SU1651165A1 - Disk tribometer - Google Patents

Description

(21) 4718837/28

(22) 07/14/89

(46) 05.23.41. Bul P 19

(71) Tashkent Polytechnic Institute. A.R. Biruni

(72) S.S. Negmatov, A. B. Dzhumabaev, T. A. Almamaev, T. Dzhalalov, T. S. Khalimzhanov and A. F. Lazypov

(53) 620.178.16 (088.8)

(56) USSR Copyright Certificate ff 15168976, cl. G 01 N 19/02, 1987.

(54) DKSKOVCHY TRIBOMKTR

(57) The invention relates to the testing of materials by friction and can be used to determine the tribo-technical characteristics of materials

in particular raw cotton. The invention is to improve the accuracy of determining the coefficient of friction of raw cotton by simulating its movement in the working bodies of cotton processing machines. R box 11 places the raw cotton test subject, is loaded by the piston 13 and weights 14, the carrier 8 rotates. The roller 9 moves along the inner surface of the ring 11, and the box 12 performs a complex movement simulating the movement of raw cotton in the working machines of cotton machines . The force of friction of cotton on disk 4 is measured using a strainer 5 and a recorder, which determines the coefficient of friction. 2 Il.

With js

(L

The invention relates to the testing of materials by friction and can be used to determine the tribotechnical characteristics of materials, in particular raw cotton.

The aim of the invention is to improve the accuracy of determining the coefficient of friction of raw cotton by simulating its movement in the working bodies of cotton processing machines.

The ka of FIG. 1 shows the kinematic scheme of the proposed tribometer; in fig. - movement pattern of a double-track roller on a ring.

The tribometer contains a frame I and a shaft 2 in the supports 3 installed in the frame 1. A disk 4 (counterblade) is fixed on the shaft 2, and a strainer 5 is fixed to the opposite end of the shaft 2, which contacts the fixed stop 6, axially with the shaft 2 on the supports 7 is mounted on the carrier 8, at the end of which a roller 9 in the form of a fork is mounted, and on its teeth x are rollers 10 designed to interact with the inner surface of the ring 11 having an inner surface with alternating protrusions with smooth transitions between it . A box 12 without a bottom is fixed to the fork leg to accommodate the test material, the load on which is created by the piston 13 with weights &.

The rotation of the carrier is transmitted from the electric current of the DC 15.

ze

SP

O5 SP

Through transmission by communication.

I 6 g flexible

The tribometer is equipped with the necessary instrumentation equipment (not shown in Fig.).

Tribometer works as follows.

The box 17 is filled with the necessary amount of raw cotton, the piston 13 and the load 14 are put on top of the cotton to create a load normal to the surface of the disk 4. Include the electric motor 15 for drive vraš, drove I drove in the end of which there is a roller (with box 12, Rollers of roller 9 are cat (n inside the ring I 1, and box 12 with raw cotton with horse)

the tact of the latter with the disk 4 repeats movements relative to the axis of the disk. As a result, the test sample of raw cotton when rubbing against disk 4 performs the same movements as when rubbing against the surface of the working bodies of cotton processing machines. In this case, the strain bar 5, mounted on the shaft 2 of the disk 4, is deformed in proportion to the friction force, and the signal of the strain gauges, according to which the friction coefficient of raw cotton is judged, is recorded by the apparatus.

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five

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Claims (1)

Invention Formula A disk tribometer containing a frame, LL mounted in supports on the frame, a disk fixed on the feces, a carrier mounted in other supports coaxially with the shaft, a roller mounted rotatably on the end of the carrier, a box without a bottom for accommodating the test material intended for interaction with the disk, a loading device, a friction force measuring instrument and a recorder associated with it, characterized in that, in order to improve the accuracy of determining the coefficient of friction of raw cotton by simulating its sweeps in the working bodies of cotton processing machines, it is equipped with a ring mounted on the frame, on the inner surface of which alternating protrusions and depressions are made with smooth transitions between them, the roller is made in the form of a fork and fixed to rotate on its teeth x rollers designed to interact with the inner surface of the ring, the box is fixed on the fork's spoon, and the axis of rotation of the fork is located between the tooth - the MCH and the leg " 70 YU Phage. 2