Large hoist overload jump stop restart method

Large hoist overload 2019 - jump stop restart method 05 - 19 Wang Zhanguang ( Jiaozuo strong cement company) Hoist for overload stop jumping phenomenon is more common, but large hoist overload caused by measurement is out of control, or other jump stop after the restart the often difficult, or even cause an accident, so large hoist overload after the jump stop, need to take some necessary measures. First of all, the hoist overload after the jump stop, must conduct a comprehensive analysis of examination, examination content includes: detecting motor is normal; Whether the coupler bearing binding, oil level is normal, etc; The upper and lower bearing is normal; Whether middle casing, bracket convex drum deformation, etc. After the analysis of non-return device is normal, open the upper and lower manhole door bucket, traction for inspection, determine the cause of the overload. Under normal circumstances, the overload of the following reasons: lack of tension, traction of a wandering chassis, fights and shell friction; Bearing damage stuck; Transmission failure stuck; Material too much, the tail aggregate, resulting in resistance increases, at the same time due to the material level is too high, cause the material bucket full of compaction, increase bulk density, and so on. Overload causes after check to make sure to prepare the construction plan for processing according to the reasons, as follows. 1, tension caused by insufficient knock help hang bottle processing upon confirmation of non-return device under the condition of reliable, clean up the tail aggregate, lift the tail sprocket, pulling a reset to the normal position, slow down transmission, through tensioning method to adjust the traction parts to its normal position. 2, bearing damage card die processing bearing damage death occur more commonly in the tail, can promote the sprocket, open the bearing replacement bearings, sprockets, under pressure after again through slow drive or main drive traction adjustment to its normal position. 3, transmission fault caused by the jump stop processing transmission failure caused by overload jump stop in bearing, most caused by a bearing was jammed, the need to collapse of reducer, before the disintegration of reducer, must adopt measures to prevent reverse. Hoist non-return device than it in the reducer high speed end ( If the loading on the hoist chain wheel shaft there is no issue) , so before the collapse of the reducer must prevent hoist reversals, pour method available chain hoist pick-up lateral traction, and auxiliary measures according to the situation, in order to guard against chain failure risk, to ensure safety, speed reducer maintenance after processing, can be slowly loosen chain, non-return device for inspection, if no problem, then clean up the scene and trial production. If the coupler fault, for the repair. 4, the processing of incoming overload caused by too much jump stop in ruled out other causes overload jump stop for aggregate and confirm the overload after the jump stop, slow drive to leave the material can be opened, empty, in the slow transmission can't open the following steps can be used when processing. The first step: add coupler level to remove the material inside the casing, beside the machine starting main transmission at the same time, the material away empty. Pay attention to when the main drive to pull, to immediately stop drive slow. Step 2: if the first step is to start up, can widen the main motor soft start, according to the first step method, open the main transmission will move empty materials. Step 3: the former two methods still doesn't work, you must open hole, the middle of the hoisting machine shell with high-pressure gas blow out material inside the hopper, until to hoist up. Must be open during the dust collecting equipment, avoid pollution incident, homework personnel must be security measures in place at the same time.