Excavator Blade Prism Support Column for Interference-Free Measurement
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Solution Overview
Problem
In construction machines like hydraulic excavators, the placement of a prism for automatic control of the earth removal plate can interfere with the working area, leading to potential damage and increased operator burden due to the need for manual removal and reattachment of the prism and pole during operations.
Innovation Solution
A construction machine design that includes a support column on the earth removal plate, capable of switching between upright and lying postures, allowing for measurement without interference and reducing operator labor by omitting the need for attaching/removing the support column, with a protrusion member for stable support and a control system to restrict work device operations when the support column is upright.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the prism is provided on the earth removal plate via the pole to enable automatic control measurement, then measurement capability is improved, but the position of the prism and pole is included in the working area of the front device, causing interference and potential damage
Solution Approach 1:
The support column is made rotatable relative to the earth removal plate, allowing it to dynamically change its position between an extended state (for measurement) and a retracted state (to avoid interference with the front device). This dynamic adjustment resolves the contradiction by enabling the system to adapt its configuration based on operational requirements.
2Object-affected harmful factors
If the operator removes the prism and pole from the earth removal plate when not in use to avoid damage, then damage risk is reduced, but this process causes an increase in man-hours and raises burden on the operator
Solution Approach 1:
The support column is designed to be automatically extendable and retractable, eliminating the need for manual attachment and detachment operations. The system serves itself by allowing the support column to be stored in a retracted position during normal operation and automatically extended when measurement is needed, thereby removing the burden from the operator while maintaining damage prevention.
3Measurement precision
If the support column is kept in upright posture for measurement, then measurement capability is maintained, but it interferes with work device operations
Solution Approach 1:
The support column's rotatable design allows it to be positioned in an extended upright posture during measurement operations and rotated to a retracted parallel posture during front device operations. This dynamic repositioning enables the system to alternate between measurement and work modes without permanent interference, resolving the contradiction between measurement capability and operational ease.
Data Source
AI summary
A turning work vehicle includes a lower travel body, an upper turning body, a work device, a rotation body, and a support column. The lower travel body is provided with a blade. The upper turning body is supported by the lower travel body so as to be able to turn. The work device is supported by the upper turning body so as to be able to rotate. The rotation body is provided to the blade. The support column projects from the rotation body. A target prism, which is the measurement object of a total station, can be secured to the support column. The rotation body rotates in relation to the blade, whereby the posture of the support column is configured so as to be able to switch between an upright posture and a fallen posture.