Construction Machine Bucket Oscillation Control
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Solution Overview
Problem
Conventional construction machines face challenges in quickly oscillating buckets during excavation and ground leveling, leading to increased resistance and irregularities in the construction surface due to the large capacity of hydraulic cylinders and rotational oscillations, which hinder smooth ground smoothing.
Innovation Solution
A construction machine with a working device capable of performing first and second rotational motions, where the second bucket actuator periodically oscillates the bucket in a direction orthogonal to its lateral axis while in pressure contact with the ground, utilizing a control device to control the bucket's yaw or tilt motion, allowing for reduced resistance and improved surface smoothness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a hydraulic cylinder with large capacity is used to operate the bucket, then the bucket can be moved rotationally in the pitch direction, but it becomes difficult to oscillate the bucket quickly
Solution Approach 1:
The invention divides the bucket actuation into two independent systems: a main hydraulic cylinder for pitch motion and a separate oscillation actuator for rapid oscillation. This segmentation allows each component to be optimized for its specific function, enabling quick oscillation without requiring a large-capacity main hydraulic cylinder.
Solution Approach 2:
The invention introduces a dynamic oscillation mechanism that allows the bucket to perform rapid back-and-forth movements in addition to the primary pitch motion. The oscillation actuator dynamically adjusts the bucket orientation during excavation, enabling quick adaptation to ground conditions without compromising the main lifting capability.
2Manufacturing precision
If the hydraulic cylinders operate the bucket rotationally in the pitch direction, then the bucket can be moved, but the oscillation causes undulations and irregularities in the construction surface
Solution Approach 1:
The invention introduces a dynamic oscillation mechanism that allows the bucket to perform rapid back-and-forth movements in addition to the primary pitch motion. The oscillation actuator dynamically adjusts the bucket orientation during excavation, enabling quick adaptation to ground conditions without compromising the main lifting capability.
Solution Approach 2:
The oscillation actuator produces periodic oscillations of the bucket during excavation. This periodic motion helps the bucket penetrate the ground more effectively while maintaining control over the oscillation amplitude and frequency, thereby reducing unwanted undulations in the final construction surface.
3Force
If the bucket is oscillated by operation control of hydraulic cylinders, then the movement resistance is reduced, but it becomes difficult to smooth the ground well during ground leveling work
Solution Approach 1:
The invention applies different motion characteristics to different phases of bucket operation: oscillation is activated during excavation to reduce penetration resistance, while the oscillation is suppressed or minimized during the ground leveling phase to ensure smooth surface finishing. This local differentiation of motion quality optimizes performance for each specific task.
Solution Approach 2:
The oscillation actuator produces periodic oscillations of the bucket during excavation. This periodic motion helps the bucket penetrate the ground more effectively while maintaining control over the oscillation amplitude and frequency, thereby reducing unwanted undulations in the final construction surface.
Data Source
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AI summary
Provided is a construction machine capable of reducing a resistance that a bucket receives from the ground and improving smoothness of a construction surface. The construction machine includes a working device (4) including a working device body and a bucket (30), first and second bucket actuators (32, 35) that rotationally moves the bucket (30), and a control device. The control device controls the second bucket actuator (35) so as to make the second bucket actuator (35) periodically oscillate the bucket (30) in a direction of a yaw motion during excavation work or ground leveling work.