CN104410031A - Prefabricated cable duct bank - Google Patents

Abstract

The invention discloses a prefabricated cable duct bank which is characterized in that a plurality of upper semi-round grooves and lower semi-round grooves are spliced in a one-to-one correspondence manner and integrally form an upper groove body and a lower groove body respectively; the upper and lower groove bodies are spliced to form the prefabricated cable duct bank; the prefabricated cable duct bank comprises a plurality of cable accommodating pipelines arranged at intervals; each cable accommodating pipeline is formed by splicing each upper semi-round groove and each lower semi-round groove; sealed waterproof structures are arranged at the two end parts of the spliced part of the upper and lower groove bodies. The prefabricated cable duct bank is convenient to construct and overhaul, good in waterproofness and reusable; due to the adoption of the prefabricated cable duct bank, the working period can be shortened and the efficiency can be improved.

Description

A prefabricated cable duct

technical field

The invention relates to the field of cable pipes, in particular to a prefabricated cable pipe.

Background technique

With the rapid development of the national economy and the continuous progress of science and technology, power cables have been widely used in the construction of rural power grids and urban power grids. Especially in the city center, commercial area and industrial area, etc., the power network is complex. In order to reduce the impact of cable laying construction on urban road traffic and improve the city appearance, cities are actively improving their construction technology to reduce the cost of cables. In the event of a fault, it is particularly important to extend the service life of the cable and improve the reliability of the power supply of the power system, so it is particularly important to lay the cable in the cable duct or tunnel.

At present, the underground cable pipe is mainly cast-in-place, that is, the single-hole pipe is placed after the pipe trench is excavated, and finally the whole is cast-in-place with concrete. This method inevitably has certain shortcomings. The construction site has large machinery and equipment, piled up a large number of building materials, and concrete mixing and curing will generate noise and pollute the environment. In addition, on-site maintenance will cause great inconvenience to the work, especially The situation will be more complicated in traffic arteries and densely populated areas, which will lead to long construction period and high cost; traditionally placed pipes are long, check whether the pipe is damaged before use, and clean the sundries inside the pipe. This is not easy for construction; the cast-in-place cable pipes have been finalized after production. For example, in the case of municipal road reconstruction projects that require cable pipe rerouting and rerouting, the heat dissipation of single-pipe pipes is poor due to the accumulation of too many cables. , When the cable is dragged in the hole, the outer insulation is easy to break, and the cast-in-place cable pipe is difficult to reuse, and it becomes construction waste, resulting in a waste of resources.

In order to solve the shortcomings of the traditional single-pipe pipe arrangement, too many cables piled up to cause poor heat dissipation, the outer layer insulation is easy to break when the cable is dragged in the hole, and it is difficult to reuse. 》Discloses a prefabricated cable duct mould, which is mainly composed of base, side plate, end plate, cover plate, mold core and mandrel. Structural geometry, the base is a reference support for connecting and fixing side plates and end plates; the side plates are installed on the side of the base; the end plates are installed on the upper end surface of the base; The geometric shape of the plane is determined according to the rectangular outer surface structure of the cable pipe; the mold core is set on the base, one end of the mandrel is connected to the mold core, and the other end is connected and fixed to the end plate; the side plate, end plate The inner space of the mold formed by the plate and the base is the geometric shape of the lining prefabricated cable conduit components. That is to say, the invention discloses the prefabricated cable conduit mold and also discloses a prefabricated cable conduit. However, this prefabricated cable duct also has defects. For example, the cable can only be placed in the duct through each prefabricated part. One cable is pulled out to detect which part is faulty, and even the prefabricated part is scrapped, which consumes more manpower and material resources. In order to solve the defects of this patent, the Chinese patent "A Splicable Direct Buried Pipe" with the application number 201220174963.X discloses a splicable direct buried pipe. The connection is secured by at least two vertical splints. However, this patent is a single pipe, and too many cables piled up will result in poor heat dissipation and inconvenient maintenance. In view of this, the Chinese patent "A Split Type Cable Pipe" with application number 201220120088.7 discloses a split The one-piece cable tube is composed of long Ω-shaped semi-circular tubes and short Ω-shaped semi-circular tubes. The long Ω-shaped semi-circular tubes are staggered together, and the two ends are respectively connected to a short Ω-shaped semi-circular tube. After the two ends are even, use self-tapping screws to pass The small holes arranged on both sides of the Ω-shaped semicircular pipe are all connected to form a long pipe with a round hole in the center. However, in this patent, because the pipes are independent and connected by screws, the construction requirements are high. For example, multiple pipes are required to be on the same horizontal plane during construction. When there are multiple pipes, it is difficult to realize multiple pipes. The connection is fixed on the same level, and this connection method has poor waterproof performance. There is an urgent need for a prefabricated cable duct that can be conveniently constructed, easily overhauled, waterproof, and reusable.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a prefabricated cable conduit that is convenient for construction, maintenance, good waterproof, and reusable. Using the prefabricated cable conduit can shorten the construction period and improve efficiency .

In order to solve the above-mentioned technical problems, the present invention adopts following scheme to realize:

A prefabricated cable pipe, which is spliced one by one by a plurality of upper semicircular grooves and lower semicircular grooves, the plurality of upper semicircular grooves and lower semicircular grooves are respectively integrally formed into an upper groove body and a lower groove body, and the upper and lower The grooves are spliced together to form a prefabricated cable conduit, which includes a plurality of cable accommodation pipes arranged at intervals. Each cable accommodation pipe is formed by connecting an upper semicircular groove and a lower semicircular groove. The two ends of the spliced upper and lower grooves are The interior is equipped with a sealed waterproof structure. The present invention is formed by splicing the upper and lower tanks. The cables can be directly placed in the lower tank and then covered with the upper tank. There is no need to pass the cables through the pipes, which greatly reduces the workload, and it is also possible to visually inspect the inside of the pipes before laying. Whether there are sundries, it is easy to clean, and only need to separate the two substrates in the process of circuit maintenance and reorganization, which can be reused in the future, saving resources and protecting the environment; the upper and lower tanks of the present invention are integrated, and the installation It is convenient and does not need to be leveled, and each has multiple semi-circular slots, and the cables can be placed separately, which will not cause heat dissipation problems caused by excessive cable accumulation.

Preferably, the sealed and waterproof structure is provided with a plurality of one-to-one corresponding screw holes at the spliced ends of the upper and lower tanks, and a water-stop strip is provided between the two ends. After the upper and lower tanks are spliced, they are connected and fixed by bolts, and the water-stop strips play a waterproof role.

In another solution, the sealing and waterproof structure is that the splicing end of the lower tank body is provided with an inverted T-shaped sealing groove, and the splicing end of the upper tank body is provided with a convex portion that engages with the inverted T-shaped sealing groove, and the inverted T-shaped sealing groove A sealing ring is embedded between the protrusion and the protrusion. The fixed splicing is carried out through the concave-convex occlusion of the splicing ends of the two grooves, and a sealing ring is added to play a waterproof role.

Further, the connection between the upper and lower tank bodies and the adjacent upper and lower tank bodies is that end faces are respectively provided at the joints, and the end faces are provided with a plurality of screw holes corresponding to the other adjacent end face. The upper and lower tanks are fixed with the adjacent upper and lower tanks by bolt connection.

Waterproof paint is applied to the contact between the end faces of the upper and lower tanks and the adjacent end faces. The waterproof paint can isolate external water from entering the drain pipe. the

The upper and lower tank bodies are provided with reinforcing plates both longitudinally and transversely. The cross-section of the upper and lower grooves is corrugated, which greatly reduces the weight of the wire groove, and the parallel and vertical reinforcement plates are installed to strengthen the transverse and longitudinal compressive and tensile strength of the substrate.

Preferably, there are four upper and lower semicircular grooves arranged side by side, and the cross section of the semicircular grooves is semicircular. This is a better setting in this plan. In this plan, the diameter of the cable is considered to be 110mm, and the diameter of the wire slot is designed to be 140mm. In the absence of cable bending, the cables of the same type are arranged side by side, and the wire slot is designed The minimum clear distance between the cables is 50mm, and the side-by-side arrangement is conducive to the formation of the tubes, so the tubes can be stacked and used, which effectively improves the space utilization.

The present invention also provides a prefabricated cable conduit, which includes two end plates arranged in parallel, and a plurality of troughs with horizontal ends and a plurality of semicircular grooves in the middle. The horizontal ends of the trough and the end plates on both sides There is a splicing structure between them, through which the tank body is set up and down on the end plate, the upper tank body is set on the end plate, the lower tank body is set under the end plate, and the semicircular groove in the middle of the upper and lower tank bodies is formed correspondingly For each separate cable accommodating pipe, a waterproof structure is also provided between the end plate and the horizontal ends of the upper and lower tanks. When laying prefabricated cable pipes, due to the long laying length, the prefabricated cable pipes will not be on the same level, which will bring great trouble to the construction, so the connection between two adjacent cable pipes It will not be firm, and it is easy to loosen and enter the water. The present invention splices the horizontal ends of the two upper and lower semicircular grooves with two parallel end plates to ensure that the splicing of the upper and lower semicircular grooves is carried out in the horizontal direction, so that long-distance layout.

Both ends of the end plate are stepped and spliced with adjacent end plates. The end plate is provided with screw holes corresponding to the horizontal ends of the semicircular groove. When laying cable conduits over long distances, the end plates are horizontally positioned by splicing adjacent end plates.

Further, the splicing structure is a screw connection. That is, the horizontal ends of the semicircular groove and the end plates on both sides are provided with corresponding screw holes. In addition, the water stop bar of the waterproof structure is correspondingly provided with screw holes corresponding to the horizontal ends of the semicircular groove and the end plate.

The front and rear sections of the semicircular groove are provided with vertical splicing plates, through which a plurality of circular grooves are extended and connected. The adjacent splicing plates are fixed by screws.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention is formed by splicing the upper and lower tanks. The cables can be directly placed in the lower tank and then covered with the upper tank. There is no need to pass the cables through the pipes, which greatly reduces the workload, and it is also possible to visually inspect the inside of the pipes before laying. Whether there are sundries, it is easy to clean, and only need to separate the two substrates in the process of circuit maintenance and reorganization, which can be reused in the future, saving resources and protecting the environment; the upper and lower tanks of the present invention are integrated, and the installation It is convenient and does not need to be leveled, and each has multiple semi-circular slots, and the cables can be placed separately, which will not cause heat dissipation problems caused by excessive cable accumulation.

Description of drawings

Fig. 1 is the schematic diagram of assembly structure of the present invention;

Fig. 2 is the structural representation of tank body;

Fig. 3 is a schematic cross-sectional view of the present invention;

Figure 4 is an enlarged view of the end of the present invention;

Fig. 5 is the schematic diagram of the assembly structure of embodiment 3;

Fig. 6 is the structural representation of end plate;

Among them, 1. Upper tank body; 2. Lower tank body; 3. Semicircular groove; 4. End face; 5. End; 6. Longitudinal reinforcement plate; 7. Transverse reinforcement plate; 8. Screw hole; 10. Waterstop strip; 11. End plate; 12. Splicing plate.

Detailed ways

In order to allow those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

Example 1

As shown in Figures 1 and 2, a prefabricated cable conduit is composed of a plurality of upper semicircular grooves and lower semicircular grooves that are spliced one by one. The lower tank body 2, and the two ends of the splicing of the upper and lower tank bodies 1, 2 are provided with a sealed waterproof structure.

The sealed and waterproof structure is that the two ends 5 of the spliced upper and lower tank bodies 1 and 2 are provided with a plurality of one-to-one corresponding screw holes 8 and a water-stop strip 10 is provided between the two ends.

The connection between the upper and lower tank bodies and the adjacent upper and lower tank bodies is that an end face 4 is provided at the joint respectively, and the end face 4 is provided with a plurality of screw holes 8 corresponding to the other adjacent end face.

The contact between the end face 4 of the upper and lower tank bodies and the adjacent end face is coated with waterproof paint. the

The upper and lower tank bodies are provided with longitudinal reinforcing plates and transverse reinforcing plates respectively in the longitudinal and transverse directions.

Example 2

Except for the sealing and waterproof structure, the others are the same as in Embodiment 1; as shown in Figures 3 and 4, the sealing and waterproof structure is that an inverted T-shaped sealing groove is provided at the splicing end of the lower tank body, and an inverted T-shaped sealing groove is provided at the splicing end of the upper tank body. The convex portion engaged by the inverted T-shaped sealing groove, and a sealing ring 9 is embedded between the inverted T-shaped sealing groove and the convex portion.

Example 3

As shown in Figure 5, it includes two end plates 11 arranged in parallel, and a plurality of tanks with horizontal ends and a plurality of semicircular grooves in the middle. A splicing structure is provided between the horizontal ends of the tank and the end plates 11 on both sides. Through this splicing structure, the tank body is arranged up and down on the end plate 11, the upper tank body 1 is set on the end plate, and the lower tank body 2 is set on the bottom of the end plate, and the semicircular groove 3 in the middle of the upper and lower tank bodies 1 and 2 corresponds Each separate cable accommodating duct is formed, and a waterproof structure is also provided between the end plate 11 and the horizontal ends of the upper and lower tanks 1 and 2 .

As shown in FIG. 6 , both ends of the end plate 11 are stepped and spliced with adjacent end plates 11 . The end plate 11 is provided with screw holes 8 corresponding to the horizontal ends of the semicircular groove 3 .

Further, the splicing structure is a screw connection. That is, screw holes 8 corresponding to each other are provided at the horizontal ends of the semicircular groove 3 and the end plates 11 on both sides. In addition, the water stop strip 10 of the waterproof structure is provided with screw holes 8 corresponding to the horizontal ends of the semicircular groove 3 and the end plate 11 .

The front and back sections of the semicircular groove 3 are provided with vertical splicing plates 12, through which a plurality of circular grooves are extended and connected. The adjacent splicing plates are fixed by screws.

The above-mentioned embodiments are only specific implementations of the present invention, and their descriptions are more specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these obvious replacement forms all belong to the protection scope of the present invention.

Claims (10)

1. A prefabricated cable pipe, which is spliced one by one by a plurality of upper semicircular grooves and lower semicircular grooves, characterized in that the plurality of upper semicircular grooves and lower semicircular grooves are integrally formed into an upper groove body and a lower groove body respectively , the upper and lower grooves are spliced together to form a prefabricated cable conduit, the prefabricated cable conduit includes a plurality of cable accommodation pipes arranged at intervals, each cable accommodation pipe is formed by connecting an upper semicircular groove and a lower semicircular groove, the upper and lower The two ends of the splicing of the tank body are provided with a sealed waterproof structure. 2. A prefabricated cable conduit according to claim 1 or 2, characterized in that the sealed and waterproof structure is provided with a plurality of one-to-one corresponding screw holes at both ends of the spliced upper and lower tanks, and the two ends There is a water-stop strip in between. 3. A prefabricated cable conduit according to claim 1, characterized in that the sealing and waterproof structure is provided with an inverted T-shaped sealing groove at the splicing end of the lower tank body, and an inverted T-shaped sealing groove at the splicing end of the upper tank body. The convex portion engaged by the T-shaped sealing groove, and a sealing ring is embedded between the inverted T-shaped sealing groove and the convex portion. 4. A kind of prefabricated cable pipe according to claim 1, characterized in that, the connection between the upper and lower tanks and the adjacent upper and lower tanks is that end faces are respectively provided at the joints, and the end faces are provided with multiple The corresponding screw hole on the other adjacent end face. 5 . The prefabricated cable conduit according to claim 4 , wherein the contact between the end faces of the upper and lower tanks and the adjacent end faces is coated with waterproof paint. 5 . 6. A prefabricated cable conduit according to claim 1, characterized in that, the upper and lower tanks are provided with reinforcing plates both longitudinally and transversely. 7. A prefabricated cable duct, characterized in that it includes two parallel end plates, and a plurality of tanks with horizontal ends and a plurality of semicircular grooves in the middle, the horizontal ends of the tank and the end plates on both sides There is a splicing structure between them, through which the tank body is set up and down on the end plate, the upper tank body is set on the end plate, the lower tank body is set under the end plate, and the semicircular groove in the middle of the upper and lower tank bodies is formed correspondingly For each separate cable accommodating pipe, a waterproof structure is also provided between the end plate and the horizontal ends of the upper and lower tanks. 8 . The prefabricated cable conduit according to claim 7 , wherein the waterproof structure is provided with water-stop strips. 9. A prefabricated cable conduit according to claim 7, characterized in that, the front and rear sections of the tank body are provided with vertical splicing plates, through which multiple tank bodies are extended and connected. 10. A prefabricated cable conduit according to claim 7 or 9, characterized in that, the splicing structure is a screw connection, and the splicing plates are fixed by screws.