JP2855763B2 - Ultrasonic input / output method for linear object and ultrasonic input / output device used for the method - Google Patents

Description

The present invention relates to a method for inputting / outputting ultrasonic waves to / from a linear body and an ultrasonic input / output device used for the same, and more particularly, for example, to an overhead ground wire or the like. The present invention relates to a method of inputting / outputting ultrasonic waves to / from an existing linear object and an ultrasonic input / output device used for the method.

2. Description of the Related Art Conventionally, as a method of transmitting and receiving ultrasonic information to and from a linear object in the direction of its line by transmitting and receiving desired information, for example, a ring-shaped ultrasonic transducer is applied from one end of the linear object. Of the ring is vibrated in the center direction (radial direction) of the ring. That is, in the past,
The ultrasonic vibrator was attached from one end of the linear object.

[Problems to be Solved by the Invention] However, in such a conventional method, when the linear object is an existing one that cannot be easily removed, such as an overhead ground wire, the linear object is not easily removed. It is practically impossible to attach an ultrasonic vibrator from the end of the object, and there has been a disadvantage that ultrasonic input / output cannot be performed on such an existing linear object.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily input and output ultrasonic waves even to a linear object that is already installed and cannot be easily removed.

Means for Solving the Problems The present invention according to claim 1 is a method for inputting / outputting an ultrasonic wave to / from an existing linear object, wherein the ultrasonic wave is applied to a part of the linear object in the longitudinal direction. A branch input / output unit is attached, and ultrasonic waves are input / output to / from the linear object via the ultrasonic branch input / output unit.

The present invention according to claim 2 has an ultrasonic branch input / output body configured to be attachable to a linear object, and the ultrasonic branch input / output body is attached to the linear object while the ultrasonic branch input / output body is attached to the linear object. An ultrasonic input / output device for inputting / outputting an ultrasonic wave to / from the linear object via an ultrasonic wave branch input / output body, and a mounting tool for mounting the ultrasonic branch input / output body to the linear object, An ultrasonic transducer attached to an ultrasonic branch input / output body, wherein the ultrasonic branch input / output body is attached to the linear object,
A transmission surface for contacting the linear object and transmitting ultrasonic waves to and from the linear object is included.

According to a third aspect of the present invention, in the ultrasonic input / output device according to the second aspect, the ultrasonic vibrator has a ring shape, and a vibration direction is a center direction of the ring.

The present invention according to claim 4 is the invention according to claim 2 or claim 3.
The ultrasonic input / output device according to any one of the above, further comprises an elastic body interposed between the ultrasonic transducer and the ultrasonic branch input / output body.

[Operation] According to the present invention as set forth in claim 1, an ultrasonic branch input / output unit is attached to a longitudinally intermediate portion of the linear object, and the ultrasonic input / output unit is superposed on the linear object via the ultrasonic branch input / output unit. In order to input and output sound waves, an ultrasonic transducer can be attached to the ultrasonic branch input / output body to input and output ultrasonic waves, and it is necessary to attach the ultrasonic transducer from the end of the linear object. In addition, even if the linear object is an existing one and cannot be easily removed, it is possible to easily input and output ultrasonic waves.

According to the second aspect of the present invention, the ultrasonic branch input / output body can be attached to the linear object by the attachment. In a state where the ultrasonic branch input / output body is attached to the linear object, the transmission surface of the ultrasonic branch input / output body comes into contact with the linear object, and a gap between the linear object and the ultrasonic branch input / output body is formed. The ultrasonic wave is transmitted. Further, an ultrasonic vibrator is attached to the ultrasonic branch input / output body, so that ultrasonic waves can be transmitted between the ultrasonic vibrator and the linear object via the ultrasonic branch input / output body.

In other words, since the ultrasonic branch input / output body is attached to the middle part of the linear object in the longitudinal direction and the ultrasonic wave can be input / output to / from the linear object, the ultrasonic vibrator is started from the end of the linear object. It is not necessary to mount the device, and even if the linear object is an existing one that cannot be easily removed, it is possible to easily input and output ultrasonic waves to the linear object.

According to the third aspect of the present invention, in addition to the function of the second aspect, since the ultrasonic vibrator has a ring shape and the vibration direction is the center direction of the ring, Input / output of ultrasonic signals to / from the branch input / output body is performed at high efficiency.

According to the fourth aspect of the present invention, in addition to the function of the second or third aspect, an elastic body is interposed between the ultrasonic transducer and the ultrasonic branch input / output body. For example, even if there is a slight dimensional error between the ultrasonic vibrator and the ultrasonic branch input / output body, the mounting contact surface between the ultrasonic branch input / output body and the ultrasonic vibrator comes into close contact with the elastic body. . Further, in the ultrasonic vibration region, the elastic body acts almost as a rigid body to transmit ultrasonic waves. On the other hand, if air is present on the mounting contact surface between the ultrasonic transducer and the ultrasonic branch input / output body, the absorption and diffusion of vibration energy by air and from the air to the ultrasonic vibrator and the ultrasonic branch input / output body The input and output efficiency of the ultrasonic wave is greatly reduced due to the reflection when the ultrasonic wave is incident. Such air can be prevented as much as possible by the close contact of the mounting contact surface by the elastic body, and the input / output efficiency of ultrasonic waves is improved.

Next, an embodiment of the present invention will be described with reference to the drawings.

1A and 1B are explanatory views showing a state in which a half-pulverized pipe-shaped ultrasonic branch input / output unit 3 is attached to an overhead ground wire 1 as an example of a linear object.

The ultrasonic branch input / output body 3 includes a cylindrical pipe portion and a half-split pipe portion, and the inner surface 3 ′ of the half-split pipe portion attaches to the linear object 1 in a state of being attached to the linear object 1. A transmission surface for transmitting ultrasonic waves between the linear object and the ultrasonic branch input / output body 3 upon contact is formed.

A ring-shaped vibrator 2 as an example of an ultrasonic vibrator made of a piezoelectric element or the like is externally fitted to a cylindrical portion of the ultrasonic branch input / output body 3. An elastic body 7 is interposed between the ring-shaped vibrator 2 and the ultrasonic branch input / output body 3 so that the mounting contact surface between the ring-shaped vibrator 2 and the ultrasonic branch input / output body 3 is in close contact. Is configured.

As shown in FIG. 1B, the ultrasonic branch input / output body 3 is attached to the overhead ground wire 1 by a fastening band 4 as an example of a fixture. The inner surface 3 'in the state of being attached by the tightening band 4
Contacts the outer peripheral surface of the overhead ground wire 1. In the mounting state shown in FIG. 1B, a device for vibrating the ring-shaped vibrator 2 and a device for receiving vibration of the ring-shaped vibrator 2 are mounted, and ultrasonic waves are input to the overhead ground line 1 or from the overhead ground line 1. Or receive ultrasonic waves. The ring-shaped vibrator 2 vibrates in the center direction (radial direction) of the ring. The overhead ground wire 1 shown in FIG. 1A and FIG. 1B is drawn by extracting a middle part in the longitudinal direction, and a cross section of the overhead ground wire 1 is illustrated for explanation. Is not shown, and the same is true in FIGS. 2A and 2B.

FIG. 2A and FIG. 2B are explanatory diagrams showing another embodiment and showing a state in which an ultrasonic branch input / output unit is attached to the overhead ground wire 1. FIG.

In the figure, reference numeral 5 denotes a connecting bracket, which has a divided structure that can be integrated by tightening the divided bodies with bolts and nuts.
The bolts and nuts 20 of the connecting fitting 5 are loosened to divide the connecting fitting, and the bolts and nuts 20 are sandwiched between the overhead ground wire 1 by the overhead ground wire insertion hole 10 and the branch wire 12 by the branch wire insertion hole 11. The divided bodies are integrated by tightening. This condition is shown in FIG. 2B. In the figure, 2 is a ring-shaped vibrator, and 7 is an elastic body. By attaching in this manner, ultrasonic waves are input / output to / from the overhead ground wire 1 via the connection fitting 5, the branch line 12, and the ring-shaped vibrator 2. The connection bracket 5 and the branch line 12 constitute an ultrasonic branch input / output body.

In the present embodiment, the overhead ground wire 1 in which a stranded wire is integrated is shown as an example of a linear object. However, the present invention is not limited to this. Good.

[Effects of the Invention] According to the present invention as set forth in claim 1, ultrasonic waves can be input / output from a midpoint in the longitudinal direction of the linear object, and even if the linear object is difficult to remove the existing one. It is possible to easily input and output ultrasonic waves.

According to the present invention as set forth in claim 2, an ultrasonic branch input / output body is attached to a middle part in the longitudinal direction of the linear object to enable input / output of ultrasonic waves, and the linear object is difficult to remove the existing one. An ultrasonic input / output device capable of easily inputting / outputting ultrasonic waves, even if present, has been provided.

According to a third aspect of the present invention, in addition to the effect of the second aspect, the input / output efficiency of ultrasonic waves is improved.

The present invention according to claim 4 is the invention according to claim 2 or claim 3.
In addition to the effects of the invention described in the above, even if there is some dimensional error between the ultrasonic vibrator and the ultrasonic branch input / output body, the reduction of the ultrasonic transmission efficiency is minimized by the close contact action of the elastic body. It has an effect that can be prevented.

[Brief description of the drawings]

FIG. 1A and FIG. 1B are explanatory diagrams for explaining an attached state of an ultrasonic branch input / output body according to the present invention. FIG. 2A and FIG. 2B are explanatory diagrams showing another embodiment and illustrating an attached state of an ultrasonic branch input / output body. In the figure, 1 is an aerial ground wire as an example of a linear object, 3 is an ultrasonic branch input / output body, 2 is a ring-shaped vibrator as an example of an ultrasonic vibrator,
Reference numeral 7 denotes an elastic body, 4 denotes a tightening band as an example of a fixture, 5 denotes a connection fitting, and 12 denotes a branch line.

Claims (4)

(57) [Claims] 1. A method for inputting / outputting ultrasonic waves to / from an existing linear object, comprising: attaching an ultrasonic branch input / output body to a middle portion in a longitudinal direction of the linear object; An ultrasonic input / output method for inputting / outputting an ultrasonic wave to / from the linear object through a linear object. 2. An ultrasonic branch input / output unit which is configured to be attachable to a linear object. The ultrasonic branch input / output unit is attached to the linear object. An ultrasonic input / output device for inputting / outputting an ultrasonic wave to / from the linear object through an ultrasonic input / output device, comprising: a mounting device for mounting the ultrasonic branch input / output member to the linear object; Wherein the ultrasonic branch input / output body contacts the linear object and transmits ultrasonic waves to and from the linear object in an attached state to the linear object. Ultrasonic input / output device including a transmission surface for 3. The ultrasonic transducer has a ring shape,
The ultrasonic input / output device according to claim 2, wherein the vibration direction is a center direction of the ring. 4. The ultrasonic input / output tool according to claim 2, further comprising an elastic body interposed between the ultrasonic transducer and the ultrasonic branch input / output body.