GB/T 18961-2023Portable brush-cutters and grass-trimmers - Vocabulary (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 for Standardization Documents" drafting.

This document replaces GB/T 18961-2012 "Forestry Machinery Portable Mowers and Brush Cutters Vocabulary", and GB/T 18961- Compared with 2012, except for structural adjustment and editorial changes, the main technical changes are as follows:

a) Changed "logging", "brushcutter", "circular saw brushcutter", "low speed mixture regulator", "exhaust system", "knapsack power unit" The definition of "maximum power speed" (see 3.1.1, 3.2.1, 3.2.2, 3.6.2, 3.8.1, 3.9.2 and 3.9.9, 2.1.1, 2012 edition 2.2.1, 2.2.2, 2.6.2, 2.8.1, 2.9.2 and 2.9.9);

b) Changed the term "crushing" to "shredding" and revised its definition (see 3.1.2, 2.1.2 of the 2012 edition);

c) Change the term "blade bounce" to "cutting part bounce" and modify its definition (see 3.1.4, 2.1.4 of the 2012 edition);

d) Changed the term "blade" to "cutting part" and revised its definition (see 3.3.1.1, 2.3.2 of the 2012 edition);

e) Changed the term "slinging cutting part" to "flexible cutting part" and revised its definition (see 3.3.1.3, 2012 edition 2.3.4);

f) Changed the term "blade support device" to "cutting part fixture" and revised its definition, adding two terms "Circular saw blade fixing device" and "fixing device" (see 3.4.1, 2.4.1 of the 2012 edition);

g) Change the term "cutting accessory safety cover" to "cutting accessory guard" (see 3.4.2, 2.4.2 of the 2012 edition);

h) Changed the term "blade cover" to "cutting part cover" and revised its definition, while adding the term "transport cover" (see 3.4.3, 2.4.3 of the 2012 edition);

i) Change the term "hand pull back rope starter" to "rebound rope starter" and modify its definition (see 3.5.3.1, 2012 version 2.5.3.1);

j) Change the term "electric starter" to "electric starter" and modify its definition (see 3.5.3.2, 2.5.3.2 of the 2012 edition);

k) Changed the term "starting throttle locking device" to "throttle control lock", and revised its definition (see 3.5.5, 2012 edition 2.5.5);

l) Changed the term "hand grip area" to "grip area" and revised its definition (see 3.7.2, 2.7.2 of the 2012 edition);

m) Change the term "high-speed idling speed" to "highest idling speed" and modify its definition (see 3.9.10, 2012 edition 2.9.10);

n) Added the terms and definitions of "net mass/net weight" (see 3.9.11).

This document is equivalent to ISO 7112:2018 "Vocabulary of portable brush cutters and lawn mowers for forestry machinery".

The following minimal editorial changes have been made to this document.

--- In order to coordinate with existing standards, change the name of the standard to "Vocabulary of Portable Brush Cutters and Lawn Mowers";

--- Notes are added after the terms "throttle trigger", "idle speed regulator", "low speed mixture regulator" and "high speed mixture regulator";

--- Added index.

1 Scope

This document defines terms related to portable brush cutters and lawn mowers, their cutting components and power parts.

See Appendix A for the various working positions of the brush cutter.

2 Normative references

This document has no normative references.

3 Terms and Definitions