Matched power takeoff for power transmission system with automatic transmission

Abstract

The invention provides a matched power takeoff for a power transmission system with an automatic transmission. The matched power takeoff comprises a casing; a hollow cavity is formed in the inner surface of the casing; an input shaft and an output shaft are coaxially arranged in the hollow cavity of the casing; the part, extending out of the casing, of the input shaft is connected with a power source; the part, extending out of the casing, of the output shaft is connected with an output accessory device; the input shaft and the output shaft are connected and separated through the combination and separation of a clutch; an electromagnetic valve is powered on, then the pressure oil pushes a piston to tightly compress the clutch, and the clutch is connected; the electromagnetic valve is powered off, the pressure of the pressure oil disappears, and the clutch is separated under the action of a spring; when the clutch is connected, the torque and the power of the power source goes to the output shaft through the input shaft and the clutch, and the connected accessory device is driven, so that the basic functions of the power takeoff are realized; the connection and the separation of theinput shaft and the output shaft are realized without stopping rotation of the input shaft or an output device, and meanwhile, a hydraulic oil source of the automatic transmission can be also conveniently used for controlling, lubricating and cooling.

Description

【Technical field】 [0001] The invention relates to a transmission auxiliary device, in particular to a power take-off device matching a power transmission system with an automatic transmission. 【Background technique】 [0002] Power take-offs are typically used with a power source such as an automotive engine, electric motor or transmission to provide drive power to auxiliary devices. For example, power take-offs are used on on- and off-highway vehicles to provide power to auxiliary devices such as oil pumps, water pumps, motors, compressors, articulating discs, fans, etc. Provide power to oil pumps and various accessories on industrial equipment. Provide power to lawn mowers and hoists on agricultural vehicles. Provide power to oil pumps, propulsion devices, etc. on marine vehicles. [0003] A typical power take-off device consists of a casing, an input gear extending outside the casing, and an output shaft extending outside the casing. When the power take-off device is i...

AI Technical Summary

Problems solved by technology

Because pneumatic power take-offs are generally shifted by sliding gear sleeves or sliding gears, the power needs to be cut off to achieve shifting when shifting gears, while hydraulic automatic transmissions cannot achieve power interruption

For the power source with automatic transmission that is more and more widely used at present, there is no matching power take-off device at present

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