Loadage correction system

Patent metadata

Field	Value
Publication number	US-10794754-B2
Application number	US-201816493318-A
Country	US
Kind code	B2
Filing date	Jun 20, 2018
Priority date	Jul 13, 2017
Publication date	Oct 6, 2020
Grant date	Oct 6, 2020

Abstract

A loadage correction system includes a loading-weight measuring unit that measures a loading weight of a work object loaded by a loader, a loadage measuring unit that measures loadage of the work object loaded on a transporter from the loader, a communication unit that performs data transfer of measurement results obtained in the loading-weight measuring unit and the loadage measuring unit, a difference calculating unit that calculates a difference between the measurement results of the loading-weight measuring unit and the loadage measuring unit input from the loading-weight measuring unit and the loadage measuring unit, a difference storing unit that stores a difference calculation result, a correction-target determining unit that determines the loading-weight measuring unit or the loadage measuring unit, the measurement result of which needs to be corrected, from the loading-weight measuring unit and the loadage measuring unit, and a correction-value calculating unit that calculates a correction value for the loading-weight measuring unit or the loadage measuring unit.

First claim

The invention claimed is:

1. A loadage correction system including one loader and a plurality of transporters, the loadage correction system comprising:
a loading-weight measuring unit set in the loader, the loading-weight measuring unit measuring a loading weight of a work object loaded by the loader;
a loadage measuring unit set in the transporter, the loadage measuring unit measuring loadage of the work object loaded on the transporter from the loader;
a communication unit that performs data transfer of measurement results obtained in the loading-weight measuring unit and the loadage measuring unit;
a difference calculating unit that calculates a difference between the measurement results of the loading-weight measuring unit and the loadage measuring unit input from the loading-weight measuring unit and the loadage measuring unit directly or via the communication unit;
a difference storing unit that stores a difference calculation result by the difference calculating unit;
a correction-target determining unit that determines, using stored information of the difference storing unit, the loading-weight measuring unit or the loadage measuring unit, the measurement result of which needs to be corrected, from the loading-weight measuring unit and the loadage measuring unit; and
a correction-value calculating unit that calculates a correction value for the loading-weight measuring unit or the loadage measuring unit determined as a correction target by the correction-target determining unit.

2. The loadage correction system according to claim 1 , wherein, when difference calculation results for all combinations of measurement results of the loader and the respective transporters stored in the difference storing unit have a same sign, the correction-target determining unit determines the loading-weight measuring unit as the correction target.

3. The loadage correction system according to claim 1 , further comprising a threshold setting unit capable of setting a threshold for the difference calculation result stored in the difference storing unit, wherein
the correction-target determining unit determines, as the correction target, the loadage measuring unit corresponding to the difference calculation result stored in the difference storing unit exceeding the threshold set by the threshold setting unit.

4. The loadage correction system according to claim 1 , wherein
the correction-target determining unit includes a determination-period setting unit capable of setting a period for performing the determination of the correction target, and
the correction-target determining unit performs the determination using stored information of the difference storing unit in the period set by the determination-period setting unit.

5. The loadage correction system according to claim 1 , further comprising a display unit that displays the measurement result of the loading-weight measuring unit or the loadage measuring unit corrected by the correction-value calculating unit, wherein
the display unit displays a determination result of the correction-target determining unit and a calculation result of the correction-value calculating unit together.

6. The loadage correction system according to claim 1 , further comprising a correction-implementation determining unit that determines whether to perform correction of the measurement results of the loading-weight measuring unit and the loadage measuring unit with the correction value calculated by the correction-value calculating unit.

7. The loadage correction system according to claim 5 , further comprising a recalibration determining unit that determines necessity of recalibration of the loading-weight measuring unit and the loadage measuring unit from the calculation result of the correction-value calculating unit, wherein
the display unit displays a determination result of the recalibration determining unit.

8. The loadage correction system according to claim 5 , wherein the loader includes the difference calculating unit, the difference storing unit, the correction-target determining unit, the correction-value calculating unit, and the display unit.

Assignees

• Hitachi Construction Mach Co

Inventors

• Tomita Kunitsugu
• Ishii Akinori

Classifications

• E02F9/267 Primary

  Diagnosing or detecting failure of vehicles · CPC title

• E02F9/20

  Drives; Control devices (gearings in general F16H; controlling in general G05; electric multi-motor drives H02K, H02P) · CPC title

• E02F9/264

  Sensors and their calibration for indicating the position of the work tool · CPC title

• E02F9/268 Primary

  with failure correction follow-up actions · CPC title

• G01G23/01

  Testing or calibrating of weighing apparatus · CPC title