PDC (Polycrystalline Diamond Compact) anchor rod drill bit

Abstract

The utility model discloses a PDC anchor rod drill bit which comprises a threaded rod, a drill bit body is arranged at the end of the threaded rod, the threaded rod and the drill bit body are integrally formed, a sliding groove is formed in the upper surface of the drill bit body, a moving seat is arranged at the position of the sliding groove, cutting teeth are arranged on the upper surface of the moving seat, and the cutting teeth are arranged in the sliding groove. And a cross seat is arranged on the side surface of the drill bit body. According to the utility model, the drill bit body is movably connected with the cutting teeth, so that when the drill bit is used for drilling holes with different hole diameters in a buried drill reaming process, the two groups of moving seats slide along the sliding chutes, the distance between the two groups of moving seats is adjusted, and the positions of the cutting teeth are further adjusted, so that the construction requirements of anchor rods under different drilling hole radiuses are adjusted; according to the drill bit, the drill bit does not need to be replaced, the use cost is reduced, the construction efficiency is improved, and the practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of anchor rod drill bit, especially a PDC anchor rod drill bit. BACKGROUND

[0002] The PDC anchor rod drill bit is a drill bit using diamond composite sheet technology, mainly used for anchor rod drilling operation. The PDC anchor rod drill bit combines diamond and hard alloy together through synthesis technology under high temperature and high pressure conditions, forming superhard material with high strength, wear resistance and impact resistance.

[0003] Through the search, the application number is: CN202221144367.7 a kind of composite sheet PDC anchor rod drill bit, it is related to the technical field of anchor rod drill bit, the utility model utilizes multiple short rods to realize drilling effect, through fixing ring and butt joint hole, the device can be fixedly connected, and the connection in the main cylinder is compared with conventional external connection, reduce the wear and tear of the connection in the drilling process, enhance the service life of the device.

[0004] The anchor rod drill bit in the above-mentioned utility model needs to replace drill bits of different models to meet different hole diameters when multiple hole diameters are needed during the embedding process, which is high in use cost and affects construction efficiency, and the practicality is general.

[0005] Therefore, we propose a PDC anchor rod drill bit to solve the above-mentioned drawbacks. UTILITY MODEL CONTENTS

[0006] The utility model aims to overcome the shortcomings of the prior art and provide a PDC anchor rod drill bit.

[0007] The utility model discloses a PDC anchor rod drill bit, which comprises a threaded rod, the end of the threaded rod is provided with a drill bit body, and the threaded rod and the drill bit body are integrally formed, a sliding groove is formed in the upper surface of the drill bit body, a moving seat is arranged at the sliding groove, and a chip tooth is arranged on the upper surface of the moving seat, a cross seat is arranged on the side surface of the drill bit body, a lead screw is fixed to the side surface of the cross seat and is in threaded connection with the drill bit body, a positioning block is arranged at the end of the lead screw and is attached to the moving seat.

[0008] Preferably, a material discharging groove is formed in the side surface of the drill bit body.

[0009] Preferably, a water inlet is arranged on the lower surface of the threaded rod, a water outlet is arranged on the upper surface of the drill bit body, and the water inlet and the water outlet are in through connection.

[0010] Preferably, the moving seat is provided with two groups, and the two groups of moving seats are symmetrically arranged about the center of the drill bit body.

[0011] Preferably, the moving seat and the chip tooth are integrally formed.

[0012] Preferably, the chip surface of the chip tooth is an arc surface.

[0013] The utility model has the advantages that: in the utility model, the drill bit body and the chip tooth adopt a movable connection mode, in the process of burying a drill and expanding a hole, when the hole diameter is different, the interval between the two moving seats is adjusted by sliding the two moving seats along the sliding groove, and then the position of the chip tooth is adjusted, so that the anchoring rod construction requirement under different hole diameters is adjusted, then the cross seat is rotated by using a screwdriver, the positioning block is tightly attached to the moving seat, and then the chip tooth is fixed, the utility model does not need to replace the drill bit, reduces the use cost, improves the construction efficiency, and is practical. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a top view structural schematic view of the utility model;

[0016] Fig. 3 It is a sliding groove internal structure schematic view of the utility model.

[0017] In the figure, 1 is a threaded rod, 2 is a drill bit body, 3 is a discharge chute, 4 is a water inlet, 5 is a water outlet, 6 is a sliding groove, 7 is a moving seat, 8 is a chip tooth, 9 is a cross seat, 10 is a lead screw, and 11 is a positioning block. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the utility model.

[0020] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] like Figs. 1-3 As shown, a PDC anchor drill bit includes a threaded rod 1, a drill bit body 2 at the end of the threaded rod 1, and the threaded rod 1 and the drill bit body 2 are integrally formed. A groove 6 is formed on the upper surface of the drill bit body 2, and a movable seat 7 is provided at the groove 6. The upper surface of the movable seat 7 is provided with cutting teeth 8. A cross seat 9 is provided on the side surface of the drill bit body 2. A lead screw 10 is fixed on the side surface of the cross seat 9 and is threadedly connected to the drill bit body 2. A positioning block 11 is provided at the end of the lead screw 10 and is fitted to the movable seat 7.

[0025] In one embodiment, the drill bit body 2 and the cutting teeth 8 are connected in a movable manner. During the drilling and reaming process, when dealing with holes of different diameters, the distance between the two sets of movable seats 7 is adjusted by sliding them along the slide groove 6, thereby adjusting the position of the cutting teeth 8 to meet the anchor bolt construction requirements under different drilling radii. Then, the cross seat 9 is rotated with a screwdriver to make the positioning block 11 fit tightly with the movable seat 7, thereby fixing the cutting teeth 8. This invention eliminates the need to replace the drill bit, reduces usage costs, improves construction efficiency, and is highly practical.

[0026] Specifically, the side surface of the drill bit body 2 is provided with a discharge groove 3.

[0027] In one embodiment, the discharge of the cutting waste is facilitated.

[0028] Specifically, the lower surface of the threaded rod 1 is provided with a water inlet 4, and the upper surface of the drill bit body 2 is provided with a water outlet 5, and the water inlet 4 and the water outlet 5 are connected through.

[0029] In one embodiment, the passage of cooling water is facilitated, and the drill bit is water-cooled to reduce use damage.

[0030] Specifically, the moving seat 7 is provided with two groups, and the two groups of moving seats 7 are symmetrically arranged about the center of the drill bit body 2.

[0031] In one embodiment, drilling is performed simultaneously, which can effectively improve the drilling efficiency.

[0032] Specifically, the moving seat 7 and the cutting tooth 8 are integrally formed.

[0033] In one embodiment, the overall mechanical energy is consistent, and the structural strength is significantly improved.

[0034] Specifically, the cutting surface of the cutting tooth 8 is an arc surface.

[0035] In one embodiment, the transition of the edge is relatively gentle, so that the occurrence of the phenomenon of bursting can be well prevented.

[0036] The working process of the utility model is as follows: in the process of burying the drill and expanding the hole, when drilling holes with different hole diameters, by sliding the two groups of moving seats 7 along the sliding groove 6, adjusting the distance between the two groups of moving seats 7, and then adjusting the position of the cutting tooth 8, the anchoring rod construction requirement under different drilling radii is adjusted, then the cross seat 9 is rotated by the screwdriver, the positioning block 11 is tightly attached to the moving seat 7, and then the cutting tooth 8 is fixed, the utility model does not need to replace the drill bit, reduces the use cost, improves the construction efficiency, and has high practicality.

[0037] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A PDC anchor drill bit comprising a threaded shank (1), characterized in that: The end of the threaded rod (1) is provided with a drill bit body (2), and the threaded rod (1) and the drill bit body (2) are integrally formed, the upper surface of the drill bit body (2) is provided with a sliding groove (6), the sliding groove (6) is provided with a moving seat (7), the upper surface of the moving seat (7) is provided with a chip tooth (8), the side surface of the drill bit body (2) is provided with a cross seat (9), the side surface of the cross seat (9) is fixedly provided with a lead screw (10), the lead screw (10) is threadedly connected with the drill bit body (2), the end of the lead screw (10) is provided with a positioning block (11), and the positioning block (11) is arranged in abutment with the moving seat (7).

2. A PDC anchor drill bit according to claim 1, wherein: The side surface of the drill bit body (2) is provided with a material discharging groove (3).

3. The PDC anchor drill bit of claim 1, wherein: The lower surface of the threaded rod (1) is provided with a water inlet (4), the upper surface of the drill bit body (2) is provided with a water outlet (5), and the water inlet (4) and the water outlet (5) are in through connection.

4. The PDC anchor drill bit of claim 1, wherein: The moving seat (7) is provided with two groups, and the two groups of moving seats (7) are symmetrically arranged about the center of the drill bit body (2).

5. The PDC anchor drill bit of claim 1, wherein: The moving seat (7) and the chip tooth (8) are integrally formed.

6. The PDC anchor drill bit of claim 1, wherein: The chip surface of the chip tooth (8) is an arc surface.

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