This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of charge chargers. This standard applies to charge chargers. This product is mainly used for charging explosives in underground mining and blasting operations such as chambers and tunnels, and can also be used in ground earthwork projects. JB/T 2478-1999 Charge charger JB/T2478-1999 standard download decompression password: www.bzxz.net

ICS 73.100.10
Standard of the Machinery Industry of the People's Republic of China
JB2478-1999
Explosiveloader
Published on 1999-06-28
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB2478-1999
This standard is a revision of JB2478-86 "Explosive Loader". Compared with JB2478-86, the main technical contents of this standard have been changed as follows: 1. The product model representation method is standardized according to the relevant provisions of JB/T1604-1998 "Mining Machinery Product Model Compilation Method"; 1. In the inspection rules part, the inspection and judgment rules for the additional inspection batch of unqualified products are added; 1. In the random technical documents part, it is clarified that the product manual should have requirements for guiding users in safe use. This standard replaces JB2478-86 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Standardization of Mining Machinery. The drafting units of this standard are Luoyang Mining Machinery Research Institute and Changzhi Mining Machinery Factory. The main drafters of this standard are Yang Xianli, Li Junkang and Li Liuquan. This standard was first issued in 1979 and revised for the first time in July 1986. 1 Scope
Machinery Industry Standard of the People's Republic of China
Explosive loader
JB2478-1999
Replaces JB2478-86
This standard specifies the type, basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of charge loaders.
This standard applies to charge loaders. This product is mainly used for loading explosives in underground mining and blasting operations in chambers, tunnels and other engineering projects, and can also be used in ground stone projects.
Cited 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 191—1990
GB/T13306—1991
GB/T13384—1992
JB/T1604—1998
3 Types and basic parameters
Packaging storage and transportation graphic symbols
General technical conditions for packaging of electromechanical products
Method for compiling mining machinery product models
3.1 Chargers are divided into two types: compressed air and jet according to their working mode. 3.2 The model representation method of chargers shall comply with the provisions of JB/T1604. BQ
口-口
Charge quantity, kg
Applicable explosive type, F is powdered explosive
Type code, press-in type without injection, P is jet type (spray) charger (device)
Charge equipment
3.3 The basic parameters of the charger shall comply with the provisions of Table 1. Table 1
Basic parameters
Charge quantity of medicine barrel
Withstand air pressure
Working air pressure
BQP-20
0.35~0.60
Approved by the State Machinery Industry Bureau on June 28, 1999BQ-50
0.20~0.40
BQ-100
0 .20~0.40
Table 1 (end)
BQF-100
0.25~0.45
BQ-200
0.30~0.50
BQ-500
0.30~0.55
2000-01-01 implementation
Basic parameters
Inner diameter of drug delivery tube
Loading capacity
Moving mode
4 Technical requirements
BQP-20
16，19
Back strap type
JB2478-1999
Bar lift type
BQ-100
25，32
Bar lift type
BQ F-100
25，32
Lever lift type
BQ-200
25，32
BQ-500
32，40
Rail wheel push type
Rail wheel push type
4.1 Chargers shall comply with the requirements of this standard and be manufactured according to drawings and technical documents approved by the prescribed procedures. 4.2 The materials of the main parts of the product shall strictly comply with the requirements of the drawings and can only be provided for manufacturing after passing the inspection. 4.3 Each control valve shall ensure flexible, accurate and reliable operation, and there shall be no air leakage in the working state. 4.4 Within the working air pressure range, when filling powdered or granular explosives (humidity not more than 5%), the charge density is 0.9~1.0g/cm2, and the powder return rate shall not be more than 6% (jet charge machine not more than 10%). 4.5 Purchased accessories such as pressure regulating valves, pressure gauges, semiconductor plastic pipes, pressure-resistant rubber air ducts, etc. should all comply with their corresponding product standards and have product certificates.
4.6 Safety requirements
When using a charge loader to charge, in order to prevent the premature explosion of the electric detonator caused by static electricity generated during the charging process, the following requirements are required: a) The charge delivery tube must be made of semiconductor plastic tube, and its volume resistivity must be required to be 10~10°Q·cm; b) The relative humidity of the air at the work site should reach more than 85%; c) The charge loader must be well grounded during the charging process; d) When using electric detonators for detonation, in addition to taking the above safety measures, other necessary anti-static measures must be taken: The operator must ground himself before touching the detonator; Charge first, then detonator, that is, use the hole initiation method for detonation; Before blasting, the electric detonator must be checked for conductivity to prevent the detonator with broken bridge wire from being installed in the blasthole; When the electric detonator needs to be installed at the bottom of the hole, the electric detonator leg wire and the lines connected to it must be strictly short-circuited, closed and insulated before charging, and necessary regional power outages must be implemented in the blasting area to measure stray currents. When the stray current does not exceed 50mA, it is generally considered safe.
4.7 Completeness
4.7.1 Host
4.7.2 Random accessories and spare parts:
a) Two 30m long semiconductor plastic tubes (the semiconductor plastic tubes supplied by BQP-20 type charge device are 10m long each); b) Two pairs of pressure-resistant rubber air duct spring clamps;
) One drug delivery hose connector.
4.7.3 In addition to complying with the provisions of this standard, exported products shall also comply with the relevant provisions of the foreign trade contract. 4.8 Manufacturer's quality assurance
If the user complies with the storage and use rules of the charge device, within one year from the date of shipment from the manufacturer or within six months from the date of use, if the product is damaged or cannot work normally due to poor manufacturing quality, the manufacturer shall repair or replace parts for the user free of charge. 5 Test methods and inspection rules
5.1 Component test
JB 2478-1999
5.1.1 After the discharge valve, through valve and gas distribution leg are assembled, a 0.7MPa air pressure test should be carried out. There should be no leakage after 5 minutes.
5.1.2 After the charge barrel is assembled, a pressure test should be carried out. The test should be carried out under a 0.7MPa water pressure. There should be no water leakage after 5 minutes. 5.2 Factory Inspection
5.2.1 Pressure Test of the Whole Machine
After the product is assembled, before leaving the factory (or entering the warehouse), the whole machine pressure test should be carried out: a) The charge device is connected to the compressed air system. Under the pressure test condition that the output pressure of the pressure regulating valve is 0.6MPa, the barrel body, each control valve and the gas circuit system shall not leak:
b) The charge device is subjected to the 0.7MPa air pressure test and maintained for 5min. The air pressure drop of the whole machine should not be greater than 5×10*Pa. 5.2.2 Whole machine assembly and appearance quality inspection: a) The whole machine assembly position is correct (check according to the product assembly orientation diagram); b) The operating parts are flexible to rotate, and the work is accurate and reliable; c) The welding of each welding point is reliable and the weld is neat. The product appearance is smooth and beautiful, and the inside and outside of the medicine barrel (including the head) should be smooth and bright, without obvious unevenness.
5.3 Inspection rules
5.3.1 Each product must be inspected and qualified by the quality inspection department of the manufacturer before it can be shipped out of the factory, and a product certificate must be attached when it leaves the factory. 5.3.2 Products should be fully inspected when they are produced in small batches; when they are produced in batches (each batch is more than 30 units), random inspections can be carried out, and the random inspection ratio should not be less than 10% of the total number of units produced in each batch (the pressure resistance test of the barrel must be carried out unit by unit). Products that fail the inspection are allowed to be returned for repair. After repair, the whole machine must still be inspected. At the same time, a 10% increase in the ratio of the first random inspection should be carried out for random inspection. If there are still unqualified products, the entire batch should be inspected unit by unit.
6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 Product marking
Each product shall be fixed with a product label in a conspicuous position. The type and size of the label shall comply with the provisions of GB/T13306 and indicate the following:
a) Product name and model;
b) Main technical specifications;
? Factory number:
d) Manufacturing date:
e) Manufacturer's name.
6.1.2 External packaging marking
The shipping mark and storage and transportation operation instruction mark on the outer wall of the packaging box shall comply with the provisions of GB191. 6.2 Packaging
The packaging of the product shall comply with the provisions of GB/T13384. 6.2.1 Random accessories and spare parts shall be placed in the accessory box, which shall be placed in the whole machine box and fixed to the bottom plate. 6.2.2 Semiconductor plastic tubes shall be bundled and packaged separately and shipped together with the host. 6.2.3 Technical documents supplied with the product
JB 2478-1999
a) Product instruction manual
(should include product safety requirements); b) Product factory certificate:
c) Packing list.
6.3 Transportation and storage
6.3.1 During lifting and handling, the packaging box must not be excessively tilted or inverted, and should be protected from impact and violent vibration. During transportation, the packaging box must not be squeezed or damaged. After removing the packaging box, the integrity of the product should be checked immediately, and the listed items and information should be checked according to the packing list.
6.3.2 If the product is not shipped or put into use immediately, it should be placed in a warehouse. If stored in the open air, rain and moisture-proof facilities should be added. Check once every six months and re-apply anti-rust oil.
People's Republic of China
Mechanical Industry Standard
JB2478-1999
Published by the Machinery Standardization Research Institute of the Ministry of Machinery Industry Printed by the Machinery Standardization Research Institute of the Ministry of Machinery Industry (No. 2 Shouti South Road, Beijing
Format 880×1230Www.bzxZ.net
Postal Code 100044)
Sheet 1/2
Word Count 10,000
First Printing in July 1999
First Edition in July 1999
Print Quantity 1-500
Price 5.00 Yuan
99-142
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