Container gantry crane is designed to improve the efficiency of container yard operations. It is responsible for stacking, loading and unloading containers, and the transportation of containers is done by a container trailer. The typical containers gantry cranes include two main types: rail mounted gantry crane and rubber tyred gantry crane.
Rail mounted container gantry crane for Sale
Rail mounted gantry crane, also known as RMG crane, is a great choice for handling and stacking large containers. It runs along the track, lifting and stacking containers within the specified range of the container yard. The lifting mechanism, trolley mechanism and crane travelling mechanism are mostly controlled by AC frequency conversion. The hoisting mechanism is generally in the form of a single drum, and it can also be designed in the form of a double drum as required.
Rail mounted container gantry crane parameters:
- Load capacity: 30-50t
- Span: 18-35m
- Lifting height: 12.3-21m
- Lifting speed: 9.2-12.5m/min
- Trolley running speed: 45-56m/min
- Crane running speed: 42-50m/min
- Work duty: A6-A8
The advantages of RMG container crane
- Electric drive, save energy and reduce pollution
- High yard utilization
- Relatively simple mechanical structure
- Reliable operation and easy maintenance
- Computer control can be used to realize automation of yard operations.
The Main Structure of Container Gantry Crane
- Lifting mechanism
Lifting mechanism consists of electric motor, disc brake, reducer, and duplex drum.
The wire rope drum lifting mechanism is driven by an AC motor, and a single-layer rope groove drum is driven by a closed spiral gear reduction box to wind the rope. The motor has enough power to ensure good acceleration performance.
An elastic coupling with a brake disc is provided between the hoisting motor and the reduction box. The brake is a hydraulic push rod disc brake released by a spring brake push rod.
An overspeed switch is provided on the high-speed shaft end of the hoisting mechanism. When the motor speed exceeds 115% of the rated speed, the entire machine is stopped in emergency.
Detected by the weight sensor, when the load under the spreader is between 100% and 110% of the rated load, the rated load indicator light in the driver’s cab is displayed. When the load under the spreader exceeds 110% of the rated load, the buzzer alarms, the overload indicator flashes, and the PLC prohibits the lifting mechanism from continuing to lift upwards, but allows the lifting speed limit to drop and lower the load.
- Trolley travelling mechanism
The trolley running mechanism generally consists of a wheel set, a motor, a reducer, a brake, a coupling, etc. or a three-in-one reducer and a guide wheel set.
- Crane travelling mechanism
RMG crane travelling mechanism mainly consists of three-in-one reducer drive, rail clamp, buffer, wheel clamp, etc.
Selection of Container Gantry Crane
The selection of container gantry crane needs to be comprehensively considered based on factors such as the terminal’s capacity, collection and transportation methods, terminal road area, environmental protection, investment costs and operating costs. If you are unsure as to which type of gantry crane is right for you, please provide some basic information so we can help you select the right one for your application:
- Rated lifting capacity
- Lifting height
- Stacked container layers
- Number of containers passed
- Base distance
- Other special requirements
Interested in our container gantry crane or want to get a free quote? Send your inquiry today.