KBK rigid crane

High‑precision, High‑stability Heavy‑duty Handling Expert
Lifting Capacity: 0kg~3000kg, especially suitable for lifting tasks of large workpieces, precision equipment or loads with impact force.
Available Span: Maximum up to 11m. Rigid connection structure ensures low deflection under large span for smooth and shake‑free operation.
Operation Mode: Driven by frequency‑conversion motor‑reducer inside integrated rigid track. Electric trolley with variable frequency speed regulation delivers shock‑free start‑stop and high positioning accuracy, ideal for processes requiring precise alignment.
Application Sites: Widely used in automotive component assembly, mold change‑over, machine tool loading/unloading, wind‑power equipment maintenance and other scenarios with strict requirements for positioning and stability.
Core Value: Rigid design eliminates the swinging issue of flexible track systems, greatly reducing workpiece collision risks and improving operational safety. Low maintenance under high‑frequency operation brings 20%~40% improvement of overall long‑term system efficiency.

Quick Detail:
KBK rigid combined crane is a modular, high‑strength, heavy‑load light‑duty lifting equipment for heavy‑workpiece handling and high‑frequency material transportation. The system consists of modular components including high‑strength enclosed steel rails, rigid truss structures, travelling trolleys, electric hoists and control systems. Different from flexible KBK systems, rigid connections are adopted between I‑beam and profile rail, as well as between profile rail and main beam, to guarantee smooth travel and accurate positioning. The rails adopt enclosed C‑type and D‑type high‑strength cold‑rolled steel profile for effective dust & foreign‑matter resistance and reduced friction. Both suspended and free‑standing installation modes are supported. Max. lifting capacity reaches 3000kg, main beam length up to 11 m, and track suspension spacing can be 10 m or more. The rigid track system is particularly fit for low‑height workshops and high‑frequency working scenarios requiring large‑span and heavy‑load handling.

Description:
KBK rigid combined crane is a new‑generation high‑strength light‑duty lifting equipment developed based on traditional flexible KBK systems. Its tracks and main beams are made of enclosed high‑strength cold‑rolled steel with modular production and assembly for reliable and consistent quality. Maximum lifting capacity is 3000kg with wide application range, especially for modern machining, assembly, warehousing and other advanced production lines. Rigid connections are applied between I‑beam and profile rail, and between profile rail and main beam within the rigid combined system.
Low‑headroom Design: Equipped with embedded hanger structure, it saves considerable headroom compared with flexible KBK systems, suitable for low‑height workshops with limited floor‑to‑ceiling space;
Thirdly, Precise Positioning: Synchronized left‑right travel of main beam enables accurate positioning for precision assembly operations;
Fourthly, Higher Safety Performance: Rigid connections resist loosening and falling off. Trolleys are fitted with side‑flange safety devices to stay safely engaged on rails even in case of wheel damage, preventing falling accidents;
Fifthly, Genuine Free‑standing Structure: No additional I‑beam supporting girders required. Longer support centers cut steel structure consumption.
KBK rigid combined crane features full‑bolt modular connection without on‑site welding. Track length can be extended/reduced, layout modified or the whole system relocated to adapt to production‑line upgrades. High‑strength rails and expandable truss‑rail structure remove the need for extra I‑beam suspension, lowering overall dead weight and building‑load requirements. Stable operation is available within wide temperature range from ‑20°C to +50°C with IP55 protection grade, adapting to various industrial environments.

Applications:
KBK rigid combined crane is widely adopted in the following sectors:
Heavy‑duty Machinery Manufacturing & Machining: Handling and hoisting of large parts, molds, engine housings and other heavy‑duty workpieces between workstations.
Automotive Manufacturing & Assembly Lines: Precise lifting and assembly of engines, gearboxes, vehicle frames and other heavy components on final assembly and machining lines.
Logistics Warehousing & Distribution Centers: Stacking, loading‑unloading and sorting of heavy goods to boost warehouse turnover efficiency.
Shipbuilding & Heavy Industry: In‑shop transportation and assembly of ship‑use parts and large structural components.
Low‑height Workshops & Space‑constrained Sites: Beam‑free rigid cranes are specially designed for workshops under 3 m ceiling height, saving more than 30% headroom versus conventional rigid cranes.
High‑frequency Handling Operations: Production‑line scenarios demanding frequent and repetitive material hoisting.
Mold Industry: Transportation, turnover and assembly of large‑size molds.
Laboratories & Precision Assembly: High‑precision positioning capability for assembly tasks requiring accurate alignment.

Specifications:

Competitive Advantage:
Rigid Connection for Stable and Precise Operation: Rigid connections are adopted between I‑beams and section rails, as well as between section rails and main beams. The main beams travel synchronously left and right with accurate positioning without asynchronous movement. The enclosed high‑strength rigid rail ensures shake‑free operation, suitable for heavy‑duty workpieces and high‑precision handling operations.
Ultra‑Low Headroom for Maximum Space Utilization: Adopting embedded hanger design, it saves substantial headroom compared with flexible KBK systems. The beam‑free design eliminates the conventional main beam structure; the hoist is directly suspended beneath the rail, saving more than 30% headroom versus ordinary rigid cranes, perfectly matching low‑rise workshops with a floor height below 3 m.
Enhanced Safety Performance: Rigid connections resist loosening and falling off. Section rail trolleys are equipped with side‑flange safety devices. Even if wheels are damaged, the trolley can remain securely engaged on the rail to prevent falling accidents. Multiple safety features are integrated, including overload protection, upper‑lower limit protection and power‑off self‑locking protection.
Steel Structure Saving and Lower Building Load Requirement: Featuring a genuine self‑standing structure, no additional I‑beam secondary support is required. Designed with high‑strength rails and expandable truss structure, extra I‑beam hangers are eliminated to reduce overall self‑weight and lower load‑bearing requirements for the factory building.
Modular Design for Flexible Modification: Full‑bolt connections without welding. Rail length can be adjusted, layouts modified or complete relocation performed at any time to accommodate production‑line upgrades, featuring low modification cost and short lead time. Wide‑range installation options enable configuration of complex crane systems.
Easy Installation for Fast Commissioning: No complicated civil foundations are needed. Modular assembly allows professional teams to finish installation and commissioning rapidly. It is applicable for both new workshops and retrofitting & extension of existing systems.
Durable, Reliable and Easy‑to‑Maintain: The enclosed rail design effectively keeps out dust and foreign debris, reduces frictional resistance and lowers failure rates. It can operate stably long‑term within a wide temperature range from ‑20°C to +50°C, backed by a 1‑year complete‑machine warranty.

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