Rubber v Belts:Daily Maintenance and Transmission Design

What are the daily maintenance methods for rubber v belts

1. The rubber v belt should be checked for excessive wear. Wear and pulley rubber belts can cause tears of inconsistent belt tension due to excessive wear, but it can also cause unstable belts in grooves, causing accidents such as sliding or flipping. Proper inspection is necessary.

2. The machine tool should be disassembled and stored separately. In addition to regular maintenance, it is also important to determine the correct operating method and correct operation to determine the service life of the rubber belt in normal use.

3. Tension inspection is a key inspection item for rubber v belts, and it should be one of the regular maintenance items for triangles. Low tension can cause the belt to slip and cause early failure due to overheating. The overheated belt transfers heat to the wheels and transmission shafts of the drive system, causing the bearing oil to overheat.

4. To prevent pollution, use it to prevent oil and mud from sticking to it, avoid contact with corrosive substances such as acids and alkalis, and prevent early damage caused by slipping and corrosion.

5. The elastic belt of the triangle belt should be kept loose and tight, and the elastic belt needs to be constantly checked and adjusted to ensure that it meets the requirements.

6. The old and new cannot be used for mixing. If you need to replace two or three or more rubber v belts, please select the specified type of triangular belt and ensure consistency between each group.

The maintenance of the triangular belt is quite important, and the following points should be noted during use and maintenance.

1. During the operation of the rubber v belt, it should be prevented from getting oiled. If the rubber belt gets oiled, it will slip and accelerate its wear. At this time, you can use a cotton thread or cloth dipped in gasoline to wipe off the oil stains, and then use a dry cloth to clean it.

2. During operation, the pulley should not swing too much. If the swing is too large, the pulley disc should be checked for deformation, the pulley installation should be correct, the pulley shaft should be bent, and the bearings should be worn before troubleshooting.

3. When disassembling and assembling a V-belt, do not install it hard. Instead, loosen the tensioning wheel first, remove the wheel disc at one end of the variable speed wheel, and then dismantle the V-belt opening. When installing a V-belt pulley, the pulleys of the same transmission circuit should be in the same plane.

4. The v belt and pulley should be matched. The triangle belt works on two sides. If the bottom surface of the triangle belt contacts the bottom surface of the pulley groove and causes friction, it indicates that the triangle belt and pulley are not matched or worn. The v belt or pulley should be replaced according to the specific situation.

5. If the combine harvester is not used for a long time, the V-belt should be loosened to reduce fatigue damage. After the operation, the V-belt should be removed and kept in a cool and dry place. When hanging, it should be rolled as little as possible.

6. At the same time, v belts and triangular belts are generally used together. If one of them is damaged and needs to be replaced, the other few should be replaced together and cannot be mixed with new and old ones.

7. The tension should be appropriate. If the triangular belt is too loose, it will slip and cannot transmit power effectively, resulting in a decrease in power; At the same time, it will generate heat through friction, resulting in high temperatures. Generally, when the belt stops working, immediately touch it with your hand. If your hand can withstand prolonged contact, it is considered normal; If the hand is hot, it indicates that the temperature is too high and should be adjusted in a timely manner. If the v belt is too tight, it will increase power consumption, cause excessive wear, elongation, and shorten the service life of the belt. New belts can easily grow in the first few days of use, and should be checked and adjusted frequently.

During the use of the rubber belt, the tightness of the v belt should be adjusted regularly to avoid increased wear or inability to transmit power due to improper tightness. So what is the basis for adjusting the tightness? Next, we will tell everyone.

1. There are several types of belts, and there are also many specifications of belt length. When the tightness of the belt can be transmitted normally, the middle part of the belt should be manually pressed, and the length of the belt should also be considered. The longer the belt, the greater the degree of compression. Taking agricultural diesel engines as an example, it is best to apply a weight of about 2 kilograms to the belt, and the belt should be lowered by about 10mm. If it is not suitable, it should be adjusted in a timely manner, and the correct adjustment should be made based on the usage status.

2. If it is a new v belt with a reduction of about 10-12mm, it can also be considered that the tension of the rubber belt is just appropriate.

3. Press the belt by hand with a pressure of about 10kg. If the belt is pressed down by about 15mm, it is considered that the belt tension is just appropriate. If the amount of compression is too large, it is considered that the tension of the belt is insufficient. If there is almost no reduction in the belt, it is considered that the tension of the belt is too high. When the tension is insufficient, the belt is prone to slipping. When the tension is too high, it is easy to damage various bearings.

Key points of V-belt design:

1. The tooth shape of a v belt generally adopts an arc shape, while some choose a trapezoid shape. Regardless of the tooth shape, it must reach a circle on the pulley that is tangent to the pitch line of the belt. The distance between the corresponding points of two adjacent teeth on the pulley on this arc is the pitch of the rubber v belt.

2. In order to ensure good performance when the belt and pulley mesh, the tooth shape angle of the pulley should be accurately selected during design.