Composite Impact Buffer With Adaptive Initial Support Force
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional impact-resistant devices for hydraulic supports struggle to provide initial support force and adaptively adjust to dynamic impact conditions, as hydraulic buffers fail to offer sufficient initial force and mechanical crushing members are limited in providing large support force and cannot be adjusted accordingly.
Innovation Solution
A compound impact-resistant device comprising an inner cylinder, a magnetorheological damper, a spiral valve element, a floating piston, and a spring, connected with a control system that adjusts resistance using a magnetorheological damper coil and pressure sensors to manage impact forces, allowing for self-adaptive adjustment of support force during impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If hydraulic buffers are used for impact resistance, then impact energy absorption is stable, but initial support force is insufficient
Solution Approach 1:
The impact-resistant device is divided into multiple functional segments: a mechanical crushing member (aluminum honeycomb) for initial support and energy absorption, and a hydraulic buffer for stable impact energy absorption. Each segment handles different phases of impact, with the crushing member providing immediate initial support force and the hydraulic buffer managing subsequent energy dissipation.
Solution Approach 2:
The patent combines two different impact resistance mechanisms - mechanical crushing (aluminum honeycomb) and hydraulic buffering - into a single integrated device. The crushing member and hydraulic buffer work together in sequence, with the crushing member providing initial support and the hydraulic buffer handling energy absorption, thereby achieving both sufficient initial support force and stable impact energy absorption.
2Loss of energy
If mechanical crushing members are used for impact resistance, then energy absorption capacity is high, but support force is limited and cannot be adjusted
Solution Approach 1:
The device transitions from a static mechanical crushing member to a dynamic system by incorporating a hydraulic buffer with adjustable parameters. The hydraulic buffer can adapt its resistance characteristics based on impact conditions, allowing the support force to be adjusted dynamically rather than being fixed by the mechanical structure alone.
Solution Approach 2:
The hydraulic buffer allows for parameter changes in the impact resistance system. By adjusting hydraulic parameters (such as orifice size, fluid viscosity, or spring pre-compression), the support force and energy absorption characteristics can be modified to match different impact scenarios, providing adaptability that pure mechanical crushing members cannot achieve.
3Loss of energy
If traditional hydraulic buffers are used, then impact energy is absorbed stably, but initial support force is not provided
Solution Approach 1:
The mechanical crushing member (aluminum honeycomb) performs preliminary action by providing immediate initial support force upon impact. This mechanical component engages first to establish support, before the hydraulic buffer activates to handle the stable energy absorption phase of the impact event.
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 device effectively provides specific initial support force and adapts to dynamic impact conditions by combining the crushing member, magnetorheological damper, and hydraulic buffer to absorb energy, ensuring reliable protection against impacts while monitoring pressure changes for real-time adjustments.
Implementation Method 1
a magnetorheological damper cylinder internally provided with a piston rod... an electromagnetic coil is wound around the piston rod... a portion below the guide disk is filled with magnetorheological fluid
Implementation Method 2
a reset spring sleeves a portion, between the bump head and the upper end cover, of the piston rod
Implementation Method 3
a portion below the spiral valve element is filled with hydraulic oil
Data Source
AI summary
Disclosed are a compound impact-resistant device and an application thereof. The compound impact-resistant device includes an inner cylinder, a first pressure sensor and an outer cylinder; an inner cavity of the inner cylinder is connected to a magnetorheological damper, a spiral valve element, a floating piston and a spring from bottom to top; and the outer cylinder is connected to a piston rod, a bottom end of the piston rod penetrates a top of the inner cylinder, the spring and the floating piston to be connected to the spiral valve element, and a portion below the spiral valve element is filled with hydraulic oil. The compound impact-resistant device can provide specific initial support force and achieve active self-adaptation to dynamic impact, thus solving the problems that traditional hydraulic buffers cannot provide initial support force and traditional mechanical crushing members have difficulty in providing large support force.