Integral double-chain wheel and engineering machinery

The utility model discloses an integral double-chain wheel and engineering machinery. The integral double-chain wheel comprises a left row of teeth and a right row of teeth, the left row of teeth and the right row of teeth are connected into a whole, and the tooth shapes of the left row of teeth and the right row of teeth are the same; coaxial shaft holes are formed in the left row of teeth and the right row of teeth, and an input shaft is inserted into the shaft holes; a step surface is arranged in a shaft hole of the left row of teeth and is used for limiting the input shaft; and the step surface is connected with the input shaft through a fastener, so that the double chain wheels are connected with the input shaft. The two chain wheel row teeth are connected together, only one-time installation is needed in the installation process, and installation is convenient; the two chain wheels are integrated, the weight of the chain wheels is reduced, and cost is reduced. 本实用新型公开了一种整体式双链轮及工程机械，包括左排齿和右排齿；所述左排齿和右排齿连接