The reasons and solutions of the semi - gate crane

The semi - door crane is a crane with electric hoist as lifting mechanism, and the electric hoist is suspended on the steel frame under the main beam.

There are a half gantry crane users who find that when the crane is in use, there is a problem of lowering the hook, which is the usual slip hook fault. What is the reason for the half portal crane slip hook?

Crane slip hook is generally caused by brake cannot effectively work, for as a lifting mechanism of electric hoist, because it is not running, brake lock automatically, if there is a slip hook, it is because of the motor brake ring didn't adjust good, cannot effectively braking, the crane hook slide.

For time use of a long crane, it may also be because brake pads wear serious.

When the semi - gate crane has the slip hook situation, we should adjust timely to avoid causing more serious fault or production accidents.

The solution of the lower half gantry crane slip is introduced below

1. Check whether the brake ring of electric hoist is seriously damaged, and if it is caused by the serious wear and tear caused by the slip hook fault, it is important to change the brake pad in time.

2. Adjust the gap between the brake ring and the static ring between the cone motor and increase the braking torque.

3. Check the brake, adjust the working length of the main spring, tighten the main spring and increase the braking torque.

When the semi - gate crane has a slip hook, it should find the reason of the slip hook, and solve the problem in time according to the cause of the fault.

Also need crane user attention is, when the semi gantry crane overload, may also cause the loss of hook, which is why it is forbidden to the cause of the overload, in order to prevent this kind of situation, the crane will be installed the overload limiter assure crane safe operation.