UTILITY TRUCK WITH BOOM AND DEFORMATION MONITORING SENSORS
First Claim
1. A utility truck (10) comprising:
- a boom (12) including two or more telescoping segments (20, 22, 24) for sliding relative to one another;
one or more pistons (14), each piston having a first end pivotally connected to a first pivot point (15) of a base bracket (17) of said boom (12) and a second end pivotally connected to a second pivot point (19) on an extension bracket (23) of said boom (12), for raising and lowering said boom (12);
first and second sensors (21) each mounted at different locations on said extension bracket (23), both sensors monitoring deformations of said extension bracket (23), an average of measurements of the first and second sensors providing a first load value representative of an axial deflection of the boom (12), a difference between the measurements of the first and second sensors providing a second load value representative of a lateral deflection of the boom (12); and
a control system (58) for receiving signals from said first and second sensors (21) and controlling power delivered to said one or more pistons (14) based on said received signals.
2 Assignments
0 Petitions
Accused Products
Abstract
A utility truck including a boom with telescoping segments, and pistons connected to two pivot points on a base bracket of the boom, for raising and lowering the boom. The truck includes first and second sensors each mounted at different locations on the extension bracket. Both sensors monitor deformations of the extension bracket. An average of measurements of the sensors provide a first load value representative of an axial deflection of the boom. A difference between the measurements of the sensors provide a second load value representative of a lateral deflection of the boom. A control system receives signals from the sensors and controls power delivered to the pistons based on the received signals.
15 Citations
7 Claims
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1. A utility truck (10) comprising:
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a boom (12) including two or more telescoping segments (20, 22, 24) for sliding relative to one another; one or more pistons (14), each piston having a first end pivotally connected to a first pivot point (15) of a base bracket (17) of said boom (12) and a second end pivotally connected to a second pivot point (19) on an extension bracket (23) of said boom (12), for raising and lowering said boom (12); first and second sensors (21) each mounted at different locations on said extension bracket (23), both sensors monitoring deformations of said extension bracket (23), an average of measurements of the first and second sensors providing a first load value representative of an axial deflection of the boom (12), a difference between the measurements of the first and second sensors providing a second load value representative of a lateral deflection of the boom (12); and a control system (58) for receiving signals from said first and second sensors (21) and controlling power delivered to said one or more pistons (14) based on said received signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification