Gantry Crane Parts

A gantry crane is a large-duty material lifting equipment. It is popularly used in construction sites, port terminals, factories, open-air storage yards, and shipyards. This industrial lifting equipment is assembled from a variety of key parts, which also facilitates its transportation from production to the use of the site and the later maintenance and repair. This article will help you understand the core gantry crane parts, analyze their structural characteristics and functional principles, to help you gain a more comprehensive understanding of this heavy-duty crane system and its components.

What Are The Parts Of A Gantry Crane?

A gantry crane comprises multiple key parts, including the main girder, support legs, tracks, travel mechanism, hoist mechanism, and electrical system. Other important components include the controller or operator’s cab, pulleys, brakes, and various safety devices. These components work together to move cargo from point A to point B. The following will introduce you to the functional description of the gantry crane parts.

Single Girder Gantry Crane Structure

Double Girder Gantry Crane Structure

• Main beam: A horizontal load-bearing structure spanning the top of the outriggers on both sides, which determines the span and load-bearing capacity of the crane.
• Support legs: Vertical columns supporting the main beam, transferring the beam load to the ground rails. They form a “gate”-shaped frame.
• Lower crossbeam: A structure connecting the bottom of the legs on both sides.
• Lifting mechanism: installed on the main beam or trolley to realize vertical lifting of goods.
• Trolley travel mechanism: drives the lifting mechanism to move horizontally along the length direction of the main beam.
• Crane Travel Running Mechanism: The entire gantry crane can move longitudinally along the tracks laid on the ground.
• Electrical System: Provides power to various mechanisms.
• Control Center: Equipped with electrical cabinets, PLCs, inverters, remote controls, or a driver’s cab.
• Safety devices: Equipped with limiters, overload protection, windbreaks, buffers, and an emergency stop button, providing real-time monitoring during operation.
• Walkway platform: Provides access for routine maintenance and inspection by professional technicians.

Gantry Crane Parts Diagram

Support Legs

Hook

Control Room

Cable

Gantry Crane Main Beam

Lifting Mechanism

Trolley Travel Mechanism

Crane Pulley Wheel

Components And Functions Of Different Types Gantry Cranes​

Portable Gantry Crane: Structural Description

The portable gantry crane is mainly composed of a detachable main beam and outriggers to form the main frame. The bottom of the outriggers is equipped with universal castors with brakes. The lifting mechanism is a wire rope electric hoist or chain hoist. The overall structure is compact.

• Main beam: spans above the support legs and is mainly responsible for bearing the load.
• Outriggers: Two supporting structures that support the main beam and transfer the load to the ground.
• Lifting mechanism: installed on the main beam, responsible for the vertical lifting of goods.
• Traveling mechanism: Universal casters equipped with brake function, with sufficient load-bearing capacity and wear resistance.

Semi-Gantry Crane Structural Description

A semi-gantry crane is mainly composed of one or two main beams, an end beam, single-sided outriggers, a lifting mechanism, an operating mechanism, and an electrical control system.

• Main beam: The main load-bearing structure of the crane spans above the working area.
• Outrigger: Located on one side of the crane, it supports one end of the main beam and is equipped with a running mechanism.
• Lifting mechanism: responsible for the vertical lifting of goods.
• Operating mechanism: drives the entire crane to move longitudinally along the ground track.
• Electrical system: provides power and control for the crane.
• End beam: Connects to the main beam on the other side, effectively saving space and construction costs.

Structural Description of Rubber-Tyred Gantry Cranes

Rubber Tyred Gantry Crane consists of gantry bracket, power transmission system, hoisting mechanism, traveling mechanism, trolley running mechanism, trolley running mechanism and special container spreader.

• Portal Bracket: Heavy-duty steel structure frame to support the whole machine and provide working space.
• Power Transmission System: Mostly adopts diesel-electric hybrid or all-electric drive, equipped with frequency conversion control.
• Lifting mechanism: Supporting fast lifting and lowering of containers.
• Traveling Mechanism: Tire-type design, equipped with a hydraulic or electric drive system, with a variety of steering modes.
• Trolley running mechanism: Drive the spreader to move transversely along the main beam.
• Specialized container spreader: It can automatically or manually lock the corner pieces of containers.

Gantry Crane Parts Manufacturer

Understanding the parts of gantry cranes is crucial for selecting the right lifting equipment for your needs and ensuring safe and efficient operation.Once you know what each part does, the next step is understanding how they work together during an actual lift cycle — how the motor engages the hoisting mechanism, how the trolley and gantry travel mechanisms coordinate, and what happens electrically when the operator issues a command. Our how does a gantry crane work guide covers the full working sequence in plain terms. VOITTO, as a professional crane manufacturer and supplier, offers a wide range of high-quality gantry crane systems designed to meet the diverse demands of our clients.

Whether you need a double girder model for heavy-duty applications or a rubber-tyred design for more flexible use, our team of experts is here to help you find the perfect solution. Contact us today for customized crane lifting solutions.