CN206307938U - Winch hydraulic control system - Google Patents
Winch hydraulic control system Download PDFInfo
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- CN206307938U CN206307938U CN201621432923.5U CN201621432923U CN206307938U CN 206307938 U CN206307938 U CN 206307938U CN 201621432923 U CN201621432923 U CN 201621432923U CN 206307938 U CN206307938 U CN 206307938U
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Abstract
The utility model belongs to field of hydraulic control, and in particular to a kind of winch hydraulic control system for winch action control.In order to solve current conventional hydraulic control system when action control is carried out to winch, cannot be completed to entering the problem that hydraulic motor flow is controlled by controlling the amount of opening of reversal valve due to the unstable of extraneous load, the utility model discloses a kind of winch hydraulic control system.The winch hydraulic control system, including hydraulic pump, hydraulic motor and fuel tank, main reversing valve, bypass recuperation valve, pressure-reducing valve, the first pilot control valve group and the first shuttle valve.Winch hydraulic control system disclosed in the utility model, by the first shuttle valve and the cooperation for bypassing recuperation valve, it is controlled into the fluid flow of hydraulic motor to flowing through main reversing valve, so that the fluid flow into hydraulic motor is only relevant with the valve core opening amount of main reversing valve, and it is unrelated with the change of extraneous load, so as to improve the accuracy and reliability to flow system flow control.
Description
Technical field
The utility model belongs to field of hydraulic control, and in particular to a kind of winch hydraulic control for winch action control
System.
Background technology
Winch be it is a kind of lifted by reel lay winding wire ropes or chain or traction work small-sized lifting
Equipment.Winch can be to be used alone, it is also possible to as lifting, build the road and the building block in the machinery such as mine hoisting.Because
Its is simple to operate, wiring amount is big, dislocation convenient and extensive use, mainly applies to building, hydraulic engineering, forestry, mining industry, harbour
Lifted Deng material or put down and dragged.
At present, at sea hydraulic motor is rotated generally by hydraulic control system in the anchor strand equipment of platform
Control, is then acted by fluid motor-driven winch, so as to complete the operation casting anchor and unmoor and other are related to winch
Operation.However, in existing conventional hydraulic control system, mainly by adjusting the opening of main reversing valve in hydraulic system
Amount, the fluid flow that control passes through reversal valve so as to control the fluid flow entered in hydraulic motor, that is, controls hydraulic motor
Output speed.
But, found in real work, because the working environment of offshore platform is complicated, winch be often subject to it is various cannot
The external active force expected, such as stormy waves.The load of the load of the conventional hydraulic control system, i.e. hydraulic motor is so caused to pass through
Often change.By valve port formula：Understand, wherein, q is by the fluid flow of hydraulic valve, CqIt is fluid
Discharge coefficient, A for hydraulic valve valve port open area, Δ p for hydraulic valve valve port pressure at two ends it is poor, ρ be fluid density.
In the case where fluid is constant, CqIt is Fixed constant with ρ.Now the valve port open area A in hydraulic valve keeps constant situation
Under, when the valve port pressure at two ends difference Δ p of hydraulic valve changes, also changed by the fluid flow q of hydraulic valve.Therefore,
In the case where external world's load is unstable, the valve port pressure at two ends difference Δ p of hydraulic valve can also change, now conventional hydraulic control
System processed cannot be realized controlling the flow by reversal valve by controlling the amount of opening of reversal valve merely, i.e., uncontrollable entrance
The fluid flow of hydraulic motor.
Utility model content
In order to solve current conventional hydraulic control system when action control is carried out to winch, due to the shakiness of extraneous load
Determine and cannot be completed to entering the problem that hydraulic motor flow is controlled by controlling the amount of opening of reversal valve, the utility model proposes
A kind of winch hydraulic control system.The winch hydraulic control system, including hydraulic pump, hydraulic motor and fuel tank, main reversing valve,
Bypass recuperation valve, pressure-reducing valve, the first pilot control valve group and the first shuttle valve；Wherein,
The inlet port of the hydraulic pump is connected with the fuel tank, the oil-out of the hydraulic pump simultaneously with the main reversing valve
Oil inlet, the oil inlet of the bypass recuperation valve and the pressure-reducing valve oil inlet connection；
The oil return opening of the main reversing valve is connected with the fuel tank, two actuator ports of the main reversing valve respectively with institute
State being connected into and out of hydraulic fluid port for hydraulic motor；
The oil-out of the bypass recuperation valve be connected with the fuel tank, the control port for bypassing recuperation valve and described the
The oil-out connection of one shuttle valve；
The oil-out of the pressure-reducing valve is connected with the oil inlet of the first pilot control valve group；
The oil return opening of the first pilot control valve group is connected with the fuel tank, the work of the first pilot control valve group
Hydraulic fluid port is connected with the control port of the main reversing valve；
Two oil inlets of first shuttle valve are connected with two actuator ports of the main reversing valve respectively.
Preferably, the winch hydraulic control system also includes an overflow valve, wherein, the oil inlet of the overflow valve and institute
The control port connection of bypass recuperation valve is stated, the oil-out of the overflow valve is connected with the fuel tank.
Preferably, the winch hydraulic control system also includes throttling recuperation valve, and the throttling recuperation valve is located at the hydraulic pressure
Between pump and the main reversing valve；Wherein, the oil inlet of the throttling recuperation valve is connected with the oil-out of the hydraulic pump, described
The oil-out of recuperation valve of throttling be connected with the oil inlet of the main reversing valve, the control port and described the of the recuperation valve that throttles
The oil-out connection of one shuttle valve.
Preferably, the first pilot control valve group includes handle and two manual proportional reversing valves；The handle and two
The changement connection of individual manual proportional reversing valve, the oil inlet of described two manual proportional reversing valves and going out for the pressure-reducing valve
Hydraulic fluid port is connected, and the oil return opening of described two manual proportional reversing valves is connected with the fuel tank, described two manual proportional reversing valves
Actuator port be connected with two control ports of the main reversing valve respectively.
Preferably, the winch hydraulic control system also includes the second pilot control valve group, the second shuttle valve and the 3rd shuttle valve；Institute
The oil inlet for stating the second pilot control valve group is connected with the oil-out of the pressure-reducing valve, the oil return of the second pilot control valve group
Mouthful it is connected with the fuel tank, the actuator port of the second pilot control valve group and second shuttle valve and the 3rd shuttle valve
Another oil inlet and described two manual ratios of one of oil inlet connection, second shuttle valve and the 3rd shuttle valve
The oil-out connection of reversal valve, the oil-out of second shuttle valve and the 3rd shuttle valve respectively with two of the main reversing valve
Control port is connected.
It is further preferred that the second pilot control valve group includes amplifier and two guiding electric controlling proportional reversing valves,
The changement of wherein described guiding electric controlling proportional reversing valve is connected with the amplifier.
Preferably, the winch hydraulic control system also includes the 4th shuttle valve for being used for system extension；4th shuttle
The oil-out of valve is connected with the control port of the bypass recuperation valve and the control port of the throttling recuperation valve；4th shuttle
One oil inlet of valve is connected with the oil-out of first shuttle valve, and executing agency is entered in another oil inlet and extension system
Hydraulic oil connection.
It is further preferred that the bypass recuperation valve uses two-way plug-in valve.
It is further preferred that the winch hydraulic control system is provided with two main reversing valves.
It is further preferred that the main reversing valve selects three position four-way directional control valve, and Median Function is p-type.
Compared with conventional hydraulic control system, winch is acted using winch hydraulic control system of the present utility model
Control, has the advantages that：
1st, winch hydraulic control system of the present utility model is by the first shuttle valve of setting and bypasses recuperation valve, to being changed by master
To valve load negative feedback control is carried out into the fluid flow of hydraulic motor.When the load of hydraulic motor becomes big or becomes hour, the
Maximum load pressure in system is caused one shuttle valve the control end of bypass recuperation valve.Now, recuperation valve is bypassed by its control end
Load pressure and hydraulic pump output oil liquid pressure be compared so that adjust hydraulic pump output fluid in mended by the bypass
Repay the fluid flow that valve directly flows back to fuel tank, that is, control to flow into the fluid flow at main reversing valve in hydraulic pump output fluid, enter
And the oil liquid pressure at main reversing valve oil inlet end is adjusted.So when extraneous load force changes, changed by master
To the adjustment of oil liquid pressure at valve oil inlet, the valve port pressure at both sides difference of main reversing valve is set to keep stabilization, and then make to be changed by master
Keep constant to the fluid flow of valve.So that the flow into hydraulic motor is only controlled by the valve core opening amount of main reversing valve
System, is not influenceed by external world's load change, improves the Stability and veracity to entering fluid flow control in hydraulic motor.
