CN116411969A - Construction device and construction method for shield tunnel - Google Patents
Construction device and construction method for shield tunnel Download PDFInfo
- Publication number
- CN116411969A CN116411969A CN202310239478.9A CN202310239478A CN116411969A CN 116411969 A CN116411969 A CN 116411969A CN 202310239478 A CN202310239478 A CN 202310239478A CN 116411969 A CN116411969 A CN 116411969A
- Authority
- CN
- China
- Prior art keywords
- blanking
- slope plate
- water injection
- assembly
- fragments
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 239000012634 fragment Substances 0.000 claims abstract description 93
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 116
- 238000002347 injection Methods 0.000 claims description 61
- 239000007924 injection Substances 0.000 claims description 61
- 238000003756 stirring Methods 0.000 claims description 34
- 238000011010 flushing procedure Methods 0.000 claims description 27
- 239000012535 impurity Substances 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 15
- 239000002245 particle Substances 0.000 abstract description 13
- 239000011435 rock Substances 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
- B01D29/74—Regenerating the filter material in the filter by forces created by movement of the filter element involving centrifugal force
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
-
- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
Landscapes
- 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)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application relates to a construction device and a construction method of a shield tunnel, and relates to the technical field of tunnel shield construction, wherein the construction device comprises a machine body, a machine head, a fragment processing mechanism, a first conveying assembly and a second conveying assembly, wherein the fragment processing mechanism is arranged in the machine body; the fragment treatment mechanism comprises a screw conveyor and a fragment layering assembly, and a feed inlet of the screw conveyor is positioned at the machine head; the fragment layering assembly comprises a treatment box, a feeding groove positioned below a discharge hole of the screw conveyor is formed in the treatment box, a first blanking slope plate and a second blanking slope plate are arranged in the treatment box, the second blanking slope plate is positioned below the first blanking slope plate, and a plurality of distributing holes are formed in the first blanking slope plate. According to the rock fragment separating device, fragments with different particle sizes are separated through the material distributing holes in the first blanking slope plate, the blocking condition of the fragments in the first conveying assembly and the second conveying assembly is reduced, and the rock fragment is convenient to convey.
Description
Technical Field
The application relates to the technical field of tunnel shield construction, in particular to a construction device and a construction method of a shield tunnel.
Background
With the development of economy, a shield tunnel has become a main construction method for urban underground rail traffic construction and underground space development in soft soil areas of China. The shield tunnel is a tunnel underground excavation construction method adopting a shield tunneling machine to excavate and taking reinforced concrete segments as lining supports. The shield machine constructs (lays) a 'shield' (refer to a supporting segment) of a tunnel while tunneling, which is different from an open construction method, and in the construction process of the present stage, the shield machine needs to discharge rock scraps after stripping the scraps of the rock stratum, so that space is reserved for operation, and the existing shield machine is mostly realized by high-speed and high-pressure water circulation when discharging the scraps.
With respect to the related art in the above, there are the following drawbacks: fragments peeled off by the shield machine are large or small, so that the fragments of rock fragments are easily accumulated in a conveying pipeline to cause blockage.
Disclosure of Invention
In order to facilitate conveying of rock fragments, the application aims to provide a construction device and a construction method of a shield tunnel.
The first purpose that this application provided is a construction equipment of shield tunnel, adopts following technical scheme:
the construction device of the shield tunnel comprises a machine body, a machine head and a fragment processing mechanism, wherein the fragment processing mechanism is arranged in the machine body; the fragment treatment mechanism comprises a screw conveyor and a fragment layering assembly, and a feed inlet of the screw conveyor is positioned at the machine head; the broken piece layering assembly comprises a processing box, a feeding groove positioned below a discharge hole of the screw conveyor is arranged on the processing box, a first blanking slope plate and a second blanking slope plate are arranged in the processing box, the second blanking slope plate is positioned below the first blanking slope plate, and a plurality of distributing holes are formed in the first blanking slope plate; the side wall of the treatment box is provided with a first blanking port, and the first blanking port is positioned at the joint of the treatment box and the bottom end of the first blanking slope plate; the side wall of the treatment box is provided with a second blanking port, and the second blanking port is positioned at the joint of the treatment box and the bottom end of the second blanking slope plate; the machine body is internally provided with a first conveying assembly communicated with the first blanking port, and a second conveying assembly communicated with the second blanking port.
