CN-224216303-U - Vehicle safe passing pre-inspection system

CN224216303UCN 224216303 UCN224216303 UCN 224216303UCN-224216303-U

Abstract

The utility model discloses a vehicle safety passing pre-inspection system which is characterized by comprising a vehicle size safety detection device, a vehicle weight detection device and a vehicle pressure intensity detection device, wherein the vehicle size safety detection device comprises a passing door which is arranged along the width direction of a driving road surface, the passing door comprises two vertical rods which are vertically arranged at two sides, the passing door also comprises a height limiting rod which is horizontally arranged above the two vertical rods, a row of laser sensors is arranged on the lower surface of the height limiting rod along the length direction, each laser sensor comprises a downward laser emitter and a corresponding laser detector, the downward laser emitters are used for emitting laser, the corresponding laser detectors are used for receiving reflected laser, the laser emitters are arranged in a joint way and are arranged at intervals in front of and behind the corresponding row of laser detectors, and the laser detectors are connected with a control center. The utility model has the characteristics of more comprehensive detection and higher safety, can better ensure traffic safety, protect road facilities and optimize road management.

Inventors

PAN YUNWEN
YAN TIANJIAO
LIU JIANYAO
XIE MINGBO
ZHAO YANCHAO
LI HUOKUN
HUANG WEI

Assignees

南昌大学

Dates

Publication Date: 20260508
Application Date: 20250514

Claims (10)

1. The vehicle safety passing pre-inspection system is characterized by comprising a vehicle size safety detection device, a vehicle weight detection device and a vehicle pressure detection device; The vehicle dimension safety detection device comprises a pass gate arranged along the width direction of a driving road surface, the pass gate comprises two vertical rods vertically arranged on two sides, the distance between the two vertical rods is larger than the vehicle safety width threshold value, the pass gate further comprises a height limiting rod horizontally arranged above the two vertical rods, the height limiting rod is located at the position of the vehicle safety height threshold value, a row of laser sensors are arranged on the lower surface of the height limiting rod along the length direction, each laser sensor comprises a laser emitter which is downwards arranged and a corresponding laser detector which is used for receiving reflected laser, each laser emitter is arranged in a row in a laminating mode and is arranged at intervals around the corresponding laser detectors, and the laser detectors are connected with a control center.
2. The vehicle safe passing pre-inspection system according to claim 1, wherein a proximity switch is further arranged on the inner side of the height limiting rod, and the proximity switch is installed on the starting control circuit of the laser sensor in series.
3. The vehicle safe passing pre-inspection system according to claim 1, wherein the vehicle weight detecting device comprises a floating pressing plate which is horizontally arranged, the lower part of the floating pressing plate is supported on the road surface in a floating way by a vertical spring which is uniformly arranged, a pressing rod is vertically and downwards fixedly arranged in the middle of the lower surface of the floating pressing plate, the lower end of the pressing rod can be inserted into a detecting cavity which is arranged in a closed way below the road surface in a sliding way, and a pressure detecting device for detecting the pressure under the pressing rod is arranged in the detecting cavity.
4. The vehicle safe passing pre-inspection system according to claim 3, wherein the pressure detection device comprises a detection lever arranged transversely, the position of a fulcrum of the detection lever is hinged on a lever support, the end part of the long arm end of the detection lever is provided with a conductive section, the conductive section is provided with a sliding contact, the lower end of the pressure lever is pressed on the short arm end of the detection lever, the pressure detection device further comprises an arc resistor, the arc resistor is arranged along the rotation direction of the end part of the long arm end of the detection lever, a sliding groove is arranged on the arc resistor and is in sliding fit with the sliding contact, one end of the arc resistor and the conductive section are connected into a resistor detection circuit module, and the resistor detection circuit module is connected with the control center.
5. The vehicle safe passing pre-inspection system according to claim 4, wherein an inserting port is arranged at the upper end of the detection cavity for inserting a compression bar, and a flexible sealing cover is arranged around the inserting port and between the compression bar in a sealing manner.
6. The vehicle safe passing pre-inspection system according to claim 4, wherein the front and rear ends of the floating pressure plate are respectively hinged with an inclined strap and a road surface.
7. The vehicle safe passing pre-inspection system according to claim 6, wherein a roller is provided at an end of the inclined strap that is connected to the road surface.
8. The vehicle safe passing pre-inspection system according to claim 1, wherein the vehicle pressure detecting device comprises two parallel detecting belts which are arranged corresponding to wheels on two sides of a vehicle, the inner space of the two detecting belts is smaller than the inner space of the minimum wheels of the vehicle, the outer space of the two detecting belts is larger than the outer space of the maximum wheels of the vehicle, a plurality of pressure sensors are uniformly arranged in an array manner in the detecting belts, and each pressure sensor is connected with the control center.
9. The vehicle safe passing pre-inspection system according to claim 8, wherein the detection belt is integrally provided with a mounting groove, the pressure sensor is mounted in the mounting groove, and an elastic skin is hermetically arranged on the upper surface of the mounting groove.
10. The vehicle safe passing pre-inspection system according to claim 9, wherein the bottom of the installation groove is provided with a matched installation sinking groove corresponding to each pressure sensor, each pressure sensor is installed in the corresponding installation sinking groove, the upper surface of the pressure sensor protrudes out of the upper surface of the installation sinking groove when the pressure sensor is not stressed, and the upper surface of the pressure sensor is lower than the upper surface of the installation sinking groove when the pressure sensor is stressed to the limit; The installation groove is filled with non-Newtonian fluid between the upper surface of the pressure sensor and the elastic skin.

Description

Vehicle safe passing pre-inspection system Technical Field The utility model relates to the technical field of vehicle running safety detection, in particular to a vehicle safety passing pre-detection system. Background Along with the continuous promotion of the urban process of China and the sustainable development of national economy, the number of freight vehicles is increased day by day, and meanwhile, the traffic safety problem of the freight vehicles is also increasingly prominent in social life. Tunnels, bridge openings, viaducts are used as basic building blocks for road traffic, which are very common in modern urban road networks. Existing vehicle traffic safety detection generally focuses on both vehicle exterior dimension detection and vehicle weight detection. The safety detection of the external dimensions of the vehicle generally aims at the situation that the road can pass through the tunnel or the bridge hole and other areas, and if the vehicle is not suitable in height and width, the vehicle cannot pass through, so that the safety detection is required in advance. And the vehicle weight detection is generally used for the situation that the vehicle is required to be limited in weight due to geological reasons or the reasons that a weighing limit bridge exists on a part of pavement. The safety detection of the external dimensions of the vehicle is generally realized by adopting a height limiting door and a width limiting door at present, namely a door store with limited height and width is adopted, and if the vehicle can pass through, the safety is judged. The detection mode is very simple and direct, but the mode has a great defect that the traffic condition of the height limiting door or the width limiting door is different from the traffic condition of the tunnel or the bridge opening. The height-limiting door or the width-limiting door is short in the length direction and instantly passes, but the tunnel or the bridge hole is long in the length direction, so that a vehicle can travel for a certain time in the tunnel or the bridge hole, and a turning road surface is often present. Therefore, the influence on the height limiting door is probably small, but the width limiting door is easy to appear, although the driver operates the width limiting door without problems, when an actual tunnel passes, friction contact is easily generated between two sides of a vehicle and the wall of the tunnel due to the fact that the distance is long, so that detection is inaccurate, and safety is not high. In addition, for vehicle weight detection, a floating plate is generally arranged on a road surface, a gravity sensor is arranged below the floating plate, then the vehicle runs on the floating plate, and the weight of the vehicle is directly collected by the gravity sensor and compared with a safety threshold value, so that detection is realized. The detection mode has the defects that firstly, the weight sensor works under the environment of long-term high pressure and dust, the stability is poor, the failure or the misalignment is easy, and the service life is low. Secondly, the detection mode only detects the weight of the vehicle, but actually the widths and even the numbers of the tires of different vehicles are different, so that the pressure of the vehicle to the road surface is different when the vehicle runs, and the weight of the vehicle cannot represent the pressure of the vehicle to the road surface. The damage of the vehicle to the road surface is not only related to the weight of the vehicle, but also more time is related to the pressure of the vehicle to the road surface. Therefore, the current method for judging the road surface damage capability by independently detecting the weight of the vehicle ignores the influence of the pressure of the vehicle and has poor accuracy. Disclosure of utility model Aiming at the defects, the utility model aims to provide a vehicle safe passing pre-inspection system with more comprehensive detection and higher safety, so that the vehicle safe passing pre-inspection system can better ensure traffic safety, protect road facilities and optimize road management. In order to solve the technical problems, the utility model adopts the following technical scheme: The vehicle safety passing pre-inspection system is characterized by comprising a vehicle size safety detection device, a vehicle weight detection device and a vehicle pressure detection device; The vehicle dimension safety detection device comprises a pass gate arranged along the width direction of a driving road surface, the pass gate comprises two vertical rods vertically arranged on two sides, the distance between the two vertical rods is larger than the vehicle safety width threshold value, the pass gate further comprises a height limiting rod horizontally arranged above the two vertical rods, the height limiting rod is located at the position of the vehicle safety height threshold value, a row of