Brushless open-loop control permanent magnet synchronous plunger oil pump motor

Abstract

The invention discloses a brushless open-loop control permanent magnet synchronous plunger oil pump motor. The motor comprises a motor body part and a plunger pump part, wherein the motor body part comprises a rotating shaft, a rotor assembly, a stator assembly, a shell, a front end cover and a rear end cover; the plunger pump part comprises a plunger cylinder body and a plunger connected with themotor body part, a flywheel is arranged on the rotating shaft, an eccentric shaft is further arranged at the front end of the rotating shaft, the eccentric shaft is sleeved with a first bearing, andthe first bearing abuts against the plunger and pushes the plunger to reciprocate in the plunger cylinder body. The rotational inertia of the rotor is improved through the flywheel, so that the motorrotor has an energy storage function, the peak output capacity of the motor can be effectively reduced, the oil pump can output more stably at a rotating speed in cooperation with the plunger pump, and the oil pump is lifted uniformly.

Description

technical field [0001] The invention relates to the technical field of oil pump motors, in particular to a permanent magnet synchronous plunger oil pump motor with brushless open-loop control. Background technique [0002] The existing truck head lifting system is an oil pressure system, and the power source is a brushed motor, but the life of the carbon brush of the brushed motor is relatively low, and the life consistency is not good, and the sound is too loud, so it is necessary to develop a brushless motor as a power source . In response to market demand, while meeting the performance requirements, the cost cannot be greatly increased. Therefore, the brushless motor will adopt a square wave open-loop control method without an encoder. Since there is no encoder, there are fewer parts and the motor is more reliable. , but developed according to the conventional permanent magnet synchronous motor, the size of the motor will be too large, and the cost will be high, which ca...

AI Technical Summary

Problems solved by technology

[0002] The existing truck head lifting system is an oil pressure system, and the power source is a brushed motor, but the life of the carbon brush of the brushed motor is relatively low, and the life consistency is not good, and the sound is too loud, so it is necessary to develop a brushless motor as a power source

In response to market demand, while meeting the performance requirements, the cost cannot be greatly increased. Therefore, the brushless motor will adopt a square wave open-loop control method without an encoder. Since there is no encoder, there are fewer parts and the motor is more reliable. , but according to the development of conventional permanent magnet synchronous motor, the size of the motor will be too large, and the cost will be high, which cannot meet the market demand

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