The LH Double Girder Electric Hoist Crane (Double Hook) is a robust and versatile industrial lifting solution designed for medium-duty applications requiring dual-load handling. Engineered for precision and reliability, it combines a sturdy double girder structure with advanced electric hoist technology. Below is a detailed breakdown of its features, specifications, and applications:
Double Girder Design: Provides superior rigidity and stability compared to single girder cranes, supporting lifting capacities of 3–63 tons (common models: 5–50 tons) and spans up to 50 meters.
Dual-Hook System: Equipped with a main and auxiliary hook (e.g., 25/5t, 32/10t) for simultaneous handling of primary and secondary loads.
Electric Hoist Integration: Uses CD/MD-type hoists with dual-speed lifting (e.g., 0.8/8 m/min) for precision in material handling.
Safety Mechanisms: Includes overload protection, limit switches, emergency stop buttons, and polyurethane buffers.
Control Options: Operated via pendant pushbutton, remote control, or cabin control for flexibility.
| Parameter | Range/Details |
|---|---|
| Lifting Capacity | 3–63 tons (standard: 5–50t) |
| Span | 5–50 meters (customizable) |
| Lifting Height | 6–60 meters (adjustable) |
| Lifting Speed | 0.33–8 m/min (dual-speed options) |
| Trolley Speed | 10–30 m/min (standard); up to 63 m/min |
| Crane Travel Speed | 20–110 m/min (variable frequency drives optional) |
| Work Duty Class | A3–A5 (ISO 4301-1) |
| Power Supply | 380V, 50Hz, 3-phase |
| Temperature Range | -20°C to +60°C |
| Protection Grade | IP54–IP65 (dust/water-resistant) |
Steel Mills: Handling coils, molds, and heavy machinery.
Ports & Warehouses: Loading/unloading containers and bulk cargo.
Manufacturing: Assembly lines for automotive, machinery, or electronics.
Mining & Construction: Transporting raw materials and equipment.
Power Plants: Maintenance of turbines and generators.
Durability: Constructed with high-quality carbon steel (Q235B/Q345B) and forged hooks for longevity.
Space Efficiency: Compact trolley design maximizes vertical workspace.
Energy Savings: Variable frequency drives (VFDs) reduce power consumption and enable smooth acceleration.
Customization: Configurable spans, speeds, and lifting heights to match specific workflows.
Safety Compliance: Meets FEM, DIN, and ISO standards with overload alarms and fail-safe brakes.
Main Hook: Handles primary loads (e.g., 25t main hook).
Auxiliary Hook: Manages lighter/secondary tasks (e.g., 5t auxiliary hook).
Example Configuration: A 32/5t model lifts 32 tons with the main hook and 5 tons with the auxiliary hook, ideal for multi-task operations like balancing long beams or handling mixed loads.
Key points of selection
Load matching: Select tonnage (such as 16/3 tons or 32/10 tons) according to the needs of the main and auxiliary hooks to avoid overload of the auxiliary hooks.
Span and plant adaptation: Span > 22 meters preferably H-beam, enhance the torsional performance.
Safety and maintenance
Regular inspection: monthly check brake wear (braking torque ≥1.5 times rated load), wire rope breakage rate ≤10%.
Lubrication management: gear box lubricating oil change every 3 months (ISO VG220), track bolts tighten every 6 months
Yes, because the working condition are different, all our products are customized depending on detail requirement! So all your products will be specially designed by our engineers according to your workshop conditions.
Yes, all kinds of certification are available, if you have doubt, you can come to our factory and test it by yourself,or you can let some third-partied to do the inspection for you.
Yes, we have. But we only have the standard-sized products, if you need customized products, then it will take some time to manufacture it.
It depends on your products quantity and products data you given, but we will try our best to deliver your products as soon as possible.
We will sent you the detail installation manual or if you are needing, our installation engineers can come to your workshop to guide the installation.
You can come to our factory anytime when you are convenient. We will make arrangement to pick you up.
