Inspection well cover of high-safety protection structure

Abstract

An inspection well lid of a high-safety protection structure comprises a first-layer well lid body, a second-layer well lid body, a third-layer well lid body and a fourth-layer well lid body, the second-layer well lid assembly is fixedly installed at the inspection well opening, located below the first-layer well lid body and connected with the first-layer well lid body; the third-layer well lid assembly is fixedly installed on the inspection well wall below the inspection well opening and connected with the first-layer well lid body through a connecting piece with the fixed length; when the inspection well mouth is not completely covered by the first layer of well lid body, the first layer of well lid body pulls the connecting piece to move, then the third layer of well lid assembly is pulled to expand into a net shape, and a safety protection net is formed below the inspection well mouth. When the first-layer well lid body completely covers the inspection well opening, the first-layer well lid body does not pull the connecting piece to move, and then the third-layer well lid assembly is in a contracted state and attached to the inspection well wall. The inspection well cover of the high-safety protection structure is of a three-layer structural design, and the safety of pedestrians passing by can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of municipal facilities and relates to a manhole cover with a high safety protection structure. Background Art

[0002] In cities, all public water supplies, sewage channels, telephone lines, and fiber optic networks may be connected through underground channels under manholes. The manhole is the exit to the ground and is covered by a manhole cover. Most underground pipelines are straight. When a turn is needed, a manhole is set at the turning position to prevent the straight pipeline from being blocked easily and to facilitate the installation of pipelines. In addition, for work and safety purposes, manholes are set at certain intervals along the pipeline to facilitate access to the pipeline.

[0003] The phenomenon of missing manhole covers on the road is not uncommon, posing great potential hazards to pedestrians, vehicles, and urban management. The main reasons include non-standard manhole cover design, unqualified manhole cover production quality, damaged manhole covers, and inadequate urban management. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a manhole cover with a high safety protection structure to improve the safety of traditional manhole covers.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a manhole cover with a high safety protection structure, which includes a first-layer manhole cover body for covering the manhole opening; a second-layer manhole cover assembly fixedly installed at the manhole opening and located below the first-layer manhole cover body, and connected to the first-layer manhole cover body; a third-layer manhole cover assembly fixedly installed on the manhole wall below the manhole opening and connected to the first-layer manhole cover body through a connecting piece; when the first-layer manhole cover body does not completely cover the manhole opening, it drives the connecting piece to move, and then drives the third-layer manhole cover assembly to expand into a net shape, forming a safety protection net below the manhole opening; when the first-layer manhole cover body completely covers the manhole opening, it does not drive the connecting piece to move, and then the third-layer manhole cover assembly is in a contracted state and adheres to the manhole wall.

[0006] The third-layer manhole cover assembly includes an elastic net and a plurality of fixing pieces; the elastic net is an annular net, and the outer ring edge of the annular net is fixed to the manhole wall through a plurality of fixing pieces; the inner ring edge of the annular net is connected to one end of the connecting piece and gradually reduces the area of the inner ring under the drive of the connecting piece, so that the annular net expands to form a safety protection net.

[0007] The inner ring edge includes an inner ring wall and an inner ring core embedded in the inner ring wall; an opening is provided on the inner ring wall; the inner ring core is connected to the connecting piece through the opening.

[0008] The inner ring edge is an inner ring rope; the inner ring rope is connected to the connecting piece.

[0009] The second - layer manhole cover assembly includes a support frame; a through - hole is provided on the support frame; the connecting piece passes through the through - hole and is respectively connected to the first - layer manhole cover body and the third - layer manhole cover assembly.

[0010] The connecting piece is provided with at least one buckle convex part; after passing through the through - hole, the buckle convex part is clamped above the through - hole.

[0011] The connecting piece is provided with at least one buckle convex part; after passing through the through - hole, the buckle convex part is clamped in a clamping groove arranged inside the through - hole.

[0012] The first - layer manhole cover body and the support frame of the second - layer manhole cover assembly are detachably connected by a locking component.

[0013] The first - layer manhole cover body and the support frame of the second - layer manhole cover assembly are connected by a rotating component, so that the first - layer manhole cover body can rotate 90 - 180 degrees around the rotating component in a plane perpendicular to the ground.

[0014] The first - layer manhole cover body and the support frame of the second - layer manhole cover assembly are connected by a rotating assembly, so that the first - layer manhole cover body can rotate 0 - 360 degrees around the rotating assembly in the plane of the ground.

[0015] The main beneficial effects of the present utility model are as follows:

[0016] The manhole cover has a three - layer structure design. As the first - layer manhole cover body is opened, the third - layer manhole cover assembly can be traction - moved and expanded into a net shape, forming a safety protection net under the manhole opening. To ensure that when the first - layer manhole cover body is opened or missing, there is a safety protection net inside the manhole opening, which can ensure the safety of passing pedestrians and avoid serious injury accidents caused by falling into the manhole. When the first - layer manhole cover body is abnormally damaged or missing, the second - layer manhole cover assembly ensures that the safety protection function of the third - layer manhole cover assembly can be normally exerted without being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further illustrates the present utility model in conjunction with the drawings and embodiments:

[0018] Figure 1 is a schematic structural diagram of the present utility model.

[0019] Figure 2 is a schematic diagram of the manhole cover of the present utility model completely covering the manhole opening.

[0020] Figure 3 is a schematic diagram of the manhole cover of the present utility model not completely covering the manhole opening.

[0021] Figure 4 is Figure 3 a front - view schematic diagram of.

[0022] Figure 5This is a schematic structural diagram of the second - layer manhole cover assembly of the present utility model.

[0023] Figure 6 This is a schematic structural diagram of the third - layer manhole cover assembly of the present utility model.

[0024] Figure 7 This is a schematic structural diagram of the connecting piece of the present utility model.

[0025] In the figure: the first - layer manhole cover body 100, the second - layer manhole cover assembly 200, the third - layer manhole cover assembly 300, the connecting piece 400, the support frame 210, the through - hole 211, the support rod 212, the elastic net 310, the outer ring edge 311, the inner ring edge 312, the buckle protrusion 410. Specific implementation mode

[0026] As Figures 1 to 7 shown, a manhole cover with a high - security protection structure

[0027] Example 1,

[0028] Figure 1 It shows a schematic implementation structure diagram of a manhole cover with a high - security protection structure provided by this example. As Figure 1 shown, the manhole cover with a high - security protection structure in the embodiment of the present application includes: the first - layer manhole cover body 100, the second - layer manhole cover assembly 200, and the third - layer manhole cover assembly 300.

[0029] The first - layer manhole cover body 100 is flush with the ground and is used to cover the manhole opening. Among them, the first - layer manhole cover body 100 is provided with auxiliary opening structures such as grooves, handles, or / and buckles that are convenient for maintenance personnel to open the first - layer manhole cover body.

[0030] The second - layer manhole cover assembly 200 is fixedly installed at the manhole opening, located below the first - layer manhole cover body, and is connected to the first - layer manhole cover body.

[0031] The third - layer manhole cover assembly 300 is fixedly installed on the manhole wall below the manhole opening and is connected to the first - layer manhole cover body 100 through a connecting piece 400 with a fixed length.

[0032] Example 2,

[0033] Figure 2 It shows Figure 1 a schematic side - view structure diagram of the manhole cover with a high - security protection structure in the state of completely covering the manhole opening. Referring to Figure 1 and Figure 2 shown, in an embodiment of the present application, when the first - layer manhole cover body 100 completely covers the manhole opening, the first - layer manhole cover body 100 does not drive the connecting piece to move, so that the third - layer manhole cover assembly 300 is in a contracted state and adheres to the manhole wall.

[0034] Example 3

[0035] Figure 3 It shows a schematic diagram of an implementation structure of the manhole cover with a high - security protection structure provided in this embodiment in a state where it does not completely cover the manhole opening. Figure 4 Shown as Figure 1 A schematic side - view structure diagram of the manhole cover with the high - security protection structure shown in the state where it does not completely cover the manhole opening. Refer to Figure 3 and Figure 4 As shown, in an embodiment of the present application, when the first - layer manhole - cover body 100 does not completely cover the manhole opening, the first - layer manhole - cover body 100 drives the connecting member 400 to move, and then drives the third - layer manhole - cover assembly 300 to expand into a net shape, forming a safety protection net under the manhole opening.

