Proportional steering type speed changer used for caterpillar band equipment

Abstract

The invention discloses a proportional steering type speed changer used for caterpillar band equipment. A box body assembly is internally provided with a main speed changing assembly, an auxiliary speed changing assembly, a proportional steering mechanism, a main speed reduction assembly and a power output speed changing assembly. A hydrostatic stepless speed changing device is arranged on one side of a box body, power is input through the main speed changing assembly, one part of the power is transmitted to the power output speed changing assembly and used for driving an external power device, and the other part of the power is transmitted to the proportional steering mechanism through the auxiliary speed changing assembly and drives the caterpillar band equipment to travel through the main speed reduction assembly. The hydrostatic stepless speed changing device enables the steering angle of the caterpillar band equipment and the rotation amplitude of a steering disk to be in a certain proportion relation by adjusting the rotating speed of an outer gear ring of the proportional steering mechanism. Thus, the steering precision and the operation stability of the caterpillar band equipment are improved, 12-gear traveling power output combination is achieved through the main speed changing assembly and auxiliary speed changing assembly combination so that the proportional steering type speed changer can be matched with more operation farm implements and is especially suitable for being applied to the field of caterpillar band type agricultural mechanized equipment.

Description

technical field [0001] The invention relates to the technical field of power transmission of crawler equipment, in particular to a proportional steering transmission for crawler equipment. Background technique [0002] Tracked equipment mainly includes crawler-type engineering machinery, crawler-type military machinery and crawler-type agricultural machinery; among them, crawler-type engineering machinery and crawler-type military machinery are usually complex in structure and expensive, because these crawler products mainly use hydraulic pressure The motor directly drives the track, but the transmission system is relatively simple, and there is almost no transmission, drive axle and other equipment; The traditional agricultural machinery equipment also adopts full hydraulic drive, which will lead to complex structure, high price, difficult maintenance and high use cost. Therefore, crawler agricultural machinery equipment usually adopts a mechanical power transmission syste...

AI Technical Summary

Problems solved by technology

Therefore, in crawler equipment, a power transmission scheme without a differential is usually adopted, and a power separation or shunt device is installed inside the crawler transmission, so that the left and right sides have a speed difference to realize steering. These devices are mainly jaw clutch steering devices. , planetary gear steering device and hydraulic control differential steering device, etc., but these transmissions have low steering precision, poor accuracy, and poor steering controllability when driving tracked vehicles to turn

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