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System and method for limiting secondary tipping moment of an industrial machine

A technology for industrial machines and controllers, which is applied to mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., and can solve problems such as increasing the service life of machines and welding fractures

Active Publication Date: 2013-07-31
JOY GLOBAL SURFACE MINING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can lead to weld fractures and other strains throughout the industrial machine
Therefore, limiting the tipping load of the industrial machine can increase the service life of the machine

Method used

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  • System and method for limiting secondary tipping moment of an industrial machine
  • System and method for limiting secondary tipping moment of an industrial machine
  • System and method for limiting secondary tipping moment of an industrial machine

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Embodiment Construction

[0013] Before describing in detail any embodiments of the invention, it is to be understood that the invention is not limited in its application to the detailed construction and arrangement of elements set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. As used herein, "comprises," "comprising," or "having" and variations thereof are meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms "mounted", "connected" and "coupled" are used broadly and encompass direct as well as indirect mountings, connections and couplings. Furthermore, "connected" and "coupled" are not limited to physical or mechanical connections or couplings, and may include elect...

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PUM

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Abstract

The present invention relates to a system and a method for limiting secondary tipping moment of an industrial machine, and specifically provides a method of controlling a digging operation of an industrial machine. The industrial machine includes a dipper connected to a dipper handle, a hoist rope attached to the dipper, and a hoist motor moving the hoist rope and the dipper. The method includes determining that the dipper is ready to be unloaded, activating a secondary tipping control operation by controlling a speed of the hoist motor, controlling an acceleration ramp rate of the hoist motor, and controlling a deceleration ramp rate of the hoist motor. The method further includes determining when the dipper is unloaded and deactivating the secondary tipping control operation.

Description

technical field [0001] The present invention relates to the control of excavation operations of industrial machines, such as electric rope shovels or machine shovels. Background technique [0002] Industrial machines, such as electric rope or machine shovels, draglines, etc., are used to perform excavation operations to remove material from, for example, mine banks. These machines and / or their elements are usually driven by motors. Tipping loads adversely affect the service life of the primary mechanical structures since they are largely due to cyclic fatigue loading of these structures. In some cases, during standard operation of a machine shovel with a bucket, ie while the shovel is digging in a bank, a dynamic tipping occurs. In addition, very high secondary tipping loads also occur during the dump cycle of the bucket, such as when the operator dumps and unloads the fully loaded bucket into a vehicle. The application of such primary and secondary tipping loads results ...

Claims

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Application Information

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IPC IPC(8): E02F9/20E02F3/54
CPCE02F9/2095E02F9/20E02F3/54E02F3/48E02F3/304
Inventor 特洛伊·霍特曼李武英约瑟夫·科尔威尔迈克尔·林斯特罗斯
Owner JOY GLOBAL SURFACE MINING INC