Double-Girder Trolley Electric Hoists
A double-girder trolley electric hoist is a piece of lifting equipment matched with double-girder overhead cranes and gantry cranes, which is widely used in factories and workshops, warehouses, stockyards, ports and terminals and other places. The complete machine is mainly composed of hoisting mechanism, double-girder traveling trolley, traveling mechanism and electrical control system. It can realize vertical lifting and horizontal reciprocating movement of goods, featuring easy operation, stable operation and wide operating range, and is suitable for most conventional and heavy-duty working conditions.
As the core hoisting component, the electric hoist mostly adopts a steel wire rope drum structure. The motor drives the reducer and the drum to rotate, realizing the winding and unwinding of the steel wire rope to complete the lifting and lowering of heavy loads. The traveling trolley is mounted on the rails of the double-girder main beam. Driven by the traveling motor, its wheels move horizontally along the main beam. Coordinated with the hoisting movement, it enables multi-point and cross-regional material lifting and transportation within a large operating space, meeting various operation requirements such as assembly, handling and maintenance. The trolley can be controlled either on the ground or by remote control.
MecBase is a professional Chinese manufacturer, supplier and exporter of double-girder trolley electric hoists, providing durable, highly safe and cost-effective lifting tools for industries such as machinery processing, warehousing, manufacturing, shipbuilding, ports and terminals.
Chinese Supplier & Global Exporter of Double-girder Trolley Electric Hoist
Double-girder trolley electric hoists have significant advantages in load-carrying capacity, operational stability and operating efficiency. Compared with ordinary lifting equipment, they are more suitable for medium and large tonnage, high-frequency and high-precision hoisting needs. With high structural strength, wide application scenarios and complete safety protection, they are the ideal choice for factories, warehouses, terminals, metallurgy, machinery processing and other places to improve material transfer efficiency.
General Technical Specifications
| Item | Specifications |
| Lifting Capacity | 1t～50t (can be customized according to requirements) |
| Lifting Height | 6m～30m (special height can be customized) |
| Lifting Speed | Single speed: 0.8～8 m/min; Dual speed / Inverter: high/low speed, stepless adjustable |
| Trolley Travelling Speed | 2～20 m/min (inverter type is adjustable) |
| Power Supply | 3PH, 380V, 50Hz (other voltage can be customized) |
| Working Class | ISO M4～M6 (FEM 2m～3m) |
| Control Mode | Pendant control / wireless remote control / cabin control |
| Hoist Motor | Conical rotor brake motor / inverter motor, IP54, F class insulation |
| Travelling Motor | Soft start motor, stable operation, low noise |
| Safety Devices | Overload limiter, upper & lower limit switches, travel limit switches, phase sequence & phase failure protection, emergency stop, thermal relay protection |
| Working Environment | Temperature: -20℃～+40℃. Indoor & outdoor application, non-explosive and non-corrosive medium |
Why Choose Double-Girder Trolley Electric Hoists
- High Load Capacity: With a double-girder structure ensuring uniform stress distribution, it enables safe and reliable large-tonnage hoisting.
- Stable Operation: Features minimal sway and precise positioning, thanks to dual-speed or inverter control, greatly improving assembly and hoisting efficiency.
- Wide Operating Range: Allows free movement within the main beam span, covering the full range of material handling needs.
- Rational Structure: Boasts high durability, suitable for frequent continuous operation with low maintenance costs.
- High Adaptability: Offers customized configurations such as explosion-proof, metallurgical, anti-corrosion, and insulation options to meet specific working conditions.
Types of Double-Girder Trolley Electric Hoists We Can Supply
Double-girder trolley electric hoists are available in various types, including CD/MD type, integrated type, low headroom type, European style type, heavy-duty winch type, explosion-proof type, anti-corrosion/marine type, and metallurgical high-temperature resistant type. Choosing the right model depends on your lifting capacity, lifting height, installation space, operating frequency, and working environment, ensuring optimal performance and safety for your application.
CD/MD Type Trolley Electric Hoist
- Compact Structure: Reasonable design, compact size, light weight, easy installation and operation.
- Single & Double Speed: CD type is single-speed for general material lifting; MD type has dual speeds with a slow speed for precise positioning, suitable for assembly and equipment commissioning.
- Wide Application: Widely used in factories, warehouses, ports, power stations and other places to meet various lifting requirements.
- Stable & Reliable: Smooth running, low noise, reliable braking, ensuring safe and stable long-term operation.
- Easy Maintenance: Simple structure with standard parts, convenient for daily maintenance and low operating cost.
Integrated Trolley Electric Hoist
- Integrated Design: The hoisting mechanism and traveling mechanism are designed as an integral whole, with higher structural strength, better rigidity and more stable operation.
- Space Saving Structure: Compact integrated layout effectively reduces headroom and installation space, very suitable for narrow workshops, limited working conditions and low-headroom sites.
- Easy Installation & Operation: Integrated structure avoids complicated assembly, with simple wiring and convenient debugging, greatly improving on-site installation efficiency.
- Easy Maintenance: Fewer separate parts, reasonable layout and easy access to main components, making daily inspection, lubrication and maintenance more convenient, effectively reducing maintenance difficulty and cost.
- Smooth & Safe Running: Stable lifting and traveling performance, reliable braking, low noise and strong safety, ensuring safe and efficient operation in various working environments.
Low Headroom Trolley Electric Hoist
- Low Headroom Design: Special optimized structure for limited overhead clearance in workshops and factories, effectively increasing lifting height and space utilization.
- Compact & Optimized Structure: Compact profile, small size for easy packaging and transportation. Lightweight steel structure design reduces dead weight, relieving load pressure on the main beam and improving overall stress condition.
- Centralized Drive System: Trolley adopts centralized driving mode, ensuring excellent synchronization, stable running and low noise.
- High Stability & Reliability: Stable lifting and traversing performance, reliable braking, strong safety, suitable for long-term heavy-duty operation.
- Wide Application: Ideal for workshops, warehouses, assembly lines and other low-headroom working conditions to meet various material handling needs.
European Style Trolley Electric Hoist
- Advanced European Design: Designed and manufactured in accordance with FEM/European standards, with mature technology, stable performance and long service life.
- Modular & Compact Structure: Modular integrated design, standardized parts with strong interchangeability, convenient for upgrading, maintenance and component replacement.
- Energy-Saving & High Efficiency: Adopts frequency conversion control technology, realizing stepless speed regulation, smooth operation, low energy consumption and high working efficiency.
- Multiple Safety Protections: Equipped with overload protection, upper and lower limit switches, phase sequence/phase failure protection, emergency stop and other safety devices to ensure safe and reliable operation.
- Low Noise & Environmentally Friendly: Adopts high-precision gear transmission and optimized motor design, realizing low noise operation and improving working environment comfort.
- Stable & Smooth Running: Stable lifting and traveling, small impact, suitable for precision assembly, logistics handling and heavy-duty working conditions.
Winch Type Double-Girder Trolley Electric Hoist (For Heavy Duty & Large Capacity)
- Heavy Duty & Large Capacity: High rated lifting capacity, specially for heavy-duty scenarios, stably lifting large-tonnage materials to meet heavy industry needs.
- Winch Type Lifting Mechanism: Professional winch structure, uniform wire rope force, stable lifting and high safety.
- Steady and Efficient Operation: High-power motor with precision reducer, stable speed, no obvious vibration, high efficiency and safety.
- Multi-Layer Safety Protection: Complete safety devices for large-tonnage lifting, avoiding potential safety accidents.
- Durable and Wear-Resistant: High-strength alloy key components, suitable for long-term heavy-load continuous operation.
- Intelligent Control: Optional intelligent system, realizing remote control, precise positioning and load monitoring.
- Easy Maintenance and Durability: Optimized structure, easy disassembly and maintenance, low maintenance cost.
Explosion-Proof Double-Girder Trolley Electric Hoist
- Explosion-Proof Performance: High explosion-proof grade, suitable for flammable and explosive environments such as chemical plants and mines.
- Explosion-Proof Structure: All key components adopt explosion-proof design, effectively preventing spark generation during operation.
- Dual Safety Protection: Explosion-proof + multi-protection devices, ensuring safe operation in dangerous environments.
- Wide Adaptability: Suitable for flammable, explosive and harsh industrial sites.
- Durable and Corrosion-Resistant: Explosion-proof shell is corrosion-resistant, adapting to harsh working conditions.
Anti-Corrosion / Marine Type
- Anti-Corrosion Material & Coating: Adopts 304 stainless steel or carbon steel with anti-corrosion coating (epoxy resin/fluorocarbon coating), resisting salt spray, seawater, humidity and chemical corrosion in marine environments.
- High Protection Level: Electrical/mechanical parts adopt fully sealed design with IP66+ protection grade, preventing seawater/vapor/dust invasion and avoiding component short circuit/rust.
- Safe & Reliable Operation: Equipped with overload protection, limit switches, anti-leakage and anti-corrosion emergency stop devices, ensuring operator and equipment safety.
- Marine-Specific Structure: Compact design fits limited ship installation space; trolley uses anti-skid/anti-derailment design for stable operation on ship crane beams.
- Easy Maintenance & Durability: Key parts use wear/corrosion-resistant materials; vulnerable parts are detachable, simplifying on-board maintenance and extending service life.
Metallurgical / High Temperature Resistant Type
- High Temperature Resistant Material: Adopts high-temperature alloy and heat-insulating coating, resisting up to 600℃, suitable for metallurgical furnace, steelmaking.
- High Temperature Adaptability: Anti-thermal deformation, anti-oxidation, stable in high-temperature, high-dust, high-radiation metallurgical environments.
- Safe Protection: Equipped with high-temperature resistant limit switch, overload protection and high-temperature alarm, ensuring safe operation.
- Metallurgical-Specific Structure: Compact, fits narrow space; trolley has anti-dust design to avoid clogging.
- Easy Maintenance: Wear/high-temperature resistant key parts; detachable vulnerable parts, facilitating on-site maintenance.
Main Applications
- Machinery Processing and Equipment Manufacturing Workshops: Used for machine tool installation, mold hoisting, parts transfer, heavy workpiece assembly, etc.
- Factory Warehouses and Logistics Yards: Suitable for loading, unloading, handling and stacking of heavy goods such as steel, pipes, plates and finished products.
- Ports, Terminals and Freight Stations: Used for auxiliary loading and unloading of containers and hoisting of large goods, adapting to outdoor large-span and large-tonnage operations.
- Metallurgy, Casting and High-Temperature Places: High-temperature resistant type can be selected for hoisting high-temperature materials such as steel billets and castings.
- Chemical, Petroleum and Other Flammable and Explosive Places: Equipped with explosion-proof type, it can work safely in flammable and explosive gas and dust environments.
- Electric Power, Water Conservancy and Construction Sites: Used for equipment maintenance, hoisting of heavy components, lifting of construction materials, etc.
- Food, Pharmaceutical and Other Industries with Anti-Corrosion Requirements: Adopting anti-corrosion or stainless steel structure, it can be used in humid and corrosive environments.
Get Your Double-Girder Trolley Electric Hoists Quote & Technical Solution
FAQs About Double-Girder Trolley Electric Hoists
The rated lifting capacity is usually 1 t to 50 t (can be customized up to 100 t or more according to actual working conditions). Among them, 1-50 t is the conventional tonnage, suitable for most industrial scenarios; above 50 t is large tonnage, suitable for heavy-duty needs such as ports and shipbuilding.
It is mainly adapted to double-girder overhead cranes and gantry cranes. The corresponding trolley size and installation method can be customized according to the main beam span and working class of the crane to ensure synchronous and stable operation.
It is necessary to comprehensively select according to the rated lifting capacity, operation frequency, plant height, environmental characteristics (such as high temperature, explosion-proof, anti-corrosion) and control mode (manual, remote control, frequency conversion). The classic steel wire rope type can be selected for conventional working conditions, and the corresponding special type needs to be customized for special environments.
Under conventional working conditions, daily inspection is conducted once a day (checking steel wire ropes, hooks, and moving parts); regular maintenance is conducted once every 3 months (lubrication, fastening, and electrical system inspection); annual maintenance is conducted once to ensure safe operation of the equipment.
Special configurations such as explosion-proof, metallurgical high-temperature resistance, anti-corrosion, insulation, remote control, double hoist synchronization, and low headroom can be customized to meet the personalized operation needs of different industries and environments.
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