Deep layer regulation and drainage tunnel shield machine

Abstract

The present application relates to a kind of deep regulation and storage drainage tunnel shield machine, comprising: shield machine body;The cutterhead of installing at the head of the shield machine body;Driving mechanism is installed in the shield machine body and is driven connection with the cutterhead;And set at the rear of the shield machine body and is connected with the shield machine body slurry extension device, the bottom of the slurry extension device is equipped with gyro wheel, can move together with the shield machine body.The shield machine of the present application can be applied to small size working well, by setting slurry extension device at the rear of shield machine body, the slurry system of the tail of shield machine body can be placed on the ground outside working well, the split start of shield machine is realized, and the bottom of slurry extension system has gyro wheel, can move forward together with the tunneling of shield machine body, and will not affect the normal tunneling of shield machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shield construction engineering, in particular to a deep regulation and storage drainage tunnel shield machine. BACKGROUND

[0002] In recent years, due to climate change, extreme rainfall has become increasingly frequent worldwide. Waterlogging and combined overflow have become a common problem. In order to solve urban waterlogging and build a rain and sewage separation system, deep regulation and storage tunnel engineering projects have been implemented in many cities at home and abroad.

[0003] Due to the limited space on the ground in the city, the size of the working well is limited, and the small-size working well cannot accommodate the slurry balance shield machine and the slurry system at the tail of the shield machine, so there is an urgent need to provide a new solution. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art, provide a deep regulation and storage drainage tunnel shield machine, and solve the problem that the small-size working well cannot accommodate the slurry balance shield machine and the slurry system at the tail of the shield machine.

[0005] The technical solution to achieve the above-mentioned purpose is:

[0006] The present application provides a deep regulation and storage drainage tunnel shield machine, comprising:

[0007] a shield machine body;

[0008] a cutterhead mounted at the head of the shield machine body;

[0009] a drive mechanism mounted in the shield machine body and drivingly connected to the cutterhead; and

[0010] a slurry extension device provided at the rear of the shield machine body and connected to the shield machine body, the bottom of the slurry extension device being provided with a roller, which can move together with the shield machine body.

[0011] The shield machine of the present application can be applied to a small-size working well, and by providing a slurry extension device at the rear of the shield machine body, the slurry system at the tail of the shield machine body can be placed on the ground outside the working well, realizing the split launching of the shield machine, and the bottom of the slurry extension system is provided with a roller, which can move forward together with the tunneling of the shield machine body without affecting the normal tunneling of the shield machine.

[0012] Further improvement of the deep regulation and storage drainage tunnel shield machine of the present application is that the slurry extension device comprises a bracket, a hard pipe placed on the bracket, and a soft pipe connected to the hard pipe, the bottom of the bracket is provided with the roller, the other end of the hard pipe is connected to the shield machine body, and the other end of the soft pipe is connected to the slurry system.

[0013] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a plurality of steel wire brushes are arranged at the tail of the shield machine body, and a grease cavity is formed between two adjacent steel wire brushes.

[0014] The grease cavity is filled with sealing grease.

[0015] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a plurality of oil injection pipelines are arranged at the shield tail of the shield machine body, a plurality of distance sensors are arranged on the inner side of the shield tail of the shield machine body, a grease pump is connected with the oil injection pipelines, and a first controller is connected with the distance sensors and the grease pump.

[0016] A plurality of oil injection pipelines are arranged at each grease cavity.

[0017] The distance sensors are arranged corresponding to the oil injection pipelines, and the distance sensors are used for detecting the distance between the inner side of the shield tail of the shield machine body and the corresponding pipe segment.

[0018] The first controller controls the operation of the corresponding grease pump according to the distance detected by the distance sensor, so as to adjust the amount of grease injection at the corresponding oil injection pipeline.

[0019] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a plurality of sealing rings are arranged at the connection between the driving mechanism and the shield machine body, and a sealing cavity is formed between two adjacent sealing rings.

[0020] The sealing cavity is filled with grease.

[0021] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a grease storage barrel is arranged in the shield machine body, a grease filling pump is connected with the grease storage barrel, an electromagnetic oil feeder is connected with the grease filling pump and arranged corresponding to each sealing cavity, a grease distributor is connected between the electromagnetic oil feeder and the sealing cavity, a pressure detector is arranged on the sealing cavity, and a second controller is connected with the electromagnetic oil feeder and the pressure detector.

[0022] The electromagnetic oil feeder is further connected with the grease storage barrel through an overflow valve.

[0023] The pressure detector is used for detecting the grease pressure value in the corresponding sealing cavity.

[0024] The second controller controls 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 sealing cavity.

[0025] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that an outer sealing ring is arranged outside the sealing ring of the driving mechanism, an oil pipe is arranged in the outer sealing ring, an annular water tank is arranged on the inner side of the outer sealing ring, a first joint is arranged on the inner side of the outer sealing ring and corresponds to the oil pipe, and the first joint is arranged in the annular water tank.

[0026] A water jacket partition plate 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 partition plate and the annular water tank.

[0027] The end of the first joint abuts against the water jacket partition plate, and a sealing block is arranged at the connection between the first joint and the annular water tank and the water jacket partition plate.

[0028] A second joint is connected to the first joint, and the second joint is partially arranged in the water jacket partition plate and is sealingly connected to the water jacket partition plate.

[0029] The oil pipe is communicated with the corresponding sealing cavity through the first joint and the second joint.

[0030] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a cooling water pipe is further arranged in the outer sealing ring and is communicated with the annular water tank.

[0031] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a cutting tool is arranged on the cutter head, the cutting tool comprises a cutter body and alloy blades connected to the top of the cutter body on both sides, and the alloy blades form cutting tips.

[0032] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that the head of the shield machine body is provided with a slurry tank located at the rear side of the cutter head, a partition chest plate and an air cushion tank.

[0033] The bottom of the partition chest plate is provided with a sludge discharge port to communicate the slurry tank with the air cushion tank.

[0034] The further improvement of the deep regulation and storage drainage tunnel shield machine lies in that a differential pressure liquid level meter is arranged in the air cushion tank, a tuning fork liquid level meter is arranged outside the air cushion tank, a sludge conveying pipeline and a sludge conveying pump are communicated with the air cushion tank, a sludge inlet ball valve is arranged on the sludge conveying pipeline, a sludge discharge pipeline and a sludge discharge pump are communicated with the air cushion tank, a sludge discharge ball valve is arranged on the sludge discharge pipeline, and an air balance system is communicated with the air cushion tank. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structural schematic view of the deep regulation and storage drainage tunnel shield machine in a working well.

[0036] Figure 2It is a structure schematic view of mud water extension device in deep regulation and storage drainage tunnel shield machine of the present application.

[0037] Figure 3 It is a structure schematic view of steel wire brush at shield tail in deep regulation and storage drainage tunnel shield machine of the present application.

[0038] Figure 4 It is a structure schematic view of sealing system at driving mechanism of cutter head in deep regulation and storage drainage tunnel shield machine of the present application.

[0039] Figure 5 It is a structure schematic view of grease pipeline at driving mechanism of cutter head in deep regulation and storage drainage tunnel shield machine of the present application.

[0040] Figure 6 It is a structure schematic view of cooling water pipe at driving mechanism of cutter head in deep regulation and storage drainage tunnel shield machine of the present application.

[0041] Figure 7 It is a structure schematic view of cutter on cutter head of deep regulation and storage drainage tunnel shield machine of the present application.

[0042] Figure 8 It is a side view of cutter on cutter head of deep regulation and storage drainage tunnel shield machine of the present application.

[0043] Figure 9 It is a structure schematic view of air cushion bin liquid level regulating system of deep regulation and storage drainage tunnel shield machine of the present application.

