Industrial Truck Front Wall Impact Layer Design

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Solution Overview

Problem

Industrial trucks often damage loads and pallets during pickup due to collisions with the front wall, causing wear and noise, and existing impact protection solutions are either separate and non-retrofitable or ineffective in minimizing noise.

Innovation Solution

An impact layer made of flexible plastic is attached to the front wall, forming a hybrid unit with a steel plate for protection and noise reduction, which can be retrofitted and features a damping plastic layer on the steel plate's opposite side for enhanced performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a steel sheet impact protection is used, then impact protection is provided, but noise is increased and damage to pallet and load occurs

Engineering Contradiction:
Improveimpact protectionVSAvoidnoise and damage
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent combines a steel plate (rigid material) with a plastic impact layer (flexible material) to create a composite impact protection structure. The steel plate provides structural strength and attachment capability, while the plastic layer provides noise reduction and damage prevention through its flexible, cushioning properties.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent applies a flexible plastic impact layer to the front wall, replacing rigid steel sheet protection. This flexible layer absorbs impact energy through deformation, reducing noise and preventing damage to pallets and loads while maintaining protective function.

Inventive Principle:
Principle #30Flexible shells and thin films

2Strength

If a separate impact protection is used, then impact protection is provided, but it cannot be retrofitted to industrial trucks

Engineering Contradiction:
Improveimpact protectionVSAvoidretrofit capability
Core Design Contradiction:
StrengthVSAdaptability or versatility

Solution Approach 1:

The impact protection is divided into separate components: a steel plate for structural support and attachment, and a plastic impact layer for cushioning. This segmentation allows the components to be manufactured independently and assembled together, enabling retrofitting to existing industrial trucks without requiring complete redesign.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The steel plate acts as an intermediary between the rigid front wall structure and the flexible plastic impact layer. It provides a mounting interface that connects to the existing truck structure while supporting the plastic layer, facilitating easy installation and retrofitting.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Strength

If a thick steel element is used for impact protection, then impact protection is provided, but visual appeal and robust design are reduced

Engineering Contradiction:
Improveimpact protectionVSAvoidvisual appeal
Core Design Contradiction:
StrengthVSShape

Solution Approach 1:

The flexible plastic impact layer can be formed into smooth, aesthetically pleasing contours that cover the front wall, replacing the appearance of thick, bulky steel elements. The plastic material allows for sleek designs that maintain structural protection while enhancing visual appeal.

Inventive Principle:
Principle #30Flexible shells and thin films

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 solution effectively protects the load and vehicle from impact damage while minimizing noise, creating a visually appealing and robust design that can be easily exchanged or retrofitted.

Implementation Method 1

an impact layer (42) made of a flexible plastic which is attached to a front wall (30)

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a damping plastic layer is applied to the side of the steel plate facing away from the impact layer

Methodology Applied
Scientific EffectVibration damping: Damping

Data Source

PatentEP3138756B1Industrial truck
Publication Date: 2018.07.25 JUNGHEINRICH AG
  • EP3138756B1 patent drawingFigure 1~5

AI summary

Industrial truck with a drive part (12) and a load part (14) having a load fork (24), wherein a housing (26) of the load part (14) has a front wall (30) on the side facing the load fork (24) by which the receiving of a load on the load fork (24) is limited, wherein an impact layer (42) made of a flexible plastic is attached to the front of the front wall (30) over a flat area.