This standard specifies the type, basic parameters, main dimensions and technical conditions of ball joint universal couplings. The couplings specified in this standard are suitable for connecting two transmission shaft systems with different axes, with a nominal torque of 6.3~1120N·m; the axis angle α≤40°. JB/T 6139-1992 Ball Joint Universal Couplings JB/T6139-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T6139-1992
Ball Joint Universal Coupling
Published on June 9, 1992
Implementation by the Ministry of Machinery and Electronics Industry of the People's Republic of China on January 1, 1993
Mechanical Industry Standard of the People's Republic of China
Ball Joint Universal Coupling
JB/T6139—1992
This standard specifies the type, basic parameters, main dimensions and technical conditions of ball joint universal couplings (hereinafter referred to as couplings). The coupling specified in this standard is suitable for connecting two transmission shaft systems with different axes. Its nominal torque is 6.3~1120N·m; the axis angle a≤40°
Referenced standards
GB3852
GB12458
GB3078
GB4879
GB 117
Types and dimensions of coupling shaft holes and keyways
Classification of mechanical couplings
Technical conditions for high-quality structural steel cold-drawn steel materials
Rust-proof packaging
Pictorial symbols for packaging, storage and transportation
Taper pin
3Types, basic parameters and main dimensions
The types, basic parameters and main dimensions of WJ single-ball joint universal couplings shall comply with the requirements of Figure 1 and Table 1. Marking
1-Outer sleeve:
Approved by the Ministry of Machinery and Electronics Industry on June 9, 19922-Inner sleeve;
3-Countersunk rivet:
4-Ear claw:
5-Hollow ball
Implemented on January 1, 1993
JB/T 61391992
Shaft hole size
Cylindrical hole
Square hole
3.2The type, basic parameters and main dimensions of WJS double ball joint universal coupling shall conform to the provisions of Figure 2 and Table 2. Marking
Moment of inertia
1-Outer sleeve: 2-Inner sleeve: 3-Countersunk rivet: 4-Ear claw; 5-Hollow ball; 6-Middle outer sleeve ：7—middle inner sleeve: 8—long ear claw Table 2
6139—1992
Shaft hole size
Cylindrical hole
Square hole
Moment of inertia
Keyway type conforms to the provisions of GB3852
The shaft hole types of couplings include cylindrical holes, cylindrical holes with keyways and square holes, which can be combined arbitrarily.
Type A.
3.4 ​​Marking method and examples
3.4.1 Marking method
Keyway type code of driving end
Coupling model and name
Keyway type code of driven end
2 Marking example:
Diameter of driving end shaft hole (square hole S)
Length of driving end shaft hole
Standard number
Length of driven end shaft hole
Diameter of driven end shaft hole Diameter (square hole S)
WJ4 single ball universal coupling, using cylindrical hole and cylindrical hole with keyway Example 1
Driving end: d=12mm, L,=13mm
Driven end: A-type keyway, d=12mm, L,=13mm Marked as:
WJ4 coupling 12×13
A12×13
JB/T6139—92
Example 2 WJ8 Single ball joint universal coupling,
using cylindrical hole and square hole
driving end: d=20mm, L,=23mm
driven end: S=19mm, L,=23mm
marked as:
WJ8 coupling
20×23
S19×23
6139-1992
JB/T6139—92||t t||WJ11 single ball joint universal coupling, both ends are cylindrical holes d=30mm, L,=34mm
Marked as: WJ11 coupling 30×34
Technical requirements
JB/T6139—92
The coupling shall comply with the provisions of this standard and be manufactured in accordance with the drawings and technical documents approved by the prescribed procedures. 4.1
The coupling shall rotate flexibly after assembly, and the surfaces at both ends shall be flat and smooth. 4.2
: The hollow ball material shall be made of 35 steel with mechanical properties not lower than those specified in GB3078. The verticality tolerance of the axes of the two intersecting holes of the hollow ball is 4.3
@0.06mm.
4.4The material of the ear claw and long ear claw shall be made of 45 steel with mechanical properties not lower than those specified in GB3078. The symmetry tolerance of the two sides of the ear claw is 0.02mm.
The runout tolerance of the coupling axis shall comply with the provisions of Table 3. Table 3
Shaft diameter d
Axis runout
When the coupling and the shaft extension are connected by a taper pin, the taper pin shall comply with the provisions of GB117, and the position of the taper hole shall comply with the provisions of Figure 3.
JB/T6139-1992
4.7 When the coupling works in a dirty environment, a protective cover must be added. 4.8 When the coupling runs continuously for more than 24 hours, No. 40 mechanical lubricating oil should be added. 5 Test methods and inspection rules
5.1 Test methods
5.1.1 Coupling load operation test. The basic parameters and main dimensions of the test coupling shall comply with the provisions of Tables 1 and 2. 5.1.2 After the coupling is assembled, it can be rotated flexibly by hand or ball joint. The coupling runout shall be measured by the method shown in Figure 4, and its value shall comply with the provisions of Table 3. 5.1.3
5.2 Inspection rules
Type inspection shall comply with the provisions of Article 5.1.
5.2.2 Factory inspection
Comply with the provisions of Articles 5.1.2 and 5.1.3.
Main parts shall comply with the provisions of Articles 4.3 and 4.4. b.
Micrometer
a=L/2+10mm
5.2.3Each coupling shall be inspected and qualified by the quality inspection department of the manufacturer, and shall be accompanied by a product quality certificate before it can be shipped. 5
Marking, packaging, storage
6.1 Marking
6139-1992
Print the model markings according to the parts shown in Figures 1 and 2. The certificate should include:
Coupling model:
Manufacturer name;
Inspection pass mark:
Factory date.
6.2 Packaging
6.2.1 After cleaning, the coupling should be rust-proofed in accordance with the provisions of GB4879. 2 The markings on the outer packaging of the coupling should comply with the provisions of GB191. 6.2.2
6.3 Storage
The coupling should be placed in a dry environment indoors to avoid contact with acids, alkalis, organic solvents and other substances. 6
6139-1992
Appendix A
Instructions for selecting ball-jointed universal couplings
(reference)
Select couplings based on speed, power and torque with reference to Figure A1. The curve in Figure A1 is a single-direction rotation, angle not greater than 10°, uniform load, and continuous operation of no more than 1h. The transmission capacity of a double-ball-jointed universal coupling is slightly lower. At other angles, use the coefficients marked in the table for calculation. When subjected to periodic loads or alternating changes in the direction of rotation, a coupling with a cylindrical hole or square hole with a keyway should be selected. A2
Selection example
Given: power 3.31kW, speed 200r/min, angle 10°, find the intersection of the horizontal line of 3.3IkW and the vertical line of 200r/min as P, and choose WJ10 coupling. a.
If the angle needs to be changed to 20°, it can be concluded from Figure A1 that WJ10 coupling transmits 3.31kWx0.75 (coefficient) = 2.48kW at 200r/min. The selected WJ10 coupling is too small, and WJ12 coupling should be selected to transmit 4.78x0.75 = 3.58kW torque. Example 2Given: speed 200r/min, torque 157N+m, find the vertical line of 200r/min, and the intersection of the oblique line of 157N·m as P, and choose WJ10 coupling. Example 3 Given: speed 200r/min, torque 177N·m, angle 20° In order to use the selection table, the angle should be converted to 10°, so the torque value is divided by the coefficient at 20°, 1770.75=236N·m, the intersection of the vertical line of 200r/min and the oblique line of 236N·m determines the selection of WJ12 coupling. 7
JB/T 6139—1992
1000 3250 2500 2000 1600
1200100X
60 70 80 90 100
Rate r/min
Torsion angle
0600.700800*900
Chart value×1.25
Chart value×1bzxz.net
Chart value×0.75
Chart value×0.6
Chart value×0.45
5006007008009001000
JB/T6139-1992
Appendix B
Installation requirements for ball joint universal coupling
(reference part)
B1 During installation, the supporting shaft should be close to the coupling, see Figure B1. To achieve equal angular velocity rotation, a double ball joint universal coupling or a combination of two single ball joint universal couplings and an intermediate shaft should be installed B2
, and the angles at both ends of the intermediate shaft should be equal. Two single ball joint universal couplings
One double ball joint universal coupling
B3 When supported by bearings, the angle between the coupling axis and the driving shaft axis should be equal to the angle between the coupling axis and the driven shaft axis. See Figure B2.
Incorrect (not equal to β)
Installation should ensure that the driving shaft and the driven shaft are parallel to each other or symmetrically misaligned with the intermediate shaft; when misaligned, the angles should also remain equal. See Figure B3. B4
Axis α is parallel to '
Incorrect
Axis α is not parallel to α"
When using two single-ball joint universal couplings, the output and input articulated ears must be installed in the same plane. See Figure B4. Correct
Incorrect
Additional notes:
6139-1992
This standard was proposed and coordinated by the Xi'an Heavy Machinery Research Institute of the Ministry of Machinery and Electronics Industry. This standard was drafted by the Luoyang Mining Machinery Factory of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Gao Song and Li Qilin.
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