CN214424415U - Drill bit structure of drilling machine - Google Patents

Abstract

The utility model discloses a rig drill bit structure, including a cylinder section of thick bamboo, a cylinder section of thick bamboo is including bottom face and the top face dorsad each other, is provided with a plurality of roller seats of arranging along the circumference of bottom face on the edge of bottom face, installs the gear wheel on the roller seat, and the roller seat includes the multiaspect lateral wall, is provided with the stopper between two adjacent roller seats, and the stopper includes two tip relative each other, is provided with spacing face on two tip respectively, spacing face and the at least two sides lateral wall butt of close roller seat. The utility model provides a roller bit of rig bit structure not hard up and the problem that drops easily.

Description

Drill bit structure of drilling machine

Technical Field

The utility model relates to a drilling rig equipment technical field especially relates to a can prevent not hard up rig bit structure of roller bit.

Background

When the roller bit is used for drilling construction, a central cone tip roller of the roller bit is firstly contacted with a rock surface of a construction bottom layer, under the combined action of thrust and torque, a roller bit revolves around a central shaft of a drill rod on one hand, and simultaneously, the roller bit rotates around the axis of the roller bit, so that rock strata are crushed under the comprehensive actions of impact, extrusion, shearing, tension fracture and the like. Because the roller bit directly contacts with harder objects such as rocks, the abrasion degree of the roller bit is large, and the roller bit needs to be replaced frequently. In order to replace the roller bit conveniently, the existing roller bit is installed on a cylindrical barrel of a drilling machine in a threaded connection mode. However, the impact generated during the collision of the roller cone bit with the rock formation may loosen the roller cone bit, which may cause the roller cone bit to separate from the cylindrical barrel.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses a following technical scheme:

the utility model provides a rig drill bit structure, including a cylinder section of thick bamboo, a cylinder section of thick bamboo is including bottom face and the top face dorsad each other, be provided with the edge on the edge of bottom face a plurality of roller seats of the circumference range of bottom face, install the gear wheel on the roller seat, the roller seat includes the multiaspect lateral wall, adjacent two be provided with the stopper between the roller seat, the stopper includes two tip relative each other be provided with spacing face on two tip respectively, spacing face is with close at least two sides lateral wall butt of roller seat.

Preferably, the limiting block is further provided with a shovel plate perpendicular to the bottom end face, and an included angle between the shovel plate and the rotation direction of the cylindrical barrel is greater than or equal to 90 °.

Preferably, a slag suction cavity is arranged in the cylindrical barrel and is close to the bottom end face, the plurality of gear seats form an installation area on the bottom end face in a surrounding mode, a slag suction port is arranged in the installation area and is communicated with the slag suction cavity, and the drill bit structure of the drilling machine further comprises a backflow pipeline which penetrates through the top end face and is communicated with the slag suction cavity.

Preferably, a plurality of auxiliary roller drills are further arranged in the mounting area.

Preferably, a plurality of counterweight cavities are further arranged in the cylindrical barrel, the counterweight cavities are close to the top end face and surround the periphery of the backflow pipeline, and a discharge hole communicated with the counterweight cavities is formed in the top end face.

Preferably, a plurality of protrusions arranged along the circumferential direction of the cylindrical drum are arranged on the side wall of the cylindrical drum close to the bottom end surface.

Preferably, the side wall of the cylinder is sleeved with an elastic ring, and the elastic ring comprises an extension part extending along the radial direction of the cylinder.

The utility model discloses an among the rig bit structure, the spacing face of stopper and the at least two sides lateral wall butt of the adjacent roller seat to the spacing face of this each roller seat both sides can restrict the activity of this roller seat (for example: rotation etc. that arouses because of not hard up), thereby can prevent this roller seat and break away from the cylinder, has reduced the possibility that rig bit structure broke down.

Drawings

Fig. 1 is a schematic structural diagram of a drill bit structure of a drilling machine according to an embodiment of the present invention;

FIG. 2 is a bottom view of the drill bit structure of the drill shown in FIG. 1;

fig. 3 is a schematic structural diagram of a drill bit structure of a drilling machine according to another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings. Examples of these preferred embodiments are illustrated in the accompanying drawings. The embodiments of the invention described in the figures and described in accordance with the figures are only exemplary and the invention is not limited to these embodiments.

In addition, in order to avoid obscuring the present invention with unnecessary detail, only the structures and/or process steps that are germane to the scheme according to the present invention are shown in the drawings, and other details that are not germane to the present invention are omitted.

In order to solve the prior art problem mentioned in the background art, the embodiment of the present invention adopts the following technical solution.

As shown in fig. 1, the drill bit structure of the drilling machine provided by the present embodiment includes a cylindrical barrel 1, where the cylindrical barrel 1 includes a bottom end surface 11 and a top end surface 12 that face away from each other, a plurality of cone seats 2 arranged along the circumferential direction of the bottom end surface 11 are disposed on the edge of the bottom end surface 11, and a cone 21 is mounted on the cone seats 2.

In the present embodiment, the gear wheel seat 2 includes multi-sided side walls, that is, the cross section of the gear wheel seat 2 is polygonal (e.g., triangular, rectangular, pentagonal, etc.). As shown in fig. 2, a limiting block 3 is disposed between two adjacent gear seats 2, and the limiting block 3 includes two end portions opposite to each other.

