Prefabricated beam yard gantry crane

Prefabricated beam yard gantry crane is a type of gantry crane used in prefabricated beam yards. The gantry crane in prefabricated beam yards lifts the track slab under the bridge and places it on the pavement or directly in place. Our factory focuses on producing prefabricated beam yard gantry cranes, including prefabricated beam yard gantry cranes, single beam cranes, double beam cranes, etc. Complete tonnage and multiple specifications, customized according to your workshop situation.

The gantry craneselect

1、 Selection of gantry crane

The appearance of the gantry crane complies with the relevant provisions of GB/T14406-1993 and GB5905-86 for general gantry cranes.

In general, when the lifting capacity is below 50t and the span is within 35m, without special usage requirements, a single main beam type should be selected. If the width of the door legs is required to be large, the working speed is high, or heavy or long items are frequently lifted, a double beam gantry crane should be selected.

2、 Span and cantilever length

The span of a gantry crane is an important factor affecting its own quality. In the selection process, while meeting the equipment usage conditions and complying with the span series standards, the span should be minimized as much as possible.

3、 Principles for determining wheelbase

(a) Can meet the stability requirements of the gantry along the direction of the crane track;

(b) The external dimensions of the goods should be able to smoothly pass through the leg flat steel frame;

(c) Pay attention to making the wheelbase B proportional to the span S, generally taking the wheelbase B=(1/4-1/6) S

4、 Determination of spacing dimensions for gantry cranes

In work, there should be a certain amount of space between the external dimensions of the gantry crane and the cargo and transportation vehicle channels in the yard to facilitate loading and unloading operations. When general transport vehicles are loaded and unloaded within the span, they should maintain a distance of at least 0.7m from the door legs. When the lifting device is not working, there should be a distance of at least 0.5m between it and the transport vehicle. When the goods pass through the door legs, there should be a distance of at least 0.5m.

Prefabricated beam yard gantry cranemaintenance

1、 Lubrication

The working performance and service life of various mechanisms of a crane largely depend on lubrication.

When lubricating, the maintenance and lubrication of mechanical and electrical products should refer to their own instructions. Large vehicles such as traveling carts and overhead cranes should be lubricated once a week. When adding industrial gear oil (SY1172-80) 200 to the winch, the oil level should be checked regularly and replenished in a timely manner.

2、 Steel wire rope

Attention should be paid to the situation of wire rope breakage. If there are broken wires, broken strands, or wear reaching the scrap standard, new ropes should be replaced in a timely manner. Steel wire ropes that can be selected include phosphated coated steel wire ropes, galvanized steel wire ropes, and smooth steel wire ropes.

3、 Lifting equipment

Lifting equipment must be inspected regularly.

4、 Pulley system

The main inspection is to check the wear of the rope groove, whether the wheel rim is cracked, and whether the pulley is stuck on the shaft.

5、 Wheels

Regularly inspect the wheel rim and tread, and replace the wheel with a new one when the wear or cracking of the wheel rim reaches 10% thickness.

When the diameter difference between the two driving wheels on the tread exceeds D/600, or when there are serious scratches on the tread, it should be re polished.