SU509811A1

SU509811A1 - Device for measuring the friction moment of rolling bearings

Info

Publication number: SU509811A1
Application number: SU1975676A
Authority: SU
Inventors: Лев Михайлович Геллер; Николай Иванович Кусков; Бер Лейзерович Смушкович; Анатолий Михайлович Улитин
Priority date: 1973-12-11
Filing date: 1973-12-11
Publication date: 1976-04-05

Description

1one

Изобретение отноСйТб , к измерительной технике, в частности; к устройствам дл из мерени мСмента трени подшипников качени .The invention relates to measuring equipment, in particular; to devices for measuring rolling bearing friction.

Известно устройство дл измерени момента трени подшипников качени , содержащее 5 вал, предназначенный дл установки испыты- ваем1)го подшипника, привод вращени вала, обойму, расположенную на наружном кольце ис .пытываемого подшипника и обеспечивающую его нагружение, стержневой посто нный маг.-10 нит, св занный с этим же кoльцo ч подшипника , управл емые катушки и систему региса рации момента трени с усилителем.A device for measuring the rolling bearing friction moment is known, which contains a 5 shaft designed for mounting a test bearing 1), a shaft rotation drive, a collar located on the outer ring of the bearing being tested and providing its loading, a rod constant magnet. associated with the same bearing ring, controlled coils and a frictional moment registration system with an amplifier.

Однако известное устройство имеет низкий коэффициент демпфировани , в св зи с этим 14 оно чрезвычайно чувствительно к вибрации, что затрудн ет регистрацию момента трени .с требуемой точностью.However, the known device has a low damping coefficient, and therefore 14 it is extremely sensitive to vibration, which makes it difficult to register the friction torque with the required accuracy.

Предлагаемое устройство отличаетс от известного тем, что оно снабжено двум 20 дополнительными катушками, одна из которых включена на: вход усилител и образует со стержневым посто нным магнитом датчик скорости колебаний а друга катушка вклю чена на выход усилител и образует со 25The proposed device differs from the known one in that it is equipped with two 20 additional coils, one of which is connected to: the amplifier input and forms, with a rod permanent magnet, an oscillation velocity sensor and the other coil is connected to the amplifier output and forms 25

стержневым посто нным вмаххнитом обратный преобразователь момента демпфировани .rod constant inverse inverter moment of damping.

Введение в устройство указанных элемен- тов позвол ет демпфировать вибрации благодар созданию обратным преобразователем момента, величина которого пртаорциональ на скорости колебаний.°The introduction of these elements into the device allows vibration to be damped due to the creation of a torque by the inverse transducer, the magnitude of which is proportional to the oscillation velocity.

На фиг. 1 изобрсжена схема предлагаемого устрсйства; в которой дл измерени мс 1ента трени используетс упругий элемен с тензорезистором; на фиг. 2 схема, в ко TGpoPi дл измерени момента трени исполь- зуетс компенсационна (след ща ) система. У-стройство содержит вал с устанюленным на нем испытываемым подагапником качени , на наружнсал кольце которого расположена нагружакшш ПОДШИПНИК ; обойма 1, привод BpameHH k вала (на фиг, 1 ненриведён-.г), рыча 2, св занный с обоймой и воздействующий на упрурий 3 с устансжленным на нем тензоризистором 4. На рычаге 2 расположен стержневой посто нней магнит 5. FIG. 1 shows the scheme of the proposed device; in which an elastic element with a strain gauge is used to measure the ms of friction; in fig. 2, in which a TGpoPi, a compensation (tracking) system is used to measure the frictional moment. The device contains a shaft with a test rolling roll fixed on it, on the outer ring of which the bearing is located; ferrule 1, shaft drive BpameHH k (in FIG. 1, not drawn-.g), snarl 2 connected to the ferrule and acting on the elastici 3 with the tensoristor 4 fitted on it. On the lever 2 the rod constant magnet 5 is located.

Claims

A coil 6 is used as an oscillation speed sensor; it is mounted on a 31 fixed base, turned on at the input of amplifier 7 and interacts with a tioo magnet 3. B: o (for example, a coil 8 is used), the distance is also non-moving the amplifier 7 is connected to the output g and is also interacting with d by the specified permanent magnet S. The device is equipped with a kok, is a leonation; the meter of the system (Fig. 2) contains a holder 9,: we test the outer ring from the bearing, also A shaft permanent magnet, which interacts with coils 11 and 12, is connected to the shaft, and is loaded with a coil -, - 1, and has 5 functions of the reverse torque, 14 coils, and an amplifier on the amplifier 14. , with a permanent magnet 10, they form a speed sensor i oscillations, and a pin 15, turned on 1– / turn of amplifier 14 and interacting with 10 permanent magnet 10, forms 6bratA, 1y1 damping torque converter. When the outer coil of the outer ring of the rod under test is fixed, the 25 constant 5 or 1O induces in the coil 6 or 13 sensors EMF proportional to the speed of oscillations. This EMF is amplified by amplification 7 or 14, at the output of which a coil of 8 or 15 o6paiw | Yu transform is turned on (damper torque detector. The magnetic field of the coil 8 or 15, interacting with a permanent magnet, creates a damping moment, the magnitude of which 35 is proportional to the oscillation velocity outer ring of the bearing. The damping moment is registered to the devices 16, which fix the value of the current passing through the coil 8 or 15. The invention 1, Device; for measuring the moment of friction of rolling bearings To install the test pad, drive shaft rotation, clip, located on the outer ring of the test pad, and loading it, rod permanent magnet, associated with the same support colt, controlled by catuips and registration system mЬm.9Nta Train with amplifier, About tl and "gh and w, 1d e its the fact that, with the aim of fO4HO (yn iemereyyny under the action of vibration, the device is equipped with two d (S10 coil, one of which includes 1a on the input of the amplifier and forms with rod core magnet sensor oscillation speeds, and the other attenuator is turned on at the output of the amplifier and forms, with a rod permanent magnet, an inverse converter of the damping moment.

2. The device according to claim 1, characterized in that, in order to obtain information about the condition of the rolling surfaces of the test case, a damping torque converter (provided with an output for recording a signal proportional to the oscillation speed of the outer ring of the lintel.

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