Mine blast hole opening drill bit structure

Abstract

The utility model discloses a mine blast hole opening drill bit structure, which relates to the technical field of mine blasting and comprises a drill bit main rod, a drill bit main body is arranged at the upper end of the drill bit main rod, fixing seats are arranged at the upper end of the drill bit main body in four directions, fixing plates are arranged in the fixing seats, cutter heads are arranged at the outer side ends of the fixing plates, and the cutter heads are arranged at the outer side ends of the cutter heads. A cleaning groove is formed in the position, between every two adjacent fixing bases, of the side wall of the drill bit main body, fixing bevels are arranged in the cleaning grooves and located on the two sides of the fixing bases, a cooling water groove is formed in the middle position between the drill bit main rod and the drill bit main body in a penetrating mode in the vertical direction, and a nozzle is arranged at the upper end of the cooling water groove; the working temperature of the drill bit is reduced, the temperature of the drill bit is maintained, a nozzle is arranged on the drill bit, blockage of a cold water hole is rapidly cleaned by disassembling the nozzle, and abrasion aggravation caused by overheating of the drill bit is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of mine blasting, in particular to a mine blasting hole drilling drill bit structure. Background Art

[0002] Mining blasting refers to a technique that uses explosives or other blasting materials to break rocks or ores during mining. It is one of the commonly used methods in mining, especially in the mining of hard rock deposits. A series of holes are formed in the rock or ore body to facilitate the loading of explosives. The layout, depth, diameter and spacing of these holes are determined according to the blasting design plan to ensure the best blasting effect while minimizing damage to the surrounding environment and facilities. When the existing blasting drill bit is in use, the temperature of the drill bit rises sharply due to the friction between the drill bit and the stone wall of the pit. The cold water hole set in the general drill bit is easy to be blocked during the drilling. The blocked waterway causes the drill bit to overheat and aggravate the wear. Utility Model Content

[0003] The purpose of the utility model is to provide a drill bit structure for drilling a mine blasting hole, so as to solve the problem that the existing blasting hole drilling drill bit proposed in the above background technology, when in use, the friction between the drill bit and the pit stone wall causes the drill bit temperature to rise sharply, and the cold water holes provided in the general drill bit are easily blocked during drilling, and the blocked water channel causes the drill bit to overheat and aggravate wear.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mine blasting hole drilling drill structure, comprising a drill main rod, a drill main body is provided at the upper end of the drill main rod, a fixed seat is provided in four directions of the upper end of the drill main body, a fixed plate is provided inside the fixed seat, a cutter head is provided at the outer end of the fixed plate, a cleaning groove is provided on the side wall of the drill main body and between two adjacent fixed seats, a fixed bevel is provided inside the cleaning groove and on both sides of the fixed seat, a cooling water trough is provided in the upper and lower directions of the middle position between the drill main rod and the drill main body, a nozzle is provided at the upper end of the cooling water trough, and a secondary water channel is connected between the middle position of the cleaning groove and the cooling water trough.

[0005] Preferably, the upper outer surfaces of the four fixing seats form a semi-spherical structure, the upper outer surface of the fixing plate is also a semi-spherical structure like the fixing seat, the outer surface of the fixing plate is arranged corresponding to the outer end of the fixing seat, and a limiting bevel is provided below the inner end of the fixing plate, and the limiting bevel is against the inside of the fixing seat.

[0006] Preferably, a nozzle fixing seat is provided at the upper end of the drill body and between the four fixing plates, the nozzle is connected to the nozzle fixing seat via a thread, and the upper end of the nozzle is arranged at the lower end between the four fixing plates.

[0007] Preferably, the cutter head is a cylindrical structure, one side of the cutter head is embedded into the inner side of the fixing plate, and the outer end of the cutter head extends out of the outside of the drill body.

[0008] Preferably, a reinforced bevel is provided between the drill bit main rod and the drill bit body.

