CN108131337A - A kind of control valve group for being used for accumulator filling liquid and off-load - Google Patents
A kind of control valve group for being used for accumulator filling liquid and off-load Download PDFInfo
- Publication number
- CN108131337A CN108131337A CN201810005852.8A CN201810005852A CN108131337A CN 108131337 A CN108131337 A CN 108131337A CN 201810005852 A CN201810005852 A CN 201810005852A CN 108131337 A CN108131337 A CN 108131337A
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- Prior art keywords
- valve
- accumulator
- control valve
- flow control
- guiding
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- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims description 13
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004581 coalescence Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000011217 control strategy Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 20
- 239000003245 coal Substances 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
- F15B1/0275—Installations or systems with accumulators having accumulator charging devices with two or more pilot valves, e.g. for independent setting of the cut-in and cut-out pressures
-
- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/022—Installations or systems with accumulators used as an emergency power source, e.g. in case of pump failure
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of control valve group for accumulator filling liquid and off-load, including：Flow control valve, check valve and the first guiding valve direction valve；The input terminal of the flow control valve is connect with for providing the pump of oil pressure, and the first output terminal of the flow control valve is connected to the input terminal of the check valve；The output terminal of the check valve is connected to the input terminal of accumulator and the first guiding valve direction valve；The output terminal of the first guiding valve direction valve converges with the second output terminal of the flow control valve and is connected to motor；The fluid of pump output is additionally operable to be output in motor by flow control valve second output terminal for being output in accumulator by the first output terminal and check valve of flow control valve；Fluid in accumulator is used to be input in motor by the first guiding valve direction valve.The control valve group can provide accumulator filling liquid and unloading process the control strategy of safety and stability, and then improve validity and stability that accumulator uses.
Description
Technical field
The present invention relates to accumulator filling liquid and unloading control correlative technology fields, particularly relate to a kind of for accumulator filling liquid
And the control valve group of off-load.
Background technology
Currently, accumulator is both provided in many ancillary equipments, for providing certain move in urgent or transitory state
Power drives corresponding motor operations, and then ensure the safety of machinery.Such as：In development of auxiliary transport in coal mines equipment, stent is removed
Fortune vehicle is to transport equipment necessary to hydraulic support, jumbo.And the control valve group on bracket carrier is to ensure vehicle energy
The prerequisite of enough safe drivings.By control valve group, filling liquid can be carried out to accumulator and off-load is protected, when accumulator is full of
Afterwards, power can also be provided to steering system by control valve group, it, can in the accumulator short time after vehicle runs out of steam source for some reason
To ensure that steering and hydraulic lift(ing) cylinder can work normally.
But the accumulator filling liquid of the vehicle in industry and off-load are mainly by various standard valves, duty valve and sebific duct at present
Composition, and the connection between standard valve and duty valve, valve plate etc., using with safety of coal mines identity certificate, meet coal
The hydralic hose of ore deposit requirement.When related valves class is more, will result in connection rubber tube is more, connection is chaotic, service clearance is small,
Sebific duct buying expenses are high, pipeline is long-term exposed easy to aging, while pipeline easily burns frictional impact damage, and tie point leaks
Etc. problems.And current control valve group is also difficult to realize preferable control effect so that accumulator filling liquid and off-load
Journey stability and reliability be not high.
Invention content
It in view of this, can it is an object of the invention to propose a kind of control valve group for being used for accumulator filling liquid and off-load
The control strategy of safety and stability is provided accumulator filling liquid and unloading process, and then improves validity and stabilization that accumulator uses
Property.
