SU1323240A1 - Apparatus for measuring physical and chemical parameters of shaft when it rotates - Google Patents

Abstract

The invention relates to a measurement technique and can be used to transfer data to a stationary recording device about the time, personal parameters of a rotating shaft, such as pressure or temperature,: The purpose of the invention is to increase the accuracy and reliability of the measurement by eliminating the possibility of a flexible cable twisting. Flexible cable 3 input end 15 is connected to the sensor 2 S IS | SL rs / 7 SAE to 00 S 4 ;; S 20

Description

an object located at the end of the hollow shaft 1, and the output end 18 with a recording device 4 j, the cable is looped in its middle part 17, and its ends 15, 18 are located along the axis of rotation and are directed in one direction. The hollow is driven into rotation from the drive shaft 5 through a differential planetary gear, in which a middle part 17 of the cable is mounted in the strut 9.

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The invention relates to the measuring technique and can be used

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for transmitting data on various parameters of a rotating shaft, for example, temperature or pressure, to a fixed recording device.

The aim of the invention is to improve the accuracy and reliability of measurements by eliminating the possibility of twisting.

 The drawing shows the design of the device.

The device contains a hollow shaft 1, in which a block of 2 sensors of measured parameters is placed, connected by a flexible cable 3 to a recording device 4 (device 4 and block of 2 sensors are shown conventionally). The hollow shaft 1 is placed alongside the drive shaft 5 of the engine and connected to it by a differential planetary gear consisting of a carrier, which includes a bearing 7 fixed to the shaft of the engine 6, connected by stitches 8 and 9 s with bearing support 10 (t i.e. includes elements 7-10), and gear gear systems 11-14.

A gear 11 is mounted on the motor shaft 6 and meshes with the gear 12 mounted on the stud 8.

Gear 8 also has gear 13, which is engaged with gear 14 located on the hollow shaft 1, which is mounted coaxially in the bearing support 10. The ratio of the diameters of gears 11 and 12, 13 and 14 is selected so that the gear The ratio between the carrier and the hollow shaft is 1: 2, and the directions of rotation of the carrier and the straight shaft coincide. The output end of the cable is twisted due to the rotation of its input shaft and unwound due to the rotation of its part by the carrier. Under these conditions, The second end of the cable remains Fixed, which provides a link between a moving object and a fixed recorder for a short length of cable 1 slug.

2

The distance from the carrier to the hollow shaft was 1: 2.

The cable 15 input end .3 from the sensor unit 2 is led through the center of the hollow shaft 1 along the axis of rotation and then through the stitch 9, in which a hole 3 is provided for passage of the cable 3, which is formed by the inner ring of the bearing 16. Then, in the middle part, the cable 3 is deployed in the opposite direction with respect to the direction of its exit from the hollow shaft 1, thereby forming a loop-like curved middle part 17 of the cable 3, which is located eccentric to the axis of rotation of the shaft. At the same time, the output end 18 of the cable 3 passes through the supporting bearing assembly 19 coaxial with the hollow shaft 1 and is connected to the device 4.

Engine b mounted on frame 20

The device works as follows.

The hollow shaft 1 together with the sensor unit 2 is driven into rotation by the drive shaft 5 of the electric motor 6 through the system of gears 11-14. The input end 15 of the cable 3 is connected to the unit 2 of sensors of measured parameters and is located in the hollow shaft 1 along its axis rotates at the same angular velocity as the hollow shaft 1.

The middle part 17 of the cable 3 is looped in a loop-like manner, entrained by the tie 9, rotates in the same direction as the hollow shaft 1, with an angular velocity two times smaller than the angular

31323240

speeds of the hollow shaft 1. As a result of the specified ratio of 2: 2 speeds of rotation of the hollow shaft 1 and the carrier bolt 9, as well as their rotation into one

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the curved middle part of the cable ensures the specified location of the ka- / 0 bel in space and a sequence of its movement in which one end of the cable rotates and the other does not rotate. In this device, the transmission of information from the α-2 sensor unit

the side, the output end 18 of the cable 3, the changeover, on the carrier of which a hollow shaft passing through the bearing assembly shaft drive shaft 19 is installed, is left without rotation, which also allows the carrier to connect the looper 3 to mount the output end 18 of cable 3 on a fixed device 4. The bearing unit 16 in the strut 9 and the fixed supporting bearing unit 19 protects the cable 3 from abrasion due to the presence of some alternating twisting of the cable at the points of passage through J5 to the device 4 without any Dusts under the angle of galvanic communication with the help of not more than 180. communication element, in which

The principle of operation of cable 3 can be a short section of cable, which can be seen as follows. Possessing a small and stable value. Suppose that the input end is 15 the impedance. Therefore, the cable 5 is twisted along the axis of the rotational loss of the signal in the cable also by ignorance by the angle di /. At the same time, this leads to an increase in the accuracy of measuring the axial rigidity of the rhenium cable. In addition, at a short outlet from its end 18 turns to cut the cable leads to a small noise at an angle (-d t /). If at the same time there is a simultaneous signal, which increases the ratio of signaling to rotate the middle part of the cable to noise, and, consequently, by 3 around the axis of rotation of shaft 1 in the same direction as its input end 15 by angle dif, then the total angle of twist the input end 15 of the cable 3 is 2d t / td if + d C 2d f, and the total twist angle of the fixed end 18 of the cable 3 is equal to O d (-d () 0. If the input end 15 is twisted and the middle part 17 of the cable 3 is produced continuously with angular speed

reliability of measurements.

Thus, when using the proposed device, the accuracy and reliability of the measurement increased threefold.

Claims (1)

Invention Formula 35 A device for measuring the physicochemical parameters of the shaft as it rotates, which contains a rotation drive and a flexible cable, the input end of which is connected to the sensor unit, and then the output end 18 18 installed on the shaft, and the output co2dLf - dt / .. ui and -j- w in one direction of the cable will remain without rotation. Thus, the location of the cable is in the form of a loop-like curved segment, the ends of which are located along the axis of rotation in one direction, and the middle part is eccentric to the axis of rotation of the hollow shaft, as well as the rotation of the middle part of the cable and polonets with a recording device that , in order to increase the accuracy and reliability of the measurement, the rotational drive is made in the form of a differential gear, the carrier of which is provided with a hollow shaft installed with the possibility of its rotation relative to the carrier at a speed greater than two aza, wherein The shaft in one direction with the speed of the input and output ends of the cable with a width of 1: 2 ensures the connection of sensors located on the rotating shaft with the stationary device 4 without rotation of the output end of the cable. is he placed along the axis of rotation of the hollow shaft, and the middle part of the cable is installed in the carrier eccentric to the axis of rotation of the hollow shaft. VNIIPI Order 2903/13 Random polygons pr-tie, Uzhgorod,. Project, 4 only a few are twisted relative to the average position at an angle of not more than 180 °. . Differential planetary re-bent middle part of the cable ensures the specified location of the ka / 0 bel in space and such a cyclogram of its movement in which one end of the cable rotates and the other does not rotate. the transfer, on the carrier of which the hollow shaft coaxial with the drive shaft is mounted, also communicates with the carrier J5 to the loop 4 device is carried out without unraveling communication with the aid of a communication element, which reliability of measurements. Thus, when using the proposed device, the accuracy and reliability of the measurement increased threefold. Invention Formula It is not possible with a registering device, characterized in that, in order to improve the accuracy and reliability of measurement, the rotational drive is performed as a differential gear, the carrier of which is equipped with a hollow shaft installed with the possibility of its rotation relative to the carrier at a speed twice as high , wherein input and output cable ends placed along the axis of rotation of the hollow shaft, and the middle part of the cable is installed in the carrier eccentric to the axis of rotation of the hollow shaft. Circulation 975 Subscription