JB/T 3766-2000 This standard is a revision of JB 3766-84 "Hammer Crusher for Limestone". The revised standard adds varieties and specifications. This standard specifies the types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and manufacturing guarantee of hammer crushers for limestone. This standard is applicable to hammer crushers for limestone. This standard was first issued on October 6, 1984. JB/T 3766-2000 Hammer Crusher for Limestone JB/T3766-2000 Standard download decompression password: www.bzxz.net

ICS73.120
Machinery Industry Standard of the People's Republic of China
JB/T3766-2000
Hammer crusher for limestone
Published on April 24, 2000
National Bureau of Machinery Industry
Implemented on October 1, 2000
JB/T3766—2000
This standard is a revision of JB/T376684 "Hammer crusher for limestone". Compared with JB/T376684, the main technical content of this standard has been changed as follows: the varieties and specifications, especially the specifications of large products, have been increased; a series of one-stage hammer crushers has been added to the first standard series. This standard replaces JB/T3766—84 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The responsible drafting unit of this standard is Shenyang Heavy Machinery Group Co., Ltd. The main drafters of this standard are Shen Dewen, Xin Rui, Na Shengwu and Guo Ming. 1
1 Scope
Machinery Industry Standard of the People's Republic of China
Hammer crusher for limestone
Hammer crusher for limestone
JB/T3766—2000
Replaces JB/T3766—84
This standard specifies the type and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and manufacturing guarantee of hammer crushers for limestone.
This standard applies to hammer crushers for limestone (hereinafter referred to as crushers). 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T3768——1996
GB/T 5226.1—1996
GB/T5680—1998
GB/T 6402—1991
GB/T92391988
GB/T 133061991
GB/T133841992
JB/T16041998
JB/T5000.3—1998
JB/T6397—1992
3 Types and basic parameters
Acoustics Sound pressure method for determining the sound power level of noise sources Simple method using envelope measurement surface above the reflecting surface Industrial machinery and electrical equipment Part 1: General technical conditions High Manganese steel castings
Ultrasonic inspection method for steel forgings
Determination of allowable imbalance of rigid rotor balance quality
General technical conditions for packaging of electromechanical products
Model compilation method for mining machinery products
General technical conditions for heavy machinery welded parts
Large carbon structural steel forgings
3.1 There are three types of crushers, namely irreversible crushers, reversible crushers and one-stage crushers. The structural schematic diagrams are shown in Figures 1, 2 and 3.
Approved by the State Machinery Industry Bureau on April 24, 2000, and implemented on October 1, 2000
1 Frame part: 2 Rotor part:
3—Grate part: 4 Striking plate
Figure 1 Irreversible type
JB/T3766—2000
1—Frame part: 2—Adjustment part:
3 Rotor part: 4—Grate part
Figure 2 Reversible type
1—Frame part; 2—Feeding part: 3—Rotor part: 4 Safety door part: 5—Grate part Figure 3
One-stage
JB/T3766—2000
The product model representation method shall comply with the provisions of JB/T1604. IPCOOO
Rotor length, dm
Rotor diameter, dm
K-reversible, Y-one-stage
Irreversible not marked
Crusher
2-Double rotor
Single rotor not marked
Marking example:
Irreversible double rotor limestone hammer crusher with a rotor diameter of 600mm and a rotor length of 400mm is marked as: 4 Limestone hammer crusher
2PC-0604
One-stage limestone hammer crusher with a rotor diameter of 2000mm and a rotor length of 2000mm is marked as: PCY-2020
Limestone hammer crusher
Basic parameters should comply with the provisions of Table 1. wwW.bzxz.Net
PC-0404
PC-0604
PC-0806
PC-0808
PC-1010
PC-1212
PC-1412
PC-1414
PC-1616
PC-1818
PC-2018
PC-2022
PC-2225
PCK-0606
PaK-0808
PCK-10 10
PCK-1413
PK-1416
PCY-2020
PCY-2030
Rotor diameter
Rotor length
Maximum feed size
600×600×900
800X800×1000
1100×1100×1500
800×1000×1250
1000X1000×1250
1200×1200×1800
1 100×1100×1500
11001100×2000
1Rotor diameter refers to the maximum discharging particle size when the rotor is in working state
The diameter of the circular motion track at the top of the hammer head
90-110
80-130
160-180
150-240
330-420
500-600
1200-1400
300-400
Rotor speedMotor power
132-355| |tt||280~355
500-630
710-900
520-550
2 Output refers to the output when the crushed material has a compressive limit of less than 120MPa, surface moisture less than 2%, and a density of 1.6tm21.15
4 Technical requirements
4.1 Basic requirements
JB/T3766-2000
4.1.1 The crusher shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved by the prescribed procedures. The transmission device can be installed on the left or right side of the crusher. 4.1.2
4.1.3 The wearing parts of the same type of crusher shall be interchangeable. 4.1.4
The hammer head and bars and other wearing parts should be easy to replace
The adjustment of the grate mechanism should be flexible and reliable. 4.1.6 Grate bars with different gaps can be selected according to the user's crushing particle size requirements. 4.1.7 The electrical equipment should comply with the provisions of GB/T5226.1. 4.2 Requirements for main parts
4.2.1 The material of the hammer head and grate bars should not be lower than the requirements of GB/T5680. 4.2.2 The material of the main shaft should not be lower than 45 forged steel and should comply with the requirements of JB/T6397. The quality of ultrasonic inspection should comply with the Level 2 regulations in GB/T6402.
4.2.3 The quality of the welded frame should comply with the requirements of JB/T5000.3. 4.3 Assembly requirements
4.3.1 Each bearing should have a good seal, and no dust or oil leakage should be allowed to enter. 4.3.2 The rotor part shall be subjected to static balance test before the hammer head is installed, and its unbalance quality shall comply with the provisions of G6.3 in GB/T9239. The weight of the hammer head shall be marked, and its weight deviation shall not exceed ±1kg, and it shall be assembled in a balanced manner. 4.4 Performance requirements
4.4.1 The temperature of the main bearing shall not exceed 60℃, and the temperature rise shall not exceed 30℃. 4.4.2 The transmission part and the rotor part shall operate flexibly without any jamming. 4.4.3 The amplitude measured on the main bearing shall not exceed 0.2mm. The spokes of the pulley and flywheel of the crusher shall be painted red. 4.4.4
4.4.5 The noise of the crusher under no-load shall not be greater than 90dB (A). 4.4.6
The service life of the crusher before the first overhaul shall not be less than 10,000 hours. The crusher shall be equipped with safety protection devices.
4.5 Completeness
4.5.1 The complete set of equipment includes the crusher body, transmission device, motor and low-voltage electronic control equipment. 4.5.2 The manufacturer can provide spare parts according to user requirements. 4.5.3 Export products shall comply with the requirements of foreign trade contracts. 4.5.4 Each crusher shall be accompanied by a certificate of conformity, instruction manual, general drawing, foundation drawing, electrical control diagram and packing list. 5 Test method
5.1 The main dimensions of the crusher shall be inspected with universal measuring tools. 5.2 Check the rotating part. It should rotate flexibly and without jamming when it is manually turned. 5.3 The static balance test of the rotor part can be carried out by the balancing method of the horizontal parallel shaft seat. After assembling the hammer head, it shall be inspected according to the calibration value recorded in the relevant process documents.
JB/T3766-2000
5.4 The no-load test run of the crusher shall not be less than 2h. During the test run, check: a) Use a vibration meter to detect the horizontal and vertical amplitude values ​​(single amplitude) above and on both sides of the crusher bearing seat; b) Detect the noise value in accordance with the provisions of GB/3768; c) Insert a thermometer into the oil filling hole of the bearing seat to detect the bearing operating temperature, and measure it every 30mm until the temperature stabilizes. 5.5 The crusher should be tested under load at the user's site. The inspection contents include: a) Output test, which can be determined by the continuous operation conversion method, that is, all the crushed materials in a certain period of time are measured and converted into hourly output, and the cumulative time is not less than 0.5h:
b) Discharge particle size test, use the screen with national standard mesh to screen and make a percentage curve of the material under the screen c) Power test, use a power meter to test;
d) Repeat the various inspection contents of 5.4
6 Inspection rules
6.1 Sampling method
6.1.1 For products produced in single batches, one unit is selected as a sample for finished product inspection. If there is any unqualified, 50% of the total number of this batch should be selected for further inspection. If it is still unqualified, all products should be inspected. 6.1.2 Samples in the production process, one unit is selected or the whole machine is disassembled for inspection (the large parts of the product shall be subject to the product process inspection record). 6.2 Factory inspection and type inspection
6.2.1 Each product must be inspected before delivery, and its contents and requirements shall comply with the provisions of 4.1.5, 4.4.2, 4.4.3 and 4.4.5. 6.2.2 Type inspection shall be carried out in any of the following cases: a) During trial production, finalization and appraisal of new products; b) After formal production, if there are major changes in structure, design, process or materials; ) When the national quality supervision agency proposes type inspection requirements. 6.2.3 Type inspection items include all requirements of this standard. 7 Marking, packaging, transportation and storage
7.1 The label shall be fixed in a conspicuous position on the product, and its type and size shall comply with the provisions of GB/13306. The content of the label shall include: a) Manufacturer's name and trademark:
b) Product model and name;
c) Main technical parameters of the product:
d) Product number:
e) Date of delivery.
7.2 Product packaging should comply with the provisions of GB/T13384. Each package should be marked when it is shipped. The content is: a) Receiving unit and address;
b) Product name and model:
c) Manufacturer name and factory number;
d) Box number, external dimensions, gross weight.
7.3 Products should be packaged according to the packing list. The exposed processed surface should be coated with anti-rust oil and wrapped well. For export products, the requirements of foreign trade orders should be met. 7.4 Electrical equipment, complete sets of accessories, etc. should be packed into boxes. 5
JB/T37662000
5 Packaging should meet the requirements of water and land transportation. The whole packaging and sub-packaging of products shall not exceed the limit. 7.5
During long-term storage, dust should be prevented from falling on the products, and electrical equipment should be prevented from moisture. 7.6
8 Manufacturing Guarantee
The manufacturer shall ensure that the product meets the requirements of this standard. 8.1
The user shall comply with this standard and the instruction manual. The product shall be used for 18 months from the date of delivery or 12 months during this period. 8.2
If the product cannot work properly due to poor manufacturing quality, the manufacturer shall repair or replace product parts for the user free of charge. This warranty period does not include consumable parts such as hammer heads and grate bars.
Mechanical Industry Standard
Hammer Crusher for Limestone
JB/T3766-2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Word Count 14.000
First Edition in August 2000 First Printing in August 2000 Print Quantity 1-500
Price 1200 Yuan
2000-119
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn00995
The product should be protected from dust during long-term storage, and the electrical equipment should be protected from moisture. 7.6
8 Manufacturing guarantee
The manufacturer shall ensure that the product meets the requirements of this standard. 8.1
The user shall comply with this standard and the instruction manual. The product shall be used for 18 months from the date of delivery or 12 months during this period. 8.2
If the product cannot work properly due to poor manufacturing quality, the manufacturer shall repair or replace product parts for the user free of charge. This warranty period does not include consumable parts such as hammer heads and grate bars.
Mechanical Industry Standard
Hammer Crusher for Limestone
JB/T3766-2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Word Count 14.000
First Edition in August 2000 First Printing in August 2000 Print Quantity 1-500
Price 1200 Yuan
2000-119
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn00995
The product should be protected from dust during long-term storage, and the electrical equipment should be protected from moisture. 7.6
8 Manufacturing guarantee
The manufacturer shall ensure that the product meets the requirements of this standard. 8.1
The user shall comply with this standard and the instruction manual. The product shall be used for 18 months from the date of delivery or 12 months during this period. 8.2
If the product cannot work properly due to poor manufacturing quality, the manufacturer shall repair or replace product parts for the user free of charge. This warranty period does not include consumable parts such as hammer heads and grate bars.
Mechanical Industry Standard
Hammer Crusher for Limestone
JB/T3766-2000
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing: Postal Code 100044)*
Format 880X12301/16 Printing Sheet 3/4
4 Word Count 14.000
First Edition in August 2000 First Printing in August 2000 Print Quantity 1-500
Price 1200 Yuan
2000-119
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn0099
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