Steering drive device for caterpillar vehicle

Abstract

The invention relates to a turning driving device of crawler vehicle. Power output shaft connected with small gear is set in box body and the big gear on the shaft is mated with the small gear. The shaft is hollow. Small and big gears are cylinder gear. On the shaft left sun gear mated with left planetary gear connected with the left output shaft, right sun gear mated with right planetary gear connected with the right output shaft are set. Left ring gear connected with left bevel gear is mated with the left planetary gear and right ring gear connected with right bevel gear is mated with the right planetary gear. Left positioner is set on the left output shaft and right positioner is set on the right output shaft. Bearings are set between the left ring gear and the shaft, and between the right ring gear and the shaft. Bearings are set between left shaft sleeve connected with the left ring gear and the body, and between right shaft sleeve connected with the right ring gear and the body. Bearing is set between the left output shaft and the left shaft sleeve and bearing is set between the right output shaft and the right shaft sleeve. Turning control input shaft combined with turning bevel gear together is set on the body. The turning bevel gear is mated with the left bevel gear connected with the left ring gear and the right bevel gear connected with the right ring gear.

Description

technical field [0001] The invention belongs to the technical field of the steering mechanism of non-deflectable wheels; the steering mechanism of crawler belts or similar parts, and in particular relates to the running parts on both sides of the opposite vehicle driven by differential speed with separate power sources. Background technique [0002] With the continuous progress of society, there is an urgent need for a large number of various related medium and small power crawler vehicles in the fields of construction, engineering, agriculture and mining. At present, the steering drive of domestic crawler vehicles mostly adopts the clutch steering system. The main disadvantage of the clutch steering system is that during the steering process, the power is all concentrated on one side of the vehicle while the other side has no power. On the one hand, the device greatly affects the driving force of the engine, reduces the transmission efficiency, causes waste of power energy,...

AI Technical Summary

Problems solved by technology

At present, the steering drive of domestic crawler vehicles mostly adopts the clutch steering system. The main disadvantage of the clutch steering system is that during the steering process, the power is all concentrated on one side of the vehicle while the other side has no power. On the one hand, the device greatly affects the driving force of the engine, reduces the transmission efficiency, causes waste of power energy, affects the operating efficiency and construction progress of the tracked vehicle, and prolongs the construction time; on the other hand, it causes the tracked vehicle to turn unstable

In addition, this clutch steering cannot realize the in-situ steering of the tracked vehicle, and the work flexibility is not high

[0003] The patent number is 4,700,794, and the invention name is "vehicle steering gear". For use on vehicles, not for use in small and medium vehicles

The patent number is 5,535,840, and the invention title is "Steering System for Tracked Vehicles". The main disadvantage of the tracked vehicle steering system is that the transmission ratio is small when driving in a straight line, which increases the transmission ratio of other components of the tracked vehicle. It increases the design difficulty of tracked vehicles, and the structure is more complicated, so it is not suitable for use on small and medium-sized vehicles

The patent number is 5,004,060, and the invention name is "Crawler Vehicle Differential with Epicyclic Wheel Train". The main disadvantage of this steering device is that it is difficult to match the gears, and the gears are required to have a strict transmission relationship.

[0004] The patent number is 91220811.2, and the name is "Crawler Vehicle Power Steering Mechanism". After the steering bevel gear is fixed with the planetary transmission ring gear on the side, it is also supported on this shaft, and the left and right ends of this shaft are supported on the axial center of the left and right output shafts

At the same time, the movement or deformation of this shaft will also cause the planetary transmission ring gears on both sides to move and produce eccentric loads, and this eccentric load is also very unreasonable for planetary transmissions.

The input shaft of this patent adopts bevel gear transmission, so that the width of the mechanism is large and the structure is not compact. At the same time, due to the large diameter of the steering input bevel gear of this mechanism, the transmission ratio of the steering transmission is reduced, and the gear of the steering transmission is increased. Engagement force

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