SU1525584A1 - Apparatus for recording maximum accelerations - Google Patents

Abstract

This invention relates to a measurement technique. The purpose of the invention is to improve the accuracy of the information received and the maximum accelerations. The device consists of an inertial mass 3 attached by means of an elastic element 2 to the base 1. A contact plate 7 is attached to the inertial mass, which contacts the abutment 6, which with the aid of a spring 5 presses to the four-point guides 4. The abutment 6 and the contact plate 7 are included in electrical circuit 9 of the reading device. The elastic element of the reading device is made in the form of a spring 10, one end of which rests on the inertial mass 3, and the other on the screw 11 of the reading device having a disk 12 with graduation. When the object is accelerated in the direction of arrow A, the inertial mass 3 deviates from the state of equilibrium in the opposite direction, while the contact plate 7, overcoming the friction force in the guides 4, moves the stop 6, previously brought into contact with the initial push rod 15 position. After a long stay of the device on the object between the contact plate 7 and the stop 6, there will be a gap corresponding to the maximum movement of the inertial mass 3 under the action of the maximum emission of inertia forces. Measurement of the filled deviation is as follows. Rotating the screw 11 in a stationary condition, compresses the spring 10. Under the effect of increasing force of the latter, the inertial mass 3 moves until the gap is completely selected and at this moment electrical contact between the plate and the abutment closes, the electrical circuit 9 of the reading device turns on and the LED lights up. 1 hp f-ly, 1 ill.

Description

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plate 7, overcoming the forces of trend in the direction of 4, moves the stop 6, previously bringing the reset pusher 15 in contact with it. After a long stay of the device on the object between the contact plate 7 and the stop 6, the gap will remain, corresponding to the maximum movement of the inertial mass 3 under the action of the maximum emission of inertia forces. Measurement of the filled deviation is as follows. Rotating a pint of 11 n stationary conditions, compress the nrulsiiu 10. Under the effect of increasing the force of the latter, the inertial mass 3 moves to the full choice of the gap and at this moment the electrical contact between the plate and the stop stops, the electrical circuit 9 switches on the device and the LED lights up . 1 zn f-ly, 1 ill.

The invention relates to a measurement technique, specifically to devices for measuring acceleration, and can be used in aircraft building, j-oH-electric, electronic, and a number of special, industrial industries.

The purpose of the invention is to improve the accuracy of the obtained information on the maximum acceleration rate.

The drawing shows a device for registering maximum accelerations.

On the base 1, with the help of an elastic element 2, an inertial mass 3 is fixed and four-point guides 4 are rigidly fixed, to which a cylindrical stop 6 is attached with a spring 5. On the inertial mass 3 a contact plate 7 is fixed, insulated from it by an insulating layer 8. The stop 6 and the contact plate 7 are included in the electrical circuit 9 of the reading device. the element of the reading device is made in the form of a spring 10, one end of which rests on the inertial mass 3, and the other on the screw 11 of the reading device having a disk 12 with graduation. All the elements of the device are placed in the housing 13, filled with a frost-resistant dielectric liquid 14. The disk 12 of the reading device is closed with a latch (not shown). Under the stop is located the pusher 15 of returning the stop to the initial position} 1.

The device works as follows.

With the accelerated movement of the object in the direction of the arrow A, the inertial mass 3 deviates from the state

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the news in the opposite direction, while contacting shgastina 7, overcoming the friction force in the guides 4 moves the support 6, which had previously pripedonnil in contact with the Hefi push rod 15 to return to its original position. When the acceleration of the object decreases between the edge of the anvil 6 and the contact plate 7, an armature is formed. When bursts of accelerator 1P1 are greater than H1, the actual values, plate 7 additionally moves the stop 6 along the guides 4. After a long stay of the device on the object between the contact plate 7 and the stop 6, the gap corresponding to the maximum displacement of the inertia mass 3 under the action of the maximum inertia ejection . This memorizes the maximum displacement of the inertial mass corresponding to the maximum acceleration.

The measurement of the memorized deviation is performed as follows.

8 stationary conditions, wrench and vpnt 11 of the screw mechanism, compress the spring 10. Under the action of increasing. the force of the last inern.poin mass 3 on the elastic element. 2 moves, reducing the gap between the contact plate 7 and the stop 6; At the moment of complete selection of the gap, the electrical contact between the plate and the stop closes, the electrical circuit is turned on

9 of the counting device, and the LED appears. At this point, the loading of the pushers 10 is stopped and

on a scale of disk 12, read the value of the maximum acceleration registered by the device. Electric display system 9} is completed in vi51

The first unit is connected to the device located on the object only for the period of information retrieval.

To reduce atmospheric and climatic influences on the contact surface of plate 7 and stop 6 (pollution, oxidation, freezing at low temperatures), the device is filled with a cold-resistant dielectric fluid, for example, TOSOL-40

Claims (2)

1. A device for registering maximum 1) NOx accelerations, containing about 10 255846 inertial mass associated with the base by means of an elastic element, uior interacting with inertial mass, and a reading device, characterized in that, in order to improve accuracy, the device is equipped with four-point guides in which the watch is placed with the possibility of its fixed movement under the action of an inertial mass, which on the one hand is connected to a reading device consisting of a spring, a screw and a disk with graduation, and on the other, through an insulation layer with a contact plate, with an emphasis, while the electrical circuit of the counting device is connected to the control contact plate. 2. A device according to claim 1, characterized in that the contact plate and the stop are immersed in a cold-resistant dielectric fluid.