Cutting type cutting tooth socketed pile drill bit

Abstract

The utility model discloses a cutting type cutting tooth socketed pile drill bit which comprises a drill bit seat and is characterized in that a drill bit main body is assembled at the bottom end of the drill bit seat and comprises a drill tip, a hollow drill pipe, side wings, rib plates, cutting teeth and a circular ring; the hollow drill pipe is sleeved with the circular ring, and the drill tip is assembled at the bottom end of the hollow drill pipe. The ring is connected with the hollow drill pipe through a rib plate and is connected with the drill tip through a side wing; cutting teeth are assembled at the bottom of the drill tip, the middle parts of the side wings and the upper part of the ring; alloy ends are assembled at the end parts of the cutting teeth, and alloy points are arranged on the outer walls of the alloy ends; according to the cutting type cutting tooth socketed pile drill bit, the perpendicularity of formed holes is guaranteed; meanwhile, the cutting tooth drill bits with fixed cutting angles at the bottom, the side wings and the like are used for breaking rocks, line contact of a common scraper drill bit is improved into point contact of the cutting tooth drill bits, the pressure intensity is increased, the overall cutting capacity is improved, meanwhile, limitation of the diameter of a drilled hole is avoided, and different pile diameter requirements can be met by additionally installing the cutting tooth drill bits.

Description

Technical Field

[0001] This patent relates to the field of pile foundation engineering technology, specifically a cutting type pick rock-embedded pile drill bit. Background Art

[0002] Rock-embedded cast-in-place piles, as a special type of bored cast-in-place piles, are widely used in pile foundation projects with rock-embedded requirements in mountainous areas.

[0003] The common rock-embedded pile drill bits on the market are scraper cone drill bits and roller drill bits. Scraper cone drill bits are generally only suitable for drilling in loose, broken, and low-strength strongly weathered rock formations. They have weak rock penetration capabilities and are prone to getting stuck when drilling in strongly weathered rock formations, which cannot meet the requirements of rock-embedded construction. Roller drill bits can meet the requirements of drilling in rock formations with relatively higher rock strengths, and their rock penetration capabilities are enhanced. However, when the rock strength reaches a certain limit, the drilling speed will become extremely slow and inefficient, which has a greater impact on the construction period. In addition, due to their high cost and poor economic efficiency, they are not conducive to construction cost control, so there is a need to improve the existing technology. Utility Model Content

[0004] The purpose of this patent is to provide a cutting type pick rock pile drill bit to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, this patent provides the following technical solutions: a cutting type pick rock pile drill bit, comprising a drill bit seat, the bottom end of which is equipped with a drill bit body, the drill bit body comprising a drill tip, a hollow drill pipe, a flank, a rib plate, a pick and a ring;

[0006] The annular ring is sleeved on the outside of the hollow drill pipe, and the drill tip is assembled on the bottom end of the hollow drill pipe;

[0007] The circular ring is connected to the hollow drill pipe via ribs, and the circular ring is connected to the drill tip via flanks;

[0008] The bottom of the drill tip, the middle of the side wing and the upper part of the ring are all equipped with picks;

[0009] The end of the pick is equipped with an alloy end head, and the outer wall of the alloy end head is provided with an alloy point;

[0010] The pick on the drill tip forms a cutting angle of 36 degrees with the center line of the hollow drill pipe, the pick on the flank forms a cutting angle of 45 degrees with the center line of the hollow drill pipe, and are centrally symmetrical about the center line of the hollow drill pipe, and the pick on the ring forms a cutting angle of 42 degrees with the center line of the hollow drill pipe, and are centrally symmetrical about the center line of the hollow drill pipe.

[0011] Preferably, the hollow drill pipe is connected to the drill bit seat via a connecting piece, and the connecting piece includes a clamp, a U-shaped groove, a bolt and a nut;

[0012] The clamp is sleeved on the drill bit seat, the clamp is sleeved on the top of the hollow drill pipe, the U-shaped groove is opened at a protrusion on one side of the clamp, the bolt passes through the U-shaped groove, and the nut is sleeved on the bolt.

[0013] Preferably, a circular groove is formed on the internal thread of the nut, a circular piece is placed in the circular groove, a threaded hole is formed on the circular piece, and the bolt is sleeved in the threaded hole.

[0014] Preferably, a clamping slot is provided on the circular groove, a clamping block is installed on the circular member, and the clamping block is clamped in the clamping slot.

[0015] Preferably, the hollow drill pipe and the clamp are limited by a limiting structure, the number of the limiting structures is not less than four, the limiting structures are distributed in an annular shape with equal distances, and the limiting structure includes a limiting block and a limiting groove;

[0016] The limit block is installed on the hollow drill pipe, the limit groove is arranged on the clamp, and the limit block is clamped in the limit groove.

[0017] Preferably, the number of the picks is 8, 4 of which are arranged on the drill tip and 2 on each flank.

[0018] Preferably, the number of the picks is 10, 4 of which are arranged on the drill tip and 3 on each flank.

[0019] Preferably, the number of the picks is 12, 4 of which are arranged on the drill tip, 3 on each flank, and 2 on the ring.

[0020] Compared with the prior art, the beneficial effects of this patent are: the cutting type pick rock pile drill bit has a reasonable structural design;

[0021] 1. When drilling with a cutting-type pick cone drill bit, the cone structure head is used for point guidance to avoid deviation during drilling and ensure the verticality of the hole. At the same time, the pick drill bit with a fixed cutting angle at the bottom and flanks is used to break the rock, and the line contact of the ordinary scraper drill bit is improved to the point contact of the pick drill bit, which increases the pressure and improves the overall cutting ability. At the same time, it is not limited by the diameter of the borehole and can meet the requirements of different pile diameters by adding a pick drill bit.

[0022] It is suitable for rapid drilling construction in strongly weathered rock strata and moderately weathered rock strata with certain cracks;

[0023] 2. When the clamp is put on the hollow drill pipe, the limit groove covers the limit block. At the same time, the clamp is put on the drill bit seat. The round part is put into the round groove, and the block is inserted into the groove. The bolt passes through the U-shaped groove on the clamp. The nut is screwed on the bolt, and the bolt is screwed into the threaded hole on the round part, so that the nut and the bolt are doubly imprisoned, thereby enhancing the stability of the clamp in connecting the hollow drill pipe and the drill bit seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the drill bit body of the first embodiment of this patent;

[0025] Figure 2 This is a schematic diagram of the drill bit body of the second embodiment of this patent;

[0026] Figure 3 This is a schematic diagram of the drill bit body of the third embodiment of this patent;

[0027] Figure 4 This is a schematic diagram of the pick of this patent;

[0028] Figure 5 This is a schematic diagram of the connection between the drill bit body and the drill bit seat of this patent;

[0029] Figure 6 This is a schematic diagram of the bolt of this patent.

[0030] In the figure: 1 hollow drill pipe, 2 circular ring, 3 flank, 4 rib, 5 drill tip, 6 pick, 7 alloy point, 8 alloy end, 9 drill seat, 10 U-shaped groove, 11 bolt, 12 nut, 13 circular groove, 14 circular part, 15 threaded hole, 16 clamping groove, 17 clamping block, 18 clamping hoop, 19 limit block, 20 limit groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0032] See also Figure 1-6 , this patent provides the first technical solution:

[0033] In the technical scheme, a cutting type pick rock-embedded pile drill bit comprises a drill bit seat 9, the bottom end of which is equipped with a drill bit body, the drill bit body comprising a drill tip 5, a hollow drill pipe 1, a wing 3, a rib plate 4, a pick 6 and a ring 2, and the drill bit seat 9 is used to be installed on the driving end of the pile driver;

[0034] The ring 2 is sleeved on the outside of the hollow drill pipe 1, and the drill tip 5 is assembled on the bottom end of the hollow drill pipe 1;

[0035] The ring 2 is connected to the hollow drill pipe 1 via a rib 4, and the ring 2 is connected to the drill tip 5 via a flank 3;

[0036] The bottom of the drill tip 5, the middle of the flank 3 and the upper part of the ring 2 are all equipped with picks 6;

[0037] The end of the pick 6 is equipped with an alloy end 8, and the outer wall of the alloy end 8 is provided with an alloy point 7;

[0038] The pick 6 on the drill tip 5 forms a cutting angle of 36 degrees with the center line of the hollow drill pipe 1, the pick 6 on the flank 3 forms a cutting angle of 45 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1, and the pick 6 on the ring 2 forms a cutting angle of 42 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1.

[0039] In some technical solutions, reference Figure 1-4 The hollow drill pipe 1 is connected to the drill bit seat 9 by a connecting piece, and the connecting piece includes a clamp 18, a U-shaped groove 10, a bolt 11 and a nut 12;

[0040] The clamp 18 is sleeved on the drill bit seat 9, the clamp 18 is sleeved on the top of the hollow drill pipe 1, the U-shaped groove 10 is opened at the protrusion on one side of the clamp 18, the bolt 11 passes through the U-shaped groove 10, and the nut 12 is sleeved on the bolt 11;

[0041] The inner thread of the nut 12 is provided with a circular groove 13, a circular piece 14 is placed in the circular groove 13, a threaded hole 15 is provided on the circular piece 14, and the bolt 11 is sleeved in the threaded hole 15;

[0042] The circular groove 13 is provided with a clamping groove 16, and the circular member 14 is provided with a clamping block 17, which is clamped in the clamping groove 16;

[0043] The hollow drill pipe 1 and the clamp 18 are limited by a limiting structure, the number of the limiting structures is not less than four, the limiting structures are distributed in an annular shape with equal distances, and the limiting structure includes a limiting block 19 and a limiting groove 20;

[0044] The limit block 19 is installed on the hollow drill pipe 1 , the limit groove 20 is provided on the clamp 18 , and the limit block 19 is clamped in the limit groove 20 .

[0045] In this technical solution, the clamp 18 is put on the hollow drill pipe 1, and the limit groove 20 covers the limit block 19. At the same time, the clamp 18 is put on the drill bit seat 9, the circular part 14 is put into the circular groove 13, and the block 17 is clamped into the clamping groove 16, so that the bolt 11 passes through the U-shaped groove 10 on the clamp 18, and the nut 12 is screwed on the bolt 11, and the bolt 11 is screwed into the threaded hole 15 on the circular part 14, so that the nut 12 and the bolt 11 are doubly locked, thereby enhancing the stability of the connection between the hollow drill pipe 1 and the drill bit seat 9 by the clamp 18.

[0046] The drill bit is suitable for rock-embedded piles with a pile diameter of 600, and the number of the picks 6 is 8, 4 of which are arranged on the drill tip 5 and 2 on each flank 3.

[0047] Working principle: When drilling, the cutting-type pick cone drill bit uses the cone structure head for point guidance, and uses the pick drill bit with fixed cutting angles at the drill tip, flanks, bottom, middle and top of the ring to break the rock.

[0048] See also Figure 1-6 , this patent provides a second technical solution:

[0049] In the technical scheme, a cutting type pick rock-embedded pile drill bit comprises a drill bit seat 9, the bottom end of which is equipped with a drill bit body, the drill bit body comprising a drill tip 5, a hollow drill pipe 1, a wing 3, a rib plate 4, a pick 6 and a ring 2, and the drill bit seat 9 is used to be installed on the driving end of the pile driver;

[0050] The ring 2 is sleeved on the outside of the hollow drill pipe 1, and the drill tip 5 is assembled on the bottom end of the hollow drill pipe 1;

[0051] The ring 2 is connected to the hollow drill pipe 1 via a rib 4, and the ring 2 is connected to the drill tip 5 via a flank 3;

[0052] The bottom of the drill tip 5, the middle of the flank 3 and the upper part of the ring 2 are all equipped with picks 6;

[0053] The end of the pick 6 is equipped with an alloy end 8, and the outer wall of the alloy end 8 is provided with an alloy point 7;

[0054] The pick 6 on the drill tip 5 forms a cutting angle of 36 degrees with the center line of the hollow drill pipe 1, the pick 6 on the flank 3 forms a cutting angle of 45 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1, and the pick 6 on the ring 2 forms a cutting angle of 42 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1.

[0055] The drill bit is suitable for rock-embedded piles with a pile diameter of 700. The number of the picks 6 is 10, 4 of which are arranged on the drill tip 5 and 3 on each flank 3.

[0056] See also Figure 1-6 , this patent provides a second technical solution:

[0057] In the technical scheme, a cutting type pick rock-embedded pile drill bit comprises a drill bit seat 9, the bottom end of which is equipped with a drill bit body, the drill bit body comprising a drill tip 5, a hollow drill pipe 1, a wing 3, a rib plate 4, a pick 6 and a ring 2, and the drill bit seat 9 is used to be installed on the driving end of the pile driver;

[0058] The ring 2 is sleeved on the outside of the hollow drill pipe 1, and the drill tip 5 is assembled on the bottom end of the hollow drill pipe 1;

[0059] The ring 2 is connected to the hollow drill pipe 1 via a rib 4, and the ring 2 is connected to the drill tip 5 via a flank 3;

[0060] The bottom of the drill tip 5, the middle of the flank 3 and the upper part of the ring 2 are all equipped with picks 6;

[0061] The end of the pick 6 is equipped with an alloy end 8, and the outer wall of the alloy end 8 is provided with an alloy point 7;

[0062] The pick 6 on the drill tip 5 forms a cutting angle of 36 degrees with the center line of the hollow drill pipe 1, the pick 6 on the flank 3 forms a cutting angle of 45 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1, and the pick 6 on the ring 2 forms a cutting angle of 42 degrees with the center line of the hollow drill pipe 1, and is centrally symmetrical about the center line of the hollow drill pipe 1.

[0063] Among them, the rock-embedded pile drill bit suitable for 800 pile diameter has 12 picks 6 , 4 of which are arranged on the drill tip 5 , 3 on each flank 3 , and 2 on the ring 2 .

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although the present invention has been described above with reference to the embodiments, various modifications may be made to the embodiments and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in the present specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cutting pick rock pile drill bit, comprising a drill bit seat (9), characterized in that: The bottom end of the drill bit seat (9) is equipped with a drill bit body, and the drill bit body comprises a drill tip (5), a hollow drill tube (1), side wings (3), ribs (4), pick teeth (6) and a ring (2); The circular ring (2) is sleeved on the outside of the hollow drill pipe (1), and the drill tip (5) is assembled on the bottom end of the hollow drill pipe (1); The circular ring (2) is connected to the hollow drill pipe (1) via a rib plate (4), and the circular ring (2) is connected to the drill tip (5) via a side wing (3); The bottom of the drill tip (5), the middle of the side wing (3) and the upper part of the ring (2) are all equipped with pick teeth (6); The end of the pick (6) is equipped with an alloy end head (8), and the outer wall of the alloy end head (8) is provided with an alloy point (7); The pick (6) on the drill tip (5) forms a cutting angle of 36 degrees with the center line of the hollow drill pipe (1), the pick (6) on the flank (3) forms a cutting angle of 45 degrees with the center line of the hollow drill pipe (1), and is centrally symmetrical with respect to the center line of the hollow drill pipe (1), and the pick (6) on the ring (2) forms a cutting angle of 42 degrees with the center line of the hollow drill pipe (1), and is centrally symmetrical with respect to the center line of the hollow drill pipe (1).

2. A cutting pick rock-socketed pile drill bit according to claim 1, characterized in that: The hollow drill pipe (1) and the drill bit seat (9) are connected via a connecting piece, and the connecting piece comprises a clamp (18), a U-shaped groove (10), a bolt (11) and a nut (12); The clamp (18) is sleeved on the drill bit seat (9), and the clamp (18) is sleeved on the top of the hollow drill pipe (1), the U-shaped groove (10) is opened at a protrusion on one side of the clamp (18), the bolt (11) passes through the U-shaped groove (10), and the nut (12) is sleeved on the bolt (11).

3. A cutting pick rock-socketed pile drill bit according to claim 2, characterized in that: A circular groove (13) is formed on the internal thread of the nut (12), a circular piece (14) is placed in the circular groove (13), a threaded hole (15) is formed on the circular piece (14), and the bolt (11) is sleeved in the threaded hole (15).

4. A cutting pick rock-embedded pile drill bit according to claim 3, characterized in that: The circular groove (13) is provided with a clamping groove (16), the circular member (14) is provided with a clamping block (17), and the clamping block (17) is clamped in the clamping groove (16).

5. The cutting pick rock-socketed pile drill bit according to claim 1, characterized in that: The hollow drill pipe (1) and the clamp (18) are limited by a limiting structure, the number of the limiting structures is not less than four, the limiting structures are distributed in an annular shape and are equidistant, and the limiting structure comprises a limiting block (19) and a limiting groove (20); The limit block (19) is installed on the hollow drill pipe (1), the limit groove (20) is provided on the clamp (18), and the limit block (19) is clamped in the limit groove (20).

6. A cutting pick rock-socketed pile drill bit according to claim 1, characterized in that: The number of the pick teeth (6) is 8, 4 of which are arranged on the drill tip (5) and 2 on each wing (3).

7. The cutting pick rock-socketed pile drill bit according to claim 1, characterized in that: The number of the pick teeth (6) is 10, 4 of which are arranged on the drill tip (5) and 3 on each wing (3).

8. The cutting pick rock-socketed pile drill bit according to claim 1, characterized in that: The number of the pick teeth (6) is 12, 4 of which are arranged on the drill tip (5), 3 on each wing (3), and 2 on the ring (2).

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