CN104234720A - Double-edged spherical-tooth hob and arranging method thereof - Google Patents
Double-edged spherical-tooth hob and arranging method thereof Download PDFInfo
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- CN104234720A CN104234720A CN201410339520.5A CN201410339520A CN104234720A CN 104234720 A CN104234720 A CN 104234720A CN 201410339520 A CN201410339520 A CN 201410339520A CN 104234720 A CN104234720 A CN 104234720A
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Abstract
The invention relates to a double-edged spherical-tooth hob and an arranging method of the double-edged spherical-tooth hob. The double-edged spherical-tooth hob has the structure that the outer diameter of the double-edged hob is 17 inches, i.e. 432mm, spherical teeth are arranged on a hob ring of the disk-shaped hob, the hob ring in a flat-edged type is adopted, the diameter of each spherical tooth is 30mm, and the thickness t of the hob ring is not less than 30mm; hemispherical teeth are adopted, and the outer diameter of each spherical tooth on the plane of the hob ring is 30mm; in order to improve the rock-breaking efficiency of the spherical teeth, the spherical teeth are not suitable to be arranged too densely or sparsely, and the center distance of the spherical teeth is 60mm; the clear distance among every two spherical teeth is 30mm, and the height of the spherical teeth which are protruded from the hob ring is 15mm; the distance d between two cutters in the double-edged hob is 80mm to 120mm. The hardening processing of the hob ring comprises the following steps of surfacing an anti-abrasive protecting layer; manufacturing the spherical teeth by adopting hard alloys, wherein the hardness HRC is controlled between 52 and 55. The double-edged spherical-tooth hob has the advantages that the anti-abrasive performance is improved by 50 percent, the heading speed is increased by 25 percent, the cutters on a hob disk are uniformly stressed, the abrasion tends to be consistent, the hob-replacing frequency is decreased, the work efficiency is improved, and the double-edged spherical-tooth hob is convenient in construction.
Description
Technical field
What the present invention relates to is a kind of novel twolip insert cutter and cutters layout method thereof, be applicable to weathered sandstone and similar type compared with the shield-tunneling construction in hard formation.This method for arranging can effectively reduce the wear extent of hobboing cutter cutter, extends cutting-tool's used life, reduces number of changing knife, improves the operating efficiency of shield-tunneling construction.
Background technology
Shield method is due to advantages such as safety are high, geological adaptability is strong, construction infection is little, and oneself becomes a kind of main construction method that the underground foundations such as urban track traffic, railway, highway, water delivery, gas transmission, blowdown are built at present.
As the cutterhead directly contacted with Rock And Soil in shield-tunneling construction, being positioned at shield machine foremost, is that shield machine realizes one of core component of tunnel excavation function.The digging process of cutterhead is cutter on cutterhead and the interactional process of Rock And Soil.The main tool that shield cutter cuts as shield driving, its type selecting is the important content that shield structure geological adaptability is studied with arranging, whether its configuration is applicable to the geological conditions of application project, directly affects the application life of the cutterhead of shield machine, cutting effect, unearthed situation, driving speed and efficiency of construction.The cutter that current shield cutter configures mainly contains two classes: a class cuts class cutter, and a class is rolling class cutter.Rolling cutter not only rotates with cutterhead, and also make spinning motion, rock breaking efficiency is good simultaneously, is applicable to tunnel in harder rock stratum.According to the shape of blade, hobboing cutter can be divided into: disk cutter, profile of tooth hobboing cutter (ball tooth and steel-tooth); Can be divided into according to installation site: positive hobboing cutter, central hob, limit hobboing cutter.Disk cutter is the disk-shaped hobboing cutter of cutterhead, can be divided into single-blade hob, double-edged hobbing cutter and three sword hobboing cutters according to the quantity of blade.In ground consisting of hard rock, the application life of hobboing cutter depends primarily on the