CN213857049U - Sleeve installation device - Google Patents
Sleeve installation device Download PDFInfo
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- CN213857049U CN213857049U CN202022997134.9U CN202022997134U CN213857049U CN 213857049 U CN213857049 U CN 213857049U CN 202022997134 U CN202022997134 U CN 202022997134U CN 213857049 U CN213857049 U CN 213857049U
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- sleeve pipe
- clamping
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Abstract
The utility model discloses a sleeve pipe installation device, include: the sleeve clamping component is used for clamping the sleeve; the first power rotating assembly is used for driving the sleeve clamping assembly to rotate around the vertical shaft; the horizontal moving component can drive the sleeve clamping component to move along the horizontal direction; the second power rotating assembly is used for driving the sleeve clamping assembly to rotate around the axis of the second power rotating assembly; the third power rotating assembly is used for driving the sleeve clamping assembly to rotate along the vertical direction; and the control device is respectively connected with the first power rotating assembly, the horizontal moving assembly, the second power rotating assembly and the third power rotating assembly so as to control the sleeve clamping assembly to move to a preset position for sleeve installation. The device enables automated control of four axes to mount the cannula to a preset position. The device is simple to operate and high in reliability.
Description
Technical Field
The utility model relates to a metallurgical auxiliary assembly technical field, more specifically say, relate to a sleeve pipe installation device.
Background
The sleeve is an important component in the continuous casting steel casting process, and the steel can be protected and cast by filling the sleeve on the steel, so that the oxidation ratio of the molten steel and the temperature loss of the molten steel are effectively reduced, and the tapping quality is improved. At present, most steel mills at home and abroad use pure mechanical operation arms to complete the installation of the sleeve, workers need to participate in the whole process on site in the installation process, the labor intensity is high, the area is a molten steel area, molten steel splashes at high temperature and high dust and sometimes, the working environment of the workers is severe, and the safety risk is high.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a sleeve pipe installation device to can realize sleeve pipe installation's automation, reduce workman intensity of labour, reduce the operation risk.
In order to achieve the first object, the present invention provides the following technical solutions:
a casing mounting device comprising:
the sleeve clamping component is used for clamping the sleeve;
the first power rotating assembly is used for driving the sleeve clamping assembly to rotate around a vertical shaft;
the horizontal moving component can drive the sleeve clamping component to move along the horizontal direction;
the second power rotating assembly is used for driving the sleeve clamping assembly to rotate around the axis of the sleeve clamping assembly;
the third power rotating assembly is used for driving the sleeve clamping assembly to rotate along the vertical direction;
and the control device is respectively connected with the first power rotating assembly, the horizontal moving assembly, the second power rotating assembly and the third power rotating assembly so as to control the sleeve clamping assembly to move to a preset position for sleeve installation.
Preferably, the casing gripping assembly comprises:
the sleeve pipe centre gripping arm rather than the sleeve pipe grip slipper that sets firmly, be equipped with two coaxial horizontal location pins that set up relatively on the sleeve pipe grip slipper and with whole the sleeve pipe grip ring that the horizontal location pin rotates to be connected, work as the third power gyration subassembly drives when the sleeve pipe centre gripping subassembly rotates along vertical direction, the sleeve pipe grip ring drives the sleeve pipe and winds the horizontal location pin rotates and makes the sleeve pipe be in vertical state.
Preferably, the first power swivel assembly comprises:
the fixed base, locate last first power piece of fixed base and with the first transmission piece that the output of first power piece is connected, first transmission piece include with the driving gear that the output of first power piece is connected and with driven gear of driving gear meshing.
Preferably, the second power swivel assembly is provided on the first power swivel assembly, the second power swivel assembly comprising:
the sleeve pipe clamping device comprises a second power part, a second transmission part and a rotating arm body which are sequentially and fixedly connected, wherein the tail end of the rotating arm body is fixedly connected with the sleeve pipe clamping component in a detachable mode, and the second power part is driven by the rotating arm body to rotate around the axis of the sleeve pipe clamping component.
