GB/T 25420-2021Actuates　the　raker (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 replaces GB/T 25420-2010 "Drive Rake". Compared with GB/T 25420-2010 "Drive Rake", this document except for structural adjustment The main technical changes other than the rectification and editorial changes are as follows:

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

b) Modified the product model description and examples (see Chapter 4, Chapter 3 of the:2010 edition);

c) Revised the requirements for bearing temperature rise in the original text [see 5.5.2c), 4.3.2c) of the:2010 edition];

d) The sealing requirements for folding drive harrows are added (see 5.3.2);

e) The assembly requirements for folding drive harrows are added (see 5.5.3);

f) Modified the safety protection requirements (see 5.8.3, 4.6.2 of the:2010 edition);

g) Added safety information requirements (see 5.8.4);

h) The assembly requirements of the folding drive harrow are added [see 6.3d)].

1 Scope

This document specifies the product model, requirements, test methods, inspection rules, marking, packaging, transportation and storage of drive harrows.

This document is only applicable to the drive harrow matched with the tractor, other types of drive harrow can be implemented by reference.

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 1593 Agricultural wheeled tractor rear mounted three-point hitch 0, 1N, 1, 2N, 2, 3N, 3, 4N and 4 categories

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

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

GB/T 3098.2 Fasteners Mechanical Properties Nuts

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 10395.5 Agricultural and Forestry Machinery Safety Part 5. Driven Tillage 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 20343 Agricultural tractors and mechanical three-point hitch implements - the range of clearance around the implement

JB/T 6279 Disc harrow

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.

4 Product models

4.1 The preparation of the product model should comply with the provisions of JB/T 8574, and it consists of three parts. classification code, feature code and main parameters. END. Draft Version (GB/T 25420-2021)