CN210134936U - Shield constructs hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment - Google Patents
Shield constructs hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment Download PDFInfo
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- CN210134936U CN210134936U CN201920538287.1U CN201920538287U CN210134936U CN 210134936 U CN210134936 U CN 210134936U CN 201920538287 U CN201920538287 U CN 201920538287U CN 210134936 U CN210134936 U CN 210134936U
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- end cover
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- hob
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Abstract
The utility model belongs to the technical field of shield constructs machine cutter and makes. A shield that adapts to the high water pressure environment constructs the hobbing cutter seal structure and hobbing cutter, the shield that adapts to the high water pressure environment constructs the hobbing cutter seal structure and hobbing cutter, include arbor, bearing, cutter hub, upper end cover, lower end cover, floating seal and rotatory GRILL ring, the inner circle interference fit of the bearing assembles on the arbor, the outer lane interference fit of the bearing assembles in the cutter hub, the floating seal sets up in inboard of inner wall of upper end cover and cutter hub and inboard of inner wall of lower end cover and cutter hub; the rotary GRIN ring is arranged between the outer wall of the upper end cover and the inner wall of the cutter hub, and the floating seal is arranged at the inner end of the rotary GRIN ring between the outer wall of the lower end cover and the inner wall of the cutter hub; the hob comprises the hob sealing structure. The rotary GREEN ring is additionally arranged at the matching position of the inner wall of the cutter hub and the outer wall of the end cover, so that the hob cannot be blocked in a muddy water environment, the inside of the hob does not need to be cleaned regularly, the sealing failure risk is reduced, and the stability and the continuity of the working of the hob under the working condition of high water pressure are ensured.
Description
Technical Field
The utility model belongs to the technical field of shield constructs the machine cutter and makes, concretely relates to shield constructs hobbing cutter seal structure and hobbing cutter of adaptation high water pressure environment that underground works used.
Background
The hob is an excavating tool for crushing hard rocks, is arranged on an excavating hob of large-scale trenchless construction equipment such as a shield, a TBM (tunnel boring machine), a jacking pipe and the like, and is used for rolling rock on a face and stripping the rock from the face. The hob mainly comprises a hob ring, a hob hub, a hob shaft, a bearing, a floating seal, an end cover and the like; the floating seal is a key part for ensuring the internal pressure of the hob and the normal work of a bearing, but the dynamic pressure difference of about 3bar can be only borne under the dynamic pressure of the floating seal of the conventional shield hob at present. When the slurry shield is tunneled, the hydraulic pressure of the tunnel face is large, a conventional shield hobbing cutter cannot bear high hydraulic pressure, the requirement of the slurry shield during tunneling cannot be met far away, when the pressure difference between the external pressure of the hobbing cutter and the internal pressure of the hobbing cutter is larger than 3bar, external slurry and rock slag easily enter the inside of the hobbing cutter through the floating seal between the cutter body and the end cover, the hobbing cutter is caused to lose efficacy, the tunneling efficiency of the shield machine is reduced, and the construction progress is influenced.
The high water pressure hobbing cutter that shield market was commonly used at present, its inside balanced valve structure that adds, the principle of balanced valve structure is that inside outside air gets into the hobbing cutter, realizes the inside and outside pressure balance of hobbing cutter, can get into a small amount of rock sediment when following the air admission, and the rock sediment will block up the balanced valve for a long time not clear up, causes the balanced valve inefficacy to lose the meaning of high water pressure hobbing cutter.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the problem that above-mentioned exists with not enough, provide a shield structure hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment, its sealed requirement that can adapt to under the high water pressure environment just guarantees the life of hobbing cutter.
In order to achieve the purpose, the adopted technical scheme is as follows:
a shield hob sealing structure adapting to a high water pressure environment comprises a cutter shaft, a bearing, a cutter hub, an upper end cover and a lower end cover, wherein an inner ring of the bearing is assembled on the cutter shaft in an interference fit mode, an outer ring of the bearing is assembled inside the cutter hub in an interference fit mode, the shield hob sealing structure further comprises a floating seal and a rotary GRE ring, and the floating seal is arranged on the inner sides of the inner wall of the upper end cover and the inner wall of the cutter hub and the inner sides of the inner wall of the lower end cover and the inner wall of the cutter hub; the rotary GREEN rings are arranged between the outer wall of the upper end cover and the inner wall of the cutter hub and between the outer wall of the lower end cover and the inner wall of the cutter hub; the floating seal is located at an inner end of the rotary GREEN.
