Prefabricated cable duct bank unit

Abstract

The utility model provides a prefabricated cable duct bank unit, which comprises a duct bank body and a plurality of cable holes penetrating through the duct bank body, the projections of all the cable holes in the vertical direction are Y-direction projections, the minimum distance between the two outer sides of the Y-direction projections is S1, the projections of all the cable holes in the horizontal direction are X-direction projections, and the X-direction projections are X-direction projections. The minimum distance between the two outer sides of the X-direction projection is S2, and the minimum distance is S2gt; s1. The prefabricated cable duct bank unit provided by the utility model can enable the use effect to be better.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable conduit arrangement, and relates to a prefabricated cable conduit arrangement unit. Background Art

[0002] As the name suggests, cable conduits are structures for routing cables, and are currently typically prefabricated. They are typically used to connect box-type transformers and ring main units (RMUs). Because these units are spaced a certain distance apart, cable conduits are typically connected in series. Multiple cable holes are defined throughout the middle of the conduit.

[0003] At present, when pre-buried cable conduits commonly found on the market are pre-buried on site, it is first necessary to dig a corresponding groove in the ground, then cast a cushion layer at the bottom, and then place the cable conduits one by one on the cushion layer and fix them one by one. However, in the actual construction process, it was found that since the arrangement of cable holes in the common cable conduits is mainly horizontal, that is, the number of columns of cable holes is greater than the number of rows, and the width of the cable conduits is greater than the thickness, when burying them in the ground, a relatively wide groove needs to be dug. When constructing in some places such as old urban areas, it is easy to cause construction difficulties or even impossible construction, and the use effect is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated cable conduit unit, aiming to solve the problem of poor use effect.

[0005] In order to solve the above technical problems, the utility model provides a prefabricated cable conduit unit, including a conduit body and a plurality of cable holes passing through the conduit body, the projection of all the cable holes in the vertical direction is the Y-direction projection, and the minimum distance between the two outer sides of the Y-direction projection is S1, the projection of all the cable holes in the horizontal direction is the X-direction projection, and the minimum distance between the two outer sides of the X-direction projection is S2, and S2>S1.

[0006] The present invention is further configured such that the cable holes are evenly distributed in the horizontal and vertical directions.

[0007] The present invention is further configured such that the pipe body includes a first head, a second head, and a middle portion located between the first head and the second head, the width of the middle portion is smaller than the widths of the first head and the second head, and there is a set distance between the middle portion and the two side edges of the first head and the second head, connecting holes are opened through the first head and the second head, the length direction of the connecting holes is parallel to the length direction of the middle portion, and the connecting holes are located on the outside of the middle portion.

[0008] The present invention is further configured such that a countersunk portion is provided at one end of the connecting hole close to the middle portion, and the diameter of the countersunk portion is larger than the diameter of the connecting hole.

[0009] The present invention is further configured such that a U-shaped lap joint with an upward opening is provided on the bottom of the second head portion on a side facing away from the first head portion, and a lap groove cooperating with the lap joint portion is provided on the outer side of the first head portion.

[0010] The utility model is further configured such that the connecting piece includes limiting portions on both sides and a supporting portion located between the two limiting portions, the top of the limiting portion and the top of the supporting portion are both inclined, and the inclined top is connected to the second head.

[0011] The present invention is further configured such that a side inclined surface of the limiting portion close to the supporting portion is a guiding inclined surface, and the guiding inclined surface is inclined outward.

[0012] The utility model is further configured such that a consolidation hole is provided on the top of the limiting portion, a matching hole is provided vertically through the first head portion to match the consolidation hole, and a trumpet-shaped pouring port opening upward is provided on the top of the matching hole.

[0013] The utility model is further configured such that a U-shaped sealing groove is provided on the side of the second head facing away from the first head, all the cable holes are located in the opening of the sealing groove, and both ends of the sealing groove are connected to the top ends of the connecting piece.

[0014] The present invention is further configured such that a plurality of embedded hanging tubes are vertically arranged on the top of the row pipe body, the tops of the middle part, the first head and the second head are at the same height, the bottoms of the first head and the second head are at the same height, the bottom of the middle part is higher than the bottom of the first head, the bottom of the middle part is in the shape of an arc opening upward, and both ends of the cable hole are chamfered or rounded.

[0015] Compared with the prior art, the utility model provides a prefabricated cable conduit unit. Since the cable holes are prefabricated, S2>S1, that is, the height range of all prefabricated holes is greater than the width range, usually the number of columns of cable holes is less than the number of rows. In this way, when the conduit body is pre-buried, the width requirement for the ground pre-grooving is relatively low, and the depth requirement is relatively high. After the pre-grooving is dug, a cast-in-place cushion layer is placed at the bottom, and then the conduit body is placed on the cushion layer from top to bottom. Since the width of the conduit body is relatively small, even in old urban areas and other places, the excavation width requirement is relatively low (usually the water, electricity, gas, sewage pipes, etc. underground in old urban areas will not be affected at deeper depths, but may be affected at shallower places). This makes the actual construction less difficult. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of a prefabricated cable conduit unit of the present invention. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of a prefabricated cable conduit unit of the present invention. Figure 2 ;

[0018] Figure 3 yes Figure 2 Enlarged view of part A;

[0019] Figure 4 This is a schematic diagram of an embodiment of the assembly state of a prefabricated cable conduit unit of the present invention. Figure 2

[0020] Figure 5 yes Figure 4 Enlarged view of part B;

[0021] Figure 6 It is a cross-sectional view of an embodiment of a prefabricated cable conduit unit of the present invention.

[0022] Among them, 1. Pipe body; 1a. First head; 1b. Second head; 1c. Middle part; 2. Cable hole; 3. Connection hole; 4. Countersunk head; 5. Joint; 5a. Limiting part; 5b. Support part; 5c. Guide slope; 6. Joint groove; 7. Consolidation hole; 8. Matching hole; 9. Casting mouth; 10. Sealing groove; 11. Embedded hanging tube. DETAILED DESCRIPTION

[0023] The following is a detailed description of the prefabricated cable conduit unit proposed by the present invention, with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0024] A prefabricated cable conduit unit, such as Figures 1 to 6 As shown, it includes a pipe body 1 and a plurality of cable holes 2 passing through the pipe body 1. The projection of all the cable holes 2 in the vertical direction is the Y-direction projection. The minimum distance between the two outer sides of the Y-direction projection is S1. The projection of all the cable holes 2 in the horizontal direction is the X-direction projection. The minimum distance between the two outer sides of the X-direction projection is S2. S2>S1 (i.e. Figure 6 (where X>Y).

[0025] The cable holes 2 are evenly distributed in the horizontal and vertical directions.

[0026] The row pipe body 1 includes a first head 1a, a second head 1b and a middle portion 1c located between the first head 1a and the second head 1b. The width of the middle portion 1c is smaller than the width of the first head 1a and the second head 1b, and there is a set distance between the middle portion 1c and the two side edges of the first head 1a and the second head 1b. Connecting holes 3 are opened through the first head 1a and the second head 1b. The length direction of the connecting holes 3 is parallel to the length direction of the middle portion 1c, and the connecting holes 3 are located on the outside of the middle portion 1c.

[0027] A countersunk head 4 is provided at one end of the connection hole 3 close to the middle portion 1 c . The diameter of the countersunk head 4 is larger than that of the connection hole 3 .

[0028] A U-shaped lap joint 5 opening upward is provided at the bottom of the second head 1 b on the side away from the first head 1 a , and a lap groove 6 cooperating with the lap joint 5 is provided on the outer side of the first head 1 a .

[0029] The connecting member 5 includes limiting portions 5a on both sides and a supporting portion 5b located between the two limiting portions 5a. The tops of the limiting portions 5a and the supporting portions 5b are both inclined, and the inclined tops are connected to the second head portion 1b.

[0030] The inclined surface on one side of the limiting portion 5a close to the supporting portion 5b is a guiding inclined surface 5c, and the guiding inclined surface 5c is inclined outward.

[0031] A consolidation hole 7 is provided at the top of the limiting portion 5a, and a matching hole 8 is provided vertically through the first head portion 1a to match the consolidation hole 7. A trumpet-shaped pouring port 9 opening upward is provided at the top of the matching hole 8.

[0032] A U-shaped sealing groove 10 is provided on the side of the second head 1b away from the first head 1a. All the cable holes 2 are located in the opening of the sealing groove 10. The two ends of the sealing groove 10 are connected to the top of the two ends of the connecting piece 5.

[0033] A number of embedded hanging tubes 11 are vertically arranged on the top of the pipe body 1. The tops of the middle part 1c, the first head 1a and the second head 1b are at the same height, and the bottoms of the first head 1a and the second head 1b are at the same height. The bottom of the middle part 1c is higher than the bottom of the first head 1a, and the bottom of the middle part 1c is in the shape of an arc opening upward. Both ends of the cable hole 2 are chamfered or rounded.

[0034] The present invention provides a prefabricated cable conduit unit. When the cable holes 2 are prefabricated, S2>S1 is made, that is, the height range of all prefabricated holes is greater than the width range. Usually, the number of columns of the cable holes 2 is less than the number of rows. In this way, when the conduit body 1 is pre-buried, the width requirement for the ground pre-grooving is firstly low, while the depth requirement is high. After the pre-grooving is dug, a cast-in-place cushion layer is made at the bottom, and then the conduit body 1 is placed on the cushion layer from top to bottom. Since the width of the conduit body 1 is relatively small, the excavation width requirement is relatively low even in places such as old urban areas (usually, underground water, electricity, gas, sewage pipes, etc. in old urban areas will not be affected at deeper depths, but may be affected at shallower places). This makes the actual construction less difficult.

[0035] In actual construction, due to the large excavation width of conventional cable conduits, it is usually necessary to excavate an inclined construction trough on the side of the pre-grooved excavation, that is, to excavate a trough on the side for connecting the cable conduits, thus making the excavation width larger. However, in this application, not only is the width smaller during excavation, but also when the adjacent conduit bodies 1 are connected, the operation only needs to be performed on the top of the conduit body 1 without the need for workers to descend to the side of the conduit body 1, so that the width of the excavated groove only needs to be slightly larger than the maximum width of the conduit body 1 (only 15-20cm of width needs to be reserved on both sides); that is, not only the width of the groove needs to be smaller, but also the width of the construction grooves that need to be reserved on both sides is smaller, thus reducing the overall excavation width.

[0036] During actual construction, after the cushion layer is poured, the hanging rod is connected to the internal thread of the embedded hanging tube 11, and then the pipe body 1 is lifted onto the cushion layer using tools such as a crane, so that the first head 1a and the second head 1b are both in contact with the cushion layer, and at the same time, the lap groove 6 of the next row of pipe bodies 1 is buckled onto the lap piece 5 of the previous row of pipe bodies 1; then the long screw is passed horizontally through the two adjacent connecting holes 3, and the worker connects the nut to the long screw at the top of the pipe body 1, and finally connects the two adjacent pipe bodies 1 through the long screw and the nut, and at this time the nut and nut of the long screw are both located in the countersunk head 4, and concrete will eventually be injected into the countersunk head 4 to prevent rust.

[0037] Afterwards, the worker passes the steel bar through the matching hole 8 from top to bottom and inserts it into the consolidation hole 7 (the bottom of the steel bar does not pass through the limiting part 5a). At this time, the bottom of the steel bar is located in the consolidation hole 7, and the top is located in the matching hole 8. Then the steel bar is kept vertical, and cement is poured into the matching hole 8 and the consolidation hole 7 through the pouring port 9 for sealing. The adjacent pipe bodies 1 can have good shear strength after passing through the long screw and the steel bar, that is, the pipes have good strength and a long service life after completion.

[0038] When assembling adjacent pipe bodies 1, the inclined guide bevel 5c facilitates the fit between the overlap groove 6 and the overlap member 5. This means that even if the adjacent pipe bodies 1 are not aligned perfectly, the overlap groove 6 and the overlap member 5 can still guide the pipe bodies 1 and align them. Furthermore, because the tops of the limiting portion 5a and the supporting portion 5b are inclined rather than horizontal, when the next pipe body 1 is moved horizontally toward the previous pipe body 1, even if the two pipe bodies 1 are at the same height, collision or scratching between the two pipe bodies 1 can be effectively prevented, allowing for smooth assembly of the pipe bodies 1 and protecting the pipe bodies 1. Furthermore, the cross-section of each of the two adjacent guide bevels 5c is shaped like a figure eight. This allows the guide bevel 5c to guide the pipe bodies 1 when the pipe bodies 1 are moved horizontally, allowing for smooth assembly.

[0039] When the assembly of the drainage pipe body 1 is completed, a water-swelling rubber strip needs to be inserted into the sealing groove 10 on the outside of the second head 1b waiting for assembly. At the same time, a circle of waterproof glue needs to be squeezed on the outside of the second head 1b, waiting for the next first head 1a to be assembled. The water-swelling rubber strip and waterproof glue can greatly improve the sealing and waterproof properties between adjacent drainage pipe bodies 1, and can provide better protection for internal cables, signal lines, box transformers and ring network cabinets connected to the drainage pipe body 1.

[0040] Both ends of the cable hole 2 are chamfered or rounded, so even if the tube body 1 is not perfectly aligned (which is the case in reality), the chamfered or rounded cable hole 2 can guide the cable, allowing the cable to pass through the cable hole 2 smoothly, and can also protect the cable during the traction process, with better use effect.

[0041] Since the thickness of the middle portion 1c is smaller than that of the first head portion 1a and the second head portion 1b, the entire drainage pipe body 1 is in the shape of an I-beam. This structure ensures that the drainage pipe body 1 has sufficient strength. Furthermore, it reduces the mass of the drainage pipe body 1, which not only reduces production costs but also transportation costs. Furthermore, since the cushion layer is difficult to achieve when casting in situ, the drainage pipe body 1 only contacts the cushion layer through the first head portion 1a and the second head portion 1b. As long as the cushion layer at the bottom of the first head portion 1a and the second head portion 1b is at the same height, the drainage pipe body 1 can maintain a good angle, lowering the requirements for the cushion layer and improving construction convenience. After the drainage pipe body 1 is spliced ​​together, it can be cast downward from both sides of the middle portion 1c, and the bottom of the middle portion 1c can be filled with cement or other materials to further ensure strength. At the same time, since the bottom of the middle portion 1c is higher than the first head portion 1a and the second head portion 1b and the bottom of the middle portion 1c is an upward arc, the poured slurry can be better filled, resulting in a better construction effect.

[0042] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A prefabricated cable conduit unit, characterized in that: The invention comprises a pipe body (1) and a plurality of cable holes (2) passing through the pipe body (1), wherein the projections of all the cable holes (2) in the vertical direction are Y-direction projections, and the minimum distance between the two outer sides of the Y-direction projections is S1; the projections of all the cable holes (2) in the horizontal direction are X-direction projections, and the minimum distance between the two outer sides of the X-direction projections is S2, wherein S2>S1.

2. The prefabricated cable conduit unit according to claim 1, characterized in that: The cable holes (2) are evenly distributed in both the horizontal and vertical directions.

3. The prefabricated cable conduit unit according to claim 1, characterized in that: The pipe body (1) includes a first head (1a), a second head (1b) and a middle portion (1c) located between the first head (1a) and the second head (1b). The width of the middle portion (1c) is smaller than the widths of the first head (1a) and the second head (1b), and there is a set distance between the middle portion (1c) and the two side edges of the first head (1a) and the second head (1b). Connecting holes (3) are provided through the first head (1a) and the second head (1b). The length direction of the connecting holes (3) is parallel to the length direction of the middle portion (1c), and the connecting holes (3) are located on the outside of the middle portion (1c).

4. The prefabricated cable conduit unit according to claim 3, characterized in that: One end of the connection hole (3) close to the middle portion (1c) is connected to a countersunk portion (4), and the diameter of the countersunk portion (4) is larger than the diameter of the connection hole (3).

5. The prefabricated cable conduit unit according to claim 3, characterized in that: A U-shaped lap joint (5) with an opening facing upward is provided at the bottom of the second head (1b) on the side facing away from the first head (1a), and a lap joint groove (6) matching the lap joint (5) is provided on the outer side of the first head (1a).

6. The prefabricated cable conduit unit according to claim 5, characterized in that: The connecting piece (5) comprises limiting portions (5a) on both sides and a supporting portion (5b) located between the two limiting portions (5a); the top of the limiting portion (5a) and the top of the supporting portion (5b) are both inclined, and the inclined top is connected to the second head portion (1b).

7. The prefabricated cable conduit unit according to claim 6, characterized in that: The inclined surface on one side of the limiting portion (5a) close to the supporting portion (5b) is a guiding inclined surface (5c), and the guiding inclined surface (5c) is inclined outward.

8. The prefabricated cable conduit unit according to claim 6, characterized in that: A consolidation hole (7) is provided at the top of the limiting portion (5a), a matching hole (8) is provided vertically through the first head portion (1a) and matches the consolidation hole (7), and a trumpet-shaped pouring port (9) with an upward opening is provided at the top of the matching hole (8).

9. The prefabricated cable conduit unit according to claim 5, characterized in that: A U-shaped sealing groove (10) is provided on the side of the second head (1b) facing away from the first head (1a), and all the cable holes (2) are located in the opening of the sealing groove (10). The two ends of the sealing groove (10) are connected to the top of the two ends of the connecting member (5).

10. The prefabricated cable conduit unit according to claim 3, characterized in that: A plurality of embedded hanging tubes (11) are vertically arranged on the top of the pipe body (1); the tops of the middle portion (1c), the first head portion (1a) and the second head portion (1b) are at the same height; the bottoms of the first head portion (1a) and the second head portion (1b) are at the same height; the bottom of the middle portion (1c) is higher than the bottom of the first head portion (1a); the bottom of the middle portion (1c) is in the shape of an arc with an opening facing upward; and both ends of the cable hole (2) are chamfered or rounded.

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