Multipurpose nodular cast iron well lid

Abstract

The utility model provides a multipurpose nodular cast iron well lid, and belongs to the technical field of well lids. Comprising a cover body which is arranged in a hollow column shape; the cover plate is rotationally connected to the upper part of the surface of the cover body through a hinge seat and is sealed with the cover body; the lower end face, located in the cover body, of the cover plate is provided with an expansion mechanism, and the expansion mechanism is configured to move outwards in the horizontal direction and make contact with the inner side of the cover body when the cover plate bears downward pressure in the vertical direction. The expansion mechanism, the reset mechanism and the guide mechanism are matched, when the well lid generates downward pressure due to external factors, the pressure acts on the guide mechanism, so that the guide mechanism can transmit the vertically downward pressure to the position of the expansion mechanism, and the well lid is expanded. Therefore, the expansion piece in the expansion mechanism can abut against the cover body, the well lid can be stabilized, the connection strength between the cover plate and the cover body is improved, the well lid is prevented from being loosened under external factors, and stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a multi-purpose ductile iron manhole cover. Background Art

[0002] Ductile iron manhole cover is a kind of ductile iron product. Ductile iron is obtained by spheroidizing and inoculating to obtain spheroidal graphite, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, thereby obtaining higher strength than carbon steel. Manhole cover is a device used to cover underground wellheads or pipe openings. It is mainly used for safety protection, drainage systems, providing access channels and marking buried facilities.

[0003] Referring to the existing patent publication number: CN211773922U, a multi-purpose ductile iron manhole cover is composed of a cover body and an upper cover, and two outer hinge seats are arranged on the upper cover; two inner spring seats are arranged on the cover body, and a spring is arranged between the two inner spring seats, and the hinge shaft passes through the two inner spring seats and the middle spring, and the two ends are respectively inserted into the two outer hinge seats adjacent to the outer sides of the two inner spring seats, so that a one-way spring hinge connection is formed between the cover body and the upper cover; a latch tongue groove is arranged on the inner side of the cover body, and a latch and a keyhole are arranged at the corresponding position of the upper cover. After the latch and the latch tongue groove are stuck, the upper cover and the cover body are locked, which is convenient to use, saves time, effectively controls human theft and loss, is safe and reliable, and improves economic benefits.

[0004] However, in actual use, since the existing manhole covers are used to seal and protect the drainage system or related passages on the road, vehicles or pedestrians passing on the road may easily cause a certain amount of pressure on the manhole cover or cause vibration to the manhole cover, which may cause the manhole cover to move or even become loose when affected by external factors for a long time, resulting in poor stability of the manhole cover, thereby affecting the use of the manhole cover. Therefore, the present application provides a multi-purpose ductile iron manhole cover that can effectively improve the stability of its connection to meet the needs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a multi-purpose ductile iron manhole cover to solve the problem that the existing manhole cover is affected by external factors for a long time and becomes movable or even loose, which affects the normal use.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A multi-purpose ductile iron manhole cover, comprising:

[0008] The cover body is arranged in a hollow columnar shape;

[0009] A cover plate, which is rotatably connected to the upper surface of the cover body through a hinge seat and is sealed with the cover body;

[0010] The lower end surface of the cover plate located in the cover body is configured with an expansion mechanism, and the expansion mechanism is configured to move outward in a horizontal direction and contact the inner side of the cover body when the cover plate is subjected to a downward pressure in a vertical direction.

[0011] Optionally, the expansion mechanism comprises: a sleeve, an expansion piece, a conducting part and a bumping bead;

[0012] The sleeves are all installed at the lower end surface of the cover plate, and the sleeves are arranged in a ring shape along the axis of the cover plate. The conducting parts are all movably installed in the sleeve in the horizontal direction. The extension part is installed at one end of the conducting part away from the axis of the cover plate, and the bead is installed at one end of the conducting part close to the axis of the cover plate. A reset mechanism is installed inside the sleeve.

[0013] Optionally, the reset mechanism comprises: a movable part, a fixed part and an elastic member;

[0014] The fixed parts are all installed inside the sleeve, the movable parts are all installed on the surface of the conductive part, the elastic parts are all installed between the fixed parts and the movable parts, and the conductive parts penetrate the fixed parts, and a guiding mechanism is installed inside the cover plate.

[0015] Optionally, the guiding mechanism comprises: a movable plate and a guiding portion;

[0016] The movable plate is movably mounted on the upper end surface of the cover plate in a vertical direction, and the guide portion is mounted at the end surface position of the movable plate located inside the cover plate and penetrates the cover plate.

[0017] Optionally, the guide portion is coaxially arranged with the cover plate, and one end of the guide portion away from the movable plate is spherically arranged and contacts with the bumper.

[0018] Optionally, the surface portion of the movable plate outside the cover plate is provided with anti-slip grooves.

[0019] Optionally, the cover body is internally structured with a limiting portion arranged in a stepped manner and in contact with the cover plate, and a sealing gasket is arranged on the upper portion of the limiting portion.

[0020] Optionally, a fixed base coaxially arranged with the cover body is installed on the outer side of the surface of the cover body, and a pry hole is configured on the surface of the cover plate.

[0021] Compared with the prior art, the utility model has at least the following beneficial effects:

[0022] In the above scheme, by setting up an expansion mechanism, a reset mechanism and a guide mechanism to cooperate with each other, when the manhole cover is subjected to downward pressure due to external factors, the pressure will act on the guide mechanism, so that the guide mechanism can transmit the vertical downward pressure to the position of the expansion mechanism, so that the expansion member in the expansion mechanism can be against the cover body, so that the manhole cover can be stable, thereby improving the connection strength between the cover plate and the cover body, avoiding the manhole cover from loosening due to external factors, and improving stability. Then, after the external pressure disappears, the expansion mechanism and the guide mechanism can be restored to their initial positions under the action of the reset mechanism.

[0023] By setting a limiting part and a sealing gasket to cooperate with each other, a limiting part for positioning and cooperating the cover plate is set inside the cover body, so that the cover plate can always be maintained at the same horizontal position as the cover body when the manhole cover is subjected to external pressure, thereby avoiding the manhole cover from sinking, and a sealing gasket is constructed between the cover plate and the cover body to improve the sealing of the manhole cover and avoid external impurities and the like from affecting the internal environment of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the present invention and, together with the description, further serve to explain the principles of the present invention and enable those skilled in the relevant art to make and use the present invention.

[0025] Figure 1 This is a schematic diagram of the overall structure of the manhole cover of the utility model;

[0026] Figure 2 This is a schematic diagram of the expanded structure of the manhole cover of the utility model;

[0027] Figure 3 This is a schematic diagram of the top-sectional structure of the cover plate of the utility model;

[0028] Figure 4 This is a schematic diagram of the front cross-section structure of the cover plate of the utility model;

[0029] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0030] [reference numerals]

[0031] 1. Cover body; 2. Cover plate; 3. Articulated seat; 4. Movable plate; 5. Fixed base; 6. Sleeve; 7. Extension piece; 8. Sealing pad; 9. Limiting part; 10. Guide part; 11. Bumper; 12. Conducting part; 13. Elastic part; 14. Fixed part; 15. Movable part.

[0032] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0033] The following is a detailed description of a multi-purpose ductile iron manhole cover provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0034] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0035] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0036] It is to be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0037] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0038] like Figure 1 As shown, an embodiment of the utility model provides a multi-purpose ductile iron manhole cover, comprising: a cover body 1, the interior of which is in a hollow columnar shape; a cover plate 2, which is rotatably connected to the upper surface of the cover body 1 through a hinge seat 3 and is sealed with the cover body 1, and the cover plate 2 cooperates with the cover body 1 to form a manhole cover, and the cover plate 2 can rotate around the hinge seat 3 to facilitate the opening or closing of the manhole cover; the lower end surface of the cover plate 2 located in the cover body 1 is constructed with an expansion mechanism, and the expansion mechanism is configured to be able to move outward in a horizontal direction and contact with the inner side of the cover body 1 when the cover plate 2 is subjected to downward pressure in the vertical direction, and the connection between the cover plate 2 and the cover body 1 can be strengthened through the movably arranged expansion mechanism, so as to reduce the impact of the movement on the manhole cover and improve the stability.

[0039] like Figures 2 to 4 As shown, the expansion mechanism includes: a sleeve 6, an extension piece 7, a conducting part 12 and a bumping ball 11; the sleeve 6 is installed at the lower end surface of the cover plate 2, and the sleeve 6 is arranged in a ring shape along the axis of the cover plate 2, the conducting part 12 is movably installed inside the sleeve 6 along the horizontal direction, the extension piece 7 is installed at the end of the conducting part 12 away from the axis of the cover plate 2, the bumping ball 11 is installed at the end of the conducting part 12 close to the axis of the cover plate 2, and a reset mechanism is installed inside the sleeve 6. Through this design, the expansion mechanism can be reset through the sleeve 6. Support installation, in addition, the sleeve 6 can be other components that can be movably supported by the expansion mechanism. At this time, the conductive part 12 can be horizontally connected to the sleeve 6 inside the sleeve 6, so as to facilitate the movement of the conductive part 12, and the two ends of the conductive part 12 are respectively provided with an extension piece 7 and a bumper 11. When the bumper 11 is subjected to external force, the force can be transmitted to the position of the extension piece 7 to drive the extension piece 7 to move. The extension piece 7 can be against the cover body to make the manhole cover stable, thereby improving the connection strength between the cover plate 2 and the cover body 1.

[0040] like Figure 3 and Figure 5As shown, the reset mechanism includes: a movable part 15, a fixed part 14 and an elastic member 13; the fixed parts 14 are installed inside the sleeve 6, the movable parts 15 are installed on the surface of the conductive part 12, the elastic members 13 are installed between the fixed parts 14 and the movable parts 15, and the conductive part 12 is arranged to penetrate the fixed part 14, and a guide mechanism is installed inside the cover plate 2. Through this embodiment, when the expansion mechanism is subjected to external force, the conductive part 12 can drive the movable part 15 to move together, so that the movable part 15 compresses the elastic member 13, so that after the external force disappears, the elastic member 13 in the reset mechanism can restore its elasticity to push the expansion mechanism to reset, thereby improving flexibility and facilitating the response to subsequent frequent external forces.

[0041] like Figure 1 and Figure 4 As shown, the guiding mechanism includes: a movable plate 4 and a guiding portion 10; the movable plate 4 is movably installed on the upper end surface of the cover plate 2 in the vertical direction, and the guiding portion 10 is installed at the end surface position of the movable plate 4 located inside the cover plate 2 and passes through the cover plate 2. Through this embodiment, when the manhole cover is subjected to downward pressure due to external factors, the pressure will act on the position of the movable plate 4, so that the movable plate 4 can drive the guiding portion 10 to move downward, and the guiding mechanism can transmit the vertical downward pressure to the position of the expansion mechanism.

[0042] like Figures 3 to 4 As shown, the guide portion 10 is coaxially arranged with the cover plate 2, and the end of the guide portion 10 away from the movable plate 4 is spherically arranged and contacts the bumping ball 11. Through this design, the guide portion 10 can move relatively stably in the cover plate 2 to better transmit the external pressure, thereby avoiding deviation. Since the contact surfaces of the guide portion 10 and the bumping ball 11 are both smooth curved surfaces, the bumping ball 11 can be pushed during the vertical downward movement of the guide portion 10, which facilitates the transmission of force.

[0043] like Figure 1 As shown, the surface portion of the movable plate 4 located outside the cover plate 2 is provided with anti-slip grooves. Through this design, the friction between the manhole cover and the external contact surface can be effectively improved under the action of the anti-slip grooves, thereby avoiding slipping, improving stability, and reducing safety accidents caused by sliding.

[0044] like Figure 2 As shown, the internal structure of the cover body 1 is provided with a limiting portion 9 which is arranged in a stepped manner and contacts the cover plate 2, and a sealing gasket 8 is provided on the upper portion of the limiting portion 9. Through this design, the cover plate 2 can always be maintained at the same horizontal position with the cover body 1 when the manhole cover is subjected to external pressure, thereby avoiding the manhole cover from being dented, and a sealing gasket 8 is constructed between the cover plate 2 and the cover body 1 to improve the sealing performance of the manhole cover and avoid the influence of external impurities on the internal environment of the manhole cover.

[0045] like Figures 1 to 2 As shown, a fixed base 5 coaxially arranged with the cover body 1 is installed on the outer side of the surface of the cover body 1, and a pry hole is constructed on the surface of the cover plate 2. Through this design, the manhole cover can be connected and installed through the fixed base 5, providing a basis for the installation of the manhole cover, and when the cover plate 2 is opened, personnel can apply force through the pry hole to facilitate the opening and closing operation of the manhole cover.

[0046] The working principle provided by the utility model is that when the manhole cover is subjected to downward pressure caused by external factors, the pressure will act on the position of the movable plate 4, so that the movable plate 4 can drive the guide part 10 to move downward, and the guide mechanism can transmit the vertical downward pressure to the position of the expansion mechanism. At this time, the guide part 10 will push the bumper 11 to move horizontally, and the bumper 11 will transmit the force to the position of the expansion member 7 through the transmission part 12, so that the expansion member 7 in the expansion mechanism can be offset against the cover body, so that the manhole cover can be stable, thereby improving the connection strength between the cover plate 2 and the cover body 1, avoiding the manhole cover from loosening due to external factors, and improving Stability, and then after the external pressure disappears, the expansion mechanism and the guiding mechanism can be restored to the initial position under the action of the reset mechanism, and the elastic member 13 can push the movable part 15 and the conductive part 12 to reset, so that the movable plate 4 is restored to a horizontal position with the cover plate 2, and a limiting part 9 for positioning the cover plate 2 is provided inside the cover body 1, so that the cover plate 2 can always be kept at the same horizontal position with the cover body 1 when the manhole cover is subjected to external pressure, thereby avoiding the manhole cover from sinking, and a sealing gasket 8 is constructed between the cover plate 2 and the cover body 1 to improve the sealing of the manhole cover and avoid external impurities from affecting the internal environment of the manhole cover.

[0047] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-purpose ductile iron manhole cover, characterized in that: include: The cover body is arranged in a hollow columnar shape; A cover plate, which is rotatably connected to the upper surface of the cover body through a hinge seat and is sealed with the cover body; The lower end surface of the cover plate located in the cover body is configured with an expansion mechanism, and the expansion mechanism is configured to move outward in a horizontal direction and contact the inner side of the cover body when the cover plate is subjected to a downward pressure in a vertical direction.

2. The multi-purpose ductile iron manhole cover according to claim 1 is characterized in that: The expansion mechanism comprises: a sleeve, an expansion piece, a conducting part and a bumping bead; The sleeves are all installed at the lower end surface of the cover plate, and the sleeves are arranged in a ring shape along the axis of the cover plate. The conducting parts are all movably installed in the sleeve in the horizontal direction. The extension part is installed at one end of the conducting part away from the axis of the cover plate, and the bead is installed at one end of the conducting part close to the axis of the cover plate. A reset mechanism is installed inside the sleeve.

3. The multi-purpose ductile iron manhole cover according to claim 2 is characterized in that: The reset mechanism comprises: a movable part, a fixed part and an elastic member; The fixed parts are all installed inside the sleeve, the movable parts are all installed on the surface of the conductive part, the elastic parts are all installed between the fixed parts and the movable parts, and the conductive parts penetrate the fixed parts, and a guiding mechanism is installed inside the cover plate.

4. The multi-purpose ductile iron manhole cover according to claim 3 is characterized in that: The guiding mechanism comprises: a movable plate and a guiding part; The movable plate is movably mounted on the upper end surface of the cover plate in a vertical direction, and the guide portion is mounted at the end surface position of the movable plate located inside the cover plate and penetrates the cover plate.

5. The multi-purpose ductile iron manhole cover according to claim 4, characterized in that: The guide part is coaxially arranged with the cover plate, and one end of the guide part away from the movable plate is spherically arranged and contacts with the bumping ball.

6. The multi-purpose ductile iron manhole cover according to claim 4, characterized in that: The surface portion of the movable plate outside the cover plate is provided with anti-slip grooves.

7. The multi-purpose ductile iron manhole cover according to claim 1, characterized in that: The cover body is internally structured with a limiting portion arranged in a stepped manner and in contact with the cover plate, and a sealing gasket is arranged on the upper portion of the limiting portion.

8. The multi-purpose ductile iron manhole cover according to claim 1, characterized in that: A fixed base coaxially arranged with the cover body is installed on the outer side of the surface of the cover body, and a pry hole is configured on the surface of the cover plate.

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