CN2210949Y - Cold-compressed spheircal-teeth jump-bit for drill wagon - Google Patents
Cold-compressed spheircal-teeth jump-bit for drill wagon Download PDFInfo
- Publication number
- CN2210949Y CN2210949Y CN 94245778 CN94245778U CN2210949Y CN 2210949 Y CN2210949 Y CN 2210949Y CN 94245778 CN94245778 CN 94245778 CN 94245778 U CN94245778 U CN 94245778U CN 2210949 Y CN2210949 Y CN 2210949Y
- Authority
- CN
- China
- Prior art keywords
- head
- bit
- perforations
- cold
- cambered surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a cold-compressed spherical-teeth jump-bit for a drill wagon, which comprises a head part and a skirt part. The jump-bit is provided with a spiracle, a slag runner, toothed holes and hard alloy pillar teeth imbedded in the toothed holes. The utility model is characterized in that two toothed holes and one spiracle are arranged in the top circle of the head part. Two cambered slag runners are processed on a conical annular surface of the head part and divide the conical annular surface into two sections of conical cambered surfaces with unequal length. Two toothed holes are arranged on the long cambered surface, and two toothed holes are arranged on the short conical cambered surface. The utility model has the advantages that rotational resistance is reduced, drilling speed is raised, the service life of the jump-bit is extended, and the fabrication process is simplified.
Description
The utility model relates to a kind of drill carriage cold-pressing balls tooth drill bit, and it is suitable for using on all kinds of hammer drill, and it comprises head and skirt section two parts, and bore bit is provided with hole for water spraying, ash pit and perforation, and be installed in the interior hard alloy columnar teeth of perforation.
The drill carriage of prior art with the structure of spherical tooth drill bit as shown in Figure 1, its ash pit is a wedge structure, is symmetricly set on the head of bore bit, because of its deslagging area is little, hole for water spraying is not established at the apical head middle part in addition, and causes deslagging not smooth, influences drilling efficiency; Its perforation is distributed in apical head by the set-up mode in periphery four holes, middle three holes, in actual use Chang Yinzhong tooth and heel teeth unbalance stress and influence application life (middle tooth is stressed less, and heel teeth is stressed bigger); In addition, less because of the outside cone angle of its bore bit head, how below 3 °, its rotational resistance that creeps into is increased; Moreover different because of three perforations in the middle of it with the aperture of peripheral four perforations, cause the hard alloy columnar teeth of institute's insert also inequality, thereby increased the difficulty of processing and manufacturing.
The purpose of this utility model provides a kind of novel drill carriage cold-pressing balls tooth drill bit with regard to being to overcome above-mentioned weak point of the prior art.
The purpose of this utility model can adopt following measure to realize:
It comprises head and skirt section two parts to drill carriage of the present utility model with the cold-pressing balls tooth drill bit, bore bit is provided with hole for water spraying, ash pit and perforation, and be installed in the interior hard alloy columnar teeth of perforation, in the nose-circle of its head, be provided with two perforations and a hole for water spraying; Two the arc-like rows slag chutes of processing on head conical ring face are divided into the awl cambered surface that two segment length do not wait with the conical ring face.Be distributed with three perforations on long awl cambered surface, its short awl cambered surface is provided with two perforations.
The outside cone angle of head is 4 ° in the utility model; Be arranged on the centre point of centre point, the hole for water spraying of processing in ash pit of perforation in the apical head circle and arc-like rows slag chute centre point altogether on same straight line, this straight line meets at the centre point of bore bit apical head circle, and perpendicular bisector formation 8 °～15 ° angles round with apical head; The angle that is arranged between two perforations on the short awl of the bore bit head cambered surface is 40 °～60 °; Be arranged on that the angle between adjacent two perforations is 40 °～60 ° in three perforations on the bore bit head length awl cambered surface; Angle between bore bit head conical ring face and the horizontal plane is 30 °～34 °; The aperture of seven perforations on the bore bit head is all identical.
The utility model has following advantage compared to existing technology:
A, since the utility model change three teeth in its nose-circle into two teeth, changing heel teeth is five teeth, and change the aperture of seven perforations into same aperture, ash pit adopts anisopleural layout type, and the conical ring face is divided into the awl cambered surface that two segment length do not wait, and is distributed with three perforations on long awl cambered surface, its short awl cambered surface is provided with two perforations, this form of structure can make seven teeth evenly stressed, accomplishes the equivalence wearing and tearing, and has simplified manufacturing process;
B, because ash pit of the present utility model is an arcuate structure, increased the ash pit area, middle part the setting up of hole for water spraying makes the deslagging effect be better than prior art greatly in addition;
The increasing of c, bore bit head outside cone angle and reducing of the angle between head conical ring face and the horizontal plane not only can reduce the rotational resistance that creeps into, and the reconditioning number of times of bore bit is increased, and have also just prolonged application life;
The drawing of accompanying drawing is described as follows:
Fig. 1 is the vertical view of prior art.
Fig. 2 is a front view of the present utility model.
Fig. 3 is the vertical view of Fig. 2.
