Anti-falling grating for inspection well

Abstract

The utility model discloses an inspection well anti-falling grating which comprises a base and is characterized in that a boss is arranged on the base and is of a hollow structure, sliding grooves are formed in the boss in a circumferential array mode, sliding rods are installed in the sliding grooves in a sliding mode, and one end of each sliding rod extends out of the boss from the side wall of the boss; a mounting seat is rotationally mounted on the base, a grid is arranged on the mounting seat in a surrounding manner, and a locking screw is arranged on the mounting seat; a driving disc is connected to the mounting seat, an arc-shaped notch is formed in the driving disc, and a guide pin matched with the arc-shaped notch is arranged on the sliding rod; according to the utility model, rapid installation can be realized, and the use convenience is improved.

Description

Technical Field

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

[0002] With the acceleration of urbanization, the number of manholes in underground pipe networks is increasing daily. However, cases of manholes being exposed due to stolen, damaged, or temporarily removed manhole covers for construction are frequent, leading to numerous accidents involving pedestrians or vehicles falling into them, as reported in the media. Traditional solutions often employ fixed anti-fall grates or temporary covers, but these still have many shortcomings:

[0003] Fixed grating installation requires specialized tools and has poor size adaptability, making it difficult to handle manholes of different diameters;

[0004] Temporary coverings (such as steel plates and wooden boards) lack a fixed structure and are easily displaced by external forces, posing secondary hazards.

[0005] Existing adjustable devices are complex in structure and cumbersome in adjustment, making them unable to quickly respond to sudden manhole cover loss scenarios. Therefore, there is an urgent need for a manhole fall prevention device that can be installed quickly, is highly adaptable, and is stable and reliable to fill the gaps in existing technologies. Utility Model Content

[0006] In view of the deficiencies in the existing technology, this utility model provides a manhole anti-fall grid.

[0007] This utility model is achieved through the following technical solution:

[0008] A manhole anti-fall grid includes a base, characterized in that: a boss is provided on the base, the boss has a hollow structure, and a sliding groove is arranged in a circular array inside the boss, a sliding rod is slidably installed in the sliding groove, one end of the sliding rod extends out of the side wall of the boss; a mounting seat is rotatably installed on the base, the grid is arranged around the mounting seat, and a locking screw is provided on the mounting seat; a drive disc is connected to the mounting seat, the drive disc is provided with an arc-shaped groove, and a guide pin that cooperates with the arc-shaped groove is provided on the sliding rod.

[0009] Preferably, a mounting base is connected to the base via a slewing bearing.

[0010] Preferably, the mounting base is provided with locking screws arranged in a circumferential array, and the base is provided with an annular anti-slip layer that matches the position of the locking screws.

[0011] Preferably, the sidewall of the slide is provided with a straight groove that mates with the guide pin.

[0012] Preferably, one end of the slide bar is connected to a buffer block, which has an arc-shaped structure.

[0013] The beneficial effects of this utility model are as follows: This utility model can be installed at the manhole in the event of removal or loss of the manhole cover to prevent pedestrians from accidentally falling in; when installing this utility model, the protrusion is placed into the manhole, the grid is moved to drive the buffer block to the side wall of the manhole, and then the locking screws are tightened to complete the installation, making the installation and removal of the manhole anti-fall grid very convenient. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is an isometric view of the present invention.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is the front view of the present invention.

[0018] Figure 4 This is a top view of the present invention.

[0019] Figure 5 for Figure 4 Sectional view along direction A.

[0020] In the attached diagram, 1 is the base; 2 is the boss; 3 is the slewing bearing; 4 is the mounting base; 5 is the grille; 6 is the locking screw; 7 is the anti-slip layer; 8 is the slide groove; 9 is the straight groove opening; 10 is the slide rod; 11 is the guide pin; 12 is the drive disc; and 13 is the buffer block. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0023] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will now be described in detail with reference to the accompanying drawings:

[0026] Structural Description:

[0027] This embodiment provides a manhole anti-fall grating 5, which includes the following core components:

[0028] Base 1 and boss 2: Base 1 is made of high-strength cast iron or AGR composite material, and the surface is provided with an annular anti-slip layer 7. Base 1 should be larger than the diameter of the manhole opening. Boss 2 is a hollow cylindrical structure, and boss 2 should be smaller than the diameter of the manhole opening. Slide grooves 8 are distributed in a circular array inside boss 2. Slide rods 10 are installed in slide grooves 8. One end of slide rod 10 extends out of boss 2 and is connected to arc-shaped buffer block 13.

[0029] Drive mechanism: Mounting base 4 is connected to base 1 via slewing bearing 3. Drive disc 12 is fixed to the bottom of mounting base 4. Drive disc 12 is provided with arc-shaped groove. Slide rod 10 is provided with guide pin 11 that cooperates with arc-shaped groove. When the grille 5 is rotated, the slide rod 10 can be driven to expand or contract.

[0030] Locking device: Multiple sets of locking screws 6 are arranged in a circular array on the mounting base 4. After tightening, they can press the anti-slip layer 7 on the base 1 to prevent the mounting base 4 from rotating. The anti-slip layer 7 is preferably provided with anti-slip texture on the base 1.

[0031] Installation steps:

[0032] Placement of base 1: Place the boss 2 into the manhole opening, and base 1 will be secured at the manhole opening.

[0033] Adjusting slide bar 10: Rotate the mounting base 4 clockwise to drive the arc-shaped groove of the drive disc 12 to push the guide pin 11, so that the slide bar 10 slides outward along the slide groove 8 until the buffer block 13 fits tightly against the well wall.

[0034] Fixing device: Tighten the locking screw 6 to achieve double fixing through the friction between the anti-slip layer 7 and the screw, preventing the mounting base 4 from rotating and thus making the device unstable.

[0035] Disassembly: Loosen the locking screw 6, rotate the mounting base 4 counterclockwise, and then lift the device out.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A manhole anti-fall grid (5), comprising a base (1), characterized in that: The base (1) is provided with a boss (2), which is a hollow structure. A sliding groove (8) is arranged in a circular array inside the boss (2). A sliding rod (10) is slidably installed in the sliding groove (8). One end of the sliding rod (10) extends out of the boss (2) from the side wall of the boss (2). A mounting seat (4) is rotatably installed on the base (1). A grid (5) is arranged around the mounting seat (4). A locking screw (6) is provided on the mounting seat (4). A drive disc (12) is connected to the mounting seat (4). An arc-shaped groove is provided on the drive disc (12). A guide pin (11) that cooperates with the arc-shaped groove is provided on the sliding rod (10).

2. The manhole anti-fall grid (5) as described in claim 1, characterized in that: The base (1) is connected to the mounting base (4) via a rotary bearing (3).

3. The manhole anti-fall grid (5) as described in claim 1, characterized in that: The mounting base (4) is provided with locking screws (6) arranged in a circumferential array, and the base (1) is provided with an annular anti-slip layer (7) that matches the position of the locking screws (6).

4. The manhole anti-fall grid (5) as described in claim 1, characterized in that: The sidewall of the slide (8) is provided with a straight groove (9) that cooperates with the guide pin (11).

5. The manhole anti-fall grid (5) as described in claim 1, characterized in that: One end of the slide bar (10) is connected to a buffer block (13), which has an arc-shaped structure.

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