CN220769450U - Slag collecting bucket structure with emergency closing function for tunnel boring machine - Google Patents
Slag collecting bucket structure with emergency closing function for tunnel boring machine Download PDFInfo
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- CN220769450U CN220769450U CN202322697643.3U CN202322697643U CN220769450U CN 220769450 U CN220769450 U CN 220769450U CN 202322697643 U CN202322697643 U CN 202322697643U CN 220769450 U CN220769450 U CN 220769450U
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- slag collecting
- collecting hopper
- side plate
- plate
- tunnel boring
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- 239000002893 slag Substances 0.000 title claims abstract description 112
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 239000002689 soil Substances 0.000 claims abstract description 26
- 239000004575 stone Substances 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000013049 sediment Substances 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract 1
- 230000005641 tunneling Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model provides a slag collecting hopper structure with an emergency closing function for a tunnel boring machine, which comprises a slag collecting hopper and a belt conveyor, wherein a sealing plate is connected to the front side surface of the slag collecting hopper, so that the sealing plate is positioned in front of the belt conveyor, the slag collecting hopper can be connected to a host machine of the tunnel boring machine in a back-and-forth movable manner, the belt conveyor is a telescopic belt conveyor which keeps synchronous with the back-and-forth movement of the slag collecting hopper in a telescopic manner, and the slag collecting hopper can be moved forwards to a limit position during normal use, so that an upper opening stretches into a soil bin to receive stone slag, and a gap is reserved between the sealing plate and a cutter disc; when emergent closing, can be with album sediment fill backward movement to extreme position, make the upper shed remove the soil bin, make the shrouding laminating seal the communication channel of soil bin and host computer inside at the host computer front end to avoid soil bin to gush out water, gush out the influence of mud to the host computer inside, the security is good, be difficult for leading to tunnel boring machine's damage.
Description
Technical Field
The utility model relates to the technical field of shield tunneling machines, in particular to a slag collecting bucket structure with an emergency closing function for a tunnel boring machine.
Background
Along with the continuous increase of tunnel engineering at home and abroad, tunnel Boring Machines (TBM) are increasingly widely used as construction edge tools for hard rock tunnels, and during construction, cutterheads of the tunnel boring machines cut surrounding rocks in front of the tunnels, cut stone slag is collected through cutterheads, the stone slag is guided to a slag collecting hopper extending into a soil bin by a slag sliding plate in the soil bin, a belt conveyor extending backwards is arranged below the slag collecting hopper, the stone slag discharged from an opening at the bottom of the slag collecting hopper falls on the belt conveyor, is transported to subsequent conveying equipment through the belt conveyor and is finally conveyed out of the tunnels.
But traditional collection sediment fill is fixed structure mostly, and the existence of belt feeder has taken up the inside intercommunication passageway of soil bin and tunnel boring machine host computer, and makes this passageway be in open state for a long time, when tunneling to rich water, silt stratum, the soil bin is interior to appear gushing water, gushing mud phenomenon easily, leads to a large amount of silt to get into inside the host computer along this passageway, can bring the security risk for tunnel constructor, also can lead to tunnel boring machine's abnormal damage.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a slag collecting bucket structure with an emergency closing function for a tunnel boring machine, which has good safety and is not easy to damage the tunnel boring machine.
In order to achieve the above purpose, the technical scheme provided by the utility model is that a slag collecting bucket structure with an emergency closing function for a tunnel boring machine comprises the following components:
the slag collecting hopper is of a cylindrical structure with an upper opening and a lower opening, and the upper opening of the slag collecting hopper is larger than the lower opening;
the belt conveyor extends in the front-rear direction, and the front end part of the belt conveyor is inclined forwards and downwards and is positioned below the lower opening;
the front side surface of the slag collecting hopper is connected with a sealing plate, the sealing plate is positioned in front of the belt conveyor, the slag collecting hopper is connected to a host machine of the tunnel boring machine in a back-and-forth movable mode, the belt conveyor is a telescopic belt conveyor, and the telescopic action of the belt conveyor is synchronous with the back-and-forth movement of the slag collecting hopper;
the slag collecting hopper is in a normal working state and an emergency closing state, when the slag collecting hopper is in the normal working state, the slag collecting hopper moves forwards to a limit position, the upper opening stretches into the soil bin to receive stone slag, and a gap is reserved between the sealing plate and the cutter disc; when the slag collecting hopper is in an emergency closing state, the slag collecting hopper moves backwards to a limit position, the upper opening moves out of the soil bin, and the sealing plate is attached to the front end of the main machine to seal a communication channel between the soil bin and the inside of the main machine.
Preferably, the sealing plate extends vertically in the left-right direction, and the shape of the rear surface of the sealing plate is similar to the cross-sectional shape of the front end part of the communication channel, and the similarity ratio is 1.2:1 to 1.5:1.
Preferably, the slag collecting hopper mechanism further comprises a driving mechanism for connecting the slag collecting hopper with the host machine and for driving the slag collecting hopper to move back and forth, wherein the driving mechanism comprises a sliding groove horizontally extending along the front-back direction, a sliding supporting rod penetrating through the sliding groove in a sliding manner, and a hydraulic oil cylinder for driving the sliding supporting rod to slide back and forth.
Further preferably, the chute is connected to the main unit, and the cross-sectional shape of the chute is rectangular with an opening, and the notch of the chute faces in the left-right direction or downward direction.
Further preferably, the front end of the sliding support rod is connected with the rear side surface of the slag collecting hopper, the rear end of the sliding support rod horizontally extends backwards, and the section shape of the sliding support rod is matched with the section shape of the chute.
Still preferably, the hydraulic cylinder horizontally extends along a front-back direction, the hydraulic cylinder comprises a cylinder body and a hydraulic rod with a front end protruding out of the cylinder body, the rear end of the cylinder body is rotationally connected with the main machine, the front end of the hydraulic rod stretches into the sliding groove to be rotationally connected with the rear end of the sliding support rod, and the rotation axes of the hydraulic rod and the cylinder body are perpendicular to a plane where the notch is located.
Still preferably, the driving mechanism has two groups, these two groups the driving mechanism sets up along controlling the direction interval, driving mechanism still includes the connection be in the draw runner board on the host computer, the spout is seted up on the draw runner board, the inner wall and the diapire of spout inlay and are equipped with the copper bar that extends along fore-and-aft direction.
Preferably, the slag collecting hopper is formed by welding a front side plate, a left side plate, a right side plate and a rear side plate, wherein the front side plate extends obliquely downwards and backwards from top to bottom, the upper edge of the front surface of the front side plate is connected with the rear surface of the sealing plate, the left side plate extends obliquely downwards and rightwards from top to bottom, the right side plate extends obliquely downwards and leftwards and is in mirror image with the left side plate in the left-right direction, the rear side plate extends vertically in the left-right direction, the left side and right sides of the rear side plate are protruded out of the left side plate and the right side plate to form a skirt edge, the bottom of the rear side plate is provided with a notch aligned with the belt conveyor, and a stone slag channel for stone slag to pass through is formed between the lower edge of the notch and the upper surface of the belt conveyor.
Still preferably, the slag collecting hopper further comprises a supporting plate and a reinforcing plate, the supporting plate horizontally extends along the front-rear direction, the front end of the supporting plate is connected with the rear surface of the sealing plate, the rear end of the supporting plate surrounds the lower end of the slag collecting hopper, the rear end of the supporting plate is connected with the front side plate, the left side plate, the lower end of the right side plate and the skirt edge, the reinforcing plate is arranged in an included angle cavity formed between the supporting plate and the left side plate or between the right side plate, the front end of the reinforcing plate is connected with the rear surface of the sealing plate, the rear end of the reinforcing plate is connected with the skirt edge of the rear side plate, and one side edge of the reinforcing plate is connected with the left side plate or the right side plate.
Preferably, a sealing gasket is arranged on the front surface of the sealing plate, and is tightly squeezed between the sealing plate and the front end surface of the host machine when the slag collecting hopper is in an emergency closing state.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. when tunneling is normal, the slag collecting hopper can be changed to a normal working state, at the moment, the slag collecting hopper moves forwards to a limit position, the upper opening stretches into the soil bin to receive stone slag, and a gap is reserved between the sealing plate and the cutterhead to avoid interference with the rotation of the cutterhead.
2. When the emergency such as water and mud is gushed in the soil bin, the slag collecting hopper can be changed to an emergency closing state, at the moment, the slag collecting hopper moves backwards to a limiting position, the upper opening moves out of the soil bin, the sealing plate is attached to the front end of the main machine so as to seal the communication channel between the soil bin and the main machine, and therefore sediment is prevented from entering the main machine, and the safety is good and the damage of the tunnel boring machine is not easy to cause.
Drawings
Fig. 1 is an axial sectional schematic view of a prior art tunnel boring machine.
Fig. 2 is an axial sectional view of a preferred embodiment of the present utility model, in which the slag collecting hopper is in a normal operating state.
FIG. 3 is an axial cross-sectional schematic view of a preferred embodiment of the utility model with the slag hopper in an emergency closed position.
Fig. 4 is an enlarged perspective view of the slag collecting hopper and the driving mechanism in fig. 2, with the gasket hidden for ease of viewing.
Fig. 5 is an enlarged partial schematic view at a in fig. 4.
Wherein: 1. a cutterhead; 2. a soil bin; 3. a host; 4. stone slag; 5. a communication passage; 10. a slag collecting hopper; 10a, an upper opening; 10b, a lower opening; 11. a front side plate; 12. a left side plate; 13. a right side plate; 14. a rear side plate; 141. a skirt edge; 142. a notch; 143. a ballast passage; 15. a support plate; 16. a reinforcing plate; 20. a belt conveyor; 30. a sealing plate; 31. a sealing gasket; 40. a driving mechanism; 41. a chute; 411. copper bars; 42. a sliding support rod; 431. a cylinder; 432. a hydraulic rod; 44. a chute plate.
Detailed Description
The front-back and up-down directions described in the present utility model are the left-right and up-down directions in fig. 2 and 3, and the left-right directions described in the present utility model are the inside-outside directions in fig. 2 and 3.
As shown in fig. 2 to 5, the slag collecting bucket structure with the emergency closing function for the tunnel boring machine provided by the utility model comprises a slag collecting bucket 10, a belt conveyor 20, a sealing plate 30 and a driving mechanism 40, wherein the slag collecting bucket 10 is of a cylindrical structure with upper and lower openings, and the opening area of an upper opening 10a of the slag collecting bucket 10 is larger than that of a lower opening 10 b; the belt conveyor 20 extends in the front-rear direction, and the front end portion of the belt conveyor 20 is inclined forward and downward and is located below the lower opening 10 b; the sealing plate 30 is connected to the front side surface of the slag collecting hopper 10 and is positioned in front of the belt conveyor 20, the slag collecting hopper 10 is connected to the host machine 3 of the tunnel boring machine in a back-and-forth movable manner, the belt conveyor 20 is a telescopic belt conveyor, and the telescopic action of the belt conveyor 20 is synchronous with the back-and-forth movement of the slag collecting hopper 10; the slag collecting hopper 10 has a normal working state and an emergency closing state, when the slag collecting hopper 10 is in the normal working state, the slag collecting hopper 10 moves forwards to a limit position, the upper opening 10a stretches into the soil bin 2 to receive the stone slag 4, and a gap is reserved between the sealing plate 30 and the cutter head 1; when the slag collecting hopper 10 is in an emergency closing state, the slag collecting hopper 10 moves backwards to a limit position, the upper opening 10a moves out of the soil bin 2, and the sealing plate 30 is attached to the front end of the main machine 3 to seal the communication channel 5 between the soil bin 2 and the interior of the main machine 3.
The advantages of this arrangement are that:
1. when tunneling is normal, the slag collecting hopper can be changed to a normal working state, at the moment, the slag collecting hopper moves forwards to a limit position, the upper opening stretches into the soil bin to receive stone slag, and a gap is reserved between the sealing plate and the cutterhead to avoid interference with the rotation of the cutterhead.
2. When the emergency such as water and mud is gushed in the soil bin, the slag collecting hopper can be changed to an emergency closing state, at the moment, the slag collecting hopper moves backwards to a limiting position, the upper opening moves out of the soil bin, the sealing plate is attached to the front end of the main machine so as to seal the communication channel between the soil bin and the main machine, and therefore sediment is prevented from entering the main machine, and the safety is good and the damage of the tunnel boring machine is not easy to cause.
In the present embodiment, the sealing plate 30 extends vertically in the left-right direction, and the shape of the rear surface of the sealing plate 30 is similar to the cross-sectional shape of the front end portion of the communication passage 5 by a ratio of 1.2:1 to 1.5:1 so as to completely close the communication passage 5.
The driving mechanism 40 is used for connecting the slag collecting hopper 10 and the host machine 3 and driving the slag collecting hopper 10 to move back and forth, and the driving mechanism 40 comprises a sliding groove 41 horizontally extending along the front-back direction, a sliding support rod 42 penetrating the sliding groove 41 in a sliding manner back and forth, a hydraulic cylinder for driving the sliding support rod 42 to slide back and forth, and a sliding groove plate 44 connected to the host machine 3; specifically, the chute 41 is formed on the chute plate 44 to realize connection of the chute 41 and the host computer 3, the section of the chute 41 is rectangular with an opening, and the notch of the chute 41 faces to the left and right directions to reduce the possibility of stone slag entering; the front end part of the sliding support rod 42 is connected with the rear side surface of the slag collecting hopper 10, the rear end part of the sliding support rod 42 extends backwards and horizontally, and the section shape of the sliding support rod 42 is matched with the section shape of the chute 41; the hydraulic cylinder horizontally extends along the front-back direction, the hydraulic cylinder comprises a cylinder body 431 and a hydraulic rod 432, the front end part of the hydraulic rod 432 protrudes out of the cylinder body 431, the rear end part of the cylinder body 431 is rotationally connected with the main machine 3, the front end part of the hydraulic rod 432 stretches into the sliding groove 41 to be rotationally connected with the rear end part of the sliding support rod 42, and the rotation axes of the hydraulic rod 432 and the cylinder body 431 are perpendicular to the plane where the notch of the sliding groove 41 is located.
In order to improve the stability and smoothness of the forward and backward movement of the slag collecting hopper, further, the driving mechanisms 40 have two groups, the two groups of driving mechanisms 40 are arranged at intervals along the left-right direction, and copper bars 411 extending along the forward and backward direction are embedded in the inner wall and the bottom wall of the chute 41.
The slag collecting hopper 10 is formed by welding a front side plate 11, a left side plate 12, a right side plate 13 and a rear side plate 14, wherein the front side plate 11 extends obliquely downwards and backwards from top to bottom, the inclination angle (the included angle between the rear side plate and the horizontal plane) is used for adjusting the inlet and outlet ratio of the slag 4, the included angle is preferably 60-70 degrees, in the embodiment, the included angle is 67 degrees, the upper edge of the front surface of the front side plate 11 is welded with the rear surface of the sealing plate 30, the left side plate 12 extends obliquely downwards and rightwards from top to bottom, the right side plate 13 extends obliquely downwards and leftwards and is mirror images of the left side plate 12 in the left-right direction, the rear side plate 14 extends vertically in the left-right direction, the left side and right sides of the rear side plate 14 protrude from the left side plate 12 and the right side plate 13 to form a skirt edge 141, the bottom of the rear side plate 14 is provided with a notch 142 aligned with the belt conveyor 20, and a slag channel 143 for the slag 4 to pass through between the lower edge of the notch 142 and the upper surface of the belt conveyor 20.
To improve the connection strength, in this embodiment, the slag collecting bucket 10 further includes a support plate 15 and a reinforcing plate 16, the support plate 15 extends horizontally along the front-rear direction, the front end of the support plate 15 is welded to the rear surface of the sealing plate 30, the rear end of the support plate 15 is disposed around the lower end of the slag collecting bucket 10, specifically, the rear end of the support plate 15 is welded to the lower ends of the front side plate 11, the left side plate 12 and the right side plate 13 and the skirt 141, the reinforcing plate 16 has two reinforcing plates 16 respectively disposed in the cavity of the included angle formed between the support plate 15 and the left side plate 12 and the right side plate 13, the front end of the reinforcing plate 16 is welded to the rear surface of the sealing plate 30, the rear end of the reinforcing plate 16 is welded to the skirt 141 of the rear side plate 14, and one side of the reinforcing plate 16 is welded to the corresponding left side plate 12 or right side plate 13.
To ensure the sealing effect, in this embodiment, the front surface of the sealing plate 30 is provided with an annular gasket 31, and when the slag hopper 10 is in an emergency closed state, the gasket 31 is squeezed between the sealing plate 30 and the front end surface of the main machine 3 to form a seal.
In the present embodiment, the front end portion of the slide support rod 42 is welded to the rear surface of the skirt 141.
The slag collecting bucket structure with the emergency closing function for the tunnel boring machine provided by the utility model has the advantages that the hydraulic oil cylinder is adopted for driving, so that the remote automatic control can be realized, the operation safety of personnel is improved, the sudden water and mud flushing phenomena can be dealt with, the engineering adaptability of the tunnel boring machine is improved, meanwhile, the structure is simple, the improvement can be conveniently carried out on the basis of the existing tunnel boring machine, and the popularization and the use are easy.
The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A slag collecting bucket structure with emergency closing function for a tunnel boring machine, comprising:
the slag collecting hopper is of a cylindrical structure with an upper opening and a lower opening, and the upper opening of the slag collecting hopper is larger than the lower opening;
the belt conveyor extends in the front-rear direction, and the front end part of the belt conveyor is inclined forwards and downwards and is positioned below the lower opening;
the method is characterized in that:
the front side surface of the slag collecting hopper is connected with a sealing plate, the sealing plate is positioned in front of the belt conveyor, the slag collecting hopper is connected to a host machine of the tunnel boring machine in a back-and-forth movable mode, the belt conveyor is a telescopic belt conveyor, and the telescopic action of the belt conveyor is synchronous with the back-and-forth movement of the slag collecting hopper;
the slag collecting hopper is in a normal working state and an emergency closing state, when the slag collecting hopper is in the normal working state, the slag collecting hopper moves forwards to a limit position, the upper opening stretches into the soil bin to receive stone slag, and a gap is reserved between the sealing plate and the cutter head; when the slag collecting hopper is in an emergency closing state, the slag collecting hopper moves backwards to a limit position, the upper opening moves out of the soil bin, and the sealing plate is attached to the front end of the main machine to seal a communication channel between the soil bin and the inside of the main machine.
2. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 1, wherein: the sealing plate vertically extends along the left-right direction, the shape of the rear surface of the sealing plate is similar to the cross-sectional shape of the front end part of the communication channel, and the similarity ratio is 1.2:1 to 1.5:1.
3. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 1, wherein: the slag collecting hopper mechanism further comprises a driving mechanism used for connecting the slag collecting hopper with the host machine and driving the slag collecting hopper to move back and forth, wherein the driving mechanism comprises a sliding groove horizontally extending along the front-back direction, a sliding supporting rod capable of penetrating through the sliding groove in a front-back sliding manner, and a hydraulic oil cylinder used for driving the sliding supporting rod to slide back and forth.
4. A slag collecting hopper structure with emergency closing function for a tunnel boring machine according to claim 3, wherein: the chute is connected to the host machine, the cross section of the chute is rectangular with an opening, and the notch of the chute faces to the left and right directions or faces to the lower direction.
5. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 4, wherein: the front end of the sliding support rod is connected with the rear side face of the slag collecting hopper, the rear end of the sliding support rod horizontally extends backwards, and the section shape of the sliding support rod is matched with the section shape of the chute.
6. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 4, wherein: the hydraulic cylinder horizontally extends along the front-back direction, the hydraulic cylinder comprises a cylinder body and a hydraulic rod, the front end part of the hydraulic rod protrudes out of the cylinder body, the rear end part of the cylinder body is rotationally connected with the main machine, the front end part of the hydraulic rod stretches into the sliding groove to be rotationally connected with the rear end part of the sliding support rod, and the hydraulic rod and the rotating shaft axis of the cylinder body are perpendicular to the plane where the notch is located.
7. A slag collecting hopper structure with emergency closing function for a tunnel boring machine according to claim 3, wherein: the driving mechanism is provided with two groups, the two groups of driving mechanisms are arranged at intervals along the left-right direction, the driving mechanism further comprises a sliding groove plate connected to the host machine, the sliding groove is formed in the sliding groove plate, and copper bars extending along the front-back direction are embedded in the inner wall and the bottom wall of the sliding groove.
8. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 1, wherein: the slag collecting hopper is formed by welding a front side plate, a left side plate, a right side plate and a rear side plate, wherein the front side plate extends from top to bottom in a backward inclined manner, the upper edge of the front surface of the front side plate is connected with the rear surface of the sealing plate, the left side plate extends from top to bottom in a downward inclined manner, the right side plate extends from top to bottom in a leftward inclined manner and is in mirror images with the left side plate in the left-right direction, the rear side plate extends vertically in the left-right direction, the left side and the right side of the rear side plate are protruded out of the left side plate and the right side plate to form a skirt edge, a notch aligning the belt conveyor is arranged at the bottom of the rear side plate, and a stone slag channel for allowing stone slag to pass through is formed between the lower edge of the notch and the upper surface of the belt conveyor.
9. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 8, wherein: the slag collecting hopper further comprises a supporting plate and a reinforcing plate, the supporting plate horizontally extends along the front-back direction, the front end portion of the supporting plate is connected with the rear surface of the sealing plate, the rear end portion of the supporting plate surrounds the lower end portion of the slag collecting hopper, the rear end portion of the supporting plate is connected with the front side plate, the left side plate, the lower end portion of the right side plate and the skirt edge, the reinforcing plate is arranged in an included angle cavity formed between the supporting plate and the left side plate or between the right side plate, the front end portion of the reinforcing plate is connected with the rear surface of the sealing plate, the rear end portion of the reinforcing plate is connected with the skirt edge of the rear side plate, and one side edge of the reinforcing plate is connected with the left side plate or the right side plate.
10. The slag collecting hopper structure with emergency closing function for tunnel boring machine according to claim 1, wherein: the front surface of the sealing plate is provided with a sealing gasket, and when the slag collecting hopper is in an emergency closing state, the sealing gasket is squeezed between the sealing plate and the front end surface of the host.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322697643.3U CN220769450U (en) | 2023-10-09 | 2023-10-09 | Slag collecting bucket structure with emergency closing function for tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322697643.3U CN220769450U (en) | 2023-10-09 | 2023-10-09 | Slag collecting bucket structure with emergency closing function for tunnel boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769450U true CN220769450U (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322697643.3U Active CN220769450U (en) | 2023-10-09 | 2023-10-09 | Slag collecting bucket structure with emergency closing function for tunnel boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769450U (en) |
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2023
- 2023-10-09 CN CN202322697643.3U patent/CN220769450U/en active Active
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