Gantry Crane, types, uses and application. JNTU-H notes ARS system
What is a gantry crane?
A gantry crane is a type of overhead lift with a single or double girder arrangement supported by freestanding legs that roll on wheels or along a route or rail system.
These are typically employed for an outdoor purpose or below an existing overhead bridge crane system. Unlike a bridge crane, a gantry crane does not require to be tied into a building’s support arrangement—eradicating the need for permanent runway beams and support pillars.
Larger gantry operations may run on a rail or track installed in the ground, typically in a vertical line in a dedicated work area. Smaller portable gantry operations run on castors or wheels and can be moved about equipment for maintenance or light fabrication work.
Features of gantry crane
Full exclusive control and manual operation choices
Stable starting and ending
Steady performance, less maintenance
High performance, low noise
Green production, no harm to the environment is caused in the production process
Easy structure, simple to install, operate and maintain
A broad range of applications, indoors and outdoors
High-cost production; low operational cost
What are gantry cranes used for?
Because of the high productivity and good performance, gantry cranes have a very broad range of applications. On the one hand, we can find them in indoor areas, such as the warehouse, yards, workshops, garage, production, and maintenance factory, etc. On the other hand, it is widely used for outside applications like the port, dock, cargo yard, shipyard, etc.
Full gantry crane or semi gantry crane are generally applied for heavy fabrication uses, or in some type of outdoor yard – transportation yard, rail and container yards, and steelyards. Movable gantry cranes are used for small service and it offers more adaptability than a jib crane or workstation crane.
Different Types of Gantry Cranes
Full Gantry Crane Systems
Full gantry crane systems are the most popular configuration—consisting of two legs that ride on a rail that is embedded flush with the top surface of the floor. They typically run in a straight line in a dedicated work area. This design allows motorized equipment like scissor lifts, forklifts, carts, and trucks to roll over it and cross through underneath the crane
Semi-Gantry Crane Systems
Gantry cranes can also be designed with one leg mounting on wheels or rails and the opposite side of the crane riding on a runway system attached to building columns or a sidewall of the frame structure. These are advantageous because they can conserve your basement space/workspace. Unlike a bridge crane, these fixings don’t need two runways backed by or tied back to form columns.
Portable Gantry Crane Systems
Portable gantry cranes are more modest lighter-duty gantry systems that work on casters or rubber wheels. These rollers allow the user to move it completely to a facility to handle various elements or quantities. When they’re empty and not beneath pressure, they can be moved or stored everywhere throughout a shop or into various work cells to allow greater space-saving and floor space flexibility.
Adjustable Gantry Cranes
Adjustable gantry cranes can be composed of variable height and span design. Adjustability enables the end-user to change the height of the beams—allowing more flexibility when carrying a gantry system in and out of a facility or through diverse areas of a shop
Gantry Crane Design Considerations
While a gantry crane is adjustable in its design because it doesn’t rely on structural supports and can be designed to be mobile, there are some things you’ll need to examine if you want to utilize a gantry crane in your office.
Power Delivery
For large outdoor gantry systems, cable reel is a simple electrification option. Cable reels employ a simple design that’s either spring-loaded or motor-driven to publish, regain, and store conductor cable for crane machinery. They can be mounted fixed or on a swivel base to allow the cable to payout in various angles and directions.
Indoor/Outdoor Use
If your gantry crane system will be running outdoors, you’ll want to consider the type of paint or coating is applied—as well as the element itself. Since the crane is being used out-of-doors, you’ll want stuff like stainless steel or protected steel that can withstand corrosion and continue up to UV vulnerability, saltwater, moisture, and excessive heat or cold.
Nearby Foot or Motor Traffic
Most people will choose to go with a gantry crane if they’re going to be driving a lot of traffic, forklifts, and vehicles in and out of an area where they need to employ their crane. A larger gantry system will enable forklifts to pick up materials and allow you to bring trucks in and out for loading. That's apparently, the more important ones that we've done have been for that reason.
Companies can get creative in positioning the controls, gearboxes, and panels on the legs to reduce exposure to the collision.
Fixed Axle vs. Rotating Axle End Trucks
Twisting axle end trucks are intended to be a little more heavy-duty and robust and typically have several parts, so they're lower maintenance. The gears are included in a continuous oil bath that holds all debris out—even in dirty, dusty, and outdoor conditions.
Crane Speed
Gantry cranes should be applied in applications where speed is not a concern. You can move a bridge crane at a pretty high speed, but on gantry cranes, the quantity of load is typically moved at a slower crawling speed.
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