Safe anti-falling cellar cover

Abstract

This utility model discloses a safe, anti-fall manhole cover, relating to the field of manhole cover technology. It includes a mounting top plate, to which a ring of manhole connecting pipes is fixedly connected. Multiple interconnected telescopic connecting posts are respectively arranged on the inner walls of both sides of the manhole connecting pipes. A fall-prevention barrier is connected between two telescopic connecting posts, and a fall-prevention net body is connected between all the fall-prevention barriers. This utility model achieves a safe fall-prevention effect for the manhole cover through the fall-prevention net body. Simultaneously, the telescopic connecting posts, which can slide along the inner wall of the manhole connecting pipe, allow the dimensions of the fall-prevention net body and the manhole cover to be adjusted according to drainage needs. When the water flow is large, the fall-prevention net is rolled up, allowing water to flow smoothly through the manhole cover. When the external water flow is small, the fall-prevention net is stretched out, aligning with the manhole cover for better fall prevention.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, specifically a safety anti-fall manhole cover. Background Technology

[0002] Manhole covers are used to cover deep wells in roads or homes to prevent people or objects from falling in and to facilitate maintenance. They can be classified by material, such as metal manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers. In existing technology, to prevent pedestrians from falling into the well during maintenance, anti-theft manhole covers typically have a fall arrestor installed in the base. Traditionally, the fall arrestor is bolted to the base, making installation and removal labor-intensive. One existing municipal safety anti-theft manhole cover (publication number: CN221741369U) exhibits at least the following defects in use:

[0003] In the above solution, the top of the support plate is inserted into the surface of the fall arrestor plate, the fall arrestor plate overlaps the bottom plate of the support plate, and the pressure plate connected to the top surface of the support plate is moved to block the fall arrestor plate, thereby fixing the fall arrestor plate to the support plate, which facilitates the quick loading and unloading of the fall arrestor plate. However, in actual use, the manhole cover often also plays the role of drainage, and the fall arrestor plate will affect the drainage function of the manhole cover. When the water flow is large, it is difficult to drain the water in time, causing some urban flooding. Therefore, a safe fall arrestor manhole cover needs to be developed. Utility Model Content

[0004] The main purpose of this utility model is to provide a safe and anti-fall manhole cover, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A safety anti-fall manhole cover includes a mounting top plate, a manhole cover plate rotatably connected to the top of one side of the mounting top plate, and a ring of manhole connecting pipes fixedly connected to the bottom side of the mounting top plate. A sliding groove is formed on the inner wall of each side of the manhole connecting pipe. Multiple interconnected telescopic connecting columns are provided between the inner walls of each sliding groove, and each telescopic connecting column in two sliding grooves corresponds one-to-one. A fall-prevention barrier is fixedly connected between the opposite sides of two corresponding telescopic connecting columns. A fall-prevention net body is fixedly connected between all the fall-prevention barriers.

[0007] Preferably, multiple evenly distributed telescopic springs are fixedly connected between the opposite sides of two adjacent telescopic connecting columns, and an elastic skin is fixedly connected between the opposite sides of two adjacent telescopic connecting columns, with each elastic skin covering the outside of all corresponding telescopic springs.

[0008] Preferably, a connecting base block is fixedly connected to one side of the inner wall of each of the two sliding grooves. One side of each connecting base block is fixedly connected to a corresponding telescopic connecting post through multiple telescopic springs and a ring of elastic skin. A connecting sliding rod is fixedly connected to the top side of each end of the fall arresting bar away from the connecting base block. Two fall arresting sliding openings are opened on the top side of the mounting top plate. Each connecting sliding rod is slidably connected to the inner wall of one fall arresting sliding opening.

[0009] Preferably, a positioning push plate is fixedly connected to the side of the fall arrestor bar away from the connecting base block. One side of the positioning push plate extends beyond the wellhead connecting pipe, and a positioning sleeve is fixedly connected to the outside of the wellhead connecting pipe. The outside of the positioning push plate and the inside of the positioning sleeve are slidably connected.

[0010] Preferably, a threaded hole is provided on the top side of the positioning sleeve, and a positioning bolt is screwed between the inner walls of the threaded hole, with the bottom end of the positioning bolt in close contact with the top side of the positioning push plate.

[0011] Preferably, the top ends of the two connecting slide rods are fixedly connected to a control handle, and two symmetrically distributed shielding rolls are installed on the top side of the mounting plate, each shielding roll being adapted to an anti-fall sliding opening.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The anti-fall net effectively prevents the manhole cover from falling. Meanwhile, the telescopic connecting column, which slides along the inner wall of the manhole connection pipe, allows the dimensions of the anti-fall net and the manhole cover to be adjusted according to drainage needs. When the water flow is high, the anti-fall net is rolled up, allowing water to flow smoothly through the manhole cover. When the external water flow is low, the anti-fall net is stretched out, aligning itself with the manhole cover for better anti-fall protection. Attached Figure Description

[0014] Figure 1 This is an isometric view of the present invention;

[0015] Figure 2 This is a schematic diagram of the manhole cover installation device of this utility model;

[0016] Figure 3 This is a schematic diagram of the fall arrestor structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the elastic support side rod structure of this utility model.

[0018] In the diagram: 101, manhole cover plate; 102, shielding roll plate; 103, anti-fall sliding port; 104, manhole connection pipe; 105, positioning push plate; 106, sealing connection ring; 107, mounting top plate; 108, positioning sleeve; 109, positioning bolt; 201, control handle; 202, connecting slide rod; 203, anti-fall net body; 204, anti-fall barrier bar; 301, connecting base block; 302, elastic skin; 303, telescopic connecting column; 304, support roller; 305, rotating support frame; 306, telescopic spring. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Please see Figures 1-4 This utility model provides a technical solution:

[0023] A safety anti-fall manhole cover includes a mounting top plate 107. A manhole cover plate 101 is rotatably connected to the top of one side of the mounting top plate 107. A sealing connecting ring 106 is fixedly connected to the bottom side of the manhole cover plate 101 for connection with the inner wall of the mounting top plate 107. A manhole connecting pipe 104 is fixedly connected to the bottom side of the mounting top plate 107. A groove is formed on each side of the inner wall of the manhole connecting pipe 104. Multiple interconnected telescopic connecting posts 303 are provided between the inner walls of each groove, and each telescopic connecting post 303 in the two grooves corresponds one-to-one. In this embodiment, a rotating support frame 305 is fixedly connected to the upper and lower sides of each telescopic connecting post 303. A support roller 304 is rotatably connected between the inner walls of each side of each rotating support frame 305. Each support roller 304 rolls in contact with the corresponding inner wall of the groove.

[0024] A fall arresting bar 204 is fixedly connected between the opposite sides of two corresponding telescopic connecting posts 303, and a fall arresting net body 203 is fixedly connected between all the fall arresting bars 204. Multiple evenly distributed telescopic springs 306 are fixedly connected between the opposite sides of two adjacent telescopic connecting posts 303, and a ring of elastic skin 302 is fixedly connected between the opposite sides of two adjacent telescopic connecting posts 303. Each ring of elastic skin 302 covers the outside of all corresponding telescopic springs 306. Therefore, in this embodiment, the spacing between the telescopic connecting posts 303 will change, thereby causing the fall arresting net body 203 to stretch and fold, changing the coverage area of ​​the fall arresting net body 203 on the manhole cover 101.

[0025] A connecting base block 301 is fixedly connected to one side of the inner wall of each of the two sliding grooves. Each connecting base block 301 is fixedly connected to a corresponding telescopic connecting post 303 via multiple telescopic springs 306, a ring of elastic skin 302, and a connecting rod 202 at each end of the fall arrestor bar 204 away from the connecting base block 301. Two fall arrestor openings 103 are provided on the top side of the mounting plate 107. Each connecting rod 202 is slidably connected to the inner wall of one fall arrestor opening 103. A control handle 201 is fixedly connected to the top of both connecting rods 202. Two symmetrically distributed shielding flaps 102 are installed on the top side of the mounting plate 107, each shielding flap 102 being adapted to one fall arrestor opening 103. The shielding flaps 102 shield the fall arrestor openings 103, providing a certain degree of protection for the device.

