Multi-gear multivariant movable axis type semi-automatic control speed changing box

Abstract

The invention relates to a control speed changing box, and particularly relates to a multi-gear multivariant movable axis type semi-automatic control speed changing box. A variable pump driving mechanism, a forward gear transmission mechanism, a reverse gear transmission mechanism, a fast gear transmission mechanism and an output transmission mechanism are respectively arranged in the speed changing box; wherein the variable pump driving mechanism is mutually in engaging transmission with the forward gear transmission mechanism and the reverse gear transmission mechanism respectively, the forward gear transmission mechanism is mutually respectively in engaging transmission with the reverse gear transmission mechanism, the reverse gear transmission mechanism is mutually respectively in engaging transmission with the fast gear transmission mechanism; the fast gear transmission mechanism is mutually respectively in engaging transmission with the output transmission mechanism, the variable pump driving mechanism is arranged at an upper end in a speed changing box body, the forward gear transmission mechanism, the reverse gear transmission mechanism and the fast gear transmission mechanism are respectively arranged at a middle end in the speed changing box body, and the output transmission mechanism is arranged at a lower end of the speed changing box body. The multi-gear multivariant movable axis type semi-automatic control speed changing box has an advanced and reasonable structure, power consumption is small, transmission efficiency is high, and the control speed changing box can be matched with a high-speed engine, thereby realizing continuous gear shifting of power.

Description

technical field [0001] The invention relates to a control gearbox, in particular to a moving shaft semi-automatic control gearbox with multiple gears and multiple degrees of freedom. Background technique [0002] Construction machinery vehicles such as loaders and motor graders with multiple gears in the prior art basically adopt a gearbox with a hydraulic torque converter plus a fixed shaft structure, and each group of clutches is supported on the fixed shaft through roller bearings. The gearboxes of this type of structure generally have the following problems: first, the clutch of the fixed shaft structure can only use straight gears, and the working noise is large; The relative speed of the clutch friction plate is high, and the power consumption of heat and space is large. It needs to be equipped with a large radiator, and the transmission efficiency of the gearbox is low. [0003] Chinese patent 201120452230.3 discloses a high-load output shaft structure of a hydraulic...

AI Technical Summary

Problems solved by technology

The gearboxes of this type of structure generally have the following problems: first, the clutch of the fixed shaft structure can only use straight gears, and the working noise is large; The relative speed of the friction plate of the clutch is high, the heat consumption is large, and a large radiator is required, and the transmission efficiency of the gearbox is low

This structure is relatively complex, and the accuracy of matching is low, and the effect of use is general

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