CN212427194U - Utility tunnel with multidirectional shock attenuation support function - Google Patents
Utility tunnel with multidirectional shock attenuation support function Download PDFInfo
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- CN212427194U CN212427194U CN201920892974.3U CN201920892974U CN212427194U CN 212427194 U CN212427194 U CN 212427194U CN 201920892974 U CN201920892974 U CN 201920892974U CN 212427194 U CN212427194 U CN 212427194U
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Abstract
The utility model provides an underground utility tunnel with multidirectional shock attenuation support function, belong to underground infrastructure field, utility tunnel's lower part sets up gravel bearing basic unit, utility tunnel's upper portion and both sides set up internal connection board, the outside of internal connection board sets up external connection board, set up upper portion antidetonation reinforcing and supporting member above between internal connection board and external connection board, both sides between internal connection board and external connection board set up lateral part antidetonation reinforcing and supporting member, the bottom of internal connection board and external connection board is connected through the lower part connecting plate, set up concrete mortar protective housing outside the external connection board, set up pseudo-ginseng grey soil in concrete mortar protective housing's both sides, set up rammed soil layer on pseudo-ginseng grey soil and concrete mortar protective housing's upper portion; the beneficial effects are that can show the multidirectional shock attenuation shock resistance and the bearing and supporting capacity of increase utility tunnel structure, reducible multidirectional load is to the destruction of utility tunnel structure.
Description
Technical Field
The utility model belongs to underground infrastructure field especially relates to an underground utility tunnel with multidirectional shock attenuation support function.
Background
The construction of utility tunnel is energetically going on, and the region that utility tunnel reachd also can be more and more extensive. The utility tunnel plays an important role in meeting the basic demands of the civilian life and improving the comprehensive bearing capacity of the city, and reduces the cost of repeated repair of the road surface and the maintenance cost of the engineering pipeline. The integrity of the road surface and the durability of various pipelines are maintained, and the laying, increasing, decreasing, maintaining and daily management of various pipelines are facilitated. And the pipelines are put into the ground together, thus reducing the contradiction between overhead lines and greening. But the common comprehensive pipe gallery can only bear various load impacts on the ground in a short time and is difficult to achieve long-term anti-seismic effect, the sheets at the top of the common comprehensive pipe gallery directly bear dynamic load and static load, the wall bodies at two sides not only bear the dynamic load and the static load of the sheets at the top, but also bear the transverse load of side soil layers, so that the wall needs to be arranged thickly for enhancing the bearing capacity and the ground load impact resistance of the comprehensive pipe gallery and preventing the structural instability, and the structure is manufactured by cast-in-place or prefabricated parts, so that the engineering quantity is large, the construction period is long, the construction cost is high, the long-term popularization and use of the anti-seismic comprehensive pipe gallery are not facilitated, the construction and maintenance cost can be greatly increased, therefore, the anti-seismic structure which is beneficial to eliminating the load impacts on the ground to the pipe gallery is built, and the complete anti-, avoid causing ground load to cause the local grow of stress, to the unfavorable phenomenon of structure to the piping lane.
The load resisting capacity of the pipe gallery at the present stage needs to be improved, the load resisting effect under normal natural conditions can only be ensured, the structural rigidity and strength design is obviously insufficient corresponding to sudden conditions (such as earthquakes, explosions and other disasters), hidden dangers of pipeline scattering, structural collapse and the like exist, so that the later maintenance cost is increased, the operation of the whole public municipal administration is also influenced, and inconvenience is brought to the life of residents, some pipe gallery anti-seismic protection structures in the prior art have many defects, such as being not beneficial to the long-term construction of an underground comprehensive pipe gallery, or imperfect and unreasonable functional design, part of devices can not ensure the long-term durability, sometimes easily fail, some structural designs are complicated, some costs are overhigh, the damage to the gallery body caused by lateral transverse loads can be simultaneously generated around the comprehensive pipe gallery structure in some areas, and the later maintenance cost for the use of the underground pipe gallery can be increased, the service life of the underground pipe gallery is shortened, so that a reasonable damping protection structure for eliminating the damage of the load to the pipe gallery is necessarily constructed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem that exists, the utility model provides an utility tunnel with multidirectional shock attenuation support function can show and increase the multi-direction shock attenuation shock resistance and the bearing support ability of utility tunnel structure, and the upper portion antidetonation strengthening and supporting component, the lateral part antidetonation strengthening and supporting component that set up simultaneously can show the whole bearing support ability of reinforcing utility tunnel structure in shock attenuation power consumption, the utility model discloses the design that has sufficient structural rigidity intensity and antidetonation shock attenuation ability solves existing utility tunnel structure antidetonation protection incomplete, resists the load vibrations and destroys the ability weak and bear the insufficient technical leak of support.
In order to realize the purpose, the utility model discloses a technical scheme be:
an underground comprehensive pipe gallery with multidirectional damping and supporting functions comprises a comprehensive pipe gallery, a gravel bearing base layer, a backfill tamped soil layer, pseudo-ginseng ash soil, a concrete mortar protective shell, an internal connecting plate and an external connecting plate, the lower part of the comprehensive pipe gallery is provided with a gravel bearing base layer, the upper part and two sides of the comprehensive pipe gallery are provided with internal connecting plates, the outer sides of the internal connecting plates are provided with external connecting plates, an upper anti-seismic reinforced supporting member is arranged above the space between the internal connecting plate and the external connecting plate, lateral anti-seismic reinforced supporting members are arranged at two sides between the internal connecting plate and the external connecting plate, the bottom ends of the internal connecting plate and the external connecting plate are connected through a lower connecting plate, and a concrete mortar protective shell is arranged on the outer side of the external connecting plate, pseudo-ginseng gray soil is arranged on two sides of the concrete mortar protective shell, and a backfill tamped soil layer is arranged on the upper parts of the pseudo-ginseng gray soil and the concrete mortar protective shell.
Furthermore, the upper anti-seismic reinforced support member is formed by connecting a first buffer damping plate and a second buffer damping plate through a fastener, the first buffer damping plate is formed by alternately connecting a wave crest energy consumption plate and a wave trough energy consumption plate, the second buffer damping plate is formed by alternately connecting a wave crest energy consumption plate and a wave trough energy consumption plate, the wave crest energy consumption plate of the first buffer damping plate and the wave trough energy consumption plate of the second buffer damping plate are oppositely arranged, and an energy consumption cavity is formed between the wave crest energy consumption plate and the wave trough energy consumption plate.
Furthermore, the wave trough energy dissipation plate of the first buffering damping plate and the wave crest energy dissipation plate of the second buffering damping plate are arranged in a tangent mode, and a fastening piece is arranged at a tangent position and penetrates through the wave trough energy dissipation plate of the first buffering damping plate and the wave crest energy dissipation plate of the second buffering damping plate to connect the wave trough energy dissipation plate and the wave crest energy dissipation plate.
Furthermore, the lateral anti-seismic reinforcing and supporting member is formed by connecting a third buffering damping plate and a fourth buffering damping plate through a fastener, the third buffering damping plate is formed by alternately connecting a wave crest energy consumption plate and a wave trough energy consumption plate, the fourth buffering damping plate is formed by alternately connecting a wave crest energy consumption plate and a wave trough energy consumption plate, the wave crest energy consumption plate of the third buffering damping plate and the wave crest energy consumption plate of the fourth buffering damping plate are oppositely arranged, and an energy consumption cavity is formed between the wave crest energy consumption plate of the third buffering damping plate and the wave crest energy consumption plate of the fourth buffering damping plate.
Furthermore, the wave trough energy dissipation plate of the third buffering damping plate and the wave trough energy dissipation plate of the fourth buffering damping plate are arranged in a tangent mode, and a fastening piece is arranged at a tangent position and penetrates through the wave trough energy dissipation plate of the third buffering damping plate and the wave trough energy dissipation plate of the fourth buffering damping plate to connect the wave trough energy dissipation plate and the fourth buffering damping plate.
Furthermore, a bearing filling reinforcing layer is arranged between the internal connecting plate and the upper anti-seismic reinforcing and supporting member, a bearing filling reinforcing layer is arranged between the external connecting plate and the upper anti-seismic reinforcing and supporting member, a bearing filling reinforcing layer is arranged between the internal connecting plate and the lateral anti-seismic reinforcing and supporting member, and a bearing filling reinforcing layer is arranged between the external connecting plate and the lateral anti-seismic reinforcing and supporting member.
Furthermore, the internal connecting plate, the external connecting plate and the upper anti-seismic reinforcing support member are connected through a connecting piece, and fixing nuts are arranged at two ends of the connecting piece for fixing; the internal connecting plate, the external connecting plate and the lateral anti-seismic reinforcing and supporting member are connected through the connecting piece, and fixing nuts are arranged at two ends of the connecting piece for fixing.
Further, the first buffer damping plate, the second buffer damping plate, the third buffer damping plate and the fourth buffer damping plate are all made of low-yield-point energy-consumption steel plates.
Furthermore, the bearing filling reinforcing layer is made of damping materials added with fine sand, and the damping materials are made of polyvinyl alcohol and styrene-butadiene latex through mixing.
Furthermore, the internal connection plate, the external connection plate, the lower connection plate, the connecting piece, the fixing nut, the first buffering damping plate, the second buffering damping plate, the fastening piece, the third buffering damping plate and the fourth buffering damping plate are subjected to anti-corrosion treatment.
The utility model has the advantages that: can obviously increase the multi-directional shock absorption and shock resistance and bearing and supporting capacity of the underground comprehensive pipe gallery structure, can reduce the damage of multi-directional loads to the comprehensive pipe gallery structure, when the ground load and the lateral transverse load impact the comprehensive pipe gallery structure, the arranged upper shock absorption strengthening and supporting component, the lateral shock absorption strengthening and supporting component and the bearing and filling strengthening layer can mutually extrude and consume energy, the arranged energy-consuming cavities can greatly dissipate the energy transmitted to the comprehensive pipe gallery structure by the ground load and the lateral transverse load, the upper shock absorption strengthening and supporting component and the lateral shock absorption strengthening and supporting component can obviously strengthen the integral bearing and supporting capacity of the comprehensive pipe gallery structure while absorbing and consuming energy, and avoid the occurrence of the condition that the shock load in all directions around the comprehensive pipe gallery structure damages the comprehensive pipe gallery structure, the utility model can form a complete shock absorption and protection layer for the comprehensive pipe gallery structure, can effectively resist utility tunnel structure top ground load destroy and reduce the vibration energy that the lateral load of side transmitted the structure around, can be in the proruption situation if meet destruction to utility tunnel structure that significantly reduces when disasters such as earthquake, explosion, have sufficient structural rigidity and intensity design, solve many shortcomings of many utility tunnel structures antidetonation protection among the prior art, be favorable to the long-term construction of utility tunnel structure.
Drawings
Figure 1 is the utility model discloses utility tunnel schematic diagram with multidirectional shock attenuation support function.
FIG. 2 is a schematic view of an upper seismic enhancement support member.
FIG. 3 is a schematic view of a lateral seismic reinforcing support member.
In the figure: 1 is a comprehensive pipe gallery; 2 is a gravel load-bearing base layer; 3, backfilling and tamping a soil layer; 4 is notoginseng gray soil; 5 is a concrete mortar protective shell; 6 is an internal connecting plate; 7 is an external connecting plate; 8 is a lower connecting plate; 9 is a connecting piece; 10 is a fixed nut; 11 is a bearing filling reinforced layer; 12 is an upper anti-seismic reinforced supporting member; 13 is a lateral anti-seismic reinforced supporting component; 14 is a first buffer damping plate; 15 is a second buffer damping plate; 16 is a fastener; 17 is a wave crest energy consumption plate; 18 is a wave trough energy consumption plate; 19 is an energy consumption cavity; 20 is a third buffer damping plate; and 21, a fourth buffer damping plate.
Detailed Description
For further explanation of the present invention, the following detailed description of the present invention is provided with reference to the drawings and examples, which should not be construed as limiting the scope of the present invention.
Example (b): as shown in fig. 1 to 3, an underground comprehensive pipe gallery with multidirectional damping and supporting functions comprises a comprehensive pipe gallery 1, a gravel bearing base layer 2, a backfill tamped soil layer 3, pseudo-ginseng ash 4, a concrete mortar protective shell 5, an internal connecting plate 6, an external connecting plate 7, a lower connecting plate 8, a connecting piece 9, a fixing nut 10, a bearing filling reinforcing layer 11, an upper anti-seismic reinforcing and supporting member 12, a side anti-seismic reinforcing and supporting member 13, a first buffer damping plate 14, a second buffer damping plate 15, a fastening piece 16, a wave crest energy consumption plate 17, a wave trough energy consumption plate 18, an energy consumption cavity 19, a third buffer damping plate 20 and a fourth buffer damping plate 21;
in the structure of the underground comprehensive pipe gallery with the multidirectional damping and supporting functions, a gravel bearing base layer 2 is arranged below a comprehensive pipe gallery 1, internal connecting plates 6 are arranged at the upper end and two sides of the comprehensive pipe gallery 1, external connecting plates 7 are arranged at the upper end and two sides of the internal connecting plates 6, lower connecting plates 8 are arranged to connect the bottom ends of the internal connecting plates 6 and the bottom ends of the external connecting plates 7, an upper anti-seismic reinforcing and supporting member 12 is arranged above the internal connecting plates 6 and the external connecting plates 7, lateral anti-seismic reinforcing and supporting members 13 are arranged at two sides between the internal connecting plates 6 and the external connecting plates 7, a concrete mortar protective shell 5 is arranged outside the external connecting plates 7, pseudo-ginseng ash 4 is arranged around the concrete mortar protective shell 5, a backfill tamping soil layer 3 is arranged above the pseudo-ginseng ash 4 and the concrete mortar protective shell 5, and a first damping plate 14, The second buffer damping plate 15 is formed by alternately connecting peak energy consumption plates 17 and valley energy consumption plates 18, the upper anti-seismic reinforcing support member 12 is formed by combining a first buffer damping plate 14, a second buffer damping plate 15 and fasteners 16, wherein the peak energy consumption plate 17 of the first buffer damping plate 14 and the valley energy consumption plate 18 of the second buffer damping plate 15 are oppositely arranged, energy consumption cavities 19 are formed between the peak energy consumption plate 17 and the valley energy consumption plate 18, the valley energy consumption plate 18 of the first buffer damping plate 14 and the peak energy consumption plate 17 of the second buffer damping plate 15 are tangentially arranged, the fasteners 16 penetrate through the valley energy consumption plate 18 of the first buffer damping plate 14 and the peak energy consumption plate 17 of the second buffer damping plate 15 to connect the two, the third buffer damping plate 20 and the fourth buffer damping plate 21 are formed by alternately connecting the peak energy consumption plates 17 and the valley energy consumption plates 18, the lateral anti-seismic reinforcing and supporting member 13 is formed by combining a third buffer damping plate 20, a fourth buffer damping plate 21 and a fastening member 16, wherein a peak energy consumption plate 17 of the third buffer damping plate 20 and a peak energy consumption plate 17 of the fourth buffer damping plate 21 are oppositely arranged, an energy consumption cavity 19 is formed between the peak energy consumption plate 17 of the third buffer damping plate 20 and the peak energy consumption plate 17 of the fourth buffer damping plate 21, a trough energy consumption plate 18 of the third buffer damping plate 20 and a trough energy consumption plate 18 of the fourth buffer damping plate 21 are tangentially arranged, the fastening member 16 penetrates through the trough energy consumption plate 18 of the third buffer damping plate 20 and the trough energy consumption plate 18 of the fourth buffer damping plate 21 to connect the third buffer damping plate 20 and the fourth buffer damping plate 21, a bearing filling reinforcing layer 11 is arranged in a region except the energy consumption cavity 19 in a structure formed by the inner connecting plate 6, the outer connecting plate 7 and the lower connecting plate 8, set up a plurality of connecting pieces 9 and pass internal connection board 6, external connection board 7 and upper portion antidetonation and strengthen supporting component 12 and connect the three to set up fixation nut 10 at the both ends of connecting piece 9 and fix, set up a plurality of connecting pieces 9 and pass internal connection board 6, external connection board 7 and lateral part antidetonation and strengthen supporting component 13 and connect the three, and set up fixation nut 10 at the both ends of connecting piece 9 and fix.
The internal connection plate 6, the external connection plate 7, the lower connection plate 8, the connecting piece 9, the fixing nut 10, the first buffer damping plate 14, the second buffer damping plate 15, the fastener 16, the third buffer damping plate 20 and the fourth buffer damping plate 21 are all subjected to anti-corrosion treatment. The bearing filling reinforced layer 11 is made by adding damping material into fine sand, and the damping material is made by mixing polyvinyl alcohol and styrene-butadiene latex. The first buffer damping plate 14, the second buffer damping plate 15, the third buffer damping plate 20 and the fourth buffer damping plate 21 are made of low-yield-point energy-consuming steel plates.
The wave crest dissipative plate 17 of the first buffer damping plate 14 and the wave trough dissipative plate 18 of the second buffer damping plate 15 are oppositely arranged, dissipative cavities 19 are formed between the wave crest dissipative plate 17 and the wave trough dissipative plate 18, and the wave trough dissipative plate 18 of the first buffer damping plate 14 and the wave crest dissipative plate 17 of the second buffer damping plate 15 are tangentially arranged.
The wave crest energy dissipation plate 17 of the third buffer damping plate 20 and the wave crest energy dissipation plate 17 of the fourth buffer damping plate 21 are oppositely arranged, an energy dissipation cavity 19 is formed between the wave crest energy dissipation plate 17 of the third buffer damping plate 20 and the wave crest energy dissipation plate 17 of the fourth buffer damping plate 21, and the wave trough energy dissipation plate 18 of the third buffer damping plate 20 and the wave trough energy dissipation plate 18 of the fourth buffer damping plate 21 are tangentially arranged.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an utility tunnel with multidirectional shock attenuation support function which characterized in that: comprises a comprehensive pipe gallery (1), a gravel bearing base layer (2), a backfilled and compacted soil layer (3), pseudo-ginseng ash soil (4), a concrete mortar protective shell (5), an internal connecting plate (6) and an external connecting plate (7), wherein the gravel bearing base layer (2) is arranged at the lower part of the comprehensive pipe gallery (1), the internal connecting plate (6) is arranged at the upper part and two sides of the comprehensive pipe gallery (1), the external connecting plate (7) is arranged at the outer side of the internal connecting plate (6), an upper anti-seismic reinforcing supporting member (12) is arranged above the space between the internal connecting plate (6) and the external connecting plate (7), a lateral reinforcing supporting member (13) is arranged at two sides between the internal connecting plate (6) and the external connecting plate (7), the bottom ends of the internal connecting plate (6) and the external connecting plate (7) are connected through a lower connecting plate (8), and the concrete mortar protective shell (5), pseudo-ginseng gray soil (4) is arranged on two sides of the concrete mortar protective shell (5), and a backfill tamped soil layer (3) is arranged on the upper portions of the pseudo-ginseng gray soil (4) and the concrete mortar protective shell (5).
2. The utility tunnel with multidirectional shock attenuation support function of claim 1, its characterized in that: the upper anti-seismic reinforcing support member (12) is formed by connecting a first buffering damping plate (14) and a second buffering damping plate (15) through a fastener (16), the first buffering damping plate (14) is formed by alternately connecting a peak energy consumption plate (17) and a trough energy consumption plate (18), the second buffering damping plate (15) is formed by alternately connecting the peak energy consumption plate (17) and the trough energy consumption plate (18), the peak energy consumption plate (17) of the first buffering damping plate (14) and the trough energy consumption plate (18) of the second buffering damping plate (15) are oppositely arranged, and an energy consumption cavity (19) is formed between the peak energy consumption plate (17) and the trough energy consumption plate (18).
3. The utility tunnel with multidirectional shock attenuation support function of claim 2, its characterized in that: the wave trough energy dissipation plate (18) of the first buffering damping plate (14) and the wave crest energy dissipation plate (17) of the second buffering damping plate (15) are arranged in a tangent mode, and a fastening piece (16) is arranged at the tangent position and penetrates through the wave trough energy dissipation plate (18) of the first buffering damping plate (14) and the wave crest energy dissipation plate (17) of the second buffering damping plate (15) to connect the wave trough energy dissipation plate (18) of the first buffering damping plate and the wave crest energy dissipation plate (17).
4. The utility tunnel with multidirectional shock attenuation support function of claim 1, its characterized in that: the lateral anti-seismic reinforcing and supporting member (13) is formed by connecting a third buffering damping plate (20) and a fourth buffering damping plate (21) through a fastener (16), the third buffering damping plate (20) is formed by alternately connecting a peak energy consumption plate (17) and a trough energy consumption plate (18), the fourth buffering damping plate (21) is formed by alternately connecting the peak energy consumption plate (17) and the trough energy consumption plate (18), the peak energy consumption plate (17) of the third buffering damping plate (20) and the peak energy consumption plate (17) of the fourth buffering damping plate (21) are oppositely arranged, and an energy consumption cavity (19) is formed between the peak energy consumption plate (17) of the third buffering damping plate (20) and the peak energy consumption plate (17) of the fourth buffering damping plate (21).
5. The utility tunnel with multidirectional shock attenuation support function of claim 4, characterized in that: the wave trough energy dissipation plate (18) of the third buffer damping plate (20) and the wave trough energy dissipation plate (18) of the fourth buffer damping plate (21) are arranged in a tangent mode, and a fastening piece (16) is arranged at the tangent position and penetrates through the wave trough energy dissipation plate (18) of the third buffer damping plate (20) and the wave trough energy dissipation plate (18) of the fourth buffer damping plate (21) to connect the wave trough energy dissipation plate (18) of the third buffer damping plate and the wave trough energy dissipation plate.
6. The utility tunnel with multidirectional shock attenuation support function of claim 1, its characterized in that: a bearing filling reinforcing layer (11) is arranged between the internal connecting plate (6) and the upper anti-seismic reinforcing and supporting member (12), a bearing filling reinforcing layer (11) is arranged between the external connecting plate (7) and the upper anti-seismic reinforcing and supporting member (12), a bearing filling reinforcing layer (11) is arranged between the internal connecting plate (6) and the lateral anti-seismic reinforcing and supporting member (13), and a bearing filling reinforcing layer (11) is arranged between the external connecting plate (7) and the lateral anti-seismic reinforcing and supporting member (13).
7. The utility tunnel with multidirectional shock attenuation support function of claim 1, its characterized in that: the internal connecting plate (6), the external connecting plate (7) and the upper anti-seismic reinforcing support member (12) are connected through a connecting piece (9), and fixing nuts (10) are arranged at two ends of the connecting piece (9) for fixing; the internal connecting plate (6), the external connecting plate (7) and the lateral anti-seismic reinforcing and supporting member (13) are connected through a connecting piece (9), and fixing nuts (10) are arranged at two ends of the connecting piece (9) for fixing.
8. The utility tunnel with multidirectional shock attenuation support function of claim 2, its characterized in that: the first buffer damping plate (14) and the second buffer damping plate (15) are both made of low-yield-point energy-consumption steel plates.
9. The utility tunnel with multidirectional shock attenuation support function of claim 4, characterized in that: the third buffer damping plate (20) and the fourth buffer damping plate (21) are both made of low-yield-point energy-consumption steel plates.
10. The utility tunnel with multidirectional shock attenuation support function of claim 1, its characterized in that: the anti-corrosion damping device is characterized in that the inner connecting plate (6), the outer connecting plate (7), the lower connecting plate (8), the connecting piece (9), the fixing nut (10), the first damping plate (14), the second damping plate (15), the fastening piece (16), the third damping plate (20) and the fourth damping plate (21) are subjected to anti-corrosion treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920892974.3U CN212427194U (en) | 2019-06-14 | 2019-06-14 | Utility tunnel with multidirectional shock attenuation support function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920892974.3U CN212427194U (en) | 2019-06-14 | 2019-06-14 | Utility tunnel with multidirectional shock attenuation support function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212427194U true CN212427194U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920892974.3U Expired - Fee Related CN212427194U (en) | 2019-06-14 | 2019-06-14 | Utility tunnel with multidirectional shock attenuation support function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212427194U (en) |
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2019
- 2019-06-14 CN CN201920892974.3U patent/CN212427194U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210129 Termination date: 20210614 |