US 7,247,803 B2Granted

Loaded weight measurement method and loaded weight measurement device for dump truck

AssigneeKomatsu Ltd.

InventorsShu Takeda, Kazuo Matsuda

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Abstract

To measure the loaded weight of a dump truck, accurately and inexpensively. In a dump truck comprising a set of equalizer bars respectively provided rotatably on the left and right-hand sides of a vehicle body; first vehicle wheels supported respectively by way of first suspension devices on one side of each equalizer bar; second vehicle wheels supported respectively by way of second suspension devices on the other side of each equalizer bar; and third vehicle wheels provided respectively on the left and right-hand sides of the vehicle body separately from the equalizer bars, and being supported respectively by way of third suspension devices; a first load applied to the second suspension device is detected; a second load applied to the third suspension device is detected; the angle of inclination of the vehicle body is detected; and a loaded weight is calculated on the basis of the first and second loads, and the angle of inclination.

Claims5

Dependent claims

A loaded weight measurement method for a dump truck comprising a set of equalizer bars respectively provided rotatably on the left and right-hand sides of a vehicle body;

first vehicle wheels supported respectively by means of first suspension devices on one side of each equalizer bar;
second vehicle wheels supported respectively by means of second suspension devices on the other side of each equalizer bar;
and third vehicle wheels provided respectively on the left and right-hand sides of said vehicle body separately from said equalizer bars, and being supported respectively by means of third suspension devices, the loaded weight measurement method comprising:
a first step of detecting a first load applied to either said first suspension device or said second suspension device;
a second step of detecting a second load applied to said third suspension device;
a third step of detecting an angle of inclination of said vehicle body;
and
a fourth step of calculating a loaded weight on the basis of said first and second loads detected respectively in said first and second steps, and said angle of inclination detected in said third step.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/033,475Filed 12 Jan 2005
Priority: JP 2004-00758615 Jan 2004
Published: US 2005/0167165 A14 Aug 2005
Granted: 24 Jul 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

B60G 5/04
Resilient suspensions for a set of tandem wheels or axles having interrelated movements: with two or more pivoted arms, the movements of which are…
B60G 17/019
The regulating means comprising electric or electronic elements: characterised by the type of sensor or the arrangement thereof
G01G 19/08
Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups: for incorporation in vehicles
G01G 23/002
Auxiliary devices for weighing apparatus: means for correcting for obliquity of mounting