CN207726682U - A kind of fork truck electric control multi-way valve - Google Patents
A kind of fork truck electric control multi-way valve Download PDFInfo
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- CN207726682U CN207726682U CN201721123322.0U CN201721123322U CN207726682U CN 207726682 U CN207726682 U CN 207726682U CN 201721123322 U CN201721123322 U CN 201721123322U CN 207726682 U CN207726682 U CN 207726682U
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Abstract
The utility model belongs to electro-hydraulic proportional control technology, proposes a kind of fork truck electric control multi-way valve, solves the problems, such as fork truck in special environment, dangerous field someone operation.Wherein, the import of pressure reducing valve 20 and P oil circuit connections, outlet is connected in series with check valve 23, check valve 23 exports brake accumulator 2 in parallel and brake-pressure sensor 24, then service brake valve 3 and braking valve for vehicle 4 in parallel, the oil return opening of service brake valve 3 and braking valve for vehicle 4 and T oil circuit connections, the outlet X2 of service brake valve 3 are connect with running brake, and the outlet X1 of braking valve for vehicle 4 is connect with parking brake.
Description
Technical field
The utility model belongs to electro-hydraulic proportional control technology, and in particular to a kind of electric control multi-way valve being mainly used for fork truck.
Background technology
With being growing more intense for fork truck market competition, the demand for developing for fork truck technology and innovating is also more urgent,
There is quick development in middle electri forklift technology, and intellectualized technology has also obtained trial gradually and popularization and application.For electricity
Electrical forklift refers not only to the application of the dynamical systems such as accumulator, motor, while also including automatically controlledization of control system, especially holds
Hydraulic system automatically controlledization of row mechanism.Currently, well-known producer has increased exploration and research and development in the field, relevant electricity both at home and abroad
Liquid proportional technology also gradually starts to apply on electri forklift.But, current electri forklift is mainly intended to functional performance
Improvement, be used for special environment, dangerous field the intellectual product for being remotely controlled operation.Based on this, the utility model
It is proposed a kind of electric control multi-way valve being remotely controlled the fork truck that operation can be also operated manually.
Invention content
The purpose of the present invention：It proposes a kind of fork truck electric control multi-way valve, solves fork truck in special environment, dangerous field someone
The problem of operation.
Technical scheme of the present invention：
A kind of fork truck electric control multi-way valve, import and the P oil circuit connections of pressure reducing valve 20, outlet are connected in series with check valve 23,
Check valve 23 exports brake accumulator 2 in parallel and brake-pressure sensor 24, then service brake valve 3 and braking valve for vehicle in parallel
4, the oil return opening and T oil circuit connections of service brake valve 3 and braking valve for vehicle 4, the outlet X2 and running brake of service brake valve 3
Connection, the outlet X1 of braking valve for vehicle 4 are connect with parking brake；
Switching valve 19 is series at P oil circuits, and switching valve 19 exports C1 and connect with the import Ps of pressure-gradient control valve 18,19 hydraulic fluid port of switching valve
It is PL oil circuits that C2 is connected to the EF of pressure-gradient control valve 18 mouths；
The CF hydraulic fluid ports of pressure-gradient control valve 18 are connect with the import of steering gear 17, load feedback mouth and the pressure-gradient control valve 18 of steering gear 17
LS mouthfuls of connections, the oil return opening of steering gear 17 are connected to and then are parallel to T oil circuits, the work of steering gear 17 with the drain tap of pressure-gradient control valve 18
Then mouth SL and SR is connected to the working hole of steering control valve 5 respectively to be connected to steering working hole A, B；Steering control valve 5 into
Hydraulic fluid port and PL oil circuit connections, oil return opening and T oil circuit connections, shuttle valve 6 in parallel between two working holes of steering control valve 5, shuttle valve 6
Outlet, which is connected, turns to overflow valve 7, therebetween parallel connection steering pressure sensor 8, and turns to outlet and the T oil circuits company of overflow valve 7
It connects；
The oil inlet of lift valve 16 connects PL oil circuits, and oil outlet connects T oil circuits, and working hole is connect with the import of valve 9 is kept,
It is lifting work mouth L to keep the outlet of valve 9, keeps the outlet oil circuit connection lifting pressure sensor 10 of valve 9, and keep valve 9
Emergency valve 11 in parallel between outlet and T oil circuits；
The oil inlet of inclined valve 15 and PL oil circuit connections, oil return opening and T oil circuit connections, working hole respectively with interlock valve 12
Into the connection of, oil return opening, the working hole of interlock valve 12 is the working hole A1 and B1 of pitch system.Additional valve a13's and additional valve b14
Oil inlet is with PL oil circuit connections, oil return opening and T oil circuit connections, and working hole is respectively A3, B3 and A2, B2.
Unloading valve 1 is proportion magnetic valve, is defaulted as normally open.
Switching valve 19, pressure-gradient control valve 18, steering control valve 5, shuttle valve 6, turns to overflow valve 7 and steering pressure biography at steering gear 17
Sensor 8 constitutes steering, and wherein switching valve 19 is switch electromagnetic valve, turns to manually with automatically controlled switching, gives tacit consent to control
For manual mode；Pressure-gradient control valve 18 and steering gear 17 constitute hand-hydraulic servo steering system；Steering control valve 5 is ratio electromagnetism
Valve realizes that the ratio of automatically controlled steering controls, and shuttle valve 6, steering overflow valve 7 and steering pressure sensor 8, can limit highest steering
It pressure and is precisely controlled to controller value of feedback with realizing.
Lift valve 16 keeps valve 9, lifting pressure sensor 10 and emergency valve 11 to constitute lift control system, wherein lifting
Valve 16 is big flow proportion magnetic valve, realizes the ratio control and quick acting of rising, and the holding valve 9 of jacking system can be used for
Position when lifting stops is kept, and emergency valve 11 can guarantee in lift valve 16 and keep 9 fault condition of valve that can still carry out decline behaviour
Make.
Interlock valve 12 and inclined valve 15 constitute roll control system, and wherein inclined valve 15 is proportion magnetic valve, realizes and tilts
The ratio of system controls, and the reliable and secure control to pitch system is realized in combination with interlock valve 12.
Additional valve a13 and additional valve b14 is switch electromagnetic valve, to realize the control to other accessories, is realized quick
On-off line operation.
Advantages of the present invention：
The function that the electric control multi-way valve of the utility model had both retained original steering wheel, handle controls, while can be remotely controlled
Operation, and can be achieved energy saving by the setting of unloading valve, pressure sensor etc. and be precisely controlled, while there is error protection, answer
The security functions such as anxious operation, disclosure satisfy that the requirement of various environment and operating mode.
Description of the drawings：
Fig. 1 is a kind of hydraulic schematic diagram of fork truck electric control multi-way valve of the utility model
In figure：1- unloading valves, 2- brake accumulators, 3- service brake valves, 4- braking valve for vehicle, 5- steering control valves, 6-
Shuttle valve, 7- steering overflow valves, 8- steering pressure sensors, 9- holding valves, 10- lifting pressure sensors, 11- emergency valves, 12- are mutual
Locking-valve, 13- additional valves a, 14- additional valve b, 15- inclined valve, 16- lift valves, 17- steering gears, 18- pressure-gradient control valves, 19- switching valves,
20- pressure reducing valves, the main overflow valves of 21-, 22- primary pressure sensors, 23- check valves, 24- brake-pressure sensors
Specific implementation mode：
The technical solution of the utility model is：Based on electro-hydraulic proportional control technology, use ratio solenoid valve and switch electromagnetism
Valve replaces the pilot operated valve device of each executing agency, and the value of feedback of combination pressure sensor is precisely controlled by controller algorithm,
And then realize intelligent remote control function.Wherein, the automatically controlled proportion magnetic valve that is diverted through is controlled, be arranged load pressure sensor and
Angular transducer at executing agency carries out feedback control, and manual steering retains the hydraulic power-assisted steering mechanism of former steering,
Ensure the manipulation sense of manual steering and steering follows and limit function, automatically controlled steering and manual steering are cut by solenoid valve
It changes；Parking braking and service brake are provided with accumulator respectively by switch electromagnetic valve and proportional solenoid valve control, ensure
Shutdown status can also carry out brake operating；Opening for two auxiliary controls is arranged by proportional solenoid valve control in lifting and inclination
Powered-down magnet valve, to the control of other accessories.
A kind of fork truck electric control multi-way valve, including：Unloading valve, main overflow valve, braking compression release valve, brake accumulator, parking
Brake valve, service brake valve, steering control valve, jacking system control valve, pitch system control valve, additional function control valve
And pressure sensor etc..Wherein, steering control valve include switching valve, steering control valve, pressure-gradient control valve, steering gear, shuttle valve and
Turn to overflow valve；Jacking system control valve includes lift valve, keeps valve and emergency valve；Pitch system control valve include inclined valve and
Interlock valve.
Specifically, when general work occasion is suitble to manual operation, by the handoff functionality of controller, each solenoid valve receives
Handle or foot-operated control signal are acted, while steering is switched to steering wheel operation, realizes manually control at this time；And
When special or hazardous environment, straighforward operation is switched to by switching push button, the control solenoid valve of each executing agency receives distant at this time
The signal of control equipment is acted, and then realizes long-range remote control function.
The operation principle and embodiment of the utility model fork truck electric control multi-way valve are carried out with reference to appended schematic diagram
Detailed description, but principle schematic and embodiment are not intended to limit the utility model, it is all to use the utility model control principle
Multi-way valve, all should belong to the protection range of the utility model.
Embodiment
For the fork truck of the utility model with electric control multi-way valve hydraulic principle specifically such as Fig. 1, constituent element includes unloading valve 1, system
Dynamic accumulator 2, braking valve for vehicle 4, steering control valve 5, shuttle valve 6, turns to overflow valve 7, steering pressure sensing at service brake valve 3
Device 8, keep valve 9, lifting pressure sensor 10, emergency valve 11, interlock valve 12, additional valve a13, additional valve b14, inclined valve 15,
Lift valve 16, steering gear 17, pressure-gradient control valve 18, switching valve 19, pressure reducing valve 20, main overflow valve 21, primary pressure sensor 22, check valve
23 and brake-pressure sensor 24.
The electric control multi-way valve oil circuit is oil circuit in parallel, and working connection is P oil circuits and T oil circuits, unloading valve 1, steering control valve
5, additional valve a13, additional valve b14, inclined valve 15, lift valve 16, pressure reducing valve 20, main overflow valve 21, primary pressure sensor 22 are equal
It is parallel on P oil circuits, and unloading valve 1, main overflow valve 21 are directly parallel between P oil circuits and T oil circuits.The import of pressure reducing valve 20
With P oil circuit connections, outlet is connected in series with check valve 23, and check valve 23 exports brake accumulator 2 in parallel and brake-pressure sensor
24, then service brake valve 3 and braking valve for vehicle 4 in parallel, the oil return opening and T oil circuits of service brake valve 3 and braking valve for vehicle 4 connect
It connects, the outlet X2 of service brake valve 3 is connect with running brake, and the outlet X1 of braking valve for vehicle 4 is connect with parking brake.It cuts
It changes valve 19 and is series at P oil circuits, switching valve 19 exports C1 and connect with the import Ps of pressure-gradient control valve 18,19 hydraulic fluid port C2 of switching valve and pressure-gradient control valve
18 EF mouths connection is PL oil circuits.The CF hydraulic fluid ports of pressure-gradient control valve 18 are connect with the import of steering gear 17, the load feedback of steering gear 17
Mouth is connect with the LS of pressure-gradient control valve 18 mouths, and the oil return opening of steering gear 17 is connected to and then is parallel to T oil circuits with the drain tap of pressure-gradient control valve 18,
Then the working hole SL and SR of steering gear 17 are connected to the working hole of steering control valve 5 respectively to be connected to steering working hole A, B；Turn
To oil inlet and PL oil circuit connections, oil return opening and the T oil circuit connections of control valve 5, between two working holes of steering control valve 5 simultaneously
Join shuttle valve 6, the outlet of shuttle valve 6 series connection turns to overflow valve 7, therebetween parallel connection steering pressure sensor 8, and turns to overflow valve 7
Outlet and T oil circuit connections.The oil inlet of lift valve 16 connects PL oil circuits, and oil outlet connects T oil circuits, working hole and holding valve 9
Import connects, and it is lifting work mouth L to keep the outlet of valve 9, keeps the outlet oil circuit connection lifting pressure sensor 10 of valve 9, and
Emergency valve 11 in parallel between the outlet and T oil circuits of holding valve 9.The oil inlet of inclined valve 15 and PL oil circuit connections, oil return opening and T oil
Road connects, and working hole connect with interlock valve 12 into, oil return opening respectively, the working hole of interlock valve 12 for pitch system working hole
A1 and B1.The oil inlet of additional valve a13 and additional valve b14 with PL oil circuit connections, oil return opening and T oil circuit connections, and working hole
Respectively A3, B3 and A2, B2.
Wherein, brake accumulator 2, service brake valve 3, braking valve for vehicle 4, pressure reducing valve 20, check valve 23 and brake pressure
Sensor 24 constitute braking control system, pressure reducing valve 20 be used for by system pressure be reduced to braking needed for pressure, make braking system and
Main system shares an oil sources, and brake accumulator 2 ensures carry out brake operating, braking pressure in off-load operating mode or shutdown status
Force snesor 24 can detect brake system pressure so that for brake accumulator filling liquid 2, check valve 23 ensures brake accumulator 2 at any time
Fluid will not blow back into main system, ensure the normal work of braking system；Braking valve for vehicle 4 is switch electromagnetic valve, is realized quick
Braking releases braking；Service brake valve 3 is proportion magnetic valve, realizes the ratio operation of braking.
Unloading valve 1 is proportion magnetic valve, is defaulted as normally open, and system is in off-load operating mode, and when system needs work
Controller output order makes its closing.
Switching valve 19, pressure-gradient control valve 18, steering control valve 5, shuttle valve 6, turns to overflow valve 7 and steering pressure biography at steering gear 17
Sensor 8 constitutes steering, and wherein switching valve 19 is switch electromagnetic valve, turns to manually with automatically controlled switching, gives tacit consent to control
For manual mode；Pressure-gradient control valve 18 and steering gear 17 constitute hand-hydraulic servo steering system；Steering control valve 5 is ratio electromagnetism
Valve realizes that the ratio of automatically controlled steering controls, and shuttle valve 6, steering overflow valve 7 and steering pressure sensor 8, can limit highest steering
It pressure and is precisely controlled to controller value of feedback with realizing.
Lift valve 16 keeps valve 9, lifting pressure sensor 10 and emergency valve 11 to constitute lift control system, wherein lifting
Valve 16 is big flow proportion magnetic valve, realizes the ratio control and quick acting of rising, and the holding valve 9 of jacking system can be used for
Position when lifting stops is kept, and emergency valve 11 can guarantee in lift valve 16 and keep 9 fault condition of valve that can still carry out decline behaviour
Make.
Interlock valve 12 and inclined valve 15 constitute roll control system, and wherein inclined valve 15 is proportion magnetic valve, realizes and tilts
The ratio of system controls, and the reliable and secure control to pitch system is realized in combination with interlock valve 12.
Additional valve a13 and additional valve b14 is switch electromagnetic valve, to realize the control to other accessories, is realized quick
On-off line operation.
Specifically, when the electric control multi-way valve works, manual mode either remote state is first judged as by controller, in turn
Determine that each solenoid valve receives the source of signal, unloading valve 1 is closed after start-up operation.If it is manual operation, at switching valve 19
In default location, steering turn to and is moved by steering wheel input instruction control steering gear 17 and the distribution fluid of pressure-gradient control valve 18
Make, for steering control valve 5 at this time without action, shuttle valve 6 turns to 8 progress corresponding datas of overflow valve 7 and steering pressure sensor
Record and display, be not involved in control；Braking system is depressured by pressure reducing valve 20 first, service brake valve 3 and parking system
Dynamic valve 4 receives service braking pedal respectively and brake operating is braked or released to the operational order of parking vehicle brake lever, and system is stopped
Brake accumulator 2 can continue to provide brake pressure after only working, while check valve 23 ensures that the flow of brake accumulator 2 will not return
Working connection is returned, 24 feedback signal of brake-pressure sensor can be brake accumulator 2 to controller after 2 insufficient pressure of brake accumulator
Filling liquid；The lift valve 16 of jacking system receives the instruction of lifting handle, while the control instruction for keeping valve 9 to receive controller controls
Elevating mechanism carries out rise and fall, and 10 Real-time Feedback pressure signal of lifting pressure sensor carries out operation control in controller,
Failure lift valve 16 is met when such as declining or keeps valve 9 that can not open, and is manually operable the control of emergency valve 11 and is declined；Pitch system
Inclined valve 15 receives the control for the instruction progress leaning device for tilting handle, and 12 ancillary oblique valve 15 of interlock valve completes tilting action
Reliability service；The operational order that additional valve a13 and additional valve b14 receives additional accessory respectively is acted accordingly；Work
Process such as system pressure is more than the setting value of main overflow valve 21, and main overflow valve 21, which is opened, carries out overflow, and then is protected to system
Shield.
If being switched to straighforward operation, the switching valve 19 of controller output signal control at this time switches, steering gear 17 and preferential
Valve 18 no longer works, and steering is operated by controller output order control steering control valve 5；Service brake valve 3, parking
The telecommand that brake valve 4, lift valve 16, inclined valve 15, additional valve a13 and additional valve b14 receive controller respectively carries out phase
Remote control operation is realized in the action answered, and detailed process is consistent with above-mentioned manual operation, and details are not described herein again.
Claims (6)
1. a kind of fork truck electric control multi-way valve, which is characterized in that
The import of pressure reducing valve (20) and P oil circuit connections, outlet are connected in series with check valve (23), check valve (23) outlet braking in parallel
Accumulator (2) and brake-pressure sensor (24), then service brake valve (3) in parallel and braking valve for vehicle (4), service brake valve
(3) it is connect with running brake with the oil return opening of braking valve for vehicle (4) and T oil circuit connections, the outlet X2 of service brake valve (3),
The outlet X1 of braking valve for vehicle (4) is connect with parking brake；
Switching valve (19) is series at P oil circuits, and switching valve (19) outlet C1 is connect with the import Ps of pressure-gradient control valve (18), switching valve (19)
It is PL oil circuits that hydraulic fluid port C2 is connected to the EF mouths of pressure-gradient control valve (18)；
The CF hydraulic fluid ports of pressure-gradient control valve (18) are connect with the import of steering gear (17), the load feedback mouth and pressure-gradient control valve of steering gear (17)
(18) LS mouths connection, the oil return opening of steering gear (17) are connected to and then are parallel to T oil circuits with the drain tap of pressure-gradient control valve (18), turn to
Then the working hole SL and SR of device (17) are connected to the working hole of steering control valve (5) respectively to be connected to steering working hole A, B；Turn
To oil inlet and PL oil circuit connections, oil return opening and the T oil circuit connections of control valve (5), two working holes of steering control valve (5) it
Between shuttle valve (6) in parallel, shuttle valve (6) outlet series connection turns to overflow valve (7), therebetween parallel connection steering pressure sensor (8), and turns
To the outlet of overflow valve (7) and T oil circuit connections；
The oil inlet of lift valve (16) connects PL oil circuits, and oil outlet connects T oil circuits, and working hole is connect with the import of valve (9) is kept,
It is lifting work mouth L to keep the outlet of valve (9), keeps the outlet oil circuit connection lifting pressure sensor (10) of valve (9), and keep
Emergency valve (11) in parallel between the outlet and T oil circuits of valve (9)；
The oil inlet of inclined valve (15) and PL oil circuit connections, oil return opening and T oil circuit connections, working hole respectively with interlock valve (12)
Into the connection of, oil return opening, the working hole of interlock valve (12) is the working hole A1 and B1 of pitch system；Additional valve a13 and additional valve b14
Oil inlet with PL oil circuit connections, oil return opening and T oil circuit connections, and working hole is respectively A3, B3 and A2, B2.
2. a kind of fork truck electric control multi-way valve as described in claim 1, which is characterized in that
Unloading valve (1) is proportion magnetic valve, is defaulted as normally open.
3. a kind of fork truck electric control multi-way valve as described in claim 1, which is characterized in that
Switching valve (19), pressure-gradient control valve (18), steering control valve (5), shuttle valve (6), turns to overflow valve (7) and turns steering gear (17)
To pressure sensor (8) constitute steering, wherein switching valve (19) be switch electromagnetic valve, to control turn to manually with it is automatically controlled
Switching, be defaulted as manual mode；Pressure-gradient control valve (18) and steering gear (17) constitute hand-hydraulic servo steering system；Course changing control
Valve (5) is proportion magnetic valve, realizes the ratio control of automatically controlled steering, and shuttle valve (6), steering overflow valve (7) and steering pressure pass
Sensor (8) can limit highest steering pressure and is precisely controlled to controller value of feedback with realizing.
4. a kind of fork truck electric control multi-way valve as described in claim 1, which is characterized in that
Lift valve (16) keeps valve (9), lifting pressure sensor (10) and emergency valve (11) to constitute lift control system, wherein
Lift valve (16) is big flow proportion magnetic valve, realizes the ratio control and quick acting of rising, and the holding valve of jacking system
(9) can be used for lifting position when stopping to keep, emergency valve (11) can guarantee in lift valve (16) and keep valve (9) fault condition
Step-down operation can still be carried out.
5. a kind of fork truck electric control multi-way valve as described in claim 1, which is characterized in that
Interlock valve (12) and inclined valve (15) constitute roll control system, and wherein inclined valve (15) is proportion magnetic valve, and realization is inclined
The ratio control of oblique system, the reliable and secure control to pitch system is realized in combination with interlock valve (12).
6. a kind of fork truck electric control multi-way valve as described in claim 1, which is characterized in that
Additional valve a13 and additional valve b14 is switch electromagnetic valve, to realize the control to other accessories, realizes quick on-off
Operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123322.0U CN207726682U (en) | 2017-09-04 | 2017-09-04 | A kind of fork truck electric control multi-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721123322.0U CN207726682U (en) | 2017-09-04 | 2017-09-04 | A kind of fork truck electric control multi-way valve |
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| CN207726682U true CN207726682U (en) | 2018-08-14 |
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| CN201721123322.0U Active CN207726682U (en) | 2017-09-04 | 2017-09-04 | A kind of fork truck electric control multi-way valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217737A (en) * | 2019-06-20 | 2019-09-10 | 江苏建筑职业技术学院 | Aerial work platform control valve divided working status servomechanism and control method |
| CN110541856A (en) * | 2019-08-23 | 2019-12-06 | 安徽合力股份有限公司 | Unmanned operation automatic control forklift brake hydraulic system |
| CN110566521A (en) * | 2019-08-23 | 2019-12-13 | 安徽合力股份有限公司 | automatic explosion-proof fork truck hydraulic system of control |
-
2017
- 2017-09-04 CN CN201721123322.0U patent/CN207726682U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110217737A (en) * | 2019-06-20 | 2019-09-10 | 江苏建筑职业技术学院 | Aerial work platform control valve divided working status servomechanism and control method |
| CN110217737B (en) * | 2019-06-20 | 2020-09-04 | 江苏建筑职业技术学院 | Aerial work platform control valve working condition-division follow-up system and control method |
| CN110541856A (en) * | 2019-08-23 | 2019-12-06 | 安徽合力股份有限公司 | Unmanned operation automatic control forklift brake hydraulic system |
| CN110566521A (en) * | 2019-08-23 | 2019-12-13 | 安徽合力股份有限公司 | automatic explosion-proof fork truck hydraulic system of control |
| CN110566521B (en) * | 2019-08-23 | 2024-05-10 | 安徽合力股份有限公司 | Automatic explosion-proof fork truck hydraulic system of control |
| CN110541856B (en) * | 2019-08-23 | 2024-05-10 | 安徽合力股份有限公司 | Unmanned automatic control's fork truck braking hydraulic system |
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