Auxiliary Carriage for Construction Machine Positioning
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Solution Overview
Problem
Construction machines for special civil engineering, such as those used in Kelly drilling and pile-driving, require significant cognitive effort from operators due to the need for precise positioning and handling of long drill pipes and sheet piles, making it difficult to implement effective assistance systems for reducing operator fatigue.
Innovation Solution
A construction machine with an auxiliary carriage that can be moved along the leader using a second drive, equipped with actuators and sensors, allowing for sensing and actuating support to the operator, enabling precise positioning and manipulation of drilling or pile-driving implements independently of the advancing carriage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual positioning of drill pipes is performed by the operator, then precise positioning can be achieved, but operator fatigue increases and cognitive effort is high
Solution Approach 1:
The system enables self-service operation through automated sensor-based detection and actuator-controlled positioning of drill pipes. The sensor system automatically detects pipe positions and the control system autonomously coordinates the positioning process, eliminating the need for continuous manual intervention and reducing operator cognitive load while maintaining precision
Solution Approach 2:
The patent implements a feedback mechanism where sensors continuously monitor the position of drill pipes and provide real-time data to the control system. This feedback loop enables automatic adjustment and positioning, replacing manual operator decisions with automated control based on actual system state, thereby reducing operator fatigue while preserving positioning accuracy
2Difficulty of detecting and measuring
If sensor systems are installed at multiple positions on the leader, then detection capability is improved, but device complexity increases
Solution Approach 1:
The auxiliary carriage serves multiple functions: it carries sensors for detection, provides a mobile platform for measurement, and acts as an intermediary structure for positioning. This multi-functional design consolidates what would otherwise require separate dedicated sensor mounts and support structures at multiple leader positions, reducing overall system complexity while maintaining comprehensive detection capability
3Extent of automation
If the auxiliary carriage is added with sensors and actuators, then automation is improved, but device complexity increases
Solution Approach 1:
The auxiliary carriage acts as an intermediary platform that carries sensors and actuators without being part of the core drilling mechanism. This intermediary structure allows automation components to be added without fundamentally redesigning the main drill pipe handling system, thereby increasing automation while managing complexity through modular integration
Solution Approach 2:
The patent divides the drill pipe handling system into separate functional modules: the auxiliary carriage with sensors, the actuator system, and the main drilling mechanism. This segmentation allows each component to be independently optimized and maintained, reducing overall system complexity while enabling high automation through coordinated operation of discrete modules
Data Source
AI summary
A construction machine for special civil engineering, includes a leader on which an advancing carriage is guided, which carriage has a holder for a work device, in particular a drilling implement or pile-driving implement, and which carriage is connected with a first drive, by way of which it can be moved along the leader. An additional auxiliary carriage is arranged on the leader, which carriage can be moved along the leader by way of a second drive, wherein at least one actuator and/or at least one sensor is/are arranged on the auxiliary carriage.