GB 50270-2010 English PDF

GB 50270-2010: Code for construction and acceptance of conveyor equipment installation engineering
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GB 50270-2010
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50270-2010
Code for Construction and Acceptance of Conveyor
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
1 General Provisions ... 7
2 Basic Requirement ... 8
3 Belt Conveyor ... 12
4 Slat Conveyor Equipment ... 16
4.1 Slat Conveyer ... 16
4.2 Light-duty Slat Feeder ... 16
4.3 Middle-duty Slat Feeder ... 17
4.4 Heavy-duty Slat Feeder ... 18
4.5 Test Run ... 19
5 Vertical Bucket Elevator ... 20
6 Screw Conveyor ... 25
7 Roller Conveyor ... 26
8 Overhead Conveyer ... 28
9 Vibrating Conveyor ... 32
10 En-masse Conveyer ... 33
11 Pneumatic Conveyor ... 36
12 Mine Hoist and Winch ... 37
12.1 Winding Mine Hoist and Winch ... 37
12.2 Multi-rope Hoist ... 41
12.3 Other Winches ... 43
12.4 Test Run ... 43
13 Acceptance ... 48
Appendix A Belt Connecting Method for Belt Conveyor ... 49
Explanation of Wording in This Code ... 52
List of Quoted Standards ... 53
1 General Provisions
1.0.1 This code is developed in order to improve the construction level of the conveyor
equipment installation engineering, promote the technological progress, ensure the engineering
quality and safety and improve the economic performance.
1.0.2 This code applies to the construction and acceptance of the installation engineering of
belt conveyor, slat conveyor equipment, vertical bucket elevator, screw conveyor, roller
conveyor, overhead conveyor, vibrating conveyor, en-masse conveyer, pneumatic conveyor as
well as mine hoist and winch.
1.0.3 In addition to this code, the construction and acceptance of conveyor equipment
installation engineering still shall be in accordance with those specified in the current relevant
national standards.
4 Slat Conveyor Equipment
4.1 Slat Conveyer
4.1.1 The assembling of frame shall meet the following provisions:
1 The deviation in the horizontal positions of the center line of frame and the longitudinal
center line of conveyor shall not be larger than 2mm.
2 The straightness deviation of the center line of frame shall not be larger than 1/1000.
3 The difference in the length of these two diagonal lines of the cross section of frame
shall not be larger than 1‰ of the average length of these two diagonal lines or 10mm.
4 The deviation in the verticality of the frame to the building floor shall not be larger
than 2/1000.
4.1.2 The assembling of guide tracks shall meet the following provisions:
1 The deviation in the horizontal positions of longitudinal center line between guide
tracks and the longitudinal center line of conveyor shall not be larger than 1mm.
2 The permissible deviation of the track gauge is ±2mm.
3 The joints of guide tracks shall be flat and smooth, their displacement towards right
or left shall not be larger than 0.2mm, and the difference of their height shall not be larger
than 1mm.
4 The gap at joint shall not be larger than 2mm.
5 The guide surface shall be smooth and its verticality deviation shall not be larger
than 10/1000.
4.1.3 The assembling the tension apparatus of cast car type conveyor shall meet the
following provisions:
1 The joint of the traveling rail with the trapped rail shall be flat and smooth, their
offset towards right or left shall not be larger than 1mm, and the difference of height shall not
be larger than 0.3mm.
2 The joint of the traveling guide track with the trapped guide track shall be flat and
smooth, their displacement towards right or left shall not be larger than 0.2mm, and the
difference of height shall not be larger than 1mm.
3 The sliding block of tension apparatus shall match with the slide track well, and their
local gap shall not be larger than 1mm.
4.2 Light-duty Slat Feeder
4.2.1 The deviation in the longitudinal straightness of the main beam of frame shall not be
larger than 1/1000; the difference in the diagonal lines of the frame shall not be larger than
8 Overhead Conveyer
8.0.1 The assembling of metal member shall meet the following provisions:
1 The verticality deviation of the hanger or upright column shall not be larger than
1/1000.
2 The levelness deviation of cantilever shall not be larger than 3/1000.
3 The deviation in the vertical and lateral levelness of the platform shall not be larger
than 3/1000.
4 The offset of the longitudinal center line at the supporting point of track to the
longitudinal center line of conveyor shall not be larger than 3mm.
8.0.2 When laying the track for universal overhead conveyors, the following provisions
shall be met:
1 The straightness deviation of the track within the straight segment shall not be larger
than 3mm within any length of 6000mm and shall not be larger than 7mm within the full
length.
2 The distortion of track within the straight segment shall not be larger 1% of the orbit
altitude within any length of 6000mm.
3 The distortion of vertical curved track shall not be larger than 2% of the orbit
altitude.
4 The distortion of horizontal curved track shall not be larger than 1.5% of the orbit
altitude.
5 The height difference and transverse misalignment of the seating face at joint of track
shall not be larger than 0.5mm.
8.0.3 When laying the track for power and free overhead conveyors, the following
provisions shall be met:
1 The straightness deviation of single straight track shall not be larger than 1.5mm
within any length of 1000mm and shall not be larger than 5mm within the full length.
2 The deviation in the degree of symmetry between the center line of traction rail and
the center line of bearing rail shall not be larger than 1mm.
3 The distortion of straight track, horizontal curved track and vertical curved track at
their both end faces shall not be larger than 1.3% of the orbit altitude.
4 The height difference and transverse misalignment of the seating face at joint of track
shall not be larger than 0.5mm, and the gap at the joint shall not be larger than 1mm.
8.0.4 When laying the track for enclosed-track power and free overhead conveyors, the
following provisions shall be met:
1 The straightness deviation of track shall not be larger than 2.5mm within any length
of 1000mm and shall not be larger than 6mm within any length of 6000mm.
2 The deviation in the degree of symmetry between the center line of traction rail and
the center line of bearing rail shall not be larger than 1mm.
3 The deviation in height of the wheel tread at outlet and inlet of curved track shall not
be larger than 3m.
8.0.5 When laying the track for overhead electrical monorail conveyors, the following
provisions shall be met:
1 The straightness deviation of track shall not be larger than 0.8/1000 and shall not be
larger than 30mm.
2 The verticality deviation of track shall not be larger than 1% of the orbit altitude.
3 The distortion of track in straight segment shall not be larger than 0.5% of the orbit
altitude within any length of 3000mm.
4 The distortion of curved track shall not be larger than 1.5% of the orbit altitude.
5 The misalignment of track at the joint shall not be larger than 1mm and the gap at the
joint shall not be larger than 2mm.
8.0.6 When laying the track for enclosed-track overhead conveyors, the following provisions
shall be met:
1 The straightness deviation of track shall not be larger than 2mm within any length of
1000mm and shall not be larger than 5mm within any length of 6000mm.
2 The distortion of straight track shall not be larger than 1mm within any length of
1000mm and shall not be larger than 3mm within any length of 6000mm.
8.0.7 The assembling of turning device shall meet the following provisions:
1 The permissible deviation for the planeness of the bottom surface of horizontal
curved track within 1000mm shall be ±2mm.
2 The sprocket, smooth wheel and rollers’ group of turning device shall be able to
rotate flexibly without blocking or jamming.
3 The permissible deviation for the distance between the transverse central plane of
sprocket and the bottom surface of track shall be －1.5mm ~ 0.
4 The deviation in the distance between the axial line of sprocket and the longitudinal
center line of track shall not be larger than 1mm.
5 The deviation in the distance between the outer edge of rollers on roller turning
device and the center line of track shall not be larger than 1mm.
8.0.8 The assembling of track switch shall meet the following provisions:
1 The track switch tongue shall be able to rotate flexibly to the right position without
dropping process and shall not be larger than 5mm within the whole travel.
4 The top of drop section shall be firmly connected with the roof truss or truss, the live
rail shall be without shaking, blocking, sliding or loosening phenomenon during the hoisting
and dropping process.
5 The verticality deviation of these two guide tracks of the lifting gear shall not be
larger than 1‰ of the height of guide track.
8.0.12 The deviation in the distance between the guide plate of suspension device and the
center line or surface of track shall not be larger than 2mm; the guide surface shall be flat and
smooth, and the arched parts shall be uniform and smooth.
8.0.13 The assembling of catcher, stopper and brake shall be in accordance with those
specified in the accompanying technical documents.
8.0.14 The no-load test run shall meet the following provisions:
1 The barring or crawling distance shall not be less than 30m, the pull chain shall mesh
with the driving pusher dog well, and the operating pull chain shall be free from blocking and
abnormal noise.
2 The conveyor shall be crawled in advance for at least three times, the running time
shall be lengthened gradually, and the conveyor shall operate stably after running for 2h
continuously without abnormal conditions.
3 The action of emergency parking brake, suspension chain safety catcher and drop
section stop block shall be sensitive, correct and reliable.
8.0.15 The load test run shall meet the following provisions:
1 During the load test run, the conveyor shall be operated for 1h respectively at 1/3, 1/2,
1 and 1.25 times of the rated load.
2 The conveyor shall operate stably without blocking or making abnormal noise.
3 The structure shall be free from obvious deformation and the connection shall be
firm without looseness.
9 Vibrating Conveyor
9.0.1 The assembling of conveyor shall meet the following provisions:
1 The straightness deviation of conveying chute shall not be larger than 3mm within
any length of 1000mm, and the transverse levelness shall not be larger than 1/1000.
2 The flanged connection of conveying chute shall be tight and firm, the misalignment
at the part contacting with material shall not be larger than 0.5mm.
3 The joining parts at material inlet and outlet shall not generate any constrained
vibration.
4 After assembling the supporting spring, its static deformation amount shall not be
larger than 1/10 of the rated amplitude; the installation angle of driving device shall be
consistent with the angle in vibration direction, and the permissible deviation for the phasing
degree of driving device shall be ±1°.
5 The binding bolt shall be installed with black blocking device.
9.0.2 The no-load test run shall meet the following provisions:
1 The conveyor shall be started stably and rapidly with steady vibration but no
horizontal hunting, jumping, impacting or abnormal noise.
2 The deviation in amplitude, vibration direction angle and vibration frequency shall
not be larger than 10% of the rated values; for the vibrating conveyor in length over 15m, the
amplitude deviation of its front, middle and tail sections shall not be larger than 10% of the
rated amplitude.
3 The temperature rise of rubber spring shall not exceed 50℃, the temperature rise of
metal spring shall not exceed 70℃; the temperature rise of the shaft bearing of eccentric-rod
vibrating conveyor and that of motor shall not exceed 50℃; and the temperature rise of
magnet coil shall not exceed 65℃.
9.0.3 The load test run shall meet the following provisions:
1 The fall of amplitude shall not be larger than 10% of the rated amplitude.
2 The materials shall be conveyed fluently in the conveying chute without obvious
blocking, misalignment, swirling or severe material leaping.
12 Mine Hoist and Winch
12.1 Winding Mine Hoist and Winch
12.1.1 When locating the main shaft device, its position shall meet the following provisions:
1 The deviation in the horizontal position of axial line of main shaft shall not be larger
than 0.5‰ of the horizontal distance between the axial line of main shaft and the hoisting
center line of shaft case or the axial line of hoisting sheave.
2 The elevation deviation of the axial line of main shaft shall not be larger than 50mm.
3 The position deviation of the hoisting center line shall not be larger than 5mm.
4 The deviation in the verticality of the axial line of main shaft with the hoisting center
line shall not be larger than 0.15/1000.
12.1.2 The device for main shaft shall be assembled according to the stamps of the maker.
12.1.3 The installation levelness of the bearing seat shall be detected by setting level meter
along the direction of main shaft, the reading of this level meter shall not be larger than
0.1/1000; another level meter shall be set in a direction perpendicular to the direction of main
shaft, and its reading shall not be larger than 0.15/1000; the bearing seat shall be installed by
closely contacting with the bearing beam, and no filling piece can be padded between them.
12.1.4 The bearing bush shall contact the bearing seat well.
12.1.5 The installation levelness of the main shaft of winding drum shall be detected with
level meter, the reading of this level meter...