How to Maintain the Crane Sheaves?

As a common mechanical component, sheaves play an important role in various equipment. However, the normal operation of the sheave is inseparable from regular maintenance and precautions. Improper maintenance of sheaves will not only increase maintenance costs, reduce equipment attendance, but also affect the construction safety of vehicles.

1. Clean the sheavesurface

Dust and impurities easily accumulate on the surface of the sheave, affecting its normal operation. Clean the pulley surface regularly, wipe it with a soft cloth, and use special cleaner if necessary.

2. Lubricate pulley bearings

Sheave bearings are an important part of sheaves. Regular lubrication of the bearings can reduce wear and extend service life. It is recommended to use specialized lubricants.

3. Prevent sheaves from rusting

Rusty sheaves can reduce their operating efficiency and even cause them to become stuck. Keep the sheave surface dry and clean to avoid prolonged exposure to moisture.

4. Be careful to avoid overloading

Excessive load will cause increased sheave wear and shorten service life. When using a sheave, make sure the load is within the load-bearing range of the pulley.

5. Regularly check the status of the sheaves

Regularly check the degree of wear and appearance damage of the sheave, and deal with problems in time. If the sheave is seriously worn or cracked, it should be replaced immediately.

6. Use sheave equipment safely

When using sheave equipment, follow operating procedures to ensure personal and equipment safety. Avoid using sheaves that do not meet specifications to avoid accidents.

In addition to the daily maintenance of the pulleys, it is also necessary to check for hidden dangers in the pulleys.

1. Check content

Whether the sheave has cracks

Uneven wear of wheel groove reaches 3mm

The wheel groove wall thickness wear reaches 20% of the original wall thickness

The diameter of the bottom of the wheel groove is reduced by 50% of the diameter of the wire rope due to wear or there are other defects that damage the wire rope.

Whether an anti-rope-off device is installed and whether it is effective.

2. Basis for investigation

Different countries have different standards for the manufacture of sheaves. The data in this article refer to the safety technical regulations under Chinese standards.

The sheave should have a device or structure to prevent the wire rope from coming out of the rope groove. The gap between the side plate and arc top plate of the sheave cover and the sheave body should not exceed 0.5 times the diameter of the wire rope.

Sheave sets that can be touched by human hands should be equipped with sheave covers; for sheave sets that may fall to the ground, the sheave covers should have sufficient strength and rigidity.

Sheave maintenance steps: one, look; two, shakes; three, transmissions

1. Look: Check whether the sheavegroove is smooth and smooth, and there must be no defects or cracks; serious wear and tear can easily lead to rope skipping.

2. Shake: Shake the sheave left and right, and it will shake left and right during inspection; if it shakes seriously, it needs to be scrapped and the sheavereplaced.

3. Turn: Turn the sheaveto see if it is smooth. If it is difficult to rotate, the sheave needs to be replaced.

GloryRail has been selling crane pulleys for many years and has rich experience in supplying sheave pulleys. Based on the crane track system, provides customers with one-stop solutions for the crane industry.