This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of wheels for wheeled engineering machinery. JB/T 7155-1993 Technical requirements for wheels for wheeled engineering machinery JB/T7155-1993 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/T7155-93
Wheeled Engineering Machinery Wheels
Technical Conditions
Issued on November 21, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on March 1, 1994
Machinery Industry Standard of the People's Republic of China
Wheeled Engineering Machinery Wheels
Technical Conditions
1 Subject content and scope of application
JB/T7155-93
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of wheeled engineering machinery wheels (hereinafter referred to as wheels).
This standard applies to wheels of wheeled engineering machinery. 2 Reference standards
GB2828
GB2883
GB2933
GB9769
JB/T5943
JB/T5946
JB/T7154
3 Technical requirements
Technical conditions for high-quality carbon structural steel
Carbon structural steel
Batch inspection counting sampling procedures and sampling tables (applicable to inspection of continuous batches) (Check) Engineering machinery and industrial vehicle rim specification series wheels and wheel vehicle terms, codes, signs and measurement units rim profile detection
General technical conditions for engineering machinery welding parts
General technical conditions for engineering machinery painting
Wheeled engineering machinery wheels steel, technical conditions 3.1 The wheels shall comply with the requirements of this standard and be manufactured according to the product drawings and technical documents approved by the prescribed procedures 3.2 The wheel code consists of the rim nominal width code/wheel flange code, rim structure type code, rim nominal diameter code and rim profile type code. The meaning of the code is as specified in GB2933. 3.2.1 Marking method
Rim and wheel sector type
Nominal wheel diameter
Sheath structure type
Flange codewww.bzxz.net
Rim width
3.2.2 Marking example
Approved by the Ministry of Machinery Industry on November 21, 1993
Implementation on March 1, 1994
JB/T 715593
Wheel with rim width of 19.50, rim height of 2.5, multi-piece structure, nominal diameter of 25, and wheel rate type of full bevel bottom + marking:
Wheel 19.50/2.5-25 (TB)
3.3 The wheel mark should be stamped in a conspicuous position on the exposed part of the rim after the tire is installed. 3.4 The wheel rim’s profile shape, dimensions, limit deviation and inspection circumference, valve hole dimensions and position, and tire round seat knurling shall comply with the provisions of GB2883.
3.5 The mechanical properties of the wheel materials shall not be lower than that of 50 steel, except for the lock ring, and the mechanical properties of the rest of the wheel materials shall not be lower than that of Q235 steel. The chemical composition and mechanical properties shall comply with the provisions of GB699 and GB700 respectively. 3.6 The thickness reduction of the wheel rim after rolling shall not exceed 15% of the actual thickness of the pressed sheet, and cracks are not allowed.
3.7 Radial runout of the wheel rim seat and axial runout of the wheel flange: 3mm when the wheel rim nominal diameter is less than or equal to 406.4mm; 4mm when the wheel rim nominal diameter is greater than 406.4mm and less than or equal to 635mm; 5mm when the wheel rim nominal diameter is greater than 635mm3.8 The minimum number of cycles of the wheel bending fatigue test shall comply with the provisions of the following table. Table Minimum number of cycles of the wheel bending fatigue test Wheel type
DC.WFB.SDC
3.9 The wheel weld shall comply with the provisions of JB/T5943. Wheel nominal diameter code
8,9,15
Any diameter
3.10 When the sections of the wheel body are welded, the staggered parts of the steel plates shall have a smooth transition, and flash and burrs are not allowed. 3.11 The outer circular weld height of the rim body shall not be greater than 1mm, and the other weld heights shall not be greater than 1.5mm. The lock ring and lock groove are made of rolled steel, which shall comply with the provisions of JB/T7154. 3.124
After the elastic test of the lock ring, the permanent deformation of the opening part shall be: 3.134
When the lock ring diameter is less than or equal to 406.4mm, it shall not be greater than 2mm; when the lock ring diameter is greater than 406.4mm and less than or equal to 635mm, it shall not be greater than 3mm; when the lock ring diameter is greater than 635mm, it shall not be greater than 5mm. The flatness tolerance of the locking ring and retaining ring is 3mm
Minimum number of cycles
45×10
90×10*
36×10
When the locking ring is put on the inspection cylinder, the distance between them shall not be greater than 2mm, and shall be evenly reduced to both sides over an arc length of not less than 1/4 of the circumference. The roundness tolerance of the retaining ring is 3mm.
The radius R of the bead seat of the wheel rim and the tire shall be smooth and flat, without burrs or bubbles. No burrs are allowed around the valve hole.
Flatness tolerance of the wheel mounting surface:
When the rim calibrated diameter is less than or equal to 406.4mm, it is 0.4mm; when the wheel calibrated diameter is greater than 406.4mm, it is 0.6mm. 3.20 The position tolerance of the spoke mounting surface is 1mm. 3.21 Position tolerance of spoke bolt holes: 0.4mm when the rim nominal diameter is less than or equal to 406.4mm; 0.6mm when the rim nominal diameter is greater than 406.4mm. 3.22 Tubeless wheels shall not have air leakage after the sealing test. 3.23 The wheels shall be coated with anti-rust primer first and then with topcoat. The coating shall comply with the requirements of JB/T5946. The color of the topcoat can be agreed with the user. 2
JB/T 715593
3.24 After the wheel is installed on the main engine, the wheel body shall not be damaged under normal use. The lock pattern can be replaced with the tire. 4 Test method
4.1 Visual inspection shall be used to inspect the surface quality of the wheel and the appearance quality of the weld key. 4.2 Inspection of wheel profile and geometric dimensions
4.2.1 Inspection of the rim nominal diameter and wheel copper parameters shall be carried out according to the measuring tools and inspection methods specified in GB9769. 4.2.2 Use a radial comprehensive runout meter or a dial indicator to detect the radial runout of the wheel and the axial runout of the rim end face. 4.2.3 Use a thickness gauge to detect the reduction of the wheel rim after rolling. 4.2.4 Use a steel ruler, tape measure, etc. to detect the general geometric dimensions of the wheel. 4.2.5 Use a position gauge or a self-made measuring instrument to detect the position of the wheel bolt hole. 4.3 The elasticity test of the lock ring should be carried out in a free state by pulling the two ends of the lock ring open radially apart for a certain distance, and then continuously for 10 times. When the lock ring diameter is less than 508mm, pull it apart by 50~70mm. When the lock ring diameter is equal to or greater than 508mm, pull it apart by 70~90mm. 4.4 The bending fatigue strength test of the wheel is carried out on the wheel bending fatigue test bench. 4.5 For the sealing test of the tubeless wheel, the tire should be installed on the rim, inflated to a pressure slightly greater than the rated pressure, and then placed at room temperature for 72 hours, and checked with a tire pressure gauge.
Inspection rules
5.1 The finished product shall be inspected by the quality inspection department of the manufacturer according to the drawings, relevant documents and this standard, and the inspection certificate shall be issued before it can be shipped out of the factory. The surface quality, rim shape, circumference and bolt hole position of the wheel shall be fully inspected, and the remaining items may be inspected by sampling. 5. 2
5.3 The wheel sampling inspection rules shall be carried out in accordance with the provisions of GB2828. This standard selects the following schemes: a.
Batch, with 100 wheels produced as a batch: Inspection level, general level 1;
Qualified quality level, AQL=10
Strictness of oil sampling scheme, normal inspection, transfer rules can be used: Pumping scheme type, one-time sampling scheme is adopted. 5.4 When there are special requirements for acceptance rules, it shall be agreed by the user and the manufacturer. Marking, packaging, transportation and storage
The wheels should be marked in obvious places:
Manufacturer name or trademark:
Product name:
Wheel mark:
Inspection mark:
Manufacturing date or production number.
6.2 Wheels are usually packed with straw ropes, and the number of ties should not be less than 3. If the user agrees to simplify the packaging, it should also be ensured that it will not be damaged during normal transportation.
6.3 When the wheels are transported, there should be no serious silicon bumps and scratches on the surface. 6.4 Products that have passed the inspection should be stored in a place without corrosive media, ventilated, dry and rainproof. 6.5 Products shipped out of the factory must be accompanied by a product quality inspection certificate. 7 Quality guarantee period
If the user complies with the storage regulations and normal use conditions, the wheel shall be repaired or replaced free of charge for the user if the product is damaged or cannot work normally due to poor manufacturing quality within 1 year from the date of delivery (based on the date of the delivery invoice) and the use time does not exceed 2000 hours.
Additional instructions:
JB/T7155-93
This standard was proposed and coordinated by the Tianjin Engineering Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Tianjin Engineering Machinery Research Institute, Liuzhou Steel Ring Factory, Chengdu Engineering Machinery Steel Ring Factory, Mengyin Engineering Machinery Steel Ring Factory and the Wheel Branch of Jiangxi Automobile Manufacturing Plant. The main drafters of this standard are Xu Xiangshan, Huang Ping, Xiao Taixiao, Xu Keying and Li Tie.
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