PROJECT NAME: Single-girder bridge crane JMD 2,5 t / 5 m

INVESTOR: Scam marine Ltd.

LOCATION: Viškovo

YEAR OF PRODUCTION: 2018.

TECHNICAL CHARACTERISTICS:

• maximum crane capacity: 2,5 t
• bridge span: 5 m
• lifting height: 3,7 m
• load lifting speed (frequency reg.): 6,6/1,1 m/min
• hoist travel speed (frequency reg.): 24/4 m/min
• bridge travel speed (frequency reg.): 30/8 m/min

TECHNICAL DESCRIPTION:

For the needs of the investor, the company Scam marine Ltd., a project of a single-girder bridge crane was made, and it was produced and installed. The maximum load capacity of the crane is 2,5 t, and the span of the bridge is 5 m, while the lifting height is 3,7 m. The crane is mounted on the crane track in the production hall of the investor.

All working movements of the crane: driving the bridge, suspended trolleys and lifting/lowering the load, are electromotor-driven, and are performed in two speeds controlled by a frequency converter, which ensures soft starting, soft transition between speeds and soft stopping without dynamic shock.

The crane is operated from the floor using a suspended control button with reduced voltage.

A single-girder bridge crane consists of:

• steel structure, consisting of:
  • main girder produced from HEA profile,
  • end carriages,
• electric driving hoist, and
• electric installations.

The electrical equipment of the crane consists of:

• electric motor of the lifting mechanism with brake,
• electric motor with brake for driving a hoist,
• two electric motors with brakes for driving the bridge,
• control cabinet,
• limit switches for switching off the lift drive, the hoist drive and the bridge drive,
• suspended control button with reduced voltage,
• main switches, and
• power and control cables within the crane itself.

At the ends of the crane tracks, steel bumpers were installed as a safety against the crane falling off the tracks. In the same way, the movement of the driving hoist along the main girder is limited.