Construction Machine Haptic Lever Guidance for Target Track Alignment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing construction machine operation teaching systems interrupt the operator's line of sight, make it difficult to hear teaching sounds, and are cumbersome to operate, particularly when using electromagnetic actuators to assist with lever operation.
Innovation Solution
A construction machine equipped with a vibration applying device that provides distinct vibration patterns to the operator based on calculated index values, indicating deviations from the operation target, without interrupting the operator's line of sight or making it difficult to hear teaching sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If display device shows target position, then operation teaching is provided, but operator's line of sight is interrupted
Solution Approach 1:
The patent substitutes visual display feedback with tactile vibration feedback. The vibration motor provides haptic information about target track deviation directly to the operator's hand, eliminating the need for visual displays that would interrupt line of sight, thus resolving the contradiction between providing target position information and maintaining continuous line of sight.
2Loss of information
If sound generation device provides teaching sound, then operation teaching is provided, but operator cannot hear due to construction site noises
Solution Approach 1:
The patent replaces acoustic feedback (sound generation device) with haptic feedback (vibration motor). Vibrations are transmitted directly through the operation lever to the operator's hand, bypassing the noisy construction site environment, thus resolving the contradiction between providing teaching sound and overcoming noise interference.
3Manufacturing precision
If electromagnetic actuator moves operation lever, then attachment alignment with target track is improved, but operation becomes cumbersome
Solution Approach 1:
The patent replaces mechanical actuation (electromagnetic actuator moving the lever) with haptic guidance (vibration motor providing tactile feedback). The vibration pattern indicates deviation from target track, allowing the operator to manually align the attachment smoothly while receiving precise alignment guidance, thus resolving the contradiction between improving alignment precision and maintaining operation smoothness.
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 system effectively teaches operators how to maintain alignment with a target track by providing tactile feedback through vibrations, enhancing operability while reducing operational clumsiness and maintaining uninterrupted line of sight and auditory awareness.
Implementation Method 1
a vibration motor that applies vibrations to the operation lever when the attachment deviates from a target track
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A storage part (74) of a construction machine (10) stores an operation target which is set as a target of an operation of the construction machine for moving a specific portion of the construction machine (10) to a target position set as a destination to which the specific portion moves. A calculation part (55) calculates an index value which serves as an index indicating a deviation between the operation target and an actual state of the construction machine (10). A control device is configured to cause a vibration applying device to perform a first vibration applying operation when the index value satisfies a predetermined first condition, and to cause the vibration applying device to perform a second vibration applying operation when the index value satisfies a predetermined second condition different from the first condition.