Flame-retardant prefabricated branch cable
By designing a clamping sleeve and rotating bracket structure, the fatigue damage problem of prefabricated branch cables during angle adjustment is solved, achieving stable connection of branch lines and improving cable reliability and service life.
Patent Information
- Application Number
- CN202423095994.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2034-12-16
AI Technical Summary
When adjusting the angle of existing prefabricated branch cables, fatigue damage is prone to occur at the root of the branch cable, leading to internal open circuits or short circuits.
The structure employs a clamping sleeve and a rotating bracket. The angle of the branch cable is adjusted and fixed by rotating the connecting plate and the rotating shaft, thus avoiding fatigue damage caused by traction.
It effectively prevents fatigue damage at the root of branch cables, avoids internal open circuits or short circuits, and improves the reliability and service life of cables.
Smart Images
Figure CN223692937U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of electric wire and cable, especially to a flame-retardant prefabricated branch cable. BACKGROUND
[0002] The prefabricated branch cable is a cable with branch lines pre-fabricated by a factory according to user design drawings when producing a main cable, and is a new technical product in recent years, which has excellent anti-seismicity, air tightness, waterproofness, etc. compared with the original technology. The branch lines are pre-manufactured on the main cable, and the cross-sectional size and length of the branch lines are determined according to design requirements, which greatly shortens the construction period, greatly reduces material and construction costs, and greatly ensures the reliability of power distribution. However, the following problems still exist.
[0003] In actual use, the branch cable is generally adjusted in angle by traction outside the main cable, and the traction and pulling by multiple branch cables can easily cause fatigue damage at the root of the branch cable, resulting in internal open circuit or short circuit of the branch cable, which is inconvenient to use. UTILITY MODEL CONTENTS
[0004] In view of the technical problem of fatigue damage at the root of the branch cable caused by angle adjustment by traction outside the main cable of the existing device, the utility model provides a flame-retardant prefabricated branch cable.
[0005] The utility model provides a kind of flame-retardant prefabricated branch cable, including clamping sleeve, the surface of the clamping sleeve is equipped with connecting hole, the surface of the clamping sleeve is respectively fixedly connected with main branch connecting sleeve and rotating support, the inner wall of the main branch connecting sleeve is slidably connected with main branch protection layer, the inner wall of the main branch connecting sleeve is respectively provided with main branch wire core, main branch copper cable and main branch flame-retardant layer, the surface of the rotating support is fixedly connected with shaft, the surface of the shaft is rotatably connected with connecting plate, the surface of the connecting plate is fixedly connected with branch connecting sleeve, the inside of the branch connecting sleeve is slidably connected with branch protection layer, the inner wall of the branch connecting sleeve is respectively provided with branch wire core, branch copper cable and branch flame-retardant layer.
[0006] Preferably, the rotating support and the connecting hole are symmetrically distributed with the axis of the clamping sleeve as the center, and the clamping sleeve fixes and clamps the main branch connecting sleeve through the connecting hole by bolts.
[0007] Preferably, the main branch wire core and the main branch copper cable are located inside the main branch flame-retardant layer, a plurality of the main branch copper cables are distributed in a circumferential array with the axis of the main branch wire core as the center, and the main branch flame-retardant layer is located inside the main branch protection layer.
[0008] Preferably, the connecting plates are arranged in linear array along the axis of the rotating shaft.
[0009] Preferably, the branch copper cables are arranged in circumferential array along the axis of the branch wire core.
[0010] Preferably, the surface of the main branch protection layer is in sliding connection with the inner wall of the main branch connecting sleeve, and the surface of the branch protection layer is in sliding connection with the inner wall of the branch connecting sleeve.
[0011] The utility model discloses the beneficial effects are:
[0012] The surface of the clamping sleeve is fixedly connected with the rotating support, the branch connecting sleeve fixedly connected with the surface of the connecting plate is rotatably connected with the rotating support through the rotating shaft, the branch cable connection is fixed after the angle adjustment, and the technical problem that the internal open circuit or short circuit caused by the fatigue damage of the branch cable root part during the angle adjustment of the cable main line outside through the traction mode of the existing device is solved. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 A schematic diagram of the utility model is provided.
[0014] Fig. 2 A branch connecting sleeve structure perspective view of the utility model is provided.
[0015] Fig. 3 A main branch wire core structure perspective view of the utility model is provided.
[0016] In the drawing: 1, clamping sleeve, 2, connecting hole, 3, main branch connecting sleeve, 4, rotating support, 5, main branch protection layer, 6, main branch wire core, 7, main branch copper cable, 8, main branch flame-retardant layer, 9, rotating shaft, 10, connecting plate, 11, branch connecting sleeve, 12, branch protection layer, 13, branch wire core, 14, branch copper cable, 15, branch flame-retardant layer. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0018] Reference Figs. 1-3The application discloses a fire-retardant prefabricated branch cable which comprises a clamping sleeve 1, a connecting hole 2 is formed in the surface of the clamping sleeve 1, a main-branch connecting sleeve 3 and a rotating support 4 are fixedly connected to the surface of the clamping sleeve 1 respectively, a main-branch protection layer 5 is slidably connected to the inner wall of the main-branch connecting sleeve 3, a main-branch wire core 6, a main-branch copper cable 7 and a main-branch fire-retardant layer 8 are arranged on the inner wall of the main-branch connecting sleeve 3 respectively, a rotating shaft 9 is fixedly connected to the surface of the rotating support 4, a connecting plate 10 is rotatably connected to the surface of the rotating shaft 9, a branch connecting sleeve 11 is fixedly connected to the surface of the connecting plate 10, a branch protection layer 12 is slidably connected to the inside of the branch connecting sleeve 11, a branch wire core 13, a branch copper cable 14 and a branch fire-retardant layer 15 are arranged on the inner wall of the branch connecting sleeve 11 respectively.
[0019] The rotating support 4 and the connecting hole 2 are symmetrically distributed with the axis of the clamping sleeve 1 as the center, and the clamping sleeve 1 fixes the main-branch connecting sleeve 3 through the connecting hole 2 by bolt connection.
[0020] Further, the clamping sleeve 1 fixes the main-branch protection layer 5 through the main-branch connecting sleeve 3.
[0021] The main-branch wire core 6 and the main-branch copper cable 7 are located in the inside of the main-branch fire-retardant layer 8, a plurality of main-branch copper cables 7 are distributed in a circumferential array with the axis of the main-branch wire core 6 as the center, and the main-branch fire-retardant layer 8 is located in the inside of the main-branch protection layer 5.
[0022] Further, the main-branch protection layer 5 is provided with the main-branch fire-retardant layer 8 wrapped outside the main-branch wire core 6 and the main-branch copper cable 7.
[0023] The connecting plate 10 rotates towards the axis direction of the main-branch connecting sleeve 3 with the axis of the rotating shaft 9 as the center, and a plurality of connecting plates 10 are distributed in a linear array with the axis direction of the rotating shaft 9.
[0024] Further, the main-branch connecting sleeve 3 drives the rotating support 4 to rotate with the axis of the main-branch wire core 6 as the center, and the connecting plate 10 drives the branch connecting sleeve 11 to rotate along the axis direction of the main-branch wire core 6.
[0025] The branch wire core 13 and the branch copper cable 14 are located in the inside of the branch fire-retardant layer 15, a plurality of branch copper cables 14 are distributed in a circumferential array with the axis of the branch wire core 13 as the center, and the branch fire-retardant layer 15 is located in the inside of the branch protection layer 12.
[0026] Further, the branch protection layer 12 is provided with the branch fire-retardant layer 15 wrapped outside the branch wire core 13 and the branch copper cable 14.
[0027] The surface of the main-branch protection layer 5 is slidably connected to the inner wall of the main-branch connecting sleeve 3, and the surface of the branch protection layer 12 is slidably connected to the inner wall of the branch connecting sleeve 11.
[0028] Further, the main branch connection sleeve 3 fixedly connected with the main branch wire core 6 is connected with the branch connection sleeve 11 fixedly connected with the connecting plate 10, the rotating support 4 and the rotating shaft 9.
[0029] The surface of the clamping sleeve 1 is fixedly connected with the rotating support 4, the branch connection sleeve 11 fixedly connected with the surface of the connecting plate 10 is rotationally connected with the rotating support 4 through the rotating shaft 9, and the branch cable connection is fixed after the angle is adjusted, so that the technical problem that the existing device causes fatigue damage at the root of the branch cable and internal open circuit or short circuit when the angle is adjusted by traction outside the main cable is solved.
