CN206397843U - A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system - Google Patents
A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system Download PDFInfo
- Publication number
- CN206397843U CN206397843U CN201621250843.8U CN201621250843U CN206397843U CN 206397843 U CN206397843 U CN 206397843U CN 201621250843 U CN201621250843 U CN 201621250843U CN 206397843 U CN206397843 U CN 206397843U
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- fluid port
- hydraulic fluid
- valve
- directional control
- solenoid directional
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Abstract
The utility model a kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system, the mechanism include solenoid directional control valve（1）, the solenoid directional control valve（1）For three-position four-way electromagnetic directional valve, the solenoid directional control valve（1）Hydraulic fluid port one（1‑1）It is connected to oil inlet（P）, solenoid directional control valve（1）Hydraulic fluid port two（1‑2）It is connected to oil return opening（T1）, solenoid directional control valve（1）Hydraulic fluid port three（1‑3）Through pressure-reducing valve（6）With electric proportional velocity regulating valve（5）After be connected to shuttle valve（3）The second hydraulic fluid port（3‑2）, solenoid directional control valve（1）Hydraulic fluid port four（1‑4）Through one-way throttle valve（2）It is connected to shuttle valve（3）The 3rd hydraulic fluid port（3‑3）, the shuttle valve（3）The first hydraulic fluid port（3‑1）It is connected to oil-out（A）.The utility model a kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system, can be switched in high-low pressure.
Description
Technical field
The utility model be related to it is a kind of applied to the hydraulic oil of water pump is entered on pavement milling machine horizontal high voltage switching structure,
And the high-low pressure water injection system being made using the structure, belong to field of road engineering machinery apparatus field.
Background technology
At present, the rotary cutting process of the actual layer that exactly satisfied the need using milling cutter of the operation process of pavement milling machine；In cutting
During milling cutter temperature certainly will be caused to raise and accelerate the abrasion of milling cutter, while the high speed for being cut the waste material that gets off in milling cutter is revolved
Turn that under cutting substantial amounts of dust can be produced.
Effectively reduce cutter of milling-planing machine abrasion and reduce because milling machine dust produced in operation process is to improve
The milling machine milling cutter life-span simultaneously improves operating efficiency, improves the key of milling machine manipulator and less important work person works' environment, because
This effect for needing to be equipped with a set of low pressure water injection system in the normal milling process of milling machine to play depositing dust and cool down cutter head；And
And, due to the particularity of large-scale milling machine operation, cause outer surface after each end of job of milling machine to be attached with substantial amounts of ash
Dirt and adhesive are general also separately to need in order to preferably be maintained milling machine, kept the cleaning of car complete machine outward appearance, attractive in appearance
The water injection system of a set of high pressure is individually equipped with, in case at any time used in cleaning vehicle body.
Therefore, traditional large-scale milling machine is both needed to be equipped with two sets of independent water spray systems to meet normal job requirements
System（Spray water with high pressure and low pressure water spray）, the production cost of complete machine is largely improved, also fails to bring more to user
Economical, more excellent product.
The content of the invention
The purpose of this utility model is to overcome that above-mentioned not enough there is provided a kind of road surface milling that can be switched in high-low pressure
Planer height hydraulic pressure switching mechanism and water injection system, it can select Low-pressure spray cooling or selection high pressure according to the actual requirements
Spray punching cleaning.
What the purpose of this utility model was realized in：
A kind of pavement milling machine height hydraulic pressure switching mechanism, the mechanism includes solenoid directional control valve, and the electromagnetism is changed
It is three-position four-way electromagnetic directional valve to valve, the hydraulic fluid port one of the solenoid directional control valve is connected to oil inlet, the hydraulic fluid port of solenoid directional control valve
Two are connected to oil return opening, and the hydraulic fluid port three of solenoid directional control valve is connected to the second oil of shuttle valve after pressure-reducing valve and electric proportional velocity regulating valve
Mouthful, the hydraulic fluid port four of solenoid directional control valve is connected to the 3rd hydraulic fluid port of shuttle valve, the first hydraulic fluid port connection of the shuttle valve through one-way throttle valve
To oil-out；
When the magnet coil one of solenoid directional control valve obtains electric, hydraulic fluid port one is connected with hydraulic fluid port four, hydraulic fluid port two and hydraulic fluid port three-phase
Connection；When the magnet coil two of solenoid directional control valve obtains electric, hydraulic fluid port one is connected with hydraulic fluid port three, and hydraulic fluid port two is connected with hydraulic fluid port four
It is logical.
