SU1377664A1 - Apparatus for testing material for wear - Google Patents

Abstract

The invention relates to a testing technique, namely, devices for studying the wear resistance of coatings. The purpose of the invention is to approximate the test conditions of materials to the conditions of moving bulk goods on reinforced coatings by implementing complex reciprocating motion with rotation inherent in the contact of bulk materials with coatings. The reciprocating movement (along the arrow П В) to the glass 13 with the sample 24 located in it and the loading unit, for example, the cargo mock-up 26, is driven. The rotational movement of the cup 13 is transmitted by means of a gear wheel 10 connected to the cup 13 by means of a spline connection and spring-loaded pins 27, made in the form of self-lifting with the help of springs 28, rods 29 installed in the guides of the body I. During reciprocating motion of the cup 13 at the moment when the zone of action of the pins 27 passes, the crown of the gear wheel 10 interacts with one of the pins 27 (the other pin rises at this time into the housing 1), forming an instantaneous center of rotation at the point of contact and rotating the stack 13 with a sample 24 at a certain angle along arrow K. Thus, the glass 13 is rotated relative to the rectilinear motion during each cycle of the testing process. I zp f-ly, 4 nl. 6-6 (/) 00 about a 4

Description

The invention relates to a testing technique, namely, devices for studying the wear resistance of coatings.

The aim of the invention is to approximate the test conditions of materials to the conditions of movement of cargo on decking with reinforcing coatings through the implementation of complex reciprocating motion with rotation, inherent in the contact of bulk cargo with coating.

Figure 1 shows the device, a general view; figure 2 - section aa in fig}; on fig.Z - section bb in figure 2; figure 4 - section BB in figure 1.

The device consists of a housing 1 (figure 1), a drive 2, made, for example, in the form of a crank-schatunnogo mechanism, also containing the electric motor 3 and the gearbox 4. The housing 1, the electric motor 3 and the gearbox 4 are rigidly installed on the base 5. In the housing 1 in the guides 6 and 7 (Fig. 2), the gear wheel Yu is mounted with bearings 8 and 9, the outer of which is a gear 11.

Inside the gear wheel 10, a specimen holder, made in the form of a cup 13, is installed by means of a pgpitz connection 12. Outside the cup 13, a gear ring S6 is placed over the gear wheel 10 through the bearing 9 and with the help of the needle 14 and the bearing 15 bearings. the rod 17 (FIG. 4) is connected to the actuator 2. The rod 17 is located in the Yugdih direction 1-8 in the housing 1. The pan 13 for ensuring stability at the top of the hub 19, the bearings 20 and the latches 21 is fixed in the housing 1. In addition , the cup 13 is equipped with sockets 22 and 23. In the socket 22 is installed th sample-nmmitator 24 coated 25, and the socket 23 - the stress in the form of cargo node layout 26. The rotation mechanism of the glass 13 is embodied in the form of a gear wheel 10 with external teeth, installed coaxially to the glass 13 and connected with it by means of a spline connection, and spring-loaded pins 27, installed with the possibility of interaction of one of them with a gear crown P. Pins 27 each time (see fig. 3) are made in the form of self-tightening using

25

with

YU

five

35 40 45 jQ j

springs 28 of the rod 29 installed in the sockets 30 of the housing 1.

The device works as follows.

Before testing, the cargo mock-up 26 and the cup 13 are removed from the device. Initially, in the end gap 31 between the gear wheel 10 and the housing 1, a sample 32 is installed without coatings (usually rectangular) and secured with screw clips (not shown). Then, sample 24 is inserted into slot 22. Sample 24 together with cup 13 (using a hook and eyebolt 33; welded to the specimen) is installed in housing 1 with a gear wheel 10 by aligning the spline connection 11. Then install a cargo mock-up 26 of the required mass. Drive 2 is turned on and coating tests are carried out. During the test, sample 24 is reciprocated in arrow B and rotational in arrow K. Rotary motion is reported when the teeth of the ring gear I1 are hooked onto pin 27 (for example, left, FIG. 3). During the reverse movement, the pin 27 is buried in the socket 30, and the right pin is working.

Claims (1)

1. Device for testing the wear of materials. The containing drive, the case, the sample holder and the mechanism of its rotation, the loading unit and the contra-sample, located in this case, in order to bring the test conditions to the conditions of movement of bulk goods on the reinforced coatings associated with the drive and installed with the possibility of reciprocating movement of the glass with a nest for mounting the sample, and the mechanism of its rotation is made in the form of a gear wheel with external teeth mounted coaxially with the glass and Connected to it by means of a spline joint, and spring-loaded pins installed with the ability of each of them to interact with the ring gear. . 2, The apparatus of claim 15, which is, in order to provide vibration protection of the coating. it is provided with guides, respectively, of glass and spring-loaded pins. 20 Phage.2 - 7  V five in-in Fi. If