Interval transmission misoperation-preventing device for commercial vehicle

Abstract

The invention provides an interval transmission misoperation-preventing device for a commercial vehicle to smoothly shift from a low-speed gear to a high-speed gear during the interval transmission process of the multi-gear manual transmission of the commercial vehicle based on the driving information of the commercial vehicle. The interval transmission misoperation-preventing device for the commercial vehicle comprises a first switching valve 100 provided with a working pressure application port in linkage with an interval switch 54 on a gear-shifting handle 50 to realize the switching of ports; a shut-off valve 110 provided with a working pressure application port to realize the switching of ports during the transmission process shifting in the transmission mode 56 of the gear-shifting handle 50; a second switching valve 120 in linkage with the interval switch 54 to realize the switching of ports; an interval actuator 130 used for realizing the interval transmission based on the working pressure provided by the port of the second switching valve 120; and a safety control valve 140 used for limiting a working pressure signal from the first switching valve 100 to the second switching valve 120 through receiving a blocking signal based on the vehicle speed information.

Description

technical field [0001] The present invention relates to a device for preventing misoperation of section shifting of a commercial vehicle, and in particular to a section shifting of a commercial vehicle that can smoothly shift from a low gear to a high gear based on vehicle driving information when performing a section shift of a multi-speed manual transmission suitable for a commercial vehicle Misoperation prevention device. Background technique [0002] Generally speaking, a high-horsepower manual transmission installed in a large commercial vehicle uses a limited gear set to output power into a multi-speed gear ratio (12 gears or 16 gears, etc.), while having a power distribution gear set , with multiple synchronous mechanisms for switching the power transmission path. In addition, in the part where the driving force is finally output, in order to convert the rotation speed into a high state (constant speed transmission) or a low state (reduction transmission), a planetar...

AI Technical Summary

Problems solved by technology

[0021] That is, in the prior art, the driver originally wanted to realize the range shift from the 4th gear of the low state to the 5th gear of the high state, but did not start the range switch 54 due to an operation error, and then formed the speed change of the 1st gear as the low gear. , so that when driving at high speed, the engine and transmission will be impacted by sudden low-speed shifting, and the occurrence of these impacts will greatly reduce the durability of the engine and transmission

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