Table, Create, Delete, Add, Rows, Column, Delete, Row, Column, Add, Simple, XY, Pie, Chart. Data, Import, Export. Table, Create, Delete, Add, Rows, Column. FIGURE Epicyclic train dynamometer. direction. The power is transmitted from gear B to D through the intermediate gear C which revolves freely on a pin. This type of dynamometer can be classified as follows: 1. Epicyclic train dynamometer 2. Belt transmission dynamometer 3. Torsion dynamometer. EpicydiC train.
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The upper block has a long lever attached to it and carries a weight W at its outer end. V-belt drive V-belt dynamometed mostly used in factories and workshops where a great amount of power is to be transmitted from one pulley to another when the two.
The amount of twist depends upon many factors such as torque acting on the shaft T length of the shaft l diameter of the shaft D modulus of rigidity C of the material of the shaft. If the eye piece is now moved round by an amount equal to the lag of disc B, then the slot djnamometer the eye piece will be opposite to the slot in disc B as shown in Figure d and hence the eye piece receives flash of light. A bright electric lamp L, behind eppicyclic disc A, is fixed on the bearing of the shaft.
The annular gear is also keyed to the driving shaft and rotates in clockwise direction. Tgain helical spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed. My presentations Profile Feedback Log out.
Epicyclic-train Dynamometer-torque and power transmitted ()
Nirmal Kushwaha Mechanical Deptt. The pinion or the intermediate gear meshes with both the spur and annular gears.
Engineering College Palanpur Name: The upper end of the ropes is attached dynamomteer a spring balance while the lower end of the ropes is kept in position by applying a dead weight as shown in Figure. The energy or power produced by the engine is transmitted through the dynamometer to some other machines where the power developed is suitably measured.
The pinion revolves freely on a lever. Two stops S, S are provided to limit the motion of the lever. Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths.
In the absorption dynamometers, the entire energy or power produced by the engine is absorbed dpicyclic the friction resistances of the brake and is transformed into heat, during the process of measurement. It is thus obvious that the frame causes movement about E in the anticlockwise direction. For a solid shaft of diameter D, the polar moment of inertia for a hollow shaft of external diameter D and internal diameter d, the polar moment of inertia, From the spicyclic torsion equation the power transmitted.
Registration Forgot your password? Since the tension in the tight side of the belt T1 is greater than the tension in the slack side of the belt T2 ,so the total force acting on the pulley C i.
Auth with social network: Share buttons are a little bit lower. A counter weight is placed at the other end of the lever which balances the brake when unloaded. A weight w is placed at the smaller end of the lever in order to keep it in position. Bhaumik patel Nilay patel.
A little consideration will show that when the power is being transmitted, then the driving end of the shaft twists through a rtain angle relative to the driven end of the shaft.
The tangential effort P exerted by the spur gear on the pinion and the tangential reaction of the dunamometer gear on the pinion are equal. In order to prevent the slipping of the rope over the flywheel, wooden blocks are placed at intervals around the circumference of the flywheel.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
Absorption dynamometers, and 2. The spur gear is keyed to the engine shaft and rotates in anticlockwise direction. Due to this, the light does not reach to the eye piece as shown in Figure c.
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Prony brake dynamometer 2. It consists of two discs A and B fixed epicycljc a shaft at a convenient distance apart Each disc has a small radial slot and these two slots are in the same line when no power is transmitted and there is no torque on the shaft.