Sandvik DL421-15C for underground mining drilling operation
Sandvik DL421-15C is an electric - hydraulic deep hole drilling rig for underground mines, large-scale mining drilling operation. The trolley is designed for vertical and inclined rows of ring holes, fan-shaped holes and parallel deep holes, and can be used for separate deep hole drilling. The big arm can rotate 360 degrees, so that the trolley is suitable for various types of drilling.
High power hydraulic rock drill
Equipped with HL1560T rock drill, the impact power is 33KW, with independent rotating motor and washing mechanism, and equipped with "borer" to control the contact between bit and rock. This enables the rock drill to achieve excellent drilling performance and longer drilling life. Equipped with anti knock device, it can not only solve the problem of sticking, but also play the role of loose thread, shorten the time of unloading drill pipe, and improve the efficiency of use. All the moving parts in the rock drill are moving in the Bush, and there is no body wear. Therefore, in the whole life of rock drilling rig, there is no need to buy a new rock drill, this one will save hundreds of millions of yuan for the use of the cost of the mine. The standard hole diameter is 89-127mm, and the maximum hole depth is 54 meters.
The deviation rate of drilling is small
Due to the unique type of chassis ground support, strong arm and front and rear top upper and lower support beam, promote the propulsive force of up to 31kN, the use of more conducive to improve the drilling accuracy of ST68 drill pipe, and put into use the angle instrument and automation sector, which greatly improves the accuracy of drilling rig.
Standard borehole diameter 102mm
In the sublevel caving mining with sublevel height of 30m, the hole diameter is 102mm, and the maximum drilling efficiency of each DL421-15C is 135 thousand m/.A.
High automation level
It can realize single row deep hole full automatic drilling (storage machine with automatic change drill pipe function), operation interface Chinese display automatic record, storage, display operation data, equipment operation state, fault alarm lamp. The trolley can automatically load drilling tools and automatically unload drilling tools.
Safe cockpit
Equipped with air conditioning and anti roll over FOPS safety certification ROPS cab rockfall. At the same time, equipped with 2 independent drilling operation units, operators can not only drill holes in the air conditioning cab, but also drill holes outside the driving room.
Since October 2015 officially launched the two phase of the project of Dahongshan and Sandvik DL421-15C, compared with the first phase of the project, two people in each class, three classes every day, each class 8 hours the same work conditions, the average tonnage from the original single blasting a period of 10t to 18t, increased by 80%; footage the number of meters from 300 meters / day increased to 380 meters / day, up 26%.
In addition to the significant improvement in the mining efficiency of the equipment before the DL421-15C, but also for the operator's work environment has brought great changes. Such as: the operating personnel in the cab operation closed, with air conditioning, effectively protect the personal safety of the operating personnel, while also providing a comfortable working environment for operators; modular design, making the discovery and maintenance, fault diagnosis equipment more convenient; highly automatic system, operation more convenient and simple in addition, single row, full automatic fan drilling operations, to some extent reduce the labor intensity.
