JP7124774B2 - Shape measuring device - Google Patents

Description

The present invention relates to a shape measuring device.

Conventionally, in the welding process, confirmation of the welding state (fillet) to confirm whether the weld joint part is reliably welded after welding, and the state of the planned welding part (groove shape) before the welding work It is common to perform work to confirm the

There are contact and non-contact methods for detecting the groove portion. The former is a method using a probe-type contact sensor. It has the drawback of not being applicable. Therefore, a laser scan sensor method that scans a laser in the width direction of the groove is attracting attention as a non-contact detection that can detect any shape or position.

Detection work using a laser scan sensor has traditionally been performed by a worker holding a laser displacement meter while measuring the welded part one by one with a measuring instrument, and displaying the results at another location or on a display held by another worker. The measurement conditions are adjusted by adjusting the measurement posture and changing the measurement conditions of the measuring equipment based on the results of checking each time with the device. Therefore, when the total length of the welded part to be detected is long or curved, or in a narrow or inclined environment where it is difficult for the operator to hold the measuring instrument in place, it is necessary for the operator to stably hold the measuring instrument. It is difficult to hold the measuring device, and the vibration of the hand supporting the measuring device has caused a problem that high-precision and stable detection cannot be performed.

On the other hand, techniques described in Patent Documents 1 and 2 are known as measurement mechanisms using a laser scan sensor, which is a measurement mechanism using a non-contact detection method.

Patent Literature 1 relates to a non-contact measurement sensor device using a laser, in particular, a measurement device for measuring the groove shape of the entire periphery of a large hydraulic iron pipe. Conventional manual measurement by multiple people requires a lot of labor and time due to poor measurement locations and poor posture. An automatic measuring device using a sensor is mounted on a trolley that runs along the welded joint of the iron pipe and measures it.

Patent Document 2 discloses a detection mechanism that is equipped with a copying roller having a predetermined tapered shape that enters into a bevel, and that has laser scan sensors arranged on both sides of the copying roller. is disclosed. By providing such a configuration, that is, a configuration in which the copying roller follows the groove so as to keep the detection position constant so as not to come off the groove, it is possible to easily and accurately detect the groove width and the amount of misalignment. It is possible.

JP-A-11-47932 Japanese Patent Application Laid-Open No. 2001-276974

However, in the technology disclosed in Patent Document 1, in order to measure a measurement portion having a specific predetermined shape such as a welded joint portion of a large penstock, a truck is placed along a rail provided in advance along the portion. It is self-propelled. Therefore, it is not possible to flexibly deal with measurement sites with various measurement environments and various angles of the measurement sites, such as sites where bevels and fillets are formed at construction sites, and to perform accurate measurements. Also, since it is specialized for welding joints of large penstocks, it does not require such flexible measurement.

Further, the technique disclosed in Patent Document 2 is a mechanism for accurately detecting when the groove width changes. However, at construction sites, it is necessary to detect not only grooves but also welds such as fillets formed at various positions and angles on steel structures. not considered as possible.

For example, the fillet has a portion formed obliquely due to the seam between the steel plates to be joined, but the configuration is not suitable for measuring such a portion, nor is it taken into consideration. In addition, in order to accurately grasp the shape of the detection site, it is necessary to accurately grasp the distance information not only in the width direction of the laser scan but also in the direction perpendicular to the width direction, but no such consideration is made. do not have.

The present invention has been made in view of the above problems, and its object is to stably measure the shape of a measurement object such as a groove or fillet formed in a steel structure before or after welding over the entire length. An object of the present invention is to provide a shape measuring device capable of performing accurate measurement.

In order to solve the above-described problems and achieve the object, a shape measuring device according to the present invention is a shape measuring device for measuring a shape of a measurement target formed in a steel structure before or after welding, comprising a plurality of a truck body that can run on a running surface by means of the wheels; a shaft portion that is provided on the truck body and extends in parallel with the traveling direction of the truck body; A guide rod having a rod member extending in a direction orthogonal to the traveling direction and a spherical portion provided at one end of the rod member and brought into contact with the measurement object, and a laser beam irradiated to the steel structure including the measurement object. a laser irradiating part that irradiates light; and a light receiving part that receives the reflected light of the laser beam emitted from the laser irradiating part and reflected by the steel structure including the measurement object; The laser irradiating part is defined as the axis of the bar member of the guide rod and the irradiation width center in the direction orthogonal to the traveling direction of the laser beam radiated from the laser irradiating part to the steel structure including the measurement target. are aligned with each other and rotatable about the shaft portion, and the shape measurement of the measurement object is performed while the spherical portion of the guide rod is in contact with the measurement object. It is characterized in that the detection is performed based on the light receiving result obtained by receiving the reflected light from the laser irradiation section toward the object and receiving the reflected light with the light receiving section.

Further, in the shape measuring apparatus according to the present invention, the guide rod may be provided with an elastic member that biases the spherical portion against the object to be measured.

Further, the shape measuring device according to the present invention is arranged on one side of the carriage body in the traveling direction, contacts the running surface on which the carriage body travels, and measures a predetermined amount according to rotational displacement based on the travel of the carriage body. It may have a rotary encoder for outputting a pulse with a width, and may be configured to output the light receiving result of the reflected light obtained by the light receiving unit to the outside according to the output timing of the pulse.

Further, in the shape measuring apparatus according to the present invention, the carriage body has a gripping portion that is gripped by an operator when the carriage body is caused to travel, and the gripping portion perpendicularly intersects the carriage body with the traveling direction. It may be positioned vertically above the rotary encoder when viewed in a direction parallel to the width direction of the carriage body.

Further, in the shape measuring device according to the present invention, the holding part may be positioned vertically above the rotary encoder when viewed from a direction parallel to the traveling direction of the carriage body.

Further, in the shape measuring apparatus according to the present invention, the guide rod and the laser irradiation unit are an adjusting mechanism capable of adjusting at least one of the width direction and the vertical up-down direction in the direction orthogonal to the traveling direction of the carriage body. may be provided.

Further, in the shape measuring apparatus according to the present invention, a display unit capable of displaying the shape data of the object to be measured based on the light reception result output to the outside is provided above the trolley body and detachable from the trolley body. may be provided as possible.

Further, the shape measuring apparatus according to the present invention may be configured such that the gripping portion gripped by the operator when causing the carriage body to travel can be changed in position with respect to the carriage body.

INDUSTRIAL APPLICABILITY The shape measuring apparatus according to the present invention can stably and accurately measure the shape of a measurement object such as a groove or a fillet formed in a steel structure before or after welding over the entire length.

FIG. 1 is a side view showing a schematic configuration of a shape measuring device according to an embodiment. FIG. 2 is a front view showing a schematic configuration of the shape measuring device according to the embodiment. FIG. 3 is a rear view showing a schematic configuration of the shape measuring device according to the embodiment. FIG. 4 is a vertical cross-sectional view of a part of the guide rod and the measuring part. FIG. 5 is an enlarged view of the vicinity of the groove during measurement by the shape measuring device. FIG. 6 is a cross-sectional view taken along line AA of FIG. FIG. 7 is a cross-sectional view along BB in FIG. FIG. 8 is a diagram showing a state in which the shaft member, holder, and operation bar have moved in the width direction. FIG. 9 is a diagram showing a case where the shape of a fillet is measured by a shape measuring device. FIG. 10 is an enlarged view of the vicinity of the fillet during measurement by the shape measuring device. FIG. 11 is a diagram showing a case where the attachment position of the grip portion of the operation bar with respect to the carriage body is changed. FIG. 12 is a block diagram showing configurations of a shape measuring device and a processing device. FIG. 13 is a diagram showing an example of screen display of the display operation unit. FIG. 14 is a flowchart showing an example of shape measurement control using the shape measuring device and the processing device according to the embodiment.

An embodiment of a shape measuring apparatus according to the present invention will be described below. It should be noted that the present invention is not limited by this embodiment.

FIG. 1 is a side view showing a schematic configuration of a shape measuring device 1 according to an embodiment. FIG. 2 is a front view showing a schematic configuration of the shape measuring device 1 according to the embodiment. FIG. 3 is a rear view showing a schematic configuration of the shape measuring device 1 according to the embodiment. FIG. 4 is a vertical cross-sectional view of a part of the guide rod 20 and the measuring part 30. As shown in FIG. FIG. 5 is an enlarged view of the vicinity of the groove 3 during measurement by the shape measuring device 1. FIG. FIG. 6 is a cross-sectional view taken along line AA of FIG. FIG. 7 is a cross-sectional view along BB in FIG.

As shown in FIG. 1, the shape measuring device 1 according to the embodiment includes a carriage body 10, a guide rod 20, a measurement section 30, an operation bar 40, a rotary encoder 50, a display operation section 60, and the like. Here, as shown in FIG. 2 and the like, the object to be measured by the shape measuring apparatus 1 according to the embodiment is the steel plate 2A and the steel plate 2B before butt welding is performed between the steel plate 2A and the steel plate 2B forming the steel structure. 2B will be described.

The carriage body 10 is composed of a pedestal portion 11, a stay portion 12, and the like. The pedestal 11 is provided with a plurality of wheels 13 that are brought into contact with the running surfaces 2a and 2b, which are the upper surfaces of the steel plates 2A and 2B, when the carriage body 10 is run on the steel plates 2A and 2B. The stay portion 12 includes a pair of side stays 12a and 12b erected on the rear side of the pedestal portion 11 in the traveling direction of the carriage body 10, and a pair of side stays 12a and 12b fixed to the upper ends of the side stays 12a and 12b perpendicular to the traveling direction. It is composed of an upper stay 12c and the like extending in the width direction, which is the direction in which the upper stay 12c extends.

The guide rod 20 is arranged on the front side of the carriage body 10 in the traveling direction, and is composed of a guide rod shaft member 21, a tip portion 22, a spring 23, and the like.

The guide rod shaft member 21 is made of a round bar-shaped shaft member elongated in a direction orthogonal to the traveling direction. The guide rod shaft member 21 is slidably held in the axial direction of the guide rod shaft member 21 (vertical direction in FIG. 4) by a guide rod holder 32 provided on the front surface of the measurement unit 30 in the advancing direction. It is

The tip portion 22 is made of metal such as steel, and as shown in FIG. and a spherical portion 22b forming the outer peripheral surface of the. A lower end surface 21a of the guide rod shaft member 21 is provided with a male threaded portion 21b. A flat portion 22a of the distal end portion 22 is provided with a screw hole 22c that can be screwed with the male thread portion 21b. The tip portion 22 is fixed to the lower end of the guide rod shaft member 21 by screwing the male screw portion 21b and the screw hole 22c.

Further, the guide rod 20 is provided with a spring 23 which is an elastic member for urging the tip portion 22 toward the groove 3 to be measured. The spring 23 has a hollow interior through which the guide rod shaft member 21 is inserted. The lower end of the spring 23 is in contact with the flat portion 22a of the tip portion 22. As shown in FIG. The upper end of the spring 23 is brought into contact with the lower surface 32a of the guide rod holder 32. As shown in FIG. By sandwiching and compressing the spring 23 between the tip portion 22 and the guide rod holder 32 , the tip portion 22 is urged toward the bevel 3 by the elastic force (restoring force) of the spring 23 . As a result, the spherical portion 22b of the guide rod 20 is biased toward the groove 3 by the spring 23 and is in contact with the groove 3. It absorbs the vertical vibration of the whole, and comparatively stable measurement becomes possible.

As shown in FIG. 1, the measurement unit 30 includes a housing 31 forming an outer shell of the measurement unit 30, a guide rod holder 32, a laser irradiation unit 33, a light receiving unit 34, and the like. is provided. Further, as shown in FIG. 1, a communication cable 80 is connected to the measurement unit 30 for communicating with a controller 120 (see FIG. 12), which will be described later.

A cylindrical guide rod holder 32 that holds the guide rod shaft member 21 is provided on the front surface 31 a of the housing 31 , which is the surface on the front side in the traveling direction. As shown in FIG. 4, the guide rod holder 32 is configured such that a bolt 91 is inserted through screw holes 311 and 321 formed in the front surface 31a of the housing 31 and the guide rod holder 32 and passing through the guide rod holder 32 in the direction of travel. It is fixed to the front surface 31a of the body 31 by bolts 91. As shown in FIG. The guide rod holder 32 has a through hole (not shown) through which the guide rod shaft member 21 can be inserted. Member 21 is held.

As shown in FIG. 1, the laser irradiation unit 33 is a line light source that irradiates _a laser beam L1 over a predetermined range in a direction perpendicular to the traveling direction, and is provided in the lower part of the housing 31 . As shown in FIG. ₅ , when the laser beam L1 is irradiated from the laser irradiation unit 33 toward the groove ₃ and the steel structure, the laser beam L1 _irradiated from the laser irradiation unit 33 is applied within the irradiation area La This is done with the bevel 3 positioned. In addition, the laser irradiation part 33 is arranged so that the axis AX of the guide rod shaft member 21 and the irradiation width center P in the irradiation area _La in the direction perpendicular to each other are aligned.

As shown in FIG. 1, the light receiving unit 34 is provided in the lower part of the housing 31 and forward of the laser irradiation unit 33 in the traveling direction. _The light receiving unit 34 receives the reflected light L2 of the laser light L1 emitted from the laser irradiation unit 33 and reflected by the groove ₃ and the steel structures (steel plates 2A and 2B).

The operation bar 40, which is a rod-shaped handle member, has an operation bar shaft portion 41 and a grip portion 42 gripped by the operator when the carriage body 10 is moved. A lower end surface 42a of the grip portion 42 is provided with a male thread portion 42b. Further, the upper end surface 41a of the operation bar shaft portion 41 is provided with a screw hole 41b that can be screwed with the male screw portion 42b. The grip portion 42 is fixed to the upper end of the operation bar shaft portion 41 by screwing the male screw portion 42b into the screw hole 41b.

The rotary encoder 50 is arranged on the rear side of the truck body 10 in the traveling direction, and has a peripheral surface 50a in contact with the traveling surface 2b on which the truck body 10 travels. A pulse with a predetermined width is output according to the displacement. Then, according to the _output timing of the pulse, the light receiving result of the reflected light L2 obtained by the light receiving unit 34 is output to the outside, for example, the controller 120 (see FIG. 12) of the processing device 100 (see FIG. 12) to be described later. output to As a result, even if the trolley body 10 is manually driven, the rotary encoder 50 in contact with the running surface 2b outputs a pulse at regular intervals, so the light reception result (measurement result) is obtained regardless of the running speed of the trolley body 10. Constant measurement becomes possible. If the rotary encoder 50 is rotatable as the carriage body 10 travels, a portion of the peripheral surface 50a of the rotary encoder 50 may be positioned above the bevel 3 in the width direction.

