CN202833451U - Energy recycling and reusing device - Google Patents
Energy recycling and reusing device Download PDFInfo
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- CN202833451U CN202833451U CN 201220487299 CN201220487299U CN202833451U CN 202833451 U CN202833451 U CN 202833451U CN 201220487299 CN201220487299 CN 201220487299 CN 201220487299 U CN201220487299 U CN 201220487299U CN 202833451 U CN202833451 U CN 202833451U
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- 238000004064 recycling Methods 0.000 title abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 238000005381 potential energy Methods 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims description 91
- 238000011084 recovery Methods 0.000 claims description 44
- 238000005086 pumping Methods 0.000 claims description 6
- 241000220317 Rosa Species 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 238000004146 energy storage Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000003028 elevating effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000004134 energy conservation Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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Abstract
The utility model relates to an energy recycling and reusing device which comprises a cargo boom module and a hydraulic system. When the energy recycling and reusing device lowers the cargo boom, low-pressure oil is converted into high-pressure oil which is stored in an energy storage device. When the cargo boom is elevated, the high-pressure oil assists in elevating the cargo boom. A full hydraulic system is used in the energy recycling and reusing device, potential energy generated when the cargo boom is lowered is converted into pressure of the fluid and then stored in the hydraulic energy storage device and used for lifting a heavy object next time. The potential energy obtained by consuming power is regenerated and the load and the power rate in driving a main hydraulic pump are reduced. The energy recycling and reusing device is high in efficiency of recycling and reusing, obvious in benefits from saving energy and reducing emission, easy to achieve, low in investment and long in service life. When configuration in newly manufacture or addition in modifying an old machine is needed, the energy recycling and reusing device can be widely applied to large engineering machinery such as excavating machinery, loading machinery and crane hoisting equipment.
Description
Technical field
The utility model relates to a kind of energy recovery and reuse device, especially relates to a kind of energy recovery and reuse device of shear leg deadweight potential energy.
Background technique
Engineering machinery is owing to using the characteristics such as wide, that quantity is many, oil consumption is high, discharging is poor, to one of efficient, energy-conservation target that has become state, inside and outside engineering machinery researcher exploration, pursuit of its realization.The energy-conservation research of Construction Machinery System mainly launches from two aspects at present: based on the energy-conservation research of system control strategy and controlling method with based on the energy-conservation research of system architecture.Energy-conservation research based on system architecture comprises the energy-conservation research of reclaiming based on valve control system improvement, power source system improvement, energy.The energy-conservation research of the engineering machinery that reclaims based on energy comprises that mechanical type, hydraulic type, electric energy reclaim.Hydraulic type reclaims and adopts accumulator as energy-storage travelling wave tube, and accumulator can store and the release pressure energy, and its stable performance can be satisfied the requirement of engineering machinery fast energy-saving.Electric reclaims electric energy-storage travelling wave tube battery or the capacitors of adopting more, and mechanical energy is converted into electrical power storage and utilization.
With regard to crane gear, the potential energy that the energy of the crane gear of studying on the engineering at present reclaims main research shear leg reclaims, wherein most of electric way of recycling that adopts.There is the problem that equipment is complicated, cost is higher in the electric energy reclaiming method at present, because the cost of electric energy-storage travelling wave tube and generator is higher, limited the application in practice of this recovery scheme, and the repeatedly conversion of mechanical energy, pressure energy, electric energy has also reduced the utilization ratio that energy reclaims.
In addition, in the existing hydraulically powered hoist, when the needs shear leg rose, high-voltage oil liquid entered the large chamber of the oil cylinder that links to each other with shear leg, and pushing piston drives piston rod and protrudes upward, thereby so that the shear leg that links to each other with piston rod rising; When the needs shear leg descended, high-voltage oil liquid entered the loculus of the oil cylinder that links to each other with shear leg, and pushing piston drives piston rod and retracts downwards, thereby so that the shear leg that links to each other with piston rod descends, simultaneously, the low pressure fluid in the large chamber of oil cylinder is expelled back into fuel tank.Because the deadweight of hydraulically powered shear leg is very large, the potential energy of its generation is also very large, consequent hydraulic energy is also larger, in the prior art, such as CN202056123U, it discloses a kind of potential energy of shear leg deadweight that utilizes and has reclaimed accumulator, but the problem of its existence is to realize that energy reclaims and the combination of main oil hydraulic circuit, and system coordination is relatively poor.In addition, CN 101408213 discloses a kind of hybrid power engineering mechanical accumulator-hydraulic motor energy recovery system, it is mainly by the complicated electrical equipment conversion equipment of a cover such as variable-frequency motor, rectification/inverter, pressure transducer, its process that electrical equipment conversion equipment is set is complicated, cost is higher, is unfavorable for using.
The model utility content
For the problems referred to above of the prior art, the utility model provides a kind of energy recovery and reuse device of shear leg deadweight potential energy, the energy recovery and reuse device of this shear leg deadweight potential energy utilizes full hydraulic system control, realized that controllably energy reclaims and the combination of main oil hydraulic circuit, system coordination is good, in addition, do not adopt the complicated electrical equipment conversion equipment such as variable-frequency motor, rectification/inverter, pressure transducer, saved cost.And only have the conversion of potential energy and pressure energy, improve the utilization ratio that energy reclaims.
The technological scheme of the energy recovery and reuse device of shear leg deadweight potential energy of the present utility model is as follows:
A kind of energy recovery and reuse device of shear leg deadweight potential energy, described energy recovery and reuse device comprises: lift arm assembly and hydraulic system; Described lift arm assembly comprises shear leg 10 and weight 7; Described hydraulic system comprises: the Hydraulic Main pumping system, and this Hydraulic Main pumping system comprises hydraulic pressure main pump 2, pioneer pump 3 and the motor that drives hydraulic pressure main pump 2 and pioneer pump 3; The oil cylinder 9 that is connected with shear leg 10, described oil cylinder comprises cylinder barrel, piston and piston rod, and piston rod one end links to each other with piston, and the other end links to each other with shear leg, and stretching out and retracting of piston rod drives shear leg rising or decline; Hydraulic main valve 4, this hydraulic main valve are controlled the flow direction of oil cylinder fluid between hydraulic pressure main pump 2 and oil cylinder 9; It is characterized in that: described hydraulic system also comprises the energy recovery and reuse system, and this energy recovery and reuse system comprises the first multi-way valve 11, the second multi-way valve 5, equipment 16 and accumulator 12 boost; The first multi-way valve 11 is connected between the entrance of the large chamber of oil cylinder and the equipment 16 that boosts, and accumulator 12 is connected to the outlet of the equipment of boosting 16, and the second multi-way valve 5 connects between the outlet and the large chamber of oil cylinder of the equipment 16 that boosts, and is communicated with described accumulator 12 fluids; When shear leg 10 descended, described energy recovery and reuse system can be transformed into high pressure oil with the low pressure oil that flows out in the oil cylinder 9 large chambeies and be stored in the accumulator 12; When shear leg 10 rose, described energy recovery and reuse system can be discharged into the high pressure oil in the accumulator 12 again in the large chamber of oil cylinder 9 and be reused.
The energy recovery and reuse device of shear leg deadweight potential energy of the present utility model utilizes full hydraulic system, the potential energy that shear leg is descended partly converts the pressure energy of fluid to and is stored in the hydraulic accumulator, and for next lifting weight, the potential energy that consumption of power is obtained partly obtains regeneration, to reduce load and the power that drives the hydraulic pressure main pump, energy recovery and reuse device of the present utility model reclaims and the regeneration efficiency height, the energy-saving and emission-reduction remarkable benefit.Simple and easy to do, little investment, the life-span is long.When newly making configuration or acquire during retrofitting of used machine all can, can be widely used in the large-scale engineering machineries such as excavation machinery, loading machine and crane gear.
Description of drawings
When reading following detailed description about accompanying drawing and embodiment, these and other feature of the present utility model, aspect and advantage will be better understood, wherein:
Fig. 1 is the hydraulic system principle figure of the energy recovery and reuse device of shear leg deadweight potential energy of the present utility model.
Among the figure, 1-pilot handle, 2-hydraulic pressure main pump, the 3-pioneer pump, 4-hydraulic main valve, 5-the second multi-way valve, 6-the 3rd one-way valve, 7-weight, 8-the second one-way valve, the 9-oil cylinder, 10-shear leg, 11-the first multi-way valve, the 12-accumulator, 13-relief valve, 14-the first one-way valve, 15-the 4th one-way valve, the 16-equipment that boosts
Embodiment
The utility model discloses a kind of energy recovery and reuse device of shear leg deadweight potential energy, described energy recovery and reuse device comprises: lift arm assembly and hydraulic system; Described lift arm assembly comprises shear leg 10 and weight 7; Described hydraulic system comprises: the Hydraulic Main pumping system, and this Hydraulic Main pumping system comprises hydraulic pressure main pump 2, pioneer pump 3 and the motor that drives hydraulic pressure main pump 2 and pioneer pump 3; The oil cylinder 9 that is connected with shear leg 10, described oil cylinder comprises cylinder barrel, piston and piston rod, and piston rod one end links to each other with piston, and the other end links to each other with shear leg, and stretching out and retracting of piston rod drives shear leg rising or decline; Hydraulic main valve 4, this hydraulic main valve are controlled the flow direction of oil cylinder fluid between hydraulic pressure main pump 2 and oil cylinder 9; It is characterized in that: described hydraulic system also comprises the energy recovery and reuse system, and this energy recovery and reuse system comprises the first multi-way valve 11, the second multi-way valve 5, equipment 16 and accumulator 12 boost; The first multi-way valve 11 is connected between the entrance of the large chamber of oil cylinder and the equipment 16 that boosts, and accumulator 12 is connected to the outlet of the equipment of boosting 16, and the second multi-way valve 5 connects between the outlet and the large chamber of oil cylinder of the equipment 16 that boosts, and is communicated with described accumulator 12 fluids; When shear leg 10 descended, described energy recovery and reuse system can be transformed into high pressure oil with the low pressure oil that flows out in the oil cylinder 9 large chambeies and be stored in the accumulator 12; When shear leg 10 rose, described energy recovery and reuse system can be discharged into the high pressure oil in the accumulator 12 again in the large chamber of oil cylinder 9 and be reused.
In a preferred embodiment, described energy recovery and reuse device is transformed into high pressure oil by the described equipment 16 of boosting with low pressure oil.Thereby when needs upgrade weighing arm, with the pressure oil joint supply of high pressure oil and the hydraulic pressure main pump large chamber to oil cylinder, impel piston rod to drive shear leg and stretch out.
The described equipment 16 that boosts comprises oil hydraulic motor and oil hydraulic pump, the running shaft of oil hydraulic motor links to each other with the live axle of oil hydraulic pump, the fluid that flows out from the first multi-way valve 11 enters oil hydraulic motor, and oil hydraulic motor rotarily drives hydraulic pump works, and hydraulic pump works is pumped into fluid in the accumulator 12.
Because the discharge capacity of described oil hydraulic motor, has therefore realized the pressure oil with low pressure greater than described hydraulic pressure pump delivery and has been converted to high-pressure oil and is stored in the accumulator, for follow-up operation, realized the recovery and reuse of energy.
Described outlet of boosting equipment 16 is provided with the 4th one-way valve 15, and this one-way valve allows hydraulic pressure to flow to accumulator 12 from the equipment of boosting, and prevents from flowing backwards, and avoids fluid to the impact of pump.
The entrance of the outlet of described the 4th one-way valve 15 and accumulator 12 is communicated with relief valve 13 fluids, and the delivery pressure of oil hydraulic pump is set by described relief valve, can set easily the delivery pressure of accumulator by relief valve, need not other control panels.
Described hydraulic main valve 4 is the 3-position 4-way solenoid directional control valve, and described the first multi-way valve 11 and the second multi-way valve 5 are the 2/2-way solenoid directional control valve, and is can corresponding control signal easy, quickly the flow direction of fluid is made control.
Described energy recovery and reuse device also comprises pilot handle 1, and the oil outlet of pioneer pump is communicated with the pressure oil input end of pilot handle; Pilot handle comprises the first control wiring and the second control wiring, and described the first control wiring links to each other with the control end of the first multi-way valve 11 and the left control end end of hydraulic main valve 4, and described the second control wiring links to each other with right control end with the control end of the second multi-way valve 5.
When the needs shear leg descends, pilot handle 1 is pulled the shear leg lowering position, described the first control wiring excites the control end of the first multi-way valve 11 and the left control end of hydraulic main valve 4, so that the first multi-way valve is in the enable possition, and so that hydraulic main valve 4 is in left position, the pressure oil of hydraulic pressure main pump 2 enters the loculus of oil cylinder 9, impels piston rod to descend, and the large chamber of oil cylinder is communicated with the entrance of the equipment of boosting by the multi-way valve of opening.At described the first multi-way valve 11 with boost and be connected with the first one-way valve 14 between the equipment 16, it be so that can flow to the entrance of the equipment of boosting from the hydraulic oil of the first multi-way valve, and prevents that fluid from flowing backwards.
When the needs shear leg rises, pilot handle 1 is pulled the shear leg lifting position, described the second control wiring excites the control end of the second multi-way valve 11 and the right control end of hydraulic main valve 4, so that the second multi-way valve is in the enable possition, at this moment, the high pressure oil in the accumulator 12 enters the large chamber of oil cylinder by the second multi-way valve; Simultaneously, so that hydraulic main valve 4 is in right position, the pressure oil of hydraulic pressure main pump 2 enters the large chamber of oil cylinder 9, impels piston rod to rise.Be provided with the second one-way valve 8 between hydraulic main valve 4 and oil cylinder 9 large chambeies, its permission enters the large chamber of oil cylinder from the fluid of hydraulic main valve 4, and prevents from flowing backwards.Be provided with the 3rd one-way valve 6 between the second multi-way valve 5 and the second one-way valve 8, it allows to enter the large chamber of oil cylinder from the fluid of the second multi-way valve 5 by the second one-way valve 8, and prevents from flowing backwards.
The energy recovery and reuse device of the disclosed a kind of shear leg deadweight potential energy of the utility model can utilize pilot handle and hydraulic main valve, control wiring between the first and second multi-way valve is controlled easily, realize hydraulic main valve and the first multi-way valve, the teamwork of hydraulic main valve and the second multi-way valve, cooperation coordinated with each other, controllably, the potential energy that shear leg is descended partly converts the pressure energy of fluid to and is stored in the hydraulic accumulator, and for next lifting weight, the potential energy that consumption of power is obtained partly obtains regeneration, to reduce load and the power that drives the hydraulic pressure main pump, energy recovery and reuse device of the present utility model reclaims and the regeneration efficiency height, the energy-saving and emission-reduction remarkable benefit.Simple and easy to do, little investment, the life-span is long.When newly making configuration or acquire during retrofitting of used machine all can, can be widely used in the large-scale engineering machineries such as excavation machinery, loading machine and crane gear.
Although in conjunction with the embodiments above-mentioned and accompanying drawing is described embodiment of the present utility model; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (10)
1. the energy recovery and reuse device of shear leg deadweight potential energy, described energy recovery and reuse device comprises:
Lift arm assembly and hydraulic system;
Described lift arm assembly comprises shear leg (10) and weight (7);
Described hydraulic system comprises:
The Hydraulic Main pumping system, this Hydraulic Main pumping system comprises hydraulic pressure main pump (2), pioneer pump (3) and the motor that drives hydraulic pressure main pump (2) and pioneer pump (3);
The oil cylinder (9) that is connected with shear leg (10), described oil cylinder comprises cylinder barrel, piston and piston rod, and piston rod one end links to each other with piston, and the other end links to each other with shear leg, and stretching out and retracting of piston rod drives shear leg rising or decline;
Hydraulic main valve (4), this hydraulic main valve are positioned between hydraulic pressure main pump (2) and the oil cylinder (9), the flow direction of control oil cylinder fluid;
It is characterized in that: described hydraulic system also comprises the energy recovery and reuse system, and this energy recovery and reuse system comprises the first multi-way valve (11), the second multi-way valve (5), the equipment that boosts (16) and accumulator (12);
The first multi-way valve (11) is connected between the entrance of the large chamber of oil cylinder and the equipment that boosts (16), accumulator (12) is connected to the outlet of the equipment of boosting (16), the second multi-way valve (5) connects between the outlet and the large chamber of oil cylinder of the equipment (16) that boosts, and is communicated with described accumulator (12) fluid;
When shear leg (10) descended, described energy recovery and reuse system can be transformed into high pressure oil with the low pressure oil that flows out in the large chamber of oil cylinder (9) and be stored in the accumulator (12); When shear leg (10) rose, described energy recovery and reuse system can be discharged into the high pressure oil in the accumulator (12) again in the large chamber of oil cylinder (9) and be reused.
2. energy recovery and reuse device according to claim 1 is characterized in that, by the described equipment that boosts (16) low pressure oil is transformed into high pressure oil.
3. energy recovery and reuse device according to claim 1, it is characterized in that: the described equipment that boosts (16) comprises oil hydraulic motor and oil hydraulic pump, the running shaft of oil hydraulic motor links to each other with the live axle of oil hydraulic pump, the fluid that flows out from the first multi-way valve (11) enters oil hydraulic motor, oil hydraulic motor rotarily drives hydraulic pump works, and hydraulic pump works is pumped into fluid in the accumulator (12).
4. energy recovery and reuse device according to claim 3, it is characterized in that: the discharge capacity of described oil hydraulic motor is greater than described hydraulic pressure pump delivery.
5. energy recovery and reuse device according to claim 3, the outlet of the described equipment that boosts (16) is provided with the 4th one-way valve (15), and this one-way valve allows hydraulic pressure to flow to accumulator (12) from the equipment of boosting, and prevents from flowing backwards.
6. energy recovery and reuse device according to claim 5 is characterized in that the outlet of described the 4th one-way valve (15) and the entrance of accumulator (12) are communicated with relief valve (13) fluid, and the delivery pressure of oil hydraulic pump is set by described relief valve.
7. energy recovery and reuse device according to claim 1, it is characterized in that: described hydraulic main valve (4) is the 3-position 4-way solenoid directional control valve, and described the first multi-way valve (11) and the second multi-way valve (5) are the 2/2-way solenoid directional control valve.
8. energy recovery and reuse device according to claim 7, it is characterized in that: described energy recovery and reuse device also comprises pilot handle (1), the oil outlet of pioneer pump is communicated with the pressure oil input end of pilot handle; Pilot handle comprises the first control wiring and the second control wiring, described the first control wiring links to each other with the control end of the first multi-way valve (11) and the left control end of hydraulic main valve (4), and described the second control wiring links to each other with right control end with the control end of the second multi-way valve (5).
9. energy recovery and reuse device according to claim 8, it is characterized in that, when the needs shear leg descends, pilot handle (1) is pulled the shear leg lowering position, described the first control wiring excites the control end of the first multi-way valve (11) and the left control end of hydraulic main valve (4), so that the first multi-way valve is in the enable possition, and so that hydraulic main valve (4) is in left position, the pressure oil of hydraulic pressure main pump (2) enters the loculus of oil cylinder (9), impel piston rod to descend, the large chamber of oil cylinder is communicated with the entrance of the equipment of boosting by the multi-way valve of opening; Be connected with the first one-way valve (14) between described the first multi-way valve (11) and the equipment that boosts (16), it be so that can flow to the entrance of the equipment of boosting from the hydraulic oil of the first multi-way valve, and prevents that fluid from flowing backwards; When the needs shear leg rises, pilot handle (1) is pulled the shear leg lifting position, described the second control wiring excites the control end of the second multi-way valve (11) and the right control end of hydraulic main valve (4), so that the second multi-way valve is in the enable possition, at this moment, the high pressure oil in the accumulator (12) enters the large chamber of oil cylinder by the second multi-way valve; Simultaneously, so that hydraulic main valve (4) is in right position, the pressure oil of hydraulic pressure main pump (2) enters the large chamber of oil cylinder (9), impels piston rod to rise; Be provided with the second one-way valve (8) between hydraulic main valve (4) and the large chamber of oil cylinder (9), its permission enters the large chamber of oil cylinder from the fluid of hydraulic main valve (4), and prevents from flowing backwards.
10. energy recovery and reuse device according to claim 8, it is characterized in that, between the second multi-way valve (5) and the second one-way valve (8), be provided with the 3rd one-way valve (6), it allows to enter the large chamber of oil cylinder from the fluid of the second multi-way valve (5) by the second one-way valve (8), and prevents from flowing backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487299 CN202833451U (en) | 2012-09-23 | 2012-09-23 | Energy recycling and reusing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220487299 CN202833451U (en) | 2012-09-23 | 2012-09-23 | Energy recycling and reusing device |
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| Publication Number | Publication Date |
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| CN202833451U true CN202833451U (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220487299 Withdrawn - After Issue CN202833451U (en) | 2012-09-23 | 2012-09-23 | Energy recycling and reusing device |
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| Country | Link |
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| CN (1) | CN202833451U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103256264A (en) * | 2013-05-10 | 2013-08-21 | 三一汽车起重机械有限公司 | Hydraulic system and engineering machinery with same |
| CN103671365A (en) * | 2012-09-23 | 2014-03-26 | 山重建机有限公司 | Energy recovery and reusing device |
| CN104613025A (en) * | 2015-01-23 | 2015-05-13 | 福建海源自动化机械股份有限公司 | Hydraulic system and recovery method of backpressure stroke energy of hydraulic actuators |
-
2012
- 2012-09-23 CN CN 201220487299 patent/CN202833451U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671365A (en) * | 2012-09-23 | 2014-03-26 | 山重建机有限公司 | Energy recovery and reusing device |
| CN103671365B (en) * | 2012-09-23 | 2015-12-02 | 山重建机有限公司 | A kind of energy recovery and reuse device |
| CN103256264A (en) * | 2013-05-10 | 2013-08-21 | 三一汽车起重机械有限公司 | Hydraulic system and engineering machinery with same |
| CN103256264B (en) * | 2013-05-10 | 2016-03-23 | 三一汽车起重机械有限公司 | A kind of hydraulic system and comprise the engineering machinery of this hydraulic system |
| CN104613025A (en) * | 2015-01-23 | 2015-05-13 | 福建海源自动化机械股份有限公司 | Hydraulic system and recovery method of backpressure stroke energy of hydraulic actuators |
| CN104613025B (en) * | 2015-01-23 | 2017-08-25 | 福建海源自动化机械股份有限公司 | A kind of hydraulic system and the method for hydraulic actuator back pressure stroke energy regenerating |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20151202 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |