Structure of guide type chambering button drill bit

Abstract

The utility model relates to the technical field of drill bits, and discloses a guide type chambering button drill bit structure which comprises a drill bit body, a connecting mechanism is arranged at one end of the drill bit body, a discharging mechanism is arranged outside the drill bit body, the connecting mechanism comprises a connecting column, a threaded groove is formed in the top of the connecting column, and the discharging mechanism is arranged in the threaded groove. A threaded column is in threaded connection with the interior of the threaded groove, a connecting sleeve is fixedly connected to the exterior of the connecting column, a fixing sleeve is in threaded connection with the inner side of the connecting sleeve, a fixing assembly is arranged outside the fixing sleeve and comprises a fixing groove, a plurality of fixing columns are in threaded connection with the interior of the fixing groove, and the fixing column is fixedly connected with the fixing groove. The multiple fixing grooves are distributed in an annular array mode and are formed in the outer portions of the connecting sleeve and the fixing sleeve correspondingly, and according to the structure of the guiding type reaming button drill bit, the drill bit and the connecting column can be conveniently connected and detached through the connecting mechanism, so that the drill bit is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a structure of a guide hole-expanding ball-tooth drill bit. Background Art

[0002] Hole-enlarging ball-tooth drill bits are mainly used in engineering mining, road traffic, hydropower facility construction, etc. In order to achieve a better blasting effect, it is necessary to increase the size of the rock drilling hole in the middle of a rock drilling surface, so a hole-enlarging ball-tooth drill bit is needed. The structure can be divided into guided type, split type, mushroom type, etc. The guided ball-tooth drill bit is one of the main structures. It is the most widely used in use because the linear deviation of the hole enlargement is small during the rock drilling process. The guided hole-expanding ball-tooth drill bit is composed of a steel body and carbide teeth. Due to the high hardness of the alloy teeth, they are in direct contact with the rock during the rock crushing process and play an important role. The steel body structure must also meet the rock drilling needs. The slag removal effect must be considered in the structural design of the head guide, the layout of the alloy teeth, the powder discharge groove and the water hole. Unsmooth slag removal causes the drill bit to repeatedly impact the slag, the shell is severely worn, and the penetration is relatively slow, resulting in the early failure and scrapping of the drill bit, which greatly reduces the service life of the drill bit. The conditions of the use environment are very harsh and the stress conditions are very complex. It has the shortest life of all drill products. Therefore, the requirements for its various performances and quality are very strict. The service life of each drill bit is only 80-150 meters.

[0003] According to the structure of a guided hole-reaming ball-tooth drill bit disclosed in Chinese patent publication number CN 217400830 U, the device includes a head guide head, one end of the head guide head is integrally connected to an expansion guide head, four groups of end face drainage grooves are symmetrically opened inside the involute end face of the expansion guide head, the bottom of the end face drainage grooves is connected to a 90-degree powder drainage groove, and eight groups of 90-degree powder drainage grooves are symmetrically opened in the surrounding surface of the expansion guide head, a second reverse water hole is opened inside the head guide head, and the second reverse water hole is connected to a group of first reverse water holes and a center hole. The utility model enables the alloy teeth to be evenly cooled and the service life of the alloy teeth is improved by opening a drainage groove on the end face of the expansion guide head; the large powder drainage groove opened on the surrounding surface of the expansion guide head adopts an angle of 90 degrees and an R5 arc transition, which can increase the depth of the powder drainage groove and increase the strength of the powder drainage groove, and a reverse water hole is added at the tail to improve the slag removal effect and the difficulty of drill withdrawal.

[0004] However, when the device is in use, the drill bit and the connecting column are arranged integrally, which is inconvenient when the drill bit needs to be disassembled and replaced, so that the device has certain limitations. Utility Model Content

[0005] The purpose of the utility model is to provide a structure of a guided hole-expanding ball-tooth drill bit to solve the problem proposed in the above-mentioned background technology that when the device is in use, the drill bit and the connecting column are arranged integrally, which is inconvenient when the drill bit needs to be disassembled and replaced, making the device have certain limitations.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a structure of a guided hole-reaming ball-tooth drill bit, comprising a drill bit body, one end of the drill bit body is provided with a connecting mechanism, and the outside of the drill bit body is provided with a discharge mechanism;

[0007] The connecting mechanism includes a connecting column, a threaded groove is formed on the top of the connecting column, a threaded column is connected to the inner thread of the threaded groove, a connecting sleeve is fixedly connected to the outside of the connecting column, a fixing sleeve is threadedly connected to the inner side of the connecting sleeve, and a fixing component is arranged on the outside of the fixing sleeve.

[0008] Preferably, the fixing assembly comprises a fixing groove, and the internal thread of the fixing groove is connected with a fixing column.

[0009] Preferably, a plurality of the fixing grooves are provided, and the plurality of the fixing grooves are arranged to be distributed in a ring array, and the plurality of the fixing grooves are respectively provided on the outside of the connecting sleeve and the fixing sleeve.

[0010] Preferably, the fixing sleeve is configured to be conical, the fixing sleeve is fixedly connected to the outside of the drill bit body, and the threaded column is fixedly connected to the bottom of the drill bit body.

[0011] Preferably, the discharge mechanism comprises a drainage groove, one end of which is provided with a powder discharge groove, and one end of which is provided with a reverse water hole.

[0012] Preferably, a plurality of the drainage grooves are provided, and the plurality of drainage grooves are all provided outside the drill bit body.

[0013] Preferably, the powder discharge groove and the reverse water hole are provided in plurality, and the plurality of powder discharge grooves and the reverse water holes are provided on the outside of the drill bit body.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] First, the utility model is to integrally connect and install the threaded column and the fixing sleeve at the bottom and the outside of the drill bit body respectively. When it is necessary to connect with the connecting column, it is only necessary to align the threaded column at the bottom of the drill bit body with the threaded groove at the top of the connecting column, so that the position can be aligned, and then rotate it downward, so that the threaded column rotates into the threaded groove at the top of the connecting column. When the connecting column descends, the external fixing sleeve also rotates into the connecting sleeve outside the connecting column, so that the drill bit body and the connecting column are connected and fixed inside and outside, and then the positions of the multiple fixing grooves opened on the connecting sleeve and the outside of the fixing sleeve correspond to each other, so that the multiple fixing columns can be rotated into the fixing grooves in turn, thereby further fixing the fixing sleeve and the connecting sleeve, avoiding the connection between the two to make them loose up and down, and further improving the stability of the connection. It can be connected to the external equipment through the connecting column. When it needs to be disassembled, it is only necessary to disassemble the fixing columns in turn to replace the drill bit body, thereby completing the connection and fixing operation, and achieving the effect of facilitating the replacement of the drill bit.

[0016] Secondly, the utility model uses the drainage groove on the outside of the drill bit body to allow the water to cool the teeth on the outside of the drill bit body, thereby improving the service life of the drill bit body. The setting of the powder discharge groove can facilitate slag discharge, and the setting of the reverse water hole avoids slag blocking the tail of the drill bit, thereby achieving the effect of improving the service life of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an overall stereogram of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of the fixing components of the utility model;

[0019] Figure 3 This is a cross-sectional view of the utility model;

[0020] Figure 4 It is an enlarged view of point A of the present utility model.

[0021] Among them: 1. drill bit body; 2. connecting mechanism; 3. discharge mechanism; 21. connecting column; 22. threaded column; 23. connecting sleeve; 24. fixing sleeve; 25. fixing assembly; 26. fixing groove; 27. fixing column; 31. drainage groove; 32. powder discharge groove; 33. reverse water hole. DETAILED DESCRIPTION

[0022] 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.

[0023] The utility model provides the following technical solutions:

[0024] Embodiment 1

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 A structure of a guided hole-reaming ball-tooth drill bit, comprising a drill bit body 1, a connecting mechanism 2 is provided at one end of the drill bit body 1, and a discharge mechanism 3 is provided outside the drill bit body 1;

[0026] The connecting mechanism 2 includes a connecting column 21, a threaded groove is provided on the top of the connecting column 21, a threaded column 22 is connected to the inner thread of the threaded groove, a connecting sleeve 23 is fixedly connected to the outside of the connecting column 21, a fixing sleeve 24 is threadedly connected to the inner side of the connecting sleeve 23, and a fixing component 25 is arranged on the outside of the fixing sleeve 24.

[0027] The fixing assembly 25 includes a fixing groove 26 , and a fixing column 27 is threadedly connected to the interior of the fixing groove 26 .

[0028] A plurality of fixing grooves 26 are provided, and the plurality of fixing grooves 26 are arranged to be distributed in a ring array. The plurality of fixing grooves 26 are respectively provided outside the connecting sleeve 23 and the fixing sleeve 24 .

[0029] The fixing sleeve 24 is configured to be conical, and the fixing sleeve 24 is fixedly connected to the outside of the drill bit body 1 , and the threaded column 22 is fixedly connected to the bottom of the drill bit body 1 .

