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A multi-hole drill

A drill bit and drill pipe technology, applied in the direction of drill pipe, drill pipe, drill tools, etc., can solve the problems of delaying the construction period, stopping work for replacement, easily hindering the drilling operation, etc., and achieve the effect of avoiding interference

Active Publication Date: 2022-07-01
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gap between the drill rods is larger than the width of the rock drill, and a large-diameter drill bit is required to drill holes to maintain the continuity of the hole before slotting, and the energy loss is very large.
Secondly, multiple rock drills use independent impact rotary oil circuit systems, relying on one-to-one hydraulic hoses to deliver compressed air and high-pressure oil to the rock drills. Too many hose connections will not only hinder drilling operations, but are also easily damaged , resulting in downtime and replacement, delaying the construction period

Method used

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  • A multi-hole drill
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Embodiment Construction

[0032] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention may be implemented in many different ways as defined and covered by the claims.

[0033] see Figure 1 to Figure 9, a multi-hole drill, comprising a casing 2, an impact device 1, a rotating mechanism 4, a shank 3, a drill rod 5, a drill bit 6 and a shaping device 7; The central axis is connected, that is, one end of the shank is connected with the drill pipe, the other end of the drill pipe is connected with the drill bit, and the end of the drill pipe and the drill bit is connected with a shaping device; the shaping device includes a mounting plate 7.1, and the mounting plate is an arc-shaped plate , There are a plurality of installation through holes on the arc-shaped plate. The two ends of the installation through-hole are respectively installed to connect the drill pipe and the drill bit. The installation through-hole is p...

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Abstract

The invention provides a multi-hole drill row, comprising a casing, an impact device, a rotating mechanism, a shank, a drill pipe, a drill bit and a shaping device; the device of the present application provides axial impact power to the row drill by arranging a plurality of impact devices. The rotating mechanism provides rotating power to the row of drills to realize the continuous drilling of the tunnel rock mass into grooves; at the same time, a shaping device is installed at the front end of the drill pipe. There are multiple drill teeth, through the impact of the shaping device and the drill teeth, the problem of over-under-digging in the process of drilling and grooving is further solved.

Description

technical field [0001] The invention relates to the technical field of tunnel excavation equipment, in particular to a multi-hole drill. Background technique [0002] In tunnels constructed by drill-and-blast method, due to measurement set-out errors, low drilling accuracy, limitations of blasting technology and geological conditions, drilling equipment often produces over-under-excavation, which not only seriously affects the stability of the tunnel support structure system In addition, due to the increase in the amount of slag and backfill, the construction cost of the tunnel has risen sharply. [0003] In the existing tunnel excavation construction, rock drilling rigs are often used, and multiple rock drills are installed on the rock drilling rig to realize the simultaneous operation of multiple machines and centralized control, which can shorten the drilling operation time and improve the drilling efficiency; drill continuous holes , the adjacent holes interfere with ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B1/26E21B7/00E21B11/00E21B19/24
CPCE21B1/02E21B7/001E21B11/00E21B19/24
Inventor 廖金军张坚易达云甘士瑜祝爽徐震钱垂军蒋海华赵贵生胡及雨伍容
Owner CHINA RAILWAY CONSTR HEAVY IND