Belt transmission uses the friction or meshing between the belt and the pulley to transmit movement and power. Due to the smooth Transmission, simple structure, no need for lubrication and cushioning and vibration absorption, the transmission belt is widely used in agricultural machinery. Pay attention to the following aspects in the use of V-belt.
V-belt (also called V-belt) is a standard part, produced by a professional factory. For V-belt (V-belt), according to the size of its section, the original standard is divided into O, A, B, C, D, E, F seven There are seven models, the new standard is divided into Y, Z, A, B, C, D, E, seven models, and their cross-sectional dimensions increase sequentially. The commonly used triangle belts are Y, Z, A, and B. The replaced V-belt should be consistent with the model of the pulley groove, and the length of the replaced V-belt and the original V-belt should be equal to the length required by the design. When selecting, choose different types of V-belts according to the power and the size of the pulley groove.
Pay attention to installation: the axes of the main and driven pulleys should be kept parallel; the grooves must be in the same plane and must not be twisted; the tension of the triangle tape must meet the requirements; when multiple triangle belts are driven, the length and tension of each Should be basically the same; and a protective cover should be installed. Before installation, ensure that the two planes of the driving wheel and the driven wheel are on the same plane. When installing the V-belt, it is not allowed to use iron tools to forcibly pry in. This will seriously damage the pryed part of the V-belt, causing peeling between the inner layer and the strong layer of the V-belt or the skin is scratched, causing the slack of the pryed part. It may also damage the V-belt groove. The correct installation method is: first loosen the tensioning device, then press the V-belt into the pulley groove by hand, and finally tighten it. Strengthen regular inspection, adjustment and maintenance. In order to ensure the normal operation of the V-belt, the use of the V-belt should be checked regularly. If serious wear, cracks, aging, peeling and other defects are found, they should be replaced in time, and those with oil stains should be cleaned. In a set of V-belts, there should be no uneven tension after installation. If the installation is too tight and the V-belt is severely deformed, the life of the V-belt will be shortened. At the same time, the bearing will heat up due to excessive radial force. The bearing is damaged; if the V-belt is too loose, the driven machine will not reach the rated speed and even slip. Check the tightness method of the V-belt, add 2kg vertical load to the middle of each belt, and its sag is 30-50mm.
(1) When checking the tension of the V-Belt on a regular basis, it still fails to meet the specified requirements after adjustment. A new V-belt must be replaced. When replacing, all belts on the same pulley should be replaced at the same time, otherwise due to the difference between the old and the new, the length is different, the load on the V-belt will be unevenly distributed, causing the vibration of the V-belt, the transmission is not stable, and reducing the transmission of the V-belt Work efficiency.
(2) During use, the operating temperature of the V-belt should not exceed 60°C. Do not apply belt grease casually. If you find that the surface of the V-belt is shiny, it means that the V-belt has slipped. First, remove the dirt on the surface of the belt, and then apply an appropriate amount of wax. When cleaning the triangle belt, use warm water instead of cold or hot water.
(3) For various types of V-belts, it is not advisable to apply rosin or viscous substances. It is also necessary to prevent the V-belts from being contaminated with oil, butter, diesel and gasoline, otherwise it will corrode the V-belts and shorten the service life. The groove of the V-belt must not be oiled, otherwise it will slip.
(4) Keep the V-belt when it is not in use. It should be stored in a place where the temperature is relatively low, there is no direct sunlight, no oil and corrosive smoke, to prevent deterioration of the V-belt.
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