CN2569129Y

CN2569129Y - Friction performance tester for wet friction material

Info

Publication number: CN2569129Y
Application number: CN 02262227
Authority: CN
Inventors: 刘学耕
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-19
Filing date: 2002-09-19
Publication date: 2003-08-27
Anticipated expiration: 2012-09-19

Abstract

The utility model relates to a friction performance tester for wet friction materials. In the prior art, the temperature control of the friction performance tester of MM1000 type uses a thermocouple matched with a resistance strain gauge and a function recorder to implement survey control, which has the disadvantages of many artificial factors of data processing, slow and miscellaneous procedures of integration testing and hard operation. The utility model comprises a main machine seat, a main rotating assembly, a sample disc, a fixture disc and an arrangement inertia disc, and is characterized in that a pressure sensor is arranged on an air cylinder of the tester, a weighting sensor is arranged on a regression disc, a temperature sensor 1 is arranged on the fixture disc 9, and the output signals of the sensors are connected with a computer interface through an A/D board by electronic processing. Thus, the utility model eliminates the interference of artificial factors, and improves the precision and the speed of testing.

Description

The Wet-type friction material frictional property test machine

One, technical field:

The utility model relates to a kind of frictional behaviour pick-up unit, is a kind of Wet-type friction material frictional property test machine specifically.

Two, technical background:

In the prior art, MM1000 type frictional property test machine is more popular type, its temperature control uses thermopair adapted electric wire strain gauge and function registering instrument to measure control, and moment of friction also is to adopt foil gauge to measure moment of friction, uses the trace-point method curve plotting, looks for corresponding point from curve again, determine torque value, its data processing human factor is many, and the integrated testability process is slowly numerous and diverse, and is not easy to operate.

Three, utility model content:

The purpose of this utility model provides a kind of easy to use, measures Wet-type friction material frictional property test machine accurately.

For achieving the above object, the technical solution adopted in the utility model is:

The Wet-type friction material frictional property test machine, comprise main engine bed, main assembling, platter, jig dish and the configuration inertia dish of rotating, its special character is: on the cylinder 8 of described testing machine pressure transducer 2 is set, LOAD CELLS 3 is set on recurrence dish 10.

On the jig dish 9 of above-mentioned testing machine temperature sensor 1 is set.

On the cylinder 8 of above-mentioned testing machine two-bit triplet solenoid valve 4 is set, device electromagnetic clutch 5 on the main rotary shaft.

Above-mentioned pressure transducer 2 employing accuracy classes are 0.05 pressure GKCY15 sensor.

Above-mentioned LOAD CELLS 3 adopts the GKCY-2A LOAD CELLS.

The motor of above-mentioned testing machine adopts asynchronous motor 12, and speed governing frequency converter 13 is set on asynchronous motor 12.

Above-mentioned pressure transducer 2 is connected with computer interface through the A/D plate by electronic processing with the output signal of LOAD CELLS 3.

Relative and the prior art of the utility model, its advantage is as follows:

1, the utility model employing accuracy class is 0.05 pressure GKCY15 sensor, thereby the accurate setting pressure value of energy, guarantees to measure accurately.

2, the utility model adopts the GKCY-2A LOAD CELLS, thereby can accurately calculate test value.

3, the utility model adopts Computer Processing, control technology, thereby has got rid of the interference of human factor, has improved the precision and the speed that detect.

Four, description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 be Fig. 1 along A-A to cut-open view.

Five, embodiment:

Referring to Fig. 1, the Wet-type friction material frictional property test machine, comprise main engine bed, main assembling, platter, jig dish and the configuration inertia dish of rotating, on the cylinder 8 of described testing machine pressure transducer 2 is set, pressure transducer 2 employing accuracy classes are 0.05 pressure GKCY15 sensor, be used for measuring the friction material in the frictional disk and the pressure of antithesis dish actual contact face, change the pressure transducer output signal into the 0-5 volt, selected satisfactory interface board is connected with computing machine, determine the condition with computer dialog, for computer software provides signal.

