Intelligent manhole cover safety monitoring and early warning device

Abstract

The utility model relates to a manhole cover technical field, concretely is a kind of intelligent manhole cover safety monitoring and early warning device, including well lid pedestal, the well lid pedestal one side upper end rotationally installed well lid, it is connected between the well lid and well lid pedestal by hinge, and the side edge of well lid pedestal is provided with damping protection assembly;The damping protection assembly includes hydraulic cylinder fixedly installed in the lower end of well lid pedestal side edge, the inside sliding installation of hydraulic cylinder has compression plug, the upper end surface of compression plug is fixedly installed with buffer rod, and the bottom end side wall of hydraulic cylinder is fixedly connected with the communicating hydraulic pipe of intercommunication. The utility model when well lid is closed after being rolled by wheel, and hydraulic buffering structure disperses impact force by liquid flow: liquid in hydraulic cylinder is extruded and flows to adjacent hydraulic cylinder by communicating hydraulic pipe, converts single-point impact force into multi-zone buffering, reduces well lid local stress peak.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, specifically an intelligent manhole cover safety monitoring and early warning device. Background Technology

[0002] The intelligent manhole cover safety monitoring and early warning device is a smart device built on Internet of Things (IoT) technology, playing a crucial role in ensuring the safety of urban infrastructure. It can monitor the status of manhole covers and the underground environment in real time and accurately, promptly detecting and warning of various safety hazards, thereby ensuring the stable operation of urban infrastructure and safeguarding the safety of citizens' travel.

[0003] A search revealed an online monitoring device and system for manhole covers with application number 201720106475.8. The device is embedded within the manhole cover. The online monitoring device includes a controller, a clock chip, a GPS module, a GPRS module, a power module, and a reed switch. The clock chip, GPS module, GPRS module, power module, and reed switch are electrically connected to the controller. The power module is also electrically connected to the clock chip and the reed switch. The power module supplies power to the online monitoring device when it receives a first signal or when the reed switch is turned on. This invention effectively monitors and manages the status of manhole covers by controlling the on / off state of the reed switch and the timed monitoring by the clock chip. It can promptly detect damage or loss of manhole covers, improve the traceability management of manhole covers, further maintain road safety, and reduce management costs.

[0004] However, the above-mentioned technical solutions have also revealed some problems in practical applications. Since manhole covers are typically installed on roads and other major traffic arteries, they are subjected to long-term pressure, vibration, and impact from vehicles. The sensors embedded within them are highly susceptible to damage under such harsh conditions. Once the sensors are damaged, the entire monitoring system will malfunction, failing to obtain timely and accurate status information about the manhole covers, thus increasing safety hazards and affecting the efficiency of manhole cover management. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing technology has the problem that manhole covers are usually installed on roads and other major traffic arteries, and are subjected to the pressure, vibration and impact of vehicles for a long time, the sensors embedded in them are very easy to be damaged in such harsh environments.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A smart manhole cover safety monitoring and early warning device includes a manhole cover base, a manhole cover is rotatably installed on the upper side of one side of the manhole cover base, the manhole cover and the manhole cover base are connected by a hinge, and a shock-absorbing and protective component is provided on the side edge of the manhole cover base.

[0009] The shock absorption and protection assembly includes a hydraulic cylinder fixedly installed on the lower side of the manhole cover base. A compression plug is slidably installed inside the hydraulic cylinder, and a buffer rod is fixedly installed on the upper end face of the compression plug. A connecting hydraulic pipe is fixedly connected to the bottom side wall of the hydraulic cylinder.

[0010] As a further embodiment of this utility model: an electric telescopic rod is hinged to the inner rear side wall of the manhole cover base, the telescopic end of the electric telescopic rod is hinged to the manhole cover, and an auxiliary support rod is rotatably installed on the inner side wall of the manhole cover base.

[0011] As a further improvement of this utility model: three sets of protective covers are fixedly installed on the lower end face of the manhole cover, and a flow monitoring component is installed inside the middle protective cover.

[0012] As a further embodiment of this utility model: the flow monitoring component includes an H2S gas sensor fixedly installed on the inner wall of the protective cover, and a flow channel is formed between the interior of the protective cover and the manhole cover.

[0013] As a further improvement of this utility model: a support frame is fixedly installed on the inner wall of the protective cover, and a fan is fixedly installed in the middle of the support frame.

[0014] As a further improvement of this utility model: a monitoring and early warning component is provided inside the protective cover on both sides, and the monitoring and early warning component includes a power supply fixedly installed inside the protective cover.

[0015] As a further improvement of this utility model: a controller is fixedly installed inside the protective cover, and the signal output terminal of the controller is electrically connected to an NB-IoT communication unit.

[0016] As a further embodiment of this utility model: a vibration sensor is fixedly installed inside another protective cover, and a liquid level sensor penetrating the protective cover is provided on one side of the vibration sensor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] When a manhole cover is closed and subjected to wheel pressure, the hydraulic buffer structure disperses the impact force through fluid flow: the fluid in the hydraulic cylinder is compressed and flows to adjacent hydraulic cylinders through connecting hydraulic pipes, transforming the single-point impact force into multi-area buffering, reducing the local peak force on the manhole cover; the damping effect of the fluid flow absorbs vibration energy, reducing rigid collisions between the manhole cover and the base, and extending the service life of the manhole cover and monitoring device. The buffering effect of the hydraulic system reduces false alarms caused by impacts in the monitoring device: when a vehicle runs over the manhole cover, the hydraulic structure absorbs most of the impact force first, reducing the amplitude of displacement or tilt angle changes detected by the sensor, avoiding misjudgment of "abnormal opening of the manhole cover" due to instantaneous vibration, and improving the accuracy of early warning. If a leak occurs in the hydraulic system, such as a ruptured connecting hydraulic pipe, the buffering effect will decrease. In this case, the monitoring system can identify the fault through abnormal sensor data, such as sudden changes in impact force or increased vibration frequency of the manhole cover, and automatically generate a maintenance work order, realizing closed-loop management of "structural damage - system early warning". Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an intelligent manhole cover safety monitoring and early warning device;

[0020] Figure 2 A schematic diagram of the internal structure of a smart manhole cover safety monitoring and early warning device.

[0021] Figure 3 A schematic diagram of the structure of an auxiliary component for extracting a smart manhole cover safety monitoring and early warning device;

[0022] Figure 4 This is a schematic diagram of the structure of a filter emission component for a smart manhole cover safety monitoring and early warning device;

[0023] Figure 5 This is a schematic diagram of the internal structure of the filter emission component of an intelligent manhole cover safety monitoring and early warning device.

[0024] In the diagram: 1. Manhole cover base; 2. Manhole cover; 3. Hinge; 4. Electric telescopic rod; 5. Shock absorption and protection assembly; 501. Hydraulic cylinder; 502. Buffer rod; 503. Connecting hydraulic pipe; 504. Compression plug; 6. Protective cover; 7. Auxiliary support rod; 8. Flow monitoring assembly; 801. Flow channel; 802. Support frame; 803. Fan; 804. H2S gas sensor; 9. Monitoring and early warning assembly; 901. Power supply; 902. Controller; 903. NB-IoT communication unit; 904. Liquid level sensor; 905. Vibration sensor. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0028] Example 1:

[0029] Please see Figures 1-3 This is the first embodiment of the present utility model.

[0030] This embodiment provides an intelligent manhole cover safety monitoring and early warning device, including a manhole cover base 1, a manhole cover 2 rotatably mounted on the upper side of the manhole cover base 1, the manhole cover 2 and the manhole cover base 1 being connected by a hinge 3, and a shock-absorbing and protective component 5 being provided on the side edge of the manhole cover base 1; the shock-absorbing and protective component 5 includes a hydraulic cylinder 501 fixedly mounted on the lower side edge of the manhole cover base 1, a compression plug 504 slidably mounted inside the hydraulic cylinder 501, a fixedly mounted upper end face of the compression plug 504, and a connecting hydraulic pipe 503 fixedly connected to the bottom side wall of the hydraulic cylinder 501.

