Compact Pulling Apparatus Thermal Management for Cold Weather

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Solution Overview

Problem

Existing compact pulling apparatuses face reliability and maintenance issues in rigorous winter conditions due to cold temperatures affecting electric motor performance and gasoline engine operation, and are not easily transportable to inaccessible areas.

Innovation Solution

A compact pulling apparatus with a watertight housing that maintains a minimum temperature using motor heat, evacuates excess heat, and maintains positive pressure to enhance reliability and accessibility, featuring a gasoline engine or electric motor with integrated heating and ventilation systems, and a generator for power generation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an electric motor is used to drive the track, then the apparatus can operate in various terrains, but cold temperatures significantly hinder the reliability and autonomy of the motor powered by batteries

Engineering Contradiction:

Improveterrain adaptabilityVSAvoidmotor reliability in cold conditions

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent converts the harmful cold external environment into a beneficial heating source by using the motor's own waste heat to warm the internal chamber and protect the batteries and motor from cold temperatures, thereby maintaining reliability in winter conditions

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The system uses its own motor-generated heat to service the thermal needs of the internal components, creating a self-sustaining thermal environment without requiring external heating sources

Inventive Principle:

Principle #25Self-service

2Adaptability or versatility

If a gasoline engine is used to drive the track, then the apparatus can operate in various terrains, but the combination of cold weather and heat released from the engine can cause ice and compacted snow to build up at sensitive points

Engineering Contradiction:

Improveterrain adaptabilityVSAvoidice and snow buildup

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful waste heat from the gasoline engine into a beneficial thermal source that prevents ice and snow buildup by directing it to warm sensitive external points of the apparatus

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent introduces thermal management intermediaries (ducts, channels) to transport and distribute the engine heat to specific locations where ice prevention is needed, mediating between the heat source and the protected areas

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the apparatus uses a watertight housing with motor, then the apparatus can protect internal components from water infiltration, but heat evacuation becomes necessary when temperature exceeds threshold

Engineering Contradiction:

Improveprotection from water infiltrationVSAvoidheat accumulation in sealed chamber

Core Design Contradiction:

ReliabilityVSTemperature

Solution Approach 1:

The patent applies different thermal management strategies to different locations: the housing is sealed for water protection while specific thermal pathways and evacuation channels are created at strategic locations to manage heat locally

Inventive Principle:

Principle #3Local quality

4Ease of operation

If the apparatus is designed to be compact for easy transportation, then it can be easily transported to difficult-to-access areas, but the internal chamber volume for heat management is limited

Engineering Contradiction:

ImprovetransportabilityVSAvoidinternal chamber volume

Core Design Contradiction:

Ease of operationVSVolume of stationary object

Solution Approach 1:

The patent nests the thermal management systems (heating elements, evacuation channels) within the compact housing structure, integrating multiple functions into the limited internal volume without increasing external dimensions

Inventive Principle:

Principle #7Nested doll (Nesting)

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 apparatus maintains operational efficiency in cold conditions, prevents ice and water infiltration, and allows easy transportation to difficult-to-access areas, with the ability to pull significant loads over long distances and generate electricity for external use.

Implementation Method 1

maintaining a minimum temperature in the inner chamber using heat released by the motor

Methodology Applied

Scientific EffectHeat release: Joule Heating

Implementation Method 2

evacuating heat from within the inner chamber if the temperature exceeds a given threshold

Methodology Applied

Scientific EffectHeat evacuation: Convection

Implementation Method 3

maintaining a positive pressure within the inner chamber

Methodology Applied

Scientific EffectPressure maintenance: Pressurisation

Data Source

PatentUS8827014B2Compact pulling apparatus

Publication Date: 2014.09.09 MARTEL YVON

AI summary

The apparatus includes a watertight elongated housing extending along a longitudinal axis and defining an inner chamber, a track disposed around the housing on its longitudinal axis and enabling the apparatus to move when the track is rotatably driven around the housing, and a track-driving motor. The motor is located within the inner chamber of the housing and includes an output shaft mechanically connected to the track. The apparatus can also include a ventilation circuit for ventilating the inner chamber of the housing and a generator for producing electricity. A method of operating a motorized pulling apparatus is also disclosed.