Prefabricated reinforced concrete manhole cover plate device

Abstract

The utility model relates to the technical field of well cover plates, in particular to a prefabricated reinforced concrete inspection well cover plate device which comprises an inspection well, a step is arranged on the inner wall of the inspection well, a well cover plate is arranged at the top end of the step, a handle cavity is formed in the middle end of the outer wall of the well cover plate, and the handle cavity is connected with a protection plate through a protection structure. A linear rotating shaft is arranged at the top end of the outer wall of the well lid plate and connected with evenly-distributed limiting holes through a limiting structure. The manhole cover plate can be opened and closed more easily through matched use of the through hole and the grip in the protection structure, the protection structure can protect the grip from being corroded by rainwater, accumulated water and the like can be drained through the drainage hole 10, and when the protection structure cannot be opened, the manhole cover plate can still be opened through the through hole, so that the manhole cover plate is convenient to use. And the well cover plate is tightly limited in the inspection well through the limiting structure, the well cover plate cannot be opened at will, and damage to pedestrians and internal pipelines is greatly avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a prefabricated reinforced concrete inspection manhole cover device. Background Art

[0002] Prefabricated reinforced concrete inspection wells play an important role in construction and municipal engineering. Specifically, their functions are mainly reflected in the following aspects: 1. Urban sewage discharge and reception, 2. Convenient installation and maintenance, 3. Corrosion resistance, wear resistance and environmental protection, 4. An important role in rainwater and sewage separation.

[0003] A prefabricated reinforced concrete inspection manhole cover device with application number CN201420250579.2 includes a manhole cover, and two bolt holes are symmetrically opened on the manhole cover, and the two bolt holes include a large hole for supporting the bolt head of the bolt and a small hole for passing the screw rod of the bolt, and bolts with holes in the bolt head are inserted in the two bolt holes, and the bolt head of the bolt is pressed on a gasket installed in the large hole, and the screw rod of the bolt is arranged through the small hole, and an upper gasket, a spring and a lower gasket are sequentially sleeved on the screw rod located below the manhole cover, and a nut threadedly connected to the lower end of the screw rod is pressed on the lower gasket, and the height of the bolt head of the bolt is less than or equal to the depth of the large hole.

[0004] The above patent document has the beneficial effects of making construction convenient, fast and flexible, effectively reducing the complexity of construction and improving work efficiency. However, after being placed for a long time, the bolts and springs will be damaged due to erosion by rainwater, making it inconvenient to open the manhole cover. In addition, conventional manhole covers are not equipped with baffles, so the manhole cover can be opened at will, which can easily cause damage to passers-by and internal pipes. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the existing manhole cover that after being placed for a long time, the bolts and springs will be damaged due to erosion by rainwater, etc., making it inconvenient to open the manhole cover, and the conventional manhole cover is not provided with a baffle, so the manhole cover can be opened at will, which is easy to cause damage to passers-by and internal pipes. A prefabricated reinforced concrete inspection manhole cover device is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A prefabricated reinforced concrete manhole cover device comprises an inspection manhole, wherein the inner wall of the inspection manhole is provided with a step, a manhole cover is provided at the top of the step, a handle cavity is opened at the middle end of the outer wall of the manhole cover, the handle cavity is connected to a protection plate through a protective structure, a straight-line rotating shaft is provided at the top of the outer wall of the manhole cover, and the straight-line rotating shaft is connected to uniformly distributed limiting holes through a limiting structure.

[0008] Preferably, the top of the manhole cover is provided with symmetrically distributed through holes, and the edge of the handle cavity is provided with an auxiliary groove.

[0009] Preferably, the protective structure includes a handle, a drainage hole, a fixed column, a sliding hole, and an anti-detachment cover. The handle is fixedly connected to the bottom end of the inner wall of the handle cavity, the drainage hole is arranged at the center of the bottom end of the inner wall of the handle cavity, the fixed column is fixedly connected to the bottom end of the inner wall of the handle cavity, the sliding hole is arranged at the top end of the protective plate, and the anti-detachment cover is fixedly connected to the top end of the fixed column.

[0010] Preferably, the fixing column is slidably connected to the protection plate, the anti-drop cover is slidably connected to the sliding hole, and the protection plate is slidably connected to the inner wall of the handle cavity.

[0011] Preferably, the limiting structure includes symmetrically distributed gears, evenly distributed racks, and limiting columns. The gears are fixedly connected to the outer wall of the straight-line rotating shaft. The top of the manhole cover is provided with a symmetrically distributed limiting cavity. The rack is slidably connected to the limiting cavity, and the limiting column is fixedly connected to the bottom end of the inner wall of the limiting cavity.

