CN109594607A - A kind of excavator walking Hydraulic pump fault detection method and excavator - Google Patents
A kind of excavator walking Hydraulic pump fault detection method and excavator Download PDFInfo
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- CN109594607A CN109594607A CN201811543162.4A CN201811543162A CN109594607A CN 109594607 A CN109594607 A CN 109594607A CN 201811543162 A CN201811543162 A CN 201811543162A CN 109594607 A CN109594607 A CN 109594607A
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- Prior art keywords
- hydraulic pump
- excavator
- walking
- measured
- fault detection
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Classifications
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- 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
-
- 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
-
- 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
- E02F9/26—Indicating devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The present invention relates to engineering machinery fields, disclose a kind of excavator walking Hydraulic pump fault detection method and excavator, method includes the following steps: control excavator works under specified operating condition, and obtain the reality output oil pressure of walking hydraulic pump to be measured under the specified operating condition；Compare the theoretical output oil pressure and the difference of the reality output oil pressure and the size of preset difference value under the specified operating condition, if the difference is more than or equal to the preset difference value, there are the relatively low failures of working efficiency for walking hydraulic pump to be measured.By walking hydraulic pump, the variation of output oil pressure under specified operating condition judges whether walking efficiency of hydraulic pump is relatively low to the present invention, confirmation walking hydraulic pump whether there is the relatively low failure of working efficiency, the working efficiency that can accurately judge hydraulic pump effectively avoids walking hydraulic pump permanent damages；Without adding flow sensor, excavator increased costs are not will cause.
Description
Technical field
The present invention relates to engineering machinery field more particularly to a kind of excavator walking Hydraulic pump fault detection method and excavations
Machine.
Background technique
In existing electronic control system of excavator, sensor mainly has guide's output oil pressure sensor of control handle, and row
The high pressure sensor of hydraulic pump is walked, there is no the flow sensor of measurement walking hydraulic pump flow and measurement walking hydraulic pump are oblique
The angle sensor of disk pivot angle, therefore be difficult intuitively to detect the changes in flow rate situation of walking hydraulic pump, and hydraulic pump of walking
Flow directly affect walking hydraulic pump working efficiency.If, which there is abrasion, clamping stagnation or leakage etc., in walking hydraulic pump to lead
The flow of walking hydraulic pump is caused to reduce, working efficiency reduces, and serious person will lead to the damage of walking hydraulic pump and can not work.
Therefore, a kind of dredger walking Hydraulic pump fault detection method and excavator are needed to solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of excavator walking Hydraulic pump fault detection method and excavators, are able to solve
Existing electronic control system of excavator is unable to measure walking hydraulic pump flow because not installing flow sensor, hydraulic so as to cause walking
The problem of pump work efficiency reduces.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of excavator walking Hydraulic pump fault detection method, comprising the following steps:
Control excavator works under specified operating condition, and obtains the reality output of walking hydraulic pump to be measured under the specified operating condition
Oil pressure；
Compare the theoretical output oil pressure and the difference of reality output oil pressure and the size of preset difference value under the specified operating condition, if
The difference is more than or equal to the preset difference value, then there are the relatively low failures of working efficiency for walking hydraulic pump to be measured.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, the specified operating condition refers to
Be to set excavator to preset gear, the gas pedal of oil circuit is where controlling walking hydraulic pump to be measured to preset accelerator open degree
Work.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, if the difference is less than
The preset difference value, then walking hydraulic pump to be measured is normal.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, exist in control excavator
Before the step of working under specified operating condition, the input current of all walking hydraulic pumps of excavator is set as zero；
After controlling the step of excavator works under specified operating condition, walking hydraulic pump to be measured is controlled with predetermined current work
Make.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, walking liquid to be measured is controlled
The step of press pump is worked with predetermined current include:
The input current of walking hydraulic pump to be measured is set as predetermined current, and waits preset time.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, walking hydraulic pump to be measured
When with predetermined current work, the discharge capacity of walking hydraulic pump to be measured is maximum.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, walking to be measured is being controlled
It, will be by walking hydraulic pump driving to be measured before the step of gas pedal of oil circuit where hydraulic pump is worked with default accelerator open degree
Crawler belt is hanging.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, the preset gear is
Highest gear, the default accelerator open degree are maximum throttle aperture.
As a kind of optimal technical scheme of above-mentioned excavator walking Hydraulic pump fault detection method, more theoretical output oil
The step of pressing the size with the difference of the reality output oil pressure of walking hydraulic pump to be measured and preset difference value, comprising:
Repeatedly measure the reality output oil pressure of walking hydraulic pump to be measured under the specified operating condition, and averaged；
Compare the size of the difference of the theoretical output oil pressure and average value of walking hydraulic pump to be measured under the specified operating condition.
To achieve the goals above, the present invention also provides a kind of excavator, excavator is switched equipped with fault detection, is adopted
Walking hydraulic pump with above-mentioned excavator walking Hydraulic pump fault detection method detection excavator is inclined with the presence or absence of working efficiency
Low failure.
