GB/T 17300-2017 PDF in English
GB/T 17300-2017 (GB/T17300-2017, GBT 17300-2017, GBT17300-2017)
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| GB/T 17300-2017 | English | 395 |
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Earth-moving machinery -- Access systems
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| GB/T 17300-2010 | English | 799 |
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Earth-moving machinery -- Access systems
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| GB/T 17300-1998 | English | 559 |
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Earth-moving machinery--Access systems
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Standards related to (historical): GB/T 17300-2017
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GB/T 17300-2017: PDF in English (GBT 17300-2017) GB/T 17300-2017/ISO 2867:2011
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 53.100
P 97
GB/T 17300-2017 / ISO 2867:2011
Replacing GB/T 17300-2010
Earth-moving machinery - Access systems
(ISO 2867:2011, IDT)
ISSUED ON: DECEMBER 29, 2017
IMPLEMENTED ON: JULY 01, 2018
Issued by: General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
Introduction ... 5
1 Scope ... 6
2 Normative references ... 6
3 Terms and definitions ... 7
4 Requirements for access systems ... 13
5 Requirements for enclosure openings ... 16
6 Requirements for guardrails, foot barriers, platforms, passageways, walkways and
other surfaces used for walking, crawling, climbing, stepping or standing ... 19
7 Requirements and recommendations for handrails and handholds ... 21
8 Requirements for stairways and steps ... 24
9 Requirements for ladders ... 27
Annex A (Informative) Examples of surfaces considered to be slip-resistant ... 30
Annex B (Normative) Additional requirements for powered retractable access system
that transports a person ... 31
Bibliography ... 33
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 17300-2010, Earth-moving machinery - Access systems.
Compared with GB/T 17300-2010, the main technical changes, except editorial changes,
are as follows:
⎯ ADD references to relevant standards (see Clause 2; Clause 2 of the 2010 edition);
⎯ ADD and MODIFY several terms and definitions, DELETE operator platform (see
3.14.1 of the 2010 edition) and cleat (see 3.17 of the 2010 edition);
⎯ ADD general requirements for access systems (see 4.1);
⎯ MODIFY removable access systems TO retractable access systems, and ADD
relevant requirements (see 4.2; 4.2 of the.2010 edition);
⎯ MODIFY alternative exit path TO alternative exit path and opening, and ADD
relevant requirements (see 4.3; 4.3 of the 2010 edition);
⎯ ADD requirements for specific tracked machines with a rotating upper structure
(see 4.4);
⎯ MODIFY relevant dimensions of enclosure openings: corner radius (see Table 1;
11.12 of the 2010 edition), maximum height of internal door handle from floor -
operator standing position and maximum height of external door handle above
standing surface (see Table 1; Table 4 of the 2010 edition), hand clearance of the
hinged door (see 5.9; 11.9 of the 2010 edition);
⎯ COMBINE walking or standing surfaces AND platforms, passageways, walkways,
guardrails, foot barriers in the original standard (see Clause 6; Clause 5 and Clause
10 of the 2010 edition); ADD the requirements for the horizontal opening between
the two vertical ends of guardrails (see 6.2.4), the minimum length of a platform
(see 6.2.7), maintenance (see 6.3), and the boom walkways (see 6.4) in the clauses,
and MODIFY dimensions of platforms, passageways, walkways, guardrails, and
foot barriers (see Table 2; Figure 3 of the 2010 edition);
⎯ ADD the maximum spacing between adjacent handrails (see 7.3) and the
requirements that handrail and handhold be installed on movable parts (see 7.9);
⎯ COMBINE stairways and steps in the original standard (see Clause 8; Clause 6 and
Clause 8 of the 2010 edition); MODIFY the distance between the step and the
nearest edge of the stepping surface (see Table 7; 6.2 of the 2010 edition); MODIFY
single-step retracted step system TO track frame/retracted step system AND related
requirements (see 8.2.8; 6.6 of the 2010 edition);
⎯ MODIFY vertical ladder flights that extend more than 5 m in vertical distance from
the ground shall be equipped with a ladder fall-limiting device TO 3 m (see 9.2;
7.2 of the 2010 edition);
⎯ ADD examples of surfaces considered to be slip-resistant (see Annex A);
⎯ ADD additional requirements for powered retractable access system that transports
a person (see Annex B).
This Standard adopts ISO 2867:2011 Earth-moving machinery - Access systems by
using the translation method.
The documents of our country that have a consistent correspondence with the
international documents that are referenced in this Standard are as follows:
⎯ GB/T 8420-2011, Earth-moving machinery - Physical dimensions of operators and
minimum operator space envelope (ISO 3411:2007, IDT);
⎯ GB/T 8498-2017, Earth-moving machinery - Basic types - Identification and terms
and definitions (ISO 6165:2012, IDT);
⎯ GB/T 17301-1998, Earth-moving machinery - Operator station and maintenance
areas - Bluntness of edges (idt ISO 12508:1994);
⎯ GB/T 17888.4-2008, Safety of machinery - Permanent means of access to
machinery - Part 4: Fixed ladders (ISO 14122-4:2004, IDT).
This Standard was proposed by China Machinery Industry Federation.
This Standard shall be under the jurisdiction of National Technical Committee on Earth-
moving Machinery of Standardization Administration of China (SAC/TC 334).
Drafting organizations of this standard: Xuzhou Heavy Machinery Works of XCMG,
Tianjin Research Institute of Construction Machinery Co., Ltd., Xiamen XGMA
Machinery Company Limited.
Organizations that participate in the drafting of this Standard: Inner Mongolia North
Hauler Joint Stock Co., Ltd., Lingong Group Jinan Heavy Machinery Co., Ltd.
Main drafters of this Standard: Zhao Bin, Jia Xiaowen, Chen Shuqiao, Jiang Lei, Yan
Junli, Wang Huanli, Guan Enlu, Wang Xia.
The previous editions replaced by this Standard are:
⎯ GB/T 17300-1998, GB/T 17300-2010.
Earth-moving machinery - Access systems
1 Scope
This Standard specifies criteria for systems that provide access to the operator station
and to routine maintenance points on earth-moving machinery as defined in ISO 6165.
It is applicable to the access systems (e.g., enclosure openings, platforms, guardrails,
handrails and handholds, stairways and steps, ladders) on such machines parked in
accordance with the manufacturer's instructions. Its criteria are based on the 5th to 95th
percentile operator dimensions as defined in ISO 3411. It deals with the following
significant hazards, hazardous situations and events: slip, trip and fall of persons,
unhealthy postures and excessive effort.
The general principles set out in this Standard can be used for the selection of fixed
and/or portable access systems for repairs, assembly, disassembly and longer interval
maintenance.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 17888.1-2008, Safety of machinery – Permanent means of access to
machinery – Part 1: Choice of a fixed means of access between two levels (ISO
14122-1:2001, IDT)
ISO 3411, Earth-moving machinery – Physical dimensions of operators and
minimum operator space envelope
ISO 6165, Earth-moving machinery – Basic type – Identification and terms and
definitions
ISO 12508, Earth-moving machinery – Operator station and maintenance areas –
Bluntness of edges
ISO 14122-4, Safety of machinery – Permanent means of access to machinery -
Part 4: Fixed ladders
ISO 14567, Personal protective equipment for protection against falls from a
height – Single-point anchor devices
5.2 For primary openings that are modified rectangles, the minimum opening area may
be reduced to the minimum opening dimensions indicated by dashed lines in the
drawing in Table 1. Alternatively, the vertical distance from the floor of the lower
(narrower) area of the minimum opening may be increased from 460 mm to 770 mm
maximum, in conjunction with an increase in the minimum width from 250 mm to 300
mm. The shape of openings does not need to be symmetrical.
5.3 For compact excavators, minimal swing radius excavators and compact machines
that by design require front entrance or step-down into the operator enclosure (e.g., skid
steer loaders), the dimensions given in 5.3.1 and 5.3.2 may be used instead of those
given in Table 1.
5.3.1 The width, A, of the primary opening shall be greater than 550 mm and the height,
B, of the opening above the sill shall be greater than 875 mm.
5.3.2 The dimensions of an alternative opening shall permit the passage of a rectangle
380 mm × 550 mm with a radius in accordance with Table 1.
5.4 The primary opening door(s) of the enclosure, if so equipped, shall permit opening
and closing without interfering with the user, while maintaining three-point support.
Contact with the door, or parts attached to the door, shall not be considered one of the
points of support while opening or closing the door.
5.5 The force needed to open or close a hinged primary enclosure door shall not exceed
135 N. The force needed to open or close all other hinged access doors or covers shall
not exceed 245 N. This applies to the opening and closing of the door, not to the
activation of the latch.
5.6 An enclosure door shall be designed with a means to secure it in the closed position.
An enclosure door that is designed to be left open during machine operation shall be
provided with a means to secure it in the open position and shall be able to withstand a
closing force of 300 N without failure of the securing device.
5.7 Doors shall be designed to prevent hazardous door movements due to inertial force
caused by machine operations.
5.8 Hinged doors shall normally open outward.
5.9 A minimum of 40 mm hand clearance shall be provided
a) between the outer edge of a hinged door and any fixed object other than its door
frame, and
b) from any fixed part that might come into contact with the hand when removing or
opening other types of enclosures, doors or covers that are within the scope of this
Standard.
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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