SU1620880A1 - Apparatus for determining wear-out of teeth of gear transmissions - Google Patents

Abstract

The invention relates to mechanical engineering, namely to means and methods for controlling gears. The purpose of the invention is to expand technological capabilities by providing the ability to control reverse gears. A transducer with receiving and compensating coils is installed at the end of the wheel, and the gaps between the latter are measured differentially, the thickness of the tooth of the disc wheel is made larger than that of the wheel, on the end of which the bottom is fixed. 1 il.

Description

The invention relates to mechanical engineering, in particular to methods and means of controlling gears.

The purpose of the invention is the expansion of technological capabilities due to the possibility of determining wear during reverse.

The drawing shows a structural diagram of the device.

The device contains conjugate gears 1 and 2. At the end of one of them, for example wheel 1, is mounted with the possibility of rotation around the axis of this wheel, the gear disk 3, spring-loaded in the circumferential direction relative to this wheel 1 by spring 4. At the end of wheel 1 is fixed an inductive transducer (sensor) 5, interacting with the base surfaces 6 and 7 of the through groove 8, made in the disk 3.

The tooth 9 of the disk 3 is made in the face section of a larger size than the tooth 10 of the wheel 1. Moreover, the size of the teeth 9 of the disk 3 is selected taking into account the nominal size of the teeth 10 of the wheel 1 on any current

the diameter and size of the side clearance in engagement of the mating wheels 1 and 2 of the diagnosed transmission by the condition of no jamming

5d () -Tjn,

where 5D and B - face size of the teeth, respectively, of the toothed disk and the wheel on the same diameter;

jn side clearance in engagement of diagnosed gears;

TJR - lateral clearance tolerance.

The spring 4 can be made of spring wire, for example, of circular cross section, fixed with one common end on the wheel hub 1, the other on the gear disk 3 and placed in a radial hole of a larger diameter than at the ends of the fastener. This makes it possible to deform it during operation of the device.

The springing force of the disk 3 relative to the wheel 1 should be less than the circumferential force transmitted by the wheels 1 and 2. This is due to the need to eliminate wear of the side surfaces of the teeth.

Yo

Och N0 O 00 00

9 of a disk 3 that performs the function of a tracking element in a common (with converter 5) diagnostic system (not shown).

The coupling of the disk 3 with the wheel hub 1 can be performed on a sliding fit or on the rolling elements, taking into account the possibility of its repeated use for diagnostics and other similar gears.

The device works as follows.

A measuring system (not shown) with a contactless inductive transducer 5 included in it, the windings of the receiving and compensating coils of which are connected in a differential circuit, balanced to zero.

The diagnosed gears 1 and 2, and with them the gear disc 3, are brought into engagement and loaded with the transmitted torque. As a result, the gear disk 3 is displaced from its initial position, since the size of its teeth 9 in cross section is slightly larger than the cross section of the teeth 10 of wheel 1. Under the action of the spring 4, the disk 3 is in tight engagement with the conjugate wheel 2 of the diagnosed transmission.

The angular displacement of the disk 3 causes a decrease in one of the gap 5i measured by the transducer 5 by an offset value and an increase in the gap yes by the same value. As a result, the measuring system

An imbalance occurs in the system, the value of which is recorded by a recording device (not shown).

During operation, the teeth of the wheels 1 and 2 in the areas of their force interaction wear out. At the same time, in the zone of contact with the disk 3, the teeth of the wheel 2 remain practically intact. Consequently, the wear causes an additional angular displacement of the disk 3 from the initial position. The change in the measured gaps 5i and dg is recorded by a recording device, according to which it is judged on the condition, working capacity and residual resource of the diagnosed transmission.

When reversing the transmission movement, the principle of operation of the device is preserved, however, the gap 5g will already decrease, and the gap e will increase -

Claims (1)

Invention Formula A device for detecting wear of gear teeth, comprising mating gears mounted on the end of one of the wheels, can be rotated around an axis and sprung in a circumferential direction relative to the wheel of a gear disk and its displacement sensor, characterized in that the expense of determining wear when reversing, the thickness of the teeth of the toothed disk is larger than the tooth of the wheel, on the end of which the disk is mounted. eight