New 16-speed helical double countershaft lock-pin synchronizer gearbox

Abstract

The invention discloses a novel 16-gear speed changing box with oblique gears, double middle shafts and lock ring type synchronizers. The speed changing box comprises a main box part and an auxiliary box part, wherein an input shaft and a main shaft connected with the input shaft are arranged in the main box part; the main shaft is connected with a sun wheel in the auxiliary box part through a spline transition sleeve; front and rear ends of the main shaft are respectively provided with a main shaft front positioning mechanism and a main shaft rear positioning mechanism; a plurality of oblique gears are arranged on the main shaft; an input differential mechanism is arranged on the input shaft in the main box part; two lock ring type synchronizers are respectively arranged between the first gear and the second gear as well as between the third gear and the fourth gear which are arranged on the main shaft in the main box part; and a planetary gear train mechanism is arranged in the auxiliary box part. The speed changing box is operated in a labor-saving mode, gears can be shifted stably, stable transmission is performed, the noise is low, and the actual service life of the speed changing box can be prolonged.

Description

technical field [0001] The invention relates to a gearbox, in particular to a novel 16-speed helical double countershaft lock-pin synchronizer gearbox. Background technique [0002] At present, in the common heavy-duty truck gearbox structure, the meshing sleeve is used to shift gears. When switching from one transmission ratio to another transmission ratio, the meshing line speeds of a pair of gears or meshing sleeves to be meshed during shifting are not equal. , so an impact occurs during meshing, causing noise, and even damage to the gear teeth, resulting in early wear. And the driver needs bigger shifting force to finish shifting rapidly and correctly in a short period of time when operating, which is easy to cause fatigue. In view of the above-mentioned problems in the shifting of heavy-duty truck gearboxes, measures should be taken in the gearbox structure to ensure smooth gear shifting, simplify the operation, and reduce the labor intensity of the driver. Contents ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the common heavy-duty truck gearbox structure, the meshing sleeve is used to shift gears. When switching from one transmission ratio to another transmission ratio, the meshing line speeds of a pair of gears or meshing sleeves to be meshed during shifting are not equal. , so the impact occurs when meshing, causing noise, and even damage to the teeth, resulting in early wear

And the driver needs a large shifting force to complete the shifting quickly and correctly in a short time during operation, which is easy to cause fatigue

Images