CN105736008A - Configuration method of cutterhead tools of multi-balance comprehensive pipe jacking machine in water sand-rich and gravel-rich stratum - Google Patents
Configuration method of cutterhead tools of multi-balance comprehensive pipe jacking machine in water sand-rich and gravel-rich stratum Download PDFInfo
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- CN105736008A CN105736008A CN201610075215.9A CN201610075215A CN105736008A CN 105736008 A CN105736008 A CN 105736008A CN 201610075215 A CN201610075215 A CN 201610075215A CN 105736008 A CN105736008 A CN 105736008A
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- cutter
- cutterhead
- cutting
- soil body
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
Abstract
The invention provides a configuration method of cutterhead tools of a multi-balance comprehensive pipe jacking machine in a water sand-rich and gravel-rich stratum. A cutterhead body, a main center plate and an auxiliary center plate are made of Q345 steel with the dimension being 60 mm, and surfacing is conducted on the surface, making contact with the stratum, of a cutterhead by means of netty hard alloy, so that abrasion generated during jacking of a sand and gravel soil layer is resisted; the cutterhead torque in the jacking process is reduced by adopting the spoke type cutterhead, and the defect that a spoke type panel is unfavorable to the stability of an excavation face is overcome; and the cutting and stirring effects of the central portion of a soil body are improved through a central cutter. According to the design and configuration way of the central cutter, firstly, the pipe jacking machine is made to cut the soil body by two steps, the central portion, with a small circular section, of the soil body is cut by means of the central cutter firstly, and then the soil body with the whole section is cut through expansion; and secondly, the root portion of the central cutter is designed to be conical. The configuration method of the cutterhead tools of the multi-balance comprehensive pipe jacking machine in the water sand-rich and gravel-rich stratum has the advantages that the cutterhead torque in the jacking process is reduced by adopting the spoke type cutterhead, vibration of the pipe jacking machine in the breaking process is small, the gauge protection tool, middle and edge scrapers and an auxiliary spoke leading tool are replaceable, and using is convenient.
Description
Technical field
The present invention relates to underground engineering push pipe class construction technology field, particularly to the collocation method of rich water sand, the comprehensive push-bench knife disc tool of the many balances in ovum stratum.
Background technology
The demand of underground utilities is increasing year by year, and the pipe-jacking technology that strengthens of environmental protection consciousness will be played increasingly consequence and effect by people in the construction of underground utilities in addition.The development of pipe-jacking technology will develop to scale, standardization, international direction.
Cutterhead, cutter are the main working parts of push-bench, and different geo-logical terrains should select different cutterhead, tooling setup, cutterhead, the driving speed of good bad influence push pipe of tooling setup and benefit, even directly affect the success or failure of jacking construction.
Summary of the invention
The invention aims to solve sand, pebble layer jacking construction overcomes difficult point, spy to provide the collocation method of rich water sand, the comprehensive push-bench knife disc tool of the many balances in ovum stratum.
The invention provides the collocation method of rich water sand, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: described rich water sand, the collocation method of the comprehensive push-bench knife disc tool of the many balances in ovum stratum, cutter head and main former, secondary former employing 60mm, Q345 steel, cutterhead and the formation-engaging surfaces netted hard alloy overlay welding of employing tackle abrasion during sand ovum soil layer jacking.Adopting spoke wheel to reduce cutter head torque in jack-in process, aperture opening ratio is set as 36%, make up employing spoke type panel excavation face is stablized unfavorable；
Cutting and the mixing effect of the centre soil body is improved by central cutting cutter, the advanced 250mm of central cutting cutter, 1；
Design and the configuration mode of central cutting cutter are as follows:
One, allow push-bench cut the soil body in two steps, utilize the little circle cross section soil body in central cutting cutter elder generation's turning centre position, then expand the tunneling boring cutting soil body to；
It is two, that central cutting cutter root is designed to taper, the soil body cut with center cutter when making cutterhead rotate, on the basis of tangential, radial motion, increase again a flip-flop movement, so both can solve the problem of cutting of the core soil body and improve mobility and the mixing effect of the cutting soil body, being greatly improved again push-bench entirety tunneling effect.
Being ensured tunnel excavation diameter by replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter, replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter gauge cutter be 45 ° is evenly arranged in the outer wall of cutterhead circumferential opening, layout 8 altogether, the two each 4；Gauge cutter has cooperation week edge doctor, the effect of protection tunnel diameter.4 claw type gauge knife ups go out former 110mm, and 4 shell type gauge knife ups go out former 80mm and arrange.
It is arranged in the both sides of cutterhead open slot by edge blade, replaceable middle edge scraper, face-side doctor blade, arranges 64 altogether；Wherein, edge blade be 8, replaceable middle edge scraper be 16, face-side doctor blade be 40；Its cutting principle is while push-bench is pushed ahead, and scraper rotates with cutterhead and the excavation face soil body produces axial shearing force and radial cutting force；It is axially along tunnel direction of advance, is radially cutterhead rolling tangential direction；
Under the rotation of cutterhead, blade and tool bit part are inserted into inside stratum, are constantly got off by excavation face front soil cutting；8 edge blade, 40 face-side doctor blade exceed former 50mm, and 16 replaceable middle edge scrapers exceed former 80mm.
The fixing dual-pilot cutter of replaceable Cornu Caprae seu Ovis dual-pilot cutter, replaceable shell dual-pilot cutter, claw type is the cutter cutting the soil body in advance, and advanced cutting knife is arranged.Dual-pilot cutter mainly considers and other knife combination collaborative work in the design.Dual-pilot cutter cut the soil body in advance before scraper cuts the soil body, by soil body cutting whole into sections, created good machining condition for scraper.The cutting width of dual-pilot cutter is generally narrow than scraper, and stock-removing efficiency is higher.Adopt dual-pilot cutter, the mobility of the cutting soil body can be dramatically increased, be substantially reduced the moment of torsion of scraper, improve the stock-removing efficiency of scraper, reduce the abrasion of scraper.On loose media stratum, especially the result of use of sand-pebble layer dual-pilot cutter is fairly obvious.Dual-pilot cutter is arranged on cutterhead former, arrange 48 (the fixed dual-pilot cutter of Cornu Caprae seu Ovis 12, Cornu Caprae seu Ovis replaceable pilot cutter 16, shell changeable type dual-pilot cutter 20) altogether, claw type dual-pilot cutter exceeds panel 110mm, and shell type dual-pilot cutter exceeds panel 80mm.
Secondary crushing device selects unique circular cutout breaker as second-time breakage, can not only very effective crush, and because gravel is crushed by the cracking cabin of head body, therefore in shattering process, push-bench should not cause fuselage to rotate, vibrating little time broken, to controlling, push pipe attitude is highly beneficial.
According to past construction experiences, diameter reaches 10% more than 30cm cobble content, and the soil body is subject to disturbance in various degree, and push-bench must adopt secondary crushing device, reaches the particle diameter that can carry against primary fragmentation, is greatly shortened cutter life, is unfavorable for saving the duration.Intend adopting push-bench to select the scraper of advanced person, dual-pilot cutter, gauge cutter, the cutting that can realize front sand comes off, i.e. primary fragmentation function, becomes two broken receptible degree by primary fragmentation by gravel breakup, then gravel breakup is become by second-time breakage the particle diameter that can be transferred.
Advantages of the present invention:
Rich water sand of the present invention, the comprehensive push-bench knife disc tool of the many balances in ovum stratum collocation method, cutter head adopts 60mmQ345 steel, abrasion when cutterhead and formation-engaging surfaces adopt netted hard alloy overlay welding to tackle distance sand ovum soil layer jacking；The front of cutter and side all adopt superhard alloy PR30, and in order to improve its anti-fractureing property, mix rare metal cobalt.Adopting spoke wheel to reduce cutter head torque in jack-in process, aperture opening ratio is set as 36%, make up employing spoke type panel excavation face is stablized unfavorable.Cutter adopts diversification distribution to put, and has central cutting cutter, gauge cutter, scraper, dual-pilot cutter, Fructus Ananadis comosi nail and pineapple knife, super cutter.Cutter divides four layers of layout, and central cutting cutter exposes 250mm, and the every floor height difference of panel three layers cutter is 30mm.Select unique circular cutout breaker as second-time breakage, can not only very effective crush, and because gravel is crushed by the cracking cabin of head body, therefore in shattering process, push-bench should not cause fuselage to rotate, vibrating little time broken, to controlling, push pipe attitude is highly beneficial.Gauge cutter, middle edge scraper, secondary spoke dual-pilot cutter are changeable type, easy to use.
Accompanying drawing explanation
Below in conjunction with drawings and the embodiments, the present invention is further detailed explanation:
Fig. 1 is cutterhead, cutter elevation；
Fig. 2 is cutterhead, cutter profilograph；
Fig. 3 is various cutter traverse section layout drawings；
Fig. 4 is second-time breakage system cross section layout drawing；
In figure, 1 is main former, and 2 is time former, cutting edge centered by 3,4 is replaceable Cornu Caprae seu Ovis gauge cutter, 5 is replaceable shell gauge cutter, and 6 is edge blade, and 7 is replaceable middle edge scraper, 8 is face-side doctor blade, 9 is replaceable shell dual-pilot cutter, and 10 is the fixing dual-pilot cutter of claw type, and 11 is secondary crushing device.
Detailed description of the invention
Embodiment 1
Present embodiments provide the collocation method of rich water sand, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: described rich water sand, the collocation method of the comprehensive push-bench knife disc tool of the many balances in ovum stratum, cutter head and main former, secondary former employing 60mm, Q345 steel, cutterhead and the formation-engaging surfaces netted hard alloy overlay welding of employing tackle abrasion during sand ovum soil layer jacking.Adopting spoke wheel to reduce cutter head torque in jack-in process, aperture opening ratio is set as 36%, make up employing spoke type panel excavation face is stablized unfavorable；
Cutting and the mixing effect of the centre soil body is improved by central cutting cutter, the advanced 250mm of central cutting cutter, 1；
Design and the configuration mode of central cutting cutter are as follows:
One, allow push-bench cut the soil body in two steps, utilize the little circle cross section soil body in central cutting cutter elder generation's turning centre position, then expand the tunneling boring cutting soil body to；
It is two, that central cutting cutter root is designed to taper, the soil body cut with center cutter when making cutterhead rotate, on the basis of tangential, radial motion, increase again a flip-flop movement, so both can solve the problem of cutting of the core soil body and improve mobility and the mixing effect of the cutting soil body, being greatly improved again push-bench entirety tunneling effect.
Being ensured tunnel excavation diameter by replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter, replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter gauge cutter be 45 ° is evenly arranged in the outer wall of cutterhead circumferential opening, layout 8 altogether, the two each 4；Gauge cutter has cooperation week edge doctor, the effect of protection tunnel diameter.4 claw type gauge knife ups go out former 110mm, and 4 shell type gauge knife ups go out former 80mm and arrange.
It is arranged in the both sides of cutterhead open slot by edge blade, replaceable middle edge scraper, face-side doctor blade, arranges 64 altogether；Wherein, edge blade be 8, replaceable middle edge scraper be 16, face-side doctor blade be 40；Its cutting principle is while push-bench is pushed ahead, and scraper rotates with cutterhead and the excavation face soil body produces axial shearing force and radial cutting force；It is axially along tunnel direction of advance, is radially cutterhead rolling tangential direction；
Under the rotation of cutterhead, blade and tool bit part are inserted into inside stratum, are constantly got off by excavation face front soil cutting；8 edge blade, 40 face-side doctor blade exceed former 50mm, and 16 replaceable middle edge scrapers exceed former 80mm.
