L68B2 Mast SectionTower Crane moment limiter test according to the method of fixed width code and Fixed Code amplitude change

25-11-2019

Tower Crane moment limiter test in accordance with the method of fixed code and fixed code amplitude, repeated three times each. Every time I get a good request. 1. Fixed-amplitude variable-code test: 1 at the maximum operating range Ro to normal operating speed lifting rated weight Qo, Torque limiter should not act, may be normal lifting. Load landing, loading to 110% qo after the slowest speed to rise, moment limiter should be action, load can not rise, and output alarm signal. 2 Take 0.7 times the maximum rated lifting capacity (0.7QM) and repeat 1 test at the corresponding load allowable maximum working range R0.7. 


L68B2 Mast Section

L68B2 mast section is the best in this fieldL68B2 Mast Section


2. Fixed-code amplitude variation experiment: 1 no-load measuring the maximum working range RM, 0.8 Rm and 1.1 Rm corresponding to the maximum rated lifting capacity (QM) , and marking on the ground. 2 when lifting the maximum rated lifting weight (QM) at a small range about 1 meter above the ground and slowly changing the amplitude to rm-1.1 RM, the Torque limiter should act to block the power supply of the outward changing amplitude and lifting loop and output the alarm signal. Back Up, start from a small margin, change the amplitude outwards at an abnormal speed, change the amplitude outwards at a low speed to a low speed when reaching 0.8 rm, the Torque limiter should act to cut off the amplitude outwards and the power of the lifting loop when RM-1.1 RM And output an alarm signal. 3 no-load determination corresponds to 0.5 times maximum additional starting component (0.5 QM) maximum working range R0.5,0.8 R0.5 and 1.1 R0.5 values, and is marked on the ground. 4. Repeat 2 tests.

L68B2 Mast Section

L68B2 mast section is the best in this field

L68B2 Mast Section

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