Soft braking and energy regeneration proportion control system of gearbox

Abstract

The invention discloses a soft braking and energy regeneration proportional control system of a gearbox. The system comprises a main pump control unit, an energy regeneration unit, a soft braking control unit, a fuel engine starting unit and an air increasing and dust blowing unit, the main pump control unit is connected to the energy regeneration unit, the soft braking control unit and the air increasing and dust blowing unit, the energy regeneration unit is used for storing energy and providing soft brake loads, the air increasing and dust blowing unit is used for dissipating heat or blowing dust to an air suction air filter and increasing the air inflow of an air suction port, the fuel engine starting unit is connected to the main pump control unit and the energy regeneration unit, the energy regeneration unit is used for providing energy for the fuel engine starting unit or providing working kinetic energy for the air increasing and dust blowing unit, and the fuel engine starting unit can also be used for controlling the main pump control unit to stop pumping oil in different emergencies of the hydraulic system. Hydraulic elements are reasonable in layout, various units are matched with one another, and the functions of graded braking, oil liquid heat dissipation, air filter element dust removal and fuel engine air inflow increasing can be achieved by fully utilizing hydraulic oil.

Description

technical field [0001] The invention relates to the field of vehicle hydraulic control systems, in particular to a soft braking and energy regeneration proportional control system of a gearbox. Background technique [0002] In the production and operation of heavy-duty vehicles in mining areas, due to their heavy-duty operation and complex road conditions, the hydraulic system in mining transport vehicles is very important. As an important part, it can be used for steering systems, service brake systems, lifting system. Also in the braking and passing of vehicles, the waste of hydraulic energy is also very common. The hydraulic system is a key technology in heavy-duty mine transport vehicles. Due to the load in the mining area, the road surface is undulating, especially there will be steep slopes or slopes. On a long slope, when the vehicle is in use, the brake pads are under braking for a long time, which is prone to brake failure, and engine failure will also cause engine...

AI Technical Summary

Problems solved by technology

Also in the braking and passing of vehicles, the waste of hydraulic energy is also very common. The hydraulic system is a key technology in heavy-duty mine transport vehicles. Due to the load in the mine area, the road surface is undulating, especially if there are steep slopes or slopes. On a long slope, when the vehicle is in use, the brake pads are under braking for a long time, which is prone to brake failure, and engine failure will also cause engine brake failure

[0003] For example, a patent titled a mining dump truck hydraulic brake control system disclosed in the Chinese patent database, the publication (announcement) number is CN202608756U, this mining dump truck hydraulic brake control system includes: hydraulic oil tank, oil suction filter Oil tank, variable displacement plunger pump, high-pressure oil filter, rear axle accumulator, front axle accumulator, brake filling valve group, emergency brake electromagnetic reversing valve, pilot brake control valve, loading and dry Wet road surface control valve group, front axle brake, brake light switch, rear axle brake, parking brake, parking brake cylinder, characterized in that the variable piston pump is used as the power source of the system, and the brake is adjusted according to the load pressure The displacement of the pump can achieve the purpose of energy saving and efficiency enhancement, but because the engine is used to provide power to the variable plunger pump, after the engine stops working due to failure, the braking system of the vehicle will fail, and this kind of mining dump truck The hydraulic oil in the hydraulic brake control system is only used for braking, and the utilization efficiency of hydraulic energy is relatively low

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