European style double girder bridge crane, the span can be customized

Product Introduction

This full crane consists of a double-girder main beam, end beams, a European-style hoisting trolley, and a 3-in-1 drive system. Its hoisting mechanism is integrated with the trolley frame and moves along the track on top of the main beam. Working in tandem with the trolley, the crane travels longitudinally along the plant tracks, while the hoist vertically lifts loads, forming a three-dimensional lifting and transport coverage that can accurately deliver heavy workpieces to any work position in the workshop.

Structural Composition

Main Girder:Double-box welded structure, off-center or straight rail layout, optimized via finite element analysis, coated with yellow warning paint.

End Beam:Connecting beams at both ends of the main girder, equipped with built-in traveling wheels, buffers, and rail sweeper plates.

European-style Hoisting Trolley:Hoisting mechanism integrated into the trolley frame, including the drum, wire rope, and hook assembly, traveling along the track above the main girder.

Bridge Travel Mechanism:"Three-in-one" drive (motor, reducer, and brake integrated), frequency-controlled speed regulation, double-sided drive.

Trolley Travel Mechanism:"Three-in-one" drive, frequency-controlled speed regulation, precise positioning.

Electrical Control System:Variable frequency control cabinet, PLC or dedicated controller, IP54 protection rating.

Power Supply System:Safety conductor rail/angle steel conductor rail/flat cable, equipped with a current collector.

Control Method:Wireless remote control/operator's cabin/pendant control (optional).

Safety Devices:Hoisting upper and lower limiters, travel limit switches, overload limiter, power-off brake, buffer stopper, audible and visual alarm.

Working Principle

The European-style hoisting trolley completes the vertical lifting and lowering of heavy loads; the trolley travels horizontally along the track above the main girder; the end beam wheels drive the entire machine to move longitudinally along the workshop's longitudinal rails. All three directions are driven by variable frequency, forming a three-dimensional lifting space covering the entire workshop span, enabling the lifting, movement, and precise placement of workpieces from any ground position. Variable frequency control allows controllable start-stop acceleration, and with the optional electronic anti-sway function, heavy loads experience virtually no air sway, significantly improving placement efficiency and safety.

Core Advantages

Lightweight Design:Structural optimization reduces self-weight by 15%–30% compared to traditional double girders, lowering wheel pressure and simultaneously reducing investment in the workshop's steel structure and track foundation.

Low Headroom and High Lift Height:The integrated trolley layout reduces the overall machine height, providing greater effective lifting height for the same workshop height, eliminating the need for height increases when renovating old workshops.

Smooth Frequency Control:Full variable frequency speed regulation for hoisting and travel, no impact during start-stop, and no load sway; optional electronic anti-sway for precise positioning without damaging workpieces.

High Load Capacity and Large Span:Double-box girder structure, 5–100 ton capacity, spans up to 31.5m or more, suitable for large-span heavy-duty workshops.

High Working Class:Up to A5–A6 (FEM 2m/3m), adaptable to high-frequency continuous operation with a longer service life.

Multiple Machines Sharing the Same Track (As Shown in Figure 12):Multiple machines can be arranged in the same span, covering adjacent areas without mutual interference, resulting in high material flow efficiency in long workshops.

Comprehensive Safety Features:Multiple limit switches, overload protection, power-off braking, and buffer stoppers are standard, with optional anti-collision laser sensors and area protection.

Economical Maintenance:The three-in-one drive and European-style hoisting trolley are modular and universally compatible components, making maintenance convenient and downtime short.

Application Scenarios

Workpiece hoisting in heavy machinery machining workshops; component transfer on large equipment assembly lines; loading and unloading of steel structure components and profiles; mold flipping and closing; pressure vessel, boiler, and wind power component manufacturing; warehousing and logistics of heavy cargo inbound/outbound; auxiliary equipment workshops for metallurgy, power, and building materials industries; equipment maintenance and large unit installation hoisting.

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The main beam of the machine runs suspended under the I-beam track on the roof, eliminating the need for additional brackets and track beams on the columns and saving ground space. It requires minimal factory renovation and has a short installation period, making it particularly suitable for steel structure workshops with limited roof truss load-bearing capacity.

Detail