A monitoring instrument for detecting abnormal movement of a manhole cover

Abstract

The utility model relates to a kind of well lid abnormal motion monitoring instrument. One end of vertical rod is equipped with compression spring, when well lid is covered, compression spring is compressed, the pressing plate of other end of vertical rod and button switch separate, switch is turned off;When well lid is opened, compression spring lifts vertical rod, pressing plate presses button switch, and switch is closed.Monitoring instrument equipment and well lid are not hard connected, and the installation position of monitoring instrument is adjustable, without strict position requirement.When master control circuit detects that switch is closed, signal is sent to control background in time.The utility model has clever design, novel design, simple structure, controllable cost, and can monitor well lid abnormal motion condition well.

Description

Technical Field

[0001] This utility model relates to a manhole cover anomaly monitoring device. Background Technology

[0002] This utility model relates to the field of gas detection technology, specifically a manhole cover agitation monitor. Gas valve well covers are prone to various uncontrollable factors, such as loss, damage, or unauthorized opening, leading to numerous dangerous accidents. Existing technologies mostly involve installing or fixing the manhole cover agitation monitoring device to the back of the cover, connecting it to the control circuit via Bluetooth or wires. In this case, if on a main road with heavy traffic, the frequent vibrations of the manhole cover can easily cause the device to fall off. Even outside of main roads, the device is easily affected by temperature, such as summer sun exposure or winter damp and cold conditions, leading to malfunctions. Therefore, there are still shortcomings in the process of monitoring manhole cover agitation. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of this utility model is to provide a technical solution for a manhole cover anomaly monitoring device.

[0004] The aforementioned manhole cover anomaly monitoring device is characterized by comprising: A mounting bracket is used to fix the monitoring instrument to the well wall; The crossbeam is connected to the fixed bracket; A vertical rod is inserted through the horizontal beam, and its upper end is provided with a disc structure for contacting the bottom surface of the manhole cover; A compression spring is sleeved on the vertical rod and located between the disc structure and the crossbeam; A push-button switch is installed on the lower end face of the crossbeam; A pressure plate is fixed to the lower end of the vertical rod; The main control circuit control box is installed on the lower end face of the crossbeam and contains the main control circuit and battery. When the manhole cover is closed, the compression spring is compressed, the pressure plate separates from the push button switch, and the switch is in the open state; when the manhole cover is opened, the compression spring pushes the vertical rod upward, the pressure plate presses the push button switch to close, the main control circuit detects the switch closure signal and sends it to the control backend.

[0005] The manhole cover anomaly monitoring device is characterized in that a rubber pressure plate is provided above the pressure plate to provide elastic buffer when the pressure plate contacts the button switch.

[0006] The manhole cover movement monitoring device is characterized in that the fixed bracket has three through holes, the middle through hole is used to connect with the crossbeam, and the two through holes on both sides are used to fix it to the manhole wall by expansion bolts.

[0007] The aforementioned manhole cover anomaly monitoring device is characterized in that the crossbeam and the fixed bracket are connected by a plum nut.

[0008] The manhole cover anomaly monitoring device is characterized in that the main control circuit and the push-button switch are connected by wires.

[0009] The manhole cover anomaly monitoring device is characterized in that the vertical rod passes through the through hole of the crossbeam, and a rubber pressure plate and a pressure plate are installed sequentially at the lower end of the vertical rod.

[0010] The manhole cover anomaly monitoring device is characterized in that its components are made of waterproof material.

[0011] The manhole cover anomaly monitoring device is characterized in that the compression spring is in a compressed state when the manhole cover is closed, and releases elastic potential energy to push the vertical rod upward when the manhole cover is opened.

[0012] This utility model's monitoring device has no rigid connection to the manhole cover, and its installation position is adjustable, without strict positional requirements. When the manhole cover is normally closed, it presses down on the upper end of the vertical rod, causing the compression spring to depress and the switch to open. When the manhole cover is opened, the compression spring lifts the vertical rod, and the rubber pressure plate presses down on the switch, closing it. Once the main control circuit detects the switch closure, it promptly sends a signal to the control backend. This utility model is installed on the manhole wall rather than the manhole cover, minimizing the influence of external temperature on the monitoring device and preventing it from falling off due to manhole cover vibration or false alarms. It is ingeniously conceived, novelly designed, simply structured, and cost-effective, and can effectively monitor abnormal manhole cover movement. Attached Figure Description

[0013] Figure 1 This is a top view of the present invention; Figure 2 This is a cross-sectional view of the manhole cover of this utility model in the open state after it has been closed; Figure 3 This is a cross-sectional view of the manhole cover of this utility model in the closed state after the switch is opened; In the diagram: 1-Fixed bracket; 2-Crossbeam; 3-Button switch; 4-Compression spring; 5-Vertical rod; 6-Rubber pressure plate; 7-Pressure plate; 8-Main control circuit; 9-Battery; 10-Main control circuit control box; 11-Plume nut; 12-Well wall; 13-Well cover. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings: This utility model proposes a manhole cover anomaly monitoring device, such as... Figure 1 , Figure 2As shown, it consists of a fixed bracket 1, a crossbeam 2, a push-button switch 3, a compression spring 4, a vertical rod 5, a rubber pressure plate 6, a pressure plate 7, a main control circuit 8, a battery 9, a main control circuit control box 10, and a plum nut 11.

[0015] The fixed bracket 1 is fixed to the well wall 12. One end of the crossbeam 2 is fixed through the through hole of the fixed bracket 1. The main control circuit control box 10 and the push button switch 3 are installed on the lower end face of the crossbeam 2. The main control circuit control box 10 is equipped with the main control circuit 8 and the battery 9. A vertical rod 5 is inserted through the crossbeam 2. The vertical rod 5 includes a rod body and an upper disc. The upper surface of the upper disc contacts the bottom surface of the well cover 13. A pressure plate 7 is fixed at the lower end of the vertical rod 5. The pressure plate 7 is circular and can cover the push button switch 3 after it rises. One end of the compression spring 4 is placed on the lower surface of the disc at the upper end of the vertical rod 5, and the other end is placed on the crossbeam 2. When the well cover is closed normally, the compression spring 4 is in a compressed state.

[0016] The fixed bracket 1 has three through holes. During installation, expansion bolts are used to pass through the two through holes at both ends to connect and fix the fixed bracket 1 to the well wall. The middle through hole is connected to the crossbeam 2 through a nut to keep the crossbeam 2 horizontal. Preferably, the middle through hole is connected and fastened with a plum nut 11 to facilitate disassembly and installation.

[0017] Furthermore, a rubber pressure plate 6 is installed above the pressure plate 7. When the compression spring 4 pushes up the vertical rod 5, the rubber pressure plate 6 is in contact with the button switch 3, so that there is an elastic buffer between the button switch 3 and the pressure plate 7, preventing the pressure plate 7 from directly pressing and damaging the button switch 3.

[0018] In this invention, all components are made of waterproof materials.

[0019] During installation, first install the main control circuit 8 and battery 9 inside the main control circuit control box 10. Fix the main control circuit control box 10 to the lower end face of the crossbeam 2. Install the push-button switch 3 on the crossbeam 2 and connect the push-button switch 3 and the main control circuit 8 with a wire. Thread the compression spring 4 onto the vertical rod 5, and then insert the rod of the vertical rod 5 into the through hole of the crossbeam 2. Install the rubber pressure plate 6 and pressure plate 7 sequentially at the lower end of the vertical rod 5. Figure 2 As shown, when the manhole cover is closed, the weight of the manhole cover overcomes the spring force of the spring 4 and presses down on the upper end of the vertical rod 5, causing the vertical rod 5 to press down, the rubber pressure plate 6 and the push button switch 3 to separate, and the push button switch 3 to disconnect.

[0020] When the manhole cover is moved (e.g., pried open, displaced, or damaged), such as Figure 3As shown, the downward pressure of the manhole cover on the vertical rod 5 decreases or disappears, the compression spring 4 releases its elastic potential energy, the vertical rod 5 moves upward rapidly under the action of the spring force, the rubber pressure plate 6 rises and presses the button switch 3, the button switch 3 closes, the button switch 3 is connected to the main control circuit 8 through a wire, the main control circuit 8 integrates a signal detection interface and an output module, which is used to transmit the closing signal of the button switch 3 to the control background.

[0021] This invention features a compression spring installed at one end of a vertical rod. When the manhole cover is closed, the spring is compressed, separating the pressure plate and push-button switch at the other end of the rod, thus disengaging the switch. When the manhole cover is opened, the spring lifts the rod, and the pressure plate presses against the push-button switch, closing it. The monitoring device and the manhole cover are not rigidly connected, and the device's installation position is adjustable, without strict positional requirements. When the main control circuit detects the switch closure, it promptly sends a signal to the control backend. This invention is ingeniously conceived, novelly designed, simple in structure, and cost-effective, and can effectively monitor abnormal manhole cover movement.

Claims

1. A manhole cover movement monitoring device, characterized in that, include: A fixed bracket (1) is used to fix the monitoring instrument to the well wall (12). The crossbeam (2) is connected to the fixed bracket (1); A vertical rod (5) is inserted through the crossbeam (2), and its upper end is provided with a disc structure for contacting the bottom surface of the manhole cover (13); A compression spring (4) is sleeved on the vertical rod (5) and located between the disc structure and the crossbeam (2); A push-button switch (3) is installed on the lower end face of the crossbeam (2); The pressure plate (7) is fixed to the lower end of the vertical rod (5); The main control circuit control box (10) is installed on the lower end face of the crossbeam (2) and contains the main control circuit (8) and battery (9).

2. The manhole cover anomaly monitoring device according to claim 1, characterized in that... A rubber pressure plate (6) is also provided above the pressure plate (7) to provide elastic cushioning when the pressure plate (7) contacts the push button switch (3).

3. The manhole cover anomaly monitoring device according to claim 1, characterized in that... The fixed bracket (1) has three through holes. The middle through hole is used to connect with the crossbeam (2), and the two through holes on both sides are used to fix it to the well wall (12) by expansion bolts.

4. The manhole cover anomaly monitoring device according to claim 3, characterized in that... The crossbeam (2) is connected to the fixed bracket (1) by a plum nut (11).

5. The manhole cover anomaly monitoring device according to claim 1, characterized in that... The main control circuit (8) and the push-button switch (3) are connected by wires.

6. The manhole cover anomaly monitoring device according to claim 1, characterized in that... The vertical rod (5) passes through the through hole of the crossbeam (2), and the lower end of the vertical rod (5) is sequentially fitted with a rubber pressure plate (6) and a pressure plate (7).

7. The manhole cover anomaly monitoring device according to claim 1, characterized in that... The components of the monitoring device are made of waterproof materials.

8. The manhole cover anomaly monitoring device according to claim 1, characterized in that... The compression spring (4) is in a compressed state when the manhole cover is closed, and releases elastic potential energy to push the vertical rod (5) upward when the manhole cover is opened.

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