Cable Car Shock Absorber With Slide Link For Variable Slope Tracks

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Solution Overview

Problem

Existing transport installations with variable slopes face challenges in providing progressive, reliable, and effective shock absorption during emergency braking or sudden stops, especially when the cabin's attitude must remain horizontal, as existing solutions are inadequate for managing kinetic forces and maintaining passenger safety and comfort.

Innovation Solution

A vehicle with a carriage, cabin support, onboard braking device, and shock absorber linked to the cabin support, featuring a slide link to guide the cabin support along a rectilinear shock absorption trajectory, and a long-stroke hydraulic shock absorber to dissipate energy, with a locking device to ensure the shock absorber is only active during emergency conditions, and sensors to trigger the system based on speed, acceleration, or slope thresholds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing shock absorption means are used in transport installations with constant slope, then the shock absorption works for that specific slope condition, but the shock absorption becomes ineffective or inadequate when the track has variable slope

Engineering Contradiction:
Improveadaptability to variable slope tracksVSAvoidreliability of shock absorption
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The shock absorption means are made dynamic by allowing the shock absorber to act along a trajectory that is not fixed relative to the vehicle body, but rather along the direction of motion of the vehicle. The slide link guides the movement along a rectilinear trajectory parallel to the running plane of the wheels, adapting to the variable slope conditions while maintaining reliable shock absorption through the hydraulic damper's ability to control deceleration forces in any orientation.

Inventive Principle:
Principle #15Dynamics

2Reliability

If the shock absorber is positioned to dampen vertical motion, then vertical shock absorption is effective, but the shock absorber cannot effectively dampen sudden deceleration from cable halting or emergency braking

Engineering Contradiction:
Improveeffectiveness of shock absorptionVSAvoidcoverage of emergency braking scenarios
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The shock absorption system transitions from a purely vertical orientation to a multi-dimensional solution where the shock absorber acts along a rectilinear trajectory parallel to the running plane of the wheels. This dimensional change allows the same shock absorber to effectively handle both vertical shocks and horizontal deceleration forces from emergency braking or cable halting, covering all emergency scenarios regardless of orientation.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Strength

If the cabin support is rigidly connected to the carriage, then the structure is simple and strong, but the cabin cannot be gradually slowed down during emergency braking

Engineering Contradiction:
Improvestructural strengthVSAvoidgradual deceleration capability
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The connection between the cabin support and carriage is segmented into two distinct functional elements: a rigid connection that provides structural strength, and a slide link with shock absorber that enables gradual deceleration. The rigid connection maintains structural integrity, while the separate slide link mechanism allows controlled energy absorption during emergency braking, achieving both strength and progressive deceleration.

Inventive Principle:
Principle #1Segmentation

4Device complexity

If the shock absorber trajectory is not rectilinear, then the mechanism is simpler, but the shock absorption is not progressive and reliable for variable slope tracks

Engineering Contradiction:
Improvemechanism complexityVSAvoidprogressive shock absorption
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

A slide link is introduced as an intermediary element between the cabin support and carriage. This slide link serves as a mediator that guides the shock absorber along a rectilinear trajectory parallel to the running plane of the wheels. The slide link adds minimal complexity while ensuring the shock absorption is progressive and reliable by constraining the movement to a controlled linear path, regardless of the variable slope conditions.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

The solution provides balanced and stable support for passengers with high-performance shock absorption, ensuring gradual deceleration and maintaining passenger comfort and safety on tracks with uniform or variable slopes, including complex profiles like parabolic tracks.

Implementation Method 1

transforming the kinetic energy of the cabin support into heat

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

shock absorber suitable for transforming the kinetic energy of the cabin support into heat

Methodology Applied
Scientific EffectViscous damping: Viscous Damping

Data Source

PatentUS11713212B2Vehicle with shock absorption for transporting passengers on a variable slope track and installation comprising said vehicle
Publication Date: 2023.08.01 POMAGALSKI
  • US11713212B2 patent drawing
  • US11713212B2 patent drawing
  • US11713212B2 patent drawing

AI summary

The invention relates to a vehicle (1) for transporting people on a sloping track (V) of a cable transport installation, said vehicle comprising a carriage (10) suitable for running on the track (V) while being drawn by at least one traction cable (C1) of the transport installation, a cabin support (120) carried by the carriage (10), an onboard braking device (14) and a shock absorber (13) linked to the onboard braking device and to the cabin support (120), and suitable for transforming the kinetic energy of the cabin support (120) into heat when the cabin support (120) moves relative to the onboard braking device (14) along a shock absorption trajectory in the shock absorption direction, characterized in that the onboard braking device (14) is rigidly connected to the carriage (10) and the vehicle also comprises a slide link (12) between the cabin support (120) and the carriage (10) to guide a movement of the cabin support (120) relative to the carriage (10) along the shock absorption trajectory.