V-belts are widely used in agricultural machinery. The standardized V-belts are trapezoidal in section and have no joints in the whole circle. They are divided into 7 types: O type, A type, B type, C type, D type, E type and F type. The cross-sectional area of u200bu200bthe belt from type to type F gradually increases. The choice of belt type is determined according to the power transmitted and the speed of the belt. There is a lot of knowledge in it. Select the correct model The selected model should be compatible with the selected V-belt, otherwise the V-belt will appear abnormal in the pulley groove. Get the model number wrong. Before installing it correctly, if the center distance between the two axes can be adjusted, the center distance should be shortened, and the center distance should be adjusted as required after the belt is installed; if the center distance between the two axes cannot be adjusted, a triangle Put the belt into the pulley groove first, then turn the other pulley to install the V-belt, and install a set of V-belts in the same way. During installation, it is forbidden to use tools to pry or pull the V-belt hard to prevent the V-belt from being stretched or being too loose or too tight. When installing pulleys, the centers of the two upper pulleys must be aligned, otherwise the V-belt will work on one side, causing serious wear and reducing the service life of the V-belt.

Appropriate tightness The tightness of the V-belt must be checked and adjusted frequently to make it meet the requirements. If the V-belt is too loose, it is not only easy to slip, but also increases the wear of the V-belt, and even cannot transmit power; if it is too tight, it will not only elongate the V-belt and deform, which is easy to damage, but also cause the clutch bearing of the main bearing of the engine to be too large due to the retraction force. And accelerate the V-belt wear. The correct inspection method is: apply a vertical pressure of about 2 kg in the middle of each belt by hand, and the sinking amount is (20-30 mm), and it should be adjusted in time if it is not suitable.

When two or more belts need to be replaced, the specified type of V-belt should be selected, and the tightness of each group of V-belts should be the same. Otherwise, the force of the old and new V-belts will be uneven, and even the old V-belt will not work, which will affect the power transmission and shorten the service life of the V-belt. Strictly prevent contamination During use, the V-belt should be strictly prevented from being stained with muddy water and oil, and avoid contact with corrosive substances such as acid and alkali, so as to prevent the V-belt from slipping and corroding and causing early damage. Routine maintenance operators and users should master the correct operation essentials in normal driving, and try to avoid sudden start and sudden braking according to the technical requirements of the instruction manual; also prevent frequent overload operation. store.