By adopting the technical scheme, fragments peeled off by the machine head of the shield machine are conveyed into the treatment box under the action of the screw conveyor; fragments with smaller particle sizes can fall onto the second blanking slope plate through the material distributing holes and then move into the second conveying assembly through the second blanking port to be discharged; fragments with larger grain sizes roll downwards along the first blanking slope plate, then move to the first conveying assembly through the first blanking opening to be discharged, namely fragments with different grain sizes are separated through the distributing holes on the first blanking slope plate, the situation that the fragments are blocked in the first conveying assembly and the second conveying assembly is reduced, and the fragments of rock fragments are convenient to convey.
Optionally, a stirring wheel is rotatably connected in the processing box, the stirring wheel is positioned between the feeding chute and the first blanking slope plate, and the rotating shaft of the stirring wheel is parallel to the first blanking slope plate; the treatment box is provided with a driving piece for driving the stirring wheel to rotate.
Through adopting above-mentioned technical scheme, start the driving piece and can make the agitator wheel rotatory, be convenient for stir the fragment that falls into first unloading slope board top for more less fragments pass through the feed opening in order to fall into on the second unloading slope board, thereby improve the conveying efficiency of detritus fragment.
Optionally, a crushing wheel is rotationally connected in the processing box, the crushing wheel is positioned between the feeding chute and the first blanking slope plate, and the rotating shaft of the crushing wheel is parallel to the rotating shaft of the stirring wheel; the rotary shaft of the stirring wheel is provided with a driving gear, and the rotary shaft of the crushing wheel is provided with a driven gear meshed with the driving gear.
By adopting the technical scheme, the crushing wheel can crush fragments falling above the first blanking slope plate, so that smaller fragments occupy more proportion; meanwhile, the driving gear is matched with the driven gear, so that the rotation directions of the crushing wheel and the stirring wheel are opposite, namely fragments brought up by the stirring wheel are opposite to those of the crushing wheel, the crushing effect of the crushing wheel on the fragments is better, and therefore more smaller fragments are discharged through the second conveying assembly, and the conveying efficiency is improved.
Optionally, a vibration piece is arranged on the surface, far away from the first blanking slope plate, of the second blanking slope plate.
Through adopting above-mentioned technical scheme, vibrations piece can let the second unloading slope board produce vibrations, reduces the condition that the fragment adhered to on the second unloading slope board to make the better follow second feed opening of fragment remove to the interior discharge of second conveying assembly.
Optionally, a circulating water injection mechanism is arranged in the machine body, the circulating water injection mechanism comprises a water injection pipe, one end of the water injection pipe is positioned at the machine head, and the other end of the water injection pipe is rotationally connected with a filter screen; the water injection pipe is provided with a power assembly for driving the filter screen to rotate so as to throw away impurities on the filter screen, and the water injection pipe is also provided with a flushing assembly for flushing the impurities on the filter screen.
By adopting the technical scheme, when the filter screen is blocked, the power assembly is started to drive the filter screen to rotate so as to throw away impurities adhered to the filter screen under the action of centrifugal force, and meanwhile, the flushing assembly flushes away the impurities on the filter screen, so that the filter screen is automatically cleaned without manual cleaning of a worker; the device greatly reduces the blocking condition of impurities on the filter screen, ensures that the circulating water injection mechanism normally injects water to the machine head so that the shield tunneling machine works normally, and greatly reduces the complexity of cleaning the filter screen by staff regularly.
Optionally, the flushing assembly includes a flushing nozzle and a water delivery piece, the flushing nozzle is installed in the water injection pipe and faces the inner wall of the filter screen, and the water delivery piece is used for conveying water to the flushing nozzle.
Through adopting above-mentioned technical scheme, the water delivery spare is carried water to the shower nozzle that washes, and the rethread shower nozzle is washed water on the inner wall of filter screen to wash away the impurity on the filter screen from inside to outside, realize the self-cleaning to the filter screen.
Optionally, the filter screen comprises a cylinder body, a plurality of force application grooves with evenly distributed circumferences are formed in the side surface of the cylinder body, and drain holes communicated with the force application grooves are formed in the inner wall of the cylinder body respectively; the power assembly comprises a plurality of power spray heads, the power spray heads are arranged in the water injection pipe and respectively face to the force application grooves, the depth of the force application grooves is gradually increased, and the water drain holes are positioned at the bottoms of the force application grooves.
By adopting the technical scheme, when water in the power spray head reaches the bottom of the force application groove, the filter screen is driven to automatically rotate by a rotating force applied to the bottom of the force application groove.
Optionally, the water delivery piece comprises a water delivery pipe, the water delivery pipe penetrates through the pipe wall of the water injection pipe, and the flushing nozzle is communicated with one end of the water delivery pipe, which is positioned in the water injection pipe; the water delivery pipe is communicated with the branch pipes, and a plurality of power spray heads are distributed on the branch pipes in a circumferential array.
Through adopting above-mentioned technical scheme, the raceway is simultaneously to washing shower nozzle and power shower nozzle conveying water, realizes the purpose of washing away and throwing away the impurity on the filter screen, simple structure.
Optionally, annular guide way has been seted up to the inner wall of water injection pipe, the outer wall of drum body is provided with the turning block with guide way sliding fit.
Through adopting above-mentioned technical scheme, the rotor block cooperatees with the guide way, can play the guide effect to the rotation of filter screen.
Another object provided by the application is a construction method of a shield tunnel, which adopts the following technical scheme:
the construction method of the shield tunnel comprises the following steps:
completing assembly of the shield machine at the bottom of the starting well, and injecting water into the head of the shield machine through a circulating water injection mechanism;
conveying fragments generated in the working process of the machine head into a processing box by using a screw conveyor;
the driving piece works to drive the stirring wheel and the crushing wheel to rotate, and fragments positioned above the first blanking slope plate in the treatment box are crushed through the stirring wheel and the crushing wheel;
the vibration piece works to drive the second blanking slope plate to vibrate, fragments are discharged out of the treatment box from the second blanking slope plate, and the fragments are conveyed out of the tunnel through the first conveying assembly and the second conveying assembly.
By adopting the technical scheme, fragments peeled off by the machine head of the shield machine are conveyed into the treatment box under the action of the screw conveyor; fragments with smaller particle sizes can fall onto the second blanking slope plate through the material distributing holes and then move into the second conveying assembly through the second blanking port to be discharged; fragments with larger grain sizes roll downwards along the first blanking slope plate, then move to the first conveying assembly through the first blanking opening to be discharged, namely fragments with different grain sizes are separated through the distributing holes on the first blanking slope plate, the situation that the fragments are blocked in the first conveying assembly and the second conveying assembly is reduced, and the fragments of rock fragments are convenient to convey.
In summary, the present application includes at least one of the following beneficial technical effects:
1. fragments peeled off by the machine head of the shield machine are conveyed into a treatment box under the action of a spiral conveyor; fragments with smaller particle sizes can fall onto the second blanking slope plate through the material distributing holes and then move into the second conveying assembly through the second blanking port to be discharged; fragments with larger grain sizes roll downwards along the first blanking slope plate and then move to the first conveying assembly through the first blanking opening to be discharged, namely fragments with different grain sizes are separated through the distributing holes on the first blanking slope plate, the situation that the fragments are blocked in the first conveying assembly and the second conveying assembly is reduced, and the fragments of rock fragments are convenient to convey;
2. when the filter screen is blocked, the power assembly is started to drive the filter screen to rotate so as to throw off impurities adhered to the filter screen under the action of centrifugal force, and meanwhile, the flushing assembly flushes off the impurities on the filter screen, so that the filter screen is automatically cleaned without manual cleaning of the filter screen by workers; the device greatly reduces the blocking condition of impurities on the filter screen, ensures that the circulating water injection mechanism normally injects water to the machine head so that the shield tunneling machine works normally, and greatly reduces the complexity of cleaning the filter screen by staff regularly.
Drawings
Fig. 1 is a schematic structural diagram of a construction device of a shield tunnel in an embodiment of the present application;
FIG. 2 is a schematic view of the structure of the screw conveyor, crumb layering assembly, first conveying assembly and second conveying assembly in an embodiment of the present application;
FIG. 3 is a partial cross-sectional view of a morcellating layered assembly in an embodiment of the present application;
FIG. 4 is a schematic view of the structure of the water injection pipe, the filter screen and the water tank in the embodiment of the application;
fig. 5 is a partial cross-sectional view of a water injection pipe and a filter screen in an embodiment of the present application.
Reference numerals illustrate: 1. a main body; 2. a machine head; 3. spiral screw a conveyor; 4. a fragment layering assembly; 41. a treatment box; 42. a feed chute; 43. a first blanking slope plate; 44. a second blanking slope plate; 45. a material distributing hole; 5. a first blanking port; 6. a second feed opening; 7. a first transport assembly; 71. a first conveyor belt; 72. a first delivery tube; 72. a first guide plate; 8. a second transport assembly; 81. a second conveyor belt; 82. a second delivery tube; 83. a second guide plate; 9. a stirring wheel; 10. a driving member; 11. a crushing wheel; 12. a drive gear; 13. a driven gear; 14. a vibrating member; 15. a water injection pipe; 16. a filter screen; 161. a cylinder body; 17. a power assembly; 171. a force application groove; 172. a drain hole; 173. a power nozzle; 18. a flushing assembly; 181. flushing the spray head; 182. a water pipe; 19. a branch pipe; 20. a guide groove; 21. a rotating block; 22. a water tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to fig. 1 to 5 and the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
The embodiment of the application discloses construction equipment of shield tunnel, as shown in fig. 1, this construction equipment includes quick-witted main part 1 and aircraft nose 2, and aircraft nose 2 installs the front end at quick-witted main part 1, and aircraft nose 2 adopts big bearing to rotate to connect on quick-witted main part 1. A driving motor (not shown) for driving the machine head 2 to rotate is arranged in the machine body 1, and a plurality of evenly distributed cutters (not shown) are fixed on the surface of the machine head 2 away from the machine body 1. The machine head 2 is driven to rotate by the driving motor, so that a cutter on the machine head 2 cuts soil of a tunnel, and scraps of a rock stratum are peeled off.
As shown in fig. 1 and 2, in order to convey fragments peeled off by a cutter, a fragment processing mechanism is arranged in a machine body 1, the fragment processing mechanism comprises a screw conveyor 3, a feed inlet of the screw conveyor 3 is positioned at the joint of a machine head 2 and the machine body 1, and the feed inlet of the screw conveyor 3 is opposite to the bottom of the machine head 2; the screw conveyor 3 is obliquely arranged, and the discharge port of the screw conveyor 3 is higher than the feed port of the screw conveyor 3. The broken pieces peeled off by the cutter can be lifted up by the screw conveyor 3.
As shown in fig. 1 and 2, the fragment processing mechanism further comprises a fragment layering assembly 4, the fragment layering assembly 4 comprises a processing box 41, the processing box 41 is a hollow square box body, a feeding groove 42 is fixedly welded on the upper surface of the processing box 41, the feeding groove 42 is of a circular tube structure, and the feeding groove 42 is located below a discharge hole of the screw conveyor 3. In this embodiment, the top end of the feed chute 42 is fixed to the discharge port of the screw conveyor 3 by welding, and fragments lifted by the screw conveyor 3 can fall into the processing box 41 through the feed chute 42.
As shown in fig. 2 and 3, in order to separate fragments with different particle sizes, a first blanking ramp plate 43 and a second blanking ramp plate 44 are installed in the processing box 41, the second blanking ramp plate 44 is located below the first blanking ramp plate 43, and a plurality of distributing holes 45 are formed in the first blanking ramp plate 43. In this embodiment, the first blanking slope plate 43 and the second blanking slope plate 44 are fixed on the inner wall of the processing box 41 in a welding manner respectively, and a plurality of distributing holes 45 are uniformly distributed on the first blanking slope plate 43; fragments with smaller particle sizes can fall onto the second blanking ramp 44 through the distribution holes 45 and then roll downwards along the second blanking ramp 44; the larger sized pieces will roll down the first blanking ramp 43.
As shown in fig. 2 and 3, in order to discharge fragments with different particle sizes, a first blanking port 5 is formed in the side wall of the processing box 41, and the first blanking port 5 is located at the joint of the processing box 41 and the bottom end of the first blanking slope plate 43; the side wall of the treatment box 41 is provided with a second blanking opening 6, and the second blanking opening 6 is positioned at the joint of the treatment box 41 and the bottom end of the second blanking slope plate 44. In this embodiment, the first and second feed openings 5, 6 are located on the same side wall of the treatment tank 41. In other embodiments, the orientations of the first blanking port 5 and the second blanking port 6 may be adjusted according to actual working conditions.
As shown in fig. 2 and 3, in order to convey the pieces out of the tunnel, a first conveying assembly 7 and a second conveying assembly 8 are installed in the machine body 1. The first conveying assembly 7 includes a first conveying belt 71, a first conveying pipe 72 and a first material guiding plate 72, the first material guiding plate 72 is located between the first conveying belt 71 and the first conveying pipe 72, the first material guiding plate 72 is arranged in a downward inclined mode from the first conveying belt 71 to the first conveying pipe 72, and one end, away from the first material guiding plate 72, of the first conveying belt 71 is located at the first blanking opening 5. The second conveying assembly 8 comprises a second conveying belt 81, a second conveying pipe 82 and a second material guide plate 83, the second material guide plate 83 is located between the second conveying belt 81 and the second conveying pipe 82, the second material guide plate 83 is arranged from the second conveying belt 81 to the second conveying pipe 82 in a downward inclined mode, and one end, away from the second material guide plate 83, of the second conveying belt 81 is located at the second blanking opening 6.