The fixing dual-pilot cutter of replaceable Cornu Caprae seu Ovis dual-pilot cutter, replaceable shell dual-pilot cutter, claw type is the cutter cutting the soil body in advance, and advanced cutting knife is arranged.Dual-pilot cutter mainly considers and other knife combination collaborative work in the design.Dual-pilot cutter cut the soil body in advance before scraper cuts the soil body, by soil body cutting whole into sections, created good machining condition for scraper.The cutting width of dual-pilot cutter is generally narrow than scraper, and stock-removing efficiency is higher.Adopt dual-pilot cutter, the mobility of the cutting soil body can be dramatically increased, be substantially reduced the moment of torsion of scraper, improve the stock-removing efficiency of scraper, reduce the abrasion of scraper.On loose media stratum, especially the result of use of sand-pebble layer dual-pilot cutter is fairly obvious.Dual-pilot cutter is arranged on cutterhead former, arrange 48 (the fixed dual-pilot cutter of Cornu Caprae seu Ovis 12, Cornu Caprae seu Ovis replaceable pilot cutter 16, shell changeable type dual-pilot cutter 20) altogether, claw type dual-pilot cutter exceeds panel 110mm, and shell type dual-pilot cutter exceeds panel 80mm.
Secondary crushing device selects unique circular cutout breaker as second-time breakage, can not only very effective crush, and because gravel is crushed by the cracking cabin of head body, therefore in shattering process, push-bench should not cause fuselage to rotate, vibrating little time broken, to controlling, push pipe attitude is highly beneficial.
According to past construction experiences, diameter reaches 10% more than 30cm cobble content, and the soil body is subject to disturbance in various degree, and push-bench must adopt secondary crushing device, reaches the particle diameter that can carry against primary fragmentation, is greatly shortened cutter life, is unfavorable for saving the duration.Intend adopting push-bench to select the scraper of advanced person, dual-pilot cutter, gauge cutter, the cutting that can realize front sand comes off, i.e. primary fragmentation function, becomes two broken receptible degree by primary fragmentation by gravel breakup, then gravel breakup is become by second-time breakage the particle diameter that can be transferred.
Claims (5)
1. the collocation method of rich water sand, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: described rich water sand, the collocation method of the comprehensive push-bench knife disc tool of the many balances in ovum stratum, cutter head and main former, secondary former employing 60mm, Q345 steel, cutterhead and the formation-engaging surfaces netted hard alloy overlay welding of employing tackle abrasion during sand ovum soil layer jacking；Adopting spoke wheel to reduce cutter head torque in jack-in process, aperture opening ratio is set as 36%, make up employing spoke type panel excavation face is stablized unfavorable；
Cutting and the mixing effect of the centre soil body is improved by central cutting cutter, the advanced 250mm of central cutting cutter, 1；
Design and the configuration mode of central cutting cutter are as follows:
One, allow push-bench cut the soil body in two steps, utilize the little circle cross section soil body in central cutting cutter elder generation's turning centre position, then expand the tunneling boring cutting soil body to；
It is two, that central cutting cutter root is designed to taper, the soil body cut with center cutter when making cutterhead rotate, on the basis of tangential, radial motion, increase again a flip-flop movement, both solved the problem of cutting of the core soil body and improved mobility and the mixing effect of the cutting soil body, being greatly improved again push-bench entirety tunneling effect.
2. the collocation method of rich water sand described in claim 1, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: ensured tunnel excavation diameter by replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter, replaceable Cornu Caprae seu Ovis gauge cutter, replaceable shell gauge cutter gauge cutter is 45 ° is evenly arranged in the outer wall of cutterhead circumferential opening, arrange 8 altogether, the two each 4；4 claw type gauge knife ups go out former 110mm, and 4 shell type gauge knife ups go out former 80mm and arrange.
3. the collocation method of rich water sand described in claim 1, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterised in that: it is arranged in the both sides of cutterhead open slot by edge blade, replaceable middle edge scraper, face-side doctor blade, arranges 64 altogether；Wherein, edge blade be 8, replaceable middle edge scraper be 16, face-side doctor blade be 40；Its cutting principle is while push-bench is pushed ahead, and scraper rotates with cutterhead and the excavation face soil body produces axial shearing force and radial cutting force；It is axially along tunnel direction of advance, is radially cutterhead rolling tangential direction；
Under the rotation of cutterhead, blade and tool bit part are inserted into inside stratum, are constantly got off by excavation face front soil cutting；8 edge blade, 40 face-side doctor blade exceed former 50mm, and 16 replaceable middle edge scrapers exceed former 80mm.
4. the collocation method of rich water sand described in claim 1, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: the fixing dual-pilot cutter of replaceable Cornu Caprae seu Ovis dual-pilot cutter, replaceable shell dual-pilot cutter, claw type is the cutter cutting the soil body in advance, and advanced cutting knife is arranged；Dual-pilot cutter mainly considers and other knife combination collaborative work in the design；Dual-pilot cutter cut the soil body in advance before scraper cuts the soil body, by soil body cutting whole into sections, created good machining condition for scraper；The cutting width of dual-pilot cutter is narrower than scraper, and stock-removing efficiency is higher；Adopt dual-pilot cutter, increase the mobility of the cutting soil body, be substantially reduced the moment of torsion of scraper, improve the stock-removing efficiency of scraper, reduce the abrasion of scraper；Dual-pilot cutter is arranged on cutterhead former, arranges 48 altogether, and the fixed dual-pilot cutter of Cornu Caprae seu Ovis 12, Cornu Caprae seu Ovis replaceable pilot cutter 16, shell changeable type dual-pilot cutter 20, claw type dual-pilot cutter exceeds panel 110mm, and shell type dual-pilot cutter exceeds panel 80mm.
5. the collocation method of rich water sand described in claim 1, the comprehensive push-bench knife disc tool of the many balances in ovum stratum, it is characterized in that: secondary crushing device selects unique circular cutout breaker as second-time breakage, can not only very effective crush, and because gravel is crushed by the cracking cabin of head body, therefore push-bench does not cause fuselage to rotate in shattering process, vibrating little time broken, to controlling, push pipe attitude is favourable.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075215.9A CN105736008A (en) | 2016-02-01 | 2016-02-01 | Configuration method of cutterhead tools of multi-balance comprehensive pipe jacking machine in water sand-rich and gravel-rich stratum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610075215.9A CN105736008A (en) | 2016-02-01 | 2016-02-01 | Configuration method of cutterhead tools of multi-balance comprehensive pipe jacking machine in water sand-rich and gravel-rich stratum |
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| CN105736008A true CN105736008A (en) | 2016-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108388689A (en) * | 2018-01-16 | 2018-08-10 | 天津大学 | A kind of Cutter Head Torque in Shield Tunneling computational methods based on dimensional analysis |
| CN108716408A (en) * | 2018-08-07 | 2018-10-30 | 安徽唐兴机械装备有限公司 | A kind of dense mud formula rock push-bench of the replaceable cutterhead of pebble layer |
| CN109184723A (en) * | 2018-08-10 | 2019-01-11 | 淮南中泰矿山装备制造有限公司 | Pipe jacking tunnelling machine high intensity cutterhead |
| CN109209406A (en) * | 2018-10-18 | 2019-01-15 | 上海隧道工程有限公司 | Promote the shield cutter configuration structure and method of the dregs flowing space |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109209406A (en) * | 2018-10-18 | 2019-01-15 | 上海隧道工程有限公司 | Promote the shield cutter configuration structure and method of the dregs flowing space |
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Application publication date: 20160706 |