CN208686682U - There are two types of the hydraulic control systems of operating mode for tool - Google Patents
There are two types of the hydraulic control systems of operating mode for tool Download PDFInfo
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- CN208686682U CN208686682U CN201821451172.0U CN201821451172U CN208686682U CN 208686682 U CN208686682 U CN 208686682U CN 201821451172 U CN201821451172 U CN 201821451172U CN 208686682 U CN208686682 U CN 208686682U
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- hydraulic control
- pipeline
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Abstract
The utility model relates to a kind of tool, there are two types of the hydraulic control systems of operating mode, which solve the hydraulic system low efficiencys in existing airport equipment, the technical problem of energy-saving effect difference, it includes shuttle valve, throttle valve, electromagnetic proportion relief valve and Variable plunger pump, Variable plunger pump includes flow signal valve and oil feed line, branch is connected on oil feed line, branch is equipped with oil outlet M；The throttle valve is equipped with the port a and the port b, the port a of throttle valve passes through the oil outlet M connection of pipeline and Variable plunger pump, the port b of throttle valve is connect with electromagnetic proportion relief valve, the first entrance of shuttle valve is connected by the port b of pipeline and throttle valve, the outlet of shuttle valve is connected by the end e of pipeline and flow signal valve, and the end f of flow signal valve is connect with oil feed line；It is applicable to various variable delivery hydraulic systems.
Description
Technical field
The utility model relates to a kind of hydraulic control systems, specifically, being that there are two types of the hydraulic of operating mode for a kind of tool
Control system.
Background technique
As the rapid development infrastructure construction of China's economy puts more effort, rapid newly-built, the airport equipment on airport
Demand be continuously increased.
How to make equipment more efficient more energy efficient, it has also become those skilled in the art's technical problem urgently to be resolved.Therefore, if
Hydraulic system in standby also must be energy-efficient.However, existing hydraulic system low efficiency, energy-saving effect are poor.
Summary of the invention
The utility model is exactly to solve the hydraulic system low efficiency in existing airport equipment, the technology of energy-saving effect difference
Problem, providing the more efficient more energy efficient tool of one kind, there are two types of the hydraulic control systems of operating mode.
The technical solution of the utility model is, including shuttle valve, throttle valve, electromagnetic proportion relief valve and Variable plunger pump, becomes
Amount plunger pump includes flow signal valve and oil feed line, and branch is connected on oil feed line, and branch is equipped with oil outlet M；The section
It flows valve and is equipped with the port a and the port b, the port a of throttle valve passes through the oil outlet M connection of pipeline and Variable plunger pump, the b of throttle valve
Port is connect with electromagnetic proportion relief valve, and the first entrance of shuttle valve is connected by the port b of pipeline and throttle valve, the outlet of shuttle valve
It is connected by the end e of pipeline and flow signal valve, the end f of flow signal valve is connect with oil feed line.
Preferably, having there are two types of the hydraulic control system of operating mode further includes PLC controller, and electromagnetic proportion relief valve is logical
Signal wire is crossed to be electrically connected with PLC controller.
Preferably, electromagnetic proportion relief valve is electrically connected by Canopen bus with PLC controller.
Preferably, the second entrance of shuttle valve has executing agency's shuttle valve by piping connection.
Preferably, having there are two types of the hydraulic control system of operating mode further includes fuel tank, and Variable plunger pump includes dispenser pump
It is pumped with load-reacting；The input terminal of dispenser pump is connect by pipeline with fuel tank, and output end is become by pipeline and load-sensitive
The input terminal connection of amount pump；Oil feed line is connect with the output end that load-reacting pumps.
The beneficial effects of the utility model are: the advantages of being provided simultaneously with Ioad-sensing control and Isobarically Control, for difference
Operating condition, different executing agencies uses different control modes, flexible and convenient to use, reached energy conservation, efficient purpose,
A large amount of fluid pressure line can be saved simultaneously.Suitable for various variable delivery hydraulic systems, it is particularly suitable for that cloth tube space is insufficient to be set
It is standby.
The utility model further feature and aspect, by the description of the specific embodiment below with reference to attached drawing,
It is clearly stated that.
Detailed description of the invention
Fig. 1 is that there are two types of the structural schematic diagrams of the hydraulic control system of operating mode for tool；
Symbol description in figure:
1. shuttle valve, 2. throttle valves, 3. electromagnetic proportion relief valves, 4. Variable plunger pumps, 401. load-reactings pump, 402.
Dispenser pump, 403. flow signal valves, 404. oil feed lines, 5. fuel tanks, 6. walking proportional reversing valves, 7. running motors, 8. other
Executing agency, 9. other executing agency's reversal valves, 10. lifting proportional reversal valves, 11. lifting cylinders, 12. executing agency's shuttle valves,
13. going up and down shuttle valve, 14. walking shuttle valves.LS indicates that actuator load sensitive signal, LS1 indicate the lifting of executing agency in figure
Feedback signal, LS2 indicate the walking feedback signal of executing agency.
Specific embodiment
Referring to the drawings, the utility model is described in further detail with specific embodiment.
As shown in Figure 1, tool there are two types of operating mode hydraulic control system include shuttle valve 1, throttle valve 2, solenoid-operated proportional overflow
Flow valve 3, Variable plunger pump 4, fuel tank 5 and PLC controller.
Be hydraulically controlled system control load include: walking proportional reversing valve 6, running motor 7, other executing agencies 8,
Other executing agency's reversal valves 9, lifting proportional reversal valve 10, lifting cylinder 11, lifting shuttle valve 13 and lifting proportional reversal valve 10
Connection, walking shuttle valve 14 are connect with walking proportional reversing valve 6.
Electromagnetic proportion relief valve 3 is connect by Canopen bus with PLC controller.Walking proportional reversing valve 6, lifting ratio
Example reversal valve 10 is connect by Canopen bus with PLC controller.
It is instructed it should be noted that being not limited to send using PLC controller, other controllers can also be used, such as
Single-chip microcontroller, ARM, DSP etc..
Skilled person will appreciate that Variable plunger pump 4 includes load-reacting pump 401, dispenser pump 402 and flow
Signal valve 403, Variable plunger pump 4 are equipped with oil feed line 404, and there are two branch, two branches go out for connection on oil feed line 404
Mouth is oil outlet M, oil outlet A respectively.The input terminal of dispenser pump 402 connect by pipeline with fuel tank 5, output end pass through pipeline and
The input terminal connection of load-reacting pump 401.Oil feed line 404 is connect with the output end of load-reacting pump 401.
Throttle valve 2 is equipped with the port a and the port b, and the port a of throttle valve 2 passes through the oil outlet M of pipeline and Variable plunger pump 4
Connection, the port b of throttle valve 2 is connect with electromagnetic proportion relief valve 3.The first entrance of shuttle valve 1 passes through the b of pipeline and throttle valve 2
Port connection, the second entrance of shuttle valve 1 are connect by pipeline with the outlet of executing agency shuttle valve 12, and the outlet of shuttle valve 1 passes through pipe
Road is connect with the port X of Variable plunger pump 4.
The first entrance of executing agency's shuttle valve 12 is connect with lifting shuttle valve 13, and second entrance is connect with walking shuttle valve 14.
The course of work of hydraulic control system is described below.
For lesser, the working time is short, valve block in the executing agency of same position, can not use Isobarically Control,
The installation that pipeline can be reduced in this way avoids excessive pipeline from causing mixed and disorderly arrangement, and fast response time.Specifically controlled
Journey is as follows:
The hydraulic oil of the oil outlet M output of 4 oil feed line of Variable plunger pump reaches the port a of throttle valve 2, then from throttling
The port b of valve 2 exports, and electromagnetic proportion relief valve 3 is given the pressure signal of system needs by PLC controller through Canopen bus
Value.The pressure of the port b of throttle valve 2 is given value, and the port X which passes to Variable plunger pump 4 through shuttle valve 1 acts on
The end e of flow signal valve 403, to reach balance, the end the f pump discharge pressure of flow signal valve 403 will be improved, and make e end pressure
It is worth (b point pressure) plus spring force is equal to f side pressure force value, f side pressure force value is equal to 4 outlet pressure of Variable plunger pump (end f and fuel feed pump
Road 404 connects), to realize that definite value provides pump discharge pressure.The effect of throttle valve 2 is: 1, branch pump discharge oil being allowed to form pressure
Difference, pressure difference are the spring force of flow signal valve 403；2, the flow of the branch is limited, electromagnetic proportion relief valve 3 belongs to small stream
Valve is measured, fully opened type is belonged to when no signal, the necessary very little of the flow of the branch cannot form back pressure at the end b of throttle valve 2 at this time.
