System for monitoring load and angle for mobile lift device
First Claim
1. A monitoring system for monitoring a force at a load moving device which uses at least one cable attached to a load to lift or slide the load, the system comprising:
- a first angle sensor configured to generate a first angle signal representative of a first angle of the cable relative to the device;
a second angle sensor configured to generate a second angle signal representative of a second angle of the cable relative to the device; and
a monitoring circuit coupled to the first and second angle sensors to generate a force signal representative of at least one force being applied to the load moving device based upon the angle signals.
2 Assignments
0 Petitions
Accused Products
Abstract
A mobile lift device having a load moving device capable of engaging a load is provided. The mobile lift device includes one or more systems for stabilizing the mobile lift device during operation of the load moving device. According to one exemplary embodiment, the mobile lift device is a heavy duty wrecker having a rotatable boom assembly. The heavy duty wrecker comprises a monitoring system for stabilizing the wrecker during operation of the boom assembly. The monitoring system comprises a plurality of sensors and a monitoring circuit coupled to the sensors to generate a force signal representative of at least one force being applied to the wrecker based upon the transmitted signals.
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Citations
28 Claims
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1. A monitoring system for monitoring a force at a load moving device which uses at least one cable attached to a load to lift or slide the load, the system comprising:
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a first angle sensor configured to generate a first angle signal representative of a first angle of the cable relative to the device; a second angle sensor configured to generate a second angle signal representative of a second angle of the cable relative to the device; and a monitoring circuit coupled to the first and second angle sensors to generate a force signal representative of at least one force being applied to the load moving device based upon the angle signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mobile lift device, the device comprising:
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a chassis for movement over a surface; a rotator supported by the chassis; a boom coupled to the rotator to permit the boom to pivot about at least two axes relative to the chassis; a first hydraulic operator coupled to the boom to pivot the boom relative to the rotator; a second hydraulic operator coupled to the rotator to rotate the rotator relative to the chassis; a plurality of outriggers coupled to the chassis to provide stabilization of the chassis during load handling; a sheave supported at the distal end of the boom, the sheave rotatably supported to rotate about at least two axes relative to the boom; a first hoist supported at the rotator; a cable supported by the first hoist and the first sheave; a first angle sensor configured to generate a first angle signal representative of a first angle of the cable relative to the boom; a second angle sensor configured to generate a second angle signal representative of a second angle the cable relative to the boom; and a monitoring circuit coupled to the first and second angle sensors to determine at least one force applied to the device based at least upon the angle signals and determining whether the force is sufficient to tip the mobile lift device. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A tow vehicle for handling loads such as disabled automobiles, trucks and equipment, the vehicle comprising:
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a chassis; a rotator supported by the chassis; an extendable boom coupled to the rotator to permit the boom to pivot about at least two axes relative to the chassis, wherein the boom is extendable between a first length and a second length; a first hydraulic operator coupled to the boom to pivot the boom relative to the rotator; a second hydraulic operator coupled to the rotator to rotate the rotator relative to the chassis; a plurality of outriggers coupled to the chassis to provide stabilization of the chassis during load handling; a first sheave supported at the distal end of the boom, the first sheave rotatably supported to rotate about at least two axes relative to the boom; a second sheave supported at the distal end of the boom proximate the first sheave, the second sheave rotatably supported to rotate about at least two axes relative to the boom; a first hoist supported at the rotator; a second hoist supported at the rotator; a first cable supported by the first hoist and the first sheave; a second cable supported by the second hoist and the second sheave; a first angle sensor configured to generate a first angle signal representative of a first angle of the first cable relative to the boom; a second angle sensor configured to generate a second angle signal representative of a second angle the first cable relative to the boom; and a monitoring circuit coupled to the first and second angle sensors to determine at least one force applied to the vehicle based at least upon the angle signals and determining whether the force is sufficient to tip or overload the tow vehicle. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification