CN207332886U - A kind of hard alloy dual-pilot cutter - Google Patents
A kind of hard alloy dual-pilot cutter Download PDFInfo
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- CN207332886U CN207332886U CN201720933050.4U CN201720933050U CN207332886U CN 207332886 U CN207332886 U CN 207332886U CN 201720933050 U CN201720933050 U CN 201720933050U CN 207332886 U CN207332886 U CN 207332886U
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- hard alloy
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- cutter
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Abstract
It the utility model is related to a kind of shield machine field, more particularly to a kind of hard alloy dual-pilot cutter, including cutter hub, hard alloy blocks and hard alloy bar；The cutter hub is equipped with alloy block groove and alloy bar groove, the alloy block groove is arranged on the left and right ends of the cutter hub, some alloy bar grooves are arranged between the alloy block groove, the hard alloy blocks insertion is installed in the alloy block groove, the hard alloy bar insertion is installed in the alloy bar groove, from cutter hub center to direction of both ends, the tip height of hard alloy bar gradually reduces；The hard alloy blocks upper surface is equipped with least one groove；By setting, the force area of hard alloy blocks is reduced, so as to strengthen cutting power to reach effectively cutting development end, increase the aperture opening ratio of cutterhead；In addition, dual-pilot cutter is when running into cobble stone, boulder, the sides of hard alloy blocks have cutter hub be protected from cobble stone, boulder direct collision, reduce hard alloy blocks and come off the probability scrapped.
Description
Technical field
It the utility model is related to a kind of shield machine field, more particularly to a kind of hard alloy dual-pilot cutter.
Background technology
Shield machine, is widely used in the engineerings such as tunnel piercing, is provided with the corresponding tool apron of its rotating cutter-head in advance
Knife, center cutter, scraper, hobboing cutter etc., wherein dual-pilot cutter mainly play trench digging tear, and dual-pilot cutter is to cut the soil body in bite
Cut the soil body in advance before, by soil body cutting whole into sections, good machining condition is created for bite group.It is primarily suitable for loose media
Stratum and sand-pebble layer, dual-pilot cutter substitutes hobboing cutter under this geological conditions, since itself is not rotated, only makees small pendulum
It is dynamic, so needing enough cutting powers to reach effectively cutting development end, increase the aperture opening ratio of cutterhead, prevent in cutter head center
Position forms mud cake, reduces the probability that cutterhead is blocked；The exposed wear-resisting property of cutter hub is poor, welding alloy is easy to fall off at the same time scraps, cuts
Cut phenomena such as plasticity and fluidity of soil is poor, the short situation of service life.
Utility model content
A kind of deficiency of the purpose of this utility model mainly for more than, there is provided hard alloy dual-pilot cutter.
To achieve these goals, the technical solution of the utility model is：
A kind of hard alloy dual-pilot cutter, including cutter hub, hard alloy blocks and hard alloy bar are provided, the cutter hub, which is equipped with, to be closed
Gold bullion groove and alloy bar groove, the alloy block groove are arranged on the left and right ends of the cutter hub, and some alloy bar grooves are arranged on institute
Between stating alloy block groove, the hard alloy blocks insertion is installed in the alloy block groove, the hard alloy bar insertion installation
In the alloy bar groove, from the cutter hub center to direction of both ends, the tip height of the hard alloy bar gradually drops
Low, the upper surface of the cutter hub is convex arc-shaped, and the centre-height of the cutter hub upper surface is higher than both ends；The hard alloy
Block upper surface is equipped with least one groove.
Preferably, the both ends of the hard alloy blocks form difference in height in horizontal plane, one end away from the cutter hub center
Higher than one end close to the cutter hub center.
Preferably, the shape of the alloy block groove and the alloy bar groove is U-shaped, the alloy block groove and the alloy
Bar groove opening direction is consistent.
Preferably, the cutter hub surface is equipped with wearing layer.
Preferably, the wearing layer is tungsten carbide particle wearing layer.
With the above structure, the groove design of hard alloy blocks subtracts the force area of hard alloy blocks to the utility model
It is few, so as to strengthen cutting power to reach effectively cutting development end, increase the aperture opening ratio of cutterhead；In addition, dual-pilot cutter is being run into greatly
During cobble, the sides of hard alloy blocks have cutter hub be protected from cobble stone, boulder direct collision, reduce welding alloy and come off and scraps
Probability.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of hard dual-pilot cutter；
Fig. 2 is a kind of structure diagram of hard dual-pilot cutter side view.
In figure：1st, cutter hub；12nd, alloy block groove；13rd, alloy bar groove；2nd, hard alloy blocks；3rd, hard alloy bar；31st, it is recessed
Groove.
Embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Remove, be fully described by, wherein, the drawings are for illustrative purposes only and are merely schematic diagrams, rather than pictorial diagram, it is impossible to manages
Solve as the limitation to this patent；In order to better illustrate the utility model embodiment, some components of attached drawing have omission, amplification
Or reduce, do not represent the size of actual product；It will be understood by those skilled in the art that some known features and its explanation in attached drawing
It may omit and will be understood by.
The described embodiments are only a part of the embodiments of the utility model for the utility model, rather than whole implementation
Example.Based on the embodiment in the utility model, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment describes in detail：
A kind of hard alloy dual-pilot cutter, including cutter hub 1, hard alloy blocks 2 and hard alloy bar 3；
The cutter hub 1 is equipped with alloy block groove 12 and alloy bar groove 13, and the alloy block groove 12 is arranged on the cutter hub 1
Left and right ends, some alloy bar grooves 13 are arranged between the alloy block groove 12, and the insertion of hard alloy blocks 2 is installed on institute
State in alloy block groove 12, the insertion of hard alloy bar 3 is installed in the alloy bar groove 13, from 1 center of cutter hub
To direction of both ends, the tip height of the hard alloy bar 3 gradually reduces, and the upper surface of the cutter hub 1 is convex arc-shaped, and institute
The centre-height for stating 1 upper surface of cutter hub is higher than both ends；2 upper surface of hard alloy blocks is equipped with least one groove 31.Using
After said structure, when hard alloy blocks 2 are started to work, the forced area of hard alloy blocks 2 is reduced, so as to strengthen cutting power
To reach effectively cutting development end, increase the aperture opening ratio of cutterhead.
In the present embodiment, the both ends of the hard alloy blocks 2 form difference in height in horizontal plane, away from the cutter hub 1
One end of the heart is higher than one end close to 1 center of cutter hub.The top of hard alloy blocks 2 first contacts ground, sand stone layer, hard alloy
Block 2 forms greater impact with ground, sand stone layer, and cutterhead load raises suddenly, and ground surface elasticity deformation, cutting force increases rapidly
Add, by setting difference in height, increase the cutting force of hard alloy blocks 2.
In the present embodiment, the shape of the alloy block groove 12 and the alloy bar groove 13 is U-shaped, the alloy block groove
12 and 13 opening direction of alloy bar groove it is consistent.Existing dual-pilot cutter is among it U-type groove, and both sides are V-groove, due to left and right
The hard alloy blocks 2 at both ends are by being brazed on the open type groove of cutter hub, and V-groove is there are bonding area is small, welding dynamics deficiency
The problem of, its side is directly hit with the cobble in sand stone layer in construction causes hard alloy blocks 2 to be easier to come off, and influences cutter
Service life；Leading cutter hub is left and right be provided at both ends with 2 corresponding U-type groove of hard alloy blocks, hard alloy blocks 2 is arranged on knife
Inside body 1, when hard alloy blocks 2 run into cobble stone, boulder, there is the protection of cutter hub 1 in the side of hard alloy blocks 2, avoids straight with cobble stone, boulder
Connect collision, reduce hard alloy blocks 2 and come off the probability scrapped.
