CN112281701A - Warning device for municipal road engineering - Google Patents

Warning device for municipal road engineering Download PDF

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Publication number
CN112281701A
CN112281701A CN202011080804.9A CN202011080804A CN112281701A CN 112281701 A CN112281701 A CN 112281701A CN 202011080804 A CN202011080804 A CN 202011080804A CN 112281701 A CN112281701 A CN 112281701A
Authority
CN
China
Prior art keywords
column
fixing
warning
base
fixedly connected
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.)
Pending
Application number
CN202011080804.9A
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Chinese (zh)
Inventor
周烨箐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongwei Building Materials Technology Suzhou Co ltd
Original Assignee
Zhongwei Building Materials Technology Suzhou Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhongwei Building Materials Technology Suzhou Co ltd filed Critical Zhongwei Building Materials Technology Suzhou Co ltd
Priority to CN202011080804.9A priority Critical patent/CN112281701A/en
Publication of CN112281701A publication Critical patent/CN112281701A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/623Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection
    • E01F9/646Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by form or by structural features, e.g. for enabling displacement or deflection extensible, collapsible or pivotable
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/615Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
    • E01F9/617Illuminated or wired-up posts, bollards, pillars or like upstanding bodies or structures for traffic guidance, warning or control

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)

Abstract

The invention discloses a warning device for municipal road engineering, which comprises a base, a placing groove, a fixing mechanism, a rotary adjusting mechanism and a warning mechanism, wherein the fixing mechanism is arranged on the base; wherein the bottom surface of the base is provided with a placing groove; the fixing mechanism comprises a sliding column, a fixing ring, a push plate and a fixing cone, the sliding column is connected to the surface of the base in a sliding mode, the top end surface of the sliding column is fixedly connected with the bottom side surface of the fixing ring, the bottom end surface of the sliding column is fixedly connected with the top side surface of the push plate in the placing groove, and the bottom side surface of the push plate is fixedly connected with the top side surface of the fixing cone; the rotary adjusting mechanism comprises a motor, a connecting column, a threaded hole, a threaded column, a connecting cylinder, a top plate, a connecting rod and a fixing bolt; the warning mechanism comprises a warning lamp, a support column, a connecting seat, a fixing seat, a solar photovoltaic panel and a storage battery. This kind of warning device for town road engineering is novel in design, simple structure.

Description

Warning device for municipal road engineering
Technical Field
The invention relates to a warning device, in particular to a warning device for municipal road engineering.
Background
The municipal engineering refers to municipal infrastructure construction engineering; in China, municipal infrastructure refers to various buildings, structures, equipment and the like which are arranged in planning and construction ranges of urban areas and towns (villages) and provide paid or unpaid public products and services for residents based on government responsibilities and obligations; various public infrastructure construction supporting in urban life all belong to municipal works category, for example common urban road, bridge, subway, underground pipeline, tunnel, river course, track traffic, sewage treatment, refuse treatment processing etc. engineering, for example again with the life closely relevant various pipelines: rainwater, sewage, water supply, reclaimed water, electric power (parts except red lines), telecommunication, heating power, gas and the like, and construction of squares, urban greening and the like belong to the municipal engineering category.
At present there are a lot of problems in municipal works construction warning equipment's use, it is relatively poor at night warning effect like some warning equipment now, some warning equipment are mostly fixed establishment simultaneously, the altitude mixture control of being not convenient for can not satisfy worker's user demand, influence behaviour. Therefore, a warning device for municipal road engineering is provided to solve the problems.
Disclosure of Invention
A warning device for municipal road engineering comprises a base, a placing groove, a fixing mechanism, a rotation adjusting mechanism and a warning mechanism; wherein the bottom surface of the base is provided with a placing groove;
the fixing mechanism comprises a sliding column, a fixing ring, a push plate and a fixing cone, the sliding column is connected to the surface of the base in a sliding mode, the top end surface of the sliding column is fixedly connected with the bottom side surface of the fixing ring, the bottom end surface of the sliding column is fixedly connected with the top side surface of the push plate in the placing groove, and the bottom side surface of the push plate is fixedly connected with the top side surface of the fixing cone;
the rotary adjusting mechanism comprises a motor, a connecting column, a threaded hole, a threaded column, a connecting cylinder, a top plate, a connecting rod and a fixing bolt, the motor is fixedly connected to the top surface of the base, the top surface of an output shaft of the motor is fixedly connected with the bottom surface of the connecting column, the top surface of the connecting column is provided with the threaded hole, the threaded hole is in threaded connection with the threaded column, the top surface of the threaded column is fixedly connected with the bottom surface of the top plate, the top surface of the base is fixedly connected with the connecting cylinder, an inner cavity at the top end of the connecting cylinder is in sliding connection with the connecting rod, the top surface of the connecting rod is fixedly connected with the bottom surface of the;
warning mechanism includes warning light, support column, connecting seat, fixing base, solar photovoltaic board and battery, warning light fixed connection be in roof top side surface, roof top side middle part surface with support column bottom fixed surface is connected, the support column top with connecting seat bottom side fixed surface is connected, warning light top side with connecting seat bottom side fixed surface is connected, spliced pole top side fixedly connected with fixing base, fixing base top side fixed surface installs the solar photovoltaic board, fixing base one side is equipped with the battery of fixed mounting on connecting seat surface.
Furthermore, the number of the fixed cones is a plurality, and the fixed cones are uniformly distributed on the bottom surface of the push plate.
Further, solid fixed ring cross-section is ring structure, gu fixed ring with base parallel placement.
Further, the fixing bolt penetrates through the side surface of the top end of the connecting cylinder, and the tail end of the fixing bolt is tightly attached to the side surface of the connecting rod.
Further, the connecting cylinder number is two, two the connecting cylinder side surface with fixed ring inner wall sliding connection.
Furthermore, the solar photovoltaic panel is electrically connected with the storage battery, and the storage battery is electrically connected with the motor and the warning lamp.
Furthermore, the number of the warning lamps is a plurality, and the warning lamps are annularly distributed on the outer side of the connecting column.
Further, the number of the connecting rods is two, and the two connecting rods are symmetrically distributed around the threaded column.
Furthermore, the bottom side of the solar photovoltaic panel is fixedly connected with the surface of the connecting seat, and an included angle between the connecting seat and the solar photovoltaic panel is forty-five degrees.
Further, the threaded column and the connecting column are coaxially arranged, and the length of the threaded column is equal to that of the threaded hole.
The invention has the beneficial effects that: the invention provides a warning device for municipal road engineering, which has a good warning effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic overall perspective view of an embodiment of the present invention;
FIG. 2 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 3 is a schematic top view of a base surface according to an embodiment of the invention.
In the figure: 1. the base, 101, standing groove, 2, motor, 3, spliced pole, 301, screw hole, 4, screw thread post, 5, roof, 6, solid fixed ring, 7, slip post, 8, push pedal, 9, fixed awl, 10, connecting cylinder, 11, connecting rod, 12, fixing bolt, 13, support column, 14, warning light, 15, fixing base, 16, battery, 17, solar photovoltaic board, 18, connecting seat.
Detailed Description
In order to make the technical solutions of the present invention better understood, 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.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-3, a warning device for municipal road engineering comprises a base 1, a placing groove 101, a fixing mechanism, a rotation adjusting mechanism and a warning mechanism; wherein, the bottom surface of the base 1 is provided with a placing groove 101;
the fixing mechanism comprises a sliding column 7, a fixing ring 6, a push plate 8 and a fixing cone 9, the sliding column 7 is connected to the surface of the base 1 in a sliding mode, the top end surface of the sliding column 7 is fixedly connected with the bottom side surface of the fixing ring 6, the bottom end surface of the sliding column 7 is fixedly connected with the top side surface of the push plate 8 in the placing groove 101, and the bottom side surface of the push plate 8 is fixedly connected with the top side surface of the fixing cone 9;
the rotary adjusting mechanism comprises a motor 2, a connecting column 3, a threaded hole 301, a threaded column 4, a connecting cylinder 10, a top plate 5, a connecting rod 11 and a fixing bolt 12, wherein the motor 2 is fixedly connected to the top side surface of a base 1, the top end surface of an output shaft of the motor 2 is fixedly connected with the bottom end surface of the connecting column 3, the top end surface of the connecting column 3 is provided with the threaded hole 301, the threaded hole 301 is in threaded connection with the threaded column 4, the top end surface of the threaded column 4 is fixedly connected with the bottom side surface of the top plate 5, the top side surface of the base 1 is fixedly connected with the connecting cylinder 10, an inner cavity at the top end of the connecting cylinder 10 is in sliding connection with the connecting rod 11, the top end surface of the connecting rod 11 is fixedly;
warning mechanism includes warning light 14, support column 13, connecting seat 18, fixing base 15, solar photovoltaic board 17 and battery 16, 14 fixed connection of warning light is in 5 top side surfaces of roof, 5 top side middle part surfaces of roof with 13 bottom fixed surface of support column are connected, 13 tops of support column with 18 bottom side fixed surface of connecting seat are connected, 14 top sides of warning light with 18 bottom side fixed surface of connecting seat are connected, 3 top side fixedly connected with fixing bases 15 of spliced pole, 15 top side fixed surface of fixing base installs solar photovoltaic board 17, 15 one side of fixing base is equipped with the battery 16 of fixed mounting on 18 surfaces of connecting seat.
The number of the fixed cones 9 is a plurality, and the fixed cones 9 are uniformly distributed on the surface of the bottom side of the push plate 8, so that the fixed cones 9 are compactly placed on the bottom side of the push plate 8 and are convenient to use; the section of the fixing ring 6 is of a circular structure, and the fixing ring 6 is placed in parallel with the base 1, so that the fixing ring 6 can be conveniently placed; the fixing bolt 12 penetrates through the side surface of the top end of the connecting cylinder 10, and the tail end of the fixing bolt 12 is tightly attached to the side surface of the connecting rod 11, so that the connecting rod 11 and the connecting cylinder 10 are stably fixed; the number of the connecting cylinders 10 is two, and the side surfaces of the two connecting cylinders 10 are in sliding connection with the inner wall of the fixing ring 6, so that the fixing ring 6 is guaranteed to stably move; the solar photovoltaic panel 17 is electrically connected with the storage battery 16, and the storage battery 16 is electrically connected with the motor 2 and the warning lamp 14, so that power supply is facilitated; the number of the warning lamps 14 is a plurality, and the warning lamps 14 are annularly distributed on the outer side of the connecting column 3, so that the warning effect is improved; the number of the connecting rods 11 is two, and the two connecting rods 11 are symmetrically distributed about the threaded column 4, so that the threaded column 4 can be conveniently used; the bottom side of the solar photovoltaic panel 17 is fixedly connected with the surface of the connecting seat 18, and an included angle between the connecting seat 18 and the solar photovoltaic panel 17 is forty-five degrees, so that the solar photovoltaic panel 17 can work conveniently; threaded column 4 with spliced pole 3 coaxial setting, threaded column 4's length with screw hole 301 length equals, and the guarantee spliced pole 3 is placed compactly with threaded column 4, convenient to use.
When the device is used, electrical components appearing in the device are externally connected with a power supply and a control switch when in use, after a base 1 of the device is placed at a proper position, the fixing ring 6 is acted, the fixing ring 6 pushes the sliding column 7 to move, the sliding column 7 pushes the push plate 8 in the placing groove 101 to move, the push plate 8 further pushes the fixing cone 9 to fix, the base 1 is ensured to be stably fixed, the placing stability of the device is improved, the motor 2 is started, the motor 2 drives the connecting column 3 to rotate, the connecting column 3 further drives the threaded column 4 in the threaded hole 301, the threaded column 4 further regulates the movement of the top plate 5, the top plate 5 simultaneously drives the connecting rod 11 to slide along the connecting cylinder 10, the connecting cylinder 10 is simultaneously matched with the connecting column 3 to perform limiting operation, the top plate 5 is convenient to stably move, meanwhile, the power supply is performed, under the effect of the warning light 14 through setting up, be convenient for observe night, improve warning device's warning effect, satisfy worker's user demand, the operation of being convenient for.
The invention has the advantages that:
1. this kind of warning device for town road engineering is novel in design, simple structure, be convenient for under the fixed establishment's that sets up effect, be convenient for fix base 1 through fixed awl 9, improve the holistic fixed stability of device, satisfy worker's user demand, the operation of being convenient for.
2. When using, under the effect of the rotation regulation mechanism through setting up, be convenient for adjust from top to bottom the high position of roof 5, be convenient for adjust according to the demand, be convenient for adjust the position of placing of warning light 14, satisfy worker's operation demand, convenient to use.
3. When using, under the effect of warning mechanism through setting up, be convenient for warning under night or the dark condition, effectively improve road engineering and to the effect that the pedestrian was reminded, improve the security of road construction, have good market value, be fit for using widely.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a warning device for town road engineering which characterized in that: comprises a base (1), a placing groove (101), a fixing mechanism, a rotary adjusting mechanism and a warning mechanism; wherein the bottom surface of the base (1) is provided with a placing groove (101);
the fixing mechanism comprises a sliding column (7), a fixing ring (6), a push plate (8) and a fixing cone (9), the sliding column (7) is connected to the surface of the base (1) in a sliding mode, the top end surface of the sliding column (7) is fixedly connected with the bottom side surface of the fixing ring (6), the bottom end surface of the sliding column (7) is fixedly connected with the top side surface of the push plate (8) in the placing groove (101), and the bottom side surface of the push plate (8) is fixedly connected with the top side surface of the fixing cone (9);
the rotary adjusting mechanism comprises a motor (2), a connecting column (3), a threaded hole (301), a threaded column (4), a connecting cylinder (10), a top plate (5), a connecting rod (11) and a fixing bolt (12), the motor (2) is fixedly connected to the top side surface of the base (1), the top end surface of an output shaft of the motor (2) is fixedly connected with the bottom end surface of the connecting column (3), the threaded hole (301) is formed in the top end surface of the connecting column (3), the threaded column (4) is connected to the threaded hole (301) through door threads, the top end surface of the threaded column (4) is fixedly connected with the bottom side surface of the top plate (5), the connecting cylinder (10) is fixedly connected to the top side surface of the base (1), the connecting rod (11) is slidably connected to an inner cavity in the top end of the connecting cylinder (10), and the top end surface of, a fixed bolt (12) is connected to the side surface of the top end of the connecting cylinder (10) in a threaded manner;
warning mechanism includes warning light (14), support column (13), connecting seat (18), fixing base (15), solar photovoltaic board (17) and battery (16), warning light (14) fixed connection be in roof (5) top side surface, roof (5) top side middle part surface with support column (13) bottom fixed surface is connected, support column (13) top with connecting seat (18) bottom side fixed surface is connected, warning light (14) top side with connecting seat (18) bottom side fixed surface is connected, spliced pole (3) top side fixed connection has fixing base (15), fixing base (15) top side fixed surface installs solar photovoltaic board (17), fixing base (15) one side is equipped with battery (16) of fixed mounting on connecting seat (18) surface.
2. The warning device for municipal road engineering according to claim 1, wherein: the number of the fixed cones (9) is a plurality, and the fixed cones (9) are uniformly distributed on the bottom surface of the push plate (8).
3. The warning device for municipal road engineering according to claim 1, wherein: the cross section of the fixing ring (6) is of a circular ring structure, and the fixing ring (6) and the base (1) are placed in parallel.
4. The warning device for municipal road engineering according to claim 1, wherein: the fixing bolt (12) penetrates through the side surface of the top end of the connecting cylinder (10), and the tail end of the fixing bolt (12) is tightly attached to the side surface of the connecting rod (11).
5. The warning device for municipal road engineering according to claim 1, wherein: the number of the connecting cylinders (10) is two, and the side surfaces of the connecting cylinders (10) are connected with the inner wall of the fixing ring (6) in a sliding mode.
6. The warning device for municipal road engineering according to claim 1, wherein: the solar photovoltaic panel (17) is electrically connected with the storage battery (16), and the storage battery (16) is electrically connected with the motor (2) and the warning lamp (14).
7. The warning device for municipal road engineering according to claim 1, wherein: the number of the warning lamps (14) is a plurality, and the warning lamps (14) are annularly distributed on the outer side of the connecting column (3).
8. The warning device for municipal road engineering according to claim 1, wherein: the number of the connecting rods (11) is two, and the two connecting rods (11) are symmetrically distributed around the threaded column (4).
9. The warning device for municipal road engineering according to claim 1, wherein: the bottom side of the solar photovoltaic panel (17) is fixedly connected with the surface of the connecting seat (18), and an included angle between the connecting seat (18) and the solar photovoltaic panel (17) is forty-five degrees.
10. The warning device for municipal road engineering according to claim 1, wherein: the threaded column (4) and the connecting column (3) are coaxially arranged, and the length of the threaded column (4) is equal to that of the threaded hole (301).
CN202011080804.9A 2020-10-11 2020-10-11 Warning device for municipal road engineering Pending CN112281701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011080804.9A CN112281701A (en) 2020-10-11 2020-10-11 Warning device for municipal road engineering

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Application Number Priority Date Filing Date Title
CN202011080804.9A CN112281701A (en) 2020-10-11 2020-10-11 Warning device for municipal road engineering

Publications (1)

Publication Number Publication Date
CN112281701A true CN112281701A (en) 2021-01-29

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CN202011080804.9A Pending CN112281701A (en) 2020-10-11 2020-10-11 Warning device for municipal road engineering

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060099655A (en) * 2005-03-14 2006-09-20 김동환 Road sign structure
CN207812322U (en) * 2017-12-03 2018-09-04 西安汇富融通信息科技有限责任公司 A kind of garden layout alarming device
CN207812329U (en) * 2017-11-24 2018-09-04 天津合力交通设施工程有限公司 A kind of traffic sign with high-stability
CN208328745U (en) * 2018-04-24 2019-01-04 朱立立 A kind of dedicated alarming device of municipal construction easy to remove
CN209891113U (en) * 2019-04-10 2020-01-03 威海市乾元公路工程有限公司 Roadblock with night warning function
CN211044858U (en) * 2019-12-12 2020-07-17 怀化职业技术学院 Sign special for tourist attraction
CN211207818U (en) * 2020-02-21 2020-08-07 中国水利水电第九工程局有限公司 Warning device for construction convenient to adjust
CN211596516U (en) * 2019-12-30 2020-09-29 广东电网有限责任公司 Signboard with night anti-collision warning function
CN211596501U (en) * 2019-11-23 2020-09-29 西北华鹏建工集团有限公司 Building safety construction equipment

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060099655A (en) * 2005-03-14 2006-09-20 김동환 Road sign structure
CN207812329U (en) * 2017-11-24 2018-09-04 天津合力交通设施工程有限公司 A kind of traffic sign with high-stability
CN207812322U (en) * 2017-12-03 2018-09-04 西安汇富融通信息科技有限责任公司 A kind of garden layout alarming device
CN208328745U (en) * 2018-04-24 2019-01-04 朱立立 A kind of dedicated alarming device of municipal construction easy to remove
CN209891113U (en) * 2019-04-10 2020-01-03 威海市乾元公路工程有限公司 Roadblock with night warning function
CN211596501U (en) * 2019-11-23 2020-09-29 西北华鹏建工集团有限公司 Building safety construction equipment
CN211044858U (en) * 2019-12-12 2020-07-17 怀化职业技术学院 Sign special for tourist attraction
CN211596516U (en) * 2019-12-30 2020-09-29 广东电网有限责任公司 Signboard with night anti-collision warning function
CN211207818U (en) * 2020-02-21 2020-08-07 中国水利水电第九工程局有限公司 Warning device for construction convenient to adjust

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Application publication date: 20210129

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