CN219101409U - Escape protection device and tunnel boring machine - Google Patents
Escape protection device and tunnel boring machine Download PDFInfo
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- CN219101409U CN219101409U CN202320138720.9U CN202320138720U CN219101409U CN 219101409 U CN219101409 U CN 219101409U CN 202320138720 U CN202320138720 U CN 202320138720U CN 219101409 U CN219101409 U CN 219101409U
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Abstract
The utility model provides an escape protection device and a tunnel boring machine, and relates to the field of disaster lifesaving equipment. The escape protection device comprises a shell, a plurality of protection chairs and vitamin equipment, wherein the shell is arranged on a frame of the tunnel boring machine, the shell forms a closed cavity, the protection chairs and the vitamin equipment are arranged in the closed cavity, the protection chairs are arranged side by side, a space is reserved between the protection chairs and the inner wall of the shell, the vitamin equipment comprises an oxygen storage container and a breathing mask, the breathing mask is connected with the oxygen storage container, the breathing mask is arranged on the protection chairs, and a safety door is arranged on the side wall of the shell. The utility model provides an escape protection device and a tunnel boring machine, which can facilitate escape of underground constructors.
Description
Technical Field
The utility model relates to the field of disaster lifesaving equipment, in particular to an escape protection device and a tunnel boring machine.
Background
At present, the tunnel boring machine is widely applied to underground engineering, and the tunnel boring machine can suffer from disasters such as landslide, collapse, water surge, debris flow and the like in the process of excavating a tunnel.
In the prior art, when a tunnel security accident occurs, constructors can only select nearby avoidance to wait for external rescue; or escape out of the tunnel in an attempt to escape from the ground tunnel before the hazard is swept over itself.
However, the self-rescue methods have large risks, and effective escape of constructors is difficult to ensure effectively.
Disclosure of Invention
In order to solve at least one problem in the background art, the utility model provides an escape protection device and a tunnel boring machine, which can facilitate escape of underground constructors.
In order to achieve the above object, the present utility model provides the following technical solutions:
in a first aspect, the utility model provides an escape protection device, the escape protection device is applied to a tunneling machine, the escape protection device comprises a shell, a plurality of protection chairs and vitamin equipment, the shell is arranged on a frame of the tunneling machine, the shell forms a closed cavity, the protection chairs and the vitamin equipment are arranged in the closed cavity, the protection chairs are arranged side by side, a space is reserved between the protection chairs and the inner wall of the shell, the vitamin equipment comprises an oxygen storage container and a breathing mask, the breathing mask is connected with the oxygen storage container, the breathing mask is arranged on the protection chairs, and a safety door is arranged on the side wall of the shell.
As an alternative embodiment, the housing includes a first housing and a second housing, the first housing surrounding the second housing, the first housing being coupled to the second housing.
As an alternative embodiment, the safety door comprises a first safety door and a second safety door, the first safety door is arranged on the first shell, the second safety door is arranged on the second shell, and the first safety door and the second safety door are positioned on the same side of the escape protection device.
As an alternative embodiment, the first safety door opens outside the closed chamber and the second safety door opens inside the closed chamber.
As an alternative embodiment, the outer wall of the first housing is provided with a lifting lug.
As an alternative embodiment, the top of the first housing is curved.
As an optional implementation mode, the airtight cavity is also provided with a standby power supply, a signal generator, communication equipment and a storage rack, the signal generator can automatically emit distress signals outwards at intervals of preset time, the signal generator and the communication equipment are arranged on the protection chair, and the storage rack is fixed on the inner wall of the shell above the protection chair.
As an alternative embodiment, the protection chair has a protection frame, the protection frame is disposed at an edge of the protection chair, and the protection chair and the protection frame form a protection space to protect the evacuee through the protection space.
As an alternative embodiment, the first housing is enclosed on the top wall of the second housing and the adjacent three side walls, and the first housing and the second housing are welded together.
In a second aspect, the utility model also provides a tunneling machine, comprising a machine body and a frame, wherein the frame is connected to the rear of the machine body, and any one escape protection device in the first aspect is arranged on the frame.
