CN219854311U - Sealing ring mounting structure - Google Patents
Sealing ring mounting structure Download PDFInfo
- Publication number
- CN219854311U CN219854311U CN202320186770.4U CN202320186770U CN219854311U CN 219854311 U CN219854311 U CN 219854311U CN 202320186770 U CN202320186770 U CN 202320186770U CN 219854311 U CN219854311 U CN 219854311U
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- sealing ring
- fixedly connected
- cylinder
- limiting
- driving
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- 238000007789 sealing Methods 0.000 title claims abstract description 114
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Sealing Devices (AREA)
Abstract
The utility model relates to the technical field of sealing ring installation, and discloses a sealing ring installation structure, which has the technical scheme that the sealing ring installation structure comprises a bracket, a driving part, a pressing part and a back hook part; the pressing part is fixedly arranged on the self-support, the back hook part is connected to the lower side of the pressing part, the sealing ring is positioned on the lower side of the pressing part and is hooked by the back hook part, the driving part is fixedly arranged on the self-support and used for driving the pressing part and the back hook part, and the pressing part comprises a fixing frame, a connecting rod, a fixing block and a lower pressing head; the fixing frame is fixedly arranged on the support, the fixing block is fixedly connected to the lower end of the fixing frame, the driving part is used for driving the back hook part to hook the sealing ring by adopting a sealing ring clamping method, the installation state of the sealing ring cannot be influenced at the moment, then the pressing part is used for pressing the sealing ring downwards, the possibility of overturning the sealing ring is avoided, and accordingly the larger abrasion of the machine is indirectly reduced.
Description
Technical Field
The utility model relates to the technical field of sealing ring installation, in particular to a sealing ring installation structure.
Background
The sealing ring is an annular cover, is fixed on one ferrule or gasket on a bearing or other positions, is contacted with the other ferrule or gasket or forms a narrow labyrinth gap, and can prevent lubricating oil from leaking and foreign objects from entering, and comprises an O-shaped sealing ring series, a Y-shaped sealing ring, an X-shaped sealing ring and the like.
The seal ring installation is an engineering for installing and connecting the seal ring with other objects; most of the prior sealing ring installing structures are sleeved with sealing rings and sleeved in products, and the sealing rings are easy to turn over in the process, so that the basic requirement of the sealing rings is not up to standard, and the problem that the machine is worn out greatly due to the fact that the sealing rings are not installed in place can also occur in the use of the machine.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide a sealing ring mounting structure, which adopts a method for clamping a sealing ring, firstly utilizes a driving part to drive a back hook part to hook the sealing ring, at the moment, the mounting state of the sealing ring cannot be influenced, and then utilizes a compressing part to press down the sealing ring, thereby avoiding the possibility of overturning the sealing ring and indirectly reducing the larger abrasion of a machine.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a sealing ring mounting structure comprises a bracket, a driving part, a pressing part and a back hook part; the pressing part is fixedly arranged on the self-supporting frame, the back hook part is connected to the lower side of the pressing part, the sealing ring is positioned on the lower side of the pressing part and is hooked by the back hook part, the driving part is fixedly arranged on the self-supporting frame and used for driving the pressing part and the back hook part, the driving part is used for driving the back hook part to hook the sealing ring by adopting a sealing ring clamping method, the installation state of the sealing ring is not influenced at this time, the pressing part is used for pressing the sealing ring, the possibility of overturning the sealing ring is avoided, and accordingly the larger abrasion of the machine is indirectly reduced.
As a further improvement of the utility model, the compressing part comprises a fixing frame, a connecting rod, a fixing block and a lower pressure head; the fixed frame fixed mounting is on the support, fixed block fixed connection is in the fixed frame lower extreme, with lower pressure head sliding fit, the sealing washer be located the fixed block lower extreme and with lower pressure head butt, connecting rod fixed connection is keeping away from the one side of sealing washer under the pressure head, through utilizing the connecting rod drive pressure head to remove down for the sealing washer can the atress even, thereby more convenient installation.
As a further improvement of the utility model, the back hook part comprises a sliding groove, a limit hook, a through groove and a limit piece; the limiting hook is arranged in the sliding groove in a sliding mode, the through groove is arranged in the fixed block, the lower pressure head is in sliding fit with the through groove, the limiting piece is fixedly arranged on one face, away from the fixed frame, of the fixed block, the deformation state of the sealing ring is limited when the sealing ring is installed, one side of the sealing ring is hooked through the sealing ring, and then the sealing ring is abutted to the limiting piece after being pulled back, so that the form of the sealing ring is changed, and the installation is convenient.
As a further improvement of the utility model, the lower pressure head comprises a lower pressure plate and at least three arc-shaped sheets; the lower pressure disk is fixedly connected with the connecting rod, three arc-shaped sheets are annularly distributed and fixedly connected on one face of the lower pressure disk, which is close to the fixed block, and the arc-shaped sheets are in sliding fit with the through groove, and the three arc-shaped sheets are mounted on the lower pressure head to be matched with the lower pressing sealing ring, so that the back hook part can move in the interval between the two arc-shaped sheets when the back hook part is used for back hooking the sealing ring, the shape of the sealing ring is changed by conveniently matching the back hook part, and the back pressing from three positions is more uniform.
As a further improvement of the utility model, the fixed block is obliquely arranged on the fixed frame, and the installation in an oblique mode is more anthropomorphic, thereby being a simple and convenient method during installation,
as a further improvement of the utility model, the rotary cylinder is used for rotating the rotary disk, the pressing cylinder is used for driving the connecting rod to stretch out and draw back, the stretching cylinder is used for driving the limiting hook to move, the lifting cylinder is used for driving the connecting structure, and the driving part comprises the lifting cylinder, the stretching cylinder, the rotary cylinder, the connecting structure, the rotary disk and the pressing cylinder; the rotary cylinder is fixedly arranged on the support, the rotary disk is rotationally connected with the rotary cylinder, the rotary disk is fixedly connected with the fixing frame, the pressing cylinder is fixedly connected with the fixing frame on one side far away from the rotary disk and fixedly connected with the connecting rod, the stretching cylinder is fixedly connected with the fixing frame and fixedly connected with the limiting hook, the lifting cylinder is connected with one end of the connecting structure, the other end of the connecting structure is connected with one side far away from the rotary cylinder, the lifting cylinder is used for stabilizing the lifting cylinder to stretch out, the rotating angle of the rotary disk is changed through the rotary cylinder, and therefore the fixing frame is driven to rotate, any obstacle inside a machine is avoided, and the lifting cylinder is more stably installed.
As a further improvement of the present utility model, the connecting structure includes a pair of limiting plates and a pair of limiting plates; the pair of limiting plates are L-shaped and symmetrically and fixedly connected to the bracket, a convex-shaped interval is formed between the pair of limiting plates, the pair of limiting plates are fixedly connected to the extending rod of the lifting cylinder according to the axial direction of the lifting cylinder, and the pair of limiting plates and the extending rod form an I shape; the I-shaped and the convex-shaped intervals are matched and mutually limited.
As a further improvement of the utility model, the limiting piece comprises a deformation groove and a limiting piece body; the locating part body fixed connection keeps away from the one side of mount at the fixed block, and deformation groove is seted up on the locating part body, can fully butt deformation groove lateral wall when making the unilateral atress of sealing washer through deformation groove to the sealing washer can change along with deformation groove's change.
As a further improvement of the utility model, when the sealing ring is hooked by the limiting hooks, the sealing ring is propped against the side wall of the deformation groove, the deformation groove is matched with the deformation groove to deform, the diameter of the deformation groove is smaller than the diameter to be installed, the deformation groove is a Y-shaped groove, the sealing ring can be changed into an oval shape or a water drop shape and other shapes convenient to install, the oval shape is favorable for reducing the original circular outer diameter of the sealing ring, then the sealing ring is easier to place at an installation position, and the installation in an inclined mode is more anthropomorphic, so that the sealing ring is a simple and convenient method in installation, firstly, the lower end enters, then is pressed down for installation, and finally is compacted completely after the rest sealing ring is loosened, thereby being more convenient to install and better in effect.
The utility model has the beneficial effects that:
(1) According to the utility model, the method of clamping the sealing ring is adopted, the driving part is used for driving the back hook part to hook the sealing ring, the installation state of the sealing ring is not influenced at the moment, and then the pressing part is used for pressing down the sealing ring, so that the possibility of overturning the sealing ring is avoided, and the larger abrasion of the machine is indirectly reduced.
(2) According to the utility model, the single side of the sealing ring can be fully abutted against the side wall of the deformation groove when the deformation groove is stressed, so that the sealing ring can be changed along with the change of the deformation groove, the original circular outer diameter of the sealing ring is reduced by changing the sealing ring into an oval shape, then the sealing ring is easier to place at an installation position, and the sealing ring is more humanized by using an inclined mode.
(3) According to the utility model, the sealing ring is hooked on one side and then is abutted against the limiting piece after being pulled back, so that the form of the sealing ring is changed, the rotary cylinder is convenient to install, the rotation angle of the rotary disc is changed, the fixing frame is driven to rotate, any obstacle in the machine is avoided, and the installation is more stable.
(4) According to the utility model, the three arc-shaped sheets are arranged on the lower pressure head to be matched with the pressing sealing ring, so that the back hook part can move from the interval between the two arc-shaped sheets when the back hook is used for sealing the ring, the shape of the sealing ring is conveniently changed by being matched with the back hook part, and the pressing force from three positions is more uniform.
Drawings
FIG. 1 is a schematic diagram of the front view of the present utility model;
FIG. 2 is a schematic rear view of the present utility model;
FIG. 3 is a schematic view of the structure of the present utility model at the press-back hook of FIG. 2;
FIG. 4 is an enlarged schematic view of the structure of the present utility model at the lower ram of FIG. 3;
FIG. 5 is an enlarged schematic view of the stop member of FIG. 4 in accordance with the present utility model;
fig. 6 is an enlarged schematic view of the structure of the fixing block of fig. 3 according to the present utility model.
Reference numerals: 1. a bracket; 2. a driving section; 21. a lifting cylinder; 22. a stretching cylinder; 23. a rotary cylinder; 231. a rotating disc; 24. a pressing cylinder is pressed down; 3. compressing the back hook part; 31. a fixing frame; 32. a connecting rod; 33. a fixed block; 331. a sliding groove; 332. a through groove; 34. a lower pressure head; 341. an arc-shaped sheet; 5. a limiting piece; 51. a deformation groove; 6. a hook return part; 61. a limit hook; 7. a connection structure; 71. a limiting plate; 72. and a limiting disc.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 6, a seal ring mounting structure of the present embodiment includes a bracket 1, a driving portion 2, a pressing portion, and a return hook portion 6; the compression part is fixedly arranged on the support 1, the back hook part 6 is connected to the lower side of the compression part, the sealing ring is positioned on the lower side of the compression part and is hooked by the back hook part 6, the driving part 2 is fixedly arranged on the support 1 and is used for driving the compression part and the back hook part 6, the driving part 2 is used for driving the back hook part 6 to hook the sealing ring by adopting a sealing ring clamping method, the installation state of the sealing ring is not influenced at this time, the compression part is used for pressing the sealing ring, the possibility of overturning the sealing ring is avoided, and therefore the larger abrasion of the machine is indirectly reduced.
As shown in fig. 1 to 6, the compressing part includes a fixing frame 31, a connecting rod 32, a fixing block 33 and a lower pressing head 34; the fixed frame 31 is fixedly arranged on the support 1, the fixed block 33 is fixedly connected to the lower end of the fixed frame 31 and is in sliding fit with the lower pressure head 34, the sealing ring is positioned at the lower end of the fixed block 33 and is abutted against the lower pressure head 34, the connecting rod 32 is fixedly connected to one surface of the lower pressure head 34, which is far away from the sealing ring, and the lower pressure head 34 is driven to move by the connecting rod 32, so that the sealing ring can be stressed uniformly, and the installation is more convenient.
As shown in fig. 1-6, the back hook 6 includes a sliding groove 331, a limit hook 61, a through groove 332 and a limit piece 5; the sliding groove 331 is formed in the fixed block 33, the limiting hook 61 is slidably mounted in the sliding groove 331, the through groove 332 is formed in the fixed block 33, the lower pressure head 34 is slidably matched with the through groove 332, the limiting piece 5 is fixedly mounted on one surface of the fixed block 33, which is far away from the fixed frame 31, for limiting the deformation state of the sealing ring when the sealing ring is mounted, the sealing ring is hooked on one side, and then is abutted with the limiting piece 5 after being pulled back, so that the shape of the sealing ring is changed, and the installation is convenient.
As shown in fig. 1-6, the lower ram 34 includes a lower platen and at least three arcuate sheets 341; the lower pressure plate is fixedly connected with the connecting rod 32, three arc-shaped sheets 341 are annularly distributed and fixedly connected to one surface of the lower pressure plate, which is close to the fixed block 33, the arc-shaped sheets 341 are in sliding fit with the through groove 332, and the three arc-shaped sheets 341 are mounted on the lower pressure head 34 to be matched with the lower pressing sealing ring, so that the back hook part 6 can move in the interval between the two arc-shaped sheets 341 when the back hook is used for sealing the back hook, the shape of the sealing ring is changed by being matched with the back hook part 6 conveniently, and the back hook part is pressed down more uniformly from three positions.
As shown in fig. 1 to 6, the fixing block 33 is installed on the fixing frame 31 in an inclined manner, and the installation is more personified by using an inclined manner, which is a simple method for installation,
as shown in fig. 1-6, the rotating cylinder 23 is used for rotating the rotating disc 231, the pressing cylinder 24 is used for driving the connecting rod 32 to stretch and retract, the stretching cylinder 22 is used for driving the limit hook 61 to move, the lifting cylinder 21 is used for driving the connecting structure 7, and the driving part 2 comprises the lifting cylinder 21, the stretching cylinder 22, the rotating cylinder 23, the connecting structure 7, the rotating disc 231 and the pressing cylinder 24; the rotary cylinder 23 is fixedly installed on the support 1, the rotary disk 231 is rotationally connected with the rotary cylinder 23, the rotary disk 231 is fixedly connected with the fixed frame 31, the lower pressure cylinder 24 is fixedly connected with one side, far away from the rotary disk 231, of the fixed frame 31 and is fixedly connected with the connecting rod 32, the stretching cylinder 22 is fixedly connected with the fixed frame 31 and is fixedly connected with the limit hooks 61, the lifting cylinder 21 is connected with one end of the connecting structure 7, the other end of the connecting structure 7 is connected with one side, far away from the rotary cylinder 23, of the support 1, the lifting cylinder 21 is used for stabilizing the extension, the rotating angle of the rotary disk 231 is changed through the rotary cylinder 23, and therefore the fixed frame 31 is driven to rotate, any obstacle inside a machine is avoided, and the installation is more stable.
As shown in fig. 1 to 6, the connecting structure 7 includes a pair of limiting plates 71 and a pair of limiting plates 72; the pair of limiting plates 71 are L-shaped and symmetrically and fixedly connected to the bracket 1, a convex-shaped interval is formed between the pair of limiting plates 71, the pair of limiting plates 72 are fixedly connected to the extending rod of the lifting cylinder 21 according to the axial direction of the lifting cylinder 21, and the pair of limiting plates 72 and the extending rod form an I shape; the I-shaped and the convex-shaped intervals are matched and mutually limited.
As shown in fig. 1-6, the limiting piece 5 comprises a deformation groove 51 and a limiting piece 5 body; the locating part 5 body fixed connection is at the one side that fixed block 33 kept away from mount 31, and deformation groove 51 is offered on the locating part 5 body, can fully butt deformation groove 51 lateral wall when making the unilateral atress of sealing washer through deformation groove 51 to the sealing washer can change along with deformation groove 51's change.
As shown in fig. 1-6, when the sealing ring is hooked by the limiting hook 61, the sealing ring is abutted against the side wall of the deformation groove 51, the deformation groove 51 is matched to deform with the diameter smaller than the diameter to be installed, the deformation groove 51 is a Y-shaped groove, the sealing ring can be changed into an oval or drop-shaped shape which is convenient to install, the original circular outer diameter of the sealing ring is reduced by the oval shape, then the sealing ring is easier to place at the installation position, and the installation is more anthropomorphic by using an inclined mode.
Working principle: as shown in fig. 1 to 6, when the sealing ring is installed, the lifting cylinder 21 starts the longitudinal position of the driving bracket 1, simultaneously starts the rotating cylinder 23, drives the fixing bracket 31 to integrally rotate, avoids other elements, then reaches a preset position, then the limiting hook 61 starts to hook the sealing ring, then starts the stretching cylinder 22, the sealing ring moves after being hooked, and is matched with the inclination angle of the fixed block 33 due to gravity and unilateral stress, the sealing ring is in an inclined state and is abutted with the deformation groove 51, so that the sealing ring becomes elliptical, then the lifting cylinder 21 starts the longitudinal position of the driving bracket 1, simultaneously starts the rotating cylinder 23, drives the fixing bracket 31 to integrally rotate, avoids other elements, thereby reaching the installation position, the lifting cylinder 21 starts the longitudinal position of the driving bracket 1, then one end of the elliptical sealing ring enters the installation position first, starts the pressing cylinder 24, so that the connecting rod 32 drives the lower pressing head 34 to press down, and simultaneously the arc piece presses down the sealing ring, then starts the stretching cylinder 22 to release the limiting hook 61, no longer hook, and then continues to press down the sealing ring, thereby completing the installation 341.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. The utility model provides a sealing washer mounting structure which characterized in that: comprises a bracket (1), a driving part (2), a pressing part (3) and a back hook part (6);
the compression part (3) is fixedly arranged on the support (1), the back hook part (6) is connected to the lower side of the compression part (3), when the sealing ring is required to be installed, the sealing ring is positioned on the lower side of the compression part (3) and is hooked by the back hook part (6), and the driving part (2) is fixedly arranged on the support (1) and used for driving the compression part (3) and the back hook part (6).
2. A seal ring mounting structure according to claim 1, wherein: the compressing part (3) comprises a fixing frame (31), a connecting rod (32), a fixing block (33) and a lower pressing head (34);
the fixing frame (31) is fixedly arranged on the support (1), the fixing block (33) is fixedly connected to the lower end of the fixing frame (31) and is in sliding fit with the lower pressure head (34), when the sealing ring is required to be arranged, the sealing ring is positioned at the lower end of the fixing block (33) and is abutted to the lower pressure head (34), and the connecting rod (32) is fixedly connected to one surface, far away from the sealing ring, of the lower pressure head (34).
3. A seal ring mounting structure according to claim 2, wherein: the back hook part (6) comprises a sliding groove (331), a limit hook (61), a through groove (332) and a limit piece (5); the sliding groove (331) is formed in the fixed block (33), the limiting hook (61) is slidably mounted in the sliding groove (331), the through groove (332) is formed in the fixed block (33), the lower pressing head (34) is slidably matched with the through groove (332), the limiting piece (5) is fixedly mounted on one surface, far away from the fixed frame (31), of the fixed block (33) and used for hooking the sealing ring on one side, and when the sealing ring is pulled back, the limiting piece is abutted with the limiting piece, so that the form of the sealing ring is changed.
4. A seal ring mounting structure according to claim 3, wherein: the lower pressing head (34) comprises a lower pressing disc and at least three arc-shaped sheets (341);
the lower pressure plate is fixedly connected with the connecting rod (32), three arc-shaped sheets (341) are annularly distributed and fixedly connected to one surface of the lower pressure plate, which is close to the fixed block (33), and the arc-shaped sheets (341) are in sliding fit with the through grooves (332).
5. A seal ring mounting structure according to claim 2, wherein: the fixed block (33) is obliquely arranged on the fixed frame (31).
6. A seal ring mounting structure according to claim 3, wherein: the driving part (2) comprises a lifting cylinder (21), a stretching cylinder (22), a rotating cylinder (23), a connecting structure (7), a rotating disc (231) and a pressing cylinder (24);
the rotary cylinder (23) is used for driving the rotary disk (231) to rotate, the pressing cylinder (24) is used for driving the connecting rod (32) to stretch out and draw back, the stretching cylinder (22) drives the limiting hook (61) to move, the lifting cylinder (21) is used for driving the connecting structure (7), and the connecting structure (7) is used for stabilizing the lifting cylinder (21) to stretch out.
7. The seal ring mounting structure according to claim 6, wherein: the connecting structure (7) comprises a pair of limiting plates (71) and a pair of limiting plates (72);
the pair of limiting plates (71) are L-shaped and symmetrically and fixedly connected to the bracket (1), a convex-shaped interval is formed between the pair of limiting plates (71), the pair of limiting plates (72) are fixedly connected to the extending rod of the lifting cylinder (21) according to the axial direction of the lifting cylinder (21), and the pair of limiting plates (72) and the extending rod form an I shape;
the I-shaped and the convex-shaped intervals are matched and mutually limited.
8. A seal ring mounting structure according to claim 3, wherein: the limiting piece (5) comprises a deformation groove (51) and a limiting piece body; the limiting part body is fixedly connected to one surface, far away from the fixing frame (31), of the fixing block (33), and the deformation groove (51) is formed in the limiting part body.
9. The seal ring mounting structure according to claim 6, wherein: the rotary cylinder (23) is fixedly arranged on the support (1), the rotary disk (231) is rotationally connected with the rotary cylinder (23), the rotary disk (231) is fixedly connected with the fixed frame (31), the pressing cylinder (24) is fixedly connected with one surface, far away from the rotary disk (231), of the fixed frame (31) and is fixedly connected with the connecting rod (32), and the stretching cylinder (22) is fixedly connected with the fixed frame (31) and is fixedly connected with the limiting hook (61).
10. The seal ring mounting structure according to claim 8, wherein: when the sealing ring is hooked by the limiting hook (61), the sealing ring is propped against the side wall of the deformation groove (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320186770.4U CN219854311U (en) | 2023-02-06 | 2023-02-06 | Sealing ring mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320186770.4U CN219854311U (en) | 2023-02-06 | 2023-02-06 | Sealing ring mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219854311U true CN219854311U (en) | 2023-10-20 |
Family
ID=88340931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320186770.4U Active CN219854311U (en) | 2023-02-06 | 2023-02-06 | Sealing ring mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219854311U (en) |
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2023
- 2023-02-06 CN CN202320186770.4U patent/CN219854311U/en active Active
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