CN205368869U - Steel cord is used on tire tape speed layer - Google Patents

Abstract

The utility model discloses a steel cord is used on tire tape speed layer compiles the sth. Made by twisting by the steel wire and forms, including inner steel wire layer and outer layer wire layer, the four piece heart yearn steel wire of inner steel wire layer for being square pitch arrangement, the outer layer wire layer for evenly arranging nine steel wires around the inner steel wire layer, the whole cross -section of the constitution on inner steel wire layer and outer layer wire layer is circular structure. This steel cord not only the glue permeation performance good, corrosion -resistant can the reinforce, the fatigue performance can be good, can lighten tire weight in addition, possesses the intensity height, practices thrift the sizing material use amount, can energy saving and manufacturing cost.

Description

Tire belt speed layer steel cord

Technical field

This utility model relates to a kind of tire belt speed layer steel cord.

Background technology

The intensity that the demand driving of lighter amount tire steel steel for tyre cord silk by market improves constantly, its intensity is also developed to superhigh intensity and very high strength direction by regular tenacity, high intensity, by adopting the steel cord of higher intensity, can ensure that tire is when some strength, the consumption of steel cord in cord can not only be reduced, it also is able to reduce the consumption of sizing material simultaneously, achieve the deadweight reducing tire, thus reducing the resistance to rolling of tire, reach to save oil consumption, and reduce the purpose of CO2 emission.The strength grade of steel wire in steel cord, according to the requirement in ISO17832:2009, the intensity of individual wire can be defined (volume unit: MPa by below equation；Steel wire diameter unit: mm).

Regular tenacity: tensile strength of wire value=3275-2000* steel wire diameter value；

High intensity: tensile strength of wire value=3650-2000* steel wire diameter value；

Superhigh intensity: tensile strength of wire value=4000-2000* steel wire diameter value；

Extra High Strength: tensile strength of wire value=4350-2000* steel wire diameter value；

Existing intensive steel cord, almost without gap between crown wire and steel wire so that rubber is difficult to penetrate in steel cord, and life-time service easily causes steel wire of internal layer and cover wire phase mutual friction, causes the decline of cord strength；Simultaneously life-time service is vulnerable to the impact of extraneous humid air and causes cord corrosion, decrease in strength；Cord corrosion also can reduce the bonding strength of cord and rubber, easily causes all-steel cord and departs from rubber, reduce the service life of tire under the effect of cyclic stress.

Summary of the invention

This utility model provides a kind of as the tire belt speed layer steel cord in pneumatic tire, not only strike-through performance is good, corrosion resistance is strong, fatigue behaviour good for it, and can alleviate tire weight, possesses intensity height, save sizing material and make consumption, it is possible to save the energy and manufacturing cost.

This utility model is achieved by the following technical solution:

Tire belt speed layer steel cord, compiled sth. made by twisting by steel wire to form, including steel wire of internal layer layer and cover wire layer, steel wire of internal layer layer is square arrangement four described heart yearn steel wires, described cover wire layer is nine steel wires being evenly spaced in around steel wire of internal layer layer, and the overall cross section that steel wire of internal layer layer and cover wire layer are constituted is circular configuration.

The sth. made by twisting of described steel wire of internal layer layer to for S twist with the fingers, lay pitch d be 5mm.

The sth. made by twisting of described cover wire layer to for S twist with the fingers, lay pitch D be 10mm.

Described gauge of wire is 0.35mm.

This utility model compared with prior art has the advantages that

1, the four square arrangements of steel wire of this utility model internal layer and twisting are tight, four steel wires of internal layer are wrapped up and have the gap of certain rule between steel wire by nine steel wires of outer layer, make rubber be easy to penetrate into the internal layer of cord, namely improve strike-through and the corrosion resistance of cord.

2, this utility model is owing to the sth. made by twisting of steel cord internal layer and outer layer is to identical, and lay pitch d is the half of lay pitch D, and steel wire between layers is linear contact lay, and contact area is big, can be effectively improved the fatigue performance of cord.

Accompanying drawing explanation

Fig. 1 is the section structure schematic diagram of this utility model embodiment；

Fig. 2 is the transversary schematic diagram of this utility model embodiment；

Fig. 3 is the transversary schematic diagram of steel wire of internal layer layer in this utility model embodiment.

Sequence number in figure: 1, steel wire of internal layer layer, 2, cover wire layer.

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in further detail.

Shown in Fig. 1, Fig. 2 and Fig. 3, a kind of tire belt speed layer steel cord, compiled sth. made by twisting by steel wire to form, gauge of wire is 0.35mm, including steel wire of internal layer layer 1 and cover wire layer 2, described four heart yearn steel wires that steel wire of internal layer layer 1 is square arrangement, the sth. made by twisting of steel wire of internal layer layer 1 to for S twist with the fingers, lay pitch d be 5mm；Described cover wire layer 2 is nine steel wires being evenly spaced in around steel wire of internal layer layer 1, the sth. made by twisting of cover wire layer 2 to for S twist with the fingers, lay pitch D be 10mm；The overall cross section that steel wire of internal layer layer 1 and cover wire layer 2 are constituted is circular configuration.This steel cord not only strike-through performance is good, corrosion resistance is strong, fatigue behaviour good, and can alleviate tire weight, possesses intensity height, saves sizing material and makes consumption, it is possible to saves the energy and manufacturing cost.

Embodiment is only to facilitate understand the technical solution of the utility model; it is not intended that the restriction to this utility model protection domain; every without departing from any simple modification, equivalent variations and the modification perhaps according to technical spirit of the present utility model, above scheme made in technical solutions of the utility model, all still fall within this utility model protection domain.

Claims (4)

1. tire belt speed layer steel cord, compiled sth. made by twisting by steel wire to form, including steel wire of internal layer layer (1) with cover wire layer (2), it is characterized in that: described steel wire of internal layer layer is (1) for four heart yearn steel wires of square arrangement, described cover wire layer is (2) for being evenly spaced in nine steel wires of steel wire of internal layer layer (1) surrounding, and the overall cross section that (2) (1) steel wire of internal layer layer constituted with cover wire layer is circular configuration.

2. tire belt speed layer steel cord according to claim 1, it is characterised in that: described steel wire of internal layer layer sth. made by twisting (1) to for S twist with the fingers, lay pitch d be 5mm.

3. tire belt speed layer steel cord according to claim 2, it is characterised in that: described cover wire layer sth. made by twisting (2) to for S twist with the fingers, lay pitch D be 10mm.

4. tire belt speed layer steel cord according to claim 3, it is characterised in that: described gauge of wire is 0.35mm.