Power cable protection tube facilitating donning
Patent Information
- Application Number
- CN202521848247.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-29
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-08-29
AI Technical Summary
[0003]套装难度大:一体式保护管需从电缆端部整体穿套,对于已敷设部分电缆或长度较长的电缆,穿套过程需多人协作,不仅耗费大量人力与时间,还易因摩擦导致电缆外绝缘层破损,增加安全隐患,密封性与固定性不足:部分分体式保护管虽降低了套装难度,但拼接处缺乏有效的密封结构,地下土壤中的水分、腐蚀性物质易渗入管内,导致电缆锈蚀;同时,管内未设置电缆定位机构,电缆在管内易因振动、土壤沉降发生位移,长期摩擦会破坏绝缘层,引发短路故障,传统保护管之间的连接多依赖法兰或胶水粘接,法兰连接需精准对齐螺栓孔,操作繁琐;胶水粘接受环境温度、湿度影响大,长期使用易出现脱胶,导致连接处密封失效,且难以实现多段保护管的快速拼接,影响施工效率
[0013]1、与现有技术相比,套装便捷性显著提升,采用上护管与下护管的分体式结构,通过螺杆与第一螺母实现快速拼接,无需从电缆端部穿套,可直接在电缆敷设路径上进行组装,大幅降低施工难度与人力成本,尤其适用于已敷设电缆的后期防护改造。
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Figure CN224669365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary equipment technology for power engineering, and in particular to a power cable protection tube that is easy to install. Background Technology
[0002] Power cable protection pipes are crucial components for ensuring the safe laying and operation of cables. Traditional protection pipes are mostly one-piece hollow structures. When installing cables, one end of the cable must be inserted into the pipe from one end and exited from the other. This process is often difficult due to the length and weight of the cable, especially in confined spaces or complex laying paths, resulting in extremely low installation efficiency. Furthermore, the fixed inner diameter of traditional protection pipes cannot accommodate cables of different diameters. When the cable diameter deviates significantly from the pipe's inner diameter, problems such as cable swaying or the pipe being unable to accommodate the cable can occur, requiring the use of additional protection pipes of different specifications, increasing construction costs and inventory pressure. In power engineering construction, power cables, as the core carrier of electrical energy transmission, directly affect the stability of the power supply system. Traditional power cable protection pipes, mostly one-piece structures, have the following core problems:
[0003] The installation process is challenging: Integrated protective conduits require threading the entire cable through the end. For partially laid or long cables, this process necessitates multiple people working together, consuming significant manpower and time. Friction can also damage the cable's outer insulation, increasing safety hazards. Insufficient sealing and fixation: While some split-type protective conduits reduce installation difficulty, the joints lack effective sealing structures, allowing moisture and corrosive substances from the underground soil to seep into the conduit, causing cable corrosion. Furthermore, the lack of cable positioning mechanisms within the conduit allows for cable displacement due to vibration and soil settlement, leading to long-term friction that can damage the insulation and cause short circuits. Traditional protective conduit connections often rely on flanges or adhesive bonding. Flange connections require precise alignment of bolt holes, making the process cumbersome. Adhesive bonding is greatly affected by ambient temperature and humidity, and long-term use can lead to delamination, resulting in sealing failure at the joints. Moreover, rapid splicing of multiple protective conduit sections is difficult, impacting construction efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide a power cable protection pipe that is easy to install, which can reduce the difficulty of cable installation, improve the sealing performance of the pipe and the stability of cable fixing, and realize the flexible connection of multiple protection pipes, thus solving the pain points of traditional protection pipes in construction and use.
[0005] To achieve the above objectives, a power cable protection tube that is easy to install is provided, including an upper protective tube and a lower protective tube, wherein a fixing plate is fixedly connected to both sides of the upper and lower protective tubes respectively;
[0006] A connecting plate is fixedly connected to the top of the lower protective tube, and a base is fixedly connected to the top of the connecting plate. Two sliding grooves are provided at the top of the base, and four sliding plates are slidably connected inside the two sliding grooves.
[0007] According to the aforementioned easy-to-install power cable protection pipe, a screw is provided at the center end of the two fixing plates, the outer surface of the screw penetrates the fixing plate, and the two ends of the screw are threaded with a first nut.
[0008] According to the aforementioned easy-to-assemble power cable protection tube, two clamping plates are fixedly connected to the top of the four slide plates.
[0009] According to the aforementioned power cable protection tube that is easy to install, the top and bottom ends of the two clamping plates are respectively fixedly connected with elastic rings, the center end of the elastic ring is provided with a bolt and the bolt passes through the two elastic rings, and the other end of the bolt is threadedly connected with a second nut.
[0010] According to the aforementioned power cable protection pipe that is easy to install, a sealing strip is provided at the connection between the upper and lower protective pipes.
[0011] According to the aforementioned power cable protection pipe that is easy to install, one end of the upper and lower protective pipes is provided with a clamp structure, and one end of the upper and lower protective pipes is provided with a rubber ring.
[0012] This utility model has the following beneficial effects:
[0013] 1. Compared with existing technologies, the kit offers significantly improved convenience. It adopts a split structure of upper and lower protective tubes, and can be quickly spliced by screws and the first nut. It does not require the cable end to be threaded through, and can be assembled directly on the cable laying path, greatly reducing construction difficulty and labor costs. It is especially suitable for the later protection and renovation of already laid cables.
[0014] 2. Compared with existing technologies, the sealing and fixing performance are optimized in two ways. The sealing strip at the splice and the rubber ring at the joint form a double sealing structure, effectively isolating external impurities and moisture. The clamping plate inside the pipe can be self-adjusted through the sliding groove and the tension ring, which can fix cables of different diameters and avoid cable displacement and wear, significantly improving the reliability of the protective pipe and the safety of cable operation. The connection is more flexible, and the clamp structure at the end can realize the quick docking of multiple sections of the protective pipe without the need for precise alignment of bolt holes or reliance on glue. The operation is simple and the connection is firm, adapting to the laying needs of cables of different lengths and improving construction efficiency. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0016] Figure 1This is a schematic diagram of the overall structure of a power cable protection tube that is easy to install according to this utility model;
[0017] Figure 2 This is a schematic diagram of the screw of a power cable protection tube that is easy to install according to this utility model;
[0018] Figure 3 This is a diagram of the lower protective tube of a power cable protection tube that is easy to install according to this utility model;
[0019] Figure 4 This is a schematic diagram of structure A of a power cable protection tube that is easy to install according to this utility model.
[0020] Legend:
[0021] 1. Upper protective tube; 2. Lower protective tube; 3. Sealing strip; 4. Screw; 5. Fixing plate; 6. First nut; 7. Clamp structure; 8. Connecting plate; 9. Base; 10. Slide groove; 11. Slide plate; 12. Clamping plate; 13. Bolt; 14. Tensioner ring; 15. Second nut; 16. Rubber ring. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] Reference Figure 1-4 This utility model provides a power cable protection pipe that is easy to install. It includes an upper protective pipe 1 and a lower protective pipe 2. Fixing plates 5 are fixedly connected to both sides of the upper protective pipe 1 and the lower protective pipe 2. A screw 4 is provided at the center end of the two fixing plates 5. The outer surface of the screw 4 passes through the fixing plates 5. The two ends of the screw 4 are threaded with first nuts 6. A sealing strip 3 is provided at the connection between the upper protective pipe 1 and the lower protective pipe 2. The upper protective pipe 1 is aligned with the lower protective pipe 2, and the screw 4 is tightly fixed to the two fixing plates 5 by the first nuts 6, which can fix the upper protective pipe 1 and the lower protective pipe 2. The sealing strip 3 is used to seal the gap between the upper protective pipe 1 and the lower protective pipe 2, which improves the sealing performance of the protection pipe and prevents impurities such as soil and groundwater from entering the pipe body.
[0024] The above structure significantly improves the ease of assembly. It adopts a split structure of upper protective tube 1 and lower protective tube 2, which can be quickly spliced by screw 4 and first nut 6. It does not require the cable end to be sleeved and can be assembled directly on the cable laying path, greatly reducing the construction difficulty and labor costs. It is especially suitable for the later protection and renovation of already laid cables. The split design and bolt 13 fixation realize the rapid assembly of the protective tube, which solves the problem of difficult sleeving of traditional integrated protective tubes. At the same time, the setting of sealing strip 3 greatly improves the sealing performance of the tube body.
[0025] A connecting plate 8 is fixedly connected to the top of the lower protective tube 2. A base 9 is fixedly connected to the top of the connecting plate 8. Two sliding grooves 10 are provided at the top of the base 9. Four sliding plates 11 are slidably connected inside the two sliding grooves 10. Two clamping plates 12 are fixedly connected to the top of the four sliding plates 11. Tensioning rings 14 are fixedly connected to the top and bottom of the two clamping plates 12 respectively. A bolt 13 is provided at the center end of the tensioning ring 14 and passes through the two tensioning rings 14. A second nut 15 is threaded to the other end of the bolt 13. The bolt 13 is passed through the two tensioning rings 14 and the other end of the bolt 13 is tightened with the second nut 15. The sliding plate 11 will move with the sliding groove 10, which will drive the two clamping plates 12 to move closer and fix the cable, so as to prevent the cable from being damaged or affecting the operation safety due to displacement or shaking. A clamp structure 7 is provided at one end of the upper protective tube 1 and the lower protective tube 2, which can realize multiple connections of the protective tube. A rubber ring 16 is provided at one end of the upper protective tube 1 and the lower protective tube 2, which can realize the sealing of the connection of the protective tube.
[0026] The above structure optimizes both sealing and fixation. The sealing strip 3 at the splice and the rubber ring 16 at the joint form a double sealing structure, effectively isolating external impurities and moisture. The clamping plate 12 inside the pipe can be adaptively adjusted through the sliding groove 10 and the tension ring 14, which can fix cables of different diameters and prevent cable displacement and wear, significantly improving the reliability of the protective pipe and the safety of cable operation. It also offers greater connection flexibility. The clamping structure 7 at the end can achieve rapid docking of multiple protective pipe sections without the need for precise alignment of bolts 13 or reliance on glue. The operation is simple and the connection is firm, adapting to the laying needs of cables of different lengths and improving construction efficiency. The adjustable clamping mechanism achieves stable fixation of cables of different diameters, preventing cable displacement and wear. At the same time, the cooperation between the clamping structure 7 and the rubber ring 16 enables rapid docking of multiple protective pipe sections, improving construction flexibility and connection sealing.
[0027] Working principle: This is a power cable protection pipe that is easy to install. When using it, clean the cable laying path, place the lower protective pipe 2 in the preset position, check whether the sealing strip 3 and rubber ring 16 are intact, ensure that the clamping plate 12 is in the open state and the second nut 15 is not tightened, place the cable on the base 9 of the lower protective pipe 2, cover the upper protective pipe 1, align the two fixing plates 5, insert the screw 4 and tighten the first nut 6 to complete the splicing and initial sealing of the upper and lower protective pipes 2, tighten the second nut 15, and pull the clamping plate 12 along the slide groove 10 through the tension ring 14 until the clamping plate 12 tightly fixes the cable, stop tightening, align the ends of the adjacent protective pipes, insert the rubber ring 16, put on the clamping structure 7 and tighten it to complete the connection of multiple protective pipes, check whether the protective pipe splice, cable fixing and multi-pipe connection are firmly sealed, and after confirming that there are no problems, backfill the soil or carry out subsequent facilities.
[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A power cable protection conduit that is easy to install, characterized in that, It includes an upper protective tube (1) and a lower protective tube (2), and fixing plates (5) are fixedly connected to both sides of the upper protective tube (1) and the lower protective tube (2); The top end of the lower protective tube (2) is fixedly connected to a connecting plate (8), and the top end of the connecting plate (8) is fixedly connected to a base (9). The top end of the base (9) is provided with two sliding grooves (10), and four sliding plates (11) are slidably connected inside the two sliding grooves (10).
2. The power cable protection conduit for easy installation according to claim 1, characterized in that, The two fixing plates (5) are provided with screws (4) at their center ends. The outer surface of the screws (4) passes through the fixing plates (5). The two ends of the screws (4) are threaded with first nuts (6).
3. The power cable protection conduit for easy installation according to claim 1, characterized in that, Two clamping plates (12) are fixedly connected to the top of the four said skateboards (11).
4. The power cable protection conduit for easy installation according to claim 3, characterized in that, The top and bottom ends of the two clamping plates (12) are respectively fixedly connected with elastic rings (14), and the center end of the elastic rings (14) is provided with bolts (13) and the bolts (13) pass through the two elastic rings (14). The other end of the bolts (13) is threadedly connected with a second nut (15).
5. A power cable protection conduit for easy installation according to claim 1, characterized in that, A sealing strip (3) is provided at the connection between the upper protective tube (1) and the lower protective tube (2).
6. A power cable protection conduit for easy installation according to claim 1, characterized in that, One end of the upper protective tube (1) and the lower protective tube (2) is provided with a clamp structure (7), and one end of the upper protective tube (1) and the lower protective tube (2) is provided with a rubber ring (16).