CN209146012U - Hydraulic control system and snow melting vehicle - Google Patents
Hydraulic control system and snow melting vehicle Download PDFInfo
- Publication number
- CN209146012U CN209146012U CN201821386503.7U CN201821386503U CN209146012U CN 209146012 U CN209146012 U CN 209146012U CN 201821386503 U CN201821386503 U CN 201821386503U CN 209146012 U CN209146012 U CN 209146012U
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- Prior art keywords
- valve
- control system
- hydraulic
- proportional flow
- electric proportional
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Abstract
The utility model relates to a kind of hydraulic control system and snow melting vehicles.Hydraulic control system includes more than two load units and the hydraulic pump for driving the load unit movement, it further include the solenoid valve for being respectively used to control each load unit movement, it is arranged in parallel between the load unit, the hydraulic control system further includes electric proportional flow control valve, the oil inlet of electric proportional flow control valve is connected with the outlet of hydraulic pump, the oil outlet of electric proportional flow control valve is connected with the oil inlet for the solenoid valve for controlling the load unit, the oil return opening of electric proportional flow control valve is connected with fuel tank, the hydraulic control system further includes the control unit being connected with the electromagnet of solenoid valve and electric proportional flow control valve；Snow melting vehicle includes car body and above-mentioned hydraulic control system.This hydraulic control system pipeline is simple, when applying it to snow melting vehicle, reduces production cost while effectively reducing the fever and power loss of snow melting vehicle hydraulic control system.
Description
Technical field
The utility model relates to snow melting vehicle and its control system fields, and in particular to a kind of hydraulic control system and snow melt
Vehicle.
Background technique
The rain and snow weather of north of china in winter is more and the duration is long, after snowing, accumulated snow can be paved on road, in order to clean
Road snow ensures that the coast is clear, snow melting vehicle will have been more and more widely used.The major function movement of existing snow melting vehicle has
The lifting of snow melt cover, suction unit lifting, the rotation of snow melt round brush, the rotation of suction round brush, sewage draining exit opening and closing etc., these movements are all logical
Hydraulic control system is crossed to complete.Snow melt cover and suction unit lifting can be realized operation part and contact or separate with snowfield,
Snow melt and suction round brush rotational energy improve snow melt effect, and snow melting vehicle is in different handling situations to the rotation speed of two kinds of round brush
It is required that inconsistent, the demand that different function respectively loads when acting to flow is also inconsistent.
Currently, being individually to be controlled using more pumps to the treating method of above situation, i.e., it is by individual hydraulic pump
Hydraulic actuator provides pressure oil liquid, and pressure oil liquid is filtered through oil inlet pipe by filter and flows through to hydraulic actuator
In make hydraulic actuator complete corresponding function action, while extra hydraulic oil is also entered into liquid by oil return line
Pressure oil case.But this use pumps the treating method individually controlled more and makes whole system oil circuit more, pipeline is complicated, at
This is higher；When individually being controlled using more pumps simultaneously, some loads need to move at the same time, this just needs to control different loads
It pumps while operating, can system heat generation be increased, system power is caused to lose.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic control systems, to solve the hydraulic control system pipe of snow melting vehicle
The problem of road is complicated and fever is big when system carries out different function movement and power loss；The purpose of this utility model also exists
In providing a kind of snow melting vehicle of application hydraulic control system.
To achieve the above object, the technical solution of hydraulic control system provided by the utility model are as follows: hydraulic control system
It further include being respectively used to control each bear including more than two load units, the hydraulic pump for driving the load unit movement
The solenoid valve of carrier unit movement, is arranged in parallel between the load unit, the hydraulic control system further includes electric proportional flow
Valve, the oil inlet of electric proportional flow control valve are connected with the outlet of hydraulic pump, the oil outlet of electric proportional flow control valve and the control load
The oil inlet of the solenoid valve of unit is connected, and the oil return opening of electric proportional flow control valve is connected with fuel tank, and the hydraulic control system is also wrapped
Include the control unit being connected with the electromagnet of solenoid valve and electric proportional flow control valve.
Hydraulic control system the utility model has the advantages that in snow melting vehicle attonity, the output flow of hydraulic pump is by electric ratio stream
The preferential hydraulic fluid port for measuring valve overcomes very little load so that system unloaded；When the movement of a certain load unit, control unit gives electric ratio
Example one setting electric current of flow valve, entering load unit by the flow of the load port of electric proportional flow control valve, (excess traffic passes through electricity
The preferential hydraulic fluid port off-load of proportional flow control valve), can demand according to different load units to flow, the difference of control orifice opens
Degree.When different loads unit acts, control unit exports different to the size of current of electric proportional flow control valve, reduces system
Fever and unnecessary power loss.
Further, the quantity of hydraulic pump is limited as one.Hydraulic pump is list pump, individually controls load compared to more pumps
Flow has saved cost so that the pipeline of hydraulic control system simplifies.
The technical solution of snow melting vehicle are as follows: snow melting vehicle includes more than two load units, for driving the load unit dynamic
The hydraulic pump of work further includes the solenoid valve for being respectively used to control each load unit movement, is arranged in parallel between the load unit,
The hydraulic control system further includes electric proportional flow control valve, and the oil inlet of electric proportional flow control valve is connected with the outlet of hydraulic pump, electricity
The oil outlet of proportional flow control valve is connected with the oil inlet for the solenoid valve for controlling the load unit, the oil return opening of electric proportional flow control valve
It is connected with fuel tank, the hydraulic control system further includes the control list being connected with the electromagnet of solenoid valve and electric proportional flow control valve
Member.
Snow melting vehicle the utility model has the advantages that flow or revolving speed when the snow melting vehicle can satisfy each workload cell operation in it
Different demands, the fever and power loss of snow melting vehicle can be reduced.
Further, the quantity of hydraulic pump is limited as one.Hydraulic pump is list pump, individually controls load compared to more pumps
Flow, so that the weight of snow melting vehicle itself is also mitigated, has saved snow melting vehicle so that the pipeline of hydraulic control system simplifies
Manufacturing cost.
Further, limiting the load unit includes device for melting snow lifting cylinder and suction unit lifting cylinder, snow melt
Device lifting cylinder is connected to the fuel tank with the rodless cavity of suction unit lifting cylinder.Device for melting snow lifting cylinder and suction dress
The rodless cavity for setting lifting cylinder is connected to hydraulic oil container, declines device for melting snow and suction unit by respective gravity, simultaneously
The rodless cavity of two oil cylinders is all connected to fuel tank, and fuel tank is enabled to carry out repairing into rodless cavity by the pipeline, promotes two dresses
The decline set.
Detailed description of the invention
Fig. 1 is the control principle drawing of snow melting vehicle hydraulic control system provided by the utility model；
Fig. 2 is the hydraulic graphical diagram of electric proportional flow control valve provided by the utility model；
In figure: 1- hydraulic oil container, 2- simply connected gear pump, 3- filter, 4- pressure gauge, 5- main valve group, 6- electricity proportional flow
Valve, the auxiliary valve group of 7-, the right blower motor of 8-, the left blower motor of 9-, 10- aspirate round brush motor, 11- snow melt round brush motor, 12- suction
Device lifting cylinder, 13- device for melting snow lifting cylinder, 14- blowdown apparatus oil cylinder, 15- foul water tank switch oil cylinder, 16- ratio section
Flow valve, 17- pressure-compensated valve.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing, but is not limited thereto.
The specific embodiment of hydraulic control system, as shown in Figure 1, the hydraulic control system includes hydraulic oil container 1, simply connected tooth
Wheel pump 2, filter 3, hydraulic actuator, main oil inlet pipe road, main oil return line and controller, controller can control hydraulic control
Solenoid valve in system opens or closes, and one end of simply connected gear pump 2 is connected to by filter 3 with hydraulic oil container 1, simply connected tooth
The other end of wheel pump 2 is connected with main oil inlet pipe road, and electric proportional flow control valve 6 is parallel between main oil inlet pipe road and main oil return line
(one kind of operated proportional flow control valve).Electric proportional flow control valve 6 is the prior art, if Authorization Notice No. is in CN206592353U
Operated proportional flow control valve disclosed in state's utility model patent, the oil inlet of the operated proportional flow control valve and the oil inlet of hydraulic motor
It is connected, the oil outlet of the operated proportional flow control valve is connected with the oil outlet of hydraulic motor and takes back fuel tank.For another example Authorization Notice No.
