Mobile Lifting Apparatus Hybrid Drive Segmentation

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Solution Overview

Problem

Mobile lifting apparatuses, such as cranes, face issues with environmental pollution, noise, and energy inefficiency due to the use of internal combustion engines for both truck movement and boom operations, leading to harmful emissions and excessive energy consumption.

Innovation Solution

The implementation of a mobile lifting apparatus with a truck equipped with a first internal combustion engine for truck movement and a second electric motor drive device for the boom, connected via power transmission means, allowing for energy savings, reduced emissions, and noise reduction, along with an energy recovery system using electric generators and accumulators.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If internal combustion engines are used to drive the boom and user devices, then the lifting apparatus can perform work operations, but harmful emissions and environmental pollution occur

Engineering Contradiction:

Improvework operation capabilityVSAvoidharmful emissions

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent divides the drive system into two independent parts: the truck drive system (internal combustion engine) and the boom drive system (electric motor). This segmentation allows the boom operations to be separated from the polluting internal combustion engine, eliminating harmful emissions during lifting operations while maintaining work capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent replaces the mechanical drive system (internal combustion engine directly driving the boom) with an electric drive system (electric motor). This substitution eliminates the harmful emissions associated with internal combustion engines while providing the necessary mechanical power for boom operations through electrical energy conversion.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If internal combustion engines are used for boom operations, then the lifting apparatus can function, but noise pollution increases

Engineering Contradiction:

Improveboom operation capabilityVSAvoidnoise emissions

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces the noisy internal combustion engine with a silent electric motor for driving the boom and user devices. This substitution eliminates the noise pollution generated by combustion engines while maintaining full operational capability for lifting and positioning loads.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If internal combustion engines are used for both truck and boom, then the lifting apparatus can operate independently, but energy efficiency decreases

Engineering Contradiction:

Improveindependent operation capabilityVSAvoidenergy efficiency

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent segments the energy consumption into two independent systems: the truck drive system and the boom drive system. This allows the boom system to use efficient electric motors for lifting operations, significantly improving overall energy efficiency compared to using internal combustion engines for both functions, while maintaining independent operational capability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the energy source parameter for the boom drive system from chemical energy (internal combustion engine) to electrical energy (electric motor). This parameter change dramatically improves energy efficiency for lifting operations, as electric motors are inherently more efficient than internal combustion engines, while the truck retains its independent mobility capability.

Inventive Principle:

Principle #35Parameter changes

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 configuration significantly reduces environmental pollution, noise, and energy waste, making the mobile lifting apparatus more efficient and performing compared to traditional models with internal combustion engines, while enabling energy recovery during operations.

Implementation Method 1

such second drive device comprises at least one electric motor connected by power transmission means to one or more user devices of the boom

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Implementation Method 2

provided with a first drive device comprising at least one internal combustion engine connected by power transmission means to one or more user devices of the truck which are hydraulically actuated

Methodology Applied

Scientific EffectCombustion: Combustion

Implementation Method 3

one or more user devices of the truck which are hydraulically actuated

Methodology Applied

Scientific EffectHydraulic pressure: Hydraulic Press

Data Source

PatentUS11235960B2Mobile lifting apparatus

Publication Date: 2022.02.01 CIFA

AI summary

A mobile lifting apparatus, comprising at least one truck, provided with a first drive device comprising at least one internal combustion engine connected by power transmission means to one or more user devices of the truck hydraulically actuated, and at least one boom provided with a second drive device.