Some standard content:
ICS23.100.99
Machinery Industry Standard of the People's Republic of China
JB/T9000-1999
Fluid couplingsGeneral specification1999-06-28 Issued
National Machinery Industry Bureau
2000-01-01 Implementation
JB/T90001999
This standard is a revision of ZBJ19007-88 "Fluid couplingsGeneral specification". The main technical content has not changed. This standard replaces ZBJ19007-88 from the date of implementation. The original standard was edited during the revision. This standard was proposed and managed by Beijing Hoisting and Conveying Machinery Research Institute. The drafting unit of this standard: Beijing Hoisting and Conveying Machinery Research Institute. Drafters of this standard: Yang Naiqiao, Zhang Jingxiang. 1 Scope
Machinery Industry Standard of the People's Republic of China
Fluid couplings
General Technical Conditions
Fluid couplingsGeneral specification This standard specifies the general technical requirements and testing, packaging and other requirements for fluid couplings. JB/T9000-1999
Replaces ZBJ19007-88
This standard applies to various types of fluid couplings that use mineral oil as the working medium and comply with GB/T5837; it also applies to fluid couplings that use water-containing flame-retardant liquid or clean water as the working medium. 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 the parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1173—1995
GB/T1184—1996
GB/T 5837—1993
GB/T 13306—1991
GB/T13384—1992
JB/T4234—1999
JB/T4235— 1999 | | tt | 9004.2—1999
3 Operating environment conditions
Casting aluminum alloy
Shape and position tolerances Without tolerance values
Types and basic parameters of hydraulic couplings
General technical conditions for packaging of electromechanical products
Technical conditions for casting impellers of ordinary and torque-limited hydraulic couplings Fusible plugs for ordinary and torque-limited hydraulic couplings Factory test methods for speed-regulating hydraulic couplings and hydraulic coupling transmissions Factory test technical indicators for speed-regulating hydraulic couplings and hydraulic coupling transmissions Transmission type test method Speed regulating hydraulic coupling, hydraulic coupling transmission type test technical indicators Torque limiting hydraulic coupling factory test
Torque limiting hydraulic coupling type test
3.1 For ordinary and torque limiting hydraulic couplings, when the working medium is mineral oil and the ambient temperature is lower than -10℃, or when the working medium is water and water-containing flame-retardant liquid and the ambient temperature is not higher than 0℃, special liquids or antifreeze are required. 3.2 For speed regulating hydraulic couplings with oil supply systems that need to be started at an ambient temperature below 5℃, heating measures for the oil must be considered. 3.3 For hydraulic couplings used in severely polluted, flammable and explosive environments, special requirements of the use site should be met. 3.4 For hydraulic couplings used in outdoor open-air environments, temperature and pressure control instruments should have moisture-proof and sun-proof measures. 4 Technical requirements
4.1 The type and performance parameters of the hydraulic coupling shall comply with the provisions of GB/T5837. Approved by the State Bureau of Machinery Industry on June 28, 1999 and implemented on January 1, 2000
JB/T9000-1999
4.2 Rotating parts with input shaft speed less than or equal to 1500r/min and length to outer diameter ratio not greater than 0.25 shall be statically balanced; rotating parts with input shaft speed greater than 1500r/min and length to outer diameter ratio greater than 0.25 shall be dynamically balanced. The balancing accuracy level shall comply with the provisions of relevant standards.
4.3 The roughness of the shaft surface of the hydraulic coupling sealed by the skeleton rubber oil seal shall be ground to an R value of 0.8μm and then polished; the roughness R value of the flange sealing surface in contact with the O-ring shall not be greater than 6.3um. 4.4 The torque-limited hydraulic couplings used in coal mines with clean water or water-containing flame-retardant liquid as the working medium shall have overpressure protection. 5 Requirements for parts
5.1 The fusible plugs of ordinary and torque-limited hydraulic couplings shall comply with the provisions of JB/T4235. The fusible plugs used in hydraulic couplings with clean water or water-containing flame-retardant liquid as the working medium in coal mines may have their operating temperature specified separately according to the usage. 5.2 The impeller of the hydraulic coupling shall comply with the provisions of JB/T4234 or relevant standards. 5.3 The purchased parts and accessories used in the hydraulic coupling must have a product certificate and can only be used for assembly after being accepted by the quality inspection department. The ○-type sealing ring and the skeleton rubber oil seal must be strictly inspected under a magnifying glass of not less than 5 times. 5.4 The mechanical properties of the cast aluminum material shall not be lower than those specified in ZL104 of GB/T1173. The blades of cast aluminum impellers shall not have defects such as pores, slag holes, sand holes, cracks, etc.