[0030] Working principle:
[0031] Before use, the branch flame-retardant layer 15 and the branch protective layer 12 outside one end of the branch wire core 13 are removed, the branch copper cable 14, the branch flame-retardant layer 15 and the branch protective layer 12 at one end of the branch wire core 13 are inserted into the inside of the branch connection sleeve 11, the surface of the branch wire core 13, the surface of the branch copper cable 14, the surface of the branch flame-retardant layer 15 and the surface of the branch protective layer 12 are pressed and clamped to be in contact with the inner wall of the branch connection sleeve 11, a plurality of branch wire cores 13 are respectively inserted into the inside of a plurality of branch connection sleeves 11, one end of the main branch wire core 6 is sequentially removed from the main branch flame-retardant layer 8 and the main branch protective layer 5, and the one end of the main branch wire core 6 is inserted into the inside of the main branch connection sleeve 3, the surface of the main branch wire core 6, the surface of the main branch copper cable 7, the surface of the main branch flame-retardant layer 8 and the surface of the main branch protective layer 5 are in contact with the inner wall of the main branch connection sleeve 3, the surface of the clamping sleeve 1 is fixedly connected with the surface of the main branch connection sleeve 3 through the bolt connection of the connecting hole 2 on the surface of the clamping sleeve 1 after the main branch wire core 6 is inserted into the inside of the main branch connection sleeve 3, and the surface of the main branch protective layer 5, the surface of the branch protective layer 12 and the surface of the connecting mechanism are insulated and protected after the angle of the branch wire core 13 is adjusted by rotating the rotating shaft 9 through the connecting plate 10 after the branch wire core 13 is fixed.
[0032] The above merely describes a preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A flame-retardant prefabricated branch cable comprising a clamping sleeve (1), characterized in that: The surface of the clamping sleeve (1) is provided with a connecting hole (2), the surface of the clamping sleeve (1) is fixedly connected with a main branch connecting sleeve (3) and a rotating support (4) respectively, the inner wall of the main branch connecting sleeve (3) is slidably connected with a main branch protective layer (5), the inner wall of the main branch connecting sleeve (3) is provided with a main branch wire core (6), a main branch copper cable (7) and a main branch flame-retardant layer (8) respectively, the surface of the rotating support (4) is fixedly connected with a rotating shaft (9), the surface of the rotating shaft (9) is rotatably connected with a connecting plate (10), the surface of the connecting plate (10) is fixedly connected with a branch connecting sleeve (11), the inside of the branch connecting sleeve (11) is slidably connected with a branch protective layer (12), the inner wall of the branch connecting sleeve (11) is provided with a branch wire core (13), a branch copper cable (14) and a branch flame-retardant layer (15) respectively.
2. A fire resistant preformed branch cable according to claim 1, characterised in that: The rotating support (4) and the connecting hole (2) are symmetrically distributed with the axis of the clamping sleeve (1) as the center, and the clamping sleeve (1) is fixedly clamped with the main branch connecting sleeve (3) through the connecting hole (2) connected by bolts.
3. A fire resistant preformed branch cable according to claim 1, wherein: The main branch wire core (6) and the main branch copper cable (7) are located in the inside of the main branch flame-retardant layer (8), a plurality of the main branch copper cables (7) are distributed in a circumferential array with the axis of the main branch wire core (6) as the center, and the main branch flame-retardant layer (8) is located in the inside of the main branch protective layer (5).
4. The flame-retardant pre-branching cable according to claim 1, characterized in that: The connecting plate (10) rotates towards the axis direction of the main branch connecting sleeve (3) with the axis of the rotating shaft (9) as the center, and a plurality of the connecting plates (10) are distributed in a linear array with the axis direction of the rotating shaft (9).
5. The flame-retardant pre-branching cable according to claim 1, characterized in that: The branch wire core (13) and the branch copper cable (14) are located in the inside of the branch flame-retardant layer (15), a plurality of the branch copper cables (14) are distributed in a circumferential array with the axis of the branch wire core (13) as the center, and the branch flame-retardant layer (15) is located in the inside of the branch protective layer (12).
6. A fire resistant preformed branch cable according to claim 1, wherein: The surface of the main branch protective layer (5) is slidably connected with the inner wall of the main branch connecting sleeve (3), and the surface of the branch protective layer (12) is slidably connected with the inner wall of the branch connecting sleeve (11).