Industrial Truck Plastic Tire With Lateral Support Section

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Industrial trucks face difficulties maneuvering on loading platforms with grooves due to wheel dip, leading to impaired steering and control, and widening the wheel is not structurally feasible in restricted spaces, affecting steering behavior.

Innovation Solution

The industrial truck features a plastic tire with a cylindrical main section and a lateral support section that only engages when the main section loses contact, preventing wheel dip into grooves, maintaining optimal steering geometry and torque ratios.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If the wheel width is increased to prevent wheel dip into grooves, then the wheel can prevent dipping into grooves, but the wheel cannot be provided structurally due to restricted installation space and steering geometry is compromised

Engineering Contradiction:

Improvewheel dip into grooveVSAvoidinstallation space restriction

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The wheel is divided into two functional sections: a narrow main section for ground contact and steering, and a wider support section for preventing groove dipping. This segmentation allows each part to perform its specific function optimally without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support section extends in a direction perpendicular to the main contact surface, creating a lateral support structure. This dimensional change allows the wheel to prevent groove dipping without increasing the footprint or compromising installation space.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the wheel width is increased to prevent wheel dip into grooves, then the wheel can prevent dipping into grooves, but the steering axle is no longer in optimal wheel contact point causing additional moments

Engineering Contradiction:

Improvewheel dip into grooveVSAvoidsteering behavior

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parts of the wheel have different widths tailored to their specific functions: the main contact section remains narrow for optimal steering geometry, while the support section is wider to prevent groove dipping. This local differentiation resolves the contradiction between preventing wheel dip and maintaining steering quality.

Inventive Principle:

Principle #3Local quality

3Object-affected harmful factors

If a wider wheel is used to prevent groove dipping, then wheel dip is prevented, but the wheel cannot be provided structurally due to restricted installation space

Engineering Contradiction:

Improvewheel dip into grooveVSAvoidinstallation space

Core Design Contradiction:

Object-affected harmful factorsVSArea of stationary object

Solution Approach 1:

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

Inventive Principle:

Principle #1Segmentation

4Object-affected harmful factors

If the wheel width is increased to prevent wheel dip into grooves, then the wheel can prevent dipping into grooves, but the turning axle geometry is compromised affecting steering torques

Engineering Contradiction:

Improvewheel dip into grooveVSAvoidsteering torque ratio

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP3388308B1Industrial truck for loading and unloading of loading areas with grooves

Publication Date: 2020.05.27 JUNGHEINRICH AG

Figure 1~2
Figure 3~4

AI summary

Industrial truck (10) for loading and unloading grooved loading surfaces with at least one steerable wheel (22) having a rim (34) and a tire (32) made of plastic material mounted on it, wherein the tire (32) has a cylindrical main section and a laterally projecting support section, wherein the main section forms a contact surface (46) for the wheel (22) and the support section forms a support surface (48) which runs freely when the contact surface (46) is in contact and can support the industrial truck (10) when the contact surface (46) is in contact.