Tunnel jumbo and construction method thereof

Abstract

A tunnel boring machine (TBM) and its construction method are disclosed, comprising a machine body, a tracked walking mechanism, a cutting assembly, an advanced water exploration drilling assembly, and an auxiliary dust suppression mechanism. The machine body is rotatably mounted on the tracked walking mechanism via a turntable. The cutting assembly is located at the front end of the machine body, and the advanced water exploration drilling assembly is also mounted on the working arm of the cutting assembly. The atomizing nozzle of the auxiliary dust suppression mechanism is positioned facing the working end of the cutting assembly. The tracked walking mechanism is used to move the machine body to the location to be excavated. The advanced water exploration drilling assembly is used to detect the geological conditions around the excavated tunnel. The cutting assembly is used to cut the rock mass at the location to be excavated. The auxiliary dust suppression mechanism works in conjunction with the spray dust suppression component on the cutting assembly to assist in spraying and suppressing dust generated during the excavation process. This invention improves the dust suppression effect and reduces the impact of dust generated during excavation on the construction environment by cooperating with the auxiliary dust suppression mechanism and the spray dust suppression component on the cutting assembly.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine technology, and in particular to a tunnel cantilever tunnel boring machine and its construction method. Background Technology

[0002] Tunnel boring machines (TBMs) excavate tunnels by mechanically breaking rocks, and the broken rock fragments are conveyed out of the TBM through the shovel section and the conveying mechanism inside the machine. Due to their advantages such as safe excavation, minimal disturbance to the rock mass, and fast construction progress, TBMs are widely used in the construction of roadways such as coal mines and tunnels. However, existing cantilever tunnel boring machines have the problem of low functionality.

[0003] To address the above issues, existing technologies employ an advanced water-detection drilling assembly on the tunnel boring machine (TBM) body. This assembly detects surrounding geological conditions before the TBM cuts through the rock, enabling early prediction of complex geological conditions such as groundwater, hard and difficult-to-cut rock strata, and faults, thereby improving the functionality of the tunnel boring machine.

[0004] However, existing tunnel boring machines do not have auxiliary dust control mechanisms. When cutting rock with the cutting assembly, a large amount of dust is generated. The dust suppression effect of the spray dust suppression component on the cutting assembly alone is not ideal. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a tunnel cantilever tunneling machine and its construction method that offers better dust suppression and reduces the impact of dust generated during tunneling on the construction environment.

[0006] To achieve the above objectives, the present invention provides a tunnel boring machine (TBM), comprising a body, a tracked walking mechanism, a cutting assembly, an advanced water-detection drilling assembly, and an auxiliary dust suppression mechanism. The body is rotatably mounted on the tracked walking mechanism via a turntable. The cutting assembly is located at the front end of the body, and the advanced water-detection drilling assembly is also mounted on the working arm of the cutting assembly. The atomizing nozzle of the auxiliary dust suppression mechanism faces the working end of the cutting assembly. The tracked walking mechanism is used to move the body to the location to be excavated. The advanced water-detection drilling assembly is used to detect the geological conditions around the excavated tunnel. The cutting assembly is used to cut the rock mass at the location to be excavated. The auxiliary dust suppression mechanism cooperates with the spray dust suppression component on the cutting assembly to assist in spraying and suppressing dust generated during the excavation process of the cutting assembly.

[0007] In this embodiment, the auxiliary dust suppression mechanism includes a water tank, a water pump, a telescopic arm, and an atomizing nozzle. The water tank and water pump are mounted on the machine body. The telescopic arm is arranged parallel to the working arm of the cutting assembly. One end of the telescopic arm is rotatably mounted on the machine body via a rotating assembly. The other end of the telescopic arm is detachably mounted with an atomizing nozzle via a mounting component. The atomizing nozzle is located on one side of the working end of the cutting assembly. The input end of the water pump is connected to the water tank via a pipeline, and the output end of the water pump is connected to the atomizing nozzle via a telescopic corrugated pipe.

[0008] In this embodiment, the rotating assembly includes a mounting base, a rotating disk, a first servo motor, and an output gear. One end of the mounting base is provided with a flange, and the mounting base is fixed to the side wall of the machine body through the flange. The rotating disk is coaxially rotatably mounted on the other side of the mounting base. A gear ring is fixed on the inner wall of the rotating disk. The first servo motor is fixed inside the mounting base. An output gear is fixed on the output end of the first servo motor. The output gear meshes with the gear ring. The telescopic arm is fixed on the rotating disk.

[0009] In this embodiment, the telescopic arm includes a support arm and an extension arm. Both the extension arm and the support arm are hollow structures. The extension arm is slidably inserted into the support arm, and the support arm is fixed on the rotating disk. The atomizing nozzle is installed on the extension arm. A second servo motor is fixed inside the support arm. A threaded rod is coaxially fixed on the output end of the second servo motor. The threaded rod is arranged along the telescopic direction of the telescopic arm. A slider is threadedly connected to the threaded rod, and the slider is fixedly connected to the extension arm.

[0010] In this embodiment, heat dissipation holes are respectively provided on the mounting base and support arm at positions corresponding to the first servo motor and the second servo motor. Heat dissipation plates are installed on the heat dissipation holes, and multiple heat dissipation grooves are provided through the heat dissipation plates.

[0011] In this embodiment, the heat sink is provided with parallel sliding grooves on both sides of its outer side, and an insertion area for installing a filter screen is formed between the two sliding grooves. The insertion area covers the entire heat sink, and a filter screen is inserted into the insertion area 203.

[0012] A construction method using the aforementioned tunnel boring machine specifically includes the following steps:

[0013] S1. Use the tracked walking mechanism to move the machine body to the location to be excavated. First, use the advanced water exploration drilling rig assembly to explore the geological conditions around the excavation tunnel to confirm that there is no risk of water inrush or seepage at the location to be excavated.

[0014] S2. Use the cutting assembly to cut the rock mass at the excavation site;

[0015] S3. While cutting the rock mass using the cutting assembly, start the rotating component to drive the telescopic arm to rotate, adjust the rotation angle of the telescopic arm, and control the length of the telescopic arm. After the atomizing nozzle is placed on the side of the working end of the cutting assembly, start the water pump to deliver water from the water tank to the atomizing nozzle to form water mist, thereby spraying to suppress dust.

[0016] The present invention has the following advantages:

[0017] 1. The auxiliary dust suppression mechanism of this device works in conjunction with the spray dust suppression component of the cutting assembly. The auxiliary dust suppression mechanism includes a water tank, a water pump, a telescopic arm, and a spray head. The position of the spray head can be flexibly adjusted, and the rotating component can precisely adjust the rotation angle of the telescopic arm. The telescopic arm can change the extension distance of the spray head, so that the spray head is aligned with the cutting end, effectively improving the dust suppression effect and reducing dust pollution to the construction environment.

[0018] 2. The rotating assembly uses a motor, gears, and gear rings to provide both driving and deceleration functions, ensuring that the telescopic arm rotates at a suitable speed and the angle is precisely adjusted to meet the needs of different working conditions. The telescopic arm consists of a support arm and an extension arm. The motor drives the threaded rod to move the slider, enabling the extension arm to extend and retract smoothly. The limit block prevents the slider from falling off, ensuring the structural safety and reliability.

[0019] 3. The mounting base and support arm are equipped with heat dissipation holes and heat dissipation plates. The heat dissipation grooves of the heat dissipation plate achieve heat dissipation. At the same time, the heat dissipation plate is equipped with a filter to filter dust in the air, prevent dust from entering the interior, and extend the service life of components such as motors.

[0020] 4. This construction method has clear steps: first, the geology is explored, then the stone is cut, excavated and transported, and dust suppression is carried out at the same time. All links are closely coordinated to improve construction efficiency and safety.

[0021] In summary, by incorporating an auxiliary dust suppression mechanism that works in conjunction with the spray dust suppression component on the cutting assembly, this invention enhances the dust suppression effect of the tunnel cantilever machine, thereby reducing the impact of dust generated during the tunneling process on the construction environment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] Figure 2 This is the present invention. Figure 1 Enlarged view of point A.

[0024] Figure 3 This is a schematic diagram of the rotating component of the present invention.

[0025] Figure 4 This is an exploded view of the telescopic arm of the present invention.

[0026] Figure 5This is a schematic diagram of the telescopic arm of the present invention.

[0027] Figure 6 This is the present invention. Figure 5 Enlarged view at point B.

[0028] In the attached diagram, 101 is the machine body; 102 is the tracked walking mechanism; 103 is the cutting assembly; 104 is the shovel assembly; 105 is the advanced water exploration drilling rig assembly; 106 is the water tank; 107 is the water pump; 108 is the mounting base; 109 is the rotating disk; 110 is the support arm; 111 is the extension arm; 112 is the mounting component; 113 is the atomizing nozzle; 114 is the telescopic corrugated pipe; 115 is the first servo motor; 116 is the output gear; 117 is the second servo motor; 118 is the threaded rod; 119 is the slider; 120 is the gear ring; 121 is the limit block; 122 is the flange; 201 is the heat sink; 202 is the heat sink groove; 203 is the insertion area; and 204 is the filter screen. Detailed Implementation

[0029] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0031] like Figures 1 to 4As shown, a tunnel boring machine (TBM) includes a body 101, a tracked walking mechanism 102, a cutting assembly 103, a shovel assembly 104, an advanced water-exploration drilling rig assembly 105, and an auxiliary dust suppression mechanism. The body 101 is rotatably mounted on the tracked walking mechanism 102 via a turntable. The cutting assembly 103 is located at the front end of the body 101, and the shovel assembly 104 is also located at the front end of the body 101, positioned below the cutting assembly 103. The advanced water-exploration drilling rig assembly 105 is also mounted on the working arm of the cutting assembly 103. The tracked walking mechanism 102 is used to... The body 101 moves to the location to be excavated; the movement of the working arm of the cutting assembly 103 drives the advanced water exploration drilling rig assembly 105 to move, thereby detecting the geological conditions around the excavated tunnel and realizing the prediction of complex geological conditions such as groundwater, hard and difficult-to-cut rock strata, and faults; the cutting assembly 103 is used to cut the rock mass at the location to be excavated; the auxiliary dust suppression mechanism cooperates with the spray dust suppression component on the cutting assembly 103 to assist in spraying and suppressing the dust generated by the cutting assembly 103 during the excavation process; the shovel assembly 104 and the crushed stone conveying mechanism cooperate to transport the crushed stone generated during the excavation process to the outside of the tunneling machine;

[0032] The walking mechanism 102, cutting assembly 103, shovel plate assembly 104, advanced water exploration drilling rig assembly 105, and shovel plate assembly 104 and crushed stone conveying mechanism are all existing mature products, and their structures and principles will not be described in detail in this application.

[0033] The aforementioned solution addresses the problem that existing tunnel boring machines generate significant dust when cutting rock using the cutting assembly 103, and that the dust suppression effect of the spray dust suppression components on the cutting assembly 103 alone is insufficient.

[0034] like Figure 1 , Figure 2As shown, the auxiliary dust suppression mechanism further includes a water tank 106, a water pump 107, a telescopic arm, and an atomizing nozzle 113. The water tank 106 and the water pump 107 are mounted on the machine body 101. The telescopic arm is arranged parallel to the working arm of the cutting assembly 103. One end of the telescopic arm is rotatably mounted on the machine body 101 via a rotating assembly. The atomizing nozzle 113 is detachably mounted on the other end of the telescopic arm via a mounting piece 112. The atomizing nozzle 113 is located on one side of the working end of the cutting assembly 103. Driven by the drive mechanism, the telescopic arm can rotate around the pivot along a vertical plane. The input end of the water pump 107 is connected to the water tank 106 via a pipeline, and the output end of the water pump 107 is connected via a telescopic corrugated pipe 11. 4. Connected to the atomizing nozzle 113, when the cutting assembly 103 is used to cut the rock mass, the rotating component is activated to drive the telescopic arm to rotate, thereby adjusting the rotation angle of the telescopic arm and controlling the length of the telescopic arm. After the atomizing nozzle 113 is aligned with the working end of the cutting assembly 103, the water pump 107 is activated, and water in the water tank 106 is transported to the atomizing nozzle 113 through the telescopic corrugated pipe 114 to form water mist, thereby spraying to suppress dust. With the above structure, through the setting of the auxiliary dust suppression mechanism, in conjunction with the spray dust suppression component on the cutting assembly 103, the dust suppression effect of the tunnel cantilever tunneling machine is better, thereby reducing the impact of dust generated during the tunneling process on the construction environment.

