Cable trench support capable of separating strong current from weak current and support system

Abstract

The utility model discloses a cable trench support capable of separating strong current from weak current, which comprises a cable trench and a stress rod, the bottom of the stress rod is fixedly connected with a bottom plate of the cable trench, a reinforcing rod is mounted between the lower part of the stress rod and a side wall of the cable trench, a plurality of cable supports are mounted on two sides of the upper part of the stress rod in a layered manner, and the cable supports are connected with the stress rod. The cable support on one side serves as a strong current line support, and the cable support on the other side serves as a weak current line support. The utility model has the advantages of simple structure, safety, reliability and clear stress, and is particularly suitable for cable trenches with steep slope surfaces, limited space and strong and weak current separation requirements.

Description

Technical Field

[0001] This utility model relates to cable supports for hydropower projects, specifically to a cable trench support and support system that can separate strong and weak current circuits. Background Technology

[0002] An escape corridor for a power plant, which also serves as a cable trench, is located on the rear slope of the plant. The lower part of the corridor connects to the plant, and the top leads to the road leading to the dam. The corridor is approximately 40m long, 2m wide, and 2.5m high, with a steep slope of about 55 degrees. A cable trench is laid in the middle of the corridor, with a net width of 0.5m, a depth of 0.5m, and a sidewall thickness of 0.2m. Steps, approximately 0.55m wide, are located on both sides of the trench. Numerous cables connect to the plant from the dam top, including power cables, communication cables, video cables, monitoring cables, and fire monitoring cables. The trench is narrow, and the existing cable supports cannot be layered, preventing the separation of strong and weak current cables, posing a significant safety hazard. Furthermore, because the cable trench is on a slope, and the power cables are heavy, some existing cable supports have slid under the pressure, causing deformation and posing a safety threat to the power plant's operation. This could even result in electric shock injuries to maintenance personnel and significant economic losses. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a cable trench support and support system that is suitable for installation on steep slopes and can separate strong and weak current.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A cable trench support that can separate high-voltage and low-voltage circuits includes a load-bearing rod installed in the cable trench. The bottom of the load-bearing rod is fixedly connected to the bottom plate of the cable trench. The lower part of the load-bearing rod is fixedly connected to the side wall of the cable trench by a reinforcing rod. Multiple cable supports are installed on both sides of the upper part of the load-bearing rod. The cable supports on one side serve as supports for high-voltage circuits, and the cable supports on the other side serve as supports for low-voltage circuits.

[0006] This invention fixes the bottom of the load-bearing rod to the bottom plate of the cable trench, and the lower part of the load-bearing rod is fixedly connected to the side wall of the cable trench by a reinforcing rod, making it suitable for installation on steep slopes. In addition, this invention installs multiple cable brackets on both sides of the upper part of the load-bearing rod, with one side serving as a high-voltage cable bracket and the other side serving as a low-voltage cable bracket, allowing high-voltage and low-voltage cables to be installed on both sides of the load-bearing rod respectively, thus improving safety.

[0007] A further improvement to the above scheme is that the load-bearing rod is installed perpendicularly to the bottom plate of the cable trench, and the reinforcing rod is installed on the back of the load-bearing rod to facilitate the installation of the cable parallel to the steep slope and maintain sufficient strength.

[0008] A further improvement to the above scheme is that the reinforcing rod is installed 0.4m-0.6m away from the bottom plate of the cable trench, and the reinforcing rod is perpendicular to the force-bearing rod.

[0009] A further improvement to the above solution is that the outer end of the cable bracket is fitted with an insulating protective corner sleeve to provide end insulation for the cable bracket.

[0010] A further improvement to the above solution is that the bottom end of the force-bearing rod is fixedly connected to the base, and the base is fixed to the bottom plate of the cable trench by expansion bolts.

[0011] A further improvement to the above solution is that the load-bearing rod and the cable bracket are made of channel steel, and the reinforcing rod is made of angle steel.

[0012] A further improvement to the above scheme is that 2-4 cable brackets are installed on each side of the force-bearing rod in layers to meet the needs of various cable installations.

[0013] Based on the same inventive concept, this utility model also provides a cable trench support system that can separate strong and weak currents, wherein a set of the cable trench support is installed every 0.5m to 0.8m along the longitudinal direction of the cable trench, and an insulating plate is installed between adjacent load-bearing rods.

[0014] A further improvement to the above solution is that corner clips are installed opposite each other on the front and / or back of the force-bearing rod, and an insulating plate installation space is left between the oppositely installed corner clips, and the insulating plate is inserted into the insulating plate installation space.

[0015] A further improvement to the above solution is that the cable on the cable bracket is fixed to the cable bracket by means of a braided strap.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1) This utility model has a simple, safe, and reliable structure with clear force distribution, overcoming the weaknesses of conventional cable brackets and well meeting functional requirements.

[0018] 2) The cable support of this utility model is a steel structure that can bear the weight of the primary power cable of the power station. It is especially suitable for cable trenches with steep slopes, limited space and requirements for strong and weak separation.

[0019] 3) This utility model can save the cross-sectional size of the cable trench and reduce the project cost by fixing the bottom end of the force-bearing rod to the bottom plate of the cable trench.

[0020] 4) The cable bracket of this utility model adopts steel structure welding assembly, which can effectively improve safety and stability, and has moderate cost, simple installation, convenient operation and maintenance, and has promotion value. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a side view of the cable trench support system of this utility model, which can separate strong and weak current circuits.

