Engineering machinery gearbox

Abstract

The invention discloses an engineering machinery gearbox which comprises a box body, an input shaft, an output shaft, a first transmission shaft, a second transmission shaft and a third transmission shaft, wherein the input shaft and the output shaft are arranged on the two sides of the box body respectively; the input shaft, the first transmission shaft, the second transmission shaft, the third transmission shaft and the output shaft are provided with a plurality of groups of transmission gears and a plurality of groups of clutches; the input shaft controls the multiple sets of transmission gears to be meshed through closing of the multiple sets of clutches, power is transmitted to the output shaft, and speed changing of three forward gears and three backward gears is achieved. The invention provides an engineering machinery gearbox which can realize three gears so as to meet the requirements of three typical working conditions of climbing, working and transition.

Description

technical field [0001] The invention relates to a gearbox for construction machinery, which belongs to the technical field of gearboxes. Background technique [0002] At present, tire rollers have two transmission forms of "motor + reducer" and "gearbox + wheel". Among them, due to the high cost of the motor, the transmission form of "gearbox + wheel" occupies a dominant position, but the variable speed currently used The box only has two gears, which cannot meet the requirements of the three typical working conditions of the tire roller, climbing, working, and transition. With the expansion of the working conditions of the tire roller, it is now required that the climbing gradient is not less than 30%, and the working speed is stable. 7~14km / h, the fast transition speed is not less than 20km / h, and if the two-speed gearbox is still used, the speed changes too much, and it cannot be well compatible with the requirements of working conditions. Contents of the invention [...

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Problems solved by technology

[0002] At present, tire rollers have two transmission forms of "motor + reducer" and "gearbox + wheel". Among them, due to the high cost of the motor, the transmission form of "gearbox + wheel" occupies a dominant position, but the variable speed currently used The box only has two gears, which cannot meet the requirements of the three typical working conditions of the tire roller, climbing, working, and transition. With the expansion of the working conditions of the tire roller, it is now required that the climbing gradient is not less than 30%, and the working speed is stable. 7~14km / h, the fast transition speed is not less than 20km / h, and if the two-speed gearbox is still used, the speed changes too much, and it cannot be well compatible with the requirements of working conditions

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