CN104988963A - Hydraulic excavator movable arm potential energy recovery system - Google Patents
Hydraulic excavator movable arm potential energy recovery system Download PDFInfo
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- CN104988963A CN104988963A CN201510339700.8A CN201510339700A CN104988963A CN 104988963 A CN104988963 A CN 104988963A CN 201510339700 A CN201510339700 A CN 201510339700A CN 104988963 A CN104988963 A CN 104988963A
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Abstract
The invention provides the technical scheme of a hydraulic excavator movable arm potential energy recovery system. The scheme also comprises two main control oil cylinders and an auxiliary oil cylinder which are used for driving a movable arm to move, wherein the auxiliary oil cylinder is arranged in parallel with the two main control oil cylinders; cylinder rods of the two main control oil cylinders and a cylinder rod of the auxiliary oil cylinder synchronously move; a hydraulic pump is communicated with rod cavities and rodless cavities of the two main control oil cylinders and a rod cavity of the auxiliary oil cylinder by a second reversing valve; and a rodless cavity of the auxiliary oil cylinder is communicated with an energy accumulator. According to the invention, the potential energy produced when the auxiliary oil cylinder descends can be recovered in the energy accumulator; the energy accumulator releases the stored potential energy when the movable arm ascends; and compared with the prior art, the whole hydraulic system has the advantages that the energy consumption is greatly reduced; heating is reduced; and the reutilization of energy is realized.
Description
Technical field
What the present invention relates to is engineering machinery hydraulic transmission field, especially a kind of Hydraulic Excavator's Boom potential energy recovery system.
Background technology
Hydraulic crawler excavator is a kind of widely used engineering machinery, equipment weight accounts for complete machine weight 1/4, and in excavator operation process, each work cycle wants lifting and decline one action device, need a large amount of energy during lifting, potential energy during decline wastes again.In prior art, this is the weak point existing for prior art.
Summary of the invention
Technical problem to be solved by this invention, be exactly for the deficiency existing for prior art, and a kind of technical scheme of Hydraulic Excavator's Boom potential energy recovery system is provided, use the present invention can be recovered in accumulator by the potential energy that equipment declines, accumulator discharges the potential energy stored when swing arm rises, whole hydraulic system comparatively prior art is compared, and greatly reduces energy consumption, reduce heating, achieve the utilization again of energy.
This programme is achieved by the following technical measures: a kind of Hydraulic Excavator's Boom potential energy recovery system, comprise fuel tank and hydraulic pump, also comprise two master control oil cylinders for driving swing arm to move and an auxiliary cylinder, described auxiliary cylinder is arranged in parallel with two master control oil cylinders respectively, the cylinder bar of described two master control oil cylinders and the cylinder bar of auxiliary cylinder are synchronized with the movement, described hydraulic pump is communicated with through the rod chamber of the rod chamber of the second reversal valve and two master control oil cylinders, rodless cavity and auxiliary cylinder, and the rodless cavity of described auxiliary cylinder is communicated with accumulator.
Further improvement of the present invention also has, and is provided with one way valve between the high-voltage oil cavity of described second reversal valve and low pressure oil pocket.Can be implemented in short time oil return side hydraulic oil by one way valve and return to oil-feed side, such oil-feed effluent amount increases, and speed improves, and achieves flow regeneration function.
Further improvement of the present invention also has, what described second reversal valve adopted is three six-way transfer valves, P mouth, the N mouth of described second reversal valve are all communicated with hydraulic pump, the O mouth of described second reversal valve is communicated with fuel tank, the A mouth of described second reversal valve is communicated with the rodless cavity of two master control oil cylinders, the B mouth of described second reversal valve is communicated with the rod chamber of two master control cylinder rod chambers, auxiliary cylinder, the M mouth of described second reversal valve and the inlet communication of flow control valve, the outlet of described flow control valve is communicated with fuel tank.
Use for the first time in order to avoid accumulator or cause the reduction of energy-storage system pressure because of leakage, further improvement of the present invention also has, the outlet of described hydraulic pump has the first reversal valve having and fill energy and exoergic function, by controlling the valve core movement of the first reversal valve, accumulator being completed and fills energy and exoergic.
Further improvement of the present invention also has, what described first reversal valve adopted is three six-way transfer valves, P mouth, the N mouth of described first reversal valve are all communicated with described hydraulic pump, the O mouth of described first reversal valve is communicated with fuel tank, the M mouth of described first reversal valve is communicated with described flow control valve, and the B mouth of described first reversal valve is communicated with described accumulator through stop valve.
Further improvement of the present invention also has, and the rodless cavity of described auxiliary cylinder is directly communicated with by oil pipe with accumulator, namely on oil pipe, does not arrange any controlling organization, has energy recovery rate high, the feature of action quickness and high efficiency.
Further improvement of the present invention also has, and the exit of described hydraulic pump is communicated with overflow valve, and the outlet of this overflow valve is communicated with fuel tank.
Further improvement of the present invention also has, and what described accumulator adopted is piston accumulator.
Technical characterstic of the present invention and good effect are: (1) the present invention includes fuel tank and hydraulic pump, also comprise two master control oil cylinders for driving swing arm to move and an auxiliary cylinder, described auxiliary cylinder is arranged in parallel with two master control oil cylinders respectively, the cylinder bar of described two master control oil cylinders and the cylinder bar of auxiliary cylinder are synchronized with the movement, Hydraulic Excavator's Boom of the present invention adopts three cylinder structures to drive, these are compared with an oil cylinder of the prior art or two oil cylinders, the pressure that master control oil cylinder needs comparatively prior art reduces greatly, thus save the energy, shorten the time that boom cylinder promotes, improve the operating efficiency of complete machine,
(2) described hydraulic pump is communicated with through the rod chamber of the rod chamber of the second reversal valve and two master control oil cylinders, rodless cavity and auxiliary cylinder, the rodless cavity of described auxiliary cylinder is communicated with accumulator, by the rodless cavity of described auxiliary cylinder is communicated with accumulator, the potential energy storage that auxiliary cylinder declines is in accumulator, the fault offset stored in accumulator when the cylinder bar of auxiliary cylinder rises rises in order to promote swing arm, energy is utilized again, reaches reduction energy consumption, reduce the object of heating; The rodless cavity of auxiliary cylinder is directly communicated with accumulator, and centre does not arrange any controlling organization, thus has energy regenerating utilization rate high, the feature of action quickness and high efficiency;
(3) be provided with one way valve between the high-voltage oil cavity of described second reversal valve and low pressure oil pocket, the hydraulic oil of hydraulic system mesohigh oil pocket directly enters low pressure oil pocket by one way valve, and the flow of oil-feed side is increased, and improves the speed that swing arm declines.
As can be seen here, compared with prior art, have outstanding substantive distinguishing features and significant progress, its beneficial effect implemented also is apparent in the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention.
In figure, 1 is fuel tank, and 2 is hydraulic pump, and 3 is the second reversal valve, and 4 is overflow valve, and 5 is accumulator, and 6 is flow control valve, and 7 is master control oil cylinder, and 8 is auxiliary cylinder, and 9 is stop valve, and 10 is the first reversal valve, and 11 is one way valve.
Detailed description of the invention
For the technical characterstic of this programme can be clearly demonstrated, below by a detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
Can be found out by accompanying drawing, a kind of Hydraulic Excavator's Boom potential energy recovery system, comprise fuel tank 1 and hydraulic pump 2, also comprise two the master control oil cylinders 7 for driving swing arm to move and an auxiliary cylinder 8, described auxiliary cylinder 8 is arranged in parallel with two master control oil cylinders 7 respectively, the cylinder bar of described two master control oil cylinders 7 and the cylinder bar of auxiliary cylinder 8 are synchronized with the movement, the rising of co-controlling swing arm or decline, master control oil cylinder 7 is conventional hydraulic jack, auxiliary cylinder 8 has energy recovery function, and auxiliary cylinder 8 is between two master control oil cylinders 7.Described hydraulic pump 2 is communicated with through the rod chamber of the rod chamber of the second reversal valve 3 and two master control oil cylinders 7, rodless cavity and auxiliary cylinder 8, the rodless cavity of described auxiliary cylinder 8 is directly communicated with by an oil pipe with accumulator 5, does not have control member between auxiliary cylinder 8 and accumulator 5.
The loculus fuel feeding simultaneously of cause two master control oil cylinders 7 and an auxiliary cylinder 8, for ensureing swing arm decrease speed, traffic demand in hydraulic system is just larger, the present invention is provided with one way valve 11 between the high-voltage oil cavity and low pressure oil pocket of described second reversal valve 3, can be implemented in short time oil return side hydraulic oil by one way valve 11 and return to oil-feed side, such oil-feed effluent amount increases, and speed improves, and achieves flow regeneration function.
In the present invention, what described second reversal valve 3 adopted is three six-way transfer valves, P mouth, the N mouth of described second reversal valve 3 are all communicated with hydraulic pump 2, the O mouth of described second reversal valve 3 is communicated with fuel tank 1, the A mouth of described second reversal valve 3 is communicated with the rodless cavity of two master control oil cylinders 7, the B mouth of described second reversal valve 3 is communicated with the rod chamber of two master control oil cylinder 7 rod chambers, auxiliary cylinder 8, the M mouth of described second reversal valve 3 is communicated with flow control valve 6, and the outlet of described flow control valve 6 is communicated with fuel tank 1.
The accumulation of energy process that swing arm declines: when handling swing arm pilot handle, the spool that pilot pressure promotes the second reversal valve 3 is moved to the left, now, the hydraulic oil exported by hydraulic pump 2 is through the P mouth of the second reversal valve 3, B mouth enters into the rod chamber of two master control oil cylinders 7 and the rod chamber of auxiliary cylinder 8, swing arm is declined, the hydraulic oil of the rodless cavity of two master control oil cylinders 7 is through the A mouth of the second reversal valve 3, O mouth flows back into fuel tank 1, the rodless cavity of auxiliary cylinder 8 is communicated with accumulator 5 simultaneously, the hydraulic oil of rodless cavity flows into accumulator 5, make the smaller volume of accumulator 5, pressure raises, thus storage of potential energy.
The exergonic process that swing arm rises:
When handling swing arm pilot handle, the spool that pilot pressure promotes the second reversal valve 3 moves right, now, the hydraulic oil of being published books by hydraulic pump 2 is through the second reversal valve 3P mouth, A mouth enters into the rodless cavity of two master control oil cylinders 7, the hydraulic oil of the rod chamber of two master control oil cylinders 7 is through the B mouth of the second reversal valve 3, O mouth flows back into fuel tank 1, simultaneously, the rodless cavity of auxiliary cylinder 8 is communicated with accumulator 5, because of the pressure effect of accumulator 5 inner high voltage gas, the cylinder bar promoting auxiliary cylinder 8 moves upward, auxiliary workmanship, in accumulator 5, gas volume becomes large, pressure reduces, fault offset.
Use for the first time in order to avoid accumulator 5 or affect the effect of accumulator 5 because the reason build-ups of pressure such as leakage decline, the present invention has the first reversal valve 10 at the outlet of described hydraulic pump 2, and described first reversal valve 10 and the second reversal valve 3 are arranged in parallel.What described first reversal valve 10 adopted is three six-way transfer valves, P mouth, the N mouth of described first reversal valve 10 are all communicated with described hydraulic pump 2, the O mouth of described first reversal valve 10 is communicated with fuel tank 1, the M mouth of described first reversal valve 10 is communicated with described flow control valve 6, and the B mouth of described first reversal valve 10 is communicated with accumulator 5 through stop valve 9.Moved by the spool controlling the first reversal valve 10, what achieve accumulator 5 fills energy and exoergic, concrete is: first open stop valve 9, the spool handling the first reversal valve 10 is moved to the left, the hydraulic oil that hydraulic pump 2 exports is input to the hydraulic oil side of accumulator 5 through the P mouth of the first reversal valve 10, B mouth, and after reaching setting pressure, the spool of the first reversal valve 10 gets back to meta, close stop valve 9, fill and can terminate.Exergonic process in contrast, opens reversal valve, and the spool handling the first reversal valve 10 moves right, and the pressure oil in accumulator 5 flows back into fuel tank 1 through the B mouth of the first reversal valve 10, O mouth, and in accumulator 5, pressure reduces, and after exoergic terminates, closes stop valve 9.
The exit of described hydraulic pump 2 is communicated with overflow valve 4, and the outlet of this overflow valve 4 is communicated with fuel tank 1, for the pressure of control system.What described hydraulic pump 2 adopted is variable pump.What described accumulator 5 adopted is piston accumulator.What described first reversal valve 10 and the second reversal valve 3 all adopted is electro-hydraulic reversing valve.
By reference to the accompanying drawings the detailed description of the invention of invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (8)
1. a Hydraulic Excavator's Boom potential energy recovery system, comprise fuel tank and hydraulic pump, it is characterized in that: also comprise two master control oil cylinders for driving swing arm to move and an auxiliary cylinder, described auxiliary cylinder is arranged in parallel with two master control oil cylinders respectively, the cylinder bar of described two master control oil cylinders and the cylinder bar of auxiliary cylinder are synchronized with the movement, described hydraulic pump is communicated with through the rod chamber of the rod chamber of the second reversal valve and two master control oil cylinders, rodless cavity and auxiliary cylinder, and the rodless cavity of described auxiliary cylinder is communicated with accumulator.
2. Hydraulic Excavator's Boom potential energy recovery system according to claim 1, is characterized in that: be provided with one way valve between the high-voltage oil cavity of described second reversal valve and low pressure oil pocket.
3. Hydraulic Excavator's Boom potential energy recovery system according to claim 2, it is characterized in that: what described second reversal valve adopted is three six-way transfer valves, the P mouth of described second reversal valve, N mouth is all communicated with hydraulic pump, the O mouth of described second reversal valve is communicated with fuel tank, the A mouth of described second reversal valve is communicated with the rodless cavity of two master control oil cylinders, the B mouth of described second reversal valve and two master control cylinder rod chambers, the rod chamber of auxiliary cylinder is communicated with, the M mouth of described second reversal valve and the inlet communication of flow control valve, the outlet of described flow control valve is communicated with fuel tank.
4. Hydraulic Excavator's Boom potential energy recovery system according to claim 3, is characterized in that: the outlet of described hydraulic pump has the first reversal valve having and fill energy and exoergic function.
5. Hydraulic Excavator's Boom potential energy recovery system according to claim 4, it is characterized in that: what described first reversal valve adopted is three six-way transfer valves, P mouth, the N mouth of described first reversal valve are all communicated with described hydraulic pump, the O mouth of described first reversal valve is communicated with fuel tank, the M mouth of described first reversal valve is communicated with described flow control valve, and the B mouth of described first reversal valve is communicated with described accumulator through stop valve.
6., according to the arbitrary described Hydraulic Excavator's Boom oil cylinder potential energy recovery system of claim 1-5, it is characterized in that: the rodless cavity of described auxiliary cylinder is directly communicated with by oil pipe with accumulator.
7., according to the arbitrary described Hydraulic Excavator's Boom oil cylinder potential energy recovery system of claim 1-5, it is characterized in that: the exit of described hydraulic pump is communicated with overflow valve, the outlet of this overflow valve is communicated with fuel tank.
8., according to the arbitrary described Hydraulic Excavator's Boom potential energy recovery system of claim 1-5, it is characterized in that: what described accumulator adopted is piston accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510339700.8A CN104988963A (en) | 2015-06-18 | 2015-06-18 | Hydraulic excavator movable arm potential energy recovery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510339700.8A CN104988963A (en) | 2015-06-18 | 2015-06-18 | Hydraulic excavator movable arm potential energy recovery system |
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| CN104988963A true CN104988963A (en) | 2015-10-21 |
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| CN201510339700.8A Pending CN104988963A (en) | 2015-06-18 | 2015-06-18 | Hydraulic excavator movable arm potential energy recovery system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106223391A (en) * | 2016-08-31 | 2016-12-14 | 徐州徐工挖掘机械有限公司 | A kind of excavator energy regenerating and utilize system |
| CN106351277A (en) * | 2016-11-04 | 2017-01-25 | 山东常林机械集团股份有限公司 | Energy-saving excavator movable arm potential energy recycling device |
| CN106629363A (en) * | 2017-01-14 | 2017-05-10 | 中国矿业大学(北京) | Automatic ascending and descending tank curtain door |
| CN106678110A (en) * | 2015-11-06 | 2017-05-17 | 徐工集团工程机械股份有限公司 | Meso-position negative flow valve, swing arm energy-saving control system and excavator |
| WO2017105228A1 (en) * | 2015-12-16 | 2017-06-22 | Aidbv Holding B.V. | Drilling rig and method for use thereof |
| NL2015988A (en) * | 2015-12-18 | 2017-06-27 | Aidbv Holding B V | Drilling rig and method for use thereof. |
| CN110671393A (en) * | 2019-11-14 | 2020-01-10 | 山河智能装备股份有限公司 | Energy recycling device |
| CN112343871A (en) * | 2020-11-16 | 2021-02-09 | 广西柳工机械股份有限公司 | Auxiliary lifting hydraulic system and engineering machinery |
| CN112343872A (en) * | 2020-11-16 | 2021-02-09 | 广西柳工机械股份有限公司 | Auxiliary lifting hydraulic system and engineering machinery |
-
2015
- 2015-06-18 CN CN201510339700.8A patent/CN104988963A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678110A (en) * | 2015-11-06 | 2017-05-17 | 徐工集团工程机械股份有限公司 | Meso-position negative flow valve, swing arm energy-saving control system and excavator |
| WO2017105228A1 (en) * | 2015-12-16 | 2017-06-22 | Aidbv Holding B.V. | Drilling rig and method for use thereof |
| NL2015988A (en) * | 2015-12-18 | 2017-06-27 | Aidbv Holding B V | Drilling rig and method for use thereof. |
| CN106223391A (en) * | 2016-08-31 | 2016-12-14 | 徐州徐工挖掘机械有限公司 | A kind of excavator energy regenerating and utilize system |
| CN106351277A (en) * | 2016-11-04 | 2017-01-25 | 山东常林机械集团股份有限公司 | Energy-saving excavator movable arm potential energy recycling device |
| CN106629363A (en) * | 2017-01-14 | 2017-05-10 | 中国矿业大学(北京) | Automatic ascending and descending tank curtain door |
| CN106629363B (en) * | 2017-01-14 | 2019-07-30 | 中国矿业大学(北京) | A kind of automatic lifting tank curtain door |
| CN110671393A (en) * | 2019-11-14 | 2020-01-10 | 山河智能装备股份有限公司 | Energy recycling device |
| CN112343871A (en) * | 2020-11-16 | 2021-02-09 | 广西柳工机械股份有限公司 | Auxiliary lifting hydraulic system and engineering machinery |
| CN112343872A (en) * | 2020-11-16 | 2021-02-09 | 广西柳工机械股份有限公司 | Auxiliary lifting hydraulic system and engineering machinery |
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