CN220813425U - Bridge expansion joint convenient to equipment - Google Patents
Bridge expansion joint convenient to equipment Download PDFInfo
- Publication number
- CN220813425U CN220813425U CN202322256647.8U CN202322256647U CN220813425U CN 220813425 U CN220813425 U CN 220813425U CN 202322256647 U CN202322256647 U CN 202322256647U CN 220813425 U CN220813425 U CN 220813425U
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- Prior art keywords
- assembly
- threaded hole
- fixing
- expansion joint
- elastic rubber
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- 229910000831 Steel Inorganic materials 0.000 claims description 60
- 239000010959 steel Substances 0.000 claims description 60
- 238000009434 installation Methods 0.000 claims description 48
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 230000000712 assembly Effects 0.000 abstract description 12
- 238000000429 assembly Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 8
- 238000013016 damping Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 description 5
- 239000013013 elastic material Substances 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a bridge expansion joint convenient to assemble, which belongs to the technical field of bridge joints and comprises a fixing device, wherein a mounting assembly is arranged on the fixing device, a double-telescopic assembly is movably mounted on the mounting assembly, a deceleration strip assembly is movably mounted on the mounting assembly, the deceleration strip assembly is in contact connection with the double-telescopic assembly, and the deceleration strip assembly is positioned above the double-telescopic assembly; the device further comprises a fixing assembly, wherein the fixing assembly is arranged on the fixing device, the double telescopic assemblies and the speed bump assembly. Through the mode, the rapid assembly of the bridge joint is realized, and meanwhile, the damping effect of the bridge joint is improved by combining the deceleration strip and the bridge.
Description
Technical Field
The utility model relates to the technical field of bridge joints, in particular to a bridge expansion joint convenient to assemble.
Background
The bridge expansion joint is equipment needing to pay attention to, and is used for changing the distance between bridge sections caused by expansion and contraction of heat of bridge sections, so the deformation function of the bridge expansion joint is adopted to eliminate the influence of expansion and contraction of heat of bridge sections, meanwhile, the bridge joint also has a good shock insulation effect, in many prior arts, for example, a steel plate combined bridge expansion joint device disclosed in China patent CN208501481U, the steel plate combined bridge expansion joint device is characterized in that the side beams, the anchoring ribs, the middle beams, the combined shock absorber, the box body, the hanging bracket, the compression support, the pressure bearing support and the cross beam are identical in structure, the left side and the right side of the box body are combined to form a cavity with a movable space, the box body is arranged at the position between the beam end and the bridge abutment, the left side and the right side of the box body are provided with the corresponding anchoring ribs, and the side beams are arranged at the two sides of the box body, and the hanging bracket which are arranged in front and back of the box body is provided with the hanging bracket which is high and installed side by side, so that the bridge is assembled quickly.
But the speed bump and the bridge expansion joint cannot be combined into a whole, and meanwhile, the assembly is inconvenient.
Based on the above, the utility model designs a bridge expansion joint which is convenient to assemble so as to solve the problems.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model provides the bridge expansion joint which is convenient to assemble.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
The bridge expansion joint comprises a fixing device, wherein an installation assembly is arranged on the fixing device, a double expansion assembly is movably installed on the installation assembly, a deceleration strip assembly is movably installed on the installation assembly, the deceleration strip assembly is in contact connection with the double expansion assembly, and the deceleration strip assembly is positioned above the double expansion assembly;
The device further comprises a fixing assembly, wherein the fixing assembly is arranged on the fixing device, the double telescopic assemblies and the speed bump assembly.
Still further, fixing device includes left shape steel, right shape steel and fixed plate, left shape steel and right shape steel are fixed mounting respectively in the tip of left bridge section and the tip of right bridge section, installation component sets up on left shape steel and right shape steel, fixed component locates on left shape steel and the right shape steel, fixed plate fixed mounting is on left shape steel, right shape steel face the lateral wall of bridge end.
Still further, the installation component includes first mounting groove and installation slide rail, installation slide rail fixed mounting is on the adjacent lateral wall of left side shape steel and right side shape steel, equal swing joint of installation slide rail and two flexible subassemblies, deceleration strip subassembly, first mounting groove is seted up in the upper end of left side shape steel and right side shape steel, first mounting groove and two flexible subassemblies cooperation use.
Still further, two flexible subassemblies include elastic rubber piece subassembly and rubber strip subassembly, elastic rubber piece subassembly and rubber strip subassembly swing joint, elastic rubber piece subassembly is located the upper end of rubber strip subassembly, elastic rubber piece subassembly and installation slide rail swing joint, rubber strip subassembly and first mounting groove cooperation are used, fixed subassembly locates on elastic rubber piece subassembly and the rubber strip subassembly, elastic rubber piece subassembly and deceleration strip subassembly are connected.
Still further, elastic rubber piece subassembly includes elastic rubber piece and first slider, the inside steel sheet that has inlayed of elastic rubber piece, fixed mounting has the first slider that the cooperation installation slide rail used on the elastic rubber piece lateral wall, the second mounting groove has been seted up to elastic rubber piece's lower extreme, the second mounting groove is connected with the rubber strip subassembly, fixed subassembly locates on the first slider.
Still further, the rubber strip subassembly includes rubber strip main part and rubber column, rubber column and rubber strip main part fixed connection, rubber column and second mounting groove, first mounting groove all cooperate the use, fixed subassembly locates in the rubber strip main part.
Still further, the deceleration strip subassembly includes arc speed reducer body and second slider, fixed mounting has the second slider in the arc speed reducer body, second slider and installation slide rail cooperation slip use, the lower extreme of arc speed reducer body and the upper end contact connection of elastic rubber piece, fixed subassembly locates on the arc speed reducer body accomodates.
Further, the second sliding blocks are arranged on the side wall of the arc-shaped speed reducing plate main body at equal intervals; the speed bump assembly further comprises a baffle plate which is fixedly arranged between two groups of adjacent second sliding blocks and fixedly connected with the arc-shaped speed bump main body.
Still further, fixed subassembly includes first screw thread fixed subassembly, first screw thread fixed subassembly includes first screw hole, second screw hole, third screw hole and first screw, first screw hole is seted up on the arc speed reducer body, the second screw hole is seted up on the elastic rubber piece, the third screw hole is seted up on left shape steel and right shape steel, first screw hole, second screw hole and third screw hole are located same vertical axis, first screw hole, second screw hole and third screw hole all with first screw threaded connection.
Still further, fixed subassembly still includes second screw thread fixed subassembly, second screw thread fixed subassembly includes fourth screw hole, fifth screw hole, sixth screw hole and second screw, the fourth screw hole is seted up on elastic rubber piece, the fifth screw hole is seted up on the rubber strip main part, the sixth screw hole is seted up on left-hand member, fourth screw hole, fifth screw hole and sixth screw hole all are connected with second screw thread.
Advantageous effects
When the dual-expansion-joint bridge is used, the fixing device is arranged at the two adjacent bridge ends, the dual-expansion assembly is movably arranged on the mounting assembly, the deceleration strip assembly is in contact connection with the dual-expansion assembly, and the fixing device, the dual-expansion assembly and the deceleration strip assembly are fixed through the fixing assembly; through deceleration strip subassembly movable mounting on the installation component for the vehicle deceleration effect and the expansion joint of deceleration strip subassembly combine as an organic wholely, and the main part of deceleration strip subassembly has further increaseed the shock attenuation effect of bridge expansion joint for elastic material simultaneously.
When the elastic expansion joint is used, the first sliding block is in sliding connection with the installation sliding rail, the rubber column, the second installation groove and the first installation groove which are fixedly connected with the rubber strip main body are matched and fixed, the outer wall of the rubber strip main body is embedded into the inner ends of the second installation groove and the first installation groove, the quick positioning and the installation of the elastic expansion part are realized, the second sliding block is in sliding connection with the installation sliding rail, the second sliding block is arranged at the upper end of the elastic rubber block, the combination of the deceleration strip and the expansion joint is realized, and meanwhile, the arc-shaped deceleration plate main body is made of elastic materials, so that the damping effect of the expansion joint is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a perspective view of a bridge expansion joint body structure for easy assembly in accordance with the present utility model;
FIG. 2 is an elevation view of a bridge expansion joint structure of the present utility model for ease of assembly;
FIG. 3 is a left side view of a bridge expansion joint structure of the present utility model for ease of assembly;
FIG. 4 is a cross-sectional view taken along the direction A-A of FIG. 3;
Fig. 5 is a sectional view taken along the B-B direction of fig. 3.
Reference numerals in the drawings represent respectively:
1. Mounting device 11, left steel 12, right steel 13, mounting plate 2, mounting assembly 21, first mounting slot 22, mounting rail 3, dual telescoping assembly 31, elastomeric block assembly 311, elastomeric block 312, steel plate 313, first slider 314, second mounting slot 32, rubber strip assembly 321, rubber strip body 322, rubber column 4, speed reducer assembly 41, arcuate speed reducer body 42, second slider 43, baffle 5, mounting assembly 51, first threaded fastener assembly 511, first threaded hole 512, second threaded hole 513, third threaded hole 514, first screw 52, second threaded fastener assembly 521, fourth threaded hole 522, fifth threaded hole 523, sixth threaded hole 524, second screw.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The utility model is further described below with reference to examples.
Example 1
Referring to fig. 1-5 of the specification, a bridge expansion joint convenient to assemble comprises a fixing device 1, wherein a mounting assembly 2 is arranged on the fixing device 1, a double-telescopic assembly 3 is movably mounted on the mounting assembly 2, a deceleration strip assembly 4 is movably mounted on the mounting assembly 2, the deceleration strip assembly 4 is in contact connection with the double-telescopic assembly 3, and the deceleration strip assembly 4 is positioned above the double-telescopic assembly 3;
The device further comprises a fixing assembly 5, wherein the fixing assembly 5 is arranged on the fixing device 1, the double telescopic assemblies 3 and the speed reducing belt assembly 4.
The fixing device 1 is arranged at two adjacent bridge ends, the double telescopic assemblies 3 are movably arranged on the installation assemblies 2, the deceleration strip assemblies 4 are movably arranged on the installation assemblies 2, meanwhile, the deceleration strip assemblies 4 are in contact connection with the double telescopic assemblies 3, and the fixing device 1, the double telescopic assemblies 3 and the deceleration strip assemblies 4 are fixed through the fixing assemblies 5; through deceleration strip subassembly 4 movable mounting on installation component 2 for deceleration strip subassembly 4's vehicle deceleration action and expansion joint combine as an organic wholely, and deceleration strip subassembly 4's main part has further increased the shock attenuation effect of bridge expansion joint for elastic material simultaneously, realizes the fixed to deceleration strip subassembly 4 and two expansion joint subassemblies 3 through fixed subassembly 5.
Example 2
In some embodiments, as shown in fig. 1-5, the fixing device 1 comprises a left steel 11, a right steel 12 and a fixing plate 13, the left steel 11 and the right steel 12 are fixedly installed at the end of the left bridge section and the end of the right bridge section respectively, the installation component 2 is arranged on the left steel 11 and the right steel 12, the fixing component 5 is arranged on the left steel 11 and the right steel 12, the fixing plate 13 is fixedly installed on the side walls of the left steel 11 and the right steel 12 facing the bridge end, and the fixing plate 13 is embedded in the bridge.
The installation component 2 includes first mounting groove 21 and installation slide rail 22, installation slide rail 22 fixed mounting is on the adjacent lateral wall of left shape steel 11 and right shape steel 12, equal swing joint of installation slide rail 22 and two flexible subassemblies 3, deceleration strip subassembly 4, the upper end of left shape steel 11 and right shape steel 12 is seted up to first mounting groove 21, first mounting groove 21 and two flexible subassemblies 3 cooperation are used.
The double-telescopic assembly 3 comprises an elastic rubber block assembly 31 and a rubber strip assembly 32, the elastic rubber block assembly 31 and the rubber strip assembly 32 are movably connected, the elastic rubber block assembly 31 is located at the upper end of the rubber strip assembly 32, the elastic rubber block assembly 31 is movably connected with the mounting sliding rail 22, the rubber strip assembly 32 and the first mounting groove 21 are matched for use, the fixing assembly 5 is arranged on the elastic rubber block assembly 31 and the rubber strip assembly 32, and the elastic rubber block assembly 31 is connected with the deceleration strip assembly 4. A step of
The elastic rubber block assembly 31 comprises an elastic rubber block 311 and a first slider 313, a steel plate 312 is embedded in the elastic rubber block 311, the first slider 313 matched with the installation slide rail 22 is fixedly installed on the side wall of the elastic rubber block 311, a second installation groove 314 is formed in the lower end of the elastic rubber block 311, the second installation groove 314 is connected with the rubber strip assembly 32, and the fixing assembly 5 is arranged on the first slider 313.
The rubber strip assembly 32 comprises a rubber strip main body 321 and a rubber column 322, the rubber column 322 is fixedly connected with the rubber strip main body 321, the rubber column 322 is matched with the second mounting groove 314 and the first mounting groove 21, and the fixing assembly 5 is arranged on the rubber strip main body 321.
The deceleration strip assembly 4 comprises an arc-shaped deceleration plate main body 41 and a second sliding block 42, the second sliding block 42 is fixedly installed on the arc-shaped deceleration plate main body 41, the second sliding block 42 and the installation sliding rail 22 are matched for sliding use, the lower end of the arc-shaped deceleration plate main body 41 is in contact connection with the upper end of the elastic rubber block 311, and the fixing assembly 5 is arranged on the arc-shaped deceleration plate main body 41 in a storage mode.
The second sliding blocks 42 are arranged on the side wall of the arc-shaped speed reducer plate main body 41 at equal intervals; the speed bump assembly 4 further includes a baffle 43, where the baffle 43 is fixedly installed between two sets of adjacent second sliders 42 and is fixedly connected with the arc-shaped speed bump body 41.
Through first slider 313 and installation slide rail 22 sliding connection, rubber column 322 and second mounting groove 314, the cooperation of rubber strip main part 321 fixed connection, first mounting groove 21 is fixed simultaneously, the outer wall of rubber strip main part 321 inlays in the inner of second mounting groove 314 and first mounting groove 21, the quick location and the installation of elastic expansion part have been realized, through second slider 42 and installation slide rail 22 sliding connection, and second slider 42 installs in the upper end of elastic rubber piece 311, the realization deceleration strip combines as an organic wholely with the expansion joint, arc speed reducer body 41 is elastic material simultaneously, thereby the shock attenuation effect of expansion joint has further been promoted.
Example 3
In some embodiments, as shown in fig. 1-5, the fixing assembly 5 includes a first threaded fixing assembly 51, the first threaded fixing assembly 51 includes a first threaded hole 511, a second threaded hole 512, a third threaded hole 513, and a first screw 514, the first threaded hole 511 is formed on the arc-shaped speed reducer body 41, the second threaded hole 512 is formed on the elastic rubber block 311, the third threaded hole 513 is formed on the left-shaped steel 11 and the right-shaped steel 12, the first threaded hole 511, the second threaded hole 512, and the third threaded hole 513 are located on the same vertical central axis, and the first threaded hole 511, the second threaded hole 512, and the third threaded hole 513 are all in threaded connection with the first screw 514.
The fixing assembly 5 further includes a second threaded fixing assembly 52, the second threaded fixing assembly 52 includes a fourth threaded hole 521, a fifth threaded hole 522, a sixth threaded hole 523 and a second screw 524, the fourth threaded hole 521 is formed on the elastic rubber block 311, the fifth threaded hole 522 is formed on the rubber strip main body 321, the sixth threaded hole 523 is formed on the left-shaped steel 11, and the fourth threaded hole 521, the fifth threaded hole 522 and the sixth threaded hole 523 are all in threaded connection with the second screw 524.
The left-shaped steel 11, the elastic rubber block 311, the rubber strip body 321 and the arc-shaped speed reducer body 41 are fixed through the threaded connection of the first screw holes 511, the second screw holes 512 and the third screw holes 513 and the first screw 514, and the connection among the elastic rubber block 311, the rubber strip body 321 and the left-shaped steel 11 is further reinforced through the threaded connection of the fourth screw holes 521, the fifth screw holes 522 and the sixth screw holes 523 and the second screw 524.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. Bridge expansion joint convenient to equipment, including fixing device (1), its characterized in that: the fixing device is characterized in that a mounting assembly (2) is arranged on the fixing device (1), a double telescopic assembly (3) is movably mounted on the mounting assembly (2), a speed reducing belt assembly (4) is movably mounted on the mounting assembly (2), the speed reducing belt assembly (4) is in contact connection with the double telescopic assembly (3), and the speed reducing belt assembly (4) is positioned above the double telescopic assembly (3);
The device further comprises a fixing component (5), wherein the fixing component (5) is arranged on the fixing device (1), the double telescopic components (3) and the deceleration strip component (4).
2. The bridge expansion joint convenient to assemble according to claim 1, wherein: fixing device (1) is including left shape steel (11), right shape steel (12) and fixed plate (13), left shape steel (11) and right shape steel (12) fixed mounting are in the tip of the bridge section on the left side and the tip of the bridge section on the right respectively, installation component (2) set up on left shape steel (11) and right shape steel (12), fixed component (5) are located on left shape steel (11) and right shape steel (12), fixed plate (13) fixed mounting is on the lateral wall of left shape steel (11), right shape steel (12) towards the bridge end.
3. The bridge expansion joint convenient to assemble according to claim 2, wherein: the installation component (2) comprises a first installation groove (21) and an installation sliding rail (22), the installation sliding rail (22) is fixedly installed on the adjacent side walls of the left-shaped steel (11) and the right-shaped steel (12), the installation sliding rail (22), the double telescopic components (3) and the speed reducing belt component (4) are movably connected, the first installation groove (21) is formed in the upper ends of the left-shaped steel (11) and the right-shaped steel (12), and the first installation groove (21) and the double telescopic components (3) are matched for use.
4. A bridge expansion joint according to claim 3 for ease of assembly, wherein: the double-telescopic-assembly-type rubber belt comprises a double-telescopic-assembly-type rubber belt body and is characterized in that the double-telescopic-assembly-type rubber belt body (3) comprises an elastic rubber block assembly (31) and a rubber strip assembly (32), the elastic rubber block assembly (31) and the rubber strip assembly (32) are movably connected, the elastic rubber block assembly (31) is located at the upper end of the rubber strip assembly (32), the elastic rubber block assembly (31) is movably connected with an installation sliding rail (22), the rubber strip assembly (32) and a first installation groove (21) are matched for use, and the fixing assembly (5) is arranged on the elastic rubber block assembly (31) and the rubber strip assembly (32), and the elastic rubber block assembly (31) is connected with a deceleration strip assembly (4).
5. The bridge expansion joint convenient to assemble according to claim 4, wherein: the elastic rubber block assembly (31) comprises an elastic rubber block (311) and a first sliding block (313), a steel plate (312) is embedded in the elastic rubber block (311), a first sliding block (313) matched with the installation sliding rail (22) is fixedly installed on the side wall of the elastic rubber block (311), a second installation groove (314) is formed in the lower end of the elastic rubber block (311), the second installation groove (314) is connected with the rubber strip assembly (32), and the fixing assembly (5) is arranged on the first sliding block (313).
6. The bridge expansion joint convenient to assemble according to claim 5, wherein: the rubber strip assembly (32) comprises a rubber strip main body (321) and a rubber column (322), the rubber column (322) and the rubber strip main body (321) are fixedly connected, the rubber column (322) and the second mounting groove (314) and the first mounting groove (21) are matched for use, and the fixing assembly (5) is arranged on the rubber strip main body (321).
7. The bridge expansion joint convenient to assemble according to claim 6, wherein: the speed bump assembly (4) comprises an arc-shaped speed bump body (41) and a second sliding block (42), the second sliding block (42) is fixedly installed on the arc-shaped speed bump body (41), the second sliding block (42) and the installation sliding rail (22) are matched for sliding use, the lower end of the arc-shaped speed bump body (41) is connected with the upper end of the elastic rubber block (311) in a contact mode, and the fixing assembly (5) is arranged on the arc-shaped speed bump body (41) in a storage mode.
8. The bridge expansion joint convenient to assemble according to claim 7, wherein: the second sliding blocks (42) are arranged on the side wall of the arc-shaped speed reducer body (41) at equal intervals; the speed bump assembly (4) further comprises a baffle plate (43), and the baffle plate (43) is fixedly arranged between two groups of adjacent second sliding blocks (42) and is fixedly connected with the arc-shaped speed bump main body (41).
9. The bridge expansion joint convenient to assemble according to claim 8, wherein: the fixing assembly (5) comprises a first threaded fixing assembly (51), the first threaded fixing assembly (51) comprises a first threaded hole (511), a second threaded hole (512), a third threaded hole (513) and a first screw (514), the first threaded hole (511) is formed in an arc-shaped speed reduction plate main body (41), the second threaded hole (512) is formed in an elastic rubber block (311), the third threaded hole (513) is formed in left-shaped steel (11) and right-shaped steel (12), the first threaded hole (511), the second threaded hole (512) and the third threaded hole (513) are located on the same vertical central axis, and the first threaded hole (511), the second threaded hole (512) and the third threaded hole (513) are in threaded connection with the first screw (514).
10. The bridge expansion joint convenient to assemble according to claim 9, wherein: the fixing assembly (5) further comprises a second threaded fixing assembly (52), the second threaded fixing assembly (52) comprises a fourth threaded hole (521), a fifth threaded hole (522), a sixth threaded hole (523) and a second screw (524), the fourth threaded hole (521) is formed in the elastic rubber block (311), the fifth threaded hole (522) is formed in the rubber strip main body (321), the sixth threaded hole (523) is formed in the left-shaped steel (11), and the fourth threaded hole (521), the fifth threaded hole (522) and the sixth threaded hole (523) are all in threaded connection with the second screw (524).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322256647.8U CN220813425U (en) | 2023-08-22 | 2023-08-22 | Bridge expansion joint convenient to equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322256647.8U CN220813425U (en) | 2023-08-22 | 2023-08-22 | Bridge expansion joint convenient to equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220813425U true CN220813425U (en) | 2024-04-19 |
Family
ID=90702018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322256647.8U Active CN220813425U (en) | 2023-08-22 | 2023-08-22 | Bridge expansion joint convenient to equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220813425U (en) |
-
2023
- 2023-08-22 CN CN202322256647.8U patent/CN220813425U/en active Active
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