Anti-loosening mechanism for cast iron well lid

Abstract

The utility model discloses a cast iron well lid anti-loosening mechanism which comprises a well way and a limiting table, a cast iron well lid is arranged at the top of the well way, limiting blocks are evenly connected to the upper end of the periphery of the cast iron well lid, a sealing ring is arranged at the lower end of the periphery of the cast iron well lid in a sleeved mode, and a well lid bottom plate is arranged at the bottom of the cast iron well lid. And positioning bolts are connected to the periphery of the bottom of the well lid bottom plate. The novel cast iron well lid anti-loosening mechanism has the function of enhancing the stability of the cast iron well lid through the limiting blocks, the limiting grooves, the positioning plug pins and the positioning insertion holes at the same time, the phenomenon of loosening of the cast iron well lid is powerfully prevented, the practicability is good, and the novel cast iron well lid anti-loosening mechanism is suitable for wide application and popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron manhole covers, in particular to an anti-loosening mechanism for cast iron manhole covers. Background Art

[0002] Cast iron manhole cover is a common type of manhole cover, usually made of cast iron material. Cast iron manhole cover has high strength and wear resistance, which enables it to withstand heavy pressure and frequent use from vehicles, pedestrians, etc., and has a long service life. At present, cast iron manhole cover has been widely used in urban roads, sidewalks, parks, squares and other places as manhole coverings, playing a role in protecting facilities and pedestrian safety.

[0003] The utility model of patent number CN213296429U discloses an anti-skid cast iron manhole cover, including a frame and a manhole cover, wherein the inner wall of the frame is fixedly connected with a placement step, the manhole cover is arranged above the frame, a cover opening is opened on the manhole cover, an anti-skid pattern is arranged on the upper surface of the manhole cover, and a positioning ring is fixedly connected on the lower surface of the manhole cover. The utility model arranges two clamping blocks at both ends of the manhole cover, and an L-shaped clamping groove is opened at the corresponding position of the inner wall of the frame. When the manhole cover is installed, the clamping block needs to be aligned with the L-shaped clamping groove, and then the manhole cover is rotated counterclockwise to tightly clamp the clamping block with the L-shaped clamping groove, and the top block at the bottom of the inner wall of the L-shaped clamping groove cooperates with the compression spring to hold the bottom of the clamping block, so that the manhole cover is not easy to loosen, thereby avoiding the manhole cover from slipping, and the positioning ring plays a role of positioning, and the clamping column at the bottom of the manhole cover is clamped with the sliding hole on the placement step, so that the manhole cover and the frame are more firmly connected.

[0004] The existing cast iron manhole cover has the following disadvantages: the structure is relatively simple, there is a lack of a structure that uses multiple components to simultaneously enhance the stability of the cast iron manhole cover, and the cast iron manhole cover is prone to loosening, resulting in poor practicality. To this end, we propose a cast iron manhole cover anti-loosening mechanism. Utility Model Content

[0005] The main purpose of the utility model is to provide a cast iron manhole cover anti-loosening mechanism, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A cast iron manhole cover anti-loosening mechanism comprises a shaft and a limit platform, wherein a cast iron manhole cover is arranged on the top of the shaft, a limit block is evenly connected to the upper end of the outer periphery of the cast iron manhole cover, a sealing ring is sleeved on the lower end of the outer periphery of the cast iron manhole cover, a manhole cover bottom plate is arranged at the bottom of the cast iron manhole cover, and positioning pins are connected to the four sides of the bottom of the manhole cover bottom plate.

[0008] Furthermore, a wellhead is opened inside the wellway, and a limit platform is provided inside the wellway and outside the wellhead.

[0009] Furthermore, limiting grooves are provided inside the shaft and on the periphery of the limiting platform.

[0010] Furthermore, positioning holes are provided around the top of the limiting platform.

[0011] Furthermore, the diameter of the manhole cover bottom plate is smaller than the diameter of the cast iron manhole cover.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model provides a cast iron manhole cover anti-loosening mechanism. Through the limit block and the limit groove, the personnel insert the limit block on the outside of the cast iron manhole cover into the inside of the limit groove, and the cast iron manhole cover can be fixedly connected to the well. Through the positioning pin and the positioning hole, the personnel insert the pin into the inside of the positioning hole to further fix the cast iron manhole cover to the well, thereby achieving the purpose of simultaneously using the limit block, the limit groove, the positioning pin and the positioning hole and other components to enhance the stability of the cast iron manhole cover.

[0014] 2. The utility model provides a cast iron manhole cover anti-loosening mechanism, which uses a sealing ring. The sealing ring is soft in texture and can fit tightly with the bottom plate of the manhole cover, effectively avoiding the existence of a gap at the connection between the bottom of the cast iron manhole cover and the wellhead, thereby enhancing the stability of the cast iron manhole cover and playing a role in preventing loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a cast iron manhole cover anti-loosening mechanism.

[0016] Figure 2 The utility model is a schematic diagram of the connection structure of a cast iron manhole cover anti-loosening mechanism.

[0017] Figure 3 The utility model is a schematic diagram of the structure of a cast iron manhole cover with an anti-loosening mechanism for the cast iron manhole cover.

