Rotatable Operator Station Control System for Safe Orientation Adjustment

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Solution Overview

Problem

Existing machine operator stations lack a controlled mechanism to adjust between different angular orientations based on the machine's suitability for operation, leading to inefficiencies and potential damage during directional changes.

Innovation Solution

A control system that transitions between locking and unlocking states to allow or inhibit the rotation of the operator station based on data indicative of the machine's suitability for adjustment, using input devices and sensing mechanisms to manage the rotation and ensure safe and efficient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the operator station is allowed to rotate freely between different angular orientations, then the adaptability and ease of operation are improved, but the risk of damage and operational safety deteriorate when the machine is not suitable for adjustment

Engineering Contradiction:
Improveoperator station orientation adjustmentVSAvoidmachine operation safety
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The control system continuously monitors machine operating conditions (speed, load, hydraulic pressure) and provides feedback to determine whether rotation is permitted. The system compares real-time operating parameters against predefined safety thresholds to dynamically control the locking mechanism, ensuring the operator station can only rotate when machine conditions are suitable.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The control system evaluates machine suitability for rotation before permitting the adjustment to occur. By checking operating conditions in advance and only unlocking the operator station when conditions are appropriate, the system prevents unsafe rotations from occurring in the first place, rather than attempting to correct unsafe conditions after they arise.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the operator station rotation is restricted to maintain safety, then the reliability is improved, but the ease of operation and productivity deteriorate

Engineering Contradiction:
Improvemachine operation safetyVSAvoidoperator station adjustment efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The locking mechanism transitions from a static fixed state to a dynamic controlled state. The system automatically adjusts the locking status based on real-time machine conditions, permitting rotation when safe and preventing it when unsafe. This dynamic adaptation eliminates the need for manual safety checks and maintains high productivity while ensuring safety.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control system automatically monitors machine conditions and makes decisions about permitting rotation without requiring operator intervention for safety assessments. The system self-evaluates whether rotation is safe based on monitored parameters and automatically controls the locking mechanism, freeing the operator to focus on productive tasks while maintaining safety.

Inventive Principle:
Principle #25Self-service

3Reliability

If a control system is implemented to monitor machine suitability for rotation, then the reliability is improved, but the device complexity increases

Engineering Contradiction:
Improvecontrolled rotation safetyVSAvoidcontrol system structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The control system leverages the machine's existing control architecture and sensors to monitor multiple operating parameters (speed, load, hydraulic pressure) that are already being tracked for other machine functions. By reusing existing control resources and integrating the rotation control logic into the existing control framework, the system achieves comprehensive safety monitoring without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10072394B1Control system and operating method in machine having rotatable operator station
Publication Date: 2018.09.11 CATERPILLAR INC
  • US10072394B1 patent drawing
  • US10072394B1 patent drawing
  • US10072394B1 patent drawing

AI summary

A control system for a machine with a rotatable operator station includes sensors to produce data indicative of suitability and unsuitability of the machine for initiating and completing adjustment, respectively, between a first control configuration where the operator station is at a first orientation and a second control configuration where the operator station is at a second orientation. A control device in the control system transitions the control system between a locking state for inhibiting rotation of the operator station and an unlocking state for permitting rotation, based on the suitability data and the unsuitability data.