What part of a crane is the bridge?

What part of a crane is the bridge?

GIRDER
GIRDER, BRIDGE: The principal horizontal beam(s) of the crane, which supports the trolley, is supported by the end trucks, and is perpendicular to the runway.

What are the parts of the crane called?

Here are the different parts of a crane.

  • Hook. Though all parts of a crane are essential to its ability to lift and move heavy loads, none of it would be possible without the hook.
  • Hoist. The hoist is the part that creates lift in a rigging system.
  • Boom.
  • Jib.
  • Counterweights and Outriggers.

How does a bridge crane work?

A bridge crane is a type of crane that includes two overhead runways built into the building’s support structure. A single or double girder configuration, called a bridge, moves the crane up and down the runways, and the trolley and hoist run side-to-side along the bridge.

What are the components of a hoist?

Hoist components

  • 1- LIFTING MOTOR. The hoist has a cylindrical short circuit motor with an incorporated electromagnetic brake.
  • 2- GEARBOX. Robust and compact, situated on the exterior, allowing ease of access.
  • 3- DRUM & ROPE GUIDE.
  • 4- OVERLOAD LIMIT DEVICE.
  • 5- LIMIT SWITCH.

What is a sheave on an overhead crane?

Sheaves facilitate the smooth and safe operation of overhead crane hoists. Damaged sheaves can wear ropes prematurely and cause other dangerous hazards, such as binding wire rope.

What are the main components of a crane?

Cranes consist of four key components:

  • Hook. The hook element of a crane is the part that holds or carries the load and connects it to the hoisting element.
  • Hoist. The hoist element of a crane provides the vertical lifting and lowering power.
  • Trolley.
  • Bridge.

What is parts of crane any 5 parts?

Crane Parts and Functions

  1. The Hook. This may be one of the most recognizable and important parts of a construction crane.
  2. Wire Rope and Sheaves. Cranes use heavy-duty wire ropes to lift extreme loads.
  3. The Boom.
  4. Counterweights.
  5. Outriggers.
  6. Wheels and Tracks.
  7. The Hoist.
  8. The Jib.

What are the components of a crane runway system?

The runway system of an overhead crane can include the beams, columns, and rails that the crane runs along. The bridge or girder end trucks run along a rail which is secured to the top of the runway beams.

What kind of structure is a crane?

Tower cranes and communication towers are examples of frame structures. Frames are made from bars joined together to form a ‘framework’. This is one of the most economical ways of building structures. Some modern buildings have a frame structure which can only be seen during construction.

What is the difference between pulley and sheave?

A pulley is one of six types of simple machines. A sheave (pronounced “shiv”) is actually part of the pulley system. The sheave is the rotating, grooved wheel inside the pulley. This is the piece that the rope fits into.

What type of sheaves are used on cranes?

Nylon sheaves
Nylon sheaves are commonly used in a variety of applications on cranes, forklifts, firetrucks, aerial work platforms and other lifting equipment that utilize wire rope.