LD Model Electric Single Girder Crane

Introduce

LD model electric single girder crane is a crane for general use. It is used in machinery manufacture, assembly, warehouse and other places. It is a kind of light and small crane with track operation. And LD model electric single girder crane is matched with CD and MD model electric hoist, the lifting capacity is 1t-20t, the span is 7.5-28.5m, the working class is A3-A4, and the working environment temperature is -25℃-40℃. Not suitable for explosive, fire hazards, relative temperature greater than 85% and corrosive gases filled place. It is also not suitable for lifting molten metals and poisonous, flammable, explosive materials.

Function

LD model electric single girder crane is installed on the both sides of crane beam in plant where is the crane can be transversely driven on the track laid, and make the trolley runs along the trolley track. The hook is matched with CD1 (or MD1) electric hoist, so as to complete the lifting, translating and other operations for heavy objects.

Characteristic

LD model electric single girder crane has the advantages of simple structure, light weight, small load for plant, low building height and low power consumption. The main beam and the end beam are bolted, it makes assemble, transport and store easily. The crane is easy to supply with spare parts, small wheel pressure and good manufacturability, suitable for automatic welding and line production, makes the installation more fast, maintenance more convenient. Less lifting capacity is the weakness of LD model electric single girder crane.

Composition

1. Electric hoist

   The electric hoist is used for lifting objects and lifting along the spanning direction. Electric hoist installed with two squirrel cage motors, one belongs to hoisting mechanism, the other belongs to operation mechanism. It is also equipped with four tapered wheels, and through those wheels the electric hoist can be hung on the lower wing of I-beam.

2. Metal mechanism bridge frame.

   Bridge frame of LD model electric single girder crane including main beam and end beam, the main beam is composed of U shaped channel steel and I-beam, the end beam is made of U shaped channel steel. All the metal mechanism bridge frames of the LD model electric single girder crane are welded connection.

3. Crane travelling mechanism

   The traveling mechanism of the crane is driven directly by the driving device to run the wheel (driving wheel), the driving device is composed of motor and speed reducer, the brake controls the motor through the electrical part.

4. Electric control system

   Operation of LD electric single beam cranes in two different ways, control room handling and ground handling. The end of the bridge frame is equipped with a control room if need to operate, in the control room is provided with control cabinet, control box, controller for crane driving motor and control button of electric hoist. Using button control and operation if handling ground.

   The electric conduction device what mounted at the end of the bridge frame to inject electric current into the crane. Limited switch is set at both side of the end beam of the crane. Electric hoist is equipped with lifting height limiter. When the limited switch is switched off, then the current is cut off, when the power is switched on again, the mechanism can only turn in the negative direction.