As shown in fig. 2, the two end portions are respectively provided with a stopper surface 31, and the stopper surface 31 abuts against at least two side walls of the adjacent gear seat 2. Therefore, the limiting surfaces 31 on the two sides of each gear seat 2 are matched with each other, the movement of the gear seat 2 can be limited, the gear seat 2 can be prevented from loosening, the gear seat 2 can be prevented from being separated from the cylindrical barrel 1, and the possibility of the drill bit structure of the drilling machine to break down is reduced.

Specifically, as shown in fig. 1, a slag suction cavity 13 is arranged in the cylindrical barrel 1, and the slag suction cavity 13 is close to the bottom end surface 11. Wherein the plurality of cone blocks 2 form a mounting area around on the bottom end face 11. A slag suction port 14 is arranged in the mounting area, and the slag suction port 14 is communicated with the slag suction cavity 13. The drill bit structure of the drilling machine further comprises a return pipeline 15, and the return pipeline 15 penetrates through the top end face 12 and is communicated with the slag suction cavity 13. A plurality of weight chambers 16 are also provided in the cylinder 1, the weight chambers 16 being adjacent to the top end face 12 and surrounding the return duct 15. The top end face 12 is provided with a discharge hole 17 communicated with the counterweight cavity 16. In this embodiment, a plurality of auxiliary roller cone drills 22 may also be provided in the installation area for improved efficiency of the drill.

Preferably, as shown in fig. 2, in this embodiment, the limiting block 3 is further provided with a shovel plate 32 perpendicular to the bottom end surface 11, and an included angle between the shovel plate 32 and the rotation direction of the cylindrical barrel 1 is greater than or equal to 90 °. The shovel plate 32 rotates with the cylinder 1, and can collect particles such as rock dust or sand particles at the slag suction port 14 in the process, so that the slag suction efficiency is improved.

Alternatively, as shown in fig. 3, in order to improve the strength of the cylindrical drum 1, a plurality of protrusions 18 arranged in the circumferential direction of the cylindrical drum 1 may be further provided on the side wall of the cylindrical drum 1 near the bottom end surface 11. The convex part 18 not only can improve the strength of the outer wall of the cylinder barrel 1, but also can be used for reaming of the drill bit of the drilling machine.

Preferably, as shown in fig. 3, in order to prevent some debris from flowing back along the gap between the outer wall and the hole wall of the cylindrical barrel 1, an elastic ring 19 is sleeved on the side wall of the cylindrical barrel 1. The elastic ring 19 includes an extension extending in the radial direction of the cylindrical drum 1. The elastic ring 19 is preferably made of rubber or silicone.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The drill bit structure of the drilling machine is characterized by comprising a cylindrical barrel (1), wherein the cylindrical barrel (1) comprises a bottom end face (11) and a top end face (12) which are back to each other, a plurality of gear seats (2) which are arranged along the circumferential direction of the bottom end face (11) are arranged on the edge of the bottom end face (11), a gear (21) is installed on each gear seat (2), each gear seat (2) comprises a multi-face side wall, a limiting block (3) is arranged between every two adjacent gear seats (2), each limiting block (3) comprises two end portions which are opposite to each other, limiting faces (31) are respectively arranged on the two end portions, and the limiting faces (31) are abutted against at least two side walls of the gear seats (2).

2. The drill bit structure of the drilling machine according to claim 1, characterized in that the limiting block (3) is further provided with a shovel plate (32) perpendicular to the bottom end surface (11), and an included angle between the shovel plate (32) and the rotation direction of the cylindrical barrel (1) is greater than or equal to 90 °.

3. The drill bit structure of the drilling machine as claimed in claim 1 or 2, characterized in that a slag suction cavity (13) is arranged in the cylindrical barrel (1), the slag suction cavity (13) is close to the bottom end face (11), the plurality of gear seats (2) surround the bottom end face (11) to form a mounting area, a slag suction port (14) is arranged in the mounting area, the slag suction port (14) is communicated with the slag suction cavity (13), and the drill bit structure further comprises a return pipe (15), and the return pipe (15) penetrates through the top end face (12) and is communicated with the slag suction cavity (13).

4. A drill bit structure of a drilling machine according to claim 3, characterized in that a plurality of auxiliary roller drills (22) are also provided in the mounting area.

5. The drill bit structure of the drilling machine according to claim 4, characterized in that a plurality of counterweight cavities (16) are further arranged in the cylindrical barrel (1), the counterweight cavities (16) are close to the top end surface (12) and surround the circumference of the return pipe (15), and a discharge hole (17) communicated with the counterweight cavities (16) is arranged on the top end surface (12).

6. The drill bit structure of claim 5, characterized in that a plurality of protrusions (18) arranged along the circumference of the cylindrical barrel (1) are provided on the side wall of the cylindrical barrel (1) near the bottom end face (11).

7. Drill bit structure of a drilling machine according to claim 6, characterized in that the side wall of the cylinder (1) is sleeved with an elastic ring (19), the elastic ring (19) comprising an extension extending in the radial direction of the cylinder (1).

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