CN110255444A - The stabilizer blade control device of Side Fork Lift Trucks - Google Patents
The stabilizer blade control device of Side Fork Lift Trucks Download PDFInfo
- Publication number
- CN110255444A CN110255444A CN201910518855.6A CN201910518855A CN110255444A CN 110255444 A CN110255444 A CN 110255444A CN 201910518855 A CN201910518855 A CN 201910518855A CN 110255444 A CN110255444 A CN 110255444A
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- China
- Prior art keywords
- control valve
- pilot operated
- directional control
- operated directional
- mouth
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Classifications
-
- 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/07559—Stabilizing means
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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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
A kind of stabilizer blade control device of Side Fork Lift Trucks, including hand-operated direction valve, fuel tank, hydraulic pump, stabilizer blade oil cylinder, the first pilot operated directional control valve, the second pilot operated directional control valve and third pilot operated directional control valve；The oil outlet of hydraulic pump is connected to the oil inlet P of the oil inlet P of hand-operated direction valve and the second pilot operated directional control valve respectively；The execution mouth A of hand-operated direction valve is connected to the control mouth K of the first oil inlet P 1 of the first pilot operated directional control valve and the first pilot operated directional control valve respectively；The execution mouth A of second pilot operated directional control valve is connected to the second oil inlet P 2 of the first pilot operated directional control valve；The execution mouth A of first pilot operated directional control valve is connected to the rodless cavity of stabilizer blade oil cylinder；The execution mouth A of third pilot operated directional control valve is connected to the control mouth K of the second pilot operated directional control valve.Side Fork Lift Trucks can be achieved in the present invention, and hanging forward gear or retreating gear, stabilizer blade oil cylinder is packed up automatically when driving.
Description
Technical field
The present invention relates to a kind of Side Fork Lift Trucks, in particular to the stabilizer blade control device of a kind of Side Fork Lift Trucks.
Background technique
Door frame, lifting mechanism and the pallet fork of Side Fork Lift Trucks are located at the middle part of fork truck, can move along cross slide way.Pallet fork
Positioned at the side of fork truck, there are also a cargo stages for side.When pallet fork rises above cargo stage height along door frame, door frame
It is retracted along guide rail, falls pallet fork, cargo is just placed on the cargo stage of Side Fork Lift Trucks.The door frame and pallet fork of Side Fork Lift Trucks are in vehicle
Body side.When Side Fork Lift Trucks stops travelling and starting raising cargo, need stabilizer blade oil cylinder being supported in ground, so as in raising
Play the role of promoting lateral stability when cargo.Side Fork Lift Trucks hangs forward gear or retreating gear when driving, it is necessary to by stabilizer blade oil
Cylinder is packed up.But in actual operation, often occur to hang forward gear or retreating gear when driving, driver does not pack up stabilizer blade oil cylinder
The case where, there can be serious security risk in this way.The stabilizer blade control device of the Side Fork Lift Trucks of the prior art is as shown in Fig. 2, packet
Fuel tank 35, hydraulic pump 30, stabilizer blade oil cylinder 32 and hand-operated direction valve 31 are included, stabilizer blade oil cylinder 32 uses Chinese patent literature
CN204355992U(application number 201420834521.2) disclosed in a kind of horizontal extension support oil cylinder linkage locking of loop wheel machine
The oil inlet of support oil cylinder in device, hydraulic pump 30 is connected to fuel tank 35, the oil outlet and hand-operated direction valve 31 of hydraulic pump 30
Oil inlet P connection, the executions mouth A of hand-operated direction valve 31 is connected to the rodless cavity of stabilizer blade oil cylinder 32, hand-operated direction valve 31 out
Hydraulic fluid port T is connected to fuel tank 35.When driver is stopped and starts raising cargo, need stabilizer blade oil cylinder 32 being supported in ground, this
When need to only operate hand-operated direction valve 31, make the oil inlet P of hand-operated direction valve 31 with execute mouth A communicate, the pressure in hydraulic pump 30
Oil enters the rodless cavity of stabilizer blade oil cylinder 32, and the piston rod of stabilizer blade oil cylinder 32 stretches out, and the piston rod of stabilizer blade oil cylinder 32 is made to be supported in ground
Face.When fork truck hangs forward gear or retreating gear when driving, stabilizer blade oil cylinder 32 need to be packed up, at this moment operate hand-operated direction valve 31, make hand
The execution mouth A and oil outlet T-phase of dynamic reversal valve 31 are logical, and the pressure oil in the rodless cavity of stabilizer blade oil cylinder 32 is after hand-operated direction valve 31
Fuel tank 35 is reached, the rodless cavity of stabilizer blade oil cylinder 32 does not have pressure oil, and under the action of the spring, the piston rod of stabilizer blade oil cylinder 32 contracts
It returns, the piston rod of stabilizer blade oil cylinder 32 leaves ground.The stabilizer blade control device of this Side Fork Lift Trucks hangs forward gear or retreating gear row
When sailing, stabilizer blade oil cylinder 32 will not be packed up automatically, can thus there is serious security risk.
