CN207421013U - A kind of land leveller electric control multi-way valve - Google Patents
A kind of land leveller electric control multi-way valve Download PDFInfo
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- CN207421013U CN207421013U CN201721123336.2U CN201721123336U CN207421013U CN 207421013 U CN207421013 U CN 207421013U CN 201721123336 U CN201721123336 U CN 201721123336U CN 207421013 U CN207421013 U CN 207421013U
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- land leveller
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- main valve
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Abstract
The utility model is related to hydraulic transmission and control technical fields, propose a kind of land leveller electric control multi-way valve, mitigate the working strength of operating personnel so that and land leveller has automatic capability, while improves land leveller operating efficiency and precision, including：Three road DDV (1), three road chip main valves (2) and oil circuit function link up lower housing (11)；Between the housing (10) of three road DDV (1) and three road chip main valves (2), oil circuit function is linked up between lower housing (11) and main valve housing (10) and is fixedly connected.
Description
Technical field
It is that a kind of can be used for that land leveller is High Precision Automatic to be put down the utility model is related to hydraulic transmission and control technical field
The electric control multi-way valve of operation.
Background technology
Land leveller is mainly used for the leveling operation on the road surfaces such as large-scale place or highway.It is first in traditional level land machine operation
It first needs to set up extraneous benchmark, driver adjusts perching knife posture with reference to extraneous benchmark and to complete soil cutting, scraping delivery and leveling makees
Industry.Its perching knife posture must be consistent during the work time with scraping ground reference.
Traditional land leveller multi-way valve is mechanically controlled type multi-way valve, and handle is connected directly on multi-way valve main valve plug.It drives
The change operation handle of the person's of sailing Real Time Observation blade height is come the flow that is assigned in each oil cylinder.Due to the sensation of pilot control
Inaccuracy depends critically upon manipulator personal experience, and it is completed the control model of land leveller multi-way valve and essentially switchs control,
In addition human eye is reacted there are certain delay, although experienced manipulator is constantly more by switching during land leveller
Road valve completes to put down operation, but generally requires that a piece of need to carry out the multiple smooth use that could meet ground will
It asks.So cause labor intensity very big, and the precision on level land and efficiency depend critically upon the warp of land leveller operation driver
It tests.Especially at night, since sight is bad, the difference of leveling effect extremely.
The content of the invention
The purpose of the present invention：It proposes a kind of land leveller electric control multi-way valve, mitigates the working strength of operating personnel so that level land
There is machine automation to put down ability, while improve land leveller operating efficiency and precision.
Technical scheme：
A kind of land leveller electric control multi-way valve, including：
Three road DDV (1), three road chip main valves (2) and oil circuit function link up lower housing (11)；
Between the housing (10) of three road DDV (1) and three road chip main valves (2), oil circuit function links up lower housing (11) and master
Valve chest is fixedly connected between (10).
Main valve housing (10) has been internally integrated the pilot pressure oilhole for leading to end cap both sides and main pump, load pressure oilhole.
It is high-precision slot hole clearance fit between valve core of main valve (8) and main valve housing (10).
Spool screw (5) and limited block (4), spring end cap are clearance fit between (7).
Spool screw (5) is through spring end cap (7), limited block (4) and returns middle spring (6), and then thread connection is in main valve
The right end of spool (8).
LVDT displacement sensors (9) are threaded in main valve housing (10) left end, LVDT displacement sensors (9) inside
Moving component is connected with valve core of main valve (8), is moved with the movement of valve core of main valve (8), end cover lumen and three road DDV (1)
One of pilot pressure delivery outlet is linked up.
Right end cap (3) is threaded in the right end of main valve housing (10), and end cover lumen and three road DDV (1) are another
A pilot pressure chamber is linked up.
Advantages of the present invention：
Electrohydraulic control technology and sensor technology are employed, it, can be fast in the case where introducing attitude of working device sensor
The action of speed, accurately control equipment, completes flow distribution according to need, realizes the collaborative operation of each oil cylinder, reduce perching knife
Shake and it is maximized improve capacity usage ratio, effectively reduce energy consumption.Control system can adjust primary control spool in real time
Displacement adapt to each equipment different loads characteristic, and then can realize that the generalization of chip main valve and normalization design,
Processing cost is effectively reduced, while each main valve can exchange completely, have very strong maintainable and very low maintenance cost.As
When industry system meets emergency situations power down, spring can guarantee that main valve plug moves to centre position in returning, and effectively prevent equipment
Damage and the generation of safe story.The utility model provides solid technology platform for automated job simultaneously.
Description of the drawings：
Fig. 1 is the hydraulic solution technical schematic diagram according to the utility model；
Fig. 2 is the structure diagram of the land leveller electric control multi-way valve；
Label declaration：1、DDV；2nd, chip main valve；3rd, right end cap；4th, limited block；5th, spool screw；6th, spring in returning；7、
Spring end cap；8th, valve core of main valve；9th, LVDT displacement sensors；10th, main valve housing；11st, oil circuit function links up lower housing.
Specific embodiment：
The utility model is described in detail in the following with reference to the drawings and specific embodiments.It is it should be appreciated that described herein
Specific embodiment be only used to explain the utility model, be not used to limit the utility model.
