Guide grouting drill bit structure of drilling machine

Abstract

The utility model relates to a guide grouting drill bit structure of a drilling machine in the technical field of drill bits, the bottom end of a drill bit is fixedly provided with a spherical tooth hob used for cutting rock, and an anti-blocking device comprises a crushing assembly which is arranged in a drill rod body and used for crushing rock slag entering the drill rod body. A first supporting assembly used for supporting the crushing assembly is arranged at the top end of the crushing assembly, and a second supporting assembly used for supporting the crushing assembly is arranged below the first supporting assembly. The drill rod body drives the four spherical tooth hobs and the auxiliary rolling balls at the bottom end of the drill bit to cut a rock stratum to generate rock slag, and the generated rock slag can be lifted upwards along the drill rod body, so that the rock slag is discharged into the drill rod body and is discharged outwards through the top end of the drill rod body; and when the rotating shaft rotates, the spiral crushing cutter can be driven to crush rock slag generated by cutting of the four spherical tooth hobs, so that a slag inlet in the bottom end of the drill rod body is prevented from being blocked by larger rock slag.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a guide grouting drill bit structure of a drilling rig. Background Art

[0002] During the pile hole construction of foundation construction, the drill bit of the drilling rig will produce mud residue when drilling, so an air lift reverse circulation drilling rig is usually used to send the mud carrying a large amount of rock residue upward to the outside of the pile hole through the hollow slag discharge channel in the drill pipe, so as to clean up the rock residue in the pile hole. For example, as shown in the drill bit structure and drilling rig of Chinese patent application number CN202020133719.3, the outer wall of the drill pipe is provided with a spiral blade extending along the length direction of the drill pipe; the reamer is hinged on the outer wall of the drill pipe, and the reamer includes a rear end and a front end; the front end of the reamer can extend and be fixed outside the outer edge of the spiral blade when the drill pipe is reversed, and retract to between the outer edge of the spiral blade and the outer wall of the drill pipe when the drill pipe is rotated forward.

[0003] However, during the air lift reverse circulation operation of the drilling rig, the mud is lifted by air and flows from the slag discharge hole into the hollow slag discharge channel in the drill pipe. At this time, the mud at the bottom of the pile hole generally carries a large amount of rock slag of different sizes. When the mass of the rock slag is too large, it is very easy for the rock slag to be difficult to discharge in the drill pipe, resulting in poor slag discharge effect. Utility Model Content

[0004] In order to solve the problem that in the working process of the drilling rig in the air lift reverse circulation, the mud is lifted by air from the slag discharge hole into the hollow slag discharge channel in the drill pipe. At this time, the mud at the bottom of the pile hole generally carries a large amount of rock slag of different sizes. When the mass of the rock slag is too large, it is very easy to be difficult to discharge the rock slag in the drill pipe, resulting in poor slag discharge effect. The utility model provides the following technical solutions:

[0005] A guide grouting drill bit structure of a drilling rig comprises a drill rod body for rotation, a drill bit device for cutting rocks is arranged at the bottom end of the drill rod body, and an anti-blocking device for crushing rock debris is arranged inside the drill rod body.

[0006] The anti-blocking device includes a crushing assembly arranged in the drill rod body for crushing rock debris entering the drill rod body, a support assembly 1 for supporting the crushing assembly is arranged at the top of the crushing assembly, and a support assembly 2 for supporting the crushing assembly is arranged below the support assembly 1.

[0007] Furthermore, the drill bit device includes a drill bit fixedly mounted on the bottom end of the drill rod body, and a ball tooth cutter for cutting rocks is fixedly mounted on the bottom end of the drill bit, and there are four ball tooth cutters distributed in a circular array at the bottom end of the drill bit.

[0008] Furthermore, an auxiliary rolling ball for assisting the ball tooth cutter to cut the rock is fixedly mounted at the bottom end of the drill bit, and there are four auxiliary rolling balls, which are distributed in a circular array at the bottom end of the drill bit.

[0009] Furthermore, the crushing assembly comprises a rotating shaft arranged in the drill rod body for rotation, and a spiral crushing cutter for crushing rock debris is fixedly mounted on the rod body of the rotating shaft.

[0010] Furthermore, the support assembly includes a support plate arranged at the top end of the rotating shaft for supporting the rotating shaft, and a support rod 1 for supporting the support plate is fixedly installed on the plate body of the support plate, and there are three support rods 1, which are distributed in a circular array on the plate body of the support plate.

[0011] Furthermore, the support component 2 includes a truncated table arranged on a rotating shaft, and the truncated table is located above the spiral crushing knife, and a support rod 2 for supporting the truncated table is fixedly installed on the table body of the truncated table, and there are three support rods 2, which are distributed in a circular array on the plate body of the support rod 2.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By setting up a drill bit device and an anti-blocking device, the drill rod body drives the four ball-toothed rollers and auxiliary balls on the bottom end of the drill bit to cut the rock layer to produce rock slag, and the produced rock slag will be lifted upward along the drill rod body, thereby discharging the rock slag into the drill rod body and then discharged outward through the top of the drill rod body; and when the shaft rotates, it can drive the spiral crushing cutter to crush the rock slag produced by the cutting of the four ball-toothed rollers, so as to prevent larger rock slag from clogging the slag inlet at the bottom end of the drill rod body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a structural schematic diagram of the drill bit device of the utility model;

[0018] Figure 3 This is a cross-sectional view of the drill pipe body of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the anti-blocking device of the utility model.

[0020] In the accompanying drawings, the names of the components represented by the reference numerals are listed as follows:

[0021] 100-drill pipe body;

[0022] 200-drilling device, 210-drilling bit, 220-ball tooth hob, 230-auxiliary rolling ball;

[0023] 300 - anti-blocking device, 310 - support component one, 311 - support plate, 312 - support rod one, 320 - crushing component, 321 - rotating shaft, 322 - spiral crushing knife, 330 - support component two, 331 - round table, 332 - support rod two. DETAILED DESCRIPTION

[0024] The preferred specific implementation methods for implementing the present utility model are described in detail below, and a clear and complete description is made in conjunction with the accompanying drawings.

[0025] See also Figure 1-Figure 4 The utility model provides a guide grouting drill bit structure of a drilling rig.

[0026] The drill rod body 100 includes a drill rod body 100 for rotation. A drill bit device 200 for cutting rocks is arranged at the bottom end of the drill rod body 100. An anti-blocking device 300 for crushing rock debris is arranged inside the drill rod body 100.

[0027] The drill bit device 200 includes a drill bit 210 fixedly mounted on the bottom end of the drill rod body 100, so that the drill bit 210 can be driven to rotate synchronously with the rotation of the drill rod body 100; a ball-tooth cutter 220 for cutting rocks is fixedly mounted on the bottom end of the drill bit 210, and there are four ball-tooth cutters 220, which are distributed in a circular array at the bottom end of the drill bit 210; an auxiliary rolling ball 230 for assisting the ball-tooth cutter 220 in cutting rocks is fixedly mounted on the bottom end of the drill bit 210, and there are four auxiliary rolling balls 230, which are distributed in a circular array at the bottom end of the drill bit 210, so that when the drill rod body 100 rotates, the four ball-tooth cutters 220 and the auxiliary rolling balls 230 can be driven to cut the rock formation to produce rock slag, and the produced rock slag will be lifted upward along the drill rod body 100, so as to discharge the rock slag out of the pile hole.

[0028] The anti-blocking device 300 includes a crushing assembly 320 arranged in the drill pipe body 100 for crushing the rock debris entering the drill pipe body 100, and the crushing assembly 320 can rotate synchronously with the drill pipe body 100; a support assembly 1 310 for supporting the crushing assembly 320 is arranged at the top of the crushing assembly 320, and a support assembly 2 330 for supporting the crushing assembly 320 is arranged below the support assembly 1 310.

[0029] The crushing assembly 320 includes a rotating shaft 321 arranged in the drill pipe body 100 for rotation, and a spiral crushing knife 322 for crushing rock debris is fixedly installed on the rod body of the rotating shaft 321; therefore, when the rotating shaft 321 rotates, the spiral crushing knife 322 can be driven to crush the rock debris produced by cutting the four ball tooth rollers 220 to prevent larger rock debris from clogging the debris inlet at the bottom end of the drill pipe body 100.

[0030] The support assembly 310 includes a support plate 311 arranged at the top end of the rotating shaft 321 for supporting the rotating shaft 321, and the plate body of the support plate 311 is connected to the rotating shaft 321 through a bearing to facilitate the rotation of the rotating shaft 321; a support rod 312 for supporting the support plate 311 is fixedly installed on the plate body of the support plate 311, and there are three support rods 312, which are distributed in a circular array on the plate body of the support plate 311, and the three support rods 312 are welded to the inner wall of the drill pipe body 100.

[0031] The support assembly 2 330 includes a truncated table 331 disposed on the rotating shaft 321, and the truncated table 331 is located above the spiral crushing knife 322. A support rod 2 332 for supporting the truncated table 331 is fixedly installed on the table body of the truncated table 331, and there are three support rods 2 332, which are distributed in a circular array on the plate body of the support rod 2 332, and the three support rods 2 332 are welded to the inner wall of the drill rod body 100; thereby the drill rod body 100 drives the drill bit The four ball-toothed rollers 220 and the auxiliary balls 230 at the bottom of 210 cut the rock formation to produce rock slag, and the produced rock slag will be lifted upward along the drill rod body 100, thereby discharging the rock slag into the drill rod body 100 and then discharged outward through the top of the drill rod body 100; and when the rotating shaft 321 rotates, it can drive the spiral crushing knife 322 to crush the rock slag produced by the cutting of the four ball-toothed rollers 220 to prevent larger rock slag from clogging the slag inlet at the bottom of the drill rod body 100.

[0032] Based on the above content and the accompanying drawings, those skilled in the art can understand and implement the utility model. In addition, any non-creative modifications made to the utility model by those skilled in the art without making creative work still fall within the scope of protection of the utility model.

Claims

1. A guide grouting drill bit structure for a drilling rig, comprising a drill rod body (100) for rotation, characterized in that: A drill bit device (200) for cutting rocks is provided at the bottom end of the drill rod body (100), and an anti-blocking device (300) for crushing rock debris is provided inside the drill rod body (100); The anti-blocking device (300) comprises a crushing assembly (320) arranged in a drill pipe body (100) for crushing rock debris entering the drill pipe body (100); a support assembly 1 (310) for supporting the crushing assembly (320) is arranged at the top of the crushing assembly (320); and a support assembly 2 (330) for supporting the crushing assembly (320) is arranged below the support assembly 1 (310).

2. The guide grouting drill bit structure of a drilling rig according to claim 1, characterized in that: The drill bit device (200) comprises a drill bit (210) fixedly mounted on the bottom end of a drill rod body (100), and a ball tooth cutter (220) for cutting rocks is fixedly mounted on the bottom end of the drill bit (210), and there are four ball tooth cutters (220), which are distributed in a circular array at the bottom end of the drill bit (210).

3. The guide grouting drill bit structure of a drilling rig according to claim 2, characterized in that: An auxiliary rolling ball (230) for assisting the ball tooth cutter (220) in cutting rocks is fixedly mounted at the bottom end of the drill bit (210), and there are four auxiliary rolling balls (230). The four auxiliary rolling balls (230) are distributed in a circular array at the bottom end of the drill bit (210).

4. The guide grouting drill bit structure of a drilling rig according to claim 1, characterized in that: The crushing assembly (320) comprises a rotating shaft (321) arranged in a drill rod body (100) for rotation, and a spiral crushing cutter (322) for crushing rock debris is fixedly mounted on the rod body of the rotating shaft (321).

5. The guide grouting drill bit structure of a drilling rig according to claim 4, characterized in that: The support assembly (310) comprises a support plate (311) arranged at the top end of the rotating shaft (321) for supporting the rotating shaft (321); a support rod (312) for supporting the support plate (311) is fixedly mounted on the plate body of the support plate (311); and there are three support rods (312), which are distributed in a circular array on the plate body of the support plate (311).

6. The guide grouting drill bit structure of a drilling rig according to claim 4, characterized in that: The support assembly 2 (330) includes a truncated table (331) arranged on the rotating shaft (321), and the truncated table (331) is located above the spiral crushing knife (322), and a support rod 2 (332) for supporting the truncated table (331) is fixedly installed on the table body of the truncated table (331), and there are three support rods 2 (332), and the three support rods 2 (332) are distributed in a circular array on the plate body of the support rod 2 (332).

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