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    • 4. 发明授权
    • Cotton drafting frame
    • 棉花起草框架
    • US5438733A
    • 1995-08-08
    • US987148
    • 1992-12-08
    • Paul MelcherJorg Hummel
    • Paul MelcherJorg Hummel
    • D01H1/22D01H5/22D01H5/74D01H13/18D01H5/18
    • D01H13/187D01H1/22
    • A drafting frame includes first and second drafting roll pairs being spaced from one another consecutively in the direction of sliver advance and each being formed of two cooperating drafting rolls; first and second drive motors; a first torque transmitting arrangement connected to the first drive motor and to one of the drafting rolls of the first drafting roll pair for driving the first drafting roll pair in a forward sense for feeding the sliver in the direction of advance; a second torque transmitting arrangement connected to the second drive motor and to one of the drafting rolls of the second drafting roll pair for driving the second drafting roll pair in a forward sense for feeding the sliver in the direction of advance; an electronic regulating arrangement for regulating an rpm of at least one of the two drive motors for equalizing irregularities of the sliver; a first freewheel backstop for preventing a rotation of the first drafting roll pair in a reverse sense; and a second freewheel backstop for preventing a rotation of the second drafting roll pair in a reverse sense.
    • 牵伸架包括第一牵伸辊对和第二牵伸辊对,沿着纱条推进的方向相互间隔开,并且每个由两个配合的牵伸辊构成; 第一和第二驱动电机; 第一扭矩传递装置,其连接到第一驱动马达和第一牵伸辊对中的一个牵伸辊,用于沿前进方向驱动第一牵伸辊对,以沿前进方向进给条; 第二扭矩传递装置,其连接到第二驱动马达和第二牵伸辊对的牵引辊之一,用于沿前进方向驱动第二牵伸辊对,以沿前进方向进给条; 电子调节装置,用于调节两个驱动电机中的至少一个的转速,以均衡所述条子的不规则性; 用于防止第一牵伸辊对以相反方向的旋转的第一自由停车; 以及用于防止第二牵伸辊对以相反方向旋转的第二自由停车挡块。