Inspection well cover convenient to open

Abstract

The utility model relates to the technical field of inspection well covers and discloses an inspection well cover convenient to open, which comprises a base, the base is of an annular structure, the inner wall of the base is mainly composed of an inner conical surface and a first annular surface, the inner conical surface is located on the lower side of the first annular surface, and the well cover is of a disc structure. The outer side face of the well lid body is mainly composed of an outer conical face and a second annular face, the outer conical face is located on the lower side of the second annular face, the well lid body is installed in the base, and meanwhile the outer conical face is attached to the inner conical face. The inner conical surface is arranged on the inner wall of the base, the inner diameter of the upper end of the inner conical surface is larger than that of the lower end, and the inner diameter of the upper end of the outer conical surface is larger than that of the lower end, so that the lower end of the well lid enters the inner end of the opening of the base, and the base and the well lid can be matched conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole covers, in particular to a manhole cover which is easy to open. Background Art

[0002] During municipal construction, in order to facilitate the inspection and maintenance of underground pipelines (such as sewers, underground gas pipelines, tap water pipelines, power pipelines, communication pipelines, national defense pipelines, etc.), an exit leading to the ground will be set at a certain distance above the pipeline. To prevent people or objects from falling, the exit position needs to be covered with a manhole cover.

[0003] The inner side surface of the base of the existing manhole cover is a step surface. When opening the manhole cover, the whole manhole cover needs to be pulled upward to pull out the manhole cover, which is not convenient for a single person to operate. Utility Model Content

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a manhole cover that is easy to open, comprising a base and a pedestal;

[0006] The base is an annular structure, and the inner wall of the base is mainly composed of an inner conical surface and a first annular surface, and the inner conical surface is located at the lower side of the first annular surface;

[0007] The manhole cover is a disc structure, the outer side of the manhole cover is mainly composed of an outer conical surface and a second annular surface, the outer conical surface is located below the second annular surface, the manhole cover is installed inside the base, and the outer conical surface fits the inner conical surface;

[0008] After the base is fixed, the manhole cover is placed inside the base to close the opening formed by the base. Since the inner wall of the base is provided with an inner conical surface, the inner diameter of the upper end of the inner conical surface is larger than the inner diameter of the lower end, and the inner diameter of the upper end of the outer conical surface is larger than the inner diameter of the lower end, the lower end of the manhole cover enters the inner end of the opening of the base, which facilitates the matching of the base and the manhole cover.

[0009] Since the inner side surface of the base of the existing manhole cover is a stepped surface, the entire manhole cover needs to be pulled out when opening the manhole cover. The contact surface between the base and the manhole cover of the present application is a conical surface. When opening the manhole cover, only one end of the manhole cover needs to be pulled upward, and the other end of the manhole cover slides downward along the conical surface to form an opening.

[0010] Furthermore, the bottom end of the manhole cover is provided with an edge body, and the edge body is installed in the lower port of the inner conical surface;

[0011] The contact between the body and the lower end of the inner conical surface can prevent one side of the manhole cover from warping up along the conical surface after being pressed.

[0012] Furthermore, the upper end surface of the base is provided with an annular groove, the bottom surface of the annular groove is provided with a drainage hole, and the drainage hole is located at the lowest point of the annular groove;

[0013] The annular groove is provided to facilitate the collection of water on the surface of the manhole cover and discharge through the drainage hole.

[0014] Furthermore, the annular groove is provided with a plurality of radially distributed ribs, the two opposite sides of the annular groove are connected by the ribs, and there is a gap between the lowest point of the annular groove and the bottom surface of the ribs.

[0015] Furthermore, a step surface is provided on the outer side of the base, and a plurality of side edges are provided on the step surface.

[0016] Furthermore, a plurality of arc-shaped protrusions extending downward are provided on the outer side of the base, and a plurality of convex blocks are provided on the lower end surface of the base, and the convex blocks are connected to the arc-shaped protrusions;

[0017] The convex blocks and the arc-shaped protrusions cooperate with the concrete on the bottom surface and increase the contact area, thereby improving the reliability of the connection.

[0018] The utility model has the following beneficial effects:

[0019] The utility model has an inner conical surface on the inner wall of the base, the inner diameter of the upper end of the inner conical surface is larger than the inner diameter of the lower end, and the inner diameter of the upper end of the outer conical surface is larger than the inner diameter of the lower end, so that the lower end of the manhole cover enters into the inner end of the opening of the base, which facilitates the cooperation between the base and the manhole cover.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0024] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;

[0025] Figure 4 This is a schematic diagram of the base structure of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the base of the utility model when viewed from above;

[0027] Figure 6 This is a schematic diagram of the structure of the manhole cover of the utility model;

[0028] Figure 7 This is a schematic diagram of the structure of the manhole cover of the utility model when viewed from above;

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] In the figure: 1, base; 11, step surface; 12, side edge; 13, inner conical surface; 14, first annular surface; 15, arc-shaped protrusion; 16, bump; 2, manhole cover; 21, annular groove; 22, rib; 23, outer conical surface; 24, along the body; 25, second annular surface; 26, drainage hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-Figure 7 As shown, the utility model is a manhole cover that is easy to open, comprising a base 1 and a base 1;

[0033] The base 1 is an annular structure, and the inner wall of the base 1 is mainly composed of an inner conical surface 13 and a first annular surface 14, and the inner conical surface 13 is located at the lower side of the first annular surface 14;

[0034] The manhole cover 2 is a disc structure, and the outer side surface of the manhole cover 2 is mainly composed of an outer conical surface 23 and a second annular surface 25. The outer conical surface 23 is located at the lower side of the second annular surface 25. The manhole cover 2 is installed inside the base 1, and the outer conical surface 23 fits with the inner conical surface 13.

