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GB 17957-2021: Rock drilling machines and pneumatic tools - Safety requirements
GB 17957-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 13.110; 73.100.10
J 84
Replacing GB 17957-2005
Rock drilling machines and pneumatic tools - Safety
requirements
ISSUED ON: APRIL 30, 2021
IMPLEMENTED ON: MAY 01, 2022
Issued by: State Administration for Market Regulation;
National Standardization Administration.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 6
4 General safety requirements ... 7
5 Special safety requirements for specific machines ... 25
6 Verification of safety requirements/measures ... 27
7 Usage information ... 28
Appendix A (Normative) Methods for measuring noise in the operating room ... 30
References ... 31
Rock drilling machines and pneumatic tools - Safety
requirements
1 Scope
This standard specifies the general safety requirements for rock drilling machines and
pneumatic tools during design, manufacture, use, maintenance.
This standard applies to rock drilling machines powered by pneumatic, electric,
hydraulic or internal combustion, tools and machines driven by compressed air, non-
electrically driven power tools and auxiliary equipment (hereinafter referred to as
products or machines).
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) is
applicable to this standard.
GB 2894 Safety signs and guideline for the use
GB/T 3766 Hydraulic fluid power - General rules and safety requirements for
systems and their components
GB 4351.1 Portable fire extinguishers - Part 1: Performance and construction
GB/T 5226.1-2019 Electrical safety of machinery - Electrical equipment of
machines - Part 1: General requirements
GB/T 5898 Hand-held non-electric power tools - Noise measurement code -
Engineering method (grade 2)
GB/T 6247 (all parts) Rock drilling machines and portable power tools -
Terminology
GB/T 7932 Pneumatic fluid power - General rules and safety requirements for
systems and their components
GB/T 8196 Safety of machinery - Guards - General requirements for the design and
construction of fixed and movable guards
If the pressure may cause danger, the residual pressure in the pressure system shall be
released.
Any component or element that can change the direction of hydraulic oil injection can
be used as an effective protective device.
Rigid pipes and hoses shall be able to withstand the usage pressure. The hose shall be
clearly marked with its rated working pressure and shall comply with the relevant
requirements of GB/T 3766 and GB/T 7932.
4.1.12 Pipe joints
Various pipe joints, including the air intake (oil, water) joints and threaded joints of the
machine itself, shall adopt reliable anti-loosening and anti-leakage (oil, water)
structures; it shall ensure sufficient strength.
The joints used to connect impact machines shall also ensure that they have the
characteristics of impact resistance and vibration resistance.
4.1.13 Valves
The valves shall be well sealed, open flexibly; there shall be no leakage (oil, water)
after closing.
4.1.14 Risk of slipping, tripping or falling
For mechanical parts where people often walk or stand, their design and manufacture
shall prevent people from slipping, tripping, falling, or falling from these parts.
If necessary, these parts shall be equipped with handrails that are relatively fixed to the
user and maintain their stability.
4.1.15 Protection of moving parts
4.1.15.1 General
The design, manufacture, layout of moving parts of rock drilling machines and
pneumatic tools shall be able to avoid the hazards described in GB/T 15706.
4.1.15.2 Transmission parts
All rotating or reciprocating parts, except the drill rod propulsion mechanism and the
travel mechanism, as well as the portable power tools mentioned in the specific safety
requirements, shall be equipped with protective devices to avoid contact. The protective
devices shall comply with the requirements of GB/T 8196. The protective devices shall
be firmly manufactured and reliably fixed. For transmission parts that are not often
approached, fixed protective devices shall be installed. Fixed protective devices shall
be fixed by welding or by using necessary tools or keys to open or move them.
4.1.15.3 Moving parts during operation
The design, manufacture, installation of rock drilling machines and pneumatic tools
shall minimize manual operation in danger zones.
The product information shall remind users to set up warning signs in the restricted
areas during the operation of rock drilling machines and pneumatic tools.
For handheld or outrigger-type rock drills, the product information shall remind users
to always pay attention to the safety hazards caused by the drill clamp not being locked
or the drill rod being broken.
4.1.16 Noise
The noise shall not exceed the provisions of GB 19872.
4.1.17 Fire prevention
4.1.17.1 Flame retardant
The manufacturing materials of rock drilling machines and pneumatic tools shall be as
fire resistant as possible. The decorative materials in the cab shall be flame retardant
materials. The maximum value shall not exceed 250 mm/min, when the material flame
spread linear velocity test is carried out according to GB/T 20953.
4.1.17.2 Flame retardant
For machines driven by the driver, the inner walls, interior decoration and insulation
layer of the cab and other parts of the machine using insulating materials shall be made
of flame retardant materials. When tested according to GB/T 20953, the burning rate
shall not exceed 200 mm/min.
4.1.17.3 Fire extinguisher
Machines with a working mass greater than 1500 kg shall have at least one space for
storing fire extinguishers, which shall be easily accessible to the driver or operator. A
passage shall be set up to allow the driver or operator to escape from the machine safely.
4.1.18 Dust and exhaust gas
4.1.18.1 Dust removal or dust prevention measures
Dry-type rock drilling machines shall have dust removal or dust prevention measures.
4.1.18.2 Emissions from machinery
Emissions from machinery and equipment shall comply with the relevant requirements
of GB/T 15706.
- The laser devices installed on machinery shall be protected, so that their effective
radiation or the radiation and secondary radiation generated by reflection or
scattering will not harm human health;
- The optical devices used on the machinery to observe and adjust the laser devices
shall not cause the risk of laser rays causing health hazards.
4.1.20 Safety requirements for special safety equipment used in products
Special equipment, such as pressure vessels, used in products shall be purchased from
manufacturers with special equipment manufacturing licenses and certificates of
qualified inspection by manufacturers.
4.2 General safety requirements for non-portable machines
4.2.1 Instructions for use
Graphic symbols or signs shall be used to remind operators to read the operating
instructions before starting work; sufficient information to remind operators to use
safety shall be stated in the product usage information.
4.2.2 Pipeline layout
During the design stage of the product, the layout of various gas, hydraulic, water
pressure pipelines shall min...