Drilling Bucket Upper Guiding Device for Stability
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Solution Overview
Problem
Conventional drilling buckets face challenges when drilling large-diameter bore holes, as increasing the bucket size makes it too heavy for conventional supporting systems, while reducing the axial height risks tilting and getting stuck.
Innovation Solution
A drilling bucket with an upper guiding device above the hollow cylindrical body that abuts the bore hole wall, allowing for reduced axial height without tilting, and a modular design with separate guiding elements for adjustable diameter and fluid bypass for weight reduction and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the size of the drilling bucket is increased to drill large-diameter bore holes, then the drilling bucket can excavate larger bore holes, but the drilling bucket becomes too heavy to be handled by a conventional supporting system
Solution Approach 1:
The drilling bucket is divided into two main segments: a hollow cylindrical body for excavation and a separate upper guiding device for stabilization. This segmentation allows the cylindrical body to be optimized for weight reduction while the guiding device provides the necessary structural support for guidance, resolving the contradiction between size and weight.
Solution Approach 2:
The upper guiding device extends the functional height of the drilling bucket upward, utilizing the vertical dimension above the cylindrical body to provide guidance. This dimensional extension allows the cylindrical body itself to have reduced axial height without compromising guidance capability, thereby reducing weight while maintaining bore hole excavation capability.
2Weight of moving object
If the axial height of the drilling bucket is reduced to decrease weight, then the drilling bucket becomes lighter and easier to handle, but the drilling bucket would not be properly guided within the bore hole and may tilt or get stuck
Solution Approach 1:
The guidance function is segmented from the cylindrical body and implemented as a separate upper guiding device. This allows the cylindrical body to be shortened for weight reduction while the dedicated guiding device ensures proper guidance and prevents tilting, resolving the contradiction between weight and guidance stability.
Solution Approach 2:
The upper guiding device acts as an intermediary element between the drilling bucket system and the bore hole wall. It provides the necessary guidance and stabilization function without requiring the entire drilling bucket to have large axial height, enabling weight reduction while maintaining reliable guidance.
3Weight of moving object
If the axial height of the drilling bucket is reduced, then the weight is decreased, but the drilling bucket requires additional guiding structures to prevent tilting
Solution Approach 1:
The upper guiding device serves multiple functions simultaneously: it provides guidance against the bore hole wall, prevents tilting of the drilling bucket, and extends the functional height without adding significant complexity. This multi-functionality resolves the contradiction by achieving guidance stability with a relatively simple additional structure.
Solution Approach 2:
The upper guiding device is fixed to the hollow cylindrical body, merging the guidance function with the existing drilling bucket structure. This integration allows the guiding function to be added without creating a completely separate complex system, thereby minimizing the increase in device complexity while achieving the guidance necessary for reduced-height buckets.
Data Source
AI summary
A drilling bucket for drilling a bore hole in the ground including a hollow cylindrical body and at least one cutting tool arranged at a lower side of the hollow cylindrical body for cutting soil material. The hollow cylindrical body has a lower opening for receiving soil material cut by the at least one cutting tool. For guiding the hollow cylindrical body in the bore hole an upper guiding device is provided which is arranged above the hollow cylindrical body and fixed to the hollow cylindrical body. The upper guiding device is configured to abut on a side wall of the bore hole.