As shown in fig. 2 and 3, in order to allow more smaller fragments to be transported out through the second transport assembly 8, the processing box 41 is rotatably connected with the stirring wheel 9, the stirring wheel 9 is located between the feed chute 42 and the first blanking ramp 43, and the rotation axis of the stirring wheel 9 is parallel to the first blanking ramp 43; a driving member 10 for driving the stirring wheel 9 to rotate is installed outside the treatment box 41. In this embodiment, a mounting frame (not labeled in the drawing) is welded and fixed on the outer side wall of the processing box 41, the driving member 10 is a waterproof motor, the waterproof motor is fixed on the mounting frame by bolts, and an output shaft of the waterproof motor passes through the mounting frame and is fixed with a rotating shaft of the stirring wheel 9 by adopting a key connection mode. The agitator wheel 9 can be rotated by starting the waterproof motor, so that fragments falling above the first blanking ramp 43 can be stirred conveniently, so that more smaller fragments pass through the distributing holes 45 to fall onto the second blanking ramp 44, and the conveying efficiency of the rock debris fragments is improved.
As shown in fig. 2 and 3, in order to crush fragments in the processing tank 41, the processing tank 41 is rotatably connected with crushing wheels 11, two crushing wheels 11 are provided, and the two crushing wheels 11 are respectively positioned at two sides of the stirring wheel 9. The crushing wheel 11 is positioned between the feed chute 42 and the first blanking slope plate 43, and the rotating shaft of the crushing wheel 11 is parallel to the rotating shaft of the stirring wheel 9; a driving gear 12 is fixed on the rotating shaft of the stirring wheel 9 in a key connection mode, and a driven gear 13 meshed with the driving gear 12 is fixed on the rotating shaft of the crushing wheel 11 in a key connection mode. Wherein, the driving gear 12 and the driven gear 13 are both positioned outside the processing box 41, and the number of teeth of the driven gear 13 is less than that of the driving gear 12.
It should be noted that, the crushing wheel 11 may crush fragments falling above the first blanking ramp 43, so that smaller fragments account for more; meanwhile, the driving gear 12 is matched with the driven gear 13, so that the rotation directions of the crushing wheel 11 and the stirring wheel 9 are opposite, namely, fragments carried by the stirring wheel 9 are opposite to the rotation directions of the crushing wheel 11, and the crushing effect of the crushing wheel 11 on the fragments is better; the number of teeth of the driving gear 12 is more than the number of teeth of the driven gear 13, so that the rotation of the crushing wheel 11 is more labor-saving. Thus, more smaller pieces will be discharged through the second conveyor assembly 8, improving the conveying efficiency.
As shown in fig. 2 and 3, in order to allow the fragments on the second blanking ramp 44 to roll, the surface of the second blanking ramp 44 remote from the first blanking ramp 43 is bolted with a vibration member 14. In this embodiment, the vibration member 14 adopts a vibration motor, and the second blanking ramp 44 can vibrate through the vibration motor, so as to reduce the situation that the fragments adhere to the second blanking ramp 44, and further, the fragments can be better moved from the second blanking port 6 to the second conveying assembly 8 for discharging.
As shown in fig. 1 and 4, in order to improve the cutting effect of the cutter on the machine head 2 on soil, a circulating water injection mechanism is installed in the machine body 1, the circulating water injection mechanism comprises a water injection pipe 15 and a water tank 22, one end of the water injection pipe 15 is located at the machine head 2, the other end of the water injection pipe 15 is located in the water tank 22, and the water tank 22 is located outside a tunnel. Wherein, the water injection pipe 15 is located the one end of aircraft nose 2 and installs three water injection shower nozzle (not marked in the figure), and three water injection shower nozzle is along aircraft nose 2 circumference array distribution, and the inner wall that the three water injection shower nozzle all is located the machine body towards aircraft nose 2. In this embodiment, water is introduced into the water injection nozzle through the water tank 22 and the water injection pipe 15, and water injected from the water injection nozzle acts on the head 2 of the shield machine, so that the construction efficiency of the shield machine can be improved.
As shown in fig. 4 and 5, in order to avoid clogging of the water injection pipe 15 and the water injection nozzle, a filter screen 16 is rotatably connected to one end of the water injection pipe 15 located in the water tank 22. Wherein, annular guide slot 20 has been seted up to the inner wall of water injection pipe 15, and the outer wall integrated into one piece of drum body 161 has the turning block 21 with guide slot 20 sliding fit. The water introduced into the water injection pipe 15 and the water injection nozzle can be filtered through the filter screen 16, so that the blocking condition of the water injection pipe 15 and the water injection nozzle is reduced, and the shield machine can work normally; meanwhile, the rotating block 21 is matched with the guide groove 20, so that the rotation of the filter screen 16 can be guided.
As shown in fig. 4 and 5, to clean the surface of filter screen 16, the water injection pipe 15 is provided with a flushing assembly 18 for flushing impurities on the filter screen 16, and the flushing assembly 18 comprises a flushing nozzle 181 and a water delivery member. The water delivery piece adopts a water delivery pipe 182, the water delivery pipe 182 penetrates through the pipe wall of the water injection pipe 15, and tap water can be connected to one end of the water delivery pipe 182, which is positioned outside the water injection pipe 15; the flushing nozzle 181 is fixed at one end of the water pipe 182 located in the water injection pipe 15 in a threaded connection manner, and the flushing nozzle 181 faces the inner wall of the filter screen 16. In this embodiment, when the filter screen 16 is blocked, water is delivered to the flushing nozzle 181 through the water delivery pipe 182, and then the flushing nozzle 181 flushes the water onto the inner wall of the filter screen 16, so as to flush the impurities on the filter screen 16 from inside to outside, thereby realizing automatic cleaning of the filter screen 16.
As shown in fig. 4 and 5, for better cleaning the surface of the filter screen 16, a power assembly 17 for driving the filter screen 16 to rotate to throw off impurities on the filter screen 16 is further mounted on the water injection pipe 15, and the power assembly 17 includes a plurality of power spray heads 173. The water pipe 182 is communicated with a branch pipe 19, the branch pipe 19 is an annular water pipe, and the branch pipe 19 is positioned in the water injection pipe 15. The four power spray heads 173 are distributed on the branch pipe 19 in a circumferential array, and water can be simultaneously conveyed to the flushing spray heads 181 and the power spray heads 173 through the water conveying pipe 182.
As shown in fig. 4 and 5, the filter screen 16 includes a cylindrical body 161, a plurality of force applying grooves 171 with evenly distributed circumferences are formed on the side surface of the cylindrical body 161, four force applying grooves 171 are formed, and drain holes 172 communicated with the four force applying grooves 171 are respectively formed on the inner wall of the cylindrical body 161; the four power nozzles 173 face the four urging grooves 171, respectively. The force application groove 171 is an arc-shaped groove concentric with the cylinder body 161, the depth of the force application groove 171 increases gradually, and the drain hole 172 is positioned at the bottom of the deepest depth of the force application groove 171. In this embodiment, when the filter screen 16 is blocked, the power nozzle 173 sprays water to the bottom of the force applying groove 171, so that a rotating force is applied to the filter screen 16 through the bottom of the force applying groove 171, and the filter screen 16 is driven to rotate, so that the impurities adhered to the filter screen 16 are thrown away under the action of centrifugal force, and the filter screen 16 is automatically cleaned.
The implementation principle of the construction device of the shield tunnel in the embodiment of the application is as follows: the machine head 2 is driven to rotate by the driving motor, and soil on the tunnel is peeled off by a cutter on the machine head 2. The peeled fragments are then conveyed into the processing box 41 by the screw conveyor 3. Starting a waterproof motor to enable the stirring wheel 9 and the crushing wheel 11 in the treatment box 41 to rotate, and stirring and crushing fragments falling above the first blanking slope plate 43; wherein the fragments with larger particle size will roll downwards along the first blanking ramp 43, roll onto the first conveyor 71 through the first blanking port 5, and discharge the fragments with larger particle size out of the tunnel through the first conveyor pipe 72. Fragments with smaller particle sizes can fall onto the second blanking slope plate 44 through the material distributing holes 45, then the vibration motor is started to enable the fragments with smaller particle sizes to roll downwards along the second blanking slope plate 44, then the fragments with smaller particle sizes roll onto the second conveying belt 81 through the second material distributing holes 6, and the fragments with smaller particle sizes are discharged out of the tunnel through the second conveying pipe 82. When the driving motor drives the machine head 2 to rotate, water is introduced into the water injection nozzle through the water injection pipe 15, and water sprayed by the water injection nozzle acts on the machine head 2 of the shield machine, so that the construction efficiency of the shield machine is better.
The embodiment of the application also discloses a construction method of the shield tunnel, which comprises the following steps:
s1, completing assembly of the shield machine at the bottom of the starting well, and injecting water into a machine head 2 of the shield machine through a circulating water injection mechanism.
