A single girder crane has
only one bridge beam
, and the hoist trolley operates or travels on the lower flange of the bridge girder. · A double girder crane will have two bridge beams, and the hoist trolley travels on rails, usually attached to the tops of the crane girder.
What is a double girder bridge crane?
Double Girder Overhead Bridge Cranes
Double girder cranes can provide an extra 18-36′′ of hook height because the trolley and hoist are placed between or on top of the cross girders. On a double girder crane, there are
two girder beams that make up the bridge
and they’re supported by an end truck on each side.
What are the types of overhead crane?
- Bridge Cranes.
- Gantry Cranes.
- Monorail Cranes.
- Jib Cranes.
- Workstation Cranes.
What do you call a type of overhead crane with a single or double girder configuration supported by freestanding legs that move on wheels or along a track or rail system?
A gantry crane
is a type of overhead crane with a single or double girder configuration supported by freestanding legs that move on wheels or along a track or rail system. Gantry cranes are usually considered when there is a reason not to incorporate an overhead runway system.
What are the 3 basic components of an overhead crane?
The principal parts of overhead traveling cranes are:
bridge girders, end trucks, trolley with hoisting mechanism, an operator’s cab or pendant control
. Careful repair and maintenance are essential to safe crane operations.
What is the another name of overhead crane?
An overhead crane, commonly called
a bridge crane
, is a type of crane found in industrial environments.
What is overhead crane used for?
To move extremely heavy or bulky loads through the overhead space in a facility
, instead of through aisles or on the floor, an overhead crane (also called an industrial crane, crane, or overhead traveling crane is a machine that lifts, lowers and moves a load horizontally.
What’s the meaning of girder?
:
a horizontal main structural member
(as in a building or bridge) that supports vertical loads and that consists of a single piece or of more than one piece bound together.
What is the difference between single girder and double girder crane?
A single girder crane has only
one bridge beam
, and the hoist trolley operates or travels on the lower flange of the bridge girder. A double girder crane will have two bridge beams, and the hoist trolley travels on rails, usually attached to the tops of the crane girder.
What is a double girder?
Double Girder EOT Crane have
2 Main Girders across the span
. 2. It consist of Electric Hoist travelling on lower flange of Main Girder and not required rail for cross traveling. It consist of a crab mechanism travels above both girders run over cross travel rails with platform to maintain all parts of crab.
What are the major advantages of overhead Travelling crane?
- Increased Safety. Forklifts carry the risk of imprecise stacking, dropping goods as well as accidents (due to crashing). …
- Improved Load Control. …
- Avoid Floor Obstructions. …
- Improved Ergonomics. …
- Easy Lifting of Loads. …
- Customizable.
What is the difference between gantry crane and overhead crane?
The terms gantry crane and overhead crane (or bridge crane) are often used interchangeably, as both types of crane straddle their workload. The distinction most often drawn between the two is that with
gantry cranes, the entire structure (including gantry) is usually wheeled (often on rails)
.
How does a overhead crane work?
Overhead cranes cover a rectangular area, moving a load side to side and backward and forward. They typically incorporate a
top running trolley hoist
which moves along the top of the two bridge beams on its own set of wheels for increased headroom under the crane; also called a top running crane.
How do you maintain an overhead crane?
Ensure there are no loose, broken, or damaged parts on the hoist, trolley, bridge, runway, or electric systems. Check that the
wire rope is reeved
and seated in the drum grooves properly. Verify that the bottom block is not twisted (no two lengths of wire rope should touch).
What are the main parts of a crane?
- 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.
How much does an overhead crane cost?
Jib Crane: Anywhere
from $500 – $25,000
There are many different types of jib cranes, including: Free-standing. Workstation (typically lighter capacity) Structural (can be designed up to 10-ton capacity)
