JP2024010541A - Filler inspection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of conventional technology, namely, to provide a filer inspection system that can perform the workmanship inspection of the filler filled in a strip-shaped connection space more easily than conventional technology.

SOLUTION: A filler inspection system of the present invention is a system for inspecting the finished shape of a filler filled in a belt-like adjoining space generated between adjacent plate-like members and is provided with a traveling body, a distance measuring means, and a finished shape determining means. Distance measuring means measures the surface height of one side line by irradiating a laser from one plate-like member adjacent to the other plate-like member to the line shape of the other plate-like member, and finished shape determining means calculates the height difference between the surface of the plate-like member and the surface of the filler from the surface height of the one side line and compares it with an allowable range to determine the finished shape of the filler as defective.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a filling material packed in a band-shaped space, and more specifically, to a filling material whose finished shape can be inspected by irradiating a laser beam in a line while traveling. It is related to inspection systems.

Most of Japan's land is mountainous and has steep terrain, so most roads built in rural areas are equipped with bridges. On the other hand, in urban areas, where countless structures are densely packed together, if new roads are planned there, elevated bridges and overpasses are required. Bridges are extremely important structures, without considering the social impact in the event of damage, and for this reason, they have been carefully designed based on the ``Roadway Bridge Specifications and Explanations'' (Japan Road Association), etc. and is constructed with high quality. While such high quality is required, social demands and advances in technology have led to a need to construct bridges more economically and in a shorter period of time.

The deck slabs that make up the superstructure of a bridge are naturally installed when a new bridge is constructed, but they may also be installed when an existing bridge is renovated. In recent years, repair work on existing bridges has become more frequent, and along with this, there has also been a movement to replace them with deck slabs that are easier to maintain. In any case, bridge construction requires rapid construction. For example, elevated bridges on expressways handle a huge amount of traffic, so it is important to complete the construction as soon as possible, considering the economic loss caused by suspension of service. Is required.

Due to the above-mentioned background, precast concrete slabs have come to be widely used for bridge decks. "Precast" here refers to the production of products and components in advance at a location different from the site (construction site), such as a factory or manufacturing yard. It is called "floor slab". Conventional cast-in-place concrete construction methods require the construction site to be occupied for a long period of time, from formwork installation to concrete pouring and curing, but in the case of precast concrete slabs, production is done at a factory. Because it is easy to install, the period of time the construction site is occupied can be shortened.

On the other hand, precast concrete slabs cannot be made into very large members because they must be transported on public roads from the manufacturing site to the construction site. Therefore, multiple precast concrete deck slabs are placed in the direction of the bridge axis (or in the direction perpendicular to the bridge axis), and a strip-shaped gap (hereinafter referred to as "joint space") is created between adjacent precast concrete deck slabs. It happens. Normally, this joint space is filled with concrete, mortar, etc. after placing the required amount of reinforcing bars, that is, forming joints to connect the precast concrete slabs. Until now, various improvement techniques have been proposed regarding the structure and construction method of this joint part. For example, Patent Document 1 proposes a joint structure that can be easily formed in a short period of time and at low cost.

Japanese Patent Application Publication No. 2012-225144

Precast concrete slabs are sometimes manufactured in factories, so their surfaces are flat with high precision. On the other hand, since concrete or the like used to fill the joint space is cast in place, it is inevitable that the material will be uneven to some extent. Therefore, it is common to inspect the shape and dimensions (i.e. finished form) of compacted concrete, etc. For example, the ``Guidelines for surface preparation for floor slab waterproofing (East Japan Expressway Co., Ltd.)'' stipulates that the level difference between the precast concrete floor slab and the filler section should be ``a smooth surface with no level difference of 3 mm or more.'' The inspection uses a mold gauge (a device that measures the shape by pressing a horizontal line of needles against an uneven surface). However, even if this gauge can measure the uneven shape, it cannot directly calculate the amount of level difference between the uneven surfaces, so it is necessary to separately apply a measuring device such as a caliper to the uneven shape of the gauge to calculate it. Therefore, inspecting the completed form of compacted concrete is laborious and takes a considerable amount of time, and it also places a heavy burden on inspectors, and there is a risk that measurement errors or defective areas may be overlooked. Furthermore, since the mold gauge is inspected by making direct contact with the concrete, the needles will dig into the concrete and cannot be inspected if the concrete is soft immediately after compaction. Therefore, the inspection must be carried out after waiting until the concrete has hardened, but if a defect occurs in the finished form, it is necessary to make corrections such as grinding the hardened concrete surface using a power machine such as a grinder, which requires a large amount of work. In addition to being labor-intensive, grinding also causes dust to be scattered around, creating an environmental problem.

An object of the present invention is to solve the problems faced by the prior art, that is, to inspect the finished shape of the filler filled in the band-shaped gaps (hereinafter referred to as "connection spaces") that occur between plate-shaped members. It is an object of the present invention to provide a filling material inspection system that can perform the inspection more easily than the conventional technology.

The present invention focuses on the fact that by irradiating a line-shaped laser onto both a flat precast concrete floor slab and a packed filler, the height difference between the two can be measured without directly touching the concrete. It is an invention based on an idea that has never existed before.

The filling material inspection system of the present invention is a system for inspecting the finished shape of the filler packed in the strip-shaped connecting space created between adjacent plate-like members, and includes a traveling body, a distance measuring means, and a finished shape judgment. It is equipped with the means. Among these, the traveling body is of a hand-pushed type or a self-propelled type and travels in the axial direction of the connection space. Further, the distance measuring means installed on the traveling body is a means for measuring distance based on the laser irradiated to the filler, and the finished shape determining means is a means for determining whether the finished shape of the filler is good or bad. The distance measuring means measures distances in a line in a direction substantially perpendicular (including perpendicular) to the traveling direction of the traveling body, and from a part of one adjacent plate-like member to a part of the other plate-like member. By irradiating the concrete with a laser, the "surface height of the first side line" including part of the two plate-like members and the filler material is measured without contacting the concrete. Then, the finished shape determining means calculates the height difference between the surface of the plate-like member and the surface of the filler material from the surface height of the first side line, and determines the finished shape of the filler material when the height difference exceeds a predetermined tolerance range. Judged as defective.

In the filling material inspection system of the present invention, the distance measuring means may include a left distance measuring means and a right distance measuring means. The left distance measuring means and the right distance measuring means are disposed apart from each other in a direction substantially perpendicular (including perpendicular) to the filling material in the traveling direction, and the left distance measuring means is located on a part of the plate-like member on the left side in the traveling direction. At the same time, the right ranging means irradiates the laser from a part of the plate-like member on the right side in the traveling direction to the filling material.

The filling material inspection system of the present invention shall be installed so that the left distance measuring means and the right distance measuring means can be slid in a direction substantially perpendicular (including perpendicular) to the filling material in the traveling direction. You can also do it.

The filling material inspection system of the present invention may be installed such that the distance measuring means can be slid up and down.

The filling material inspection system of the present invention may further include marking means. This marking means is a means for marking the surface of the filler (or plate-like member) when the finished form determining means determines that it is defective.

The filling material inspection system of the present invention may further include position measuring means and control means. The position measuring means is a means for measuring the position of the traveling object, and the control means is a means for storing defect information in a storage means. In addition, when the finished form determining means determines that the product is defective, the control means stores information on the defect along with the position measured by the position measuring means.

The filler inspection system of the present invention has the following effects.
(1) It is possible to quantitatively determine the quality of the finished product without relying on the inspector's experience or sense. Therefore, there is no need to secure a specific person such as a skilled engineer, and a large number of inspectors can be requested.
(2) Furthermore, the burden on the inspector is reduced, and inspections can be conducted more easily and in a shorter period of time than in the past. As a result, labor costs can be reduced and the construction period can be shortened.
(3) Furthermore, since the quality of the finished product is determined quantitatively, it is possible to reduce failures in detecting defective parts.
(4) Since the finished shape can be measured without direct contact with the concrete, inspection can be performed even on soft concrete immediately after compaction, and even if a problem occurs with the finished shape, the soft concrete can be simply re-leveled with a trowel, etc. It becomes possible to make corrections, and the time and effort required for correction work can be greatly reduced.
(5) Even if the plate-like member has a cross slope or a longitudinal slope, it can be measured.
(6) By casing the distance measuring means and other equipment necessary for measurement, measurements can be made without being affected by the weather.
(7) By using a satellite positioning system or the like, it is possible to run the vehicle unmanned and take measurements, which makes it possible to take measurements at night, for example, and to save on manpower.

(a) is a plan view schematically showing a joint space, and (b) is a partial sectional view schematically showing the joint space. FIG. 1 is a block diagram showing the main configuration of the filler inspection system of the present invention. (a) is a sectional view schematically showing a running body and each equipment mounted thereon, and (b) is a sectional view schematically showing the running body. (a) is a cross-sectional view schematically showing a situation in which the distance measuring means irradiates a laser, and (b) is a cross-sectional view schematically showing the surface height of one side line obtained by one scan of laser irradiation. FIG. 3 is a cross-sectional view schematically showing a situation in which laser irradiation is performed by the left distance measuring means and the right distance measuring means. (a) is a cross-sectional view schematically showing a situation where the left distance measuring means and the right distance measuring means irradiate the laser so as to cover the left side of one side line, and (b) is the left distance measuring means and the right distance measuring means FIG. 3 is a cross-sectional view schematically showing a situation in which the laser is irradiated so as to cover the right side of one side line. FIG. 3 is a cross-sectional view schematically showing a situation in which the left distance measuring means, the center distance measuring means, and the right distance measuring means irradiate laser so as to cover the entire one side line. FIG. 2 is a cross-sectional view schematically showing two distance measuring means attached to a horizontal support bar that can be slid vertically; and FIG. (a) is a cross-sectional view schematically showing the finished shape of the filler material with a bulge, (b) is a cross-sectional view schematically showing the finished shape of the filler material with a depression, and (c) is a cross-sectional view schematically showing the finished shape of the filler material with a convex step. A cross-sectional view schematically showing the finished shape of the resulting filler, and (d) a cross-sectional view schematically showing the finished shape of the filler with a concave step. FIG. 2 is a cross-sectional view schematically showing a filling material inspection system of the present invention in which a distance measuring means irradiates a laser toward the side.

An example of implementation of the filling material inspection system of the present invention will be described based on the drawings. Note that the present invention can be used in various cases in which filler is added to the connection space between plate-like members, but for convenience, in this case, filler is used to fill the "joint space" between adjacent precast concrete slabs. This will be explained using an example of narrowing down.

FIG. 1 is a diagram schematically showing a joint space FS of a precast concrete slab PC, in which (a) is a plan view seen from above, and (b) is a partial sectional view taken along a vertical plane. As shown in FIG. 1(a), since the precast concrete slab PC has a constant length in the direction perpendicular to the bridge axis, the joint space FS is also formed approximately linearly and with a constant length. For convenience, here, the longitudinal direction of the joint space FS (that is, the joint axis direction of the precast concrete slab PC, the vertical direction in the figure) is referred to as the "joint axis direction", and the horizontal direction perpendicular to the connection axis direction is referred to as the "joint axis direction". This is referred to as the "direction perpendicular to the joint axis."

As shown in FIG. 1(b), a joint space FS is formed by butting the left precast concrete floor slab PCL and the right precast concrete floor slab PCR. In addition, a joint bar PB is installed at the end of each precast concrete slab PC, and the filler is filled with the joint bar PB in the joint space FS. As this filling material, ordinary concrete is generally used, but various materials such as non-shrinkage mortar, fiber reinforced mortar, polymer mortar, etc. can be used depending on the shape and size of the joint space FS.

FIG. 2 is a block diagram showing the main configuration of the filler inspection system 100 of the present invention. As shown in this figure, the filling material inspection system 100 of the present invention includes a traveling body 101, a distance measuring means 102, a finished shape determining means 103, and further includes a marking means 104, a position measuring means 105, a control means 106, It can also be configured to include output means 107 and test information storage means 108.

Among the main elements constituting the filling material inspection system 100, the finished form determining means 103 and the control means 106 can be manufactured as dedicated devices, or can be made using a general-purpose computer device. This computer device is equipped with a processor such as a CPU, memory such as ROM and RAM, input means such as a mouse and keyboard, and a display, and includes a personal computer (PC), a server, a tablet PC such as an iPad (registered trademark), and a smartphone. It is composed of mobile terminals, etc. If a computer device equipped with a display is used, the display may be used as the output means 107.

