CN106402058A - Valve block assembly of pure electric dump truck hydraulic lifting system - Google Patents
Valve block assembly of pure electric dump truck hydraulic lifting system Download PDFInfo
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- CN106402058A CN106402058A CN201610964334.XA CN201610964334A CN106402058A CN 106402058 A CN106402058 A CN 106402058A CN 201610964334 A CN201610964334 A CN 201610964334A CN 106402058 A CN106402058 A CN 106402058A
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- valve
- hydraulic
- block assembly
- oil
- fluid port
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Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a valve block assembly of a pure electric dump truck hydraulic lifting system, and belongs to the technical field of hydraulic control. The valve block assembly is composed of five one-way valves, an overflow valve, a flow adjusting valve, four electromagnetic reversing valves, two hydraulic control one-way valves, a balance valve and an electromagnetic proportional pressure reducing valve. In addition, an oil port P is an oil inlet, an oil port T and an oil port Y are oil return openings, an oil port T is a main oil return opening, an oil port Y is a control oil return opening, an oil port A is connected with an energy accumulator, an oil port B is connected with a lifting hydraulic cylinder, an oil port C can be connected with a steering gear and a brake, and an MA port is a pressure measuring oil port and connected with a pressure sensor. The valve block is composed of the thread cartridge valves completely, and has the advantages of being small in flowing resistance, simple in structure, strong in oil rub resistance, high in response speed and the like. Meanwhile, the thread cartridge valves are standard elements, the element model selection difficulty in hydraulic system design can be effectively lowered, and the valve block machining difficulty is low. The valve block system is compact in structure, small in size, fully functional and capable of being conveniently arranged on a dump truck.
Description
Technical field
The present invention relates to technical field of hydraulic, particularly relate to a kind of pure Electric dump truck hydraulic lifting system valve block
Assembly.
Background technology
With energy scarcity increasingly sharpen and people's environmental consciousness enhancing, pure electronic oneself through becoming following dump truck
One important directions of development.Because the power requirement of dump truck lifting hydraulic system is higher, traditional dump truck is big
Adopt Engine driven Hydraulic Pump, the hydraulic oil of output certain pressure and flow more, enter lifting hydraulic jack, drive loading space to turn over
Turn, complete the lifting action of dump truck, the power of this kind of method consumption is very big, if being applied to pure electric vehicle, needs to make
Driven with high power motor, the car load working time of pure Electric dump truck can be had a strong impact on, so traditional dump truck
Lifting hydraulic system is not suitable in pure Electric dump truck.A kind of feasible scheme is using float dispensing pump+accumulator
As oil sources, when not lifting, oil pump to accumulator internal-filling liquid, during lifting, from accumulator to lifting hydraulic cylinder fuel feeding.Domestic at present
Producer is not strong due to hydraulic valve development ability, typically adopts the spool-type valves of industrial standard, and traditional side valve type commutation
Valve, due to the limitation of its version, has been difficult in adapt to the requirement of dump truck lifting hydraulic system in many aspects.Screw thread
Inserted valve then possesses the advantage not available for some guiding valves, can optimize the performance of hydraulic system to a certain extent.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of pure Electric dump truck hydraulic lifting system valve block assembly.
This valve block assembly integral installation on support, including check valve one, overflow valve, flow control valve one, electromagnetic switch
Valve one, hydraulic control one-way valve one, solenoid directional control valve two, check valve two, check valve three, balanced valve, check valve four, check valve five, electricity
Magnetic reversal valve three, hydraulic control one-way valve two, solenoid directional control valve four and solenoid-operated proportional pressure-reducing valve；
Wherein, check valve one is located at this valve block assembly back side；Flow control valve one is located at this valve block assembly side, for protecting
The flow restriction passing through from the hydraulic oil of accumulator and hydraulic pump during card lifting work is in working flow；Solenoid directional control valve two,
Check valve three, solenoid directional control valve four, check valve five and solenoid-operated proportional pressure-reducing valve are located at this valve block assembly same side；Fluid-control one-way
Valve one is located at this valve block assembly front；Balanced valve is located at this valve block assembly lower side；Overflow valve, solenoid directional control valve one, unidirectional
Valve two, check valve four, solenoid directional control valve three and hydraulic control one-way valve two are located at this valve block assembly same side；
Solenoid directional control valve two and the unlatching of solenoid directional control valve four control hydraulic control one-way valve one and hydraulic control one-way valve two, thus control
The lifting of container processed and whereabouts；The aperture area of the current control balanced valve of input solenoid-operated proportional pressure-reducing valve, thus control turnover
The flow of lifting hydraulic cylinder, so control lifting hydraulic cylinder stretch out with contraction speed it is ensured that the steady rising of container and whereabouts；
No matter check valve two, check valve three, check valve four and check valve five constitute bridge type return ensure that lifting or whereabouts operating mode, liquid
Force feed is all entered from the entrance of balanced valve, exports out；Solenoid directional control valve three is opened can make dump truck hoisting system realize floating work
Condition, prevents due to road bump, loading space moves up and down and lifting hydraulic cylinder is damaged；Solenoid directional control valve one can achieve accumulator
Off-load, empty fluid.
This valve block assembly includes six hydraulic fluid ports of P, T, Y, A, B, C and a MA mouth, wherein hydraulic fluid port P be oil-in, hydraulic fluid port T and
Hydraulic fluid port Y is oil return opening, oil return opening based on hydraulic fluid port T, and hydraulic fluid port Y is to control oily oil return opening, and hydraulic fluid port A is accumulator, and hydraulic fluid port A connects storage
Can device, hydraulic fluid port B is lifting hydraulic cylinder interface, and hydraulic fluid port B connects lifting hydraulic cylinder, and hydraulic fluid port C is braking in a turn interface, hydraulic fluid port C switch through to
And braking；MA mouth is pressure measurement hydraulic fluid port, connects pressure sensor.
The course of work of this valve block assembly is as follows：
When dump truck is not unloaded, all electromagnet power-off, hydraulic oil is entered by P mouth, through check valve one from hydraulic fluid port A
Enter accumulator, when MA mouth pressure sensor detects accumulator inner fluid pressure and reaches setting value, hydraulic pump drive motor
Quit work, accumulator topping up finishes.
When dump truck lifting unloading, solenoid directional control valve two is energized, and the pressure oil in accumulator is by fluid-control one-way
Valve one is reversely opened, and hydraulic oil enters working oil path, and controller is gradually increased the electric current of input solenoid-operated proportional pressure-reducing valve, makes balance
The aperture area of valve is gradually increased, and pressure oil enters elevating ram, realizes the upset unloading of container.
Reduce when MA mouth pressure sensor detects system pressure, motor automatic, oil pump is oily with accumulator output
Liquid interflow enters elevating ram, shortens the lifting time further.In lifting process, keep stopping if necessary to centre position,
Solenoid directional control valve two power-off can be passed through, close hydraulic control one-way valve one to realize.When closing on lifting terminal, it is gradually reduced input electromagnetism
The electric current of proportional pressure-reducing valve, thus reducing the aperture area of balanced valve, reduces loading space lifting speed, it is to avoid due to inertia reverse drawing liquid
Compressing cylinder.After completing unloading, solenoid directional control valve two power-off, hydraulic control one-way valve one is closed, and solenoid directional control valve four is energized, fluid-control one-way
Valve two is reversely opened, controller be gradually increased input solenoid-operated proportional pressure-reducing valve electric current so that the aperture area of balanced valve by
Cumulative big, thus ensureing container steady fall.When loading space falls close to terminal, it is gradually reduced input solenoid-operated proportional pressure-reducing valve
Electric current, thus reducing the aperture area of balanced valve, reduces loading space falling speed, it is to avoid produce greater impact to vehicle frame.
The having the beneficial effect that of the technique scheme of the present invention：
1st, valve block is all made up of screw-in cartridge valve.Screw-in cartridge valve has that flow resistance is little, structure simple, oil rub resistance energy
The advantages of power is strong, response is fast, and screw-in cartridge valve is standard component, can effectively reduce element choosing in design of Hydraulic System
The difficulty of type, valve block difficulty of processing is little.Valve block system compact conformation, small volume, complete function, convenient cloth on dump truck
Put.
2nd, flow control valve can ensure flow restriction that the hydraulic oil from accumulator and hydraulic pump passes through in working flow.
3rd, pass through to control the opening and closing of two hydraulic control one-way valves, realize lifting and the whereabouts of container, structure is simple, behaviour
Facilitate.
4th, the bridge type return of four check valve compositions ensures that fluid enters balanced valve according to a direction all the time, realizes using one
Individual balanced valve can control loading space lifting and falling speed.
5th, change the aperture area of balanced valve by the electric current of control input solenoid-operated proportional pressure-reducing valve, thus controlling turnover to lift
The flow rising hydraulic cylinder is it is ensured that the steady rising of container and whereabouts.
6th, the unlatching of oil return line electromagnetic direction valve, can make dump truck realize floating operating mode, prevent due to road bump, right
Lifting hydraulic cylinder damages.
7th, it is connected with accumulator oil circuit using electromagnetic direction valve, can easily realize the off-load of accumulator, empty fluid, just
In maintenance.
8th, valve block is reserved and is turned to and braking hydraulic fluid port, can be to turn to and brake circuit fuel feeding simultaneously.
Brief description
Fig. 1 is the hydraulic schematic diagram of the pure Electric dump truck hydraulic lifting system of the present invention；
Fig. 2 is the front view of the valve block assembly assembly of the present invention；
Fig. 3 is the top view of the valve block assembly assembly of the present invention；
Fig. 4 is the left view of the valve block assembly assembly of the present invention；
Fig. 5 is the three dimensional structure diagram one of the hydraulic lifting system valve block assembly of the present invention；
Fig. 6 is the three dimensional structure diagram two of the hydraulic lifting system valve block assembly of the present invention；
Fig. 7 is the three dimensional structure diagram three of the hydraulic lifting system valve block assembly of the present invention；
Fig. 8 is the three dimensional structure diagram four of the hydraulic lifting system valve block assembly of the present invention.
Wherein：1- check valve one；2- overflow valve；3- flow control valve one；4- solenoid directional control valve one；5- hydraulic control one-way valve
One；6- solenoid directional control valve two；7- check valve two；8- check valve three；9- balanced valve；10- check valve four；11- check valve five；12-
Solenoid directional control valve three；13- hydraulic control one-way valve two；14- solenoid directional control valve four；15- solenoid-operated proportional pressure-reducing valve；16- support；P- oil-feed
Mouthful；A- accumulator；B- lifting hydraulic cylinder interface；C- braking in a turn interface；The main oil return opening of T-；Y- controls oily oil return opening；MA-
Pressure measurement hydraulic fluid port.
Specific embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and tool
Body embodiment is described in detail.
The present invention provides a kind of pure Electric dump truck hydraulic lifting system valve block assembly.
As shown in Figure 2, Figure 3 and Figure 4, this valve block assembly integral installation is on support 16, including check valve 1, overflow valve
2nd, flow control valve 1, solenoid directional control valve 1, hydraulic control one-way valve 1, solenoid directional control valve 26, check valve 27, check valve three
8th, balanced valve 9, check valve 4 10, check valve 5 11, solenoid directional control valve 3 12, hydraulic control one-way valve 2 13, solenoid directional control valve 4 14
With solenoid-operated proportional pressure-reducing valve 15；
Wherein, check valve 1 is located at this valve block assembly back side；Flow control valve 1 is located at this valve block assembly side, is used for
Ensure the flow restriction passing through from the hydraulic oil of accumulator and hydraulic pump during lifting work in working flow；Solenoid directional control valve two
6th, check valve 38, solenoid directional control valve 4 14, check valve 5 11 and solenoid-operated proportional pressure-reducing valve 15 are located at this valve block assembly phase homonymy
Face；Hydraulic control one-way valve 1 is located at this valve block assembly front；Balanced valve 9 is located at this valve block assembly lower side；Overflow valve 2, electromagnetism
Reversal valve 1, check valve 27, check valve 4 10, solenoid directional control valve 3 12 and hydraulic control one-way valve 2 13 are located at this valve block assembly phase
Ipsilateral；
Solenoid directional control valve 26 and the unlatching of solenoid directional control valve 4 14 control hydraulic control one-way valve 1 and hydraulic control one-way valve 2 13；
The aperture area of the current control balanced valve 9 of input solenoid-operated proportional pressure-reducing valve 15；Check valve 27, check valve 38, check valve four
10 and check valve 5 11 constitute bridge type return.
