A control method for an electric slewing system

Abstract

The invention relates to an electric revolution system, a control method of the electric revolution system and a transit mixer truck provided with the electric revolution system. The electric revolution system comprises a BSG engine unit, a power source, a controller, a mixing barrel and a mixing barrel driving assembly, the BSG engine unit comprises an engine, a belt and a BSG motor, and the engine and the BSG motor are in transmission connection through the belt; the controller is electrically connected with the power source and the BSG motor; the mixing barrel is used for mixing concrete; the mixing barrel driving assembly is connected with the mixing barrel and is used for driving the mixing barrel to run, and the mixing barrel driving assembly is electrically connected with the BSG motor and is electrically connected with the power source through the controller.

Description

technical field [0001] The invention relates to the technical field of mixer trucks. Specifically, it relates to an electric rotary system for a concrete mixer truck, a control method thereof, and a concrete mixer truck equipped with the electric rotary system. Background technique [0002] At present, most of the concrete mixing trucks produced at home and abroad use hydraulic-mechanical hybrid driving devices, which are characterized by controlling and speeding the system through the hydraulic transmission part, and using the mechanical part to slow down. Among them, the fixed displacement hydraulic system is the mainstream technology of concrete mixer truck. However, there are a series of problems in the fixed-displacement hydraulic transmission system: First, there is a coupling relationship between the engine and the hydraulic motor of the hydraulic transmission system, so the rotation speed of the mixing drum will change with the change of the engine speed, while the ...

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Problems solved by technology

However, there are a series of problems in the fixed-displacement hydraulic transmission system: First, there is a coupling relationship between the engine and the hydraulic motor of the hydraulic transmission system, so the rotation speed of the mixing drum will change with the change of the engine speed, while the stirring drum under normal working conditions The drum needs to run at a constant speed; secondly, in the starting and accelerating stages of the vehicle, the engine not only needs a large torque for the power of the vehicle starting and accelerating, but also needs to provide an additional torque load for the operation of the mixing drum, so the engine speed often appears Unstable, black smoke problem

At present, although the problem of variable speed has been solved by the variable pump, the price of the variable pump is relatively expensive and the function is relatively simple.

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