The test information storage means 108 can use a storage device of a general-purpose computer, or can be constructed in a database server. When building a database server, it can be placed on a local network (LAN: Local Area Network), or it can be a cloud server that stores it via the Internet.

Hereinafter, each main element constituting the filler inspection system 100 of the present invention will be explained in detail.

(running body)
FIG. 3 is a diagram schematically showing the traveling body 101, in which (a) is a cross-sectional view showing the traveling body 101 and each equipment mounted thereon as seen in the joint axis direction, and (b) is a diagram showing the traveling body 101. FIG. As shown in this figure, the traveling body 101 can be configured to include a side plate 101A, wheels 101B, a horizontal support bar 101C, a vertical support bar 101D, a handle 101E, etc. direction). For example, the vehicle 101 can be equipped with a motor or an engine so as to be self-propelled, or can be manually operated using the handle 101E. In either case, the vehicle 101 travels by rotating the wheels 101B. Of course, various conventionally used moving techniques can also be used, such as using caterpillars instead of wheels.

Further, as shown in FIG. 3(b), the traveling body 101 can be equipped with a battery BT that supplies electricity to each piece of equipment, and a computer CT such as a personal computer (PC) or a tablet PC. As described above, it is preferable that the computer CT includes the finished form determining means 103 and the control means 106.

(Distance measuring means)
The distance measuring means 102 is installed on the traveling body 101 as shown in FIG. 1, and irradiates a laser beam in the direction of the filling material (downward in the figure). Therefore, as shown in FIG. 3(a), the traveling body 101 straddles the filler MT packed in the joint space FS (that is, the distance measuring means 102 is positioned directly above the filler MT). When traveling, the distance measuring means 102 can irradiate the filler MT and the precast concrete slab PC with a laser beam while moving in the direction of the connection axis. Further, the distance measuring means 102 determines the distance (hereinafter referred to as "the distance") from the distance measuring means 102 (in particular, the laser irradiation point) to the laser reflection point (that is, the surface of the filler MT or precast concrete slab PC) based on the irradiated laser. , herein referred to as the "surface distance" for convenience). For example, the distance measuring means 102 may receive the laser reflected from the surface of the filler MT or the precast concrete slab PC, and determine the surface distance from the laser irradiation time and the reflected laser reception time. Furthermore, by providing the function of grasping the laser irradiation direction, it is also possible to measure the three-dimensional coordinates of the laser reflection point based on the laser irradiation point. Alternatively, a conventionally used laser distance measuring device such as a "camera built-in laser displacement sensor (manufactured by Keyence Corporation)" can also be used.

FIG. 4A is a cross-sectional view schematically showing a situation in which the distance measuring means 102 irradiates a laser beam. As shown in this figure, the distance measuring means 102 irradiates a laser in a line while scanning in a direction substantially perpendicular (including perpendicular) to the traveling direction of the traveling body 101 (that is, in a direction perpendicular to the joint axis). . Further, the distance measuring means 102 irradiates a laser beam from a part of one adjacent precast concrete floor slab PC to a part of the other precast concrete floor slab PC. More specifically, the laser is irradiated so that the left precast concrete floor slab PCL is the starting point and the right precast concrete floor slab PCR is the ending point (of course, the reverse is also possible). Thereby, the entire surface of the filler material MT can be irradiated with the laser. For convenience, here, the laser range irradiated by the distance measuring means 102 in one scan is referred to as "one side line".

As described above, the distance measuring means 102 can determine the surface distance based on the irradiated laser. Therefore, as shown in FIG. 4(b), by laser irradiation of the first side line, a part of the surface of the left precast concrete slab PCL (the part on the right side in the figure), the entire surface of the filler MT, and the right precast concrete slab The surface distance of a part of the PCR surface (the left part in the figure) can be obtained, that is, the "surface height of one side line" which is the relative height of the surface (hereinafter referred to as "surface height"). You can ask for it.

While the traveling body 101 is traveling, the distance measuring means 102 periodically irradiates a laser and calculates the surface height for each side line. In other words, the surface height of one side line is determined at regular intervals in the axial direction of the joint. The surface height of one side line obtained by the distance measuring means 102 may be displayed on an output means 107 such as a display by the control means 106. Alternatively, the control means 106 may be configured to store the surface height of one side line in the inspection information storage means 108. At this time, it is preferable to associate (link) the position of the first side line, that is, the surface height of the first side line with its measurement position, and then store it in the inspection information storage means 108.

In order to obtain the position of the first side track, it is preferable to install a position measuring means 105 on the traveling body 101. This position measuring means 105 measures the traveling body 101 (in particular, the irradiation position of the distance measuring means 102) while traveling, and includes, for example, an odometer such as a linear encoder or a rotary encoder, or a satellite positioning system (GNSS). Various conventionally used positioning techniques, such as a satellite receiver (Global Navigation Satellite System), a tracking total station, etc., can be employed. When using an odometer, it is possible to measure the traveling distance of the traveling object 101 in the joint space FS of each lane, and when using a satellite positioning system or tracking type total station, the coordinates of the traveling object 101 can be directly measured. can do.

By the way, if the width of the filler MT (dimension in the direction perpendicular to the joint axis) is wide, the first side line irradiated by the distance measuring means 102 may not reach from the left precast concrete deck slab PCL to the right precast concrete deck PCR. . In this case, it is preferable that the traveling body 101 travels the entire length of the filler MT in the joint axial direction, shifts its position in the direction perpendicular to the joint axis, and then travels the entire length of the filler MT in the joint axial direction again. In other words, one side line covering from the left precast concrete floor slab PCL to the right precast concrete floor slab PCR can be obtained by two laser irradiations.

Alternatively, two or more distance measuring means 102 may be arranged apart from each other in the direction perpendicular to the joint axis. For example, as shown in FIG. 5, a left distance measuring means 102L and a right distance measuring means 102R can be installed on the traveling body 101 with an interval in the direction perpendicular to the joint axis. As a result, even if the width of the filler MT is wide to some extent, the running body 101 can run the entire length of the filler MT once, and one siding line covering from the left precast concrete deck slab PCL to the right precast concrete deck PCR can be created. That's what you get. Of course, when the two precast concrete slab PCs are not covered even if the two distance measuring means 102 are arranged, the traveling body 101 runs to cover one side track as much as possible, as shown in FIG. It is best to obtain one siding line that covers two precast concrete slab PCs by repeating the process twice or more. For example, in FIG. 6, first, as shown in (a), the left distance measuring means 102L and the right distance measuring means 102R irradiate the laser so as to cover the left side of one side line, and then as shown in (b). The left distance measuring means 102L and the right distance measuring means 102R irradiate laser beams so as to cover the right side of one side line, thereby measuring to cover one side line. Alternatively, as shown in FIG. 7, by arranging the left distance measuring means 102L, the center distance measuring means 102C, and the right distance measuring means 102R, these three (of course, four or more may be used) distance measuring means 102 can measure one side line. Laser irradiation can also be performed to cover the area.

As shown in FIG. 3(a), the distance measuring means 102 can be attached to a horizontal support bar 101C supported by a vertical support bar 101D. Further, as shown in FIG. 8, a structure may be adopted in which the vertical support bar 101D supports the horizontal support bar 101C so that the horizontal support bar 101C can slide up and down. In this case, by adjusting the height of the horizontal support bar 101C, the height of the distance measuring means 102, that is, the laser irradiation height can be adjusted, which is preferable.

Further, when two or more distance measuring means 102 are arranged, the distance measuring means 102 can be attached to the horizontal support bar 101C so as to be slidable substantially horizontally (including horizontally). While the traveling body 101 is running, the horizontal support bar 101C is arranged in the direction perpendicular to the joint axis, so by adjusting the horizontal position of the distance measuring means 102, the laser irradiation position can be adjusted to the left and right, which is preferable. becomes. In addition, when disposing one distance measuring means 102, the laser irradiation position can be adjusted to the left and right by adjusting the traveling position of the traveling body 101 (position in the direction perpendicular to the joint axis). Although there is not much merit in allowing the distance measuring means 102 to be slid substantially horizontally, it is of course possible to attach the distance measuring means 102 to the horizontal support bar 101C so as to be able to slide substantially horizontally (including horizontally).

