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    • 2. 发明授权
    • High efficient and high power plane centric gear unit
    • 高效高功率平面中心减速器
    • US09022896B2
    • 2015-05-05
    • US13603449
    • 2012-09-05
    • Zupeng FangDan FangFang FangYafeng Zhao
    • Zupeng FangDan FangFang FangYafeng Zhao
    • F16H57/08F16H1/32
    • F16H1/32
    • A plane centric gear unit has a circumferentially floating ring gear 1. Both ends of the ring gear 1 are respectively fixed with cloth boards 3 equipped with hollow shaft sleeves 4; the reaction forces of the ring gear 1 and external gear 2 are equal and in opposite directions, and act on inner ring bearings 7 of the hollow shaft sleeves 4 on the same straight line; the outer ring bearings 8 of the hollow shaft sleeves 4 are unloaded, therefore the sum of the bearing reaction forces is reduced, the total transmission efficiency and power reaches above 97% and tens of thousands KW grade, the noises are lower, the gear surface contact pressure is about 1/10 of the external mesh pair, the gear surface contact life is increased by 1000 times than the external mesh pair, and the total weight is reduced by 2˜3 times.
    • 平面中心减速器具有周向浮动的环形齿轮1.齿圈1的两端分别固定有装有中空轴套4的布板3; 环形齿轮1和外齿轮2的反作用力相等且相反方向,并且作用在同一直线上的中空轴套4的内圈轴承7上; 空心轴套4的外圈​​轴承8被卸载,因此轴承反作用力的总和减小,总传动效率和功率达到97%以上,几万KW级,噪声较低,齿轮面 接触压力约为外啮合对的1/10,齿轮表面接触寿命比外啮合对增加1000倍,总重量减少2〜3倍。
    • 5. 发明授权
    • 2,2′,6,6′-tetrasubstituted aminophosphine ligand and its synthesis method
    • 2,2',6,6'-四取代氨基膦配体及其合成方法
    • US08729303B2
    • 2014-05-20
    • US12377000
    • 2007-08-10
    • Wanbin ZhangFang XieFang Fang
    • Wanbin ZhangFang XieFang Fang
    • C07F9/02
    • C07F9/46
    • The present invention relates to a 2,2′,6,6′-tetrasubstituted aminophosphine ligand and its synthesis method. The structure of the ligand is shown as below. Its synthesis method comprises: Step (1) coupling 2,6-dinitrochlorobenzene as the starting material to obtain 2,2′,6,6′-tetranitrobiphenyl; Step (2): hydrogenating the 2,2′,6,6′-tetranitrobiphenyl with Pd/C to obtain 2,2′,6,6′-tetraminobiphenyl; Step (3): reacting the 2,2′,6,6′-tetraminobiphenyl with a phosphine halide to obtain the 2,2′,6,6′-tetrasubstituted aminophosphine ligand. The ligand of the present invention is an achiral compound, and its preparation method is simple. The ligand can be converted to a chiral bimetallic catalyst with single configuration eventually through introduction of external chirality. Moreover, the ligand can be used in various asymmetric reaction catalyzed by metals with high reactivity and stereoselectivity.
    • 本发明涉及2,2',6,6'-四取代氨基膦配体及其合成方法。 配体的结构如下所示。 其合成方法包括:步骤(1)以2,6-二硝基氯苯为原料,得到2,2',6,6'-四硝基联苯; 步骤(2):用Pd / C氢化2,2',6,6'-四硝基二苯并得到2,2',6,6'-四氨基联苯; 步骤(3):使2,2',6,6'-四磺酰联苯与卤化膦反应,得到2,2',6,6'-四取代氨基膦配体。 本发明的配体是非手性化合物,其制备方法简单。 最终可以通过引入外部手性将配体转化为具有单一配置的手性双金属催化剂。 此外,配体可用于由具有高反应性和立体选择性的金属催化的各种不对称反应中。