Product Details

Double Girder Overhead Crane

Overhead cranes sometimes also called bridge cranes and eot crane, which are cranes with a hoist or winch traveling along the bridge beween parallel runways. They are designed to meet the medium to heavy industrial lifting requirements, covering all parts of the manufacturing process. Compared with single girder overhead crane, the double grider overhead crane can support biger lift capacity, and more suitable for heavy work duty.

Types:

Dafang overhead cranes consist of a wide range of cranes including:

• Overhead crane for laddle lifting capacity up to 600t;

• Overhead crane for steel factory capacity up to 600t;

• Overhead crane for combustible environment to 600t;
• Overhead crane with grab lifting capacity up to 50t;
• Overhead crane with hoist lifting capacity up to 80t;
• Overhead crane with magenet lifting capacity up to 50t;

• Overhead crane with winch lifting capacity up to 300tons;
• Overhead crane with chain hoist lifting capacity up to 30t;

Safety:

No.	Safety Measures	Foundation
1.	Loss of phase /voltageprotection	1. When the voltage/phase is too low, the electricity will disconnect
2.	Over Voltage, over current protection	1. When the voltage/phase is too big, the electricity will disconnect
3.	Overload Limit Switch	1. When the lift capacity is more than the max rated lift capacity, the electricity will disconnect, crane will stop work
4.	Weight limit	1. Supervise the decrease of hook. There is a limit height. The hook cannot fall any more if reach this limit
5.	Fire limit	1. Supervise the up and down limit position of Hook. Avoid the over increase and over decrease, protect hoist
6.	Crane Travel Limit Switch	1. Supervise the travel of crane, and stop crane travel more than rated travel distance. Keep Safe

European Type Overhead Crane

Magnet Overhead Crane

Cast Overhead Crane

Grab Overhead Crane

Details of Different Double Girder Overhead Crane

Drawing of Double Girder Overhead Crane

Mechanism

Item

Lift Mechanism

Mechanism

Item

Travel Mechanism

Main Lift Hook

Aux Lift Hook

Trolley

Crane

Lift Capacity

3.5

Gauge

2000

20000

Lift Speed

m/min

10.4

19.7

Travel Speed

m/min

43.8

116.8

Work Duty

Work Group

Max Lift Height

Track

2300

4050

Power

380V 3AC 60HZ

Wire Rope

Work Tension

17.4

8.26

Buffer Stroke

140

Wheel Diameter

Φ400x1500

Φ300x1500

Rail Type

24kg/m

43kg/m

Pulley Diameter

Max Wheel Load

35.25

135

Reducer

Type

ZQ500-3CA

ZQ400-3CA

Reducer

Type

ZSC-400-1-1

ZQ350-1/2

Speed Ratio

40.17

23.34

Speed Ratio

22.4

12.64

Motor

Type

YZR 200L-6

YZR 160L-6

Motor

Type

YZR132M1-6

YZR160M2-6

Power

2.5

2x7.5

Rotation Speed

r/min

964

942

Rotation Speed

892

940

Brake

Type

YWZ -300/45

YWZ 200/25

Brake

Type

YWZ-100/18

YWZ-200/25

Brake Torture

N.m

2X630

200

Brake

Torture

2x200

Pusher Type

YT -45Z/5

YT1-25ZB/4

Pusher Type

YT1-18Z/2

YT1-25ZB/4

Limit Switch

DZX multifunctional switch of LX10-31

Limit Switch

LX10-11

Inquiry Tips

To offer the most suitable design for you, please let us know the following informations:

• Lift Capacity(T): (Rated Lift weight)

• Lift Height(m): (Height from hook center)

• Span(m): (Distance between rail center)

• Lift Speed(m/min): (Single; Double; Variable)

• Crane Travel Speed(m/min): (Single; Double; Variable)

• Trolley Travel Speed (m/min):      (Single; Double; Variable)
• Work Duty:        (Very frequently? How many hours per day?How many times per hour? )
• Environment:      (Whether there is any explosive, combustible, corrosive air? )
• Lift What:     (We will consider whether need to match suitable hanger for you.)

• Power: (220v; 380v; 440v; 460; 480v)

Spare Parts

Item	Manufacture & Supplier	Marks
Motor	Kiamusze & SEW & ABB	Famous Brand Abroad/Domestic
Hook	Dafang Heavy Machinery	Famous trademark of China
Drum	Dafang Heavy Machinery	Famous trademark of China
Wheel	Degong Machinery	China famous brand
Cabin	Dafang Heavy Machinery	Famous trademark of China
Reducer	Dongli/Boneng/SEW/Taixing	Top-500 private enterprise in China

Workshop of Double Girder Overhead Crane

Service

FAQ

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