CN206722837U - One kind uses shield cutter made of big crystal grain hard alloy - Google Patents
One kind uses shield cutter made of big crystal grain hard alloy Download PDFInfo
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- CN206722837U CN206722837U CN201720460679.1U CN201720460679U CN206722837U CN 206722837 U CN206722837 U CN 206722837U CN 201720460679 U CN201720460679 U CN 201720460679U CN 206722837 U CN206722837 U CN 206722837U
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Abstract
It the utility model is related to one kind and use shield cutter made of big crystal grain hard alloy, including cutter body, it is located at the multi-disc wing with being fixed with cutter body, main cutting tooth is all fixedly connected with every wing, 0 ° of the center position of cutter body is fixed with tapered centre tooth, and the gage surface of every wing side is provided with gage surface tooth, multiple gauge glomerocryst wear ribs are provided with by gage surface tooth, runner is provided between every wing, the runner is provided with the water hole to be connected with drill bit inner chamber；Cutter body, wing, main cutting tooth, tapered centre tooth and gage surface tooth are all made up of big crystal grain hard alloy.It is simple in construction, and after the position of sound production tapered centre tooth of 0 ° of shield cutter center, in drilling, contract enters rock stratum all the time for cone and cone for it, the pivot of cutter is in a kind of relatively stable situation all the time, so as to considerably reduce the horizontal swing of cutter, make driving hole more regular, also drilling life of bit is lifted.
Description
Technical field
Drilling equipment technical field is the utility model is related to, more particularly to one kind uses shield made of big crystal grain hard alloy
Structure cutter.
Background technology
Shield cutting tool is mainly used in the shield machine driving in subway, tunnel, and its structure is that one is welded before cutter hub
Row or two rows more than cylindric alloy.
Existing all cutters can all produce horizontal swing in headwork, and the small size shield cutter of mining driving
It is especially true, the reason for because of drilling machinery, horizontal swing possibility can all be increased by the variation of lithological of driving rock stratum, so as to go out
It is existing：Tunnel the irregular phenomenon in hole；Increase and the unbalanced fierce moment of composite sheet operation element is collided, come then therefrom
Influence driving hole quality and cause the damaged in advance of shield cutter.
The content of the invention
The shortcomings that in order to overcome above-mentioned prior art, the purpose of this utility model be to provide it is a kind of simple in construction, and in shield
After 0 ° of position of sound production tapered centre tooth of structure center cutter, in drilling, contract enters rock stratum, the rotation of cutter all the time for cone and cone for it
Center is in a kind of relatively stable situation all the time, so as to considerably reduce the horizontal swing of cutter, driving hole is more advised
Then, the shield cutter for the new mining center band taper composite sheet that drilling life of bit lifts also is enable.
To reach above-mentioned purpose, the utility model uses following technical scheme, and one kind is made of big crystal grain hard alloy
Shield cutter, including cutter body, be located on cutter body with the multi-disc wing being fixed with, and have between multi-disc wing
There is gap, main cutting tooth is all fixedly connected with every wing, 0 ° of the center position of described cutter body is fixed with center
Conical tooth, the tapered centre tooth position are provided with gauge in the circular center of multi-disc wing, the gage surface of every wing side
Face tooth, described gage surface tooth side are provided with multiple gauge glomerocryst wear ribs, runner, the runner are provided between described every wing
It is provided with the water hole to be connected with drill bit inner chamber；
Described cutter body, wing, main cutting tooth, tapered centre tooth and gage surface tooth is all by big crystal grain hard alloy
It is made, the hardness of the big crystal grain hard alloy is 88-89HRC, a diameter of 13.41mm-13.47mm.
Described wing is three, and is welded on cutter body or is integrated with cutter body.
Described tapered centre tooth is welded on 0 ° of the center position of cutter body, and the height of tapered centre tooth is
13mm。
Described main cutting tooth is welded on wing, and the angle between main cutting tooth and wing is 15 ° -20 °, the master
The radius of cutting tooth is 13mm.
The bottom of the cutter body is provided with groove, and the edge of the groove is provided with connection screw thread.
Described gauge glomerocryst wear rib is located on the gage surface of wing side by side vertically, and the height of gauge glomerocryst wear rib
For 13mm.
The beneficial effects of the utility model are：It is simple in construction, mining shield cutter center cone in 0 ° of center position of sound production
Shape tooth as bit central broken rock, driving element after, the design arrangement of shield wing outwards elapses, and makes bit body center portion space
Increase, so, the overall flow of drilling fluid can be more unobstructed, the cooling capacity of all composite sheets is strengthened, to landwaste
Upper row is unobstructed much sooner, so as to tool life.
Design combination improves shield cutter rate of penetration and drilling depth more than, improves drill bit shaft bottom working environment,
Drilling life of bit is improved, reduces drilling cost.Improve drilling efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is positive structure diagram of the present utility model.
In figure：1. main cutting tooth；2. tapered centre tooth；3. gage surface tooth；4. gauge glomerocryst wear rib；5. runner；6. water
Hole；7. wing；8. gage surface；9. groove；10. cutter body.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
In description of the present utility model, it is to be understood that term " " center ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply and be signified
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
New limitation.
Term " first ", " second " be only used for describe purpose, and it is not intended that instruction or imply relative importance or
The implicit quantity for indicating indicated technical characteristic.Thus, " first " is defined, the feature of " second " can be expressed or imply
Ground includes one or more this feature.In description of the present utility model, unless otherwise indicated, " multiple " are meant that two
Individual or two or more.
Embodiment 1
One kind as illustrated in fig. 1 and 2 uses shield cutter made of big crystal grain hard alloy, including cutter body 10, if
And there is certain gap, every wing 7 between multi-disc wing 7 with the multi-disc wing 7 being fixed with cutter body 10
On be all fixedly connected with main cutting tooth 1,0 ° of the center position of described cutter body 10 is fixed with tapered centre tooth 2, in this
Heart conical tooth 2 is located at the circular center of multi-disc wing 7, and the gage surface 8 of the every side of wing 7 is provided with gage surface tooth 3, institute
The side of gage surface tooth 3 stated is provided with multiple gauge glomerocryst wear ribs 4, is provided with runner 5 between described every wing 7, on the runner 5
Provided with the water hole 6 to be connected with drill bit inner chamber；Described cutter body 10 is connected with standard drill pipe, in order to ensure to facilitate knife
Tool body 10 is connected with standard drill pipe, is provided with groove 9 in the bottom of cutter body 10 as shown in Figure 2, the edge of the groove is provided with
The screw thread of connection screw thread, the connection screw thread and standard drill pipe is in mating connection, while cutter is in the direction of rotation and drilling rod and knife
It is identical to have the tightening direction of body connection screw thread, ensures during rock drilling, cutter will not be fallen off, described main cutting
Tooth 1 is substantially carried out rock drilling, during design, by the arrangement of wing 7 relative to current outside passage, makes the cutter body heart
Portion space increases, and so the overall flow of drilling fluid can be more unobstructed, the cooling capacity of all composite sheets is strengthened, drilling well
Liquid be by cutter inner chamber, it is and unobstructed much sooner to the upper row to landwaste by water hole 6, so as to extend drilling life of bit,
In order to avoid at present colliding unbalanced fierce moment of composite sheet operation element, can then influence to tunnel hole matter therefrom
Measure and cause the damaged in advance of shield cutter, 0 ° of the center position for being located at cutter body 10 is fixed with tapered centre tooth 2, it
Contract enters rock stratum all the time for cone and cone during drilling, and the pivot of drill bit is in a kind of relatively stable situation all the time, so as to big
The amplitude reduction horizontal swing of cutter, makes driving hole more regular, also cutter life is lifted；Described gauge
What face tooth 3 was used to turn over cutter gets into the cave and polishes, and can make to get into the cave more smooth, facilitate putting for follow-up tubing string and other items
Enter, in all Tool Designs, to consider all standing in shaft bottom, its wing 7, which is arranged, must cross or close to cutter body 10
0 ° of center position.And when cutter tunnel rotate when, the linear velocity difference on centre and outer side edges edge is huge, and it is by outside extremely
Interior rapid decrement, so as to also make it that main cutting tooth 1 is huge to rock stratum scraping, tunneling function difference, because centre is to rock stratum
Cutting function significantly weaken after, be also formed the rock stratum of center and the overall reaction resistance of cutter be significantly increased,
So as to influence the overall driving speed of drill bit.After the position of sound production tapered centre tooth 2 of 0 ° of center, the broken rock task at center is just in
Heart conical tooth 2 is completed, and has both realized all standing of the cutter to shaft bottom, while solve shield cutter wing again to cross center
Puzzlement.So, reaction resistance of the rock stratum of shaft bottom center to drill bit also can significantly weaken, and reach fast lifting
The purpose of rate of penetration.
Embodiment 2
On the basis of embodiment 1, in order to ensure during rock drilling, because wing is too many, easily there is swaging clamp
Phenomenon occur, described wing 7 is three, and is welded on cutter body 10 or is integrated with cutter body 10, described
Cutter body 10 is integrated with wing 7, or is welded together, and is enhanced the globality of cutter body 10 and wing 7, is avoided
Situation about being broken or wing comes off occurs.
Contract enters rock stratum, cutter all the time for cone and cone when further, in order to ensure that tapered centre tooth 2 can be crept into
Pivot be in a kind of relatively stable situation all the time, described tapered centre tooth 2 is welded on the center of cutter body 10
On 0 ° of position, and the height of tapered centre tooth 2 is 13mm.
Further, in order to ensure the fastness of main cutting tooth 1, described main cutting tooth 1 is welded on wing 7, and main
Angle between cutting tooth 1 and wing 7 is 15 ° -20 °, and the radius of the main cutting tooth 1 is 13mm.Using 15 ° -20 ° of the elevation angle
It can ensure that main cutting tooth 1 can carry out quick rock drilling during rock drilling, while will not occur because of the too big generation of angle
Situation about fractureing.
Described cutter body 10, wing 7, main cutting tooth 1, tapered centre tooth 2 and gage surface tooth 3 is all hard by big crystal grain
Matter alloy is made, and the hardness of the big crystal grain hard alloy is 88-89HRC, a diameter of 13.41mm-13.47mm, preferable diameter
For 13.44mm.The big crystal grain hard alloy belongs to one kind of hard alloy, and hard alloy is the hard chemical combination by refractory metal
Thing and binding metal pass through a kind of alloy material made of powder metallurgical technique.Hard alloy have high hardness, wear-resisting, intensity and
A series of premium properties such as toughness is preferable, heat-resisting, corrosion-resistant, particularly its high rigidity and wearability, even in 500 DEG C of temperature
Also it is held essentially constant under degree, still has very high hardness at 1000 DEG C.
Above example is only for example, not forming to the scope of protection of the utility model to of the present utility model
Limitation, every design same or analogous with the utility model belonged within the scope of protection of the utility model.
Claims (6)
1. one kind uses shield cutter made of big crystal grain hard alloy, it is characterised in that including cutter body（10）, it is located at knife
Has body（10）On multi-disc wing with being fixed with（7）, and multi-disc wing（7）Between there is gap, every wing（7）On
All it is fixedly connected with main cutting tooth（1）, described cutter body（10）0 ° of center position be fixed with tapered centre tooth（2）,
The tapered centre tooth（2）Positioned at multi-disc wing（7）Circular center, every wing（7）The gage surface of side（8）It is provided with
Gage surface tooth（3）, described gage surface tooth（3）Side is provided with multiple gauge glomerocryst wear ribs（4）, described every wing（7）It
Between be provided with runner（5）, the runner（5）It is provided with the water hole to be connected with drill bit inner chamber（6）；
Described cutter body（10）, wing（7）, main cutting tooth（1）, tapered centre tooth（2）With gage surface tooth（3）All it is by big
Crystal grain hard alloy is made, and the hardness of the big crystal grain hard alloy is 88-89HRC, a diameter of 13.41mm-13.47mm.
2. one kind according to claim 1 uses shield cutter made of big crystal grain hard alloy, it is characterised in that described
Wing（7）It is three, and is welded on cutter body（10）Upper or and cutter body（10）It is integrated.
3. one kind according to claim 1 uses shield cutter made of big crystal grain hard alloy, it is characterised in that described
Tapered centre tooth（2）It is welded on cutter body（10）0 ° of center position on, and tapered centre tooth（2）Height be 13mm.
4. one kind according to claim 1 uses shield cutter made of big crystal grain hard alloy, it is characterised in that described
Main cutting tooth（1）It is welded on wing（7）On, and main cutting tooth（1）With wing（7）Between angle be 15 ° -20 °, the master
Cutting tooth（1）Radius be 13mm.
5. one kind according to claim 1 uses shield cutter made of big crystal grain hard alloy, it is characterised in that described
Cutter body（10）Bottom be provided with groove（9）, the groove（9）Edge be provided with connection screw thread.
6. one kind according to claim 1 uses shield cutter made of big crystal grain hard alloy, it is characterised in that described
Gauge glomerocryst wear rib（4）Wing is located at side by side vertically（7）Gage surface（8）On, and gauge glomerocryst wear rib（4）Height
For 13mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460679.1U CN206722837U (en) | 2017-04-28 | 2017-04-28 | One kind uses shield cutter made of big crystal grain hard alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720460679.1U CN206722837U (en) | 2017-04-28 | 2017-04-28 | One kind uses shield cutter made of big crystal grain hard alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206722837U true CN206722837U (en) | 2017-12-08 |
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ID=60507284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720460679.1U Active CN206722837U (en) | 2017-04-28 | 2017-04-28 | One kind uses shield cutter made of big crystal grain hard alloy |
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| CN (1) | CN206722837U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
-
2017
- 2017-04-28 CN CN201720460679.1U patent/CN206722837U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374620A (en) * | 2019-08-25 | 2019-10-25 | 贵州大学 | The exploitation of mining heading equipment is crushed header structure |
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