Combined type energy-absorbing anti-impact hydraulic stand column and using method thereof

Abstract

The invention relates to a combined type energy-absorbing anti-impact hydraulic stand column and a using method thereof, and belongs to the technical field of coal mine supporting equipment. The hydraulic stand column comprises a cylinder body, a hydraulic piston rod, a safety valve and a combined type energy-absorbing and anti-impact component, the hydraulic piston rod is arranged in the cylinder body, the safety valve is arranged outside the cylinder body, the combined type energy-absorbing and anti-impact component is arranged on the hydraulic piston rod, and the energy-absorbing and anti-impact capacity of the hydraulic stand column is enhanced through triple energy absorption of the combined type energy-absorbing and anti-impact component. The shear thickening fluid is applied to the hydraulic stand column for the first time, the chemical energy absorption effect is achieved through the anti-impact energy absorption characteristic of the shear thickening fluid, meanwhile, the physical energy absorption effect is achieved through interaction energy dissipation of viscosity of the fluid and structural components, the shear energy absorption effect is achieved through a spiral shear type structure, and the three are combined into a whole; therefore, the energy-absorbing and anti-impact capacity of the hydraulic stand column is greatly enhanced, the stability of the energy-absorbing and anti-impact work of the stand column is guaranteed, and meanwhile strong reverse bearing capacity is provided.

Description

technical field [0001] The invention relates to a composite energy-absorbing anti-shock hydraulic column and a method for using the same, belonging to the technical field of coal mine support equipment. Background technique [0002] Rock burst is a typical dynamic disaster encountered in the process of coal mining. Due to its complex mechanism, sudden occurrence and violent destruction, it poses a huge threat to the safe and efficient production of coal mines, and has become an urgent technical problem to be solved in deep green mining. Therefore, the surrounding rock control and anti-scouring technology of rock burst roadway has been the focus of research by scholars at home and abroad. [0003] Hydraulic columns are widely used in current coal mine support because of their strong supporting capacity and self-regulating load function. However, due to its working mechanism, it has a fatal flaw when dynamic disasters such as rock bursts come. The opening time of the safety v...

AI Technical Summary

Problems solved by technology

Both types of energy-absorbing and anti-shock structures achieve the purpose of energy-absorbing and anti-shock structures by compressing and destroying energy-absorbing components, but both have shortcomings. For the first type of chemical energy-absorbing structures, the energy-absorbing effect of existing filling materials needs to be improved, and It cannot be reused, and its bearing capacity is relatively weak; while the physical energy-absorbing components that only rely on structural changes have a single energy-absorbing effect, the energy-absorbing process is unstable, and they do not have adjustable capabilities.

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