Preferably, both ends of the horizontal moving assembly are detachably and fixedly connected with the rotating arm body and the sleeve clamping assembly respectively, and the horizontal moving assembly comprises:
one end of the telescopic oil cylinder is connected with the rotating arm body, and the other end of the telescopic oil cylinder is provided with a telescopic arm;
the telescopic arm is connected with the sleeve clamping assembly;
the telescopic oil cylinder is hinged and fixed with the rotating arm body and the telescopic arm respectively.
Preferably, the boom body includes:
the fixing part is used for being connected with the second transmission piece;
the horizontal moving assembly is arranged in the mounting cavity and is hinged and fixed with the mounting shell, and the end wall of the mounting shell is provided with a mounting pipe body of which one end is communicated with the mounting cavity; the telescopic arm is sleeved in the installation pipe body, and the extending end of the telescopic oil cylinder drives the telescopic arm to axially move relative to the installation pipe body.
Preferably, the method further comprises the following steps:
the rotary support seat is arranged on the first power rotary component and used for mounting the second power rotary component, and a swing seat used for supporting the second power rotary component and a support rod used for fixing the swing seat are respectively arranged on the rotary support seat;
and two ends of the third power rotation assembly are respectively hinged with the rotation supporting seat and the bottom of the swinging seat so as to drive the swinging seat and the second power rotation assembly thereon to rotate around the supporting rod along the vertical direction.
Preferably, a bearing is arranged between the swinging seat and the rotating arm body.
Preferably, the third power swivel assembly is a cylinder, a pneumatic cylinder or a hydraulic cylinder.
Preferably, the remote control device is used for remote control, and the remote control device is in wireless communication connection with the control device.
The utility model provides a sleeve pipe installation device, include: the sleeve clamping component is used for clamping the sleeve; the first power rotating assembly is used for driving the sleeve clamping assembly to rotate around the vertical shaft; the horizontal moving component can drive the sleeve clamping component to move along the horizontal direction; the second power rotating assembly is used for driving the sleeve clamping assembly to rotate around the axis of the second power rotating assembly; the third power rotating assembly is used for driving the sleeve clamping assembly to rotate along the vertical direction; and the control device is respectively connected with the first power rotating assembly, the horizontal moving assembly, the second power rotating assembly and the third power rotating assembly so as to control the sleeve clamping assembly to move to a preset position for sleeve installation.
Compared with the prior art, the utility model provides a sleeve pipe installation device has following technological effect:
the device drives sleeve pipe centre gripping subassembly through first power gyration subassembly respectively and rotates around vertical axle, the horizontal migration subassembly drives sleeve pipe centre gripping subassembly and removes along the horizontal direction, second power gyration subassembly drives sleeve pipe centre gripping subassembly and rotates around self axis and third power gyration subassembly drives sleeve pipe centre gripping subassembly and rotates along vertical direction, in order to follow vertical axle rotation to the sleeve pipe respectively, the rotation around vertical direction, the removal of horizontal direction and the rotation of self axis move, realize the automated control of four axles, in order to install the sleeve pipe to preset position. The device is simple to operate and high in reliability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a casing installation device according to an embodiment of the present invention.
The drawings are numbered as follows:
the device comprises a fixed base 1, a first power part 2, a driving gear 3, a driven gear 4, a rotary supporting seat 5, a third power rotary assembly 6, a swing seat 7, a second power part 8, a second transmission part 9, a rotating arm body 10, a telescopic oil cylinder 11, a connecting hinge 12, a telescopic arm 13, a sleeve clamping arm 14, a sleeve 15 and a sleeve clamping ring 16.
Detailed Description
The embodiment of the utility model discloses sleeve pipe installation device to can realize the automation of bushing installation, reduce workman intensity of labour, reduce the operation risk.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a bushing installation apparatus according to an embodiment of the present invention.
In a specific embodiment, the present invention provides a casing installation device, comprising:
a casing gripping assembly to grip the casing 15;
the first power rotating assembly is used for driving the sleeve clamping assembly to rotate around the vertical shaft;
the horizontal moving component can drive the sleeve clamping component to move along the horizontal direction;
the second power rotating assembly is used for driving the sleeve clamping assembly to rotate around the axis of the second power rotating assembly;
the third power rotating assembly 6 is used for driving the sleeve clamping assembly to rotate in the vertical direction;
and the control device is respectively connected with the first power rotating assembly, the horizontal moving assembly, the second power rotating assembly and the third power rotating assembly 6 so as to control the sleeve clamping assembly to move to a preset position to install the sleeve 15.
The sleeve 15 may be clamped by the sleeve clamping assembly by providing a clamping ring, the diameter of which is set according to the diameter of the sleeve 15. The sleeve pipe centre gripping subassembly sets up the grip ring rather than rotating the connection between two end walls of yoke if setting up to the yoke, supports sleeve pipe 15 through the grip ring, and sleeve pipe 15 is vertical state setting.
First power gyration subassembly drives sleeve pipe centre gripping subassembly and rotates around vertical axle, and then drives sleeve pipe 15 and rotate around vertical axle, and first power gyration subassembly is fixed with sleeve pipe centre gripping subassembly accessible screw etc. perhaps, indirectly fixed through other structures, as above horizontal migration subassembly isotructure, the combination that first power gyration subassembly, horizontal migration subassembly, second power gyration subassembly and third power gyration subassembly 6 and sleeve pipe centre gripping subassembly's mounted position formed is all in the utility model discloses a within the protection scope can set up as required. For example, in one embodiment, the horizontal displacement assembly is disposed between a first power swivel assembly and a second power swivel assembly, the second power swivel assembly being directly secured to the casing gripping assembly by a threaded fastener. The first power rotating assembly indirectly drives the sleeve clamping assembly to rotate by driving the second power rotating assembly to rotate around the vertical shaft.
In one embodiment, the casing 15 is clamped by a casing clamping assembly, and a first power swivel assembly rotates the casing 15 about a vertical axis. The first power swivel assembly is preferably a servo motor connected to a transmission member, such as a gear train, to effect power transmission. The sleeve 15 is driven to rotate by the first power swivel assembly so as to adjust the position of the sleeve 15 on the horizontal plane according to the preset position.
The horizontal migration subassembly can set up to hydro-cylinder, cylinder or pneumatic cylinder, or in an embodiment, sets up to slide rail slider mechanism, or for the combination of motor and rack and pinion mechanism, all is in the utility model discloses a protection scope.
The second power swivel assembly drives the sleeve clamping assembly to rotate around the axis of the second power swivel assembly so as to adjust the included angle between the sleeve 15 and the vertical direction. The structure of the second power rotating assembly is the same as that of the first power rotating assembly, so that the structure of the device is simplified, and meanwhile, the device is convenient to arrange. The third power rotating assembly 6 drives the sleeve clamping assembly to rotate in the vertical direction so as to adjust the pitch angle of the sleeve clamping assembly.
The control device is preferably a control device such as an operation box, a control panel or a touch screen, and the specific form of the control device is selected according to needs.
Compared with the prior art, the utility model provides a sleeve pipe installation device has following technological effect:
the device drives sleeve pipe centre gripping subassembly through first power gyration subassembly respectively and rotates around vertical axle, the horizontal migration subassembly drives sleeve pipe centre gripping subassembly and removes along the horizontal direction, second power gyration subassembly drives sleeve pipe centre gripping subassembly and rotates around self axis and third power gyration subassembly 6 drives sleeve pipe centre gripping subassembly and rotates along vertical direction, in order to rotate along vertical axle to the sleeve pipe respectively, the rotation around vertical direction, the removal of horizontal direction and the rotation of self axis move, realize the automated control of four axles, in order to install the sleeve pipe to preset position. The device is simple to operate and high in reliability.
Specifically, the ferrule holding assembly comprises:
the sleeve clamping arm 14 and a sleeve clamping seat fixedly arranged with the sleeve clamping arm are oppositely provided with two coaxially arranged horizontal positioning pins and a sleeve clamping ring 16 rotationally connected with all the horizontal positioning pins.
The first end of sleeve pipe centre gripping arm 14 is provided with the sleeve pipe grip slipper rather than the integral type setting, and the sleeve pipe grip slipper is U type seat, sets up the mounting hole that is used for installing horizontal positioning round pin respectively on two lateral walls of U type seat, and sleeve pipe grip slipper 16 is preferably the ring, is equipped with on the circumference lateral wall of ring to be used for with the fixed mounting hole of horizontal positioning round pin. It can be understood that the axes of the two horizontal positioning pins pass through the circle center of the circular ring, so that the sleeve clamping ring 16 can rotate around the horizontal positioning pin, and therefore when the third power swivel assembly 6 drives the sleeve clamping assembly to rotate along the vertical direction, the sleeve clamping ring 16 drives the sleeve 15 to rotate around the horizontal positioning pin, so that the sleeve 15 is in a vertical state, and the sleeve 15 is convenient to install and align.
Further, the first power swivel assembly comprises:
the fixed base 1, locate first power piece 2 on the fixed base 1 and with the first transmission piece that the output of first power piece 2 is connected, first transmission piece includes driving gear 3 and the driven gear 4 with driving gear 3 meshing that is connected with the output of first power piece 2.
The stationary base 1 is disposed on the ground or other work platform to support the structures thereon, preferably the horizontal moving assembly, the second power swivel assembly and the third power swivel assembly 6 are all disposed on the stationary base 1. First power component 2 is servo motor, and driving gear 3 is connected with servo motor's output, and driven gear 4 is connected with second power gyration subassembly to realize power transmission. Preferably, a control device is provided on the stationary base 1.
In one embodiment, a second power swivel assembly is provided on the first power swivel assembly, the second power swivel assembly comprising:
second power spare 8, second driving medium 9 and rocking arm body 10 of fixed connection in proper order, the terminal and the sleeve pipe centre gripping subassembly detachable fixed connection of rocking arm body 10, second power spare 8 drives the sleeve pipe centre gripping subassembly through rocking arm body 10 and rotates around self axis.
The rotating arm body 10 and the sleeve clamping arm are fixed through a threaded fastener, the second power part 8 is a servo motor, the second transmission part 9 is a gear transmission mechanism, and the output end of the servo motor drives the rotating arm body 10 to rotate around the axis of the rotating arm body 10 through the gear transmission mechanism. The second power rotary component is connected with the driven gear 4 of the first transmission component so as to rotate around the vertical shaft under the driving of the first power rotary component.
Further, a horizontal movement assembly is provided between the second power swivel assembly and the casing gripping assembly to optimize the device structure for a compact arrangement in space. The two ends of the horizontal moving assembly are respectively and fixedly connected with the rotating arm body 10 and the sleeve clamping assembly in a detachable mode, such as a threaded fastener. Wherein, horizontal migration subassembly includes: a telescopic oil cylinder 11 with one end connected with the rotating arm body 10 and the other end provided with a telescopic arm 13; a telescopic arm 13 for connection with the casing gripping assembly. It can be understood that the second power part 8, the second transmission part 9, the boom body 10, the telescopic cylinder 11, the telescopic arm 13 and the casing clamping assembly are arranged in sequence along the axis direction, and the boom body 10, the telescopic cylinder 11, the telescopic arm 13 and the casing clamping assembly are driven by the second power part 8 to rotate around the axis. Based on this, in order to reduce the torsion force that telescopic cylinder 11 received in the rotation process, telescopic cylinder 11 hinges fixedly with rocking arm body 10 and telescopic arm 13 respectively to convert rigid connection into flexible connection, wherein, be equipped with connecting hinge 12 between telescopic cylinder 11's output and telescopic arm 13, with optimization connection mode.
Further, in order to facilitate the arrangement of the horizontal movement assembly on the boom body 10, the boom body 10 includes:
a fixing part for connecting with the second transmission member 9;
the horizontal moving assembly is arranged in the installation cavity and is hinged and fixed with the installation shell, and the end wall of the installation shell is provided with an installation pipe body of which one end is communicated with the installation cavity; the telescopic arm 13 is sleeved in the installation pipe body, and the extending end of the telescopic oil cylinder 11 drives the telescopic arm 13 to axially move relative to the installation pipe body.
The fixing part is preferably integrally arranged with the fixing part, and one end of the fixing part protrudes from one side end wall of the mounting shell to be arranged in the mounting cavity so as to be hinged and fixed with the telescopic oil cylinder 11. The other side end wall of installation casing is equipped with the installation body, and the installation body communicates with the installation cavity, and flexible arm 13 suit is in the installation cavity and is connected through connecting hinge 12 with flexible hydro-cylinder 11, and under the drive of flexible hydro-cylinder 11, flexible arm 13 slides for the installation body. The axis of the mounting tube is collinear with the axis of the swivel arm body 10.
In this particular embodiment, to better mount the second power swivel assembly on the first power swivel assembly, the apparatus further comprises:
the rotary supporting seat 5 is arranged on the first power rotary component and used for mounting the second power rotary component, and the rotary supporting seat 5 is respectively provided with a swing seat 7 used for supporting the second power rotary component and a supporting rod used for fixing the swing seat 7. The rotary support base 5 is fixed to the driven gear 4 of the first transmission member, and further, the first driven member is provided as a gear shaft, thereby being fixed to the rotary support base 5. And a group of end walls oppositely arranged on the rotary supporting seat 5 are respectively provided with a mounting hole for mounting the supporting rod. The swing seat 7 is rotatably connected with the rotary supporting seat 5 through a supporting rod. Further, the second transmission member 9 is also disposed on the swing seat 7, one end of the boom body 10 is fitted on the swing seat 7, and a bearing is disposed between the swing seat 7 and the boom body 10 to reduce frictional resistance.
In one embodiment, two ends of the third power swivel assembly 6 are hinged to the bottom of the swivel support base 5 and the swing base 7 respectively, so as to drive the swing base 7 and the second power swivel assembly thereon to rotate around the support rod in the vertical direction for adjusting the pitch angle. Wherein, the third power rotary component 6 is an oil cylinder, an air cylinder or a hydraulic cylinder, and the structure is simple and convenient to set.
On the basis of the above embodiments, the remote control device for remote control is further included, and the remote control device and the control device are in wireless communication connection. If connect through wiFi module, zigBee module, bluetooth module or other wireless communication methods, thereby in order to realize the remote control of device, need not the operation personnel manual operation simultaneously, reduce operation personnel's intensity of labour.
In the device, the rotary supporting seat 5 rotates by a certain angle through the first rotary power component, the third power rotary component 6 is controlled to act to lift the sleeve 15 to reach a preset height, and the second power component 8 is controlled to adjust the posture of the sleeve 15 so that the sleeve can pass through a certain installation space; the angle of the rotary supporting seat 5 is further adjusted by controlling the first rotary power component, the posture of the sleeve 15 is adjusted to be in a vertical state by controlling the second power component 8, the telescopic oil cylinder 11 and the first power component 2 are controlled to enable the central line of the sleeve 15 to coincide with the center of the ladle outlet, the joint of the ladle outlet and the sleeve 15 is guaranteed, the pressure of the third power rotary component 6 is maintained, and fixed jacking force is provided.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A casing mounting device, comprising:
the sleeve clamping component is used for clamping the sleeve;
the first power rotating assembly is used for driving the sleeve clamping assembly to rotate around a vertical shaft;
the horizontal moving component can drive the sleeve clamping component to move along the horizontal direction;
the second power rotating assembly is used for driving the sleeve clamping assembly to rotate around the axis of the sleeve clamping assembly;
the third power rotating assembly is used for driving the sleeve clamping assembly to rotate along the vertical direction;
and the control device is respectively connected with the first power rotating assembly, the horizontal moving assembly, the second power rotating assembly and the third power rotating assembly so as to control the sleeve clamping assembly to move to a preset position for sleeve installation.
2. The ferrule mounting device of claim 1, wherein the ferrule holding assembly comprises:
the sleeve pipe centre gripping arm rather than the sleeve pipe grip slipper that sets firmly, be equipped with two coaxial horizontal location pins that set up relatively on the sleeve pipe grip slipper and with whole the sleeve pipe grip ring that the horizontal location pin rotates to be connected, work as the third power gyration subassembly drives when the sleeve pipe centre gripping subassembly rotates along vertical direction, the sleeve pipe grip ring drives the sleeve pipe and winds the horizontal location pin rotates and makes the sleeve pipe be in vertical state.
3. The casing mounting arrangement of claim 1, wherein the first power swivel assembly comprises:
the fixed base, locate last first power piece of fixed base and with the first transmission piece that the output of first power piece is connected, first transmission piece include with the driving gear that the output of first power piece is connected and with driven gear of driving gear meshing.
4. The casing mounting apparatus of claim 1 wherein the second power swivel assembly is provided on the first power swivel assembly, the second power swivel assembly comprising:
the sleeve pipe clamping device comprises a second power part, a second transmission part and a rotating arm body which are sequentially and fixedly connected, wherein the tail end of the rotating arm body is fixedly connected with the sleeve pipe clamping component in a detachable mode, and the second power part is driven by the rotating arm body to rotate around the axis of the sleeve pipe clamping component.
5. The casing mounting device according to claim 4, wherein both ends of the horizontal moving assembly are detachably and fixedly connected with the rotating arm body and the casing clamping assembly respectively, and the horizontal moving assembly comprises:
one end of the telescopic oil cylinder is connected with the rotating arm body, and the other end of the telescopic oil cylinder is provided with a telescopic arm;
the telescopic arm is connected with the sleeve clamping assembly;
the telescopic oil cylinder is hinged and fixed with the rotating arm body and the telescopic arm respectively.
6. The cannula mounting device of claim 5, wherein the boom body comprises:
the fixing part is used for being connected with the second transmission piece;
the horizontal moving assembly is arranged in the mounting cavity and is hinged and fixed with the mounting shell, and the end wall of the mounting shell is provided with a mounting pipe body of which one end is communicated with the mounting cavity; the telescopic arm is sleeved in the installation pipe body, and the extending end of the telescopic oil cylinder drives the telescopic arm to axially move relative to the installation pipe body.
7. The ferrule mounting device of claim 4, further comprising:
the rotary support seat is arranged on the first power rotary component and used for mounting the second power rotary component, and a swing seat used for supporting the second power rotary component and a support rod used for fixing the swing seat are respectively arranged on the rotary support seat;
and two ends of the third power rotation assembly are respectively hinged with the rotation supporting seat and the bottom of the swinging seat so as to drive the swinging seat and the second power rotation assembly thereon to rotate around the supporting rod along the vertical direction.
8. The bushing mounting apparatus of claim 7 wherein a bearing is disposed between said swing seat and said boom body.
9. The casing mounting apparatus of claim 1 wherein the third power swivel assembly is a cylinder, an air cylinder or a hydraulic cylinder.
10. A cannula mounting device according to any of claims 1-9, further comprising a remote control device for remote control, the remote control device and the control device being connected in wireless communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022997134.9U CN213857049U (en) | 2020-12-14 | 2020-12-14 | Sleeve installation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022997134.9U CN213857049U (en) | 2020-12-14 | 2020-12-14 | Sleeve installation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213857049U true CN213857049U (en) | 2021-08-03 |
Family
ID=77067888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022997134.9U Active CN213857049U (en) | 2020-12-14 | 2020-12-14 | Sleeve installation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213857049U (en) |
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2020
- 2020-12-14 CN CN202022997134.9U patent/CN213857049U/en active Active
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