CN102102370B - Lowing control system for movable arm of hydraulic excavator for mines - Google Patents
Lowing control system for movable arm of hydraulic excavator for mines Download PDFInfo
- Publication number
- CN102102370B CN102102370B CN2010105863610A CN201010586361A CN102102370B CN 102102370 B CN102102370 B CN 102102370B CN 2010105863610 A CN2010105863610 A CN 2010105863610A CN 201010586361 A CN201010586361 A CN 201010586361A CN 102102370 B CN102102370 B CN 102102370B
- Authority
- CN
- China
- Prior art keywords
- swing arm
- valve
- arm cylinder
- movable arm
- way
- Prior art date
Links
- 280000370113 Mines companies 0.000 title abstract 3
- 230000008929 regeneration Effects 0.000 claims abstract description 36
- 239000003921 oils Substances 0.000 claims abstract description 22
- 239000002828 fuel tank Substances 0.000 claims description 7
- 239000010720 hydraulic oils Substances 0.000 claims description 5
- 238000000034 methods Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002699 waste materials Substances 0.000 abstract description 2
- 238000010586 diagrams Methods 0.000 description 2
- 238000005516 engineering processes Methods 0.000 description 1
- 239000000446 fuels Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
Abstract
Description
Technical field
The present invention relates to hydraulic crawler excavator, particularly the control system transferred of hydraulic excavator for mine swing arm.
Background technology
Hydraulic excavator for mine has a wide range of applications in glory-hole, and swing arm is the vitals of hydraulic crawler excavator.When swing arm was transferred, because deadweight can cause that swing arm descends fast, too fast decline can damage swing arm.In the hydraulic system of hydraulic excavator for mine, boom cylinder is responsible for the lifting of swing arm and is transferred.Therefore, controlled for the lowering velocity of realizing swing arm, the hydraulic system of existing hydraulic excavator for mine has increased buffer elements such as equalizing valve, one-way throttle valve, makes safe and reliable the transferring of swing arm ability.
It is as shown in Figure 1 that the swing arm of prior art is transferred the control system, and this system comprises: left shunt piece 1, right branching block 2, left one-way throttle valve 3, left swing arm cylinder 4, safety valve 5, right swing arm cylinder 6, right one-way throttle valve 7 and pipeline connect.Its control principle is: when swing arm is transferred, and 4, the 6 rodless cavity oil returns of left and right sides boom cylinder, 3,7 meter outs of left and right sides one way valve, restriction swing arm lowering velocity.The Hydraulic Excavator's Boom of prior art is transferred in the control system, and the lowering velocity of just simple control swing arm to because the impact energy that deadweight produces fails to be used, has caused the waste of energy.
Summary of the invention
The object of the invention is intended to overcome the shortcoming of prior art; Provide a kind of hydraulic excavator for mine swing arm to transfer the control system; Solve existing Hydraulic Excavator's Boom and transfer the lowering velocity that the control system can only control swing arm; Fail the impact energy that deadweight produces is used, cause the problem of energy dissipation.
The present invention realizes through following technical scheme:
A kind of hydraulic excavator for mine swing arm is transferred the control system; Comprise: by the principal pressure oil circuit that left shunt piece, right branching block, left side one-way throttle valve, left side swing arm cylinder, safety valve, right side swing arm cylinder, right one-way choke valve are formed, the A mouth of said left shunt piece is communicated with the rod chamber of said left side swing arm cylinder and said right side swing arm cylinder respectively; The B mouth of said right branching block is communicated with said left side one-way throttle valve and said right one-way choke valve respectively; Said left side one-way throttle valve and said right one-way choke valve are communicated with the rodless cavity of said left side swing arm cylinder and said right side swing arm cylinder respectively, between the rodless cavity of said left side swing arm cylinder and right side swing arm cylinder and rod chamber, are communicated with said safety valve; It is characterized in that: said hydraulic excavator for mine swing arm is transferred the control system has also increased guide's control oil channel of being made up of Remote control valve, electromagnetic switching valve, left swing arm cylinder one way valve, left swing arm cylinder regeneration valve, right swing arm cylinder regeneration valve, right swing arm cylinder one way valve, fuel tank, guide's hydraulic oil P StBe communicated with said Remote control valve, said Remote control valve is communicated with said electromagnetic switching valve, and said electromagnetic switching valve is communicated with the left end of said left swing arm cylinder regeneration valve, right swing arm cylinder regeneration valve left end simultaneously; One-way throttle valve is communicated with the rodless cavity of left side swing arm cylinder said left swing arm cylinder regeneration valve through said left side, and said right swing arm cylinder regeneration valve is communicated with through the rodless cavity of said right one-way choke valve with right side swing arm cylinder; Said left swing arm cylinder regeneration valve, right swing arm cylinder regeneration valve also are communicated with the rod chamber of said left side swing arm cylinder, right side swing arm cylinder respectively; Said left swing arm cylinder regeneration valve is communicated with said fuel tank through said left swing arm cylinder one way valve; Said right swing arm cylinder regeneration valve is communicated with said fuel tank through said right swing arm cylinder one way valve.
The present invention compared with prior art owing on the basis of existing hydraulic technique, has increased Remote control valve, energy regeneration valve etc.; Outside the lowering velocity of decapacitation control swing arm, can also transfer in the process, control through long distance electric at swing arm; Made full use of because of swing arm deadweight and transferred the impact energy of generation; Carry out energy regeneration, not only played energy-conserving action, reduced the heating of hydraulic excavator for mine hydraulic system; And accelerated transferring of swing arm, improved the operating efficiency of hydraulic excavator for mine hydraulic system.
Description of drawings
Fig. 1 be prior art schematic diagram;
Fig. 2 is a schematic diagram of the present invention.
Through preferred embodiment the present invention is done detailed explanation below in conjunction with accompanying drawing.
The specific embodiment
As shown in Figure 2; A kind of hydraulic excavator for mine swing arm is transferred the control system; The principal pressure oil circuit of forming by left shunt piece 1, right branching block 2, left side one-way throttle valve 3, left side swing arm cylinder 4, safety valve 5, right side swing arm cylinder 6, right one-way choke valve 7 and fluid pressure line and form by guide's control oil channel two parts that Remote control valve 8, electromagnetic switching valve 9, left swing arm cylinder one way valve 10, left swing arm cylinder regeneration valve 11, right swing arm cylinder regeneration valve 12, right swing arm cylinder one way valve 13, fuel tank 14 and fluid pressure line are formed.
The principal pressure oil circuit specifically is connected to: the rod chamber that is connected to left side swing arm cylinder 4 and right side swing arm cylinder 6 from the principal pressure oil of A mouth through pipeline simultaneously; Be connected to left side one-way throttle valve 3 and right one-way choke valve 7 from the principal pressure oil of B mouth simultaneously through pipeline, the rodless cavity of swing arm cylinder 4 and right side swing arm cylinder 6 on the left of then one-way throttle valve 3 is connected to through pipeline with right one-way choke valve 7 from the left side.
Guide's control oil channel specifically is connected to: guide's hydraulic oil P StBe connected to Remote control valve 8 through pipeline, Remote control valve 8 is connected on the electromagnetic switching valve 9 through pipeline again, then connects through pipeline from electromagnetic switching valve 9 to be connected to the left end of left swing arm cylinder regeneration valve 11, right swing arm cylinder regeneration valve 12 left ends simultaneously again.
When swing arm is transferred, electromagnetic switching valve on guide's control oil channel 9 electric, make guide's hydraulic oil P StCan act on the left side of left and right sides swing arm cylinder regeneration valve 11,12 through control Remote control valve 8, promote left and right sides swing arm cylinder regeneration valve 11,12 and move to right.Like this; Because the energy impact that the swing arm deadweight produces when transferring, one-way throttle valve 3 gets into left swing arm cylinder regeneration valve 11 and right swing arm cylinder regeneration valve 12 with right one-way choke valve 7 through the left side for the left side swing arm cylinder 4 on the promotion principal pressure oil circuit and the rodless cavity principal pressure oil of right side swing arm cylinder 6.After the adjusting of left swing arm cylinder regeneration valve 11 and right swing arm cylinder regeneration valve 12; Most of left side swing arm cylinder 4 and right side swing arm cylinder 6 rod chambers of getting into of principal pressure oil; Utilized the hydraulic oil of their rodless cavity; Fully absorbed the impact energy that the swing arm deadweight produces, carried out the regeneration of energy, need not hydraulic crawler excavator and be left side swing arm cylinder 4 and right side swing arm cylinder 6 fuel feeding through right branching block 2 and left shunt piece 1.Principal pressure oil remainder is through left swing arm cylinder one way valve 10 and right swing arm cylinder one way valve 13 fluid pressure line oil sump tanks 14.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105863610A CN102102370B (en) | 2010-12-08 | 2010-12-08 | Lowing control system for movable arm of hydraulic excavator for mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105863610A CN102102370B (en) | 2010-12-08 | 2010-12-08 | Lowing control system for movable arm of hydraulic excavator for mines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102102370A CN102102370A (en) | 2011-06-22 |
| CN102102370B true CN102102370B (en) | 2012-06-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105863610A CN102102370B (en) | 2010-12-08 | 2010-12-08 | Lowing control system for movable arm of hydraulic excavator for mines |
Country Status (1)
| Country | Link |
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| CN (1) | CN102102370B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343758B (en) * | 2013-07-09 | 2016-02-03 | 常德中联重科液压有限公司 | Hyraulic controlled type flow passage control valve group, excavator swing arm hydraulic control system and excavator |
| CN103643709B (en) * | 2013-12-24 | 2015-10-21 | 太原重工股份有限公司 | Hydraulic excavator for mine swing arm hydraulic control system |
| CN104220675B (en) * | 2014-04-28 | 2017-03-08 | 株式会社小松制作所 | Working truck and the control method of working truck |
| CN104074227A (en) * | 2014-07-14 | 2014-10-01 | 广西柳工机械股份有限公司 | Hydraulic system capable of improving stability of loading machines |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL159542B1 (en) * | 1989-11-30 | 1992-12-31 | Control system intended to control opening movement of shut-off valves of working machine outriggers in particular thoe of single-bucket loaders | |
| JPH1037232A (en) * | 1996-07-24 | 1998-02-10 | Hitachi Constr Mach Co Ltd | Operation drive device of two-piece boom type work machine |
| KR100795612B1 (en) * | 2001-07-16 | 2008-01-17 | 두산인프라코어 주식회사 | Boom down control apparatus for a hydraulic heavy equipments |
| US7249457B2 (en) * | 2005-02-18 | 2007-07-31 | Timberjack Inc. | Hydraulic gravitational load energy recuperation |
| JP4871843B2 (en) * | 2007-11-19 | 2012-02-08 | 住友建機株式会社 | Boom drive circuit for construction machinery |
| CN101654915B (en) * | 2009-09-01 | 2011-07-20 | 四川省成都普什机电技术研究有限公司 | Excavator energy-recuperation system |
| CN101775822B (en) * | 2009-12-31 | 2011-12-07 | 福田雷沃国际重工股份有限公司 | Excavator swing arm descending hydraulic control loop |
-
2010
- 2010-12-08 CN CN2010105863610A patent/CN102102370B/en active IP Right Grant
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| Publication number | Publication date |
|---|---|
| CN102102370A (en) | 2011-06-22 |
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