CN201391233Y

CN201391233Y - Raise boring bit

Info

Publication number: CN201391233Y
Application number: CN200920107627U
Authority: CN
Inventors: 张宽宝; 刘泽敏; 史雁飞; 马绍龙; 余咏; 马光群; 徐海祥; 李健; 田平; 普中贵; 张开新; 陈继先; 张政权; 杨家喜; 王江涛; 万福贵; 金长文; 刘洪卫; 杨君辉; 王萌
Original assignee: Sinohydro Bureau 14 Co Ltd; Sinohydro Bureau 1 Co Ltd
Current assignee: Sinohydro Bureau 14 Co Ltd; Sinohydro Bureau 1 Co Ltd
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-01-27
Anticipated expiration: 2019-04-30

Abstract

The utility model discloses a raise boring bit, which comprises a bit, five lateral disc cutters for broaching and a central disc cutter. The raise boring bit is characterized in that the five lateral disc cutters are uniformly distributed on the outer edge of the periphery of the bit, and the central disc cutter is arranged on one side of the center of the bit. Compared with the prior art, the raise boring bit has the advantages that the broaching disc cutters of the raise boring bit can be stressed uniformly, and constructors do not need to construct on an excavation face, thereby increasing construction safety of vertical shafts and inclined shafts, guaranteeing life safety of the constructors and achieving fine social benefits and higher practical value. In addition, the raise boring bit is simple in operation, easy to be mastered by the constructors, simple in process and high in construction efficiency, accelerates construction progress rate and reduces construction cost.

Description

A kind of anti-well drill bit

Technical field

The utility model relates to a kind of anti-well drill bit, belongs to the drilling machinery apparatus field.

Background technology

At present, for satisfying Hydraulic and Hydro-Power Engineering, the designing requirement on the structure physical function under different condition of coal, ore deposit industry, underground vertical shaft type gate shaft, surge shaft, open air exhaust perpendicular, inclined shaft and vertical and inclined shaft pressure pipeline etc. need be set in Hydraulic and Hydro-Power Engineering, according to statistics to the large hydropower station of 68 different dam types of China and different exploitation patterns, wherein there is the power station of underground vertical shaft, inclined shaft just to have 28, account for 41%, and all there are several vertical shafts, inclined shaft in every power station, well depth all surpasses more than the 90m, and the pressure at right angle pipeline depth reaches more than the 300m.

The anti-well drill bit of prior art is made up of the reaming dise knife of six symmetries at present, wherein two being the center dise knife that is positioned at the bit central both sides, other four for being positioned at the outer peripheral limit of drill bit dise knife, and four are symmetrical distribution to the limit dise knife, and two are symmetrical distribution to the center dise knife in the bit central both sides.In the process of actual reaming drilling well, anti-well drill bit four bigger, frayed easily reaming limit dise knife reaming load needs often to change, and other two is less center dise knife load, do not need replacing substantially.Because the inhomogeneous outer peripheral limit of the drill bit dise knife that causes of load is changed frequently, reduce pore-creating speed like this, made the center dise knife of the inside reaming defectives such as idle occur, caused the waste of instrument and the raising of cost.

The utility model content

The purpose of this utility model is in order to overcome the weak point of above-mentioned prior art, a kind of anti-well drill bit to be provided.

The technical solution of the utility model is: six in the anti-well drill bit is arranged on the drill bit outward flange to four in the reaming dise knife to the limit dise knife, makes it be symmetrical distribution; In the anti-well drill bit six is arranged on the outward flange of drill bit to two in the reaming dise knife to one in the dise knife of center to dise knife, another center dise knife is arranged on a side of bit central.

A kind of anti-well drill bit of the utility model, comprise: drill bit, five is being used for the limit dise knife and of reaming the center dise knife, it is characterized in that: described five are distributed in the circumferential outer edges of drill bit symmetrically and evenly to the limit dise knife, and other one is located at a side of bit central to the spider cutter.

The utility model has following advantage with respect to prior art: can make the reaming dise knife of anti-well drill bit evenly stressed, do not need the constructor to excavating surface construction, improved the safety of vertical shaft, slope construction, guaranteed constructor's life security, have good social benefit and stronger practical value, the utility model is simple to operate, and the constructor is easy to grasp; Technology is easy, and the efficiency of construction height has been accelerated construction speed, reduces construction cost.

Description of drawings

Fig. 1 is the structural representation of a kind of anti-well drill bit described in the utility model.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done further detailed introduction, as shown in Figure 1, a kind of anti-well drill bit of the utility model, comprise: drill bit 7, top dise knife 1, upper left limit dise knife 2, left lower side dise knife 3, top right-hand side dise knife 4, limit, bottom right dise knife 5 and center dise knife 6, it is characterized in that: described top dise knife 1, upper left limit dise knife 2, left lower side dise knife 3, top right-hand side dise knife 4, limit, bottom right dise knife 5 are distributed in the circumferential outer edges of drill bit 7 symmetrically and evenly, and described center dise knife 6 is located at a side of bit central 8.

The utility model is achieved by following technological process: it may further comprise the steps: (1) pilot shaft central point unwrapping wire; (2) cleaning of main frame concrete foundation and concreting; (3) the in place and main frame leveling of raise boring machine; (4) the second stage of concrete is built; (5) Φ 216mm guide hole forward creeps into; (6) guide hole connects the back and removes Φ 216mm drill bit; (7) also reverse expansion of Φ 1.4m drill bit being installed digs; (8) equipment is removed.

The utility model is not limited to the foregoing description; to those skilled in the art, any improvement that the foregoing description of the present utility model is made or change can not exceed the embodiment of the present utility model that only illustrates by way of example and the protection domain of claims.

Claims

1. anti-well drill bit, comprise: drill bit (7), top dise knife (1), upper left limit dise knife (2), left lower side dise knife (3), top right-hand side dise knife (4), limit, bottom right dise knife (5) and center dise knife (6), it is characterized in that: described top dise knife (1), upper left limit dise knife (2), left lower side dise knife (3), top right-hand side dise knife (4), limit, bottom right dise knife (5) are distributed in the circumferential outer edges of drill bit (7) symmetrically and evenly, and described center dise knife (6) is located at a side of bit central (8).