CN102776913A - Power matching method for hydraulic excavator - Google Patents
Power matching method for hydraulic excavator Download PDFInfo
- Publication number
- CN102776913A CN102776913A CN2012102713790A CN201210271379A CN102776913A CN 102776913 A CN102776913 A CN 102776913A CN 2012102713790 A CN2012102713790 A CN 2012102713790A CN 201210271379 A CN201210271379 A CN 201210271379A CN 102776913 A CN102776913 A CN 102776913A
- Authority
- CN
- China
- Prior art keywords
- power
- pump
- engine
- motor
- hydraulic excavator
- 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.)
- Pending
Links
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The invention provides a power matching method for a hydraulic excavator. The power matching method for the hydraulic excavator is characterized in that the current of a proportional valve is reduced by two methods: 1, automatically adjusting a pump controlled current according to the working time of an engine by an electric control system of the hydraulic excavator, and reducing the power of a pump according to the decreasing proportion of the power of the engine and pump in a shop instruction so as to match the power of the engine and the pump; 2, setting matched parameters by a vehicle-mounted display of the hydraulic excavator, and reducing the current of the proportional valve according to the decreasing proportion of the power of the engine and pump in the shop instruction so as to match the power of the engine and the pump. According to the method provided by the invention, the power of the engine and pump is matched when the power of the engine is decreased due to friction and aging by reducing the current of the proportional valve, thereby, the work efficiency is improved, and the fuel consumption is reduced.
Description
Technical field
The present invention relates to a kind of hydraulic crawler excavator power matching method, belong to the hydraulic crawler excavator technical field.
Background technology
Hydraulic crawler excavator is widely used in the infrastructures such as building construction foundation dredging and completion cleaning, urban duct laying, construction of water conservancy works; It is a kind of Engineering Work machine that excavates and load and transport; Have construction maneuverability, advantage such as efficient, be called as " high-efficiency multi-function machinery ".
Along with the development of excavator technology, multifunction, an intelligent trend that has become the excavator development.Yet when engine operation after 3000 hours, engine power has the decline of indefinite degree.Certainly, hydraulic pump also can cause power to descend because of wearing and tearing, but does not have the big of motor decline.So it is bigger that hydraulic crawler excavator normal operation meeting causes engine speed to descend, when running into heavy load, motor meeting over-emitting black exhaust, even can stop working; Especially at the low speed gear, this phenomenon is more serious.This not only influences operating efficiency, increases fuel consume but also has potential safety hazard.
Summary of the invention
When the motor that the technical problem that the present invention will solve provides a kind of hydraulic crawler excavator descends because of wear and aging power, the power matching method of motor and pump.
In order to solve the problems of the technologies described above, a kind of technical scheme of the present invention provides a kind of hydraulic crawler excavator power matching method, it is characterized in that: reduce the proportioning valve electric current, reducing the proportioning valve method of current has two kinds:
Method 1: the electric-control system of hydraulic crawler excavator is adjusted pump control electric current automatically according to engine operating duration, reduces the power of pump according to the power decline ratio of motor in the shop instructions and pump, and the power of motor and pump is complementary;
Method 2: the Vehicular display device through hydraulic crawler excavator is provided with match parameter, reduces the proportioning valve electric current according to the power decline ratio of motor in the shop instructions and pump, and the power of motor and pump is complementary.
A kind of hydraulic crawler excavator power matching method provided by the invention is according to the motor practical working situation; Proportional pressure-reducing valve electric current through electrical control system display adjustment hydraulic pressure main pump; Satisfy the power match problem of excavator system, and then solve the particularly problem of bottom gear motor over-emitting black exhaust even flame-out phenomenon of excavator slow motion, inefficiency.
Method provided by the invention is through reducing the proportioning valve electric current, and the power of motor and pump was complementary when motor was descended because of wear and aging power, had improved operating efficiency, had reduced fuel consume.
The specific embodiment
For making the present invention more obviously understandable, with a preferred embodiment, elaborate as follows now.
The whole electric hydraulic control system of hydraulic crawler excavator comprises dynamical system, hydraulic system, electrical control system and all types of sensor etc.
Table 1 is produced the ratio that motor running time and environment temperature and corresponding power descend in the manual for certain excavator, wherein, transverse axis be environment temperature (℃), the longitudinal axis is engine operating duration (h).
The ratio that table 1 motor running time and environment temperature and corresponding power descend
| 0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | |
| 0 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 500 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 1000 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 1500 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 2000 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.99 |
| 2500 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.99 | 0.98 |
| 3000 | 0.99 | 0.99 | 0.99 | 0.98 | 0.98 | 0.97 | 0.97 | 0.97 | 0.96 | 0.96 |
| 3500 | 0.97 | 0.97 | 0.97 | 0.96 | 0.96 | 0.96 | 0.95 | 0.95 | 0.94 | 0.93 |
| 4000 | 0.96 | 0.96 | 0.96 | 0.95 | 0.95 | 0.94 | 0.94 | 0.93 | 0.92 | 0.91 |
| 4500 | 0.94 | 0.94 | 0.93 | 0.93 | 0.93 | 0.92 | 0.92 | 0.91 | 0.90 | 0.88 |
| 5000 | 0.91 | 0.91 | 0.90 | 0.90 | 0.89 | 0.89 | 0.88 | 0.88 | 0.87 | 0.85 |
| 6000 | 0.86 | 0.86 | 0.85 | 0.85 | 0.84 | 0.84 | 0.84 | 0.84 | 0.82 | 0.82 |
| 7000 | 0.82 | 0.82 | 0.82 | 0.82 | 0.81 | 0.81 | 0.81 | 0.81 | 0.80 | 0.78 |
Table 2 is produced the ratio of hydraulic pump running time and environment temperature and the decline of corresponding power in the manual for above-mentioned excavator, wherein, transverse axis be environment temperature (℃), the longitudinal axis is pump work time (h).
The ratio that table 2 hydraulic pump running time and environment temperature and corresponding power descend
| 0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | |
| 0 | 0.98 | 0.99 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 1000 | 0.98 | 0.99 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 2000 | 0.98 | 0.99 | 0.99 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| 3000 | 0.98 | 0.99 | 0.99 | 0.99 | 0.99 | 0.99 | 0.99 | 0.99 | 0.99 | 0.98 |
| 4000 | 0.98 | 0.98 | 0.98 | 0.99 | 0.99 | 0.99 | 0.99 | 0.98 | 0.98 | 0.98 |
| 5000 | 0.96 | 0.96 | 0.96 | 0.96 | 0.97 | 0.97 | 0.97 | 0.96 | 0.96 | 0.95 |
| 6000 | 0.94 | 0.94 | 0.94 | 0.95 | 0.95 | 0.95 | 0.95 | 0.94 | 0.94 | 0.93 |
| 7000 | 0.92 | 0.92 | 0.92 | 0.93 | 0.93 | 0.93 | 0.92 | 0.91 | 0.91 | 0.90 |
Shown in table 1, table 2; Undertaken under the correct maintenance condition by maintenance instruction manual in the engine maintenance maintenance; Engine operation 2500 hours self variable power is very little; Engine power has decline in various degree after 3000 hours, and variation in various degree all can be arranged after 3500,4000,4500 hours, and just amplitude of variation is slightly different.This moment corresponding pump also in various degree variation of power; But the variation of pump power do not have that engine power changes greatly; If so do not reduce the power of pump this moment; Engine power is not enough certainly, can not satisfy system requirements, and motor falls that speed can increase even flame-out, over-emitting black exhaust, complete machine slow motion, inefficiency, fuel consume are big.This be since this moment motor and pump power be not complementary and cause; Address this problem, the power of motor and pump is complementary, so will reduce the power of pump; Just reduce the electric current of proportional pressure-reducing valve; According to the power curve of hydraulic pump, binding engine power decline scope is given suitable current value of proportional pressure-reducing valve; Make system matches, problem such as solve that motor falls that speed can increase even flame-out, over-emitting black exhaust, complete machine slow motion, inefficiency, fuel consume be big.Reducing the proportioning valve method of current is to have two kinds:
1, through Vehicular display device match parameter is set, can adjusts the power of pump according to the different working situation.
2, electric-control system is adjusted pump control electric current automatically according to engine operating duration, according to the power decline situation of motor and pump, reduces the power of pump in proportion, and the power of motor and pump is complementary.
Hydraulic crawler excavator power matching method of the present invention also can be used for similar places such as other engineering machinery such as loader, building machinery, load-carrying vehicle except that being used for hydraulic crawler excavator, it is obvious especially that engine operation surpasses after 3500 hours effect.
Claims (1)
1. hydraulic crawler excavator power matching method, it is characterized in that: reduce the proportioning valve electric current, reducing the proportioning valve method of current has two kinds:
Method 1: the electric-control system of hydraulic crawler excavator is adjusted pump control electric current automatically according to engine operating duration, reduces the power of pump according to the power decline ratio of motor in the shop instructions and pump, and the power of motor and pump is complementary;
Method 2: the Vehicular display device through hydraulic crawler excavator is provided with match parameter, reduces the proportioning valve electric current according to the power decline ratio of motor in the shop instructions and pump, and the power of motor and pump is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102713790A CN102776913A (en) | 2012-07-31 | 2012-07-31 | Power matching method for hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102713790A CN102776913A (en) | 2012-07-31 | 2012-07-31 | Power matching method for hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102776913A true CN102776913A (en) | 2012-11-14 |
Family
ID=47122009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102713790A Pending CN102776913A (en) | 2012-07-31 | 2012-07-31 | Power matching method for hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102776913A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819103A (en) * | 2021-11-24 | 2021-12-21 | 徐工集团工程机械股份有限公司科技分公司 | Power control hydraulic system and control method for skid steer loader |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024710A (en) * | 1976-03-25 | 1977-05-24 | Koehring Company | Load sensing hydraulic circuit having power matching means |
| CN101761105A (en) * | 2009-11-19 | 2010-06-30 | 龙工(上海)机械制造有限公司 | Power matching method of hydraulic excavator |
| CN101818508A (en) * | 2010-04-19 | 2010-09-01 | 三一重机有限公司 | Power control system and method of excavator |
| CN102021925A (en) * | 2009-09-21 | 2011-04-20 | 北汽福田汽车股份有限公司 | Control system and method for matching excavator power |
| CN102505996A (en) * | 2011-11-28 | 2012-06-20 | 上海中联重科桩工机械有限公司 | Power matching system and method for electric control engine and variable hydraulic pump |
-
2012
- 2012-07-31 CN CN2012102713790A patent/CN102776913A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4024710A (en) * | 1976-03-25 | 1977-05-24 | Koehring Company | Load sensing hydraulic circuit having power matching means |
| CN102021925A (en) * | 2009-09-21 | 2011-04-20 | 北汽福田汽车股份有限公司 | Control system and method for matching excavator power |
| CN101761105A (en) * | 2009-11-19 | 2010-06-30 | 龙工(上海)机械制造有限公司 | Power matching method of hydraulic excavator |
| CN101818508A (en) * | 2010-04-19 | 2010-09-01 | 三一重机有限公司 | Power control system and method of excavator |
| CN102505996A (en) * | 2011-11-28 | 2012-06-20 | 上海中联重科桩工机械有限公司 | Power matching system and method for electric control engine and variable hydraulic pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113819103A (en) * | 2021-11-24 | 2021-12-21 | 徐工集团工程机械股份有限公司科技分公司 | Power control hydraulic system and control method for skid steer loader |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100497907C (en) | Concrete transfer pump energy-saving control method | |
| CN103321272A (en) | Hydraulic excavator power control method in plateau mode | |
| CN101761105B (en) | Power matching method of hydraulic excavator | |
| CN103061907B (en) | Engine control device and method for hydraulic system of fixed displacement pump | |
| CN103711170B (en) | Hybrid excavator control method | |
| CN101768990A (en) | Hydraulic constant power control device for excavator | |
| CN104405707A (en) | Multi-pump hydraulic system and power control method thereof | |
| CN204458598U (en) | A kind of hydraulic system and there is its engineering machinery | |
| CN102776913A (en) | Power matching method for hydraulic excavator | |
| CN202899210U (en) | Rotary hydraulic system of excavator | |
| CN107810299A (en) | The control device and control method of engineering machinery | |
| CN102864810B (en) | A kind of engineering machinery hydraulic energy saver and control method and excavator | |
| CN110984282B (en) | Excavator control method based on maximum available torque of engine | |
| CN114722568B (en) | Energy-saving method of hydraulic excavator based on power system power matching and hydraulic system flow matching | |
| CN205276347U (en) | Actuating system and leveler | |
| CN206736680U (en) | A kind of wheel-type spreading machine running gear | |
| CN103389686B (en) | Method for controlling pump truck and pump truck | |
| CN105421521A (en) | Flameout-preventing control method and system for excavator | |
| CN205225919U (en) | Fluid pump controller | |
| CN210265310U (en) | Multi-pump confluence hydraulic station device | |
| CN104963374B (en) | Excavator operating mode autocontrol method | |
| CN205154589U (en) | YB hydraulic plunger slush pump automatic control device | |
| CN202416121U (en) | High-precision batching hydraulic system for rare slurry seal coat vehicle | |
| CN202170522U (en) | Bulldozer slip coefficient automatic control system | |
| CN201169793Y (en) | Loader engine and work pump combined control apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121114 |