5.5 Forgings shall not have defects such as interlayer, folding, cracks, forging scratches, scars, overburning and slag inclusions. Local defects caused by removing oxide scales, etc. shall not be greater than the deviation range of the forging size. 5.6 When spot welding is performed on welded parts during assembly, the spot welding part shall be part of the weld and shall not exceed the height and width of the weld. 5.7 The effective diameter D of the cast and welded impeller shall comply with the provisions of GB/T5837, and its dimensional accuracy shall comply with the provisions of Table 1. Table 1
Effective diameter D
Limit deviation
125~250
>250~500
5.8 The dimensional accuracy of the effective diameter D of the forged steel impeller shall comply with the provisions of the relevant standards>500~1000
5.9 The surface roughness of the working chamber of the cast, forged and welded impeller shall comply with the provisions of Table 2. Table 2
Processing method
Surface roughness of impeller working chamber R
>1 000
5.10 Cast impellers with input shaft speed greater than 3000r/min and effective diameter greater than 400mm should be shot peened. 5.11 The shape and position tolerances of the impeller and the main shaft that are not specified should comply with the L grade in GB/T1184. 5.12 The sharp edges, corners, and screw holes that are not specified on the impeller and the main shaft should have chamfers of no more than 0.5×45° or fillets with a radius of no more than 0.5mm, and burrs should be removed.
5.13 The same parts of the same model of hydraulic components should be interchangeable, but the parts with dynamic balancing accuracy requirements must maintain the mutual matching condition of the product leaving the factory and shall not be replaced at will.
5.14 Parts can be put into storage only after they have passed the inspection. Parts that are deformed, broken, scratched, rusted, etc. due to improper storage or transportation and affect product quality shall not be used for assembly.
JB/T9000-1999
5.15 All parts should be cleared of burrs, chips, oil stains, rust, and carefully cleaned before assembly. 5.16 There should be no residual sand or debris in the inner cavity of the oil pipe fittings, and the pipe fittings should not have dents, flattening, cracks, and other damage marks. 6 Working medium
6.1 The oil of the working medium of the hydraulic coupling should not cause metal to rust. No. 6 hydraulic transmission oil or turbine oil should be used. The flame-retardant liquid used in special occasions must meet the use requirements of the hydraulic coupling and be formally identified by the relevant departments. 6.2 For hydraulic couplings that use clean water or water-containing flame-retardant liquids as the working medium, the components in the cavity must have anti-corrosion and anti-rust measures. 6.3 The oil filter accuracy of all types of hydraulic couplings should not be less than 100μm. The oil filter accuracy of speed-regulating hydraulic couplings with sliding bearings should not be less than 25μm.
7 Installation and operating conditions
7.1 When installing the speed-regulating hydraulic coupling and hydraulic coupling transmission device, the base plate must be placed on a steel base with a larger contact surface on the foundation to prevent the high-frequency micro-amplitude vibration of the hydraulic components from causing the foundation to be worn, thereby reducing the axis elevation and affecting the operating accuracy. 7.2 The highest oil level of the cooler must be 0.5m lower than the center of the hydraulic coupling inlet and outlet flanges to ensure that the oil does not flow back into the box. 7.3 All hydraulic components and parts with a mass exceeding 25kg must be equipped with lifting devices for lifting during installation or removal. 7.4 For ordinary and torque-limited hydraulic couplings, special disassembly and assembly tools must be available. Metal hammers must not be used for impact during disassembly and assembly. Disassembly and assembly can only be carried out by gently pushing and pulling. 8 Tests
8.1 Factory test
8.1.1 The factory test shall be carried out by the inspection department of the manufacturer. The test items and methods shall be carried out in accordance with the provisions of JB/T4238.1~4238.4 or JB/T9004.1~9004.2
8.1.2 For hydraulic components with special requirements, the test conditions and rules shall be jointly agreed upon by the design, manufacturing and purchaser units. 8.1.3 After the factory test of the speed regulating hydraulic coupling and hydraulic coupling transmission device, the oil filter element should be carefully cleaned. 8.2 Type test
8.2.1 Type test refers to the test to fully verify the quality and performance of hydraulic components to identify whether they meet the standards. Its test technical indicators and methods shall comply with the provisions of JB/T4238.1~4238.4 or JB/T9004.1~9004.2. 8.2.2 The test method for the performance test of the hydraulic coupling shall be selected according to Table 3. Table 3
Test method
Torque-limited type (rated power)
Speed-regulating type (rated power)
Full power test
≤100
Speed reduction test or industrial test
>75~500
>100~1000
Industrial test
>1 000
8.2.3 The effective diameter used to calculate the moment coefficient of the pump wheel according to the test data shall be the nominal size and shall not be calculated based on the actual size. 8.2.4 For the finalized hydraulic components, if there are unqualified items in the type test sampling, the items shall be retested with double the number; if they are still unqualified, the type test of the hydraulic component shall be determined as unqualified. 9 Storage, marking and packaging
9.1 For hydraulic components that have passed the test, all exposed oil ports should be sealed with oil-resistant plugs (paper, cotton yarn, wooden plugs, etc. are prohibited). JB/T9000—1999
9.2 For hydraulic components that have passed the test, the exposed non-machined surfaces of cast aluminum of ordinary and torque-limited hydraulic couplings should be sprayed with silver glaze; the exposed non-machined surfaces of speed-regulating hydraulic couplings and hydraulic coupling transmission devices should be coated with a protective layer. 9.3 Product labels should be beautiful and generous, with clear lines and characters, and should comply with the provisions of GBT13306. 9.4 The labels should be installed upright and firmly on the obvious parts of the components. 9.5 The content of the label shall at least include:
a) hydraulic component name and model (preferably with registered trademark); b) main parameters of hydraulic component (input speed, rated power); c) for hydraulic components with steering requirements, a red arrow shall be indicated on a conspicuous part of the shell (cast or make a steering label); d) manufacturer's name;
e) year, month and factory number.