2nd, winch hydraulic control system of the present utility model, by setting throttling recuperation valve, to being entered by main reversing valve
The fluid flow of hydraulic motor carries out load positive feedback control.So not only can realize enter hydraulic motor fluid flow not
Influenceed by load change, and cooperated by the load negative feedback control with shunt compensation valve, further improved to logical
Cross the governing speed of main reversing valve flow control and the reliability and stability of regulation process.
Brief description of the drawings
Fig. 1 is the first system figure of the utility model winch hydraulic control system；
Fig. 2 is the structural representation of the first pilot control valve group in Fig. 1；
Fig. 3 is the second system figure of the utility model winch hydraulic control system；
Fig. 4 is the 3rd system diagram of the utility model winch hydraulic control system.
Specific embodiment
The technical scheme in the utility model is described in detail below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, the winch hydraulic control system, including hydraulic pump 11, hydraulic motor 12, fuel tank 13, main commutation
Valve 2, bypass recuperation valve 31, pressure-reducing valve 4, the first pilot control valve group 5 and the first shuttle valve 61.Wherein, the inlet port of hydraulic pump 11
It is connected with fuel tank 13, the oil-out of hydraulic pump 11 oil inlet P simultaneously with main reversing valve 2 bypasses the oil inlet A3 of recuperation valve 31
And the oil inlet A4 connections of pressure-reducing valve 4.The oil return inlet T of main reversing valve 2 is connected with fuel tank 13, actuator port A2 and B2 respectively with
Hydraulic motor 12 into and out of hydraulic fluid port connection.The oil-out B3 for bypassing recuperation valve 31 is connected with fuel tank 13, control port S3 and first
The oil-out connection of shuttle valve 61.The oil-out B4 of pressure-reducing valve 4 is connected with the oil inlet of the first pilot control valve group 5, control port
S4 is connected with fuel tank 13.The oil return opening of the first pilot control valve group 5 is connected with fuel tank 13, actuator port and the two ends of main reversing valve 2
Control port S21 and S22 connection.Two oil inlets of the first shuttle valve 61 are connected with hydraulic motor 12 into and out of hydraulic fluid port respectively,
It is connected with two actuator ports A2 and B2 of main reversing valve 2 respectively, so as to by the hydraulic oil in both actuator port A2 and B2
It is led at the control port S3 of bypass recuperation valve 31.
With reference to shown in Fig. 2, in the utility model, the first pilot control valve group 5 includes handle 51 and two guiding manuals
Proportional reversing valve 52 and 53.Handle 51 is connected with the changement of two guiding manual proportional reversing valves 52 and 53, for controlling
The switching of oil circuit in guiding manual proportional reversing valve 52 and 53.Two oil inlet A52 of guiding manual proportional reversing valve 52 and 53
Communicated with A53, and be connected with the oil-out B4 of pressure-reducing valve 4.Two Hes of oil return inlet T 52 of guiding manual proportional reversing valve 52 and 53
T53 is communicated, and is connected with the drain tap DR in the system, and drain tap DR is connected with fuel tank 13.Two guiding manual ratio commutations
The actuator port B52 and B53 of valve 52 and 53 are connected with the control port S21 and S22 of main reversing valve 2 respectively.Wherein, in manipulator
During handle 51, if A52 and B52 is connected, T52 is closed, and B53 and T53 is connected, and A53 is closed；If A53 and B53 is connected,
Then T53 is closed, and B52 and T52 is connected, and A52 is closed.
