Tensionable pulverized coal collector for rock burst coal mine roadway drilling method

The utility model discloses an expandable pulverized coal collector for a rock burst coal mine roadway drilling method, which comprises a reducing bent neck, the reducing bent neck is a transition device for collecting pulverized coal, the reducing bent neck is connected with a wedging pipe, two connecting pieces are arranged on the reducing bent neck, and the connecting pieces are connected with an expanding device. According to the utility model, the variable-diameter bent neck is fixed on the coal body through the tensioning bolt of the tensioning device to prevent looseness, and the wedge opening can be firmly fixed all the time through continuous tensioning, so that the mixing of sundries and the loss of pulverized coal are effectively avoided, and the accuracy of the amount of the pulverized coal is ensured. 本实用新型公开了冲击地压煤矿巷道钻屑法用可涨紧煤粉收集器，包括变径弯脖，变径弯脖为煤粉收集的过度装置，变径弯脖连接锲入管，变径弯脖上设置两个连接件，连接件连接涨紧装置。本实用新型通过涨紧装置的涨紧螺栓，将变径弯脖固定在煤体上，防止松动，通过不断的涨紧，确保锲口能够一直牢固固定，有效的避免杂物混入及煤粉遗失，确保煤粉量的准确性。