CN218920212U - Paint dipping device for submersible motor - Google Patents
Paint dipping device for submersible motor Download PDFInfo
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- CN218920212U CN218920212U CN202223088547.0U CN202223088547U CN218920212U CN 218920212 U CN218920212 U CN 218920212U CN 202223088547 U CN202223088547 U CN 202223088547U CN 218920212 U CN218920212 U CN 218920212U
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- planetary gear
- submersible motor
- gear mechanism
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- motor stator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
The utility model discloses a paint dipping device for a submersible motor, which belongs to the technical field of motor part processing, wherein a heating rod is arranged in an insulation box body, one end of a universal coupling is connected with one end of a connecting pipe, the other end of the universal coupling is provided with a sealing end cover for connecting the end part of a submersible motor stator, a rotating ring plate is embedded in an annular opening and rotates relative to the annular opening, and the other end of the connecting pipe is coaxially connected with the rotating ring plate and communicated with an hollow annular sealing shell. This application heats the inside oily motor stator of diving of insulation box through being provided with the heating rod at insulation box inside, and then dries the inside lacquer liquid of oily motor stator of diving, carries out rotatory dip coating to oily motor stator's winding, and two sun gears carry out differential rotation, and cooperation universal joint and linear motion platform realize oily motor stator's slope and then realize dipping paint efficiency and row lacquer to oily motor stator of diving, have further improved efficiency.
Description
Technical Field
The utility model belongs to the technical field of motor part machining, and particularly relates to a paint dipping device for a submersible motor.
Background
The dip coating of the stator of the submersible motor is an important link in the production of the submersible motor, and as the slot of the stator of the submersible motor is as long as a few meters, a longer dip time is needed, and the effect of dip coating is directly related to the service life of the submersible motor.
At present, when the oil-immersed motor stator is immersed in paint, the oil-immersed motor stator needs to be rotated, redundant paint liquid needs to be discharged after paint immersing is completed and then dried, and the heat preservation belt and the heating wire are wound on the outer wall of the oil-immersed motor stator in the prior art, so that the mode is complex and low in efficiency.
Disclosure of Invention
The utility model aims to solve the technical problems that when the stator of a submersible motor is immersed with paint, the stator of the submersible motor needs to be rotated, and excessive paint liquid needs to be discharged and dried after the immersing of the paint is completed, and the outer wall of the stator of the submersible motor is wound with a heat preservation belt and a heating wire in the prior art, so that the mode is complicated and the efficiency is low, and further provides a paint immersing device for the submersible motor.
The utility model specifically discloses a paint dipping device for a submersible motor, which comprises the following components: the paint spraying device comprises a base, a linear motion platform, a first planetary gear mechanism, a universal coupling, a sealing end cover, a heating rod, a driving device, a hollow annular sealing shell, a rotating ring plate, a paint passing pipe, a second planetary gear mechanism and a heat insulation box body.
Further, a first connecting rotating shaft is coaxially arranged on the sun gear of the first planetary gear mechanism, one end of the first connecting rotating shaft is coaxially connected with one end of the heating rod, the other end of the first connecting rotating shaft is connected with the driving device, a connecting sleeve is coaxially arranged on the sun gear of the second planetary gear mechanism, one end of the connecting sleeve is connected with the driving device, a second connecting rotating shaft is coaxially arranged at the other end of the heating rod, the second connecting rotating shaft penetrates through the connecting sleeve to be connected with the rotating end of the slip ring connector, the fixed end of the slip ring connector is installed on the heat insulation box body through a support, and the slip ring connector is electrically connected with the heating rod.
Further, the driving device includes: the driving motor is arranged on the insulation box body through the base, and the output end of the driving motor is connected with the connecting sleeve or the first connecting rotating shaft through the synchronous belt wheel group.
Further, the seal end cap includes: the connecting flange is connected with the other end of the universal coupler, the sealing connecting ring is coaxially arranged on the end face of the connecting flange, the end part of the submersible motor stator is arranged in the sealing connecting ring and is connected through bolts, the sealing limiting ring used for limiting the end part of the submersible motor stator is arranged inside the sealing connecting ring, the sealing rubber ring is arranged on the end face of the sealing limiting ring, and a cavity formed between the sealing limiting ring and the connecting flange is communicated with the other end of the hose.
Further, the insulation box includes: the box body is installed on the base, the top of the box body is provided with a box cover, and the box cover is connected with the box body through a hinge.
Further, the case cover includes: the first box cover part and the second box cover part are oppositely arranged on the box body.
