Electric cranes types and applications
Today, electric cranes are very common and have very wide variety of usage. Use of electric crane depends on type of application and model of electric crane. Electric tower cranes are used mostly on construction sites and can be luffing jib electric tower crane or a hammerhead type electric crane. What type of electric crane is installed on a construction site will depend on many factors. Those factors can be the required height and clearances, required capacity at radius, noise restrictions and erection/dismantling requirements. The cost of electric crane plays a big role as well. Electric tower cranes have great advantage over diesel powered tower cranes as they are very quiet. They don’t require as much maintenance and don’t need any refueling.
Electric portable cranes can be mounted on a vehicle and used with 12V/24V electric current that is supplied by that vehicle. Very useful bit of equipment for light applications, loading and unloading of light items that are to be transported. Due to their limited capacity and radius, electric mini portable cranes are not used for any installations of structural elements.
Electric portable cranes can have one or more powered functions, the powered winch function being the basic. Electric mini portable cranes can also be used in workshops or anywhere as they are very simple to use and require minimum erection time and very little space. Stability of supporting surface (besides the obvious problem of overloading) is just about the only thing that can go wrong with this type of crane.
Overhead electric cranes include bridge and gantry cranes. They are mounted on either runways on the ground or high above the ground as a traveling beam and have at least one powered winch in use. They can have cabin or be remotely controlled by an qualified operator. Powered functions of an overhead electric bridge crane can be traveling along supporting surface. Another is travelling of winch along the beam and perpendicular to supporting surface direction. Than – the movement of main winch up and down, and any additional movements like grab or spin or both. Gantry cranes sometimes have two powered hoists or winches and can execute what looks like ‘dual crane lift’.
Electric winches or electric hoists can be used for lifting or for pulling applications and come in all different sizes and power options. They come equipped with wired or wireless remote control. Commonly used are electric winches on four wheel drive vehicles but commercial applications have a lot more types of applications for electric winch. They are also utilised in man and material hoists applications, for example.