CN115306414B - Slag stone salvaging device of shield tunneling machine and using method of slag stone salvaging device - Google Patents
Slag stone salvaging device of shield tunneling machine and using method of slag stone salvaging device Download PDFInfo
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- CN115306414B CN115306414B CN202210816272.3A CN202210816272A CN115306414B CN 115306414 B CN115306414 B CN 115306414B CN 202210816272 A CN202210816272 A CN 202210816272A CN 115306414 B CN115306414 B CN 115306414B
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- stone
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- 239000002893 slag Substances 0.000 title claims abstract description 220
- 239000004575 stone Substances 0.000 title claims abstract description 175
- 230000005641 tunneling Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012216 screening Methods 0.000 claims abstract description 131
- 239000002002 slurry Substances 0.000 claims abstract description 93
- 238000009412 basement excavation Methods 0.000 claims abstract description 68
- 238000005192 partition Methods 0.000 claims abstract description 20
- 238000007599 discharging Methods 0.000 claims description 42
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000011010 flushing procedure Methods 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000007790 scraping Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 238000007873 sieving Methods 0.000 description 6
- 239000011440 grout Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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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
- E21D9/06—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
- E21D9/087—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 with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
-
- 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
- E21D9/06—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 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
- E21D9/06—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
- E21D9/0657—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 structurally associated with rock crushers
-
- 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
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)
- Architecture (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application discloses a slag stone salvaging device of a shield tunneling machine and a using method thereof, comprising the following steps: the device comprises a shield host, a circulation system and a screening device; the shield host comprises at least: a shield body and a cutter head; the cutter head is arranged on the end face of the shield main machine, a baffle plate is further arranged on the end face of the shield body facing the cutter head, an excavation bin is arranged between the baffle plate and the cutter head, and slurry and slag stone generated by excavation can fall into the excavation bin; a broken stone bin is arranged between the shield body and the partition plate, the broken stone bin is communicated with the excavation bin, and the broken stone bin can grind slag stones. The input end of the circulation system is communicated with the excavation bin, the output end of the circulation system is communicated with the broken stone bin, and the slurry passing through the broken stone bin is discharged by the output end of the circulation system. The screening system is fixedly connected inside the shield host and is respectively communicated with the excavation bin and the output end of the circulation system. The circulation system can drive slurry to flow with slag stones, and the cutterhead sends the slag stones in the excavation bin to the screening device. The screening device screens the slag and discharges the screened slag to the outside of the circulation system.
Description
Technical Field
The application relates to the technical field of tunnel construction, in particular to a slag stone salvaging device of a shield tunneling machine and a using method thereof.
Background
The shield method is widely applied to underground tunnel construction projects because of the construction advantages of safety, environmental protection, high efficiency and the like. However, along with the rapid development of the ultra-large diameter tunnel and the requirement on intensive utilization of resources, the stratum traversed by the planned tunnel line is more complex and variable, the grading change range of the slag stone in the stratum is more and more wide, and the small-grain-size stones and the large-grain-size pebbles are staggered. On the one hand, a large amount of large-particle-size slag Dan Shichang is discharged untimely to cause low siltation bin and influence the deslagging efficiency, and on the other hand, the large-particle-size slag stone enters the broken stone bin to increase the work load of the crusher in the broken stone bin and reduce the service life of the crusher.
The existing structure has the following disadvantages: firstly, the safety excavation and the high-efficiency slag discharge of the large-diameter slurry balance shield cannot be dealt with; secondly, when the slag stone with larger/large grain size is crushed, the workload is increased, the crushing effect is weaker, and the efficiency is lower; thirdly, the requirement of rapid salvaging of large-particle-size slag stones in a large-diameter shield excavation bin cannot be met.
Therefore, how to provide a device for solving the problem of difficult salvaging of slag stones of a shield machine is a problem to be solved by the person skilled in the art.
Disclosure of Invention
The application aims to provide a salvaging device capable of rapidly salvaging slag stones in a shield tunneling machine and a using method of the salvaging device.
In order to achieve the above purpose, the application provides a slag stone salvaging device of a shield tunneling machine, comprising: the device comprises a shield host, a circulation system and a screening device;
The shield main machine comprises: the device comprises a shield host, a circulation system and a screening device;
The shield main machine comprises: the cutter comprises a shield body and a cutter head arranged on the end face of the shield body; the end face of the shield body, which faces the cutter head, is provided with a baffle plate, an excavation bin is arranged between the baffle plate and the cutter head, a broken stone bin is arranged between the baffle plate and the shield body, the broken stone bin is communicated with the excavation bin, and the broken stone bin is used for crushing part of slag stones sent into the broken stone bin by the excavation bin;
The input end of the circulation system is communicated with the excavation bin, and the output end of the circulation system is communicated with the broken stone bin; the screening device is respectively communicated with the excavation bin and the output end of the circulation system;
The circulation system controls slurry to flow in the shield main machine so as to drive slag stones to move;
the screening device is fixedly connected inside the shield main machine, and the cutter head is used for conveying slag stones in the excavation bin into the screening device; the screening device is used to separate the slag and discharge it out of the circulation system.
In some embodiments, the surface of the cutter disc facing the baffle plate is uniformly provided with slag scraping hoppers along the circumferential direction, and the surface of the baffle plate facing the cutter disc is provided with a guide plate;
the slag scraping hopper rotates along with the cutterhead so as to collect slag stones in the excavation bin; the guide plate is used for guiding the slag stones collected by the slag scraping hopper into the screening device.
In some embodiments, a screening apparatus includes: a slag collecting hopper and screening box assembly; the slag collecting hopper is arranged in the excavation bin and penetrates through the partition plate to be communicated with one end of the screening box assembly;
The bottom of the screening box assembly is respectively communicated with the output end of the circulation system and the slag receiving device; the slag receiving device is used for receiving slag stones screened out by the screening box assembly.
In some embodiments, a screening box assembly includes: the screening device comprises a box body, a screening cylinder and a driver; the screening cylinder is arranged in the box body along the length direction of the box body, the first end of the box body is communicated with the slag collecting hopper, and the second end of the box body is provided with a driver; the driver is used for driving the screening cylinder to rotate relative to the axis of the driver so as to screen the slag stones.
In some embodiments, the sieving cartridge comprises: a filter cartridge and a drive disk disposed on an extension of the cartridge axis;
the driving disc is connected with the filter cylinder through the reinforcing ribs and is connected with the driver for transmission; a falling stone hole is formed between the end face of the filter cylinder and the driving disc, and the driving disc is used for driving the filter cylinder to rotate and screen slag stones which fall into the slag receiving device from the falling stone hole.
In some embodiments, the input of the loop system comprises: the slurry inlet pipe is used for inputting slurry and is communicated with the excavation bin;
The output of the loop system comprises: a slurry discharge pipe, a quarrying tank and an integrated circulation pump; the first end of the slurry discharging pipe is communicated with the crushed stone bin, the second end of the slurry discharging pipe is communicated with the integrated circulating pump, and the integrated circulating pump is used for providing power of circulating slurry; the quarrying box is arranged between the slurry discharging pipe and the integrated circulation pump for collecting slag stone
In some embodiments, further comprising: the wiper mechanism for clean screening case assembly, wiper mechanism includes: a flushing pipe, a flushing tee joint and a pressure relief pipe;
The flushing tee joint is respectively communicated with the flushing pipe, the pressure relief pipe and the top of the screening box assembly.
The application method of the shield machine slag stone salvaging device is applied to the shield machine slag stone salvaging device of any one of the above steps, and comprises the following steps:
step one: the cutter head rotates to excavate the excavation surface, two ends of the screening device are communicated, the slurry discharging pipe is communicated with the crushed stone bin, the cleaning mechanism is closed, and the driver is started to drive the screening cylinder to rotationally screen;
Step two: the slurry inlet pipe inputs slurry into the excavation bin, the slurry and the slag stone are mixed into slag slurry, the cutter head rotates to drive the slag scraping hopper to scrape the slag stone, the slag stone falls onto the guide plate after the slag scraping hopper rotates to a certain height, and slides into the slag collecting hopper along the surface of the guide plate; meanwhile, the residual slurry enters a stone crushing bin for stone crushing and stirring under the operation of a circulation system, and is then discharged into a stone collecting box through a slurry discharging pipe;
Step three: the slag stones in the slag collecting hopper enter a screening device, the screening cylinder is controlled to rotate, and the slag stones are screened according to the volume; the screened slag slurry flows out of the slurry discharging pipe, and slag stones are reserved;
Step four: the method comprises the steps of monitoring an output torque value of a driver in real time, judging that slag stones with set volume are collected in a screening device when the monitored torque value is larger than or equal to a torque set value, controlling the screening device to be disconnected from an excavation bin at the moment, and starting a cleaning mechanism to clean a screening cylinder;
step five: after the screening cylinder is cleaned, suspending the cleaning operation of the cleaning mechanism, monitoring the height of the slag slurry level in the screening device, controlling the screening device to be disconnected with the slurry discharging pipe when the liquid level surface is lowered to a set value, controlling the cleaning mechanism to release pressure until the pressure is released to a set pressure value, communicating the slag receiving device with the lower part of the box body, and rotating the screening device to continue to operate until all slag stones in the screening device fall into the slag receiving device, and transporting the slag stones out of the tunnel through an auxiliary system;
Step six: and (3) disconnecting the slag receiving device from the box body, and repeating the steps one to five until the tunnel excavation slag discharge is completed.
In some embodiments, when overhauling the crushed stone bin, the communication between the excavation bin and the crushed stone bin is disconnected, the cleaning mechanism is kept closed, other parts normally operate, slag stones and slag slurry directly enter the screening device from the excavation bin, and flow into the output end of the circulation system after screening.
Compared with the background art, the application is provided with a shield host, a circulation system and a screening device; the shield main machine comprises: the device comprises a baffle plate, a shield body and a cutter head; the cutter head is arranged on the end face of the shield body, and the partition plate is arranged between the shield body and the cutter head; an excavation bin is arranged between the partition plate and the cutter head, and slurry and slag stones generated by excavating a tunnel by the shield tunneling machine can fall into the excavation bin; a broken stone bin is arranged between the partition plate and the shield body, the broken stone bin is communicated with the excavation bin, and the broken stone bin can crush slag stones in slurry. The output end of the circulation system is communicated with the excavation bin, the output end of the circulation system is communicated with the gravel bin, and the slurry mixture passing through the gravel bin returns to the output end of the circulation system. The screening system is fixedly connected inside the shield host and is respectively communicated with the excavation bin and the output end of the circulation system. The circulation system can drive slurry to flow with slag stones, and the cutterhead sends the slag stones in the excavation bin to the screening device. The screening device screens the slag and discharges the screened slag to the outside of the circulation system. The application realizes the rapid salvaging and discharging of the slag stones in the shield machine and prolongs the service life of the equipment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a slag stone salvaging device of a shield tunneling machine provided by an embodiment of the application;
FIG. 2 is a schematic view of the relative positions of section A-A of FIG. 1;
FIG. 3 is a schematic view of the relative positions of sections B-B of FIG. 1;
fig. 4 is a schematic structural diagram of a partition plate with a cutterhead removed and structures on two sides of the partition plate according to an embodiment of the present application;
FIG. 5 is a schematic view of a screening apparatus according to an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a screening apparatus according to an embodiment of the present application;
FIG. 7 is a schematic view of a sieving cartridge according to an embodiment of the present application;
FIG. 8 is a schematic view of a screening apparatus according to an embodiment of the present application in cross-section for screening gangue;
Fig. 9 is a schematic diagram of an auxiliary slag discharging flow when the slag stone salvaging device of the shield machine is overhauled in a bin.
Wherein:
01-excavation bin, 02-slag receiving device, 1-slag collecting bucket, 2-slag discharging pipe, 3-first gate, 4-screening device, 41-box, 42-front end plate, 43-screening cylinder, 44-rear end plate, 45-driver, 46-slurry discharging port, 47-slag discharging port, 48-flushing tee, 49-pressure releasing pipe, 410-flushing port, 431-driving disc, 432-reinforcing rib, 433-filter cylinder, 434-spiral belt, 5-second gate, 6-slag scraping bucket, 7-shield host, 71-shield body, 72-cutter head, 73-stone crusher, 711-baffle, 712-stone crusher bin, 8-circulation system, 81-slurry discharging pipe, 82-stone collecting box, 83-integrated circulation pump, 84-slurry inlet pipe, 85-flushing pipe, 86-first valve, 87-communicating pipe, 88-second valve, 89-flushing pipe and 9-guide plate.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.
Referring to fig. 1 of the specification, fig. 1 is a schematic structural diagram of a slag stone salvaging device of a shield tunneling machine according to an embodiment of the present application, including: a shield main machine 7, a circulation system 8 and a screening device 4; wherein the shield main machine 7 comprises: a shield body 71 and a cutter head 72; the cutter head 72 is mounted on the end face of the shield body 71, and a partition 711 is arranged on the end face of the shield body 71 facing the cutter head 72; an excavation bin 01 is arranged between the partition 711 and the cutter head 72, and slurry and slag stone generated by excavating a tunnel by the shield tunneling machine can fall into the excavation bin 01; a broken stone bin 712 is arranged between the partition plate 711 and the shield body 71, and the broken stone bin 712 is arranged at one side of the lower part of the partition plate 711. A slurry door is arranged between the gravel bin 712 and the excavation bin 01, the slurry door can be controlled to be opened to enable slurry and slag stones in the excavation bin 01 to enter the gravel bin 712, and a stone crusher 73 is arranged at the bottom of the gravel bin 712 and used for crushing the slag stones in the slurry. The input end of the circulation system 8 is communicated with the upper part of the excavation bin 01, the output end of the circulation system 8 is communicated with the crushed stone bin 712, and the slurry passing through the crushed stone bin 712 is discharged to the outside by the output end of the circulation system 8.
The screening device 4 is fixedly connected inside the shield main machine 7 and is respectively communicated with the excavation bin 01 and the output end of the circulation system 8. The circulation system 8 can convey slurry from the input end to the inside of the shield main machine 7, and drive slurry to mix and drive slurry and slag to flow, meanwhile, the cutter head 72 rotates in the excavating process to convey large-volume slag in the excavating bin 01 into the screening device 4, so that the slag entering the broken stone bin 712 from the excavating bin 01 is ensured not to be too large, the work load of the broken stone machine 73 is reduced, and the service life of equipment is prolonged. On the other hand, the slurry and gangue mixture entering the screening device 4 will be subjected to a screening operation of the gangue and slurry by the screening device 4 according to the volume of the gangue, and the screened gangue will be discharged outside the circulation system 8, so that the slurry will be returned to the circulation system 8 again.
The specific structure and arrangement of the shield body 71, the partition 711, the cutterhead 72, the excavation chamber 01 and the gravel chamber 712 of the shield main machine 7 can refer to the prior art, and will not be described in detail herein.
Further, referring to fig. 2 to fig. 4 of the specification, fig. 2 is a schematic view of a section A-A of fig. 1, fig. 3 is a schematic view of a section B-B of fig. 1, and fig. 4 is a schematic view of a structure of a partition plate with a cutterhead removed and two side structures thereof according to an embodiment of the present application, including: the surface of the cutter head 72 facing the partition plate 711 is uniformly provided with slag scraping hoppers 6 along the circumferential direction, and the surface of the partition plate 711 facing the cutter head 72 is provided with a guide plate 9; the slag scraping hopper 6 rotates along with the cutter head 72, most of slag stones in the excavation bin 01 are collected in the rotating process, the collected slag stones fall on the guide plate 9 along the falling direction, and the slag stones are directly guided into the screening device 4 by the guide plate 9.
A plurality of filtering holes are formed in the side plate corresponding to the slag scraping hopper 6, so that when the slag stones with large particle sizes are salvaged, the residual slag slurry is filtered.
Further, referring to fig. 5 to 8 of the specification, fig. 5 is a schematic structural diagram of a screening device according to an embodiment of the present application, fig. 6 is a schematic sectional view of a screening device according to an embodiment of the present application, fig. 7 is a schematic structural diagram of a screening cylinder according to an embodiment of the present application, and fig. 8 is a schematic sectional view of a screening device according to an embodiment of the present application when screening slag stones, including: the screening device 4 comprises a slag collecting hopper 1 and a screening box assembly; the slag collecting hopper 1 is arranged in the excavation bin 01, and an opening of the slag collecting hopper faces to the bottom end of the guide plate 9; the output end of the slag collecting hopper 1 penetrates through the partition 711 through the slag discharging pipe 2 to be connected to one end of the screening box assembly, and the slag discharging pipe 2 is provided with a first gate 3. The bottom of the screening box assembly is respectively communicated with the output end of the circulation system 8 and the slag receiving device 02, and the slag receiving device 02 is used for receiving the slag stones discharged by screening. The lower part of the middle section of the screening device 4 is provided with a slurry discharge port 46 communicated with a communicating pipe 87 in the circulation system 8, and the lower part of the rear section of the screening device 4 is provided with a slag discharge port 47 bolted with the second gate 5;
The bottom of the slag collecting hopper 1 and the vertical surface of the partition plate 711 form a certain included angle, so that slag stones can smoothly roll into the slag discharging holes.
