Anti-pressure alarm device and method for double-layer intelligent manhole cover located between inner and outer layers

Abstract

The present invention discloses a pressure-resistant alarm device and method for a double-layer intelligent manhole cover located between an inner layer and an outer layer, which belongs to the technical field of manhole covers and includes a manhole cover body and an external connecting ring, wherein the manhole cover body is arranged in the external connecting ring, the manhole cover body includes an upper manhole cover and a lower manhole cover, the lower manhole cover is arranged on the external connecting ring, and the lower manhole cover and the external connecting ring are directly provided with a supporting assembly. The pressure-resistant alarm device and method for a double-layer intelligent manhole cover located between an inner layer and an outer layer of the present invention, a screw rod drives a driving moving seat to rotate, a card block is inserted into a sliding card slot, the lower manhole cover is locked, the stability of the connection is improved, the inner connecting rod is covered by a supporting inner tube, the inner connecting rod is supported while limiting, the supporting strength is strengthened, the stability of the manhole cover when in use is improved, the supporting strength is improved, the load-bearing efficiency of the entire manhole cover is increased, the pressure-resistant value of the manhole cover is detected, and an early warning is given to prevent the manhole cover from being damaged due to excessive pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of manhole covers, and in particular to a pressure-resistant alarm device and method for a double-layer intelligent manhole cover located between an inner layer and an outer layer. Background Art

[0002] Various pipelines are buried under municipal roads and squares. In order to facilitate maintenance, manholes leading to the ground are set up, and manhole covers are installed on the top of the manholes to keep the ground flat and unobstructed.

[0003] In the prior art, for example, publication number CN112227422A discloses a double-layer intelligent manhole cover, comprising a manhole cover base, an upper manhole cover, a lower manhole cover, a lock body and a wireless module; the manhole cover base has a through passage, and a support portion protruding from the inner wall of the through passage is formed in the through passage; the upper manhole cover is arranged at the top end of the through passage, and a first convex ring is formed at the bottom thereof; the above invention forms a receiving cavity by the cooperation of the upper and lower manhole covers, reduces the contact between water and corrosive gases and electronic components, and provides better protection for the electronic components;

[0004] However, in the process of installing the manhole cover, the above patents often have the following defects:

[0005] 1. The installation process of the manhole cover structure is complicated, and it is impossible to lock it while supporting it;

[0006] 2. The manhole cover cannot detect the pressure it is bearing and cannot sound an alarm when the pressure is too high. Summary of the invention

[0007] The purpose of the present invention is to provide a pressure-resistant alarm device and method for a double-layer intelligent manhole cover located between the inner and outer layers. The screw rod drives the driving movable seat to rotate, and the card block is inserted into the sliding card slot to lock the lower manhole cover, thereby improving the stability of the connection. The inner connecting rod is covered by the supporting inner tube to support the inner connecting rod while limiting the position, thereby strengthening the supporting strength, improving the stability of the manhole cover when in use, increasing the supporting strength, and increasing the load-bearing efficiency of the entire manhole cover. The pressure resistance value of the manhole cover is detected, and an early warning is issued to prevent the manhole cover from being damaged due to excessive pressure, thereby solving the problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] The anti-pressure alarm device of the double-layer intelligent manhole cover located between the inner and outer layers comprises a manhole cover body and an outer connecting ring, wherein the manhole cover body is arranged in the outer connecting ring, the manhole cover body comprises an upper manhole cover and a lower manhole cover, the lower manhole cover is arranged on the outer connecting ring, and the lower manhole cover and the outer connecting ring are directly provided with a supporting assembly;

[0010] The upper manhole cover and the lower manhole cover are directly provided with a pressure measuring device, and the pressure measuring device includes a pressure plate, a pressure rod, a detection component and a mounting structure. A pressure rod is installed under the upper manhole cover, a pressure plate is arranged under the pressure rod, a detection component is arranged inside the pressure plate, and the upper manhole cover is installed in an external connecting ring through the mounting structure, and an alarm system is arranged in the manhole cover body.

[0011] Furthermore, the support assembly includes a driving motor, a screw rod, a movable seat, a diagonal brace assembly, a positioning rod and a reinforcement limit assembly. The driving motor is arranged below the external connecting ring. A mounting plate is arranged at the bottom end of the external connecting ring. The driving motor is fixed to the bottom end of the external connecting ring. The output end of the driving motor is connected to the screw rod. A positioning rod is arranged at the side end of the screw rod. A moving seat is sleeved on the screw rod and the positioning rod. The upper end of the moving seat is pressed with the lower end of the lower manhole cover. A diagonal brace assembly is arranged on the outer side of the moving seat. The diagonal brace assembly is covered with a reinforcement limit assembly.

[0012] Furthermore, the diagonal support assembly includes a main support rod, an inner connecting rod, an installation shaft rod, an inner connecting groove and an extrusion spring. The main support rod is fixed to the side end of the movable seat. The front end of the main support rod is provided with an inner connecting groove. The inner connecting rod is installed in the inner connecting groove. The installation shaft rod is arranged between the inner connecting rod and the inner wall of the inner connecting groove. The extrusion spring is arranged between the inner connecting rod and the inner connecting groove. The main support rod at the side end of the inner connecting groove is provided with an opening for flipping the inner connecting rod.

[0013] Furthermore, the reinforced limit assembly includes an air pump, a left cylinder, a right cylinder, an annular limit support plate, a sleeve, an air injection groove, a support inner tube and a piston sleeve. The air pump is fixed to the bottom end of the external connecting ring, and the left cylinder and the right cylinder are respectively installed on both sides of the bottom end of the external connecting ring. An annular limit support plate is installed on the output ends of the left cylinder and the right cylinder. The sleeve is sleeved on the main support rod. An air injection groove is opened inside the sleeve, and a support inner tube is arranged inside the air injection groove. A piston sleeve is installed above the support inner tube, and the piston sleeve is fitted and connected to the inner wall of the air injection groove. The output end of the air pump is respectively communicated with the left cylinder, the right cylinder and the air injection groove.

[0014] Furthermore, a clamping block is provided above the movable seat, an insertion groove is provided below the lower manhole cover, a sliding clamping groove is provided at the inner end of the insertion groove, the clamping block is slidably engaged with the sliding clamping groove, an arc-shaped sliding groove is provided below the movable seat, and the arc-shaped sliding groove is movably engaged with the positioning rod.

[0015] Furthermore, the detection component is composed of multiple groups of pressure sensors, and the multiple groups of pressure sensors are connected to the alarm system. The multiple groups of pressure sensors are arranged on the pressure plate, and a pressure sensor is arranged under each group of pressure rods. A pressing groove for pressing the pressure rod is opened at the inner end of the upper manhole cover, and a spring docking with the pressure rod is arranged at the inner end of the pressing groove.

[0016] Furthermore, the mounting structure includes an upper connecting ring plate, an internal bearing, a penetrating groove, an external clamping block and a bottom support plate. The outer end of the upper connecting ring plate is fixed in the external connecting ring through the internal bearing. A penetrating groove is provided on the upper connecting ring plate. The external clamping block is fixed on both sides of the upper manhole cover. A bottom support plate is provided below the external clamping block. Springs are provided in the inner grooves provided on the bottom support plate and the external ring.

[0017] Furthermore, the alarm system includes a control module, a processing module, a buzzer and an alarm light. The control module is connected to the processing module, and the buzzer and the alarm light are respectively connected to the control module.

[0018] The present invention provides another technical solution: a method for using a pressure-resistant alarm device of a double-layer intelligent manhole cover between an inner layer and an outer layer, comprising the following steps:

[0019] Step 1: When installing the manhole cover body, place the lower manhole cover in the external ring, and then place the upper manhole cover on top of the lower manhole cover. After placement, the drive motor drives the screw rod to rotate, and drives the moving seat to move on the screw rod and the positioning rod. The positioning rod is shorter than the screw rod. When the card block is inserted into the insertion groove under the lower manhole cover, the positioning rod moves into the arc-shaped sliding groove, and the screw rod drives the driving moving seat to rotate, and the card block is inserted into the sliding card groove;

[0020] Step 2: When the upper manhole cover is installed, the external card block at the side end of the upper manhole cover is arranged below the upper connecting ring plate through the penetration groove, and then the upper connecting ring plate is rotated to displace the penetration groove and the external card block;

[0021] Step 3: After the manhole cover body is installed, the moving seat moves up while driving the main support rod to move up, thereby driving the inner connecting rod to move up. When the inner connecting rod is supported, the rear end is squeezed with the rear plate of the main support rod;

[0022] Step 4: When the upper manhole cover receives pressure, the pressure rod inside the upper manhole cover at the pressure point squeezes the pressure plate below, and the pressure sensor at the force-bearing point transmits the detected pressure value to the processing module, which is compared with the preset threshold in the processing module. If it exceeds the qualified value of pressure resistance, the control module controls the buzzer and alarm light to sound an alarm.

