Automatic control device of AMT chassis power takeoff

Abstract

The invention relates to an automatic control device of an AMT chassis power takeoff. The automatic control device comprises a loading control module which is in communication connection with a power takeoff pneumatic control valve and a TCU control module. The power takeoff pneumatic control valve communicates with a hydraulic-pneumatic safety valve through an air pipe. The power takeoff is connected with the power takeoff pneumatic control valve through an air pipe, the hydraulic-pneumatic safety valve is installed between an air taking port of a chassis and an air inlet of the power takeoff pneumatic control valve, and meanwhile an oil pipe connector of the hydraulic-pneumatic safety valve is connected with a loading hydraulic pump. When the work is started, a worker directly controls a loading module to disconnect a clutch; and the loading control module delays for 3S after sending to the TCU, the power takeoff pneumatic control valve is closed, a power takeoff control valve is switched on, the power takeoff is successfully engaged under the condition of sufficient air pressure, construction can be started at the beginning of loading, and the sequence of switching off the power takeoff is the same as the above conditions. The hydraulic-pneumatic safety valve is used in emergency, and the safety of a whole system and even a whole vehicle can be guaranteed without manual operation.

Description

[0001] The invention relates to an automatic control device for an AMT chassis power take-off, which belongs to the technical field. Background technique [0002] The power take-off is a common power take-off device in the special vehicle industry. Usually, the on-off problem of the power take-off can be realized through wire drawing and pneumatic control. In the past, the switch of the PTO was generally placed in the cab. When the bodywork was required, the worker had to go to the cab to step on the clutch and turn on the PTO switch. After the PTO was engaged, the parts of the bodywork could be officially put into work. At the same time, the separation of the power take-off also requires the worker to enter the cab, step on the clutch, and disconnect the power take-off switch before the power take-off can be disconnected. Many vehicles are operated by workers outside the cab, which will cause workers to frequently enter the cab to operate the power take-off device when they n...

AI Technical Summary

Problems solved by technology

Many vehicles are operated by workers outside the cab, which will cause workers to frequently enter the cab to operate the power take-off device when they need to operate, especially for some vehicles, which require frequent normal driving and loading operations, such as compression type rubbish truck

This will greatly increase the work intensity of workers and reduce work efficiency.

At the same time, it may happen that the workers forget to disconnect the power take-off and drive the vehicle normally, which will cause the power take-off to be overloaded and damaged, and even cause damage to the gearbox and engine lights.

Moreover, the engagement and disengagement of the power take-off needs to enter the cab to operate. If the whole vehicle breaks down suddenly, the workers cannot enter the cab in time to disconnect the power take-off and cause serious accidents.

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