Construction Machine Blog

The crane is a very versatile construction equipment. As I have mention before in my previous posts, there are many types and shapes of cranes in the market such as truck crane and tower crane. Different types of cranes are used on the basis of the amount of weight to be lifted and the area available for movement at the construction site. Today in this article, I want to focus my attention on jib crane, another important member of the crane family. You dear readers would also learn about the various types of Jib cranes in the article.

 Jib Cranes

The design of a Jib Crane

As a common type of cranes, the jib crane consists of a pillar fixed to the wall or mounted on the floor. The pillar supports a horizontal jib, or boom which has a movable hoist. The hoist is used to lift or lower a load with the help of a drum, or lift-wheel, which has a chain or rope wrapped around it. The drum is driven electrically or pneumatically, and can be operated manually. The lifting medium is usually a chain, although it may also be a fiber rope or wire cable. The load is lifted with the help of a lifting hook attached to the lifting medium.

 The design of jib crane

 Types of Jib Crane

As a particular type of cranes, jib cranes can also be divided into several types. The floor mounted type, wall mounted type (fixed) and wall mounted type (traveling) are the three main types. Let’s see them in details one by one.

 Floor Mounted Type

This is the most commonly used Jib crane. Floor mounted jib crane is a self-supporting jib crane having a vertical mast mounted on a concrete foundation. These types of cranes are generally used to share the load of main cranes. The construction of the crane is as described above. All these cranes can rotate 360 degrees and are manually operated.

  Wall mounted type (fixed)

This type of crane is mounted horizontally on the wall and instead of a vertical shaft has a RCC column bracket mounting. The hoist mechanism is similar to the floor mounted type, but without a vertical boom. The RCC column bracket allows a maximum rotation of 200 degrees but covers the area near the bracket mounting without obstruction at floor level.

 Wall mounted type (travelling)

The construction of this type is similar to that of fixed type with the only difference that the crane is able to cover the lengthwise area near the building columns without obstruction at floor level. The crane’s columns are specially designed and the crane instead of rotating, moves along a runway track suspended along building columns.

Through this article, I hope all of you dear readers have a better understanding about cranes and jib cranes.

Tags: design, jib crane, types

This entry was posted on Thursday, August 27th, 2009 at 1:42 am and is filed under crane. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.