Electric Crane Motor Layout Between Front and Rear Axles

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Solution Overview

Problem

There is a demand for electrification of cranes to address environmental concerns, and existing cranes primarily rely on fossil fuels.

Innovation Solution

A crane design incorporating a travel body with a frame supporting front and rear axles and a motor positioned between them, powered by a high-voltage battery, enabling electric travel and operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a crane uses an engine for travel, then it can achieve sufficient traveling power and speed, but it generates harmful emissions and has poor environmental performance

Engineering Contradiction:

ImproveemissionsVSAvoidtraveling power

Core Design Contradiction:

Object-affected harmful factorsVSPower

Solution Approach 1:

The patent replaces the traditional engine-based mechanical power system with an electric motor system. The electric motor is disposed below the frame and between the front-side and rear-side axles, directly driving the axles to provide traveling power without combustion, thereby eliminating emissions while maintaining sufficient power output.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Shape

If a motor is disposed below the frame between the axles, then the crane achieves compact layout and balanced weight distribution, but the space for other components is reduced

Engineering Contradiction:

ImprovelayoutVSAvoidcomponent arrangement

Core Design Contradiction:

ShapeVSDevice complexity

Solution Approach 1:

The patent utilizes the vertical space below the frame by disposing the motor in the downward direction, rather than occupying horizontal space between components. This vertical arrangement allows the motor to be positioned low in the vehicle body, achieving compact layout and balanced weight distribution without significantly reducing space for other components.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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

Enables cranes to travel and operate using electric power, reducing environmental impact and improving efficiency.

Implementation Method 1

a motor that is disposed below the frame and between the front-side axle and the rear-side axle, and is connected to the front-side axle and the rear-side axle

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Data Source

PatentUS20250361123A1crane

Publication Date: 2025.11.27 TADANO LTD

AI summary

This crane has a turning body that supports a boom, the crane including: a travel body that has a frame for supporting a front-side axle and a rear-side axle; and a motor that is disposed below the frame and between the front-side axle and the rear-side axle, the motor being connected to the front-side axle and the rear-side axle.