Adjustable prefabricated concrete well lid gasket

Abstract

The utility model discloses an adjustable precast concrete well lid gasket, which relates to the technical field of gaskets, and comprises an upper part and a lower part which are arranged in an annular split manner to form a gasket body; the connecting part is detachably connected between the upper part and the lower part; a second external thread is arranged on the upper portion of the outer surface of the connecting portion and connected with the upper portion, a second internal thread is arranged on the lower portion of the inner surface of the connecting portion and connected with the lower portion, the upper portion moves relative to the connecting portion, and the lower portion moves relative to the connecting portion. If the height of the gasket needs to be adjusted, a worker can directly rotate the upper part or the lower part, so that the upper part can rotate through the matching of the first internal thread and the second external thread, and the lower part can rotate through the matching of the first external thread and the second internal thread, and therefore, the upper part and the lower part of the gasket are relatively far away for lifting treatment; the adjusting range is large and movement is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of washers, in particular to an adjustable prefabricated concrete manhole cover washer. Background Art

[0002] Concrete manhole covers are commonly used manhole covers for various sewers. They are practical and have low production costs. If maintenance is needed in the later stage of use, the recycled concrete manhole covers can be recycled, which can reduce energy waste. The recycled concrete manhole covers have good load-bearing and compression resistance. The manhole cover gasket is mainly used to adjust the height between the manhole cover and the wellhead to ensure that the manhole cover is flat and flush with the road surface. At the same time, it can withstand the heavy pressure of passing vehicles and pedestrians to avoid displacement of the manhole cover or noise.

[0003] Referring to the existing patent publication number: CN214883884U, an adjustable precast concrete manhole cover gasket includes a circular ring-shaped gasket body, the gasket body includes an upper ring body and a lower ring body cast with concrete, the upper surface of the lower ring body is evenly provided with a plurality of groove groups, each groove group contains 2-4 grooves with the same caliber and successively increasing depths; the lower surface of the upper ring body is provided with a boss matching the number of the groove groups at a relative position to the groove group, and the lower ring body and the upper ring body are effectively connected and fixed by arranging a locking protrusion and a locking groove, eliminating the trouble of additional fixing; after using for a period of time to check the settlement of the well, it can be adjusted again, which has a good use effect.

[0004] However, in actual use of the above-mentioned manhole cover gasket, when adjusting the height of the gasket, the gasket is divided into two parts. When splicing the two parts to adjust the height, it is necessary to continuously lift the two ring bodies to achieve a certain effect. When lifting, the ring body has a certain weight, which results in greater labor intensity and inconvenience for personnel. In addition, the gasket has poor strength and is easily worn during use. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and propose an adjustable prefabricated concrete manhole cover gasket. The utility model connects the two parts of the gasket through a connecting part so that the upper part and the lower part of the gasket can rotate relative to the connecting part, reducing the high labor intensity caused by lifting the gasket and making it more convenient to adjust the height of the gasket.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An adjustable precast concrete manhole cover gasket, comprising:

[0008] The upper part and the lower part are both arranged separately in a circular ring shape and together constitute the gasket body;

[0009] a connecting portion detachably connected between the upper portion and the lower portion;

[0010] A second external thread is arranged above the outer surface of the connection part and connected to the upper part, and a second internal thread is arranged below the inner surface of the connection part and connected to the lower part. The upper part moves relative to the connection part, and the lower part moves relative to the connection part.

[0011] The utility model is further configured such that the connecting portion is located in the inner space between the upper portion and the lower portion.

[0012] The utility model is further configured that a first internal thread matching with a second external thread is arranged below the inner surface of the upper portion.

[0013] The utility model is further configured that a first external thread is arranged above the outer surface of the lower part and matches with a second internal thread.

[0014] The utility model is further configured such that the outer diameter and the inner diameter of the upper part and the lower part are the same.

[0015] The utility model is further configured that the upper part of the lower part is convexly arranged, and the convex part of the lower part is located on the inner side of the upper part.

[0016] The utility model is further configured that the gasket body comprises: a base layer, an anti-corrosion layer, an elastic member, a reinforcing member and a wear-resistant member;

[0017] The base layer is located inside the gasket body, and the outer surface of the base layer is respectively installed with an anti-corrosion layer, an elastic member, a reinforcing member and a wear-resistant member.

[0018] The beneficial effects of the utility model are as follows: the utility model connects the two parts of the gasket through the connecting part, so that the upper part and the lower part of the gasket can be rotated relative to the connecting part, reducing the high labor intensity caused by lifting the gasket and making it more convenient to adjust the height of the gasket.

[0019] 1. The adjustable precast concrete manhole cover gasket is provided with a connecting portion, a first external thread, a first internal thread, a second external thread and a second internal thread. When the gasket is connected to the manhole cover for use, if the height of the gasket needs to be adjusted, the personnel can directly rotate the upper part or the lower part, so that the upper part can be rotated by the first internal thread and the second external thread, and the lower part can be rotated by the first external thread and the second internal thread, so that the upper part and the lower part of the gasket are relatively separated for lifting processing, the adjustment range is large, the activity is convenient, and the usability of the gasket is improved.

[0020] 2. The adjustable precast concrete manhole cover gasket is provided with wear-resistant parts, reinforcement parts and elastic parts. The wear-resistant parts can be reinforcing materials such as glass fiber or carbon fiber, which can significantly improve the strength and durability of the gasket and prevent the gasket from deforming or breaking after long-term load-bearing. The reinforcement parts can be thermal conductive materials such as graphene, etc., which are used to adjust the temperature of the gasket to prevent freezing caused by excessive cooling in winter or overheating in summer. The elastic parts can be polymer modified materials to increase the elasticity and wear resistance of the gasket and have good waterproof performance, thereby improving the adaptability and service life of the manhole cover gasket, avoiding the gasket from being difficult to recover after being pressed, and improving the performance of the gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the overall structure of an adjustable precast concrete manhole cover gasket proposed by the utility model;

[0022] Figure 2 A schematic diagram of the disassembled structure of an adjustable precast concrete manhole cover gasket proposed by the utility model;

[0023] Figure 3 This is a schematic diagram of the front cross-sectional structure of an adjustable precast concrete manhole cover gasket proposed by the utility model;

[0024] Figure 4 The utility model provides a schematic diagram of the internal structure of an adjustable precast concrete manhole cover gasket.

[0025] In the figure: 1, upper part; 2, lower part; 3, first internal thread; 4, first external thread; 5, connecting part; 6, second external thread; 7, second internal thread; 8, base layer; 9, anti-corrosion layer; 10, elastic part; 11, reinforcement part; 12, wear-resistant part. DETAILED DESCRIPTION

[0026] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0029] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0030] Reference Figure 1-4 , an adjustable prefabricated concrete manhole cover gasket, comprising: an upper part 1 and a lower part 2, both of which are separately arranged in a circular ring shape to jointly constitute a gasket body, so as to facilitate the separate movement of the gasket; a connecting part 5, which is detachably connected between the upper part 1 and the lower part 2; a second external thread 6 is arranged above the outer surface of the connecting part 5 to be connected to the upper part 1, and a second internal thread 7 is arranged below the inner surface of the connecting part 5 to be connected to the lower part 2, the upper part 1 and the connecting part 5 move relative to each other, and the lower part 2 and the connecting part 5 move relative to each other, so that the upper part 1 and the lower part 2 can move in the same direction or in opposite directions, so as to provide a variety of adjustment methods.

[0031] Reference Figure 3 The connecting part 5 is located in the inner space between the upper part 1 and the lower part 2. Furthermore, the height of the provided space can be consistent with the height of the connecting part 5, so that the connecting part 5 can be better received between the upper part 1 and the lower part 2, and the upper part 1 and the lower part 2 are supported by the connecting part 5 to improve the strength of the gasket.

[0032] Reference Figure 2-3 A first internal thread 3 is provided below the inner surface of the upper part 1 to cooperate with the second external thread 6. Furthermore, the height of the first internal thread 3 can be consistent with the height of the second external thread 6, so that the upper part 1 and the connecting part 5 can be better matched, and the adjustable height of the upper part 1 is related to the heights of the first internal thread 3 and the second external thread 6.

[0033] Reference Figure 2-3A first external thread 4 is provided above the outer surface of the lower part 2 to cooperate with the second internal thread 7. Furthermore, the adjustment height of the lower part 2 is related to the height set by the first external thread 4 and the second internal thread 7. The adjustment height of the lower part 2 can be the same as the adjustment height of the upper part 1 to maintain consistency, so that the gasket can have a higher range of height adjustment.

[0034] Reference Figure 1-3 The outer diameter and inner diameter of the upper part 1 and the lower part 2 are the same. Further, by setting the inner and outer diameters of the upper part 1 and the lower part 2 of the gasket to be the same, the unevenness of the gasket is reduced and the consistency of its force is improved to avoid bending.

[0035] Reference Figure 2-3 The upper part of the lower part 2 is convex, and the convex part of the lower part 2 is located on the inner side of the upper part 1, so that the lower part 2 of the gasket can better cover the upper part 1 and reduce the gap.

[0036] Reference Figure 4 The gasket body includes: a base layer 8, an anti-corrosion layer 9, an elastic member 10, a reinforcement member 11 and a wear-resistant member 12; the base layer 8 is located inside the gasket body, and the outer surface of the base layer 8 is respectively installed with an anti-corrosion layer 9, an elastic member 10, a reinforcement member 11 and a wear-resistant member 12. The anti-corrosion layer 9 can provide a certain anti-corrosion effect for the gasket and improve the service life of the gasket. The wear-resistant member 12 can be a reinforcing material such as glass fiber or carbon fiber, which can significantly improve the strength and durability of the gasket and prevent the gasket from deforming or cracking after long-term load-bearing. The reinforcement member 11 can be a thermal conductive material such as graphene, which is used to adjust the temperature of the gasket to prevent icing caused by excessive cooling in winter or overheating in summer. The elastic member 10 can be a polymer modified material to increase the elasticity and wear resistance of the gasket, and at the same time has good waterproof performance, which improves the adaptability and service life of the manhole cover gasket, avoids the gasket from being difficult to recover after being pressed, and improves the performance of the gasket.

[0037] Working principle: When using the utility model, the gasket is connected to the manhole cover for use. If the height of the gasket needs to be adjusted, the personnel can directly rotate the upper part 1 or the lower part 2, so that the upper part 1 can be rotated by the first internal thread 3 and the second external thread 6, and the lower part 2 can be rotated by the first external thread 4 and the second internal thread 7. In this way, the upper part 1 and the lower part 2 of the gasket are relatively far apart for lifting processing. The adjustment range is large and the activity is convenient, which improves the usability of the gasket and effectively reduces the labor intensity of personnel adjustment. At the same time, when the upper part 1 and the lower part 2 are relatively far apart, the connection part 5 can provide support for the upper part 1 and the lower part 2 to improve the strength of the gasket.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable precast concrete manhole cover gasket, characterized in that: include: The upper part (1) and the lower part (2) are both arranged separately in a circular ring shape and together constitute the gasket body; A connecting portion (5) detachably connected between the upper portion (1) and the lower portion (2); A second external thread (6) is provided above the outer surface of the connecting portion (5) and is connected to the upper portion (1); a second internal thread (7) is provided below the inner surface of the connecting portion (5) and is connected to the lower portion (2); the upper portion (1) and the connecting portion (5) move relative to each other, and the lower portion (2) and the connecting portion (5) move relative to each other.

2. An adjustable precast concrete manhole cover gasket according to claim 1, characterized in that: The connecting portion (5) is located in the inner space between the upper portion (1) and the lower portion (2).

3. The adjustable precast concrete manhole cover gasket according to claim 1, characterized in that: A first internal thread (3) matching with a second external thread (6) is provided below the inner surface of the upper part (1).

4. The adjustable precast concrete manhole cover gasket according to claim 1, characterized in that: A first external thread (4) is provided above the outer surface of the lower part (2) and matches with a second internal thread (7).

5. The adjustable precast concrete manhole cover gasket according to claim 1, characterized in that: The outer diameter and inner diameter of the upper part (1) and the lower part (2) are the same.

6. The adjustable precast concrete manhole cover gasket according to claim 5, characterized in that: The upper part of the lower part (2) is convex, and the convex part of the lower part (2) is located on the inner side of the upper part (1).

7. The adjustable precast concrete manhole cover gasket according to claim 1, characterized in that: The gasket body comprises: a base layer (8), an anti-corrosion layer (9), an elastic member (10), a reinforcing member (11) and a wear-resistant member (12); The base layer (8) is located inside the gasket body, and the outer surface of the base layer (8) is respectively installed with an anti-corrosion layer (9), an elastic member (10), a reinforcing member (11) and a wear-resistant member (12).

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