Passive Descending Track Switch for Shuttle Car Routing

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Solution Overview

Problem

Existing dispensing systems face complexity in track-switching mechanisms, requiring independent driving mechanisms for each segment, leading to increased cost and control complexity.

Innovation Solution

The track system incorporates passive track-switching segments that open and close under the push of the shuttle car, eliminating the need for dedicated driving mechanisms and simplifying the control strategy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If independent driving mechanisms are installed for each track segment, then the track-switching function is reliable, but the device complexity and cost increase significantly

Engineering Contradiction:
Improvetrack-switching function reliabilityVSAvoiddriving mechanism complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The track-switching segment utilizes the kinetic energy of the passing shuttle car to automatically open and close the track connection, eliminating the need for external driving mechanisms. The system serves itself by using the operational vehicle's energy to perform the switching function.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent removes the independent driving mechanisms from each track segment, extracting only the essential switching function that can be achieved through passive mechanical interaction with the shuttle car itself.

Inventive Principle:
Principle #2Taking out (Extraction)

2Measurement precision

If multiple driving mechanisms are used for track switching, then the switching control is precise, but the control strategy becomes complex

Engineering Contradiction:
Improveswitching control precisionVSAvoidcontrol strategy complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The track-switching segment automatically responds to the shuttle car's passage through passive mechanical interaction, eliminating complex control strategies while maintaining precise switching timing based on the vehicle's natural motion.

Inventive Principle:
Principle #25Self-service

3Device complexity

If passive track-switching segments are used, then the structure is simplified and costs reduced, but the control accuracy may be compromised

Engineering Contradiction:
Improvestructure complexityVSAvoidcontrol accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The passive track-switching segment achieves accurate control by using the shuttle car's own motion to trigger the switching action at the precise moment needed, combining structural simplicity with functional accuracy.

Inventive Principle:
Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This design simplifies the structure and reduces costs by eliminating the need for active driving mechanisms, while maintaining control accuracy through passive operation.

Implementation Method 1

the elastic element is configured to return the descending track-switching segment to the closed state

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

the damper is configured to dampening a swinging process of the swing rod

Methodology Applied
Scientific EffectViscous damping: Viscous Damping

Data Source

PatentEP4650300A1Track system, shuttle vehicle system, and distribution system
Publication Date: 2025.11.19 BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD
  • EP4650300A1 patent drawingFigure 1~2
  • EP4650300A1 patent drawingFigure 3~4
  • EP4650300A1 patent drawingFigure 5~6

AI summary

The present disclosure provides a track system, a shuttle car system, and a dispensing system. The track system comprises a descending track-switching mechanism. The descending track-switching mechanism comprises a descending track-switching segment disposed between a first longitudinal descending track segment and a second longitudinal descending track segment. The descending track-switching segment has its first end rotatably connected to the first longitudinal descending track segment, and its second end freely arranged. In the closed state, the second end of the descending track-switching segment engages with the second longitudinal descending track segment to connect the first longitudinal descending track segment with the second longitudinal descending track segment. In the open state, the second end of the descending track-switching segment is away from the second longitudinal descending track segment. During movement of the shuttle car from the transverse track to the second longitudinal descending track segment, the descending track-switching segment is configured to rotate under the push of the shuttle car to be switched from the closed state to the open state. There is no need to provide a dedicated driving mechanism for the opening and closing of the descending track-switching segment, thereby simplifying the structure of the track system.