Simple prefabricated inspection well

Abstract

The utility model provides a simple prefabricated inspection well, and belongs to the technical field of municipal facilities, the simple prefabricated inspection well comprises an outer cylinder body of a cylindrical structure with an open top and an inner cylinder body embedded in the outer cylinder body, the inner wall of the outer cylinder body and the inner wall of the inner cylinder body are arranged at intervals, and a connecting pipe is arranged on the inner side wall of the inner cylinder body in a penetrating mode. According to the scheme, the outer cylinder body, the inner cylinder body, the limiting blocks and the extrusion blocks are arranged, the outer cylinder body and the inner cylinder body are nested with each other, a pre-manufacturing and assembling process is adopted for manufacturing, the outer cylinder body and the inner cylinder body are placed into a foundation pit, and the foundation pit with the size equivalent to that of the outer cylinder body is excavated during construction; by rotating the inner barrel, the inclined face of the extrusion block extrudes the limiting block, the limiting block moves towards the side away from the outer barrel and is inserted into soil on the side wall of the foundation pit, the stable supporting effect is achieved, and therefore the effect of reducing the excavation volume of the foundation pit is achieved, and the construction speed is increased.

Description

Technical Field

[0001] The present application relates to the technical field of municipal facilities, and in particular to a simple prefabricated inspection well. Background Art

[0002] Inspection wells are part of the city's underground infrastructure, mainly used for the inspection and maintenance of various pipelines. They are usually set up at the intersection and bend of pipelines. During urban construction, an inspection well needs to be set up at intervals. In order to shorten the construction period, prefabricated inspection wells are usually used in the existing mainstream construction process.

[0003] For example, a simple prefabricated inspection well with announcement number CN215715540U can be installed in the foundation pit when the construction conditions are complex and difficult when the soil reaches a certain strength. The prefabricated well shaft, prefabricated cover plate and prefabricated well chamber connected with sockets greatly reduce the difficulty of prefabrication of the inspection well.

[0004] However, the prefabricated well chamber of the prefabricated inspection well is an integrated structure with the bottom foundation. During construction, a foundation pit of the same size needs to be excavated to adapt to the size of the bottom foundation. The large amount of foundation excavation affects the construction speed. In addition, the sealing treatment of the inspection well pipe interface is difficult, and the construction is difficult.

[0005] Therefore, this application provides a simple prefabricated inspection well to meet the needs. Utility Model Content

[0006] In view of this, the purpose of this application is to provide a simple prefabricated inspection well, which can reduce the overall size of the inspection well through an adjustable position limit block, so as to reduce the amount of foundation pit excavation and increase the construction speed. At the same time, a sealing gasket is set at the pipe interface position to reduce the construction difficulty.

[0007] In order to solve the above technical problems, this application provides the following technical solutions:

[0008] A simple prefabricated inspection well comprises an outer cylinder body with a cylindrical structure having an open top and an inner cylinder body embedded in the outer cylinder body, wherein the inner wall of the outer cylinder body is spaced apart from the inner wall of the inner cylinder body, a connecting pipe is penetrated through the inner wall of the inner cylinder body, the other end of the connecting pipe penetrates through the side wall of the outer cylinder body, a sealing gasket is fitted on the inner wall of the connecting pipe, the outer wall of the inner cylinder body is provided with hollow reinforcing ribs, a limit block which can be moved away from the central axis of the outer cylinder body is penetrated through the outer wall of the outer cylinder body, an extrusion block is provided along the circumferential direction of the outer wall of the inner cylinder body, and the extrusion block comprises an inclined surface facing the limit block.

[0009] Preferably, the sealing gasket is in an "H" shape, and the sealing gasket is clamped in the inner cavity of the connecting pipe.

[0010] Preferably, an opening having the same size as the limit block is radially opened below the outer side wall of the outer cylinder, and the inner side wall of the outer cylinder is in contact with the reinforcing rib.

[0011] Preferably, a limiting protrusion is provided on one side edge of the top of the limiting block, and the limiting protrusion and the limiting block are in an orthogonal relationship.

[0012] Preferably, a support plate is sleeved on the top edge of the inner cylinder, and the outer diameter of the support plate is the same as the outer diameter of the outer cylinder.

[0013] Preferably, two reinforcing ribs are provided, and the two reinforcing ribs are evenly distributed on the outer side wall of the inner cylinder.

[0014] Preferably, a circular array of circular holes is provided on the surface of the reinforcing rib.

[0015] Preferably, a manhole cover is embedded in the top center of the inner cylinder.

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

[0017] In the above scheme, an outer cylinder, an inner cylinder, a limit block and an extrusion block are arranged, and the outer cylinder and the inner cylinder are nested with each other. They are made by a pre-fabrication and assembly process, and the outer cylinder together with the inner cylinder are placed in the foundation pit. During construction, a foundation pit of the same size as the outer cylinder can be excavated. The inner cylinder is rotated so that the inclined surface of the extrusion block squeezes the limit block, so that the limit block moves to the side away from the outer cylinder and is inserted into the soil on the side wall of the foundation pit, thereby achieving a stable support effect, thereby reducing the amount of foundation pit excavation and increasing the construction speed.

[0018] In the above scheme, a connecting tube and a sealing gasket are provided, a sealing gasket is provided on the inner wall of the connecting tube, a groove is provided in the middle of the outer peripheral surface of the sealing gasket, and the sealing gasket is clamped to the inside of the connecting tube through the groove, thereby ensuring the accuracy of the position between the sealing gasket and the connecting tube, so that it can provide a stable sealing effect, and at the same time, one end of the sealing gasket can abut against the inner wall of the outer cylinder, and at the same time, the inner wall of the sealing gasket can fit on the external pipe, thereby achieving a good sealing effect and reducing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 It is a schematic diagram of the overall structure in this application;

[0021] Figure 2 This is a schematic diagram of the inner cylinder structure in this application;

[0022] Figure 3 This is a schematic diagram of the extrusion block structure in this application;

[0023] Figure 4 This is a schematic diagram of the outer cylinder structure in this application;

[0024] Figure 5 This is a schematic diagram of the limit block structure in this application.

[0025] [reference numerals]

[0026] The outer cylinder 1 , the limiting block 101 , the limiting protrusion 1011 , the inner cylinder 2 , the reinforcing rib 201 , the extrusion block 202 , the support plate 203 , the well cover 204 , the connecting pipe 3 , and the sealing gasket 301 . DETAILED DESCRIPTION

[0027] like Figure 1 , Figure 2 , Figure 3 A simple prefabricated inspection well shown in the embodiment of the present application comprises an outer cylinder 1 of a cylindrical structure with an open top and an inner cylinder 2 embedded in the outer cylinder 1, the inner wall of the outer cylinder 1 and the inner wall of the inner cylinder 2 are arranged at intervals, a connecting pipe 3 is penetrated through the inner wall of the inner cylinder 2, the other end of the connecting pipe 3 penetrates the side wall of the outer cylinder 1, a sealing gasket 301 is attached to the inner wall of the connecting pipe 3, a hollow reinforcing rib 201 is provided on the outer wall of the inner cylinder 2, a limit block 101 that can move away from the central axis of the outer cylinder 1 is penetrated through the outer wall of the outer cylinder 1, an extrusion block 202 is provided along the circumferential direction of the outer wall of the inner cylinder 2, and the extrusion block 202 includes an inclined surface facing the limit block 101;

[0028] The outer cylinder 1 and the inner cylinder 2 are nested with each other and are made by a prefabrication and assembly process. During construction, a foundation pit of the same size as the outer cylinder 1 can be excavated, and the outer cylinder 1 together with the inner cylinder 2 are placed in the foundation pit. The inner cylinder 2 is rotated to make the inclined surface of the extrusion block 202 squeeze the limit block 101, so that the limit block 101 moves to the side away from the outer cylinder 1 and is inserted into the soil of the side wall of the foundation pit, which plays a role of stable support, thereby achieving the effect of reducing the amount of foundation pit excavation and improving the construction speed;

[0029] By arranging the sealing gasket 301 on the inner wall of the connecting pipe 3, one end of the sealing gasket 301 can abut against the inner wall of the outer cylinder 1, and the inner wall of the sealing gasket 301 can fit on the external pipe, thereby achieving a good sealing effect and reducing leakage.

[0030] In this embodiment, Figure 2-Figure 5 As shown: the sealing gasket 301 is in the shape of an "H", and the sealing gasket 301 is clamped in the inner cavity of the connecting pipe 3;

[0031] A groove is provided in the middle of the outer circumference of the sealing gasket 301 , and the sealing gasket 301 is clamped in the connecting pipe 3 through the groove, thereby ensuring the accuracy of the position between the sealing gasket 301 and the connecting pipe 3 , so that it can provide a stable sealing effect.

[0032] An opening having the same size as the limit block 101 is radially opened below the outer wall of the outer cylinder 1, and the inner wall of the outer cylinder 1 fits with the reinforcing rib 201;

[0033] The limit block 101 is limited by the opening on the outer wall of the outer cylinder 1 to avoid the deflection of the limit block 101, and the limit block 101 is kept parallel to the bottom surface of the foundation pit to fully utilize the supporting force provided by the limit block 101 to prevent the inspection well from sinking.

[0034] A limiting protrusion 1011 is provided on one edge of the top of the limiting block 101, and the limiting protrusion 1011 and the limiting block 101 are orthogonal to each other;

[0035] The limit block 101 is squeezed by the extrusion block 202 and slides out of the through hole on the side wall of the outer cylinder 1. The limit protrusion 1011 can fit the inner wall position of the outer cylinder 1 to prevent it from falling off, while increasing the contact area to better disperse the lateral pressure and extend the service life of the inspection well.

[0036] A support plate 203 is sleeved on the top edge of the inner cylinder 2, and the outer diameter of the support plate 203 is the same as the outer diameter of the outer cylinder 1;

[0037] The support plate 203 is sealed on the top opening of the outer cylinder 1 to reduce the intrusion of moisture and foreign matter. The inner cylinder 2 is limited by the support plate 203 to keep the top surface clean and flat.

[0038] There are two reinforcing ribs 201, which are evenly distributed on the outer wall of the inner cylinder 2;

[0039] The reinforcing rib 201 fits the inner wall of the outer cylinder 1, and can well support the outer cylinder 1, avoiding the outer cylinder 1 from being deformed due to lateral pressure, and at the same time improves the structural strength of the inner cylinder 2, ensuring that the outer cylinder 1 and the inner cylinder 2 are in a coaxial state.

[0040] The surface of the reinforcing rib 201 is provided with circular holes in an annular array;

[0041] The circular holes on the surface of the reinforcing rib 201 are used for drainage to prevent moisture from accumulating for a long time at the connection between the outer cylinder 1 and the inner cylinder 2. When the inspection well is used in a high-pressure environment, concrete can be injected into the cavity between the outer cylinder 1 and the inner cylinder 2. The through holes on the surface of the reinforcing rib 201 allow the concrete to be cast in one go, thereby improving the overall flexibility of the inspection well.

[0042] A manhole cover 204 is embedded in the center of the top of the inner cylinder 2;

[0043] The manhole cover 204 is matched with the inner cylinder 2 to keep the top surface of the inner cylinder 2 flat and prevent foreign objects from falling into the inner cylinder 2.

Claims

1. A simple prefabricated inspection well, It is characterized in that The invention comprises an outer cylinder (1) of a cylindrical structure with an open top, and an inner cylinder (2) embedded in the outer cylinder (1), wherein the inner wall of the outer cylinder (1) and the inner wall of the inner cylinder (2) are arranged at a distance, a connecting pipe (3) is provided through the inner wall of the inner cylinder (2), the other end of the connecting pipe (3) passes through the side wall of the outer cylinder (1), a sealing gasket (301) is attached to the inner wall of the connecting pipe (3), a hollow reinforcing rib (201) is provided on the outer wall of the inner cylinder (2), a limit block (101) movable away from the central axis of the outer cylinder (1) is provided through the outer wall of the outer cylinder (1), and an extrusion block (202) is provided along the circumferential direction of the outer wall of the inner cylinder (2), and the extrusion block (202) comprises an inclined surface facing the limit block (101).

2. The simple prefabricated inspection well according to claim 1, Features: The sealing gasket (301) is in an "H" shape and is snap-connected to the inner cavity of the connecting pipe (3).

3. The simple prefabricated inspection well according to claim 1, Features: An opening having the same size as the limit block (101) is radially opened below the outer wall of the outer cylinder (1), and the inner wall of the outer cylinder (1) is in contact with the reinforcing rib (201).

4. The simple prefabricated inspection well according to claim 1, Features: A limiting protrusion (1011) is provided on one side edge of the top of the limiting block (101), and the limiting protrusion (1011) and the limiting block (101) are in an orthogonal relationship.

5. The simple prefabricated inspection well according to claim 1, Features: A support plate (203) is sleeved on the top edge of the inner cylinder (2), and the outer diameter of the support plate (203) is the same as the outer diameter of the outer cylinder (1).

6. The simple prefabricated inspection well according to claim 1, Features: A total of two reinforcing ribs (201) are provided, and the two reinforcing ribs (201) are evenly distributed on the outer side wall of the inner cylinder (2).

7. The simple prefabricated inspection well according to claim 6, Features: The surface of the reinforcing rib (201) is provided with circular holes in an annular array.

8. The simple prefabricated inspection well according to claim 1, Features: A manhole cover (204) is embedded in the center of the top of the inner cylinder (2).

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