CN108729492A - A kind of oil-liquid hybrid electric excavator potential energy recovery method - Google Patents
A kind of oil-liquid hybrid electric excavator potential energy recovery method Download PDFInfo
- Publication number
- CN108729492A CN108729492A CN201810573174.5A CN201810573174A CN108729492A CN 108729492 A CN108729492 A CN 108729492A CN 201810573174 A CN201810573174 A CN 201810573174A CN 108729492 A CN108729492 A CN 108729492A
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- China
- Prior art keywords
- pump
- hydraulic cylinder
- motor
- excavator
- accumulator
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- 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.)
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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
- E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
Abstract
The invention discloses a kind of oil-liquid hybrid electric excavator potential energy recovery methods, it is current most efficient hydraulic driving mode using pump/motor control hydraulic cylinder, which is between energy source and actuator without dissipative cell, and it is recovered energy using identity element, by excavator swing arm hydraulic cylinder, dipper hydraulic cylinder and bucket hydraulic cylinder bear load force direction it is constant, and it is gravity load, recoverable energy is more, therefore the gravitional force of swing arm, dipper and scraper bowl is recycled by the way of composite construction hydraulic cylinder and accumulator combination.The present invention efficiency that recovers energy is relatively high.
Description
Technical field
The invention belongs to excavator fields, and in particular to a kind of oil-liquid hybrid electric excavator potential energy recovery method.
Background technology
Excavator average operation speed is relatively low, and duty cycle is shorter, there are frequent start-stop and reciprocating motion in operation process,
Since main screw lift is big, slow down or braking process in can release big energy, this portion of energy be usually transformed into thermal energy and
Waste, while system heat generation and component life shortening are also resulted in, therefore, using oil-liquid hybrid electric technology recycling engineering machinery
Braking kinetic energy and gravitional force become an energy-saving effective measures.
Invention content
The present invention to solve the above-mentioned problems, provides a kind of oil-liquid hybrid electric excavator potential energy recovery method：
The present invention specifically uses following technical scheme to realize,
A kind of oil-liquid hybrid electric excavator potential energy recovery method, the excavator have boom cylinder, dipper hydraulic cylinder and
Bucket hydraulic cylinder, it is characterised in that：The boom cylinder, dipper hydraulic cylinder and bucket hydraulic cylinder are all to meet structure hydraulic
Cylinder, the composite construction hydraulic cylinder include 3 vessels, respectively counterweight chamber, rod chamber and rodless cavity, and the counterweight chamber connection is only
Vertical accumulator, rod chamber and rodless cavity access closed model pump control system, rod chamber and rodless cavity respectively with two of variable pump into
Oil outlet is connected,
When excavating normal work, load is in cyclically-varying, and each cyclic loading variation range is essentially identical, accumulator tune
Constant-pressure makes hydraulic cylinder counterweight chamber provide load force average value, when hydraulic cylinder stretches out, variable pump to composite cylinder rodless cavity filling liquid,
Accumulator makes composite hydraulic cylinder stretch out to counterweight chamber filling liquid；When hydraulic cylinder is withdrawn, variable pump to composite cylinder rod chamber filling liquid,
The fluid of counterweight intracavitary is filled in accumulator, so that gravitional force be recycled, in gravitional force removal process, gravitional force with
The form of hydraulic energy stores.
When excavator rotary body accelerates to rotate, pump/motor 1 works in pump condition, 26 work of pump/motor
Make in motor operating conditions, pump/motor 1 drives pump/motor 26 to rotate jointly with high pressure accumulator；When rotation system
When dynamic, pump/motor 26 works in pump condition, to high pressure accumulator filling liquid, in Driven by Hydraulic Cylinder circuit, variable pump/horse
Variable pump can be driven to rotate jointly with engine up to 1, excavator works in parallel hybrid power operating mode at this time, in hydraulic pressure
In pump/motor driving circuit, engine output mechanical energy hydraulic energy is converted by pump/motor, with drive variable pump/
Motor 26 drives rotary body rotation, and excavator works in series hybrid-power operating mode at this time, which belongs to series connection-simultaneously
Join hybrid power system.
Advantageous effect of the present invention is：Swing arm, dipper are recycled by the way of composite construction hydraulic cylinder and accumulator combination
With the gravitional force of scraper bowl, the efficiency that recovers energy is relatively high.
Description of the drawings
Fig. 1 hybrid electric drive system hydraulic schematic diagrams；
Fig. 2 composite hydraulic cylinder structural schematic diagrams；
Main pump 1 in figure, swing arm variable pump 2., dipper variable pump 3, scraper bowl variable pump 4, pump/motor 1, variable pump/horse
Up to 26.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings：
As shown in Figs. 1-2, the present invention provides a kind of oil-liquid hybrid electric excavator potential energy recovery methods.
A kind of oil-liquid hybrid electric excavator potential energy recovery method, the excavator have boom cylinder, dipper hydraulic pressure
Cylinder and bucket hydraulic cylinder, it is characterised in that：The boom cylinder, dipper hydraulic cylinder and bucket hydraulic cylinder are all to meet structured liquid
Cylinder pressure, the composite construction hydraulic cylinder include 3 vessels, respectively counterweight chamber, rod chamber and rodless cavity, the counterweight chamber connection
Independent accumulator, rod chamber and rodless cavity access closed model pump control system, rod chamber and rodless cavity two with variable pump respectively
Oil inlet and outlet is connected,
When excavating normal work, load is in cyclically-varying, and each cyclic loading variation range is essentially identical, accumulator tune
Constant-pressure makes hydraulic cylinder counterweight chamber provide load force average value, when hydraulic cylinder stretches out, variable pump to composite cylinder rodless cavity filling liquid,
Accumulator makes composite hydraulic cylinder stretch out to counterweight chamber filling liquid；When hydraulic cylinder is withdrawn, variable pump to composite cylinder rod chamber filling liquid,
The fluid of counterweight intracavitary is filled in accumulator, so that gravitional force be recycled, in gravitional force removal process, gravitional force with
The form of hydraulic energy stores.
When excavator rotary body accelerates to rotate, pump/motor 1 works in pump condition, 26 work of pump/motor
Make in motor operating conditions, pump/motor 1 drives pump/motor 26 to rotate jointly with high pressure accumulator；When rotation system
When dynamic, pump/motor 26 works in pump condition, to high pressure accumulator filling liquid, in Driven by Hydraulic Cylinder circuit, variable pump/horse
Variable pump can be driven to rotate jointly with engine up to 1, excavator works in parallel hybrid power operating mode at this time, in hydraulic pressure
In pump/motor driving circuit, engine output mechanical energy hydraulic energy is converted by pump/motor, with drive variable pump/
Motor 26 drives rotary body rotation, and excavator works in series hybrid-power operating mode at this time, which belongs to series connection-simultaneously
Join hybrid power system.
Claims (1)
1. a kind of oil-liquid hybrid electric excavator potential energy recovery method, the excavator has boom cylinder, dipper hydraulic cylinder
And bucket hydraulic cylinder, it is characterised in that：The boom cylinder, dipper hydraulic cylinder and bucket hydraulic cylinder are all to meet structure hydraulic
Cylinder, the composite construction hydraulic cylinder include 3 vessels, respectively counterweight chamber, rod chamber and rodless cavity, and the counterweight chamber connection is only
Vertical accumulator, rod chamber and rodless cavity access closed model pump control system, rod chamber and rodless cavity respectively with two of variable pump into
Oil outlet is connected,
When excavating normal work, load is in cyclically-varying, and each cyclic loading variation range is essentially identical, accumulator tune
Constant-pressure makes hydraulic cylinder counterweight chamber provide load force average value, when hydraulic cylinder stretches out, variable pump to composite cylinder rodless cavity filling liquid,
Accumulator makes composite hydraulic cylinder stretch out to counterweight chamber filling liquid；When hydraulic cylinder is withdrawn, variable pump to composite cylinder rod chamber filling liquid,