Load for walking mechanism, can use load-sensitive and constant pressure complex controll, and Isobarically Control can improve walking
The speed and acceleration of mechanism, because when load sensitive system controls, when walking proportional reversing valve 6 opens to the maximum location negative
After carrying pressure and pump discharge pressure balance, pump discharge pressure just will not rise again at this time, but also not up to required speed, just must
Electromagnetic proportion relief valve 3 must be delivered a signal to by PLC deliver a signal to give and pump higher pressure value, increase walking and commutates
The pressure difference at valve both ends realizes the increase of flow, and then realizes the increase of speed, i.e., walking proportional reversing valve 6 be open it is certain before
It puts, Isobarically Control can bring higher speed than Ioad-sensing control, and acceleration will also be promoted.But solenoid-operated proportional overflow
Speed needed for the not so high satisfaction of 3 pressure of valve.
When encountering climbing or crossing obstacle, load sensitive system will work, and be supplied to the higher pressure of Variable plunger pump 4
For power to get over abrupt slope and surmount obstacles, which has reached efficient purpose；
Repeatedly reciprocal long time running uses Ioad-sensing control, at this time electromagnetic proportion relief valve to the needs such as lifting action
3 given pressure parameter values are 0, control the pressure of Variable plunger pump 4 by load-sensitive completely, have accomplished so to greatest extent
Energy conservation.
The above is not intended to limit the utility model only to the preferred embodiment of the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.
Claims (5)
1. there are two types of the hydraulic control systems of operating mode for a kind of tool, characterized in that overflow including shuttle valve, throttle valve, solenoid-operated proportional
It flows valve and Variable plunger pump, the Variable plunger pump includes flow signal valve and oil feed line, be connected on the oil feed line
Branch, the branch are equipped with oil outlet M；The throttle valve is equipped with the port a and the port b, and the port a of throttle valve by pipeline and becomes
The oil outlet M connection of plunger pump is measured, the port b of throttle valve is connect with electromagnetic proportion relief valve, and the first entrance of the shuttle valve is logical
The port b for crossing pipeline and throttle valve connects, and the outlet of shuttle valve is connected by the end e of pipeline and flow signal valve, the flow letter
The end f of number valve is connect with oil feed line.
2. there are two types of the hydraulic control systems of operating mode for tool according to claim 1, which is characterized in that described to have two
The hydraulic control system of kind operating mode further includes PLC controller, and the electromagnetic proportion relief valve is controlled by signal wire and PLC
Device electrical connection.
3. there are two types of the hydraulic control systems of operating mode for tool according to claim 2, which is characterized in that the electromagnetism ratio
Example overflow valve is electrically connected by Canopen bus with PLC controller.
4. there are two types of the hydraulic control systems of operating mode for tool according to claim 1 or 2, which is characterized in that the shuttle
The second entrance of valve has executing agency's shuttle valve by piping connection.
5. there are two types of the hydraulic control systems of operating mode for tool according to claim 1 or 2, which is characterized in that the tool
Hydraulic control system there are two types of operating mode further includes fuel tank, and the Variable plunger pump includes dispenser pump and load-reacting
Pump；The input terminal of the dispenser pump is connect by pipeline with fuel tank, the input that output end passes through pipeline and load-reacting pump
End connection；The oil feed line is connect with the output end that load-reacting pumps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451172.0U CN208686682U (en) | 2018-09-05 | 2018-09-05 | There are two types of the hydraulic control systems of operating mode for tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821451172.0U CN208686682U (en) | 2018-09-05 | 2018-09-05 | There are two types of the hydraulic control systems of operating mode for tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686682U true CN208686682U (en) | 2019-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821451172.0U Active CN208686682U (en) | 2018-09-05 | 2018-09-05 | There are two types of the hydraulic control systems of operating mode for tool |
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| CN (1) | CN208686682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274210A1 (en) * | 2021-06-28 | 2023-01-05 | 湖南三一中型起重机械有限公司 | Hydraulic system capable of multi-stage pressure control and pressure speed regulation, and working machine |
-
2018
- 2018-09-05 CN CN201821451172.0U patent/CN208686682U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274210A1 (en) * | 2021-06-28 | 2023-01-05 | 湖南三一中型起重机械有限公司 | Hydraulic system capable of multi-stage pressure control and pressure speed regulation, and working machine |
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