Tractor and power transfer device

Abstract

The invention provides a tractor and a power transfer device thereof. The power transfer device comprises a front axle, a clutch, a speed reducer, a transmission, a hydraulic pump, a hydraulic motor and multiple universal transmission devices; the front axle is connected with the transmission through the universal transmission device; the speed reducer is arranged on the clutch; the clutch is connected with the transmission through the universal transmission device; the speed reducer comprises an input shaft; the hydraulic pump is arranged on the input shaft; when the input shaft is rotated, the hydraulic pump is driven to rotate; the transmission comprises a speed change module; the speed change module comprises a direct connecting input shaft and an intermediate shaft; the intermediate shaft and the direct connecting input shaft are arranged in parallel; a secondary input shaft sleeves the direct connecting input shaft; the hydraulic motor is fixedly arranged at one end of the intermediate shaft; and the hydraulic motor can provide power to the direct connecting input shaft and / or the secondary input shaft.

Description

technical field [0001] The invention relates to the field of tractor machinery, in particular to a tractor and a power transmission device. Background technique [0002] Because the articulated tractor adopts the articulated frame, the hinge point of the front and rear frame deflects to steer during the operation of the vehicle. It has a small turning radius and strong maneuverability. Articulated tractors are usually longer than wheeled tractors because of the hinge point steering, which adds a hinge point in the middle of the frame. At present, in the widely used articulated mountain tractors on the market, the hinge point is mainly arranged at the rear end of the transmission, which makes it difficult to shorten the length of the fuselage. As the horsepower of agricultural machinery increases, the engine and its power plant are constructed longer, resulting in an increase in the length of the fuselage, while reducing the maneuverability of the articulated vehicle. [00...

AI Technical Summary

Problems solved by technology

At present, in the widely used articulated mountain tractors on the market, the hinge point is mainly set at the rear end of the transmission, which makes it difficult to shorten the length of the fuselage

As the horsepower of agricultural machinery increases, the structure of the engine and its power plant is longer, resulting in an increase in the length of the fuselage, which reduces the maneuverability of the articulated vehicle

[0003] Articulated mountain tractors can be used not only for road transportation, but also for field operations. Due to the wide range of operations and complex changes in working conditions, a single manual transmission is difficult to meet the needs of complex working conditions

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