TUBE FEEDING DEVICE FOR USE IN CHARGING SHOTHOLES WITH EXPLOSIVE THROUGH PE OR TUBE

摘要

A tube feeding device for charging shotholes with explosive which includes a feed tube and two or more reciprocable gripping devices for advancing the feed tube. Each gripping device is arranged to grip the tube during its stroke in the desired direction of advancement and the reciprocating cycles of the different gripping devices are out of phase with one another so that whilst the tube is being advanced by one gripping device another is affecting a return stroke.