CN210322189U - Sealing detection device for steel-plastic adapter - Google Patents
Sealing detection device for steel-plastic adapter Download PDFInfo
- Publication number
- CN210322189U CN210322189U CN201921237568.XU CN201921237568U CN210322189U CN 210322189 U CN210322189 U CN 210322189U CN 201921237568 U CN201921237568 U CN 201921237568U CN 210322189 U CN210322189 U CN 210322189U
- Authority
- CN
- China
- Prior art keywords
- shaped
- column
- lifting
- hydraulic cylinder
- lifting plate
- 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.)
- Expired - Fee Related
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 47
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 title claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000009423 ventilation Methods 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 abstract description 43
- 239000010959 steel Substances 0.000 abstract description 43
- 210000001503 joint Anatomy 0.000 abstract description 19
- 230000001360 synchronised effect Effects 0.000 abstract description 10
- 230000003028 elevating effect Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000003032 molecular docking Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a steel is moulded crossover sub's sealed detection device, including supporting baseplate, basin, elevating system, fixture and post of ventilating, the basin sets up on supporting baseplate's last plane, and elevating system includes hydraulic cylinder and lifter plate, and fixture includes centre gripping initiative end and centre gripping passive end, and centre gripping initiative end and centre gripping passive end set up the last plane both ends at the lifter plate relatively, and the centre gripping initiative end includes first L shape unable adjustment base, the tight pneumatic cylinder in top and butt joint post, and the passive end of centre gripping includes second L shape unable adjustment base, adjusts stay tube and regulation screw thread post. The detection device can realize synchronous independent jacking of the two plastic steel conversion joints by synchronous independent extension of the two jacking hydraulic cylinders, and further avoid the phenomenon that sealing detection cannot be smoothly carried out due to the fact that the lengths of the two plastic steel conversion joints are different, so that synchronous sealing detection of the double plastic steel conversion joints is really realized.
Description
Technical Field
The utility model relates to a steel is moulded crossover sub's sealed detection device.
Background
In the erection of the plastic steel conversion joint, the plastic steel conversion joint is commonly used for butt joint of pipelines. In the production process of the plastic steel conversion joint, in order to ensure the sealing performance of the plastic steel conversion joint, the sealing detection of the plastic steel conversion joint needs to be carried out before the plastic steel conversion joint leaves a factory. In the existing plastic steel conversion joint detection equipment, a single hydraulic cylinder is often adopted for carrying out single plastic steel conversion joint jacking detection, the detection efficiency is low in the mode, in order to improve the plastic steel conversion joint detection efficiency, a synchronous detection mode of two plastic steel conversion joints can be adopted for detection, but due to the limitation of the production process of the plastic steel conversion joints, the lengths of the two plastic steel conversion joints for carrying out synchronous detection cannot be accurately equal, so that when one hydraulic cylinder drives two butting columns to jack up the two plastic steel conversion joints, the phenomenon that one butting column is jacked up and the other butting column cannot jack up is often caused, the true double-joint synchronous detection cannot be realized, and the sealing detection efficiency of the plastic steel conversion joints cannot be really improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a steel is moulded crossover sub's sealed detection device, this detection device stretches out alone through two synchronous of pushing up tight pneumatic cylinders, can realize two plastic steel crossover sub's synchronous tight in top alone, has avoided then leading to sealed the measuring to carry out the emergence of phenomenon smoothly because of two plastic steel crossover sub length nonconformities to realized the synchronous sealed measuring of two plastic steel crossover sub in the true sense, can ensure then and improve plastic steel crossover sub detection efficiency.
