CN215906624U - Anti-collision roadblock with buffering and protecting functions and used for security and protection - Google Patents

Anti-collision roadblock with buffering and protecting functions and used for security and protection Download PDF

Info

Publication number
CN215906624U
CN215906624U CN202121425687.5U CN202121425687U CN215906624U CN 215906624 U CN215906624 U CN 215906624U CN 202121425687 U CN202121425687 U CN 202121425687U CN 215906624 U CN215906624 U CN 215906624U
Authority
CN
China
Prior art keywords
group
alarm
isolation box
plate
roadblock
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.)
Active
Application number
CN202121425687.5U
Other languages
Chinese (zh)
Inventor
廖娅楠
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.)
Qinghai Xingli Highway And Bridge Engineering Co ltd
Original Assignee
Qinghai Xingli Highway And Bridge Engineering 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 Qinghai Xingli Highway And Bridge Engineering Co ltd filed Critical Qinghai Xingli Highway And Bridge Engineering Co ltd
Priority to CN202121425687.5U priority Critical patent/CN215906624U/en
Application granted granted Critical
Publication of CN215906624U publication Critical patent/CN215906624U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)

Abstract

The utility model relates to the technical field of municipal roads and discloses a collision-proof roadblock with a buffering and protecting function for security protection. This scour protection hits roadblock for security protection with buffering safeguard function, through audible-visual annunciator, when the vehicle is in the in-process of traveling and is wiped and touch the device, the flexible pad receives the in-process that the vehicle was wiped and is bumped and has reduced the alarm board and led to the fact the scotch probability to it through the deformation of self, the flexible pad is conducted on the alarm board with the impact force simultaneously, the alarm board is opened through trigger plate control contact switch, contact switch control audible-visual annunciator sends audible-visual annunciator and warns driver's revised route, the probability of rubbing is cut with the vehicle to the reducing means emergence, the passive alarming nature of device has been improved, thereby the practicality of device has been strengthened.

Description

Anti-collision roadblock with buffering and protecting functions and used for security and protection
Technical Field
The utility model relates to the technical field of municipal roads, in particular to a collision-proof roadblock with a buffering and protecting function for security protection.
Background
Through retrieval, Chinese patent No. CN112431153A discloses a collision-proof roadblock device, which relates to the technical field of paint production, in particular to a collision-proof roadblock device, comprising a collision box and a reinforcement box, wherein the collision box and the reinforcement box are adjacently and fixedly arranged and are integrally connected, a first expansion plate, a second expansion plate and a spring are arranged in the collision box, a first cylinder is formed in the collision box through the second expansion plate and a box surface, a first opening on the first cylinder realizes the cleaning treatment of the road surface at the bottom of the reinforcement box, a second cylinder, a piston plate, a magnet block and a sucker are arranged in the reinforcement box, a second opening communicated with the collision box is arranged on the second cylinder, the sucker is fixedly connected on the piston plate, gas is input into the second cylinder through the collision box, the sucker correspondingly moves downwards, and is sucked with the road surface, thereby achieving the purpose of resisting the collision of an automobile, the automobile crash prevention device can better prevent the automobile from crashing and provide better safety guarantee for related personnel in the range of the roadblock.
When the roadblock in the prior art is used, the operation area is isolated from the travelling road through the roadblock, but the travelling road for isolating the working area is narrow, so that the roadblock is easy to scratch with a vehicle, and the vehicle is easy to injure a driver in the process of high-speed impacting the roadblock, so that the safety of the roadblock is reduced.
Based on the above, the utility model designs the anti-collision roadblock with the buffer protection function for security protection, so as to solve the problems.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides an anti-collision roadblock with a buffer protection function for security protection, and solves the problems in the background technology.
(II) technical scheme
In order to achieve the purpose, the utility model provides the following technical scheme: a collision-proof roadblock with buffering and protecting functions for security protection comprises an isolation box, wherein a back plate is fixedly mounted on the back surface of the isolation box through bolts, a plurality of groups of balancing weights are arranged in the isolation box, a mobile power supply is arranged in the isolation box, an alarm plate is hinged to the isolation box, sliding groove holes are formed in the left side and the right side of the front surface of the alarm plate, I-shaped sliding blocks are connected to the inside of each group of sliding groove holes in a sliding mode, alarm sleeves are arranged on the left side and the right side of the front surface of the isolation box, guide columns are connected to the inner wall of each group of alarm sleeves in a sliding mode, one end, facing the alarm plate, of each group of guide columns is hinged to one end, facing the isolation box, of each group of I-shaped sliding blocks, sliding holes are formed in each group of alarm sleeves, a trigger plate is arranged on each group of guide columns, mounting plates are arranged on the left side and the right side of the front surface of the isolation box, and the bottom of each group of mounting plates are fixedly mounted with a contact switch through bolts, every group contact switch's start-up end all laminates with one side of corresponding trigger plate towards the shielded box, be equipped with three first bow-shaped spring boards of group between shielded box and the warning board, the front of warning board is equipped with the flexible pad, it has the deflector to articulate on the shielded box, be equipped with three second bow-shaped spring boards of group between shielded box and the deflector, multiunit grapple strip hole has been seted up in the front of deflector, the front fixed mounting of deflector has audible-visual annunciator, the upper surface of shielded box is equipped with the multiunit gib block, and every group contact switch's output all passes through the wire electricity with audible-visual annunciator's input and is connected, every group contact switch's input all passes through the wire electricity with portable power source's output and is connected.
Preferably, the front surface of the guide plate is provided with a warning display screen, and the input end of the warning display screen is electrically connected with the output end of the mobile power supply through a wire.
Preferably, the front surface of the guide plate is fixedly provided with two groups of light reflecting warning plates, and the light reflecting color of each group of light reflecting warning plates is red.
Preferably, the back of backplate is equipped with three group's oblique supports, every group the bottom of oblique support all is equipped with the bottom plate that is used for reducing pressure to the ground.
Preferably, each group of grapple strip holes are internally provided with a protective sleeve, and each group of grapple rods are positioned inside the corresponding protective sleeve.
Preferably, the bottom of the isolation box is provided with a plurality of groups of ground grabbing hook nails, and the ground grabbing direction of each group of ground grabbing hook nails faces the back plate.
(III) advantageous effects
Compared with the prior art, the utility model provides an anti-collision roadblock with a buffering and protecting function for security and protection, which has the following beneficial effects:
