How does an overhead crane move?
Time:
2021-09-02 16:12
Overhead cranes are hoisting equipment that is horizontally placed over workshops, warehouses and stockyards for material hoisting. Because its two ends sit on tall concrete columns or metal supports, it is shaped like a bridge. The bridge of the bridge crane runs longitudinally along the track laid on the elevated on both sides, which can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is a kind of hoisting machinery with a wide range of use and a large number.
The hoisting mechanism of an overhead crane consists of a hoisting motor, a reducer, a reel, a brake, etc. The hoisting motor is connected with the reducer through the coupling, the brake wheel, the output shaft of the reducer is connected with the reel of the winding wire rope, and the other end of the wire rope is equipped with a hook. As the reel spins, the hook accompanies the wire rope in the reel. The rise or fall of the upper part will entangle or release. For cranes with a lifting capacity of 15t and above, there are two sets of lifting mechanisms, namely the main hook and the auxiliary hook.
As the tower wheel rotates, the weight of the overhead crane moves up and down on the hook. During this operation, the car moves left and right in the width direction of the plant, and can move back and forth in the longitudinal direction of the plant together with the cart. In this way, the movement of heavy objects in vertical, horizontal and vertical directions can be realized, and the heavy objects can be moved to any position in the workshop to complete lifting and transportation tasks.
The control room of an overhead crane is somewhat of a nacelle for controlling the crane, also known as the cab. There are large and small car transfer mechanism control devices, lifting mechanism control devices and crane protection devices in the control room. The control room is usually fixed at one end of the main beam, and a few control rooms are installed under the trolley to move with the trolley. Above the control room, there is a hatch leading to the walkway, which allows maintenance personnel to access the mechanical and electrical equipment of the car, large and small.
Motion form of bridge crane
1. The crane is driven by the trolley motor and moves longitudinally forward and backward along both sides of the factory workshop.
2. The trolley and the lifting mechanism on the main beam of the trolley are driven by the trolley motor to move laterally left and right along the main beam track of the bridge.
3. The lifting motor (main hook, auxiliary hook) drives the heavy object to carry out vertical lifting movement.
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2021-09-15
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