Electricity proportional flow control valve disclosed in Chinese utility model patent for CN207526817U, the both ends difference of the electricity proportional flow control valve
It is connected to the oil inlet and fuel tank of hydraulic motor.In the present embodiment, electric proportional flow control valve 6 includes proportional throttle valve 16 and pressure
17 two parts of recuperation valve, as shown in Fig. 2, the electromagnet of electric proportional flow control valve 6 is connected with controller.
Electric proportional flow control valve 6 includes 17 two parts of proportional throttle valve 16 and pressure-compensated valve, and pressure-compensated valve 17 can incite somebody to action
System pressure is compared after system pressure and valve port before the valve port of proportional throttle valve 16, makes system before 16 valve port of proportional throttle valve
A consistent difference is remained after pressure and valve port between system pressure, i.e. pressure in Fig. 2 between T1 mouthfuls and T2 mouthfuls is to fix
Value, which is the spring force on the spool for act on pressure-compensated valve 17.Electric proportional flow control valve 6 has ratio restriction,
The flow formula of ratio restriction are as follows:Wherein, qvIt is the close of fluid for area that flow, A are aperture, ρ
Degree, CdIt is aperture front and back pressure difference for discharge coefficient, Δ P.According to above-mentioned formula it is found that the flow for passing through electric proportional flow control valve 6
Only related with the openings of sizes of ratio restriction, i.e., electric proportional flow control valve 6 passes through the openings of sizes energy of adjusting ratio restriction
Adjust the flow by the electricity proportional flow control valve 6.The oil inlet T1 of proportional throttle valve 16 is connected with the outlet of simply connected gear pump 2,
The oil outlet T2 of proportional throttle valve 16 is connected with the oil inlet of pressure-compensated valve 17.At the oil inlet T1 of proportional throttle valve 16 also
It is bypassed equipped with oil inlet, pressure-compensated valve 17 is provided with corresponding preferential hydraulic fluid port P1, and preferential hydraulic fluid port P1 is connected to hydraulic oil container 1.
The actuator port P2 of pressure-compensated valve 17 is connected with the oil inlet of the solenoid valve of control hydraulic actuator, is additionally provided between
Detect the pressure gauge 4 of pressure.When the hydraulic actuator in system does not work, the output flow of simply connected gear pump 2 is by excellent
First hydraulic fluid port P1, overcomes the load of a very little, makes system unloaded.
Hydraulic actuator in the hydraulic control system includes foul water tank switch oil cylinder 15, blowdown apparatus oil cylinder 14, melts
Avenge device lifting cylinder 13, suction unit lifting cylinder 12, right blower motor 8, left blower motor 9, suction 10 and of round brush motor
Snow melt round brush motor 11.Wherein, right blower motor 8, left blower motor 9, suction round brush motor 10 and snow melt round brush motor 11 are total
With one load unit of composition.Control hydraulic cylinder is parallel with after main oil inlet pipe Lu Yu electricity proportional flow control valve 6 into and out of oily master
Valve group 5, main valve group include controlling foul water tank to switch oil cylinder 15 into and out of oily three-position four-way electromagnetic directional valve, control of sewage disposal device
Oil cylinder 14 into and out of oil three-position four-way electromagnetic directional valve, control suction unit lifting cylinder 12 into and out of oil two-bit triplet electromagnetism
Reversal valve, control device for melting snow lifting cylinder 13 into and out of oily two-bit triplet solenoid directional control valve and control entire motor load list
The two-bit triplet solenoid directional control valve of first oil inlet.In foul water tank switch oil cylinder 15 and control its three-position four-way electromagnetic directional valve acted
Between be equipped with balanced valve locked, blowdown apparatus oil cylinder 14 and control its movement three-position four-way electromagnetic directional valve between according to
Locked by bidirectional hydraulic lock, suction unit lifting cylinder 12 and device for melting snow lifting cylinder 13 respectively with control its movement
It is locked between two-bit triplet solenoid directional control valve by check valve.Right blower motor 8, left blower motor 9, suction round brush motor
10 and snow melt round brush motor 11 form motor load unit by auxiliary valve group 7 control connection, auxiliary valve group 7 include respectively control the right side
Three 3-position 4-way electromagnetism that blower motor 8, left blower motor 9, suction round brush motor 10 and snow melt round brush motor 11 turn to change
To valve.It is connected between the one of two-bit triplet solenoid directional control valve being arranged in main valve group 5 and auxiliary valve group 7 by check valve.With
The upper three-position four-way electromagnetic directional valve all has M type Median Function, three three-position four-way electromagnetic directional valves in auxiliary valve group 7
Actuator port respectively with above-mentioned right blower motor 8, left blower motor 9, suction round brush motor 10 and snow melt round brush motor 11
Oil inlet and outlet connection, these three three-position four-way electromagnetic directional valves in immediately, two neighboring three-position four-way electromagnetic directional valve
Into and out of hydraulic fluid port connection and actuator port is closed.
Right blower motor 8, left blower motor 9, suction round brush motor 10 and snow melt round brush motor 11 be designed with drain tap into
The independent oil return of row.The rodless cavity of suction unit lifting cylinder 12 and device for melting snow lifting cylinder 13 and control suction round brush motor 10
Into and out of oil three-position four-way electromagnetic directional valve oil outlet connection, and finally with the repairing pipeline connection of system.It is above-described
Three-position four-way electromagnetic directional valve, two-bit triplet solenoid directional control valve electromagnet be connected with controller.
The course of work of the hydraulic control system: the output flow of simply connected gear pump 2 enters main valve by filter 3, is
When attonity of uniting, the output flow of simply connected gear pump 2 passes through preferential hydraulic fluid port P1, overcomes a very little to load, makes system unloaded.When being
When having the movement of a certain load unit in system, when needing to open such as foul water tank, electromagnet S1, Y2 are powered, and controller gives electric ratio stream
6 one setting electric current of valve is measured, the rod chamber of foul water tank switch oil cylinder 15 is entered by the ratio restriction of proportional throttle valve 16, makes to live
Stopper rod moves to left, and opens foul water tank, and excess traffic can pass through preferential hydraulic fluid port P1 off-load；When foul water tank needs to close, electromagnet Y1
It is powered, flow enters the rodless cavity of foul water tank switch oil cylinder 15, moves to right piston rod, closes foul water tank.Similarly, pass through electromagnet
The opening and closing for obtaining electrically controllable sewage draining exit of Y3 and Y4, it is electric by obtaining for electromagnet Y6 and Y8, the lifting of device for melting snow is controlled, is passed through
Electromagnet Y7's and Y9 obtains the lifting of electric control suction unit.Passing through electromagnet Y5, Y10, Y12 and Y15 simultaneously must be electric, can control
Right blower motor 8, left blower motor 9, snow melt round brush motor 11 and suction round brush motor 10 turn right simultaneously, by electromagnet Y5,
Y11, Y13 and Y14 simultaneously must be electric, can control right blower motor 8, left blower motor 9, snow melt round brush motor 11 and suction round brush
Motor 10 turns left simultaneously.In the movement of above-mentioned different loads, controller is exported to the size of current difference of electric proportional flow control valve 6,
So that the aperture of the ratio restriction of proportional throttle valve 16 is different, thus to the difference of flow when meeting the work of above-mentioned different loads
Demand.At work, foul water tank switchs oil cylinder 15 and locks by balanced valve system, and blowdown apparatus oil cylinder 14 is locked by bidirectional hydraulic lock
Tightly, device for melting snow lifting cylinder 13 and suction unit lifting cylinder 12 are locked by check valve.Wherein device for melting snow and suction unit
In decline, electromagnet Y8 and Y9 obtain electric, locking check valve opening, so that device for melting snow and suction unit are by under self gravity
It falls, in dropping process, repairing pipeline mends the rodless cavity of device for melting snow lifting cylinder 13 and suction unit lifting cylinder 12
Oil.Right blower motor 8, left blower motor 9, suction round brush motor 10 and snow melt round brush motor 11 from the drain tap being arranged thereon into
The independent oil return of row.
