Crane Bridge Girder

1.Dejun QD Type crane bridge girder double with hook

 

Dejun QD Type crane bridge girder double with hook is suitable for all kinds of general conditions, used for material lifting, equipment installation and maintenance, is a kind of widely used lifting equipment. It is mainly composed of main beam, crane walking mechanism, trolley, engine room and electrical equipment.

 

Dejun QD Type crane bridge girder double with hook adopts the structure of double beam, double track and single trolley.

 

The lifting trolley is provided with the main and auxiliary lifting mechanisms, and each adopts an independent transmission system. The main and auxiliary lifting mechanisms can not only complete the lifting work independently, but also coordinate to complete the work.

 

Dejun QD Type crane bridge girder double with hook technology is mature, safe and reliable, easy to operate, stable operation. It is a mature product of our company for many years, and it is the most widely used crane in China and the world.

 

2. Parameters:

 

Lifting Capacity(t)		100/32			125/32		140/40			160/50			180/40(50)
Span(m) Customized		19	22	25	19	22	19	22	25	19	22	25	19	22	25
Lifting Height(m)	Main Hook	18	20	25	24	20	23			24			24
	Auxiliary Hook	20	22	27	26	22	25			26			26
Speed(m/min)	Main Hook	6.8	6.8	8.6	9.5	7.6	6.3			6			6
	Auxiliary Hook	9.5	9.5	12	12	9.5	9.5			7.8			9.5
	Trolley Travelling	37	37	41	42	36	34.8			36			38.8
	Crane Travelling	68	68	77	77	77	77.8			68			78
Working Class		A7-A8

3. Advantage
-Compact structure

-Good stiffness

-Easy to operate

-Low noise

-Safety and reliability

-Beautiful appearance

 

Main Beam

The main beam is a box-shaped structure on the track. The section of the main beam is analyzed and calculated systematically by ANSYS finite element method to ensure that it has sufficient strength, stiffness and overall stability. The camber Angle of the main beam is (1 ~ 1.4) S/1000, and the maximum camber position is controlled within 1/10 of the span. The main stress member of the main beam is Q255B, and the minimum plate thickness is not less than 6mm.

 

End Carriages

The end Carriages is a box-shaped structure, and the connection between the end car and the main beam is a rigid connection. In order to facilitate transportation, the connection of the end car is disconnected and connected by high-strength bolts. Each connecting plate is positioned with reaming bolts and has been marked for positioning inspection before delivery.

 

Trolley

The transverse movement mechanism of the car is supported by four wheels, and an independent drive system is adopted to drive the car centrally.

When starting, the driving wheel does not slip, and when braking, it is stable and reliable. This structural arrangement is conducive to the installation, maintenance and disassembly of each component of the drive system.

 

Hoist

The main and auxiliary lifting mechanisms are arranged on the same vehicle frame, and each mechanism has an independent drive device.

The working principle of the lifting mechanism: the motor performs the work, changes the speed through the reducer, and then drives the drum through the drum coupling, and completes the hook through the wire rope winding system.

The lifting mechanism adopts series resistance speed regulation system, stable braking, small impact force of the hook, accurate positioning, which not only improves the user's production efficiency, but also greatly extends the service life of the lifting mechanism components.

These components are compact and easy to maintain, ensuring safety and reliability.

 

4. Applicable Environment:

 

Dejun QD Type crane bridge girder double with hook are generally suitable for dusty workplaces, smelting, casting, heat treatment, etc. In these processes, high-temperature dust will inevitably be generated. These dusts float in the air and adhere to various surfaces of the crane, and even affect the normal operation of electrical equipment.

 

At the same time, the temperature of these working environments is relatively high, the temperature of the molten metal is usually above 1500 degrees Celsius, and the average room temperature in the workshop can reach 40-60 degrees Celsius; When the air humidity is high, corrosive gases will be mixed in the air. During the process of smelting, casting and heat treatment, some water vapor will be generated, resulting in a high humidity and high corrosive air environment. This environment will accelerate the corrosion of metal structures, which is very harmful to cranes, so special casting cranes are required.

 

5.Transportation:

 

 

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