Rigid-flexible composite temporary well lid

Abstract

The utility model discloses a rigid-flexible composite temporary well lid, and relates to the field of well lids. The rigid-flexible composite temporary well lid comprises a cast iron well lid arranged on the step face of the top of the well wall and an asphalt damping layer arranged on the top face of the cast iron well lid, a plurality of connecting grooves are formed in the top of the cast iron well lid, and bonding layers for connecting the cast iron well lid and the asphalt damping layer are arranged in the connecting grooves. According to the rigid-flexible composite temporary well lid, the asphalt damping layer is arranged on the top of the cast iron well lid, the bonding layer is formed through the bonding agent arranged in the connecting groove in the top of the cast iron well lid, and the cast iron well lid and the asphalt damping layer are connected to form a composite well lid structure; the well lid has the good bearing capacity and stability of a rigid metal well lid and the buffering capacity of the flexible asphalt damping layer, the service life of the well lid is prolonged, and meanwhile noise and vibration generated when vehicles or pedestrians pass by are effectively reduced.

Description

Technical Field

[0001] This application relates to the field of manhole covers, and more particularly, to a rigid-flexible composite temporary manhole cover. Background Art

[0002] During the sectional construction of municipal roads, it is often necessary to temporarily protect inspection wells when the manhole covers have not yet been adjusted to the elevation of the road surface layer. Existing temporary protection manhole covers are mostly made of a single material. For example, although cast iron manhole covers have strong load-bearing capacity, they produce a large amount of noise when vehicles pass over them, and are sensitive to temperature changes and prone to deformation or cracking; while asphalt manhole covers have good shock absorption and noise reduction effects, but their load-bearing capacity is weak and they are easy to break.

[0003] Therefore, a composite manhole cover structure that can not only ensure sufficient load-bearing capacity but also effectively reduce shock and noise is needed to improve the driving comfort of roads. Utility Model Content

[0004] The purpose of this application is to provide a rigid-flexible composite temporary manhole cover, which combines the good load-bearing capacity and stability of a rigid metal manhole cover and the buffering ability of a flexible asphalt shock-absorbing layer, effectively reducing the noise and vibration generated when vehicles or pedestrians pass by while extending the service life of the manhole cover.

[0005] This application is implemented as follows:

[0006] This application provides a rigid-flexible composite temporary manhole cover, which includes a cast iron manhole cover disposed on the step surface at the top of the well wall and an asphalt shock-absorbing layer disposed on the top surface of the cast iron manhole cover. A plurality of connection grooves are provided on the top of the cast iron manhole cover, and an adhesive layer for connecting the cast iron manhole cover and the asphalt shock-absorbing layer is provided in the connection grooves.

[0007] In some alternative embodiments, a ring-shaped rigid manhole cover support seat for supporting the cast iron manhole cover is provided on the top of the step surface. The outer edge of the rigid manhole cover support seat protrudes to form a ring-shaped cover plate that fits the well wall, and the outer wall of the asphalt shock-absorbing layer fits the inner wall of the ring-shaped cover plate.

[0008] In some alternative embodiments, a rigid sleeve is provided between the inner wall of the ring-shaped cover plate and the outer wall of the asphalt shock-absorbing layer.

[0009] In some alternative embodiments, at least one reserved disassembly sleeve that sequentially penetrates the asphalt shock-absorbing layer and the cast iron manhole cover is further included.

[0010] In some alternative embodiments, the cross-section of the reserved disassembly sleeve is strip-shaped and semi-circular expansion parts are respectively formed by expanding outward on both sides of the middle of the reserved disassembly sleeve.

[0011] In some alternative embodiments, an elastic cover plate covering the top of the asphalt shock-absorbing layer, the ring-shaped cover plate, and the rigid sleeve is further included.

[0012] In some alternative embodiments, the bottom of the elastic cover plate is convexly provided with clamping blocks respectively clamped inside each reserved disassembly sleeve.

[0013] In some alternative embodiments, an annular first buffer pad is provided between the stepped surface and the rigid well cover support seat.

[0014] In some alternative embodiments, an annular second buffer pad is provided between the bottom of the cast iron well cover and the top of the rigid well cover support seat.

[0015] In some alternative embodiments, an annular third buffer pad is provided between the inner wall of the annular cover plate and the outer peripheral wall of the cast iron well cover.

[0016] The beneficial effects of the present application are as follows: The rigid-flexible composite temporary well cover provided by the present application includes a cast iron well cover provided on the stepped surface at the top of the well wall and an asphalt shock-absorbing layer provided on the top surface of the cast iron well cover. A plurality of connecting grooves are provided on the top of the cast iron well cover, and an adhesive layer for connecting the cast iron well cover and the asphalt shock-absorbing layer is provided in the connecting grooves. The rigid-flexible composite temporary well cover provided by the present application forms a composite well cover structure by setting an asphalt shock-absorbing layer on the top of the cast iron well cover and connecting the cast iron well cover and the asphalt shock-absorbing layer through an adhesive in the connecting grooves at the top of the cast iron well cover, which can combine the good load-bearing capacity and stability of the rigid metal well cover and the shock-absorbing capacity of the flexible asphalt shock-absorbing layer, effectively reducing the noise and vibration generated when vehicles or pedestrians pass by while extending the service life of the well cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a cross-sectional structural schematic diagram of the rigid-flexible composite temporary well cover provided in Embodiment 1 of the present application when installed on the stepped surface at the top of the well wall;

[0019] Figure 2 It is a top-view structural schematic diagram of the asphalt shock-absorbing layer of the rigid-flexible composite temporary well cover provided in Embodiment 1 of the present application;

[0020] Figure 3 It is a top-view structural schematic diagram of the cast iron well cover of the rigid-flexible composite temporary well cover provided in Embodiment 1 of the present application

[0021] Figure 4 It is a cross-sectional structural schematic diagram of the rigid-flexible composite temporary well cover provided in Embodiment 2 of the present application when installed on the stepped surface at the top of the well wall

[0022] Figure 5 A schematic cross-sectional structure diagram of the rigid-flexible composite temporary manhole cover provided in Embodiment 3 of the present application when installed on the step surface at the top of the well wall.

[0023] In the figure: 100, well wall; 110, step surface; 200, cast iron manhole cover; 201, through hole; 210, asphalt shock-absorbing layer; 220, connection groove; 230, bonding layer; 240, rigid manhole cover support seat; 250, annular cover plate; 260, rigid sleeve; 270, reserved disassembly sleeve; 271, expansion part; 280, elastic cover plate; 290, clamping block; 300, first buffer pad; 310, second buffer pad; 320, third buffer pad. Detailed implementation manners

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated herein can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application that is claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts fall within the scope of protection of the present application.

[0026] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.

[0028] In addition, terms such as "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0029] In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0030] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0031] The features and performance of the rigid-flexible composite temporary manhole cover of the present application will be further described in detail below in conjunction with embodiments.

[0032] Embodiment 1

[0033] Such as Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of the present application provides a rigid-flexible composite temporary manhole cover, which includes a cast iron manhole cover 200 provided on the top step surface 110 of the well wall 100, an asphalt damping layer 210 provided on the top surface of the cast iron manhole cover 200, and two reserved disassembly sleeves 270 with a strip-shaped cross section. Four connecting grooves 220 are provided on the top of the cast iron manhole cover 200, and an adhesive layer 230 for connecting the cast iron manhole cover 200 and the asphalt damping layer 210 is provided in each connecting groove 220. A circular rigid manhole cover support seat 240 for supporting the cast iron manhole cover 200 is provided on the top of the step surface 110. The outer edge of the rigid manhole cover support seat 240 protrudes to form a circular cover plate 250 that fits the well wall 100. The top surface of the circular cover plate 250 is flush with the ground. The outer wall of the asphalt damping layer 210 fits the inner wall of the circular cover plate 250. A rigid sleeve 260 is provided between the inner wall of the circular cover plate 250 and the outer wall of the asphalt damping layer 210. The cast iron manhole cover 200 is provided with through holes 201 for two reserved disassembly sleeves 270 to pass through. The two reserved disassembly sleeves 270 respectively pass through the asphalt damping layer 210 and the through holes on the cast iron manhole cover 200 in sequence. Semi-circular expansion parts 271 are formed by expanding outwards on both sides of the middle of the reserved disassembly sleeve 270. In this embodiment, the asphalt damping layer 210 is asphalt, and the adhesive layer 230 is adhesive. Both the asphalt damping layer 210 and the adhesive layer 230 are structural layers formed by existing materials.