The utility model is done with detailed description below with reference to embodiment (accompanying drawing):
Drill carriage of the present utility model uses the cold-pressing balls tooth drill bit (as Fig. 2, shown in 3) it comprises head (1) and skirt section (2) two parts, bore bit is provided with hole for water spraying (6) (7), ash pit (5) and perforation (3) (8) and be installed in hard alloy columnar teeth in the perforation, in the nose-circle of its head (1), be provided with two perforations (8) and a hole for water spraying (7), the centre point of hole for water spraying (7) is offset to bore bit head perpendicular bisector one top-cross on horizon, the center of circle of the edge in its hole and bore bit nose-circle is tangent, and the centre point of two perforations (8) is offset to the opposite side of bore bit head perpendicular bisector; Two the arc-like rows slag chutes (5) of processing on head (1) conical ring face are divided into the awl cambered surface (9) (10) that two segment length do not wait with the conical ring face, be distributed with three perforations (3) on long awl cambered surface (10), its short awl cambered surface (9) is provided with two perforations (3); Be arranged on the centre point of centre point, the hole for water spraying (6) of processing in ash pit of perforation (8) in the apical head circle and arc-like rows slag chute (5) centre point altogether on same straight line, this straight line meets at the centre point of bore bit apical head circle, and perpendicular bisector formation 12 ° angles round with apical head; The angle that is arranged between two perforations on the short awl of the bore bit head cambered surface is 48 °; Be arranged on that the angle between adjacent two perforations also is 48 ° in three perforations on the bore bit head length awl cambered surface; The outside cone angle of bore bit head is 4 °, and the angle between head conical ring face and the horizontal plane is 33 °; The aperture of seven perforations on the bore bit head is same aperture.
Claims (7)
1, a kind of drill carriage cold-pressing balls tooth drill bit, it comprises head (1) and skirt section (2) two parts, bore bit is provided with hole for water spraying (6) (7), ash pit (5) and perforation (3) (8), and be installed in the interior hard alloy columnar teeth of perforation, it is characterized in that: be provided with two perforations (8) and a hole for water spraying (7) in the nose-circle of head (1); Two the arc-like rows slag chutes (5) of processing on head conical ring face are divided into the awl cambered surface (9) (10) that two segment length do not wait with the conical ring face, are distributed with three perforations (3) on long awl cambered surface (10), and its short awl cambered surface (9) is provided with two perforations (3).
2, drill carriage according to claim 1 cold-pressing balls tooth drill bit is characterized in that: the outside cone angle of head (1) is 4 °.
3, drill carriage according to claim 1 cold-pressing balls tooth drill bit, it is characterized in that: be arranged on the centre point of centre point, processing hole for water spraying (6) of (5) in ash pit of perforation (8) in the apical head circle and arc-like rows slag chute (5) centre point altogether on same straight line, this straight line meets at the centre point of bore bit apical head circle, and perpendicular bisector formation 8 °～15 ° angles round with apical head.
4, drill carriage according to claim 1 cold-pressing balls tooth drill bit is characterized in that: the angle that is arranged between two perforations (3) on the bore bit head short awl cambered surface (9) is 40 °～60 °.
5, drill carriage according to claim 1 cold-pressing balls tooth drill bit is characterized in that: be arranged on that the angle between adjacent two perforations is 40 °～60 ° in three perforations (3) on the bore bit head length awl cambered surface (10).
6, drill carriage according to claim 1 cold-pressing balls tooth drill bit is characterized in that: the angle between bore bit head conical ring face and the horizontal plane is 30 °～34 °.
7, drill carriage according to claim 1 cold-pressing balls tooth drill bit is characterized in that: the aperture that is arranged on seven perforations (3) (8) on the bore bit head is all identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94245778 CN2210949Y (en) | 1994-11-25 | 1994-11-25 | Cold-compressed spheircal-teeth jump-bit for drill wagon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94245778 CN2210949Y (en) | 1994-11-25 | 1994-11-25 | Cold-compressed spheircal-teeth jump-bit for drill wagon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210949Y true CN2210949Y (en) | 1995-10-25 |
Family
ID=33851474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94245778 Expired - Fee Related CN2210949Y (en) | 1994-11-25 | 1994-11-25 | Cold-compressed spheircal-teeth jump-bit for drill wagon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210949Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382810A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Special drill bit for bottom anchor drilling machine |
| CN103981313A (en) * | 2014-05-07 | 2014-08-13 | 西北矿冶研究院 | Blast furnace tapping hole drill |
| CN111335818A (en) * | 2020-02-28 | 2020-06-26 | 贵州捷盛钻具股份有限公司 | Self-cooling drill bit and production method thereof |
-
1994
- 1994-11-25 CN CN 94245778 patent/CN2210949Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382810A (en) * | 2013-07-26 | 2013-11-06 | 中国矿业大学 | Special drill bit for bottom anchor drilling machine |
| CN103382810B (en) * | 2013-07-26 | 2016-01-20 | 中国矿业大学 | Anchor rig target drill of a kind of end |
| CN103981313A (en) * | 2014-05-07 | 2014-08-13 | 西北矿冶研究院 | Blast furnace tapping hole drill |
| CN111335818A (en) * | 2020-02-28 | 2020-06-26 | 贵州捷盛钻具股份有限公司 | Self-cooling drill bit and production method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |