PROJECT NAME: Single-girder bridge crane JMD 3,2 t / 14 m

INVESTOR: Scania Srbija Ltd.

LOCATION: Krnješevci, Serbia

YEAR OF PRODUCTION: 2019.

TECHNICAL CHARACTERISTICS:

• maximum crane capacity: 3,2 t
• bridge span: 14 m
• lifting height: 6,08 m
• load lifting speed (frequency reg.): 5,2/0,4 m/min
• hoist travel speed (frequency reg.): 24/2,4 m/min
• bridge travel speed (frequency reg.): 40/10 m/min

TECHNICAL DESCRIPTION:

For the needs of the investor, the company Scania Srbija 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 3,2 t, and the span of the bridge is 14 m, while the lifting height is 6,08 m. The crane is mounted on the crane tracks in the investor's hall.

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 by means of a suspended control button with reduced voltage.

A single-girder bridge crane consists of:

• steel structure, consisting of:
  • main girder derived from HEA profile,
  • end carriages,
• electric driving hoist,
• 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 a brake for driving the bridge,
• control cabinet,
• limit switches for switching off the lifting/lowering drive, the hoist drive and the bridge drive,
• suspended cable control button with reduced voltage,
• main switches, and
• power and control cables within the crane itself.

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