GB/T 24818.4-2017Cranes -- Access, guards and restraints -- Part 4: Jib cranes (English PDF)

Foreword

GB/T 24818 "Crane passage and safety protection facilities" is divided into five

parts:

- Part 1: General;

- Part 2: Mobile cranes;

- Part 3: Tower cranes;

- Part 4: Jib cranes;

- Part 5: Bridge and gantry cranes.

This part is part 4 of GB/T 24818.

This part was drafted in accordance with the rules given in GB/T 1.1-2009.

This part, through redrafting method, modifies and adopts ISO 11660-4:2012

"Cranes - Access, guards and restraints - Part 4: Jib cranes".

As compared with ISO 11660-4:2012, this part has no change in structure.

The technical differences and reasons for this part and ISO 11660-4:2012 are

as follows:

- Regarding the normative references, this part has made technical

adjustments to be consistent with the standards related to "mechanical

safety" in China, as follows:

This part uses GB 23821 instead of ISO 13852 (GB 23821-2009, ISO

13857:2008, IDT. ISO 13857:2008 instead of ISO 13852).

This part has made the following editorial changes:

- In order to be consistent with the provisions in the text, ADD the symbol

"< " in front of the number 1.8 in Figure 1.

This part was proposed by the China Machinery Industry Federation.

This part shall be under the jurisdiction of the National Crane Machinery

Standardization Technical Committee (SAC/TC 227).

Drafting organizations of this part: Water Transport Science Research Institute

if Ministry of Transport, Wuhan University of Technology, Beijing Crane

Transportation Machinery Design and Research Institute, Shanghai

International Port (Group) Co., Ltd., Qinhuangdao Port Co., Ltd., Shanghai

Cranes - Access, guards and restraints -

Part 4: Jib cranes

1 Scope

This part of GB/T 24818 specifies the special requirements for the access,

guards and restraints of jib cranes (hereinafter referred to as cranes).

GB/T 24818.1 determines the general requirements for the access to the

console and other parts of the crane during normal operation, inspection,

maintenance, installation, disassembly of cranes as defined in GB/T 6974.1, as

well as the general requirements for safety protection devices to protect the

personnel on or near crane from being injured by the moving parts, descending

parts, rotating parts.

This part applies to the jib crane as defined in GB/T 6974.1.

2 Normative references

The following documents are essential to the application of this document. For

the dated documents, only the versions with the dates indicated are applicable

to this document; for the undated documents, only the latest version (including

all the amendments) are applicable to this standard.

GB 23821 Safety of machinery - Safety distances to prevent hazard zones

being reached by upper and lower limbs (GB 23821-2009, ISO 13857:2008,

IDT)

GB/T 24818.1-2009 Cranes - Access, guards and restraints - Part 1: General

(ISO 11660-1:2008, IDT)

3 Terms and definitions

The terms and definitions as defined in GB/T 24818.1 apply to this document.

4 Access

5 Safety protection facilities