CN103541395A - Hydraulic excavator energy-conservation control system - Google Patents
Hydraulic excavator energy-conservation control system Download PDFInfo
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- CN103541395A CN103541395A CN201310444051.9A CN201310444051A CN103541395A CN 103541395 A CN103541395 A CN 103541395A CN 201310444051 A CN201310444051 A CN 201310444051A CN 103541395 A CN103541395 A CN 103541395A
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- 238000004134 energy conservation Methods 0.000 title abstract 3
- 230000007423 decrease Effects 0.000 claims description 11
- 238000005381 potential energy Methods 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a hydraulic excavator energy-conservation control system. A three-position four-way hydraulic control reversing valve is connected to a working oil path of a rotary motor, wherein a pilot-operated oil path of the three-position four-way hydraulic control reversing valve is connected with a pilot-operated oil path of a rotary motor main control valve; a two-position three-way hydraulic control main reversing valve is connected to a working oil path of a boom cylinder rodless cavity, wherein a one-way valve is connected between the two-position three-way hydraulic control main reversing valve and the three-position four-way hydraulic control reversing valve, a two-position three-way hydraulic control pilot-operated reversing valve is connected between an oil outlet of a shuttle valve and the two-position three-way hydraulic control main reversing valve and connected with a boom main control valve which is used for controlling a boom to drop the pilot-operated oil paths, and the shuttle valve is connected to the pilot-operated oil paths at the two ends of the rotary motor main control valve. According to the hydraulic excavator energy-conservation control system, when a hydraulic excavator carries out composite operation of boom descending and rotation, the gravitational potential energy produced in the boom descending process can be transferred and supplied to the rotary motor in the form of hydraulic energy which can be used as an auxiliary power source of the rotary motor, so that space is saved, and cost is reduced.
Description
Technical field
The present invention relates to a kind of hydraulic excavator saving energy control system, belong to hydraulic excavator saving energy control technology field.
Background technology
Along with industrial technology development worldwide, as a kind of efficient earthwork construction machinery, hydraulic crawler excavator role in engineering construction is more and more obvious; The equipment quality of hydraulic crawler excavator is large, inertia is large, swing arm decrease speed is too fast when preventing work, generally in boom cylinder rodless cavity oil return direction, choke valve is housed in order to limit the decrease speed of swing arm, 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 affects the reliability of system equipment and the working life of Hydraulic Elements.
For this problem, energy-saving scheme for Hydraulic Excavator's Boom in industry mainly contains two kinds, the one, adopt the regeneration of swing arm flow to improve the energy consumption of Techniques For Reducing hydraulic system, still this mode can only be utilized the flow of 30% left and right, and more energy is still wasted on throttle orifice; The 2nd, carry out swing arm decline potential energy and reclaim, on hydraulic crawler excavator, be generally to utilize accumulator fluid,matching pressure motor to carry out the storage recycling of energy, adopt and take up room in this way large and cost of production is high.
Summary of the invention
The problem existing for above-mentioned prior art, the invention provides a kind of hydraulic excavator saving energy control system, when hydraulic crawler excavator carries out swing arm decline and rotating composition operation, can when improving the reliability of system equipment and Hydraulic Elements working life, save space, reduce costs.
To achieve these goals, the technical solution used in the present invention is: a kind of hydraulic excavator saving energy 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 in 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 and swing arm main control valve of boom cylinder, one way valve is connected between two-bit triplet hydraulic control main reversing valve and 3-position 4-way pilot operated directional control valve, and two-bit triplet hydraulic control pilot reversing valve is connected between the oil-out and two-bit triplet hydraulic control main reversing valve of shuttle valve; And with for controlling the swing arm main control valve of swing arm decline guide oil circuit, be connected, shuttle valve is connected in 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, in the situation that not using accumulator, carries out swing arm at hydraulic crawler excavator and declines while carrying out composition operation with revolution, and gravitional force when swing arm can be declined shifts and supplies with rotary motor with the form of hydraulic energy, as the auxiliary power source of rotary motor; Effectively reduce hydraulic crawler excavator fuel consume, avoid hydraulic system excess Temperature, improve reliability and the Hydraulic Elements working life of system equipment; Save space and reduced cost; Meanwhile, the present invention also can reduce costs to a greater extent in conjunction with swing arm flow regeneration improvement technology, improves energy utilization rate.
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.
The specific embodiment
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, also comprise 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 in 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 and swing arm main control valve 6 of boom cylinder 4, 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, and two-bit triplet hydraulic control pilot reversing valve 7 is connected between the oil-out and two-bit triplet hydraulic control main reversing valve 5 of shuttle valve 8; And with for controlling the swing arm main control valve 6 of swing arm decline guide oil circuit, be connected, shuttle valve 8 is connected in 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 arrange separately, also can be integrated on main valve, are integrated on main valve and can save space, control better effects if.
Two-bit triplet hydraulic control pilot reversing valve 7 and shuttle valve 8 also can adopt the form of integrated valve block, improve and control effect, save space.
When swing arm declines, the next work of swing arm main control valve 6, the choke valve of boom cylinder 4 rodless cavity oil return directions, raises the oil circuit pressure between boom cylinder 4 rodless cavities and swing arm main control valve 6.
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 next work of swing arm main control valve 6, boom cylinder 4 rod chamber oil-feeds, rodless cavity oil return, the next work of rotary motor main control valve 9, 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 the work of right position, simultaneously, 3-position 4-way pilot operated directional control valve 2 is also controlled 3-position 4-way pilot operated directional control valve 2 to the next work with the pressure of the a1 mouth of rotary motor main control valve 9, the oil return of boom cylinder 4 rodless cavities is by the left position of two-bit triplet hydraulic control main reversing valve 5, one way valve 3 and 3-position 4-way pilot operated directional control valve 2 the next, 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 next work of swing arm main control valve 6, boom cylinder 4 rod chamber oil-feeds, 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 the work of left position, simultaneously, 3-position 4-way pilot operated directional control valve 2 is also controlled 3-position 4-way pilot operated directional control valve 2 to upper work with the pressure of the b1 mouth of rotary motor main control valve 9, the oil return of boom cylinder 4 rodless cavities is by the left position of two-bit triplet hydraulic control main reversing valve 5, 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 cavities, and can not reverse circulated, prevents reverse impact and the fluctuation of pressure.
When hydraulic crawler excavator carries out swing arm or the independent operation of revolution and other composition operations, two-bit triplet hydraulic control main reversing valve 5 does not commutate, the oil return of boom cylinder 4 rodless cavities is only by 6 oil returns of swing arm main control valve, and improved control system that the present invention carries out is inoperative, and excavator action is normal.
In sum, the present invention is when hydraulic crawler excavator carries out swing arm decline and revolution and carries out composite move, and gravitional force when swing arm can be declined shifts and utilizes, and shifts and supplies with rotary motor, as the auxiliary power source of rotary motor with the form of hydraulic energy.And the present invention also can, in conjunction with swing arm flow regeneration improvement technology, reduce costs potential energy recovery utilization rate while improving swing arm decline to a greater extent.
Claims (3)
1. a hydraulic excavator saving energy 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 in 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 and swing arm main control valve (6) of boom cylinder (4), 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), two-bit triplet hydraulic control pilot reversing valve (7) is connected between the oil-out and two-bit triplet hydraulic control main reversing valve (5) of shuttle valve (8), and with for controlling the swing arm main control valve (6) of swing arm decline guide oil circuit, be connected, shuttle valve (8) is connected in guide's oil circuit at rotary motor main control valve (9) two ends.
2. a kind of hydraulic excavator saving energy 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 saving energy 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 true CN103541395A (en) | 2014-01-29 |
| CN103541395B CN103541395B (en) | 2016-04-13 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452850A (en) * | 2014-12-16 | 2015-03-25 | 山河智能装备股份有限公司 | Method and control device for recycling potential energy of movable arm of excavator |
| WO2016004664A1 (en) * | 2014-07-11 | 2016-01-14 | 徐州徐工挖掘机械有限公司 | Energy-saving control system of excavator |
| CN105386477A (en) * | 2015-10-30 | 2016-03-09 | 徐州徐工挖掘机械有限公司 | Device and method for absorbing swing arm descending energy during composite movement of excavator |
| CN106050771A (en) * | 2016-06-23 | 2016-10-26 | 徐州徐工挖掘机械有限公司 | Hydraulic loop for multifunctional tool of excavator |
| 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 |
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| 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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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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016004664A1 (en) * | 2014-07-11 | 2016-01-14 | 徐州徐工挖掘机械有限公司 | Energy-saving control system of excavator |
| CN104452850A (en) * | 2014-12-16 | 2015-03-25 | 山河智能装备股份有限公司 | Method and control device for recycling potential energy of movable arm of 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 |
| CN105386477A (en) * | 2015-10-30 | 2016-03-09 | 徐州徐工挖掘机械有限公司 | Device and method for absorbing swing arm descending energy during composite movement of excavator |
| 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 |
| CN106050771A (en) * | 2016-06-23 | 2016-10-26 | 徐州徐工挖掘机械有限公司 | Hydraulic loop for multifunctional tool of excavator |
| 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 |
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| Publication number | Publication date |
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| CN103541395B (en) | 2016-04-13 |
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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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