With reference to shown in Fig. 1, in the utility model, it is provided with two main reversing valves 2 and use is connected in parallel.So can be with
Improve whole system through-flow flow, and switch operation process stability and reliability.Main reversing valve 2 selects 3-position 4-way
Reversal valve, and Median Function, when being that p-type, i.e. main reversing valve 2 are located at middle position, oil return inlet T is closed, oil inlet P and actuator port
A2 and B2 are communicated.So when main reversing valve 2 is located at middle position state, hydraulic motor 12 is communicated suffered by inside into and out of hydraulic fluid port
Hydraulic coupling balances each other, in halted state.And commutated by controlling main reversing valve 2, hydraulic motor 12 is started
Process is also more steady.Equally, when brake operating is carried out, hydraulic motor 12 into and out of hydraulic fluid port simultaneously access hydraulic oil, therefore
Braking procedure is also more steady.
Preferably, bypass recuperation valve 31 uses the structure of two-way plug-in valve.It is so not only easy for installation, it is easy to implement system
Integrated and modularization, and two-way plug-in valve has the big characteristic of through-current capacity, therefore can meet system to big flow
It is required that,
Additionally, being provided with multiple external-connected ports in the winch hydraulic control system.Wherein, GP1, for detecting hydraulic pump 11
Oil-out pressure；GP2, for pressure at the oil inlet P for detecting main reversing valve 2；GA, GB, are respectively used to detect main reversing valve 2
Oil-out A2 and B2 at pressure；G1, the oil-out pressure for detecting the first shuttle valve 61；XA, XB, are respectively used to detection master and change
To pressure at the control port S22 and S21 of valve 2；JP, for pressure at the oil-out B4 for detecting pressure-reducing valve 4, that is, controls the pressure of oil
Power；LS, for pressure at the control port S3 for detecting bypass recuperation valve 31；DR, is that drain tap is connected with fuel tank 13.
With reference to shown in Fig. 1 and Fig. 2, action control is carried out to winch using winch hydraulic control system of the present utility model
Process, mainly there is following state：
First state, opens in hydraulic pump 11, and when the first pilot control valve group 5 is not operated, main reversing valve 2 is located at interposition
Put, hydraulic motor 12 is in halted state.Now, the flow direction of the output of hydraulic pump 11 fluid is divided into three parts：Part I flow to
At the oil inlet P of main reversing valve 2, entered simultaneously by the actuator port A2 and B2 of main reversing valve 2 hydraulic motor 12 into and out of oil
Mouthful；Part II is flow at the oil inlet A3 of bypass recuperation valve 31；3rd flow at the oil inlet A4 of pressure-reducing valve 4, through over-subtraction
Turn into the relatively low control oil of pressure after the step-down treatment of pressure valve 4, control oil flow to the first pilot control valve group 5 from oil-out B4
At oil inlet A52 and A53.
Because the first pilot control valve group 5 is not operated, handle 51 is located at intermediateness, and oil inlet A52 and A53 are in and close
Closed state.So control oil cannot by guiding manual proportional reversing valve 52 and 53 flow to main reversing valve 2 control port S21 and
At S22, removing the valve element of driving main reversing valve 2 carries out switch operation.Therefore, hydraulic motor 12 is now in halted state.
At the same time, two oil inlets of the first shuttle valve 61 are communicated with the actuator port A2 and B2 of main reversing valve 2, by work
The hydraulic oil of hydraulic fluid port A2 and B2 output is caused at the control port S3 of bypass recuperation valve 31.The valve element of recuperation valve 31 is bypassed in oil-feed
In poised state under the hydraulic oil at mouthful A3 place and the collective effect of the hydraulic oil at control port S3 and contained spring, make valve
Mouth keeps certain aperture.Therefore, a fluid part for the output of hydraulic pump 11 is flow back at fuel tank 13 by oil return opening B3.This
When, the fluid that hydraulic pump 11 is exported in the winch hydraulic control system is maintained at low-pressure low flow state, for supplementing each
The amount of leakage of Hydraulic Elements, can so lower the power loss of whole system, improve the operating efficiency of system.
Second state, when the handle 51 to the first pilot control valve group 5 is operated.The oil-out B4 outputs of pressure-reducing valve 4
Control oil, by proportional reversing valve 52 or 53 of first starting, flow at the control port S21 or S22 of main reversing valve 2 so that
The main valve plug movement of main reversing valve 2 is driven, and then the actuator port A2 in main reversing valve 2 is connect with oil inlet P (or oil return inlet T)
Logical, actuator port B2 is connected with oil return inlet T (or oil inlet P), and make hydraulic motor 12 produces pressure differential into and out of hydraulic fluid port, so that
Drive hydraulic motor 12 to start rotation, drive winch work.
