CN116065577A - Slope elbow anchor rod construction centering and limiting device and construction method thereof - Google Patents
Slope elbow anchor rod construction centering and limiting device and construction method thereof Download PDFInfo
- Publication number
- CN116065577A CN116065577A CN202310026232.3A CN202310026232A CN116065577A CN 116065577 A CN116065577 A CN 116065577A CN 202310026232 A CN202310026232 A CN 202310026232A CN 116065577 A CN116065577 A CN 116065577A
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- centering
- anchor rod
- centralizer
- anchor
- boot
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a slope elbow anchor rod construction centering and limiting device, which comprises: the bottom of the centralizer is detachably connected with a centralizer boot; the upper bracket comprises a clamping circular ring and a plurality of telescopic supporting legs; the diameter of the clamping circular ring is adjustable, one end of any telescopic supporting leg is hinged with the clamping circular ring, and the other end of any telescopic supporting leg is hinged with the upper end face of the centering device; the lower bracket comprises a centering circular ring with the inner diameter matched with the diameter of the anchor rod and a plurality of fixed supporting legs; the lower support is arranged in the centralizer boot, one end of any fixed leg is fixedly connected with the outer wall of the centering circular ring, and the other end of the fixed leg is fixedly connected with the inner wall of the centralizer boot; the centralizer, the centralizer boot, the clamping ring and the centering ring are all coaxially arranged. The invention can ensure that the anchor rod is positioned in the center of the anchor hole during installation, and can flexibly adjust the height of the anchor rod to meet the requirement, thereby ensuring the anchoring force of the anchor rod after grouting.
Description
Technical Field
The invention relates to the field of side slope anchor rod centering devices. More particularly, the invention relates to a slope elbow anchor rod construction centering and limiting device and a construction method thereof.
Background
The construction process of the anchor rod in the engineering slope is to firstly drill anchor holes and then carry out subsequent processes such as anchor rod installation and the like. When the anchor holes are drilled, due to the soil property of the side slope, the experience of a drilling machine operator and the like, a certain gap exists between the depth, the diameter and the like of the anchor holes and the design scheme. When the anchor rod is installed, a part of the bottom of the hole can be inserted under the action of gravity, and in the prior art, the anchor rod is limited to move downwards only by clamping the orifice of the anchor rod elbow, so that the height of the anchor rod is inconsistent with the design height and cannot be clamped into the grid beam steel bar; and when the measure is not limited, the anchor rod is easy to cling to the hole wall under the action of gravity, so that the protective layer is thinner, and the anchoring force loss is larger. In the traditional method, the lug-shaped positioning steel bars welded on the anchor rods are adopted to ensure the centering of the anchor rods, but for slopes with poor stratum properties, the positioning steel bars are too thin and easily move downwards under the action of gravity and are blocked into a soil layer of a hole wall, so that centering and limiting effects cannot be formed. .
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide at least the advantages to be described later.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a slope elbow anchor rod construction centering and limiting device is provided, comprising:
the centering device is of a hollow truncated cone structure; the bottom of the centralizer is detachably connected with a centralizer boot, and the centralizer boot is of a hollow cylindrical structure;
the upper bracket comprises a clamping circular ring and a plurality of telescopic supporting legs; the diameter of the clamping circular ring is adjustable, one end of any telescopic supporting leg is hinged with the clamping circular ring, the other end is hinged with the upper end face of the centering device; the length of each telescopic supporting leg is adjusted so as to adjust the distance between the clamping circular ring and the centering device;
the lower bracket comprises a centering circular ring with the inner diameter matched with the diameter of the anchor rod and a plurality of fixed supporting legs; the lower support is arranged in the centering boot, a plurality of fixed support legs are uniformly distributed along the periphery of the centering circular ring, one end of any fixed support leg is fixedly connected with the outer wall of the centering circular ring, and the other end of the fixed support leg is fixedly connected with the inner wall of the centering boot;
the centralizer, the centralizer boot, the clamping ring and the centering ring are all coaxially arranged.
Preferably, the telescopic support leg comprises an outer sleeve and an inner rod, and one end of the inner rod extends into the outer sleeve and is in threaded connection with the outer sleeve; the inner rod is provided with a length mark.
Preferably, the bottom of the centralizer boot is provided with a blade foot.
Preferably, the clamping ring comprises a thin-wall steel belt, a hoop shell and a screw rod, wherein the hoop shell is fixedly connected with the fixed end of the thin-wall steel belt, and a plurality of meshing grooves matched with the screw rod are formed in the movable end of the thin-wall steel belt at intervals along the length direction of the movable end of the thin-wall steel belt; the two ends of the hoop shell are respectively provided with an extending opening and an extending opening through which the thin-wall steel belt can pass, and the screw is rotatably arranged in the hoop shell; and after the movable end of the thin-wall steel belt stretches into the hoop shell, the screw rod is rotated to enable the screw rod to be meshed with the movable end of the thin-wall steel belt.
Preferably, a rubber pad is arranged on the inner wall of the clamping circular ring.
Preferably, the centralizer comprises a plurality of centralizer blocks, and the centralizer is formed by splicing the plurality of centralizer blocks end to end in sequence.
Preferably, the device further comprises a steel sleeve, wherein the diameter of the steel sleeve is the same as the diameter of an anchor hole of the anchor rod and is coaxially arranged with the centering circular ring; the top of the steel sleeve is fixedly connected with each fixed supporting leg respectively.
The invention also aims to provide a construction method of the slope elbow anchor rod construction centering and limiting device, which comprises the following steps:
s1, after the anchor holes are drilled, placing a centralizer boot, enabling a steel sleeve to be inserted into the anchor holes, and enabling the center of the centering ring to be aligned with the center of the anchor holes; then inserting an anchor rod into the centering circular ring;
s2, splicing the centralizer, and connecting the centralizer with the centralizer boot;
s3, enabling the clamping circular ring to penetrate through the anchor rod and clamping the anchor rod; then each telescopic supporting leg is hinged with the upper end surfaces of the clamping circular ring and the centering device respectively;
and S4, adjusting the length of each telescopic supporting leg, and adjusting the anchor rod to the designed height.
Preferably, in step S1, the portion of the end of the anchor rod located outside the anchor hole extending out of the clamped ring is bent to 90 °.
Preferably, in step S4, the height of the anchor rod is adjusted according to the distance between the bending position of the anchor rod and the hole opening of the anchor hole.
The invention at least comprises the following beneficial effects:
1. according to the slope elbow anchor rod construction centering and limiting device, the anchor rod is centered and limited under the combined action of the upper support and the lower support, so that the anchor rod is ensured to be positioned at the center of an anchor hole; the length of each telescopic supporting leg in the upper support is adjusted, the distance between the clamping ring and the centering device is adjusted, and then the height of the anchor rod is adjusted.
2. According to the side slope elbow anchor rod construction centering and limiting device, the centering devices are formed by splicing the centering device blocks, so that the side slope elbow anchor rod centering and limiting device can be suitable for centering and limiting elbow anchor rods; and the bottom of the centralizer boot is provided with a cutting edge, so that the stability of the whole device can be improved.
3. The construction method of the side slope elbow anchor rod construction centering and limiting device can ensure that the anchor rod is positioned in the center of an anchor hole during installation, and can flexibly adjust the height of the anchor rod to meet the requirement of clamping the reinforcing steel bars of the grid beam, thereby ensuring the anchoring force of the anchor rod after grouting.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic side view of a centering and limiting device for slope elbow anchor construction according to an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the lower bracket according to the above embodiment of the present invention;
FIG. 3 is a schematic view of the clamping ring according to the above embodiment of the present invention;
FIG. 4 is a schematic view of the telescopic leg according to the above embodiment of the present invention;
fig. 5 is a schematic view of the structure of the blade foot according to the above embodiment of the present invention;
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present invention, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention.
As shown in fig. 1 to 5, the present invention provides a centering and limiting device for slope elbow anchor rod construction, comprising:
a centralizer 1 which is of a hollow truncated cone structure; the bottom of the centralizer 1 is detachably connected with a centralizer boot 2, and the centralizer boot 2 is of a hollow cylindrical structure;
an upper bracket 6 including a clamping ring 61 and a plurality of telescopic legs 62; the diameter of the clamping circular ring 61 is adjustable, one end of any telescopic supporting leg 62 is hinged with the clamping circular ring 61, and the other end is hinged with the upper end face of the centering device 1; adjusting the length of each telescopic leg 62 to adjust the distance between the clamping ring 61 and the centralizer 1;
a lower bracket 7 comprising a centering ring 71 having an inner diameter matching the diameter of the anchor rod 4 and a plurality of fixing legs 72; the lower bracket is arranged in the centering boot 2, a plurality of fixed support legs 72 are uniformly distributed along the periphery of the centering circular ring 71, one end of any fixed support leg 72 is fixedly connected with the outer wall of the centering circular ring 71, and the other end is fixedly connected with the inner wall of the centering boot 2;
the centralizer 1, the centralizer boot 2, the clamping ring 61 and the centering ring 72 are all coaxially arranged.
In this technical solution, the centralizer 1 has a hollow truncated cone structure, so that the centralizer 1 can be stably placed on a side slope. In actual use, the diameter of the centralizer boot 2 may be the same as the diameter of the bottom of the centralizer 1, and the two may be threaded. The lower bracket 7 is arranged in the centralizer boot 2, when in use, the centralizer boot 2 is firstly placed on a side slope, the center of the centering circular ring 71 is aligned with the center of an anchor hole of the anchor rod 4, then the anchor rod 4 is stretched into the centering circular ring 71, and the anchor rod 4 is initially centered through the centering circular ring 71. Preferably, a rubber pad may be disposed on the inner wall of the centering ring 71, so as to increase friction between the centering ring 71 and the anchor rod 4, and further perform preliminary limiting on the anchor rod 4. Then installing the upper bracket 6 above the centralizer 1, and adjusting the diameter of the clamping circular ring 61 to clamp the anchor rod 4; and the distance between the clamping circular ring 61 and the upper end face of the centering device 1 is adjusted by adjusting the length of each telescopic supporting leg 62, namely, the height of the anchor rod 4 is adjusted, and the anchor rod 4 is limited to move downwards, so that the height of the anchor rod 4 meets the setting requirement. And then, extending the grouting pipe into the anchor holes from the centralizer 1 and the centralizer boot 2 for grouting, and dismantling the slope elbow anchor rod construction centering and limiting device after the strength of the slurry 5 meets the requirement.
In another embodiment, the telescopic leg 62 includes an outer sleeve 621 and an inner rod 622, wherein one end of the inner rod 622 extends into the outer sleeve 621 and is screwed with the outer sleeve 621; the inner rod 622 is provided with a length indicator 623. The length of the telescoping leg 62 is adjusted by adjusting the length of the inner rod 622 extending into the outer sleeve 621. The length of the telescopic support leg 62 can be rapidly judged through the length mark 623, and then the setting height of the anchor rod 4 is calculated. At the same time, the telescopic support legs 62 are arranged to be the same length, so that the clamping circular ring 61 is parallel to the upper end face of the centering device 1.
In another embodiment, the bottom of the centralizer boot 2 is provided with a blade foot 21. Specifically, the blade leg 21 is disposed along the bottom of the centralizer boot 2 in a circle, the cross-sectional shape of the blade leg 21 is a right triangle, and the inclined surface thereof is directed toward the center of the centralizer boot 2. When the centralizer boot 2 is moved to a position where its center is in line with the anchor hole center, the blade foot 21 is inserted into the side slope, thereby fixing the centralizer boot 2 and the centralizer 1. The blade foot 21 may be of unitary construction with the centralizer boot 2.
In another embodiment, the clamping ring 61 includes a thin-walled steel belt 611, a hoop housing 613 and a screw 612, wherein the hoop housing 613 is fixedly connected with a fixed end of the thin-walled steel belt 611, and a movable end of the thin-walled steel belt 611 is provided with a plurality of engaging grooves matched with the screw 612 at intervals along the length direction thereof; the two ends of the hoop housing 613 are respectively provided with an extending port and an extending port through which the thin-wall steel belt 611 can pass, and the screw 612 is rotatably arranged in the hoop housing 613; after the free end of the thin-walled steel strip 611 extends into the hoop housing 613, the screw 612 is rotated so that the screw 612 engages the free end of the thin-walled steel strip 611.
In this embodiment, the movable end of the thin-walled steel strip 611 is extended from the extension port of the hoop housing 613 to form the clamping ring 61, and the diameter of the clamping ring 61 is adjusted by adjusting the length of the movable end of the thin-walled steel strip 611 extended from the extension port of the hoop housing 613 to clamp the anchor rod 4. And then the screw 612 is rotated to enable the screw teeth of the screw 612 to be meshed with the corresponding meshing grooves, and the thin-wall steel belt 611 is fixed, so that the anchor rod 4 is clamped.
In another embodiment, the inner wall of the thin-walled steel strip 611 is provided with a rubber pad. The friction force between the clamping circular ring 61 and the anchor rod 4 is increased through the rubber pad, so that the clamping circular ring 61 can clamp the anchor rod 4 more stably.
In another embodiment, the centralizer 1 includes a plurality of centralizer blocks, and the plurality of centralizer blocks are spliced end to end in sequence to form the centralizer 1. In particular, the two adjacent centralizer blocks are detachably connected, such as mortise and tenon joints, etc. To facilitate the observation of whether the centre of the centring ring 71 is aligned with the centre of the anchor hole, the centring device 1 is spliced again after the centring boot 2 has been positioned.
In another embodiment, the device further comprises a steel sleeve 3, wherein the diameter of the steel sleeve 3 is the same as the diameter of an anchor hole of the anchor rod 4, and the steel sleeve is coaxially arranged with the centering circular ring 71; the upper end surface of the steel sleeve 3 is fixedly connected with each of the fixing legs 61. When moving the centralizer boot 2, the steel sleeve 3 is first inserted into the anchor hole to assist in positioning the centralizer boot 2.
The invention also provides a construction method for using the slope elbow anchor rod construction centering and limiting device, which comprises the following steps:
s1, after the anchor hole is drilled, placing a centralizer boot 2, inserting a steel sleeve 3 into the anchor hole, and aligning the center of the centering ring 71 with the center of the anchor hole; the anchor rods 4 are then inserted into the centering ring 71;
s2, splicing the centralizer 1, and connecting the centralizer 1 with the centralizer boot 2;
s3, enabling the clamping circular ring 61 to penetrate through the anchor rod 4 and clamping the anchor rod 4; then each telescopic supporting leg 62 is hinged with the clamping circular ring 61 and the upper end face of the centering device 1 respectively;
and S4, adjusting the length of each telescopic supporting leg 62, and adjusting the anchor rod 4 to the designed height.
In this technical solution, in step S1, the steel sleeve 3 is used to assist in primary centering, and after the centering ring 71 is centered on the anchor hole, the blade leg 21 is inserted into the side slope for fixing. Further, in step S1, the portion of the end of the anchor rod 4, which is located outside the anchor hole and extends out of the clamped ring 61, is bent to 90 °. In order to enable the anchor rod 4 to be better clamped in the grid beam steel bars on the side slope, the whole stress effect is improved, and the end part of the anchor rod 4 is bent.
In step S2, the anchor rods 4 are initially centered and supported by the centering ring 71 when the centralizer 1 is spliced. In step S3, after the movable end of the thin-walled steel belt 611 bypasses the anchor rod 4 and is inserted into the hoop housing 613, the diameter of the clamping ring 61 is adjusted to enable the clamping ring 61 to clamp the anchor rod 4, and then the screw 612 is rotated to fix the anchor rod. Each of the telescoping legs 62 is then installed.
Further, in step S4, the height of the anchor rod is adjusted according to the distance between the bending position of the anchor rod 4 and the hole opening of the anchor hole. Specifically, the distance between the bending position of the anchor rod 4 and the anchor hole orifice is H, and the calculation is performed by the following formula:
where h1 is the height of the centralizer 1, h2 is the height of the centralizer boot 2 above the slope, L is the length of the telescopic leg 62, D is the radius of the upper end face of the centralizer 1. By adjusting the length of each telescopic leg 62, the distance between the bending position of the anchor rod 4 and the aperture of the anchor hole can be quickly and conveniently adjusted, and the depth of the anchor rod 4 inserted into the anchor hole and whether the anchor rod 4 is inserted into the soil layer can be judged by combining the length of the anchor rod 4 and the depth of the anchor hole, so that the height of the anchor rod 4 can be accurately adjusted to the designed height.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. The utility model provides a side slope elbow stock construction centering and stop device which characterized in that includes:
the centering device is of a hollow truncated cone structure; the bottom of the centralizer is detachably connected with a centralizer boot, and the centralizer boot is of a hollow cylindrical structure;
the upper bracket comprises a clamping circular ring and a plurality of telescopic supporting legs; the diameter of the clamping circular ring is adjustable, one end of any telescopic supporting leg is hinged with the clamping circular ring, and the other end of any telescopic supporting leg is hinged with the upper end face of the centering device; the length of each telescopic supporting leg is adjusted so as to adjust the distance between the clamping circular ring and the centering device;
the lower bracket comprises a centering circular ring with the inner diameter matched with the diameter of the anchor rod and a plurality of fixed supporting legs; the lower support is arranged in the centering boot, a plurality of fixed support legs are uniformly distributed along the periphery of the centering circular ring, one end of any fixed support leg is fixedly connected with the outer wall of the centering circular ring, and the other end of the fixed support leg is fixedly connected with the inner wall of the centering boot;
the centralizer, the centralizer boot, the clamping ring and the centering ring are all coaxially arranged.
2. The slope elbow anchor rod construction centering and limiting device of claim 1, wherein the telescopic support leg comprises an outer sleeve and an inner rod, and one end of the inner rod extends into the outer sleeve and is in threaded connection with the outer sleeve; the inner rod is provided with a length mark.
3. A slope bend anchor rod construction centering and limiting device as claimed in claim 1, wherein the bottom of said centralizer boot is provided with a blade foot.
4. The slope elbow anchor rod construction centering and limiting device according to claim 1, wherein the clamping ring comprises a thin-wall steel belt, a hoop shell and a screw rod, the hoop shell is fixedly connected with a fixed end of the thin-wall steel belt, and a plurality of meshing grooves matched with the screw rod are formed in a movable end of the thin-wall steel belt at intervals along the length direction of the movable end of the thin-wall steel belt; the two ends of the hoop shell are respectively provided with an extending opening and an extending opening through which the thin-wall steel belt can pass, and the screw is rotatably arranged in the hoop shell; and after the movable end of the thin-wall steel belt stretches into the hoop shell, the screw rod is rotated to enable the screw rod to be meshed with the movable end of the thin-wall steel belt.
5. The slope elbow anchor rod construction centering and limiting device according to claim 4, wherein a rubber pad is arranged on the inner wall of the clamping ring.
6. A slope bend anchor rod construction centering and limiting device as claimed in claim 1, wherein said centralizer includes a plurality of centralizer blocks which are spliced end to end in sequence to form said centralizer.
7. The slope elbow anchor rod construction centering and limiting device of claim 1, further comprising a steel sleeve, wherein the diameter of the steel sleeve is the same as the diameter of an anchor hole of an anchor rod and is coaxially arranged with the centering ring; the top of the steel sleeve is fixedly connected with each fixed supporting leg respectively.
8. A construction method using the slope elbow anchor rod construction centering and limiting device as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
s1, after the anchor holes are drilled, placing a centralizer boot, enabling a steel sleeve to be inserted into the anchor holes, and enabling the center of the centering ring to be aligned with the center of the anchor holes; then inserting an anchor rod into the centering circular ring;
s2, splicing the centralizer, and connecting the centralizer with the centralizer boot;
s3, enabling the clamping circular ring to penetrate through the anchor rod and clamping the anchor rod; then each telescopic supporting leg is hinged with the upper end surfaces of the clamping circular ring and the centering device respectively;
and S4, adjusting the length of each telescopic supporting leg, and adjusting the anchor rod to the designed height.
9. A construction method of a slope elbow anchor rod construction centering and limiting device according to claim 8, wherein in step S1, a portion of the anchor rod extending out of the clamped ring from one end of the anchor rod located outside the anchor hole is bent to 90 °.
10. The construction method of the slope elbow anchor rod construction centering and limiting device according to claim 9, wherein in the step S4, the height of the anchor rod is adjusted according to the distance between the bending position of the anchor rod and the anchor hole orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310026232.3A CN116065577A (en) | 2023-01-09 | 2023-01-09 | Slope elbow anchor rod construction centering and limiting device and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310026232.3A CN116065577A (en) | 2023-01-09 | 2023-01-09 | Slope elbow anchor rod construction centering and limiting device and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116065577A true CN116065577A (en) | 2023-05-05 |
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ID=86176310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310026232.3A Pending CN116065577A (en) | 2023-01-09 | 2023-01-09 | Slope elbow anchor rod construction centering and limiting device and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116065577A (en) |
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2023
- 2023-01-09 CN CN202310026232.3A patent/CN116065577A/en active Pending
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