[0044] Figure 10 It is an exploded structure schematic view of one-way valve installed on cutter head of deep regulation and storage drainage tunnel shield machine of the present application.

[0045] Figure 11 It is a structure schematic view of middle wrapping board. Figure 10

[0046] It is a structure schematic view of one-way valve pressing plate in the middle. Figure 12 DETAILED DESCRIPTION Figure 10 The present application will be further described below in combination with the drawings and specific embodiments.

[0047] Reference is made to

[0048] Reference is made to Figure 1 ​The application provides a deep regulation and storage drainage tunnel shield machine, which solves the reliability problems of the main drive sealing and the shield tail sealing of the slurry balance shield machine under the whole deep buried working condition, and is used for the construction of the deep regulation and storage drainage tunnel, and can overcome the problems of "deep, thick and small" of the construction project. The deep refers to the deep buried depth of the tunnel, the maximum earth covering of the tunnel top reaches 42.07 m, the thick refers to the thick of the continuous wall, the shield machine needs to pass through two 1 m thick underground continuous walls containing glass fiber bars, the strength of which can reach 33.8 Mpa-36.4 Mpa, and the small refers to the small of the starting well, the enclosed diameter of the starting well is 30 m, the deep digging is in a 56.3 m circular foundation pit, and the internal space can only accommodate the shield main machine. The deep regulation and storage drainage tunnel shield machine is described below in combination with the drawings.

[0049] Referring to Figure 1 , a structural schematic view of the deep regulation and storage drainage tunnel shield machine of the application in a working well is shown. The deep regulation and storage drainage tunnel shield machine of the application is described below in combination with Figure 1 .

[0050] As Figure 1 and shown, the deep regulation and storage drainage tunnel shield machine of the application comprises a shield machine body 21, a cutter head 22, a driving mechanism 23 and a slurry extension device 24, the cutter head 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 drivingly connected with the cutter head 22, the driving mechanism 23 can drive the cutter head 22 to rotate to realize cutting the soil body, and the slurry extension device 24 is arranged at the back of the shield machine body 21 and is connected with the shield machine body 21, the bottom of the slurry extension device 24 is provided with a roller and can move together with the shield machine body 21.

[0051] The slurry extension device 24 is arranged at the back of the shield machine body 21, can place the slurry system at the tail of the shield machine body on the ground outside the working well (or the starting well), so that the shield machine can be started in parts, thereby the shield machine can be suitable for the working well with small size, in addition, the bottom of the slurry extension device 24 is provided with a roller, the slurry extension device can move forward together with the shield machine body through the roller, and the normal construction of the shield machine is not affected.

[0052] In one specific embodiment of the application, as Figure 1 and Figure 2As shown, the slurry extension device 24 comprises a bracket 241, a hard pipe 242 placed on the bracket 241, and a soft pipe connected with the hard pipe 242. The bottom of the bracket 241 is provided with a roller 243, the other end of the hard pipe 242 is connected with the shield machine body, and the other end of the soft pipe is connected with the slurry system. The slurry system can be placed on the ground when the shield machine starts, the bracket 241 is provided with a pipe clamp, the hard pipe 242 is fixedly connected through the pipe clamp, and the structural stability of the hard pipe 242 can be improved. In order to facilitate the walking of the bracket 241, a walking track is arranged in the tunnel, and the roller 243 is slidably arranged on the walking track. When the shield machine advances, the hard pipe is directly connected with the shield machine and is dragged by the shield machine to advance.

[0053] In one specific embodiment of the present application, as shown in Figure 1 and Figure 3 As shown, a plurality of steel wire brushes 251 are arranged at the tail of the shield machine body 21, and an oil chamber 252 is formed between two adjacent steel wire brushes 251. The oil chamber 252 is filled with sealing grease.

[0054] When the shield machine advances, a pipe segment 31 is assembled at the tail of the shield machine body 21. The pipe segment 31 and the tail of the shield machine body 21 are sealed by the plurality of steel wire brushes 251 and the sealing grease, so as to prevent the slurry injected outside the shield machine body 21 from flowing into the shield machine body 21.

[0055] Further, in order to avoid the problem that the total amount of the injected grease cannot be controlled in the prior art, the volume of the oil chamber cannot be distinguished, and the phenomenon of insufficient grease in some positions and slurry return occurs, and even the steel wire brush is damaged and the sealing performance is reduced. In the present application, a plurality of oil injection pipelines 253 are arranged at the tail of the shield machine body 21, and a plurality of distance sensors 254 are arranged inside the tail of the shield machine body 21. The plurality of oil injection pipelines 253 are connected with a grease pump 255, and the first controller is connected with the distance sensor 254 and the grease pump 255. Each oil injection pipeline 253 is arranged corresponding to each oil chamber 252, and the distance sensor 254 is arranged corresponding to the oil injection pipeline 253. The distance sensor 254 is used to detect the distance between the inside of the tail of the shield machine body 21 and the corresponding pipe segment 31. The first controller controls the operation of the corresponding grease pump 255 according to the distance detected by the distance sensor 254, so as to adjust the amount of the injected grease at the corresponding oil injection pipeline 253.

[0056] The pipe piece 31 is annular, the shield machine body 21 is columnar, the grease cavity 252 formed between the adjacent two steel wire brushes 251 is also annular, a plurality of oil injection pipelines 253 corresponding to the annular grease cavity 252 are arranged, the oil injection pipelines 253 are arranged at intervals along the shield machine body 21, each oil injection pipeline 253 is arranged corresponding to a distance sensor 254, preferably, the oil injection pipeline 253 and the corresponding distance sensor 254 are located on the same straight line, the distance between the pipe piece and the inner side of the shield tail is detected through the distance sensor 254, so that the change of the shield tail gap can be found in time, the first controller can adjust the grease injection amount of the corresponding position according to the real-time change of the shield tail gap, more grease is injected at the position where the volume of the grease cavity is large, and less grease is injected at the position where the volume of the grease cavity is small, so that the grease in the grease cavity is sufficient, and the sealing effect is ensured. The first controller can also control the order of injecting the grease, and the grease injection of the position with a large volume of the grease cavity is preferentially satisfied, and then the grease injection of the position with a small volume of the grease cavity is satisfied.

[0057] In particular, when the shield machine turns or excavates uphill or downhill, the volumes of the grease cavities at all positions are inconsistent, the first controller of the present application can detect the shield tail gap in real time through the distance sensor, so as to calculate the volumes of the grease cavities at all positions, and then determine the injection amount and the injection order of the grease, and then inject the grease into the corresponding oil injection pipeline through the grease pump, so that the adaptive shield tail grease injection is realized.

[0058] Further, the steel wire brushes 251 arranged at the shield tail of the shield machine body 21 are four, and the steel plate brush 256 is also arranged at the shield tail of the shield machine body 21, so that four grease cavities 252 are formed, and the sealing property of the shield tail is improved.

[0059] In one specific embodiment of the present application, as shown in Figure 1 and Figure 4 The connection between the driving mechanism 23 and the shield machine body 21 is provided with a plurality of sealing rings 231, a sealing cavity is formed between the adjacent two sealing rings 231, and grease is injected into the sealing cavity, so that the connection between the driving mechanism 23 and the shield machine body 21 is sealed through the grease and the sealing rings, and the mud at the cutter head is prevented from entering the shield machine body 21.

[0060] Further, the present application also includes a grease storage barrel 261 arranged in the shield machine body, a grease injection pump 262 connected with the grease storage barrel 261, an electromagnetic oil feeder 263 connected with the grease injection pump 262 and corresponding to each sealing cavity, a grease distributor 264 connected between the electromagnetic oil feeder 263 and the sealing cavity, a pressure detector 265 mounted on the sealing cavity, and a second controller connected with the electromagnetic oil feeder 263 and the pressure detector 265.

[0061] The electromagnetic oil feeder 263 is also connected with the grease storage barrel 261 through an overflow valve 267.

[0062] The pressure detector 265 is used to detect the grease pressure value in the corresponding sealed cavity;

[0063] The second controller controls the operation of the corresponding electromagnetic grease 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.

[0064] The grease filling pump 262 is connected with the grease tank 261 and the electromagnetic grease feeder 263 through pipelines, and the operation of the grease filling pump 262 can pump the grease in the grease tank 261 into the electromagnetic grease feeder 263. The electromagnetic grease feeder 263 is connected with the grease distributor 264 through pipelines, and the grease distributor 264 is connected with the sealed cavity through pipelines. The grease is injected into the sealed cavity through the electromagnetic grease feeder 263 and the grease distributor 264, and the electromagnetic grease feeder 263 can accurately control the injection amount of the grease in the sealed cavity. The electromagnetic grease feeder 263 is connected with the overflow valve 267 and the grease storage tank 261 through the return pipeline, so that the excess grease at the electromagnetic grease feeder 263 can flow into the grease storage tank 261 through the return pipeline and the overflow valve 267.

[0065] Preferably, the grease target pressure value of each sealed cavity and the grease injection amount of each electromagnetic grease feeder 263 are preset in the second controller. The grease filling pump is started, and the second controller controls the electromagnetic grease feeder to inject the grease into the sealed cavity according to the grease target pressure value and the grease injection amount. The pressure detector can feed back the actual pressure value in the sealed cavity to the second controller in real time. The second controller compares the pressure value fed back by the pressure detector with the preset grease target pressure value, adjusts the grease injection amount through the electromagnetic grease feeder, and realizes the problem of quickly making up the insufficient pressure. When the actual pressure value in a sealed cavity is greater than the grease target pressure value, the second controller closes the corresponding electromagnetic grease feeder to stop supplying the grease. When the actual pressure value is less than the grease target pressure value, the second controller opens the electromagnetic grease feeder to restore the supply of the grease. When the actual pressure value of a sealed cavity is much smaller than the grease target pressure value, the second controller adjusts the injection proportion of each electromagnetic grease feeder, preferentially supplies the oil to the sealed cavity with a larger pressure difference, reduces the injection amount of the grease in the remaining sealed cavities, and restores the original preset injection amount of each electromagnetic grease feeder until the pressure value tends to the grease target pressure value. When the pumping flow is greater than the required injection amount, the second controller opens the overflow valve, so that the grease can flow back to the grease storage tank through the return pipeline and the overflow valve, thereby reducing the overall consumption of the grease.

[0066] The second controller of the present application can adjust the grease injection amount according to the actual grease pressure value of each sealed cavity, realize accurate control of the grease injection, ensure the good sealing state of the driving mechanism, reduce the use amount of the grease, and save the construction cost.

[0067] Further, the driving mechanism is an electric motor and a driving shaft, the driving shaft is connected with an end sealing plate of the head of the shield tunneling machine body 21 through a bearing, three sealing rings and a flat tooth-shaped sealing pad are sleeved on the driving shaft close to the end sealing plate, three sealing cavities are formed between the three sealing rings and the flat tooth-shaped sealing pad.

[0068] In one specific embodiment of the present application, the driving mechanism is connected with the shield tunneling machine body 21 through the sealing ring 231, and the sealing ring 231 is connected with the end sealing plate of the head of the shield tunneling machine body 21 through the sealing ring 231. Figure 5 and Figure 6 As shown in the figure, an outer sealing ring 271 is sleeved outside the sealing ring 231 of the driving mechanism, the outer sealing ring 271 is embedded with a grease pipeline 272, the inner side of the outer sealing ring 271 is provided with an inwardly recessed annular water groove 273, the inner side of the outer sealing ring 271 is provided with a first joint 274 corresponding to the grease pipeline 272, and the first joint 274 is arranged in the annular water groove 273.

[0069] A water jacket partition plate 275 is arranged between the annular water groove 273 of the outer sealing ring 271 and the sealing ring 231, and a closed water storage space is formed between the water jacket partition plate 275 and the annular water groove 273.

[0070] The end of the first joint 274 abuts against the water jacket partition plate 275, and a sealing block 276 is arranged at the connection between the first joint 274 and the annular water groove 273 and the water jacket partition plate 275.

[0071] The first joint 274 is connected with a second joint 277, and the second joint 277 is partially arranged in the water jacket partition plate 275 and is sealingly connected with the water jacket partition plate 275.

[0072] The grease pipeline 272 passes through the first joint 274 and the second joint 277 and is connected with the corresponding sealing cavity.

[0073] Further, the outer sealing ring 271 is further provided with a cooling water pipe 278 connected with the annular water groove 273. The cooling water pipe 278 is provided with two pipes, one is an inlet pipe and the other is an outlet pipe. The cooling water pipe 278 is arranged along the radial direction of the outer sealing ring 271, and the cooling water pipe 278 is provided with two sealing rings to ensure the sealing effect. The joint of the cooling water pipe is also provided with a sealing ring. The cooling water pipe is arranged in the radial direction, the access distance is short, the controllability is high, and the risk is small.

[0074] The first joint and the second joint of the present application are separately welded and installed. The first joint is welded first to ensure that the welding seam of the first joint and the outer sealing ring is compact. Then the water jacket partition plate 275 is installed and welded. Finally, the second joint is welded. In this way, the water jacket partition plate does not need to be installed in sections, there is no butt welding seam, the processing is convenient, the welding is easy, and the water leakage is not easy.

[0075] The cooling water is arranged to enter the annular water groove. The cooling water can cool the sealing ring, which can ensure the working temperature of the sealing ring.

[0076] In one embodiment of the present application, as shown in Figure 1 and Figure 7 The cutting tool is mounted on the cutter head 22, which includes a tool body 221 and alloy blades 222 connected to the top of the tool body 221 on both sides, and the alloy blades 222 form cutting tips.

[0077] As shown in Figure 8 The alloy blades 222 are arranged at the upper left and right corners of the tool body 221, and the ends of the alloy blades 222 extend to the sides of the tool body 221 and are located outside the top of the tool body 221. The alloy blades 222 form an angle between them, and the cutting tips formed by the alloy blades preferentially contact the cutting object, and the cutting residue can be smoothly discharged from the periphery of the cutting tip. When the cutting tool is used to cut plain concrete containing glass fiber bars, it can effectively avoid the risk of increasing the cutter head torque and the cutter head temperature. When the shield machine penetrates the concrete wall into the soil layer for cutting, the tool can still serve as a leading cutter to cut and divide the soil, creating good cutting conditions for the soft soil cutter.

[0078] Further, as shown in Figure 10 In order to ensure that the cutter head mud flushing port remains unblocked when crossing the underground continuous wall device, and is not blocked by concrete debris, a one-way valve 29 is arranged at the mud flushing port of the cutter head. The one-way valve 29 includes a base 291, a rubber ring 292, a wrapping plate 293, a buffer pad 294, a one-way valve pressing plate 295, a pressing plate 296, and bolts 297. The base 291, the rubber ring 292, the wrapping plate 293, the buffer pad 294, the one-way valve pressing plate 295, and the pressing plate 296 are tightly connected together by four bolts 297, and corresponding bolt holes are provided on the edges of the base 291, the rubber ring 292, the wrapping plate 293, the buffer pad 294, the one-way valve pressing plate 295, and the pressing plate 296. Figure 11 and Figure 12 As shown in

[0079] In one embodiment of the present application, as shown in Figure 9As shown, the head of the shield machine body 21 is provided with a slurry tank 211 located at the rear side of the cutterhead 22, a partition chest plate 212 and an air cushion tank 213;

[0080] The bottom of the partition chest plate 212 is provided with a slurry discharge port to communicate the slurry tank 211 with the air cushion tank 213.

[0081] Further comprising a differential pressure liquid level meter 281 arranged in the air cushion tank 213, a tuning fork liquid level meter 282 arranged outside the air cushion tank 213, a slurry delivery pipeline 283 and a slurry delivery pump 284 communicated with the air cushion tank 213, a slurry inlet ball valve 285 mounted on the slurry delivery pipeline 283, a slurry discharge pipeline 286 and a slurry discharge pump 287 communicated with the air cushion tank 213, a slurry discharge ball valve 288 mounted on the slurry discharge pipeline 286, and an air balance system 289 communicated with the air cushion tank 213.

[0082] The differential pressure liquid level meter 281 and the tuning fork liquid level meter 282 are used to detect the liquid level in the air cushion tank 213, when the liquid level in the air cushion tank 213 is normal and has no obvious fluctuation, the slurry buffer system is in stable circulation, the slurry is injected into the air cushion tank 213 through the slurry delivery pipeline 283, the slurry delivery pump 284 and the slurry inlet ball valve 285, and the slurry flow + the cutting earthwork volume = the slurry discharge flow; when the differential pressure liquid level meter 281 detects that the liquid level in the air cushion tank 213 rises for a short time, and the high liquid level alarm signal of the tuning fork liquid level meter 282 is triggered, the liquid level signal is fed back to the slurry control system, the slurry control system controls the slurry delivery pump 284 to reduce the speed and reduce the slurry flow, controls the slurry discharge pump 287 to increase the speed and increase the slurry discharge flow, and when the differential pressure liquid level meter 281 detects that the liquid level returns to normal, the slurry control system controls the slurry delivery pump 284 and the slurry discharge pump 287 to return to the original speed state. When the differential pressure liquid level meter 281 detects that the liquid level in the air cushion tank 213 decreases for a short time, and the low liquid level alarm signal of the tuning fork liquid level meter 282 is triggered, the liquid level signal is fed back to the slurry control system, the slurry control system controls the slurry delivery pump 284 to increase the speed and increase the slurry flow, controls the slurry discharge pump 287 to reduce the speed and reduce the slurry discharge flow, and when the differential pressure liquid level meter 281 detects that the liquid level returns to normal, the slurry control system controls the slurry delivery pump 284 and the slurry discharge pump 287 to return to the original speed state.

[0083] The slurry control system of the present application can switch the operating state manually, can be used as an auxiliary operating means when unattended, and the liquid level and the entire shield machine are alarm interlocked, a separate shutdown mechanism is set, and the function of cutting off the shield machine under the condition of extreme change of the liquid level is ensured.

[0084] The above embodiments of the present application are described in detail with reference to the drawings, and those skilled in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not constitute a limitation on the present application, and the scope of protection of the present application will be defined by the appended claims.

Claims

1. A deep storage drainage tunnel shield machine characterized by, The shield tunneling machine comprises: a shield tunneling machine body; a cutterhead mounted at a head of the shield tunneling machine body; a driving mechanism mounted in the shield tunneling machine body and drivingly connected with the cutterhead; and a slurry extension device arranged at a rear of the shield tunneling machine body and connected with the shield tunneling machine body, a bottom of the slurry extension device being provided with a roller and being movable together with the shield tunneling machine body. A plurality of sealing rings are arranged at a connection between the driving mechanism and the shield tunneling machine body, and a sealing cavity is formed between two adjacent sealing rings. Grease is injected into the sealing cavity. An outer sealing ring is arranged outside the sealing ring of the driving mechanism, an oil pipe is arranged in the outer sealing ring, an annular water groove is arranged on an inner side of the outer sealing ring, a first joint is arranged on the inner side of the outer sealing ring corresponding to the oil pipe, and the first joint is arranged in the annular water groove. A water jacket partition plate is arranged between the annular water groove of the outer sealing ring and the sealing ring, and a closed water storage space is formed between the water jacket partition plate and the annular water groove. An end of the first joint abuts against the water jacket partition plate, and a sealing block is arranged at a connection between the first joint and the annular water groove and the water jacket partition plate. A second joint is connected to the first joint, and the second joint is partially arranged in the water jacket partition plate and is sealingly connected with the water jacket partition plate. The oil pipe is in communication with the corresponding sealing cavity through the first joint and the second joint. The slurry extension device comprises a bracket, a hard pipe arranged on the bracket, and a soft pipe connected with the hard pipe, a bottom of the bracket is provided with the roller, the other end of the hard pipe is connected with the shield tunneling machine body, and the other end of the soft pipe is connected with a slurry system.

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

3. The deep storage drainage tunnel shield machine of claim 1, wherein, Sealing grease is injected into the grease cavity. A plurality of oil injection pipes are arranged at a shield tail of the shield tunneling machine body, a plurality of distance sensors are arranged on an inner side of the shield tail of the shield tunneling machine body, a grease pump is connected with the oil injection pipes, and a first controller is connected with the distance sensors and the grease pump.

4. The deep storage drainage tunnel shield machine of claim 3, wherein, A plurality of oil injection pipes are arranged at each grease cavity. The distance sensors are arranged corresponding to the oil injection pipes, and the distance sensors are used to detect distances between the inner side of the shield tail of the shield tunneling machine body and corresponding pipe segments. The first controller controls operation of the corresponding grease pump according to the distances detected by the distance sensors to adjust an injection amount of the grease at the corresponding oil injection pipe. A grease storage barrel is arranged in the shield tunneling machine body, a grease filling pump is connected with the grease storage barrel, an electromagnetic grease feeder is connected with the grease filling pump and is arranged corresponding to each sealing cavity, a grease distributor is connected between the electromagnetic grease feeder and the sealing cavity, a pressure detector is arranged on the sealing cavity, and a second controller is connected with the electromagnetic grease feeder and the pressure detector.

5. The deep storage drainage tunnel shield machine of claim 1, wherein, The electromagnetic grease feeder is further connected with the grease storage barrel through an overflow valve. The pressure detector is used to detect a grease pressure value in the corresponding sealing cavity. ​ The second controller controls the operation of the corresponding electromagnetic oil feeder according to the oil pressure value detected by the pressure detector, so as to control the oil pressure in the oil chamber.

6. The deep storage drainage tunnel shield machine of claim 1, wherein, The outer sealing ring is further provided with a cooling water pipe in communication with the annular water tank.

7. The deep storage drainage tunnel shield machine of claim 1, wherein, The cutter head is provided with cutting tools, and the cutting tools comprise tool bodies and alloy blades connected to two sides of the top of the tool bodies, and the alloy blades form cutting tips.

8. The deep storage drainage tunnel shield machine of claim 1, wherein, The head of the shield machine body is provided with a slurry tank located at the rear side of the cutter head, a partition chest plate, and an air cushion tank. The bottom of the partition chest plate is provided with a sludge discharge port to communicate the slurry tank and the air cushion tank. The air cushion tank is further provided with a differential pressure liquid level meter, a tuning fork liquid level meter located outside the air cushion tank, a sludge conveying pipeline and a sludge conveying pump in communication with the air cushion tank, a sludge inlet ball valve installed on the sludge conveying pipeline, a sludge discharge pipeline and a sludge discharge pump in communication with the air cushion tank, a sludge discharge ball valve installed on the sludge discharge pipeline, and an air balance system in communication with the air cushion tank.

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