CN101312082B

CN101312082B - Flexible control cable

Info

Publication number: CN101312082B
Application number: CN2007101292806A
Authority: CN
Inventors: 沃尔特·温克尔鲍尔; 弗兰克·米勒; 海因茨·W·哈马彻
Original assignee: Nexans SA
Current assignee: Nexans SA
Priority date: 2007-05-22
Filing date: 2007-05-22
Publication date: 2011-12-28
Anticipated expiration: 2027-05-22
Also published as: CN101312082A

Abstract

The invention discloses a flexible control cable, one or a plurality of control lines are stranded to a central element, and at least one layer of control lines is embraced by an outer sheath. The central element (1) comprises at least one pair of lines (1a, 1b), lines (1a, 1b) in the pair of lines comprise a stretch resistant plastic core element (10), metal wires (11) and a layer (12) of compressible insulating materials, wherein the metal wires are stranded to the core element, the layer (12) of compressible insulating material is coated on a stranded layer, the lines (1a, 1b) in the pair of lines are mutually stranded via pitch length of strand of 20-40D, and D refers to the external diameter of the lines.

Description

Flexible control cable

Technical field

The present invention relates to a kind of flexible control cable according to claim 1 preamble.

Background technology

EP0178249B1 discloses a kind of flexible control cable, wherein some bunch are stranded on the core element that forms as support component, wherein every bunch comprises the stranded core element on it of line, and the core that is wherein formed by support component and line is surrounded by braid and plastic sheath.The application of this cable is container handling equipment (a suspender cable).In order to improve the operation of cable under windage, and therefore make this cable can be used as the suspender cable, the core element that forms support component comprises the assembly that respectively weaves messenger, has used stretch-proof plastics silk weaving on the messenger.The core element of every bunch comprises the messenger of braiding, and the messenger of braiding similarly is arranged in the outer void of core.The messenger of braiding increases net weight, and do not have significantly to increase its in the horizontal flow resistance or reduce its flexibility.

DE3336616 discloses a kind of control cable of reeling such as the carried out cylinder that is used in the container handling equipment.Between the rising and decrement phase of crane, cable constantly be wrapped on the cylinder and from the cylinder unwinding, perhaps be placed on the feeding funnel and once more and mention.In this case, cable is allowed to pass the vertical free movement of air on sizable height.In strong wind, this will cause the serious buckling of cable, and it can hinder the mobile order of cable.In order to solve described problem, under the situation of the cable that twisting element is reeled with at least two stranded carried out cylinders of stranded layer, wherein first stranded layer is arranged around the support component that has steel wire rope, advise that at least one stranded layer is provided with each twisting element, this twisting element comprise braiding messenger, around messenger extrude polyamide or polyester-based sheathing and be arranged in messenger and sheathing between aromatic polyamides base rove, its mode makes them vertically to move.Aromatic polyamides base rove is for keeping the soft of cable and keeping required tensile strength to contribute.

Summary of the invention

The cable that the purpose of this invention is to provide a kind of mentioned type originally adopts this cable can allow in-site measurement to act on tension force on the cable, and based on this measured value control run duration cable be wound into cylinder and from the cylinder pine around winding speed.

The feature that provides in the characteristic by claim 1 realizes this purpose.

Except the advantage that directly produces from above-mentioned purpose, can also realize the advantage of high winding speed.In addition, can realize the increase of the service life of cable and whole system.

The exemplary embodiment that schematically illustrates based on Fig. 1 and 2 describes the present invention in detail.

Fig. 1 illustrates and can carry out the cable (drum-windable cable) that cylinder is reeled, and it has center part 1, around this center part 1 stranded ground floor 2 that twisting element 2a is arranged.Be wound with another layer 3 of twisting element 3a around ground floor 2.The cable core that comprises center part 1 and

layer

2 and 3 is centered on by sheath 4.

Just as known per se, the electric conductor that each twisting element 2a and 3a have the layout placed in the middle that does not specifically indicate, filament copper conductor (fine-wired copper conductor) for example, and specifically do not indicate for example based on the insulator of the rare rubber of ethene-third.Between layer 2 and layer 3, has the separating layer 5 of the spun-bonded fabric of making by polyethylene terephthalate.The length of the lay of each twisting element (lay) approximately is 8 times of stranded diameter.