[0012] Preferably, the gear and the rack are meshed with each other, the rack is slidably connected to the limiting column, and one end of the rack extending out of the manhole cover is slidably connected to the limiting hole.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the utility model is in use, the through hole and the handle in the protective structure can be used in coordination to make the opening and closing of the manhole cover easier. The protective structure can protect the handle from being eroded by rainwater, and the accumulated water can also be discharged through the drainage hole 10. When the protective structure cannot be opened, the through hole can still be used to open the manhole cover.

[0015] 2. When the utility model is in use, the manhole cover can be tightly restricted in the inspection well by the limiting structure, and it will not be opened at will by other people, thus greatly avoiding damage to pedestrians and internal pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a prefabricated reinforced concrete inspection well cover device proposed by the utility model;

[0017] Figure 2 A schematic diagram of a half-section three-dimensional structure of a prefabricated reinforced concrete inspection well cover device proposed by the utility model;

[0018] Figure 3 A schematic diagram of the three-dimensional structure of a manhole cover of a prefabricated reinforced concrete manhole cover device proposed by the utility model;

[0019] Figure 4 A schematic diagram of a half-section three-dimensional structure of a manhole cover of a prefabricated reinforced concrete manhole cover device proposed by the utility model;

[0020] Figure 5 This is an enlarged view of structure A of a prefabricated reinforced concrete inspection well cover device proposed in the utility model.

[0021] In the figure: 1 inspection well, 2 steps, 3 well cover, 4 handle cavity, 5 protection plate, 6 straight shaft, 7 limiting hole, 8 through hole, 9 handle, 10 drainage hole, 11 fixing column, 12 sliding hole, 13 anti-drop cover, 14 gear, 15 rack, 16 limiting column, 17 auxiliary groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 5 A prefabricated reinforced concrete inspection well cover device comprises an inspection well 1, the inner wall of the inspection well 1 is provided with a step 2, a well cover 3 is provided on the top of the step 2, a handle cavity 4 is opened at the middle end of the outer wall of the well cover 3, the handle cavity 4 is connected with a protection plate 5 through a protective structure, a straight-line rotating shaft 6 is provided at the top of the outer wall of the well cover 3, and the straight-line rotating shaft 6 is connected with uniformly distributed limiting holes 7 through a limiting structure.

[0024] Furthermore, symmetrically distributed through holes 8 are provided at the top of the manhole cover plate 3 , and auxiliary grooves 17 are provided at the edge of the handle cavity 4 .

[0025] The through hole 8 assists in opening the manhole cover 3 and can serve as a warning when the inspection well is blocked and water flows out. The auxiliary groove 17 assists in opening the protective plate 5 .

[0026] Furthermore, the protective structure includes a handle 9, a drainage hole 10, a fixed column 11, a sliding hole 12, and an anti-detachment cover 13. The handle 9 is fixedly connected to the bottom end of the inner wall of the handle cavity 4, the drainage hole 10 is arranged at the center of the bottom end of the inner wall of the handle cavity 4, the fixed column 11 is fixedly connected to the bottom end of the inner wall of the handle cavity 4, the sliding hole 12 is arranged at the top end of the protective plate 5, and the anti-detachment cover 13 is fixedly connected to the top end of the fixed column 11.

[0027] Among them, the protective structure is achieved by setting the handle 9 in the handle cavity 4, and the protection plate 5 is slidably connected to the handle cavity 4. The protection plate 5 can be lifted to a position away from the handle cavity 4 at the bottom, and then rotated around the fixed column 11 to expose the handle cavity 4 to the outside, making it convenient to open the manhole cover 3 through the handle 9.

[0028] Furthermore, the fixing column 11 is slidably connected to the protection plate 5 , the anti-drop cover 13 is slidably connected to the sliding hole 12 , and the protection plate 5 is slidably connected to the inner wall of the handle cavity 4 .

[0029] The depth of the slide hole 12 can support the protection plate 5 to move upward to a position away from the handle cavity 4 , and the size of the anti-detachment cover 13 is adapted to the size of the slide hole 12 .

[0030] Furthermore, the limiting structure includes symmetrically distributed gears 14, evenly distributed racks 15, and limiting columns 16. The gears 14 are fixedly connected to the outer wall of the straight-line rotating shaft 6. A symmetrically distributed limiting cavity is opened at the top of the manhole cover 3. The racks 15 are slidably connected to the limiting cavity, and the limiting columns 16 are fixedly connected to the bottom end of the inner wall of the limiting cavity.

[0031] Among them, the limiting structure is achieved by manually rotating the straight shaft 6, the straight shaft 6 drives the gear 14 to rotate, and the gear 14 drives the racks 15 on both sides to move in opposite directions, so that the racks 15 are connected to the limiting holes 7, thereby achieving the limitation of the manhole cover 3.

[0032] Furthermore, the gear 14 and the rack 15 are meshed with each other, the rack 15 is slidably connected to the limiting column 16 , and one end of the rack 15 extending out of the manhole cover plate 3 is slidably connected to the limiting hole 7 .

[0033] The position and size of the rack 15 match the position and size of the limiting hole 7 , so that the rack 15 can be retracted into the manhole cover 3 but will not deviate from the position of the limiting column 16 .

[0034] Working principle: First, when the manhole cover 3 needs to be opened, the protective plate 5 can be lifted up through the auxiliary groove 17, and then the protective plate 5 is lifted to the position of the bottom away from the handle cavity 4, and then rotated around the fixed column 11 to expose the handle cavity 4 to the outside world, so as to facilitate the opening of the manhole cover 3 through the handle 9. When the handle 9 is damaged, the manhole cover 3 can also be opened through the through hole 8.

[0035] Then, when it is necessary to limit the position of the manhole cover 3, the straight shaft 6 can be manually rotated, and the straight shaft 6 drives the gear 14 to rotate, and the gear 14 drives the racks 15 on both sides to move in opposite directions, so that the racks 15 are connected with the limiting holes 7, so as to limit the manhole cover 3. To open it, you only need to twist the straight shaft 6 in the opposite direction, which makes the opening and closing of the manhole cover easier. The protective structure can protect the handle from being eroded by rainwater, and the manhole cover is tightly confined in the inspection well through the limiting structure, and will not be opened at will by others, which greatly avoids damage to pedestrians and internal pipes.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prefabricated reinforced concrete manhole cover device, comprising a manhole (1), characterized in that: The inner wall of the inspection well (1) is provided with a step (2), a well cover (3) is provided at the top of the step (2), a handle cavity (4) is provided at the middle end of the outer wall of the well cover (3), the handle cavity (4) is connected to a protection plate (5) via a protective structure, and a straight-line rotating shaft (6) is provided at the top of the outer wall of the well cover (3), and the straight-line rotating shaft (6) is connected to uniformly distributed limiting holes (7) via a limiting structure.

2. A prefabricated reinforced concrete manhole cover device according to claim 1, characterized in that: The top of the manhole cover (3) is provided with symmetrically distributed through holes (8), and the edge of the handle cavity (4) is provided with an auxiliary groove (17).

3. The prefabricated reinforced concrete manhole cover device according to claim 1, characterized in that: The protective structure comprises a handle (9), a drainage hole (10), a fixing column (11), a sliding hole (12), and an anti-detachment cover (13); the handle (9) is fixedly connected to the bottom end of the inner wall of the handle cavity (4); the drainage hole (10) is arranged at the center of the bottom end of the inner wall of the handle cavity (4); the fixing column (11) is fixedly connected to the bottom end of the inner wall of the handle cavity (4); the sliding hole (12) is arranged at the top end of the protective plate (5); and the anti-detachment cover (13) is fixedly connected to the top end of the fixing column (11).

4. A prefabricated reinforced concrete manhole cover device according to claim 3, characterized in that: The fixing column (11) is slidably connected to the protection plate (5), the anti-drop cover (13) is slidably connected to the sliding hole (12), and the protection plate (5) is slidably connected to the inner wall of the handle cavity (4).

5. The prefabricated reinforced concrete manhole cover device according to claim 1, characterized in that: The limiting structure comprises symmetrically distributed gears (14), evenly distributed racks (15), and a limiting column (16); the gears (14) are fixedly connected to the outer wall of the straight-line rotating shaft (6); a symmetrically distributed limiting cavity is provided at the top of the manhole cover (3); the racks (15) are slidably connected to the limiting cavity; and the limiting column (16) is fixedly connected to the bottom end of the inner wall of the limiting cavity.

6. A prefabricated reinforced concrete manhole cover device according to claim 5, characterized in that: The gear (14) and the rack (15) are meshed with each other, the rack (15) is slidably connected to the limiting column (16), and one end of the rack (15) extending out of the manhole cover plate (3) is slidably connected to the limiting hole (7).

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