Planetary gear stepless speed changer and control method

Abstract

The invention discloses a planetary gear stepless variable-speed motor and a control method. The planetary gear stepless variable-speed motor is composed of a planetary gearbox and a stepless gearbox.The planetary gearbox is composed of a planetary gear, a sun wheel, a gear ring, a driven gear, a driving gear and a gearbox shell. The stepless gearbox is composed of a reverse rotary shaft, a sun rotary shaft, a shell, an upper end cover, a lower end cover, a porous round plate, a friction conical bearing, a round inner brush strip and an outer brush strip. An air compressor, an air storage tank, a hydraulic oil tank, an engine oil tank, a compressed air tank, a hydraulic piston, a one-way valve, a solenoid air inlet valve, a solenoid exhaust valve, a three-position five-way solenoid reversing valve, an air storage tank pressure sensor, a hydraulic oil tank pressure sensor, an engine oil tank pressure sensor, a compressed air tank pressure sensor, a liquid level upper limit switch and aliquid level lower limit switch are arranged on the periphery of the stepless gearbox. The rotating speed of an output rotary shaft is adjusted by adjusting the friction force of the friction conicalbearing and the number of circles of the inner brush strip and the outer brush strip buried by engine oil.

Description

Technical field: [0001] The invention relates to a planetary gear stepless speed changer and a control method. Background technique: [0002] The speed adjustment range of AT and CVT is very small, and the automatic transmission car is adjusted through three gears, that is, the input shaft of AT and CVT is through three hydraulic clutches and three gears. The shafts of gears with different speeds are connected. The input and output shafts of AT and CVT continuously variable transmissions are driven by friction. AT and CVT continuously variable transmissions have low efficiency when the slip ratio between the input and output shafts is large. The minimum efficiency of AT and CVT is only 60%, and 40% of the power is converted into heat energy through friction, and the heat needs to be taken out by engine oil before cooling, so automatic transmission cars consume more fuel. When a manual transmission car goes uphill, put it in a low gear, and the output speed will decrease un...

AI Technical Summary

Problems solved by technology

The input and output shafts of AT and CVT continuously variable transmissions are driven by friction. AT and CVT continuously variable transmissions have low efficiency when the slip ratio between the input and output shafts is large. Yes; the minimum efficiency of AT and CVT is only 60%, and 40% of the power is converted into heat energy through friction, and the heat needs to be taken out by engine oil before cooling, so automatic transmission cars consume more fuel

When a manual transmission car goes uphill, put it in a low gear, the output speed will decrease under the same power, the torque of the output shaft will increase, the torque of the wheel rotation will increase, and the car will easily climb up the high slope

Images