DB13T1239-2010 PDF in English
DB13T1239-2010 PDF English
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DB13T1239-2010: PDF in English DB13/T 1239-2010
DB13
LOCAL STANDARD OF HEBEI PROVINCE
ICS 21
J 10
General Technical Conditions for Down-the-hole Drilling
Rigs and Drilling Machinery
ISSUED ON. JULY 20, 2010
IMPLEMENTED ON. AUGUST 10, 2010
Issued by. Hebei Provincial Bureau of Quality and Technical Supervision
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Terms and Definitions... 6
4 Requirements for Model Naming... 6
5 Safety Requirements... 7
6 General Technical Requirements... 10
7 Test Methods... 13
8 Inspection Rules... 15
9 Marking, Packaging, Transportation and Storage... 16
General Technical Conditions for Down-the-hole Drilling
Rigs and Drilling Machinery
1 Scope
This document specifies the general technical specifications that shall be followed by down-
the-hole drilling rigs and drilling machinery products. The content includes the terms and
definitions, model naming requirements, safety requirements, general technical requirements,
test methods, inspection rules, and the requirements for marking, packaging, transportation and
storage of this type of machinery products.
This Standard is applicable to down-the-hole drilling rigs and drilling machinery products
produced within Hebei Province.
2 Normative References
The following documents are indispensable to the application of this document. In terms of
references with a specified date, only versions with a specified date are applicable to this
document. In terms of references without a specified date, the latest version (including all the
modifications) is applicable to this document.
GB/T 156 Standard Voltages
GB 755 Rotating Electrical Machines - Rating and Performance
GB 3836.1 Explosive Atmospheres - Part 1.Equipment - General Requirements
GB 3836.2 Electrical Apparatus for Explosive Gas Atmospheres - Part 2.Flameproof Enclosure
“d”
GB 3836.3 Electrical Apparatus for Explosive Gas Atmospheres - Part 3.Increased Safety “e”
GB 3836.4 Electrical Apparatus for Explosive Atmospheres- Part 4.Intrinsically Safe Circuits
and Electrical Apparatus “i”
GB 3836.5 Electrical Apparatus for Explosive Gas Atmosphere - Part 5.Pressurized Enclosures
“p”
GB 3836.6 Electrical Apparatus for Explosive Gas Atmosphere - Part 6.Oil-immersion “o”
GB 3836.7 Electrical Apparatus for Explosive Gas Atmosphere - Part 7.Power Filling “q”
GB 3836.8 Electrical Apparatus for Explosive Gas Atmospheres - Part 8.Type of Protection “n”
GB 3836.9 Electrical Apparatus for Explosive Gas Atmospheres - Part 9.Encapsulation “m”
GB 4351.1 Portable Fire Extinguishers - Part 1.Performance and Construction
GB 5226.1 Electrical Safety of Machinery - Electrical Equipment of Machines - Part 1.General
Requirements
GB/T 6921 Determination of the Concentration of Airborne Particulate Matters
GB/T 7679.1 Mining Machinery Terminology - Part 1.Mining Equipment
GB/T 8196 Safety of Machinery - Guards - General Requirements for the Design and
Construction of Fixed and Movable Guards
GB/T 10095.1 Cylindrical Gears - System of Accuracy - Part 1.Definitions and Allowable
Values of Deviations Relevant to Corresponding Flanks of Gear Teeth
GB/T 10095.2 Cylindrical Gears - System of Accuracy - Part 2.Definitions and Allowable
Values of Deviations Relevant to Radial Composite Deviations and Runout Information
GB/T 13306 Plates
GB/T 13325 Noise Emitted by Machinery and Equipment - Guidelines for the Preparation of
Test Codes of Engineering Grade Requiring Noise Measurements at the Operator’s or
Bystander’s Position
GB/T 13344 Downhole Drill Hammers and Bits
GB/T 13384 General Specifications for Packing of Mechanical and Electrical Product
GB/T 15706.2 Safety of Machinery - Basic Concepts, General Principles for Design - Part 2.
