Some standard content:
Machinery Industry Standard of the People's Republic of China
JB/T7014-93
Plate conveyor
Published on September 21, 1993
Ministry of Machinery Industry of the People's Republic of China
Implementation on July 1, 1994
Mechanical Industry Standard of the People's Republic of China
Plate conveyor
Subject content and scope of application
JB/T7014-93
The type, basic parameters, technical requirements, test methods, marking, packaging, transportation and storage of flat conveyors (hereinafter referred to as conveyors) are specified in this standard.
This standard applies to general-purpose fixed conveyors for conveying piece goods. Reference standards
GB3768
GB8350
GB8923
GB9286
GB/T13384
Types and basic parameters
3.1 Type
Determination of sound power level of noise source
Simplified method
Conveyor chains, accessories and sprockets
Rust grade and rust removal grade of steel surface before painting Scratching of paint and varnish film Standard test
General technical conditions for packaging of electromechanical products
The chain plate device composed of the conveyor chain and the table in the flat conveyor (see Figure 1 to Figure 8). According to the allowable load of two adjacent supporting rollers, it is divided into three types: light, medium and heavy.
The allowable load is less than or equal to 500N (see Figure 1): light
Medium-allowable load is less than or equal to 5000N (see Figure 1 to Figure 7); Heavy-allowable load is greater than 5000N (see Figure 8). Figure 1
Approved by the Ministry of Machinery Industry on September 21, 1993
Implemented on July 1, 1994
3.2 Basic parameters
3.2.1 Conveyor plate width B series:
JB/T7014-93
JB/T 7014 --93
160, 200.250, 315, 400, 500, 630, 800, 1000, 1250.1600, 2000, 2500, 3150mm. 3.2.2 Conveyor chain pitch P series:
80, 100, 125.160, 200, 250, 315, 400mm. 3.2.3 Conveyor speed series:
0.5, 0.63.0.8, 1.0, 1.25, 1.6, 2.0, 2.5, 3.15.4.0, 5.0, 6.3, 8.0, 10.0.12.5, 16, 20, 25m/min.
3.3 Model marking
Conveyor chain pitch code, cm
Plate width code, cm
Type code (light--Q, medium-sized without code, heavy--Z) Flat-bed conveyor code
Marking example:
Conveyor plate width 800mm, conveyor chain pitch 80mm, two adjacent bearing roller loads of 150N light flat-bed conveyor is marked as:
Conveyor BPQ808JB/T7014-93
Conveyor plate width 1600mm, conveyor chain pitch 40 0mm. The medium-sized flat plate conveyor with a load of 5000N for two adjacent supporting rollers is marked as:
Conveyor BP16040JB/T7014-93
The conveyor plate width is 1000mm, the conveyor chain pitch is 400mm, and the heavy-duty plate conveyor with a load of 16000N for two adjacent supporting rollers is marked as:
Conveyor BPZ10040JB/T7014-93
4 Technical requirements
4.1 The conveyor shall comply with the requirements of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.2 General requirements
4.2.1 The cover plates at the head and tail of the conveyor shall be easy to disassemble and inspect, and each rotating part shall be easy to repair and lubricate. 4.2.2 The structure of the conveyor shall be easy to manufacture, ship and assemble on site. 4.2.3 The conveyor shall be able to operate safely and reliably in an environment of -20 to +45°C. 4.3 Performance requirements
4.3.1 The main components of the conveyor should ensure:
Easy to install and disassemble, simple maintenance;
Main wearing parts are easy to replace:
All bearing parts are easy to lubricate.
Operation performance
The whole machine runs smoothly, without obvious end-movement creeping phenomenon; there is no silicon collision interference between the conveyor chain and the sprocket; b.
The mechanical noise of full load operation is not more than 80dB(A). 4.3.3 The conveyor can start and run normally under the condition of overload of 15%. It has an automatic overload protection function. 4.4 Requirements for main components
4.4.1 The conveyor chain should comply with the provisions of GB8350. 4.4.2 The tooth shape of the drive sprocket should comply with the provisions of GB8350. The mechanical properties of the sprocket material should not be lower than S45 steel, and the tooth surface quenching hardness should be 40~45HRC.
4.4.3 Track
JB/T7014-93
The longitudinal straightness tolerance of the track is 1.5/1000, and should not exceed 3mm within a length of 6m. 4.5 Assembly requirements
4.5.1 Conveyor chain
The joints of the finished conveyor chain should rotate flexibly without jamming. 4.5.2 Drive device
The drive device should run smoothly without jamming, and the test noise should not exceed 75dB (A); a.
b. For parallel drive devices, safety protection measures should be provided at one end of the belt drive. 4.5.3 Head wheel assembly
a. The position tolerance of the tooth profiles of the two adjacent sprockets on the same side of the main shaft is 2mm; b. The finished head wheel assembly should rotate flexibly without jamming. 4.5.4 Tensioning device
The sliding seat on the tensioning device should move flexibly without blocking. 4.6 Surface coating
a. All steel materials should be pre-treated and should meet the Sa2% level in GB8923. Manual rust removal should meet the requirements of St2 level, and burrs, scale, welding slag and oil stains should be removed. b. All unprocessed surfaces and processed non-matching surfaces should be painted with anti-rust paint, and the exposed surfaces should be painted with topcoat twice. The topcoat should be smooth and uniform, with consistent color and firm adhesion.
c. All matching exposed parts should be coated with anti-rust grease. d. The total thickness of the conveyor paint film should be 75-160μm, and the adhesion of the paint film should meet the requirements of Level 2 specified in GB9286. 4.7 Safety
The conveyor should be equipped with an overload protection device, an automatic sound and light alarm device should be installed in the control system, and an accident emergency stop device should be installed for long-distance transportation.
