Power cable direct burial laying protection structure

Abstract

The utility model provides a kind of power cable direct-buried laying protection structure, including substrate, mounting seat, protection bin;Substrate includes the plate body with mounting groove being equipped in upper end face and the ground thorn being equipped on plate body;Mounting seat is installed on mounting groove and can be adjusted and fixed position along the length direction of mounting groove;The upper end surface of mounting seat is equipped with mounting position;Protection bin includes the lower shell of being detachably installed on mounting position and the upper shell of being detachably covered with lower shell;Upper shell and lower shell form cable accommodating cavity along the axial line direction after covering, and the inside of both ends of cable accommodating cavity is equipped with elastic sealing ring;The butt joint edge of upper shell and lower shell is equipped with horizontal extension, and the contact surface of butt joint edge of two is embedded with elastic sealing strip.The utility model provides a kind of power cable direct-buried laying protection structure structure simple, installation maintenance is convenient, with good sealing performance, can be stably installed on soft soil layer.

Description

Technical Field

[0001] This utility model belongs to the field of power cable laying technology, and in particular relates to a protective structure for direct burial of power cables. Background Technology

[0002] Direct burial of cables is a common method of underground cable laying. During construction, cable joints, sections where cables cross power lines, and critical nodes such as those passing through buildings and tunnels are the weakest points of the entire line, requiring additional mechanical and environmental protection to prevent mechanical damage to the cables and to prevent short circuits caused by power line breaks. Traditional methods include using cement trenches, brick manholes, precast concrete protective boxes, and cable protection pipes. These structures have several drawbacks: First, some structures are quite heavy, making them prone to uneven settlement in soft soil layers (such as backfill soil and silty soil), leading to tilting, cracking, and pressure on internal cable joints; second, they are mostly integrated, enclosed structures, making installation, maintenance, or replacement of cable joints inconvenient; finally, their sealing performance is often poor, allowing underground moisture and corrosive media to easily penetrate, affecting the service life of the cable joints. Therefore, there is an urgent need for a protective structure that can be stably installed in soft soil layers, is easy to install and maintain, and possesses excellent sealing performance. Utility Model Content

[0003] In view of this, in order to solve the above-mentioned technical problems, this utility model proposes a power cable direct burial protection structure that is simple in structure, convenient to install and maintain, has good sealing performance, and can be stably installed on soft soil layers.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A protective structure for direct burial of power cables includes:

[0006] A substrate is used to be laid flat on a soft soil layer in a tunnel. The substrate includes a plate body and detachable spikes mounted on the plate body. The upper end face of the plate body is provided with an installation groove. The spikes can be inserted into and anchored in the soft soil layer.

[0007] The mounting base has its bottom mounted on the mounting groove, and its position can be adjusted and fixed along the length of the mounting groove; the upper surface of the mounting base has a mounting position.

[0008] The protective chamber includes a detachable lower housing mounted on the mounting position and an upper housing detachably covered by the lower housing. After the upper housing and the lower housing are closed, they form a cable receiving cavity along the axial direction. Both ends of the cable receiving cavity are provided with elastic sealing rings on their inner sides. The elastic sealing rings can tightly adhere to the outer surface of the cable, serving to fix the cable and provide a seal. The upper housing and the lower housing are provided with horizontally outwardly extending mating edges at their joints. An elastic sealing strip is embedded at the contact surface of the mating edges after they are joined, which serves to provide a seal.

[0009] Furthermore, the plate has multiple positioning holes at both ends for inserting the ground spikes, and the lower end of the ground spikes passes through the positioning holes to fix the base plate to the soft soil layer.

[0010] Furthermore, the plate body has a cuboid structure, the mounting groove is opened along the length direction of the upper end face of the plate body, and the two side walls of the plate body along the length direction are provided with sliding grooves communicating with the mounting groove; the bottom sides of the mounting base are provided with insert plates that insert into the two sliding grooves, the insert plates are provided with positioning studs, and the positioning studs are provided with locking nuts for fixing the position of the mounting base; when the mounting base is moved to a suitable position, the locking nuts are tightened, and the locking nuts are pressed tightly against the plate body, thereby fixing the position of the mounting base.

[0011] Furthermore, the mounting position has a semi-circular structure, with the bottom of the lower housing inserted into the mounting position, and the bottom of the mating edge of the lower housing resting on the top of the side wall of the mounting position; the top of the side wall of the mounting position is provided with a mating insertion hole, and the bottom of the mating edge of the lower housing is provided with a mating rod that can be embedded in the mating insertion hole; the inner wall of the mating insertion hole is provided with an elastic pad that increases frictional resistance, and the mating rod is tightly inserted into the mating insertion hole, thereby fixing the lower housing on the mounting position.

[0012] Furthermore, the upper housing and the lower housing are detachably fixed by bolts and nuts; multiple corresponding pairs of fixing holes are provided on the mating edge of the upper housing and the lower housing and outside the elastic sealing strip, and the bolts pass through the fixing holes and are then fixed by nuts, thereby fixing the upper housing and the lower housing.

[0013] Furthermore, the cable receiving cavity is provided with a cable fixing and protective layer and a cable anti-slip pad layer; the cable fixing and protective layer is made of plastic material with a certain hardness, and the inner side is provided with the cable anti-slip pad layer with elasticity and friction.

[0014] Furthermore, the lower end face of the mating edge of the upper housing is provided with a sealing groove, and the upper end face of the mating edge of the lower housing is provided with the elastic sealing strip; after the upper housing and the lower housing are closed, the elastic sealing strip is pressed into the sealing groove to form a sealing structure.

[0015] Furthermore, the mounting base and the protective compartment are provided in one or more sets, arranged along the length of the mounting groove, and the position of each set of the mounting base and the protective compartment can be adjusted according to the actual use.

[0016] Compared with existing technologies, the power cable direct burial protection structure of this utility model has the following advantages:

[0017] (1) The main structure of the power cable direct burial protection structure of this utility model includes a base plate, a mounting seat fixed on the base plate and a protective chamber fixed on the mounting seat. The structure is simple. During installation, the lower shell is opened, the cable is embedded in the cable receiving cavity, and then the upper shell is closed and the upper and lower shells are fixed to complete the assembly. The installation and maintenance are convenient. By setting an elastic sealing strip at the joint edge of the upper and lower shells and setting an elastic sealing ring at both ends of the cable receiving cavity, it is isolated from the outside world and has good sealing performance. Ground spikes are set on the plate to be stably fixed on the soft soil layer of the tunnel.

[0018] (2) The power cable direct burial protection structure described in this utility model can effectively anchor the entire protection structure to the soft soil layer by setting detachable ground spikes on the plate, preventing it from shifting or tilting due to external forces or its own settlement, and has high stability.

[0019] (3) The power cable direct burial protection structure described in this utility model adopts a split structure with detachable upper and lower shells, which makes the cable placement, wiring and encapsulation operations very convenient.

[0020] (4) The power cable direct burial protection structure described in this utility model has excellent sealing performance. Through the cooperation of elastic sealing strip and elastic sealing ring, a reliable seal is formed when the protection chamber is closed, which effectively isolates underground moisture, water accumulation and corrosive media, and plays a good anti-corrosion protection role for important nodes of the cable, thus extending its service life. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the external structure of the power cable direct burial protection structure described in Embodiment 1 of this utility model;

[0023] Figure 2 This is a top view schematic diagram of the power cable direct burial protection structure described in Embodiment 1 of this utility model;

[0024] Figure 3 This is a side view of the protective structure for direct burial of power cables as described in Embodiment 1 of this utility model.

[0025] Figure 4 This is a schematic diagram of the internal structure of the power cable direct burial protection structure described in Embodiment 1 of this utility model;

[0026] Figure 5 This is a top view of the internal structure of the power cable direct burial protection structure (after the upper shell is opened) as described in Embodiment 1 of this utility model.

[0027] Figure 6 This is a schematic diagram of the external structure of the power cable direct burial protection structure described in Embodiment 2 of this utility model.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1-Substrate, 11-Plate body, 12-Ground spike, 13-Mounting groove, 14-Slide groove;

[0030] 2-Mounting base, 21-Insert plate, 22-Positioning stud, 23-Locking nut, 24-Mounting position, 25-Mating hole;

[0031] 3-Protective chamber, 31-Lower shell, 32-Upper shell, 33-Cable receiving cavity, 34-Elastic sealing ring, 35-Cable fixing protective layer, 36-Cable anti-slip pad layer, 37-Mating edge, 371-Mating rod, 38-Sealing groove, 39-Elastic sealing strip;

[0032] 4-Cable. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Example 1

[0038] like Figures 1 to 5 As shown, a protective structure for direct burial of power cables includes a base plate 1, a mounting base 2, and a protective compartment 3.

[0039] The base plate 1 is used to lay flat on the soft soil layer of the tunnel; the base plate 1 includes a plate body 11 and a detachable spike 12 installed on the plate body 11; the plate body 11 has a cuboid structure, and the upper end face of the plate body is provided with an installation groove 13 along the length direction. The two side walls of the plate body 11 along the length direction are provided with sliding grooves 14 that communicate with the installation groove 13; the two ends of the plate body 11 are provided with a plurality of positioning holes for inserting the spike 12, and the lower end of the spike 12 passes through the positioning holes to fix the plate body 11 on the soft soil layer.

[0040] The bottom of the mounting base 2 is mounted on the mounting groove 13. The bottom of the mounting base 2 has two insert plates 21 on both sides for inserting into two sliding grooves 14. The insert plates 21 are provided with positioning studs 22, and the positioning studs 22 are provided with locking nuts 23 for fixing the position of the mounting base 2. When the mounting base 2 is moved to the appropriate position, the locking nuts 23 are tightened, and the locking nuts 23 are tightly pressed against the plate 11 to fix the position of the mounting base 2. The upper end face of the mounting base 2 is provided with a semi-circular mounting position 24.

[0041] The protective chamber 3 includes a lower shell 31 and an upper shell 32 that is detachably covered by the lower shell 31. When the upper shell 31 and lower shell 32 are closed, they form a cable receiving cavity 33 along the axial direction. Elastic sealing rings 34 are provided on the inner sides of both ends of the cable receiving cavity 33. A cable fixing and protective layer 35 made of plastic with a certain hardness and an elastic and frictional cable anti-slip pad layer 36 are provided inside the cable receiving cavity 33. A horizontally extending mating edge 37 is provided at the joint of the upper shell 31 and the lower shell 32. A sealing groove 38 is provided on the lower end face of the mating edge 37 of the upper shell 31, and an elastic sealing strip 39 is provided on the upper end face of the mating edge 37 of the lower shell 32. When the upper shell 31 and lower shell 32 are closed, the elastic sealing strip 39 is pressed into the sealing groove 38 to form a sealing structure. The upper housing 32 and the lower housing 31 are detachably fixed by bolts and nuts. Multiple corresponding pairs of fixing holes are provided on the mating edge 37 of the upper housing 32 and the lower housing 31 outside the elastic sealing strip 39. Bolts pass through the fixing holes and are then fixed by nuts to fix the upper housing 32 and the lower housing 31. The bottom of the lower housing 31 is inserted into the mounting position 24, and the bottom of the mating edge 37 of the lower housing 31 rests on the top of the side wall of the mounting position 24. The top of the side wall of the mounting position 24 is provided with a mating insertion hole 25. The bottom of the mating edge 37 of the lower housing 31 is provided with a mating insertion rod 371 that can be embedded in the mating insertion hole 25. The inner wall of the mating insertion hole 25 is provided with an elastic pad that increases frictional resistance. The mating insertion rod 371 is tightly inserted into the mating insertion hole 25, so that the lower housing 31 is fixed on the mounting position 24.

[0042] The working process of the power cable direct burial protection structure described in this embodiment is as follows:

[0043] When burying cables directly, first level the bottom of the tunnel, lay the plate 11 flat on the tunnel, then insert the ground spike 12 into the positioning hole, press the bottom of the ground spike 12 into the soft soil layer to fix the base plate 1, adjust the mounting seat 2 to the appropriate position, and tighten the locking nut 23 to fix the mounting seat 2.

[0044] The lower housing 31 is fixed to the mounting base 2 by means of mating and inserting the mating rod 371 and the mating hole 25;

[0045] Place the important nodes of the cable 4 that need to be protected into the corresponding half of the cable receiving cavity 33 of the lower housing 31, cover the upper housing 32, and make the mating edges 37 of the upper housing 32 and the lower housing 31 align, and ensure that the elastic sealing strip 39 is pressed into the sealing groove 38 to form an interference fit, and the elastic sealing ring 34 tightly adheres to the outer surface of the cable 4.

[0046] The bolts are passed through the fixing holes on the mating edge 38 and then secured with nuts to press and fix the upper housing 32 and the lower housing 31 together.

[0047] Example 2

[0048] like Figure 6 As shown, the difference between this embodiment and the previous one is that the mounting base 2 and the protective compartment 3 are provided in one or more sets, arranged along the length of the mounting groove 13, and the position of each set of mounting base 2 and protective compartment 3 can be adjusted according to the actual use.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A protective structure for direct burial of power cables, characterized in that, include: The substrate includes a plate body and detachable ground spikes mounted on the plate body; the upper end face of the plate body is provided with a mounting groove; The mounting base has its bottom mounted on the mounting groove, and its position can be adjusted and fixed along the length of the mounting groove; the upper surface of the mounting base is provided with a mounting position. The protective chamber includes a detachable lower housing mounted on the mounting position and an upper housing detachably covered by the lower housing; after the upper housing and the lower housing are closed, they form a cable receiving cavity along the axial direction, and elastic sealing rings are provided on the inner sides of both ends of the cable receiving cavity; the upper housing and the lower housing are provided with horizontally outwardly extending mating edges at their joints, and elastic sealing strips are embedded at the contact surfaces of the mating edges of the two housings.

2. The protection structure for direct burial of power cables according to claim 1, characterized in that: The plate has multiple positioning holes at both ends, and the lower end of the ground spike passes through the positioning holes to fix the base plate to the soil layer.

3. The protection structure for direct burial of power cables according to claim 1, characterized in that: The plate is a cuboid structure. The mounting groove is opened along the length of the upper end face of the plate. The two side walls of the plate along the length direction are provided with sliding grooves that communicate with the mounting groove. The bottom sides of the mounting base are provided with insert plates that insert into the two sliding grooves. The insert plates are provided with positioning studs, and the positioning studs are provided with locking nuts for fixing the position of the mounting base.

4. The protection structure for direct burial of power cables according to claim 1, characterized in that: The mounting position has a semi-circular structure. The bottom of the lower housing is inserted into the mounting position, and the bottom of the mating edge of the lower housing rests on the top of the side wall of the mounting position. The top of the side wall of the mounting position is provided with a mating hole, and the bottom of the mating edge of the lower housing is provided with a mating rod that can be embedded in the mating hole.

5. The protection structure for direct burial of power cables according to claim 1, characterized in that: The upper housing and the lower housing are detachably fixed by bolts and nuts.

6. The protection structure for direct burial of power cables according to claim 1, characterized in that: The cable receiving cavity is equipped with a cable fixing and protective layer and a cable anti-slip pad layer.

7. The protection structure for direct burial of power cables according to claim 1, characterized in that: The upper housing has a sealing groove on the lower end face of the mating edge, and the lower housing has an elastic sealing strip on the upper end face of the mating edge; after the upper housing and the lower housing are closed, the elastic sealing strip is pressed into the sealing groove.

8. The protection structure for direct burial of power cables according to any one of claims 1 to 7, characterized in that: The mounting base and the protective compartment are provided in one or more sets, arranged along the length of the mounting groove.

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