CN210152557U

CN210152557U - Reaming device

Info

Publication number: CN210152557U
Application number: CN201920940170.6U
Authority: CN
Inventors: 曾政; 郭国华; 姜命强; 邹爱明
Original assignee: Sinohydro Bureau 8 Co Ltd
Current assignee: Sinohydro Bureau 8 Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-03-17
Anticipated expiration: 2029-06-20

Abstract

The utility model discloses a reaming device, including pilot bit and reamer bit, pilot bit's diameter equals with the aperture in former hole, reamer bit's diameter equals with the reaming required aperture, reamer bit cover is located be equipped with at least one transition drill bit in pilot bit's periphery and between pilot bit and the reamer bit, pilot bit, transition drill bit and reamer bit fixed connection become whole. The utility model has the advantages of simple structure, convenient to use can improve the reaming degree of accuracy, reduce to play repeatedly down to bore deviational survey worker.

Description

Reaming device

Technical Field

The utility model relates to a drilling construction equipment especially relates to a reaming device.

Background

Drilling and reaming are widely applied to various foundation treatment projects. The traditional reaming mode is to adopt a large-aperture reamer to ream on the basis of a small-aperture original hole. Before reaming drilling, a drilling machine needs to be fixed stably, a compass is used for measuring the angle of a vertical shaft of the drilling machine, the drilling direction of a drilled hole is ensured to be consistent with that of an original hole, hole inclination measurement needs to be enhanced in the reaming drilling process, inclination measurement needs to be repeated in the drilling process, the drilling time is long when the drilling is started when the hole depth is deeper, and if the hole inclination exceeds a deviation allowable range, the hole diameter is increased for reaming correction or re-drilling is needed. Optimize reaming device, can improve drilling grout efficiency of construction, play positive effect to construction cost control, progress control.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a simple structure, convenient to use, can improve the reaming degree of accuracy, reduce the reaming device who plays the brill deviational survey process repeatedly.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a reaming device, includes pilot bit and reamer bit, pilot bit's diameter equals with the aperture in former hole, reamer bit's diameter equals with the required aperture of reaming, reamer bit cover is located pilot bit's periphery, and be equipped with at least one transition drill bit between pilot bit and the reamer bit, pilot bit, transition drill bit and reamer bit fixed connection become whole.

As a further improvement of the above technical solution: the pilot bit with transition drill bit welded connection, the transition drill bit with reamer bit welded connection.

As a further improvement of the above technical solution: the reaming device further comprises a rock core pipe, the diameter of the rock core pipe is equal to that of the reaming drill bit, and one end of the rock core pipe is in threaded connection with the reaming drill bit.

As a further improvement of the above technical solution: and the other end of the rock core pipe is in threaded connection with a connecting hand.

As a further improvement of the above technical solution: and one end of the connecting hand, which is far away from the rock core pipe, is in threaded connection with a drill rod joint.

As a further improvement of the above technical solution: the guide drill bit is a full-section diamond drill bit, and the transition drill bit and the reaming drill bit are diamond drill bits.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a reaming device, set up the pilot bit in the reamer bit, the diameter of pilot bit is unanimous with the aperture in former hole, one-level or multistage transition drill bit transition is passed through in the clearance between reamer bit and the pilot bit, transition drill bit and reamer bit connect as an organic wholely, high durability and convenient use, only need when reaming creeps into, the pilot bit plays the guide effect in former hole with the reamer bit, the reaming degree of accuracy has been improved, reduced and led to reaming inefficacy condemned phenomenon because of the reaming skew, the while has reduced and has played down the brill deviational survey process repeatedly, construction progress has effectively been improved.

Drawings

Fig. 1 is an external structure schematic diagram of the reaming device of the present invention.

Fig. 2 is the internal structure schematic diagram of the reaming device of the present invention after amplification.

The reference numerals in the figures denote: 1. a drill pipe joint; 2. connecting the hand; 3. a core barrel; 4. a hole expanding drill bit; 5. a transition bit; 7. and (6) guiding the drill bit.

Detailed Description

The invention is described in further detail below with reference to the drawings and specific examples.

