Design and Performance Analysis of a Coal Bed Gas Drainage Machine Based on Incomplete Non-Circular Gears

Guiyun Xu, Dezheng Hua, Weijun Dai and Xiaoguang Zhang
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Guiyun Xu: School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China
Dezheng Hua: School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China
Weijun Dai: School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China
Xiaoguang Zhang: School of Mechanical and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China

Energies, 2017, vol. 10, issue 12, 1-19

Abstract: In order to solve the problem of reciprocating motion in no beam supported mining machines, putting energy saving as a starting point in Coal Bed Methane (CBM) exploitation, this paper designs a completely non-circular gear automatic reversing vertical drainage machine based on the theory of non-circular gear transmission. In the field of CBM exploitation, the use of non-circular gears is an attempt at an innovation. First of all, according to the working conditions of the pump and use requirements, a scheme is established whereby the one-way rotary motion of the motor is changed into reciprocating motion so that it could drive the oil pumping rod to achieve the upper and lower mining. Secondly, this paper has designed a new type non-circular gear reversing box as the core component to replace the traditional four beam linkage mechanism and also provides elaborate calculations. Finally, the movement simulation of the non-circular gear reversing gear system is completed. Comparing the motion simulation results with the theoretical ones, the correctness of our theoretical analysis can be verified. Compared with the traditional devices, the new coal seam gas drainage machine model design has nearly 11% higher efficiency, which has obvious energy saving effects and reduces the cost of mining coal seam gas.

Keywords: coal bed gas; non-beam supported mining machine; energy efficient; incomplete non-circular gear; automatic reversing (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
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