On being arranged on the layer 3 is at least one band of being made by polyethylene terephthalate equally (taping).But, preferably, adopt two bands of making by polyethylene terephthalate, they to kink direction opposite.

Covered by the inner sheath made from the rubber composition that extrudes 7 with 6, in the wall of inner sheath, the braid 8 that is provided with polyester capillaries is as anti-twist protection.

Extrude layer as oversheath 9 by what form equally based on the material of vulcanized rubber or half finished rubber.

Center part 1 comprises a pair of

line

1a, 1b, and they and two gap-filler shall 1c, 1d twist together.The twisting element that forms in this kind mode is centered on by the 1e of spunbonded type polyethylene terephthalate tissue layer.Layer 1f that extrude of plastic material is used as outer sheathing.

Spun-bonded fabric is used for making that promptly distinguishing each adjacent layer can slide relative to each other.

Line 1a shown in Fig. 2 or 1b comprise the core of being made by the stretch-proof plastics 10.The aromatic polyamides of the trade mark that can buy on market Kevlar by name is preferred for this.Many copper wires 11 are stranded on this core 10.This copper wire preferably has 0.2 to 0.3mm diameter.Their quantity is between 20 to 60.11 layers of outside of copper wire be separator tube 12, it is made of material compressible, elastically deformable.Preferably, separator tube 12 is made of ethylene-propylene rubber.

Line

1a, 1b and gap-filler shall 1c, the length of the lay of 1d is between 20 to 40D, and wherein D is the overall diameter that comprises the twisting element of

line

1a, 1b and gap-filler shall 1c, 1d.It is also important that described layer 1f is compressible.

Under the situation of above-mentioned cable, twisting element 2a and 3a are used to control the arm (arm of thespreader) of suspender.

When suspender moved up and down, cable was subjected to the pulling force of different sizes.

One of reason of these pulling force is to be wound into the cylinder that is positioned at suspender top and from the net weight of the cable of cylinder unwinding.

Act on the effect that the changing pulling force on the cable has the distance between the conductor that changes line 1a and 1b.The conductor if electric current is flowed through, promptly they are connected to voltage source, and this electric capacity to

line

1a, 1b also changes so.The change of this electric capacity is measured and as the controlled variable of winding speed of control winding drum.

Claims

1. flexible control cable, wherein the one layer or more control line is stranded on the center part, and one deck control line is by outer sheath encircles at least, it is characterized in that, described center part (1) comprises at least one pair of line (1a, 1b), this is to every in line line (1a, 1b) comprise the core element (10) of stretch-proof plastics, be stranded in the layer of the wire (11) on the described core element (10) and the layer (12) that coats the compressible insulating material of stranded layer, and this is to the line (1a in the line, 1b) stranded each other with 20 to 40D lay length, wherein D is this overall diameter to line, and described center part (1) is coated by plastic sheath (1f), and the band (1e) of spunbonded type PETP fabric is arranged in, and described (1a is 1b) and between the described plastic sheath (1f) to line.

2. flexible control cable as claimed in claim 1 is characterized in that, described core element (10) is made of aromatic polyamides.

3. flexible control cable as claimed in claim 1 or 2 is characterized in that, described wire (11) is a copper wire, and its diameter is 0.2 to 0.3mm, and its quantity is 30 to 50.

4. flexible control cable as claimed in claim 1 or 2 is characterized in that, described (1a, 1b) (1c 1d) twists together with two interradicular space fillers to line.

5. flexible control cable as claimed in claim 4 is characterized in that, (1c 1d) comprises the PETP yarn of coil buckling to described gap-filler shall.

6. flexible control cable as claimed in claim 1 or 2 is characterized in that, and described control line (2a, 3a) stranded around center part (1) with two-layer (2,3), and the layer (5) of spunbonded type PETP fabric is arranged between described two-layer (2,3).

7. flexible control cable as claimed in claim 6 is characterized in that, the band (6) of spunbonded type PETP fabric is arranged on the skin (3) of control line (3a).

8. flexible control cable as claimed in claim 7 is characterized in that, band (6) is covered by inner sheath (7), and the distortion of polyester capillaries form protection (8) is arranged in the wall thickness of inner sheath (7).