Electric Crane Power Unit Layout Above the Outrigger Support
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Solution Overview
Problem
There is a demand for cranes to operate on electricity for environmental protection, but existing cranes rely on engines for power.
Innovation Solution
A crane design that includes a traveling vehicle body with a main frame supporting a revolving body, outrigger support sections, and a power supply unit with a current conversion unit that converts alternating current to direct current for a rechargeable battery, enabling electric operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a crane uses an engine for power, then it can operate with high power output, but it causes environmental pollution and fails to meet eco-friendly requirements
Solution Approach 1:
The patent replaces the engine-based mechanical power system with an electric power system using a rechargeable battery and motor. This substitution eliminates exhaust emissions and environmental pollution while providing sufficient power output for crane operations through electric motors that can deliver high torque when needed.
Solution Approach 2:
The patent changes the energy source parameter from chemical energy (engine fuel) to electrical energy (rechargeable battery). This parameter change enables eco-friendly operation while maintaining operational capability through proper sizing of the battery system and electric motors to match the power requirements of the crane.
2Object-affected harmful factors
If a crane is converted to electric operation with a rechargeable battery, then it can operate without emissions, but it requires significant space for the battery and power supply components
Solution Approach 1:
The patent utilizes the vertical space above the outrigger support section rather than only horizontal space within the main frame. By placing the power supply unit in the vertical dimension above existing structural components, the design accommodates the battery and power supply without significantly increasing the crane's footprint or interfering with operational clearance.
Solution Approach 2:
The patent nests the power supply unit within the existing structural framework of the crane, specifically positioning it above the outrigger support section which is already part of the main frame structure. This nesting approach allows the power supply components to be integrated into the existing spatial arrangement rather than requiring entirely separate space.
3Duration of action of moving object
If a crane uses a large rechargeable battery for extended operation, then it can maintain power for longer duration, but it increases the overall weight of the vehicle body
Solution Approach 1:
The patent employs a dynamic power management system that can adjust power consumption based on operational needs. The control system monitors battery charge levels and can prioritize essential functions, manage auxiliary systems, and optimize motor operation to extend operational duration while minimizing the impact of battery weight on overall vehicle performance.
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 crane can run on electricity, reducing environmental impact and utilizing a high-voltage battery system for operations and mobility.
Implementation Method 1
a current conversion unit which is in a space above the left outrigger support section of the traveling vehicle body and on the right side of the main frame, and converts the alternating current supplied from the charging port into direct current and sends the direct current to the rechargeable battery
Data Source
AI summary
This crane, which has a revolving body that supports a boom, includes: a traveling vehicle body that has a main frame that supports the revolving body, and runs on electricity; a left outrigger support section and a right outrigger support section provided at the rear of the main frame so as to be shifted back and forth; and a power supply unit having a rechargeable battery that supplies the electricity to the traveling vehicle body, wherein the power supply unit includes a current conversion unit which is in a space above the right end of the left outrigger support section of the traveling vehicle body and on the right side of the main frame, and converts the alternating current supplied from the charging port into direct current and sends the direct current to the rechargeable battery.