Drill bit for raise boring machine

Abstract

The invention discloses a drill bit for a raise boring machine. The drill bit comprises a cutter plate, cutter bases, connecting shafts, hobbing cutters, supporting rods and supporting rotation assemblies. The cutter bases can rotate on connecting balls at the upper ends of the supporting rods, and in order to increase the stability that the cutter bases rotate according to a rock-breaking surface, the supporting rotation assemblies are added; the upper ends of telescoping sliding rods are slidably installed in connecting cylinders, and the lower ends of the telescoping sliding rods are slidably clamped into arc-shaped clamping sliding rails at the upper ends of connecting blocks through balls. In this way, the supporting rotation assemblies can achieve a connection stabilizing function and further achieve a guide rotation effect; the structural design is very smart. According to the drill bit, the balance of the cutter bases can be controlled by using driving elastomers in driving grooves, and the aim of stabilizing the structure is achieved.

Description

technical field [0001] The invention relates to a raising drilling machine, in particular to a drill bit for a floating raising drilling machine. Background technique [0002] At present, raise drilling rigs are mainly used in industries such as vertical shafts, inclined shafts, surge shafts, ventilation shafts and drainage shafts in hydropower projects, ventilation shafts in railway construction, and mine slag shafts. The drill bit in the raise drilling rig is the most important part of the whole mechanism. Generally, multiple hobs are fixed on the drill bit, and the external rock is broken through multiple hobs. The distribution and structure of the hobs have a great influence on the efficiency and stability of rock breaking. It has a great impact. The outer surface of the existing hob and the contact surface of the rock often do not match, resulting in a part of the hob not being fully utilized, which in turn leads to low rock breaking efficiency and high energy consumpti...

AI Technical Summary

Problems solved by technology

The drill bit in the raise drilling rig is the most important part of the whole mechanism. Generally, multiple hobs are fixed on the drill bit, and the external rock is broken through multiple hobs. The distribution and structure of the hobs have a great influence on the efficiency and stability of rock breaking. It has a great impact. The outer surface of the existing hob and the contact surface of the rock often do not match, resulting in a part of the hob not being fully utilized, which in turn leads to low rock breaking efficiency and high energy consumption costs. How to use the hob The anastomosis of the outer surface and the broken rock surface has become the key point of the disclosure of the present invention

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