The escape protection device comprises a shell, a plurality of protection chairs and vitamin equipment, wherein the shell is arranged on a frame of the tunnel boring machine, the shell forms a closed cavity, the protection chairs and the vitamin equipment are arranged in the closed cavity, the protection chairs are arranged side by side, a space is reserved between the protection chairs and the inner wall of the shell, the vitamin equipment comprises an oxygen storage container and a breathing mask, the breathing mask is connected with the oxygen storage container, the breathing mask is arranged on the protection chairs, and a safety door is arranged on the side wall of the shell. The escape protection device provided by the utility model can be placed on a frame at the back of a tunnel boring machine at ordinary times and moves along with the tunnel boring machine, when a ground safety accident occurs, on-site constructors can escape towards the place where the escape protection device is arranged, the constructors can enter into the closed cavity by opening the safety door on the shell, the evacuees entering into the inside of the escape protection device can sit on the protection chair to fix and protect the evacuees by the protection chair, so that the evacuees are prevented from being injured when the escape protection device is impacted, and because the escape protection device is of a closed structure, the evacuees can wear the breathing mask on the protection chair in order to prevent the anoxic condition in the closed cavity. Therefore, the escape protection device provided by the utility model can facilitate underground constructors to escape when safety accidents occur, and improves the operation safety of the underground constructors.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of an escape protection device provided in an embodiment of the present utility model when the escape protection device is mounted on a frame of a tunnel boring machine;
FIG. 2 is an internal schematic view of FIG. 1;
fig. 3 is a front view of an escape protection device according to an embodiment of the present utility model;
fig. 4 is a side view of an escape protection device according to an embodiment of the present utility model;
fig. 5 is a side view of a protective chair in an escape protection device according to an embodiment of the present utility model;
fig. 6 is a rear view of a protective chair in an escape protection device according to an embodiment of the present utility model;
fig. 7 is a top view of a protection chair in an escape protection device according to an embodiment of the present utility model.
Reference numerals illustrate:
100-escape protection device;
110-a housing;
111-a first housing;
1111 a first security gate;
1112-lifting lugs;
112-a second housing;
1121-a second security gate;
120-a protective chair;
121-a protective frame;
130-a vitamin device;
131-an oxygen storage vessel;
132-a respiratory mask;
140-sealing the cavity;
150-a standby power supply;
160-a signal generator;
170-a communication device;
180-commodity shelf;
200-frame.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The tunnel boring machine may suffer from disasters such as landslide, collapse, water surge, and debris flow in the process of excavating a tunnel. In the prior art, when a tunnel safety accident occurs, a constructor can only select nearby avoidance, wait for external rescue or escape outside the tunnel so as to escape from the underground tunnel before danger waves and the constructor themselves. Obviously, the self-rescue methods have large risks, and effective escape of constructors is difficult to ensure effectively.
In view of the above, the utility model provides an escape protection device, which is applied to a tunnel boring machine, and comprises a shell, a plurality of protection chairs and vitamin equipment, wherein the shell is arranged on a frame of the tunnel boring machine, the shell forms a closed cavity, the protection chairs and the vitamin equipment are arranged in the closed cavity, the protection chairs are arranged side by side, a space is reserved between the protection chairs and the inner wall of the shell, the vitamin equipment comprises an oxygen storage container and a breathing mask, the breathing mask is connected with the oxygen storage container, the breathing mask is arranged on the protection chairs, and the side wall of the shell is provided with a safety door. The escape protection device provided by the utility model can be placed on a frame at the back of a tunnel boring machine at ordinary times and moves along with the tunnel boring machine, when a ground safety accident occurs, on-site constructors can escape towards the place where the escape protection device is arranged, the constructors can enter into the closed cavity by opening the safety door on the shell, the evacuees entering into the inside of the escape protection device can sit on the protection chair to fix and protect the evacuees by the protection chair, so that the evacuees are prevented from being injured when the escape protection device is impacted, and because the escape protection device is of a closed structure, the evacuees can wear the breathing mask on the protection chair in order to prevent the anoxic condition in the closed cavity. Therefore, the escape protection device provided by the utility model can facilitate underground constructors to escape when safety accidents occur, and improves the operation safety of the underground constructors.
FIG. 1 is a schematic view of an escape protection device provided in an embodiment of the present utility model when the escape protection device is mounted on a frame of a tunnel boring machine; FIG. 2 is an internal schematic view of FIG. 1; fig. 3 is a front view of an escape protection device according to an embodiment of the present utility model; fig. 4 is a side view of an escape protection device according to an embodiment of the present utility model; fig. 5 is a side view of a protective chair in an escape protection device according to an embodiment of the present utility model; fig. 6 is a rear view of a protective chair in an escape protection device according to an embodiment of the present utility model; fig. 7 is a top view of a protection chair in an escape protection device according to an embodiment of the present utility model. Referring to fig. 1 to 7, an embodiment of the present utility model provides an escape protection device 100, the escape protection device 100 is applied to a tunneling machine, the escape protection device 100 includes a housing 110, a plurality of protection chairs 120 and a vitamin device 130, the housing 110 is configured to be disposed on a frame 200 of the tunneling machine, the housing 110 forms a closed cavity 140, the protection chairs 120 and the vitamin device 130 are disposed in the closed cavity 140, the plurality of protection chairs 120 are disposed side by side, a space is provided between the protection chairs 120 and an inner wall of the housing 110, the vitamin device 130 includes an oxygen storage container 131 and a breathing mask 132, the breathing mask 132 is connected with the oxygen storage container 131, the breathing mask 132 is disposed on the protection chairs 120, and a safety door is disposed on a side wall of the housing 110.
