CN114310707B - Clamping equipment for detecting hydraulic power mechanical element - Google Patents
Clamping equipment for detecting hydraulic power mechanical element Download PDFInfo
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- CN114310707B CN114310707B CN202111651330.3A CN202111651330A CN114310707B CN 114310707 B CN114310707 B CN 114310707B CN 202111651330 A CN202111651330 A CN 202111651330A CN 114310707 B CN114310707 B CN 114310707B
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- 230000000670 limiting effect Effects 0.000 claims abstract description 61
- 230000000149 penetrating effect Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 20
- 238000001514 detection method Methods 0.000 abstract description 13
- 230000003044 adaptive effect Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Jigs For Machine Tools (AREA)
Abstract
The invention discloses clamping equipment for detecting hydraulic power mechanical elements, relates to the technical field of mechanical element detection, and solves the technical problem that a limiting mechanism is not arranged to drive corresponding elements to rotate; the switch of the hydraulic cylinder is opened, so that the whole clamping plate moves, when the limiting diaphragm is pulled, the side movable rods on two sides can be driven to move in the side movable groove, the polygonal fixed blocks can be driven to move, the corresponding polygonal fixed blocks can be embedded into the polygonal fixed grooves by external personnel in the moving process, after the whole polygonal fixed blocks are completely embedded into the polygonal fixed grooves, the fixing effect on the clamping pad can be completed, the whole clamping pad is in a non-rotatable state, the clamped mechanical elements can be effectively detected and processed at multiple angles through the debugging of the whole limiting diaphragm by the external personnel, the operation and the treatment of the external personnel can be facilitated, and the better angle detection effect can be achieved.
Description
Technical Field
The invention belongs to the technical field of mechanical element detection, and particularly relates to clamping equipment for detecting a hydraulic power mechanical element.
Background
The mechanical parts are also called mechanical elements, are basic elements forming the machinery, are indispensible single parts forming the machinery and the machinery, and are used for hydraulic power transmission by adopting special mechanical elements in the transmission process of hydraulic power, and the whole mechanical element is clamped by adopting external clamping equipment in the manufacturing detection process of the mechanical element, so that the detection processing work of the mechanical element is facilitated.
The existing clamping equipment for detecting mechanical elements is generally characterized in that a corresponding hydraulic cylinder is adopted to drive a clamping plate to clamp the mechanical elements, and a special instrument is adopted to detect after the clamping is completed, but in the detection process, the mechanical elements are in a non-rotatable state, so that the mechanical elements are not detected completely, an external person also needs to disassemble and assemble again to clamp the mechanical elements, thereby completing the multi-surface detection effect.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art; therefore, the invention provides clamping equipment for detecting the hydraulic power mechanical element, which is used for solving the technical problem that a limiting mechanism is not arranged to drive a corresponding element to rotate.
To achieve the above object, according to an embodiment of the first aspect of the present invention, a clamping device for detecting a hydraulic power mechanical element is provided, which includes a limiting plate and a lower bottom plate, the lower bottom plate is located below the limiting plate, hydraulic cylinders are disposed on two sides of an upper end surface of the limiting plate, an output end of each hydraulic cylinder is provided with an output shaft, and one end of each output shaft is provided with a clamping plate;
The opposite faces of the clamping plates are respectively and rotatably connected with a clamping pad, and a limiting mechanism for fixing the clamping pads is arranged in the clamping plates;
the lower plate is characterized in that plane plates are arranged on two sides of the upper end face of the lower bottom plate, lower hollow plates are arranged on two sides of the lower end of the limiting plate, and a clamping mechanism is arranged between the lower hollow plates and the plane plates.
Preferably, the limiting mechanism comprises a connecting rotating rod, the connecting rotating rod is arranged in the middle of the inner wall of the clamping pad and penetrates through the clamping plate, a middle movable groove for the connecting rotating rod to move is formed in the clamping plate, and a polygonal fixed groove is formed in the connecting rotating rod;
The clamping plate is internally provided with side movable grooves on two sides of the middle movable groove, side movable rods are slidably arranged in the side movable grooves, limiting transverse plates are arranged between the two groups of corresponding side movable rods, polygonal fixed blocks are arranged in the middle of the inner walls of the limiting transverse plates, the polygonal fixed blocks are located in the polygonal fixed grooves, and a blocking wafer is arranged at one end of each side movable rod.
Preferably, the clamping mechanism comprises a penetrating column and a clamping circular groove, wherein the penetrating column is uniformly arranged at the upper end of the plane plate in three groups, the clamping circular groove is matched with the penetrating column, and the clamping circular groove is uniformly arranged inside the lower hollow plate.
Preferably, the middle part of the annular outer surface of the penetrating column is provided with a jogged round groove, two sides of the inner part of the lower hollow plate are respectively provided with a built-in movable plate in a sliding mode, two groups of corresponding opposite faces of the built-in movable plates are respectively provided with a clamping round block, two ends of the built-in movable plates are respectively provided with a limiting poking piece, two sides of the inner part of the built-in movable plates are respectively penetrated with a center rod, the upper side and the lower side of the annular outer surface of the center rod are respectively wrapped with a surrounding abutting piece, and the clamping round blocks are matched with the jogged round groove.
Preferably, the notch for the movement of the center rod is formed in the built-in movable plate, the notch for the movement of the built-in movable plate is formed in the middle area of the inner part of the lower hollow plate, and the notches for the movement of the clamping round blocks are formed in two sides of the clamping round groove.
Preferably, a groove for embedding the central rod is formed in the lower hollow plate, and the surrounding abutting piece is fixedly connected between the groove and the built-in movable plate.
Preferably, the blocking disc is attached to the inner wall of the clamping plate, and a movable bearing is arranged at the rotary joint between the connecting rotating rod and the middle movable groove.
Preferably, the corners of the periphery of the lower bottom plate are provided with thread grooves.
Compared with the prior art, the invention has the beneficial effects that: the switch of the hydraulic cylinder is opened to enable the whole clamping plate to move, an external mechanical element is clamped through the clamping pad, an external person can pull the limiting diaphragm, when the limiting diaphragm is pulled, the side movable rods on two sides can be driven to move in the side movable groove, the polygonal fixed block can be driven to move, in the moving process of the polygonal fixed block, the external person can embed the corresponding polygonal fixed block into the polygonal fixed groove, after the whole polygonal fixed block is completely embedded into the polygonal fixed groove, the fixing effect on the clamping pad can be completed, the whole clamping pad is in a non-rotatable state, the clamped mechanical element can be effectively subjected to multi-angle detection processing through the adjustment of the whole limiting diaphragm by the external person, the operation processing of the external person is facilitated, and a good angle detection effect can be achieved;
The limiting poking piece is poked, the corresponding built-in movable plate can be driven to move in the lower hollow plate, in the moving process, the adaptive clamping round block is driven to move in the clamping round groove, when the limiting poking piece moves, the penetrating column can be clamped by the clamping round block, in the clamping process, the corresponding clamping round block and the penetrating column are clamped through the adaptive action of the embedding round groove, the whole limiting plate and the lower bottom plate are enabled to achieve the connection clamping action, so that a good clamping and fixing effect is achieved, an external person can conveniently complete the disassembling and assembling treatment work of the limiting plate and the lower bottom plate, and a good disassembling and assembling treatment effect can be achieved.
Drawings
FIG. 1 is a prior art schematic diagram of the present apparatus;
FIG. 2 is a schematic perspective view of the apparatus of the present invention;
FIG. 3 is an enlarged schematic view of the internal structure of the area A in FIG. 2 according to the present invention;
FIG. 4 is a schematic plan view showing the internal structure of the underlying hollow slab of the present invention;
FIG. 5 is a schematic side view of an underlying hollow slab of the present invention;
Reference numerals: 1. a limiting plate; 2.a lower base plate; 21. a thread groove; 22. a planar plate; 23. inserting a column; 231. fitting the round groove; 3. a hydraulic cylinder; 4. a clamping plate; 41. a side movable groove; 42. defining a cross plate; 43. a side movable rod; 44. polygonal fixed blocks; 45. a movable groove is arranged in the middle; 46. connecting a rotating rod; 47. polygonal fixing grooves; 5. a clamping pad; 6. an output shaft; 7. blocking the wafer; 8. a hollow slab is arranged below; 81. the circular groove is clamped; 82. a movable plate is arranged in the inner part; 83. clamping the round block; 84. a central rod; 85. surrounding the interference member; 86. defining a paddle.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 2, the application provides a clamping device for detecting a hydraulic power mechanical element, which comprises a limiting plate 1 and a lower bottom plate 2, wherein the lower bottom plate 2 is positioned below the limiting plate 1, hydraulic cylinders 3 are arranged on two sides of the upper end surface of the limiting plate 1, an output end of each hydraulic cylinder 3 is provided with an output shaft 6, and one end of each output shaft 6 is provided with a clamping plate 4;
the opposite surfaces of the clamping plates 4 are respectively and rotatably connected with a clamping pad 5, and a limiting mechanism for fixing the clamping pad 5 is arranged in the clamping plate 4;
The limiting mechanism can clamp the external mechanical element through the clamping pad 5, and after the clamping is completed, the limiting mechanism drives the whole mechanical element to effectively rotate;
plane plates 22 are arranged on two sides of the upper end face of the lower bottom plate 2, lower hollow plates 8 are arranged on two sides of the lower end of the limiting plate 1, and a clamping mechanism is arranged between the lower hollow plates 8 and the plane plates 22;
the clamping mechanism is used for clamping and fixing the lower hollow plate 8 and the plane plate 22, so that the whole limiting plate 1 is in a fixed state.
Referring to fig. 2 and 3, the limiting mechanism includes a connecting rod 46, the connecting rod 46 is disposed in the middle of the inner wall of the clamping pad 5, the connecting rod 46 penetrates through the clamping plate 4, a middle movable slot 45 for the connecting rod 46 to move is formed in the clamping plate 4, and a polygonal fixing slot 47 is formed in the connecting rod 46;
the clamping plate 4 is internally provided with side movable grooves 41 on two sides of a middle movable groove 45, side movable rods 43 are slidably arranged in the side movable grooves 41, limiting transverse plates 42 are arranged between two groups of corresponding side movable rods 43, polygonal fixed blocks 44 are arranged in the middle of the inner walls of the limiting transverse plates 42, the polygonal fixed blocks 44 are positioned in polygonal fixed grooves 47, and a blocking wafer 7 is arranged at one end of each side movable rod 43;
The switch of the hydraulic cylinder 3 is opened to enable the whole clamping plate 4 to move, the clamping plate 4 can clamp an external mechanical element through the clamping pad 5 in the moving process, after the clamping effect is completed, an external person can pull the limiting transverse plate 42, when the limiting transverse plate 42 is pulled, the side movable rods 43 on two sides can be driven to move in the side movable groove 41, in the moving process, the polygonal fixed block 44 can be driven to move, the polygonal fixed block 44 can be embedded into the polygonal fixed groove 47 by the external person, after the whole polygonal fixed block 44 is completely embedded into the polygonal fixed groove 47, the fixing effect on the clamping pad 5 can be completed, the whole clamping pad 5 is in a non-rotatable state, and the clamped mechanical element can be effectively subjected to multi-angle detection processing through the debugging of the whole limiting transverse plate 42 by the external person, so that the external person can conveniently operate and process, and a good angle detection effect can be achieved.
Referring to fig. 2, 4 and 5, the locking mechanism includes three sets of insertion posts 23 and locking circular grooves 81, the insertion posts 23 are uniformly arranged at the upper end of the plane plate 22, the locking circular grooves 81 are matched with the insertion posts 23, and the locking circular grooves 81 are uniformly arranged in the lower hollow plate 8;
The penetrating columns 23 can be effectively embedded into the clamping circular grooves 81, after the corresponding penetrating columns 23 are completely clamped into the clamping circular grooves 81, the clamping connection effect between the limiting plate 1 and the lower bottom plate 2 can be achieved, a good clamping connection effect is achieved, and the whole limiting plate 1 can be conveniently disassembled and assembled by external personnel.
The middle of the annular outer surface of the penetrating column 23 is provided with a jogged round groove 231, two sides of the inner part of the lower hollow plate 8 are respectively provided with a built-in movable plate 82 in a sliding manner, two corresponding groups of opposite sides of the built-in movable plate 82 are respectively provided with a clamping round block 83, two ends of the built-in movable plate 82 are respectively provided with a limiting pulling piece 86, two sides of the inner part of the built-in movable plate 82 are respectively penetrated with a center rod 84, the upper side and the lower side of the annular outer surface of the center rod 84 are respectively wrapped with a surrounding abutting piece 85, and the clamping round blocks 83 are matched with the jogged round groove 231;
The limiting poking piece 86 is poked, the corresponding built-in movable plate 82 can be driven to move in the lower hollow plate 8, in the moving process, the adaptive clamping round block 83 is driven to move in the clamping round groove 81, the clamping round block 83 can clamp the penetrating column 23 in the moving process, in the clamping process, the corresponding clamping round block 83 and the penetrating column 23 are clamped through the adapting function of the embedding round groove 231, the whole limiting plate 1 and the lower bottom plate 2 are connected and clamped, so that a good clamping and fixing effect is achieved, an external person can conveniently complete the disassembling and assembling treatment work of the limiting plate 1 and the lower bottom plate 2, and a good disassembling and assembling treatment effect can be achieved.
The built-in movable plate 82 is internally provided with a notch for the movement of the central rod 84, the middle area of the interior of the lower hollow plate 8 is provided with a notch for the movement of the built-in movable plate 82, and both sides of the clamping circular groove 81 are provided with notches for the movement of the clamping circular block 83.
The built-in movable plate 82 is in the removal in-process, the limiting action of corresponding center pole 84, the corresponding built-in movable plate 82 is moved in the orbit of predetermineeing, during the removal, drive corresponding surrounding conflict piece 85 and take place deformation, can reset after surrounding conflict piece 85 takes place deformation, contradict built-in movable plate 82, thereby make built-in movable plate 82 remove to block circular slot 81 inside, press from both sides the inserting post 23 tightly, can make built-in movable plate 82 closely laminate with the inserting post 23, reach better limiting action.
A groove for embedding the central rod 84 is formed in the lower hollow plate 8, and the surrounding abutting piece 85 is fixedly connected between the groove and the built-in movable plate 82;
When the built-in movable plate 82 moves, the corresponding surrounding collision piece 85 can be effectively driven to move, and deformation is carried out when the surrounding collision piece 85 moves, so that the built-in movable plate 82 is collided, and the built-in movable plate 82 is enabled to be better in deformation collision effect.
The blocking disc 7 is attached to the inner wall of the clamping plate 4, and a movable bearing is arranged at the rotary joint between the connecting rotating rod 46 and the middle movable groove 45;
the connecting rotating rod 46 can effectively rotate in the middle movable groove 45 through the rotation action of the movable bearing, and the blocking disc 7 can effectively collide with the inner wall of the clamping plate 4 in the moving process to form a blocking effect.
Screw grooves 21 are formed in the corners of the periphery of the lower bottom plate 2, and the installation effect of the lower bottom plate 2 can be achieved through the installation effect of the screw grooves 21.
The working principle of the invention is as follows: the switch of the hydraulic cylinder 3 is opened to enable the whole clamping plate 4 to move, the clamping pad 5 can clamp an external mechanical element in the moving process of the clamping plate 4, after the clamping action is completed, an external person can pull the limiting transverse plate 42, when the limiting transverse plate 42 is pulled, the side movable rods 43 on two sides can be driven to move in the side movable groove 41, in the moving process, the polygonal fixed block 44 can be driven to move, in the moving process of the polygonal fixed block 44, the external person can embed the corresponding polygonal fixed block 44 into the polygonal fixed groove 47, after the whole polygonal fixed block 44 is completely embedded into the polygonal fixed groove 47, the fixing action on the clamping pad 5 can be completed, the whole clamping pad 5 is in a non-rotatable state, and the clamped mechanical element can be effectively subjected to multi-angle detection processing through the debugging of the whole limiting transverse plate 42 by the external person, so that the external person can conveniently operate and process the operation, and a good angle detection effect can be achieved;
The limiting poking piece 86 is poked, the corresponding built-in movable plate 82 can be driven to move in the lower hollow plate 8, in the moving process, the adaptive clamping round block 83 is driven to move in the clamping round groove 81, the clamping round block 83 can clamp the penetrating column 23 in the moving process, in the clamping process, the corresponding clamping round block 83 and the penetrating column 23 are clamped through the adapting function of the embedding round groove 231, the whole limiting plate 1 and the lower bottom plate 2 are connected and clamped, so that a good clamping and fixing effect is achieved, an external person can conveniently complete the disassembling and assembling treatment work of the limiting plate 1 and the lower bottom plate 2, and a good disassembling and assembling treatment effect can be achieved.
The above embodiments are only for illustrating the technical method of the present invention and not for limiting the same, and it should be understood by those skilled in the art that the technical method of the present invention may be modified or substituted without departing from the spirit and scope of the technical method of the present invention.
Claims (5)
1. The clamping device for detecting the hydraulic power mechanical element comprises a limiting plate (1) and a lower bottom plate (2), and is characterized in that the lower bottom plate (2) is positioned below the limiting plate (1), hydraulic cylinders (3) are arranged on two sides of the upper end face of the limiting plate (1), an output end of each hydraulic cylinder (3) is provided with an output shaft (6), and one end of each output shaft (6) is provided with a clamping plate (4);
the opposite surfaces of the corresponding clamping plates (4) are respectively and rotatably connected with a clamping pad (5), and a limiting mechanism for fixing the clamping pads (5) is arranged in the clamping plates (4);
the limiting mechanism comprises a connecting rotating rod (46), the connecting rotating rod (46) is arranged in the middle of the inner wall of the clamping pad (5), the connecting rotating rod (46) penetrates through the clamping plate (4), a centrally-arranged movable groove (45) for the connecting rotating rod (46) to move is formed in the clamping plate (4), and a polygonal fixed groove (47) is formed in the connecting rotating rod (46);
Side movable grooves (41) are formed in the clamping plate (4) and located on two sides of the middle movable groove (45), side movable rods (43) are slidably arranged in the side movable grooves (41), limiting transverse plates (42) are arranged between two groups of corresponding side movable rods (43), a multi-side fixed block (44) is arranged in the middle of the inner wall of each limiting transverse plate (42), the multi-side fixed block (44) is located in each multi-side fixed groove (47), and a blocking wafer (7) is arranged at one end of each side movable rod (43);
The blocking disc (7) is attached to the inner wall of the clamping plate (4), and a movable bearing is arranged at the rotary joint between the connecting rotating rod (46) and the middle movable groove (45);
the hydraulic cylinder (3) pushes the adjacent clamping plates (4) to move, the two clamping pads (5) move close to clamp objects to be clamped, the limiting transverse plate (42) is pulled to move away from the clamping plates (4), the polygonal fixing block (44) is separated from the polygonal fixing groove (47), the connecting rotating rod (46) is rotated to change the clamping angle of the clamped objects, the limiting transverse plate (42) is pushed to be embedded into the polygonal fixing groove (47), and the clamping pads (5) are locked;
The two sides of the upper end face of the lower bottom plate (2) are respectively provided with a plane plate (22), two sides of the lower end of the limiting plate (1) are respectively provided with a lower hollow plate (8), and a clamping mechanism is arranged between the lower hollow plates (8) and the plane plates (22).
2. The clamping device for detecting the hydraulic power mechanical element according to claim 1, wherein the clamping mechanism comprises a penetrating column (23) and a clamping circular groove (81), the penetrating column (23) is divided into three groups, the three groups are uniformly arranged at the upper end of the plane plate (22), the clamping circular groove (81) is matched with the penetrating column (23), and the clamping circular groove (81) is uniformly arranged inside the lower hollow plate (8).
3. The clamping device for detecting the hydraulic power mechanical element according to claim 2, wherein the middle of the annular outer surface of the penetrating column (23) is provided with a jogged round groove (231), two inner sides of the lower hollow plate (8) are respectively provided with a built-in movable plate (82) in a sliding mode, two corresponding opposite faces of the built-in movable plate (82) are respectively provided with a clamping round block (83), two ends of the built-in movable plate (82) are respectively provided with a limiting pulling piece (86), two inner sides of the built-in movable plate (82) are respectively penetrated with a center rod (84), the upper side and the lower side of the annular outer surface of the center rod (84) are respectively wrapped with a surrounding abutting piece (85), and the clamping round blocks (83) are matched with the jogged round groove (231).
4. A clamping device for detecting hydraulic power mechanical elements according to claim 3, characterized in that a groove for embedding a central rod (84) is formed in the lower hollow plate (8), and the surrounding abutting piece (85) is fixedly connected between the groove and the built-in movable plate (82).
5. The clamping device for detecting the hydraulic power mechanical element according to claim 1, wherein screw grooves (21) are formed at the corners of the periphery of the lower base plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651330.3A CN114310707B (en) | 2021-12-30 | 2021-12-30 | Clamping equipment for detecting hydraulic power mechanical element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651330.3A CN114310707B (en) | 2021-12-30 | 2021-12-30 | Clamping equipment for detecting hydraulic power mechanical element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114310707A CN114310707A (en) | 2022-04-12 |
| CN114310707B true CN114310707B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111651330.3A Active CN114310707B (en) | 2021-12-30 | 2021-12-30 | Clamping equipment for detecting hydraulic power mechanical element |
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| CN (1) | CN114310707B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012143868A (en) * | 2012-05-08 | 2012-08-02 | Pascal Engineering Corp | Clamp device |
| CN112497033A (en) * | 2020-12-26 | 2021-03-16 | 韦永新 | Hardware polishing equipment capable of improving polishing degree |
| CN212858581U (en) * | 2020-04-27 | 2021-04-02 | 新昌县黄达机械有限公司 | Machining is with mechanical fixture that can multi-angle is fixed |
| CN213646625U (en) * | 2020-09-28 | 2021-07-09 | 天津通卓机器人有限公司 | Numerical control machine tool for mechanical parts |
| CN214186900U (en) * | 2020-12-30 | 2021-09-14 | 天津卓优智顺科技有限公司 | Visual multi-angle test point test fixture |
| CN214642005U (en) * | 2021-01-26 | 2021-11-09 | 胡斌 | Hydraulic clamp for mine machining |
-
2021
- 2021-12-30 CN CN202111651330.3A patent/CN114310707B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012143868A (en) * | 2012-05-08 | 2012-08-02 | Pascal Engineering Corp | Clamp device |
| CN212858581U (en) * | 2020-04-27 | 2021-04-02 | 新昌县黄达机械有限公司 | Machining is with mechanical fixture that can multi-angle is fixed |
| CN213646625U (en) * | 2020-09-28 | 2021-07-09 | 天津通卓机器人有限公司 | Numerical control machine tool for mechanical parts |
| CN112497033A (en) * | 2020-12-26 | 2021-03-16 | 韦永新 | Hardware polishing equipment capable of improving polishing degree |
| CN214186900U (en) * | 2020-12-30 | 2021-09-14 | 天津卓优智顺科技有限公司 | Visual multi-angle test point test fixture |
| CN214642005U (en) * | 2021-01-26 | 2021-11-09 | 胡斌 | Hydraulic clamp for mine machining |
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| Publication number | Publication date |
|---|---|
| CN114310707A (en) | 2022-04-12 |
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