阅读说明：本技术 航吊用柔性滑动式铝合金电缆及其制备方法 (Flexible sliding type aluminum alloy cable for aviation crane and preparation method thereof ) 是由 惠小兵 李军 王华俊 瞿其勇 严忠岐 于 2021-08-23 设计创作，主要内容包括：本发明涉及电缆制备技术领域,且公开了航吊用柔性滑动式铝合金电缆及其制备方法,步骤为：准备特细铝合金丝作为导体材料,准备弹性体材料作为导体绝缘层和弹性外护套的基本原料；将多根特细铝合金丝采用分层紧压的形式绞合成特细铝合金丝软导体；将绞合的软导体送入韧炼炉中进行韧炼操作；通过特殊设计的挤压模具将导体绝缘层紧密粘接包覆在特细铝合金丝软导体外,再将绕包层包覆在特细铝合金丝软导体外,再填入填充料,再通过特殊设计的挤压模具将弹性外护套层紧密粘接包覆在绕包层的外侧,完成整个电缆的生产加工。该方法制备的电缆具有非常好的柔韧性、反复弯曲性能及抗疲劳性能,非常适宜反复滑动航吊使用,安装和移动更加便利,性价比高。(The invention relates to the technical field of cable preparation, and discloses a flexible sliding type aluminum alloy cable for an aerial crane and a preparation method thereof, wherein the preparation method comprises the following steps: preparing an ultra-fine aluminum alloy wire as a conductor material, and preparing an elastomer material as a basic raw material of a conductor insulating layer and an elastic outer sheath; twisting a plurality of ultra-fine aluminum alloy wires into an ultra-fine aluminum alloy wire soft conductor in a layered and compacted mode; feeding the twisted soft conductor into a toughening furnace for toughening operation; closely the bonding cladding of conductor insulating layer outside superfine aluminum alloy silk soft conductor through the extrusion die of special design, will wrap the cladding outside superfine aluminum alloy silk soft conductor again, fill the stopping again, the extrusion die of rethread special design is with the cladding of closely bonding of elasticity oversheath layer in the outside of wrapping the cladding, accomplishes the production and processing of whole cable. The cable prepared by the method has very good flexibility, repeated bending performance and fatigue resistance, is very suitable for repeated sliding aerial crane, is more convenient to install and move, and has high cost performance.)

1. Flexible slidingtype aluminum alloy cable is used to boat crane, including many root superfine aluminum alloy silk soft conductors (1), its characterized in that: the fixed cladding in the outside of superfine aluminum alloy silk soft conductor (1) has one deck conductor insulating layer (2), many the outer cladding of superfine aluminum alloy silk soft conductor (1) has same around covering (4), fill out between covering (4) and many superfine aluminum alloy silk soft conductor (1) and be equipped with stopping (3), the fixed cladding in the outside of covering (4) has one deck elasticity oversheath (5).

2. The preparation method of the flexible sliding type aluminum alloy cable for the aviation crane is characterized by comprising the following steps of: the method comprises the following steps:

the method comprises the following steps: preparing ultra-fine aluminum alloy wires as conductor materials, and preparing elastomer materials as basic raw materials of the conductor insulating layer (2) and the elastic outer sheath (5);

step two: drawing and annealing the ultra-fine aluminum alloy wire to obtain a high-performance ultra-fine aluminum alloy wire raw material;

step three: a plurality of ultra-fine aluminum alloy wires are stranded into an ultra-fine aluminum alloy wire soft conductor (1) in a layered and compacted mode;

step four: the stranded soft conductor is sent into a toughening furnace for toughening operation, so that the physical property and the electrical property of the aluminum alloy are greatly improved;

step five: mixing elastomer materials, and extruding the mixture into a conductor insulating layer (2) and an elastic outer sheath (5) through a specially designed die by an extruding machine;

step six: the conductor insulation layer (2) is bonded and coated outside the ultra-fine aluminum alloy wire soft conductor (1), the wrapping layer (4) is coated outside the plurality of ultra-fine aluminum alloy wire soft conductors (1), then the filling material (3) is filled in the gaps between the multi-strand ultra-fine aluminum alloy wire soft conductor (1) and the wrapping layer (4), and the elastic outer sheath (5) is bonded and coated outside the wrapping layer (4) to complete the production and processing of the whole cable.

3. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 2, characterized in that: the annealing temperature of the soft conductor stranded in the fourth step in the annealing furnace is kept at 300-350 ℃, and the heat is continuously preserved for 6-8 hours.

4. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 1, characterized in that: the filling material (3) is specifically an extruded rope filling material layer with the size calculated according to the gap.

5. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 2, characterized in that: and a layer of high-density polyethylene film is bonded between the ultra-fine aluminum alloy wire soft conductor (1) and the conductor insulating layer (2).

6. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 2, characterized in that: the conductor insulating layer (2) and the elastic outer sheath (5) are extruded and formed by a specially designed die at 135-160 ℃.

7. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 2, characterized in that: the conductor insulating layer (2) and the elastic outer sheath (5) are detected after extrusion molding, and tightness between the insulating layer (2) and the elastic outer sheath (5) is ensured, but adhesion is avoided.

8. The preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to claim 2, characterized in that: the elastomer material is selected to ensure that the conductor insulating layer (2) and the elastic outer sheath (5) have good flexibility and low temperature resistance.

Technical Field

The invention relates to the technical field of cable preparation, in particular to a flexible sliding type aluminum alloy cable for an aerial crane and a preparation method thereof.

Background

A cable is a power or signal transmission device, and is generally composed of several wires or groups of wires.

At present, copper cables are mostly adopted for flexible cables for aviation cranes to use, but the copper cables are heavy in weight and inconvenient to install and move, the production cost of the copper cables is high, and the use cost is increased.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a flexible sliding type aluminum alloy cable for an aviation crane and a preparation method thereof, which have very good flexibility, repeated bending performance and fatigue resistance, are very suitable for being used for repeated sliding type aviation cranes, have the advantages of light weight compared with copper core cables, more convenience in installation and movement and high cost performance, and solve the problems that the existing flexible cable for the aviation cranes is mostly used by adopting copper cables, the copper cables are prevented from being heavy, and are very inconvenient to install and move, the production cost is high, the use cost is increased and the like.

(II) technical scheme

In order to realize the purposes of having very good flexibility, repeated bending performance and fatigue resistance, being very suitable for being used for repeated sliding navigation cranes, having much lighter weight compared with copper-core cables, more convenient installation and movement and high cost performance, the invention provides the following technical scheme: flexible slidingtype aluminum alloy cable is used to boat crane, including many extra thin aluminum alloy silk soft conductor, the fixed cladding in the outside of extra thin aluminum alloy silk soft conductor has one deck conductor insulating layer, many the outer cladding of extra thin aluminum alloy silk soft conductor has same around the covering, fill out between covering and many extra thin aluminum alloy silk soft conductor and be equipped with the stopping, the fixed cladding in the outside of covering has one deck elasticity oversheath.

The preparation method of the flexible sliding type aluminum alloy cable for the aviation crane comprises the following steps:

the method comprises the following steps: preparing an ultra-fine aluminum alloy wire as a conductor material, and preparing an elastomer material as a basic raw material of a conductor insulating layer and an elastic outer sheath;

step two: drawing and annealing the ultra-fine aluminum alloy wire to obtain a high-performance ultra-fine aluminum alloy wire raw material;

step three: twisting a plurality of ultra-fine aluminum alloy wires into an ultra-fine aluminum alloy wire soft conductor in a layered and compacted mode;

step four: the twisted soft conductor is sent into a toughening furnace for toughening operation, so that the physical property and the electrical property of the aluminum alloy are greatly improved;

step five: mixing the elastomer materials, and extruding the mixture into a conductor insulating layer and an elastic outer sheath by a plastic extruding machine through a specially designed die;

step six: the conductor insulating layer is bonded and coated outside the ultra-fine aluminum alloy wire soft conductors, the wrapping layer is coated outside the plurality of ultra-fine aluminum alloy wire soft conductors, the filling materials are filled into gaps between the plurality of strands of ultra-fine aluminum alloy wire soft conductors and the wrapping layer, and the elastic outer sheath is bonded and coated outside the wrapping layer to complete the production and processing of the whole cable.

Preferably, the annealing temperature of the soft conductor stranded in the fourth step in the annealing furnace is kept at 300-350 ℃, and the heat is continuously preserved for 6-8 hours.

Preferably, the filling material is an extruded rope filling material layer which is designed according to the calculated size of the gap.

Preferably, a layer of high-density polyethylene film is adhered between the ultra-fine aluminum alloy wire soft conductor and the conductor insulating layer.

Preferably, the conductor insulating layer and the elastic outer sheath are extruded and formed by a specially designed die at 135-160 ℃.

Preferably, the conductor insulating layer and the elastic outer sheath are detected after extrusion molding, and the conductor insulating layer and the elastic outer sheath have tightness but are not adhered.

Preferably, the elastomer material is selected to ensure that the conductor insulating layer (2) and the elastic outer sheath (5) have good flexibility and low temperature resistance.

(III) advantageous effects

Compared with the prior art, the invention provides a flexible sliding type aluminum alloy cable for an aerial crane and a preparation method thereof, and the flexible sliding type aluminum alloy cable has the following beneficial effects:

1. the flexible sliding type aluminum alloy cable for the aviation crane and the preparation method thereof are characterized in that the cable is composed of an ultra-fine aluminum alloy wire soft conductor, a conductor insulating layer, a filling material, a wrapping layer and an elastic outer sheath, wherein the conductor insulating layer and the elastic outer sheath have good flexibility and low temperature resistance, the ultra-fine aluminum alloy wire soft conductor has very good flexibility, repeated bending performance and fatigue resistance, and is very suitable for being used for repeated sliding aviation cranes.

2. According to the flexible sliding type aluminum alloy cable for the gantry crane and the preparation method thereof, the ultra-fine aluminum alloy wires are used for layering, pressing and twisting to form the flexible conductor, the use of only a copper cable in a moving occasion is broken through, the flexibility is greatly improved due to the unique alloy formula and the processing technology, the conductor is in a layering, pressing and twisting type due to the ultra-fine aluminum alloy wires, the twisted conductor needs to be annealed in a toughening furnace at the temperature of 300-350 ℃ and the heat is preserved for 6-8 h, the good physical property and the electrical property of aluminum alloy are realized, the conductor insulating layer and the elastic outer sheath are formed by extrusion through a specially designed die at the temperature of 135-160 ℃, the insulation and the sheath have good tightness, the flexible property and the low temperature resistance are good, and the use strength and the service life of the whole cable can be effectively guaranteed.

Drawings

Fig. 1 is a schematic structural view of a flexible sliding type aluminum alloy cable for an aerial crane according to the present invention;

FIG. 2 is a schematic diagram of a standard layered compaction of an ultra-fine aluminum alloy wire soft conductor of the flexible sliding type aluminum alloy cable for aviation crane and the preparation method thereof provided by the invention;

fig. 3 is a schematic diagram showing comparison of physical and electrical properties of rare earth aluminum alloy conductors of the flexible sliding type aluminum alloy cable for aviation crane and the preparation method thereof provided by the invention;

fig. 4 is a schematic diagram of performance requirements of an elastomer material elastomer of the flexible sliding type aluminum alloy cable for aviation crane and the preparation method thereof provided by the invention.

In the figure: 1 ultra-fine aluminum alloy wire soft conductor, 2 conductor insulating layers, 3 filling materials, 4 wrapping layers and 5 elastic outer sheaths.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the flexible sliding type aluminum alloy cable for aviation crane includes a plurality of ultra-fine aluminum alloy wire soft conductors 1, a conductor insulating layer 2 is fixedly wrapped outside the ultra-fine aluminum alloy wire soft conductors 1, a same wrapping layer 4 is wrapped outside the plurality of ultra-fine aluminum alloy wire soft conductors 1, a filler 3 is filled between the wrapping layer 4 and the plurality of ultra-fine aluminum alloy wire soft conductors 1, and an elastic outer sheath 5 is fixedly wrapped outside the wrapping layer 4.

The preparation method of the flexible sliding type aluminum alloy cable for the aviation crane comprises the following steps:

the method comprises the following steps: preparing ultra-fine aluminum alloy wires as conductor materials, and preparing elastomer materials as basic raw materials of the conductor insulating layer 2 and the elastic outer sheath 5;

step two: drawing and annealing the ultra-fine aluminum alloy wire to obtain a high-performance ultra-fine aluminum alloy wire raw material;

step three: twisting a plurality of ultra-fine aluminum alloy wires into an ultra-fine aluminum alloy wire soft conductor 1 in a layered and compacted mode;

step four: the twisted soft conductor is sent into a toughening furnace for toughening operation, so that the physical property and the electrical property of the aluminum alloy are greatly improved;

step five: mixing elastomer materials, and extruding the mixture into a conductor insulating layer 2 and an elastic outer sheath 5 through a specially designed die by an extruding machine;

step six: the conductor insulating layer 2 is bonded and coated outside the ultra-fine aluminum alloy wire soft conductors 1, the wrapping layer 4 is coated outside the plurality of ultra-fine aluminum alloy wire soft conductors 1, the filler 3 is filled in the gaps between the multi-strand ultra-fine aluminum alloy wire soft conductors 1 and the wrapping layer 4, and the elastic outer sheath 5 is bonded and coated outside the wrapping layer 4 to complete the production and processing of the whole cable.

The annealing temperature of the stranded soft conductor in the step four in the annealing furnace is kept at 300-350 ℃, and the heat is continuously preserved for 6-8 hours, so that the annealing degree of the conductor is ensured.

The filling material 3 is specifically an extruded rope filling material layer designed according to the calculated size of the gap.

A layer of high-density polyethylene film is bonded between the ultra-fine aluminum alloy wire soft conductor 1 and the conductor insulating layer 2, the high-density polyethylene has high mechanical strength, temperature resistance and dielectric strength, water vapor and gas can be well prevented, a better protection effect is achieved on the ultra-fine aluminum alloy wire soft conductor, and the service life of the ultra-fine aluminum alloy wire soft conductor is guaranteed.

The conductor insulating layer 2 and the elastic outer sheath 5 are extruded and formed by a specially designed die at 135-160 ℃.

The conductor insulation layer 2 and the elastic outer sheath 5 are detected after extrusion molding, have good tightness and are not adhered.

The selection of the elastomer material needs to ensure that the conductor insulating layer 2 and the elastic outer sheath 5 have good flexibility and low temperature resistance, and the detailed requirements can be shown in the schematic diagram of the elastomer material elastomer performance requirements in fig. 4.

Referring to fig. 2, fig. 2 is a schematic diagram of a standard layered compression standard of an ultra-fine aluminum alloy wire flexible conductor for a flexible sliding type aluminum alloy cable for a gantry crane and a manufacturing method thereof according to the present invention, wherein the ultra-fine aluminum alloy wire flexible conductor in preparation should meet the requirements of the nominal cross section and the maximum diameter of a single line in the conductor shown in fig. 2 after layered compression;

referring to fig. 3, fig. 3 is a schematic diagram showing the comparison of the physical and electrical properties of the rare earth aluminum alloy conductor of the preparation method of the flexible sliding type aluminum alloy cable for aviation crane according to the present invention, wherein the stranded conductor is annealed in the annealing furnace to meet the physical properties shown in fig. 3;

referring to fig. 4, fig. 4 is a schematic diagram illustrating the performance requirements of the elastomer material of the preparation method of the flexible sliding aluminum alloy cable for aviation crane according to the present invention, and the selection of the elastomer material should satisfy the related data information shown in fig. 4.

In summary, the flexible sliding type aluminum alloy cable for aviation crane and the preparation method thereof are characterized in that ultra-fine aluminum alloy wires are prepared as conductor materials, and elastomer materials are prepared as basic raw materials of the conductor insulating layer 2 and the elastic outer sheath 5; drawing and annealing the ultra-fine aluminum alloy wire to obtain a high-performance ultra-fine aluminum alloy wire raw material; twisting a plurality of ultra-fine aluminum alloy wires into an ultra-fine aluminum alloy wire soft conductor 1 in a layered and compacted mode; the stranded soft conductor is sent into a toughening furnace for toughening operation, so that the physical property and the electrical property of the aluminum alloy are greatly improved; mixing elastomer materials, and extruding the mixture into a conductor insulating layer 2 and an elastic outer sheath 5 through a specially designed die by an extruding machine; the conductor insulating layer 2 is bonded and coated outside the ultra-fine aluminum alloy wire soft conductors 1, the wrapping layer 4 is coated outside the plurality of ultra-fine aluminum alloy wire soft conductors 1, the filler 3 is filled in the gaps between the multi-strand ultra-fine aluminum alloy wire soft conductors 1 and the wrapping layer 4, and the elastic outer sheath 5 is bonded and coated outside the wrapping layer 4 to complete the production and processing of the whole cable.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.