CN205277311U

CN205277311U - Compound self -drilling stock bores

Info

Publication number: CN205277311U
Application number: CN201620060566.8U
Authority: CN
Inventors: 田景波; 黄国权
Original assignee: Guizhou Zhongzuan Machinery Equipment Co Ltd
Current assignee: Guizhou Zhongzuan Machinery Equipment Co Ltd
Priority date: 2016-01-22
Filing date: 2016-01-22
Publication date: 2016-06-01
Anticipated expiration: 2026-01-22

Abstract

The utility model discloses a compound self -drilling stock bores belongs to the self -drilling stock and bores, aim at providing one kind and creep into the self -drilling stock brill efficient, that the boring direction is difficult to bias, long service life. It including the trousers bodies, the starter that is located this trousers body front end that have the centre bore, be located this starter below and the equipartition is in four reaming wings of the external periphery of trousers, four cutting edges of starter are the cross and distribute, rake face between the adjacent cutting edge forms the V font slag runner of downward sloping, each the bottom of slag runner have with the head wash port of centre bore intercommunication, reaming wing (4) are piece formula trapezium structure, and the contained angle between its reaming sword (5) and the trousers body (6) axis is the acute angle. The utility model has the advantages of creep into efficient, good, difficult wearing and tearing of drilling guidance quality, with low costs, a compound self -drilling stock bores.

Description

Compound automatic anchor pole bores

Technical field

The utility model relates to a kind of automatic anchor pole and bores, and particularly relates to a kind of compound automatic anchor pole and bores.

Background technology

At present, the anchor bit widely used, mostly is cruciform, ball profile of tooth, four structures such as wing, when run into more complicated stratal configuration or when holing deep, there is the defects such as drilling efficiency is lower, Hole deviation is big. For self-drilling type cross anchor bit, the cutting edge of cross bit is positioned at drill bit top, and it is crosswise distribution that four cutting edges are in a plane, easily occurs boring phenomenon that is inclined and that swing in drilling process; Cross bit ash pit is less in addition, row's slag is not smooth, exacerbates drill bit and the resistance of hole wall ground when creeping into, not only causes premature bit failure, and affect drilling depth. For this reason, application number is that " 201510594546.9 ", name are called that " a kind of double-layer cross automatic anchor pole drill bit " discloses a kind of automatic anchor pole being composited by cruciform pilot guide bit and four wing reaming bits and bore; Although this patent application efficiently solves, drill bit is easy to wear, drilling efficiency is low, the boring direction easily defect such as deviation, but owing to water hole has been offered in the central position at pilot guide bit, therefore easily being blocked by rock slag and cause slip casting difficulty, drilling efficiency is also undesirable.

Summary of the invention

For the above-mentioned defect existed in prior art, the utility model aims to provide a kind of drilling efficiency height, boring direction is not easy deviation, the compound automatic anchor pole of long service life bores.

In order to realize above-mentioned purpose, the utility model is by the following technical solutions: it comprises the trousers body with centre hole, is positioned at the pilot guide bit of this trousers body front end, is positioned at below this pilot guide bit and is distributed on four reaming wings of described trousers body outer circumference surface, four cutting edges of described pilot guide bit are crossing distribution, rake face between described adjacent cutting sword forms the V-shaped ash pit of inclination downwards, and the head water vent being connected with described centre hole is arranged at the bottom of each described ash pit; Reaming wing is chip ladder structure, and the angle between its reaming sword and trousers body axis is acute angle.

Having the side water vent being connected with centre hole on reaming wing, the angle between the axis of this side water vent and trousers body axis is acute angle; Side water vent is two, and two sides water vent is uniformly distributed centered by the axis of trousers body.

Compared with the prior art, the utility model is owing to have employed technique scheme, the reaming sword of original level has been changed into the sword that inclines that the angle between trousers body axis is acute angle by the basis of original structure, because this reducing the resistance suffered by reaming wing, not only can increase substantially drilling efficiency, and but also can reduce and cause because drill bit resistance is excessive drill bit to swing thus cause drilling direction that the phenomenon of deviation occurs, and drill bit can also have been avoided to wear and tear fast simultaneously. In addition, owing to eliminating upper water vent, a side water vent that adds two, therefore can effectively improve slip casting effect.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the A A sectional view in Fig. 1;

Fig. 3 is the vertical view of Fig. 1;

Fig. 4 is that the B B in Fig. 3 cuts open the view after being rotated counterclockwise 90o.

In figure: cutting edge 1, rake face 2, pilot guide bit 3, reaming wing 4, reaming sword 5, trousers body 6, side water vent 7, head water vent 8, centre hole 9, internal thread 10.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:

As shown in figures 1-4: pilot guide bit 3 is positioned at trousers body 6 front end with centre hole 9, the lower section of pilot guide bit 3 is four the reaming wings 4 being distributed on trousers body 6 outer circumference surface. Four cutting edges 1 of pilot guide bit 3 are in crossing distribution, rake face 2 between adjacent cutting sword 1 forms the V-shaped ash pit of inclination downwards, the head water vent 8 being connected with centre hole 9 is arranged at the bottom of each described ash pit, and centre hole 9 is connected with the internal thread 10 of trousers body 6; Reaming wing 4 is in chip ladder structure, and the angle between its reaming sword 5 and trousers body 6 axis is acute angle.

For the ease of slip casting, reaming wing 4 having the side water vent 7 being connected with centre hole 9, the angle between the axis of this side water vent and trousers body 6 axis is acute angle.

In order to ensure that slip casting is even, side water vent 7 is two, and two sides water vent 7 is uniformly distributed centered by the axis of trousers body 6.

Claims

1. a compound automatic anchor pole bores, comprise the trousers body with centre hole, it be positioned at the pilot guide bit of this trousers body front end, be positioned at below this pilot guide bit and be distributed on four reaming wings of described trousers body outer circumference surface, four cutting edges of described pilot guide bit are crossing distribution, rake face between described adjacent cutting sword forms the V-shaped ash pit of inclination downwards, and the head water vent being connected with described centre hole is arranged at the bottom of each described ash pit; It is characterized in that: reaming wing (4) is in chip ladder structure, and the angle between its reaming sword (5) and trousers body (6) axis is acute angle.

2. compound automatic anchor pole according to claim 1 bores, it is characterised in that: having the side water vent (7) being connected with centre hole (9) on reaming wing (4), the angle between the axis of this side water vent and trousers body (6) axis is acute angle.

3. compound automatic anchor pole according to claim 1 bores, it is characterised in that: side water vent (7) is two, and two sides water vent (7) is uniformly distributed centered by the axis of trousers body (6).