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GB 50276-2010: Code for construction and acceptance of crushing and grinding equipment installation engineering
GB 50276-2010
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50276-2010
Code for Construction and Acceptance of Crushing and
Grinding Equipment Installation Engineering
ISSUED ON: MAY 31, 2010
IMPLEMENTED ON: DECEMBER 1, 2010
Issued by: Ministry of Housing and Urban-Rural Construction of the People’s
Republic of China;
General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China.
Table of Contents
Foreword ... 4
1 General Provisions ... 7
2 Basic Requirement ... 8
3 Jaw Crusher ... 10
4 Gyrator Crusher ... 12
5 Cone Crusher ... 14
6 Roll Crusher ... 18
7 Ring Hammer Crusher and Hammer Crusher ... 19
8 Impact Crusher ... 20
9 Ball Mill, Rod Mill, Tube Mill and Autogenous Mill ... 21
9.1 Main Bearing ... 21
9.2 Drum, End Cover and Toothed Ring ... 23
9.3 Liner and Partition Plate ... 24
9.4 Driving Device ... 25
10 Vibrating Mill... 26
11 Power Mill ... 27
12 Beater Wheel Mill ... 28
13 Test Run ... 29
14 Engineering Acceptance ... 33
Explanation of Wording in this Code ... 34
List of Quoted Standards ... 35
1 General Provisions
1.0.1 This code is established in order to improve the construction level of crushing and
grinding equipment installation engineering, promote technological progress, ensure
engineering quality and safety and improve economic benefit.
1.0.2 This code is applicable to the construction and acceptance of crushing and grinding
equipment installation engineering for minerals, coal, fire retardant materials, building
materials, chemical materials, food, fodder and medicinal materials.
1.0.3 Except meeting this code, the construction and acceptance of crushing and grinding
equipment installation engineering shall also be in accordance with the provisions of current
relevant national standard.
6 Roll Crusher
6.0.1 The crosser laid on the foundation of roll crusher shall be in accordance with the
specification of engineering design or accompanying technical document.
6.0.2 The installation level of frame shall be inspected by longitudinally and transversely
placing level meter on frame, and shall not be larger than 0.20/1000.
6.0.3 When assembling sliding bearing, the bushing and spherical face tile shall be carried
out with re-scrape, and shall be in accordance with the following requirements:
1 The contact angle of bushing and journal should be 100°~120°;
2 For the contact point number on contact face, the brasses shall not be less than 3 and
the bearing metals tile shall not be less than 2 in each 25mm×25mm area;
3 The top gap between bushing and journal should be 1‰~1.5‰ of journal diameter; the
side gap should be 50%~70% of top gap;
4 The contact area of spherical face tile shall not be less than 60% of total area of
spherical face tile and shall be concentrated on middle position; the contact point number on
contact face shall not be less than 2 in each 25mm×25mm area.
6.0.4 The roller assembling shall meet the following requirements:
1 The gap between rolls shall not be larger than 5mm, and the gap difference shall not
be larger than 1mm;
2 The axial misalignment of two rolls shall not be larger than 3mm;
3 The parallel deviation of axis of movable roll and fixed roll shall not be larger than
0.20/1000, and the stress of spring at both sides shall be uniform.
6.0.5 When assembling gear roller, the cusp of roller shall collimate the tooth socket of
another roller.
6.0.6 After V belt wheel installation, the relative displacement of symmetrical plane of
wheel width shall not be larger than 2‰ of central distance, and the tightness degree of each
root V belt shall be consistent.
7 Ring Hammer Crusher and Hammer Crusher
7.0.1 For the installation level of machine base, the transverse shall not be larger than
0.10/1000, and the longitudinal shall not be larger than 0.50/1000.
7.0.2 The parallel deviation of rotor body for machine base and upper frame body joint
surface shall not be larger than 0.20/1000, and the installation level of major axis shall not be
larger than 0.10/1000.
7.0.3 The gap between hammerhead top of rotator and grid section and between grid
sections shall be in accordance with the specification of accompanying technical document.
During detection, the hammerhead shall be fixed on arm disc of rotator with wedge, the
movable arm of disc shall be in any position to make each hammerhead vertical with major
axis, after that, the gap between both shall be inspected.
7.0.4 When assembling sliding bearing, the bushing shall be carried out with re-scrape, and
the coordination of bushing and journal shall be in accordance with the following requirements:
1 The contact angle should be 80°~100°;
2 The contact point number on contact face shall not be less than 3 in each 25mm×
25mm area;
3 The side gap should be 1‰~1.2‰ of journal diameter;
4 The top gap shall be 1.5 times of side gap.
7.0.5 The hammerhead on rotator shall not be dismantled, if necessary, it shall be assembled
according to indicated mark by manufacturer.
7.0.6 The sealing of joint between upper and lower frames and joint between all door covers
and frame shall be tight without leak.
4 When the sleeve shaft diameter is larger than 2200mm, the sum of side gaps of both
sides should be 1.5 ‰~2‰ of journal diameter of sleeve shaft.
9.1.7 After journal metal and bearing seat assembling, the cooling water system shall be
tested with 0.5MPa water pressure, and the pressure shall be maintained with 10min, and then
without leakage.
9.1.8 The oil pipe channel of hydraulic oil of journal metal shall be tested with 32MPa oil
pressure after assembling; the pressure shall be maintained with 5min, and then without
leakage.
9.2 Drum, End Cover and Toothed Ring
9.2.1 The drum and end cover shall be inspected before assembling; the straightness deviation
of drum surface shall not be larger than 1 ‰ of total length of drum, and the roundness
deviation of both ends of drum shall not be larger than 1.5 ‰ of drum diameter.
9.2.2 When assembling drum and end cover, the joint surface shall be cleaned first, and then
coated with antirust and sealing material; the contact of joint surface shall be tight without
adding any adjusting gasket.
9.2.3 The drum and end cover shall be assembled according to mark, the alignment pin must
be fully loaded, and the bolts shall be uniformly tightened up after meeting assembling
requirements.
9.2.4 The assembling for two sleeve shafts shall be in accordance with the following
requirements:
1 The axial gap between shaft shoulder and main bearing of two sleeve shafts shall be
in accordance with the specification of accompanying technical document;
2 The relative elevation deviation of upper bus bar of two sleeve shafts shall not be
larger than 1mm; the installation level of two sleeve shafts shall be checked with level meter
and shall not be larger than 0.2/1000, and the feed end shall be higher than discharge end;
3 The axis of two sleeve shafts shall be on the same straight line; when indirectly
detecting end face of main bearing with indicator (Figure 9.2.4), the ending runout shall not
be larger than those specified in Table 9.2.4;
4 The contact requirements of two sleeve shafts with journal metal shall be in
accordance with those specified in Article 9.1.6 of this code.
9.2.5 The jogged toothed ring should be installed on drum after drum installed on main
bearing; the toothed ring asse...