JP2002311002A - Vehicle for inspection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems in conventional inspection methods for checking cracking or cavities in a concrete skelton in a tunnel in which a man judges them by hit sound by means of a hammer to cause pain during long-time work, and which is inefficient, requires scaffolds, and generates danger of peeling. SOLUTION: This vehicle is provided with devices for searching parts with cracking or cavities in the skelton by hammer hit sound. An inspection device comprising a hammer part which makes reciprocating motion, a hit sound detecting part to detect hit sound generated when the hammer part hits the skelton, a hit sound recording part to record hit sound data detected by the hit sound detecting part, and a spacer part to get in contact with the skelton for keeping distance between the hammer part and the skelton at the optimum is mounted on a vehicle body through a rotary member. The spacer part gets in contact with the skelton without depending on the distance to the skelton while reciprocating and rotating at a predetermined rotation speed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention performs a task of finding cracks and cavities caused by a defect or deterioration of a concrete skeleton forming a wall or a ceiling in a tunnel by hammering sound without using human labor. The present invention relates to the structure of an inspection vehicle.

[0002]

2. Description of the Related Art It has been reported from all over the country that concrete in a tunnel has come off, but in order to avoid a situation where concrete blocks come off and cause personal injury, the body is hit with a hammer in hand. Inspection work to search for cracks, etc. is performed with personnel similar to human tactics.

[0003]

However, both road tunnels and train tunnels have too high a height, so that the work is performed while securing a scaffold, which is very time consuming, cumbersome and safe. It was difficult. Also, the work of hitting the ceiling with a hammer is difficult to continue for a long time because it is forced to be in an unnatural posture, and the hammer will continue to hit, so there is a danger that concrete blocks will come off and fall.
Few measures have been taken in practice.

[0004] Further, in the work by the personnel, there are individual differences in the technique from the way of swinging the hammer to the hitting position and the distinction of the sound, so that it is not practically possible for all persons to perform the inspection with the same standard. (There is no system that can objectively judge how much abnormal noise is judged to be dangerous) and it is not possible for untrained beginners to work immediately. The fact is that the training of workers has not progressed.

[0005]

In view of these points, the present inventor has finally made the present invention as a result of intensive research, and the feature of the present invention is that cracks and hollow portions of the frame are caused by hammering noise. A hammer unit that continues to reciprocate, a hammer detector that detects a hammering sound generated when the hammer collides with a skeleton, and a hammer detector that detects the hammering sound. An inspection device having a hammer recording unit that records hammering data to be recorded, a spacer unit that contacts the skeleton in order to keep the distance between the hammer unit and the skeleton optimal, The point is that the spacer portion comes into contact with the frame regardless of the distance to the frame while reciprocatingly rotating at a predetermined rotation speed.

Here, the "vehicle" is an automobile in the case of a road tunnel, and a train in the case of a train tunnel. However, the details of the structure of the vehicle body are not limited at all.

It can be said that the feature of the present invention resides in the form of mounting the inspection equipment mounted on the vehicle body. Inspection equipment
A hammer section that continues to reciprocate, a hammer detector that detects a hammer generated when the hammer collides with the body, a hammer recorder that records hammer data detected by the hammer detector, And a spacer portion that comes into contact with the skeleton in order to keep the distance between the hammer portion and the skeleton optimal. The details of each device are not limited.

[0008] This inspection device is not fixedly mounted on the vehicle body, but is installed via a rotating member.
It is freely rotatable so that it can move along the inner periphery of the tunnel. In addition, unless the inner wall of the tunnel forms an arc and the rotation axis is located at the center of the arc, the distance between the vehicle body and the skeleton changes with the rotation movement. The moving member is also considered in this regard. Although the specific structure is not limited,
There are pantograph-shaped or telescopic-shaped telescopic type, and an arm-shaped body that is longer than the distance between the vehicle body and the frame is arranged at an angle and the angle of inclination is changed to accommodate the structure. . Thus, simply by moving the vehicle straight, the inspection equipment moves along the walls and ceiling of the tunnel, and the inspection of the skeleton of the tunnel can be automatically performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the drawings.

FIGS. 1A and 1B show an example of an inspection vehicle 1 according to the present invention (hereinafter referred to as "the vehicle 1 of the present invention"). An arm base 3 is fixed on a carrier of a vehicle body 2 where the vehicle 1 is a car with a carrier, and an inspection device 5 is attached to the other end of an arm 4 having one end attached to the arm base 3. It is what is being done.

The arm 4 is of a telescopic shape, and is constantly urged by a hydraulic cylinder in a direction in which it is extended, so that its length can be changed in the X direction in FIG. 1A. Further, the arm base 3 supports the arm 4 so as to rotate radially with respect to the traveling direction of the vehicle main body 2, that is, in the Y direction in FIG. Therefore, the arm 4 substantially expands and contracts and rotates.

FIG. 2 schematically shows an example of the inspection equipment 5 provided at the tip end position of the arm 4. A hammer unit 51 that continues to reciprocate, and a hammer detector 5 that detects a hammer generated when the hammer unit 51 collides with the frame T.
2. A hitting sound recording section 53 for recording hitting sound data detected by the hitting sound detector 52, and a spacer section 5 which comes into contact with the frame T in order to keep the distance between the hammer section 51 and the frame T optimal.
And 4.

In this embodiment, the hammer 51 is made up of five hammers arranged in a line, and reciprocates a little at a time so that the hammers do not strike the frame T at the same time. The tapping sound detector 52 is also provided with five sensors for detecting the tapping sound corresponding to each of the five hammers. If it can be found, the user can accurately recognize which position in the tunnel has an abnormality. Each of the five hammers does not need to be as heavy as the worker is currently using, as long as the sensor can capture the tapping sound, a small tapping sound that can not be felt by human ears A small and lightweight one that emits Furthermore, if the detection and recording of the tapping sound are performed by one member, the weight can be reduced, and the weight of the inspection device 5 can be reduced to 1 kg.
It would not be difficult to:

The spacer portion 54 is a wheel member such as a caster provided at each end of the hammer portion 51. The spacer portion 54 keeps the distance between the tip of the hammer and the frame constant and at the same time, according to the turning movement of the arm 4. The inspection device 5 can smoothly slide on the skeleton T.

FIG. 3 shows another example of the rotating member, wherein the length of the arm 4 is sufficiently longer than the distance between the vehicle body 2 and the frame T, and this is inclined as shown in the figure. Will exist. The arm 4 is biased by a spring in a direction approaching a right angle to the traveling direction of the vehicle, and can automatically follow the frame T even if there is some unevenness. Therefore, as in the example described above, the arm 4 does not need to expand and contract, and the structure is simple. However, if there are irregularities, the trajectory as set when the arm 4 rotates will not be traced, so that the tunnels that can be practically used are limited.

Furthermore, if a video camera or the like is attached to the inspection equipment 5 so that it can be photographed at all times or when abnormal noise is detected, it can be conveniently used for checking the position during repair work (not shown). ).

[0017]

As described in detail above, the inspection vehicle according to the present invention is a vehicle equipped with a device for searching for cracks or cavities in the skeleton by hammering sound, and the hammer portion that continues to reciprocate. And a hammer detector that detects a hammer generated when the hammer collides with the skeleton, a hammer recorder that records hammer data detected by the hammer detector, the hammer and the skeleton. Inspection equipment having a spacer portion that contacts the skeleton in order to keep the distance of the body optimal, is mounted on the vehicle body via a rotating member, and reciprocates at a predetermined rotation speed. The spacer is in contact with the frame regardless of the distance to the frame, and is a very advanced invention having the following effects.

(1) Inspection of an abnormal portion of a skeleton in a tunnel by a hammer, which could only be performed manually in the past, can be performed almost automatically. (2) Since the judgment of the hammering sound does not depend on human sensation, there is no individual difference, and training of workers is not required. (3) Scaffolding must be installed in the case of personnel, so conventional inspection work took too much time. However, in the case of the present invention, it is only a short time since the vehicle is only run.

[Brief description of the drawings]

1 (a) and 1 (b) show an inspection vehicle according to the present invention, wherein FIG. 1 (a) is a side view and FIG. 1 (b) is a front view.

FIG. 2 is a schematic side view showing an example of an inspection device for an inspection vehicle according to the present invention.

FIG. 3 is a schematic side view showing another example of the rotating member of the inspection vehicle according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inspection vehicle which concerns on this invention 2 Vehicle main body 3 Arm base 4 Arm 5 Inspection equipment 51 Hammer part 52 Hammer detector 53 Hammer recording part 54 Spacer part T frame

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D055 LA16 2F076 BB07 BD12 BE01 2G047 AA10 AB07 BC07 CA03 CA07 EA09 EA11 EA13 GA06 GA21 GJ02

Claims (1)

[Claims] 1. A vehicle equipped with a device for searching for cracks or cavities in a skeleton by hammering sound, wherein a hammer portion that continues to reciprocate and a hammering sound generated when the hammer portion collides with the skeleton. A tapping sound detector to detect, a tapping sound recording section that records tapping sound data detected by the tapping sound detector, a spacer section that contacts a skeleton to keep an optimal distance between the hammer section and the skeleton, Inspection equipment having the above is mounted on the vehicle body via the rotating member, and reciprocatingly rotating at a predetermined rotating speed, the spacer part comes into contact with the body regardless of the distance to the body An inspection vehicle, characterized in that: