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GB/T 19930-2005Earth-moving machinery -- Tip-Over Protection Structure (TOPS) for compact excavators -- Laboratory tests and performance requirements (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the PRC

Level / Type

National · Recommended

Issue date

September 19, 2005

Implementation date

April 1, 2006

Scope

GB/T 19930-2005 (Earth-moving machinery -- Tip-Over Protection Structure (TOPS) for compact excavators -- Laboratory tests and performance requirements) is available as an English-translated PDF.

GB/T 19930-2005 — This Standard establishes a consistent and reproducible means of evaluating the load-carrying characteristics of tip-over protective structures (TOPS) under static loading, and prescribes performance requirements of a representative specimen under such loading.

This Standard applies to TOPS of compact excavators (as defined in GB/T 8498) with swing type boom, having an operating mass of 1000 kg~6000 kg.

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Document preview — GB/T 19930-2005

National Standard of the People's Republic of China

ICS: 53.100
Classification: P 97

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the PRC

Foreword...3
1 Scope...5
2 Normative references...5
3 Terms and definitions...6
4 Symbols and units...9
5 Test method and facilities...11
5.1 General...11
5.2 Instrumentation...11
5.3 Test facilities...11
5.4 TOPS/swing frame to bedplate...11
6 Test loading procedures...12
6.1 General...12
6.2 Lateral loading...13
7 Material temperature...14
8 Acceptance...15
9 Labelling of the TOPS...16
10 Reported results...17
Annex A (Normative) Test report for TOPS conforming to GB/T 19930-2005 .18
Annex B (Informative) Longitudinal loading test of TOPS...20

Foreword

This Standard is developed for the first time.

This Standard modifies and adopts ISO 12117.1997 "Earth-moving machinery

- Tip-over protection structure (TOPS) for compact excavators - Laboratory

tests and performance requirements" (English edition), including its Technical

Corrigendum 1 published on December 1, 2000.

This Standard is redrafted in accordance with ISO 12117.1997.

The technical differences between this Standard and ISO 12117.1997 are as

follows.

a) For normative references.

- ISO 12117.1997 refers to two ISO standards to be published. This

Standard refers to the national standards which adopt the current edition

of the international standards. GB/T 8498-1999 "Earth-moving

machinery - Basic types - Vocabulary" (eqv ISO 6165.1997) and GB/T

19932-2005 "Earth-moving machinery - Hydraulic excavators -

Laboratory tests and performance requirements for operator protective

guards" (ISO 10262.1998, MOD). This Standard accordingly deletes

Footnote 1) and Footnote 2) related to edition statement in ISO

12117.1997;

- ISO 12117.1997 refers to ISO 898-1.1988. This Standard refers to GB/T

3098.1-2000 "Mechanical Properties of Fasteners - Bolts, Screws and

Studs" which adopts ISO 898-1.1999.

b) DELETE the note in 7.2 of ISO 12117.1997 "Note. In those countries using

the inch system, it is important that the bolts and nuts used be of an

equivalent grade.".

For ease of use, this Standard has also made some editorial changes.

- The word "this International Standard" is changed to "this Standard";

- USE the decimal point "." instead of "," as the decimal point;

- DELETE the Foreword of the International Standard.

Annex A of this Standard is a normative annex. Annex B is an informative annex.

This Standard was proposed by China Machinery Industry Federation.

Earth-moving machinery - Tip-Over Protection

Structure (TOPS) for compact excavators - Laboratory

tests and performance requirements

1 Scope

This Standard establishes a consistent and reproducible means of evaluating

the load-carrying characteristics of tip-over protective structures (TOPS) under

static loading, and prescribes performance requirements of a representative

specimen under such loading.

This Standard applies to TOPS of compact excavators (as defined in GB/T 8498)

with swing type boom, having an operating mass of 1000 kg~6000 kg.

2 Normative references

The following documents contain the provisions which, through reference in this

Standard, become the provisions of this Standard. For the dated references,

their subsequent amendments (excluding corrections) or revisions do not apply

to this Standard. However, the parties who enter into agreement based on this

Standard are encouraged to investigate whether the latest editions of these

documents are applicable. For undated reference documents, the latest

editions apply to this Standard.

GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (GB/T

229-1994, eqv ISO 148.1983)

GB/T 3098.1 Mechanical Properties of Fasteners - Bolts, Screws and Studs

(GB/T 3098.1-2000, idt ISO 898-1.1999)

GB/T 3098.2 Mechanical properties of fasteners - Nuts - Coarse thread

(GB/T 3098.2-2000, idt ISO 898-2.1992)

GB/T 6572.1-1997 Hydraulic excavators - Terminology (eqv ISO 7135.1993)

GB/T 8498 Earth-moving machinery - Basic types - Vocabulary (GB/T 8498-

1999, eqv ISO 6165.1997)

GB/T 17772-1999 Earth-moving machinery - Laboratory evaluations of

protective structures - Specifications for deflection-limiting volume (idt ISO

3164.1995)

GB/T 17921-1999 Earth-moving machinery - Seat belts and seat belt

anchorages (idt ISO 6683.1981)

GB/T 19932 Earth-moving machinery - Hydraulic excavators - Laboratory

tests and performance requirements for operator protective guards (GB/T

19932-2005, ISO 10262.1998, MOD)

JB/T 7690 Engineering machinery - Unit and measurement accuracy for

dimension and performance (JB/T 7690-1995, eqv ISO 9248.1992)

3 Terms and definitions

The following terms and definitions apply to this Standard.

3.1 Tip-over protective structure (TOPS)

System of structural members whose primary purpose is to reduce the

possibility of an operator, held by a seat belt system (3.5), being crushed

should a machine tip-over.

Note. Structural members include any subframe, bracket, mounting, socket, bolt, pin,

suspension, flexible shock absorber used to secure the system to the swing frame;

but exclude mounting provisions that are integral with the swing frame.

3.1.1 Cabin type TOPS

TOPS for machines with a cabin.

3.1.2 Canopy type TOPS

TOPS for machines having an open canopy.

Note. Both of these types of TOPS are considered to be integrated with the main members

of the TOPS for the evaluation test, whether they are separated from the load

carrying members or not.

3.2 Falling object guard (FOG)

System of top guard and front guard for the protection of the hydraulic excavator

operator station. (See GB/T 19932.)

3.3 Swing frame

Main chassis or main load bearing structural member(s) of the revolving upper

frame of the mini-excavator upon which the TOPS is directly mounted.

......

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 148.1983 · ISO 898 · GB/T 6572.1-1997 · ISO 7135.1993 · GB/T 8498 · ISO 6165.1997 · ISO 6683.1981 · GB/T 19932 · ISO 10262.1998 · ISO 9248.1992

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