High-strength large-span aluminum-clad steel stranded wire

Abstract

The utility model relates to the technical field of aluminum-clad steel stranded wires, in particular to a high-strength large-span aluminum-clad steel stranded wire, which comprises a steel core, an aluminum stranded wire is twisted and wound on the outer surface of the steel core, a fixing layer is wrapped outside the aluminum stranded wire, the fixing layer comprises a fixing sheath, the outer surface of the fixing sheath is fixedly connected with a mounting seat, and the mounting seat is fixedly connected with a connecting rod. And a rotating rod is mounted in an inner cavity of the mounting seat. According to the utility model, the problems that the electric conductivity is reduced, the cost is increased when the cable is directly replaced and the heat resistance is general due to the fact that the interior of the cable is possibly extruded due to external impact, the internal aluminum stranded wires are easy to break are solved, the impact force is further buffered in a rotating manner, the buffering performance is improved, and the service life of the cable is prolonged. The cable is effectively prevented from being damaged, and the high-conductivity aluminum stranded wires are utilized, so that the conductivity of the cable can be effectively improved, the service life of the cable is prolonged, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to aluminium -clad steel strand technical field, concretely is a kind of high-strength large-span aluminium -clad steel strand. BACKGROUND

[0002] Aluminium -clad steel strand is a kind of overhead conductor which is composed of aluminium -clad steel wire as reinforcing core and hard aluminium wire, compared with ordinary steel-cored aluminium conductor, it has the advantages of light weight, high current-carrying capacity, small sag, less power loss, good corrosion resistance, long service life, simple structure, easy to erect and maintain, large transmission capacity and so on. Aluminium -clad steel strand is widely used in transmission lines of various voltage levels and transmission lines requiring increased aluminium-steel cross-section ratio.

[0003] Through retrieval, the announcement number for CN221651201U is named anti-torsion steel-cored aluminium conductor, including inner core, by research and analysis, it can enhance the torsional strength of steel-cored aluminium conductor, avoid deformation, but to some extent, there are still the following shortcomings.

[0004] For example, the impact resistance is general, during use, the cable may be extruded inside due to external impact, the internal aluminium conductor is prone to breakage, thereby reducing the conductivity, directly replacing the cable will increase the cost, and the heat resistance is general, in order to solve the above technical problems, therefore we design a kind of high-strength large-span aluminium -clad steel strand. UTILITY MODEL CONTENT

[0005] The utility model discloses a kind of high-strength large-span aluminium -clad steel strand, with the advantage of high conductivity heat resistance, solve the cable may be extruded inside due to external impact, internal aluminium conductor is prone to breakage, thereby reducing the conductivity, directly replacing the cable will increase the cost, and the heat resistance is general.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high-strength large-span aluminium -clad steel strand, including steel core, the outer surface of the steel core is twisted and wound with aluminium conductor, the outer portion of the aluminium conductor is wrapped with fixed layer, the fixed layer includes fixed sheath, the outer surface of the fixed sheath is fixedly connected with mounting seat, the inner cavity of the mounting seat is installed with rotating rod, the outer surface of the fixed sheath and located at the gap of mounting seat fixedly connected with support block, the outer surface of the support block is equipped with buffer ring, the outer surface of the buffer ring is equipped with protective combination layer, the protective combination layer includes inner protective layer, the outer surface of the inner protective layer is fixedly equipped with middle protective layer, the outer surface of the middle protective layer is fixedly equipped with outer protective layer.

[0007] Preferably, the fixed sheath is fixedly wrapped on the outer portion of the aluminium conductor, and the rotating rod is in sliding contact with the inner cavity of the mounting seat.

[0008] Preferably, the outer surface of the support block is in an arc structure, and the outer surface of the support block is in contact with the buffer ring and is in sliding contact.

[0009] Preferably, the outer surface of the buffer ring is fixedly connected with a buffer arc plate one, the inner surface of the inner protective layer is fixedly connected with a buffer arc plate two, and the buffer arc plate one and the buffer arc plate two are in staggered distribution.

[0010] Preferably, the inner protective layer is sleeved on the outer surface of the buffer ring, the inner protective layer is made of polyvinyl chloride material, the middle protective layer is made of cross-linked polyethylene material, and the outer protective layer is made of polytetrafluoroethylene material.

[0011] Preferably, the fixed layer is made of PET material, and the buffer ring is made of natural rubber material.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The utility model discloses a fixed layer is arranged outside the aluminum strand, when the cable outside is impacted, the protective layer of cable outside is impacted first, and gradually buffers through buffer arc plate two, buffer arc plate one and buffer ring, then conduction is impacted to the fixed layer surface, utilizes the rotation of the rotating rod in the mounting seat and makes the buffer ring rotate on the fixed layer surface, so that the impact force is further buffered in the mode of rotation, improves the buffering performance, effectively avoids the damage of cable, and utilizes the aluminum strand of high conductivity, can effectively improve the cable conductivity, prolongs the service life of cable, and reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the three-dimensional structure schematic of the utility model Figure 1 ;

[0015] Figure 2 It is the three-dimensional structure schematic of the utility model Figure 2 ;

[0016] Figure 3 It is the three-dimensional schematic diagram of the fixed layer partial structure of the utility model;

[0017] Figure 4 It is the three-dimensional schematic diagram of the protective layer partial structure of the utility model.

[0018] In the drawing: 1, steel core;2, aluminum strand;3, fixed layer;31, fixed sleeve;32, mounting seat;33, rotating rod;34, support block;4, buffer ring;5, buffer arc plate one;6, buffer arc plate two;7, protective combined layer;71, inner protective layer;72, middle protective layer;73, outer protective layer. PREFERRED EMBODIMENT

[0019] Please refer toFigures 1-4 The utility model provides a high strength large span aluminium clad steel strand, including steel core 1, the outer surface of steel core 1 is twisted and is wound with aluminium strand 2, the outside of aluminium strand 2 is wrapped with fixed layer 3, fixed layer 3 includes fixed sheath 31, the outer surface of fixed sheath 31 is fixedly connected with mounting seat 32, the inner chamber of mounting seat 32 is installed with rotary rod 33, the outer surface of fixed sheath 31 and at the gap of mounting seat 32 fixedly connected with support block 34, the outer surface of support block 34 is equipped with buffer ring 4, the outer surface of buffer ring 4 is equipped with protection combination layer 7, and protection combination layer 7 includes inner protection layer 71, the outer surface of inner protection layer 71 is fixedly equipped with middle protection layer 72, and the outer surface of middle protection layer 72 is fixedly equipped with outer protection layer 73;

[0020] Please refer to Figure 1 And Figure 2 Fixed sheath 31 is wrapped in the outside of aluminium strand 2, and rotary rod 33 is in sliding contact with the inner chamber of mounting seat 32, by setting rotary rod 33, can rotate in the inside of mounting seat 32, make buffer ring 4 can rotate on the surface of rotary rod 33, and the impact force that buffer cable suffers;

[0021] Please refer to Please refer to Figure 3 The outer surface of support block 34 is arc structure, and support block 34 can effectively prop up buffer ring 4, avoid the deformation of buffer ring 4, and the outer surface of support block 34 is attached to buffer ring 4 and is in sliding contact;

[0022] Please refer to Figure 3 The outer surface of buffer ring 4 is fixedly connected with buffer arc plate one 5, the inner surface of inner protection layer 71 is fixedly connected with buffer arc plate two 6, buffer arc plate one 5 and buffer arc plate two 6 are staggered distribution, buffer arc plate one 5 and buffer arc plate two 6 can slide relative when being impacted, effectively improve the anti buffer wash ability of cable;

[0023] Please refer to Figure 4 Inner protection layer 71 is equipped on the outer surface of buffer ring 4, and inner protection layer 71 is made of polyvinyl chloride material, has the advantages such as flame retardant, high chemical drug resistance, mechanical strength and good electrical insulation, middle protection layer 72 is made of crosslinked polyethylene material, and crosslinked polyethylene has heat resistance and very excellent heat resistance, and outer protection layer 73 is made of polytetrafluoroethylene material;

[0024] Please refer to Figure 4 Fixed layer 3 is made of PET material, and buffer ring 4 is made of natural rubber material.

[0025] In use, by arranging the fixed layer 3 outside the aluminum strand 2, when the cable is impacted from the outside, the protection combination layer 7 on the outside of the cable is first impacted, and gradually buffered through the buffer arc plate two 6, the buffer arc plate one 5 and the buffer ring 4, then the impact is conducted to the surface of the fixed layer 3, the buffer ring 4 is rotated on the surface of the fixed layer 3 by rotating the rotating rod 33 inside the mounting seat 32, so as to further buffer the impact force in a rotating manner, and by using the aluminum strand 2 with high conductivity, the conductivity of the cable can be effectively improved, the inner protection layer 71, the middle protection layer 72 and the outer protection layer 73 can respectively play the effects of flame retardation, heat resistance and aging resistance, and the service life of the cable is effectively prolonged.

[0026] In summary: the high-strength large-span aluminum-clad steel strand solves the problems that the cable may be extruded from the inside due to external impact, the internal aluminum strand is easily broken, the conductivity is reduced, the cable needs to be directly replaced to increase the cost, and the heat resistance is generally poor by the cooperation of the steel core 1, the aluminum strand 2, the fixed layer 3, the buffer ring 4, the buffer arc plate one 5, the buffer arc plate two 6 and the protection combination layer 7.

Claims

1. A high-strength, long-span aluminum-clad steel stranded wire, comprising a steel core (1), characterized in that: The outer surface of the steel core (1) is twisted and wound with aluminum stranded wire (2). The aluminum stranded wire (2) is wrapped with a fixing layer (3). The fixing layer (3) includes a fixing sleeve (31). The outer surface of the fixing sleeve (31) is fixedly connected to a mounting base (32). A rotating rod (33) is installed in the inner cavity of the mounting base (32). A support block (34) is fixedly connected to the outer surface of the fixing sleeve (31) and at the gap of the mounting base (32). A buffer ring (4) is sleeved on the outer surface of the support block (34). A protective combination layer (7) is sleeved on the outer surface of the buffer ring (4). The protective combination layer (7) includes an inner protective layer (71). A middle protective layer (72) is fixedly sleeved on the outer surface of the inner protective layer (71). An outer protective layer (73) is fixedly sleeved on the outer surface of the middle protective layer (72).

2. The high-strength, long-span aluminum-clad steel strand according to claim 1, characterized in that: The fixing sleeve (31) is fixedly wrapped around the outside of the aluminum stranded wire (2), and the rotating rod (33) is in sliding contact with the inner cavity of the mounting base (32).

3. The high-strength, long-span aluminum-clad steel stranded wire according to claim 1, characterized in that: The outer surface of the support block (34) has an arc-shaped structure, and the outer surface of the support block (34) is in contact with the buffer ring (4) and slides.

4. The high-strength, long-span aluminum-clad steel stranded wire according to claim 1, characterized in that: The outer surface of the buffer ring (4) is fixedly connected to a buffer arc plate one (5), and the inner surface of the inner protective layer (71) is fixedly connected to a buffer arc plate two (6). The buffer arc plate one (5) and the buffer arc plate two (6) are staggered.

5. A high-strength, long-span aluminum-clad steel stranded wire according to claim 1, characterized in that: The inner protective layer (71) is fitted onto the outer surface of the buffer ring (4). The inner protective layer (71) is made of polyvinyl chloride, the middle protective layer (72) is made of cross-linked polyethylene, and the outer protective layer (73) is made of polytetrafluoroethylene.

6. A high-strength, long-span aluminum-clad steel stranded wire according to claim 1, characterized in that: The fixing layer (3) is made of PET material, and the buffer ring (4) is made of natural rubber material.

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