Products Description
Single-girder European type overhead cranes are a special type of single-girder crane. They incorporate European overhead crane design concepts and technologies, offering higher performance and a wider range of applications. Compared to traditional single-girder overhead cranes, single-girder European overhead cranes are more compact, more flexible, and adaptable to a variety of complex working environments.
Parameters
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Parameter Category |
Specific Parameter |
Description / Typical Range |
|
Basic Parameters |
Rated Lifting Capacity |
1t, 2t, 3t, 5t, 10t, 16t, 20t, 32t, etc. (Customizable for higher capacities) |
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Duty Class (FEM/ISO) |
A3, A4, A5, A6 (Indicates the intensity of use and load spectrum) |
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|
Span |
7.5m ~ 20m or larger (Distance between center of end truck wheels) |
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|
Lifting Height |
6m, 9m, 12m, 18m, 24m, 30m, etc. (Hook center to floor maximum distance) |
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|
Power Supply |
3-Phase, 380V, 50Hz (Standard for China) |
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|
Speed Parameters |
Hoisting Speed |
Standard: 2~20 m/min; Dual-speed or frequency control available |
|
Trolley Travelling Speed |
Floor-operated: ~20 m/min; Remote/Cabin: ~30 m/min |
|
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Bridge Travelling Speed |
Floor-operated: ~30 m/min; Remote/Cabin: ~45 m/min (Often variable frequency) |
Product Details
1. Metal Structure
This is the crane's skeleton, supporting all equipment and loads.
Main Beam: The primary load-bearing beam spanning the tracks on either side of the factory building. It typically utilizes an optimized box-beam structure (welded steel plates), characterized by light weight, high rigidity, and minimal deflection. The main beam of a European crane is optimized through finite element analysis to minimize deadweight while maintaining strength, thereby reducing load on the factory building and saving energy.
End carriage: Located at each end of the main beam, they support the beam and are equipped with wheels, enabling the crane to move longitudinally along the factory building tracks. They typically utilize a box-shaped or composite steel structure, connected to the main beam at both ends with high-strength bolts, ensuring a sturdy structure.
2. Lifting Mechanism
This is the core component responsible for vertical lifting and lowering of the load. European cranes predominantly use high-performance electric wire rope hoists.
Electric Wire Rope Hoist:A highly integrated lifting device, which itself consists of:
Lifting Motor: Provides the power. Often a dual-speed or variable frequency drive (VFD) motor for smooth, controlled operation.
Gearbox: Reduces the motor's high speed to the low speed and high torque required at the hook.
Drum: The spool onto which the wire rope is wound.
Electric hosit Compact, lightweight, low-noise, high protection class (e.g., IP55), and extremely reliable.
Wire Rope & Hook Block: The flexible element that bears the load. The hook block includes the hook, sheaves, and lower block, often equipped with a safety latch to prevent the load from slipping.
3. Traveling Mechanisms
These systems move the crane and the hoist.
Bridge Travel (Long Travel): The mechanism that drives the entire crane along the length of the building's runway tracks.
Key Components: It is typically powered by "Modular Drive Units" (often called "three-in-one" drives), which integrate the motor, brake, and gearbox into a single, compact, and maintenance-friendly unit.
Trolley Travel (Cross Travel):The mechanism that drives the hoist along the length of the main girder.
Key Components: On most European single-girder cranes, this is an integral part of the hoist unit. The hoist's travel carriage, which also uses modular drives, runs on the bottom flange of the main girder.
4.Electrical and Control System
This is the crane's brain and nervous system, directing all operations.
Power Supply System
Conductor Bar System: Provides power to the main crane and trolley. This is a safe and reliable power supply method, replacing outdated bare cables.
Cable Reel/Drag Chain System: Provides power to the electric hoist (trolley).
Control System
Control Cabinet: Contains electrical components such as circuit breakers, contactors, and overload protectors.
PLC (Programmable Logic Controller): The "brain" of high-end European cranes, processing logic commands for precise and reliable control and providing fault diagnosis capabilities.
Frequency Converter: Controls the speed of the hoist and trolley motors, enabling soft starting, soft stopping, and stepless speed regulation for smooth operation and precise positioning.
Safety and Operating Devices
Operation: Ground-based operation is the mainstream, including wireless remote controls and wired pushbutton stations.
Limit Switches: These include hoist limit switches and trolley and trolley travel limits to prevent movement beyond safe limits. Overload Limiter: A core safety device that automatically cuts off operation when the load exceeds the rated value, preventing accidents.
Collision Prevention System: Prevents collisions between multiple cranes on the same track.
Visual and Audible Alarm: Provides a warning before the crane moves.
Products Advantages
1. Lightweight Structure, Energy Saving and Consumption Reduction
This is not only about reducing the weight of the equipment itself, but also about systematic optimization of the plant's entire lifecycle costs.
Lightweight Design Principle: Utilizing computer-aided design (CAD/CAE) and finite element analysis, precise stress calculations and optimized material distribution are performed on the main and end beams while ensuring structural strength.
For new plants: The reduced load-bearing requirements of the plant's supporting brackets and rails allow for smaller cross-sectional dimensions of steel structure beams and columns, directly saving on civil engineering steel and concrete costs.
For existing plant renovations/upgrades: New lifting equipment can be installed without extensive reinforcement of the plant, resolving the issue of traditional heavy cranes being prohibitive due to their excessive weight.
Significant Energy Savings: Lightweight means less driving resistance for the trolley and carriage mechanisms. This allows for the use of lower-power drive motors, resulting in significant long-term electricity cost savings. This represents a truly "green" design philosophy.
Increased Effective Lifting Capacity: When the load-bearing capacity of a factory is limited, the crane's light weight allows more load margin to be allocated to the lifted cargo, thereby increasing the factory's actual lifting capacity.
2. Smoother Operation and Precise Positioning
A qualitative shift from "capable of lifting" to "efficient lifting," meeting the high-end material handling demands of modern precision manufacturing and efficient logistics.
Advanced Control Technology: Fully Variable Frequency Speed
Control System: The hoist and trolley mechanisms are all controlled by a frequency converter, enabling soft starting and stopping of the motors, completely eliminating the severe mechanical and electrical shocks associated with direct starting of traditional cranes.
Extremely High Positioning Accuracy: Precise alignment is achieved, making it particularly suitable for applications requiring the utmost stability, such as precision assembly, loading and unloading machine tools, and handling glass or fragile items.
Effective Anti-Sway: Smooth acceleration and deceleration fundamentally suppresses hook and cargo swing, eliminating the need for operators to repeatedly "follow the vehicle" to stabilize the load, significantly improving operational efficiency and safety.
Cargo and Equipment Protection: Gentle starting and braking protects the spreader, rigging, and precision equipment and products being lifted, reducing product damage and quality risks caused by vibration and collision.
Impact on the crane structure itself is also minimized, extending the equipment's service life.
3. Modular Design for Easy Maintenance
Simplifying complex industrial products enables rapid deployment, easy maintenance, and future upgrades, minimizing downtime.
Modular Design Features: The "three-in-one" drive unit integrates the motor, gearbox, and brake into a compact module. This design offers compact structure, reliable performance, and easy installation and adjustment.
Standardized Connections: Interfaces between major components, such as the main beam, end beams, travel mechanism, and electrical cabinet, are standardized, like building blocks.
Quick Installation and Low Cost: Components are pre-assembled and pre-commissioned at the factory. Upon arrival, only modular assembly and wiring are required, significantly reducing on-site installation time and labor costs.
Easy Maintenance and Low Cost: Components are highly compatible, allowing for the immediate replacement of entire functional modules upon fault diagnosis, quickly resuming production. Subsequent repairs require only the replaced module, significantly reducing downtime.
Maintenance-free or long-life designs (such as sealed bearings and oil-bath lubricated gearboxes) require minimal daily inspection and lubrication, minimizing maintenance workload.
Easy Modification and Upgrade: When production processes change, requiring increased lifting capacity, longer spans, or improved operating levels, only the corresponding modules need to be upgraded or replaced, without scrapping the entire machine. This provides exceptional investment flexibility.
4. Safety and Reliability, Intelligent Control
Upgrading safety from "passive protection" to "active warning," intelligently enhancing operational experience and management efficiency.
Multi-layered safety features: Mechanical and electrical safety: Standard features include an overload limiter, dual limit switches (up and down), an emergency stop button, an anti-collision system (for multiple cranes on the same track), and voltage protection. Structural safety: The main beam meets strict rigidity standards, ensuring safe deflection and smooth, non-creaking operation.
Fault diagnosis and logging: The system monitors the operating status of each component in real time. If an anomaly occurs, the fault code and cause are immediately displayed on the touchscreen or human-machine interface, guiding maintenance personnel through rapid troubleshooting.
Maximizing safety: Preventing personal injury and property damage caused by equipment failure, while complying with strict international safety regulations (such as CE certification).
Improving operational efficiency: Intelligent diagnosis shortens troubleshooting time; user-friendly operation (such as remote control and feedback-based linkage console) reduces driver workload and improves operational efficiency.
Products Shipping
Core Packaging Principles
Safety and Stability: Ensure that equipment weighing tens or even hundreds of tons does not deform or damage during long-distance transportation (sea and land transport).
Rainproof and Moisture-Proof: Prevent metal components from rusting and rusting during sea transport or outdoor storage.
Clear Labeling: Facilitate inventory, identification, and storage by the consignee.
Easy Loading and Unloading: Well-designed packaging units facilitate port machinery and on-site lifting.
A mixed packaging solution combining bare packaging, box packaging, and bundle packaging is typically used.
1. Bare Packaging
Applicable Components: Large steel structures such as main beams and end beams.
Packaging Method:
Components are placed directly on reinforced wooden pallets or steel supports.
Use high-strength nylon or steel strapping for multi-point lashing to prevent rolling or shifting during transport.
Apply anti-rust grease to all exposed machined surfaces, threaded holes, pins, and other critical areas, then seal with waterproof and oil-proof composite materials or plastic covers/caps.
Wrap the entire bare unit with waterproof wrap or colored cloth to protect it from wind and rain.
2. Box Packing
Applicable Components:
Control boxes, electrical cabinets, and inverters: Must be packed in fully enclosed wooden boxes. The interior must be waterproof (e.g., lined with plastic film) and shockproof (e.g., filled with foam or paper scraps).
Precision instruments, trolley mechanisms, and drive assemblies: Use sturdy, enclosed wooden or iron boxes.
Small parts such as bolts, nuts, pins, and wiring can be packed in small wooden or cardboard boxes and placed together in a large wooden box.
Packing Method:
The box must be sturdy enough to withstand stacking pressure.
Items in the box must be secured with bolts or straps to prevent movement.
All boxes must be clearly labeled with item name, part number, quantity, gross/net weight, and icons indicating moisture resistance, shock resistance, and upward orientation.
3. Bundling
Applicable components: Long materials such as rails, I-beams, trolley rails, railings, ladders, etc.
Packaging Method:
Bundle these materials into regular bundles.
Securely secure with steel straps at both ends and in the middle.
Rust-proof and waterproof treatment is also required.
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