JPH0729471Y2 - Optical shaft horsepower meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an optical axial horsepower meter.

[Prior Art] As shown in, for example, the side view of FIG. 5 and the perspective view of FIG.
Around the outer circumference of the two rings by an appropriate distance 1 in the axial direction,
3, a camera 4 is installed on one ring 2, and a reflection mirror 5 is installed on the other ring 3. The camera 4 is composed of a slit light source 6, a magnifying lens 7, a prism 8 and the like, and a film 9 And the film 9 is configured to be slid by a sliding mechanism (not shown).

The axial horsepower of the rotary shaft 1 is measured by the following procedure using the torsion gauge having such a configuration.

That is, since the rotating shaft 1 is generally an elastic body, when the rotating shaft 1 is loaded and rotated, twisting occurs as shown in the explanatory diagram of FIG. 7, and two points of the axial length 1 of the rotating shaft 1 are generated. The twist on the point where the twist angle between them is θ and is away from the axis by r is represented by δ, and the torque Q can be obtained by the equation (1) by detecting this twist δ.

However, D is the diameter of the rotating shaft 1 and G is the elastic modulus.

In detecting the twist .delta., The light beam 6a emitted from the slit light source 6 is reflected by the reflection mirror 5 and projected onto the surface of the film 9 mounted in the camera 4. To be photographed. By performing this photographing when the rotating shaft 1 is not rotating, that is, when there is no load, a zero point is obtained, and when the rotating shaft 1 is loaded and then rotated, it is reflected by the camera 4. The relative position of the mirror 5 deviates by a twist δ, and hence the light beam from the slit light source 6 at this time
The film 6a 'is as indicated by the dotted line in FIG.
Since the image is projected onto a position shifted by 2δ on the surface, the twist δ can be obtained by analyzing the interval between the load measurement point and the zero point after the film development.

However, such a device has the following drawbacks.

(1) Since the answer cannot be obtained unless the film is developed and analyzed after the test, the axial horsepower is not required during the measurement, and the measurement work efficiency is poor.

(2) Since the film length is limited, the measurement time or the number of measurement points is limited.

(3) Since the analysis time is long, the measurement cost is high.

[Problems to be solved by the device]

The present invention has been proposed in view of such circumstances,
An object of the present invention is to provide an optical axial horsepower meter which can obtain an axial horsepower value at the same time as measurement and can be measured as needed without being limited by time, which is advantageous in terms of measurement work efficiency and measurement cost.

[Means for Solving the Problems]

To this end, the present invention is provided with two slit light emitting means, reflected light expanding means, and light receiving means for semiconductor photoelectric devices, which are attached to one of a pair of rings fitted around the outer circumference of the rotary shaft at appropriate intervals in the axial direction. And a reflecting mirror mounted on the other side of the ring so as to face the above-mentioned twisting meter body, a transmitter which is installed on the above-mentioned rotating shaft and emits the output of the above-mentioned light receiving means as a radio wave signal, It is characterized by comprising a receiver installed outside the rotary shaft and receiving the radio wave signal, and an arithmetic processing unit for analyzing and displaying the twist and the axial horsepower of the rotary shaft based on the received signal.

[Action]

With the above configuration, the two slit lights emitted from the slit light emitting means of the main body of the screw on the rotating shaft are reflected by the reflecting mirror, and are reflected by the reflecting light expanding means to the light receiving means of the semiconductor photoelectric element. When projected, the voltage corresponding to that light spot is detected, and this detected voltage is transmitted from the radio wave transmitter and received by the radio wave receiver outside the rotation axis, and is connected to the receiver. At, the torsion of the rotating shaft and the axial horsepower are analytically calculated and displayed based on the received signal, and accordingly, the axial horsepower value is obtained simultaneously with the measurement.

〔Example〕

An embodiment of the optical shaft horsepower meter according to the present invention will be described with reference to the drawings. FIG. 1 is a side view showing the overall structure, FIG. 2 is a longitudinal sectional view of a screw gauge main body, and FIG. FIG. 4 is a block diagram of the device, and FIG.

First, in FIG. 1, two rings 2 and 3 are fitted around the outer circumference of the rotating shaft 1 to be measured with appropriate intervals, and a pair of axisymmetric mirrors 10 are fixed on the ring 3. A pair of axially symmetric torsion gauge bodies 11 are fixed on the ring 2 so as to face the reflection mirror 10. Further, a radio wave transmitter 28 is mounted on the outer periphery of the rotary shaft 1 at the rear of the main body 11 of the screw gauge, and a radio wave receiver 29 and a data processing device 30 for transmitting the received signal are arranged away from the rotary shaft 1. Has been done.

Next, referring to FIG. 2, the structure of the torsion meter main body 11 will be described. A pipe 13 is provided on the front surface of a pipe 12 which is inclined slightly rearward and downward with respect to the optical axis CL of the reflection mirror 10, and an LED lamp 14, a condenser lens 15, and a slit 16 are sequentially arranged inside the pipe 13 from the rear, The slit 16 is configured to emit two slit lights.

Further, a pipe 18 is provided in front of a pipe 17 that is symmetrically inclined with respect to the pipe 12 with respect to the reflection mirror optical axis line CL, and a magnifying lens 19 is provided therein. Therefore, the optical axis of the condenser lens 15 and the optical axis of the magnifying lens 19 are set symmetrically with respect to the reflection mirror optical axis CL. Pipe 17
A pipe 20 is connected to the rear of the CCD and a CCD sensor 21 is provided to the rear of the pipe. The CCD sensor 21 is configured by arranging a large number of semiconductor photoelectric elements on a straight line, and is connected to an amplifier 22 via a lead wire.

The LED lamp 14 is connected to the amplifier 22 via a lead wire, the amplifier 22 is connected to the power supply 24, and is also connected to the V / F converter 23 via a lead wire. Further, at the time of adjusting and adjusting the screw gauge, a finder 25 composed of a mirror 27 and a screen 26 is attached to the wrench main body 11, and the finder 25 is removed when the attachment and adjustment are completed.

The configuration of the data processing device 30 will be further described with reference to FIG.
2, and is connected to the analog data recorder 33 and the oscillograph 34, and is also connected to the A / D converter 35, the microcomputer 36, the display 37 and the printer 38. The tachometer 39 is also connected to the amplifier 32 and the A / D converter 35. In such a device, the shaft horsepower of the rotary shaft 1 is obtained by the following method.

The light emitted from the LED lamp 14 is converted into two slit lights by the slit 16 through the condenser lens 15, is reflected by the reflection mirror 10, and is reflected through the magnifying lens 19. When the light is projected onto the CCD sensor 21, the voltage corresponding to the light spot is detected by the amplifier 22.

The relationship between the light spot position of the CCD sensor 21 and the output voltage is shown in Fig. 4. For each of the two slit lights A and B, the turning point is zero and the axis actuates the measuring point. And the measurement points are as shown.

Based on this figure, the twist δ is obtained by the equation (2).

Where Δl is the length between two slits, ΔV is the output voltage difference between the two slits, V is the output voltage of the slit at one of the measuring points (one of the two), and V ₀ is the slit at the zero point (two of them). Output voltage of either one).

The voltage output from the amplifier 22 is converted into a frequency by the V / F converter 23, and is sent to the F / V converter 31 of the data processing device 30 via the radio signal device 28 and the radio receiver 29,
After being converted to voltage again, the amplifier together with the output of the tachometer 39
While monitoring the output with the oscilloscope 34 via 32,
The data is recorded by the analog data recorder 33, the data is processed in parallel with the A / D converter 35 and the microcomputer 36, and the data is displayed on the display 37 and the horsepower is printed on the printer 38. .

[Effect of device]

In short, according to the present invention, the two slit light emitting means, the reflected light expanding means and the semiconductor optoelectronic device are attached to one of a pair of rings fitted around the outer circumference of the rotary shaft at an appropriate interval in the axial direction. A twisting meter main body having light receiving means, a reflecting mirror mounted on the other side of the ring so as to face the twisting meter main body, and a transmitter which is installed on the rotating shaft and emits the output of the light receiving means as a radio signal. By having a receiver installed outside the rotary shaft and receiving the radio wave signal and an arithmetic processing unit for analyzing and displaying the twist and the axial horsepower of the rotary shaft based on the received signal, the axial horsepower value can be measured and measured at the same time. The present invention is extremely useful industrially, since an optical shaft horsepower meter is obtained that is obtainable and can be measured as needed without being limited by time and is advantageous in terms of measurement work efficiency and measurement cost.

[Brief description of drawings]

FIG. 1 is a side view showing the overall construction of an embodiment of the optical shaft horsepower meter of the present invention, and FIG.
FIG. 4 is a block diagram of the above data processing device, and FIG. FIG. 5 is a side view of a conventional torsion gauge of an optical axial horsepower meter, FIG. 6 is an enlarged perspective view of a main part of the same, and FIG. 7 is an explanatory view of twist in the same. 1 ... Rotation axis, 2,3 ... ring, 10 ... Reflecting mirror, 11 ...
… Torometer main body, 12,13 …… Pipe, 14 …… LED lamp, 15…
… Condenser lens, 16 …… Slit, 17,18 …… Pipe, 19
...... Magnifying lens, 20 ...... pipe, 21 ...... CCD sensor, 2
2 …… Amplifier, 23 …… V / F converter, 24 …… Power supply, 25
...... Finder, 26 ...... Screen, 27 ...... Mirror,
28 …… radio transmitter, 29 …… radio receiver, 30 …… data processor, 31 …… F / V converter, 32 …… amplifier, 33…
… Analog data recorder, 34 …… Oscilloscope,
35 …… A / D converter, 36 …… Microcomputer, 37 …… Display, 38 …… Printer, 39 …… Tachometer.

Continuation of the front page (56) References JP-A-51-131677 (JP, A) JP-A-63-274830 (JP, A) JP-A-59-203906 (JP, A) Actual development 61-147943 (JP , U)

Claims (1)

[Scope of utility model registration request] 1. Two slit light emitting means, a reflected light enlarging means, and a light receiving means for a semiconductor photoelectric element, which are attached to one of a pair of rings fitted around the outer periphery of a rotary shaft at an appropriate interval in the axial direction. And a reflection mirror mounted on the other side of the ring so as to be opposed to the twisting meter body, a transmitter that is installed on the rotating shaft and emits the output of the light receiving means as a radio signal, and the rotating body. An optical axial horsepower meter comprising: a receiver installed off-axis to receive the radio wave signal; and an arithmetic processing unit for analyzing and displaying the twist and axial horsepower of the rotary shaft based on the received signal.