[특허]Automatic load positioning for a conveyor cart

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-007/16
출원번호	US-0241193 (2002-09-11)
발명자 / 주소	Shupp, Craig L. English, James A. Robertson, Timothy D.
출원인 / 주소	Paragon Technologies, Inc.
대리인 / 주소	Drinker Biddle &
인용정보	피인용 횟수 : 27 인용 특허 : 27

초록 ▼

A system for adjusting the position of a load supported on a conveyor cart includes a driven lift mechanism for controlling height and a turntable for controlling rotational orientation. The cart may, alternately or in addition to the above mechanisms, include a gimbal mechanism for rotational adjus

A system for adjusting the position of a load supported on a conveyor cart includes a driven lift mechanism for controlling height and a turntable for controlling rotational orientation. The cart may, alternately or in addition to the above mechanisms, include a gimbal mechanism for rotational adjustment about multiple axes. A processor on the cart provides actuation and control of the mechanisms. An ID card reader on the cart senses ID tags for determining when the cart is adjacent particular locations. Data representing desired load position at the locations is stored either in a memory device or by the ID tag for relay to the processor on the cart via the ID tag reader. A system level controller provides a centralized storage location for desired load position data for communication to a plurality of conveyor carts through a communication link that includes radio frequency modems.

대표청구항 ▼

1. A conveyor system comprising:at least one conveyor cart having a platform for supporting a load and a base, the cart adapted to be conveyed along a path within a facility; at least one driven adjustment mechanism for adjusting the position of the supported load with respect to the base; a control

1. A conveyor system comprising:at least one conveyor cart having a platform for supporting a load and a base, the cart adapted to be conveyed along a path within a facility; at least one driven adjustment mechanism for adjusting the position of the supported load with respect to the base; a control processor located on-board the cart for actuating and controlling the at least one position adjusting mechanism; means for determining proximity of the cart to at least one location within the facility; and means for storing data representing desired load position adjustment for each of the locations within the facility, the controller actuating and controlling the adjustment mechanism according to the position data stored for a particular location when proximity of the cart to the location is determined. 2. The conveyor system according to claim 1, wherein the means for determining proximity comprises an ID tag reader carried on-board the cart, the ID tag reader capable of sensing an ID tag associated with each of the locations within the facility.3. The conveyor system according to claim 2, wherein each of the ID tags is mounted adjacent one of the locations.4. The conveyor system according to claim 2, wherein each of the ID tags is programmable and wherein the data representing desired position adjustment for the associated location is programmed into the ID tag for relay to the on-board processor via the ID tag reader when the ID tag is sensed by the ID tag reader.5. The conveyor system according to claim 2, wherein the on-board processor includes a memory storage device the storage device containing desired position adjustment data for each of the locations, and wherein the processor is adapted to retrieve specific position adjustment data from the storage device which data is associated with the specific ID tag read by the ID tag reader.6. The conveyor system according to claim 1, further comprising a system-level controller, the desired position adjustment data for each of the locations being stored in the system level controller, the conveyor system further comprising a communication means linking the system-level controller and each of the carts for transmission of the desired position adjustment data from the system-level controller to the on-board processor for the cart.7. The conveyor system according to claim 6, wherein the communication means comprises a first radio frequency modem connected to the system level controller and a second radio frequency modem connected to the on-board processor for each of the carts.8. The conveyor system according to claim 1, wherein the at least one driven mechanism includes a lift mechanism for adjustment of the height of the load-supporting platform.9. The conveyor system according to claim 1, wherein the at least one driven mechanism includes an adjustment mechanism supported by the platform for adjustment of the rotational orientation of a supported load.10. The conveyor system according to claim 9, wherein the at least one driven mechanism is capable of adjusting the orientation of a supported load with respect to a plurality of axes.11. The conveyor system according to claim 1 further comprising a manual input device for permitting manual adjustment of the platform relative to the base.12. The conveyor system according to claim 11 wherein the manual input device is mounted on the cart.13. A control system for adjusting a load supported on a conveyor cart platform, the system comprising:a driven lift mechanism connected to the conveyor cart platform for adjusting the height of the platform; a driven rotational adjustment mechanism supported by the platform for adjusting the rotational orientation of a load supported on the platform; and an on-board processor operably connected to each of the mechanisms for actuation and control of the mechanisms by the processor. 14. The control system according to claim 13, further comprising an ID tag reader carried by the conveyor cart for sensing an ID tag associated with each location along a path.15. The control system according to claim 14, wherein the on-board processor comprises a memory storage device for storage of at least one desired height and at least one desired rotational orientation for each location.16. The control system according to claim 13, further comprising a system level controller capable of storing data representing desired height and rotational orientation for a plurality of locations, the system further comprising communication means linking the system level controller with the control processor of the conveyor cart for transmission of the stored data.17. The control system according to claim 16, wherein the communication means comprises a first radio frequency modem connected to the system level controller and a second radio frequency modem carried by the conveyor cart and connected to the control processor.18. A method of adjusting a load carried by a conveyor cart capable of being directed along a path adjacent at least one location in a facility, the method comprising the steps of:providing at least one driven mechanism for adjusting the position the load with respect to the cart; providing a sensor capable of determining proximity of the cart to the at least one location; providing a control processor connected to the adjustment mechanism for actuating and controlling the mechanism; directing the conveyor cart along the path; determining where the cart is relative to the at least one location; actuating the adjusting mechanism when the cart is at a specific location with respect to the at least one location. 19. The method according the claim 18, wherein the at least one driven mechanism comprises a lift mechanism for adjusting the height of a supported load and a rotational adjustment mechanism for adjusting the rotational orientation of a supported load and wherein the step of actuating provides for simultaneous actuation of both of the mechanisms.20. The method according to claim 18, further comprising the steps of:providing a system level controller capable of storing data representing desired load position for the locations; providing a communications means linking the system level controller to the control processor of the conveyor cart; notifying the system level controller via the communication link when the sensor determines that the cart is adjacent the at least one location; retrieving the desired load position for the sensed location stored by the system level controller; and relaying the desired load position for the sensed location to the control processor of the conveyor cart via the communication link. 21. A cart for a conveyor system comprising:a platform; a base having a plurality of wheels; a scissors lift mechanism mounted on the base and the platform, the lift adapted to adjust the height of the platform relative to the base; a sensor mounted on the cart for sensing a signal indicative of the location of the cart; and a controller mounted to cart, the controller in communication with the sensor for receiving sensed signals indicative of the location of the cart, the controller also in communication with the scissors lift mechanism for controlling actuation of the mechanism, the controller actuating the scissors lift mechanism for adjusting the height of the platform to a prescribed height based on the location of the cart. 22. A cart according to claim 21 further comprising a rotary turntable mounted to the platform, the turntable in communication with the controller; and wherein the controller is adapted to control rotation of the turntable to a prescribed rotational orientation based on the location of the cart.23. A cart according to claim 22 wherein the controller communicates with an external storage device for retrieving prescribed height and rotational orientation data based on the location of the cart.24. A cart according to claim 21 wherein the controller communicates with an external storage device for retrieving prescribed height data based on the location of the cart.25. A cart according to claim 21 wherein the controller is in communication with an onboard storage device for retrieving prescribed height data based on the location of the cart.26. A cart according to claim 21 further comprising a manual input device mounted to the cart for permitting manual input of height data for varying the height of the platform relative to the base.

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[미국특허] Automatic load positioning for a conveyor cart 원문보기

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