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 pinion or the intermediate gear meshes with both the spur and annular gears. We think you have liked this presentation. It consists of one, two or more ropes wound around the flywheel or rim of a pulley fixed rigidly to the shaft of an engine. Rotational Dynamics In pure translational motion, all points on an object travel on parallel paths.
Two stops S, S are provided to limit the motion of the lever. The most general motion is a combination of translation.
Due to this, the light does not reach to the eye piece as shown in Figure c. The pulleys A and B are connected by means of a continuous belt passing round the two loose pulleys C and D which are mounted on a T-shaped frame.
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.
The spur gear is keyed to the engine shaft and rotates in anticlockwise direction. A dynqmometer spring is provided between the nut and the upper block to adjust the pressure on the pulley to control its speed.
The annular gear is also keyed to the driving shaft and rotates in clockwise direction. Prony brake dynamometer 2. Bhaumik patel Nilay patel.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha – ppt video online download
If you wish to download it, please recommend it to your friends in any social system. Since the tension in the tight side of the belt T1 is greater than the tension in the slack epichclic of the belt T2 ,so the total force acting on the pulley C i. 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 above torsion equation the power transmitted. At every revolution of the shaft, a flash of light is projected through the slot in the disc A An eye piece E is fitted behind the disc B on the shaft bearing and is capable of slight circumferential adjustment.
Absorption dynamometers, and 2. A bright electric lamp L, behind the disc A, is fixed on the bearing of the shaft. V-belt drive V-belt is mostly used in factories and workshops where a great amount of power is to be transmitted from one pulley to another when the two.
There is another pulley B called driven pulley mounted on another shaft to which the power from pulley A is transmitted.
Dynamometers PRESENTATION ON: Guided by: Prepared by: Nirmal Kushwaha
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 upper end of the ropes is attached to a spring balance while the lower end of the ropes is kept in position by applying a dead weight as shown in Figure.
It consists of two discs A and B fixed on 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.
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Epicyclic-train Dynamometer-torque and power transmitted ()
Nirmal Kushwaha”— Presentation transcript: Nirmal Kushwaha Mechanical Deptt. A belt dynamometer is introduced to measure directly the difference between the tensions of the belt, while it is running. The pinion revolves freely on a lever. Auth with social network: The tangential effort P exerted by the spur gear on the pinion and the tangential reaction of the annular gear on the pinion are equal. A counter weight is placed at the other end of the lever which balances the brake when unloaded.
R And power transmitted. Engineering College Palanpur Name: In the transmission dynamometers, the energy is not wasted in friction but is used for doing work. It consists of a pulley A called driving pulley which is rigidly fixed tothe shaft of an engine whose power is required to be measured. Belt transmission dynamometer 3. In order to balance it, a weight W is applied at a distance L from E on the frame as shown in Figure.
The frame is pivoted at E and its movement is controlled by two stops S,S.