CN114438937A - Road rail guard that security is strong - Google Patents
Road rail guard that security is strong Download PDFInfo
- Publication number
- CN114438937A CN114438937A CN202210058109.5A CN202210058109A CN114438937A CN 114438937 A CN114438937 A CN 114438937A CN 202210058109 A CN202210058109 A CN 202210058109A CN 114438937 A CN114438937 A CN 114438937A
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- China
- Prior art keywords
- fixedly connected
- movable block
- cylinder
- open slot
- fixing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/14—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact specially adapted for local protection, e.g. for bridge piers, for traffic islands
- E01F15/145—Means for vehicle stopping using impact energy absorbers
- E01F15/146—Means for vehicle stopping using impact energy absorbers fixed arrangements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F15/00—Safety arrangements for slowing, redirecting or stopping errant vehicles, e.g. guard posts or bollards; Arrangements for reducing damage to roadside structures due to vehicular impact
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
- E01F15/04—Continuous barriers extending along roads or between traffic lanes essentially made of longitudinal beams or rigid strips supported above ground at spaced points
- E01F15/0476—Foundations
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses a road guard rail with high safety, and relates to the field of constructional engineering design. The road protective guard with high safety comprises a roadbed, wherein a first gear rod and a second gear rod are fixedly connected to the upper surface of the roadbed, a first movable block is fixedly connected with one end of a spring, a rolling ball is arranged inside a first open slot, a rotating disc is fixedly connected with a stirring block, a third fixed shaft is fixedly connected with one end of a clockwork spring, and the other end of the clockwork spring is fixedly connected with one end of a connecting chain. This road rail guard that security is strong through setting up first promotion piece, rolling ball and first movable block, can make first shelves pole, second shelves pole and roof-rack fast and stable, has improved protective capacities and kinetic energy absorbing capacity, dials movable block, rolling disc, second fixed axle, clockwork spring and connecting link through setting up, consumes impact force through the tightening and loosening of clockwork spring like this, simple structure, when can many times, multiple buffering safeguard measure has improved the security performance.
Description
Technical Field
The invention relates to the technical field of constructional engineering design, in particular to a road guard rail with high safety.
Background
At present, traffic accidents of anti-collision guardrails frequently occur on expressways or traffic roads, the speed of vehicles causing accidents is too high, and the existing rigid guardrails consisting of ocean ash piers or fixed steel pipes and the like cannot effectively absorb collision kinetic energy, so that overturning is caused, and drivers and passengers are seriously injured. If the rigid guardrail can effectively absorb collision kinetic energy and decelerate, the damage of drivers and passengers of traffic accidents that running vehicles collide with the guardrail can be greatly reduced.
The conventional rigid guardrail only depends on friction force to absorb collision kinetic energy in the collision process, the damping time is too short, and due to poor energy absorption and speed reduction effects, the safety of automobiles and personnel in the automobiles is not protected, so that a novel road guardrail with high safety is necessary under the conditions.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the road guard fence with strong safety, and solves the problems of weak protection buffering capacity and poor energy absorption effect of the road guard fence.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a road guard fence with high safety comprises a roadbed, wherein a first guard rod and a second guard rod are fixedly connected to the upper surface of the roadbed, the tops of the first guard rod and the second guard rod are fixedly connected with an upper frame, one side face, close to the second guard rod, of the first guard rod is fixedly connected with one end of a first movable block, the other end of the first movable block is fixedly connected with a first pushing block, the first movable block is fixedly connected with one end of a spring, the other end of the spring is fixedly connected with a fixed cylinder, one section, far away from the first guard rod, of the first movable block is slidably connected with the inner wall of the fixed cylinder, the fixed cylinder is fixedly connected with one end of a first fixed shaft, the other end of the first fixed shaft is fixedly connected with the second guard rod, a first open slot is formed in the first fixed shaft, a rolling ball is arranged in the first open slot, a connecting frame is fixedly connected to the middle portion, far away from the first guard rod, of the second guard rod, the connecting frame is fixedly connected with the second pushing block, the upper surface of the roadbed is fixedly provided with a first fixing frame and a second fixing frame, the upper part of the first fixing frame is fixedly provided with an air cylinder, the second pushing block is slidably connected with one end of the air cylinder, the other end of the air cylinder is slidably connected with a third pushing block, the third pushing block is fixedly connected with one end of a connecting rod, the other end of the connecting rod is provided with a second open slot, the first open slot is opened towards the direction of the first movable block, the second open slot is opened towards the right upper part, the width of the second open slot is larger than that of the shifting block, when the shifting block moves to the bottommost end, the shifting block and the connecting rod are positioned on the same horizontal line, the bottom end of the rotating disc is higher than the upper surface of the connecting rod, the upper part of the second fixing frame is fixedly connected with a bearing, and the bearing is in rotation connection with the second fixing shaft, the spring fixing device comprises a second fixing shaft, a rotating disc, a poking block, a fixing box, a communicating hole, a third fixing shaft and a spring, wherein the second fixing shaft is fixedly connected with the rotating disc, the rotating disc is fixedly connected with the poking block, the fixing box is fixedly mounted on the second fixing frame, the communicating hole is formed in one side, close to the second fixing shaft, of the fixing box, the inside of the fixing box is fixedly connected with the third fixing shaft, the third fixing shaft is fixedly connected with one end of the spring, the other end of the spring is fixedly connected with one end of a connecting chain, the other end of the connecting chain is fixedly connected with the second fixing shaft, and the spring penetrates through the communicating hole and is fixedly connected with the connecting chain.
Furthermore, the first movable block is composed of two cylinders with different diameters, and the diameter of one cylinder close to the first stop lever is larger than that of the cylinder far away from the first stop lever.
Further, the diameter of the first opening groove is smaller than the inner diameter of the fixed cylinder, and the inner diameter of the first opening groove is larger than the diameter of the first pushing block.
Furthermore, an anti-collision pad is arranged at one end, close to the second gear lever, of the first open slot and is fixedly connected with the first fixing shaft.
Furthermore, one end of the cylinder, which is far away from the second stop lever, is fixedly provided with a limiting disc, and the inner diameter of the limiting disc is smaller than that of the cylinder.
Furthermore, first open slot is towards first movable block direction opening, the opening is directly over to the second open slot orientation to the width of second open slot is greater than the width of stirring the piece, works as when stirring the piece and moving to be located same water flat line with the connecting rod when bottommost, the bottom of rolling disc is higher than the upper surface of connecting rod.
(III) advantageous effects
The invention provides a road guard rail with strong safety. The method has the following beneficial effects:
1. this road guardrail that security is strong, through setting up first promotion piece, a spring, a fixed cylinder, first fixed axle, the roll ball, first open slot and first movable block, first shelves pole drives first movable block, first movable block drives the spring and first promotion is fast, the spring is compressed, first promotion piece promotes the roll ball, the roll ball hits to the anticollision pad, later make a round trip to collide, the spring drives a fixed cylinder, a fixed cylinder drives first fixed axle, first fixed axle drives second shelves pole, can offset by a wide margin impact force when the roll ball makes a round trip to roll inside the first open slot, and can make first shelves pole, second shelves pole and roof-rack fast and stable, protective capacities and kinetic energy absorbing capacity have been improved.
2. This road guardrail that security is strong, through setting up the cylinder, the second promotes piece and third and promotes the piece and can promote the second ejector pad when first shelves pole and second shelves pole rock, the second ejector pad promotes the third ejector pad through the air that promotes in the cylinder, this process can consume kinetic energy, cushion, through setting up the stirring piece, the rolling disc, the second fixed axle, clockwork spring and connecting link, it strikes the stirring piece to drive the connecting rod striking when the third promotes the piece, stir the piece and drive the rolling disc and rotate, the rolling disc drives the second fixed axle, the second fixed axle drives connecting link, connecting link drives the clockwork spring, consume the impact force through the tightening and loosening of clockwork spring like this, moreover, the steam generator is simple in structure, in the time of can many times, buffering safeguard measure, the security performance is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a first damping mechanism according to the present invention;
FIG. 3 is a schematic top view of the cylinder cushion mechanism of the present invention;
FIG. 4 is a schematic cross-sectional view of the cylinder cushion of the present invention;
FIG. 5 is a schematic view of a spring cushioning structure of the present invention;
fig. 6 is a schematic sectional structure view of the fixing box of the present invention.
In the figure: 1. a roadbed; 2. a first shift lever; 3. a second shift lever; 4. a top frame; 5. a first movable block; 6. a spring; 7. a fixed cylinder; 8. a first fixed shaft; 9. a first open slot; 10. a first pushing block; 11. a rolling ball; 12. an anti-collision pad; 13. a connecting frame; 14. a second pushing block; 15. a first fixing frame; 16. a cylinder; 17. a third pushing block; 18. a connecting rod; 19. a limiting disc; 20. a second open slot; 21. rotating the disc; 22. a shifting block; 23. a second fixed shaft; 24. a bearing; 25. a second fixing frame; 26. a fixing box; 27. a communicating hole; 28. a clockwork spring; 29. connecting a chain; 30. and a third fixed shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The embodiment of the invention provides a road guard fence with strong safety, as shown in figures 1-6, comprising a roadbed 1, wherein the upper surface of the roadbed 1 is fixedly connected with a first guard bar 2 and a second guard bar 3, the tops of the first guard bar 2 and the second guard bar 3 are fixedly connected with an upper frame 4 at the same time, one side surface of the first guard bar 2 close to the second guard bar 3 is fixedly connected with one end of a first movable block 5, the first movable block 5 is composed of two cylinders with different diameters, the diameter of one cylinder close to the first guard bar 2 is larger than that of the cylinder far away from the first guard bar 2, the other end of the first movable block 5 is fixedly connected with a first pushing block 10, the first movable block 5 is fixedly connected with one end of a spring 6, the other end of the spring 6 is fixedly connected with a fixed cylinder 7, one section of the first movable block 5 far away from the first guard bar 2 is connected with the inner wall of the fixed cylinder 7 in a sliding manner, the fixed cylinder 7 is fixedly connected with one end of a first fixed shaft 8, the other end of the first fixing shaft 8 is fixedly connected with the second gear rod 3, a first opening groove 9 is formed in the first fixing shaft 8, and a rolling ball 11 is arranged in the first opening groove 9.
The second opening groove 20 is opened towards the right upper side, the width of the second opening groove 20 is larger than that of the shifting block 22, when the shifting block 22 moves to the bottommost end, the second opening groove and the connecting rod 18 are positioned on the same horizontal line, the bottom end of the rotating disc 21 is higher than the upper surface of the connecting rod 18, the upper part of the second fixing frame 25 is fixedly connected with a bearing 24, the bearing 24 is in rotary connection with the second fixing shaft 23, the second fixing shaft 23 is fixedly connected with the rotating disc 21, the rotating disc 21 is fixedly connected with the shifting block 22, the second fixing frame 25 is fixedly provided with a fixing box 26, one side of the fixing box 26 close to the second fixing shaft 23 is provided with a communicating hole 27, the inside of the fixing box 26 is fixedly connected with a third fixing shaft 30, the third fixing shaft 30 is fixedly connected with one end of a clockwork spring 28, the other end of the clockwork spring 28 is fixedly connected with one end of a connecting chain 29, the other end of the connecting chain 29 is fixedly connected with the second fixing shaft 23, the spring 28 passes through the communicating hole 27 and is fixedly connected with the chain 29.
The working principle is as follows: when a vehicle is out of control and collides against the first gear rod 2, the first gear rod 2 swings towards the second gear rod 3, the first gear rod 2 drives the first movable block 5, the first movable block 5 drives the spring 6 and the first pushing block 11, the spring 6 is compressed, the first pushing block 10 pushes the rolling ball 11, the rolling ball 11 collides against the anti-collision pad 12, then the anti-collision pad collides back and forth, the spring 6 drives the fixed cylinder 7, the fixed cylinder 7 drives the first fixed shaft 8, the first fixed shaft 8 drives the second gear rod 3, the second gear rod 3 drives the connecting frame 13, the connecting frame 13 drives the second pushing block 14, the second pushing block 14 pushes air in the air cylinder 16 through movement in the air cylinder 16 to further push the third pushing block 17, and the third pushing block 17 drives the connecting rod 18.
The connecting rod 18 collides with the toggle block 22, the toggle block 22 swings through the inside of the second opening groove 20 when rotating, the toggle block 22 drives the rotating disc 21 to rotate, the rotating disc 21 drives the second fixing shaft 23, the second fixing shaft 23 drives the connecting chain 29, the connecting chain 29 drives the clockwork spring 28, and then the clockwork spring 28 automatically restores to the original state.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a road rail guard that security is strong, includes road bed (1), its characterized in that: the upper surface of the roadbed (1) is fixedly connected with a first stop rod (2) and a second stop rod (3), the tops of the first stop rod (2) and the second stop rod (3) are fixedly connected with an upper frame (4), the first stop rod (2) is close to one side surface of the second stop rod (3) and one end of a first movable block (5), the other end of the first movable block (5) is fixedly connected with a first pushing block (10), the first movable block (5) is fixedly connected with one end of a spring (6), the other end of the spring (6) is fixedly connected with a fixed cylinder (7), the first movable block (5) is far away from one section of the first stop rod (2) and the inner wall of the fixed cylinder (7) in a sliding connection mode, the fixed cylinder (7) is fixedly connected with one end of a first fixed shaft (8), the other end of the first fixed shaft (8) is fixedly connected with the second stop rod (3), a first open slot (9) is formed in the first fixed shaft (8), and a rolling ball (11) is arranged in the first open slot (9);
the middle part of one side face, far away from the first stop lever (2), of the second stop lever (3) is fixedly connected with a connecting frame (13), the connecting frame (13) is fixedly connected with a second pushing block (14), a first fixing frame (15) and a second fixing frame (25) are fixedly installed on the upper surface of the roadbed (1), an air cylinder (16) is fixedly installed on the upper portion of the first fixing frame (15), the second pushing block (14) is in sliding connection with one end of the air cylinder (16), the other end of the air cylinder (16) is in sliding connection with a third pushing block (17), the third pushing block (17) is fixedly connected with one end of a connecting rod (18), a second open slot (20) is formed in the other end of the connecting rod (18), and the first open slot (9) is opened towards the direction of the first movable block (5);
the second opening groove (20) is opened towards the right upper side, the width of the second opening groove (20) is larger than the width of the toggle block (22), when the toggle block (22) moves to the bottommost end, the second opening groove and the connecting rod (18) are located on the same horizontal line, the bottom end of the rotating disc (21) is higher than the upper surface of the connecting rod (18), the upper portion of the second fixing frame (25) is fixedly connected with a bearing (24), the bearing (24) is rotatably connected with the second fixing shaft (23), the second fixing shaft (23) is fixedly connected with the rotating disc (21), the rotating disc (21) is fixedly connected with the toggle block (22), the second fixing frame (25) is fixedly provided with a fixing box (26), one side of the fixing box (26) close to the second fixing shaft (23) is provided with a communicating hole (27), and the inside of the fixing box (26) is fixedly connected with a third fixing shaft (30), the third fixed shaft (30) is fixedly connected with one end of a clockwork spring (28), the other end of the clockwork spring (28) is fixedly connected with one end of a connecting chain (29), the other end of the connecting chain (29) is fixedly connected with a second fixed shaft (23), and the clockwork spring (28) penetrates through a communication hole (27) and is fixedly connected with the connecting chain (29).
2. The road guard rail with strong safety as claimed in claim 1, wherein: the first movable block (5) is composed of two cylinders with different diameters, and the diameter of one cylinder close to the first stop lever (2) is larger than that of the cylinder far away from the first stop lever (2).
3. The road guard rail with strong safety as claimed in claim 1, wherein: the diameter of the first opening groove (9) is smaller than the inner diameter of the fixed cylinder (7), and the inner diameter of the first opening groove (9) is larger than the diameter of the first pushing block (10).
4. The road guard rail with strong safety as claimed in claim 1, wherein: one end, close to the second gear lever (3), of the first open slot (9) is provided with an anti-collision pad (12), and the anti-collision pad (12) is fixedly connected with the first fixing shaft (8).
5. The road guard rail with strong safety as claimed in claim 1, wherein: one end, far away from second shelves pole (3), of cylinder (16) is fixedly mounted with spacing dish (19), the internal diameter of spacing dish (19) is less than the internal diameter of cylinder (16).
6. The road guard rail with strong safety as claimed in claim 1, wherein: first open slot (9) are towards first movable block (5) direction opening, second open slot (20) are towards the opening directly over to the width of second open slot (20) is greater than the width of dialling piece (22), works as it is located same water flat line with connecting rod (18) when dialling piece (22) motion to the bottommost, the bottom of rolling disc (21) is higher than the upper surface of connecting rod (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210058109.5A CN114438937B (en) | 2022-01-19 | 2022-01-19 | Road rail guard that security is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210058109.5A CN114438937B (en) | 2022-01-19 | 2022-01-19 | Road rail guard that security is strong |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114438937A true CN114438937A (en) | 2022-05-06 |
| CN114438937B CN114438937B (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210058109.5A Active CN114438937B (en) | 2022-01-19 | 2022-01-19 | Road rail guard that security is strong |
Country Status (1)
| Country | Link |
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| CN (1) | CN114438937B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711610A (en) * | 1992-11-17 | 1995-01-13 | Kiyoshi Watabe | Opposite lane shielding device |
| EP0848111A1 (en) * | 1996-12-12 | 1998-06-17 | Alessandro Franceschini | Guard-rail fitted with elastic structures |
| WO2014094682A1 (en) * | 2012-12-18 | 2014-06-26 | Yue Tiegang | Self electricity-generating roadside lamp that generates electricity using a tension spring and suction force |
| CN208088187U (en) * | 2018-01-22 | 2018-11-13 | 青岛鹏银科技有限公司 | A kind of highway guard rail with height buffer performance |
| CN109868775A (en) * | 2019-04-08 | 2019-06-11 | 吴婷婷 | A kind of traffic safety guard and its application method |
| CN109941388A (en) * | 2019-05-16 | 2019-06-28 | 陈伯渠 | A kind of device using vehicle damping energy as auxiliary power |
| US20190242368A1 (en) * | 2017-01-22 | 2019-08-08 | Shandong University Of Science And Technology | Multi-buffering energy storage device and application thereof |
| CN211596569U (en) * | 2020-01-04 | 2020-09-29 | 陈飞林 | Highway bridge rail guard |
| CN113825303A (en) * | 2021-09-30 | 2021-12-21 | 江西技研新阳电子有限公司 | Double-layer circuit board with buffer structure |
| CN215366815U (en) * | 2021-04-07 | 2021-12-31 | 白新斌 | Anti-collision guardrail for road and bridge |
| CN215482578U (en) * | 2021-07-11 | 2022-01-11 | 明立重工(集团)有限公司 | High-speed guardrail with buffer mechanism |
-
2022
- 2022-01-19 CN CN202210058109.5A patent/CN114438937B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0711610A (en) * | 1992-11-17 | 1995-01-13 | Kiyoshi Watabe | Opposite lane shielding device |
| EP0848111A1 (en) * | 1996-12-12 | 1998-06-17 | Alessandro Franceschini | Guard-rail fitted with elastic structures |
| WO2014094682A1 (en) * | 2012-12-18 | 2014-06-26 | Yue Tiegang | Self electricity-generating roadside lamp that generates electricity using a tension spring and suction force |
| US20190242368A1 (en) * | 2017-01-22 | 2019-08-08 | Shandong University Of Science And Technology | Multi-buffering energy storage device and application thereof |
| CN208088187U (en) * | 2018-01-22 | 2018-11-13 | 青岛鹏银科技有限公司 | A kind of highway guard rail with height buffer performance |
| CN109868775A (en) * | 2019-04-08 | 2019-06-11 | 吴婷婷 | A kind of traffic safety guard and its application method |
| CN109941388A (en) * | 2019-05-16 | 2019-06-28 | 陈伯渠 | A kind of device using vehicle damping energy as auxiliary power |
| CN211596569U (en) * | 2020-01-04 | 2020-09-29 | 陈飞林 | Highway bridge rail guard |
| CN215366815U (en) * | 2021-04-07 | 2021-12-31 | 白新斌 | Anti-collision guardrail for road and bridge |
| CN215482578U (en) * | 2021-07-11 | 2022-01-11 | 明立重工(集团)有限公司 | High-speed guardrail with buffer mechanism |
| CN113825303A (en) * | 2021-09-30 | 2021-12-21 | 江西技研新阳电子有限公司 | Double-layer circuit board with buffer structure |
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| Publication number | Publication date |
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| CN114438937B (en) | 2023-08-04 |
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Effective date of registration: 20230710 Address after: 252500 West of Middle Section of East Ring Road, Guanxian County, Liaocheng, Shandong Province (Qingquan) Applicant after: Shandong Guanxian Hengliang Transportation Facilities Co.,Ltd. Address before: 1118 Shuanglong Avenue, moling street, Jiangning District, Nanjing, Jiangsu 210000 Applicant before: Liu Qingyao |
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