CN201196026Y

CN201196026Y - Core extraction drilling bit for drilling industry

Info

Publication number: CN201196026Y
Application number: CNU2008200291685U
Authority: CN
Inventors: 付建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-21
Filing date: 2008-05-21
Publication date: 2009-02-18
Anticipated expiration: 2018-05-21

Abstract

The utility model relates to the drilling equipment industry, in particular to a core bit for the drilling industry. The utility model aims at solving the problems that components are more, and the failure rate and the drilling cost are high in the prior art, and the technical proposal provided at present is that the core bit for the drilling industry comprises a crown part of the bit, a bit body, a connecting thread part and a circlip, wherein the circlip is positioned inside the bit body, and the inner diameter of the thread part of the bit body is larger than that of the crown part end of the bit. Compared with the prior art, the utility model has the advantages that the circlip is positioned inside the core bit, which is close to the root of a drill core, thereby the drill core can be cut form the root, the phenomenon of secondarily drilling and grinding the drill core can not occur, thereby the construction difficulty is reduced, and the abrasion of the bit is reduced, simultaneously, the functions of the original core bit and a circlip seat are combined into a whole, thereby the structure is simplified, the failure rate is reduced, and the core recovery percentage is guaranteed, with the stopping of the failures, the drilling cost is greatly reduced and the construction quality is improved.

Description

Probing industry coring bit

Technical field

The utility model relates to the drilling equipment industry, is specifically related to a kind of probing industry coring bit.

Background technology:

The coring bit assembly comprises coring bit, clip spring seat, switching hand and core barrel at present, and coring bit is made up of drill bit, drill bit body and thread portion, is provided with jump ring in the clip spring seat, and coring bit is connected with switching hand, core barrel by clip spring seat.The shortcoming that the coring bit of prior art exists is: 1, coring weak effect: because the jump ring in the clip spring seat is far away from the core root, force application location is higher, and therefore core can not cut off from root sometimes, causes secondary to creep into, and the core phenomenon occurs grinding again; 2, the wearing and tearing of difficulty of construction and drill bit have been increased; 3, drilling cost is higher: because the parts in this coring bit assembly are many, the structure relative complex has increased the fault rate of coring bit assembly, and taking rate descends, and reduces the drilling operation quality, and reliability reduces, and can cause drilling cost to increase because of accident rate rises.

Summary of the invention:

The purpose of this utility model be solve that the parts that prior art exists are many, accident rate and the high problem of drilling cost.

For solving the problem that prior art exists, the technical solution of the utility model is: a kind of probing industry coring bit, comprise drill bit 1, drill bit body 2, thread portion 3 and jump ring 4, its special character is: described jump ring 4 is arranged at the inside of drill bit body 2, and the internal diameter of described drill bit body 2 screw thread ends is greater than the internal diameter of drill bit end.

Above-mentioned thread portion 3 is set to internal thread 5.Be convenient to be connected with conventional switching hand.

Compared with prior art, advantage of the present utility model is as follows: jump ring is arranged in the coring bit, and is near apart from the core root, and core can cut off from root, secondary can not occur and creep into mill core phenomenon, so just reduced difficulty of construction, reduced the wearing and tearing of drill bit; Simultaneously original coring bit and clip spring seat function are united two into one, simplify the structure, reduced fault rate, effectively guaranteed taking rate, stopped this type of accident and drilling cost is greatly reduced, improved construction quality.

Description of drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the A-A sectional view of Fig. 1.

Description of reference numerals is as follows:

The 1-drill bit, 2-drill bit body, 3-thread portion, 4-jump ring, 5-internal thread.

The specific embodiment:

Below in conjunction with accompanying drawing the utility model is elaborated.

Referring to Fig. 1, Fig. 2, a kind of probing industry coring bit comprises drill bit 1, drill bit body 2 and thread portion 3.Be provided with jump ring 4 in drill bit body 2 inside, so just form the jump ring chamber in the inside of drill bit body 2, the screw thread of described thread portion 3 is an internal thread.The internal diameter of screw thread end is greater than the internal diameter of drill bit 1 one ends in the said drill bit body 2.

During on-the-spot the use, thread of the present utility model portion 3 is connected with on hand the threaded engagement of transferring gets final product.

During use, the coring bit core drilling makes core go deep into carrying when boring to the jump ring chamber, and jump ring 4 tightly blocks the core root, and core cuts off from root, takes out.

Claims

1. drill the industry coring bit for one kind, comprise drill bit (1), drill bit body (2), thread portion (3) and jump ring (4), it is characterized in that: described jump ring (4) is arranged at the inside of drill bit body (2), and the internal diameter of described drill bit body (2) screw thread end is greater than the internal diameter of drill bit end.

2. probing industry coring bit as claimed in claim 1 is characterized in that: described thread portion (3) is set to internal thread (5).