SU1615549A1 - Support for connecting shaft of measuring pickup with shaft of working mechanism under test - Google Patents

Abstract

The invention relates to precision mechanics, in particular to supports for connecting the shaft of the measuring sensor to the shaft of the working mechanism under test. The purpose of the invention is to reduce the mechanical loads on the joined elements. In order to achieve the goal, the instrument platform 5 for fastening the sensor 6 and the intermediate platform 5 are made in the form of rectangular box-shaped different-sized frames, the smaller of which is mounted inside the larger one, and the latter is fixed in the groove of the base. This plate dampers 2 and 4, through the first of which the intermediate platform 3 is attached to the base, and through the second, orthogonal mounted first, the instrument platform 5 is attached to the intermediate platform 3, made of symmetrical pairs of C-shaped plates 7. 3 Il.

Description

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I The invention relates to a technique of precision instruments, namely, supports for soy; The shaft of the measuring sensor shaft with the shaft of the working mechanism under test.

The purpose of the invention is to reduce the mechanical loads on the connected elements and to eliminate the errors introduced by the support by reducing the influence of the angular and radial misalignment of the shafts of the measuring sensor and the working mechanism under test.

FIG. 1 shows the support, section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - diagrams of the forces acting on the support: at the radial (a) and axial (b) forces, at the radial (c) and axial (d) moments.

The device comprises a base made with elements of connection with the body of the tested working mechanism and with a groove, between parallel walls 1 of which an intermediate platform 3 is fixed on shock absorbers 2, to which shock absorbers 2 installed orthogonal to shock absorbers 2 are attached for fastening measuring sensor 6. Platforms 3 and 5 are made in the form of rectangular box-shaped frames of different ramser. A smaller platform 5 is mounted in the cavity of the frame 3 and oriented similarly to the latter. Each of the shock absorbers 2 and 4 is made in the form of a pair of C-shaped curved plates 7, the bending ribs 8 of which are oriented perpendicular to the axis of rotation of the shaft 9 of the sensor 6 fixed in the device. : When the shaft of the working mechanism and shaft 6 of the rotor I of sensor 6 rigidly connected with it rotates, the presence of radial misalignment of the shaft I and their radial beating cause the support to be loaded with a force directed transversely to the axis of rotation of the shaft 9 (Fig. Pro), increased by dampers and 4 in this direction, the load on the bearings of the sensor b increases slightly. However, the radial displacement of the axis of rotation of sensor 6 does not cause the stator to rotate around the axis of rotation of the rotor due to the symmetrical design of the shock absorbers 2 and 4, as well as due to the small compliance of these shock absorbers in the circumferential direction. This makes it possible to eliminate the error introduced by the support, and thereby increase the accuracy of measurement of the coal position (or speed) of the shaft of the tested working mechanism.

Longitudinal axial runout causes

the bias of the elastic elements of the shock absorbers 2 and 4 in the direction of their sufficiently high compliance, which helps to limit the longitudinal forces on the bearings of the connected elements (Fig. 36).

The presence of angular misalignment leads to the appearance of a radial moment (Fig. Sv), at which one of the elastic elements 7 is compressed, and the other is stretched,

the load on the bearings of the elements being joined is reduced at the most.

For the moments acting around the axis of rotation of the shaft 9 of the sensor 6, the high rigidity of the pair of elastic elements 7 does not dampen the transmission of torque from the shaft 9 of the sensor 6 from its stator (Fig. 3g).

Claims (1)

Claims of support for connecting the shaft of the measuring sensor with the shaft of the tested working mechanism, comprising a base made with elements of connection with the body of the working mechanism, an instrument platform for fixing the sensor, an intermediate platform and lamellar spring shock absorbers, through one of which the intermediate platform is attached to the base, and through the others, mounted first orthogonally, the instrument platform is attached to an intermediate one, characterized in that, in order to reduce the mechanical loads on the connected elements and eliminate the errors introduced by the support, due to reducing the influence of the angular and radial misalignment of the shafts of the measuring sensor and the test working mechanism; the platform is made in the form of rectangular box-shaped different-sized frames, less of which are mounted in the inner cavity of a larger one and oriented similarly to the latter, and the larger one is mounted between the parallel walls of a groove made in the base, and the plates of the shock absorbers are C-shaped curved and assembled into symmetric pairs. but pg Fig.Z