Dynamic analysis of a hydraulic motor lifting auxiliary beam of monorail crane

• Published in: Journal of physics. Conference series Vol. 2790; no. 1; pp. 12008 - 12014
• Main Authors: Liu, Y L, Lu, J L, Chu, L L, Yu, C L
• Format: Journal Article
• Language: English
• Published: Bristol IOP Publishing 01.07.2024
• Subjects: Amplitudes; Coal mines; Coal mining; Coal transport; Cranes; displacement; dynamic analysis; Dynamic loads; Dynamic models; Finite element method; Frequency variation; Hoisting; Hydraulic motors; lifting auxiliary beam; Monorail crane; Monorails
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/2790/1/012008

Abstract Monorail crane that is an important class of auxiliary transportation equipment in coal mine. It works on a single hanging track fixed above the coal mine roadway to transport materials, machines, people, etc. Lifting auxiliary beam is the main part of the lifting beam which is used to complete the lifting and transport operations. In the application process, the lifting auxiliary beam is bore many types of loads such as discontinuous loading, frequent starting and braking etc. It complicates the dynamic performance that directly affects the safety and the lifting operation stability. By using finite element method, a dynamic model of the lifting auxiliary beam is established to study the variation laws of dynamic load, frequency, amplitude, etc. Furthermore, three loading conditions are defined in the model. They are static loading, slow loading and fast loading, considering the lifting operation time. The numerical simulation results show that the maximum displacement of the fast loading condition is 20% to 23% higher than that under the static loading condition. Moreover, under the fast loading condition, the largest displacement amplitude occurs in the middle part of the lifting auxiliary beam and it decreases gradually towards the ends.