Improvement of shock system of hydraulic drill to increase drilling intensification

International Conference on Innovations and Prospects of Development of Mining Machinery and Electrical Engineering 2018

矿业工程;电工学

Iungmeister, D.A.^1 ; Korolev, R.I.^2 ; Karlov, V.A.^1

Saint-Petersburg Mining University, 21 Line of Vasilyevsky Island, Saint-Petersburg 2

199106, Russia^1

Metromash-SPb Organization, Fuchik's Street 4, Saint-Petersburg

192102, Russia^2

关键词: Drilling and blasting operations;    High frequency oscillations;    Operating principles;    Shock pulse;    Shock system;    Transfer coefficient;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/194/3/032006/pdf
DOI  :  10.1088/1755-1315/194/3/032006

来源: IOP

【 摘 要 】

The article deals with features of drilling and blasting operations with the use of hydraulic drills prevailing in the amount of use as drilling heads on drilling (mining) equipment. The device and the operating principle of hydraulic drills are discussed. In order to increase the intensification of drilling, the modernization of hydraulic drills is proposed by using the "shock-worker -striker - shank" shock system, which is characterized by an increase in the transfer coefficient of the shock pulse through the striker, performing high-frequency oscillations (rattling striker) between the shock-worker and the shank. A graph of the dependences of the parameters of the modernized shock system is given and the conditions for the existence of the rattling phenomenon of the striker due to which the drilling productivity is expected to be increased are indicated.