Late Pleistocene sedimentary features and the palaeoclimatic background in Hongsibao Basin

Authors

LI Zhenhong, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
CUI Jiawei, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
LI Chaozhu, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
JIANG Boyu, Xi'an Branch, China Petroleum Materials Company Limited, Xi'an 710018, China
HUANG Ting, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China; Key Laboratory of Paleomagnetism and Tectonic Reconstruction of Ministry of Natural Resources, Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China

Abstract

The chuck is an important part of the coal mine tunnel drilling rig. The performance of the chuck directly affects the efficiency and quality of drilling. Aiming at the problems of the rubber cylinder hydraulic chuck. a new radial piston hydraulic chuck is studied. The objective of this paper is to devise a new radial piston hydraulic chuck instead of rubber-sleeve hydraulic chuck. Then, the motion mathematical model of radial piston hydraulic chuck was established based on the radial piston chuck clamping and loosening of system structure and working principle. At the same time, a dynamic co-simulation of chuck hydraulic control and mechanical system was made under the AMESim condition. According to the multi machine coupling model, the response and the clamping force characteristics of the clamping system were analyzed in detail, and the test bench was set up for verification. The research results show that the component saucer reed features of the radial chuck key have bigger influence on the system characteristics. By optimizing the performance parameters of the disc spring, a set of key parameters is obtained. The clamping time of radial chuck is 0.325 s, similar to the clamping time of rubber-sleeve chuck 0.325 s, and the release time is 0.275 s, close to the release time of rubber-sleeve chuck 0.300 s. In other words, it can be interchangeable with the rubber sleeve hydraulic chuck to meet the functional requirements of the drilling rig .Beside, the simulation results are consistent with the experimental results. This proves the radial chuck model is accurate. The results of this study will provide theoretical basis for the series design and improvement of new radial piston chuck.

Keywords

radial piston chuck, response characteristics, clamping force characteristics, mathematical model, AMESim

DOI

10.3969/j.issn.1001-1986.2020.06.031

Recommended Citation

LI Zhenhong, CUI Jiawei, LI Chaozhu, et al. (2020) "Late Pleistocene sedimentary features and the palaeoclimatic background in Hongsibao Basin," Coal Geology & Exploration: Vol. 48: Iss. 6, Article 32.
DOI: 10.3969/j.issn.1001-1986.2020.06.031
Available at: https://cge.researchcommons.org/journal/vol48/iss6/32

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