HD Type European Electric Single-Girder Crane
The HD-type European-style Electric Single-Girder Crane features a reinforced main girder design, with a lifting capacity range of 1 to 32 tons and spans up to 28.5 meters, making it suitable for medium-to-heavy material handling applications. Building on the compact European design, this model enhances the load-bearing capacity of the main girder and is paired with a heavy-duty European-style electric hoist, achieving a hoist duty classification of up to A5. Standard equipment includes variable-frequency speed control and multiple safety protection devices, making it an ideal choice for medium-to-large workshops and warehousing scenarios. Kelude Heavy Industry's HD series has been widely adopted in industries such as heavy machinery processing, steel structure fabrication, and mold manufacturing.
The HD-type European-style Electric Single-Girder Crane, also known as the HD-type Electric Single-Girder Bridge Crane, is currently a technologically advanced product in the single-girder crane category. Designed in accordance with international standards including DIN (Germany), FEM (Europe), and ISO, it offers exceptional rigidity, reduced dead weight, and superior structural design, effectively saving factory space and investment costs.
Performance Features
International Standard Design: Strictly adheres to DIN, FEM, and ISO international standards, as well as national standards such as GB/T 3811, GB/T 14405, and JB/T 1306. Critical load-bearing components are designed for infinite fatigue life, with safety factors ≥5 for the hoisting mechanism and ≥1.5 for structural parts. The overall design service life is ≥25 years, and the main steel structure is warranted for 15 years under normal operating conditions.
Compact Structure, Light Dead Weight: Utilizes modular design and FEA optimization. The main girder features an optimized box-section profile with a high proportion of high-strength steel (Q355B/Q420B). Compared to traditional LD-type single-girder cranes, the dead weight is reduced by 20-30%, and wheel loads are lowered by 15-25%, significantly reducing the construction cost of the factory's runway beams and columns. For retrofit projects in existing factories, this allows for capacity upgrades without the need for structural reinforcement.
Variable Frequency Speed Control, Precise Positioning: The hoisting, long travel, and cross-travel mechanisms are all standardly equipped with variable-frequency speed control systems, offering a speed ratio of 1:10. Hoisting speed is 5/0.83m/min (two-speed pole-changing motor), and long travel/cross-travel speeds are 20/5m/min (variable frequency two-speed). Combined with electrical anti-sway control, the load sway after stopping is limited to ≤±50mm, enabling high-precision positioning of suspended loads. Automatic speed reduction during heavy loads and rapid operation during light loads improve operational efficiency by 15-20%.
Maintenance-Free, Low Operating Costs: The gearbox utilizes hardened tooth flank ground gears (Grade 6 accuracy, hardness HRC58-62), achieving a transmission efficiency of ≥95% and a service life 2-3 times longer than soft tooth flank gearboxes. The wheels are made of 45# forged steel (tread surface hardened by quenching to HRC45-50). The total installed power is 15-20% lower than traditional models, and the variable frequency system can save 20-30% energy compared to fixed-speed operation. Based on an 8-hour working day, a 5-ton model can save approximately 5000 RMB in electricity costs annually.
Technical Parameters
| Parameter Project | Specification/Value |
|---|---|
| Lifting Capacity | 0.5~20T |
| Work Duty / Classification | A5(Customizable A3~A7) |
| Lifting Speed | 5/0.83 m/min(Pole-Changing Two-Speed) |
| crane travel speed | 20/5 m/min(Frequency conversion Two-Speed) |
| Trolley / Cross Traveltravel speed | 20/5 m/min(Frequency conversion Two-Speed) |
| Lifting Height | 6~18m(Customizable on Request) |
| Span | 7.5~31.5m |
| Ambient Temperature | -10°C~+40°C |
| Relative Humidity | ≤85% |
| Power Supply Power Supply | AC 380V±10% 50Hz, Three-Phase Four-Wire |
Structural Composition
The HD-type European Electric Single-Girder Crane consists of the following major components:
Technical Director's Comment — Kelude Heavy Industry
"The HD-type European Electric Single-Girder Crane is our reinforced product line specifically engineered for heavy-duty applications. Taking our supply of 8 units of HD10-22.5m to a steel structure company as an example, the customer operates over 200 lifting cycles per day with a work duty classification of A5. We adopted a reinforced main girder (Q420B steel plate) paired with a heavy-capacity European-style electric hoist, achieving a design service life of ≥20 years. Inspection data after two years of operation shows main girder deflection variation within 0.5mm — far superior to the GB/T 14405 standard requirements."
— Mr. Li, Technical Department, Kelude Heavy Industry
- Main Girder: Optimized box-section or H-Beam construction, steel plate grade Q355B/Q420B, weld seams subject to Non-destructive testing per GB/T 3323 (inspection ratio ≥20%). After welding, the entire girder undergoes Shot Blasting (Sa2.5 grade), followed by Epoxy Zinc-Rich Primer + Epoxy MIO Intermediate Coat + Acrylic Polyurethane Topcoat (total film thickness ≥120μm), providing anti-corrosion life of ≥10 years.
- End Carriage: Welded steel plate structure, equipped with driven and Driven Wheel assemblies. Wheels are made of ZG50SiMn Cast Steel or 45# Forged Steel, with tread surface hardened by Quenching to HRC40-50. End carriages are connected with 10.9-grade High-Strength Bolts, ensuring high shaft alignment accuracy and easy disassembly.
- Electric Hoist: Paired with a European-style electric hoist (wire rope type), featuring a conical rotor Hoisting Motor (Class F insulation, IP55 Protection) and a DC disc Brake (braking Safety factor ≥1.75). Wire Rope is selected per GB/T 8918 as line-contact rope with a Safety factor ≥6.
- Electrical Control System: The main Control Cabinet integrates PLC and Frequency Inverter / VFD, with reserved Profinet/Modbus TCP remote communication interfaces for connection to factory MES/SCADA System. Control Cabinet Protection Rating (IP) is IP54, with internal components from brands such as Schneider, Siemens, and CHINT.
- Safety Devices: Overload Limiter (110% alarm / 125% cuts off hoisting circuit), travel limit switches for all mechanisms, Emergency Stop Button, Phase Loss Protection, Overload Protection, Zero Position Protection, Undervoltage Protection, etc., compliant with GB/T 28264 Safety Monitoring and Management System and TSG Q7016 requirements.
The work of the characteristics of
The work of the characteristics of the HD-type Electric Single-Girder Crane is intermittent motion — within one Duty Cycle, it completes loading, transporting, and unloading actions, with each mechanism operating alternately. The lifting attachment picks up the load from the pickup point, moves it horizontally to the designated location, lowers it, and then returns in reverse motion to the original position, constituting one complete Duty Cycle of the crane.
The entire crane utilizes hardened tooth flank ground Gear Gearbox / Reducer (transmission efficiency ≥95%), Forged Steel wheels (Surface Hardening hardness HRC45-50), steel Drum, and heavy-duty Brake, resulting in extended maintenance intervals and approximately 30% lower lifecycle maintenance costs compared to conventional cranes. Recommended maintenance schedule: Daily Inspection once per shift, first-level Maintenance monthly, second-level Maintenance semi-annually, and Overhaul every 3–5 years.
Applicable Scenarios
The HD-type European Electric Single-Girder Crane is widely applicable across the following industries and scenarios:
- Machinery Manufacturing: Material Handling and equipment Hoisting in machining and Assembly Workshops, with Lifting Capacity of 5–20t.
- Metallurgy & Steel: Loading/unloading of billets and Steel in steel mill Warehouses, used in conjunction with Lifting magnet or C-Hook.
- Petrochemical: Hoisting of equipment and pipe fittings in chemical Factory buildings and Warehouses (Explosion-proof configuration optional, ExdⅡBT4).
- Port & Railway: Daily Hoisting operations in maintenance shops and supply Warehouses.
- Power & Energy: Hoisting of equipment and Spare parts in Power Plant maintenance shops and equipment Warehouses.
- Food & Paper: Material Handling in raw material and Finished Goods Warehouses, with optional Stainless Steel Hoisting mechanism and Food-grade grease.
- Building Materials & Electronics: Precision equipment installation and material transfer within Factory buildings.
Kelude Heavy Industry provides full-process services from solution design, non-standard customization, manufacturing and installation, to TSG inspection. For non-standard configurations (special Span/height/Explosion-proof/Anti-corrosion, etc.) or supporting products such as LDC Type European Electric Single-Girder Crane and LX Type European Electric Single-Girder Suspension Crane, please contact the Technical Department for a solution.
Kelude Heavy Industry · Lifting & Handling Solutions · Technical consultation · Custom Quotation
FAQ
Q: What are the differences between the HD type and the LDC type?
A: The HD type features a reinforced design with a Q420B high-strength Steel Plate main girder (LDC type uses Q355B), offering a higher Lifting Capacity (max 32t vs 16t), longer Span (max 28.5m vs 25.5m), and higher Work Duty / Classification (A5 vs A3/A4). The HD type is intended for heavy-duty, high-frequency applications, while the LDC type suits conventional light-duty conditions.
Q: What factory building height is suitable for the HD type?
A: The standard configuration suits Factory buildings with Headroom ≥6m. For Lifting Capacity ≤16t, a minimum Headroom of 6m is recommended; for 20–32t, a minimum Headroom of 8m is recommended. For lower-clearance factory buildings, Kelude Heavy Industry can customize a low-headroom solution (height above the rail surface can be reduced to 1.2m). buildings, Kelude Heavy Industry can customize a Low headroom solution (height above rail level can be reduced to 1.2m).
Q: Does this model support Remote Monitoring?
A: Yes. The HD series comes standard with PLC programmable control and Provision Profinet/Modbus TCP remote communication interfaces, allowing integration with MES or SCADA systems. An optional Kelude Heavy Industry IoT cloud monitoring module enables real-time operational data collection, fault alerts, and maintenance reminders. The IoT module supports 4G/5G/WiFi connectivity, and equipment status can be viewed anytime via mobile devices.
Q: Does the 32t HD model require a double-girder configuration?
A: When the lifting capacity is ≥20t and the span is ≥22.5m, the HD series can be configured with either a reinforced single-girder or a double-girder design. For lifting capacities ≤20t, a single-girder configuration is recommended. For capacities between 20–32t, the choice depends on the span — spans ≤22.5m can use a reinforced single girder, while spans >22.5m are better suited to a double-girder design. Kelude Heavy Industry offers free application assessments.
