CN219819391U - Product transfer clamping plate for filter leak detection equipment - Google Patents
Product transfer clamping plate for filter leak detection equipment Download PDFInfo
- Publication number
- CN219819391U CN219819391U CN202222961173.2U CN202222961173U CN219819391U CN 219819391 U CN219819391 U CN 219819391U CN 202222961173 U CN202222961173 U CN 202222961173U CN 219819391 U CN219819391 U CN 219819391U
- Authority
- CN
- China
- Prior art keywords
- clamp
- clamping
- main
- filter
- auxiliary
- 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.)
- Active
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004826 seaming Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Abstract
The utility model relates to a product transferring clamping plate for a filter leakage detection device, which changes an original semicircular clamping opening into a first V-shaped clamping opening, so that when a larger filter is clamped by the product transferring clamping plate, the original round clamping position is intersected with the abutting mode of the filter, so that the clamping is unstable, the abutting mode of the product transferring clamping plate with the filter is changed into tangent mode after the first V-shaped clamping opening is changed, the abutting surface still has large area of surface contact, the condition that the clamping is unstable and easy to topple caused by the fact that the original round clamping position is transformed into point contact from the surface contact with the filter, and the first V-shaped clamping opening can clamp the filters with different specifications by using the same auxiliary clamping plate, so that the main clamping plate and the auxiliary clamping plate do not need to be frequently replaced, and the adaptability of the clamping plate is greatly improved.
Description
Technical Field
The utility model relates to the field of filter detection, in particular to a product transfer clamping plate for filter leakage detection equipment.
Background
The air filter is one of important accessories of the engine, and the performance of the air filter not only determines the reliability and service life of the engine, but also has great influence on the dynamic property, economy and emission performance of the engine. The air tightness of the air filter is directly related to the quality of motor-driven equipment, so the pressure regulation and leakage detection of the automobile filter are very important technical fields.
The existing filter comprises a shell and a cover plate, a containing cavity is arranged between the shell and the cover plate, a paper element is arranged in the containing cavity, an oil inlet (oil outlet) is arranged on the cover plate, an oil outlet (oil inlet) is arranged at the bottom of the shell, the shell and the cover plate are fixedly connected through screws or are processed into double-layer seaming at the joint of the shell and the cover plate, the connecting strength and the sealing performance between the filter cover and the shell are guaranteed, a mounting screw hole for being mounted on an automobile is formed in the center of the filter, the air tightness test of the filter generally adopts a soaking method, namely, the product filter is fixed firstly, then the fixed filter is soaked in water, then air is injected into the product filter, and the air tightness of the filter is determined by observing the air bubble condition of the water surface.
The utility model discloses a filter fixture for filter check out test set is published to chinese patent application number for CN202120891049.6, but it is including fixed base plate relative movement's main anchor clamps and vice anchor clamps that set gradually, form a plurality of centre gripping positions that can centre gripping filter between main anchor clamps and the vice anchor clamps, be equipped with the pushing mechanism that drives main anchor clamps motion between fixed base plate and the main anchor clamps, be equipped with the clamping mechanism that drive both pressed from both sides tightly between main anchor clamps and the vice anchor clamps, be equipped with a plurality of elastic structure that give both clamping force between main anchor clamps and the vice anchor clamps. Through increasing elastic structure, when carrying out automatic centre gripping, utilize the clamping force that elastic structure provided, can guarantee the clamping reliability of two anchor clamps.
However, in the above technical scheme, the circular clamping position is formed by two semicircles, and the circular clamping position can only clamp the filter with one specification, for example, when the clamping position is suitable for clamping the filter with the direct 60cm, if the clamping position is used for clamping the filter with the diameter of 70cm, the abutting connection surface of the filter and the filter can be changed from surface contact to point contact, so that the clamping is unstable, the clamped filter can be transported into the overturning clamping device, the clamped filter at the clamping position can be pressed down, if the clamping is unstable, the product can be reversely moved upwards to be separated from the clamping position due to acting force, so that the clamping mechanism of the filter needs to frequently replace the clamp when clamping the filter with different specifications and sizes, and meanwhile, the specification height of the filter is larger, and when clamping the filter with higher heights, the clamped filter is easy to overturn due to the structure of the prior technical scheme.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a product transfer clamping plate for filter leakage detection equipment aiming at the defects of the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a clamp plate is transported with product to filter leak hunting equipment, includes main anchor clamps, vice anchor clamps, drives main anchor clamps and vice anchor clamps relative displacement's anchor clamps drive assembly, its characterized in that: the main clamp and the auxiliary clamp are respectively provided with a plurality of first V-shaped clamping openings which correspond to each other, and the first V-shaped clamping openings which correspond to each other between the main clamp and the auxiliary clamp form quadrilateral clamping positions capable of clamping the filter.
By adopting the technical scheme, the clamp driving assembly can drive the clamp at one end to move towards the other end, and can also drive the main clamp and the auxiliary clamp to move towards each other, so that clamping is realized, meanwhile, when the original semicircular clamping port is changed into the first V-shaped clamping port to clamp a larger filter, the original round clamping position is intersected with the abutting mode of the filter, so that the original round clamping position is changed from surface contact to point contact, the clamping is unstable, the abutting mode of the first V-shaped clamping port and the filter is changed into tangent after the first V-shaped clamping port is changed, the abutting surface still has a large area of surface contact, the condition that the original round clamping position is unstable in clamping caused by the fact that the original round clamping position is in the abutting mode of the filter from surface contact to point contact is avoided, and the first V-shaped clamping port can clamp the filters with different specifications by using the same auxiliary clamping plate, so that the main clamp and the auxiliary clamping plate are not required to be frequently replaced, and the adaptability of the clamping plate is greatly improved.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: elastic tensioning mechanisms for giving opposite clamping force to the first V-shaped clamping opening on the main clamp and the auxiliary clamp are arranged between the adjacent quadrilateral clamping positions.
By adopting the technical scheme, the elastic tensioning mechanism can be in a structure of a tension spring, rubber band and the like, so that the main clamp and the auxiliary clamp are driven to clamp in opposite directions, and further the clamping force of the first V-shaped clamping opening is given, and the clamping stability is improved.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the elastic tensioning mechanism comprises a tension spring body, positioning rings are arranged at two ends of the tension spring body, mounting holes for fixing the positioning rings on the main clamp and the auxiliary clamp respectively are formed in the positions, corresponding to the positioning rings, of the main clamp and the auxiliary clamp, and two ends of the tension spring body are respectively arranged in the main clamp and the auxiliary clamp in a penetrating mode and fixedly connected with the main clamp and the auxiliary clamp.
By adopting the technical scheme, the two ends of the tension spring body are respectively arranged inside the main clamp and the auxiliary clamp, and the positioning rings at the two ends of the tension spring body are fixed in the main clamp and the auxiliary clamp through the mounting holes, so that the tension spring body can promote the main clamp and the auxiliary clamp to clamp in opposite directions due to elastic force, and the clamping stability is improved.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the main clamp and/or the auxiliary clamp are/is provided with tightening locking holes corresponding to the mounting holes, and the tightening locking holes and the mounting holes are vertically distributed.
By adopting the technical scheme, after the positioning ring at one end is fixed by arranging the tensioning locking hole, the positioning ring at the other end is pulled to the mounting hole by the tensioning locking hole when being mounted, so that the main clamp and the auxiliary clamp are clamped due to the elastic force after the positioning ring is deformed.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: wear-resisting non-slip blocks are arranged at the first V-shaped clamping openings.
By adopting the technical scheme, the stability of clamping the quadrangular clamping opening and the filter is improved by arranging the wear-resistant anti-skid block, and the service life of the filter is prolonged.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the abrasion-resistant anti-skid blocks on one side of the main clamp or the auxiliary clamp are respectively connected with each other, the abrasion-resistant anti-skid blocks are made of silica gel, and quadrilateral clamping positions are equidistantly arranged on the main clamp and the auxiliary clamp.
By adopting the technical scheme, the wear-resistant anti-skid blocks on one side of the main clamp or the auxiliary clamp are respectively formed integrally, so that the manufacturing and the loading and unloading of the wear-resistant anti-skid blocks are facilitated, the friction force of the filter is increased, the wear-resistant anti-skid blocks and the first V-shaped clamping opening are convenient to attach, and the quadrangular clamping positions arranged at equal intervals facilitate the clamping and transferring of the plurality of filters.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the wear-resistant anti-skid blocks are fixed on the main clamp and/or the auxiliary clamp through pressing plates.
By adopting the technical scheme, the wear-resistant anti-skid block is fixed on the main clamp and the auxiliary clamp through the pressing plate, so that the wear-resistant anti-skid block is more stable in connection with the main clamp and the auxiliary clamp.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the clamp driving assembly comprises opening clamp cylinders arranged on two sides of the main clamp and the auxiliary clamp, the output ends of the opening clamp cylinders are respectively connected with the main clamp and the auxiliary clamp, and the main clamp and the auxiliary clamp are driven to move in opposite directions or opposite directions.