Technical Principles
GB 16754 Safety of Machinery - Emergency Stop - Principles for Design
GB/T 16855.1 Safety of Machinery - Safety-related Parts of Control Systems - Part 1.General
Principles for Design
JB/T 1604 Code of Designations for Mining Machinery Products
JB/T 3249 Engineering Machinery Fender and Hood
JB/T 7161 General Specification of Heat-treatment for Rock Drilling Machines and Pneumatic
Tools
JB/T 7164 Rock Drilling Machines and Pneumatic Tools - General Specifications for Machined
Parts
JB/T 7165 Rock Drilling Machines and Pneumatic Tools - General Specifications for Assembly
danger.
5.2 Basic Safety Requirements for Situations without Driver’s Cab
5.2.1 The control mechanisms shall have plates indicating their actions.
5.2.2 The operator’s operating position setting shall comply with ergonomic principles.
5.2.3 The control platform shall be set up in a location that is convenient for observation.
5.2.4 Under working conditions, when the ambient noise in the operator’s control area is greater
than 85 dB(A), a noise reduction device (earplugs or headset) shall be provided.
5.2.5 Under working conditions, when there are splashing objects in the control area or when
the dust concentration is excessively high, the operator shall wear a helmet and dust mask.
5.3 General Safety Requirements
5.3.1 All slewing and moving parts, except for the drill rod, propulsion mechanism and
traveling mechanism, shall be equipped with protective measures if they are dangerous to the
operator. Any dangerous areas or components, such as. transmission, high temperature, circuits
and fragile parts, that may be touched by the operator shall be isolated with protective devices
(such as. protective covers and protective plates, etc.). The design of the product protective
devices shall comply with the requirements of GB/T 8196.
5.3.2 The rated pressure of pipes, hoses and pipe joints shall be not less than the design pressure
of the system. The hoses shall be pressure-resistant, oil-resistant, wear-resistant and flexible,
and shall be free from damage and aging, etc. Short and complete hoses shall be used as much
as possible, and the hoses shall be marked with the allowable working pressure. Hoses or pipes
near the driver’s operating position shall be equipped with protective guards in accordance with
the requirements of JB/T 3249, so as to prevent the pipes or hoses from bursting and injuring
the operator.
5.3.3 The energy source of the drilling rig shall be independent, and each independent
component shall have a device for disconnecting from the energy source. This type of devices
shall be clearly marked. If re-connection may endanger those around them, they shall be able
to be locked. After the drilling rig cuts off the energy source, it shall be able to safely release
the energy left or stored in the circuit, so that there is no danger to people around it. Certain
circuits may remain connected to the energy source in order to clamp workpieces, store
information and provide internal lighting. Under this circumstance, special measures shall be
taken to protect the safety of the operator.
5.3.4 If there is a risk of contact with hot or cold surfaces, these surfaces shall be equipped with
guardrails or covers. The design of sharp edges, corners and protruding parts shall comply with
the requirements of GB/T 15706.2.
5.3.5 The design of the handle shall make it easy for the operator to control the entire machine,
and shall ensure that it does not cause injuries, for example, hand pinching, when used.
5.3.6 Various pipeline valves shall be properly sealed, flexibly opened, and shall not leak after
closing. Various pipe joints, including the air inlet (oil, water) joints and threaded connections
of the machine itself, shall adopt reliable anti-loosening and anti-leakage structures.
5.3.7 The internal combustion rock drills used for operations in underground mines, tunnels and
other places shall be able to ensure that their emissions, dust and explosion protection
respectively comply with relevant national regulations.
5.3.8 The insulation of electric rock drills shall comply with the regulations of GB 755.If used
in explosive gas environments, they must also comply with the stipulations of GB 3836.1 ~
3836.2.
5.3.9 The layout of various gas and hydraulic pipelines shall be convenient for installation,
inspection and maintenance, and they shall be bundled into a bundle during the design.
5.3.10 The safety design of the control system shall comply with the stipulations of GB/T
16855.1.
5.3.11 The mechanism for connecting and unloading the drill rod mechanism shall be safe and
reliable. If the drill rod is manually connected and unloaded, the operating procedures must be
strictly followed.
5.3.12 On the operating mechanism of the drilling rig, there shall be plates indicating their
actions.
