Tiltrotator Fork Carriage Level Guidance Against Tipping Loads

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

The use of a fork carriage with a tiltrotator on a work machine poses safety concerns due to the risk of tipping loads, which has led some manufacturers to avoid offering this combination, despite its potential advantages in usability and functionality.

Innovation Solution

A control system incorporating an inclinometer on the tiltrotator to sense the orientation of the fork carriage relative to gravity, coupled with a display unit in the operator's cabin to provide visual feedback and audio/vibration warnings when the inclination exceeds safe thresholds, ensuring the forks remain level.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fork carriage is mounted on a tiltrotator to enable multi-directional loading, then the versatility and usability of the work machine is improved, but the safety risk increases due to potential tipping loads

Engineering Contradiction:
Improvemulti-directional loading capabilityVSAvoidsafety against tipping loads
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system continuously monitors the tiltrotator's angular position and fork carriage orientation using sensors, providing real-time feedback to the control unit. This enables the system to detect potentially dangerous tilting conditions and alert the operator, resolving the safety concern while maintaining the versatile multi-directional loading capability

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The control system acts as an intermediary between the operator and the fork carriage operation. It processes sensor data about tiltrotator position and fork orientation, then provides guidance information to the operator, mediating the interaction to prevent unsafe operations while preserving the adaptability of the system

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the fork carriage is allowed to tilt freely with the tiltrotator, then the ease of operation is improved, but the measurement precision of fork orientation deteriorates

Engineering Contradiction:
Improveflexible fork positioningVSAvoidfork level orientation accuracy
Core Design Contradiction:
Ease of operationVSMeasurement precision

Solution Approach 1:

The system uses sensors to continuously measure the actual orientation of the fork carriage relative to gravity, providing precise feedback information to the operator through the display. This allows the operator to freely position the forks while maintaining accurate knowledge of their orientation, resolving the contradiction between operational freedom and measurement precision

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces mechanical level indicators with electronic sensors and digital display systems. The sensor-based measurement system provides more precise and reliable orientation data than traditional mechanical indicators, enabling accurate fork positioning while maintaining ease of operation

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enhances safety by providing real-time orientation feedback and warnings, preventing accidental tilting and potential load loss, thereby increasing the usability and safety of fork carriages with tiltrotators.

Implementation Method 1

an inclinometer configured to be arranged on the lower part of the tiltrotator for sensing the orientation of the lower part with respect to gravity

Methodology Applied
Scientific EffectGravity sensing: Gravitation

Data Source

PatentUS20260109584A1Operator guidance for the use of a fork carriage in combination with a tiltrotator
Publication Date: 2026.04.23 ROTOTILT GRP
  • US20260109584A1 patent drawing
  • US20260109584A1 patent drawing
  • US20260109584A1 patent drawing

AI summary

The invention relates to a control system for a work machine for the use of a fork carriage with forks in combination with a tiltrotator, the tiltrotator comprising an upper part arranged to be mounted to a work arm of a work machine and a lower part that is rotatably and pivotally connected to the upper part, wherein the control system is configured to be activated when fork carriage is mounted on the lower part of the tiltrotator, the control system being characterised in that it includes an inclinometer arranged on the lower part of the tiltrotator for sensing the orientation of the lower part with respect to gravity, and a display unit arranged in an operator's cabin of the work machine, wherein the display unit is configured to illustrate the current orientation of the fork carriage at the lower part of the tiltrotator based on input from the inclinometer to assist the operator in keeping the lower part and the mounted fork carriage level with respect to gravity.