Planetary gear reducer, also known as planetary reducer, planetary gear reducer or gearbox. In the reducer family, planetary reducers are widely used in transmission systems such as automotive transmissions, smart homes, communication equipment, robots, mechanical equipment, industrial automation, etc. due to their small size, high transmission efficiency, wide deceleration range, and high accuracy. The reduction range of planetary gear reducers is wide. When selecting technical parameters, it is necessary to calculate the reduction ratio in order to choose a reducer with a reasonable reduction ratio.

The calculation formula for planetary gear reducers is influenced by factors such as transmission ratio calculation, gearbox efficiency, power and speed torque, current, and efficiency.

1、 Calculation formula for reduction ratio:

Formula: n1/n2=i

1. Definition calculation method: Reduction ratio=input speed ÷ output speed, the ratio of the connected input speed to output speed. If the input speed is 1500r/min and the output speed is 25r/min, then the reduction ratio is: i=60:1

2. Gear system calculation method: Reduction ratio=number of driven gear teeth ÷ number of driving gear teeth (if it is a multi-stage gear reduction, then multiply the number of driven gear teeth ÷ number of driving gear teeth of all meshing pairs of gears to obtain the result).

2、 Transmission ratio calculation formula:

Planetary gearbox: First stage: i=(number of internal gear teeth/number of sun gear teeth)+1

Multi level: i=i1 * i2 * i3

3、 Calculation formula for gearbox efficiency:

Planetary gearbox: Stage: η= 0.9 * 0.9 * (Normal ST28P, ST32P, ST36P, and ST42P are calculated based on this)

56% (low efficiency in ST16P \ ST22P, calculated based on this, technical department needs to improve)

Multi level: η=η 1 * 0.9, where n is the number of stages

With the increasing number of intelligent products, our dream is to live in a smart home scene. In the morning, what wakes you up is not an alarm clock, but your curtains slowly pull open, and the sunlight outside the window projects to wake you up; When the sky gets dark in the evening, the curtains will slowly and automatically pull up, activating the night mode. This is the smart curtain, which only requires us to move our fingers to open and close the curtains, saving us manual trouble and allowing us to better enjoy life. Today, let's talk about the core equipment of the smart curtain - the gearbox of the deceleration motor.

In our daily lives, curtains are also made of different fabrics and designs due to the different rooms. For example, curtains in the bedroom require higher shading ability and are thicker. The professional Duya intelligent electric curtains are equipped with high-quality DC silent motors with high torque, and the guide rails also have strong load-bearing capacity. Even curtains weighing up to 50kg can be easily driven. Perhaps people would say that a heavy curtain motor can drive it, but can the motor still be a silent motor?

In fact, high-quality DC silent motors have very little vibration compared to ordinary motors, making them quieter and suitable for household use. In addition, special sound insulation and noise reduction technology make the noise generated during operation less than 30 decibels, making it difficult to be noticed in pure quiet environments. In addition, professional intelligent electric curtains are equipped with built-in transformers, which can be used in a wide voltage range of 110V~240V, ensuring that there will be no "strike" due to unstable voltage at home.

With the popularization of smart living, people are starting to learn to enjoy the fun brought by smart living. High quality smart curtains add a bright color to our intelligence in life. Not only are they awakened by the sun during the day or pulled back in the evening, but it feels like this intelligent electric curtain will be well integrated into your life.

The structure of the intelligent curtain tubular motor:

The main structure of a tubular motor is assembled from an electric motor and a gearbox. It has the function of slowing down and increasing torque. The electric motor provides high-speed, low torque output, and the gearbox is connected to the electric motor. In the case of meshing transmission between the large and small gears in the gearbox, the output speed of the motor is reduced and the torque is increased to drive the curtains, achieving the ideal transmission effect. We usually use DC motors, stepper motors, and brushless motors as the transmission power, speed ratio, torque, and speed can be customized according to requirements.

Application of intelligent electric curtain tubular motor:

The tubular motor is suitable for various types of tubular curtain motors, suitable for intelligent electric curtains, roller blinds, blinds, opening and closing blinds, sunshades, Roman blinds, soft blinds, wind blinds, honeycomb blinds, electric opening and closing curtains, electric blinds, outdoor sunshades, outdoor blinds, outdoor sunshades, hollow blinds, fully or semi shading blinds.