CN220379136U - Pipeline connecting device for hydraulic engineering - Google Patents
Pipeline connecting device for hydraulic engineering Download PDFInfo
- Publication number
- CN220379136U CN220379136U CN202322025781.7U CN202322025781U CN220379136U CN 220379136 U CN220379136 U CN 220379136U CN 202322025781 U CN202322025781 U CN 202322025781U CN 220379136 U CN220379136 U CN 220379136U
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- connection
- lag
- pipeline
- seat
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- 230000001681 protective effect Effects 0.000 claims abstract description 45
- 230000008878 coupling Effects 0.000 claims description 13
- 238000010168 coupling process Methods 0.000 claims description 13
- 238000005859 coupling reaction Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 101100510617 Caenorhabditis elegans sel-8 gene Proteins 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 101100074187 Caenorhabditis elegans lag-1 gene Proteins 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 101100510615 Caenorhabditis elegans lag-2 gene Proteins 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model provides a pipeline connecting device for hydraulic engineering, which is suitable for the technical field of pipeline connecting devices and aims to provide the pipeline connecting device for hydraulic engineering, and the scheme adopted is as follows: the pipeline comprises a first pipeline, a second pipeline, a first protective sleeve, a second protective sleeve, a first protective shell, a second protective shell, a connecting mechanism and a supporting mechanism, wherein the second pipeline is attached to the side face of the first pipeline; the utility model is also applicable to the field of pipe connection devices.
Description
Technical Field
The utility model relates to the technical field of pipeline connecting devices, in particular to a pipeline connecting device for hydraulic engineering.
Background
In the hydraulic engineering construction process, need connect the runner pipe way, current hydraulic engineering connected mode is, laminate two runner pipes, the bolt passes the flange hole of runner pipe, screw up the bolt, the welded mode of reuse is sealed joint gap department, prevent the runner pipe in-process of using, the circulating liquid can leak from gap department, when using the sealed gap of welding mode, cause wearing and tearing to the runner pipe easily, serious can lead to the runner pipe way unable resume use, simultaneously, current hydraulic engineering connected mode is inconvenient with two runner pipes quick separation, unable quick maintenance of carrying out, the life of runner pipe has been shortened, hydraulic engineering pipe connection's efficiency has been reduced.
Therefore, it is necessary to provide a new pipeline connecting device for hydraulic engineering to solve the above technical problems.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a pipeline connecting device for hydraulic engineering.
The pipeline connecting device for hydraulic engineering provided by the utility model comprises: first pipeline, second pipeline, first lag, second lag, coupling mechanism and supporting mechanism, first pipeline side laminating has the second pipeline, first lag and second pipeline flange position symmetry are installed to first pipeline and second lag, first lag surface symmetry laminating has first lag and second lag, four coupling mechanism are installed to first lag and second lag side symmetry fixed mounting, supporting mechanism is installed to second lag lower surface symmetry, hugs closely first pipeline and second pipeline, places first lag and second lag in first pipeline and second pipeline flange position again, and the bolt passes the flange hole, places first lag and first pipeline and second pipeline firm in connection with first lag, places first lag and second lag at first lag surface through coupling mechanism, and supporting mechanism supports second lag, supports first pipeline and second pipeline, and it is firm to carry out the second pipeline with first lag, and convenient the second pipeline is safeguarded simultaneously.
Preferably, the coupling mechanism includes first connecting seat, second connecting seat, limiting plate, lead screw and drive block, four first connecting seats of first protecting crust and second protecting crust side symmetry fixedly connected with and second connecting seat, the inside sliding connection of first connecting seat has the limiting plate, first connecting seat inner wall rotates and is connected with the lead screw, and lead screw surface and the inside meshing of limiting plate are connected, lead screw top fixedly connected with drive block is close to first protecting crust and second protecting crust each other, and first connecting seat is close to the second connecting seat, rotates the drive block, drives the lead screw and rotates at first connecting seat inner wall, and lead screw surface contact limiting plate is inside, sends into the second connecting seat with the limiting plate inside.
Preferably, the coupling mechanism still includes guide bar, connecting block and first spring, second connecting seat side symmetry fixedly connected with guide bar, second connecting seat inner wall symmetry sliding connection has the connecting block, and guide bar surface and the inside cross-under of connecting block, guide bar surface cover is equipped with first spring, and first spring both sides and guide bar and connecting block fixed surface are connected, and the pulling connecting block drives the connecting block and keeps away from each other, and the connecting block is inside to slide along the guide bar surface, and the connecting block extrudees first spring shrink, and the limiting plate gets into the inside back of second connecting seat completely, and the connecting block is released, and first spring resets and opens, sends into the connecting block inside the limiting plate, with first connecting seat and second connecting seat quick connect.
