Power gear shift gearbox for wheel excavator

Abstract

The invention relates to the technical field of power devices of engineering machinery, in particular to a power gear shift gearbox for a wheel excavator. The power gear shift gearbox comprises a boxbody, and the interior of the box body is connected with an input shaft and an output shaft; a first needle bearing, a clutch and an input gear are fixed to the input shaft, a first spline sleeve is connected to the first needle bearing, one end of the first spline sleeve is provided with a first-position gear connected with the clutch, a second-position gear connected with the clutch is arrangedbetween the clutch and the input gear, and a second needle bearing is connected between the second-position gear and the input shaft; and a third needle bearing, a fourth needle bearing and an outputgear engaged with the input gear are fixed to the output shaft, the third needle bearing is provided with a first transmission gear engaged with the first-position gear, and the fourth needle bearingis provided with a second transmission gear engaged with the second-position gear. The power gear shift gearbox has the advantages that engagement of the two pairs of gears is controlled through the clutch, gear shifting is achieved, and output of different speed ratios is achieved; and the interior structure is compact, and the space of the whole gearbox is greatly utilized.

Description

technical field [0001] The invention relates to the technical field of power devices of engineering machinery, in particular to a power shift gear box for a wheeled excavator. Background technique [0002] The gearbox is an important part of the mechanical power system of the wheel excavator, and plays a very important role in the operation performance of the wheel excavator. The traditional wheeled excavator gearbox adopts a double-gear setting, which requires a large space to arrange, which will make the gearbox larger in shape, higher in cost, and troublesome in maintenance. The existing wheeled excavator gearbox adopts a sliding tooth structure to realize gear shifting, which needs to be shifted in a parked state, and sometimes the gear is difficult to change in place, which will lead to slipping tooth splines or Related parts are damaged, and at the same time, because the excavator needs to change between different gears when it is working, the labor intensity of the o...

AI Technical Summary

Problems solved by technology

The existing wheeled excavator gearbox adopts a sliding tooth structure to realize gear shifting, which needs to be shifted in a parked state, and sometimes the gear is difficult to change in place, which will lead to slipping tooth splines or Relevant parts are damaged. At the same time, because the excavator needs to change between different gears when it is working, the labor intensity of the operator is very high.

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