Lifts are used to deliver heavy loads to any height. This equipment facilitates human labor and is divided into types of:
- cranked;
- scissor;
- telescopic;
- mast.
Let’s talk in more detail about the first two species, because it’s not considered to be the most popular and widespread.
Scissor. It is called so because its lifting system, consisting of levers and hydraulic cylinders, is very similar in design to scissors. The system of cylinders and levers is a support for the platform on which the load to be lifted is installed. For a number of works involving only vertical movement, it is necessary , for horizontal - cranked.
The scissor lift has small dimensions, so it easily copes with work in hard to reach places. An interesting fact: the principle of operation of the scissor lift is used in the laptop keyboard.
This mobile device is actively used on small construction sites, in warehouses in other places where it is necessary to lift a heavy load to a great height. This equipment is moved using a chassis, thanks to which the maneuverability of the lift increases. To use this equipment, a maximum of 2 people is required. If a foreign object gets under the platform, the lift instantly stops working, but does not break. It is equipped with limiters of the maximum lifting height, which is extremely important for the smooth operation of hydraulics.
There is engine protection and the possibility of a smooth stop, a speed controller for the hydraulic system. The scissor lift is cheaper than the articulated because of the simple mechanism. Some models are capable of lifting up to 10 tons of cargo to a height of up to twenty-five meters. The scope of this kind of equipment is where another method of vertical movement of the load is unrealistic. It is used to lift both goods and employees of the construction site or warehouse. It is actively used at construction sites, in the engineering industry, for maintenance and repair of bridges and cranes, for the installation of advertising stands, in work on the exterior of buildings and structures.
Cranked. This name is given due to the fact that the design of the articulated boom lift is made as if there were several knees on one very long leg that could be bent in different directions. There are models with diesel and electric engines. With diesel - more powerful. The articulated boom lift is much larger than the scissor lift and this significantly limits the scope of its use. Most often they use it in open space, because it is able to lift the load to a height of up to forty meters. But he won’t take much weight. If you need to lift and move the load in any direction, and not just down-up, - the most prudent decision. It costs more than a scissor, but its range of actions is much larger and more complicated.
This lifting equipment has high performance due to the proportional control of movements and the simultaneous execution of several manipulations of the boom control. Full-turn support device gives a chance to carry out work on lifting goods in hard to reach meta. This type of lifts is actively used in construction and installation works, since they make it possible to lift a load in a small space. Due to the presence of a bending boom with a long reach, this technique works well even at high altitude, in difficult conditions, where the use of other types of equipment is impossible.