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CN-224233294-U - External reinforcing rib PVC electrical bushing

CN224233294UCN 224233294 UCN224233294 UCN 224233294UCN-224233294-U

Abstract

The utility model discloses an external reinforcing rib PVC electrical bushing which comprises a core pipe, wherein a reinforcing outer pipe is arranged on the surface of the core pipe, external spiral reinforcing ribs are uniformly arranged on the surface of the reinforcing outer pipe, each external spiral reinforcing rib comprises a thick spiral rib and a thin spiral rib, the thin spiral rib is positioned between two adjacent thick spiral ribs, a flame-retardant inner pipe is arranged on the inner wall of the core pipe, and inner spiral reinforcing ribs are uniformly arranged on the inner wall of the flame-retardant inner pipe. The external spiral reinforcing rib comprises a thick spiral rib and a thin spiral rib, the surface area can be increased, the adhesive force with concrete can be increased, the concrete hollowing and cracking are prevented, the friction resistance can be reduced by reducing the contact area with threading, the threading in the early stage and the threading in the later stage are facilitated, the wiring difficulty is reduced, the flame-retardant effect can be improved by arranging a ceramic coating, and the internal spiral reinforcing rib is safer to use.

Inventors

  • CHEN HOUZHONG

Assignees

  • 湖北金牛管业有限公司

Dates

Publication Date
20260512
Application Date
20250526

Claims (6)

  1. 1. An external reinforcing rib PVC electrical bushing comprises a core pipe (1), and is characterized in that the surface of the core pipe (1) is provided with a reinforcing outer pipe (2), the surface of the reinforcing outer pipe (2) is uniformly provided with external spiral reinforcing ribs (3), the external spiral reinforcing ribs (3) comprise thick spiral ribs (301) and thin spiral ribs (302), and the thin spiral ribs (302) are positioned between two adjacent thick spiral ribs (301); The inner wall of the core tube (1) is provided with a flame-retardant inner tube (4), and the inner wall of the flame-retardant inner tube (4) is uniformly provided with inner spiral reinforcing ribs (5).
  2. 2. The external reinforcement PVC electrical bushing as recited in claim 1, wherein the outer reinforcement tube (2), the outer spiral reinforcement (3), the flame-retardant inner tube (4) and the inner spiral reinforcement (5) are integrally formed with the core tube (1).
  3. 3. The externally reinforced PVC electrical bushing according to claim 1, wherein the number of the thick spiral ribs (301) is smaller than the number of the thin spiral ribs (302), and the distance between the thick spiral ribs (301) and the thin spiral ribs (302) and the distance between two adjacent thin spiral ribs (302) are equal.
  4. 4. The external reinforcing rib PVC electrical bushing as claimed in claim 1, wherein the thick spiral rib (301), the thin spiral rib (302) and the internal spiral rib (5) have the same rotation direction and the same screw pitch.
  5. 5. The PVC electrical bushing with external reinforcing ribs according to claim 1, wherein the internal spiral reinforcing ribs (5) and the external spiral reinforcing ribs (3) are arranged in a staggered mode, and the internal spiral reinforcing ribs (5) are positioned between two adjacent thin spiral ribs (302) and between the thin spiral ribs (302) and the thick spiral ribs (301).
  6. 6. The external reinforcement PVC electrical bushing as claimed in claim 1, wherein the inner wall of the flame-retardant inner tube (4) and the surface of the internal spiral reinforcement (5) are provided with ceramic coating (6).

Description

External reinforcing rib PVC electrical bushing Technical Field The utility model relates to the technical field of PVC pipes, in particular to an external reinforcement PVC electrical bushing. Background The PVC electrical bushing is an insulating electrical bushing for building, which uses polyvinyl chloride resin as a main raw material, and is widely applied to the electrical engineering of the building. The PVC electrical bushing is divided into red and blue, is used for distributing strong current and weak current respectively during use, is convenient to identify and maintain, avoids electric shock hazard, solves the problem of strong and weak electric wire interference, and common specifications comprise dn16-dn32, and different specifications are applicable to different wiring scenes and requirements. With the improvement of the beautiful decoration requirements, the circuit lines of the electrical engineering are all arranged in the underground and the wall nowadays, so that the compressive strength is particularly needed to be paid attention to when the PVC electrical bushing is used. The most popular electrician sleeve in the market at present is of a circular tube structure with smooth inner and outer walls, the compression strength of the smooth inner and outer walls of the PVC electrician sleeve can only be improved from the aspect of materials, the difficulty is relatively high, part of production enterprises are designing the PVC electrician sleeve which structurally improves the compression strength, the reinforcing ribs are not lost to be a good choice, the structural strength is improved in order to meet the market demands, and a novel external reinforcing rib PVC electrician sleeve is also designed and provided by I. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model provides an external reinforcing rib PVC electrical bushing which is used for realizing the effects of improving the structural strength and the compressive strength. In order to solve the technical problems, the utility model provides the following technical scheme: An external reinforcing rib PVC electrical bushing comprises a core pipe, wherein the surface of the core pipe is provided with a reinforcing outer pipe, the surface of the reinforcing outer pipe is uniformly provided with external spiral reinforcing ribs, the outer spiral reinforcing ribs comprise thick spiral ribs and thin spiral ribs, and the thin spiral ribs are positioned between two adjacent thick spiral ribs; The inner wall of the core tube is provided with a flame-retardant inner tube, and the inner wall of the flame-retardant inner tube is uniformly provided with inner spiral reinforcing ribs. Preferably, the reinforced outer tube, the outer spiral reinforcing rib, the flame-retardant inner tube and the inner spiral reinforcing rib are of an integrated structure with the core tube. Preferably, the number of the thick spiral ribs is smaller than that of the thin spiral ribs, and the distance between the thick spiral ribs and the thin spiral ribs and the distance between two adjacent thin spiral ribs are equal. Preferably, the spiral direction and the pitch of the thick spiral rib, the thin spiral rib and the inner spiral reinforcing rib are the same. Preferably, the inner spiral reinforcing ribs and the outer spiral reinforcing ribs are arranged in a staggered mode, and the inner spiral reinforcing ribs are located between two adjacent thin spiral ribs and between the thin spiral ribs and the thick spiral ribs. Preferably, the surface of the inner wall of the flame-retardant inner tube and the inner spiral reinforcing rib are provided with ceramic coatings. Compared with the prior art, the utility model has the following beneficial effects: (1) According to the utility model, the outer spiral reinforcing ribs and the inner spiral reinforcing ribs are respectively arranged on the surface and the inner reinforcing outer pipe and the flame-retardant inner pipe of the core pipe, and the reinforcing ribs are of a spiral shape through the design of the three-dimensional structure, so that the axial structural strength is improved, the circumferential structural strength is also improved, the compression resistance effect is improved, and the purposes of improving the structural strength and the compression resistance strength are achieved. (2) The external spiral reinforcing rib comprises the thick spiral rib and the thin spiral rib, so that the compressive strength and the structural strength are improved, meanwhile, the surface area can be increased, the adhesive force with concrete is increased in underground and walls during construction, and concrete hollowing and cracking are prevented. (3) The inner spiral reinforcing ribs are arranged in the flame-retardant inner tube, friction resistance can be reduced by reducing the contact area with threading, early threading and later wire replacement are facilitated, wi