Spiral anti-falling well lid inner plate

Abstract

The utility model provides a spiral anti-falling well lid inner plate, which comprises a middle support block, a spiral elastic plate, threaded rods, a protective net and a reinforcing block, the spiral elastic plate is horizontally arranged outside the middle support block, spare through holes are formed in the left front sides of the middle support block and the spiral elastic plate in a penetrating manner, and the threaded rods are inserted into several spare through holes. The front end of the threaded rod is screwed with a second nut with a flange through threads, the rear end of the threaded rod is screwed with a first nut with a flange through threads, the lower end of the middle supporting block is fixedly provided with a connecting block through waterproof glue, and the outer side of the connecting block is fixedly provided with a protective net. The device can be finely adjusted according to the diameter size of the well wall of the drainage well, no large gap is reserved when the device is installed in the well, and meanwhile by means of the double protection structures of the spiral elastic plate, the adjusting screw rod and the protection net, passers-by can be prevented from missing and falling into the well when passing through the device.

Description

Technical Field

[0001] The utility model relates to a spiral anti-falling manhole cover inner plate, belonging to the technical field of manhole cover equipment. Background Art

[0002] In municipal drainage projects, manhole covers are generally easily stolen by thieves, or they need to be opened for rapid drainage in rainy weather. During the drainage process, some sewage is mixed and not easily visible to pedestrians. Passersby may accidentally fall in when passing by, posing a safety hazard. Therefore, it is necessary to fix the manhole cover protection net on the wall of the water supply and drainage well.

[0003] However, since the diameter of the drainage well wall cannot be exactly the same, the drainage well cover protection net is not firmly fixed to the drainage well wall, which can easily cause the drainage well cover protection net to fall from the drainage well wall, or there is a large gap between the drainage well cover protection net and the drainage well wall, causing passers-by to step on air through the gap in the protection net, thereby making the drainage well cover protection net ineffective in its protective function. Now, there is an urgent need for a spiral anti-fall well cover inner plate to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a spiral anti-fall manhole cover inner plate to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a spiral anti-fall manhole cover inner plate, including a middle support block, a spiral spring plate, a threaded rod, a protective net and a reinforcement block, the spiral spring plate is horizontally installed on the outside of the middle support block, and the middle support block and the left front side of the spiral spring plate are penetrated with spare through holes, the threaded rod is inserted into several of the spare through holes, the front end of the threaded rod is screwed with a second flanged nut through a thread, and the rear end of the threaded rod is screwed with a first flanged nut through a thread, the lower end of the middle support block is fixed with a connecting block through waterproof glue, and a protective net is fixed on the outside of the connecting block, and a plurality of the reinforcement blocks are provided, and the plurality of the reinforcement blocks are symmetrically welded around the edge of the upper end of the spiral spring plate, and a plurality of extension bolts are inserted in the plurality of the reinforcement blocks through the thread principle.

[0006] Furthermore, the rear end of the second flanged nut abuts against the left front side of the spiral spring plate.

[0007] Furthermore, the first flanged nut abuts against one side of the inner portion of the spiral spring plate.

[0008] Furthermore, the edge of the protective net is connected to the lower end of the outer side of the spiral spring plate through a plurality of welding plates.

[0009] Furthermore, a plurality of the lengthened bolts are inserted into the inner wall of the drainage well.

[0010] Furthermore, the spiral spring plate is horizontally installed in the drainage well.

[0011] The beneficial effects of the utility model: the utility model is a spiral anti-fall manhole cover inner plate, because the utility model adds a middle support block, a spiral spring plate, a threaded rod, a first flange nut, a second flange nut, a reinforcement block, an extension bolt, a connecting block, a protective net and a welding plate. Our design improvement and actual use have shown that the device has a reasonable structure and good practicality. The spiral spring plate structure allows the device to be fine-tuned according to the diameter of the drainage well wall, so that when it is installed in the well, no large gap will be left. At the same time, the double protection structure of the spiral spring plate and the strength of the adjusting screw rod itself and the protective net can also prevent passers-by from stepping on air and falling into the well when passing by. The device is simple to install and is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of a spiral anti-fall manhole cover inner plate of the utility model;

[0014] Figure 2 It is a three-dimensional schematic diagram of a protective net of a spiral anti-fall manhole cover inner plate of the utility model;

[0015] Figure 3 It is a three-dimensional schematic diagram of a threaded rod of a spiral anti-fall manhole cover inner plate of the utility model;

[0016] In the figure: 1-middle support block, 2-spiral spring plate, 3-spare through hole, 4-threaded rod, 5-first flanged nut, 6-second flanged nut, 7-reinforcement block, 8-lengthened bolt, 9-connecting block, 10-protective net, 11-welding plate. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0018] See also Figure 1-Figure 3The utility model provides a technical solution: a spiral anti-fall manhole cover inner plate, including a middle support block 1, a spiral spring plate 2, a threaded rod 4, a protective net 10 and a reinforcement block 7. The spiral spring plate 2 is horizontally installed on the outside of the middle support block 1. The middle support block 1 and the left front side of the spiral spring plate 2 are penetrated with spare through holes 3, and the threaded rod 4 is inserted into several of the spare through holes 3. The front end of the threaded rod 4 is screwed with a second flange nut 6 through a thread, and the rear end of the threaded rod 4 is screwed with a first flange nut 5 through a thread. The lower end of the middle support block 1 is fixed with a connecting block 9 through waterproof glue, and a protective net 10 is fixed on the outside of the connecting block 9. A plurality of reinforcement blocks 7 are provided, and the plurality of reinforcement blocks 7 are symmetrically welded around the upper edge of the spiral spring plate 2, and a plurality of extension bolts 8 are inserted in the plurality of reinforcement blocks 7 through the thread principle.

[0019] As the first embodiment of the utility model: the rear end of the second flanged nut 6 abuts against the left front side of the spiral spring plate 2. The added spiral spring plate 2 is made of spring steel, which has good elasticity and is not prone to rupture, and its own gap does not hinder subsequent drainage. The first flanged nut 5 abuts against one side of the inside of the spiral spring plate 2. The added first flanged nut 5 and the second flanged nut 6 can prevent the threaded rod 4 from sliding out of the spiral spring plate 2 by itself. The set threaded rod 4 can also enhance the local strength of the spiral spring plate 2. The edge of the protective net 10 is connected to the lower end of the outer side of the spiral spring plate 2 through multiple welding sheets 11. The added protective net 10 can support and buffer the spiral spring plate 2 when it is deformed downward under force. Multiple lengthened bolts 8 are inserted into the inner wall of the drainage well, and the spiral spring plate 2 is horizontally installed in the drainage well. The added multiple lengthened bolts 8 facilitate the horizontal installation of the spiral spring plate 2.

[0020] As the second embodiment of the utility model: in actual use, according to the size of the drainage well, the threaded rod 4 is inserted between multiple spare through holes 3 at appropriate positions, and then by tightening the first flanged nut 5 or the second flanged nut 6, the spiral spring plate 2 can be forced to shrink locally, thereby slightly changing the overall appropriate size of the spiral spring plate 2 (Note: this spiral spring plate 2 is suitable for drainage wells of similar sizes, and other drainage wells that are too large or too small should reselect spiral spring plates 2 of appropriate sizes). Then, the spiral spring plate 2 is placed horizontally in the drainage well, and an external wrench is used to penetrate the threaded ends of multiple extension bolts 8 through multiple reinforcement blocks 7 through the thread principle and tightly insert them into the inner wall of the drainage well, so as to complete the horizontal installation of the spiral spring plate 2. The added spiral spring plate 2 is made of spring steel, has good elasticity, is not prone to rupture, and its own gap does not hinder subsequent drainage. The protective net 10 can support and buffer the spiral spring plate 2 when it is deformed downward under force, and does not affect the subsequent drainage effect.

[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A spiral anti-fall manhole cover inner plate, comprising a middle support block (1), a spiral spring plate (2), a threaded rod (4), a protective net (10) and a reinforcement block (7), characterized in that: A spiral spring plate (2) is horizontally mounted on the outside of the middle support block (1), and spare through holes (3) are provided through the left front sides of the middle support block (1) and the spiral spring plate (2); The threaded rod (4) is inserted into several of the spare through holes (3); the front end of the threaded rod (4) is screwed with a second flanged nut (6) through a thread; the rear end of the threaded rod (4) is screwed with a first flanged nut (5) through a thread; the lower end of the middle support block (1) is fixed with a connecting block (9) through a waterproof adhesive; a protective net (10) is fixed to the outside of the connecting block (9); a plurality of the reinforcing blocks (7) are provided; the plurality of the reinforcing blocks (7) are symmetrically welded around the upper edge of the spiral spring plate (2); and a plurality of lengthening bolts (8) are inserted into the plurality of the reinforcing blocks (7) through the threaded principle.

2. The spiral anti-fall manhole cover inner plate according to claim 1, characterized in that: The rear end of the second flanged nut (6) abuts against the left front side of the spiral spring plate (2).

3. The spiral anti-fall manhole cover inner plate according to claim 1, characterized in that: The first flanged nut (5) abuts against one side of the inner portion of the spiral spring plate (2).

4. The spiral anti-fall manhole cover inner plate according to claim 1, characterized in that: The edge of the protective net (10) is connected to the lower end of the outer side of the spiral spring plate (2) via a plurality of welding sheets (11).

5. The spiral anti-fall manhole cover inner plate according to claim 1, characterized in that: The plurality of lengthened bolts (8) are all inserted into the inner wall of the drainage well.

6. The spiral anti-fall manhole cover inner plate according to claim 1, characterized in that: The spiral spring plate (2) is installed horizontally in the drainage well.

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