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JB/T 10247-2016Open-pit crawler down-the-hole drills (English PDF)

履带式露天潜孔钻机

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

April 5, 2016

Implementation date

September 1, 2016

Scope

JB/T 10247-2016 is the English-translated version of 履带式露天潜孔钻机.

Compressed-air powered crawler drills used in open-pit work are covered by JB/T 10247-2016. The standard fixes the basic parameters, technical requirements, inspection methods and inspection rules, and the provisions for marking, packaging, transportation and storage of open-pit crawler type downhole drills.

It applies to such drills powered by compressed air, referred to as the products. The standard replaces JB/T 10247-2001; it was issued on 5 April 2016 and implemented on 1 September 2016.

Issued by the Ministry of Industry and Information Technology, it is a Chinese machinery industry standard filed under number 55134-2016.

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Document preview — JB/T 10247-2016

National Standard of the People's Republic of China

Replacing: JB/T 10247-2001

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword3
1 Scope4
2 Normative References4
3 Basic Parameters5
4 Technical Requirements6
5 Inspection Methods7
5.1 Inspection Conditions7
5.2 Idle Running Test8
5.3 Chassis Function Test8
5.4 Climbing and Braking Test8
5.5 Drill Boom Function Test8
5.6 Propeller Function Test9
5.7 Sealing Performance Test10
5.8 Thread Tightening Torque Test10
5.9 Rock Drilling Test10
5.10 Weighing Test10
5.11 Product Safety Inspection10
6 Inspection Rules10
6.1 Exit-Factory Inspection10
6.2 Type Inspection11
6.3 Inspection Items and Quality Characteristic Categories of the Product11
6.4 Sampling12
6.5 Sampling Rules12
7 Marking, Packaging, Transportation and Storage12
7.1 Marking12
7.2 Packaging and Transportation13
7.3 Storage13

Foreword

This Standard was drafted in accordance with the rules provided in GB/T 1.1-2009.

This Standard serves as a replacement of JB/T 10247-2001 Open-Pit Crawler Type Downhole Drills. In comparison with JB/T 10247-2001, the main technical changes are as follows.

--- The Table of Contents is added;

--- The Normative References are updated;

--- The abolished JB 8684 is deleted (see Chapter 2 of Version 2004);

--- GB 17957-2005 is added to serve as a replacement of JB 8684;

--- The drilling diameter (mm) in Table 1 is adjusted from ">=80" to "80~203", the drilling depth (m) is adjusted from ">=20" to ">=25", and the idling speed of the slewing device (r/min) is adjusted from ">=50" to "0~150";

--- The schematic diagram of outline structure and the schematic diagram of the projection measurement method of the drill boom swing angle in 5.5 are added;

--- Chapter 6 is modified and supplemented.

1 Scope

This Standard specifies the basic parameters, technical requirements, inspection methods, inspection rules, marking, packaging, transportation and storage of open-pit crawler type downhole drills.

This Standard is applicable to the open-pit crawler type downhole drills powered by compressed air (hereinafter referred to as products).

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 5621 Test Methods of Performance for Rock Drilling Machines and Pneumatic Tools

GB/T 5898-2004 Measurement of Noise Emitted by Rock Drilling Machines and Pneumatic Tools - Engineering Method

GB/T 13306-2011 Plates

GB/T 13344-2010 Downhole Drill Hammers and Bits

GB/T 13916-2013 Unnoted Tolerance of Shape and Position for Stamping Parts

GB 17957-2005 Rock Drilling Machines and Pneumatic Tools - Safety Requirements

JB/T 1590 Type Organization Method for Rock Drilling Machines and Pneumatic Tools

JB/T 3576 General Specifications for Rust-Preventing of Rock-Drilling Machines and Pneumatic Tools

JB/T 4385.1-1999 General Specifications for Open Die Forgings on Hammer

JB/T 5000.4-2007 Heavy Mechanical General Techniques and Standards - Part 4: Iron Casting

JB/T 5000.6-2007 Heavy Mechanical General Techniques and Standards - Part 6: Steel Castings

JB/T 7161 General Specification of Heat-Treatment for Rock Drilling Machines and Pneumatic Tools

4 Technical Requirements

4.5 The quality of steel die forgings shall comply with the provisions of JB/T 7163.

4.6 The quality of free die forgings shall comply with the provisions of JB/T 4385.1-1999.

4.7 The unnoted tolerance dimensions of stamping parts shall comply with the provisions of GB/T 13916-2013.

4.8 The quality of machined parts shall comply with the provisions of JB/T 7164.

4.9 The quality of heat-treated parts shall comply with the provisions of JB/T 7161.

4.10 The quality of welding parts shall comply with the provisions of JB/T 7167.

4.11 The assembly quality of the product shall comply with the provisions of JB/T 7165.

4.12 There shall be no leakage at the connection parts or thread seals of hydraulic and pneumatic parts.

4.13 Each hose shall be connected according to the system diagram, and no twisting or folding shall occur.

4.14 The tightening torque of fasteners shall comply with the provisions of QC/T 518-2013.

4.15 The tightening torque of threads shall comply with the provisions of JB/T 7165.

4.16 The painting quality of the product shall comply with the provisions of JB/T 9857.

4.17 The rust-preventing quality of the product shall comply with the provisions of JB/T 3576.

4.18 The matching downhole drill hammer and bit shall comply with the provisions of GB/T 13344-2010.

4.19 The safety requirements of the product shall comply with the provisions of GB 17957-2005.

4.20 The quality of iron castings shall comply with the provisions of JB/T 5000.4-2007.

5 Inspection Methods

5.6.4 When the propeller is in a vertical state, the propeller is swung left and right with the aid of the propeller swing cylinder. Use an inclinometer or a weight and an angle gauge to detect its swing angle, and move the positioning pin to detect the swing angle of the propeller when the swing cylinder is fixed in two holes.

5.6.5 The propeller pitches with the aid of the pitch cylinder, and its pitch angle is detected with an inclinometer or a weight and an angle gauge.

5.1 Inspection Conditions

5.1.1 The instruments and meters used for measurement shall have verification certificates within the validity period and meet the measurement accuracy requirements. Check and calibrate the meters before the test.

5.1.2 The ambient temperature is 0°C~40°C, the relative humidity is below 80%, and the altitude does not exceed 1,500 m.

5.1.3 The travel test shall be carried out on a flat, dry, and well-adhesive dirt road, with a length of not less than 20 m.

5.1.4 The climbing test shall be carried out on a flat, solid earth ramp or gravel clay ramp, with a slope of not less than the specified value and a length of not less than 10 m.

5.2 Idle Running Test

Connect the air source and check that all connections shall meet the requirements and there shall be no wrong installation or missing installation; start the travel motor to carry out forward, backward, and turning tests, check that the travel shall be normal and the travel direction shall be consistent with the operating direction; start the hydraulic pump and run it idle for about 10 min, and check whether the operating direction of the pressure valve handle and the multi-way valve handle is consistent with their movement direction; the pressure reducing valve shall function properly and be able to adjust the pressure to the measurement range specified in Table 1.

5.3 Chassis Function Test

5.3.1 The product is running normally, and its travel speed is measured with a tape measure and a stopwatch.

5.3.2 Fix one end of a tensioner with an effective range, connect the other end to the product with a wire rope, and measure its traction while the product is running.

5.3.3 When the propeller is in a vertical state, the chassis of the product pitches with the aid of the leveling cylinder, and the crawler leveling angle is detected with an inclinometer or a weight and an angle gauge.

5.4 Climbing and Braking Test

The product travels on the specified slope for a distance of not less than 5 m; while measuring the gradability, the product moves downward and brakes suddenly, and the sliding distance is measured with a tape measure. Repeat three times and take the average value.

5.5 Drill Boom Function Test

The drill boom shall be stable when performing various actions and can be braked at any position. At the same time, it shall meet the following requirements.

--- The drill boom pitches with the aid of the arm cylinder, and its pitch angle is detected with an inclinometer or a weight and an angle gauge;

--- Adjust the drill boom to an appropriate angle, put the propeller in a horizontal position, hang a weight on the front and rear ends of the drill boom, and enable the drill boom to swing with the aid of the swing cylinder. Draw a fan-shaped surface diagram of the left and right extreme positions of the drill boom on the ground, as

5.7 Sealing Performance Test

During the whole process of testing, observe at any time that there shall be no leakage at the joint surfaces and pipe joints of the gas and liquid systems; after 15 minutes of static pressure maintenance, there shall be no obvious leakage at the joints; move the center of gravity of the propeller to the front end, extend the arm cylinder to the maximum, and the retraction of the piston rod in 4 h shall be less than 3 mm.

5.8 Thread Tightening Torque Test

Use a torque wrench to spot check the tightening torque of fasteners and pipe joints at key parts of the product.

5.9 Rock Drilling Test

The gas consumption for rock drilling of the product shall be tested in accordance with the provisions of GB/T 5621. The noise shall be tested in accordance with the provisions of GB/T 5898-2004.

5.10 Weighing Test

The overall unit weight of the product is measured by weighing method.

5.11 Product Safety Inspection

The product safety inspection shall be carried out in accordance with the provisions of GB 17957-2005.

6 Inspection Rules

6.1 Exit-Factory Inspection

The products shall be inspected item by item before leaving the factory. The inspection items include product assembly quality and appearance quality as well as the provisions of 5.2 to 5.9. All performance and quality indicators shall comply with the provisions of Table 1 as well as 4.14 and 4.15. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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Normative references

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Editions of JB/T 10247

Edition	Title	Revision	Status
JB/T 10247-2016	Open-pit crawler down-the-hole drills	current edition	Current
JB/T 10247-2001	Open-pit crawler down-the-hole drills	previous edition	Superseded

This page sells the current edition, JB/T 10247-2016. Earlier editions are listed for reference only.

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