CN211573523U - Hob cutter ring and hob - Google Patents
Hob cutter ring and hob Download PDFInfo
- Publication number
- CN211573523U CN211573523U CN201921218329.XU CN201921218329U CN211573523U CN 211573523 U CN211573523 U CN 211573523U CN 201921218329 U CN201921218329 U CN 201921218329U CN 211573523 U CN211573523 U CN 211573523U
- Authority
- CN
- China
- Prior art keywords
- hob
- cutter ring
- wear
- ring body
- cutter
- 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.)
- Active
Links
Images
Abstract
The utility model provides a hobbing cutter ring and hobbing cutter relates to shield structure machine accessory technical field, including the cutter ring body, be provided with a plurality of recesses on the circumference lateral wall of cutter ring body, the recess is followed the one side of cutter ring body extends to the another side, and is a plurality of the recess is followed the circumference interval of cutter ring body is arranged. The plurality of grooves formed in the circumferential direction of the cutter ring body change the circumferential side wall structure of the hob cutter ring, so that the hob cutter ring can generate strong excavating force on rocks during working, the engaging force between the hob cutter ring and the stratum during shield tunneling is increased, the self-rotating capacity of the hob is improved, the hob can effectively rotate, the eccentric wear of the hob cutter ring is reduced, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of shield constructs machine accessory technique and specifically relates to a hobbing cutter ring and hobbing cutter is related to.
Background
With the development of subway construction, the shield method is widely applied to urban traffic construction. The hob is a tool used for tunneling on a shield tunneling machine, and generally consists of a plurality of hob rings. When the hob works, quartz and sand in the stratum erode and rub the outer side wall of the hob ring main body, and strong impact force is generated on the outer side wall to damage the hob ring, so that the hob is damaged and loses efficacy.
As shown in fig. 1, a conventional hob generally includes a hob ring 100 ', a hob body 200', a retainer ring 300 ', an end cover 700', a sealing member 600 ', a shaft 500' and a bearing 400 ', and the hob ring 100' can be detached and replaced after being worn. The cutter body 200 'is externally provided with a hobbing cutter ring 100' and a retainer ring 300 ', is internally provided with a bearing 400', and is provided with a sliding sealing piece 600 'and an end cover 700' at two sides. The formation of the formation belongs to a water-rich sandy gravel formation, the content of pebbles reaches more than 80%, the abrasion to the hobbing cutter ring 100 'is abnormal and serious during shield tunneling, the construction risk caused by replacement is great, and the abrasion problem of the hobbing cutter ring 100' seriously restricts the progress of iron landing construction. At present, most of hob rings 100' are made of alloy steel, and the surface is subjected to heat treatment to improve the hardness or increase a wear-resistant layer, so that the wear resistance is improved, and the service life is prolonged.
The hob ring 100' has the following defects in use: when the shield is excavated, aiming at a sandy gravel stratum, the sandy gravel stratum cannot provide enough autorotation reaction for the hob cutter ring 100 'installed on a cutter head, and the hob can generate eccentric wear, so that the hob cutter ring 100' is damaged prematurely.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hobbing cutter sword circle and hobbing cutter to solve current hobbing cutter sword circle and when the shield constructs the excavation, to the sand cobble stratum, the enough rotation reaction of hobbing cutter sword circle installed on the blade disc can't be given in the sand cobble stratum, the hobbing cutter will produce the eccentric wear, leads to the technical problem of the too early damage of hobbing cutter sword circle.
The utility model provides a hobbing cutter ring, hobbing cutter ring includes the cutter ring body on the lateral wall of cutter ring body, wind the circumference of cutter ring body is provided with a plurality of recesses.
Furthermore, a plurality of the grooves are arranged at intervals, and the extending direction of the grooves is parallel to the axis of the cutter ring body.
Furthermore, a wear-resistant column is arranged between any two adjacent grooves.
Furthermore, a plurality of blind holes with openings facing away from the center of the cutter ring body are formed in the circumferential side wall of the cutter ring body, and the blind holes are formed between the two grooves; the bottom of the wear-resistant column is arranged in the blind hole, and the top of the wear-resistant column protrudes out of the circumferential side wall of the cutter ring body.
Further, the wear-resistant column comprises a connecting part and a protruding part, and the connecting part is used for being connected with the blind hole; the convex part is a spherical bulge; the connecting portion are cylindrical, the blind hole is the cylindrical structure that corresponds with the connecting portion.
Furthermore, the wear-resistant column is made of hard alloy.
