Nodular cast iron anti-theft well lid

Abstract

The utility model provides a nodular cast iron anti-theft well lid and belongs to the technical field of well lids. Comprising a well base and a well lid, a limiting ring is arranged in the well lid, two limiting holes are oppositely formed in the well lid, two sets of limiting mechanisms for limiting the two limiting holes are arranged in the well lid, the limiting mechanisms are oppositely arranged in the well lid, a groove is formed in the top of the well lid in a penetrating mode, and the limiting holes are arranged in the groove. And two groups of pulling mechanisms for simultaneously driving the two groups of limiting mechanisms to limit the limiting holes are arranged in the groove, and are respectively connected with the two groups of limiting mechanisms. The limiting mechanism and the pulling mechanism are arranged, the limiting mechanism is driven by the pulling mechanism to achieve limiting of the limiting holes, the overall installation steps are simple and efficient, control over the limiting mechanism can be achieved in the well lid carrying process, and therefore the well lid can be rapidly installed conveniently, and the overall installation efficiency is improved.

Description

Technical Field

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

[0002] Ductile iron manhole covers are a type of cover used to cover the entrances of facilities such as sewers and cable inspection ports. Ductile iron is a commonly used material for manhole covers. It is widely used in municipal facilities because of its toughness and corrosion resistance. Ductile iron manhole covers can be divided into round and square shapes, of which the round shape is more common because it is not easy to tilt and is safer. However, existing ductile iron manhole covers are prone to accidents where the manhole covers fall off, resulting in a reduction in overall safety and stability.

[0003] In order to address the above problems, the existing Chinese patent with announcement number CN218757619U proposes an anti-theft ductile iron manhole cover. The device drives multiple bevel gears to rotate through a first rotating shaft, so that the slider drives the fixing rod to limit the installation groove, so that the manhole cover can be better fixed on the manhole seat, avoiding the situation in which the manhole cover falls off due to insufficient fixation during actual use, thereby causing safety accidents, thereby improving the safety and stability of the device.

[0004] However, although the above-mentioned anti-theft ductile iron manhole cover can limit the installation groove by a fixing rod, the steps of adjusting the slider to drive the fixing rod to limit the installation groove of the anti-theft ductile iron manhole cover are too complicated, resulting in a problem of reduced installation efficiency of the manhole cover. Therefore, the utility model provides a folding bed that is easy to store to meet the needs. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a ductile iron anti-theft manhole cover to solve the problem that the steps of the existing ductile iron manhole cover are too complicated when adjusting the slider to drive the fixing rod to limit the installation groove, thereby reducing the installation efficiency of the manhole cover.

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

[0007] A ductile iron anti-theft manhole cover comprises a manhole seat and a manhole cover, wherein a limiting ring is arranged inside the manhole cover, and two limiting holes are arranged opposite to each other inside the manhole cover, and a limiting mechanism for limiting the two limiting holes is arranged inside the manhole cover, and the limiting mechanism consists of two groups and is arranged opposite to each other inside the manhole cover, and a groove is penetrated through the top of the manhole cover, and a pulling mechanism for simultaneously driving the two groups of the limiting mechanisms to limit the limiting holes is arranged in the groove, and the pulling mechanism consists of two groups and is respectively connected to the two groups of the limiting mechanisms.

[0008] Optionally, the limiting mechanism includes:

[0009] A movable plate, which is movably arranged in the manhole cover, and a movable groove in which the movable plate can move is provided in the manhole cover. A limiting rod is fixedly connected to the movable plate, and the limiting rod is movably arranged in the manhole cover, and the limiting rod is configured to limit the limiting hole; a movable rod is fixedly connected to one end of the movable plate away from the limiting rod, and the movable rod is movably connected to the manhole cover; a spring is sleeved on the movable rod and is located in the movable groove.

[0010] Optionally, the two groups of pulling mechanisms are arranged relative to each other, and the two groups of pulling mechanisms are suitable for pulling the movable rods of the two groups of limiting mechanisms to move relative to each other. The pulling mechanism includes: a handle, which is rotatably arranged on the manhole cover in the groove through a rotating shaft, and the bottom of the handle is fixedly connected to a connecting block; a connecting rod, whose two ends are respectively hinged to the connecting block and the movable rod.

[0011] Optionally, a movable groove for the connection rod and the movable rod to move is opened in the manhole cover, the movable groove and the groove are connected, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixedly connected to the handle and the manhole cover.

[0012] Optionally, it also includes a sealing cover, which is detachably arranged on the top of the groove, and the manhole cover is provided with a slot for clamping the sealing cover, and the slot and the groove are connected.

[0013] Optionally, the diameter of the slot is larger than the diameter of the groove.

[0014] Optionally, the sealing cover is provided with a plurality of anti-theft screws.

[0015] Optionally, a sealing gasket is fixedly connected between the sealing cover and the card slot.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects:

[0017] In the above scheme, a limiting mechanism and a pulling mechanism are set, and the pulling mechanism drives the limiting mechanism to limit the limiting hole. The overall installation steps are simple and efficient. During the process of transporting the manhole cover, the limiting mechanism can be controlled, thereby facilitating the rapid installation of the manhole cover and improving the overall installation efficiency.

