GB/T 28267.2: Evolution and historical versions
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| GB/T 28267.2-2025 | English | RFQ |
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Steel cord conveyor belts - Part 2: Preferred belt types
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GB/T 28267.2-2025
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| GB/T 28267.2-2015 | English | 239 |
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Steel cord conveyor belts -- Part 2: Preferred belt types
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GB/T 28267.2-2015
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Basic data | Standard ID | GB/T 28267.2-2025 (GB/T28267.2-2025) | | Description (Translated English) | Steel cord conveyor belts - Part 2: Preferred belt types | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 28267.2-2015 | GB/T 28267.2-2015: Steel cord conveyor belts -- Part 2: Preferred belt types---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Steel cord conveyor belts - Part 2. Preferred belt types
ICS 53.040.20
G42
National Standards of People's Republic of China
Steel cord conveyor belts - Part 2. Preferred belt type
(ISO 15236-2..2004, MOD)
2015-12-31 released
2016-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 28267 "steel cord conveyor belt" is divided into the following four parts.
- Part 1. Design, dimensions and mechanical requirements for general purpose conveyor belts;
- Part 2. preferred belt type;
- Part 3. Particular safety requirements for downhole conveyor belts;
- Part 4. vulcanized joints with tapes.
This part is Part 2 of GB/T 28267.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part uses the re-drafting method to modify ISO 15236-2..2004 "Steel cord conveyor belt Part 2. Preferred belt type" (English
Version).
This section has technical differences compared to ISO 15236-2..2004, and the terms involved in these differences have passed through the margin
The vertical single line (|) of the location is marked, technical differences and the reasons are as follows.
In order to apply the development of the technical level of China's steel cord conveyor belt, there are three types of belt type. 6300,7000 and
7500 (see Table 2).
This part also makes the following editorial changes.
In the range, "this part applies to steel cord conveyor belt".
This section is proposed by the China Petroleum and Chemical Industry Association.
This part is headed by the National Technical Committee on Conveyor Belt Subcontractors (SAC/TC428/SC1) with National Roller and Standardized Technical Committee.
This part of the drafting unit. Qingdao rubber six conveyor belt Co., Ltd., Zhejiang Fenfei Rubber Products Co., Ltd., Zhejiang three-dimensional rubber products
Co., Ltd., Shandong Chenguang Tape Co., Ltd., Shandong Zhongyi Rubber Co., Ltd.
The main drafters of this part. Zhang Dun, Zheng Zhiliu, Zhang Guofang, Liu Shengping, Guo Yongxian, Zhang Jing.
Introduction
The overall length of the steel cord conveyor belt is generally longer, requiring the use of a number of belt sections provided by the manufacturer at the site of use.
In order to produce a joint with high dynamic performance between the conveyor belts provided by a plurality of manufacturers, for some characteristics such as thickness with core layer,
Wire rope spacing and wire rope diameter to determine the type of conveyor belt standardization is necessary.
Steel cord conveyor belts - Part 2. Preferred belt type
1 Scope
This part of GB/T 28267 specifies the preferred type of conveyor belt design with longitudinal wire ropes as reinforcement. This part
The preferred type of series is based on the general requirements of the structure specified in GB/T 28267.1.
This part applies to steel cord conveyor belt.
2 General
The type of steel cord conveyor belt referred to in this section is selected from the numerous possible belt structures in which the conveyance of type A and belt B
The belt has been mass produced and used.
It is generally believed that conveyor belts with a nominal breaking strength should use the same wire rope and wire rope spacing, or at least have the same
With core thickness.
With regard to the design requirements, that is, the wire rope diameter and wire rope spacing requirements, depending on the application will be used in the connector type.
Steel cord conveyor belt in accordance with GB/T 28267.4 There are three main curing joints.
Staggered ladder
--- ordinary ladder joints;
--- finger joints.
For high-performance stepped joints, the connected two sections should have equal wire pitch and wire rope diameter;
It is not so important to have a uniformity in the wire rope pitch and the wire rope diameter, and it is important that the two-
With the same core thickness. Therefore, in the following tables for different belt types, the specified wire diameter, wire pitch and steel
The number of wire ropes is only applicable to bands with ladder joints, ie A1-type, A2-belt and B2-type belt.
The number of wire ropes specified in Table 2, Table 3 and Table 5 is only a guideline, which is calculated as follows.
nmin =
KN × B
Fbs × 1000
The calculation of the number of wire ropes also takes into account the requirement that the side rubber should be no more than 40 mm and not less than 15 mm,
15 ≤ bk ≤ 40
The minimum breaking strength specified in GB/T 28267.1 and GB/T 28267.4 (actual breaking strength is calculated as follows) is satisfied
, The number of wire ropes with or without less than the values specified in the table may be used.
KN =
Fbs × n × 1000
The symbols and units given in Table 1 apply to this document.
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