Small Crane Operation - Stable Word
Apr 27, 2018

"Steady" mainly refers to the operation of an object when the small crane is lifting an object, keeping it in place during the process of positioning, and avoiding impact, shaking and the like. This is also a manifestation of a small crane driver technology.

The sign of judging whether the operation is stable is the steady state of the hook. The smooth operation of the small crane is related to the coordinated action of the various mechanisms of the small crane.

First of all, the start of the small crane should be stable, so as to start from the low gear and wait for the hook to move, then gradually accelerate from the low gear to the high gear. At this time, the hook and the hanger can smoothly transition from the stationary state to the start state, and then smoothly transition from the low speed operation to the high speed operation.

Secondly, the braking should be stable. There is a braking phase during the lifting of the object from high speed operation to stop operation. The crane driver should reduce the engine speed in the preparatory stage of braking to avoid emergency braking under high engine speed. If the emergency braking is performed at a high speed, the strong braking of the hoisting mechanism will also cause the accelerated wear of the brake friction elements, the increased distance between the hooks, and even the brake failure due to the high heat of the brake wheels and brake shoes of the small crane. Heavy objects fell to the ground, causing accidents.

In addition to paying attention to the smooth operation of the start-up and braking phases, care must be taken to avoid swinging the hooks and hanging objects in the air.

The basic principle is: When the hook swings to the maximum amplitude and has not yet slid back, the crane should use the arm to follow up and call it "find hook". The trick of "finding hooks" is that the distance and speed of follow-up should be just right. The speed of follow-up must not be too slow or too fast, or it will be counterproductive. In this way, the hooks and hangings of the small cranes can be relatively stable through repeated operations.

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