[0026] A positioning push plate 105 is fixedly connected to one side of the fall arresting arm 204 away from the connecting base block 301. One side of the positioning push plate 105 extends beyond the wellhead connecting pipe 104, and a positioning sleeve 108 is fixedly connected to the outside of the wellhead connecting pipe 104. The outer side of the positioning push plate 105 and the inner side of the positioning sleeve 108 are slidably connected. A threaded hole is opened on the top side of the positioning sleeve 108, and a positioning bolt 109 is screwed between the inner walls of the threaded hole. The bottom end of the positioning bolt 109 is in close contact with the top side of the positioning push plate 105. The position of the fall arresting net body 203 is fixed by the compression of the positioning push plate 105 by the positioning bolt 109.

[0027] It should be noted that this utility model, as a safety anti-fall manhole cover, achieves a safety anti-fall effect through the setting of the anti-fall net body 203. At the same time, through the setting of the telescopic connecting column 303 that can slide along the inner wall of the manhole connecting pipe 104, the size of the anti-fall net body 203 and the manhole cover facing each other can be adjusted according to drainage needs. When the water flow is large, the anti-fall net is rolled up so that the water can flow smoothly through the manhole cover. When the external water flow is small, the anti-fall net is stretched out so that it faces the manhole cover, achieving a better anti-fall effect.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended embodiments and their equivalents.

Claims

1. A safety fall-preventing manhole cover comprising a mounting top plate (107), characterized in that: A manhole cover plate (101) is rotatably connected to the top of one side of the mounting plate (107). A ring of manhole connecting pipes (104) is fixedly connected to the bottom side of the mounting plate (107). A sliding groove is opened on the inner wall of each side of the manhole connecting pipe (104). Multiple telescopic connecting columns (303) are connected to each other between the inner walls of each sliding groove. Each telescopic connecting column (303) in the two sliding grooves corresponds to one another. A fall arresting bar (204) is fixedly connected between the opposite sides of the two corresponding telescopic connecting columns (303). A fall arresting net body (203) is fixedly connected between all the fall arresting bars (204).

2. A safety fall-preventing pit cover according to claim 1, characterized in that: Multiple evenly distributed telescopic springs (306) are fixedly connected between the opposite sides of two adjacent telescopic connecting columns (303), and an elastic skin (302) is fixedly connected between the opposite sides of two adjacent telescopic connecting columns (303). Each elastic skin (302) covers the outside of all the corresponding telescopic springs (306).

3. A safety fall-preventing pit cover according to claim 2, characterized in that: A connecting base block (301) is fixedly connected to one side of the inner wall of each of the two sliding grooves. Each connecting base block (301) is fixedly connected to a corresponding telescopic connecting column (303) by multiple telescopic springs (306) and a ring of elastic skin (302) on one side. A connecting slide rod (202) is fixedly connected to the top side of each end of the fall arresting bar (204) away from the connecting base block (301). Two fall arresting sliding openings (103) are opened on the top side of the mounting plate (107). Each connecting slide rod (202) is slidably connected to the inner wall of a fall arresting sliding opening (103).

4. A safety fall-preventing pit cover according to claim 3, characterized in that: A positioning push plate (105) is fixedly connected to the side of the fall arrestor (204) away from the connecting base block (301). One side of the positioning push plate (105) extends beyond the wellhead connecting pipe (104), and a positioning sleeve (108) is fixedly connected to the outside of the wellhead connecting pipe (104). The outside of the positioning push plate (105) and the inside of the positioning sleeve (108) are slidably connected.

5. A safety fall-preventing pit cover according to claim 4, characterized in that: The top side of the positioning sleeve (108) is provided with a threaded hole, and a positioning bolt (109) is screwed between the inner walls of the threaded hole. The bottom end of the positioning bolt (109) is in close contact with the top side of the positioning push plate (105).

6. A safety anti-fall manhole cover according to claim 4, characterized in that: The top ends of the two connecting slide rods (202) are fixedly connected to a control handle (201). Two symmetrically distributed shielding rolls (102) are installed on the top side of the mounting plate (107). Each shielding roll (102) is adapted to a fall prevention slide (103).

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