[0036] The manhole cover has a three - layer structure design. The third - layer manhole - cover assembly can be driven to move and expand into a net shape as the first - layer manhole - cover body is opened, forming a safety protection net under the manhole opening. To ensure that when the first - layer manhole - cover body is opened or missing, there is a safety protection net in the manhole opening, which can ensure the safety of passing pedestrians and avoid serious injury accidents caused by falling into the manhole.

[0037] Example 4

[0038] Figure 5 It shows a schematic diagram of an implementation structure of the second - layer manhole - cover assembly of the manhole cover with a high - security protection structure provided in this embodiment. As Figure 5 shown, in an implementation manner of the present application, the second - layer manhole - cover assembly 200 includes a support frame 210; through - holes 211 are provided on the support frame 210; the connecting member 400 passes through the through - holes 211 and is respectively connected to the first - layer manhole - cover body 100 and the third - layer manhole - cover assembly 300. The through - holes can be arranged at the center position of the support frame or at the edge position of the support frame. The through - holes can be the self - through - holes of the support frame or through - holes formed by a snap - ring structure clamped on the support frame; the snap - ring structure can be opened or closed.

[0039] The second - layer manhole - cover assembly of the manhole cover is fixedly installed at the manhole opening and will not move or separate from the manhole opening as the first - layer manhole - cover body is opened. It can not only assist in installing and fixing the first - layer manhole - cover body and assist in opening the first - layer manhole - cover body for subsequent maintenance, but also play a role in the first - layer safety protection. Because the support frame in the second - layer manhole - cover assembly has a support - rod structure design, it can effectively block people or objects on the ground from falling into the manhole.

[0040] Example 5

[0041] As Figure 5As shown, in an embodiment of the present application, a wrapping layer is provided outside the support rods 212 in the support frame 210 of the second-layer manhole cover assembly 200. On the one hand, it is convenient for maintenance personnel to operate without hurting their hands, and on the other hand, it can also be used for safety protection.

[0042] The material of the second-layer manhole cover assembly can preferably be made of relatively strong and durable materials such as stainless steel. Since the support rods of the support frame need to play an interception and protection role, their outsides can be wrapped with relatively soft materials, that is, a wrapping layer is provided.

[0043] Embodiment 6

[0044] In an embodiment of the present application, the through holes 211 in the support frame 210 of the second-layer manhole cover assembly 200 are not limited to being provided at the intersection points of the support rods 212, nor are they limited to being provided on the support rods 212. They can also be provided on the edge of the support frame 210, or at the blank positions between the support rods 212 within the range surrounded by the support frame 210. The protection scope of the present application is not limited to the positions of the through holes listed in this embodiment, nor is it limited to the structures of the through holes listed in the present application. Any structural design that realizes the same functions and effects as the through holes is included in the protection scope of the present application, and no further examples are listed here.

[0045] Embodiment 7

[0046] A schematic structural diagram of an implementation of the third-layer manhole cover assembly of the manhole cover. As Figure 6 As shown, in an implementation manner of the present application, the third-layer manhole cover assembly 300 includes an elastic net 310 and a plurality of fixing members; the elastic net 310 is an annular net, and the outer ring edge 311 of the annular net 310 is fixed to the manhole wall through a plurality of fixing members; the inner ring edge 312 of the annular net 310 is connected to one end of the connecting member 400, and under the traction of the connecting member 400, the area of the inner ring is gradually reduced, causing the annular net to expand to form a safety protection net.

[0047] The inner ring edge 312 includes an inner ring wall and an inner ring core embedded in the inner ring wall; an opening is provided on the inner ring wall; the inner ring core is connected to the connecting member through the opening. When the inner ring core is pulled upward by the connecting member, the inner ring wall is squeezed and contracted by the inner ring core, and the inner ring area is gradually reduced, causing the elastic net 310 to gradually expand.

[0048] The inner ring edge 312 is an inner ring rope; the inner ring rope is connected to the connecting member. When the inner ring rope is pulled upward by the connecting member, the inner ring rope contracts to reduce the inner ring area, causing the elastic net 310 to gradually expand.

