CN206017293U - Loading machine variable multiple power levels control module and hydraulic system - Google Patents
Loading machine variable multiple power levels control module and hydraulic system Download PDFInfo
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- CN206017293U CN206017293U CN201620663242.3U CN201620663242U CN206017293U CN 206017293 U CN206017293 U CN 206017293U CN 201620663242 U CN201620663242 U CN 201620663242U CN 206017293 U CN206017293 U CN 206017293U
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Abstract
The utility model discloses a kind of loading machine variable multiple power levels control module, including the first shuttle valve group, the second shuttle valve group, reversal valve, variable pump LS pressure-control valves；Guide's oil pressure is transferred to pilot operated directional control valve by X5 mouths and X6 mouths by the first shuttle valve group；The second shuttle valve group X4 mouth connects pilot control pressure, and maximum in X5 mouths, X6 mouths, X4 mouth pilot pressure oils is exported by the second shuttle valve group by X7 mouths；The pressure-control valve connects variable pump LS mouths by pilot operated directional control valve LS2 mouths；Variable pump LS pressure-control valve T mouths connect fuel tank.In addition the utility model is also disclosed a kind of control of the loading machine variable multiple power levels containing above-mentioned multiple power levels control module hydraulic system.The utility model for hydraulic system of working difference executing agency, set to should hydraulic system of working pressure, that is, set different variable pump LS oil pressure reliefs, adjust the moment of torsion that whole machine hydraulic system is consumed in good time, and then reach the energy-efficient effect of whole machine.
Description
Technical field
The utility model is related to a kind of loader hydraulic system, specifically a kind of loading machine variable multiple power levels control module
And hydraulic system.
Background technology
Current loading machine variable delivery hydraulic system, variable pump operating pressure are set when being dispatched from the factory by main frame producer, i.e.,
Operating pressure is invariable, i.e., it is definite value that hydraulic system consumes peak power, is to meet different operating mode use requirements, hydraulic pressure
System is dispatched from the factory, and pressure setting is general all higher, and loading machine is enriched constantly with accessory hydraulic system（For example：Timber grab, grabs grass
Machine, scavenging machine, fork installation etc.）, loading machine working condition and operating area more and more wide.
As the operating pressure difference that different accessories need is larger, is all set up after operating pressure by producer's unification, led
When causing some low pressure accessory hydraulic systems to support the use with high pressure accessory hydraulic system, it is necessary to using high voltage bearing Hydraulic Elements
（Hydraulic jack, valve element etc.）, auxiliary element (fluid pressure line, accumulator etc.) causes unnecessary design selection to waste, and
High pressure can cause engine power to waste and machine system heating.
Content of the invention
For the problem that above-mentioned prior art is present, the utility model provides a kind of loading machine variable multiple power levels and controls mould
Block and hydraulic system, for hydraulic system of working difference executing agency, set to should hydraulic system of working pressure, that is, set not
Same variable pump LS oil pressure reliefs, adjust the moment of torsion that whole machine hydraulic system is consumed in good time, and then reach the energy-efficient effect of whole machine
Really.
To achieve these goals, the technical solution adopted in the utility model is：A kind of loading machine variable multiple power levels control
Molding block, including the first shuttle valve group, the second shuttle valve group, reversal valve, variable pump LS pressure-control valves；The first shuttle valve group passes through
Guide's oil pressure is transferred to pilot operated directional control valve by X5 mouths and X6 mouths；The second shuttle valve group X4 mouth connection pilot control pressure, second
Maximum in X5 mouths, X6 mouths, X4 mouth pilot pressure oils is exported by shuttle valve group by X7 mouths；The pressure-control valve is changed by hydraulic control
Variable pump LS mouths are connected to valve LS2 mouths；Variable pump LS pressure-control valve T mouths connect fuel tank.
The multiple power levels control module is further, and the pilot operated directional control valve is also associated with pressure tap M, LS1, and M mouths are through liquid
Control reversal valve connection LS2 mouths, LS1 mouths connect pressure-control valve through pilot operated directional control valve.
The utility model also provides a kind of loading machine variable multiple power levels control hydraulic system, including hydraulic oil container, steering
Variable plunger pump, shuttle valve group, steering hydraulic system, flow switch valve, pressure-reducing valve, main valve, working gear pump and hydraulic control pilot valve；
Also include above-described multiple power levels control module；The steering variable plunger displacement pump inlet port is connected with hydraulic oil container, fuel-displaced
Mouth connection steering hydraulic system provides pressure oil to steering, while steering variable plunger displacement pump passes through pressure-reducing valve to hydraulic control guide
Valve provides pressure oil, and the unnecessary fluid of steering is collaborated to hydraulic system of working by flow switch valve；The working gear pump
Inlet port is connected with hydraulic oil container, and oil-out is connected main valve with behind flow switch valve outlet port interflow；The hydraulic control pilot valve output
The corresponding valve rod commutation of guide oil liquid control bound, is respectively completed the corresponding actions of executive component；The first pilot of hydraulic control pilot valve output
Power controls flow switching valve by shuttle valve group, collaborates steering variable plunger displacement pump；The LS2 mouths of the multiple power levels control module connect
Logical steering variable plunger displacement pump LS mouths, the X4 mouths of multiple power levels control module, X5 mouths and X6 mouths connection hydraulic control pilot valve, while by X4
Mouthful, X5 mouths, X6 mouths maximum working pressure (MWP) are supplied to shuttle valve group by the output of X7 mouths.
