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    • 1. 发明授权
    • Conveying device with self steering powered caster
    • 带自动转向动力脚轮的输送装置
    • US5590605A
    • 1997-01-07
    • US560828
    • 1995-11-20
    • Kenneth D. SalterDaniel A. ArmstrongTed W. Fredrick
    • Kenneth D. SalterDaniel A. ArmstrongTed W. Fredrick
    • A63G25/00B62D1/26B61F13/00B61B12/02
    • A63G25/00B62D1/26
    • A transport system for moving along a track on a support surface. The system includes a body, a guide system and a powered self-steering caster assembly. The guide system cooperates with the track to apply lateral forces to the body to guide it along a predetermined path when a propulsive force is applied to the body. The powered self-steering caster assembly has a pivot joint and a wheel driven by a motor. The wheel has a center of rotation and is rotatably mounted to engage the support surface and roll in a forward direction. The pivot joint is mounted to the body to allow the wheel to pivot about a predetermined axis intersecting the support surface forward of the engagement between the wheel and the support surface. The wheel drives the body and pivots in response to frictional side slip forces between the wheel and the support surface without restraint from a steering linkage. An optional viscous damper mounted between the body and the caster assembly allows operation of the transport system at speeds in excess of those available without such a damper.
    • 用于沿着支撑表面上的轨道移动的运输系统。 该系统包括主体,引导系统和动力自动转向脚轮组件。 当推进力施加到身体时,引导系统与轨道配合以向身体施加横向力以将其沿预定路径引导。 动力自动转向脚轮组件具有枢转接头和由电动机驱动的轮子。 轮具有旋转中心并且可旋转地安装以接合支撑表面并向前滚动。 枢转接头被安装到主体,以允许车轮围绕与车轮和支撑表面之间的接合向前与支撑表面相交的预定轴线枢转。 轮子驱动身体并且响应于车轮和支撑表面之间的摩擦侧滑力而枢转,而不受转向连杆的限制。 安装在主体和脚轮组件之间的可选粘性阻尼器允许运输系统的速度超过可用的速度,而没有这种阻尼器。
    • 3. 发明授权
    • Platen drive unit
    • 压板驱动单元
    • US5402730A
    • 1995-04-04
    • US105845
    • 1993-08-11
    • Kenneth D. SalterDaniel A. Armstrong
    • Kenneth D. SalterDaniel A. Armstrong
    • B61B13/12B61B13/00
    • B61B13/127
    • The preferred embodiment is a platen drive unit that propels the platens of vehicles moving along a track. The platen drive unit may be readily used at any portion of the track, since it acts as a castor about a kingpin assembly, thereby substantially reducing the effects of roller scrub in curved track portions. A self energizing structure balances a dual-pivot arrangement of frames, such that the drive roller of the unit is balanced to intersect the conveyance plane without imposing a "bump" or lurch upon a vehicle that first engages the drive roller. Additionally, the drive roller is preferably a dual-rate tire which features a compliant range, within which the tire is readily deformed, but which continues to drive the platen with a large normal force. Beyond the compliant range, the tire is not compliant to deformation. The dual-rate tire may be created by constricting the circumference and filling the deformed tire with a urethane filler, which is allowed to cure. The constricting influence is removed, and the tire tread punctured to allow air to fill an ullage between the filler and the tread, creating the compliant region.
    • 优选实施例是一个压板驱动单元,其推动沿着轨道移动的车辆的平台。 压板驱动单元可以容易地用于轨道的任何部分,因为它可以用作围绕中心销组件的脚轮,从而大大减少了在曲线轨道部分中的辊磨擦的影响。 自动启动结构平衡了双重枢转的框架布置,使得单元的驱动辊平衡以与输送平面相交而不施加“凸起”,或者碰到首先接合驱动辊的车辆。 此外,驱动辊优选地是具有柔顺范围的双速轮胎,其中轮胎容易变形,但是以大的法向力继续驱动压板。 超过适用范围,轮胎不符合变形。 双速轮胎可以通过使氨基甲酸酯填料容易固化来收缩周长并填充变形的轮胎而产生。 收缩的影响被消除,并且轮胎胎面被刺穿以允许空气填充填充物和胎面之间的空隙,从而产生柔顺区域。