CN216043543U

CN216043543U - Drill bit for geological exploration with screw thread sheath

Info

Publication number: CN216043543U
Application number: CN202122563686.3U
Authority: CN
Inventors: 郑友星; 戴志德; 陆佳佳; 王武志; 张建申
Original assignee: Wuhan Zhengzao Heavy Construction Machinery Co ltd
Current assignee: Wuhan Zhengzao Heavy Construction Machinery Co ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2022-03-15
Anticipated expiration: 2031-10-25

Abstract

The utility model discloses a geological exploration drill bit with a threaded sheath, which comprises a drill rod, wherein a cutting head is arranged at the head part of the drill rod through a fixing bolt, corresponding fixing holes are formed in the cutting head and the drill rod, the fixing bolt is screwed into the fixing holes to form fixed connection between the cutting head and the drill rod, an outer sleeve is connected in the fixing holes in a threaded manner, an inner plug cylinder is arranged in the outer sleeve, and the bolt head of the fixing bolt is positioned at the positions of the inner plug cylinder and the outer sleeve. The utility model provides a drill bit with a thread sheath for geological exploration, which is ingenious in structural arrangement and reasonable in arrangement, when a drill rod is connected with a cutting head, a fixing bolt is screwed into a fixing hole for fixing, then an outer sleeve is screwed into the fixing hole by using threads to form connection, then an inner plug cylinder is plugged into the outer sleeve, the outer sleeve and the inner plug cylinder complete shielding and sealing of the fixing bolt and the fixing hole, the fixing bolt can be protected from abrasion, the fixing hole is not blocked, and the disassembly and assembly operation of the drill rod and the cutting head is greatly facilitated.

Description

Drill bit for geological exploration with screw thread sheath

Technical Field

The utility model relates to the technical field of geological exploration equipment, in particular to a drill bit with a threaded sheath for geological exploration.

Background

Geological exploration is investigation and research activities of surveying and detecting geology through various means and methods, determining a proper bearing stratum, determining a foundation type according to the foundation bearing capacity of the bearing stratum and calculating foundation parameters. The method is to find an industrially significant mineral deposit in mineral census, provide mineral reserves and geological data required by mine construction design for finding out the quality and quantity of the mineral and technical conditions of mining and utilization, and carry out investigation and research work on geological conditions such as rocks, strata, structures, mineral products, hydrology, landforms and the like in a certain area.

The existing drill bit for geological exploration is mostly connected by adopting countersunk head screws, when the drill bit drills into harder geology, the outer surface of the head of the countersunk head screw is exposed, so that the drill bit is easily abraded by the harder geology, and the stress surface is reduced and inconvenient to operate when the drill bit is detached. Therefore, the inventor provides the drill bit for geological exploration with the threaded sheath by combining various factors.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a geological exploration drill bit with a threaded sheath to solve the problems set forth in the background above.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a drill bit for geological exploration with screw thread sheath, includes the drilling rod, the cutting head is installed through fixing bolt in drilling rod head position, all sets up corresponding fixed orifices on cutting head and the drilling rod, and the fixed connection of cutting head and drilling rod is formed to fixing bolt screw in fixed orifices, and threaded connection has the outer tube simultaneously in the fixed orifices, and opening around the outer tube is equipped with interior stopper section of thick bamboo in the outer tube, interior stopper section of thick bamboo front end opening, and fixing bolt's bolt head is located interior stopper section of thick bamboo and outer tube position.

When the drill rod is connected with the cutting head, the drill rod is firstly fixed in the fixing hole through the fixing bolt, then the outer sleeve is screwed in the fixing hole through the threads to form connection, part of the outer sleeve is reserved outside the fixing hole so as to be convenient to detach, then the inner plug cylinder is plugged in the outer sleeve, the outer sleeve and the inner plug cylinder complete shielding and sealing of the fixing bolt and the fixing hole, when the drill bit is used, the fixing bolt can be protected from abrasion, the fixing hole is not blocked, and the disassembly and assembly operation of the drill rod and the cutting head is greatly facilitated.

As a further scheme of the utility model: the spiral blades are welded and fixed on the drill rod and used for taking out soil when the drill bit drills into the drill rod, so that the frictional resistance between the drill bit and the soil is reduced, and the drill bit is easier to drill into the drill rod.

As a further scheme of the utility model: the scraper is uniformly welded and fixed on the outer side of the spiral blade and used for reforming the inner wall of a drilled hole, so that the drilled hole is smoother, the protrusion is reduced, and the subsequent geological sampling operation is facilitated.

As a further scheme of the utility model: a spring buckle is arranged between the outer sleeve and the inner plug barrel, so that the fixing strength of the outer sleeve and the inner plug barrel is increased, and the outer sleeve and the inner plug barrel are not easy to separate.

As a further scheme of the utility model: the outer sleeve internal orifice is polygonal structure setting, and fixing bolt and the screw thread opposite direction of outer sleeve for form spacing relation between interior stopper section of thick bamboo and the fixing bolt, when fixing bolt appears outwards slowly rotating the pine and takes off under the influence of drill bit work production, receive the reverse screw thread influence of outer sleeve, the fixing of stopper section of thick bamboo and outer sleeve in combining, thereby has restricted fixing bolt's pine to take off, has further promoted the fixed stability of cutting head.

Compared with the prior art, the utility model has the following beneficial effects:

1. the drill bit for geological exploration with the threaded sheath is ingenious in structural arrangement and reasonable in arrangement, the outer sleeve and the inner plug cylinder complete shielding and sealing of the fixing bolt and the fixing hole, the fixing bolt can be protected from abrasion when the drill bit is used, the fixing hole is not blocked, and the disassembly and assembly operation of a drill rod and a cutting head is greatly facilitated;

2. the inner opening of the outer sleeve is arranged in a polygonal structure, the thread directions of the fixing bolt and the outer sleeve are opposite, so that a limiting relation is formed between the inner plug cylinder and the fixing bolt, and when the fixing bolt slowly rotates outwards to be loosened under the influence of the work of a drill bit, the fixing bolt is influenced by the reverse thread of the outer sleeve and is combined with the fixing of the inner plug cylinder and the outer sleeve, so that the loosening of the fixing bolt is limited, and the fixing stability of the cutting head is further improved;

3. the drill bit has simple structure, is stable and reliable during drilling operation, and is more convenient and easier to disassemble and assemble.

Drawings

FIG. 1 is a schematic diagram of a geological exploration drill bit having a threaded sheath.

FIG. 2 is a schematic view of a securing structure for a cutting head in a geological exploration drill bit having a threaded sheath.

FIG. 3 is a cross-sectional view of an outer casing in a geological exploration drill bit having a threaded sheath.

In the figure: 1. a drill stem; 2. a cutting head; 21. fixing the bolt; 22. an outer sleeve; 23. an inner plug cylinder; 24. a spring buckle; 25. a fixing hole; 3. helical leaves; 31. and (4) scraping the blade.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 3, a drill bit with a thread sheath for geological exploration comprises a drill rod 1, wherein a cutting head 2 is mounted at the head of the drill rod 1 through a fixing bolt 21, a spiral blade 3 is fixedly welded on the drill rod 1 and used for taking out soil by utilizing the rotation of the spiral blade 3 after the drill bit drills in, so that the resistance of the soil when the drill bit drills in is reduced, the drill bit can more conveniently drill into a stratum, and scraping blades 31 are uniformly welded and fixed on the outer side of the spiral blade 3;

corresponding fixing holes 25 are formed in the cutting head 2 and the drill rod 1, the fixing bolt 21 is screwed into the fixing holes 25 to form fixed connection between the cutting head 2 and the drill rod 1, an outer sleeve 22 is connected to the fixing holes 25 through threads, front and rear openings of the outer sleeve 22 are formed, an inner opening of the outer sleeve 22 is of a polygonal structure, an inner plug cylinder 23 is arranged in the outer sleeve 22, the front end of the inner plug cylinder 23 is open, the bolt head of the fixing bolt 21 is located at the positions of the inner plug cylinder 23 and the outer sleeve 22, a spring buckle 24 is arranged between the outer sleeve 22 and the inner plug cylinder 23, and the thread directions of the fixing bolt 21 and the outer sleeve 22 are opposite.

The working principle of the utility model is as follows: when the drill rod 1 is connected with the cutting head 2, the fixing bolt 21 is screwed into the fixing hole 25 for fixing, then the outer sleeve 22 is screwed into the fixing hole 25 by using threads to form connection, part of the outer sleeve 22 is reserved outside the fixing hole 25 so as to be convenient for disassembly, then the inner plug cylinder 23 is plugged into the outer sleeve 22, the outer sleeve 22 and the inner plug cylinder 23 finish shielding and sealing the fixing bolt 21 and the fixing hole 25, when the drill bit is used, the fixing bolt 21 can be protected from abrasion, the fixing hole 25 is not blocked, and the disassembly and assembly operation of the drill rod 1 and the cutting head 2 is greatly facilitated;

meanwhile, when the fixing bolt 21 is slowly rotated outwards to be loosened under the influence of the operation of the drill bit, the fixing bolt is combined with the fixing of the inner plug cylinder 23 and the outer sleeve 22 under the influence of the reverse threads of the outer sleeve 22, so that the loosening of the fixing bolt 21 is limited, and the fixing stability of the cutting head is further improved.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a drill bit for geological exploration with screw thread sheath, including drilling rod (1), a serial communication port, cutting head (2) are installed through fixing bolt (21) in drilling rod (1) head position, corresponding fixed orifices (25) have all been seted up on cutting head (2) and drilling rod (1), fixing bolt (21) screw in fixed orifices (25) form the fixed connection of cutting head (2) and drilling rod (1), threaded connection has outer tube (22) simultaneously in fixed orifices (25), opening around outer tube (22), be equipped with interior stopper section of thick bamboo (23) in outer tube (22), interior stopper section of thick bamboo (23) front end opening, the bolt head of fixing bolt (21) is located interior stopper section of thick bamboo (23) and outer tube (22) position.

2. Drill bit for geological exploration with threaded sheath according to claim 1, characterized in that said drill rod (1) is welded and fixed with helical blades (3).

3. The geological exploration drill bit with threaded sheath according to claim 2, characterized in that outside of said helical blade (3) is welded and fixed with scraping blades (31) uniformly.

4. A geological exploration drill bit with a threaded sheath according to any of claims 1 to 3, characterized in that a spring catch (24) is provided between the outer sleeve (22) and the inner plug cylinder (23).

5. A geological exploration drill bit with threaded sheath according to claim 4, characterized in that said inner mouth of said outer sleeve (22) is arranged in a polygonal configuration, the fixing bolt (21) being threaded in the opposite direction to the outer sleeve (22).