CN202812144U - Support device of gear case and wind driven generator - Google Patents
Support device of gear case and wind driven generator Download PDFInfo
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- CN202812144U CN202812144U CN2012204249683U CN201220424968U CN202812144U CN 202812144 U CN202812144 U CN 202812144U CN 2012204249683 U CN2012204249683 U CN 2012204249683U CN 201220424968 U CN201220424968 U CN 201220424968U CN 202812144 U CN202812144 U CN 202812144U
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- lever beam
- gear
- support device
- torquer
- slide
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model provides a support device of a gear case and a wind driven generator. The support device of the gear case and the wind driven generator comprise a first connecting rod, a second connecting rod, a first lever beam, a second lever beam, a first driving torquer, a second driving torquer and a slide rest. The upper ends of the first connecting rod and the second connecting rod are used for being respectively connected with suspension loops on two sides of the outer wall of the gear case in a hinged mode. The lower end of the first connecting rod is connected with the outer end of the first lever beam in a hinged mode. The position close to the outer end of the first lever beam is connected with a first supporting seat in a hinged mode. The lower end of the second connecting rod is connected with the outer end of the second lever beam in a hinged mode. The position close to the outer end of the second lever beam is connected with a second supporting seat in a hinged mode. The first supporting seat and the second supporting seat are used for being connected with a mainframe of the wind driven generator. The inner end of the first lever beam is connected with the first driving torquer, and the inner end of the second lever beam is connected with the second driving torquer. The slide rest is provided with a vertical slide rail, the first driving torquer and the second driving torquer can slide up and down inside the vertical slide rail, and the lower end of the slide rest is used for being connected with the mainframe.
Description
Technical field
The utility model relates to wind generating technology, relates in particular to a kind of gear-box support device and wind-driven generator.
Background technique
Wind generating technology is just along the future development that increases single-machine capacity, and large-scale wind driven generator can reduce occupation of land, reduce be incorporated into the power networks cost and unit power construction cost, can improve wind energy utilization efficiency.Because the impeller weight of large-scale wind driven generator is very large, when wind vector, the gear train moment that impeller passes to gear-box and gear-box is larger, so that gear-box produces vertical and axial vibration, causes gear-box to produce easily overload and damage.
Existing gear-box support device comprises two moment arms and a torque axis, two moment arms are arranged on the both sides of gear-box, and upper end and the gear-box of moment arm are hinged, the other end of two moment arms is hinged with the two ends of torque axis respectively, when gear-box vibrated, moment arm was converted into the moment of torsion of equal and opposite in direction, opposite direction with the moment of gear-box, acted on the two ends of torque axis and cancelled out each other, to realize the displacement constraint of gear-box, reduce the vibration of gear-box.
In above-mentioned existing gear-box support device, the damping of moment arm and torque axis is fixed, can not regulate according to the concrete situation of concrete wind field and wind-powered electricity generation unit, and because the length of torque axis is larger, not only can produce and reverse hysteresis and resilience, and the unstability that deforms easily.
The model utility content
The utility model provides a kind of gear-box support device, and being used for solving prior art middle gear case support device can not regulate the damping damping according to actual conditions, and produces easily the technological deficiency of deformation instability.
