SU375473A1 - ANGULAR TRANSFER CONVERTER TO ELECTRIC SIGNAL - Google Patents

Description

one

The invention relates to instrumentation technology and can be used in devices that carry out a functional conversion of spatial movement into closed or open state of contacts that control an electrical circuit and, in particular, to measure the limiting angular displacements of the branches of the traction systems for lifting and load transport. works on installation and construction.

The known transducer of angular displacements into an electrical signal contains a spherical joint, a contact pair that interacts with the female and the inner parts of the hinge, and an electrical circuit that controls the contact pair.

The disadvantage of the transducer is that the contact pair of the electrical circuit is closed (opened) from the action of the two shoulders by means of a spring-loaded pin connected to the inside of the joint.

The presence of intermediate elements in the form of a lever and a spring-loaded rod reduces the reliability of the converter and limits the functionality of its application. In addition, when changing the limits of the angular deviations of the branch of the thrust (load-lifting) system, it is necessary to reconfigure the transducer by regulation

the gap between the rod and the lever, which complicates the maintenance of the device, especially with frequent reconfiguration of it to different measurement limits.

In the proposed converter, these deficiencies are eliminated due to the fact that it is provided with additional contact pairs mounted circumferentially on the female part of the hinge and a magnet. All contact pairs are made in the form of hermetically magnetically controlled contacts, and the magnet is composed of two mutually perpendicular ball segments and is installed on the inside of the hinge.

FIG. 1 and 2 shows the proposed transducer in section; in fig. 3 and 4 - view of the converter from the top without a cover.

FIG. 2 and 4 shows a transducer with a rod rotated 180 ° and deflected.

from the axis of symmetry of the location of the contacts at a certain angle y. The dashed lines in FIG. Figures 2 and 4 show the contours of a sphere connected to a rod, a magnet and centering pins. The dash-dotted lines indicate the positions of the bar with the sphere in FIG. 1 when they are deflected by an angle of ± a and in FIG. 3 - at an angle of ± p.

The converter contains a rod / with sphere 2 (inner part of the hinge), supports 5 and (covering the hinge part), contact pair 5, additional contact pairs 6 and magnet 7.

The supports 3 to 4 are centered between each other by pins 8. In the supports there are through holes I intended to integrate the converter into the measuring system. Contact pairs 5 and 6 are fixed on a nonmetallic holder 10, covering the protruding from the support 3, the tip of the sphere 2, and the contact pairs 6 are fixed concentrically on the holder 10 and oriented along the forming surface of the sphere 2. The contact pair 5 is located on the same generator with two fixed on opposite sides of it, additional contact pairs.

All contact pairs are made in the form of hermetic magnetically controlled contacts, controlled by the external magnetic field of the magnet 7 in the form of mutually perpendicular segments //, 12 and 13 of a hard magnetic material located inside the tip of the sphere 2.

Concentric contact pairs 6 are located around axis 14. To prevent magnetization of the sphere and the supports, support 3 is made of a nonmagnetic material, and segments //, 12, and 13 of magnet 7 are protected by a nonmagnetic screen 15.

The proposed Converter works as follows.

The rotation of the rod around the axis 14 of the concentric arrangement of additional contacts causes the latter to pair-up when they intersect and position segment 11 in the planes of the securing of these contacts.

The deviation of the rod 1 by the angles ± a in the planes for securing additional contacts is accompanied by the return of one of the latter, distant from segment 11, to its initial state and holding in the state of operation of the other of said contacts closer to the segment. Rotation of the rod 1 around the axis 14 at an angle causes alternate operation of additional contacts from the action of the segments / 2 and 13. Thus, the change in the spatial position of the rod within the angles ± a (Y) and angles ± p, the speed and direction of this change are recorded and monitored for the state and sequence of closures and openings of contact pairs 5

and 6. In automatic control mode, these contact pairs are connected to the governing body of the system. The switch of some limits of measuring the angles ± a (v) and ± p to others is made from the console

control system.

Subject invention

The transducer of angular displacements into an electrical signal containing a spherical hinge, a contact pair, interaction. a circuit with an internal and internal parts of the hinge, and an electric circuit controlled by a contact pair, characterized in that, in order to increase the sensitivity and reliability of the transformation, it is provided with additional contact pairs mounted circumferentially on the joint part of the hinge, and a magnet, All contact pairs are made in the form of hermetically magnetically controlled contacts, and the magnet is composed of two mutually perpendicular ball segments and is mounted on the inside of the hinge.

eleven

FIG. 2

eight

Fig.Z

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