Based on a kind of above-mentioned purpose control valve group for accumulator filling liquid and off-load provided by the invention, including：Flow
Control valve, check valve and the first guiding valve direction valve；The input terminal of the flow control valve is connect with for providing the pump of oil pressure,
First output terminal of the flow control valve is connected to the input terminal of the check valve；The output terminal of the check valve is connected to storage
The input terminal of energy device and the first guiding valve direction valve；The output terminal of the first guiding valve direction valve and the flow control valve
Second output terminal converge and be connected to motor；
The fluid of pump output by the first output terminal and check valve of flow control valve for being output in accumulator, also
For being output in motor by flow control valve second output terminal；Fluid in accumulator is used for through the first guiding valve direction valve
It is input in motor.
Optionally, overflow valve is further included；The input terminal of the overflow valve is connected to the input terminal of the flow control valve, institute
The output terminal for stating overflow valve is connected to the second output terminal of the flow control valve；The overflow valve is used to control the flow control
The pressure of the input terminal of valve processed.
Optionally, accumulator sensing-guide's unloading valve is further included；The control terminal of accumulator sensing-guide's unloading valve
It is connected to accumulator input terminal；The input terminal of accumulator sensing-guide's unloading valve is connected to the of the flow control valve
Four ends；The output terminal of accumulator sensing-guide's unloading valve is connected to fuel tank；The accumulator sensing-guide's unloading valve is used
The oil pressure being input in control in accumulator.
Optionally, throttle valve is further included；The input terminal of accumulator sensing-guide's unloading valve by the throttle valve with
The 4th end connection of the flow control valve, for adjusting flow control unloading rate.
Optionally, the second guiding valve direction valve is further included；The input terminal of the second guiding valve direction valve and the flow control
The 4th end connection of valve, output terminal are connected to fuel tank；The second guiding valve direction valve is used to substitute accumulator sensing-guide's off-load
Valve realizes off-load.
Optionally, the first guiding valve direction valve and the second guiding valve direction valve are the operated direction valve of gas control.
Optionally, valve block body is further included；It is provided in the valve block body and the flow control valve, check valve,
One guiding valve direction valve, overflow valve, accumulator sensing-guide's off-load, throttle valve and the second guiding valve direction valve form oil circuit and correspond to
Channel and corresponding mounting hole；For causing the flow control valve, check valve, the first guiding valve direction valve, overflow valve, storage
Energy device sensing-guide's off-load, throttle valve and the second guiding valve direction valve is integrated by mounting hole in valve block body；
The valve block body is correspondingly arranged on defeated with the PRESSURE input ports of pump connection, the BY-PASS being connect with motor
Outlet, the STEER implementation of port being connect with accumulator and the DRAIN oil return openings being connect with fuel tank.
Optionally, the first pressure tap and the second pressure tap, first pressure tap are additionally provided in the valve block body
It is connect respectively with external pressure gauge with the second pressure tap, is used to implement the monitoring of control valve group entrance and outlet pressure.
From the above it can be seen that provided by the present invention for accumulator filling liquid and the control valve group of off-load, by setting
Preferential level shunt can be carried out to the oil pressure that pump provides by putting flow control valve, preferentially carry out filling liquid to accumulator by check valve,
Hydraulic oil is provided, and then drive motor moves to motor secondly by second output terminal；It is stored by the first guiding valve direction valve
Fluid in energy device can be input in motor and then after vehicle trouble runs out of steam, and can drive horse temporarily by accumulator
It reaches, ensures continuing to run with for vehicle, additionally due to flow control valve is to be connected to accumulator by check valve, therefore, storing
The adverse current oil circuit to flow control valve will not be generated during energy device drive motor.Therefore, herein described control valve group can
The control strategy of safety and stability is provided accumulator filling liquid and unloading process, and then improves validity and stabilization that accumulator uses
Property.
Description of the drawings
Fig. 1 is the principle schematic of control valve group one embodiment provided by the invention；
Fig. 2 is the structural front view of control valve group one embodiment provided by the invention；
Fig. 3 is the structure top view of control valve group one embodiment provided by the invention；
Fig. 4 is the structure bottom view of control valve group one embodiment provided by the invention；
Fig. 5 is the structure right view of control valve group one embodiment provided by the invention；
Fig. 6 is the structure left view of control valve group one embodiment provided by the invention；
Fig. 7 is the structure rearview of control valve group one embodiment provided by the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " should not only for the convenience of statement
The restriction to the embodiment of the present invention is interpreted as, subsequent embodiment no longer illustrates this one by one.