[0035] like Figure 3 As shown, the rotating assembly further includes a mounting base 108, a rotating disk 109, a first servo motor 115, and an output gear 116. One end of the mounting base 108 is provided with a flange 122, and the mounting base 108 is fixed to the side wall of the body 101 via the flange 122. The rotating disk 109 is coaxially rotatably mounted on the other side of the mounting base 108. A gear ring 120 is fixed on the inner wall of the rotating disk 109. The first servo motor 115 is fixed inside the mounting base 108, and the output gear 116 is fixed on the output end of the first servo motor 115. The output gear 116 meshes with the gear ring 120, and the telescopic arm is fixed on the rotating disk 109. The first servo motor 115 is started, which drives the output gear 116 to rotate. Since the output gear 116 meshes with the gear ring 120, it drives the rotating disk 109 to rotate on the mounting base 108. At the same time, since the number of teeth of the output gear 116 is less than the number of teeth of the gear ring 120, the rotating component is also a kind of speed reducer, thereby reducing the rotation speed of the telescopic arm and ensuring that the adjustment of the rotation angle of the support arm 110 is more accurate.

[0036] like Figure 4 , Figure 5As shown, the telescopic arm includes a support arm 110 and an extension arm 111. Both the extension arm 111 and the support arm 110 are hollow structures. The extension arm 111 is slidably inserted into the support arm 110. The support arm 110 is fixed on the rotating disk 109. The atomizing nozzle 113 is mounted on the extension arm 111. A second servo motor 117 is fixed inside the support arm 110. A threaded rod 118 is coaxially fixed to the output end of the second servo motor 117. The threaded rod 118 is arranged along the telescopic direction of the telescopic arm. A slider 119 is threadedly connected to the threaded rod 118, and the slider 119 is fixedly connected to the extension arm 111. When the second servo motor 117 is started, the threaded rod 118 is driven to rotate. Since the slider 119 is connected to the extension arm 111, the extension arm 111 is driven to slide along the support arm 110. A limit block 121 is fixed on the end of the threaded rod 118. The limit block 121 is set to prevent the slider 119 from falling off the threaded rod 118.

[0037] like Figure 5 , Figure 6 As shown, furthermore, the mounting base 108 and the support arm 110 are respectively provided with heat dissipation holes at positions corresponding to the first servo motor 115 and the second servo motor 117. A heat dissipation plate 201 is installed on the heat dissipation holes, and multiple heat dissipation grooves 202 are provided through the heat dissipation plate 201 to achieve heat dissipation. The heat dissipation plate 201 has parallel sliding grooves on both sides of its outer side, and an insertion area 203 for installing a filter screen 204 is formed between the two sliding grooves. The insertion area 203 covers the entire heat dissipation plate 201, and the filter screen 204 is inserted into the insertion area 203. The filter screen 204 can filter dust in the air and prevent excessive dust from entering the interior of the mounting base 108 and the support arm 110 through the heat dissipation grooves 202.

[0038] Using the above structure, the specific implementation process of this device is as follows:

[0039] After the tracked walking mechanism 102 moves the machine body 101 to the location to be excavated, the advanced water-detecting drilling rig assembly 105 is used to detect the geological conditions around the tunnel to be excavated, so as to predict complex geological conditions such as groundwater, hard and difficult-to-cut rock strata, and faults in advance. Then, the cutting assembly 103 is used to cut the rock mass at the location to be excavated. The crushed stone generated during the excavation process is transported to the outside of the tunneling machine through the cooperation of the shovel assembly 104 and the conveying mechanism set on the machine body 101, thereby completing the excavation of the tunnel. When the cutting assembly 103 is used to cut the rock mass, the rotating component is activated, which drives the rotating disk 109 to rotate on the end face of the mounting base 108. This adjusts the rotation angle of the support arm 110 and activates the telescopic arm, causing the extension arm 111 to slide inside the support arm 110. After the atomizing nozzle 113 aligns with the output end of the cutting assembly 103, the water pump 107 is activated, and water from the water tank 106 is transported to the atomizing nozzle 113 through the telescopic corrugated pipe 114 to form a water mist for dust suppression. With the above structure, and through the auxiliary dust suppression mechanism, in conjunction with the dust suppression spray assembly on the cutting assembly 103, the dust suppression effect of the tunnel cantilever machine is improved, thereby reducing the impact of dust generated during the tunneling process on the construction environment.

[0040] This invention also includes a construction method for a tunnel boring machine (TBM), applied to the tunnel boring machine described above, comprising the following steps:

[0041] S1. After moving the machine body to the location to be excavated using the tracked walking mechanism, the advanced water exploration drilling rig assembly is used to explore the geological conditions around the excavated tunnel.

[0042] S2. Use the cutting assembly to cut the rock mass at the excavation site;

[0043] S3. While cutting the rock mass using the cutting assembly, start the rotating component to drive the telescopic arm to rotate, adjust the rotation angle of the telescopic arm, and control the length of the telescopic arm. After the atomizing nozzle is placed on the side of the working end of the cutting assembly, start the water pump to deliver water from the water tank to the atomizing nozzle to form water mist, thereby spraying to suppress dust.

[0044] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A tunnel boring machine with cantilever mechanism, characterized in that: The system includes a body, a tracked walking mechanism, a cutting assembly, an advanced water-exploration drilling rig assembly, and an auxiliary dust suppression mechanism. The body is rotatably mounted on the tracked walking mechanism via a turntable. The cutting assembly is located at the front end of the body, and the advanced water-exploration drilling rig assembly is also mounted on the working arm of the cutting assembly. The atomizing nozzle of the auxiliary dust suppression mechanism faces the working end of the cutting assembly. The tracked walking mechanism is used to move the body to the location to be excavated. The advanced water-exploration drilling rig assembly is used to detect the geological conditions around the excavated tunnel. The cutting assembly is used to cut the rock mass at the location to be excavated. The auxiliary dust suppression mechanism works in conjunction with the spray dust suppression component on the cutting assembly to assist in spraying and suppressing dust generated during the excavation process of the cutting assembly.

2. The tunnel boring machine according to claim 1, characterized in that: The auxiliary dust suppression mechanism includes a water tank, a water pump, a telescopic arm, and an atomizing nozzle. The water tank and water pump are mounted on the machine body. The telescopic arm is arranged parallel to the working arm of the cutting assembly. One end of the telescopic arm is rotatably mounted on the machine body via a rotating assembly. The other end of the telescopic arm is detachably mounted with an atomizing nozzle via a mounting component. The atomizing nozzle is located on one side of the working end of the cutting assembly. The input end of the water pump is connected to the water tank via a pipeline, and the output end of the water pump is connected to the atomizing nozzle via a telescopic corrugated pipe.

3. The tunnel boring machine according to claim 2, characterized in that: The rotating assembly includes a mounting base, a rotating disk, a first servo motor, and an output gear. One end of the mounting base is provided with a flange, and the mounting base is fixed to the side wall of the machine body through the flange. The rotating disk is coaxially rotatably assembled on the other side of the mounting base. A gear ring is fixed on the inner wall of the rotating disk. The first servo motor is fixed inside the mounting base. An output gear is fixed on the output end of the first servo motor. The output gear meshes with the gear ring. The telescopic arm is fixed on the rotating disk.

4. The tunnel boring machine according to claim 3, characterized in that: The telescopic arm includes a support arm and an extension arm, both of which are hollow. The extension arm is slidably inserted into the support arm, and the support arm is fixed on a rotating disk. The atomizing nozzle is mounted on the extension arm. A second servo motor is fixed inside the support arm, and a threaded rod is coaxially fixed to the output end of the second servo motor. The threaded rod is arranged along the telescopic direction of the telescopic arm, and a slider is threadedly connected to the threaded rod. The slider is fixedly connected to the extension arm.

5. The tunnel boring machine according to claim 4, characterized in that: The mounting base and support arm are respectively provided with heat dissipation holes at positions corresponding to the first servo motor and the second servo motor. Heat dissipation plates are installed on the heat dissipation holes, and multiple heat dissipation slots are provided through the heat dissipation plates.

6. The tunnel boring machine according to claim 5, characterized in that: The heat sink has parallel grooves on both sides of its outer side, and an insertion area for installing a filter is formed between the two grooves. The insertion area covers the entire heat sink, and a filter is inserted into the insertion area 203.

7. A construction method using the tunnel boring machine as described in claim 6, characterized in that: Specifically, the steps include the following: S1. Use the tracked walking mechanism to move the machine body to the location to be excavated. First, use the advanced water exploration drilling rig assembly to explore the geological conditions around the excavation tunnel to confirm that there is no risk of water inrush or seepage at the location to be excavated. S2. Use the cutting assembly to cut the rock mass at the excavation site; S3. While cutting the rock mass using the cutting assembly, start the rotating component to drive the telescopic arm to rotate, adjust the rotation angle of the telescopic arm, and control the length of the telescopic arm. After the atomizing nozzle is placed on the side of the working end of the cutting assembly, start the water pump to deliver water from the water tank to the atomizing nozzle to form water mist, thereby spraying to suppress dust.

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