CN204920795U - Combined broaching bit for mine - Google Patents

Combined broaching bit for mine Download PDF

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Publication number
CN204920795U
CN204920795U CN201520471245.2U CN201520471245U CN204920795U CN 204920795 U CN204920795 U CN 204920795U CN 201520471245 U CN201520471245 U CN 201520471245U CN 204920795 U CN204920795 U CN 204920795U
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CN
China
Prior art keywords
bit
combined
hole
combined drill
main shaft
Prior art date
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Active
Application number
CN201520471245.2U
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Chinese (zh)
Inventor
王保勤
张松林
袁吉瑞
程现荣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zoucheng Yankuang Taide Industry and Trade Co Ltd
Original Assignee
Zoucheng Yankuang Taide Industry and Trade Co Ltd
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Priority to CN201520471245.2U priority Critical patent/CN204920795U/en
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Publication of CN204920795U publication Critical patent/CN204920795U/en
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Abstract

The utility model provides a combined broaching bit for mine, including the bit body, the front end of bit body is equipped with the tool bit, the middle part of bit body is equipped with the limbers, the preceding terminal surface uniform annular of bit body has wash port a, the rear end of bit body is equipped with toper internal thread hole, the front end of combined drill main shaft is the toper, installs threaded hole in the toper of bit body through the screw thread, install the wing at the bottom of combined drill wing centre section and the combined drill on the combined drill main shaft in proper order, the wing passes through the key -type connection with the combined drill main shaft at the bottom of combined drill wing centre section and the combined drill, the combined drill main shaft is inside to be equipped with the through -hole, and the back end of through -hole is the toper shoulder hole, the toper shoulder hole is the internal thread hole. This combination ream bit is used for the colliery to drill in the pit, and the pore -forming is once crept into to problem that drill bit that it needs different diameters to solve original heavy -calibre drilling crept into respectively, can improve work efficiency greatly, reduces intensity of labour.

Description

Combined broaching bit for mine
Technical field
The utility model relates to engineering drilling, mine locating drilling tool accessory field, coal seam, is specifically related to a kind of combined broaching bit for mine.
Background technology
At present, in coal production, big diameter borehole needs the drill bit of different-diameter to creep into respectively, and this just needs to repeat to creep into and needs often more bit change, inefficiency.
Summary of the invention
For above-mentioned deficiency, the utility model provides a kind of combined broaching bit for mine.
The utility model is achieved through the following technical solutions: a kind of combined broaching bit for mine, comprises bit body, and the front end of described bit body is provided with cutter head; The middle part of bit body is provided with limbers; The front end face annular of described bit body is evenly equipped with drain hole a; The rear end of bit body is provided with conical internal thread hole; The front end of combined drill main shaft is taper, and its periphery is evenly equipped with external screw thread, is arranged in the conical internal thread hole of bit body by screw thread; Described combined drill main shaft is provided with the wing at the bottom of combined drill wing centre section and combined drill successively; The wing at the bottom of described combined drill wing centre section and combined drill is provided with bit; Described combined drill wing centre section is connected by key with combined drill main shaft with the wing at the bottom of combined drill; Described combined drill main shaft inside is provided with through hole, and the back segment of through hole is conic steps hole; Described conic steps hole is internal thread hole; Described combined drill wing centre section is evenly equipped with drain hole b, and drain hole b is for being obliquely installed, and drain hole b is connected with the through hole of combined drill main shaft inside.
As preferably, described cutter head is carbide alloy.
Further, the end face of described cutter head is inclination cambered surface.
Further, the end face of bit is clinoplain.
Further, the quantity of described drain hole a and drain hole b is 3.
The usefulness of this utility model is, the utility model provides a kind of combined broaching bit for mine, this combination reaming bit is used for coal mine down-hole drilling, solve the problem that original big diameter borehole needs the drill bit of different-diameter to creep into respectively, a drilling and forming hole, greatly can increase work efficiency, reduce labour intensity.
Accompanying drawing explanation
Fig. 1 is the structural representation of combined broaching bit for mine;
Fig. 2 is the partial cutaway view schematic of combined broaching bit for mine;
Fig. 3 is the left view of combined broaching bit for mine.
In figure, 1 bit body, 2 bit, 3 cutter heads, 4 limberss, 5 drain hole a, 6 combined drill main shafts, 7 combined drill wing centre sections, the wing at the bottom of 8 combined drills, 9 keys, 10 through holes, 11 conic steps holes, 12 drain hole b.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the utility model is described further.
As shown in Figure 1, the utility model provides a kind of combined broaching bit for mine, comprises bit body 1, it is characterized in that: the front end of described bit body 1 is provided with cutter head 3; The middle part of bit body 1 is provided with limbers 4; The front end face annular of described bit body 1 is evenly equipped with drain hole a5; The rear end of bit body 1 is provided with conical internal thread hole; The front end of combined drill main shaft 6 is taper, and its periphery is evenly equipped with external screw thread, is arranged in the conical internal thread hole of bit body 1 by screw thread; Described combined drill main shaft 6 is provided with successively the wing 8 at the bottom of combined drill wing centre section 7 and combined drill; Described combined drill main shaft 6 inside is provided with through hole 10, and the back segment of through hole 10 is conic steps hole 11; Described conic steps hole 11 is internal thread hole; The wing 8 at the bottom of described combined drill wing centre section 7 and combined drill is provided with bit 2; Described combined drill wing centre section 7 is connected by key 9 with combined drill main shaft 6 with the wing at the bottom of combined drill 8; Described combined drill wing centre section 7 is evenly equipped with drain hole b12, and drain hole b12 is for being obliquely installed, and drain hole b12 is connected with the through hole 10 of combined drill main shaft 6 inside.
In the present embodiment, cutter head 3 and bit 2 are carbide alloy, and the end face of cutter head 3 is inclination cambered surface, and the end face of bit 2 is clinoplain, and the quantity of drain hole a5 and drain hole b12 is respectively 3, during use, can adjust according to working environment.
Combined broaching bit for mine of the present utility model, for coal mine down-hole drilling, solve the problem that original big diameter borehole needs the drill bit of different-diameter to creep into respectively, a drilling and forming hole, can greatly increase work efficiency, reduce labour intensity, and decrease bit consumption, difficult drop-off in the course of work, its structure is simple, strong adaptability, easily operates, and has practicality widely.

Claims (5)

1. a combined broaching bit for mine, comprises bit body (1), it is characterized in that: the front end of described bit body (1) is provided with cutter head (3); The middle part of bit body (1) is provided with limbers (4); The front end face annular of described bit body (1) is evenly equipped with drain hole a(5); The rear end of bit body (1) is provided with conical internal thread hole;
The front end of combined drill main shaft (6) is taper, and its periphery is evenly equipped with external screw thread, is arranged in the conical internal thread hole of bit body (1) by screw thread; Described combined drill main shaft (6) is provided with successively the wing (8) at the bottom of combined drill wing centre section (7) and combined drill; Described combined drill main shaft (6) inside is provided with through hole (10), and the back segment of through hole (10) is conic steps hole (11); Described conic steps hole (11) is internal thread hole;
The wing (8) at the bottom of described combined drill wing centre section (7) and combined drill is provided with bit (2); Described combined drill wing centre section (7) is connected by key (9) with combined drill main shaft (6) with the wing at the bottom of combined drill (8);
Described combined drill wing centre section (7) is evenly equipped with drain hole b(12), drain hole b(12) for being obliquely installed, drain hole b(12) be connected with the through hole (10) of combined drill main shaft (6) inside.
2. a kind of combined broaching bit for mine according to claim 1, is characterized in that: described cutter head (3) is carbide alloy.
3. a kind of combined broaching bit for mine according to claim 2, is characterized in that: the end face of described cutter head (3) is inclination cambered surface.
4. a kind of combined broaching bit for mine according to claim 1, is characterized in that: the end face of described bit (2) is clinoplain.
5. a kind of combined broaching bit for mine according to claim 1, is characterized in that: described drain hole a(5) and drain hole b(12) quantity be respectively 3.
CN201520471245.2U 2015-07-03 2015-07-03 Combined broaching bit for mine Active CN204920795U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520471245.2U CN204920795U (en) 2015-07-03 2015-07-03 Combined broaching bit for mine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520471245.2U CN204920795U (en) 2015-07-03 2015-07-03 Combined broaching bit for mine

Publications (1)

Publication Number Publication Date
CN204920795U true CN204920795U (en) 2015-12-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520471245.2U Active CN204920795U (en) 2015-07-03 2015-07-03 Combined broaching bit for mine

Country Status (1)

Country Link
CN (1) CN204920795U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108915596A (en) * 2018-07-05 2018-11-30 邹城兖矿泰德工贸有限公司 Combined broaching bit for mine
CN110548903A (en) * 2019-07-15 2019-12-10 镇江尧研工具有限公司 Combined multi-stage drill bit device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108915596A (en) * 2018-07-05 2018-11-30 邹城兖矿泰德工贸有限公司 Combined broaching bit for mine
CN110548903A (en) * 2019-07-15 2019-12-10 镇江尧研工具有限公司 Combined multi-stage drill bit device

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