Fig. 1 to fig. 2 show the utility model discloses an embodiment of reaming device, the reaming device of this embodiment, including pilot bit 7 and reamer bit 4, the diameter of pilot bit 7 equals with the aperture in original hole, and the diameter of reamer bit 4 equals with the reaming required aperture, and the periphery of pilot bit 7 is located to reamer bit 4 cover, and is equipped with two transition drill bits 5 between pilot bit 7 and the reamer bit 4, and pilot bit 7, transition drill bit 5 and reamer bit 4 fixed connection become whole. Wherein, from inside to outside, the diameter of direction drill bit 7, first level transition drill bit 5, second grade transition drill bit 6 and reamer bit 4 is 60mm, 75mm, 91mm and 110mm respectively.

This reaming device, set up pilot bit 7 in reamer bit 4, pilot bit 7's diameter is unanimous with the aperture in original hole, the clearance between reamer bit 4 and the pilot bit 7 passes through one-level or multistage transition drill bit 5 transition, pilot bit 7, transition drill bit 5 and reamer bit 4 are connected as an organic wholely, high durability and convenient use, only need during the reaming creeps into with pilot bit 7 and original hole calibration, drill in-process pilot bit 7 plays the guide effect in original hole, the reaming degree of accuracy has been improved, it leads to the reaming inefficacy and condemned phenomenon because of the reaming skew to have reduced simultaneously and has played down drilling deviational survey process repeatedly, construction progress has effectively been improved.

In the preferred technical scheme, the pilot bit 7 is connected with the transition bit 5 in a welding mode, and the transition bit 5 is connected with the expanding bit 4 in a welding mode, so that the structure is simple and reliable. Although other embodiments may employ fasteners, pins, etc. to secure the drill bits.

Further, in this embodiment, the reaming device further includes a core barrel 3, the diameter of the core barrel 3 is equal to the diameter of the reaming bit 4, and one end of the core barrel 3 is in threaded connection with the reaming bit 4. In the drilling process, the core barrel 3 plays the roles of reducing and guiding.

Further, in the present embodiment, the core barrel 3 is screw-coupled at the other end thereof to a coupling hand 2. The connecting hand 2 plays a role in reducing, is conveniently connected with the drill rod joint 1, one end, far away from the rock core pipe 3, of the connecting hand 2 is in threaded connection with the drill rod joint 1, the drill rod joint 1 plays a role in reducing, is consistent with the diameter of a drill rod after being reduced, and can be directly connected with the drill rod.

In the preferred embodiment, the pilot bit 7 is a full-face diamond bit, and the transition bit 5 and the reamer bit 4 are both diamond bits. The guide drill bit 7 adopts a full-section diamond drill bit, and the transition drill bit 5 and the expanding drill bit 4 both adopt diamond drill bits, so that the expanding device is high in strength, good in wear resistance and strong in impact resistance.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims

1. A reaming device characterized by: including pilot bit (7) and reamer bit (4), the diameter of pilot bit (7) equals with the aperture in former hole, the diameter of reamer bit (4) equals with the required aperture of reaming, reamer bit (4) cover is located the periphery of pilot bit (7), and be equipped with at least one transition drill bit (5) between pilot bit (7) and reamer bit (4), pilot bit (7), transition drill bit (5) and reamer bit (4) fixed connection become whole.

2. The reaming device of claim 1, wherein: the pilot bit (7) with transition drill bit (5) welded connection, transition drill bit (5) with reamer bit (4) welded connection.

3. A reaming device according to claim 1 or 2, characterized in that: still include core barrel (3), the diameter of core barrel (3) with the diameter of reamer bit (4) equals, core barrel (3) one end with reamer bit (4) threaded connection.

4. The reaming device of claim 3, wherein: the other end of the rock core pipe (3) is in threaded connection with a connecting hand (2).

5. The reaming device of claim 4, wherein: one end of the connecting hand (2) far away from the core barrel (3) is in threaded connection with a drill rod joint (1).

6. A reaming device according to claim 1 or 2, characterized in that: the guide drill bit (7) is a full-section diamond drill bit, and the transition drill bit (5) and the expanding drill bit (4) are diamond drill bits.