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In Top Hammer drilling systems, instead of the hammer sinking into the drilling pit, it is placed above the pit and on the ground, and the drilling operation is performed through a drilling rod that is connected to the tip of the head and sinks into the pit.
It is recalled that the force of the hammer is transmitted through Shang and then from the bush to the rod and finally to the head.
Due to the way it works in Iran's mines and the high success of the D.T.H system, the disadvantages can be enumerated for the Top Hammer system, which are:
• Energy loss in the rod
• Drilling path deviation
• Drilling depth limit (maximum 10 meters)
• Drilling diameter limit (used in small diameters)
• High price of wagon drills and hammers
But there is an advantage to this method, which is to advance further in the 76 mm diameter range
Daqiq Sanat Company, in line with its professional duty to cover the maximum needs of the mines, currently has a wide range of items related to the Top Hammer drilling method in its product portfolio.
The main of these consumables except hammers are:
• Head • Rod • Shang • Bush and Transform
High hammer drilling is mainly done with two systems R or T. The difference between R and T systems is in the type of teeth and the step length of their threads. In such a way that they use the system (32 and 38) for low to medium diameters and the system (38 to 51) for medium to large diameters.
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