The third state, keeps commutation action constant, during winch course of normal operation in handle 51.If hydraulic motor 12
Load becomes suddenly big (or diminishing), then the valve port pressure at both sides difference Δ p of main reversing valve 2 changes, i.e. oil inlet P and working oil
Pressure differential change between mouthful A2 (or B2), and then flow by main reversing valve 2 changes.Now, by bypassing compensation
Change of the valve 31 to system load pressure carries out negative-feedback adjustment, reaches and the flow by main reversing valve 2 is controlled, it is ensured that in hand
In the case that handle 5 keeps commutation action constant, the flow into hydraulic motor 12 keeps constant.Entered by main reversing valve 2
The flow of hydraulic motor 12 only receives controlling for the valve core opening amount of main reversing valve 2, without being influenceed by external world's load change.
Wherein, bypass recuperation valve 31 carries out the process of negative-feedback adjustment and is：When load becomes big (or diminishing) suddenly, master changes
To the pressure rise (or attenuating) of the pressure oil at actuator port A2 (or B2) place of valve 2, and bypass is flow to by the first shuttle valve 61
The pressure rise (or reduction) of the pressure oil at the control port S3 of recuperation valve 31.Now, before the valve element of bypass recuperation valve 31
The poised state of holding is destroyed, and valve element is moved, and the amount of opening of valve element reduces (or increase), makes to be flowed back to by oil return opening B3
The fluid of fuel tank 13 reduces (or increasing), flows into the oil increasing (or reduction) at the oil inlet P of main reversing valve 2, and then make master
Oil liquid pressure at the oil inlet P of reversal valve 2 raises (or reduction), until by between oil inlet P and actuator port A2 (or B2)
Pressure differential recover again.Now one is kept by the flow and the preceding flow by main reversing valve 2 of load change of main reversing valve 2
Cause.
With reference to shown in Fig. 3, it is preferred that winch hydraulic control system of the present utility model also includes overflow valve 32.Overflow valve
32 oil inlet is connected with the control port S3 of bypass recuperation valve 31, and oil-out is connected with fuel tank 13.Start in hydraulic motor 12
When moment or the load being subject to become big suddenly, a compression shock, and the compression shock can be produced to be passed by the first shuttle valve 61
To the control port S3 of bypass recuperation valve 31.Now, in the presence of overflow valve 32, the compression shock can be absorbed
And weakening, so as to avoid bypass recuperation valve 31 from being under pressure impact, improve the stability and bypass of the winch hydraulic control system
The service life of recuperation valve 31.Wherein, the Opening pressure of overflow valve 32 is set as the safe pressure of the winch hydraulic control system
.
Preferably, the winch hydraulic control system also includes a throttling recuperation valve 7.Throttling recuperation valve 7 is located at hydraulic pump
Between 11 and main reversing valve 2, the oil inlet A7 of the recuperation valve 7 that throttles is connected with the oil-out of hydraulic pump 11, and the recuperation valve 7 of throttling goes out
Hydraulic fluid port B7 is connected with the oil inlet P of main reversing valve 2, and the control port S7 of the recuperation valve 7 that throttles and the oil-out of the first shuttle valve 61 connect
Connect.So according to the change of load, by automatically adjusting for the recuperation valve 7 that throttles, it is possible to achieve to the flow by main reversing valve 2
Control.When the load of hydraulic motor 12 is constant, the pressure oil and control port of the valve element at oil-out B7 of the recuperation valve 7 that throttles
Pressure oil at S7 and poised state is under the collective effect of contained spring, oil inlet A7 is communicated with oil-out B7.Work as liquid
When the load of pressure motor 12 becomes big (or diminishing), the valve element stress disequilibrium of the recuperation valve 7 that throttles is moved, and compensates throttling
The valve core opening quantitative change of valve 7 is big (or diminishing), and the flow for flowing through throttling recuperation valve 7 becomes big (or diminishing), so that main reversing valve 2
Oil inlet P at pressure rise (or reduce).According to the change of load, by throttling, recuperation valve 7 pairs flow to main reversing valve 2
Flow carries out positive feed-back operation, so that the flow for flowing through main reversing valve 2 keeps stabilization, and then improves the winch hydraulic control system
Unite to the Stability and veracity for entering the control of the flow of hydraulic motor 12.Further, since throttling recuperation valve 7 has sensitive reaction fast
The characteristics of, so preferably quick elimination of auxiliary bypass choke valve 31 hydraulic motor 12 can be caused to load change institute band by stormy waves
The problem come.
