CN205069180U - A high -speed low pressure reel cable for hoist - Google Patents

Abstract

The utility model provides a high -speed low pressure reel cable for hoist, it includes the tensile SMIS, the tensile SMIS is the outer cladding elastomer of aircraft wire rope, and the transposition has a plurality of layer line cores outside the tensile center, and is outmost the outer cladding of sinle silk has the enhancement layer, sheath in the crowded package in the space between enhancement layer and the tensile SMIS, and the outer parcel of enhancement layer has exodermis, interior outer jacket. Compared with the prior art, the utility model discloses following beneficial effect has: 1. The tensile SMIS is the outer cladding elastomer of aircraft wire rope, can bear the dead weight of cable when high -speed vertical lift and assault strength. 2. Insulation core adopt the aramid fiber to strengthen, smart thin copper wire kinks the structure flexible conductor again, has increased resistant bending, the tensile strength of conductor.

Description

A high-speed and low-voltage reel cable for spreaders

technical field

The utility model relates to a high-speed and low-voltage reel cable used for a sling, which belongs to the technical field of hoisting cables.

Background technique

At present, the reel cables for spreaders are mostly used on the reel machines of large spreaders of port machinery. The use environment is outdoor humid and subject to salt spray erosion. The cables are required to have excellent weather resistance and salt spray resistance. The cables are used up and down with the spreader. , the running speed is very fast, due to the high acceleration of the start and stop of the spreader for each operation, and the weight of the cable, the requirements for the tensile performance of the cable and the wear resistance of the sheath material are high.

Utility model content

Aiming at the defects in the prior art, the purpose of this utility model is to provide a high-speed and low-voltage reel cable for a spreader.

The utility model is achieved through the following technical solutions:

A high-speed and low-voltage reel cable for a sling, which includes a tensile core, the tensile core is twisted with several layers of wire cores, and the outermost wire core is covered with a reinforcing layer, The gap between the reinforcement layer and the tensile core is extruded with an inner sheath, and the reinforcement layer is wrapped with an outer sheath.

As a preferred solution, the tensile core is composed of an elastomer layer wrapped around an aviation steel wire rope.

As a preferred solution, the wire core layer includes a conductor, a polyurethane insulating layer and a cotton braided layer, the insulating layer is wrapped outside the conductor, and the braided layer is wrapped outside the insulating layer.

As a preferred solution, the stranded pitch diameter ratio of each core body layer is less than 12.

As a preferred solution, the conductor is formed by twisting fine copper wires through multi-twisting.

As a preferred solution, aramid fiber is also twisted in the conductor.

As a preferred solution, the inner and outer sheaths are made of radiation cross-linked polyurethane material.

As a preferred solution, an aramid braided reinforcement layer is arranged between the inner and outer sheaths.

Compared with the prior art, the utility model has the following beneficial effects:

1. The tensile core is an aviation steel wire rope covered with elastic body, which can withstand the self-weight and impact force of the cable when it is vertically lifted at high speed.

2. The insulation is woven with cotton yarn to further improve the torsional and tensile performance of the core, and the cores of each layer can be closely arranged.

3. Multiple wire cores are concentrically stranded, the pitch ratio of the stranding is small, the outer diameter of the cable is small, and the bending radius is small.

4. An aramid braided reinforcement layer is set between the inner and outer sheaths, which can strengthen the overall sheath and improve the tensile strength of the cable.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is a schematic cross-sectional view of a high-speed low-voltage reel cable for a spreader of the present invention;

In the figure: 1. Conductor; 2. Polyurethane insulation layer; 3. Cotton yarn braided layer; 4. Aviation steel wire rope; 5. Elastomer layer; 6. Cross-linked polyurethane inner sheath; 7. Aramid braided reinforcement layer; Cross-linked polyurethane outer sheath.

detailed description

The utility model is described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model. These all belong to the protection domain of the present utility model.

The cross-section of a high-speed and low-voltage reel cable used in a sling according to this embodiment is shown in Figure 1, which includes a tensile core, and the tensile core is stranded with several layers of wire core layers. The core layer of the outermost layer is covered with a reinforcement layer 7 , the inner sheath 6 is extruded in the gap between the reinforcement layer 7 and the tensile core, and the reinforcement layer is wrapped with an outer sheath 8 . The tensile central core is composed of an elastic body layer 5 wrapped outside the refined twisted aviation steel wire rope 4 .

The wire core body includes a conductor 1, a polyurethane insulating layer 2 and a braiding layer 3. The braiding layer 3 can be braided with a veil. The conductor 1 is formed by twisting fine copper wires through multiple strands. The insulating layer 2 is wrapped outside the conductor 1 and braided. Layer 3 wraps around insulating layer 2.

The stranded pitch diameter ratio of each core layer is less than 12.

In a preferred embodiment, aramid fiber is also twisted in the conductor 1 .

Compared with the prior art, the utility model has the following beneficial effects:

1. The tensile core is covered with elastic body of aviation steel wire rope, which can bear the self-weight and impact force of the cable when it is vertically lifted at high speed

2. The insulated wire core is reinforced with aramid fiber, and the soft conductor with fine copper wire multi-twisted structure increases the bending resistance and tensile performance of the conductor.

3. Multiple wire cores are concentrically stranded, the pitch ratio of the stranding is small, the outer diameter of the cable is small, and the bending radius is small.

4. An aramid braided reinforcement layer is set between the inner and outer sheaths, which can strengthen the overall sheath and improve the tensile strength of the cable.

The specific embodiments of the present utility model have been described above. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the utility model.

Claims (8)

1. A high-speed and low-voltage reel cable for a sling, characterized in that it comprises a tensile core, and the tensile core is stranded with several layers of cores, and the outermost cores are outsourced Covered with a reinforcement layer, the inner sheath is extruded in the gap between the reinforcement layer and the tensile core, and the outer sheath is wrapped around the reinforcement layer. 2. A high-speed and low-voltage reel cable for a spreader according to claim 1, wherein the tensile core is composed of an elastomer layer wrapped around an aviation steel wire rope. 3. A kind of high-speed and low-voltage reel cable for a hanger as claimed in claim 1, wherein the core of each layer comprises a conductor, a polyurethane insulating layer and a cotton yarn braiding layer, and the insulating layer is wrapped around the conductor In addition, the braided layer is wrapped outside the insulating layer. 4. A high-speed and low-voltage reel cable for a spreader as claimed in claim 1, characterized in that the pitch-to-pitch ratio of the wire cores in each layer is less than 12. 5. A high-speed and low-voltage reel cable for a spreader as claimed in claim 3, wherein the conductor is formed by twisting fine copper wires through multi-twisting. 6. A high-speed and low-voltage reel cable for a spreader as claimed in claim 5, characterized in that aramid fiber is twisted in the conductor. 7. A high-speed and low-voltage reel cable for a spreader as claimed in claim 1, wherein the inner sheath and the outer sheath are made of radiation cross-linked polyurethane material. 8. A high-speed low-voltage reel cable for a spreader as claimed in claim 1, characterized in that, an aramid braided reinforcing layer is arranged between the inner sheath and the outer sheath.