Prefabricated manhole cover

Abstract

The utility model relates to a prefabricated manhole cover, and relates to the technical field of manhole covers, the prefabricated manhole cover comprises an upper cover and a lower cover, the upper cover is provided with a drainage groove, the lower cover is provided with a plurality of drainage ports communicated with the drainage groove, a turning cover is arranged in the drainage groove, and the turning cover is rotatably connected with the upper cover along the axis close to the horizontal direction of the side edge of the turning cover; the upper end face of the turning cover is flush with the upper end face of the upper cover, the lower end face of the turning cover abuts against the lower cover, a groove is formed in the lower end face of the turning cover, a supporting rod is rotationally connected into the groove, a clamping groove matched with the supporting rod is formed in the lower cover, the turning cover and the supporting rod are the same in rotating direction, and the upper cover and the lower cover are integrally formed. The method has the effect of improving the safety.

Description

Technical Field

[0001] This application relates to the field of manhole cover technology, and in particular to a prefabricated manhole cover. Background Technology

[0002] In current urban infrastructure, road drainage is one of the most important projects. Effective drainage ensures the safety and smooth flow of road traffic. Typically, accumulated water flows into the sewer system through drainage holes on top of manhole covers. Drainage wells are a common method of drainage, and manhole covers are usually installed at the openings of these wells for urban protection. Drainage management personnel open the manhole covers at waterlogged areas to allow rainwater to drain directly from the manhole openings, accelerating the drainage process.

[0003] The relevant technology can be found in Chinese Patent No. CN205975696U, which discloses a clamp-on, openable, anti-theft drainage manhole cover. This cover includes two semi-circular cover units, the straight edges of which are rotatably fixed to a connecting shaft. The two ends of the connecting shaft are fixed to the manhole ring of the drainage manhole. This manhole cover has an anti-theft function, can be quickly opened when needed to rapidly drain road water, and can be operated by a single person, providing great convenience for drainage management personnel.

[0004] Regarding the aforementioned technologies, opening the manhole cover exposes the manhole, which can lead to poor visibility during rainy days or at night, potentially causing people to slip and fall. Utility Model Content

[0005] To improve safety, this application provides a prefabricated manhole cover.

[0006] This application provides a prefabricated manhole cover, which adopts the following technical solution:

[0007] A prefabricated manhole cover includes an upper cover and a lower cover. The upper cover has a drainage groove, and the lower cover has several drainage outlets communicating with the drainage groove. A flip cover is provided in the drainage groove. The flip cover is rotatably connected to the upper cover along a horizontal axis near the side of the flip cover. The upper end face of the flip cover is flush with the upper end face of the upper cover, and the lower end face of the flip cover abuts against the lower cover. A groove is provided on the lower end face of the flip cover, and a support rod is rotatably connected in the groove. A slot adapted to the support rod is provided on the lower cover. The flip cover and the support rod rotate in the same direction. The upper cover and the lower cover are integrally formed.

[0008] By adopting the above technical solution, when the flip cover is in the closed position, the support rod is located in the groove of the flip cover, and the upper surface of the flip cover is flush with the upper surface of the top cover. When drainage is required, the support rod is rotated out of the groove by rotating the flip cover, and the flip cover is fully opened. The end of the support rod away from the flip cover is then inserted into the slot, which supports and fixes the flip cover. At this time, the water flows into the drainage well through the drainage channel of the top cover and the drainage outlet of the bottom cover. The bottom cover has a partial structure at the drainage channel so that when a pedestrian steps in, the bottom cover can provide support and prevent the pedestrian from falling into the well. At the same time, after the flip cover is fixed, it is vertically higher than the water surface, making it visible to pedestrians and serving as a warning, thus improving safety.

[0009] Optionally, the side of the flip cover away from its own rotation axis and that of the upper cover is an inclined surface. A locking groove is formed on the inclined surface, and a sliding groove is formed on the side wall of the drainage groove near the locking groove. The horizontal distance between the side wall of the drainage groove with the sliding groove and the inclined surface gradually increases from top to bottom. A locking block and an elastic element are provided in the sliding groove. The two ends of the elastic element are fixedly connected to the locking block and the sliding groove wall, respectively. In the natural state of the elastic element, the end of the locking block near the elastic element is located in the sliding groove, and the end of the locking block away from the elastic element is located in the locking groove. The locking block is slidably connected to the upper cover in a direction perpendicular to the rotation axis of the flip cover. An unlocking device for disengaging the locking block from the locking groove is provided in the locking groove.

[0010] By adopting the above technical solution, the inclined surface design allows the flip cover to squeeze the locking block into the sliding groove when closed. When the locking block coincides with the locking groove, the locking block enters the locking groove under the action of the elastic element, realizing the automatic locking of the flip cover and improving the safety and stability of the manhole cover. At the same time, the design of the unlocking device allows the flip cover to be opened quickly when drainage is needed, improving the convenience of drainage.

[0011] Optionally, the unlocking device includes a rotating column and a rotating rod. The lower end of the rotating column is fixedly connected to the upper end of the rotating rod. The upper surface of the rotating column is flush with the upper surface of the flip cover. The rotating column is rotatably connected to the flip cover along its own axis. The rotating rod is located in the locking groove. The rotating column is used to drive the rotating rod to push the locking block out of the locking groove.

[0012] By adopting the above technical solution, the rotating column rotates, causing the rotating rod to rotate. The side wall of the rotating rod abuts against the locking block. Continuing to rotate the rotating column causes the rotating rod to squeeze the locking block out of the locking groove, and then the flip cover can be opened. Unlocking can be achieved with a simple rotating action, making the operation simple and quick.

[0013] Optionally, the upper end face of the rotating column is provided with a rotating groove, which is used to insert a tool that is compatible with the rotating groove to rotate the rotating column.

[0014] By adopting the above technical solution, the slot requires a specific tool for unlocking, which improves the security of the equipment and reduces the risk of it being opened by others.

[0015] Optionally, a water inlet groove is provided on the upper surface of the flip cover, and the water inlet groove is connected to the drain hole.

[0016] By adopting the above technical solution, the design of the water inlet trough allows rainwater to flow into the drainage trough even when there is little water on the road surface and the flip cover does not need to be opened. At the same time, tools can be inserted into the water inlet trough to rotate the flip cover or to remove the upper and lower covers together from the manhole when the flip cover is closed.

[0017] Optionally, a safety warning strip is provided on the lower end face of the flip cover, and the safety warning strip is located on the side of the flip cover away from its own axis of rotation with respect to the upper cover.

[0018] By adopting the above technical solution, the safety warning strip can play a significant warning role when the flip cover is opened, reminding pedestrians to pay attention to safety and reducing the probability of safety accidents.

[0019] Optionally, the upper surfaces of both the top cover and the flip cover are provided with anti-slip texture.

[0020] By adopting the above technical solutions, the friction of the manhole cover surface is increased, improving the safety of pedestrians walking on it, especially in wet and slippery environments such as rainy days.

[0021] Optionally, there are two drainage channels, with two flip covers symmetrically arranged. The rotation axes of the two flip covers are parallel to each other and not collinear. The rotation axis between the flip cover and the top cover is parallel to the side of the two drainage channels that are close to each other.

[0022] By adopting the above technical solution, the design of the double drainage channel improves the drainage capacity of the manhole cover. At the same time, the symmetrically arranged flip cover allows water to enter from both sides of the manhole cover at the same time, reducing the impact of water flow on the other side of the flip cover when water enters from one side. The impact causes the support rod to disengage from the slot, causing the flip cover to close and improving the stability of the flip cover.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When the flip cover is in the closed position, the support rod is located in the groove of the flip cover, and the upper surface of the flip cover is flush with the upper surface of the top cover. When drainage is needed, the support rod is rotated out of the groove by rotating the flip cover, and the flip cover is fully opened. The end of the support rod away from the flip cover is then inserted into the slot, which supports and fixes the flip cover. At this time, the water flows into the drainage well through the drainage channel of the top cover and the drainage outlet of the bottom cover. The bottom cover has a partial structure at the drainage channel so that when a pedestrian steps in, the bottom cover can provide support and prevent the pedestrian from stepping into the well. At the same time, after the flip cover is fixed, it is vertically higher than the water surface, making it visible to pedestrians and serving as a warning, thus improving safety.

[0025] 2. The inclined surface design allows the flip cover to press the locking block into the sliding groove when closed. When the locking block aligns with the locking groove, the elastic element causes the locking block to enter the locking groove, achieving automatic locking of the flip cover and improving the safety and stability of the manhole cover. Simultaneously, the unlocking device design allows for quick opening of the flip cover when drainage is needed, improving the convenience of drainage.

[0026] 3. The rotating column drives the rotating rod to rotate, and the side wall of the rotating rod abuts against the locking block. Continue to rotate the rotating column so that the rotating rod pushes the locking block out of the locking groove. Then the flip cover can be opened. The lock can be unlocked by a simple rotating action. The operation is simple and quick. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of a prefabricated manhole cover.

[0028] Figure 2 This is a top view of a prefabricated manhole cover.

[0029] Figure 3 yes Figure 2 A cross-sectional view along the AA direction.

[0030] Figure 4 yes Figure 3 Enlarged diagram of part B.

[0031] Figure 5 This is a structural diagram of the unlocking device, locking block, and elastic element.

[0032] Explanation of reference numerals in the attached drawings: 1. Top cover; 11. Drainage channel; 12. Slide groove; 13. Locking block; 14. Elastic element; 2. Bottom cover; 21. Drain outlet; 22. Slot; 3. Flip cover; 31. Groove; 32. Support rod; 33. Inclined surface; 34. Locking groove; 35. Water inlet groove; 36. Safety warning strip; 4. Unlocking device; 41. Rotating column; 42. Rotating rod; 43. Rotating groove. Detailed Implementation

[0033] The present application will be further described in detail below with reference to all the accompanying drawings.

[0034] This application discloses a prefabricated manhole cover.

[0035] Reference Figure 1A prefabricated manhole cover includes an upper cover 1 and a lower cover 2, which are integrally molded, resulting in a stable structure and long service life. The upper cover 1 has a drainage groove 11, and the lower cover 2 has several drainage outlets 21 connected to the drainage groove 11. A flip cover 3 is installed inside the drainage groove 11. Anti-slip textures are added to the upper surfaces of both the upper cover 1 and the flip cover 3. The anti-slip textures feature an uneven surface design, increasing friction with shoe soles and other contact surfaces, thus improving pedestrian safety, especially in wet and slippery environments such as rainy days.

[0036] Reference Figure 1 The flip cover 3 is rotatably connected to the upper cover 1 along a horizontal axis near its side. A groove 31 is provided on the lower end face of the flip cover 3. In normal use, the flip cover 3 is in the closed position, with the support rod 32 inserted into the groove 31, forming a single unit with the upper cover 1. The upper end face of the flip cover 3 is flush with the upper end face of the upper cover 1, and the lower end face of the flip cover 3 abuts against the lower cover 2. The support rod 32 is rotatably connected within the groove 31, and the lower cover 2 has a slot 22 that matches the support rod 32. When drainage is required, the flip cover 3 is rotated, causing the support rod 32 to rotate out of the groove 31, fully opening the flip cover 3. The end of the support rod 32 furthest from the flip cover 3 is then inserted into the slot 22, providing support and fixing the flip cover 3, ensuring unobstructed drainage in the drainage channel 11 and allowing water flow. Simultaneously, after the flip cover 3 is flipped and fixed, its vertical height is above the water surface, making it visible to pedestrians and serving as a warning, thus improving safety.

[0037] Reference Figure 1 A water inlet groove 35 is provided on the upper surface of the flip cover 3, and the water inlet groove 35 is connected to the drainage hole. The design of the water inlet groove 35 allows rainwater to flow into the drainage groove 11 even when there is little water on the road surface and the flip cover 3 does not need to be opened. At the same time, a tool can be inserted into the water inlet groove 35 to rotate the flip cover 3, or the upper cover 1 and the lower cover 2 can be removed from the manhole together when the flip cover 3 is closed.

[0038] Reference Figure 1 A safety warning strip 36 is added to the lower end of the flip cover 3. The safety warning strip 36 is made of a bright color or a reflective strip, which improves the visual visibility of the manhole cover. When the flip cover 3 is opened, the safety warning strip 36 is located near the top of the flip cover 3, which is used to remind pedestrians to pay attention to safety at night or in low light conditions, so as to avoid safety accidents such as collisions or falls.

[0039] Reference Figure 1To reduce the impact of water flow on the other side of the flap 3 when water enters from one side, which causes the support rod 32 to disengage from the slot 22 and close the flap 3, thus improving the stability of the flap 3, the number of drainage channels 11 is increased to two. Correspondingly, two flaps 3 are also provided, located within the two drainage channels 11 respectively, and have the same structural design, with the two flaps 3 symmetrically arranged. The rotation axes of the two flaps 3 are parallel and non-collinear, and the rotation axis between the flap 3 and the upper cover 1 is parallel to the side of the two drainage channels 11 that are close to each other. This design allows the manhole cover to distribute water pressure more evenly during drainage, improving drainage stability and efficiency.

[0040] Reference Figure 2 and Figure 3 The side of the flip cover 3 away from its own axis of rotation with the upper cover 1 is an inclined surface 33. A locking groove 34 is provided on the inclined surface 33. A sliding groove 12 is provided on the side wall of the drainage groove 11 near the locking groove 34. A locking block 13 and an elastic element 14 are provided in the sliding groove 12. The locking block 13 is slidably connected to the upper cover 1 in a direction perpendicular to the axis of rotation of the flip cover 3. The two ends of the elastic element 14 are fixedly connected to the locking block 13 and the wall of the sliding groove 12, respectively. When the flip cover 3 is closed, the elastic element 14 is in a natural state. The end of the locking block 13 near the elastic element 14 is located in the sliding groove 12, and the end of the locking block 13 away from the elastic element 14 is located in the locking groove 34. Under the action of the elastic element 14, the locking block 13 always maintains the tendency to press into the locking groove 34, thus tightly locking the flip cover 3.

[0041] Reference Figure 3 The horizontal distance between the side wall of the drainage trough 11 with the sliding groove 12 and the inclined surface 33 gradually increases from top to bottom. This design allows the flip cover 3 to avoid the side wall of the drainage trough 11 when it is opened, preventing the side wall of the flip cover 3 from getting stuck and unable to open. At the same time, when the flip cover 3 is in the open state, one end of the locking block 13 is outside the sliding groove 12. When the flip cover 3 is closed, the inclined surface 33 abuts against the side of the upper end face of the locking block 13, squeezing the locking block 13 to move into the sliding groove 12. When the locking block 13 coincides with the locking groove 34, under the action of the elastic element 14, the locking block 13 enters the locking groove 34, realizing the automatic locking of the flip cover 3, which improves the safety and stability of the manhole cover.

[0042] Reference Figure 4 and Figure 5The locking groove 34 is equipped with an unlocking device 4 for disengaging the locking block 13 from the locking groove 34. When the flip cover 3 needs to be opened, the unlocking device 4 is operated to disengage the locking block 13 from the locking groove 34, releasing the locked state. Then, the flip cover 3 can be rotated to drain water. The unlocking device 4 consists of two parts: a rotating column 41 and a rotating rod 42. The rotating rod 42 is located inside the locking groove 34. The lower end of the rotating column 41 is fixedly connected to the upper end of the rotating rod 42. The rotating column 41 is rotatably connected to the flip cover 3 along its own axis, and the upper end face of the rotating column 41 is flush with the upper end face of the flip cover 3. A rotating groove 43 is also provided on the upper end face of the rotating column 41, which allows a specific tool to be inserted into the rotating groove 43 to rotate the rotating column 41, improving the security of the equipment and reducing the risk of it being opened by others. Rotating the rotating column 41 drives the rotating rod 42 to rotate. The side wall of the rotating rod 42 abuts against the locking block 13. Continuing to rotate the rotating column 41 causes the rotating rod 42 to push the locking block 13 out of the locking groove 34. Then the flip cover 3 can be opened. The lock can be unlocked by a simple rotating action. The operation is simple and quick.

[0043] The implementation principle of a prefabricated manhole cover according to an embodiment of this application is as follows: When the flip cover 3 is in the closed position, the support rod 32 is located in the groove 31 of the flip cover 3, and the upper end face of the flip cover 3 is flush with the upper end face of the upper cover 1. When drainage is required, by rotating the flip cover 3, the support rod 32 is rotated out of the groove 31, the flip cover 3 is fully opened, and the end of the support rod 32 away from the flip cover 3 is inserted into the slot 22, which serves to support and fix the flip cover 3. At this time, the water flows into the drainage well through the drainage channel 11 of the upper cover 1 and the drainage outlet 21 of the lower cover 2. The lower cover 2 has a partial structure at the drainage channel 11 so that when a pedestrian steps in, the lower cover 2 can provide support and prevent the pedestrian from stepping into the well. At the same time, after the flip cover 3 is fixed, the flip cover 3 is higher than the water surface in the vertical direction, so that pedestrians can see it and it also serves as a warning, improving safety.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A prefabricated manhole cover, characterized in that: The device includes an upper cover (1) and a lower cover (2). The upper cover (1) has a drainage groove (11), and the lower cover (2) has several drainage outlets (21) that communicate with the drainage groove (11). A flip cover (3) is provided in the drainage groove (11). The flip cover (3) is rotatably connected to the upper cover (1) along the horizontal axis close to the side of the flip cover (3). The upper end face of the flip cover (3) is flush with the upper end face of the upper cover (1), and the lower end face of the flip cover (3) abuts against the lower cover (2). A groove (31) is provided on the lower end face of the flip cover (3). A support rod (32) is rotatably connected in the groove (31). A slot (22) that matches the support rod (32) is provided on the lower cover (2). The flip cover (3) and the support rod (32) rotate in the same direction. The upper cover (1) and the lower cover (2) are integrally formed.

2. A prefabricated manhole cover according to claim 1, characterized in that: The side of the flip cover (3) away from its own axis of rotation with the upper cover (1) is an inclined surface (33). A locking groove (34) is provided on the inclined surface (33). A sliding groove (12) is provided on the side wall of the drainage groove (11) near the locking groove (34). The horizontal distance between the side wall of the drainage groove (11) with the sliding groove (12) and the inclined surface (33) gradually increases from top to bottom. A locking block (13) and an elastic element (14) are provided in the sliding groove (12). The two ends of the elastic element (14) are respectively locked. The locking block (13) and the sliding groove (12) are fixedly connected. In the natural state of the elastic element (14), the end of the locking block (13) close to the elastic element (14) is located in the sliding groove (12), and the end of the locking block (13) away from the elastic element (14) is located in the locking groove (34). The locking block (13) is slidably connected to the upper cover (1) in a direction perpendicular to the rotation axis of the flip cover (3). The locking groove (34) is provided with an unlocking device (4) for disengaging the locking block (13) from the locking groove (34).

3. A prefabricated manhole cover according to claim 2, characterized in that: The unlocking device (4) includes a rotating column (41) and a rotating rod (42). The lower end of the rotating column (41) is fixedly connected to the upper end of the rotating rod (42). The upper surface of the rotating column (41) is flush with the upper surface of the flip cover (3). The rotating column (41) is rotatably connected to the flip cover (3) along its own axis. The rotating rod (42) is located in the locking groove (34). The rotating column (41) is used to drive the rotating rod (42) to push the locking block (13) out of the locking groove (34).

4. A prefabricated manhole cover according to claim 3, characterized in that: The upper end face of the rotating column (41) is provided with a rotating groove (43), which is used to insert a tool that is compatible with the rotating groove (43) to rotate the rotating column (41).

5. A prefabricated manhole cover according to claim 1, characterized in that: The upper surface of the flip cover (3) is provided with a water inlet groove (35), which is connected to the drain hole.

6. A prefabricated manhole cover according to claim 1, characterized in that: The lower end face of the flip cover (3) is provided with a safety warning strip (36), which is located on the side of the flip cover (3) away from its own rotation axis and the upper cover (1).

7. A prefabricated manhole cover according to claim 1, characterized in that: The upper surfaces of both the top cover (1) and the flip cover (3) are provided with anti-slip texture.

8. A prefabricated manhole cover according to claim 1, characterized in that: The drainage channel (11) is provided in two parts, and the two flip covers (3) are symmetrically arranged. The rotation axes of the two flip covers (3) are parallel to each other and not collinear. The rotation axis between the flip cover (3) and the top cover (1) is parallel to the side of the two drainage channels (11) that are close to each other.

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