A dimensionally precise MPP cable protection tube

Abstract

This invention provides a precisely sized MPP cable protection tube, belonging to the field of power cable protection technology. It includes a tube body with an adjustment mechanism on its inner wall for limiting a single cable. One side of the adjustment mechanism has a fixing component for securing multiple cables. The invention utilizes the adjustment mechanism to move a strip block to a designated position and then stop. A magnetic block and a steel layer are attracted by magnetism. The cable is then passed between two moving blocks, and a sliding rectangular block, with the magnetic block and magnetic strip engaging, achieves precise positioning of the rectangular block within a groove, securing cables of different sizes. Through the fixing component, when the cable is placed inside the tube, a second spring is compressed, storing elastic potential energy and driving an arc-shaped plate to apply upward pressure, tightly fixing the cable between the inner wall of the tube and the arc-shaped plate. This adaptive adjustment process provides precise pressure and protection for the cable.

Description

Technical Field

[0001] This utility model relates to the field of power cable protection technology, and more specifically, to a precisely sized MPP cable protection tube. Background Technology

[0002] A cable is a conductor assembly used to transmit electrical energy or information. Cables are mainly used for power transmission and signal transmission. They are characterized by internal energization and external insulation to ensure safe and efficient operation. Installing cable protection pipes helps protect cables from external damage, isolate power line interference, improve safety, and extend service life.

[0003] A search revealed that Chinese patent CN218940569U discloses "an MPP cable protection tube adaptable to various cables, comprising a protective tube body, a circular plate installed on the inner wall of the protective tube body, several through holes evenly arranged inside the circular plate, four hidden grooves symmetrically opened on the inner wall of the through holes, sliding grooves symmetrically opened on the inner wall of the hidden grooves, a movable plate installed in the hidden grooves, and the movable plate slidingly connected to the inner wall of the hidden grooves, sliders symmetrically installed on the side of the movable plate, and the sliders located in the sliding grooves, a spring 1 installed in the sliding grooves, the outer end of the spring 1 fixedly connected to the sliding groove, and the inner end of the spring 1 fixedly connected to the slider. This utility model uses the compression deformation of springs 1, 2, and 3 to move the position of the mating plate to a position suitable for the cable size, so that the roller fits the cable. Different sizes of cables can be fixed inside the through holes at different positions, which is highly applicable and prevents multiple cables from gathering together, which is beneficial for cable heat dissipation." However, it still has the following defects:

[0004] (1) Although the protective tube can protect the cable, each through hole can only fix one cable. If multiple cables need to be laid, a sufficient number of through holes need to be reserved. However, the tube diameter is limited, which may limit the number of cables that can be laid at the same time. For thin cables with a diameter much smaller than the through hole, the roller may still not fit tightly after the spring is compressed, resulting in unstable fixing. For ultra-thick cables, the spring compression limit may be exceeded, making installation impossible.

[0005] (2) This design lacks elastic clamping force inside the tube. The cable is prone to displacement due to external vibration (such as construction or vehicle passage) or its own thermal expansion and contraction, which can lead to wear of the outer sheath, damage to the insulation layer, and even short circuit or fire. To address this, a dimensionally precise MPP cable protection tube is proposed. Utility Model Content

[0006] The purpose of this utility model is to address the problem of existing MPP cable protection pipes with precise dimensions. Although these pipes can protect cables, each through hole can only fix one cable. If multiple cables need to be laid, a sufficient number of through holes must be reserved. However, the pipe diameter is limited, which may restrict the number of cables that can be laid at the same time. For thin cables with a diameter much smaller than the through hole, the roller may not be able to fit tightly after the spring is compressed, resulting in unstable fixing. For very thick cables, the spring compression limit may be exceeded, making installation impossible.

[0007] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0008] The present invention is as follows: a precisely sized MPP cable protection tube, comprising a tube body, wherein an adjustment mechanism for limiting a single cable is provided on the inner wall of the tube body, and a fixing component for fixing multiple cables is provided on one side of the adjustment mechanism.

[0009] The adjustment mechanism includes a slide rail formed on the inner wall of the tube, a steel layer on the side wall of the slide rail, a strip block slidably connected to the outside of the slide rail, magnetic blocks fixedly connected to the side walls at both ends of the strip block, a groove formed at the top of the strip block, a magnetic strip fixedly connected to the inner bottom wall of the groove, a rectangular block slidably connected to the top of the groove, a magnetic block fixedly connected to the bottom of the rectangular block, a first spring fixedly connected to the top of the rectangular block, and a moving block fixedly connected to the top of the first spring.

[0010] As a preferred technical solution of this utility model, the fixing component includes a base fixedly connected to the inner wall of the tube, a reserved groove is provided on the top of the base, a moving rod is slidably connected to the inner wall of the reserved groove, a limit block is fixedly connected to the bottom of the moving rod and slidably connected to the reserved groove, a splicing block is fixedly connected to the top of the moving rod, a second spring is fixedly connected to the bottom of the splicing block and the top of the base, and an arc plate is fixedly connected to the top of the splicing block.

[0011] As a preferred technical solution of this utility model, a plurality of connecting blocks are fixedly connected to the outer wall of the tube body, and an outer tube is fixedly connected to the side wall of the connecting blocks.

[0012] As a preferred technical solution of this utility model, a fireproof layer is provided inside the wall of the pipe body, and the fireproof layer is an aluminum hydroxide-based flame-retardant material.

[0013] As a preferred technical solution of this utility model, a PET protective film is provided on the outer wall of the outer tube, a warning strip is provided on the outer wall of the PET protective film, and reflective strips are provided on both sides of the warning strip.

[0014] As a preferred technical solution of this utility model, a plurality of heat dissipation holes are provided on the outer wall of the tube body, and the heat dissipation holes are elliptical in shape.

[0015] As a preferred technical solution of this utility model, rubber pads are provided on the opposite side walls of the movable block, and both the magnetic strip and the magnetic block are permanent magnets.

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

[0017] 1. Through the set adjustment mechanism, the strip block is slid in a straight line along the slide of the inner wall of the tube during use. After adjusting to the designated position, it stops. The magnetic blocks at both ends are magnetically attracted to the steel layer to fix the strip block. Then, the cable is passed between the two moving blocks, and the rectangular block is slid. The magnetic blocks and magnetic strip cooperate to achieve precise positioning of the rectangular block in the slide groove, which can fix cables of different sizes. When external force is applied to the moving block, the first spring plays a buffer protection role. In the scenario of temporary adjustment of cable specifications, there is no need to replace the protective tube. It can be directly adjusted to adapt, avoiding material waste, with strong versatility and reduced use costs.

[0018] 2. With the fixed components in place, when the cable is placed inside the pipe, the second spring is compressed and stores elastic potential energy. The elastic force of the second spring is transmitted to the arc plate through the splicing block, driving the arc plate to apply pressure upwards, and tightly fixing the cable between the inner wall of the pipe and the arc plate. The adaptive adjustment process can accurately apply pressure and protect the cable, prevent the cable from moving inside the pipe, and reduce wear on the cable sheath. Attached Figure Description

[0019] Figure 1 A structural schematic diagram of the MPP cable protection tube with precise dimensions provided by this utility model;

[0020] Figure 2 A schematic diagram of the heat dissipation hole structure of the MPP cable protection tube with precise dimensions provided by this utility model;

[0021] Figure 3 A schematic diagram of the slide and steel layer structure of the MPP cable protection tube with precise dimensions provided by this utility model;

[0022] Figure 4 A partial structural schematic diagram of the adjustment mechanism for the dimensionally precise MPP cable protection tube provided by this utility model;

[0023] Figure 5 A partial structural diagram of the fixing assembly for the dimensionally precise MPP cable protection tube provided by this utility model;

[0024] Figure 6 A schematic diagram of the arc-shaped plate structure of the MPP cable protection tube with precise dimensions provided by this utility model.

[0025] The diagram shows: 1. Pipe body; 2. Adjustment mechanism; 3. Fixing component; 4. Connecting block; 5. Outer pipe; 6. Fireproof layer; 7. PET protective film; 8. Warning strip; 9. Reflective strip; 10. Heat dissipation hole; 11. Rubber pad; 201. Slide rail; 202. Steel layer; 203. Strip block; 204. Magnet block; 205. Slide groove; 206. Magnetic strip; 207. Rectangular block; 208. Magnetic block; 209. First spring; 210. Moving block; 301. Base; 302. Reserved groove; 303. Moving rod; 304. Limiting block; 305. Splicing block; 306. Second spring; 307. Arc plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0027] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] like Figure 1 As shown, this embodiment proposes a precisely sized MPP cable protection tube, including a tube body 1. An adjustment mechanism 2 for limiting a single cable is provided on the inner wall of the tube body 1, and a fixing component 3 for fixing multiple cables is provided on one side of the adjustment mechanism 2.

[0031] like Figure 3 and Figure 4As shown, the adjustment mechanism 2 includes a slide 201 formed on the inner wall of the tube 1. A steel layer 202 is provided on the side wall of the slide 201. A strip block 203 is slidably connected to the outside of the slide 201. The slide 201 provides a linear sliding track for the strip block 203, ensuring accurate adjustment direction and preventing deviation. Magnet blocks 204 are fixedly connected to the side walls at both ends of the strip block 203. The steel layer 202 cooperates with the magnet blocks 204 to magnetically attract and fix the position of the strip block 203, achieving a seamless adjustment. After adjustment and stabilization, the top of the strip block 203 is provided with a groove 205. A magnetic strip 206 is fixedly connected to the inner bottom wall of the groove 205. A rectangular block 207 is slidably connected to the top of the groove 205. The groove 205 provides a sliding track for the rectangular block 207 perpendicular to the axis of the tube body 1. A magnetic block 208 is fixedly connected to the bottom of the rectangular block 207. The magnetic strip 206 cooperates with the magnetic block 208 at the bottom of the rectangular block 207 to achieve precise positioning of the rectangular block 207 within the groove 205. For precise positioning, a first spring 209 is fixedly connected to the top of the rectangular block 207, and a movable block 210 is fixedly connected to the top of the first spring 209. The movable block 210 directly contacts the cable. Through the elastic force of the first spring 209, it can adapt to the slight displacement of the cable. In use, the strip block 203 is slid linearly along the slide 201 on the inner wall of the tube body 1 and stopped after being adjusted to the designated position. The magnetic blocks 204 at both ends are magnetically attracted to the steel layer 202 to fix the strip block 203. Then, the cable is passed between the two movable blocks 210, and the rectangular block 207 is slid. The magnetic blocks 208 and magnetic strips 206 cooperate to achieve precise positioning of the rectangular block 207 in the slide groove 205, which can fix cables of different sizes. When external force is applied to the movable block 210, the first spring 209 plays a buffer protection role. In the scenario of temporary adjustment of cable specifications, there is no need to replace the protective tube. It can be directly adjusted to adapt, avoiding material waste, with strong versatility and reduced use costs.

[0032] like Figure 5 and Figure 6As shown, the fixing assembly 3 includes a base 301 fixedly connected to the inner wall of the tube body 1. The base 301 provides support and an installation reference to ensure structural stability. A reserved groove 302 is provided on the top of the base 301. A moving rod 303 is slidably connected to the inner wall of the reserved groove 302. The reserved groove 302 restricts the moving rod 303 to slide only in the vertical direction to prevent deviation. A limit block 304 is fixedly connected to the bottom of the moving rod 303. The limit block 304 cooperates with the side wall of the reserved groove 302 to prevent the moving rod 303 from sliding completely out of the base 301 and is slidably connected to the reserved groove 302. A splicing block 305 is fixedly connected to the top of the moving rod 303. A second spring 306 is fixedly connected to the bottom of the splicing block 305 and the top of the base 301. An arc-shaped plate 307 is fixedly connected to the tube. A splicing block 305 connects the moving rod 303 to the arc-shaped plate 307, and evenly transmits the elastic force of the second spring 306 to the bottom of the arc-shaped plate 307. The arc-shaped plate 307 is made of flexible material, which can absorb vibration and impact. The second spring 306 provides vertical elastic force by compression or extension, driving the arc-shaped plate 307 to clamp the cable. When the cable is placed in the tube, the second spring 306 is compressed and stores elastic potential energy. The elastic force of the second spring 306 is transmitted to the arc-shaped plate 307 through the splicing block 305, driving the arc-shaped plate 307 to apply upward pressure, and tightly fixing the cable between the inner wall of the tube 1 and the arc-shaped plate 307. The process can be adaptively adjusted to accurately apply pressure and protect the cable, prevent the cable from moving in the tube, and reduce wear on the cable sheath.

[0033] like Figure 1 As shown, several connecting blocks 4 are fixedly connected to the outer wall of the pipe body 1, and an outer pipe 5 is fixedly connected to the side wall of the connecting block 4. The connecting block 4 and the outer pipe 5 together constitute the external reinforcement structure of the pipe body 1, which improves the compressive strength of the pipe. When the pipe body 1 is subjected to external pressure, the outer pipe 5 can disperse the stress to a larger area through the connecting block 4, so as to avoid local deformation or rupture of the pipe body 1.

[0034] like Figure 1 As shown, a fireproof layer 6 is provided inside the wall of the pipe body 1. The fireproof layer 6 is an aluminum hydroxide-based flame retardant material. Aluminum hydroxide decomposes at high temperature, absorbs a large amount of heat, reduces the surface temperature of the pipe, slows down the heating rate of the environment around the cable, and improves the fire safety level of the MPP cable protection pipe.

[0035] like Figure 1 As shown, a PET protective film 7 is installed on the outer wall of the outer tube 5, and a warning strip 8 is installed on the outer wall of the PET protective film 7. Reflective strips 9 are installed on both sides of the warning strip 8. The PET protective film 7 has high hardness and good wear resistance, which can effectively prevent the outer tube 5 from being scratched by sharp objects during transportation, installation or use. The warning strip 8 and reflective strip 9 are clearly visible in underground or concealed environments, reminding construction personnel or subsequent maintenance personnel to pay attention to the location of the cable protection pipe and avoid accidental digging or impact.

