Tension Meter for Anchor Rods with Rotation and Lifter
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Solution Overview
Problem
Conventional tension meters for anchor rods with constant resistance and large deformation have a small measurement range, low load capacity, and are unable to perform circular pressurization, making them inadequate for on-site testing.
Innovation Solution
A tension meter comprising a pull rod, a hollow jack with a rotation device and lifter, and an air-driven hydraulic pump for adjusting the hollow jack's angle and height, along with a parameter calculating device to measure tension force and range, enabling large deformation and resistance testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional tension meters are used for anchor rod testing, then the device structure is simple, but the measurement range is small and load capacity is low
Solution Approach 1:
The tension meter is divided into multiple independent functional modules: hollow jack for tensioning, rotation device for angular adjustment, lifter for height control, and hydraulic pump system. Each module operates independently to achieve comprehensive testing capabilities while maintaining manageable system complexity.
Solution Approach 2:
The hollow jack is designed with rotation and elevation capabilities, adding angular and vertical dimensions to the traditional linear tensioning function. This enables the tension meter to approach the anchor rod from multiple angles and positions, significantly expanding the measurement range and adaptability.
2Strength
If conventional tension meters are used, then the device is simple to manufacture, but the load capacity is insufficient for large deformation anchor rods
Solution Approach 1:
The tension meter employs a hydraulic pump system connected to the hollow jack to generate and control high loads. The air-driven hydraulic pump provides sufficient loading capacity for large deformation anchor rods while maintaining operational convenience and reducing manual labor intensity.
3Adaptability or versatility
If conventional tension meters are used, then the operation is straightforward, but the device cannot perform circular pressurization
Solution Approach 1:
The hollow jack is designed as a multi-functional component that can perform both linear tensioning and circular pressurization operations. Combined with the rotation device, it can approach and pressurize the anchor rod from any angle, making the tension meter adaptable to various testing scenarios including circular pressurization requirements.
Solution Approach 2:
The rotation device enables the hollow jack to dynamically adjust its angular position during operation. This dynamic positioning capability allows the tension meter to perform circular pressurization by continuously changing the approach angle, transforming a static device into a dynamically adaptable testing system.
4Adaptability or versatility
If conventional tension meters are used, then the device is simple, but it cannot adapt to large deformation characteristics of soft rock surround
Solution Approach 1:
The addition of rotation and elevation functions to the hollow jack creates a three-dimensional positioning and force application system. This enables the tension meter to accommodate large deformations by approaching and measuring from multiple spatial angles, matching the complex deformation patterns of soft rock surround.
Data Source
AI summary
A tension meter of an anchor rod with constant resistance and large deformation comprises a pull rod and a hollow jack. The meter further includes: a rotation device for controlling the rotation angle of the hollow jack; a lifter for adjusting the height of the hollow jack and the rotation device; a first hydraulic pump for driving the hollow jack, wherein the hollow jack is fixed on the rotation device mounted on the lifter. The meter has a large measurement range and a high load capacity.