阅读说明：本技术 一种碾轮扩孔钻进器 (Mill wheel expanding drilling device ) 是由 魏超科 于 2021-10-25 设计创作，主要内容包括：一种碾轮扩孔钻进器,本发明涉及钻井钻孔技术领域,它包含钻杆、碾轮和主轴；主轴穿设在钻杆上,并利用销固定；所述碾轮套设在主轴的两端上；外密封盖嵌设在碾轮的外端内,且外密封盖螺纹连接在主轴上；内密封盖嵌设在碾轮的内端内,且内密封盖螺纹连接在主轴上；轴套套设在外密封盖与内密封盖的相邻处；油轴承设置在轴套的两端,且分别套设在外密封盖与内密封盖上,上述碾轮套设在油轴承的外圈上。其经久耐用,降低高成本的投入,实用性更强。(The invention relates to a grinding wheel expanding drilling device, which relates to the technical field of drilling and boring, and comprises a drill rod, a grinding wheel and a main shaft; the main shaft penetrates through the drill rod and is fixed by a pin; the grinding wheels are sleeved on two ends of the main shaft; the outer sealing cover is embedded in the outer end of the grinding wheel and is connected to the main shaft in a threaded manner; the inner sealing cover is embedded in the inner end of the grinding wheel and is in threaded connection with the main shaft; the shaft sleeve is sleeved at the adjacent position of the outer sealing cover and the inner sealing cover; the oil bearing sets up at the both ends of axle sleeve, and overlaps respectively and establish on outer gland bonnet and interior sealed lid, and above-mentioned running roller cover is established on oil bearing's outer lane. The novel electric heating furnace is durable, reduces high-cost investment, and is higher in practicability.)

1. A roller reamer comprises a drill rod (1), a roller (2) and a main shaft (3); the main shaft (3) penetrates through the drill rod (1) and is fixed by a pin (4); the grinding wheels (2) are sleeved on two ends of the main shaft (3); it is characterized in that it also comprises:

the outer sealing cover (6) is embedded in the outer end of the grinding wheel (2), and the outer sealing cover (6) is in threaded connection with the main shaft (3);

the inner sealing cover (7) is embedded in the inner end of the grinding wheel (2), and the inner sealing cover (7) is in threaded connection with the main shaft (3);

the shaft sleeve (9), the said shaft sleeve (9) is set up in the adjacent place of the external seal cover (6) and internal seal cover (7);

the oil bearings (8) are arranged at two ends of the shaft sleeve (9) and are respectively sleeved on the outer sealing cover (6) and the inner sealing cover (7), and the grinding wheel (2) is sleeved on the outer ring of the oil bearing (8);

in the drilling process of the drill rod (1), the drill rod (1) rotates, a drill bit connected with the lower end of the drill rod leads a hole, the grinding wheels (2) at two ends of the main shaft (3) rotate under the action of the oil bearing (8), and reaming and rock breaking drilling is realized through the alloy (5) embedded on the grinding wheels (2).

2. A roller reamer as claimed in claim 1, wherein: circular half grooves are formed in the outer ring surfaces of the outer sealing cover (6) and the inner sealing cover (7) and the inner ring surface of the grinding wheel (2), and the two opposite circular half grooves form an O-shaped groove (11); a sealing ring (10) is embedded in the O-shaped groove (11).

3. A roller reamer as claimed in claim 1, wherein: a plurality of alloys (5) are arranged in front of the outer ring surface of the grinding wheel (2).

4. A roller reamer as claimed in claim 1, wherein: the outer end of the contact part of the outer ring surface of the outer sealing cover (6) and the main shaft (3) is welded and fixed.

5. A roller reamer as claimed in claim 1, wherein: the main shaft (3) is welded and fixed with the outer end of the penetration joint of the drill rod (1).

6. A roller reamer as claimed in claim 1, wherein: the upper end of the drill rod (1) is provided with an upper end external thread (1-1).

7. A roller reamer as claimed in claim 1, wherein: the lower end of the drill rod (1) is provided with lower-end internal threads (1-2).

Technical Field

The invention relates to the technical field of drilling, in particular to a grinding wheel reamer.

Background

The existing drilling holes are drilled by cone bit, in the drilling process, the bit is easy to damage and crack when meeting rocks and the like, the production cost of the cone is high, the process is complex, the whole drilling hole cost is increased, and a drilling device capable of reducing the cost is urgently needed.

Disclosure of Invention

The invention aims to overcome the defects and shortcomings of the prior art and provides a roller reamer which is durable, reduces high-cost input and has stronger practicability.

In order to achieve the purpose, the invention adopts the following technical scheme: it comprises a drill rod, a grinding wheel and a main shaft; the main shaft penetrates through the drill rod and is fixed by a pin; the grinding wheels are sleeved on two ends of the main shaft; it also includes:

the outer sealing cover is embedded in the outer end of the grinding wheel and is connected to the main shaft in a threaded manner;

the inner sealing cover is embedded in the inner end of the grinding wheel and is in threaded connection with the main shaft;

the shaft sleeve is sleeved at the adjacent position of the outer sealing cover and the inner sealing cover;

the oil bearing sets up at the both ends of axle sleeve, and overlaps respectively and establish on outer sealing lid and interior sealed lid, and above-mentioned running roller cover is established on oil bearing's outer lane.

Preferably, circular half grooves are formed in the outer ring surfaces of the outer sealing cover and the inner ring surface of the grinding wheel, and the two opposite circular half grooves form an O-shaped groove; a sealing ring is embedded in the O-shaped groove.

Preferably, a plurality of alloys are arranged in front of the outer ring surface of the grinding wheel.

Preferably, the outer end of the contact part of the outer ring surface of the outer sealing cover and the main shaft is welded and fixed.

Preferably, the outer end of the penetrating joint of the main shaft and the drill rod is fixed by welding.

Preferably, the upper end of the drill rod is provided with an upper end external thread.

Preferably, the lower end of the drill rod is provided with lower-end internal threads.

The working method of the invention is as follows: the upper end of the drill rod is connected with another drill rod or drill collar, the lower end of the drill rod is connected with a drill bit or drill collar, in the drilling process, the drill rod rotates, the drill bit connected with the lower end of the drill rod leads a hole, the grinding wheels at two ends of the main shaft rotate under the action of the oil bearing, and the reaming rock breaking drilling is realized through the alloy embedded on the grinding wheels.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a roller reamer which is durable, reduces the investment of high cost and has stronger practicability.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Description of reference numerals:

the drill rod comprises a drill rod 1, an upper end external thread 1-1, a lower end internal thread 1-2, a grinding wheel 2, a main shaft 3, a pin 4, an alloy 5, an outer sealing cover 6, an inner sealing cover 7, an oil bearing 8, a shaft sleeve 9, a sealing ring 10 and an O-shaped groove 11.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the protection scope of the present invention.

As shown in fig. 1, the following technical solutions are adopted in the present embodiment: the device comprises a drill rod 1, a grinding wheel 2 and a main shaft 3; the main shaft 3 penetrates through the drill rod 1, the outer end of the penetrating part is welded and fixed, and the main shaft and the drill rod are fixed through a pin 4; the upper end of the drill rod 1 is provided with an upper end external thread 1-1, the lower end is provided with a lower end internal thread 1-2, and the grinding wheel 2 is sleeved on two ends of the main shaft 3; a plurality of alloys 5 are arranged in front of the outer ring surface of the grinding wheel 2; it also includes:

the outer sealing cover 6 is embedded in the outer end of the grinding wheel 2, the outer sealing cover 6 is in threaded connection with the main shaft 3, and the outer end of the contact position is welded and fixed;

the inner sealing cover 7 is embedded in the inner end of the grinding wheel 2, and the inner sealing cover 7 is in threaded connection with the main shaft 3;

the shaft sleeve 9 is sleeved at the adjacent position of the outer sealing cover 6 and the inner sealing cover 7;

the oil bearing 8, oil bearing 8 sets up at the both ends of axle sleeve 9, and overlaps respectively and establish on outer seal lid 6 and inner seal lid 7, and above-mentioned running roller 2 cover is established on oil bearing 8's outer lane.

Preferably, circular half grooves are formed in the outer annular surfaces of the outer sealing cover 6 and the inner sealing cover 7 and the inner annular surface of the grinding wheel 2, and the two opposite circular half grooves form an "O" shaped groove 11; a sealing ring 10 is embedded in the O-shaped groove 11, so that a gap between the grinding wheel 2 and the outer sealing cover 6 and the inner sealing cover 7 is sealed, and broken stones are prevented from entering.

The working method of the embodiment is as follows: the upper end of the drill rod 1 is connected with another drill rod or drill collar, the lower end of the drill rod 1 is connected with a drill bit or drill collar, in the drilling process, the drill rod 1 rotates, the drill bit connected with the lower end of the drill rod leads a hole, the grinding wheels 2 at two ends of the main shaft 3 rotate under the action of the oil bearing 8, and the reaming rock breaking drilling is realized through the alloy 5 embedded on the grinding wheels 2.

Compared with the prior art, the beneficial effects of the embodiment are as follows: this embodiment provides a grinding wheel reamer ware, and its durable reduces costly input, and the practicality is stronger.

It will be appreciated by those skilled in the art that modifications and equivalents may be made to the embodiments described above, and that various modifications, equivalents, improvements and the like may be made without departing from the spirit and scope of the invention.