The utility model provides a technical scheme that its technical problem adopted is: a sealing detection device of a steel-plastic adapter comprises a supporting base plate, a water tank, a lifting mechanism, a clamping mechanism and an air-permeable column, wherein a supporting leg is arranged on the lower plane of the supporting base plate, the water tank is arranged on the upper plane of the supporting base plate, the lifting mechanism comprises a lifting hydraulic cylinder and a lifting plate, the lifting hydraulic cylinder is respectively arranged on two sides of the water tank, the lifting plate is sleeved in the water tank, two ends of the lifting plate are respectively connected with piston rods of the lifting hydraulic cylinder positioned on two sides of the water tank through an L-shaped connecting plate, the clamping mechanism comprises a clamping driving end and a clamping driven end, the clamping driving end and the clamping driven end are oppositely arranged at two ends of the upper plane of the lifting plate, the clamping driving end comprises a first L-shaped fixing base, a jacking hydraulic cylinder and a butting column, the first L-shaped fixing base is arranged on the lifting plate, the two tightening hydraulic cylinders are arranged on the first L-shaped fixed base side by side, piston rods of the tightening hydraulic cylinders point to the middle of the water tank, the end part of a piston rod of each tightening hydraulic cylinder is provided with the butting column, the butting column is provided with a first sealing rubber pad, the clamping driven end comprises a second L-shaped fixed base, an adjusting support pipe and an adjusting threaded column, the second L-shaped fixed base is arranged on the lifting plate, the two adjusting threaded columns are horizontally arranged on an L-shaped connecting plate adjacent to the second L-shaped fixed base, the adjusting support pipe is sleeved on the adjusting threaded column, the movable end of the adjusting support pipe can be pressed on the second L-shaped fixed base through rotating the adjusting support pipe, the two ventilating columns are arranged on the second L-shaped fixed base side by side and are coaxial with the butting column, the air inlet pipe is arranged on the air ventilation column, the second sealing rubber pad is arranged on the opposite surface of the air ventilation column and the butt joint column, and the air outlet pipe opposite to the butt joint column is arranged on the air ventilation column.
Preferably, the first L-shaped fixing base and the second L-shaped fixing base are connected with the lifting plate in a bolt connection mode, the lifting plate is provided with oblong holes for moving, adjusting and positioning the first L-shaped fixing base and the second L-shaped fixing base, and the base of the jacking hydraulic cylinder is jacked on the corresponding L-shaped connecting plate.
Furthermore, two pipeline supporting seats are arranged on the lifting plate, two arc-shaped grooves are formed in each pipeline supporting seat, two adjusting threaded rods sleeved in the long round holes are arranged at the lower portions of the pipeline supporting seats, and adjusting blocks located between the pipeline supporting seats and the lifting plate are sleeved on the adjusting threaded rods.
Furthermore, two sides of the lifting hydraulic cylinder are respectively provided with a vertical guide rod, the upper end of each vertical guide rod penetrates through the L-shaped connecting plate, and the upper ends of the vertical guide rods are connected through a fixed connecting plate.
And the first L-shaped fixed base and the second L-shaped fixed base are respectively provided with a reinforcing rib.
The utility model has the advantages that: the utility model has simple structure and convenient use; the two jacking hydraulic cylinders synchronously and independently extend out, so that the two plastic steel conversion joints can be synchronously and independently jacked, the phenomenon that sealing detection cannot be smoothly carried out due to the fact that the lengths of the two plastic steel conversion joints are different is avoided, synchronous sealing detection of the double plastic steel conversion joints is truly realized, and the detection efficiency of the plastic steel conversion joints can be ensured to be improved; by adjusting the position of the second L-shaped fixed base, the plastic steel conversion joint detection with different lengths can be realized, and the application range of the device is further expanded; the pipeline can be kept horizontal in the detection process through the support of the pipeline supporting pad, so that the first sealing rubber pad and the second sealing rubber pad can be used for sealing two sides of the pipeline; through adjusting the support of screw rod to second L shape unable adjustment base, can improve second L shape unable adjustment base's resistance to deformation ability, then do benefit to the life who improves second L shape unable adjustment base.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some of the preferred embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the overall structure of the present invention;
FIG. 3 is an enlarged view of FIG. 1 at A;
FIG. 4 is an enlarged view of FIG. 1 at B;
FIG. 5 is a cross-sectional view of a vent post;
FIG. 6 is a schematic view of a pipeline support pad structure;
in the figure: 1 supporting baseplate, 11 landing legs, 2 water tanks, 31 lifting hydraulic cylinders, 32 lifting plates, 33L-shaped connecting plates, 34 vertical guide rods, 35 connecting plates, 411 first L-shaped fixed base, 4111 first reinforcing ribs, 412 tightly-pushing hydraulic cylinders, 413 butting columns, 4131 first sealing rubber pads, 421 second L-shaped fixed base, 4211 second reinforcing ribs, 422 adjusting supporting tubes, 423 adjusting threaded columns, 5 ventilation columns, 51 air inlet tubes, 52 air outlet tubes, 53 second sealing rubber pads, 6 pipeline supporting pads, 61 arc-shaped grooves, 62 adjusting threaded rods and 63 adjusting blocks.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following specific embodiments and accompanying drawings 1 to 6, and it is obvious that the described embodiments are only a part of the preferred embodiments of the present invention, and not all embodiments. Those skilled in the art can make similar variations without departing from the spirit of the invention, and therefore the invention is not limited by the specific embodiments disclosed below.
The utility model provides a sealing detection device (as shown in figure 1) of a steel-plastic adapter, which comprises a supporting bottom plate 1, a water tank 2, a lifting mechanism, a clamping mechanism and an air column 5, wherein the lower plane of the supporting bottom plate 1 is provided with a supporting leg 11, the water tank 2 is arranged on the upper plane of the supporting bottom plate 1, the lifting mechanism comprises a lifting hydraulic cylinder 31 and a lifting plate 32, two sides of the water tank 2 are respectively provided with the lifting hydraulic cylinder 31, the lifting plate 32 is sleeved in the water tank 2, two ends of the lifting plate 32 are respectively connected with piston rods of the lifting hydraulic cylinder 31 positioned at two sides of the water tank 2 through an L-shaped connecting plate 33, the lifting plate 32 can move up and down in the water tank 2 through the lifting hydraulic cylinder 31, the clamping mechanism comprises a clamping driving end and a clamping driven end, the clamping driving end and the clamping driven end are relatively arranged at two ends of the upper plane of the lifting plate 32, the clamping driving end comprises a first L-shaped fixed base 411, two jacking hydraulic cylinders 412 and a butting column 413, the first L-shaped fixed base 411 is arranged on the lifting plate 32, the two jacking hydraulic cylinders 412 are arranged on the first L-shaped fixed base 411 side by side, a piston rod of each jacking hydraulic cylinder 412 points to the middle of the water tank 2, the butting column 413 is arranged at the end part of a piston rod of each jacking hydraulic cylinder 412, the butting column 413 can reciprocate through the reciprocating motion of the jacking hydraulic cylinders 412, a first sealing rubber pad 4131 is arranged on the butting column 413, the clamping driven end comprises a second L-shaped fixed base 421, an adjusting supporting pipe 422 and an adjusting threaded column 423, the second L-shaped fixed base 421 is arranged on the lifting plate 32, the two adjusting threaded columns 423 are horizontally arranged on an L-shaped connecting plate 33 adjacent to the second L-shaped fixed base 421, the adjusting support tube 422 is sleeved on the adjusting threaded column 423, the movable end of the adjusting support tube 423 can be pressed against the second L-shaped fixed base 421 by rotating the adjusting support tube 423, the two ventilating columns 5 are arranged on the second L-shaped fixed base 421 side by side, the ventilating columns 5 are coaxial with the docking column 413, the ventilating columns 5 are provided with an air inlet pipe 51, the opposite surfaces of the ventilating columns 5 and the docking column 413 are provided with a second sealing rubber gasket 53, and the ventilating columns 5 are provided with an air outlet pipe 52 opposite to the docking column 413.
In practical application, in order to facilitate installation of the jacking hydraulic cylinder 412 and adjustment of the position of the second L-shaped fixed base 421, the first L-shaped fixed base 411 and the second L-shaped fixed base 421 are connected to the lifting plate 32 by means of bolts, the lifting plate 32 is provided with oblong holes 321 for moving, adjusting and positioning the first L-shaped fixed base 411 and the second L-shaped fixed base 421, and the bases of the jacking hydraulic cylinders 412 are jacked on the corresponding L-shaped connecting plates 33.
When the plastic steel conversion joint is detected, the plastic steel conversion joint is clamped between the butt-joint column 413 and the ventilation column 5 through the abutting action of the butt-joint column 413, in order to smoothly clamp and abut the plastic steel conversion joint by the butt-joint column 413 and the ventilation column 5, two pipeline supporting seats 6 are arranged on the lifting plate 32, two arc-shaped grooves 61 are arranged on each pipeline supporting seat 6, in order to adjust the supporting positions of the pipeline supporting seats 6, and in order to realize the auxiliary clamping and supporting of the pipeline supporting seats 6 on pipelines with different thicknesses, two adjusting threaded rods 62 sleeved in the long round holes 321 are arranged at the lower part of each pipeline supporting seat 6, and an adjusting block 63 positioned between the pipeline supporting seat 6 and the lifting plate 32 is sleeved on the adjusting threaded rods 62. In order to improve the stability of the up-and-down movement of the hydraulic lift cylinder 31, a vertical guide rod 34 is disposed on each side of the hydraulic lift cylinder 31, the upper end of the vertical guide rod 34 penetrates through the L-shaped connecting plate 33, and the upper ends of the vertical guide rods 34 are connected through a fixed connecting plate 35. In order to improve the overall structural strength of the first L-shaped fixing base 411 and the second L-shaped fixing base 421, a reinforcing rib is respectively arranged on the first L-shaped fixing base 411 and the second L-shaped fixing base 421, specifically, a first reinforcing rib 411 is arranged on the first L-shaped fixing base 411, and a second reinforcing rib 4211 is arranged on the second L-shaped fixing base 421.
In practical application, in order to apply different jacking pressures to joints with different thicknesses, the working pressure of the jacking hydraulic cylinder 412 can be designed to be adjustable, when the joints are thick, the jacking hydraulic cylinder 412 can work in a mode with higher working pressure, when the joints are thin, the jacking hydraulic cylinder 412 can work in a mode with lower working pressure, the working pressure setting technology of the jacking hydraulic cylinder 412 is a mature technology in the field, so that the detailed description of the specific implementation mode is not needed, further, in order to ensure the safe performance of detection work, the automatic air-off and automatic air-exhaust functions can be added to the air supply system of the ventilation column 5 in the device, after the detection is completed, the air supply system automatically shuts off air, so as to ensure the safe performance of detection, and the automatic air-off and automatic air-exhaust technologies in the field of pneumatic control are both mature technologies in the prior art, therefore, the specific embodiment of adding the automatic air-cut-off and automatic air-exhaust functions in the air supply system will not be described in detail herein.
Utilize the utility model discloses the flow that carries out the sealed detection of plastic steel crossover sub does: firstly, adjusting the positions of a second L-shaped fixed base 421 and a plastic-steel conversion joint supporting pad 6 according to the length and thickness of the plastic-steel conversion joint to be detected; secondly, putting the corresponding plastic steel conversion joint on the pipeline supporting pad 6; thirdly, starting the jacking hydraulic cylinder 412 to enable the butt column 413 and the ventilation column 5 to clamp the plastic steel conversion joint; fourthly, starting the lifting hydraulic cylinder 31 to enable the detected plastic steel conversion joint to enter the water in the water tank 2; fifthly, introducing gas into the ventilating column 5, and observing whether the plastic steel conversion joint in the water tank 2 leaks gas; sixthly, after the ventilation condition of the plastic steel conversion joint is observed, the air source of the ventilation column 5 is cut off, then the lifting hydraulic cylinder 31 lifts the plastic steel conversion joint from the water tank 2, then the abutting column 413 is retracted by the jacking hydraulic cylinder 412, workers classify the plastic steel conversion joint according to the ventilation condition observed just now, and then the detection of the plastic steel conversion joint is completed.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
The above description is provided for the preferred embodiments and examples of the present invention with reference to the accompanying drawings, but the present invention is not limited to the above embodiments and examples, and it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit of the present invention, and these modifications and variations should be construed as the protection scope of the present invention.
Claims (5)
1. A sealing detection device of a steel-plastic adapter comprises a supporting base plate and a water tank, wherein supporting legs are arranged on the lower plane of the supporting base plate, the water tank is arranged on the upper plane of the supporting base plate, and the sealing detection device is characterized by further comprising a lifting mechanism, a clamping mechanism and an air column, the lifting mechanism comprises a lifting hydraulic cylinder and a lifting plate, the lifting hydraulic cylinder is respectively arranged on two sides of the water tank, the lifting plate is sleeved in the water tank, two ends of the lifting plate are respectively connected with piston rods of the lifting hydraulic cylinders positioned on two sides of the water tank through an L-shaped connecting plate, the clamping mechanism comprises a clamping driving end and a clamping driven end, the clamping driving end and the clamping driven end are oppositely arranged at two ends of the upper plane of the lifting plate, and the clamping driving end comprises a first L-shaped fixing base, a jacking hydraulic cylinder and an abutting column, the first L-shaped fixed base is arranged on the lifting plate, the two jacking hydraulic cylinders are arranged on the first L-shaped fixed base side by side, piston rods of the jacking hydraulic cylinders point to the middle of the water tank, the end part of each piston rod of each jacking hydraulic cylinder is provided with one butting column, the butting columns are provided with a first sealing rubber pad, the clamping driven end comprises a second L-shaped fixed base, an adjusting support pipe and adjusting threaded columns, the second L-shaped fixed base is arranged on the lifting plate, the two adjusting threaded columns are horizontally arranged on the L-shaped connecting plate adjacent to the second L-shaped fixed base, the adjusting support pipe is sleeved on the adjusting threaded columns, the movable end of the adjusting support pipe can be pressed on the second L-shaped fixed base through rotating the adjusting support pipe, and the two ventilating columns are arranged on the second L-shaped fixed base side by side, the ventilation column is coaxial with the butt-joint column, an air inlet pipe is arranged on the ventilation column, a second sealing rubber pad is arranged on the opposite surface of the ventilation column and the butt-joint column, and an air outlet pipe opposite to the butt-joint column is arranged on the ventilation column.
2. The device for detecting the sealing of the steel-plastic adapter according to claim 1, wherein the first L-shaped fixing base and the second L-shaped fixing base are connected with the lifting plate by bolts, the lifting plate is provided with oblong holes for movably adjusting and positioning the first L-shaped fixing base and the second L-shaped fixing base, and the base of the jacking hydraulic cylinder is jacked on the corresponding L-shaped connecting plate.
3. The device for detecting the sealing of the steel-plastic crossover joint as claimed in claim 2, wherein two pipe supports are provided on the lifting plate, two arc-shaped grooves are provided on each pipe support, two adjusting threaded rods are provided on the lower portion of each pipe support and are sleeved in the oblong holes, and an adjusting block is sleeved on each adjusting threaded rod and is located between the pipe support and the lifting plate.
4. The device for detecting the sealing of the steel-plastic conversion joint as claimed in claim 3, wherein a vertical guide rod is respectively arranged at two sides of the lifting hydraulic cylinder, the upper end of the vertical guide rod penetrates through the L-shaped connecting plate, and the upper ends of the vertical guide rods are connected through a fixed connecting plate.
5. The device for detecting the sealing of the steel-plastic adapter according to claim 4, wherein a reinforcing rib is respectively arranged on the first L-shaped fixing base and the second L-shaped fixing base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237568.XU CN210322189U (en) | 2019-07-30 | 2019-07-30 | Sealing detection device for steel-plastic adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921237568.XU CN210322189U (en) | 2019-07-30 | 2019-07-30 | Sealing detection device for steel-plastic adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322189U true CN210322189U (en) | 2020-04-14 |
Family
ID=70127932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921237568.XU Expired - Fee Related CN210322189U (en) | 2019-07-30 | 2019-07-30 | Sealing detection device for steel-plastic adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322189U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263741A (en) * | 2021-12-24 | 2022-04-01 | 扬州大山液压气动制造有限公司 | Rotary oil cylinder sealing device |
-
2019
- 2019-07-30 CN CN201921237568.XU patent/CN210322189U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263741A (en) * | 2021-12-24 | 2022-04-01 | 扬州大山液压气动制造有限公司 | Rotary oil cylinder sealing device |
| CN114263741B (en) * | 2021-12-24 | 2024-04-26 | 扬州大山液压气动制造有限公司 | Rotary cylinder sealing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204085802U (en) | Leak tester | |
| CN210322189U (en) | Sealing detection device for steel-plastic adapter | |
| CN203265437U (en) | Pneumatic tube expanding device | |
| CN210243114U (en) | Bellows leakproofness detection device | |
| CN216066220U (en) | Liftable positioning pipeline flange welding position device | |
| CN209927357U (en) | Pressure testing device of electromagnetic flowmeter | |
| CN218776431U (en) | Flange processingequipment is used in valve processing | |
| CN218313407U (en) | Construction positioning device | |
| CN108500868B (en) | Positioning device and positioning method for machining gear shaft | |
| CN207170583U (en) | A kind of automatic tube bender | |
| CN211709089U (en) | Clamping tool for manufacturing PVC double-wall corrugated pipe | |
| CN214621617U (en) | A airtight detection device for L type pipe | |
| CN111705892B (en) | Concrete sewage pipes connects erection equipment | |
| CN213985651U (en) | Hydraulic clamping device and performance testing system of gas pressure regulator applied by same | |
| CN210773867U (en) | Aluminum template deformation degree detection straightening device | |
| CN219504562U (en) | Pipeline butt joint equipment | |
| CN208230702U (en) | A kind of claw branch junction pipe expanding device | |
| CN219369051U (en) | Valve gas tightness detects frock | |
| CN117782444B (en) | Airtight check out test set of ripple compensator | |
| CN219522258U (en) | PE tubular product production is with cutting fixing device | |
| CN110926705A (en) | Semi-automatic pipe section air tightness testing machine | |
| CN218644581U (en) | Detection mechanism is used in hydrovalve production | |
| CN220063281U (en) | Waterproof testing device | |
| CN113405733B (en) | Automobile valve body air tightness detection device | |
| CN218098199U (en) | Capacity all-in-one machine air tightness testing tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |