JB/T 6040-1992 Inspection method for tightening torque of engineering machinery bolts

This standard specifies the inspection method for the tightening torque of bolts in construction machinery. This standard is applicable to the inspection of the tightening torque of bolts in construction machinery. JB/T 6040-1992 Inspection method for the tightening torque of bolts in construction machinery JB/T6040-1992 Standard download decompression password: www.bzxz.net

Pressing Machinery Ring Industry Standard of the People's Republic of China JB/T60401992
1992-05-284
1993-01-01 side
G20P xBe/
subject content and scope of application
this standard Specifies the inspection method for tightening torque of engineering machinery bolts. This standard is suitable for testing the tightening torque of bolts in construction machinery. 2 Inspection rulesWww.bzxZ.net
Inspection tools
Torque wrench, adjustable wrench, scribe needle or scribe pen. 2.2 Inspection purpose
Inspect whether the tightening torque of the tightened bolts meets the specified value. 2.3 Inspection method
2.3.1 Method 1
JB/T60401992
For the tightened bolts, use a torque wrench to slowly and evenly move the bolt head (or nut) in the tightening direction. Rotation: If necessary, use an adjustable wrench to clamp the nut (or bolt head) connected to it accordingly to prevent rotation. When the bolt head (or nut) rotates for a moment, record the value, which is the tightening torque of the bolt. || tt | Make a mark with a pen, and then loosen the bolt head (or nut); if necessary, use an adjustable wrench to clamp the nut (or bolt head) connected to it accordingly to prevent rotation; then use a torque wrench to tighten slowly in the direction Rotate the surface evenly until the marks coincide with each other, and record the value, which is the tightening torque of the bolt.
2.4 The unit of measurement value is expressed in N·m.
2.5 The above two inspection methods are equally effective. Additional notes:
This standard is proposed and administered by the Tianjin Engineering Machinery Research Institute of the Ministry of Mechanical and Electronics Industry. This standard was drafted by Meng Huijun, the main drafter of this standard, with the capital of Guanjin Forklift Research Institute.
1992-05-28this
1993-01-01
Political
60401992
880A1230
1992 onwards 3m
100044
3/8| |tt||1992A3m
http://JB.ac.cn
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