GB22340-2008

Belt conveyor for coal mine - Safety code

煤矿用带式输送机安全规范

GB 22340-2008 é uma norma nacional chinesa obrigatória vigente: Belt conveyor for coal mine - Safety code. Setor: Máquinas. Foco: Segurança de produtos. Entrada em vigor: 1 de set. de 2009.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard specifies the safety requirements for the design, manufacturing, installation, use, and maintenance of belt conveyors used in coal mines. It applies to underground coal mine belt conveyors and those used in explosive environments such as open-pit coal mines and coal preparation plants. It does not apply to steel wire rope traction belt conveyors. The standard is modified based on ISO 1819:1977.

Requisitos técnicos

The standard mandates that all conveyor designs ensure stability and strength under normal working conditions. It requires the use of flame-retardant conveyor belts and specifies that non-metallic components must meet anti-static and flame-retardant standards. Manufacturers must ensure that the maximum surface temperature of any component does not exceed specified limits to prevent ignition. Electrical equipment must comply with explosion-proof requirements outlined in GB 3836.1 to 3836.4. Conveyors must be equipped with comprehensive mechanical and electrical safety protection devices, including sensors for slippage, smoke, coal accumulation, and temperature. For conveyors exceeding 100 meters in length, emergency stop devices must be installed along the pedestrian walkway. Inclined conveyors prone to overspeed or reversal require reliable braking or backstop devices with specific deceleration and torque parameters. During installation, the standard dictates specific requirements for platforms, walkways, and ladders to ensure personnel safety, including minimum widths and anti-slip measures. Firefighting equipment must be installed at the head, tail, and at regular intervals along the tunnel. Strict operational protocols must be followed, prohibiting personnel from riding on non-passenger conveyors and requiring certified operators. Regular maintenance and inspection of moving parts are mandatory.

Métodos de ensaio

The standard references several specialized testing methods to verify compliance. Flame retardancy and anti-static properties of conveyor belts and polymer components are evaluated according to MT 113, MT 450, and MT 668. The performance of safety protection devices is assessed based on MT 872. Additionally, braking systems undergo rigorous testing to ensure braking acceleration and torque meet the specified safety margins.

Perguntas frequentes

Is GB 22340-2008 a mandatory standard?

Yes, all technical content within GB 22340-2008 is mandatory for the specified equipment. Manufacturers must strictly adhere to these safety codes to sell or operate belt conveyors in Chinese coal mines.

What products are covered under GB 22340-2008?

It covers belt conveyors used in underground coal mines, as well as those in open-pit coal mines and coal preparation plants with explosive hazards. It specifically excludes steel wire rope traction belt conveyors.

How does GB 22340-2008 relate to international standards?

This standard is modified from ISO 1819:1977 (Continuous mechanical handling equipment - Safety code - General rules). It incorporates additional technical requirements specific to China's coal mine safety regulations and industrial conditions.

The summary above provides a high-level overview of GB 22340-2008. To ensure complete compliance for your coal mine belt conveyors entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 22340-2008 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Segurança
CCS: J81
ICS: 73.100.99, 53.040.01
Órgão competente: National Mine Safety Administration
Comitê técnico: National Mine Safety Administration