A kind of pavement milling machine height hydraulic pressure water injection system, oil inlet is communicated to hydraulic oil container through constant pressure variable displacement pump, returns
Hydraulic fluid port is communicated to hydraulic oil container, and oil-out is communicated to the hydraulic pressure oil inlet of water pump complement, the hydraulic pressure oil-out connection of water pump complement
To hydraulic oil container, the water inlet of water pump complement is communicated to water tank, connection of the delivery port through water route switching solenoid valve of water pump complement
To high-pressure nozzle and low pressure jet pipe.
A kind of pavement milling machine of the utility model height hydraulic pressure water injection system, between water tank and the water inlet of water pump complement
It is serially connected with into water stop valve and water filler.
Compared with prior art, the beneficial effects of the utility model are：
The work(that two sets of water injection systems could be realized the need for the utility model is only achievable routine with a set of water injection system
Can, neither influence two kinds of the normal of water spray demand of milling machine to use, and production cost has largely been saved, while also subtracting
Lack the element and pipeline arrangement of hydraulic system, improve the maintenance convenience of milling machine；And by the setting of constant pressure variable displacement pump,
Enable the injection flow rate for keeping optimal during milling and plane operation, both avoided excessive water spray, reduce milling machine and shut down number of water, and not
As for occur water spray it is insufficient caused by the milling cutter life-span decline phenomenon, effectively improve milling performance, extension the milling cutter longevity
Life, improvement operating environment；Finally, by the presence of water route switching solenoid valve, high-low pressure spraying function is realized on a pipeline
Handover operation, it is easy to use, quick.
Brief description of the drawings
Fig. 1 is a kind of structural representation of pavement milling machine height hydraulic pressure switching mechanism of the utility model.
Fig. 2 is a kind of structural representation of pavement milling machine height hydraulic pressure water injection system of the utility model.
Wherein：
Solenoid directional control valve 1, one-way throttle valve 2, shuttle valve 3, water pump complement 4, electric proportional velocity regulating valve 5, pressure-reducing valve 6, hydraulic oil
Pipe 7；
Hydraulic oil container 101, constant pressure variable displacement pump 102；
Water tank 201, water inlet stop valve 202, water filler 203, water route switching solenoid valve 204, high-pressure nozzle 205, low pressure
Jet pipe 206.
Embodiment
Referring to Fig. 1 and Fig. 2, a kind of pavement milling machine height hydraulic pressure switching mechanism that the utility model is related to, the machine
Structure includes solenoid directional control valve 1, and the solenoid directional control valve 1 is three-position four-way electromagnetic directional valve, the hydraulic fluid port of the solenoid directional control valve 1
One 1-1 is connected to oil inlet P, and the 1-2 of hydraulic fluid port two of solenoid directional control valve 1 is connected to oil return inlet T 1, the 1- of hydraulic fluid port three of solenoid directional control valve 1
3 are connected to the second hydraulic fluid port 3-2 of shuttle valve 3, the 1-4 of hydraulic fluid port four warps of solenoid directional control valve 1 after pressure-reducing valve 6 and electric proportional velocity regulating valve 5
One-way throttle valve 2 is connected to the 3rd hydraulic fluid port 3-3 of shuttle valve 3, and the first hydraulic fluid port 3-1 of the shuttle valve 3 is connected to oil-out A；
When the Y1 of magnet coil one of solenoid directional control valve 1 obtains electric, the 1-1 of hydraulic fluid port one is connected with the 1-4 of hydraulic fluid port four, the 1- of hydraulic fluid port two
2 are connected with the 1-3 of hydraulic fluid port three；When the Y2 of magnet coil two of solenoid directional control valve 1 obtains electric, the 1-1 of hydraulic fluid port one is connected with the 1-3 of hydraulic fluid port three
Logical, the 1-2 of hydraulic fluid port two is connected with the 1-4 of hydraulic fluid port four；
A kind of pavement milling machine height hydraulic pressure water injection system, oil inlet P is communicated to hydraulic oil container through constant pressure variable displacement pump 102
101, oil return inlet T 1 is communicated to hydraulic oil container 101, and oil-out A is communicated to the hydraulic pressure oil inlet P 1 of water pump complement 4, water pump complement 4
Hydraulic pressure oil-out T3 be communicated to hydraulic oil container 101, the water inlet of water pump complement 4 is communicated to water tank 201, and water pump complement 4 goes out
The mouth of a river is communicated to high-pressure nozzle 205 and low pressure jet pipe 206 through water route switching solenoid valve 204；
Further, it is serially connected between the water inlet of water tank 201 and water pump complement 4 into water stop valve 202 and water filler
203；
Operation principle of the present utility model is：
When needing to carry out Low-pressure spray：The Y2 of magnet coil two obtains electric, and the hydraulic oil in hydraulic oil container 101 is through constant-pressure variable
Pump 102 export constant pressure hydraulic oil liquid, now hydraulic oil liquid through solenoid directional control valve 1 enter pressure-reducing valve 6 depressurize after again via
Electric proportional velocity regulating valve 5 inputs shuttle valve 3, and now the second hydraulic fluid port 3-2 of shuttle valve 3 pressure is more than the 3rd hydraulic fluid port 3-3 pressure, so that
So that the second hydraulic fluid port 3-2 and the first hydraulic fluid port 3-1 conducting of shuttle valve 3, therefore second hydraulic fluid port 3- of the hydraulic oil through shuttle valve 3 after decompression
2 and first hydraulic fluid port 3-1 input water pump complement 4 carry out low-voltage driving, now the water in water tank 201 through water pump complement 4 drive via
Low pressure jet pipe 206 carries out Low-pressure spray cooling；
When needing to carry out high pressure washing：The magnet coil of the Y1 of magnet coil one and water route switching solenoid valve 204 is obtained simultaneously
Electricity so that the delivery port of water pump complement 4 is connected with high-pressure nozzle 205；
Hydraulic oil in hydraulic oil container 101 exports the hydraulic oil liquid of constant pressure, hydraulic oil liquid warp through constant pressure variable displacement pump 102
One-way throttle valve 2 inputs shuttle valve 3, and now the 3rd hydraulic fluid port 3-3 of shuttle valve 3 pressure is more than the second hydraulic fluid port 3-2 pressure, so that
The 3rd hydraulic fluid port 3-3 and the first hydraulic fluid port 3-1 conducting of shuttle valve 3 are obtained, now hydraulic oil is through the oil of the 3rd hydraulic fluid port 3-3 of shuttle valve 3 and first
The water that mouth 3-1 input water pump complements 4 are carried out in high drive, water tank 201 drives to enter via high-pressure nozzle 205 through water pump complement 4
Horizontal high voltage spray punching；
In addition：It should be noted that above-mentioned embodiment is only a prioritization scheme of this patent, the skill of this area
Any change or improvement that art personnel are done according to above-mentioned design, within the protection domain of this patent.
Claims (3)
1. a kind of pavement milling machine height hydraulic pressure switching mechanism, it is characterised in that：The mechanism includes solenoid directional control valve
（1）, the solenoid directional control valve（1）For three-position four-way electromagnetic directional valve, the solenoid directional control valve（1）Hydraulic fluid port one（1-1）Connection
To oil inlet（P）, solenoid directional control valve（1）Hydraulic fluid port two（1-2）It is connected to oil return opening（T1）, solenoid directional control valve（1）Hydraulic fluid port three
（1-3）Through pressure-reducing valve（6）With electric proportional velocity regulating valve（5）After be connected to shuttle valve（3）The second hydraulic fluid port（3-2）, solenoid directional control valve（1）
Hydraulic fluid port four（1-4）Through one-way throttle valve（2）It is connected to shuttle valve（3）The 3rd hydraulic fluid port（3-3）, the shuttle valve（3）First oil
Mouthful（3-1）It is connected to oil-out（A）；
Work as solenoid directional control valve（1）Magnet coil one（Y1）When obtaining electric, hydraulic fluid port one（1-1）With hydraulic fluid port four（1-4）It is connected, hydraulic fluid port
Two（1-2）With hydraulic fluid port three（1-3）It is connected；Work as solenoid directional control valve（1）Magnet coil two（Y2）When obtaining electric, hydraulic fluid port one（1-1）
With hydraulic fluid port three（1-3）It is connected, hydraulic fluid port two（1-2）With hydraulic fluid port four（1-4）It is connected.
2. a kind of pavement milling machine height hydraulic pressure water injection system, it is characterised in that：The system includes a kind of road-surface milling
Machine height hydraulic pressure switching mechanism, the mechanism includes solenoid directional control valve（1）, the solenoid directional control valve（1）For 3-position 4-way
Solenoid directional control valve, the solenoid directional control valve（1）Hydraulic fluid port one（1-1）It is connected to oil inlet（P）, solenoid directional control valve（1）Hydraulic fluid port
Two（1-2）It is connected to oil return opening（T1）, solenoid directional control valve（1）Hydraulic fluid port three（1-3）Through pressure-reducing valve（6）With electric proportional velocity regulating valve
（5）After be connected to shuttle valve（3）The second hydraulic fluid port（3-2）, solenoid directional control valve（1）Hydraulic fluid port four（1-4）Through one-way throttle valve（2）Even
It is connected to shuttle valve（3）The 3rd hydraulic fluid port（3-3）, the shuttle valve（3）The first hydraulic fluid port（3-1）It is connected to oil-out（A）；
Work as solenoid directional control valve（1）Magnet coil one（Y1）When obtaining electric, hydraulic fluid port one（1-1）With hydraulic fluid port four（1-4）It is connected, hydraulic fluid port
Two（1-2）With hydraulic fluid port three（1-3）It is connected；Work as solenoid directional control valve（1）Magnet coil two（Y2）When obtaining electric, hydraulic fluid port one（1-1）
With hydraulic fluid port three（1-3）It is connected, hydraulic fluid port two（1-2）With hydraulic fluid port four（1-4）It is connected；
Oil inlet（P）Through constant pressure variable displacement pump（102）It is communicated to hydraulic oil container（101）, oil return opening（T1）It is communicated to hydraulic oil container
（101）, oil-out（A）It is communicated to water pump complement（4）Hydraulic pressure oil inlet（P1）, water pump complement（4）Hydraulic pressure oil-out（T3）
It is communicated to hydraulic oil container（101）, water pump complement（4）Water inlet be communicated to water tank（201）, water pump complement（4）Delivery port warp
Water route switching solenoid valve（204）Be communicated to high-pressure nozzle（205）With low pressure jet pipe（206）.
3. a kind of pavement milling machine height hydraulic pressure water injection system as claimed in claim 2, it is characterised in that：Water tank（201）With
Water pump complement（4）Water inlet between be serially connected with into water stop valve（202）And water filler（203）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250843.8U CN206397843U (en) | 2016-11-22 | 2016-11-22 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621250843.8U CN206397843U (en) | 2016-11-22 | 2016-11-22 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206397843U true CN206397843U (en) | 2017-08-11 |
Family
ID=59508903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621250843.8U Expired - Fee Related CN206397843U (en) | 2016-11-22 | 2016-11-22 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206397843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762898A (en) * | 2016-11-22 | 2017-05-31 | 柳工无锡路面机械有限公司 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method |
-
2016
- 2016-11-22 CN CN201621250843.8U patent/CN206397843U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762898A (en) * | 2016-11-22 | 2017-05-31 | 柳工无锡路面机械有限公司 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method |
| CN106762898B (en) * | 2016-11-22 | 2018-07-10 | 柳工无锡路面机械有限公司 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method |
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| 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: 20170811 Termination date: 20201122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |