JB/T 2604-1994 Technical requirements for electromagnetic vibrating feeders
Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T2604-94
Electromagnetic Vibrating Feeder
Published on December 9, 1994
Technical Conditions
Implemented on October 1, 1995
Ministry of Machinery Industry of the People's Republic of China
Mechanical Industry Standard of the People's Republic of China
Technical Conditions for Electromagnetic Vibrating Feeder
1 Subject Content and Scope of Application
JB/T2604-94
Replaces JB2604-79
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging and storage of electromagnetic vibrating feeders (hereinafter referred to as electric vibrating feeders).
This standard applies to electric vibrating feeders driven by DZ type electromagnetic vibrators and also applies to electric vibrating feeders with other leaf spring structures. 2 Reference standards
GB1222
GB1348
GB1497
GB2521
GB3077
GB3525
GB3768
GB 5117
GB8923
GB9286
GB9439
GB10862
GB11352
Method for determining the depth of decarburized layer in steel
Metal Rockwell hardness test method
Technical conditions for high-quality carbon structural steel
Spring steel
Ductile iron castings
Basic standards for low-voltage electrical appliances
Cold-rolled electrical steel strip (sheet)
Technical conditions for alloy structural steel||tt| |Spring steel, tool steel cold-rolled steel strip
Simple method for determining the sound power level of noise sources
Carbon steel welding rod
Rust level and rust removal level of steel surface before painting Cross-cut test of paint and varnish film
Gray cast iron parts
GZ Electromagnetic vibrating feeder type and basic parameters Carbon steel castings for general engineering
GB/T13306
3 Technical requirements
Electric vibrating feeders shall comply with the requirements of this standard and shall be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 3.2 The type and basic parameters of electric vibrating feeders shall comply with the provisions of GB10862. 3.3 Materials of the main parts of the electric vibrating feeder 3.3.1 Shell, connecting fork
GZ01~GZ06 base adopts HT200 gray cast iron material with mechanical properties not lower than GB9439 specified in GB9439. DZ1~DZ5 shell adopts HT200 gray cast iron material with mechanical properties not lower than GB9439 specified in GB9439. DZ6~DZ9 shell adopts ZG270-500 cast carbon steel material with mechanical properties not lower than GB11352 specified in GB11352. DZ1~DZ5 connecting fork adopts QT400-18 ductile iron material with mechanical properties not lower than GB1348 specified in GB1348. DZ6~DZ9 connecting fork adopts ZG270--500 cast carbon steel material with mechanical properties not lower than GB11352 specified in GB11352. Approved by the Ministry of Machinery Industry on December 9, 1994
Implemented on October 1, 1995
3.3.2 Leaf spring
JB/T2604-94
Leaf springs are made of spring strip steel and flat steel processed from 60Si2Mn, 55Si2Mn and 65Mn alloy spring steels with mechanical properties not lower than those specified in GB3525 and GB1222.
3.3.3 Silicon steel sheets for core and armature are made of DW310-35 cold-rolled silicon steel sheets with mechanical properties not lower than those specified in GB2521. 3.3.4DZ6~DZ9 core seat and armature clamping plate are made of ZG270-500 cast carbon steel with mechanical properties not lower than those specified in GB11352. 3.3.5 Plate spring compression bolts
DZ1~DZ5 adopt high-quality carbon steel with mechanical properties not lower than 45 specified in GB699. a.
DZ6~DZ9 adopt alloy structural steel with mechanical properties not lower than 40Cr, 40MnB and 40Mn2 or 45 specified in GB3077 b.
3.3.6 Welded structural parts adopt E43 series carbon steel electrodes with mechanical properties not lower than those specified in GB5117. 3.4 The main metal materials should have the quality certificate of the material supplier. Otherwise, they should be inspected in the manufacturer and can only be used after being confirmed to be qualified. 3.5 The electric vibrating feeder should work reliably under the following conditions: the working environment temperature is 25~40℃;
the relative humidity of the surrounding medium is not more than 85% at 20±5℃: the surrounding medium has no explosion hazard;
there is no serious corrosive medium or medium that affects the electrical insulation performance; the voltage fluctuation range of the power supply network is 5%; the frequency fluctuation range of the power supply network is 1% of the standard value; the longitudinal pressure length of the electric vibrating feeder shall not be greater than one-third of its slot width. The amplitude of the electric vibrating feeder should be steplessly adjusted and can be started frequently at full load and full voltage. 3.6
The electric vibrating feeder should work under the low critical near-resonance state, and the amplitude drop rate after load shall not be greater than 9% of the rated amplitude. In the case of excluding the influence of power grid fluctuations, the amplitude fluctuation is ±7% of the design value. The electric vibrating feeder should adopt the control method of half-wave rectifier circuit power supply of silicon controlled element. The control device should ensure that the control angle of the silicon controlled element is continuously adjustable from αmi to αmx. 3.10
The manual control device must be able to introduce automatic control or remote control signals. The control device should be able to work for a long time, and the temperature rise of the conductive part shall not exceed 60℃. 3.12
The electrical clearance and creepage distance of the control device shall not be less than the provisions of Table 1. Table 1
Rated voltage
251~380
Rated current is not more than 60A
Electrical distance
Leakage distance
The double amplitude of the electric vibrating feeder shall not be less than the provisions of Table 2. Table 2
Electric vibrating feeder model
GZ01--GZ06
GZ1GZ5
GZS3~GZS5
GZF1~GZF5
Rated current is greater than 60A
Electrical distance
Leakage distance
Electric vibrating feeder model
GZ6~GZ11
GZS6~GZS8
GZQ5~GZQ8
GZP5~GZP7
JB/T2604-94
Continued Table 2
The material conveying speed of each part in the feeding trough should be consistent, and deviation, swirling and severe material jumping are not allowed. 3.15
3.16 Technical requirements for leaf springs
The hardness of leaf springs after heat treatment is 40~47HRC, and its metallographic structure is tempered troostite, with a small amount of ferrite allowed in the core. 3.16.1
3.16.2 The depth of decarburization layer after heat treatment shall not exceed the requirements of Table 3. Table 3
Electric vibrating feeder model
Depth of decarburization layer
Note: ? is the thickness of leaf spring
GZ01~GZ06
GZ1~GZ5
GZ6~GZ9
3.16.3 After heat treatment, there shall be no overburning phenomenon, the surface and edges shall be clean, and there shall be no layer of skin, cracks, oxide scale and pitting. mm
3.16.4 After heat treatment, leaf springs with a thickness of more than 2 mm should be shot peened. The average shot peening coverage rate for GZ2~GZ9 is more than 80%. GZ01~GZ06 and GZ1 are not shot peened. 3.16.5 The flatness of the leaf spring should comply with the requirements of Table 4. Table 4
Electric vibrating feeder model
Flat spring flatness
Note: L is the length of the leaf spring.
GZ01~GZ06
3.16.6 The temperature rise of the leaf spring shall not exceed 50℃. 3.17
Technical requirements for core and armature
GZI, GZ2
GZ3~GZ5
When the core and armature silicon steel sheets are dropped, the working magnetic flux direction should be the same as the rolling direction of the silicon steel sheets. Remove the burrs after punching the silicon steel sheets.
The surface of silicon steel sheet shall be coated with silicon steel sheet insulation paint, and the thickness of the paint film on both sides shall not exceed 0.02mm. The roughness R of the working surface of the core air gap is 6.3um. The temperature rise of the core shall not exceed 55℃.
The flatness of the working surface of the core air gap shall comply with the provisions of Table 5. Table 5
Electric vibrating feeder model
Flatness of the working surface of the core air gap
GZ01~GZ06
The roughness R of the working surface of the armature air gap is 6.3um. 3.17.8 The flatness of the armature air gap working surface shall comply with the provisions of Table 6. GZ3～GZ5
GZ6～GZ9
Electric vibrating feeder model
Flatness of the armature air gap working surface
Technical requirements for wire diagram
GZ01GZ06
JB/T2604-94
GZ3～GZ5
The insulation grade of the main material and auxiliary material of the coil shall not be lower than Class B. GZ6.GZ7
The windings are all wound in a clockwise direction, with reliable insulation between layers, neat wiring, and firm welding of lead wires. 3.18.3
The deviation of the DC resistance value at 20℃ is ±5% of the standard value. 3.18.4
Under normal working conditions, the temperature rise of the coil shall not exceed 65℃. When the coil is subjected to a test voltage of 2500V, there is no insulation breakdown or flashover within 1 minute. mm
After the coil is subjected to 6 cycles of alternating damp heat test, its insulation resistance value shall not be less than 1.5MQ. The insulation resistance value to ground shall not be less than 10Mα.
3.19 Technical requirements for shell and connection
3.19.1 The shell and connection fork castings shall not have defects such as cracks, pores, slag inclusions, etc. 3.19.2 The precision of the leaf spring tightening screw holes of DZ1~DZ5 shell and connection fork is 6H. 3.20 Technical requirements for feed trough
3.20.1 The mechanical strength of the feed trough weld shall not be lower than that of the parent material, and there shall be no defects such as incomplete penetration, cracks, pores, slag inclusions, etc. The feed trough should be flat, and the flatness tolerance is 3mm over a length of 1000mm. 3.20.2
3.20.3 The two thrust plates of the lower vibration feeder trough shall be parallel and symmetrical to the center line of the trough body. The parallelism tolerance of the two thrust plates is 3mm, and the symmetry tolerance of the two thrust plates to the center line of the trough body is 2mm. 3.20.4 The two thrust plates of the upper vibration feeder trough shall be parallel and symmetrical to the center line of the trough body. The parallelism tolerance of the two thrust plates is 1.5mm, and the symmetry tolerance of the two thrust plates to the center line of the trough body is 2mm. 3.21 Technical requirements for leaf spring tightening bolts
3.21.1 The hardness of the tightening bolts after quenching and tempering is 266~300HB. The thread accuracy is 6h.
3.21.3 The surface is treated with blackening.
3.22 The noise should be less than the requirements of Table 7.
Electric vibrating feeder model
Noise level
GZ01～GZ06
GZ3～GZ5
All parts must be inspected and qualified, and purchased parts and cooperative parts must have a certificate of qualification before they can be assembled. dB(A)
GZ6～GZ11
During assembly, the core and armature should be aligned, the working air gap is 2.5mm, the deviation is ±0.1mm, and the parallelism tolerance of the air gap working surface is 3.24
0.25mm.
During assembly, the relative misalignment of the core and armature shall not exceed the provisions of Table 8. Table 8
Electric vibrating feeder model
Relative misalignment of the core and armature
GZ01GZ06
3.26The positions of the spring plate and gasket should be neat and consistent, and all fasteners should be firm and reliable. GZ1～GZ5
GZ6～GZ9
3.27 Before painting, rust removal should be carried out according to the requirements of GB8923. Manual rust removal is St2 level, and shot peening is Sa2V% level. 4
JB/T2604-94
3.28 The thickness of each layer of paint film of the electric vibrating feeder shall not be less than 25μm, and the total thickness of the paint film shall not be less than 75μm. 3.29 The adhesion of the paint film shall comply with the provisions of Level 2 in GB9286. 3.30 Under the condition that the user complies with the storage, use and transportation rules of this product, within 18 months from the date of shipment from the manufacturer, the service life shall not exceed 12 months. If the product is damaged or cannot work normally due to poor quality (except for normal wear of the feed trough), the manufacturer shall repair or replace parts (or products) for the user free of charge. 4 Test method
4.1 No-load test
Each electric vibrating feeder shall be tested for no less than 4 hours of no-load operation before leaving the factory under the condition of qualified commissioning, and the double amplitude of the electric vibrating feeder shall be checked.
4.2 Load test
The electric vibrating feeder undergoing load test shall be tested for feeding capacity and amplitude change with river sand of 1.6t/m, and its value shall meet the requirements of GB10862.
4.2.1 Determination of feeding amount
a. Determination conditions
In the test of determining feeding amount, the material used is river sand with a density of 1.6t/m and a water content Q not greater than 10%, and the current value indicated by the control device shall not exceed the design value.
b. Test time
Determination of feeding amount test time t; according to the provisions of Table 9. Table 9
Calculation of feeding amountbZxz.net
The feeding amount T is calculated according to formula (1):
Wherein: T-feeding amount, t/h;
GZ01～GZ06
T = 60 XT/t
T-actual feeding amount during the test period, t/h; ti-test time, min.
4.2.2 Determination method of load amplitude reduction rate GZ1～GZ5
Under no-load rated amplitude, load the electric vibrating feeder and use GZ2 vibration meter to measure the load amplitude. a.
The load amplitude reduction rate is calculated according to formula (2):
A1=100%×(AA)/A rated
Wherein: A1 load amplitude reduction rate;
A negative——load amplitude, mm;
A rated rated amplitude, mm.
4.2.3 Determination of amplitude fluctuation
GZ6～GZ11
·(2)
After the electric vibrating feeder runs for 2 hours without load, under the condition of rated amplitude, excluding the influence of grid frequency and voltage fluctuation, the amplitude value is measured with a GZ2 vibration meter and recorded every 0.5 hours. b. The measurement time of amplitude fluctuation is 4 hours.
Amplitude fluctuation is calculated according to formula (3):
A2-100%×(AA%)/A
(3)
Where: A2 Amplitude fluctuation:
JB/T2604-94
A. During the test period, the measured amplitude value when the amplitude deviation is the largest, mm4.3 Determination of temperature rise
4.3.1 Determination of coil temperature rise
a. The electric vibrating feeder under test should be shut down for no less than 8 hours before the temperature rise measurement. The electric vibrating feeder should run for 6 hours under the rated amplitude condition and the measurement should be made immediately after the shutdown.
b. Use Kevin DC bridge to measure the coil cold resistance value R before starting, and the coil hot resistance value R2 after the electric vibrating feeder has been running for 6 hours. Use mercury thermometer to measure the ambient temperature to and t1 at the beginning and end of the test. The temperature rise of the coil is calculated according to formula (4):
At (R,-R,)(235 +ta)/R, + tt) Where: At-4
Temperature rise of the coil, °C;
R,-cold resistance value of the coil before starting, QR-hot resistance value of the coil after the electric vibrating feeder has been running for 6 hours, 2; t.
Ambient temperature at the beginning of the test, °C;
t—-Ambient temperature at the end of the test, °C. 4.3.2 Determination of temperature rise of iron core and leaf spring
The temperature rise of the iron core and leaf spring is measured with an expansion point thermometer and calculated according to formula (5): At= tt2
Where: At—-Temperature rise of the iron core and leaf spring, °C; t——Surface temperature of the iron core and leaf spring at the beginning of the test, °C; .Surface temperature of the iron core and leaf spring at the end of the test, °C. 4.4 Operation stability test
The electric vibrating feeder is subjected to a stability test for 56 hours continuously under rated conditions. 4.5 Electrical performance test
Insulation performance Use a 500V megger to check the insulation resistance value of the coil to the ground. a.
Withstand voltage strength Use a power frequency of 2500V (power supply power is not less than 0.5kVA) to carry out a withstand voltage test for 1 minute. 4.6 The electric vibrating feeder uses a sound level meter to measure the noise of the whole machine according to the method specified in GB3768. 4.7 Hardness test of leaf spring
The hardness test of leaf spring is carried out in accordance with the provisions of GB230. a.
The number of leaf springs extracted for each type of electric vibrating feeder should be no less than 30. 4.8 Decarburization layer test of leaf spring
The decarburization layer test is carried out in accordance with the provisions of GB224. ·（4）
The number of leaf springs extracted by each type of electric vibrating feeder shall be no less than 2 pieces, and one test piece shall be taken from each end and the middle of each sample. c.
The leaf spring samples for decarburization layer inspection shall be randomly selected from the products before the leaf spring hardness test. 4.9 Flatness of leaf spring
Put the leaf spring on a flat plate and inspect it with a feeler gauge. 4.10 Shot peening coverage
a: Place the leaf spring under a 25x magnifying glass for visual inspection and compare it with the standard photob.The number of leaf springs extracted by each type of electric vibrating feeder should be no less than 10. Each leaf spring is divided into four equal areas along the length direction for inspection, and the shot peening coverage is calculated based on the average value of each area. 4.11 Parallelism of air gap working surface
Use a feeler gauge to detect the air gap value at the four corners of the core working surface. The difference between the maximum air gap of 8mx and the minimum air gap of 2mm (omr-omlm) is the parallelism of the air gap working surface.
4.12 Paint quality inspection method
a. Paint film thickness inspection method
JB/T2604-94
Use a lever micrometer or paint film thickness gauge to take a point on the outside of the feed trough and thrust plate, one point on the front and back, and one point on the left and right of the vibrator for testing, and take the average value of the two tests. b. Paint film adhesion test method
The paint film adhesion is tested according to the GB9286 grid test method. Take one point on the outside of the feed trough and thrust plate, one point on the left and right of the vibrator for testing.
4.13 The electric vibrating feeder must be inspected and qualified by the technical inspection department of the manufacturer before it can be shipped. When it leaves the factory, it should be accompanied by a product certificate, product instruction manual and packing list.
5 Inspection rules
Each electric vibrating feeder must be tested before leaving the factory. 5.1
5.2 Factory inspection items
Feeding amount;
Amplitude;
Temperature rise of coil, iron core and leaf spring;
Insulation strength of coil:
Parallelism of air gap working surface, air gap;
Paint film thickness and adhesion of paint film. 5.3 Type test should be carried out in any of the following cases: a.
New products (including complete machines and components)
Trial production of old products transferred to the factory;
When the product structure, materials, and processes have changed significantly, which may affect the product performance; d.
When the production is resumed after a long-term (more than three years) suspension 5.4 Type test items
All contents of the factory inspection items:
Operation stability test:
Electrical performance test.
6 Marking, packaging and storage
6.1 Product label
6.1.1 The size and technical requirements of the product label shall comply with the provisions of GB/T13306. 6.1.2 The basic parameters such as product model, feed amount, relative amplitude, vibration frequency, power supply voltage, grid frequency, working current, feed particle size, total weight of the equipment, as well as product number, manufacturer name, and factory date shall be indicated on the product label. 6.2 The control device and spare coil of the electric vibrating feeder are packed in boxes; the feeding trough is packed naked; the rest are packed in lattice boxes. The packed parts, spare parts and technical conditions should be rainproof and meet the requirements of long-distance transportation safety, convenient lifting and multiple loading and unloading. 6.3 The boxed parts should be firmly fixed on the base, the fasteners should not be loose, and the various instruments and meters of the control device should not contact and collide with the packaging box.
6.4 The packaging box logo should be painted with clear and correct handwriting. 6.5 When stored in the open air, it should be packed in a well-ventilated and non-water-logging packaging, and rust should be prevented when stored for a long time. 6.6 All frames should be stored on a flat ground with a cover to prevent deformation and rust. 7
Additional remarks:
JB/T2604
This standard was proposed and drafted by the Beijing Hoisting and Conveying Machinery Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Liu Qiao and Wang Yuzhan.
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