CN207452948U - The inspection shaft of adjustable manhole cover height - Google Patents

Abstract

The utility model relates to an inspection well with an adjustable well cover height, which belongs to the technical field of building and municipal engineering construction. The inspection well includes a shaft, an enlarged cover plate, a movable base, a well ring and a well cover. Several steel rods are pre-embedded in the enlarged cover plate, and external threads are provided on the outer wall of the movable base. The steel rods One end protrudes from the enlarged cover plate and is supported in the groove of the external thread of the movable base, and the movable base is supported on the steel rod through the external thread, and uneven settlement on the road surface causes the pit head of the inspection well to sag or bulge When rotating the movable base, the external thread is screwed up or down relative to the steel rod, thereby raising or lowering the well circle and the well cover, so that the height of the well cover is consistent with the road surface, which has the advantages of simple structure and convenient operation, and greatly The later maintenance cost of the inspection well is reduced.

Description

Inspection well with adjustable manhole cover height

technical field

The utility model relates to an inspection well with an adjustable well cover height, which belongs to the technical field of building and municipal engineering construction.

Background technique

The urban road inspection well is a well-shaped structure located on the underground main pipeline of municipal engineering. With the development of urbanization in my country, various pipelines in the construction of municipal infrastructure have changed from traditional overhead laying to underground burial. The number of inspection wells on the road surface is increasing.

From the point of view of its structure, the junction of the inspection well and the road surface is usually composed of a base, a well ring, a well cover and the surrounding road surface.

However, in actual operation, there are often recesses or protrusions at the head of the inspection well, which endangers driving safety and increases the cost of road maintenance in the later period.

Utility model content

Aiming at the problem that the well head is sunken or raised during the operation of the inspection well, which will endanger the driving safety and increase the cost of road maintenance in the later stage, the utility model provides an inspection well with adjustable manhole cover height, including the wellbore, the enlarged cover plate, Movable base, well ring and well cover, several steel rods are pre-embedded in the enlarged cover plate, external threads are arranged on the outer wall of the movable base, and one end of the steel rod protrudes from the enlarged cover plate and is supported on In the groove of the external thread of the movable base, the movable base is supported on the steel rod through the external thread. When the uneven settlement of the road surface causes the well head of the inspection well to sag or protrude, the movable base is rotated, and the external thread is relatively The steel rod is screwed up or down to raise or lower the well ring and the well cover, so that the height of the well cover is consistent with the road surface. It has the advantages of simple structure and convenient operation, and greatly reduces the later maintenance cost of the inspection well.

In order to solve the above technical problems, the utility model includes the following technical solutions:

An inspection well with an adjustable height of the well cover, including a shaft, an enlarged cover plate, a movable base, a well ring and a well cover, the movable base is cylindrical and the outer wall is provided with external threads; the enlarged cover plate is consolidated On the top of the well shaft, a circular hole for accommodating the movable base is arranged on the enlarged cover plate, and several steel rods are pre-embedded in the enlarged cover plate, and the diameter of the steel rods is smaller than that of the external thread. pitch, one end of the steel rod protrudes from the enlarged cover plate and is supported in the groove of the external thread of the movable base.

Preferably, there are 6 steel rods, which are evenly distributed on the same horizontal plane of the enlarged cover plate at equal angles.

Preferably, the external thread of the movable base is a rectangular thread or a trapezoidal thread.

Preferably, the outer diameter of the well collar is larger than the outer diameter of the outer thread of the movable base, and the inner diameter of the well collar is equal to the inner diameter of the movable base.

Preferably, the upper surface of the manhole cover is flush with the upper surface of the well circle and is flush with the road surface.

Preferably, the lower edge of the well cover has a rounded structure, and the joint between the movable base and the well cover has a rounded structure.

Preferably, the well ring is provided with a pair of grooves for accommodating the rotary rod.

Compared with the prior art, the utility model has the following advantages and positive effects due to the adoption of the above technical scheme:

(1) The movable base is supported on the steel rod through the external thread. When the uneven settlement of the road surface causes the wellhead of the inspection well to sag or bulge, the movable base is rotated, and the external thread is screwed upward or downward relative to the steel rod, so that Raise or lower the well circle and the well cover, so that the height of the well cover and the road surface is consistent, which has the advantages of simple structure and convenient operation, and greatly reduces the maintenance cost of the inspection well in the later stage;

(2) The lower edge of the manhole cover is a rounded structure, which is used to disperse the traffic load transmitted from the manhole cover to the movable base, and avoid shortening the service life of the structure due to the stress concentration caused by the right-angle contact structure. Correspondingly, the movable base is equipped with Matching rounded corner structure;

(3) A pair of grooves are arranged on the well ring, and when the rotating rod is put in the groove, the movable base can be rotated conveniently by rotating the rotating rod.

Description of drawings

Fig. 1 is a schematic structural view of an inspection well with an adjustable manhole cover height provided by an embodiment of the present invention;

Fig. 2 is a sectional view along A-A in Fig. 1;

Fig. 3 is a top view of the well circle in an embodiment of the present invention.

The numbers in the figure are as follows:

Inspection well 100; shaft 110; enlarged cover plate 120; steel rod 121; movable base 130; external thread 131; well ring 140; groove 141;

Detailed ways

The inspection well with adjustable manhole cover height provided by the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the present utility model will be more clear in conjunction with the following description and claims. It should be noted that all the drawings are in very simplified form and use inaccurate scales, which are only used to facilitate and clearly illustrate the purpose of the embodiment of the present utility model.

Please refer to Fig. 1, a kind of inspection well 100 of adjustable manhole cover height provided in this embodiment, comprises wellbore 110, enlarged cover plate 120, movable base 130, well ring 140 and well cover 150, and movable base 130 is cylindrical , the outer wall of the movable base 130 is provided with an external thread 131; the enlarged cover 120 is consolidated on the top of the shaft 110, and the enlarged cover 120 is provided with a circular hole for accommodating the movable base 130, and the enlarged cover 120 is pre-embedded A plurality of steel rods 121 , the diameter of the steel rods 121 is smaller than the pitch of the external thread 131 , and one end of the steel rods 121 protrudes from the enlarged cover plate 120 and is supported in the groove of the external thread 131 of the movable base 130 .

The wellbore 110 can be in the form of on-site brickwork, concrete cast-in-place, or factory prefabrication.

The enlarged cover plate 120 can be cast on site or prefabricated in a factory, the cross section is circular, and the inner diameter is larger than the outer diameter of the movable base 130 . Steel rods 121 are pre-embedded in the enlarged cover plate 120. Preferably, as shown in FIG.

The movable base 130 can choose cylindrical cast iron, and the external thread 131 is arranged on the outer wall. Preferably, the external thread 131 is a rectangular thread or a trapezoidal thread, that is, the thread of the external thread 131 is rectangular or trapezoidal, which can improve the bearing capacity of the external thread 131. force. Wherein, the outwardly protruding part of the external thread 131 is a screw thread, the gap between two screw teeth is a groove, and the distance between two screw teeth is a thread pitch.

The well collar 140 is used to support the well cover 150, and the well collar 140 is fixed on the movable base 130. Preferably, the well collar 140 and the movable base 130 are integrally structured. Preferably, the lower edge of the manhole cover 150 has a rounded structure, and the movable base 130 is provided with a matching rounded corner structure. Such a setting can disperse the traffic load transmitted from the manhole cover 150 to the movable base 130, and avoid contact due to right angles. The resulting stress concentration shortens the service life of the structure.

The well cover 150 rests in the well circle 140 , and the top is flush with the top of the well circle 140 and the road surface 200 .

Compared with the prior art, the inspection well 100 with adjustable manhole cover height in the utility model has the following advantages: the movable base 130 is supported on the steel rod 121 through the external thread 131, and the movable base 130 is rotated, and the external thread 131 is relatively The steel rod 121 is screwed upwards or downwards, thereby raising or lowering the height of the well ring 140 and the well cover 150. When the uneven settlement of the road surface 200 causes the well head of the inspection well 100 to sag or bulge, it can be done by rotating the movable base 130 Keeping the height of the well cover 150 consistent with the road surface 200 greatly reduces the later maintenance cost of the inspection well 100 .

In order to facilitate the rotation of the movable base 130, preferably, as shown in Figure 3, a pair of grooves 141 are provided on the well circle 140, and when the rotating rod 142 is placed in the groove 141, by rotating the rotating rod 142, it can be easily The movable base 130 is rotated. Wherein, the rotating rod 142 can adopt a steel rod.

Preferably, the outer diameter of the well collar 140 is greater than the outer diameter of the external thread 131 of the movable base 130, and the well collar 140 can protect the external thread 131; the inner diameter of the well collar 140 is equal to the inner diameter of the movable base 130, which can make the well collar 140 has a flush inner surface with the movable base 130 .

The above description is only a description of the preferred embodiments of the present utility model, and is not any limitation to the scope of the present utility model. Any changes and modifications made by those of ordinary skill in the field of the utility model according to the above disclosures all belong to the protection scope of the claims .

Claims (7)

1. a kind of inspection shaft of adjustable manhole cover height, which is characterized in that including pit shaft, expand cover board, movable base, walling crib and Well lid, the movable base are to be provided with external screw thread on cylindric and outer wall；The top for expanding cover board and being fixedly arranged at the pit shaft Portion, described expand are provided with the circular hole for accommodating the movable base on cover board, pre-buried several rod irons in the expansion cover board, The diameter of the rod iron is less than the externally threaded screw pitch, and one end of the rod iron is stretched out the expansion cover board and is supported on described In the externally threaded groove of movable base.

2. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the rod iron is 6, angularly It is distributed in the same level of the expansion cover board.

3. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the external screw thread of the movable base For rectangular thread or trapezoidal thread.

4. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the outer diameter of the walling crib is more than institute The externally threaded outer diameter of movable base is stated, the internal diameter of the walling crib is equal to the internal diameter of the movable base.

5. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the upper surface of the well lid and institute It is concordant and concordant with road surface to state walling crib upper surface.

6. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that the lower edge of the well lid is fillet The junction of structure, the movable base and the well lid is rounding corner structure.

7. the inspection shaft of adjustable manhole cover height as described in claim 1, which is characterized in that be provided with a pair in the walling crib Accommodate the groove of swing arm.