A safe slag transportation device for shield construction

Abstract

The application discloses a kind of for muck safe transfer device in shield construction, belong to shield construction technical field, including support frame, conveying pipe, conveying belt one and conveying belt two, the inside of conveying pipe is provided with pivot, the outside of pivot is provided with conveying blade one.The application, through conveying pipe, carries out initial filtration and discharge to muck in spiral conveying process by filter screen, and by differential rotation of cutter head, large-particle muck material is ground, crushed and refined by cutter group, effectively avoid caking muck material mixed into large-particle muck material, and muck material is filtered and sorted by filter plate, so that large-particle and small-particle muck material is finally conveyed by conveying belt two and conveying belt one respectively, realizes that muck is conveyed after automatic sorting and is transferred according to particle size respectively, reduces the damage of mixed conveying to conveying device and the instability of conveying, effectively improves conveying efficiency and safety.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, and more specifically, to a safe transport device for excavated soil during TBM construction. Background Technology

[0002] In tunnel boring machine (TBM) construction, timely and effective removal of the excavated material is crucial for ensuring the TBM's normal tunneling progress. If the excavated material cannot be removed smoothly, it will accumulate in front of the TBM, increasing the tunneling resistance, affecting the construction progress, and potentially even causing engineering accidents such as ground subsidence.

[0003] Currently, the transportation of excavated soil from tunnel boring machine (TBM) construction typically involves using a screw conveyor to extract the soil cut by the TBM, followed by a belt conveyor for transport and discharge. However, in the existing technology, the soil particles of different sizes are generally not separated and mixed during the transportation and discharge process. The large and small soil particles have different parameters such as weight, fluidity, and interparticle friction. When mixed and transported, the pressure distribution is uneven, which not only affects the transportation efficiency but also easily causes local pressure concentration, damaging and tearing the conveyor belt.

[0004] How to invent a safe transport device for excavated soil in tunnel boring machine (TBM) construction to improve these problems has become an urgent issue for those skilled in the art. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a safe transfer device for excavated soil in shield tunneling construction, which aims to improve the problems mentioned in the background art.

[0006] This invention is implemented as follows:

[0007] This invention provides a safe transport device for excavated soil during tunnel boring machine (TBM) construction, comprising a support frame, a conveying pipe, a first conveyor belt, and a second conveyor belt. A rotating shaft is installed inside the conveying pipe, and conveying blades are installed on the outer side of the rotating shaft. A motor connected to the rotating shaft is installed inside the support frame. A transport box is installed on the side wall of the conveying pipe, and a detection mechanism is installed inside the transport box. The detection mechanism includes a detection cavity inside the transport box, and a channel is opened at the bottom of the detection cavity. A water tank is also installed inside the transport box. A transmission pipe is rotatably connected inside the transport box. The portion of the transmission pipe extending outside the transport box is connected to the output shaft of the motor via a belt. The portion of the transmission pipe inside the water tank has a transmission... The tube has a connecting hole inside. The outer wall of the transmission tube located inside the detection chamber is equipped with a second conveying blade and a sleeve. The sleeve is rotatably connected to a rotating ring. The outer wall of the rotating ring is equipped with a detection blade. The outer wall of the sleeve is equipped with a mixing blade. A spring is installed between the rotating ring and the transmission tube. A connecting ring is opened inside the rotating ring. A connecting groove is opened on the side wall of the transmission tube. A connecting groove is opened inside the rotating ring to cooperate with the spring and the connecting ring. Multiple sets of connecting rings are installed inside the sleeve. The connecting rings and connecting rings are connected by an internal pipe. Multiple sets of water outlet holes are opened on the surface of the detection blades. A connecting pipe connecting the water outlet holes and the connecting rings is opened inside the mixing blades. A sorting mechanism is installed inside the transmission tube.

[0008] Preferably, the inner wall of the rotating ring is provided with a protrusion that cooperates with the transmission tube, and the second connecting groove is provided inside the protrusion, and the second connecting groove is designed in an L shape.

[0009] Preferably, the conveying blades, the rotating ring, and the mixing blades are designed to be distributed from bottom to top along the vertical direction.

[0010] Preferably, a connecting ring is provided at the connection between the sleeve and the swivel ring, and the connecting ring at the connection between the sleeve and the swivel ring is connected to the connecting ring.

[0011] Preferably, the sorting mechanism includes a rotating cylinder rotatably disposed inside the conveying pipe, a cutter head being movably sleeved on the inner side of the rotating cylinder, a second spring being disposed between the cutter head and the rotating cylinder, a cutter assembly being disposed at the end of the cutter head away from the rotating cylinder, a filter screen being disposed on the side wall of the conveying pipe, a discharge chute being provided on the side wall of the conveying pipe, a transmission assembly being disposed between the rotating cylinder and the rotating shaft, a second channel being provided inside the transfer box, and a filter plate being disposed inside the transfer box.

[0012] Preferably, the transmission assembly includes a drive gear disposed on the outer wall of the rotating shaft, a gear ring disposed on the inner side of the rotating cylinder, and a transmission gear disposed at the end of the rotating cylinder that meshes with the gear ring and the drive gear.

[0013] Preferably, the blade assembly is provided with serrations, and the blade assembly as a whole is designed in an arc shape, with multiple sets of blades distributed in a ring along the axis of rotation.

[0014] Preferably, the filter plate is inclined, and the mesh gap between the filter plate and the filter screen is the same size.

[0015] Preferably, the highest point of the conveying blade matches the design position of the discharge chute, and the position of the cutter head also matches the position of the discharge chute.

[0016] In summary, the beneficial effects of this invention are:

[0017] 1. During the screw conveying of slag through the conveying pipe, the slag is initially filtered and discharged through a filter screen, and small slag particles are directly discharged through the discharge chute. The differential rotation of the cutter head utilizes the cutter group to grind and crush large slag particles, effectively preventing lumpy slag particles from mixing with the large slag particles. At the same time, the elastic design of the cutter head adjusts the gap between the discharge chute and the cutter head to discharge large slag particles that are difficult to crush. The slag material is filtered and sorted through the filter plate, so that large and small slag particles are finally conveyed by conveyor belt two and conveyor belt one respectively. This realizes automatic sorting of slag after conveying and transfer according to particle size, reducing the damage to the conveying device and the instability of the conveying, and effectively improving the conveying efficiency and safety.

[0018] 2. By rotating the detection blades and mixing blades, the sorted and filtered slag particles in the detection chamber are mixed. The resistance encountered by the rotating blades during the rotation of the slag particles is used to detect the moisture content of the slag particles. When the moisture content is low, the relative displacement distance between the rotating ring and the transmission pipe increases, which allows water from inside the water tank to enter the internal connecting pipe through the transmission pipe, connecting groove one, connecting groove two, connecting ring, and connecting coil, and then be discharged through the water outlet. After the slag in the detection chamber is humidified, it is mixed by the rotation of the detection blades and mixing blades and then discharged by the double spiral conveyor blades. This process achieves mixing and moisture detection of the sorted small slag particles, and humidification treatment of slag particles with low moisture content. This makes the slag particles entering the final transfer and conveying process more uniform in composition and has better overall flowability. They can be better distributed on the conveyor belt, reducing the impact of vibration during the conveying process, which helps to improve the conveying efficiency and reduce local wear on the conveying mechanism. At the same time, it can avoid dust generation during the conveying process, effectively improving the efficiency and safety of slag transfer and conveying. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the overall support frame provided in an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the overall transport box provided in an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the interior of the transfer box and conveying pipe provided in the embodiments of the present invention.

[0023] Figure 4 This is a schematic diagram of the interior of the transfer box provided in an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the rotating ring provided in an embodiment of the present invention.

[0025] Figure 6 This is an enlarged schematic diagram of the inside of the rotating ring provided in an embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the connection between the rotating ring and the sleeve provided in an embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the interior of the hybrid blade provided in an embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the rotating cylinder provided in an embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the rotary cylinder transmission provided in an embodiment of the present invention.

[0030] Legend:

[0031] 100. Support frame; 101. Conveying pipe; 102. Rotating shaft; 103. Conveying blade one; 104. Motor; 105. Conveying belt one; 106. Conveying belt two; 107. Drive gear; 200. Transfer box; 201. Channel one; 202. Channel two; 203. Water tank; 204. Detection chamber; 205. Transmission pipe; 206. Sleeve; 207. Rotating ring; 208. Detection blade; 209. Mixing blade 210. Conveying blade II; 211. Filter plate; 212. Connecting hole; 213. Connecting groove I; 214. Connecting ring; 215. Connecting groove II; 216. Spring I; 217. Connecting ring; 218. Connecting pipe; 219. Water outlet; 300. Rotating cylinder; 301. Cutter head; 302. Cutter assembly; 303. Spring II; 304. Filter screen; 305. Discharge chute; 306. Gear ring; 307. Transmission gear. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figure 1-10 This invention provides a safe transport device for excavated soil during tunnel boring machine (TBM) construction, comprising a support frame 100, a conveying pipe 101, a first conveyor belt 105, and a second conveyor belt 106. A rotating shaft 102 is disposed inside the conveying pipe 101, and conveying blades 103 are disposed outside the rotating shaft 102. A motor 104, which is drively connected to the rotating shaft 102, is disposed inside the support frame 100. A transport box 200 is disposed on the side wall of the conveying pipe 101, and a detection mechanism is disposed inside the transport box 200. The detection mechanism includes components formed within the transport box 200. The detection chamber 204 of the part has a channel 201 at its bottom. A water tank 203 is also provided inside the transfer box 200. A pressure pump is installed inside the water tank 203 to provide stable pressure. When the connecting hole 212 and the outlet hole 219 are connected, water can be pumped out of the outlet hole 219 by the pressure inside the water tank 203. A transmission pipe 205 is rotatably connected inside the transfer box 200. The portion of the transmission pipe 205 extending outside the transfer box 200 is connected to the output shaft of the motor 104 via a belt. The transmission pipe 205 is dynamically connected to the water tank 203. A connecting hole 212 is provided in the portion of the transmission pipe 205 inside the transmission pipe 205, communicating with the interior of the transmission pipe 205. A second conveying blade 210 and a sleeve 206 are provided on the outer wall of the portion of the transmission pipe 205 inside the detection chamber 204. A rotating ring 207 is rotatably connected to the sleeve 206. A detection blade 208 is provided on the outer wall of the rotating ring 207, and a mixing blade 209 is provided on the outer wall of the sleeve 206. A spring 216 is provided between the rotating ring 207 and the transmission pipe 205. A connecting ring is provided inside the rotating ring 207. 214, the transmission pipe 205 has a connecting groove 213 on its side wall, the rotating ring 207 has a connecting groove 215 that cooperates with the spring 216 and the connecting ring 214, the sleeve 206 has multiple sets of connecting rings 217 inside, the connecting rings 217 and the connecting rings 214 are connected by an internal pipe, the detection blade 208 has multiple sets of water outlet holes 219 on its surface, the mixing blade 209 has a connecting pipe 218 inside that connects the water outlet holes 219 and the connecting rings 217, and the conveying pipe 101 has a sorting mechanism inside.

[0034] Reference Figure 6The inner wall of the rotating ring 207 is provided with a protrusion that cooperates with the transmission tube 205. The second connecting groove 215 is provided inside the protrusion and the second connecting groove 215 is designed in an L shape.

[0035] It should be noted that the protrusion design can limit the rotation of the rotating ring 207 to prevent excessive rotation. The L-shaped design of the connecting groove 215 allows the water flow between the transmission pipe 205 and the rotating ring 207 to be squeezed into the connecting ring 214 through the connecting groove 215 when the rotating ring 207 is reset, thus preventing water accumulation from affecting the rotation.

[0036] It should be noted that the conveying blade 210, the rotating ring 207, and the mixing blade 209 are designed and distributed from bottom to top in the vertical direction.

[0037] Furthermore, a connecting ring 217 is provided at the connection between the sleeve 206 and the rotating ring 207, and the connecting ring 217 at the connection between the sleeve 206 and the rotating ring 207 is connected to the connecting ring 214.

[0038] It should be noted that, through the connecting ring 217 at the connection between the sleeve 206 and the rotating ring 207, the ring-shaped design of the connecting ring 217 can maintain communication with the connecting ring 214 when the sleeve 206 and the rotating ring 207 rotate relative to each other.

[0039] Reference Figure 1-10 The sorting mechanism includes a rotating cylinder 300 rotatably disposed inside the conveying pipe 101. A cutter head 301 is movably sleeved on the inner side of the rotating cylinder 300. A spring 303 is disposed between the cutter head 301 and the rotating cylinder 300. A cutter assembly 302 is disposed at the end of the cutter head 301 away from the rotating cylinder 300. A filter screen 304 is disposed on the side wall of the conveying pipe 101. A discharge chute 305 is also provided on the side wall of the conveying pipe 101. A transmission assembly is disposed between the rotating cylinder 300 and the rotating shaft 102. A channel 202 is provided inside the transfer box 200. A filter plate 211 is also disposed inside the transfer box 200.

[0040] Reference Figure 10 The transmission assembly includes a drive gear 107 disposed on the outer side wall of the rotating shaft 102, a gear ring 306 disposed on the inner side of the rotating cylinder 300, and a transmission gear 307 disposed at the end of the rotating cylinder 300 that meshes with the gear ring 306 and the drive gear 107.

[0041] It should be noted that the tool assembly 302 is equipped with serrations, and the tool assembly 302 is designed in an arc shape. Furthermore, multiple sets of the tool assembly 302 are distributed in a ring along the axis of the rotating shaft 102.

[0042] Furthermore, the filter plate 211 is designed to be inclined, and the mesh gap between the filter plate 211 and the filter screen 304 is the same size.

[0043] It should be noted that the highest point of the conveying blade 103 matches the design position of the discharge chute 305, allowing the material conveyed by the conveying blade 103 to be discharged from the discharge chute 305. The position of the cutter head 301 also matches the position of the discharge chute 305, allowing the cutter head 301 to block the discharge chute 305, reduce the gap in the discharge chute 305, and prevent large particles from being discharged directly through the discharge chute 305.

[0044] The working process of this excavated soil safe transfer device used in shield tunneling construction is as follows:

[0045] When motor 104 starts, the rotation of shaft 102 and conveying blade 103 lifts and transports the excavated soil generated during tunnel boring machine (TBM) construction towards rotating drum 300 via a screw conveyor. When the excavated soil reaches the area of ​​filter screen 304, smaller particles can be directly discharged from filter screen 304 and fall onto the surface of filter plate 211, further passing through filter plate 211 into the detection chamber 204. Larger particles are then further lifted and transported to the corresponding area of ​​discharge chute 305. Since rotating drum 300 partially blocks discharge chute 305, materials meeting discharge requirements can pass through discharge chute 305 and cutter head 300. The material falls directly into the filter plate 211 through the gap between 01 and 01. Small particles enter the detection chamber 204, while larger particles enter the channel 202 along the surface of the filter plate 211. Large particles cannot be discharged through the gap between the discharge chute 305 and the cutter head 301. As the conveying blade 103 continues to convey the material, the increased material pushes the slag material upward and presses against the cutter head 301, compressing the spring 303. At the same time, under the effect of the rotation of the rotating shaft 102, the drive gear 107 can drive the gear ring 306 to rotate at a reduced speed through the transmission gear 307, realizing the differential rotation of the rotating drum 300 and the rotating shaft 102. 00 further drives the cutter head 301 to rotate at a differential speed. This differential rotation prevents the material inside the conveying pipe 101 from rotating synchronously with the cutter head 301, the rotating shaft 102, and the conveying blades 103. Therefore, the cutter head 301 can use the cutter group 302 to perform low-speed grinding and crushing of the large particles of slag material at the top through differential rotation. The crushed slag can fall through the gap between the discharge chute 305 and the cutter head 301 onto the surface of the filter plate 211 for filtration and sorting. Large particles of slag material, such as pebbles, are difficult to discharge through grinding and crushing. As the conveying blades 103 continuously convey the material, the large particles can continuously push the cutter head 301 to... The compression of the second moving spring 303 not only increases the relative force between the cutter group 302 and the slag, improving the grinding and crushing effect, but also increases the gap between the discharge chute 305 and the cutter head 301. When the gap between the discharge chute 305 and the cutter head 301 is wide enough to allow the large particles to be discharged but not yet crushed and refined, the rotation of the cutter group 302, through its arc design, pushes the large particles away from the rotating shaft 102, allowing them to be discharged through the gap between the discharge chute 305 and the cutter head 301. Through the sorting of the filter plate 211, the large particles of slag enter the interior of the second channel 202.

[0046] After the small particles of slag material enter the detection chamber 204, the transmission pipe 205 rotates under the drive of the motor 104, driving the second conveyor blade 210 and the sleeve 206 to rotate. When the sleeve 206 rotates, it can drive the rotating ring 207, the detection blade 208 and the mixing blade 209 to rotate synchronously, so as to fully mix the slag material inside the detection chamber 204. The mixed slag material is then discharged into the channel 201 through the second conveyor blade 210. Through mixing, slag particles with different parameters such as particle size, hardness and moisture content can be mixed. The materials are thoroughly mixed to make their composition more uniform, improve overall flowability, increase conveying efficiency, and reduce local wear on the conveying mechanism. During the mixing process of the slag material via the mixing blades 209 and the detection blades 208, the mixing blades 209 rotate and mix the slag material entering the detection chamber 204, while the detection blades 208 further mix and detect the initially mixed material. When the overall moisture content of the mixed slag material is low, its flowability is poor, and the detection blades 208 are subjected to [unspecified force / effect] during rotation and mixing. The resistance is greater, thus increasing the relative rotational displacement distance between the rotating ring 207 and the transmission pipe 205, and increasing the compression of the spring 216. When the relative rotational distance between the rotating ring 207 and the transmission pipe 205 causes the rotating ring 207 to rotate until it is no longer blocked by the connecting groove 213, at this time, under the pressure of the pressure pump inside the water tank 203, the water inside the water tank 203 is pumped into the transmission pipe 205 through the connecting hole 212, and further pumped into the connecting ring 214 through the connecting groove 213 and the connecting groove 215. The water flows through the connecting ring 214. The connection with the connecting ring 217 further enters the connecting pipe 218 and is discharged through a one-way valve set inside the outlet hole 219. The slag inside the detection chamber 204 is humidified. After being further humidified by the stirring of the detection blade 208 and the mixing blade 209, it is discharged to the channel 201 by the rotation of the second conveyor blade 210 in a spiral conveying manner. Finally, the small particles of slag that have been humidified are discharged through the channel 201 and conveyed by the first conveyor belt 105, while the large particles are discharged through the second channel 202 and transferred by the second conveyor belt 106.

[0047] This device uses a conveying pipe 101 to convey slag and soil via a screw conveyor. The slag and soil are initially filtered and discharged through a filter screen 304, and small particles are directly discharged through a discharge chute 305. Large particles are ground and crushed using a blade assembly 302 via differential rotation of the cutter head 301, effectively preventing lumpy slag and soil from mixing with the larger particles. Simultaneously, the elastic design of the cutter head 301 adjusts the gap between the discharge chute 305 and the cutter head 301, discharging large, difficult-to-crush particles. The slag and soil are then filtered and sorted through a filter plate 211, allowing large and small particles to be conveyed separately via conveyor belts 106 and 105 respectively. This achieves automatic sorting and transfer of slag and soil according to particle size after conveying, reducing damage to the conveying device and instability caused by mixed conveying, and effectively improving conveying efficiency and safety.

[0048] The mixing of slag particles inside the detection chamber 204 is achieved by rotating the detection blade 208 and the mixing blade 209. The moisture content of the slag particles is detected by the resistance encountered when the detection blade 208 rotates. When the moisture content is low, the relative displacement distance between the rotating ring 207 and the transmission pipe 205 increases. This causes water inside the water tank 203 to enter the connecting pipe 218 through the connection of the transmission pipe 205, the first connecting groove 213, the second connecting groove 215, the connecting ring 214, and the connecting coil 217, and then be discharged through the water outlet 219. This process humidifies the slag inside the detection chamber 204. By detecting the mixing of small-particle slag after rotation of the detection blade 208 and then conveying it out through the spiral conveyor blade 210, the system achieves mixing and moisture detection of the sorted slag particles. It also performs moisture conditioning on slag particles with low moisture content, making the composition of the slag particles entering the transfer and conveying process more uniform and improving overall flowability. This allows the particles to be better distributed on the conveyor belt, reducing the impact of vibration during the conveying process, improving conveying efficiency, reducing local wear on the conveying mechanism, and preventing dust generation during the conveying process. This effectively improves the efficiency and safety of slag transfer and conveying.

[0049] It should be noted that the detection blade 208 is located at the lower part. Since the moisture in the slag will flow downwards due to gravity, if there is a lot of moisture, the slag in the mixing area where the detection blade 208 rotates will also have a certain degree of humidity and fluidity. This can reduce the interference of uneven moisture distribution on the detection and humidity adjustment work, ensure the humidity adjustment of the slag and avoid over-humidification.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A safe transfer device for excavated soil in shield tunneling construction, comprising a support frame (100), a conveying pipe (101), a first conveyor belt (105), and a second conveyor belt (106), wherein a rotating shaft (102) is provided inside the conveying pipe (101), a first conveying blade (103) is provided outside the rotating shaft (102), and a motor (104) connected to the rotating shaft (102) is provided inside the support frame (100), characterized in that, The side wall of the conveying pipe (101) is provided with a transfer box (200), and the transfer box (200) is provided with a detection mechanism. The detection mechanism includes a detection cavity (204) opened inside the transfer box (200). The bottom of the detection cavity (204) is provided with a channel (201). The transfer box (200) is also provided with a water tank (203). The transfer box (200) is rotatably connected with a transmission pipe (205). The part of the transmission pipe (205) extending to the outside of the transfer box (200) is connected to the output shaft of the motor (104) via a belt. The part of the transmission pipe (205) located inside the water tank (203) is provided with a connecting hole (212) communicating with the inside of the transmission pipe (205). The outer wall of the part of the transmission pipe (205) located inside the detection cavity (204) is provided with a second conveying blade (210) and a sleeve (206). The sleeve (206) is rotatably connected with a rotating ring (207). The outer wall of the sleeve (207) is provided with a detection blade (208), the outer wall of the sleeve (206) is provided with a mixing blade (209), a spring (216) is provided between the rotating ring (207) and the transmission tube (205), a connecting ring (214) is provided inside the rotating ring (207), a connecting groove (213) is provided on the side wall of the transmission tube (205), and a groove matching the connecting groove (213) and the connecting ring (214) is provided inside the rotating ring (207). The connecting groove (215) is combined with the sleeve (206) having multiple sets of connecting rings (217) inside. The connecting rings (217) and the connecting rings (214) are connected by an internal pipe. The surface of the mixing blade (209) has multiple sets of water outlet holes (219). The interior of the mixing blade (209) has a connecting pipe (218) that connects the water outlet holes (219) and the connecting rings (217). The interior of the conveying pipe (101) has a sorting mechanism. The inner wall of the rotating ring (207) is provided with a protrusion that cooperates with the transmission tube (205), and the second connecting groove (215) is provided inside the protrusion, and the second connecting groove (215) is designed in an L shape.

2. The device for safe transfer of excavated soil during shield tunneling construction according to claim 1, characterized in that, The conveying blade (210), the rotating ring (207), and the mixing blade (209) are designed and distributed from bottom to top in the vertical direction.

3. A safe transfer device for excavated soil during shield tunneling construction according to claim 1, characterized in that, A connecting ring (217) is provided at the connection between the sleeve (206) and the swivel (207), and the connecting ring (217) at the connection between the sleeve (206) and the swivel (207) is connected to the connecting ring (214).

4. A safe transfer device for excavated soil during shield tunneling construction according to claim 1, characterized in that, The sorting mechanism includes a rotating cylinder (300) rotatably disposed inside the conveying pipe (101). A cutter head (301) is movably sleeved on the inner side of the rotating cylinder (300). A spring (303) is disposed between the cutter head (301) and the rotating cylinder (300). A cutter assembly (302) is disposed at the end of the cutter head (301) away from the rotating cylinder (300). A filter screen (304) is disposed on the side wall of the conveying pipe (101). A discharge chute (305) is also provided on the side wall of the conveying pipe (101). A transmission assembly is disposed between the rotating cylinder (300) and the rotating shaft (102). A channel (202) is provided inside the transfer box (200). A filter plate (211) is also disposed inside the transfer box (200).

5. A safe transfer device for excavated soil during shield tunneling construction according to claim 4, characterized in that, The transmission assembly includes a drive gear (107) disposed on the outer wall of the rotating shaft (102), a gear ring (306) is provided on the inner side of the rotating cylinder (300), and a transmission gear (307) is provided at the end of the rotating cylinder (300) to mesh with the gear ring (306) and the drive gear (107).

6. A safe transfer device for excavated soil during shield tunneling construction according to claim 4, characterized in that, The blade assembly (302) is provided with serrations, and the blade assembly (302) is designed as an arc shape. The blade assembly (302) is distributed in multiple sets in a ring along the axis of rotation (102).

7. A safe transfer device for excavated soil during shield tunneling construction according to claim 4, characterized in that, The filter plate (211) is designed to be inclined, and the mesh gap between the filter plate (211) and the filter screen (304) is the same.

8. A safe transfer device for excavated soil in shield tunneling construction according to claim 4, characterized in that, The highest point of the conveying blade (103) matches the design position of the discharge chute (305), and the position of the cutter head (301) also matches the position of the discharge chute (305).

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