valve 2 of operation, the second reversal valve the 3, the 3rd
Reversal valve 4 concurrently or separately works, and can complete dozer, quartering hammer, turning function；
2）By double pump fuel feeding, the first reversal valve 2, the second reversal valve 3, the 3rd reversal valve 4 are failure to actuate, the first system oil inlet
1 hydraulic oil being passed through pushes check valve 14 open, can realize Dual-pump flow-converging with second system oil inlet 8, be operated individually or simultaneously the 4th
Reversal valve 5, the 5th reversal valve 6, the 6th reversal valve 7, controllable brake arm, scraper bowl, dipper individually or composite move；Each throttling channel 21
Or 23,24 can improve smoothness of the guiding valve when different station is changed, fretting performance is improved；
The utility model uses six reversal valves with middle passage flow duct, and not only hydraulic unit is few, pipeline structure is relatively simple
List, cost are low, improve operating efficiency by Dual-pump flow-converging, reduce energy consumption；Guiding valve 22 is due to the excessively stream of throttling channel 23 simultaneously
Area be more than throttling channel 24 area of passage, it is also ensured that during different station in each valve oil pressure uniformity so that composite move
When each executing agency there is good harmony, ensure that flexibility and the controllability of excavator.
Claims (4)
1. a kind of mini-excavator control valve, including the first system oil inlet, second system oil inlet, six three six logical commutations
Valve, it is characterised in that the middle passage flow duct of wherein the first reversal valve to the 3rd reversal valve is sequentially connected in series, the first system oil inlet and
The middle passage flow duct import of one reversal valve is connected, the also oil-feed with the first reversal valve to the 3rd reversal valve respectively of the first system oil inlet
Mouthful it is connected, the middle passage flow duct of the 4th reversal valve to the 6th reversal valve is sequentially connected in series, second system oil inlet and the 6th reversal valve
Middle passage flow duct import is connected, and oil inlet of the second system oil inlet also respectively with the 4th reversal valve to the 6th reversal valve is connected, the
The middle passage flow duct outlet of three reversal valves is also connected by oil inlet of the check valve respectively with the 4th reversal valve to the 6th reversal valve, institute
The middle passage flow duct outlet for having the oil return opening and the 4th reversal valve of reversal valve is connected with system oil return mouth.
2. mini-excavator control valve as claimed in claim 1, it is characterised in that the first system oil inlet and the second system
System oil inlet is connected by respective relief valve with system oil return mouth.
3. mini-excavator control valve as claimed in claim 1 or 2, it is characterised in that the 4th reversal valve to the 6th reversal valve
It is connected between two actuator ports and respective oil return opening by safety valve；A commutation in first reversal valve to the 3rd reversal valve
It is connected between one actuator port of valve and its oil return opening by safety valve.
4. mini-excavator control valve as claimed in claim 1 or 2, it is characterised in that the guiding valve of all reversal valves with it is respective
Axle journal both sides corresponding to oil inlet and two actuator ports are equipped with throttling channel, wherein the guiding valve of the 4th reversal valve to the 6th reversal valve
The throttling channel area of passage that its oil inlet corresponds to axle journal both sides is more than the throttling channel excessively stream that its two actuator port corresponds to axle journal both sides
Area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329862.8U CN206636859U (en) | 2017-03-31 | 2017-03-31 | Mini-excavator control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720329862.8U CN206636859U (en) | 2017-03-31 | 2017-03-31 | Mini-excavator control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206636859U true CN206636859U (en) | 2017-11-14 |
Family
ID=60259696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720329862.8U Expired - Fee Related CN206636859U (en) | 2017-03-31 | 2017-03-31 | Mini-excavator control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206636859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340101A (en) * | 2018-12-04 | 2019-02-15 | 力源液压（苏州）有限公司 | A kind of close circuit variable pump control valve |
-
2017
- 2017-03-31 CN CN201720329862.8U patent/CN206636859U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340101A (en) * | 2018-12-04 | 2019-02-15 | 力源液压（苏州）有限公司 | A kind of close circuit variable pump control valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171114 Termination date: 20200331 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |