CN220521938U - Adjustable telescopic heightening piece device - Google Patents
Adjustable telescopic heightening piece device Download PDFInfo
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- CN220521938U CN220521938U CN202320003690.0U CN202320003690U CN220521938U CN 220521938 U CN220521938 U CN 220521938U CN 202320003690 U CN202320003690 U CN 202320003690U CN 220521938 U CN220521938 U CN 220521938U
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- telescopic
- fixed sleeve
- wall
- back plate
- ejector rod
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- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 abstract description 18
- 238000009434 installation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The utility model discloses an adjustable telescopic heightening piece device, which comprises a base mechanism and a telescopic ejector rod mechanism, wherein the base mechanism is arranged on the base mechanism; the base mechanism comprises a back plate, a fixed sleeve connected with one side of the back plate and a translation driving mechanism arranged on the back plate; one end of the telescopic ejector rod mechanism is movably inserted into the fixed sleeve and connected with the translation driving mechanism. The utility model is arranged between the wall-attached support and the peripheral wall surface of the building, when the wall surface passes through a change layer area with the inward shrinkage change, the expansion adjustment can be carried out, so that the distance between the lifting protection platform frame structure of the high-rise building and the peripheral wall surface of the building can be adjusted, the normal development of engineering is ensured, and when the frame body climbs through the peripheral wall surface of the building, the expansion adjustment can be carried out only on the device after the wall surface of the high-rise building passes through the change layer area with the inward shrinkage change, so that the distance between the frame body structure and the wall surface is returned to the normal position, the whole heightening piece is not required to be disassembled and replaced like the conventional operation, the working hours can be saved, and the working efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of high-rise building construction safety protection, in particular to an adjustable telescopic heightening piece device.
Background
As shown in FIG. 1, the thickness of the shear wall of the core tube of the high-rise building is designed to be generally equal to the thickness of the bottom layer, and then the outer wall surface of the shear wall is gradually reduced at intervals of a few layers upwards.
The high-rise construction lifting protection platform is used as a special safety protection platform for peripheral construction of a high-rise building, the height of a frame body of the high-rise building is about 4.5 floors, the distance between the frame body structure and a wall surface is constant, and the protection platform frame body is connected with a wall-attached support fixed on an outer edge structure of the building through a machine position guide rail.
And each machine position guide rail of the frame body is connected with floors, and most of the machine position guide rails are provided with 3 wall-attached supports (1 wall-attached support is arranged on each floor), when the frame body is used on the peripheral wall surface of the building core tube, and when the thickness of the wall surface is changed, when the frame body climbs and passes through a wall thickness inward-shrinking change layer, the wall-attached supports are lifted by a lifting piece, so that the 3 wall-attached supports are positioned on the same vertical plane, and at the moment, the distance between the frame body and the peripheral wall surface of the building core tube can be larger than that of the original wall surface.
When the frame body climbs 3 wall-attached supports, and therefore, after the change layer is passed, in order to recover the distance between the frame body structure and the building wall surface before the change layer, the padded heightening parts are removed when the frame body passes the change layer, and because the high-rise construction lifting protection platform is heavier, the load born by each wall-attached support reaches about 4 tons, the heightening parts are removed only by the aid of tools such as jacks, and the attachment points of each support are at least more than hundred parts, so that the operation is time-consuming and unsafe.
Disclosure of Invention
The utility model aims to provide an adjustable telescopic heightening piece device which is arranged between a wall-attached support and a peripheral wall surface of a building, when the distance between a lifting protection platform frame body structure of a high-rise building and the peripheral wall surface of the building is adjusted through a change layer area with inward shrinkage change of the peripheral wall surface of the building, the distance between the wall-attached support and the peripheral wall surface of the building can be adjusted, so that the normal development of engineering is ensured, when the frame body climbs through a peripheral wall of the building, after the change layer area with inward shrinkage change is arranged, the device can be only subjected to telescopic adjustment, so that the distance between the frame body structure and the wall surface is returned to a normal position, the whole heightening piece is not required to be disassembled and replaced like conventional operation, the use of the frame body is safer, working hours can be saved, and the working efficiency is greatly improved.
