Electric Single-Girder Bridge Crane: Technical Overview and Applications
The electric single-girder bridge crane, also known as a single-beam overhead crane or EOT lifting system, is a versatile industrial solution designed for efficient material handling. Powered by an electric hoist, this overhead lifting equipment ensures precise and reliable load management in diverse industrial settings. Its lightweight yet sturdy design makes it a top choice for warehouses, manufacturing plants, and workshops aiming to optimize material transport processes.
DONGQI offers fully customizable single-beam lifting cranes tailored to meet unique operational needs across industries. Built with advanced engineering and premium components, these cranes deliver high efficiency and long-lasting performance for material handling tasks.
Applications of Single-Beam Overhead Cranes
Single-girder overhead cranes are widely used for material handling in various industries. Key applications include:
Manufacturing and Assembly Lines: Precision lifting for components and machinery in production facilities, ideal for industrial crane solutions.
Warehousing and Logistics: Streamlined goods movement to enhance inventory management efficiency, perfect for warehouse lifting equipment.
Pipe and Tube Handling: Smooth handling of pipelines and elongated materials, suited for tube plant material handling.
Maintenance and Repair Workshops: Safe and reliable lifting for heavy machinery servicing, a key feature of workshop overhead cranes.
Note: These cranes are not suitable for explosive, highly corrosive, or flammable environments. For such conditions, DONGQI provides specialized single-girder lifting solutions compliant with strict safety standards.
Benefits of the LD Series Overhead Crane
The LD series single-girder bridge crane offers numerous advantages for industrial material handling:
Lightweight Construction: Simplifies installation and reduces upkeep for cost-effective crane maintenance.
Quiet Operation: Soft-start and soft-stop features minimize noise, enhancing workplace safety and comfort.
Enhanced Safety Features: Includes overload protection, limit switches, and emergency stop for secure crane operations.
Low Maintenance Costs: Durable components ensure long-term reliability for overhead material handling systems.
Precision Components: CNC-machined wheels, wire rope drums, and gears for accurate load handling.
Heavy-Duty Motors: Slip-ring or squirrel-cage motors with VVVF control for smooth operation of single-beam EOT cranes.
Technical Specifications
Parameter
Specification
Lifting Capacity
1–20 tons, ideal for light to medium-duty material handling
Span
7.5–28.5 meters, customizable for specific crane applications
Lifting Height
6–18 meters
Lifting Speed
0.42/4.2–0.8/8 m/min, adjustable for precise load control
Trolley Travel Speed
20 m/min
Crane Travel Speed
20 m/min
Work Duty
A3–A4, suitable for industrial crane operations
Track Type
P24 or P38
Power Supply
Three-phase 380V/50Hz (customizable)
Control Mode
Pendant, wireless remote, or cabin control for flexible crane operation
Key Components of Single-Girder Lifting Systems
Main Girder
Structure: High-quality I-beam with U-shaped groove for stable load handling.
Design: Welded box structure for enhanced durability in overhead crane systems.
End Carriages
Structure: Rectangular steel tubes with bolted assemblies for quick setup of industrial lifting equipment.
Lifting Mechanism
Electric Hoist: Supports single or dual-speed lifting and trolley movement for efficient material handling.
Drive System
Motors: Slip-ring or squirrel-cage motors with IP54/IP44 protection for reliable crane performance.
Components: CNC-machined gears, couplings, and wire rope drums for precision load handling.
Electrical System
Control: Schneider electrical components with voltage and current protection for safe crane operations.
Features: Ensures dependable performance in industrial environments.
Safety Features for Secure Crane Operations
Polyurethane Buffers: Absorb impact to protect the crane structure during material handling tasks.
Limit Switches: Prevent over-lifting or over-lowering for safe load management.
Overload Limiter: Ensures secure handling of loads in overhead lifting systems.
Circuit Protection: Monitors electrical systems to prevent faults in crane operations.
Emergency Stop: Enables immediate shutdown for enhanced workplace safety.
Single vs. Double Girder Cranes
Single-girder overhead cranes are ideal for:
Short spans and light to medium-duty lifting tasks, perfect for compact crane solutions.
Workspaces requiring a smaller equipment footprint, ideal for warehouse lifting systems.
Operations prioritizing cost-effective installation and maintenance for industrial cranes.
In contrast, double-girder cranes suit heavy-duty lifting, longer spans, and higher work duties but involve higher costs and maintenance complexity.
Operational Guidelines for Overhead Cranes
Conduct no-load tests on wire ropes, hooks, and electrical systems before operating the crane.
Ensure no personnel are positioned under the hook during lifting tasks.
Avoid overloading or unsafe handling practices to maintain crane safety.
Regularly lubricate wire ropes and replace worn components to ensure reliable crane performance.
Why Choose DONGQI’s Single-Girder Overhead Crane?
DONGQI’s electric single-girder bridge crane offers:
High efficiency for seamless material handling in industrial settings.
Durable construction for long-term reliability in overhead lifting systems.
Cost-effective maintenance with minimal downtime for workshop cranes.
Advanced safety features for secure and precise load handling.
This crane is an excellent choice for manufacturing plants, warehouses, tube handling facilities, and maintenance workshops, ensuring dependable and efficient lifting performance.
For more details or to explore customized overhead crane solutions, contact DONGQI today.
Frequently Asked Questions About Electric Single-Girder Bridge Cranes
What is an electric single-girder bridge crane?
An electric single-girder bridge crane, also known as a single-beam overhead crane or EOT lifting system, is a material handling crane featuring a single main beam and an electric hoist. Designed for light to medium-duty lifting, it ensures precise and safe operations in factories, warehouses, and maintenance workshops, making it ideal for industrial lifting solutions.
What are the applications of a single-girder overhead crane?
Single-girder overhead cranes are versatile and widely used in:
Manufacturing and Assembly Lines: Lifting components for production efficiency.
Warehousing and Logistics: Streamlining material handling for inventory management.
Tube and Pipe Conveying Plants: Smooth transport of long materials.
Maintenance Workshops: Safe handling for equipment servicing, ideal for workshop lifting equipment.
What is the lifting capacity of the LD series single-girder bridge crane?
The LD series single-girder bridge crane supports a lifting capacity of 1–20 tons, perfect for light to medium-duty industrial crane operations. Capacities can be customized to meet specific material handling requirements.
What is the maximum span and lifting height?
The crane offers a span of 7.5–28.5 meters and a lifting height of 6–18 meters, providing flexibility for various warehouse and factory settings, ensuring efficient overhead lifting systems.
What are the key safety features of a single-beam EOT crane?
Key safety features include:
Polyurethane Buffers: Absorb impact to protect the crane structure.
Limit Switches: Prevent over-lifting or over-lowering for safe load handling.
Overload Limiter: Ensures secure material handling operations.
Circuit Protection and Emergency Stop: Enhances safety for industrial crane operations.
Can the crane operate in hazardous environments?
Standard single-girder cranes are not recommended for explosive, flammable, or highly corrosive environments. DONGQI offers customized European-standard overhead crane solutions compliant with industrial safety regulations for such conditions.
How does a single-girder crane differ from a double-girder crane?
Single-girder overhead cranes are ideal for short spans, light to medium-duty tasks, and compact workspaces, offering cost-effective installation and maintenance. Double-girder cranes are better suited for heavy-duty lifting, longer spans, and higher work duties but involve higher costs and more complex maintenance.
What control modes are available for the crane?
The electric single-girder bridge crane supports flexible operation through:
Pendant Control: For direct, hands-on operation.
Wireless Remote Control: For convenient, remote crane handling.
Cabin Control: For enhanced control in larger industrial settings.
These options ensure safe and versatile operation for single-beam EOT cranes.
How often should the crane be maintained?
Regular maintenance is essential for reliable performance:
Conduct no-load tests before operation to check wire ropes, hooks, and electrical systems.
Lubricate wire ropes and replace worn components promptly.
Inspect motors, hoists, and electrical systems regularly to ensure safe and smooth overhead crane operations.
What is the warranty period for DONGQI’s single-girder bridge cranes?
DONGQI provides a warranty of 1–3 years
Can the crane be customized?
Yes, DONGQI offers fully customizable single-beam overhead cranes. You can adjust lifting capacity, span, lifting height, control modes, and other specifications to meet specific industrial material handling requirements.
Single-girder overhead cranes are ideal for:
