Electromagnetic Unloading Device for True Triaxial Testing
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Solution Overview
Problem
Current rock mechanics testing machines with rapid unloading functions rely on oil pressure, leading to resource waste, environmental pollution, high space occupancy, and safety risks due to the large impact on oil pipelines and hydraulic stations.
Innovation Solution
A one-way rapid electromagnetic unloading device integrated into a true triaxial testing machine, utilizing electromagnetic forces generated by coaxially arranged first and second electromagnets with a restraining disc, providing fast and controllable unloading with reduced environmental impact and space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If oil pressure is used to provide unloading power, then rapid unloading speed can be achieved, but resource waste and environmental pollution occur
Solution Approach 1:
The patent replaces the oil pressure hydraulic system with an electromagnetic system. The electromagnetic unloading device uses electromagnetic force generated by electromagnets to directly push the piston rod, eliminating the need for hydraulic oil and associated infrastructure. This substitution resolves the contradiction by achieving rapid unloading through electromagnetic actuation while completely avoiding oil waste and environmental pollution.
2Speed
If oil pressure is increased to achieve rapid unloading, then unloading speed improves, but impact on oil pipeline increases and safety risks arise
Solution Approach 1:
The patent eliminates the high-pressure oil pipeline system by using direct electromagnetic actuation. The electromagnets generate force electrically without requiring high-pressure fluid transmission, thereby removing the safety hazards associated with high-pressure oil pipelines while maintaining rapid unloading capability through controlled electromagnetic force application.
3Speed
If a supporting hydraulic station is added to provide unloading power, then rapid unloading function is achieved, but space occupancy and costs increase
Solution Approach 1:
The patent replaces the bulky hydraulic station with a compact electromagnetic unloading device that can be integrated directly into the testing machine frame. The electromagnetic system requires no large reservoirs, pumps, or piping infrastructure, achieving rapid unloading functionality in a space-efficient manner that reduces both volume and installation complexity.
4Object-affected harmful factors
If electromagnetic force is used to provide unloading power, then environmental protection and space saving are achieved, but device complexity may increase
Solution Approach 1:
The patent integrates the electromagnetic unloading device directly into the existing testing machine frame structure. The electromagnets are mounted on the frame, sharing the same structural support and spatial arrangement as other testing components. This merging approach minimizes additional device complexity by utilizing existing structural elements rather than adding separate, independent systems.
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 electromagnetic unloading device offers rapid response, controllable unloading rates, a simple structure, and environmental protection, effectively addressing the limitations of oil pressure-based systems while meeting various unloading test requirements.
Implementation Method 1
uses electromagnetic force to provide the unloading power
Data Source
AI summary
The invention relates to a one-way rapid electromagnetic unloading device suitable for a true triaxial testing machine, comprising a first electromagnet, a second electromagnet, a first electromagnet mounting base, a second electromagnet mounting base and a restraining disc. A frame of the true triaxial testing machine is provided with a mounting hole for the unloading device. The first electromagnet mounting base is fixedly mounted in the mounting hole for the unloading device, and the first electromagnet is fixedly mounted on the first electromagnet mounting base. The restraining disc is fixedly mounted at an opening of the mounting hole for the unloading device, and the second electromagnet mounting base is located between the restraining disc and the first electromagnet. The second electromagnet is fixedly mounted on the second electromagnet mounting base and is opposite to the first electromagnet.