JP2001033401A - Device for probing lining of concrete structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move an inspecting device for probing defects which possibly have occurred in the back surfaces of a concrete structure as bringing it into close and parallel contact with the concrete structure under a predetermined pressure. SOLUTION: This lining probing device is composed of a moving carriage 1 which travels along a concrete structure T, a detector 9 to be moved along the concrete structure T as being pressed against a surface to be probed (t) of the concrete structure T to detect defects present in the back of the concrete structure T, and a holding device H mounted on the moving carriage 1 to hold and bring the detector 9 into contact with the surface to be probed (t) during the measurement of the surface to be probed (t).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exploration apparatus for non-destructively exploring a defect that may have occurred on the back of a concrete structure such as a tunnel or a seawall.

[0002]

2. Description of the Related Art Concrete structures such as tunnels and seawalls may have cavities behind their walls due to spring water, land subsidence, and other various factors over a long period of time. The existence of such a cavity has a great effect on the deterioration of the strength of the concrete structure, and the detection of the cavity is indispensable to the maintenance of the concrete structure.

Therefore, exploration of the structure behind a concrete structure using electromagnetic waves has been conventionally studied, but it is very difficult to move the inspection device in parallel with the concrete structure at a predetermined pressure in the exploration. It is important that this point has been insufficient in the past and cannot be easily performed.

[0004]

The problem to be solved by the present invention is as follows.
An object of the present invention is to develop a device that can move an inspection device in parallel with a concrete structure at a predetermined pressure.

[0005]

According to a first aspect of the present invention, there is provided a concrete structure lining exploration apparatus, wherein a parallel holding portion (h1) supporting a detector (9) is directly attached to a tip portion of a boom portion (3). When installed, the `` moving trolley (1) and the lining exploration device for concrete structures having the holding device (H), the holding device (H) is mounted on the movable trolley (1) (2)
And the detector (9) is set up on the telescopic part installation base (2)
The telescopic part (h4) that presses and holds the detector (9) at a predetermined pressure on the detection surface (t) via the parallel holding part (h1) that comes into contact with (t), and the distal end part of the telescopic part (h4). It consists of a parallel holding part (h1) that is attached and makes the detector (9) contact the exploration surface (t), and expands and contracts the telescopic part (h4), adjusts the angle, turns, and further expands and contracts (h
Concrete structure along the traveling direction of the mobile trolley (1) due to the parallel holding action of the parallel holding part (h1) provided at the tip of (4)
The detector (9) held by the parallel holding portion (h1) can be pressed in parallel to an arbitrary wall surface (t) of (T) with a constant pressure. "

According to a second aspect of the present invention, there is provided a concrete structure lining exploration apparatus for supporting a detector (9) via a pressure holding section (h2) attached to a distal end portion of a telescopic section (h4). Department
When (h1) is attached to the telescopic part (h4), the `` mobile trolley (1)
In a lining exploration device for a concrete structure having a holding device (H), the holding device (H) is provided with a telescopic unit mounting table (2) mounted on a movable trolley (1), and a telescopic unit setting table (2). The telescopic part (h4) erected on the front and the parallel holding part (h1) attached to the tip of the telescopic part (h4) and bringing the detector (9) into contact with the exploration surface (t)
A pressure holding unit (h2) that presses and holds the detector (9) on the search surface (t) at a predetermined pressure via the detection unit (h2), and is attached to the pressure hold unit (h2), and connects the detector (9) to the search surface (t). ) To contact the parallel holding part (h1)
The expansion and contraction of the telescopic part (h4), the angle adjustment, the turning, and the parallel holding function of the parallel holding part (h1) provided on the tip side of the telescopic part (h4) further actuate the moving carriage (1). The detector (9) held by the parallel holding part (h1) can be pressed in parallel to a given wall surface of the concrete structure (T) along the running direction at a constant pressure. "

[0007] The lining exploration apparatus according to the present invention comprises a movable trolley (1) running along a concrete structure (T) and a concrete structure while being pressed against an exploration surface (t) of the concrete structure (T). (T) moving along (T), a detector (9) for detecting the defect (K) present behind the concrete structure (T), and mounted on the moving trolley (1), the exploration surface (t) During the measurement, since the detector (9) is configured to include a holding device (H) for contacting and holding the detector surface (t) with the exploration surface (t), the moving carriage (1) while operating the holding device (H)
Just run along the concrete structure (T),
Detectors at any angle on the exploration surface (t) of concrete structures (T) with complex shapes such as tunnels and seawalls
(9) It is possible to travel while keeping the contact surface parallel and in contact with a predetermined pressure.
Exploration behind (T) can be performed non-destructively.

[0008] In the case of claim 1, the contact of the detector (9) with the concrete structure (T) on the exploration surface (t) is determined by the expansion and contraction portion (h4).
In contrast, in the case of claim 2, the expansion and contraction portion is used.
(h4) or the expansion and contraction of the pressing and holding portion (h2) or both are simultaneously expanded and contracted.

[0009] Claim 3 relates to the telescopic part (h4) and the telescopic part installation table (2) of the concrete structure lining exploration apparatus according to Claim 1 or 2, and "the telescopic part (h4) is detected. A boom section (3) for moving the vessel (9) toward and away from the exploration surface (t) of the concrete structure (T), a boom base (23) for holding the boom section (3) in a tiltable manner, Tilting part (h5) for tilting the boom part (3)
And a rotating part for rotating the boom part (3) and the tilting part (h5).
(15), and the telescopic unit installation table (2) is
5) has a position adjusting unit (h6) for moving the mobile trolley (1) in a direction intersecting the traveling direction of the mobile trolley (1). "

In this case, the height, direction, direction, etc. of the inspection device (9) can be freely changed by operating the expansion and contraction portion (h4), and further, by operating the position adjustment portion (h6), Moving trolley
The exploration surface (t) of a concrete structure (T) with a complex surface shape that can change the position of the telescopic part (h4) with respect to (1)
This makes it easier to adapt the tester (9) to

[0011] Claim 4 relates to the case where the posture holding part (h3) is provided. "The expansion and contraction part (h4) and the parallel holding part (h1) or the expansion and contraction part (h4) and the pressing holding part (h2) are used. Attach the parallel holding part (h1) or the pressing holding part (h2) in the direction intersecting the running direction, and hold the detector (9) so as to be parallel to the search surface (t). The holding part (h3) is interposed. "

In this case, since the posture holding part (h3) exists, the degree of freedom is further increased by using the posture holding part (h3).
The contact conformity of the inspection device (9) to the exploration surface (t) of the concrete building (T) is improved.

According to a fifth aspect of the present invention, there is provided the lining exploration apparatus, wherein the holding device (H) equipped with the detector (9) is a movable carriage (1).
In this way, it is possible to perform inspections at a plurality of locations in one run, thereby further improving the work efficiency by a plurality of times. .

Claim 6 is a more detailed description of the pressure holding portion (h2) used in the concrete structure lining exploration device according to any one of claims 1 to 5, The holder (h2) follows the contact surface of the detector (9) without separating from the search surface (t) due to the unevenness of the search surface (t) of the concrete structure (T) and the unevenness of the vehicle running part. And a cantilever movable so that the detector (9) can be pressed against the search surface (t) at a predetermined pressure. "

[0015] According to this, the air cantilever-type pressing and holding portion (h2) expands and contracts in accordance with the unevenness of the exploration surface (t) of the concrete structure (T) and the unevenness of the vehicle traveling portion, and the inspection device.
Because (9) is moved, despite the presence of the irregularities,
The contact surface of the inspection device (9) can be made to contact and follow the probe surface (t) at a constant pressure without leaving the contact surface, thereby contributing to the improvement of the probe accuracy.

In a seventh aspect, the parallel holding portion (h1) used in the concrete structure lining exploration apparatus according to any one of the first to sixth aspects is further detailed.
1) is composed of a traveling direction adjustment unit (hy) that adjusts a direction parallel to the traveling direction of the detector (9), and a left / right direction adjustment unit (hx) that adjusts a direction perpendicular to the traveling direction. "Is".

According to this, even if the search surface (t) has irregularities, the traveling direction adjuster (hy) and the left-right adjuster (hx) tilt in the traveling direction and the left-right direction in accordance with the irregularities. As a result, the inspection device (9) can be always in close contact with and parallel to the search surface (t), and the search accuracy can be further improved.

Claim 8 relates to the protection function of the detector (9). "The sensors (39), (50), and (54) for detecting the movable parts are installed in the pressing holding part (h2) and the parallel holding part (h1). When the operating limit is approached, an alarm is sounded to notify the abnormality and to prevent damage to the detector (9), both the boom part (3) and the cantilever type pressure holding part (h2) Is automatically contracted. "

In this way, if an abnormal situation occurs, immediately or both of the boom section (3) and the cantilever type pressing and holding section (h2) are automatically contracted, and the detector (9) is automatically contracted. ) Damage can be prevented.

A ninth aspect of the present invention relates to a further improvement in the concrete structure lining exploration apparatus according to any one of the first to seventh aspects, which relates to "Exploration of the mobile trolley (1) and the concrete structure (T)". Travel direction detection sensor (51) that detects the distance to the surface (t)
Is mounted on a mobile trolley. "

According to this, if the mobile trolley (1) is caused to travel in accordance with the detection of the traveling direction detection sensor (51), the exploration surface (t) of the concrete structure (T) is twisted. The mobile trolley (1) can be automatically run parallel to the exploration plane (t).

Claim 10 is an example of the concrete structure (T), wherein "the concrete structure (T) is a tunnel".
It is characterized by things.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a partially cutaway side view of the device of the present invention.
The holding device (H) is mounted on the carrier of the movable trolley (1). The holding device (H) includes a device without the posture holding unit (h3) and a device with the posture holding unit (h3) .In this embodiment, the holding device (H3) is provided with the posture holding unit (h3). Will be described as a typical example. If there is no posture holding part (h3), press holding part (h2)
Will be installed directly at the tip of the telescopic part (h4).

The holding device (H) includes a parallel holding portion (h1), a pressing holding portion (h2), a posture holding portion (h3), a telescopic portion (h4), a tilting portion (h5),
Telescopic part installation base with rotating part (15) and position adjusting part (h6)
(2), and the telescopic part (h4) is composed of a boom part (3) and a boom base (23). Hereinafter, these will be sequentially described.

A position adjusting section (h6), which is a main mechanism of the telescopic section setting table (2), is a mechanism section for sliding the entire holding device (H) in a direction perpendicular to the traveling direction of the movable cart (1). so,
A pair of slide rails (12) disposed parallel to the loading platform of the movable trolley (1), a slide screw shaft (11) disposed in parallel between the pair of slide rails (12), mesh with the slide screw shaft (11). , A telescopic part installation base (2) that slides on a slide rail (12) in accordance with the rotation of the slide screw shaft (11), and the slide screw shaft
A drive motor (13) for operating (11) and a transmission mechanism (14) for transmitting the rotational force of the drive motor (13) to the slide screw shaft (11).

The telescopic part (h4) includes a boom part (3) and a boom part (3).
And a boom base (23) pivotally supporting a tilt cylinder (4) constituting a tilt portion (h5) to be described later. The lower end of the fixed cylindrical portion (3a) constituting a part of the boom portion (3) is pivotally attached to the boom base (23), and the tilting cylinder (4)
It is supposed to go up and down. Then, the fixed cylindrical portion (3
The arm (3b) enters and exits from the opening at the free end of (a) to extend and contract the entire length of the boom (3).

The rotating part (15) is disposed between the boom base (23) and the telescopic part installation base (2), and is attached to a part more than the boom base (23) and attached thereto. The tilting part (h5) is rotated together with the tilting part (h5). The boom base (23) is rotatably connected to a telescopic unit installation base (2) by a boom main shaft (16), and the turning unit (15) rotates around a boom main shaft (16). Radial thrust bearing (15a) that carries a load of the part above the boom base (23), a boom rotation motor (17) for rotating the boom base (23), and a boom rotation motor (17 )
And a transmission mechanism (18) for transmitting the rotational force of the motor.

One end of the tilting portion (h5) has a boom base (23).
The telescopic rod (4a) is pivotally attached to the other end, and the telescopic rod (4a) enters and exits from the other end to extend and contract the entire length of the tilting cylinder (4), and the fixed cylindrical part (3a)
And a hinge portion (3c) to which the tip of the telescopic rod (4a) is attached, the telescopic rod (4a) being moved in and out to extend and retract the entire length of the cylinder (4). The boom part (3) is configured to be moved up and down by being caused to do so.

The distal end of the arm portion (3b) is connected to a posture holding portion (h3), so that a portion above the posture holding portion (h3) is moved up and down. The posture holding part (h3) includes a mounting head (20) fixed to the arm part (3b), and a posture holding cylinder pivotally attached to a hinge part (20a) protruding from a lower end of the mounting head (20). (19), a pressing part mounting table (21) fixed to the mounting head (20), and one end of the base table (22) pivotally attached to the base table (22) via a hinge part (22a); As shown in the figure, the lever is pivotally attached to the pressing portion mounting base (21) via the hinge portion (22a), and the rod end (22
b) and a base (22) connected to the cylinder rod (19a).

The press holding portion (h2) has its lower end pivotally connected to the base table (22) via a hinge portion (22c), and a pair of cantilevers (5) forming a link and one cantilever (5). An actuator (6) attached to a pivot shaft (5a) that pivotally connects the cantilever (5), and a balancer (7) attached to the pivot shaft (5a) for canceling a load applied to the cantilever (5).
It is composed of The actuator (6) is of a pneumatic type in the present embodiment, and generates a rotational force on the pivot (5a) by supplying compressed air. Also, cantilever (5)
The cantilever rotation angle detection sensor (54) that detects the rotation angle of the cantilever is provided on the press holding unit (h2), detects the cantilever rotation angle, and folds the cantilever (5) when an abnormality occurs. It has become.

The parallel holding part (h1) is composed of a left-right direction adjusting part (hy) and a running direction adjusting part (hx). The horizontal adjustment part (hy) has a hinge part at the upper end of the pair of cantilevers (5).
(30a) and a horizontal suspension shaft (31) protruding from the center of the front end and the rear end of the fixed frame (30). (33) is suspended through the left and right swing frame (8), the traveling direction adjustment unit (hx) is a front and rear direction protruding from the center of both sides of the left and right swing frame (8) It is suspended on the suspension prop (40) via the longitudinal suspension shaft (42),
Measuring unit mounting frame (41) swinging back and forth
And a pair of left and right sliding contact plates (48) covering the upper surface thereof.

As described above, the fixed frame (30) is formed by assembling the frame into a rectangular shape, a left-right suspension column (31) projects from the center of the front end and the rear end, and the cantilever (5) extends from the lower surface.
A hinge part (30a) to which the upper end of each is pivotally protruded is provided at four places. Further, a pair of left and right horizontal support shafts (35) for adjusting a horizontal swing is mounted on the inner surfaces of the front end and the rear end. A pair of mounting projections (30b) are provided so as to protrude.

As will be described later, the left-right support shaft (35) is used to hold the left-right suspension arm (32) of the left-right swing frame (8).
Penetrates the left and right holding plate (34), which is suspended from the left and right sides.
8a) attached to the left and right pressing rollers (38) sandwich the left and right holding plate (34) from both sides, the left and right supporting shaft (35)
A pair of left-right pressing springs (3) disposed between the left-right pressure adjusting piece (37) screwed to the roller and the roller mounting portion (38a).
With the resilience of 6), the horizontal holding plate (34) is always in the center unless a force is applied to swing the horizontal swing frame (8) around the horizontal suspension shaft (33). Adjusted to be located.

A pair of left / right swing amount detection sensors (39) are attached to both sides of the left / right suspension column (31), and a left / right suspension arm (32) of the left / right swing frame (8) is provided. When the swing amount becomes equal to or more than a predetermined amount, an alarm signal for performing an obstacle avoiding exercise described later is output.

The left-right swing frame (8) is a frame assembled in a rectangular shape, and has an L-shaped left-right suspension arm (32) projecting from the center of both front and rear sides thereof. The upper end of the left-right suspension arm (32) is suspended by the left-right suspension support column (31) via the left-right suspension shaft (33) as described above. Then, as described above, the left-right suspension arm (32)
A left-right holding plate (34) is vertically suspended from the lower surface of the, and both sides thereof are held by a pair of left-right pressing rollers (38). A pair of front and rear suspension columns (40) are erected from central portions on both sides of the horizontal swing frame (8).

The front-rear suspension column (40) has a front-rear suspension shaft.
The measuring unit mounting frame (41) is suspended via the (42). The measurement unit mounting frame (41) is a frame connected via a connecting rod (41a), and the pair of front-back support shafts (43) is disposed inside the both sides along the side walls, The longitudinal pressing roller (44) of the longitudinal roller mounting piece (45) attached to the pair of longitudinal supporting shafts (43) is a longitudinal supporting column.
(40) is clamped from the front and rear, so that measurement is performed as long as the force for swinging the measurement unit mounting frame (41) around the front and rear suspension shaft (42) is not applied to the measurement unit mounting frame (41) as described above. The part mounting frame (41) is adjusted so that it is always located at the center. Then, the detector (9) is attached to the measuring section attachment frame (41) with a fastener (53).

This adjusting operation is performed by a front-rear pressure adjusting piece (47).
This is due to the resilience of a front-rear direction pressing spring (46) disposed between the front-rear direction roller mounting piece (45). The front-rear direction pressure adjusting piece (47), the front-rear direction roller mounting piece (45), and the front-rear direction pressing spring (46) are mounted on the front-rear direction support shaft (43).

The above-mentioned left-right pressure adjusting piece (37) is moved along the left-right supporting shaft (35), and the above-mentioned longitudinal pressure-adjusting piece (47) is moved along the front-back supporting axis (43). By sliding, the elastic force of the front-rear direction support shaft (43) and the left-right direction pressing spring (36) can be freely and individually adjusted.

Further, when the swing amount of the measuring unit mounting frame (41) around the suspension shaft (42) in the front-rear direction becomes a predetermined amount or more, a pair of front and rear outputs of an alarm signal for performing an obstacle avoiding movement described later. A direction swing amount detection sensor (50) is disposed before and after the front-rear direction hanging support column (40).

On the upper part of both side walls of the measuring part mounting frame (41), inclined parts (48) whose front and rear ends are obliquely inclined.
A pair of left and right sliding contact plates (48) having a) is provided, and the detector (9) is provided therebetween. Detector
Similarly to the sliding contact plate (48), the ceiling of (9) is formed so that its front and rear ends are obliquely inclined.

Further, a detector is provided between the sliding contact plates (48).
A rolling roller (49) is provided in front of (9), and a roller mounting portion (49a) is mounted on the top of the left-right suspension column (31). The detector (9) is a device for searching for a defect (K) that may have occurred behind the concrete structure (T) using electromagnetic waves.

When the concrete structure (T) is an elongated structure such as an embankment, the distance between the concrete structure (T) and the movable trolley (1) is measured. It is sensed that the bogie (1) can travel along the concrete structure (T), and if the concrete structure (T) is like a tunnel, it is sensed so that it can travel in the center of the concrete structure (T). A pair of traveling direction detection sensors (51) and a light (52) for illuminating a working position in a dark concrete structure (T) are provided.

Next, a case where the concrete structure (T) is a tunnel as shown in FIG. 8 will be described as an example. First, a case will be described in which the ceiling portion (X) of the concrete structure (T) is inspected along the concrete structure (T). Using the traveling direction detection sensor (51), the mobile trolley (1) is moved so as to be located at the center of the concrete structure (T), and then is folded down on the carrier of the mobile trolley (1) and falls down The telescopic part (h4) is caused vertically by actuating the tilt cylinder (4). Then, the drive motor (13) is operated to rotate the slide screw shaft (11), and the holding device (H) is set so that the detector (9) comes to the measuring position of the concrete structure (T).
Move the whole.

Subsequently, the boom rotation motor (17) is operated to rotate the rotation part (15), and the detector (9) is rotated so as to be directed in the axial direction of the concrete structure (T). Thereby, the traveling direction of the movable trolley (1) and the traveling direction of the detector (9) coincide with the axial direction of the concrete structure (T).

Next, the arm part (3b) of the boom part (3) is extended to some extent, and the detector (9) is positioned near the measuring position of the concrete structure (T). After that, the actuator
(6) is actuated to raise the cantilever (5) so that the detector (9) comes into contact with the measuring position of the concrete structure (T) with a predetermined force. Actuator (6) operates with balancer (7)
It works smoothly by the action of.

After doing so, the mobile trolley (1) is slowly run along the concrete structure (T). Detector
(9) is a concrete structure (T) with the traveling of the mobile trolley (1)
It moves while contacting the ceiling surface of the building, and searches for defects (K) due to electromagnetic waves. During traveling, the traveling direction detection sensor (51) constantly senses the traveling vehicle (1) so as not to leave the center line of the concrete structure (T). Also the detector
During the exploration by (9), the vicinity of the detector (9) is constantly illuminated by the light (52) and visually inspected for abnormalities.

The fine irregularities on the measurement line of the concrete structure (T) smoothly move over the inclined portion (48a) of the sliding contact plate (48) and the rolling roller (49), and the detector (9) moves. Go. Detector (9) or sliding contact plate with unevenness such that detector (9) is inclined in the front-back direction with respect to the traveling direction
When (48) gets on, the measuring section mounting frame (41) swings around the front-rear direction hanging shaft (42). As a result, the measuring unit mounting frame (41) is inclined with respect to the front-rear suspension column (40), so that the front-rear pressing roller (44)
The front and rear pressing springs (46) move in opposite directions before and after (0), respectively, and accordingly absorb the fluctuation of the distance between the front and rear pressing rollers (44).

When the vehicle has passed over the unevenness, the front-rear pressing roller (44) attempts to return to the original position by the resilience of the two front-rear pressing springs (46) bent as described above. The front and rear wall surfaces of the column (40) are pressed and clamped. As described above, the elastic force of the front-rear direction pressing springs (46) acts on the front-rear sway to always keep the detector (9) horizontal. Nevertheless, the detector (9) always contacts in parallel in the front-rear direction of the measurement line of the concrete structure (T) and moves with the traveling of the movable cart (1).

When the detector (9) or one of the sliding plates (48) rides on unevenness such that the detector (9) is inclined in the left-right direction with respect to the traveling direction, the left-right swing frame (8 ) Left and right suspension arm (32)
Swing around (33). As a result, the left-right suspension arm (32) is inclined with respect to the left-right suspension post (31),
The left-right pressing roller (38) moves to the left and right opposite sides of the left-right holding plate (34), respectively, and the left-right pressing spring (36)
To absorb the fluctuation of the distance between the left and right holding plates (34).

Then, when the vehicle moves over the unevenness, the left-right pressing roller (38) tries to return to the original position by the elastic force of the two left-right pressing springs (36) bent as described above. Press and hold the left and right wall surfaces of 34). The detector (9) tilted in the left / right direction by the elastic force of the bent left / right pressing spring (36) tries to return to the horizontal state. As a result, even if there are irregularities, the detector (9) is always in parallel in the left and right direction of the measurement line of the concrete structure (T) and moves in parallel with the traveling of the movable trolley (1). As described above, even if the unevenness for tilting the detector (9) in the front-rear direction or the left-right direction protrudes into the concrete structure (T), it smoothly advances over the concrete structure (T) and searches for the concrete structure (T). Can be performed.

However, in the case where the detector (9) is tilted beyond the allowable limit in the front-rear direction, if the detector (9) is tilted more than the allowable limit in the front-rear direction, if the unevenness exceeds the allowable limit, attempting to forcibly overcome the unevenness will result in damage to the entire apparatus. An alarm signal is generated from the direction swing amount detection sensor (50). Similarly, when the detector (9) inclines beyond the allowable limit in the left-right direction, an alarm signal is generated from the left-right swing amount detection sensor (39). When any of the alarm signals are generated, the actuator (6) is actuated immediately to collapse the cantilever (5) and, if necessary, to contract the boom (3), and the detector (9) is moved to the concrete structure ( Operate to separate from T). In this way, even if an abnormal situation occurs, the entire apparatus is not damaged.

When the cantilever (5) is depressed because the irregularities are abnormally large and cannot be dealt with by the above mechanism alone,
The cantilever angle detection sensor (54) detects this and generates an alarm signal, and at the same time, the cantilever (5) is folded and the boom section (3) is contracted.

After the search for the position (X) is performed over the entire measurement site of the concrete structure (T) in this way,
Alternatively, the upper side of the concrete structure (T) indicated by (-Y),
The lower part of the side shown by (Z) or (-Z) is searched. In this case, the tilting part (h5) is operated to depress the telescopic part (h4), and the actuator (6) is operated to operate the cantilever (5) as described above.
And the detector (9) is brought into contact with the concrete structure (T).

In this case, when the lower side of the side indicated by (Z) or (-Z) is searched, the detector (9) can be obtained only by the function of the tilting part (h5).
When it is not possible to make the contact with the inner peripheral surface (t) of the concrete structure (T) sufficiently, the posture holding cylinder (h3)
(19), the base table (22) is tilted with respect to the pressing section mounting table (21) about the hinge section (22a) as an axis, and the detector (9) is moved to the inner peripheral surface of the concrete structure (T) ( t).
Further, if necessary, the position of the detector (9) is adjusted by operating the position adjuster (h6). Note that the posture holding unit (h3) can be installed as needed, and the above embodiment is an example in which the posture holding unit (h3) is provided.

[0055]

According to the device of the present invention, the detector can be brought into contact with the exploration surface at a predetermined pressure only by moving the movable trolley along the concrete structure by the action of the holding device. Exploration behind objects can be performed non-destructively.

Further, the holding device is operated by constituting the holding device with a parallel holding portion, a pressing holding portion, a telescopic portion, a tilting portion, a rotating portion, a position adjusting portion and a posture holding portion in addition thereto. As a result, it is possible to travel while maintaining the contact surface of the detector parallel to the exploration surface of concrete structures with complicated shapes such as tunnels and seawalls at a free angle,
Exploration that has been difficult in the past can now be performed quickly and accurately.

Further, by forming the parallel holding portion with the traveling direction adjusting portion and the left / right direction adjusting portion, even if the search surface has irregularities, the inspection device is tilted in the traveling direction and the left / right direction in accordance with the irregularities. As a result, the inspection machine can always be brought into close contact with and parallel to the search surface, and the search accuracy can be further improved.

Also, if the traveling direction detection sensor is provided on the movable trolley, it is assumed that the search surface of the concrete structure is meandering simply by moving the movable trolley in accordance with the detection of the traveling direction detection sensor. The mobile trolley can also be automatically run parallel to the exploration plane.

[Brief description of the drawings]

FIG. 1 is a schematic side view, partially cut away, of the apparatus of the present invention.

FIG. 2 is a schematic front view of FIG.

FIG. 3 is a schematic plan view of FIG. 1;

FIG. 4 is a partially enlarged perspective view of a parallel holding portion holding a detector of the device of the present invention and a pressing holding portion below the parallel holding portion.

5 is a further enlarged perspective view of a parallel holding unit holding the detector of FIG.

FIG. 6 is a side sectional view of FIG. 5;

FIG. 7 is a front view of the half section state of FIG. 5;

FIG. 8 is a front view showing a measurement state using the apparatus of the present invention.

[Explanation of symbols]

 (T) ... concrete structure (t) ... exploration surface (K) ... defect (H) ... holding device (h1) ... parallel holding unit (h2) ... pressing holding unit (h3) ... posture holding unit (h4) ... expansion and contraction Part (h5)… Tilting part (h6)… Position adjusting part (hx)… Left and right direction adjusting part (hy)… Travel direction adjusting part (1)… Moveable trolley (9)… Detector (15)… Rotating part

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Hidemitsu Daito 3-3-22 Nakanoshima, Kita-ku, Osaka-shi Inside Kansai Electric Power Company (72) Inventor Rihito Oikawa 5--14-10 Nishitenma, Kita-ku, Osaka-shi Kinki Concrete Industry Co., Ltd. (72) Inventor Hiroyuki Iinuma 4-2-6 Kudankita, Chiyoda-ku, Tokyo Application Geological Co., Ltd. F-term (reference) 2D018 AA04 2G047 AA10 BC07 EA10 GA05 GA06 GJ02

Claims (10)

[Claims] 1. A lining exploration device for a concrete structure having a movable trolley and a holding device, wherein the holding device is installed on an extendable portion installed pedestal mounted on the movable trolley, and installed on the extendable portion installed pedestal. An expansion and contraction unit that presses and holds the detector at a predetermined pressure on the search surface via a parallel holding unit that contacts the search surface, and a parallel holding unit that is attached to the distal end of the expansion and contraction and makes the detector contact the search surface. Parallel to any wall of the concrete structure along the traveling direction of the mobile trolley by the expansion and contraction of expansion and contraction, angle adjustment, turning, and the parallel holding action of the parallel holding part provided at the tip of the expansion and contraction part A lining exploration device for a concrete structure, wherein a detector held by a holding portion can be pressed in parallel at a constant pressure. 2. A lining exploration device for a concrete structure having a movable trolley and a holding device, wherein the holding device comprises: a telescopic portion installation base mounted on the mobile trolley; A pressure holding unit that is attached to the distal end of the expansion and contraction unit and presses and holds the detector on the search surface with a predetermined pressure via a parallel holding unit that contacts the detector with the search surface; And a parallel holding portion for bringing the container into contact with the exploration surface. A detector for lining a concrete structure, characterized in that a detector held by a parallel holding part can be pressed in parallel to an arbitrary wall surface of the concrete structure along a plane at a constant pressure. 3. A boom section for extending and retracting a detector to and from a detection surface of a concrete structure, a boom base for vertically standing and holding the boom section in a tiltable manner, and a tilting section for tilting the elastic section. Part, and a rotation part for rotating the expansion part and the tilt part, and the expansion part installation base has a position adjustment part for moving the rotation part in a direction intersecting the traveling direction of the movable cart. The lining exploration device for a concrete structure according to claim 1 or 2, wherein: 4. A parallel holding part or a pressing holding part is tilted in a direction intersecting a traveling direction between the expanding and contracting part and the parallel holding part or between the expanding and contracting part and the pressing holding part, and the detector is moved with respect to the search surface. The lining exploration device for a concrete structure according to any one of claims 1 to 3, wherein a posture holding portion for holding the object in a parallel state is interposed. 5. The concrete structure lining exploration device according to claim 1, wherein a plurality of sets of holding devices equipped with detectors are mounted on the movable trolley. 6. The pressing and holding section follows the unevenness of the exploration surface of the concrete structure and the unevenness of the vehicle running section so that the contact surface of the detector follows the exploration surface without detaching from the exploration surface. The lining inspection system for concrete structures according to any one of claims 1 to 5, characterized in that the lining inspection system is configured by a cantilever movable so as to be able to press the surface of the concrete structure against the exploration surface. 7. A parallel holding unit comprising: a traveling direction adjusting unit for adjusting a direction parallel to a traveling direction of a detector; and a left and right direction adjusting unit for adjusting a direction perpendicular to the traveling direction. The lining exploration device for a concrete structure according to claim 1, wherein: 8. A sensor for detecting a movable part is provided on the pressing holding part and the parallel holding part. When approaching the movable limit, an alarm is sounded to notify an abnormality and a boom part and a boom part are provided to prevent damage to the detector. The concrete structure lining exploration apparatus according to any one of claims 1 to 7, wherein both or any one of the cantilever-type press holding portions is automatically contracted. 9. The concrete structure according to claim 1, wherein a detector for detecting a distance between the movable trolley and an exploration surface of the concrete structure is mounted on the movable trolley. Lining exploration equipment. 10. The lining exploration device for a concrete structure according to claim 1, wherein the concrete structure is a tunnel.