Step S2, the broken pieces generated in the working process of the machine head 2 are conveyed into the processing box 41 by the screw conveyor 3.
Step S3, the driving piece 10 works to drive the stirring wheel 9 and the crushing wheel 11 to rotate, and fragments positioned above the first blanking slope plate 43 in the processing box 41 are crushed through the stirring wheel 9 and the crushing wheel 11.
Step S4, the vibration piece 14 works to drive the second blanking slope plate 44 to vibrate, fragments are discharged out of the treatment box 41 from the second blanking slope plate 44, and then the fragments are conveyed out of the tunnel through the first conveying assembly 7 and the second conveying assembly 8.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (10)
1. The construction device of the shield tunnel is characterized by comprising a machine body (1), a machine head (2) and a fragment processing mechanism, wherein the fragment processing mechanism is arranged in the machine body (1); the fragment treatment mechanism comprises a screw conveyor (3) and a fragment layering assembly (4), wherein a feed inlet of the screw conveyor (3) is positioned at the machine head (2); the broken piece layering assembly (4) comprises a processing box (41), a feeding groove (42) positioned below a discharge hole of the screw conveyor (3) is formed in the processing box (41), a first blanking slope plate (43) and a second blanking slope plate (44) are arranged in the processing box (41), the second blanking slope plate (44) is positioned below the first blanking slope plate (43), and a plurality of distributing holes (45) are formed in the first blanking slope plate (43); the side wall of the treatment box (41) is provided with a first blanking opening (5), and the first blanking opening (5) is positioned at the joint of the treatment box (41) and the bottom end of the first blanking slope plate (43); the side wall of the treatment box (41) is provided with a second blanking opening (6), and the second blanking opening (6) is positioned at the joint of the treatment box (41) and the bottom end of a second blanking slope plate (44); the automatic feeding machine is characterized in that a first conveying assembly (7) communicated with the first discharging opening (5) is arranged in the machine body (1), and a second conveying assembly (8) communicated with the second discharging opening (6) is also arranged in the machine body (1).
2. Construction equipment for a shield tunnel according to claim 1, characterized in that the treatment box (41) is rotatably connected with a stirring wheel (9), the stirring wheel (9) is located between the feed chute (42) and the first blanking ramp (43), and the rotation axis of the stirring wheel (9) is parallel to the first blanking ramp (43); a driving piece (10) for driving the stirring wheel (9) to rotate is arranged outside the processing box (41).
3. Construction equipment for a shield tunnel according to claim 2, characterized in that the treatment box (41) is rotatably connected with a crushing wheel (11), the crushing wheel (11) is located between the feed chute (42) and the first blanking ramp (43), and the rotation axis of the crushing wheel (11) is parallel to the rotation axis of the stirring wheel (9); a driving gear (12) is arranged on the rotating shaft of the stirring wheel (9), and a driven gear (13) meshed with the driving gear (12) is arranged on the rotating shaft of the crushing wheel (11).
4. A construction equipment for a shield tunnel according to claim 1, 2 or 3, characterized in that the surface of the second blanking ramp (44) remote from the first blanking ramp (43) is provided with vibration elements (14).
5. The construction device of the shield tunnel according to claim 1, wherein a circulating water injection mechanism is arranged in the machine body (1), the circulating water injection mechanism comprises a water injection pipe (15), one end of the water injection pipe (15) is positioned at the machine head (2), and a filter screen (16) is rotatably connected with the other end of the water injection pipe (15); the water injection pipe (15) is provided with a power assembly (17) for driving the filter screen (16) to rotate so as to throw away impurities on the filter screen (16), and the water injection pipe (15) is also provided with a flushing assembly (18) for flushing away the impurities on the filter screen (16).
6. Construction equipment for a shield tunnel according to claim 5, characterized in that the flushing assembly (18) comprises a flushing nozzle (181) and a water delivery member, the flushing nozzle (181) being mounted in the water injection pipe (15) and facing the inner wall of the filter screen (16), the water delivery member being adapted to deliver water to the flushing nozzle (181).
7. The construction device of a shield tunnel according to claim 6, wherein the filter screen (16) comprises a cylinder body (161), a plurality of circumferentially uniformly distributed force application grooves (171) are formed in the side surface of the cylinder body (161), and drain holes (172) communicated with the plurality of force application grooves (171) are formed in the inner wall of the cylinder body (161); the power assembly (17) comprises a plurality of power spray heads (173), the power spray heads (173) are arranged in the water injection pipe (15) and face to the force application grooves (171) respectively, the depth of the force application grooves (171) is gradually increased, and the drain holes (172) are arranged at the bottoms of the force application grooves (171).
8. The construction method of the shield tunnel according to claim 7, wherein the water delivery member comprises a water delivery pipe (182), the water delivery pipe (182) penetrates through the pipe wall of the water injection pipe (15), and the flushing nozzle (181) is communicated with one end of the water delivery pipe (182) positioned in the water injection pipe (15); the water delivery pipe (182) is communicated with the branch pipes (19), and a plurality of power spray heads (173) are distributed on the branch pipes (19) in a circumferential array.
9. The construction method of the shield tunnel according to claim 7 or 8, wherein an annular guide groove (20) is formed in the inner wall of the water injection pipe (15), and a rotating block (21) which is in sliding fit with the guide groove (20) is arranged on the outer wall of the cylinder body (161).
10. The construction method of the shield tunnel is characterized by comprising the following steps of:
completing assembly of the shield machine at the bottom of the starting well, and injecting water into a machine head (2) of the shield machine through a circulating water injection mechanism;
the broken pieces generated in the working process of the machine head (2) are conveyed into a processing box (41) by a screw conveyor (3);
the driving piece (10) works to drive the stirring wheel (9) and the crushing wheel (11) to rotate, and fragments positioned above the first blanking slope plate (43) in the treatment box (41) are crushed through the stirring wheel (9) and the crushing wheel (11);
the vibration piece (14) works to drive the second blanking slope plate (44) to vibrate, fragments are discharged out of the treatment box (41) from the second blanking slope plate (44), and then the fragments are conveyed out of the tunnel through the first conveying assembly (7) and the second conveying assembly (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239478.9A CN116411969A (en) | 2023-03-08 | 2023-03-08 | Construction device and construction method for shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310239478.9A CN116411969A (en) | 2023-03-08 | 2023-03-08 | Construction device and construction method for shield tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116411969A true CN116411969A (en) | 2023-07-11 |
Family
ID=87050683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310239478.9A Pending CN116411969A (en) | 2023-03-08 | 2023-03-08 | Construction device and construction method for shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116411969A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906068A (en) * | 2023-09-13 | 2023-10-20 | 北京市市政四建设工程有限责任公司 | Slag discharging device for tunnel shield construction |
-
2023
- 2023-03-08 CN CN202310239478.9A patent/CN116411969A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906068A (en) * | 2023-09-13 | 2023-10-20 | 北京市市政四建设工程有限责任公司 | Slag discharging device for tunnel shield construction |
| CN116906068B (en) * | 2023-09-13 | 2023-12-01 | 北京市市政四建设工程有限责任公司 | Slag discharging device for tunnel shield construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111389498A (en) | Concrete waste recycling device and method | |
| CN112246793B (en) | Dredging device for removing blocking body of tunnel drain pipe | |
| CN116411969A (en) | Construction device and construction method for shield tunnel | |
| KR101243756B1 (en) | This material exclusion device of drainpipe interior and exclusion engineering method | |
| CN116220726B (en) | Rock mass tunneling and broken stone cleaning and transporting equipment for tunnel construction | |
| CN203853329U (en) | Oil-removing, washing, scrap-removing, rust-preventing and oiling all-in-one machine for nuts | |
| CN109909053B (en) | Sand and stone separation cleaning equipment | |
| CN108787092B (en) | Construction waste treatment equipment and construction waste regeneration system | |
| WO2019128922A1 (en) | Cutter disk for vertical shaft sinking | |
| CN111451257B (en) | Soil treatment sprinkler | |
| CN214184424U (en) | Dredging device for clearing blocking body of tunnel drain pipe | |
| KR102467735B1 (en) | Waste concrete treatment Apparatus | |
| CN217536814U (en) | Waste recovery device for highway construction | |
| CN106820227A (en) | Feed is beaten cleaning plant | |
| CN215612995U (en) | Sand and stone separator with dustproof function | |
| CN110586241B (en) | Dustless crushing apparatus is used in building rubbish processing | |
| CN114535268A (en) | Building residue soil recycling method and recycling system thereof | |
| CN113289723A (en) | Multifunctional feeder | |
| CN217755960U (en) | Concrete grit piece-rate system | |
| CN214262135U (en) | Waste residue recovery unit of public road bridge roof beam construction usefulness | |
| CN215087550U (en) | Sandstone feeding machine | |
| CN220547014U (en) | Pulverizer with dust removal structure | |
| CN216181948U (en) | Rubber product processing waste treatment device | |
| CN219804315U (en) | Device for separating solid waste from waste liquid | |
| CN220284515U (en) | Soft soil roadbed treatment pumping equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |