SU932559A1 - Device for indication of rotational speed of carrier-driving mechanism components - Google Patents

Description

(S) DEVICE FOR INDICATING THE ROTATION RATE OF THE ELEMENTS OF THE MECHANISM OF MOVEMENT OF THE MEDIA

I

The invention relates to instrumentation, namely to a device with which it is possible to indicate and measure the angular velocity Bpau g of the elements of the mechanism for moving the carrier.

A device for indicating and measuring the non-uniformity of the angular velocity of rotation of a shaft of any mechanism, but necessarily having high revolutions, made with a flywheel by means of springs with a driving shaft is known. In the same device there is an optical control system with reflective mirrors and an autocollimator ll.

Such a device allows one to make measurements with sufficient accuracy, but only if the radial raster used is made with increased accuracy. Otherwise, there is an accumulation of a mistake. It is difficult to make a raster even with the success of modern technology.

especially with high accuracy requirements.

Closest to the present invention is a device for indicating the speed of rotation of the elements of the carrier movement mechanism, comprising a rotating shaft, along which the edges are located along an equal distance, and a photo-optical control system with reflective mirrors

10 one of which is mounted on the end of the rotating shaft and the other is mounted outside this shaft 2.

Claims (2)

This device is structurally more simple than the previous one, but it does not have sufficient sensitivity when conducting indications and measurements in the region of the lower frequencies commensurate with the frequency of the lower portion of the audio range. In addition, in the same range and the accuracy of the testimony is not large enough and high. The purpose of the invention is to increase the sensitivity of the device for indicating the speed of rotation of the elements and to reduce the error of their measurement and indication in the frequency range commensurate with the lower frequencies of the audio range. This goal is achieved due to the fact that the device for indicating the speed of rotation of the elements of the carrier moving mechanism, containing a rotating shaft, along which the ribs are formed at equal distance, and a photo-optical control system with reflective mirrors, one of which is installed at the end of the rotating , and the other is installed outside this shaft, provided with a cylindrical magnet, a cylinder mounted inside it, made with holes at the ends with stone bearings fixed in them, into bridges x the ends of the rotating shaft, placed in a ferromagnetic suspension, are installed, the fixed mirror is fixed on the cylinder, and the movable mirror is made with a counterweight. Figure 1 shows the proposed, general view, longitudinal section; in fig. 2 is a transverse section in the area of the mirrors; in fig. 3 - time cut AA in FIG. 1. A rotating shaft 1 is placed in a ferromagnetic suspension 2 located in a cylinder 3 which is located in a cylindrical magnet / f. A shaft mounted in stone bearings 5 is fastened to a mirror 6 having a counterweight 7, and the cylinder 3 is fixed to a mirror 9 mounted on the extension 10 of the shaft 1 through the bracket 8. With part 11 of any exposed display and control element can be rigidly either the section 12 of the cylinder 3 is connected, or the extension 13 of the shaft 1 (it all depends on whether the section 12 or the extension 13 is rotating at a higher speed). The operation of the device can be carried out in two modes, each of which differs from the other only in that either shaft 1 or cylinder 3 rotates. A third variant may occur, when both of them rotate, but then some of them lags behind the other. . For example, if the element 11, the rotation of which the contact 4) is molded, is bonded to the cylinder 3, then this particular cylinder will rotate. The mirror 9 also rotates simultaneously with the cylinder (at least with greater speed than mirror 6). It is completely understood that uniform rotation of the cylinder results in a constant beam length T between mirrors 9 and 6, as shown by their measuring device or recorder (not shown) on which these rays fall. The presence of a ferromagnetic suspension in the cylinder allows the microparticles of the suspension to be concentrated at the ends of the ribs 15 of the shaft 1 by using a cylindrical magnet k, in which the direction of the force lines from the north to the south pole lies in the same plane in which the corresponding end of the rib 15 lies. These bars 1b act as a damper, which and; Allows display and measurement at low frequencies of rotation of the shaft or cylinder. The possibility of measuring the rotational speed of any elements in the low-frequency region allows us to reduce the range of similar products in production, since the proposed device, in addition to its functions, can perform the functions of other devices. Apparatus of the Invention A device for indicating the speed of rotation of elements of a carrier moving mechanism, comprising a rotating shaft along which generators edges are located at an equal distance, and a photo-optical control system with reflective mirrors, one of which is installed at the end of the rotating shaft , characterized in that, in order to increase its sensitivity and decrease the measurement and indication error in the frequency range, commensurate with the lower frequencies of the audio range, it is abzheno .tsilindricheskim magnet fitted inside the cylinder formed apertured at trrtsah with fixed therein Kamneva bearings in which the ends us5 tanovleny vraschakndegos shaft placed in a ferromagnetic suspension, wherein the fixed mirror is fixed on the cylinder, and holds the movable counterweight. Information sources. taken into account in the examination 9 8 b If h / / / / MS / .. U. ... / I g p Nl l VXKXNI I 32559 1, USSR Author's Certificate No. 518731, cl. G 01 P 3/36, 197. 2.-Avtarskoe certificate of the USSR 5 №, cl. 6 11 In 15L6, 1968 I (prototype). Fig 2 A-l