[0030] Through the above technical solution, the threaded column 22 and the fixing sleeve 24 are respectively connected and installed integrally at the bottom and the outside of the drill bit body 1. When it is necessary to connect with the connecting column 21, it is only necessary to align the threaded column 22 at the bottom of the drill bit body 1 with the thread groove at the top of the connecting column 21, and then rotate it downward so that the threaded column 22 rotates into the thread groove at the top of the connecting column 21. When the connecting column 21 descends, the external fixing sleeve 24 also rotates into the connecting sleeve 23 outside the connecting column 21, so that the drill bit body 1 and the connecting column 21 are connected inside and outside. The fixing sleeve 23 and the fixing sleeve 24 are fixed on the fixing sleeve 24, and then the positions of the fixing grooves 26 opened on the outside of the connecting sleeve 23 and the fixing sleeve 24 correspond to each other, so that the fixing posts 27 can be rotated into the fixing grooves 26 in sequence, thereby further fixing the fixing sleeve 24 and the connecting sleeve 23 to prevent the connection between the two from loosening up and down, and further improve the stability of the connection. The connection with the external equipment can be done through the connecting post 21. When disassembly is required, it is only necessary to disassemble the fixing posts 27 in sequence to replace the drill bit body 1, thereby completing the connection and fixing operation, and achieving the effect of facilitating the replacement of the drill bit.

[0031] Embodiment 2

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 On the basis of the first embodiment, it is further obtained that the discharge mechanism 3 includes a drainage groove 31, a powder discharge groove 32 is provided at one end of the drainage groove 31, and a reverse water hole 33 is provided at one end of the drainage groove 31.

[0033] A plurality of drainage grooves 31 are provided, and the plurality of drainage grooves 31 are all provided outside the drill bit body 1 .

[0034] A plurality of powder discharge grooves 32 and a plurality of reverse water holes 33 are provided, and the plurality of powder discharge grooves 32 and the plurality of reverse water holes 33 are provided outside the drill bit body 1 .

[0035] Through the above technical solution, the water discharged through the drainage groove 31 opened on the outside of the drill bit body 1 can cool the teeth outside the drill bit body 1, thereby improving the service life of the drill bit body 1. The setting of the powder discharge groove 32 can facilitate slag discharge, and the setting of the reverse water hole 33 avoids slag blocking the tail of the drill bit, thereby achieving the effect of improving the service life of the drill bit.

[0036] Although the 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 thereof, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A structure of a guided hole-expanding ball-tooth drill bit, comprising a drill bit body (1), characterized in that: A connection mechanism (2) is provided at one end of the drill bit body (1), and a discharge mechanism (3) is provided outside the drill bit body (1); The connection mechanism (2) comprises a connection column (21), a thread groove is formed on the top of the connection column (21), a thread column (22) is connected to the inner thread of the thread groove, a connection sleeve (23) is fixedly connected to the outside of the connection column (21), a fixing sleeve (24) is connected to the inner thread of the connection sleeve (23), and a fixing assembly (25) is arranged on the outside of the fixing sleeve (24).

2. The structure of a guided hole-reaming ball-tooth drill bit according to claim 1, characterized in that: The fixing assembly (25) comprises a fixing groove (26), and a fixing column (27) is internally threadedly connected to the fixing groove (26).

3. The structure of a guided hole-reaming ball-tooth drill bit according to claim 2, characterized in that: A plurality of the fixing grooves (26) are provided, and the plurality of the fixing grooves (26) are arranged to be distributed in a ring array. The plurality of the fixing grooves (26) are respectively provided outside the connecting sleeve (23) and the fixing sleeve (24).

4. The structure of a guided hole-reaming ball-tooth drill bit according to claim 1, characterized in that: The fixing sleeve (24) is configured to be conical, the fixing sleeve (24) is fixedly connected to the outside of the drill bit body (1), and the threaded column (22) is fixedly connected to the bottom of the drill bit body (1).

5. The structure of a guided hole-reaming ball-tooth drill bit according to claim 1, characterized in that: The discharge mechanism (3) comprises a drainage groove (31), one end of which is provided with a powder discharge groove (32), and one end of which is provided with a reverse water hole (33).

6. The structure of a guided hole-reaming ball-tooth drill bit according to claim 5, characterized in that: A plurality of the drainage grooves (31) are provided, and the plurality of drainage grooves (31) are all provided outside the drill bit body (1).

7. The structure of a guided hole-reaming ball-tooth drill bit according to claim 5, characterized in that: A plurality of the powder discharge grooves (32) and the reverse water holes (33) are provided, and the plurality of the powder discharge grooves (32) and the reverse water holes (33) are provided outside the drill bit body (1).

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