JB/T 5323-1991 Technical conditions for welded steel structure shelves in three-dimensional warehouses
Some standard content:
J83 | | tt | | JB | tt||Published on 1991-07-03
Published by the Ministry of Mechanical and Electronics Industry of the People's Republic of China
Implemented on 1992-07-01
Press Machinery Industry Standard of the People's Republic of China
Three-dimensional warehouse welded steel structure shelves
Technical conditions
1 Subject content and scope of application
JB/T5323—91
This standard specifies the rail tunnel type high-rise shelves Basic requirements for the manufacturing, installation and acceptance of welded steel structure shelves in warehouses. This standard is applicable to steel structure shelves with a unit load capacity of no more than 2t and welded shelves. 2 Reference standards
GB700
GB985
GB 986
GB1231
GB1300
GB 1591
GB3633||tt ||GB5117bZxz.net
GB5118
GB8110
GB8923
GE 9286
GB205
ZBJ83015
JB8||tt| |3Technical Requirements
3.1 Materials
Carbon Structural Steel
Basic forms and dimensions of gas welding, manual arc welding and gas shielded welding seam grooves Submerged arc welding seam grooves Basic form and size Technical conditions for high-strength large hexagonal head bolts, large hexagonal head nuts and washers for steel structures Steel wire for welding
Technical conditions for low-alloy structural steel
High-strength torsion-shear type for steel structures Bolt connection sub-technical conditions
Carbon steel bars
Low alloy steel welding rods
Welding wire for carbon dioxide gas shielded welding
Steel surface corrosion grade and rust removal grade before painting Cross-hatch test of spicy, clear and spicy films
Steel structure engineering construction and acceptance specifications
Track tunnel type high-rise shelf warehouse design specifications product signage
3.1.1 Main shelves The load-bearing structural parts should be Q235 steel in GE700 or 16Mn steel in GB1591. For shelf structures where the ambient temperature is equal to or lower than -20°C, Q235-D grade steel must be used, and 16Mn steel should have a qualification guarantee of -40°C Charpy impact test.
3.1.2 The depth of corrosion, pitting or scratches on the steel surface shall not be greater than half the negative deviation of the thickness of the steel, and there shall be no delamination defects at the fracture.
3.1.3 Welding rods
3.1.3.1 The welding rods used for manual welding should comply with the regulations of GB5117 and GB5118, and the selected welding rod model should be compatible with the strength of the main metal.
3.1.3.2 The welding wire used for automatic and semi-automatic welding should comply with the regulations of GB1300. The selected welding wire and flux should be consistent with the main metal. Approved by the Ministry of Machinery and Electronics Industry on 1991-07-03 and implemented on 1992-07-01|| tt||1
Adapt.
JB/T 5323—91
3.1.3.3 Welding wire for carbon dioxide gas shielded welding shall comply with the regulations of GB8110. 3.1.4 High-strength bolts should comply with the regulations of GB1231 or GB3633. 3.2 Production
3.2.1 Similar measuring instruments used in shelf production, installation and quality inspection should have the same accuracy. It shall not be used for component measurement without verification by the metrology department.
3.2.2 The steel parts of the rack components should be corrected before cutting. The corrected steel surface should not have obvious concavities or damage. Heating correction is allowed, but the heating temperature is strictly prohibited from exceeding the normalizing temperature (900°C). 3.2.3 Component blanking should strictly ensure blanking accuracy and neat cuts to ensure the quality of welding and installation. 3.2.4 After the components are cut out, the straightness of the steel should be checked piece by piece, and the straightness should not be greater than 1000㎡L (L is the cutting length).
3.2.5 The shelf pieces and support rods should be made of tire molds. All bolt holes must be drilled on the tire molds. Expanding the holes during installation is not allowed. There shall be at least two connecting bolts for supporting rods at each end. 3.2.6 The shelf columns are allowed to be manufactured in extended lengths, and their strength shall not be lower than the strength of the original components. The position of the joints shall not affect the arrangement of the shelf web bars, cargo corbels, and connecting plates. The straightness after welding shall meet the requirements of Article 3.2.4. 3.2.7 Component welding
3.2.7.1 The weld groove shall comply with the regulations of GB985 and GB986. 3.2.7.2 The welding wave on the surface of the weld metal should be uniform, and there should be no defects such as cracks, slag inclusions, welding nodules, burn-throughs, arc craters, and needle-shaped pores. There should be no spatter in the welding area.
3.2.7.3 No pores are allowed on the surface of the weld. The undercut depth shall not exceed 0.5mm, and the cumulative total length shall not exceed 10% of the weld length. 3.2.7.4 The limit deviations of external dimensions of butt welds and fillet welds shall comply with the relevant provisions of GBJ205. 3.2.8 The accuracy of each component of the shelf piece after welding should meet the following requirements: the total height of the shelf piece (L), the limit deviation is 2mm (see Figure 1) a.
h.
width of the shelf piece ( D), the limit deviation is ±2mm (see Figure 1); the height dimension of each corbel joist (L1nL2nLinL2n'), the limit deviation is ±2mm (see Figure 1); c
d
shelf base plate The height difference (α) limit deviation is ±0.5mm (see Figure 2): the height dimensions (H, H) of each connecting plate, the limit deviation is ±2mm (see Figure 2) e.
1 The internal and external bending deviation (,f,) of the side of the shelf piece and the column should be less than or equal to 100 (L is the full height of the shelf piece), but the total height limit deviation is not greater than 6mm (see Figure 3)
g. The verticality (f) between the shelf column and the bottom plate shall not be greater than 0.5mm within the 500mm height range (see Figure 3). 3.2.S Rust removal and painting
3.2.9.1 The rust removal and priming work of the rack components shall be carried out only after the quality inspection department has passed the production quality inspection. 3.2.9.2 Before painting, the steel should undergo surface rust removal treatment in accordance with the provisions of GB8923. The treated steel surface should meet the requirements of St2 level.
3.2.9.3 The time from rust removal to primer application on the steel surface shall not exceed 6 hours. There should be no rust or contamination on the painted surface before painting. 3.2.9.4 The ambient temperature during painting should be between 5 and 38°C, and the relative humidity should not be greater than 85%. It is not suitable to work on rainy days or when there is condensation on the surface of the components. Keep away from rain within 4 hours after application. 3.2.9.5 Surface decorative coating should be carried out after the shelf installation and commissioning is completed. The coating surface should be uniform, bright and consistent in color, and no blistering, peeling, cracking, sagging, wrinkles, foreign impurities and other obvious contaminants that reduce protection and decoration are allowed. 3.2.9.6 The adhesion of the paint film should not be lower than the level 2 requirements of GB9286. 2
S
JB/T 5323—91
Figure 1
Figure 2
3
3.3 Overall installation requirements for shelves|| tt||f3
JB/T5323—91
fa
Figure 3
Before the shelves leave the factory, some units should be pre-assembled in the factory. f2
Before the shelf is installed, the basic condition, embedded parts or pre-drilled holes should be tested. Only after the test is qualified can the overall shelf installation be carried out. 3.3.1 Floor
3.3.1.1 The shelf floor is flat The degree should comply with the provisions of Article 7.1 of ZBJ83015. 3.3.1.2 Shelves installed with expansion anchor bolts should be drilled according to the design requirements. Each hole should be accurately located on its specified axis and the distance should be guaranteed, and the error should not be greater than 2mm. 3.3.1.3 For shelves installed with adjustable steel pallets, the elevation dimensions of each steel pallet should be measured. The upper surfaces of all steel pallets shall be located on the same datum plane, and their height deviation shall not be greater than ±1 mm. 3.3.2 Running track
3.3.2.1 The vertical bending limit deviation of the running track shall comply with the provisions of Table 1. Table
Measurement length m
National length
Stacker wheel base length
Within 0.1 on both sides of the track joint
3.3.2.2 Running track The horizontal bending limit deviation shall comply with the provisions of Table 2. 4
Limit deviation
±3.0
±1.5
0.5
mm
Measurement length
100||tt ||>100
m
Stacker horizontal guide wheel track
0 on both sides of the track joint.Within the 05 range
JB/T5323—91
Table 2
3.3.3 The horizontal bending limit deviation of the guide rail should comply with the provisions of Table 3. Table 3
Measurement length
100
>100
Guide rail fixed distance ≥ 2
m
0.1 range on both sides of the track joint Within the function
Limit deviation
±2.0
±3.0
±0.5
o.
Extreme resistance deviation
±3.0
±4.0
±2.0
0.5
3.3.4 The distance between the running track and the guide rail, the limit deviation is ±10mm (see Figure 4). e
e
Figure 4
e
B
3.3.5 The horizontal misalignment between the running track and the guide is f≤5mm (see Figure 4). The verticality and b of the shelf sheet along the length and width of the tunnel should comply with the provisions of Table 4 (see Figure 4). 3. 3. 6
Table 4
Control mode
Manual
Automatic
Full height of shelf piece
12||tt | |12
full height
m
mm
mm
a and b
10
15||tt | |10
E
The height deviation e of the cargo joists or beams on the same floor of the shelf should comply with the requirements of Table 5 (see Figure 4). The height of the joist or crossbeam on the same layer on one side of the stacker should not be lower than the other side, and the height difference should be ≤ 4 mm. 5
Control mode
Hand
Motion
Auto
Motion
JB/T 5323—-91
Table 5 ||tt || e | | tt | | mm | Center distance (A), the limit deviation is ±2mm (see Figure 4). 3.3.9 In the width direction of the roadway, the allowable deviation of B1 and B2 dimensions based on the track centerline is ±2mm (see Figure 4). 3.3.10 The misalignment of shelves in the same row in the same lane should not be greater than 5mm. Inspection rules
4
4.1 Component inspection
4.1.1 Rack components must comply with the material, structure, size and processing accuracy requirements specified in this standard and drawings. It can only leave the factory after being inspected by the quality management department.
4.1.2 Inspection of shelf pieces
4.1.2.1 Shelf pieces shall be inspected by secondary sampling method. Random sampling method is adopted for sampling, and the number of samples to be inspected shall be as specified in Table 6. Table 6
Number of shelf pieces
100
101200
201~300
301--400
401~500||tt ||Number of pieces for the first random inspection
23
27
32
36
60
Number of pieces for the second random inspection| |tt||23
28
48
69
90
Total number of unqualified pieces allowed
2||tt ||2
3
4
6
Definition of unqualified products: Those who fail one of the test items specified on the shelf sheet are judged to be unqualified . Electricity
b. If there are no unqualified products after the first sampling inspection (for 401~500 pieces, the number of unqualified products shall not exceed 1 piece), there is no need for a second random inspection and the entire batch of products will be judged as qualified.
If the number of unqualified pieces after the first soft random inspection exceeds the allowed total number of unqualified pieces, a second random inspection must be conducted. After the second random inspection C.
, if the total number of unqualified pieces does not exceed the allowed total number of unqualified pieces, the entire batch of products will be judged to be qualified. d. If the number of unqualified pieces after the first random inspection or after the second random inspection exceeds the allowed total number of unqualified pieces, the entire batch of products will be judged as unqualified products.
4.1.2.2 Users should negotiate with the manufacturer on how to accept shelf sheets. 4.1.2.3 Shelf piece factory testing items
blood.
b.
d.
e.
g.
h.
1
Full height of shelf piece,
Width of shelf piece,
Height of each corbel joist,
Height of each connecting plate:
Height difference of shelf bottom plate:
Side side of shelf piece and Internal and external bending of the column:
Perpendicularity between the shelf column and the bottom plate:
Position size of each bolt hole:
Weld quality.
