Remote Defect Isolation Device for Vehicle Doors

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Solution Overview

Problem

In railway traffic vehicles, manually isolating defective doors is time-consuming and can cause delays, especially on long trains with multiple defective doors, as the process requires drivers to locate and close each door individually.

Innovation Solution

A remote defect isolation device comprising a remote isolation controller, an isolator with a hook, cam, electromagnet, and clamping device, allowing for remote control of door closure and isolation, including an obstacle detection mechanism to ensure safe operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If manual door isolation is used, then the door can be isolated, but the operation is time-consuming and causes delays

Engineering Contradiction:

Improveisolation operation timeVSAvoidmanual operation complexity

Core Design Contradiction:

Loss of timeVSEase of operation

Solution Approach 1:

The patent replaces the manual mechanical operation system with an automated electromagnetic system. The electromagnet activates the cam mechanism to rotate and release the hook, substituting manual mechanical actions with electromagnetic actuation. This reduces isolation operation time while maintaining operational reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The isolator mechanism is designed to automatically complete the isolation process once triggered. The cam rotation automatically releases the hook from the carrier, and the spring mechanism automatically returns components to their initial positions. This self-service capability eliminates the need for continuous manual intervention, significantly reducing operation time.

Inventive Principle:

Principle #25Self-service

2Productivity

If multiple defective doors need to be isolated, then all doors must be manually processed, but this increases operational time and potential for additional defects

Engineering Contradiction:

Improvedoor isolation efficiencyVSAvoidtotal isolation time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The electromechanical isolation system enables rapid sequential isolation of multiple doors. Each isolator can be activated independently through electromagnetic actuation, allowing the driver to isolate multiple defective doors quickly without the cumulative time penalty of manual operations. This significantly improves productivity when dealing with multiple defective doors.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If the driver must locate and manually close each defective door, then isolation can be completed, but the process is complex and time-consuming

Engineering Contradiction:

Improveisolation procedure simplicityVSAvoiddoor location and closure time

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent extracts the complex manual operations of door closing and locking from the isolation process. The electromechanical mechanism automatically handles door closure and hook release, separating these functions from manual driver actions. This simplifies the isolation procedure to merely activating the electromagnet, dramatically reducing both time and operational complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

4Reliability

If manual door isolation is performed on long trains, then all defective doors can be isolated, but the extended operation time can cause serious disruptions

Engineering Contradiction:

Improvecomplete isolation achievementVSAvoidoperational disruption time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The electromechanical isolation system ensures reliable completion of the isolation process while minimizing disruption time. The automated mechanism eliminates the variability and time consumption associated with manual operations, ensuring that isolation is achieved quickly and reliably for all defective doors on long trains, preventing serious operational disruptions.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP2708435B1Remote defect isolation device for vehicle doors and isolation method

Publication Date: 2015.05.27 NANJING KANGNI ELECTRONICS TECH

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AI summary

The present invention relates to a remote defect isolation device for vehicle doors, comprising a remote isolation controller (1), an isolator body, a hook (3), a carrier (4), a cam (7) as well as a clamping device. The clamping device comprises an iron core (9) and an electromagnet (8) around the outside of the iron core (9). A spring is arranged between the iron core (9) and the electromagnet (8); a switch (5) is arranged on the isolator body; a plate spring (10) is fixedly arranged on the isolator body; a steel wire rope (6) is arranged on the cam. At the same time, the present invention discloses the isolation method of the isolation device. Comparing to the state-of-the-art, the present invention can directly close and isolate the defective door to quickly terminate their service, by means of the remote control device. There is no need to reach every defective door, to manually operate its closing and isolation. The structure is reasonable; the control principle is simple and reliable; time can be saved; working efficiency is improved and serious disruptions such as passenger clearance can be avoided.