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胶带拉紧装置是煤矿井下胶带式输送机不可缺少的重要组成部分，对输送机的安全运行及使用寿命至关重要。胶带输送机一般采用绞车或重锤拉紧。前者属定期张紧装置，而胶带的张紧程度往往与操作者的经验有关，且直接受胶带输送机冲击载荷的影响，故绞车拉紧装置对于输送机的安全
Belt tensioning device is an indispensable and important part of belt conveyor in coal mine, which is very important to the safe operation and service life of conveyor. Belt conveyors are typically tensioned by winches or weights. The former is a regular tensioning device, and the tension of the tape is often related to the operator’s experience, and is directly affected by the belt conveyor impact load, so the winch tensioning device for conveyor safety