Crank and scissor lifts: design features

Lifts are used to deliver heavy loads to any height. This equipment facilitates human labor and is divided by species into:

• cranked;
• Scissors;
• telescopic;
• mast.

Let's talk in more detail about the first two types, since they are considered the most popular and popular.

Scissors. 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 cargo is to be installed, which needs to be lifted. For a number of works involving only vertical movement, it is necessary to buy a scissor lift, for a horizontal one - to crank.

Scissor lift has small dimensions, so it can easily cope with work in hard-to-reach places. An interesting fact: the principle 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 heavy cargo to a high altitude. This equipment is moved by means of a chassis, due to which the maneuverability of the hoist increases. A maximum of 2 people is required to operate this equipment. If a foreign object falls under the platform, the lift immediately stops working, but does not break. It is equipped with limiters of maximum lifting height, which is extremely important for the smooth operation of hydraulics.

There is engine protection and the possibility of a smooth stop, the speed regulator of the hydraulic system. Scissor lift is cheaper than the crank because of the simple mechanism. Some models can lift up to 10 tons of cargo up to twenty-five meters. The scope of this type of equipment is where another method of vertical cargo movement is unrealistic. Used to raise both goods, and employees of the construction site or warehouse. It is actively used on construction sites, in the machine building industry, for maintenance and repair of bridges and cranes, for mounting advertising stands, in works on the exterior of buildings and structures.

Cranked. This name is given due to the fact that the construction of the crankshaft is made as if on one very long leg a few knees that can bend in different directions. There are models with diesel and electric engines. With diesel - more powerful. The crankshaft is much larger than the scissor lift and this significantly limits the scope of its use. More often it is used in the open space, since it is capable of lifting the cargo to a height of up to forty meters. But he will not take much weight. If you need to lift and move cargo in any direction, and not just down-up, to buy a crankshaft is the most prudent decision. It is worth more than a scissor, but the range of its actions is much larger and more difficult.

This lifting equipment has high productivity due to proportional control of movements and simultaneous execution of several manipulations of the boom control. A full-fledged support device gives a chance to work on lifting goods in hard-to-reach metas. This type of hoist is actively used in construction and installation works, since they make it possible to lift cargo in a small space. Due to the presence of a bending boom with a long length of departure, this technique works well even at high altitude, in difficult conditions, where the use of other types of equipment is impossible.