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Mechanical Industry Standard of the People's Republic of China
JB/T5498—91
Bottom-dumping Mine Car
Published on 1991-07-10
Published by the Ministry of Machinery and Electronics Industry of the People's Republic of China
Implemented on 1992-07-01
Mechanical Industry Standard of the People's Republic of China
Bottom-dumping Mine Car
Subject Content and Scope of Application
JB/T5498—91
This standard specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of bottom-dumping (including bottom side-dumping) mine cars (hereinafter referred to as mine cars). This standard applies to mine cars used in coal, metallurgy and other mines. Cited standards
GB1958
GB4695
GB4786.1~4786.5
GB5622
3Product classification
Technical conditions for high-quality carbon structural steel
Shape and position tolerance detection regulations
Basic parameters and dimensions of bottom-dumping mine cars for metal minesBasic parameters and dimensions of bottom-dumping narrow-gauge locomotives and rolling stockWheel tread shape and dimensions of narrow-gauge rolling stock for minesOpen wheelset
General technical conditions for narrow-gauge mine cars
Product label
3.1 Mine cars are divided into bottom-dumping type and bottom-side-dumping type according to the structural form; and into overlapping type and non-lapping type according to the overlapping method. 3.2 The basic parameters and dimensions of mine cars shall comply with the provisions of the following table. Volumetric loading
MDC-3.3/6
MDCC-3.3/6
MDC-5.5/9
MDCC-5.5/6
YDC-2/7bZxz.net
YDC-4/7
YDCC-4/7
YDC-5/7
YDCC-6/ 7
YDC-6/9
YDCC-6/9
Device Contest
Machine Approved by the Ministry of Machinery and Electronics Industry on July 10, 1991. Overall dimensions
(3680)
(5050)
￥800
Traction height
Traction force
Implemented on July 1, 1992
Note: ①Height H and traction height are calculated from the surface ②Teaching weight is based on the density of loose materials; p=0.9t/ml for coal mines,
p=2.5t/m for metal mines;
③The dimensions in brackets are for lapped mine cars.
④*800 is the wheelbase of the bogie itself.
3.3Product model
3.4Product marking example
JB/T 5498--91
6 means 600mm
7 means 762mm
9~ means 900mm
Volume, m
Vehicle code
Bottom side unloading C
Bottom unloading
Mining code
M--coal mine car
Y-metallurgical mining car
Volume is 3.3m2, track gauge is 600mm, bottom side unloading mine car for coal mine, mine car MDCC-3.3/6JB/T5498-91
4 Technical requirements
4.1 Mine cars shall comply with the requirements of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. 4.2 All materials of parts and components must have a certificate of conformity from the supplier, otherwise they must be identified and can only be used after they are qualified. 4.3 The manufacturing quality of the mine car shall comply with the relevant provisions of GB5622. 4.4 The shape and size of the wheel tread of the mine car shall comply with the provisions of GB4695. The open wheel of the mine car shall comply with the provisions of GB4786.1~4786.5. 4.5
The plane of the bottom door should be flat, and its flatness shall not exceed 2mm per square meter, and the maximum shall not exceed 3mm. All assembly parts must be qualified products, and purchased parts and outsourced parts must have a certificate of qualification before assembly. After assembly, the bottom door and the car box should be well combined, and the local gap shall not exceed 5mm. 4.9
After assembly, each hinge should rotate flexibly, and the coaxiality of each set of rotating shaft holes on the frame and bottom door shall not exceed 2mm. 4.10
The unloading wheel should rotate flexibly without stringing.
Before painting the parts of the mine car, burrs, rust, welding residues and other dirt must be removed. The paint appearance is uniform, bright, firmly attached, and there shall be no obvious defects such as brush marks, accumulation, flow marks, etc. The traction round link chain shall be subjected to overload static tension and breaking tension tests. When the test static tension is twice the rated traction force, the deformation shall not exceed 2% of the total length; the breaking tension shall not be less than 6 times the rated traction force. 4.14 The mechanical properties of the pin shall not be lower than the provisions of 45 steel in GB699. 4.15 The difference between the two diagonals of the car box: the volume of the mine car is less than 4m, the difference is not more than 8mm; the volume is equal to or greater than 4m, the difference is not more than 12mm.
4.16 The deviation of the overall dimensions of the assembled mine car: the total width and traction height of the mine car with a car box volume less than or equal to 4m is ±5mm, the total height is ±8mm, and the total length is ±10mm; the total width and traction height of the mine car with a car box volume greater than 4m2 is ±8mm, the total height is ±10mm, and the total length is ±15mm.
4.17 After the frame is manufactured, the center plane of the frame traction device should be symmetrical to the longitudinal center plane of the chassis, and the symmetry tolerance is: no more than 6mm for a mine car with a car box volume less than 4m, and no more than 10mm for a mine car with a car box volume equal to or greater than 4m. 2
JB/T5498—91
4.18 When the assembled mine car is placed on a horizontal track, no gap between any wheel and the rail surface shall be greater than 2mm. 4.19 The service life of the mine car shall not be less than 5 years, and the first overhaul period shall be 2 years. 4.20 If the user complies with the rules for the use of the mine car, within 6 months from the date of arrival, if the mine car is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall provide free repair or replacement. 5 Test method
5.1 The newly trial-produced and first-batch production mine cars must be tested on the unloading test bench. The mine car placed on the test bench is pushed (pulled) by external force through the unloading test bench three times. When the bottom door of the car reaches the lowest point, the unloading angle is measured. Each rotating part should be flexible and reliable. 5.2 According to GB1958, the coaxiality of each group of slewing shaft holes on the frame and bottom door should comply with the provisions of Article 4.9 of this standard. 5.3 Push the mine car onto the horizontal track and check the track contact status of the four wheels. The 2mm plug gauge cannot be inserted at the wheel-rail contact point (the part with gap).
5.4 Check the wheel tread with the wheel tread sample made according to GB4695. 5.5 On the circumference of the wheel tread, take three points (evenly distributed) to measure the hardness, which should comply with the provisions of Article 2.3 of GB4786.2. 5.6 Use a steel ruler to touch the plane of the bottom door, select three points in different directions, and use a plug gauge to check the gap between the bottom door plane and the steel ruler. It should comply with the provisions of Article 4.6 of this standard.
5.7 Use a steel tape measure to measure the lengths of the two diagonals of the car box opening respectively. The difference should comply with the provisions of Article 4.15 of this standard. 5.8 After the frame is manufactured, draw the center lines of the frame traction device and the bottom frame respectively, and use a steel ruler to measure the difference between the two center lines. It should comply with the provisions of Article 4.17 of this standard.
6 Inspection rules
3% of each batch of traction round chain shall be sampled for overload static tensile test, and the number of random inspections shall not be less than three. The test results shall comply with the provisions of 6.14
of Article 4.13. The deformation of the product under the overload test shall not exceed 2% of the round link chain. If one link fails, the test shall be repeated with double load. If another link fails, the test shall be repeated one by one. If the breaking load test is still unqualified after doubling, the entire batch shall be scrapped. 6.2 The inspection of mine cars is divided into factory inspection and type inspection. 6.3 Factory inspection
6.3.1 Each mine car must be inspected and qualified by the factory inspection department, and a certificate of conformity shall be issued before it can be put into storage. 6.3.2 Factory inspection items: overall dimensions, connection quality, weld quality, appearance quality and flexibility of each rotating part. 6.4 Type inspection
6.4.1 Type inspection shall be carried out for mine cars in any of the following situations: a.
Preliminary type identification of new products or old products transferred to the factory for production; after formal production, if there are major changes in structure, materials, and processes, which may affect product performance; b.
Under normal production conditions, periodic inspection shall be carried out every three years; when the product is resumed after a long-term suspension of production (more than two years); d.
When the factory inspection results are significantly different from the last type inspection; when the national quality supervision agency proposes a requirement for type inspection. Type inspection includes all the contents specified in this standard. When conducting type inspection, the number of mine cars inspected in each batch shall not be less than two, and no less than three tests shall be carried out on the unloading test bench. 6.4.3
7 Marking, packaging, transportation, storage
Each mine car shall be fixed with a product label in a conspicuous position, and its type and size shall comply with the provisions of JB8, and shall indicate: 7.1
Product name and model;
Main technical parameters;
Manufacturer name and date of manufacture;
Factory number.
JB/T5498—91
7.2Each batch of mine cars submitted to the user shall be accompanied by the following documents: a.
Operation manual (including detailed list of wearing parts); product certificate of conformity.
7.3Mine cars are generally not packaged, but they shall be packaged if required by the user. 7.4Mine cars shall be placed stably and fixed reliably during transportation to prevent damage by silicon collision. 7.5
Protective measures shall be taken for the storage of mine cars. If the storage time is long (more than two years), the rubber and lubricating grease shall be checked and replaced if necessary. Additional Notes:
This standard was proposed and managed by Luoyang Mining Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by Jilin Mining Machinery Factory and Shijiazhuang Mining Machinery Research Institute. The main drafters of this standard were Lv Rongwei and Ya Jinlai. People's Republic of China
Mechanical Industry Standard
Bottom Dump Car
JB/T 5498-91
Published and distributed by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry (P.O. Box 8144, Beijing
Direct Postal Code 100081)
Copyright reserved
Reproduction prohibited
Printed by Qinghe County Printing Factory, Hebei Province
Format 880×1230
Sheet 1/2
First edition in August 1991
Word count 8000
First printing in August 1991
Print run 00.001-1000
Price 0.80 yuan
No. 0234
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