CN206751322U - A kind of heavy forklift sling hydraulic pressure control system - Google Patents
A kind of heavy forklift sling hydraulic pressure control system Download PDFInfo
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- CN206751322U CN206751322U CN201720402592.9U CN201720402592U CN206751322U CN 206751322 U CN206751322 U CN 206751322U CN 201720402592 U CN201720402592 U CN 201720402592U CN 206751322 U CN206751322 U CN 206751322U
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- rotation lock
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- oil
- lift
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Abstract
The utility model discloses a kind of heavy forklift sling hydraulic pressure control system, it includes hydraulic oil container, gear pump, banked direction control valves and execution unit, the banked direction control valves includes rotation lock control valve and lift control valve in parallel, 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；Wherein, suspender fuel feeding magnetic valve and hydraulic lock are provided between the rotation lock control valve and rotation lock oil cylinder；And suspender tapered end be provided be used for obtain suspender tapered end grasping movement case sensor, rotation lock oil cylinder be provided be used for obtain suspender tapered end rotation lock action rotation lock sensor；And the unloading valve by rotation lock sensor feedback control action is provided between the lift control valve and lift oil tank.The control system, rotation lock can be avoided to carry out the action of door frame raising in the case of not hanging tightly, improve security；Realize the suspender function of diversification；Reduce oil temperature in hydraulic system.
Description
Technical field
Fork truck control system is the utility model is related to, is specifically related to a kind of heavy forklift sling hydraulic pressure control system.
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, it is difficult to control the hydraulic operation on suspender that valve rod, which manipulates,.
2nd, 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.
3rd, 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.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of heavy forklift sling hydraulic pressure control system, and it has
Effect solves existing fork truck valve rod and manipulates the difficult hydraulic operation controlled on suspender, and the manipulation of common valve rod does not have safeguard protection work(
Can, then in the presence of certain potential safety hazard, hydraulic oil backflow oil temperature height etc. is above-mentioned needed for fork truck has problem.
Technical problem to be solved in the utility model is realized using following technical scheme：
A kind of heavy forklift sling hydraulic pressure control system, 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 banked direction control valves includes in parallel rotation lock control valve and lift control valve, the execution unit include 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；
Wherein, suspender fuel feeding magnetic valve and hydraulic lock are provided between the rotation lock control valve and rotation lock oil cylinder；And suspender tapered end is provided with and used
In obtain suspender tapered end grasping movement case sensor, rotation lock oil cylinder be provided be used for obtain suspender tapered end rotation lock action rotation
Lock sensor；And provided with governor valve between the lift control valve and lift oil tank and by rotation lock sensor feedback control action
Unloading valve.
The utility model further improvement is that：The banked direction control valves includes the tilt control valve being connected in parallel；The execution
Part 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 the sidesway control valve being connected in parallel；The execution
Part 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 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 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：This kind of heavy forklift sling hydraulic pressure control system, provided with suspender tapered end monitor component,
Then in the course of work, rotation lock can be avoided to carry out the action of door frame raising in the case of not hanging tightly, improve security；And its cost
It is low, the suspender function of diversification is realized on most basic forklift hydraulic system platform；Lift maintainability simultaneously, reduce hydraulic pressure
System oil temperature, lift vehicle Work Reliability of Hydraulic System；Safety protection function is more simple and reliable, meets the peace under different operating modes
Full demand.
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 heavy forklift sling hydraulic pressure control system, 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 banked direction control valves 15 includes rotation lock control valve 151 and lift control valve 152, and institute
State to use between rotation lock control valve 151 and lift control valve 152 and be connected in parallel；The execution unit includes rotation lock oil cylinder 12 and risen
Oil-lifting jar 8, and the rotation lock oil cylinder 12 is located at lift control valve located at the delivery outlet of rotation lock control valve 151, the lift oil tank 8
152 delivery outlets；Suspender fuel feeding magnetic valve 14 and hydraulic lock 13 are provided between the rotation lock control valve and rotation lock oil cylinder；Wherein, hang
Tool tapered end be provided be used to obtaining suspender tapered end grasping movement case sensor, and case sensor obtain suspender tapered end crawl letter
Breath 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
It is provided with the rotation lock sensor for being used for obtaining the rotation lock action of suspender tapered end；And between the lift control valve 152 and lift oil tank 8
Unloading valve 6 provided with governor valve 7 and by rotation lock sensor feedback control action, wherein, rotation lock sensor obtains the rotation of suspender tapered end
The action of lock information, then feedback control unloading valve 6.
Specially：A4, B4 mouth of banked direction control valves 15 connect the FP mouths of suspender fuel feeding magnetic valve 14, FT mouths, hydraulic lock 13 respectively
With suspender fuel feeding magnetic valve 14 on the suspender, on suspender fuel feeding magnetic valve 14 FA, FB respectively with Y1, Y2 in hydraulic lock 13
It is connected, Y3, Y4 in hydraulic lock 13 are connected with the corresponding end of rotation lock oil cylinder 12；
The XP mouths of unloading valve 6 are connected with the B1 mouths of banked direction control valves 15, the S1 mouths of the XA mouths connection governor valve of unloading valve 6, are unloaded
The XT mouths of lotus 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 rotation lock sensing
Also attonity, unloading valve 6 start off-load action, main system off-load to device；Now enter lift oil tank 8 without fluid, do not allowed
Rise；The S2 mouths of governor valve 7 are directly connected to lift oil tank 8, and governor valve 7 controls the reasonable decline of goods, and regulation meets fully loaded door frame
Decrease speed between 300-600mm/s.
The banked direction control valves 15 also includes the tilt control valve 154 being connected 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
Rod 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, before controlling door frame
Rear-inclined.
The banked direction control valves 15 also includes the sidesway control valve 153 being connected 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.Between the sidesway control valve 153 and sidesway oil cylinder 10
Provided with 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 and banked direction control valves of flow speed control valve 9
15 A3 mouths connection, 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
Rodless cavity, the rod chamber of the T3 mouths connection sidesway oil cylinder 10 of flow speed control valve 9.
The oil return line of the banked direction control valves 15 is provided with radiator 4 and back pressure check valve 5, and the back pressure check valve 5 and radiating
Device 4 is in parallel：The S2 ends of radiator 4 and the D1 ends of back pressure check valve 5 are connected with the DT mouths of banked direction control valves 15, back pressure check valve 5
D2 ends are connected with the S1 ends of radiator 4, and the S1 ends of radiator 4 communicate with hydraulic oil container 1.Then it can realize and be flowed back in the system
High-temperature oil liquid through the cooling of radiator 4 handle；Back pressure check valve 5 ensures that the oil return of banked direction control valves 15 has the fluid of certain flow by dissipating
Hot device 4, when the back pressure of radiator 4 is higher, back pressure check valve 5 opens fluid pressure release, to protect radiator 4 not damaged by high pressure.
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 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 is just so that sidesway action more
At the uniform velocity, more steadily, it is 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.
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.
The utility model provides a kind of heavy forklift sling hydraulic pressure control system, 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 (8)
1. a kind of heavy forklift sling hydraulic pressure control system, 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 banked direction control valves includes rotation lock control valve and lift control valve in parallel, and the execution unit includes rotation
Oil cylinder and lift oil tank are locked, and the rotation lock oil cylinder is located at lift control located at rotation lock control valve delivery outlet, the lift oil tank
Valve delivery outlet；Wherein, suspender fuel feeding magnetic valve and hydraulic lock are provided between the rotation lock control valve and rotation lock oil cylinder；And suspender is locked
Head be provided be used for obtain suspender tapered end grasping movement case sensor, rotation lock oil cylinder be provided be used for obtain suspender tapered end rotation lock
The rotation lock sensor of action；And governor valve is provided between the lift control valve and lift oil tank and is fed back by rotation lock sensor and is controlled
Brake the unloading valve made.
A kind of 2. heavy forklift sling hydraulic pressure control system according to claim 1, it is characterised in that：The banked direction control valves bag
Include the tilt control valve being connected in parallel；The execution unit also includes dump ram, and the dump ram is located at inclination control
Valve delivery outlet.
A kind of 3. heavy forklift sling hydraulic pressure control system according to claim 1, it is characterised in that：The banked direction control valves bag
Include the sidesway control valve being connected in parallel；The execution unit also includes sidesway oil cylinder, and the sidesway oil cylinder controls located at sidesway
Valve delivery outlet.
A kind of 4. heavy forklift sling hydraulic pressure control system according to claim 3, it is characterised in that：The sidesway control
Flow speed control valve is provided between valve and sidesway oil cylinder.
A kind of 5. heavy forklift sling hydraulic pressure control system according to Claims 2 or 3, it is characterised in that：The multichannel
The oil return line of valve is provided with radiator and back pressure check valve, and the back pressure check valve is in parallel with radiator.
A kind of 6. heavy forklift sling hydraulic pressure control system according to claim 1, it is characterised in that：The control hydraulic pressure system
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 output
Mouth connection steering cylinder.
A kind of 7. heavy forklift sling hydraulic pressure control system according to claim 6, it is characterised in that：The steering gear
Oil return line is provided with return filter.
A kind of 8. heavy forklift sling hydraulic pressure control system 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 |
|---|---|---|---|
| CN201720402592.9U CN206751322U (en) | 2017-04-18 | 2017-04-18 | A kind of heavy forklift sling hydraulic pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720402592.9U CN206751322U (en) | 2017-04-18 | 2017-04-18 | A kind of heavy forklift sling hydraulic pressure control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206751322U true CN206751322U (en) | 2017-12-15 |
Family
ID=60613109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720402592.9U Active CN206751322U (en) | 2017-04-18 | 2017-04-18 | A kind of heavy forklift sling hydraulic pressure control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206751322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904558A (en) * | 2017-04-18 | 2017-06-30 | 安徽合力股份有限公司 | A kind of heavy forklift sling hydraulic pressure control system |
| CN110603384A (en) * | 2018-03-28 | 2019-12-20 | 株式会社日立建机Tierra | Hydraulic drive device for construction machine |
-
2017
- 2017-04-18 CN CN201720402592.9U patent/CN206751322U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904558A (en) * | 2017-04-18 | 2017-06-30 | 安徽合力股份有限公司 | A kind of heavy forklift sling hydraulic pressure control system |
| CN106904558B (en) * | 2017-04-18 | 2023-07-28 | 安徽合力股份有限公司 | Hydraulic control system for lifting appliance of heavy forklift |
| CN110603384A (en) * | 2018-03-28 | 2019-12-20 | 株式会社日立建机Tierra | Hydraulic drive device for construction machine |
| CN110603384B (en) * | 2018-03-28 | 2021-02-23 | 株式会社日立建机Tierra | Hydraulic drive device for construction machine |
| US11214940B2 (en) | 2018-03-28 | 2022-01-04 | Hitachi Construction Machinery Tierra Co., Ltd. | Hydraulic drive system for construction machine |
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