CN203223178U

CN203223178U - Mud rock sharp-tooth concave drag type bit

Info

Publication number: CN203223178U
Application number: CN 201320121510
Authority: CN
Inventors: 李强
Original assignee: FUXINSHI JINGLI CHAOYING GONGJU Ltd
Current assignee: FUXINSHI JINGLI CHAOYING GONGJU Ltd
Priority date: 2013-03-18
Filing date: 2013-03-18
Publication date: 2013-10-02
Anticipated expiration: 2023-03-18

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a mud rock sharp-tooth concave drag type bit. The mud rock sharp-tooth concave drag type bit comprises a bit body and three cutting wings which are uniformly distributed at the top end of the bit body, wherein the upper surfaces of the cutting wings are provided with a plurality of composite pieces, the inner ends of the three cutting wings are connected, and a concave part is formed by the composite pieces which are arranged at the inner ends of the three cutting wings. The mud rock sharp-tooth concave drag type bit disclosed by the utility model is reasonable in setting and has the advantages of no deviation drilling, no slipping, quick penetration rate, high working efficiency and the like.

Description

Mud stone pointed tooth indent drag bit

Technical field

The utility model relates to the drilling equipment technical field, particularly a kind of mud stone pointed tooth indent drag bit.

Background technology

Drill bit is one of common drilling equipment, and its design feature directly determines to drill the height of operating efficiency.Existing drill bit comprises bit body, be uniformly distributed in three cutting wings on the bit body top end face, be provided with some circular composite sheet from upper surface from an end to the other end on the cutting wing, three cutting wing the inners link together the integrally formed projection of three circular composite sheet of its corresponding position.Arrange like this, have following deficiency and defective: 1, be fit to soft rock and creep into, be not suitable for mud stone and creep into, greatly limited its application and range of application; 2, three integrally formed projectioies of garden shape composite sheet are crept into inclined to one side hole, less stable easily during cutting; 3, circular composite sheet runs into mud stone and skids easily, has the problem of drilling depth difficulty, like this operating efficiency of influence probing.Therefore be necessary existing drill bit structure is improved, to improve the operating efficiency of drill bit.

The utility model content

The purpose of this utility model is at the defective of prior art and deficiency, provides a kind of simple in structure, reasonable in design, and stability is high, and penetration rate is fast, the mud stone pointed tooth indent drag bit of high efficiency.

For achieving the above object, the technical solution adopted in the utility model is:

Mud stone pointed tooth indent drag bit described in the utility model, comprise bit body, be uniformly distributed in three cutting wings on bit body top, described cutting wing upper surface is arranged and is provided with some composite sheet, described three inner connections of the cutting wing, form recess between the composite sheet at described three inner places of the cutting wing.

Further, the composite sheet at described three inner places of the cutting wing is in the same plane.

Further, described composite sheet top is shaped to pointed tooth.

Further, the height of described cutting wing the inner is greater than the height of its outer end.

Further, described three cutting wing the inners are connected in bit body top end face central point.

Further, be provided with the connecting hole position in the described bit body bottom.

The utility model beneficial effect is: the cutting wing described in the utility model is inner to be connected, form recess between the composite sheet at three inner places of the cutting wing, change and cut the structure that the inner composite sheet of the wing is joined together to form a projection in the prior art, like this, creep into deficiency and the defective in inclined to one side hole when having overcome the prior art cutting effectively easily, greatly improved the stability of product.Simultaneously composite sheet described in the utility model top is shaped to pointed tooth, setting like this, have do not train off, non-slip, penetration rate is fast, the advantage of high efficiency.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is that the utility model is overlooked the overall structure schematic diagram.

Among the figure:

1, bit body; 2, the cutting wing; 3, composite sheet;

4, connecting hole position; 5, pointed tooth; 6, recess.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As depicted in figs. 1 and 2, mud stone pointed tooth indent drag bit described in the utility model, comprise bit body 1, be uniformly distributed in three cutting wings 2 on bit body 1 top and be located at some composite sheet 3 of cutting on the wing 2 that above-mentioned three parts constitute the utility model agent structure.

Described 2 inner connections of three cutting wings form recess 6 between the composite sheet 3 at described three the cutting wing 2 inner places, also namely do not connect between the composite sheet 3 at three the cutting wing 2 inner places, are shaped to three convex and tip parts.The composite sheet 3 at preferred described three the cutting wing 2 inner places of the utility model is in the same plane, namely three convex and tip parts are in the same plane, and the utility model is when drilling depth, than prior art, stability is higher, efficiently solves the technical barrier that prior art is crept into inclined to one side hole easily.

When the position of the cutting wing 2 is set, the height of the preferred described cutting wing of the utility model 2 the inners is greater than the height of its outer end, and three the cutting wing 2 the inners are connected in bit body 1 top end face central point, the cutting wing 2 is certain slope and is located at bit body 1 top, namely three the cuttings wing 2 and upper surfaces thereof some composite sheet 3 form pyramidal structures, be conducive to the whole drilling depth of the utility model.Need to prove that the composite sheet 3 of position correspondence is in the same plane on described three cutting wings 2, namely guarantees to have three composite sheet 3 in each respective planes, is beneficial to like this and forms stable drilling depth structure.

Described composite sheet 3 tops are shaped to pointed tooth 5, also are that composite sheet 3 integral body are sharp tooth, during its drilling depth, have non-slip, penetration rate is fast, advantages such as operating efficiency height.

Described bit body is provided with connecting hole position 4 in 1 bottom, is used for being connected and fixed the utility model.

The above only is preferred embodiments of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. mud stone pointed tooth indent drag bit, comprise bit body (1), be uniformly distributed in three cutting wings (2) on bit body (1) top, the described cutting wing (2) upper surface is arranged and is provided with some composite sheet (3), it is characterized in that: described three cutting wings (2) are inner to be connected, and forms recess (6) between the composite sheet (3) at the inner place of described three cutting wings (2).

2. mud stone pointed tooth indent drag bit according to claim 1 is characterized in that: the composite sheet (3) at the inner place of described three cutting wings (2) are in the same plane.

3. mud stone pointed tooth indent drag bit according to claim 1 and 2, it is characterized in that: described composite sheet (3) top is shaped to pointed tooth (5).

4. mud stone pointed tooth indent drag bit according to claim 3 is characterized in that: the inner height of the described cutting wing (2) is greater than the height of its outer end.

5. mud stone pointed tooth indent drag bit according to claim 4 is characterized in that: described three the cutting wing (2) the inners are connected in bit body (1) top end face central point.

6. mud stone pointed tooth indent drag bit according to claim 5, it is characterized in that: described bit body (1) is provided with connecting hole position (4) in the bottom.