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 PDF

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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
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CN
China
Prior art keywords
swing arm
valve
arm cylinder
movable arm
way
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CN2010105863610A
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Chinese (zh)
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CN102102370A (en
Inventor
吕晓林
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太原重工股份有限公司
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Priority to CN2010105863610A priority Critical patent/CN102102370B/en
Publication of CN102102370A publication Critical patent/CN102102370A/en
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Publication of CN102102370B publication Critical patent/CN102102370B/en

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Abstract

The invention discloses a lowering control system for a movable arm of a hydraulic excavator for mines, and relates to a hydraulic excavator. The system solves the problems that the prior art can only control the lowering speed of the movable arm and cannot utilize the impact energy generated by dead weight so as to cause energy waste. The system consists of a main pressure oil passage and a pilot control oil passage, wherein the main pressure oil passage consists of a left shunt block, a right shunt block, a left one-way throttling valve, a left movable arm cylinder, a safety valve, a right movable arm cylinder, a right one-way throttling valve and a hydraulic pipeline; and the pilot control oil passage consists of a remote control valve, an electromagnetic switching valve, a left movable arm cylinder one-way valve, a left movable arm cylinder regeneration valve, a right movable arm cylinder regeneration valve, a right movable arm cylinder one-way valve, an oil tank and a hydraulic pipeline. In the process of lowering the movable arm, the impact energy generated by lowering due to the dead weight of the movable arm is fully utilized for regeneration, so energy is saved, heating of a hydraulic system is reduced, lowering of the movable arm is quickened, and the work efficiency of the hydraulic system of the hydraulic excavator for mines is improved.

Description

The hydraulic excavator for mine swing arm is transferred the control system

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)

1. a hydraulic excavator for mine swing arm is transferred the control system; Comprise: by the principal pressure oil circuit that 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) are formed, the A mouth of said left shunt piece (1) is communicated with the rod chamber of said left side swing arm cylinder (4) and said right side swing arm cylinder (6) respectively; The B mouth of said right branching block (2) is communicated with said left side one-way throttle valve (3) and said right one-way choke valve (7) respectively; Said left side one-way throttle valve (3) and said right one-way choke valve (7) are communicated with the rodless cavity of said left side swing arm cylinder (4) and said right side swing arm cylinder (6) respectively, between the rodless cavity of said left side swing arm cylinder (4) and right side swing arm cylinder (6) and rod chamber, are communicated with said safety valve (5); 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 (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); Guide's hydraulic oil Pst is communicated with said Remote control valve (8); Said Remote control valve (8) is communicated with said electromagnetic switching valve (9), and said electromagnetic switching valve (9) is communicated with left end, right swing arm cylinder regeneration valve (12) left end of said left swing arm cylinder regeneration valve (11) simultaneously; One-way throttle valve (3) is communicated with the rodless cavity of left side swing arm cylinder (4) said left swing arm cylinder regeneration valve (11) through said left side, and said right swing arm cylinder regeneration valve (12) is communicated with through the rodless cavity of said right one-way choke valve (7) with right side swing arm cylinder (6); Said left swing arm cylinder regeneration valve (11), right swing arm cylinder regeneration valve (12) also are communicated with the rod chamber of said left side swing arm cylinder (4), right side swing arm cylinder (6) respectively; Said left swing arm cylinder regeneration valve (11) is communicated with said fuel tank (14) through said left swing arm cylinder one way valve (10); Said right swing arm cylinder regeneration valve (12) is communicated with fuel tank (14) through said right swing arm cylinder one way valve (13).
CN2010105863610A 2010-12-08 2010-12-08 Lowing control system for movable arm of hydraulic excavator for mines CN102102370B (en)

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

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CN102102370A CN102102370A (en) 2011-06-22
CN102102370B true CN102102370B (en) 2012-06-27

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
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)

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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
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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

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