[0018] By providing the torsion spring, the handle can be quickly reset and stored easily.

[0019] By providing a sealing cover and anti-theft screws, the sealing cover is installed on the card slot through the anti-theft screws to prevent strangers from opening the sealing cover, thereby facilitating the anti-theft effect of the manhole cover. At the same time, the sealing gasket can prevent external impurities or moisture from entering the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of a ductile iron anti-theft manhole cover;

[0022] Figure 2 The figure is a schematic diagram of the three-dimensional structure of the well seat;

[0023] Figure 3 This is an exploded view of a ductile iron anti-theft manhole cover;

[0024] Figure 4 It is a structural schematic diagram of the limiting mechanism and the pulling mechanism;

[0025] Figure 5 It is a schematic diagram of the structure of the handle and the torsion spring;

[0026] Figure 6 for Figure 5 Top view of the .

[0027] [reference numerals]

[0028] 1. Well seat; 2. Well cover; 3. Sealing cover; 4. Anti-theft screw; 5. Limiting hole; 6. Limiting ring; 7. Sealing pad; 8. Pulling mechanism; 81. Handle; 82. Rotating shaft; 83. Connecting block; 84. Connecting rod; 9. Limiting mechanism; 91. Movable rod; 92. Spring; 93. Movable groove; 94. Movable plate; 95. Limiting rod; 10. Groove; 11. Card slot; 12. Moving slot; 13. Torsion spring.

[0029] 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

[0030] The following is a detailed description of a ductile iron anti-theft 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.

[0031] 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).

[0032] 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.

[0033] 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.

[0034] 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.

[0035] like Figures 1 to 6As shown, an embodiment of the utility model provides a ductile iron anti-theft manhole cover, including a manhole seat 1 and a manhole cover 2, a limiting ring 6 is provided in the manhole cover 2, two limiting holes 5 are relatively provided in the manhole cover 2, a limiting mechanism 9 for limiting the two limiting holes 5 is provided inside the manhole cover 2, the limiting mechanism 9 is divided into two groups and relatively arranged in the manhole cover 2, a groove 10 is penetrated through the top of the manhole cover 2, a pulling mechanism 8 for simultaneously driving the two groups of the limiting mechanisms 9 to limit the limiting holes 5 is provided in the groove 10, the pulling mechanism 8 is divided into two groups, and is respectively connected to the two groups of the limiting mechanisms 9.

[0036] Specifically, by pulling the mechanism 8 to drive the limiting mechanism 9 to move and realize the limiting of the limiting hole 5, the overall installation steps are simple and efficient. In the process of moving the manhole cover 2, the limiting mechanism 9 can be controlled, thereby facilitating the rapid installation of the manhole cover 2, thereby improving the overall installation efficiency, and solving the problem that the existing ductile iron manhole cover has too complicated steps when adjusting the slider to drive the fixing rod to limit the installation groove, thereby reducing the installation efficiency of the manhole cover.

[0037] It should be noted that a plurality of drainage holes are provided through the manhole cover 2 for drainage, and these drainage holes are staggered with the pulling mechanism 8 and the limiting mechanism 9. Secondly, the setting of the drainage holes is prior art and will not be described in detail in this embodiment.

[0038] like Figures 3 to 6 As shown, the limiting mechanism 9 includes a movable plate 94, which is movably arranged in the manhole cover 2, and a movable groove 93 is provided in the manhole cover 2 for the movable plate 94 to move. A limiting rod 95 is fixedly connected to the movable plate 94, and the limiting rod 95 is movably arranged in the manhole cover 2. The limiting rod 95 is configured to limit the limiting hole 5, a movable rod 91, which is fixedly connected to one end of the movable plate 94 away from the limiting rod 95, and the movable rod 91 is movably connected to the manhole cover 2, and a spring 92 is sleeved on the movable rod 91 and located in the movable groove 93.

[0039] like Figures 4 to 6As shown, the two groups of pulling mechanisms 8 are arranged relatively to each other, and the two groups of pulling mechanisms 8 are suitable for pulling the movable rods 91 of the two groups of limiting mechanisms 9 to move relatively, and the pulling mechanism 8 includes a handle 81, which is rotatably arranged on the manhole cover 2 in the groove 10 through a rotating shaft 82, and the bottom of the handle 81 is fixedly connected with a connecting block 83 and a connecting rod 84, and its two ends are respectively hinged to the connecting block 83 and the movable rod 91, and a movable groove 12 for the movable connecting rod 84 and the movable rod 91 is opened in the manhole cover 2, and the movable groove 12 is provided. 2 is connected to the groove 10, a torsion spring 14 is sleeved on the rotating shaft 82, and the two ends of the torsion spring 14 are respectively fixedly connected to the handle 81 and the manhole cover 2. Specifically, the setting of the torsion spring 14 facilitates the rapid reset of the handle 81 and the storage of the handle 81. At the same time, in this embodiment, the connecting blocks 83 of the two groups of pulling mechanisms 8 are staggered, and the two connecting rods 84 are relatively cross-arranged, so that when the two handles 81 are relatively gathered together, the handle 81 drives the corresponding connecting rod 84 to pull the movable rod 91 to move toward the moving groove 12.

[0040] like Figure 3 , Figure 5 and Figure 6 As shown, it also includes a sealing cover 3, which is detachably arranged on the top of the groove 10, and the manhole cover 2 is provided with a slot 11 for clamping the sealing cover 3, and the slot 11 and the groove 10 are connected. The diameter of the slot 11 is larger than the diameter of the groove 10, and a plurality of anti-theft screws 4 are provided on the sealing cover 3. A sealing gasket 7 is fixedly connected between the sealing cover 3 and the slot 11. Specifically, the sealing cover 3 is installed on the slot 11 by the anti-theft screws 4 to prevent strangers from opening the sealing cover 3, thereby facilitating the anti-theft effect of the manhole cover 2. At the same time, the sealing gasket 7 can prevent external impurities or moisture from being discharged into the groove 10, so as to protect the internal limiting mechanism 9 and pulling mechanism 8.

[0041] The working principle provided by the utility model is that when the manhole cover 2 is installed in the manhole seat 1, the two handles 81 are pulled by hand so that the two handles 81 rotate relatively close to each other along the rotating shaft 82, so that the handles 81 drive the connecting block 83 to rotate, and the connecting block 83 drives the connecting rod 84 to move, so that the connecting rod 84 pulls the movable rod 91 to move, and the movable rod 91 drives the movable plate 94 and the limiting rod 95 to move in the direction away from the limiting hole 5. At this time, the limiting rod 95 retracts into the inside of the manhole cover 2. At this time, the manhole cover 2 is moved to the through hole of the manhole seat 1 through the handle 81, and the manhole cover 2 is placed on the limiting ring 6, and at the same time, the limiting The rod 95 is directly opposite to the limiting hole 5, and the handle 81 can be released at this time. The handle 81 is reset under the action of the torsion spring 14 and the spring 92, and the movable plate 94 and the movable rod 91 are reset at the same time, so that the limiting rod 95 limits the limiting hole 5 again. The overall installation steps are simple and efficient. In the process of carrying the manhole cover 2, the limiting mechanism 9 can be controlled, thereby facilitating the rapid installation of the manhole cover 2, improving the overall installation efficiency, and solving the problem that the existing ductile iron manhole cover has too complicated steps when adjusting the slider to drive the fixed rod to limit the installation groove, thereby reducing the installation efficiency of the manhole cover.

[0042] 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.

[0043] 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 ductile iron anti-theft manhole cover, comprising a manhole seat and a manhole cover, characterized in that: A limiting ring is provided inside the manhole cover, two limiting holes are provided opposite to each other inside the manhole cover, a limiting mechanism for limiting the two limiting holes is provided inside the manhole cover, and the limiting mechanism is in two groups and is arranged opposite to each other inside the manhole cover; A groove is provided through the top of the manhole cover, and a pulling mechanism is provided in the groove for simultaneously driving two groups of the limiting mechanisms to limit the limiting holes. The pulling mechanism is in two groups, and is respectively connected to the two groups of the limiting mechanisms.

2. The ductile iron anti-theft manhole cover according to claim 1 is characterized in that: The limiting mechanism comprises: A movable plate is movably arranged in the manhole cover, a movable groove is provided in the manhole cover for the movable plate to move, a limiting rod is fixedly connected to the movable plate, the limiting rod is movably arranged in the manhole cover, and the limiting rod is configured to limit the limiting hole; A movable rod, which is fixedly connected to one end of the movable plate away from the limiting rod, and the movable rod is movably connected to the manhole cover; A spring is sleeved on the movable rod and located in the movable groove.

3. The ductile iron anti-theft manhole cover according to claim 2 is characterized in that: The two groups of pulling mechanisms are arranged opposite to each other, and the two groups of pulling mechanisms are suitable for pulling the movable rods of the two groups of limiting mechanisms to move relative to each other, and the pulling mechanisms include: A handle, which is rotatably arranged on the manhole cover in the groove through a rotating shaft, and a connecting block is fixedly connected to the bottom of the handle; The connecting rod has two ends which are respectively hinged to the connecting block and the movable rod.

4. The ductile iron anti-theft manhole cover according to claim 3 is characterized in that: A movable groove for the connection rod and the movable rod to move is provided in the manhole cover, the movable groove and the groove are connected, a torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are fixedly connected to the handle and the manhole cover respectively.

5. The ductile iron anti-theft manhole cover according to claim 1 is characterized in that: It also includes a sealing cover which is detachably arranged on the top of the groove. The well cover is provided with a slot for clamping the sealing cover, and the slot is connected to the groove.

6. The ductile iron anti-theft manhole cover according to claim 5 is characterized in that: The diameter of the clamping slot is greater than the diameter of the groove.

7. The ductile iron anti-theft manhole cover according to claim 5 is characterized in that: The sealing cover is provided with a plurality of anti-theft screws.

8. The ductile iron anti-theft manhole cover according to claim 5 is characterized in that: A sealing gasket is fixedly connected between the sealing cover and the clamping slot.

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