CN221052890U - Self-adaptive shock insulation joint cover plate capable of releasing temperature deformation - Google Patents
Self-adaptive shock insulation joint cover plate capable of releasing temperature deformation Download PDFInfo
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- CN221052890U CN221052890U CN202322350101.9U CN202322350101U CN221052890U CN 221052890 U CN221052890 U CN 221052890U CN 202322350101 U CN202322350101 U CN 202322350101U CN 221052890 U CN221052890 U CN 221052890U
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- 238000009413 insulation Methods 0.000 title claims abstract description 52
- 230000035939 shock Effects 0.000 title claims abstract description 52
- 238000002955 isolation Methods 0.000 claims description 18
- 230000001050 lubricating effect Effects 0.000 claims description 15
- 230000003044 adaptive effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims 1
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 7
- 239000000314 lubricant Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a self-adaptive shock insulation joint cover plate capable of releasing temperature deformation, which comprises the following components: the cover plate body is provided with an arc-shaped piece on the plate surface, and the arc-shaped piece is provided with an arc-shaped surface opposite to the shock insulation joint; one side plate surface of the cover plate body can be simultaneously abutted against the first main body structure and the second main body structure; the arc-shaped surface can be simultaneously abutted against the first main body structure and the second main body structure; the first connecting piece and the second connecting piece are respectively fixed with the first main body structure and the second main body structure, and the third connecting piece is fixed on the arc-shaped piece; the tension spring I is connected with the connecting piece I and the connecting piece III respectively, and the tension spring II is connected with the connecting piece II and the connecting piece III respectively. When the first main body structure and the second main body structure move in opposite directions to a large extent, the cover plate body can be jacked up, and when the first main body structure and the second main body structure move to a small extent, the cover plate body is always abutted against the first main body structure and the second main body structure at the same time; after the deformation of the first main body structure and the second main body structure is finished, the cover plate body can be automatically reset.
Description
Technical Field
The utility model relates to the field of building shock insulation structures, in particular to a self-adaptive shock insulation seam cover plate capable of releasing temperature deformation.
Background
Along with the popularization and application of the building vibration isolation technology, the number of the vibration isolation structures is greatly increased, and one key point in the design of the vibration isolation structures is the design of a vibration isolation seam cover plate, so that the unreasonable design of the vibration isolation seam cover plate can seriously influence the performance exertion of the vibration isolation seam.
In the shock insulation design of the existing building, the shock insulation seam cover plate is generally fixed at one end and slides at the other end, and the following problems mainly exist in the structural form: firstly, the main lap joint length of the shock insulation seam cover plate is arranged on one side of the shock insulation seam, so that the lap joint length requirement on the lap joint side of the shock insulation seam cover plate is high, particularly in high-intensity areas of earthquakes, the width of the shock insulation seam of the structure can reach more than 800mm, and in some cases, enough space is not provided for arranging the shock insulation seam cover plate; secondly, under the action of temperature, when the structures on two sides of the shock insulation joint are deformed, the shock insulation joint cover plate and the main body structure are deformed relatively to damage the joint positions, so that the attractiveness and the use are affected; thirdly, the fixed side structure of the shock insulation seam cover plate is complex, the construction precision is not easy to meet the requirements, good flatness cannot be achieved, the shock insulation seam cover plate is easy to shake, particularly when the shock insulation seam cover plate is used for deformation seams of garage layers, shake and noise are easy to generate under the action of vehicle load, and even the shock insulation seam cover plate can cause structural damage.
In the patent 'independent reset shock insulation seam cover plate device' (application number 2022109231415), the automatic reset of the cover plate and the overlap joint length symmetry of the cover plates on two sides can be realized through the arrangement of the independent reset component, and the device realizes the automatic reset function of the cover plate, but the elastic glue at two ends of the cover plate is easily destroyed under the temperature deformation, the cover plate can be jacked by a main body structure, and the temperature deformation belongs to long-term deformation in the shock insulation structure, so that the deformation seriously affects the position of the shock insulation seam cover plate for a long time, and the shock insulation seam cover plate is attractive and used.
Therefore, how to provide an adaptive vibration-isolating slit cover plate capable of releasing temperature deformation, so that the above problems can be overcome, is a problem that needs to be solved by those skilled in the art.
Disclosure of utility model
In view of this, the present utility model provides a self-adaptive shock insulation slit cover plate capable of releasing temperature deformation.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a self-adaptive shock insulation joint cover plate capable of releasing temperature deformation covers shock insulation joints formed by adjacent first main body structures and second main body structures together, and comprises:
The cover plate body is provided with an arc-shaped piece on one side plate surface, the arc-shaped piece is provided with an arc-shaped surface, the arc-shaped line of the arc-shaped surface is parallel to the length direction of the cover plate body and is close to the cover plate body, and the arc-shaped surface is opposite to the shock insulation seam; the side plate surface of the cover plate body, provided with the arc-shaped piece, can be simultaneously abutted against the first main body structure and the second main body structure; the arc-shaped surface can be simultaneously abutted against the first main body structure and the second main body structure;
The elastic pieces are provided with a plurality of elastic pieces and are sequentially arranged along the length direction of the cover plate body, each elastic piece comprises a first connecting piece, a second connecting piece, a third connecting piece, a first tension spring and a second tension spring, the first connecting piece is fixed with the first main body structure, the second connecting piece is fixed with the second main body structure, the first connecting piece and the second connecting piece are opposite to each other along the width direction of the vibration isolation joint, the first connecting piece and the second connecting piece are respectively arranged on the inner side of the vibration isolation joint, and the third connecting piece is centrally fixed on the arc-shaped piece; one end of the first tension spring and one end of the second tension spring are connected with the third connecting piece, the other end of the first tension spring is connected with the first connecting piece, and the other end of the second tension spring is connected with the second connecting piece.
Compared with the prior art, the utility model discloses the self-adaptive shock insulation joint cover plate capable of releasing temperature deformation, and the cover plate body can be reliably overlapped with the first main structure and the second main structure; when the first main body structure and the second main body structure move in opposite directions to a large extent, the first main body structure is close to the second main body structure or the second main body structure is close to the first main body structure, the cover plate body can be jacked up to release the deformation of the shock insulation joint; under the condition that the first main body structure and the second main body structure do not move relatively, move back to back or move relatively in a smaller range, a side plate surface of the cover plate body, which is provided with the arc-shaped piece, can be always and simultaneously abutted with the first main body structure and the second main body structure; when the first main body structure and the second main body structure are shifted, the first tension spring and the second tension spring in the elastic piece can ensure that the cover plate body and the arc-shaped piece are always opposite to the shock insulation joint; after the deformation of the first main body structure and the second main body structure is finished, the cover plate body can be automatically reset.
Preferably, the arc-shaped piece comprises a plurality of arc-shaped plates which are sequentially and equidistantly arranged along the length direction of the cover plate body, the arc-shaped plates are vertically fixed with the cover plate body, the plate surfaces of the arc-shaped plates are vertical to the length direction of the cover plate body, and the arc-shaped surfaces are jointly defined by the arc-shaped side walls of the arc-shaped plates; the connecting piece III is fixed on one side plate surface of the arc-shaped plate in the middle. The arc-shaped side wall of the arc-shaped plate can reliably slide and abut against the first main body structure and the second main body structure, and meanwhile, the support strength of the cover plate body can be improved through the plurality of arc-shaped plates.
Preferably, a layer of concrete is paved on a side plate surface of the cover plate body, which is far away from the arc-shaped plate, and a reinforcing steel bar net is embedded in the concrete. The design of concrete and reinforcing bar net can improve the support strength of apron body, is favorable to the reset of apron body simultaneously.
Preferably, the novel cover plate further comprises a lubricating piece, wherein the upper end of the first main body structure and the upper end of the second main body structure are both fixed with the lubricating piece, and the cover plate body is provided with a side plate surface of the arc plate which can be in sliding butt joint with the lubricating piece. The lubricating piece can prevent the abrasion of the first main body structure, the second main body structure and the cover plate body.
Preferably, the lubricant is a metal plate or a polytetrafluoroethylene plate. The material has good lubricating effect.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of an adaptive seismic isolation joint cover plate in an initial state after installation, wherein the adaptive seismic isolation joint cover plate can release temperature deformation;
FIG. 2 is a top view of the self-adaptive seismic isolation joint cover plate after installation, wherein the self-adaptive seismic isolation joint cover plate can release temperature deformation;
FIG. 3 is a partial isometric view of an adaptive seismic isolation joint cover plate that is temperature deformable to release;
FIG. 4 is a schematic cross-sectional view of a cover plate body in a temperature-deformable adaptive shock insulation slit cover plate;
FIG. 5 is a schematic cross-sectional view of the first and second body structures of the present application as they move in opposite directions with a small amplitude;
FIG. 6 is a schematic cross-sectional view of the first and second body structures of the present application moving away from each other;
FIG. 7 is a schematic cross-sectional view of the first and second body structures of the present application moving substantially toward each other;
FIG. 8 is a schematic cross-sectional view of the first body structure of the present application, the second body structure being away from the first body structure;
FIG. 9 is a schematic cross-sectional view of a first body structure of the present application, a second body structure of the present application being slightly closer to the first body structure;
FIG. 10 is a schematic cross-sectional view of a first body structure of the present application being stationary and a second body structure being substantially adjacent to the first body structure.
In the figure:
1 is a main structure I, 2 is a main structure II, 3 is a shock insulation seam, 4 is a cover plate body, 5 is a connecting piece I, 6 is a connecting piece II, 7 is a connecting piece III, 8 is a tension spring I, 9 is a tension spring II, 10 is an arc plate, 11 is concrete, 12 is a reinforcing mesh, and 13 is a lubricating piece.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. 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 discloses a self-adaptive shock insulation joint cover plate capable of releasing temperature deformation, wherein a cover plate body 4 can be reliably overlapped with a main structure I1 and a main structure II 2, and the cover plate body 4 has the same overlap length at two sides of a shock insulation joint 3; by designing the arc-shaped piece, when the main body structure I1 and the main body structure II 2 move in opposite directions to a large extent, and the main body structure I1 is close to the main body structure II 2 or the main body structure II 2 is close to the main body structure I1 to a large extent, the cover plate body 4 can be jacked up to release the deformation of the shock insulation joint 3; under the condition that the main body structure I and the main body structure II do not move relatively, move oppositely or move oppositely in a smaller range, the side plate surface of the cover plate body 4 provided with the arc-shaped piece can be always and simultaneously abutted with the main body structure I and the main body structure II 2, so that deformation release of the shock insulation joint 3 under the action of temperature and small earthquake is realized, namely, when the main body structure 1 and the main body structure 2 displace within a certain deformation range, the cover plate body 4 cannot be jacked up; through the arrangement of the elastic piece, when the main body structure I1 and the main body structure II 2 are shifted, the tension spring I8 and the tension spring II 9 in the elastic piece can ensure that the cover plate body 4 and the arc piece are always opposite to the positions of the shock insulation joints 3, and the cover plate body 4 is prevented from falling to the inner sides of the shock insulation joints 3; after the deformation of the first main body structure 1 and the second main body structure 2 is finished, the cover plate body 4 can be automatically reset.
Examples
Referring to fig. 1-10, which are schematic views of the whole and part of the structure of an embodiment of the present utility model, the present utility model specifically discloses a self-adaptive shock insulation seam cover plate capable of releasing temperature deformation, which covers a shock insulation seam 3 formed by two adjacent main structures 1 and 2, wherein the upper end surface of the main structure 1 is level with the upper end surface of the main structure 2, and the upper end surface of the main structure 1 and the upper end surface of the main structure 2 are always in a level state when the main structure 1 and the main structure 2 are shifted due to temperature change or vibration;
the self-adaptive shock insulation joint cover plate capable of releasing temperature deformation comprises:
The cover plate body 4 is in a rectangular plate shape, the length direction of the cover plate body 4 is the same as the length direction of the shock insulation joint 3, a plurality of cover plate bodies 4 can be sequentially arranged along the length direction of the shock insulation joint 3, an arc-shaped piece is arranged on one side plate surface of the cover plate body 4 and is arranged centrally along the width direction of the cover plate body 4, the arc-shaped piece is provided with an arc-shaped surface, the arc-shaped line of the arc-shaped surface is parallel to the length direction of the cover plate body 4, the arc-shaped line of the arc-shaped surface is close to the cover plate body 4, and the arc-shaped surface is opposite to the shock insulation joint 3;
Under the condition that the main body structure I and the main body structure II 2 do not move relatively, move oppositely or move relatively in a smaller range, a side plate surface of the cover plate body 4 provided with the arc-shaped piece can be simultaneously abutted with the main body structure I and the main body structure II 2, and the arc-shaped piece is arranged at the inner side of the shock insulation joint 3;
When the main body structure 1 and the main body structure 2 move in opposite directions, and the main body structure 1 is close to the main body structure 2 or the main body structure 2 is close to the main body structure 1, the arc surface can be simultaneously in sliding contact with the main body structure 1 and the main body structure 2, and meanwhile, the cover plate body 4 is simultaneously separated from contact with the main body structure 1 and the main body structure 2, and in the moving process of the cover plate body 4, the plate surface of the cover plate body 4 is always parallel to the upper end surface of the main body structure 1;
The elastic pieces are provided with a plurality of elastic pieces and are sequentially and equidistantly arranged along the length direction of the cover plate body 4;
The elastic piece comprises a first connecting piece 5, a second connecting piece 6, a third connecting piece 7, a first tension spring 8 and a second tension spring 9, wherein the first connecting piece 5 is fixed with the first main body structure 1, the second connecting piece 6 is fixed with the second main body structure 2, the first connecting piece 5 and the second connecting piece 6 are opposite to each other along the width direction of the shock insulation joint 3, the first connecting piece 5 and the second connecting piece 6 are arranged on the inner side of the shock insulation joint 3, and the third connecting piece 7 is centrally fixed on the arc-shaped piece;
One end of the first tension spring 8 and one end of the second tension spring 9 are hooked with the third connecting piece 7, the other end of the first tension spring 8 is hooked with the first connecting piece 5, and the other end of the second tension spring 9 is hooked with the second connecting piece 6; in this embodiment, the tension spring one 8 and the tension spring two 9 in the same elastic member are arranged in an inverted V shape, and the center lines of the two in the length direction together define a vertical plane.
The arc-shaped piece comprises a plurality of arc-shaped plates 10 which are sequentially and equidistantly arranged along the length direction of the cover plate body 4, the arc-shaped plates 10 are vertically fixed with the cover plate body 4, the plate surfaces of the arc-shaped plates 10 are vertical to the length direction of the cover plate body 4, and the arc-shaped side walls of the arc-shaped plates 10 jointly define an arc-shaped surface; the third connecting piece 7 is centrally fixed on one side plate surface of the arc-shaped plate 10, and the number of the elastic pieces is smaller than or equal to the number of the arc-shaped plates 10.
In the situation that the first main body structure 1 and the second main body structure 2 do not move relatively, after the self-adaptive shock insulation joint cover plate capable of releasing temperature deformation is installed in place, an initial distance A is formed between the arc-shaped plate 10 and the first main body structure 1, an initial distance B is formed between the arc-shaped plate 10 and the second main body structure 2, and the initial distance A is equal to the initial distance B;
One deck concrete 11 has been laid on the face of one side that arc 10 was kept away from to apron body 4, and pre-buried reinforcing bar net 12 has in the concrete 11, makes on the one hand that the upside of apron body 4 and the up end material and the colour of main structure 1 and main structure 2 match, on the other hand, can improve the intensity and the corrosion resistance of apron body 4.
Further specifically, the novel cover plate comprises a lubricating piece 13, the lubricating piece 13 is plate-shaped, the upper end of the first main structure 1 and the upper end of the second main structure 2 are tightly fixed with the lubricating piece 13, one side plate surface of the cover plate body 4 provided with the arc plate 10 can be in sliding butt with the lubricating piece 13, and the lubricating piece 13 can ensure that the cover plate body 4, the first main structure 1 and the second main structure 2 cannot be severely worn. The lubricant 13 is a metal plate or a polytetrafluoroethylene plate, and in the present application, the lubricant 13 is a steel plate.
When the main body structure 1 and the main body structure 2 shift due to temperature or vibration, the width of the shock insulation joint 3 becomes larger or smaller;
In this embodiment, when the first main body structure 1 and the second main body structure 2 do not move relatively, move back to back or move relatively in a smaller extent, a side plate surface of the cover plate body 4 provided with the arc plate 10 is always in sliding contact with the lubricant 13;
In this embodiment, when the first main structure 1 and the second main structure 2 move substantially in opposite directions, and the first main structure 1 is substantially close to the second main structure 2 or the second main structure 2 is substantially close to the first main structure 1, the arc surface is simultaneously in sliding contact with the first main structure 1 and the second main structure 2, and the cover plate body 4 is simultaneously out of contact with the first main structure 1 and the second main structure 2; when the main body structure I and the main body structure II 2 are reset, the tension springs I and II 8 and 9 pull the cover plate body 4, so that the plate surface of one side of the cover plate body 4 provided with the arc-shaped plate 10 is restored to be in contact with the lubricating piece 13;
In this embodiment, when the primary structure 1 or the secondary structure 2 is shifted separately, the plate surface of the cover plate body 4 is always horizontally arranged, and the arc surface is always centrally arranged with respect to the shock insulation slit 3.
In addition, the utility model can also be used for processing the conventional structural joints, such as deformation joints, and also can be used for the joints of bridge structures.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a but self-adaptation shock insulation seam apron of release temperature deformation covers shock insulation seam (3) that adjacent major structure one (1) and major structure two (2) constitute jointly, its characterized in that includes:
The anti-vibration cover comprises a cover plate body (4), wherein the length direction of the cover plate body (4) is the same as the length direction of the vibration isolation joint (3), an arc-shaped piece is arranged on one side plate surface of the cover plate body (4), the arc-shaped piece is provided with an arc-shaped surface, the arc-shaped line of the arc-shaped surface is parallel to the length direction of the cover plate body (4) and is close to the cover plate body (4), and the arc-shaped surface is opposite to the vibration isolation joint (3); a side plate surface of the cover plate body (4) provided with the arc-shaped piece can be simultaneously abutted against the first main body structure (1) and the second main body structure (2); the arc-shaped surface can be simultaneously abutted against the first main body structure (1) and the second main body structure (2);
The elastic pieces are provided with a plurality of elastic pieces and are sequentially arranged along the length direction of the cover plate body (4), each elastic piece comprises a first connecting piece (5), a second connecting piece (6), a third connecting piece (7), a first tension spring (8) and a second tension spring (9), the first connecting piece (5) is fixed with the first main body structure (1), the second connecting piece (6) is fixed with the second main body structure (2), the first connecting piece (5) and the second connecting piece (6) are opposite to each other along the width direction position of the vibration isolation joint (3), the first connecting piece (5) and the second connecting piece (6) are uniformly arranged on the inner side of the vibration isolation joint (3), and the third connecting piece (7) is centrally fixed on the arc-shaped piece; one end of the tension spring I (8) and one end of the tension spring II (9) are connected with the connecting piece III (7), the other end of the tension spring I (8) is connected with the connecting piece I (5), and the other end of the tension spring II (9) is connected with the connecting piece II (6).
2. The self-adaptive vibration-isolating joint cover plate capable of releasing temperature deformation according to claim 1, wherein the arc-shaped piece comprises a plurality of arc-shaped plates (10) which are sequentially and equidistantly arranged along the length direction of the cover plate body (4), the arc-shaped plates (10) are vertically fixed with the cover plate body (4), the plate surface of each arc-shaped plate (10) is vertical to the length direction of the cover plate body (4), and the arc-shaped side walls of the arc-shaped plates (10) jointly define the arc-shaped surface; and the connecting piece III (7) is centrally fixed on one side plate surface of the arc-shaped plate (10).
3. The self-adaptive vibration-isolating joint cover plate capable of releasing temperature deformation according to claim 2, wherein a layer of concrete (11) is paved on a side plate surface of the cover plate body (4) far away from the arc-shaped plate (10), and a reinforcing steel bar net (12) is embedded in the concrete (11).
4. The self-adaptive vibration-isolating joint cover plate capable of releasing temperature deformation according to claim 2, further comprising a lubricating piece (13), wherein the upper end of the first main body structure (1) and the upper end of the second main body structure (2) are both fixed with the lubricating piece (13), and a side plate surface of the cover plate body (4) provided with the arc plate (10) can be in sliding abutting connection with the lubricating piece (13).
5. A temperature deformable adaptive seismic isolation joint cover plate according to claim 4, wherein said lubrication element (13) is a metal plate or a polytetrafluoroethylene plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350101.9U CN221052890U (en) | 2023-08-31 | 2023-08-31 | Self-adaptive shock insulation joint cover plate capable of releasing temperature deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322350101.9U CN221052890U (en) | 2023-08-31 | 2023-08-31 | Self-adaptive shock insulation joint cover plate capable of releasing temperature deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221052890U true CN221052890U (en) | 2024-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322350101.9U Active CN221052890U (en) | 2023-08-31 | 2023-08-31 | Self-adaptive shock insulation joint cover plate capable of releasing temperature deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221052890U (en) |
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2023
- 2023-08-31 CN CN202322350101.9U patent/CN221052890U/en active Active
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