Transmission mechanism of integral power shift hydraulic transmission for engineering machinery

Abstract

The present invention relates to a transmission mechanism of integrated dynamic gear hydraulic transmissions used for engineering machine, which is comprised of a single-stage single-phase radial inflow hydraulic torque converter and a dynamic gear fixed-axis type speed transform, the hydraulic torque converter is arranged on the front of the speed transform, the dynamic gear fixed-axis type speed transform comprises a weigh bar shaft paralleled with axes, a second shaft, a third shaft, an output shaft and an input shaft clutch parts arranged on the input shaft, a reversing gear connected rotationally on the weigh bar shaft, a second shaft clutch parts arranged on the second shaft, a first transmission gear fixed on the second shaft, a third shaft clutch parts arranged on the third shaft, a second transmission gear and a third transmission gear fixed on the third shaft, and an output gear fixed on the output shaft. The transmission mechanism not only forms transmission chain with four-stage speed on front and back, but also makes the structure of transmissions is reasonable and compact, the transmission torque is large, and the service life is long, also, the present invention is easy to assemble and disassemble, and convenient to maintain.

Description

technical field [0001] The invention relates to a component of an integral power-shift hydraulic transmission for construction machinery. The integral power-shift hydraulic transmission adopting the component can convert the speed and torque of the torque of a certain rotational speed transmitted from the engine. Background technique [0002] Existing construction machines such as loaders and motor graders need to realize the output of their main power through a speed change device when their engines are working. The integral power shift hydraulic transmission refers to a transmission that combines a hydraulic pitch changer and a power shift fixed shaft hydraulic transmission. The output shaft of the hydraulic pitch changer and the input shaft of the power shift fixed shaft type hydraulic transmission are the same shaft. [0003] Chinese patent document CN2599318U discloses a power transmission hydraulic transmission capable of driving the front and rear axles. It is mainly...

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