JB/T 11270-2011 (JB/T 11270-2024 Newer Version) PDF English
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Assembled steel rack structure for high-bay warehouse. Technical requirements
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JB/T 11270-2011: PDF in English (JBT 11270-2011) JB/T 11270-2011
JB
INDUSTRY STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 53.080
J 83
Record No.. 34936-2012
Assembled steel rack structure for
high-bay warehouse - Technical requirements
ISSUED ON. DECEMBER 20, 2011
IMPLEMENTED ON. APRIL 01, 2012
Issued by. Ministry of Industry and Information Technology of the
People’s Republic of China
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Technical requirements ... 7
4.1 Rack structure for high-bay warehouse ... 7
4.2 Materials ... 8
4.3 Manufacture ... 8
4.4 Requirements for overall installation of racking ... 12
5 Test methods ... 17
5.1 General provisions ... 17
5.2 Testing on manufacture precision ... 17
5.3 Testing on the overall installation precision of racking ... 19
6 Inspection rules ... 21
6.1 Component inspection ... 21
6.2 Overall installation inspection of racking ... 22
7 Marking, packaging, transportation and storage ... 23
7.1 Marking ... 23
7.2 Packaging, transportation... 23
7.3 Storage ... 24
Foreword
This Standard is drafted in accordance with the rules given GB/T 1.1-2009.
This Standard is proposed by China Machinery Industry Federation.
This Standard is proposed by Technical Committee on Machinery Industry Logistics
Storage Equipment of Standardization Administration of China (CMIF/TC 10).
Responsible drafting organizations of this Standard. Beijing Materials Handling
Research Institute Co., Ltd., Jingxing Logistics Equipment Engineering Co., Ltd.
Participating drafting organizations of this Standard. Nanjing Inform Logistics
Equipment Engineering Co., Ltd., Shanghai Top Tiger Industrial Equipment Co., Ltd.
Main drafters of this Standard. Xu Qingcai, Li Hongliang, Yang Guanghui, Zhou
Xiaoxiao, Jin Yueyue, Zhu Xiuheng.
This Standard is issued for the first time.
Assembled steel rack structure for
high-bay warehouse - Technical requirements
1 Scope
This Standard specifies the technical requirements, test methods, testing rules,
markings, packaging, transportation and storage of assembled steel rack structure for
high-bay warehouse.
This Standard applies to the assembled rack for high-bay warehouse using
storage/retrieval machines to store and retrieve cargos through roadways, and the load
carrying capacity of unit location does not exceed 3 000 kg.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the dated edition cited applies. For undated
references, the latest edition of the referenced document (including all amendments)
applies.
GB/T 700-2006 Carbon structural steels
GB/T 1231 Specifications of high strength bolts with large hexagon head, large
hexagon nuts, plain washers for steel structures
GB/T 1591-2008 High strength low alloy structural steels
GB/T 3098.1-2010 Mechanical properties of fasteners - Bolts, screws and studs
GB/T 3632 Sets of torshear type high strength bolt hexagon nut and plain washer
for steel structures
GB/T 5117 Carbon steel covered electrodes
GB/T 5118 Low alloy steel covered electrodes
GB/T 8110 Welding electrodes and rods for gas shielding arc welding of carbon and
low alloy steel
GB/T 9286-1998 Paints and varnishes - Cross cut test for films
GB/T 10045 Carbon steel flux cored electrodes for arc welding
3.6
diagonal brace
Diagonal member installed in upright frames.
3.7
beam
Main component vertically connected to uprights, directly bearing the vertical load of
the cargos in the cell, generally arranged along the X-direction.
3.8
beam connector
Connector fixed to the end of beams, and connected to uprights.
3.9
horizontal bracing
Paired diagonal members horizontally arranged at every certain height, so as to
connect the adjacent upright frames together, in order to increase the overall rigidity of
the rack structure in the horizontal plane.
3.10
back bracing
Paired diagonal members arranged on the cell back of suitable location, so as to
connect the adjacent upright frames together, in order to increase the overall rigidity of
the rack structure in the vertical plane.
3.11
bracket
Overhang connector connected to uprights, with pallet rails installed at its end.
3.12
pallet rail
Rail connected to brackets, used to place pallets, along the storage/retrieval direction
of storage/retrieval machine folks.
3.13
4.2 Materials
4.2.1 Requirements for main material
4.2.1.1 The main load-bearing structure of racking shall be made of steel with the
mechanical properties not less than those of Q235 steel in GB/T 700-2006.
4.2.1.2 The rack structure for ambient temperature equal to or lower than -20 °C shall
be made of steel with the mechanical properties not less than those of 16Mn steel in
GB/T 1591 2008 or Q235-D grade steel in GB/T 700- 2006, and 16Mn steel shall have
qualification guarantee of -40 °C Charpy impact test.
4.2.2 Requirements for steel surface
The depth of rust, pitting or scratches on the steel surface shall not exceed half the
negative deviation of the steel thickness, and there shall be no delamination fault at
the fracture.
4.2.3 Requirements for bolts
4.2.3.1 High strength bolts for racking assembly shall comply with the provisions of
GB/T 1231, GB/T 3098.1-2010 (Class 8.8) or GB/T 3632.
4.2.3.2 Anchor bolts should use expansion anchor bolts or chemical bolts.
4.3 Manufacture
4.3.1 Requirements for upright punching
The upright punching spacing should be 50 mm, 75 mm and 100 mm.
4.3.2 Requirements for rolling
4.3.2.1 After the rolling of components, there shall be no cracks on the steel surface.
4.3.2.2 After the rolling of cross-type beams, the outer edge of the joint shall be tightly
closed.
4.3.3 Requirements for cutting of components
The cutting of components shall strictly guarantee the component precision and the
incision shall be neat; there shall be no flashes and burrs; the cross-section shall not
be significantly deformed.
4.3.4 Requirements for straightness of components
After the component is cut, its straightness is L/1 000 (L is the cutting length).
4.3.5 Manufacture of bolt holes
Measure at the joints of running rails, guide rails with a levelling ruler and feeler gauge.
5.3.4 Testing on the installation precision of running rails and guide rails
5.3.4.1 Distance between running rails and guide rails
Directly measure at the top tie of guide rails with a steel tape.
5.3.4.2 Horizontal dislocation
Measure at the top tie of guide rails by plumb bob method.
5.3.5 Testing on the height deviation of bracket pallet rails or beams in the same
level of the racking
Directly measure on the top of bracket pallet rails or beams with a levelling ruler and
feeler gauge.
5.3.6 Verticality deviation of upright frames
Measure at the highest point of upright frames by plumb bob method.
5.3.7 Testing on the deviation of the center-to-center distance at the bottom of
uprights of adjacent upright frames
Directly measure at the bottom of racking with steel tapes or rulers.
5.3.8 Testing on the deviation of the dimension of B1, B2 (see Figure 6) with the
center line of running rail as datum
Measure at the bottom of uprights of upright frames with rulers.
5.3.9 Testing on the deviation of the dislocation of upright frames in the same
ray and in the same roadway
Measure with squares, rulers, with the center line of the running rail as the datum.
5.3.10 Testing on surface spraying quality
5.3.10.1 Testing on appearance quality
The surface spray quality shall be tested by visual inspection method.
5.3.10.2 Testing on coating thickness
The surface coating thickness shall be tested by thickness gauges.
5.3.10.3 Testing on coating adhesion
6.1.2.2 The inspection it...
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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