Locking well lid

Abstract

The utility model provides a kind of locking type well lid, it is related to well lid field.The locking type well lid includes: well lid body, through-hole is provided on it;Well seat, with well lid body is adapted, and inner side wall is circumferentially provided with annular supporting member for supporting well lid body;Connecting component, well lid body is rotatably connected on well seat;And locking structure, including mounting, mounting shaft, limiting piece, first spring and poking piece, poking piece is slidably arranged in through-hole, mounting shaft is arranged in the inner side wall of poking piece, and can slide synchronously with poking piece, mounting shaft is connected with well lid body by mounting, and mounting shaft can slide or / and rotate relative to mounting, to adapt the synchronous motion of mounting shaft and poking piece, limiting piece is arranged on mounting shaft, first spring is sleeved on mounting shaft, for the elastic reset after the sliding of poking piece.The present application solves the opening restriction problem caused by the dependence of traditional key lock on key.

Description

Technical Field

[0001] This utility model relates to the field of manhole cover technology, and more specifically, to a locking manhole cover. Background Technology

[0002] The structure of a manhole cover mainly consists of three core components: the manhole cover body, the manhole seat, and the connecting components. The manhole cover body, as the direct load-bearing body, must have high strength to withstand the loads of vehicles, pedestrians, etc. The manhole seat is used to fix the position of the manhole cover and fits tightly with the edge of the manhole to form a basic connection. The connecting components connect the body and the seat, realizing the opening and closing function of the manhole cover and also ensuring the stability of the overall structure.

[0003] To prevent sewage and rainwater from backflowing when pipeline pressure is abnormal, locks are usually installed to enhance sealing. Currently, the mainstream solution is to use key locks. However, while key locks are convenient to operate, they have drawbacks such as requiring a special key to be carried and the exposed keyhole being easily clogged by mud and debris, affecting their use. Utility Model Content

[0004] The purpose of this utility model is to provide a locking manhole cover, which aims to solve the technical problems in the background art mentioned above.

[0005] The embodiments of this utility model are implemented as follows: This application provides a locking manhole cover, comprising: a manhole cover body having a through hole; a manhole seat adapted to the manhole cover body, with an annular support member circumferentially arranged on its inner sidewall for supporting the manhole cover body; a connecting member for rotatably connecting the manhole cover body to the manhole seat; and a locking structure including a mounting member, a mounting shaft, a limiting member, a first spring, and a locking member. The locking member is slidably disposed within the through hole, the mounting shaft is disposed on the inner sidewall of the locking member and can slide synchronously with the locking member, the mounting shaft is connected to the manhole cover body through the mounting member, and the mounting shaft can be locked relative to the manhole cover body. The component slides and / or rotates to accommodate the synchronous movement of the mounting shaft and the actuating component. The limiting component is disposed on the mounting shaft, and the first spring is sleeved on the mounting shaft for elastic reset of the actuating component after sliding. The actuating component includes a first position and a second position. When the actuating component is in the first position, it is located inside the through hole, and the end of the limiting component away from the mounting shaft abuts against the side of the annular support away from the manhole cover body. When the actuating component is in the second position, it is located inside the manhole cover body, and the end of the limiting component away from the mounting shaft is offset from the annular support.

[0006] Furthermore, based on the aforementioned scheme, both the through hole and the actuating element are strip-shaped.

[0007] Furthermore, based on the aforementioned scheme, the top side of the aforementioned actuating component is provided with an actuating groove.

[0008] Furthermore, based on the aforementioned solution, the aforementioned actuating groove is equipped with a protective plate that can be raised and lowered, and the inner side of the protective plate is connected to the bottom side of the aforementioned actuating groove through an elastic element. The stiffness coefficient of the elastic element is less than that of the first spring.

[0009] Furthermore, based on the aforementioned scheme, a guide plate is provided on the inner side of the protective plate, and the end of the guide plate away from the protective plate penetrates the inner wall of the actuating member and is connected to a limit strip.

[0010] Furthermore, based on the aforementioned scheme, the connecting component includes: a mounting base disposed on the well base; a rotating part rotatably disposed on the mounting base; and a connecting rod, one end of which is hinged to the rotating part and the other end of which is connected to the well cover body.

[0011] Furthermore, based on the aforementioned solution, the mounting component includes: a first mounting plate disposed on the inner side of the manhole cover body, and having an adjustable space formed by the gap distribution between the plate and the end face of the through hole; wherein the mounting shaft is disposed on the first mounting plate and is capable of sliding and / or rotating relative to the first mounting plate; a second mounting plate connecting the first mounting plate and the manhole cover body; wherein the first spring is sleeved on the mounting shaft between the first mounting plate and the actuating member.

[0012] Furthermore, based on the aforementioned scheme, a positioning post is provided on the side of the first mounting plate facing the through hole; When the aforementioned actuating element is in the aforementioned second position, the aforementioned positioning post is connected to the aforementioned actuating element.

[0013] Compared with the prior art, the embodiments of this utility model have at least the following advantages or beneficial effects: In practical use, the locking manhole cover of this application unlocks by directly operating the actuating component: pressing the actuating component allows it to slide along the through hole to the inside of the manhole cover body; then rotating the actuating component causes the mounting shaft to rotate synchronously, driving the limiting component to rotate, thus misaligning the limiting component with the annular support component of the manhole seat. At this point, the actuating component is in the second position, the limiting component is unlocked, and the manhole cover body can be flipped over via the connecting component. The actuating component can also be easily moved out from the inner space of the annular support component. The entire operation requires no additional key; unlocking is completed simply through a series of pressing, sliding, and rotating actions. The steps are direct and simple, solving the problem of opening restrictions caused by reliance on keys in traditional key locks. In the above process, because the locking function relies on the actuating component within the through hole, rather than the exposed keyhole of a traditional key lock, the structural risk of blockage by mud and debris is eliminated, avoiding the problem of locking structure failure due to blockage. This ensures that the locking and unlocking functions remain stable during long-term use, unaffected by external debris. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 An isometric view of a locking manhole cover according to an embodiment of this utility model. Figure 1 ; Figure 2 An isometric view of a locking manhole cover according to an embodiment of this utility model. Figure 2 ; Figure 3 for Figure 1 A magnified view of part A in the image; Figure 4 This is a cross-sectional view of a locking manhole cover according to an embodiment of the present utility model; Figure 5 for Figure 4 A magnified view of part B in the image; Figure 6 for Figure 4 A magnified view of part C; Figure 7 This is an isometric view of the well base according to an embodiment of the present invention; Figure 8 for Figure 7 A magnified view of part D; Figure 9 This is an isometric view of the manhole cover body according to an embodiment of the present utility model; Figure 10This is an isometric view of the locking structure according to an embodiment of the present invention; Figure 11 This is an exploded view of the locking structure according to an embodiment of the present invention; Figure 12 This is an isometric view of the mating of the actuating component and the mounting shaft in an embodiment of this utility model; Figure 13 This is an isometric view of the protective plate according to an embodiment of the present invention; Figure 14 This is an isometric view of the limiting component according to an embodiment of the present utility model; Figure 15 This is an isometric view of the rotating part in an embodiment of the present invention.

[0016] Icons: 1-Well base, 2-Well cover body, 201-Through hole, 3-Connecting component, 301-Mounting base, 302-Rotating part, 303-Connecting rod, 4-Annular support, 5-Limiting component, 6-Mounting component, 7-Mounting shaft, 8-Locking nut, 9-First spring, 10-Actuating component, 1001-Actuating groove, 11-Protective plate, 12-Positioning post, 13-Elastic component, 14-Guide plate, 15-Limiting strip, 16-Slot, 17-Insertion block. Detailed Implementation

[0017] The embodiments of this application will now be described in detail with reference to the accompanying drawings. Example

[0018] Please refer to Figures 1-15This application provides a locking manhole cover, comprising: a manhole cover body 2 with a through hole 201; a manhole seat 1 adapted to the manhole cover body 2, and having an annular support member 4 circumferentially arranged on its inner sidewall for supporting the manhole cover body 2; a connecting member 3 rotatably connecting the manhole cover body 2 to the manhole seat 1; and a locking structure including a mounting member 6, a mounting shaft 7, a limiting member 5, a first spring 9, and a toggle member 10. The toggle member 10 is slidably disposed within the through hole 201. The mounting shaft 7 is disposed on the inner sidewall of the toggle member 10 and can slide synchronously with the toggle member 10. The mounting shaft 7 is connected to the manhole cover body 2 through the mounting member 6, and the mounting shaft 7 can be relative to the upper... The mounting member 6 slides and / or rotates to accommodate the synchronous movement of the mounting shaft 7 and the actuating member 10. The limiting member 5 is disposed on the mounting shaft 7, and the first spring 9 is sleeved on the mounting shaft 7 for elastic reset after the actuating member 10 slides. The actuating member 10 includes a first position and a second position. When the actuating member 10 is in the first position, it is located inside the through hole 201, and the end of the limiting member 5 away from the mounting shaft 7 abuts against the side of the annular support member 4 away from the manhole cover body 2. When the actuating member 10 is in the second position, it is located inside the manhole cover body 2, and the end of the limiting member 5 away from the mounting shaft 7 is offset from the annular support member 4.

[0019] In actual use, the locking manhole cover of this application unlocks by directly operating the actuating component 10: pressing the actuating component 10 causes it to slide along the through hole 201 to the inside of the manhole cover body 2. Then, rotating the actuating component 10 causes the mounting shaft 7 to rotate synchronously, driving the limiting component 5 to rotate. This causes the limiting component 5 to be misaligned with the annular support component 4 of the manhole base 1. At this point, the actuating component 10 is in the second position, the limiting component 5 is unlocked, and the manhole cover body 2 can be flipped over via the connecting component 3. The actuating component 10 can also be smoothly moved out from the inner space of the annular support component 4. The entire operation does not require carrying a special key; unlocking can be completed simply by pressing, sliding, and rotating. The steps are direct and simple, solving the problem of opening restrictions caused by the reliance on keys in traditional key locks. In the above process, since the locking function relies on the actuating element 10 in the through hole 201 rather than the exposed keyhole of the traditional key lock, the structural risk of blockage by mud and debris is eliminated, avoiding the problem of locking structure failure due to blockage, and ensuring that the locking and unlocking functions remain stable in long-term use and are not affected by external debris.

[0020] It is understandable that the end of the limiting member 5 that is away from the mounting shaft 7 is offset from the annular support member 4, which means that in the vertical projection, the limiting member 5 is located inside the annular support member 4.

[0021] In a preferred embodiment, both the through hole 201 and the actuating member 10 are strip-shaped.

[0022] In the above embodiment, when the actuating member 10 is in the second position, the strip-shaped actuating member 10 is misaligned with the long side of the strip-shaped through hole 201. At this time, the actuating member 10 is located inside the manhole cover body 2, and the edge of the through hole 201 of the manhole cover body 2 will mechanically limit the actuating member 10. This limiting effect can effectively counteract the elastic restoring force of the first spring 9, thereby preventing the actuating member 10 from automatically sliding back to the first position under the action of the spring, and ensuring the stable maintenance of the unlocked state.

[0023] In a preferred embodiment, the top side of the aforementioned toggle member 10 is provided with a toggle groove 1001.

[0024] In the above embodiment, the actuating groove 1001 is provided on the top side of the actuating member 10. Its structure is adapted to external tools (such as H-shaped hooks), making it easy for tools to be inserted and force applied to drive the actuating member 10 to slide or rotate. Combining the strip-shaped through hole 201 and the actuating member 10, when in the unlocked state, the actuating member 10 and the through hole 201 are misaligned. At this time, the two ends of the H-shaped hook inserted into the actuating groove 1001 will be blocked by the edge of the through hole 201. Due to the misalignment of the strip-shaped structure, a mechanical limit is formed, which prevents the H-shaped hook from being pulled out directly.

[0025] The advantages of this design are: the toggle groove 1001 provides a clear point of force application for operation, simplifies the control of the toggle component 10, and improves the convenience of locking or unlocking operations; at the same time, the characteristic that the H-shaped hook cannot be pulled out in the unlocked state can intuitively indicate to the operator that the manhole cover is not locked, which plays an effective warning role and avoids safety risks caused by negligence that the manhole cover is not locked in time.

[0026] In a preferred embodiment, the aforementioned actuation groove 1001 is provided with a protective plate 11 that can be raised and lowered, and the inner side of the protective plate 11 is connected to the bottom side of the aforementioned actuation groove 1001 through an elastic member 13. The spring constant of the elastic element 13 is less than that of the first spring 9.

[0027] In the above embodiment, in the locked state, the elastic element 13 supports the protective plate 11 and seals the opening of the actuating groove 1001, effectively preventing debris such as mud and sand from entering and avoiding blockage of the actuating groove 1001, which would affect subsequent operations. During the unlocking operation, when an external tool is applied to the protective plate 11, the elastic element 13 will deform first because its stiffness coefficient is less than that of the first spring 9, causing the protective plate 11 to sink and allowing the external tool to enter the actuating groove 1001. When force is applied further, the force can be effectively transmitted to the actuating element 10 because the stiffness coefficient of the first spring 9 is greater, driving it to move and unlock. This ensures the anti-blocking effect in the locked state and, through the difference in stiffness coefficients between the elastic element 13 and the first spring 9, ensures that the sequence of actions of the protective plate 11 retracting and the actuating element 10 moving during the unlocking operation is reasonable, making the entire unlocking process smooth and controllable.

[0028] Optionally, the elastic element 13 is composed of two second springs, which together support the anti-slip plate, thus providing good stability.

[0029] In a preferred embodiment, a guide plate 14 is provided on the inner side of the protective plate 11, and the end of the guide plate 14 away from the protective plate 11 passes through the inner wall of the actuating member and is connected to a limit strip 15.

[0030] In the above embodiments, the guide plate 14 on the inner side of the protective plate 11 can provide stable guidance for the lifting and lowering movement of the protective plate 11, ensuring that the protective plate 11 always moves along the preset trajectory when the elastic member 13 deforms or when an external tool is applied, avoiding jamming or poor sealing caused by deviation; while the limiting strip 15 connected to the end of the guide plate 14 that penetrates the inner wall of the actuating member can abut against the inner wall of the actuating member to form a limit when the protective plate 11 is raised and reset by the elastic member 13, preventing the protective plate 11 from coming out of the actuating groove 1001 due to excessive thrust of the elastic member 13, thereby ensuring the continuous sealing capability of the protective plate 11 to the actuating groove 1001, and ensuring the relative position stability of the protective plate 11 and the actuating member 10, maintaining the reliable operation of the overall structure.

[0031] In a preferred embodiment, the connecting component 3 includes: a mounting base 301, which is disposed on the well base 1; a rotating part 302, which is rotatably disposed on the mounting base 301; and a connecting rod 303, one end of which is hinged to the rotating part 302 and the other end of which is connected to the well cover body 2.

[0032] In the above embodiment, the mounting base 301 is fixed on the well base 1 to provide basic support. The rotating part 302 can rotate around the mounting base 301. One end of the connecting rod 303 is hinged to the rotating part 302, and the other end is connected to the well cover body 2. When the well cover is opened or closed, the rotating part 302 can be driven to rotate on the mounting base 301 through the connecting rod 303. At the same time, the connecting rod 303 can be hinged to rotate relative to the rotating part 302, forming a multi-degree-of-freedom motion coordination. Its advantages are: the rotation and hinge coordination of multiple parts makes the opening and closing movement of the well cover more flexible, can adapt to different opening angle requirements, and reduce jamming or interference during the movement; the fixed connection between the mounting base 301 and the well base 1 ensures the stability of the overall structure, avoids the well cover from shaking when opening, closing or bearing load, improves the reliability of the connection, and makes the opening and closing operation of the well cover smoother and less labor-intensive.

[0033] In a preferred embodiment, the mounting component 6 includes: a first mounting plate disposed on the inner side of the manhole cover body 2, and having an adjustable space formed by the gap distribution between the mounting plate and the end face of the through hole 201; wherein the mounting shaft 7 is disposed on the first mounting plate and is capable of sliding and / or rotating relative to the first mounting plate; a second mounting plate connecting the first mounting plate and the manhole cover body 2; wherein the first spring 9 is sleeved on the mounting shaft 7 between the first mounting plate and the actuating member 10.

[0034] In the above embodiment, the adjustment space formed by the gap between the first mounting plate and the end face of the through hole 201 provides sufficient movement margin for the sliding or rotation of the mounting shaft 7, avoiding interference between the mounting shaft 7 and the manhole cover body 2 when the actuating member 10 is driven to move, and ensuring smoother mechanical movement of the locking structure; the second mounting plate connects the first mounting plate to the manhole cover body 2, which can enhance the fixing strength of the first mounting plate, prevent it from shaking or displacing when subjected to force, and ensure the stability of the overall structure; at the same time, the first spring 9 is sleeved on the mounting shaft 7 between the first mounting plate and the actuating member 10, so that the first mounting plate can serve as a stable support point for the spring, allowing the elastic restoring force of the spring to act precisely on the actuating member 10, ensuring that the actuating member 10 can reliably return to the locked position, and improving the working reliability of the locking structure.

[0035] Optionally, the mounting shaft 7 passes through the first mounting plate and is detachably fitted with the first mounting plate; the outer wall of the mounting shaft 7 below the first mounting plate is provided with external threads, and a locking nut 8 is threadedly connected to the external threads; the limiting plate is sleeved on the mounting shaft 7 and is located between the locking nut 8 and the first mounting plate; the mounting shaft 7 below the first mounting plate has a slot 16 opened along the axial direction, the slot 16 passes through the bottom of the mounting shaft 7, and the limiting member 5 is provided with a plug 17 adapted to the slot 16.

[0036] The advantages are as follows: the separable fit between the mounting shaft 7 and the first mounting plate facilitates the disassembly and maintenance of the overall locking structure; the locking nut 8, through threaded fastening, can stably clamp the limiting plate between the first mounting plate and the locking nut 8, ensuring the fixed position of the limiting plate and preventing it from shifting when the mounting shaft 7 moves; the adaptable design of the slot 16 and the insert 17 allows the limiting component 5 to be quickly assembled or separated from the mounting shaft 7, facilitating the replacement of different specifications of the limiting component 5 according to actual needs, improving the versatility and maintenance convenience of the structure; at the same time, the detachable connection of each component reduces the replacement cost when a single component is damaged, extending the service life of the overall structure.

[0037] In a preferred embodiment, a positioning post 12 is provided on the side of the first mounting plate facing the through hole 201; When the actuating member 10 is in the second position, the positioning post 12 is connected to the actuating member 10.

[0038] In the above embodiment, when the toggle member 10 is in the second position, the positioning post 12 is connected to the toggle member 10, which can directly limit the rotation range of the toggle member 10 through physical obstruction. During the unlocking operation, as the toggle member 10 rotates with the mounting shaft 7 to the second position, the positioning post 12 will form a rigid limit, preventing the toggle member 10 from continuing to rotate, thereby avoiding it from exceeding the preset stroke due to excessive rotation angle.

[0039] Furthermore, unless otherwise explicitly specified or limited, the terms "installation" and "connection" in this application embodiment should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "upper," "lower," "left," "right," "inner," "outer," and "side," etc., are merely for reference to the direction in the accompanying drawings or the usual placement of the product during use. They are only for clearly describing this application and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limitations on this application. The terms "first," "second," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance; "multiple" refers to at least two. In this application embodiment, the limitations on relative positional relationships such as parallel, perpendicular, and aligned are all relative to the current technological level and are not absolutely strict limitations. Slight deviations are allowed; approximations of parallel, perpendicular, and aligned are all acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees.

[0040] The above are only some embodiments and implementation methods of this application. The protection scope of this application is not limited thereto. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. Any combination of features in different embodiments is also within the protection scope of this application. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application.

Claims

1. A locking manhole cover, characterized in that, include: The manhole cover body (2) has a through hole (201) on it; The well base (1) is adapted to the well cover body (2), and the inner side wall is provided with an annular support (4) for supporting the well cover body (2); The connecting component (3) rotatably connects the manhole cover body (2) to the manhole base (1); as well as The locking structure includes a mounting component (6), a mounting shaft (7), a limiting component (5), a first spring (9), and a toggle component (10). The toggle component (10) is slidably disposed in the through hole (201). The mounting shaft (7) is disposed on the inner side wall of the toggle component (10) and can slide synchronously with the toggle component (10). The mounting shaft (7) is connected to the manhole cover body (2) through the mounting component (6), and the mounting shaft (7) can slide or / and rotate relative to the mounting component (6) to accommodate the synchronous movement of the mounting shaft (7) and the toggle component (10). The limiting component (5) is disposed on the mounting shaft (7), and the first spring (9) is sleeved on the mounting shaft (7) for elastic reset after the toggle component (10) slides. The actuating member (10) includes a first position and a second position. When the actuating member (10) is in the first position, it is located inside the through hole (201), and the end of the limiting member (5) away from the mounting shaft (7) abuts against the side of the annular support member (4) away from the manhole cover body (2). When the actuating member (10) is in the second position, it is located inside the manhole cover body (2), and the end of the limiting member (5) away from the mounting shaft (7) is staggered from the annular support member (4).

2. A locking manhole cover according to claim 1, characterized in that, Both the through hole (201) and the actuating element (10) are strip-shaped.

3. A locking manhole cover according to claim 1, characterized in that, The top side of the actuating member (10) is provided with an actuating groove (1001).

4. A locking manhole cover according to claim 3, characterized in that, The actuating groove (1001) is equipped with a protective plate (11) that can be raised and lowered. The inner side of the protective plate (11) is connected to the bottom side of the actuating groove (1001) through an elastic element (13). The spring constant of the elastic element (13) is less than that of the spring constant of the first spring (9).

5. A locking manhole cover according to claim 4, characterized in that, A guide plate (14) is provided on the inner side of the protective plate (11). One end of the guide plate (14) away from the protective plate (11) passes through the inner wall of the actuating member (10) and is connected to a limit strip (15).

6. A locking manhole cover according to claim 1, characterized in that, The connecting component (3) includes: Mounting base (301) is disposed on the well base (1); The rotating part (302) is rotatably mounted on the mounting base (301); The connecting rod (303) is hinged at one end to the rotating part (302) and connected at the other end to the manhole cover body (2).

7. A locking manhole cover according to claim 1, characterized in that, The mounting component (6) includes: The first mounting plate is disposed on the inner side of the manhole cover body (2) and has an adjustable space between it and the end face of the through hole (201). The mounting shaft (7) is disposed on the first mounting plate and is capable of sliding and / or rotating relative to the first mounting plate; The second mounting plate connects the first mounting plate and the manhole cover body (2); The first spring (9) is sleeved on the mounting shaft (7) between the first mounting plate and the actuating member (10).

8. A locking manhole cover according to claim 7, characterized in that, A positioning post (12) is provided on the side of the first mounting plate facing the through hole (201); When the actuating member (10) is in the second position, the positioning post (12) is connected to the actuating member (10).

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