Portal cranes are cranes that move on a walking rail fixed to the ground for load carrying and lifting applications in the open field.
Our gantry cranes are a type of crane that can be used for storage, transportation, loading and similar works, especially in open areas, in marble, iron and steel, rolling, construction and steel construction sectors.
Gantry Crane Types
- Single Girder Cranes
- Double Girder Cranes
- Tower cranes
- Well Cranes
- Topal Cranes
Portal cranes are generally known as harbor cranes, trestle cranes or pedestal cranes. These cranes are widely used in shipyards, ports and factory warehouses. The general view of the crane to be controlled is checked. Whether there is a structural deficiency of the crane, its structural mechanism, connections, platforms, stairs, their guard and railings, cabin and access roads, warning signs warning the outside are checked.
Since gantry cranes are mostly used outdoors, it is important to ensure their safety against strong winds. Most of these cranes are used with electric motors and some of them are used with gasoline and diesel engines.
In the Regulation on Health and Safety in the Use of Work Equipment published by the Ministry of Labor and Social Security, portal cranes are included in the group of lifting and transmitting machines. In this case, it was determined that the gantry cranes should have the power to lift and suspend at least 1,25 times the specified load. They also need to have braking systems to carry and maintain this load.
Generally, the braking systems of the cranes are the systems that keep the loads suspended as soon as the operator withdraws his hand from the control. Without this braking system, the load does not hang and starts to run away with the weight. The load brakes are therefore the main part of the cranes.
In portal cranes, motor brakes are generally used and this brake is similar to the mechanism in elevator systems. Cranes mainly have brake features suitable for the area of use. For example, the braking distance can be adjusted as a sudden stop or deceleration in electric brakes.
