CN209704563U - Development machine - Google Patents
Development machine Download PDFInfo
- Publication number
- CN209704563U CN209704563U CN201822116008.0U CN201822116008U CN209704563U CN 209704563 U CN209704563 U CN 209704563U CN 201822116008 U CN201822116008 U CN 201822116008U CN 209704563 U CN209704563 U CN 209704563U
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- CN
- China
- Prior art keywords
- shield
- mounting portion
- notch
- development machine
- tail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 238000011161 development Methods 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims description 56
- 230000017105 transposition Effects 0.000 abstract description 4
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 14
- 239000002689 soil Substances 0.000 description 11
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model proposes a kind of development machines, comprising: shield body, the tail shield including being located at shield body tail portion；The front end of shield body is arranged in cutterhead；Tail shield includes shield tail shell, and shield tail shell is provided at least one notch away from the direction of cutterhead, and notch is located at the lower part of shield tail shell.The utility model proposes development machine, in the shield tail lower part of the housing of tail shield, at least one notch is set, development machine carry out excavation operation when, locating piece can be put down by notch, and then when being laid with section of jurisdiction, section of jurisdiction is laid on locating piece, section of jurisdiction is held up, avoids the occurrence of section of jurisdiction sinking, transposition.
Description
Technical field
The utility model relates to constructing tunnel equipment technical fields, in particular to a kind of development machine.
Background technique
With the development of development machine driving technology, development machine is widely used under the conditions of various wall rock geologies, In
In practical engineering application, since cutterhead edge and shield body have gap in radial directions, and on pipe sheet assembling tail shield, exist in this way
The above-mentioned clearance layer soft empty top of the slag easy to form, the soil layer different from that different geology sections are formed can cause section of jurisdiction to sink, easily
Position, and then influence construction quality.
Utility model content
The utility model aims to solve at least development machine existing in the prior art when encountering soft soil horizon, the pipe of installation
Piece will appear the technical issues of sinking dystopy.
For this purpose, some embodiments of the utility model proposes a kind of development machine for avoiding section of jurisdiction from sinking.
In view of this, some embodiments according to the present utility model, the utility model proposes a kind of development machines, comprising:
Shield body, the tail shield including being located at shield body tail portion；The front end of shield body is arranged in cutterhead；Tail shield includes shield tail shell, shield tail shell back
One end from cutterhead is formed at least one notch to the direction of cutterhead recess, and notch is located at the lower part of shield tail shell.
The utility model proposes development machine, at least one notch is set in the shield tail lower part of the housing of tail shield, in development machine
When carrying out excavation operation, locating piece can be put down by notch, and then when being laid with section of jurisdiction, section of jurisdiction is laid on locating piece, hold up
Section of jurisdiction avoids the occurrence of section of jurisdiction sinking, transposition.
In addition, the development machine in above-described embodiment provided by the utility model can also have following additional technical feature:
In the above-mentioned technical solutions, it is preferable that tail shield further include: at least one sealing plate is removably mounted on notch
On.
In the technical scheme, removably sealing plate is installed on notch, and then after on-the-spot investigation, if development machine
Operating location soil layer without adding locating piece, then sealing plate can be installed on notch, be isolated in external soil layer and shield body
Portion, it is ensured that development machine can normal operation, the section of jurisdiction for carrying out normality is laid with, and can be during excavator operation, in difference
Job step according to the actual conditions of soil layer install or remove sealing plate.
In any of the above-described technical solution, it is preferable that sealing plate is embedded in the notch；The edge of notch is provided with the first peace
Dress portion；The edge of sealing plate is provided with the second mounting portion compatible with the first mounting portion.
In the technical scheme, the edge of notch is provided with the first mounting portion, sealing plate is on being mounted on shield tail shell
When, be embedded in indentation, there, it is ensured that shield tail enclosure interior shape it is complete, guarantee the normal laying of section of jurisdiction.
In any of the above-described technical solution, it is preferable that the first mounting portion is hierarchic structure；Second mounting portion and the first installation
The cascaded surface in portion fits.
In the technical scheme, the first mounting portion is hierarchic structure, the cascaded surface phase of the second mounting portion and the first mounting portion
Fitting, it is ensured that sealing plate is embedded in notch, it is ensured that sealing plate will not be protruded to shield tail enclosure interior.
In any of the above-described technical solution, it is preferable that the cascaded surface of the first mounting portion is towards the inside of shield tail shell.
In the technical scheme, the cascaded surface of the first mounting portion is towards shield tail enclosure interior, and then installation and removal seal
The work of plate need to only be carried out in shield tail enclosure interior, facilitate the installation and removal of sealing plate.
In any of the above-described technical solution, it is preferable that further include: attachment screw passes through the second mounting portion, with the first installation
Portion's bolt.
In the technical scheme, it is connected by screw to shield tail shell and sealing plate, convenient for removing and installing for sealing plate.
In any of the above-described technical solution, it is preferable that be provided with stepped hole on sealing plate, the cascaded surface of stepped hole is towards shield
The inside of tail shell；Attachment screw is arranged in stepped hole, and the head of screw of attachment screw and the cascaded surface of stepped hole offset, head of screw
Sink to stepped hole.
In the technical scheme, by being provided with stepped hole on the second mounting portion, attachment screw sinks to stepped hole, will be close
Sealing plate links together with shield tail shell, and then ensure that the shape inside shield body, when being laid with section of jurisdiction, avoids attachment screw
It paves section of jurisdiction and leads to the dislocation of section of jurisdiction.
In any of the above-described technical solution, it is preferable that further include: on positioning pin, the first mounting portion and the second mounting portion
It is provided with location hole, positioning pin passes through location hole, to realize the positioning of sealing plate Yu shield tail shell.
In the technical scheme, by positioning finger setting shield tail shell and sealing plate, further facilitate the peace of sealing plate
Dress.
In any of the above-described technical solution, it is preferable that the second mounting portion is welded on shield tail shell.
In the technical scheme, the second mounting portion is connect with shield tail case weld, facilitates the processing of shield tail shell, without straight
It connects and processes hierarchic structure on shield tail shell.
In any of the above-described technical solution, it is preferable that multiple notches are to cross the vertical line of shield tail casing center as axisymmetrical
Setting.
In the technical scheme, multiple notches are arranged using the vertical line for crossing shield tail casing center as axisymmetrical, guarantee to place
Symmetry when locating piece, then section of jurisdiction is laid on locating piece, it can guarantee the stability of section of jurisdiction.
In any of the above-described technical solution, it is preferable that the length of the opening edge of notch is greater than the length on the bottom edge of notch.
In the technical scheme, the length of the opening edge of notch is greater than the length on the bottom edge of notch, and then puts by notch
When setting locating piece, shield tail shell is detached from convenient for locating piece.
The additional aspect and advantage of the utility model will become obviously in following description section, or practical new by this
The practice of type is recognized.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 shows the structural schematic diagram of the tail shield of the development machine of the utility model one embodiment offer；
Fig. 2 shows the structural schematic diagrams of the tail shield of the development machine of another embodiment of the utility model offer；
Fig. 3 shows the sectional view of indentation, there in tail shield as shown in Figure 2；
Fig. 4 shows the structural schematic diagram of the sealing plate in tail shield as shown in Figure 2；
Fig. 5 shows the development machine of the utility model one embodiment offer when being laid with section of jurisdiction, the position of section of jurisdiction and locating piece
Set relation schematic diagram；
Fig. 6 shows the structural schematic diagram of the notch in the development machine of the utility model one embodiment offer on tail shield.
Wherein, corresponding relationship of the Fig. 1 into Fig. 6 between appended drawing reference and component names are as follows:
1 tail shield, 12 shield tail shells, 122 first mounting portions, 14 notches, 16 sealing plates, 162 stepped holes, 2 sections of jurisdiction, 3 positioning
Block, 4 soil layers.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
The development machine provided referring to Fig. 1 to Fig. 6 description according to some embodiments of the utility model.
As shown in Figures 1 to 6, one embodiment according to the present utility model, the utility model provide a kind of development machine,
It include: shield body, the tail shield 1 including being located at shield body tail portion；The front end of shield body is arranged in cutterhead；Tail shield 1 includes shield tail shell 12,
Shield tail shell 12 deviates from one end of cutterhead, is provided at least one notch 14 being recessed to hand of cutter, and notch 14 is located at shield tail
The lower part of shell 12；Wherein, notch 14 is used for 2 lower section placement positioning block 3 of section of jurisdiction.
Development machine provided by the utility model is arranged at least one notch 14 in 12 lower part of shield tail shell of tail shield 1, is digging
When carrying out excavation operation into machine, locating piece 3 can be put down by notch 14, and then when being laid with section of jurisdiction 2, section of jurisdiction 2 is laid on positioning
On block 3, section of jurisdiction 2 is held up, avoids the occurrence of the sinking of section of jurisdiction 2, transposition.
In a particular embodiment, locating piece 3 can be the hard material such as sleeper, concrete block, nylon cushion block, plastic cushion
Material.
Wherein, the lower part of shield tail shell 12 refers to, development machine is mark to cross the horizontal line at 12 center of shield tail shell in operation
Standard, the shield tail shell 12 below horizontal line.
Development machine provided by the utility model is laid with section of jurisdiction 2 in operation, in the tail shield 1 of development machine, and then in tail shield 1
At least one notch 14 is arranged in lower part on shield tail shell 12, so as to when encountering soft soil horizon 4, from notch 14 at into tunnel
Placement positioning block 3 avoids the sinking and transposition of section of jurisdiction 2 to pave section of jurisdiction 2.
Further, as shown in Fig. 2, tail shield 1 further include: at least one sealing plate 16 is removably disposed in shield tail shell
On body 12, it is located at notch 14, is used for sealing gap 14.
In this embodiment, the working environment of development machine is indefinite, is not necessarily to placement positioning if in the hard work of soil layer 4
Block 3 paves section of jurisdiction 2, therefore, 16 sealing gap 14 of sealing plate is arranged, can unload sealing plate when encountering soft soil horizon 4
16, so as to placement positioning block 3, when encountering hard soil layer 4, mountable upper sealing panel 16, to complete the normal laying of section of jurisdiction 2,
It avoids native slag etc. from entering shield body by notch 14, has expanded the operating environment of development machine, and can guarantee under different operating environment
2 laying quality of section of jurisdiction, also, its structure is simple, convenient for disassembly and assembly, suitable for different geological conditions, and, guarantee shield tail function
While, meet the needs of construction quality.
In one embodiment of the utility model, it is preferable that as shown in Figure 3 and Figure 4, the edge of notch 14 is provided with
First mounting portion 122；The edge of sealing plate 16 is provided with second mounting portion compatible with the first mounting portion 122；Sealing plate 16
It is embedded in notch 14.
Wherein it is preferred to which the first mounting portion 122 is hierarchic structure, the cascaded surface of the second mounting portion and the first mounting portion 122
It fits.
In this embodiment, sealing plate 16 is embedded in notch 14, and sealing plate 16 is when being mounted on shield tail shell 12, it is ensured that
12 interior shape of shield tail shell it is complete, i.e., guarantee section of jurisdiction 2 assembly can be completed in shield tail shell 12, avoid sealing plate inside
Protrusion influences the assembly of section of jurisdiction 2.
Wherein, the first mounting portion 122 can be continuously provided in 14 edge of notch or intermittent setting on 14 side of notch
Edge.
In a particular embodiment, as shown in Figures 1 and 2, shield tail shell 12 is annular, shield tail shell 12 and sealing plate 16
Inner wall enclose a circle jointly.
Further, as shown in figure 3, the cascaded surface of the first mounting portion 122 is towards the inside of shield tail shell 12.
In this embodiment, the cascaded surface of the first mounting portion 122 is towards inside shield tail shell 12, and then installation and removal are close
The work of sealing plate 16 need to only carry out inside shield tail shell 12, facilitate the installation and removal of sealing plate 16.
In another embodiment of the utility model, it is preferable that the edge of notch 14 is by 12 inner wall of shield tail shell to outer
Wall is obliquely installed, and forms wedge structure, and the area surrounded positioned at 14 edge of notch of the outer wall of shield tail shell 12 is less than shield tail
The area that 14 edge of notch of the inner wall of shell 12 is surrounded, the edge of sealing plate 16 are adapted with the edge of notch 14.
In this embodiment, sealing plate 16 can be internally embedded notch 14 by shield tail shell 12, integrated seal plate 16
The operation of installation and removal carries out inside shield tail shell 12, facilitates the installation and removal of sealing plate 16.
In one embodiment of the utility model, it is preferable that further include: attachment screw passes through the second mounting portion, with the
One mounting portion, 122 bolt.
In this embodiment, it is connected by screw to shield tail shell 12 and sealing plate 16, convenient for the disassembly and peace of sealing plate 16
Dress.
Wherein, the quantity of attachment screw can be specific to be arranged according to the area of sealing plate 16, i.e. the area of sealing plate 16 is got over
Greatly, the quantity of attachment screw is more.
In one embodiment of the utility model, it is preferable that as shown in figure 3, being provided with stepped hole on sealing plate 16
162, the cascaded surface of stepped hole 162 is towards the inside of shield tail shell 12；Attachment screw is arranged in stepped hole 162, attachment screw
The cascaded surface of head of screw and stepped hole 162 offsets, and head of screw sinks to stepped hole 162.
In this embodiment, by being provided with stepped hole 162 on the second mounting portion, attachment screw sinks to stepped hole 162,
Sealing plate 16 and shield tail shell 12 are linked together, and then ensure that the shape inside shield body, when being laid with section of jurisdiction 2, is avoided
The paving section of jurisdiction 2 of attachment screw and the dislocation for leading to section of jurisdiction 2.
In one embodiment of the utility model, it is preferable that further include: positioning pin, the first mounting portion 122 and upper setting
There is first positioning hole, second location hole compatible with first positioning hole is provided on the second mounting portion, positioning pin passes through first
Location hole and second location hole.
In this embodiment, by positioning finger setting shield tail shell 12 and sealing plate 16, further facilitate sealing plate 16
Installation.
In one embodiment of the utility model, it is preferable that as shown in figure 3, the second mounting portion is welded on shield tail shell
On 12.
In this embodiment, since 12 volume of shield tail shell is larger, difficulty of processing is big, therefore, by the second mounting portion and shield
Tail shell 12 is welded to connect, and only need to be opened up notch 14 on shield tail shell 12, be facilitated the processing of shield tail shell 12, without straight
It connects and processes hierarchic structure on shield tail shell 12.
In one embodiment of the utility model, it is preferable that multiple notches 14 are with the vertical line at 12 center of shield tail shell excessively
For axisymmetrical setting.
In this embodiment, multiple notches 14 are arranged using the vertical line for crossing 12 center of shield tail shell as axisymmetrical, guarantee to put
Symmetry when locating piece 3 is set, then is laid with section of jurisdiction 2 on locating piece 3, can guarantee the stability of section of jurisdiction 2.
In one embodiment of the utility model, it is preferable that as shown in Figures 1 and 3, notch 14 is two, by shield tail
12 center of shell is less than or equal to 90 ° to the angle between the line at the center of two notches 14 respectively.
In one embodiment of the utility model, it is preferable that as shown in fig. 6, being projected after notch is projected to horizontal plane
In face, the length b of the opening edge of notch 14 is greater than the length a on the bottom edge of the notch 14, so that the formation of notch 14 one is trapezoidal
Notch, and, sealing plate 16 is adapted with notch 14, and the side length of 16 one end of sealing plate is greater than the side length of another side on the other side,
So that the edge formation one of sealing plate 16 is trapezoidal.
In this embodiment, length of the notch 14 away from one end of cutterhead is greater than length of the notch 14 towards cutterhead one end,
And then when by 14 placement positioning block 3 of notch, shield tail shell 12 is detached from convenient for locating piece 3.
The utility model provides a kind of tunnel shield formula TBM (TunnelBoringMachine) of 2 faulting of slab ends of anti-section of jurisdiction
Development machine facilitates in work progress and installs locating piece 3 in the empty top of the slag and gap of the shield tail, prevents 2 faulting of slab ends of section of jurisdiction, guarantees construction matter
Amount.
The shield tail of development machine by 1 shell of tail shield, with welding block, removably sealing plate 16, screw and positioning pin form, it is described
Removably sealing plate 16 be fixed on shield tail shell 12 by screw and positioning pin.
Wherein, be welded on shield tail shell 12 with welding block side, form the first mounting portion 122, the other side by screw and
Positioning pin and removably sealing plate 16.
Removable seal plate 16, removably sealing plate 16 is horn shape, and nose width is more slightly smaller than rear width size,
Shield tail shell 12 is facilitated to deviate from the locating piece 3 of section of jurisdiction 2.
In development machine in operation, it can choose and unload removably sealing plate 16, locating piece 3 is installed, with maladjustment
Broken ground prevents 2 faulting of slab ends of section of jurisdiction, specifically, as shown in figure 5, in development machine operation process, by lacking on shield tail shell 12
The downward placement positioning block 3 of mouth, locating piece 3 is deposited between the empty top of the slag of soil layer 4 and shield tail shell 12 and section of jurisdiction 2, pipe is paved
Piece 2 avoids section of jurisdiction 2 from sinking, and guarantees construction quality.
It in development machine in operation, also can choose installation removably sealing plate 16, do not need installation locating piece 3, with
It adapts to facilitate installation section of jurisdiction 2 compared with hard formation.
In the present invention, the terms such as term " installation ", " connected ", " connection ", " fixation " shall be understood in a broad sense, example
Such as, " connection " may be fixed connection or may be dismantle connection, or integral connection；" connected " can be directly connected,
It can also be indirectly connected through an intermediary.For the ordinary skill in the art, can understand as the case may be
The concrete meaning of above-mentioned term in the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (11)
1. a kind of development machine characterized by comprising
Shield body, the tail shield including being located at the shield body tail portion；
The front end of the shield body is arranged in cutterhead；
The tail shield includes shield tail shell, and the shield tail shell deviates from one end of the cutterhead to the direction concave shape of the cutterhead
At there is at least one notch, the notch is located at the lower part of the shield tail shell.
2. development machine according to claim 1, which is characterized in that the tail shield further include:
At least one sealing plate is removably mounted on the notch.
3. development machine according to claim 2, which is characterized in that
The sealing plate is embedded in the notch；
The edge of the notch is provided with the first mounting portion；
The edge of the sealing plate is provided with the second mounting portion compatible with first mounting portion.
4. development machine according to claim 3, which is characterized in that
First mounting portion is hierarchic structure；
The cascaded surface of second mounting portion and first mounting portion fits.
5. development machine according to claim 4, which is characterized in that
The cascaded surface of first mounting portion is towards the inside of the shield tail shell.
6. development machine according to claim 3, which is characterized in that further include:
Attachment screw passes through second mounting portion, with the first mounting portion bolt.
7. development machine according to claim 6, which is characterized in that
It is provided with stepped hole on second mounting portion, the cascaded surface of the stepped hole is towards the inside of the shield tail shell；
The attachment screw is arranged in the stepped hole, the cascaded surface phase of the head of screw of the attachment screw and the stepped hole
It supports, the head of screw sinks to the stepped hole.
8. the development machine according to any one of claim 3 to 7, which is characterized in that further include:
Location hole is provided on positioning pin, first mounting portion and second mounting portion, the positioning pin passes through described
Location hole.
9. the development machine according to any one of claim 3 to 7, which is characterized in that
Second mounting portion is welded on the shield tail shell.
10. development machine according to any one of claim 1 to 7, which is characterized in that
Multiple notches are arranged by axisymmetrical of the vertical line of the excessively described shield tail casing center.
11. development machine according to any one of claim 1 to 7, which is characterized in that
The length of the opening edge of the notch is greater than the length on the bottom edge of the notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822116008.0U CN209704563U (en) | 2018-12-17 | 2018-12-17 | Development machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822116008.0U CN209704563U (en) | 2018-12-17 | 2018-12-17 | Development machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209704563U true CN209704563U (en) | 2019-11-29 |
Family
ID=68637682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822116008.0U Withdrawn - After Issue CN209704563U (en) | 2018-12-17 | 2018-12-17 | Development machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209704563U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488319A (en) * | 2018-12-17 | 2019-03-19 | 中国铁建重工集团有限公司 | Development machine |
-
2018
- 2018-12-17 CN CN201822116008.0U patent/CN209704563U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488319A (en) * | 2018-12-17 | 2019-03-19 | 中国铁建重工集团有限公司 | Development machine |
| CN109488319B (en) * | 2018-12-17 | 2024-03-08 | 中国铁建重工集团股份有限公司 | Tunneling machine |
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Granted publication date: 20191129 Effective date of abandoning: 20240308 |
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| AV01 | Patent right actively abandoned |
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