SU412503A1 - DEVICE FOR MEASURING THE MOMENT OF BRAKE CLUTCH - Google Patents

Description

one

The invention relates to mechanical engineering and can be used to measure the torque of brake couplings during their testing.

In the known devices for measuring the clutch torque, the torque is measured by means of a spring connecting the driven coupling half with the housing; lr, and this arises due to the crossing of the half-couplings.

In the proposed device, the coupling half and the I3mer are known, the model is rigidly mounted on the housing, and the shaft of the meter for coupling is connected to the driving coupling half.

FIG. Figure 1 shows the kinematic scheme of the device for measuring and setting the limiting torques of the safety clutches; on fig. 2 is a graph of the dependence of the limiting torque of the coupling on the smooth rotation when sliding; on f; 3 - the traffic of the dependence of the limiting steepness pd of Moments on the angle of rotation φ, with A const.

Safety clutch 1 consists of coupling halves 2 and 5, one of which is charged. The coupling coupling / is set by means of a spring 4. The leading coupling half 2 is connected via gear backlash-free transmission 5 with a rotation angle indicator 6, traced (In units of torque, and through a cam electromagnetic clutch 7 with source 8 kinematic energy, which consists of the drive 9 , electromagnetic clutch 10, gear // and flywheel 12 with adjustable moment of inertia with the help of the radial displacement of movable goods (as shown in Fig. 1 arrowheads .4 and B).

The drive shaft / source 8 is connected, and is attached to the speed sensor M. Through an electromagnet clutch 15, a source of kinematic energy is connected with a bar 16, onto which a cable is wound through a block / 7 with a load 18 moving relative to a scale of 19. The amount of displacement is registered by an indicator 20.

After the installation of the coupling / and the connection of the semi-coupling 2 with the source 8, the kinematic enne, rgii, turn on the output channel 9 and the coupling 10, and this cam coupling 7 is turned off. The frm sprint gear drive // l flywheel J2 to the necessary speed determined by the gauge 14 speeds. After reaching the speeds installed on the sensor, the coupling 10 is switched on and the cam coupling 7 is turned on, and all the kinel1t1aakaya energy of the rotating masses is transmitted to the leading coupling half 2, which goes to the friction work: disks, rotated the leading coupling half 2 to the definite angle, measured by the pointer 6.

The installation of the necessary moment is carried out with the help of an adjusting spring; INA 4. The installation of a given value of kinematic energy and at the source is carried out using a calibrator pr, ioposo: blend, and for this purpose, the SOURCE 8 is disconnected using a jacket. 15 from the ban bar 16 include the actuator 9, rotated the flywheel mass to a certain number of 0, 6oipOTOB, determined by the sensors of 14 speeds. After the transfer of the signal from the speed sensor 14, the clutch 10 is disconnected, and the coupling 15 is turned on, and all the kinematic energy of the source 8 is transferred to pai6oTy by lifting the load 18, which rises and the drum 16 rotates. .determine the kinetic energy of the source.

Regulus, ir | 0.vku zergirgii (produced either by changing the moment of inertia of the flywheel 12 at the expense of; are moved: x. In radial load handling (as shown in Fig. 1 by arrows A B), due to the change in speed of the landing shaft 13. Of the source, registering my dataciquiM 14 C (Korostey, changing its installation, which allows you to disable the output of 9 and connect the source to the remote) of the grounding clutch at any given speed.

According to the graph of the dependence of the limiting steepness of the moment of the coupling on the angle of rotation during slippage, shown in FIG. 2, by asking. If the angle of rotation or slip is determined, the work of friction discs A Eh (shaded area in the graph) is determined, where the Ell is the kinetic energy of Istone. Ik. According to the schedule, the dependence of the limiting torque of the torque on the angle of rotation φ, pr. And L const (A is absorbed by the E. Nagi coupling.

pr.i braking) presented on f. 3, depending on the value of the limiting moment of the coupling. The corresponding angle φ is found, KOTiOipbm is determined by the angle of rotation indicator.

For greater accuracy, it is recommended to use when determining the angle f of the middle sections.

Pre iM et t o b r e te n

A device for measuring brake clutches, comprising a housing, an actuator, a source of adjustable kinetic energy with a gauge, and an angle meter, characterized in that, in order to increase accuracy, the lead-magnitude coupling and the angle gauge are fixedly mounted , and the shaft. Measuring the angle is connected with the leading loumoufta.

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