CN206458473U - A kind of improved shield tear cutter - Google Patents
A kind of improved shield tear cutter Download PDFInfo
- Publication number
- CN206458473U CN206458473U CN201621308874.4U CN201621308874U CN206458473U CN 206458473 U CN206458473 U CN 206458473U CN 201621308874 U CN201621308874 U CN 201621308874U CN 206458473 U CN206458473 U CN 206458473U
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- cutter
- alloy
- parent
- tear
- shield
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a kind of improved shield tear cutter, including cutter parent, cutter parent center of top has alloy placed in the middle, there is bottom alloy on cutter parent, and there be the angle of elevation alloy corner both sides at the top of cutter parent.There is the modified shield tear cutter effect to reduce the abrasion of cutter when excavating the soil body, balancing earth-pressure shielding machine is smoothly tunneled in long range operation, reduces cutter changing number of times, improve the operating efficiency that cutter excavates the soil body.
Description
Technical field
The utility model is related to the shield cutter in shield-tunneling construction in Geotechnical Engineering field, more particularly to a kind of improved shield
Structure tears cutter.
Background technology
At present, balancing earth-pressure shielding machine is more and more applied to constructing tunnel, it is necessary to various stratum be adapted to, when shield exists
When being tunneled in cohesiveless soil, because the mark of cohesiveless soil soil layer is used to be worth larger, coefficient of friction height, the features such as stream plasticity is poor can make
Obtaining the heavy wear of shield tearing cutter, scraper cannot protect, and loss is serious, drivage efficiency is low.Current shield tearing cutter only exists
Angle alloy is welded with the top and bottom of cutter parent, its thickness can not meet shield machine and be tunneled in long range cohesiveless soil；And
And cutter parent center of top does not have safeguard measure, cause parent impaired serious, replacing cutter number of times is more, and drivage efficiency is low.
The content of the invention
The defect or deficiency existed for existing shield machine cutter, the purpose of this utility model is to improve there is provided one kind
Shield tear cutter.
In order to realize above-mentioned technical assignment, the utility model is adopted the following technical scheme that：
A kind of improved shield tear cutter, including cutter parent, cutter parent center of top has alloy placed in the middle, in cutter
There is bottom alloy on parent, there be the angle of elevation alloy corner both sides at the top of cutter parent.
Other features of the present utility model are：
The angle of elevation alloy, alloy placed in the middle and bottom alloy use wolfram steel.
The angle of elevation alloy, alloy placed in the middle and bottom alloy and cutter parent are using welding.
The angle of elevation alloy is highly 55mm, and thickness 45mm, width is 76mm.
The alloy placed in the middle is highly 45mm, and thickness 16mm, width is 76mm.
The bottom alloy is highly 40mm, and thickness 25mm, width is 76mm.
The cutter parent is highly 316.3mm, and width is 146mm, thickness 76mm.
There is mounting hole on the cutter parent, the size of the mounting hole is Φ 65mm.
The angle of elevation alloy of corner both sides can be lifted at the top of improved shield tear cutter of the present utility model, cutter parent
The whole height of cutter, the alloy placed in the middle of cutter parent center of top, for reducing the abrasion at the top of parent, can strengthen cutter
The wearability at top simultaneously plays a part of protecting scraper；So that whole cutter effectively reduces the abrasion of cutter when excavating the soil body, make
Balancing earth-pressure shielding machine can be tunneled smoothly in long range operation, reduce cutter changing number of times, is improved cutter and is excavated the soil body
Operating efficiency.
Brief description of the drawings
Fig. 1 is improved shield tear cutter structure schematic diagram of the present utility model.
Fig. 2 is Fig. 1 left view.
Fig. 3 is the structural representation of a specific embodiment, wherein, left figure is front view, and right figure is left view.
The utility model is described in further detail with embodiment with reference to the accompanying drawings.
Embodiment
With reference to Fig. 1 and Fig. 2, the present embodiment provides a kind of improved shield tear cutter, including cutter parent 4, and cutter is female
The center of top of body 4 has alloy 2 placed in the middle, there is bottom alloy 3 on cutter parent 4, also has height in the top corner both sides of cutter parent 4
Angle alloy 1.
Referring to Fig. 3, in the present embodiment, angle of elevation alloy 1, alloy placed in the middle 2 and bottom alloy 3 use wolfram steel, wherein, the angle of elevation
The height of alloy 1 is 55mm, is welded in the top corner of cutter parent 4, and the highly tear cutter than using in the past lifts 15mm, enters one
Step protection both sides scraper, reduces the loss percentage of scraper, a width of 76mm of cutter parent 4 is constant；Due to two blocks of alloys at the top of original-pack knife
Between cutter parent 4 tunneled in inviscid soil layer abrasion it is larger, the center of top of parent 4 welds one piece of residence again at the top of cutter
In middle alloy 2, the present embodiment, the height of alloy 2 placed in the middle is 45mm, and thickness 16mm, width is 76mm, to reduce tool wear
Rate.
The height of bottom alloy 3 is 40mm, and thickness 25mm, width is 76mm, is welded on cutter parent 4, one is entered to cutter
Step protection.
There is mounting hole on cutter parent 4, the size of the mounting hole is Φ 65mm.Axle sleeve, axle sleeve one are welded in mounting hole
There are Φ 76mm, the length 25mm concentric shaft shoulder in side.
The shaft shoulder has the skewed slot of 24mm wide (10 °) with the bottom of cutter parent 4 (having on the surface of the shaft shoulder).
Screw thread is made with screw tap 1-1/8-7UNC made in U.S.A and mounting hole insertion in the middle of the bottom of cutter parent 4.
The specific size of improved shield tear cutter that the present embodiment is made is (Fig. 3)：
Total high 316.5mm, width 146mm, thickness 76mm.There is a R20mm circular arc both sides, bottom and both sides be R200mm,
R221.8mm inverted arc.There are 30 ° of chamferings on angle of elevation alloy 1.
The improved shield tear cutter principle that the present embodiment is made below is illustrated：
Angle of elevation alloy 1, alloy placed in the middle 2 and bottom alloy 3 use wolfram steel, and hardness is high, anti-wear performance is good；Angle of elevation alloy 1
The whole height of cutter is lifted, strengthens the wearability at the top of cutter and plays a part of protecting scraper；The alloy placed in the middle 2 at top is used
In reducing the abrasion at the top of cutter, cutter is protected；Improve the efficiency that cutter excavates the soil body.
Using the improved shield tear cutter, the abrasion of cutter when shield machine excavates the soil body can be effectively reduced, is made
Shield machine can be tunneled smoothly in long distance driving, reduce cutter changing number of times, improve operating efficiency.
Claims (8)
1. a kind of improved shield tear cutter, including cutter parent (4), cutter parent (4) center of top have alloy placed in the middle
(2), there is bottom alloy (3) on cutter parent (4), it is characterised in that there be the angle of elevation corner both sides at the top of cutter parent (4)
Alloy (1).
2. improved shield tear cutter as claimed in claim 1, it is characterised in that the angle of elevation alloy (1), alloy placed in the middle
(2) and bottom alloy (3) use wolfram steel.
3. improved shield tear cutter as claimed in claim 1, it is characterised in that the angle of elevation alloy (1), alloy placed in the middle
(2) use and weld with cutter parent (4) with bottom alloy (3).
4. improved shield tear cutter as claimed in claim 1 or 2, it is characterised in that the angle of elevation alloy (1) is highly
55mm, thickness 45mm, width is 76mm.
5. improved shield tear cutter as claimed in claim 1 or 2, it is characterised in that the alloy (2) placed in the middle is highly
45mm, thickness 16mm, width is 76mm.
6. improved shield tear cutter as claimed in claim 1 or 2, it is characterised in that the bottom alloy (3) is highly
40mm, thickness 25mm, width is 76mm.
7. improved shield tear cutter as claimed in claim 1 or 2, it is characterised in that the cutter parent (4) is highly
316.3mm, width is 146mm, thickness 76mm.
8. improved shield tear cutter as claimed in claim 1 or 2, it is characterised in that have peace on the cutter parent (4)
Hole is filled, the size of the mounting hole is Φ 65mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308874.4U CN206458473U (en) | 2016-12-01 | 2016-12-01 | A kind of improved shield tear cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621308874.4U CN206458473U (en) | 2016-12-01 | 2016-12-01 | A kind of improved shield tear cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458473U true CN206458473U (en) | 2017-09-01 |
Family
ID=59691085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621308874.4U Active CN206458473U (en) | 2016-12-01 | 2016-12-01 | A kind of improved shield tear cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458473U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779643A (en) * | 2019-01-23 | 2019-05-21 | 中铁七局集团第三工程有限公司 | Canal in Loess Area earth pressure balanced shield, EPBS and pass through tunneling boring layer of sand construction method with tiny disturbance |
| CN111894612A (en) * | 2020-08-11 | 2020-11-06 | 中铁电气化局集团有限公司 | Wear-resisting gauge protection tearing knife |
| CN112253222A (en) * | 2020-08-26 | 2021-01-22 | 煤科集团沈阳研究院有限公司 | Pipe jacking tunneling equipment for roadway rescue |
-
2016
- 2016-12-01 CN CN201621308874.4U patent/CN206458473U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109779643A (en) * | 2019-01-23 | 2019-05-21 | 中铁七局集团第三工程有限公司 | Canal in Loess Area earth pressure balanced shield, EPBS and pass through tunneling boring layer of sand construction method with tiny disturbance |
| CN111894612A (en) * | 2020-08-11 | 2020-11-06 | 中铁电气化局集团有限公司 | Wear-resisting gauge protection tearing knife |
| CN112253222A (en) * | 2020-08-26 | 2021-01-22 | 煤科集团沈阳研究院有限公司 | Pipe jacking tunneling equipment for roadway rescue |
| CN112253222B (en) * | 2020-08-26 | 2022-05-10 | 中煤科工集团沈阳研究院有限公司 | Pipe jacking tunneling equipment for roadway rescue |
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| GR01 | Patent grant |