[0034] The rigid-flexible composite temporary manhole cover provided by the embodiment of the present application supports the cast iron manhole cover 200 by setting a rigid manhole cover support seat 240 parallel to the ground on the top step surface 110 of the well wall 100, and makes the outer edge of the rigid manhole cover support seat 240 protrude to form a circular cover plate 250 that fits the well wall 100. An asphalt damping layer 210 is provided on the top surface of the cast iron manhole cover 200, so that the connecting grooves 220 provided on the top of the cast iron manhole cover 200 connect the cast iron manhole cover 200 and the asphalt damping layer 210 through the provided adhesive layer 230, and the outer wall of the asphalt damping layer 210 fits the inner wall of the circular cover plate 250. It can reduce the noise and vibration generated by passing vehicles or pedestrians through the asphalt damping layer 210, and use the cast iron manhole cover 200 and the circular cover plate 250 to support and limit the position of the asphalt damping layer 210, effectively improving the bearing capacity and stability of the composite manhole cover, extending the service life of the manhole cover. Using the rigid manhole cover support seat 240 to support the cast iron manhole cover 200 can facilitate the requirement of keeping the top surface of the asphalt damping layer 210 flush with the ground during installation. The connecting grooves 220 provided on the top of the cast iron manhole cover 200 connect the cast iron manhole cover 200 and the asphalt damping layer 210 through the provided adhesive layer 230, which can ensure the stable connection between the cast iron manhole cover 200 and the asphalt damping layer 210, and avoid the separation of the cast iron manhole cover 200 and the asphalt damping layer 210 caused by the trampling of vehicles and personnel, affecting the normal use of the manhole cover.

[0035] Among them, a rigid sleeve 260 is provided between the inner wall of the annular cover plate 250 and the outer wall of the asphalt shock-absorbing layer 210, which can further utilize the rigid sleeve 260 to limit the position of the asphalt shock-absorbing layer 210 and reinforce the asphalt shock-absorbing layer 210, ensuring that the asphalt shock-absorbing layer 210 stably supports passing vehicles and pedestrians and buffers them.

[0036] The cast iron manhole cover 200 is provided with through holes for two reserved disassembly sleeves 270 to pass through. The two reserved disassembly sleeves 270 respectively pass through the asphalt shock-absorbing layer 210 and the through holes on the cast iron manhole cover 200 in sequence, which can facilitate construction workers to use a lifting tool to pass through the reserved disassembly sleeve 270 to lift the cast iron manhole cover 200 and the asphalt shock-absorbing layer 210 for disassembly and installation of the manhole cover; semi-circular expansion parts 271 are respectively expanded outward on both sides of the middle part of the reserved disassembly sleeve 270, which can increase the contact area between the reserved disassembly sleeve 270 and the asphalt shock-absorbing layer 210, ensuring that the two are stably connected as a whole after the reserved disassembly sleeve 270 passes through the asphalt shock-absorbing layer 210, and preventing the reserved disassembly sleeve 270 from separating from the asphalt shock-absorbing layer 210 when construction workers use a lifting tool to pass through the reserved disassembly sleeve 270 to lift the cast iron manhole cover 200 and the asphalt shock-absorbing layer 210.

[0037] Embodiment 2

[0038] As Figure 4 shown, the embodiment of the present application provides a rigid-flexible composite temporary manhole cover, which has a structure substantially the same as that of the rigid-flexible composite temporary manhole cover provided in Embodiment 1. The difference is that in this embodiment, an annular first buffer pad 300 is provided between the step surface 110 and the rigid manhole cover support seat 240, an annular second buffer pad 310 is provided between the bottom of the cast iron manhole cover 200 and the top of the rigid manhole cover support seat 240, and an annular third buffer pad 320 is provided between the inner wall of the annular cover plate 250 and the outer peripheral wall of the cast iron manhole cover 200.

[0039] The rigid-flexible composite temporary manhole cover provided by the embodiment of the present application can buffer the bottom of the rigid manhole cover support seat 240 by providing an annular first buffer pad 300 between the step surface 110 and the rigid manhole cover support seat 240, avoiding damage to the step surface 110 at the top of the well wall 100 when the rigid manhole cover support seat 240 is stressed. By respectively providing an annular second buffer pad 310 and a third buffer pad 320 at the bottom and the outer peripheral wall of the cast iron manhole cover 200, the impact force of the cast iron manhole cover 200 on the rigid manhole cover support seat 240 and the annular cover plate 250 can be buffered, ensuring that the rigid manhole cover support seat 240 and the annular cover plate 250 stably support the cast iron manhole cover 200 and preventing damage to the rigid manhole cover support seat 240 and the annular cover plate 250 caused by excessive pressure for a long time.

[0040] Embodiment 3

[0041] As Figure 5 shown, the embodiment of the present application provides a rigid-flexible composite temporary manhole cover, which has a structure substantially the same as that of the rigid-flexible composite temporary manhole cover provided in Embodiment 1. The difference is that in this embodiment, it further includes an elastic cover plate 280 covering the top of the asphalt shock-absorbing layer 210, the annular cover plate 250, and the rigid sleeve 260. The top surface of the elastic cover plate 280 is flush with the ground, and the bottom of the elastic cover plate 280 is convexly provided with clamping blocks 290 respectively clamped inside each reserved disassembly sleeve 270.

[0042] By providing the elastic cover plate 280 covering the top of the asphalt shock-absorbing layer 210, the annular cover plate 250, and the rigid sleeve 260, the rigid-flexible composite temporary manhole cover provided by the embodiment of the present application can protect the top of the annular cover plate 250 and the rigid sleeve 260 by using the elastic cover plate 280, avoiding damage to the top of the rigid annular cover plate 250 and the rigid sleeve 260 caused by the trampling of vehicles and pedestrians. At the same time, it can also protect the asphalt shock-absorbing layer 210 from external rigid impact damage by using the elastic cover plate 280, ensuring that the asphalt shock-absorbing layer 210 can be used stably and reliably for a long time, and the elastic cover plate 280 is convenient for replacement after damage.

[0043] Among them, the bottom of the elastic cover plate 280 is convexly provided with clamping blocks 290 respectively clamped inside each reserved disassembly sleeve 270, which can ensure that the elastic cover plate 280 is stably clamped and fixed with the reserved disassembly sleeve 270, so that the elastic cover plate 280 is stably connected to the top of the asphalt shock-absorbing layer 210 for protection, and it is also convenient for construction workers to remove the elastic cover plate 280 to replace it or lift the cast iron manhole cover 200 and the asphalt shock-absorbing layer 210 when needed by overcoming the clamping force between the clamping blocks 290 and the reserved disassembly sleeve 270.

[0044] The bonding layer 230 described in the embodiment of the present application is a structural layer formed by silicone sealant, polyurethane glue, two-component epoxy resin or other connecting glue.

[0045] The above-described embodiments are part of the embodiments of the present application, rather than all embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application to be protected, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the present application.

Claims

1. A rigid-flexible composite temporary manhole cover, characterized in that, It includes a cast iron manhole cover provided on the step surface at the top of the well wall and an asphalt shock-absorbing layer provided on the top surface of the cast iron manhole cover. A plurality of connection grooves are provided at the top of the cast iron manhole cover, and an adhesive layer for connecting the cast iron manhole cover and the asphalt shock-absorbing layer is provided in the connection grooves.

2. The rigid-flexible composite temporary manhole cover according to claim 1, wherein, A ring-shaped rigid manhole cover support seat for supporting the cast iron manhole cover is provided at the top of the step surface. The outer edge of the rigid manhole cover support seat protrudes to form a ring-shaped cover plate that fits the well wall, and the outer wall of the asphalt shock-absorbing layer fits the inner wall of the ring-shaped cover plate.

3. The rigid-flexible composite temporary manhole cover according to claim 2, characterized in that, A rigid sleeve is provided between the inner wall of the ring-shaped cover plate and the outer wall of the asphalt shock-absorbing layer.

4. The rigid-flexible composite temporary manhole cover according to claim 3, wherein, It also includes at least one reserved disassembly sleeve that sequentially penetrates the asphalt shock-absorbing layer and the cast iron manhole cover.

5. The flexible-rigid composite temporary manhole cover according to claim 4, wherein, The cross-section of the reserved disassembly sleeve is strip-shaped, and semicircular expansion parts are respectively expanded outward on both sides of the middle of the reserved disassembly sleeve.

6. The rigid-flexible composite temporary manhole cover according to claim 4, wherein, It also includes an elastic cover plate covering the top of the asphalt shock-absorbing layer, the ring-shaped cover plate and the rigid sleeve.

7. The rigid-flexible composite temporary manhole cover according to claim 6, characterized in that, The bottom of the elastic cover plate is convexly provided with blocks that are respectively clamped inside each of the reserved disassembly sleeves.

8. The flexible and rigid composite temporary manhole cover according to claim 2, characterized in that, A ring-shaped first buffer pad is provided between the step surface and the rigid manhole cover support seat.

9. The flexible-rigid composite temporary manhole cover according to claim 2, wherein A ring-shaped second buffer pad is provided between the bottom of the cast iron manhole cover and the top of the rigid manhole cover support seat.

10. The flexible and rigid composite temporary manhole cover according to claim 2, characterized in that, A ring-shaped third buffer pad is provided between the inner wall of the ring-shaped cover plate and the outer peripheral wall of the cast iron manhole cover.

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