Summary of the invention
It is an object of the invention to propose a kind of extension forward gear or the retreating gear side that stabilizer blade oil cylinder can be packed up automatically when driving
The stabilizer blade control device of face fork truck.
In order to achieve the above objectives, the present invention adopts the following technical scheme that: a kind of stabilizer blade control device of Side Fork Lift Trucks, including
Hand-operated direction valve, fuel tank, hydraulic pump and stabilizer blade oil cylinder；The oil inlet of the hydraulic pump is connected to fuel tank.
It further include the first pilot operated directional control valve, the second pilot operated directional control valve and third pilot operated directional control valve；The hydraulic pump it is fuel-displaced
Mouth is connected to the oil inlet P of the oil inlet P of hand-operated direction valve and the second pilot operated directional control valve respectively；The execution of the hand-operated direction valve
Mouth A is connected to the control mouth K of the first oil inlet P 1 of the first pilot operated directional control valve and the first pilot operated directional control valve respectively；When the first hydraulic control
When the control mouth K of reversal valve is passed through pressure oil, the second oil inlet P 2 of the first pilot operated directional control valve is communicated with mouth A is executed；Described
The execution mouth A of two pilot operated directional control valves is connected to the second oil inlet P 2 of the first pilot operated directional control valve；First pilot operated directional control valve
Mouth A is executed to be connected to the rodless cavity of stabilizer blade oil cylinder；The control of execution the mouth A and the second pilot operated directional control valve of the third pilot operated directional control valve
Donsole K connection；When the control mouth K of the second pilot operated directional control valve is not passed through pressure oil, the oil inlet P of the second pilot operated directional control valve with
It executes mouth A to communicate, in use, the first oil inlet P 1 of the third pilot operated directional control valve is connected to the execution mouth A of block selecting operation valve
To the oily channel of forward gear clutch, the control mouth of the second oil inlet P 2 and third pilot operated directional control valve of third pilot operated directional control valve
K is both connected on the execution mouth B to the oily channel of retreating gear clutch of block selecting operation valve；When the control mouth of third pilot operated directional control valve
When K is passed through pressure oil, the second oil inlet P 2 of third pilot operated directional control valve is communicated with mouth A is executed.
The fuel tank to hydraulic pump oil inlet oily channel be equipped with filter.
The oil outlet of the hydraulic pump to the oily channel of fuel tank is equipped with safety valve.
The present invention have following good effect: 1), due to hydraulic pump of the invention oil outlet respectively with hand-operated direction valve
Oil inlet P be connected to the oil inlet P of the second pilot operated directional control valve；The execution mouth A of hand-operated direction valve respectively with the first liquid controlled reversing
First oil inlet P 1 of valve is connected to the control mouth K of the first pilot operated directional control valve；The execution mouth A and the first liquid of second pilot operated directional control valve
Control the second oil inlet P 2 connection of reversal valve；The execution mouth A of first pilot operated directional control valve is connected to the rodless cavity of stabilizer blade oil cylinder；Third
The execution mouth A of pilot operated directional control valve is connected to the control mouth K of the second pilot operated directional control valve；When the control mouth K of the second pilot operated directional control valve does not have
When being passed through pressure oil, the oil inlet P of the second pilot operated directional control valve is communicated with mouth A is executed, in use, the of third pilot operated directional control valve
One oil inlet P 1 is connected on the execution mouth A to the oily channel of forward gear clutch of block selecting operation valve, third pilot operated directional control valve
The control mouth K of second oil inlet P 2 and third pilot operated directional control valve is both connected to the execution mouth B of block selecting operation valve to retreating gear clutch
On the oily channel of device, thus when driver is before Side Fork Lift Trucks needs to travel, when forgetting to pack up stabilizer blade oil cylinder, i.e. manual reverse of direction
The oil inlet P of valve is still communicated with mouth A is executed, and the control mouth K of the first pilot operated directional control valve is passed through pressure oil, the first pilot operated directional control valve
The second oil inlet P 2 with execute mouth A communicate, the piston rod of stabilizer blade oil cylinder still stretch out state.When driver hang forward gear or after
Move back gear when driving, at this moment the oil inlet P of shift control valve with execute mouth A communicate or the oil inlet P of shift control valve with execution mouth
B is communicated, and at this moment the first oil inlet P 1 of third pilot operated directional control valve communicates or the second oil inlet of third pilot operated directional control valve with mouth A is executed
Mouth P2 is communicated with mouth A is executed, the execution mouth B that executes mouth A or shift control valve of the pressure oil in hydraulic pump through shift control valve
Enter the control mouth K of the second pilot operated directional control valve through third pilot operated directional control valve again, the control mouth K of the second pilot operated directional control valve is passed through pressure
Oil, the execution mouth A and oil outlet T-phase of the second pilot operated directional control valve are logical, and the pressure oil of the rodless cavity of stabilizer blade oil cylinder is changed through the first hydraulic control
Fuel tank is returned to through the second pilot operated directional control valve again to the second oil inlet P 2 of valve, the effect of the piston rod of such stabilizer blade oil cylinder in spring
Can retract, stabilizer blade oil cylinder leaves ground, i.e., when Side Fork Lift Trucks hangs over forward gear or retreating gear, stabilizer blade oil cylinder can be automatic
It packs up, security risk is just not present.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the schematic diagram of the stabilizer blade control device of the prior art；
Fig. 3 is the schematic diagram of the stopping device of the prior art；
Fig. 4 is the schematic diagram after the present invention is connect with the stopping device of vehicle.
Appended drawing reference in above-mentioned attached drawing is as follows: the first pilot operated directional control valve 1, the second pilot operated directional control valve 2, third liquid controlled reversing
Valve 3, hydraulic pump 30, hand-operated direction valve 31, stabilizer blade oil cylinder 32, filter 34, fuel tank 35, safety valve 36, shift control valve 40, behaviour
Vertical pole 40-1, forward gear clutch 41, retreating gear clutch 42.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated.
As shown in Figure 1, a kind of stabilizer blade control device of Side Fork Lift Trucks, including hand-operated direction valve 31, fuel tank 35, hydraulic pump 30
With stabilizer blade oil cylinder 32；The oil inlet of the hydraulic pump 30 is connected to fuel tank 35.
It further include the first pilot operated directional control valve 1, the second pilot operated directional control valve 2 and third pilot operated directional control valve 3；The hydraulic pump 30
Oil outlet is connected to the oil inlet P of the oil inlet P of hand-operated direction valve 31 and the second pilot operated directional control valve 2 respectively；The manual reverse of direction
The execution mouth A of valve 31 connects with the control mouth K of the first oil inlet P 1 of the first pilot operated directional control valve 1 and the first pilot operated directional control valve 1 respectively
It is logical；When the control mouth K of the first pilot operated directional control valve 1 is passed through pressure oil, the second oil inlet P 2 and the execution of the first pilot operated directional control valve 1
Mouth A is communicated；When the control mouth K of the first pilot operated directional control valve 1 is not passed through pressure oil, the first oil inlet of the first pilot operated directional control valve 1
Mouth P1 is communicated with mouth A is executed.The second oil inlet P 2 of execution the mouth A and the first pilot operated directional control valve 1 of second pilot operated directional control valve 2
Connection；The execution mouth A of first pilot operated directional control valve 1 is connected to the rodless cavity of stabilizer blade oil cylinder 32；The third pilot operated directional control valve 3
Execution mouth A be connected to the control mouth K of the second pilot operated directional control valve 2；When the control mouth K of the second pilot operated directional control valve 2 is not passed through pressure
When power oil, the oil inlet P of the second pilot operated directional control valve 2 is communicated with mouth A is executed, when the control mouth K of the second pilot operated directional control valve 2 is passed through pressure
When power oil, the execution mouth A and oil outlet T-phase of the second pilot operated directional control valve 2 are logical.The oil return inlet T and second of the hand-operated direction valve 31
The oil return inlet T of pilot operated directional control valve 2 is connected to fuel tank 35；As shown in figure 4, in the use of the present invention, needing and the gear on vehicle
Position device is used cooperatively, and the stopping device of the prior art is as shown in figure 3, include shift control valve 40,41 and of forward gear clutch
Retreating gear clutch 42, shift control valve 40 include control stick 40-1, the oil inlet P of shift control valve 40 and going out for hydraulic pump 30
Hydraulic fluid port connection, the execution mouth A of shift control valve 40 are connected to forward gear clutch 41, and the execution mouth B of shift control valve 40 is with after
It moves back gear clutch 42 to be connected to, the control stick 40-1 of shift control valve 40 is connected by flexible axle with the gear selector for being located at driver's cabin
It connects.When driver's operation is located at the gear selector of driver's cabin, it is allowed to hang on forward gear, flexible axle drives shift control valve 40
Control stick 40-1 movement communicates the oil inlet P of shift control valve 40 with mouth A is executed, before the pressure oil in hydraulic pump 30 enters
Into gear clutch 41, forward gear clutch 41 is in bonding state, and in conjunction with advance shaft, vehicle can advance line shaft.When driving
The gear selector that the person's of sailing operation is located at driver's cabin is allowed to hang in retreating gear, the oil inlet P and execution mouth B of shift control valve 40
It communicates, retreating gear clutch 42 is in bonding state, and in conjunction with retrogressing axis, vehicle can retreat line shaft.When driver operates
It is allowed to hang in neutral gear positioned at the gear selector of driver's cabin, the oil inlet P and execution mouth A and execution mouth B of shift control valve 40
Be not communicated with, forward gear clutch 41 and retreating gear clutch 42 are in discrete state, and vehicle can neither advance, can not after
It moves back.As shown in figure 4, in use, the first oil inlet P 1 of the third pilot operated directional control valve 3 is connected to the execution of block selecting operation valve 60
On mouthful A to the oily channel of forward gear clutch 61, i.e. the first oil inlet P 1 and block selecting operation valve 60 of third pilot operated directional control valve 3
The oily channel for executing mouth A to forward gear clutch 61 communicates.Second oil inlet P 2 of third pilot operated directional control valve 3 and third hydraulic control are changed
On the execution mouth B to the oily channel of retreating gear clutch 62 for being both connected to block selecting operation valve 60 to the control mouth K of valve 3；That is third
The control mouth K of second oil inlet P 2 of pilot operated directional control valve 3 and third pilot operated directional control valve 3 with the execution mouth B of block selecting operation valve 60
It is communicated to the oily channel of retreating gear clutch 62.When the control mouth K of third pilot operated directional control valve 3 is passed through pressure oil, third hydraulic control
Second oil inlet P 2 of reversal valve 3 is communicated with mouth A is executed.When the control mouth K of third pilot operated directional control valve 3 is not passed through pressure oil
When, the first oil inlet P 1 of third pilot operated directional control valve 3 is communicated with mouth A is executed.
The fuel tank 35 to hydraulic pump 30 oil inlet oily channel be equipped with filter 34.
The oil outlet of the hydraulic pump 30 to the oily channel of fuel tank 35 is equipped with safety valve 36.
Working principle of the present invention is as follows: under normal circumstances, driver is stopping that vehicle neutral gear can be hung over when driving
On, i.e., shift control valve 40 can be operated, is not communicated with the oil inlet P of shift control valve 40 with execution mouth A and execution mouth B, this
When third pilot operated directional control valve 3 the first oil inlet P 1 and the second oil inlet P 2 will not be passed through pressure oil, third pilot operated directional control valve 3
Execution mouth A there will not be pressure oil, the control mouth K of such second pilot operated directional control valve 2 there will not be pressure oil, and the second hydraulic control is changed
It is communicated to the oil inlet P of valve 2 with mouth A is executed.When starting raising cargo, stabilizer blade oil cylinder 32 can be supported in ground by driver, i.e.,
Driver can operate hand-operated direction valve 31, communicate the oil inlet P of hand-operated direction valve 31 with mouth A is executed, such first hydraulic control is changed
It is passed through pressure oil to the control mouth K of valve 1, the second oil inlet P 2 of the first pilot operated directional control valve 1 is communicated with mouth A is executed, hydraulic pump 30
In pressure oil through the second pilot operated directional control valve 2, the second oil inlet P 2 through the first pilot operated directional control valve 1 enters stabilizer blade oil cylinder 32 again
The piston rod of rodless cavity, stabilizer blade oil cylinder 32 stretches out, and the piston rod of stabilizer blade oil cylinder 32 is made to be supported in ground.
Under normal circumstances, when Side Fork Lift Trucks needs when driving, to pack up stabilizer blade oil cylinder 32, i.e., driver can operate manually
Reversal valve 31 keeps the execution mouth A of hand-operated direction valve 31 and oil outlet T-phase logical, and at this moment the control mouth K of the first pilot operated directional control valve 1 does not have
It is passed through pressure oil, the first oil inlet P 1 of the first pilot operated directional control valve 1 is communicated with mouth A is executed, in the rodless cavity of stabilizer blade oil cylinder 32
Pressure oil through the first pilot operated directional control valve 1, the execution mouth A through hand-operated direction valve 31 returns to fuel tank 35 again, stabilizer blade oil cylinder 32 without bar
Chamber does not have pressure oil, and under the action of the spring of stabilizer blade oil cylinder 32, the piston rod of stabilizer blade oil cylinder 32 is retracted, the work of stabilizer blade oil cylinder 32
Stopper rod leaves ground, and stabilizer blade oil cylinder 32 is packed up.
As shown in figure 4, forgetting to pack up stabilizer blade oil cylinder 32, i.e., changing manually when driver is before Side Fork Lift Trucks needs to travel
It is still communicated to the oil inlet P of valve 31 with mouth A is executed, the control mouth K of the first pilot operated directional control valve 1 is passed through pressure oil, the first hydraulic control
Second oil inlet P 2 of reversal valve 1 is communicated with mouth A is executed, and the piston rod of stabilizer blade oil cylinder 32 is still in the state of stretching.When driver hangs
When driving, at this moment the oil inlet P of shift control valve 40 communicates forward gear with mouth A is executed, before the pressure oil in hydraulic pump 30 enters
Into gear clutch 41, at this moment the control mouth K of third pilot operated directional control valve 3 is not passed through pressure oil, and the first of third pilot operated directional control valve 3
Oil inlet P 1 is communicated with mouth A is executed.Pressure oil in hydraulic pump 30 is changed through third hydraulic control again through the execution mouth A of shift control valve 40
Enter the control mouth K of the second pilot operated directional control valve 2 to the first oil inlet P 1 of valve 3, the control mouth K of the second pilot operated directional control valve 2 is passed through
Pressure oil, the execution mouth A and oil outlet T-phase of the second pilot operated directional control valve 2 are logical, and the pressure oil of the rodless cavity of stabilizer blade oil cylinder 32 is through first
Second oil inlet P 2 of pilot operated directional control valve 1 returns to fuel tank 35, the piston rod of such stabilizer blade oil cylinder 32 through the second pilot operated directional control valve 2 again
It can be retracted in the effect of spring, stabilizer blade oil cylinder 32 leaves ground, i.e., when Side Fork Lift Trucks hangs over forward gear, stabilizer blade oil cylinder 32
It can pack up automatically, just hang forward gear row when driver forgets to pack up stabilizer blade oil cylinder 32 before Side Fork Lift Trucks needs to travel in this way
When sailing, security risk is just not present.
When driver Side Fork Lift Trucks need travel before, forget to pack up stabilizer blade oil cylinder 32, i.e., hand-operated direction valve 31 into
Hydraulic fluid port P is still communicated with mouth A is executed, and the control mouth K of the first pilot operated directional control valve 1 is passed through pressure oil, and the of the first pilot operated directional control valve 1
Two oil inlet Ps 2 are communicated with mouth A is executed, and the piston rod of stabilizer blade oil cylinder 32 is still in the state of stretching, when driver hangs retreating gear traveling
When, at this moment the oil inlet P of shift control valve 40 is communicated with mouth B is executed, and the pressure oil in hydraulic pump 30 enters retreating gear clutch
42, at this moment the control mouth K of third pilot operated directional control valve 3 is passed through pressure oil, the second oil inlet P 2 and the execution of third pilot operated directional control valve 3
Mouth A is communicated.Execution mouth B of the pressure oil through shift control valve 40 in hydraulic pump 30 again through third pilot operated directional control valve 3 second into
The control mouth K, the control mouth K of the second pilot operated directional control valve 2 that hydraulic fluid port P2 enters the second pilot operated directional control valve 2 are passed through pressure oil, the second liquid
Execution mouth A and the oil outlet T-phase for controlling reversal valve 2 are logical, and the pressure oil of the rodless cavity of stabilizer blade oil cylinder 32 is through the first pilot operated directional control valve 1
Second oil inlet P 2 returns to fuel tank 35 through the second pilot operated directional control valve 2 again, the effect of the piston rod of such stabilizer blade oil cylinder 32 in spring
Under can retract, stabilizer blade oil cylinder 32 leaves ground, i.e., when Side Fork Lift Trucks hangs over retreating gear, stabilizer blade oil cylinder 32 can be received automatically
It rises, just hangs retreating gear when driving when driver forgets to pack up stabilizer blade oil cylinder 32 before Side Fork Lift Trucks needs to travel in this way, just not
There are security risks.
