Electrode Transfer Cart Locking Structure for Jumbo Roll Retention

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Solution Overview

Problem

Conventional electrode transfer carts experience safety accidents due to detachment of jumbo rolls under vertical or horizontal loads during transfer.

Innovation Solution

An electrode transfer cart with a lock device comprising a U-shaped lower block, an upper block hinge-fixed to the lower block, and a lock handle with a fixing pin that switches between locked and open states to secure the jumbo roll.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional U block structure is used to hold the jumbo roll, then the device is simple in structure, but the jumbo roll may detach due to imbalance of vertical or horizontal loads during transfer

Engineering Contradiction:
Improveprevention of jumbo roll detachmentVSAvoidstructure of lock device
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The lock device is divided into separate functional components: a lower block with mounting groove, an upper block with covering structure, a hinge mechanism for articulation, and a lock handle with fixing pin. This segmentation allows each component to perform its specific function while maintaining overall simplicity and reliability in preventing jumbo roll detachment

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The upper block is designed to be movable relative to the lower block through the hinge mechanism, allowing the covering structure to open and close dynamically. This dynamic capability enables easy loading and unloading of the jumbo roll while the lock handle provides a secure locked position during transfer, resolving the contradiction between simplicity and reliability

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If the upper block is fixed rigidly to the lower block, then the structure is simple and stable, but the lock device cannot be opened to load or unload the jumbo roll

Engineering Contradiction:
Improveloading and unloading of jumbo rollVSAvoidhinge and lock mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The hinge mechanism transforms the rigid fixed connection into a dynamic articulated connection, allowing the upper block to rotate relative to the lower block. This enables the covering structure to open for loading/unloading operations while maintaining structural integrity when closed, effectively balancing ease of operation with acceptable structural complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The lock handle with fixing pin is designed to engage the lock groove in advance before transfer operations begin. This preliminary locking action ensures the jumbo roll is securely held during transport, while the hinge mechanism remains ready to open when needed, facilitating efficient loading and unloading cycles

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4137444B1Electrode transfer cart comprising a locking device
Publication Date: 2025.09.10 LG ENERGY SOLUTION LTD
  • EP4137444B1 patent drawingFigure 1
  • EP4137444B1 patent drawingFigure 2
  • EP4137444B1 patent drawingFigure 3

AI summary

The present invention relates to a lock device for an electrode transfer cart, and an electrode transfer cart including the same, and according to the present invention, it is possible to easily transfer a jumbo roll of an electrode substrate, and prevent detachment of the jumbo roll during the transfer.