CN106762898A - A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method - Google Patents
A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method Download PDFInfo
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- CN106762898A CN106762898A CN201611029153.4A CN201611029153A CN106762898A CN 106762898 A CN106762898 A CN 106762898A CN 201611029153 A CN201611029153 A CN 201611029153A CN 106762898 A CN106762898 A CN 106762898A
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- fluid port
- hydraulic fluid
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- pressure
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/08—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
- E01C23/085—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
- E01C23/088—Rotary tools, e.g. milling drums
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/002—Hydraulic systems to change the pump delivery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
Abstract
The present invention a kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method, the mechanism include solenoid directional control valve（1）, the solenoid directional control valve（1）It is 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 present invention a kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method, can switch in high-low pressure.
Description
Technical field
The present invention relates to a kind of structure for being applied on pavement milling machine to enter the hydraulic oil of water pump horizontal high voltage switching and
The high-low pressure water injection system and water spray means 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 the produced dust in operation process of milling machine 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 needs to be equipped with effect of a set of low pressure water injection system to play depositing dust and cooling cutter head in the normal milling process of milling machine；And
And, due to the particularity of large-scale milling machine operation, outer surface is attached with substantial amounts of ash after causing each end of job of milling machine
Dirt and adhesive, in order to preferably be maintained milling machine, being kept the cleaning of the whole machine outward appearance of car, attractive in appearance, general also another need
The water injection system of a set of high pressure is individually equipped with, in case at any time used by 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 sprayed water with low pressure）, the production cost of whole machine is largely improve, also fail to bring more to user
Economical, more excellent product.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided a kind of pavement milling machine that can be switched in high-low pressure
With height hydraulic pressure switching mechanism and water injection system and method, it can select Low-pressure spray cooling or selection high according to the actual requirements
Pressure spray punching cleaning.
The object of the present invention is achieved like this：
A kind of pavement milling machine height hydraulic pressure switching mechanism, the mechanism includes solenoid directional control valve, the solenoid directional control valve
It is three-position four-way electromagnetic directional valve, the hydraulic fluid port one of the solenoid directional control valve is connected to oil inlet, and the hydraulic fluid port two of solenoid directional control valve connects
Oil return opening is connected to, the hydraulic fluid port three of solenoid directional control valve is connected to the second hydraulic fluid port of shuttle valve, electricity after pressure-reducing valve and electric proportional velocity regulating valve
The hydraulic fluid port four of magnetic reversal valve is connected to the 3rd hydraulic fluid port of shuttle valve through one-way throttle valve, and the first hydraulic fluid port of the shuttle valve is connected to fuel-displaced
Mouthful；
When the magnet coil one of solenoid directional control valve obtains electric, hydraulic fluid port one is connected with hydraulic fluid port four, and hydraulic fluid port two is connected with hydraulic fluid port three；
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.
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, the delivery port of water pump complement through water route switching solenoid valve connection
To high-pressure nozzle and low pressure jet pipe.
A kind of pavement milling machine height hydraulic pressure water injection system of the present invention, concatenates between water tank and the water inlet of water pump complement
Have into water stop valve and water filler.
A kind of pavement milling machine height hydraulic pressure water spray means, when needing to carry out Low-pressure spray：Magnet coil two obtains electric,
Hydraulic oil in hydraulic oil container exports the hydraulic oil liquid of constant pressure through constant pressure variable displacement pump, and now hydraulic oil liquid is through solenoid directional control valve
Shuttle valve is input into via electric proportional velocity regulating valve again after into pressure-reducing valve decompression, now the pressure of the second hydraulic fluid port of shuttle valve is more than the 3rd oil
Mouthful pressure so that the second hydraulic fluid port of shuttle valve and the first hydraulic fluid port conducting, therefore decompression after hydraulic oil through the second of shuttle valve
Hydraulic fluid port and the first hydraulic fluid port input water pump complement carry out low-voltage driving, and now the water in water tank drives through water pump complement and sprayed via low pressure
Pipe carries out Low-pressure spray cooling；
When needing to carry out high pressure washing：The magnet coil of magnet coil one and water route switching solenoid valve obtains electric simultaneously so that water
The delivery port of pump assembly is connected with high-pressure nozzle；
Hydraulic oil in hydraulic oil container exports the hydraulic oil liquid of constant pressure through constant pressure variable displacement pump, and hydraulic oil liquid is through one-way throttle valve
Input shuttle valve, now the pressure of the 3rd hydraulic fluid port of shuttle valve more than the second hydraulic fluid port pressure so that the 3rd hydraulic fluid port of shuttle valve and
First hydraulic fluid port is turned on, and now hydraulic oil carries out high drive, water through the 3rd hydraulic fluid port of shuttle valve and the first hydraulic fluid port input water pump complement
Water in case drives through water pump complement and carries out pressure spraying via high-pressure nozzle.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention is to be capable of achieving the function that could realize of two sets of water injection systems, neither shadow the need for routine only with a set of water injection system
Ring two kinds of the normal of water spray demand of milling machine to use, and largely saved production cost, while also reducing hydraulic pressure
Element and the pipeline arrangement of system, improve the maintenance convenience of milling machine；And the setting for passing through constant pressure variable displacement pump so that milling
Optimal injection flow rate can be kept during operation, excessive water spray has both been avoided, milling machine is reduced and is shut down number of water, appearance is unlikely to again
The milling cutter life-span declines phenomenon caused by water spray is insufficient, effectively improves milling performance, extension milling cutter life-span, improves and make
Industry environment；Finally, by the presence of water route switching solenoid valve, the switching behaviour of high-low pressure spraying function is realized on a pipeline
Make, 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 invention.
Fig. 2 is a kind of structural representation of pavement milling machine height hydraulic pressure water injection system of the invention.
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。
Specific embodiment
Referring to Fig. 1 and Fig. 2, a kind of pavement milling machine of the present invention height hydraulic pressure switching mechanism, mechanism's bag
Containing solenoid directional control valve 1, the solenoid directional control valve 1 is three-position four-way electromagnetic directional valve, the 1- of hydraulic fluid port one of the solenoid directional control valve 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 1-3 of hydraulic fluid port three warps of solenoid directional control valve 1
The second hydraulic fluid port 3-2 of shuttle valve 3 is connected to after pressure-reducing valve 6 and electric proportional velocity regulating valve 5, the 1-4 of hydraulic fluid port four of solenoid directional control valve 1 is through unidirectional
Choke 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 1-2 of hydraulic fluid port two with
The 1-3 of hydraulic fluid port three is connected；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,
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 101 through constant pressure variable displacement pump 102,
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, the liquid of water pump complement 4
Extrude hydraulic fluid port T3 and be communicated to hydraulic oil container 101, the water inlet of water pump complement 4 is communicated to water tank 201, the delivery port of water pump complement 4
High-pressure nozzle 205 and low pressure jet pipe 206 are communicated to 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；
A kind of pavement milling machine height hydraulic pressure water spray means：
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 displacement pump
The hydraulic oil liquid of 102 output constant pressures, again via electricity after now hydraulic oil liquid enters the decompression of pressure-reducing valve 6 through solenoid directional control valve 1
Proportional velocity regulating valve 5 is input into shuttle valve 3, now pressure of the pressure of the second hydraulic fluid port 3-2 of shuttle valve 3 more than the 3rd hydraulic fluid port 3-3, so that
Shuttle valve 3 the second hydraulic fluid port 3-2 and the first hydraulic fluid port 3-1 conducting, therefore decompression after hydraulic oil through shuttle valve 3 the second hydraulic fluid port 3-2
Low-voltage driving is carried out with the first hydraulic fluid port 3-1 input water pump complements 4, now the water in water tank 201 is driven via low through water pump complement 4
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 obtains electric simultaneously, makes
The delivery port for obtaining 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 through constant pressure variable displacement pump 102, and hydraulic oil liquid is through unidirectional
Choke valve 2 is input into shuttle valve 3, now pressure of the pressure of the 3rd hydraulic fluid port 3-3 of shuttle valve 3 more than the second hydraulic fluid port 3-2, so that shuttle
Valve 3 the 3rd hydraulic fluid port 3-3 and the first hydraulic fluid port 3-1 conducting, now hydraulic oil through shuttle valve 3 the 3rd hydraulic fluid port 3-3 and the first hydraulic fluid port 3-1
Input water pump complement 4 carries out high drive, and the water in water tank 201 drives through water pump complement 4 and enters horizontal high voltage via high-pressure nozzle 205
Spray punching；
In addition：It should be noted that above-mentioned specific embodiment is only a prioritization scheme of this patent, those skilled in the art
Any change or improvement that member is done according to above-mentioned design, within the protection domain of this patent.
Claims (4)
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）It is 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）It is 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）.
4. a kind of pavement milling machine is realized with height hydraulic pressure water injection system as claimed in claim 2：
When needing to carry out Low-pressure spray：Magnet coil two（Y2）Obtain electric, hydraulic oil container（101）Interior hydraulic oil is through constant-pressure variable
Pump（102）The hydraulic oil liquid of constant pressure is exported, now hydraulic oil liquid is through solenoid directional control valve（1）Into pressure-reducing valve（6）After decompression
Again via electric proportional velocity regulating valve（5）Input shuttle valve（3）, now shuttle valve（3）The second hydraulic fluid port（3-2）Pressure be more than the 3rd hydraulic fluid port
（3-3）Pressure so that shuttle valve（3）The second hydraulic fluid port（3-2）With the first hydraulic fluid port（3-1）Liquid after conducting, therefore decompression
Force feed is through shuttle valve（3）The second hydraulic fluid port（3-2）With the first hydraulic fluid port（3-1）Input water pump complement（4）Low-voltage driving is carried out, now water
Case（201）Interior water is through water pump complement（4）Drive via low pressure jet pipe（206）Carry out Low-pressure spray cooling；
When needing to carry out high pressure washing：Magnet coil one（Y1）With water route switching solenoid valve（204）Magnet coil simultaneously
Electricity so that water pump complement（4）Delivery port and high-pressure nozzle（205）It is connected；
Hydraulic oil container（101）Interior hydraulic oil is through constant pressure variable displacement pump（102）Export the hydraulic oil liquid of constant pressure, hydraulic oil liquid warp
One-way throttle valve（2）Input shuttle valve（3）, now shuttle valve（3）The 3rd hydraulic fluid port（3-3）Pressure be more than the second hydraulic fluid port（3-2）'s
Pressure, so that shuttle valve（3）The 3rd hydraulic fluid port（3-3）With the first hydraulic fluid port（3-1）Conducting, now hydraulic oil is through shuttle valve（3）'s
3rd hydraulic fluid port（3-3）With the first hydraulic fluid port（3-1）Input water pump complement（4）Carry out high drive, water tank（201）Interior water is through water pump
Assembly（4）Drive via high-pressure nozzle（205）Carry out pressure spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029153.4A CN106762898B (en) | 2016-11-22 | 2016-11-22 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029153.4A CN106762898B (en) | 2016-11-22 | 2016-11-22 | A kind of pavement milling machine height hydraulic pressure switching mechanism and water injection system and method |
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| CN106762898A true CN106762898A (en) | 2017-05-31 |
| CN106762898B CN106762898B (en) | 2018-07-10 |
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Cited By (3)
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| CN108302081A (en) * | 2017-12-15 | 2018-07-20 | 纽威数控装备（苏州）有限公司 | A kind of cylinder moving buffering control device |
| CN108729399A (en) * | 2018-05-30 | 2018-11-02 | 扬州盛达特种车有限公司 | A kind of novel washing, which is swept overall height and compressed and washed, to be swept and low pressure dust falling system |
| CN110454447A (en) * | 2019-08-29 | 2019-11-15 | 湘潭市恒欣实业有限公司 | A kind of closed type hydraulic system of accumulator speed regulation |
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| CN108302081A (en) * | 2017-12-15 | 2018-07-20 | 纽威数控装备（苏州）有限公司 | A kind of cylinder moving buffering control device |
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| CN110454447A (en) * | 2019-08-29 | 2019-11-15 | 湘潭市恒欣实业有限公司 | A kind of closed type hydraulic system of accumulator speed regulation |
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| Publication number | Publication date |
|---|---|
| CN106762898B (en) | 2018-07-10 |
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