Further, the shape measuring device 1 according to the embodiment is such that the grip portion 42 of the operation bar 40 is positioned vertically above the rotary encoder 50 in a side view of the shape measuring device 1 as shown in FIG. ing. Specifically, the grip portion 42 of the operation bar 40 is rotated so that the rotary encoder 50 is positioned on the same line as the axis of the operation bar 40 extending in the vertical direction in a side view of the shape measuring device 1 in the width direction. It is more preferable to position it vertically above the encoder 50 . In this way, by arranging the grip portion 42 of the operation bar 40 vertically above the rotary encoder 50, the vertical flapping that the rotary encoder 50 receives from the traveling surface during traveling can be prevented by the work in which the grip portion 42 of the operation bar 40 is gripped. Depending on the person, it is possible to perform pulse output with high precision by pressing firmly.

The display operation unit 60 can display the shape data of the object to be measured based on the light reception result output to the outside, and is provided above the trolley body 10 so as to be detachable from the trolley body 10 . As a result, the operator can grasp the shape of the object to be measured obtained by the measurement from above using the display operation unit 60, and even if it is difficult to visually recognize the shape data of the object to be measured due to the limited space above. can be confirmed by removing the display operation part 60, and the operator can operate the trolley body 10 while looking at it at hand. Therefore, it is possible to perform work determination based on the measured shape in real time.

In addition, the display operation unit 60 may be adjustable in angle with respect to the carriage body 10. In this case, even if the upper space is limited, the display operation unit 60 can be operated from an oblique angle while being placed on the carriage body 10, for example. It becomes possible to confirm the measurement result of the unit 60 .

In the shape measuring apparatus 1 according to the embodiment, as shown in FIG. 2, the operator holds the grip portion 42 of the operation bar 40 while the spherical portion 22b of the guide rod 20 is in contact with the groove 3 to be measured. The carriage body 10 is held and manually moved in the direction of travel. Then, while the truck main body 10 is traveling in the traveling direction, the laser beam L1 is irradiated from the laser irradiation unit 33 toward the groove ₃ , and the reflected light L2 reflected by the groove ₃ and the steel structure is received. Light is received by the portion 34, and the shape of the groove 3 is measured based on the light reception result.

Further, the shape measuring apparatus 1 according to the embodiment moves the guide rod 20 and the measuring unit 30 in at least one of the width direction and the vertical direction, which are directions orthogonal to the traveling direction of the carriage body 10, so that the carriage body 10 is measured. An adjusting mechanism 70 capable of adjusting at least one of the width direction and the vertical direction of the guide rod 20 and the measuring part 30 is provided. The adjustment mechanism 70 includes a shaft member 71, a holder 72, a bracket 73, a guide member 74, and the like.

The shaft member 71 is in the shape of a round bar elongated in the direction of travel, and the front end in the direction of travel is connected to the rear portion of the measurement unit 30 in the direction of travel.

3 and 6, the holder 72 has a first holder portion 72a and a second holder portion 72b arranged side by side in the width direction, which is the direction perpendicular to the traveling direction. A pair of concave portions (not shown) along the peripheral surface of the shaft member 71 are formed on the surfaces 721a and 721b of the first holder portion 72a and the second holder portion 72b, which face each other in the width direction. ing. Further, the first holder portion 72a is provided with a pair of screw holes (not shown) that penetrate in the width direction and are arranged in the vertical direction via the recess portion. The second holder portion 72b has a pair of screw holes (not shown) on a surface 721b facing the first holder portion 72a in the width direction at positions corresponding to the pair of screw holes provided in the first holder portion 72a. bottomed screw holes are drilled.

Then, the rear end portion of the shaft member 71 is fitted into the recessed portion and sandwiched between the first holder portion 72a and the second holder portion 72b so that the pair of screw holes and the pair of screw holes are engaged. It is held in the holder 72 by tightening the two bolts 92 that are inserted through and.

The position of the rear end of the shaft member 71 held by the holder 72 is the position of the shaft member sandwiched between the first holder portion 72a and the second holder portion 72b by loosening the tightening of the two bolts 92. 71 can be adjusted by moving forward or backward in the direction of travel relative to holder 72 . Further, by adjusting this position, the position of the measurement unit 30 connected to the shaft member 71 and further the position of the guide rod 20 held by the guide rod holder 32 of the measurement unit 30 in the traveling direction with respect to the carriage body 10 are adjusted. be able to.

Further, in a state in which the shaft member 71 is sandwiched between the first holder portion 72a and the second holder portion 72b, by loosening the tightening of the two bolts 92, the axis extending in the same direction as the traveling direction of the shaft member 71 can be adjusted. It can be rotated around the center. By rotating the shaft member 71 in this way, the measurement unit 30 connected to the shaft member 71 and further the guide rod 20 held by the guide rod holder 32 of the measurement unit 30 rotate about the axis of the shaft member 71. , and rotates around this rotation axis.

The second holder portion 72b is provided with a through hole 722b that penetrates in the vertical direction and through which the operation bar shaft portion 41 of the operation bar 40 is inserted. A notch portion 724b extending in the vertical direction and communicating with the through hole 722b is provided on a surface 723b of the second holder portion 72b opposite to the first holder portion 72a side in the width direction. . The second holder portion 72b is provided with a pair of screw holes (not shown) arranged side by side in the vertical direction through the second holder portion 72b so as to intersect with the notch portion 724b.

The lower end portion of the operation bar shaft portion 41 is inserted into the through holes 722b, and tightened with two bolts 93 inserted through the pair of screw holes, so that the cutout portions 724b are aligned in the advancing direction. The second holder portion 72b is deformed so as to narrow the gap, and the operation bar shaft portion 41 is held by the holder 72 by being sandwiched between the inner peripheral surfaces of the through holes 722b.

The relative position of the operation bar shaft portion 41 and the holder 72 in the vertical direction can be determined by loosening the two bolts 93 and inserting the operation bar shaft portion 41 into the through hole 722b. By moving the operation bar shaft portion 41 or the holder 72 with respect to the operation bar shaft portion 41 upward or downward in the vertical direction, adjustment is possible.

Then, in a state in which the shaft member 71 is held by the holder 72, by moving the holder 72 in the vertical direction with respect to the operation bar shaft portion 41, the shaft member held by the holder 72 is interlocked with this movement. 71 moves in the vertical direction. As a result, the measurement unit 30 connected to the shaft member 71 also moves in the vertical direction, so that the vertical position of the measurement unit 30 can be adjusted.

3 and 7, the bracket 73 is provided with a through hole 731 that penetrates in the vertical direction and through which the operation bar shaft portion 41 of the operation bar 40 is inserted. A notch portion 733 extending in the vertical direction and communicating with the through hole 731 is provided on a surface 732 on the rear side of the bracket 73 in the advancing direction. Further, the bracket 73 is provided with a screw hole 734 penetrating in the width direction so as to intersect the notch 733 .

By tightening the bolt 94 inserted through the screw hole 734 while the operation bar shaft portion 41 is inserted through the through hole 731, the bracket 73 is deformed so that the widthwise interval of the notch portion 733 is narrowed. , the operation bar shaft portion 41 is sandwiched between the inner peripheral surfaces of the through hole 731 and held by the bracket 73 .

Note that the relative positions of the operation bar shaft portion 41 and the bracket 73 in the vertical direction can be determined with respect to the bracket 73 with the bolt 94 loosened and the operation bar shaft portion 41 inserted into the through hole 731. It can be adjusted by moving the operating bar shaft portion 41 upward or downward in the vertical direction.

The guide member 74 is fixed by four bolts 97 to the rear side surface 121c of the upper stay 12c in the advancing direction, holds the bracket 73, and guides the movement of the bracket 73 in the width direction. A hollow interior 741 is formed in the guide member 74 so as to surround four sides in the traveling direction and the vertical direction. An opening 743 extending in the width direction and communicating with the hollow interior 741 is provided on a surface 742 of the guide member 74 on the rear side in the advancing direction. The opening 743 is formed with a lower guide surface 74a and an upper guide surface 74b extending in the width direction and facing each other in the vertical direction.

A pair of screw holes 735 through which two bolts 95 are respectively inserted are provided in both ends of the bracket 73 in the width direction. Two square nuts 96 to be screwed with two bolts 95 are provided in the hollow interior 741 of the guide member 74 .

The bracket 73 is fixed to the guide member 74 by holding the pair of brackets 73 in a state in which the surface 736 of the bracket 73 on the front side in the traveling direction and the surface 742 on the rear side in the traveling direction of the guide member 74 face each other. Two bolts 95 passed through screw holes 735 are inserted into hollow interior 741 through openings 743 of guide member 74 . The bracket 73 is fixed to the guide member 74 by screwing together two bolts 95 and two square nuts 96 and tightening the two bolts 95 .

The movement of the bracket 73 in the width direction with respect to the guide member 74 is performed by loosening the tightening of the bolts 95 and inserting the two bolts 95 into the openings 743 to move the lower guide surface 74a and the upper guide surface 74b. This is possible by sliding the bracket 73 in the width direction while keeping the peripheral surfaces of the two bolts 94 in contact with at least one of them. Thereby, the relative position in the width direction between the guide member 74 and the bracket 73 can be adjusted. By adjusting the relative position in the width direction between the guide member 74 and the bracket 73 in this way, the position in the width direction of the operation bar 40 holding the operation bar shaft portion 41 on the bracket 73 can be adjusted. can be done.

Further, by moving the bracket 73 in the width direction with respect to the guide member 74 in a state in which the shaft member 71 is held by the holder 72 and the operation bar shaft portion 41 is held by the holder 72 and the bracket 73, In conjunction with this movement, the shaft member 71 and the holder 72 move in the width direction as indicated by the dashed line in FIG. As a result, the measuring unit 30 connected to the shaft member 71 also moves in the width direction, so that the measuring unit 30 and further the guide rod 20 held by the guide rod holder 32 of the measuring unit 30 move in the width direction. position can be adjusted.

In the shape measuring apparatus 1 according to the embodiment, the guide rod 20 and the measuring unit 30 are adjusted to the trolley body 10 by the adjustment mechanism 70 even in a measurement environment where the vertical or horizontal space of the trolley body 10 is limited. By adjusting the positions in the vertical direction and the width direction, the shape of the object to be measured can be measured.

FIG. 9 is a diagram showing a case where the shape of the fillet 4 is measured by the shape measuring device 1. As shown in FIG. FIG. 10 is an enlarged view of the vicinity of the fillet 4 during measurement by the shape measuring device 1. FIG. As shown in FIG. 9, when the object to be measured by the shape measuring apparatus 1 according to the embodiment is the fillet 4 formed by fillet welding the steel plate 2C and the steel plate 2D that constitute the steel structure, for example With the upper surface of the steel plate 2C as the running surface 2c, the wheel 13 of the trolley body 10 is brought into contact with the running surface 2c, and the shape measuring device 1 is installed on the steel plate 2C. Then, the positions of the guide rod 20 and the measuring part 30 in the vertical direction and the width direction are adjusted by the adjusting mechanism 70 so that the spherical surface portion 22b of the tip portion 22 of the guide rod 20 contacts the fillet 4. , and adjust the rotational position about the axis of the shaft member 71 . At this time, as shown in FIG. ₁₀ , the guide rod 20 and the measurement unit are arranged such that the axis AX of the guide rod shaft member 21 and the irradiation width center P of the laser beam L1 emitted from the laser irradiation unit 33 are aligned. 30 position is adjusted. Also, the spherical portion 22 b of the guide rod 20 is preferably brought into contact with the fillet 4 . As a result, fluctuations in the distance between the fillet 4 and the laser irradiation part 33 and the light receiving part 34 due to the vibration of the truck body 10 due to the unevenness of the running surface 2c of the steel plate 2C are suppressed, and the guide rod 20 is moved by the side surface 2d. By guiding the spherical portion 22b of the fillet 4, the fillet 4 can be accurately measured in the longitudinal direction.

Then, in the shape measuring apparatus 1 according to the embodiment, the worker manually grips the grip portion 42 of the operation bar 40 and moves the carriage body 10 while the spherical portion 22 b of the guide rod 20 is in contact with the fillet 4 . The vehicle is caused to travel in the direction of travel. Then, while the truck main body 10 is traveling in the traveling direction, the laser beam L1 is irradiated from the laser irradiation unit 33 toward the fillet ₄ , and the reflected light L2 reflected from the fillet 4 and the steel plates _2C and 2D is emitted. Light is received by the light receiving unit 34, and the shape of the fillet 4 is measured based on the light receiving result.

As described above, the shape measuring apparatus 1 according to the embodiment can measure the shapes of measurement objects having various shapes such as the bevel 3 and the fillet 4 with different measuring methods and different angles of parts. In particular, the optical axis of the guide rod 20 and the laser irradiation unit 33 are aligned, and the optical axis can be adjusted in conjunction with the adjustment of the rotational position of the guide rod 20. It is possible to perform laser measurement of a predetermined width while maintaining a constant positional relationship with respect to the tip 3 and the fillet 4, so that highly accurate measurement can be stably performed. In addition, the carriage body 10 does not travel automatically, but can be moved at an arbitrary speed by being pushed by an operator holding the grip portion 42 of the operation bar 40 . Therefore, even if vibration of the trolley body 10 is expected due to unexpected unevenness of the running surface, the speed of the trolley body 10 can be flexibly changed by the operator's judgment.

Further, the shape measuring apparatus 1 according to the embodiment is configured such that the mounting position of the grip portion 42 of the operation bar 40 with respect to the carriage body 10 can be changed. In the shape measuring apparatus 1 according to the embodiment, as shown in FIG. 11, the grip portion 42 is removed from the operation bar shaft portion 41, and a screw hole 71b is formed in a surface 71a of the shaft member 71 on the rear side in the traveling direction. and the male threaded portion 42b of the gripping portion 42, the gripping portion 42 can be fixed to the rear end of the shaft member 71. As shown in FIG. As a result, even in a measurement environment where the space above the trolley body 10 is limited, the position of the grip portion 42 of the operation bar 40 gripped by the operator when moving the trolley body 10 can be adjusted to the position of the trolley body. 10 can be changed to a position where it is easy to advance.

FIG. 12 is a block diagram showing configurations of the shape measuring device 1 and the processing device 100. As shown in FIG. As shown in FIG. 12 , the shape measuring device 1 includes a carriage body 10 provided with a measuring section 30 , a rotary encoder 50 , and a display operation section 60 . The processing device 100 comprises a small computer 110 , a controller 120 and a battery 130 . The display operation unit 60 of the shape measuring device 1 and the small computer 110 of the processing device 100 can communicate with each other by wireless communication such as Wi-Fi. The measuring unit 30 and the rotary encoder 50 of the shape measuring device 1 and the controller 120 of the processing device 100 are connected by a communication cable so as to be able to communicate with each other. Further, the display operation unit 60, the measurement unit 30 and the rotary encoder 50 of the shape measuring device 1 and the battery 130 of the processing device 100 are supplied with power from the battery 130 to the display operation unit 60, the measurement unit 30 and the rotary encoder 50 through power cables. connected for supply. Instead of power supply from the battery 130 of the processing device 100, a separate battery is provided in the carriage body 10 of the shape measuring device 1, and the display operation unit 60, the measurement unit 30 and the rotary encoder are supplied from the separately provided battery. 50 may be configured to provide power. Alternatively, the display/operation unit 60 may incorporate a battery, and the display/operation unit 60 may be operated by the built-in battery.

FIG. 13 is a diagram showing an example of a screen display of the display operation unit 60. As shown in FIG. As shown in FIG. 13, the screen of the display/operation unit 60 includes, for example, a shape display portion 61, a captured data number display portion 62, a capture start button 63, a capture stop button 64, a capture stop button 65, and , a forced capture button 66, and the like are displayed. Note that the capture start button 63, capture stop button 64, capture stop button 65, and forced capture button 66 are software keys that are input devices reproduced on the screen by software. A waveform 67 representing the shape of the object to be measured is displayed on the shape display section 61 as the shape data of the object to be measured. The captured data number display section 62 displays the number of captured data after the start of measurement. The import start button 63 is a button that the operator presses when starting to import data. The fetch stop button 64 is a button that the operator presses when discontinuing the data fetch. The capture stop button 65 is a button that the operator presses when stopping data capture. The forced capture button 66 is a button that the operator presses when capturing only the data at the current position of the shape measuring device 1 .

FIG. 14 is a flowchart showing an example of shape measurement control using the shape measuring device 1 and the processing device 100 according to the embodiment.

First, the operator installs the shape measuring device 1 on the object to be measured (step S1). Specifically, the positional relationship between the shape measuring device 1 and the object to be measured is visually confirmed so that the spherical portion 22b of the guide rod 20 of the shape measuring device 1 is in contact with the object to be measured. While viewing the waveform 67 displayed on the shape display unit 61 , the shape measuring apparatus 1 is installed on the object to be measured so that the shape of the object to be measured is displayed in the center of the display unit 61 . At this time, when the operator presses a forced import button 66 displayed on the display operation unit 60, only the data at the current position of the shape measuring device 1 is imported, and the shape display unit 61 displays the data of the object to be measured. A waveform 67 showing the shape may be displayed.

Next, the operator sets measurement conditions (step S2). Specifically, the measurement conditions are input from the display/operation unit 60 of the shape measuring apparatus 1, and the input measurement conditions are output from the display/operation unit 60 to the small computer 110 of the processing device 100 by wireless communication.

Next, measurement is started (step S3). Specifically, the operator presses the capture start button 63 displayed on the display operation unit 60 to start the capture. _{In other} words, when the button is pressed, the laser irradiation unit 33 irradiates the laser beam L1 toward the object to be measured, and the light receiving unit 34 receives the reflected light L2 reflected from the object to be measured and the steel structure to obtain data.

Next, the operator manually runs the shape measuring device 1 to acquire data (step S4). Specifically, the operator grips the gripping portion 42 of the operation bar 40 of the shape measuring device 1 and pushes the carriage body 10 to move the carriage body at an arbitrary speed along the longitudinal direction of the object to be measured. 10 is run on the running surface of the steel structure. Then, while the trolley body ₁₀ is running on the running surface, the laser beam L1 is emitted from the laser irradiation unit 33 toward the object to be measured, and the reflected light L2 _reflected from the object to be measured and the steel structure is received by the light receiving unit 34. to receive light. Then, the light receiving result of the light receiving unit 34 is output to the controller 120 of the processing device 100 in accordance with the pulse output timing from the rotary encoder 50 . The light reception result output to the controller 120 is processed by the small computer 110 of the processing device 100 into shape data such as a waveform representing the shape of the object to be measured. Then, the processing result of the small computer 110 is output from the small computer 110 to the display operation unit 60 by wireless communication, and the shape display unit 61 of the display operation unit 60 outputs the waveform representing the shape of the measurement object as the shape data of the measurement object. 67 is displayed. When acquiring data, be careful not to let the rotary encoder 50 leave the running surface. Also, be careful not to disturb the waveform 67 displayed on the shape display section 61 of the display operation section 60 . Furthermore, care should be taken so that the spherical portion 22b of the guide rod 20 of the shape measuring device 1 does not leave the object to be measured.

Next, the measurement ends (step S5). Specifically, when the desired length of the shape of the object to be measured is measured in the longitudinal direction, the operator presses the capture stop button 65 displayed on the display operation unit 60 to end the data capture. to finish importing data.

1 shape measuring devices 2A, 2B, 2C, 2D steel plates 2a, 2b, 2c running surface 2d side surface 3 groove 4 fillet 10 carriage body 11 base portion 12 stay portion 13 wheel 20 guide rod 21 guide rod shaft member 21a lower end surface 21b Male screw part 22 Tip part 22a Flat part 22b Spherical part 22c Screw hole 23 Spring 30 Measurement part 31 Housing 32 Guide rod holder 33 Laser irradiation part 34 Light receiving part 40 Operation bar 41 Operation bar shaft part 41a Upper end surface 41b Screw hole 42 Grip part 42a lower end surface 42b male screw portion 50 rotary encoder 50a peripheral surface 60 display operation portion 61 shape display portion 62 captured data number display portion 63 capture start button 64 capture stop button 65 capture stop button 66 forced capture button 70 adjustment mechanism 71 shaft member 71a surface 71b screw hole 72 holder 72a first holder portion 72b second holder portion 73 bracket 74 guide member 74a lower guide surface 74b upper guide surface 80 communication cable 91, 92, 93, 94, 95, 97 bolt 96 Square nut 100 Processing device 110 Small computer 120 Controller 130 Battery 311, 321, 734, 735 Screw holes 722b, 731 Through holes 724b, 733 Notch 741 Hollow interior 743 Opening

Claims (8)

A shape measuring device for measuring a shape of a measurement object formed in a steel structure before or after welding,
a trolley body having a plurality of wheels and capable of traveling on a running surface with the wheels;
a shaft portion provided on the bogie body and extending in parallel with the traveling direction of the bogie body;
a guide rod having a rod member provided on the shaft portion and extending in a direction orthogonal to the traveling direction and a spherical portion provided at one end of the rod member and brought into contact with the measurement object;
a laser irradiation unit that irradiates the steel structure including the measurement target with a laser beam;
a light receiving unit that receives the reflected light of the laser beam emitted from the laser irradiation unit and reflected by the steel structure including the measurement target;
has
The guide rod and the laser irradiating section are arranged in a direction perpendicular to the traveling direction of the laser beam irradiated from the axis of the bar member of the guide rod and the laser irradiating section to the steel structure including the measurement target. arranged so that the center of the irradiation width coincides and is configured to be rotatable about the shaft,
The shape measurement of the measurement object is performed by irradiating a laser beam from the laser irradiation unit toward the measurement object with the spherical portion of the guide rod in contact with the measurement object, and measuring the reflected light as the measurement object. A shape measuring device characterized by performing measurement based on a light receiving result obtained by light receiving at a light receiving part. 2. The shape measuring apparatus according to claim 1, wherein the guide rod is provided with an elastic member for biasing the spherical portion against the object to be measured. A rotary encoder is provided on one side of the truck body in the direction of travel, contacts the running surface on which the truck body travels, and outputs a pulse of a predetermined width according to the rotational displacement caused by the running of the truck body. and
3. The shape measuring apparatus according to claim 1, wherein the light receiving result of said reflected light obtained by said light receiving unit is output to the outside according to the output timing of said pulse. The trolley body has a grip portion that is gripped by a worker when the trolley body is driven, and the grip portion moves the trolley body from a direction parallel to the width direction of the trolley body orthogonal to the traveling direction. 4. The shape measuring device according to claim 3, wherein the shape measuring device is positioned vertically above the rotary encoder. 5. The shape measuring apparatus according to claim 4, wherein the holding portion is positioned vertically above the rotary encoder when viewed from a direction parallel to the advancing direction of the carriage body. 1 to 4, wherein the guide rod and the laser irradiation unit are provided with an adjustment mechanism capable of adjusting at least one of a width direction and a vertical up-down direction in a direction orthogonal to the advancing direction of the carriage body. 6. The shape measuring device according to any one of 5. A display unit capable of displaying the shape data of the object to be measured based on the light reception result output to the outside is provided above the trolley body so as to be detachable from the trolley body. 7. The shape measuring device according to any one of 3 to 6. The shape measuring device according to any one of claims 1 to 7, wherein a grip portion gripped by an operator when the carriage body is caused to travel can change its position with respect to the carriage body. .

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