Engineering machinery final transmission gear and preparation method thereof

Abstract

The invention relates to the technical field of gear production, in particular to an engineering machinery final transmission gear and a preparation method thereof.The engineering machinery final transmission gear is characterized in that a reinforcing plate is arranged on one side of the gear, the gear comprises gear teeth, a rim, a radial plate and a hub, a shaft hole is formed in the inner side of the hub, a key groove is formed in one side of the shaft hole, and the gear and the reinforcing plate are integrally formed; the wheel flange and the wheel hub are connected through the radial plate, the reinforcing plate is annular and arranged on one side of the wheel flange, the multiple sets of gear teeth are evenly arranged on the outer side of the wheel flange, one sides of the gear teeth are fixedly connected with the reinforcing plate, receding grooves are formed in the contact positions of the gear teeth and the reinforcing plate, and a carburized layer is arranged on the surface of the gear. The reinforcing plate is arranged on one side of the gear, the reinforcing plate and the gear are integrally formed, the strength of a gear body is improved, the impact resistance and alternating load capacity of gear teeth are improved, and meanwhile the gear is made of carburized alloy steel, so that the gear has good surface high hardness, core high strength and high toughness.

Description

technical field [0001] The invention relates to the technical field of gear production, in particular to a final drive gear of a construction machinery and a preparation method thereof. Background technique [0002] As the main equipment of large-scale construction sites, construction machinery is subject to extremely harsh working conditions and dramatic changes in working load, which greatly reduces the service life of the traditional system of construction machinery, so the design and use of the transmission system are very demanding. The final drive is the last stage of the construction machinery power transmission system. Its function is to decelerate the power transmitted by the engine, torque converter and gearbox and then transmit it to the walking system, thereby driving the construction machinery to travel. Due to the reduction in speed, the reduction gear of the final drive system is subjected to great load and repeated cyclic vibration and impact, resulting in pr...

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Problems solved by technology

[0004] In the prior art, coatings are usually prepared on the surface of carbon steel. Due to the softness of the substrate, the hardness cannot support the coating, and the obvious performance difference between the substrate and the coating, resulting in the performance of the prepared coating that cannot meet many practical requirements. Especially under the conditions of high speed, heavy load and alternating load, the coating will fall off and wear quickly

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