CN202483582U - Novel shield hobbing cutter - Google Patents
Novel shield hobbing cutter Download PDFInfo
- Publication number
- CN202483582U CN202483582U CN2012201256045U CN201220125604U CN202483582U CN 202483582 U CN202483582 U CN 202483582U CN 2012201256045 U CN2012201256045 U CN 2012201256045U CN 201220125604 U CN201220125604 U CN 201220125604U CN 202483582 U CN202483582 U CN 202483582U
- Authority
- CN
- China
- Prior art keywords
- roller bearings
- conical roller
- hub
- cutter
- wheel hub
- 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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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
A novel shield hobbing cutter comprises a hub and a cutter ring fixed on the hub. Two back-to-back conical roller bearings are parallelly mounted, inner rings of the two conical roller bearings are fixed on a cutter shaft, the two conical roller bearings share an outer ring, a left end cap and a right cap are respectively mounted on both sides of the two conical roller bearings, floating oil seals are arranged between the end caps and the conical roller bearings, and dustproof mazes are arranged on contact faces of the end caps and the hub. The double-row conical roller bearings are adopted, and the conical roller bearings share the outer ring, are better in rigidity and can bear larger load, so that bearing jam is avoided when wearability of the hub decreases. In addition, the dustproof mazes are arranged on two sides, matched with the end caps, of the hub, so that entry of impurities such as dust and muddy water is reduced, risks of damages to the floating oil seals and the bearings are lowered, and normal operation of the novel shield hobbing cutter is guaranteed.
Description
Invention field
The utility model relates to a kind of shield machine accessory, is specifically related to a kind of cutter that is installed on the cutter head of shield machine.
Technical background
Fast development along with Chinese Urbanization; Traffic is more and more crowded, and development of urban rail traffic is more and more urgent, and subway is as the important component part of urban track traffic; Develop also more and more faster; Shield machine is as the construction equipment of subterranean tunnel driving, and is high with its drivage efficiency, mechanization degree is high, little to rock stratum disturbance on every side, advantages such as ambient influnence is little is obtained the extensive use of subway tunnel driving.Hobboing cutter is a kind of cutter that rolls the fragmentation fractured rock that utilizes cutter ring, in middle hard rock and composite bottom layer, is used widely.In the course of work of hobboing cutter, often receive various impacts and bad working environment such as vibrations and high hydraulic pressure, usually cause bearing seal to be lost efficacy; Muddy water gets into hobboing cutter inside and causes damage of bearings, causes hobboing cutter to be scrapped, along with the use of hobboing cutter; The wheel hub wearing and tearing cause intensity to descend distortion and cause the stuck hobboing cutter eccentric wear that causes of bearing, this situation also to happen occasionally, to this situation; We have improved the mechanism of hobboing cutter; Use double-row bearing to replace single-row bearing, between end cap and wheel hub, add dust seal together, improve the back like this and well solve these two problems.
Summary of the invention
The purpose of the utility model is to provide that a kind of bearing working is more stable, sealing performance shield structure hobboing cutter more reliably.
This novel shield structure hobboing cutter; Comprise wheel hub and be fixed on the cutter ring on the wheel hub, it is characterized in that, back-to-back in the wheel hub two taper roll bearings are installed side by side; The inner ring of two taper roll bearings is fixed on the cutter shaft; Two shared outer rings of taper roll bearing are equipped with left and right two end caps respectively in the both sides of two taper roll bearings, are provided with float grease seal between end cap and the taper roll bearing.
The contact surface of end cap and wheel hub is provided with dustproof labyrinth.
Basic load is born by back-to-back taper roll bearing during hobboing cutter work, and the utility model adopts double-row conical bearing to substitute the shared outer ring of this bearing; Rigidity is better, can bear bigger load, when the wheel hub tear strength descends; Avoid bearing stuck, simultaneously, the place that cooperates with end cap in the wheel hub both sides is provided with dustproof labyrinth; Reduce impurity such as dust and muddy water and get into, reduced the risk of float grease seal and damage of bearings, guaranteed the hobboing cutter operate as normal.
Description of drawings
Fig. 1 is the utility model front view
Fig. 2 is the partial enlarged drawing of the dustproof labyrinth seal of Fig. 1 C portion
Among the figure: 1, cutter ring, 2, wheel hub, 3, left end cap, 4, cutter shaft, 5, float grease seal, 6, the outer ring, 7, inner ring, 8, right end cap, 9, taper roll bearing, 10, dustproof labyrinth.
The specific embodiment
Below in conjunction with figure the utility model is done detailed marginal data
In Fig. 1 and Fig. 2; This novel shield structure hobboing cutter comprises wheel hub 2 and is fixed on the cutter ring 1 on the wheel hub 2, back-to-back in the wheel hub 2 two taper roll bearings 9 is installed side by side; The inner ring 7 of two taper roll bearings 9 is fixed on the cutter shaft 4; Two taper roll bearing 9 shared outer rings 6 are equipped with left end cap 3 and right end cap 8 respectively in the both sides of two taper roll bearings 9, be provided with float grease seal 5 between end cap and the taper roll bearing.
The contact surface of end cap and wheel hub 2 is provided with dustproof labyrinth 10.
Claims (2)
1. novel shield structure hobboing cutter; Comprise wheel hub and be fixed on the cutter ring on the wheel hub, it is characterized in that, back-to-back in the wheel hub two taper roll bearings are installed side by side; The inner ring of two taper roll bearings is fixed on the cutter shaft; Two shared outer rings of taper roll bearing are equipped with left and right two end caps respectively in the both sides of two taper roll bearings, are provided with float grease seal between end cap and the taper roll bearing.
2. a kind of novel shield structure hobboing cutter according to claim 1 is characterized in that the contact surface of end cap and wheel hub is provided with dustproof labyrinth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201256045U CN202483582U (en) | 2012-03-29 | 2012-03-29 | Novel shield hobbing cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201256045U CN202483582U (en) | 2012-03-29 | 2012-03-29 | Novel shield hobbing cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202483582U true CN202483582U (en) | 2012-10-10 |
Family
ID=46958009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201256045U Expired - Fee Related CN202483582U (en) | 2012-03-29 | 2012-03-29 | Novel shield hobbing cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202483582U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374615A (en) * | 2019-07-23 | 2019-10-25 | 中建三局集团有限公司 | A kind of combination cutter ring Hob for cutting rock for Suporting structure |
| CN114517685A (en) * | 2022-01-14 | 2022-05-20 | 武汉恒立工程钻具股份有限公司 | Shield constructs quick-witted hobbing cutter of no oil blanket |
-
2012
- 2012-03-29 CN CN2012201256045U patent/CN202483582U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374615A (en) * | 2019-07-23 | 2019-10-25 | 中建三局集团有限公司 | A kind of combination cutter ring Hob for cutting rock for Suporting structure |
| CN114517685A (en) * | 2022-01-14 | 2022-05-20 | 武汉恒立工程钻具股份有限公司 | Shield constructs quick-witted hobbing cutter of no oil blanket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20180329 |