This valve block assembly also includes six hydraulic fluid ports of P, T, Y, A, B, C and a MA mouth, and wherein hydraulic fluid port P is oil-in, hydraulic fluid port T
It is oil return opening with hydraulic fluid port Y, oil return opening based on hydraulic fluid port T, hydraulic fluid port Y is to control oily oil return opening, and hydraulic fluid port A is accumulator, and hydraulic fluid port A connects
Accumulator, hydraulic fluid port B is lifting hydraulic cylinder interface, and hydraulic fluid port B connects lifting hydraulic cylinder, and hydraulic fluid port C is braking in a turn interface, and hydraulic fluid port C switches through
To and braking；MA mouth is pressure measurement hydraulic fluid port, connects pressure sensor.
As shown in figure 1, this valve block assembly in the total principle of running is：
In dump truck normal driving process, electromagnetic direction valve 3 12 is opened, and dump truck hoisting system can be made to realize
Floating operating mode, prevents from, due to road bump, lifting hydraulic cylinder being damaged.
When dump truck is not unloaded, all electromagnet power-off, hydraulic oil is entered by P mouth, through check valve 1 from hydraulic fluid port
A enters accumulator, when MA mouth pressure sensor detects accumulator inner fluid pressure and reaches setting value, hydraulic pump drive motor
Quit work, accumulator topping up finishes.
When dump truck lifting unloading, solenoid directional control valve 26 is energized, and the pressure oil in accumulator is by fluid-control one-way
Valve 1 is reversely opened, and hydraulic oil enters working oil path, and controller is gradually increased the electric current of input solenoid-operated proportional pressure-reducing valve 15, makes
The aperture area of balanced valve 9 is gradually increased, and pressure oil enters elevating ram, realizes the upset unloading of container.
Reduce when MA mouth pressure sensor detects system pressure, motor automatic, oil pump is oily with accumulator output
Liquid interflow enters elevating ram, shortens the lifting time further.In lifting process, keep stopping if necessary to centre position,
Solenoid directional control valve 26 power-off can be passed through, close hydraulic control one-way valve 1 to realize.When closing on lifting terminal, it is gradually reduced input electricity
The electric current of magnetic proportional pressure-reducing valve 15, thus reducing the aperture area of balanced valve 9, reduces loading space lifting speed, it is to avoid due to inertia
Reverse drawing hydraulic jack.After completing unloading, solenoid directional control valve 26 power-off, hydraulic control one-way valve 1 is closed, and solenoid directional control valve 4 14 leads to
Electricity, hydraulic control one-way valve 2 13 is reversely opened, and controller is gradually increased the electric current of input solenoid-operated proportional pressure-reducing valve 15, so that balance
The aperture area of valve 9 is gradually increased, thus ensureing container steady fall.When loading space falls close to terminal, it is gradually reduced input
The electric current of solenoid-operated proportional pressure-reducing valve 15, thus reducing the aperture area of balanced valve 9, reduces loading space falling speed, it is to avoid to vehicle frame
Produce greater impact.
Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are the three dimensional structure diagram of this valve block assembly.
The above is the preferred embodiment of the present invention it is noted that for those skilled in the art
For, on the premise of without departing from principle of the present invention, some improvements and modifications can also be made, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of pure Electric dump truck hydraulic lifting system valve block assembly it is characterised in that：Including check valve one (1), overflow
Valve (2), flow control valve one (3), solenoid directional control valve one (4), hydraulic control one-way valve one (5), solenoid directional control valve two (6), check valve
Two (7), check valve three (8), balanced valve (9), check valve four (10), check valve five (11), solenoid directional control valve three (12), hydraulic control list
To valve two (13), solenoid directional control valve four (14) and solenoid-operated proportional pressure-reducing valve (15)；
Wherein, check valve one (1) is located at this valve block assembly back side；Flow control valve one (3) is located at this valve block assembly side, is used for
Ensure the flow restriction passing through from the hydraulic oil of accumulator and hydraulic pump during lifting work in working flow；Solenoid directional control valve two
(6), check valve three (8), solenoid directional control valve four (14), check valve five (11) and solenoid-operated proportional pressure-reducing valve (15) are total positioned at this valve block
Become same side；Hydraulic control one-way valve one (5) is located at this valve block assembly front；Balanced valve (9) is located at this valve block assembly lower side；
Overflow valve (2), solenoid directional control valve one (4), check valve two (7), check valve four (10), solenoid directional control valve three (12) and fluid-control one-way
Valve two (13) is located at this valve block assembly same side；This valve block assembly integral installation is on support (16)；
Solenoid directional control valve two (6) and solenoid directional control valve four (14) control hydraulic control one-way valve one (5) and hydraulic control one-way valve two (13)
Open；The aperture area of the current control balanced valve (9) of input solenoid-operated proportional pressure-reducing valve (15)；Check valve two (7), check valve three
(8), check valve four (10) and check valve five (11) constitute bridge type return.
2. pure Electric dump truck hydraulic lifting system valve block assembly according to claim 1 it is characterised in that：This valve block
Assembly includes six hydraulic fluid ports of P, T, Y, A, B, C and a MA mouth, and wherein hydraulic fluid port P is oil-in, and hydraulic fluid port T and hydraulic fluid port Y is oil return opening,
Oil return opening based on hydraulic fluid port T, hydraulic fluid port Y is to control oily oil return opening, and hydraulic fluid port A is accumulator, and hydraulic fluid port A connects accumulator, and hydraulic fluid port B is to lift
Rise hydraulic cylinder interface, hydraulic fluid port B connects lifting hydraulic cylinder, hydraulic fluid port C is braking in a turn interface, hydraulic fluid port C switches through to and brakes；MA mouth is to survey
Force feed mouth, connects pressure sensor.
3. pure Electric dump truck hydraulic lifting system valve block assembly according to claim 1 it is characterised in that：In self-unloading
When automobile is not unloaded, all electromagnet power-off, hydraulic oil is entered by P mouth, enters accumulator through check valve one (1) from hydraulic fluid port A,
When MA mouth pressure sensor detects accumulator inner fluid pressure and reaches setting value, hydraulic pump drive motor quits work, and stores
Can device topping up finish.
4. pure Electric dump truck hydraulic lifting system valve block assembly according to claim 1 it is characterised in that：Work as self-unloading
During vehicle hoisting unloading, solenoid directional control valve two (6) is energized, and the pressure oil in accumulator is by hydraulic control one-way valve one (5) reversely
Open, hydraulic oil enters working oil path, controller is gradually increased the electric current of input solenoid-operated proportional pressure-reducing valve (15), makes balanced valve
(9) aperture area is gradually increased, and pressure oil enters elevating ram, realizes the upset unloading of container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964334.XA CN106402058B (en) | 2016-10-28 | 2016-10-28 | A kind of pure Electric dump truck hydraulic lifting system valve block assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610964334.XA CN106402058B (en) | 2016-10-28 | 2016-10-28 | A kind of pure Electric dump truck hydraulic lifting system valve block assembly |
Publications (2)
| Publication Number | Publication Date |
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| CN106402058A true CN106402058A (en) | 2017-02-15 |
| CN106402058B CN106402058B (en) | 2017-12-15 |
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ID=58014110
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610964334.XA Active CN106402058B (en) | 2016-10-28 | 2016-10-28 | A kind of pure Electric dump truck hydraulic lifting system valve block assembly |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189730A (en) * | 2017-12-29 | 2018-06-22 | 周依依 | A kind of great tonnage hydraulic tablet self unloading machine |
| CN108302079A (en) * | 2018-04-04 | 2018-07-20 | 徐工集团工程机械股份有限公司科技分公司 | A kind of gearbox dynamic output control system and control method |
| CN108394395A (en) * | 2018-04-23 | 2018-08-14 | 第拖拉机股份有限公司 | A kind of used with tractor brake valve block assembly |
| CN108443250A (en) * | 2018-03-26 | 2018-08-24 | 广东鸿图科技股份有限公司 | A kind of movable type die-casting local pressurizing device with feedback mechanism |
| CN112594235A (en) * | 2020-12-30 | 2021-04-02 | 江苏省无锡探矿机械总厂有限公司 | Two-way speed governing hydraulic pressure valves |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108394395B (en) * | 2018-04-23 | 2024-05-28 | 第一拖拉机股份有限公司 | Brake valve block assembly for tractor |
| CN112594235A (en) * | 2020-12-30 | 2021-04-02 | 江苏省无锡探矿机械总厂有限公司 | Two-way speed governing hydraulic pressure valves |
| CN112594235B (en) * | 2020-12-30 | 2024-06-11 | 江苏省无锡探矿机械总厂有限公司 | Bidirectional speed-regulating hydraulic valve group |
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