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    • 3. 发明授权
    • Self-centering, torque-sensing joint assembly for a pallet truck power steering system
    • 自动对中,用于托盘车动力转向系统的转矩传感接头组件
    • US08504241B2
    • 2013-08-06
    • US12756732
    • 2010-04-08
    • Timothy T. HannaRichard M. DayJames M. McDonoughJeffrey A. Coppola
    • Timothy T. HannaRichard M. DayJames M. McDonoughJeffrey A. Coppola
    • B62D1/20
    • B62D1/14B62D5/0418B62D6/10B66F9/065B66F9/07568Y02T10/7258Y10T74/20
    • A steering mechanism includes a handle with a tiller arm coupled to the handle via a flexible joint allowing relative movement of the handle about the tiller arm. A handle centering mechanism forming part of the steering mechanism includes a first end fixedly secured to the handle and a second end extending into a channel of the tiller arm. The second end compresses bumpers disposed on opposing sides of the second end. The bumpers urge the handle toward a neutral position wherein when a force is applied to move the handle away from a home position relative to the tiller arm, one of the compressed bumpers of the pair of compressed bumpers is further compressed. When the force is removed, the handle is returned to the home position by action of the pair of compressed bumpers. Preferably, the steering mechanism includes a torque sensing arrangement having a sensor and a magnet. The sensor produces a signal based on movement of the handle relative to the tiller arm by sensing changes in the magnet field of the magnet proportional to the torque exerted on the handle regardless of the angle of the tiller arm.
    • 转向机构包括手柄,其具有通过柔性接头联接到手柄的舵杆,允许把手围绕耕作机臂相对移动。 形成转向机构的一部分的手柄对中机构包括固定在手柄上的第一端和延伸到舵手臂的通道中的第二端。 第二端压缩设置在第二端的相对侧上的保险杠。 缓冲器将把手推向中立位置,其中当施加力以相对于耕耘机臂移动手柄远离原始位置时,一对压缩缓冲器中的一个压缩缓冲器被进一步压缩。 当力消除时,手柄通过一对压缩缓冲器的作用返回到原位。 优选地,转向机构包括具有传感器和磁体的转矩感测装置。 传感器基于手柄相对于耕耘机臂的移动产生信号,通过感测与施加在手柄上的扭矩成比例的磁体磁场的变化,而不管耕耘机臂的角度如何。
    • 5. 发明授权
    • Service braking technique for material handling vehicles
    • 物料运输车辆的制动技术
    • US5340202A
    • 1994-08-23
    • US968777
    • 1992-10-30
    • Richard M. Day
    • Richard M. Day
    • B60L3/02B60L7/24B60T7/14
    • B60L7/006B60L3/02B60L7/24B60L2200/42B60L2240/30
    • The present invention features an improved technique for slowing and stopping a vehicle having an electric service motor, a mechanical parking brake, and a deadman's switch for engaging the mechanical brake. The method of the invention improves the efficiency of the braking procedure. The braking method initially determines if the deadman's switch is engaged. If it is, then the electric service motor is plugged at a predetermined minimum plug rate until the vehicle slows to a specified velocity. When the specified velocity is reached, the plugging operation is terminated. The mechanical brake is then engaged to slow the vehicle to a halt. When the vehicle comes to a halt, the parking brake remains engaged. The invention also improves safety by increasing the controlled rate of plugging to a maximum value in the event that the deadman's switch is off. Actual braking performance by plugging is compared with that of accepted rates of deceleration or plugging effort shown by armature current to verify operation of the service braking system. In the event of inadequate service braking, such braking is terminated and the mechanical brake is applied.
    • 本发明的特征在于一种用于减速和停止具有电动马达的车辆,机械驻车制动器和用于接合机械制动器的停车开关的改进技术。 本发明的方法提高了制动过程的效率。 制动方法最初确定是否采用了死人开关。 如果是,则电动维修马达以预定的最小塞速率被堵塞,直到车辆减速到指定的速度。 当达到规定的速度时,堵塞操作终止。 然后机械制动器被接合以使车辆减速停止。 当车辆停止时,驻车制动器保持接合。 本发明还通过在死人的开关关闭的情况下将控制的堵塞速率提高到最大值来提高安全性。 与通过电枢电流显示的接受减速度或堵塞力的速率比较,实际制动性能与运行制动系统的运行情况相比较。 在制动不力的情况下,停止制动,并施加机械制动。
    • 7. 发明授权
    • Self-centering, torque-sensing joint assembly for a pallet truck power steering system
    • 自动对中,用于托盘车动力转向系统的转矩传感接头组件
    • US08467937B2
    • 2013-06-18
    • US12728521
    • 2010-03-22
    • Timothy T. HannaRichard M. DayJames M. McDonough
    • Timothy T. HannaRichard M. DayJames M. McDonough
    • A01B69/00B62D6/00B62D11/00B62D12/00B62D51/04B62D1/14B62D5/06B62D7/00B63G8/20B63H25/04G05D1/00G06F17/00G06F19/00G06F7/00
    • B62D1/14B62B5/063B62D5/0418B62D6/10B66F9/0759
    • A power steering assist system for a hand-steered pallet truck includes a joint assembly having a pivot joint, handle biasing mechanism, and a torque sensing arrangement. The pivot joint includes a pair of needle bearings and pivot pin disposed within a pivot block that provides a flexible connection between a handle and a tiller arm. The handle biasing mechanism includes a cantilevered beam spring and two cam rollers that resists an operator steering force applied to the handle and further, centers the handle with respect to the tiller arm after the force is released. The torque sensing arrangement includes a magnet and a non-contact magnetoresistive (MR) sensor that measures movement of the handle relative to the tiller arm which is used to determine operator steering intent, i.e., the amount of steering force applied to the handle. The MR sensor provides accurate torque measurements regardless of the angle of the tiller arm. The steering assist system further includes a driving unit with a steerable drive wheel, and a servomotor. The amount of steering assist provided by the servomotor to the drive wheel is at least partially determined based on the measured operator steering intent.
    • 用于手动转向托盘车的动力转向辅助系统包括具有枢转接头,手柄偏压机构和扭矩感测装置的接头组件。 枢转接头包括设置在枢轴块内的一对滚针轴承和枢轴销,其提供手柄和舵柄臂之间的柔性连接。 手柄偏压机构包括悬臂梁弹簧和两个凸轮辊,其抵抗施加到手柄上的操作者转向力,并且在力被释放之后,手柄相对于耕耘机臂居中。 扭矩感测装置包括磁体和非接触磁阻(MR)传感器,其测量手柄相对于舵杆的运动,该运动用于确定操作者转向意图,即施加到手柄的转向力的量。 MR传感器提供精确的扭矩测量,而不管耕耘机臂的角度如何。 转向辅助系统还包括具有可转向驱动轮的驱动单元和伺服电动机。 伺服马达提供给驱动轮的转向辅助量至少部分地基于所测量的操作者转向意图来确定。
    • 10. 发明申请
    • MANAGEMENT SYSTEM EMBEDDED IN AN INDUSTRIAL VEHICLE
    • 管理系统嵌入在工业车辆
    • US20130338885A1
    • 2013-12-19
    • US13524610
    • 2012-06-15
    • John B. KirkRyan A. MagillTimothy E. DonahueRichard M. Day
    • John B. KirkRyan A. MagillTimothy E. DonahueRichard M. Day
    • G06F7/00H04B3/54
    • G06F17/00G07C5/008G07C5/0808
    • Operation of the industrial vehicle is managed by devices onboard the vehicle. One such management device includes a portable memory device issued to a person authorized to operate the vehicle. The vehicle control system, by reading data from the portable memory device, determines whether the person is permitted to operate that particular industrial vehicle and if so enables that operation. Another management device transmits a data signal through a power line on the industrial vehicle and uses a magnetically permeable wire bead in a unique manner to negate a short circuit effect that a component has on the data signal transmission. A further management device includes a module to interface a data acquisition module, designed to connect to a communication network of one type of industrial vehicle, for use with other vehicles.
    • 工业车辆的操作由车辆上的设备管理。 一种这样的管理装置包括发给授权操作车辆的人的便携式存储装置。 车辆控制系统通过从便携式存储装置读取数据来确定该人是否被允许操作该特定的工业车辆,如果是这样,则确定该操作。 另一个管理装置通过工业车辆上的电力线发送数据信号,并且以独特的方式使用导磁珠来消除部件对数据信号传输的短路效应。 另一管理装置包括用于与数据采集模块进行接口的模块,其被设计为连接到一种类型的工业车辆的通信网络,以与其他车辆一起使用。