CN103541395B - A kind of hydraulic excavator energy-conservation control system - Google Patents
A kind of hydraulic excavator energy-conservation control system Download PDFInfo
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- CN103541395B CN103541395B CN201310444051.9A CN201310444051A CN103541395B CN 103541395 B CN103541395 B CN 103541395B CN 201310444051 A CN201310444051 A CN 201310444051A CN 103541395 B CN103541395 B CN 103541395B
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Abstract
The invention discloses a kind of hydraulic excavator energy-conservation control system, 3-position 4-way pilot operated directional control valve is connected to the working oil path of rotary motor, and its guide's oil circuit is connected with guide's oil circuit of rotary motor main control valve; Two-bit triplet hydraulic control main reversing valve is connected to the working oil path of boom cylinder rodless cavity, one way valve is connected between two-bit triplet hydraulic control main reversing valve and 3-position 4-way pilot operated directional control valve, between the oil-out that two-bit triplet hydraulic control pilot reversing valve is connected to shuttle valve and two-bit triplet hydraulic control main reversing valve; And be connected with the swing arm main control valve for controlling swing arm decline guide oil circuit, shuttle valve is connected to guide's oil circuit at rotary motor main control valve two ends.The present invention is when hydraulic crawler excavator carries out swing arm decline and composition operation is carried out in revolution, and gravitional force when swing arm can be declined, with the form of hydraulic energy transfer supply rotary motor, as the auxiliary power source of rotary motor, is saved space, reduced costs.
Description
Technical field
The present invention relates to a kind of hydraulic excavator energy-conservation control system, belong to hydraulic excavator saving energy control technology field.
Background technology
Along with industrial technology development worldwide, as the efficient earthwork construction machinery of one, hydraulic crawler excavator role in engineering construction is more and more obvious; The equipment quality of hydraulic crawler excavator is large, inertia is large, during for preventing work, swing arm decrease speed is too fast, generally choke valve is housed in order to limit the decrease speed of swing arm in boom cylinder rodless cavity oil return direction, but, adopt this structure, when equipment declines, the overwhelming majority of gravitional force can be converted into heat energy at restriction, causes the waste of energy and the rising of system temperature, and then the reliability of influential system equipment and the working life of Hydraulic Elements.
For this problem, two kinds are mainly contained for the energy-saving scheme of Hydraulic Excavator's Boom in industry, one is the energy consumption adopting swing arm flow regeneration improvement opportunity to reduce hydraulic system, but this mode can only utilize the flow of about 30%, and more energy is still wasted on throttle orifice; Two is carry out swing arm decline potential energy to reclaim, and hydraulic crawler excavator is generally the storage recycling utilizing accumulator fluid,matching pressure motor to carry out energy, adopts to take up room large in this way and cost of production is high.
Summary of the invention
For above-mentioned prior art Problems existing, the invention provides a kind of hydraulic excavator energy-conservation control system, when hydraulic crawler excavator carries out swing arm decline and pivotal composition operation, space can be saved while the reliability improving system equipment and Hydraulic Elements working life, reduce costs.
To achieve these goals, the technical solution used in the present invention is: a kind of hydraulic excavator energy-conservation control system, comprise rotary motor, boom cylinder, swing arm main control valve and rotary motor main control valve, also comprise 3-position 4-way pilot operated directional control valve, one way valve, two-bit triplet hydraulic control main reversing valve, two-bit triplet hydraulic control pilot reversing valve and shuttle valve; 3-position 4-way pilot operated directional control valve is connected to the working oil path of rotary motor, guide's oil circuit of 3-position 4-way pilot operated directional control valve is connected with guide's oil circuit of rotary motor main control valve, two-bit triplet hydraulic control main reversing valve is connected between the rodless cavity of boom cylinder and swing arm main control valve, one way valve is connected between two-bit triplet hydraulic control main reversing valve and 3-position 4-way pilot operated directional control valve, between the oil-out that two-bit triplet hydraulic control pilot reversing valve is connected to shuttle valve and two-bit triplet hydraulic control main reversing valve; And be connected with the swing arm main control valve for controlling swing arm decline guide oil circuit, shuttle valve is connected to guide's oil circuit at rotary motor main control valve two ends.
Preferably, 3-position 4-way pilot operated directional control valve, one way valve and two-bit triplet hydraulic control main reversing valve are integrated on main valve.
Preferably, two-bit triplet hydraulic control pilot reversing valve and shuttle valve are integrated valve block.
The present invention is not when using accumulator, and when hydraulic crawler excavator carries out swing arm decline and composition operation is carried out in revolution, gravitional force when swing arm can be declined, with the form of hydraulic energy transfer supply rotary motor, as the auxiliary power source of rotary motor; Effective reduction hydraulic crawler excavator fuel consume, avoid hydraulic system temperature too high, improve reliability and the Hydraulic Elements working life of system equipment; Save space and reduce cost; Meanwhile, the present invention also in conjunction with swing arm flow regeneration improvement opportunity, can reduce costs, improves energy utilization rate to a greater extent.
Accompanying drawing explanation
Fig. 1 is hydraulic principle schematic diagram of the present invention.
In figure: 1, rotary motor, 2,3-position 4-way pilot operated directional control valve, 3, one way valve, 4, boom cylinder, 5, two-bit triplet hydraulic control main reversing valve, 6, swing arm main control valve, 7, two-bit triplet hydraulic control pilot reversing valve, 8, shuttle valve, 9, rotary motor main control valve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1: the present invention includes rotary motor 1, boom cylinder 4, swing arm main control valve 6 and rotary motor main control valve 9,3-position 4-way pilot operated directional control valve 2, one way valve 3, two-bit triplet hydraulic control main reversing valve 5, two-bit triplet hydraulic control pilot reversing valve 7 and shuttle valve 8 is also comprised; 3-position 4-way pilot operated directional control valve 2 is connected to the working oil path of rotary motor 1, guide's oil circuit of 3-position 4-way pilot operated directional control valve 2 is connected with guide's oil circuit of rotary motor main control valve 9, two-bit triplet hydraulic control main reversing valve 5 is connected between the rodless cavity of boom cylinder 4 and swing arm main control valve 6, one way valve 3 is connected between two-bit triplet hydraulic control main reversing valve 5 and 3-position 4-way pilot operated directional control valve 2, between the oil-out that two-bit triplet hydraulic control pilot reversing valve 7 is connected to shuttle valve 8 and two-bit triplet hydraulic control main reversing valve 5; And be connected with the swing arm main control valve 6 for controlling swing arm decline guide oil circuit, shuttle valve 8 is connected to guide's oil circuit at rotary motor main control valve 9 two ends.
3-position 4-way pilot operated directional control valve 2, one way valve 3 and two-bit triplet hydraulic control main reversing valve 5 can be arranged separately, also can be integrated on main valve, and be integrated on main valve and can save space, control effects is better.
Two-bit triplet hydraulic control pilot reversing valve 7 and shuttle valve 8 also can adopt the form of integrated valve block, improve control effects, save space.
When swing arm declines, the work of swing arm main control valve 6 bottom, the choke valve in boom cylinder 4 rodless cavity oil return direction, makes the oil circuit pressure between boom cylinder 4 rodless cavity and swing arm main control valve 6 raise.
When excavator carries out swing arm decline and right-hand rotation action simultaneously, pass through operating grip, 3-position 4-way pilot operated directional control valve 2 obtains pressure signal with the a1 mouth of rotary motor main control valve 9 and the a2 mouth of swing arm main control valve 6, the work of swing arm main control valve 6 bottom, the oil-feed of boom cylinder 4 rod chamber, rodless cavity oil return, the work of rotary motor main control valve 9 bottom, the B mouth oil-feed A mouth oil return of rotary motor 1, the a2 hydraulic fluid port that the two-bit triplet hydraulic control pilot reversing valve 7 of pilot control system connects swing arm main control valve 6 obtains pressure signal and the work of right position, shuttle valve 8 obtains pressure signal, by two-bit triplet hydraulic control pilot reversing valve 7, two-bit triplet hydraulic control main reversing valve 5 is controlled to work to right position, simultaneously, 3-position 4-way pilot operated directional control valve 2 also controls to work to bottom with the pressure of the a1 mouth of rotary motor main control valve 9 by 3-position 4-way pilot operated directional control valve 2, the left position of two-bit triplet hydraulic control main reversing valve 5 is passed through in the oil return of boom cylinder 4 rodless cavity, the bottom of one way valve 3 and 3-position 4-way pilot operated directional control valve 2, pass to the B mouth of rotary motor 1.
When excavator carries out swing arm decline and left revolution action simultaneously, pass through operating grip, 3-position 4-way pilot operated directional control valve 2 obtains pressure signal with the b1 mouth of rotary motor main control valve 9 and the a2 mouth of swing arm main control valve 6, the work of swing arm main control valve 6 bottom, the oil-feed of boom cylinder 4 rod chamber, rodless cavity oil return, the upper work of rotary motor main control valve 9, the A mouth oil-feed B mouth oil return of rotary motor 1, the a2 hydraulic fluid port that now the two-bit triplet hydraulic control pilot reversing valve 7 of pilot control system connects swing arm main control valve 6 obtains pressure signal and the work of right position, shuttle valve 8 obtains pressure signal, by two-bit triplet hydraulic control pilot reversing valve 7, two-bit triplet hydraulic control main reversing valve 5 is controlled to work to left position, simultaneously, 3-position 4-way pilot operated directional control valve 2 also controls to upper work with the pressure of the b1 mouth of rotary motor main control valve 9 by 3-position 4-way pilot operated directional control valve 2, the left position of two-bit triplet hydraulic control main reversing valve 5 is passed through in the oil return of boom cylinder 4 rodless cavity, one way valve 3 and 3-position 4-way pilot operated directional control valve 2 upper, pass to the A mouth of rotary motor 1.
Due to the set direction of one way valve 3, hydraulic oil flows to rotary motor 1 by boom cylinder 4 rodless cavity, and can not reverse circulated, prevents reverse impact and the fluctuation of pressure.
When hydraulic crawler excavator carries out swing arm or turns round independent operation and other composition operations, two-bit triplet hydraulic control main reversing valve 5 does not commutate, the oil return of boom cylinder 4 rodless cavity only by swing arm main control valve 6 oil return, the present invention the control system carrying out improving inoperative, excavator action is normal.
In sum, the present invention is when hydraulic crawler excavator carries out swing arm decline and composite move is carried out in revolution, and gravitional force transfer when swing arm can be declined utilizes, with the form of hydraulic energy transfer supply rotary motor, as the auxiliary power source of rotary motor.Further, the present invention also in conjunction with swing arm flow regeneration improvement opportunity, can reduce costs to a greater extent, improves potential energy recovery utilization rate when swing arm declines.
Claims (3)
1. a hydraulic excavator energy-conservation control system, comprise rotary motor (1), boom cylinder (4), swing arm main control valve (6) and rotary motor main control valve (9), characterized by further comprising 3-position 4-way pilot operated directional control valve (2), one way valve (3), two-bit triplet hydraulic control main reversing valve (5), two-bit triplet hydraulic control pilot reversing valve (7) and shuttle valve (8), 3-position 4-way pilot operated directional control valve (2) is connected to the working oil path of rotary motor (1), guide's oil circuit of 3-position 4-way pilot operated directional control valve (2) is connected with guide's oil circuit of rotary motor main control valve (9), two-bit triplet hydraulic control main reversing valve (5) is connected between the rodless cavity of boom cylinder (4) and swing arm main control valve (6), one way valve (3) is connected between two-bit triplet hydraulic control main reversing valve (5) and 3-position 4-way pilot operated directional control valve (2), between the oil-out that two-bit triplet hydraulic control pilot reversing valve (7) is connected to shuttle valve (8) and two-bit triplet hydraulic control main reversing valve (5), and be connected with the swing arm main control valve (6) for controlling swing arm decline guide oil circuit, shuttle valve (8) is connected to guide's oil circuit at rotary motor main control valve (9) two ends.
2. a kind of hydraulic excavator energy-conservation control system as claimed in claim 1, is characterized in that described 3-position 4-way pilot operated directional control valve (2), one way valve (3) and two-bit triplet hydraulic control main reversing valve (5) are integrated on main valve.
3. a kind of hydraulic excavator energy-conservation control system as claimed in claim 1, is characterized in that described two-bit triplet hydraulic control pilot reversing valve (7) and shuttle valve (8) are integrated valve block.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310444051.9A CN103541395B (en) | 2013-09-26 | 2013-09-26 | A kind of hydraulic excavator energy-conservation control system |
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| CN201310444051.9A CN103541395B (en) | 2013-09-26 | 2013-09-26 | A kind of hydraulic excavator energy-conservation control system |
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| CN103541395A CN103541395A (en) | 2014-01-29 |
| CN103541395B true CN103541395B (en) | 2016-04-13 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141326B (en) * | 2014-07-11 | 2017-05-03 | 徐州徐工挖掘机械有限公司 | Energy-saving control system for excavator |
| CN104452850B (en) * | 2014-12-16 | 2017-05-31 | 山河智能装备股份有限公司 | Method and its control device that a kind of excavator swing arm potential energy is recycled |
| CN105386477B (en) * | 2015-10-30 | 2017-11-21 | 徐州徐工挖掘机械有限公司 | Swing arm declines the device of energy absorption during a kind of excavator composite move |
| CN106050771B (en) * | 2016-06-23 | 2017-12-15 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic circuit for excavator multifunctional tool |
| CN111561015A (en) * | 2020-05-29 | 2020-08-21 | 三一重机有限公司 | Excavator rotation control method, excavator rotation system and excavator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831181A1 (en) * | 1996-09-20 | 1998-03-25 | Shin Caterpillar Mitsubishi Ltd. | Hydraulic circuit |
| CN1470717A (en) * | 2002-06-14 | 2004-01-28 | �ֶ��ֽ����豸�عɣ���䣩����˾ | Hydraulic circuit with floating function for boom cylinder combination |
| WO2012060426A1 (en) * | 2010-11-02 | 2012-05-10 | 日立建機株式会社 | Work machine |
| CN202689076U (en) * | 2012-07-12 | 2013-01-23 | 徐州徐工挖掘机械有限公司 | Pilot oil source control valve bank of hydraulic excavator |
| CN103195124A (en) * | 2013-04-03 | 2013-07-10 | 徐州徐工挖掘机械有限公司 | Excavator return oil pressure control loop |
| CN203583536U (en) * | 2013-09-26 | 2014-05-07 | 徐州徐工挖掘机械有限公司 | Energy-saving control system of hydraulic excavator |
-
2013
- 2013-09-26 CN CN201310444051.9A patent/CN103541395B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831181A1 (en) * | 1996-09-20 | 1998-03-25 | Shin Caterpillar Mitsubishi Ltd. | Hydraulic circuit |
| CN1470717A (en) * | 2002-06-14 | 2004-01-28 | �ֶ��ֽ����豸�عɣ���䣩����˾ | Hydraulic circuit with floating function for boom cylinder combination |
| WO2012060426A1 (en) * | 2010-11-02 | 2012-05-10 | 日立建機株式会社 | Work machine |
| CN202689076U (en) * | 2012-07-12 | 2013-01-23 | 徐州徐工挖掘机械有限公司 | Pilot oil source control valve bank of hydraulic excavator |
| CN103195124A (en) * | 2013-04-03 | 2013-07-10 | 徐州徐工挖掘机械有限公司 | Excavator return oil pressure control loop |
| CN203583536U (en) * | 2013-09-26 | 2014-05-07 | 徐州徐工挖掘机械有限公司 | Energy-saving control system of hydraulic excavator |
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Inventor after: Li Zong Inventor after: Liu Hetao Inventor after: Zhang Hong Inventor after: Han Lizhi Inventor after: Fei Shuhui Inventor after: Zhang Fei Inventor after: Gao Chunsheng Inventor after: Li Zong, Liu Hetao, Zhang Hong, Han Ji, Fei Shuhui, Zhang Fei, Gao Chunsheng, Yue Suhua Inventor before: Liu Hetao Inventor before: Han Lizhi Inventor before: Fei Shuhui Inventor before: Zhang Fei Inventor before: Gao Chunsheng Inventor before: Liu Hetao, Han Lizhi, Fei Shuhui, Zhang Fei, Gao Chunsheng, Yue Suhua |
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