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1. 发明授权

US4965847A Method and apparatus for detecting deviation of motor speed from frequency of power supply 失效
标题翻译：用于检测电机速度与电源频率的偏差的方法和装置
公开(公告)号：US4965847A
公开(公告)日：1990-10-23
申请号：US304527
申请日：1989-01-31
申请人： Keith O. Jurkowski , David C. Wycoff
发明人： Keith O. Jurkowski , David C. Wycoff
IPC分类号： H02P23/08
CPC分类号： H02P23/08 , Y10S388/903
摘要： An adjustable frequency motor drive system for a hoist is disclosed in which the frequency of the power supply to the motor can be selectively varied and the speed of the motor will follow the varying frequency at a slip speed relative to the frequency. The slip speed of the motor may not exceed a value beyond which the motor can control the hoist load. Accordingly, a frequency value based on the frequency of the power supply to the motor is selected as the frequency which is not to be exceeded by the motor speed expressed as a frequency. Signals representative of the actual motor speed and the selected frequency value are compared and, if the signal representative of the motor speed exceeds the signal representative of the frequency value which is not to be exceeded, an output signal is produced which may be used to apply a brake which stops and holds the motor and hoist and thereby maintains the load suspended. A motor speed deviation time period may also be provided and the hoist brake not applied to the motor until the time period is exceeded.
摘要翻译：公开了一种用于提升机的可变频电动机驱动系统，其中可以选择性地改变对电动机的供电频率，并且电动机的速度将以相对于频率的滑动速度跟随变化的频率。电机的滑差速度可能不超过电机可以控制起重负荷的值。因此，选择基于向电动机供电的频率的频率值作为表示为频率的电动机速度不超过的频率。比较代表实际电动机速度和所选频率值的信号，并且如果表示电动机速度的信号超过表示不超过的频率值的信号，则产生可用于应用的输出信号制动器停止并保持电动机和起重机，从而保持负载悬挂。还可以提供电动机转速偏差时间段，并且在超过时间段之前将起重机制动器不施加到电动机。

2. 发明授权

US5141183A Apparatus and method for determining one or more operating characteristics of a rail-mounted vehicle 失效
标题翻译：用于确定轨道安装车辆的一个或多个操作特性的装置和方法
公开(公告)号：US5141183A
公开(公告)日：1992-08-25
申请号：US632186
申请日：1990-12-21
申请人： Keith O. Jurkowski , Joseph L. Neidinger
发明人： Keith O. Jurkowski , Joseph L. Neidinger
IPC分类号： B25J5/02 , B61L3/22 , B61L23/00 , B66C13/46
CPC分类号： B61L25/025 , B25J5/02 , B61L23/002 , B61L3/22 , B66C13/46
摘要： An apparatus and method for determining one or more operating characteristics of a vehicle mounted to and movable on a rail. A magnetic strip is mounted to the rail, and is provided with alternating regions of flux and no-flux. The vehicle is provided with a magnetic sensor, which senses the alternating flux regions of the magnetic strip as the vehicle move on the rail and outputs a signal in response thereto. The signals output by the sensor are processed by a micro-controller, to determine the vehicle speed, location and/or displacement from a predetermined point. The system is advantageously employed in any number of applications, such as in factory automation systems, automated material storage and retrieval systems, overhead crane control systems or the like.
摘要翻译：一种用于确定安装到轨道上并可在轨道上移动的车辆的一个或多个操作特性的装置和方法。磁条被安装在轨道上，并且具有通量和无通量的交替区域。车辆设置有磁传感器，当车辆在轨道上移动时，该传感器感测磁条的交变通量区域，并响应于此而输出信号。由传感器输出的信号由微控制器处理，以确定车辆速度，位置和/或从预定点的位移。该系统有利地用于任何数量的应用中，例如在工厂自动化系统，自动化材料储存和检索系统，桥式起重机控制系统等中。

3. 发明授权

US4773807A High-speed automatic storage and retrieval system and apparatus therefor 失效
公开(公告)号：US4773807A
公开(公告)日：1988-09-27
申请号：US858061
申请日：1986-04-30
申请人： Charles R. Kroll , John Briggs , Keith O. Jurkowski , Eric C. Blom
发明人： Charles R. Kroll , John Briggs , Keith O. Jurkowski , Eric C. Blom
IPC分类号： B65G1/04 , B65G1/06
CPC分类号： B65G1/0485
摘要： An elevated track network guides self-propelled guided vehicles (with containers thereon) from an entry location where objects enter the system, to a storage zone defined by sets of compartmentalized storage racks wherein containers filled with objects are temporarily stored, and from thence to an exit location where retrieved objects leave the system. Each set of storage racks comprise four racks and two aisles, with two of the racks arranged back-to-back between the aisles and the other two racks on opposite sides of the aisles. Each storage rack comprises storage compartments arranged in horizontal rows and vertical columns. A track in the track network extends through and along an intermediate row in one of the back-to-back racks (pre-empting the compartments in that row). Each aisle accommodates a self-propelled aisle crane which services the racks on both sides of the aisle. Each crane comprises a chassis movable along its aisle to any column, a carriage vertically movable on the chassis to any row, and an extendable/retractable shuttle on the carriage for storing and retrieving objects in the compartments. The shuttle has a "home position" intermediate the opposite ends of its associated racks and intermediate the tops and bottoms of those racks. A guided vehicle is directed to an unloading/loading zone on the track, which zone is adjacent the shuttle's home position and whereat objects can be exchanged between the guided vehicle and the shuttle when the latter is extended. In one embodiment the loading zone has two regions, each accessible to only one shuttle. One region is on the track and the other region is on a short spur track switchably connected to the main track inside a portion of the adjacent row of the other of the two back-to-back racks. In a second embodiment the same loading zone is accessible to both shuttles. In a third embodiment two separate tracks and loading zones are provided, one for each aisle crane. Control means operate the guided vehicles, aisle cranes and shuttles in desired sequences.

4. 发明授权

US4568233A Storage and retrieval apparatus 失效
标题翻译：存储和检索设备
公开(公告)号：US4568233A
公开(公告)日：1986-02-04
申请号：US638202
申请日：1984-08-06
申请人： Dale A. Baker , Keith O. Jurkowski
发明人： Dale A. Baker , Keith O. Jurkowski
IPC分类号： B65G1/04 , B65G1/06
CPC分类号： B65G1/0464
摘要： The storage and retrieval apparatus of this invention comprises parallel tracks, each normally supporting numerous upright storage bins that are in close proximity to one another and to bins on laterally adjacent tracks. Each bin is open at its front and is mounted on wheels to roll rearward along its track. An overhead carrier lifts a desired bin off its track to a level above the other bins and carries it forward. A pusher near the front end of that track pushes rearward on the front bin, moving bins back to fill the space left by the lifted bin, which is then lowered into the space at the front of the track for loading or unloading, through its open front. On the top of each bin is an identifier plate distinctive to the bin. A sensor on the overhead carrier, connected with a computer, reads the identifier plates as the carriage moves rearward along a track and is thus able to find and lift a desired bin even though it is in a random position along the track. Gates at the front of the tracks are arranged to prevent personnel from getting in the way of bins being lowered.
摘要翻译：本发明的存储和取回装置包括平行的轨道，每个轨道通常支撑彼此非常接近并且横向相邻的轨道上的多个直立存储箱。每个仓在其前部开放，并安装在车轮上，沿其轨道向后滚动。架空运输工具将期望的箱子从其轨道上提升到高于另一个箱体的水平并将其向前运送。靠近该轨道的前端的推动器向前推动在前箱上移动箱，以便填充被提升的箱体留下的空间，然后将其下降到轨道前部的空间中以便装卸。面前。每个垃圾箱的顶部是与垃圾箱不同的标识牌。与计算机连接的顶架上的传感器随着滑架沿轨道向后移动而读取标识板，因此能够找到并提升所需的仓，即使它沿着轨道处于随机位置。轨道前部的门被安排，以防止人员进入下降的方式。

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