Triangle is widely used in agricultural machinery. Standardization of triangle cross section is trapezoidal, no seams, on the whole circle is divided into seven types: O, type A, type B, C, D, E and F. Triangle strip of cross-sectional area increase gradually from O F type. Triangle type selection is based on the speed of the transmission of power with, and there are a lot of knowledge. 1, choose the right model for the selected models should be compatible with the selected V belt, V belt will anomalies in the pulley groove. When into triangle, it is best to the old belt to the purchase of agricultural machinery department, in case of model error. 2, properly installed before the installation, if the center distance between two axes is adjustable, you should first, shortening the distance between the center and in the center of the tape after installation according to the need to adjust the distance. If the center of the distance between two axes is not adjustable, a triangle can be set in the wheel tank first, and then another pulley can rotate, the triangle can be installed, a set of triangle can also be installed in the same way. When installation, forbid to use tools to pry open or drag v-belts, lest the triangle tensile or too loose too tight. 3, prevent the string when installing pulley groove, the center of the two upper pulley needs to align, unilateral work triangle, the serious wear and tear, reduce the service life of the triangle. 4, tightness of the right triangle elastic need regularly check and adjustment, to meet the requirements. Triangle is not only easy to skid is too loose, also will increase the wear and tear of triangle, couldn't even pass. Tight triangle not only can spin and deformation and easy to damage, it can also lead to excessive engine main bearing and clutch bearing force and accelerate the wear and tear of triangle. What would be the right way to check by hand in the middle of each tape about 2 kilograms of vertical pressure, subsidence - 20 30 mm is appropriate, if not in time, should be timely adjustment. 5, old and new, mixed doubles root or more than three root triangle need to change, should choose to specify the type of triangle, each group should match the tightness of the triangle. Mix of old and new triangle does not allow, or should reduce the number of root. Otherwise, the new and old triangle will not be uniform stress, also won't work, or even the old triangle influence power transmission and shorten the life of the triangle. 6, fight pollution, prevent the greasy dirt and mud on the triangle, avoid contact with acid and alkali corrosive material such as, prevent damage of triangle skid, corrosion and early. 7, daily maintenance machine hand should master correct gist of driving operation and users, and according to the requirements of the instruction manual technology, try to avoid a sudden start and brake suddenly. You also need to prevent frequent overload operation. When machines and tools for a long time to stop operation, triangle should be removed and stored separately.