Explanation/Annotation:Completing article in the composition of test stands and research of p
åðåäà÷ (toothed, friction, chain, belt), various of couplings and
other elements and components of machine.
Detailed model description:Is completing article of booths, intended for
creation of permanent or subject to variation on specified law of static
loads on rotating shafts of machines, main spindles, shafts electro-
or hydraulic engines, driving shafts of boxes of gear and boxes of feed
on trial of them on strength, the rigidity and the wear resistance, and
also in case of frequency-response analysis.
the brake it is possible to apply in-machines, for example in coiling,
øåâèíãîâàëüíûõ and other, when on engineering procedure it is necessary
to maintain the permanent load or to modify it on specified law.
with the help of brake it is possible to withhold shafts from gyrations with exactly
stipulated by the time.
total technical data and the characteristics
electromagnet powder breakers
the size of brake shaft torque of brake shall be changed
in proportions to magnetizing current (voltage) from nil to
nominal values.
limit value of time, which can provide the brake,
depends on mixture concentration of ferromagnetic powder and butter.
the static characteristic of brakes in general represent from
itself dynamic hysteresis loop. The hysteresis on braking torque is
consequence of gradual concentration change of magnetic mixture in
magnetic gap under the influence of constant magnetic field. Loop width
hysteresis by the greater, more is size as well as time of imposing
magnetic field on magnetic gap.
with values of braking torques to about 40% from nominal
the loop width insignificant. In case when the bear loads shall be changed
fast enough, the static characteristic of brakes one can consider
anhysteretic.
for cooling of brake should be used the water from water-pipe
network or autonomous pump station. In case of accession of system
brake cooling is necessary to provide free discharge. The pressure
water network must not exceed 0, 5 MPa.
the maximum allowable rotational speeds
the maximal rotational speed, ìèí-1 4000
rated speed, ìèí-1 1500
brake time, corresponding nominal 3, 9
dissipation power, nm |
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