[0023] Figure 2 for Figure 1 The AA cross-sectional view is also a structural diagram of the cable trench support that can separate strong and weak currents according to this utility model.

[0024] Figure 3 This is a three-dimensional view of the cable trench support system of this utility model that can separate strong and weak current.

[0025] In the diagram: 1 - load-bearing rod; 2 - cable bracket; 3 - reinforcing rod; 4 - base; 5 - expansion bolt; 6 - insulating protective corner sleeve; 7 - insulating board; 8 - corner clip; 9 - high-voltage line; 10 - low-voltage line; 11 - cable trench; 12 - step; 13 - cable trench side wall. Detailed Implementation

[0026] The present invention will be further described below with reference to specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] 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 mechanical 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.

[0029] Please see Figure 1 - Figure 3 An embodiment of the cable trench support system that can separate strong and weak currents according to this utility model includes multiple cable trench supports installed at intervals of 0.5m to 0.8m along the longitudinal direction of the cable trench 11.

[0030] The cable trench support consists of a single 10-meter-long support beam approximately 1.3m long. # The channel steel serves as the load-bearing rod 1. The bottom end of the load-bearing rod 1 is welded to the base 4, made of iron plate, to form a single unit. It is then fixed to the bottom plate of the cable trench 11 using four expansion bolts 5, ensuring that the load-bearing rod 1 is perpendicular to the bottom plate of the cable trench 11. A 0.8m long expansion bolt 5 is used at the top of the side wall 13 of the cable trench, located 0.5m from the bottom plate. # Angle steel is used as reinforcing rod 3 to strengthen and prevent the load-bearing rod 1 from tipping over. The long side of the reinforcing rod 3 is welded to the back contact area of ​​the load-bearing rod 1, and the short side of the reinforcing rod 3 is fixed to the concrete at the top of the two cable trench side walls 13 using expansion bolts 5. Angle steel is welded to both sides of the load-bearing rod 1 using expansion bolts 5. # ~10 # Cable supports 2 are made of gradually deformed channel steel. Two to four cable supports 2 are installed in layers on each side, with a spacing of 0.2m between cable supports 2 on the same side. Insulating protective corner sleeves 6 are fitted onto the outer ends of the cable supports 2. The number of layers of cable supports 2 on both sides of the load-bearing rod 1 is installed as required. One side of the cable supports 2 is used as a high-voltage line support for installing high-voltage lines 9, and the other side of the cable supports 2 is used as a low-voltage line support for installing low-voltage lines 10.

[0031] L-shaped insulating plate corner clips 8 are installed opposite each other on the front and / or back of the force-bearing rod 1. The short side of the corner clips 8 is welded to the force-bearing rod 1. An insulating plate installation space is left between the oppositely installed corner clips 8. An insulating plate 7 is inserted and installed in the insulating plate installation space.

[0032] For cable trenches 11 with a very steep slope, the high-voltage lines 9 or low-voltage lines 10 on the cable supports 2 can be secured to the cable supports 2 with plastic straps to prevent the cables from slipping. In this embodiment, the slope of the cable trench 11 is 71 degrees, and steps 12 are arranged on both sides of the cable trench 11.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model should fall within the protection scope of the technical solution of this utility model.

Claims

1. A cable trench support capable of separating strong and weak current circuits, comprising a load-bearing rod installed within the cable trench, characterized in that: The bottom of the force-bearing rod is fixedly connected to the bottom plate of the cable trench, and the lower part of the force-bearing rod is fixedly connected to the side wall of the cable trench by a reinforcing rod. Cable brackets are installed on both sides of the upper part of the force-bearing rod, with one side serving as a high-voltage line bracket and the other side serving as a low-voltage line bracket.

2. The cable trench support with strong and weak current separation according to claim 1, characterized in that, The load-bearing rod is installed perpendicularly to the bottom plate of the cable trench, and the reinforcing rod is installed on the back of the load-bearing rod.

3. The cable trench support with strong and weak current separation according to claim 1, characterized in that, The reinforcing rod is installed 0.4m-0.6m away from the bottom plate of the cable trench, and the reinforcing rod is perpendicular to the force-bearing rod.

4. The cable trench support with strong and weak current separation according to claim 1, characterized in that, The outer end of the cable bracket is fitted with an insulating protective corner sleeve.

5. The cable trench support with strong and weak current separation according to claim 1, characterized in that, The bottom end of the force-bearing rod is fixedly connected to the base, and the base is fixed to the bottom plate of the cable trench by expansion bolts.

6. The cable trench support with strong and weak current separation according to claim 1, characterized in that, The load-bearing rod and the cable bracket are made of channel steel, and the reinforcing rod is made of angle steel.

7. The cable trench support with strong and weak current separation according to claim 1, characterized in that, Two to four cable brackets are installed on each side of the load-bearing rod in layers.

8. A cable trench support system capable of separating strong and weak current circuits, characterized in that, A cable trench support as described in any one of claims 1-7 is installed along the longitudinal direction of the cable trench at intervals of 0.5m to 0.8m, and an insulating plate is installed between adjacent load-bearing rods.

9. The cable trench support system with strong and weak current separation according to claim 8, characterized in that, Angle clips are installed opposite each other on the front and / or rear of the force-bearing rod, and an insulating plate is installed between the oppositely installed angle clips. The insulating plate is inserted into the insulating plate installation space.

10. The cable trench support system with strong and weak current separation according to claim 8, characterized in that, The cables on the cable bracket are secured to the cable bracket by bracing.

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