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Correct installation of planetary gear reducer and precautions for use
Time:2022-05-25 Pageviews:804

To install the planetary gear reducer correctly, you must first understand the reducer.

Working characteristics of NGW planetary gear reducer:

The gears are made of flexible high-strength low-carbon alloy steel by carburizing and quenching, and the tooth surface hardness reaches HRC54-62.

Using grinding technology, high precision and good contact.

The load capacity is high, which is seven times higher than that of the gear reducer.

High transmission efficiency, up to 98%, and long service life.

Structural features of NGW planetary gear reducer:

NGW planetary gear reducer mainly consists of sun gear, planetary gear, ring gear and planet carrier.

In order to evenly distribute the load of the three planetary gears, a toothed floating mechanism is used, that is, the sun gear or the planetary carrier floats, or both the sun gear and the planetary carrier float at the same time. The gears in the reducer are straight-toothed involute cylindrical gears. Has the following characteristics:

Small size, light weight, under the same conditions, it is more than 1/2 lighter than the ordinary involute cylindrical gear reducer, and the volume is 1/2 to 1/3 smaller.

High transmission efficiency: single-stage planetary gear reducer reaches 97% to 98%; two-stage planetary gear reducer reaches 94% to 96%; three-stage planetary gear reducer reaches 91% to 94%.

The transmission power range is large: it can be from less than 1KW to 1300KW, or even larger.

Large transmission range: i=2.8~2000

Adaptable and durable.

Application and applicable conditions of planetary gear reducer:

NGW type planetary gear reducer has three horizontal series, single-stage (NGW11-NGW121), two-stage (NGW42-NGW122) three-stage (NGW73-NGW123). Mainly used for metallurgy, mining, lifting and transportation machinery and equipment, and can also be used for power transmission under other similar industrial and mining conditions.

The working environment temperature is -40℃-45℃;

Correct installation and maintenance of the planetary gear reducer is the key to ensuring the normal operation of the planetary reducer. Therefore, when you install the planetary gear reducer, be sure to install it carefully according to the following installation sequence.

Step 1: Before installation, it should be confirmed whether the motor and planetary gear reducer are in good condition, and whether the dimensions of each part adjacent to the drive motor and the reducer are strictly aligned. This refers to the size and common service between the positioning boss and shaft diameter of the drive motor flange and the positioning groove and aperture of the reducer flange; wipe and dispose of the dirt and burrs on the same surface.

Step 2: Unscrew the screw plug on the process hole on the side of the reducer flange, rotate the input end of the reducer, align the cap of the hexagon socket head cap with the process hole, insert the hexagon socket head and loosen the hexagon socket head cap screw .

Step 3: Hold the drive motor so that the keyway on the shaft is perpendicular to the tightening screw of the input end hole of the reducer, and insert the drive motor shaft into the input end hole of the reducer. When inserting, it must be ensured that the concentricity of the two is the same and the flanges on both sides are parallel. If there is a difference in heart rate or the flange on both sides does not bend, the reason must be found out. In addition, it is strictly forbidden to use hammering during installation, which can prevent the axial force or radial force of the hammer from damaging the two bearings, and can determine whether the two are consistent through the feel of the installation. The key to determining the common concentricity of the two and the parallelism of the flanges is: after the two are inserted into each other, the flanges of the two are basically close to each other, and the loopholes are the same.

Step 4: In order to ensure that the two flanges are evenly connected to each other, first screw the drive motor fastening screws freely, but do not tighten them; then gradually tighten the four fastening screws according to the diagonal position; finally tighten the planetary gears Tighten the screw in the input hole of the reducer. Be sure to tighten the drive motor tightening screws first and then tighten the reducer input hole tightening screws.

Meticulous: The exact placement between the reducer and the machine configuration is similar to the exact placement between the planetary gear reducer and the drive motor. The key is to ensure that the output shaft of the planetary reducer is aligned with the concentricity of the input shaft of the driven sector.

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