In other embodiments, the quantity of hydraulic pump may be multiple, and multiple hydraulic pumps are by the way of in parallel at this time
Each load is driven simultaneously.
The embodiment of snow melting vehicle: snow melting vehicle includes the hydraulic control system of car body and application on the car body, the hydraulic control
The structure of system processed is identical as the structure of the hydraulic control system in above-described embodiment, and this is no longer going to repeat them.
Claims (5)
1. hydraulic control system is also wrapped including more than two load units, the hydraulic pump for driving the load unit movement
Include the solenoid valve for being respectively used to control each load unit movement, it is characterised in that: it is arranged in parallel between the load unit, it is described
Hydraulic control system further includes electric proportional flow control valve, and the oil inlet of electric proportional flow control valve is connected with the outlet of hydraulic pump, electric ratio
The oil outlet of flow valve is connected with the oil inlet for the solenoid valve for controlling the load unit, the oil return opening and oil of electric proportional flow control valve
Case is connected, and the hydraulic control system further includes the control unit being connected with the electromagnet of solenoid valve and electric proportional flow control valve.
2. hydraulic control system according to claim 1, it is characterised in that: the quantity of the hydraulic pump is one.
3. snow melting vehicle, hydraulic control system including car body and application on the car body, the hydraulic control system include two with
Upper load unit, the hydraulic pump for driving the load unit movement further include being respectively used to control each load unit movement
Solenoid valve, it is characterised in that: be arranged in parallel between the load unit, the hydraulic control system further includes electric proportional flow
Valve, the oil inlet of electric proportional flow control valve are connected with the outlet of hydraulic pump, the oil outlet of electric proportional flow control valve and the control load
The oil inlet of the solenoid valve of unit is connected, and the oil return opening of electric proportional flow control valve is connected with fuel tank, and the hydraulic control system is also wrapped
Include the control unit being connected with the electromagnet of solenoid valve and electric proportional flow control valve.
4. snow melting vehicle according to claim 3, it is characterised in that: the quantity of the hydraulic pump is one.
5. snow melting vehicle according to claim 3, it is characterised in that: the load unit include device for melting snow lifting cylinder and
Suction unit lifting cylinder, device for melting snow lifting cylinder are connected to the fuel tank with the rodless cavity of suction unit lifting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386503.7U CN209146012U (en) | 2018-08-27 | 2018-08-27 | Hydraulic control system and snow melting vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821386503.7U CN209146012U (en) | 2018-08-27 | 2018-08-27 | Hydraulic control system and snow melting vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209146012U true CN209146012U (en) | 2019-07-23 |
Family
ID=67265673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821386503.7U Expired - Fee Related CN209146012U (en) | 2018-08-27 | 2018-08-27 | Hydraulic control system and snow melting vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209146012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
-
2018
- 2018-08-27 CN CN201821386503.7U patent/CN209146012U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110864017A (en) * | 2018-08-27 | 2020-03-06 | 河南森源重工有限公司 | Hydraulic control system and snow melting vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191225 Address after: Changge City, Xuchang City, Henan province 461500 Weiwu Road, No. 16 Co-patentee after: Xuchang Jian'an District Senyuan intelligent sanitation Technology Co.,Ltd. Patentee after: HENAN SENYUAN HEAVY INDUSTRY Co.,Ltd. Address before: Changge City, Xuchang City, Henan province 461500 Weiwu Road, No. 16 Patentee before: HENAN SENYUAN HEAVY INDUSTRY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190723 |