Novel MPP cable protection pipe

Abstract

The utility model discloses a novel MPP cable protection tube, which relates to the technical field of wire protection, and comprises a hinge piece and two protection half tubes, and the two protection half tubes are mutually hinged through the hinge piece. By adopting the above structure, during the application of the device, a wire is placed on the inner sides of the two protective half tubes, the protective half tubes are quickly spliced and fixed by rotating the mounting screw rod to be embedded into the limiting holes of the fixing plate, the external fixing screw rod rotates to drive the inner clamping plate to move along the guide supporting rod in the aspect of wire clamping, and accurate control is realized by utilizing thread transmission. The V-shaped clamping groove in the inner clamping plate is matched with the fixed screw, the inclined face of the V-shaped clamping groove can be attached to wires with different diameters, centered positioning and firm fixing are achieved, during dismounting, the screw is rotated reversely, components can be separated, no special tool is needed, the maintenance cost is reduced, the design guarantees that the wires are installed stably, fast dismounting is achieved through a standard interface, and the dismounting efficiency is improved. And electric power facility maintenance requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of wire protection technology, and specifically relates to a novel MPP cable protection pipe. Background Technology

[0002] Currently, in power engineering construction, MPP power cable protection pipes, made primarily of modified polypropylene, possess characteristics such as high temperature resistance and external pressure resistance, making them a common choice for medium and low voltage power transmission cable ducts below 10KV. They are divided into open-cut and trenchless types, the latter also known as MPP jacking pipes or drag pipes. In existing technologies, such as the anti-collision type MPP power cable protection pipe disclosed in patent application number CN212991863U, although it can effectively unload impact force through a buffer mechanism design, reduce the risk of pipe breakage, improve anti-collision and anti-impact performance, protect internal cables, and extend service life;

[0003] However, this technology still has limitations. First, the integrated structure of the inner and outer tubes requires complete replacement when the outer tube wears down, and disassembly necessitates disconnecting one end of the cable, making the operation cumbersome and maintenance costly. Second, the lack of external support structure makes it difficult to quickly adjust and securely install, failing to meet the needs of different working conditions in complex construction environments. Third, the inability to quickly adjust and position the internal wires may affect the stable protection of the cable and the safety of power transmission. These problems limit the application effect and efficiency of MPP power cable protection pipes and urgently require improvement and optimization. Utility Model Content

[0004] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a new type of MPP cable protection pipe to solve the problems of inconvenient and inflexible disassembly and replacement during the application of the prior art, as well as the problem of quick and convenient clamping and fixing of wires.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A novel MPP cable protection pipe includes a hinge and two protective half-tubes. The two protective half-tubes are hinged together by the hinge. A support mechanism is fixedly installed on the outer side of each protective half-tube. The inner end of the support mechanism extends through the protective half-tube and into its interior. Fixing plates are fixedly installed at both ends of the bottom of each of the two protective half-tubes. A limit hole is opened at the lower end of one fixing plate, and a mounting screw is threaded to the lower end of the other fixing plate. The end of the mounting screw passes through the fixing plate and is inserted into the limit hole.

[0007] The support mechanism includes a mounting frame, an inner clamping assembly is installed in the middle of the mounting frame, the end of the inner clamping assembly extends through the protective half-tube and into the interior of the protective half-tube, a mounting plate is fixedly installed at the bottom of the mounting frame, and a support component is fixedly installed at the bottom of the mounting plate.

[0008] As a preferred technical solution, the mounting screw is a hand-tightening screw, and the external corners of the fixing plate, the protective half-pipe, and the hinge are all rounded.

[0009] As a preferred technical solution, the inner clamping assembly includes a fixing screw, which is threadedly connected to the middle of the mounting bracket. The end of the fixing screw passes through the protective half-pipe and is rotatably connected to an inner clamping plate. The inner side of the inner clamping plate is provided with a clamping groove.

[0010] As a preferred technical solution, the overall cross-sectional shape of the clamping groove is V-shaped, and the fixing screw is also a hand-tightening screw.

[0011] As a preferred technical solution, guide rods are fixedly installed at both ends of the outer side of the inner clamping plate, and the outer ends of the guide rods penetrate the protective half-tube.

[0012] As a preferred technical solution, the support assembly includes a support rod, which is fixedly installed on the bottom of the mounting plate. A sleeve is fitted on the outer surface of the support rod. The cross-sectional shape of the internal cavity of both the support rod and the sleeve is set to a regular hexagon. A limit screw is threaded to the upper outer side of the sleeve. The end of the limit screw penetrates through the sleeve. A mounting base is fixedly installed at the bottom of the sleeve. Mounting holes are opened at both ends of the mounting base. The mounting holes are countersunk holes.

[0013] As a preferred technical solution, the support rod has locking holes arranged linearly at equal intervals on one side, and the end of the limiting screw is inserted into the inner side of the locking hole. The limiting screw is also configured as a hand-tightening screw.

[0014] In summary, the present invention has the following main advantages:

[0015] First, the support mechanism of this device adopts a modular design, which effectively realizes the rapid installation and stable protection of wires. When in use, the wire is placed inside the two protective half tubes, and the protective half tubes are quickly spliced ​​and fixed by rotating the installation screw into the limiting hole of the fixing plate. In terms of wire clamping, the rotation of the external fixing screw drives the inner clamping plate to move along the guide rod. The screw drive is used for precise control. The V-shaped clamping groove on the inner clamping plate cooperates with the fixing screw. Its inclined surface can fit wires of different diameters to achieve centered positioning and firm fixation. When disassembling, the components can be separated by rotating the screw in the opposite direction. No special tools are required, reducing maintenance costs.

[0016] Secondly, during the application of this device, its support components, with their telescopic structure and dual fixing mechanism, enhance the device's environmental adaptability and installation reliability. After the wire is clamped, the adjusting sleeve can slide on the support rod to adjust the length of the support structure, adapting to different spans of wire installation. After adjustment, tighten the limit screw to make the sleeve and support rod rigidly connected. The standard mounting holes at both ends of the mounting base plate are compatible with various specifications of bolts, enabling quick fixation to walls and other carriers to build an overhead or wall-mounted support system, protecting the wire connection points of the semi-conduit-covered wires and resisting environmental corrosion. Combined with the high-strength support and modular design of the support components, the maintenance process is simplified, making it suitable for various power engineering scenarios. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a bottom view structural diagram of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of this utility model in its open state, viewed from below.

[0020] Figure 4 This is a top view schematic diagram of the support mechanism of this utility model;

[0021] Figure 5 This is a bottom view schematic diagram of the support mechanism of this utility model.

[0022] Reference numerals: 1. Hinge; 2. Protective half-tube; 3. Mounting screw; 4. Fixing plate; 5. Limiting hole; 6. Support mechanism; 61. Mounting bracket; 62. Inner clamping assembly; 621. Fixing screw; 622. Inner clamping plate; 623. Clamping groove; 624. Guide rod; 63. Mounting plate; 64. Support assembly; 641. Support rod; 642. Sleeve; 643. Limiting screw; 644. Mounting base plate; 645. Mounting hole; 646. Locking hole. Detailed Implementation

[0023] Example

[0024] refer to Figures 1 to 5 This embodiment of a novel MPP cable protection pipe includes a hinge 1 and two protective half-pipes 2. The two protective half-pipes 2 are hinged to each other by the hinge 1. A support mechanism 6 is fixedly installed on the outside of the protective half-pipe 2. The inner end of the support mechanism 6 extends through the protective half-pipe 2 and into its interior. Fixing plates 4 are fixedly installed at both ends of the bottom of the two protective half-pipes 2. A limit hole 5 is opened at the lower end of one fixing plate 4. A mounting screw 3 is threadedly connected to the lower end of the other fixing plate 4. The end of the mounting screw 3 passes through the fixing plate 4 and is inserted into the interior of the limit hole 5.

[0025] The support mechanism 6 includes a mounting frame 61, with an inner clamping assembly 62 installed in the middle of the mounting frame 61. The end of the inner clamping assembly 62 extends through the protective half-tube 2 and into its interior. A mounting plate 63 is fixedly installed at the bottom of the mounting frame 61, and a support component 64 is fixedly installed at the bottom of the mounting plate 63. During operation of the new MPP cable protection pipe, the cable is placed between two mutually hinged protective half-tubes 2, and the protective half-tubes 2 are closed by rotating them. Then, the mounting screw 3 is screwed into the limiting hole 5 of the fixing plate 4 to achieve splicing and fixing of the two protective half-tubes 2. In the support mechanism 6, the length and position of the support component 64 can be adjusted to allow it to be aligned with the external... The support surface is firmly connected, thus providing support for the protective tube. At the same time, by operating the inner clamping assembly 62, the inner clamping plate 622 of the inner clamping assembly 62 is driven to move along a specific path by rotating the fixing screw 621 and other components in the inner clamping assembly 62. Utilizing the principle of threaded transmission, the inner clamping plate 622 is precisely displaced. The V-shaped clamping groove 623 on the inner clamping plate 622, in conjunction with the fixing screw 621, can adaptively fit cables of different diameters. Symmetrical compression is used to achieve centered positioning and firm clamping of the cable. In this way, the protective tube can not only stably install the cable, but also form a reliable connection with the outside through the support assembly 64, providing good protection and support for the cable.

[0026] refer to Figures 1-5The support assembly 64 includes a support rod 641, which is fixedly installed on the bottom of the mounting plate 63. A sleeve 642 is fitted onto the outer surface of the support rod 641. The cross-sectional shape of the internal cavity of both the support rod 641 and the sleeve 642 is set as a regular hexagon. A limit screw 643 is threaded to the upper outer side of the sleeve 642. The end of the limit screw 643 penetrates the sleeve 642. A mounting base plate 644 is fixedly installed at the bottom of the sleeve 642. Mounting holes 645 are opened at both ends of the mounting base plate 644. The mounting holes 645 are countersunk holes. A locking hole 646 is linearly arranged at equal intervals on one side of the support rod 641. The end of the limit screw 643 is inserted into the inside of the locking hole 646. The limit screw 643 is also a hand-tightening screw. During the use of this device, when installing new MPP cable protection pipes, the support assembly 64 achieves flexible support and stable installation through the cooperation of multiple components. Because the support rod 641 and the sleeve 642 are fixedly installed on the outer surface of the sleeve 641, the support assembly 641 provides flexible support and stable installation through the cooperation of multiple components. 2. The internal cavity is a regular hexagon. When the two are fitted together, the sleeve 642 can slide along the axial direction of the support rod 641. At the same time, the regular hexagonal structure restricts relative rotation, ensuring stable expansion and contraction. According to the actual installation requirements, the support length can be adjusted by hand-tightening the limit screw 643: loosen the limit screw 643 so that its end is disengaged from the locking hole 646, and the sleeve 642 can slide freely to adjust the relative position with the support rod 641, changing the overall length of the support assembly 64; after adjustment, tighten the limit screw 643 so that its end is inserted into the corresponding locking hole 646 to fix the sleeve 642 and the support rod 641. It has been tested and can withstand a large lateral tensile force. The countersunk hole design at the bottom of the mounting base plate 644 makes it convenient to use countersunk bolts to fix it to the carrier such as the wall and utility pole. The screw head is recessed into the hole, which not only ensures the flatness of the mounting surface, but also enhances the installation firmness, so that the entire support assembly 64 stably supports the protective pipe and meets the installation requirements of different power engineering scenarios.

[0027] refer to Figures 1-5The inner clamping assembly 62 includes a fixing screw 621, which is threadedly connected to the middle of the mounting bracket 61. The end of the fixing screw 621 passes through the protective half-tube 2 and is rotatably connected to an inner clamping plate 622. The inner side of the inner clamping plate 622 has a clamping groove 623, which has a V-shaped cross-section. The fixing screw 621 is also a hand-tightening screw. Guide rods 624 are fixedly installed at both ends of the outer side of the inner clamping plate 622. The outer ends of the guide rods 624 pass through the protective half-tube 2. During use, when it is necessary to fix the cable, the operator can directly rotate the hand-tightening fixing screw 621 by hand. Since the fixing screw 621 is threadedly connected to the middle of the mounting bracket 61, as the screw rotates, the screw is displaced along the thread direction, driving the end connected to the inner clamping plate 622 to rotate. The inner clamping plate 622 moves, and the guide rods 624 at both ends of the outer side of the inner clamping plate 622 penetrate the protective half tube 2, providing guidance and support for the movement of the inner clamping plate 622, ensuring that the inner clamping plate 622 smoothly approaches the cable in a straight line and avoids deviation. The inner side of the inner clamping plate 622 has a V-shaped clamping groove 623, whose inclined structure can adaptively fit cables of different diameters. As the fixing screw 621 continues to rotate, the inner clamping plate 622 moves closer and closer, and the V-shaped clamping groove 623 symmetrically squeezes the cable from both sides, firmly clamping the cable in the middle, achieving stable fixation of the cable. When disassembling or adjusting the cable, the fixing screw 621 is rotated in the opposite direction, and the inner clamping plate 622 moves outward with the assistance of the guide rods 624, releasing the clamp on the cable. The operation is convenient and efficient.

[0028] refer to Figures 1-3 The mounting screw 3 is a hand-tightening screw. The external corners of the fixing plate 4, protective half-tubes 2, and hinge 1 are all rounded. When using this new type of MPP cable protection pipe, the hand-tightening mounting screw 3 allows for quick and easy operation by hand without the need for additional tools. After the two protective half-tubes 2 are closed around the hinge 1, simply rotating the mounting screw 3 allows its end to quickly pass through the fixing plate 4 and insert into the limiting hole 5, completing the tight connection of the two protective half-tubes 2. For disassembly, simply rotating the mounting screw 3 in the opposite direction allows for easy... The outer corners of the fixing plate 4, the protective half-pipe 2, and the hinge 1 are designed to be rounded. On the one hand, this can effectively prevent construction personnel from being scratched by sharp corners during handling and installation, thus improving operational safety. On the other hand, the rounded structure can reduce stress concentration when the protective pipe collides with external objects in complex environments, reducing the risk of damage or cracking at the corners due to collisions, extending the service life of the protective pipe, and also reducing scratch damage to other surrounding equipment and pipelines, ensuring the safety of the construction site and the integrity of the equipment.

[0029] Operating principle and advantages: The support mechanism 6 of this device, through modular design, achieves rapid installation and stable protection of the wire. In use, the wire is placed inside the two protective half-tubes 2, and the mounting screw 3 is rotated to embed it into the limiting hole 5 of the fixing plate 4, forming a mechanical locking structure, quickly completing the splicing and fixing of the protective half-tubes 2. In the wire clamping stage, the rotation of the external fixing screw 621 drives the inner clamping plate 622 to move inward along the guide rod 624, achieving precise displacement control using the threaded transmission principle. The V-shaped clamping groove 623 on the inner clamping plate 622... The fixing screw 621 works in concert, and its inclined structure can adaptively fit wires of different diameters. It achieves centered positioning through symmetrical compression, and can firmly fix both thin-diameter signal wires and thick-diameter power cables. When disassembling, simply rotate the installation screw 3 and the fixing screw 621 in the opposite direction to quickly separate the protective half tube 2 from the inner clamping plate 622. No special tools are required, which significantly reduces maintenance time and costs. This design not only ensures the stability of wire installation, but also enables quick disassembly and assembly through standardized interfaces, meeting the efficient needs of daily maintenance and fault diagnosis of power facilities.

[0030] The support assembly 64, through its telescopic structure and dual fixing mechanism, enhances the environmental adaptability and installation reliability of the device. After the wire is clamped and fixed, the adjusting sleeve 642 can slide freely along the support rod 641. By changing the overlap length between the two, the support structure can be flexibly extended from 0.5 to 3 meters to adapt to the wire erection requirements of different spans. After the length adjustment is completed, tightening the limiting screw 643 will make the sleeve 642 and the support rod 641 form a rigid connection. Tests have shown that it can withstand lateral tensile forces of over 800N, ensuring support stability. During installation, the standard mounting holes 645 at both ends of the mounting base plate 644 can be matched with bolts of M6-M12 specifications, allowing for quick fixation to carriers such as walls and utility poles, thus constructing a stable overhead or wall-mounted support system. In addition, the protective design of the half-pipe 2 covering the wire connection points can effectively resist environmental erosion such as mechanical impact, sun and rain. Combined with the high-strength support of the support component 64, it can not only protect the vulnerable parts of the wires, but also simplify the maintenance process through modular disassembly and assembly design, making it particularly suitable for scenarios such as urban power grid transformation and outdoor power facility installation.

Claims

1. A novel MPP cable protection conduit, comprising a hinge (1) and two protective half-pipes (2), characterized in that: The two protective half-tubes (2) are hinged to each other by a hinge (1). A support mechanism (6) is fixedly installed on the outside of the protective half-tube (2). The inner end of the support mechanism (6) extends through the protective half-tube (2) and into its interior. Fixing plates (4) are fixedly installed at both ends of the bottom of the two protective half-tubes (2). A limiting hole (5) is opened at the lower end of one fixing plate (4). A mounting screw (3) is threaded to the lower end of the other fixing plate (4). The end of the mounting screw (3) passes through the fixing plate (4) and is inserted into the limiting hole (5). The support mechanism (6) includes a mounting frame (61), an inner clamping assembly (62) is mounted in the middle of the mounting frame (61), the end of the inner clamping assembly (62) extends through the protective half tube (2) and into the interior of the protective half tube (2), a mounting plate (63) is fixedly mounted at the bottom of the mounting frame (61), and a support component (64) is fixedly mounted at the bottom of the mounting plate (63).

2. The novel MPP cable protection pipe according to claim 1, characterized in that: The mounting screw (3) is a hand-tightening screw, and the outer corners of the fixing plate (4), the protective half-pipe (2) and the hinge (1) are all rounded.

3. The novel MPP cable protection pipe according to claim 1, characterized in that: The inner clamping assembly (62) includes a fixing screw (621), which is threaded to the middle of the mounting bracket (61). The end of the fixing screw (621) passes through the protective half tube (2) and is rotatably connected to an inner clamping plate (622). The inner clamping plate (622) has a clamping groove (623) on its inner side.

4. A novel MPP cable protection pipe according to claim 3, characterized in that: The clamping groove (623) has a V-shaped cross-section, and the fixing screw (621) is also a hand-tightening screw.

5. A novel MPP cable protection pipe according to claim 4, characterized in that: Guide rods (624) are fixedly installed at both ends of the outer side of the inner clamping plate (622), and the outer ends of the guide rods (624) penetrate the protective half tube (2).

6. A novel MPP cable protection pipe according to claim 1, characterized in that: The support assembly (64) includes a support rod (641), which is fixedly installed on the bottom of the mounting plate (63). A sleeve (642) is fitted on the outer surface of the support rod (641). The cross-sectional shape of the internal cavity of the support rod (641) and the sleeve (642) is set as a regular hexagon. A limit screw (643) is threaded to the upper outer side of the sleeve (642). The end of the limit screw (643) penetrates the sleeve (642). A mounting base plate (644) is fixedly installed at the bottom of the sleeve (642). Mounting holes (645) are opened at both ends of the mounting base plate (644). The mounting holes (645) are countersunk holes.

7. A novel MPP cable protection pipe according to claim 6, characterized in that: The support rod (641) has locking holes (646) arranged linearly at equal intervals on one side. The end of the limiting screw (643) is inserted into the inside of the locking hole (646). The limiting screw (643) is also a hand-tightening screw.

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