Cabless Operator Platform Heating for Cold-Weather Construction Machines
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Solution Overview
Problem
Construction machinery with cabless operator platforms face challenges in providing adequate weather protection, particularly against low temperatures, while conventional heating methods like warm air blowers are inefficient and uncomfortable.
Innovation Solution
A self-propelled construction machine with a cabless operator platform incorporates heating elements that utilize conductive heat transfer to warm specific surfaces such as hand, armrests, and leaning surfaces, providing localized warmth through contact with heating fields.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an enclosed operator's cab is used, then weather protection and operator comfort are improved, but production costs and transport costs increase significantly
Solution Approach 1:
The heating system is divided into multiple independent heating zones (hand rest area, armrest area, standing surface) that can be independently controlled. Each zone has its own heating element and control mechanism, allowing selective activation based on specific needs rather than heating the entire operator platform.
Solution Approach 2:
The patent implements localized heating at specific contact points where the operator interacts with the machine (hands on controls, arms on armrests, feet on standing surface). This provides targeted warmth exactly where needed rather than attempting to heat the entire open operator platform, which would be energy-intensive and costly.
2Temperature
If conventional warm air blowers are used for heating, then some warmth is provided, but energy efficiency deteriorates and operator comfort worsens due to unpleasant constant airflow
Solution Approach 1:
The patent replaces the mechanical convection-based warm air blower system with a conduction-based heating system. Instead of using fans and ducts to force warm air circulation (mechanical system), the invention uses direct thermal conduction through heated surfaces that contact the operator's body parts, eliminating the need for mechanical air movement components.
Solution Approach 2:
The heating system uses a fluid (liquid or gas) circulated through heating elements embedded in or attached to the contact surfaces. This fluid-based thermal transfer system replaces the air-based convection system, providing more efficient and controllable heat transfer directly to the operator through thermal conduction rather than convection.
3Ease of operation
If cabless operator platforms are used, then communication between operators is improved, but weather protection against low temperatures deteriorates
Solution Approach 1:
The heating system provides localized thermal protection at specific contact points (hand rests, armrests, standing surface) rather than attempting to create a fully enclosed warm environment. This allows the operator platform to remain open for communication while providing targeted warmth where the operator's body contacts the machine surfaces.
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 approach significantly enhances operator comfort by allowing localized warming of extremities and body parts, even through thick clothing, without the discomfort of airflow, thus improving usability in cold outdoor conditions.
Implementation Method 1
heating elements which have an outer surface that forms a heating field and can be touched or contacted by an operator located inside the operator platform for warming purposes, wherein the heating field can be heated by conductive heat transfer from the heating device
Data Source
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AI summary
The invention relates to a self-propelled construction machine with a cab-less operator's platform. Within the cab-less operator's platform, at least one warming element is provided, comprising at least one heating device and a warming field that can be heated by conductive heat transfer from the heating device, in order to provide an operator located within the operator's platform with a way to warm up.