In order to achieve the above purpose, the following technical scheme is adopted:
an adjustable telescopic heightening piece device comprises a base mechanism and a telescopic ejector rod mechanism; the base mechanism comprises a back plate, a fixed sleeve connected with one side of the back plate and a translation driving mechanism arranged on the back plate; one end of the telescopic ejector rod mechanism is movably inserted into the fixed sleeve and is connected with the translation driving mechanism; one end of the telescopic ejector rod mechanism, which is inserted into the fixed sleeve, is also provided with a first guide pulley which is clung to the inner wall of the fixed sleeve, and the inner wall of the fixed sleeve is also provided with a first limiting block; the translation driving mechanism is used for driving the telescopic ejector rod mechanism to do translation telescopic motion in the fixed sleeve, and the first limiting block is used for limiting the stroke of the telescopic ejector rod mechanism doing translation telescopic motion.
Further, one end of the fixed sleeve is connected with the backboard, and the other end of the fixed sleeve is also provided with a limiting cavity; the translation driving mechanism comprises a mounting clearance hole which is formed in the back plate and penetrates through the limiting cavity, an adjusting screw rod assembly which is mounted in the mounting clearance hole and one end of which is inserted into the limiting cavity, and a screw rod fixing plate which is arranged in the limiting cavity and used for limiting and fixing the adjusting screw rod assembly; one end of the telescopic ejector rod mechanism is movably inserted into the limiting cavity and connected with the adjusting screw rod assembly.
Further, the telescopic ejector rod mechanism comprises a first mounting plate, a telescopic sleeve connected with one side of the first mounting plate and a nut fixing plate arranged at one end of the telescopic sleeve; one end of the telescopic sleeve, provided with a nut fixing plate, is movably inserted into the limiting containing cavity, and the nut fixing plate is also provided with a nut mounting hole; the adjusting screw rod assembly is connected with the nut fixing plate through the nut mounting hole.
Further, two sides of the upper part of one end of the telescopic sleeve, which is provided with the nut fixing plate, are respectively provided with a first pin shaft fixing plate, and a first pin shaft is further connected between the two first pin shaft fixing plates; the first guide pulley is arranged on the first pin shaft and clings to the inner wall of the top of the limiting cavity.
Further, the first limiting block is arranged on the inner wall of the top of the end, close to the telescopic tube, of the limiting containing cavity, and a first fastening screw used for locking and fixing the first limiting block is further arranged on the outer wall of the top of the fixed sleeve.
Further, two sides of the lower part of one end of the fixed sleeve close to the telescopic sleeve are respectively provided with a second pin shaft fixed plate, a second pin shaft is further connected between the two second pin shaft fixed plates, and one end of the second pin shaft is further provided with a fastening nut used for locking and fixing the second pin shaft; and a second guide pulley is also arranged on the second pin shaft and is clung to the outer wall of the bottom of the telescopic tube.
Further, a second limiting block is further arranged on the outer wall of the bottom of one end, close to the limiting cavity, of the telescopic sleeve.
Further, a plurality of first reinforcing rib plates connected with the fixed sleeve are further arranged on one side of the backboard, and a plurality of connecting lock holes used for being connected with an external building are further formed on the other side of the backboard.
Further, two sides of one end of the fixed sleeve close to the backboard are respectively provided with a wrench position avoiding opening.
Further, one side of the first mounting plate is also provided with a plurality of second reinforcing rib plates connected with the telescopic tubes, and the side of the first mounting plate is also provided with reinforcing channel steel; the other side of the first mounting plate is provided with a plurality of fixing lock holes which are communicated with the reinforcing channel steel, and the fixing lock holes are used for being connected with external wall-attached supports.
By adopting the scheme, the utility model has the beneficial effects that:
the device sets up between attaching wall support and building peripheral wall, when there is the change layer region of shrink change through the building peripheral wall, can carry out flexible regulation, thereby can adjust the distance of high-rise building lift protection platform support body structure and building peripheral wall, make a plurality of attaching wall support departments in same vertical plane, thereby guarantee the normal development of engineering, and after the support body climbs through building peripheral wall, there is the change layer region of shrink change, can only carry out flexible regulation to the device, make the distance of support body structure from the wall get back to normal position, thereby need not like conventional operation, dismantle the change of withdrawing with whole rim up, so can make the support body use safer, can save man-hour more greatly improve work efficiency.
Drawings
FIG. 1 is a schematic structural view of a shear wall of a high-rise building core tube;
FIG. 2 is a perspective view of the present utility model;
FIG. 3 is an exploded view of FIG. 2;
FIG. 4 is a perspective view of the base unit of the present utility model;
FIG. 5 is a perspective view of the other view of FIG. 4;
FIG. 6 is a side view of FIG. 4;
FIG. 7 is a perspective view of the telescopic ram mechanism of the present utility model;
FIG. 8 is a perspective view of the other view of FIG. 7;
FIG. 9 is a cross-sectional view (contracted state) of the present utility model;
FIG. 10 is a cross-sectional view (extended state) of the present utility model;
FIG. 11 is a partial enlarged view of an embodiment of the present utility model;
FIG. 12 is a practical view showing the extended state when the wall surface changing layer is used in one embodiment of the present utility model;
FIG. 13 is a diagram showing the actual application of the wall surface change layer in a normal state after the wall surface change layer is used in one embodiment of the present utility model;
wherein, the attached drawings mark and illustrate:
1-a base mechanism; 2-a telescopic ejector rod mechanism;
3-a first guide pulley; 4-wall-attached support;
11-a back plate; 12-fixing the sleeve;
13-a first limiting block; 14-a limiting cavity;
15-installing a clearance hole; 16-an adjusting screw rod assembly;
17-a screw rod fixing plate; 21-a first mounting plate;
22-a telescopic tube; 23-a nut fixing plate;
24-nut mounting holes; 25-a first pin fixing plate;
26-a first pin; 27-a second limiting block;
111-a first reinforcing rib plate; 112-connecting the lock holes;
121—a first fastening screw; 122-a second pin fixing plate;
123-a second pin; 124-a fastening nut;
125-a second guide pulley; 126-wrench clearance port;
211-second reinforcing rib plates; 212-reinforcing channel steel;
213-a fixed keyhole.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the specific embodiments.
Referring to fig. 2 to 13, the present utility model provides an adjustable telescopic lifting device, comprising a base mechanism 1 and a telescopic ejector rod mechanism 2; the base mechanism 1 comprises a back plate 11, a fixed sleeve 12 connected with one side of the back plate 11 and a translation driving mechanism arranged on the back plate 11; one end of the telescopic ejector rod mechanism 2 is movably inserted into the fixed sleeve 12 and is connected with the translation driving mechanism; one end of the telescopic ejector rod mechanism 2, which is inserted into the fixed sleeve 12, is also provided with a first guide pulley 3 which is clung to the inner wall of the fixed sleeve 12, and the inner wall of the fixed sleeve 12 is also provided with a first limiting block 13; the translation driving mechanism is used for driving the telescopic ejector rod mechanism 2 to do translation telescopic motion in the fixed sleeve 12, and the first limiting block 13 is used for limiting the stroke of the telescopic ejector rod mechanism 2 to do translation telescopic motion.
One end of the fixed sleeve 12 is connected with the backboard 11, and the other end of the fixed sleeve 12 is also provided with a limiting cavity 14; the translation driving mechanism comprises a mounting avoidance hole 15 which is arranged on the back plate 11 and penetrates through the limiting cavity 14, an adjusting screw rod assembly 16 which is arranged on the mounting avoidance hole 15 and one end of which is inserted into the limiting cavity 14, and a screw rod fixing plate 17 which is arranged in the limiting cavity 14 and used for limiting and fixing the adjusting screw rod assembly 16; one end of the telescopic ejector rod mechanism 2 is movably inserted into the limiting cavity 14 and is connected with the adjusting screw rod assembly 16; the telescopic ejector rod mechanism 2 comprises a first mounting plate 21, a telescopic sleeve 22 connected with one side of the first mounting plate 21, and a nut fixing plate 23 arranged at one end of the telescopic sleeve 22; one end of the telescopic sleeve 22 provided with a nut fixing plate 23 is movably inserted into the limiting cavity 14, and the nut fixing plate 23 is also provided with a nut mounting hole 24; the adjusting screw rod assembly 16 is connected with a nut fixing plate 23 through a nut mounting hole 24; the telescopic sleeve 22 is provided with a nut fixing plate 23, two sides of the upper part of one end are respectively provided with a first pin fixing plate 25, and a first pin 26 is also connected between the two first pin fixing plates 25; the first guide pulley 3 is mounted on the first pin shaft 26, and the first guide pulley 3 is clung to the top inner wall of the limiting cavity 14.
The first limiting block 13 is arranged on the top inner wall of one end of the limiting containing cavity 14, which is close to the telescopic sleeve 22, and a first fastening screw 121 for locking and fixing the first limiting block 13 is further arranged on the top outer wall of the fixed sleeve 12; two sides of the lower part of one end of the fixed sleeve 12, which is close to the telescopic sleeve 22, are respectively provided with a second pin shaft fixed plate 122, a second pin shaft 123 is further connected between the two second pin shaft fixed plates 122, and one end of the second pin shaft 123 is further provided with a fastening nut 124 for locking and fixing the second pin shaft; a second guide pulley 125 is also mounted on the second pin shaft 123, and the second guide pulley 125 is tightly attached to the bottom outer wall of the telescopic tube 22; a second limiting block 27 is further arranged on the outer wall of the bottom of one end, close to the limiting cavity 14, of the telescopic tube 22 (the second limiting block 27 is welded with the telescopic tube 22); one side of the back plate 11 is also provided with a plurality of first reinforcing rib plates 111 connected with the fixed sleeve 12, and the other side of the back plate 11 is also provided with a plurality of connecting lock holes 112 for connecting with an external building; the two sides of one end of the fixed sleeve 12, which is close to the back plate 11, are respectively provided with a wrench position avoiding opening 126; a plurality of second reinforcing rib plates 211 connected with the telescopic sleeves 22 are further arranged on one side of the first mounting plate 21, and reinforcing channel steel 212 is further arranged on the side of the first mounting plate 21; the other side of the first mounting plate 21 is provided with a plurality of fixing lock holes 213 penetrating through the reinforcing channel steel 212, and the fixing lock holes 213 are used for being connected with an external wall-attached support 4.
The working principle of the utility model is as follows:
with continued reference to fig. 2 to 13, in this embodiment, the elevating device includes a base unit 1 and a telescopic ejector rod unit 2, where a back plate 11 of the base unit 1 is provided with a plurality of connection lock holes 112 (in this embodiment, an upper portion and a lower portion on one side of the back plate 11 are respectively provided with a strip-shaped connection lock hole 112) for locking and fixing the base unit 1 on an external building; the telescopic sleeve 22 of the telescopic ejector rod mechanism 2 is coaxially and movably inserted into the limiting containing cavity 14 of the fixed sleeve 12 and is connected with the translational driving mechanism, under the driving of the translational driving mechanism, the telescopic sleeve 22 can be driven to do translational telescopic motion in the limiting containing cavity 14, and the first mounting plate 21 of the telescopic ejector rod mechanism 2 is also provided with a plurality of fixing lock holes 213 (in the embodiment, the fixing lock holes 213 are two and penetrate through the reinforcing channel steel 212) for connecting the telescopic ejector rod mechanism 2 with the external wall-attached support 4, so that when a building change layer with inward shrinkage change is encountered, the distance between a frame body and a peripheral wall surface of a building (the wall-attached support 4 is mounted on the frame body) can be adjusted through the telescopic sleeve 22, thereby ensuring that a plurality of wall-attached supports 4 are positioned on the same vertical plane, and further ensuring normal development of engineering and improving working efficiency.
In this embodiment, the adjusting screw assembly 16 includes a screw body installed in the limiting cavity 14 through the installation avoidance hole 15, and an adjusting nut installed on the screw body, where the adjusting nut is connected with the nut fixing plate 23 through the nut installation hole 24, and further can drive the telescopic tube 22 to do translational telescopic movement in the limiting cavity 14 by rotating the screw body, and in order to ensure the installation tightness of the screw body, a screw fixing plate 17 is further provided in the limiting cavity 14, so as to limit and fix the screw fixing plate; in addition, in this embodiment, a first limiting block 13 is further disposed on the top inner wall of the limiting cavity 14 to limit the translational and telescopic travel of the telescopic tube 22, when the telescopic tube 22 is inserted into the limiting cavity 14, the first guiding pulley 3 will be tightly attached to the top inner wall of the limiting cavity 14, and the first limiting block 13 is disposed near the opening of the limiting cavity 14, so that the first guiding pulley 3 can be blocked from sliding out of the limiting cavity 14, and further, the translational and telescopic travel of the telescopic tube 22 can be limited, meanwhile, by setting the first guiding pulley 3, the smoothness of the translational and telescopic travel of the telescopic tube 22 can be ensured, and in order to further limit the translational and telescopic travel of the telescopic tube 22 and improve the smoothness of the translational and telescopic travel of the telescopic tube, a second guiding pulley 125 is further disposed at the bottom of the fixed tube 12, and a second limiting block 27 is further disposed at the bottom of the telescopic tube 22, and the working principle is similar to that described above, and is not repeated here; in addition, in order to ensure the installation stability of the first pin shaft 26 and the second pin shaft 123, a fastening nut 124 is further installed at one end of the first pin shaft 26 and one end of the second pin shaft 123 so as to limit and fix the fastening nut; meanwhile, in order to improve the tightness and stability of the whole device, the back plate 11 and the first mounting plate 21 are respectively provided with a first reinforcing rib plate 111 and a second reinforcing rib plate 211, and in addition, two sides of one end of the fixed sleeve 12, which is close to the back plate 11, are respectively provided with a spanner position avoiding opening 126, so that the maintenance and adjustment of the adjusting screw assembly 16 can be facilitated.
When the device specifically works, the base mechanism 1, the telescopic ejector rod mechanism 2 and the adjusting screw rod assembly 16 can be assembled with each other, then one end of the base mechanism 1 of the device is fixedly connected with a building wall surface through a bolt, and the telescopic ejector rod mechanism is fixedly connected with the wall attaching support 4 through the bolt; when the high-rise building lifting protection platform is in a normal position for protection, the device can be in a state with the shortest distance by adjusting the screw rod assembly 16; when the frame body climbs to a change layer with inward shrinkage change on the peripheral wall surface, the device used on the change layer drives and adjusts the expansion ejector rod mechanism 2 to stretch, the stretching adjusting stroke is the inward shrinkage size of the wall surface at the moment, and then the plurality of wall-attached supports 4 can be ensured to be positioned on the same vertical plane, and when the frame body climbs to pass through the inward shrinkage change layer of the peripheral wall surface, the expansion ejector rod mechanism 2 is adjusted to retract, so that the distance from the frame body structure to the wall surface returns to the normal position, and the whole heightening piece is not required to be replaced like the conventional operation, thus the use of the frame body is safer, the working hours can be saved, and the working efficiency is greatly improved.
The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. An adjustable telescopic heightening piece device is characterized by comprising a base mechanism and a telescopic ejector rod mechanism; the base mechanism comprises a back plate, a fixed sleeve connected with one side of the back plate and a translation driving mechanism arranged on the back plate; one end of the telescopic ejector rod mechanism is movably inserted into the fixed sleeve and is connected with the translation driving mechanism; one end of the telescopic ejector rod mechanism, which is inserted into the fixed sleeve, is also provided with a first guide pulley which is clung to the inner wall of the fixed sleeve, and the inner wall of the fixed sleeve is also provided with a first limiting block; the translation driving mechanism is used for driving the telescopic ejector rod mechanism to do translation telescopic motion in the fixed sleeve, and the first limiting block is used for limiting the stroke of the telescopic ejector rod mechanism doing translation telescopic motion.
2. The adjustable telescopic lifting device according to claim 1, wherein one end of the fixed sleeve is connected with the back plate, and the other end of the fixed sleeve is also provided with a limiting cavity; the translation driving mechanism comprises a mounting clearance hole which is formed in the back plate and penetrates through the limiting cavity, an adjusting screw rod assembly which is mounted in the mounting clearance hole and one end of which is inserted into the limiting cavity, and a screw rod fixing plate which is arranged in the limiting cavity and used for limiting and fixing the adjusting screw rod assembly; one end of the telescopic ejector rod mechanism is movably inserted into the limiting cavity and connected with the adjusting screw rod assembly.
3. The adjustable telescopic lifting device according to claim 2, wherein the telescopic ejector rod mechanism comprises a first mounting plate, a telescopic sleeve connected with one side of the first mounting plate, and a nut fixing plate arranged at one end of the telescopic sleeve; one end of the telescopic sleeve, provided with a nut fixing plate, is movably inserted into the limiting containing cavity, and the nut fixing plate is also provided with a nut mounting hole; the adjusting screw rod assembly is connected with the nut fixing plate through the nut mounting hole.
4. The adjustable telescopic lifting device according to claim 3, wherein a first pin shaft fixing plate is respectively installed on two sides of the upper part of one end of the telescopic sleeve provided with the nut fixing plate, and a first pin shaft is further connected between the two first pin shaft fixing plates; the first guide pulley is arranged on the first pin shaft and clings to the inner wall of the top of the limiting cavity.
5. The adjustable telescoping rim assembly of claim 4, wherein the first stop block is disposed on a top inner wall of the end of the stop pocket adjacent the telescoping tube, and a first fastening screw for locking the first stop block is further mounted on a top outer wall of the fixed tube.
6. The adjustable telescopic lifting device according to claim 4, wherein a second pin fixing plate is respectively arranged at two sides of the lower part of one end of the fixed sleeve close to the telescopic sleeve, a second pin is also connected between the two second pin fixing plates, and a fastening nut for locking and fixing the second pin is also arranged at one end of the second pin; and a second guide pulley is also arranged on the second pin shaft and is clung to the outer wall of the bottom of the telescopic tube.
7. The adjustable telescoping rim assembly of claim 6, wherein a second stop block is further disposed on an outer wall of the telescoping tube near the bottom of the end of the stop pocket.
8. The adjustable telescopic lifting device according to claim 1, wherein one side of the back plate is further provided with a plurality of first reinforcing rib plates connected with the fixed sleeve, and the other side of the back plate is further provided with a plurality of connecting lock holes for connecting with an external building.
9. The adjustable telescopic lifting device according to claim 1, wherein two sides of one end of the fixed sleeve close to the back plate are respectively provided with a wrench clearance opening.
10. The adjustable telescoping lifting device of claim 3, wherein one side of the first mounting plate is further provided with a plurality of second reinforcing ribs connected with telescoping tubes, and the side of the first mounting plate is further provided with reinforcing channel steel; the other side of the first mounting plate is provided with a plurality of fixing lock holes which are communicated with the reinforcing channel steel, and the fixing lock holes are used for being connected with external wall-attached supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003690.0U CN220521938U (en) | 2023-01-03 | 2023-01-03 | Adjustable telescopic heightening piece device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003690.0U CN220521938U (en) | 2023-01-03 | 2023-01-03 | Adjustable telescopic heightening piece device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220521938U true CN220521938U (en) | 2024-02-23 |
Family
ID=89928130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320003690.0U Active CN220521938U (en) | 2023-01-03 | 2023-01-03 | Adjustable telescopic heightening piece device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220521938U (en) |
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2023
- 2023-01-03 CN CN202320003690.0U patent/CN220521938U/en active Active
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