By adopting the technical scheme, the opening clamping cylinder is a cylinder with two ends outputting bidirectionally, and after the cylinder is connected with the main clamp and the auxiliary clamp, the main clamp and the auxiliary clamp can be driven to open or close, so that clamping and loosening are completed.
Foretell filter leak hunting equipment is with product transportation splint can further set up to: the clamping plates are respectively linked with the main clamp and the auxiliary clamp, and the clamping plates are respectively provided with second V-shaped clamping openings which are arranged corresponding to the first V-shaped clamping openings on the main clamp and the auxiliary clamp.
By adopting the technical scheme, through installing the heightening clamp plate above the main clamp and the auxiliary clamp, the main clamp and the auxiliary clamp are changed into double layers from a single layer, and when the main clamp and the auxiliary clamp are used for clamping a higher filter, the main clamp and the auxiliary clamp can be matched with the heightening clamp plate to clamp the two axial ends of the filter, so that one side of the heightening clamp is prevented from toppling over, and the stability of the clamp during transportation is improved.
The utility model is further described below with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present utility model.
Fig. 2 is a top view of embodiment 1 of the present utility model.
Fig. 3 is a schematic structural view of a tension spring body according to embodiment 1 of the present utility model.
Fig. 4 is a state diagram of the filter according to embodiment 2 of the present utility model.
Fig. 5 is a diagram showing a comparison between the clamping state of the embodiment of the present utility model and the background art.
Detailed Description
Example 1
As shown in fig. 1-3, the product transferring clamping plate for the filter leakage detection device comprises a main clamp 1, an auxiliary clamp 2 and a clamp driving assembly for driving the main clamp 1 and the auxiliary clamp 2 to relatively move, wherein a plurality of first V-shaped clamping openings 3 corresponding to each other are formed in the main clamp 1 and the auxiliary clamp 2, quadrilateral clamping positions b capable of clamping a filter a are formed in the first V-shaped clamping openings 3 corresponding to the main clamp 1 and the auxiliary clamp 2, and the quadrilateral clamping positions b are equidistantly arranged on the main clamp 1 and the auxiliary clamp 2, so that the filter leakage detection device is convenient to clamp a plurality of filters simultaneously.
As shown in fig. 5, when the original semicircular clamping opening is changed to the first V-shaped clamping opening 3, for example, when the filter a with the smaller clamping caliber is clamped with the filter a with the diameter of 60cm, if the original semicircular clamping opening is changed to clamp with the filter a with the diameter of 70cm, the contact mode of the original semicircular clamping opening and the filter a is changed from the surface contact to the point contact, so that the clamping is unstable, the contact surface of the first V-shaped clamping opening 3 is still tangent to the contact surface of the first V-shaped clamping opening, the condition that the clamping of the original circular clamping opening is unstable and easy to topple caused by the change of the contact surface of the original circular clamping opening and the filter a with the diameter of 60cm is avoided, and then the first V-shaped clamping opening 3 can clamp the filter a with the diameter of 60cm, for example, the original semicircular clamping opening can only clamp the filter a with the diameter of 60cm stably, the main clamp 1 and the auxiliary clamp 2 are required to be stably clamped, and the clamping section of the filter a with the V-shaped clamping opening 3 can be stably clamped in the filter a large section of 60cm is improved, and the filter fit section is greatly improved.
As shown in fig. 1, fig. 2 and fig. 3, an elastic tensioning mechanism for giving opposite clamping force to the first V-shaped clamping opening 3 on the main clamp 1 and the auxiliary clamp 2 is arranged between adjacent quadrilateral clamping positions b, the elastic tensioning mechanism comprises a tension spring body 4, positioning rings 41 are arranged at two ends of the tension spring body 4, the main clamp 1 and the auxiliary clamp 2 are provided with mounting holes 11 for fixing the positioning rings 41 on the main clamp 1 and the auxiliary clamp 2 respectively corresponding to the positioning rings 41, two ends of the tension spring body 4 are respectively penetrated into the main clamp 1 and the auxiliary clamp 2 and fixedly connected with the main clamp 1 and the auxiliary clamp 2, the main clamp 1 and the auxiliary clamp 2 are provided with tensioning locking holes 12 corresponding to the mounting holes 11, the tensioning locking holes 12 are vertically distributed with the mounting holes 11, the clamp driving assembly comprises split clamp cylinders 7 arranged at two sides of the main clamp 1 and the auxiliary clamp 2, output ends of the split clamp cylinders 7 are respectively connected with the main clamp 1 and the auxiliary clamp 2 and drive the main clamp 1 and the auxiliary clamp to move in opposite directions 2 or vice clamp, one end of the tension spring body 4 penetrates into the main clamp 1 and the mounting holes 2 respectively, one end of the tension spring body 4 is penetrated into the main clamp 1 and the clamping holes 12 and can be stopped at the other end of the clamping holes 11 through the mounting holes 11 and the clamping holes 11 and the other end can be fastened to the fixing holes 11 and the fixing hole 11.
As shown in fig. 1 and 2, the first V-shaped clamping opening 3 is provided with wear-resistant anti-slip blocks 5, the wear-resistant anti-slip blocks 5 on one side of the main clamp 1 and the auxiliary clamp 2 are respectively connected with each other, the wear-resistant anti-slip blocks 5 are made of silica gel, the wear-resistant anti-slip blocks 5 are fixed on the main clamp 1 and/or the auxiliary clamp 2 through pressing plates 6, the wear-resistant anti-slip blocks 5 are integrally processed and are convenient to assemble and disassemble, and meanwhile, the wear-resistant anti-slip blocks 5 can be stably fixed on the main clamp 1 and the auxiliary clamp 2 through the pressing plates 5, and meanwhile, the wear-resistant anti-slip blocks are conveniently processed into a shape attached to the first V-shaped clamping opening 3 due to the characteristic of the silica gel, so that the friction force between a quadrangular clamping position b and a filter a is increased, and the stability and service life of clamping plates are improved.
Example 2
As shown in fig. 4, the main clamp 1 and the auxiliary clamp 2 are respectively provided with a heightening clamp plate 8 in the axial direction, the heightening clamp plates 8 are respectively linked with the main clamp 1 and the auxiliary clamp 2, the heightening clamp plates 8 are respectively provided with a second V-shaped clamp port 81 which is correspondingly arranged with the first V-shaped clamp port 3 on the main clamp 1 and the auxiliary clamp 2, the heightening clamp plates 8 are respectively connected with the main clamp 1 and the auxiliary clamp 2 through heightening rods 82 and are opened and closed along with the heightening clamp plates, so that when a higher filter a is processed in a factory, the main clamp 1, the auxiliary clamp 2 and the heightening clamp plates 8 which are axially heightened through double-layer arrangement can stably clamp the two axial ends of the filter a, and the stability during transferring of the filter a is improved.
Claims (10)
1. The utility model provides a clamp plate is transported with product to filter leak hunting equipment, includes main anchor clamps, vice anchor clamps, drives main anchor clamps and vice anchor clamps relative displacement's anchor clamps drive assembly, its characterized in that: the main clamp and the auxiliary clamp are respectively provided with a plurality of first V-shaped clamping openings which correspond to each other, and the first V-shaped clamping openings which correspond to each other between the main clamp and the auxiliary clamp form quadrilateral clamping positions capable of clamping the filter.
2. The product transfer cleat for a filter leak detection apparatus of claim 1, wherein: elastic tensioning mechanisms for giving opposite clamping force to the first V-shaped clamping opening on the main clamp and the auxiliary clamp are arranged between the adjacent quadrilateral clamping positions.
3. The product transfer cleat for a filter leak detection apparatus of claim 2, wherein: the elastic tensioning mechanism comprises a tension spring body, positioning rings are arranged at two ends of the tension spring body, mounting holes for fixing the positioning rings on the main clamp and the auxiliary clamp respectively are formed in the positions, corresponding to the positioning rings, of the main clamp and the auxiliary clamp, and two ends of the tension spring body are respectively arranged in the main clamp and the auxiliary clamp in a penetrating mode and fixedly connected with the main clamp and the auxiliary clamp.
4. A product transfer cleat for a filter leak detection apparatus as defined in claim 3, wherein: the main clamp and/or the auxiliary clamp are/is provided with tightening locking holes corresponding to the mounting holes, and the tightening locking holes and the mounting holes are vertically distributed.
5. A product transfer cleat for a filter leak detection apparatus according to any one of claims 1-4, wherein: wear-resisting non-slip blocks are arranged at the first V-shaped clamping openings.
6. The product transfer cleat for a filter leak detection apparatus of claim 5, wherein: the abrasion-resistant anti-skid blocks on one side of the main clamp or the auxiliary clamp are respectively connected with each other, the abrasion-resistant anti-skid blocks are made of silica gel, and quadrilateral clamping positions are equidistantly arranged on the main clamp and the auxiliary clamp.
7. The product transfer cleat for a filter leak detection apparatus of claim 6, wherein: the wear-resistant anti-skid blocks are fixed on the main clamp and/or the auxiliary clamp through pressing plates.
8. A product transfer cleat for a filter leak detection apparatus according to any one of claims 1-4, wherein: the clamp driving assembly comprises opening clamp cylinders arranged on two sides of the main clamp and the auxiliary clamp, the output ends of the opening clamp cylinders are respectively connected with the main clamp and the auxiliary clamp, and the main clamp and the auxiliary clamp are driven to move in opposite directions or opposite directions.
9. A product transfer cleat for a filter leak detection apparatus according to any one of claims 1-4, wherein: the clamping plates are respectively linked with the main clamp and the auxiliary clamp, and the clamping plates are respectively provided with second V-shaped clamping openings which are arranged corresponding to the first V-shaped clamping openings on the main clamp and the auxiliary clamp.
10. The product transfer cleat for a filter leak detection apparatus of claim 6, wherein: the clamp driving assembly comprises opening clamp cylinders arranged on two sides of the main clamp and the auxiliary clamp, the output ends of the opening clamp cylinders are respectively connected with the main clamp and the auxiliary clamp, and the main clamp and the auxiliary clamp are driven to move in opposite directions or opposite directions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222961173.2U CN219819391U (en) | 2022-11-03 | 2022-11-03 | Product transfer clamping plate for filter leak detection equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202222961173.2U CN219819391U (en) | 2022-11-03 | 2022-11-03 | Product transfer clamping plate for filter leak detection equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
CN219819391U true CN219819391U (en) | 2023-10-13 |
Family
ID=88282243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202222961173.2U Active CN219819391U (en) | 2022-11-03 | 2022-11-03 | Product transfer clamping plate for filter leak detection equipment |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN219819391U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117086436A (en) * | 2023-10-20 | 2023-11-21 | 常州市兆晟自动化科技有限公司 | Flexible clamp jig for brazing plate type heat exchanger |
-
2022
- 2022-11-03 CN CN202222961173.2U patent/CN219819391U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117086436A (en) * | 2023-10-20 | 2023-11-21 | 常州市兆晟自动化科技有限公司 | Flexible clamp jig for brazing plate type heat exchanger |
CN117086436B (en) * | 2023-10-20 | 2023-12-29 | 常州市兆晟自动化科技有限公司 | Flexible clamp jig for brazing plate type heat exchanger |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN219819391U (en) | Product transfer clamping plate for filter leak detection equipment | |
CN102803811A (en) | Pipe sealing tool with external and internal clamp | |
US6439807B1 (en) | Method and apparatus for underwater connection of pipe pieces and bolt therefor | |
CN1025878C (en) | Piston ring assembly for stirling engine | |
CN2880387Y (en) | Fastening apparatus | |
CN2515185Y (en) | Wharf liquid loading and unloading arm emergency release device | |
CN2409018Y (en) | Hydraulic drawing machine for bolt of cylinder head | |
CN111022823B (en) | Quick maintenance device for oil and gas pipeline | |
CN116337366A (en) | Steel pipe fastening clamp for steel pipe underwater air pressure testing machine | |
CN214947342U (en) | Portable pipeline flow rapid leakage repairing device | |
CN114526019A (en) | Tubing coupling convenient for loosening threads | |
CN108458845B (en) | Car light gas tightness detection device | |
CN214843853U (en) | Pressure detection device for hydraulic cylinder | |
KR100422527B1 (en) | A structure of horse fasten clamp | |
CN212004758U (en) | Pre-tightening T-shaped screwing plugging tool | |
CN215524933U (en) | Sealing clamp for leakage test of engine | |
CN219953470U (en) | Sealing gasket for automobile oil pan | |
CN219136357U (en) | Three-layer concentric sleeve type locking device for automobile sealing cap | |
CN220084277U (en) | Pneumatic seal detection device | |
CN212095151U (en) | Big and small axle press mounting fixture | |
CN220622134U (en) | Portable car air compressor machine testing arrangement | |
CN205002930U (en) | Automobile -used plastics oil pan test equipment | |
CN216954979U (en) | Special aerating device of steering engine air-tight test | |
CN109176579A (en) | It is a kind of for grabbing the handgrip of rear axle housing welded assembly and welding workpiece | |
CN116735323A (en) | Quick assembly disassembly holds membrane section of thick bamboo based on thin shell effect |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |