CN113216049A - Sidewalk guardrail with linear induction function - Google Patents
Sidewalk guardrail with linear induction function Download PDFInfo
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- CN113216049A CN113216049A CN202110582584.8A CN202110582584A CN113216049A CN 113216049 A CN113216049 A CN 113216049A CN 202110582584 A CN202110582584 A CN 202110582584A CN 113216049 A CN113216049 A CN 113216049A
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- rod
- folding
- rods
- linear induction
- guardrail
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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
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Abstract
The invention discloses a sidewalk guardrail with a linear induction function, which comprises: the guardrail frame comprises a cross rod and at least two upright rods, the upright rods are vertically arranged at intervals, and the cross rod is transversely connected with all the upright rods; the induction rod group comprises a plurality of folding rods which extend up and down and are vertically shaped; the upper ends of the folding rods are connected with the cross rod, and all the folding rods are parallel to each other and are arranged along the length direction of the cross rod. The sidewalk guardrail with the linear induction function has the linear induction function and the function of protecting pedestrians, and solves the problem that the linear induction mark arranged on a small-section road affects pedestrians and non-motor vehicles.
Description
Technical Field
The invention relates to the technical field of road traffic marking facilities, in particular to a sidewalk guardrail with a linear induction function.
Background
The linear guide board is a road traffic sign arranged at the places of accidents, the outer side of a small-radius ramp curve, a T-shaped intersection with poor sight line and the like, and is used for prompting drivers to pay attention to the linear change of the road in front and to cautious driving.
The main icon shape of the linear induction mark is in a "<" shape, and the linear induction mark can be used alone or a plurality of linear induction marks can be arranged and combined for use. In terms of installation and fixation, the target is generally vertically arranged at the end part of a central isolation facility beside a road, in a green belt, beside a ditch, at the bridge head and the like by adopting a single rod.
However, the linear induction target needs to be perpendicular to the sight line of the driver as much as possible, so that the height from the lower edge of the linear induction target to the ground is 120cm to 200cm and is positioned at a position which can be reached by the height of a human body; the width of the linear induction target plate is wide, even the width of the linear induction target plate which is used independently can reach 220mm to 600mm, and in order to ensure that a driver can notice, more than 3 induction targets need to be seen continuously in the curve range.
If a plurality of linear induction mark plates are arranged on the side of the road, the linear induction mark plates can extend into the sidewalks and the non-motor vehicle lanes, so that the range in which pedestrians and non-motor vehicles can walk is narrowed, and when electric vehicles, motorcycles and the like can not avoid the vehicles at a high speed in time, the linear induction mark plates can collide with the linear induction mark plates, so that casualties are caused, and the urban road is very dangerous. In addition, although the road row pole facilities and the like are advocated to integrate the poles into one as many as possible, the linear induction standard plates are too low in height and have requirements on the number distance and the like, so that the linear induction standard plates are difficult to integrate into one pole with other traffic facility row poles, the number of the traffic poles is large, and the investment cost and the installation and maintenance cost are increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a sidewalk guardrail with a linear induction function, which has the functions of linear induction and pedestrian protection and solves the problem that a small-section road is provided with a linear induction mark to influence pedestrians and non-motor vehicles.
The purpose of the invention is realized by adopting the following technical scheme:
a sidewalk guardrail with a linear induction function, comprising:
the guardrail frame comprises a cross rod and at least two upright rods, the upright rods are vertically arranged at intervals, and the cross rod is transversely connected with all the upright rods;
the induction rod group comprises a plurality of folding rods which extend up and down and are vertically shaped; the upper ends of the folding rods are connected with the cross rod, and all the folding rods are parallel to each other and are arranged along the length direction of the cross rod.
Furthermore, the folding rod comprises an upper folding rod and a lower folding rod which are hinged with each other, and the angle formed by the upper folding rod and the lower folding rod is changeable.
Further, the angle between the upper folding rod and the lower folding rod ranges from 90 degrees to 130 degrees.
Furthermore, the induction rod group also comprises first connecting rods matched with the folding rods one by one, the upper ends of the first connecting rods are connected with the cross rods, and the lower ends of the first connecting rods are hinged with the upper ends of the folding rods; a plurality of connecting positions are arranged between the first connecting rod and the cross rod, and when the first connecting rod and the cross rod are positioned at different connecting positions, the angles formed by the upward folding rod and the downward folding rod are different.
Furthermore, the cross rod is provided with a sleeve, the first connecting rod is inserted into the sleeve, and the connecting positions are different inserting positions between the first connecting rod and the sleeve.
Furthermore, a plurality of first connecting holes with different heights are formed in the sleeve, and a second connecting hole is formed in the first connecting rod; when the first connecting rod and the sleeve are located at different splicing positions, the second connecting hole is aligned with different first connecting holes; the screw is detachably inserted into the first connecting hole and the second connecting hole to fixedly connect the sleeve and the first connecting rod.
Further, the cross bar comprises an upper cross bar and a lower cross bar which are parallel to each other, and the inducing assembly is arranged between the upper cross bar and the lower cross bar; the upper end and the lower end of the induction assembly are respectively connected with the upper cross rod and the lower cross rod.
Furthermore, the sleeve is arranged on the upper cross rod, the upper end of the first connecting rod is connected with the upper cross rod, and the lower end of the first connecting rod is hinged with the upper folding rod.
Further, still include with the second connecting rod of folding rod one-to-one matching, the upper end of second connecting rod with the folding rod is articulated down, the lower extreme with the sheer pole is articulated. (hinge type may or may not)
Furthermore, the front surface of the folding rod is a light reflecting surface.
According to the sidewalk guardrail with the linear induction function, the sidewalk guardrail and the induction rod set are combined, and the guardrail frame is used for being fixed on the ground and the like, so that the installation position is provided for the induction rod set. When a plurality of folding rods are parallel to each other and are arranged along the length direction of the cross rod, the folding rods can be used as a guardrail of a common pedestrian crossing to separate motor vehicles and pedestrians, and can form a linear induction mark to play a role in prompting the linear change of a road in front of a driver and paying attention to careful driving, so that the function of a sidewalk rail is enriched.
The inventor jumps out of the thinking way that the inherent road guide sign is necessarily arranged on a single rod, and combines the linear guide sign with the common sidewalk guardrail beside the road, thereby fully utilizing the characteristics of more additional installation positions and generally lower height of the sidewalk guardrail, and ensuring that the linear guide sign does not extend out to occupy the space of the sidewalk and the non-motor vehicle lane even if the linear guide sign is arranged on the small-section urban road. And the linear induction mark with the height is closer to the sight height of the driver, thereby better playing a role in prompting. In addition, during installation construction, the installation of the sidewalk railing and the linear induction mark can be met equivalently by one-time installation, the municipal purchase and installation maintenance cost is reduced, and the linear induction mark is suitable for being popularized in a large range at the road position where the linear induction mark needs to be arranged.
Drawings
Fig. 1 is a schematic front view of a sidewalk guardrail with a linear induction function according to the invention;
FIG. 2 is a schematic front view of a sleeve according to the present embodiment;
FIG. 3 is a schematic view of the sleeve and the first connecting rod in this embodiment when they are connected to each other;
FIG. 4 is a schematic view of the lower rail and foot rest of the present embodiment installed in a concrete floor;
in the figure, 1-handrail frame, 11-cross bar, 111-sleeve, 111 a-first connecting hole, 112-upper cross bar, 113-lower cross bar, 12-vertical bar, 2-induction bar group, 21-folding bar, 211-upper folding bar, 212-lower folding bar, 22-first connecting bar, 23-second connecting bar, 3-foot seat, 4-screw and alpha-angle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Fig. 1 to 4 show a sidewalk guardrail with a linear induction function according to the present invention, which comprises a balustrade frame 1 and an induction rod set 2, the sidewalk guardrail and the induction rod set 2 are combined,
the handrail frame 1 comprises a cross rod 11 and at least two upright posts 12, the upright posts 12 are vertically arranged at intervals, and the cross rod 11 is transversely connected with all the upright posts 12; the lower ends of the upright rods 12 are connected with a ground roadbed and the like to provide mounting positions for the induction rod groups 2;
the induction rod group 2 comprises a plurality of folding rods 21 which extend up and down and are vertically shaped like a < ">, so that the shape in the linear induction mark is formed; the upper end of dog-ear 21 with horizontal pole 11 is connected, all dog-ear 21 is parallel to each other and follows the length direction of horizontal pole 11 arranges, forms comparatively compact railing structure, and this kind of structure both can regard as ordinary pedestrian's crosswalk guardrail to separate motor vehicle and pedestrian, can constitute linear induction mark again, plays the linear change of suggestion driver place ahead road, need pay attention to the effect of prudent driving, has richened the effect of pavement railing. The shape of the cross bar 11 on the horizontal plane changes along with the change of the road shape, and the length is set according to the specific requirement, which is not limited herein.
In this embodiment, the inventor jumps out of the thinking that the inherent road guide sign must be set on a single rod, and combines the linear guide sign with the common sidewalk guardrail beside the road, thereby making full use of the characteristics of more positions for installing the sidewalk guardrail and lower height, and preventing the linear guide sign from extending out to occupy the space of the sidewalk and the non-motor vehicle lane even if the linear guide sign is set on the urban road with small section. And the linear induction mark with the height is closer to the sight height of the driver, thereby better playing a role in prompting. In addition, during installation construction, the installation of the sidewalk railing and the linear induction mark can be met equivalently by one-time installation, the municipal purchase and installation maintenance cost is reduced, and the linear induction mark is suitable for being popularized in a large range at the road position where the linear induction mark needs to be arranged.
As a further preferable scheme of the folding rod 21, the folding rod 21 includes an upper folding rod 211 and a lower folding rod 212 hinged to each other, an angle α formed by the upper folding rod 211 and the lower folding rod 212 is variable, and in actual use, angles α with different sizes can represent different risk coefficients, for example, the larger the risk coefficient is, the smaller the angle α is, or the closer the angle α is to a curve, the smaller the angle α is, not only can a driver be more intuitively guided, but also the defect that each linear induction mark in the prior art is difficult to change once manufactured is solved, and different road conditions can be adapted to one set of structure, and the adaptability is stronger.
According to national regulations and road experience, in the embodiment, the variation range of the angle α formed by the upper folding rod 211 and the lower folding rod 212 is preferably 90 ° to 130 °, and particularly preferably 100 ° to 130 °, when the angle α is too large and is close to a straight line, the angle α is difficult to identify as a linear induction mark, and a guiding effect cannot be achieved; however, if the effect is too small, the driver can easily misunderstand the turning angle alpha and is not beneficial to driving, and the range of 100 degrees and 130 degrees can enable the sidewalk guardrail with the linear induction function to achieve the relatively best guiding effect by comprehensive consideration.
In the scheme of how to change the angle α of the folding rod 21, the preferred scheme provided by this embodiment is that the induction rod group 2 further includes first connecting rods 22 matched with the folding rods 21 one by one, the upper ends of the first connecting rods 22 are connected with the cross rod 11, and the lower ends are hinged to the upper ends of the folding rods 21; a plurality of connecting positions are arranged between the first connecting rod 22 and the cross rod 11, and when the first connecting rod 22 and the cross rod 11 are positioned at different connecting positions, the angles α formed by the upward folding rod 211 and the downward folding rod 212 are different. When the connection position between the first connecting rod 22 and the cross rod 11 moves upward or leftward, the upper end of the lower upward folding rod 211 is driven to move along with the connection position, and the upward folding rod 211 and the downward folding rod 212 are hinged, so that the angle α between the upward folding rod 211 and the downward folding rod 212 is increased; on the contrary, if the connection position between the first connecting rod 22 and the cross rod 11 moves downward or rightward, the upper folding rod 211 is moved accordingly, so that the angle α between the upper folding rod 211 and the lower folding rod 212 becomes smaller.
Wherein, can be connected in order to realize the change of position through the guide rail structure between head rod 22 and the horizontal pole 11, the guide rail structure can obtain more convenient smooth removal experience, but the cost is higher, therefore this embodiment still provides an optimal implementation mode, be in promptly be equipped with sleeve 111 on the horizontal pole 11, head rod 22 insert establish connect in sleeve 111, the connection position be head rod 22 with different grafting position between the sleeve 111. This structure is equivalent to providing connection positions with different heights, and the angle α of the folding rod 21 can be changed by changing the inserted height of the first connecting rod 22. Compared with a guide rail structure, the guide rail structure has the advantages of simpler manufacture and installation, lower cost and better installation effect.
In order that the position of the sleeve 111 is not changed at will after the moving, a plurality of first connection holes 111a with different heights are formed on the sleeve 111, and a second connection hole (not shown in the figure) is formed on the first connection rod 22; when the first connecting rod 22 and the sleeve 111 are at different plugging positions, the second connecting hole is aligned with different first connecting holes 111 a; a screw 4 is further provided, and the screw 4 is detachably inserted into the first connecting hole 111a and the second connecting hole to fixedly connect the sleeve 111 and the first connecting rod 22. During initial installation, the first connecting hole 111a is properly selected to be connected with the second connecting hole according to the current installation road section, and then the first connecting hole and the second connecting hole are fixedly connected by the screw 4, preferably, the nut is additionally arranged to fix the first connecting hole and the second connecting hole, so that the phenomenon of loosening caused by the influence of natural environment in the using process is avoided. The structure is simple to adjust, firm in fixation and very convenient.
The lower end of the inducing assembly in the above embodiments may be directly connected to the road surface, but in order to reduce the number of holes drilled on site and ensure the overall stability of the structure, it is preferable that the cross bar 11 includes an upper cross bar 112 and a lower cross bar 113 which are parallel to each other, and the inducing assembly is disposed between the upper cross bar 112 and the lower cross bar 113; the upper end and the lower end of the inducing assembly are respectively connected with the upper cross bar 112 and the lower cross bar 113. The upper crosspiece 112, the lower crosspiece 113 and the uprights 12 connected to them constitute a solid frame in which the inducing assembly is well fixed. And the lower end of the induction component can be connected on the lower cross bar 113, so that the installation is quicker without punching on the ground on site during the on-site installation.
Because the upper cross bar 112 is higher in position, water accumulation and other phenomena are not easy to occur, the upper cross bar 112 above the upper cross bar can also play a certain role in shielding the sun and rainwater, in this embodiment, preferably, the sleeve 111 is arranged on the upper cross bar 112, the upper end of the first connecting rod 22 is connected with the upper cross bar 112, and the lower end of the first connecting rod is hinged to the upper folding rod 211. When the insertion depth of the first connecting rod 22 in the sleeve 111 changes, the first connecting rod 22, the upward folding rod 211 and the downward folding rod 212 are driven to rotate at their hinge positions, so as to change the angle α between the upward folding rod 211 and the downward folding rod 212.
More preferably, the folding device further comprises second connecting rods 23 matched with the folding rods 21 one by one, wherein the upper ends of the second connecting rods 23 are hinged to the lower folding rods 212, and the lower ends of the second connecting rods 23 are hinged to the lower cross rod 113. The addition of the second connecting rod 23 can form a vertically symmetrical effect with the first connecting rod 22, and structurally, the lower folding rod 212 can rotate more conveniently to change the angle α between the lower folding rod and the upper folding rod 211; has symmetrical beauty in visual effect, and is more beneficial to improving the appearance and appearance of the city. More importantly, the second connecting rod 23 can raise the height of the folding rod 21 integrally, so as to meet the height requirement of the law and regulation on the linear induction mark.
In order to make the linear induction mark more obvious, the front surface of the folding rod 21 is a reflective surface, preferably an iv-type reflective film with alternate blue and white, so that the night warning effect is improved, a driver can more easily notice that the folding rod 21 is partially the linear induction mark, and misunderstanding is reduced.
Because the handrail frame 1 in this embodiment needs to bear the fixed action of the induction component, the preferred intensity of pole setting 12 and horizontal pole 11 is 1.5 times to 2.5 times of folding rod 21, head rod 22 and second connecting rod 23 in this embodiment, chooseing galvanized round tube or square steel pipe for use on the material, the surface is galvanized rust-resistant to handle to promote rust-resistant function, reduce the maintenance management and maintenance cost of guardrail, simultaneously, can be according to different application scenes, brush different color coatings, promote the whole quality of road, build "one scene all the way".
In addition to the above structure, in order to firmly fix the whole sidewalk guardrail with the linear induction function on the ground, the lower cross bar 113 is preferably a thick steel plate, a plurality of inverted "U" -shaped foot seats 3 are connected below the thick steel plate, the top ends of the foot seats 3 are connected with the bottom end of the lower cross bar 113, and two lower support legs extend towards the ground. During construction, the foot seats 3 are poured with concrete, and the lower cross bars 113 are placed on the ground and connected with the vertical rods 12 and the like.
The connecting positions of the vertical rod 12, the cross rod 11, the first connecting rod 22, the second connecting rod 23 and the like in the embodiment are all connected by full welding except for hinged connection, so that the overall structural strength is improved. All welding spots are ensured to be flat and fully welded, the welding seams have no defects of air holes, slag inclusion, incomplete penetration and the like, the welding openings are polished to be flat, the surfaces have no cracks, the forming is uniform and smooth, the paint film is smooth and has no sagging or bubbling phenomenon, and the integral forming is carried out with rust removal and hot galvanizing corrosion prevention treatment.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a take linear induced function's pavement guardrail which characterized in that includes:
the guardrail frame comprises a cross rod and at least two upright rods, the upright rods are vertically arranged at intervals, and the cross rod is transversely connected with all the upright rods;
the induction rod group comprises a plurality of folding rods which extend up and down and are vertically shaped; the upper ends of the folding rods are connected with the cross rod, and all the folding rods are parallel to each other and are arranged along the length direction of the cross rod.
2. A pavement guardrail with linear induction function as claimed in claim 1, wherein the folding bars comprise an upper folding bar and a lower folding bar hinged with each other, and the angle between the upper folding bar and the lower folding bar is variable.
3. A pavement guardrail with linear induction function as claimed in claim 2, wherein the angle of the upper folding bar and the lower folding bar is varied from 90 ° to 130 °.
4. A sidewalk guardrail with linear induction function as claimed in claim 2, wherein the induction rod set further comprises first connecting rods matched with the folding rods one by one, the upper ends of the first connecting rods are connected with the cross rods, and the lower ends of the first connecting rods are hinged with the upper ends of the folding rods; a plurality of connecting positions are arranged between the first connecting rod and the cross rod, and when the first connecting rod and the cross rod are positioned at different connecting positions, the angles formed by the upward folding rod and the downward folding rod are different.
5. A sidewalk guardrail with linear induction function as claimed in claim 4, wherein the cross bar is provided with a sleeve, the first connecting rod is inserted and connected in the sleeve, and the connecting positions are different insertion positions between the first connecting rod and the sleeve.
6. A sidewalk guardrail with linear induction function as claimed in claim 5, wherein the sleeve is provided with a plurality of first connecting holes with different heights, and the first connecting rod is provided with a second connecting hole; when the first connecting rod and the sleeve are located at different splicing positions, the second connecting hole is aligned with different first connecting holes; the screw is detachably inserted into the first connecting hole and the second connecting hole to fixedly connect the sleeve and the first connecting rod.
7. A sidewalk guardrail with linear induction function according to claim 5 or 6, wherein the cross bar comprises an upper cross bar and a lower cross bar which are parallel to each other, and the induction component is arranged between the upper cross bar and the lower cross bar; the upper end and the lower end of the induction assembly are respectively connected with the upper cross rod and the lower cross rod.
8. A sidewalk guardrail with linear induction function as claimed in claim 7, wherein the sleeve is provided on the upper rail, and the first connecting rod is connected to the upper rail at an upper end thereof and hinged to the upper folding rod at a lower end thereof.
9. The sidewalk guardrail with linear induction function of claim 8, further comprising a second connecting rod matched with the folding rods one by one, wherein the upper end of the second connecting rod is hinged with the lower folding rod, and the lower end of the second connecting rod is hinged with the lower cross rod.
10. A pavement guardrail with linear induction function as claimed in claim 1, wherein the front surface of the folding bar is a light reflecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110582584.8A CN113216049B (en) | 2021-05-26 | 2021-05-26 | Sidewalk guardrail with linear induction function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110582584.8A CN113216049B (en) | 2021-05-26 | 2021-05-26 | Sidewalk guardrail with linear induction function |
Publications (2)
| Publication Number | Publication Date |
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| CN113216049A true CN113216049A (en) | 2021-08-06 |
| CN113216049B CN113216049B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110582584.8A Active CN113216049B (en) | 2021-05-26 | 2021-05-26 | Sidewalk guardrail with linear induction function |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009013762A (en) * | 2007-07-03 | 2009-01-22 | Kenji Horibe | Standing signboard installing metal fitting |
| CN103726461A (en) * | 2013-12-31 | 2014-04-16 | 武汉理工大学 | Fence with road direction guide and anti-dazzle functions |
| CN107604852A (en) * | 2017-09-01 | 2018-01-19 | 浙江夏远信息技术有限公司 | A kind of road guard |
| CN108660959A (en) * | 2018-06-14 | 2018-10-16 | 武汉理工大学 | A kind of highway long-span bridge bend section vision inducible system |
| CN210598422U (en) * | 2019-08-29 | 2020-05-22 | 浙江诚通市政建设有限公司 | Concatenation formula municipal administration rail guard |
-
2021
- 2021-05-26 CN CN202110582584.8A patent/CN113216049B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009013762A (en) * | 2007-07-03 | 2009-01-22 | Kenji Horibe | Standing signboard installing metal fitting |
| CN103726461A (en) * | 2013-12-31 | 2014-04-16 | 武汉理工大学 | Fence with road direction guide and anti-dazzle functions |
| CN107604852A (en) * | 2017-09-01 | 2018-01-19 | 浙江夏远信息技术有限公司 | A kind of road guard |
| CN108660959A (en) * | 2018-06-14 | 2018-10-16 | 武汉理工大学 | A kind of highway long-span bridge bend section vision inducible system |
| CN210598422U (en) * | 2019-08-29 | 2020-05-22 | 浙江诚通市政建设有限公司 | Concatenation formula municipal administration rail guard |
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| CN113216049B (en) | 2022-10-11 |
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