High-strength cast iron well lid capable of being opened and closed in overturning mode

Abstract

The utility model relates to the technical field of cast iron well lids, in particular to a high-strength cast iron well lid capable of being opened and closed in an overturning mode. Comprising a well lid shell and a cast iron well lid body, the cast iron well lid body is installed above the well lid shell, an arc rubber strip and a circular rubber strip are installed above the cast iron well lid body in a clamped mode, installation protruding blocks are installed above the cast iron well lid body at equal intervals, and opening through holes are formed in the installation protruding blocks; a limiting clamping pin is installed in the middle of the installation protruding block. When a vehicle or a pedestrian passes through the upper portion of the cast iron well lid body, the friction force of the top of the cast iron well lid body can be increased through cooperation of the arc rubber strips, the circular rubber strips and the cross-shaped protruding blocks, certain pressure can be absorbed through the arc rubber strips and the circular rubber strips, and vibration of the circular rubber strips is reduced; by the adoption of the mode, vibration generated when a vehicle passes through the cast iron well lid body can be effectively reduced, then noise pollution is reduced, and the stability of the cast iron well lid body structure and the service life of the cast iron well lid body are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cast iron manhole covers, in particular to a high-strength cast iron manhole cover that is flippable and openable. Background Art

[0002] Cast iron manhole covers are divided into ductile iron manhole covers and gray cast iron manhole covers. Generally speaking, ductile iron manhole covers of the same weight have stronger pressure resistance than gray iron manhole covers. They are mainly used in municipal roads, highways, communications, electricity, tap water, communities, schools and other parks. Cast iron manhole covers need to go through multiple processes such as casting, cooling, grinding, and painting during the production process. The surface of cast iron manhole covers is generally painted to enhance their corrosion resistance and aesthetics. When installing cast iron manhole covers, it is necessary to ensure that the manhole cover and the manhole frame fit closely to ensure the stability and safety of the manhole cover. Cast iron manhole covers are a durable and safe building material that plays an important role in urban construction and maintenance. When existing cast iron manhole covers are used on the road, vehicles passing through the manhole covers will vibrate, causing certain noise pollution, which will also affect the structural stability of the manhole cover and reduce the service life of the manhole cover. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a high-strength cast iron manhole cover that can be flipped open and closed, so as to solve the problem that when the existing cast iron manhole cover is used on the road, it will generate vibration when vehicles pass through the manhole cover, produce certain noise pollution, and also affect the structural stability of the manhole cover and reduce the service life of the manhole cover.

[0004] To achieve the above objectives, the utility model adopts the following technical solution: a high-strength cast iron manhole cover that can be flipped open and closed, comprising a manhole cover shell and a cast iron manhole cover body, the outer side of the manhole cover shell is provided with reinforcing ribs at equal intervals, and the inner side of the manhole cover shell is provided with supporting protrusions, the cast iron manhole cover body is installed on the top of the manhole cover shell, and an arc rubber strip is snap-fitted and installed on the top of the cast iron manhole cover body, cross-shaped protrusions are installed at equal intervals on the top of the cast iron manhole cover body, a circular rubber strip is snap-fitted and installed on the top of the cast iron manhole cover body, mounting protrusions are installed at equal intervals on the top of the cast iron manhole cover body, an opening through hole is provided on the mounting protrusion, and a limiting pin is installed on the middle part of the mounting protrusion.

[0005] The beneficial effect of the utility model is that when a vehicle or pedestrian passes over the cast iron manhole cover body, the arc rubber strip, the circular rubber strip and the cross-shaped protrusion can increase the friction on the top of the cast iron manhole cover body, and the arc rubber strip and the circular rubber strip can absorb a certain pressure and reduce the vibration of the circular rubber strip. This method can effectively reduce the vibration generated when a vehicle passes over the cast iron manhole cover body, thereby reducing noise pollution and ensuring the stability of the cast iron manhole cover body structure and the service life of the cast iron manhole cover body.

[0006] To increase the structural strength of the manhole cover shell:

[0007] As a further improvement of the above technical solution: the reinforcing ribs are welded to the manhole cover shell, and the cross-section of the reinforcing ribs is arranged in a triangular shape.

[0008] The beneficial effects of this improvement are: the welding connection can make the connection between the reinforcing ribs and the manhole cover shell more reliable and firm, and the reinforcing ribs arranged in a triangular shape can effectively increase the structural strength of the manhole cover shell.

[0009] To facilitate the opening and closing of the cast iron manhole cover:

[0010] As a further improvement of the above technical solution: a rotating shaft is installed at the connection between the cast iron manhole cover body and the manhole cover shell, and a rotating installation structure is formed between the cast iron manhole cover body and the manhole cover shell through the rotating shaft.

[0011] The beneficial effect of this improvement is that the cast iron manhole cover body can be rotated along the rotating shaft to make the opening and closing of the cast iron manhole cover body more convenient and quick.

[0012] In order to increase the smoothness of the surface of the cast iron manhole cover:

[0013] As a further improvement of the above technical solution: the tops of the arc rubber strip and the circular rubber strip are chamfered.

[0014] The beneficial effect of this improvement is that the rounded arc rubber strip and the circular rubber strip can avoid hard contact between the arc rubber strip and the circular rubber strip and the wheel, thereby ensuring the efficiency and effect of the arc rubber strip and the circular rubber strip in absorbing vibration.

[0015] As a further improvement of the above technical solution: the circular rubber strip and the cast iron manhole cover body are arranged with their axes coincident, and the number of the circular rubber strips is three.

[0016] The beneficial effects of this improvement are as follows: the circular rubber strips arranged with overlapping axes can ensure the aesthetics of the upper surface of the cast iron manhole cover body, and the three circular rubber strips can cooperate with the arc rubber strips to absorb the vibration of the vehicle.

[0017] In order to facilitate the fixation of the cast iron manhole cover body:

[0018] As a further improvement of the above technical solution: the limit pin and the mounting protrusion are threadedly connected, and the number of the limit pins is three.

[0019] The beneficial effects of this improvement are: the threaded connection can make the limit pin more convenient to adjust and rotate, and the three limit pins can fix the cast iron manhole cover body at three points. This method can ensure the stability of the position of the cast iron manhole cover body.

[0020] As a further improvement of the above technical solution: the cross section of the limit pin is L-shaped.

[0021] The beneficial effect of this improvement is that the L-shaped limit pin and the supporting protrusion can fully and reliably limit and fix the position of the cast iron manhole cover body.

[0022] To facilitate the adjustment of the limit pin position:

[0023] As a further improvement of the above technical solution: a triangular groove is provided above the limit pin, and the limit pin fits tightly with the supporting protrusion.

[0024] The beneficial effect of this improvement is that the triangular groove can be used in conjunction with a triangular wrench to drive the limit pin to rotate, making it convenient for workers to open the cast iron manhole cover body. The limit pin that fits tightly with the supporting protrusion can make the limit pin more reliable and firm in limiting the position of the cast iron manhole cover body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall axonometric structure.

[0026] Figure 2 This is a schematic diagram of the overall axonometric structure.

[0027] Figure 3 This is a schematic diagram of the overall axonometric half-section structure.

[0028] Figure 4 It is a schematic diagram of the overall main structure.

[0029] Figure 5 This is a schematic diagram of the overall structure when viewed from above.

[0030] In the figure: 1. manhole cover shell; 11. reinforcing ribs; 12. supporting protrusions; 2. cast iron manhole cover body; 21. arc rubber strip; 22. cross-shaped protrusions; 23. circular rubber strips; 24. mounting protrusions; 3. opening holes; 31. limit pins. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the utility model.

[0032] like Figure 1-5As shown, a high-strength cast iron manhole cover that can be flipped and opened includes a manhole cover shell 1 and a cast iron manhole cover body 2. The outer side of the manhole cover shell 1 is provided with reinforcing ribs 11 at equal intervals, and the inner side of the manhole cover shell 1 is provided with supporting protrusions 12. The cast iron manhole cover body 2 is installed on the top of the manhole cover shell 1, and a circular arc rubber strip 21 is installed on the top of the cast iron manhole cover body 2, and a cross-shaped protrusion 22 is installed on the top of the cast iron manhole cover body 2 at equal intervals. A circular rubber strip 23 is installed on the top of the cast iron manhole cover body 2, and mounting protrusions 24 are installed on the top of the cast iron manhole cover body 2 at equal intervals. An opening through hole 3 is opened on the mounting protrusion 24, and a limiting latch 31 is installed in the middle of the mounting protrusion 24. When the cast iron manhole cover body 2 When a vehicle or pedestrian passes by, the arc rubber strip 21 cooperates with the round rubber strip 23 and the cross-shaped protrusion 22 to increase the friction force on the top of the cast iron manhole cover body 2, and the arc rubber strip 21 and the round rubber strip 23 can absorb a certain pressure and reduce the vibration of the round rubber strip 23. This method can effectively reduce the vibration generated when a vehicle passes through the cast iron manhole cover body 2, thereby reducing noise pollution and ensuring the stability of the structure of the cast iron manhole cover body 2 and the service life of the cast iron manhole cover body 2. The reinforcing rib 11 is welded to the manhole cover shell 1, and the cross-section of the reinforcing rib 11 is set in a triangle. The welding connection can make the connection between the reinforcing rib 11 and the manhole cover shell 1 more reliable and firm. The reinforcing rib 11 set in a triangle can In order to effectively increase the structural strength of the manhole cover shell 1, a rotating shaft is installed at the connection between the cast iron manhole cover body 2 and the manhole cover shell 1, and the cast iron manhole cover body 2 and the manhole cover shell 1 form a rotating installation structure through the rotating shaft. The cast iron manhole cover body 2 rotates along the rotating shaft to make the opening and closing of the cast iron manhole cover body 2 more convenient and quick. The tops of the arc rubber strip 21 and the circular rubber strip 23 are chamfered. The chamfered arc rubber strip 21 and the circular rubber strip 23 can avoid the hard contact between the arc rubber strip 21 and the circular rubber strip 23 and the wheel, thereby ensuring the efficiency and effect of the arc rubber strip 21 and the circular rubber strip 23 in absorbing vibration. The circular rubber strip 23 and the cast iron manhole cover body 2 are arranged with the axis coinciding, and the circular rubber strip 23 is arranged with the axis coinciding. The number of strips 23 is three, and the circular rubber strips 23 with the axes overlapping can ensure the aesthetics of the upper surface of the cast iron manhole cover body 2. The three circular rubber strips 23 can cooperate with the arc rubber strips 21 to absorb the vibration of the vehicle. The limit pin 31 and the installation protrusion 24 are threadedly connected, and the number of the limit pins 31 is three. The threaded connection can make the limit pin 31 more convenient to adjust and rotate. The three limit pins 31 can fix the cast iron manhole cover body 2 at three points. This method can ensure the stability of the position of the cast iron manhole cover body 2. The cross-section of the limit pin 31 is L-shaped. The L-shaped limit pin 31 cooperates with the support protrusion 12 to fully and reliably limit and fix the position of the cast iron manhole cover body 2.A triangular groove is provided above the limit pin 31, and the limit pin 31 fits tightly with the support protrusion 12. The triangular groove can be used with a triangular wrench to drive the limit pin 31 to rotate, making it convenient for the staff to open the cast iron manhole cover body 2. The limit pin 31 that fits tightly with the support protrusion 12 can make the limit pin 31 limit the position of the cast iron manhole cover body 2 more reliable and firm.

[0033] The working principle of the utility model is as follows: when the device is used, the opening and closing of the cast iron manhole cover body 2 can be controlled by the rotating shaft. When the cast iron manhole cover body 2 is in the closed state, the limit pin 31 is rotated by a triangular wrench, and the limit pin 31 rotates to contact with the supporting protrusion 12 to fix the position of the cast iron manhole cover body 2. When a vehicle or pedestrian passes above the cast iron manhole cover body 2, the arc rubber strip 21 cooperates with the circular rubber strip 23 and the cross-shaped protrusion 22 to increase the friction force on the top of the cast iron manhole cover body 2, and a certain pressure can be absorbed by the arc rubber strip 21 and the circular rubber strip 23. The force can reduce the vibration of the circular rubber strip 23. This method can effectively reduce the vibration generated when the vehicle passes through the cast iron manhole cover body 2, thereby reducing noise pollution and ensuring the stability of the structure of the cast iron manhole cover body 2 and the service life of the cast iron manhole cover body 2. When the cast iron manhole cover body 2 needs to be opened, the limit pin 31 is rotated, and the limit pin 31 is disengaged from the supporting protrusion 12 when it descends. At this time, the cast iron manhole cover body 2 can be pulled up by opening the through hole 3, and the cast iron manhole cover body 2 and the manhole cover shell 1 are flipped open by the rotating shaft. This method can facilitate the opening and closing of the cast iron manhole cover body 2.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. The above is only the preferred implementation method of the utility model. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principle of the utility model, they can make several improvements, embellishments or changes, and can also combine the above technical features in an appropriate manner; these improvements, embellishments, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the protection scope of the utility model.

Claims

1. A high-strength cast iron manhole cover that can be flipped open and closed, comprising a manhole cover shell (1) and a cast iron manhole cover body (2), characterized in that: The outer side of the manhole cover shell (1) is provided with reinforcing ribs (11) at equal intervals, and the inner side of the manhole cover shell (1) is provided with supporting protrusions (12); the cast iron manhole cover body (2) is installed on the upper side of the manhole cover shell (1), and a circular arc rubber strip (21) is installed on the upper side of the cast iron manhole cover body (2); cross-shaped protrusions (22) are installed on the upper side of the cast iron manhole cover body (2) at equal intervals, and a circular rubber strip (23) is installed on the upper side of the cast iron manhole cover body (2); mounting protrusions (24) are installed on the upper side of the cast iron manhole cover body (2) at equal intervals, an opening through hole (3) is provided on the mounting protrusion (24), and a limit stop pin (31) is installed in the middle of the mounting protrusion (24).

2. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: The reinforcing rib plate (11) is connected to the manhole cover shell (1) by welding, and the cross section of the reinforcing rib plate (11) is arranged in a triangular shape.

3. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: A rotating shaft is installed at the connection between the cast iron manhole cover body (2) and the manhole cover shell (1), and a rotating installation structure is formed between the cast iron manhole cover body (2) and the manhole cover shell (1) through the rotating shaft.

4. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: The tops of the arc rubber strip (21) and the circular rubber strip (23) are rounded.

5. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: The circular rubber strip (23) and the cast iron manhole cover body (2) are arranged with their axes overlapping, and the number of the circular rubber strips (23) is three.

6. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: The limiting latch (31) is threadedly connected to the mounting protrusion (24), and the number of the limiting latch (31) is three.

7. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: The cross section of the position limiting latch (31) is L-shaped.

8. The high-strength cast iron manhole cover capable of flipping and opening according to claim 1, characterized in that: A triangular groove is provided above the limit locking pin (31), and the limit locking pin (31) and the supporting protrusion (12) are tightly fitted.

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