CN212063431U

CN212063431U - Prefabricated cable pit of socket joint connection

Info

Publication number: CN212063431U
Application number: CN202020583999.8U
Authority: CN
Inventors: 唐榕
Original assignee: PowerChina Guiyang Engineering Corp Ltd
Current assignee: PowerChina Guiyang Engineering Corp Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-12-01
Anticipated expiration: 2030-04-16

Abstract

The utility model discloses a socket joint connection prefabricated cable trench, which is formed by connecting a group of tubular prefabricated parts; the tubular prefabricated member is connected with the tubular prefabricated member in a socket mode through a socket joint (2) and a bell joint (3); the socket joint of the socket joint (2) and the bell-and-spigot joint (3) adopts a sealing ring (4) for flexible insertion. The utility model discloses the method of customization prefab field assembly has replaced cast in situ or brick technique. The procedures of on-site formwork erecting, steel bar binding, pouring, concrete curing and the like are omitted, and the construction period is reduced to a great extent. During assembly, the cable trench is flexibly connected through the socket type sealing ring, so that the sealing performance and the performances of resisting foundation settlement, inclination and the like of the cable trench are improved, and the use safety of the cable trench is ensured. Is favorable for safe and civilized construction and environmental protection.

Description

Prefabricated cable pit of socket joint connection

Technical Field

The utility model relates to a prefabricated cable pit of socket joint connection belongs to cable laying technical field.

Background

The existing commonly used cable trench type comprises brick laying, cast-in-place cable trench and other types, the brick laying and cast-in-place cable trench has various field construction operation procedures, long construction period, large resource consumption, relatively more potential safety hazards, increased management difficulty and is not beneficial to development of safe and civilized construction. In addition, the brick cable trench has high technological requirements for brick plastering, so that the plastering quality is generally low, and common quality problems easily occur; the cast-in-place cable trench has the defects that the formwork is difficult to support, the flatness of the concrete surface of the trench body is difficult to ensure, and the like. Because the two cable ducts have the defects of high resource consumption, high time cost, multiple field wet operation procedures, long construction period and difficult guarantee of safe and civilized construction, the development requirements of power engineering under certain specific conditions cannot be met. At present, some prefabricated cable ducts are small in floor area and narrow in width, so that the overall stability is poor, and the problems of inclination, settlement, deformation and the like frequently occur due to foundation change. Especially, the self anti-inclination capability is insufficient, and the problems are more serious in the sections near rivers, construction excavation and the like, namely the sections with large underground soil flow. Due to foundation change, the bottom surface of the cable trench used soon is uneven and accumulated with water, which is also the current cable trench common fault. Therefore, the prior art has shortcomings and needs to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prefabricated cable pit of socket joint connection to solve current cable pit construction operation procedure numerous, the period is long, and the resource expends great, and the potential safety hazard is more relatively, and the management degree of difficulty increases, is unfavorable for the technical problem who develops of safe civilized construction, thereby overcomes the not enough of prior art existence.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a prefabricated cable trench connected in a socket mode is characterized in that finished prefabricated cable trench prefabricated parts are connected in a socket mode through socket joints and socket joints; the socket joint of the socket joint and the bell joint is flexibly inserted by a sealing ring.

In the prefabricated cable trench connected in a socket joint manner, a prefabricated part finished product takes a straight standard prefabricated part as a main part, a cross-shaped four-way prefabricated part or a T-shaped three-way prefabricated part is arranged at a required branch, and an elbow prefabricated part is arranged at a required turning position; all the tubular prefabricated members adopt customized parts of a professional prefabricating factory.

In the prefabricated cable trench connected in a socket mode, the tops of the cross-shaped four-way prefabricated part, the T-shaped three-way prefabricated part and part of the linear standard prefabricated part are provided with access holes as required; the access hole is a step hole, the access hole is provided with a cover plate, and concrete is laid on the cover plate and the step of the access hole.

In the prefabricated cable trench connected in a socket mode, one end of the linear standard prefabricated part is a socket joint, and the other end of the linear standard prefabricated part is a socket joint; the cross-shaped four-way prefabricated member and the T-shaped three-way prefabricated member are uniformly arranged into a socket joint or a spigot joint according to requirements.

In the prefabricated cable trench of aforementioned socket joint connection, the bellmouth connects for easy to assemble and strengthens sealed effect, carries out the fillet processing with prefabricated cable trench profile rectangle four corners and forms the interior horn mouth form of osculum.

In the prefabricated cable trench connected in a socket joint manner, the sealing ring is positioned in a cavity between the socket joint outer ring and the socket joint inner ring.

In the prefabricated cable trench connected in a socket joint mode, embedded parts are arranged on the inner walls of the two sides of the tubular prefabricated part and are uniformly distributed along the length direction of the rectangular cylinder; and a cable support is fixed on the embedded part.

In the prefabricated cable trench connected in a socket joint mode, the embedded part is an embedded bolt or an embedded steel plate; the cable support is fixedly connected with the embedded bolt through a nut; or the cable support is welded with the embedded steel plate.

In the prefabricated cable trench of aforementioned socket joint connection, sand and soil leveling layer has been laid to prefabricated cable trench bottom.

Since the technical scheme is used, the utility model discloses compare with prior art, the utility model discloses a cable pit adopts the method by the field assembly of the prefabricated prefab of professional prefabrication factory customization, has replaced prior art cast in situ or brick technique. During field installation, after foundation pit excavation and necessary foundation treatment, a sand soil leveling layer is padded on the bottom layer, and then the cable trench can be paved. The procedures of formwork erecting, steel bar binding, pouring, concrete curing and the like are omitted, and the construction period is reduced to a great extent. Because the customized prefabricated member is completed by adopting standardized production in a professional factory, the construction quality of the cable trench is ensured, the joint of the cable trench adopts socket joint type flexible connection, the requirements of the cable trench on the bearing capacity and stability of a foundation are reduced to a certain extent, the performances of resisting the foundation settlement, inclination and the like of the cable trench can be improved, meanwhile, the flexible connection adopts rubber ring sealing connection, the sealing performance of the joint can be greatly improved, the water permeability of the joint can be reduced, and the use safety of the cable trench is ensured. Is favorable for safe and civilized construction and environmental protection.

Drawings

FIG. 1 is a schematic view of the joining of in-line standard preforms;

FIG. 2 is a schematic structural view of a cross-shaped four-way preform.

The figures are labeled as follows: the prefabricated component comprises 1-a straight standard prefabricated component, 2-a socket joint, 3-a socket joint, 4-a sealing ring, 5-a sandy soil leveling layer, 6-an access hole, 7-concrete, 8-a cover plate, 9-an embedded part, 10-a cable support and 11-a cross-shaped four-way prefabricated component.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The utility model relates to a socket-joint prefabricated cable trench, as shown in figures 1 and 2, the prefabricated cable trench is formed by connecting a group of tubular prefabricated parts; the tubular prefabricated member is connected with the tubular prefabricated member in a socket mode through a socket joint 2 and a bell joint 3; the socket joint of the socket joint 2 and the bell-and-spigot joint 3 is flexibly inserted by a seal ring 4. The tubular prefabricated member takes a linear standard prefabricated member 1 as a main part, a cross-shaped four-way prefabricated member 11 or a T-shaped three-way prefabricated member is arranged at a required branch, and an elbow prefabricated member is arranged at a required turning position; all the tubular prefabricated members adopt customized parts of a professional prefabricating factory. The cross-shaped four-way prefabricated part 11, the T-shaped three-way prefabricated part and part of the linear standard prefabricated part 1 are provided with access holes 6 as required; the access hole 6 is a step hole, the access hole 6 is provided with a cover plate 8, and concrete 7 is laid at the step of the cover plate 8 and the access hole 6. The cross section of the tubular prefabricated part is rectangular, and the pipe orifices of the tubular prefabricated part are provided with rectangular annular gaps; the annular gap at one end of the linear standard prefabricated member 1 is fixedly connected with the socket joint 2, and the annular gap at the other end of the linear standard prefabricated member 1 is fixedly connected with the socket joint 3; the cross-shaped four-way prefabricated member and the T-shaped three-way prefabricated member are uniformly arranged into a socket joint or a spigot joint according to requirements. The socket joint (3) is convenient to install and strengthens the sealing effect, and four corners of the rectangular outline of the prefabricated cable trench are chamfered to form an inner horn mouth shape with a small opening. The socket joint 2 is formed by connecting two sections of rectangular pipes with different calibers, and an inner step and an outer step are formed at the connecting position; the large-caliber end of the socket joint 2 is sleeved on the annular gap of the port of the prefabricated member, and the large-caliber end of the socket joint 2 is spliced with the socket joint 3. The sealing ring 4 is positioned in a cavity between the outer ring of the spigot joint 2 and the inner ring of the socket joint 3. The inner walls of two sides of the tubular prefabricated part are respectively provided with an embedded part 9, and the embedded parts 9 are uniformly distributed along the length direction of the rectangular cylinder; and a cable bracket 10 is fixed on the embedded part 9. The embedded part 9 adopts an embedded bolt or an embedded steel plate; the cable support 10 is fixedly connected with the embedded bolt through a nut; or the cable support 10 is welded with the embedded steel plate. And a sand and soil leveling layer 5 is laid at the bottom of the prefabricated cable trench.

To the supplementary explanation of the utility model: fig. 1 and 2 only show two structural forms of a straight standard preform 1 and a cross-shaped four-way preform 11. According to the structure and the principle of the utility model, different structures such as 90-degree horizontal elbows, upward or downward 45-degree elbows and the like can also be manufactured. All of the above are within the scope of the present application. For convenience of description, all customized prefabricated cable trenches are hereinafter collectively referred to as a prefabricated member.

In practice, all the prefabricated parts for the cable trench are assembled by using standard prefabricated parts customized by a professional factory. The spigot joint 2 and the socket joint 3 are both ball-milling cast iron parts, and can also be directly formed by pouring concrete when prefabricated parts are manufactured. The sealing ring is made of rubber sealing ring or cotton-flax sealing material. The preform length can be tailored to the desired length, typically using a 3.2m or 4.0m gauge. When the socket joint 2 is installed on site, the socket joint 3 is directly inserted into the socket joint 2, and a cavity between the socket joint 2 and the socket joint 3 is filled with a sealing material such as cotton and hemp or sealed by a sealing ring. For easy to assemble and strengthen the sealing effect, carry out the fillet with prefab outline rectangle four corners and handle, supporting sealing washer also carries out the manufacturing that corresponds size shape, alright accomplish the installation in filling the space with the sealing washer after accomplishing socket joint butt joint. The prefab can be as required at open-top as access hole 6, and 50 mm's recess is reserved at access hole 6 and is convenient for place apron 8 to in the cast-in-place concrete 7 of certain height of groove top surface makes 8 top surfaces of apron and prefab top surface parallel and level, and access hole 6 can be rectangle or circular, and rectangle length of side should not be less than 0.6m, and circular access hole diameter should not be less than 0.8 m. The two side walls in the rectangular pipe of the prefabricated member are embedded with embedded parts 9 for fixing the cable support 10, and the embedded parts 9 can be embedded bolts or embedded steel plates. The cable support 10 is fixedly connected with the embedded bolt through a nut or connected with the embedded steel plate through a welding mode. The cable support 10 is an angle steel welding part, and due to the fact that the using amount of the cable support 10 is large, the cable support can also be made of customized products and manufactured in batches by professional factories. The cable holders 10 are preferably spaced apart by 0.8m in the cable duct. The spacing can be adjusted as desired at the desired branch.

Claims

1. The utility model provides a prefabricated cable pit of socket joint connection which characterized in that: the prefabricated finished products of the prefabricated cable trench are connected in a socket joint mode through a socket joint (2) and a socket joint (3); the socket joint of the socket joint (2) and the bell-and-spigot joint (3) adopts a sealing ring (4) for flexible insertion.

2. The pre-fabricated raceway of a socket joint of claim 1, further comprising: the finished product of the prefabricated part takes a straight standard prefabricated part (1) as a main part, a cross-shaped four-way prefabricated part (11) or a T-shaped three-way prefabricated part is arranged at a required branch, and an elbow prefabricated part is arranged at a required turning position; all the tubular prefabricated members adopt customized parts of a professional prefabricating factory.

3. The pre-fabricated raceway of a socket joint of claim 2, further comprising: the top of the cross-shaped four-way prefabricated part (11), the T-shaped three-way prefabricated part and part of the linear standard prefabricated part (1) is provided with an access hole (6) as required; the access hole (6) is a step hole, the access hole (6) is provided with a cover plate (8), and concrete (7) is laid at the step positions of the cover plate (8) and the access hole (6).

4. The pre-fabricated raceway of a socket joint of claim 2, further comprising: one end of the straight standard prefabricated part (1) is a socket joint (2), and the other end of the straight standard prefabricated part is a socket joint (3); the cross-shaped four-way prefabricated member (11) and the T-shaped three-way prefabricated member are uniformly arranged into a socket joint or a spigot joint according to requirements.

5. The pre-fabricated raceway of a socket joint of claim 1, further comprising: the socket joint (3) is convenient to install and strengthens the sealing effect, and four corners of the rectangular outline of the prefabricated cable trench are rounded to form an inner horn mouth shape with a small opening.

6. The pre-fabricated raceway of a socket joint of claim 1, further comprising: and the sealing ring (4) is positioned in a cavity between the outer ring of the socket joint (2) and the inner ring of the socket joint (3).

7. The pre-fabricated raceway of a socket joint of claim 2, further comprising: embedded parts (9) are arranged on the inner walls of the two sides of the tubular prefabricated part, and the embedded parts (9) are uniformly distributed along the length direction of the rectangular cylinder; and a cable bracket (10) is fixed on the embedded part (9).

8. The pre-fabricated raceway of a socket joint of claim 7, wherein: the embedded part (9) adopts an embedded bolt or an embedded steel plate; the cable support (10) is fixedly connected with the embedded bolt through a nut; or the cable bracket (10) is welded with the embedded steel plate.

9. The pre-fabricated raceway of a socket joint of claim 1, further comprising: and a sand and soil leveling layer (5) is laid at the bottom of the prefabricated cable trench.