CN203729370U - Excavator hydraulic system - Google Patents
Excavator hydraulic system Download PDFInfo
- Publication number
- CN203729370U CN203729370U CN201320887851.3U CN201320887851U CN203729370U CN 203729370 U CN203729370 U CN 203729370U CN 201320887851 U CN201320887851 U CN 201320887851U CN 203729370 U CN203729370 U CN 203729370U
- Authority
- CN
- China
- Prior art keywords
- control system
- oil pump
- excavator hydraulic
- hydraulic system
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004146 energy storage Methods 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The utility model discloses an excavator hydraulic system. The excavator hydraulic system comprises an engine, an oil pump, a control system and an execution mechanism; the oil pump is connected to an energy storage device accumulator group through a one-way valve, an overflow valve is mounted between the oil pump and the one-way valve, the accumulator group is connected to the execution mechanism by virtue of a valve control system, the valve control system is connected to a pressure monitoring system, and the pressure monitoring system and the engine are connected to the control system. The excavator hydraulic system is stable and reliable in working and long in service life.
Description
Technical field
The utility model relates to a kind of engineering machinery, especially relates to a kind of excavator hydraulic system.
Background technology
Hydraulic crawler excavator is as one of important equipment of engineering machinery, and work under bad environment, energy consumption is large, exhaust emissions is serious, and the energy-saving and emission-reduction of research excavator have very high economic worth and the value of environmental protection.In prior art, utilize the energy-conservation parts energy such as swing arm, dipper, revolution that has of accumulator to reclaim, the energy that is also only confined to single parts reclaims to be optimized, and the recycling ability of energy a little less than, improve the occasion less.When excavator operation, load variations is violent, usually causes the motor of fixing throttle position to fluctuate on speed governing curve, can not steady operation on load curve, energy loss, fuel economy is low.Related data shows, nearly 40% fault is from hydraulic system for engineering machinery, and wherein major part is because hydraulic shock and system heating cause.
Summary of the invention
The purpose of this utility model is: the excavator hydraulic system that a kind of reliable and stable, long service life is provided.
The technical solution of the utility model is: comprise motor, oil pump, control system and executing agency, motor driven oil pump, oil pump connects energy storage device Accumulator arrangements by one way valve, between oil pump and one way valve, overflow valve is housed, Accumulator arrangements connects executing agency by valve control system, executing agency comprises running motor, rotation motor, boom cylinder, bucket arm cylinder, bucket cylinder, valve control system Bonding pressure monitoring system, pressure monitor system and motor connection control system.
Further, oil pump is high pressure quantitative plunger pump.
Further, Accumulator arrangements is many bag type accumulators.
Further, valve control system is six logical banked direction control valves.
Further, pressure monitor system comprises pressure sensor and transmitter.
Further, control system is PLC controller.
The beneficial effects of the utility model are: the utility model is first hydraulic pressure potential energy by oil pump motor kinetic transformation, then by Accumulator arrangements, this part potential energy is stored, and then by valve control system, the potential energy of Accumulator arrangements is distributed according to need to executing agency.Meanwhile, pressure monitor system changes the pressure of executive component to feed back to control system, is Accumulator arrangements energy storage by control system according to pressure feedback control engine.Motor, in the time that excavator load variations is violent, is affected by load no longer, and hydraulic shock and overflow heating are avoided in energy smooth working, have protected hydraulic system and element, reduce fault rate, and the application life of having improved Hydraulic Elements and machine components.Can reduce installed power, cost-saving, be applicable to operating mode complexity, the more construction machinery hydraulic system of load sudden change situation.
Brief description of the drawings
Fig. 1 is hydraulic schematic diagram of the present utility model.
In figure, mark: 1. motor; 2. shaft coupling; 3. oil pump; 4. one way valve; 5. overflow valve; 6. electromagnetic valve; 7. Accumulator arrangements; 8. valve control system; 9. executing agency; 10. pressure monitor system; 11. control systems.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, can find out from hydraulic schematic diagram of the present utility model shown in Fig. 1, the utility model comprises motor 1, oil pump 3, control system 11 and executing agency 9, motor 1 is connected and is driven oil pump 3 by shaft coupling 2, oil pump 3 adopts high pressure quantitative plunger pump, and executing agency 9 comprises running motor, rotation motor, boom cylinder, bucket arm cylinder, bucket cylinder.Oil pump 3 connects energy storage device Accumulator arrangements 7 by one way valve 4, Accumulator arrangements 7 is many bag type accumulators, between oil pump 3 and one way valve 4, overflow valve 5 is housed, Accumulator arrangements 7 connects executing agency 9 by valve control system 8, valve control system 8 is six logical banked direction control valves, valve control system 8 Bonding pressure monitoring systems 10.Pressure monitor system 10 comprises pressure sensor and transmitter, pressure monitor system 10 and motor 1 connection control system 11, and control system 11 adopts PLC controller.
Operating principle of the present utility model is: motor 1 drives oil pump 3 to rotate; oil pump 3 through one way valve 4 to energy storage device Accumulator arrangements 7 fuel feeding; overflow valve 5 is used as safety valve; in the time that pressure monitor system 10 detects that Accumulator arrangements 7 reaches setting pressure, control system 11 is shut down according to pressure feedback information control engine 1.When driver's operation excavator operation, provide pressure oil by Accumulator arrangements 7, distribute according to need to each executing agency 9 by valve control system 8, pressure monitor system 10 is monitored the pressure information of executing agency's 9 each actions always, Real-time Feedback is to control system 11, when feedback pressure is during lower than operating pressure, motor 1 starts as Accumulator arrangements 7 fuel feeding ftercompctions, again reaches setting pressure.
Claims (6)
1. an excavator hydraulic system, comprise motor (1), oil pump (3), control system (11) and executing agency (9), motor (1) drives oil pump (3), it is characterized in that: described oil pump (3) connects energy storage device Accumulator arrangements (7) by one way valve (4), between oil pump (3) and one way valve (4), overflow valve (5) is housed, Accumulator arrangements (7) connects executing agency (9) by valve control system (8), executing agency (9) comprises running motor, rotation motor, boom cylinder, bucket arm cylinder, bucket cylinder, valve control system (8) Bonding pressure monitoring system (10), pressure monitor system (10) and motor (1) connection control system (11).
2. excavator hydraulic system according to claim 1, is characterized in that: described oil pump (3) is high pressure quantitative plunger pump.
3. excavator hydraulic system according to claim 1, is characterized in that: described Accumulator arrangements (7) is many bag type accumulators.
4. excavator hydraulic system according to claim 1, is characterized in that: described valve control system (8) is six logical banked direction control valves.
5. excavator hydraulic system according to claim 1, is characterized in that: described pressure monitor system (10) comprises pressure sensor and transmitter.
6. excavator hydraulic system according to claim 1, is characterized in that: described control system (11) is PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887851.3U CN203729370U (en) | 2013-12-31 | 2013-12-31 | Excavator hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320887851.3U CN203729370U (en) | 2013-12-31 | 2013-12-31 | Excavator hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203729370U true CN203729370U (en) | 2014-07-23 |
Family
ID=51199455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320887851.3U Expired - Lifetime CN203729370U (en) | 2013-12-31 | 2013-12-31 | Excavator hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203729370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711173A (en) * | 2013-12-31 | 2014-04-09 | 山东宏康机械制造有限公司 | Excavator hydraulic system |
-
2013
- 2013-12-31 CN CN201320887851.3U patent/CN203729370U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711173A (en) * | 2013-12-31 | 2014-04-09 | 山东宏康机械制造有限公司 | Excavator hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160918 Address after: Room 2, unit 46, building No. 271000, mountain villa, Taishan District, Tai'an, Shandong Patentee after: Kang Zhenhui Address before: 271000 Taishan Youth Park, Daiyue District, Shandong, China, Patentee before: Shandong Hongkang Machinery Manufacturing Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
|
| CX01 | Expiry of patent term |