Diamond compact anchor rod drill bit

Abstract

The utility model discloses a diamond compact anchor rod drill bit which comprises a drill bit body, the drill bit body is of a spiral triangular structure, a drill rod connector is fixedly connected to the upper end of the drill bit body, threads corresponding to a drill rod are formed in the outer ring face of the drill rod connector, and transverse cutter grooves are formed in the outer ring face of the drill bit body from top to bottom in a circumferential array mode. The drill bit body is of a hollow structure, a through groove is formed in the middle of the triangular face of the drill bit body, the side edge of the through groove formed in the middle of the triangular face of the drill bit body is fixedly connected with a scraping plate of an arc-shaped structure, and the lower end of the drill bit body is fixedly connected with a grinding head through a fastening bolt. The outer ring face of the grinding head is fixedly connected with composite diamond patches in a circumferential array mode. When the drill bit is used, the multi-cutting-edge structure can grind and crush a hard rock stratum, the situation that the drill bit is broken due to the fact that the single-time impact strength is large is avoided, broken stone can be scraped away after grinding, the situation that the drilling efficiency is affected due to broken stone accumulation is avoided, and then the drilling depth of a single drill bit is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of exploration equipment, concretely is diamond compact anchor rod drill bit. BACKGROUND

[0002] When the coal mine roadway is excavated, the anchor rod drill bit plays a key role, and the performance of the drill bit directly relates to the drilling efficiency and drilling cost.

[0003] The existing diamond compact anchor rod drill bit, the diamond compact is planar, in actual use, the impact resistance of the diamond compact is low, and the diamond compact is easy to collapse when encountering a sandwich or hard rock layer, thereby affecting the drilling depth of the single drill bit, therefore, the diamond compact anchor rod drill bit is provided. UTILITY MODEL CONTENT

[0004] The utility model wants to solve the technical problem of overcoming the defects of the prior art, providing a diamond compact anchor rod drill bit, the multi-blade structure can be used to grind and break hard rock layers, avoid the drill bit from collapsing and being damaged due to a large single impact strength, and the broken stones can be removed after grinding to prevent the accumulation of broken stones from affecting the drilling efficiency, thereby improving the drilling depth of the single drill bit, and effectively solving the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a diamond compact anchor rod drill bit, including drill bit main part, the drill bit main part is spiral triangular structure, the upper end of the drill bit main part is fixedly connected with the drill rod joint, and the outer ring surface of the drill rod joint is provided with a thread corresponding to the drill rod, the outer ring surface of the drill bit main part is circumferentially arranged with horizontal knife grooves from top to bottom, the drill bit main part is a hollow structure, and a through groove is formed in the middle of the triangular surface of the drill bit main part, the side of the through groove formed in the middle of the triangular surface of the drill bit main part is fixedly connected with the arc-shaped structure of the scraping plate, the lower end of the drill bit main part is fixedly connected with the grinding head through the fastening bolt, and the outer ring surface of the grinding head is circumferentially fixedly connected with the composite diamond patch.

[0006] Further, it further includes a reinforcing rod and a connecting plate, the drill rod joint is a hollow structure, the inner surface of the drill rod joint is circumferentially fixedly connected with the connecting plate, and the inner side of the connecting plate is fixedly connected with the reinforcing rod, and the bottom surface of the reinforcing rod is fixedly connected with the inner bottom surface of the drill bit main part; the reinforcing rod and the connecting plate can effectively improve the overall strength of the drill bit, avoid the drill bit from being damaged due to vibration or a large impact, and achieve the purpose of prolonging the service life of the drill bit.

[0007] Further, still including limiting hole, the limiting hole is opened together with three, three limiting holes are opened in the upper surface three corners of the drill bit main part, and the limiting hole is correspondingly connected with the pin column of external drill rod; The connecting strength between the drill bit and the drill rod can be guaranteed by the limiting hole, and the normal use of the drill bit is affected by preventing the drill bit from separating or loosening with the drill rod.

[0008] Further, still including pin, the upper and lower sides of the surface of the composite diamond patch are respectively provided with pin holes, and the surface of the grinding head is provided with a counterbore corresponding to the pin hole, and the pin is connected in the pin hole and the counterbore; The stability of the connection between the composite diamond patch and the grinding head can be effectively improved by installing the pin, preventing the normal use of the drill bit from being affected by the loosening of the composite diamond patch.

[0009] Further, still including the conveying plate, the conveying plate is of a spiral structure, the conveying plate is fixedly connected to the inside of the drill bit main body, and the surface of the conveying plate is sprayed with a silicon carbide wear-resistant coating; The conveying plate can assist the drill bit in conveying stone, avoiding the accumulation of gravel and the decrease of conveying efficiency, and affecting the normal use of the equipment.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1、The drill bit can grind and break hard rock layers when in use, avoid damage caused by single impact strength, and can scrape off the gravel after grinding, prevent the accumulation of gravel from affecting the drilling efficiency, and further improve the drilling depth of a single drill bit.

[0012] 2、The reinforcing rod and the connecting plate can effectively improve the overall strength of the drill bit, avoid damage caused by vibration or impact, and prolong the service life of the drill bit.

[0013] 3、The limiting hole can guarantee the connecting strength between the drill bit and the drill rod, prevent the drill bit from separating or loosening from the drill rod, and affect the normal use of the drill bit. DETAILED DESCRIPTION

[0014] Figure 1 It is a structure schematic view of the utility model;

[0015] Figure 2 It is a structure schematic view of the utility model upper side view;

[0016] Figure 3 It is a structure schematic view of the utility model front side section;

[0017] Figure 4 It is a structure schematic view of the utility model front side section A enlarged structure.

[0018] In the figure: 1 drill rod joint, 2 reinforcing rod, 3 connecting plate, 4 drill bit main body, 5 limiting hole, 6 transverse cutter groove, 7 material scraping plate, 8 grinding head, 9 composite diamond patch, 10 fastening bolt, 11 pin, 12 conveying plate. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] Please refer to Figures 1-4 The embodiment provides a technical scheme: a diamond composite piece anchor rod drill bit, which comprises a drill bit main body 4, the drill bit main body 4 is a spiral triangle structure, the upper end of the drill bit main body 4 is fixedly connected with a drill rod joint 1, and the outer ring surface of the drill rod joint 1 is provided with threads corresponding to a drill rod, the outer ring surface of the drill bit main body 4 is provided with transverse cutter grooves 6 in a circumferential array from top to bottom, the drill bit main body 4 is a hollow structure, and a through groove is formed in the middle of the triangular surface of the drill bit main body 4, the side of the through groove formed in the middle of the triangular surface of the drill bit main body 4 is fixedly connected with an arc-shaped material scraping plate 7, the lower end of the drill bit main body 4 is fixedly connected with a grinding head 8 through a fastening bolt 10, and the outer ring surface of the grinding head 8 is fixedly connected with composite diamond patches 9 in a circumferential array.

[0021] In the embodiment, the drill rod joint 1 is a hollow structure, the inner surface of the drill rod joint 1 is fixedly connected with connecting plates 3 in a circumferential array, and the inner side of the connecting plate 3 is fixedly connected with a reinforcing rod 2, and the bottom surface of the reinforcing rod 2 is fixedly connected with the inner bottom surface of the drill bit main body 4; the reinforcing rod 2 and the connecting plate 3 can effectively improve the overall strength of the drill bit, avoid damage caused by vibration or impact of the drill bit, and achieve the purpose of prolonging the service life of the drill bit.

[0022] In the embodiment, the drill bit main body 4 is provided with three limiting holes 5, and the three limiting holes 5 are respectively formed in the middle of the upper surfaces of the three corners of the drill bit main body 4, and the limiting holes 5 are correspondingly clamped with the pin columns of the external drill rod; the limiting holes 5 can ensure the connecting strength between the drill bit and the drill rod, prevent the drill bit and the drill rod from being separated or loosened, and affect the normal use of the drill bit.

[0023] In the embodiment, the pin 11 is further included, pin holes are respectively formed on the upper and lower sides of the surface of the composite diamond patch 9, a counterbore corresponding to the pin holes is formed on the surface of the grinding head 8, and the pin 11 is clamped in the pin holes and the counterbore; the installed pin 11 can effectively improve the stability of the connection between the composite diamond patch 9 and the grinding head 8, and prevent the composite diamond patch 9 from loosening and affecting the normal use of the drill bit.

[0024] In the embodiment, the conveying plate 12 is further included, the conveying plate 12 is in a spiral structure, the conveying plate 12 is fixedly connected to the inside of the drill bit main body 4, and a silicon carbide wear-resistant coating is sprayed on the surface of the conveying plate 12; the set conveying plate 12 can assist the drill bit in conveying stones, so that the normal use of the equipment is not affected by the accumulation of the stones.

[0025] The working principle of the diamond composite patch anchor rod drill bit is as follows: the drill rod joint 1 is threadedly connected with the external drill rod, the drill bit is limited through the clamping between the telescopic pin column and the limiting hole 5 of the external drill rod after connection, so that the drill rod joint 1 is prevented from loosening, when drilling operation is performed, the rotation of the drill bit drives the composite diamond patch 9 to rotate, the composite diamond patch 9 cuts the surface of an object, when the drill bit penetrates, the transverse knife groove 6 formed on the side of the drill bit main body 4 cuts and reams the hole wall, the scrapers 7 scrape the cut stones and powders into the drill bit, and then the conveying plate 12 conveys the stones and powders to the outside through the hollow drill rod.

[0026] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A polycrystalline diamond compact drill bit, characterized by: The utility model provides a drill head, including drill head body (4), drill head body (4) is spiral triangle structure, the upper end of drill head body (4) is fixedly connected with drill rod joint (1), and the outer ring surface of drill rod joint (1) is set up with the thread corresponding with drill rod, the outer ring surface of drill head body (4) is set up with horizontal cutter groove (6) from above to below in circumferential array, drill head body (4) is hollow structure, and the middle part of the triangle face of drill head body (4) is set up with through slot, the side of the through slot set up in the middle part of the triangle face of drill head body (4) is fixedly connected with the arc structure's scraping plate (7), the lower end of drill head body (4) is fixedly connected with grinding head (8) through fastening bolt (10), and the outer ring surface of grinding head (8) is fixedly connected with composite diamond patch (9) in circumferential array.

2. The PDC bit according to claim 1, wherein: Still including reinforcing rod (2) and connecting plate (3), the inner surface of drill rod joint (1) is fixedly connected with connecting plate (3) in circumferential array, and the inner side end of connecting plate (3) is fixedly connected with reinforcing rod (2), and the bottom surface of reinforcing rod (2) is fixedly connected with the inside bottom surface of drill head body (4).

3. The PDC bit according to claim 1, wherein: Still including limiting hole (5), the limiting hole (5) is set up with three, three limiting holes (5) are set up in the middle part of the upper surface three angles of drill head body (4) respectively, and limiting hole (5) is correspondingly clamped with the pin post of external drill rod.

4. The PDC bit according to claim 1, wherein: Still including pin (11), the surface of composite diamond patch (9) is set up with pin hole on both sides, and the surface of grinding head (8) is set up with counterbore corresponding with pin hole, and pin (11) is clamped in the inside of pin hole and counterbore.

5. The PDC bit according to claim 1, wherein: Still including conveying plate (12), the conveying plate (12) is spiral structure, and the inside of drill head body (4) is fixedly connected with conveying plate (12), and the surface of conveying plate (12) is sprayed with silicon carbide wear-resistant coating.

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