Electric excitation planet reduced speed type engine starting machine for vehicle

Abstract

The invention relates to a vehicle-used electric excitation planetary type engine starter, which mainly comprises an electric excitation mechanism, a direct current motor, a planetary speed reducer, a shifting fork mechanism, a driving mechanism, an output mechanism, an electromagnet, an insulation block, a terminal post and a driving shaft. The engine starter adopts the structural design of combining electric excitation, the direct current motor, the planetary speed reducer and the driving mechanism, and greatly improves starting moment of the engine. The outside of the starter adopts a flameproof structure, and the inside of the starter adopts a 24 V electromagnetic field and the direct current motor which are connected in parallel; the transmission speed ratio of the planetary speed reducer is 4.727 to 1; after speed reduction, the planetary speed reducer is linked with the electromagnet through the shifting fork mechanism, and is engaged and linked with link gears of the engine through the driving shaft and output gears; after conversion, the starting moment is more than or equal to 80 Nm, and improves by 50 percent compared with that of the prior motor; and the starting is fast and powerful. The device has reasonable design, compact structure, as well as convenient operation and use, and is an ideal starting device for engines of high-power explosion preventing vehicles with four cylinders and more than six cylinders.

Description

technical field [0001] The invention relates to an electric excitation planetary deceleration engine starter for vehicles, which belongs to the technical field of engine starters for diesel and gasoline engineering vehicles in coal mines. Background technique [0002] The diesel and gasoline engineering vehicles used in coal mines are explosion-proof, and most of their diesel or gasoline engines use air motors or starter motors to start the vehicles. [0003] Due to the different vehicle specifications, the starting torque of the engine is different, especially the construction vehicles have a large load and mostly work in harsh environments. Most of them use high-power engines with four cylinders or more than six cylinders, which require a large starting torque. In addition, engineering vehicles in coal mines Inlet and exhaust explosion-proof devices increase the resistance of air in and out, resulting in insufficient combustion, and the interference of harsh environments s...

AI Technical Summary

Problems solved by technology

[0003] Due to the different vehicle specifications, the starting torque of the engine is different, especially the construction vehicles have a large load and mostly work in harsh environments. Most of them use high-power engines with four cylinders or more than six cylinders, which require a large starting torque. In addition, engineering vehicles in coal mines Inlet and exhaust explosion-proof devices increase the resistance of air in and out, resulting in insufficient combustion, and the interference of harsh environments such as dust, water, and harmful gases that cannot be dissipated in time, which brings great difficulties to the starting of high-power engines. Conventional air motors are used Or the starter motor can no longer meet the starting needs of high-power vehicles due to its small starting torque. Forced starting of the vehicle will inevitably shorten the life of the starter motor, making the starting of high-power vehicles operating in harsh environments an important technical issue.

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