CN219710063U - Steel trestle assembled shaping guardrail structure - Google Patents
Steel trestle assembled shaping guardrail structure Download PDFInfo
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- CN219710063U CN219710063U CN202320976630.7U CN202320976630U CN219710063U CN 219710063 U CN219710063 U CN 219710063U CN 202320976630 U CN202320976630 U CN 202320976630U CN 219710063 U CN219710063 U CN 219710063U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000007493 shaping process Methods 0.000 title claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 2
- 238000003466 welding Methods 0.000 description 14
- 238000005520 cutting process Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Abstract
The utility model discloses a steel trestle assembled shaping guardrail structure, which is characterized in that a fixing base in the longitudinal direction is arranged at a proper position of a side opening of a steel trestle panel, a limiting groove for installing a vertical rod guiding position is arranged on the fixing base, a lock catch is arranged for temporarily limiting and fixing the vertical rods, and then a horizontal connecting rod is inserted into the adjacent vertical rods to form a temporary guardrail protection structure.
Description
Technical Field
The utility model relates to the technical field of temporary engineering structure construction. More particularly, the utility model relates to a steel trestle assembled shaping guardrail structure.
Background
Including the guardrail structure in the steel landing stage structure, the steel landing stage guardrail structure is generally set up according to following mode during construction:
(1) The guardrail posts of the general steel trestle all adopt 12#H-shaped steel, and the periphery of the bottom of the steel is fully welded with the panel of the steel trestle;
(2) The steel trestle guardrail structure is formed by arranging transverse steel pipes at the positions 60cm and 120cm away from the bridge deck as connection, and arranging a 180cm foot blocking plate at the bottom.
The construction process and the obtained steel trestle guardrail structure have the following defects:
(1) The steel trestle is of a temporary structure, the steel trestle needs to be completely dismantled after being used, the bottom of the guardrail structure is welded and connected with the bridge deck, a cutting process is also needed during the dismantling, cutting gas or electric energy is needed to be consumed, and resource waste is caused;
(2) When the steel trestle structure is put into another project from one project, the guardrail is installed and connected in a welding way, and then the steel trestle structure is cut and removed after finishing, and the phenomenon of air pollution and resource waste can be generated by welding again;
(3) After the guardrail is cut, a part of profile steel materials still remain on the panel, so that secondary cutting conditions are generated, and resource waste is caused.
Disclosure of Invention
The utility model aims to provide a steel trestle assembled shaping guardrail structure, which aims to solve the technical problem that the steel trestle guardrail structure in the prior art is inconvenient to install and detach due to the fact that the steel trestle guardrail structure can only be connected in a welding mode.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a steel trestle fabricated shaped guardrail structure comprising:
the fixing base is arranged on two sides of each steel trestle panel in the width direction along the length direction of the steel trestle, the fixing base is welded and fixed with the steel trestle panels, a notch is formed in one side of the fixing base facing the middle of the bridge deck, the notch extends towards the inside of the fixing base along the L-shaped direction to form a limiting groove, and the limiting groove penetrates through the fixing base upwards to be arranged;
the vertical rod comprises a vertical column, a bottom plate is fixed at the bottom of the vertical column, a supporting rib plate is connected to the lower end of the vertical column, the bottom of the supporting rib plate is fixedly connected with the upper surface of the bottom plate, the top of the supporting rib plate is lower than the top of a notch, the cross section of the notch is matched with the lower end of the vertical rod, so that the lower end of the vertical rod can enter the deepest part of a limit groove from the notch, inserting rods are connected to the upper end of the vertical column at intervals along the vertical direction, inserting holes are formed in the inserting rods, and horizontal connecting rods are jointly inserted into the adjacent inserting holes in the longitudinal bridge;
the lock catch is detachably connected to the fixing base and is abutted to one side, close to the notch, of the upright post, and the lock catch is used for limiting the upright post to the deepest part of the limiting groove.
Preferably, the upper surface of unable adjustment base is towards the bottom position of spacing groove is provided with spacing screw, the hasp includes:
the locking plate is horizontally arranged on the upper surface of the fixed base and spans across the two sides of the limiting groove, one side of the locking plate facing the bottom of the limiting groove is abutted against the upright post, the two ends of the locking plate are respectively provided with a locking hole, the locking plate is connected with the fixed base by screwing in a locking bolt between the locking hole and the fixed base, and a limiting screw hole is formed in the position, opposite to the lower side, of the locking plate, of the limiting groove;
and the limiting bolts are respectively screwed into the corresponding positions of the bottom plate, which are arranged in each limiting screw hole in a downward screwing way, and the bottoms of the limiting bolts are abutted to the upper surface of the bottom plate.
Preferably, the lock hole at two ends of the lock plate comprises a fixed end hole and a movable end hole, the movable end hole is an arc-shaped slot hole penetrating in the width direction of the lock plate, the upper surface of the fixed base is symmetrically provided with fixed holes corresponding to the fixed end hole, the fixed holes and the corresponding fixed end holes are screwed with one locking bolt together, and the fixed holes and the corresponding arc-shaped slot holes are screwed with one locking bolt together.
Preferably, the fixing base is a channel steel or a section steel, the non-sealing surface of the channel steel is welded and fixed with the panel of the steel trestle, the notch on the channel steel is of an inverted T-shaped structure, the length of the lower end of the notch is greater than that of the bottom plate, the width of the inner side of the channel steel is greater than that of the bottom plate, and the limiting groove is formed in the web plate of the channel steel and is greater than the diameter of the upright post.
Preferably, the bottom plate coincides with the center of the upright post, and all the supporting rib plates are symmetrically arranged along the axial direction of the upright post.
Preferably, the supporting rib plates are symmetrically arranged in four, one compartment is formed between two adjacent supporting rib plates in the horizontal direction, and the two limit bolts are respectively positioned in one of the two opposite compartments.
Preferably, the inserting rod is of an L-shaped rod-shaped structure, the inserting hole with an upward opening direction is formed after the inserting rod is connected with the upright post, and the depth of the inserting hole is larger than the width of the horizontal connecting rod.
The utility model at least comprises the following beneficial effects: according to the steel trestle assembled shaping guardrail structure, the fixing base in the longitudinal direction is arranged at the proper position of the edge opening of the steel trestle panel, the limiting groove for installing the vertical rod guiding position is arranged on the fixing base, the vertical rods are temporarily limited and fixed through the lock catch, and the horizontal connecting rods are inserted into the adjacent vertical rods, so that the temporary guardrail protection structure is formed, the installation and dismantling work efficiency is high, the construction period is saved, the problems of repeated welding and cutting of the guardrail structure are effectively avoided, welding rods, oxygen and a large amount of manual use are reduced, the exhaust gas pollution caused by repeated welding and oxygen cutting or the noise pollution caused by grinding wheel sawing cutting are reduced, the environmental pollution and the harm to the body of operators are reduced, the maintenance efficiency of the guardrail is improved, the components are easy to produce in batches, the standardization and the refinement of the structure size are improved, the repeated turnover use is realized, and the economy is good.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a front view block diagram of the present utility model;
FIG. 2 is a top view of the structure of the present utility model;
FIG. 3 is an enlarged side view of the latch of the present utility model;
FIG. 4 is a schematic view of the horizontal connecting rod of the present utility model;
fig. 5 is a top view of the pole of the present utility model.
Description of the specification reference numerals: 1. the steel stack bridge deck, 2, unable adjustment base, 3, notch, 4, spacing groove, 5, stand, 6, bottom plate, 7, support rib plate, 8, inserted bar, 9, socket, 10, horizontal connecting rod, 11, hasp, 12, lock plate, 13, locking bolt, 14, spacing bolt, 15, fixed end hole, 16, activity end hole.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
In the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1 to 5, the steel trestle assembled shaping guardrail structure of the utility model comprises:
the fixing base 2 is arranged on two sides of each steel trestle panel in the width direction along the length direction of the steel trestle, the fixing base 2 is welded and fixed with the steel trestle panels, a notch 3 is formed in one side of the fixing base 2 facing the middle of the bridge deck, the notch 3 extends to the inside of the fixing base 2 along the L-shaped direction to form a limit groove 4, and the limit groove 4 is upwards communicated with the fixing base 2;
the vertical rod comprises a vertical column 5, a bottom plate 6 is fixed at the bottom of the vertical column 5, a supporting rib plate 7 is connected to the lower end of the vertical column 5, the bottom of the supporting rib plate 7 is fixedly connected with the upper surface of the bottom plate 6, the top of the supporting rib plate 7 is lower than the top of the notch 3, the cross section of the notch 3 is matched with the lower end of the vertical rod, so that the lower end of the vertical rod can enter the deepest part of the limit groove 4 from the notch 3, inserting rods 8 are connected to the upper end of the vertical column 5 at intervals vertically, inserting holes 9 are formed in the inserting rods 8, and a horizontal connecting rod 10 is commonly inserted into the adjacent inserting holes 9 in the vertical bridge;
the lock catch 11 is detachably connected to the fixed base 2 and is abutted to one side, close to the notch 3, of the upright 5, and is used for limiting the upright 5 to the deepest part of the limiting groove 4.
The steel trestle assembly type shaping guardrail structure of this embodiment adopts the following mode to carry out when the installation:
(1) The fixed base 2 is made of steel, the cut L-shaped limit grooves 4 and the fixed bases 2 of the notch 3 are welded with the steel trestle surface 1 at proper positions on two sides of the width of each steel trestle surface, so that firmness and reliability are ensured, the limit grooves 4 and the notch 3 form a positioning track for the lower end of the vertical rod, the position of the notch 3 is positioned on the inner side of a bridge deck, the upper end of the notch 3 is larger than the diameter of the upright post 5, and the lower end of the notch is larger than the length of the bottom plate 6, and the vertical rod can smoothly enter the inner side of the positioning track;
(2) The upright post 5 adopts a steel pipe, is in girth welding connection with the steel bottom plate 6, and is welded with a supporting rib plate 7 between the bottom plate 6 and the upright post 5, so that the overall stability of the upright post 5 is improved, and then a plug rod 8 is arranged at 60cm and 120cm positions on the upright post 5 and is used for installing a horizontal connecting rod 10;
(3) When the upright post 5 enters the innermost side, namely the deepest position, of the limiting groove 4, a lock catch 11 device is arranged on one side, facing the notch 3, of the upright post 5, and limiting is carried out on the upright post 5;
(4) When the vertical rod is installed, aligning the holes of the horizontal connecting rod 10 with the vertical inserted rod 8 to form an edge protection railing, and forming an assembled shaping guardrail structure with the fixed base 2;
(5) After the lock catch 11 is disassembled, the lower end of the vertical rod is taken out of the notch 3 along the limit groove 4, so that the dismantling work of the protective railing can be completed, and then the protective railing is transported for recycling.
According to the steel trestle assembled shaping guardrail structure, the vertical fixing base 2 is arranged at the proper position of the edge opening of the steel trestle panel, the limiting groove 4 for installing the vertical rod guiding position is arranged on the fixing base 2, the vertical rods are temporarily limited and fixed through the lock catches 11, and the horizontal connecting rods 10 are inserted into the adjacent vertical rods, so that the temporary guardrail protective structure is finally formed, the problems of repeated welding and cutting of the guardrail structure are effectively avoided, welding rods, oxygen and a large amount of manual use are reduced, the waste gas pollution caused by repeated welding and oxygen cutting or the noise pollution caused by grinding wheel sawing cutting are reduced, and the environmental pollution and the harm to the body of operators are reduced; when the guardrail is damaged, the guardrail is easy to disassemble and install, the maintenance efficiency of the guardrail is improved, the guardrail installing and disassembling work efficiency and the turnover use times are improved, the construction period is saved, the safety protection is ensured in advance, the components are easy to produce in batches, and the standardization and refinement of the structural dimension are improved.
In another technical solution, as shown in fig. 1-3, a bottom position of the upper surface of the fixed base 2 facing the limiting groove 4 is provided with a limiting screw hole, and the lock catch 11 includes:
the locking plate 12 is horizontally arranged on the upper surface of the fixed base 2 and spans across two sides of the limit groove 4, one side of the locking plate 12 facing the bottom of the limit groove 4 is abutted against the upright post 5, two ends of the locking plate 12 are respectively provided with a locking hole, the locking plate is connected with the fixed base 2 by screwing a locking bolt 13 in the locking hole, and a limit screw hole is formed in a position, opposite to the lower side, of the locking plate 12, of the limit groove 4;
and the limit bolts 14 are respectively screwed downwards in each limit screw hole, and the bottoms of the limit bolts are abutted to the corresponding positions on the upper surface of the bottom plate 6.
After the vertical rod moves to the deepest position of the limit groove 4 along the limit groove 4, the lock plate 12 is installed, and is combined with the view shown in fig. 2, the lock plate 12 is installed on the left side of the vertical column 5 and abuts against the vertical column 5, then is locked through the locking bolt 13 and acts together with the side wall of the limit groove 4, the vertical rod is limited in the horizontal direction integrally, then the limit bolt 14 is screwed in the limit screw hole on the lock plate 12 and the fixed base 2 until the bottom of the limit bolt 14 abuts against the locking bottom plate 6, so that the vertical rod is limited, the bottom plate 6 and the vertical column 5 are prevented from sliding easily, the lock catch 11 can be checked by unscrewing the limit bolt 14 and the locking bolt 13 when the vertical rod is disassembled, the fixed limit of the vertical rod is released, and the vertical rod moves out reversely along the limit groove 4 without cutting.
In another technical scheme, as shown in fig. 2-3, the locking holes at two ends of the locking plate 12 include a fixed end hole 15 and a movable end hole 16, the movable end hole 16 is an arc-shaped slot hole penetrating toward the width direction of the locking plate 12, the upper surface of the fixed base 2 is symmetrically provided with a fixed hole corresponding to the fixed end hole 15, the fixed hole and the corresponding fixed end hole 15 are screwed into one locking bolt 13 together, and the fixed hole and the corresponding arc-shaped slot hole are screwed into one locking bolt 13 together.
One end of the lock plate 12 is set as a fixed end, and the other end is set as a movable end, so that the lock plate 12 can penetrate into a locking bolt 13 through a fixed end hole 15 and a fixed hole on the fixed base 2 to lock the connection position, the lock plate 12 can be mounted on the fixed base 2 in advance, when not screwed, the lock plate 12 can rotate in the horizontal plane around the fixed end hole 15 and the fixed hole on the same vertical direction so as not to block a path to facilitate mounting of the upright post, after the upright post reaches the deepest part of the limit groove 4, the lock plate 12 is rotated to abut against the upright post 5, and then a locking bolt 13 is screwed into the fixed hole and the arc-shaped slotted hole of the corresponding movable end together to lock and limit.
In another technical scheme, as shown in fig. 1-3, the fixing base 2 is a channel steel or a section steel, the non-sealing surface of the channel steel is welded and fixed with the panel of the steel trestle, the notch 3 on the channel steel is of an inverted T-shaped structure, the length of the lower end of the notch 3 is greater than that of the bottom plate 6, the width of the inner side of the channel steel is greater than that of the bottom plate 6, and the limiting groove 4 is formed in the web plate of the channel steel and has a width greater than the diameter of the upright post 5.
The fixed base 2 is a channel steel or a section steel, taking a 12.6 channel steel as an example, an L-shaped limit groove 4 and an inverted T-shaped notch 3 are cut on the fixed base 2, a non-sealing surface is welded with a panel, welding is needed on two sides of a longitudinal bridge of the channel steel or the section steel, and a positioning track is ensured to be firm and reliable, wherein the side opening position is positioned on the inner side of a bridge deck, the length is 168mm, the height is 36mm, the width of the L-shaped limit groove 4 at the upper position of the channel steel is 54mm, and the upright rod can be ensured to smoothly enter the inner side of the positioning track; the pole setting adopts length 1.3m diameter 48mm steel pipe, carries out the girth welding with the bottom plate 6 of 6mm steel sheet and is connected to weld 2cm high, 5mm thick steel sheet, welding stand 5 formation support floor 7 in bottom plate 6 surface diagonal direction, promote stand 5 overall stability, secondly set up inserted bar 8 in 60cm, 120cm department in the pole setting, each steel component is drawn materials conveniently, and is with low costs, also is favorable to quick assembly.
In another technical scheme, as shown in fig. 2 and 5, the bottom plate 6 coincides with the center of the upright post 5, and all the supporting rib plates 7 are symmetrically arranged along the axial direction of the upright post 5, so that standardized prefabricated installation is facilitated, and the overall stability of the upright post 5 is improved.
In another technical solution, as shown in fig. 2 and 5, four supporting ribs 7 are symmetrically arranged, a compartment is formed between two adjacent supporting ribs 7 in the horizontal direction, and two limiting bolts 14 are respectively positioned in one of the two opposite compartments. The two limit bolts 14 are oppositely arranged and respectively abut against and fix the two ends of the bottom plate 6.
In another technical solution, as shown in fig. 1, the insert rod 8 has an L-shaped rod structure, and after being connected with the upright post 5, the insert hole 9 with an upward opening direction is formed, and the depth of the insert hole 9 is greater than the width of the horizontal connecting rod 10. The horizontal connecting rod 10 can be quickly inserted into the socket 9 downwards to be connected with the vertical rod, so that a guardrail structure is formed without welding.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and drawings shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (7)
1. Steel landing stage assembled design guardrail structure, its characterized in that includes:
the fixing base is arranged on two sides of each steel trestle panel in the width direction along the length direction of the steel trestle, the fixing base is welded and fixed with the steel trestle panels, a notch is formed in one side of the fixing base facing the middle of the bridge deck, the notch extends towards the inside of the fixing base along the L-shaped direction to form a limiting groove, and the limiting groove penetrates through the fixing base upwards to be arranged;
the vertical rod comprises a vertical column, a bottom plate is fixed at the bottom of the vertical column, a supporting rib plate is connected to the lower end of the vertical column, the bottom of the supporting rib plate is fixedly connected with the upper surface of the bottom plate, the top of the supporting rib plate is lower than the top of a notch, the cross section of the notch is matched with the lower end of the vertical rod, so that the lower end of the vertical rod can enter the deepest part of a limit groove from the notch, inserting rods are connected to the upper end of the vertical column at intervals along the vertical direction, inserting holes are formed in the inserting rods, and horizontal connecting rods are jointly inserted into the adjacent inserting holes in the longitudinal bridge;
the lock catch is detachably connected to the fixing base and is abutted to one side, close to the notch, of the upright post, and the lock catch is used for limiting the upright post to the deepest part of the limiting groove.
2. The steel trestle assembly type shaping guardrail structure according to claim 1, wherein a limiting screw hole is formed in the upper surface of the fixing base facing the bottom of the limiting groove, and the lock catch comprises:
the locking plate is horizontally arranged on the upper surface of the fixed base and spans across the two sides of the limiting groove, one side of the locking plate facing the bottom of the limiting groove is abutted against the upright post, the two ends of the locking plate are respectively provided with a locking hole, the locking plate is connected with the fixed base by screwing in a locking bolt between the locking hole and the fixed base, and a limiting screw hole is formed in the position, opposite to the lower side, of the locking plate, of the limiting groove;
and the limiting bolts are respectively screwed into the corresponding positions of the bottom plate, which are arranged in each limiting screw hole in a downward screwing way, and the bottoms of the limiting bolts are abutted to the upper surface of the bottom plate.
3. The steel trestle assembled shaping guardrail structure according to claim 2, characterized in that the lock holes at two ends of the lock plate comprise fixed end holes and movable end holes, the movable end holes are arc-shaped slotted holes penetrating in the width direction of the lock plate, the upper surface of the fixed base is symmetrically provided with fixed holes corresponding to the fixed end holes, the fixed holes and the corresponding fixed end holes are screwed into one locking bolt together, and the fixed holes and the corresponding arc-shaped slotted holes are screwed into one locking bolt together.
4. The steel trestle assembly type shaping guardrail structure according to claim 1, wherein the fixing base is a channel steel or a section steel, a non-sealing surface of the channel steel is welded and fixed with a panel of the steel trestle, the notch on the channel steel is of an inverted T-shaped structure, the length of the lower end of the notch is larger than that of the bottom plate, the width of the inner side of the channel steel is larger than that of the bottom plate, and the limiting groove is formed in a web plate of the channel steel and is larger than the diameter of the upright post.
5. The steel trestle fabricated shaped guardrail structure of claim 1, wherein the bottom plate coincides with the center of the upright, and all of the support ribs are symmetrically disposed along the axis of the upright.
6. The steel trestle assembling type shaping guardrail structure according to claim 2, wherein four supporting rib plates are symmetrically arranged, a compartment is formed between two adjacent supporting rib plates in the horizontal direction, and two limiting bolts are respectively arranged in one of the two opposite compartments.
7. The steel trestle assembling type shaping guardrail structure according to claim 1, characterized in that the inserted link is of an L-shaped rod-shaped structure, the inserted link is connected with the upright post to form the insertion port with an upward opening direction, and the depth of the insertion port is larger than the width of the horizontal connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320976630.7U CN219710063U (en) | 2023-04-26 | 2023-04-26 | Steel trestle assembled shaping guardrail structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320976630.7U CN219710063U (en) | 2023-04-26 | 2023-04-26 | Steel trestle assembled shaping guardrail structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219710063U true CN219710063U (en) | 2023-09-19 |
Family
ID=87981546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320976630.7U Active CN219710063U (en) | 2023-04-26 | 2023-04-26 | Steel trestle assembled shaping guardrail structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219710063U (en) |
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2023
- 2023-04-26 CN CN202320976630.7U patent/CN219710063U/en active Active
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