[0049] Embodiment 8

[0050] Figure 7 It shows a schematic structural diagram of an implementation of the connecting member of the manhole cover with a high safety protection structure provided in this embodiment. As Figure 7As shown, in an implementation manner of the present application, the connecting member 400 is provided with at least one snap protrusion 410; the snap protrusion 410 is snap-connected above the through hole 211 after passing through the through hole. The connecting member can pass through the through hole from bottom to top and be snap-connected without retreating downward, so that once the elastic net is pulled upward by the connecting member and expanded into a net shape, it will not automatically rebound and contract, and must be processed by maintenance personnel before it can return to the contracted state to further ensure safety.

[0051] The connecting member is provided with at least one snap protrusion; the snap protrusion is snap-connected to a card slot provided inside the through hole after passing through the through hole. The snap and the card slot are matched, so that the connecting member can pass through the through hole from bottom to top and be snap-connected without retreating downward.

[0052] If the connecting member is disconnected from the first-layer manhole cover body due to excessive external force, the connecting member can still be firmly snap-connected to the through hole of the second-layer manhole cover assembly, ensuring that the elastic net of the third-layer manhole cover assembly can be normally expanded into a net shape and will not contract due to the disconnection of the connecting member from the first-layer manhole cover body, losing its protective function.

[0053] Embodiment 9

[0054] In the case where the first-layer manhole cover body is abnormally damaged or missing, the second-layer manhole cover assembly ensures that the safety protection function of the third-layer manhole cover assembly can be normally exerted without being affected.

[0055] The support frame of the first-layer manhole cover body 100 and the second-layer manhole cover assembly 200 is detachably connected by a locking assembly. The structure and type of the locking assembly can be freely designed according to the opening method of the first-layer manhole cover body 100. For example: the first-layer manhole cover body can be lifted in the vertical direction, translated in the horizontal direction, or rotated in the horizontal direction.

[0056] The support frame of the first-layer manhole cover body 100 and the second-layer manhole cover assembly 200 is rotatably connected by a rotating assembly, so that the first-layer manhole cover body can rotate 90 - 180 degrees around the rotating assembly in a plane perpendicular to the ground.

[0057] Embodiment 10

[0058] The rotational connection methods of the rotating assembly include pin connection, socket connection, roller connection, cycloid connection, gear connection, and universal joint connection, etc.

[0059] Pin connection is a connection method using a pin connection hole and a pin. Pin connection is suitable for occasions with small surface loads, high precision requirements, and low speeds. Common forms of pin connection include interference connection, load-bearing pin connection, and elastic pin connection.

[0060] The socket connection is to manufacture a relatively thick handle on the shaft. The diameters of both ends of the handle are equal to the diameter of the shaft, and the connection is made by the way of the cooperation between the handle and the hole. It is applicable to occasions with relatively harsh working environments that need to withstand high torque and impact.

[0061] The roller connection is a connection method using a detachable bearing with rollers or sliding elements. It is mainly used in occasions requiring high speed, large load and high positioning requirements. The roller connection mainly includes two types: ball bearings and roller bearings.

[0062] The cycloidal connection is a way to connect the shaft through an annular flange and a toothed flange. This connection method can achieve a relatively large rotation angle. It is applied to occasions requiring high torque, low noise and high positioning accuracy.

[0063] The gear connection first uses gears to transmit power, and then makes two shafts connected together by the meshing of the gears. It is applicable to occasions that need to withstand high torque and transmit power.

[0064] The universal joint connection connects two shafts through the bending deformation of an elastic sleeve, and can realize the concentric transmission of the two shafts when the relative eccentric angle is relatively large. It is applied to occasions with bending angles.

[0065] Example 11

[0066] The support frame of the first-layer manhole cover body 100 and the second-layer manhole cover assembly 200 is rotationally connected through a rotating assembly, so that the first-layer manhole cover body can rotate 0 to 360 degrees around the rotating assembly on the plane of the ground.

[0067] The rotating assembly can be a 360-degree universal rotary joint, including two connection methods: threaded connection and flange connection.

[0068] The second-layer manhole cover assembly is fixedly installed at the manhole opening and will not move or separate from the manhole opening as the first-layer manhole cover body is opened. It can not only assist in the installation and fixation of the first-layer manhole cover body, assist in opening the first-layer manhole cover body for subsequent maintenance, but also play a role in the first-layer safety protection. Because the support frame in the second-layer manhole cover assembly has a support rod structure design, it can effectively prevent people or objects on the ground from falling into the manhole. The second-layer manhole cover assembly constitutes a part of the high-safety protection structure.

[0069] As the first-layer manhole cover body is opened, the third-layer manhole cover assembly can be traction-moved and expanded into a net shape to form a safety protection net under the manhole opening, so as to ensure that there is a safety protection net in the manhole when the first-layer manhole cover body is opened or missing, which can ensure the safety of passing pedestrians and avoid serious injury accidents caused by falling into the manhole. The third-layer manhole cover assembly constitutes a part of the high-safety protection structure.

[0070] Even if the connecting member is disconnected from the first-layer manhole cover body due to excessive external force, the connecting member can still be firmly clamped in the through hole of the second-layer manhole cover assembly, ensuring that the elastic net of the third-layer manhole cover assembly can be normally expanded into a net shape and will not shrink due to the disconnection of the connecting member from the first-layer manhole cover body, losing its protective function.

[0071] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The embodiments in this application and the features in the embodiments can be arbitrarily combined with each other without conflict. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A manhole cover with a high safety protection structure, characterized by: It includes a first-layer manhole cover body for covering the manhole opening; a second-layer manhole cover assembly is fixedly installed on the manhole opening and is located below the first-layer manhole cover body, and is connected to the first-layer manhole cover body; a third-layer manhole cover assembly is fixedly installed on the manhole wall below the manhole opening, and is connected to the first-layer manhole cover body through a connecting piece; when the first-layer manhole cover body does not completely cover the manhole opening, the connecting piece is driven to move, thereby driving the third-layer manhole cover assembly to expand into a net shape, forming a safety protection net below the manhole opening; when the first-layer manhole cover body completely covers the manhole opening, the connecting piece is not driven to move, thereby causing the third-layer manhole cover assembly to be in a contracted state and attached to the manhole wall.

2. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The third-layer manhole cover assembly includes an elastic net and a plurality of fixing parts; the elastic net is an annular net, and the outer ring edge of the annular net is fixed to the manhole wall by a plurality of fixing parts; the inner ring edge of the annular net is connected to one end of the connecting part, and the area of ​​the inner ring is gradually reduced under the pull of the connecting part, so that the annular net expands to form a safety protection net.

3. The manhole cover with a high safety protection structure according to claim 2 is characterized in that: The inner ring edge comprises an inner ring wall and an inner ring core embedded in the inner ring wall; an opening is arranged on the inner ring wall; and the inner ring core is connected to the connecting piece through the opening.

4. The manhole cover with a high safety protection structure according to claim 2 is characterized in that: The inner ring edge is an inner ring rope; the inner ring rope is connected to the connecting piece.

5. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The second-layer manhole cover assembly includes a supporting frame; a through hole is provided on the supporting frame; and a connecting piece passes through the through hole and is respectively connected to the first-layer manhole cover body and the third-layer manhole cover assembly.

6. The manhole cover with a high safety protection structure according to claim 5 is characterized in that: The connecting piece is provided with at least one buckle convex part; the buckle convex part passes through the through hole and is buckled above the through hole.

7. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The connecting piece is provided with at least one buckle convex part; the buckle convex part passes through the through hole and is buckled in the clamping groove arranged on the inner side of the through hole.

8. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The first layer of the manhole cover body and the supporting frame of the second layer of the manhole cover assembly are detachably connected via a locking assembly.

9. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The first layer of the manhole cover body and the supporting frame of the second layer of the manhole cover assembly are connected through a rotating assembly, so that the first layer of the manhole cover body can be rotated 90 to 180 degrees around the rotating assembly on a plane vertical to the ground.

10. The manhole cover with a high safety protection structure according to claim 1 is characterized in that: The first layer of the manhole cover body and the supporting frame of the second layer of the manhole cover assembly are connected through a rotating assembly, so that the first layer of the manhole cover body can rotate 0 to 360 degrees around the rotating assembly on the plane of the ground.

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