Engineering machine and steering device thereof

Abstract

The invention discloses a steering device of an engineering machine. The steering device of the engineering machine comprises a speed changing box, a steering motor, a main transmission shaft transferring power to output shafts at two ends and a gear train and is provided with a first planet row, a second planet row and a third planet row, wherein sun wheels of the planet rows are in rigid connection with the main transmission shaft. The steering device is further provided with a first bevel gear pair and a second bevel gear pair, wherein the main transmission shaft outputs power and transfers the power to the first planet row through the first bevel gear pair, and the steering motor outputs steering power to the second planet row through the second bevel gear pair. The power is transferred to a terminal output shaft through planet carriers of the second planet row and the third planet row. By adopting the arrangement, the steering device is simple and compact in structure, achieves in-situ steering characteristic of the engineering machine and improves the steering sensitivity. On the basis, the invention further provides the engineering machine provided with the steering device.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a steering device. In addition, the present invention also relates to a construction machine with the above-mentioned steering device. Background technique [0002] Crawler-type construction machinery has a large contact area with the ground when driving, has good passability, and can adapt to various harsh road conditions; and has a strong bearing capacity, which can improve the performance of construction machinery. However, there are certain limitations in the steering of construction machinery using crawlers in working engineering, especially when the working space is small and the steering on the spot is required. [0003] At present, the steering mechanisms commonly used in domestic crawler construction machinery are divided into: independent steering mechanisms and differential steering mechanisms. Among them, the independent steering mechanism uses the ste...

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Problems solved by technology

[0005] In the current differential steering method, some use bevel gears to establish the steering mechanism, which has a complicated structure and takes up a lot of space; although it can be turned in situ, it is difficult to balance the output shafts on both sides when the loads on the two sides of the track are different. The power to ensure the safe and effective working perform

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