CN107882101B - Excavator main pump overflow recognition methods - Google Patents
Excavator main pump overflow recognition methods Download PDFInfo
- Publication number
- CN107882101B CN107882101B CN201711054906.1A CN201711054906A CN107882101B CN 107882101 B CN107882101 B CN 107882101B CN 201711054906 A CN201711054906 A CN 201711054906A CN 107882101 B CN107882101 B CN 107882101B
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- China
- Prior art keywords
- pump
- pilot pressure
- overflow
- main pump
- excavator
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Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000004064 recycling Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 6
- 239000000446 fuel Substances 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention relates to excavator main pump overflow recognition methods, to solve the problems, such as existing excavator main pump overflow identification lag；A kind of recognition methods of excavator main pump overflow is provided, main pump includes left pump and right pump, and steps are as follows: acquisition engine speed, each operational motion pilot pressure value of pressure value and excavator of left pump and right pump；When engine speed value is lower than, programmed values, left pump pressure and right pump pressure are above programmed values and at least one operational motion pilot pressure value is higher than programmed values, then are determined as that main pump is in overflow situation.The present invention can identify the overflow situation of main pump in advance, so as to more rapidly reduce pumpage, make engine speed held stationary, will not generate it is larger fall speed, to save fuel consumption.
Description
Technical field
The present invention relates to a kind of excavator hydraulic systems, more specifically to a kind of excavator main pump overflow identification side
Method.
Background technique
When excavator at work, if main pump generates overflow, hydraulic oil can be directly over overflow valve and return to fuel tank, will not
Equipment is removed, so that the waste of energy is generated, and if going the output displacement for reducing pump that can lead according to overflow situation not in time
Cause engine moment generate it is larger fall speed, cause engine fuel consumption to increase, and influence guest operation experience.
Existing main pump overflow recognition methods is acquisition main pump outlet pressure, and judgement is overflow when main pump outlet pressure close to main pump
After flowing the setting pressure of valve and being kept for a period of time, just thinks that main pump is in overflow situation, go to go by controller later again
Reduce the discharge capacity of pump, thus reduce the speed of falling of engine, but this method can generate lag when judging main pump overflow, so
Can still make engine generate it is larger fall speed, cause engine fuel consumption to increase, and influence guest operation experience.
Summary of the invention
The technical problem to be solved by the present invention is to existing excavator main pump overflow identify lag aiming at the problem that, and provide one
The recognition methods of the timely and effective identification excavator main pump overflow of kind.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of identification side of excavator main pump overflow
Method, the main pump include left pump and right pump, it is characterised in that the recognition methods following steps:
S1: acquisition engine speed, each operational motion pilot pressure value of pressure value and excavator of left pump and right pump；
S2: when engine speed value lower than programmed values, left pump pressure and right pump pressure be above programmed values and
At least one operational motion pilot pressure value is higher than programmed values, then is determined as that main pump is in overflow situation.
Further, in the recognition methods of above-mentioned excavator main pump overflow, the overflow situation include overflow situation and
I.e. by overflow situation.
Further, in the recognition methods of above-mentioned excavator main pump overflow, each operational motion pilot pressure value includes scraper bowl
It opens pilot pressure, scraper bowl recycling pilot pressure, dipper and opens pilot pressure, dipper recycling pilot pressure, swing arm upward leader
Pressure, swing arm decline pilot pressure, left lateral walks pilot pressure, right lateral walks pilot pressure, Zuo Huizhuan pilot pressure and right-hand rotation are first
Pilot power.
Further, in the recognition methods of above-mentioned excavator main pump overflow, in step sl, collected engine is turned
It is fast, it is left pump and right pump each operational motion pilot pressure value of pressure value and excavator and corresponding default detection range into
Row comparison carries out step S2 if each parameter value that detection obtains is in corresponding default detection range, otherwise not
Carry out step S2, namely do not use this method carry out main pump whether overflow is identified.
Compared with prior art, the present invention method introduces engine speed and pilot pressures, so can identify in advance
The overflow situation of main pump makes engine speed held stationary so as to more rapidly reduce pumpage, will not generate it is larger fall speed,
To save fuel consumption.
Detailed description of the invention
Fig. 1 is the flow chart of the recognition methods of excavator main pump overflow of the present invention.
Fig. 2 is the flow chart of the recognition methods of excavator main pump overflow of the present invention.
Fig. 3 is the flow chart of the recognition methods of excavator main pump overflow of the present invention.
Parts title and serial number in figure:
Scraper bowl opens pilot pressure sensor 1, scraper bowl recycling pilot pressure sensor 2, dipper and opens pilot pressure sensing
Device 3, dipper recycling pilot pressure sensor 4, swing arm upward leader pressure sensor 5, swing arm decline pilot pressure sensor 6,
Left revolution pilot pressure sensor 7, right-hand rotation pilot pressure sensor 8, left lateral walks pilot pressure sensor 9, right lateral walks guide
Pressure sensor 10, left main pump pressure sensor 11, right main pump pressure sensor 12, engine speed sensor 13, power supply are opened
Close 14, KEY_ON switch 15, controller 16.
Specific embodiment
Illustrate specific embodiment with reference to the accompanying drawing.
As shown in figure 3, excavator includes controller, scraper bowl connected to the controller opening pilot pressure biography in the present embodiment
Sensor 1, scraper bowl recycling pilot pressure sensor 2, dipper opens pilot pressure sensor 3, dipper recycles pilot pressure sensor
4, swing arm upward leader pressure sensor 5, swing arm decline pilot pressure sensor 6, Zuo Huizhuan pilot pressure sensor 7, right time
Turn pilot pressure sensor 8, left lateral walks pilot pressure sensor 9, right lateral walks pilot pressure sensor 10, left pump pressure sensor
11, right pump pressure sensor 12, engine speed sensor 13 and 14 and of power switch for connecting to power supply controller 16
KEY_ON switch 15.Wherein engine speed sensor 13 is for detecting engine speed, left pump pressure sensor 11 and right pump
Pressure sensor 12 is respectively used to detect left pump pump intake pressure and right pump pump intake pressure.Scraper bowl opens pilot pressure sensor 1, shovel
Bucket recycling pilot pressure sensor 2, dipper open pilot pressure sensor 3, dipper recycles pilot pressure sensor 4, on swing arm
Rise pilot pressure sensor 5, swing arm declines pilot pressure sensor 6, Zuo Huizhuan pilot pressure sensor 7, right-hand rotation elder generation pilot
Force snesor 8, left lateral walk pilot pressure sensor 9, right lateral walk pilot pressure sensor 10 be respectively used to detection carry out scraper bowl beat
It opens, scraper bowl recycling, dipper is opened, dipper recycling, swing arm rises, swing arm decline, left revolution elder generation, right-hand rotation, left lateral is walked, right lateral is walked
Deng the pilot pressure corresponded to when operating in guide's oil circuit.
Steps are as follows for the recognition methods of excavator main pump overflow:
Power on rear controller acquisition engine speed, the pressure value and each operational motion pilot pressure value of left pump and right pump
Pilot pressure, scraper bowl recycling pilot pressure, dipper, which are opened, including scraper bowl opens pilot pressure, dipper recycling pilot pressure, swing arm
Upward leader pressure, swing arm decline pilot pressure, left lateral walks pilot pressure, right lateral walks pilot pressure, Zuo Huizhuan pilot pressure and
Each operational motion pilot pressure value of the excavators such as right-hand rotation pilot pressure.By collected engine speed, left pump and right pump
Pressure value and each operational motion pilot pressure value of excavator are compared with corresponding default detection range, if detecting
To each parameter value then carry out subsequent step in corresponding default detection range, it is on the contrary then return to error value.It is default
Detection range is preset according to the design parameter of excavator
When detecting obtained each parameter value in corresponding default detection range, then further compared, when
Engine speed value is above programmed values lower than programmed values, left pump pressure and right pump pressure and at least one is operated
It acts pilot pressure value and is higher than programmed values, be then determined as that main pump is in overflow situation.Overflow situation includes overflow situation
With i.e. by overflow situation.
Compared with prior art, the present invention method introduces engine speed and pilot pressures, so can identify in advance
The overflow situation of main pump makes engine speed held stationary so as to more rapidly reduce pumpage, will not generate it is larger fall speed,
To save fuel consumption.
Claims (4)
1. a kind of recognition methods of excavator main pump overflow, the main pump includes left pump and right pump, it is characterised in that the identification
Method following steps:
S1: acquisition engine speed, each operational motion pilot pressure value of pressure value and excavator of left pump and right pump；
S2: when engine speed value is above programmed values and at least lower than programmed values, left pump pressure and right pump pressure
There is an operational motion pilot pressure value to be higher than programmed values, is then determined as that main pump is in overflow situation.
2. the recognition methods of excavator main pump overflow according to claim 1, it is characterised in that the overflow situation includes
Overflow situation and i.e. by overflow situation.
3. the recognition methods of excavator main pump overflow according to claim 1, it is characterised in that each operational motion elder generation pilot
Force value include scraper bowl open pilot pressure, scraper bowl recycling pilot pressure, dipper open pilot pressure, dipper recycling pilot pressure,
Swing arm upward leader pressure, swing arm decline pilot pressure, left lateral walks pilot pressure, right lateral walks pilot pressure, the first pilot of left revolution
Power and right-hand rotation pilot pressure.
4. the recognition methods of excavator main pump overflow according to any one of claim 1 to 3, it is characterised in that in step
In S1, by collected engine speed, it is left pump and right pump each operational motion pilot pressure value of pressure value and excavator with
Corresponding default detection range compares, if each parameter value that detection obtains is in corresponding default detection range
Inside then carry out step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054906.1A CN107882101B (en) | 2017-11-01 | 2017-11-01 | Excavator main pump overflow recognition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054906.1A CN107882101B (en) | 2017-11-01 | 2017-11-01 | Excavator main pump overflow recognition methods |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107882101A CN107882101A (en) | 2018-04-06 |
| CN107882101B true CN107882101B (en) | 2019-11-19 |
Family
ID=61783472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711054906.1A Active CN107882101B (en) | 2017-11-01 | 2017-11-01 | Excavator main pump overflow recognition methods |
Country Status (1)
| Country | Link |
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| CN (1) | CN107882101B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111335397A (en) * | 2020-03-13 | 2020-06-26 | 三一重机有限公司 | Excavator overflow control method and device, excavator and readable storage medium |
| CN111999219B (en) * | 2020-07-13 | 2021-09-14 | 山东大学 | Smoke intensity detection method and system for engineering machinery |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2253854B1 (en) * | 2008-02-20 | 2014-09-10 | Komatsu, Ltd. | Oil pressure system and valve assembly used for oil pressure system |
| CN102251546B (en) * | 2011-06-14 | 2013-04-24 | 三一重机有限公司 | Control method for reducing oil consumption of excavator engine |
| CN102493523B (en) * | 2011-11-25 | 2013-12-04 | 徐州徐工挖掘机械有限公司 | Novel excavator current-limiting control system |
| CN102588370B (en) * | 2012-02-24 | 2015-11-25 | 三一重工股份有限公司 | The responsive preferential steering hydraulic system of a kind of dynamic load |
| JP5913592B2 (en) * | 2012-06-22 | 2016-04-27 | 日立建機株式会社 | Construction machinery |
| KR101840247B1 (en) * | 2016-01-20 | 2018-03-20 | 가부시키가이샤 고마쓰 세이사쿠쇼 | Engine control device for work machine, work machine, and method for controlling engine of work machine |
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| Publication number | Publication date |
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| CN107882101A (en) | 2018-04-06 |
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Effective date of registration: 20240530 Address after: 545007 the Guangxi Zhuang Autonomous Region Liuzhou City Liu Tai Road No. 1 Patentee after: GUANGXI LIUGONG MACHINERY Co.,Ltd. Country or region after: China Patentee after: Guangxi Liugong Yuanxiang Technology Co.,Ltd. Address before: 545007 the Guangxi Zhuang Autonomous Region Liuzhou City Liu Tai Road No. 1 Patentee before: GUANGXI LIUGONG MACHINERY Co.,Ltd. Country or region before: China |
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