GB 19997-2025Harvesting machinery - Noise limits (English PDF)

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

This document replaces GB 19997-2005 "Noise Limits for Grain Combine Harvesters". Compared with GB 19997-2005, except for structural adjustments... Aside from integration and editorial changes, the main technical changes are as follows.

a) The correspondence between the power ratings and noise limits of the engines used in harvesting machinery has been changed (see Table 1, Table 1 in the 2005 edition);

b) Noise limits for harvesting machinery have been changed (see Table 1, 2005 edition);

c) Noise limits for single-cylinder engines used in harvesting machinery have been increased (see Table 1).

This document was first published in 2005, and this is its first revision.

Introduction

With advancements in harvesting machinery technology and increased public awareness of environmental and health concerns, noise control measures for harvesting machinery are becoming increasingly important.

This has become an important measure for protecting the environment and safeguarding drivers' hearing. When setting noise limits, both environmental protection needs and drivers' hearing safety must be considered.

This includes the overall technological level of domestic harvesting machinery products. Furthermore, given the advancements in technology, particularly the achievements in noise control, harvesting machinery must be designed and manufactured to minimize noise emissions in order to reduce potential impacts on the environment and human health.

During the design phase of harvesting machinery, feasible noise control solutions and technologies must be fully evaluated.

1 Scope

This document specifies the dynamic environmental noise limits for harvesting machinery and the noise limits at the driver's operating position (near the ear), and describes the corresponding measurement methods.

This document applies to self-propelled combine harvesters, corn harvesters, forage harvesters, cotton harvesters, and sugarcane combine harvesters.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

JB/T 6268 Method for Determining Noise in Self-Propelled Harvesting Machinery

3 Terms and Definitions

The following terms and definitions apply to this document.

4 Noise Limits

The dynamic environmental noise of harvesting machinery and the noise at the driver's operating position (near the ear) should comply with the provisions of Table 1. […]