JPH0443793Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a power supply device for an optical shaft torsion meter used to measure the torsion of a rotatable shaft connecting a main engine and a propeller of a ship, for example.

[Prior Art] Conventionally, this type of optical shaft torsion meter has an arbitrary distance L from the outer circumference of a shaft 10 that connects the main engine of a ship (not shown) and a propeller, as shown in FIG. First and second fixed rings 11 and 12 are installed, and the first fixed ring 11 is provided with the screw meter main body 13, and the other second fixed ring 12 is provided with a reflecting mirror, for example, a concave mirror 14. It is arranged corresponding to the screw gauge main body part 13. As shown in FIG. 4, first and second pipes 15 and 16 are attached to the screw gauge main body 13 with a predetermined distance therebetween. A pipe 18 supporting a condensing lens 17 and a mounting body 20 supporting a light source 19 for emitting laser light are inserted into one end of the first pipe 15. is connected via a lead wire 21 to the battery section 1 which houses a battery for power supply. and,
A pipe 22 is attached to the other end of the first pipe 15. On the other hand, a pipe 23 is connected to one end of the second pipe 16, and a mounting body 25 supporting a magnifying lens 24 is inserted into this pipe 23. Furthermore, a mounting body 27 that supports a light receiving sensor 26 such as a semiconductor photoelectric device is inserted into the other end of the second pipe 16 . This light receiving sensor 26 is connected to the amplifier 2 via a lead wire 28.
The amplifier 29 is connected to the battery unit 1 via a lead wire 30, and is also connected to a recorder via a transmitter (not shown).

In the above configuration, the laser beam irradiated from the light source 19 passes through the condensing lens 17 to the concave mirror 14.
After being reflected, the light is guided to the light receiving sensor 26 via the magnifying lens 24. Then. Light receiving sensor 26
detects the voltage output corresponding to the position hit by the laser beam and outputs the detection signal to the amplifier 29. As a result, the amplifier 29 outputs the detection signal to the recorder via the transmitter to record and display it, and the detected value detected in advance when the shaft 10 is stopped rotating and the detected value when the shaft is rotating are displayed here. are compared, and the torsion value of the shaft 10 is determined from the difference.

However, due to the structure of the optical axial torsion meter described above, there is a limit to the capacity of the battery used as a power source for each part including the light source body 19, so there is a risk that the battery capacity will run out during, for example, voyage of a ship. had. According to this, it is necessary to temporarily stop the main engine, stop the rotational drive of the shaft 10, and replace the battery, which has a problem in that the work is very troublesome.

[Problems to be solved by the invention] This invention was made in view of the above circumstances, and is an optical shaft screw that has a simple structure and has a long usage time so that it is suitable for regular use. The purpose is to provide a power supply device for meters.

[Means for Solving the Problem] This invention installs first and second fixed rings at an arbitrary interval in the axial direction of the outer circumference of a rotatable shaft, and A torsion meter main body portion having a light source body and a light receiving sensor is installed on the second
In a power supply device for an optical axial torsion meter, in which a reflecting mirror is installed corresponding to the main body part with respect to a fixed ring,
a ring member that is fixed to the support body and has a gear portion into which the shaft is loosely inserted coaxially; and a generator that is fixed to the shaft and electrically connected to the light source body and the light receiving sensor. and a drive gear fitted onto the drive shaft of the generator and meshed with the gear portion of the ring member.

[Operation] That is, with the above configuration, when the shaft is rotationally driven, the drive gear of the generator is rotationally driven by the gear part of the ring member, the generator is driven to generate electricity, and the electric power is used to drive the screw meter. It is designed to work.

[Example] Hereinafter, an example of this invention will be described in detail with reference to the drawings.

Fig. 1 shows a power supply device for an optical axial torsion meter according to an embodiment of this invention, and the same parts as the optical axial torsion meter shown in Fig. 3 described above are given the same reference numerals. The explanation will be omitted. That is, the first
In the figure, reference numeral 10 indicates an axial direction connected to the above-mentioned main engine, and a generator 31 is installed at a predetermined position thereof, and a drive gear 32 is fitted onto a drive shaft 31a of the generator 31. This generator 31 includes an amplifier 29 and a transmitter 3 connected to the light receiving sensor 16.
3 is connected via a lead wire 34, and the light source body 19 is connected via a lead wire 35. Further, a ring member 36 is loosely inserted into the shaft 10 so as to correspond to the generator 31 . This ring member 36 has a plurality of attachment portions 36a formed at predetermined intervals on its outer periphery, and the attachment portions 36a are fixed to a support structure such as a ship body (not shown). For example, a gear part 37 is formed on the inner peripheral wall of this ring member 36, and this gear part 37
A drive gear 32 fitted onto the drive shaft 31a of the generator 31 is meshed with the drive gear 32.

That is, in the above configuration, when the shaft 10 is rotationally driven, rotational force is first applied to the drive gear 31 fitted to the drive shaft 31a of the generator 31, so that the drive gear 32 is rotated around the ring member 36. It acts with the gear part 37 and is rotationally driven. This results in
The generator 31 is driven so that its drive shaft 31a is rotationally driven to generate electric power and supply electric power to the light source 19, the amplifier 29, and the transmitter 33 via the lead wires 34 and 35, as described above. The detected value is recorded and displayed on a recorder (not shown) from the transmitter 33 (not shown in FIG. 3), and the torsion of the shaft 10 is determined by comparing this detected value with the detected value when the rotation is stopped. .

In this way, the power supply device of the optical shaft torsion meter is configured such that a power generator is installed on the shaft that is the object to be detected, and the rotational force of this shaft is used as the drive source to drive the generator. By achieving a longer lifespan, it is possible to prevent the problem of the main engine temporarily stopping when replacing the battery due to the lack of capacity of the battery, which occurs when batteries are used as a power source as in the past. The ease of handling can be improved as much as possible.

Furthermore, in the above embodiment, a case was explained in which the torsion of a shaft connected to the main engine of a ship is measured, but this invention is not limited to this, and for example, various rotating shafts such as turbines of power plants can be measured. It is also applicable to an optical shaft torsion meter that measures torsion.

[Effects of the invention] As detailed above, this invention provides a power supply device for an optical axial torsion meter that has a simple configuration and has a long operating time so that it is suitable for regular use. can do.

[Brief explanation of drawings]

Fig. 1 is a configuration explanatory diagram showing a power supply device of an optical axial torsion meter according to an embodiment of the invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a conventional FIG. 4 is a cross-sectional view showing details of the main part of FIG. 3. DESCRIPTION OF SYMBOLS 10... Shaft, 11, 12... First and second fixed rings, 13... Thread meter main body, 14... Concave mirror, 1
5, 16...First and second pipes, 17...Condensing lens, 18, 22, 23...Pipe, 19...
...Light source body, 20, 25, 27... Mounting body, 2
1, 28, 30, 34, 35...Lead wire, 24
... Magnifying lens, 26 ... Light receiving sensor, 29 ...
Amplifier, 31... Generator, 31a... Drive shaft, 3
2... Drive gear, 33... Transmitter, 36... Ring member, 36a... Attachment part, 27... Gear part.

Claims (1)

[Scope of utility model registration request] First and second fixed rings are installed at an arbitrary interval in the axial direction of the outer circumference of the rotatable shaft, and
A torsion meter main body having a light source and a light receiving sensor is installed on the fixed ring, and a reflecting mirror is installed on the second fixed ring in correspondence with the main body. In the power supply device, the ring member is fixed to the support structure and has a gear portion into which the shaft is loosely inserted coaxially, and the ring member is fixed to the shaft and electrically connected to the light source body and the light receiving sensor. What is claimed is: 1. A power supply device for an optical shaft torsion meter, comprising: a generator; and a drive gear fitted onto a drive shaft of the generator and meshed with a gear portion of the ring member.