Multi-section Reaming Machine Tool for Anchor Rods
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Solution Overview
Problem
Existing anchor rod reaming machine tools have poor anti-pull-out properties due to limited reaming capabilities, primarily relying on blade cutting at the bottom of the hole, which affects construction quality and cost.
Innovation Solution
An anchor rod multi-section reaming machine tool is developed, featuring a hydraulic system with a reaming machine head, arch pressing device, and monitoring system, allowing for radial expansion and retraction within the hole to improve reaming efficiency and anti-pull-out properties, enabling multi-site variable-section reaming and soil compaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If blade cutting reaming is used at the bottom of the hole, then the reaming operation can be performed, but the anti-pull-out property is poor
Solution Approach 1:
The reaming process is divided into multiple sections along the hole depth. The reaming device can perform reaming operations at different depths (first position, second position, etc.) rather than only at the bottom, creating multiple reamed sections that collectively improve anti-pull-out property
Solution Approach 2:
The invention transitions from single-point reaming (bottom only) to multi-point reaming along the depth dimension. By adding the depth dimension to the reaming locations, the system creates multiple anchor points that significantly enhance the overall anti-pull-out performance
2Strength
If multi-section reaming is performed, then anti-pull-out property is enhanced, but drilling depth must be increased
Solution Approach 1:
The anchor rod system is segmented into multiple reamed sections at different depths. Each section contributes to the overall anchoring strength, allowing the system to achieve high anti-pull-out property without requiring excessive total depth, as the load is distributed across multiple reamed zones
3Strength
If arch pressing device expands radially, then soil compaction and reinforcement are achieved, but device complexity increases
Solution Approach 1:
The arch pressing device utilizes hydraulic expansion mechanisms to achieve radial expansion against the hole wall. The hydraulic system provides controlled force multiplication, enabling effective soil compaction and reinforcement without requiring overly complex mechanical structures
Solution Approach 2:
The arch pressing device transitions from a static configuration to a dynamic expanding structure. The device can expand radially to compact and reinforce soil, then retract to its original configuration for repositioning, providing flexible soil treatment capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool significantly enhances anti-pull-out properties, reduces drilling depth, saves construction costs, minimizes soil disturbance, and improves concrete pouring quality by allowing multi-site reaming and soil reinforcement.
Implementation Method 1
a piston arranged inside the cylinder body and capable of axially moving relative to the cylinder body so that the cylinder body is divided into a hydraulic cylinder upper chamber and a hydraulic cylinder lower chamber with variable volume
Implementation Method 2
the hydraulic cylinder upper chamber is connected with the hydraulic station through the first pipe, the hydraulic cylinder lower chamber is connected with the hydraulic station through the second pipe
Data Source
AI summary
An anchor rod multi-section reaming machine tool and an application thereof are provided. The machine tool is used cooperatively with an anchor rod drill rig. A hydraulic cylinder is fixed at a lower end of a drill rod of the anchor rod drill rig. A lower end of the piston rod is fixed at an upper portion of an arch pressing device fixing disc. An arch pressing device comprises a pair of upper arch arms and a pair of lower arch arms, upper ends of the upper arch arms are rotatably connected with a central position of a lower portion of the arch pressing device fixing disc, lower ends of the upper arch arms are rotatably connected with upper ends of the lower arch arms, and lower ends of the lower arch arms are rotatably connected with a central position of an upper portion of a base plate.