Drilling device used for ground deep hole blasting

Abstract

The invention relates to a drilling device used for ground deep hole blasting. The drilling device comprises a fixed platform, a sliding seat, a drilling machine, a screw rod, a drill bit and an auxiliary air cylinder. A hinge head is arranged on one side of the sliding seat. The sliding seat is hinged to the fixed platform through the hinge head. An auxiliary air cylinder is connected between thesliding seat and the fixed platform. The pitch angle of the sliding seat is adjusted through the auxiliary air cylinder. The drilling machine is installed on the sliding seat and can move verticallyalong the sliding seat. An output shaft of the drilling machine is connected with the screw rod, and the drill bit is fixed to the tail end of the screw rod. The diameter of the screw rod is smaller than the diameter of the drill bit, and multiple fixed bearings are coaxially arranged on the screw rod in the axial direction in sequence. At least two wheel assemblies which can stretch and contractare symmetrically arranged on the outer ring of each fixed bearing in the radial direction. The wheel assemblies can contract or be bounced out in the radial direction of the fixed bearings under theexternal force effect, and the diameter of the outer ring defined by the wheel assemblies is larger than the diameter of the drill bit under the bounced-out state. By means of the drilling device usedfor ground deep hole blasting, the drill bit swing problem caused by the torque of the screw rod in the drill bit rotating process can be avoided, and therefore it is ensured that the drilling standard is more accurate.

Description

technical field [0001] The invention relates to the field of blasting construction, in particular to a drilling device for ground deep hole blasting. Background technique [0002] Nowadays, the development of underground tunnels and underground spaces is in a boom period. Shield construction technology is now used as the main construction method. Due to regional differences in the shield construction process, there may be single strata, composite strata, and special strata during shield construction. Type stratum etc. Before using the shield machine to start construction, it is necessary to do geological exploration in advance to clarify the existence range of boulders, the strength of boulders, and the positional relationship with the surrounding environment of the tunnel. After the treatment, shield excavation is adopted, and during the excavation process, the tunnel is opened and the tool is changed according to the excavation situation. Through detailed exploration and...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a drilling device for ground deep hole blasting, which can be used to improve the drill bit swing problem caused by the torque during the transmission process due to the excessive length of the screw rod during the drilling process of the existing drilling rig , so as to improve the accuracy of drilling and make it more in line with design standards

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