abrasion resistance of cutter ring.Disk cutter blade is generally wedge shape, and the area of blade and rock contact strengthens gradually along with the increase of wearing and tearing.Flat sword disk cutter is more or less the same after cutter ring wearing and tearing with before the contact area of rock and wearing and tearing, so all have employed flat sword disk cutter in the shield-tunneling construction of a lot of hard rock environment at present.Although simple, the broken rock amount of flat sword disk cutter structure is large, when constructing in uneven bad ground and competent bed, often there is the problem such as rapid wear, cutter ring fracture in the hobboing cutter of cutterhead periphery.Although can by thickening cutter ring, improving hardness and adopting the mode of double-edged hobbing cutter to solve, effect be also not obvious.Now insert cutter can be used.Insert cutter is the hobboing cutter of tungsten carbide button's ball tooth on cutter ring, and relative to common disk cutter, under thrust and torsional interaction, first ball tooth contacts with rock stratum, and the cutter ring of cutterhead weares and teares ball tooth in advance, and then abrasion mechanism is the same with disk cutter.Visible, along the ball tooth of cutter ring, be equivalent to a cutter ring topping, only after ball odontotripsis is very serious, cutter ring just can broken rock wearing and tearing further.So when disk cutter runs into the construction problem such as rapid wear, frequent tool changing, using insert cutter to carry out replacement is effective solution.Current insert cutter kind also fewer, the scope of application is also extensive, and a lot of parameters about insert cutter also lack to be studied targetedly, therefore needs constantly improve the type of insert cutter and enrich.
Summary of the invention
What the present invention proposed is a kind of twolip insert cutter and method for arranging thereof, its object is intended to solve when running into the like environment such as weathered sandstone in Urban Metro Construction, the problems such as large, each tool abrasion of shield structure hobboing cutter tool abrasion is uneven, for the feature that the Tool in Cutting path length of cutterhead zones of different is different, layout is optimized to cutter, the object reduce tool abrasion to reach, improving cutter operating efficiency.
Technical solution of the present invention: twolip insert cutter, it is characterized in that arranging ball tooth on the external diameter 17 cun i.e. cutter ring of the disk cutter of 432mm of routine, described cutter ring adopts flat sword formula, and the thickness t of cutter ring is not less than 30mm; Described ball tooth adopts hemispherical, and the external diameter of ball tooth in cutter ring plane is 30mm; For improving the efficiency of breaking rock of ball tooth, it is overstocked or excessively thin that ball tooth should not be arranged, the center to center distance 60mm of ball tooth; The clear distance of ball between cog is 30mm, and the height that ball tooth gives prominence to cutter ring is 15mm; In double-edged hobbing cutter, the spacing d of two cutters is 80mm-120mm; The cure process of cutter ring: build-up wear-resistant topping; Ball tooth adopts carbide alloy, and hardness controls at HRC52-55.
Its method for arranging, comprises the steps:
1) apart from balanced configuration 2 in cutter head center 1/3 radius hobboing cutter;
2) apart from cutter head center 1/3 radius with exterior domain, carry out cutters layout according to bifilar helix, each trajectory arranged much knives tool, as arranged two limit cuttves at the axis two ends of 0 ° or 180 °; Positive hobboing cutter layout is carried out according to the principle at equiphase angle in all the other positions; 90 ° and 270 ° of phase angles are respectively evenly arranged 3 hobboing cutters; 2 hobboing cutters are arranged at 45 °, 135 °, 225 °, 315 ° phase angles respectively, this 2 hobboing cutter be located at radial direction is positioned at 90 ° (270 °) upper arrange 3 1/2 place in the gap of hobboing cutter;
3) on 45 °, 135 °, 225 °, 315 ° phase angles of cutterhead, respectively arrange that 1 limit cutter;
Edge hob abrasion amount needs tool changing badly when about 20mm, and front hob abrasion amount needs tool changing badly when about 25mm.
Beneficial effect of the present invention:
1) compared with prior art improve anti-wear performance and reach about 50%, improve driving speed about 25%, and tool changing total cost is not significantly increased.
2) hobboing cutter arrangement, can make the cutter uniform force on cutterhead, wear and tear and reach unanimity, thus reduces number of changing knife, raising cutter operating efficiency further.
3) easy construction, cost are low, solve the problem that the cutter unbalance stress, the part hob abrasion that face when earth pressure balanced shield, EPBS is constructed in tunneling boring weathered sandstone etc. is compared with competent bed are serious, have saved cost, improve the efficiency of shield driving.
Accompanying drawing explanation
Fig. 1 is the top view of twolip insert cutter.
Fig. 2 is the lateral view of twolip insert cutter.
Fig. 3-1 is the hobboing cutter arrangement schematic diagram before improving.
Hobboing cutter arrangement schematic diagram after Fig. 3-2 improves.
Detailed description of the invention
Contrast Fig. 1,2, twolip insert cutter, its structure is that double-edged hobbing cutter external diameter adopts 17 cun of i.e. 432mm, and the cutter ring of disk cutter is provided with ball tooth, and described cutter ring adopts flat sword formula, and the thickness t of cutter ring is not less than 30mm; Described ball tooth adopts hemispherical, and the external diameter of ball tooth in cutter ring plane is 30mm; For improving the efficiency of breaking rock of ball tooth, it is overstocked or excessively thin that ball tooth should not be arranged, the center to center distance 60mm of ball tooth; The clear distance of ball between cog is 30mm, and the height that ball tooth gives prominence to cutter ring is 15mm; In double-edged hobbing cutter, the spacing d of two cutters is 80mm-120mm; The cure process of cutter ring: build-up wear-resistant topping; Ball tooth adopts carbide alloy, and hardness controls at HRC52-55.
The method for arranging of twolip insert cutter, comprises the steps:
1) apart from balanced configuration 2 in cutter head center 1/3 radius hobboing cutter;
2) apart from cutter head center 1/3 radius with exterior domain, carry out cutters layout according to bifilar helix, each trajectory arranged much knives tool, as arranged two limit cuttves at the axis two ends of 0 ° or 180 °; Positive hobboing cutter layout is carried out according to the principle at equiphase angle in all the other positions; 90 ° and 270 ° of phase angles are respectively evenly arranged 3 hobboing cutters; 2 hobboing cutters are arranged at 45 °, 135 °, 225 °, 315 ° phase angles respectively, this 2 hobboing cutter be located at radial direction is positioned at 90 ° (270 °) upper arrange 3 1/2 place in the gap of hobboing cutter;
3) on 45 °, 135 °, 225 °, 315 ° phase angles of cutterhead, respectively arrange that 1 limit cutter;
Edge hob abrasion amount needs tool changing badly when about 20mm, and front hob abrasion amount needs tool changing badly when about 25mm.
Claims (2)
1. twolip insert cutter, is characterized in that arranging ball tooth on the external diameter 17 cun i.e. cutter ring of the disk cutter of 432mm of routine; Described cutter ring adopts flat sword formula, and the thickness t of cutter ring is not less than 30mm; Described ball tooth adopts hemispherical, and the external diameter of ball tooth in cutter ring plane is 30mm; For improving the efficiency of breaking rock of ball tooth, it is overstocked or excessively thin that ball tooth should not be arranged, the center to center distance 60mm of ball tooth; The clear distance of ball between cog is 30mm, and the height that ball tooth gives prominence to cutter ring is 15mm; In double-edged hobbing cutter, the spacing d of two cutters is 80mm-120mm; The cure process of cutter ring: build-up wear-resistant topping; Ball tooth adopts carbide alloy, and hardness controls at HRC52-55.
2. the method for arranging of twolip insert cutter as claimed in claim 1, is characterized in that the method comprises the steps:
1) apart from balanced configuration 2 in cutter head center 1/3 radius hobboing cutter;
2) apart from cutter head center 1/3 radius with exterior domain, carry out cutters layout according to bifilar helix, each trajectory arranged much knives tool, as arranged two limit cuttves at the axis two ends of 0 ° or 180 °; Positive hobboing cutter layout is carried out according to the principle at equiphase angle in all the other positions; 90 ° and 270 ° of phase angles are respectively evenly arranged 3 hobboing cutters; 2 hobboing cutters are arranged at 45 °, 135 °, 225 °, 315 ° phase angles respectively, this 2 hobboing cutter be located at radial direction is positioned at 90 ° (270 °) upper arrange 3 1/2 place in the gap of hobboing cutter;
3) on 45 °, 135 °, 225 °, 315 ° phase angles of cutterhead, respectively arrange that 1 limit cutter;
Edge hob abrasion amount needs tool changing badly when about 20mm, and front hob abrasion amount needs tool changing badly when about 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339520.5A CN104234720B (en) | 2014-07-17 | 2014-07-17 | Twolip insert cutter and method for arranging thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410339520.5A CN104234720B (en) | 2014-07-17 | 2014-07-17 | Twolip insert cutter and method for arranging thereof |
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| CN104234720A true CN104234720A (en) | 2014-12-24 |
| CN104234720B CN104234720B (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281682A (en) * | 2018-09-27 | 2019-01-29 | 上海盾构设计试验研究中心有限公司 | A kind of Roller Tool for micro- decomposed rock tunnel rectangular shield push-bench |
| CN110259471A (en) * | 2019-07-23 | 2019-09-20 | 中交第三航务工程局有限公司 | Excavate to a kind of all standing the hobboing cutter cutter ring of ultra-clean hard rock shield machine |
Citations (13)
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|---|---|---|---|---|
| JPH08199982A (en) * | 1995-01-26 | 1996-08-06 | Kido Kensetsu Kogyo Kk | Excavating method of rock and shield machine of rock |
| JP2004278030A (en) * | 2003-03-13 | 2004-10-07 | Kawasaki Heavy Ind Ltd | Cutter replacing device and tunnel boring machine equipped with the same |
| CN201560768U (en) * | 2009-04-24 | 2010-08-25 | 中铁二局股份有限公司 | Cutter of earth pressure balance shield machine |
| CN201620893U (en) * | 2009-04-24 | 2010-11-03 | 中铁二局股份有限公司 | Double-blade hob |
| CN101899981A (en) * | 2010-08-10 | 2010-12-01 | 广州市盾建地下工程有限公司 | Method for reducing abnormal damage of hob in tunnel excavating process of shield machine |
| CN201924939U (en) * | 2010-12-02 | 2011-08-10 | 广东华隧建设股份有限公司 | Novel hobbing cutter of shield machine |
| CN202266270U (en) * | 2011-10-09 | 2012-06-06 | 盾建重工制造有限公司 | Double-edged hob device for semi-cylindrical hexagonal end cover of shield machine |
| CN202266268U (en) * | 2011-09-13 | 2012-06-06 | 盾建重工制造有限公司 | Double-edged hob arranged on cylindrical cutter box |
| CN202467848U (en) * | 2011-12-27 | 2012-10-03 | 洛阳九久技术开发有限公司 | Disk-shaped heavy hob for hard rock tunneling machine |
| CN202531177U (en) * | 2011-12-16 | 2012-11-14 | 盾建重工制造有限公司 | Cutter head structure of hard rock shield machine, used for mounting fixed hob with square bearing seats |
| CN103527207A (en) * | 2013-07-20 | 2014-01-22 | 山东天工岩土工程设备有限公司 | Cemented carbide welded hob ring |
| CN203488184U (en) * | 2013-09-04 | 2014-03-19 | 洛阳九久技术开发有限公司 | Integral double-edge ball tooth cutter ring |
| CN204082155U (en) * | 2014-07-17 | 2015-01-07 | 中铁三局集团有限公司 | A kind of novel twolip insert cutter |
-
2014
- 2014-07-17 CN CN201410339520.5A patent/CN104234720B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08199982A (en) * | 1995-01-26 | 1996-08-06 | Kido Kensetsu Kogyo Kk | Excavating method of rock and shield machine of rock |
| JP2004278030A (en) * | 2003-03-13 | 2004-10-07 | Kawasaki Heavy Ind Ltd | Cutter replacing device and tunnel boring machine equipped with the same |
| CN201560768U (en) * | 2009-04-24 | 2010-08-25 | 中铁二局股份有限公司 | Cutter of earth pressure balance shield machine |
| CN201620893U (en) * | 2009-04-24 | 2010-11-03 | 中铁二局股份有限公司 | Double-blade hob |
| CN101899981A (en) * | 2010-08-10 | 2010-12-01 | 广州市盾建地下工程有限公司 | Method for reducing abnormal damage of hob in tunnel excavating process of shield machine |
| CN201924939U (en) * | 2010-12-02 | 2011-08-10 | 广东华隧建设股份有限公司 | Novel hobbing cutter of shield machine |
| CN202266268U (en) * | 2011-09-13 | 2012-06-06 | 盾建重工制造有限公司 | Double-edged hob arranged on cylindrical cutter box |
| CN202266270U (en) * | 2011-10-09 | 2012-06-06 | 盾建重工制造有限公司 | Double-edged hob device for semi-cylindrical hexagonal end cover of shield machine |
| CN202531177U (en) * | 2011-12-16 | 2012-11-14 | 盾建重工制造有限公司 | Cutter head structure of hard rock shield machine, used for mounting fixed hob with square bearing seats |
| CN202467848U (en) * | 2011-12-27 | 2012-10-03 | 洛阳九久技术开发有限公司 | Disk-shaped heavy hob for hard rock tunneling machine |
| CN103527207A (en) * | 2013-07-20 | 2014-01-22 | 山东天工岩土工程设备有限公司 | Cemented carbide welded hob ring |
| CN203488184U (en) * | 2013-09-04 | 2014-03-19 | 洛阳九久技术开发有限公司 | Integral double-edge ball tooth cutter ring |
| CN204082155U (en) * | 2014-07-17 | 2015-01-07 | 中铁三局集团有限公司 | A kind of novel twolip insert cutter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109281682A (en) * | 2018-09-27 | 2019-01-29 | 上海盾构设计试验研究中心有限公司 | A kind of Roller Tool for micro- decomposed rock tunnel rectangular shield push-bench |
| CN110259471A (en) * | 2019-07-23 | 2019-09-20 | 中交第三航务工程局有限公司 | Excavate to a kind of all standing the hobboing cutter cutter ring of ultra-clean hard rock shield machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104234720B (en) | 2016-04-06 |
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Application publication date: 20141224 Assignee: CUMT Geotechnical Engineering & New Technology Development Co.,Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000246 Denomination of invention: Double-edged spherical-tooth hob and arranging method thereof Granted publication date: 20160406 License type: Common License Record date: 20181026 Application publication date: 20141224 Assignee: Jiangsu Rong Rui Construction Technology Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000247 Denomination of invention: Double-edged spherical-tooth hob and arranging method thereof Granted publication date: 20160406 License type: Common License Record date: 20181026 Application publication date: 20141224 Assignee: Jiangsu Construction Engineering Consulting Co., Ltd. Assignor: Nanjing Forestry University Contract record no.: 2018320000245 Denomination of invention: Double-edged spherical-tooth hob and arranging method thereof Granted publication date: 20160406 License type: Common License Record date: 20181026 |
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Effective date of registration: 20220110 Address after: 214263 Zhou tie Zhen Xia Jia Jie, Yixing City, Wuxi City, Jiangsu Province Patentee after: Jianji group underground space river lake regulation R & D Center Co.,Ltd. Address before: Nanjing City, Jiangsu province 210037 Longpan Road No. 159 Patentee before: NANJING FORESTRY University Patentee before: Zhong iron three Bureau Group Co., Ltd. |
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