The escape protection device 100 provided by the embodiment of the utility model can be placed on a frame at the back of a tunnel boring machine at ordinary times and move along with the tunnel boring machine, when a ground safety accident occurs, on-site constructors can escape towards the place where the escape protection device 100 is arranged, the constructors can enter the sealed cavity 140 by opening a safety door on the shell 110, the evacuees entering the inside of the escape protection device 100 can sit on the protection chair 120 to fix and protect the evacuees by the protection chair 120, so that the evacuees can be prevented from being injured when the escape protection device 100 is impacted, and because the escape protection device 100 is of a sealed structure, the evacuees can wear the breathing mask 132 on the protection chair 120 in order to prevent the oxygen deficiency condition in the sealed cavity 140. Therefore, the escape protection device 100 provided by the embodiment of the utility model can facilitate underground constructors to escape when safety accidents occur, and improves the operation safety of the underground constructors.
In the above embodiment, the housing 110 may include the first housing 111 and the second housing 112, the first housing 111 is disposed around the second housing 112, and the first housing 111 and the second housing 112 are connected together. By providing such a double-layered structure of the housing 110, the safety of the personnel inside the escape protection device 100 can be further improved, specifically, a certain gap can be provided between the first housing 111 and the second housing 112, and when the first housing 111 is deformed due to an external impact, the deformation of the first housing 111 cannot easily affect the second housing 112 inside, thereby ensuring the safety of the personnel inside the closed cavity 140.
In the above embodiment, the safety door may include a first safety door 1111 and a second safety door 1121, the first safety door 1111 is disposed on the first housing 111, the second safety door 1121 is disposed on the second housing 112, and the first safety door 1111 and the second safety door 1121 are located on the same side of the escape protection device 100. It will be appreciated that the provision of the safety door on the housing 110 generally has a certain effect on the strength of the housing 110, and thus, by providing two safety doors, not only can the effect be compensated, but also the overall safety of the escape protection device 100 can be prevented from being affected when one of the safety doors is damaged.
In the above embodiment, the first safety door 1111 may be opened to the outside of the closed chamber 140, the second safety door 1121 may be opened to the inside of the closed chamber 140, specifically, the evacuee may open the first safety door 1111 by pulling from the outside, or open the first safety door 1111 by pushing from the inside of the closed chamber 140, and likewise, the evacuee may open the second safety door 1121 by pushing from the outside, or open the second safety door 1121 by pulling from the inside of the closed chamber 140, it can be seen that the first safety door 1111 mainly receives the impact from the outside of the escape protection, the second safety door 1121 mainly receives the impact from the inside of the closed chamber 140, and the overall safety performance of the escape protection device 100 may be more comprehensively ensured by providing such a positive or negative safety door.
In the above embodiment, the lifting lugs 1112 may be provided on the outer wall of the first housing 111. After the rescue personnel find the escape protection device 100 at the ground, the rescue personnel can be connected to the lifting lug 1112 on the escape protection device 100 through the hook on the crane so as to pull the escape protection device 100 out of the ground, so that rescue difficulty can be reduced, rescue time can be shortened, and life safety of the escape personnel can be further guaranteed through the structure of the lifting lug 1112 arranged on the escape protection device 100.
In the above embodiment, the top of the first housing 111 may have an arc shape. The top of the first housing 111 is provided in an arc shape, which can increase the overall strength of the first housing 111 and improve the ability of the first housing 111 to withstand external impact.
In the above embodiment, the standby power supply 150, the signal generator 160, the communication device 170 and the shelf 180 may be further disposed in the closed cavity 140, the signal generator 160 may automatically emit distress signals outwards at preset intervals, the signal generator 160 and the communication device 170 are both disposed on the protection chair 120, and the shelf 180 is fixed on the inner wall of the housing 110 above the protection chair 120. The standby power supply 150 may provide electric energy for electric devices such as the signal generator 160 and the communication device 170, where the signal generator 160 may automatically send a signal including a current position outwards after an evasion person presses a start button, so that a rescue person can find the escape protection device 100 as soon as possible, the communication device 170 may allow the evasion person to communicate with a rescue person on the ground, so that the rescue person can know the condition inside the escape protection device 100 at any time, and thus an optimal rescue scheme is made, and the shelf 180 may be used to store some food and water to ensure the basic material requirement of the person escaping into the escape protection device 100.
As shown in fig. 5 and 7, in the above embodiment, the protection chair 120 may be provided with a protection frame 121, the protection frame 121 being provided at an edge of the protection chair 120, the protection chair 120 and the protection frame 121 forming a protection space to protect an evacuee through the protection space. When a safety accident occurs, the escape protection device 100 may shake violently or even roll over due to a huge impact, so that even if the escape protection device 100 is located inside, an evacuee may face some impact threats of an object which is still in the airtight chamber 140, and by arranging the protection frame 121 at the edge of the protection chair 120, the danger from the inside of the airtight chamber 140 can be effectively prevented, and the safety of the evacuee is further ensured.
As shown in fig. 2, in the above embodiment, the first housing 111 may be enclosed on the top wall of the second housing 112 and the adjacent three side walls, and the first housing 111 and the second housing 112 are welded together. Specifically, the three side walls may be a pair of major side walls (side walls with larger area) and one of minor side walls (side walls with smaller area) of the outer case 110, and it is understood that when a safety accident occurs, the top wall of the escape protection device 100 and the side walls with larger area are generally main impacted surfaces, and thus the requirement on strength is relatively high, and may be configured as a double-layer structure, whereas the bottom wall of the escape protection device 100 and the side walls with smaller area are generally difficult to be impacted too much, and thus may be configured as a single-side structure, and the safety door is generally also disposed on the side walls of the outer case 110 with smaller area, and considering that the provision of the safety door may reduce the strength of the outer case 110 to some extent, the side walls of the outer case 110 where the safety door is opened may be configured as a double-layer structure. Not all the side walls of the housing 110 are arranged to be of a double-layer structure, so that on one hand, materials and cost can be saved, on the other hand, processing difficulty can be reduced, and particularly, the first housing 111 in the embodiment can be formed by welding and splicing on the basis of the second housing 112, and processing is easy.
In the above embodiment, a rescue capsule door may be further disposed on the side wall corresponding to the safety door, and in daily situations, the rescue capsule door and the housing 110 are completely in a fixed and sealed connection, specifically, the rescue capsule door may be connected with the housing 110 through a threaded connection, if the safety door is deformed due to impact and cannot be opened normally, a rescue worker may open the standby rescue capsule door through a tool to implement rescue, so as to further guarantee the reliability of the escape protection device 100.
The escape protection device 100 provided by the embodiment of the utility model is applied to a tunneling machine, the escape protection device 100 comprises a shell 110, a plurality of protection chairs 120 and a vitamin device 130, the shell 110 is arranged on a frame 200 of the tunneling machine, the shell 110 forms a closed cavity 140, the protection chairs 120 and the vitamin device 130 are arranged in the closed cavity 140, the protection chairs 120 are arranged side by side, a space is reserved between the protection chairs 120 and the inner wall of the shell 110, the vitamin device 130 comprises an oxygen storage container 131 and a breathing mask 132, the breathing mask 132 is connected with the oxygen storage container 131, the breathing mask 132 is arranged on the protection chairs 120, and a safety door is arranged on the side wall of the shell 110. The escape protection device 100 provided by the embodiment of the utility model can be placed on a frame at the back of a tunnel boring machine at ordinary times and move along with the tunnel boring machine, when a ground safety accident occurs, on-site constructors can escape towards the place where the escape protection device 100 is arranged, the constructors can enter the sealed cavity 140 by opening a safety door on the shell 110, the evacuees entering the inside of the escape protection device 100 can sit on the protection chair 120 to fix and protect the evacuees by the protection chair 120, so that the evacuees can be prevented from being injured when the escape protection device 100 is impacted, and because the escape protection device 100 is of a sealed structure, the evacuees can wear the breathing mask 132 on the protection chair 120 in order to prevent the oxygen deficiency condition in the sealed cavity 140. Therefore, the escape protection device 100 provided by the embodiment of the utility model can facilitate underground constructors to escape when safety accidents occur, and improves the operation safety of the underground constructors.
In addition, the utility model also provides a tunnel boring machine, which comprises a machine body and a machine frame 200, wherein the machine frame 200 is connected to the rear of the machine body, and the machine frame 200 is provided with the escape protection device 100 in any one of the above embodiments. The frame 200 is connected to the rear part of the frame 200, the frame 200 moves along with the frame 200, and instruments and equipment related to the tunnel boring machine can be placed on the frame 200 at ordinary times, and similarly, the escape protection device 100 can also be placed on the frame 200, specifically, the escape protection device 100 and the frame 200 can be connected together in a clamping manner, so that the position of the escape protection device 100 on the frame 200 is limited, and the escape protection device 100 is prevented from falling off from the frame 200 during operation of the tunnel boring machine. When a safety accident occurs, a rescue worker can apply a pulling force to the escape protection device 100 through the crane, and under the action of the pulling force, the escape protection device 100 can be separated from the frame 200, so that the escape protection device 100 is pulled out. The escape protection device 100 may include a housing 110, a plurality of protection chairs 120, and a vitamin device 130, where the housing 110 is configured to be disposed on a frame 200 of a tunneling machine, the housing 110 forms a closed cavity 140, the protection chairs 120 and the vitamin device 130 are disposed in the closed cavity 140, the protection chairs 120 are disposed side by side, a space is provided between the protection chairs 120 and an inner wall of the housing 110, the vitamin device 130 includes an oxygen storage container 131 and a breathing mask 132, the breathing mask 132 is connected with the oxygen storage container 131, the breathing mask 132 is disposed on the protection chairs 120, and a safety door is disposed on a sidewall of the housing 110. The escape protection device 100 can be placed on a frame at the rear of a tunneling machine at ordinary times, and moves along with the tunneling machine, when an underground safety accident occurs, a constructor on site can escape towards the place where the escape protection device 100 is placed, and can enter the closed cavity 140 by opening a safety door on the outer shell 110, and the evacuee entering the inside of the escape protection device 100 can sit on the protection chair 120 to fix and protect the evacuee by the protection chair 120, so as to prevent the evacuee protection device 100 from being injured when impacted. Therefore, the escape protection device 100 provided by the embodiment of the utility model can facilitate underground constructors to escape when safety accidents occur, and improves the operation safety of the tunnel boring machine.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (10)
1. The utility model provides a protection device flees, its characterized in that, the protection device flees is applied to tunnel boring machine, the protection device flees includes shell, a plurality of protection chair and vitamin equipment, the shell is used for setting up in the frame of tunnel boring machine, the shell forms airtight chamber, the protection chair with vitamin equipment sets up airtight intracavity, a plurality of between the protection chair set up side by side, the protection chair with have the interval between the inner wall of shell, vitamin equipment includes oxygen storage container and respirator, the respirator with oxygen storage container is connected, the respirator sets up on the protection chair, the lateral wall of shell is provided with the emergency exit.
2. The escape protection device of claim 1, wherein the housing comprises a first housing and a second housing, the first housing surrounding the second housing, the first housing and the second housing being coupled together.
3. The escape protection device of claim 2, wherein the safety door comprises a first safety door and a second safety door, the first safety door is disposed on the first housing, the second safety door is disposed on the second housing, and the first safety door and the second safety door are on the same side of the escape protection device.
4. The escape protection device of claim 3, wherein the first safety door opens outside the enclosed cavity and the second safety door opens inside the enclosed cavity.
5. The escape protection device of any one of claims 2-4, wherein a lifting lug is provided on an outer wall of the first housing.
6. The escape protection device of any one of claims 2-4, wherein the top of the first housing is arcuate.
7. The escape protection device of any one of claims 1-4, wherein the enclosed cavity is further provided with a standby power supply, a signal generator, a communication device and a shelf, the signal generator can automatically emit distress signals outwards at preset intervals, the signal generator and the communication device are both arranged on the protection chair, and the shelf is fixed on the inner wall of the shell above the protection chair.
8. The escape protection device of any one of claims 1 to 4, wherein the protection chair has a protection frame provided at an edge of the protection chair, the protection chair and the protection frame forming a protection space to protect an evacuee through the protection space.
9. The escape protection device of any one of claims 2-4, wherein the first housing is enclosed outside a top wall and adjacent three side walls of the second housing, and the first housing and the second housing are welded together.
10. A tunnel boring machine, characterized by comprising a machine body and a machine frame, wherein the machine frame is connected to the rear of the machine body, and an escape protection device according to any one of claims 1-9 is arranged on the machine frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138720.9U CN219101409U (en) | 2023-01-18 | 2023-01-18 | Escape protection device and tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138720.9U CN219101409U (en) | 2023-01-18 | 2023-01-18 | Escape protection device and tunnel boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219101409U true CN219101409U (en) | 2023-05-30 |
Family
ID=86462705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320138720.9U Active CN219101409U (en) | 2023-01-18 | 2023-01-18 | Escape protection device and tunnel boring machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219101409U (en) |
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2023
- 2023-01-18 CN CN202320138720.9U patent/CN219101409U/en active Active
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