Lift control systems for lifting devices and lifting devices comprising the same
First Claim
1. A lift control system for operating a lifting device comprising a lift actuator coupled to a lift arm, the lift control system comprising:
- a control unit comprising a processor with a memory communicatively coupled to the processor and having computer readable and executable instructions, wherein the processor executes the computer readable and executable instructions to;
determine at least one operating characteristic of the lifting device and an operating time of the lifting device as the lifting device is actuated;
determine an accumulated load-time parameter for the lifting device based on the at least one operating characteristic and the operating time;
compare the accumulated load-time parameter to a service constant; and
provide an indication that a lift structural component or a lift electrical component requires service based on the comparison of the accumulated load-time parameter to the service constant.
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Accused Products
Abstract
A control system for a lifting device and a lifting device comprising the same are disclosed. The control system includes a control unit comprising a processor with a memory communicatively coupled to the processor and having computer readable and executable instructions. A battery is electrically coupled to the control unit in addition to at least one indicator. The processor executes the computer readable and executable instructions to: determine an operating characteristic of the lifting device and an operating time of the lifting device as the lifting device is actuated; determine an accumulated load-time parameter for the lifting device based on the operating characteristic and the operating time; store the accumulated load-time parameter in the memory of the lift control system; compare the accumulated load-time parameter to a service constant; and provide an indication the indicator that a lift structural component requires service based on the comparison.
70 Citations
27 Claims
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1. A lift control system for operating a lifting device comprising a lift actuator coupled to a lift arm, the lift control system comprising:
a control unit comprising a processor with a memory communicatively coupled to the processor and having computer readable and executable instructions, wherein the processor executes the computer readable and executable instructions to; determine at least one operating characteristic of the lifting device and an operating time of the lifting device as the lifting device is actuated; determine an accumulated load-time parameter for the lifting device based on the at least one operating characteristic and the operating time; compare the accumulated load-time parameter to a service constant; and provide an indication that a lift structural component or a lift electrical component requires service based on the comparison of the accumulated load-time parameter to the service constant. - View Dependent Claims (2, 3, 4, 5, 6, 7, 21, 22, 23, 24)
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8. A lifting device for raising and lowering a payload coupled to the lifting device, the lifting device comprising:
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a lift mast mechanically coupled to a base at a first end of the lift mast, wherein the base comprises a pair of base legs pivotally attached to a cross support such that the pair of base legs are pivotable with respect to the lift mast; a lift arm pivotally coupled to the lift mast at a second end of the lift mast; a lift actuator mechanically coupled to the lift mast and the lift arm, wherein actuation of the lift actuator raises or lowers the lift arm relative to the base; a base actuator mechanically coupled to the base legs, wherein actuation of the base actuator pivots the base legs with respect to the lift mast; a lift control system communicatively coupled to the lift actuator and the base actuator, the lift control system comprising; a control unit comprising a processor and a memory having computer readable and executable instructions, wherein the processor executes the computer readable and executable instructions to; determine at least one operating characteristic of the lifting device and an operating time of the lifting device as the lifting device is actuated; determine an accumulated load-time parameter for the lifting device based on the at least one operating characteristic and the operating time; compare the accumulated load-time parameter to a service constant; and provide an indication that a lift structural component or a lift electrical component requires service based on the comparison of the accumulated load-time parameter to the service constant. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 25, 26, 27)
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20. A method for operating a lifting device comprising a lift actuator for raising and lowering a load coupled to the lifting device, the method comprising:
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determining an operating characteristic of the lift actuator as the lift actuator is actuated; determining an operating time of the lift actuator as the lift actuator is actuated; determining an accumulated load-time parameter for the lift actuator based on the operating characteristic and the operating time; comparing the accumulated load-time parameter to a service constant indicative of a structural component requiring service; and activating an indicator when the accumulated load-time parameter is greater than the service constant.
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Specification