According to a shield structure hobbing cutter seal structure who adapts to high water pressure environment, it is protruding all to be equipped with first annular on the inner terminal surface of upper end cover and bottom end cover, be equipped with on the bellied inner wall of first annular with the first mount pad of floating seal complex, the inner wall middle part of sword hub is equipped with the second annular arch, be equipped with on the bellied both sides inner wall of second annular with floating seal complex second mount pad, the bellied middle part inner wall of second annular with the outer lane interference fit of bearing is located and is equipped with the installation on the sword hub inner wall in the two bellied outsides of second annular rotatory glary circle's annular.
According to the shield structure hobbing cutter sealing structure suitable for the high water pressure environment, a third annular bulge is further arranged inside the first annular bulge on the inner end faces of the upper end cover and the lower end cover, the inner wall of the third annular bulge is matched with the outer wall of the cutter shaft, and a sealing ring is arranged between the inner wall of the third annular bulge and the outer wall of the cutter shaft.
According to the shield hob sealing structure suitable for the high water pressure environment, the end face of the hob hub is flush with or located on the inner side of the end faces of the upper end cover and the lower end cover.
According to the shield structure hobbing cutter sealing structure suitable for the high water pressure environment, the end face of the cutter hub is located on the inner side of the end faces of the upper end cover and the lower end cover, and the outer walls of the upper end cover and the lower end cover located on the outer side of the end face of the cutter hub are provided with inwards-contracted inclined planes or steps.
According to the shield hob sealing structure suitable for the high water pressure environment, the upper end cover and the lower end cover are fixedly connected to the two ends of the cutter shaft.
According to the shield hob sealing structure suitable for the high water pressure environment, oil plugs are arranged on the upper end cover and the lower end cover at positions corresponding to the bearings.
According to the shield structure hobbing cutter sealing structure suitable for the high water pressure environment, the number of the bearings is two, the two bearings are arranged on the cutter shaft in the front and at the back, and the first spacer ring is arranged between the inner rings of the two bearings.
According to a shield structure hobbing cutter seal structure who adapts to high water pressure environment, sword hub outer wall cover is equipped with the cutter ring, the quantity of cutter ring sets up to two, sets up on the sword hub around two cutter rings, is provided with the second spacer ring between two cutter rings, is equipped with the retaining ring of card on the sword hub on the cutter ring right side that lies in the right side.
A hob, comprising a shield hob sealing structure adapted to a high water pressure environment according to any one of the preceding items.
By adopting the technical scheme, the beneficial effects are as follows:
the utility model discloses a set up the outer wall of end cover inside the inner wall of sword hub, increase rotatory glay circle in the cooperation department of sword hub inner wall and end cover outer wall, rotatory glay circle dynamic bearing capacity can reach 15bar, rotatory glay circle high pressure resistance ability is higher than floating oil seal far away, the performance is superior to the hobbing cutter of adding balanced valve structure inside the hobbing cutter on the market far away, this shield constructs the hobbing cutter and can not take place the blocking phenomenon when tunnelling in the muddy water environment, do not need regularly to clear up inside, the risk of sealing failure has been reduced, hobbing cutter job stabilization nature and continuity under the operating mode of high water pressure have been guaranteed; the end face of the cutter hub is flush with the end faces of the upper end cover and the lower end cover or is positioned on the inner side of the end faces of the upper end cover and the lower end cover, rock debris can be prevented from gathering on the inner wall of the side edge of the cutter hub, when the end face of the cutter hub is positioned on the inner side of the end faces of the upper end cover and the lower end cover, the outer walls of the upper end cover and the lower end cover which are positioned on the outer side of the end face of the cutter hub are arranged to be inclined planes or steps which contract inwards, the rock debris can be further prevented from gathering on the upper end cover and the lower end cover, and therefore the rock debris is prevented from being brought into the rotating Glare ring.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.
Fig. 1 shows a structural schematic diagram of a shield hob sealing structure adapted to a high water pressure environment according to the present invention.
Number in the figure:
the cutter comprises a lower end cover 1, a cylindrical head bolt 2, a cutter shaft 3, a sealing ring 4, a floating seal 5, a rotary GREEN ring 6, a cutter hub 7, a second annular bulge 71, a cutter ring 8, a second spacer ring 9, a retainer ring 10, an upper end cover 11, a first annular bulge 111, a third annular bulge 112, a bearing 12, an oil plug 13 and a first spacer ring 14.
Detailed Description
In order to make the purpose, technical features and technical effects of the technical solution of the present invention clearer, the drawings of the embodiments of the present invention are combined together, and the example solution of the embodiments of the present invention is clearly and completely described. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment discloses a shield hob sealing structure adapted to a high water pressure environment, which includes a cutter shaft 3, a bearing 12, a cutter hub 7, an upper end cover 11 and a lower end cover 1, wherein an inner ring of the bearing 12 is assembled on the cutter shaft 3 in an interference fit manner, an outer ring of the bearing 12 is assembled inside the cutter hub 7 in an interference fit manner, the shield hob sealing structure further includes a floating seal 5 and a rotary gley ring 6, and the floating seal 5 is arranged on the inner sides of the inner walls of the upper end cover 11 and the cutter hub 7 and the inner sides of the inner walls of the lower end cover 1 and the cutter; the rotary GREEN ring 6 is arranged between the outer wall of the upper end cover 11 and the inner wall of the cutter hub 7 and between the outer wall of the lower end cover 1 and the inner wall of the cutter hub 7; a floating seal 5 is located at the inner end of the rotary greige ring 6.
Specifically, the inner end faces of the upper end cover 11 and the lower end cover 1 are respectively provided with a first annular bulge 111, the inner wall of the first annular bulge 111 is provided with a first mounting seat matched with floating seal, the middle part of the inner wall of the cutter hub 7 is provided with a second annular bulge 71, the inner walls of two sides of the second annular bulge 71 are provided with second mounting seats matched with the floating seal 5, the inner wall of the middle part of the second annular bulge 71 is in interference fit with the outer ring of the bearing 12, and the inner walls of the cutter hub positioned at two outer sides of the second annular bulge 71 are provided with annular grooves for mounting the rotary GRILL ring 6.
A third annular protrusion 112 is further arranged inside the first annular protrusion 111 on the inner end faces of the upper end cover 11 and the lower end cover 1, the inner wall of the third annular protrusion 112 is matched with the outer wall of the cutter shaft, a sealing ring 4 is arranged between the inner wall of the third annular protrusion and the outer wall of the cutter shaft, oil leakage from the screwed joint of the upper end cover 11, the lower end cover 1 and the cutter shaft 3 is prevented, and the inner end face of the third annular protrusion 112 is further used for limiting axial movement of an inner ring of the bearing 12.
In order to prevent rock slag from accumulating on the inner wall of the side edge of the cutter hub 7 and prevent the rock slag from entering the bearing 12 due to relative movement, the end face of the cutter hub 7 is flush with the end faces of the upper end cover 11 and the lower end cover 1 or is positioned inside the end faces of the upper end cover 11 and the lower end cover 1. When the end face of the cutter hub 7 is positioned at the inner side of the end faces of the upper end cover 11 and the lower end cover 1, the outer walls of the upper end cover 11 and the lower end cover 1 positioned at the outer side of the end face of the cutter hub 7 are provided with slopes or steps which are contracted inwards.
In this embodiment, the upper end cap 11 and the lower end cap 1 are fixedly connected to two ends of the cutter shaft 3 through the cylindrical head bolt 2, and the oil plugs 13 are disposed at positions corresponding to the bearings 12 on the upper end cap 11 and the lower end cap 1, so as to supply lubricating oil to the inside of the bearings 12. The number of the bearings 12 is two, the two bearings 12 are arranged on the cutter shaft 3 in a front-back mode, and a first spacer ring 14 is arranged between inner rings of the two bearings 12. The outer wall of the cutter hub 7 is sleeved with cutter rings 8, the number of the cutter rings 8 is two, the two cutter rings 8 are arranged on the cutter hub 7 in a front-back mode, a second spacer ring 9 is arranged between the two cutter rings 8, and a retainer ring 10 clamped on the cutter hub 7 is arranged on the right side of the cutter ring 8 on the right side and used for limiting the axial movement of the cutter ring 8.
The embodiment also discloses a hob, which comprises the shield hob sealing structure adaptive to the high water pressure environment.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a," "an," "two," and similar referents in the specification and claims of the present application does not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the above specific embodiments without departing from the scope of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides a shield constructs hobbing cutter seal structure that adapts to high water pressure environment, includes arbor, bearing, sword hub, upper end cover and lower end cover, the inner circle interference fit assembly of bearing is in on the arbor, the outer lane interference fit assembly of bearing is inside sword hub, its characterized in that still includes:
floating seals which are arranged on the inner sides of the inner walls of the upper end cover and the cutter hub and on the inner sides of the inner walls of the lower end cover and the cutter hub; and
the rotary GREEN rings are arranged between the outer wall of the upper end cover and the inner wall of the cutter hub and between the outer wall of the lower end cover and the inner wall of the cutter hub;
wherein the floating seal is located at an inner end of the rotating GREEN.
2. The shield structure hobbing cutter sealing structure adapted to the high water pressure environment of claim 1, wherein the inner end faces of the upper end cover and the lower end cover are respectively provided with a first annular protrusion, the inner wall of the first annular protrusion is provided with a first mounting seat matched with floating seal, the middle part of the inner wall of the cutter hub is provided with a second annular protrusion, the inner walls of two sides of the second annular protrusion are provided with second mounting seats matched with floating seal, the inner wall of the middle part of the second annular protrusion is in interference fit with the outer ring of the bearing, and the inner wall of the cutter hub positioned at two outer sides of the second annular protrusion is provided with a ring groove for mounting the rotary GRILAR ring.
3. A shield hob sealing structure adapted to a high water pressure environment according to claim 1, wherein a third annular protrusion is further provided inside the first annular protrusion on the inner end surfaces of the upper end cover and the lower end cover, the inner wall of the third annular protrusion matches with the outer wall of the hob shaft, and a sealing ring is provided between the inner wall of the third annular protrusion and the outer wall of the hob shaft.
4. A shield hob sealing structure adapted to a high hydraulic pressure environment according to claim 1, wherein an end face of the cutter hub is flush with or located inside an end face of the upper end cover and the lower end cover.
5. The shield hob sealing structure adapted to the high hydraulic environment of claim 1, wherein the end face of the hob hub is located inside the end faces of the upper end cover and the lower end cover, and the outer walls of the upper end cover and the lower end cover located outside the end face of the hob hub are provided with inwardly contracted slopes or steps.
6. A shield hob sealing structure adapted to a high water pressure environment according to claim 1, wherein the upper end cover and the lower end cover are fixedly connected to two ends of the hob shaft.
7. A shield hob sealing structure adapted to a high hydraulic environment according to claim 1, wherein oil plugs are provided on the upper end cover and the lower end cover at positions corresponding to the bearings.
8. A shield hobbing cutter sealing structure adaptive to a high water pressure environment according to claim 1, characterized in that the number of the bearings is two, the two bearings are arranged on the cutter shaft in front and back, and a first spacer ring is arranged between inner rings of the two bearings.
9. A shield hobbing cutter sealing structure adapted to high water pressure environment according to claim 1, characterized in that, the cutter hub is sleeved with cutter rings, the number of cutter rings is two, two cutter rings are arranged on the cutter hub in front and at the back, a second spacer ring is arranged between the two cutter rings, and a retainer ring clamped on the cutter hub is arranged on the right side of the cutter ring on the right side.
10. A hob, characterized in that it comprises a shield hob sealing structure adapted to a high water pressure environment according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920538287.1U CN210134936U (en) | 2019-04-19 | 2019-04-19 | Shield constructs hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920538287.1U CN210134936U (en) | 2019-04-19 | 2019-04-19 | Shield constructs hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment |
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| Publication Number | Publication Date |
|---|---|
| CN210134936U true CN210134936U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920538287.1U Active CN210134936U (en) | 2019-04-19 | 2019-04-19 | Shield constructs hobbing cutter seal structure and hobbing cutter that adapts to high water pressure environment |
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| Country | Link |
|---|---|
| CN (1) | CN210134936U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
| CN114961732A (en) * | 2022-03-29 | 2022-08-30 | 中国矿业大学(北京) | Hob structure and cutter ring design method of vertical shaft full-face heading machine and heading machine |
-
2019
- 2019-04-19 CN CN201920538287.1U patent/CN210134936U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278321A (en) * | 2021-12-31 | 2022-04-05 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembling process |
| CN114278321B (en) * | 2021-12-31 | 2023-08-22 | 株洲硬质合金集团有限公司 | TBM hob pressure release device, TBM hob and assembly process |
| CN114961732A (en) * | 2022-03-29 | 2022-08-30 | 中国矿业大学(北京) | Hob structure and cutter ring design method of vertical shaft full-face heading machine and heading machine |
| CN114961732B (en) * | 2022-03-29 | 2023-02-17 | 中国矿业大学(北京) | Hob structure and cutter ring design method of vertical shaft full-face heading machine and heading machine |
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