SU1624253A1 - Transducer of vibration of mine machines - Google Patents

Abstract

The invention is intended to record the vibrations of the hulls of mining machines. The purpose of the invention is to increase reliability. Before installing the device on the measurement object, the latch 15 is released and transferred to the extreme extended position. Under the action of the spring 13, the lock 14 rises and releases not connected to each other magnets 4, magnetic spacers 11 and non-magnetic projectile 12. At the time of installation, the device is placed on the mountain casing Machines with a contact strip -T-T7TTG and "N and 10" Let us put 11 out of the magnetic material under the action of magnetic forces, attach the device to the body of the mining machine, forming the fastening surfaces that coincide with the Nero body surface properties. Further, the latch 15 is retracted and fixed in the base 3. Under the action of the latch 15, the lock 14 compresses the spring 13 and with its working surface squeezes the spacers 11 made of magnetic material, non-magnetic spacers 12 and magnets 4 The oscillations of the casing of the mining machine are transmitted through the spacer 11 made of magnetic material and the contact strip 10 to the magnets 4, and then through the base 3 to the piezoelectric vibration transducer 1 An electrical signal from the piezoelectric vibration transducer, proportional to the vibration acceleration, is fed to the circuit board preamplifier and with a data cable 2 is output to the recording device. Cable entry 7 and seal 9 serve to seal the device. The pressure of the cover 6 to the base 3 is regulated by a threaded element 8. 2 silt, Y Os Os GO ate Sl

Description

The invention relates to the means of converting the vibrations of the hulls of mining machines into an electrical signal and can be used in devices for diagnosing transmissions of mining equipment.

The purpose of the invention is to increase the reliability of the converter,

Figure 1 shows the proposed Converter; Fig. 2 illustrates an example of the choice of gaps between the surface of the housing of the mining machine and the surface of the converter mounting with the help of spacers made of magnetic material.

The transducer contains a piezoelectric vibration transducer 1, an information cable 2, a base 3, a magnet 4, a preamplifier unit 5, a cover 6, a cable entry 7, a threaded element, an OE seal, a contact strip 10, a spacer 11 of magnetic material, a non-magnetic spacer 12, a spring 13 , lock 14 and lock 15.

The base 3 and the contact strip 10 must be made of a non-magnetic metal, since they must simultaneously ensure the transmission of vibration information from the object to the piezoelectric vibration transducer and the impossibility of attracting magnetic materials to themselves.

The Converter operates as follows.

Before mounting the transducer onto the measurement object, release the latch 15 to the extreme extended position. At the same time, under the action of the spring 13, the lock 14 rises and releases the non-connected magnets 4, magnetic spacers 11 and non-magnetic spaces 12.

The transducer is mounted on the body of the mining machine by means of the contact strip 10. Spacers 11 of magnetic material under the action of magnetic forces attach the transducer to the body of the mining machine, forming a mounting surface that coincides with the unevenness of the surface of the housing (Fig.2).

Then the retainer 15 is pushed in and fixed in the base 3. Under the action of the retainer 15, the lock 14 compresses the spring 13 and with its working surface squeezes spacers 11 made of magnetic material, non-magnetic spacers 12 and magnets 4. The contact with the working surface of the mining machine remains the same as before

fixings

The oscillations of the hull of the mining machine are transmitted through the spacer 11 of magnetic material and the contact strip 10 by the magnet 4, and then the vibration base 1 is transferred to the vibration piezoelectric transducer 1. The electric signal from the piezoelectric transducer 1 vibration, proportional to the vibration acceleration, is fed to the block 5 of the pre-shock;

information cable 2 is output to a recording device

Cable conduit 7 and seal 9 serving i to ensure the sealing of the transform of the cover 6 to the base 3 turnips, pp-o- by means of the threaded element 8.

The use of the proposed transducer with a magnetic holder that converts mechanical vibrations

mountainous MSi in n electric signal, increased the dogfire fidelity of transmission of vibration lift, mation due to the provision of more contact between the contact surface from the object and the magnetic holder

Claims (1)

Claims of the Inverter of Mechanical Oscillations of Mountain Machines, Containing a Vibration Piezoelectric Transducer with a Cable connected to one of the flat surfaces of the base, the other flat surface of which is associated with a magnetic holder, characterized in that, in order to increase reliability, contact strips are inserted in it, spacers made of magnetic and non-magnetic material, the magnetic crush is made in the form of touching the base a set of magnets equally spaced from each each other between the base and the contact bar, each pair of magnets being separated by two simple magnetic materials installed in the holes of the contact bar connected to the base on both sides of the non-magnetic spacer, and the magnets and spacers are connected to a spring-loaded lock. shh. 15 15 FIG. 2