Work Equipment Control Device for Uniform Bucket Angle Maintenance
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Solution Overview
Problem
Existing work equipment control systems require explicit operator intervention to maintain uniform angles, particularly at inflection points where working plane angles vary, leading to inefficiencies in shaping operations.
Innovation Solution
A work equipment control device that automatically adjusts the bucket angle to maintain uniformity by using a bucket position-determining unit, target working line-determining unit, distance-determining unit, and bucket control unit, which cancels retained angles without explicit operator input when approaching an inflection point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If automatic angle maintenance control is applied to work equipment, then the uniformity of bucket angle is improved, but the system complexity increases and requires explicit operator intervention at inflection points
Solution Approach 1:
The control device determines whether the bucket is approaching an inflection point in advance by calculating the distance to the inflection point. When the distance is within a predetermined threshold, the system preemptively cancels the retained angle information before the bucket actually reaches the inflection point, preventing angle maintenance issues rather than reacting to them after they occur.
Solution Approach 2:
The system automatically detects inflection points by analyzing target working line data and autonomously determines when to cancel retained angle information based on calculated distances. This eliminates the need for explicit operator intervention, allowing the control system to self-manage angle maintenance throughout the entire excavation process including inflection points.
2Ease of operation
If manual switch operation is required at inflection points, then the bucket angle can be adjusted to suitable values, but the operator workload increases and operation efficiency decreases
Solution Approach 1:
The control device automatically monitors the bucket's position relative to inflection points and autonomously cancels retained angle information when appropriate. This self-managing capability eliminates the need for operator intervention at inflection points, maintaining ease of angle adjustment while significantly improving operation efficiency by removing manual switch operations from the workflow.
Solution Approach 2:
The system continuously calculates the distance between the bucket and inflection points based on target working line data, providing real-time feedback about the bucket's proximity to inflection points. This feedback enables the control device to automatically make timing-critical decisions about when to cancel retained angle information, ensuring smooth transitions through inflection points without operator involvement.
3Manufacturing precision
If the bucket control system maintains angle uniformly throughout the entire excavation, then angle consistency is improved, but the system cannot properly handle inflection points where working plane angles vary
Solution Approach 1:
The control device identifies inflection points in advance by analyzing target working line data and calculates when the bucket will reach these points. By determining the distance to inflection points beforehand, the system can preemptively cancel retained angle information at the appropriate moment, allowing smooth transitions between different working plane angles while maintaining angle consistency on each individual plane.
Solution Approach 2:
The system dynamically adjusts its control behavior based on the bucket's position relative to inflection points. When the distance to an inflection point is within a predetermined value, the control device transitions from maintaining a retained angle to canceling it, allowing the bucket angle to adapt to the changing geometry of the working plane. This dynamic adjustment enables the system to handle varying working planes effectively.
Data Source
AI summary
A control device includes a bucket position-determining unit, a target working line-determining unit, a distance-determining unit, and a bucket control unit. The bucket position-determining unit determines a position of a bucket. The target working line-determining unit determines a target working line indicating a target shape of an object to be excavated by work equipment. The distance-determining unit determines a distance between the bucket and a reference position which is an end of the target working line. The bucket control unit controls the bucket such that an angle of the bucket becomes a uniform angle, when the distance between the bucket and the reference position is equal to or greater than a bucket control-limiting threshold value.