On the jig dish 9 of testing machine temperature sensor 1 is set, the actual temperature when obtaining frictional disk work by it is implemented under the isothermy frictional behaviour value of same period.

The motor of testing machine adopts asynchronous motor 12, speed governing frequency converter 13 is set on asynchronous motor 12, thereby can obtains different rotating speeds, satisfy the technological requirement of national standard, thereby the direct current generator that has replaced high value, it is gone back available computers and directly controls by the D/A plate.

Referring to Fig. 2, on the recurrence dish 10 of testing machine LOAD CELLS 3 is set, LOAD CELLS 3 adopts the GKCY-2A LOAD CELLS, and its direction of pull is subjected to force direction opposite with frictional disk, when pressure acts on the frictional disk when producing friction force, produce moment of friction by recurrence dish radius.

On the cylinder 8 of testing machine two-bit triplet solenoid valve 4 is set, device electromagnetic clutch 5 on the main rotary shaft, two-bit triplet solenoid valve 4 and electromagnetic clutch 5 co-ordinations, high by computing machine output, low electricity is signal frequently, high electricity is opened frequently, low electricity is closed frequently, realize the test of finishing instant value is controlled in the exchange of two-bit triplet solenoid valve 4 and electromagnetic clutch 5 by logical circuit, under the configuration inertia of regulation, pass to corresponding rotating speeds by main motor, be stored on main shaft and the inertia dish, electromagnetic clutch 5 is opened, promote piston with nominal pressure, frictional disk and dynamometry dish are compressed, the moment of torsion that produces to consume the main shaft energy, adopt above principle by computer technology, the pressure that this is interior in a flash together, the change in torque situation is noted and is calculated and be depicted as pressure, the measured value curve of moment of torsion has so just obtained the pressure of any moment, the change in torque eigenwert is to reflect the frictional behaviour of this friction material.

Its concrete course of work is as follows: after energized, main motor is started by computer-controlled frequency-adjustable speed-adjustable, after reaching the rotating speed of appointment, keep the regular hour, be generally 3-5 second, store certain energy for main shaft and inertia dish, open electromagnetic clutch 5, connect two-bit triplet solenoid valve 4, input pressure gas, frictional disk contacts with the antithesis dish, consumes the main shaft energy, produce moment of torsion, just obtain pressure, the instant value of moment of torsion according to the given formula of 13826 standards, calculates friction co-efficient value simultaneously, obtain coefficient of static friction with the moment of torsion maximal value, with all the period of time the moment of torsion mean value calculation go out kinetic friction coefficient.

Claims

1, Wet-type friction material frictional property test machine, comprise main engine bed, main assembling, platter, jig dish and the configuration inertia dish of rotating, it is characterized in that: pressure transducer (2) is set on the cylinder of described testing machine (8), LOAD CELLS (3) is set on recurrence dish (10).

2, Wet-type friction material frictional property test machine according to claim 1 is characterized in that: on the jig dish (9) of described testing machine temperature sensor (1) is set.

3, Wet-type friction material frictional property test machine according to claim 1 and 2 is characterized in that: two-bit triplet solenoid valve (4) is set on the cylinder of described testing machine (8), installs electromagnetic clutch (5) on the main rotary shaft.

4, Wet-type friction material frictional property test machine according to claim 3 is characterized in that: described pressure transducer (2) employing accuracy class is 0.05 pressure GKCY15 sensor.

5, Wet-type friction material frictional property test machine according to claim 4 is characterized in that: described LOAD CELLS (3) adopts the GKCY-2A LOAD CELLS.

6, Wet-type friction material frictional property test machine according to claim 5 is characterized in that: the motor of described testing machine adopts asynchronous motor (12), and speed governing frequency converter (13) is set on asynchronous motor (12).

7, Wet-type friction material frictional property test machine according to claim 6 is characterized in that: described pressure transducer (2) is connected with computer interface through the A/D plate by electronic processing with the output signal of LOAD CELLS (3).