9.6 The following documents shall be attached when hydraulic components are packed out of the factory: a) product certificate;
b) packing list;
c) hydraulic component installation and use instructions, including: hydraulic component name, model, appearance drawing (installation, connection dimensions), structural diagram, main technical indicators, installation and use, maintenance requirements and methods, spare parts list and auxiliary device model, specifications and requirements, etc.
9.7 When packing, the screws, O-rings and other accessories specified should be packed in the same box as the hydraulic components. 9.8 For hydraulic components with exposed threads, keyways and holes, anti-rust oil should be applied to the threads, keyways and holes during packaging. The anti-rust protection should be effective for at least 6 months after delivery.
9.9 The packaging materials should be moisture-proof, ensure that the product is not damaged or corroded, and comply with the provisions of GB/T13384. The outer wall of the packing box should be clearly marked with the following signs: 9.10
a) Name and quantity of hydraulic components;
b) Mass (kg): net, gross;
c) Box size (length × width × height) (cm);
d) Manufacturer's name;
e) Departure station (port) and shipping unit;
f) Arrival station (port) and consignee;
g) Precautions during transportation;
h) Year, month and day of packing.
People's Republic of China
Mechanical Industry Standard
Fluid Coupling
General Technical Conditions
JB/T9000-1999
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Postal Code 100044)
Sheet 1/2www.bzxz.net
Word Count 10,000
First Edition in November 1999 First Printing in November 1999 Price RMB 5.00
Print Quantity 1-500
99-1057
Mechanical Industry Standard Service Network: http://wwwJB.ac.cn66619 The packaging materials should be moisture-proof, ensure that the product is not damaged or corroded, and comply with the provisions of GB/T13384. The outer wall of the packaging box should be clearly marked with the following signs: 9.10
a) Name and quantity of hydraulic components;
b) Mass (kg): net, gross;
c) Box size (length × width × height) (cm);
d) Manufacturer's name;
e) Departure station (port) and shipping unit;
f) Arrival station (port) and consignee;
g) Precautions during transportation;
h) Year, month and day of packing.
People's Republic of China
Mechanical Industry Standard
Fluid Coupling
General Technical Conditions
JB/T9000-1999
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Postal Code 100044)
Sheet 1/2
Word Count 10,000
First Edition in November 1999 First Printing in November 1999 Price RMB 5.00
Print Quantity 1-500
99-1057
Mechanical Industry Standard Service Network: http://wwwJB.ac.cn66619 The packaging materials should be moisture-proof, ensure that the product is not damaged or corroded, and comply with the provisions of GB/T13384. The outer wall of the packaging box should be clearly marked with the following signs: 9.10
a) Name and quantity of hydraulic components;
b) Mass (kg): net, gross;
c) Box size (length × width × height) (cm);
d) Manufacturer's name;
e) Departure station (port) and shipping unit;
f) Arrival station (port) and consignee;
g) Precautions during transportation;
h) Year, month and day of packing.
People's Republic of China
Mechanical Industry Standard
Fluid Coupling
General Technical Conditions
JB/T9000-1999
Published and issued by the China Academy of Mechanical Science
Printed by the China Academy of Mechanical Science
(No. 2 Shouti South Road, Beijing
Format 880×1230
Postal Code 100044)
Sheet 1/2
Word Count 10,000
First Edition in November 1999 First Printing in November 1999 Price RMB 5.00
Print Quantity 1-500
99-1057
Mechanical Industry Standard Service Network: http://wwwJB.ac.cn6661
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