CN103669462A - Mixed-type hydraulic device - Google Patents
Mixed-type hydraulic device Download PDFInfo
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- CN103669462A CN103669462A CN201310431947.3A CN201310431947A CN103669462A CN 103669462 A CN103669462 A CN 103669462A CN 201310431947 A CN201310431947 A CN 201310431947A CN 103669462 A CN103669462 A CN 103669462A
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Abstract
The invention provides a mixed-type hydraulic device. The mixed-type hydraulic device is capable of recovering high-pressure return oil, which does not contribute to motions of actuators, as energy. The mixed-type hydraulic device comprises the actuators (1, 81A, 81B); a hydraulic pump (3) transmitting working oil to the actuators (1, 81A, 81B); a hydraulic motor (102) for regeneration, which is supplied with working oil returning to an oil tank from the actuators (1, 81A, 81B); a generator (103) driven by the hydraulic motor (102) for regeneration; and a main release valve (21) controlling the discharge pressure of the hydraulic pump (3). The downstream side of the main release valve (21) is connected with the upstream side of the hydraulic motor (102) for regeneration.
Description
Technical field
The present invention relates to mixing type hydraulic device.
Background technology
In the past, in TOHKEMY 2012-82953 communique (patent documentation 1), recorded mixing type hydraulic device.This mixing type hydraulic device has actuator, the hydraulic pump to above-mentioned actuator transportation work oil, the regeneration use hydraulic motor that the working oil that return to fuel tank from above-mentioned actuator is provided and the generator of being used fluid motor-driven by above-mentioned regeneration.
And the working oil that will return to fuel tank from above-mentioned actuator offers regeneration hydraulic motor, by regeneration, with hydraulic motor, generator is driven, can access recovered energy.
In addition, in above-mentioned mixing type hydraulic device in the past, the main relief valve of controlling the discharge pressure of above-mentioned hydraulic pump is connected with fuel tank.
Therefore, in digging operation at pan soil etc., for the actuator of this operation, move hardly, the working oil of the action of this actuator not being made contributions is given up fuel tank from main relief valve.
Like this, in the situation that there is following problem in above-mentioned mixing type hydraulic device in the past: externally large, the actuator of the load of environment does not move, and a large amount of energy are given up with being wasted.
Prior art document
Patent documentation 1: TOHKEMY 2012-82953 communique
Summary of the invention
The problem that invention will solve
Therefore, problem of the present invention be to provide a kind of can be using the mixing type hydraulic device that oil reclaims as energy that returns of the high pressure of the action of actuator not being made contributions.
For the means of dealing with problems
In order to solve above-mentioned problem, mixing type hydraulic device of the present invention is characterised in that to have:
Actuator;
Hydraulic pump, it is to above-mentioned actuator transportation work oil;
Regeneration hydraulic motor, it is provided the working oil that will return to fuel tank from above-mentioned actuator;
Generator, it is by above-mentioned regeneration fluid motor-driven; And
Main relief valve, it controls the discharge pressure of above-mentioned hydraulic pump,
The downstream of above-mentioned main relief valve is connected with the upstream side of hydraulic motor with above-mentioned regeneration.
According to the mixing type hydraulic device of this invention, to above-mentioned regeneration, with hydraulic motor, provide the working oil that will return to fuel tank from actuator.The downstream of above-mentioned main relief valve is connected with the upstream side of hydraulic motor with above-mentioned regeneration.
Thus, the working oil flowing out from above-mentioned main relief valve is offered to above-mentioned regeneration hydraulic motor, or, this working oil and the working oil returning from above-mentioned actuator are converged, by above-mentioned regeneration, with hydraulic motor, recover energy.
Therefore, the oil that returns of the high pressure of the action of above-mentioned actuator not being made contributions can be reclaimed as energy.That is, in the situation that actuator does not move due to operating environment, main relief valve carries out work, almost all flows to regeneration hydraulic motor, even if so also can reclaim a large amount of energy at short notice from the working oil of hydraulic pump.For example, in 20 tons of excavators, in the excavation rotary manipulation pattern of standard, every opening relief valve of 1 second, has the effect of engine load being cut down to the energy of 1.5% left and right.
In addition, the mixing type hydraulic device of an embodiment has:
Regeneration relief valve, itself and above-mentioned regeneration are connected in parallel with hydraulic motor;
Inverter, it is connected with above-mentioned generator; And
Control device, it is via rotating speed or the moment of torsion of the above-mentioned generator of above-mentioned inverter control.
According to the mixing type hydraulic device of this embodiment, regeneration is connected in parallel with hydraulic motor with relief valve and above-mentioned regeneration, therefore can prevent from exceedingly flowing through the working oil providing with hydraulic motor to regeneration, can prevent the fault of generator etc.
In addition, above-mentioned control device, via rotating speed or the moment of torsion of inverter control generator, can prevent that the rotating speed of generator is excessive thus.If the rotating speed of above-mentioned generator is excessive, the load of generator increases, and heating also increases, and need to take the countermeasure of generating heat, and can cause the rising of manufacturing cost.Therefore, prevent that the rotating speed of above-mentioned generator is excessive, can suppress the rising of manufacturing cost.
The effect of invention
According to the mixing type hydraulic device of this invention, the downstream of above-mentioned main relief valve is connected with the upstream side of hydraulic motor with above-mentioned regeneration, therefore the oil that returns of the high pressure of the action of above-mentioned actuator not being made contributions can be reclaimed as energy.
Accompanying drawing explanation
Fig. 1 is the circuit diagram that the mixing type hydraulic device of one embodiment of the present invention is shown.
Fig. 2 is the curve map that the relation between the rotary speed of generator and the moment of torsion of generator is shown.
Label declaration
1 hydraulic motor (actuator) for revolution
2 direction switch valves
3 hydraulic pumps
4 motors
5 fuel tanks
7 hydraulic energy regenerating units
8 revolving bodies
9 electro-motors
21 main relief valves
81A, 81B hydraulic cylinder (actuator)
101 regeneration relief valves
102 regeneration hydraulic motors
103 generators
104 inverters
105 electrical storage devices
106 rotation speed sensors
107 control device
The specific embodiment
Below, by illustrated embodiment, in more detail invention is described.
Fig. 1 is the circuit diagram that the mixing type hydraulic device of one embodiment of the present invention is shown.As shown in Figure 1, above-mentioned mixing type hydraulic device there is the direction switch valve 2 of 6 port 3 positions of the gyratory directions that makes the rotating hydraulic motor 1 for revolution of revolving body 8, switches revolving body 8, to the hydraulic pump 3 of hydraulic motor 1 transportation work oil and the motor 4 that drives hydraulic pump 3 for revolution.Above-mentioned revolution is an example of actuator of the present invention with hydraulic motor 1.
In addition, above-mentioned mixing type hydraulic device has a plurality of hydraulic cylinder 81A, 81B, and above-mentioned hydraulic pump 3 is to each hydraulic cylinder 81A, 81B transportation work oil.Between hydraulic pump 3 and each hydraulic cylinder 81A, 81B, be provided with (not shown) cylinder transfer valve switching flowing to the working oil of hydraulic cylinder 81A, 81B.A plurality of hydraulic cylinder 81A, 81B are examples of actuator of the present invention.Label 82A, 82B are sequence valves.
Above-mentioned hydraulic pump 3 is the hydraulic pumps such as gear pump, trochoid pump, vane pump, piston pump, and it sucks working oil discharge from fuel tank 5.
Above-mentioned direction switch valve 2 is connected with hydraulic pump 3 via the 1st pipe arrangement 51, and with hydraulic motor 1, is connected with revolution via the 2nd and the 3rd pipe arrangement 52,53.This direction switch valve 2 has the 1st and the 2nd pilot pressure receiving portion 2a, 2b, and the 1st pilot pressure receiving portion 2a is connected with pilot valve 6 via the 1st guide's pipe arrangement 61, and on the other hand, the 2nd pilot pressure receiving portion 2b is connected with pilot valve 6 via the 2nd guide's pipe arrangement 62.The the 1st and the 2nd pilot pressure receiving portion 2a, 2b accept first pilot, and the neutral position of the position of direction switch valve 2 from figure switches to dextrorotation position (position on the right side in figure) or left-handed position (position in the left side in figure) thus.In addition, above-mentioned pilot valve 6 is connected with not shown pioneer pump.
In above-mentioned neutral position, the 1st port P1 and the 4th port P4 are interconnected, and the 2nd port P2, the 3rd port P3, the 5th port P5 and the 6th port P6 are in off-state.Now, the working oil of being discharged by hydraulic pump 3 is by after the 1st, the 4th port P1, P4, flows through and return to fuel tank 5 in the 4th, the 5th pipe arrangement 54,55.
In above-mentioned dextrorotation position, the 2nd port P2 and the 6th port P6 are interconnected, and the 3rd port P3 and the 5th port P5 are interconnected, and the 1st port P1 and the 4th port P4 are in off-state.Now, the working oil of being discharged by hydraulic pump 3 is by after the 2nd, the 6th port P2, P6, flows through and supply with hydraulic motor 1 for revolution in the 3rd pipe arrangement 53.
In above-mentioned left-handed position, the 2nd port P2 and the 5th port P5 are interconnected, and the 3rd port P3 and the 6th port P6 are interconnected, and the 1st port P1 and the 4th port P4 are in off-state.Now, the working oil of being discharged by above-mentioned hydraulic pump 3 is by after the 2nd, the 5th port P2, P5, flows through and supply with hydraulic motor 1 for revolution in the 2nd pipe arrangement 52.
Above-mentioned the 1st pipe arrangement 51 is provided with the 1st flap valve (check valve) 11.On the 1st pipe arrangement 51, between the 1st flap valve 11 and hydraulic pump 3, be connected with the above-mentioned cylinder transfer valve flowing of the working oil that switches each hydraulic cylinder 81A, 81B.
Between above-mentioned the 1st flap valve 11 and above-mentioned hydraulic pump 3, be connected with one end of the 6th pipe arrangement 56.Above-mentioned the 6th pipe arrangement 56 is provided with main relief valve 21.That is, main relief valve 21 is connected between above-mentioned direction switch valve 2 and above-mentioned cylinder use transfer valve and hydraulic pump 3.
Above-mentioned main relief valve 21 makes the pressure of the working oil in the 1st pipe arrangement 51 be no more than predetermined value.That is, main relief valve 21 is controlled the discharge pressure of hydraulic pump 3.
Above-mentioned the 2nd pipe arrangement 52 is connected with one end of the 7th, the 8th pipe arrangement 57,58, and the other end of the 3rd pipe arrangement 53 and the 7th, the 8th pipe arrangement 57,58 is connected.Above-mentioned the 7th pipe arrangement 57 is provided with the 1st, the 2nd sequence valve 22,23, makes the pressure of the working oil in the 2nd, the 3rd pipe arrangement 52,53 be no more than predetermined value (for example 28MPa).On the other hand, above-mentioned the 8th pipe arrangement 58 is provided with the 2nd, the 3rd flap valve 12,13, and making does not become vacuum in the 2nd, the 3rd pipe arrangement 52,53.
Above-mentioned the 1st sequence valve 22 has the inflow entrance being connected with the 2nd pipe arrangement 52 via the 7th pipe arrangement 57, and the outlet opening of discharging the working oil flowing into from this inflow entrance.The working oil of discharging from this outlet opening flows to the 9th pipe arrangement 59.
Above-mentioned the 2nd sequence valve 23 has the inflow entrance being connected with the 3rd pipe arrangement 53 via the 7th pipe arrangement 57, and the flow export of discharging the working oil flowing into from this inflow entrance.The working oil of discharging from this outlet opening flows to the 9th pipe arrangement 59.
In addition, above-mentioned mixing type hydraulic device adopts so-called hydraulic shunting mode, has the hydraulic energy regenerating unit 7 that the kinergety of the working oil flowing out with hydraulic motor 1 from revolution is converted to electric flux.This hydraulic energy regenerating unit 7 has relief valve 101 for regeneration, hydraulic motor 102, generator 103, inverter 104, electrical storage device 105, rotation speed sensor 106 and control device 107 for regeneration.
Above-mentioned regeneration is connected between the 1st sequence valve 22 and the 2nd sequence valve 23 with one end that relief valve 101 is located at the 9th pipe arrangement 59, the 9 pipe arrangements 59.Thus, above-mentioned regeneration is connected with the outlet opening of the 7th pipe arrangement 57 and the 1st, the 2nd sequence valve 22,23 via the 9th pipe arrangement 59 with the inflow entrance of relief valve 101.This regeneration is set to the pressure set points lower than the 1st, the 2nd sequence valve 22,23 by the pressure set points of relief valve 101.For example, if the pressure set points of above-mentioned the 1st, the 2nd sequence valve 22,23 is set as to 28MPa, regeneration is set as to 21MPa by the pressure set points of relief valve 101.
The supply of working oil is accepted in above-mentioned regeneration with hydraulic motor 102, drive generator 103.This regeneration is located at pipe arrangement 108 for regeneration with hydraulic motor 102, and is connected in parallel with relief valve 101 with regeneration.That is, above-mentioned regeneration is used between the inflow entrance of relief valve 101 with outlet opening and regeneration that hydraulic motor 102 is connected to the 1st, the 2nd sequence valve 22,23.
Above-mentioned inverter 104 is connected with generator 103, and controls the frequency of the electric current that offers generator 103.By change frequency, can control rotating speed or the moment of torsion of generator 103, adjust the generated energy of generator 103.
Above-mentioned electrical storage device 105 is connected with generator 103 via inverter 104, and accumulates the electric power being generated electricity by generator 103.This electric power is used by not shown electric installation, can access energy-saving effect.
Above-mentioned rotation speed sensor 106 detects the rotary speed of generator 103.In addition, above-mentioned rotation speed sensor 106 sends to control device 107 by the signal that represents the rotary speed of detected generator 103.
Above-mentioned control device 107 is controlled rotating speed or the moment of torsion of generator 103 via inverter 104.More particularly, above-mentioned control device 107, according to the signal from rotation speed sensor 106, transmits control signal to inverter 104.
In addition, in above-mentioned hydraulic energy regenerating unit 7, the working oil from a plurality of hydraulic cylinder 81A, 81B and regeneration are converged with the working oil of hydraulic motor 102 upstream sides.
That is, in above-mentioned the 9th pipe arrangement 59, with the position of one end of pipe arrangement 108, connector is set being connected with regeneration, this connector is via pipe arrangement 71 connection a plurality of hydraulic cylinder 81A, 81B for cylinder.
The downstream of above-mentioned main relief valve 21 is connected with the upstream side of hydraulic motor 102 with above-mentioned regeneration.That is, the other end of above-mentioned the 6th pipe arrangement 56 is connected with pipe arrangement 71 with cylinder.
Fig. 2 is the curve map that the relation between the rotary speed of above-mentioned generator 103 and the moment of torsion of generator 103 is shown.
The rotating speed of generator 103 that above-mentioned control device 107 carries out or the control of moment of torsion are to carry out can access the mode of the solid line in curve map.More particularly, when the rotary speed of generator 103 reaches R1 from 0, adjust the moment of torsion of generator 103, make the moment of torsion of generator 103 roughly certain.And, when the rotary speed of generator 103 reaches R2, the moment of torsion of generator 103 is sharply increased, suppress the increase of the rotary speed of generator 103.
In addition, when the rotary speed of above-mentioned generator 103 reaches R2, the moment of torsion of generator 103 is T2, but this T2 uses the pressure set points of relief valve 101 corresponding to regeneration.Therefore,, when the moment of torsion of generator 103 is sharply increased, regeneration is opened with relief valve 101.
Accordingly, above-mentioned control device 107 is controlled the rotating speed of generator 103 via inverter 104, can prevent that thus the rotary speed of generator 103 is excessive.
If the rotary speed of above-mentioned generator 103 is excessive, will cause the heating of generator 103 to increase, thereby need to take the countermeasure of generating heat, cause the rising of manufacturing cost.
Therefore, prevent that the rotary speed of above-mentioned generator 103 is excessive, can prevent the rising of manufacturing cost.
In addition, above-mentioned control device 107, according to the rotary speed by the detected generator 103 of rotation speed sensor 106, is controlled rotating speed or the moment of torsion of generator 103, therefore can control accurately the generated energy of generator 103.
In addition, above-mentioned control device 107, according to the rotary speed by the detected generator 103 of rotation speed sensor 106, control rotating speed or the moment of torsion of generator 103, so the response of this control can be good.
According to the mixing type hydraulic device of said structure, to above-mentioned regeneration, with hydraulic motor 102, provide the working oil that will return to fuel tank 5 from actuator (hydraulic motor 1 or above-mentioned hydraulic cylinder 81A, 81B for above-mentioned revolution).The downstream of above-mentioned main relief valve 21 is connected with the upstream side of hydraulic motor 102 with above-mentioned regeneration.
Thus, the working oil flowing out from above-mentioned main relief valve 21 is offered to above-mentioned hydraulic motor 102 regeneration for, or, make this working oil and the working oil that returns from above-mentioned actuator 1,81A, 81B converges, by above-mentioned regeneration, with hydraulic motor 102, recover energy.
Therefore, the oil that returns of the high pressure of the action of above-mentioned actuator 1,81A, 81B not being made contributions can be reclaimed as energy.; in the situation that actuator 1,81A, 81B do not move due to operating environment; main relief valve 21 carries out work, almost all flows to hydraulic motor 102 for regeneration, even if therefore also can reclaim a large amount of energy at short notice from the working oil of hydraulic pump.For example, in 20 tons of excavators, in the excavation rotary manipulation pattern of standard, every opening relief valve of 1 second, has the effect of engine load being cut down to the energy of 1.5% left and right.
In addition, above-mentioned regeneration is connected in parallel with relief valve 101 with hydraulic motor 102 and regeneration, therefore can prevent from exceedingly flowing through the working oil providing with hydraulic motor 102 to regeneration, can prevent the fault of generator 103 grades.
In addition, above-mentioned control device 107 is controlled rotating speed or the moment of torsion of generator 103 via inverter 104, can prevent that thus the rotating speed of generator 103 is excessive.If the rotating speed of generator 103 is excessive, the load of generator 103 increases, and heating also increases, and need to take the countermeasure of generating heat, and can cause the rising of manufacturing cost.Therefore, prevent the excessive rising that can suppress manufacturing cost of rotating speed of generator 103.
In addition, the effect of other structure is identical with the effect of the structure that TOHKEMY 2012-82953 communique is recorded, and therefore the description thereof will be omitted.
In addition, this invention is not limited to above-mentioned embodiment, in the scope that does not change purport of the present invention, can carry out design alteration.
For example, pressure sensor also can be set and replace above-mentioned rotation speed sensor 106, in this situation, pressure sensor detects the outlet opening of the 1st, the 2nd sequence valve 22,23 and the pressure that the working oil between the inflow entrance of relief valve 101 is used in regeneration.And control device 107, according to the pressure signal from pressure sensor, is controlled rotating speed or the moment of torsion of generator 103 via inverter 104.
In addition, flow transmitter also can be set and replace above-mentioned rotation speed sensor 106, in this situation, flow transmitter detects the flow of using the working oil of hydraulic motor 102 by regeneration.And control device 107, according to the flow by the detected working oil of flow transmitter, is controlled rotating speed or the moment of torsion of generator 103 via inverter 104.
In addition, the actuator as above-mentioned revolution with hydraulic motor 1 or above-mentioned hydraulic cylinder 81A, 81B, can be 1, or can be also a plurality of.
Claims (2)
1. a mixing type hydraulic device, is characterized in that, this mixing type hydraulic device has:
Actuator (1,81A, 81B);
Hydraulic pump (3), it is to above-mentioned actuator (1,81A, 81B) transportation work oil;
Regeneration is with hydraulic motor (102), and it is provided the working oil that will return to fuel tank from above-mentioned actuator (1,81A, 81B);
Generator (103), it is by above-mentioned hydraulic motor (102) driving for regeneration; And
Main relief valve (21), it controls the discharge pressure of above-mentioned hydraulic pump (3),
The downstream of above-mentioned main relief valve (21) with above-mentioned for regeneration the upstream side of hydraulic motor (102) be connected.
2. mixing type hydraulic device according to claim 1, is characterized in that, this mixing type hydraulic device has:
Regeneration is with relief valve (101), itself and above-mentioned for regeneration hydraulic motor (102) be connected in parallel;
Inverter (104), it is connected with above-mentioned generator (103); And
Control device (107), it controls rotating speed or the moment of torsion of above-mentioned generator (103) via above-mentioned inverter (104).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-209802 | 2012-09-24 | ||
| JP2012209802A JP2014066259A (en) | 2012-09-24 | 2012-09-24 | Hybrid type hydraulic device |
| JPJP2012-209802 | 2012-09-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103669462A true CN103669462A (en) | 2014-03-26 |
| CN103669462B CN103669462B (en) | 2016-04-27 |
Family
ID=50308175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310431947.3A Expired - Fee Related CN103669462B (en) | 2012-09-24 | 2013-09-22 | Mixing type hydraulic device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014066259A (en) |
| CN (1) | CN103669462B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062386A (en) * | 2014-06-26 | 2016-10-26 | 日立建机株式会社 | Work machine |
| CN106545534A (en) * | 2016-01-21 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Potential energy recycle and reuse system and rotary drilling rig |
| CN106958561A (en) * | 2017-03-21 | 2017-07-18 | 杭州蓝力电动科技有限公司 | Dual power supply type engineering machinery |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6605242B2 (en) * | 2015-07-08 | 2019-11-13 | 株式会社神戸製鋼所 | Hydraulic drive device for work machine |
| DE102021001733A1 (en) * | 2021-04-03 | 2022-10-06 | Hydac Fluidtechnik Gmbh | contraption |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101091065A (en) * | 2005-06-06 | 2007-12-19 | 新履带牵引车三菱有限公司 | Fluid pressure circuit, energy recovery device, and fluid pressure recovery circuit for working machine |
| US20090036264A1 (en) * | 2005-06-06 | 2009-02-05 | Shin Caterpillar Mitsubishi Ltd. | Work machine |
| JP2012082953A (en) * | 2010-09-17 | 2012-04-26 | Daikin Industries Ltd | Hybrid type hydraulic device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001197785A (en) * | 1999-11-04 | 2001-07-19 | Shin Caterpillar Mitsubishi Ltd | Circuit device |
| JP2003049809A (en) * | 2001-08-07 | 2003-02-21 | Hitachi Constr Mach Co Ltd | Pressure oil energy recovering device and construction machine with the same |
-
2012
- 2012-09-24 JP JP2012209802A patent/JP2014066259A/en active Pending
-
2013
- 2013-09-22 CN CN201310431947.3A patent/CN103669462B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101091065A (en) * | 2005-06-06 | 2007-12-19 | 新履带牵引车三菱有限公司 | Fluid pressure circuit, energy recovery device, and fluid pressure recovery circuit for working machine |
| US20090036264A1 (en) * | 2005-06-06 | 2009-02-05 | Shin Caterpillar Mitsubishi Ltd. | Work machine |
| JP2012082953A (en) * | 2010-09-17 | 2012-04-26 | Daikin Industries Ltd | Hybrid type hydraulic device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106062386A (en) * | 2014-06-26 | 2016-10-26 | 日立建机株式会社 | Work machine |
| CN106545534A (en) * | 2016-01-21 | 2017-03-29 | 徐工集团工程机械股份有限公司 | Potential energy recycle and reuse system and rotary drilling rig |
| CN106958561A (en) * | 2017-03-21 | 2017-07-18 | 杭州蓝力电动科技有限公司 | Dual power supply type engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103669462B (en) | 2016-04-27 |
| JP2014066259A (en) | 2014-04-17 |
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Granted publication date: 20160427 Termination date: 20200922 |