A kind of land leveller electric control multi-way valve as shown in Figure 1, 2, including three road DDV1, three road chip main valves 2 and oil circuit work(
Lower housing 11 can be linked up.Between three road DDV1 and main valve housing 10, oil circuit function is linked up between lower housing 11 and main valve housing 10
It is connected by screw, screw arrangement is highly resistant to the deformation force generated due to load pressure, and main valve housing 10 is avoided to become
The movement of valve core of main valve 8 is not smooth caused by shape.Chip main valve 2 includes main valve housing 10, has been internally integrated and has led to end cap both sides
Pilot pressure oilhole and the pressure oilhole such as main pump, load.It is the long interporal lacuna of high-precision between valve core of main valve 8 and main valve housing 10
Cooperation.It is clearance fit between spool screw 5 and limited block 4, spring end cap 7.Spool screw 5 passes through spring end cap 7, /V
Block 4 and time middle spring 6, then thread connection is in the right end of valve core of main valve 8.Spring 6 has certain compression length in returning, and provides
It is effective to return middle pretightning force.LVDT displacement sensors 9 are threaded in 10 left end of main valve housing, internal moving parts with
Spool is connected, and is moved with the movement of spool, and end cover lumen wherein has a pilot pressure delivery outlet to link up with three road DDV1.
Right end cap 3 is threaded in the right end of main valve housing 10, end cover lumen and another pilot pressure chamber ditch of three road DDV1
It is logical.Oil circuit function links up lower housing 11 and has been internally integrated check valve and overflow valve, is exported containing main pump input pressure and load port
Pressure oil circuit realizes final flow output.
The operation principle of land leveller electric control multi-way valve introduced below：Three road DDV1 receptions come from it is extraneous (controller or
Electric hand handle) electric signal after, both ends port formed flow output, so in two component of LVDT displacement sensors 9 and right end cap
Inner cavity forms certain pressure differential, and valve core of main valve 8 is promoted to be moved to some direction.Spring 6 exists in valve core of main valve compression and back
9 both ends of LVDT displacement sensors generate the signal value output of current location.Limited block is kept off between two spring end caps 7, is avoided
Valve core of main valve moves past range.When the output valve at 9 both ends of LVDT displacement sensors and the positional value of required control
Timing, at this time three road DDV1 input instructions become 0, valve core of main valve 8 keeps present position values constant, ensures when arriving under open front
The flow output of equipment, completes the accurate adjustment to grader posture.The utility model is passed with attitude of working device
Sensor is used in combination, and can efficiently accomplish the work compound that grader controls each oil cylinder, forms land leveller high-accuracy high-efficiency
Operation is put down in automation.
The utility model drives to realize conversion of the electric signal control to hydraulic control by DDV guide, while realizes work(
The amplification of rate level-one.DDV integrate on chip main valve, generate pilot pressure main valve plug two is acted on by enclosure interior
End promotes main valve plug movement.LVDT displacement sensors can monitor valve core of multiway valve position in real time, complete to watch the ratio of main valve plug
Clothes control, the distribution of energy accuracy-control system flow put down operation available for realization high-precision automatic.Wherein limited block can have
The movement travel of effect limitation main valve plug, avoids LVDT sensors overtravel from damaging.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Go out, all any modification, equivalent and improvement done within the spirit and principle of the utility model etc. should all include
Within the scope of protection of the utility model.
Claims (7)
1. a kind of land leveller electric control multi-way valve, which is characterized in that including：
Three road DDV (1), three road chip main valves (2) and oil circuit function link up lower housing (11)；
Between the housing (10) of three road DDV (1) and three road chip main valves (2), oil circuit function links up lower housing (11) and main valve shell
Body is fixedly connected between (10).
2. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
Main valve housing (10) has been internally integrated the pilot pressure oilhole for leading to end cap both sides and main pump, load pressure oilhole.
3. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
It is high-precision slot hole clearance fit between valve core of main valve (8) and main valve housing (10).
4. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
Spool screw (5) and limited block (4), spring end cap are clearance fit between (7).
5. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
Spool screw (5) is through spring end cap (7), limited block (4) and returns middle spring (6), and then thread connection is in valve core of main valve
(8) right end.
6. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
LVDT displacement sensors (9) are threaded in main valve housing (10) left end, LVDT displacement sensors (9) internal motion
Component is connected with valve core of main valve (8), is moved with the movement of valve core of main valve (8), and end cover lumen and three road DDV (1) are wherein
One pilot pressure delivery outlet is linked up.
7. a kind of land leveller electric control multi-way valve as described in claim 1, which is characterized in that
Right end cap (3) is threaded in the right end of main valve housing (10), end cover lumen and three road DDV (1) another elder generation
Lead pressure chamber communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123336.2U CN207421013U (en) | 2017-09-04 | 2017-09-04 | A kind of land leveller electric control multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123336.2U CN207421013U (en) | 2017-09-04 | 2017-09-04 | A kind of land leveller electric control multi-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421013U true CN207421013U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721123336.2U Active CN207421013U (en) | 2017-09-04 | 2017-09-04 | A kind of land leveller electric control multi-way valve |
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| Country | Link |
|---|---|
| CN (1) | CN207421013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396400A (en) * | 2022-01-07 | 2022-04-26 | 中国商用飞机有限责任公司 | Actuator and actuating system |
-
2017
- 2017-09-04 CN CN201721123336.2U patent/CN207421013U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396400A (en) * | 2022-01-07 | 2022-04-26 | 中国商用飞机有限责任公司 | Actuator and actuating system |
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