Further, a sealing strip is arranged on the contact surface of the box body and the box cover.
Further, the base is fixed with the ground through bolts.
Further, the linear motion platform includes: the platform motor and the screw thread screw pair are arranged on the base, the output end of the platform motor is connected with the threaded rod of the screw thread screw pair, and the sliding block of the screw thread screw pair is provided with the first planetary gear mechanism.
The utility model has the following beneficial effects:
the application heats the inside oily motor stator of diving of insulation box through being provided with the heating rod in insulation box, and then dries the inside lacquer liquid of oily motor stator of diving, and simultaneously through being provided with first planetary gear mechanism and second planetary gear mechanism and then rotatory dip coating to oily motor stator's winding, first planetary gear mechanism and second planetary gear mechanism's sun gear carries out differential rotation simultaneously, and cooperation universal joint and linear motion platform realize oily motor stator's slope and then realize dipping lacquer efficiency and row lacquer to oily motor stator, have further improved efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model;
FIG. 3 is an enlarged view of a portion of FIG. 2A in accordance with the present utility model;
FIG. 4 is an enlarged view of a portion of B of FIG. 2 in accordance with the present utility model;
FIG. 5 is an enlarged view of a portion of C of FIG. 2 in accordance with the present utility model;
in the drawings, the list of components represented by the various numbers is as follows:
the device comprises a base 1, a linear motion platform 2, a platform motor 21, a threaded screw pair 22, a first planetary gear mechanism 3, a universal coupler 4, a sealing end cover 5, a connecting flange 51, a sealing connecting ring 52, a sealing limiting ring 53, a sealing rubber ring 54, a heating rod 6, a first connecting rotating shaft 61, a connecting sleeve 62, a second connecting rotating shaft 63, a driving device 8, a driving motor 81, a synchronous belt wheel set 82, a hollow annular sealing shell 9, a rotating ring plate 10, a paint passing pipe 11, a second planetary gear mechanism 12, an insulation box 13, a box body 131, a box cover 132, a first box cover 1321, a second box cover 1322, a connecting pipe 14, a hose 15, a planet wheel 100, a sun gear 200 and a gear ring 300.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper," "middle," "outer," "inner," and the like indicate an orientation or a positional relationship, and are merely for convenience of describing the present utility model and simplifying the description, but do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Embodiment one: a paint dipping apparatus for a submersible motor is described with reference to fig. 1-5, comprising: the base 1, the linear motion platform 2, the first planetary gear mechanism 3, the universal coupling 4, the sealing end cover 5, the heating rod 6, the driving device 8, the hollow annular sealing shell 9, the rotating ring plate 10, the paint passing pipe 11, the second planetary gear mechanism 12 and the heat insulation box 13, wherein the heat insulation box 13 is arranged on the base 1, the heating rod 6 is arranged inside the heat insulation box 13, the linear motion platform 2 is arranged on the base 1, the linear motion platform 2 is arranged inside the heat insulation box 13, the gear ring 300 of the first planetary gear mechanism 3 is arranged on the linear motion platform 2 through a bracket, the gear ring 300 of the second planetary gear mechanism 12 is arranged on the base 1 through a bracket, the connecting pipes 14 are coaxially arranged on the planetary gears 100 of the first planetary gear mechanism 3 and the second planetary gear mechanism 12, one end of the universal coupling 4 is connected with one end of each connecting pipe 14, the other end of the universal coupling 4 is provided with a sealing end cover 5 for connecting the end part of a submersible motor stator, a hollow annular sealing shell 9 is coaxially arranged on a gear ring 300 of a first planetary gear mechanism 3 and a second planetary gear mechanism 12, an annular opening is formed on one end surface of the hollow annular sealing shell 9, a rotating ring plate 10 is embedded in the annular opening and rotates relative to the annular opening, the other end of a connecting pipe 14 is coaxially connected with the rotating ring plate 10 and communicated with the hollow annular sealing shell 9, a paint passing pipe 11 for paint feeding and discharging is arranged on the rotating ring plate 10, one end of a hose 15 is communicated with the side wall of the connecting pipe 14, the other end of the hose 15 passes through the sealing end cover 5 and is communicated with the submersible motor stator, a driving device 8 which independently drives a sun gear 200 of the first planetary gear mechanism 3 to rotate and a sun gear 200 of the second planetary gear mechanism 12 to rotate is arranged on a heat preservation box 13, this application heats the inside oily motor stator that dives of insulation box 1 through being provided with heating rod 6 inside insulation box 13, and then dries the inside lacquer liquid of oily motor stator that dives, and simultaneously through being provided with first planetary gear mechanism 3 and second planetary gear mechanism 12 and then rotatory dip coating to the winding of oily motor stator, simultaneously sun gear 200 of first planetary gear mechanism 3 and second planetary gear mechanism 12 carries out differential rotation, cooperation universal joint 4 realizes the slope of oily motor stator and then realizes dipping lacquer efficiency and row lacquer to oily motor stator with linear motion platform 2, has further improved efficiency.
The paint pipe 11 is connected with a paint feeding pump and a vacuum pump through pipelines respectively. The paint feeding pump is used for feeding paint and discharging paint, the vacuum pump is used for carrying out vacuum treatment on the inside of the stator, and electromagnetic valves are arranged on pipelines connected with the paint feeding pump and the vacuum pump through the paint passing pipe 11.
The outside of hose 15 is provided with the insulating layer and prevents the solidification of the inside remaining lacquer liquid of hose 15, carries out vacuum treatment after advancing the lacquer process, and most lacquer liquid is taken off this moment, and universal joint 4 top is all arranged in to hose 15 this moment, prevents to take off the inside lacquer liquid of diving oily motor stator when carrying out vacuum treatment.
Embodiment two: on the basis of the first embodiment, referring to fig. 1-5, a first connecting rotating shaft 61 is coaxially disposed on the sun gear 200 of the first planetary gear mechanism 3, one end of the first connecting rotating shaft 61 is coaxially connected with one end of the heating rod 6, the other end of the first connecting rotating shaft 61 is connected with the driving device 8, a connecting sleeve 62 is coaxially disposed on the sun gear 200 of the second planetary gear mechanism 12, one end of the connecting sleeve 62 is connected with the driving device 8, a second connecting rotating shaft 63 is coaxially disposed on the other end of the heating rod 6, the second connecting rotating shaft 63 penetrates through the connecting sleeve 62 to be connected with the rotating end of the slip ring connector 7, the fixed end of the slip ring connector 7 is mounted on the insulation box 13 through a bracket, and the slip ring connector 7 is electrically connected with the heating rod 6.
Embodiment III: the second embodiment is described with reference to fig. 1 to 5, and the driving device 8 includes: the driving motor 81 and the synchronous belt wheel set 82, the driving motor 81 is installed on the insulation box 13 through a base, the output end of the driving motor 81 is connected with the connecting sleeve 62 or the first connecting rotating shaft 61 through the synchronous belt wheel set 82, and in this way, the accuracy of transmission is ensured through the synchronous belt wheel set 82, and the transmission precision is improved.
Embodiment four: the first embodiment is described with reference to fig. 1 to 5, and the sealing end cap 5 includes: the connecting flange 51 is connected with the other end of the universal coupler 4, the sealing connecting ring 52 is coaxially arranged on the end face of the connecting flange 51, the end part of the submersible motor stator is arranged in the sealing connecting ring 52 and is connected through bolts, the sealing limiting ring 53 used for limiting the end part of the submersible motor stator is arranged in the sealing connecting ring 52, the sealing rubber ring 54 is arranged on the end face of the sealing limiting ring 53, a cavity formed between the sealing limiting ring 53 and the connecting flange 51 is communicated with the other end of the hose 15, the hose 15 is provided with a channel for paint and gas, and the sealing limiting ring 53 and the connecting pipe 14 coaxially rotate without the problem of wire interference caused by wire winding.
Fifth embodiment: the first embodiment is described with reference to fig. 1 to 5, and the thermal insulation box 13 includes: the oil-submersible motor comprises a box body 131 and a box cover 132, wherein the box body 131 is arranged on a base 1, the box cover 132 is arranged at the top of the box body 131, the box cover 132 is connected with the box body 131 through a hinge, and the box cover 132 is arranged in such a way that the box cover 132 is convenient for installing an oil-submersible motor stator.
Example six: the fifth embodiment is described with reference to fig. 1 to 5, and the cover 132 includes: the first cover 1321 and the second cover 1322 are disposed on the case body 131 opposite to each other, so that the submersible motor stator is further convenient for multiple users to operate and install.
Embodiment seven: on the basis of the fifth embodiment, referring to fig. 1 to 5, a sealing strip is disposed on the contact surface between the case body 131 and the case cover 132, so as to prevent the temperature in the case body 131 from leaking, and meanwhile, both the case body 131 and the case cover 132 are provided with left and right heat insulation layers.
Example eight: the first embodiment is described with reference to fig. 1 to 5, and the base 1 is fixed to the ground by bolts, so that the base is convenient to install and detach.
Example nine: the first embodiment is described with reference to fig. 1 to 5, and the linear motion platform 2 includes: the base 1 is provided with a platform motor 21 and a screw thread screw pair 22, the output end of the platform motor 21 is connected with the threaded rod of the screw thread screw pair 22, the sliding block of the screw thread screw pair 22 is provided with a first planetary gear mechanism 3, the first planetary gear mechanism 3 is driven to conveniently install the submersible motor stator, and meanwhile, the first planetary gear mechanism 3 is matched to realize the change of the angle of the submersible motor stator during paint discharge.
The working process comprises the following steps:
s1: firstly, connecting two ends of a submersible motor stator to a sealing end cover 5, placing the end of the submersible motor stator in a sealing connecting ring 52 and contacting with a sealing rubber ring 54, and then connecting and fixing the end of the submersible motor stator with the sealing connecting ring 52 through bolts;
s2: the electromagnetic valve on the pipeline connected with the paint feeding pump and the paint passing pipe 11 is opened, paint liquid flows through the hollow annular sealing shell 9, the connecting pipe 14, the hose 15, the cavity formed between the sealing limiting ring 53 and the connecting flange 51 from the paint passing pipe 11 and finally enters the interior of the submersible motor stator, and the electromagnetic valve on the pipeline connected with the paint feeding pump and the paint passing pipe 11 is closed;
s3: the electromagnetic valve on the pipeline connecting the vacuum pump and the paint passing pipe 11 is opened, the inside of the submersible motor stator is subjected to vacuum treatment, and the electromagnetic valve on the pipeline connecting the vacuum pump and the paint passing pipe 11 is closed after the vacuum treatment is finished, so that the submersible motor stator is in a horizontal state;
s4: closing the first cover 1321 and the second cover 1322;
s5: starting a driving motor 81, wherein the driving motor 81 uniformly drives a synchronous belt wheel set 82 to rotate so as to drive a connecting sleeve 62 and a first connecting rotating shaft 61 to synchronously rotate, and further drives a sun wheel 200 of a first planetary gear mechanism 3 and a second planetary gear mechanism 12 to rotate, and further drives a planet wheel 100 to rotate, and further drives a submersible motor stator to rotate, and at the moment, paint liquid in the submersible motor stator uniformly contacts with windings in the submersible motor stator for 3.5 hours;
s6: the rotation speed of the sun gear 200 of the second planetary gear mechanism 12 is controlled to be reduced, then the speed is kept constant, meanwhile, the platform motor 21 drives the first planetary gear mechanism 3 on the screw thread lead screw pair 22 to move, at the moment, the angle of the stator of the submersible motor is changed, an electromagnetic valve on a pipeline connected with the paint feeding pump and the paint passing pipe 11 is opened, and after the excessive paint liquid is led out, the electromagnetic valve is closed;
s7: the sun gear 200 of the second planetary gear mechanism 12 is controlled to be increased in rotation speed and then kept at a constant speed, the sun gear 200 of the second planetary gear mechanism 12 is controlled to be the same as the sun gear 200 of the first planetary gear mechanism 3 in rotation speed, meanwhile, the platform motor 21 is controlled to drive the first planetary gear mechanism 3 on the screw thread screw pair 22 to move, so that the submersible motor stator returns to the horizontal state, the heating rod 6 starts to work, revolution is carried out while the submersible motor stator rotates, the whole temperature is controlled to be 80 ℃, the mode of detecting the control temperature is described in the prior art, and the submersible motor stator is removed after paint is solidified.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. A paint dipping device for a submersible motor, comprising: the base (1) and the heat preservation box body (13), be provided with heat preservation box body (13) on base (1), heat preservation box body (13) inside is provided with heating rod (6), be provided with rectilinear motion platform (2) on base (1), rectilinear motion platform (2) are arranged in inside heat preservation box body (13), ring gear (300) of first planetary gear mechanism (3) are installed on rectilinear motion platform (2) through the support, ring gear (300) of second planetary gear mechanism (12) are installed on base (1) through the support, be provided with connecting pipe (14) on planet wheel (100) of first planetary gear mechanism (3) and second planetary gear mechanism (12) coaxially, universal joint (4) one end links to each other with the one end of connecting pipe (14), the other end of universal joint (4) is provided with sealed end cover (5) that are used for connecting the submersible motor stator tip, coaxial installation hollow annular seal housing (9) on ring gear (300) of first planetary gear mechanism (3) and second planetary gear mechanism (12), hollow annular seal housing (9) one end face opening is provided with annular disk (10) and is inlayed annular disk (10) and is connected with coaxial annular disk (14) and is inlayed annular disk (14) and is connected with coaxial annular disk (14), be provided with on rotating ring board (10) and be used for advancing lacquer and row lacquer's lacquer pipe (11), hose (15) one end and connecting pipe (14) lateral wall intercommunication, hose (15) other end pass sealed end cover (5) and submersible motor stator intercommunication, be provided with on insulation can body (13) and independently drive sun gear (200) rotation of first planetary gear mechanism (3) and sun gear (200) pivoted drive arrangement (8) of second planetary gear mechanism (12) respectively.
2. The paint dipping device for the submersible motor according to claim 1, wherein a first connecting rotating shaft (61) is coaxially arranged on a sun gear (200) of the first planetary gear mechanism (3), one end of the first connecting rotating shaft (61) is coaxially connected with one end of a heating rod (6), the other end of the first connecting rotating shaft (61) is connected with a driving device (8), a connecting sleeve (62) is coaxially arranged on the sun gear (200) of the second planetary gear mechanism (12), one end of the connecting sleeve (62) is connected with the driving device (8), a second connecting rotating shaft (63) is coaxially arranged at the other end of the heating rod (6), the second connecting rotating shaft (63) penetrates through the connecting sleeve (62) to be connected with the rotating end of a slip ring connector (7), and the fixed end of the slip ring connector (7) is mounted on a heat insulation box (13) through a bracket and is electrically connected with the heating rod (6).
3. A paint dipping apparatus for a submersible motor according to claim 2, wherein the drive means (8) comprises: the driving motor (81) and the synchronous belt wheel set (82), the driving motor (81) is arranged on the insulation box body (13) through a base, and the output end of the driving motor (81) is connected with the connecting sleeve (62) or the first connecting rotating shaft (61) through the synchronous belt wheel set (82).
4. A paint dipping apparatus for a submersible motor according to claim 1, wherein the seal end cap (5) comprises: the connecting flange (51), sealing connection ring (52), sealing limiting ring (53) and sealing rubber ring (54), connecting flange (51) link to each other with universal joint (4) other end, coaxial sealing connection ring (52) that are provided with on flange (51) terminal surface, and in sealing connection ring (52) were arranged in to the submersible motor stator tip and pass through bolted connection, sealing connection ring (52) inside was provided with and is used for carrying out spacing sealing limiting ring (53) to submersible motor stator tip, is provided with sealing rubber ring (54) on sealing limiting ring (53) terminal surface, and cavity and hose (15) other end intercommunication that forms between sealing limiting ring (53) and connecting flange (51).
5. A paint dipping apparatus for a submersible motor according to claim 1, wherein the insulation box (13) comprises: the novel box comprises a box body (131) and a box cover (132), wherein the box body (131) is arranged on a base (1), the box cover (132) is arranged at the top of the box body (131), and the box cover (132) is connected with the box body (131) through a hinge.
6. A paint dipping apparatus for submersible electric motors as recited in claim 5 wherein the tank cover (132) comprises: a first cover part (1321) and a second cover part (1322), wherein the first cover part (1321) and the second cover part (1322) are arranged on the box body (131) in a way of being opposite to each other.
7. The paint dipping apparatus for a submersible motor as recited in claim 5, wherein a sealing strip is provided on a contact surface of the case body (131) and the case cover (132).
8. A paint dipping apparatus for a submersible motor according to claim 1, wherein the base (1) is secured to the ground by bolts.
9. A paint dipping apparatus for a submersible motor according to claim 1, wherein the linear motion platform (2) comprises: platform motor (21) and screw thread screw pair (22), be provided with platform motor (21) and screw thread screw pair (22) on base (1), the output of platform motor (21) links to each other with the threaded rod of screw thread screw pair (22), installs first planetary gear mechanism (3) on the slider of screw thread screw pair (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223088547.0U CN218920212U (en) | 2022-11-16 | 2022-11-16 | Paint dipping device for submersible motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223088547.0U CN218920212U (en) | 2022-11-16 | 2022-11-16 | Paint dipping device for submersible motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218920212U true CN218920212U (en) | 2023-04-25 |
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ID=86041756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223088547.0U Active CN218920212U (en) | 2022-11-16 | 2022-11-16 | Paint dipping device for submersible motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218920212U (en) |
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2022
- 2022-11-16 CN CN202223088547.0U patent/CN218920212U/en active Active
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