Round manhole cover assembly with locking function

Abstract

The utility model describes a circular manhole cover assembly with a locking function, including: a manhole cover and a manhole ring matched with the manhole cover, a circumferential surface of the manhole cover is formed with a protrusion, the manhole ring has an inner side surface opposite to the circumferential surface of the manhole cover, the inner side surface of the manhole ring is formed with a groove matching the protrusion, the groove includes a locking area, a transition area and an entry and exit area, when the manhole cover is buckled with the manhole ring, the protrusion enters the groove from the entry and exit area and reaches the locking area through the transition area by rotating the manhole cover, the transition area is inclined, and the high part of the transition area is close to the locking area, and the low part of the transition area is close to the entry and exit area. In the utility model, the manhole cover can be locked in the groove of the manhole ring by the protrusion, the structure is simple, the cost is low, and the groove includes an inclined transition area, the transition area allows the manhole cover to be taken out from the manhole ring only in a correct rotation mode, so under natural conditions, the stability of the manhole cover locking can be maintained for a long time.

Description

Technical Field

[0001] The utility model relates to the field of water conservancy projects, in particular to a circular manhole cover assembly with a locking function. Background Art

[0002] In urban construction, water conservancy construction is also a very important part. Drainage channels in cities generally need to be equipped with wellheads for drainage or maintenance at fixed distances. In order to prevent people or vehicles from falling into the well, manhole covers are also required.

[0003] Most of the existing manhole covers do not have a locking function. In heavy rainy days, due to the huge amount of water, the manhole cover is easily missing, which brings many dangers to people and vehicles. Therefore, people have invented a manhole cover with a locking function, such as setting a pressure cooker-like snap-fit ​​structure or adding an intelligent locking device.

[0004] However, the pressure cooker-like locking structure only needs horizontal rotation to unlock the manhole cover, and there is still a possibility of failure under the impact of water and vehicles over time; and the intelligent locking device has a complex structure, which is not conducive to reducing construction costs. Summary of the invention

[0005] In order to solve the problems in the above-mentioned background technology, the utility model provides a circular manhole cover assembly with a locking function.

[0006] The solution adopted by the utility model to solve its technical problems is: a circular manhole cover combination with a locking function, comprising: a manhole cover and a manhole ring matched with the manhole cover, the circumferential surface of the manhole cover is formed with a protrusion, the manhole ring has an inner side surface opposite to the circumferential surface of the manhole cover, the inner side surface of the manhole ring is formed with a groove matching the protrusion, the groove comprises a locking area, a transition area and an entry and exit area, when the manhole cover is buckled with the manhole ring, the protrusion enters the groove from the entry and exit area and reaches the locking area through the transition area by rotating the manhole cover, the transition area is inclined, and the high part of the transition area is close to the locking area, and the low part of the transition area is close to the entry and exit area.

[0007] In the present invention, the manhole cover can be locked in the groove of the manhole ring by the protrusion, which has a simple structure and low cost, and the groove includes a transition area that is arranged in an inclined manner, and the high point of the transition area is close to the locking area, so that the protrusion can be engaged in the locking area under the action of its own gravity after entering the locking area; at the same time, even in the case of water flow impact or vehicle rolling, the protrusion can still be locked in the locking area due to the obstruction of the inclined transition area; and when it needs to be taken out manually, it is only necessary to lift the manhole cover first, rotate it downward, and finally lift it up, which is convenient to operate. In other words, the present invention can make the manhole cover only be taken out from the manhole ring in the correct rotation mode, so under natural conditions, the stability of the manhole cover locking can be maintained for a long time.

[0008] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, the manhole cover includes a locking portion formed with the protrusion and a manhole cap formed on the locking portion and having a diameter larger than the locking portion. In this case, the locking portion can be locked and fixed with the manhole ring, and the manhole cap can be used to withstand the rolling of vehicles or people to protect the locking portion and prevent vehicles or people from falling into the manhole.

[0009] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, a plurality of through holes are formed in the axial direction of the manhole cover. In this case, rainwater can be discharged or discharged through the plurality of through holes, and at the same time, it is convenient for maintenance personnel to correctly rotate and remove the manhole cover through the through holes during maintenance.

[0010] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, the manhole ring includes a functional part formed with the groove and a reinforcement part formed on the functional part and used to cooperate with the roadbed to reinforce the manhole ring. In this case, the functional part can be used to lock the manhole cover, and the reinforcement part can be used to reinforce the functional part in the roadbed, thereby improving the stability of the manhole cover assembly.

[0011] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, the number of the protrusions and the grooves is multiple and equal. In this case, multiple protrusions and multiple grooves are more conducive to locking the manhole cover, thereby further improving the stability of the locking.

[0012] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, a plurality of protrusions are evenly distributed on the circumferential surface of the manhole cover, and a plurality of grooves are evenly distributed on the inner side surface of the manhole ring. In this case, under the premise of improving the stability of locking, the evenly distributed design can reduce the requirements of directionality, thereby making it easier for maintenance personnel to disassemble and assemble the manhole cover assembly.

[0013] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, the diameter of the manhole cap is larger than the functional part. In this case, the manhole cap can be placed on the manhole ring, thereby preventing vehicles, personnel, etc. from falling into the well.

[0014] According to the circular manhole cover assembly with locking function involved in the utility model, optionally, it also includes an elastic buffer pad arranged between the manhole cover and the functional part. In this case, the buffer pad can reduce the impact when vehicles or people run over it, thereby improving the comfort of vehicles or people passing through, and at the same time can reduce the wear between the manhole cover and the functional part of the manhole ring, thereby improving the service life of the manhole cover assembly.

[0015] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a circular manhole cover assembly with a locking function involved in an example of the present utility model;

[0017] Figure 2 This is a schematic diagram of the locking of the protrusions through the grooves in the circular manhole cover assembly with locking function involved in the example of the utility model;

[0018] Figure 3 This is a top view of a manhole cover in a circular manhole cover assembly with a locking function according to an example of the present utility model.

[0019] In the figure: 1…manhole cover assembly; 11…manhole cover; 12…manhole ring; 111…locking portion; 1111…protrusion; 112…manhole cap; 1121…through hole; 121…functional portion; 122…reinforcement portion; 1211…groove; 210…locking area; 211…transition area; 212…entry and exit area. DETAILED DESCRIPTION

[0020] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0021] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "inner", "outer" and the like used herein to indicate directions or positional relationships are based on directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. Unless otherwise specified, "plurality" means two or more.

[0022] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it 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, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0023] The utility model relates to a circular manhole cover assembly with a locking function. In order to facilitate the description of the circular manhole cover assembly with a locking function, it is sometimes referred to as a "circular manhole cover assembly" or a "manhole cover assembly".

[0024] Specifically, Figure 1 As shown, the manhole cover assembly 1 may include: a manhole cover 11 and a manhole ring 12 matched with the manhole cover 11. In some examples, the circumferential surface of the manhole cover 11 is formed with a protrusion 1111. In some examples, the manhole ring 12 has an inner side surface opposite to the circumferential surface of the manhole cover 11, and the inner side surface of the manhole ring 12 is formed with a groove 1211 matching the protrusion 1111. In this case, the manhole cover 11 can be locked in the groove 1211 of the manhole ring 12 by the protrusion 1111, which has a simple structure and low cost.

[0025] In particular, in the present invention, if Figure 1 As shown, the groove 1211 may include a locking region 210, a transition region 211, and an entry and exit region 212. Figure 2As shown, when the manhole cover 11 is buckled with the manhole ring 12, the protrusion 1111 enters the groove 1211 from the entry and exit area 212 and reaches the locking area 210 through the transition area 211 by rotating the manhole cover 11. The transition area 211 is inclined, and the high part of the transition area 211 is close to the locking area 210, and the low part of the transition area 211 is close to the entry and exit area 212. In this case, the groove 1211 includes the transition area 211 which is inclined, and the high part of the transition area 211 is close to the locking area 210, so that the protrusion 1111 can be engaged in the locking area 210 under the action of its own gravity after entering the locking area 210; at the same time, even in the case of water flow impact or vehicle rolling, the protrusion 1111 can still be locked in the locking area 210 due to the obstruction of the inclined transition area 211; and when it needs to be taken out manually, it only needs to lift the manhole cover 11, rotate it downward, and finally lift it up, which is convenient to operate. In other words, the present invention enables the manhole cover 11 to be removed from the manhole ring 12 only in a correct rotation mode, so that under natural conditions, the stability of the locking of the manhole cover 11 can be maintained for a long time.

[0026] In some examples, such as Figure 1 or Figure 3 As shown, the manhole cover 11 may include a locking portion 111 formed with a protrusion 1111 and a manhole cap 112 formed on the locking portion 111 and having a diameter larger than the locking portion 111. In this case, the locking portion 111 can be locked and fixed with the manhole ring 12, and the manhole cap 112 can be used to withstand the rolling of vehicles or personnel to protect the locking portion 111 and prevent vehicles or personnel from falling into the well.

[0027] In some examples, such as Figure 3 As shown, a plurality of through holes 1121 are formed in the axial direction of the manhole cover 11. The through holes 1121 can penetrate the locking portion 111 or the manhole cap 112 of the manhole cover 11. In this case, rainwater can be discharged or discharged through the plurality of through holes, and at the same time, during maintenance, it is also convenient for maintenance personnel to correctly rotate and remove the manhole cover 11 through the through holes 1121.

[0028] In some examples, the locking portion 111 may be in a round shape, and the through hole 1121 may pass through the locking portion 111 and the well cap 112. In other examples, see Figure 3 As shown, the locking portion 111 may be in a circular ring shape, and the through hole 1121 may pass through the well cap 112 .

[0029] In some examples, such as Figure 1As shown, the manhole ring 12 may include a functional portion 121 formed with a groove 1211 and a reinforcement portion 122 formed on the functional portion 121 and used to cooperate with the roadbed to reinforce the manhole ring 12. In this case, the functional portion 121 can be used to lock the manhole cover 11, and the reinforcement portion 122 can be used to reinforce the functional portion 121 in the roadbed, thereby improving the stability of the manhole cover assembly 1.

[0030] In some examples, such as Figure 1 or Figure 3 As shown, the number of protrusions 1111 and grooves 1211 can be multiple. For example, the number of protrusions 1111 and grooves 1211 can be 2, 3, 4, 5 or more. It should be noted that although only one groove 1211 is shown in the figure, in practice, the number of protrusions 1111 and grooves 1211 is preferably equal, and can be set one-to-one. In this case, multiple protrusions 1111 and multiple grooves 1211 are more conducive to locking the manhole cover 11, thereby further improving the stability of the locking.

[0031] In some examples, such as Figure 3 As shown, multiple protrusions 1111 can be evenly distributed on the circumferential surface of the manhole cover 11, and multiple grooves 1211 can be evenly distributed on the inner side of the manhole ring 12. In this case, under the premise of improving the stability of the locking, the evenly distributed design can reduce the requirements for directionality, thereby making it easier for maintenance personnel to disassemble and assemble the manhole cover assembly 1. For example, two protrusions 1111 can be distributed on the circumferential surface of the manhole cover 11 at an angular interval of 180°, or two grooves 1211 can be distributed on the inner side of the manhole ring 12 at an angular interval of 180°, and four protrusions 1111 can be distributed on the circumferential surface of the manhole cover 11 at an angular interval of 90° (see Figure 3 The distribution of the middle protrusion 1111a, the protrusion 1111b, the protrusion 1111c and the protrusion 1111d), or the four grooves 1211 can be distributed on the inner side of the well ring 12 at 90° intervals.

[0032] In some examples, such as Figure 1 or Figure 3 As shown, the diameter of the well cap 112 can be larger than the functional part 121. In this case, the well cap 112 can be placed on the well ring 12, thereby preventing vehicles, personnel, etc. from falling into the well.

[0033] In some examples, the manhole cover assembly 1 may further include an elastic buffer pad disposed between the manhole cap 112 and the functional portion 121. In this case, the buffer pad can reduce the impact when a vehicle or a person runs over it, thereby improving the comfort of the vehicle or the person passing through, and at the same time, it can also reduce the wear between the manhole cap 112 and the functional portion 121 of the manhole ring 12, thereby improving the service life of the manhole cover assembly 1.

[0034] In some examples, the buffer pad may be in the shape of a block evenly distributed between the well cap 112 and the functional portion 121 , or may be in the shape of a ring.

[0035] In the present invention, there is no limitation on the shape of the protrusion 1111 and the depth of the groove 1211. For example, the protrusion 1111 may be a hemisphere, a cube or other block shape, and the depth of the groove 1211 may be sufficient to accommodate at least a portion of the protrusion 1111.

[0036] In other examples, the protrusion 1111 may be disposed on the inner side of the manhole ring 12 and the groove 1211 may be disposed on the circumferential surface of the manhole cover 11 . Other contents may refer to any of the above-mentioned settings.

[0037] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A circular manhole cover assembly with a locking function, characterized in that: include: A manhole cover and a manhole ring matching the manhole cover, wherein a protrusion is formed on the circumferential surface of the manhole cover, and the manhole ring has an inner side surface opposite to the circumferential surface of the manhole cover, and a groove matching the protrusion is formed on the inner side surface of the manhole ring, and the groove includes a locking area, a transition area and an entry and exit area. When the manhole cover is buckled on the manhole ring, the protrusion enters the groove from the entry and exit area and reaches the locking area via the transition area by rotating the manhole cover. The transition area is inclined, and the high part of the transition area is close to the locking area, and the low part of the transition area is close to the entry and exit area.

2. The circular manhole cover assembly with locking function according to claim 1, characterized in that: The manhole cover comprises a locking portion formed with the protrusion and a manhole cap formed on the locking portion and having a larger diameter than the locking portion.

3. The circular manhole cover assembly with locking function according to claim 1, characterized in that: A plurality of through holes are formed in the axial direction of the manhole cover.

4. The circular manhole cover assembly with locking function according to claim 2, characterized in that: The well ring includes a functional part formed with the groove and a reinforcement part formed on the functional part and used for cooperating with the roadbed to reinforce the well ring.

5. The circular manhole cover assembly with locking function according to claim 1, characterized in that: The number of the protrusions and the number of the grooves are multiple and equal.

6. The circular manhole cover assembly with locking function according to claim 5, characterized in that: The plurality of protrusions are evenly distributed on the circumferential surface of the manhole cover, and the plurality of grooves are evenly distributed on the inner side surface of the manhole ring.

7. The circular manhole cover assembly with locking function according to claim 4, characterized in that: The diameter of the well cap is larger than that of the functional part.

8. The circular manhole cover assembly with locking function according to claim 7, characterized in that: It also includes an elastic buffer pad which is arranged between the well cap and the functional part.

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