[0031] Specifically, an electric telescopic rod 4 is hinged to the inner rear side wall of the manhole cover base 1, and the telescopic end of the electric telescopic rod 4 is hinged to the manhole cover 2. An auxiliary support rod 7 is rotatably installed on the inner side wall of the manhole cover base 1.

[0032] Furthermore, the auxiliary support rod 7 is fixed to the inner wall of the manhole cover base 1 with bolts. The fixed support of the auxiliary support rod 7 prevents the manhole cover 2 from closing abnormally. The auxiliary support rod 7 can be rotated to adjust the contact angle. After being fixed with bolts, the manhole cover 2 can be stably supported at any opening angle, such as 30° or 60°, avoiding the angle deviation caused by wind or external force collisions after the traditional manhole cover 2 is opened, which facilitates underground operations.

[0033] Specifically, three sets of protective covers 6 are fixedly installed on the lower end face of the manhole cover 2. The middle protective cover 6 is equipped with a flow monitoring component 8. The flow monitoring component 8 includes an H2S gas sensor 804 fixedly installed on the inner wall of the protective cover 6. A flow channel 801 is formed between the inside of the protective cover 6 and the manhole cover 2. A support frame 802 is fixedly installed on the inner wall of the protective cover 6. A fan 803 is fixedly installed in the middle of the support frame 802.

[0034] Furthermore, the fan 803 allows the airflow in the manhole to circulate in the flow channel 801, which facilitates the flow of gas through the H2S gas sensor 804, enabling the H2S in the manhole to be detected by the H2S gas sensor 804.

[0035] In use, the electric telescopic rod 4 is activated, which pushes the manhole cover 2. The manhole cover 2 can rotate and open on the manhole cover base 1 via the hinge 3. At the same time, the auxiliary support rod 7 is rotated, and the auxiliary support rod 7 can rotate to a suitable position to abut against the manhole cover 2. When the abutment angle is appropriate, it is fixed with bolts. The fixed support of the auxiliary support rod 7 prevents the manhole cover 2 from closing abnormally. When the manhole cover 2 is closed, if it is run over by a vehicle, the manhole cover 2 is compressed, and the force is transmitted to the buffer rod 502. After being compressed, the buffer rod 502 can absorb the force. The fluid is transferred to the compression plug 504, which, upon receiving compression, compresses the fluid inside the hydraulic cylinder 501. This forces the fluid into the connecting hydraulic pipe 503, which then transports the fluid to adjacent hydraulic cylinders 501. This fluid flow achieves a buffering and shock-absorbing effect. The fan 803 is activated, allowing the airflow in the manhole to circulate through the flow channel 801. This facilitates the flow of gas through the H2S gas sensor 804, enabling the H2S in the manhole to be detected.

[0036] In summary, when manhole cover 2 is closed and subjected to wheel pressure, the hydraulic buffer structure disperses the impact force through fluid flow: the fluid in hydraulic cylinder 501 is squeezed and flows to adjacent hydraulic cylinders 501 through connecting hydraulic pipe 503, transforming the single-point impact force into multi-area buffering, reducing the local peak force on manhole cover 2; the damping effect of the fluid flow absorbs vibration energy, reducing rigid collisions between manhole cover 2 and the base, and extending the service life of manhole cover 2 and the monitoring device. The buffering effect of the hydraulic system can reduce false alarms caused by impacts in the monitoring device: when a vehicle runs over manhole cover 2, the hydraulic structure absorbs most of the impact force first, reducing the amplitude of displacement or tilt angle changes detected by the sensor, avoiding misjudgment of "abnormal opening of manhole cover 2" due to instantaneous vibration, and improving the accuracy of early warning. If a leak occurs in the hydraulic system, such as a rupture of connecting hydraulic pipe 503, the buffering effect will decrease. At this time, the monitoring system can identify the fault through abnormal sensor data, such as sudden changes in impact force or increased vibration frequency of manhole cover 2, and automatically generate a maintenance work order to achieve closed-loop management of "structural damage - system early warning".

[0037] Example 2:

[0038] Please see Figures 1-5 This is the second embodiment of the present utility model.