(Means for determining finished form)
The finished shape determining means 103 is a means for determining whether the finished shape of the filler MT is good or bad based on the surface height of one side line obtained by the distance measuring means 102. As described above, the surface of the precast concrete slab PC is flat with high precision, but on the other hand, the filler MT packed in the joint space FS inevitably has some degree of unevenness. Furthermore, two adjacent precast concrete slab PCs are generally installed so that their surface heights are approximately the same. In other words, as shown in FIG. 9, if the surfaces of the left and right precast concrete deck slabs PC are used as reference surfaces, the unevenness of the filler material MT can be evaluated. FIG. 9 is a cross-sectional view schematically showing the finished shape of the filler MT, in which (a) shows the filler MT with a bulge, (b) shows the filler MT with a depression, and (c) shows a convex step. (d) shows a filling material MT with a concave step, and (d) shows a filling material MT with a concave step.

The procedure by which the finished shape determining means 103 determines the quality of the finished shape of the filler material MT will be described in detail. First, based on the surface height of the first side line, the largest height difference (hereinafter referred to as "maximum difference δ") between the surface height of filler MT and the surface height of precast concrete slab PC (hereinafter referred to as "reference height") ) is extracted. The surface height of the first side line includes the surface heights of the left precast concrete slab PCL and the right precast concrete slab PCR, and also includes the surface height of the filler MT, so extract this maximum difference δ. It is possible to do so. Then, the maximum difference δ is compared with the predetermined tolerance range, and if the maximum difference δ is within the tolerance range, the finished shape of the filler MT at that position is determined to be “normal”, and the maximum difference δ is within the tolerance range. If it exceeds the limit, the finished shape of the filler material MT is determined to be "defective". As for this tolerance range, when the surface height of the filler MT is higher than the reference height, the difference is a positive value, and when it is lower, the difference is a negative value, for example, -3 mm or more and 3 mm or less. , -2 mm or more and 1 mm or less.

Further, when the finished shape determining means 103 determines that the filler material MT is defective, the control means 106 stores information regarding the finished shape of the filler MT (hereinafter referred to as "inspection information") in the inspection information storage means 108. can do. Of course, even when the finished form determining means 103 determines that the product is normal, the control means 106 can also cause the inspection information storage means 108 to store the inspection information. This inspection information may include the quality of the finished product (defective/normal), the position of the first side line measured by the position measuring means 105 (the distance traveled by the traveling body 101, coordinates, etc.), the measurement time, etc. Can be done.

Furthermore, when the workpiece determining means 103 determines that the product is defective, the marking means 104 can mark the product. This marking means 104 is mounted on the traveling body 101, and is capable of marking with spray, chalk, etc. while the vehicle is moving. Specifically, when the finished form determining means 103 determines that the shape is defective, the control means 106 transmits an operation command to the marking means 104 at that timing, and accordingly, the marking means 104 marks the surface of the filler MT or the precast concrete floor. The markings are made on the surface of the PC plate.

(Other features)
The filling material inspection system 100 of the present invention has a function of outputting the inspection information stored in the finished form determining means 103 to a form, and inspecting the filling material MT based on the measurement data (surface height of one side line) of the distance measuring means 102. It can have a function of generating a three-dimensional model. Furthermore, a photographing means capable of recording a moving image while moving can be mounted on the traveling body 101, and a filling material MT determined to be defective by the finished form determining means 103 can be automatically corrected on the spot. A robot arm can also be mounted on the traveling body 101.

(Example of use)
An example of using the filler inspection system 100 of the present invention will be described. When the filler inspection system 100 is placed in a predetermined position, the inspector grasps the handle 101E and pushes the traveling body 101 in the joint axial direction. When the traveling body 101 travels, the distance measuring means 102 periodically irradiates a laser to measure the "surface height of the first side line", and the finished form determining means 103 determines the filler material MT based on the surface height of the first side line. Judging the quality of the finished product. When the finished form determining means 103 determines that the product is defective, the control means 106 causes the inspection information to be stored in the inspection information storage means 108 and at the same time causes the marking means 104 to mark it. This series of procedures is repeated for the joint spaces FS of all lanes (for example, 4 lanes in FIG. 1(a)), and the inspection is completed. After the inspection is completed, the filling material MT is repaired based on the markings of the marking means 104.

(Modified example)
Up to this point, the example in which the distance measuring means 102 irradiates the laser beam downward has been described, but in the filling material inspection system 100 of the present invention, the distance measuring means 102 irradiates the laser beam laterally, as shown in FIG. Alternatively, the distance measuring means 102 may irradiate the laser beam upward. In addition, the arrangement of the distance measuring means 102 can be changed, and depending on the situation, the distance measuring means 102 can be arranged so as to emit the laser downward, or it can be arranged so that the laser is emitted sideways. It is also possible to arrange the distance measuring means 102 in this way, or to arrange the distance measuring means 102 so as to irradiate the laser upward.

The filling material inspection system of the present invention can be used not only for filling materials packed into joint spaces of bridge deck slabs, but also for various filling materials packed into connecting spaces between plate-like members. Considering that the present invention provides a good structure, provides high-quality social capital (infrastructure), and also reduces the burden on inspectors and contributes to labor saving, it is not only industrially applicable but also It can be said that this is an invention that can be expected to make a significant contribution to society.

100 Filler inspection system of the present invention 101 Traveling body (of the filling material inspection system) 101A Side plate (of the traveling body) 101B Wheels (of the traveling body) 101C Horizontal support bar (of the traveling body) 101D Vertical support bar (of the traveling body) 101E Handle (of the traveling body) 102 Distance measuring means (of the filler inspection system) 102C Central ranging means (of the ranging means) 102L Left ranging means (of the ranging means) 102R Right ranging means (of the ranging means) 103 Form determining means (of the filling material inspection system) 104 Marking means (of the filling material inspection system) 105 Position measuring means (of the filling material inspection system) 106 Control means (of the filling material inspection system) 107 (of the filling material inspection system) ) Output means 108 Inspection information storage means (of the filler inspection system) BT Battery CT Computer FS Joint space MT Filler PB Joint reinforcement PC Precast concrete slab PCL Left side precast concrete slab PCR Right side precast concrete slab

Claims (6)

A system for inspecting the finished shape of a filling material packed into a band-shaped connecting space created between adjacent plate-like members, the system comprising:
a hand-pushed or self-propelled traveling body that travels in the axial direction of the connection space;
a distance measuring means installed on the traveling body and measuring distance based on a laser irradiated in the direction of the filler;
A finished shape determining means for determining whether the finished shape of the filler is good or bad,
The distance measuring means extends in a line in a direction perpendicular or substantially perpendicular to the traveling direction of the traveling body, and furthermore, from a part of one of the adjacent plate-like members to a part of the other plate-like member. By irradiating with a laser, the surface height of one side line including a part of the two plate-like members and the filler is measured,
The finished shape determining means calculates a height difference between the surface of the plate-like member and the surface of the filler from the surface height of the first side line, and when the height difference exceeds a predetermined tolerance range, the filler Determine the finished shape of the material as defective,
A filling material inspection system characterized by: The distance measuring means includes a left distance measuring means and a right distance measuring means arranged apart in a direction perpendicular or substantially perpendicular to the traveling direction,
The left distance measuring means irradiates a laser from a part of the plate-like member on the left side in the traveling direction to the filler material,
The right distance measuring means irradiates a laser from a part of the plate-like member on the right side in the traveling direction to the filler material.
The filling material inspection system according to claim 1, characterized in that: The left distance measuring means and the right distance measuring means are installed on the traveling body so as to be slidable in a direction perpendicular or substantially perpendicular to the traveling direction.
3. The filling material inspection system according to claim 2. The distance measuring means is installed on the traveling body so as to be able to slide up and down.
The filling material inspection system according to any one of claims 1 to 3, characterized in that: further comprising a marking means for marking the surface of the filler or the plate-like member when the finished shape determining means determines that the shape is defective;
The filling material inspection system according to claim 1, characterized in that: a position measuring means for measuring the position of the traveling body;
further comprising a control means for storing defect information in the storage means,
The control means stores defective information together with the position measured by the position measuring means when the finished form determining means determines that the workpiece is defective.
The filling material inspection system according to claim 1, characterized in that:

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