CN104088647B - Shield tube push bench with super-large rectangular cross section - Google Patents
Shield tube push bench with super-large rectangular cross section Download PDFInfo
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- CN104088647B CN104088647B CN201410247831.9A CN201410247831A CN104088647B CN 104088647 B CN104088647 B CN 104088647B CN 201410247831 A CN201410247831 A CN 201410247831A CN 104088647 B CN104088647 B CN 104088647B
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Abstract
The invention relates to a shield tube push bench with a super-large rectangular cross section. The tube push bench comprises a cutterhead device, a driving system, a shield structure, a screw conveyer and a back up system, wherein the section of the shield structure is rectangular, and the upper part of the shield structure is in the shape of an arch camber; the shield structure comprises a front shield, error correcting cylinders, a tail shield, adjustable hinged seals and an appearing cylinder; the front shield supporting and driving system is characterized in that the front shield is connected with the tail shield through at least two sets of error correcting cylinders, and the appearing cylinder is arranged at the rear end of the tail shield. In order to further improve the structure of the push bench, the cutterhead device is a combined cutterhead, and can ensure that the earth pressure of the front shield and a tunnelling surface is balanced, and disturbance to an earth layer is small; the driving system is an independent drive system, and a torque can be regulated in a real time manner according to a geological condition. Therefore, the push bench is high in construction efficiency, and small in disturbance to a bottom layer, the ground surface settlement is decreased, the construction reliability is improved, the deslagging efficiency is improved, and the assembling, disassembling, operation and control of the whole tube push bench is convenient and safe; the construction cost of the tube push bench is low, and the tube push bench is economical and practical.
Description
Technical field
The invention belongs to constructing tunnel equipment technical field, particularly relate to a kind of shield structure pipe jacking equipment.
Background technology
Shield technique need not be removed in a large number, need not excavate ground, noiselessness on ground, without dust, does not disturb residents, and all adopting Automated condtrol, programming is very fast, therefore, be that one can reduce engineering pollution, significantly can save again the construction technology of construction investment.Wherein, push-bench be a kind of adopt shield method integrate the high mechanization of technology and the excavation lining cutting a complete set of equipment of automation such as machinery, electronics, hydraulic pressure, laser and control.
In main road, Xia Chuan Central Region, Zhengzhou motorway construction of tunnel, its job location is positioned at flood plain district, the Yellow River, there is road on earth's surface, it is Quaternary system alluvial deposit under bedding, lithology is based on sallow, lurid silt, silty clay, flour sand, thickness is large, and buried depth of bedrock is planning to build about 1300m near place.This area's stratum rock signature is: in district, stratum belongs to North China Stratigraphic district, disclose according to borehole data, Cenozoic's base plate deepens in south orientation northeast westerly gradually, and deposit thickness increases, and Cenozoic was made up of Neogene system Guantao group, Ming Hua town group and Quaternary system Pleistocene, the Recent Epoch.
This project is the boring construction project of the domestic rectangular cross section of super large first 10.12m × 7.27m, does not have similar Project case can reference; Excavated section is large, and the state that development end is subject to thrust uneven not easily regulates; Earthing is very shallow, and the maximum buried depth in tunnel is 4.2 meters, causes ground settlement wayward; Be 2 motorways in the middle of this project, both sides are parallel excavates two nonmotorized vehicle lanes, and excavation face horizontal clear spacing in each track is 0.5 meter, causes push pipe driving axis precision controlling very difficult.
Summary of the invention
In order to solve the problem, the present invention openly can excavate super large rectangular cross section, produces ground settlement less, regulates moment of torsion in real time according to geological condition, can accurate tuning, a kind of super large rectangular cross section shield structure push-bench of integral disassembly, assembly convenient operation and control safety.
The present invention adopts following technical scheme: a kind of super large rectangular cross section shield structure push-bench, comprise the cutter head, the drive system adjacent to cutter head rear portion, the shield structure supporting whole equipment, the conveying worm that cutter head rear portion is set and the Rear impact that are arranged on front end, it is characterized in that: the cross section of described shield structure is rectangle, top arch camber; Shield structure comprises anterior shield, correction oil cylinder, tail shield, adjustable hinged sealing and oil cylinder of appearing; Anterior shield support drive system, at least two group correction oil cylinders connect anterior shield and tail shield, and oil cylinder of appearing is arranged at tail shield rear end; Wherein, anterior shield is divided into anterior shield top and anterior shield bottom, and tail shield is divided into tail shield top and tail shield bottom.
The tool head that described cutter head is made up of six little cutterheads of spoke type, the driving shaft of six little cutterheads of spoke type is parallel mutually; The little cutterhead of each spoke type comprises five operator beams, is arranged on the center fish tail cutter at center, and the front of tool head is provided with cutting knife or cutter of backbreaking.
Described tool head comprises the little cutterhead of anterior little cutterhead and rear portion, three the little cutterheads forming anterior little cutterhead are in the distribution of falling isosceles triangle and on front same plane, three little cutterheads of composition rear portion little cutterhead be that positive isosceles triangle distributes and on rear same plane, this distribution mode decreases excavation blind area, and well can ensure the earth pressure balance effect of development end and anterior shield.
Described drive system is independent driving system, comprises six groups of independent driving devices, adopts spline joint respectively with six little cutterheads of spoke type, often organizes drive unit center of rotation and is designed with swivel coupling.
Described adjustable hinged sealing comprises two seals, and the front steamed bun type that is sealed into together seals, and is sealed into two lip-type seal afterwards together, can improves its sealing effectiveness and application life, decrease cost of equipment maintenance.
Described anterior shield front end ring cross section is tapered, and after anterior shield, end ring cross section is box-structure, anterior shield front end edge ring week relevant position be welded with shield body wear-resisting cutter, anterior shield rear end outer shroud box-type section and inner ring cross section, tail shield front end adopt adjustable to be hingedly tightly connected.
The arch position of described anterior shield is welded with brim structure, and brim structure and anterior shield arch up between position and be reserved with the flowing space that one way valve injects thixotropic slurry, and the brim of a hat rear end section gap is welded with gap backing plate, is convenient to thixotropic slurry dispersed.
Described anterior shield top and anterior shield bottom adopt flange to be fixedly connected with, and the flank of flange is with frange plate along girth; After anterior shield end ring cross section upper and lower between be fixedly connected with support bar, add shield advance operation time Rigidity and strength, improve the degree of accuracy of deviation-correcting function; The top of described anterior shield top and/or tail shield is provided with concealed hanger, during lifting, hanger and anterior shield hinged, earhole can connect suspender; When anterior shield promotion, this hanger folded concealed in outer shroud cross section, and blocks earhole with bolt, is convenient to anterior shield or the transport of tail shield and lifts.
Described conveying worm is two shaft type conveyers that can realize earth pressure balance boring mode, and deslagging efficiency is high, is beneficial to the effect of earth pressure balance.
A kind of super large rectangular cross section shield structure push-bench provided by the invention, efficiency of construction is high, and adopt earth pressure balance principle to tunnel, formation disturbance is little; The earth pressure balance effect of face and anterior shield can be regulated when excavating rectangular cross section very well, effectively reducing ground settlement, have smooth deslagging ability; Original sediment improvement is become to have the dregs of sealing, plasticity, mobility, be convenient to use conveying worm highly effective slag draining, improve deslagging ability; And low, convenient operation and control safety is required to corollary equipment, equipment manufacturing cost is cheap, economical and practical.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of cutter head of the present invention.
Fig. 3 is the structural representation of rectangle rectangle shield of the present invention.
Fig. 4 is the structural representation of the adjustable hinged sealing of rectangle shield of the present invention.
Fig. 5 is the anterior shield brim structure schematic diagram of rectangle shield of the present invention.
Fig. 6 is the structural representation of the concealed hanger of rectangle shield of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of super large rectangular cross section shield structure push-bench of the present invention, comprising: cutter head 1, independent driving system 2, the rectangle shield 3 supporting whole equipment, conveying worm 4 and Rear impact 5.
