Стандартны двухбалкавы паўпартальны кран FEM: меншая ўласная вага, большая грузападымальнасць

The FEM standard double-girder semi-gantry crane is upgraded from the MGB double-girder semi-gantry crane, retaining its high load capacity and structural stability while reducing self-weight and improving headroom, travel smoothness, and operating efficiency. Its components, structural layout, safety systems, and controls can be configured to meet European inspection and acceptance requirements.

Key Features of FEM Standard Double-Girder Semi-Gantry Crane

• Lightweight design: Through 3D modeling, finite element analysis, and high-strength materials, the main girders are approximately 15%-30% lighter than those of the MGB double-girder semi-gantry crane.
• Double-girder load support: The double-girder structure provides stable support for medium-to-heavy loads, heavy equipment, and larger-span lifting operations.
• Compact structure: Smaller hook approach distances and reduced height above the rail expand the working range and improve workshop space utilization.
• Lower operating costs: Wheel loads are approximately 10%-35% lower than those of the MGB double-girder semi-gantry crane. Compact dimensions, reliable components, and lower installed power help reduce construction, energy, and maintenance costs.
• Convenient operation: Supports ergonomic pendant controls, an LCD load display, and optional push-button or joystick wireless remote controls.
• Precise positioning: 1:10 variable-frequency control improves speed adjustment and reduces overtravel, while anti-sway technology further increases load-positioning accuracy.

FEM Standard Double-Girder Semi-Gantry Crane Core Components

Lower- and medium-capacity models use a double-girder trolley FEM standard hoist, while higher-capacity models use a compact open winch trolley.

Compact Open Winch Trolley

The compact open winch trolley combines an optimized structural layout with integrated drives to reduce trolley height, self-weight, and wheel loads while providing high-capacity lifting for double-girder cranes.

• Lightweight structure: Both ends of the drum are supported directly by the trolley-frame end beams. The three-point mounting structure reduces unnecessary bases and supports, helping lower trolley height, self-weight, and crane wheel loads.
• Supports high-capacity lifting: The short-shaft welded drum and hardened-gear reducer, with a gear-surface hardness of HRC60, provide the high torque and reliable power transmission required for heavy-load lifting.
• High-strength travel wheels: The forged wheels have a flange and tread hardness of HB330-380, enabling them to withstand wheel loads generated by the trolley and suspended load during heavy-duty cross travel.
• Smooth heavy-load travel: The three-in-one direct drive and 1:10 variable-frequency speed control adjust travel speed according to load conditions, enabling low-speed travel under heavy loads and reducing starting and stopping impact on the trolley, girders, and rails.

Double-Girder FEM Standard Hoist Trolley

The double-girder trolley with FEM standard hoist operates between the two main girders and provides the crane with vertical lifting and cross travel. Its wire rope, rope guide, dual-speed motor, and braking system directly affect the crane’s lifting stability, positioning control, and operating safety.

• High-strength wire rope: The 2160 N/mm² wire rope supports the lifted load and provides the crane with reliable lifting capacity.
• Wear-resistant rope guide: The self-lubricating rope guide reduces wire-rope wear, helping the crane maintain stable reeving and lowering maintenance requirements.
• Dual-speed hoisting motor: The 1:6 speed ratio allows the crane to lift efficiently at normal speed and place loads more accurately at low speed. Independent cooling and thermal protection support frequent operation.
• Double-disc electromagnetic brake: Automatic braking during power loss helps the crane hold suspended loads safely, while wear monitoring supports reliable long-term braking.

Інтэграваны прывад крана

The crane and trolley travel mechanisms of the FEM standard double-girder semi-gantry crane use integrated three-in-one direct-drive units that combine the motor, hardened-gear reducer, and brake in compact assemblies. The reducer features hardened gears with a surface hardness of at least 60 HRC and a lightweight, fully sealed aluminum-alloy housing, supporting efficient, stable, and durable crane travel.

• Improved transmission efficiency: The direct-drive structure reduces intermediate transmission components and power loss. Combined with the hardened-gear reducer, it provides a transmission efficiency of more than 95% and improves crane travel response.
• Ніжэйшы ўзровень адмоў: інтэграцыя рухавіка, рэдуктара і тормазу памяншае колькасць муфт і злучальных кампанентаў, мінімізуючы патэнцыйныя кропкі адмовы і паляпшаючы стабільнасць руху крана і каляскі.
• Большы тэрмін службы: Высокацвёрдыя шасцярні забяспечваюць большую грузападымальнасць і зносаўстойлівасць, падаўжаючы тэрмін службы ў 2-3 разы ў параўнанні з традыцыйнымі рэдуктарамі з мяккімі зуб'ямі.
• Reduced lubrication maintenance: The fully sealed housing provides sufficient lubrication for the internal gears. No lubricant replacement is required during the designed safe service period, reducing maintenance and equipment downtime.
• Lightweight and corrosion-resistant: The aluminum-alloy housing reduces the weight of the travel mechanism while providing corrosion resistance in humid or mildly corrosive industrial environments.

Высокатрывалыя легкосплавные дыскі

The FEM standard double-girder semi-gantry crane uses forged wheels with a flange and tread hardness of HB330-380, providing reliable support for heavy-load crane and trolley travel.

• Withstands heavy wheel loads: The forged structure provides sufficient strength to withstand the crane’s dead weight, lifted load, and impacts generated during starting and stopping.
• Maintains stable heavy-load travel: The hardened flanges and treads help maintain stable wheel-rail contact, allowing the crane to travel smoothly along the rails under heavy loads.

Applications of the FEM Standard Double-Girder Semi-Gantry Crane

Production-Line Material Handling Inside Workshops

The FEM standard double-girder semi-gantry crane can be installed in machining and equipment-assembly workshops to lift and position raw materials, large components, tooling, molds, and semi-finished products between workstations. One side travels along the existing workshop runway structure, while the other is supported by a leg running on a ground rail. This arrangement is suitable where the workshop can provide support on only one side or where an independent working area is required beneath an existing overhead crane.

Material Transfer Near Workshop Buildings

The FEM standard double-girder semi-gantry crane can also be installed along an exterior workshop wall to transfer materials between the building and an adjacent storage yard, loading area, or warehouse. One side runs on the workshop runway beam, while the supporting leg travels along a ground rail, allowing the crane to cover an outdoor area next to the building. It can handle steel, large components, machinery, and finished products while supporting stacking, transfer, and vehicle loading or unloading. This arrangement extends the workshop’s material-handling coverage outdoors and reduces repeated material transfers.

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