In the present embodiment, 1 surface of cutter hub is equipped with wearing layer.Wearability of the dual-pilot cutter in operation has been effectively ensured
Can, prolong the service life, reduce replacement or maintenance cost.
In the present embodiment, the wearing layer is tungsten carbide particle wearing layer.The tungsten carbide particle wearing layer includes gold
Belong to matrix and tungsten carbide particle, the tungsten carbide particle cladding is arranged in cutter hub.
As a result of above technical scheme, the groove design of hard alloy blocks 2 subtracts the force area of hard alloy blocks 2
It is few, so as to strengthen cutting power to reach effectively cutting development end, increase the aperture opening ratio of cutterhead；In addition, dual-pilot cutter is being run into greatly
During cobble, the sides of hard alloy blocks 2 have cutter hub 1 be protected from cobble stone, boulder direct collision, reduce hard alloy blocks 2 and come off
The probability scrapped.
Obviously, above-described embodiment of the utility model patent is only intended to clearly illustrate what the utility model patent was made
Citing, and it is not the restriction to the embodiment of the utility model patent.For those of ordinary skill in the field,
Other different forms of changes or modifications may be made based on the above description.There is no need and unable to all realities
The mode of applying is exhaustive.All any modifications made within the spirit and principle of the utility model patent, equivalent substitution and change
Into etc., it should be included within the utility model scope of the claims.
Claims (5)
- A kind of 1. hard alloy dual-pilot cutter, it is characterised in that:Including cutter hub (1), hard alloy blocks (2) and hard alloy bar (3)；The cutter hub (1) is equipped with 2 alloy block grooves (12) and some alloy bar grooves (13)；The alloy bar groove (13) is arranged between 2 alloy block grooves (12)；The hard alloy blocks (2) are corresponding with the alloy block groove (12)；The hard alloy bar (3) is corresponding with the alloy bar groove (13)；From the cutter hub (1) center to both ends side To the tip height of the hard alloy bar (3) gradually reduces, and the upper surface of the cutter hub (1) is convex arc-shaped, and the knife The centre-height of body (1) upper surface is higher than both ends；Hard alloy blocks (2) upper surface is equipped with least one groove (31).
- A kind of 2. hard alloy dual-pilot cutter according to claim 1, it is characterised in that:The both ends of the hard alloy blocks (2) form difference in height in horizontal plane, and one end away from the cutter hub (1) center, which is higher than, to be connect The one end at nearly cutter hub (1) center.
- A kind of 3. hard alloy dual-pilot cutter according to claim 1, it is characterised in that：The shape of the alloy block groove (12) and the alloy bar groove (13) is U-shaped, the alloy block groove (12) and the conjunction Gold bar groove (13) opening direction is consistent.
- A kind of 4. hard alloy dual-pilot cutter according to claim 1, it is characterised in that:Cutter hub (1) surface is equipped with wearing layer.
- A kind of 5. hard alloy dual-pilot cutter according to claim 4, it is characterised in that：The wearing layer is tungsten carbide particle wearing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720933050.4U CN207332886U (en) | 2017-07-29 | 2017-07-29 | A kind of hard alloy dual-pilot cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720933050.4U CN207332886U (en) | 2017-07-29 | 2017-07-29 | A kind of hard alloy dual-pilot cutter |
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| Publication Number | Publication Date |
|---|---|
| CN207332886U true CN207332886U (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720933050.4U Active CN207332886U (en) | 2017-07-29 | 2017-07-29 | A kind of hard alloy dual-pilot cutter |
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| CN (1) | CN207332886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566220A (en) * | 2019-09-23 | 2019-12-13 | 济南重工股份有限公司 | Novel center fishtail cutter for push bench |
-
2017
- 2017-07-29 CN CN201720933050.4U patent/CN207332886U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566220A (en) * | 2019-09-23 | 2019-12-13 | 济南重工股份有限公司 | Novel center fishtail cutter for push bench |
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