The multiple power levels control hydraulic system is further, and the LS pressure-control valves set pressure and set pressure less than main valve
Power.
The multiple power levels control hydraulic system is further, and the executive component is oil cylinder group one, oil cylinder group two and oil cylinder
Group three.
The utility model has the advantages that：
（1）The multiple power levels control module by：Two shuttle valve groups, two-bit triplet pilot operated directional control valve, pressure peaces
Full valve and a valve block for installing above-mentioned inserted valve are constituted.In addition to valve block, other installation valves are standard component, are easy to mass to answer
With.Simple structure, easy to process, with low cost, stable performance.
（2）Applied range, practical region width.The multiple power levels control module is practically applicable to all loader hydraulic systems at present
System, including quantitative system, determines variable system and entire variable system, and by increasing the control module in systems, adjustment in good time is
The pressure of system, adapts to corresponding duty requirements.
（3）Subsequently expand space big.The multiple power levels control module existing on the basis of, can according to whole machine configure or
The set pressure of pressure safety valve can be had above-mentioned fixation pressure to be adjusted to by current control by client and the demand of operating mode
Proportional pressure control valve, or have the pressure-control valve of pilot pressure control, so as to the demand of more preferable adaptation condition, lift whole machine
Adaptability.
（4）The multiple power levels control module is controlled by pilot valve, can be with secondary adjustment system pressure, to whole machine hydraulic tube
Road and components and parts are effectively protected.
Description of the drawings
Fig. 1 is the utility model multiple power levels control module schematic diagram；
Fig. 2 is the utility model loading machine variable multiple power levels control hydraulic system principle figure；
Fig. 3 is the utility model control flow chart；
In figure：1st, hydraulic oil container, 2, steering variable plunger displacement pump, 3, shuttle valve group, 4, steering hydraulic system, 5, flow switch
Valve, 6, pressure-reducing valve, 7, main valve, 8, oil cylinder group one, 9, oil cylinder group two, 10, oil cylinder group three, 11, working gear pump, 12, hydraulic control elder generation
Pilot valve, 13, multiple power levels control module, the 14, first shuttle valve group, the 15, second shuttle valve group, 16, pilot operated directional control valve, 17, variable pump
LS pressure-control valves.
Specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in figure 1, a kind of loading machine variable multiple power levels control module of the utility model, including the first shuttle valve group 14,
Second shuttle valve group 15, reversal valve 16, variable pump LS pressure-control valves 17；First shuttle valve group 14 passes through X5 mouths and X6 mouths by guide oil
Pressure is transferred to pilot operated directional control valve 16；The X4 mouths connection pilot control pressure of the second shuttle valve group 15, the second shuttle valve group 15 is by X5
In mouth, X6 mouths, X4 mouth pilot pressure oils, maximum is exported by X7 mouths；LS2 of the pressure-control valve 17 by pilot operated directional control valve 16
Mouth connects variable pump LS mouths；Variable pump LS pressure-control valve 17T mouths connect fuel tank.Wherein X5, X6, X4 connect pilot control pressure
Power；X7 is used for the output of control pressure；Reversal valve 16 is used for the switching of LS control pressures, when X5, X6 have control pressure to be input into,
Commutation is realized, LS pressure is switched to the pressure for controlling that valve 17 sets；Variable pump LS pressure-control valves 17 are used for adjusting whole machine LS
LS pressure is adjusted to which and sets pressure by pressure；When pilot input port X5, X6 have pilot control pressure to be input into, whole machine hydraulic pressure
The pressure of system will switch to variable pump LS pressure-control valves 17 to set pressure, and then reduce the moment of torsion that hydraulic system is consumed.?
Adjust whole machine hydraulic system when completing different operation actions according to the actual requirements in good time and set pressure, adjust hydraulic system consumption
Power, the output of the whole mechanomotive force of Proper Match, and then reach the purpose of efficient energy-saving.
On the basis of said structure, the multiple power levels control module pilot operated directional control valve 16 is also associated with pressure tap M, LS1, M
Mouth connects LS2 mouths through pilot operated directional control valve 16, and LS1 mouths connect pressure-control valve 17 through pilot operated directional control valve 16.
As shown in Fig. 2 a kind of loading machine variable multiple power levels of the utility model control hydraulic system, including hydraulic oil container 1,
Steering variable plunger displacement pump 2, shuttle valve group 3, steering hydraulic system 4, flow switch valve 5, pressure-reducing valve 6, main valve 7, working gear pump 11,
Hydraulic control pilot valve 12；And multiple power levels control module 13 recited above；2 inlet port of steering variable plunger displacement pump and hydraulic oil container
1 connection, oil-out connect steering hydraulic system 4 and provide pressure oil to steering, while steering variable plunger displacement pump 2 is by decompression
Valve 6 provides pressure oil to hydraulic control pilot valve 12, and the unnecessary fluid of steering is collaborated to working hydraulic pressure system by flow switch valve 5
System；11 inlet port of working gear pump is connected with hydraulic oil container 1, and oil-out is connected master with behind the outlet of flow switch valve 5 interflow
Valve 7；7 corresponding valve rod commutation of the output guide oil liquid of hydraulic control pilot valve 12 control bound, is respectively completed the corresponding of executive component
Action, the embodiment executive component for being given in figure here are three oil cylinder groups, respectively oil cylinder group 1, oil cylinder group 29 and oil
Cylinder group 3 10.The output pilot pressure of hydraulic control pilot valve 12 controls flow switching valve 5 by shuttle valve group 3, makes steering plunger displacement pump 2-in-1
Stream；The LS2 mouths of the multiple power levels control module 13 connect steering variable plunger displacement pump 2LS mouths, multiple power levels control module 13
X4 mouths, X5 mouths, X6 mouths connection hydraulic control pilot valve 12.
Control flow of the multiple power levels control module in hydraulic system, as shown in figure 3, the output guide of hydraulic control pilot valve 12
Control pressure, while control bound 7, completes the flexible of different oil cylinder groups, multiple power levels control module 13 adjusts whole machine in good time
The operating pressure of system and shuttle valve group 3, decide to move to whether Variable plunger pump 2 participates in interflow to hydraulic system of working.
Multiple power levels control module 13 is illustrated in conjunction with above-mentioned, loading machine variable multiple power levels control hydraulic work system mistake
Journey is as follows：
1. when hydraulic control 12 attonity of pilot valve, export without pilot pressure, converging system control module 5 is in closing shape
State, steering variable plunger displacement pump 2 only provide necessary flow to steering, and when steering does not work, Variable plunger pump is without flow
Output.
2., when hydraulic control pilot valve 12 starts to do action, steering variable plunger displacement pump 2 participates in work system with constant displacement pump form
Interflow, now system pressure is set by main valve 7.The A1 of the a1 of hydraulic control pilot valve 12, b1 output pilot pressure oil control bound 7,
B1 joins pressure oil output, completes the corresponding actions of oil cylinder group 1, and now multiple power levels control module 13 is not involved in work；In the same manner,
A2, B2 connection pressure oil output of the a2 of hydraulic control pilot valve 12, b2 output pilot pressure oil control bound 7, completes oil cylinder group 29
Corresponding actions；Now multiple power levels control module 13 is not involved in work；When the a3 of pilot valve 12, b3 output pilot pressure oil controls
A3, B3 connection pressure oil output of main valve 7, completes the corresponding actions of oil cylinder group 3 10, while the a3 of hydraulic control pilot valve 12, b3 output
Pilot pressure oil causes the X5 mouths of multiple power levels control module 13, X6 mouths, promotes pilot operated directional control valve 16 through the first shuttle valve group 14
Work system pressure is adjusted to the pressure that variable pump LS pressure-control valves 17 set by commutation.
Here LS pressure-control valves 17 are set pressure preferably pressure is set less than main valve 2.Its effect is：Reduce system first
System pressure, can be effectively protected to elements such as fluid pressure lines；Secondly when there is spill losses, it is possible to reduce whole machine work(
The waste of rate, the heating of system.
Certainly, above-described embodiment is only preferred version of the present utility model, is specifically not limited thereto, and on this basis may be used
Make according to actual needs having and targetedly adjust, so as to obtain different embodiments.Due to mode in the cards compared with
Many, just no longer illustrate one by one here.
Claims (5)
1. a kind of loading machine variable multiple power levels control module, it is characterised in that including the first shuttle valve group（14）, the second shuttle valve group
（15）, reversal valve（16）, variable pump LS pressure-control valves (17)；The first shuttle valve group（14）By X5 mouths and X6 mouths by guide
Oil pressure is transferred to pilot operated directional control valve（16）；The second shuttle valve group（15）X4 mouths connect pilot control pressure, the second shuttle valve group
（15）Maximum in X5 mouths, X6 mouths, X4 mouth pilot pressure oils is exported by X7 mouths；The pressure-control valve（17）By hydraulic control
Reversal valve（16）LS2 mouths connect variable pump LS mouths；Variable pump LS pressure-control valves (17) T mouths connect fuel tank.
2. a kind of loading machine variable multiple power levels control module according to claim 1, it is characterised in that the hydraulic control is changed
To valve（16）Pressure tap M, LS1 is also associated with, M mouths are through pilot operated directional control valve（16）Connection LS2 mouths, LS1 mouths are through pilot operated directional control valve
（16）Connection pressure-control valve (17).
3. a kind of loading machine variable multiple power levels control hydraulic system, including hydraulic oil container（1）, steering variable plunger displacement pump（2）, shuttle
Valve group（3）, steering hydraulic system（4）, flow switch valve（5）, pressure-reducing valve（6）, main valve（7）, working gear pump（11）And hydraulic control
Pilot valve（12）；Characterized in that, also including the multiple power levels control module described in claim 1 to 2（13）；
The steering variable plunger displacement pump（2）Inlet port and hydraulic oil container（1）Connection, oil-out connect steering hydraulic system（4）Give
Steering provides pressure oil, while steering variable plunger displacement pump（2）By pressure-reducing valve（6）To hydraulic control pilot valve（12）Pressure is provided
Oil, the unnecessary fluid of steering pass through flow switch valve（5）, collaborate to hydraulic system of working；The working gear pump（11）Inhale
Hydraulic fluid port and hydraulic oil container（1）Connection, oil-out and flow switch valve（5）Outlet connects main valve behind interflow（7）；The hydraulic control guide
Valve（12）Output guide oil liquid control bound（7）Corresponding valve rod commutation, is respectively completed the corresponding actions of executive component；Hydraulic control guide
Valve（12）Output pilot pressure passes through shuttle valve group（3）Control flow switching valve（5）, make steering variable plunger displacement pump（2）Interflow；Described
Multiple power levels control module（13）LS2 mouths connect steering variable plunger displacement pump（2）LS mouths, multiple power levels control module（13）X4
Mouth, X5 mouths and X6 mouths connection hydraulic control pilot valve（12）, while by X4 mouths, X5 mouths, X6 mouths maximum working pressure (MWP) are exported by X7 mouths
It is supplied to shuttle valve group（3）.
4. a kind of loading machine variable multiple power levels according to claim 3 control hydraulic system, it is characterised in that the LS
Pressure-control valve (17) sets pressure and is less than main valve（7）Set pressure.
5. a kind of loading machine variable multiple power levels according to claim 3 control hydraulic system, it is characterised in that described hold
Units are oil cylinder group one（8）, oil cylinder group two（9）With oil cylinder group three（10）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620663242.3U CN206017293U (en) | 2016-06-29 | 2016-06-29 | Loading machine variable multiple power levels control module and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620663242.3U CN206017293U (en) | 2016-06-29 | 2016-06-29 | Loading machine variable multiple power levels control module and hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206017293U true CN206017293U (en) | 2017-03-15 |
Family
ID=58243991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620663242.3U Withdrawn - After Issue CN206017293U (en) | 2016-06-29 | 2016-06-29 | Loading machine variable multiple power levels control module and hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206017293U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952700A (en) * | 2016-06-29 | 2016-09-21 | 徐工集团工程机械股份有限公司科技分公司 | Loader variable multi-stage power control module and hydraulic system |
| CN108644174A (en) * | 2018-05-23 | 2018-10-12 | 河南卫华特种车辆有限公司 | A kind of multistage pressure flow asks for valve |
| CN113494111A (en) * | 2021-07-27 | 2021-10-12 | 柳州柳工液压件有限公司 | Main control valve, fixed variable hydraulic system and loader |
-
2016
- 2016-06-29 CN CN201620663242.3U patent/CN206017293U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952700A (en) * | 2016-06-29 | 2016-09-21 | 徐工集团工程机械股份有限公司科技分公司 | Loader variable multi-stage power control module and hydraulic system |
| CN108644174A (en) * | 2018-05-23 | 2018-10-12 | 河南卫华特种车辆有限公司 | A kind of multistage pressure flow asks for valve |
| CN108644174B (en) * | 2018-05-23 | 2024-01-12 | 中山市力派智能科技有限公司 | Multistage pressure flow self-taking valve |
| CN113494111A (en) * | 2021-07-27 | 2021-10-12 | 柳州柳工液压件有限公司 | Main control valve, fixed variable hydraulic system and loader |
| CN113494111B (en) * | 2021-07-27 | 2022-08-05 | 柳州柳工液压件有限公司 | Main control valve, fixed variable hydraulic system and loader |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170315 Effective date of abandoning: 20180814 |
|
| AV01 | Patent right actively abandoned |