Lifting Capacity 20 Ton Double Dirder Bridge Crane

Lifting Capacity 20 Ton Double Dirder Bridge Crane
Part 1: Description and Application
 
Double Girder Overhead Cranes give a better height of lift in given headroom as the hook travels between the beams. With open winch trolley as its lifting mechanism, they are available in higher capacities than single girder and for heavy duty applications.
Overhead Cranes are available with a huge range of custom options in capacities up to 700t and span up to 60m, helping with all dependable material handling solutions. Our crane provides an excellent overall value.
They are also cab be Custom Designed for severe applications and harsh environments.

Part 2: Detailed Configuration:

 1- Lifting Mechanism
-open winch trolley combined with motor, gearbox, hydraulic brake, drum, hook, sheaves, coupling, brake drum etc.
-Rigid box type trolley frame
– Wound Rotor 3-phase asynchronous motor
– Harden Teeth Gearbox
– hydraulic Drum Brake
-Plate-rolled Drum kits
  
2-End Carriages
-Forged Flanged wheel
-Rigid welded box type beam
-compact layout
 
3-Griders
-2 main girders are welded box type
-Material: carbon steel with high quality of Q235B or Q345B
-The main girder is connected by strength bolt.
-Weld joint tested by X ray or ultrasonic examination;
– Modula design
– Designed Deflection≤1/800 of span

4-Control
-Cabin control
-Independent pendent control as option
-Wireless control as option

5-Electric Part
-Conductor power supply
-All hoist and crane movements are independent and can be run simultaneously.
-Protection degree IP55
-The components are positioned in a maintenance friendly way, and the whole layout provides with good protection
-Festoon cables are suspended on cable saddles, fixed to cable trolleys, running in a galvanized C-track.

6-Painting
-corrosion protection through rust removal by mechanical shot blasting SA 2.5
-First layer of coating epoxy 30 microns
-Second layer of coating epoxy 30 microns
-Third Layer of coating of polyurethane 40 microns
-Average thickness: about 100 microns
-Color: yellow or Orange as per requirements

7-Safe Protection
-Emergency-off switch
-Overload protect
-Earth protection
-Zero Position Protection
-Cross travel and long travel protection
-Lifting travel protection
-Overheating protection of motor
-Equipped with rainproof devices
– Alarm Bell and Lamp

Part 3: Sketch & Technical Data