CN114810105A - Deep layer regulating and water draining tunnel shield machine - Google Patents

Abstract

The invention relates to a deep layer regulation and drainage tunnel shield machine, which comprises: a shield tunneling machine body; the cutter head is arranged at the head part of the shield tunneling machine body; the driving mechanism is arranged in the shield tunneling machine body and is in driving connection with the cutter head; and the muddy water extension device is arranged behind the shield tunneling machine body and connected with the shield tunneling machine body, and the bottom of the muddy water extension device is provided with rollers which can move along with the shield tunneling machine body. The slurry extending device is arranged behind the shield machine body, so that a slurry system at the tail of the shield machine body can be arranged on the ground outside the working well, split starting of the shield machine is realized, and the bottom of the slurry extending system is provided with the roller, so that the slurry extending system can move forwards along with the tunneling of the shield machine body without influencing the normal tunneling of the shield machine.

Description

Deep layer regulating and water draining tunnel shield machine

Technical Field

The invention relates to the field of shield construction engineering, in particular to a deep layer storage and drainage tunnel shield machine.

Background

Extreme rainfall has become increasingly frequent worldwide in recent years due to climate change. Waterlogging and combined flow overflow are a common problem. In order to solve urban inland inundation, build a rain and sewage diversion system and the like, deep storage tunnel engineering projects are available in many cities at home and abroad.

Because city ground space is narrow and small, has restricted the size of working well, and small-size working well can't hold down muddy water balanced shield structure machine and the muddy water system of afterbody, consequently need provide a new solution urgently.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a deep storage and drainage tunnel shield machine, and solves the problem that the existing small-size working well cannot accommodate a mud water balance shield machine and a mud water system at the tail of the shield machine.

The technical scheme for realizing the purpose is as follows:

the invention provides a deep layer regulating and water draining tunnel shield machine, which comprises:

a shield tunneling machine body;

the cutter head is arranged at the head part of the shield tunneling machine body;

the driving mechanism is arranged in the shield tunneling machine body and is in driving connection with the cutter head; and

the muddy water extending device is arranged behind the shield machine body and connected with the shield machine body, and the bottom of the muddy water extending device is provided with rollers which can move along with the shield machine body.

The slurry extending device is arranged behind the shield machine body, so that a slurry system at the tail of the shield machine body can be arranged on the ground outside the working well, split starting of the shield machine is realized, and the bottom of the slurry extending system is provided with the roller, so that the slurry extending system can move forwards along with the tunneling of the shield machine body without influencing the normal tunneling of the shield machine.

The deep storage and drainage tunnel shield machine is further improved in that the muddy water extending device comprises a bracket, a hard pipe arranged on the bracket and a hose connected with the hard pipe, the bottom of the bracket is provided with the roller, the other end of the hard pipe is connected with the shield machine body, and the other end of the hose is connected with a muddy water system.

The deep layer storage and drainage tunnel shield machine is further improved in that a plurality of steel wire brushes are arranged at the tail part of the shield machine body, and a grease cavity is formed between two adjacent steel wire brushes;

and sealing grease is injected into the grease cavity.

The deep storage drainage tunnel shield machine is further improved in that the deep storage drainage tunnel shield machine further comprises a plurality of oil injection pipelines buried at the shield tail of the shield machine body, a plurality of distance sensors arranged on the inner side of the shield tail of the shield machine body, a grease pump connected with the oil injection pipelines and a first controller connected with the distance sensors and the grease pump;

a plurality of oil injection pipelines are correspondingly arranged at each grease cavity;

the distance sensor is arranged corresponding to the oil injection pipeline and used for detecting the distance between the inner side of the shield tail of the shield tunneling machine body and the corresponding pipe piece;

and the first controller controls the corresponding grease pump to operate according to the distance detected by the distance sensor so as to adjust the grease injection amount at the corresponding oil injection pipeline.

The deep layer storage and drainage tunnel shield machine is further improved in that a plurality of sealing rings are arranged at the joint of the driving mechanism and the shield machine body, and a sealing cavity is formed between two adjacent sealing rings;

grease is injected into the sealing cavity.

The deep layer storage and drainage tunnel shield machine is further improved in that the deep layer storage and drainage tunnel shield machine further comprises a grease storage barrel arranged in the shield machine body, a grease filling pump connected with the grease storage barrel, electromagnetic oil feeders connected with the grease filling pump and arranged corresponding to the sealing cavities, a grease distributor connected between the electromagnetic oil feeders and the sealing cavities, a pressure detector arranged on the sealing cavities, and a second controller connected with the electromagnetic oil feeders and the pressure detector;

the electromagnetic oil feeder is also connected with the grease storage barrel through an overflow valve;

the pressure detector is used for detecting the grease pressure value in the corresponding sealing cavity;

and the second controller controls and adjusts the operation of the corresponding electromagnetic oil feeder according to the grease pressure value detected by the pressure detector so as to control the grease pressure in the grease cavity.

The deep storage and drainage tunnel shield machine is further improved in that an outer sealing ring is sleeved on the outer side of a sealing ring of the driving mechanism, a grease pipeline is embedded in the outer sealing ring, an annular water tank which is concave inwards is arranged on the inner side surface of the outer sealing ring, a first joint is arranged on the inner side surface of the outer sealing ring corresponding to the grease pipeline, and the first joint is arranged in the annular water tank;

a water jacket clapboard is arranged between the annular water tank of the outer sealing ring and the sealing ring, and a closed water storage space is formed between the water jacket clapboard and the annular water tank;

the end part of the first joint is abutted against the water jacket partition plate, and a sealing block is arranged at the joint of the first joint, the annular water tank and the water jacket partition plate;

the first joint is connected with a second joint, and the second joint part is inserted into the water jacket partition plate and is connected with the water jacket partition plate in a sealing manner;

the grease pipeline penetrates through the first joint and the second joint and is communicated with the corresponding sealing cavity.

The deep layer storage and drainage tunnel shield machine is further improved in that a cooling water pipe communicated with the annular water tank is further arranged in the outer sealing ring.

The deep storage and drainage tunnel shield machine is further improved in that a cutting tool is mounted on the cutter head, the cutting tool comprises a cutter body and alloy blades connected to two sides of the top of the cutter body, and the alloy blades form a cutting tip.

The deep layer storage and drainage tunnel shield machine is further improved in that a muddy water bin, a compartment breast board and an air cushion bin which are positioned at the rear side of the cutter head are arranged at the head part of the shield machine body;

the bottom of the compartment breast board is provided with a mud discharge port to communicate the muddy water bin with the air cushion bin;

still including locating pressure differential level gauge in the air cushion storehouse, locate the tuning fork level gauge in the outside of air cushion storehouse, with send mud pipeline and the mud pump of air cushion storehouse intercommunication, install send mud ball valve on the mud pipeline, with the mud pipe way and the mud pump of air cushion storehouse intercommunication, install row mud ball valve on the mud pipe way and with the air balance system of air cushion storehouse intercommunication.

Drawings

Fig. 1 is a schematic structural view of a deep layer storage and drainage tunnel shield machine in a working well.

Fig. 2 is a schematic structural diagram of a muddy water extending device in the deep layer storage and drainage tunnel shield machine of the present invention.

Fig. 3 is a schematic structural view of a steel wire brush at a shield tail of the deep layer storage and drainage tunnel shield machine of the present invention.

Fig. 4 is a schematic structural diagram of a sealing system at a driving mechanism of a cutter head in a deep layer storage and drainage tunnel shield machine according to the present invention.

Fig. 5 is a schematic structural diagram of a grease pipeline at a driving mechanism of a cutter head in the deep layer storage and drainage tunnel shield machine of the invention.

Fig. 6 is a schematic structural diagram of a cooling water pipe at a driving mechanism of a cutter head in a deep storage drainage tunnel shield machine according to the present invention.

Fig. 7 is a schematic structural diagram of a cutter on a cutter head of the deep layer storage and drainage tunnel shield machine.

Fig. 8 is a side view of a cutter on a cutter head of a deep storage drainage tunnel shield machine of the present invention.

Fig. 9 is a schematic structural view of an air cushion chamber liquid level adjusting system of a deep layer storage and drainage tunnel shield machine of the invention.

Fig. 10 is an exploded view of a check valve installed on a cutter head of the deep layer storage and drainage tunnel shield machine of the present invention.

Fig. 11 is a schematic structural view of the wrap sheet of fig. 10.

Fig. 12 is a schematic structural view of the check valve pressing plate of fig. 10.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

Referring to fig. 1, the invention provides a deep storage drainage tunnel shield machine, which solves the problem of reliability of main driving seal and shield tail seal of a slurry balance shield machine under the whole deep burying working condition, the deep storage drainage tunnel shield machine is used for construction of a deep storage drainage tunnel, and can overcome the problems of depth, thickness and small of construction projects, the depth refers to the buried depth of the tunnel, the maximum earth covering on the top of the tunnel reaches 42.07m, the thickness refers to the thickness of a continuous wall, the shield machine needs to pass through 2 underground continuous walls with the thickness of 1 m during construction, the shield machine contains glass fiber ribs, the strength can reach 33.8-36.4 Mpa, the small Mpa refers to the small initial well, the inner diameter of a containment of the initial well is 30m, a circular foundation pit with the depth of 56.3m is dug, and the inner space can only contain a shield host machine. The deep layer storage and drainage tunnel shield machine of the invention is explained with the accompanying drawings.

Referring to fig. 1, a schematic structural diagram of the deep layer storage and drainage tunnel shield machine of the present invention located in a working well is shown. The deep layer storage and drainage tunnel shield machine of the present invention will be described with reference to fig. 1.

As shown in fig. 1, the deep layer storage and drainage tunnel shield machine of the present invention includes a shield machine body 21, a cutter 22, a driving mechanism 23 and a slurry extending device 24, wherein the cutter 22 is installed at the head of the shield machine body 21, the driving mechanism 23 is installed in the shield machine body 21 and is in driving connection with the cutter 22, the driving mechanism 23 can drive the cutter 22 to rotate to realize cutting soil, the slurry extending device 24 is installed behind the shield machine body 21 and is connected with the shield machine body 21, and rollers are arranged at the bottom of the slurry extending device 24 and can move together with the shield machine body 21.

The muddy water extension device 24 is arranged behind the shield machine body 21, a muddy water system at the tail of the shield machine body can be arranged on the ground outside a working well (or an initial well), so that the shield machine can be started in a split mode, the shield machine can be suitable for small-sized working wells, in addition, the bottom of the muddy water extension device 24 is provided with the roller, and the muddy water extension device can move forwards along with the shield machine body through the roller without influencing the normal construction of the shield machine.

In an embodiment of the present invention, as shown in fig. 1 and 2, the muddy water extending device 24 comprises a bracket 241, a hard pipe 242 disposed on the bracket 241, and a hose connected to the hard pipe 242, wherein the bracket 241 is provided with rollers 243 at the bottom thereof, the other end of the hard pipe 242 is connected to the shield machine body, and the other end of the hose is connected to the muddy water system. The muddy water system can be placed on the ground when the shield tunneling machine starts, a pipe hoop is arranged on the bracket 241, the hard pipe 242 is fixedly connected through the pipe hoop, and the structural stability of the hard pipe 242 can be improved. In order to facilitate the carriage 241 to travel, a travel rail is provided in the tunnel, and the roller 243 is slidably provided on the travel rail. When the shield tunneling machine is propelled forwards, the hard pipe is directly connected to the shield tunneling machine and is dragged forwards by the shield tunneling machine.

In an embodiment of the present invention, as shown in fig. 1 and 3, a plurality of wire brushes 251 are disposed at the tail of the shield tunneling machine body 21, a grease cavity 252 is formed between two adjacent wire brushes 251, and sealing grease is injected into the grease cavity 252.

When the shield machine is tunneling forwards, the duct piece 31 is assembled at the tail part of the shield machine body 21, a plurality of steel wire brushes 251 and sealing grease are arranged between the duct piece 31 and the tail part of the shield machine body 21 for sealing, and the phenomenon that slurry injected from the outer side of the shield machine body 21 flows into the shield machine body 21 is avoided.

Furthermore, the problems that the volume of a grease cavity cannot be distinguished due to the fact that the total amount of injected grease is controlled in the prior art, and then the phenomenon that slurry returns due to too little grease at certain positions, even the steel wire brush is damaged, the sealing performance is reduced and the like are solved. According to the invention, a plurality of oil injection pipelines 253 are buried at the shield tail of a shield machine body 21, a plurality of distance sensors 254 are arranged at the inner side of the shield tail of the shield machine body 21, the plurality of oil injection pipelines 253 are connected with a grease pump 255 and are connected with the distance sensors 254 and the grease pump 255 through a first controller, wherein a plurality of oil injection pipelines 253 are correspondingly arranged at each grease cavity 252, the distance sensors 254 are correspondingly arranged with the oil injection pipelines 253, and the distance sensors 254 are used for detecting the distance between the inner side of the shield tail of the shield machine body 21 and corresponding pipe pieces 31; the first controller controls the corresponding grease pump 255 to operate according to the distance detected by the distance sensor 254 to adjust the grease injection amount at the corresponding oil injection pipeline 253.

The duct piece 31 is annular, the shield machine body 21 is columnar, a grease cavity 252 formed between two adjacent steel wire brushes 251 is also annular, a plurality of grease injection pipelines 253 are arranged corresponding to the annular grease cavity 252, the grease injection pipelines 253 are arranged at intervals along the shield machine body 21, each grease injection pipeline 253 is arranged corresponding to one distance sensor 254, preferably, the grease injection pipelines 253 and the corresponding distance sensors 254 are positioned on the same straight line, the distance between the duct piece and the inner side of the shield tail is detected through the distance sensors 254, so that the change of the gap of the shield tail can be found in time, the grease injection amount of the corresponding position can be adjusted according to the real-time change of the gap of the shield tail by the first controller, more grease is injected into the position where the volume of the grease cavity is increased, less grease is injected into the position where the volume is decreased, the grease in the grease cavity is ensured to be sufficient, and the sealing effect is ensured. The first controller can also control the sequence of injecting the grease, and the grease injection at the position with large volume of the grease cavity is preferentially met, and the grease injection at the position with small volume of the grease cavity is met.

Particularly, when the shield machine turns or tunnels on an upper slope and a lower slope, the volumes of the grease cavities are inconsistent, the first controller can detect the clearance of the shield tail in real time through the distance sensor, so that the volumes of the grease cavities are calculated, the injection amount and the injection sequence of the grease are determined, and the grease is injected into the corresponding oil injection pipeline through the grease pump, so that the self-adaptive shield tail grease injection is realized.

Furthermore, four steel wire brushes 251 are arranged at the shield tail of the shield machine body 21, and a steel plate brush 256 is arranged at the shield tail of the shield machine body 21, so that four grease cavities 252 are formed, and the sealing performance at the shield tail is improved.

In an embodiment of the present invention, as shown in fig. 1 and 4, a plurality of sealing rings 231 are disposed at a connection portion between the driving mechanism 23 and the shield tunneling machine body 21, a sealing cavity is formed between two adjacent sealing rings 231, grease is injected into the sealing cavity, and the connection portion between the driving mechanism 23 and the shield tunneling machine body 21 is sealed by the grease and the sealing rings, so as to prevent mud at the cutter head from entering the shield tunneling machine body 21.

Further, the invention also comprises a grease storage barrel 261 arranged in the shield tunneling machine body, a grease filling pump 262 connected with the grease storage barrel 261, an electromagnetic oil feeder 263 connected with the grease filling pump 262 and arranged corresponding to each sealed cavity, a grease distributor 264 connected between the electromagnetic oil feeder 263 and the sealed cavity, a pressure detector 265 arranged on the sealed cavity and a second controller connected with the electromagnetic oil feeder 263 and the pressure detector 265;

the electromagnetic oil feeder 263 is also connected with the grease storage barrel 261 through an overflow valve 267;

the pressure detector 265 is used for detecting the grease pressure value in the corresponding sealing cavity;

the second controller controls and adjusts the operation of the corresponding electromagnetic oil feeder 263 according to the grease pressure value detected by the pressure detector 265, so as to control the grease pressure in the grease cavity.

The grease filling pump 262 is connected with the grease bucket 261 and the electromagnetic oil feeder 263 through a pipeline, and the grease filling pump 262 is operated to pump the grease in the grease bucket 261 into the electromagnetic oil feeder 263. The electromagnetic oil feeder 263 is connected with the grease distributor 264 through a pipeline, the grease distributor 264 is connected with the sealed cavity through a pipeline, grease is injected into the sealed cavity through the electromagnetic oil feeder 263 and the grease distributor 264, and the electromagnetic oil feeder 263 can accurately control the grease injection amount in the sealed cavity. The electromagnetic oil feeder 263 is connected to the overflow valve 267 and the grease storage tank 261 via a return line, so that grease that has been discharged from the electromagnetic oil feeder 263 can flow into the grease storage tank 261 via the return line and the overflow valve 267.

Preferably, a grease target pressure value of each sealed cavity and a grease filling amount of each electromagnetic oil feeder 263 are preset in the second controller, a grease filling pump is started, the second controller controls the electromagnetic oil feeders to fill grease into the sealed cavities according to the grease target pressure values and the grease filling amounts, the pressure detector can feed back actual pressure values in the sealed cavities to the second controller in real time, the second controller compares the pressure values fed back by the pressure detector with the preset grease target pressure values, the grease filling amount is reasonably adjusted through the electromagnetic oil feeders, and the problem of insufficient pressure is quickly solved. When the actual pressure value in a certain sealing cavity is larger than the target pressure value of the grease, the second controller closes the corresponding electromagnetic oil feeder and stops supplying the grease, and when the actual pressure value is smaller than the target pressure value of the grease, the second controller opens the electromagnetic oil feeder to recover supplying the grease. When the actual pressure value of a certain sealed cavity is far smaller than the target pressure value of the grease, the second controller adjusts the filling proportion of each electromagnetic oil feeder, oil is preferentially supplied to the sealed cavity with the larger pressure difference value, the filling amount of the grease in the rest sealed cavities is reduced until the pressure value approaches to the target pressure value of the grease, and the original preset filling amount of each electromagnetic oil feeder is recovered. When the pumping flow is larger than the required filling amount, the overflow valve is opened by the second controller, so that the grease can flow back to the grease storage barrel through the oil return pipeline and the overflow valve, and the overall consumption of the grease is reduced.

The second controller can adjust the grease filling amount according to the actual pressure value of grease in each sealing cavity, so that accurate stock control of grease filling is realized, the use amount of grease is reduced while the sealing state of the driving mechanism is ensured to be good, and the construction cost is saved.

Furthermore, the driving mechanism is a motor and a driving shaft, the driving shaft is connected with an end sealing plate at the head of the shield tunneling machine body 21 through a bearing, three sealing rings and a plane tooth-shaped sealing gasket are sleeved on the driving shaft close to the end sealing plate, and three sealing cavities are formed between the three sealing rings and the plane tooth-shaped sealing gasket.

In one embodiment of the present invention, as shown in fig. 5 and fig. 6, an outer sealing ring 271 is sleeved outside a sealing ring 231 of a driving mechanism, a grease pipeline 272 is embedded in the outer sealing ring 271, an annular water tank 273 which is recessed inwards is arranged on an inner side surface of the outer sealing ring 271, a first joint 274 is arranged on the inner side surface of the outer sealing ring 271 corresponding to the grease pipeline 272, and the first joint 274 is arranged in the annular water tank 273;

a water jacket clapboard 275 is arranged between the annular water tank 273 of the outer sealing ring 271 and the sealing ring 231, and a closed water storage space is formed between the water jacket clapboard 275 and the annular water tank 273;

the end of the first joint 274 abuts against the water jacket partition plate 275, and a sealing block 276 is arranged at the joint of the first joint 274, the annular water tank 273 and the water jacket partition plate 275;

the first joint 274 is connected with a second joint 277, and the second joint 277 is partially inserted into the water jacket partition 275 and is in sealing connection with the water jacket partition 275;

the grease line 272 communicates with the corresponding sealed chambers through the first connector 274 and the second connector 277.

Further, a cooling water pipe 278 communicated with the annular water tank 273 is further arranged in the outer sealing ring 271. The cooling water pipe 278 has two passages, one is a water inlet pipe and the other is a water outlet pipe. The cooling water pipe 278 is radially arranged along the outer sealing ring 271, two sealing rings are arranged on the cooling water pipe 278 to ensure the sealing effect, the joint of the cooling water pipe is also provided with the sealing rings, the cooling water pipe is radially arranged, the access distance is short, the controllability is high, and the risk is small.

The first joint and the second joint are installed in a split type welding mode, the first joint is welded firstly to ensure that a welding seam between the first joint and the outer sealing ring is compact, then the water jacket partition plate 275 is installed and welded, and finally the second joint is welded.

Set up in the cooling water lets in annular water tank, utilize the cooling water can cool down the sealing washer, can ensure the operating temperature of sealing washer.

In one embodiment of the present invention, as shown in fig. 1 and 7, a cutter is mounted on the cutter head 22, and the cutter comprises a cutter body 221 and alloy blades 222 attached to both sides of the top of the cutter body 221, and the alloy blades 222 form a cutting tip.

As shown in fig. 8, the alloy blades 222 are disposed at the upper left and right corners of the cutter body 221, the ends of the alloy blades 222 extend to both sides of the cutter body 221 and are located outside the top of the cutter body 221, a certain angle is formed between the alloy blades 222, the cutting tip formed by the alloy blades preferentially contacts the workpiece, and the cut residue can be smoothly discharged from the periphery of the cutting edge. When the cutting tool is used for cutting plain concrete containing glass fiber ribs, risks such as increase of torque of a cutter head, increase of temperature of the cutter head and the like can be effectively avoided. When the shield machine passes through the concrete wall and enters a soil layer for cutting, the cutter can still be used as a preceding cutter to cut the soil body into blocks, and good cutting conditions are created for the soft soil scraper.

Further, as shown in fig. 10, in order to ensure that the muddy water flushing port of the cutterhead is kept smooth when passing through the underground diaphragm wall device and is not blocked by concrete fragments, a check valve 29 is arranged at the muddy water flushing port of the cutterhead, and the check valve 29 comprises a base 291, a rubber ring 292, a wrapping plate 293, a cushion 294, a check valve pressing plate 295, a pressing plate 296 and bolts 297, wherein the base 291, the rubber ring 292, the wrapping plate 293, the cushion 294, the check valve pressing plate 295 and the pressing plate 296 are tightly connected together through four bolts 297, and corresponding bolt holes are arranged at the edges of the base 291, the rubber ring 292, the wrapping plate 293, the cushion 294, the check valve pressing plate 295 and the pressing plate 296. As shown in fig. 11 and 12, the middle of the wrapping plate 293 is provided with three sludge discharge holes 2931, and the four bolt holes 2932 are arranged at the edge of the wrapping plate 293, so that the three sludge discharge holes 2931 are uniformly arranged in the middle of the wrapping plate 293, and the aperture of each sludge discharge hole 2931 can be set according to the particle size of the largest particles in the muddy water, thereby preventing the one-way valve from being blocked. The middle part of the one-way valve pressing plate 295 is provided with an opening 2951, the one-way valve pressing plate 295 is made of rubber materials, through the arrangement of the opening 2951, when muddy water passes through, the opening 2951 of the one-way valve pressing plate 295 is expanded by the muddy water to be circular, and the edge of the opening 2951 is arranged close to the edge of the one-way valve pressing plate 295, so that the size of the opening formed when the opening 2951 is opened is large, and the one-way valve can be prevented from being blocked by large-particle impurities in the air cushion bin during operation.

In one embodiment of the present invention, as shown in fig. 9, the head of the shield machine body 21 is provided with a mud water compartment 211, a compartment breast plate 212 and an air cushion compartment 213, which are located at the rear side of the cutter head 22;

the bottom of the compartment breast board 212 is provided with a mud discharge port to communicate the muddy water compartment 211 with the air cushion compartment 213;

the air-cushion type sludge pump further comprises a differential pressure liquid level meter 281 arranged in the air cushion bin 213, a tuning fork liquid level meter 282 arranged outside the air cushion bin 213, a sludge conveying pipeline 283 and a sludge conveying pump 284 communicated with the air cushion bin 213, a sludge inlet ball valve 285 arranged on the sludge conveying pipeline 283, a sludge discharge pipeline 286 and a sludge discharge pump 287 communicated with the air cushion bin 213, a sludge discharge ball valve 288 arranged on the sludge discharge pipeline 286 and an air balance system 289 communicated with the air cushion bin 213.

The differential pressure liquid level meter 281 and the tuning fork liquid level meter 282 are used for detecting the liquid level in the air cushion bin 213, when the liquid level in the air cushion bin 213 is normal and has no obvious fluctuation, the mud-water slow flow system performs stable circulation, mud water is injected into the air cushion bin 213 through the mud conveying pipeline 283, the mud conveying pump 284 and the mud inlet ball valve 285, and the mud inlet flow rate and the cut earth volume are equal to the mud discharge flow rate; when the differential pressure liquid level meter 281 detects that the liquid level in the air cushion bin 213 rises in a short time, and a tuning fork liquid level meter 282 high liquid level alarm signal triggers, a liquid level signal is fed back to the mud water control system, the mud water control system controls the mud pump 284 to reduce the rotating speed, reduces the mud feeding flow, controls the mud pump 287 to increase the rotating speed, increases the mud discharging flow, and when the differential pressure liquid level meter 281 detects that the liquid level returns to normal, the mud water control system controls the mud pump 284 and the mud pump 287 to return to the original rotating speed state. When the differential pressure liquid level meter 281 detects that the liquid level in the air cushion bin 213 is reduced in a short time, and a tuning fork liquid level meter 282 is triggered by a low liquid level alarm signal, a liquid level signal is fed back to the mud water control system, the mud water control system controls the mud pump 284 to increase the rotating speed, the mud pump flow is increased, the mud pump 287 is controlled to reduce the rotating speed, the mud pump flow is reduced, and when the differential pressure liquid level meter 281 detects that the liquid level is recovered normally, the mud pump 284 and the mud pump 287 are controlled to recover to the original rotating speed state.

The muddy water control system can be used as an auxiliary operation means without being in a time-keeping state by manually switching the operation state, and the liquid level and the whole shield machine are in alarm interlocking, and a shutdown mechanism is independently set, so that the shield machine is ensured to be switched off under the condition of extreme change of the liquid level.

While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments should not be construed as limitations of the invention, except insofar as the following claims are interpreted to cover the invention.

Claims (10)

1. The utility model provides a deep regulation drainage tunnel shield constructs machine which characterized in that includes:

a shield tunneling machine body;

the cutter head is arranged at the head part of the shield tunneling machine body;

the driving mechanism is arranged in the shield tunneling machine body and is in driving connection with the cutter head; and

the muddy water extending device is arranged behind the shield machine body and connected with the shield machine body, and the bottom of the muddy water extending device is provided with rollers which can move along with the shield machine body.

2. The deep storage and drainage tunnel shield machine of claim 1, wherein the muddy water extending device comprises a bracket, a hard pipe arranged on the bracket and a hose connected with the hard pipe, the roller is arranged at the bottom of the bracket, the other end of the hard pipe is connected with the shield machine body, and the other end of the hose is connected with a muddy water system.

3. The deep storage and drainage tunnel shield machine of claim 1, wherein a plurality of steel wire brushes are arranged at the tail part of the shield machine body, and a grease cavity is formed between two adjacent steel wire brushes;

and sealing grease is injected into the grease cavity.

4. The deep storage drainage tunnel shield machine of claim 3, further comprising a plurality of oil injection pipelines buried at the shield tail of the shield machine body, a plurality of distance sensors installed inside the shield tail of the shield machine body, a grease pump connected with the oil injection pipelines, and a first controller connected with both the distance sensors and the grease pump;

a plurality of oil injection pipelines are correspondingly arranged at each grease cavity;

the distance sensor is arranged corresponding to the oil injection pipeline and used for detecting the distance between the inner side of the shield tail of the shield tunneling machine body and the corresponding pipe piece;

and the first controller controls the corresponding grease pump to operate according to the distance detected by the distance sensor so as to adjust the grease injection amount at the corresponding oil injection pipeline.

5. The deep storage drainage tunnel shield machine of claim 1, wherein a plurality of sealing rings are arranged at the joint of the driving mechanism and the shield machine body, and a sealing cavity is formed between two adjacent sealing rings;

grease is injected into the sealing cavity.

6. The deep layer storage and drainage tunnel shield machine of claim 5, further comprising a grease storage barrel arranged in the shield machine body, a grease filling pump connected with the grease storage barrel, electromagnetic oil feeders connected with the grease filling pump and arranged corresponding to the respective sealed cavities, a grease distributor connected between the electromagnetic oil feeders and the sealed cavities, a pressure detector mounted on the sealed cavities, and a second controller connected with the electromagnetic oil feeders and the pressure detector;

the electromagnetic oil feeder is also connected with the grease storage barrel through an overflow valve;

the pressure detector is used for detecting the grease pressure value in the corresponding sealing cavity;

and the second controller controls and adjusts the operation of the corresponding electromagnetic oil feeder according to the grease pressure value detected by the pressure detector so as to control the grease pressure in the grease cavity.

7. The deep storage and drainage tunnel shield machine according to claim 5, wherein an outer sealing ring is sleeved outside a sealing ring of the driving mechanism, a grease pipeline is embedded in the outer sealing ring, an annular water tank which is recessed inwards is arranged on the inner side surface of the outer sealing ring, a first joint is arranged on the inner side surface of the outer sealing ring corresponding to the grease pipeline, and the first joint is arranged in the annular water tank;

a water jacket clapboard is arranged between the annular water tank of the outer sealing ring and the sealing ring, and a closed water storage space is formed between the water jacket clapboard and the annular water tank;

the end part of the first joint is abutted against the water jacket partition plate, and a sealing block is arranged at the joint of the first joint, the annular water tank and the water jacket partition plate;

the first joint is connected with a second joint, and the second joint part is inserted into the water jacket partition plate and is connected with the water jacket partition plate in a sealing manner;

the grease pipeline penetrates through the first joint and the second joint and is communicated with the corresponding sealing cavity.

8. The deep storage drainage tunnel shield machine of claim 7, wherein a cooling water pipe communicated with the annular water tank is further arranged in the outer sealing ring.

9. The deep storage drainage tunnel shield machine of claim 1, wherein the cutter head is mounted with a cutting tool, the cutting tool comprising a cutter body and alloy blades attached to both sides of the top of the cutter body, the alloy blades forming a cutting tip.

10. The deep storage drainage tunnel shield machine of claim 1, wherein the head of the shield machine body is provided with a muddy water bin, a compartment breast board and an air cushion bin which are positioned at the rear side of the cutter;

the bottom of the compartment breast board is provided with a mud discharge port to communicate the muddy water bin with the air cushion bin;

still including locating pressure differential level gauge in the air cushion storehouse, locate the tuning fork level gauge in the outside of air cushion storehouse, with send mud pipeline and the mud pump of air cushion storehouse intercommunication, install send mud ball valve on the mud pipeline, with the mud pipe way and the mud pump of air cushion storehouse intercommunication, install row mud ball valve on the mud pipe way and with the air balance system of air cushion storehouse intercommunication.

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