Preferably, the supporting mechanism comprises a first supporting seat, a second supporting seat, a first through hole, a second through hole and a through rod, the first supporting seat is symmetrically and fixedly connected to the bottom of the second protective shell, the second supporting seat is arranged below the first supporting seat, the first through hole is symmetrically formed in the inner wall of the first supporting seat, the second through hole is symmetrically formed in the second supporting seat, the through rod is arranged in the first through hole and the second through hole in a penetrating way, the second supporting seat is close to the first supporting seat, the second through hole is aligned with the first through hole in a penetrating way, the through rod penetrates through the first through hole and the second through hole, the first supporting seat and the second supporting seat are firmly connected, the second protective shell is stably supported, and the second protective shell is prevented from shaking.
Preferably, the supporting mechanism further comprises a clamping block and a second spring, the clamping block is symmetrically and slidingly connected inside the cross-connection rod, the second spring is symmetrically and fixedly connected to the inner wall of the cross-connection rod, one side of the second spring is fixedly connected with the surface of the clamping block, when the cross-connection rod passes through the first cross-connection hole and the second cross-connection hole, the clamping block is extruded by the inner wall of the first cross-connection hole and the inner wall of the second cross-connection hole, the clamping block is sent into the cross-connection rod, the clamping block extrudes the second spring to shrink, after the cross-connection rod completely passes through the first cross-connection hole and the second cross-connection hole, the second spring is reset to be opened, the clamping block is moved out of the cross-connection rod, and the first supporting seat and the second supporting seat are firmly connected.
Preferably, the connecting piece has been seted up to first lag and second lag surface symmetry, first lag and second lag surface symmetry fixedly connected with rectangle groove, and the mounting hole has been seted up to rectangle groove surface symmetry, the bolt passes first pipeline, second pipeline, the flange hole on first lag and second lag surface, the bolt passes the mounting hole on rectangle groove surface, paste first lag and second lag again and tightly adhere to first lag surface, the rectangle groove passes the connecting piece, make things convenient for first lag and second lag fast assembly.
Preferably, the first protective sleeve and the second protective sleeve are made of rubber materials, the first protective sleeve and the second protective sleeve are in flexible contact with the surfaces of the first pipeline and the second pipeline, abrasion to the surfaces of the first pipeline and the second pipeline is reduced, and the tightness of the gap between the first pipeline and the second pipeline is improved.
Preferably, the first protecting shell and the second protecting shell are made of steel alloy, the steel alloy has high physical strength, meanwhile, the chemical property is stable, the steel alloy has high plasticity, and when the first protecting shell and the second protecting shell are extruded and collided, the first protecting shell and the second protecting shell cannot be easily sunken, so that the service lives of the first protecting shell and the second protecting shell are prolonged.
Compared with the related art, the pipeline connecting device for hydraulic engineering provided by the utility model has the following structure
The beneficial effects are that:
the utility model provides a pipeline connecting device for hydraulic engineering, which comprises:
1. through installation coupling mechanism and supporting mechanism, adopt mechanical mechanism to connect sealedly, the connection in-process can not damage the circulation pipeline, simultaneously, convenient quick split overhauls the maintenance to the circulation pipeline.
2. The first protective shell and the second protective shell are made of steel alloy, the steel alloy has high physical strength, meanwhile, the chemical property is stable, the steel alloy has high plasticity, and when the first protective shell and the second protective shell are extruded and collided, the steel alloy cannot be depressed easily, so that the service lives of the first protective shell and the second protective shell are prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present utility model;
FIG. 2 is a schematic diagram of a separation structure according to the present utility model;
FIG. 3 is a schematic view of a connection mechanism according to the present utility model;
fig. 4 is a schematic structural diagram of a supporting mechanism according to the present utility model.