4.8 Product life
Under the conditions of use specified in the conveyor technical documents, the first overhaul period is 20,000 hours and the service life of the conveyor chain is 10 years.
Quality assurance
Under the conditions of the user complying with the transportation, custody, storage, installation and use requirements of the conveyor, within 18 months from the date of shipment from the manufacturer, the operating time shall not exceed 12 months, and if the product is affected by poor quality or damaged, the manufacturer shall repair or replace parts for the user free of charge.
5 Test methods and inspection rules
5.1 The parts of the conveyor must be inspected and qualified by the manufacturer's technical inspection department before they can leave the factory, and documents proving the quality of the product shall be attached when leaving the factory.
5.2 Track straightness test
Place the track on a platform that meets the flatness technical requirements, and use a pull line and a ruler to check the straightness of the track surface. 5.3 Conveyor chain ultimate tensile load test
The conveyor chain ultimate tensile load test shall comply with the provisions of Article 1.4.1 of GB8350. 5.4 Conveyor chain length accuracy test
The conveyor chain length accuracy test shall comply with the provisions of Article 1.4.2 of GB8350. 5.5 Conveyor chain rotation flexibility test
Assemble the finished chain of not less than 1m, turn the roller by hand, and check the roller rotation flexibility. Use one end of the chain to bend freely, and check the rotation flexibility of each joint. 5.6 Driving device no-load test
After the driving device runs no-load for 10 minutes, use a sound level meter to measure the noise of the driving device according to the rectangular hexahedron method specified in GB3768. 4
JB/T7014-93
Place the sound level meter on the contour line of the sprocket (or drive chain), 1m away from the sprocket (or drive chain), and measure the noise according to the A gear. During the test, excluding the pulse peak, the difference between the total noise and the background noise should be greater than 3dB (A). The total noise minus the background noise correction value (see the table below) is the actual noise value of the drive device noise.
Difference between total noise and background noise
Background noise correction value
5.7 Headwheel assembly test
5.7.1 Check the rotation flexibility by hand-pulling the sprocket. 4
5.7.2 When the main shaft and sprocket are assembled into a semi-finished product, the phase consistency of the tooth grooves of the two sprockets should be checked. Place the semi-finished product of the head wheel assembly on the platform, with the three tooth tips touching the ground, and measure the distance between the fourth tooth tip and the platform. 5.8 Tensioning device test
Turn the screw or nut on the tensioning device to check the movement flexibility of the sliding seat. 5.9 Paint film thickness inspection
Measure the paint film thickness with a magnetic thickness gauge.
5.10 Paint film adhesion inspection
The paint film adhesion shall be inspected in accordance with the provisions of GB9286. 5.11 No-load and load test of the whole machine
After on-site installation and commissioning, no-load and load tests should be carried out. No-load operation shall be no less than 4 hours, and load operation shall be no less than 8 hours, and the running stability and mechanical noise of the whole machine shall be checked.
5.12 Factory Test
Before the conveyor leaves the factory, the following tests shall be carried out: a.
Conveyor chain rotation flexibility test;bzxZ.net
Drive device no-load test:
Head wheel assembly test;
Tensioning device test;
Paint film thickness test;
Paint film adhesion test.
5.13 Type Test
Conveyors shall be subjected to type tests in the following circumstances: when the conveyor parts, structure, materials and process are changed; when the product is converted;
When the product is re-produced after being stopped for 6 months;
When required by the national quality inspection department.
Type test items include:
All items of factory test:
Conveyor chain ultimate tensile load test;
Conveyor chain length accuracy test:
Complete machine no-load and load tests.
Marking, packaging, transportation and storage
The label of the conveyor product should be fixed in a conspicuous position in the control cabinet. The content of the label includes: a.
Product name and model:
Running speed;
Motor power;
Factory number;
Factory date;
Manufacturer's name.
JB/T7014-93
6.2 The packaging of conveyor parts should comply with the requirements of GB/T13384. Random documents should be put into a plastic bag and placed in a box, and the words "Documents are here" should be written on the outside of the box. 6.3
Random documents include:
Product manual;
Product certificate;
Packing list.
When conveyor parts are packed or packed for shipment, each piece should be marked, including: a.
Product name, model, part name and quantity; factory number (or contract number) and box number; box size and gross weight;
Destination (port) and consignee;
Departure station (port) and manufacturer name, packing date. 5. Packed parts boxes should be rainproof. Unpacked parts should be bundled and painted before bundling. 6.5
Additional notes:
This standard was proposed and managed by the Beijing Hoisting and Conveying Machinery Research Institute of the Ministry of Machinery Industry. This standard was drafted by Chengde Conveyor General Factory. The main drafters of this standard are Wang Fengjie and Jiang Shuzhen. 6
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.