CN113217011A - Slag discharging device of tunnel boring machine and tunnel boring machine - Google Patents
Slag discharging device of tunnel boring machine and tunnel boring machine Download PDFInfo
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- CN113217011A CN113217011A CN202110603265.0A CN202110603265A CN113217011A CN 113217011 A CN113217011 A CN 113217011A CN 202110603265 A CN202110603265 A CN 202110603265A CN 113217011 A CN113217011 A CN 113217011A
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- 239000002893 slag Substances 0.000 title claims abstract description 127
- 238000007599 discharging Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 claims abstract description 54
- 238000010079 rubber tapping Methods 0.000 claims description 18
- 239000002689 soil Substances 0.000 claims description 15
- 239000013049 sediment Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 18
- 230000005540 biological transmission Effects 0.000 description 18
- 230000006872 improvement Effects 0.000 description 17
- 230000005641 tunneling Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 239000011435 rock Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a slag discharging device of a tunnel boring machine and the tunnel boring machine, wherein the slag discharging device comprises: the exposed spiral conveying structure comprises a central driving shaft and spiral blades, wherein the central driving shaft horizontally extends along the direction corresponding to the width direction of the tunnel, the spiral blades are exposed and fixedly arranged outside the central driving shaft and axially extend along the central driving shaft, and one axial side of each spiral blade is a discharging side and is used for conveying the muck at the bottom of the tunnel to a corner area at the bottom of one side of the tunnel; the scraper conveying mechanism is correspondingly arranged on the discharge side of the spiral blade, the whole scraper conveying mechanism extends along the vertical direction, the scraper conveying mechanism is provided with a plurality of scrapers which are uniformly distributed along the circumferential direction of the scraper conveying mechanism at intervals, and the scrapers are used for upwards conveying the muck conveyed by the spiral blade onto a main belt conveyor of the tunnel boring machine. Because the spiral conveying structure is horizontally arranged, scattered muck can be collected in a large range, the dead angle of muck is effectively reduced, and the muck conveying efficiency can be effectively improved.
Description
Technical Field
The invention relates to a slag discharging device of a tunnel boring machine and the tunnel boring machine.
Background
The excavation section of the traditional hard rock tunnel boring machine is generally circular, rock slag is shoveled by a slag scraping shovel knife on a circular cutter head and enters the cutter head, the rock slag slides into a main machine belt conveyor along a slag chute along with the rotation of the cutter head, and finally the rock slag is conveyed out of the hole through the belt conveyor. However, for a tunnel with a full-face door opening shape, the tunnel is generally tunneled by a circular cutter head and auxiliary cutters at two sides, so that a required section form is obtained.
The patent application with the application publication number of CN112727483A discloses an urban door opening type tunnel boring machine, wherein a front shield is provided with a main cutter head for excavating a circular first tunnel section, auxiliary cutter heads are respectively arranged on the inner side of the front shield and two sides of the bottom of the main cutter head and used for excavating corner regions on two sides of the bottom of the first tunnel section, and then the main cutter head and the auxiliary cutter heads on the bottoms of the two sides are matched to excavate a door-shaped second tunnel section.
In the tunneling machine, in the tunneling direction, the auxiliary cutter head is positioned at the rear side of the circular main cutter head, the circular cutter head and the auxiliary cutter heads at the two sides are not positioned in the same cross section, and the shoveling cutters on the circular cutter head cannot effectively collect the slag stones cut by the auxiliary cutter heads at the two sides to the upper part of the belt conveyor, so that the slag stones cannot be rapidly transported out, and the tunneling efficiency is influenced.
In order to solve the problems, a slag collecting hopper is arranged in the tunneling process, the slag collecting hopper is positioned behind the auxiliary cutter head, the bottom of the slag collecting hopper is in contact with the bottom of the tunnel and used for collecting the slag soil, and the slag collecting device conveys the slag soil to the belt conveyor in a centralized mode. The slag collecting device comprises a driving chain wheel, a driving chain is sleeved on the periphery of the driving chain wheel, the axial direction of the driving chain wheel is consistent with the tunneling direction of the tunnel boring machine, a plurality of scraping plates are arranged on the outer ring of the annular structure of the driving chain at intervals along the circumferential direction, the slag soil at the bottom of the tunnel is collected through the scraping plates, and when the scraping plates rotate to the upper side of the belt conveyor, the contained slag soil is poured onto the top of the belt conveyor to complete the collection and the conveying of the slag soil.
However, the slag collecting device is circular, not only occupies a large space, but also cannot cover corner areas at the bottoms of two sides of the door opening-shaped tunnel, and slag soil can be accumulated at the bottoms of the two sides, so that a large slag discharging dead angle is easily formed, and the tunneling efficiency is still influenced.
Disclosure of Invention
The invention aims to provide a slag discharging device of a tunnel boring machine, which aims to solve the technical problem that a large slag discharging dead angle is easy to form when a circular slag collecting device is adopted to collect slag stones in the prior art; meanwhile, the invention also provides a tunnel boring machine, which aims to solve the technical problem that a large slag-out dead angle is easy to form so as to form slag accumulation and further influence the boring efficiency in the prior art.
In order to achieve the purpose, the technical scheme of the slag discharging device of the tunnel boring machine provided by the invention is as follows: a slag tapping device for a tunnel boring machine, comprising:
the exposed spiral conveying structure comprises a central driving shaft and spiral blades, wherein the central driving shaft horizontally extends along the direction corresponding to the width direction of the tunnel, the spiral blades are exposed and fixedly arranged outside the central driving shaft and axially extend along the central driving shaft, and one axial side of each spiral blade is a discharging side and is used for conveying the muck at the bottom of the tunnel to a corner area at the bottom of one side of the tunnel;
scraper blade conveying mechanism, the correspondence is arranged helical blade's discharge side, and scraper blade conveying mechanism extends along the upper and lower direction wholly, and scraper blade conveying mechanism has a plurality of scrapers along scraper blade conveying mechanism circumference interval equipartition, and scraper blade can follow scraper blade conveyer circumference cyclic shift, in order to be used for with the dregs that helical blade transported upwards carry to tunnel boring machine's host computer belt feeder on.
The beneficial effects are that: according to the slag discharging device of the tunnel boring machine, provided by the invention, the slag scattered at the bottom of the tunnel is collected to one side by using the spiral conveying structure and then is conveyed to the main belt conveyor in a centralized manner by the scraper conveying mechanism, and the scattered slag can be collected in a larger range due to the horizontal arrangement of the spiral conveying structure, so that the dead angle of the slag can be effectively reduced, and the slag conveying efficiency can be effectively improved.
As a further improvement, the scraper conveying mechanism comprises an upper chain wheel, a lower chain wheel and a transmission chain, and the scraper is arranged on the outer side of the transmission chain.
The beneficial effects are that: the scraper conveying mechanism adopts the mode of an upper chain wheel, a lower chain wheel and a transmission chain, has a simple structure, and is convenient to form a slender structure.
As a further improvement, the lower chain wheel is coaxially connected with the central driving shaft in a transmission way.
The beneficial effects are that: the lower chain wheel and the central driving shaft are coaxially arranged, so that the occupied space for assembly can be reduced, and the occupied volume of the slag discharging device is reduced.
As a further improvement, the upper chain wheel is a driving chain wheel which is driven by a motor to rotate, and the lower chain wheel is a driven chain wheel.
The beneficial effects are that: the upper chain wheel is a driving chain wheel, and is convenient to be provided with a motor for driving.
As a further improvement, the width direction of the drive chain coincides with the extending direction of the central drive shaft, and each scraper extends in the width direction of the drive chain.
The beneficial effects are that: the scraper extends along the width direction of the transmission chain, and can dig and take dregs to a greater extent.
As a further improvement, the helical blade comprises a middle blade section and two side blade sections, wherein the radial dimension of the middle blade section is smaller than that of the two side blade sections so as to form a middle recess for avoiding the tunnel bulge left in the middle of the bottom of the portal tunnel excavated by the tunnel boring machine.
The beneficial effects are that: the middle part of the spiral blade is sunken corresponding to the tunnel bulge left at the bottom of the tunnel, so that an avoiding structure is formed and interference is avoided.
As a further improvement, the slag discharging device of the tunnel boring machine further comprises a support frame, the support frame is used for being fixedly assembled with a main beam of the tunnel boring machine, and the exposed spiral conveying structure and the scraper conveying mechanism are both arranged on the support frame.
The beneficial effects are that: the exposed spiral conveying structure and the scraper conveying mechanism are installed in a centralized mode through the supporting frame, centralized assembly is achieved conveniently, and installation and maintenance are facilitated.
As further improvement, the slag discharging device of tunnel boring machine is including the belt feeder of slagging tap, and the belt feeder of slagging tap is followed central drive shaft axial extension, the one end of the belt feeder of slagging tap is for going into the sediment side, and the other end is for slagging tap the side, go into the floodgate side with scraper conveyor mechanism corresponds for accept by the dregs that the scraper blade was emptyd, the side of slagging tap is used for arranging in order to carry dregs to the host computer belt feeder top.
The beneficial effects are that: utilize the belt feeder of slagging tap to realize the dregs and transport, conveniently transport the dregs that scraper blade conveying mechanism went up the scraper blade and emptys to the host computer belt feeder on.
As a further improvement, a slag slide plate is arranged on the slag inlet side of the slag discharging belt conveyor, extends obliquely and is used for guiding slag soil poured by the scraper blade to the slag inlet side.
The beneficial effects are that: the slag-in side of the slag-discharging belt conveyor is provided with a slag-sliding plate, so that slag soil can be conveniently guided.
The technical scheme of the tunnel boring machine provided by the invention is as follows: a tunnel boring machine comprising:
the main beam extends in the front-back direction, a circular cutter disc is arranged at the front end of the main beam, an auxiliary cutter disc is arranged on the main beam behind the circular cutter disc, the auxiliary cutter disc is correspondingly positioned at the bottom positions of the two sides of the main beam and used for excavating corner regions of the two sides of the bottom of the tunnel;
the main belt conveyor is used for conveying the muck outside the tunnel;
the slag discharging device is positioned behind the auxiliary cutter disc and used for conveying the slag soil at the bottom of the tunnel to the main belt conveyor;
the slag tapping device comprises:
the exposed spiral conveying structure comprises a central driving shaft and spiral blades, wherein the central driving shaft horizontally extends along the direction corresponding to the width direction of the tunnel, the spiral blades are exposed and fixedly arranged outside the central driving shaft and axially extend along the central driving shaft, and one axial side of each spiral blade is a discharging side and is used for conveying the muck at the bottom of the tunnel to a corner area at the bottom of one side of the tunnel;
scraper blade conveying mechanism, the correspondence is arranged helical blade's discharge side, and scraper blade conveying mechanism extends along the upper and lower direction wholly, and scraper blade conveying mechanism has a plurality of scrapers along scraper blade conveying mechanism circumference interval equipartition, and scraper blade can follow scraper blade conveyer circumference cyclic shift, in order to be used for with the dregs that helical blade transported upwards carry to tunnel boring machine's host computer belt feeder on.
The beneficial effects are that: according to the tunnel boring machine provided by the invention, the slag discharging device is arranged corresponding to the bottom of the tunnel, the slag scattered at the bottom of the tunnel is collected to one side by using the spiral conveying structure of the slag discharging device, and then is conveyed to the main belt conveyor in a centralized manner by the scraper conveying mechanism.
As a further improvement, the scraper conveying mechanism comprises an upper chain wheel, a lower chain wheel and a transmission chain, and the scraper is arranged on the outer side of the transmission chain.
The beneficial effects are that: the scraper conveying mechanism adopts the mode of an upper chain wheel, a lower chain wheel and a transmission chain, has a simple structure, and is convenient to form a slender structure.
As a further improvement, the lower chain wheel is coaxially connected with the central driving shaft in a transmission way.
The beneficial effects are that: the lower chain wheel and the central driving shaft are coaxially arranged, so that the occupied space for assembly can be reduced, and the occupied volume of the slag discharging device is reduced.
As a further improvement, the upper chain wheel is a driving chain wheel which is driven by a motor to rotate, and the lower chain wheel is a driven chain wheel.
The beneficial effects are that: the upper chain wheel is a driving chain wheel, and is convenient to be provided with a motor for driving.
As a further improvement, the width direction of the drive chain coincides with the extending direction of the central drive shaft, and each scraper extends in the width direction of the drive chain.
The beneficial effects are that: the scraper extends along the width direction of the transmission chain, and can dig and take dregs to a greater extent.
As a further improvement, the helical blade comprises a middle blade section and two side blade sections, wherein the radial dimension of the middle blade section is smaller than that of the two side blade sections so as to form a middle recess for avoiding the tunnel bulge left in the middle of the bottom of the portal tunnel excavated by the tunnel boring machine.
The beneficial effects are that: the middle part of the spiral blade is sunken corresponding to the tunnel bulge left at the bottom of the tunnel, so that an avoiding structure is formed and interference is avoided.
As a further improvement, the slag discharging device further comprises a support frame, the support frame is used for being fixedly assembled with a main beam of the tunnel boring machine, and the exposed spiral conveying structure and the scraper conveying mechanism are both arranged on the support frame.
The beneficial effects are that: the exposed spiral conveying structure and the scraper conveying mechanism are installed in a centralized mode through the supporting frame, centralized assembly is achieved conveniently, and installation and maintenance are facilitated.
As further improvement, the slag discharging device is including the belt feeder of slagging tap, and the belt feeder of slagging tap is followed central drive shaft axial extension, the one end of the belt feeder of slagging tap is for going into the sediment side, and the other end is for slagging tap the side, go into the floodgate side with scraper blade conveying mechanism corresponds for accept by the dregs that the scraper blade was emptyd, the side of slagging tap is used for arranging in order to carry dregs to the host computer belt feeder in host computer belt feeder top.
The beneficial effects are that: utilize the belt feeder of slagging tap to realize the dregs and transport, conveniently transport the dregs that scraper blade conveying mechanism went up the scraper blade and emptys to the host computer belt feeder on.
As a further improvement, a slag slide plate is arranged on the slag inlet side of the slag discharging belt conveyor, extends obliquely and is used for guiding slag soil poured by the scraper blade to the slag inlet side.
The beneficial effects are that: the slag-in side of the slag-discharging belt conveyor is provided with a slag-sliding plate, so that slag soil can be conveniently guided.
Drawings
FIG. 1 is a schematic cross-sectional view of a portal tunnel;
fig. 2 is a schematic view of a partial structure of the tunnel boring machine according to the present invention;
fig. 3 is a right side view of the tapping device in fig. 2 (in the figure the horizontal arrow indicates the heading direction and the oblique arrow indicates the direction of movement of the blade towards the side of the arrow).
Description of reference numerals:
1. a screw conveying structure; 11. a central drive shaft; 12. a helical blade; 121. a middle blade segment; 122. two flanking leaf segments; 2. a motor; 3. a scraper conveying mechanism; 31. a drive sprocket; 32. a bucket; 33. a driven sprocket; 34. a drive chain; 5. a deslagging belt conveyor; 51. a slag entering side; 52. a slag discharging side; 6. a slag chute; 7. a support frame; 8. a main beam; 9. host computer belt feeder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrase "comprising an … …" do not exclude the inclusion of such elements in processes or methods.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the tunnel boring machine provided by the invention:
the tunnel boring machine in this embodiment is mainly used for processing and excavating a portal tunnel, and the basic structure of the tunnel boring machine is the same as that of an urban portal tunnel boring machine disclosed in application publication No. CN112727483A, and details are not repeated here.
The tunnel boring machine of here includes the girder on the whole, extend along the fore-and-aft direction, the girder front end sets up circular blade disc, a first tunnel section for excavating the circular shape, like region B in fig. 1, just be located circular blade disc bottom both sides and be equipped with supplementary blade disc respectively in the inboard of front shield, supplementary blade disc is located circular blade disc rear side, a corner region C for excavating the bottom both sides of first tunnel section, and then cooperate the excavation through the supplementary blade disc of main blade disc and both sides bottom and form second tunnel section A of door opening shape, door opening shape cross-section promptly. In addition, as shown in fig. 1, a remaining tunnel projection is formed at a transition region D of the circular cutter cutting region and the auxiliary cutter cutting region.
Compared with the existing tunneling machine for a portal tunnel, the tunnel tunneling machine provided by the embodiment is mainly characterized in that a slag discharging device is added, the specific structure is shown in fig. 2 and fig. 3, for convenience, the tunneling direction of the tunneling machine is defined as the front, namely, the tunneling machine tunnels the tunnel forwards, on the tunneling machine in the embodiment, a slag discharging device is installed behind an auxiliary cutter head on a main beam 8, and is mainly used for conveying the slag excavated by the auxiliary cutter heads on two sides to a main belt conveyor 9, because the slag excavated by the circular cutter head is shoveled by a slag scraping shovel on the circular cutter head into the cutter head, and slides into the main belt conveyor 9 along a corresponding slag slide plate along with the rotation of the cutter head so as to realize slag transportation, and the slag discharging device mainly cleans the slag excavated by the auxiliary cutter head and the residual slag.
As shown in fig. 2 and 3, the slag tapping device comprises a support frame 7, the support frame 7 is fixedly assembled with a main beam 8, the exposed spiral conveying structure 1 and the scraper conveying mechanism 3 are installed on the support frame 7, and then the exposed spiral conveying structure 1 and the scraper conveying mechanism 3 are installed on the main beam 8.
Specifically, the exposed spiral conveying structure 1 comprises a central driving shaft 11 and spiral blades 12, the central driving shaft 11 transversely extends along a horizontal direction corresponding to the width direction of the tunnel, two ends of the central driving shaft 11 are rotatably assembled on the supporting frame 7, and the rotary supporting assembly can be realized through a bearing structure. The helical blade 12 is exposed and fixedly arranged outside the central driving shaft 11, and the helical blade 12 axially extends along the central driving shaft 11, so that one axial side of the helical blade 12 is a discharging side for conveying the dregs at the bottom of the tunnel to the corner area at the bottom of one side of the tunnel. The right side in figure 2 is the discharge side, when the heading machine is heading forwards, the central driving shaft 11 drives the helical blade 12 to rotate, the helical blade 12 can collect all the muck in the bottom area of the tunnel covered transversely, the muck is conveyed rightwards together and accumulated, and then the muck is conveyed upwards to the muck belt conveyor 5 by the scraper conveying mechanism 3, so that the muck discharging operation is realized.
It should be noted that, the rotation direction and the rotation direction of the spiral blade 12 have a corresponding relationship, and it is necessary to ensure that the waste soil is pushed to the side where the scraper conveying mechanism 3 is arranged.
It should be noted that, as shown in fig. 1, because there are transition regions in the circular cutter head and the auxiliary cutter heads on both sides, and a tunnel bulge may be left in the middle of the tunnel bottom, the vane radius of the spiral vane 12 is appropriately reduced corresponding to the transition region D, so that the radial dimension of the middle vane segment 121 is smaller than the radial dimension of the vane segments 122 on both sides, so as to form a middle recess for avoiding the tunnel bulge, and ensure that the spiral vane 12 can normally rotate without interfering with the bulge on the bottom.
In this embodiment, scraper conveyor 3 corresponds arranges the discharge side at helical blade 12, scraper conveyor 3 extends along the upper and lower direction entirely, scraper conveyor 3 includes the sprocket, lower sprocket and drive chain 34, the last sprocket of here is drive sprocket 31, rotate by the drive of motor 2, the lower sprocket is driven sprocket 33, and, the lower sprocket is connected with central drive shaft 11 coaxial drive, drive chain 34's width direction is unanimous with central drive shaft 11 extending direction, so, drive sprocket 31 passes through drive chain 34 drive driven sprocket 33 transmission, drive central drive shaft 11 synchronous revolution by driven sprocket 33, and then drive helical blade 12 rotates, realize the dregs transport.
The scraper is characterized in that a plurality of scrapers are installed on the outer side of the transmission chain 34, the scrapers are distributed at intervals along the circumferential direction of the scraper conveying mechanism 3, each scraper extends along the width direction of the transmission chain 34, the scraper is specifically in a bucket 32 shape, a bucket 32 groove is formed in the scraper, the scraper is used for upwards conveying the slag to a main belt conveyor 9 of the tunnel boring machine in the process of circularly moving along with the transmission chain 34, specifically, when the scraper moves to the bottom, the accumulated partial slag can be automatically dug, the scraper gradually moves upwards under the driving of the transmission chain 34, after the scraper crosses an upper chain wheel, the scraper can dump the slag onto a slag discharge belt conveyor 5, and the slag is transferred onto the main belt conveyor 9 through the slag discharge belt conveyor 5.
In this embodiment, slag tap belt feeder 5 is whole to be extended along central drive shaft 11 axial, and, be located scraper conveyor 3's rear, the one end of slag tap belt feeder 5 is for going into slag side 51, the other end is slag tap side 52, the income floodgate side of here corresponds with scraper conveyor 3, be used for accepting the dregs of a decoction dumped by the scraper blade, slag tap side 52 then arranges in order to carry the dregs of a decoction to host machine belt feeder 9 in host machine belt feeder 9 top, for conveniently carrying the dregs of a decoction, the whole slope of slag tap belt feeder 5 of here is arranged, and it is higher than slag tap side 52 to go into slag side 51.
For conveniently accepting dregs, a slag slide plate 6 is arranged on the dreg entering side 51 of the dreg discharging belt conveyor 5, and the slag slide plate 6 extends obliquely and is used for guiding the dregs poured by the scraper blade to the dreg entering side 51 so as to realize the transfer of the dregs.
The entry driving machine is at the during operation, the circular blade disc in the place ahead and the supplementary blade disc cooperation excavation door hole type tunnel of both sides, arrange the dregs of a river bottom dispersion by horizontal formula 1 of arranging in the tunnel bottom and collect to carry and pile up to one side, by the scraper conveyor mechanism 3 that is located one side with piling up dregs of a river upwards transport to slagging tap on the belt feeder 5, and by slagging tap belt feeder 5 with dregs of a river transport to the host computer belt feeder 9 in, finally by host computer belt feeder 9 transport outside the hole, accomplish and slag tap.
In the tunnel boring machine that this embodiment provided, utilize the horizontal spiral delivery structure who arranges to collect the dregs of dispersion bottom the tunnel to one side, transport by scraper blade conveying mechanism again, the area of coverage of collecting the dregs is big, and the transportation is concentrated, can effectively reduce the dead angle of slagging tap, guarantees the effect of slagging tap, reduces the influence to tunnelling efficiency.
The specific embodiment 2 of the tunnel boring machine provided by the invention is as follows:
the difference from example 1 is mainly that: in embodiment 1, the flight conveying mechanism includes an upper sprocket, a lower sprocket, and a drive chain. In this embodiment, the scraper conveying mechanism may also adopt a structure of a slag collecting device in an urban door opening tunnel boring machine disclosed in application publication No. CN112727483A, and may include a single driving sprocket and an annular transmission chain arranged around the driving sprocket, at this time, the central axis of the driving sprocket is parallel to the central axis of the central driving shaft, and a bucket-shaped hanging plate may be disposed on the annular transmission chain to meet the requirement of transferring slag soil.
At this time, of course, in order to ensure the normal operation of the screw conveying structure, a separate driving device needs to be arranged corresponding to the central driving shaft so as to drive the central driving shaft to rotate with the helical blades.
The specific embodiment 3 of the tunnel boring machine provided by the invention is as follows:
the difference from example 1 is mainly that: in the embodiment 1, the lower chain wheels are coaxially connected with the central driving shaft in a transmission way, and the central driving shaft is driven by the corresponding lower chain wheels to rotate and share one motor. In this embodiment, the driving motors can be independently configured corresponding to the scraper conveying mechanism and the screw conveying mechanism respectively to satisfy normal operation.
The specific embodiment 4 of the tunnel boring machine provided by the invention is as follows:
the difference from example 1 is mainly that: in embodiment 1, the slag discharging device comprises a support frame, and the spiral conveying structure and the scraper conveying mechanism are integrally assembled by using the support frame. In this embodiment, the frames may be respectively disposed corresponding to the screw conveying mechanism and the scraper conveying mechanism, so as to realize the split corresponding installation.
The specific embodiment 5 of the tunnel boring machine provided by the invention:
the difference from example 1 is mainly that: in embodiment 1, a slag-out belt conveyor is arranged as a transfer conveyor to transfer the slag conveyed by the scraper conveying mechanism to a main belt conveyor. In this embodiment, also can save the belt feeder of slagging tap, at this moment, can extend to the host computer belt feeder top with scraper conveyor mechanism slope, perhaps improve the structure of host computer belt feeder, make integrative one extend the branch of carrying on the host computer belt feeder, act as the belt feeder of slagging tap by carrying the branch and transport the dregs.
The specific embodiment 6 of the tunnel boring machine provided by the invention is as follows:
the difference from example 1 is mainly that: in embodiment 1, the belt conveyor of slagging tap is located the rear of scraper blade conveying mechanism. In this embodiment, the slag-tapping belt conveyor can also be located in front of the scraper conveying mechanism, and at this time, the operation direction of the scraper conveying mechanism needs to be correspondingly adjusted, and the orientation of the scraper needs to be noticed, so as to ensure that the bucket can normally dig the slag.
The specific embodiment 7 of the tunnel boring machine provided by the invention:
the difference from example 1 is mainly that: in embodiment 1, the blade conveying mechanism includes an upper sprocket, a lower sprocket, a drive chain, and a bucket blade. In this embodiment, the scraper conveying mechanism can also adopt a continuous slag extractor disclosed in the utility model with the publication number of CN2787667Y, and can also dig and transfer the slag at the bottom of the tunnel to the upper side, and the difference mainly lies in that the specific shape of the scraper is different, but the difference can be adjusted according to the actual requirement.
In the embodiment of the slag tapping device of the tunnel boring machine, the structure of the slag tapping device in the embodiment is the same as that in the embodiment 1 of the tunnel boring, and the detailed description is omitted.
In other embodiments, the structure of the slag tapping device in any one of the above tunnel driving embodiments 2 to 7 may also be adopted, and details are not repeated here.
Finally, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments without departing from the inventive concept, or some of the technical features may be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A slag tapping device of a tunnel boring machine, comprising:
the exposed spiral conveying structure (1) comprises a central driving shaft (11) and spiral blades (12), wherein the central driving shaft (11) horizontally extends along the horizontal direction corresponding to the width direction of the tunnel, the spiral blades (12) are exposed and fixedly arranged outside the central driving shaft (11) and axially extend along the central driving shaft (11), and one axial side of each spiral blade (12) is a discharging side and is used for conveying the muck at the bottom of the tunnel to a corner area at the bottom of one side of the tunnel;
the scraper conveying mechanism (3) is correspondingly arranged on the discharge side of the spiral blades (12), the scraper conveying mechanism (3) integrally extends along the vertical direction, the scraper conveying mechanism (3) is provided with a plurality of scrapers which are uniformly distributed along the circumferential direction of the scraper conveying mechanism (3) at intervals, and the scrapers can circularly move along the circumferential direction of the scraper conveyor so as to be used for conveying the slag soil conveyed by the spiral blades (12) upwards onto a main belt conveyor (9) of the tunnel boring machine.
2. The slag tapping device of a tunnel boring machine according to claim 1, wherein the scraper conveyor mechanism (3) comprises an upper sprocket, a lower sprocket and a drive chain (34), the scraper being arranged outside the drive chain (34).
3. Tapping device according to claim 2, wherein the lower sprocket is in coaxial driving connection with the central drive shaft (11).
4. The slag tapping device of the tunnel boring machine according to claim 3, wherein the upper sprocket is a driving sprocket (31), the driving sprocket (31) is driven by the motor (2) to rotate, and the lower sprocket is a driven sprocket (33).
5. Tapping device according to claim 2, wherein the width direction of the drive chain (34) coincides with the direction in which the central drive shaft (11) extends, the scrapers each extending in the width direction of the drive chain (34).
6. Slag tapping device of a tunnel boring machine according to any one of claims 1 to 5, wherein the helical blade (12) comprises a middle blade section (121) and two side blade sections (122), the middle blade section (121) having a radial dimension which is smaller than the radial dimension of the two side blade sections (122) to form a central recess for avoiding a tunnel bulge left in the middle of the bottom of a portal tunnel excavated by the tunnel boring machine.
7. A slag tapping device for a tunnel boring machine according to any one of claims 1 to 5, wherein the slag tapping device further comprises a support bracket (7), the support bracket (7) being adapted for fixed mounting with a main beam (8) of the tunnel boring machine, the exposed screw conveyor structure (1) and the scraper conveyor mechanism (3) being mounted on the support bracket (7).
8. The slag discharging device of the tunnel boring machine according to claim 7, characterized in that, the slag discharging device of the tunnel boring machine includes slag discharging belt conveyor (5), and slag discharging belt conveyor (5) is followed central drive shaft (11) axial extension, the one end of slag discharging belt conveyor (5) is for going into sediment side (51), and the other end is for slag discharging side (52), goes into the floodgate side with scraper conveyor (3) correspond for accept by the dregs that the scraper blade was emptyd, slag discharging side (52) are used for arranging in order to carry dregs to host belt conveyor (9) above host belt conveyor (9).
9. Slag tapping device of a tunnel boring machine according to claim 8, wherein a slag chute (6) is arranged at the slag inlet side (51) of the slag tapping belt conveyor (5), the slag chute (6) extending obliquely for guiding slag dumped by the scraper to the slag inlet side (51).
10. A tunnel boring machine comprising:
the main beam (8) extends in the front-back direction, a circular cutter disc is arranged at the front end of the main beam (8), an auxiliary cutter disc is arranged on the main beam (8) and behind the circular cutter disc, the auxiliary cutter disc is correspondingly positioned at the bottom positions of the two sides of the main beam (8), and the auxiliary cutter disc is used for excavating corner regions of the two sides of the bottom of the tunnel;
the main machine belt conveyor (9) is used for conveying the muck outside the tunnel;
the tunnel boring machine is characterized by further comprising a slag discharging device, wherein the slag discharging device is located behind the auxiliary cutter head and adopts the slag discharging device of the tunnel boring machine according to any one of claims 1 to 9 to convey the slag soil at the bottom of the tunnel to the main belt conveyor (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603265.0A CN113217011A (en) | 2021-05-31 | 2021-05-31 | Slag discharging device of tunnel boring machine and tunnel boring machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110603265.0A CN113217011A (en) | 2021-05-31 | 2021-05-31 | Slag discharging device of tunnel boring machine and tunnel boring machine |
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| CN113217011A true CN113217011A (en) | 2021-08-06 |
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| CN202110603265.0A Pending CN113217011A (en) | 2021-05-31 | 2021-05-31 | Slag discharging device of tunnel boring machine and tunnel boring machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116335704A (en) * | 2023-05-31 | 2023-06-27 | 中铁电气化局集团有限公司 | Slag soil clearing device for tunnel boring machine |
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| CN112727483A (en) * | 2021-02-07 | 2021-04-30 | 中铁工程装备集团有限公司 | Tunnel boring machine and construction method thereof |
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| CN208441839U (en) * | 2018-06-27 | 2019-01-29 | 中铁工程装备集团有限公司 | A kind of U-shaped shield machine |
| CN112607360A (en) * | 2021-01-20 | 2021-04-06 | 河南理工大学 | Collecting and transshipping mechanism for bulk materials |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116335704A (en) * | 2023-05-31 | 2023-06-27 | 中铁电气化局集团有限公司 | Slag soil clearing device for tunnel boring machine |
| CN116335704B (en) * | 2023-05-31 | 2023-07-25 | 中铁电气化局集团有限公司 | Slag soil clearing device for tunnel boring machine |
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Application publication date: 20210806 |