Reference numerals in the drawings: 1. a first pipe; 2. a second pipe; 3. a first protective sleeve; 4. a second protective sleeve; 5. a first protective shell; 6. a second protective shell; 7. a connecting mechanism; 71. a first connection base; 72. a second connecting seat; 73. a limiting plate; 74. a screw rod; 75. a driving block; 76. a guide rod; 77. a connecting block; 78. a first spring; 8. a support mechanism; 81. a first support base; 82. a second support base; 83. a first access hole; 84. a second access hole; 85. penetrating a connecting rod; 86. a clamping block; 87. a second spring; 9. a connecting piece; 10. rectangular grooves.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
Referring to fig. 1, 2, 3 and 4 in combination, the pipe connection device for hydraulic engineering includes: first pipeline 1, second pipeline 2, first lag 3, second lag 4, first lag 5, second lag 6, coupling mechanism 7 and supporting mechanism 8, first pipeline 1 side laminating has second pipeline 2, first lag 3 and second lag 4 are installed to first pipeline 1 and second pipeline 2 flange position symmetry, first lag 3 surface symmetry laminating has first lag 5 and second lag 6, four coupling mechanism 7 are installed to first lag 5 and second lag 6 side symmetry fixed mounting, supporting mechanism 8 is installed to second lag 6 lower surface symmetry, hugs closely first pipeline 1 and second pipeline 2, places first lag 3 and second lag 4 in first pipeline 1 and second pipeline 2 flange position, and the bolt passes the flange hole, places first lag 3 and first lag 5 and first pipeline 1 and second pipeline 2 firm in connection, places first lag 5 and second lag 6 at first lag 3, carries out coupling mechanism with second lag 7 through first lag 7, and carries out the coupling mechanism with second lag 1 and second lag 2, and carries out the firm connection with second lag 1 and second lag 8 simultaneously, and carries out the firm coupling mechanism with second lag 1 and second lag 2.
Embodiment one:
in the specific implementation process, as shown in fig. 2 and 3, the connection mechanism 7 includes a first connection seat 71, a second connection seat 72, a limiting plate 73, a screw rod 74 and a driving block 75, the side surfaces of the first protection casing 5 and the second protection casing 6 are symmetrically and fixedly connected with the four first connection seats 71 and the second connection seat 72, the limiting plate 73 is slidingly connected inside the first connection seat 71, the screw rod 74 is rotatably connected with the inner wall of the first connection seat 71, the surface of the screw rod 74 is in meshed connection with the inner wall of the limiting plate 73, the driving block 75 is fixedly connected at the top of the screw rod 74, the first protection casing 5 and the second protection casing 6 are mutually close to each other, the first connection seat 71 is close to the second connection seat 72, the driving block 75 is rotated to drive the screw rod 74 to rotate inside the inner wall of the first connection seat 71, the surface of the screw rod 74 contacts the inner wall of the limiting plate 73, and the limiting plate 73 is fed into the second connection seat 72.
Referring to fig. 3, the connection mechanism 7 further includes a guide rod 76, a connection block 77 and a first spring 78, the guide rod 76 is symmetrically and fixedly connected to the side surface of the second connection seat 72, the connection block 77 is symmetrically and slidingly connected to the inner wall of the second connection seat 72, the surface of the guide rod 76 is connected with the inside of the connection block 77 in a penetrating manner, the surface of the guide rod 76 is sleeved with the first spring 78, two sides of the first spring 78 are fixedly connected with the surface of the guide rod 76 and the surface of the connection block 77, the connection block 77 is pulled to drive the connection block 77 to move away from each other, the connection block 77 slides along the surface of the guide rod 76, the connection block 77 extrudes the first spring 78 to shrink, the connection block 77 is released after the limit plate 73 completely enters the inside of the second connection seat 72, the first spring 78 is reset to be opened, the connection block 77 is fed into the inside the limit plate 73, and the first connection seat 71 and the second connection seat 72 are quickly connected.
Referring to fig. 2 and 4, the supporting mechanism 8 includes a first supporting seat 81, a second supporting seat 82, a first through-connection hole 83, a second through-connection hole 84 and a through-connection rod 85, the bottom of the second protecting shell 6 is symmetrically and fixedly connected with the first supporting seat 81, the second supporting seat 82 is arranged below the first supporting seat 81, the first through-connection hole 83 is symmetrically formed in the inner wall of the first supporting seat 81, the second through-connection hole 84 is symmetrically formed in the second supporting seat 82, the through-connection rod 85 is connected in the first through-connection hole 83 and the second through-connection hole 84 in a penetrating manner, the second supporting seat 82 is close to the first supporting seat 81, the second through-connection hole 84 is aligned with the first through-connection hole 83 and the second through-connection hole 84, the first supporting seat 81 and the second supporting seat 82 are firmly connected, the second protecting shell 6 is stably supported, and the second protecting shell 6 is prevented from shaking.
Referring to fig. 4, the supporting mechanism 8 further includes a clamping block 86 and a second spring 87, the clamping block 86 is symmetrically and slidably connected inside the through-connection rod 85, the second spring 87 is symmetrically and fixedly connected to the inner wall of the through-connection rod 85, one side of the second spring 87 is fixedly connected to the surface of the clamping block 86, when the through-connection rod 85 passes through the first through-connection hole 83 and the second through-connection hole 84, the clamping block 86 is extruded by the inner walls of the first through-connection hole 83 and the second through-connection hole 84, the clamping block 86 is sent into the through-connection rod 85, the clamping block 86 extrudes the second spring 87 to shrink, and after the through-connection rod 85 completely passes through the first through-connection hole 83 and the second through-connection hole 84, the second spring 87 is reset to be opened, the clamping block 86 is moved out of the inside of the through-connection rod 85, and the first supporting seat 81 and the second supporting seat 82 are firmly connected.
Referring to fig. 1 and 2, the connecting piece 9 is symmetrically arranged on the surfaces of the first protecting shell 5 and the second protecting shell 6, the rectangular grooves 10 are symmetrically and fixedly connected on the surfaces of the first protecting sleeve 3 and the second protecting sleeve 4, mounting holes are symmetrically arranged on the surfaces of the rectangular grooves 10, bolts penetrate through the flange holes on the surfaces of the first pipeline 1, the second pipeline 2, the first protecting sleeve 3 and the second protecting sleeve 4, bolts penetrate through the mounting holes on the surfaces of the rectangular grooves 10, the first protecting shell 5 and the second protecting shell 6 are tightly attached to the surfaces of the first protecting sleeve 3, and the rectangular grooves 10 penetrate through the connecting piece 9, so that the first protecting sleeve 3 and the second protecting sleeve 4 can be assembled conveniently and quickly.
Referring to fig. 2, the first protective sleeve 3 and the second protective sleeve 4 are made of rubber materials, the first protective sleeve 3 and the second protective sleeve 4 are in flexible contact with the surfaces of the first pipeline 1 and the second pipeline 2, abrasion to the surfaces of the first pipeline 1 and the second pipeline 2 is reduced, and tightness of gaps of the first pipeline 1 and the second pipeline 2 is improved.
Embodiment two:
referring to fig. 2, the first and second protective cases 5 and 6 are made of a steel alloy, which has high physical strength, stable chemical properties, and high plasticity, and thus, when the first and second protective cases 5 and 6 are extruded and collided, the first and second protective cases 5 and 6 are not easily recessed, and the service lives of the first and second protective cases 5 and 6 are prolonged.
Working principle: when the pipeline connecting device for hydraulic engineering is used, the first pipeline 1 and the second pipeline 2 are tightly attached, the first protective sleeve 3 and the second protective sleeve 4 are placed at the flange positions of the first pipeline 1 and the second pipeline 2, bolts penetrate through flange holes, the first protective sleeve 3 and the first protective shell 5 are firmly connected with the first pipeline 1 and the second pipeline 2, the first protective shell 5 and the second protective shell 6 are placed on the surface of the first protective sleeve 3, the first protective shell 5 and the second protective shell 6 are fixedly connected through the connecting mechanism 7, the first protective shell 5 and the second protective shell 6 are mutually close, the first connecting seat 71 is close to the second connecting seat 72, the driving block 75 is rotated to drive the screw 74 to rotate on the inner wall of the first connecting seat 71, the surface of the screw 74 contacts the inside of the limiting plate 73, the limiting plate 73 is fed into the second connecting seat 72, the connecting block 77 is pulled to drive the connecting block 77 to be mutually far away, the inside of the connecting block 77 slides along the surface of the guide rod 76, the connecting block 77 extrudes the first spring 78 to shrink, the limiting plate 73 completely enters the inside of the second connecting seat 72, then the connecting block 77 is released, the first spring 78 is reset and expanded, the connecting block 77 is sent into the inside of the limiting plate 73, the first connecting seat 71 and the second connecting seat 72 are quickly connected, the supporting mechanism 8 supports the second protective shell 6, the second supporting seat 82 is close to the first supporting seat 81, the second through hole 84 is aligned with the first through hole 83, the through rod 85 passes through the first through hole 83 and the second through hole 84, the first supporting seat 81 and the second supporting seat 82 are firmly connected, the second protective shell 6 is stably supported, the second protective shell 6 is prevented from shaking, when the through rod 85 passes through the first through hole 83 and the second through hole 84, the clamping block 86 is extruded by the inner walls of the first through hole 83 and the second through hole 84, the clamping block 86 is sent into the penetrating rod 85, the clamping block 86 extrudes the second spring 87 to shrink, after the penetrating rod 85 completely penetrates through the first penetrating hole 83 and the second penetrating hole 84, the second spring 87 resets and opens, the clamping block 86 is moved out of the penetrating rod 85, the first supporting seat 81 and the second supporting seat 82 are firmly connected, and meanwhile the first pipeline 1 and the second pipeline 2 are conveniently detached for maintenance.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, and all equivalent structures or equivalent flow modifications which may be made by the teachings of the present utility model and the accompanying drawings or which may be directly or indirectly employed in other related art are within the scope of the utility model.