[0035] After the base 1 is fixed, the manhole cover 2 is placed inside the base 1 to close the opening formed by the base 1. Since the inner wall of the base 1 is provided with an inner conical surface 13, the inner diameter of the upper end of the inner conical surface 13 is larger than the inner diameter of the lower end, and the inner diameter of the upper end of the outer conical surface 23 is larger than the inner diameter of the lower end, the lower end of the manhole cover 2 enters the inner end of the opening of the base 1, which facilitates the matching of the base 1 and the manhole cover 2.

[0036] Since the inner side surface of the base of the existing manhole cover is a stepped surface, the entire manhole cover needs to be pulled upward to open the manhole cover. The contact surface between the base 1 and the manhole cover 2 of the present application is a conical surface. When opening the manhole cover 2, only one end of the manhole cover 2 needs to be pulled upward, and the other end of the manhole cover 2 slides downward along the conical surface to form an opening.

[0037] The bottom end of the manhole cover 2 is provided with an edge body 24, which is fitted in the lower end of the inner conical surface 13;

[0038] The body 24 is in contact with the lower end of the inner conical surface 13 to prevent one side of the manhole cover 2 from warping upward along the conical surface after being compressed.

[0039] The height of the first annular surface 14 and the edge body 24 is in the range of 1 cm-1.5 cm, so that when the manhole cover 2 is pulled upward through the drainage hole 26 provided on one side, it is easy to achieve that the side edge is tilted upward.

[0040] The upper end surface of the base 1 is provided with an annular groove 21, and the bottom surface of the annular groove 21 is provided with a drainage hole 26, and the drainage hole 26 is located at the lowest point of the annular groove 21;

[0041] The annular groove 21 is provided to facilitate the water on the surface of the manhole cover 2 to gather and be discharged through the drainage hole 26.

[0042] The annular groove 21 is provided with a plurality of radially distributed ribs 22. The opposite sides of the annular groove 21 are connected by the ribs 22. There is a gap between the lowest point of the annular groove 21 and the bottom surface of the ribs 22.

[0043] A step surface 11 is provided on the outer side of the base 1 , and a plurality of side edges 12 are provided on the step surface 11 .

[0044] A plurality of arc-shaped protrusions 15 extending downward are provided on the outer side of the base 1, and a plurality of protrusions 16 are provided on the lower end surface of the base 1, and the protrusions 16 are connected to the arc-shaped protrusions 15;

[0045] The convex block 16 and the arc-shaped protrusion 15 cooperate with the concrete on the bottom surface and increase the contact area, thereby improving the reliability of the connection.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A manhole cover that is easy to open, comprising a base (1), characterized in that: The base (1) is an annular structure; The inner wall of the base (1) is mainly composed of an inner conical surface (13) and a first annular surface (14), and the inner conical surface (13) is located at the lower side of the first annular surface (14); The manhole cover (2) is a disc structure; The outer side surface of the manhole cover (2) is mainly composed of an outer conical surface (23) and a second annular surface (25), and the outer conical surface (23) is located at the lower side of the second annular surface (25); The manhole cover (2) is installed inside the base (1), and the outer conical surface (23) fits the inner conical surface (13).

2. The easy-to-open manhole cover according to claim 1, characterized in that: The bottom end of the manhole cover (2) is provided with an edge body (24), and the edge body (24) is mounted in a matching manner in the lower port of the inner conical surface (13).

3. The easy-to-open manhole cover according to claim 1, characterized in that: The upper end surface of the base (1) is provided with an annular groove (21), and the bottom surface of the annular groove (21) is provided with a drainage hole (26); The drainage hole (26) is located at the lowest point of the annular groove (21).

4. The easy-to-open manhole cover according to claim 3, characterized in that: The annular groove (21) is provided with a plurality of radially distributed ribs (22), the two opposite sides of the annular groove (21) are connected by the ribs (22), and a gap exists between the lowest point of the annular groove (21) and the bottom surface of the ribs (22).

5. The easy-to-open manhole cover according to claim 1, characterized in that: The outer side of the base (1) is provided with a step surface (11), and the step surface (11) is provided with a plurality of side edges (12).

6. The easy-to-open manhole cover according to claim 1, characterized in that: A plurality of arc-shaped protrusions (15) extending downward are arranged on the outer side of the base (1), and a plurality of convex blocks (16) are arranged on the lower end surface of the base (1), wherein the convex blocks (16) are connected to the arc-shaped protrusions (15).

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