CN117559716A - Compact structure's start-up rechargeable diesel engine power output structure - Google Patents
Compact structure's start-up rechargeable diesel engine power output structure Download PDFInfo
- Publication number
- CN117559716A CN117559716A CN202311493635.5A CN202311493635A CN117559716A CN 117559716 A CN117559716 A CN 117559716A CN 202311493635 A CN202311493635 A CN 202311493635A CN 117559716 A CN117559716 A CN 117559716A
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- Prior art keywords
- diesel engine
- power output
- elastic coupling
- bearing
- oil seal
- 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.)
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- 238000010168 coupling process Methods 0.000 claims abstract description 75
- 238000005859 coupling reaction Methods 0.000 claims abstract description 75
- 230000008878 coupling Effects 0.000 claims abstract description 73
- 239000003921 oil Substances 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 230000005355 Hall effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229910000639 Spring steel Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241001584775 Tunga penetrans Species 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/124—Sealing of shafts
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a power output structure of a starting charging diesel engine, which has a compact structure, wherein an outer half coupling unit comprises an elastic coupling, a gear ring, a power output flange and a plurality of permanent magnets are arranged on the coupling, an inner half coupling unit comprises a flywheel shell, a crankshaft is connected with the elastic coupling, and a bearing bush is arranged between the crankshaft and a machine body; an iron core is arranged on the inner side of the flywheel shell, and an electromagnetic coil is wound on the iron core; the iron core comprises a plurality of groups of silicon steel sheets fixed on the flywheel shell; the elastic coupling connecting part comprises a sealing matching section and a shaft end matching section; the oil seal support is provided with an oil seal corresponding to the seal matching section, a bearing is arranged at the joint of the machine body and the oil seal support, a bearing ring is arranged on the end face of one side of the power output flange, which faces the elastic coupling, and an annular groove matched with the bearing ring is arranged on the surface of the elastic coupling. The invention has compact structure, can be used for connecting the output shaft and the load shaft of the diesel engine, and reduces vibration, impact and torsional vibration in the transmission process through elastic deformation.
Description
Technical Field
The invention belongs to the technical field of power output of diesel engines, and particularly relates to a power output structure of a start-charging type diesel engine, which has a compact structure.
Background
The diesel engine power output structure is used for outputting the power of the diesel engine to special equipment such as ships, generators or gearboxes. The traditional power output structure generally consists of a crankshaft, a flywheel, a coupling flywheel shell and other parts, and the flywheel and the coupling are generally covered in the flywheel shell. With the compact design trend and requirement of modern diesel engine layout, the power output structure often needs to leave space for installing a starter, a jigger mechanism, other accessories and the like, and the structure is complex and occupies large space. The battery pack required by the starting of the diesel engine often needs the diesel engine to provide a charging power supply for the diesel engine, so that the diesel engine needs to be independently provided with a charging generator, occupies a complex space for transmission and has certain loss. In the diesel engine output structure in the prior art, a coupling and a flywheel are generally integrated, and as a starting motor drives the flywheel when the diesel engine is started, gear transmission is generally adopted, and when the starting motor is used, the gear of the starting motor stretches out and withdraws to easily cause faults, so that the gear ring of the flywheel is toothed and the starting motor burns out to cause faults, and the reliability of the whole engine is affected. Therefore, improvements are needed.
Disclosure of Invention
In view of the above, the present invention is directed to overcoming the defects in the prior art, and providing a power output structure of a start-up rechargeable diesel engine with a compact structure.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a compact structure of power output structure of a start-up rechargeable diesel engine comprises an inner half coupling unit and an outer half coupling unit arranged on the inner half coupling unit;
the outer half coupling unit comprises an elastic coupling, the outer circumferential surface of the elastic coupling is provided with a plurality of permanent magnets, one side of the elastic coupling, which faces the inner half coupling unit, is provided with a gear ring, and one side, which is far away from the inner half coupling unit, is provided with a power output flange;
the inner half coupling unit comprises a flywheel shell arranged on the diesel engine body, one end of a crankshaft extending outwards in the diesel engine body is connected with the elastic coupling, and a bearing bush is arranged between the crankshaft and the engine body; an iron core is arranged on the inner side of the flywheel shell, and an electromagnetic coil is wound on the iron core; the iron core comprises a plurality of groups of silicon steel sheets fixed on the flywheel shell;
the elastic coupling comprises a main body part and a connecting part at one side of the main body part, wherein the connecting part comprises a sealing fit section and a shaft end fit section; an oil seal support is arranged at the joint of the machine body and the flywheel shell, an oil seal is arranged at the corresponding sealing matching section of the oil seal support, and sealing rings are arranged between the oil seal support and the machine body and between the oil seal support and the flywheel shell;
a bearing is arranged at the joint of the machine body and the oil seal support, a bearing driving ring is arranged between the inner ring of the bearing and the shaft end matching section, the bearing driving ring is in interference fit with the shaft end matching section, a clamping groove is arranged on the inner ring of the bearing, and a spline matched with the clamping groove is arranged on the bearing driving ring;
the end face of the power output flange, which faces one side of the elastic coupler, is provided with a bearing ring, and the surface of the elastic coupler is provided with a ring groove matched with the bearing ring.
Further, the output flange is fixed to the outer elastic coupling member by screws.
Further, each permanent magnet is uniformly distributed along the center of the elastic coupling.
Further, a dovetail groove is formed in the outer circumference of the elastic coupler, and the permanent magnet is embedded in the dovetail groove.
Further, the permanent magnet is arc-shaped, and the radian of the outer surface of the permanent magnet is consistent with that of the outer wall of the elastic coupling.
Further, the permanent magnet and the dovetail groove are fixed in an auxiliary way through a fastening agent.
Further, a pressing plate is arranged on the inner side of the flywheel shell, and the electromagnetic coil is arranged between the pressing plate and the iron core.
Further, each group of silicon steel sheets is uniformly distributed along the center of the flywheel shell, and the electromagnetic coils are wound on the outer surfaces of each group of silicon steel sheets.
Compared with the prior art, the invention has the following advantages:
the output structure provided by the invention consists of two half-coupling shafts and an elastic element, wherein the elastic element can be made of rubber, polyurethane or spring steel and other materials, has a compact structure, can be used for connecting an output shaft and a load shaft of a diesel engine, and reduces vibration, impact and torsional vibration in the transmission process through elastic deformation, thereby reducing the abrasion and noise of mechanical parts, preventing torsional vibration resonance of a shaft system and improving the safety, transmission efficiency and reliability.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic illustration of the inner coupling part of the present invention;
FIG. 3 is a schematic perspective view of an outer coupling part of the present invention;
fig. 4 is a schematic perspective view of an inner coupling part according to the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
A compact start-up charging type diesel engine power output structure, as shown in fig. 1 to 4, includes an inner coupling half and an outer coupling half mounted to the inner coupling half; the outer half coupling unit comprises an elastic coupling 1, the outer circumferential surface of the elastic coupling is provided with a plurality of permanent magnets 2, one side of the elastic coupling facing the inner half coupling unit is provided with a gear ring 3, and one side of the elastic coupling far away from the inner half coupling unit is provided with a power output flange 4; the inner half coupling unit comprises a flywheel shell 5 arranged on a diesel engine body, one end of a crankshaft 6 in the diesel engine body, which extends outwards, is connected with the elastic coupling, and a bearing bush 7 is arranged between the crankshaft and the engine body. The bearing bush is installed at the corresponding position of the output end of the engine body in an interference mode and bears the rotation moment of the output end of the crankshaft.
An iron core is arranged on the inner side of the flywheel shell, and an electromagnetic coil 8 is wound on the iron core; typically, the core comprises several sets of silicon steel sheets 9 fixed to the flywheel housing. The permanent magnet on the elastic coupling is used as a rotor, and the electromagnetic coil wound on the outer side of the silicon steel sheet on the flywheel shell is used as a stator. The permanent magnets on the elastic coupling adopt a polarity distribution mode of radial left N and right S (or left S and right N), and the adjacent sides of the adjacent permanent magnets have the same polarity, for example. The polarity distribution of the adjacent permanent magnets on the left side and the right side of the left N and the right S permanent magnets is left S and right N, and so on.
The elastic coupling comprises a main body part 10 and a connecting part at one side of the main body part, wherein the connecting part comprises a seal fit section 11 and a shaft end fit section 12; an oil seal support 13 is arranged at the joint of the machine body and the flywheel shell, an oil seal 14 is arranged at the corresponding sealing matching section of the oil seal support, and sealing rings 15 are arranged between the oil seal support and the machine body and between the oil seal support and the flywheel shell; the oil seal support is fixed on the machine body by bolts, and the inner circumference of the oil seal support is assembled with the oil seal in an interference mode. The oil seal (shaft lip ring) cooperates with the elastic coupling to prevent the engine oil from leaking out of the engine.
In an alternative embodiment, the outer diameter of the power output flange is smaller than the outer diameter of the main body part of the elastic coupling, so that the part of the elastic coupling between the power output flange and the flywheel housing (iron core) is in a free state, no rigid structure is used for limiting, the damping deformation capacity is higher, the impact and vibration effects caused by load are reduced obviously, and the noise immunity is better. In addition, for the convenience of observation, the flywheel housing mounting bottom surface is opened and is observed the oilhole.
A bearing 16 is arranged at the joint of the machine body and the oil seal support, a bearing driving ring 17 is arranged between the inner ring of the bearing and the shaft end matching section, the bearing driving ring is in interference fit with the shaft end matching section, a clamping groove is arranged on the inner ring of the bearing, and a spline matched with the clamping groove is arranged on the bearing driving ring; the power output flange is equipped with the carrier ring 18 towards elastic coupling one side terminal surface, is equipped with on elastic coupling surface with carrier ring complex annular 19, through carrier ring and annular's cooperation, realizes the spacing of elastic coupling radial direction, carries out effective buffering to the vibration impact of power output flange side, and flywheel shell links to each other with diesel engine cooling water course and helps the giving off of heat during the start-up.
Typically, the output flange is secured to the outer resilient coupling member by screws. And the permanent magnets are uniformly distributed along the center of the elastic coupling. The flywheel housing is provided with a pressure plate 20 on the inner side thereof, and the electromagnetic coil is positioned between the pressure plate and the iron core. Each group of silicon steel sheets are uniformly distributed along the center of the flywheel shell, and electromagnetic coils are wound on the outer surfaces of each group of silicon steel sheets.
In general, the outer circumference of the elastic coupling can be provided with a dovetail groove, and the permanent magnet is embedded in the dovetail groove. Typically, the permanent magnets are arc-shaped, and the outer surface radian of the permanent magnets is consistent with the outer wall radian of the elastic coupling. Preferably, the permanent magnet and the dovetail groove are fixed in an auxiliary way through a fastening agent. In an alternative embodiment, the elastic coupling is internally provided with a damping element, and in particular, the damping element can be made of a leaf spring or a coil spring, so as to improve the adaptability of the elastic coupling to the high-torque high-load working condition environment.
When the diesel engine is started, a storage battery is used for supplying electricity to a stator (a silicon steel sheet is wound with an electromagnetic coil) to generate a magnetic field, a rotor (a permanent magnet is arranged on the outer circumference of an elastic coupling) is rotated by utilizing the principle that like poles repel each other and opposite poles attract each other, charged particles in a stator circuit are deflected in the magnetic field under the action of Lorentz force to generate an additional electric field, and the additional electric field is changed along with the change of the magnetic field generated by the rotation of the rotor. The change of the rotating magnetic field of the rotor can be obtained through the voltage value output by the Hall effect sensor, so that the angle position of the elastic coupler is obtained (the Hall semiconductor chip in the Hall effect sensor generates potential difference in the additional electric field, and the potential difference of the semiconductor chip changes along with the change of the additional electric field). When the absolute value of the output voltage of the Hall effect sensor is the maximum, a current reversing feedback signal is given to the control module, and the stator and the rotor always keep the state of like poles repel or opposite poles attract through repeated reversing of the current, so that the rotor continuously runs, and the diesel engine is started. The diesel engine is powered off after being started successfully, so that the coil burning loss is avoided.
After the diesel engine stably operates, the rotor stably rotates at a constant speed under the action of ignition and work of the diesel engine, and the rotor magnetic field rotates along with the rotor. When the electric quantity of the storage battery pack is insufficient and needs to be charged, a closed loop can be formed by controlling the coils through the control module, magnetic force lines sequentially cut the stator, and alternating current is generated in each silicon steel coil through Faraday electromagnetic induction law. It should be noted that the electromagnetic coils on the silicon steel sheet of the stator must be symmetrically distributed, and the armature currents of each phase can be synthesized to generate a rotating magnetic field with synchronous rotation speed. The stator magnetic field and the rotor magnetic field interact to generate braking torque, the diesel engine fires to overcome the braking torque to do work, so that mechanical energy is converted into electric energy, and output current is converted into direct current through rectification and filtering to charge the battery pack.
The output structure provided by the invention consists of two half-coupling shafts and an elastic element, wherein the elastic element can be made of rubber, polyurethane or spring steel and other materials, can be used for connecting an output shaft and a load shaft (the load can be a propeller, a generator, a water pump and the like) of a diesel engine, and reduces vibration, impact and torsional vibration in the transmission process through elastic deformation, so that the abrasion and noise of mechanical parts are reduced, the torsional vibration resonance of a shaft system is prevented, and the safety, the transmission efficiency and the reliability are improved. The structure has the characteristics of low speed and large torque, can realize compression ignition starting of the diesel engine, has no transmission in a direct-drive mode, has compact structure and high efficiency, and avoids damage of a transmission mechanism during starting. The device can replace the functions of a starting motor, a charging generator and related transmission mechanisms, and damping generated during charging has a certain effect on torsional vibration damping of the whole shafting.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a compact structure's start-up rechargeable diesel engine power output structure which characterized in that: comprises an inner half coupling unit and an outer half coupling unit arranged on the inner half coupling unit;
the outer half coupling unit comprises an elastic coupling, the outer circumferential surface of the elastic coupling is provided with a plurality of permanent magnets, one side of the elastic coupling, which faces the inner half coupling unit, is provided with a gear ring, and one side, which is far away from the inner half coupling unit, is provided with a power output flange;
the inner half coupling unit comprises a flywheel shell arranged on the diesel engine body, one end of a crankshaft extending outwards in the diesel engine body is connected with the elastic coupling, and a bearing bush is arranged between the crankshaft and the engine body; an iron core is arranged on the inner side of the flywheel shell, and an electromagnetic coil is wound on the iron core; the iron core comprises a plurality of groups of silicon steel sheets fixed on the flywheel shell;
the elastic coupling comprises a main body part and a connecting part at one side of the main body part, wherein the connecting part comprises a sealing fit section and a shaft end fit section; an oil seal support is arranged at the joint of the machine body and the flywheel shell, an oil seal is arranged at the corresponding sealing matching section of the oil seal support, and sealing rings are arranged between the oil seal support and the machine body and between the oil seal support and the flywheel shell;
a bearing is arranged at the joint of the machine body and the oil seal support, a bearing driving ring is arranged between the inner ring of the bearing and the shaft end matching section, the bearing driving ring is in interference fit with the shaft end matching section, a clamping groove is arranged on the inner ring of the bearing, and a spline matched with the clamping groove is arranged on the bearing driving ring;
the end face of the power output flange, which faces one side of the elastic coupler, is provided with a bearing ring, and the surface of the elastic coupler is provided with a ring groove matched with the bearing ring.
2. The compact start-up charging diesel engine power output structure of claim 1, wherein: the output flange is fixed on the outer elastic coupling piece through screws.
3. The compact start-up charging diesel engine power output structure of claim 1, wherein: and the permanent magnets are uniformly distributed along the center of the elastic coupling.
4. A compact start-up rechargeable diesel engine power take-off structure according to claim 1 or 3, characterized in that: and the outer circumference of the elastic coupling is provided with a dovetail groove, and the permanent magnet is embedded in the dovetail groove.
5. The compact start-up charging diesel engine power output architecture of claim 4, wherein: the permanent magnet is arc-shaped, and the radian of the outer surface of the permanent magnet is consistent with that of the outer wall of the elastic coupling.
6. The compact start-up charging diesel engine power output architecture of claim 4, wherein: the permanent magnet is fixed with the dovetail groove in an auxiliary way through a fastening agent.
7. The compact start-up charging diesel engine power output structure of claim 1, wherein: the flywheel shell is provided with a pressing plate on the inner side, and the electromagnetic coil is arranged between the pressing plate and the iron core.
8. The compact start-up charging diesel engine power output structure of claim 1, wherein: each group of silicon steel sheets are uniformly distributed along the center of the flywheel shell, and electromagnetic coils are wound on the outer surfaces of each group of silicon steel sheets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493635.5A CN117559716A (en) | 2023-11-10 | 2023-11-10 | Compact structure's start-up rechargeable diesel engine power output structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311493635.5A CN117559716A (en) | 2023-11-10 | 2023-11-10 | Compact structure's start-up rechargeable diesel engine power output structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117559716A true CN117559716A (en) | 2024-02-13 |
Family
ID=89812071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311493635.5A Pending CN117559716A (en) | 2023-11-10 | 2023-11-10 | Compact structure's start-up rechargeable diesel engine power output structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117559716A (en) |
-
2023
- 2023-11-10 CN CN202311493635.5A patent/CN117559716A/en active Pending
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