CN204002536U - Three-member type drilling tool - Google Patents
Three-member type drilling tool Download PDFInfo
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- CN204002536U CN204002536U CN201420362140.9U CN201420362140U CN204002536U CN 204002536 U CN204002536 U CN 204002536U CN 201420362140 U CN201420362140 U CN 201420362140U CN 204002536 U CN204002536 U CN 204002536U
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- drill bit
- drilling rod
- bit
- shank sleeve
- drill
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Abstract
A three-member type drilling tool, comprises drill bit, drilling rod and bit shank sleeve, and drill bit adopts and is threaded with drilling rod, and after drill bit is connected with drilling rod, the sealing surface of drill bit endoporus contacts with the end part seal face of drilling rod and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.Drilling rod adopts and is threaded with bit shank sleeve, and after drill bit is connected with drilling rod, the spherical seal surface of drill bit termination contacts with the conical seal (contact) face of bit shank sleeve endoporus and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.
Description
Technical field
The utility model relates to a kind of drilling tool, particularly a kind of three-member type drilling tool of carving rock perforate and metallurgy high furnace tapping outlet for mine.
Background technology
At present, rock perforate is carved in mine and metallurgy high furnace tapping outlet generally adopts and carves the joining three-member type drilling tool of rock machine bit shank bar, comprises drill bit, drilling rod, bit shank sleeve, and the trapezoidal or waveform bolt of drill bit, drilling rod and bit shank sleeve links together.Drilling tool is in boring procedure, and drill bit must be rotated or impact rotation, and cooling by pressing sky or press water to carry out drill bit position, to drill bit provide protection and by bore from rock dust or sludge (stemming) from drill bit outside, discharge.Yet, the drill bit of drilling tool is when drilling through rock or sludge (stemming), because drill bit design is porous water-spraying, drill bit outer cylinder is that monocline face trace shrinks, the dust guiding groove design of drill bit is unreasonable, exists the water yield to disperse, and rock dust or sludge (stemming) are discharged difficulty from drill bit outside, impact resistance is large, and drill bit very easily weares and teares.In addition, when blast furnace is applied, often open iron mouth one time, need sometimes open an iron mouth and need 2～3 drill bits with approximately 4～5 minutes time, seriously restrict cost of production, operating efficiency is low and affects the surely suitable of blast furnace production.Further will cause carving rock machine and decline application life, maintenance of equipment cost rises.
Summary of the invention
The purpose of this utility model is overcome the above-mentioned deficiency of prior art and a kind of three-member type drilling tool is provided, and it is to rock perforate and blast furnace open hole efficiency is high, abrasion resistance good, long service life.
The technical solution of the utility model is: a kind of three-member type drilling tool, it comprises drill bit, drilling rod and bit shank sleeve, drill bit adopts and is threaded with drilling rod, after drill bit is connected with drilling rod, the sealing surface of drill bit endoporus contacts with the end part seal face of drilling rod and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.Drilling rod adopts and is threaded with bit shank sleeve, and after drill bit is connected with drilling rod, the spherical seal surface of drill bit termination contacts with the conical seal (contact) face of bit shank sleeve endoporus and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.
Described drill body is divided into three sections, is respectively small end, middle-end and holds greatly, and the joint portion of the joint portion of small end and middle-end and middle-end and large end adopts respectively arc transition, to guarantee exiting fast of drill bit.End at the large end of drill bit embeds welding alloy blade, alloy blade is evenly distributed on the end of the large end of drill bit, the main sword of alloy blade end exceeds the end of the large end of drill bit drill bit, the side edge of alloy blade exceeds the external cylindrical surface of the large end of drill bit, to guarantee that master, the side edge of alloy blade bring into play good cutting effect.Drill body is provided with dust guiding groove, dust guiding groove is extended down to the external cylindrical surface of small end from the end of the large end of drill bit, and communicate with the endoporus of drill bit, in the end of dust guiding groove one side, be provided with the auxiliary cutting edge of secondary cutting, the auxiliary edge direction of cutting edge and the main sword edge direction of alloy blade are consistent, thereby make the end of the large end of drill bit form secondary assisted machining.The endoporus of drill bit is provided with sealing surface, and the endoporus of drill bit small end is provided with internal thread.
Described drilling rod is provided with centre bore, the two ends of drilling rod are respectively equipped with the external screw thread being connected with drill bit and the external screw thread being connected with bit shank sleeve, the externally threaded length being connected with drill bit is less than the external thread length being connected with bit shank sleeve, the end that drilling rod is connected with drill bit is provided with sealing surface, and the end that drilling rod is connected with bit shank sleeve is provided with spherical seal surface.On the cylinder of two ends of drill, be respectively equipped with symmetrical bayonet slot, so that the dismounting of drill bit.
Described bit shank sleeve is provided with centre bore, and the two ends of centre bore are respectively equipped with internal thread, in the bottom of the internal thread being connected with drilling rod, is provided with conical seal (contact) face.On the cylinder of bit shank sleeve, be provided with symmetrical bayonet slot, so that the dismounting of bit shank sleeve.
The utility model compared with prior art has following features:
Large, medium and small three sections of being divided into of the drill body of the three-member type drilling tool that 1, the utility model provides, its joint portion adopts respectively arc transition, to guarantee that drill bit exits fast.
2, the body of drill bit is provided with dust guiding groove, and dust guiding groove is extended down to the external cylindrical surface of small end from the end of the large end of drill bit, and communicates with the endoporus of drill bit, so that during drilling rock stratum or tapping outlet, rock dust or sludge are discharged fast in guiding gutter.
3, in the end of dust guiding groove one side, be provided with the auxiliary cutting edge of secondary cutting, the auxiliary edge direction of cutting edge and the main sword edge direction of alloy blade are consistent, thereby make the end of the large end of drill bit form secondary assisted machining.
4, the bonding surface that the bonding surface that drill bit is connected with drilling rod and drilling rod are connected with bit shank sleeve is provided with hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness, guarantees the cooling effect of drill bit and discharges rock dust or the required enough pressure of sludge (stemming) dirt.
Below in conjunction with figure and embodiment, detailed structure of the present utility model is further described.
Below in conjunction with the drawings and specific embodiments, detailed structure of the present utility model is further described.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model;
The structural representation that accompanying drawing 2 is drill bit;
Accompanying drawing 3 is the A-A sectional view in accompanying drawing 2;
Accompanying drawing 4 is the top view in accompanying drawing 2;
The structural representation that accompanying drawing 5 is drilling rod;
The structural representation that accompanying drawing 6 is bit shank sleeve.
The specific embodiment
A kind of three-member type drilling tool, it comprises drill bit 1, drilling rod 2 and bit shank sleeve 3, and drill bit 1 adopts and is threaded with drilling rod 2, after drill bit 1 is connected with drilling rod 2, the sealing surface 1-8 of drill bit 1 endoporus contacts with the end part seal face 2-7 of drilling rod 2 and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.Drilling rod 2 adopts and is threaded with bit shank sleeve 3, and after drill bit 1 is connected with drilling rod 2, the spherical seal surface 2-6 of drill bit 1 termination contacts with the conical seal (contact) face 3-2 of bit shank sleeve 3 endoporus and forms hermetically-sealed construction, to ensure cooling water or to press empty sealing effectiveness.
Described drill bit 1 body is divided into three sections, is respectively small end 1-1, middle-end 1-2 and holds greatly 1-3, and the joint portion of small end 1-1 and middle-end 1-2 and middle-end 1-2 adopt respectively arc transition with the joint portion of large end 1-3, to guarantee exiting fast of drill bit 1.End at the large end 1-3 of drill bit 1 embeds welding alloy blade 1-4, alloy blade 1-4 is evenly distributed on the end of the large end 1-3 of drill bit 1, the main sword of alloy blade 1-4 end exceeds the end of the large end 1-3 of drill bit drill bit 1, the side edge of alloy blade 1-4 exceeds the external cylindrical surface of the large end of drill bit 1 1-3, to guarantee that master, the side edge of alloy blade 1-4 bring into play good cutting effect.Drill bit 1 body is provided with dust guiding groove 1-5, dust guiding groove 1-5 is extended down to the external cylindrical surface of small end 1-1 from the end of the large end 1-3 of drill bit 1, and communicate with the endoporus of drill bit 1, in the end of dust guiding groove 1-5 mono-side, be provided with the auxiliary cutting edge 1-9 of secondary cutting, the auxiliary edge direction of cutting edge 1-9 and the main sword edge direction of alloy blade 1-4 are consistent, thereby make the end of the large end 1-3 of drill bit 1 form secondary assisted machining.The endoporus of drill bit 1 is provided with sealing surface 1-8, and the endoporus of drill bit 1 small end 1-1 is provided with internal thread 1-7.
Described drilling rod 2 is provided with centre bore 2-1, the two ends of drilling rod 2 are respectively equipped with the external screw thread 2-2 being connected with drill bit 1 and the external screw thread 2-5 being connected with bit shank sleeve 3, the length of the external screw thread 2-2 being connected with drill bit 1 is less than the external screw thread 2-5 length being connected with bit shank sleeve 3, the end that drilling rod 2 is connected with drill bit 1 is provided with sealing surface 2-7, and the end that drilling rod 2 is connected with bit shank sleeve 3 is provided with spherical seal surface 2-6.On the cylinder at drilling rod 2 two ends, be respectively equipped with symmetrical bayonet slot 2-3 and 2-4, so that the dismounting of drill bit.
Described bit shank sleeve 3 is provided with centre bore 3-3, and the two ends of centre bore 3-3 are respectively equipped with internal thread 3-1 and internal thread 3-5, in the bottom of the internal thread 3-1 being connected with drilling rod 2, is provided with conical seal (contact) face 3-2.On the cylinder of bit shank sleeve 3, be provided with symmetrical bayonet slot 3-4, so that the dismounting of bit shank sleeve 3.
Claims (3)
1. a three-member type drilling tool, it is characterized in that: comprise drill bit, drilling rod and bit shank sleeve, drill bit adopts and is threaded with drilling rod, after drill bit is connected with drilling rod, the sealing surface of drill bit endoporus contacts with the end part seal face of drilling rod and forms hermetically-sealed construction, drilling rod adopts and is threaded with bit shank sleeve, and after drill bit is connected with drilling rod, the spherical seal surface of drill bit termination contacts with the conical seal (contact) face of bit shank sleeve endoporus and forms hermetically-sealed construction;
Described drill body is divided into three sections, is respectively small end, middle-end and holds greatly, and the joint portion of the joint portion of small end and middle-end and middle-end and large end adopts respectively arc transition; End at the large end of drill bit embeds welding alloy blade, and alloy blade is evenly distributed on the end of the large end of drill bit, and the main sword of alloy blade end exceeds the end of the large end of drill bit drill bit, and the side edge of alloy blade exceeds the external cylindrical surface of the large end of drill bit; Drill body is provided with dust guiding groove, and dust guiding groove is extended down to the external cylindrical surface of small end from the end of the large end of drill bit, and communicates with the endoporus of drill bit; The endoporus of drill bit is provided with sealing surface, and the endoporus of drill bit small end is provided with internal thread;
Described drilling rod is provided with centre bore, the two ends of drilling rod are respectively equipped with the external screw thread being connected with drill bit and the external screw thread being connected with bit shank sleeve, the externally threaded length being connected with drill bit is less than the external thread length being connected with bit shank sleeve, the end that drilling rod is connected with drill bit is provided with sealing surface, and the end that drilling rod is connected with bit shank sleeve is provided with spherical seal surface;
Described bit shank sleeve is provided with centre bore, and the two ends of centre bore are respectively equipped with internal thread, in the bottom of the internal thread being connected with drilling rod, is provided with conical seal (contact) face.
2. three-member type drilling tool according to claim 1, is characterized in that: in the end of dust guiding groove one side, be provided with the auxiliary cutting edge of secondary cutting, the auxiliary edge direction of cutting edge and the main sword edge direction of alloy blade are consistent.
3. three-member type drilling tool according to claim 1 and 2, is characterized in that: on the cylinder of two ends of drill, be respectively equipped with symmetrical bayonet slot, be provided with symmetrical bayonet slot on the cylinder of bit shank sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362140.9U CN204002536U (en) | 2014-07-02 | 2014-07-02 | Three-member type drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420362140.9U CN204002536U (en) | 2014-07-02 | 2014-07-02 | Three-member type drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204002536U true CN204002536U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420362140.9U Active CN204002536U (en) | 2014-07-02 | 2014-07-02 | Three-member type drilling tool |
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|---|---|
| CN (1) | CN204002536U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049802A (en) * | 2018-01-15 | 2018-05-18 | 山东天瑞重工有限公司 | A kind of new hydraulic drill torque output structure |
-
2014
- 2014-07-02 CN CN201420362140.9U patent/CN204002536U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108049802A (en) * | 2018-01-15 | 2018-05-18 | 山东天瑞重工有限公司 | A kind of new hydraulic drill torque output structure |
| CN108049802B (en) * | 2018-01-15 | 2024-05-28 | 山东天瑞重工有限公司 | Novel torque output structure for hydraulic rock drill |
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