SU691702A1 - Apparatus for measuring output of a motor - Google Patents

Description

. -. The invention relates to the field of force-measuring equipment, in particular. The device for measuring engine power of autotractor and other engines, the well-known device for measuring engine power, containing two coupling halves mounted on the leading driven shafts and interconnected by a lever system with mechanical revolution counters, does not provide the required accuracy of 1. Most Close to the technical essence and the achieved result of the image is a device for measuring engine power, comprising a shaft housing with a flywheel mounted on a bearing Alami, associated shaft coil spring, a mechanism for fixing the flywheel, and a tachometer latching pawls 2. A drawback of this device is the low accuracy of measurement associated with Otsu Corollary adjustability zhestg spiral spring bone, as well as inconvenience and readout. Satisfactory conditions exploit,. open rotating parts. {;; The aim of the invention is to improve the measurement accuracy by providing adjustment of the stiffness of the coil spring and ease of reading, as well as ensuring operational safety. In the device described, this goal is achieved by the fact that it is equipped with an adjustable bracket mounted on a shaft inside the fixed housing with a adjustable clip for the coil spring and a bracket with a special arrow, and the locking pawns are installed in the fixation mechanism of the windrow and also equipped with a fixed from the case of the end of the shaft overrunning clutch with a steering wheel. Figure 1 shows the device common in Fig, 2 is a section along aa in figure 1. A device for measuring engine power contains a prefabricated housing 1, in the side walls of which a shaft 2 is mounted on plespaykas. In the middle part of the shaft, a flywheel 3 with a pin 4 is installed on the bearing. The coil spring 5 is fastened at one end with the shaft 2, and the other with a pin stop 4. On the opposite end of the flywheel pin of the flywheel, the teeth are cut, and on its outer cylindrical surface

applied scale. In the annular flow-. ke shaft 2 installed krsenshtej-stop b with arrow 7,. .

In the initial position, the coil spring 5 presses the flywheel 3 with a pin 6 mm1 4 to the arm 6, and the arrow 7 is placed against the scale of the flywheel.

On top of the hub of the bracket b, an adjustable bracket 8 is placed with screw-screws 9 fixed on it and the switchable part of the turns of the spiral spring with clamp 10, KpoHiaTieRH seal 6 and adjustable bracket 8 can rotate relative to the axis of the shaft 2; they are fixed in certain positions with screws 11, the passage of the slits through elongated holes on the rim, rigidly fastened to the shaft 2 of the disk 12. On the side of the flywheel teeth on the shaft, wa shyuyke, the movable disk 13c is placed on it of the axle 14.

During the spinning of the disk 13 from the flywheel, the pawl 14 is disengaged from the teeth of the flywheel. The disc 13 is pressed from the flywheel when the handle 15 of the mechanism 16 is turned.

At the end of the shaft 2 coming out of the hull, the overrunning clutch It with the helm 18 is fastened. The rotor tip of the generator 19 is connected to the other end of the shaft.

To set up the device, i.e., increase or decrease the spring pi, you must loosen the screw 1: s 9 And rearrange the clip 10 by bracket 8, turning off or turning on the necessary 1 spiral turn of the coil spring 5. When Heo6xOAHMoctH the production of the bracket 8, dl weakened Viitas 11 and cr | onstep0 | | are available on the axis of the shaft axis 2 at the required angle.

The device is put on - on the shaft of the engine and krrzdteyn engine 21. is mounted on its Kojprtyce. Engine running; on miny shb. The sensor shaft; a 2 and the flywheel 3 rotate with the same angular sensitivity. Further increase

the number of revolutions of the motor to be rotated. Since the sensor shaft is rigidly coupled with the engine shaft, its speed will increase accordingly. The acceleration of the rotation of the shaft is lagging behind the acceleration of the shaft and the coil of the spring is twisting. The lag of the flywheel 3 is fixed by the dogs 14. On the scale ,. marked on the flywheel, with the help of the arrow, the lagging rate and, consequently, the acceleration value and the power of the tested engine are determined. .

For reading, the power take-off shaft is disconnected from the engine. The shaft of the device is rotated at the handwheel 18 to the position at which cTpejijca 7 is positioned at pkna 20. When the shaft of the device 2 pins 18 rotates, due to the overrunning clutch 17, it does not rotate, which is a prerequisite for safe operation.

To return the flywheel to its original position, it is necessary to turn the handle 15 of the 16-clamp mechanism. With a stPM squeeze disc 13 will move away from, the flywheel and the pawl 14 will come out of the clutch with the teeth of the flywheel 3.

Claims (2)

1. A device for measuring the engine, comprising a housing / shaft with a spring coil attached to it on a Maitobkom sub-stud with scales connected to the shaft by a spiral spring, a mechanism for fixing the flywheel, locking the pawl and tachometer, which is tally and so that in order to increase the precision of the field due to the need to adjust the stiffness of the spring and the readings, the oyo is equipped with an adjustable bracket mounted on the shaft shaft of the movable body with a adjustable clip for the coil spring and the support bracket an arrow, and locking dogs installed and the mechanism of fixation, makhbvyk p. 2. The device according to claim 1, that is, in order to ensure the safety of work, it is equipped with an overrunning clutch installed on the end of the shaft coming out of the case with the steering wheel.  Sources of information taken during the examination 1. USSR author's certificate 228990, c. Oil. 3/04, 1967. 2. Authors certificate of the USSR 470718, cl. G 01 I 3/06, 1972.