Easily-repaired flexible hidden well lid for urban asphalt pavement

Abstract

The invention belongs to the technical field of municipal road pipeline engineering construction, and particularly relates to an easy-to-repair flexible hidden well lid for an urban asphalt pavement, the easy-to-repair flexible hidden well lid comprises an outer well lid and an inner well lid, the outer well lid is made of thermoplastic polyurethane elastomer rubber, and the upper edge of the outer well lid integrally extends outwards to form a buffer sealing edge; the inner well lid is installed on the shaft containing groove, and the upper surface of the inner well lid is flush with the upper surface of the shaft. The manhole cover further comprises an electromagnetic opening tool, adsorption points are arranged on the two sides of the electromagnetic opening tool, opening points are symmetrically arranged in the edge of the outer manhole cover, and the adsorption points correspond to the opening points. The outer well lid is made of thermoplastic polyurethane elastomer rubber, the outer well lid made of the material and the asphalt pavement layer jointly form a road driving bearing structure, and compared with well lids made of hard materials such as cast iron, the hardness of the outer well lid is closer to that of the asphalt pavement layer; and the edge of the asphalt surface layer around the outer well lid is prevented from becoming a structural weak point to cause damage.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal road pipeline engineering construction, and in particular relates to an easily repairable flexible hidden manhole cover for urban asphalt pavement. Background Art

[0002] In the existing pipeline construction, the road surface around the manhole cover is a weak point in the road structure, and there are a series of problems such as loose manhole covers, sinking manhole covers, and damage to the manhole ring and surrounding road surfaces. The damage of urban manhole covers is also accompanied by a series of safety issues, such as: leakage of toxic and harmful gases in sewage pipes, vehicles and pedestrians falling into inspection wells, etc. The commonly used maintenance methods for damaged manhole covers include: repairing and reinforcing the road surface, replacing manhole covers, etc. These operations generally require interrupting traffic, the maintenance cost is high, and it cannot prevent the problem of manhole covers and surrounding road surfaces from being damaged again. With the development and application of new materials, new energy and intelligent construction technologies, the structure of manhole covers has the possibility of iterative development. Therefore, municipal road pipeline projects require new forms of manhole covers to eliminate the above problems. Summary of the invention

[0003] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide an easy-to-repair flexible hidden manhole cover for urban asphalt pavement.

[0004] The present invention is achieved through the following technical solutions: The invention discloses an easy-to-repair flexible hidden manhole cover for urban asphalt pavement, comprising an outer manhole cover and an inner manhole cover, wherein the outer manhole cover is made of thermoplastic polyurethane elastomer rubber, and is placed on a manhole. The upper surface of the outer manhole cover is an arc-shaped surface which is high in the middle and low on both sides, and the diameter of the outer manhole cover gradually decreases downward from the side surface, and the upper edge of the outer manhole cover extends outward as a whole to form a buffer seal, and the upper surface of the buffer seal smoothly transitions to the upper surface of the outer manhole cover, and the thickness of the buffer seal gradually decreases outward until it is flush with the upper surface of the asphalt pavement; a placement groove is provided on the inner side of the upper part of the manhole, and the inner manhole cover is installed on the manhole placement groove, the diameter of the inner manhole cover is equal to the outer diameter of the placement groove, and the upper surface of the inner manhole cover is flush with the upper surface of the manhole; and an electromagnetic opening tool is also included, and adsorption points are provided on both sides of the electromagnetic opening tool, and the opening points are symmetrically built-in inside the edge of the outer manhole cover, and the adsorption points correspond to the opening points.

[0005] As a further solution, the outer manhole cover has a built-in power module, a pressure sensor, a control module, and a communication module. The pressure sensor, the control module, and the communication module are all connected to the power module line, the pressure sensor is connected to the control module line, and the control module is connected to the communication module line; the pressure sensor transmits the external pressure and pressure number information to the control module; the control module transmits the received pressure sensor information to the communication module; the communication module is wirelessly connected to the terminal management device, and the communication module transmits the received control module information to the terminal management device.

[0006] As a further solution, an LED light strip is built into the edge of the outer manhole cover, and the LED light strip is connected to the control module circuit; a gas composition analyzer is installed on the bottom surface of the inner manhole cover, and corresponding contacts are provided on the upper surface of the inner manhole cover and the bottom surface of the outer manhole cover, and a channel for the circuit to pass through is provided on the inner manhole cover, and the contacts on the upper surface of the inner manhole cover are connected to the gas composition analyzer through the circuit, and the contacts on the lower surface of the outer manhole cover are connected to the control module through the circuit; the gas composition analyzer can analyze the gas composition and concentration in the wellbore, and transmit the gas composition and concentration information to the control module, and the control module transmits the transmitted gas composition and concentration information to the terminal management device through the communication module. At the same time, when the gas concentration exceeds the gas concentration threshold set in the control module, the control module turns on the LED light strip for warning.

[0007] Preferably, the opening point is made of metal material.

[0008] Preferably, the diameter of the upper end of the outer manhole cover is 10 mm larger than the diameter of the lower end.

[0009] Preferably, the thickness of the outer manhole cover in the middle is 60 mm.

[0010] Preferably, the inner manhole cover is made of UHPC high performance concrete.

[0011] Preferably, the highest point of the buffer edge sealing is 5 mm higher than the upper surface of the asphalt pavement.

[0012] Preferably, the outer surface of the outer manhole cover is provided with anti-slip grooves.

[0013] Preferably, the power module is a solar panel power module.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The outer manhole cover is made of thermoplastic polyurethane elastomer rubber. The outer manhole cover of this material and the asphalt pavement layer together constitute a road traffic bearing structure. Compared with the manhole cover made of hard materials such as cast iron, the hardness of the outer manhole cover of the present invention is closer to that of the asphalt pavement layer, which prevents the edge of the asphalt surface layer around the outer manhole cover from becoming a structural weak point and causing damage.

[0015] 2. The slope of the side wall of the outer manhole cover optimizes the vertical traffic load transmitted from the outer manhole cover to the asphalt surface layer and avoids shear damage at the edge of the asphalt surface layer.

[0016] 3. The outer manhole cover is equipped with a buffer edge to protect the road surface around the outer manhole cover from direct impact from objects such as wheels.

[0017] Fourth, the outer manhole cover is made of transparent material, which has an aesthetic effect, and at the same time, due to the use of transparent material, a solar panel power module can be installed inside.

[0018] 5. An LED light strip is installed inside the outer manhole cover, which can warn vehicles and pedestrians in emergency situations to prevent accidents.

[0019] 6. The outer manhole cover and the inner manhole cover have the functions of monitoring the gas composition in the well, external pressure monitoring, and data transmission to meet the management needs of the intelligent platform.

[0020] 7. The inner manhole cover is made of UHPC high-performance concrete, which reduces steel consumption and saves resources.

[0021] 8. The outer manhole cover is opened with an electromagnetic opening tool to avoid safety hazards caused by human error in opening the outer manhole cover; if the outer manhole cover structure is damaged, it is easy to replace without affecting the road driving function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic cross-sectional view of the structure of this embodiment; Figure 2 This is a schematic diagram of the top view of the structure of this embodiment; Figure 3 for Figure 1 The enlarged structural diagram of part A in the middle; Figure 4 This is a schematic diagram of the structure of the electromagnetic opening tool in this embodiment.

[0023] In the figure, 1 is an outer manhole cover, 2 is an inner manhole cover, 3 is a wellbore, 4 is a control module, 5 is a pressure sensor, 6 is a communication module, 7 is an LED light strip, 8 is a gas composition analyzer, 9 is a contact, 10 is a placement slot, 11 is a buffer edge seal, 12 is an opening point, 13 is an electromagnetic opening tool, 14 is a power module, and 15 is an asphalt pavement. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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.

[0025] This embodiment includes an outer manhole cover 1 and an inner manhole cover 2. The outer manhole cover 1 is made of thermoplastic polyurethane elastomer rubber. Thermoplastic polyurethane elastomer rubber (TPU) is a unique material with excellent load-bearing capacity, impact resistance and shock absorption performance, as well as excellent wear resistance, good elasticity, excellent cold resistance and water resistance. The outer manhole cover 1 is placed on the shaft 3. The outer manhole cover 1 is used to carry and transfer vehicle loads to ensure the function of road traffic. The upper surface of the outer manhole cover 1 is an arc-shaped surface that is higher in the middle and slightly lower on both sides. The height of the highest point in the middle of the outer manhole cover 1 is 2-5mm higher than the height of the lowest point on both sides. Preferably, the thickness of the middle position of the outer manhole cover 1 is 60mm. In this embodiment, the side wall of the outer manhole cover 1 is provided with a slope, that is, the diameter of the side of the outer manhole cover 1 gradually decreases downward, and the vertical section of the outer manhole cover 1 is trapezoidal in shape as a whole. Preferably, the diameter of the upper end of the outer manhole cover 1 is 10 mm larger than the diameter of the lower end. The vertical adjacent interface between the outer manhole cover 1 and the asphalt pavement 15 is set to a slope type, so that the bottom tensile stress and shear stress generated by the upper vehicle load are decomposed in a manner consistent with the stress characteristics of the asphalt concrete pavement material, protecting the edge of the asphalt pavement 15 from shear failure. In order to increase the anti-skid property of the outer manhole cover 1, it is preferred that the outer surface of the outer manhole cover 1 is provided with anti-skid patterns.

[0026] The upper edge of the outer manhole cover 1 integrally extends outwardly to form a buffer seal 11, and the upper surface of the buffer seal 11 is smoothly transitioned with the upper surface of the outer manhole cover 1, and the thickness of the buffer seal 11 gradually decreases outward until it is flush with the upper surface of the asphalt pavement 15. In this embodiment, the highest point of the buffer seal 11 is preferably 5mm higher than the upper surface of the asphalt pavement 15, that is, the thickest part of the buffer seal 11 is 5mm, and the width of the buffer seal 11 set in this embodiment is 150mm. The buffer seal 11 can protect the asphalt pavement 15 around the outer manhole cover 1 from being directly crushed by wheels.

[0027] The outer manhole cover 1 of the present invention is opened by an electromagnetic opening tool 13. The electromagnetic opening tool 13 used in this embodiment is an inverted U-shaped electromagnetic opening tool 13. Figure 4 As shown, adsorption points are provided on both sides of the electromagnetic opening tool 13, and correspondingly, an opening point 12 is symmetrically built-in inside the edge of the outer manhole cover 1, and the adsorption points correspond to the opening points 12, and the opening points 12 are preferably made of metal material. Electromagnetic adsorption is a widely used technology, and will not be described in detail here.

[0028] The inner manhole cover 2 of this embodiment is installed on the placement groove 10 of the shaft 3, and the upper surface of the inner manhole cover 2 is flush with the upper surface of the shaft 3. Preferably, the inner manhole cover 2 is made of UHPC high-performance concrete, and the inner manhole cover 2 should comply with the provisions of the national standard "Inspection Manhole Cover" (GB / T23858-2009). A placement groove 10 is provided on the inner side of the upper part of the shaft 3. The diameter of the inner manhole cover 2 is equal to the outer diameter of the placement groove 10, and the inner manhole cover 2 is just placed on the placement groove 10. The inner manhole cover 2 can also be opened by using an electromagnetic opening tool 13, and an opening point 12 corresponding to the adsorption point is provided on the inner manhole cover 2, or it can be opened by using an ordinary manhole cover opening hole. There is no special restriction here.

[0029] In order to further promote the development and application of intelligent construction technology, as a further solution, the present embodiment has a power module 14, a pressure sensor 5, a control module 4, and a communication module 6 built into the outer manhole cover 1. These components can be made into an integral part with the outer manhole cover 1 when they are manufactured at the factory. The pressure sensor 5, the control module 4, and the communication module 6 are all connected to the power module 14 line, and the power module 14 provides the required power. Since the outer manhole cover 1 is made of transparent material, the power module 14 of the present invention can preferably adopt a solar panel power module, which includes a solar panel and an energy storage module. The energy storage module can store excess power during the day for use at night. The built-in pressure sensor 5 is connected to the control module 4 line, and the control module 4 is connected to the communication module 6 line. The pressure sensor 5 transmits the external pressure and the number of times of pressure to the control module 4, and then the control module 4 transmits the received pressure sensor 5 information to the communication module 6. The communication module 6 is wirelessly connected to the terminal management device, and the communication module 6 wirelessly transmits the received pressure sensor 5 information transmitted by the control module 4 to the terminal management device, so that the collection of traffic data can be realized. The terminal management device can be a terminal such as a computer or a mobile device.

[0030] As a further solution, a gas composition analyzer 8 can be installed in some wells where toxic and harmful gases may exist. Specifically, an LED light strip 7 is built into the edge of the outer manhole cover 1, and the LED light strip 7 is connected to the control module 4. The control module 4 can control the switch of the LED light strip 7. A gas composition analyzer 8 is installed on the bottom surface of the inner manhole cover 2, and the gas composition analyzer 8 can be used to analyze the gas composition and concentration in the wellbore 3. Corresponding contacts 9 are provided on the upper surface of the inner manhole cover 2 and the bottom surface of the outer manhole cover 1. The contacts 9 on the upper surface of the inner manhole cover 2 are connected to the gas composition analyzer 8, and the contacts 9 on the bottom surface of the outer manhole cover 1 are connected to the control module 4 through the line. The gas composition analyzer 8 is connected to the control module 4 through the contact of the two contacts 9. Therefore, when the outer manhole cover 1 is placed on the inner manhole cover 2, the upper and lower contacts 9 need to be aligned and installed. Specifically, a hole for the line to pass through is provided on the inner manhole cover 2, and the contact 9 on the upper surface of the inner manhole cover 2 is connected to the gas composition analyzer 8 through the line passing through the hole, and then connected to the control module 4 through the contact 9 on the lower surface of the outer manhole cover 1 through the line built into the outer manhole cover 1. The gas composition analyzer 8 transmits the gas composition and concentration information to the control module 4, and the control module 4 transmits the transmitted gas composition and concentration information to the terminal management device through the communication module 6. At the same time, the concentration threshold of certain gases is set in the control module 4. The gas with the set concentration threshold is toxic and harmful gas. Most of the toxic and harmful gases in the well are methane, hydrogen sulfide, carbon monoxide, ammonia, etc. The gas concentration threshold set in the control module 4 refers to the threshold of these common toxic and harmful gases in the well, and can be set specifically according to the well type during actual operation. When the concentration of certain gases exceeds the gas concentration threshold set in the control module 4, the control module 4 turns on the LED light strip 7 for warning.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An easily repairable flexible hidden manhole cover for urban asphalt pavement, comprising an outer manhole cover (1) and an inner manhole cover (2), characterized in that: The outer manhole cover (1) is made of thermoplastic polyurethane elastomer rubber. The outer manhole cover (1) is placed on the manhole (3). The upper surface of the outer manhole cover (1) is an arc-shaped surface with a high middle and low sides. The diameter of the side of the outer manhole cover (1) gradually decreases downward. The upper edge of the outer manhole cover (1) extends outward as a buffer seal (11). The upper surface of the buffer seal (11) smoothly transitions with the upper surface of the outer manhole cover (1). The thickness of the buffer seal (11) gradually decreases outward until it is aligned with the upper surface of the asphalt pavement (15). The wellbore (3) is provided with a placement groove (10) on the inner side of the upper part, the inner well cover (2) is installed on the placement groove (10) of the wellbore (3), the diameter of the inner well cover (2) is equal to the outer diameter of the placement groove (10), and the upper surface of the inner well cover (2) is flush with the upper surface of the wellbore (3); and it also includes an electromagnetic opening tool (13), adsorption points are provided on both sides of the electromagnetic opening tool (13), and opening points (12) are symmetrically built-in inside the edge of the outer well cover (1), and the adsorption points correspond to the opening points (12).

2. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to claim 1 is characterized in that: The outer manhole cover (1) has a built-in power module (14), a pressure sensor (5), a control module (4), and a communication module (6); the pressure sensor (5), the control module (4), and the communication module (6) are all connected to the power module (14) circuit, the pressure sensor (5) is connected to the control module (4) circuit, and the control module (4) is connected to the communication module (6) circuit; the pressure sensor (5) transmits information about the external pressure and the number of times of pressure exposure to the control module (4); the control module (4) transmits information received from the pressure sensor (5) to the communication module (6); the communication module (6) is wirelessly connected to the terminal management device, and the communication module (6) transmits information received from the control module (4) to the terminal management device.

3. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to claim 2 is characterized in that: The outer manhole cover (1) has an LED light strip (7) built into the edge thereof, and the LED light strip (7) is connected to the control module (4) by a circuit. The bottom surface of the inner manhole cover (2) is provided with a gas composition analyzer (8), and corresponding contacts (9) are provided on the upper surface of the inner manhole cover (2) and the bottom surface of the outer manhole cover (1). The inner manhole cover (2) is provided with a hole for the circuit to pass through, and the contacts (9) on the upper surface of the inner manhole cover (2) are connected to the gas composition analyzer (8) through a circuit, and the contacts (9) on the lower surface of the outer manhole cover (1) are connected to the control module (4) through a circuit. The gas composition analyzer (8) can analyze the gas composition and concentration in the wellbore (3), and transmit the gas composition and concentration information to the control module (4). The control module (4) transmits the transmitted gas composition and concentration information to the terminal management device through the communication module (6). At the same time, when the gas concentration exceeds the gas concentration threshold value set in the control module (4), the control module (4) turns on the LED light strip (7) to issue a warning.

4. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The opening point (12) is made of metal material.

5. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The diameter of the upper end of the outer manhole cover (1) is 10 mm larger than the diameter of the lower end.

6. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The thickness of the middle position of the outer manhole cover (1) is 60 mm.

7. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The inner manhole cover (2) is made of UHPC high-performance concrete.

8. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The highest point of the buffer edge seal (11) is 5 mm higher than the upper surface of the asphalt pavement (15).

9. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The outer surface of the outer manhole cover (1) is provided with anti-slip patterns.

10. The easily repairable flexible hidden manhole cover for urban asphalt pavement according to any one of claims 1 to 3, characterized in that: The power module (14) is a solar panel power module.

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