[0036] like Figure 2 As shown, multiple heat dissipation holes 10 are provided on the outer wall of the tube body 1. The heat dissipation holes 10 are elliptical in shape. The long axis of the elliptical heat dissipation holes 10 can provide a larger opening area, thereby increasing the channel for air exchange between the inside and outside of the tube and improving the heat dissipation efficiency.

[0037] like Figure 1 As shown, rubber pads 11 are provided on the opposite side walls of the movable block 210. Both the magnetic strip 206 and the magnetic block 208 are permanent magnets. The rubber pads 11 are elastic and can absorb the energy generated by the impact of the cable, reduce the direct friction between the cable and the inner wall of the tube 1, and avoid wear on the cable sheath. The magnetic force of the permanent magnet is not affected by vibration or temperature changes, and can maintain the adsorption force for a long time, preventing the adsorption from loosening due to environmental vibration.

[0038] Specifically, when using this precisely sized MPP cable protection conduit: First, slide the strip block 203 in a straight line along the slide rail 201 on the inner wall of the conduit body 1. Stop when it reaches the designated position. The magnetic blocks 204 at both ends magnetically attract the steel layer 202, thus fixing the strip block 203. Next, pass the cable between the two moving blocks 210, slide the rectangular block 207, and with the cooperation of the magnetic blocks 208 and magnetic strips 206, accurately position the rectangular block 207 within the slide groove 205, thus fixing cables of different sizes (e.g., ...). Figure 3 and Figure 4 (As shown), simultaneously, the second spring 306 is compressed, storing elastic potential energy. The elastic force of the second spring 306 is transmitted to the arc-shaped plate 307 through the splicing block 305, driving the arc-shaped plate 307 to apply upward pressure, tightly fixing the cable between the inner wall of the tube 1 and the arc-shaped plate 307, thus securing the cable (as shown). Figure 5 and Figure 6 (As shown).

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A dimensionally accurate MPP cable protection pipe comprising a pipe body (1), characterized in that, The inner wall of the tube (1) is provided with an adjustment mechanism (2) for limiting a single cable, and a fixing component (3) is provided on one side of the adjustment mechanism (2) to facilitate fixing multiple cables. The adjustment mechanism (2) includes a slide (201) opened on the inner wall of the tube (1), a steel layer (202) is provided on the side wall of the slide (201), a strip block (203) is slidably connected to the outside of the slide (201), a magnet block (204) is fixedly connected to the side wall at both ends of the strip block (203), a groove (205) is opened on the top of the strip block (203), a magnetic strip (206) is fixedly connected to the inner bottom wall of the groove (205), a rectangular block (207) is slidably connected to the top of the groove (205), a magnetic block (208) is fixedly connected to the bottom of the rectangular block (207), a first spring (209) is fixedly connected to the top of the rectangular block (207), and a moving block (210) is fixedly connected to the top of the first spring (209).

2. The dimensionally accurate MPP cable protection tube according to claim 1, characterized in that, The fixing component (3) includes a base (301) fixedly connected to the inner wall of the tube (1). A reserved groove (302) is provided on the top of the base (301). A moving rod (303) is slidably connected to the inner wall of the reserved groove (302). A limit block (304) is fixedly connected to the bottom of the moving rod (303) and slidably connected to the reserved groove (302). A splicing block (305) is fixedly connected to the top of the moving rod (303). A second spring (306) is fixedly connected to the bottom of the splicing block (305) and the top of the base (301). An arc plate (307) is fixedly connected to the top of the splicing block (305).

3. The dimensional accurate MPP cable protection pipe according to claim 1, characterized in that, Several connecting blocks (4) are fixedly connected to the outer wall of the tube body (1), and an outer tube (5) is fixedly connected to the side wall of the connecting block (4).

4. The dimensional accurate MPP cable protection pipe according to claim 1, characterized in that, The inner wall of the pipe body (1) is provided with a fireproof layer (6), which is an aluminum hydroxide-based flame retardant material.

5. The dimensionally accurate MPP cable protection tube according to claim 3, characterized in that, A PET protective film (7) is provided on the outer wall of the outer tube (5), and a warning strip (8) is provided on the outer wall of the PET protective film (7). Reflective strips (9) are provided on both sides of the warning strip (8).

6. The dimensional accurate MPP cable protection pipe according to claim 1, characterized in that, The outer wall of the tube (1) is provided with a plurality of heat dissipation holes (10), and the heat dissipation holes (10) are elliptical in shape.

7. The dimensional accurate MPP cable protection pipe according to claim 1, characterized in that, Rubber pads (11) are provided on the opposite side walls of the movable block (210), and the magnetic strip (206) and magnetic block (208) are both permanent magnets.

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