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公开(公告)号：US07980783B2
公开(公告)日：2011-07-19
申请号：US11615719
申请日：2006-12-22
CPC分类号： E04F21/248
摘要： A linear lost motion mechanism is located within a tubular handle of a machine, such as a concrete finishing machine. The linear lost motion mechanism includes a pitch block configured to selectively frictionally lock with the tubular handle or a component attached to the tubular handle using a biasing spring. The linear lost motion mechanism can perform a number of functions, such as controlling a blade pitch adjustment system of a concrete finishing machine.
摘要翻译： 线性的运动机构位于机器的管状把手内，例如混凝土整理机。 所述线性运动机构包括间距块，其被配置为使用偏置弹簧选择性地与所述管状手柄或附接到所述管状手柄的部件摩擦地锁定。 线性运动机构可以执行多种功能，例如控制混凝土整理机的叶片桨距调节系统。
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公开(公告)号：US20080152429A1
公开(公告)日：2008-06-26
申请号：US11615719
申请日：2006-12-22
IPC分类号： E01C19/22
CPC分类号： E04F21/248
摘要： A linear lost motion mechanism is located within a tubular handle of a machine, such as a concrete finishing machine. The linear lost motion mechanism includes a pitch block configured to selectively frictionally lock with the tubular handle or a component attached to the tubular handle using a biasing spring. The linear lost motion mechanism can perform a number of functions, such as controlling a blade pitch adjustment system of a concrete finishing machine.
摘要翻译： 线性的运动机构位于机器的管状把手内，例如混凝土整理机。 所述线性运动机构包括间距块，其被配置为使用偏置弹簧选择性地与所述管状手柄或附接到所述管状手柄的部件摩擦地锁定。 线性运动机构可以执行多种功能，例如控制混凝土整理机的叶片桨距调节系统。
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公开(公告)号：US5816740A
公开(公告)日：1998-10-06
申请号：US788819
申请日：1997-01-23
CPC分类号： E04F21/247
摘要： A self-propelled power trowel, for finishing a concrete surface, is provided, having a rigid frame adapted to be disposed over a concrete surface, an engine assembly, and at least a pair of rotor assemblies having rotatable trowel blades. The rotor assemblies are tiltable relative to the frame. Dual-action hydraulic cylinders are provided interconnected between the frame and the rotor assemblies for selectively tilting the rotors to provide steering control to the power trowel. The hydraulic fluid is delivered to the cylinders at variably selectable but constant pressures through the proportional pressure output control valves.
摘要翻译： 提供了用于完成混凝土表面的自推进动力t刀，其具有适于设置在混凝土表面上的刚性框架，发动机组件以及具有可旋转t刀叶片的至少一对转子组件。 转子组件相对于框架是可倾斜的。 双作用液压缸被提供在框架和转子组件之间互连，用于选择性地倾斜转子以向电力抹光机提供转向控制。 液压流体通过比例压力输出控制阀以可变的可选择但恒定的压力输送到气缸。
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公开(公告)号：US20100150653A1
公开(公告)日：2010-06-17
申请号：US12640759
申请日：2009-12-17
IPC分类号： E01C19/22
CPC分类号： E04F21/247 , E04F21/248
摘要： A blade pitch adjustment system may adjust the pitch of a plurality of blades. A height adjustment assembly adjusts a distance between a rotatable blade assembly and a thrust collar. Adjusting the distance between the assembly and the collar changes the pitch of the blades of the machine. Two or more blade pitch adjustment systems may be adjusted at the same time, at the same rate. For concurrent adjustment, systems are connected to a rotating member by tension cables. A linear actuator rotates the rotating member, changing the tension on the tension cables, actuating the systems to change the pitch of the blade assemblies. The pitch of the blade assemblies may have an offset or bias which may be adjusted for with a sliding member, which may be powered by a linear actuator. The system may be used with a concrete finishing machine.
摘要翻译： 叶片桨距调节系统可以调节多个叶片的间距。 高度调节组件调节可旋转刀片组件和推力套环之间的距离。 调整组件和套环之间的距离会改变机器刀片的间距。 可以以相同的速率同时调节两个或更多个叶片桨距调节系统。 为了并发调整，系统通过张力电缆连接到旋转构件。 线性致动器旋转旋转构件，改变张力电缆上的张力，致动系统以改变叶片组件的间距。 叶片组件的间距可以具有偏移或偏置，其可以通过可由线性致动器供电的滑动构件来调节。 该系统可以与混凝土整理机一起使用。
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公开(公告)号：US5899631A
公开(公告)日：1999-05-04
申请号：US45413
申请日：1998-03-19
CPC分类号： E04F21/248 , Y10T74/18864 , Y10T74/18896
摘要： A torque applying device for use with a steering mechanism for a riding power trowel, wherein the torque applying device is pivotally attached to a steering lever at the first end, and to the frame of the power trowel at a second end and in longitudinal alignment with the steering lever when the steering lever is in its at-rest position, and capable of arcuate rotation about its second end from a position where its longitudinal axis is in alignment with the steering lever to a position for imparting a torque force to the lever to assist rotation of the lever when the lever is rotated from its at-rest position for purposes of tilting a power trowel gear box.
摘要翻译： 一种与用于骑马动力t刀的转向机构一起使用的扭矩施加装置，其中扭矩施加装置在第一端处枢转地附接到转向杆，并且在第二端处与电动t刀的框架并且与第二端的纵向对准 所述转向杆当所述转向杆处于其静止位置时，并且能够围绕其第二端从其纵向轴线与所述转向杆对准的位置弧形旋转到用于向所述杠杆施加扭矩力的位置 当杠杆从其静止位置旋转以便倾斜电动el刀齿轮箱时，辅助杠杆的旋转。
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公开(公告)号：US06592290B2
公开(公告)日：2003-07-15
申请号：US09962884
申请日：2001-09-24
IPC分类号： E01C1922
CPC分类号： E04F21/247
摘要： A gearbox for a self-propelled power trowel for finishing a concrete surface having a rigid frame adapted to be disposed over a concrete surface, an engine assembly, at least one rotor assembly. The gearbox uses an input shaft having a first bevel gear, an intermediate shaft having a second bevel gear and a first helical gear, and an output shaft having a second helical gear to connect the engine assembly to the rotor assembly to accomplish a double reduction.
摘要翻译： 一种用于完成具有适于设置在混凝土表面上的刚性框架的混凝土表面的自推进动力t刀的齿轮箱，发动机组件，至少一个转子组件。 齿轮箱使用具有第一锥齿轮的输入轴，具有第二锥齿轮和第一斜齿轮的中间轴以及具有第二斜齿轮的输出轴，以将发动机组件连接到转子组件以实现双重减速。
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