[0023] Furthermore, in step three, the air pump drives the left cylinder and the right cylinder to extend and retract, driving the annular limit support plate to move up and down, and docking with the inner connecting rod for supporting. The air pump injects air into the air injection groove in the casing, driving the support inner tube and the piston sleeve to move downward, and the support inner tube limits the inner connecting rod, so that the inner connecting rod and the annular limit support plate are stretched apart, and the inner connecting rod is covered by the support inner tube.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The anti-pressure alarm device and method of the double-layer intelligent manhole cover between the inner and outer layers proposed by the present invention, a sliding card slot is provided at the inner end of the insertion slot, the card block is slidably connected with the sliding card slot, an arc-shaped slide slot is provided below the movable seat, the arc-shaped slide slot is movably connected with the positioning rod, the output end of the driving motor is connected with the screw rod, the side end of the screw rod is provided with a positioning rod, the screw rod and the positioning rod are sleeved with a movable seat, the upper end of the movable seat is pressed with the lower end of the lower manhole cover, the outer side of the movable seat is provided with a diagonal support assembly, the diagonal support assembly The upper sleeve is covered with a reinforced limit assembly. When installing the manhole cover body, the lower manhole cover is placed in the external ring, and then the upper manhole cover is placed on top of the lower manhole cover. After placement, the drive motor drives the screw rod to rotate, and drives the moving seat to move on the screw rod and the positioning rod. The positioning rod is shorter than the screw rod. When the card block is inserted into the insertion groove under the lower manhole cover, the positioning rod moves into the arc-shaped slide groove, and the screw rod drives the moving seat to rotate, and the card block is inserted into the sliding card groove to lock the lower manhole cover, thereby improving the stability of the connection.

[0026] 2. The anti-pressure alarm device and method of the double-layer intelligent manhole cover located between the inner and outer layers proposed by the present invention, a supporting inner tube is arranged inside the gas injection groove, a piston sleeve is installed above the supporting inner tube, the piston sleeve is fitted and connected with the inner wall of the gas injection groove, and the output end of the air pump is respectively communicated with the left cylinder, the right cylinder and the gas injection groove. After the manhole cover body is installed, the moving seat moves up and drives the main support rod to move up, thereby driving the inner connecting rod to move up. When the inner connecting rod is supported, the rear end is squeezed with the rear plate of the main support rod to increase the supporting strength and increase the load-bearing efficiency of the entire manhole cover. The air pump drives the left cylinder and the right cylinder to extend and retract, drives the annular limiting support plate to move up and down, and docks with the inner connecting rod for matching support. The air pump injects gas into the gas injection groove in the casing, drives the supporting inner tube and the piston sleeve to move down, and the supporting inner tube limits the inner connecting rod, so that the inner connecting rod and the annular limiting support plate are stretched open, and the inner connecting rod is covered by the supporting inner tube, so that the inner connecting rod is supported while limiting, thereby strengthening the supporting strength and improving the stability of the manhole cover when in use.

[0027] 3. The anti-pressure alarm device and method of the double-layer intelligent manhole cover located between the inner and outer layers proposed in the present invention, the detection component is composed of multiple groups of pressure sensors, and the multiple groups of pressure sensors are connected to the alarm system, the multiple groups of pressure sensors are arranged on the pressure plate, and a pressure sensor is arranged under each group of pressure rods, and a pressing groove for pressing the pressure rod is opened at the inner end of the upper manhole cover, and a spring docking with the pressure rod is arranged at the inner end of the pressing groove. When the upper manhole cover receives pressure, the pressure rod in the upper manhole cover at the pressure point presses the pressure plate below, and the pressure sensor at the force-bearing point transmits the detected pressure value to the processing module, and compares it according to the preset threshold value in the processing module. If it exceeds the qualified value of the anti-pressure, the control module controls the buzzer and the alarm light to sound an alarm, detects the anti-pressure value of the manhole cover, and issues an early warning to prevent the manhole cover from being damaged due to excessive pressure.

[0028] 4. The anti-pressure alarm device and method of the double-layer intelligent manhole cover located between the inner and outer layers proposed in the present invention has a through groove on the upper connecting ring plate, and the external card blocks are fixed on both sides of the upper manhole cover. A bottom support plate is arranged below the external card blocks, and springs are arranged in the inner grooves opened on the bottom support plate and the external ring. When the upper manhole cover is installed, the external card block at the side end of the upper manhole cover is arranged below the upper connecting ring plate through the through groove, and then the upper connecting ring plate is rotated to misalign the through groove and the external card block, and the upper manhole cover is locked, which is convenient for installation and disassembly of the upper manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is a cross-sectional view of the support assembly structure of the present invention;

[0031] Figure 3 It is a cross-sectional view of the connection structure between the manhole cover and the movable seat of the present invention;

[0032] Figure 4 A bottom view of the movable seat structure of the present invention;

[0033] Figure 5 It is a cross-sectional view of the structure of the diagonal bracing assembly and the reinforcement limit assembly of the present invention;

[0034] Figure 6 For the present invention Figure 2 A magnified image of point A;

[0035] Figure 7 It is a structural cross-sectional view of the pressure measuring device of the present invention;

[0036] Figure 8 It is a top view of the installation structure of the present invention;

[0037] Fig. 9 For the present invention Figure 7 A magnified view of point B;

[0038] Fig.10 This is a connection module diagram of the alarm system of the present invention.

[0039] In the figure: 1, manhole cover body; 11, upper manhole cover; 111, pressing groove; 12, lower manhole cover; 121, plug-in groove; 2, external ring; 21, mounting plate; 3, support assembly; 31, drive motor; 32, screw rod; 33, moving seat; 331, clamping block; 332, arc-shaped slide groove; 34, diagonal support assembly; 341, main support rod; 342, inner rod; 343, installation shaft rod; 344, inner groove; 345, extrusion spring; 35, positioning rod; 36, reinforcement limit assembly; 361, air pump; 3 62. Left cylinder; 363. Right cylinder; 364. Annular limit support plate; 365. Sleeve; 366. Air injection groove; 367. Support inner tube; 368. Piston sleeve; 4. Pressure measuring device; 41. Pressure plate; 42. Pressure rod; 43. Detection assembly; 44. Mounting structure; 441. Upper connecting ring plate; 442. Internal bearing; 443. Penetration groove; 444. External clamping block; 445. Bottom support plate; 5. Alarm system; 51. Control module; 52. Processing module; 53. Buzzer; 54. Alarm light. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In order to solve the technical problem that the existing manhole cover structure has a complicated installation process and cannot be locked while supporting, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0042] The anti-pressure alarm device and method of the double-layer intelligent manhole cover located between the inner and outer layers include a manhole cover body 1 and an outer ring 2, the manhole cover body 1 is arranged in the outer ring 2, the manhole cover body 1 includes an upper manhole cover 11 and a lower manhole cover 12, the lower manhole cover 12 is arranged on the outer ring 2, the lower manhole cover 12 and the outer ring 2 are directly provided with a support assembly 3, the support assembly 3 includes a drive motor 31, a screw rod 32, a moving seat 33, a diagonal support assembly 34, a positioning rod 35 and a reinforcement limit assembly 36, the driving motor 31 is arranged below the outer ring 2, the bottom end of the outer ring 2 is provided with a mounting plate 21, the driving motor 31 is fixed to the bottom end of the outer ring 2, a clamping block 331 is arranged above the moving seat 33, an insertion groove 121 is arranged below the lower manhole cover 12, a sliding clamping groove is arranged at the inner end of the insertion groove 121, the clamping block 331 is slidably engaged with the sliding clamping groove, an arc-shaped sliding groove 332 is arranged below the moving seat 33, and the arc-shaped sliding groove 332 is connected to the positioning rod 35 The output end of the driving motor 31 is connected to the screw rod 32, and a positioning rod 35 is provided at the side end of the screw rod 32. A moving seat 33 is sleeved on the screw rod 32 and the positioning rod 35. The upper end of the moving seat 33 is pressed with the lower end of the lower manhole cover 12. An oblique support component 34 is provided on the outer side of the moving seat 33. The oblique support component 34 is sleeved with a reinforcement limit component 36. When installing the manhole cover body 1, the lower manhole cover 12 is placed in the outer ring 2, and then the upper manhole cover 11 is placed on the lower manhole cover 1 2, after being placed, the driving motor 31 drives the screw rod 32 to rotate, and drives the movable seat 33 to move on the screw rod 32 and the positioning rod 35. The positioning rod 35 is shorter than the screw rod 32. When the clamping block 331 is inserted into the insertion groove 121 under the lower manhole cover 12, the positioning rod 35 moves into the arc-shaped sliding groove 332, and the screw rod 32 drives the driving movable seat 33 to rotate, and the clamping block 331 is inserted into the sliding clamping groove, and the lower manhole cover 12 is locked to improve the stability of the connection.

