CN212296374U - Slurry balance shield stone taking device - Google Patents
Slurry balance shield stone taking device Download PDFInfo
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- CN212296374U CN212296374U CN202021650008.XU CN202021650008U CN212296374U CN 212296374 U CN212296374 U CN 212296374U CN 202021650008 U CN202021650008 U CN 202021650008U CN 212296374 U CN212296374 U CN 212296374U
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Abstract
The utility model discloses a slurry balance shield stone taking device, which comprises a shield cabin, a slurry inlet pipe, a slurry discharge pipe, a spiral conveyor and a stone storing and taking mechanism; the position of the slurry inlet pipe connected with the shield cabin is higher than the position of the slurry discharge pipe connected with the shield cabin; the shield cabin is divided into an air cushion cabin and a muddy water cabin, the air cushion cabin is formed by injecting gas into the shield cabin through an air pressure device, and the air cushion cabin is connected with an air inlet and exhaust device; the inlet of the first section of the screw conveyor is arranged at the bottom of the muddy water cabin; the second section of screw conveyor is connected with the tail part of the first section of screw conveyor; the stone storing and taking mechanism comprises a belt, a first stone storing and taking unit, a second stone storing and taking unit and a third stone storing and taking unit. The utility model discloses a screw conveyer gets the stone fast, has both solved muddy water cabin lower part cobble "row of stagnating" a difficult problem, has reduced the quantity that mud carried the dregs again, can effectively improve the shield and construct the construction progress, reduces the balanced shield of muddy water and constructs construction cost, has great popularization prospect.
Description
Technical Field
The utility model relates to a muddy water balance shield constructs the design, in particular to muddy water balance shield constructs gets stone device.
Background
The existing shield construction mainly adopts an earth pressure balance shield and a muddy water balance shield. The main advantages of the construction of the slurry balance shield include that the pressure of the soil cabin is controlled by air pressure, the pressure is controlled accurately, the settlement of the earth surface is small in the construction, and the soil cabin is connected with a slurry pipe so as not to cause gushing and the like; the mud-water separation system on the working well has the defects of large floor area, high cost of shield equipment, large construction power consumption, high and low influence on the construction progress by the capability of the mud-water separation system and the like. The slurry balance shield is generally used for tunnel construction with large and medium diameters, abundant underground water and high ground surface settlement requirement. The slurry balance shield is mostly adopted in the construction of the large-diameter shield and the downward crossing river.
The slurry balance shield crossing the river shows a plurality of inadaptations in the shield construction of sandy gravel stratum (such as the Lanzhou slurry balance shield crossing the yellow river, the Luoyang slurry balance shield crossing the Luoyang slurry balance shield) and the like. The slurry is used as a carrier for the slurry balance shield, the slurry is carried with the muck to be transported out of the tunnel in the pipeline, and then a slurry-water separation system is adopted for separation. The slurry pump has a strict limitation on the pumping particle size because pebbles with large particle sizes cannot be pumped or suspended in slurry.
The content of floating pebbles in a sandy gravel stratum is high (the content sometimes reaches 70 percent), the particle size is large (the maximum particle size can reach 600mm), pebbles excavated by a cutter on a slurry balance shield cutter head cannot be suspended in slurry due to high density, and directly sink to the bottom of a slurry cabin, the pebbles cannot be discharged as soon as possible, so that the pebbles at the bottom of the slurry cabin are accumulated to form a 'discharge stagnation' phenomenon, the shield cannot be normally tunneled, and the 'discharge stagnation' pebbles can be normally tunneled again only after being treated.
The method generally adopted by a slurry balance shield under a sandy gravel stratum is to improve the flow rate of slurry and reduce the amount of pebbles in unit volume; adding a quarrying box, depositing cobbles in the quarrying box, and manually taking out the cobbles; and a stone crusher is added, and the capability of crushing pebbles is improved. Although the measures are taken, the slurry balance shield is not ideal to tunnel in a sandy gravel stratum, because the gravel is broken or has low collection capacity, the gravel in the slurry cabin is seriously discharged in a stagnation mode, the shield tunneling speed is slow (about 10mm/min), the shield tunneling construction progress is slow (sometimes only can reach 5 meters per day), and the construction cost is extremely high.
Therefore, a new device for treating the difficult problem of pebble 'stagnant discharge' needs to be developed in the field, the difficult problem of pebble 'stagnant discharge' in a muddy water cabin constructed by a muddy water balance shield in a sandy gravel stratum is solved, and the purpose of improving the shield construction progress is further achieved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a muddy water balance shield constructs gets stone device is provided. On the basis of the design of the slurry balance shield, the stone taking unit is additionally arranged, and deposited pebbles at the lower part of the slurry cabin of the slurry balance shield are quickly taken out through the screw conveyer, so that the problem that pebbles in the slurry cabin are 'discharged in a stagnation mode' when the slurry balance shield is constructed in a sandy pebble stratum is solved, and the shield construction progress can be effectively improved.
The purpose of the utility model is realized through the following technical scheme:
a slurry balance shield stone taking device comprises a shield cabin, a slurry inlet pipe, a slurry discharge pipe, a spiral conveyor and a stone storing and taking mechanism; the position of the slurry inlet pipe connected with the shield cabin is higher than the position of the slurry discharge pipe connected with the shield cabin; the shield cabin is divided into an air cushion cabin and a muddy water cabin, the air cushion cabin is formed by injecting gas into the shield cabin through an air pressure device, and the air cushion cabin is connected with an air inlet and exhaust device;
the spiral conveyor comprises a first section of spiral conveyor and a second section of spiral conveyor, an inlet of the first section of spiral conveyor is arranged at the bottom of the mud tank, and the first section of spiral conveyor is obliquely arranged from bottom to top; the second section of screw conveyor is connected with the tail part of the first section of screw conveyor;
the stone storing and taking mechanism comprises a belt, a first stone storing and taking unit, a second stone storing and taking unit and a third stone storing and taking unit; the first stone storing and taking unit comprises a first upper gate, a first lower gate and a first stone storing box; the second stone storing and taking unit comprises a second upper gate, a second lower gate and a second stone storing box; the third stone storing and taking unit comprises a third upper gate, a third lower gate and a third stone storing box; the belt sets up and deposits stone unit, second and third and deposit the stone unit below at first deposit and withdraw stone unit.
Preferably, the air cushion cabin and the muddy water cabin are arranged in the front shield.
Preferably, the air inlet and outlet device is arranged above the air cushion cabin, so that air inlet and outlet are facilitated.
Preferably, the rotating shaft of the first screw conveyor is connected with an annular drive.
Preferably, the rotating shaft of the second section of the screw conveyor is in driving connection with the screw conveyor.
Preferably, the first section of screw conveyor and the second section of screw conveyor are shaft screw conveyors.
Preferably, the air cushion chamber is communicated with the second spiral conveyer cylinder through a pipeline, and the air with the same pressure enters the air cushion chamber, the rear part of the first spiral conveyer cylinder and the second spiral conveyer cylinder.
Preferably, the first stone storage box, the second stone storage box and the third stone storage box are connected with the air supply pipeline.
Preferably, the first stone storage box, the second stone storage box and the third stone storage box are made of transparent materials.
The utility model has the advantages that: a spiral conveyor stone taking unit is additionally arranged on the slurry balance shield machine. The deposited pebbles at the lower part of the muddy water cabin are directly taken out by the screw conveyor, and the pebbles do not need to be crushed and carried with slurry for pumping. The spiral conveyor has the advantages that the stone taking speed is high, the difficult problem of 'stagnant discharge' of pebbles at the lower part of the muddy water cabin is solved, the shield tunneling speed is improved, the quantity of muck carried by mud is reduced, the shield construction progress can be effectively improved, the muddy water balance shield construction cost is reduced, and the popularization prospect is wide.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a slurry balance shield and a stone extractor;
in the figure, 1-cutter head, 2-muddy water cabin, 3-front shield, 4-air cushion cabin, 5-middle shield, 6-propulsion oil cylinder, 7-first air slurry dividing line, 8-slurry inlet pipe, 9-slurry discharge pipe, 10-pipe piece, 11-shield tail, 12-assembly machine, 13-second air slurry dividing line, 14-annular drive, 15-first spiral conveyor, 16-first upper gate, 17-first lower gate, 18-first stone storage box, 19-second spiral conveyor, 20-second upper gate, 21-second lower gate, 22-second stone storage box, 23-third upper gate, 24-third lower gate, 25-third stone storage box, 26-spiral machine drive and 27-belt.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the presence of a first feature above or below a second feature may encompass direct contact of the first and second features, and may also encompass contact of the first and second features not being in direct contact, but via additional features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. Including a first feature being directly below and obliquely below a second feature, or simply indicating that the first feature is at a lesser elevation than the second feature, if present below, under or below the second feature.
Example one
As shown in fig. 1, a slurry balance shield stone taking device comprises a shield cabin, a slurry inlet pipe 8, a slurry discharge pipe 9, a screw conveyor and a stone storing and taking mechanism; the position of the slurry inlet pipe 8 connected with the shield cabin is higher than the position of the slurry discharge pipe 9 connected with the shield cabin; the shield cabin is divided into an air cushion cabin 4 and a muddy water cabin 2, the air cushion cabin 4 is formed by injecting gas into the shield cabin through an air pressure device, and the air cushion cabin 4 is connected with an air inlet and exhaust device;
the screw conveyer comprises a first screw conveyer 15 and a second screw conveyer 19, the inlet of the first screw conveyer 15 is arranged at the bottom of the muddy water cabin 2, and further, the length of the first screw conveyer 15 extending into the muddy water cabin 2 is 1/5-2/3 of the width of the muddy water cabin 2. The first section of screw conveyor 15 is arranged from bottom to top in an inclined manner (the specific inclined direction is shown in fig. 1); the second section of screw conveyor 19 is connected with the tail part of the first section of screw conveyor 15; the connection between the second screw conveyor 19 and the first screw conveyor 15 ensures that the slag or the slag stone can be smoothly transferred from the first screw conveyor 15 to the second screw conveyor 19.
The stone storing and taking mechanism comprises a belt 27, a first stone storing and taking unit, a second stone storing and taking unit and a third stone storing and taking unit; the first stone storing and taking unit comprises a first upper gate 16, a first lower gate 17 and a first stone storing box 18; the second stone storing and taking unit comprises a second upper gate 20, a second lower gate 21 and a second stone storing box 22; the third stone storing and taking unit comprises a third upper gate 23, a third lower gate 24 and a third stone storing box 25; the belt 27 is disposed under the first, second, and third access stone units.
The utility model discloses an increase screw conveyer and get stone unit on the balanced shield of muddy water machine. The deposited pebbles at the lower part of the muddy water cabin 2 are directly taken out by the screw conveyer, and the pebbles do not need to be crushed and carried with slurry for pumping. The spiral conveyor has high stone taking speed, solves the difficult problem of 'stagnant discharge' of pebbles at the lower part of the muddy water cabin 2, improves the shield tunneling speed, reduces the quantity of muck carried by mud, can effectively improve the shield construction progress, reduces the construction cost of the muddy water balance shield, and has great popularization prospect.
Example two
The slurry balance shield consists of a cutter head 1, a front shield 3, a middle shield 5, a propulsion oil cylinder 6, a slurry inlet pipe 8, a slurry discharge pipe 9, a shield tail 11, an assembling machine 12, a rear matching trolley and the like. The front shield 3 soil cabin (shield cabin) is divided into a muddy water cabin 2 and an air cushion cabin 4 by a partition board. The slurry balance shield stone taking structure comprises an annular drive 14, a first section of screw conveyor 15, a first upper gate 16, a first lower gate 17, a first stone storage box 18, a second section of screw conveyor 19, a second upper gate 20, a second lower gate 21, a second stone storage box 22, a third upper gate 23, a third lower gate 24, a third stone storage box 25, a screw machine drive (screw machine drive 26), a belt 27 and the like. In order to ensure continuous slag discharge of the two screw conveyors, the rotation shaft of the first screw conveyor 15 is designed by an annular drive 14. The shaft of the second screw conveyor 19 is connected to a screw drive 26. The screw drive 26 is a screw drive assembly including a rotating electric machine. The first screw conveyor 15 and the second screw conveyor 19 are screw conveyors having shafts.
The cutter head 1 is provided with a hob and a slag inlet, the cutter head 1 is connected with a cutter head supporting arm, the cutter head supporting arm is connected with a main drive, and the cutter head supporting arm is driven by the main drive to rotate. The air cushion cabin 4 and the muddy water cabin 2 are arranged in the front shield 3. The air inlet and outlet device is arranged above the air cushion cabin 4, so that air inlet and outlet are facilitated.
The air cushion cabin 4 is communicated with the second section of spiral conveyor 19 barrel through a pipeline, and air with the same pressure enters the air cushion cabin 4, the rear part of the first section of spiral conveyor 15 barrel and the second section of spiral conveyor 19 barrel. The first plasma dividing line 7 and the second plasma dividing line 13 are in the same plane due to the air pressure. The first and second gas slurry dividing lines 7 and 13 are higher than the inlet of the lowest slurry inlet pipe 8 of the air cushion compartment 4 and lower than the bottom of the second section of the screw conveyor 19.
The first stone storage box 18, the second stone storage box 22 and the third stone storage box 25 are connected with an air supply pipeline. In order to prevent the air from entering the stone storage box to cause large air pressure fluctuation of the air cushion cabin 4 when the first upper gate 16, the second upper gate 20 or the third upper gate 23 are opened, the stone storage box is filled with air with the same pressure in the air cushion cabin 4 through an air supplementing pipeline before the lower gate is closed and the upper gate is opened (before the first upper gate 16 is closed and the first upper gate is opened by the first lower gate 17, or before the second upper gate 20 is closed and the second upper gate 20 is opened by the second lower gate 21, or before the third upper gate 23 is closed and the third upper gate 23 is opened by the third lower gate 24).
The first stone storage box 18, the second stone storage box 22 and the third stone storage box 25 are made of transparent materials, and pebble filling states in the stone storage boxes can be observed conveniently through a camera.
Before the slurry balance shield is tunneled, the air pressure at the air cushion cabin 4 is adjusted to be within a required value range, the slurry inlet pipe 8 is started to feed slurry, the slurry discharge pipe 9 is started to discharge slurry, and the slurry inlet and the slurry discharge are kept balanced. The majority of the slurry entering of the slurry inlet pipe 8 enters the muddy water cabin 2, and the minority enters the lower part of the first gas slurry boundary 7 of the air cushion cabin 4. The cutter head 1 is started to rotate, the cutter on the cutter head 1 cuts sand and pebbles, and the cut sand and pebbles enter the muddy water cabin 2. And starting the propulsion oil cylinder 6, and pushing the propulsion oil cylinder 6 to advance on the front end surface of the duct piece 10. The sand and pebbles entering the slurry cabin 2 are mixed with the slurry, the sand and the slurry in the slurry cabin 2 are mixed, the sand is suspended in the slurry, and the sand is directly pumped out by the slurry pump through a pipeline through the slurry discharge pipe 9 and is separated outside the tunnel. The pebbles are directly deposited at the lower part of the muddy water cabin 2 due to the high density. Two sections of screw conveyors (a first section of screw conveyor 15 and a second section of screw conveyor 19) are directly started and rotated, pebbles at the lower part of the muddy water cabin 2 are directly discharged onto a belt 27 through the screw conveyors, are conveyed to the tail part of the shield trolley through the belt 27, directly fall into a slag car, are finally conveyed to a working well through a battery truck, and are hoisted to the ground by a gantry crane to be poured into a slag pit. After the shield tunneling machine advances a certain distance (generally, the length of a segment 10), the shield tunneling machine stops advancing, and a segment 10 erector 12 is used to assemble a plurality of segments 10 of a ring of segments 10 into a ring in sequence. And then tunneling and assembling are carried out.
EXAMPLE III
The embodiment discloses a construction method of a slurry balance shield stone taking device, wherein before slurry balance shield tunneling, a first upper gate 16, a first lower gate 17, a second upper gate 20, a second lower gate 21, a third upper gate 23 and a third lower gate 24 are all in a closed state;
when the slurry balance shield starts to tunnel, the first upper gate 16 and the third upper gate 23 are opened, and the first section of screw conveyor 15, the second section of screw conveyor 19 and the belt 27 are started simultaneously;
pebbles containing slurry at the lower part of the muddy water cabin 2 are conveyed backwards through the screw conveyer in the axial direction, and when the pebbles containing slurry reach the second gas-slurry boundary 13, the gas pressure action prevents the slurry in the pebbles from moving upwards continuously; since the air cushion compartment 4 is in communication with the upper space of the second air slurry dividing line 13, the first air slurry dividing line 7 and the second air slurry dividing line 13 are always on the same horizontal plane.
Stone storing and taking step:
the first upper gate 16 and the third upper gate 23 are in an open state, pebbles enter the first stone storage box 18 through the screw shaft, when the first stone storage box 18 is nearly filled with (for example, 80-90% of the volume of the first stone storage box 18) pebbles through observation of the inside condition of the first stone storage box 18, the second stone storage box 22 and the third stone storage box 25 by a camera (the camera is arranged beside the first stone storage box 18, the second stone storage box 22 and the third stone storage box 25), the second upper gate 20 is opened, and the first upper gate 16 is closed (the pebbles enter the second stone storage box 22 through the second section of screw conveyor 19); the first lower gate 17 is opened, and the pebbles in the first pebble storage box 18 fall onto the running belt 27 and are transported away by the running belt 27; after the first stone storage box 18 has no pebbles, the first lower gate 17 is closed;
when the second stone storage box 22 is observed to be nearly filled with pebbles through a camera (for example, 80% -90% of the volume of the second stone storage box 22), the first upper gate 16 is opened, the second upper gate 20 is closed (most of the pebbles enter the first stone storage box 18 through the screw shaft, and a small part of the pebbles may enter the third stone storage box 25), the second lower gate 21 is opened, and the pebbles in the second stone storage box 22 fall onto the running belt 27 and are transported away through the running belt 27; after the second stone storage box 22 has no pebbles, the second lower gate 21 is closed;
the first stone storage box 18 and the second stone storage box 22 work circularly and alternately;
when the third stone storage box 25 is observed by a camera to be nearly filled with pebbles (for example, 80-90% of the volume of the third stone storage box 25), the first section of screw conveyor 15 shaft and the second section of screw conveyor 19 stop working, the third upper gate 23 and the upper gate (the first upper gate 16 and/or the second upper gate 20) corresponding to the pebble storage box (the first stone storage box 18 and/or the second stone storage box 22) are closed, then, opening a third lower gate 24 and a lower gate (a first lower gate 17 and/or a second lower gate 21) corresponding to the pebbled stone storage box (a first stone storage box 18 and/or a second stone storage box 22), and closing the corresponding lower gate (the first lower gate 17 and/or the second lower gate 21 and/or the third lower gate 24) when the pebbled stone storage box (the first stone storage box 18 and/or the second stone storage box 22 and/or the third stone storage box 25) has no pebbles;
thus finishing the stone storing and taking step once;
then, the step of storing and taking stones is executed, and when the step of storing and taking stones is executed, the first section of spiral conveyor 15 and the second section of spiral conveyor 19 need to be started simultaneously (namely, the first section of spiral conveyor 15 and the second section of spiral conveyor 19 are in an open state);
normally, the step of accessing the stone is repeatedly executed until the stone accessing is required to be stopped (i.e. the step of accessing the stone is manually stopped). When finding the pebble storage box with pebbles, the corresponding lower gate needs to be opened, and the pebbles in the pebble storage box are taken out.
Example four
The construction method of the slurry balance shield stone taking device further comprises an air pressure balance control flow of the slurry balance shield stone taking device: and determining a balance pressure value according to the buried depth of the muddy water balance shield penetrating through the stratum, the observation of surface subsidence and the like, manually adjusting the balance pressure value in a shield operation chamber, and automatically adjusting air intake or exhaust through an air intake and exhaust device above the air cushion cabin 4 to ensure that the muddy water pressure of the muddy water cabin 2 is close to the balance pressure value (the error is not more than 0.05 bar). The air cushion cabin 4 is communicated with the second section of spiral conveyor 19 barrel through a pipeline, and air with the same pressure enters the rear part of the first section of spiral conveyor 15 barrel and the second section of spiral conveyor 19 barrel through the air cushion cabin 4. The first plasma dividing line 7 and the second plasma dividing line 13 are in the same plane due to the air pressure. In order to prevent the air pressure fluctuation of the air cushion cabin 4 caused by the fact that air enters the stone storage box when the first upper gate 16, the second upper gate 20 or the third upper gate 23 is opened, the stone storage box is filled with air with the same pressure as the air cushion cabin 4 through the air supplementing pipeline after the lower gate is closed and before the upper gate is opened.
The slurry balance shield and the stone taking device have the following notice items:
(1) according to the shield tunneling speed and the stone taking speed, the flow rates of the slurry inlet pipe 8 and the slurry outlet pipe 9 are reasonably adjusted, and the first gas-slurry boundary 7 and the second gas-slurry boundary 13 are ensured to be higher than the slurry inlet pipe 8 in the air cushion cabin 4 (when a plurality of inlets of the slurry inlet pipes 8 are arranged, the first gas-slurry boundary 7 and the second gas-slurry boundary 13 are higher than the lowest inlet of the slurry inlet pipe 8 in the air cushion cabin 4) and lower than the bottom of the second section of screw conveyor 19;
(2) pebbles at the lower part in the slurry tank 2 are emptied as much as possible in the shield construction process, so that 'discharging stagnation' of the pebbles is avoided;
(3) the volume of the stone storage box body is increased as much as possible under the condition that the shield space allows, and the frequency of opening the upper gate and the lower gate is reduced;
(4) when the screw conveyer stops, the slurry shield can normally carry out slurry feeding and slurry discharging construction tunneling, but the pebble deposition height is not allowed to be higher than the slurry discharging pipe 9;
(5) when the shield tunneling finishes assembling the duct piece 10, stone taking construction can also be carried out;
(6) the screw conveyer conveys the pebbles discontinuously, so that a shaft screw is adopted, and a belt screw cannot be adopted.
The utility model discloses screw conveyer disposes two sections altogether. The first screw conveyor 15 is arranged obliquely, and the rear end is connected with the front end of the second screw conveyor 19. The front end of the first spiral shaft directly extends into the muddy water cabin 2. The second section of screw conveyor 19 is arranged horizontally, and the lower part is designed with three sets of combined devices consisting of upper and lower gates of the screw conveyor and a stone storage box, wherein the upper and lower gates are closed under normal conditions. When the slurry balance shield is normally tunneled, the cutter head 1 rotates, the cutter cuts sand and pebbles, and the cut sand and pebbles enter the slurry cabin 2. The sand and the slurry in the slurry inlet pipe 8 are mixed and suspended in the slurry, and are discharged by a slurry discharge pump through a slurry discharge pipe 9 to be separated outside the tunnel. Pebbles are directly deposited to the lower part of the muddy water cabin 2, the two sections of screw rotary conveyors are directly started, the upper gates of the first set and the third set of combined devices are opened, the lower gates are closed, the first section of screw conveyor 15 screw shaft conveys the deposited pebbles at the bottom of the muddy water cabin 2 into the second section of screw conveyor 19 barrel, and the second section of screw conveyor 19 screw shaft continues to convey backwards. And the stone falls into a stone storage box through the opened upper gate. When the first stone storage box is full of pebbles, the upper gate of the second combined device is opened, the upper gate of the first combined device is closed, the lower gate of the first combined device is opened, the pebbles in the stone storage box fall onto the running belt 27, and then the lower gate of the first combined device is closed. The pebbles are conveyed to the tail part of the shield trolley through a belt 27, directly fall into the slag car, are conveyed to a working well through the battery car, and are hoisted to the ground by the gantry crane to be poured into a slag pit. When the second stone storage box is full of pebbles, the upper gate of the first combined device is opened, the upper gate of the second combined device is closed, the lower gate is opened, the pebbles in the stone storage box fall onto the running belt 27, and then the lower gate is closed. The first set and the second set of stone storage boxes are alternately opened according to the circulation, when the third set of stone storage boxes are full of pebbles, the two sections of screw conveyors are stopped, the upper gate of the third set of combined device is directly closed, the lower gate is opened, the pebbles in the stone storage boxes fall onto the running belt 27, and then the lower gate is closed. And starting the screw conveyor again to continue to take stones. In the slurry balance shield tunneling process, the rear ends of the air cushion cabin 4 and the first section of screw conveyor 15 are communicated with the cylinder of the second section of screw conveyor 19 through a pipeline, air pressure balance is kept, and it is ensured that only pebbles and no slurry exist in the residue soil output by the screw conveyor.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (9)
1. The utility model provides a muddy water balance shield constructs stone device of getting which characterized in that: comprises a shield cabin, a slurry inlet pipe, a slurry discharge pipe, a spiral conveyor and a stone storing and taking mechanism; the position of the slurry inlet pipe connected with the shield cabin is higher than the position of the slurry discharge pipe connected with the shield cabin; the shield cabin is divided into an air cushion cabin and a muddy water cabin, the air cushion cabin is formed by injecting gas into the shield cabin through an air pressure device, and the air cushion cabin is connected with an air inlet and exhaust device;
the spiral conveyor comprises a first section of spiral conveyor and a second section of spiral conveyor, an inlet of the first section of spiral conveyor is arranged at the bottom of the mud tank, and the first section of spiral conveyor is obliquely arranged from bottom to top; the second section of screw conveyor is connected with the tail part of the first section of screw conveyor;
the stone storing and taking mechanism comprises a belt, a first stone storing and taking unit, a second stone storing and taking unit and a third stone storing and taking unit; the first stone storing and taking unit comprises a first upper gate, a first lower gate and a first stone storing box; the second stone storing and taking unit comprises a second upper gate, a second lower gate and a second stone storing box; the third stone storing and taking unit comprises a third upper gate, a third lower gate and a third stone storing box; the belt sets up and deposits stone unit, second and third and deposit the stone unit below at first deposit and withdraw stone unit.
2. The slurry balance shield stone extraction device according to claim 1, wherein: the air cushion cabin and the muddy water cabin are arranged in the front shield.
3. The slurry balance shield stone extraction device according to claim 1, wherein: the air inlet and outlet device is arranged above the air cushion cabin.
4. The slurry balance shield stone extraction device according to claim 1, wherein: the rotating shaft of the first section of screw conveyor is connected with an annular drive.
5. The slurry balance shield stone extraction device according to claim 1, wherein: and a rotating shaft of the second section of screw conveyor is in driving connection with the screw conveyor.
6. The slurry balance shield stone extraction device according to claim 1, 4 or 5, wherein: the first section of screw conveyer and the second section of screw conveyer adopt shaft screw conveyers.
7. The slurry balance shield stone extraction device according to claim 1, wherein: the air cushion cabin is communicated with the second section of spiral conveyor barrel through a pipeline, and air with the same pressure enters the air cushion cabin, the rear part of the first section of spiral conveyor barrel and the second section of spiral conveyor barrel.
8. The slurry balance shield stone extraction device of claim 7, wherein: the first stone storage box, the second stone storage box and the third stone storage box are connected with an air supplement pipeline.
9. The slurry balance shield stone extraction device according to claim 1 or 8, wherein: the first stone storage box, the second stone storage box and the third stone storage box are made of transparent materials.
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| CN202021650008.XU CN212296374U (en) | 2020-08-10 | 2020-08-10 | Slurry balance shield stone taking device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788461A (en) * | 2022-12-16 | 2023-03-14 | 盾科工程装备有限公司 | Muddy water suction type shield machine |
-
2020
- 2020-08-10 CN CN202021650008.XU patent/CN212296374U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115788461A (en) * | 2022-12-16 | 2023-03-14 | 盾科工程装备有限公司 | Muddy water suction type shield machine |
| CN115788461B (en) * | 2022-12-16 | 2023-08-04 | 盾科工程装备有限公司 | Slurry suction type shield tunneling machine |
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