Trolley Wire Detection via Force-Triggered Collector Disengagement

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Solution Overview

Problem

Manual detection of trolley wire installation defects is labor-intensive and hazardous, particularly in high-rise frame bodies, with current collectors experiencing deviations and jamming during operation.

Innovation Solution

A trolley wire detection device comprising a current collector assembly, power mechanism, and engagement assembly, where the current collector assembly is driven along the trolley wire by the power mechanism via a preset engagement force, disengaging when resistance exceeds the preset force to indicate installation defects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If manual detection is used to check trolley wire installation, then detection can be performed with simple equipment, but labor consumption and time consumption increase significantly

Engineering Contradiction:
Improvedetection equipment simplicityVSAvoiddetection efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The current collector assembly automatically detects trolley wire defects through its own operational characteristics. When the trolley wire has installation defects, the resistance force automatically causes disengagement from the power mechanism, enabling self-detection without external intervention or complex detection equipment.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The engagement assembly acts as an intermediary between the current collector assembly and power mechanism. It translates the operational state into a detectable signal through engagement/disengagement based on resistance force, converting mechanical interaction into a clear detection indicator.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If manual detection is used for high-rise frame body trolley wires, then equipment complexity remains low, but safety hazards increase significantly

Engineering Contradiction:
Improvedetection system complexityVSAvoidsafety hazards
Core Design Contradiction:
Device complexityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces manual mechanical detection operations with an automated mechanical detection system. The current collector assembly and power mechanism automatically perform detection through controlled movement and engagement/disengagement, eliminating the need for manual intervention in hazardous high-rise environments.

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

3Reliability

If the engagement assembly provides strong engagement force to ensure connection, then connection reliability improves, but the ability to detect defects through disengagement decreases

Engineering Contradiction:
Improveconnection reliabilityVSAvoiddefect detection sensitivity
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The engagement force is designed with specific parameter characteristics - it provides sufficient strength for normal operation but remains below the threshold that would prevent disengagement under defect conditions. This parameter optimization enables both reliable connection and sensitive defect detection.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The engagement assembly dynamically responds to resistance force variations. Under normal conditions, it maintains stable engagement, but when resistance exceeds the preset force due to trolley wire defects, it automatically disengages, providing dynamic adaptation between connection reliability and defect detection sensitivity.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12611936B2Trolley wire detection device and trolley wire detection system
Publication Date: 2026.04.28 BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD
  • US12611936B2 patent drawing
  • US12611936B2 patent drawing
  • US12611936B2 patent drawing

AI summary

The present disclosure relates to a trolley wire detection device and a trolley wire detection system. The trolley wire is disposed on a guide rail and is disposed along an extending direction of the guide rail; the trolley wire detection device includes a current collector assembly connected to the trolley wire; a power mechanism, slidably disposed on the guide rail; and an engagement assembly disposed between the current collector assembly and the power mechanism, the engagement assembly being configured to provide a preset engagement force to connect the current collector assembly and the power mechanism; wherein the power mechanism is configured to drive the current collector assembly to move along the trolley wire through the engagement assembly, and the current collector assembly is configured to be disengaged from the power mechanism when a resistance generated by the trolley wire is greater than the preset engagement force.