[0043] In order to solve the technical problem that the existing manhole cover structure has low support pressure, resulting in poor load-bearing efficiency, and when the pressure is too high, it is easy to cause the manhole cover to collapse, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0044] The diagonal brace assembly 34 includes a main support rod 341, an inner connecting rod 342, a mounting shaft rod 343, an inner connecting groove 344 and an extrusion spring 345. The main support rod 341 is fixed to the side end of the movable seat 33. The front end of the main support rod 341 is provided with an inner connecting groove 344. The inner connecting rod 342 is installed in the inner connecting groove 344. The mounting shaft rod 343 is provided between the inner connecting rod 342 and the inner wall of the inner connecting groove 344. The extrusion spring 345 is provided between the inner connecting rod 342 and the inner connecting groove 344. The main support rod 341 at the side end of the inner connecting groove 344 is provided with an opening for turning over the inner connecting rod 342. The reinforcement limit assembly 36 includes an air pump 361, a left cylinder 362, a right cylinder 363, an annular limit support plate 364, a sleeve 365, an air injection groove 366, a support inner tube 367 and a piston sleeve 368. The air pump 361 is fixed to the bottom end of the external ring 2, and the left cylinder 362 and the right cylinder 363 are respectively installed on both sides of the bottom end of the external ring 2. The output ends of the left cylinder 362 and the right cylinder 363 are installed with an annular limit support plate 364, the sleeve 365 is sleeved on the main support rod 341, and the sleeve 365 is provided with an air injection groove 366. The inner tube 367 is provided with a support, and a piston sleeve 368 is installed above the inner tube 367. The piston sleeve 368 is connected to the inner wall of the gas injection groove 366. The output end of the air pump 361 is respectively connected with the left cylinder 362 and the right cylinder 363 and the gas injection groove 366. After the manhole cover body 1 is installed, the moving seat 33 moves up and drives the main support rod 341 to move up, thereby driving the inner connecting rod 342 to move up. When the inner connecting rod 342 is supported, the rear end is squeezed with the rear plate of the main support rod 341 to increase the support strength and increase the load-bearing efficiency of the entire manhole cover. The air pump 361 drives the left cylinder 362 and the right cylinder 363 as well as the gas injection groove 366. 362 and the right cylinder 363 extend and retract, driving the annular limiting support plate 364 to move up and down, and docking with the inner connecting rod 342 for supporting. The air pump 361 injects air into the air injection groove 366 in the sleeve 365, driving the supporting inner tube 367 and the piston sleeve 368 to move downward, and the supporting inner tube 367 limits the inner connecting rod 342, so that the inner connecting rod 342 and the annular limiting support plate 364 are stretched apart, and the supporting inner tube 367 is used to cover the inner connecting rod 342, so that the inner connecting rod 342 is supported while limiting, thereby reinforcing the supporting strength and improving the stability of the manhole cover during use.

[0045] In order to solve the technical problem that the existing manhole cover cannot detect the pressure it bears and cannot alarm when the pressure is too high, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0046] The upper manhole cover 11 and the lower manhole cover 12 are directly provided with a pressure measuring device 4, and the pressure measuring device 4 includes a pressure plate 41, a pressure rod 42, a detection component 43 and a mounting structure 44. A pressure rod 42 is installed below the upper manhole cover 11, and a pressure plate 41 is arranged below the pressure rod 42. A detection component 43 is arranged inside the pressure plate 41. The upper manhole cover 11 is installed in the external ring 2 through the mounting structure 44. An alarm system 5 is arranged inside the manhole cover body 1. The alarm system 5 includes a control module 51, a processing module 52, a buzzer 53 and an alarm light 54. The control module 51 is connected to the processing module 52, and the buzzer 53 and the alarm light 54 are respectively connected to the control module 51. The detection component 43 is composed of multiple groups of pressure sensors, and the multiple groups of pressure sensors are connected to the alarm system 5 connection, multiple groups of pressure sensors are arranged on the pressure plate 41, and a pressure sensor is arranged under each group of pressure rods 42. The inner end of the upper manhole cover 11 is provided with a pressing groove 111 for pressing the pressure rod 42, and the inner end of the pressing groove 111 is provided with a spring docking with the pressure rod 42. When the upper manhole cover 11 receives pressure, the pressure rod 42 in the upper manhole cover 11 at the pressure position presses the pressure plate 41 below, and the pressure sensor at the force-bearing position transmits the detected pressure value to the processing module 52, and compares it according to the preset threshold value in the processing module 52. If it exceeds the qualified value of the pressure resistance, the control module 51 controls the buzzer 53 and the alarm light 54 to sound an alarm, detects the pressure resistance value of the manhole cover, and issues an early warning to prevent the manhole cover from being damaged due to excessive pressure.

[0047] In order to solve the technical problem that the existing upper cover is inconvenient to disassemble and assemble, and cannot be moved down for pressure testing after being locked, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0048] The mounting structure 44 comprises an upper connecting ring plate 441, an inner bearing 442, a through groove 443, an outer clamping block 444 and a bottom supporting plate 445. The outer end of the upper connecting ring plate 441 is fixed in the outer ring 2 through the inner bearing 442. The upper connecting ring plate 441 is provided with a through groove 443. The outer clamping block 444 is fixed on both sides of the upper manhole cover 11. A bottom supporting plate 445 is arranged below the external clamping block 444. The inner grooves of the bottom supporting plate 445 and the outer ring 2 are provided with springs. When the upper manhole cover 11 is installed, the outer clamping block 444 at the side end of the upper manhole cover 11 is arranged below the upper connecting ring plate 441 through the through groove 443. Then the upper connecting ring plate 441 is rotated to misalign the through groove 443 and the external clamping block 444, so as to lock the upper manhole cover 11 for easy installation and removal of the upper manhole cover 11.

[0049] In order to better demonstrate the use process of the anti-pressure alarm device of the double-layer smart manhole cover located between the inner and outer layers, this embodiment proposes a method for using the anti-pressure alarm device of the double-layer smart manhole cover located between the inner and outer layers, including the following steps:

[0050] Step 1: When installing the manhole cover body 1, place the lower manhole cover 12 in the external ring 2, and then place the upper manhole cover 11 on the upper part of the lower manhole cover 12. After placement, the driving motor 31 drives the screw rod 32 to rotate, and drives the moving seat 33 to move on the screw rod 32 and the positioning rod 35. The positioning rod 35 is shorter than the screw rod 32. When the clamping block 331 is inserted into the insertion groove 121 below the lower manhole cover 12, the positioning rod 35 moves into the arc-shaped sliding groove 332, and the screw rod 32 drives the driving moving seat 33 to rotate, and the clamping block 331 is inserted into the sliding slot;

[0051] Step 2: When the upper manhole cover 11 is installed, the external clamping block 444 at the side end of the upper manhole cover 11 is arranged below the upper connecting ring plate 441 through the through groove 443, and then the upper connecting ring plate 441 is rotated to displace the through groove 443 and the external clamping block 444;

[0052] Step 3: After the manhole cover body 1 is installed, the moving seat 33 moves upward while driving the main support rod 341 to move upward, thereby driving the inner connecting rod 342 to move upward. When the inner connecting rod 342 is supported, the rear end is squeezed with the rear plate of the main support rod 341;

[0053] Step 4: When the upper manhole cover 11 receives pressure, the pressure rod 42 inside the upper manhole cover 11 at the pressure point squeezes the pressure plate 41 below, and the pressure sensor at the force-bearing point transmits the detected pressure value to the processing module 52, and compares it with the preset threshold value in the processing module 52. If it exceeds the qualified value of pressure resistance, the control module 51 controls the buzzer 53 and the alarm light 54 to sound an alarm.

[0054] In summary, the anti-pressure alarm device and method of the double-layer intelligent manhole cover located between the inner and outer layers proposed by the present invention, a sliding slot is provided at the inner end of the insertion slot 121, and the clamping block 331 is slidably engaged with the sliding slot, and an arc-shaped slide slot 332 is provided below the movable seat 33, and the arc-shaped slide slot 332 is movably engaged with the positioning rod 35, and the output end of the drive motor 31 is connected to the screw rod 32, and the side end of the screw rod 32 is provided with a positioning rod 35, and the screw rod 32 and the positioning rod 35 are sleeved with a movable seat 33, and the upper end of the movable seat 33 is pressed with the lower end of the lower manhole cover 12, and the outer side of the movable seat 33 is provided with a diagonal support assembly 34, and the diagonal support assembly 34 is covered with a reinforcement limit assembly 36. When the manhole cover body 1 is installed, the lower manhole cover 12 is placed in the external ring 2, and then the upper manhole cover 1 1 is placed above the lower manhole cover 12. After placement, the driving motor 31 drives the screw rod 32 to rotate, and drives the moving seat 33 to move on the screw rod 32 and the positioning rod 35. The positioning rod 35 is shorter than the screw rod 32. When the clamping block 331 is inserted into the insertion groove 121 below the lower manhole cover 12, the positioning rod 35 moves into the arc-shaped sliding groove 332. The screw rod 32 drives the driving moving seat 33 to rotate, and the clamping block 331 is inserted into the sliding clamping groove to lock the lower manhole cover 12 to improve the stability of the connection. A supporting inner tube 367 is provided inside the gas injection groove 366, and a piston sleeve 368 is installed above the supporting inner tube 367. The piston sleeve 368 is fitted and connected to the inner wall of the gas injection groove 366. The output end of the air pump 361 is respectively connected to the left cylinder 362 and the right cylinder 363 and The air injection grooves 366 are interconnected. After the manhole cover body 1 is installed, the moving seat 33 moves up and drives the main support rod 341 to move up, thereby driving the inner connecting rod 342 to move up. When the inner connecting rod 342 is supporting, the rear end is squeezed with the rear plate of the main support rod 341 to increase the supporting strength and increase the load-bearing efficiency of the entire manhole cover. The air pump 361 drives the left cylinder 362 and the right cylinder 363 to extend and retract, driving the annular limiting support plate 364 to move up and down, and docking with the inner connecting rod 342 for matching support. The air pump 361 injects air into the air injection groove 366 in the sleeve 365, driving the supporting inner tube 367 and the piston sleeve 368 to move downward, and the supporting inner tube 367 limits the inner connecting rod 342, so that the inner connecting rod 342 and the annular limiting support plate 364 are stretched apart, and the inner connecting rod 342 is supported by the supporting inner tube 367. 2 is wrapped to support the inner connecting rod 342 while limiting the position, so as to strengthen the support strength and improve the stability of the manhole cover when in use. The detection component 43 is composed of multiple groups of pressure sensors, and the multiple groups of pressure sensors are connected to the alarm system 5. The multiple groups of pressure sensors are arranged on the pressure plate 41, and a pressure sensor is arranged under each group of pressure rods 42. The inner end of the upper manhole cover 11 is provided with a pressing groove 111 for squeezing the pressure rod 42, and the inner end of the pressing groove 111 is provided with a spring docking with the pressure rod 42. When the upper manhole cover 11 receives pressure, the pressure rod 42 in the upper manhole cover 11 at the pressure receiving position squeezes the pressure plate 41 below, and the pressure sensor at the force receiving position transmits the detected pressure value to the processing module 52, and compares it according to the preset threshold value in the processing module 52.If the pressure exceeds the qualified value, the control module 51 controls the buzzer 53 and the alarm light 54 to sound an alarm, detects the pressure resistance value of the manhole cover, and issues an early warning to prevent the manhole cover from being damaged due to excessive pressure. A through groove 443 is provided on the upper connecting ring plate 441, and an external card block 444 is fixed on both sides of the upper manhole cover 11. A bottom support plate 445 is provided below the external card block 444. A spring is provided between the bottom support plate 445 and the inner groove provided on the external ring 2. When the upper manhole cover 11 is installed, the external card block 444 at the side end of the upper manhole cover 11 is provided below the upper connecting ring plate 441 through the through groove 443. Then the upper connecting ring plate 441 is rotated to displace the through groove 443 and the external card block 444, and the upper manhole cover 11 is locked, which is convenient for the installation and removal of the upper manhole cover 11.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The anti-pressure alarm device of the double-layer intelligent manhole cover located between the inner and outer layers is characterized by: It comprises a manhole cover body (1) and an external connecting ring (2), wherein the manhole cover body (1) is arranged inside the external connecting ring (2), the manhole cover body (1) comprises an upper manhole cover (11) and a lower manhole cover (12), the lower manhole cover (12) is arranged on the external connecting ring (2), and a supporting assembly (3) is arranged between the lower manhole cover (12) and the external connecting ring (2);A pressure measuring device (4) is provided between the upper manhole cover (11) and the lower manhole cover (12); the support assembly (3) comprises a drive motor (31), a screw rod (32), a movable seat (33), a diagonal support assembly (34), a positioning rod (35) and a reinforcement limit assembly (36); the drive motor (31) is provided below the external ring (2); a mounting plate (21) is provided at the bottom end of the external ring (2); the drive motor (31) is fixed to the bottom end of the external ring (2); an output end of the drive motor (31) is connected to the screw rod (32); a positioning rod (35) is provided at the side end of the screw rod (32); a movable seat (33) is sleeved on the screw rod (32) and the positioning rod (35); the upper end of the movable seat (33) is pressed against the lower end of the lower manhole cover (12); and the movable seat (33) is movable between the upper end of the movable seat (33) and the lower end of the lower manhole cover (12). The outer side of the movable seat (33) is provided with an inclined support assembly (34), and the inclined support assembly (34) is covered with a reinforcement limit assembly (36). The inclined support assembly (34) comprises a main support rod (341), an inner connecting rod (342), a mounting shaft rod (343), an inner connecting groove (344) and an extrusion spring (345). The main support rod (341) is fixed to the side end of the movable seat (33), and the front end of the main support rod (341) is provided with an inner connecting groove (344). The inner connecting rod (342) is installed in the inner connecting groove (344), and the mounting shaft rod (343) is provided between the inner connecting rod (342) and the inner wall of the inner connecting groove (344). The extrusion spring (345) is provided between the inner connecting rod (342) and the inner connecting groove (344). The main support rod (341) is provided with an opening for turning over the inner connecting rod (342); the reinforcement limit assembly (36) comprises an air pump (361), a left air cylinder (362), a right air cylinder (363), an annular limit support plate (364), a sleeve (365), an air injection groove (366), a support inner tube (367) and a piston sleeve (368); the air pump (361) is fixed to the bottom end of the outer connecting ring (2); the left air cylinder (362) and the right air cylinder (363) are respectively installed on both sides of the bottom end of the outer connecting ring (2); an annular limit support plate (364) is installed on the output ends of the left air cylinder (362) and the right air cylinder (363); the sleeve (365) is sleeved on the main support rod (341); an air injection groove (366) is opened inside the sleeve (365); 6) A support inner tube (367) is provided inside the gas injection groove (366), a piston sleeve (368) is installed above the support inner tube (367), the piston sleeve (368) is closely connected to the inner wall of the gas injection groove (366), the output end of the air pump (361) is respectively communicated with the left cylinder (362) and the right cylinder (363) and the gas injection groove (366), a clamping block (331) is provided above the movable seat (33), an insertion groove (121) is provided below the lower well cover (12), a sliding clamping groove is provided at the inner end of the insertion groove (121), the clamping block (331) is slidably clamped with the sliding clamping groove, an arc-shaped slide groove (332) is provided below the movable seat (33), and the arc-shaped slide groove (332) is movably clamped with the positioning rod (35). ; 2. The anti-pressure alarm device of the double-layer intelligent manhole cover located between the inner layer and the outer layer according to claim 1 is characterized in that: The pressure measuring device (4) comprises a pressure plate (41), a pressure rod (42), a detection assembly (43) and a mounting structure (44); a pressure rod (42) is mounted below the upper manhole cover (11); a pressure plate (41) is arranged below the pressure rod (42); a detection assembly (43) is arranged inside the pressure plate (41); the upper manhole cover (11) is mounted inside the external connection ring (2) via the mounting structure (44); an alarm system (5) is arranged inside the manhole cover body (1); the detection assembly (43) comprises a plurality of groups of pressure sensors, and the plurality of groups of pressure sensors are connected to the alarm system (5); the plurality of groups of pressure sensors are arranged on the pressure plate (41), and a pressure sensor is arranged below each group of pressure rods (42); a pressing groove (111) for pressing the pressure rod (42) is provided at the inner end of the upper manhole cover (11); a spring is arranged at the inner end of the pressing groove (111) for docking with the pressure rod (42).

3. The anti-pressure alarm device of the double-layer intelligent manhole cover located between the inner layer and the outer layer according to claim 2 is characterized in that: The mounting structure (44) comprises an upper connecting ring plate (441), an internal bearing (442), a through groove (443), an external clamping block (444) and a bottom supporting plate (445); the outer end of the upper connecting ring plate (441) is fixed in the external connecting ring (2) via the internal bearing (442); the upper connecting ring plate (441) is provided with a through groove (443); the external clamping block (444) is fixed on both sides of the upper manhole cover (11); a bottom supporting plate (445) is provided below the external clamping block (444); and a spring is provided between the inner grooves provided on the bottom supporting plate (445) and the external connecting ring (2).

4. The anti-pressure alarm device of the double-layer intelligent manhole cover located between the inner layer and the outer layer according to claim 3 is characterized in that: The alarm system (5) comprises a control module (51), a processing module (52), a buzzer (53) and an alarm light (54); the control module (51) is connected to the processing module (52), and the buzzer (53) and the alarm light (54) are respectively connected to the control module (51).

5. A method for using the anti-pressure alarm device of the double-layer intelligent manhole cover between the inner and outer layers according to claim 4, characterized in that: The steps include: Step 1: When installing the manhole cover body (1), the lower manhole cover (12) is placed in the outer ring (2), and the upper manhole cover (11) is placed on the upper part of the lower manhole cover (12). After the manhole cover (12) is placed, the driving motor (31) drives the screw rod (32) to rotate, and drives the movable seat (33) to move on the screw rod (32) and the positioning rod (35). The positioning rod (35) is shorter than the screw rod (32). When the clamping block (331) is inserted into the insertion groove (121) below the lower manhole cover (12), the positioning rod (35) moves to the outside of the arc-shaped sliding groove (332), and the screw rod (32) drives the driving movable seat (33) to rotate, so that the clamping block (331) is inserted into the sliding groove; Step 2: When the upper manhole cover (11) is installed, the external clamping block (444) at the side end of the upper manhole cover (11) is arranged below the upper connecting ring plate (441) through the penetration groove (443), and then the upper connecting ring plate (441) is rotated to displace the penetration groove (443) and the external clamping block (444); Step 3: After the manhole cover body (1) is installed, the moving seat (33) moves upward and drives the main support rod (341) to move upward, thereby driving the inner connecting rod (342) to move upward. When the inner connecting rod (342) is supported, the rear end is pressed against the rear plate of the main support rod (341); Step 4: When the upper manhole cover (11) receives pressure, the pressure rod (42) inside the upper manhole cover (11) at the location where the pressure is received squeezes the pressure plate (41) below, and the pressure sensor at the location where the pressure is received transmits the detected pressure value to the processing module (52), and a comparison is performed according to a preset threshold value in the processing module (52). If the pressure value exceeds the qualified value of the pressure resistance, the control module (51) controls the buzzer (53) and the alarm light (54) to sound an alarm.

6. The method for using the anti-pressure alarm device of the double-layer intelligent manhole cover between the inner layer and the outer layer according to claim 5, characterized in that: In step three, the air pump (361) drives the left cylinder (362) and the right cylinder (363) to extend and retract, driving the annular limit support plate (364) to move up and down, and docking with the inner connecting rod (342) for supporting, the air pump (361) injects air into the air injection groove (366) in the sleeve (365), driving the support inner tube (367) and the piston sleeve (368) to move downward, the support inner tube (367) limits the inner connecting rod (342), so that the inner connecting rod (342) and the annular limit support plate (364) are stretched apart, and the inner connecting rod (342) is covered by the support inner tube (367).

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