Furthermore, both sides of cutter ring body all are provided with first wearing layer.
Furthermore, a second wear-resistant layer is arranged on the circumferential side wall of the cutter ring body and located between every two adjacent grooves.
Furthermore, the inner side wall of the cutter ring body is provided with a third wear-resistant layer at intervals.
A hobbing cutter comprises the hobbing cutter ring.
The utility model provides a hobbing cutter ring, hobbing cutter ring includes the cutter ring body on the lateral wall of cutter ring body, wind the circumference of cutter ring body is provided with a plurality of recesses. The plurality of grooves arranged in the circumferential direction of the cutter ring body change the circumferential side wall structure of the hob cutter ring, increase the engaging force between the hob cutter ring and the stratum when the shield is used for tunneling, so that the hob cutter ring can generate strong excavating force to rocks during working, improve the self-rotating capacity of the hob cutter, and ensure that the hob cutter can effectively rotate, thereby reducing the eccentric wear of the hob cutter ring and prolonging the service life.
The utility model provides a hobbing cutter, including above-mentioned hobbing cutter ring, when the shield constructs the excavation, install the hobbing cutter rotation in the blade disc, the one side rotates along with the blade disc. Utilize the impact inertial energy of the rotatory production of blade disc high speed, drive the hobbing cutter roll and produce impact crushing and cut the effect of crushing by a roll, with the broken cobble before the blade disc, because the hobbing cutter rim sets up the recess has improved hobbing cutter self pivoted ability, reduces the emergence of eccentric wear, has improved the life of hobbing cutter.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a conventional hob;
fig. 2 is a schematic structural view of a hob ring provided in embodiment 1 of the present invention;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
fig. 4 is a schematic structural diagram of a wear-resistant post of a hob ring provided in embodiment 1 of the present invention;
fig. 5 is a schematic structural view of a hob ring provided in embodiment 2 of the present invention;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is an enlarged view of portion I of FIG. 5;
fig. 8 is a schematic structural diagram of a wear-resistant post of a hob ring provided in embodiment 2 of the present invention;
fig. 9 is a schematic structural diagram of a hob provided in the embodiment of the present invention.
Icon: 100' -hob ring; 200' -a blade body; 300' -a retainer ring; 400' -a bearing; 500' -axis; 600' -a seal; 700' -end cap; 100-hob ring; 110-a cutter ring body; 111-grooves; 120-wear resistant column; 121-a projection; 122-a connecting portion; 130-a first wear layer; 140-a second wear layer; 150-a third wear layer; 200-a cutter body; 300-a retainer ring; 400-a bearing; 500-axis; 600-a seal; 700-end cap.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 2-4, the utility model provides a hobbing cutter ring 100, hobbing cutter ring 100 includes cutter ring body 110, be provided with a plurality of recesses 111 on the circumference lateral wall of cutter ring body 110, recess 111 is followed one side of cutter ring body 110 extends to the another side, and is a plurality of recess 111 is followed the circumference interval of cutter ring body 110 is arranged.
During the use, a plurality of recesses 111 on the circumference lateral wall of cutter ring body 110 when the shield is tunneled have increased the snap-in force between hobbing cutter ring 100 and the stratum can improve hobbing cutter ring 100 self turnability, and then improves hobbing cutter self effective rotation, can reduce hobbing cutter ring 100's eccentric wear to improve hobbing cutter ring 100's life.
The extending direction of the groove 111 is parallel to the axis of the cutter ring body 110.
Specifically, the groove 111 is a circular groove 111.
In this embodiment, the number of the circular grooves 111 is 24, and the circular grooves 111 are uniformly arranged in the circumferential direction of the outer side wall of the cutter ring body 110, and when viewed from the axial direction of the hob ring 100, the profile of the circular groove 111 is an arc with a radius of 10 mm.
The size of the circular groove 111 is not limited to an arc with a radius of 10 mm, and the size can be adjusted according to requirements, so that the relative stress condition of the friction between the cutter and the pebble is met, and different geological requirements are met.
The groove 111 can also be in other structural shapes, and can be optimized according to different stratum structures.
As shown in fig. 3, a wear-resistant post 120 is disposed between any two adjacent grooves 111.
Specifically, hobbing cutter ring 100 includes wear-resisting post 120, wear-resisting post 120 sets up two between the recess 111, wear-resisting post 120 salient in circumference lateral wall when using, accomplish the operation of rolling by wear-resisting post 120, avoid the excessive wearing and tearing of cutter ring body 110, increased cutter ring body 110's wear resistance, improved hobbing cutter ring's life, reduction in production cost.
