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This article mainly introduces what pto switch means, the text is very detailed, has a certain reference value, interested friends must read it!

pto is a group or multiple groups of transmission gears, also known as power take-off, generally composed of a combination of gear box, clutch, controller, and transmission gear or auxiliary box output shaft connection, power output to external working devices, such as lift pumps.

Operating environment: Windows 7, Dell G3

Power Take-Off (PTO), is a group or multiple sets of transmission gears, also known as power take-off, generally composed of a combination of gearbox, clutch, controller, and transmission gear or auxiliary box output shaft connection, power output to external working devices, such as lift pumps. Transmission gears include common external gear, common internal gear and planetary gear.

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According to the different control methods, the power take-off has mechanical control, hydraulic control, pneumatic control, vacuum source control, electronic control and other control methods, among which pneumatic control is more common.

According to the different forms of power output, it can usually be divided into transmission side power output form, transmission front power output form, transmission rear power output form, engine front power output form.

1. Transmission side power output form

Generally, the intermediate shaft of the transmission outputs power at a certain gear, or the reverse gear cam outputs power, due to structural constraints. This power output mode can only output one-half of the maximum power of the engine, and at most it will not exceed one-half.

Therefore, it is called partial power output, which is mostly used in dump trucks, garbage trucks, aerial work, crane trucks and tank trucks. The operation can be manually operated mechanically, or it can be controlled by pneumatic, hydraulic, electromagnetic control switches to control engagement and disconnection, or it can be controlled by push-pull flexible shaft.

2. Transmission front power output form

Set between the transmission and clutch, can obtain the maximum power of the engine, so called full power output power take-off. The design of this power take-off must focus on oil temperature and lubrication, and if necessary, forced lubrication and cooling devices can be added. This structure makes the modification of fire trucks more convenient.

3. Transmission rear power output form

It can be roughly divided into the rear end power output form of the intermediate shaft and the rear end power output form of the second shaft.

Intermediate shaft rear end power output form

The power take-off is directly fixed on the rear end face of the transmission, and a spline is made at the rear end of the transmission or a gear is connected as a power output, so that the maximum power of the engine can be taken out.

Second shaft power output form

The power take-off is fixed on the rear end face of the transmission, and a gear is additionally arranged at the output end of the second shaft as power output, so that the maximum power of the engine can be obtained, and the rotating speed can be changed through the gear position of the transmission, but the structure is complicated, and the modification of the transmission is relatively large. The rear power output of the above two transmissions is mostly used in fire trucks, concrete mixers, delivery pumps and forklifts.

4. Engine front power output form

Generally from the engine front crankshaft pulley with triangular leather output power, drive power take-off. This output mode can take power at any time, but only part of the power output, mostly used on the mixer, there are free wheel power output and power output on the transmission shaft.

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