Summary:...
Gears are used to transfer power from one part of the machine to another. For example, on a bicycle, it is a power gear from the pedal to the rear wheel. Similarly, in a car, the gear will come from the crankshaft (the rotating shaft of power from the engine). ) The power is transmitted to the drive shaft working under the car. The drive shaft finally provides energy to the wheels. We can connect any number of gears, which can have different shapes and sizes. Each time, power is transmitted from one gear to another. We can all do two things. The gears of a gearbox bicycle will speed up. If two gears are connected, the first gear has more gears than the second gear. The second gear needs to spin faster to catch up. Therefore, this This configuration means that the second circle rotates faster than the first circle, but with less force.
Change direction: When two gears mesh, the second one always rotates in the opposite direction, so if the first one rotates clockwise, the second one must rotate counterclockwise. You can also use special-shaped gears to reduce the mechanical force. Rotating to an angle, for example, in automobiles, the differential (the transmission of the rear axle of a rear-wheel drive vehicle) uses bevel gears to rotate the power of the drive shaft by 90 degrees, thereby rotating the rear wheels.
Gearbox is a mechanical device used to decelerate/increase torque to increase or decrease. It consists of more than two gears, one of which is driven by a motor. The output speed of the gearbox is inversely proportional to the gear ratio. Gearboxes are usually used in conveyors and cranes. Constant-speed APP is preferred, which can increase torque.
The
planetary gearbox contains a drive gear with a certain diameter, and the drive mechanism (connected with a motor, wind generator, diesel engine, etc., the drive speed of the gear driven mechanism of another pinion gear is higher than the speed of the diameter driven mechanism when the drive mechanism is higher When it is less than the speed of the drive mechanism, it is only a mechanism of speed/torque increase/decrease or the opposite, which is an accessory of a mechanical motor.
The "gear head" sometimes moves on a timing belt or chain with a 1:1 gear ratio to reduce the transmission of motor vibration to the load.
A situation that is often overlooked-the gear head reduces the moment of inertia of the motor. In terms of the square ratio of the motor gear ratio, for example, if a gear head with a 4:1 ratio is installed, 2000rpm will be adjusted to 500rpm, but the load inertia will increase by 16 times .
When using a worm gear, the system will automatically lock and the load cannot be moved before the motor rotates.
There are other things with unique characteristics. For example, the ball screw is also a gear head, but it is usually not called a gear head. In addition, please note that the gears cannot run for free, which means that the power output will be reduced. In other words, the gears With a certain efficiency, there are various types of fronts such as branch line, planetary, first-level, multi-level, higher harmonics, spur, (cycloid), worm gear, etc., but this is a whole and different science.
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