The wear resistant post 120 may be fixed to the circumferential sidewall of the cutter ring body 110 by welding.
Preferably, a plurality of blind holes with openings facing away from the center of the cutter ring body 110 are formed in the circumferential side wall of the cutter ring body 110, and the blind holes are formed between the two grooves 111; the bottom of the wear-resistant column 120 is installed in the blind hole, and the top of the wear-resistant column 120 protrudes out of the circumferential side wall of the cutter ring body 110.
Specifically, the wear-resistant post 120 is connected to the blind hole by welding.
The blind hole is internally provided with internal threads, the outer surface of the wear-resistant column 120 is provided with external threads corresponding to the blind hole, and the wear-resistant column 120 is installed in the blind hole through threaded connection.
As shown in fig. 4, the wear-resistant post 120 includes a connecting portion 122 and a protruding portion 121, wherein the connecting portion 122 is used for connecting with the blind hole; the convex part 121 is a spherical bulge; the connecting portion 122 is a cylinder, and the blind hole has a cylindrical structure corresponding to the connecting portion 122.
Specifically, the depth of the blind hole is adapted to the length of the connecting portion 122, so that only the protruding portion 121 protrudes out of the circumferential side wall of the cutter ring body 110 after the wear-resistant cylinder 120 is installed in the blind hole. Guarantee the bulge 121 of wear-resisting post 120 can fully contact with the loam layer, avoid only cutter ring body 110 to cut the ground, improve hobbing cutter ring 100's life.
Preferably, the wear-resistant post 120 is made of cemented carbide.
The hard alloy has a series of excellent performances of high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance and the like, particularly high hardness and wear resistance, basically keeps unchanged even at the temperature of 500 ℃, and still has high hardness at the temperature of 1000 ℃. Therefore, the wear-resistant post 120 is made of hard alloy, so as to prevent premature wear of the cutter ring body 110 and improve the digging ability of the hob ring 100 during use.
Preferably, both sides of the cutter ring body 110 are provided with the first wear-resistant layer 130.
The wearing layer adopts the spraying mode to fix the front and the back of cutter ring body 110, and the spraying is in the position that is close to of cutter ring body 110 the circumference lateral wall, so that hob cutter ring 100 can improve when contacting with the rock hob cutter ring 100's life.
In particular, the first wear resistant layer 130 may be a tungsten carbide wear resistant alloy layer.
Preferably, a second wear-resistant layer 140 is disposed on a circumferential side wall of the cutter ring body 110, and the second wear-resistant layer 140 is located between two adjacent grooves 111. The abrasion resistance is improved, the outer diameter of the hob ring 100 is enlarged, and the service life of the hob is prolonged.
Specifically, the second wear-resistant layer 140 is welded on the outer circumference of the cutter ring body 110, and the thickness of the second wear-resistant layer 140 may be 3-6 mm. The abrasion speed of the cutter is delayed through the second abrasion-resistant layer 140, and the service life of the hob ring 100 is prolonged.
In particular, the second wear resistant layer 140 may be a tungsten carbide wear resistant alloy layer.
Preferably, the inner side wall of the cutter ring body 110 is provided with a third wear-resistant layer 150 at intervals.
Because the hob ring 100 changes the outer side wall structure of the hob ring body 110, a plurality of grooves 111 are provided to increase the biting force of the hob ring 100 in the excavation process, and meanwhile, the impact force of the stratum to the hob ring 100 is also increased. Because the hob ring 100 is intended to be connected to the hob body 200 and is fixed by the retaining ring 300. In order to prevent impact force from affecting the fit between the hob ring 100 and the hob body 200, which may cause looseness and the like, the inner side wall of the hob ring body 110 is provided with a third wear-resistant layer 150, which increases the wear resistance between the inner side wall of the hob ring body 110 and the hob body 200, so that the hob ring 100 and the hob body 200 are well fitted during use.
In particular, the third wear resistant layer 150 may also be a tungsten carbide wear resistant alloy layer.
Example 2
As shown in fig. 5, 6, 7, and 8, the difference from embodiment 1 is that the blind hole may be an annular groove, the annular groove is disposed between two grooves 111, the wear-resistant post 120 is an annular wear-resistant post, the wear-resistant post includes a connecting portion 122 and a protruding portion 121, the connecting portion 122 fits into the annular groove, and the protruding portion 121 protrudes from the circumferential side wall of the holder body 110. The top of the protrusion 121 is arc-shaped when viewed from the axial direction of the hob ring 100; the tops of the protrusions 121 are also arc-shaped, viewed perpendicular to the longitudinal cross-sectional direction of the wear-resistant cylinder 120.
As shown in fig. 9, a hob includes the hob ring 100 described above.
Specifically, the hob comprises a hob body 200, a retainer ring 300, an end cover 700, a sealing element 600, a shaft 500, a bearing 400 and the hob ring 100; the hob ring 100 is fixed on the outer surface of the hob body 200 through a retainer ring 300, the shaft 500 and the bearing 400 are installed inside the hob body 200, the end cap 700 is installed at one side of the hob body 200, and the sealing member 600 is installed at both sides of the hob body 200, and is used for sealing a gap between the end cap 700 and the hob body 200.
To sum up, the utility model provides a hobbing cutter ring 100, hobbing cutter ring 100 includes cutter ring body 110, be provided with a plurality of recesses 111 on the circumference lateral wall of cutter ring body 110, recess 111 is followed one side of cutter ring body 110 extends to the another side, and is a plurality of recess 111 is followed the circumference interval of cutter ring body 110 is arranged. The plurality of grooves 111 arranged in the circumferential direction of the cutter ring body 110 increase the engaging force between the hob cutter ring 100 and the stratum when the shield tunneling machine tunnels, improve the self-rotating capacity of the hob cutter, ensure that the hob cutter can effectively rotate, thereby reducing the eccentric wear of the hob cutter ring 100 and prolonging the service life.
The utility model provides a hobbing cutter, including above-mentioned hobbing cutter ring 100, when the shield constructs the excavation, install the hobbing cutter rotation in the blade disc, the one side rotates along with the blade disc. Utilize the impact inertial energy of the rotatory production of cutter head high speed, drive the hobbing cutter roll and produce impact crushing and cut the effect of crushing by grinding, with the broken pebble in front of the cutter head, because the last recess 111 that sets up of hobbing cutter sword circle 100 has improved hobbing cutter self pivoted ability, reduces the emergence of eccentric wear, has improved the life of hobbing cutter.
The utility model provides a hobbing cutter ring 100 and hobbing cutter have following advantage:
1. the plurality of grooves 111 arranged in the circumferential direction of the cutter ring body 110 change the circumferential side wall structure of the hob cutter ring 100, so that the hob cutter ring can generate strong excavating force on rocks during working, the rotating capacity of the hob cutter is improved, the hob cutter can effectively rotate, eccentric wear of the hob cutter ring 100 is reduced, and the service life of the hob cutter ring is prolonged.
2. Any adjacent two be provided with wear-resisting post 120 between the recess 111, wear-resisting post 120 protrusion in the operation of rolling is accomplished by wear-resisting post 120 to the circumference lateral wall, avoids cutter ring body 110's excessive wearing and tearing, has increased cutter ring body 110's wear resistance, has improved the life of cutter ring, reduction in production cost.
3. The two surfaces of the cutter ring body 110 are both provided with a first wear-resistant layer 130; a second wear-resistant layer 140 is disposed on a circumferential side wall of the cutter ring body 110, and the second wear-resistant layer 140 is located between two adjacent grooves 111. The abrasion resistance and impact resistance of the cutting teeth can be obviously improved, and the service life of the hob ring 100 is prolonged.
4. The third wear-resistant layer 150 is arranged on the inner side wall of the cutter ring body 110 at intervals, so that impact force is prevented from affecting the matching between the hob ring 100 and the hob body 200.
5. The utility model provides a hobbing cutter has changed 100 outer fringe structures of hobbing cutter sword circle, makes it produce very strong excavation power to the rock at the during operation to replace current hobbing cutter sword circle 100's extrusion force, when the blade disc is rotatory recess 111 cuts into the rock and breaks away from the stratum with its excavation, realizes cutting into the tunnelling at a high speed, has effectively improved the broken rock efficiency of hobbing cutter sword circle 100 in the sandy gravel stratum.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. The hob ring is characterized by comprising a hob ring body, wherein a plurality of grooves are formed in the side wall of the hob ring body in the circumferential direction around the hob ring body;
the two surfaces of the cutter ring body are provided with first wear-resistant layers;
a second wear-resistant layer is arranged on the circumferential side wall of the cutter ring body and is positioned between two adjacent grooves;
and a third wear-resistant layer is arranged on the inner side wall of the cutter ring body at intervals.
2. The hob ring according to claim 1, wherein a plurality of the grooves are arranged at intervals, and the extending direction of the grooves is parallel to the axis of the ring body.
3. The hob ring according to claim 2, wherein a wear resistant post is provided between any two adjacent grooves.
4. The hob ring according to claim 3, wherein the circumferential side wall of the ring body is provided with a plurality of blind holes with openings facing away from the center of the ring body, the blind holes being disposed between the two grooves;
the bottom of the wear-resistant column is arranged in the blind hole, and the top of the wear-resistant column protrudes out of the circumferential side wall of the cutter ring body.
5. The hob ring according to claim 4, wherein the wear-resistant post comprises a connection portion and a protruding portion, the connection portion being adapted to connect with the blind hole; the convex part is a spherical bulge;
the connecting portion are cylindrical, the blind hole is the cylindrical structure that corresponds with the connecting portion.
6. The hob ring according to claim 3, wherein the wear-resistant post is made of cemented carbide.
7. A hob, characterized in, that it comprises a hob ring according to any one of the claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218329.XU CN211573523U (en) | 2019-07-30 | 2019-07-30 | Hob cutter ring and hob |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921218329.XU CN211573523U (en) | 2019-07-30 | 2019-07-30 | Hob cutter ring and hob |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211573523U true CN211573523U (en) | 2020-09-25 |
Family
ID=72523634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921218329.XU Active CN211573523U (en) | 2019-07-30 | 2019-07-30 | Hob cutter ring and hob |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211573523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302671A (en) * | 2020-11-16 | 2021-02-02 | 武汉大学 | Automatic power eccentric wear prevention shield hobbing cutter |
| CN113605909A (en) * | 2021-07-30 | 2021-11-05 | 西南交通大学 | Novel TBM hobbing cutter ring |
-
2019
- 2019-07-30 CN CN201921218329.XU patent/CN211573523U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302671A (en) * | 2020-11-16 | 2021-02-02 | 武汉大学 | Automatic power eccentric wear prevention shield hobbing cutter |
| CN113605909A (en) * | 2021-07-30 | 2021-11-05 | 西南交通大学 | Novel TBM hobbing cutter ring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6367569B1 (en) | Replaceable multiple TCI kerf ring | |
| CN211573523U (en) | Hob cutter ring and hob | |
| CA2805146A1 (en) | Composite drill bit | |
| CN112012760B (en) | Tunnel boring machine and rock-breaking cutter head structure thereof | |
| CN209067213U (en) | A kind of high efficient driving heavy type shield cutter | |
| CN211370403U (en) | Wear-resistant hobbing cutter ring with alloy teeth | |
| CN209761436U (en) | heavy-duty inserted cutter ring | |
| CN209212163U (en) | A kind of multitool wing drill bit of insert floating composite teeth | |
| CN206220857U (en) | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock | |
| CN112302671B (en) | Automatic power eccentric wear prevention shield hobbing cutter | |
| CN206368687U (en) | A kind of rotary cutting tooth | |
| CN113653500A (en) | Method for reducing abrasion of edge hob | |
| CN216110719U (en) | Cutter of tunneling machine | |
| CN213016364U (en) | High-strength rotary digging tooth | |
| CN202520319U (en) | Hob with hard alloy edges | |
| CN210598828U (en) | Novel tricone bit of oil and gas exploration exploitation | |
| CN202194574U (en) | Compound drill bit | |
| CN110685606B (en) | Fixed cutting structure-roller composite drill bit | |
| CN215595589U (en) | Hob cutter ring with novel structure | |
| CN214616550U (en) | Novel hobbing cutter | |
| CN212201907U (en) | Surface strengthening structure of roller bit | |
| CN216008505U (en) | Composite rock breaking cutter | |
| CN205189864U (en) | Dig pick tool bit for coal | |
| CN2375753Y (en) | Single-roller bit | |
| CN218816409U (en) | Shield cutter head and shield machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201216 Address after: 100020 Zhou Jiajing, Guanzhuang, Chaoyang District, Beijing Patentee after: CCCC FIRST HIGHWAY ENGINEERING GROUP Co.,Ltd. Patentee after: THE THIRD ENGINEERING Co.,Ltd. OF THE HIGHWAY ENGINEERING BUREAU OF CCCC Address before: No.10, Jingsheng North 3rd Street, Jinqiao Science and technology industrial base, Tongzhou Park, Zhongguancun Science and Technology Park, Tongzhou District, Beijing Patentee before: THE THIRD ENGINEERING Co.,Ltd. OF THE HIGHWAY ENGINEERING BUREAU OF CCCC |
|
| TR01 | Transfer of patent right |