CN207078973U - A kind of truck hydraulic control system for dropping oil temperature - Google Patents
A kind of truck hydraulic control system for dropping oil temperature Download PDFInfo
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- CN207078973U CN207078973U CN201720402613.7U CN201720402613U CN207078973U CN 207078973 U CN207078973 U CN 207078973U CN 201720402613 U CN201720402613 U CN 201720402613U CN 207078973 U CN207078973 U CN 207078973U
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Abstract
The utility model discloses a kind of truck hydraulic control system for dropping oil temperature, it includes hydraulic oil container, gear pump, banked direction control valves and execution unit, the execution unit is located at banked direction control valves delivery outlet, and the hydraulic oil in hydraulic oil container is controlled the action of execution unit through gear pump by banked direction control valves；The oil return line of the banked direction control valves is provided with radiator and back pressure check valve, and the back pressure check valve is in parallel with radiator.The truck hydraulic control system of the drop oil temperature, its cost is lower, and the suspender function of diversification is realized on most basic forklift hydraulic system platform；Lift maintainability simultaneously, reduce oil temperature in hydraulic system, lift vehicle Work Reliability of Hydraulic System；And safety protection function is more simple and reliable, meet the demand for security under different operating modes.
Description
Technical field
Fork truck control system is the utility model is related to, is specifically related to a kind of truck hydraulic control system for dropping oil temperature.
Background technology
Fork truck is as a kind of means of transport of maneuverability, transport, storage field at harbour, railway, warehouse, goods yard and other items
Institute, more and more important effect is played, the quality of its hydraulic system quality directly affects the service behaviour of fork truck and using effect
Rate.The hydraulic system of fork truck is that the pressure energy of hydraulic oil is converted into the kinetic energy and gravitional force of goods, so as to help fork truck real
Stock thing shifts.
It is heavy at present（12t）Fork truck configuration suspender needs that the hydraulic pressure on suspender could be realized using the banked direction control valves of pilot control
Act centralized Control, and hydraulic pressure everything raising, decline, sidesway, tilt forward and back, hanger twist lock etc. integrated control cost compared with
Height, be not suitable for requiring that Eco-power user requires.And existing heavy type（12t）The multichannel that fork truck is controlled using domestic common valve rod
Problems be present after configuring upper container spreader in valve, vehicle：
1st, suspender frequent operation, fluid needed for the oil cylinder on suspender is less, most of oily throttling return oil case, produces substantial amounts of
Heat, system oil temperature are higher.
2nd, it is difficult to control the hydraulic operation on suspender that valve rod, which manipulates,.
3rd, common valve rod manipulates, and without safety protection function, it is not outstanding tight to there is rotation lock during use, it is allowed to which door frame rises
The hidden danger risen.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of truck hydraulic control system for dropping oil temperature, and it has
Imitate and solve hydraulic oil backflow oil temperature height needed for existing fork truck, the difficult hydraulic operation controlled on suspender of valve rod manipulation, and common
Valve rod manipulates no safety protection function, that certain potential safety hazard etc. is above-mentioned then be present and exists.
Technical problem to be solved in the utility model is realized using following technical scheme：
A kind of truck hydraulic control system for dropping oil temperature, it includes hydraulic oil container, gear pump, banked direction control valves and execution unit,
The execution unit is located at banked direction control valves delivery outlet, and the hydraulic oil in hydraulic oil container controls execution unit through gear pump by banked direction control valves
Action；The oil return line of the banked direction control valves is provided with radiator and back pressure check valve, and the back pressure check valve is in parallel with radiator.
The utility model further improvement is that：The banked direction control valves includes rotation lock control valve and lift control valve in parallel,
The execution unit is including revolving lock oil cylinder and lift oil tank, and the rotation lock oil cylinder is located at and revolves lock control valve delivery outlet, described
Oil-lifting jar is located at lift control valve delivery outlet.
The utility model further improvement is that：Suspender fuel feeding electromagnetism is provided between the rotation lock control valve and rotation lock oil cylinder
Valve and hydraulic lock；Wherein, suspender tapered end be provided be used for obtain suspender tapered end grasping movement case sensor, it is described rotation lock oil cylinder
It is provided with the rotation lock sensor for being used for obtaining the rotation lock action of suspender tapered end；And it is provided between the lift control valve and lift oil tank
Governor valve and the unloading valve by rotation lock sensor feedback control action.
The utility model further improvement is that：The banked direction control valves includes tilt control valve；The execution unit also includes
Dump ram, and the dump ram is located at tilt control valve delivery outlet.
The utility model further improvement is that：The banked direction control valves includes sidesway control valve；The execution unit also includes
Sidesway oil cylinder, and the sidesway oil cylinder is located at sidesway control valve delivery outlet.
The utility model further improvement is that：Flow speed control valve is provided between the sidesway control valve and sidesway oil cylinder.
The utility model further improvement is that：The control hydraulic system also includes pressure-gradient control valve, steering gear and steering cylinder,
And gear pump is connected through pressure-gradient control valve with steering gear oil inlet, steering gear delivery outlet connection steering cylinder.
The utility model further improvement is that：The oil return line of the steering gear is provided with return filter.
The utility model further improvement is that：The hydraulic oil container is provided with hydraulic oil container Ventilated cap.
The utility model beneficial effect：The truck hydraulic control system of oil temperature drops in this kind, and its cost is lower, most basic
The suspender function of diversification is realized on forklift hydraulic system platform；Lift maintainability simultaneously, reduce oil temperature in hydraulic system, lifted
Vehicle Work Reliability of Hydraulic System；And safety protection function is more simple and reliable, meet the demand for security under different operating modes.
Brief description of the drawings
Fig. 1 is the utility model principle schematic diagram.
Wherein：1- hydraulic oil containers, 2- gear pumps, 3- oil suction filter cores, 4- radiators, 5- back pressure check valves, 6- unloading valves, 7-
Governor valve, 8- lift oil tanks, 9- flow speed control valves, 10- sidesway oil cylinders, 11- dump rams, 12- rotation lock oil cylinders, 13- hydraulic locks, 14-
Suspender fuel feeding magnetic valve, 15- banked direction control valves, 151- rotation lock control valves, 152- lift control valves, 153- sidesway control valves, 154- incline
Oblique control valve, 16- steering cylinders, 17- steering gears, 18- return filters, 19- pressure-gradient control valves, 20- hydraulic oil container Ventilated caps；
Technical characteristic：Case sensor and rotation lock sensor does not indicate in accompanying drawing.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
As shown in figure 1, a kind of truck hydraulic control system for dropping oil temperature, it includes hydraulic oil container 1, gear pump 2, banked direction control valves
15 and execution unit, the execution unit is located at the delivery outlet of banked direction control valves 15, and the hydraulic oil in hydraulic oil container 1 through gear pump 2 by
Banked direction control valves 15 controls the action of execution unit；The oil return line of the banked direction control valves 15 is provided with radiator 4 and back pressure check valve 5, and institute
It is in parallel with radiator 4 to state back pressure check valve 5：The DT mouths of the S2 ends of radiator 4 and the D1 ends of back pressure check valve 5 with banked direction control valves 15
It is connected, the D2 ends of back pressure check valve 5 are connected with the S1 ends of radiator 4, and the S1 ends of radiator 4 communicate with hydraulic oil container 1.Then
The high-temperature oil liquid that can be achieved to flow back in the system is handled through the cooling of radiator 4；Back pressure check valve 5 ensures that the oil return of banked direction control valves 15 has one
The fluid of constant flow passes through radiator 4, and when the back pressure of radiator 4 is higher, back pressure check valve 5 opens fluid pressure release, is dissipated with protecting
Hot device 4 is not damaged by high pressure.