The fluid of counterweight intracavitary is filled in accumulator, so that gravitional force be recycled, in gravitional force removal process, gravitional force with
The form of hydraulic energy stores,
When excavator rotary body accelerates to rotate, pump/motor 1 works in pump condition, and pump/motor 26 works in
Motor operating conditions, pump/motor 1 drive pump/motor 26 to rotate jointly with high pressure accumulator；When rotary body is braked,
Pump/motor 26 works in pump condition, to high pressure accumulator filling liquid, in Driven by Hydraulic Cylinder circuit, pump/motor 1
Variable pump can be driven to rotate jointly with engine, excavator works in parallel hybrid power operating mode at this time, in hydraulic pump/motor
In driving circuit, the mechanical energy of engine output is converted into hydraulic energy by pump/motor, to drive pump/motor 26
Rotary body rotation is driven, excavator works in series hybrid-power operating mode at this time, and it is dynamic which belongs to serial-parallel mixing
Force system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810573174.5A CN108729492A (en) | 2018-06-06 | 2018-06-06 | A kind of oil-liquid hybrid electric excavator potential energy recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810573174.5A CN108729492A (en) | 2018-06-06 | 2018-06-06 | A kind of oil-liquid hybrid electric excavator potential energy recovery method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108729492A true CN108729492A (en) | 2018-11-02 |
Family
ID=63932122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810573174.5A Withdrawn CN108729492A (en) | 2018-06-06 | 2018-06-06 | A kind of oil-liquid hybrid electric excavator potential energy recovery method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108729492A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689341A (en) * | 2019-03-15 | 2020-09-22 | 上海煊凝机电制造有限公司 | Energy-saving hydraulic oil cylinder lifting system |
| CN112049181A (en) * | 2020-09-15 | 2020-12-08 | 燕山大学 | Excavator energy regeneration system and control method |
| CN115210432A (en) * | 2020-02-27 | 2022-10-18 | 现代斗山英维高株式会社 | Construction machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418354A (en) * | 2011-10-28 | 2012-04-18 | 华侨大学 | Pump/motor-based parallel-series hybrid hydraulic excavator driving system |
| CN104314131A (en) * | 2014-09-16 | 2015-01-28 | 徐州徐工挖掘机械有限公司 | Excavator control system with oil hybrid power |
| CN206110223U (en) * | 2016-08-31 | 2017-04-19 | 徐州徐工挖掘机械有限公司 | Energy -conserving remote -action system of hydraulic shovel swing arm |
| CN107061430A (en) * | 2017-04-10 | 2017-08-18 | 太原理工大学 | The hoisting system of minus flow hydraulic circuit control |
| EP3159456B1 (en) * | 2015-10-22 | 2019-03-13 | CNH Industrial Italia S.p.A. | Hydraulic hybrid circuit with energy storage for excavators or other heavy equipment |
-
2018
- 2018-06-06 CN CN201810573174.5A patent/CN108729492A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418354A (en) * | 2011-10-28 | 2012-04-18 | 华侨大学 | Pump/motor-based parallel-series hybrid hydraulic excavator driving system |
| CN104314131A (en) * | 2014-09-16 | 2015-01-28 | 徐州徐工挖掘机械有限公司 | Excavator control system with oil hybrid power |
| EP3159456B1 (en) * | 2015-10-22 | 2019-03-13 | CNH Industrial Italia S.p.A. | Hydraulic hybrid circuit with energy storage for excavators or other heavy equipment |
| CN206110223U (en) * | 2016-08-31 | 2017-04-19 | 徐州徐工挖掘机械有限公司 | Energy -conserving remote -action system of hydraulic shovel swing arm |
| CN107061430A (en) * | 2017-04-10 | 2017-08-18 | 太原理工大学 | The hoisting system of minus flow hydraulic circuit control |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111689341A (en) * | 2019-03-15 | 2020-09-22 | 上海煊凝机电制造有限公司 | Energy-saving hydraulic oil cylinder lifting system |
| CN115210432A (en) * | 2020-02-27 | 2022-10-18 | 现代斗山英维高株式会社 | Construction machine |
| CN112049181A (en) * | 2020-09-15 | 2020-12-08 | 燕山大学 | Excavator energy regeneration system and control method |
| CN112049181B (en) * | 2020-09-15 | 2021-08-06 | 燕山大学 | Excavator energy regeneration system and control method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181102 |