CN103790196A - Movable arm potential energy recycle control device of hydraulic excavator - Google Patents
Movable arm potential energy recycle control device of hydraulic excavator Download PDFInfo
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- CN103790196A CN103790196A CN201410021665.0A CN201410021665A CN103790196A CN 103790196 A CN103790196 A CN 103790196A CN 201410021665 A CN201410021665 A CN 201410021665A CN 103790196 A CN103790196 A CN 103790196A
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Abstract
The invention discloses a movable arm potential energy recycle control device of a hydraulic excavator. The device comprises a first check valve (1), a first balance valve (2), a second balance valve (3), a second check valve (4) and an overflow valve (5), wherein an inlet of the first check valve and an outlet of the first balance valve are connected with a movable arm multi-way control valve outlet, an outlet of the first check valve and an inlet of the first balance valve are connected with an inlet of the second balance valve and a bottom cavity of a movable arm oil cylinder, an outlet of the second balance valve is connected with an inlet of the second check valve, an outlet of the second check valve is connected with an energy storage or utilization device, a control port of the first balance valve and a control port of the second balance valve are connected with a movable arm descending pilot oil way, a control oil return port of the first balance valve and a control oil return port of the second balance valve are communicated with an oil tank, and the overflow valve is arranged between the second check valve and the energy storage or utilization device. According to the movable arm potential energy recycle control device of the hydraulic excavator, the controllability is high when a movable arm descends slightly, and when the potential energy of the movable arm is fast recovered, the controllability is not high, the integration degree is high, and the portability is good.
Description
Technical field
The present invention relates to a kind of hydraulic crawler excavator, specifically a kind of Hydraulic Excavator's Boom potential energy recovery control device, belongs to excavator technical field.
Background technology
Excavator is to use scraper bowl to excavate higher or lower than the material such as soil, coal, silt or the Soil and Rock after pre-pine that holds machine side, and pack haulage vehicle into or unload the earth moving plant to rickyard, become at present one of topmost engineering machinery in engineering construction.
Hydraulic crawler excavator operating efficiency is high, applied widely, but the problem that its energy consumption is high, discharge is poor requires, under more and more higher background, to show all the more necessity of improvement to energy-conserving and environment-protective in social development.
In the hydraulic crawler excavator course of work, equipment needs frequent rising and decline, in the time rising to a high position, potential energy improves, and in the time declining, too fast for preventing decrease speed, throttling speed control circuit is set conventionally, potential energy a large amount of in throttle grverning process are converted into heat energy, cause system temperature to raise fast, reduced the performance of hydraulic system, also can increase heat radiation power simultaneously.
The current research for excavator potential energy recovery control device, solenoid operated directional valve or the proportional reversing valves of adopting are controlled swing arm action more, complete the recovery of movable arm potential energy simultaneously, if application number is 201120372836.6, the Chinese invention patent of authorizing on 05 30th, 2012, this patent discloses the one way valve utilizing before luffing jib maintaining valve and has realized the large chamber of boom cylinder and enter, the automatic switchover of return line, utilize the second bidirectional hydraulic control reversal valve to realize accumulator to collection of energy, the automatic decision discharging, but adopt separately solenoid operated directional valve control, cannot guarantee the microoperation of swing arm, can sacrifice the performance of swing arm, for another example application number be 201110048582.7,2011 years 05 month 25 days announce Chinese invention patent, this patent discloses the control of employing adoption rate reversal valve and has realized movable arm potential energy recovery, but adoption rate reversal valve control, need the couplings such as proportional reversing valve aperture area, control signal, swing arm exercise performance, and all to again mate for each different type, its versatility and portable bad, debugging and manufacturing cost are higher.
Summary of the invention
For the problems referred to above, the invention provides a kind of Hydraulic Excavator's Boom potential energy recovery control device, handling height when meeting swing arm decline fine motion and doing, the handling not high but requirement that need reclaim excavator swing arm potential energy when quick acting, change few to the original components and parts of excavator, integrated level is high, portable good.
For achieving the above object, this Hydraulic Excavator's Boom potential energy recovery control device comprises the first one way valve, the first equalizing valve, the second equalizing valve, the second one way valve and overflow valve, the outlet of the entrance of described the first one way valve and the first equalizing valve is connected with the outlet of swing arm multi-way control valve, the entrance of the outlet of the first one way valve and the first equalizing valve is connected with chamber at the bottom of the entrance of the second equalizing valve and boom cylinder, the outlet of the second equalizing valve is connected with the entrance of the second one way valve, the outlet of the second one way valve is connected with stored energy or use device, the control mouth of the first equalizing valve and the second equalizing valve is connected with swing arm decline guide oil circuit, the control oil return opening of the first equalizing valve and the control oil return opening of the second equalizing valve are communicated with fuel tank, overflow valve is arranged between the second one way valve and stored energy or use device.
As present invention further optimization scheme, described the first one way valve, the second one way valve are the logic valves with reverse cutoff function.
As present invention further optimization scheme, described the first equalizing valve is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
As present invention further optimization scheme, described the second equalizing valve is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
Compared with prior art, the present invention is owing to being provided with the first equalizing valve as micro-action circuit, the second equalizing valve is as quick acting loop, therefore can treat microoperation and fast-descending operation that swing arm declines with a certain discrimination, in the time of microoperation, guarantee swing arm exercise performance, in the time that fast-descending operates, guarantee the recovery of movable arm potential energy; Because equalizing valve controlled pressure of the present invention is according to swing arm decline pilot pressure adjustment control, therefore automaticity is high; Because the first equalizing valve and the second equalizing valve are provided with identical controlled pressure source, and direction of action, therefore decline fine motion work and quick acting have realized automatic decision, little to swing arm performance impact; Because this device can be connected between original system swing arm multi-way control valve outlet and chamber entrance at the bottom of boom cylinder, without changing original system, therefore versatility and portable good, can reduce and debug and manufacturing cost.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention,
Fig. 2 is pilot handle push rod of the present invention displacement and output pressure graph of relation.
In figure: 1, the first one way valve, 2, the first equalizing valve, 3, the second equalizing valve, 4, the second one way valve, 5, overflow valve, 6, swing arm multi-way control valve, 7, boom cylinder, 8, fuel tank, 9, stored energy or use device, 10, swing arm decline guide oil circuit, 11, oil supply system.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, this Hydraulic Excavator's Boom potential energy recovery control device comprises the first one way valve 1, the first equalizing valve 2, the second equalizing valve 3, the second one way valve 4, overflow valve 5.
The outlet of the entrance of the first one way valve 1 and the first equalizing valve 2 is connected with 6 outlets of swing arm multi-way control valve, the entrance of the outlet of the first one way valve 1 and the first equalizing valve 2 is connected with the second equalizing valve 3 entrances and chamber, 7 end of boom cylinder, the outlet of the second equalizing valve 3 is connected with the entrance of the second one way valve 4, the outlet of the second one way valve 4 is connected with stored energy or use device 9, the control mouth of the first equalizing valve 2 and the second equalizing valve 3 is connected with swing arm decline guide oil circuit 10, the control oil return opening of the control oil return opening of the first equalizing valve 2 and the second equalizing valve 3 is communicated with fuel tank 8, overflow valve 5 is arranged between the second one way valve 4 and stored energy or use device 9.
For can safety action logic and the reliability of system, as present invention further optimization scheme, described the first one way valve 1, the second one way valve 4 replace with the logic valve with reverse cutoff function.
In order to improve precision and the flexibility of control, as present invention further optimization scheme, described the first equalizing valve 2 is open in usual, replaces with solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
In order to improve precision and the flexibility of control, as present invention further optimization scheme, described the second equalizing valve 3 is normally closed type, replaces with solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
Under duty, in the time that swing arm rises, oil supply system 11 fuel feeding, the first equalizing valve 2 is opening, the second equalizing valve 3 is closed condition, and the outlet of swing arm multi-way control valve 6 is communicated with chamber, 7 end of boom cylinder by the first one way valve 1, the first equalizing valve 2, and hydraulic oil promotes excavator swing arm and rises;
In the time that swing arm declines, oil supply system 11 fuel feeding, the first equalizing valve 2, the second equalizing valve 3 controlled pressures are adjusted according to swing arm decline pilot pressure, the action of pilot control handle does not reach total travel, when the state of swing arm decline pilot pressure under P1, swing arm drops to fine motion and does, the first equalizing valve 2 is opening, the second equalizing valve 3 is closed condition, the first equalizing valve is as micro-action circuit, chamber, 7 end of boom cylinder is communicated with the outlet of swing arm multi-way control valve 6 by the first equalizing valve 2, 7 end of boom cylinder,, cavity pressure oil was by the former loop oil sump tank 8 of swing arm multi-way control valve 6, the exercise performance of swing arm is subject to the Properties Control of former swing arm multi-way control valve 6 spools, identical with original system, in the time that swing arm decline pilot control handle output pressure is greater than the state of P1, swing arm drops to quick acting, the first equalizing valve 2 is closing process or buttoned-up status, the second equalizing valve 3 is opening process or complete opening, the first equalizing valve 2 and the second equalizing valve 3 move simultaneously, the second equalizing valve is as quick acting loop, and chamber, 7 end of boom cylinder is connected with energy storage device or energy utilization device 9 by the second equalizing valve 3, the second one way valve 4, reaches the effect of reclaiming potential energy, recovered oil hydraulic coupling is subject to overflow valve 5 pressure limit.
It is identical with original system that the present invention has realized swing arm micro-performance that declines, the recoverable function of gesture is carried out in swing arm decline quick acting, because the first equalizing valve and the second equalizing valve are provided with identical controlled pressure source, and direction of action, therefore decline fine motion work and quick acting realized automatic decision, little to swing arm performance impact.
As shown in Figure 2, in the time of swing arm decline microoperation, pilot handle output pressure is under P1 pressure, and in the time of swing arm decline fast operating, pilot handle output pressure is between P1 and P2, and P2 is greater than P1; Control mouth pressure first equalizing valve 2 under P1 and be held open state, in the time controlling mouth pressure and be greater than P1 in closing process or buttoned-up status; Control mouth pressure second equalizing valve 3 under P1 and keep closed condition, in the time controlling mouth pressure and be greater than P1 in opening process or opening completely.
The present invention can treat microoperation and fast-descending operation that swing arm declines with a certain discrimination, guarantees swing arm exercise performance in the time of microoperation, guarantees the recovery of movable arm potential energy in the time that fast-descending operates; Decline fine motion work and quick acting have realized automatic decision, little to swing arm performance impact, and automaticity is high, versatility and portable good, can reduce debugging and manufacturing cost.
Claims (6)
1. a Hydraulic Excavator's Boom potential energy recovery control device, comprise the first one way valve (1), the first equalizing valve (2), the second equalizing valve (3), the second one way valve (4), overflow valve (5), oil supply system (11) is connected with the entrance of swing arm multi-way control valve (6), the epicoele of boom cylinder (7) is connected with swing arm multi-way control valve (6), it is characterized in that, the outlet of the entrance of the first one way valve (1) and the first equalizing valve (2) is connected with swing arm multi-way control valve (6) outlet, the entrance of the outlet of the first one way valve (1) and the first equalizing valve (2) is connected with the chamber, the end of the second equalizing valve (3) entrance and boom cylinder (7), the outlet of the second equalizing valve (3) is connected with the entrance of the second one way valve (4), the outlet of the second one way valve (4) is connected with stored energy or use device (9), the control mouth of the first equalizing valve (2) and the second equalizing valve (3) is connected with swing arm decline guide oil circuit (10), the control oil return opening of the control oil return opening of the first equalizing valve (2) and the second equalizing valve (3) is communicated with fuel tank (8), overflow valve (5) is arranged between the second one way valve (4) and stored energy or use device (9).
2. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the first equalizing valve (2) is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
3. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the second equalizing valve (3) is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
4. Hydraulic Excavator's Boom potential energy recovery control device according to claim 1, is characterized in that, described the first one way valve (1), the second one way valve (4) are the logic valves with reverse cutoff function.
5. Hydraulic Excavator's Boom potential energy recovery control device according to claim 4, is characterized in that, described the first equalizing valve (2) is solenoid-operated proportional reversal valve open in usual or hydraulic control proportional reversing valve.
6. Hydraulic Excavator's Boom potential energy recovery control device according to claim 4, is characterized in that, described the second equalizing valve (3) is normally closed type solenoid-operated proportional reversal valve or hydraulic control proportional reversing valve.
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| CN201410021665.0A CN103790196B (en) | 2014-01-17 | 2014-01-17 | A kind of Hydraulic Excavator's Boom potential energy recovery control device |
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| CN201410021665.0A CN103790196B (en) | 2014-01-17 | 2014-01-17 | A kind of Hydraulic Excavator's Boom potential energy recovery control device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358749A (en) * | 2014-09-30 | 2015-02-18 | 徐州徐工挖掘机械有限公司 | Energy recovery and utilization system for movable arm potential energy |
| CN104747544A (en) * | 2015-02-04 | 2015-07-01 | 同济大学 | Engineering machinery movable arm potential energy variable amplitude energy recovery device |
| CN105926696A (en) * | 2016-06-20 | 2016-09-07 | 浙江大学 | Excavator moving arm potential energy classified recovery and release device and method thereof |
| CN114060341A (en) * | 2021-12-01 | 2022-02-18 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-connection valve, hydraulic system and engineering machinery |
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| JPH07317707A (en) * | 1994-05-31 | 1995-12-08 | Toshiba Mach Co Ltd | Hydraulic circuit for construction machine |
| CN201339206Y (en) * | 2008-12-09 | 2009-11-04 | 中南大学 | Movable arm potential energy recovery device of hybrid power hydraulic pressure excavating machine |
| CN201649155U (en) * | 2010-02-05 | 2010-11-24 | 浙江大学 | Rotary decelerating brake energy recovery system of hydraulic excavator |
| CN201746870U (en) * | 2010-06-10 | 2011-02-16 | 重汽集团专用汽车公司 | Hydraulic hybrid power device of excavator |
| CN203729356U (en) * | 2014-01-17 | 2014-07-23 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator movable arm potential energy recovery control device |
-
2014
- 2014-01-17 CN CN201410021665.0A patent/CN103790196B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07317707A (en) * | 1994-05-31 | 1995-12-08 | Toshiba Mach Co Ltd | Hydraulic circuit for construction machine |
| CN201339206Y (en) * | 2008-12-09 | 2009-11-04 | 中南大学 | Movable arm potential energy recovery device of hybrid power hydraulic pressure excavating machine |
| CN201649155U (en) * | 2010-02-05 | 2010-11-24 | 浙江大学 | Rotary decelerating brake energy recovery system of hydraulic excavator |
| CN201746870U (en) * | 2010-06-10 | 2011-02-16 | 重汽集团专用汽车公司 | Hydraulic hybrid power device of excavator |
| CN203729356U (en) * | 2014-01-17 | 2014-07-23 | 徐州徐工挖掘机械有限公司 | Hydraulic excavator movable arm potential energy recovery control device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358749A (en) * | 2014-09-30 | 2015-02-18 | 徐州徐工挖掘机械有限公司 | Energy recovery and utilization system for movable arm potential energy |
| CN104747544A (en) * | 2015-02-04 | 2015-07-01 | 同济大学 | Engineering machinery movable arm potential energy variable amplitude energy recovery device |
| CN105926696A (en) * | 2016-06-20 | 2016-09-07 | 浙江大学 | Excavator moving arm potential energy classified recovery and release device and method thereof |
| CN114060341A (en) * | 2021-12-01 | 2022-02-18 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-connection valve, hydraulic system and engineering machinery |
| CN114060341B (en) * | 2021-12-01 | 2024-06-04 | 徐工集团工程机械股份有限公司 | Regeneration valve, multi-way valve, hydraulic system and engineering machinery |
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| CN103790196B (en) | 2016-04-06 |
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Inventor after: Li Zong Inventor after: Li Zhipeng Inventor after: Zhang Hong Inventor after: Wang Zhenxing Inventor after: Qin Jiasheng Inventor after: Fei Shuhui Inventor after: Shi Jijiang Inventor after: Gao Jianchang Inventor after: Sun Benqiang Inventor after: Zheng Yang Inventor before: Wang Zhenxing Inventor before: Li Zong Inventor before: Qin Jiasheng Inventor before: Fei Shuhui Inventor before: Shi Jijiang Inventor before: Gao Jianchang Inventor before: Sun Benqiang Inventor before: Zheng Yang Inventor before: Li Zhipeng |
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Free format text: CORRECT: INVENTOR; FROM: WANG ZHENXING LI ZONG QIN JIASHENG FEI SHUHUI SHI JIJIANG GAO JIANCHANG SUN BENQIANG ZHENG YANG LI ZHIPENG TO: LI ZONG ZHANG HONG WANG ZHENXING QIN JIASHENG FEI SHUHUI SHI JIJIANG GAO JIANCHANG SUN BENQIANG ZHENG YANG LI ZHIPENG |
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Inventor after: Li Zong Inventor after: Li Zong Wang Zhenxing Zhang Hongqin Fei Shuhui Shi Jijiang Sun Benqiang Zheng Yang Sheng Takami factory Li Zhipeng Inventor after: Wang Zhenxing Inventor after: Zhang Hong Inventor after: Qin Jiasheng Inventor after: Fei Shuhui Inventor after: Shi Jijiang Inventor after: Gao Jianchang Inventor after: Sun Benqiang Inventor after: Zheng Yang Inventor before: Li Zong Inventor before: Li Zong Zhang Hong Wang Zhenxing Qin Jiasheng Fei Shuhui Shi Jijiang Sun Benqiang Zheng Yang Li Zhipeng idea factory Inventor before: Zhang Hong Inventor before: Wang Zhenxing Inventor before: Qin Jiasheng Inventor before: Fei Shuhui Inventor before: Shi Jijiang Inventor before: Gao Jianchang Inventor before: Sun Benqiang Inventor before: Zheng Yang |
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