SU1180723A1 - Arrangement for measring bearing antitorque moment - Google Patents

Abstract

A DEVICE FOR MEASURING THE MOMENT OF RESISTANCE TO ROTATION OF BEARINGS, containing a frame, a shaft mounted on it for mounting bearings, axial and radial loading mechanisms for the test Air AGROA. ., bearing, shaft mounted technology bearing and torque resistance meter, characterized in that, for the purpose of measuring under conditions close to real, the torque meter is made in the form of a fixed air turbine mounted on a frame coaxially with the drive shaft and fastened to it, and mounted on the turbine casing of the sensors of air pressure and temperature at the entrance to the turbine and the rotational speed sensor of the turbine shaft. (L C figure 1

Description

The invention relates to a construction design and can be used to measure the moment of resistance to the rotation of bearings and cuts.

The aim of the invention is to measure under conditions close to real.

FIG. 1 shows a diagram of a device for measuring the moment of resistance to rotation of bearings; in FIG, calibration charts.

The device comprises a frame 1, a shaft 2 mounted on it for installation of the technological bearing 3 and the measured bearing 4, mechanisms 5 and 6 mounted on the base 1 for axial and radial loading of the bearing 4 mounted on the frame 1 air turbine 7 with a shaft 8 located coaxially with the shaft 2 and fastened to it by means of a coupling 9, an air pressure sensor 10, a temperature sensor 11 and a shaft 8 rotation frequency sensor 12 mounted on the turbine housing.

The device works in the following way.

Pre-remove the clutch 9 and disconnect the shaft 2 from the shaft 8. Connect the boot device to the shaft 8, such as a hydraulic brake, and remove the calibration characteristics of the turbine 7 as

ffi

cr

8X

 f

BX V-M K,

- torque on the shaft

de

p turbines;

- air inlet pressure

8X to turbine measured by sensor 10;

- air temperature on

8X turbine inlet, measured by sensor 11;

P - static pressure on

turbine exit measured by a barometer in the room where measurements are taken;

n - shaft rotation frequency

turbines measured by sensor 12.

Calibration characteristics are presented in the form of graphs. Then the loading device is disconnected and with the help of 9 the shafts 8 and 2 are connected. The measured bearing 4 is removed from the shaft 2, and the mechanisms 5 and 6 are reset. The turbine 7 is turned on and gas-dynamic parameters are measured at fixed frequencies of rotation of the shaft 8 using sensors 10-12. air pressure and temperature and rotation frequency; and using calibration charts, the measured torque determines the resistance moment of rotation without measured bearing 4 - M p.

A measuring bearing 4 is mounted on the shaft 2, the turbine 7 is turned on, the bearing 4 is loaded by means of mechanisms 5 and 6, and a predetermined amount of cooling fluid is pumped through the bearing 4

This is measured using sensors 1012 pressure and air temperature and frequency of rotation. Using the calibration graphs, using the measured parameters at the selected rotation frequency, the total moment of resistance to rotation (M) is determined,

The difference between the obtained values of the moments of resistance to rotation at a given rotational frequency and given loads and pumpings is equal to the moment of resistance to rotation of the measured bearing.

  Var.

Claims (1)

DEVICE FOR MEASURING THE ROTATION RESISTANCE OF BEARINGS, containing a bed, a shaft mounted on it for mounting bearings, axial and radial loading mechanisms of the test bearing, a technological bearing mounted on the shaft and a measuring instrument of rotation resistance, characterized in that, for the purpose of measuring under conditions to real ones, the moment meter is made in the form of an air turbine fixed to the frame with a shaft located coaxially with the drive shaft and fastened with it, * and fixed sensors on the turbine casing of the air pressure and temperature sensors at the inlet of the turbine and the turbine shaft speed sensor. FIG. 1