A full-face hard rock tunneling machine

Abstract

The application discloses a full-face hard rock tunneling machine, and relates to the field of tunneling machines.The tunneling machine frame comprises a rotary cutter head, a spiral conveyor and a trailer.The rotary cutter head is used for excavating soil and stone waste materials in the tunneling process.The spiral conveyor sprays liquid on the soil materials in the conveying process, and the soil material differential speed assembly is used for controlling the speed of the soil materials.The soil materials on the trailer are further processed by a crushing and leveling machine.When the amount of the falling slag is too large, the transition transfer machine moves backward along the slide arranged in the trailer transfer machine head frame under the action of the translation oil cylinder, and the slag soil is transferred to the tail frame of the continuous belt conveyor, and then is transferred to the material car or is conveyed out of the tunnel.The existing novel full-face hard rock tunneling machine still has some defects in the treatment details of the excavated soil materials.The application can process the soil materials, and solves the backfilling problem of the novel full-face hard rock tunneling machine.

Description

Technical Field

[0001] This invention relates to the fields of construction, geology, and machinery, specifically to a full-face hard rock tunnel boring machine. Background Technology

[0002] Existing full-face hard rock tunnel boring machines (MTBGs) primarily use a rotary cutterhead to crush and recover the soil and rock layers ahead, resulting in a circular tunnel. However, this circular tunnel cannot meet the needs of transporting other equipment and materials, or accommodating construction personnel. To accommodate these needs, the construction team must use specialized backfilling equipment to perform secondary backfilling of the circular tunnel created by the MTBG, leveling the bottom of the tunnel into an arched shape. This undoubtedly increases construction costs and time.

[0003] A new type of full-face hard rock tunnel boring machine is proposed. This new full-face hard rock tunnel boring machine can realize one-time forming of tunnel backfilling during the tunneling process, improve the cross-sectional utilization rate of the full-face hard rock tunnel boring machine, reduce the construction intensity of workers, and improve construction efficiency and integration degree of the full-face hard rock tunnel boring machine. Summary of the Invention

[0004] The purpose of this invention is to provide a full-face hard rock tunnel boring machine to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a full-face hard rock tunneling machine.

