JB/T 9023.2-1999 English PDF (JB/T9023.2-1999)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click JB/T 9023.2-1999
Historical versions: JB/T 9023.2-1999
Preview True-PDF (Reload/Scroll if blank)

JB/T 9023.2-1999: KQJ series downhole drill
JB/T 9023.2-1999
JB
MACHINERY INDUSTRY STANDARD
OF THE PEOPLE'S REPUBLIC OF CHINA
ICS 73.100.30
D 92
Replacing ZB D92 002-88
KQJ series downhole drill
ISSUED ON. JUNE 28, 1999
IMPLEMENTED ON. JANUARY 1, 2000
Issued by. State Bureau of Machine-Building Industry
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Types and basic parameters... 4
4 Technical requirements... 5
5 Security requirements... 6
6 Test methods... 6
7 Inspection rules... 7
8 Marking, packaging, transportation and storage... 7
KQJ series downhole drill
1 Scope
This standard specifies the type, basic parameters, technical requirements, safety
requirements, test methods, inspection rules, marking, packaging, transportation and
storage of KQJ downhole drills.
This standard applies to non-self-propelled downhole drills (hereinafter referred to as
drills).
2 Normative references
The provisions contained in the following standards constitute the provisions of this
standard through reference. When this standard is published, the following versions are
valid. All standards will be revised, and parties using this standard shall explore the
possibility of using the latest versions of the following standards.
GB/T 4879-1985 Rustproof packaging
GB/T 6921-1986 Determination of the concentration of airborne particulate
matters
GB/T 10095-1988 Accuracy of involute cylindrical gears
GB/T 13384-1992 General specifications for packaging of mechanical and
electrical products
JB/T 1604-1998 Code of designations for mining machinery products
3 Types and basic parameters
3.1 The drill is a bracket-type perforating device that can be used for percussive rotary
drilling.
3.2 The indication method of drill models shall comply with the provisions of JB/T
1604.
4.4 The manufacturing accuracy of the slewing mechanism gears shall not be lower
than the provisions of 8GL specified in GB/T 10095.
4.5 After assembly, the slewing reducer shall be subjected to a 1-hour no-load test, and
its temperature rise shall not exceed 30 °C.
4.6 The cleanliness value of the slewing reducer shall not exceed 960 mg.
4.7 The service life of a drill shall be no less than 1900 hours before the first overhaul.
4.8 The service life of a drill shall not be less than 2.5 years in total under single-shift
conditions.
4.9 Completeness
a) Host;
b) Down-the-hole impactor;
c) Special tools;
d) Spare parts and accessories;
e) Random technical documents.
5 Security requirements
5.1 The noise at the driver's operating position shall not exceed 90 dB(A).
5.2 The dust content at the driver's operating position shall not exceed 2 mg/m3.
6 Test methods
6.1 Lifting force
Place the carriage horizontally on the ground and test it with an electronic dynamometer
without installing the drill rod and impactor. The value shall comply with the specified
value in Table 1 (tested under a pressure of 0.6 MPa).
6.2 Temperature rise of the slewing reducer
After the slewing reducer has been running for 1 hour, use a point thermometer to test
the bearing area.
6.3 Noise