Simple sensing alarm device for bridge

Abstract

The utility model discloses a simple sensing alarm device for a bridge, and belongs to the technical field of bridge safety monitoring. The simple sensing alarm device for the bridge senses the state change of a bridge body through a cable and is realized through a relay: when the cable is broken, a coil loses power, and a corresponding normally-closed contact is closed, so that a power supply line of alarm equipment is conducted, and the alarm equipment is started to send out a warning signal; when the cable is broken, the power supply line of the alarm device is conducted, and the effect of timely early warning is achieved; the piers are monitored through the inclinometer, graded early warning is carried out according to the inclination angle condition, and the early warning accuracy is guaranteed. And the comprehensiveness of bridge monitoring is guaranteed by monitoring the main beams and the bridge piers. The alarm device is simple in structure and low in cost, can accurately and timely respond to the extreme conditions of the bridge, and improves the driving safety of the highway bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge safety monitoring, and in particular relates to a simple sensing alarm device for bridges. Background Art

[0002] As my country's bridges age, coupled with the accumulation of adverse factors such as overloading, many have shown varying degrees of damage. In extreme cases, such as natural disasters like floods and mudslides, bridge collapses are common, posing a significant threat to traffic safety. Existing bridge early warning systems often rely on complex, specialized monitoring equipment, resulting in complex structures, high construction and maintenance costs, and limited widespread adoption.

[0003] In summary, existing bridge alarm devices have the problems of high cost and difficulty in maintenance. Utility Model Content

[0004] The technical problem to be solved by the present invention is to provide a simple bridge sensing alarm device in response to the deficiencies in the above-mentioned existing technologies. The device has a simple structure, low cost, can accurately and promptly respond to extreme conditions of the bridge, and improves the driving safety of highway bridges.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A simple bridge sensing alarm device includes a relay, a cable, a power supply, an alarm device, an inclinometer installed on a bridge pier, and an early warning device. The relay includes a normally closed contact and a coil. The normally closed contact is connected in series to the power supply line of the alarm device, and the coil is connected in series to the cable.

[0007] The cables are used to sense the fracture of the main beam, and the cables include cables arranged longitudinally along the outside of the guardrails on both sides of the bridge and cables arranged transversely on the bottom plate of the main beam;

[0008] The inclinometer is used to obtain the inclination data of the bridge pier, and the early warning device issues an early warning based on the inclination data; the power supply is also connected to the early warning device for power supply.

[0009] Furthermore, the alarm device and the early warning device both include flashing lights, and the early warning device also includes a warning sign.

[0010] Furthermore, it also includes a PVC tube, which is used to wrap the cable. The PVC tube is fixed to the bridge body using expansion bolts at each set length, and the set length range is [2m, 4m].

[0011] Furthermore, the power supply includes a solar power supply system, and the solar power supply system includes a battery for storing electrical energy of the solar power supply system.

[0012] Further, it also includes a signal pole disposed at a set distance from one side of the bridge body. The power supply, the warning device, and the alarm device are all fixed on the signal pole, and the set distance ranges from [40m, 60m].

[0013] Further, it also includes a 4G module for sending the detection data and the warning data to the bridge management center.

[0014] The utility model has the following advantages compared with the prior art:

[0015] The simple bridge perception and alarm device of the utility model senses the change of the bridge body through a cable and realizes through a relay: when the cable breaks, the coil loses power, and the corresponding normally closed contact closes, so that the power supply line of the alarm device is turned on, and the alarm device starts to emit a warning signal; when the power supply line of the alarm device is turned on after the cable breaks, it plays an effect of timely warning; the monitoring of the bridge pier is realized through an inclinometer, and hierarchical warning is carried out according to the inclination situation to ensure the accuracy of the warning. Through the monitoring of the bridge body and the bridge pier, the comprehensiveness of the bridge monitoring is ensured. The alarm device has a simple structure, low cost, can accurately and timely respond to extreme bridge conditions, and improves the driving safety of highway bridges.

[0016] The technical solution of the utility model will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the simple bridge perception and alarm device of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of a partial bridge body of an embodiment of the simple bridge perception and alarm device of the utility model;

[0019] Figure 3 It is a schematic diagram of the bridge body collapse of an embodiment of the simple bridge perception and alarm device of the utility model;

[0020] Figure 4 It is a partial schematic diagram of the cable of an embodiment of the simple bridge perception and alarm device of the utility model;

[0021] Description of the Reference Numerals:

[0022] 1. Guardrail; 2. Cable; 3. Main beam; 4. Expansion bolt; 5. Flashing light; 6. PVC pipe;

[0023] 7. Signal pole; 8. Inclinometer; 9. Storage battery; 10. Solar power supply system. Specific Embodiments

[0024] Embodiment of the simple bridge perception and alarm device:

[0025] AsFigures 1-4 As shown in Figures 1-4 , the simple bridge perception and alarm device includes a relay, a cable 2, a power supply, an alarm device, an inclinometer 8 installed on the bridge pier, and a warning device. The relay includes a normally closed contact and a coil. The normally closed contact is connected in series on the power supply line of the alarm device, and the coil is connected in series on the cable. When the cable 2 breaks, the coil loses power, and the corresponding normally closed contact closes, making the power supply line of the alarm device conductive, and the alarm device starts to emit a warning signal.

[0026] Specifically, the cable 2 is used to sense the fracture condition of the main girder. The above-mentioned cable 2 includes a cable 2 longitudinally arranged outside the guardrails 1 on both sides of the bridge and a cable 2 transversely arranged on the bottom plate of the main girder 3. That is, when the bridge breaks longitudinally and transversely, it will cause the cable 2 to break. Equivalently, the cable 2, as a sensing device, can sense and monitor the fracture condition of the bridge body. In addition, only the transmission of electrical signals is required between the alarm device and the sensing device, without the process of converting electrical signals - analog signals - electrical signals. This ensures the timeliness of the alarm and improves the efficiency of the alarm.

[0027] As the supporting structure of the bridge body, when the bridge pier is inclined, it will cause abnormal conditions such as fracture of the bridge body. Therefore, the bridge alarm device should not only monitor the main girder but also monitor the bridge pier to ensure the comprehensiveness of detection and the reliability of early warning. Specifically, the inclinometer 8 is used to obtain the inclination data of the bridge pier, and the above-mentioned warning device gives an early warning according to the inclination data. The above power supply is also connected to the warning device for power supply. For the convenience of installation, both the alarm device and the warning device include a flashing light 5, and the warning device also includes a warning sign. The warning device realizes a better warning effect through the combination of the flashing light 5 and the warning sign. The flashing light 5 works to play a warning role, reminding the driver that the road ahead is dangerous, and the warning sign has the word "stop" written on it to prevent the driver from continuing to move forward.

[0028] Because different inclination conditions of the bridge pier correspond to different danger coefficients, in order to ensure the accuracy of early warning, the early warning here can adopt a hierarchical early warning method. Different levels of early warning operations can be set according to the actual situation; for example, in the first-level early warning, when the inclination angle of the bridge pier reaches the early warning value, the 4G module sends the corresponding data to the bridge management center, and the bridge management center dispatches professional maintenance personnel to the site for verification. If no potential safety hazards are found, the warning is turned off. In the second-level early warning, the flashing light 5 is started, and the 4G module sends the data to the management center. The management center organizes traffic control, takes partial control measures, prepares to close the traffic, and plans corresponding reinforcement and renovation measures. In the third-level early warning, the flashing light 5 is started, and the stop sign lights up; the 4G module transmits the data situation to the management center, and the management center organizes the closure of the traffic and releases information to the outside.

[0029] As Figure 4As shown in the figure, in order to prevent the cable 2 from being damaged by the external environment, which may lead to false alarms; the alarm device further includes a PVC pipe 6. The above-mentioned PVC pipe 6 is used to wrap the cable 2. The PVC pipe 6 is fixed to the bridge body by expansion bolts 4 at every set length, ensuring the reliability of the alarm. The set length ranges from [2m, 4m], and preferably the set length is 3m. In addition, the PVC pipe 6 can also provide protection for the cable 2 to prevent the cable 2 from aging. The purpose of using the expansion bolts 4 is to simply and effectively fix the cable 2 on the main beam 3. This method has a fast construction speed and a simple construction process.

[0030] Since the power consumption of the warning device is not large, the power supply includes a solar power supply system 10. The solar power supply system 10 includes a storage battery 9 for storing the electric energy of the solar power supply system 10. Such a setting eliminates the need for additional wiring for the alarm device, improving the installation convenience of the alarm device. During the day, the solar power supply system 10 generates electric energy through the photovoltaic effect, and the generated electric energy is stored in the storage battery 9 at the bottom of the strobe light 5 to provide electric energy for the warning device, achieving sustainable development while being adaptable to most scenarios with inconvenient power supply such as mountainous areas.

[0031] For the convenience of installation, the alarm device further includes a signal pole 7 set at a set distance from one side of the bridge body. The above-mentioned power supply, warning equipment and alarm equipment are all fixed on the signal pole 7. The set distance ranges from [40m, 60m]. Preferably, the set distance is 50m.

[0032] For the convenience of communication, it further includes a 4G module for sending detection data and warning data to the bridge management center.

[0033] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A simple bridge sensing and alarming device, characterized in that: It includes a relay, a cable (2), a power supply, an alarm device, an inclinometer (8) installed on the bridge pier, and a warning device. The relay includes a normally closed contact and a coil. The normally closed contact is connected in series on the power supply line of the alarm device, and the coil is connected in series on the cable. The cable (2) is used to sense the fracture condition of the main beam. The cable (2) includes a cable (2) longitudinally arranged on the outer sides of the bridge side guards (1) along both sides of the bridge and a cable (2) horizontally arranged on the bottom plate of the main beam (3). The inclinometer (8) is used to obtain the inclination data of the bridge pier, and the warning device gives a warning according to the inclination data. The power supply is also connected to the warning device for power supply.

2. The simple bridge perception and alarm device according to claim 1, characterized in that: Both the alarm device and the warning device include a strobe light (5), and the warning device also includes a warning sign.

3. The simple bridge perception and alarm device according to claim 1, characterized in that: It also includes a PVC pipe (6). The PVC pipe (6) is used to wrap the cable (2). The PVC pipe (6) is fixed to the bridge body with expansion bolts (4) at every set length, and the set length ranges from [2m, 4m].

4. A simple bridge perception alarm device according to claim 1, characterized in that: The power supply includes a solar power supply system (10), and the solar power supply system (10) includes a storage battery (9) for storing the electric energy of the solar power supply system (10).

5. A simple bridge perception and alarm device according to claim 1, characterized in that: It also includes a signal pole (7) arranged at a set distance from one side of the bridge body. The power supply, the warning device, and the alarm device are all fixed on the signal pole (7), and the set distance ranges from [40m, 60m].

6. A simple bridge perception and alarm device according to claim 1, characterized in that: It also includes a 4G module for sending the detection data and the warning data to the bridge management center.

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