A shield tunnel muck removal device

Abstract

This invention relates to the field of shield tunnel equipment technology, specifically to a shield tunnel muck removal device. It includes a muck conveying component assembly on one side of the shaft body, used to transport muck from the bottom of the shaft body to the outside. The muck conveying component assembly includes a drive base assembly, a height control assembly, a conveying chain assembly, an in-shaft stabilization assembly, and a chain bucket assembly. Through the overall structure, this chain bucket muck conveying device can adaptively adjust to different shaft body depths. It eliminates the need for customizing and modifying the conveying height of the chain bucket conveyor for each shaft of varying depth. By controlling the position of the moving frame, the height of the chain bucket conveyor can be adapted to the shaft body depth, reducing working time and costs.

Description

Technical Field

[0001] This invention relates to the field of shield tunnel equipment technology, specifically to a shield tunnel muck removal device. Background Technology

[0002] A tunnel boring machine (TBM) is a piece of equipment used for tunnel excavation. It is widely used in urban subways, traffic tunnels, water conservancy projects, and pipeline construction. During TBM excavation, the excavated soil is transported to the shaft through an internal conveying structure. Then, the excavated soil is transported out through a chain bucket muck discharge device installed in the shaft. In the chain bucket muck discharge device, a motor drives a chain to move the conveying bucket, transporting the excavated soil from the lower end to the higher end. After the bucket dumps the excavated soil, it continues to circulate. This device can continuously transport the excavated soil and deliver it to the surface.

[0003] Existing chain bucket tunnel muck removal devices have the following problems: they cannot autonomously adjust their structural height to adapt to shafts of different depths. This necessitates tedious redesign and modification of the device each time a shaft of varying depth is encountered. This customization not only increases costs and time but also leads to project delays and additional expenses due to the need for downtime maintenance. Furthermore, the redesign of the device may require additional engineering design and adjustments due to changes in shaft depth, increasing the complexity and uncertainty of the entire project. In addition, existing chain bucket muck removal devices are inefficient in handling soil and slag, leaving residues. This reduces the cleaning effect of the muck removal device, increasing the difficulty of cleaning and potentially leading to a decline in equipment performance and operating efficiency. Therefore, besides the issue of shaft depth adjustment, improving the cleaning efficiency of the muck removal device is also a pressing technical challenge that needs to be addressed. Summary of the Invention

[0004] In order to overcome the above-mentioned technical problems, the purpose of this invention is to provide a shield tunnel muck removal device to solve the problem mentioned in the background art that the current shield tunnel muck removal devices cannot adapt to the depth of the shaft.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a shield tunnel muck removal device, comprising a vertical shaft body, wherein a muck conveying component assembly is provided on one side of the vertical shaft body, the muck conveying component assembly being used to convey the muck at the bottom of the vertical shaft body to the outside, the muck conveying component assembly comprising a drive base assembly, a height control assembly, a conveying chain assembly, an in-shaft stabilization assembly, and a chain bucket assembly, the drive base assembly being used to drive the operation of the conveying chain assembly, the drive base assembly comprising a reinforced concrete base, a bottom steel plate seat being provided on the top of the reinforced concrete base, and a main drive being provided on the top of the bottom steel plate seat. The motor has an inclined frame on one side of the bottom steel plate base, and an inner vertical frame on the side of the inclined frame. The height control component is used to adjust the depth of the shaft body. The height control component includes a control drive motor, a load-bearing screw on one side of the control drive motor, a guide frame outside the load-bearing screw, a movable frame inside the guide frame, and a control component base frame at one end of the guide frame. The conveyor chain assembly is used to drive the bucket chain assembly for conveying. The conveyor chain assembly includes a drive guide assembly, which includes a drive sprocket and a main guide sprocket. A height-adjusting sprocket is provided above the drive guide assembly. A front guide sprocket is provided on one side of the height-adjusting sprocket. A lower guide sprocket is provided on top of the front guide sprocket. A rear guide sprocket is provided above the lower guide sprocket, and a chain body is engaged with the rear guide sprocket. The well-entry stabilization assembly is used to provide auxiliary support for the conveying chain assembly structure within the vertical shaft body. The well-entry stabilization assembly includes a buffer soil and slag frame, which is used to temporarily store the slag to be conveyed. A horizontal stabilization assembly is provided on one side of the buffer soil and slag frame. The horizontal stabilization assembly includes a horizontal stabilizing frame. The conveyor chain assembly is equipped with an in-well guide sprocket, and an in-well adjustable sprocket is provided on one side of the in-well guide sprocket. A sprocket fixing component is provided on one side of the adjustable sprocket. A chain bucket assembly is provided outside the conveyor chain assembly. The chain bucket assembly is used for loading and unloading slag. The chain bucket assembly includes an outer bucket shell, an inner bucket shell is provided at the bottom of the outer bucket shell, a rear cross arm is provided on the side of the outer bucket shell, a buckle tooth is provided on one side of the outer bucket shell, a buckle plate is provided on one side of the buckle tooth, an adjusting plate is provided on the side of the buckle plate, a pull plate is provided on one side of the adjusting plate, and an external mounting frame is provided outside the pull plate.

[0006] Preferably, the reinforced concrete base is connected to the shaft body via a groove, the bottom steel plate base is fixed to the reinforced concrete base with expansion bolts, the main drive motor is connected to the top of the bottom steel plate base via a mounting bracket, the inclined frame is connected to the bottom steel plate base, and the inner vertical frame is connected to the top of the bottom steel plate base.

[0007] Preferably: the control drive motor is connected to the top of the guide frame via a mounting bracket, the control drive motor is connected to the load-bearing screw via a synchronous belt drive, the load-bearing screw is externally connected to a sleeve, and the sleeve and the guide frame are connected via bearings, one end of the guide frame is connected to the control component base frame, one end of the control component base frame is connected to the bottom steel plate seat, the control component base frame is connected to the load-bearing screw via bearings, the movable frame slides in contact with the guide frame via a sliding groove, and the movable frame is connected to the load-bearing screw via a nut pair.

[0008] Preferably, the chain body is provided with three sprockets, and there are three drive sprockets, three height adjustment sprockets, three front guide sprockets, and three lower guide sprockets. The drive sprockets, three height adjustment sprockets, three front guide sprockets, and three lower guide sprockets have the same structure. There are two rear guide sprockets and two main guide sprockets. The two rear guide sprockets and the main guide sprockets mesh with the chain bodies on both sides. The drive sprockets, three height adjustment sprockets, three front guide sprockets, and three lower guide sprockets mesh with the chain body.

[0009] Preferably, the drive sprocket is connected to the inner vertical frame via a rotating shaft, the main guide sprocket is connected to the inner vertical frame via a rotating shaft, the front guide sprocket and the rear guide sprocket are connected to the inclined frame via a rotating shaft, the height adjustment sprocket is connected to the moving frame via a rotating shaft, and the working end of the main drive motor drives the drive sprocket via a synchronous belt drive.

[0010] Preferably, the lower guide sprocket is connected to the buffer soil frame via a rotating shaft. The buffer soil frame is located at the bottom of the shaft body. Multiple sets of horizontal stabilizing components are provided, and the number of these components increases or decreases depending on the extent to which the conveyor chain components are located inside the shaft body. Adjacent horizontal stabilizing components are connected by construction scaffolding plates.

[0011] Preferably: the horizontal stabilizer is connected to the side wall of the shaft body by expansion bolts; the guide sprocket inside the shaft is provided with two sets of sprockets, and the chain body between the guide sprocket and the lower guide sprocket before the two sets of sprockets mesh; the guide sprocket inside the shaft is connected to the horizontal stabilizer via a rotating shaft; the adjustable sprocket inside the shaft and the sprocket fixing component are connected via the rotating shaft; the horizontal stabilizer is provided with a sliding groove at the position corresponding to the sprocket fixing component; the sprocket fixing component is fixed to the horizontal stabilizer by bolts; the chain body between the guide sprocket and the lower guide sprocket after the adjustable sprocket inside the shaft meshes.

[0012] Preferably: the bottom of the outer bucket shell is connected to the inner bucket shell via a pivot; the rear crossarm is connected to the back of the outer bucket shell; the rear crossarm is connected to the chain body; a tension spring connects the inner bucket shell and the outer bucket shell; the buckle tooth is connected to the outer bucket shell; the buckle tooth engages with the buckle plate; the buckle plate is connected to the inner bucket shell via a pivot; and an adjusting plate is connected to the pivot of the buckle plate; the adjusting plate is disengaged from the pulling plate; the pulling plate is connected to the outer mounting frame; the outer mounting frame is connected to the bottom steel plate seat; and a tension spring connects the buckle plate and the inner bucket shell.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This shield tunnel muck removal device is equipped with a muck conveying component assembly. Existing chain bucket muck conveying devices cannot independently adjust their structural height to adapt to shafts of different depths. This necessitates tedious customization and modification of the device each time a shaft of varying depth is encountered. This customization work not only increases costs and time but also leads to project delays and additional expenses, as it requires downtime for maintenance. Furthermore, due to changes in shaft depth, the re-customization of the device may require additional engineering design and adjustments, increasing the complexity and uncertainty of the entire project. In the corresponding muck conveying component assembly design, in actual use, the muck excavated by the shield machine is directly conveyed to the muck buffer box. Subsequently, the main drive motor is started, and the main drive motor drives the drive sprocket to rotate via a synchronous transmission belt connected to the working end. The rotation of the drive sprocket drives the three chain bodies to run. Figure 5 and Figure 6As shown, when the chain is running, it drives the outer and inner bucket shells of the chain bucket assembly to dig up the soil and debris in the buffer soil and debris frame. Some of the soil and debris will enter the outer and inner bucket shells. As the chain moves, the outer and inner bucket shells containing soil and debris will pass through the horizontal stabilizing component, the control component base frame, and the main guide sprocket, and then dump the soil and debris inside. After dumping, the chain moves to perform cyclic operations. When facing vertical shafts of different depths, the control drive motor is controlled to drive the load-bearing screw to rotate. Different rotation directions of the load-bearing screw can control the position of the moving frame to move up and down in the guide frame. The movement of the moving frame will drive the height adjustment sprocket to adjust the height position. Simultaneously, changes occur. When the height of the height-adjusting sprocket changes, the depth of the buffer soil and slag frame within the shaft body can be adjusted accordingly. When the shaft is shallower, the moving frame and height-adjusting sprocket are raised, thereby raising the position of the buffer soil and slag frame to adapt to the depth of the shaft body. When the shaft body is deeper, the moving frame and height-adjusting sprocket are lowered, causing the buffer soil and slag frame to descend and contact the bottom of the shaft body. Through the action of this overall structure, this chain bucket slag conveying device can adaptively adjust to different shaft body depths, eliminating the need for customization and modification each time it is used with shaft bodies of different depths, thus reducing working time and costs.

[0015] 2. This shield tunnel muck removal device is equipped with a muck conveying component assembly. Existing chain bucket muck removal devices are inefficient at handling muck, leaving residue. This reduces the cleaning effect of the muck removal device. Residual muck not only increases the difficulty of cleaning but may also lead to a decrease in equipment performance and operating efficiency. Therefore, in addition to the issue of shaft depth adjustment, improving the cleaning efficiency of the muck removal device is a pressing technical problem. Correspondingly, in the designed muck conveying component assembly, the chain bucket assembly, when the muck loaded in the outer and inner bucket shells moves to the position of the pulling plate, ... Figure 12 and Figure 14In its current structural state, the pull plate will contact the adjusting plate. As the outer and inner hopper shells continue to move, the pull plate pulls the adjusting plate to rotate. The movement of the adjusting plate will cause the latching plate to disengage from the latching teeth. At this time, due to the gravity of the soil inside, the inner hopper shell will rotate and open through the pivot into the outer hopper shell. After opening, the soil inside will be discharged. At this time, the tension spring between the outer and inner hopper shells will extend. After the soil inside is discharged, the tension spring will release its stored force, pulling the inner hopper shell back to its original position. At this time, the latching teeth will push the latching plate open, and the tension spring between the latching plate and the inner hopper shell will extend again. The latching plate will then re-engage with the latching teeth to ensure the outer hopper... The outer and inner bucket shells are locked in place. After the buckle plate and buckle teeth engage, the tension spring between the buckle plate and the inner bucket shell releases its stored force, increasing the engagement strength between the buckle plate and buckle teeth and ensuring the stability of the locking position between the outer and inner bucket shells. The tension of the tension spring between the buckle plate and the inner bucket shell is less than that between the inner and outer bucket shells. This chain bucket assembly design allows the soil and slag inside to fall efficiently from the gap between the inner and outer bucket shells after the inner bucket shell is opened. Compared with the current technology of direct dumping, it can complete the dumping efficiently and quickly, and the dumping is cleaner, reducing the amount of soil and slag residue and improving the practicality of the overall chain bucket conveyor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall back structure of the present invention;

[0018] Figure 3 This is a schematic diagram of the overall two-dimensional structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the soil and slag conveying component assembly of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the conveyor chain assembly and the in-well stabilization assembly of the present invention;

[0021] Figure 6 This is a two-dimensional structural schematic diagram of the conveyor chain assembly and the in-well stabilization assembly of the present invention;

[0022] Figure 7 This is a schematic diagram of the drive base assembly and the high / low control assembly of the present invention;

[0023] Figure 8 This is a schematic diagram of the back structure of the drive base assembly and the height control assembly of the present invention;

[0024] Figure 9This is a schematic diagram of the structure of the drive base assembly of the present invention;

[0025] Figure 10 This is a side view of the soil and slag conveying component assembly of the present invention.

[0026] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at point A;

[0027] Figure 12 This is a schematic diagram of the chain bucket assembly of the present invention;

[0028] Figure 13 For the present invention Figure 12 Schematic diagram of the structure at point B;

[0029] Figure 14 This is a schematic diagram of the bottom structure of the chain bucket assembly of the present invention;

[0030] Figure 15 This is a top view of the installation position of the soil and slag conveying component assembly of the present invention on the main body of the shaft.

[0031] In the diagram: 100, Shaft main body; 200, Soil and slag conveying component assembly; 21, Drive base assembly; 211, Reinforced concrete base; 212, Bottom steel plate base; 213, Main drive motor; 214, Inclined truss; 215, Inner vertical frame; 22, Height control assembly; 221, Control drive motor; 222, Load-bearing screw; 223, Guide frame; 224, Moving frame; 225, Control assembly base frame; 23, Conveyor chain assembly; 231, Drive guide assembly; 2311, Drive sprocket; 2312, Main guide sprocket; 232, Height adjustment... 233. Front guide sprocket; 234. Lower guide sprocket; 235. Rear guide sprocket; 236. Chain body; 24. In-well stabilization assembly; 241. Buffer soil frame; 242. Lateral stabilization assembly; 2421. Lateral stabilization frame; 2422. In-well guide sprocket; 2423. In-well adjustable sprocket; 2424. Sprocket fixing component; 25. Chain bucket assembly; 251. Outer bucket shell; 252. Inner bucket shell; 253. Rear crossarm; 254. Bucket tooth; 255. Bucket plate component; 256. Adjusting plate; 257. Pull plate component; 258. External mounting frame. Detailed Implementation

[0032] Please see Figure 1-15An embodiment of the present invention provides a muck removal device for a shield tunnel, comprising a shaft body 100, a muck conveying component assembly 200 disposed on one side of the shaft body 100, the muck conveying component assembly 200 being used to convey the muck at the bottom of the shaft body 100 to the outside, the muck conveying component assembly 200 including a drive base assembly 21, a height control assembly 22, a conveying chain assembly 23, an in-shaft stabilization assembly 24, and a chain bucket assembly 25, the drive base assembly 21 being used to drive the operation of the conveying chain assembly 23, the drive base assembly 21 including a reinforced concrete base 211, a bottom steel plate seat 212 disposed on the top of the reinforced concrete base 211, a main drive motor 213 disposed on the top of the bottom steel plate seat 212, and a bottom steel plate seat 212 being disposed on one side of the bottom steel plate seat 212. A sloping truss 214 is provided on the side, and an inner vertical frame 215 is provided on the side of the sloping truss 214; a height control component 22 is used to adapt and adjust the depth of the shaft body 100. The height control component 22 includes a control drive motor 221, a load-bearing screw 222 is provided on one side of the control drive motor 221, a guide frame 223 is provided outside the load-bearing screw 222, a movable frame 224 is provided inside the guide frame 223, and a control component base frame 225 is provided at one end of the guide frame 223; a conveyor chain assembly 23 is used to drive the chain bucket assembly 25 for conveying. The conveyor chain assembly 23 includes a drive guide component 231, which includes a drive sprocket 2311 and a main guide sprocket 2312. A height-adjusting sprocket 232 is installed above the shaft, a front guide sprocket 233 is installed on one side of the height-adjusting sprocket 232, a lower guide sprocket 234 is installed on top of the front guide sprocket 233, and a control component base frame 225 is installed above the lower guide sprocket 234. The control component base frame 225 is engaged with a chain body 236. The shaft stabilization component 24 is used to provide auxiliary support for the conveying chain component 23 structure inside the shaft body 100. The shaft stabilization component 24 includes a buffer soil frame 241, which is used to temporarily store the soil to be conveyed. A horizontal stabilization component 242 is installed on one side of the buffer soil frame 241. The horizontal stabilization component 242 includes a horizontal stabilizing frame 2421, and a shaft guide chain is installed on the side of the horizontal stabilizing frame 2421. The conveyor chain assembly 23 is equipped with a chain bucket assembly 25 on the outside of the conveyor chain assembly 23. The chain bucket assembly 25 is used for loading and unloading slag. The chain bucket assembly 25 includes an outer bucket shell 251, an inner bucket shell 252 at the bottom of the outer bucket shell 251, a rear cross arm 253 on the side of the outer bucket shell 251, a buckle tooth 254 on one side of the outer bucket shell 251, a buckle plate 255 on one side of the buckle tooth 254, an adjusting plate 256 on the side of the buckle plate 255, a pull plate 257 on one side of the adjusting plate 256, and an external mounting bracket 258 on the outside of the pull plate 257.

[0033] The reinforced concrete base 211 is connected to the shaft body 100 via a groove. The bottom steel plate base 212 is fixed to the reinforced concrete base 211 via expansion bolts. The main drive motor 213 is connected to the top of the bottom steel plate base 212 via a mounting bracket. The inclined frame 214 is connected to the bottom steel plate base 212. The inner vertical frame 215 is connected to the top of the bottom steel plate base 212.

[0034] The control drive motor 221 is connected to the top of the guide frame 223 via a mounting bracket. The control drive motor 221 is connected to the load-bearing screw 222 via a synchronous belt drive. The load-bearing screw 222 is externally connected to a sleeve, and the sleeve and the guide frame 223 are connected via bearings. One end of the guide frame 223 is connected to the control component base frame 225, and one end of the control component base frame 225 is connected to the bottom steel plate seat 212. The control component base frame 225 is connected to the load-bearing screw 222 via bearings. The moving frame 224 slides in contact with the guide frame 223 via a slide groove, and the moving frame 224 is connected to the load-bearing screw 222 via a nut pair.

[0035] The chain body 236 has three parts: a drive sprocket 2311, a height adjustment sprocket 232, a front guide sprocket 233, and a lower guide sprocket 234. The drive sprocket 2311, the height adjustment sprocket 232, the front guide sprocket 233, and the lower guide sprocket 234 have the same structure. The control component base 225 and the main guide sprocket 2312 each have two parts. The two control component bases 225 and the main guide sprockets 2312 mesh with the chain bodies 236 on both sides. The drive sprocket 2311, the height adjustment sprocket 232, the front guide sprocket 233, and the lower guide sprocket 234 mesh with the chain body 236.

[0036] The drive sprocket 2311 is connected to the inner vertical frame 215 via a rotating shaft. The main guide sprocket 2312 is connected to the inner vertical frame 215 via a rotating shaft. The front guide sprocket 233 and the control component base frame 225 are connected to the inclined frame 214 via a rotating shaft. The height adjustment sprocket 232 is connected to the moving frame 224 via a rotating shaft. The working end of the main drive motor 213 drives the drive sprocket 2311 via a synchronous belt drive.

[0037] The lower guide sprocket 234 is connected to the buffer soil frame 241 via a rotating shaft. The buffer soil frame 241 is located at the bottom of the shaft body 100. Multiple sets of horizontal stabilizing components 242 are provided, and the number of multiple sets of horizontal stabilizing components 242 increases or decreases depending on the extent of the conveyor chain component 23 inside the shaft body 100. Adjacent horizontal stabilizing components 242 are connected by construction scaffolding plates.

[0038] The horizontal stabilizer 2421 is connected to the side wall of the shaft body 100 via expansion bolts. The guide sprocket 2422 inside the shaft has two sets of sprockets, and the chain body 236 between the guide sprocket 233 and the lower guide sprocket 234 is connected to the horizontal stabilizer 2421 via a rotating shaft. The adjustable sprocket 2423 inside the shaft and the sprocket fixing member 2424 are connected via the rotating shaft. The horizontal stabilizer 2421 has a groove at the position corresponding to the sprocket fixing member 2424. The sprocket fixing member 2424 is fixed to the horizontal stabilizer 2421 with bolts. The adjustable sprocket 2423 inside the shaft engages with the chain body 236 between the control component base frame 225 and the lower guide sprocket 234. When the overall device adapts to the depth of the shaft body 100, it can adjust the horizontal stabilizer component 242. The number of adjustable sprockets 2423 in the horizontal stabilizing component 242 can be increased or decreased, and their left and right positions can be adjusted so that the chain body 236 can be guided to a suitable operating position to ensure the stability of the chain body 236. When adjusting the position of the sprocket fixing component 2424, the bolt assembly on the sprocket fixing component 2424 is removed. The sprocket fixing component 2424 is divided into a front part and a rear part. The front part is connected to the adjustable sprocket 2423 in the well through a rotating shaft, and the front part is in contact with the groove of the horizontal stabilizing frame 2421. After adjusting the position of the front part, the rear part of the sprocket fixing component 2424 is connected to the front part through the bolt assembly. The front part and the rear part will be clamped on the horizontal stabilizing frame 2421, and the position of the adjustable sprocket 2423 in the well can be locked.

[0039] The bottom of the outer bucket shell 251 is connected to the inner bucket shell 252 via a pivot. The rear crossarm 253 is connected to the back of the outer bucket shell 251. The rear crossarm 253 is connected to the chain body 236. A tension spring connects the inner bucket shell 252 and the outer bucket shell 251. The buckle 254 is connected to the outer bucket shell 251. The buckle 254 engages with the buckle plate 255. The buckle plate 255 is connected to the inner bucket shell 252 via a pivot. The adjusting plate 256 is connected to the pivot of the buckle plate 255. The adjusting plate 256 is released from the pull plate 257. The pull plate 257 is connected to the outer mounting bracket 258. The outer mounting bracket 258 is connected to the bottom steel plate seat 212. A tension spring connects the buckle plate 255 and the inner bucket shell 252.

[0040] Working Principle: Existing chain bucket muck conveying devices cannot independently adjust their structural height to adapt to shafts of different depths. This necessitates tedious redesign and modification of the device each time a shaft of varying depth is encountered. This customization not only increases costs and time but also leads to project delays and additional expenses, as it requires downtime for maintenance. Furthermore, the redesign of the device may require additional engineering design and adjustments due to changes in shaft depth, increasing the complexity and uncertainty of the entire project. In the corresponding muck conveying component group 200, during actual use, the muck excavated by the tunnel boring machine is directly conveyed to the muck buffer frame 241. Subsequently, the main drive motor 213 is started, which drives the drive sprocket 2311 to rotate via a synchronous transmission belt connected to the working end. The rotation of the drive sprocket 2311 drives the three chain bodies 236 to run. Figure 5 and Figure 6As shown, when the chain body 236 is running, it drives the outer bucket shell 251 and inner bucket shell 252 in the chain bucket assembly 25 to dig up the soil and debris in the buffer soil and debris frame 241. Some of the soil and debris will enter the outer bucket shell 251 and inner bucket shell 252. As the chain body 236 moves, the outer bucket shell 251 and inner bucket shell 252 containing soil and debris will pass through the horizontal stabilizing component 242, the control component base frame 225 and the main guide sprocket 2312, and then dump the soil and debris inside. After dumping, the chain body 236 moves to perform cyclic operation. When facing vertical shafts of different depths, the control drive motor 221 is controlled to drive the load-bearing screw 222 to rotate. The different rotation directions of the load-bearing screw 222 can control the position of the moving frame 224 to move up and down in the guide frame 223. The movement of the moving frame 224 will drive the height adjustment. The height of the sprocket 232 changes simultaneously. When the height of the sprocket 232 changes, the depth of the buffer soil and slag frame 241 within the shaft body 100 can be adjusted accordingly. When the shaft is shallower, the moving frame 224 and the height-adjusting sprocket 232 are raised, thereby raising the position of the buffer soil and slag frame 241 to adapt to the depth of the shaft body 100. When the shaft body 100 is deeper, the moving frame 224 and the height-adjusting sprocket 232 are lowered, causing the buffer soil and slag frame 241 to descend and contact the bottom of the shaft body 100. Through the action of this overall structure, this chain bucket slag conveying device can adaptively adjust to different depths of the shaft body 100, eliminating the need for customization and modification each time it is used for shaft bodies 100 of different depths, thus reducing working time and costs. Existing chain bucket slag discharge devices are inefficient at handling slag and leave residue, which reduces the cleaning effect of the device. Residual slag not only increases the difficulty of cleaning but may also lead to a decline in equipment performance and operating efficiency. Therefore, in addition to the issue of shaft depth adjustment, improving the cleaning efficiency of the slag discharge device is a pressing technical challenge. Correspondingly, in the chain bucket assembly 25 of the designed slag conveying component group 200, when the slag loaded in the outer bucket shell 251 and inner bucket shell 252 moves to the position of the pull plate component 257, for... Figure 12 and Figure 14In the current structural state, the pull plate 257 will contact the adjusting plate 256. As the outer hopper shell 251 and inner hopper shell 252 continue to move, the pull plate 257 pulls the adjusting plate 256 to rotate. The movement of the adjusting plate 256 will drive the buckle plate 255, which will disengage from the buckle tooth 254. At this time, due to the gravity of the soil inside, the inner hopper shell 252 will rotate and open through the pivot inside the outer hopper shell 251. After opening, the soil inside will be discharged. At this time, the tension spring between the outer hopper shell 251 and the inner hopper shell 252 will extend. After the soil inside is discharged, the tension spring will release its stored force, pulling the inner hopper shell 252 back to its original position. At this time, the buckle tooth 254 will push the buckle plate 255 open, and the tension spring between the buckle plate 255 and the inner hopper shell 252 will extend again, and the buckle plate 255 will re-engage with the buckle tooth 254. To ensure the locking of the outer bucket shell 251 and the inner bucket shell 252, after the buckle plate 255 and the buckle tooth 254 are engaged, the tension spring between the buckle plate 255 and the inner bucket shell 252 will release its stored force, increasing the engagement strength between the buckle plate 255 and the buckle tooth 254, ensuring the stability of the locking of the outer bucket shell 251 and the inner bucket shell 252. The tension of the tension spring between the buckle plate 255 and the inner bucket shell 252 is less than the tension of the tension spring between the inner bucket shell 252 and the outer bucket shell 251. This chain bucket assembly 25 design allows the soil and slag inside to fall efficiently from the gap between the inner bucket shell 252 and the outer bucket shell 251 after the inner bucket shell 252 is opened. Compared with the current technology of direct dumping, it can complete the dumping efficiently and quickly, and the dumping is cleaner, reducing the situation of soil and slag residue and improving the practicality of the overall chain bucket conveyor.

Claims

1. A muck removal device for a shield tunnel, comprising a vertical shaft body, characterized in that: A soil and slag conveying assembly is provided on one side of the main shaft body. The soil and slag conveying assembly is used to convey the slag and soil at the bottom of the main shaft body to the outside. The soil and slag conveying assembly includes a drive base assembly, a height control assembly, a conveying chain assembly, an in-shaft stabilization assembly, and a chain bucket assembly. The drive base assembly is used to drive the operation of the conveying chain assembly. The drive base assembly includes a reinforced concrete base. A bottom steel plate seat is provided on the top of the reinforced concrete base. A main drive motor is provided on the top of the bottom steel plate seat. An inclined frame is provided on one side of the bottom steel plate seat. An inner vertical frame is provided on the side of the inclined frame. The height control component is used to adapt and adjust the depth of the shaft body. The height control component includes a control drive motor, a load-bearing screw is provided on one side of the control drive motor, a guide frame is provided outside the load-bearing screw, a movable frame is provided inside the guide frame, and a control component base frame is provided at one end of the guide frame. The conveyor chain assembly is used to drive the chain bucket assembly for conveying. The conveyor chain assembly includes a drive guide assembly, which includes a drive sprocket and a main guide sprocket. A height adjustment sprocket is provided above the drive guide assembly. The height adjustment sprocket is connected to a movable frame via a rotating shaft. A front guide sprocket is provided on one side of the height adjustment sprocket. A lower guide sprocket is provided on top of the front guide sprocket. A rear guide sprocket is provided above the lower guide sprocket. The rear guide sprocket is engaged with a chain body. The in-shaft stabilization component is used to provide auxiliary support for the conveyor chain assembly structure inside the shaft body. The in-shaft stabilization component includes a buffer soil frame, which is used to temporarily store the soil to be conveyed. The lower guide sprocket is connected to the buffer soil frame through a rotating shaft. The buffer soil frame is located at the bottom of the shaft body. A horizontal stabilization component is provided on one side of the buffer soil frame. The horizontal stabilization component includes a horizontal stabilizing frame. An in-shaft guide sprocket is provided on the side of the horizontal stabilizing frame. An in-shaft adjustable sprocket is provided on one side of the in-shaft guide sprocket. A sprocket fixing component is provided on one side of the adjustable sprocket. The movement of the moving frame will cause the height adjustment sprocket to change simultaneously. When the height adjustment sprocket changes, the depth of the buffer soil frame inside the shaft body can be adjusted accordingly. The conveyor chain assembly is externally provided with a chain bucket assembly, which is used for loading and unloading slag and soil. The chain bucket assembly includes an outer bucket shell, an inner bucket shell at the bottom of the outer bucket shell, a rear cross arm on the side of the outer bucket shell, a buckle tooth on one side of the outer bucket shell, a buckle plate on one side of the buckle tooth, an adjusting plate on the side of the buckle plate, a pulling plate on one side of the adjusting plate, and an external mounting frame on the outside of the pulling plate.

2. The shield tunnel muck removal device according to claim 1, characterized in that: The reinforced concrete base is connected to the shaft body via a groove. The bottom steel plate base is fixed to the reinforced concrete base with expansion bolts. The main drive motor is connected to the top of the bottom steel plate base via a mounting bracket. The inclined frame is connected to the bottom steel plate base. The inner vertical frame is connected to the top of the bottom steel plate base.

3. The shield tunnel muck removal device according to claim 1, characterized in that: The control drive motor is connected to the top of the guide frame via a mounting bracket. The control drive motor is connected to the load-bearing screw via a synchronous belt drive. A sleeve is externally connected to the load-bearing screw, and the sleeve and the guide frame are connected via bearings. One end of the guide frame is connected to the control component base frame, and one end of the control component base frame is connected to the bottom steel plate seat. The control component base frame is connected to the load-bearing screw via bearings. The movable frame slides in contact with the guide frame via a sliding groove, and the movable frame is connected to the load-bearing screw via a nut pair.

4. A shield tunnel muck removal device according to claim 1, characterized in that: The chain body is provided with three sprockets. There are three drive sprockets, three height adjustment sprockets, three front guide sprockets and three lower guide sprockets. The drive sprockets, three height adjustment sprockets, three front guide sprockets and three lower guide sprockets are all the same in structure. There are two rear guide sprockets and two main guide sprockets. The two rear guide sprockets and the main guide sprockets mesh with the chain bodies on both sides. The drive sprockets, three height adjustment sprockets, three front guide sprockets and three lower guide sprockets mesh with the chain bodies.

5. A shield tunnel muck removal device according to claim 1, characterized in that: The drive sprocket is connected to the inner vertical frame via a rotating shaft, the main guide sprocket is connected to the inner vertical frame via a rotating shaft, the front guide sprocket and the rear guide sprocket are connected to the inclined frame via a rotating shaft, and the working end of the main drive motor drives the drive sprocket via a synchronous belt drive.

6. A shield tunnel muck removal device according to claim 1, characterized in that: The horizontal stabilizing components are provided in multiple sets, and the number of these sets can be increased or decreased depending on the extent to which the conveyor chain components are located inside the main shaft. Adjacent horizontal stabilizing components are connected by construction scaffolding.

7. A shield tunnel muck removal device according to claim 1, characterized in that: The horizontal stabilizer is connected to the side wall of the shaft body by expansion bolts. The guide sprocket inside the shaft is provided with two sets of sprockets, and the chain body between the guide sprocket and the lower guide sprocket before the two sets of sprockets mesh. The guide sprocket inside the shaft is connected to the horizontal stabilizer via a rotating shaft. The adjustable sprocket inside the shaft and the sprocket fixing component are connected via the rotating shaft. The horizontal stabilizer is provided with a sliding groove at the position of the corresponding sprocket fixing component. The sprocket fixing component is fixed to the horizontal stabilizer by bolts. The chain body between the guide sprocket and the lower guide sprocket after the adjustable sprocket inside the shaft meshes.

8. A shield tunnel muck removal device according to claim 1, characterized in that: The bottom of the outer bucket shell is connected to the inner bucket shell via a pivot. The rear crossarm is connected to the back of the outer bucket shell. The rear crossarm is connected to the chain body. A tension spring connects the inner bucket shell and the outer bucket shell. The buckle tooth is connected to the outer bucket shell. The buckle tooth engages with the buckle plate. The buckle plate is connected to the inner bucket shell via a pivot. An adjusting plate is connected to the pivot of the buckle plate. The adjusting plate is released from the pulling plate. The pulling plate is connected to the outer mounting frame. The outer mounting frame is connected to the bottom steel plate seat. A tension spring connects the buckle plate and the inner bucket shell.

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