GB/T 20790-2024Head-feed combine harvesters - Technical requirements (English PDF)

1 Scope

This document specifies product models, safety requirements, main performance indicators, technical requirements, inspection rules, as well as marking, packaging, transportation and storage:

The corresponding test methods are described:

This document applies to semi-feed combine harvesters that harvest rice or mainly harvest rice and also harvest wheat crops (hereinafter referred to as "combine harvesters" cutting machine”):

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document:

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document:

GB/T 1209 (all parts) Agricultural machinery cutters

GB/T 6979:1 Harvesting machinery Combine harvesters and functional components Part 1: Vocabulary

GB/T 8097 Test methods for harvesting machinery - Combine harvesters

GB/T 9480 Rules for writing instructions for agricultural and forestry tractors and machinery, lawn and gardening power machinery

GB 9656 Technical Specification for Safety of Motor Vehicle Glass

GB/T 10395:1 Safety of agricultural and forestry machinery Part 1: General principles

GB 10396 General rules for safety signs and hazard symbols for agricultural and forestry tractors and machinery, lawn and gardening power machinery

GB/T 13306 Labels

GB/T 14039-2002 Code for solid particle contamination level of hydraulic transmission oil

GB/T 14248 Method for determination of braking performance of harvesting machinery

GB 20891 Emission limits and measurement methods for exhaust pollutants from diesel engines for non-road mobile machinery (China Phase III and IV)

GB/T 30965 Earth-moving machinery - Determination of the average ground pressure of tracked machines

HJ1014 Technical requirements for pollutant emission control of non-road diesel mobile machinery

JB/T 5243 Method for determination of cleanliness of transmission box of harvesting machinery

JB/T 6268 Self-propelled harvesting machinery noise determination method

JB/T 6287 Test method for reliability assessment of grain combine harvesters

JB/T 7316 Test methods for hydraulic systems of grain combine harvesters

JB/T 8574 Rules for the compilation of agricultural machinery product models

NY/T 2188 Technical requirements for the installation of license plate holders for combine harvesters

3 Terms and definitions

The terms and definitions defined in GB/T 6979:1 and the following apply to this document:

3:1

Alongcut

The combine harvester is engaged in harvesting operations in which the direction of movement of the harvester is consistent with the direction of crop lodging: […]