the LD Single Beam Bridge Crane emerges as the ideal workhorse. Known for its simplicity, reliability, and exceptional cost-effectiveness, this standardized design dominates light-duty lifting applications globally. Combining robust construction with straightforward operation and minimal maintenance, the LD crane streamlines workflow and boosts productivity across countless industries.
Optimized Cost Efficiency: The LD crane’s single-girder design uses significantly less steel than double-girder cranes, translating to lower upfront costs for the crane itself and potentially reduced supporting structure requirements (like building columns). This makes it the most economical choice for light-to-medium duty cycles.
Space-Saving Profile: With its compact structure sitting lower in the workspace, the LD crane maximizes usable headroom beneath. This is crucial in facilities with height limitations or where maximizing vertical space is key.
Simplified Installation & Maintenance: Pre-engineered components and a straightforward design ensure quicker, easier installation compared to more complex systems. Maintenance is simplified due to readily accessible components and fewer parts overall.
Reliable Performance: Built to standardized specifications (like the Chinese JB/T1306 standard), LD cranes deliver dependable lifting performance within their designated capacity and duty cycle ranges (typically Class A3-A4). Key components like the electric hoist, end trucks, and controls are proven and widely available.
Versatile Operation: Operators control the LD crane via a pendant control hanging from the crane or an optional radio remote control, providing clear visibility and safe operation from the floor.
Table 1: Standard LD Single Beam Crane Performance Parameters
| Parameter | Typical Range | Notes |
|---|---|---|
| Lifting Capacity | 1 ton – 20 tons | Most common capacities: 1t, 2t, 3t, 5t, 10t, 16t, 20t |
| Span (S) | 7.5m – 28.5m (or 31.5m) | Standard spans in 3m increments; custom spans possible |
| Lifting Height (H) | 6m, 9m, 12m, 18m, 24m, 30m | Highly customizable based on building height and application needs |
| Work Duty Class | A3, A4 | Suitable for light to moderate duty cycles (e.g., < 10 starts/hour) |
| Ambient Temperature | -20°C to +40°C | Standard operating range |
| Power Supply | 3-Phase, 380V, 50Hz | Standard in many regions; other voltages/configurations available |
Table 2: Common LD Crane Configurations & Options
| Component/Feature | Standard | Common Options/Upgrades |
|---|---|---|
| Hoist Type | Electric Wire Rope Hoist (CD1/MD1 type) | Explosion-proof hoist (for hazardous areas), Chain Hoist, European-style hoist |
| Control | Pendant Control | Radio Remote Control, Cabin Control (less common on LD) |
| Travel Drive | Separate Drives on End Trucks | Frequency Control (for smoother starts/stops & precise positioning) |
| Safety Devices | Overload Limiter, Limit Switches (Up/Down, Travel) | Anti-sway system, Crane Weighing System, Load Moment Indicator, Emergency Stop |
| Runway | Top Running | Underhung Running (requires specific support structure) |
The LD Single Beam Crane excels in environments demanding efficient, reliable lifting without the need for extreme capacities or heavy-duty cycles:
Manufacturing Workshops: Handling raw materials, machine parts, tools, and finished products on assembly lines.
Warehouses & Distribution Centers: Loading/unloading trucks, moving pallets or goods within storage areas.
Maintenance & Repair Bays: Lifting engines, machinery components, and equipment for servicing.
Power Stations: Maintenance of turbines, generators, and transformers (within capacity limits).
Paper & Printing Plants: Handling rolls of paper and large printing components.
Small Foundries & Fabrication Shops: Moving molds, castings, and fabricated metal pieces.
Automotive Repair: Engine removal/installation, lifting vehicle bodies (specialized frames).
Capacity & Duty Cycle: Accurately determine the maximum weight to be lifted and the frequency/intensity of usage. Avoid overloading an A3 crane with an A5 workload.
Span & Lifting Height: Precisely measure the distance between runway rails (Span) and the required lifting height (H) from the floor to the hook’s highest point. Consider obstacles.
Workspace Environment: Is the area clean, dusty, hot, cold, or potentially explosive? Standard LD cranes are for general industrial environments. Special hoists or protection are needed for harsh conditions.
Hoist Type & Speed: Wire rope hoists are standard. Consider dual-speed hoists for precision placement. Chain hoists offer lower headroom but less precise control.
Control Preference: Pendant controls are cost-effective. Radio remotes offer greater operator freedom and safety for large spans or obstructed views.
Runway System: Ensure your building structure can support a top-running crane or is designed for an underhung system.
Professional Installation: Crucial for safety and performance. Installation should comply with local regulations and manufacturer specifications.
Regular Inspections: Implement a schedule for daily pre-operational checks, frequent inspections by trained personnel, and periodic comprehensive inspections as mandated by safety standards (e.g., annually).
Preventive Maintenance: Lubrication, brake adjustment, electrical component checks, and structural inspections prevent costly downtime and extend crane life.
Operator Training: Ensure all operators are fully trained on safe crane operation, load handling, and emergency procedures.
The LD Single Beam Bridge Crane remains the undisputed champion for cost-conscious businesses needing reliable, efficient lifting in light-to-medium duty applications. Its simple yet robust design, ease of installation and maintenance, space efficiency, and affordability make it an indispensable asset for countless workshops, factories, and warehouses worldwide. When your lifting needs fall within the 1-20 ton range and don’t demand continuous heavy-duty operation, choosing an LD crane is a smart investment in productivity and workflow optimization. For precise specifications and configurations tailored to your unique facility layout and operational requirements, consulting with a reputable overhead crane manufacturer is always recommended.
