Loading Amount Accumulation with Cross-Machine Weight Correction

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Solution Overview

Problem

Existing techniques for loading transport objects into transporting machines, such as dump trucks, face inaccuracies in measuring loaded amounts due to operator errors and variations in calculation accuracy between loading and transporting machines, leading to inefficiencies in production.

Innovation Solution

A loading amount accumulation device that includes a storage section, calculation section, difference calculation section, determination section, correction section, and output section to accurately determine and correct loaded amounts by comparing input data from both machines and adjusting accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If loading amount is calculated using only loading machine data, then calculation simplicity is maintained, but measurement precision deteriorates due to operator errors and bucket operation omissions

Engineering Contradiction:
Improveloading amount measurement precisionVSAvoidcalculation system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges the loading amount calculation systems of both the loading machine and transporting machine into a unified accumulation device. The device accumulates loading amounts from the loading machine and compares them with loaded amount data from the transporting machine, thereby improving measurement precision by cross-validating data from both sources rather than relying on a single machine's data alone.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The accumulation device implements feedback by comparing the accumulated loading amount data with the loaded amount data from the transporting machine. When discrepancies are detected, the system identifies accumulation failures and notifies the operator, creating a closed-loop feedback mechanism that improves measurement accuracy through continuous verification and correction.

Inventive Principle:
Principle #23Feedback

2Measurement precision

If loading amount is calculated using transporting machine data, then measurement accuracy improves, but calculation reliability deteriorates due to variations in calculation accuracy for each transporting machine

Engineering Contradiction:
Improveloaded amount calculation accuracyVSAvoidcalculation accuracy consistency
Core Design Contradiction:
Measurement precisionVSReliability

Solution Approach 1:

The accumulation device serves multiple functions: it accumulates loading amount data from the loading machine, compares it with loaded amount data from the transporting machine, determines accumulation success or failure, and provides notifications. This multi-functional design ensures consistent and reliable calculation accuracy across different transporting machines by standardizing the verification process rather than relying on machine-specific calculations.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Ease of operation

If bucket operation is not performed due to operator errors, then operation simplicity is maintained, but measurement precision deteriorates as accumulation of bucket load is overlooked

Engineering Contradiction:
Improvebucket operation simplicityVSAvoidbucket load accumulation accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The system provides feedback to the operator by comparing the accumulated loading amount with the actual loaded amount detected by the transporting machine. When discrepancies indicate missed bucket operations, the system notifies the operator, ensuring that operational simplicity does not compromise measurement precision through automated verification.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The accumulation device performs self-verification by automatically comparing its accumulated loading amount data with the loaded amount data from the transporting machine. This self-service mechanism detects accumulation failures caused by operator errors without requiring additional manual intervention, maintaining ease of operation while ensuring measurement precision.

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP3702741B1Loading amount accumulation device and loading amount accumulation system
Publication Date: 2023.09.06 HITACHI CONSTRUCTION MACHINERY CO LTD
  • EP3702741B1 patent drawingFigure 1
  • EP3702741B1 patent drawingFigure 2
  • EP3702741B1 patent drawingFigure 3

AI summary

A loading amount accumulation device includes a loading amount storage section 403 storing a loading amount, a loading amount calculation section 402 accumulating load weight data about a transport object in a working front to the loading amount, and updating the loading amount by the value after being accumulated, a difference calculation section 404 calculating a difference between a loaded amount of a vessel and the loading amount, an accumulation success/failure determination section 405 comparing an absolute value of the difference and a value Dth, determining that accumulation has failed when the absolute value is larger than the value Dth, and outputting a result, a loading amount correction section 406, when the failure is output as the result, performing correction so as to set the loaded amount data as the loading amount, and updating the loading amount by the corrected loading amount, and an output section outputting the loading amount.