The problem of the application is directed to currently for accumulator hydraulic control process, such as coal mine 55T stents are removed
Transport the accumulator filling liquid of vehicle, the control of off-load.It is proposed a kind of improved control valve group.It is provided by the invention with reference to shown in Fig. 1
The principle schematic of control valve group one embodiment.It is described to include for accumulator filling liquid and the control valve group of off-load：Flow control
Valve 1 processed, 3 and first guiding valve direction valve 4 of check valve；The input terminal 11 of the flow control valve 1 and the pump for being used to provide oil pressure
91 connections, the first output terminal 13 of the flow control valve 1 are connected to the input terminal 31 of the check valve 3；The check valve 3
Output terminal 32 is connected to the input terminal 41 of accumulator 94 and the first guiding valve direction valve 4；The first guiding valve direction valve 4
Output terminal 42 and the second output terminal 12 of the flow control valve 1 converge and are connected to motor 92；In this way, the oil of 91 output of pump
Liquid is used to be output in accumulator 94 by the first output terminal 11 and check valve 3 of flow control valve 1, is additionally operable to pass through flow
Control valve second output terminal 12 is output in motor 92；Fluid in accumulator 94 is used to input by the first guiding valve direction valve 4
Into motor 92.
Wherein, the check valve 3 is for allowing hydraulic oil to be flowed freely from input terminal 31 to output terminal 32, and it is anti-to end it
To liquid stream, therefore so that the filling liquid of accumulator and the process of drive motor are mutual indepedent.Flow control valve band outside control mouth with
And bypass, throttling, fixed throttle port etc., flow control valve receive 11 input hydraulic pressure flow of input terminal, and defeated for meeting first
The priority traffic of outlet 13.If input flow rate exceeds the demand of priority traffic, extra flow will be through second output terminal 12
Bypass outflow, bypass flow can be used for secondary oil circuit.In addition, outside control mouth, i.e. the 4th end 14, allow to carry out flow control valve remote
Process control.
By above-described embodiment it is found that the herein described control valve group for being used for accumulator filling liquid and off-load, passes through to set and flow
Control valve can carry out preferential level shunt to the oil pressure that pump provides, and preferentially carry out filling liquid to accumulator by check valve, secondly
Hydraulic oil is provided, and then drive motor moves to motor by second output terminal；Pass through the first guiding valve direction valve accumulator
In fluid can be input in motor and then after vehicle trouble runs out of steam, can temporarily by accumulator drive motor,
Ensure continuing to run with for vehicle, additionally due to flow control valve is to be connected to accumulator by check valve, therefore, in accumulator
The adverse current oil circuit to flow control valve will not be generated during drive motor.Therefore, the control valve group can fill accumulator
Liquid and unloading process provide the control strategy of safety and stability, and then improve validity and stability that accumulator uses.
In the application some optional embodiments, the control valve group further includes overflow valve 2；The overflow valve 2 it is defeated
Enter the input terminal 11 that end 21 is connected to the flow control valve, the output terminal 22 of the overflow valve is connected to the flow control valve
Second output terminal 12；The overflow valve 2 is used to control the pressure of the input terminal of the flow control valve.Preferably, it is described to overflow
Stream valve 2 is pilot control formula valve, is realized using balance slide valve structure, and is normally closed pressure-regulating valve.When the pressure of input terminal 21
Reach the setting value of overflow valve 2, overflow valve 2 will be to 93 overflow of fuel tank.In this way, the section that the entrance of control valve group passes through overflow valve
Stream, can adjust inlet pressure, and it is not in the situation of excess pressure to ensure entrance, and then ensure the use peace of control valve group
Entirely.
In the application some optional embodiments, the control valve group further includes accumulator sensing-guide's unloading valve 6；
The control terminal 61 of accumulator sensing-guide's unloading valve 6 is connected to 94 input terminal of accumulator；Accumulator sensing-the guide
The input terminal 62 of unloading valve is connected to the 4th end 14 of the flow control valve；Accumulator sensing-guide's unloading valve it is defeated
Outlet 63 is connected to fuel tank；Accumulator sensing-guide's unloading valve 6 is input to the oil pressure in accumulator for control.In this way,
When the pressure of 94 entrance of accumulator reaches the pressure that accumulator sensing-guide's unloading valve 6 is set, input terminal 62 and output terminal 63
It connects, i.e., accumulator sensing-guide's unloading valve 6 is connected by that will be pumped with fuel tank, makes pump off-load.Optionally, the accumulator
Sensing -6 off-load of guide's unloading valve occupies 30% ratio；Further, 61 pressure of control terminal drops to the 70% of valve setting oil pressure
When following, input terminal 62 will be switched off with output terminal 63 so that pumps to return and gives accumulator filling liquid.In this way, the control valve group energy
Enough ensure that accumulator inlet pressure is maintained in controlled range.Excess pressure is avoided to cause to damage to accumulator.
In the application some optional embodiments, the control valve group further includes throttle valve 5；The accumulator sensing-
The input terminal 62 of guide's unloading valve is connect by the throttle valve 5 with the 4th end 14 of the flow control valve, is flowed for adjusting
Amount control unloading rate.Specifically, 14 unicom of the 4th end of the input terminal 51 of the throttle valve 5 and the flow control valve, defeated
Outlet is communicated with the input terminal 62 of accumulator sensing-guide's unloading valve, since throttle valve is provided with filter core, can be adjusted accordingly
The flow of unloading process, for controlling the speed of off-load.In addition, in the application of outlet throttling, the flow control of fixed throttle port
Valve processed provides accurate flow control.
In the application some optional embodiments, the control valve group further includes the second guiding valve direction valve 8；Described second
The input terminal 82 of guiding valve direction valve is connect with the 4th end 14 of the flow control valve, and output terminal 81 is connected to fuel tank；Described
Two guiding valve direction valves 8 realize off-load for substituting accumulator sensing-guide's unloading valve.Therefore, when accumulator sensing-guide's off-load
It, can be by operating the second guiding valve direction valve 8, after connection, the second guiding valve when valve or system maintenance need to carry out accumulator off-load
The input terminal and output terminal of direction valve 8 communicate, and the fluid of accumulator flows out to outlet by the second guiding valve direction valve 8, returns to oil
Case realizes off-load.
Preferably, the first guiding valve direction valve and the second guiding valve direction valve are the operated direction valve of gas control.It is namely sliding
Valve direction valve is the operated guiding valve direction valve of gas control, belongs to pilot stage 22 logical Pneumatic reversal valves, spring-biased valves.Such valve has
Normally opened to be configured with normally closed two kinds, such valve is used as pilot stage, is often used cooperatively with the main stage valve of pilot control.In this way, it can lead to
Cross the switch control that gas control mode realizes the first guiding valve direction valve and the second guiding valve direction valve.Such as：When system failure, gas
After horse-controlling reaches cisco unity malfunction, the operation of the operated direction valve 4 of gas control, after air source connection, gas control operation can be passed through
The input terminal and output terminal of formula direction valve 4 communicate, and the fluid of accumulator flows out to motor by the operated direction valve 4 of gas control, protect
Demonstrate,prove motor odd-job.
In the application some optional embodiments, the control valve group further includes valve block body 7；The valve block body 7
It is inside provided with and the flow control valve 1, check valve 3, the first guiding valve direction valve 4, overflow valve 2, accumulator sensing-guide's off-load
6th, 5 and second guiding valve direction valve 8 of throttle valve forms the corresponding channel of oil circuit and corresponding mounting hole；For causing the stream
Control valve, check valve, the first guiding valve direction valve, overflow valve, accumulator sensing-guide's off-load, throttle valve and the second guiding valve
Direction valve is integrated by mounting hole in valve block body；That is, oil sources channel is provided in the valve block body, work is led to
Road, drain path, the oily channel of control, measuring pressure passage, drainback passage.In this way so that the valve that valve group uses is cartridge valve, tool
Have it is compact-sized simple, the advantages of occupying little space, can overcome each component dismounting, carry and various pipe fittings it is external its
The difficulty of his valve class.
The valve block body is correspondingly arranged on defeated with the PRESSURE input ports of pump connection, the BY-PASS being connect with motor
Outlet, the STEER implementation of port being connect with accumulator and the DRAIN oil return openings being connect with fuel tank.
With reference to shown in Fig. 2-7, the structural front view of control valve group one embodiment respectively provided by the invention is overlooked
Figure, bottom view, right view, left view and rearview.With reference to Fig. 1 it is found that the course of work of the control valve group includes：Pump work
After work, fluid is passed through into the PRESSURE mouthfuls of input terminals for being pumped into flow control valve 11 and the input terminal 21 of overflow valve, flow
Control valve receives the input flow rate of input terminal 11, and the priority traffic for meeting the first output terminal 13, ensures filling for accumulator
Liquid.When input flow rate is beyond priority traffic demand, the oral bypass of flow control valve second output terminal 12 outflow of extra flow, side
Through-current capacity is used for secondary oil circuit and by BY-PASS mouthfuls of outflow, and work is driven for motor.It is extra after ensureing motor operations
Flow is returned directly to fuel tank 93.After PRESSURE mouthfuls of pressure reach the setting value of overflow valve 2, start to 93 overflow of fuel tank,
Pressure is adjusted by throttling.And accumulator sensing-guide's off-load 6 and throttle valve 5 in STEER oil outlet hypertonia into
Row off-load ensures the stably and controllable of outlet oil pressure.
In the application some optional embodiments, the first pressure tap GP and second is additionally provided in the valve block body
Pressure tap GS, the first pressure tap GP and the second pressure tap GS are connect respectively with external pressure gauge 95, are used to implement control
The monitoring of valve group entrance and outlet pressure.Also the pressure of valve group relevant portion can be monitored at any time, if there is abnormal conditions,
Abnormality processing can be carried out at any time.To sum up, the application of the invention by inserted valve, valve group is highly integrated, it is compact-sized, by pipeline
Valve block internal galleries are converted into, reduces pipeline connection, realizes the filling liquid to accumulation of energy, off-load, emergency protection function, consider week
Entirely, securely and reliably.
Those of ordinary skills in the art should understand that：The discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure is limited to these examples (including claim)；Under the thinking of the present invention, above example
Or it can also be combined between the technical characteristic in different embodiments, and there is different aspect present invention as described above
Many other variations, in order to it is concise they do not provided in details.Therefore, all within the spirits and principles of the present invention,
Any omission for being made, modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
The embodiment of the present invention be intended to cover fall within the broad range of appended claims it is all it is such replace,
Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made
Deng should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of control valve group for being used for accumulator filling liquid and off-load, which is characterized in that including：Flow control valve, check valve with
And the first guiding valve direction valve；The input terminal of the flow control valve is connect with for providing the pump of oil pressure, the flow control valve
The first output terminal be connected to the input terminal of the check valve；The output terminal of the check valve is connected to accumulator and described
The input terminal of one guiding valve direction valve；The output terminal of the first guiding valve direction valve converges with the second output terminal of the flow control valve
Coalescence and it is connected to motor；
The fluid of pump output is additionally operable to for being output in accumulator by the first output terminal and check valve of flow control valve
It is output in motor by flow control valve second output terminal；Fluid in accumulator is used to input by the first guiding valve direction valve
Into motor.
2. control valve group according to claim 1, which is characterized in that further include overflow valve；The input terminal of the overflow valve
The input terminal of the flow control valve is connected to, the output terminal of the overflow valve is connected to the second output of the flow control valve
End；The overflow valve is used to control the pressure of the input terminal of the flow control valve.
3. control valve group according to claim 1, which is characterized in that further include accumulator sensing-guide's unloading valve；It is described
The control terminal of accumulator sensing-guide's unloading valve is connected to accumulator input terminal；Accumulator sensing-guide's unloading valve it is defeated
Enter the 4th end that end is connected to the flow control valve；The output terminal of accumulator sensing-guide's unloading valve is connected to fuel tank；
Accumulator sensing-guide's unloading valve is input to the oil pressure in accumulator for control.
4. control valve group according to claim 3, which is characterized in that further include throttle valve；Accumulator sensing-the guide
The input terminal of unloading valve is connect by the throttle valve with the 4th end of the flow control valve, for adjusting flow control off-load
Speed.
5. control valve group according to claim 3, which is characterized in that further include the second guiding valve direction valve；Described second slides
The input terminal of valve direction valve is connect with the 4th end of the flow control valve, and output terminal is connected to fuel tank；The second guiding valve side
To valve off-load is realized for substituting accumulator sensing-guide's unloading valve.
6. control valve group according to claim 5, which is characterized in that the first guiding valve direction valve and the second guiding valve direction
Valve is the operated direction valve of gas control.
7. control valve group according to claim 5 or 6, which is characterized in that further include valve block body；In the valve block body
It is provided with and the flow control valve, check valve, the first guiding valve direction valve, overflow valve, accumulator sensing-guide's off-load, throttling
Valve and the second guiding valve direction valve form the corresponding channel of oil circuit and corresponding mounting hole；For causing the flow control
Valve, check valve, the first guiding valve direction valve, overflow valve, accumulator sensing-guide's off-load, throttle valve and the second guiding valve direction valve
It is integrated into valve block body by mounting hole；
The valve block body be correspondingly arranged on pump connection PRESSURE input ports, connect with motor BY-PASS delivery outlets,
The STEER implementation of port being connect with accumulator and the DRAIN oil return openings being connect with fuel tank.
8. control valve group according to claim 7, which is characterized in that be additionally provided with the first pressure tap in the valve block body
And second pressure tap, first pressure tap and the second pressure tap are connect respectively with external pressure gauge, are used to implement control
The monitoring of valve group entrance and outlet pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005852.8A CN108131337A (en) | 2018-01-03 | 2018-01-03 | A kind of control valve group for being used for accumulator filling liquid and off-load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810005852.8A CN108131337A (en) | 2018-01-03 | 2018-01-03 | A kind of control valve group for being used for accumulator filling liquid and off-load |
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| Publication Number | Publication Date |
|---|---|
| CN108131337A true CN108131337A (en) | 2018-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810005852.8A Pending CN108131337A (en) | 2018-01-03 | 2018-01-03 | A kind of control valve group for being used for accumulator filling liquid and off-load |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273972A (en) * | 2019-07-08 | 2019-09-24 | 北京金风科创风电设备有限公司 | Damper, tower of wind generating set and wind generating set |
| CN112173088A (en) * | 2020-09-25 | 2021-01-05 | 中国直升机设计研究所 | Combined pressure accumulator with flow rate control function and hydraulic brake system |
| CN114439802A (en) * | 2022-01-29 | 2022-05-06 | 浙江海宏液压科技股份有限公司 | Pressure control structure of prefill valve |
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| CN114439802B (en) * | 2022-01-29 | 2022-07-26 | 浙江海宏液压科技股份有限公司 | Pressure control structure of prefill valve |
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