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DWSK Sprocket

Simplex sprocket wear maintenance


Time:

2021-01-29

The tooth profile of Simplex sprocket must ensure that the chain enters and exits the mesh smoothly and energy-savingly, minimizes the impact and contact stress of the chain link during meshing, and is easy to process.

1.Simplex sprocket tooth profile

The tooth profile of Simplex sprocket must ensure that the chain enters and exits the mesh smoothly and energy-savingly, minimizes the impact and contact stress of the chain link during meshing, and is easy to process.

The Simplex sprocket end face tooth profile commonly used in gear factories is composed of three arcs aa, ab, cd and a straight line bc, referred to as three arc-straight tooth profile. The tooth profile is processed with standard tools. It is not necessary to draw the end tooth profile on the Simplex sprocket work drawing, just indicate "the tooth profile is manufactured according to 3RGB1244-85" on the drawing, but the Simplex sprocket axial tooth profile should be drawn.

2.Simplex sprocket structure

Renqiu gears with small diameter Simplex sprocket are generally made into integral type, and medium diameter Simplex sprocket are mostly made into spoke plate type. In order to facilitate handling, installation and weight reduction, holes are opened on the spoke plate. Large diameter Simplex sprocket can be made into a combined type. The ring and wheel core can be made of different materials! For example, C45. stainless steel and other materials.

3.Simplex sprocket material

The Simplex sprocket material should ensure that the gear teeth have sufficient strength and wear resistance, so the Simplex sprocket tooth surface is generally heat treated to make it reach a certain hardness.

1. The tightness of Simplex sprocket should be appropriate. Too tight will increase power consumption and the bearing is easy to wear; too loose Simplex sprocket is easy to jump and fall off the chain. The degree of tightness of Simplex sprocket is: lifted or pressed down from the middle of Simplex sprocket, the center distance between two Simplex sprocket is about 2%-3%.

2. There should be no swing or skew when Simplex sprocket is installed on the shaft. In the same transmission assembly, the end faces of two Simplex sprocket should be in the same plane. When the center distance of Simplex sprocket is less than 0.5 meters, the deviation can be 1 mm; when the center distance of Simplex sprocket is more than 0.5 meters, the deviation can be 2 mm. But there can be no friction phenomenon of Simplex sprocket tooth flanks. If the two wheels offset too much, it will easily cause chain disconnection and accelerated wear. When replacing Simplex sprocket, check and adjust the offset.

3. After Simplex sprocket is severely worn, a new Simplex sprocket should be replaced at the same time to ensure good meshing. You cannot just replace the new Simplex sprocket alone. Otherwise it will cause poor meshing and accelerate the wear of the new Simplex sprocket. After Simplex sprocket tooth surface is worn to a certain extent, it should be turned over and used in time (refers to Simplex sprocket used for adjustable surface) to extend the use time.

4. The new Simplex sprocket is too long or stretched after use, which is difficult to adjust. You can remove the chain link depending on the situation, but it must be an even number. The chain link should pass through the back of Simplex sprocket, the lock piece should be inserted outside, and the opening of the lock piece should face the opposite direction of rotation.

5. Simplex sprocket should be filled with lubricant in time during work. Lubricating oil must enter the matching gap between the roller and the inner sleeve to improve working conditions and reduce wear.

6. The old Simplex sprocket cannot be mixed with part of the new Simplex sprocket, otherwise it is easy to have an impact in the transmission and break Simplex sprocket.

7. When the machine is stored for a long time, Simplex sprocket should be removed and cleaned with kerosene or diesel, and then coated with oil or butter and stored in a dry place.

Keywords:

Simplex,sprocket