SU454479A1 - Translational speed meter - Google Patents

Description

The invention relates to the measurement of motion parameters.

The known devices comprise a magnetically conducting case, a movable rod connected to the object under study, a measuring coil fixed to the case, to the terminals of which a recording device is connected, and a movable magnetizing coil.

The purpose of the invention is to simplify the known device and protect it from external magnetic fields.

For this, the magnetizing coil, enclosed in a tubular casing of a diamagnetic, is equipped with a ferromagnetic core, at the ends of which there are diamagnetic washers attached.

The drawing shows the proposed meter, general view, the scheme of connecting it to the power source ii recording equipment.

A solenoid (measuring) coil 1 is placed in a cylindrical shell 2 made of ferromagnetic material. The electromagnet 3 with one of its poles is mounted inside the coil 1 with the possibility of unavailable movement and provided with a rod driver 4 for connection to the moving element. Cylindrical shell

provided with a stop ring 5 and a cover 6, limiting the working stroke of the electromagnet inside the coil. The ends of the electromagnet coil using spring-loaded contact brushes 7 and 8, sliding along the conductive busbars 9 and 10, are connected by wires 11 and 12 to a direct current source 13 through a warm-proof meter 14. The conductive wires are fixed on: The rod 15 is fixed in the curler 6. At the end of the rod 14, a hole is made in which the pin 16 is inserted into the groove 17 located in the core 18 of the electromagnet. The pin and the groove serve to exclude the mutual rotation of the electromagnet 3 with the brushes 7 and 8 relative to the conductive women 9 and 10. The terminals 19 and 20 of the solenoid coil are connected to the device 21 registering e. d. induction using wires 22 and 23.

The coil of the electromagnet is placed in the tube 24 of the diamagnetic, and the ends of the core 18 are fixed diamagnetic washers 25 and 26.

The device works as follows.

Depending on the expected range of measured speeds, the corresponding voltage is established at the terminals of the electromagnet, creating the necessary level of magnetic field strength.

The meter body is fixed on the fixed element, and the rod 4 is connected to the movable element of the device under investigation. When the electromagnet moves, the lines of force of the magnetic field created by it will cross the turns of the solenoid coil, exciting the electric field in them. d. induction, the magnitude of which will be proportional to the speed of movement of the electromagnet. Due to the presence of washers and tubes from a diamagnetic on an electromagnet, the magnetic lines of force will be concentrated in planes perpendicular to the axis of the electromagnet at its ends. Passing through the turns of the solenoid coil and through the air gap, the magnetic lines of force close in the tubular body of the solenoid coil. This design provides a concentrated effect of the magnetic field of the electromagnet on a certain number of turns of the solenoid coil.

Subject invention

A translational velocity meter containing a magnetic core, a body, a movable rod connected to the object under study, a measuring coil fixed to the body, to the terminals of which a recording device is connected, and a movable magnetizing coil, characterized in that, in order to clear the device at the same time wired from external fields, magnetizing coil,

enclosed in a tubular shell of a diamagnetic, equipped with a ferromagnetic core, on the ends of which there are diamagnetic washers.

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