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The working principle of large bridge crane

March 11, 2021

Latest company news about The working principle of large bridge crane

The bridge crane is a lifting equipment that is horizontally framed over the workshop, warehouse and material yard for material lifting. Because its two ends are located on tall concrete columns or metal supports, it is shaped like a bridge. The bridge frame of the bridge crane runs longitudinally along the tracks laid on the elevated sides on both sides, which can make full use of the space under the bridge frame to lift materials without being hindered by ground equipment. It is a hoisting machinery with a wide range of applications and a large number.


bridge crane

The lifting mechanism of the overhead crane is composed of a lifting motor, a reducer, a reel, a brake, etc. The lifting motor is connected with the reducer through a coupling, and the brake wheel and the output shaft of the reducer are connected with the reel of the winding wire rope, and the other end of the wire rope is equipped with a hook. When the reel rotates, the hook will accompany the wire rope in the reel. The rising or falling of the upper part will become entangled or released. 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.

With the rotation of the tower wheel, the weight of the bridge crane moves up and down on the hook. During this operation, the car moves left and right in the width direction of the workshop, and can move back and forth in the length direction of the workshop together with the cart. In this way, the heavy objects can be moved in the vertical, horizontal and vertical directions, and the heavy objects can be moved to any position in the workshop to complete the lifting and transportation tasks.

The control room of the overhead crane is to some extent the engine room, which is used to control 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 sidewalk, which can be used by maintenance personnel, regardless of the size of the car's mechanical and electrical equipment.



The movement form of bridge crane

(1) The crane is driven by the trolley motor and moves longitudinally back and forth 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 along the main beam track of the bridge.

(3) The lifting motor (main hook, auxiliary hook) drives the weight to move vertically.

The above is the information shared by the editor of Fanwo Crane, I hope it will be helpful to you. If you want to learn more about Fanwo cranes, Fanwo electric hoists, Fanwo crane maintenance and other related information, please inquire, we will serve you wholeheartedly, thank you for your support!

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