Further, the above-mentioned screening box assembly includes: a box 41, a sieving cartridge 43 and a driver 45; the screening cylinder 43 is arranged in the box 41 along the length direction, and the front end plate 42 and the rear end plate 44 limit the two ends of the screening cylinder 43; the front end plate 42 of the box 41 is communicated with the slag discharging pipe 2, and the slag-stone slurry mixture collected by the slag collecting hopper 1 directly enters the screening cylinder 43; the rear end plate 44 of the case 41 is provided with the driver 45, and the driver 45 penetrates the rear end plate 44 and drives the sieving cylinder 43 to rotate relative to the axis thereof, thereby sieving the slag. The middle section lower part of the box 41 is provided with a pulp discharging port 46, the rear section lower part is provided with a slag discharging port 47, the pulp discharging port 46 is communicated with the pulp discharging pipe 81 through a second valve 88 and a communicating pipe 87, and the slag discharging port is fixedly connected with the second gate 5.
Further, the sieving cylinder 43 includes a filter cylinder and a drive disk 431 disposed on an extension of the axis of the filter cylinder; the driving disc 431 is connected to the outside of the filter cartridge through a reinforcing rib 432, and one side of the driving disc 431 facing away from the filter cartridge is connected to the driver 45 through a driving shaft end, and the driver 45 drives the driving disc 431 and the filter cartridge to rotate synchronously. On the end face of the cartridge facing the drive disk 431, a screw band 434 is provided for a firm connection, the screw band 434 being welded to the inner wall of the cartridge 433, the longitudinal section of which allows passage of a size not smaller than the maximum size of the slag stone
The reinforcing ribs 432 are welded at 120 ° to each other on the outside of the filter cartridge 433, and one end portion thereof is fixedly welded to the drive shaft end in a coaxial manner.
A falling stone hole is formed between the filter cartridge and the driving disc 431, and slag stones left by screening the filter cartridge fall into the slag receiving device 02 from the falling stone hole. The length of the falling stone hole, namely the distance from the slag falling end of the filter cylinder 433 to the driving shaft end is H, and the H is more than or equal to the maximum size of the slag stone.
The driver 45 monitors the output torque in real time by the control system.
The filter cartridge 433 has a plurality of holes d smaller than the diameter of the communicating pipe 87.
Further, the input of the above-mentioned loop system 8 comprises: a slurry inlet pipe 84 communicated with the excavation bin 01, and slurry is input into the excavation bin 01 through the slurry inlet pipe 84; the output of the loop system 8 comprises: a pulp discharge pipe 81, a quarrying tank 82 and an integrated circulation pump 83; the first end of the slurry discharging pipe 81 is communicated with the crushed stone bin 712, the second end is communicated with the integrated circulation pump 83, the integrated circulation pump 83 is used for providing power for directionally conveying slurry, and the stone collecting box 82 is arranged between the slurry discharging pipe 81 and the integrated circulation pump 83, so that fine slag stones in the mixed slurry are collected and filtered in the last step.
Further, referring to fig. 9 of the specification, fig. 9 is a schematic diagram of an auxiliary slag discharging flow when the slag stone salvaging device of the shield tunneling machine provided by the embodiment of the application is overhauled in a cabin, and the auxiliary slag discharging flow comprises: above-mentioned shield constructs quick-witted sediment stone fishing device still includes: the cleaning mechanism, above-mentioned cleaning mechanism includes: a flush tube 85, a flush tee 48, and a pressure relief tube 49; the flushing tee 48 is connected to the flushing pipe 85, the pressure relief pipe 49 and the top of the screen box assembly. The upper part of the front end of the box body 41 is provided with a flushing port 410 communicated with a flushing tee 48 and a pressure relief pipe 49, and the flushing tee 48 is correspondingly provided with a flushing valve, a pressure relief valve, a pressure monitoring device and the like
The application method of the slag stone salvaging device of the shield tunneling machine comprises the following steps:
Step one: the cutter head 72 rotates to excavate the excavation surface, two ends of the screening device 4 are communicated, the slurry discharging pipe 81 is communicated with the crushed stone bin 712, the cleaning mechanism is closed, and the driver 45 is started to drive the screening cylinder 43 to rotationally screen.
Specific: the shield tunneling machine cutterhead 72 continuously rotates to stably excavate an excavation surface, the circulation system 8 operates normally, the first gate 3 and the second valve 88 are sequentially opened, the excavation bin 01 is communicated with the slurry discharging pipe 81, the flushing valve, the pressure relief valve and the like are kept closed, and the driver 45 is started to drive the screening cylinder 43 to rotate.
Step two: the slurry inlet pipe 84 inputs slurry into the excavation bin 01, the slurry and the slag stone are mixed into slag slurry, the cutter head 72 rotates to drive the slag scraping hopper 6 to scrape the slag stone, after the slag scraping hopper 6 rotates to a certain height, the slag stone falls onto the guide plate 9 and slides into the slag collecting hopper along the surface of the guide plate 9; meanwhile, the residual slurry enters a stone crushing bin 712 for stone crushing and stirring under the operation of the circulation system 8, and is then discharged into a stone collecting box 82 through a slurry discharging pipe 81;
Specific: the excavated slag stones fall into the excavation bin 01 and are mixed with the grout supplied by the grout inlet pipe 84 to form slag grout, the large-grain-size slag stones are scraped by the slag scraping hopper 6 under the rotation of the cutter head 72, when the slag scraping hopper 6 rotates to a certain height, the large-grain-size slag stones fall back onto the slide guide plate from the slag falling end under the action of gravity, fall into the slag collecting hopper 1 under the limit of the slide guide plate, and meanwhile, the rest slag grout is discharged into the gravel bin under the action of the pump and the components, crushed by the stone crusher 73 and stirred, and then discharged into the quarrying box 82 through the grout outlet pipe 81.
Step three: the slag stones in the slag collecting hopper 1 enter the screening device 4, the screening cylinder 43 is controlled to rotate, and the slag stones are screened according to the volume; the screened slurry flows out of the slurry discharging pipe 81, and the slag stone is reserved;
Specific: the slag stones falling into the slag collecting hopper 1 enter the screening cylinder 43 of the screening device 4 through the slag discharging pipe 2 and the first gate 3, the screening cylinder 43 continuously rotates to screen out large-particle-size slag stones, slag slurry and small-particle-size slag stones, and the small-particle-size slag stones flow into the slurry discharging pipe 81 along with the slag slurry through the communicating pipe 87 and the second valve 88 to be discharged into the quarrying box 82, and the large-particle-size slag stones are continuously discharged into the rear section of the screening device 4.
Step four: the output torque value of the driver 45 is monitored in real time, when the monitored torque value is larger than or equal to a torque set value, slag stones with set volume quantity are collected in the screening device 4, at the moment, the screening device 4 is controlled to be disconnected from the excavation bin 01, and a cleaning mechanism is started to clean the screening cylinder 43;
specific: the output torque value of the driver 45 is monitored in real time through the monitoring system, when the monitored torque value Mt is larger than or equal to the torque set value M0, the large-particle-size slag stone with the set volume quantity V is collected in the screening device 4, the first gate 3 is controlled to be closed, the flushing valve is opened, the screening cylinder 43 is cleaned, and the time t is set.
Step five: after the screening cylinder 43 is cleaned, the cleaning operation of the cleaning mechanism is suspended, the height of the slurry liquid level in the screening device 4 is monitored, when the liquid level surface is lowered to a set value, the screening device 4 is controlled to be disconnected from the slurry discharging pipe 81, the cleaning mechanism is controlled to release pressure until the pressure is released to a set pressure value, the slag receiving device 02 is communicated with the lower part of the box 41, the rotary screening continues to operate until all slag stones in the screening device 4 fall into the slag receiving device 02, and the slag stones are transported out of a tunnel through an auxiliary system.
After the screening cylinder 43 is cleaned, the flushing valve is closed, the liquid level of slurry in the screening device 4 is monitored through the liquid level sensor, when the liquid level surface is lowered to a set value, the shield machine control system controls the second valve 88 to be automatically closed, simultaneously, the pressure release valve is opened to release pressure until the pressure is released to a set pressure value, the slag receiving device 02 is connected to the lower end of the second gate valve, the second gate valve is controlled to be opened, the rotary screening continues to operate until all large-particle-size slag stones in the screening device 4 fall into the slag receiving device 02, and the large-particle-size slag stones are transported out of a tunnel through the auxiliary lifting system.
Step six: and (3) disconnecting the slag receiving device 02 from the box body, and repeating the steps one to five until the tunnel excavation slag discharge is completed.
Specific: and closing the second gate, and repeating the steps one to five until the excavation and deslagging of the planned tunnel are completed.
Further, when overhauling the crushed stone bin 712, the communication between the excavation bin 01 and the crushed stone bin 712 is disconnected, the cleaning mechanism is kept closed, other parts normally operate, and slag stones and slag slurry directly enter the screening device 4 from the excavation bin 01 and flow into the output end of the circulation system 8 after being screened.
Specific: when maintenance operation is needed in the crushed stone bin, the device can start an auxiliary slag discharging mode, namely, a slurry door, a crusher 73, a first valve 86, a second valve 5, a flushing valve, a pressure release valve and the like are closed, the first valve 3 and the second valve 88 are opened, other parts operate normally, slag stones excavated by the cutter head 72 are directly discharged into the screening device 4 from the excavation bin 01 through the invention, large-particle-size slag stones are screened through rotation and are temporarily stored in the screening device 4, and residual slag slurry (containing small-particle-size slag stones, slurry and the like) enters the slurry discharging pipe 81 from the communicating pipe 87 and is discharged to a set position through the circulation system 8.
It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The slag stone salvaging device of the shield tunneling machine and the use method thereof are described in detail. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
Claims (6)
1. The utility model provides a shield constructs quick-witted sediment stone fishing device which characterized in that includes: the device comprises a shield host, a circulation system and a screening device;
The shield host machine comprises: the device comprises a shield body and a cutter head arranged on the end face of the shield body; a baffle plate is arranged on the end face of the shield body, facing the cutter head, an excavation bin is arranged between the baffle plate and the cutter head, a broken stone bin is arranged between the baffle plate and the shield body, the broken stone bin is communicated with the excavation bin, and the broken stone bin is used for crushing part of slag stones sent into the broken stone bin by the excavation bin;
The input end of the circulation system is communicated with the excavation bin, and the output end of the circulation system is communicated with the broken stone bin; the screening device is respectively communicated with the excavation bin and the output end of the circulation system;
the circulation system controls slurry to flow in the shield main machine so as to drive slag stones to move;
The screening device is fixedly connected inside the shield main machine, and the cutter head is used for conveying slag stones in the excavation bin into the screening device; said screening means being arranged to separate the slag and discharge it from said circulation system;
the surface of the cutter disc facing the partition plate is uniformly provided with a slag scraping hopper along the circumferential direction, and the surface of the partition plate facing the cutter disc is provided with a guide plate;
The slag scraping hopper rotates along with the cutter head so as to collect slag stones in the excavation bin; the guide plate is used for guiding the slag stones collected by the slag scraping hopper to be sent into the screening device;
The input of the loop system comprises: the slurry inlet pipe is used for inputting slurry and is communicated with the excavation bin;
the output end of the loop system comprises: a slurry discharge pipe, a quarrying tank and an integrated circulation pump; the first end of the slurry discharging pipe is communicated with the crushed stone bin, the second end of the slurry discharging pipe is communicated with the integrated circulating pump, and the integrated circulating pump is used for providing power for circulating slurry; the quarrying box is arranged between the slurry discharging pipe and the integrated circulation pump to collect slag stones;
The screening device comprises a screening box assembly;
The shield constructs quick-witted sediment stone fishing device still includes: a cleaning mechanism for cleaning the screen box assembly, the cleaning mechanism comprising: a flushing pipe, a flushing tee joint and a pressure relief pipe;
The flushing tee joint is respectively communicated with the flushing pipe, the pressure relief pipe and the top of the screening box assembly.
2. The shield tunneling machine slag salvaging device according to claim 1, wherein said screening device further comprises a slag collecting hopper; the slag collecting hopper is arranged in the excavation bin and penetrates through the partition plate to be communicated with one end of the screening box assembly;
the bottom of the screening box assembly is respectively communicated with the output end of the circulation system and the slag receiving device; the slag receiving device is used for receiving slag stones screened out by the screening box assembly.
3. The shield tunneling machine slag salvaging device of claim 2, wherein said screening box assembly comprises: the screening device comprises a box body, a screening cylinder and a driver; the screening cylinder is arranged in the box body along the length direction of the box body, the first end of the box body is communicated with the slag collecting hopper, and the second end of the box body is provided with the driver; the driver is used for driving the screening cylinder to rotate relative to the axis of the screening cylinder so as to screen the slag stones.
4. The shield tunneling machine slag salvaging device according to claim 3, wherein said screening cartridge comprises: a filter cartridge and a drive disk disposed on an extension of the cartridge axis;
The driving disc is connected with the filter cylinder through a reinforcing rib, and is connected with the driver for transmission; and a falling stone hole is formed between the end surface of the filter cylinder and the driving disc, the driving disc is used for driving the filter cylinder to rotate and screen slag stones, and the slag stones fall into the slag receiving device from the falling Dan Kong.
5. The method for using the shield tunneling machine slag stone salvaging device, which is applied to the shield tunneling machine slag stone salvaging device of claim 4, is characterized by comprising the following steps:
step one: the cutter head rotates to excavate an excavation surface, two ends of the screening device are communicated, the slurry discharging pipe is communicated with the crushed stone bin, the cleaning mechanism is closed, and the driver is started to drive the screening cylinder to rotationally screen;
Step two: the slurry inlet pipe inputs slurry into the excavation bin, the slurry and the slag stone are mixed into slag slurry, the cutter head rotates to drive the slag scraping hopper to scrape the slag stone, and after the slag scraping hopper rotates to a certain height, the slag stone falls onto the guide plate and slides into the slag collecting hopper along the surface of the guide plate; meanwhile, the residual slurry enters a stone crushing bin for stone crushing and stirring under the operation of the circulation system, and is then discharged into the stone collecting box through the slurry discharging pipe;
Step three: the slag stones in the slag collecting hopper enter a screening device, the screening cylinder is controlled to rotate, and the slag stones are screened according to the volume; the screened slag slurry flows out of the slurry discharging pipe, and slag stones are reserved;
Step four: the output torque value of the driver is monitored in real time, when the monitored torque value is larger than or equal to a torque set value, slag stones with set volume quantity are collected in the screening device, at the moment, the screening device is controlled to be disconnected from the excavation bin, and the cleaning mechanism is started to clean the screening cylinder;
step five: after the cleaning of the screening cylinder is finished, suspending the cleaning operation of the cleaning mechanism, monitoring the height of the slag slurry level in the screening device, when the liquid level surface is lowered to a set value, controlling the screening device to be disconnected with the slurry discharging pipe, simultaneously controlling the cleaning mechanism to release pressure, and after the pressure is released to a set pressure value, communicating the slag receiving device with the lower part of the box body, and continuously running the rotary screening until all slag stones in the screening device fall into the slag receiving device, and transporting the slag stones out of a tunnel through an auxiliary system;
Step six: and (3) disconnecting the slag receiving device from the box body, and repeating the first to fifth steps until the tunnel excavation slag discharge is completed.
6. The method for using the slag stone salvaging device of the shield tunneling machine according to claim 5, wherein the method comprises the following steps: when overhauling the broken stone bin, the communication between the excavation bin and the broken stone bin is disconnected, the cleaning mechanism is kept closed, other parts normally operate, slag stones and slag slurry directly enter the screening device from the excavation bin, and flow into the output end of the circulation system after screening.
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| CN202210816272.3A CN115306414B (en) | 2022-07-12 | 2022-07-12 | Slag stone salvaging device of shield tunneling machine and using method of slag stone salvaging device |
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| CN202210816272.3A CN115306414B (en) | 2022-07-12 | 2022-07-12 | Slag stone salvaging device of shield tunneling machine and using method of slag stone salvaging device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959183A (en) * | 2015-07-17 | 2015-10-07 | 中国铁建重工集团有限公司 | Muddy water circulation and stone crushing method for shield tunneling machine |
| CN109252871A (en) * | 2018-10-08 | 2019-01-22 | 中铁华隧联合重型装备有限公司 | Mud water type TBM and slurry-water balance type shield machine and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3427738B2 (en) * | 1998-07-29 | 2003-07-22 | Ｊｆｅエンジニアリング株式会社 | Shield construction method |
| CN111550255A (en) * | 2020-05-27 | 2020-08-18 | 中铁工程装备集团有限公司 | Shield tunneling machine and construction method thereof |
| CN215213513U (en) * | 2021-01-26 | 2021-12-17 | 中铁工程装备集团有限公司 | Shield machine and grouting system thereof |
| CN113338988B (en) * | 2021-08-09 | 2021-11-02 | 中国铁建重工集团股份有限公司 | Bimodulus entry driving machine of slagging tap and compound slag tapping system thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959183A (en) * | 2015-07-17 | 2015-10-07 | 中国铁建重工集团有限公司 | Muddy water circulation and stone crushing method for shield tunneling machine |
| CN109252871A (en) * | 2018-10-08 | 2019-01-22 | 中铁华隧联合重型装备有限公司 | Mud water type TBM and slurry-water balance type shield machine and its control method |
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