CN112176916A - Road railing - Google Patents
Road railing Download PDFInfo
- Publication number
- CN112176916A CN112176916A CN202011089462.7A CN202011089462A CN112176916A CN 112176916 A CN112176916 A CN 112176916A CN 202011089462 A CN202011089462 A CN 202011089462A CN 112176916 A CN112176916 A CN 112176916A
- Authority
- CN
- China
- Prior art keywords
- installation cavity
- road
- starter
- baffle
- winding wheel
- Prior art date
- 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.)
- Granted
Links
- 239000007858 starting material Substances 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims description 27
- 238000004804 winding Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 9
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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
- E01F15/02—Continuous barriers extending along roads or between traffic lanes
-
- 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
-
- 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
- E01F15/0407—Metal rails
- E01F15/0423—Details of rails
-
- 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
- E01F15/0484—Installing; Repairing; Adjusting
-
- 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
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/529—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users specially adapted for signalling by sound or vibrations, e.g. rumble strips; specially adapted for enforcing reduced speed, e.g. speed bumps
Landscapes
- 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 railing, which structurally comprises a fixed seat, upright posts, cross rods, reinforcing rods and a speed reducing device, wherein the upright posts are 2 and are parallel to each other, the bottoms of the upright posts are fixed on a road through the fixed seat, the cross rods are 2 and are connected between the 2 upright posts, the reinforcing rods are connected between the 2 cross rods, the speed reducing device is installed in the cross rods, the speed reducing device comprises a starter, rubber strips, a magnetic plate and an electromagnet, the side surface of the electromagnet is provided with the magnetic plate, the magnetic plate is connected with the rubber strips, the electromagnet is electrically connected with the starter, the starter is embedded on the road, and the top of the magnetic plate is provided with a push block, and the: through setting up decelerator on the railing, can reach the effect of speed reduction through the friction between rubber strip and the automobile body under the condition that the vehicle is out of control, make the utilization maximize of railing, and can protect the rubber strip through the baffle, avoid the rubber strip wind to shine and age in advance.
Description
Technical Field
The invention relates to the field of municipal roads, in particular to a road rail.
Background
In the municipal road, the road guardrail separates motor vehicles, non-motor vehicles and pedestrian traffic, and longitudinally separates the road on the section, so that the motor vehicles, the non-motor vehicles and the pedestrians can drive in different lanes, the safety of the road traffic is improved, and the traffic order is improved.
However, when the vehicle runs on the road, the vehicle may be out of control, and at this time, the vehicle cannot be decelerated in time, which is likely to cause a serious traffic accident.
Disclosure of Invention
The invention mainly aims to overcome the defects of the prior art and provide a road rail.
The invention is realized by adopting the following technical scheme: the utility model provides a road railing, its structure includes fixing base, pole setting, horizontal pole, anchor strut, decelerator, the pole setting is equipped with 2 and is parallel to each other, the pole setting bottom is fixed on the road through the fixing base, the horizontal pole is equipped with 2 and is connected between 2 pole settings, is connected with the anchor strut between 2 horizontal poles, install decelerator in the horizontal pole, decelerator includes starter, rubber strip, magnetic sheet, electro-magnet, the electro-magnet side is equipped with the magnetic sheet, the magnetic sheet is connected with the rubber strip, the electro-magnet passes through the electricity with the starter and is connected, the starter inlays on the road, the magnetic sheet top is equipped with the ejector pad.
As optimization, be equipped with the installation cavity in the horizontal pole, up opening, lift groove are equipped with in proper order from the bottom to the side of installation cavity, the inside both ends of installation cavity are equipped with the spout respectively, the opening is equipped with the baffle, install in the lift groove baffle top, be equipped with transmission structure in the installation cavity, transmission structure is connected with the baffle.
Preferably, two ends of the magnetic plate are respectively in sliding connection with the sliding grooves, and the electromagnet is fixed in the installation cavity.
Preferably, the transmission structure comprises a pull rope, a winding wheel, an expansion bracket, a stop lever and a pushing member, the winding wheel is installed in the installation cavity and arranged above the magnetic plate, the pull rope is wound on the winding wheel, the pull rope is connected with the top of the baffle, the stop lever perpendicular to the winding wheel is arranged on the winding wheel, the expansion bracket is connected in the installation cavity and surrounds the stop lever, and the pushing member is installed in the installation cavity and arranged on the side face of the expansion bracket.
Preferably, the pushing part comprises an arc-shaped rod, a hinge, a limiting block and a vertical rod, the vertical rod is connected to the bottom of the arc-shaped rod, the joint of the arc-shaped rod and the vertical rod is installed in the installation cavity through the hinge, the limiting block is arranged on the side face of the vertical rod and connected in the installation cavity, and the vertical rod is arranged on the side face of the electromagnet.
Preferably, the electromagnet is connected with the movable contact piece and the static contact piece through lead wires.
Preferably, the starter comprises a protruding block, a shell and sponge, wherein the protruding block is arranged in the shell, and the bottom of the protruding block is connected with the bottom of the shell through 2 sponges.
Preferably, the movable contact piece and the static contact piece are arranged at the bottom in the shell.
Preferably, the opposite surfaces of the magnetic plate and the electromagnet are homopolar.
Preferably, the bottom of the protruding block is made of a conductive material.
Preferably, the starter is arranged in front of the upright stanchion, and the horizontal distance between the starter and the upright stanchion is 5-10 cm.
Preferably, the sponge is slow rebound memory cotton.
Advantageous effects
Under the condition that the vehicle is out of control, the vehicle is close to the railing, so that the wheel presses the starter, the protrusion block descends to be in contact with the movable contact piece and the static contact piece, the electromagnet is electrified to generate a magnetic field repulsive to the magnetic plate, the magnetic plate moves outwards, the pushing block moves outwards to drive the top of the arc-shaped rod to push the telescopic frame inwards to contract, the telescopic frame pushes the stop lever to rotate anticlockwise, the winding wheel is driven to wind the pull rope, the pull rope pulls the stop plate to move upwards to open the opening, the rubber strip is driven to move out of the opening smoothly, and the speed is reduced through contact friction between the side face of the vehicle body and the rubber strip.
Compared with the prior art, the invention has the beneficial effects that: through setting up decelerator on the railing, can reach the effect of speed reduction through the friction between rubber strip and the automobile body under the condition that the vehicle is out of control, make the utilization maximize of railing, and can protect the rubber strip through the baffle, avoid the rubber strip wind to shine and age in advance.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic view of a structure of a road rail according to the present invention.
Fig. 2 is a side view of the internal structure of the cross bar of the present invention.
FIG. 3 is a schematic view of the structure of the pusher of the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 2.
Fig. 5 is a schematic structural diagram of the starter of the present invention.
In the figure: the device comprises a fixed seat 1, an upright rod 2, a cross rod 3, a reinforcing rod 4, a speed reducer 5, a starter 50, a rubber strip 51, a magnetic plate 52, a push block 520, an electromagnet 53, a mounting cavity 30, an opening 31, a lifting groove 32, a sliding groove 33, a baffle 34, a transmission structure 35, a pull rope 350, a winding wheel 351, a telescopic frame 352, a stop rod 353, a pushing piece 354, an arc-shaped rod 3540, a hinge 3541, a limiting block 3542, a vertical rod 3543, a lead wire 530, a movable contact 531, a static contact 532, a protruding block 501, a shell 502 and sponge 503.
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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides a road rail, which comprises: the structure of the device comprises a fixing seat 1, upright rods 2, cross rods 3, reinforcing rods 4 and a speed reducer 5, wherein the upright rods 2 are arranged in 2 numbers and are parallel to each other, the bottom of the upright rods 2 is fixed on a road through the fixing seat 1, the cross rods 3 are arranged in 2 numbers and are connected among the 2 upright rods 2, the reinforcing rods 4 are connected among the 2 cross rods 3, the speed reducer 5 is installed in the cross rods 3, the speed reducer 5 comprises a starter 50, a rubber strip 51, a magnetic plate 52 and an electromagnet 53, the side surface of the electromagnet 53 is provided with the magnetic plate 52, the magnetic plate 52 is connected with the rubber strip 51, the electromagnet 53 is electrically connected with the starter 50, the starter 50 is embedded on the road, the top of the magnetic plate 52 is provided with a push block 520, a mounting cavity 30 is arranged in the cross rods 3, the side surface of the mounting cavity 30 is sequentially provided with an opening 31 and a lifting groove 32 from bottom, the opening 31 is provided with a baffle 34, the top of the baffle 34 is installed in the lifting groove 32, a transmission structure 35 is arranged in the installation cavity 30, the transmission structure 35 is connected with the baffle 34, two ends of the magnetic plate 52 are respectively connected with the sliding groove 33 in a sliding manner, the electromagnet 53 is fixed in the installation cavity 30, the transmission structure 35 comprises a pull rope 350, a winding wheel 351, an expansion bracket 352, a stop lever 353 and an urging member 354, the winding wheel 351 is installed in the installation cavity 30 and arranged above the magnetic plate 52, the pull rope 350 is wound on the winding wheel 351, the pull rope 350 is connected with the top of the baffle 34, the winding wheel 351 is provided with the stop lever 353 perpendicular to the winding wheel, the expansion bracket 352 is connected in the installation cavity 30 and surrounds the stop lever 353, the urging member 354 is installed in the installation cavity 30 and arranged on the side face of the expansion bracket 352, and the urging member 354 comprises an arc-shaped rod 3540, a hinge 3541, A vertical rod 3543, a vertical rod 3543 is connected to the bottom of the arc rod 3540, the joint of the arc rod 3540 and the vertical rod 3543 is installed in the installation cavity 30 through a hinge 3541, a limit block 3542 is arranged on the side of the vertical rod 3543 and connected in the installation cavity 30, the vertical rod 3543 is arranged on the side of an electromagnet 53, the electromagnet 53 is connected with a movable contact 531 and a static contact 532 through a lead wire 530, the starter 50 comprises a convex block 501, a shell 502 and a sponge 503, a convex block 501 is arranged in the shell 502, the bottom of the convex block 501 is connected with the bottom of the shell 502 through 2 sponges 503, the movable contact 531 and the static contact 532 are arranged at the bottom of the shell 502, the opposite surfaces of the magnetic plate 52 and the electromagnet 53 are homopolar, the bottom of the convex block 501 is made of a conductive material, the starter 50 is arranged in front of the vertical rod 2, the horizontal distance between the two is 5-10cm, when the vehicle does not need to run a little, the sponge 503 is slow rebound memory cotton, so that the convex block 501 can automatically rise within a period of time after being pressed, and the electrifying time of the electromagnet 53 can be prolonged conveniently.
The working principle is as follows: under the condition that the vehicle out of control appears, make the vehicle press close to the railing, thereby make the wheel push down starter 50, make protruding piece 501 descend and movable contact 531, the contact of static contact 532, thereby make electro-magnet 53 circular telegram produce with the magnetic field that magnetic sheet 52 repels, make magnetic sheet 52 outwards remove, ejector pad 520 outwards removes simultaneously and drives arc 3540 top and inwards promote the expansion bracket 352 shrink, make expansion bracket 352 promote pin 353 anticlockwise rotation, thereby drive wind-up wheel 351 and carry out the rolling to stay cord 350, thereby make stay cord 350 pulling baffle 34 rebound open opening 31, it shifts out opening 31 smoothly to drive rubber strip 51, through the contact friction of automobile body side and rubber strip 51 speed reduction, when the railing is located the road in the middle, also can install decelerator 5 simultaneously in the both sides of horizontal pole 3, thereby make both sides all have the function of speed reduction.
Compared with the prior art, the invention has the technical progress that: through setting up decelerator on the railing, can reach the effect of speed reduction through the friction between rubber strip and the automobile body under the condition that the vehicle is out of control, make the utilization maximize of railing, and can protect the rubber strip through the baffle, avoid the rubber strip wind to shine and age in advance.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a road railing, its structure includes fixing base (1), pole setting (2), horizontal pole (3), anchor strut (4), decelerator (5), pole setting (2) are equipped with 2 and are parallel to each other, pole setting (2) bottom is fixed on the road through fixing base (1), horizontal pole (3) are equipped with 2 and connect between 2 pole setting (2), are connected with anchor strut (4) between 2 horizontal pole (3), install decelerator (5), its characterized in that in horizontal pole (3):
decelerator (5) are including starter (50), rubber strip (51), magnetic sheet (52), electro-magnet (53) side is equipped with magnetic sheet (52), magnetic sheet (52) are connected with rubber strip (51), electro-magnet (53) are through being connected with starter (50) electricity, starter (50) inlays on the road, magnetic sheet (52) top is equipped with ejector pad (520).
2. A road rail as claimed in claim 1, wherein: be equipped with installation cavity (30) in horizontal pole (3), installation cavity (30) side is from up being equipped with opening (31), lift groove (32) down in proper order, installation cavity (30) inside both ends are equipped with spout (33) respectively, opening (31) are equipped with baffle (34), install in lift groove (32) baffle (34) top, be equipped with transmission structure (35) in installation cavity (30), transmission structure (35) are connected with baffle (34).
3. A road rail as claimed in claim 1, wherein: the two ends of the magnetic plate (52) are respectively in sliding connection with the sliding grooves (33), and the electromagnets (53) are fixed in the installation cavity (30).
4. A road rail as claimed in claim 2, wherein: the transmission structure (35) comprises a pull rope (350), a winding wheel (351), an expansion bracket (352), a stop lever (353) and a pushing piece (354), the winding wheel (351) is installed in the installation cavity (30) and arranged above the magnetic plate (52), the pull rope (350) is wound on the winding wheel (351), the pull rope (350) is connected with the top of the baffle (34), the stop lever (353) perpendicular to the winding wheel (351) is arranged on the winding wheel (351), the expansion bracket (352) is connected in the installation cavity (30) and surrounds the stop lever (353), and the pushing piece (354) is installed in the installation cavity (30) and arranged on the side face of the expansion bracket (352).
5. A road rail as claimed in claim 4, wherein: the pushing piece (354) comprises an arc-shaped rod (3540), a hinge (3541), a limiting block (3542) and a vertical rod (3543), the bottom of the arc-shaped rod (3540) is connected with the vertical rod (3543), the connecting part of the arc-shaped rod (3540) and the vertical rod (3543) is installed in the installation cavity (30) through the hinge (3541), the limiting block (3542) is arranged on the side face of the vertical rod (3543) and connected in the installation cavity (30), and the vertical rod (3543) is arranged on the side face of the electromagnet (53).
6. A road rail as claimed in claim 1, wherein: the electromagnet (53) is connected with the movable contact piece (531) and the static contact piece (532) through a lead wire (530).
7. A road rail as claimed in claim 1, wherein: the starter (50) comprises a protruding block (501), a shell (502) and sponge (503), wherein the protruding block (501) is arranged in the shell (502), and the bottom of the protruding block (501) is connected with the bottom of the shell (502) through 2 pieces of sponge (503).
8. A road rail as claimed in claim 6, wherein: the movable contact piece (531) and the static contact piece (532) are arranged at the bottom in the shell (502).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089462.7A CN112176916B (en) | 2020-10-13 | 2020-10-13 | Road railing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089462.7A CN112176916B (en) | 2020-10-13 | 2020-10-13 | Road railing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112176916A true CN112176916A (en) | 2021-01-05 |
| CN112176916B CN112176916B (en) | 2021-12-17 |
Family
ID=73949473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011089462.7A Active CN112176916B (en) | 2020-10-13 | 2020-10-13 | Road railing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112176916B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20106249U1 (en) * | 2001-04-10 | 2001-07-26 | Geo Do Industry Co., Ltd., Busan | Impact absorber for a street |
| CN104846760A (en) * | 2015-03-26 | 2015-08-19 | 刘瑞 | Buffering pipe for road guardrail |
| CN205296007U (en) * | 2015-10-28 | 2016-06-08 | 新昌县东宇科研开发有限公司 | A dangerous ware is kept away to road for retarding braking vehicle |
| CN107190672A (en) * | 2017-05-04 | 2017-09-22 | 江苏理工学院 | A kind of magnetic cushion Intelligent road isolation strip |
| CN207331455U (en) * | 2017-10-02 | 2018-05-08 | 吴碧中 | A kind of road and bridge anticollision barrier |
-
2020
- 2020-10-13 CN CN202011089462.7A patent/CN112176916B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20106249U1 (en) * | 2001-04-10 | 2001-07-26 | Geo Do Industry Co., Ltd., Busan | Impact absorber for a street |
| CN104846760A (en) * | 2015-03-26 | 2015-08-19 | 刘瑞 | Buffering pipe for road guardrail |
| CN205296007U (en) * | 2015-10-28 | 2016-06-08 | 新昌县东宇科研开发有限公司 | A dangerous ware is kept away to road for retarding braking vehicle |
| CN107190672A (en) * | 2017-05-04 | 2017-09-22 | 江苏理工学院 | A kind of magnetic cushion Intelligent road isolation strip |
| CN207331455U (en) * | 2017-10-02 | 2018-05-08 | 吴碧中 | A kind of road and bridge anticollision barrier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112176916B (en) | 2021-12-17 |
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Effective date of registration: 20211201 Address after: 362000 jq692, second floor, entrepreneurship Park, Qianyuan village, Luoyang Town, Taiwan investment zone, Quanzhou City, Fujian Province Applicant after: Quanzhou quanyue Machinery Technology Co.,Ltd. Address before: 101100 building 2-10, Beijing Datang hi tech Pioneer Park, 155 Beiyuan, Tongzhou District, Beijing Applicant before: Hu Linhua |
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Effective date of registration: 20240410 Address after: 425000, 500 Lingling Road, Lengshuitan District, Yongzhou City, Hunan Province Patentee after: Du Qiang Country or region after: China Address before: 362000 jq692, second floor, entrepreneurship Park, Qianyuan village, Luoyang Town, Taiwan investment zone, Quanzhou City, Fujian Province Patentee before: Quanzhou quanyue Machinery Technology Co.,Ltd. Country or region before: China |
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Effective date of registration: 20240510 Address after: Room 1106, building nh1, Rongke dongnanhai community, 469 Xiangzhang Road, Yuhua District, Changsha, Hunan 410000 Patentee after: Hunan Ruichang Bridge Co.,Ltd. Country or region after: China Address before: 425000, 500 Lingling Road, Lengshuitan District, Yongzhou City, Hunan Province Patentee before: Du Qiang Country or region before: China |