[0039] Specifically, monitoring and early warning components 9 are installed inside the protective covers 6 on both sides. The monitoring and early warning components 9 include a power supply 901 fixedly installed inside the protective cover 6, a controller 902 fixedly installed inside the protective cover 6, and the signal output terminal of the controller 902 electrically connected to an NB-IoT communication unit 903. A vibration sensor 905 is fixedly installed inside the other protective cover 6, and a liquid level sensor 904 penetrating the protective cover 6 is provided on one side of the vibration sensor 905.

[0040] Furthermore, the vibration sensor 905 and the liquid level sensor 904 are electrically connected to the controller 902 via wires. The NB-IoT communication unit 903 can monitor data such as the liquid level and toxic gas concentration in the well in real time, and push alarms to the management platform when abnormalities occur.

[0041] In use, the power supply 901 can provide power to the internal electrical equipment. The vibration sensor 905 and the liquid level sensor 904 can monitor the abnormal vibration of the well cover 2 and the changes in the liquid level in the well. The data can be transmitted to the controller 902. At the same time, the NB-IoT communication unit 903 can monitor the liquid level in the well and the concentration of toxic gases in real time. When there is an abnormality, an alarm will be pushed to the management platform.

[0042] In summary, this system, through the combined design of "power supply 901, multi-sensor monitoring and NB-IoT communication", constructs a closed-loop system of "sensing, transmission, decision-making and execution", which not only solves the pain points of traditional manhole covers being "invisible and uncontrollable", but also provides underlying support for the digital and intelligent management of urban infrastructure.

[0043] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​such as temperature, pressure, etc., installation arrangements, use of materials, color, orientation, etc. For instance, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this utility model. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0044] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0045] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A smart manhole cover safety monitoring and early warning device, comprising a manhole cover base (1), characterized in that: A manhole cover (2) is rotatably installed on the upper side of one side of the manhole cover base (1). The manhole cover (2) and the manhole cover base (1) are connected by a hinge (3). A shock-absorbing and protective component (5) is provided on the side edge of the manhole cover base (1). The shock absorption and protection component (5) includes a hydraulic cylinder (501) fixedly installed on the lower side of the manhole cover base (1). A compression plug (504) is slidably installed inside the hydraulic cylinder (501). A buffer rod (502) is fixedly installed on the upper end face of the compression plug (504). A connecting hydraulic pipe (503) is fixedly connected to the bottom side wall of the hydraulic cylinder (501).

2. The intelligent manhole cover safety monitoring and early warning device according to claim 1, characterized in that: An electric telescopic rod (4) is hinged to the inner rear side wall of the manhole cover base (1). The telescopic end of the electric telescopic rod (4) is hinged to the manhole cover (2). An auxiliary support rod (7) is rotatably installed on the inner side wall of the manhole cover base (1).

3. The intelligent manhole cover safety monitoring and early warning device according to claim 1, characterized in that: Three sets of protective covers (6) are fixedly installed on the lower end face of the manhole cover (2), and a flow monitoring component (8) is installed inside the protective cover (6) in the middle position.

4. The intelligent manhole cover safety monitoring and early warning device according to claim 3, characterized in that: The flow monitoring component (8) includes an H2S gas sensor (804) fixedly installed on the inner wall of the protective cover (6), and a flow channel (801) is formed between the interior of the protective cover (6) and the well cover (2).

5. The intelligent manhole cover safety monitoring and early warning device according to claim 4, characterized in that: A support frame (802) is fixedly installed on the inner wall of the protective cover (6), and a fan (803) is fixedly installed in the middle of the support frame (802).

6. The intelligent manhole cover safety monitoring and early warning device according to claim 3, characterized in that: The protective covers (6) on both sides are equipped with monitoring and early warning components (9), which include a power supply (901) fixedly installed inside the protective cover (6).

7. The intelligent manhole cover safety monitoring and early warning device according to claim 6, characterized in that: The protective cover (6) has a controller (902) fixedly installed inside, and the signal output terminal of the controller (902) is electrically connected to an NB-IoT communication unit (903).

8. The intelligent manhole cover safety monitoring and early warning device according to claim 7, characterized in that: Another protective cover (6) is fixedly installed inside a vibration sensor (905), and a liquid level sensor (904) penetrating the protective cover (6) is provided on one side of the vibration sensor (905).

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