Preferably, with reference to shown in Fig. 2 and Fig. 3, the winch hydraulic control system also includes the second pilot control valve group 8, the
Two shuttle valves 62 and the 3rd shuttle valve 63.Second pilot control valve group 8 includes guiding electric controlling proportional reversing valve 81 and 82, amplifier 83,
Wherein, the changement of guiding electric controlling proportional reversing valve 81 and 82 is connected by circuit with amplifier 83.Now, guiding electric controlling ratio
The example oil inlet of reversal valve 81 and 82 is connected with the oil-out B4 of pressure-reducing valve 4, the oil inlet of the second shuttle valve 62 respectively with first conduction
The actuator port B52 connections of the actuator port and guiding manual proportional reversing valve 52 of proportional reversing valve 81 are controlled, the second shuttle valve 62
Oil-out is connected with the control port S21 of main reversing valve 2.Similarly, the oil inlet of the 3rd shuttle valve 63 respectively with guiding electric controlling ratio
The actuator port B53 connections of the actuator port and guiding manual proportional reversing valve 53 of reversal valve 82, the oil-out of the second shuttle valve 63
It is connected with the control port S22 of main reversing valve 2.So to the switch operation of main reversing valve 2, can both be carried out closely by handle 51
The manual control of distance, it is also possible to automatically controlled at a distance by amplifier 83.
It is further preferred that with reference to shown in Fig. 4, the winch hydraulic control system also includes be used for system extension the
Four shuttle valves 64, the 4th shuttle valve 64 is located between the first shuttle valve 61 and bypass recuperation valve 31 and throttling recuperation valve 7.Wherein, the 4th shuttle
The oil-out of valve 64 is connected with the control port S3 of bypass recuperation valve 31 and the control port S7 of throttling recuperation valve 7, the 4th shuttle valve
64 oil inlet is connected with the oil-out of the first shuttle valve 61, and another oil inlet is connected with ECP Extended Capabilities Port K.When the winch liquid
When pressure control system is used alone, ECP Extended Capabilities Port K is connected with drain tap DR, i.e., be connected with fuel tank 13；When extension system and the strand
Car hydraulic control system shares hydraulic pump 11, bypass recuperation valve 31 and throttling recuperation valve 7, and needs also exist for by extension system
When the fluid flow of middle main reversing valve is controlled, ECP Extended Capabilities Port K is connected with the hydraulic oil that executing agency is flowed into extension system.
The high-voltage oil liquid that executing agency is flowed into extension system can be so caused at bypass recuperation valve 31 and throttling recuperation valve 7, entered
And to being controlled by the fluid flow of main reversing valve in extension system.
Claims (10)
1. a kind of winch hydraulic control system, including hydraulic pump, hydraulic motor and fuel tank, it is characterised in that also including main commutation
Valve, bypass recuperation valve, pressure-reducing valve, the first pilot control valve group and the first shuttle valve；Wherein,
The inlet port of the hydraulic pump is connected with the fuel tank, and the oil-out of the hydraulic pump enters with the main reversing valve simultaneously
The oil inlet connection of hydraulic fluid port, the oil inlet of the bypass recuperation valve and the pressure-reducing valve；
The oil return opening of the main reversing valve is connected with the fuel tank, two actuator ports of the main reversing valve respectively with the liquid
Pressure motor into and out of hydraulic fluid port connection；
It is described bypass recuperation valve oil-out be connected with the fuel tank, it is described bypass recuperation valve control port and first shuttle
The oil-out connection of valve；
The oil-out of the pressure-reducing valve is connected with the oil inlet of the first pilot control valve group；
The oil return opening of the first pilot control valve group is connected with the fuel tank, the actuator port of the first pilot control valve group
Control port with the main reversing valve is connected；
Two oil inlets of first shuttle valve are connected with two actuator ports of the main reversing valve respectively.
2. winch hydraulic control system according to claim 1, it is characterised in that the winch hydraulic control system also includes
One overflow valve, wherein, the oil inlet of the overflow valve is connected with the control port of the bypass recuperation valve, the overflow valve
Oil-out is connected with the fuel tank.
3. winch hydraulic control system according to claim 1, it is characterised in that the winch hydraulic control system also includes
Throttling recuperation valve, the throttling recuperation valve is located between the hydraulic pump and the main reversing valve；Wherein, the throttling recuperation valve
Oil inlet be connected with the oil-out of the hydraulic pump, it is described throttling recuperation valve oil-out and the main reversing valve oil inlet
Connection, the control port of the throttling recuperation valve is connected with the oil-out of first shuttle valve.
4. the winch hydraulic control system according to any one in claim 1-3, it is characterised in that first guide
Control valve group includes handle and two manual proportional reversing valves；The handle and two changements of manual proportional reversing valve connect
Connect, the oil inlet of described two manual proportional reversing valves is connected with the oil-out of the pressure-reducing valve, described two manual ratios are changed
Be connected with the fuel tank to the oil return opening of valve, the actuator port of described two manual proportional reversing valves respectively with the main reversing valve
Two control ports connection.
5. winch hydraulic control system according to claim 4, it is characterised in that the winch hydraulic control system also includes
Second pilot control valve group, the second shuttle valve and the 3rd shuttle valve；The oil inlet of the second pilot control valve group and the pressure-reducing valve
Oil-out connection, the oil return opening of the second pilot control valve group is connected with the fuel tank, the second pilot control valve group
Actuator port be connected with one of oil inlet of second shuttle valve and the 3rd shuttle valve, second shuttle valve and described
Another oil inlet of 3rd shuttle valve is connected with the oil-out of described two manual proportional reversing valves, second shuttle valve and described
The oil-out of the 3rd shuttle valve is connected with two control ports of the main reversing valve respectively.
6. winch hydraulic control system according to claim 5, it is characterised in that the second pilot control valve group includes
Amplifier and two guiding electric controlling proportional reversing valves, wherein the changement of the guiding electric controlling proportional reversing valve and the amplification
Device is connected.
7. winch hydraulic control system according to claim 3, it is characterised in that the winch hydraulic control system also includes
One the 4th shuttle valve for being used for system extension；Control port of the oil-out of the 4th shuttle valve with the bypass recuperation valve and institute
State the control port connection of throttling recuperation valve；One oil inlet of the 4th shuttle valve connects with the oil-out of first shuttle valve
Connect, another oil inlet is connected with the hydraulic oil in extension system into executing agency.
8. the winch hydraulic control system according to any one in claim 1-3, it is characterised in that the bypass compensation
Valve uses two-way plug-in valve.
9. the winch hydraulic control system according to any one in claim 1-3, it is characterised in that the winch hydraulic pressure control
System processed is provided with two main reversing valves.
10. the winch hydraulic control system according to any one in claim 1-3, it is characterised in that the main commutation
Valve selects three position four-way directional control valve, and Median Function is p-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432923.5U CN206307938U (en) | 2016-12-26 | 2016-12-26 | Winch hydraulic control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432923.5U CN206307938U (en) | 2016-12-26 | 2016-12-26 | Winch hydraulic control system |
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| CN206307938U true CN206307938U (en) | 2017-07-07 |
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| CN201621432923.5U Active CN206307938U (en) | 2016-12-26 | 2016-12-26 | Winch hydraulic control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517019A (en) * | 2016-12-26 | 2017-03-22 | 上海豪高机电科技有限公司 | Hydraulic control system for winch |
| CN107882791A (en) * | 2017-11-06 | 2018-04-06 | 钟爱生 | Multiple cylinders press hydraulic control system and its control method |
-
2016
- 2016-12-26 CN CN201621432923.5U patent/CN206307938U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106517019A (en) * | 2016-12-26 | 2017-03-22 | 上海豪高机电科技有限公司 | Hydraulic control system for winch |
| CN107882791A (en) * | 2017-11-06 | 2018-04-06 | 钟爱生 | Multiple cylinders press hydraulic control system and its control method |
| CN107882791B (en) * | 2017-11-06 | 2019-05-28 | 钟爱生 | Multiple cylinders press hydraulic control system and its control method |
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