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The Lower Rotating Hanging Beam Crane has rotating hanging beam, suitable for steel, storage yard, warehouse, outdoor fixed span, loading and unloading steel plate, shaped steel, coil and other materials. It is especially suitable for lifting different specifications and requiring horizontal rotation. The hanging beam adopts cross structure which is reliable, safe and has a certain anti swing function. The electromagnetic sucker, clamp and other special sling can be carried under hanging beam.

Components

The lower rotating electromagnetic hanging beam crane is a kind of crane with rotating electromagnetic hanging beam as a hanger. Through the electromagnet fixed on the hanging beam, the crane is used to absorb and carry heavy objects. The rotation angle of the electromagnetic beam is 0~270 degree, which can meet the requirements of the material turning, cross stacking and so on for user.

Technical Parameters

Figure1.  QD(5+5)t～(16+16)t

Figure2.  QD(20+20)t-31m A7

-Bridge Frame

The bridge frame is the main force component of the crane. The double beam with double track structure is adopted. The main beam and the end beam are the main force parts, and the auxiliary metal structure is composed of trolley track, walking platform, railing, ladder and so on.

The main weld by submerged arc welding or gas welding; after welding, the welds are detected according to the regulations of ‘GB/T 14405 - 2011 general overhead crane’. The main force material is Q235B, and the main beam section is analyzed and calculated by finite element method to ensure that it has sufficient strength, stiffness and overall stability.

All steel plates did ball blast pretreatment, reaching Sa2.5 grade standard. The camber ratio is (0.9 ~ 1.4) S/1000, and the maximum camber position is controlled in the middle of the span 1/10. The end beam is a box structure, and the end beam is connected with the main beam as rigid connection. The end beam needs to be transported after dis-assembly, and it is connected by high strength bolts, and the connection plate is positioned by reaming bolts. The walking platform of bridge with 3mm thick tread plate, channels are set up for 1050mm high railing, with a distance of 350mm for horizontal bar, the bottom height of retaining plate is 100mm, any place on the railing can withstand the load of 1kN (100kgf) from any direction without plastic deformation. In order to facilitate transportation, loading and unloading, installation, the main components are equipped with hoisting lug, hoisting hole, etc., the hoisting lug, hoisting hole strength and location need to fully consider the safety and convenience of lifting.

Working Principle

The trolley is composed of lifting mechanism, operating mechanism, small frame and so on. The working principle of the lifting mechanism is take a motor as the power source, drive two drums through the reducer, and complete the lifting of the hanging beam through the wire rope winding system. The reel group is quadruple drum group, which is using special wire rope winding way with four sets of fixed pulley. It can not only resist the torque when the beam is rotated, but also reduce the swing range of the hanging beam.

The electromagnetic beam is composed of rotating mechanism, hanging beam, electromagnet and so on. The rotary support is adopted between the rotating mechanism and the hanging beam, the rotating support is driven by the three in one deceleration motor and the hanging beam is rotated. The hanging beam adopts welded steel body, high strength and rigidity; The hanging beam on the rotating mechanism is driven by the rotating plane in 0 ~ 270 angle of rotation, and according to the different hanging, setting different hanging point.

FAQ

1. How to define the lifting capacity of crane?

  - When the beam hanged with hook: lifting capacity=self weight of beam + self weight of electromagnet + weight of suspended object;

  - When the moving pulley and the hanging beam are integrated: lifting capacity=self weight of electromagnet + weight of suspended object;

2. How to choose electromagnet?

- The choice of electromagnet is related to the hanging object, and the specific option needs to be determined by the shape, size, temperature and shape of the suspended object. Most of the hanging objects are bundled bar, square billet, steel plate and so on.

3. How to realize the rotating mechanism of the lower rotating electromagnetic hanging beam crane?

  - The rotating mechanism adopts hanging beam with rotary support type, and three in one speed reducer motor is used to drive the lower hanging beam to realize the rotation.

4. What are the main configuration requirements of the electromagnetic hanging beam overhead crane?

  - Select the hard gear reducer first, lift brake need to have manual release function, fast speed of lifting and traveling requires, higher work efficiency; if the working level is A7, the lifting motor as far as possible to avoid the use of 6 speed.

5. What are the requirements for lifting heavy objects with hanging beams?

  - When the hanging beam is used, the load center deviation is not more than 0.5m.