High-efficiency TBM (Tunnel Boring Machine) slag recovery device

Abstract

The invention relates to an efficient TBM slag recycling device. The recovery device comprises a bucket assembly located at the foremost end of the recovery device and used for collecting slag from tunnel rock walls or ore bodies, the bucket assembly comprises a right bucket assembly, a left bucket assembly and a slag tapping groove tail section, the right bucket assembly and the left bucket assembly are fixedly connected to the two sides of the slag tapping groove tail section respectively, and a groove is formed in the middle of the slag tapping groove tail section; the slag discharging groove is fixedly connected to the rear portion of the bucket assembly, and a material conveying channel communicated with the tail section of the slag discharging groove is formed; the right star wheel assembly and the left star wheel assembly are mounted at the upper part of the bucket assembly, are respectively connected with a rotary driving device, and respectively rotate clockwise and anticlockwise to stir slag; the scraper chain assembly is mounted at the tail section of the slag discharge groove and in the slag discharge groove and circularly moves; the driving end assembly drives the scraper chain assembly and extends to the conveying channel. The lifting oil cylinder assembly is connected to the rear portion of the bucket assembly. According to the invention, the star wheel, the bucket and the scraper conveyor are integrated, and the slag recovery equipment and the conveyor are combined, so that the material receiving efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunneling machine slag removal equipment, in particular to a high-efficiency TBM slag recovery device. BACKGROUND

[0002] At present, the existing slag recovery equipment mainly has the functions of collecting and removing slag, and cannot automatically transport the collected slag to the material conveying equipment. When the slag removal equipment is working, it can only passively collect the tunnel collapse and rolling slag into the hopper, and then rely on the tunneling of the TBM to drive the scraper forward, and finally roll the slag onto the conveyor. On the other hand, although the scraper conveyor can convey material slag, it can only relay the slag conveyed by the upper conveyor to the next level of material conveying equipment and cannot actively collect the tunnel collapse or falling slag. The limitations of this prior art result in the fact that the slag removal equipment and the scraper conveyor can only work relatively independently and cannot effectively integrate the functions of the two, thereby affecting the operation efficiency and the continuity of the overall operation process. SUMMARY

[0003] Therefore, the present application provides a high-efficiency TBM slag recovery device to solve or at least alleviate one or more of the above problems existing in the prior art and other aspects.

[0004] In order to achieve the foregoing purposes, the present application provides a high-efficiency TBM slag recovery device, wherein the recovery device comprises: a bucket assembly located at the front end of the recovery device for collecting slag from the tunnel wall or ore body, the bucket assembly comprising a right bucket assembly, a left bucket assembly and a slag chute tail section, the right bucket assembly and the left bucket assembly being fixedly connected to the two sides of the slag chute tail section, and a groove being formed in the middle of the right bucket assembly and the left bucket assembly; a slag chute fixedly connected to the rear of the bucket assembly to form a material conveying channel communicating with the slag chute tail section; a right star wheel assembly and a left star wheel assembly, the right star wheel assembly and the left star wheel assembly being respectively installed on the upper part of the bucket assembly, the right star wheel assembly and the left star wheel assembly being respectively connected with a rotary driving device, the right star wheel assembly rotating clockwise, and the left star wheel assembly rotating counterclockwise to push the slag from the front end of the bucket assembly to the rear along the two sides; a scraper chain assembly installed in the slag chute tail section and the slag chute and circulating in the conveying channel for conveying the slag along the conveying channel to the conveying device behind the recovery device; a driving end assembly for driving the circulating movement of the scraper chain assembly and continuing to extend the conveying channel rearward behind the slag chute. The lifting cylinder assembly is connected to the rear of the bucket assembly and is used to adjust the height and lifting angle of the bucket assembly.

[0005] In the aforementioned recycling device, optionally, the right bucket assembly includes a right bucket bottom plate, a right bucket rear guard plate, a first chute connecting plate, a right bucket inclined plate, and a right bucket top plate. The right bucket bottom plate has an arc-shaped structure, closely abutting the circular cross-section of the tunnel arch, and is used to guide the slag to slide upwards on the right bucket assembly. The right bucket rear guard plate is installed at the rear end of the right bucket assembly to prevent slag from falling from the rear of the right bucket assembly and to guide the slag into the groove. The right bucket inclined plate is disposed above the right bucket bottom plate and connected to the right bucket bottom plate. The front end of the bucket is used to guide the slag to the top plate of the right bucket. The top plate of the right bucket is located at the top of the right bucket assembly and is used to collect and temporarily store the slag. It cooperates with the right star wheel assembly to transport the slag to the tail section of the slag discharge chute. The first chute connecting plate is used to fix the right bucket assembly to the side of the tail section of the slag discharge chute. The first star wheel mounting hole is provided in the top plate of the right bucket for installing the right star wheel assembly. The first hydraulic cylinder lifting lug is provided in the rear guard plate of the right bucket and connected to the lifting hydraulic cylinder assembly for adjusting the height and angle of the bucket assembly.

[0006] In the aforementioned recycling device, optionally, the left bucket assembly includes a left bucket bottom plate, a left bucket rear guard plate, a second chute connecting plate, a left bucket inclined plate, and a left bucket top plate. The left bucket bottom plate has an arc-shaped structure, closely abutting the circular cross-section of the tunnel arch, and is used to guide the slag to slide upwards on the left bucket assembly. The left bucket rear guard plate is installed at the rear end of the left bucket assembly to prevent slag from falling from the rear of the left bucket assembly and to guide the slag into the groove. The left bucket inclined plate is disposed above the left bucket bottom plate and connected to the left bucket bottom plate. The front end of the left bucket assembly is used to guide the slag to the top plate of the left bucket assembly. The top plate of the left bucket assembly is located at the top of the left bucket assembly and is used to collect and temporarily store the slag. It cooperates with the left star wheel assembly to transport the slag to the tail section of the slag discharge chute. The second chute connecting plate is used to fix the left bucket assembly to the side of the tail section of the slag discharge chute. The second star wheel mounting hole is provided in the top plate of the left bucket assembly for installing the left star wheel assembly. The second hydraulic cylinder lifting lug is provided in the rear guard plate of the left bucket assembly and connected to the lifting hydraulic cylinder assembly for adjusting the height and angle of the bucket assembly.

[0007] In the aforementioned recycling device, optionally, the tail section of the slag discharge trough includes a reversing wheel assembly, a central bucket plate, a guide wear-resistant plate, a chain pressure plate, a right bucket trough connecting plate, a trough wear-resistant plate, a trough connecting plate, a cover plate, a left bucket trough connecting plate, and a bottom plate of the tail section of the slag discharge trough. The tail section of the slag discharge trough is located between the right bucket assembly and the left bucket assembly. The reversing wheel assembly is used to redirect the return scraper chain of the scraper chain assembly by 180 degrees and is fixedly connected to the right bucket trough connecting plate and the bottom plate of the slag discharge trough via a reversing wheel pressure plate. The left bucket trough connecting plate is described. The chain pressure plate is used to restrict the movement of the scraper chain assembly. The guide trough is located inside the tail section of the slag discharge trough and has a forward-facing opening. The middle bucket plate is used to guide the slag into the guide trough. The guide wear plate and the trough wear plate are set at the bottom of the groove. The right bucket trough connecting plate and the left bucket trough connecting plate respectively support and fix the right bucket assembly and the left bucket assembly. The bottom plate of the tail section of the slag discharge trough has an arc-shaped design and fits tightly with the circular cross-section of the tunnel bottom arch.

[0008] In the aforementioned recycling device, optionally, the redirecting wheel assembly includes a spindle, a guide wheel, and a shaft system assembly. The spindle extends through the entire redirecting wheel assembly. Two bearings are installed at each end of the spindle. A spacer is provided between the two bearings at both ends of the spindle. The guide wheel is sleeved outside the bearings. The shaft system assembly includes a floating seal cover, a floating seal seat, and a floating oil seal. The floating oil seal is installed at the outer end of the bearing. The floating seal seat and the floating seal cover are fixed at both ends of the spindle, and the redirecting wheel assembly is fixed inside the tail section of the slag discharge trough by fasteners.

[0009] In the aforementioned recycling device, optionally, the slag discharge trough is located behind the tail section of the slag discharge trough, and is used to receive slag from the tail section of the slag discharge trough and convey it backward along a predetermined conveying channel. The slag discharge trough includes a bottom plate, a wear-resistant middle plate, side plates, a chain press plate, and a return cavity. The bottom plate is located at the bottom of the slag discharge trough, the wear-resistant middle plate is located above the return cavity, the side plates are installed on both sides of the slag discharge trough, and the chain press plate is located on both sides of the wear-resistant middle plate to prevent the scraper chain assembly from shifting during operation. The side plates are provided with slag cleaning holes for the return cavity.

[0010] In the recycling device described above, optionally, the drive end assembly includes a drive device, a slag discharge chute drive section, and a secondary conveyor connector. The slag discharge chute drive section is connected to the rear of the slag discharge chute and is used to continuously convey slag to the rear of the recycling device. The drive device is installed at the rear end of the slag discharge chute drive section and is directly connected to the scraper chain assembly. The secondary conveyor connector is used to fix the recycling device to other equipment.

[0011] In the recycling device described above, optionally, the secondary transport connector includes a recycling device connecting frame and a trolley connecting frame. The recycling device connecting frame is hinged to the trolley connecting frame via a rotating pin, and the trolley connecting frame is hinged to an external support device via a connecting pin.

[0012] In the aforementioned recycling device, optionally, the right star wheel assembly includes a right star wheel drive motor, a right star wheel motor seat ring, a right star wheel rotating disk, and a right star wheel welded assembly. The right star wheel drive motor is fixed to the right star wheel motor seat ring by fasteners, and its output shaft is tightly fitted to the right star wheel rotating disk via a spline connection. The right star wheel rotating disk is connected to the right star wheel welded assembly. The right star wheel welded assembly includes a first mounting ring and a plurality of first fin-shaped teeth. Each first fin-shaped tooth includes a first shovel plate, a first guard plate, and a first triangular block for propelling slag material backward. The bottom surface of the first shovel plate is parallel to and closely abuts the top plate of the right bucket. The first shovel plate bends and extends outward along a clockwise spiral direction toward the outside of the first mounting ring, gradually narrowing, and forming a first sharp angle at the top of the first shovel plate. A first triangular block is provided at the first sharp angle. The first guard plate is perpendicular to the first shovel plate and is simultaneously fixedly connected to the first shovel plate and the first mounting ring.

[0013] Optionally, in the aforementioned recycling device, the left star wheel assembly includes a left star wheel drive motor, a left star wheel motor seat ring, a left star wheel rotating disk, and a left star wheel welded assembly. The left star wheel drive motor is fixed to the left star wheel motor seat ring by fasteners, and its output shaft is tightly fitted to the left star wheel rotating disk via a spline connection. The left star wheel rotating disk is connected to the left star wheel welded assembly. The left star wheel welded assembly includes a second mounting ring and a plurality of second fin-shaped teeth. Each second fin-shaped tooth includes a second shovel plate, a second guard plate, and a second triangular block for propelling the slag material backward. The bottom surface of the second shovel plate is parallel to and close to the top plate of the left bucket. The second shovel plate bends and extends outward along a counterclockwise spiral direction towards the second mounting ring, gradually narrowing, and forming a second sharp angle at the top of the second shovel plate. A second triangular block is provided at the second sharp angle. The second guard plate is perpendicular to the second shovel plate and is simultaneously fixedly connected to the second shovel plate and the second mounting ring.

[0014] This invention integrates the star wheel, arc-shaped bucket, and scraper conveyor into one unit, combining the functions of the slag recovery equipment and the scraper conveyor. This recovery device can automatically collect and transport slag, overcoming the shortcomings of the slag removal equipment and scraper conveyor operating relatively independently. It effectively improves the efficiency of slag removal and material transportation, simplifies the work process, and enhances the continuity and overall efficiency of TBM tunneling operations. Attached Figure Description

[0015] The disclosure of this invention will become more apparent from the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings: Figure 1 This is a perspective view of an embodiment of the high-efficiency TBM slag recycling device of the present invention; Figure 2 for Figure 1 A perspective view of the bucket assembly in the illustrated embodiment; Figure 3 for Figure 1 A perspective view of the right bucket assembly in the illustrated embodiment; Figure 4 for Figure 1 A perspective view of the left bucket assembly in the illustrated embodiment; Figure 5 for Figure 1 A perspective view of the tail section of the slag discharge trough in the embodiment shown; Figure 6 for Figure 1 A perspective view of the steering wheel assembly in the illustrated embodiment; Figure 7 for Figure 1 A perspective view of the slag discharge trough in the embodiment shown; Figure 8 for Figure 1 A perspective view of the driver component in the illustrated embodiment; Figure 9 for Figure 1 A perspective view of the two-way connector in the embodiment shown; Figure 10 for Figure 1 Full sectional view of the right star wheel assembly in the illustrated embodiment; Figure 11 for Figure 1 A perspective view of the right star wheel assembly in the illustrated embodiment; Figure 12 for Figure 1 Full sectional view of the left star wheel assembly in the illustrated embodiment; Figure 13 for Figure 1 A perspective view of the left star wheel assembly in the illustrated embodiment; Reference numerals: 1-Bucket assembly; 11-Right bucket assembly; 111-Right bucket bottom plate; 112-Right bucket rear guard plate; 113-First hydraulic cylinder lifting lug; 114-First trough connecting plate; 115-Right bucket ramp; 116-Right bucket top plate; 117-First star wheel mounting hole; 12-Left bucket assembly; 121-Left bucket bottom plate; 122-Left bucket rear guard plate; 123-Second hydraulic cylinder lifting lug; 124-Second trough connecting plate; 125-Left bucket ramp; 126-Left bucket top plate; 127-Second star wheel mounting hole; 13-Groove; 2-Slag discharge chute tail section; 21-Idler wheel assembly; 211-Mandrel; 212-Guide wheel; 213-Floating seal cover; 214-Floating seal seat; 215-Spacer sleeve; 216-Shaft snap ring; 217-Floating oil seal; 218-Bearing; 219-Screw plug oil injection hole; 2110-O-ring seal; 2111-Shaft assembly; 22-Guide chute; 23-Middle bucket plate; 24-Idler wheel pressure plate; 25-Guide wear-resistant plate; 26-Chain pressure plate; 27-Right bucket chute connecting plate; 28-Chute wear-resistant plate; 29-Chute connecting plate; 210-Cover plate; 2102-Left bucket chute connecting plate; 2104-Slag discharge chute tail section bottom plate; 3-Slag discharge trough; 31-Slag discharge trough bottom plate; 32-Return cavity; 33-Slag discharge trough wear-resistant middle plate; 34-Slag discharge trough side plate; 35-Slag discharge trough chain pressure plate; 36-Return cavity slag cleaning hole; 4-Drive end assembly; 41-Drive device; 42-Slag discharge chute drive section; 43-Secondary transport connector; 431-Recovery device connecting frame; 432-Trolley connecting frame; 433-Connecting pin; 434-Rotating pin; 5-Right star wheel assembly; 51-Right star wheel drive motor; 52-Right star wheel motor seat ring; 53-Right star wheel rotating disk; 54-Right star wheel welded assembly; 541-First mounting ring; 542-First fin tooth; 543-First triangular block; 544-First shovel plate; 545-First guard plate; 546-First sharp corner; 55-First lock nut; 56-First set of tapered roller bearings; 57-First floating oil seal; 58-First O-ring seal; 6-Left star wheel assembly; 61-Left star wheel drive motor; 62-Left star wheel motor seat ring; 63-Left star wheel rotating disk; 64-Left star wheel welded assembly; 641-Second mounting ring; 642-Second fin tooth; 643-Second triangular block; 644-Second shovel plate; 645-Second guard plate; 646-Second sharp corner; 65-Second lock nut; 66-Second set of tapered roller bearings; 67-Second floating oil seal; 68-Second O-ring seal; 7- Lifting cylinder assembly; 8- Scraper chain assembly. Detailed Implementation

[0016] Referring to the accompanying drawings and specific embodiments, the structure, composition, features, and advantages of the high-efficiency TBM slag recycling device of the present invention will be described below by way of example; however, all descriptions should not be construed as limiting the present invention in any way.

[0017] Furthermore, for any single technical feature described or implied in the embodiments mentioned herein, or any single technical feature shown or implied in the various figures, the present invention still allows for any combination or deletion of these technical features or their equivalents without any technical obstacle, and thus these further embodiments according to the present invention should also be considered within the scope of the description herein.

[0018] It should also be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship of the high-efficiency TBM slag recovery device shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0020] The term "front" refers to the direction of travel of the tunneling machine, and "back" is the opposite direction. "Left" and "right" are descriptions of left and right orientations when an observer stands on the tunnel floor facing the direction of travel. "Clockwise" and "counterclockwise" are descriptions of the rotation direction of the star wheel when viewed from above from above.

[0021] Unless otherwise specified, the term "fixed" includes, but is not limited to, common connection methods such as welding, tenon joints, snap-fit ​​joints, and pin joints.

[0022] Figure 1 This is a perspective view of an embodiment of the high-efficiency TBM slag recycling device of the present invention.

[0023] The following will combine Figure 1 The following describes the implementation of the recycling device of the present invention. The slag recycling device of the present invention includes the following main components: bucket assembly 1, slag discharge chute 3, drive end assembly 4, right star wheel assembly 5, left star wheel assembly 6, lifting cylinder assembly 7, and scraper chain assembly 8.

[0024] The bucket assembly 1 is located at the foremost end of the slag recovery device of the present invention. The bucket assembly 1 is mainly used to collect slag from tunnel walls or ore bodies. The recovery device of the present invention can be used in tunnel boring machines or coal mining machines, and the slag can be slag generated during tunnel excavation or coal blocks generated during coal mining. The bucket assembly 1 includes a right bucket assembly 11, a left bucket assembly 12, and a slag discharge chute tail section 2. The right bucket assembly 11 and the left bucket assembly 12 are respectively fixedly connected to both sides of the slag discharge chute tail section 2. Because the upper part of the slag discharge chute tail section 2 is lower than the right bucket assembly 11 and the left bucket assembly 12, a groove 13 is formed in the middle of the bucket assembly 1. The front end of the bucket assembly 1 has a flat inclined surface design, which facilitates the sliding of collected slag along the inclined surface, reduces the resistance encountered by the bucket during excavation, and lowers energy consumption.

[0025] The upper part of the bucket assembly 1 is rotatably connected to the right star wheel assembly 5 and the left star wheel assembly 6. The right star wheel assembly 5 rotates clockwise, and the left star wheel assembly 6 rotates counterclockwise. During operation, the right star wheel assembly 5 and the left star wheel assembly 6 push the collected slag from the middle of the bucket assembly 1 to the sides and rear. Under the push of the star wheels, the material is continuously transferred into the central groove 13 of the bucket assembly 1, and further falls above the tail section 2 of the slag discharge chute.

[0026] The tail section 2 of the slag discharge chute is fixedly connected to the slag discharge chute 3 at its rear. The scraper chain assembly 8 is installed inside the tail section 2 and the slag discharge chute 3. The tail section 2 and the slag discharge chute 3, together with the scraper chain assembly 8, form a material conveying channel, continuously transferring the material along the conveying channel until the slag is conveyed to the next stage of the conveying device.

[0027] The drive-end assembly 4 of the recycling unit provides power for the operation of the scraper chain assembly 8. This drive-end assembly includes a drive unit that drives the cyclical movement of the scraper chain via a hydraulic motor or electric motor, ensuring continuous conveying of the slag.

[0028] The lifting cylinder assembly 7 is connected to the rear of the bucket assembly 1, and can flexibly adjust the height and lifting angle of the bucket assembly 1 by extending and retracting the cylinder. This design can prevent the equipment from getting stuck in uneven areas of the tunnel arch during excavation, thus maintaining the normal operation of the equipment.

[0029] The slag recovery device of the present invention can effectively combine slag removal and material transportation functions. Through reasonable structural design, it can achieve efficient collection and continuous transportation of slag, and is particularly suitable for the complex environment of tunnel excavation or coal mining operations, which significantly improves the efficiency of operation and the stability of equipment.

[0030] Figure 2 for Figure 1 A perspective view of the bucket assembly 1 in the illustrated embodiment. Figure 3 for Figure 1 A perspective view of the right bucket assembly of the embodiment shown. Figure 4for Figure 1 A perspective view of the left bucket assembly of the illustrated embodiment. Figure 5 for Figure 1 The perspective view of the tail section of the slag discharge trough in the embodiment shown below will be combined with... Figures 2 to 5 This embodiment describes the implementation method of the bucket assembly 1.

[0031] like Figure 2 As shown, the left and right bucket assemblies are fixedly connected to the side of the tail section 2 of the muck chute via their respective installation process holes and fasteners (such as bolts and nuts). The function of the bucket assembly 1 is to effectively collect and concentrate the excavated soil falling during tunnel excavation into the muck chute for subsequent transportation. A first hydraulic cylinder lifting lug 113 is welded to the rear of the right bucket assembly 11, and a second hydraulic cylinder lifting lug 123 is welded to the rear of the left bucket assembly 12. Lifting lugs 113 and 123 are used to connect the lifting cylinder assembly 7. The right bucket assembly 11 and the left bucket assembly 12 are mirror images of each other, and they work together to improve the muck collection efficiency and adaptability of the device.

[0032] like Figure 3 As shown, the right bucket assembly 11 mainly includes a right bucket bottom plate 111, a right bucket rear guard plate 112, a first chute connecting plate 114, a right bucket inclined plate 115, and a right bucket top plate 116.

[0033] The arc-shaped right bucket bottom plate 111 closely adheres to the circular cross-section of the tunnel arch, ensuring the narrowest possible gap between the bottom plate and the tunnel, effectively reducing the possibility of muck leakage and enabling more efficient muck collection. During TBM excavation, muck is guided by the right bucket inclined plate 115 and slides to the right bucket top plate 116 for subsequent transport. The right bucket top plate 116 is located at the top of the bucket assembly and is used for centralized collection and temporary storage of muck. Above the right bucket top plate 116, there is also a first star wheel mounting hole 117 for installing the right star wheel assembly 5. The right bucket top plate 116 cooperates with the star wheel assembly 5 to further transport muck to the tail section 2 of the muck chute. The right bucket rear guard plate 112 is installed at the rear end of the bucket assembly to prevent muck on the right bucket top plate 116 from falling from behind the right bucket plate assembly 111, and at the same time guides the muck into the central groove 13 of the bucket assembly during excavation. The first feed trough connecting plate 114 is used to fix the right bucket assembly 11 to the side plate of the tail section 2 of the slag discharge trough, ensuring the robustness and stability of the bucket assembly 1 and the entire recycling device. The process mounting hole is used to fix the right bucket assembly 11 to the tail section 2 of the slag discharge trough with fasteners.

[0034] like Figure 4As shown, the structure of the left bucket assembly 12 is mirror-symmetrical to that of the right bucket assembly 11, and includes a left bucket bottom plate 121, a left bucket rear guard plate 122, a second chute connecting plate 124, a left bucket inclined plate 125, a left bucket top plate 126, and a second star wheel mounting hole 127. Its function and role are the same as the right bucket assembly, both used to efficiently collect slag during tunnel excavation, and through a fixed connection with the tail section 2 of the slag discharge chute, guide the slag into the recovery device, ensuring effective collection and transportation of the slag.

[0035] like Figure 5 As shown, the tail section 2 of the slag discharge trough is an important structure for guiding and initially collecting slag in the slag recycling device of the present invention. It is located between the right bucket assembly 11 and the left bucket assembly 12 and is used to guide the collected slag into the groove 13.

[0036] The tail section 2 of the slag discharge chute includes the following main components: a reversing wheel assembly 21, a guide chute 22, a central bucket plate 23, a reversing wheel pressure plate 24, a guide wear-resistant plate 25, a chain pressure plate 26, a right bucket trough connecting plate 27, a trough wear-resistant plate 28, a slag discharge chute connecting plate 29, a cover plate 210, a left bucket trough connecting plate 2102, a reversing wheel pressure plate 213, and a tail section bottom plate 214. Through the coordinated operation of these components, the tail section 2 of the slag discharge chute can effectively receive and guide slag into the conveying channel of the scraper chain assembly 8, ensuring continuous and efficient slag transport, thereby improving the overall working efficiency and stability of the slag recovery device of this invention.

[0037] The redirecting wheel assembly 21 is used to redirect the return scraper chain in the scraper chain assembly 8 by 180 degrees, converting it into a forward transport scraper chain, thereby ensuring that the slag can be conveyed backward along a predetermined path. The redirecting wheel assembly 21 is installed on the bucket trough connecting plates 27 and 2102, located in the groove 13, and is fixed by two redirecting wheel pressure plates 24 located on both sides of the tail section 2 of the slag discharge trough. The redirecting wheel pressure plates 24 securely connect the redirecting wheel assembly 21 to the bucket trough connecting plates 27 and 2102 with fasteners, ensuring stable operation of the redirecting wheel and preventing movement caused by equipment vibration or load changes.

[0038] The feed chute 22 and the central bucket plate 23 are used to guide the flow of slag within the tail section 2 of the slag discharge chute. The slag first flows into the feed chute 22 guided by the central bucket plate 23, and is then scraped away by the scraper chain assembly 8. The feed chute 22 and the central bucket plate 23 are tightly connected to other components by welding or other fixed connections to ensure the strength and sealing of the overall structure and prevent slag leakage. The cover plate 210 is fixed to the rear end of the feed chute 22, serving a sealing function to prevent external debris from entering the feed chute 22 and affecting the normal operation of the equipment, while also ensuring that slag does not overflow from the rear end of the feed chute 22 during conveying.

[0039] The guide wear plate 25 and the trough wear plate 28 are connected to the inner wall of the tail section 2 of the slag discharge trough on both the left and right sides to resist the wear of the slag and scraper chain assembly 8 on the structural components of the tail section of the slag discharge trough. The wear plates 25 and 28 are made of high-strength wear-resistant materials, which can effectively extend the service life of the tail section 2 of the slag discharge trough and reduce the maintenance frequency.

[0040] Meanwhile, the wear-resistant plate 28 of the trough serves as the bottom of the material conveying channel, bearing the slag and cooperating with the scraper chain assembly 8 to transport the slag to the rear of the recycling device of the present invention. The chain pressure plates 26 are arranged on both sides of the wear-resistant plate 28 of the trough to prevent the scraper chain assembly 8 from shifting during operation, ensuring the smooth and stable operation of the chain.

[0041] The right bucket trough connecting plate 27 and the left bucket trough connecting plate 2102 serve as wall panels on both sides of the tail section 2 of the slag discharge chute, used to support and fix the left and right bucket assemblies 11 and 12. The connecting plates securely connect the left and right parts of the bucket assembly 1 to the tail section 2 of the slag discharge chute using fasteners, ensuring the structural stability of the entire device under high-intensity operating conditions. The bottom plate 2104 of the tail section of the slag discharge chute has an arc-shaped design, forming a continuous arc surface with the right bucket bottom plate 111 and the left bucket bottom plate 121. The bottom plate 2104 is flush with the circular cross-section of the tunnel arch, preventing slag from being lost due to vibration or tilting during transport, maintaining the continuity and efficiency of the transport process. The slag discharge chute connecting plate 29 is located at the rear of the tail section 2 of the slag discharge chute, used to fix and connect the slag discharge chute 3 located behind it. Figure 5 As shown in this embodiment, a bolt group connection is used at this location, but other fixed connection methods can also be used to ensure that the tail section 2 of the slag discharge trough can withstand continuous high load pressure during operation.

[0042] Figure 6 for Figure 1 A perspective view of the steering wheel assembly of the illustrated embodiment. Further, it will be combined with... Figure 6 This embodiment describes the implementation of the steering wheel assembly 21.

[0043] like Figure 6As shown, the redirecting wheel assembly 21 may include a spindle 211, guide wheels 212, and a shaft system assembly 2111. The spindle 211 extends through the entire redirecting wheel assembly 21. Two bearings 218 are mounted at each end of the spindle 211. These bearings support the rotational movement of the spindle, reduce friction, and withstand heavy loads during transportation. In this embodiment, the bearings 218 are spherical roller bearings. The bearings 218 are mounted at both ends of the spindle 211, with the two bearings at each end separated by a spacer 215. The bearings 218 allow the spindle to rotate flexibly, reducing friction, while supporting the load transmitted radially by the guide wheels 212. The bearings 218 ensure the smooth operation of the redirecting wheel assembly 21 under heavy loads. The spacer 215 fixes the spacing between the spherical roller bearings 218, preventing axial movement of the bearings during operation and ensuring effective positioning and smooth operation. The guide wheels 212 are sleeved outside the bearings 218 and are used to guide the chain direction change in the scraper chain assembly 8. The guide wheel 212 enables it to smoothly guide the chain during turning, preventing the chain from derailing or slipping, thus ensuring stable chain operation and continuous conveying of slag.

[0044] Floating oil seals 217 are installed on the outer end faces of bearings 218 at both ends of the spindle 211 to prevent lubricating grease from overflowing and dust from entering the bearings. The floating oil seals ensure the durability of the redirecting wheel assembly 21 in harsh environments. Floating seal seats 214 and floating seal covers 213 are installed at the outermost end of the spindle 211. The floating seal seats 214 are fixed to both sides of the redirecting wheel assembly 21 to support the floating seal covers 213 and ensure the overall structural stability. The floating seal covers 213 are connected to the bucket trough connecting plates 27 and 212 by bolts or other fasteners, fixing the redirecting wheel assembly 21 inside the tail section 2 of the slag discharge trough. Shaft retaining rings 216 are installed at the end of the spindle 211 to axially fix the position of shaft components such as the floating seal covers 312 and bearings 218. This axially positions the guide wheel 212, preventing it from moving along the axis and ensuring that all components operate stably in the correct position.

[0045] A screw-plug oil injection hole 219 is provided through the side wall of the guide wheel 212 for periodically injecting lubricating oil into the spherical roller bearing 218, maintaining good lubrication of the bearing, reducing friction and wear, and improving the service life of the redirecting wheel assembly 21. An O-ring seal 2110 is installed on the contact surface between the outermost bearing 218 of the spindle 211 and the floating seal seat 214, providing additional sealing to prevent external dust or moisture from entering the bearing sealing cavity and lubricating oil leakage, further ensuring a clean bearing environment.

[0046] Through the rational layout and close cooperation of the above components, the redirecting wheel assembly 21 is used to change the direction of the return chain in the scraper chain assembly 8 by 180 degrees, converting it to rotate in the transport direction. The redirecting wheel assembly 21 is designed to ensure the stable operation of the chain and the continuity and efficiency of the slag conveying process.

[0047] Figure 7 for Figure 1 A perspective view of the slag discharge trough in the embodiment shown. The following will be based on... Figure 7 This embodiment describes the implementation method of the slag discharge trough 3.

[0048] Slag discharge trough 3 Figure 7 As shown, located behind the tail section 2 of the slag discharge chute, it receives the slag material conveyed from the tail section 2 of the slag discharge chute and further transports it backward along a predetermined conveying channel. The slag discharge chute 3 is designed to ensure a smooth flow of slag material during transportation.

[0049] The slag discharge trough 3 mainly includes a slag discharge trough bottom plate 31, a slag discharge trough wear-resistant middle plate 33, a slag discharge trough side plate 34, a slag discharge trough pressure chain plate 35, a return cavity 32, and a return cavity slag cleaning hole 36.

[0050] The bottom plate 31 of the slag discharge trough is located at the very bottom of the slag discharge trough 3, serving as the supporting foundation for the entire slag discharge trough structure. The bottom plate 31 of the slag discharge trough can bear the weight of the wear-resistant middle plate 33 and the slag material it transports, ensuring the stable operation of the equipment under high load conditions.

[0051] Side plates 34 of the slag discharge chute are installed on both sides of the slag discharge chute 3, serving as side walls of the material conveying channel. They are welded to the bottom plate and middle plate via welding or other fixed connections. The bottom plate 32 and the bottom plate 31 of the slag discharge chute form a stable, integrated structure. The function of the side plates 34 is to maintain the path of the slag material during conveying, guiding it to slide in a predetermined direction and preventing it from overflowing the slag discharge chute. The robust design of the side plates 34 enhances the overall rigidity of the slag discharge chute 3, ensuring its stability under heavy-load operating conditions.

[0052] The wear-resistant middle plate 33 of the slag discharge trough, together with the bottom plate 31 of the slag discharge trough, forms the return cavity 32 of the scraper chain assembly 8. The return cavity 32 provides operating space for the scraper chain assembly 8, allowing it to smoothly return to the starting point after completing the forward conveying of slag, ready for the next round of conveying work, without colliding with the bottom plate or side plates of the slag discharge trough 3. As the main sliding surface of the slag, the wear-resistant middle plate 33 is made of high-strength wear-resistant material, effectively resisting the wear of the scraper chain assembly 8 and the slag during conveying, preventing the slag discharge trough 3 from being damaged too quickly due to long-term use. The wear resistance of this component ensures the long-term durability of the slag discharge trough 3 and the reliable operation of the equipment.

[0053] The wear-resistant middle plate 33 of the slag discharge trough is mounted on the welded base plate 32 and serves as the main sliding surface for the slag. Made of high-strength wear-resistant material, the wear-resistant middle plate effectively resists wear on the scraper chain assembly 8 and the slag during conveying, preventing premature damage to the trough due to prolonged use. The wear resistance of this component ensures the long-term durability of the slag discharge trough 3 and the reliable operation of the equipment. Return chamber cleaning holes 36 are provided on the side plates 34 of the slag discharge trough 3 on both sides. The height of the return chamber cleaning holes 36 is aligned with the return chamber 32, facilitating the cleaning of accumulated slag within the return chamber 32 during equipment maintenance. This design reduces operational obstruction to the scraper chain assembly 8 caused by slag accumulation, ensuring the long-term reliability of the equipment.

[0054] The chain pressure plates 35 of the slag discharge chute are installed on both sides of the wear-resistant middle plate 33 of the slag discharge chute to prevent the scraper chain assembly 8 from shifting during operation. The chain pressure plates 35 can maintain the correct positioning of the chain, ensure that the scraper chain assembly runs smoothly and stably when transporting slag, and avoid failures or downtime caused by chain deviation.

[0055] Figure 8 for Figure 1 A perspective view of the driver component in the illustrated embodiment. Driver component 4 is as follows... Figure 8 As shown, it is mainly used to provide power to the scraper chain assembly 8, enabling the slag to be smoothly conveyed from the slag discharge trough 3 to the next stage of transportation equipment. The drive end assembly 4 consists of a drive device 41, a slag discharge trough drive section 42, and a secondary transport connector 43. Through the cooperation of these components, the power transmission function of the recycling device of the present invention is realized. The slag discharge trough drive section 42 is connected to the rear of the slag discharge trough 3 and is used to continue conveying the slag to the transportation equipment behind the recycling device of the present invention.

[0056] The drive unit 41 is the power source for the scraper conveyor and can be a hydraulic motor or an electric motor. The drive unit 41 is installed at the rear end of the slag discharge chute drive section 42 and is directly connected to the scraper chain assembly 8, providing sufficient power to drive the scraper chain assembly 8 in cyclic operation. The drive unit 41 can provide stable power output under high load conditions, ensuring continuous and stable conveying of slag, significantly improving the working efficiency and reliability of the device. The secondary conveyor connector 43 is used to securely install the recycling device of the present invention onto other equipment, achieving a reliable connection between the device and the external structure. The cooperation between the drive unit 41, the slag discharge chute drive section 42, the secondary conveyor connector 43, and the scraper chain assembly 8 in the drive section assembly 4 enables the slag recycling device of the present invention to effectively realize multiple functions of power transmission and slag conveying, improving the overall working efficiency and adaptability of the device.

[0057] Figure 9 for Figure 1 A perspective view of the two-way connector of the illustrated embodiment. Further, as... Figure 9As shown, the secondary transport connector 43 may include sub-components: a recovery device connecting frame 431, a trolley connecting frame 432, and pins 433 and 434. The recovery device connecting frame 431 is a welded structural component. As a connector between the recovery device and external equipment, the recovery device connecting frame 431 is hinged to the trolley connecting frame 432 via the rotating pin 434, allowing relative rotation and adjustment of the recovery device connecting frame 431 and the trolley connecting frame 432 within a certain range to adapt to different installation angles and operating environments. The trolley connecting frame 432 is a welded structural component, fixed to the supporting equipment via the connecting pin 433. The trolley connecting frame 432 provides a movable or fixed platform for the recovery device, ensuring that the equipment can be stably installed on the tunneling machine or coal mining machine. The connecting pin 433 and the rotating pin 434 are used to fix and hinge the various parts of the secondary transport connector. Connecting pin 433 secures the trolley connector 432 to the supporting equipment, while rotating pin 434 hinges the recovery device connecting frame 431 to the trolley connecting frame 432. This design allows the pin assembly to withstand multi-directional forces generated during transportation and maintain the structural stability of the entire device. The components of the secondary transport connector 43 are securely connected by bolts, nuts, and other fasteners, ensuring the drive section assembly 4 can be stably installed on the external support structure while maintaining sufficient flexibility to allow for rotation and adjustment at certain angles. This design not only increases the applicability and installation flexibility of the device but also ensures efficient operation and safety of the equipment in different working environments.

[0058] Figure 10 for Figure 1 A full sectional view of the right star wheel assembly in the embodiment shown. Figure 11 for Figure 1 The diagram shows a perspective view of the right star wheel assembly 5 in the embodiment shown. The right star wheel assembly 5 and the left star wheel assembly 6 are key components of the slag recovery device of this invention, used to guide the slag collected by the bucket assembly 1 from the front of the bucket along a circumferential path to the rear of the bucket, until it falls into the tail section 2 of the slag discharge chute. The right star wheel assembly 5 and the left star wheel assembly 6 are located on opposite sides of the bucket assembly 1, respectively, and are tightly fitted with the star wheel mounting holes 117 and 127 of the bucket assembly. Their rotation drives the movement of the slag, ensuring smooth delivery of the slag to the tail section 2 of the slag discharge chute. The right star wheel assembly 5 rotates clockwise, and the left star wheel assembly 6 rotates counterclockwise. Further, the surrounding... Figure 10 , Figure 11 The implementation method of the right star wheel assembly is described.

[0059] like Figure 11As shown, the right star wheel assembly 5 mainly includes a right star wheel drive motor 51, a right star wheel motor seat ring 52, a right star wheel rotating disk 53, and a right star wheel welded assembly 54. The right star wheel drive motor 51 serves as the power source for the right star wheel assembly 5 and is fixed to the right star wheel motor seat ring 52 by fasteners. The output shaft of the right star wheel drive motor 51 is tightly connected to the right star wheel rotating disk 53 via a spline connection, driving the rotating disk 53 to rotate and realizing power transmission between the drive motor and the rotating disk. The right star wheel drive motor 51 ensures stable rotational power for the star wheel assembly during operation. The right star wheel motor seat ring 52 is installed at the star wheel mounting hole of the bucket assembly 1 and fixed to the right bucket assembly 11 by fasteners. The main function of the right star wheel motor seat ring 52 is to provide fixed support for the right star wheel drive motor 51. Simultaneously, the right star wheel motor seat ring 52 and the right star wheel rotating disk 53 are connected by a first set of tapered roller bearings 56 to ensure smooth rotation of the star wheel.

[0060] The right star wheel rotary disk 53 is connected to the right star wheel drive motor 51 via a spline, and the right star wheel assembly 54 is fixed to the outer periphery of the right star wheel rotary disk 53 by fasteners. The right star wheel rotary disk 53 can transmit the rotational power of the drive motor 51 to the right star wheel assembly 54, causing it to rotate, thereby propelling the slag material towards the tail section 2 of the slag discharge trough. The right star wheel assembly 54 is a structural component fixed to the outer periphery of the right star wheel rotary disk 53, and the rotation of the rotary disk drives the slag material to move.

[0061] The right star wheel assembly 54 mainly includes a central first mounting ring 541 and a plurality of first fin-shaped teeth 542 evenly distributed and fixedly connected to the outside of the first mounting ring 541. In this embodiment, there are three first fin-shaped teeth 542. The first mounting ring 541 has bolt holes along its circumference for fixed connection to the right star wheel rotating disk 53. Each first fin-shaped tooth 542 includes a first shovel plate 544, a first guard plate 545, and a first triangular block 543 for propelling slag material backward. Figure 11 As shown, because the right star wheel assembly weldment 54 rotates clockwise to move the slag, the slag to be collected is located to the right of each first fin tooth 542. Figure 1As shown, to prevent slag from leaking through the gap between the first shovel plate 544 and the right bucket top plate 116, the bottom surface of the first shovel plate 544 is parallel and closely attached to the right bucket top plate 116. The first shovel plate 544 contacts the slag first, and its contact surface with the slag can be a vertical surface or an inclined surface. The first shovel plate 544 is fin-shaped, and its root is connected to the outer wall of the first mounting ring 541. The first shovel plate bends and extends outward along a clockwise spiral direction towards the outside of the first mounting ring 541, gradually narrowing to form a first sharp angle 546. The first sharp angle 546 can save effort when cutting into the slag pile. The bending direction of the first shovel plate 544 is: starting from the root of the first shovel plate 544, in a clockwise spiral direction towards the outside of the mounting ring 54. A first guard plate 545 is provided behind the first shovel plate 544 ("behind" means that because the right star wheel assembly 5 rotates clockwise, the first guard plate 545 contacts the slag later than the first shovel plate 544). The first guard plate 545 is perpendicular to the first shovel plate 544 and is fixedly connected to the outer wall of both the first shovel plate 544 and the first mounting ring 541. In this embodiment, the connection is made by welding. The function of the first guard plate 545 is to increase the overall thickness of the first fin-shaped teeth 542 and expand the range of slag size that the right star wheel assembly 5 can move. A first triangular block 543 can also be provided at the first sharp corner 546. The sharp corner of the first triangular block 543 faces outward, and the blunt edge faces inward. Due to centrifugal force, the slag will slide to the outside of the right star wheel assembly 5 during rotation. The function of the first triangular block 543 is to use the blunt edge to keep the slag inside the right star wheel assembly 54. This "inside" is the area formed by the blunt edge of the first triangular block 543, the first guard plate 545, and the first shovel plate 544. The structural design of the right star wheel assembly 54 meets the requirements for slag movement, ensuring that the slag can be smoothly moved backward without leakage, accumulation, or spillage. The right star wheel assembly weldment 54 can be made of high-strength steel or other wear-resistant materials, or its surface hardness or rust-proof properties can be enhanced by using anti-rust coatings or other surface treatments to increase its durability and corrosion resistance.

[0062] The first set of tapered roller bearings 56 is positioned between the right star wheel rotating disk 53 and the right star wheel motor seat ring 52, providing rotational support and reducing friction during rotation. A first locking nut 55 is fitted onto the end of the output shaft of the right star wheel motor seat ring 52, axially pressing against the inner ring of the first set of tapered roller bearings 56 near the root of the output shaft, and engaging with the stepped shaft of the right star wheel rotating disk 53 to axially position the first set of tapered roller bearings 56. The first set of tapered roller bearings 56 ensures smooth rotation of the right star wheel rotating disk 53, preventing wear or failure of the components due to vibration or uneven load. A first floating oil seal 57 is located between the right star wheel rotating disk 53 and the right star wheel motor seat ring 52, preventing dust and impurities from entering the bearing cavity, protecting the first set of tapered roller bearings 56 from contamination, while maintaining the seal of the lubricating oil, extending the service life of the bearings and other rotating components. The first O-ring 58 is disposed between the contact surfaces of the right star wheel drive motor 51 and the right star wheel motor seat ring 52 to prevent grease leakage and the entry of external impurities, ensuring the long-term stable operation of the internal components of the bearing sealing cavity. The term "bearing sealing cavity" refers to the sealed space between the star wheel rotating disk and the star wheel motor seat ring used to accommodate the bearing and its lubricating medium.

[0063] Figure 12 for Figure 1 A full sectional view of the left star wheel assembly in the embodiment shown. Figure 13 for Figure 1 The diagram shows a perspective view of the left star wheel assembly in the embodiment shown. The left star wheel assembly 6 is structurally similar to the right star wheel assembly 5, but its rotation direction is opposite to that of the right star wheel assembly 5 to ensure effective agitation and transmission of the slag on both sides. Specifically, the left star wheel assembly 6 rotates counterclockwise, therefore the rotation direction of the left star wheel drive motor 61 is opposite to that of the right star wheel drive motor 51.

[0064] The left star wheel assembly 6 mainly includes a left star wheel drive motor 61, a left star wheel motor seat ring 62, a left star wheel rotating disk 63, and a left star wheel welded assembly 64. The left star wheel drive motor 61 is fixed to the left star wheel motor seat ring 62 by fasteners, and its output shaft is tightly fitted to the left star wheel rotating disk 63 through a spline connection. The left star wheel rotating disk 63 is connected to the left star wheel welded assembly 64 and is used to transmit the rotational power of the left star wheel drive motor 61 to the left star wheel welded assembly 64.

[0065] Furthermore, the left star wheel assembly weldment 64 includes a second mounting ring 641 and a plurality of second fin-shaped teeth 642. Each second fin-shaped tooth 642 includes a second shovel plate 644, a second guard plate 645, and a second triangular block 643 for propelling slag backward. The bottom surface of the second shovel plate 644 is parallel and closely abuts the top plate 126 of the left bucket to ensure that slag does not leak from the plate surface. The second shovel plate 644 extends outward along a counterclockwise spiral direction towards the outside of the second mounting ring 641, gradually narrowing to form a second sharp angle 646. A second triangular block 643 is provided at the second sharp angle 646. The function of the second triangular block 643 is similar to that of the corresponding triangular block in the right star wheel assembly, for keeping slag inside the left star wheel assembly weldment 64. The second guard plate 645 is perpendicular to the second shovel plate 644 and is fixedly connected to the outer wall of the second shovel plate 644 and the second mounting ring 641, increasing the thickness and structural strength of the left star wheel assembly weldment 64 and ensuring that it can effectively transport slag of various sizes during the turning process. Since the spiral divergence direction of the left star wheel assembly weldment 64 is counterclockwise, it forms a slag turning path symmetrical with the right star wheel assembly weldment 54.

[0066] Furthermore, apart from the previously mentioned differences in components, the remaining parts (second locking nut 65, second set of tapered roller bearings 66, second floating oil seal 67, second O-ring seal 68) have the same function, role, and connection relationship as the corresponding parts of the right star wheel assembly 5 (first locking nut 55, first set of tapered roller bearings 56, first floating oil seal 57, first O-ring seal 58), and will not be described again. Star wheel assemblies 5 and 6 together ensure the stable operation of the recycling device and the effective agitation of the slag.

[0067] The technical scope of this invention is not limited to the contents of the above specification. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the scope of this invention.

Claims

1. A high efficiency TBM slag recovery device, characterized in that, The recycling device comprises: A bucket assembly (1) at the front end of the recycling device for collecting slag from the tunnel wall or ore body, the bucket assembly (1) comprising a right bucket assembly (11), a left bucket assembly (12) and a slag channel tail section (2), the right bucket assembly (11) and the left bucket assembly (12) being fixedly connected to the two sides of the slag channel tail section (2), respectively, and a groove (13) being formed in the middle of the right bucket assembly (11) and the left bucket assembly (12); A slag channel (3) fixedly connected to the rear of the bucket assembly (1) to form a material conveying channel communicating with the slag channel tail section (2); A right star wheel assembly (5) and a left star wheel assembly (6) installed on the upper part of the bucket assembly (1), respectively, the right star wheel assembly (5) and the left star wheel assembly (6) being connected with a rotating driving device, respectively, the right star wheel assembly (5) rotating clockwise and the left star wheel assembly (6) rotating counterclockwise to push the slag from the front end of the bucket assembly (1) to the rear along the two sides; A flight chain assembly (8) installed in the slag channel tail section (2) and the slag channel (3) to move circularly along the conveying channel for conveying the slag along the conveying channel to the conveying device behind the recycling device; A driving end assembly (4) for driving the circular movement of the flight chain assembly (8) and continuing to extend the conveying channel rearward behind the slag channel (3); A lifting oil cylinder assembly (7) connected to the rear of the bucket assembly (1) for adjusting the height and lifting angle of the bucket assembly (1).

2. The high efficiency TBM spoil recovery device of claim 1, wherein, The right bucket assembly (11) comprises a right bucket bottom plate (111), a right bucket back plate (112), a first trough connecting plate (114), a right bucket inclined plate (115) and a right bucket top plate (116), the right bucket bottom plate (111) is in an arc structure, closely contacts with the circular section of the tunnel bottom arch, and is used for guiding the slag to slide above the right bucket assembly (11), the right bucket back plate (112) is installed at the rear end of the right bucket assembly (11), is used for preventing the slag from falling from the rear of the right bucket assembly (11), and is used for guiding the slag into the groove (13), the right bucket inclined plate (115) is arranged above the right bucket bottom plate (111) and is connected to the front end of the right bucket bottom plate (111), is used for guiding the slag to the right bucket top plate (116), the right bucket top plate (116) is located at the top of the right bucket assembly (11), is used for collecting and temporarily storing the slag, and cooperates with the right star wheel assembly (5) to convey the slag to the slag outlet trough tail section (2), the first trough connecting plate (114) is used for fixedly connecting the right bucket assembly (11) to the side of the slag outlet trough tail section (2), the first star wheel mounting hole (117) is arranged in the right bucket top plate (116) and is used for mounting the right star wheel assembly (5), and the first oil cylinder lifting lug (113) is arranged in the right bucket back plate (112) and is connected to the lifting oil cylinder assembly (7), and is used for adjusting the height and angle of the bucket assembly (1).

3. The high efficiency TBM spoil recovery device of claim 2, wherein, The left bucket assembly (12) comprises a left bucket bottom plate (121), a left bucket back plate (122), a second trough connecting plate (124), a left bucket inclined plate (125) and a left bucket top plate (126), the left bucket bottom plate (121) is in an arc structure, closely contacts with the circular section of the tunnel bottom arch, and is used for guiding the slag to slide above the left bucket assembly (12), the left bucket back plate (122) is installed at the rear end of the left bucket assembly (12), is used for preventing the slag from falling from the rear of the left bucket assembly (12), and is used for guiding the slag into the groove (13), the left bucket inclined plate (125) is arranged above the left bucket bottom plate (121) and is connected to the front end of the left bucket bottom plate (121), is used for guiding the slag to the left bucket top plate (126), the left bucket top plate (126) is located at the top of the left bucket assembly (12), is used for collecting and temporarily storing the slag, and cooperates with the left star wheel assembly (6) to convey the slag to the slag outlet trough tail section (2), the second trough connecting plate (124) is used for fixedly connecting the left bucket assembly (12) to the side of the slag outlet trough tail section (2), the second star wheel mounting hole (127) is arranged in the left bucket top plate (126) and is used for mounting the left star wheel assembly (6), and the second oil cylinder lifting lug (123) is arranged in the left bucket back plate (122) and is connected to the lifting oil cylinder assembly (7), and is used for adjusting the height and angle of the bucket assembly (1).

4. The high efficiency TBM spoil recovery apparatus of claim 2 or 3, wherein, The slag notch tail section (2) includes a redirection wheel assembly (21), a middle bucket plate (23), a guide wear plate (25), a chain pressing plate (26), a right bucket chute connecting plate (27), a chute wear plate (28), a slag chute connecting plate (29), a cover plate (210), a left bucket chute connecting plate (2102), and a slag chute tail section bottom plate (2104). The slag notch tail section (2) is located between the right bucket assembly (11) and the left bucket assembly (12). The redirection wheel assembly (21) is used to redirect the return flight of the flight chain assembly (8) by 180 degrees and is fixedly connected to the right bucket chute connecting plate (27) and the left bucket chute connecting plate (2102) through the redirection wheel pressing plate (24). The chain pressing plate (26) is used to limit the movement of the flight chain assembly (8). The guide chute (22) is located inside the slag notch tail section (2) and has a forward opening. The middle bucket plate (23) is used to guide the slag to flow into the guide chute (22). The guide wear plate (25) and the chute wear plate (28) are arranged at the bottom of the groove (13). The right bucket chute connecting plate (27) and the left bucket chute connecting plate (2102) support and fix the right bucket assembly (11) and the left bucket assembly (12), respectively. The slag chute tail section bottom plate (2104) is arc-shaped and closely fits the circular cross-section of the tunnel bottom arch.

5. The high efficiency TBM slurry recovery apparatus of claim 4, wherein, The redirection wheel assembly (21) includes a core shaft (211), a guide wheel (212), and an axle system assembly (2111). The core shaft (211) penetrates through the entire redirection wheel assembly (21). Two bearings (218) are installed at both ends of the core shaft (211). A spacer (215) is arranged between the two bearings (218) at both ends of the core shaft (211). The guide wheel (212) is sleeved outside the bearing (218). The axle system assembly (2111) includes a floating cover (213), a floating seat (214), and a floating oil seal (217). The floating oil seal (217) is installed at the outer end of the bearing (218). The floating seat (214) and the floating cover (213) are fixed at both ends of the core shaft (211) and fixedly connected to the inside of the slag notch tail section (2) through fasteners.

6. The high efficiency TBM spoil recovery device of claim 1, wherein, The slag outlet channel (3) is located behind the slag outlet channel tail section (2), used to receive slag from the slag outlet channel tail section (2) and transport it backward along the predetermined conveying channel, the slag outlet channel (3) includes a slag outlet channel bottom plate (31), a slag outlet channel wear-resistant middle plate (33), a slag outlet channel side plate (34), a slag outlet channel pressure chain plate (35) and a return cavity (32), the slag outlet channel bottom plate (31) is located at the bottom of the slag outlet channel (3), the slag outlet channel wear-resistant middle plate (33) is arranged above the return cavity (32), the slag outlet channel side plate (34) is installed on both sides of the slag outlet channel (3), the slag outlet channel pressure chain plate (35) is arranged on both sides of the slag outlet channel wear-resistant middle plate (33), used to prevent the scraper chain assembly (8) from moving during operation, and the return cavity slag removal hole (36) is arranged on the slag outlet channel side plate (34).

7. The high efficiency TBM slurry recovery apparatus of claim 1 wherein, The driving end assembly (4) includes a driving device (41), a slag outlet channel driving section (42) and a secondary conveying connecting piece (43), the slag outlet channel driving section (42) is connected to the rear of the slag outlet channel (3), used to continue conveying the slag to the rear of the recycling device, the driving device (41) is installed at the rear end of the slag outlet channel driving section (42) and directly connected with the scraper chain assembly (8), and the secondary conveying connecting piece (43) is used to fix the recycling device to other equipment.

8. The high efficiency TBM slurry recovery apparatus of claim 7, wherein, The secondary conveying connecting piece (43) includes a recycling device connecting frame (431) and a trolley connecting frame (432), the recycling device connecting frame (431) is hinged to the trolley connecting frame (432) through a rotating pin shaft (434), and the trolley connecting frame (432) is hinged to an external supporting equipment through a connecting pin shaft (433).

9. The high efficiency TBM slurry recovery apparatus of claim 2, wherein, The right star wheel assembly (5) includes a right star wheel driving motor (51), a right star wheel motor race (52), a right star wheel rotating disc (53) and a right star wheel group welding piece (54), the right star wheel driving motor (51) is fixed to the right star wheel motor race (52) through fasteners, the output shaft thereof is connected with the right star wheel rotating disc (53) through spline connection, the right star wheel rotating disc (53) is connected with the right star wheel group welding piece (54), and the right star wheel group welding piece (54) includes a first mounting ring (541) and a plurality of first fin-shaped teeth (542). Each first fin-shaped tooth (542) includes a first shovel plate (544), a first guard plate (545) and a first triangular block (543), used to move the slag backward, the bottom surface of the first shovel plate (544) is parallel to and close to the right shovel top plate (116), the first shovel plate (544) extends outwardly along a clockwise spiral line direction of the first mounting ring (541), gradually narrows, forms a first sharp corner (546) at the top of the first shovel plate (544), the first triangular block (543) is arranged at the first sharp corner (546), the first guard plate (545) is perpendicular to the first shovel plate (544) and is fixedly connected with the first shovel plate (544) and the first mounting ring (541).

10. The high efficiency TBM slurry recovery apparatus of claim 3, wherein, The left star wheel assembly (6) comprises a left star wheel driving motor (61), a left star wheel motor race (62), a left star wheel rotating disc (63) and a left star wheel group weldment (64), the left star wheel driving motor (61) is fixed to the left star wheel motor race (62) through fasteners, the output shaft is tightly matched with the left star wheel rotating disc (63) through a spline connection, the left star wheel rotating disc (63) is connected with the left star wheel group weldment (64), the left star wheel group weldment (64) comprises a second mounting ring (641) and a plurality of second fin-shaped teeth (642), each second fin-shaped tooth (642) comprises a second spade plate (644), a second guard plate (645) and a second triangular block (643), and is used for stirring the slag to be conveyed backward, the bottom surface of the second spade plate (644) is parallel to and close to the left spade top plate (126), the second spade plate (644) is curved and extended to the outside of the second mounting ring (641) along the counterclockwise spiral line direction, gradually narrows, forms a second sharp corner (646) at the top of the second spade plate (644), the second triangular block (643) is arranged at the second sharp corner (646), the second guard plate (645) is perpendicular to the second spade plate (644) and is fixedly connected with the second spade plate (644) and the second mounting ring (641) at the same time.

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