[0009] Compared with the prior art, the utility model has the following beneficial effects: it replaces the existing blasting hole-opening drill bit, inputs cooling water into the drill bit through the cooling water channel during use, reduces the working temperature of the drill bit, maintains the temperature of the drill bit when friction occurs between the drill bit and the stone wall of the pit, and quickly cleans the blockage of the cold water hole by arranging a nozzle on the drill bit and removing the nozzle, thereby avoiding overheating of the drill bit and aggravating wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is an axonometric drawing of the main structure of the utility model;

[0011] Figure 2 It is an axonometric cross-sectional view of the main structure of the utility model;

[0012] Figure 3 This is a front cross-sectional view of the main structure of the utility model;

[0013] Figure 4 It is a schematic diagram of the main structure of the utility model;

[0014] Figure 5 It is a top view schematic diagram of the main structure of the utility model.

[0015] In the figure: 1-drill bit main rod, 2-drill bit body, 3-fixed seat, 4-fixed plate, 5-cutter head, 6-cleaning groove, 7-fixed bevel, 8-cooling water groove, 9-nozzle, 10-auxiliary water channel, 11-limited bevel, 12-nozzle fixed seat, 13-reinforced bevel. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-5The utility model provides a drill bit structure for opening a mine blasting hole, comprising a drill bit main rod 1, a drill bit main body 2 is provided at the upper end of the drill bit main rod 1, a fixing seat 3 is provided at four directions of the upper end of the drill bit main body 2, a fixing plate 4 is provided inside the fixing seat 3, a cutter head 5 is provided at the outer end of the fixing plate 4, a cleaning groove 6 is provided on the side wall of the drill bit main body 2 and between two adjacent fixing seats 3, a fixed chamfer 7 is provided inside the cleaning groove 6 and on both sides of the fixing seat 3, a cooling water groove 8 is penetrated in the middle position between the drill bit main rod 1 and the drill bit main body 2 in the up and down directions, a nozzle 9 is provided at the upper end of the cooling water groove 8, and a secondary water channel 10 is connected between the middle position of the cleaning groove 6 and the cooling water groove 8.

[0018] When in use, a drill body 2 is arranged at the upper end of the drill main rod 1, and the drill body 2 is connected to the drilling equipment through the drill main rod 1. Four fixing seats 3 are arranged at the upper end of the drill body 2, and a cutter head 5 is inlaid on a fixing plate 4, and the fixing plate 4 is further arranged inside the fixing seat 3. The cutter head 5 is arranged inside the fixing seat 3 through the fixing plate 4, and the installation and replacement of the cutter head 5 are convenient while ensuring the connection strength. A cleaning groove 6 is provided between adjacent fixing seats 3 on the drill body 2, and debris and dust generated during drilling are output to the outside of the drill hole through the cleaning groove 6. Fixed bevels 7 are provided on both sides of the fixing seat 3. While ensuring the strength of the fixing seat 3, the contact area between the fixing seat 3 and the inner wall of the borehole is reduced, and the wear of the inner wall of the borehole on the fixing seat 3 is reduced. A cooling water groove 8 is set through the middle position inside the drill main rod 1 and the drill body 2. External cooling water is introduced into the interior of the drill body 2 through the cooling water groove 8, and sprayed to the upper end of the drill body 2 through the nozzle 9 to humidify the dust in the hole and reduce the temperature of the cutter head 5. A secondary water channel 10 is set inside the cleaning groove 6, and cooling water is sprayed to the side of the drill body 2 through the secondary water channel 10 to assist in humidifying the internal dust and reduce the temperature of the cutter head 5.

[0019] The upper outer surfaces of the four fixing seats 3 form a semi-spherical structure, and the upper outer surface of the fixing plate 4 is also a semi-spherical structure like the fixing seat 3. The outer surface of the fixing plate 4 is arranged corresponding to the outer end of the fixing seat 3, and a limiting bevel 11 is provided below the inner end of the fixing plate 4. The limiting bevel 11 abuts against the inside of the fixing seat 3. A plurality of cutter heads 5 are integrated together through the fixing plate 4. A limiting bevel 11 is provided on the inner side of the fixing plate 4 to ensure that the fixing plate 4 can be installed in the installation position of the fixing seat 3, which is convenient for the installation and replacement of the cutter head 5. The upper ends of the fixing seat 3 and the fixing plate 4 are designed as a semi-spherical structure to ensure the contact area between the cutter head 5 and the inner wall of the borehole and to ensure the progress of the drilling.

[0020] A nozzle fixing seat 12 is provided at the upper end of the drill body 2 and between the four fixing plates 4. The nozzle 9 is connected to the nozzle fixing seat 12 through a thread. The upper end of the nozzle 9 is set to the lower end between the four fixing plates 4. The nozzle fixing seat 12 is set at the upper end of the drill body 2 to ensure the firmness of the connection between the nozzle 9 and the drill body 2, and the upper end of the nozzle 9 is set to the inner side of the fixing plate 4 to avoid damage to the nozzle 9 during drilling.

[0021] The cutter head 5 is a cylindrical structure, one side of the cutter head 5 is embedded in the inner side of the fixing plate 4, and the outer end of the cutter head 5 extends to the outside of the drill body 2. Multiple cutter heads 5 are integrated into a fixing plate 4 to ensure the firmness of the connection of the cutter head 5 and facilitate the installation and replacement of the cutter head 5.

[0022] A reinforced bevel 13 is provided between the drill main rod 1 and the drill main body 2. The diameter of the drill main body 2 is smaller than the diameter of the drill main rod 1. The drill main rod 1 and the drill main body 2 are formed as one piece by cutting from a profile. The reinforced bevel 13 is provided during cutting to improve the connection strength between the drill main rod 1 and the drill main body 2.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill bit structure for drilling a mine blasting hole, characterized in that: The drill bit comprises a main rod (1), a main body (2) of the drill bit is provided at the upper end of the main rod (1), a fixing seat (3) is provided at four directions of the upper end of the main body (2), a fixing plate (4) is provided inside the fixing seat (3), a cutter head (5) is provided at the outer end of the fixing plate (4), a cleaning groove (6) is provided on the side wall of the main body (2) and between two adjacent fixing seats (3), a fixing chamfer (7) is provided inside the cleaning groove (6) and on both sides of the fixing seat (3), a cooling water groove (8) is provided in the middle position between the main rod (1) and the main body (2) in the vertical direction, a nozzle (9) is provided at the upper end of the cooling water groove (8), and a secondary water channel (10) is connected between the middle position of the cleaning groove (6) and the cooling water groove (8).

2. A mine blasting hole drilling drill bit structure according to claim 1, characterized in that: The upper outer surfaces of the four fixing seats (3) form a semi-spherical structure, and the upper outer surface of the fixing plate (4) is also a semi-spherical structure like the fixing seat (3). The outer surface of the fixing plate (4) is arranged corresponding to the outer end of the fixing seat (3), and a limiting bevel (11) is provided below the inner end of the fixing plate (4), and the limiting bevel (11) abuts against the inside of the fixing seat (3).

3. A mine blasting hole drilling drill bit structure according to claim 1, characterized in that: A nozzle fixing seat (12) is provided at the upper end of the drill body (2) and between the four fixing plates (4); the nozzle (9) is connected to the nozzle fixing seat (12) via a thread; and the upper end of the nozzle (9) is arranged at the lower end between the four fixing plates (4).

4. A mine blasting hole drilling drill bit structure according to claim 1, characterized in that: The cutter head (5) is a cylindrical structure, one side of the cutter head (5) is embedded in the inner side of the fixing plate (4), and the outer end of the cutter head (5) extends outward from the drill head body (2).

5. A mine blasting hole drilling drill bit structure according to claim 1, characterized in that: A reinforced chamfer (13) is provided between the drill bit main rod (1) and the drill bit body (2).

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