Mechanical Clutch is a technical system which consists of two shafts, with positions that are relatively fixed and another which is relatively variable. The system ensures transmission of torque and rotation moment between the shafts. The bundle between the shafts is realized by the mechanical clutch and its role is to ensure power transmission. Engineering in Kenya has more articles.
This clutch can either be of electrical or mechanical type. Due to the need for small and compact clutches and those which can be utilized in limited space, and with few moving parts as possible, Mechanical Clutch designs face great challenges in most industries. A torque converter is a type of fluid which couples and allows the engine to spin independently. It has four major components in it, these components includes a pump, turbine and transmission fluid. It also has a stator which is located at the centre of the torque converter. Its function is mainly to redirect the fluid from the turbine before it gets to the pump again. The Mechanical Clutch found inside the stator usually connects to a fixed shaft for transmission.
Mechanical Clutch Types
They are of three types. These include the ratchet, roller ramp and cam. Ratchet clutches are the most primitive design of them all. It is composed of two parts which are interlocking. It also has a toothed piece freewheels which spins in one direction and locks up in the other. Roller ramp is a bit more advanced to ratchet clutches. Roller ramp clutches contains ground rollers. These ground rollers operate together with the inclined ramp and compression springs in order for them to engage. This type of clutches often experience challenges especially with deflection and stress in the inner and the outer races. Roller ramps are limited by their design. This is as a result of the geometry of inclined ramp. Due to the geometry, the Mechanical Clutch limits the number of load bearing elements which can be integrated together with the package. Cam clutches provide the best density since it allows more load bearing elements to be packaged into the same space. The load carrying element added facilitates the even distribution of load and stress; this in turn reduces the deflection and contact stress in the inner and the outer races. Moreover, it improves the engagement especially when compared to roller ramp clutch. This is because cam has independent cam actuation.
Selecting a Mechanical Clutch
Several factors should be put into consideration during the selection of such a clutch. These include first, shaft configurations. They should be in line with the axis of the load and lie parallel and offset from the axis, it should be perpendicular to the axis. Measurements is another thing that should be put into consideration, these are the diameter, cross sectional width of the assembly, the lengths and all the dimensions of axis of rotation. Drive and load connections should be appropriate, the shafts should attach to bores or flanges. Drive components of mechanical shaft differ. Such drive components include pulley, gear or sprocket. From various studies, the Mechanical Clutch is not common and has been replaced by hydraulic mechanical clutches.
Conclusion on Mechanical Clutch
In conclusion, mechanical clutches are the simplest design of clutches. They are mechanically actuated and generally the cheapest of them all.Mechanical Clutch is actuated through hand, or foot designed operation linkages or cables to cause engagement. This article has details on a Mechanical Clutch