- Dec 24, 2024
- News
Rubber Tyred Gantry Crane: Parts, Function and Specification
Tire gantry crane is a kind of gantry crane which is flexible in operation and can be moved freely without relying on the track.
Tire Gantry Crane is an important lifting equipment in ports, terminals and container yards, this kind of cranes use tires to move, do not rely on the track, so it is more flexible. This article focuses on the components, functions and specifications of tire cranes.
Parts of a Rubber Tyred Gantry Crane
RTG cranes are sophisticated machines composed of several key components, each contributing to their functionality.
1. Frame Structure
- Description: The steel frame supports the crane's load and maintains stability.
- Function: Provides structural integrity, enabling the crane to withstand heavy lifting and dynamic operations.
2. Hoist Mechanism
- Description: Includes the hoist motor, wire ropes, and pulley systems.
- Function: Used for lifting and lowering containers.
- Specification: Designed to handle heavy loads, typically ranging from 40 to 60 tons.
3. Trolley
- Description: A moving platform that carries the hoist along the gantry frame.
- Function: Ensures precise positioning of containers during loading and unloading.
4. Rubber Tires
- Description: Large, durable tires that provide mobility.
- Function: Allows the crane to move freely across the terminal without the need for fixed rails.
- Specification: Tires are designed to support the weight of the crane and its load, ensuring stability during operation.
5. Control System
- Description: Includes an operator cabin and electronic control panels.
- Function: Enables the operator to maneuver the crane with precision.
6. Power Supply
- Description: Can be powered by diesel engines, hybrid systems, or fully electric options.
- Function: Provides the energy needed to operate the crane.
- Specification: Electric RTGs are gaining popularity due to lower emissions and operational costs.
7. Anti-Sway System
- Description: A modern feature to stabilize the container during movement.
- Function: Reduces the swaying motion of containers, ensuring safety and efficiency.
Function of Rubber Tyred Gantry Cranes
RTG cranes play a crucial role in container handling, offering operational flexibility and high productivity.
1. Container Stacking
RTG cranes are primarily used for stacking containers in storage yards. They can stack containers up to 5-8 high, depending on the crane's design.
2. Intermodal Transfers
RTGs facilitate the transfer of containers between different modes of transport, such as trucks, trains, and ships.
3. Mobility Across Terminals
Unlike rail-mounted gantry cranes, RTGs can move freely within the terminal, making them versatile and adaptable to various operational layouts.
4. Cost Efficiency
By optimizing yard space and reducing reliance on manual labor, RTGs contribute to cost-effective terminal operations.
Specifications of Rubber Tyred Gantry Cranes
RTG crane specifications vary depending on the manufacturer and application. Below are some standard specifications:
| Specification | Details |
|---|---|
| Lifting Capacity | Typically ranges from 20 to 40 tons. |
| Span | Can cover 5–8 container rows plus a truck lane. |
| Height | Stacks containers 5-8 high, depending on the design. |
| Power Source | Diesel, electric, or hybrid systems. |
| Travel Speed | Up to 100 meters per minute when unloaded. |
| Operational Modes | Manual, semi-automated, or fully automated. |
Advantages of Rubber Tyred Gantry Cranes
RTG cranes offer numerous benefits that make them indispensable in modern terminals:
- Flexibility: The ability to move freely across the terminal provides unmatched operational flexibility.
- Space Optimization: High stacking capability maximizes yard space utilization.
- Reduced Emissions: Electric and hybrid RTGs contribute to environmentally friendly operations.
- Enhanced Safety: Features like anti-sway systems and automated controls improve safety.
Challenges and Maintenance of RTG Cranes
While RTG cranes are highly efficient, they also come with challenges:
1. Maintenance Requirements
- Challenge: Regular maintenance is essential to ensure performance and safety.
- Solution: Implementing a preventive maintenance schedule can reduce downtime.
2. High Initial Costs
- Challenge: The initial investment in RTGs is significant.
- Solution: Focus on long-term operational savings to justify the investment.
Conclusion
Tire gantry cranes are important equipment for efficient handling of containers in ports and terminals. These cranes are characterized by their rigid structure, flexible operation, and freedom of movement on the ground, which reduces the expenditure on laying tracks.
