Buffering and damping type invisible well lid

Abstract

According to the specific structure, the buffering and damping type invisible well lid comprises an external lid body, the interior of the external lid body is divided into a buffering layer and a pressure reduction layer, a plurality of elastic pieces are arranged in the buffering layer in an array mode, the pressure reduction layer comprises a pressure reduction grating plate, a plurality of pressure reduction holes are formed in the surface of the pressure reduction grating plate in an array mode, and the pressure reduction holes communicate with an internal pressure reduction cavity; the sectional area of the bottom face of the pressure reduction cavity is smaller than that of the pressure reduction hole, a panel layer is arranged above the pressure reduction layer, the panel layer is flush with the upper surface of the external cover body, the thickness of the panel layer is far smaller than that of the pressure reduction layer, and by arranging the elastic pressure reduction grating plate and the buffer layer, the effects of prolonging the service life and reducing the stress of the bottom face are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of invisible manhole covers, and in particular to a buffering and shock-absorbing invisible manhole cover. Background Art

[0002] The invisible manhole cover is a new type of municipal manhole cover standard product used in road traffic. Compared with traditional manhole covers, it has better privacy and can ensure the smoothness of the road surface.

[0003] During the use of the invisible manhole cover, since it has an external cover body with a huge placement groove, it can be embedded in the hole dug in the ground for the manhole cover, and the hole is filled with stones and other fillings that are consistent with the color of the ground so that the highest point of the pottery and the external cover body are aligned, which not only serves as a manhole cover, but also ensures the smoothness of the road surface.

[0004] Regarding the related technologies mentioned above, the inventor believes that under the existing invisible manhole cover technology, since the inside of the groove needs to be filled with a large amount of stone, the external cover body itself will be under huge pressure. The external cover body itself is made of metal material and has a certain ductility. Under huge pressure, when pedestrians or motor vehicles on the road continue to press on the manhole cover, the external cover body of the manhole cover itself will deform, causing damage to it. Therefore, there is a problem that the huge internal pressure causes the external cover body to deform and affects its use. Summary of the invention

[0005] The purpose of the present application is to provide a buffering and shock-absorbing invisible manhole cover to improve the problem that the invisible manhole cover is easily deformed.

[0006] The present application provides a buffering and shock-absorbing invisible manhole cover adopts the following technical solution:

[0007] A buffering and shock-absorbing invisible manhole cover comprises an external cover body, the inner part of the external cover body is a buffer layer and a pressure reduction layer, a plurality of elastic members are arranged in an array inside the buffer layer, the pressure reduction layer comprises a pressure reduction grid plate, a plurality of pressure reduction holes are arranged in an array on the surface of the pressure reduction grid plate, the pressure reduction holes are connected to an internal pressure reduction cavity, the bottom cross-sectional area of ​​the pressure reduction cavity is smaller than the cross-sectional area of ​​the pressure reduction holes, a panel layer is arranged above the pressure reduction layer, the panel layer is flush with the upper surface of the external cover body, and the thickness of the panel layer is much smaller than the thickness of the pressure reduction layer.

[0008] By adopting the above technical solution, a pressure-reducing grid plate is arranged on the elastic member with elastic properties, which greatly reduces the amount of internal stone retention, reduces the pressure on the ground of the external cover, does not reduce the excessive contact area with the stone, and improves the service life of the external cover.

[0009] Optionally, a plurality of support frames protrude from the upper surface of the pressure reducing grid plate, the top ends of the support frames abut against the surface of the panel layer, and the support frames, the pressure reducing grid plate and the support frames are integrally formed.

[0010] By adopting the above technical solution, the support frame can support the stones on the top layer, ensuring that the force on the surface of the stones is uniform and that cracking caused by uneven force will not occur.

[0011] Optionally, the pressure-reducing grid plate has elastic deformation performance, and the surface area of ​​the upper surface of the support frame is larger than the surface area of ​​the bottom surface of the support frame.

[0012] By adopting the above technical solution, the pressure reducing grid plate has elastic deformation performance and a cross-section with a larger upper part and a smaller lower part. It can increase the contact area with the stone while buffering the gravity of the stone and diverting the pressure on the stone surface.

[0013] Optionally, a plurality of limiting members are provided on the inner side wall of the external cover body, and the pressure reducing grid plate is embedded between two adjacent limiting members.

[0014] By adopting the above technical solution, it is ensured that the step-down grille can be accurately positioned at the position where it needs to be fixed, thus playing a positioning role.

[0015] Optionally, a limiting guide surface is provided on the surface of each of the limiting members, and the limiting guide surface is inclined toward the inner side wall of the external cover body along the placement direction of the pressure reduction grid plate.

[0016] By adopting the above technical solution, it is ensured that the pressure-reducing grille can be easily prevented from being inside the inner cavity of the external cover during installation, thereby improving the installation efficiency.

[0017] Optionally, the buffer layer further includes an elastic placement plate, the elastic placement plate abuts against the bottom surface of the pressure reducing grid plate, and a plurality of the elastic members abut against the bottom surface of the elastic placement plate.

[0018] By adopting the above technical solution, the contact area between the pressure reducing grid plate and the elastic member is increased, and the elastic force of several elastic members is evenly diffused to the pressure reducing grid plate, thereby further improving the buffering capacity.

[0019] Optionally, the elastic deformation performance of the elastic member is smaller than the elastic deformation performance of the elastic placement plate.

[0020] By adopting the above technical solution, it is ensured that the elastic deformation of the elastic placement plate takes precedence over the elastic deformation of the elastic member, thereby eliminating the waste of elastic performance and improving the overall elastic buffering capacity.

[0021] Optionally, a plurality of pouring grooves are provided on the surface of the external cover.

[0022] By adopting the above technical solution, it is possible to prevent the internal grid plate and elastic parts from being damp or corroded by water for a long time due to internal water ingress, thereby reducing the buffering effect.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Reduce the overall quality of the external cover, reduce the pressure on the bottom plate of the external cover, increase the service life of the external cover, and prevent deformation that affects its use;

[0025] 2. Set up several layers of structures with elastic properties, which can form a counterforce when a force is applied to the stone surface, further buffering the pressure received by the bottom plate of the external cover;

[0026] 3. Set up a limiting structure to ensure the accurate placement of the internal core pressure reduction grid plate and ensure the normal use of the function. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the utility model.

[0028] Figure 2 It is a structural schematic diagram of part of the utility model.

[0029] Figure 3 It is a cross-sectional view of the utility model.

[0030] In the figure,

[0031] 1. External cover; 11. Position limiting member; 12. Position limiting guide surface; 13. Drainage trough;

[0032] 2. Buffer layer; 21. Elastic member; 22. Elastic placement plate;

[0033] 3. Pressure reduction layer; 31. Pressure reduction grid plate; 32. Pressure reduction hole; 33. Pressure reduction cavity; 34. Support frame;

[0034] 4. Panel layer. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0036] A buffer shock absorbing invisible manhole cover, referring to Figure 1-3, including an external cover body 1, which is divided into a buffer layer 2 and a pressure reduction layer 3 inside the external cover body 1, wherein the buffer layer 2 can buffer the pressure on the top, and the pressure reduction layer 3 can reduce the overall pressure on the inner side of the external cover body 1, greatly reducing the magnitude of the force acting on the inner bottom surface of the external cover body 1, and a panel layer 4 is arranged above the pressure reduction layer 3. The panel layer 4 is used for placing slate stones flush with the ground, placing the interior of the external cover body 1 in direct contact with the surface pressure and ensuring the flatness of the surface. The thickness of the panel layer 4 is much smaller than that of the pressure reduction layer 3, which can greatly reduce the overall quality.

[0037] Reference Figure 1-3 The pressure reducing layer 3 includes a pressure reducing grid plate 31. The pressure reducing grid plate 31 can reduce the overall mass and reduce the pressure of the panel layer 4 on the inner bottom wall of the external cover body 1. A plurality of pressure reducing holes 32 are arranged in an array on the surface of the pressure reducing grid plate 31. The pressure reducing holes 32 are connected to the internal pressure reducing cavity 33. The bottom cross-sectional area of ​​the pressure reducing cavity 33 is smaller than the cross-sectional area of ​​the pressure reducing holes 32, which increases the placement area of ​​the surface of the pressure reducing grid plate 31, spreads the force, and reduces the pressure per unit area. A plurality of support frames 34 protrude from the upper surface of the pressure reducing grid plate 31. The support frames 3 4 is in contact with the surface of the panel layer 4, the support frame 34 and the pressure reducing grid plate 31 and the support frame 34 are integrally formed, which improves the supporting force of the pressure reducing grid plate 31 and further reduces the pressure of the panel layer 4 on the bottom, the pressure reducing grid plate 31 has elastic deformation performance, the surface area of ​​the upper surface of the support frame 34 is greater than the surface area of ​​the bottom surface of the support frame 34, the pressure reducing grid plate 31 is set to a plastic material with elastic deformation performance, and the support frame 34 is integral with it and is also made of the same material, which increases the force-bearing area and reduces the surface pressure.

[0038] Reference Figure 1-3 The buffer layer 2 is provided with a plurality of elastic members 21 in an array inside. The elastic members 21 are made of plastic material and have good elastic deformation performance. The buffer layer 2 also includes an elastic placement plate 22. The elastic members 21 are fixed on the ground of the elastic placement plate 22. The elastic placement plate 22 and the bottom surface of the pressure reducing grid plate 31 are in contact with each other. The plurality of elastic members 21 and the bottom surface of the elastic placement plate 22 are in contact with each other, thereby realizing an elastic buffer space between the pressure reducing grid plate 31 and the external cover body 1. The elastic deformation performance of the elastic member 21 is less than that of the elastic placement plate 22. The elastic placement plate 22 is made of sponge or a material with high elasticity and high softness, so as to realize the effect of first deformation and then acting on the elastic member 21 when the force is too large, thereby increasing the buffering capacity of the buffer layer 2.

[0039] Reference Figure 1-3A plurality of limit members 11 are provided on the inner wall of the external cover body 1, and the limit members 11 correspond to the gaps on the sides of the pressure reducing grid plate 31, and can adapt to the placement of the pressure reducing grid plate 31. The pressure reducing grid plate 31 is embedded between two adjacent limit members 11, which is convenient for positioning and placing the pressure reducing grid plate 31. A limit guide surface 12 is provided on the surface of each limit member 11, and the limit guide surface 12 is inclined toward the inner wall of the external cover body 1 along the placement direction of the pressure reducing grid plate 31, thereby ensuring that the pressure reducing grid plate 31 is placed smoothly during placement and will not damage the material structure of the pressure reducing grid plate 31.

[0040] The implementation principle of the embodiment of the present application is: when using the secondary structure, the pressure reducing grid plate 31 is placed under the panel layer 4, and the panel layer 4 is filled with stones and flush with the ground surface. When the force received by the inner bottom surface of the external cover body 1 is greatly reduced due to the relief of the pressure reducing grid plate 31 and the buffer layer 2, when the external pressure acts on the panel layer 4, the pressure reducing grid plate 31 and the buffer layer 2 can achieve offset through the elastic deformation properties of the material itself, thereby reducing the pressure received by the inner bottom wall of the external cover body 1, thereby achieving the effect of increasing the overall service life and protecting the inner bottom wall of the external cover body 1.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A buffering and shock-absorbing invisible manhole cover, comprising an external cover body (1), characterized in that: The external cover body (1) is internally divided into a buffer layer (2) and a pressure reduction layer (3); a plurality of elastic members (21) are arranged in an array inside the buffer layer (2); the pressure reduction layer (3) comprises a pressure reduction grid plate (31); a plurality of pressure reduction holes (32) are arranged in an array on the surface of the pressure reduction grid plate (31); the pressure reduction holes (32) are connected to an internal pressure reduction cavity (33); the bottom cross-sectional area of ​​the pressure reduction cavity (33) is smaller than the cross-sectional area of ​​the pressure reduction holes (32); a panel layer (4) is arranged above the pressure reduction layer (3); the panel layer (4) is flush with the upper surface of the external cover body (1); and the thickness of the panel layer (4) is much smaller than the thickness of the pressure reduction layer (3).

2. The buffer shock-absorbing invisible manhole cover according to claim 1 is characterized in that: A plurality of support frames (34) protrude from the upper surface of the pressure reducing grid plate (31), the top ends of the support frames (34) abut against the surface of the panel layer (4), and the support frames (34), the pressure reducing grid plate (31) and the support frames (34) are integrally formed.

3. The buffer shock-absorbing invisible manhole cover according to claim 2 is characterized in that: The pressure-reducing grid plate (31) has elastic deformation performance, and the surface area of ​​the upper surface of the support frame (34) is greater than the surface area of ​​the bottom surface of the support frame (34).

4. The buffer shock-absorbing invisible manhole cover according to claim 1 is characterized in that: A plurality of stoppers (11) are provided on the inner side wall of the external cover body (1), and the pressure-reducing grid plate (31) is embedded between two adjacent stoppers (11).

5. The buffer shock-absorbing invisible manhole cover according to claim 4 is characterized in that: A limiting guide surface (12) is provided on the surface of each limiting member (11), and the limiting guide surface (12) is inclined toward the inner side wall of the external cover body (1) along the placement direction of the pressure reduction grid plate (31).

6. The buffer shock-absorbing invisible manhole cover according to claim 1, characterized in that: The buffer layer (2) further comprises an elastic placement plate (22), the elastic placement plate (22) abuts against the bottom surface of the pressure reducing grid plate (31), and a plurality of elastic members (21) abut against the bottom surface of the elastic placement plate (22).

7. The buffer shock-absorbing invisible manhole cover according to claim 6 is characterized in that: The elastic deformation performance of the elastic member (21) is smaller than the elastic deformation performance of the elastic placement plate (22).

8. The buffer shock-absorbing invisible manhole cover according to claim 1, characterized in that: A plurality of pouring grooves (13) are provided on the surface of the external cover body (1).

Images