The banked direction control valves 15 includes rotation lock control valve 151 and lift control valve 152；And the rotation lock control valve 151 and rise
Use and be connected in parallel between liter control valve 152.The execution unit includes rotation lock oil cylinder 12 and lift oil tank 8；And the rotation lock
Oil cylinder 12 is located at the delivery outlet of lift control valve 152 located at the delivery outlet of rotation lock control valve 151, the lift oil tank 8.
Suspender fuel feeding magnetic valve 14 and hydraulic lock 13 are provided between the rotation lock control valve 151 and rotation lock oil cylinder 12；Wherein,
Suspender tapered end be provided be used for obtain suspender tapered end grasping movement case sensor, i.e., case sensor obtain suspender crawl information
Feedback starts suspender fuel feeding magnetic valve 14 and hydraulic lock 13 acts, and then control rotation lock oil cylinder 12 acts；The rotation lock oil cylinder 12
It is provided with the rotation lock sensor for being used for obtaining the rotation lock action of suspender tapered end.A4, B4 mouth of banked direction control valves 15 connect suspender fuel feeding respectively
FP mouths, the FT mouths of magnetic valve 14, hydraulic lock 13 and suspender fuel feeding magnetic valve 14 are on suspender, on suspender fuel feeding magnetic valve 14
FA, FB are connected with Y1, Y2 in hydraulic lock 13 respectively, and Y3, Y4 in hydraulic lock 13 are connected with the corresponding end of rotation lock oil cylinder 12.
Governor valve 7 and unloading valve 6, and the rotation lock sensor are provided between the lift control valve 152 and lift oil tank 8
Suspender tapered end rotation lock information feedback control unloading valve 6 is obtained to act.The XP mouths of unloading valve 6 are connected with the B1 mouths of banked direction control valves 15, are unloaded
The S1 mouths of the XA mouths connection governor valve of lotus valve 6, the XT mouths of unloading valve 6 are directly connected to the hydraulic oil container 1 that flows back.When on suspender tapered end
Case sensor do not work, then revolve lock sensor also attonity, unloading valve 6 starts off-load action, main system off-load；Now
There is no fluid to enter lift oil tank 8, do not allow raising.The S2 mouths of governor valve 7 are directly connected to lift oil tank 8, and governor valve 7 controls goods
The reasonable decline of thing, regulation meet the decrease speed of fully loaded door frame between 300-600mm/s.
The banked direction control valves 15 also includes tilt control valve 154 in parallel；The execution unit also includes dump ram 11；And
The dump ram 11 is located at the delivery outlet of tilt control valve 154；Wherein, the A2 connections dump ram 11 of banked direction control valves 15 has bar
Chamber, the rodless cavity of the B2 connections dump ram 11 of banked direction control valves 15.The connection body of dump ram 11 and door frame, control door frame anteversion and retroversion
Tiltedly.
The banked direction control valves 15 also includes sidesway control valve 153 in parallel；The execution unit also includes sidesway oil cylinder 10；And
The sidesway oil cylinder 10 is located at the delivery outlet of sidesway control valve 153；And it is provided between the sidesway control valve 153 and sidesway oil cylinder 10
Flow speed control valve 9；The flow speed control valve 9 is to realize the sidesway speed of sidesway oil cylinder 10 evenly.The T2 mouths of flow speed control valve 9 and banked direction control valves 15
A3 mouths connect, and the T4 mouths of flow speed control valve 9 connect with the B3 mouths of banked direction control valves 15；The T1 mouths connection sidesway oil cylinder 10 of flow speed control valve 9 without bar
Chamber, the rod chamber of the T3 mouths connection sidesway oil cylinder 10 of flow speed control valve 9.
The control hydraulic system also includes pressure-gradient control valve 19, steering gear 17 and steering cylinder 16, and gear pump 2 is through pressure-gradient control valve 19
It is connected with the oil inlet of steering gear 17, the delivery outlet of steering gear 17 connection steering cylinder 16；Wherein, the hydraulic oil warp in hydraulic oil container 1
Gear pump 2 is controlled the action of steering cylinder 16 by pressure-gradient control valve 19 and steering gear 17.
Steering cylinder 16 is arranged on rear pontic, and it connects A, B hydraulic fluid port in steering gear 17, the closure of steering gear 17
Disk, pressure-gradient control valve 19, which controls, flows to the fluid of steering gear 17, the B2 mouths of the P mouth tooth connections wheel pump 2 on pressure-gradient control valve 19, on pressure-gradient control valve
YP, LS connect P1 and LS1 mouths in steering gear 17, the T mouth oil returns of pressure-gradient control valve 19 respectively；The oil return line of the steering gear 17 is set
There is a return filter 18, the T1 mouths oil return connection return filter 18 of steering gear 17, in the real time filtering system of return filter 18
Impurity.
The hydraulic oil container 1 is provided with hydraulic oil container Ventilated cap 20；Hydraulic oil container Ventilated cap 20 is realized inside and outside hydraulic oil container 1
Portion's air pressure balance, and the air into hydraulic oil container 1 is filtered, block dust to enter hydraulic system.
When complete machine works, gear pump 2 sucks hydraulic oil liquid by the oil suction filter core 3 in hydraulic oil container 1, is sent to after supercharging
Banked direction control valves 15；Flowed through by the fluid of banked direction control valves 15 by valve inner, when no raising action, tilting action, sidesway action,
When go to action and rotation lock action, the fluid come out from gear pump 2 directly passes through the oil return fuel tank of radiator 4.If in summer environment
When temperature is higher, fluid can radiate through radiator 4, and temperature may be provided at 50-55 DEG C of unlatching blower fan work；Back pressure check valve 5
Ensure fluid pressure release when the back pressure of radiator 4 is higher, to protect radiator 4 not damaged by high pressure.
When there is raising to act demand, when capturing container, suspender tapered end will fall on container complete machine first, triggering
Case sensor, then suspender fuel feeding magnetic valve 14 obtains electric, and fluid supplies hydraulic lock 13 by suspender fuel feeding magnetic valve 14, passes through
The fluid supply rotation lock oil cylinder 12 of hydraulic lock 13；Rotation lock oil cylinder 12 is started working, touching rotation lock sensor after rotation is locked into position, then
Rotation lock sensor feedback signal to unloading valve 6, unloading valve 6 is failure to actuate, and raising is controlled by governor valve 7, realizes that door frame band goods rises
Rise；When declining, also controlled by governor valve 7, make the reasonable decrease speed of goods between 300-600mm/s, off-load now
Valve does not still work, and normal fluid passes through；When revolving lock oil cylinder 12 without in place, i.e., revolve lock sensor, then off-load without touching
Valve 6 must electrically activate off-load action, not allow raising, supply the fluid of lift oil tank 8 through the off-load of unloading valve 6, directly flow back hydraulic pressure
Fuel tank 1.Then it is not allow raising to ensure that rotation lock is not locked, and raising is just allowed after locking, while hydraulic lock 13 is to ensure rotation
Lock will not self-return, meet demand for security.
When there is tilting action demand, the oil-feed of dump ram 11, tilting forward and back for door frame is realized.
When side moves act demand, multi-way valve operating mechanism is manipulated, the fluid of sidesway oil cylinder 10 is supplied from banked direction control valves 15
Flow speed control valve 9 is first flowed through, sidesway oil cylinder 10 is supplied after uniform speed governing；The main function of flow speed control valve 9 is just so that sidesway action more
Add at the uniform velocity, it is more steadily, smaller to rock.
When there is go to action demand, gear pump 2 sucks hydraulic oil liquid, supercharging by the oil suction filter core 3 in hydraulic oil container 1
After be sent to pressure-gradient control valve 19；Diverted device 17 controls moving left and right for steering cylinder 16, so as to drive vehicle rear-axle steering.Turn to
Signal is conveyed by the LS mouths on pressure-gradient control valve 19 during LS1 signal oil causes for gossip on device 17, controls the oil pump capacity of the valve element of pressure-gradient control valve 19,
To meet the fluid quantity delivered of different turning velocities.
The utility model provides a kind of truck hydraulic control system for dropping oil temperature, and the hydraulic control system cost is lower,
The suspender function of diversification is realized on most basic forklift hydraulic system platform；Lift maintainability simultaneously, reduce hydraulic system
Oil temperature, lift vehicle Work Reliability of Hydraulic System；And safety protection function is more simple and reliable, meet the safety under different operating modes
Demand.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model requires protection scope
By appended claims and its equivalent thereof.
Claims (7)
1. a kind of truck hydraulic control system for dropping oil temperature, it includes hydraulic oil container, gear pump, banked direction control valves and execution unit, institute
State execution unit and be located at banked direction control valves delivery outlet, and the hydraulic oil in hydraulic oil container controls execution unit through gear pump by banked direction control valves
Action；It is characterized in that：The oil return line of the banked direction control valves is provided with radiator and back pressure check valve, and the back pressure check valve is with dissipating
Hot device is in parallel.
A kind of 2. truck hydraulic control system for dropping oil temperature according to claim 1, it is characterised in that：The banked direction control valves bag
The rotation lock control valve and lift control valve of parallel connection are included, the execution unit includes rotation lock oil cylinder and lift oil tank, and the rotation lock
Oil cylinder is located at lift control valve delivery outlet located at rotation lock control valve delivery outlet, the lift oil tank.
A kind of 3. truck hydraulic control system for dropping oil temperature according to claim 2, it is characterised in that：The rotation lock control
Suspender fuel feeding magnetic valve and hydraulic lock are provided between valve and rotation lock oil cylinder；Wherein, suspender tapered end, which is provided with, is used to obtain suspender tapered end
Grasping movement case sensor, it is described rotation lock oil cylinder be provided be used for obtain suspender tapered end rotation lock action rotation lock sensor；
And governor valve and the unloading valve by rotation lock sensor feedback control action are provided between the lift control valve and lift oil tank.
A kind of 4. truck hydraulic control system for dropping oil temperature according to claim 1, it is characterised in that：The banked direction control valves bag
Include tilt control valve；The execution unit also includes dump ram, and the dump ram is located at tilt control valve delivery outlet.
A kind of 5. truck hydraulic control system for dropping oil temperature according to claim 1, it is characterised in that：The banked direction control valves bag
Include sidesway control valve；The execution unit also includes sidesway oil cylinder, and the sidesway oil cylinder is located at sidesway control valve delivery outlet.
A kind of 6. truck hydraulic control system for dropping oil temperature according to claim 5, it is characterised in that：The sidesway control
Flow speed control valve is provided between valve and sidesway oil cylinder.
A kind of 7. truck hydraulic control system for dropping oil temperature according to claim 1, it is characterised in that：The hydraulic oil container
It is provided with hydraulic oil container Ventilated cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720402613.7U CN207078973U (en) | 2017-04-18 | 2017-04-18 | A kind of truck hydraulic control system for dropping oil temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720402613.7U CN207078973U (en) | 2017-04-18 | 2017-04-18 | A kind of truck hydraulic control system for dropping oil temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207078973U true CN207078973U (en) | 2018-03-09 |
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ID=61436071
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720402613.7U Active CN207078973U (en) | 2017-04-18 | 2017-04-18 | A kind of truck hydraulic control system for dropping oil temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3560886A3 (en) * | 2018-04-06 | 2020-02-26 | The Raymond Corporation | Auxiliary hydraulic circuit filtering systems and methods |
| CN115402975A (en) * | 2022-02-16 | 2022-11-29 | 长兴强盛机械有限公司 | Reliable durable electric pallet truck |
-
2017
- 2017-04-18 CN CN201720402613.7U patent/CN207078973U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3560886A3 (en) * | 2018-04-06 | 2020-02-26 | The Raymond Corporation | Auxiliary hydraulic circuit filtering systems and methods |
| CN115402975A (en) * | 2022-02-16 | 2022-11-29 | 长兴强盛机械有限公司 | Reliable durable electric pallet truck |
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