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GB 26484-2011Noise limits for hydraulic press (English PDF)

液压机噪声限值

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Issued by

Standardization Administration of China

Level / Type

National · Mandatory

Issue date

May 12, 2011

Implementation date

January 1, 2012

Scope

GB 26484-2011 is the English-translated version of 液压机噪声限值.

GB 26484-2011 — This standard specifies the hydraulic machine sound power level and sound pressure level of the noise limits. This standard applies to all types of hydraulic machines, such as a single-column hydraulic machine, four-column hydraulic machine.

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Document preview — GB 26484-2011

National Standard of the People's Republic of China

ICS: 25.120.10
Classification: J 62

Issued by: Standardization Administration of China

Foreword
1 Scope
2 Normative references
3 Noise limits
3.1 Hydraulic machine sound power level limits
3.2 Hydraulic pressure level noise limits
4 Measurement
4.1 Noise level measurement method
4.2 Sound power level measurement
4.3 Noise Measurement Description

Foreword

3.2 This standard is mandatory, the rest are recommended.

Accordance with the standards GB/T 1.1-2009. Drafting Rules "Standardization Guide Part 1 standard structure and preparation of" given.

The standard proposed by China Machinery Industry Federation.

This standard by the National Forging Machinery Standardization Technical Committee (SAC/TC220) centralized.

This standard was drafted. Hefei Metalforming Machine Co., Ltd., Jinan Foundry and Metalforming Machinery Research Institute Co., Ltd., Shenzhen City, measuring Detection Technology Limited surgery.

1 Scope

This standard specifies the hydraulic machine sound power level and sound pressure level of the noise limits.

This standard applies to all types of hydraulic machines, such as a single-column hydraulic machine, four-column hydraulic machine.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 23281 Forging Machinery noise level measurement method GB/T 23282 forging machinery sound power level measurement

3 Noise limits

3.1 Hydraulic machine sound power level limits

Hydraulic machine during continuous idling noise A-weighted sound power level LWA shall not exceed specified in Table 1.

Table 1

Nominal power/kN limit sound power level LWA/dB (A) <=1600 90 > 1600 - 400 094 > 4000 ~ 10,000,102 > 10,000 to 20,000,110 > 20,000,120

3.2 Hydraulic pressure level noise limits

Hydraulic continuous dry run at a predetermined noise A-weighted sound pressure level LpA shall not exceed the position specified in Table 2.

Table 2

Nominal power/kN SPL limit LpA/dB (A) <=1600 80 > 1600 - 400 083 > 4000 ~ 1000087 > 10,000 to 2,000,090 > 2000090

4 Measurement

4.1 Noise level measurement method

Noise level measurement of hydraulic machines shall comply with GB/T 23281 of.

4.2 Sound power level measurement

Sound power level measurement of hydraulic machines shall comply with GB/T 23282 of.

4.3 Noise Measurement Description

4.3.1 factory test only measures the noise level.

4.3.2 The new design or improve the design, technology, materials, new products after the noise level should be measured during the performance test; can then measure the noise Sound power level to the noise level of conformity assessment basis.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 5 pages — is available in the English PDF.

Referenced standards

Normative references

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