Pre-vulcanized annular crown of extra-large tire as well as preparation method and application thereof

A pre-vulcanization and crown technology, applied in the direction of tire tread/tread pattern, application, tire parts, etc., to avoid poor heat dissipation, reduce shoulder delamination, and reduce curing time

Active Publication Date: 2020-12-15
BEIJING DUBELI TYRE CO LTD
View PDF24 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] In order to solve the defects of the existing technical process of retreading extra-large tires such as the low proportion of old carcass reuse and the poor performance of retreaded tires, the pr

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pre-vulcanized annular crown of extra-large tire as well as preparation method and application thereof
  • Pre-vulcanized annular crown of extra-large tire as well as preparation method and application thereof
  • Pre-vulcanized annular crown of extra-large tire as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This embodiment is a pre-vulcanized annular crown of 59 / 80R63 extra-jumbo tire, which is characterized in that the middle section inside the section of the annular crown is a multi-section arc, and the inner side of the shoulder extension at both ends is an arc tangent to the middle section.

[0071] 1. After the tire is used, its size and structure are quite different from the new tire. Therefore, before retreading the tire, it is necessary to inspect the main body size and crown structure size of the corresponding new tire, and then determine the structural dimensions of the pre-vulcanized annular crown.

[0072] The new tire parameters are as follows:

[0073] The tire section width is 1490mm; the outer diameter is 4025mm; the driving surface width is 1300mm; the driving surface arc radius is 3900mm; the pattern depth is 88mm.

[0074] The basic size of the annular crown is the same as that of a new tire, and the other main characteristic dimensions of the annular cr...

Embodiment 2

[0087] This embodiment is a pre-vulcanized annular crown of 59 / 80R63 extra-jumbo tire, which is characterized in that the middle section inside the section of the annular crown section is a multi-section arc, and the inner side of the shoulder extension at both ends is a tangential arc transition with the middle section. straight line.

[0088] The same parts of the new tire parameters and the main characteristic dimensions of the annular crown are referred to in Example 1. The difference is that the inner side of the tire shoulder extension 7 is a straight line tangent to the arc, and the angle between the straight line and the center line of the section is 35°. °, the radius of the transition arc between the straight line and the inner surface of the crown is 100mm.

[0089] According to the above size data, a pre-vulcanized annular tire crown for extra-large tires is realized as follows:

[0090] Such as Image 6 As shown, the pre-vulcanized annular rubber crown includes ...

Embodiment 3

[0096] The difference between this embodiment and Embodiment 1 is that blind holes 10 for installing sensors are distributed on the surface of the tread rubber, and the bottom ends of the blind holes 10 are located between the base rubber and the belt layer.

[0097] The tread adds a preset blind hole for sensor installation. When it is necessary to install a tread sensor to monitor the use of extra-large retreaded tires, it can be installed directly without drilling holes on the tread surface, which can improve the position accuracy of the later sensor installation. and work efficiency. The blind hole of the tread corresponds to the raised cylindrical structure on the vulcanization mold. The cylindrical structure is in the pattern block during vulcanization, which increases the heat transfer point inside the tread compound and can improve the heat in the tread during vulcanization. The distribution state is beneficial to the vulcanization uniformity of the pattern block rubbe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Arc radiusaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a pre-vulcanized annular crown of an extra-large tire as well as a preparation method and an application thereof. The annular crown comprises tire shoulder extending edges, wherein the tire shoulder extending edges extend from both sides of the crown to the central direction of the tire along tire shoulders, the tire shoulder extending edges are provided with pattern blocks and pattern groove structures which extend from the surface of the tire to the side of the tire and are suitable for the extra-large tire, and the outer contour lines of the cross sections of the tire shoulders and the tire shoulder extending edges are concave inwards. According to the pre-vulcanized annular crown, when an old tire body is ground, pattern grooves in original tire shoulders can be completely removed, and the crown structure and functional advantages of the extra-large tire which is retreaded can be fully given, so that the retreaded tire has better heat dissipation capacity,and additionally, the phenomena of delamination and stripping of the tire shoulders are reduced; the vulcanizing time of the whole tire at high temperature and high pressure is shortened, the adverseeffect on the tire body structure and rubber is avoided, the pre-vulcanized annular crown is suitable for manufacturing new tires and retreaded tires, and the wear resistance and puncture resistance of treads can be fully improved; and the bonding strength is increased through the large tire shoulder extending edges, and the stability of a bonding structure is facilitated.

Description

technical field [0001] The invention relates to the technical field of pre-cured crowns, in particular to a pre-cured annular crown of an extra-jumbo tire and its application. Background technique [0002] The so-called extra-jumbo tire refers to the division of tire size in the tire appearance quality standard "HG / T2177-2011" of the chemical industry standard of the People's Republic of China. Pneumatic tires with a nominal rim diameter of 33 inches and above and a nominal section width of 24 inches and above are: Jumbo tires. At the same time, according to the generally recognized concept put forward by the China Rubber Association: the nominal outer diameter of the rim of the tire specification is 33 inches or more, and the outer diameter of the tire design is more than 2000mm, and the load capacity of a single tire (★★ class, 10km / h) The engineering tires weighing more than 20,000kg are giant tires. At present, tires that meet the requirements of this specification are...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B60C11/01B60C9/18B29D30/58
CPCB60C11/01B60C9/18B29D30/58B60C2011/013B29D30/0605B29D30/54B60C11/02B29D30/56B60C9/28
Inventor 朱小君姚天琳朱健朱世兴
Owner BEIJING DUBELI TYRE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap