Drop Hammer Testing System for Anchor Rod Impact Resistance
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Solution Overview
Problem
Traditional prestressed anchor rod systems fail to adapt to large-deformation rock masses, leading to anchor rod fractures, repeated repairs, and other accidents in mining and underground engineering, necessitating a system to test and improve the impact resistance of constant-resistance and large-deformation anchor rods.
Innovation Solution
A dynamics performance testing system comprising a main frame with a vertical structure, drop hammer device, clamping mechanism, lifting system, and protective devices, along with a measure and control system for real-time data sensing and analysis, allowing for accurate testing of anchor rods' impact resistance and deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional prestressed anchor rod systems are used, then the supporting structure can be simplified, but the anchor rods fracture under large deformation conditions
Solution Approach 1:
The patent changes the mechanical parameters of the anchor rod system by introducing a constant resistance mechanism that maintains a fixed load-bearing capacity while allowing large deformations. This parameter change enables the anchor rod to withstand rock mass deformation without fracture, resolving the contradiction between structural simplicity and reliability.
Solution Approach 2:
The patent transitions from a static prestressed anchor rod system to a dynamic constant-resistance system that can adapt to varying deformation conditions. The constant resistance machine allows the anchor rod to dynamically adjust its mechanical response, maintaining reliability while keeping the supporting structure relatively simple.
2Reliability
If constant-resistance and large-deformation anchor rods are developed, then the ability to withstand large deformation is improved, but a complex dynamics performance testing system is required
Solution Approach 1:
The testing system is segmented into distinct functional modules: a main frame providing structural support, a drop hammer device for applying controlled impact loads, a lifting means for resetting the hammer, and a measurement and control system for data acquisition. This segmentation makes the complex testing system more manageable and systematic.
Solution Approach 2:
The patent introduces a tray as an intermediary component between the drop hammer device and the anchor rod sample. The tray distributes the impact force uniformly and facilitates precise measurement of deformation, enabling accurate testing without requiring overly complex direct coupling mechanisms.
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 system enables reliable measurement of anchor rods' impact resistance and deformation, optimizing geometrical and structural parameters to enhance their ability to withstand large deformations, supporting applications in deep mining and geotechnical engineering.
Implementation Method 1
a drop hammer device configured to fall vertically from a predetermined height of the vertical frame to impact the tray
Implementation Method 2
the drop hammer device falls vertically, sense real-time impact data to the tray through a force sensor
Implementation Method 3
sense real-time impact data to the tray through a force sensor when the drop hammer device falls vertically
Implementation Method 4
a clamping means disposed on the top of the vertical frame and configured to vertically clamp the top of a sample including a sample body and a tray at the bottom of the sample body
Data Source
AI summary
A dynamics performance testing system, for use in testing the dynamics performance of an anchor rod or an anchor rode, comprising a main machine and a measurement and control system. The main machine comprises a vertical machine frame (1), a clamping apparatus (3) arranged on the top of the vertical machine frame (1) and used for vertically clamping the top end of a sample (6), where the sample (6) is provided at the bottom end thereof with a tray (61), a drop-hammering apparatus (2) used for being dropped vertically from the vertical machine frame (1) at a set height to impact the tray (61), a lifting apparatus used for lifting the drop-hammering apparatus at the bottom of the vertical machine frame (1) to the set height, and a protection apparatus used for physical protection and isolation to reduce bodily injury and noise. The measurement and control system controls the drop-hammering apparatus to select a parameter for drop-hammering and a process of lifting and dropping. The real-time impact on the tray (61) when the drop-hammering apparatus is dropped vertically is sensed by a force sensor, while real-time impact data received from a sensor device is analyzed, and a test result is outputted. The dynamics performance testing system is provided with versatility while the test result is accurate and reliable.