Claims (8)
1. The utility model provides a pipeline connecting device for hydraulic engineering which characterized in that includes: first pipeline (1), second pipeline (2), first lag (3), second lag (4), first lag (5), second lag (6), coupling mechanism (7) and supporting mechanism (8), first pipeline (1) side laminating has second pipeline (2), first lag (3) and second lag (4) are installed to first pipeline (1) and second pipeline (2) flange position symmetry, first lag (3) surface symmetry laminating has first lag (5) and second lag (6), four coupling mechanism (7) are installed to first lag (5) and second lag (6) side symmetry fixed mounting, supporting mechanism (8) are installed to second lag (6) lower surface symmetry.
2. The pipe connection device for hydraulic engineering according to claim 1, wherein the connection mechanism (7) comprises a first connection seat (71), a second connection seat (72), a limiting plate (73), a screw rod (74) and a driving block (75), four first connection seats (71) and second connection seats (72) are symmetrically and fixedly connected to the sides of the first protection casing (5) and the second protection casing (6), the limiting plate (73) is slidingly connected to the inside of the first connection seat (71), the screw rod (74) is rotatably connected to the inner wall of the first connection seat (71), the surface of the screw rod (74) is connected with the inner engagement of the limiting plate (73), and the driving block (75) is fixedly connected to the top of the screw rod (74).
3. The pipe connection device for hydraulic engineering according to claim 2, wherein the connection mechanism (7) further comprises a guide rod (76), a connection block (77) and a first spring (78), the guide rod (76) is symmetrically and fixedly connected to the side face of the second connection seat (72), the connection block (77) is symmetrically and slidingly connected to the inner wall of the second connection seat (72), the surface of the guide rod (76) is connected with the inside of the connection block (77) in a penetrating way, the surface of the guide rod (76) is sleeved with the first spring (78), and two sides of the first spring (78) are fixedly connected with the surfaces of the guide rod (76) and the connection block (77).
4. The pipe connection device for hydraulic engineering according to claim 1, wherein the supporting mechanism (8) comprises a first supporting seat (81), a second supporting seat (82), a first through-connection hole (83), a second through-connection hole (84) and a through-connection rod (85), the first supporting seat (81) is symmetrically and fixedly connected to the bottom of the second protecting shell (6), the second supporting seat (82) is arranged below the first supporting seat (81), the first through-connection hole (83) is symmetrically formed in the inner wall of the first supporting seat (81), the second through-connection hole (84) is symmetrically formed in the second supporting seat (82), and the through-connection rod (85) is penetrated into the first through-connection hole (83) and the second through-connection hole (84).
5. The pipe connection device for hydraulic engineering according to claim 4, wherein the supporting mechanism (8) further comprises a clamping block (86) and a second spring (87), the clamping block (86) is symmetrically and slidingly connected inside the through connection rod (85), the second spring (87) is symmetrically and fixedly connected to the inner wall of the through connection rod (85), and one side of the second spring (87) is fixedly connected with the surface of the clamping block (86).
6. The pipeline connecting device for hydraulic engineering according to claim 1, wherein the connecting piece (9) is symmetrically arranged on the surfaces of the first protecting shell (5) and the second protecting shell (6), rectangular grooves (10) are symmetrically and fixedly connected on the surfaces of the first protecting sleeve (3) and the second protecting sleeve (4), and mounting holes are symmetrically arranged on the surfaces of the rectangular grooves (10).
7. The pipe connection device for hydraulic engineering according to claim 1, characterized in that the first and second protective sleeves (3, 4) are made of rubber material.
8. The pipe connection for hydraulic engineering according to claim 1, characterized in that the first and second protective shells (5, 6) are made of steel alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025781.7U CN220379136U (en) | 2023-07-31 | 2023-07-31 | Pipeline connecting device for hydraulic engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322025781.7U CN220379136U (en) | 2023-07-31 | 2023-07-31 | Pipeline connecting device for hydraulic engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220379136U true CN220379136U (en) | 2024-01-23 |
Family
ID=89571770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322025781.7U Active CN220379136U (en) | 2023-07-31 | 2023-07-31 | Pipeline connecting device for hydraulic engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220379136U (en) |
-
2023
- 2023-07-31 CN CN202322025781.7U patent/CN220379136U/en active Active
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