[0006] The tunneling machine includes a frame, a rotary cutter head, a screw conveyor, and a tail trailer. The rotary cutter head is installed at the front end of the frame, the screw conveyor in the middle, and the tail trailer at the rear. A liquid spraying component is installed below the screw conveyor, and a soil differential speed assembly is installed at the upper discharge port. A trailer transfer machine frame is installed above the tail trailer. A crusher and leveler is vertically installed downwards in the middle of the trailer transfer machine frame. A pressure feedback device is vertically installed at the front of the tail trailer, and a trailer baffle is installed below the rear of the tail trailer. The pressure feedback device provides an electrical signal that connects to the soil differential speed assembly. The trailer transfer machine frame is connected to the trailer transfer machine head frame via multiple hinge pins. The trailer transfer machine head frame is located above and behind the tail trailer. A rotary sweeper is installed below the trailer transfer machine head frame. The transfer machine is installed on the trailer... Above and behind the transfer conveyor frame, slide rails are installed on the tail trailer, the head frame of the trailer transfer conveyor, and inside the transition transfer conveyor. The tail trailer slides into the slide rail of the head frame of the trailer transfer conveyor, and the head frame of the trailer transfer conveyor slides into the slide rail of the transition transfer conveyor. The cylinder of the translation cylinder is installed below the head frame of the trailer transfer conveyor, and the translation cylinder is installed below the transition transfer conveyor. A towing cylinder connecting seat is provided at the rear of the head frame of the trailer transfer conveyor. The head frame of the trailer transfer conveyor is connected to the tail frame of the continuous belt conveyor through the towing cylinder. The material car is placed on top of the backfill soil. Slide rails are provided on the top and inside of the material car. Stepping support shoes are installed inside the material car, and the stepping support shoes slide into the horizontal slide rail inside the material car. The tail frame of the continuous belt conveyor is installed in front of the material car. A rotary sweeper is installed below the main frame. A balancing frame is installed above and behind the head frame of the trailer transfer machine. The balancing frame has wheels that slide in a sliding engagement with a track on the top of the material cart. A track is also installed on the tail frame of the continuous belt conveyor. A pushing cylinder is installed above the tail frame of the continuous belt conveyor and slides in a sliding engagement with the track on the tail frame via a pusher bucket. When the main body of the full-face hard rock tunnel boring machine moves forward, the rotating cutter head, liquid spray components, tail trailer, trailer transfer machine frame, and trailer transfer machine head frame move forward together. The piston rod of the pulling cylinder extends, while the tail frame of the continuous belt conveyor and the material cart remain in their original positions. The balancing frame, connected to the head frame of the trailer transfer machine, moves forward on the track above the material cart using its wheels. When the rotating cutter head is driven, it moves forward... The soil and rock layers are crushed, and the soil is transferred to a screw conveyor. During the transport process, a liquid spraying component can add liquid to the soil. When the soil is transferred from the screw conveyor to the chute in front of the tail trailer, a pressure feedback device senses the soil pressure. When the soil pressure exceeds the set limit, the pressure feedback device sends a signal to the soil differential component. Upon receiving the signal, the soil differential component controls the baffle plate to descend, controlling the discharge speed of the screw conveyor. Then, the soil is transported inward through the chute inside the tail trailer. The crushing and leveling machine on the trailer transfer machine frame crushes and levels larger stones on the chute. By adjusting the forward and backward position of the transfer machine using the translation cylinder, adaptive adjustment of the slag discharge speed and amount can be achieved.When the crushed soil reaches the appropriate weight, it is transferred to the transition transfer machine via a slide rail inside the head frame of the trailer-mounted transfer machine and then piled up at the bottom of the circular tunnel. A rotary sweeping plate located below the head frame of the trailer-mounted transfer machine performs a planar circular motion, initially cleaning and leveling the backfill soil piled at the bottom of the tunnel. The pusher bucket on the front side of the continuous belt conveyor's tail frame slides forward along the slide rail on the tail frame of the continuous belt conveyor under the action of the pusher cylinder piston rod, leveling the soil in front. The bottom surface of the material cart is set as a flat surface, and the backfill soil can be further compacted by the weight of the material cart itself. When there is too much crushed soil, the transfer conveyor, under the action of the translation cylinder, moves backward along the slide rails inside the tail trailer and the head frame of the trailer transfer conveyor, transferring the slag to the tail frame of the continuous belt conveyor. The tail frame of the continuous belt conveyor then transfers the slag to the material car or tunnel. Afterward, the stepping support shoe inside the material car extends and tightens against the ground, raising the material car frame. At this time, the stepping support shoe is located at the front of the material car. The piston rod of the drag cylinder retracts, pulling the tail frame of the continuous belt conveyor and the material car forward. After one step of the material car is completed, the stepping support shoe inside the material car returns to its initial position.

[0007] The liquid spraying component is installed below the screw conveyor. An inlet pipe is located at the center of the component, and a rotary switch is located on its upper side. The transport direction of the inlet pipe is perpendicular to the transport direction of the screw conveyor. A reverse osmosis port is installed at the interface between the liquid spraying component and the screw conveyor, connecting to a delivery pipe. The transport direction of this delivery pipe is perpendicular to the transport direction of multiple branch delivery pipes. The delivery pipe is connected to these branch delivery pipes. Liquid enters through the inlet pipe, and the rotary switch controls the liquid flow rate. The liquid flows through the reverse osmosis port into the delivery pipe, which is connected to the branch delivery pipes, thus allowing the liquid to enter the screw conveyor. Adding water achieves a dust removal effect.

[0008] A pressure feedback device is vertically mounted at the front of the tail trailer. A transmission block is installed above the pressure feedback device, and a signal feedback component is installed below the transmission block. When the transmission block receives an overload pressure signal, the signal feedback component sends an electrical signal back. A soil differential assembly is installed above the discharge port at the front of the screw conveyor. A baffle plate is installed inside the soil differential assembly, with the baffle plate extending perpendicular to the discharge direction. The soil differential assembly receives an electrical signal to control the baffle plate to descend. The pressure feedback device is connected to the soil differential assembly via an electrical signal. The pressure feedback device senses the weight of the soil above. When the soil pressure exceeds a set limit, the transmission block descends to compress the signal feedback component, which then sends an electrical signal back out. After receiving the electrical signal, the soil differential assembly controls the baffle plate to descend, thereby controlling the discharge speed of the screw conveyor to achieve a suitable discharge volume.

[0009] The fixed frame is welded to the soil differential assembly perpendicular to the discharge direction. Compared with threaded, keyed, and riveted connections, welded connections have higher strength and load-bearing capacity. Welded connections allow the soil differential assembly to receive signals and make it more stable during the process of lowering the baffle plate to reduce the soil speed.

[0010] A crusher and leveler is vertically mounted inside the frame of the trailer transfer machine. A cam is installed at the top of the crusher and leveler frame for transmission. A rebound mechanism is installed on the bottom of the crusher and leveler frame, and a roller is installed at the top of the rebound mechanism. The cam is in vertical contact with the roller. A longitudinal transmission rod is vertically mounted inside the rebound mechanism and is vertically connected to a transverse transmission rod. The transverse transmission rod is horizontally connected to the crushing drill bit. In the crusher and leveler, the cam and roller contact each other, and the cam compresses and drives the rebound mechanism. The rebound mechanism is connected to the transverse and longitudinal transmission rods to crush and level larger stones on the slide, so that larger soil materials that have accumulated locally on the slide are crushed and leveled. This solves the problem of local overload on the slide and the problem of excessively large soil materials affecting the flatness of the soil surface during soil backfilling.

[0011] A towing cylinder is installed behind the head frame of the trailer-mounted transfer machine. A towing piston rod is installed on the towing cylinder, and the towing piston rod is connected to the cylinder connecting seat. The cylinder connecting seat is installed above the tail frame of the continuous belt conveyor. The towing cylinder is used to connect the head frame of the trailer-mounted transfer machine and the tail frame of the continuous belt conveyor, and plays the role of transmitting power to the tail frame of the continuous belt conveyor.

[0012] The towing cylinder is welded to the rear of the head frame of the trailer transfer machine. The towing cylinder connecting seat is welded to the top of the tail frame of the continuous belt conveyor. Since the main function of the towing cylinder is to pull the tail frame of the continuous belt conveyor and the material car has a large transmission power, it is installed by welding.

[0013] A pusher cylinder is installed above the tailstock of the continuous belt conveyor. A pusher piston rod is installed inside the cylinder, and a pusher bucket is mounted at the front end of the piston rod. The cylinder is installed at the tail of the conveyor. Driven by the piston rod, the pusher bucket slides forward along a track on the tailstock, leveling the soil in front and ensuring the backfill height and flatness meet requirements. The material cart is equipped with vertically movable stepping support shoes inside. The stepping support shoes inside the material cart extend and tighten the ground, which can raise the material cart frame and allow the soil to leak out from below. The material cart can hold a lot of soil. The bottom of the material cart is set to be flat. Relying on the weight of the material cart itself, it can further compact the backfill soil.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. The present invention uses a liquid spraying component, which can fully spray and stir the soil entering the screw conveyor, pre-treat the freshly excavated soil, and achieve the effect of dust removal while adding liquid.

[0015] 2. This invention employs a pressure feedback device and a soil differential speed component. When the soil pressure above the pressure feedback device exceeds the set pressure limit, the pressure feedback device will send an electrical signal to the soil differential speed component. After receiving the electrical signal, the soil differential speed component controls the baffle plate to descend, thereby controlling the discharge speed of the screw conveyor to achieve a suitable discharge volume.

[0016] 3. This invention uses a crushing and leveling machine. For larger soil materials that appear under the crushing of the rotating cutter head, they will be further processed, crushed and leveled on the slide. This will crush and level the larger soil materials that are locally gathered on the slide, thus solving the problem of local overload on the slide and the problem of excessively large soil materials affecting the flatness of the soil surface during the backfilling process. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is an enlarged structural diagram of the internal structure of the liquid spraying component of the present invention; Figure 3 This is a three-dimensional structural schematic diagram of the soil differential component of the present invention; Figure 4 This is a three-dimensional structural schematic diagram of the gravity feedback device of the present invention; Figure 5 This is a schematic diagram of the internal structure of the crushing and leveling machine of the present invention; Figure 6 This is a schematic diagram of the towing cylinder structure of the present invention; Figure 7 This is a schematic diagram of the pusher cylinder structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the material cart of the present invention; Figure 9 This is a cross-sectional structural schematic diagram of the screw conveyor of the present invention; In the diagram: 1. Rotary cutter head; 2. Liquid spraying component; 21. Rotary switch; 22. Reverse seepage inlet; 23. Liquid delivery pipeline; 24. Liquid delivery branch pipeline; 25. Liquid inlet pipeline; 3. Screw conveyor; 4. Soil differential speed assembly; 41. Baffle plate; 42. Fixing frame; 5. Tail trailer; 6. Crusher and paver; 61. Cam; 62. Rotary wheel; 63. Rebound mechanism; 641. Longitudinal drive rod; 642. Lateral drive rod; 65. Crusher bit; 66. Crusher and paver frame; 7. Trailer transfer machine frame; 8. Hinge pin; 9. Trailer transfer machine head frame; 10. 11. Transfer machine; 12. Translation cylinder; 13. Traction cylinder; 14. Traction cylinder barrel; 15. Traction cylinder piston rod; 16. Traction cylinder connecting seat; 17. Continuous belt conveyor tail frame; 18. Material cart; 19. Material cart frame; 10. Stepping support shoe; 11. Balancing frame; 12. Traveling wheel; 13. Pressure feedback device; 14. Transmission block; 15. Signal feedback component; 16. Trailer baffle plate; 17. Rotary sweeping plate; 28. Pushing cylinder; 29. ​​Pushing cylinder barrel; 20. Pushing cylinder piston rod; 20. Push bucket. Detailed Implementation

[0018] 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.

[0019] This invention provides a technical solution: such as Figure 1As shown, the tunneling machine includes a frame, a rotary cutter head 1, a screw conveyor 3, and a tail trailer 5. The rotary cutter head 1 is installed at the front end of the frame, the screw conveyor 3 is installed in the middle, and the tail trailer 5 is installed at the rear end. A liquid spraying component 2 is installed below the screw conveyor 3, and a soil differential speed assembly 4 is installed at the upper discharge port. A trailer transfer machine frame 7 is installed above the tail trailer 5. A crusher and leveler 6 is installed vertically downwards in the middle of the trailer transfer machine frame 7. A pressure feedback device 17 is installed vertically at the front of the tail trailer 5, and a trailer baffle plate 18 is installed below the rear of the tail trailer 5. The pressure feedback device 17 provides an electrical signal that connects to the soil differential speed assembly 4. The trailer transfer machine frame 7 is connected to the trailer transfer machine head frame 9 via multiple hinge pins 8. The trailer transfer machine head frame 9 is located above and behind the tail trailer 5. A rotary sweeper 19 is installed. A transition transfer machine 10 is installed above and behind the trailer transfer machine frame 7. Slides are provided inside the tail trailer 5, the trailer transfer machine head frame 9, and the transition transfer machine 10. The tail trailer 5 slides with the trailer transfer machine head frame 9, and the trailer transfer machine head frame 9 slides with the transition transfer machine 10. The cylinder of the translation cylinder 11 is installed below the trailer transfer machine head frame 9. The translation cylinder 11 is installed below the transition transfer machine 10. A towing cylinder connecting seat 123 is provided at the tail end of the trailer transfer machine head frame 9. The trailer transfer machine head frame 9 is connected to the continuous belt conveyor tail frame 13 via the towing cylinder 12. A material cart 14 is placed above the backfill material. Slides are provided on the top and inside of the material cart 14. A stepping support shoe 142 is installed inside the material cart 14. The stepping support shoe 142 slides in conjunction with the horizontal slide rail inside the material cart 14. The tail frame 13 of the continuous belt conveyor is installed in front of the material cart 14. A rotary sweeping plate 19 is installed below the tail frame 13 of the continuous belt conveyor. A balancing frame 15 is installed above the rear of the head frame 9 of the trailer transfer machine. The walking wheels 16 are installed on the balancing frame 15 and slide in conjunction with the slide rail set on the top of the material cart 14. A slide rail is set on the tail frame 13 of the continuous belt conveyor. The pushing cylinder 20 is installed above the tail frame 13 of the continuous belt conveyor. The pushing cylinder 20 slides in conjunction with the slide rail on the tail frame 13 of the continuous belt conveyor through the push bucket 203. When the main body of the full-face hard rock tunneling machine moves forward, the rotating cutter head 1, the liquid spraying component 2, the tail trailer 5, and the trailer transfer machine frame 7 are all present. The trailer transfer machine head frame 9 moves forward together, the piston rod 122 of the drag cylinder extends, the continuous belt conveyor tail frame 13 and the material cart 14 remain in place, and the balance frame 15 connected to the trailer transfer machine head frame 9 moves forward on the slide above the material cart 14 by the traveling wheels 16.When the rotating cutter head 1 is driven, it crushes the soil and rock layer in front. The soil is then transferred to the screw conveyor 3. During the transportation process, the liquid spraying component 2 can add liquid to the soil, which is fully mixed during transportation, achieving a soil pretreatment effect. When the soil is transferred from the screw conveyor 3 to the slide in front of the tail trailer 5, the pressure feedback device 17 senses the pressure of the soil. When the pressure value is normal, the pressure feedback device 17 does not send a feedback signal. When the soil pressure value exceeds the set limit, the pressure feedback device 17 sends a feedback signal to the soil differential component 4. After receiving the signal, the soil differential component 4 controls the baffle plate 41 to descend, controlling the discharge speed of the screw conveyor 3. Then, the soil is transported inward through the slide inside the tail trailer 5. The crusher and leveler 6 on the trailer transfer machine frame 7 crushes and levels the larger stones on the slide, so that the larger stones that are locally accumulated on the slide are crushed and leveled, solving the problem of local overload on the slide. By adjusting the forward and backward position of the transfer conveyor 10 using the translation cylinder 11, adaptive adjustment of the slag discharge speed and amount can be achieved. When the crushed soil is of suitable size, it is transferred to the transfer conveyor 10 via the slide rails set inside the tail trailer 5 and the head frame 9 of the trailer transfer conveyor, and then piled up to the bottom of the circular tunnel. The rotary sweeping plate 19 located below the head frame of the trailer transfer conveyor performs a planar circular motion to initially clean and level the backfill soil piled up at the bottom of the tunnel. The push bucket 203 on the front side of the tail frame 13 of the continuous belt conveyor slides forward along the slide rail on the tail frame 13 of the continuous belt conveyor under the action of the piston rod 202 of the push cylinder, pushing the soil in front to level it, ensuring that the backfill height and flatness meet the requirements. The bottom surface of the material car 14 is set as a plane, relying on the material car 1 4. Its own weight can further compact the backfill soil. When there is too much crushed soil, the transfer machine 10 moves backward along the slide rail set inside the tail trailer 5 and the head frame 9 of the trailer transfer machine under the action of the translation cylinder 11, and transfers the soil to the tail frame 13 of the continuous belt conveyor. The tail frame 13 of the continuous belt conveyor transfers the soil to the material car 14 or the tunnel. Then, the stepping support shoe 142 inside the material car 14 extends and supports the ground to raise the car frame 141. At this time, the stepping support shoe 142 is located at the front side inside the material car 14. The piston rod 122 of the drag cylinder retracts and pulls the tail frame 13 of the continuous belt conveyor and the material car 14 forward. After the material car 14 completes one step, the stepping support shoe 142 inside the material car 14 returns to the initial position.

[0020] like Figure 2 , 9As shown, the liquid spraying component 2 is installed below the screw conveyor 3. The liquid spraying component 2 has an inlet pipe 25 at its center and a rotary switch 21 on its upper side. The transport direction of the inlet pipe 25 is perpendicular to the transport direction of the screw conveyor 3. A reverse osmosis port 22 is installed at the interface between the liquid spraying component 2 and the screw conveyor 3. The reverse osmosis port 22 is connected to the delivery pipe 23. The transport direction of the delivery pipe 23 is perpendicular to the transport direction of multiple delivery branch pipes 24. The delivery pipe 23 is connected to the multiple delivery branch pipes 24. Liquid enters from the inlet pipe 25. The rotary switch 21 can control the liquid flow rate. The liquid flows into the delivery pipe 23 through the reverse osmosis port 22. The delivery pipe 23 is connected to the delivery branch pipes 24, so that the liquid enters the interior of the screw conveyor 3. Adding water can achieve the effect of dust removal.

[0021] like Figure 1 , 3 As shown in Figure 4, a pressure feedback device 17 is vertically installed at the front of the tail trailer 5. A transmission block 171 is installed on the upper part of the pressure feedback device 17, and a signal feedback component 172 is installed below the transmission block 171. When the transmission block 171 receives an overload pressure signal, the signal feedback component 172 sends a feedback electrical signal. A soil differential assembly 4 is installed above the discharge port at the front of the screw conveyor 3. A baffle plate 41 is installed inside the soil differential assembly 4, with the baffle plate 41 extending perpendicular to the discharge direction. The pressure feedback device 17 is connected to the soil differential assembly 4 via an electrical signal. When the soil differential assembly 4 receives the feedback electrical signal from the pressure feedback device 17, it controls the baffle plate 41 to descend. The pressure feedback device 17 senses the weight of the soil above. When the soil pressure value exceeds the set limit, the transmission block 171 will descend and press the signal feedback component 172. The signal feedback component 172 will then send a feedback electrical signal. After receiving the electrical signal, the soil differential assembly 4 controls the baffle plate 41 to descend, thereby controlling the discharge speed of the screw conveyor 3 to achieve a suitable discharge volume.

[0022] like Figure 3 As shown, the fixed frame 42 is welded to the soil differential assembly 4 perpendicular to the discharge direction. The welded connection has higher connection strength and load-bearing capacity than the threaded connection, key connection, and riveted connection. The welded connection can make the soil differential assembly 4 receive signals and be more stable during the process of lowering the baffle plate 41 to reduce the soil speed.

[0023] like Figure 1 , 5As shown, a pulverizer and leveler 6 is vertically mounted downwards inside the frame 7 of the trailer transfer machine. A cam 61 is installed at the top inside the frame 66 of the pulverizer and leveler for transmission. A spring mechanism 63 is installed on the bottom surface of the frame 66 of the pulverizer and leveler, and a rotating wheel 62 is installed at the top of the spring mechanism 63. The cam 61 is in perpendicular contact with the rotating wheel 62. A longitudinal transmission rod 641 is vertically mounted inside the spring mechanism 63. The longitudinal transmission rod 641 is vertically connected to a transverse transmission rod 642. The transverse transmission rod 642 is horizontally connected to the pulverizing drill bit 65. In the crushing and paving machine 6, the cam 61 and the rotating wheel 62 are in contact. The cam 61 compresses and drives the rebound mechanism 63. The rebound mechanism 63 is connected to the transverse transmission rod 642 and the longitudinal transmission rod 641. The rebound mechanism 63 controls the crushing drill bit 65 to move up and down reciprocatingly, crushing and paving larger stones on the slide, so that larger soil materials that are locally accumulated on the slide are crushed and paved, solving the problem of local overload averaging of the slide and the problem of soil materials being too large and affecting the flatness of the soil surface during the backfilling process.

[0024] like Figure 1 , 6 As shown, a towing cylinder 121 is installed behind the head frame 9 of the trailer transfer machine. A towing cylinder piston rod 122 is installed on the towing cylinder 121. The towing cylinder piston rod 122 is connected to the cylinder connecting seat 123. The towing cylinder connecting seat 123 is installed above the tail frame 13 of the continuous belt conveyor. The towing cylinder 12 is used to connect the head frame 9 of the trailer transfer machine and the tail frame 13 of the continuous belt conveyor, and plays the role of transmitting power to the tail frame 13 of the continuous belt conveyor.

[0025] like Figure 1 , 6 As shown, the towing cylinder 121 is welded to the rear of the trailer transfer machine head frame 9, and the towing cylinder connecting seat 123 is welded to the top of the continuous belt conveyor tail frame 13. Because the main function of the towing cylinder 12 is to tow the continuous belt conveyor tail frame 13 and the material car 14 behind it, the transmission power is relatively large, so the welding fixing method is used for installation.

[0026] like Figure 1 , 7 As shown, a pusher cylinder 201 is installed above the tail frame 13 of the continuous belt conveyor. A pusher cylinder piston rod 202 is installed inside the pusher cylinder 201. A pusher bucket 203 is installed at the front end of the pusher cylinder piston rod 202. The pusher cylinder 201 is installed at the tail of the continuous belt conveyor. Under the push of the pusher cylinder piston rod 202, the pusher bucket 203 slides forward along the slide on the tail frame 13 of the continuous belt conveyor, pushing the soil in front to level it, ensuring that the backfill height and flatness meet the requirements.

[0027] like Figure 8The material cart 14 is equipped with a stepping support shoe 142 that can move up and down. The material cart frame 141 is also equipped with the stepping support shoe 142. The stepping support shoe 142 inside the material cart 14 extends and supports the ground, which can raise the material cart frame 141 and allow the soil to leak out from below. The material cart 14 can hold too much soil. The bottom surface of the material cart 14 is set as a flat surface. The material cart 14 can further compact the backfill soil by its own weight.

[0028] The working principle of this invention: When the full-face hard rock tunnel boring machine moves forward, the rotating cutter head 1, the liquid spraying component 2, the tail trailer 5, the trailer transfer machine frame 7, and the trailer transfer machine head frame 9 move forward together. The piston rod 122 of the drag cylinder extends, and the tail frame 13 of the continuous belt conveyor and the material car 14 remain in place. The balance frame 15, connected to the trailer transfer machine head frame 9, moves forward on the slide above the material car 14 by the traveling wheels 16. The rotating cutter head 1 crushes the rock and soil layer in front, and the soil is transferred to the screw conveyor 3. During the transportation process of the screw conveyor 3, the liquid spraying component 2 can add liquid to the soil. When the soil is transferred from the screw conveyor 3 to the tail trailer... When the material slides along the chute in front of the trailer 5, the pressure feedback device 17 senses the pressure of the soil and controls the discharge speed of the screw conveyor 3. Then, the soil is transported inward through the chute inside the tail trailer 5. The crusher and leveler 6 on the trailer transfer machine frame 7 crushes and levels the larger stones on the chute. The translation cylinder 11 adjusts the front and rear positions of the transfer machine 10. After the crushed soil is transferred through the chute set inside the tail trailer 5 and the trailer transfer machine head frame 9 to the transfer machine 10, it is piled up at the bottom of the circular tunnel. The rotary sweeper 19 located below the tail frame 13 of the continuous belt conveyor performs a planar circular motion. The pusher 203 on the front side of the tail frame 13 slides forward along the slide rail on the tail frame 13 under the action of the piston rod 202 of the pushing cylinder, leveling the soil in front. The bottom surface of the material cart 14 is set as a plane. When there is too much crushed soil, the transfer conveyor 10, under the action of the translation cylinder 11, moves backward along the slide rail set inside the tail trailer 5 and the head frame 9 of the trailer transfer conveyor, transferring the slag. The material is transported to the tail section 13 of the continuous belt conveyor, where it is transferred to the material car 14 or the tunnel. Then, the stepping support shoe 142 inside the material car 14 extends and supports the ground to raise the car frame 141. At this time, the stepping support shoe 142 is located at the front of the material car. The piston rod 122 of the drag cylinder retracts, pulling the tail section 13 of the continuous belt conveyor and the material car 14 forward. After the material car 14 completes one step, the stepping support shoe 142 inside the material car 14 returns to its initial position.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A full-face hard rock tunnel boring machine, characterized in that: The tunneling machine includes a frame, a rotary cutter head (1), a screw conveyor (3), and a tail trailer (5). The rotary cutter head (1) is installed at the front end of the frame, the screw conveyor (3) is installed in the middle, and the tail trailer (5) is installed at the rear end. A liquid spraying component (2) is installed below the screw conveyor (3), and a soil differential assembly (4) is installed at the upper discharge port. A trailer transfer machine frame (7) is installed above the tail trailer (5). A crusher and leveler (6) is installed vertically downward in the middle of the trailer transfer machine frame (7). A pressure feedback device (17) is installed vertically at the front of the tail trailer (5), and a trailer baffle plate (18) is installed below the rear of the tail trailer (5). The pressure feedback device (17) feeds back an electrical signal to the soil differential assembly (4). The trailer transfer machine frame (7) is connected to the trailer transfer machine head frame (9) through multiple hinge pins (8). The trailer transfer machine head frame (9) is located above the rear of the tail trailer (5). (9) A rotary sweeper (19) is installed below. The transition transfer machine (10) is installed above and behind the trailer transfer machine frame (7). The tail trailer (5), the trailer transfer machine head frame (9), and the transition transfer machine (10) are all equipped with slide rails. The tail trailer (5) slides in conjunction with the slide rail of the trailer transfer machine head frame (9). The trailer transfer machine head frame (9) slides in conjunction with the slide rail of the transition transfer machine (10). The cylinder of the translation cylinder (11) is installed on the trailer transfer machine. Below the head frame (9), a translation cylinder (11) is installed below the transition transfer machine (10). A drag cylinder connecting seat (123) is provided at the tail end (9) of the trailer transfer machine head frame. The trailer transfer machine head frame (9) is connected to the tail frame (13) of the continuous belt conveyor through the drag cylinder (12). The material cart (14) is placed above the backfill material. Slides are provided on the top and inside of the material cart (14). A stepping support shoe (142) is installed inside the material cart (14). The stepping support shoe (142) slides in cooperation with the horizontal slide inside the material cart (14). The tail frame (13) of the continuous belt conveyor is installed in front of the material cart (14). A rotary sweeping plate (19) is installed below the tail frame (13) of the continuous belt conveyor. A balancing frame (15) is installed above the head frame (9) of the trailer transfer machine. A walking wheel (16) is installed on the balancing frame (15). The walking wheel (16) slides in cooperation with the slide on the top of the material cart (14). A slide is provided on the tail frame (13) of the continuous belt conveyor. A pushing cylinder (20) is installed above the tail frame (13) of the continuous belt conveyor. The pushing cylinder (20) slides in cooperation with the slide on the tail frame (13) of the continuous belt conveyor through the push bucket (203). The liquid spraying component (2) is installed below the screw conveyor (3). The liquid spraying component (2) has an inlet pipe (25) at its center and a rotary switch (21) on its upper side. The transport direction of the inlet pipe (25) is perpendicular to the transport direction of the screw conveyor (3). A reverse osmosis port (22) is installed at the interface between the liquid spraying component (2) and the screw conveyor (3). The reverse osmosis port (22) is connected to the delivery pipe (23). The transport direction of the delivery pipe (23) is perpendicular to the transport direction of multiple delivery sub-pipes (24). The delivery pipe (23) is connected to the multiple delivery sub-pipes (24). The tail trailer (5) has a pressure feedback device (17) vertically installed at the front. A transmission block (171) is installed on the upper part of the pressure feedback device (17). A signal feedback component (172) is installed below the transmission block (171). The transmission block (171) receives an overload pressure signal feedback component (172) and sends a feedback electrical signal. A soil differential assembly (4) is installed above the discharge port at the front end of the screw conveyor (3). A baffle plate (41) is installed inside the soil differential assembly (4). The baffle plate (41) extends in a direction perpendicular to the discharge direction. The pressure feedback device (17) is connected to the soil differential assembly (4) via an electrical signal. When the soil differential assembly (4) receives the feedback electrical signal from the pressure feedback device (17), it controls the baffle plate (41) to descend.

2. The full-face hard rock tunnel boring machine according to claim 1, characterized in that: The fixing frame (42) is welded to the soil differential assembly (4) perpendicular to the discharge direction.

3. The full-face hard rock tunnel boring machine according to claim 1, characterized in that: The pulverizer and leveler (6) is installed vertically downward inside the frame (7) of the trailer transfer machine. A cam (61) is installed on the upper part of the frame (66) of the pulverizer and leveler for transmission. A spring mechanism (63) is installed on the bottom surface of the frame (66). A wheel (62) is installed on the top of the spring mechanism (63). The cam (61) is in vertical contact with the wheel (62). A longitudinal transmission rod (641) is installed vertically inside the spring mechanism (63). The longitudinal transmission rod (641) is vertically connected to the transverse transmission rod (642). The transverse transmission rod (642) is horizontally connected to the pulverizer drill bit (65).

4. A full-face hard rock tunnel boring machine according to claim 1, characterized in that: The trailer transfer machine head frame (9) is equipped with a traction cylinder barrel (121) and a traction cylinder piston rod (122) is installed on the traction cylinder barrel (121). The traction cylinder piston rod (122) is connected to the traction cylinder connecting seat (123), and the traction cylinder connecting seat (123) is installed above the continuous belt conveyor tail frame (13).

5. A full-face hard rock tunnel boring machine according to claim 4, characterized in that: The towing cylinder (121) is welded to the rear of the trailer transfer machine head frame (9), and the towing cylinder connecting seat (123) is welded to the top of the continuous belt conveyor tail frame (13).

6. A full-face hard rock tunnel boring machine according to claim 1, characterized in that: The pusher cylinder (201) is installed above the tail frame (13) of the continuous belt conveyor. The pusher cylinder piston rod (202) is installed inside the pusher cylinder (201). The pusher bucket (203) is installed at the front end of the pusher cylinder piston rod (202).

7. A full-face hard rock tunnel boring machine according to claim 1, characterized in that: The material cart (14) is equipped with a stepping support shoe (142) that can move up and down, and the material cart frame (141) is equipped with the stepping support shoe (142).

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