Pipe connection structure for municipal works

Abstract

The utility model discloses a pipeline connecting structure for municipal engineering, including well body prefabricated pipe, the middle part of well body prefabricated pipe is provided with pipeline connecting section, the middle part of pipeline connecting section is provided with connecting cylinder, the one end of connecting cylinder is provided with pipeline main part away from pipeline connecting section, the both sides of pipeline main part and the end of connecting cylinder are provided with pipeline flange, the inside rubber pad is arranged between two pipeline flanges of pipeline main part and connecting cylinder, the outside rubber cover is arranged on the outside of two pipeline flanges of pipeline main part and connecting cylinder, the outside of outside rubber cover is provided with cement outer hoop. The utility model is provided with cement outer hoop, cooperates inside rubber pad and outside rubber cover, can satisfy the pipeline connection sealing requirement at the same time, can make pipeline main part and the joint of connecting cylinder have certain axial movement space through the deformation of inside rubber pad and outside rubber cover, reduces the influence that thermal expansion and cold shrink bring to pipeline.

Description

Technical Field

[0001] This utility model relates to the field of pipeline laying technology, and in particular to pipeline connection structures for municipal engineering. Background Technology

[0002] Urban drainage systems are municipal engineering facilities that treat and remove urban sewage and rainwater. They are an important component of urban public utilities, promptly removing rainwater from urban surfaces to provide industrial and domestic water, while also preventing urban water pollution. Because cement is chemically stable and not easily corroded by acids, alkalis, or oxidants, it can be used for extended periods in environments containing corrosive substances.

[0003] Considering pipeline cost and lifespan, most existing large-scale municipal drainage pipelines are precast cement pipes. They also require the installation of numerous manholes and inspection wells connected to the pipelines. Therefore, the connection structure between pipelines and manholes in municipal engineering construction is typically achieved by directly casting cement along with the manhole body at the pipeline end using a mold. The connection area is then filled with cement mortar, allowing the pipeline to be directly inserted and fixed into the manhole. While this method has lower structural costs, the molds are generally temporary, resulting in a long construction period and a large workload for formwork. Furthermore, vibration is required after filling the mortar to remove air bubbles, but this makes it difficult to insert a vibrator at the bottom of the pipeline, potentially leaving air bubbles at the bottom after cement hardening, reducing cement strength. Additionally, the demolding process is extensive, indicating room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a pipe connection structure for municipal engineering, thereby solving the above-mentioned problem.

[0005] To achieve the above objectives, a pipe connection structure for municipal engineering is provided, including a precast manhole pipe, a pipe connection section in the middle of the precast manhole pipe, a connecting cylinder in the middle of the pipe connection section, a pipe body at the end of the connecting cylinder away from the pipe connection section, pipe flanges on the outer sides of both the pipe body and the connecting cylinder, an inner rubber gasket between the two pipe flanges of the pipe body and the connecting cylinder, an outer rubber sleeve on the outer side of the two pipe flanges of the pipe body and the connecting cylinder, and a cement outer hoop on the outer side of the outer rubber sleeve.

[0006] A casting mold is provided on the outside of the cement outer hoop, and steel wire ropes are provided on both sides of the inside of the cement outer hoop. Steel wire connecting blocks are fixedly connected to both ends of the two steel wire ropes, and multiple transverse connecting rods are provided at equal intervals inside the cement outer hoop.

[0007] According to the aforementioned municipal engineering pipeline connection structure, the casting mold includes two semi-ring molds, hinge seats, casting grooves, fixing bolts, and a demolding layer. The bottom of the two semi-ring molds is provided with hinge seats, and they are hinged to each other through the hinge seats. The top of the two semi-ring molds is provided with casting grooves, and fixing bolts are provided on both sides of the casting grooves. A demolding layer is provided between the cement outer hoop and the inner side of the semi-ring mold.

[0008] According to the aforementioned municipal engineering pipeline connection structure, bolt hanging holes are provided above the four steel wire connecting blocks, and the positions of the four steel wire connecting blocks correspond to the positions of the two fixing bolts respectively.

[0009] According to the aforementioned municipal engineering pipeline connection structure, the two ends of the plurality of transverse connecting rods are respectively fixedly connected to corresponding steel wire ropes.

[0010] According to the aforementioned municipal engineering pipeline connection structure, the release layer is an existing plastic woven bag fabric layer, which can be directly cut from waste cement bags on site, resulting in low raw material costs.

[0011] According to the aforementioned municipal engineering pipeline connection structure, one half-ring mold is rotatably connected to one end of the two fixing bolts, and the other half-ring mold is threadedly connected to the other half-ring mold.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. This utility model is equipped with a cement outer hoop, which, together with an inner rubber pad and an outer rubber sleeve, can meet the sealing requirements of the pipeline connection. At the same time, the deformation of the inner rubber pad and the outer rubber sleeve can provide a certain axial movement space at the joint between the pipeline body and the connecting cylinder, reducing the impact of thermal expansion and contraction on the pipeline. Meanwhile, the two steel wire ropes inside the cement outer hoop, together with the transverse connecting rod, can form a reinforcing rib structure inside the cement outer hoop, which can significantly improve the tensile strength of the cement outer hoop. Moreover, during mortar vibration, the vibration can be directly transmitted to the cement outer hoop by pressing the vibrator against the steel wire rope, thus avoiding air bubbles after the cement at the bottom of the pipeline solidifies, and enhancing the practicality of the device.

[0014] 2. This utility model is equipped with a casting mold, which can be fixed by fixing bolts. After the cement solidifies, the two semi-ring molds can be opened by rotating the fixing bolts through a pneumatic screw tightening machine. With the help of the demolding layer inside, the operation is simple, the demolding difficulty is reduced, and the practicality of the device is enhanced.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a three-dimensional structural diagram of the pipeline connection structure for municipal engineering of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the pipeline connection structure for municipal engineering of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure of the pipeline connection structure for municipal engineering of this utility model.

[0020] Legend:

[0021] 1. Precast well casing; 2. Pipe connection section; 3. Connecting cylinder; 4. Pipe body; 5. Pipe flange; 6. Cement outer hoop; 7. Casting mold; 8. Steel wire rope; 9. Steel wire connecting block; 10. Inner rubber pad; 11. Outer rubber sleeve; 12. Horizontal connecting rod; 71. Semi-ring mold; 72. Hinge seat; 73. Casting groove; 74. Fixing bolt; 75. Demolding layer. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-3 This utility model provides a pipeline connection structure for municipal engineering, including a precast manhole pipe 1, a pipeline connection section 2 in the middle of the precast manhole pipe 1, a connecting cylinder 3 in the middle of the pipeline connection section 2, a pipeline body 4 at the end of the connecting cylinder 3 away from the pipeline connection section 2, pipeline flanges 5 on the outer sides of both the pipeline body 4 and the connecting cylinder 3, an inner rubber pad 10 between the two pipeline flanges 5 and an outer rubber sleeve 11 on the outer sides of the two pipeline flanges 5, and a cement outer hoop 6 on the outer side of the outer rubber sleeve 11. While meeting the pipeline connection sealing requirements, the deformation of the inner rubber pad 10 and the outer rubber sleeve 11 allows for a certain axial movement space at the joint between the pipeline body 4 and the connecting cylinder 3, reducing the impact of thermal expansion and contraction on the pipeline.

[0024] A casting mold 7 is provided on the outer side of the cement outer hoop 6. The casting mold 7 includes two semi-ring molds 71, a hinge seat 72, a casting groove 73, fixing bolts 74, and a demolding layer 75. The bottom of the two semi-ring molds 71 ​​is provided with a hinge seat 72, and they are hinged to each other through the hinge seat 72. The top of each of the two semi-ring molds 71 ​​is provided with a casting groove 73. Fixing bolts 74 are provided on both sides of the casting groove 73. One end of the two fixing bolts 74 is rotatably connected to one of the semi-ring molds 71, and the other end of the two fixing bolts 74 is threadedly connected to the other semi-ring mold 71. A demolding layer 75 is provided between the cement outer hoop 6 and the inner side of the semi-ring mold 71. The demolding layer 75 is the existing plastic woven bag fabric layer, which is used for initial sealing and to facilitate subsequent demolding.

[0025] Steel wire ropes 8 are installed on both sides of the inner side of the cement outer hoop 6. Steel wire connecting blocks 9 are fixedly connected to both ends of the two steel wire ropes 8. Bolt hanging holes are provided above the four steel wire connecting blocks 9. The positions of the four steel wire connecting blocks 9 correspond to the positions of the two fixing bolts 74. Multiple transverse connecting rods 12 are equidistantly arranged inside the cement outer hoop 6. The two ends of the multiple transverse connecting rods 12 are fixedly connected to the corresponding steel wire ropes 8. This can form a reinforcing rib structure inside the cement outer hoop 6, which greatly improves the tensile strength of the cement outer hoop 6. Moreover, when the mortar is vibrated, the vibration can be directly transmitted to the bottom of the cement outer hoop 6 by pressing the vibrator against the steel wire ropes 8, which reduces the occurrence of air bubbles after the cement at the bottom of the pipe solidifies.

[0026] Working principle: In use, this utility model, by setting a cement outer hoop 6 on the outside of the pipe body 4 and the connecting cylinder 3, in conjunction with the inner rubber gasket 10 and the outer rubber sleeve 11, can meet the pipe connection sealing requirements. At the same time, the deformation of the inner rubber gasket 10 and the outer rubber sleeve 11 can provide a certain axial movement space at the joint between the pipe body 4 and the connecting cylinder 3, reducing the impact of thermal expansion and contraction on the pipe. Meanwhile, the two steel wire ropes 8 set inside the cement outer hoop 6, in conjunction with the transverse connecting rod 12, can form a reinforcing rib structure inside the cement outer hoop 6, which can greatly improve the tensile strength of the cement outer hoop 6. Moreover, when the mortar is vibrated, the vibration can be directly transmitted to the bottom of the cement outer hoop 6 by pressing the vibrator against the steel wire ropes 8, thereby reducing the occurrence of air bubbles after the cement at the bottom of the pipe solidifies.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pipe connection structure for municipal works, comprising a shaft precast pipe (1), characterized in that: The precast pipe (1) of the well body is provided with a pipe connection section (2) in the middle, and a connecting cylinder (3) is provided in the middle of the pipe connection section (2). A pipe body (4) is provided at the end of the connecting cylinder (3) away from the pipe connection section (2). Pipe flanges (5) are provided on the outer sides of the ends of the pipe body (4) and the connecting cylinder (3). An inner rubber pad (10) is provided between the two pipe flanges (5) of the pipe body (4) and the connecting cylinder (3). An outer rubber sleeve (11) is provided on the outer side of the two pipe flanges (5) of the pipe body (4) and the connecting cylinder (3). A cement outer hoop (6) is provided on the outer side of the outer rubber sleeve (11). The outer side of the cement hoop (6) is provided with a casting mold (7), and steel wire ropes (8) are provided on both sides of the inner side of the cement hoop (6). Steel wire connecting blocks (9) are fixedly connected to both ends of the two steel wire ropes (8). Multiple transverse connecting rods (12) are provided at equal intervals inside the cement hoop (6).

2. The pipe joint structure for municipal works according to claim 1, wherein The casting mold (7) includes two semi-ring molds (71), hinge seats (72), casting grooves (73), fixing bolts (74), and a demolding layer (75). The bottom of the two semi-ring molds (71) is provided with hinge seats (72), and they are hinged to each other through the hinge seats (72). The top of the two semi-ring molds (71) is provided with casting grooves (73), and fixing bolts (74) are provided on both sides of the casting grooves (73). A demolding layer (75) is provided between the cement outer hoop (6) and the inner side of the semi-ring molds (71).

3. The pipe joint structure for municipal works according to claim 2, wherein Each of the four wire connecting blocks (9) has a bolt hanging hole on its top, and the positions of the four wire connecting blocks (9) correspond to the positions of the two fixing bolts (74).

4. The pipe joint structure for municipal works according to claim 1, wherein Both ends of the plurality of transverse connecting rods (12) are respectively fixedly connected to the corresponding wire ropes (8).

5. The pipe joint structure for municipal works according to claim 2, wherein The release layer (75) is an existing plastic woven bag fabric layer.

6. The pipe joint structure for municipal works according to claim 2, wherein One end of the two fixing bolts (74) is rotatably connected to one of the semi-circular molds (71), and the other end of the two fixing bolts (74) is threadedly connected to the other semi-circular mold (71).

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