LXD European Multi-Point Suspension Crane for Light Assembly Lines
The LXD/DXT European-style multi-point suspension crane is a lightweight lifting solution specifically engineered for large-span factory buildings, aircraft maintenance hangars, and aerospace assembly workshops. Featuring an optimized European box-type main girder with flexible suspension points, this overhead crane offers a lifting capacity range of 3 to 40 tons and can be configured with 3 to 8 suspension points. Since it requires no floor-mounted runway system, the crane is suspended directly from the roof truss or steel beams, freeing up valuable floor space in the workshop. It is widely deployed in aircraft manufacturing plants, aerospace facilities, and large industrial buildings.
▲ LXD/DXT European multi-point suspension crane in operation (click to enlarge)
Product Overview
The LXD multi-point single-girder suspension crane and the DXT multi-point double-girder suspension crane are collectively referred to as European multi-point suspension cranes. Unlike conventional overhead cranes, this model is suspended directly beneath the factory building's steel roof structure, eliminating the need for floor-mounted runway beams and rail systems, which significantly reduces infrastructure costs. For workshop spans exceeding 20 m, end support alone cannot guarantee sufficient main girder stiffness. To address this, intermediate suspension points (3 to 8) are added along the span, working in synchronization through the rail system to ensure stable operation across large spans.
Model Designation
| Model | Structural Configuration | Applicable to Span | Lifting Capacity |
|---|---|---|---|
| LXD | single main girder + Multi-Support Point | 10~40m | 3~20t |
| DXT | twin main girders + Multi-Lifting Point | 15~50m | 10~40t |
Core Specifications
| Parameter | LXDSingle Girder | DXTdouble girder |
|---|---|---|
| Lifting Capacity | 3t / 5t / 10t / 16t / 20t | 10t / 16t / 20t / 30t / 32t / 40t |
| Number of Lifting Points | 3~8 Configurable Support Points | 3~8 Configurable Lifting Points |
| travel speed | 5~60 m/min(Frequency conversion Stepless control) | |
| trolley speed | 2~20 m/min(Frequency conversion Stepless control) | |
| Lifting Speed | 0.4~16 m/min(Variable Frequency Speed Control) | |
| Work Duty / Classification | A3~A5 | |
| Power Supply | Three-Phase AC 380V / 50Hz | |
Product Features
Multi-Support, Wide Span
3–8 support points covering spans from 10 to 50 m for full workshop coverage
Flexible Main Girder Design
Articulated connections minimize stress transfer to the space-frame roof structure
Integrated Three-in-One Drive
Motor, reducer, and brake in a single unit with hardened tooth flank and disc braking
Precision Positioning
Variable-frequency stepless control plus PLC synchronization for coordinated multi-crane lifting
Multi-Layer Safety Protection
Electronic and mechanical anti-derailment devices, phase loss protection, IP55-rated enclosure
European-Style Lightweight Design
Dead weight reduced by 15–25% versus conventional underhung cranes, resulting in lower wheel loads
Technical Specifications
| System | Configuration Description |
|---|---|
| Main Girder Structure | European-Style Optimization Weldingbox girder, Q235B (≈S235JR)/Q345B (≈S355J2)Steel Plate,40mCNC-Cut Full Width Cutting, Submerged Arc Automatic Welding+Non-Destructive Flaw detection, Post-Weld Shot Blasting Sa2.5 Class, Epoxy Zinc-Rich Primer, Two Coats Primer and Two Coats Finish 140μm |
| End Carriage Connection | 10.9 Class High-Strength Bolt Connection, Articulated Dual-Wheel Assembly Design, Single Wheel flange Wheel+Guide Roller+Wear-Resistant Bearing |
| Drive Mechanism | Integrated Three-in-One Drive(Motor+Reducer / Gearbox+Brake), Frequency conversion Stepless control, IP55/FClass Insulation/40%ED, Independent Friction Drive+Elasticity Connection |
| electrical system | Enclosed Conductor Rail Power Supply, Phase Loss Protection, PLCSynchronization Control(Multi-Crane Lifting), Anti-Vibration Contactor, Heavy-Duty Aviation Plug, IP55electrical control box |
| Lifting Point System | Adjustable Flexible Lifting Point, Effectively Counteract Horizontal Stress at Grid Roof Spherical Joints, Facilitate Maintenance Fine Adjustment, Ensure Smooth Operation |
| Travel Wheel Material | Wear-Resistant Engineering Plastic Travel Wheel, Avoid Travel Wheel andcrane runway rail Wear, Reduce Operating Noise |
| Safety Device | anti-derailment End plate, Crane Bridge / Long Travel Buffer Block, Lifting Height Limit Switch, Overload Limiter(Optional), Electronic+Machinery Dualanti-derailment |
Application Scenarios
The European-style multi-point suspension crane is specifically engineered for large-span, lightweight-roof, floor-rail-free applications. Typical use cases include:
- Aircraft maintenance hangars — suspended beneath large-span grid roofs, covering fuselage/wing/engine hoisting zones
- Aerospace assembly workshops — multiple synchronized cranes lifting rocket sections/satellite components in tandem, with PLC synchronization control for precise positioning
- Large industrial facilities — light-steel roof buildings with spans exceeding 30m, eliminating column support for maximum space utilization
- Steel fabrication shops — multi-point coverage over long production lines, streamlining material loading/unloading workflows
- Shipbuilding block assembly yards — twin-trolley, double-girder configuration for hull block turnover and closure hoisting
FAQ
Q: What's the difference between a multi-point suspension crane and a standard bridge crane?
A: The key difference lies in the support method: a standard bridge crane requires runway beams and a rail system installed on the floor, occupying valuable floor space and adding to foundation costs. A multi-point suspension crane, by contrast, is suspended directly from the roof steel structure — no floor rails needed. Furthermore, the core advantage of the multi-point design is that it "replaces floor columns with intermediate suspension points" — for extra-long spans, additional suspension points are added mid-span to enhance main girder stiffness, rather than increasing the main girder section height, which would add excessive dead weight.
Q: How do I choose between the LXD (single-girder) and DXT (double-girder) models?
A: Selection is based on lifting capacity and span: ① For lifting capacity ≤20t and span ≤30m, the LXD single-girder is more economical, offering lighter dead weight and lower wheel load; ② For lifting capacity of 20–40t or spans exceeding 30m, the DXT double-girder provides superior structural stiffness and can be equipped with twin trolleys for tandem lifting and turnover operations; ③ For aerospace/aerospace applications demanding extremely high positioning accuracy — regardless of capacity — the DXT double-girder with PLC synchronization control is the preferred choice.
Q: What are the requirements for the roof structure?
A: The roof steel structure must accommodate the crane's combined loads — including the crane's dead weight plus rated lifting capacity plus the dynamic load factor. During the design phase, structural drawings and load calculations for the roof grid/steel beams must be provided. Kelude Heavy Industry's engineering team can supply reaction force data for each suspension point to support the civil engineer's verification. For retrofit projects on existing buildings, a structural load assessment of the roof is required first — with reinforcement of critical nodes where necessary.
Q: Can you build to custom specifications? What's the lead time?
A: Absolutely — fully customizable. Lifting capacity, span, number of suspension points, lifting height, work duty, and speed parameters can all be tailored to your requirements. Standard lead time is 20–30 days (including design, fabrication, and in-house testing); custom builds add 5–15 days depending on complexity. Kelude Heavy Industry provides nationwide delivery, installation & commissioning, and a one-year free warranty. Optional add-ons include overload limiters, remote control operation, anti-sway control systems, and online monitoring systems.
Standard: GB/T 3811-2008 Crane Design Standard | Product Type: European-style suspension crane | Henan Kelude Heavy Industry Co., Ltd.