5.3.13 The driving and working positions shall have good visibility to ensure that there is no
danger to personnel.
5.3.14 When the drilling rig is traveling, operating or stops on a slope with a specified angle, it
shall ensure reliable braking and flexible turning, and there shall be no shaking, slipping or loss
of control.
5.3.15 Self-propelled drilling rigs shall be equipped with traveling braking system, auxiliary
braking system and parking braking system.
5.3.16 The hydraulic system of the drilling rig shall be equipped with a pressure relief device
and a pressure safety valve. If an adjustable hydraulic valve is used, then, it shall have an anti-
loosening device. Both the hydraulic system and pneumatic device shall be equipped with
pressure monitoring devices.
5.3.17 After adjusting the position of the drill frame, it shall be ensured that the top tip is firmly
supported, and the screws and nuts are re-tightened.
5.3.18 Drilling rigs equipped with air compressors, engines and motors must have suitable
portable fire extinguishers. In addition, within the safe period for use, the quality shall comply
with the requirements of GB 4351.1.
6.2 Traveling Part Requirements and Climbing Capability
6.2.1 The self-propelled drilling rig shall smoothly travel, flexibly turn and reliably brake.
6.2.2 The braking distance shall not be greater than 300 mm.
6.2.3 When traveling, the deviation distance shall not be greater than 700 mm every 20 m.
6.2.4 The traveling speed shall not be less than 1 km/h but not greater than 5 km/h (the specific
traveling speed of each type of drilling rigs shall be provided in the design).
6.2.5 The climbing capability shall be greater than 14.
6.3 Reduction Box
6.3.1 The manufacturing accuracy of gears shall not be lower than the requirements of Level 8
in GB/T 10095.1 ~ 10095.2.
6.3.2 The temperature rise shall not be greater than 30 C.
6.3.3 The sealing shall be good.
6.4 Slewing Mechanism
6.4.1 The manufacturing accuracy of gears of the slewing mechanism cannot be lower than the
requirements of Level 8 in GB/T 10095.1 ~ 10095.2.
6.4.2 After assembly, the slewing reducer must undergo a 30-min no-load test in the forward
and reverse directions. The temperature rise shall not exceed 30 C and there shall be no
abnormal noise.
6.4.3 The cleanliness value of the slewing reducer shall not be greater than 960 mg.
6.4.4 After the slewing mechanism operates 5 times in the entire stroke on the carriage, it shall
flexibly and smoothly move, without crawling or blocking. In addition, it shall be located in the
center of the drill frame, and the eccentricity shall be less than 1 mm.
6.5 The gas and water pipeline systems shall be correctly installed, properly sealed, and free of
air and water leaks.
6.6 Hydraulic System
6.6.1 The hydraulic system shall have no oil leakage and shall have protective devices to
prevent dust and other impurities from entering.
6.6.2 Each assembly of each hose shall be connected in accordance with the system drawing,
and no twisting or folding is allowed during assembly.
6.6.3 The cleanliness of the hydraulic system. the impurity content in every 100 g of hydraulic
oil shall not exceed 10 mg.
6.6.4 The 6 h movement of the piston rod of the support arm hydraulic cylinder shall not be
greater than 4 mm.
6.7 Electrical System
6.7.1 The electrical system shall be free of poor contacts, errors and electric leakage.
6.7.2 The mechanical support of the electrical device shall be able to eliminate or buffer the
acting forces during movement.
6.7.3 On drilling rigs powered by an external power supply, a cable entry device shall be
installed.
6.7.4 The grid voltage used by the drilling rig shall comply with the stipulations of GB/T 156.
6.7.5 The motor shall have protective measures against rain, moisture, dust and electric leakage.
6.8 Control Mechanisms
The control board in the driver’s cab shall be equipped with control instruments for drilling rig
operation. Each control system shall be correctly installed and operated, and be flexibly, safely
and reliably used.
6.9 Propulsion Mechanism
6.9.1 For the propulsion mechanism of the drilling rig, one propulsion stroke shall comply with
the design requirements of the drilling rig.
6.9.2 The propulsion force of the propulsion mechanism shall comply with the design
requirements of the drilling rig.
6.10 The drilling rig shall have a flexible, reliable and accuracy device for connecting and
unloading the drill rod.
6.11 The assembly of the drilling machinery shall comply with the provisions of Article 3 in
JB/T 7165.
6.12 The machining of all parts of the drilling machinery (except for the specific dimensions
and tolerances provided in the drawings) shall comply with the provisions of JB/T 7164.
6.13 The heat treatment of the parts of the drilling machinery shall comply with the stipulations
of JB/T 7161.
6.14 The quality of welding parts of the drilling machinery shall comply with the stipulations
of JB/T 7167.
6.15 Paint
7.2.4.2 Raise the pressure of the hydraulic system to 1.5 times the rated pressure (when the
rated pressure is less than or equal to 16 MPa) or 1.25 times the rated pressure (when the rated
pressure is greater than 16 MPa); maintain the pressure for 20 minutes.
7.2.5 Cleanliness inspection of slewing reduction box
Drain the oil in the tank, filter it, then, pour the gasoline into the tank, use a brush to clean all
parts, and drain out the cleaning gasoline. Use a sieve mesh with a basic mesh size of 0.075 mm
(200 mesh) to filter it, dry the filtered dirt, together with the sieve, in a drying box (at a
temperature of 120 C, for a duration of 1 hour). Then, cool it in a desiccant for 20 minutes and
weigh it.
7.2.6 Cleanliness of hydraulic system
Drain the oil from the tank and filter it. Use a sieve mesh with basic mesh size of 0.075 mm
(200 mesh) to filter it, dry the filtered dirt, together with the sieve, in a drying box (at a
temperature of 120 C, for a duration of 1 hour). Then, cool it in a desiccant for 20 minutes and
weigh it.
7.2.7 Place the drill arm and propeller flat, move the rock drill to the frontmost end of the
propeller, after parking for 6 hours, check the change in the length of the arm cylinder piston
rod.
7.2.8 Propulsion test
Use an electronic dynamometer to carry out the test, without installing the drill rod and impactor,
when the drill frame is vertical to the horizontal plane.
7.2.9 Brake reliability test
On a specified slope, the braking distance when driving uphill or downhill.
7.2.10 Complete-machine reliability test
7.2.10.1 The cumulative trouble-free operation time of the complete machine shall not be less
than 100 hours. The reliability test may be combined with the production test or separately
conducted.
7.2.10.2 For complete machines that undergo the reliability test in conjunction with the
production test, calculate based on the cumulative time of the production test of 100 hours,
general adjustments and maintenance are allowed during this period, and the cumulative time
shall not exceed 2 hours.
7.2.10.3 During the test, no malfunction shall occur, and the cumulative time for adjustments
and minor repairs shall not exceed 1 hour.
8 Inspection Rules
8.1 Exit-factory Inspection
8.1.1 The exit-factory inspection items are.
a) Electrical system;
b) Hydraulic system;
c) Air circuit system;
d) Mechanical transmission system;
e) Complete machine performance.
8.1.2 Each drilling rig must be inspected one by one at the manufacturer. Only by passing the
inspection can it be allowed to exit the factory. In addition, it shall be accompanied by
documents proving the conformance of quality.
8.2 Type Inspection
8.2.1 Type inspection is a comprehensive inspection, which is conducted every 3 years during
normal production. Under one of the following circumstances, type inspection shall be
conducted.
a) During trial production and appraisal of new products (or transfer of old products to
another factory for production);
b) When there are significant changes in structure, process or materials used;
c) When production resumes after a long period of suspension;
d) When the relevant national departments propose a request for type inspection.
8.2.2 Products for type inspection shall be randomly selected from the products that have passed
the exit-factory inspection, and the sampling size shall be one set.
8.3 Determination Rules
8.3.1 During exit-factory inspection, if there are no more than 3 minor defects in appearance
quality that do not affect the overall appearance, the product can be determined as qualified;
products with disqualified assembly quality and performance can be allowed to exit the factory
after repairs.
8.3.2 During type inspection, if there are disqualified performance parameters that are still
disqualified after re-inspection, then, the product shall be determined as disqualified.
...... Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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