Shield slagging and transporting device capable of preventing clay from blocking

Abstract

The present application relates to the technical field of shield construction, and particularly relates to a shield slag discharge and transportation device capable of preventing clay from blocking, which comprises a conveying mechanism, an inlet mechanism is arranged at the inlet end of the conveying mechanism, and the clayey slag discharged by a shield machine is transferred to a designated area on the conveying mechanism; the inlet mechanism comprises a cutting assembly and a crushing assembly which are sequentially communicated, and the clayey slag in the inlet channel sequentially passes through the cutting assembly and the crushing assembly and then falls on the conveying mechanism for transportation; the conveying mechanism comprises a first driving assembly, a conveying belt for conveying the clayey slag is drivingly connected to the first driving assembly; a cleaning module is arranged at the end of the first driving assembly away from the inlet channel, and the cleaning module is used for assisting in cleaning the clayey slag adhered to the conveying belt. The present application has the advantages of simple structure and convenient use, the clayey slag is preliminarily treated, and the conveying mechanism is cleaned later, so that the discharge channel of the shield machine is prevented from being blocked by the clay, the transportation effect is improved, and the present application is convenient for large-scale popularization and use.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, and in particular to a TBM muck removal and transportation device to prevent clay blockage. Background Technology

[0002] In shield tunneling, the excavated soil generated by the tunnel boring machine (TBM) needs to be promptly discharged through a muck removal and transportation system to ensure continuous and efficient tunneling. However, during actual construction, when encountering highly cohesive soil layers, clay easily adheres to various components of the muck removal and transportation system, such as conveyor belts and screw conveyors, gradually causing blockages. Clay blockages hinder muck removal, leading to soil accumulation inside the TBM, affecting its normal tunneling speed, and potentially causing it to shut down. Furthermore, blockages increase equipment wear, shorten its lifespan, and increase maintenance costs and construction risks.

[0003] Currently, existing muck transportation devices lack effective prevention and solutions for clay blockage, failing to meet the construction needs under complex geological conditions. Some clay transport devices simply dry or freeze the sticky muck to reduce its adhesion; however, this approach is insufficient for processing the internal structure of the sticky muck, and adhesion can still occur during long-term transport. Other devices apply anti-adhesion membranes or materials to the surfaces in contact with the clay, but sharp stones in the muck can easily damage these membranes or materials, affecting their effectiveness and reducing transport efficiency. For example, Chinese patent CN221799801U discloses a shield tunnel muck transportation device for preventing clay blockage, using high- or low-temperature treatment of the muck and applying an anti-adhesion membrane to avoid clogging the muck discharge channel; however, this device is insufficient for directly processing the internal structure of the sticky muck and is unsuitable for long-term transport. Furthermore, this solution also uses a synchronous radiation anti-adhesion film on the conveying device, which is easily damaged, failing to provide the corresponding anti-adhesion effect, and further increasing usage and transportation costs and workload.

[0004] Therefore, this invention designs a shield tunneling muck removal and transportation device to prevent clay blockage and solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a shield tunneling muck removal and transportation device to prevent clay blockage, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a shield tunneling muck transportation device to prevent clay blockage, including a conveying mechanism for conveying viscous muck, wherein the inlet end of the conveying mechanism is provided with a feeding mechanism that communicates with the discharge port of the shield machine, and the viscous muck discharged by the shield machine falls onto the conveying mechanism and is transferred to a designated area.

[0007] The feeding mechanism includes a feeding channel connected to the discharge port of the tunnel boring machine. The outlet of the feeding channel is connected in sequence to a cutting component and a crushing component. The sticky slag in the feeding channel passes through the cutting component and the crushing component in sequence, and then falls onto the conveying mechanism for transportation.

[0008] The conveying mechanism includes a first driving component, on which a conveyor belt for conveying viscous slag is drivenly connected; a cleaning module is provided at the end of the first driving component away from the feed channel, the cleaning module being used to assist in cleaning the viscous slag adhering to the conveyor belt.

[0009] Preferably, the first drive assembly includes a correspondingly arranged drive roller and a driven roller, a plurality of support rollers are arranged between the drive roller and the driven roller, the conveyor belt is wound between the drive roller and the driven roller and is arranged in contact with the support rollers, and the cleaning module is arranged inside the drive roller and is arranged in contact with the conveyor belt.

[0010] Preferably, the diameters of the driving roller and the driven roller decrease symmetrically from the middle position to both sides, forming a symmetrical cross-sectional structure with a high middle and low sides.

[0011] Preferably, the cleaning module includes a cleaning hole formed on the side wall of the drive roller, a cleaning block slidably connected in the cleaning hole, the cleaning block being axially extendable along the cleaning hole and contacting the inner wall of the conveyor belt; a cleaning cavity is formed in the drive roller, a cleaning shaft rotatably connected in the cleaning cavity and drivenly connected to the drive roller, the cleaning shaft being drivenly connected to the cleaning block.

[0012] Preferably, a cleaning rod is fixedly connected to one end of the cleaning block facing the cleaning shaft, and the cleaning rod extends into the cleaning cavity and contacts and drives the drive block sleeved on the cleaning shaft.

[0013] Preferably, the end of the cleaning shaft is connected to a first driven gear, which meshes with a plurality of first transmission gears arranged axially at equal intervals. The plurality of first transmission gears mesh with an internal gear ring connected to the end of the drive roller.

[0014] Preferably, the cutting assembly includes a cutting channel disposed at the bottom of the feed channel, a cutting cylinder rotatably connected inside the cutting channel, and the cutting cylinder being drivenly connected to a second drive assembly disposed at the top of the feed channel; a plurality of arc-shaped cutting blades are fixedly connected to the outer wall of the cutting cylinder, and the cutting blades slide in contact with the inner wall of the cutting channel.

[0015] Preferably, the crushing assembly includes a crushing channel fixedly connected to and communicating with the bottom end of the cutting channel, and the second driving assembly extends into the crushing channel and is fixedly connected with a plurality of crushing rods in a staggered manner, the crushing rods slidingly contacting the inner wall of the crushing channel.

[0016] Preferably, a protective sleeve is coaxially sleeved on the outer wall of the crushing channel, and an inlet pipe and an outlet pipe for connecting the circulating medium are provided on the outer wall of the protective sleeve. The inlet pipe and the outlet pipe are respectively connected to a circulating pipe surrounding the crushing channel.

[0017] Preferably, the inner wall of the cutting cylinder is equipped with several second transmission gears arranged at equal intervals in the circumferential direction, and the second transmission gears mesh with the second drive gear connected to the second drive assembly.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a shield tunneling slag transportation device to prevent clay blockage, mainly composed of a conveying mechanism and a feeding mechanism. It processes the viscous slag and transports it after it is discharged from the shield machine. At the same time, it combines a cleaning module to assist in cleaning the conveyor belt and solve the problem of clay blockage. The feeding mechanism is equipped with a feeding channel connected to the discharge port of the shield machine. A cutting component and a crushing component are sequentially set at the outlet of the feeding channel. This allows the viscous slag discharged from the shield machine to be cut and crushed before entering the conveying mechanism. The cutting component can initially divide the larger pieces of viscous slag that are stuck together. The cut slag enters the crushing component and is further crushed into smaller particles. This changes the shape and structure of the viscous slag, reduces the adhesion between the clay particles, and makes it more difficult for large areas to adhere to the slag, effectively preventing blockage. This reduces the probability of clay adhering to the various parts of the conveying mechanism and lays the foundation for smooth subsequent transportation. The conveying mechanism uses a first drive assembly connected to a conveyor belt to transport viscous excavated soil. This design is simple, stable, and meets the conveying requirements for viscous excavated soil. Simultaneously, a cleaning module is installed at the end of the first drive assembly furthest from the feed channel to assist in cleaning the viscous excavated soil adhering to the conveyor belt. This promptly removes residual clay from the conveyor belt, preventing its accumulation and blockage, and ensuring the normal operation of the conveyor belt. This allows the excavated soil discharged from the tunnel boring machine to be discharged smoothly and promptly, avoiding the problem of soil accumulation inside the tunnel boring machine due to poor discharge. This maintains continuous and efficient tunneling, improves construction efficiency, and shortens the project cycle. Furthermore, by preventing blockages, this device reduces the wear and tear on equipment components, extends the equipment's service life, and reduces maintenance costs and construction risks. Compared to some clay transport devices that use anti-sticking membranes or materials, the device of this invention does not suffer from the problem of anti-sticking membranes or materials being easily damaged by sharp stones. This invention solves the clay clogging problem through physical means, without relying on the anti-sticking effect of anti-sticking membranes or materials, thus avoiding the problems of reduced anti-sticking effect and reduced transport efficiency caused by material damage. At the same time, this device does not have an anti-sticking layer or membrane, and it also avoids the situation where the surface of the anti-sticking membrane or material is smooth, resulting in insufficient friction with the slag and easy slippage during transport. The conveyor belt operates normally under the drive of the first drive component, and with the help of the cleaning module, it can stably transport sticky slag, improve the transport efficiency, and facilitate large-scale promotion and use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0020] Figure 1 This is an axial view of the shield tunnel muck removal and transportation device for preventing clay blockage according to the present invention.

[0021] Figure 2 This is an axial view of the feeding mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the feeding mechanism of the present invention;

[0023] Figure 4 This is a top view of the cutting component of the present invention;

[0024] Figure 5 This is a view of the active roller shaft of the present invention;

[0025] Figure 6 This is a schematic diagram of the active roller structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 A cross-sectional schematic diagram of AA in the middle;

[0027] In the diagram: 1. Conveying mechanism; 2. Feeding mechanism; 11. Conveying frame; 12. Conveying belt; 13. Driving roller; 14. Driven roller; 15. Support roller; 16. Cleaning hole; 17. Cleaning block; 18. Cleaning chamber; 19. Cleaning shaft; 110. Cleaning rod; 111. Drive block; 112. Positioning ring; 113. Return spring; 114. First driven gear; 115. First transmission gear; 116. First fixing rod; 117. Internal gear ring; 118. First drive motor; 119. First coupling Section; 120, First drive shaft; 21, Feed channel; 22, Cutting channel; 23, Cutting cylinder; 24, Cutting blade; 25, Crushing channel; 26, Crushing rod; 27, Protective cylinder; 28, Inlet pipe; 29, Outlet pipe; 210, Circulation pipe; 211, Second transmission gear; 212, Second drive gear; 213, Second drive motor; 214, Second coupling; 215, Second drive shaft; 216, Support foot; 217, Second fixing rod; 218, Limiting ring; 219, Feed hole. Detailed Implementation

[0028] 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, and 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.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figures 1 to 7 As shown, this embodiment provides a shield tunneling muck transportation device to prevent clay blockage, including a conveying mechanism 1 for conveying viscous muck, and a feeding mechanism 2 connected to the discharge port of the shield machine at the inlet end of the conveying mechanism 1. The viscous muck discharged by the shield machine falls onto the conveying mechanism 1 and is transferred to a designated area.

[0031] The feeding mechanism 2 includes a feeding channel 21 connected to the discharge port of the tunnel boring machine. The outlet of the feeding channel 21 is connected to a cutting component and a crushing component in sequence. The sticky slag in the feeding channel 21 passes through the cutting component and the crushing component in sequence, and then falls onto the conveying mechanism 1 for transportation.

[0032] The conveying mechanism 1 includes a first drive assembly, on which a conveyor belt 12 for conveying viscous slag is connected; a cleaning module is provided at the end of the first drive assembly away from the feed channel 21, and the cleaning module is used to assist in cleaning the viscous slag adhering to the conveyor belt 12.

[0033] This invention discloses a shield tunneling machine (TBM) muck transportation device to prevent clay blockage. It mainly consists of a conveying mechanism 1 and a feeding mechanism 2. The device processes the viscous muck before transporting it from the TBM. Simultaneously, a cleaning module assists in cleaning the conveyor belt 12 and resolves the clay blockage problem. The feeding mechanism 2 is equipped with a feeding channel 21 connected to the TBM's discharge port. A cutting component and a crushing component are sequentially installed at the outlet of the feeding channel 21. This allows the viscous muck discharged from the TBM to undergo cutting and crushing before entering the conveying mechanism 1. The cutting component initially separates larger, clumps of viscous muck that are stuck together. The cut muck then enters the crushing component, where it is further crushed into smaller particles. This alters the morphology and structure of the viscous muck, reducing the adhesion between clay particles and making it less likely to form large areas of adhesion. This effectively prevents blockage and reduces the probability of clay adhering to the components of the conveying mechanism 1, laying the foundation for smooth subsequent transportation. The conveying mechanism 1 uses a first drive assembly to drive and connect to the conveyor belt 12 to transport viscous excavated soil. This design is simple in structure, stable in operation, and can meet the conveying requirements of viscous excavated soil. Simultaneously, a cleaning module is installed at the end of the first drive assembly furthest from the feed channel 21 to assist in cleaning the viscous excavated soil adhering to the conveyor belt 12. This promptly removes residual clay from the conveyor belt 12, preventing its continuous accumulation and blockage, and ensuring the normal operation of the conveyor belt 12. This allows the excavated soil discharged from the tunnel boring machine to be discharged smoothly and promptly, avoiding the problem of soil accumulation inside the tunnel boring machine due to poor discharge. This maintains continuous and efficient tunneling, improves construction efficiency, and shortens the project cycle. Furthermore, by preventing blockages, this device reduces the wear and tear on equipment components, extends the service life of the equipment, and reduces maintenance costs and construction risks. Compared to some clay transport devices that use adhesive membranes or anti-sticking materials, the device of this invention does not suffer from the problem of adhesive membranes or anti-sticking materials being easily damaged by sharp stones. This invention solves the clay clogging problem through physical means, without relying on the anti-sticking effect of adhesive membranes or anti-sticking materials, thus avoiding the problem of reduced anti-sticking effect and reduced transport efficiency due to material damage. At the same time, this device does not have an anti-sticking layer or anti-sticking membrane, and it also avoids the situation where the surface of the anti-sticking membrane or anti-sticking material is smooth, resulting in insufficient friction with the slag and easy slippage during transport. The conveyor belt 12 operates normally under the drive of the first drive component, and with the help of the cleaning module, it can stably transport viscous slag, improve the transport efficiency, and facilitate large-scale promotion and use.

[0034] This invention pre-treats sticky slag with cutting and crushing components, changing its morphology and structure to reduce the possibility of sticky adhesion; the cleaning module cleans the clay on the conveyor belt 12 in a timely manner to prevent blockage, ensure smooth slag discharge, improve construction efficiency, reduce equipment wear, and overcome the shortcomings of existing technologies that rely on anti-sticking membranes and other materials.

[0035] Further optimizing the design, the first drive assembly includes a correspondingly arranged active roller 13 and driven roller 14. Several support rollers 15 are arranged between the active roller 13 and driven roller 14. The conveyor belt 12 is wound between the active roller 13 and driven roller 14 and is in contact with the support rollers 15. The cleaning module is located inside the active roller 13 and is in contact with the conveyor belt 12. The conveyor belt 12, wound between the active roller 13 and driven roller 14, drives the conveyor belt 12 to rotate in a cycle, conveying the viscous slag. The support rollers 15, located between the active roller 13 and driven roller 14, provide stable support for the conveyor belt 12, ensuring its smooth operation. The cleaning module, located inside the active roller 13, has a compact structure. When the active roller 13 is running, it can better contact the conveyor belt 12, enabling timely cleaning of its inner wall during operation, improving cleaning effect, cleaning efficiency, and overall device stability.

[0036] In one embodiment of the present invention, the conveying mechanism 1 further includes a conveying frame 11, which can be adjusted according to the position of the starting point and the ending point of the conveying; the driving roller 13 and the driven roller 14 are respectively rotatably connected to the conveying frame 11 to provide power for the operation of the conveyor belt 12.

[0037] In one embodiment of the present invention, one end of the active roller 13 is connected to a first drive shaft 120, and the first drive shaft 120 is connected to a first drive motor 118 via a first coupling 119 to provide power for the operation of the active roller 13.

[0038] In one embodiment of the present invention, the first coupling 119 adopts magnetic drive and disconnects when the load exceeds the rated load of the first drive motor 118 to avoid damage to the motor.

[0039] Further optimization involves symmetrically reducing the diameters of the drive roller 13 and driven roller 14 from the center outwards, creating a symmetrical cross-sectional structure with a high center and low sides. The support roller 15 is designed with a low center and high sides, causing the conveyor belt 12 to form a groove-like structure under the load of sticky slag, preventing the sticky slag from falling off during transport. Conversely, the drive roller 13 and driven roller 14 are designed with a high center and low sides, the opposite of the support roller 15. This causes the conveyor belt 12 to fold outwards at the positions of the drive roller 13 and driven roller 14, assisting in cleaning the sticky slag on the conveyor belt 12 and initially preventing adhesion and blockage.

[0040] The solution is further optimized. The cleaning module includes a cleaning hole 16 on the side wall of the drive roller 13. A cleaning block 17 is slidably connected inside the cleaning hole 16. The cleaning block 17 can extend and retract axially along the cleaning hole 16 and is positioned to contact the inner wall of the conveyor belt 12. A cleaning cavity 18 is provided inside the drive roller 13. A cleaning shaft 19, which is rotatably connected to the drive roller 13, is driven by the cleaning block 17. When the drive roller 13 rotates, it can also drive the cleaning shaft 19 in the cleaning cavity 18 to rotate. When the cleaning shaft 19 rotates, it can drive the cleaning block 17 to periodically extend and retract within the cleaning hole 16, squeezing the inner wall of the conveyor belt 12, causing the conveyor belt 12 to deform and vibrate, further removing the sticky slag, making the cleaning more thorough, preventing the accumulation of clay inside the conveyor belt 12 from affecting operation, and ensuring the normal operation of the conveyor belt 12.

[0041] In a further optimized design, a cleaning rod 110 is fixedly connected to one end of the cleaning block 17 facing the cleaning shaft 19. The cleaning rod 110 extends into the cleaning cavity 18 and contacts and drives the drive block 111 sleeved on the cleaning shaft 19. The drive block 111 is eccentrically cam-shaped, and the cleaning rod 110 slides in contact with the outer wall of the drive block 111. When the cleaning shaft 19 drives the drive block 111 to rotate, the position and angle between the major and minor axes of the drive block 111 and the cleaning rod 110 change, causing the cleaning rod 110 to extend and retract in the cleaning hole 16. This, in turn, causes the cleaning block 17 to periodically extend and retract in the cleaning hole 16, assisting in cleaning the sticky slag on the conveyor belt 12, improving the accuracy and stability of the cleaning, and enhancing the cleaning effect.

[0042] In one embodiment of the present invention, a positioning ring 112 is provided at the bottom end of the cleaning hole 16, and a return spring 113 in a stretched state is provided between the positioning ring 112 and the cleaning block 17 to assist the cleaning block 17 in resetting.

[0043] Further optimization involves connecting a first driven gear 114 to the end of the cleaning shaft 19. This first driven gear 114 meshes with several first transmission gears 115 arranged axially at equal intervals. These first transmission gears 115 mesh with an internal gear ring 117 connected to the end of the driving roller 13. The installation of the internal gear ring 117, the first transmission gears 115, and the first driven gears 114 at the end of the driving roller 13 is detailed in the appendix. Figure 4 As shown, when the drive roller 13 drives the internal gear ring 117 to rotate, it drives the first transmission gear 115, which is mounted on the conveyor frame 11 via the first fixed rod 116, to rotate. This, in turn, drives the first driven gear 114, which meshes with the first transmission gear 115, to rotate. This transmits the rotation of the drive roller 13 to the cleaning shaft 19, providing power for the rotation of the cleaning shaft 19. This ensures the cleaning module can work continuously and stably. At the same time, the gear parameters can be adjusted as needed to change the speed of the cleaning shaft 19 to adapt to different working conditions.

[0044] The design is further optimized. The cutting assembly includes a cutting channel 22 located at the bottom of the feed channel 21. A cutting cylinder 23 is rotatably connected inside the cutting channel 22, and the cutting cylinder 23 is connected to a second drive assembly located at the top of the feed channel 21. Several arc-shaped cutting blades 24 are fixedly connected to the outer wall of the cutting cylinder 23, and the cutting blades 24 slide in contact with the inner wall of the cutting channel 22. When the sticky slag in the feed channel 21 enters the cutting cylinder 23, the second drive assembly drives the cutting cylinder 23 to rotate, which in turn drives the cutting blades 24 to cut the sticky slag entering the cutting channel 22. The arc-shaped cutting blades 24 can better adapt to the clay's shape, improve the cutting effect, and initially divide large pieces of clay, preparing for subsequent crushing and reducing the risk of blockage.

[0045] The scheme is further optimized. The crushing component includes a crushing channel 25 fixedly connected to the bottom of the cutting channel 22. A second drive component extends into the crushing channel 25 and is fixedly connected with several crushing rods 26 at a staggered position. The crushing rods 26 slide in contact with the inner wall of the crushing channel 25. The cut viscous slag is fed into the crushing channel 25 through the feed hole 219 at the bottom of the cutting channel 22. At the same time, the rotating second drive component drives the crushing rods 26 to rotate, crushing the viscous slag as it falls. The staggered crushing rods 26 can more fully crush the cut viscous slag into smaller particles, further reducing the stickiness of the clay and the possibility of blockage, ensuring that the viscous slag passes smoothly through the slag discharge and transportation device.

[0046] In a further optimized design, a protective cylinder 27 is coaxially fitted onto the outer wall of the crushing channel 25. The outer wall of the protective cylinder 27 is equipped with an inlet pipe 28 and an outlet pipe 29 for connecting the circulating medium. The inlet pipe 28 and outlet pipe 29 are respectively connected to a circulation pipe 210 surrounding the crushing channel 25. The circulating medium enters the circulation pipe 210 through the inlet pipe 28 and then flows out through the outlet pipe 29, allowing for cooling or heating of the crushing channel 25. During the crushing process, heat may be generated due to friction. The cooling medium can lower the temperature, preventing the clay from becoming more viscous due to increased temperature; the heating medium can, under certain conditions, alter the properties of the clay, making it easier to crush and transport, thus improving the adaptability and stability of the device.

[0047] In one embodiment of the present invention, whether the circulating medium is high-temperature or low-temperature depends on the actual working conditions such as the moisture content and bonding strength of the cohesive slag. The low-temperature medium freezes the cohesive slag, strengthens the hardness of the crushed clay particles, and reduces the probability of bonding. The hot medium heats and dries the clay, reduces the moisture content of the cohesive slag, and also reduces the bonding properties of the cohesive slag.

[0048] Further optimization involves a series of circumferentially spaced second transmission gears 211 meshing on the inner wall of the cutting cylinder 23. These second transmission gears 211 mesh with a second drive gear 212 connected to the second drive assembly. Driven by the second drive assembly, the second drive gear 212 rotates, causing the several second transmission gears 211 mounted via the second fixed rod 217 to rotate. This, in turn, drives the cutting cylinder 23, which meshes with the second transmission gears 211, to rotate. This ensures uniform force distribution across all parts of the cutting cylinder 23, improving its operational reliability and cutting effect, and ensuring that cohesive slag can be effectively cut.

[0049] In one embodiment of the present invention, by modifying the diameter and number of teeth of the second drive gear 212 and the second transmission gear 211, the rotational speed of the cutting cylinder 23 can be changed, and the cutting speed can be adjusted according to the composition of the viscous slag, making it highly adaptable.

[0050] In one embodiment of the present invention, the second drive assembly includes a second drive motor 213, the output end of which drives the second drive shaft 215 to rotate through a second coupling 214, thereby providing power to the second drive shaft 215.

[0051] In one embodiment of the present invention, the second coupling 214 adopts magnetic drive and disconnects when the load exceeds the operating condition of the second drive motor 213 to avoid damage to the motor.

[0052] In one embodiment of the present invention, the second drive shaft 215 passes through the cutting cylinder 23 and the crushing channel 25, providing power for the rotation of the second drive gear 212 and the crushing rod 26.

[0053] In one embodiment of the present invention, a limiting ring 218 is fixed at the bottom end of the second fixing rod 217 to position and fix the second fixing rod 217.

[0054] In one embodiment of the present invention, the bottom end of the protective cylinder 27 is provided with a plurality of support feet 216, which can be used to install the protective cylinder 27 on the conveyor frame 11, making it flexible to adjust and convenient for transportation and storage.

[0055] In one embodiment of the present invention, the feeding mechanism 2 is detachably connected to the conveying frame 11 via a support foot 216. The installation position on the conveying mechanism 1 can be adjusted according to the location of the tunnel boring machine's discharge port and the required conveying angle, making it suitable for different transportation needs.

[0056] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0057] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A shield tunneling muck removal and transportation device to prevent clay blockage, characterized in that: It includes a conveying mechanism (1) for conveying viscous slag, and the inlet end of the conveying mechanism (1) is provided with a feeding mechanism (2) that is connected to the discharge port of the tunnel boring machine. The viscous slag discharged by the tunnel boring machine falls onto the conveying mechanism (1) and is transferred to a designated area. The feeding mechanism (2) includes a feeding channel (21) connected to the discharge port of the tunnel boring machine. The outlet of the feeding channel (21) is connected to a cutting component and a crushing component in sequence. The sticky slag in the feeding channel (21) passes through the cutting component and the crushing component in sequence, and then falls onto the conveying mechanism (1) for transportation. The conveying mechanism (1) includes a first driving component, on which a conveyor belt (12) for conveying viscous slag is connected; a cleaning module is provided at one end of the first driving component away from the feed channel (21), and the cleaning module is used to assist in cleaning the viscous slag adhering to the conveyor belt (12); The first drive assembly includes a correspondingly arranged drive roller (13) and driven roller (14). A plurality of support rollers (15) are arranged between the drive roller (13) and the driven roller (14). The conveyor belt (12) is wound between the drive roller (13) and the driven roller (14) and is in contact with the support rollers (15). The cleaning module is arranged inside the drive roller (13) and is in contact with the conveyor belt (12). The diameters of the drive roller (13) and the driven roller (14) decrease symmetrically from the middle position to both sides, forming a cross-sectional symmetrical structure with a high middle and low sides. The cleaning module includes a cleaning hole (16) formed on the side wall of the drive roller (13), a cleaning block (17) slidably connected in the cleaning hole (16), the cleaning block (17) being axially extendable along the cleaning hole (16) and contacting the inner wall of the conveyor belt (12); a cleaning cavity (18) is formed in the drive roller (13), a cleaning shaft (19) rotatably connected in the cleaning cavity (18) and drivenly connected to the drive roller (13), the cleaning shaft (19) being drivenly connected to the cleaning block (17); The cleaning block (17) has a cleaning rod (110) fixedly connected to one end facing the cleaning shaft (19). The cleaning rod (110) extends into the cleaning cavity (18) and contacts and drives the drive block (111) sleeved on the cleaning shaft (19). The drive block (111) is eccentric cam-shaped. The cleaning rod (110) slides in contact with the outer wall of the drive block (111). When the cleaning shaft (19) drives the drive block (111) to rotate, the position and angle between the major axis and minor axis of the drive block (111) and the cleaning rod (110) change, causing the cleaning rod (110) to extend and retract in the cleaning hole (16), thereby driving the cleaning block (17) to periodically extend and retract in the cleaning hole (16) to assist in cleaning the sticky slag on the conveyor belt (12).

2. The shield tunneling muck conveying device for preventing clay blockage according to claim 1, characterized in that: The end of the cleaning shaft (19) is connected to a first driven gear (114), which meshes with a plurality of first transmission gears (115) arranged axially at equal intervals. The plurality of first transmission gears (115) mesh with an internal gear ring (117) connected to the end of the drive roller (13).

3. The shield tunneling muck removal and transportation device for preventing clay blockage according to claim 1, characterized in that: The cutting assembly includes a cutting channel (22) disposed at the bottom of the feed channel (21), a cutting cylinder (23) is rotatably connected inside the cutting channel (22), and the cutting cylinder (23) is connected to a second drive assembly disposed at the top of the feed channel (21); a plurality of arc-shaped cutting blades (24) are fixedly connected to the outer wall of the cutting cylinder (23), and the cutting blades (24) slide in contact with the inner wall of the cutting channel (22).

4. The shield tunneling muck removal and transportation device for preventing clay blockage according to claim 3, characterized in that: The crushing assembly includes a crushing channel (25) fixedly connected to and connected to the bottom end of the cutting channel (22). The second drive assembly extends into the crushing channel (25) and is fixedly connected with a plurality of crushing rods (26) in a staggered manner. The crushing rods (26) slide in contact with the inner wall of the crushing channel (25).

5. The shield tunneling muck removal and transportation device for preventing clay blockage according to claim 4, characterized in that: The outer wall of the crushing channel (25) is coaxially fitted with a protective cylinder (27). The outer wall of the protective cylinder (27) is provided with an inlet pipe (28) and an outlet pipe (29) for connecting the circulating medium. The inlet pipe (28) and the outlet pipe (29) are respectively connected to the circulating pipe (210) surrounding the crushing channel (25).

6. The shield tunneling muck conveying device for preventing clay blockage according to claim 3, characterized in that: The inner wall of the cutting cylinder (23) is equipped with several second transmission gears (211) arranged at equal intervals in the circumferential direction. The second transmission gears (211) mesh with the second drive gear (212) that is connected to the second drive assembly.

Images