SU826204A1 - Stand for monitoring mechanism technical condition - Google Patents

Description

(54) STAND FOR CONTROL OF TECHNICAL CONDITION

MECHANISMS

The invention relates to the technical diagnostics of mechanisms and can be used to monitor the technical condition of the gearboxes of tractors and gearboxes with movable splined joints.

A stand for testing gearboxes is known, containing a drive, a loading device and measuring means 1 mounted on a frame and interconnected.

However, this stand does not allow obtaining complete information on the technical state of the mechanism being tested, since the latter is tested in a static state.

The closest to the proposed offer is a stand for monitoring the technical state of the mechanisms, containing the drives mounted on the frame and interconnected. Loading device and measuring device 2.

The disadvantage of such a device is that it does not allow the size of the gap in the slit joints of the mechanism under test to be controlled, since

Diagnosis is performed with a uniform rotation of the drive shaft.

The purpose of the invention is to increase the accuracy of control of the technical condition of the diagnosed mechanism.

This goal is achieved by the fact that the test bench for controlling the technical state of the mechanisms is equipped with an instantaneous loading device, for example, an electromagnetic powder brake, which is installed between the drive and the diagnosed mechanism.

The drawing shows a block diagram of the mechanical and electrical parts of the stand.

The stand for controlling the technical condition of the mechanisms contains a frame 1, on which an actuator 3 is installed on the vibration insulating elements 2, a diagnosed mechanism 4, for example a gearbox, and a loading device 5. An actuator is installed on the vibration insulating elements 2 between the drive 3 and the diagnosed mechanism 4 6

Claims (2)

All units of the stand are interconnected by elastic vibration-insulating sleeves 7. The measuring circuit of the stand consists of a vibration sensor 8 installed on the diagnosed mechanism 4, preamplifier 9, filters 10 and an oscilloscope 11. The technical condition of the mechanism 4 on the proposed stand is checked at a uniform rotation frequency drive shaft 3. The loads required for this are simulated using a loadable device 5. The clearance of the gap in the schlitsevnyh connections of the diagnosed mechanism is made after Erki his general technical state as follows. At a certain frequency of rotation of the drive shaft, the drive 3 is disconnected and the loading device bis, using the instantaneous loading device 6, sharply loads the drive shaft. There is a sharp deceleration of the drive shaft, and in the slit joint due to the action of inertial forces - the choice of the gap and there is a blow. The impact energy in the form of vibroacoustic signals is picked up by vibration sensor 8. After amplification in preamplifier 9 and filtering in filters 10, signals are recorded using an oscilloscope 11. The proposed stand allows for more accurate verification of both the technical condition of the whole diagnosed mechanism and the quality of performance. its movable shlitsevyh compounds. Claims of the invention A stand for monitoring the technical condition of mechanisms, comprising a drive, a loading device and measuring devices mounted on a frame and interconnected, characterized in that, in order to increase the accuracy of monitoring the technical condition of the diagnosed mechanism, it is equipped with an instant loading device installed between drive c diagnosed mechanism. Sources of information taken into account in the examination 1. USSR author's certificate number 3798A6, cl. G 01 M 13/02, 1970. 2. USSR author's certificate number 398854, cl. G 01 M 13/02, 1970 (prototype).