A device for monitoring opening of manhole cover

Abstract

The utility model relates to the technical field of manhole cover opening monitoring, specifically a device for manhole cover opening monitoring, comprising: a manhole cover; a monitoring device, the surface of which is arranged at the top of the manhole cover; wherein the monitoring device comprises an opening monitoring alarm arranged at the top of the manhole cover, both sides of which are fixedly connected with mounting blocks, the inner wall of the mounting block is threadedly connected with screws, and the lower end of the surface of the screw is threadedly connected to the inner wall of the manhole cover; the device utilizes mounting blocks and sealing plates to wrap the surface of the screws, thereby preventing water vapor from adhering to the surface of the screws, thereby avoiding rusting of the screws and ensuring the convenience of disassembling the opening monitoring alarm on the manhole cover for maintenance. The spring and the limit frame are utilized to achieve a stable clamping connection of the sealing plate on the top of the mounting block, avoiding the loosening phenomenon between the sealing plate and the mounting block, and improving the protection effect of the screws.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover opening monitoring, in particular to a device for manhole cover opening monitoring. Background Art

[0002] Manhole covers are used to cover sewers, drains or other underground facilities, usually located on roads, sidewalks or other public areas. In order to reduce the loss of manhole covers and protect underground facilities from damage, manhole covers are usually equipped with opening monitoring alarm devices. By opening the magnetic sensor in the monitoring alarm device, the vibration, displacement, tilt and other states of the manhole cover are monitored to determine whether there is an intrusion such as illegal opening of the manhole cover and issue an alarm to avoid accidental injuries or losses to pedestrians or vehicles.

[0003] After searching, the Chinese patent "An alarm device for monitoring illegal opening of intelligent manhole covers" authorization announcement number "CN214311968U" realizes the installation of the opening monitoring alarm device on the manhole cover through screws, fixing plates, L-shaped fixing seats and the first spring, which is convenient for the inspection and maintenance of the opening monitoring alarm device.

[0004] Because manhole covers are usually covered on sewers, there is heavy humidity around the manhole covers. The moisture easily adheres to the screws and springs, which can easily cause the screws and springs to rust, thereby affecting the later maintenance of the monitoring and alarm device.

[0005] Therefore, a device for monitoring the opening of a manhole cover is proposed to solve the above-mentioned problem. Utility Model Content

[0006] The purpose of the utility model is to provide a device for monitoring the opening of a manhole cover in order to solve the above-mentioned problem, thereby improving the problem that the screws and springs are prone to rust, thereby affecting the later maintenance of the monitoring alarm device.

[0007] The utility model achieves the above-mentioned purpose through the following technical solutions: a device for monitoring the opening of a manhole cover, comprising: a manhole cover; a monitoring device, the surface of which is arranged at the top of the manhole cover; wherein the monitoring device comprises an opening monitoring alarm arranged at the top of the manhole cover, both sides of the opening monitoring alarm are fixedly connected with mounting blocks, the inner wall of the mounting block is threadedly connected with screws, the lower end of the surface of the screw is threadedly connected to the inner wall of the manhole cover, the top of the mounting block is clamped with a blocking plate, the bottom end of the blocking plate is against the top of the screw, the inner wall of the blocking plate is slidably connected with a limiting frame, the surface of the limiting frame is clamped with the inner wall of the mounting block, the rear end of the limiting frame is fixedly connected with a spring, and the other end of the spring is fixedly connected to the inner wall of the blocking plate. The mounting block and the blocking plate are used to wrap the surface of the screw, thereby preventing water vapor from adhering to the surface of the screw, thereby avoiding the rusting of the screw, and ensuring the convenience of disassembling the opening monitoring alarm on the manhole cover for inspection. The spring and the limit frame are used to stably clamp the blocking plate on the top of the mounting block, thereby preventing the blocking plate from loosening from the mounting block and improving the protective effect of the screws.

[0008] Preferably, the inner wall of the blocking plate is fixedly connected with an air cylinder, the interior of the air cylinder is filled with compressed gas, the bottom end of the air cylinder is connected with an air pipe, and the lower end of the surface of the blocking plate is fixedly connected with two air bags, the inner wall of the air bag is connected with one end of the air pipe. By using the air cylinder, the air pipe and the air bag, the air bag can be extended and abutted against the inner side of the mounting block due to sufficient gas, thereby achieving water vapor blocking and improving the effect of screw wrapping and sealing.

[0009] Preferably, an air pushing rod is slidably connected to the inner wall of the air storage cylinder, and the top end of the air pushing rod penetrates and extends out of the top of the sealing plate.

[0010] Preferably, a pull rope is fixedly connected to one side of the limiting frame, and the top end of the pull rope passes through and extends out of the inner wall of the blocking plate.

[0011] Preferably, the top of the pull rope is fixedly connected with a sealing cover. By using the sealing cover and the pull rope, the limit frame is moved away from the mounting block, thereby realizing the positioning release of the blocking plate in the mounting block, and the operation of opening the monitoring alarm on the manhole cover is simple.

[0012] Preferably, a clamping block is slidably connected to the top of the blocking plate, and a surface of the clamping block is clamped to the inner wall of the sealing cover.

[0013] Preferably, the top of the push rod is fixedly connected with a connecting block, and the bottom of the clamping block contacts the top of the connecting block. The clamping block is used to limit the sealing cover and the connecting block, ensuring the stability of the plugging plate in the mounting block and preventing the plugging plate from being separated from the mounting block during use.

[0014] Preferably, the blocking plate and the sealing cover are both silicone components.

[0015] The beneficial effects of the utility model are:

[0016] 1. The mounting block and the plugging plate are used to wrap the surface of the screws, thereby preventing water vapor from adhering to the surface of the screws, thereby preventing the screws from rusting and ensuring the convenience of removing the manhole cover to open the monitoring alarm for maintenance. The spring and the limit frame are used to stably clamp the plugging plate on the top of the mounting block, preventing the plugging plate from loosening from the mounting block and improving the protection effect of the screws;

[0017] 2. By using the air cylinder, air pipe and air bag, the air bag can be stretched and pressed against the inner side of the mounting block due to sufficient gas, thereby blocking water vapor and improving the effect of wrapping and sealing the screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the monitoring device of the utility model;

[0020] Figure 3 for Figure 2 A magnified view of middle;

[0021] Figure 4 for Figure 2 Enlarged view of B.

[0022] In the figure: 1. Manhole cover; 2. Monitoring device; 21. Open monitoring alarm; 22. Mounting block; 23. Screw; 24. Sealing plate; 25. Limiting frame; 26. Spring; 27. Air bag; 28. Connecting block; 29. ​​Block; 210. Air pipe; 211. Air cylinder; 212. Push rod; 213. Pull rope; 214. Sealing cover. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] When implementing: Figure 1-4As shown, a device for monitoring the opening of a manhole cover comprises: a manhole cover 1; a monitoring device 2, wherein the surface of the monitoring device 2 is arranged on the top of the manhole cover 1; wherein the monitoring device 2 comprises an opening monitoring alarm 21 arranged on the top of the manhole cover 1, and both sides of the opening monitoring alarm 21 are fixedly connected with mounting blocks 22, the inner wall of the mounting block 22 is threadedly connected with a screw 23, the lower end of the surface of the screw 23 is threadedly connected to the inner wall of the manhole cover 1, and a sealing plate 24 is clamped on the top of the mounting block 22, the bottom end of the sealing plate 24 abuts against the top of the screw 23, the inner wall of the sealing plate 24 is slidably connected with a limiting frame 25, the surface of the limiting frame 25 is clamped on the inner wall of the mounting block 22, the rear end of the limiting frame 25 is fixedly connected with a spring 26, and the other end of the spring 26 is fixedly connected to the inner wall of the sealing plate 24.

[0025] The open monitoring alarm instrument 21 adopts ultra-low power consumption battery power supply technology, with a protection level of IP68, and can work in various harsh environments.

[0026] The mounting block 22 and the opening monitoring alarm 21 are mounted on the manhole cover 1 by screws 23, and the blocking plate 24 is pushed to be clamped in the mounting block 22, so that the bottom end of the blocking plate 24 is against the screw 23, and the screw 23 is pressed and limited. At this time, the elastic force of the spring 26 pushes the limiting frame 25 to move and be clamped in the mounting block 22, so that the blocking plate 24 is stably clamped in the mounting block 22, so that the mounting block 22 and the blocking plate 24 wrap and seal the screw 23 to prevent water vapor from adhering to the screw 23, thereby reducing the difficulty of removing the opening monitoring alarm 21 on the manhole cover 1. The power supply of the opening monitoring alarm 21 is always on. When the manhole cover 1 is maliciously opened, the magnetic sensor in the opening monitoring alarm 21 detects the change of the magnetic field, and the magnetic sensor sends a signal to the opening monitoring alarm 21 and triggers an alarm. The signal obtained by the opening monitoring alarm 21 will be sent to the background server to remind the staff to take corresponding measures in time.

[0027] like Figure 3-4As shown, the inner wall of the blocking plate 24 is fixedly connected with an air cylinder 211, the interior of the air cylinder 211 is filled with compressed gas, the bottom end of the air cylinder 211 is connected with an air pipe 210, the lower end of the surface of the blocking plate 24 is fixedly connected with two air bags 27, the inner wall of the air bag 27 is connected with one end of the air pipe 210, the inner wall of the air cylinder 211 is slidably connected with a push rod 212, the top end of the push rod 212 penetrates and extends out of the top of the blocking plate 24, and the limit frame 2 5 is fixedly connected to one side of the plug plate 24 with a pull rope 213, the top of the pull rope 213 penetrates and extends out of the inner wall of the plug plate 24, the top of the pull rope 213 is fixedly connected to the sealing cover 214, the top of the plug plate 24 is slidably connected to a block 29, the surface of the block 29 is clamped to the inner wall of the sealing cover 214, the top of the air push rod 212 is fixedly connected to a connecting block 28, the bottom of the block 29 abuts against the top of the connecting block 28, and the plug plate 24 and the sealing cover 214 are both silicone components. The top of the plug plate 24 is fixedly connected to a fixed block, the front end of the fixed block is located at the rear end of the sealing cover 214, and the surface of the block 29 is slidably connected to the inner wall of the fixed block. The air push rod 212 is a silicone component.

[0028] The sealing plate 24 is clamped in the mounting block 22, pushing the connecting block 28 downward, causing the push rod 212 to move downward in the gas cylinder 211, and causing the compressed gas in the gas cylinder 211 to flow to the two air bags 27 through the air pipe 210. The air bags 27 stretch and contact the mounting block 22 due to sufficient gas, so that the air bags 27 seal the inner wall of the mounting block 22. Since the sealing cover 214 is a silicone component, the clamping block 29 is pushed to move on the top of the sealing plate 24 and is stably clamped in the sealing cover 214. The bottom of the clamping block 29 contacts the top of the connecting block 28, limiting the sealing cover 214 and the connecting block 28.

[0029] When the utility model is in use, the mounting block 22 and the opening monitoring alarm 21 are mounted on the manhole cover 1 by means of the screws 23, and the blocking plate 24 is pushed to be clamped in the mounting block 22, so that the bottom end of the blocking plate 24 abuts against the screws 23, and the screws 23 are pressed and limited. At this time, the elastic force of the spring 26 pushes the limiting frame 25 and the sealing cover 214 to move and clamp in the mounting block 22, so that the blocking plate 24 is stably clamped in the mounting block 22, so that the bottom end of the sealing cover 214 abuts against the top of the blocking plate 24, and the connecting block 28 is pushed downward, so that the push rod 212 moves downward in the gas storage cylinder 211, so that the gas storage cylinder 21 The compressed gas in the well 1 flows into the two airbags 27 through the air pipe 210 respectively. The airbags 27 are stretched and abutted against the mounting block 22 due to sufficient gas, so that the airbags 27 block the inner wall of the mounting block 22. At this time, the clamping block 29 is pushed to move on the top of the blocking plate 24 and is clamped in the sealing cover 214. The bottom of the clamping block 29 abuts against the top of the connecting block 28, and the sealing cover 214 and the connecting block 28 are limited, so that the mounting block 22, the blocking plate 24 and the airbags 27 wrap and seal the screws 23, so as to prevent water vapor from adhering to the screws 23, thereby reducing the difficulty of opening the monitoring alarm 21 on the dismantling of the manhole cover 1.

[0030] It should be noted that the monitoring alarm 21, screws 23, springs 26 and airbags 27 in the above description are all relatively mature devices in the existing technology. The specific models can be selected according to actual needs. At the same time, the monitoring alarm 21 can be powered by a built-in power supply or by AC power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for monitoring the opening of a manhole cover, characterized in that: include: Manhole cover (1); A monitoring device (2), wherein the surface of the monitoring device (2) is arranged on the top of the manhole cover (1); The monitoring device (2) comprises an opening monitoring alarm (21) arranged at the top of the manhole cover (1), and both sides of the opening monitoring alarm (21) are fixedly connected with mounting blocks (22), the inner wall of the mounting block (22) is threadedly connected with a screw (23), the lower end of the surface of the screw (23) is threadedly connected to the inner wall of the manhole cover (1), the top of the mounting block (22) is clamped with a blocking plate (24), the bottom end of the blocking plate (24) abuts against the top of the screw (23), the inner wall of the blocking plate (24) is slidably connected with a limiting frame (25), the surface of the limiting frame (25) is clamped with the inner wall of the mounting block (22), the rear end of the limiting frame (25) is fixedly connected with a spring (26), and the other end of the spring (26) is fixedly connected to the inner wall of the blocking plate (24).

2. A device for monitoring the opening of a manhole cover according to claim 1, characterized in that: The inner wall of the blocking plate (24) is fixedly connected to an air cylinder (211), the interior of the air cylinder (211) is filled with compressed gas, the bottom end of the air cylinder (211) is connected to an air pipe (210), and the lower end of the surface of the blocking plate (24) is fixedly connected to two air bags (27), the inner wall of the air bag (27) is connected to one end of the air pipe (210).

3. A device for monitoring the opening of a manhole cover according to claim 2, characterized in that: The inner wall of the gas storage cylinder (211) is slidably connected with a gas pushing rod (212), and the top end of the gas pushing rod (212) penetrates and extends out of the top of the blocking plate (24).

4. A device for monitoring the opening of a manhole cover according to claim 3, characterized in that: A pull rope (213) is fixedly connected to one side of the limiting frame (25), and the top end of the pull rope (213) penetrates and extends out of the inner wall of the blocking plate (24).

5. A device for monitoring the opening of a manhole cover according to claim 4, characterized in that: The top end of the pull rope (213) is fixedly connected to a sealing cover (214).

6. A device for monitoring the opening of a manhole cover according to claim 5, characterized in that: A clamping block (29) is slidably connected to the top of the blocking plate (24), and a surface of the clamping block (29) is clamped to the inner wall of the sealing cover (214).

7. A device for monitoring the opening of a manhole cover according to claim 6, characterized in that: The top end of the air pushing rod (212) is fixedly connected to a connecting block (28), and the bottom of the clamping block (29) abuts against the top of the connecting block (28).

8. The device for monitoring the opening of a manhole cover according to claim 1, characterized in that: The blocking plate (24) and the sealing cover (214) are both silicone components.

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