Electric Double Girder Crane End Carriage
1. Structural design
Box-type structure: usually steel plates are welded into a box-type
structure to ensure high strength and rigidity, and effectively
carry the load transmitted by the main beam.
Modular design: The end beam is often connected to the main beam by
bolts, which is convenient for transportation, installation and
later maintenance, and meets the needs of different spans.
Open layout: The open design makes the internal walking mechanism
of the end beam (such as wheel set, motor) easier to repair and
reduce the difficulty of maintenance.
2. Functional components
Traveling mechanism integration: including motor, reducer, brake
and wheel set, driving the crane to run along the track. Common
three-in-one drive form, compact structure.
Safety device: equipped with buffer (rubber or polyurethane) to
absorb collision energy, limit switch to prevent overtravel, ensure
safe operation.
Track adaptability: wheel tread matches the track (such as QU
track), some designs contain horizontal wheels to enhance the
ability to resist eccentric load.
3. Materials and processes
Steel selection: Q235B or low alloy steel is mostly used. Cast
steel (ZG270-500) may be used for key parts (such as wheel bearing
seats) to improve durability.
Surface treatment: Anti-rust paint or epoxy resin is applied after
sandblasting to enhance corrosion resistance and extend service
life.
4. Drive mode
Separate drive: The end beams on both sides are driven by
independent motors, with high requirements for synchronous control,
reducing the need for traditional drive shafts and simplifying the
structure.
5. Application advantages
Strong bearing capacity: The design takes into account the main
beam load and dynamic load coefficient, and is suitable for large
tonnage (such as 10t to hundreds of tons) and large span
conditions.
Wide adaptability: Commonly used in scenes such as factories,
warehouses, ports, etc., especially suitable for environments that
require frequent maintenance or limited space.
