GB/T 24675.5-2021Conservation tillage equipment—Part 5:Smashed root stubble machine (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

This document is part 5 of GB/T 24675 "Conservation tillage machinery". GB/T 24675 has published the following parts.

--- Part 1. Shallow loosening machine;

--- Part 2. Subsoilers;

--- Part 3. Spring tines;

--- Part 4. Disc harrows;

--- Part 5. Stubble crushing and returning machine;

--- Part 6. Straw crushing and returning machines.

This document replaces GB/T 24675.5-2009 "Conservation tillage machinery stubble crushing and returning machine". and GB/T 24675.5-2009 In contrast, except for structural adjustments and editorial changes, the main technical changes are as follows:

a) terms and definitions are added (see Chapter 3);

b) Changed the requirements for type preparation (see Chapter 4, Chapter 3 of the:2009 edition);

c) Changed the technical index of stubble depth stability (see Table 1, 4.1 of the:2009 edition);

d) Changed the reliability index (see Table 2, 4.2 of the:2009 edition);

e) The general technical requirements are deleted (see 5.1 of the:2009 edition);

f) Added the application of new materials and new processes (see 6.1.9);

g) The requirements for grading of chopper blades by mass and size are added (see 6.1.10);

h) Added the requirements for dynamic balance of the cutter shaft (see 6.2.2);

i) Added the technical requirements for the foldable stubble crusher (see 6.3.3 and 7.5);

j) Added the test method for shredding blade hardness (see 8.5);

k) Added appearance and paint film adhesion testing methods (see 8.4.4 and 8.4.5);

l) Changed and refined the safety technical requirements (see 7.2, Chapter 6 of the:2009 edition);

m) Changed the reliability inspection time (see 8.3.1, 7.3 of the:2009 edition);

n) Changed the reliability calculation method (see 8.3.2, 7.3 of the:2009 edition);

o) The test method for power consumption of the supporting tractor has been added (see 8.6.5);

p) Changed the classification of unqualified items (see Table 4, Table 4 of the:2009 edition);

q) Changed the qualification determination method (see Table 5, Table 5 of the:2009 edition).

Introduction

The core content of conservation tillage is to implement no-till or less tillage, to reduce the intensity and frequency of soil tillage as much as possible, and to use crop straw.

Cover the surface with stubble to protect the surface, and support the corresponding agronomic cultivation techniques to protect the output capacity of the natural function of the soil. for reforming traditional industrial production methods, improve drought resistance, increase farmers' income, improve the ecological environment, promote sustainable agricultural development, and protect cultivated land resources.

Important strategic significance and far-reaching historical significance. It has been widely popularized in my country, and the realization of conservation tillage is inseparable from agronomic farming.

The technical support of industrial equipment requires the cooperation of agricultural equipment with different operating conditions and performance. Therefore, the protection is composed of different types of operations. Sexual farming standard system.

GB/T 24675 "Conservation tillage machinery" consists of the following parts.

--- Part 1. Shallow loosening machine;

--- Part 2. Subsoilers;

--- Part 3. Spring tines;

--- Part 4. Disc harrows;

--- Part 5. Stubble crushing and returning machine;

--- Part 6. Straw crushing and returning machines.

This document is part 5 of GB/T 24675, which is aimed at the special characteristics of the conservation tillage that leave a large amount of stubble on the land after harvest and affect no-tillage sowing.

The technical requirements and test evaluation methods of the stubble crushing and returning machine for conservation tillage are completely given, which is helpful for the manufacture and application of the stubble crushing and returning machine for conservation tillage. Product upgrades provide a standard basis. Conservation tillage machinery Part 5. Stubble crushing and returning machine

1 Scope

This document specifies the model preparation, evaluation indicators, technical requirements, safety requirements, test methods of protective tillage machinery stubble crushing and returning machines. laws, inspection rules and marking, packaging, transportation and storage.

This document is applicable to the stubble crushing and returning machine (hereinafter referred to as the stubble crushing and returning machine) matched with the tractor.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 275 Rolling Bearing Matching

GB/T 699 High Quality Carbon Structural Steel

GB/T 2828.1 Counting Sampling Inspection Procedure Part 1. Lot-by-Lot Inspection Sampling Plan Retrieved by Acceptance Quality Limit (AQL)

GB/T 3077-2015 Alloy Structural Steel

GB/T 3098.1-2010 Mechanical properties of fasteners Bolts, screws and studs

GB/T 3098.2-2015 Fasteners Mechanical Properties Nuts

GB/T 3478.1 Cylindrical spur involute splines (metric module flank fit) Part 1. General

GB/T 5263 Agricultural and forestry tractors and mechanical power take-off universal joint drive shaft protective cover strength and wear test and acceptance specification

GB/T 5667 Agricultural Machinery Production Test Method

GB/T 9480 Agricultural and Forestry Tractors and Machinery, Lawn and Gardening Power Machinery Operating Instructions Compilation Rules

GB 10395.1 Agricultural and Forestry Machinery Safety Part 1. General

GB 10395.5-2013 Agricultural and Forestry Machinery Safety Part 5. Driven Farming Machinery

GB 10396 Agricultural and Forestry Tractors and Machinery, Lawn and Garden Power Machinery Safety Signs and Hazard Graphics General

GB/T 13306 Signs

GB/T 17126.1 Agricultural tractors and mechanical power take-off universal joint drive shafts and power input connecting devices - Part 1. General manufacturing and safety requirements

JB/T 5673 General technical conditions for painting of agricultural and forestry tractors and implements

JB/T 8574 Agricultural Machinery Product Model Compilation Rules

JB/T 9832.2 Determination method of paint film adhesion performance of agricultural and forestry tractors and implements Press cutting method

JB/T 10205 Hydraulic cylinder

3 Terms and Definitions

The following terms and definitions apply to this document. END. Draft Version (GB/T 24675.5-2021)