Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T5508--91
ZSL type cold ore vibrating screen
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
ZSL type cold ore vibrating screen
Subject content and scope of application
JB/T5508-91
This standard specifies the product classification, technical requirements, test methods, inspection rules, and marking, packaging, transportation, and storage of the ZSL type cold ore vibrating screen.
This standard applies to cold ore vibrating screens (hereinafter referred to as vibrating screens) for screening cold sintered ore with a temperature below 150°C. Reference standards
JB4042
JB/ZQ4000.3
JB/ZQ4000.5
JB/ZQ4000.9
JB/ZQ4286
3 Product classification
3.1 Product type
Test method of vibrating screen
General technical requirements for welded parts
General technical requirements for castings
General technical conditions for assembly
General technical conditions for packaging
3.1.1 Vibrating screens can be manufactured into self-synchronous type and forced synchronous type. 3.1.2 Vibrating screens are all installed in a seat type, divided into left type or right type. Following the direction of material flow, the motor is located on the left side, which is called left type, and on the right side, which is called right type. 3.2 Basic parameters
The basic parameters should comply with the provisions of the following table.
ZSL2060
ZSL2575
ZSL2585
ZSL3090
Screen surface size
3.3 Product model
The product model is expressed as follows:
Screen hole size approved by the Ministry of Machinery and Electronics Industry on July 10, 1991
10×60
20×60
Vibration direction
Angle (\)
40°±5
Screen surface length, dm||t t||Screen width, dm
Vibrating screen
Number of vibrations
Screen inclination
Processing capacity
100~220
200~400
265~500
Electric motor
Machine weight
1992-07-01 implementation
4 Technical requirements
JB/T5508—91
4.1 Products shall comply with the provisions of this standard and be manufactured according to drawings and documents approved by the prescribed procedures. 4.2 Welded parts and castings shall comply with the provisions of JB/ZQ4000.3 and JB/ZQ4000.5 respectively. 4.3 Assembly shall comply with the provisions of JB/ZQ4000.9. 4.4 The structure of the vibrating screen shall ensure the following requirements: a. The trouble-free working time shall not be less than 7500h (excluding wearing parts); b. The service life shall not be less than 20000h (excluding wearing parts). 4.5 The service life of the main parts shall meet the following requirements: the screen plate shall not be less than 700h
the vibrator bearing shall not be less than 5000h;
the composite spring shall not be less than 8000h.
4.6 Under working conditions, the noise of no-load operation shall not exceed 90dB(A). 4.7 Screen box
4.7.1 After the cross beam is riveted, the upper surface of each beam shall be on the same surface, and the adjacent difference shall not be greater than 2mm. 4.7.2 The two diagonals of the screen frame shall be of equal length, and the tolerance for each meter of length shall be 1mm; the service life shall not be less than 20000h (based on the failure of the side plate). 4.8 The side plates shall not be spliced, and the flatness tolerance shall be 1mm per square meter. 4.9 Screen plate
The screen plate material is heat-resistant and wear-resistant alloy cast steel or rubber. 4.10 Vibration reduction system
4.10.1 The flatness tolerance of the vibration reduction frame is 2mm per square meter. 4.10.2 The two diagonals of the vibration reduction frame should be of equal length, and the tolerance per meter length is 1mm. 4.11 Assembly quality requirements
4.11.1 The amplitude difference between the symmetrical points of the two side plates shall not exceed 1mm. The lateral swing of the screen box shall not exceed 1mm.
Composite springs shall be selected in groups, with an equal height tolerance of 3mm and a stiffness limit deviation of ±5%. The following provisions shall be met when tightening and riveting
The surface of the riveted parts shall be smooth and flat, without flash, burrs, intermediate inclusions, etc.; after riveting, the rivets shall not be crooked or loose; if there are the above defects, they shall be removed and re-riveted. The vibrator should meet the following requirements:
After the eccentric block is assembled, the relative position should remain consistent. When measured at the far end of the center line, the relative position tolerance is 1mm; when the vibrator is assembled, all keyways should correspond to the same side; the vibrator rotates flexibly, and the rotation resistance of the two shafts feels basically the same; the maximum operating temperature of the bearing does not exceed 75℃. The synchronizer should meet the following requirements:
When assembling the four gears, the marking lines must be ensured to be on the same straight line, and the relative position tolerance is 2mm; by adjusting the gasket, the axial clearance of the bearing is ensured to be 0.1~0.15mm; the gear contact spot is 45% in the tooth height direction and more than 60% in the tooth length direction; d.
The cleanliness of the synchronizer does not exceed 800mg;
After the gearbox is assembled, it can be rotated flexibly by hand; e.
After the no-load test for more than 8h, the synchronizer should not have abnormal sounds. f.
After the vibration screen is assembled, it should be tested for 2h continuously. If any abnormal phenomenon is found, it should be stopped immediately and the fault should be eliminated. 4.11.7
4.12 Under the condition that the user complies with the storage, installation, maintenance and operation rules, if the product cannot work properly or is damaged due to poor manufacturing quality within 18 months from the date of shipment from the manufacturer and 12 months from the date of installation and use, the manufacturer shall repair and replace parts (but not including wearing parts) for the user free of charge.
5 Test method
5.1 The test shall comply with the provisions of JB4042.
JB/T5508--91
5.2 The noise is weighted by an ordinary sound level meter (A), which is set at 1m from the sound source and its height is on the horizontal plane formed by 1.5m from the ground. Three points are evenly distributed on each side to measure and take the average value. 6 Inspection rules
6.1 Factory inspection
6.1.1 The product is allowed to leave the factory only after the quality inspection department of the manufacturer has inspected it and it is qualified. 6.1.2 The factory acceptance test shall be carried out in the manufacturing plant, with continuous idling for no less than 2 hours. 6.1.3 Inspection items: Amplitude; Number of vibrations; Vibration direction angle; Noise, Maximum operating temperature of vibrator bearing; Amplitude difference between symmetrical points of two side plates; Lateral swing of screen box. Type inspection: Type inspection shall be carried out when any of the following situations occur: New products or old products are transferred to the factory for production; After formal production, there are major changes in structure, materials, and processes that may affect product performance; During normal production, periodic inspections shall be carried out after 3 years or after 50 units are produced; When the product is resumed after a long period of suspension; When there is a major difference between the factory inspection results and the last type inspection; When the national quality supervision agency proposes a requirement for type inspection. Inspection items
Amplitude;
Number of vibrations;
Angle of vibration direction;
Noise,
Maximum operating temperature of vibrator bearings,
Amplitude difference between symmetrical points on both sides of the plate;bZxz.net
Horizontal swing of the screen box;
Life of wearing parts;
Power of the motor;
Processing capacity.
6.3 Sampling and judgment rules
A vibration screen should be randomly selected from the finished product warehouse of the manufacturer for inspection. If one of the main indicators is unqualified, the product is judged to be unqualified.
7 Marking, packaging, transportation, storage
7.1 Marking
The contents of the vibration screen marking include:
Manufacturer name;
Product name and model,
Trademark;
Manufacturing date
Main parameters of the product.
JB/T5508-91
The packaging of the vibrating screen shall comply with the provisions of JB/ZQ4286. Random documents include:
Product certificate;
Product manual;
Packing list:
Installation drawing;
Other relevant technical data.
7.3 Transportation
The vibrating screen can be transported by water or land, and shall comply with relevant national regulations. 7.4 Storage
7.4.1 The vibrating screen should be stored in a dry, clean place and placed stably. 7.4.2 When the vibrating screen is placed in the open air, measures should be taken to prevent rain, sun and water. Additional notes:
This standard was proposed by the National Technical Committee for Standardization of Mining Machinery and is under the jurisdiction of the Luoyang Mining Machinery Research Institute. This standard was drafted by Anshan Mining Machinery Factory and Anshan Ferrous Metallurgical Mine Design Institute of the Ministry of Metallurgy. The main drafters of this standard are Xu Weiyao, Jiang Fuxiang, Wu Wancai, Wang Qingzhang, Liu Yongxiang,
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