Claims (3)
1. a kind of stabilizer blade control device of Side Fork Lift Trucks, including hand-operated direction valve (31), fuel tank (35), hydraulic pump (30) and stabilizer blade
Oil cylinder (32)；The oil inlet of the hydraulic pump (30) is connected to fuel tank (35), it is characterised in that:
It further include the first pilot operated directional control valve (1), the second pilot operated directional control valve (2) and third pilot operated directional control valve (3)；The hydraulic pump
(30) oil outlet is connected to the oil inlet P of the oil inlet P of hand-operated direction valve (31) and the second pilot operated directional control valve (2) respectively；Institute
State the execution mouth A of hand-operated direction valve (31) respectively with the first oil inlet P 1 of the first pilot operated directional control valve (1) and the first liquid controlled reversing
The control mouth K of valve (1) is connected to；When the control mouth K of the first pilot operated directional control valve (1) is passed through pressure oil, the first pilot operated directional control valve (1)
The second oil inlet P 2 with execute mouth A communicate；The execution mouth A and the first pilot operated directional control valve (1) of second pilot operated directional control valve (2)
The second oil inlet P 2 connection；The execution mouth A of first pilot operated directional control valve (1) is connected to the rodless cavity of stabilizer blade oil cylinder (32)；
The execution mouth A of the third pilot operated directional control valve (3) is connected to the control mouth K of the second pilot operated directional control valve (2)；When the second liquid controlled reversing
When the control mouth K of valve (2) is not passed through pressure oil, the oil inlet P of the second pilot operated directional control valve (2) is communicated with mouth A is executed, and is used
When, the first oil inlet P 1 of the third pilot operated directional control valve (3) be connected to the execution mouth A of block selecting operation valve (60) to forward gear from
On the oily channel of clutch (61), the second oil inlet P 2 of third pilot operated directional control valve (3) and the control mouth of third pilot operated directional control valve (3)
K is both connected on the execution mouth B to the oily channel of retreating gear clutch (62) of block selecting operation valve (60)；When third pilot operated directional control valve
(3) when control mouth K is passed through pressure oil, the second oil inlet P 2 of third pilot operated directional control valve (3) is communicated with mouth A is executed.
2. the stabilizer blade control device of Side Fork Lift Trucks according to claim 1, it is characterised in that: the fuel tank (35) is extremely hydraulic
The oily channel for pumping the oil inlet of (30) is equipped with filter (34).
3. the stabilizer blade control device of Side Fork Lift Trucks according to claim 1, it is characterised in that: the hydraulic pump (30) goes out
Hydraulic fluid port to the oily channel of fuel tank (35) is equipped with safety valve (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518855.6A CN110255444A (en) | 2019-06-16 | 2019-06-16 | The stabilizer blade control device of Side Fork Lift Trucks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910518855.6A CN110255444A (en) | 2019-06-16 | 2019-06-16 | The stabilizer blade control device of Side Fork Lift Trucks |
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| Publication Number | Publication Date |
|---|---|
| CN110255444A true CN110255444A (en) | 2019-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910518855.6A Pending CN110255444A (en) | 2019-06-16 | 2019-06-16 | The stabilizer blade control device of Side Fork Lift Trucks |
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| CN (1) | CN110255444A (en) |
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| CN110966271A (en) * | 2019-12-24 | 2020-04-07 | 袁菊花 | Stabilizer blade hydro-cylinder controlling means of side fork truck |
| CN113830169A (en) * | 2021-11-26 | 2021-12-24 | 徐工集团工程机械股份有限公司科技分公司 | Safe hydraulic steering system and control method thereof |
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| CN108466977A (en) * | 2018-06-29 | 2018-08-31 | 刘剑 | The stabilizer blade cylinder control device of Side Fork Lift Trucks |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966271A (en) * | 2019-12-24 | 2020-04-07 | 袁菊花 | Stabilizer blade hydro-cylinder controlling means of side fork truck |
| CN113830169A (en) * | 2021-11-26 | 2021-12-24 | 徐工集团工程机械股份有限公司科技分公司 | Safe hydraulic steering system and control method thereof |
| CN113830169B (en) * | 2021-11-26 | 2022-03-04 | 徐工集团工程机械股份有限公司科技分公司 | Safe hydraulic steering system and control method thereof |
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