Beneficial effects of the present invention: by walking hydraulic pump, the variation of output oil pressure under specified operating condition judges row to the present invention
Whether relatively low walk efficiency of hydraulic pump, then confirmation walking hydraulic pump whether there is the relatively low failure of working efficiency, can accurately sentence
The working efficiency of disconnected hydraulic pump effectively avoids walking hydraulic pump permanent damages；And without adding flow sensor, not will cause
The increase of excavator cost.
Detailed description of the invention
Fig. 1 is the flow chart of the walking Hydraulic pump fault detection method of excavator described in the embodiment of the present invention.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of excavator is present embodiments provided, excavator is switched equipped with fault detection, and fault detection switch is set to
In the driver's cabin of excavator, it is used for quick start excavator fault detection capability, fault detection switch to can be button, rotation
Button, handle etc..
The present embodiment additionally provides a kind of excavator walking Hydraulic pump fault detection method, passes through existing excavator walking liquid
The output oil pressure variation for the output oil pressure sensor monitoring walking hydraulic pump being arranged on press pump, it is hydraulic due to walking under specified operating condition
There are corresponding relationships between the output oil pressure of pump and the output flow of pump, therefore can be by walking hydraulic pump under specified operating condition
Output oil pressure variation judgement walking hydraulic pump whether there is the relatively low failure of efficiency.
Above-mentioned specified operating condition refers to setting in excavator to preset gear, oil circuit where controlling walking hydraulic pump to be measured
Gas pedal is with default accelerator open degree work.
There are multiple walking hydraulic pumps for excavator, fault detection are carried out to each walking hydraulic pump respectively, in the present embodiment
The walking hydraulic pump of excavator be variable pump and there are two, be respectively left side walking hydraulic pump and right side walking hydraulic pump, two
The measurement process of walking hydraulic pump is identical.Fig. 1 is the stream of the excavator walking Hydraulic pump fault detection method of the present embodiment
Cheng Tu, below with reference to Fig. 1 for walking hydraulic pump carries out the process of detection failure on the left of excavator, to the fault detection side
Method is described in detail.
S10, the fault detection capability for starting excavator.
Start the fault detection capability of excavator by push button, the rotation modes such as knob or operation handle.
S20, the input current of all walking hydraulic pumps of excavator is set as zero.
The input current of the left side hydraulic pump of excavator and right side hydraulic pump is namely set as zero.The input of variable pump
The discharge capacity of electric current and variable pump is proportional, and when the input current for hydraulic pump of walking is zero, the discharge capacity for hydraulic pump of walking is zero.
S30, excavator is set to preset gear, and the left track for controlling excavator is hanging, control left side walking liquid
The gas pedal of oil circuit where press pump is with default accelerator open degree work, and then control left side walking hydraulic pump is with predetermined current work
Make；After waiting preset time, the reality output oil pressure of walking hydraulic pump to be measured under specified operating condition is obtained.
Wherein preset gear is highest gear, and presetting accelerator open degree is maximum throttle aperture, will carry out the left side of excavator
It is in order to avoid the frictional force between crawler belt and ground impacts measurement result with hanging purpose.When left side, walking is hydraulic
When pump is worked with predetermined current, the discharge capacity of left side walking hydraulic pump is maximum.
The purpose that preset time is arranged is in order to obtain the reality output oil pressure after the discharge capacity of walking hydraulic pump is stablized, to mention
The accuracy of high measurement result.
S40, the reality output oil pressure for repeatedly measuring walking hydraulic pump to be measured under the specified operating condition, and averaged.
A reality output oil pressure can be measured every time by repeating step S20 to S30；Can also after step S30,
Directly measure multiple reality output oil pressure.
S50, the theoretical output oil pressure specified under operating condition is obtained, judges that the difference of theoretical output oil pressure and above-mentioned average value is
It is no to be more than or equal to preset difference value, if so, executing S60；If it is not, then executing S70.
Above-mentioned theory output oil pressure is given value, according to method described in step S20 and step S30, by repeatedly weighing
The theoretical output oil pressure for obtaining normal walking hydraulic pump under specified operating condition is tested in retrial.
S60, there are the relatively low failures of working efficiency for left side walking hydraulic pump.
S70, left side walking hydraulic pump are normal.
The fault detection method and the left side walking detection method of hydraulic pump of right side walking hydraulic pump are identical, herein not
Repeat superfluous chat.
The present embodiment is in excavator with the gas pedal of oil circuit where preset gear work and walking hydraulic pump to be measured with pre-
If accelerator open degree works, according to walking hydraulic pump, the variation judgement walking efficiency of hydraulic pump of output oil pressure is under specified operating condition
No relatively low, then confirmation walking hydraulic pump whether there is the relatively low failure of working efficiency, can accurately judge the work of hydraulic pump
Efficiency effectively avoids walking hydraulic pump permanent damages；And without adding flow sensor, the increasing of excavator cost not will cause
Add.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (10)
- The Hydraulic pump fault detection method 1. a kind of excavator is walked, which comprises the following steps:Control excavator works under specified operating condition, and obtains the reality output oil of walking hydraulic pump to be measured under the specified operating condition Pressure；Compare the theoretical output oil pressure and the difference of the reality output oil pressure and the size of preset difference value under the specified operating condition, if The difference is more than or equal to the preset difference value, then there are the relatively low failures of working efficiency for walking hydraulic pump to be measured.
- The Hydraulic pump fault detection method 2. excavator according to claim 1 is walked, which is characterized in that the specified operating condition The gas pedal for referring to setting in excavator oil circuit where controlling walking hydraulic pump to be measured to preset gear is opened with default throttle Spend work.
- The Hydraulic pump fault detection method 3. excavator according to claim 1 is walked, which is characterized in that if the difference is small In the preset difference value, then walking hydraulic pump to be measured is normal.
- The Hydraulic pump fault detection method 4. excavator according to claim 1 is walked, which is characterized in that in control excavator Before the step of working under specified operating condition, the input current of all walking hydraulic pumps of excavator is set as zero；After controlling the step of excavator works under specified operating condition, controls walking hydraulic pump to be measured and worked with predetermined current.
- The Hydraulic pump fault detection method 5. excavator according to claim 4 is walked, which is characterized in that control walking to be measured The step of hydraulic pump is worked with predetermined current include:The input current of walking hydraulic pump to be measured is set as predetermined current, and waits preset time.
- The Hydraulic pump fault detection method 6. excavator according to claim 5 is walked, which is characterized in that walking to be measured is hydraulic When pump is with predetermined current work, the discharge capacity of walking hydraulic pump to be measured is maximum.
- The Hydraulic pump fault detection method 7. excavator according to any one of claims 1 to 6 is walked, which is characterized in that compare Theoretical output oil pressure with it is to be measured walking hydraulic pump reality output oil pressure difference and preset difference value size the step of include:Repeatedly measure the reality output oil pressure of walking hydraulic pump to be measured under the specified operating condition, and averaged；Compare the size of the difference of the theoretical output oil pressure and average value of walking hydraulic pump to be measured under the specified operating condition.
- The Hydraulic pump fault detection method 8. excavator according to claim 2 is walked, which is characterized in that controlling row to be measured Before the step of gas pedal of oil circuit where walking hydraulic pump is worked with default accelerator open degree, it will be driven by walking hydraulic pump to be measured Crawler belt it is hanging.
- The Hydraulic pump fault detection method 9. excavator according to claim 2 is walked, which is characterized in that the preset gear For highest gear, the default accelerator open degree is maximum throttle aperture.
- 10. a kind of excavator, which is characterized in that excavator is equipped with to be switched for the fault detection of startup separator detection function, Hydraulic pump fault detection method is walked using excavator as described in any one of claim 1 to 9 to detect the walking liquid of excavator Press pump whether there is the relatively low failure of working efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811543162.4A CN109594607B (en) | 2018-12-17 | 2018-12-17 | Excavator walking hydraulic pump fault detection method and excavator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811543162.4A CN109594607B (en) | 2018-12-17 | 2018-12-17 | Excavator walking hydraulic pump fault detection method and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN109594607A true CN109594607A (en) | 2019-04-09 |
| CN109594607B CN109594607B (en) | 2022-01-21 |
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| CN201811543162.4A Active CN109594607B (en) | 2018-12-17 | 2018-12-17 | Excavator walking hydraulic pump fault detection method and excavator |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292440A (en) * | 1997-04-15 | 1998-11-04 | Hitachi Constr Mach Co Ltd | Automatic excavating load measuring device for ground surface to be blasted |
| CN102326065A (en) * | 2009-03-24 | 2012-01-18 | 日立建机株式会社 | The abnormal detector of engineering machinery |
| WO2015025988A1 (en) * | 2014-09-10 | 2015-02-26 | 株式会社小松製作所 | Utility vehicle |
| CN107208672A (en) * | 2015-06-01 | 2017-09-26 | 日立建机株式会社 | The hydraulic control device of engineering machinery |
-
2018
- 2018-12-17 CN CN201811543162.4A patent/CN109594607B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292440A (en) * | 1997-04-15 | 1998-11-04 | Hitachi Constr Mach Co Ltd | Automatic excavating load measuring device for ground surface to be blasted |
| CN102326065A (en) * | 2009-03-24 | 2012-01-18 | 日立建机株式会社 | The abnormal detector of engineering machinery |
| WO2015025988A1 (en) * | 2014-09-10 | 2015-02-26 | 株式会社小松製作所 | Utility vehicle |
| CN107208672A (en) * | 2015-06-01 | 2017-09-26 | 日立建机株式会社 | The hydraulic control device of engineering machinery |
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| Publication number | Publication date |
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| CN109594607B (en) | 2022-01-21 |
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