NLH European style electric hoist bridge crane

European-style cranes are widely used in foreign-funded enterprises and national new-built projects, which really achieve the purpose of reducing the height of the plant and saving investment. Due to the maintenance-free design, a lot of maintenance costs can be saved in the subsequent use. The motor power is only about 40% of the original, which is energy-saving. obvious.

*NLH European style electric hoist bridge crane

Light weight, low headroom, effectively saving construction resources, small hook limit, large working area, high-quality parts and components, low maintenance workload; few transmission links, high transmission efficiency, and low failure points; hook has anti-sway function, Accurate positioning and improve efficiency.

HD type electric single beam crane

HD European electric single beam has light weight, small wheel pressure, small boundary size, reliable performance and convenient operation. Small wheel pressure and small boundary size can reduce the investment in the early stage of the plant, with low noise, low energy consumption, energy saving and environmental protection.

*HD type electric single beam crane

Durable, reduce repair and maintenance costs.

The trolley adopts a compact design, and the hook lifts higher and is closer to the plant track. Increase the operating range of the hook.

After the no-load test conditions are normal, the load test is allowed. The load test is divided into static and dynamic. The static load test is carried out first, and then the dynamic load test is carried out.

The inspection content of the load test.

The quality of the bolt connection and welding at each connection of the crane metal structure is mainly the quality of the main end beam connection.

The strength and rigidity of mechanical equipment, metal structures and spreaders, and the strength of crane rails.

The brake should act flexibly and work reliably.

The reducer is noiseless.

The lubrication of the lubricated parts is good, and the temperature rise of the bearing does not exceed the regulations.

Each mechanism component should be stable and free of vibration. If there is any defect, the defect should be repaired before inspection.

Static load test run, electric hoist lifts the rated load.

After running back and forth several times over the full length of the bridge, drive the electric hoist to one end of the bridge and find the zero line on the measuring column (that is, the actual height of the beam at this time).

Static stiffness measurement: drive the electric hoist to the middle of the bridge frame, use the crane hook to lift the rated load, leave the ground 100～200mm, and hang in the air for 10 minutes. At this time, measure the downward deflection of the main girder or bridge, and the downward deflection of the main girder of the A5 crane It should not exceed L/700.

After the rated load test is qualified, a test run of 25% of the rated load is performed. The overload test method is the same as the rated load test. The qualified condition is that there is no permanent deformation after the test, and the test run can be performed three times in a row. The result of the third time shall prevail.