Well lid displacement monitor

Abstract

The utility model is applicable to the technical field of displacement monitoring devices, and provides a well lid displacement monitor which comprises a well lid body, two through grooves are formed in the surface of the well lid body, a protection box is arranged at the bottom of the well lid body, a limiting ring is fixedly connected to the inner wall of the protection box, a mounting plate is arranged on one side of the limiting ring, and the limiting ring is fixedly connected with the mounting plate. The mounting plate and the limiting ring are fixedly connected through bolts, a transparent window is formed in the side wall of the protection box, a displacement sensor, a processor module, a WiFi module and a power module are sequentially arranged on the surface of the mounting plate, and the displacement sensor is matched with the transparent window. By arranging the fixing mechanism, the device can be fixed to the bottom of an existing well lid with the two through grooves in the surface of the well lid body as fulcrums, a new well lid does not need to be specially cast to adapt to installation of the device, and therefore the application range of the device can be widened, meanwhile, the fixing rod and the clamping block in the device are small in size and convenient to use. Therefore, normal opening of the well lid by a tool is not affected.

Description

Technical Field

[0001] This utility model relates to displacement monitoring devices, and more particularly to a manhole cover displacement monitoring instrument. Background Technology

[0002] The power and telecommunications sectors mostly bury their cables underground, using manhole covers for routine maintenance. This provides opportunities for criminals. The wide distribution and large number of manhole covers make supervision difficult, leading to a surge in theft of manhole covers directly or through their entrances. These thefts severely impact the normal functioning of municipal facilities and cause significant direct and indirect economic losses. Therefore, it is necessary to install manhole cover displacement monitoring devices to monitor the condition of manhole covers.

[0003] However, existing patents have the following shortcomings:

[0004] 1. The existing manhole cover structure does not have a dedicated structure for installing monitoring devices. Therefore, the sensor elements of the existing manhole covers are directly locked to the manhole cover with screws and other fasteners. However, this installation method is easy to damage the structure of the manhole cover, which will reduce its strength. In addition, tools are required to disassemble and install the monitoring device and replace the power supply, which is convenient for the operator. Summary of the Invention

[0005] This utility model provides a manhole cover displacement monitoring device, which aims to solve the problem mentioned in the background art that the existing manhole cover structure does not have a dedicated monitoring device installation structure. Therefore, the sensor elements of the existing manhole covers are directly locked to the manhole cover by screws and other fasteners. However, such installation method is easy to damage the structure of the manhole cover, resulting in a decrease in its strength. In addition, tools are required to disassemble and install the monitoring device and replace the power supply, which makes it inconvenient for the operator to use.

[0006] This utility model is implemented as follows: a manhole cover displacement monitoring device includes a manhole cover body, two through grooves on the surface of the manhole cover body, a protective box at the bottom of the manhole cover body, a limit ring fixedly connected to the inner wall of the protective box, an mounting plate on one side of the limit ring, and a bolt-fixed connection between the mounting plate and the limit ring. A transparent window is provided on the side wall of the protective box, and a displacement sensor, a processor module, a WiFi module and a power module are sequentially provided on the surface of the mounting plate. The displacement sensor is matched with the transparent window.

[0007] The protective box is equipped with a fixing mechanism inside, which is used to fix the manhole cover body to the protective box.

[0008] Preferably, the fixing mechanism includes two locking blocks. The fixing mechanism also includes a spacing adjustment structure for adjusting the distance between the two locking blocks and an extension structure for adjusting the extension height of the two locking blocks.

[0009] Preferably, the spacing adjustment structure includes an extension rod and a rotating rod, the number of extension rods is set to two, the ends of the two extension rods are provided with threaded grooves, the middle of the two extension rods are provided through the protective box, and the two extension rods are slidably connected to the protective box;

[0010] The rotating rod is installed through the bottom of the protective box in the middle. The rotating rod is rotatably connected to the protective box. The outer circumference of the rotating rod is threaded. A knob is fixedly connected to one end of the rotating rod. A drive bevel gear is fixedly connected to the other end of the rotating rod. A locking nut is threadedly connected to the outer circumference of the rotating rod. Two handles are fixedly connected to the outer circumference of the locking nut.

[0011] Both sides of the driving bevel gear are provided with fixing parts. The bottom of both fixing parts is fixedly connected to the inner wall of the protective box. A threaded rod is provided through the middle of both fixing parts. The two threaded rods are rotatably connected to the two fixing parts respectively. One end of the two threaded rods is threadedly connected to two threaded grooves respectively. The other end of the two threaded rods is fixedly connected to a driven bevel gear respectively. Both driven bevel gears are meshed with the driving bevel gear.

[0012] Rotating the knob drives the rotating rod to rotate the driving bevel gear, which in turn drives the two threaded rods to rotate. Since the two extension rods cannot rotate on their own and are threadedly connected to the two threaded rods through two threaded grooves, rotating the two threaded rods allows them to move laterally. Adjusting the knob's rotation direction allows the two extension rods to move relative to or away from each other, thus adjusting the distance between the locking blocks at the ends of the two extension rods. This ensures the locking blocks are aligned with the two through slots on the manhole cover surface. Once the locking blocks are in position, rotating the two handles rotates the locking nut, causing it to move upwards around the rotating rod and abut against the bottom of the protective box. Friction then secures the locking nut and the rotating rod, thus fixing the two extension rods in place.

[0013] Preferably, the extension structure includes a limiting sleeve, and the number of the limiting sleeves is set to two. A fixing rod is slidably arranged inside the two limiting sleeves, and a limiting groove is formed on the side wall of the two fixing rods.

[0014] Both of the limiting grooves are T-shaped, and both of the limiting grooves are slidably provided with limiting blocks inside. Both limiting blocks are fixedly connected with connecting rods on their side walls. The two connecting rods pass through the two limiting sleeves respectively. The two connecting rods are slidably connected to the two limiting sleeves respectively. The ends of the two connecting rods are fixedly connected to the ends of the two extension rods respectively.

[0015] Both of the fixed rods have a stop block fixedly connected to their bottoms, and the tops of the two fixed rods are respectively fixedly connected to two locking blocks;

[0016] When the two extension rods drive the two fixed rods to positions corresponding to the two through slots, the two fixed rods move upward relative to the two limiting sleeves and pass through the two through slots. The locking blocks at the top of the two fixed rods then fit against the upper surface of the manhole cover body. At this time, by controlling the rotation direction of the control knob, the two extension rods move relative to each other. The two extension rods then pull the two limiting blocks through the two connecting rods. Simultaneously, the two limiting blocks abut against the inner walls of the limiting slots opened on the side walls of the two fixed rods. Thus, the two fixed rods are fixed to the limiting blocks through friction, thereby completing the fixation between the two fixed rods and the limiting sleeves. After that, the two extension rods are locked. At this time, the protective box is fixed to the manhole cover body by the locking blocks at the top of the two fixed rods.

[0017] Preferably, the protective box has a mounting cover on the top, a sealing ring is provided between the protective box and the mounting cover, and the protective box and the mounting cover are fixedly connected by bolts;

[0018] By setting a sealing ring between the mounting cover and the protective box, the airtightness between the mounting cover and the protective box can be improved, thereby preventing water from splashing into the interior of the protective box when the manhole cover is flooded, which helps to expand the applicability of the device.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This utility model provides a manhole cover displacement monitoring device.

[0020] 1. Most manhole covers have two through slots on their surface, mainly to facilitate opening the manhole cover with tools. This utility model can easily fix the device to the bottom of the existing manhole cover by setting a fixing mechanism with the two through slots on the surface of the manhole cover as fulcrums, without the need to specially cast a new manhole cover to adapt to the installation of the device, thereby improving the applicability of the device. At the same time, the fixing rod and the locking block in the device are small in size, so they will not affect the normal opening of the manhole cover by the tools. Attached Figure Description

[0021] Figure 1 This is a first-view perspective perspective view of the present invention;

[0022] Figure 2 This is a second-view perspective perspective view of the present invention;

[0023] Figure 3 This is an exploded view of the protective shell of this utility model;

[0024] Figure 4 This is a cross-sectional view of the protective shell of this utility model;

[0025] Figure 5 This is an exploded view of the extended structure of this utility model;

[0026] Figure 6 This utility model Figure 1 Enlarged view of the A-section structure;

[0027] Figure 7 For the present utility model Figure 4 Enlarged view of the structure of part B.

[0028] In the picture:

[0029] 1. Manhole cover body; 11. Through slot; 12. Protective box; 13. Limiting ring; 14. Mounting plate; 15. Transparent window; 16. Displacement sensor; 17. Processor module; 18. WiFi module; 19. Power module;

[0030] 2. Fixed mechanism;

[0031] 21. Block;

[0032] 22. Spacing adjustment structure; 221. Extension rod; 222. Rotating rod; 223. Threaded groove; 224. Knob; 225. Driving bevel gear; 226. Locking nut; 227. Handle; 228. Fixing component; 229. Threaded rod; 2210. Driven bevel gear;

[0033] 23. Extension structure; 231. Limiting sleeve; 232. Fixing rod; 233. Limiting groove; 234. Limiting block; 235. Connecting rod; 236. Abutment block;

[0034] 3. Install the cover; 31. Seal ring. Detailed Implementation

[0035] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0036] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0037] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Please see Figure 1-7 This utility model provides a technical solution: a manhole cover displacement monitoring device, including a manhole cover body 1, two through grooves 11 on the surface of the manhole cover body 1, a protective box 12 at the bottom of the manhole cover body 1, a limit ring 13 fixedly connected to the inner wall of the protective box 12, an installation plate 14 on one side of the limit ring 13, the installation plate 14 and the limit ring 13 are fixedly connected by bolts, a transparent window 15 is provided on the side wall of the protective box 12, and a displacement sensor 16, a processor module 17, a WiFi module 18 and a power module 19 are sequentially provided on the surface of the installation plate 14, the displacement sensor 16 is matched with the transparent window 15;

[0041] The protective box 12 is equipped with a fixing mechanism 2 inside, which is used to fix the manhole cover body 1 and the protective box 12.

[0042] Furthermore, the fixing mechanism 2 includes two locking blocks 21. The fixing mechanism 2 also includes a spacing adjustment structure 22 for adjusting the distance between the two locking blocks 21, and an extension structure 23 for adjusting the extension height of the two locking blocks 21.

[0043] Furthermore, the spacing adjustment structure 22 includes an extension rod 221 and a rotating rod 222. The number of extension rods 221 is set to two. The ends of the two extension rods 221 are provided with threaded grooves 223. The middle of the two extension rods 221 passes through the protective box 12. The two extension rods 221 are slidably connected to the protective box 12.

[0044] The rotating rod 222 is installed through the bottom of the protective box 12 in the middle. The rotating rod 222 is rotatably connected to the protective box 12. The outer circumference of the rotating rod 222 is threaded. One end of the rotating rod 222 is fixedly connected to a knob 224. The other end of the rotating rod 222 is fixedly connected to a drive bevel gear 225. The outer circumference of the rotating rod 222 is threaded with a locking nut 226. Two handles 227 are fixedly connected to the outer circumference of the locking nut 226.

[0045] Both sides of the driving bevel gear 225 are provided with fixing parts 228. The bottom of both fixing parts 228 is fixedly connected to the inner wall of the protective box 12. A threaded rod 229 is provided through the middle of both fixing parts 228. The two threaded rods 229 are rotatably connected to the two fixing parts 228 respectively. One end of the two threaded rods 229 is threadedly connected to two threaded grooves 223 respectively. The other end of the two threaded rods 229 is fixedly connected to a driven bevel gear 2210 respectively. Both driven bevel gears 2210 are meshed with the driving bevel gear 225.

[0046] Furthermore, the extension structure 23 includes a limiting sleeve 231, and the number of limiting sleeves 231 is set to two. A fixing rod 232 is slidably arranged inside the two limiting sleeves 231, and a limiting groove 233 is opened on the side wall of the two fixing rods 232.

[0047] Both limiting grooves 233 are T-shaped, and both limiting blocks 234 are slidably arranged inside both limiting grooves 233. Both limiting blocks 234 are fixedly connected to the side walls of both limiting blocks 234. The two connecting rods 235 are respectively set through the two limiting sleeves 231. The two connecting rods 235 are slidably connected to the two limiting sleeves 231 respectively. The ends of the two connecting rods 235 are fixedly connected to the ends of the two extension rods 221 respectively.

[0048] Both fixing rods 232 have a stop block 236 fixedly connected to their bottoms, and the tops of the two fixing rods 232 are fixedly connected to two locking blocks 21 respectively.

[0049] Furthermore, the protective box 12 is provided with a mounting cover 3 on the top, and a sealing ring 31 is provided between the protective box 12 and the mounting cover 3. The protective box 12 and the mounting cover 3 are fixedly connected by bolts.

[0050] Working principle and usage process of this utility model:

[0051] When installing the device, rotating the knob 224 can drive the drive bevel gear 225 to rotate via the rotating rod 222. At the same time, the drive bevel gear 225 will drive the two threaded rods 229 to rotate. At this time, the two extension rods 221 cannot rotate on their own and are threadedly connected to the two threaded rods 229 via the two threaded grooves 223 respectively. Therefore, the rotation of the two threaded rods 229 can drive the two extension rods 221 to move laterally. By adjusting the rotation direction of the knob 224, the two extension rods 221 can be made to move relative to each other or apart, thereby adjusting the distance between the locking blocks 21 at the ends of the two extension rods 221.

[0052] When the two extension rods 221 drive the two fixed rods 232 to positions corresponding to the two through slots 11, the two fixed rods 232 move upward relative to the two limiting sleeves 231 and pass through the two through slots 11, and the locking blocks 21 at the top of the two fixed rods 232 fit against the upper surface of the manhole cover body 1. At this time, by controlling the rotation direction of the control knob 224, the two extension rods 221 move relative to each other. At this time, the two extension rods 221 will pull the two limiting blocks 234 through the two connecting rods 235 respectively. At the same time, the two limiting blocks 234 will abut against the inner wall of the limiting slots 233 opened on the side wall of the two fixed rods 232 respectively, and then the two fixed rods 232 and the limiting blocks 234 are fixed together by friction, and then the two fixed rods 232 are fixed relative to the limiting sleeves 231.

[0053] After the positions of the two locking blocks 21 are determined, the locking nut 226 can be rotated by the two handles, so that the locking nut 226 moves upward on the outer periphery of the rotating rod 222 and the end of the locking nut 226 abuts against the bottom of the protective box 12, thereby fixing the locking nut 226 and the rotating rod 222 by friction, and thus fixing the two extension rods 221.

[0054] The device is equipped with a displacement sensor 16, which is a laser displacement sensor 16. After the manhole cover moves, it can transmit the detected signal to the processor module 17, and the processor module 17 can transmit the received signal to terminal devices such as computers or mobile phones through the WiFi module 18.

Claims

1. A manhole cover displacement monitoring device, comprising a manhole cover body (1), characterized in that: The manhole cover body (1) has two through slots (11) on its surface. The bottom of the manhole cover body (1) is provided with a protective box (12). A limiting ring (13) is fixedly connected to the inner wall of the protective box (12). An installation plate (14) is provided on one side of the limiting ring (13). The installation plate (14) and the limiting ring (13) are fixedly connected by bolts. A transparent window (15) is provided on the side wall of the protective box (12). A displacement sensor (16), a processor module (17), a WiFi module (18) and a power module (19) are sequentially provided on the surface of the installation plate (14). The displacement sensor (16) is matched with the transparent window (15). The protective box (12) is equipped with a fixing mechanism (2) inside, which is used to fix the manhole cover body (1) and the protective box (12).

2. The manhole cover displacement monitoring device as described in claim 1, characterized in that: The fixing mechanism (2) includes two locking blocks (21). The fixing mechanism (2) also includes a spacing adjustment structure (22) for adjusting the distance between the two locking blocks (21) and an extension structure (23) for adjusting the extension height of the two locking blocks (21).

3. The manhole cover displacement monitoring device as described in claim 2, characterized in that: The spacing adjustment structure (22) includes an extension rod (221) and a rotating rod (222). There are two extension rods (221). The ends of the two extension rods (221) are provided with threaded grooves (223). The middle of the two extension rods (221) passes through the protective box (12). The two extension rods (221) are slidably connected to the protective box (12). The rotating rod (222) is installed through the bottom of the protective box (12) in the middle. The rotating rod (222) is rotatably connected to the protective box (12). The rotating rod (222) has a thread on its outer periphery. A knob (224) is fixedly connected to one end of the rotating rod (222). An active bevel gear (225) is fixedly connected to the other end of the rotating rod (222). A locking nut (226) is threadedly connected to the outer periphery of the rotating rod (222). Two handles (227) are fixedly connected to the outer periphery of the locking nut (226). The driving bevel gear (225) is provided with fixing parts (228) on both sides. The bottom of the two fixing parts (228) is fixedly connected to the inner wall of the protective box (12). The middle of the two fixing parts (228) is provided with threaded rods (229). The two threaded rods (229) are rotatably connected to the two fixing parts (228) respectively. One end of the two threaded rods (229) is threadedly connected to two threaded grooves (223) respectively. The other end of the two threaded rods (229) is fixedly connected to driven bevel gears (2210). The two driven bevel gears (2210) are meshed with the driving bevel gear (225).

4. The manhole cover displacement monitoring device as described in claim 3, characterized in that: The extension structure (23) includes a limiting sleeve (231), and the number of the limiting sleeves (231) is set to two. A fixing rod (232) is slidably arranged inside the two limiting sleeves (231), and a limiting groove (233) is opened on the side wall of the two fixing rods (232). Both of the limiting grooves (233) are T-shaped, and both of the limiting grooves (233) are slidably provided with limiting blocks (234) inside. Both of the limiting blocks (234) are fixedly connected with connecting rods (235) on their side walls. The two connecting rods (235) are respectively provided through the two limiting sleeves (231). The two connecting rods (235) are slidably connected to the two limiting sleeves (231). The ends of the two connecting rods (235) are fixedly connected to the ends of the two extension rods (221). The bottom of each of the two fixing rods (232) is fixedly connected to a stop block (236), and the top of each of the two fixing rods (232) is fixedly connected to two locking blocks (21).

5. A manhole cover displacement monitoring device as described in claim 1, characterized in that: The protective box (12) is provided with a mounting cover (3) on the top, and a sealing ring (31) is provided between the protective box (12) and the mounting cover (3). The protective box (12) and the mounting cover (3) are fixedly connected by bolts.

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