1. this scour protection hits roadblock for security protection with buffering safeguard function, through audible-visual annunciator, when the vehicle is in the in-process of traveling and is wiped and touch the device, the flexible pad receives the in-process that the vehicle was wiped and is bumped and has reduced the alarm board and led to the fact the scotch probability to it through the deformation of self, the flexible pad is conducted on the alarm board with the impact force simultaneously, the alarm board is opened through trigger plate control contact switch, contact switch control audible-visual annunciator sends audible-visual annunciator and warns driver's revised route, the probability of rubbing is cut with the vehicle to the reducing means emergence, the passive alarming nature of device has been improved, thereby the practicality of device has been strengthened.
2. This scour protection hits roadblock for security protection with buffering safeguard function, through the flexile pad, first bow-shaped spring board and hook rod, when the vehicle was with high-speed impact device, the flexile pad carries out the secondary buffering through self elastic deformation with first bow-shaped spring board to the vehicle, the vehicle after twice buffering carries out destruction formula hook to its bottom and grabs the buffering of accomplishing the third time and stop it through the hook rod that the landslide that isolation box and alarm plate generated, the vehicle has been reduced and has caused navigating mate injured probability at high-speed percussion device's in-process, the security of device has been improved.
3. This scour protection hits roadblock for security protection with buffering safeguard function, through balancing weight and portable power source, when the device is removing the mounted position, take off the backplate from the shielded box back through the bolt, the inside of shielded box is installed with balancing weight and portable power source to the backplate after taking off, and the balancing weight and portable power source lay after stabilizing and install the shielded box back with the backplate through the bolt, have reduced the self weight of device to the convenience that the device removed has been improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a right side view of the structure of the present invention;
fig. 3 is a perspective exploded view of the structure of the present invention.
In the figure: 1. an isolation box; 2. a back plate; 3. a mobile power supply; 4. an alarm panel; 5. a sliding slot hole; 6. an I-shaped sliding block; 7. an alarm sleeve; 8. a guide post; 9. a trigger plate; 10. mounting a plate; 11. a contact switch; 12. a first bow spring plate; 13. a flexible pad; 14. a guide plate; 15. a grapple strip hole; 16. an audible and visual alarm; 17. a hook rod; 18. a warning display screen; 19. a reflective warning panel; 20. an oblique bracket; 21. a base plate; 22. a protective sleeve; 23. a ground grabbing hook nail; 24. a balancing weight; 25. a second bow spring plate.
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.
Referring to fig. 1-3, the present invention provides a technical solution: a collision-proof roadblock with buffer protection function for security protection comprises an isolation box 1, a back plate 2 is fixedly installed on the back surface of the isolation box 1 through bolts, a plurality of groups of balancing weights 24 are arranged in the isolation box 1, the balancing weights 24 and a mobile power supply 3 pass through, when the device is moved to an installation position, the back plate 2 is taken down from the back surface of the isolation box 1 through the bolts, the balancing weights 24 and the mobile power supply 3 are installed in the isolation box 1 after the back plate 2 is taken down, the balancing weights 24 and the mobile power supply 3 are installed on the back surface of the isolation box 1 through the bolts after the balancing weights 24 and the mobile power supply 3 are stably installed, the self weight of the device is reduced, the moving convenience of the device is improved, the mobile power supply 3 is arranged in the isolation box 1, an alarm plate 4 is hinged on the isolation box 1, sliding groove holes 5 are formed in the left side and the right side of the front surface of the alarm plate 4, and an I-shaped slider 6 is connected in each group of the sliding groove holes 5 in a sliding manner, the left side and the right side of the front of the isolation box 1 are respectively provided with an alarm sleeve 7, the inner wall of each group of alarm sleeves 7 is connected with a guide post 8 in a sliding way, one end of each group of guide posts 8 facing to the alarm plate 4 is hinged with one end of each group of I-shaped sliders 6 facing to the isolation box 1, each group of alarm sleeves 7 is provided with a sliding hole, each group of guide posts 8 is provided with a trigger plate 9, the left side and the right side of the front of the isolation box 1 are respectively provided with a mounting plate 10, the bottom of each group of mounting plates 10 is fixedly provided with a contact switch 11 through a bolt, the starting end of each group of contact switches 11 is attached to one side of the corresponding trigger plate 9 facing to the isolation box 1, three groups of first bow-shaped spring plates 12 are arranged between the isolation box 1 and the alarm plate 4, the front of the alarm plate 4 is provided with a flexible pad 13, the isolation box 1 is hinged with a guide plate 14, three groups of second bow-shaped spring plates 25 are arranged between the isolation box 1 and the guide plate 14, the front of the guide plate 14 is provided with a plurality of groups of grappling strip holes 15, the front surface of the guide plate 14 is fixedly provided with the audible and visual alarm 16, when a vehicle rubs against the device in the running process, the probability that the alarm plate 4 scratches the device is reduced through self deformation of the flexible pad 13 in the process that the vehicle rubs against the device through the audible and visual alarm 16, meanwhile, the flexible pad 13 transmits impact force to the alarm plate 4, the alarm plate 4 controls the contact switch 11 to be opened through the trigger plate 9, the contact switch 11 controls the audible and visual alarm 16 to send out audible and visual alarm to warn a driver to correct a route, the probability that the device and the vehicle are scratched is reduced, the passive alarm performance of the device is improved, the practicability of the device is enhanced, the upper surface of the isolation box 1 is provided with a plurality of groups of hook rods 17, and when the vehicle impacts the device at high speed, the flexible pad 13 and the first bow spring plate 12 perform secondary buffering on the vehicle through self elastic deformation, the vehicle after twice buffering is caught by the hook rod 17 that stretches out through the landslide that isolation box 1 and alarm panel 4 generated and is accomplished buffering the third time and stop it to its bottom destruction formula hook, the vehicle has been reduced and the in-process that causes navigating mate injured at high-speed percussion device of vehicle, the security of device has been improved, the output of every group contact switch 11 all passes through the wire electricity with audible-visual annunciator 16 and is connected, the input of every group contact switch 11 all passes through the wire electricity with portable power source 3's output and is connected.
In the utility model, in order to improve the active warning effect of the device, the front surface of the guide plate 14 is provided with the warning display screen 18, the input end of the warning display screen 18 is electrically connected with the output end of the mobile power supply 3 through a lead, and vehicles and personnel can obtain warning information in time through the warning display screen 18, so that the active warning effect of the device is improved.
In the utility model, in order to improve the warning effect of the device at night after power failure, two groups of reflecting warning plates 19 are fixedly arranged on the front surface of the guide plate 14, the reflecting color of each group of reflecting warning plates 19 is red, and the device can still warn at night after power failure by reflecting vehicle light through the reflecting warning plates 19, thereby improving the warning effect of the device at night after power failure.
In the utility model, in order to reduce the probability of side turning of the device, three groups of oblique brackets 20 are arranged on the back surface of the back plate 2, a bottom plate 21 for reducing the pressure on the ground is arranged at the bottom end of each group of oblique brackets 20, and the oblique brackets 20 and the bottom plate 21 ensure that the device obtains oblique supporting force in the process of executing blocking operation, thereby reducing the probability of side turning of the device.
In the utility model, in order to improve the safety of the device, the protecting sleeves 22 are arranged inside each group of grappling strip holes 15, each group of hook rods 17 are positioned inside the corresponding protecting sleeves 22, and the hook rods 17 are difficult to injure operators through the protecting sleeves 22, so that the safety of the device is improved.
In the utility model, in order to reduce the sliding probability of the vehicle in the process of impacting the device, a plurality of groups of ground-grabbing hook nails 23 are arranged at the bottom of the isolation box 1, the ground-grabbing direction of each group of ground-grabbing hook nails 23 faces to the back plate 2, and the friction force between the device and the installation ground is increased through the ground-grabbing hook nails 23, so that the sliding probability of the vehicle in the process of impacting the device is reduced.
The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.
When the device is used, the device is moved to a rated position, the back plate 2 is taken down from the back surface of the isolation box 1 through the bolt, the balancing weight 24 and the mobile power supply 3 are installed in the isolation box 1 after the back plate 2 is taken down, the balancing weight 24 and the mobile power supply 3 are stably placed, the back plate 2 is installed on the back surface of the isolation box 1 through the bolt, when a vehicle rubs against the device in the driving process, the probability that the alarm plate 4 is scratched by the flexible pad 13 is reduced through the deformation of the flexible pad 13 in the process of being rubbed by the vehicle, meanwhile, the flexible pad 13 transmits the impact force to the alarm plate 4, the alarm plate 4 drives the guide post 8 to move along the alarm sleeve 7 under the action of the impact force, the contact switch 11 is controlled to be opened by the trigger plate 9 in the moving process of the guide post 8, the contact switch 11 controls the audible and visual alarm 16 to give an audible and visual alarm to warn a driver to correct a route, when the vehicle impacts the device at a high speed, the flexible cushion 13 buffers the vehicle for the first time through self deformation, meanwhile, the flexible cushion 13 transmits impact force to the alarm plate 4, the alarm plate 4 drives the guide post 8 to move along the alarm sleeve 7 under the action of the impact force, the alarm plate 4 transmits the impact force to the first bow spring plate 12 in the moving process, the first bow spring plate 12 buffers the vehicle for the second time through self elastic deformation, the alarm plate 4 stops moving to generate an upward slope between the guide post 8 and the alarm plate 4 after the rear end of the guide post 8 is in contact with the isolation box 1, the vehicle drives the guide plate 14 through the slope generated by the isolation box 1 and the alarm plate 4, the guide plate 14 moves downwards under the action of the self gravity of the vehicle, the guide plate 14 enables the hook rod 17 to extend out through the hook strip hole 15 in the moving process, and the extending hook rod 17 destructively hooks the bottom of the vehicle to enable the vehicle to buffer and stop for the third time.
In conclusion, according to the anti-collision roadblock with the buffering and protecting functions for security and protection, through the audible and visual alarm 16, when a vehicle rubs against the device in the running process, the probability that the alarm board 4 scratches the device is reduced through self deformation in the process that the flexible pad 13 is rubbed by the vehicle, meanwhile, the impact force is transmitted to the alarm board 4 through the flexible pad 13, the alarm board 4 controls the contact switch 11 to be opened through the trigger board 9, the contact switch 11 controls the audible and visual alarm 16 to send out audible and visual alarms to warn a driver to correct a route, the probability that the device and the vehicle scratch is reduced, the passive alarm performance of the device is improved, and therefore the practicability of the device is enhanced.
This scour protection hits roadblock for security protection with buffering safeguard function, through flexible pad 13, first bow-shaped spring board 12 and hook rod 17, when the vehicle with high-speed impact device, flexible pad 13 and first bow-shaped spring board 12 carry out the secondary buffering through self elastic deformation to the vehicle, the vehicle after twice buffering carries out destruction formula hook to its bottom and grabs the buffering of accomplishing the third time and stop it through hook rod 17 that the landslide that shielded box 1 and alarm plate 4 generated is stretched out, the vehicle has been reduced and has caused navigating mate injured probability at high-speed percussion device's in-process, the security of device has been improved.
This scour protection hits roadblock for security protection with buffering safeguard function, through balancing weight 24 and portable power source 3, when the device is when removing the mounted position, take off 2 backs of isolation box through the bolt, 2 backs of taking off install the inside of isolation box 1 with balancing weight 24 and portable power source 3, balancing weight 24 and portable power source 3 lay firm back and install 1 backs of isolation box through the bolt with 2 backs of backplate, the self weight of device has been reduced, thereby the convenience that the device removed has been improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an scour protection hits roadblock for security protection with buffering safeguard function, includes shielded cell (1), its characterized in that: a back plate (2) is fixedly installed on the back surface of the isolation box (1) through bolts, a plurality of groups of balancing weights (24) are arranged inside the isolation box (1), a mobile power supply (3) is arranged inside the isolation box (1), alarm plates (4) are hinged on the isolation box (1), sliding groove holes (5) are formed in the left side and the right side of the front surface of each alarm plate (4), I-shaped sliding blocks (6) are connected inside each group of sliding groove holes (5) in a sliding mode, alarm sleeves (7) are arranged on the left side and the right side of the front surface of the isolation box (1), guide pillars (8) are connected on the inner wall of each group of alarm sleeves (7) in a sliding mode, one end, facing the alarm plates (4), of each group of guide pillars (8) is hinged to one end, facing the isolation box (1), of each group of alarm sleeves (7) is provided with a sliding hole, trigger plates (9) are arranged on each guide post (8), mounting plates (10) are arranged on the left side and the right side of the front of the isolation box (1), contact switches (11) are fixedly mounted at the bottoms of the mounting plates (10) of each group through bolts, the starting end of each contact switch (11) of each group is attached to one side, facing the isolation box (1), of the corresponding trigger plate (9), three groups of first bow-shaped spring plates (12) are arranged between the isolation box (1) and the alarm plate (4), a flexible pad (13) is arranged on the front of the alarm plate (4), a guide plate (14) is hinged to the isolation box (1), three groups of second bow-shaped spring plates (25) are arranged between the isolation box (1) and the guide plate (14), a plurality of groups of grabbing hook strip holes (15) are formed in the front of the guide plate (14), and an audible and visual alarm (16) is fixedly mounted on the front of the guide plate (14), the upper surface of isolation box (1) is equipped with multiunit hook pole (17), every group the output of contact switch (11) all passes through the wire electricity with audible-visual annunciator (16) and is connected, every group the input of contact switch (11) all passes through the wire electricity with portable power source (3) and is connected.
2. The anti-collision roadblock with the buffer protection function for security and protection as claimed in claim 1, wherein: the front surface of the guide plate (14) is provided with a warning display screen (18), and the input end of the warning display screen (18) is electrically connected with the output end of the mobile power supply (3) through a lead.
3. The anti-collision roadblock with the buffer protection function for security and protection as claimed in claim 1, wherein: two groups of light-reflecting warning plates (19) are fixedly mounted on the front surface of the guide plate (14), and the light-reflecting color of each group of light-reflecting warning plates (19) is red.
4. The anti-collision roadblock with the buffer protection function for security and protection as claimed in claim 1, wherein: the back of backplate (2) is equipped with three group's oblique supports (20), every group the bottom of oblique support (20) all is equipped with bottom plate (21) that are used for reducing pressure to the ground.
5. The anti-collision roadblock with the buffer protection function for security and protection as claimed in claim 1, wherein: every group all be equipped with lag (22) in the inside of grapple strip hole (15), every group hook rod (17) all are located the inside of corresponding lag (22).
6. The anti-collision roadblock with the buffer protection function for security and protection as claimed in claim 1, wherein: the bottom of the isolation box (1) is provided with a plurality of groups of ground grabbing hook nails (23), and the ground grabbing direction of each group of ground grabbing hook nails (23) faces the back plate (2).
CN202121425687.5U 2021-06-25 2021-06-25 Anti-collision roadblock with buffering and protecting functions and used for security and protection Active CN215906624U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121425687.5U CN215906624U (en) 2021-06-25 2021-06-25 Anti-collision roadblock with buffering and protecting functions and used for security and protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121425687.5U CN215906624U (en) 2021-06-25 2021-06-25 Anti-collision roadblock with buffering and protecting functions and used for security and protection

Publications (1)

Publication Number Publication Date
CN215906624U true CN215906624U (en) 2022-02-25

Family

ID=80288350

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121425687.5U Active CN215906624U (en) 2021-06-25 2021-06-25 Anti-collision roadblock with buffering and protecting functions and used for security and protection

Country Status (1)

Country Link
CN (1) CN215906624U (en)

Similar Documents

Publication Publication Date Title
CN215906624U (en) Anti-collision roadblock with buffering and protecting functions and used for security and protection
CN210315304U (en) Road safety limit for height device
CN215714861U (en) Civil engineering road and bridge anticollision barrier
CN217675673U (en) Unmanned on duty screw ship unloader collision early warning equipment
CN216474496U (en) Bridge protection device convenient to installation
CN210127431U (en) Road bridge collision avoidance device
CN204237388U (en) A kind of passenger of preventing crashes into the automatic safety device of elevator hoistways
CN217978021U (en) Anti-collision protection structure of vehicle-mounted monitor
CN220643923U (en) Sound insulation barrier with connection structure
CN217810610U (en) Safety warning board with anti-collision structure
CN216838977U (en) Anti-collision peripheral for highway bridge
CN220225036U (en) Road traffic safety limiting device
CN220551694U (en) Safety protection display screen frame
CN220117885U (en) Bridge road construction rail guard of solar energy power supply
CN218346041U (en) Speed-reducing anti-collision guardrail device
CN216361237U (en) A anticollision type detection device for highway roadside humidity detects
CN212404931U (en) Limiting and protecting device for traffic road
CN218347050U (en) Safety anti-collision fence for highway construction
CN221002857U (en) Tunnel positioning early warning device
CN213233242U (en) Anti-collision highway guardrail
CN215252539U (en) Municipal administration street crash barrier
CN219527402U (en) Warning device convenient for night observation and used for municipal engineering construction
CN218597937U (en) Protection device for highway maintenance
CN214783532U (en) Flexible anti-collision protection alarm device for central isolation belt of highway
CN216341118U (en) Protective device for preventing engineering vehicle from approaching high-voltage wire

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant