Hidden well lid structure

Abstract

The utility model discloses a hidden type well lid structure which can reduce the color or structure difference between a well lid and a sidewalk, improve the overall coordination and attractiveness of the sidewalk, improve the installation stability of a hidden type well lid and prevent the hidden type well lid from loosening. The hidden well lid structure comprises a cover plate, a frame is arranged on the cover plate in the circumferential direction, the frame is fixedly connected with the cover plate, the top of the frame is fixedly connected with a connecting frame, the connecting frame is arranged in the circumferential direction, a pavement material laying space is defined by the connecting frame and the cover plate, and a leveling layer is laid in the laying space. A leveling layer is arranged on the side frame, a paving layer is paved on the surface of the leveling layer, a protection frame is further arranged on the side frame in the circumferential direction, the protection frame protrudes from the surface of the side frame, the protection frame is fixedly connected with the side frame, and the top of the protection frame extends to the connecting frame.

Description

Technical Field

[0001] This utility model relates to the field of municipal engineering technology, and in particular to a concealed manhole cover structure. Background Technology

[0002] In the construction of municipal roads, power manholes are usually installed on the sidewalks to provide convenient access for the maintenance and repair of electrical equipment. Communication manholes are also installed to facilitate the placement of communication equipment and signal transmission. Power manholes and communication manholes are equipped with corresponding manhole covers to ensure the safety of facilities and equipment, as well as road surface safety.

[0003] Manhole covers for power and communication wells are usually made of cast iron or concrete. When used on sidewalks, the material and color of the manhole cover may not match the material and color of the sidewalk paving material, resulting in color or structural differences that affect the overall coordination and aesthetics of the sidewalk. During use, manhole covers are subjected to vehicle wheels, and the vibrations can cause them to loosen. Once loose, continued exposure to ground loads such as wheels can easily damage the manhole cover, affecting its service life. Utility Model Content

[0004] One of the objectives of this utility model is, at least, to provide a concealed manhole cover structure that can overcome the problems existing in the prior art, reduce the color or structural differences between the manhole cover and the sidewalk, improve the overall coordination and aesthetics of the sidewalk, and also improve the stability of the manhole cover installation and prevent the manhole cover from loosening.

[0005] To achieve the above objectives, the technical solution adopted by this utility model includes the following aspects.

[0006] A concealed manhole cover structure includes: a cover plate, the cover plate having a circumferentially arranged frame, the frame and the cover plate being fixedly connected, a connecting frame being fixedly connected to the top of the frame, the connecting frame being circumferentially arranged, the connecting frame and the cover plate enclosing a paving space for road material, a leveling layer being laid in the paving space, a paving layer being laid on the surface of the leveling layer, and a protective frame also being circumferentially arranged on the frame, the protective frame protruding from the surface of the frame, the protective frame being fixedly connected to the frame, and the top of the protective frame extending to the connecting frame.

[0007] Preferably, the cover plate is provided with a steel reinforcement layer, which is composed of multiple parallel longitudinal bars and multiple parallel transverse bars connected in a grid shape.

[0008] Preferably, the frame has a U-shaped cross-section, with the U-shaped opening facing the cover plate, and the contact portion of the cover plate and the U-shaped opening is embedded in the U-shaped opening; the connecting frame has an L-shaped cross-section, with the bottom edge of the connecting frame welded to the top edge of the frame, and the vertical edge of the connecting frame and the vertical edge of the frame on the same straight line.

[0009] Preferably, the protective frame has an L-shaped cross-section, the vertical side of the protective frame extends upward from the vertical side of the frame to the vertical side of the connecting frame, and the horizontal side of the protective frame is located at the bottom of the vertical side of the protective frame.

[0010] Preferably, the protective frame is further provided with circumferential reinforcing bars, which are perpendicularly connected to the vertical side of the protective frame and parallel to the horizontal side of the protective frame; the reinforcing bars include transverse reinforcing bars and connecting bars, and multiple transverse reinforcing bars perpendicular to the vertical side of the protective frame are fixedly connected circumferentially to the vertical side of the protective frame, and one or more annular connecting bars are fixedly connected to the transverse reinforcing bars, forming a grid.

[0011] Preferably, the cover plate has multiple embedded iron parts, which are vertically arranged and have through holes in the middle. The embedded iron parts are connected to the lifting ring.

[0012] Preferably, the leveling layer is made of M10 cement mortar, the cover plate is made of C25 concrete, the frame is made of 6.3# channel steel, the connecting frame is made of 5# galvanized angle steel, and the protective frame is made of 7# galvanized angle steel.

[0013] Preferably, the bottom of the cover plate is provided with an anti-slip layer, which is a ring structure; a shock-absorbing layer is provided between the leveling layer and the cover plate, or a shock-absorbing layer is provided between the paving layer and the leveling layer.

[0014] Preferably, the anti-slip layer is made of rubber or thermoplastic elastomer material, and the shock-absorbing layer is made of EVA or ACF material.

[0015] Preferably, the height of the cover plate is not higher than the height of the frame, the thickness of the leveling layer is 15~20mm, and the thickness of the paving layer is 20~30mm.

[0016] In summary, by adopting the above technical solution, this utility model has at least the following beneficial effects:

[0017] The cover plate and connecting frame enclose the paving space for the road surface material, allowing for the installation of corresponding road surface materials based on the color and material properties of the existing road. Compared to manhole covers made of cast iron or concrete, this enhances the overall coordination and aesthetics of the sidewalk. The fixed connection between the cover plate and the frame, and the frame and connecting frame, into an integrated structure improves the structural strength of the concealed manhole cover. The concealed manhole cover can be hoisted into place in a single operation, facilitating transportation and installation, reducing the difficulty of installation. The structure of the concealed manhole cover is stable and not easily deformed, enhancing its ability to bear concentrated loads. The connection between the protective frame and the frame improves the bonding force between the concealed manhole cover and the road surface material, enhancing the stability of the concealed manhole cover installation and preventing it from loosening or being damaged due to ground loads such as vibration. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the facade structure of a concealed manhole cover, an exemplary embodiment of this utility model.

[0019] Figure 2 This is a schematic diagram of the facade structure of a second concealed manhole cover, an exemplary embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the planar structure of a concealed manhole cover according to an exemplary embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the planar structure of a concealed manhole cover, which is another exemplary embodiment of the present invention.

[0022] Figure 5 This is a plan view of the assembly of multiple concealed manhole covers, an exemplary embodiment of this utility model.

[0023] Figure 6 This is a schematic diagram of the facade structure of the third type of concealed manhole cover, an exemplary embodiment of this utility model.

[0024] Figure 7 This is a schematic diagram of the fourth concealed manhole cover facade structure of an exemplary embodiment of this utility model.

[0025] Figure 8 This is a schematic diagram of the fifth type of concealed manhole cover facade structure according to an exemplary embodiment of this utility model.

[0026] The markings in the diagram are: 1-cover plate, 2-frame, 3-connecting frame, 4-leveling layer, 5-paving layer, 6-lifting ring, 7-embedded iron parts, 8-reinforcing steel layer, 9-protective frame, 10-well ring, 11-anti-slip layer, 12-shock-absorbing layer, 13-reinforcing rib. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so that the purpose, technical solution and advantages of the present invention will be clearer. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] refer to Figure 1 The concealed manhole cover structure of the exemplary embodiment of this utility model includes a cover plate 1, a frame 2 is provided around the cover plate 1, the frame 2 and the cover plate 1 are fixedly connected, a connecting frame 3 is fixedly connected to the top of the frame 2, the connecting frame 3 is arranged around the circumference, the connecting frame 3 and the cover plate 1 enclose a paving space for road material, a leveling layer 4 is laid in the paving space enclosed by the connecting frame 3 and the cover plate 1, a paving layer 5 is laid on the surface of the leveling layer 4, and a lifting ring 6 is also provided on the cover plate 1 for lifting the concealed manhole cover.

[0029] This utility model's concealed manhole cover, by incorporating a cover plate 1, enhances its load-bearing capacity, prevents damage, and improves its protective effect. A frame 2 surrounds the cover plate 1, protecting its edges and corners from damage. The frame 2, connected to the connecting frame 3 to form an integrated structure, facilitates the overall lifting and transfer of the concealed manhole cover, reducing the difficulty of transportation and installation. The connecting frame 3 and cover plate 1 create a paving space for road materials, allowing for the selection of materials based on the color and material properties of the existing road. The corresponding road surface material ensures that the color, structure, and other characteristics of the surface material of the concealed manhole cover are consistent with the color, structure, and other characteristics of the road surface material, thereby improving the overall coordination and aesthetics of the sidewalk. The leveling layer 4 set in the paving space can reduce the impact of the structural difference between the bottom structure of the connecting frame 3 and the top of the cover plate 1 on the paving layer 5, ensuring the flatness of the paving layer 5 installation. The leveling layer 4 can also fill the gap between the paving layer 5 and the connecting frame 3, improve the stability of the paving layer 5, prevent damage to the paving layer surface under load, and reduce the maintenance cost of the concealed manhole cover.

[0030] The cover plate 1 has a rectangular cross-section and is made of C25 concrete. The cover plate 1 has a steel reinforcement layer 8 inside. The steel reinforcement layer 8 and the concrete are combined to improve the structural strength of the cover plate 1 and further enhance its load-bearing capacity. The protective layer thickness of the steel reinforcement layer 8 is preferably 15mm, but the thickness can be set according to specific needs. The steel reinforcement layer 8 is composed of multiple parallel longitudinal bars and multiple parallel transverse bars connected in a grid shape. The distance between adjacent longitudinal bars is 80~100mm, and the diameter of both longitudinal and transverse bars is 8~10mm.

[0031] The height of the cover plate 1 is not higher than the height of the frame 2 (preferably the same height). The cross-section of the frame 2 is U-shaped. The U-shaped frame 2 can not only protect the cover plate 1, but also facilitate the connection with the connecting frame 3. The U-shaped opening of the frame 2 faces the cover plate 1. The contact part of the cover plate 1 and the U-shaped opening is embedded in the U-shaped opening. The surfaces of the frame 2, the cover plate 1 and other structures of the well opening are flat surfaces, which is conducive to the installation of the concealed well cover. Furthermore, the frame 2 is welded from 6.3# channel steel, which is convenient to obtain materials during construction and helps to save the construction budget of the concealed well cover. The connecting frame 3 has an L-shaped cross-section. The bottom edge of the connecting frame 3 is welded to the top edge of the frame 2 to ensure the stability of the connection between the connecting frame 3 and the frame 2. The vertical edge of the connecting frame 3 and the vertical edge of the frame 2 are preferably on the same straight line. Furthermore, the connecting frame 3 uses 5# galvanized angle steel. Since the connecting frame 3 will come into contact with corrosive substances such as air and water on the road, the use of galvanized angle steel can improve the corrosion resistance of the connecting frame 3 and extend its service life. After the concealed manhole cover is installed, the top of the vertical edge of the connecting frame 3 is covered by the leveling layer 4 and the paving layer 5, which improves the aesthetics of the concealed manhole cover installation.

[0032] The leveling layer 4 is preferably made of M10 cement mortar. The thickness of the leveling layer 4 and the paving layer 5 are set according to the installation requirements of the concealed manhole cover. For example, the thickness of the leveling layer 4 is 15~20mm, and the thickness of the paving layer 5 is 20~30mm. The material of the paving layer 5 is determined according to the paving material of the sidewalk. For example, when the sidewalk uses granite bricks, the paving layer 5 also uses granite bricks. During the use of the concealed manhole cover, the leveling layer 4 and the paving layer 5 can be set in the paving space enclosed by the connecting frame 3 and the cover plate 1, and then the concealed manhole cover can be transported as a whole to the preset installation position for installation. Alternatively, the concealed manhole cover with the paving space can be transported to the preset installation position first, and then the leveling layer 4 and the paving layer 5 can be set on-site in the paving space. Using this method to install the concealed manhole cover can reduce the lifting weight of the concealed manhole cover, reduce the lifting difficulty, and also prevent the concealed manhole cover from being damaged during the lifting process.

[0033] Multiple embedded iron parts 7 are also pre-embedded on the cover plate 1. The position of the embedded iron parts 7 is determined according to the stability of the cover plate 1 during hoisting. The embedded iron parts 7 are set vertically, with their bottoms extending into the bottom of the cover plate 1 and their tops extending vertically out of the top of the cover plate 1. The specific extension height is set according to the installation requirements of the concealed manhole cover (it can also be flush with or extend out of the top of the pavement layer). The embedded iron parts 7 have an axial through hole in the middle, and the lifting ring 6 passes through the through hole to facilitate the hoisting of the concealed manhole cover. The lifting ring 6 can... U-shaped galvanized lifting rings (18-25mm in diameter) are used. The vertical side of each lifting ring 6 passes through two pre-embedded iron parts 7. To improve the stability of the hidden manhole cover hoisting, two lifting rings 6 can be used. When U-shaped galvanized lifting rings are used, each lifting ring 6 can use one or two U-shaped galvanized lifting rings. When two U-shaped galvanized lifting rings are used, after the first one passes through the hidden manhole cover from bottom to top, the second U-shaped galvanized lifting ring and the first U-shaped galvanized lifting ring are welded into a rectangular structure (see reference). Figure 1 This facilitates the hoisting of concealed manhole covers. When the lifting ring 6 uses a U-shaped galvanized lifting ring, a groove can be provided on the manhole ring 10 at the preset manhole position to accommodate the lower structure of the U-shaped galvanized lifting ring. When the concealed manhole cover is hoisted to the preset manhole position, the lower structure of the U-shaped galvanized lifting ring is located within the groove of the manhole ring 10 (see reference). Figure 2 The concealed manhole cover 1 is placed stably on the manhole ring 10. After the concealed manhole cover is hoisted into place, the U-shaped galvanized lifting ring can be left on the concealed manhole cover or removed. The lifting ring 6 can also adopt other structural forms that can hoist the concealed manhole cover. During the hoisting process of the concealed manhole cover, it can also be hoisted directly through the pre-embedded iron parts and the through holes of the pre-embedded iron parts.

[0034] A protective frame 9 can also be provided circumferentially on the frame 2. The protective frame 9 can be welded and fixedly connected to the frame 2. The protective frame 9 is set on the vertical side of the frame 2, located on the side away from the cover plate 1. The cross-sectional shape of the protective frame 9 is L-shaped. The vertical side of the protective frame 9 extends upward from the vertical side of the frame 2 to the vertical side of the connecting frame 3 (it can extend to the top of the vertical side of the connecting frame 3). The horizontal side of the protective frame 9 is located at the bottom of the vertical side of the protective frame 9. After the concealed manhole cover is installed in place, the road surface material is filled around the concealed manhole cover. The road surface material covers the horizontal side of the protective frame 9, which improves the installation stability of the concealed manhole cover and prevents the concealed manhole cover from loosening. The protective frame 9 can be made of 7# galvanized angle steel or other materials.

[0035] Concealed manhole covers can be prefabricated in different shapes to suit the shape of a pre-defined manhole location. For example, refer to... Figure 3 A prefabricated concealed manhole cover with a square cross-section can be used when the manhole opening is large (e.g., both length and width are greater than 1m). Multiple concealed manhole covers with rectangular cross-sections can be prefabricated (see reference). Figure 4 (This refers to assembling multiple rectangular concealed manhole covers together.) Figure 5 To adapt to the wellhead size.

[0036] During the manufacturing process of concealed manhole covers, an anti-slip layer 11 can also be installed at the bottom of the cover plate 1 (see reference). Figure 6 When the concealed manhole cover is installed on the manhole ring 10, the anti-slip layer 11 can prevent the concealed manhole cover from slipping or misaligning, further improving the stability of the concealed manhole cover installation. The anti-slip layer 11 has a ring structure, and the ring width is not greater than the width of the manhole ring 10 (preferably the ring width of the anti-slip layer is equal to the width of the manhole ring). The thickness of the anti-slip layer 11 is 1-3mm, and it can be made of materials such as rubber or thermoplastic elastomers (such as TPU, TPR, etc.). It is preferred to use a wear-resistant TPU material layer. The anti-slip layer 11 can be glued to the bottom of the cover plate 1 and the bottom of the frame 2, as long as the anti-slip layer 11 can be stably installed at the bottom of the concealed manhole cover. A damping layer 12 can also be installed between the leveling layer 4 and the cover plate 1. The damping layer 12 is 2-5mm thick and can be made of EVA or ACF material (preferably ACF). The damping layer 12 has good damping and rebound effects. After the pavement layer 5 is installed, the concealed manhole cover is 1-2mm higher than the road surface. Under the action of the damping layer 12, the concealed manhole cover is compressed, which can minimize the vibration of vehicles passing over the road surface, improve the stability of the concealed manhole cover structure, and prevent damage to the concealed manhole cover. The damping layer 12 can also be set between the pavement layer 5 and the leveling layer 4 (see reference). Figure 7 ).

[0037] The protective frame 9 is also provided with circumferential reinforcing ribs 13, for reference. Figure 8 The reinforcing rib 13 is perpendicularly connected to the vertical side of the protective frame 9, and parallel to the horizontal side of the protective frame 9. During the installation of the concealed manhole cover, when filling with road material or concrete, the road material or concrete can also enter between the reinforcing rib 13 and the horizontal side of the protective frame 9, making the concealed manhole cover and the road surface form an integral structure, further improving the stability of the concealed manhole cover installation. The reinforcing rib 13 can be made of steel bars (or steel plates), that is, multiple horizontal steel bars perpendicular to the vertical side of the protective frame 9 are circumferentially fixedly connected (welded) to the vertical side of the protective frame 9, and then one or more ring-shaped connecting bars are fixedly connected to the horizontal steel bars, so that the horizontal steel bars and connecting bars form a grid, further increasing the bonding force between the concealed manhole cover and the road surface and preventing the concealed manhole cover from loosening. During application, the length of the reinforcing rib 13 and / or the horizontal side of the protective frame 9 can be adjusted according to the installation stability requirements of the concealed manhole cover.

[0038] The above description is merely a detailed illustration of specific embodiments of this utility model, and not a limitation thereof. Various substitutions, modifications, and improvements made by those skilled in the art without departing from the principles and scope of this utility model should be included within the protection scope of this utility model.

Claims

1. A concealed manhole cover structure, characterized in that, include: A cover plate (1) is provided with a frame (2) around its perimeter. The frame (2) and the cover plate (1) are fixedly connected. A connecting frame (3) is fixedly connected to the top of the frame (2). The connecting frame (3) is arranged around its perimeter. The connecting frame (3) and the cover plate (1) enclose a paving space for the road material. A leveling layer (4) is laid in the paving space. A paving layer (5) is laid on the surface of the leveling layer (4). A protective frame (9) is also provided around the frame (2). The protective frame (9) protrudes from the surface of the frame (2). The protective frame (9) is fixedly connected to the frame (2). The top of the protective frame (9) extends to the connecting frame (3).

2. The concealed manhole cover structure according to claim 1, characterized in that, The cover plate (1) is provided with a steel reinforcement layer (8), which is composed of multiple parallel longitudinal bars and multiple parallel transverse bars connected in a grid shape.

3. The concealed manhole cover structure according to claim 1, characterized in that, The cross-section of the frame (2) is U-shaped, and the U-shaped opening of the frame (2) faces the cover plate (1). The contact part of the cover plate (1) and the U-shaped opening is embedded in the U-shaped opening. The cross-sectional shape of the connecting frame (3) is L-shaped. The bottom edge of the connecting frame (3) is welded to the top edge of the frame (2). The vertical edge of the connecting frame (3) and the vertical edge of the frame (2) are on the same straight line.

4. The concealed manhole cover structure according to claim 3, characterized in that, The protective frame (9) has an L-shaped cross-section. The vertical side of the protective frame (9) extends upward from the vertical side of the frame (2) to the vertical side of the connecting frame (3). The horizontal side of the protective frame (9) is located at the bottom of the vertical side of the protective frame (9).

5. The concealed manhole cover structure according to claim 4, characterized in that, The protective frame (9) is also provided with reinforcing bars (13) in the circumferential direction. The reinforcing bars (13) are perpendicularly connected to the vertical side of the protective frame (9) and parallel to the horizontal side of the protective frame (9). The reinforcing bars (13) include horizontal steel bars and connecting bars. Multiple horizontal steel bars perpendicular to the vertical side of the protective frame (9) are fixedly connected in the circumferential direction to the vertical side of the protective frame (9). One or more ring-shaped connecting bars are fixedly connected to the horizontal steel bars. The horizontal steel bars and connecting bars form a grid.

6. The concealed manhole cover structure according to claim 1, characterized in that, The cover plate (1) has multiple embedded iron parts (7) embedded in it. The embedded iron parts (7) are vertically arranged and have through holes in the middle. The embedded iron parts (7) are connected to the lifting ring (6).

7. The concealed manhole cover structure according to claim 1, characterized in that, The leveling layer (4) is made of M10 cement mortar, the cover plate (1) is made of C25 concrete; the frame (2) is made of 6.3# channel steel, the connecting frame (3) is made of 5# galvanized angle steel, and the protective frame (9) is made of 7# galvanized angle steel.

8. The concealed manhole cover structure according to claim 1, characterized in that, The bottom of the cover plate (1) is provided with an anti-slip layer (11), which is a ring structure; a shock-absorbing layer (12) is provided between the leveling layer (4) and the cover plate (1) or a shock-absorbing layer (12) is provided between the paving layer (5) and the leveling layer (4).

9. The concealed manhole cover structure according to claim 8, characterized in that, The anti-slip layer (11) is made of rubber or thermoplastic elastomer material, and the shock-absorbing layer (12) is made of EVA or ACF material.

10. The concealed manhole cover structure according to any one of claims 1 to 9, characterized in that, The height of the cover plate (1) is not higher than the height of the frame (2), the thickness of the leveling layer (4) is 15~20mm, and the thickness of the paving layer (5) is 20~30mm.

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