Shelf overall installation inspection
4.2
Shelf overall installation inspection items:
6
.
h.
c
d+
P.
.
Running track installation accuracy:
Guide rail installation accuracy;
Shelf joists on the same floor or Crossbeam height deviation, verticality deviation of shelf pieces,
Center distance deviation at the bottom of adjacent shelf column columns JB/T5323—91
Dimensional deviation of BB2 based on the track center line: the same shelf in the same row Chip dislocation deviation:
B.
h.
Oil quality.
4.3 Testing Methods
Please refer to Appendix A (Supplement) for the testing methods of shelf pieces and overall shelf installation. 5 Marking, Packaging, Transportation and Storage
5.1 Marking
Manufacturers must fix metal product signs at appropriate locations on the shelves. The location of the sign must be obvious. The type and size should comply with the regulations of JB8 and should include the following content:
a.
Shelf height, m
Number of goods:
b.||tt ||Cargo compartment size m
E.
Rated load capacity of unit cargo space, t
d.
Manufacturer name,
e.| |tt||f, date of release.
5.2 Packaging and transportation
Shelves must have special fixed brackets and packaging. The shelf pieces should be placed sideways in the bracket grid, fixed and bundled, and the lifting points should be clearly marked to facilitate lifting and loading.
During the lifting process, the shelf pieces are not allowed to collide and deform. 5.3 Storage
Shelves should be stored in an environment free from rain, sunlight and corrosive gases, and the storage ground should be dry, flat and solid. Shelf pieces must be placed sideways, one cotton at a time, and re-selection and stacking are not allowed. JB/T5323-91
Appendix A
Testing method for welded steel structure shelves in three-dimensional warehouses (supplement)
This method is applicable to the welded steel structures of rail tunnel-type high-rise shelf warehouses Inspection of shelves. The detection method stipulated in this method is a unified detection method, which does not restrict each manufacturer from using more advanced and complete detection methods and detection tools during self-pickup. A7 General Provisions
A1.1 Testing instruments and measuring tools must be certified by the metrology department before they can be used. The accuracy of the instruments and measuring tools used for manufacturing accuracy testing and overall installation accuracy testing should be consistent.
A1.2 The allowable error of the indication value of various measuring tools for testing shall not be greater than the specified value in Table A1. Table A1
Measuring tool name
Allowable error
Steel ruler (steel ruler)
0.5mm
During testing, the temperature of the measuring tool and the temperature of the inspected part should be basically consistent. A1.32
A1.4 When measuring the shelf piece, the shelf piece should be placed horizontally on the platform. A2 shelf sheet manufacturing accuracy testing
A2.1 length testing
>10m
1mm
steel
foot
10m||tt || 0.5mm | The tensile force and measurement correction value of the steel tape measure are in accordance with Table A2. The length deviation is equal to the difference between the actual measured value plus the measurement correction value and the steel tape measurement correction value and the theoretical length.
Table A2
Length L
m
0
>10～17
A2.1.2 Shelf piece width||tt| |Tensile force
N
98
When testing, measure on both sides of the shelf piece. Steel tape measure section
10×0.25
tmm2
13×0.2
Correction value
No correction
2mm
A2.2 shelf plate height difference, When detecting the vertical deviation between the shelf column and the bottom plate, take the end face of the bottom plate as the benchmark and use a square ruler, ruler or feeler gauge to measure. A2.3 Detection of internal and external bending deviations on the side of the shelf piece and the column. Place the equal height brackets on the outside of both ends of the column of the shelf piece. Tighten them with $0.490.52mm steel wire, and then measure with a steel ruler. The maximum value of the difference between the measured value and the equal-height bracket is the internal and external bending deviation value of the side of the shelf piece and the column (see Figure A1). A2.4 Welding chain quality inspection
Weld quality mainly checks appearance defects and geometric dimensions. Appearance defects are detected by visual inspection, and all dimensions of the welds are detected using templates, rulers and calipers.
8
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