Cargo Unloading Apparatus with Dynamic Detection and Synchronized Bed Control

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Solution Overview

Problem

Existing unloading apparatuses for cargo groups are inefficient in unloading cargo items from a palletized state, as they require manual measurement and positioning, leading to longer unloading times and potential collisions between cargo items.

Innovation Solution

An unloading apparatus equipped with a cargo bed lifting and lowering mechanism, a first detection unit for measuring cargo heights and positions, a moving device for individual cargo handling, and a second detection unit to ensure safe lifting and positioning, controlled by a controller to optimize the unloading process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual measurement and positioning methods are used for cargo items, then the unloading process can be performed with simple equipment, but the unloading time increases and efficiency decreases

Engineering Contradiction:
Improveunloading efficiencyVSAvoidunloading time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The patent replaces manual measurement and positioning with an automated detection unit that uses imaging technology to automatically measure cargo positions and heights. The controller processes this data to determine optimal lifting positions, eliminating manual intervention and significantly reducing unloading time while improving efficiency.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs self-measurement and self-positioning of cargo items through the detection unit and controller. The apparatus automatically identifies cargo locations, calculates lifting positions, and executes the unloading process without external manual measurement, enabling continuous operation and improved productivity.

Inventive Principle:
Principle #25Self-service

2Reliability

If cargo items are lifted individually without synchronized cargo bed movement, then the positioning can be simpler, but collisions between cargo items may occur and unloading time increases

Engineering Contradiction:
Improvecollision preventionVSAvoidsynchronization mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The detection unit continuously monitors cargo positions and provides feedback to the controller. The controller uses this real-time information to adjust the cargo bed lowering speed and lifting position dynamically, ensuring that each cargo item is lifted at the optimal moment to prevent collisions while maintaining system reliability.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system implements dynamic synchronization between cargo bed lowering and detection unit movement. The cargo bed lowering speed is adjusted in real-time based on detected cargo positions, and the detection unit moves to appropriate heights to track cargo items, creating a coordinated dynamic system that prevents collisions.

Inventive Principle:
Principle #15Dynamics

3Measurement precision

If the detection unit remains stationary while cargo bed moves, then the detection unit structure can be simpler, but accurate continuous measurement of moving cargo items becomes difficult

Engineering Contradiction:
Improvecargo position measurement accuracyVSAvoiddetection unit movement mechanism complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The detection unit is made movable in the vertical direction to match the cargo bed's movement. This dynamic positioning allows the detection unit to maintain optimal measurement distance from cargo items throughout the unloading process, ensuring continuous accurate measurement without requiring complex horizontal tracking mechanisms.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The detection unit moves to the same height level as the cargo items being measured, creating an equipotential measurement condition. By positioning the detection unit at the appropriate height relative to the cargo bed, the system achieves accurate measurement of cargo positions and heights without requiring complex angular or distance compensation calculations.

Inventive Principle:
Principle #12Equipotentiality

Data Source

PatentUS10730708B2Unloading apparatus and unloading method
Publication Date: 2020.08.04 KK TOSHIBA
  • US10730708B2 patent drawing
  • US10730708B2 patent drawing
  • US10730708B2 patent drawing

AI summary

An unloading apparatus for unloading cargo items from a cargo group on a cargo bed includes a cargo bed lifting and lowering mechanism, a first detection unit that measures heights of cargos items and detects positions of cargo items forming the upper surface of the cargo group, a moving device that moves the cargo items to an unloading position, a second detection unit that detects whether a lower end of a cargo item being held by the moving device is above a position that is higher than the highest position of the cargo items at the upper surface of the cargo group, and a controller. The controller controls the raising and lowering of cargo bed in conjunction with the lifting of cargo items. The controller also controls the moving of the cargo items to the unloading position.