CN221099557U - Pier stud reinforcement protective layer thickness accurate measurement fixture device - Google Patents
Pier stud reinforcement protective layer thickness accurate measurement fixture device Download PDFInfo
- Publication number
- CN221099557U CN221099557U CN202323122238.5U CN202323122238U CN221099557U CN 221099557 U CN221099557 U CN 221099557U CN 202323122238 U CN202323122238 U CN 202323122238U CN 221099557 U CN221099557 U CN 221099557U
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- ruler
- measuring
- frame
- pier stud
- fixture device
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 35
- 238000005259 measurement Methods 0.000 title claims description 12
- 239000011241 protective layer Substances 0.000 title claims description 5
- 210000000078 claw Anatomy 0.000 claims abstract description 9
- 239000010410 layer Substances 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 description 17
- 239000010959 steel Substances 0.000 description 17
- 230000003014 reinforcing effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The application relates to the technical field of measuring tools, in particular to a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer, which comprises a ruler body, a ruler frame, measuring claws and a first fixing piece, wherein the ruler body is provided with scales on the ruler surface, and one end of the ruler body is a tight abutting end; the ruler frame is connected with the ruler body in a sliding way, and the sliding direction is the long side direction of the ruler body; the measuring jaw is arranged on the ruler frame, and a distance measuring area is formed between the abutting end and one side of the measuring jaw away from the abutting end; the first fixing piece is arranged on the ruler frame and used for fixing the ruler frame on the ruler body; according to the designed fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer, the ruler frame is fixed on the ruler body through the first fixing piece, so that data measured in a measuring place inconvenient to observe can be brought to an observing place convenient to observe.
Description
Technical Field
The application relates to the technical field of measuring tools, in particular to a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer.
Background
The column pier is also called pier foundation, is generally located raft foundation upper portion, and the post root, before pouring, personnel at first carry out the ligature of steel reinforcement cage, place the steel reinforcement cage at the job site that has handled in advance after accomplishing the ligature, carry out the installation of template afterwards, after accomplishing the installation of template, need practical measuring tool to measure the distance in template and the reinforcing bar outside to satisfy the construction standard.
The patent document with the publication number of CN204788108U discloses a simple large-size vernier caliper for measurement, which comprises a directly purchased steel ruler as a main ruler, a movable measuring jaw of engineering plastic moves on the steel ruler as an auxiliary ruler, wherein a measuring surface in a fixed measuring jaw is directly pressed on a scale mark of the steel ruler, which is close to 10cm, and is fixed, the fixed measuring jaw and the movable measuring jaw are embedded with garden steel as an inner diameter measuring head, the width and the outer diameter measuring head are embedded with wear-resistant steel bars which can be slidably increased, and the inner diameter reading and the outer diameter reading are respectively realized at two notch vernier dividing lines of the movable measuring jaw.
For the related technology, in some special environments, such as environments with dim light and incapability of direct vision of observers, the measured data are required to be brought into the environment convenient to observe by the observers, if the movable measuring rule is touched by mistake in the process of moving the caliper, the movable measuring jaw moves, so that the data are distorted, and the data read by the observers are also unreal data.
Disclosure of utility model
In order to bring the data of the callipers in the measuring place to the observing place for observation, the measured data of the callipers are kept unchanged, the application provides a fixture device for precisely measuring the thickness of a pier column reinforcement protection layer, which adopts the following technical scheme:
The fixture device comprises a ruler body, a ruler frame, a measuring claw and a first fixing piece, wherein scales are arranged on the ruler surface of the ruler body, and one end of the ruler body is a tight abutting end;
The ruler frame is connected with the ruler body in a sliding manner, and the sliding direction is the long side direction of the ruler body;
The measuring claw is arranged on the ruler frame, and a distance measuring area is formed between the abutting end and one side, far away from the abutting end, of the measuring claw;
The first fixing piece is arranged on the ruler frame and used for fixing the ruler frame on the ruler body.
Through adopting above-mentioned technical scheme, personnel are being inconvenient for reading measuring data's measurement ground, are fixed in the chi frame with on the chi body through first mounting, take the fixture to the observation ground of being convenient for reading data again and read, guarantee the in-process at the removal fixture through first mounting, the chi frame slides on the chi body, the accuracy of a data.
Optionally, a depth gauge is fixedly connected to the gauge frame, the depth gauge is parallel to the gauge body, one end of the depth gauge is fixedly connected with the gauge frame, and the other end of the depth gauge extends out of one end, away from the abutting end, of the gauge body.
Through adopting above-mentioned technical scheme, when passing steel reinforcement cage and template butt in will supporting tight end from the steel reinforcement cage, need not personnel's hand and pass steel reinforcement cage pulling chi frame, only need pull the chi frame through the depth chi in the steel reinforcement cage and slide.
Optionally, the abutting end is an arc end, and the arc opening faces to a side of the blade away from the abutting end.
By adopting the technical scheme, when the protrusion exists on the surface of the template, the arc-shaped end reduces the contact area with the surface of the template compared with the plane end, and the distortion of data caused by the protrusion is reduced.
Optionally, a level gauge is mounted on the ruler body.
By adopting the technical scheme, the ruler body and the template are kept vertical, and the validity of measurement data is guaranteed.
Optionally, a first light source is mounted on the blade, and the first light source is used for illuminating the level.
By adopting the technical scheme, personnel can observe the levelness of the level under the environment with poor sight.
Optionally, two measuring claws are arranged on the ruler frame, the measuring claws are located on two sides of the ruler body in the long-side direction, one surface of each measuring claw, which is abutted to an abutting object, is an abutting surface, the abutting surface is perpendicular to the ruler surface, the abutting surface is perpendicular to the long-side direction of the ruler body, and the abutting surfaces of the two measuring claws are located on the same plane.
Through adopting above-mentioned technical scheme for when personnel stimulate the depth chi and drive measuring jaw and reinforcing bar butt, can not lead to the focus unstable because of blade unilateral atress, support tight end and take place to slide.
Optionally, the measuring jaw is fixedly connected with the ruler frame.
By adopting the technical scheme, the measuring jaw and the ruler frame are convenient to install.
Optionally, the measuring jaw is rotatably connected with the frame, and the measuring jaw can rotate into the projection of the blade face.
Through adopting above-mentioned technical scheme, when the steel reinforcement cage gap is less, personnel rotate the projection of chi face with the measuring jaw in, reduce the width of fixture, be convenient for pass less gap.
Optionally, the device further comprises a linkage assembly, wherein the linkage assembly is used for driving the measuring jaw to rotate.
Through adopting above-mentioned technical scheme, drive the measuring jaw through the interlock subassembly and rotate.
Optionally, the linkage assembly includes a connecting seat and two connecting rods, one end of each connecting rod is rotationally connected with one measuring jaw, the other end of each connecting rod is rotationally connected with the connecting seat, and the connecting rods are parallel to three lines of the rotating axis of the measuring jaw, the rotating axis of the connecting seat, the rotating axis of the measuring jaw and the rotating axis of the measuring frame, and form three edges of a triangular prism; the connecting seat slides along the long side direction of the ruler body so that the connecting seat drives the measuring jaw to rotate along the ruler frame through the connecting rod.
Through adopting above-mentioned technical scheme, the connecting seat drives the connecting rod at gliding in-process and rotates, and the connecting rod drives the measuring jaw and rotates on the chi frame to this rotation through control connecting seat control measuring jaw.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the utility model provides a pier stud protective layer thickness accurate measurement fixture device, personnel are being inconvenient for survey after measuring the data in the survey ground of observing to bring the observation ground of observing to be convenient for to observe on being fixed in the chi body with the chi frame through first mounting.
2. According to the designed fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer, the ruler body and the template are guaranteed to be perpendicular through the installation of the level meter.
3. The utility model provides a pier stud protective layer thickness accurate measurement fixture device of design, personnel observe the spirit level through first light source in the dim department of light to this levelness of guaranteeing the spirit level.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer according to embodiment 1 of the present application;
FIG. 2 is another schematic view of a fixture for precisely measuring the thickness of a pier stud reinforcement protection layer according to embodiment 1 of the present application;
fig. 3 is a schematic diagram of the overall structure of a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer according to embodiment 2 of the present application;
FIG. 4 is another schematic view of an apparatus for precisely measuring the thickness of a pier stud reinforcement protection layer according to embodiment 2 of the present application;
FIG. 5 is an enlarged schematic view of portion A of FIG. 4;
Fig. 6 is a schematic view of the use of the fixture apparatus.
Reference numerals: 1. a ruler body; 11. a tightening end; 12. a guide chute; 13. a limit bar; 2. a ruler frame; 21. a depth gauge; 22. a guide groove; 23. a guide block; 3. a measuring jaw; 31. an abutment surface; 4. a first fixing member; 5. a level gauge; 6. a first light source; 7. a linkage assembly; 71. a connecting seat; 72. a connecting rod; 73. pulling the rod; 74. a second fixing member; 8. a template; 9. and (5) a reinforcement cage.
Detailed Description
The application is described in further detail below with reference to fig. 1-5.
The embodiment of the application discloses a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer.
Example 1
Referring to fig. 1, a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer comprises a ruler body 1, a ruler frame 2, a measuring jaw 3 and a first fixing piece 4, wherein one end of the ruler body 1 is a tight supporting end 11, the ruler frame 2 is slidably connected to the ruler body 1, the measuring jaw 3 is fixedly connected to the ruler frame 2, a distance measuring area is formed between the tight supporting end 11 and one side, far away from the tight supporting end 11, of the measuring jaw 3, and the first fixing piece 4 is installed on the ruler frame 2 and used for fixing the ruler frame 2 to the ruler body 1.
Referring to fig. 1 and 2, the rule 1 is in a long strip shape, in this embodiment, one of the largest areas of the rule 1 is a rule surface, the other largest area is a rule back, scales are arranged on the rule surface along the long side direction of the rule 1, the scales are arranged along the long side of the rule 1, the abutting end 11 is triangular along the section parallel to the rule surface, and one end of the triangle far away from the rule frame 2 is a round angle.
Referring to fig. 1 and 2, the frame 2 is fitted over the blade 1 and is slidable in the longitudinal direction of the blade 1.
Referring to fig. 1, in the present embodiment, the first fixing member 4 is a bolt, the first fixing member 4 passes through the frame 2 along a direction perpendicular to the plane of the rule and abuts against the rule body 1, and the first fixing member 4 is in threaded connection with the frame 2.
Referring to fig. 1 and 2, during measurement, the abutting end 11 needs to be abutted with the template after passing through the reinforcement cage, so that in the measurement process, a person needs to pull the ruler frame 2 by passing a hand through the reinforcement cage, so that the measuring jaw 3 is abutted with the outer side of the reinforcement, and the measurement is inconvenient; therefore, in order to facilitate the personnel to drive the rule frame 2 to move, the depth rule 21 is fixed on the rule frame 2, one end of the depth rule 21 is welded with one side of the rule frame 2 away from the abutting end 11, the other end extends out of one end of the rule body 1 away from the abutting end 11, and the long side of the depth rule 21 is parallel to the long side of the rule body 1.
Referring to fig. 1 and 2, in order to facilitate sliding of the depth gauge 21, the blade 1 is provided with a guide groove 12 on the back, the guide groove 12 is provided along the long side of the blade 1, and penetrates through the end of the blade 1 away from the abutting end 11, and the depth gauge 21 can slide in the guide groove 12 along the long side direction of the blade 1.
Referring to fig. 1 and 2, further, since one end of the depth gauge 21 is welded to the frame 2, the depth gauge 21 is only placed in the guide groove 12, and therefore, when one end of the depth gauge 21 away from the frame 2 is broken off, the moment is large and deformation of the depth gauge 21 is easily caused, and therefore, one end of the blade 1 away from the abutting end 11 is welded with the limit bar 13 on the back of the blade, the depth gauge 21 is arranged between the limit bar 13 and the blade 1 in a penetrating manner, and one side of the limit bar 13 close to the blade is contacted with one side of the depth gauge 21 away from the blade.
Referring to fig. 1, in order to ensure that the blade 1 is horizontally placed, a level gauge 5 is adhered to the end of the blade 1 away from the abutting end 11, and a first light source 6 is adhered to one side of the blade 1 for illuminating the level gauge 5 in order to observe the levelness of the level gauge 5 in the case of dim light, in which the first light source 6 is a spotlight in this embodiment, due to the problem of light in the template.
Referring to fig. 1 and 2, in the present embodiment, the measuring jaw 3 is welded to a side wall of the frame 2 near the abutting end, the long side of the blade 1 is horizontally arranged, and when the blade surface of the blade 1 is vertical, the measuring jaw 3 is located at one of the upper and lower sides of the blade 1, and the side of the measuring jaw 3 away from the abutting end 11 is an abutting surface 31 for abutting against a steel bar, and the abutting surface 31 is perpendicular to the blade surface and perpendicular to the long side of the blade 1;
When measuring template and reinforcing bar, will support tight end 11 and template and support tightly, personnel make measuring jaw 3 and reinforcing bar outside carry out the butt through pulling depth chi 21, if be equipped with only one measuring jaw 3 on the chi frame 2, when measuring jaw 3 and reinforcing bar butt, blade 1 one side atress, can make support tight end 11 and template production slip, cause data error, in order to balance blade 1 atress, measuring jaw 3 is equipped with two, blade 1's long side level sets up, and when blade 1's chi face is vertical, two measuring jaws 3 are located blade 1's upper and lower both sides respectively, and two measuring jaw 3 butt faces 31 are in the coplanar.
The embodiment of the application relates to a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer, which comprises the following implementation principle: after the tight end 11 is abutted with the template after penetrating the steel bar from the inner side of the steel bar, and the levelness of the level meter 5 is observed, the measuring staff pulls the depth gauge 21 to abut the measuring jaw 3 with the outer side of the steel bar, the ruler frame 2 and the ruler body 1 are fixed through the first fixing piece 4, and then the staff brings the measuring device out of the template for observation.
Example 2
Referring to fig. 3 and 4, the difference between this embodiment and embodiment 1 is that the connection mode of the measuring jaw 3 and the frame 2 is different, in this embodiment, two measuring jaws 3 are provided, the long side of the blade 1 is horizontally disposed, when the blade surface of the blade 1 is vertical, the measuring jaws 3 are respectively located at the upper and lower sides of the blade 1, the two measuring jaws 3 at the two sides of the blade 1 are respectively rotationally connected with the frame 2, the rotation axis is perpendicular to the blade surface, the rotation axes of the two measuring jaws 3 are symmetrically disposed with the center line of the blade surface in the long side direction of the blade 1, and when the two measuring jaws 3 rotate towards the center line of the blade surface in the long side direction of the blade 1, the two measuring jaws 3 can be simultaneously located in the projection of the blade surface, and by changing the rotation of the measuring jaws 3, the fixture device passes through a small gap.
Referring to fig. 4 and 5, in order to drive the rotation of the measuring jaw 3, the fixture device further adds a linkage assembly 7, the linkage assembly 7 includes a connecting seat 71 and two connecting rods 72, the connecting seat 71 is located at one side of the ruler frame 2 near the abutting end 11, and is located between the two measuring jaws 3, and can slide along the long side direction of the ruler body 1, two sides of the connecting seat 71 near the measuring jaw 3 are respectively connected with the measuring jaw 3 through one connecting rod 72, one end of the connecting rod 72 is rotationally connected with the connecting seat 71, the other end is rotationally connected with one side of the measuring jaw 3 near the connecting seat 71, the rotation axes of two ends of the connecting rod 72 are parallel to the rotation axes of the measuring jaw 3 and the ruler frame 2, the connecting seat 71 drives the connecting rod 72 to rotate when the connecting rod 72 slides along the ruler body 1, and the connecting rod 72 drives the measuring jaw 3 to rotate into or out of the projection of the ruler surface.
Referring to fig. 4 and 5, in order to facilitate the sliding of the connecting seat 71 by a person at the end of the blade 1 remote from the abutting end 11, the connecting seat 71 is welded with a pull rod 73 at a remote position, one end of the pull rod 73 is welded to the side of the connecting seat 71 remote from the abutting end 11, and the other end extends to the side of the depth gauge 21 remote from the frame 2 along the longitudinal direction of the blade 1.
Referring to fig. 3 and 4, in order to guide the pull rod 73, on one hand, a guide groove 22 is formed in the frame 2, the guide groove 22 is formed along the longitudinal direction of the blade 1, and penetrates through the frame 2 at both ends of the longitudinal direction of the blade 1, the pull rod 73 slides in the guide groove 22 along the longitudinal direction of the blade 1, on the other hand, a guide block 23 is welded to one end of the depth gauge 21 away from the frame 2, and the pull rod 73 is arranged on the guide block 23 in a penetrating manner and can slide on the guide block 23 along the longitudinal direction of the blade 1.
Referring to fig. 3, in order to fix the rotation position of the measuring jaw 3, the linkage assembly 7 further includes a second fixing member 74, in this embodiment, the second fixing member 74 is a tightening bolt, the second fixing member 74 passes through the guide block 23 to abut against the pulling rod 73, and the second fixing member 74 is in threaded connection with the guide block 23.
The embodiment of the application relates to a fixture device for precisely measuring the thickness of a pier stud reinforcement protection layer, which comprises the following implementation principle: when a person needs to pass through the gap which is too small in the gap between the steel bars, the person pulls the pull rod 73, the pull rod 73 drives the connecting seat 71 to slide, the connecting seat 71 drives the connecting rod 72 to rotate, the connecting rod 72 pulls the measuring jaw 3 to rotate into the projection plane of the ruler surface, the width of the clamp device is reduced, the clamp device passes through the small gap, and the pull rod 73 is pushed after passing through the gap to enable the measuring jaw 3 to rotate out of the projection plane of the ruler surface, and then measurement is carried out.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. Accurate measurement fixture device of pier stud protective layer thickness, its characterized in that: the ruler comprises a ruler body (1), a ruler frame (2), a measuring jaw (3) and a first fixing piece (4), wherein scales are arranged on the ruler surface of the ruler body (1), and one end of the ruler body (1) is a propping end (11);
the ruler frame (2) is in sliding connection with the ruler body (1), and the sliding direction is the long side direction of the ruler body (1);
The measuring jaw (3) is arranged on the ruler frame (2), and a distance measuring area is formed between the abutting end (11) and one side, far away from the abutting end (11), of the measuring jaw (3);
The first fixing piece (4) is arranged on the ruler frame (2) and is used for fixing the ruler frame (2) on the ruler body (1).
2. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 1, wherein: the utility model discloses a ruler, including chi frame (2), chi frame (2) are gone up fixedly connected with depth chi (21), depth chi (21) with blade (1) parallel arrangement, depth chi (21) one end with blade frame (2) fixed connection, the other end extends blade (1) is kept away from the one end of tight end (11) is supported.
3. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 2, wherein: the abutting end (11) is an arc-shaped end, and the arc-shaped opening faces to one side of the ruler body (1) away from the abutting end (11).
4. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 3, wherein: a level meter (5) is arranged on the ruler body (1).
5. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 4, wherein: a first light source (6) is arranged on the ruler body (1), and the first light source (6) is used for illuminating the level meter (5).
6. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 5, wherein: be equipped with two on chi frame (2) measuring jaw (3), a plurality of measuring jaw (3) are located blade (1) are in the both sides of long limit direction, the one side of measuring jaw (3) and butt thing butt is butt face (31), butt face (31) perpendicular to chi face, just butt face (31) with blade (1) long limit direction is perpendicular, two measuring jaw (3) butt face (31) are in the coplanar.
7. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to any one of claims 1 to 6, wherein: the measuring claw (3) is fixedly connected with the ruler frame (2).
8. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to any one of claims 1 to 6, wherein: the measuring jaw (3) is rotationally connected with the ruler frame (2), and the measuring jaw (3) can rotate into the projection of the ruler surface of the ruler body (1).
9. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 8, wherein: the device also comprises a linkage assembly (7), wherein the linkage assembly (7) is used for driving the measuring jaw (3) to rotate.
10. The fixture device for precisely measuring the thickness of the pier stud reinforcement protection layer according to claim 9, wherein: the linkage assembly (7) comprises a connecting seat (71) and two connecting rods (72), one end of each connecting rod (72) is rotationally connected with one measuring jaw (3), the other end of each connecting rod is rotationally connected with the connecting seat (71), the connecting rods (72) are parallel to the rotating axis of the measuring jaw (3) along the rotating axis of the connecting seat (71) and the three lines of the measuring jaw (3) along the rotating axis of the ruler frame (2), and three edges of a triangular prism are formed; the connecting seat (71) slides along the long side direction of the ruler body (1) so that the connecting seat (71) drives the measuring jaw (3) to rotate along the ruler frame (2) through the connecting rod (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323122238.5U CN221099557U (en) | 2023-11-20 | 2023-11-20 | Pier stud reinforcement protective layer thickness accurate measurement fixture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323122238.5U CN221099557U (en) | 2023-11-20 | 2023-11-20 | Pier stud reinforcement protective layer thickness accurate measurement fixture device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221099557U true CN221099557U (en) | 2024-06-07 |
Family
ID=91312483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323122238.5U Active CN221099557U (en) | 2023-11-20 | 2023-11-20 | Pier stud reinforcement protective layer thickness accurate measurement fixture device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221099557U (en) |
-
2023
- 2023-11-20 CN CN202323122238.5U patent/CN221099557U/en active Active
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