A kind of gear-box support device that the utility model provides comprises head rod, the second connecting rod, the first lever beam, the second lever beam, first initiatively torquer, the second active torquer and slide; The upper end of described head rod and the second connecting rod is used for hinged with the hangers of gear-box outer wall both sides respectively, the outer end of the lower end of described head rod and described the first lever beam is hinged, described the first lever beam is hinged with the first bearing near the place, outer end, the outer end of the lower end of described the second connecting rod and described the second lever beam is hinged, described the second lever beam is hinged with the second bearing near outer end place, described the first bearing be connected bearing and be used for being connected with the mainframe of wind-driven generator;
Inner and described the first active torquer of described the first lever beam is connected, and inner and described the second active torquer of described the second lever beam is connected; Described slide has vertical slideway, and described the first active torquer and second initiatively torquer can slide up and down in described vertical slideway, and the lower end of described slide is used for being connected with described mainframe;
Described the first active torquer and second initiatively torquer includes horizontal arm, electromagnet and slide rheostat; The first horizontal arm is connected with described the first lever beam is inner, and the second horizontal arm is connected with described the second lever beam is inner; Described the first horizontal arm and the second horizontal arm are folded to be arranged in the described vertical slideway, described electromagnet is arranged on the two ends of described the first horizontal arm and the second horizontal arm, and the electromagnet on the electromagnet on described the first horizontal arm and described the second horizontal arm is corresponding up and down, described slide rheostat comprises the first slide rheostat and the second slide rheostat, described slide rheostat is arranged on the described slide, the sliding pointer of described the first slide rheostat is connected with described the first lever beam is inner, and the sliding pointer of described the second slide rheostat is connected with described the second lever beam is inner; Described electromagnet is connected with described slide rheostat.
Aforesaid gear-box support device, preferably, described gear-box support device also comprises the limit stoper of nodding, this limit stoper of nodding comprises first damper and second damper of nodding of nodding;
Described first nods, and damper and the first lever beam are inner is connected, and described second damper of nodding is connected with the second lever beam the inner.
Aforesaid gear-box support device, preferably, described first damper and second damper of nodding of nodding is hydraulic damper.
Aforesaid gear-box support device, preferably, the length of the outer end of described the first lever beam to described the first bearing hinged place is less than the length of described the first bearing hinged place to described first lever beam the inner;
The length of the outer end of described the second lever beam to described the second bearing hinged place is less than the length of described the second bearing hinged place to described second lever beam the inner.
Aforesaid gear-box support device, preferably, described slide comprises footstock and base, and described footstock is arranged on the top of described vertical slideway, and described base is arranged on the bottom of described vertical slideway.
Aforesaid gear-box support device, preferably, described first damper and second damper of nodding of nodding is spring, be provided with mounting hole on described footstock and the base, described spring one end is installed in the mounting hole of described footstock and base, the inner butt of the other end of described spring and described the first lever beam and the second lever beam.
Aforesaid gear-box support device, preferably, described horizontal arm has the guide portion that cooperates with described vertical slideway and the supporting portion of supporting described electromagnet.
Aforesaid gear-box support device, preferably, described head rod and the second connecting rod are hydraulic damper.
Aforesaid gear-box support device, preferably, described the first lever beam and the second lever beam are housing structure, described the first lever beam and the second lever beam inside are provided with gusset.
The utility model also provides a kind of wind-driven generator, comprise impeller, gear-box and mainframe, the main shaft of described impeller is connected with the input shaft of described gear-box, described gear-box is arranged in the described mainframe, it is characterized in that, this wind-driven generator is the described gear-box support device of above-mentioned model utility content also, the hangers of the upper end of the head rod of described gear-box support device and the second connecting rod and described gear-box outer wall both sides is hinged, and described the first bearing, the second bearing are connected the bottom and are connected with described mainframe with slide.
Gear-box support device and wind-driven generator that the utility model provides, can be by the first torquer and second torquer moment of rotation of regulating the first lever beam and the second lever beam initiatively initiatively, reduce the axial rotation of gear-box, the slide displacement of the first lever beam and the second lever beam is larger, then the active force between the electromagnet on the first active torquer and the second active torquer is larger, thereby can regulate the damping damping according to the size adjustment of gear-box moment of rotation, and the length of the first lever beam and the second lever beam is hinged with the first bearing and the second bearing respectively, can not produce and reverse hysteresis and resilience, be difficult for the unstability that deforms.
Description of drawings
The plan view of the gear-box support device that Fig. 1 provides for the utility model embodiment;
Fig. 2 is the partial enlarged drawing of gear-box support device shown in Figure 1;
The gear-box support device stereogram that Fig. 3 provides for the utility model embodiment.
Embodiment
With reference to figure 1 ~ 3, the plan view of the gear-box support device that Fig. 1 provides for the utility model embodiment; Fig. 2 is the partial enlarged drawing of gear-box support device shown in Figure 1; The gear-box support device stereogram that Fig. 3 provides for the utility model embodiment.
Shown in Fig. 1 ~ 3, the gear-box support device that present embodiment provides comprises head rod 1, the second connecting rod 2, the first lever beam 3, the second lever beam 4, first initiatively torquer 5, the second active torquer 6 and slide 7.The upper end of head rod 1 and the second connecting rod 2 is used for hinged with the hangers 101 of gear-box 10 outer wall both sides respectively, the outer end of the lower end of head rod 1 and the first lever beam 3 is hinged, the first lever beam 3 is hinged with the first bearing 31 near the place, outer end, the outer end of the lower end of the second connecting rod 2 and the second lever beam 4 is hinged, the second lever beam 4 is hinged with the second bearing 41 near the place, outer ends, the first bearing 31 be connected bearing 41 and be used for being connected with the mainframe 20 of wind-driven generator.
The first lever beam 3 the inners are connected with the first active torquer 5, the second lever beam 4 the inners are connected with the second active torquer 6, has vertical slideway 71 on the slide 7, the first active torquer 5 and second initiatively torquer 6 can vertically slide up and down in the slideway 71, and the lower end of slide 7 is used for being connected with mainframe 20.
The first active torquer 5 comprises the first horizontal arm 51, the first electromagnet 52 and the first slide rheostat 53; The first horizontal arm 51 and 3 inner connections of the first lever beam, particularly, the first horizontal arm 51 can be located in the through hole of the first lever beam 3 the inners.The second active torquer 6 comprises the second horizontal arm 61, the second electromagnet 62 and the second slide rheostat 63, the second horizontal arms 61 and 4 inner connections of the second lever beam, and particularly, the first horizontal arm 61 can be located in the through hole of the first lever beam 4 the inners.
The first horizontal arm 51 and the second horizontal arm 61 folded being arranged in the vertical slideway 71, the first electromagnet 52 is arranged on the two ends of the first horizontal arm 51, the second electromagnet 62 is arranged on the two ends of the second horizontal arm 61, and the first electromagnet 52 is corresponding with the second electromagnet 62 upper-lower positions, the first slide rheostat 53 and the second slide rheostat 63 are on slide 7, the sliding pointer of the first slide rheostat 53 and 3 inner connections of the first lever beam, the sliding pointer of the second slide rheostat 63 and 4 inner connections of the second lever beam; The first electromagnet 52 is connected with the first slide rheostat 53, and the second electromagnet 62 is connected with the second slide rheostat 63.
In the present embodiment, the length of outer end to the first bearing 31 hinged places of the first lever beam 3 is less than the length of lever beam 3 the inners, the first bearing 31 hinged place to the first.The length of outer end to the second bearing 41 hinged places of the second lever beam 4 is less than the length of lever beam 4 the inners, the second bearing 41 hinged place to the second.Because the arm of force length of the first lever beam 3 and the second lever beam 4 and gear-box 10, less than with the first torquer 5 and second arm of force length of torquer 6 initiatively initiatively, thereby first initiatively torquer 5 and second initiatively torquer 6 can offset the moment that gear-box 10 pass to the first lever beam 3 and the second lever beam 4 with less power, can improve the cushioning ability of gear-box support device.
Particularly, head rod 1 and the second connecting rod 2 can be the various structures form, be preferably hydraulic damper, adopt hydraulic damper can improve the cushioning ability of head rod 1 and the second connecting rod 2, head rod 1 and the second connecting rod 2 also can be rigid connecting bar structure certainly.
The first lever beam 3 and the second lever beam 4 can be housing structure, and the first lever beam 3 and the second lever beam 4 inside are provided with gusset, adopt housing structure can alleviate the weight of the first lever beam 3 and the second lever beam 4, and then alleviate the weight of gear-box support device.Certainly, the first lever beam 3 and the second lever beam 4 also can entity structures, and the profile of the first lever beam 3 and the second lever beam 4 can be according to the practical situations specific design.
Particularly, the first horizontal arm 51 has the first guide portion 511 that cooperates with vertical slideway 71 and the first supporting portion 512 of supporting the first electromagnet 52.The second horizontal arm 61 has the second guide portion 611 that cooperates with vertical slideway 71 and the second supporting portion 612 of supporting the second electromagnet 62.
The first electromagnet 52 comprises two electromagnet, is respectively the two ends that are arranged on the first horizontal arm 51, and same, the second electromagnet 62 also comprises two electromagnet, is separately positioned on the two ends of the second horizontal arm 61.The first guide portion 511 is two rectangular shaped slider, wind is not arranged in the vertical slideway 71, the first guide portion 511 can guide the first horizontal arm 51 to drive the first lever beam 3 and vertically slide up and down in the slideway 71, equally, the second guide portion 611 is two rectangular shaped slider, wind is not arranged in the vertical slideway 71, and the second guide portion 611 can guide the second horizontal arm 61 to drive the second lever beam 4 and vertically slide up and down in the slideway 71.
The below specifies working principle and the process of the gear-box support device that above-described embodiment provides:
In actual applications, the upper end of head rod 1 and the second connecting rod 2 is hinged with the hangers 101 at gear-box 10 two ends respectively, and the first bearing 31, the second bearing 41 are connected the bottom and are connected with mainframe 20 inwalls with slide.
When gear-box 10 was static, the first lever beam 3 and the second lever beam 4 were in state of equilibrium, and the resistance value of the first slide rheostat 53 and the second slide rheostat 54 is maximum.
When gear-box 10 rotates counterclockwise, head rod 1 moves downward, the outer end that drives the first lever beam 3 moves downward, by the fulcrum of the first bearing 31 as the first lever beam 3, so that the first lever beam 3 inner first active torquers 5 that drive upwards slide in the vertical slideway 71 of slide 7; Simultaneously, the second connecting rod 2 moves upward, the outer end that drives the second lever beam 4 moves upward, by the fulcrum of the second bearing 41 as the second lever beam 4, so that the second lever beam 4 inner second active torquers 6 that drive are at the vertical slideway 71 interior down slidings of slide 7; The sliding pointer that the first lever beam 3 drives the first slide rheostat 53 slides, reduce the resistance value of the first slide rheostat 53, and then increase the electric current of the first electromagnet 52, the sliding pointer that the second lever beam 4 drives the second slide rheostat 53 slides, reduce the resistance value of the second slide rheostat 63, and then increase the electric current of the second electromagnet 62, increase the active force between the first electromagnet 52 and the second electromagnet 62, offsetting the moment of the first lever beam 3 and the second lever beam 4, and then can retrain the rotation of gear-box 10.
When gear-box 10 clockwise rotates, the first lever beam 3 inner first active torquers 5 that drive are at the vertical slideway 71 interior down slidings of slide 7, the second lever beam 4 inner second active torquers 6 that drive upwards slide in the vertical slideway 71 of slide 7, the sliding pointer that the first lever beam 3 drives the first slide rheostat 53 slides, reduce the resistance value of the first slide rheostat 53, and then increase the electric current of the first electromagnet 52, the sliding pointer that the second lever beam 4 drives the second slide rheostat 53 slides, reduce the resistance value of the second slide rheostat 63, and then increase the electric current of the second electromagnet 62, increase the active force between the first electromagnet 52 and the second electromagnet 62, offsetting the moment of the first lever beam 3 and the second lever beam 4, and then can retrain the rotation of gear-box 10.
The gear-box support device that present embodiment provides, can be by the moment of rotation of the first active torquer 5 and the second active torquer 6 adjusting the first lever beams 3 and the second lever beam 4, the slide displacement of the first lever beam 3 and the second lever beam 4 is larger, then the active force between the first electromagnet 52 and the second electromagnet 62 is larger, thereby can regulate the damping damping according to the size adjustment of gear-box 10 moment of rotation, and the first lever beam 3 and the second lever beam 4 are hinged with the first bearing 31 and the second bearing 41 respectively, can not produce and reverse hysteresis and resilience, be difficult for the unstability that deforms.
On the basis of the gear-box support device technological scheme that above-described embodiment provides, the gear-box support device also comprises the limit stoper of nodding, this limit stoper of nodding comprises first damper and second damper of nodding of nodding, first nods damper and 3 inner connections of the first lever beam, and second nods damper and 4 inner connections of the second lever beam.Particularly, first damper and second damper of nodding of nodding is hydraulic damper.
When nodding occured for gear-box 10, gear-box 10 reduced the nodding of gear-box 10 by first damper and second damper of nodding of nodding.
The gear-box support device that present embodiment provides is provided with the gear-box limit stoper of nodding, and by first damper and second dampers limit gear-box 10 axial vibrations of nodding of nodding, improves the stability of gear-box 10.
The utility model also embodiment also provides a kind of wind-driven generator, comprise impeller (not shown), gear-box 10 and mainframe 20, the main shaft of impeller is connected with the input shaft of gear-box 10, gear-box 10 is arranged in the mainframe 20, this wind-driven generator also comprises the gear-box support device that claim the utility model above-described embodiment provides, the hangers 101 of the head rod 1 of gear-box support device and the upper end of the second connecting rod 2 and gear-box 10 outer wall both sides is hinged, and the bottom that the first bearing 31, the second bearing 32 are connected with slide is connected with mainframe 20.
The gear-box support device that present embodiment provides, can be by the moment of rotation of the first active torquer 5 and the second active torquer 6 adjusting the first lever beams 3 and the second lever beam 4, the slide displacement of the first lever beam 3 and the second lever beam 4 is larger, then the active force between the first electromagnet 52 and the second electromagnet 62 is larger, thereby can regulate the damping damping according to the size adjustment of gear-box 10 moment of rotation, and the first lever beam 3 and the second lever beam 4 are hinged with the first bearing 31 and the second bearing 41 respectively, can not produce and reverse hysteresis and resilience, be difficult for the unstability that deforms.
It should be noted that at last: above each embodiment is not intended to limit only in order to the technical solution of the utility model to be described; Although with reference to aforementioned each embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technological scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characteristics wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of each embodiment's technological scheme of the utility model.
Claims (10)
1. a gear-box support device is characterized in that, comprises head rod, the second connecting rod, the first lever beam, the second lever beam, first initiatively torquer, the second active torquer and slide; The upper end of described head rod and the second connecting rod is used for hinged with the hangers of gear-box outer wall both sides respectively, the outer end of the lower end of described head rod and described the first lever beam is hinged, described the first lever beam is hinged with the first bearing near the place, outer end, the outer end of the lower end of described the second connecting rod and described the second lever beam is hinged, described the second lever beam is hinged with the second bearing near outer end place, described the first bearing be connected bearing and be used for being connected with the mainframe of wind-driven generator;
Inner and described the first active torquer of described the first lever beam is connected, and inner and described the second active torquer of described the second lever beam is connected; Described slide has vertical slideway, and described the first active torquer and second initiatively torquer can slide up and down in described vertical slideway, and the lower end of described slide is used for being connected with described mainframe;
Described the first active torquer and second initiatively torquer includes horizontal arm, electromagnet and slide rheostat; The first horizontal arm is connected with described the first lever beam is inner, and the second horizontal arm is connected with described the second lever beam is inner; Described the first horizontal arm and the second horizontal arm are folded to be arranged in the described vertical slideway, described electromagnet is arranged on the two ends of described the first horizontal arm and the second horizontal arm, and the electromagnet on the electromagnet on described the first horizontal arm and described the second horizontal arm is corresponding up and down, described slide rheostat comprises the first slide rheostat and the second slide rheostat, described slide rheostat is arranged on the described slide, the sliding pointer of described the first slide rheostat is connected with described the first lever beam is inner, and the sliding pointer of described the second slide rheostat is connected with described the second lever beam is inner; Described electromagnet is connected with described slide rheostat.
2. gear-box support device according to claim 1 is characterized in that, described gear-box support device also comprises the limit stoper of nodding, and this limit stoper of nodding comprises first damper and second damper of nodding of nodding;
Described first nods, and damper and the first lever beam are inner is connected, and described second damper of nodding is connected with the second lever beam the inner.
3. gear-box support device according to claim 2 is characterized in that, described first damper and second damper of nodding of nodding is hydraulic damper.
4. each described gear-box support device is characterized in that according to claim 1 ~ 3, and the length of the outer end of described the first lever beam to described the first bearing hinged place is less than the length of described the first bearing hinged place to described first lever beam the inner;
The length of the outer end of described the second lever beam to described the second bearing hinged place is less than the length of described the second bearing hinged place to described second lever beam the inner.
5. gear-box support device according to claim 2 is characterized in that, described slide comprises footstock and base, and described footstock is arranged on the top of described vertical slideway, and described base is arranged on the bottom of described vertical slideway.
6. gear-box support device according to claim 5, it is characterized in that, described first damper and second damper of nodding of nodding is spring, be provided with mounting hole on described footstock and the base, described spring one end is installed in the mounting hole of described footstock and base, the inner butt of the other end of described spring and described the first lever beam and the second lever beam.
7. each described gear-box support device is characterized in that according to claim 1 ~ 3, and described horizontal arm has the guide portion that cooperates with described vertical slideway and the supporting portion of supporting described electromagnet.
8. each described gear-box support device is characterized in that according to claim 1 ~ 3, and described head rod and the second connecting rod are hydraulic damper.
9. each described gear-box support device is characterized in that according to claim 1 ~ 3, and described the first lever beam and the second lever beam are housing structure, and described the first lever beam and the second lever beam inside are provided with gusset.
10. wind-driven generator, comprise impeller, gear-box and mainframe, the main shaft of described impeller is connected with the input shaft of described gear-box, described gear-box is arranged in the described mainframe, it is characterized in that, this wind-driven generator also comprises each described gear-box support device of claim 1 ~ 9, the hangers of the upper end of the head rod of described gear-box support device and the second connecting rod and described gear-box outer wall both sides is hinged, and described the first bearing, the second bearing are connected the bottom and are connected with described mainframe with slide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204249683U CN202812144U (en) | 2012-08-24 | 2012-08-24 | Support device of gear case and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204249683U CN202812144U (en) | 2012-08-24 | 2012-08-24 | Support device of gear case and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812144U true CN202812144U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204249683U Expired - Lifetime CN202812144U (en) | 2012-08-24 | 2012-08-24 | Support device of gear case and wind driven generator |
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| Country | Link |
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| CN (1) | CN202812144U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931067A (en) * | 2015-11-26 | 2017-07-07 | 歌美飒创新技术公司 | For the torque absorber of wind turbine gearbox |
| CN107830064A (en) * | 2017-10-19 | 2018-03-23 | 刘和来 | A kind of aero-engine bearing supporting device |
| CN108631495A (en) * | 2018-04-18 | 2018-10-09 | 云南靖强科技有限公司 | New energy Magnetomotive generator group |
-
2012
- 2012-08-24 CN CN2012204249683U patent/CN202812144U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931067A (en) * | 2015-11-26 | 2017-07-07 | 歌美飒创新技术公司 | For the torque absorber of wind turbine gearbox |
| CN107830064A (en) * | 2017-10-19 | 2018-03-23 | 刘和来 | A kind of aero-engine bearing supporting device |
| CN107830064B (en) * | 2017-10-19 | 2019-07-12 | 刘和来 | A kind of aero-engine bearing supporting device |
| CN108631495A (en) * | 2018-04-18 | 2018-10-09 | 云南靖强科技有限公司 | New energy Magnetomotive generator group |
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Granted publication date: 20130320 |