[0018] In the figure: 1, shaft; 2, cast iron manhole cover; 3, limit block; 4, sealing ring; 5, limit groove; 6, limit platform; 7, positioning pin; 8, positioning hole; 9, wellhead; 10, bottom plate of manhole cover. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-3As shown, a cast iron manhole cover anti-loosening mechanism includes a shaft 1 and a limit platform 6, a cast iron manhole cover 2 is arranged on the top of the shaft 1, the upper end of the outer periphery of the cast iron manhole cover 2 is evenly connected to a limit block 3, a sealing ring 4 is sleeved on the lower end of the outer periphery of the cast iron manhole cover 2, a manhole cover bottom plate 10 is arranged at the bottom of the cast iron manhole cover 2, and positioning pins 7 are connected on all sides of the bottom of the manhole cover bottom plate 10.

[0021] A wellhead 9 is provided inside the well 1 , and a limiting platform 6 is provided inside the well 1 and outside the wellhead 9 .

[0022] In this embodiment, Figure 2 As shown, the limiting platform 6 can limit the bottom of the cast iron manhole cover 2.

[0023] The interior of the shaft 1 and the periphery of the limiting platform 6 are provided with limiting grooves 5 .

[0024] In this embodiment, Figure 2 As shown, the limiting groove 5 facilitates the connection and fixation of the limiting block 3.

[0025] Among them, positioning holes 8 are opened on all four sides of the top of the limiting platform 6.

[0026] In this embodiment, Figure 1 As shown, the positioning hole 8 facilitates the connection and fixation of the positioning pin 7.

[0027] Wherein, the diameter of the manhole cover bottom plate 10 is smaller than the diameter of the cast iron manhole cover 2 .

[0028] In this embodiment, Figure 3 As shown, the diameter of the manhole cover bottom plate 10 at the bottom of the cast iron manhole cover 2 is smaller than the diameter of the cast iron manhole cover 2, and the diameter of the manhole cover bottom plate 10 is the same as the inner diameter of the sealing ring 4, and the outer diameter of the sealing ring 4 is the same as the diameter of the cast iron manhole cover 2. Therefore, the manhole cover bottom plate 10 can facilitate the installation of the sealing ring 4 and will not protrude from the edge of the cast iron manhole cover 2.

[0029] It should be noted that the utility model is a cast iron manhole cover anti-loosening mechanism. When working, the personnel place the cast iron manhole cover 2 on the top of the wellhead 9 in the well 1. Through the limit block 3 and the limit groove 5, the personnel insert the limit block 3 on the outside of the cast iron manhole cover 2 into the inside of the limit groove 5, and the cast iron manhole cover 2 can be fixedly connected with the well 1. Furthermore, through the positioning pin 7 and the positioning hole 8, when the personnel install the cast iron manhole cover 2 on the top of the wellhead 9 in the well 1, the bottom of the cast iron manhole cover 2 comes into contact with the limit platform 6 inside the well 1. The limit platform 6 can prevent the cast iron manhole cover 2 from sliding downward and make the positioning pin 7 available By inserting it into the interior of the positioning socket 8, the cast iron manhole cover 2 and the shaft 1 can be further fixed, thereby achieving the purpose of simultaneously using the limit block 3, the limit groove 5, the positioning pin 7 and the positioning socket 8 and other components to enhance the stability of the cast iron manhole cover 2 and prevent the cast iron manhole cover 2 from loosening. The sealing ring 4 is made of nitrile rubber material with good corrosion resistance and soft texture. It can fit tightly with the bottom of the cast iron manhole cover 2, effectively avoiding the presence of a gap at the connection between the bottom of the cast iron manhole cover 2 and the wellhead 9, thereby enhancing the stability of the cast iron manhole cover 2 and playing a role in preventing loosening.

[0030] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cast iron manhole cover anti-loosening mechanism, comprising a shaft (1) and a limit platform (6), characterized in that: A cast iron manhole cover (2) is arranged at the top of the shaft (1), the upper end of the outer periphery of the cast iron manhole cover (2) is evenly connected to a limiting block (3), the lower end of the outer periphery of the cast iron manhole cover (2) is sleeved with a sealing ring (4), and a manhole cover bottom plate (10) is arranged at the bottom of the cast iron manhole cover (2), and positioning pins (7) are connected to the four sides of the bottom of the manhole cover bottom plate (10).

2. The anti-loosening mechanism for a cast iron manhole cover according to claim 1, characterized in that: A wellhead (9) is provided inside the wellway (1), and a limit platform (6) is provided inside the wellway (1) and outside the wellhead (9).

3. The anti-loosening mechanism for a cast iron manhole cover according to claim 1, characterized in that: Limiting grooves (5) are provided inside the shaft (1) and on the periphery of the limiting platform (6).

4. The anti-loosening mechanism for a cast iron manhole cover according to claim 1, characterized in that: Positioning holes (8) are provided on all four sides of the top of the limiting platform (6).

5. The anti-loosening mechanism for a cast iron manhole cover according to claim 1, characterized in that: The diameter of the manhole cover bottom plate (10) is smaller than the diameter of the cast iron manhole cover (2).

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