Supporting Legs Of Gantry Crane

Outriggers are suitable for gantry cranes, among which gantry cranes are divided into three types according to the configuration of outriggers: single outrigger, double outrigger and high and low outrigger.

The single-leg gantry crane is called a semi-gantry crane, and the trolley traveling mechanism on the side without outrigger runs along the special rails for cranes such as workshops and warehouses or the special viaduct rails.

Cranes with high and low outriggers are specially designed to suit the terrain requirements.

When the leg pressure of the outriggers on both sides of the gantry crane is very different, and the running trolleys with different layers are required, the scheme of high and low outriggers can also be used.

2. Classification of outrigger properties：

Gantry cranes are divided into two types according to the nature of the outriggers: space rigid outriggers and plane flexible outriggers.

The inter-rigid outriggers have good spatial rigidity, which can not only bear the horizontal load in the plane of the outrigger (the horizontal load of the crane), but also the horizontal load in the plane of the gantry (the vertical horizontal load of the crane);

The rigidity of the flexible outrigger in the plane of the gantry (perpendicular to the plane of the outrigger) is very poor, so it can only bear the horizontal load in the plane of the outrigger.

Long-span gantry cranes often use a rigid outrigger and a flexible outrigger to prevent the rail from being stuck due to temperature changes.

3. Outrigger Type

Gantry cranes are divided according to the type of outriggers: there are L-shaped, C-shaped, O-shaped and U-shaped open-type outriggers such as box-shaped; Wait.

L-shaped and C-shaped outriggers are mainly used in single main girder gantry cranes, O-shaped and U-shaped outriggers are used in double-girder gantry cranes, and U-shaped outriggers are widely used in rubber-tired container gantry cranes.

4. Use the environment

5. The role of outriggers

(1) Supporting role

Outriggers are the key to supporting the operation of the gantry crane. There are pulleys under the outriggers. During the operation, the rails are placed in the operation area, and the gantry crane can be driven to move freely in the operation area, and the position of the gantry crane can be placed according to the needs. Gantry crane rental.

(2) Ensure safety and stability

When the gantry is hung on the gantry, the outriggers keep the lifting safe and stable.

Outriggers are the foundation to ensure that the gantry crane can stand stably. If there is a problem with the outriggers, it is very easy to cause the whole gantry crane to be unbalanced and overturned.

As the ground support and walking support of the gantry crane, when the gantry crane is working, the outriggers can not only bear the self-weight of the upper structure such as the main beam, but also carry the corresponding lifting load.

(3) Improve the lifting characteristics of the whole machine

Gantry crane is also called gantry crane, which can also be divided into single girder gantry crane and double girder gantry crane.

The former has two legs and the latter has four legs.

6. Transportation

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