Electric-controlled shifting mechanism for engineering machinery

Abstract

The invention discloses an electronic gear shifting mechanism for construction machinery, essentially comprising an input unit, an analysis unit, an execution unit and a feedback unit, which are connected serially. The input unit is connected with the direction column of a cab. A gear shifting signal is sent out by the combination handle of automatic resetting collection type and then transported to the analysis unit. The analysis unit processes the inputted gear shifting signal and provides an execution signal for the execution unit according to a position signal sent back by the feedback unit. The execution unit executes the execution dictates sent out by the analysis unit; consequently the gear shifting motion can be realized. The feedback unit tracks and sends back the actual situation of the gear shafting and transports the feedback signal to the analysis unit. The gear shifting movement of the invention accords with the stated operation mode, effectively prolonging the service life of a transmission case. Based on the change of the prior transmission case, the prior power source and the air supply of the vehicle can be used directly to realize the automatic operation mode of the speed-shifting mechanism without changing the transmission case and increasing the power unit. With a good succession, the production grade can be obviously improved.

Description

Technical field: [0001] The invention relates to the engineering machinery industry, in particular to the gear shifting system of the loader series. Background technique: [0002] At present, there are two types of shifting mechanisms known to be used on loaders: mechanical operating mechanisms such as matching domestic gearboxes and electro-hydraulic shifting mechanisms such as matching German ZF automatic transmissions. Electro-hydraulic gear shifting is widely used in foreign countries, and the structure of the gearbox is complex and the cost is high. At present, the traditional mechanical manual shift mechanism (rigid linkage mechanism or flexible shift shaft structure) is widely used in China, but this type of shift mechanism has many transmission "nodes" and the operating space of the shift handle is large, so As a result, it is difficult to assemble and adjust, the transmission efficiency is low, and the shifting is "heavy". Frequent shifting during driving is easy t...

AI Technical Summary

Problems solved by technology

Electro-hydraulic gear shifting is commonly used in foreign countries, the structure of the gearbox is complex, and the cost is high

At present, the traditional mechanical manual shift mechanism (rigid linkage mechanism or flexible shift shaft structure) is widely used in China, but this type of shift mechanism has many transmission "nodes" and the operating space of the shift handle is large, so As a result, it is difficult to assemble and adjust, the transmission efficiency is low, and the shifting is "heavy". Frequent shifting during driving will easily cause tension and fatigue of the operator, and the safety hazards are increasing year by year.

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