MODEL TESTS OF LONGWALL SHEARER WITH STRING FEED SYSTEM
MODEL TESTS OF LONGWALL SHEARER WITH STRING FEED SYSTEM
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DOI：
10.24425/118885
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发表时间：
2018-01-01
影响因子：
1.2
通讯作者：
Boloz, Lukasz
中科院分区：
文献类型：
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作者：
Boloz, Lukasz
本文涉及带串给料系统的长壁采煤机模型试验。引言概述了薄煤层特别是硬煤层的开采问题，并简要介绍了用于开采薄煤层特别是硬煤层的单机采煤机的构造和操作技术。提出了采用这种给料系统的长壁采煤机建模问题，以及作者的长壁整体采煤机的物理和数学模型。然后，针对假定的参数，对长壁采煤机和管柱给料系统的动力学进行了模型试验。对墙高范围为 1.0 m 至 1.6 m、长度范围为 180 m 至 300 m 并考虑到所应用链条的四个尺寸进行了全面的动态测试。结果，获得了有关长壁采煤机的运动学、沿壁进给、以及与特定轴和特定施工节点载荷相关的平移和旋转的大量信息。最重要的部分是模型试验的结果，连同其解释，可以验证和优化结构以及给料机驱动器和采煤机机身的功率选择。
This article concerns model tests of longwall shearer with string feed system. The introduction outlined the problem of exploitation of thin seams, in particular hard coal seams, and briefly described the construction and operation technology of a single-unit shearer with a string feed system for their exploitation. The problem of modeling of longwall machines with such a feed system was presented, as well as the author's physical and mathematical model of a longwall unitary shearer. Then, for the assumed parameters, model tests were carried out on the dynamics of the longwall shearer together with the string feed system. Comprehensive dynamic tests were carried out for the wall height range from 1.0 m to 1.6 m, length from 180 m to 300 m and taking into account four dimensions of the applied chain. As a result, a number of information was obtained concerning the kinematics of the longwall shearer, its feed along the wall, as well as translations and rotation in relation to particular axes and loadings of particular construction nodes. The most important part are the results of model tests, which together with their interpretation enable verification and optimization of the construction as well as the selection of power of feeder drives and shearer body.