CN106402058B - A kind of pure Electric dump truck hydraulic lifting system valve block assembly - Google Patents
A kind of pure Electric dump truck hydraulic lifting system valve block assembly Download PDFInfo
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- CN106402058B CN106402058B CN201610964334.XA CN201610964334A CN106402058B CN 106402058 B CN106402058 B CN 106402058B CN 201610964334 A CN201610964334 A CN 201610964334A CN 106402058 B CN106402058 B CN 106402058B
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- valve
- hydraulic
- fluid port
- hydraulic fluid
- block assembly
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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
- 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 present invention provides a kind of pure Electric dump truck hydraulic lifting system valve block assembly, belongs to technical field of hydraulic.The valve block assembly by five check valves, overflow valve, flow control valve, four solenoid directional control valves, two hydraulic control one-way valves, balanced valve and solenoid-operated proportional reducer unit into, in addition, hydraulic fluid port P is oil inlet, hydraulic fluid port T and hydraulic fluid port Y is oil return opening, hydraulic fluid port T is main oil return opening, and for hydraulic fluid port Y to control oily oil return opening, hydraulic fluid port A connects accumulator, hydraulic fluid port B connects lifting hydraulic cylinder, and hydraulic fluid port C can switch through to and brake.MA mouths are pressure measurement hydraulic fluid port, connect pressure sensor.The valve block is all made up of screw-in cartridge valve, have the advantages that flow resistance is small, simple in construction, oil rub resistance ability is strong, response is fast, and screw-in cartridge valve is standard component, the difficulty of the Component selection in design of Hydraulic System can be effectively reduced, valve block difficulty of processing is small.Valve block system is compact-sized, small volume, complete function, convenient to be arranged on dump truck.
Description
Technical field
The present invention relates to technical field of hydraulic, particularly relates to a kind of pure Electric dump truck hydraulic lifting system valve block
Assembly.
Background technology
With the enhancing to increasingly sharpen with people's environmental consciousness of energy scarcity, oneself pure electronic warp turns into 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
It is use Engine driven Hydraulic Pump more, the hydraulic oil of certain pressure and flow is exported, into lifting hydraulic jack, driving loading space turns 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, it is necessary to make
Driven with high power motor, the vehicle working time of pure Electric dump truck can be had a strong impact on, so traditional dump truck
Lifting hydraulic system is not suitable for in pure Electric dump truck.A kind of feasible scheme is to use float dispensing pump+accumulator
As oil sources, when not lifting, oil pump is to accumulator internal-filling liquid, during lifting, from accumulator to lifting hydraulic cylinder fuel feeding.It is domestic at present
Producer is not because hydraulic valve development ability is strong, the general spool-type valves for using industrial standard, and traditional side valve type commutation
Valve has been difficult in adapt to the requirement of dump truck lifting hydraulic system in many aspects due to the limitation of its structure type.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.
The 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.
The valve block assembly integral installation is 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 the valve block assembly back side；Flow control valve one is located at the valve block assembly side, for protecting
The flow restriction that the hydraulic oil from accumulator and hydraulic pump passes through 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 the valve block assembly same side；Fluid-control one-way
Valve one is located at valve block assembly front；Balanced valve is located at the valve block assembly lower side；It is 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 the valve block assembly same side；
Solenoid directional control valve two controls the unlatching of hydraulic control one-way valve one, and solenoid directional control valve four controls opening for hydraulic control one-way valve two
Open, so as to control the lifting of container and whereabouts；The aperture area of the current control balanced valve of solenoid-operated proportional pressure-reducing valve is inputted, so as to
Control disengaging lifting hydraulic cylinder flow, and then control lifting hydraulic cylinder stretching and contraction speed, ensure container it is steady on
Rise and fall；Though check valve two, check valve three, check valve four and check valve five form bridge type return ensure that lifting or under
Fall operating mode, hydraulic oil enters from the entrance of balanced valve, exported out；Solenoid directional control valve three, which is opened, can make dump truck hoisting system real
Now float operating mode, prevent because road bump, loading space move up and down and lifting hydraulic cylinder damaged；Solenoid directional control valve one can be real
The off-load of existing accumulator, empties fluid.
The 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 inlet, hydraulic fluid port T and
Hydraulic fluid port Y is oil return opening, and hydraulic fluid port T is main oil return opening, and hydraulic fluid port Y is controls 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 mouths are pressure measurement hydraulic fluid port, connect pressure sensor.
The course of work of the valve block assembly is as follows：
When dump truck is not unloaded, all electromagnet power-off, hydraulic oil is entered by P mouths, by check valve one from hydraulic fluid port A
Into accumulator, when MA mouth pressure sensors detect that accumulator inner fluid pressure reaches setting value, the driving electricity of hydraulic pump
Machine is stopped, and accumulator topping up finishes.
When dump truck, which lifts, unloads, solenoid directional control valve two is powered, 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 gradually increases the electric current of input solenoid-operated proportional pressure-reducing valve, makes balance
The aperture area of valve gradually increases, and pressure oil enters elevating ram, realizes the upset unloading of container.
When MA mouth pressure sensors detect system pressure reduction, motor automatic start, oil pump and accumulator output oil
Liquid interflow enters elevating ram, further shortens the lifting time.In lifting process, keep stopping if necessary to centre position,
It can be powered off by solenoid directional control valve two, close hydraulic control one-way valve one to realize.When closing on lifting terminal, input electromagnetism is gradually reduced
The electric current of proportional pressure-reducing valve, so as to reduce the aperture area of balanced valve, loading space lifting speed is reduced, is avoided due to inertia reverse drawing liquid
Compressing cylinder.After completing unloading, solenoid directional control valve two is powered off, and hydraulic control one-way valve one is closed, and solenoid directional control valve four is powered, fluid-control one-way
Valve two is reversely opened, controller gradually increase input solenoid-operated proportional pressure-reducing valve electric current so that the aperture area of balanced valve by
It is cumulative big, so as to ensure container steady fall.When loading space falls close to terminal, input solenoid-operated proportional pressure-reducing valve is gradually reduced
Electric current, so as to reduce the aperture area of balanced valve, loading space falling speed is reduced, avoid producing greater impact to vehicle frame.
The above-mentioned technical proposal of the present invention has the beneficial effect that：
1st, valve block is all made up of screw-in cartridge valve.Screw-in cartridge valve has that flow resistance is small, simple in construction, oil rub resistance energy
The advantages that power is strong, response is fast, and screw-in cartridge valve is standard component, can effectively reduce the element in design of Hydraulic System and select
The difficulty of type, valve block difficulty of processing are small.Valve block system is compact-sized, small volume, complete function, the 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, by controlling the opening and closing of two hydraulic control one-way valves, lifting and the whereabouts of container are realized, simple in construction, behaviour
Facilitate.
4th, the bridge type return that four check valves are formed ensures that fluid enters balanced valve according to a direction all the time, realizes with one
The i.e. controllable loading space lifting of individual balanced valve and falling speed.
5th, the aperture area of balanced valve is changed by the electric current of control input solenoid-operated proportional pressure-reducing valve, so as to control disengaging to lift
The flow of hydraulic cylinder is risen, ensures steady rising and the whereabouts of container.
6th, the unlatching of oil return line electromagnetic direction valve, dump truck can be made to realize floating operating mode, prevented due to road bump, it is right
Lifting hydraulic cylinder damages.
7th, it is connected using electromagnetic direction valve with accumulator oil circuit, can easily realizes the off-load of accumulator, empties fluid, just
In maintenance.
8th, valve block is reserved turns to and brakes hydraulic fluid port, can be simultaneously steering and brake circuit fuel feeding.
Brief description of the drawings
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 valves one；2- overflow valves；3- flow control valves one；4- solenoid directional control valves one；5- hydraulic control one-way valves
One；6- solenoid directional control valves two；7- check valves two；8- check valves three；9- balanced valves；10- check valves four；11- check valves five；12-
Solenoid directional control valve three；13- hydraulic control one-way valves two；14- solenoid directional control valves four；15- solenoid-operated proportional pressure-reducing valves；16- supports；P- oil-feeds
Mouthful；A- accumulators；B- lifting hydraulic cylinder interfaces；C- braking in a turn interfaces；The main oil return openings of T-；Y- controls oily oil return opening；MA-
Pressure measurement hydraulic fluid port.
Embodiment
To make 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, the 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 the valve block assembly back side；Flow control valve 1 is located at the valve block assembly side, is used for
The flow restriction that the hydraulic oil from accumulator and hydraulic pump passes through when ensureing to lift work is 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 the valve block assembly phase homonymy
Face；Hydraulic control one-way valve 1 is located at valve block assembly front；Balanced valve 9 is located at the 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 the valve block assembly phase
Ipsilateral；
Solenoid directional control valve 26 controls the unlatching of hydraulic control one-way valve 1, and solenoid directional control valve 4 14 controls hydraulic control one-way valve 2 13
Unlatching；Input the aperture area of the current control balanced valve 9 of solenoid-operated proportional pressure-reducing valve 15；Check valve 27, check valve 38, list
Bridge type return is formed to valve 4 10 and check valve 5 11.
The 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 inlet, hydraulic fluid port T
It is oil return opening with hydraulic fluid port Y, hydraulic fluid port T is main oil return opening, and hydraulic fluid port Y is controls oily oil return opening, and hydraulic fluid port A is accumulator, and hydraulic fluid port A connects
Accumulator, hydraulic fluid port B are 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 mouths are pressure measurement hydraulic fluid port, connect pressure sensor.
As shown in figure 1, the valve block assembly is in the total principle of running：
In dump truck normal driving process, electromagnetic direction valve 3 12 is opened, and can realize dump truck hoisting system
Floating operating mode, prevent from, due to road bump, damaging lifting hydraulic cylinder.
When dump truck is not unloaded, all electromagnet power-off, hydraulic oil is entered by P mouths, by check valve 1 from hydraulic fluid port
A enters accumulator, when MA mouth pressure sensors detect that accumulator inner fluid pressure reaches setting value, the driving electricity of hydraulic pump
Machine is stopped, and accumulator topping up finishes.
When dump truck, which lifts, unloads, solenoid directional control valve 26 is powered, and pressure oil in accumulator is by fluid-control one-way
Valve 1 is reversely opened, and hydraulic oil enters working oil path, and controller gradually increases the electric current of input solenoid-operated proportional pressure-reducing valve 15, made
The aperture area of balanced valve 9 gradually increases, and pressure oil enters elevating ram, realizes the upset unloading of container.
When MA mouth pressure sensors detect system pressure reduction, motor automatic start, oil pump and accumulator output oil
Liquid interflow enters elevating ram, further shortens the lifting time.In lifting process, keep stopping if necessary to centre position,
It can be powered off by solenoid directional control valve 26, close hydraulic control one-way valve 1 to realize.When closing on lifting terminal, input electricity is gradually reduced
The electric current of magnetic proportional pressure-reducing valve 15, so as to reduce the aperture area of balanced valve 9, loading space lifting speed is reduced, is avoided due to inertia
Reverse drawing hydraulic jack.After completing unloading, solenoid directional control valve 26 is powered off, and hydraulic control one-way valve 1 is closed, and solenoid directional control valve 4 14 is logical
Electricity, hydraulic control one-way valve 2 13 are reversely opened, and controller gradually increases the electric current of input solenoid-operated proportional pressure-reducing valve 15, so that balance
The aperture area of valve 9 gradually increases, so as to ensure container steady fall.When loading space falls close to terminal, input is gradually reduced
The electric current of solenoid-operated proportional pressure-reducing valve 15, so as to reduce the aperture area of balanced valve 9, loading space falling speed is reduced, is avoided to vehicle frame
Produce greater impact.
Fig. 5, Fig. 6, Fig. 7 and Fig. 8 are the three dimensional structure diagram of the valve block assembly.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, on the premise of principle of the present invention is not departed from, some improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
- A kind of 1. 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 the valve block assembly back side；Flow control valve one (3) is located at the valve block assembly side, is used for The flow restriction that the hydraulic oil from accumulator and hydraulic pump passes through when ensureing to lift work is in working flow；Solenoid directional control valve two (6), it is total to be located at the valve block for check valve three (8), solenoid directional control valve four (14), check valve five (11) and solenoid-operated proportional pressure-reducing valve (15) Into same side；Hydraulic control one-way valve one (5) is located at valve block assembly front；Balanced valve (9) is located at the 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 the valve block assembly same side；The valve block assembly integral installation is on support (16)；The unlatching of solenoid directional control valve two (6) control hydraulic control one-way valve one (5), solenoid directional control valve four (14) control hydraulic control one-way valve two (13) unlatching；Input the aperture area of the current control balanced valve (9) of solenoid-operated proportional pressure-reducing valve (15)；Check valve two (7), list Bridge type return is formed to valve three (8), check valve four (10) and check valve five (11).
- 2. pure Electric dump truck hydraulic lifting system valve block assembly according to claim 1, it is characterised in that：The 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 inlet, and hydraulic fluid port T and hydraulic fluid port Y are oil return opening, Hydraulic fluid port T is main oil return opening, and hydraulic fluid port Y is controls oily oil return opening, and hydraulic fluid port A is accumulator, and hydraulic fluid port A connects accumulator, and hydraulic fluid port B is act Hydraulic cylinder interface is risen, 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 braked；MA mouths are survey Press oil port, connect 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 mouths, enters accumulator from hydraulic fluid port A by check valve one (1), When MA mouth pressure sensors detect that accumulator inner fluid pressure reaches setting value, the motor of hydraulic pump is stopped, Accumulator topping up finishes.
- 4. pure Electric dump truck hydraulic lifting system valve block assembly according to claim 1, it is characterised in that：Work as self-unloading When vehicle hoisting is unloaded, solenoid directional control valve two (6) is powered, and the pressure oil in accumulator is reverse by hydraulic control one-way valve one (5) Open, hydraulic oil enters working oil path, and controller gradually increases the electric current of input solenoid-operated proportional pressure-reducing valve (15), makes balanced valve (9) aperture area gradually increases, 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 |
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| Publication Number | Publication Date |
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| CN106402058A CN106402058A (en) | 2017-02-15 |
| CN106402058B true CN106402058B (en) | 2017-12-15 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189730B (en) * | 2017-12-29 | 2019-10-11 | 南理工泰兴智能制造研究院有限公司 | A kind of large-tonnage plate self unloading machine |
| CN108443250B (en) * | 2018-03-26 | 2024-01-19 | 广东鸿图科技股份有限公司 | Movable die-casting local pressurizing device with feedback mechanism |
| CN108302079B (en) * | 2018-04-04 | 2023-08-11 | 徐工集团工程机械股份有限公司科技分公司 | Gearbox power output control system and control method |
| 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 |
| 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 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040208754A1 (en) * | 2001-03-28 | 2004-10-21 | Hydraulic Controls, Inc. | Speed regulated oil delivery system |
| CN101380915B (en) * | 2008-10-16 | 2010-06-02 | 湘潭电机股份有限公司 | Hydraulic integrated system for lifting electric power wheel self-discharging vehicle |
| CN201866000U (en) * | 2010-11-03 | 2011-06-15 | 秦皇岛天业通联重工股份有限公司 | High-integration threaded cartridge valve of large-tonnage off-load dump truck |
| CN102059973B (en) * | 2010-12-30 | 2013-01-23 | 湘电重型装备股份有限公司 | Lifting hydraulic integrated system for large-tonnage electric-wheel mining dumper |
| CN202480940U (en) * | 2011-12-24 | 2012-10-10 | 广西玉柴重工有限公司 | Lifting and steering valve group of rigid self-dumping truck |
| CN203098440U (en) * | 2013-01-29 | 2013-07-31 | 湖南鸿辉科技有限公司 | Electric-wheel dump-truck lifting hydraulic integration control valve set |
| CN205559385U (en) * | 2016-04-29 | 2016-09-07 | 泰富重工制造有限公司 | Engineering machine tool amplitude changing device's hydraulic control system |
| CN206175356U (en) * | 2016-10-28 | 2017-05-17 | 北京科技大学 | Electricelectric moves dump truck hydraulic pressure and lifts system's valve piece assembly |
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2016
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