The role of tire coupling on road rollers

On the rollerCouplingUsed for the connection between the engine and the transmission.In the early days, we used a flexible coupling. The coupling of this connection structure requires: drilling and tapping the half coupling on the part connected with the rubber; pulling out each half coupling The spline hole matched with the output shaft of the diesel engine main clutch and the input shaft of the gearbox.In addition, the rubber block on it is subjected to different external forces from the very beginning of assembly. The outer side is stretched and the inner side is squeezed. As time goes by, the rubber block will become fatigued and talented. Under the working state of the machine It is more prone to fatigue and even cracking.
　　For this reason, we have selected the most advanced domestic tire coupling.The advantages of this coupling are:
　　(1) The connection strength is high and the transmission torque is large. When the roller adopts the 4135AK-3 diesel engine, its maximum transmission torque is 4787N·m, while the nominal torque of the tire coupling can reach 6300N·m, which is greatly enhanced The connection performance of this part of the 3Y12/15 type roller.
　　(2) Reduce the requirements of installation accuracy.The coaxiality of the original universal ten-byte or rubber connecting block requires 1.0mm, but it can be reduced to 2.5mm when a tire coupling is used.
　　(3) The tire coupling is also a flexible connection, which has obvious protective effects on the engine and transmission when the machine is started and overloaded.
　　(4) The original rubber block connection requires punching and tapping on the half coupling; when the tire coupling is used, the half coupling only needs to be punched instead of tapping.Because the metal nut for connection is embedded in the rubber tire ring, and the flange size of the half coupling can also be reduced, the connection hole is also reduced from the original 8 screw holes to 6 light holes; it saves material, And save processing man-hours.

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