Abstract
In this study, we obtain overwind buffer distance by using the Lagrange equation to establish the two- degrees-of-freedom mathematical model with vertical shaft lifting system in rolling process. Design of a buffer device which is composed of a hydraulic energy absorption and strip plastic deformation energy absorbing and analyze its working principle with mechanical and hydraulic system. Analysis of the overwind buffer time and buffer distance with loaded full overwind and no-load speed by using ADAMS and AMESim to build mechanical hydraulic combined simulation model of hydraulic steel-belt overwind buffer device. The simulation results show that: buffer time is 0.67 sec and buffer distance is 0.38 m with loaded full overwind; buffer time is 0.523 sec and buffer distance is 0.05 m with no-load speed overwind. The design of Hydraulic steel-belt overwind buffer device conforms with the requirements of safety regulation in coal mine.
Highlights
With the extensive use of vertical shaft hoisting system in the mine hoist system, the vertical shaft hoisting system has became the key to the efficient and safe production of the mine (Jiang, 2008)
The vertical shaft hoisting system has a variety of electrical protection and backup protection, overwind accidents still happen frequently due to high container speed and certain restrictions in braking deceleration when overwind
Along with the introduction of steel-belt type plastic deformation absorption, plastic deformation absorption overwind buffer device has widely applied in various mines
Summary
With the extensive use of vertical shaft hoisting system in the mine hoist system, the vertical shaft hoisting system has became the key to the efficient and safe production of the mine (Jiang, 2008). Literature 8 (Jin-Hua et al, 2010) has a stress analysis of vertical shaft hoisting anti-overwind and anti-overdischarge buffer supporting cage devices. Literature 9 (Fu-Zhen et al, 2011; Yu-Jin, 2008) adopts COSMOS Motion to have a simulation analysis of hoisting over rolling buffering devices. Along with the introduction of steel-belt type plastic deformation absorption, plastic deformation absorption overwind buffer device has widely applied in various mines. Based on plastic deformation absorption overwind buffer device, this study studies a hydraulic steel-belt overwind buffer device and conducts a mechanicalhydraulic liquid joint simulation test for the buffer process of the device (Yong-Zhou and Ji-Sheng, 2009; Yang-Rui et al, 2012)
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