The main part of the two-speed electric hoist and instructions
The main part of the two-speed electric wire rope hoist include: reducer, running institutions, roll device, hook device, couplings, flexible cables current into the stopper.
Newly installed or installed after dismantling the two-speed electric hoist model MD1, First empty commissioning several times. But not before the installation is complete, avoid power-commissioning.
Static load test should be carried out to 125% of rated load, lifting off the ground about 100 mm, 10 minutes before the normal use of two-speed electric hoist, check normal.
Dynamic load test is based on the weight of the load rating for repeatedly lift and move around test after test to check the mechanical transmission parts, electrical parts and connected parts is normal.
The two-speed electric hoist in use, the absolute prohibition does not allow the environment, and more than the rated load and hourly Rated closing times (120 times) case.
Installation, commissioning and maintenance must strictly check limit device is flexible and reliable, when hook up to the upper limit position, the hook shell to roll the shell of the distance must be greater than 50mm (10t, 16t, 20t must be greater than 120mm ). When the hook down to the lower limit position, should ensure the the reel wire rope safety circle, the the effective security ring must be more than 2 laps.
6 are not allowed at the same time press the two flashlight door button electric hoist movement in the opposite direction.
Work after must be the power of the total gate opened, cut off the power supply.
8 two-speed electric hoist manipulated by hand, the manipulator should fully grasp the safety procedures, non-crooked pull oblique hanging.
Use by specialized personnel must regularly electric hoist inspection found that the failure to take timely measures, and carefully recorded.
10 decline in the amount of two-speed electric hoist brake adjustment, should ensure that the rated load, the amount of braking decline the S ≤ V/100 (V liter from the stable load in the next minute distance).
11 two-speed electric hoist wire ropes end-of-life criteria: wire rope inspection and scrap the standard press CB/T5972-1986 "lifting machinery wire rope inspection and retirement of practical norms" execution.
12 two-speed electric hoist use must keep enough oil and lubricants clean, and should not contain impurities and dirt.
13. Should use a stiff brush or wooden small piece of rope oil and non-oil hand directly to the working rope.
14 two-speed electric hoist does not work, does not allow heavy objects suspended in the air, to prevent parts from permanent deformation.
15. Should pay particular attention to the use of wearing parts. In the process, if we find fault, should immediately cut off the main power supply.
16.10 to 20 tons gourd in continuous operation for a long time, the automatic power-off phenomenon, which is a motor overheating protection function can decline over a period of time, you can continue to work until the motor has cooled down.