As shown in Figure 2, cutter head 1 is tool head, be made up of six little cutterheads of spoke type, three little cutterheads of spoke type of its middle front part pocket knife dish 101 are distributed on front same plane in falling isosceles triangle, three little cutterheads of spoke type of the little cutterhead in rear portion 102 are that positive isosceles triangle is distributed on rear same plane, thus make the mutual juxtaposition distribution of the area of cut.The little cutter head structure of each spoke type forms primarily of five operator beams, the center fish tail cutter 104 that is arranged on center, and the front of tool head is provided with cutting knife 105.There are several initiatively stirring rod 103 at the rear portion of the little cutterhead of each spoke type, and the anterior little cutterhead more than 101 of the number ratio of the active stirring rod 103 of rear portion little cutterhead 102 installation, this structure makes stirring region maximize, and is beneficial to the smoothness of dregs conveying, is convenient to control ground settlement.In addition, independent driving system 2 comprises six groups of independent driving devices, after the little cutterhead of each spoke type, spline joint has one group of independent driving device, this setting can realize the operation of single drive unit rotating excavation, also the operation of six groups of drive unit interlock excavations can be realized, simultaneously be designed with swivel coupling often organizing drive unit center of rotation, sediment improvement foam used, swell soil, water are all injected in native storehouse by swivel coupling.
As Fig. 3,4, shown in 5 and 6, rectangle shield 3 of the present invention is the agent structure of whole equipment, and cross section is rectangle, top arch camber, i.e. the left side, the right side and be straight line is below arc above.Rectangle shield 3 comprises anterior shield, correction oil cylinder 310, tail shield, native storehouse 313, adjustable hinged sealing 308 and oil cylinder 309 of appearing.Anterior shield is divided into anterior shield top 301 and anterior shield bottom 302, and tail shield is divided into tail shield top 306 and tail shield bottom 312.At least hinged by two groups of oil cylinders 310 of rectifying a deviation between anterior shield and tail shield, and utilize adjustable hinged sealing 308 to prevent from oozing in the water of the soil body or slurries.Inside tail shield top 306, be provided with oil cylinder 309 of appearing, can make the tail shield of main frame enter accept well after realize initiatively being separated with rectangle tube coupling, make construction more safe and reliable.Adjustable hinged sealing 308 comprises two seals, before be sealed into together steamed bun type sealing 3081, be sealed into two lip-type seal 3082 afterwards together, two kinds of sealings are all close to the smooth surface of anterior shield rear end 3015, base support section is tail shield front end 3061, the sealing function that double-lip seal 3082 is main under normal circumstances, especially under maximum deviation adjustment angle, lip still can compress casing, prevent from oozing in slurries, when after double-lip seal 3082 long-term work wear out failure, by adjusting device 3083, compress briquetting, steamed bun is regulated to seal the height of 3081, extend the application life of sealing.The ring cross section of anterior shield front end is tapered, and this part anterior shield top 301 and anterior shield bottom 302 adopt reinforced flange 303 to be fixedly connected with, and this flange flank is welded with frange plate formation class i-beam structure; Ring cross section, anterior shield rear end 3015 is box-structure, adopts embedded flange 304 when this part connects anterior shield top 301 and anterior shield bottom 302.Consider that the square-section of shield structure is horizontal, adopt brace summer 305 to ensure whole anterior shield rigidity.The arranged outside on anterior shield top 301 has brim structure 307, and its brim of a hat 3012 welds with anterior shield front end 3011, and is reserved with the flowing space that slip casting one way valve 3014 injects thixotropic slurry; The brim of a hat rear end is welded with gap backing plate 3013 section gap, namely leaves gap, many places, is convenient to thixotropic slurry and flows backward and dispersed in pushing tow process, can be used to protect the one way valve 3014 injecting thixotropic slurry simultaneously, and improves lubricant effect.Anterior shield top 301 or tail shield 306 are provided with several concealed hanger 311, and are reserved with dead slot; Concealed hanger 311 is provided with bolt 3113, chock 3112, movable hanger 3114, bearing pin 3115 and base 3111, movable hanger 3114 is collapsible with hinge, use when realizing lifting by dismounting or erection bolt 3113 and chock 3112, construction time the function hidden.
Workflow of the present invention is as follows:
(1) in the assembling of push-bench main frame in active well of starting
First by the main top cylinder apparatus in Rear impact 5, rear be installed in starting well by, the device such as afterbody platform, track, regulate the distance at track level measuring in Rear impact 5 and jacking center.Main frame is assembled in the following order: install anterior shield bottom 302, tail shield bottom 312 and two conveying worms 4; Utilize Concealable hanger 311 to lift by crane and anterior shield top 301, tail shield top 306, adjustable hinged sealing 308 are installed; Anterior shield and tail shield close up, and at least by two groups of correction oil cylinders 310, anterior shield are connected with tail shield; By first interior rear order that is outer, that get on, get off, cutter head 1 is installed.Start independent driving system 2 and main top cylinder apparatus, utilize top iron by main frame along in track jacking hole, stop main frame, hang out top iron, make first segment rectangle tube coupling install with tail shield and be connected, then hang in top iron, main top oil cylinder is advanced into correct position and treats to advance next time.
(2) tunneling process
Again starting independent driving system 2 makes cutter head 1 progressively reach rated speed and moment of torsion, the center fish tail cutter 104 in cutter head 1, cutting knife 105 and active stirring front, stirring rod 103 original place dregs; Start conveying worm 4 and progressively improve rotating speed, slowly open door thereafter; Adjustment main frame direction of propulsion and design misalignment of axe value, and increase the thrust of main top cylinder apparatus gradually, reach specified fltting speed, regulates and keep the pressure balance of the development end soil body and anterior shield; Dregs in the native storehouse 313 of anterior shield bottom 312, after the water that pumps into and bentonitic improvement, is delivered to holder pump in Rear impact 5 or trailer deslagging by conveying worm 4 until after first segment rectangle joint is all pushed into the soil body; Stop main frame, hang out top iron, make second section rectangle joint install with first segment tube coupling and be connected, then hang in top iron; Independent driving system 2 drives cutter head 1 to rotate, and main top cylinder apparatus advances main frame to tunnel forward, and so forth.In tunneling process, regulate tunneling direction by correction oil cylinder 310; Inject thixotropic slurry by the brim structure 307 of anterior shield and the preformed hole of tube coupling and reduce frictional resistance; In anterior shield tuning or when tunneling forward, stoped in the water of the soil body or slurries by adjustable hinged sealing 308 and ooze; Treat that push pipe operation is complete, when push-bench main frame enters and accepts well, main frame is approximately half vacant state, by oil cylinder 309 of appearing, tail shield and first segment tube coupling is initiatively departed from.
Claims (8)
1. a super large rectangular cross section shield structure push-bench, comprise the cutter head, the drive system adjacent to cutter head rear portion, the shield structure supporting whole equipment, the conveying worm that cutter head rear portion is set and the Rear impact that are arranged on front end, it is characterized in that: the cross section of described shield structure is rectangle, top arch camber; Shield structure comprises anterior shield, correction oil cylinder, tail shield, adjustable hinged sealing and oil cylinder of appearing; Anterior shield support drive system, at least connected by two groups of correction oil cylinders between anterior shield and tail shield, oil cylinder of appearing is arranged at tail shield rear end; Wherein, anterior shield is divided into anterior shield top and anterior shield bottom, and tail shield is divided into tail shield top and tail shield bottom; The tool head that described cutter head is made up of six little cutterheads of spoke type, is parallel to each other between the driving shaft of six little cutterheads of spoke type; The little cutterhead of each spoke type comprises five operator beams, is arranged on the center fish tail cutter at center, and the front of tool head and the incision periphery direction of shield shield body front end are provided with cutting knife or cutter of backbreaking.
2. a kind of super large rectangular cross section shield structure push-bench according to claim 1, it is characterized in that: described tool head is divided into the little cutterhead of anterior little cutterhead and rear portion, three the little cutterheads of spoke type forming anterior little cutterhead are in fall isosceles triangle distribution and on front same plane, and three the little cutterheads of spoke type forming the little cutterhead in rear portion are that positive isosceles triangle distributes and on rear same plane.
3. a kind of super large rectangular cross section shield structure push-bench according to claim 1 and 2, is characterized in that: the described little cutterhead back side of six spoke types is provided with several initiatively stirring rod, and the anterior little cutterhead of number ratio that initiatively stirring rod installed by the little cutterhead in rear portion is many.
4. a kind of super large rectangular cross section shield structure push-bench according to claim 1, it is characterized in that: described drive system is independent driving system, comprise six groups of independent driving devices, adopt spline joint with six little cutterheads of spoke type respectively, often organize drive unit center of rotation and be designed with swivel coupling.
5. a kind of super large rectangular cross section shield structure push-bench according to claim 1, is characterized in that: described adjustable hinged sealing comprises two seals, and the front steamed bun type that is sealed into together seals, and is sealed into two lip-type seal afterwards together.
6. a kind of super large rectangular cross section shield structure push-bench according to claim 1, it is characterized in that: described anterior shield front end ring cross section is tapered, after anterior shield, end ring cross section is box-structure, anterior shield front end edge ring week, relevant position was welded with shield body wear-resisting cutter, and anterior shield rear end outer shroud box-type section and inner ring cross section, tail shield front end adopt adjustable to be hingedly tightly connected.
7. a kind of super large rectangular cross section shield structure push-bench according to claim 1, it is characterized in that: the arch position of described anterior shield is welded with brim structure, brim structure and anterior shield arch up between position and are reserved with the flowing space that one way valve injects thixotropic slurry, and the brim of a hat rear end section gap is welded with gap backing plate.
8. a kind of super large rectangular cross section shield structure push-bench according to claim 1, is characterized in that: described anterior shield top and anterior shield bottom adopt flange to be fixedly connected with, and the flank of flange is with frange plate along girth; After anterior shield end ring cross section upper and lower between be fixedly connected with support bar; The top of described anterior shield top and/or tail shield is provided with concealed hanger, during lifting, hanger and anterior shield hinged, earhole can connect suspender; When anterior shield promotion, this hanger folded concealed in outer shroud cross section, and blocks earhole with bolt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410247831.9A CN104088647B (en) | 2014-06-06 | 2014-06-06 | Shield tube push bench with super-large rectangular cross section |
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| CN201410247831.9A CN104088647B (en) | 2014-06-06 | 2014-06-06 | Shield tube push bench with super-large rectangular cross section |
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| CN104088647A CN104088647A (en) | 2014-10-08 |
| CN104088647B true CN104088647B (en) | 2015-05-27 |
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| CN114109418A (en) * | 2021-11-22 | 2022-03-01 | 中铁二十四局集团安徽工程有限公司 | Rectangular pipe jacking machine |
| CN114233310A (en) * | 2021-12-24 | 2022-03-25 | 济南市市政工程设计研究院（集团）有限责任公司 | Square culvert jacking construction device, system and method |
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Inventor after: Li Jianbin Inventor after: Zhao Hua Inventor after: Fan Lei Inventor after: Jia Lianhui Inventor after: Zhuo Xingjian Inventor after: Dong Yanping Inventor after: Wang Xiaotao Inventor after: Gong Tingmin Inventor before: Li Jianbin Inventor before: Fan Lei Inventor before: Jia Lianhui Inventor before: Zhuo Xingjian Inventor before: Dong Yanping Inventor before: Wang Xiaotao Inventor before: Gong Tingmin |
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Free format text: CORRECT: INVENTOR; FROM: LI JIANBIN FAN LEI JIA LIANHUI ZHUO XINGJIAN DONG YANPING WANG XIAOTAO GONG TINGMIN TO: LI JIANBIN ZHAO HUA FAN LEI JIA LIANHUI ZHUO XINGJIAN DONG YANPING WANG XIAOTAO GONG TINGMIN |
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