JP2011064485A - Device of explicitly indicating position under line - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and low-cost device of explicitly indicating a position under the line that facilitates handling, and also improves workability of explicitly indicating the position under the line. <P>SOLUTION: The device includes: a casing 20 having the upper surface opened over the entire surface; a reference string 30 stretched between upper edges of facing short-length walls 21 of the casing 20; and a cord 50 as a verticality indication means provided at the casing 20 and indicating the vertical direction in which a linear body is overlapped with a power transmission line 90 stretched outdoors in plan view. The casing 20 includes a mirror body 40 capable of reflecting the reference string 30 and a bubble level 70 attached to the casing 20 perpendicularly to the extension direction of the reference string 30. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an underline clarification device used for appropriately clearly specifying a position immediately below an erected line such as a power transmission line or an optical fiber cable.

  2. Description of the Related Art Conventionally, an underline clarification device as described in Patent Literature 1 (vertical downward position detection device in Patent Literature 1) is known. This line-under-clarification device clearly indicates the position immediately below the power transmission line so that various workpieces are provided away from the power transmission line. The specified position is set as a reference position, and the workpiece is placed outside a position away from the reference position by a preset distance.

  Such a line demonstrator includes a cylindrical casing having an open upper surface, a hairline constructed between the upper edges of the annular walls facing each other of the casing, and a transmission line that keeps the casing horizontal. A housing moving mechanism for moving the housing forward and backward in the crossing direction, an image sensor including a CCD camera for visually recognizing the power transmission line via the hairline, a hairline and a power transmission line detected by the image sensor, And a pair of tripods that support these components, and a weight suspended from the center of the bottom of the housing.

  Then, after installing such an underline clarification device at a position almost directly below the target transmission line in a state where the casing maintains a horizontal posture, the casing is rotated about the vertical axis while looking at the monitor. In addition, the state where the power transmission line overlaps with the hairline is found on the monitor by moving forward and backward in the direction crossing the power transmission line. In the overlapping state, the position where the weight points downward is the position directly below the transmission line.

JP 2000-329555 A

  By the way, the underline clarification device described in Patent Document 1 includes a moving mechanism that movably supports a casing, an image sensor that includes a CCD camera, a monitor that outputs an image read by the image sensor, and further these devices. This is a very heavy equipment equipped with a pair of supporting tripods and the like, and is not only extremely expensive but also difficult to carry and lacks mobility.

  In addition, the collinear clarification device must be installed so that the casing maintains a horizontal posture in a site where the scaffold is poor, and there is a problem that the workability of the preparatory work on the site is inferior.

  Therefore, when it is found that the installation position of the underline clarification device is inappropriate, it must be re-installed at a different location, which is very troublesome. It is said that a lot of on-site experience is necessary to carry out such troublesome preparation work.

  The present invention has been made to solve the conventional problems, can be handled easily and at low cost, and can be handled very easily, and can greatly improve the workability of line drawing. The aim is to provide an underline explicit device.

  The present invention is for solving the above-mentioned problem, and is a linear shape that is stretched between a casing whose upper surface is opened over the entire surface, and upper edges of mutually opposing wall portions of the casing. A position directly below the erection line, which is provided with a body and a vertical indicating means attached to the casing in a state in which the linear body overlaps with a erection line laid in the field in a plan view The apparatus includes a mirror surface capable of projecting the linear body, and a horizontal state detecting means for detecting a horizontal state of the mirror surface, and the horizontal state The detection means is a bubble level attached to the casing.

  According to such a configuration, the mirror surface provided in the casing becomes horizontal by setting the attitude of the casing so that the bubbles of the bubble level are positioned at the center of the level. In this state, the viewer visually recognizes the mirror surface from the end side of the linear object, and grasps the line demonstrator at a position where the linear object itself and the mirror image of the linear object and the construction line reflected on the mirror surface overlap each other. Move. The position indicated by the vertical pointing means in a state where the linear body itself and the mirror images of the linear body and the erection line overlap each other is the position immediately below the erection line.

  Thus, after setting the attitude of the housing based on the bubble level as the horizontal state detecting means, the observer moves so that the linear body overlaps with the image of the linear body and the construction line reflected on the mirror surface. With this simple operation, it is possible to properly indicate the line under the erection line, and to improve the workability of the line underline operation.

  In addition, the line clarification device includes only a housing, a linear body stretched across the upper surface opening of the housing, a vertical indicating means attached to the housing, a mirror surface, and a bubble level. Since it has a simple structure, a moving mechanism that supports the housing movably, an image sensor equipped with a CCD camera, a monitor that outputs an image read by the image sensor, and a pair of supporting these Compared with a very heavy conventional line demonstrator equipped with a tripod or the like, it can be made extremely simple, and a significant reduction in manufacturing cost is achieved.

  Moreover, as for the line | wire underline indication apparatus which concerns on this invention, it is desirable that the said vertical instruction | indication means is a weight suspended from the said wall part via a string.

  According to such a configuration, after setting the mirror surface provided in the housing based on the bubble level horizontally, the linear body and the image of the linear body and the construction line reflected on the mirror surface overlap each other. In the state, the position directly below the erection line is clearly indicated by the position on the ground pointed by the weight.

  Moreover, it is desirable that in the line clarification device according to the present invention, the vertical instruction means is a light source that emits a light beam toward a downward direction perpendicular to the mirror surface in the housing.

  According to such a configuration, after setting the mirror surface provided in the housing based on the bubble level horizontally, the linear body and the image of the linear body and the construction line reflected on the mirror surface overlap each other. In the state, the position immediately below the erection line is clearly indicated by the position on the ground to which the light emitted from the light source is applied.

  In addition, the present invention provides a housing whose upper surface is opened over the entire surface, a linear body stretched between upper edges of opposing wall portions of the housing, and the linear body is outdoors. A line-under-clarification device for specifying a position directly below the installation line, which is provided with a vertical indicating means attached to the casing and pointing in a vertical direction in a state where the installation line overlaps with the installation line in plan view. The housing includes a mirror surface capable of projecting the linear body, and a horizontal state detection unit that detects a horizontal state of the mirror surface, and the horizontal state detection unit includes the line in the housing. A reference line attached so as to extend downward from the outer surface side of the wall portion to which the shape body is fixed perpendicular to the mirror surface, and the vertical indicating means suspends a weight and the weight A string body, so that the string body can coincide with the reference line And it is characterized in that the thus provided to the housing.

  According to such a configuration, the direction in which the reference line attached to the housing extends coincides with the direction in which the string body extending under the weights extends as seen from the viewing direction (appears to be in a straight line). Thus, the mirror surface becomes horizontal by adjusting the posture of the casing. In this state, the mirror surface is visually recognized from the end side of the linear body, and the observer moves to a position where the linear body itself, the linear body and the construction line reflected on the mirror surface overlap each other. The position indicated by the weight in the state where the linear body itself, the linear body reflected on the mirror surface, and the construction line overlap each other is the position directly below the construction line.

  As described above, after setting the posture of the housing by a simple operation in which the direction in which the reference line extends and the direction in which the string body extends match, the linear body, the linear body reflected on the mirror surface, and the video of the construction line With the simple operation that the observer moves so as to overlap with each other, the underline of the erection line can be appropriately specified by the direction indicated by the weight.

  The underline clarification device is also hung on a casing, a linear body stretched across the upper surface opening of the casing, and a reference line and a string as a vertical indicating means attached to the casing. Since it has a simple structure consisting of a held weight, a moving mechanism that supports the housing in a movable manner, an image sensor equipped with a CCD camera, a monitor that outputs an image read by the image sensor, Can be made extremely simple compared to a very heavy conventional line-under-the-line display device having a pair of tripods for supporting them, and a significant reduction in manufacturing cost is achieved.

  Further, on the mirror surface of the line clarification device according to the present invention, a reference line is provided at a position directly below the linear body in a direction in which the linear body extends in a state where the mirror surface is maintained in a horizontal state. It is desirable to be drawn to a mirror surface.

  According to such a configuration, the mirror surface becomes horizontal by visually recognizing the mirror surface from the end side of the linear body and matching the image of the linear body reflected on the mirror surface with the reference line. Therefore, the horizontal state of the mirror surface is more accurately ensured by the double check by using the vertical setting means together with the horizontal setting of the mirror surface.

  According to the underline clarification device according to the present invention, the structure is extremely simple compared to the conventional one while ensuring the excellent function that the underline of the erection line can be easily and properly performed with simple observation work. Therefore, it can greatly contribute to the reduction of the manufacturing cost.

1 is an exploded perspective view of a line clarification device according to a first embodiment of the present invention. It is an assembly perspective view of the line clarification device shown in FIG. It is explanatory drawing of the side view which shows the state in which the observer is observing so that the position directly under a power transmission line may be specified. It is a perspective view which shows the line-under-demonstration apparatus ahead of an observer's eyes at the time of observation shown in FIG. It is a perspective view which shows the line demonstrator of 2nd Embodiment which concerns on this invention. It is a perspective view which shows the line clarification apparatus of 3rd Embodiment which concerns on this invention, and has shown the state by which the thread | yarn support pillar was set to the standing posture. The thread body support column of the line clarification device shown in FIG. 6 shows a state where the posture is set to the recumbent posture. It is explanatory drawing for demonstrating the attitude | position change operation of a thread support pillar, (A) is the state in which the thread support pillar was set to the standing position, (B) is the thread support pillar standing A state in which the posture is being changed from the posture to the horizontal posture, and (C) shows a state in which the yarn body support column is set to the recumbent posture.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment for carrying out a line clarification device according to the invention will be described with reference to the drawings. FIG. 1 is a partially cutaway exploded perspective view showing a line clarification device 10 according to a first embodiment of the present invention, and FIG. 2 is an assembled perspective view thereof. 1 and 2, the X direction is referred to as the left-right direction, and the Y direction is referred to as the front-rear direction. In particular, -X is referred to as the left, + X is the right, -Y is the front, and + Y is the rear.

  The line-under-clarification device 10 clearly indicates a position directly below a power transmission line (erection line) 90 (FIGS. 3 and 4) installed in the field, whereby a predetermined workpiece is set in advance from the power transmission line 90. It is possible to provide position data for constructing the building with an accurate separation by a certain distance.

  As shown in FIG. 1, the line-behind clarification device 10 includes a casing 20 having a rectangular parallelepiped shape whose upper surface is open, and a reference stretched across the open portion of the upper surface of the casing 20. A thread (linear body) 30, a mirror body 40 attached to the bottom of the housing 20, a weight 60 suspended from the housing 20 via the string body 50, and the housing 20 It has a basic configuration including a bubble level 70 that detects the horizontal posture of the housing 20.

  The housing 20 is set to a size that can be held by an observer with both hands from the front. Specifically, in the present embodiment, the case 20 has a left-right dimension set to about 150 mm, a front-rear dimension set to about 250 mm, and a vertical dimension set to about 100 mm. In addition, the dimension of the housing | casing 20 is not limited to this.

  The housing 20 includes a pair of front and rear short walls 21, a pair of left and right long walls 22 erected between the left and right edges of the pair of short walls 21, and a rear side from the upper edge of the front short wall 21. A front frame portion 23 extending in the left-right direction projecting by a predetermined dimension toward the left side, and a right frame portion 24 extending in the front-rear direction projecting from the long wall 22 on the right by a predetermined dimension toward the left. From the lower edge of the left long wall 22, the left-side mirror support strip 25 extending in the front-rear direction projecting to the right from the lower edge of the left long wall 22, and the lower edge of the right long wall 22 And a right-side mirror support strip 26 extending in the front-rear direction and projecting to the left by a predetermined dimension.

  The right mirror support strip 26 protrudes leftward from the long wall 22 on the right side, and a wide support strip 261 having a projection amount equal to that of the right frame portion 24, and the wide support strip 261. And a narrow support strip 262 projecting leftward one step down from the left edge. The upper surface of the left mirror support strip 25 and the upper surface of the narrow support strip 262 of the right mirror support strip 26 are set to be flush with each other. The mirror 40 is supported by the left mirror support strip 25 and the narrow support strip 262 of the right mirror support strip 26.

  A first support hole 211 through which the upper end of the cord body 50 is inserted is formed in a central portion in the left-right direction at the lower edge portion of the front short wall 21. The rear end of the reference thread 30 is located at the upper edge of the rear short wall 21 at a position corresponding to half the inner dimension between the left long wall 22 and the right frame 24. A second support hole 212 is formed for insertion so as to support.

  The front frame portion 23 is inserted to support the front end of the reference thread 30 at a position corresponding to half of the inner dimension between the left long wall 22 and the right frame portion 24. A third support hole 231 is formed.

  In addition, a mounting long hole 232 for mounting a long type bubble level 71 described later is formed at a position to the right of the third support hole 231 in the front frame portion 23, and the mounting long hole 232. On the left side, a mounting circular hole 233 for mounting an omnidirectional bubble level 72, which will be described later, is formed.

  The reference yarn 30 is stretched between the second support hole 212 of the rear short wall 21 and the third support hole 231 of the front frame portion 23. In the state where the reference yarn 30 is bridged between the front and rear short walls 21, the rear end portion thereof is folded back behind the second support hole 212 and inserted into the second support hole 212, and the reference yarn 30 is attached to the reference yarn 30 in advance. It is inserted into the metal caulking tube piece S that has been fitted. Subsequently, the caulking cylinder piece S is caulked using a predetermined tool such as pliers, whereby the rear end of the reference yarn 30 is attached to the second support hole 212 of the rear short wall 21.

  The front end of the reference yarn 30 is attached to the third support hole 231 of the front frame portion 23 in the same manner as the rear end. By doing so, the reference yarn 30 is attached between the front and rear short walls 21 as shown in FIG.

  The mirror body 40 is for projecting the reference yarn 30 and the power transmission line (erection line) 90 (FIGS. 3 and 4), and the left mirror support strip 25 and the right mirror support strip of the housing 20. It is supported by 26 narrow support strips 262. The mirror body 40 is set to have the same longitudinal dimension as the inner dimension between the pair of short walls 21, and the left and right lengths of the inner wall side of the long wall 22 on the left side and the right lens body support strip 26. The inner dimension between the wide support strip 261 and the left edge is set to be the same. The mirror body 40 is mounted in the housing 20 from the upper surface opening before the reference yarn 30 is installed between the front and rear short walls 21 and supported by the left and right mirror support strips 25 and 26.

  Further, a mirror surface 41 is formed on the upper surface side of the mirror body 40. The mirror surface 41 is provided with a reference line 42 consisting of a dotted line at the center position in the left-right direction over the entire length in the front-rear direction. The reference line 42 is for aligning a mirror image of the power transmission line 90 when the power transmission line 90 is reflected on the mirror surface 41. By attaching the reference line 42 to the mirror surface 41, the state in which the mirror image of the power transmission line 90 is inclined with respect to the front-rear direction of the housing 20 can be easily corrected by changing the posture and position of the housing 20. Can do.

  Such a mirror body 40 is set in a posture so as to be elongated in the front-rear direction before the reference yarn 30 is attached to the housing 20, and then from the rear through the upper surface opening of the housing 20. As shown in FIG. 2, the left and right edges are supported by the narrow support strips 262 of the left mirror support strip 25 and the right mirror support strip 26, respectively. It will be in the state where it was attached to the bottom.

  The string body 50 is for suspending a weight 60, and an upper end portion of the string body 50 is inserted into the first support hole 211 formed in the short wall 21 in front of the housing 20 and is turned back. Is inserted into a caulking cylinder piece S that is preliminarily fitted to the original string body 50, and the caulking cylinder piece S is caulked with a predetermined tool such as pliers in this state, as shown in FIG. 20 is locked to a short wall 21 in front of 20. A weight 60 is attached to the lower end of the string 50.

  A reference line (horizontal state detection means) 213 hanging from the extended line toward the front of the reference yarn 30 toward the first support hole 211 is drawn on the short short wall 21 to which the string body 50 is attached. ing. The reference line 213 is orthogonal to the mirror surface 41, and an extension line extending downward from the reference line 213 is connected to the string body 50 in a state where the housing 20 is set so that the mirror surface 41 is horizontal. Become concentric.

  Conversely, the mirror surface 41 is brought into a horizontal posture by the observer adjusting the posture of the housing 20 so that the reference line 213 is located on the same straight line as the string body 50 (coincidence). It shows that the posture can be set. Incidentally, the string body 50 is set to such a length dimension that the weight 60 is not grounded in a state where the observer lifts the housing 20 to the position of the height of the eye E (FIG. 3).

  As shown in FIG. 1, the weight 60 includes a weight main body 61 having an inverted conical shape with a sharply pointed apex facing downward, and a bottom surface of the weight main body 61 (in the example shown in FIG. The bottom surface of the weight 60 is provided with a projecting piece 62 projecting outward from the center of the weight 60. The projecting piece 62 is provided with an attachment hole 621 for allowing the string 50 to pass therethrough.

  The lower end portion of the cord body 50 is passed through the mounting hole 621 of the projecting piece 62 of the weight 60 and then folded back and overlapped with the original cord body 50. The caulking cylinder piece S that is externally fitted to the body 50 is fitted, and the caulking cylinder piece S is subsequently caulked with a predetermined tool such as pliers, so that the lower end portion of the string body 50 is as shown in FIG. It is attached to the protruding piece 62 of the weight 60.

  In the present embodiment, the bubble level 70 is composed of a long type bubble level 71 and an omnidirectional bubble level 72. The long type bubble level 71 is used to detect whether or not the mirror surface 41 of the mirror body 40 is horizontal in the left-right direction. A long level body 711 made of a transparent material having a convex arc shape in a front view seen from the −Y direction, and a substantially intermediate position in the vertical direction of the long level body 711. And a flange 712. The portion below the flange 712 of the long level body 711 is dimensioned so as to be fitted in the mounting long hole 232 formed in the front frame portion 23 of the housing 20 in a sliding contact state.

  Therefore, by pushing the lower part of the long level bubble body 711 into the mounting long hole 232 until the flange 712 hits the edge of the mounting long hole 232, the long type bubble level 71 has a housing as shown in FIG. It will be in the state with which 20 front picture frame parts 23 were equipped.

  A liquid and small bubbles are enclosed in the long level body 711 of such a long type bubble level 71. Accordingly, it is possible to know that the mirror surface 41 of the mirror body 40 is horizontal in the left-right direction in a state where this bubble is located at the center in the left-right direction of the long level body 711.

  The omnidirectional bubble level 72 is for detecting whether or not the casing 20 is generally horizontal in all front, rear, left, and right directions. A cylindrical level body 721 formed in a hemispherical shape, and a flange 722 formed at a substantially central portion of the cylindrical level body 721 in the vertical direction. The cylindrical level body 721 has an outer diameter dimension so that the cylindrical level body 721 can be fitted into a mounting circular hole 233 formed in the front frame portion 23 of the housing 20 in a sliding contact state.

  Liquid and small bubbles are enclosed in the cylindrical level body 721 of the omnidirectional bubble level 72. Therefore, it can be known that the mirror surface 41 of the mirror body 40 is horizontal in all directions in a state where the bubble is located at the center of the semispherical shape at the top of the cylindrical level body 721.

  As described above, the long bubble type bubble level 71 and the omnidirectional bubble level 72 are used as the bubble level 70. First, the omnidirectional bubble level 72 sets the housing 20 in a substantially horizontal posture. In order to obtain the horizontal state of the housing 20 (that is, the mirror surface 41) in the left-right direction with the long bubble level 71.

  And after attaching the mirror body 40 to the bottom part of the housing | casing 20, by attaching the string body 50 provided with the reference | standard thread | yarn 30 and the weight 60 to each predetermined | prescribed site | part of the housing | casing 20, as shown in FIG. The line clarification device 10 according to the present embodiment is completed.

  Hereinafter, based on FIG. 3 and FIG. 4, the usage method of the line clarification apparatus 10 of 1st Embodiment is demonstrated. FIG. 3 is an explanatory diagram in a side view showing a state in which the observer M is observing to clearly indicate the position immediately below the transmission line 90, and FIG. 4 is a front view of the observer M's line of view during the observation shown in FIG. FIG.

  First, as shown in FIG. 3, the power transmission line 90 is installed between two power poles 91 having the same height and standing on the flat ground R. The observer M causes the line-under-clarification device 10 to clearly indicate the position directly below the power transmission line 90 while looking at the power transmission line 90 from below.

  That is, the observer M is first positioned at the place where the underline clarification device 10 is held with both hands so that the string body 50 is in front, and the eye is attached even if it is almost directly below. At this time, the direction in which the reference yarn 30 extends is matched with the direction in which the power transmission line 90 extends.

  Subsequently, the observer M observes each bubble of the long type bubble level 71 and the omnidirectional bubble level 72 and keeps the case 20 in a horizontal position so that the reference line 213 and the string 50 are in a straight line. 20 postures are finely adjusted to accurately set the horizontal posture. At this time, as shown in FIG. 4, the observer M directs the eye E toward the mirror surface 41 and rotates the housing 20 forward and backward around the reference yarn 30 to bring the mirror image 30 ′ of the reference yarn 30 to the reference line 42. Keep it along.

  In this state, the observer M moves back and forth and right and left while visually recognizing the mirror surface 41, or rotates forward and backward about a virtual vertical axis along the horizontal plane, and displays the mirror surface image 90 'of the power transmission line 90 as a reference line. Adjust to 42. By doing so, as shown in FIG. 4, the mirror surface 41 is in a state where the reference yarn 30, the guide line 42, the mirror image 30 'of the reference yarn 30, and the mirror image 90' of the power transmission line 90 overlap each other.

  In this state, the reference yarn 30 is located immediately below the power transmission line 90, and the string body 50 extends from the short wall 21 in front of the housing 20 along the vertical plane including the reference yarn 30. As a result, the position on the ground where the tip of the weight 60 suspended from the lower end of the string 50 is pointing (ie, clearly shown) is the position directly below the power transmission line 90. Become.

  In order to specify this position, the observer M should be bent and crouched on the spot while maintaining the horizontal posture of the housing 20. By doing so, the tip of the weight 60 is landed. This landing point is directly below the transmission line 90. A predetermined marking is made at this landing point.

  As described above, according to the line clarification device 10 according to the first embodiment, the observer M is located at a place where the observer M holds the line clarification device 10 and puts an eye on the position directly below the power transmission line 90, The reference thread 30, the reference line 42, the mirror image 30 ′ of the reference thread 30, and the power transmission line 90 are moved on the mirror surface 41 of the casing 20 while moving back and forth, left and right while maintaining the horizontal posture of the casing 20. By the simple operation of overlapping the mirror image 90 ′, the position immediately below the transmission line 90 can be clearly and quickly specified, and the workability of the line-under explicit work can be improved.

  The underline clarification device 10 has an extremely simple structure in which a reference thread 30, a mirror body 40, a string body 50, a weight 60, and a bubble level 70 are attached to a box-shaped casing 20. Therefore, it is equipped with a moving mechanism that supports a conventional housing in a movable manner, an image sensor equipped with a CCD camera, a monitor that outputs an image read by the image sensor, and a pair of tripods that support them. A significant reduction in manufacturing costs can be achieved compared to a very heavy underline demonstrator.

  FIG. 5 is a perspective view showing a line clarification device 10a according to the second embodiment of the present invention. In addition, the direction display by X and Y in FIG. 5 is the same as in FIG. 1 (−X: leftward, + X: rightward, −Y: forward, + Y: backward).

  As shown in FIG. 5, the underline clarification device 10 a of the second embodiment is different from that of the first embodiment in the configurations of the reference yarn 30 and the string body 50. That is, in the second embodiment, the reference yarn 30 and the string body 50 according to the first embodiment are configured by each part of one long thread body 80.

  On the other hand, the housing 20 has a first notch 214 formed by notching a substantially central portion of the upper surface of the front short wall 21 in the front-rear direction, and the first notch 214 facing the first notch 214 and is rearward in the front-rear direction. A second cutout portion 215 formed by cutting out a substantially central portion of the upper surface of the short wall 21. The long thread body 80 is hooked on the first cutout portion 214 and the second cutout portion 215, respectively. The base end of the oval connecting piece 84 is attached to the distal end of the portion (folded portion 81) that faces backward from the second cutout portion 215 of the long thread body 80. A coupling hole 841 is formed at the tip of the connecting piece 84.

  And the part (string body part 50a which is a part corresponding to the string body 50 of 1st Embodiment) pulled out ahead from the 1st notch part 214 of the front short wall 21 in the long thread body 80 is a connection piece. 84 is inserted into the coupling hole 841. A weight 60 is attached to the tip of the string body 50a. In such a long yarn body 80 of the second embodiment, the portion laid between the front and rear short walls 21 is a reference yarn portion (linear body) 30a corresponding to the reference yarn 30 of the first embodiment. .

  Note that a part of the string body portion 50a that extends forward from the first cutout portion 214 coincides with a reference line 213 similar to that of the first embodiment drawn on the front short wall 21 in a straight line. You can do (overlap). Therefore, in the present embodiment, as in the first embodiment, the horizontal state of the mirror surface 41 of the mirror body 40 can be detected by the bubble level 70 (71, 72), and the string body portion 50a and the reference line 213 match. By doing so, the horizontal state of the mirror surface 41 can be detected.

  The configuration of each component other than the long thread body 80 and the notch portions 214 and 215 in the line-under-drawing device 10a of the second embodiment is the same as that of the first embodiment.

  According to the line clarification device 10a of the second embodiment, the reference thread 30 and the string body 50, which are separate in the first embodiment, are integrated by the long thread body 80. This can contribute to a reduction in the assembly cost of the explicit device 10a.

  In the long thread body 80, a reference thread portion 30a is set as corresponding to the reference thread 30 of the first embodiment, and a string body portion 50a is set as corresponding to the same string body 50. Therefore, the position directly under the power transmission line 90 can be clearly indicated in the same manner as the line-under-clarification device 10 of the first embodiment using the reference yarn portion 30a and the string body portion 50a.

  FIGS. 6 and 7 are perspective views showing a line clarification device 10b according to a third embodiment of the present invention. FIG. 6 shows a state in which the thread support pillar 28 is set in the standing posture, FIG. These respectively show the state in which the thread support column 28 is set in the recumbent posture.

  FIG. 8 is a view for explaining the process of changing the posture of the thread support column 28. FIG. 8A shows a state in which the thread body support column 28 is set in the standing posture, and FIG. 8B shows a state in which the thread body support column 28 is being changed in posture from the standing position to the horizontal posture. FIG. 8C shows a state in which the thread body support column 28 is set to the recumbent posture.

  6 to 8 are the same as those shown in FIG. 1 (−X: leftward, + X: rightward, −Y: forward, + Y: backward).

  First, as shown in FIGS. 6 and 7, the underline clarification device 10 b of the third embodiment is a base plate body (housing) 27 that is long in the front-rear direction and has a rectangular shape in plan view as the housing 20 a. A thread support column 28 corresponding to the short wall 21 of the first embodiment, which is erected so that the posture can be changed at the center position in the left-right direction at the front and rear ends of the foundation plate 27, and the thread support column And a support column holding portion 29 that holds the posture 28 so that the posture can be changed. Moreover, the long thread body 80 of 2nd Embodiment is employ | adopted as the linear body which concerns on this invention.

  The base plate body 27 is configured in a square shape (for example, a rectangular shape) in plan view. On the upper surface of the base plate body 27, the same mirror body 40 as in the first embodiment is placed.

  The thread support pillars 28 are respectively provided in the left and right central portions on the upper surface side of the front and rear ends of the base plate 27. Each thread body support column 28 is pivotally supported so that its base end can be rotated forward and backward about a screw shaft 292 provided in the support column holding portion 29 and extending in the front-rear direction, and as shown in FIG. The posture can be changed between a standing posture in a state of being erected and a recumbent posture lying on the base plate 27 as shown in FIG.

  Such a thread support column 28 is provided with a notch groove 281 extending in the front-rear direction on the tip surface thereof. These notch grooves 281 are for fitting and supporting both end portions of the long yarn body 80 corresponding to the reference yarn portion 30a.

  The pair of front and rear short side edges 271 extending in the left-right direction in the base plate 27 are provided with guide convex pieces 272 projecting outward at positions corresponding to the brackets 291. These guide convex pieces 272 are each provided with a notch groove 273 extending in the vertical direction on the front and rear surfaces. Then, the long thread body 80 is guided through each notch groove 281 of the thread body support column 28, thereby preventing the long thread body 80 from interfering with the support column holding portion 29 and also supporting the thread body. In a state in which the column 28 is set in the standing posture, the portions laid on the notch grooves 281 and 273 of the long thread body 80 are orthogonal to the mirror surface 41 in a front view as viewed from −Y. ing.

  The support column holding portion 29 is erected on the base plate body 27 so as to face each other in the front-rear direction, and a pair of brackets 291 per one thread support column 28, and the pair of brackets 291 are penetratingly installed. The threaded shaft 292 and a leaf spring 293 for holding the thread support column 28 in the standing posture and the recumbent posture are provided.

  The plate spring 293 is positioned between the pair of brackets 291 and below the thread body support column 28 supported by the screw shaft 292, with the elastic deformation portion being between the pair of brackets 291. The leaf spring 293 has a left base end portion 293 a fixed to the base plate body 27 with a screw at a slightly left position of the bracket 291. Then, when the thread support pillar 28 does not exist, the leaf spring 293 is inclined so that the right half 293b rises substantially straight toward the right as indicated by a two-dot chain line in FIG. The shape is set to do. Accordingly, the plate spring 293 is formed in a V shape as a whole when no load is applied.

  Then, in a state where the thread body support column 28 is attached to the bracket 291 via the screw shaft 292, the thread body support pillar 28 is elastically deformed so as to open the V shape by interfering with the base end portion of the thread body support column 28 ( (Indicated by a solid line in FIG. 8).

  On the other hand, as shown in FIG. 8 (A), the thread support pillar 28 is in a state of being set in a standing posture and in a state of being inclined downward toward the right at the lower end portion which is the base end side. A sharp operation protrusion 282 for relatively pressing the right half 293b of the protruding leaf spring 293 is provided. The tip of the operation protrusion 282 is positioned on the right side of the screw shaft 292 in a state where the thread body support column 28 is set in the standing posture (FIG. 8A), and the thread body support column 28 is in the lying position. The installation position is set so as to be positioned on the left side of the screw shaft 292 in the set state (FIG. 8C).

  Further, the bracket 291 is provided with a stopper 291a for preventing the thread support pillar 28 set in the standing posture from tilting leftward at a position above the left screw shaft 292. It has been.

  Therefore, when the thread support column 28 is set in the standing position, the thread support column 28 urged counterclockwise around the screw shaft 292 by the right half 293b of the leaf spring 293 is provided as a stopper. By being blocked by 291a, it is prevented from further rotating counterclockwise around the screw shaft 292.

  Hereinafter, based on FIGS. 8A, 8B, and 8C, the posture changing operation of the thread support column 28 and the operation of the operation projections 282 and 293 will be described. First, as shown in FIG. 8A, when the thread body support column 28 is set in the standing posture, the operation protrusion 282 of the thread body support column 28 has a right side of the elastically deformed leaf spring 293. In order to receive the upward biasing force from the half 293b, it tries to rotate counterclockwise around the screw shaft 292, but cannot be rotated by being blocked by the stopper 291a. As a result, the standing state of the thread body support column 28 is stabilized by the urging force of the leaf spring 293.

  Next, when the thread support column 28 set in the standing posture is manually rotated around the screw shaft 292 in the clockwise direction, the operation protrusion 282 presses the right half 293b of the leaf spring 293. As shown in FIG. 8B, it is once elastically deformed.

  When the rotation operation of the thread body support column 28 is continued, the operation projection 282 moves to the left side of the screw shaft 292, whereby the operation projection 282 applies a biasing force toward the clockwise direction around the screw shaft 292 to the right of the leaf spring 293. Since it receives from half 293b, an operator will get a click feeling by turning lightly suddenly.

  In the state where the thread support pillar 28 is changed to the recumbent posture, as shown in FIG. 8C, the operation protrusion 282 is attached clockwise around the screw shaft 292 by the right half 293b of the leaf spring 293. Because of the influence, the recumbent posture can be stabilized.

  When changing the posture of the thread support column 28 set in the recumbent posture to the standing posture, the thread support column 28 is obtained while obtaining a click feeling by the reverse action of the posture change from the standing posture to the recumbent posture. 28 can be raised.

  As described above in detail, the line marking devices 10, 10 a, 10 b according to the first to third embodiments include the casings 20, 20 a whose upper surfaces are opened over the entire surface, and the casings 20, 20 a. Linear bodies (first and second embodiments) stretched between the upper edge portions of wall portions facing each other (short wall 21 in the first and second embodiments, and thread support pillar 28 in the third embodiment). Is attached to the casings 20 and 20a that point in the vertical direction in a state where the reference yarn 30 and the reference yarn portion 30a in the third embodiment overlap with the power transmission line 90 installed in the field in a plan view. And a weight 60 suspended from a string 50 as a vertical indicating means.

  In the underline clarification devices 10 and 10a of the first and second embodiments, the casings 20 and 20a are provided on the upper surface of the flat bottom (the upper surface of the base plate 27 in the third embodiment). A mirror body 40 and a long bubble level 71 extending in the direction in which the mirror surface 41 extends in a state orthogonal to the direction in which the linear body extends are provided.

  According to the underline clarification devices 10 and 10a according to the first and second embodiments having such a configuration, the casings 20 and 20a are arranged so that the bubbles of the long bubble level 71 are positioned at the center of the level. By adjusting and setting the posture, the mirror surface 41 formed on the housings 20 and 20a can be leveled.

  In this state, the mirror surface 41 is visually recognized from the end side of the linear body, and the observer moves to a position where the linear body itself and the mirror surface image of the linear body and the power transmission line 90 reflected on the mirror surface 41 overlap each other. It turns around. The position indicated by the weight 60 in the state where the linear body itself, the linear body reflected on the mirror surface 41 and the power transmission line 90 overlap with each other can be clearly indicated as a position directly below the power transmission line 90.

  Thus, after setting the attitudes of the casings 20 and 20a based on the long bubble level 71, the observer observes so that the linear object overlaps the linear object reflected on the mirror surface 41 and the image of the power transmission line 90. It is possible to clearly indicate the line under the power transmission line 90 with a simple operation in which M moves and turns, and the workability of the line underline clearing work can be improved.

  Also, the line-behind clarification device includes the casings 20 and 20a, a linear body stretched across the upper surface opening of the casings 20 and 20a, and the vertical indicating means attached to the casings 20 and 20a. The image is provided with a moving mechanism that supports a predetermined casing in a movable manner, and a CCD camera. The sensor, the monitor that outputs the image read by the image sensor, and a pair of tripods that support them, etc. Can contribute to a significant reduction in manufacturing costs.

  Further, in the line clarification device 10a according to the first to third embodiments, in addition to the long type bubble level 71 as a horizontal state detection means, the lower side perpendicular to the mirror surface 41 from the outer surface side of the front short wall 21 A reference line 213 attached so as to extend toward and a string body 50 suspended from the short wall 21 to suspend the weight 60 are employed. In the third embodiment, the reference line 213 is stretched between the notch groove 281 of the front thread body support column 28 in the long thread body 80 and the notch groove 273 of the guide convex piece 272. You can hit the part.

  According to such a configuration, the direction in which the reference line 213 attached to the casings 20 and 20a extends in the extending direction of the string body 50 extending under the weight 60 without using the long bubble level 71. (Specifically, by making the reference line 213 and the string 50 in a straight line when viewed from the front in the −Y direction), the line on the mirror surface 41 of the housings 20 and 20a. The direction orthogonal to the shape (the reference yarn 30 in the case of the first and second embodiments, and the reference yarn portion 30a in the case of the third embodiment) can be made horizontal.

  Thus, even if the bubble level 70 is not particularly provided, after setting the postures of the casings 20 and 20a by a simple operation of matching the extending direction of the reference line 213 and the extending direction of the string body 50, the linear shape The body, the linear object reflected on the mirror surface 41, and the image of the power transmission line 90 are moved so that the observer M moves so as to overlap the direction below the weight 60 by the simple operation that the observer M moves. It can be specified.

  The underline clarification device 10, 10a, 10b is attached to the casing 20, 20a, a linear body stretched across the upper surface opening of the casing 20, 20a, and the casing 20, 20a. Since it has a simple structure consisting of the reference line 213 as the vertical indicating means and the weight 60 suspended from the string 50, the case can be moved in the conventional line clarification device Compared to a very heavy equipment equipped with a moving mechanism that supports it, an image sensor equipped with a CCD camera, a monitor that outputs the image read by this image sensor, and a pair of tripods that support them. It can be simplified and a significant reduction in manufacturing cost can be achieved.

  Further, the mirror surface 41 is formed by drawing a guide line 42 drawn in the extending direction of the linear body at a position directly below the linear body in a state where the mirror surface 41 is maintained in the horizontal direction. Therefore, the mirror surface 41 can be made horizontal by visually recognizing the mirror surface 41 from the end side of the linear body and matching the image of the linear body reflected on the mirror surface 41 with the reference line 42.

  Therefore, the horizontal state of the mirror surface 41 can be changed more quickly and appropriately by double check using the long type bubble level 71 and the horizontal setting of the mirror surface 41 using the vertical indicating means such as the reference line 213 and the string body 50. Can be secured.

  The present invention is not limited to the above embodiment, and includes the following contents.

  For example, in the above embodiment, the power transmission line 90 has been described as an example of the erection line. However, the present invention is not limited to the transmission line 90 being the only erection line. You may use in order to pinpoint the line position of other types of construction lines, such as a cable.

  Further, in the above embodiment, the casings 20 and 20a are provided with two units, the long bubble level 71 and the omnidirectional bubble level 72, as the bubble level 70. It is not limited to providing the two units 70, but only the long type bubble level 71 may be provided. By doing so, the direction parallel to the mirror surface 41 orthogonal to the direction in which the reference yarn 30 extends can be set as the horizontal direction, so that even if the mirror surface 41 is not slightly horizontal in the direction in which the reference yarn 30 extends, the weight There is no inconvenience in causing 60 to clearly indicate the position immediately below the transmission line 90.

  In the above-described embodiment, the mirror surface 41 is also placed in the horizontal posture by matching the reference line 213 drawn on the short wall 21 in front of the housing 20 with the extending direction of the string 50 suspended by the weight of the weight 60. Can be. Therefore, even if the expensive bubble level 70 is not provided in the housing 20, there is no problem in setting the mirror surface 41 in the horizontal posture.

  In the line clarification device 10b of the third embodiment, the thread body support column 28 is configured to be tiltable in a direction orthogonal to the direction in which the reference thread part 30a extends, but instead of this, a pair of thread bodies You may comprise so that the support pillar 28 can each be inclined toward the direction which mutually opposes.

  In the above embodiment, the reference yarn 30 and the reference yarn portion 30a are stretched in the longitudinal direction of the casings 20 and 20a. However, the present invention is not limited to this. It may be stretched in the short direction.

  In the above embodiment, the weight 60 suspended from the casings 20 and 20a via the string body 50 is employed as the vertical instruction means. However, a laser beam irradiator as a light source is employed instead of the weight 60. Then, the laser beam from the laser beam irradiator may be irradiated downward in the vertical state. By doing so, the portion illuminated by the laser beam on the ground can be clearly shown as a position directly below the transmission line 90.

  In the underline clarification device 10a of the second embodiment described above, the long thread body 80 is employed. However, the present invention is not limited to this, and the long thread body 80 is replaced with the first thread body 80. The reference yarn 30 and the string body 50 similar to those in the embodiment may be provided.

  10 (10a, 10b) ... Line marking device, 20 (20a) ... Housing, 21 ... Short wall, 211 ... First support hole, 212 ... Second support hole, 213 ... Reference line, 214 ... First notch Part, 215 ... second cutout part, 22 ... long wall, 23 ... front frame part, 231 ... third support hole, 232 ... attachment long hole, 233 ... attachment circular hole, 24 ... right side frame part, 25 ... Left mirror support strip, 26 ... right mirror support strip, 261 ... wide support strip, 262 ... narrow support strip, 27 ... base plate, 271 ... short side edge, 272 ... guide projection, 273 ... Notch groove, 28 ... thread body support column, 281 ... notch groove, 282 ... operation protrusion, 29 ... support column holding part, 291 ... bracket, 291a ... stopper, 292 ... screw shaft, 293 ... leaf spring, 293a ... plate Spring base end, 293b ... right half of leaf spring, 30 ... reference thread (linear body) 30a ... reference thread portion (linear body), 30 '... mirror surface image, 40 ... mirror body, 41 ... mirror surface, 42 ... reference line, 50 ... string body, 50a ... string body portion, 60 ... weight, 61 ... heavy Weight body, 62 ... Projection piece, 621 ... Mounting hole, 70 ... Bubble level, 71 ... Long type bubble level, 711 ... Long level body, 712 ... Flange, 72 ... Omnidirectional bubble level, 721 ... Cylindrical level body, 722 ... flange, 80 ... long thread body, 81 ... folded portion, 84 ... connecting piece, 841 ... coupling hole, 90 ... power transmission line (erection line), 90 '... mirror image of power transmission line, 91 ... Electric pole, R ... Flat ground, E ... Eye, M ... Observer, S ... Caulking cylinder piece.

Claims (5)

A housing whose upper surface is open over the entire surface;
A linear body stretched between the upper edges of the opposite wall portions of the housing;
A position directly below the erection line is provided, wherein the linear body is provided with a vertical indicating means attached to the casing and pointing in a vertical direction in a state where the linear body overlaps with an erection line laid in the field in a plan view. An underline explicit device for
The housing includes a mirror surface capable of projecting the linear body, and a horizontal state detection unit that detects a horizontal state of the mirror surface,
The line state indicating device, wherein the horizontal state detecting means is a bubble level attached to the housing.   The underline clarification device according to claim 1, wherein the vertical instruction means is a weight suspended from the wall portion via a string body.   The underline clarification device according to claim 1, wherein the vertical instruction unit is a light source that irradiates a light beam downward in a direction orthogonal to the mirror surface in the housing. A housing whose upper surface is open over the entire surface;
A linear body stretched between the upper edges of the opposite wall portions of the housing;
A position directly below the erection line is provided, wherein the linear body is provided with a vertical indicating means attached to the casing and pointing in a vertical direction in a state where the linear body overlaps with an erection line laid in the field in a plan view. An underline explicit device for
The housing includes a mirror surface capable of projecting the linear body, and a horizontal state detection unit that detects a horizontal state of the mirror surface,
The horizontal state detecting means includes a reference line attached so as to extend downward from the outer surface side of the wall portion to which the linear body in the housing is fixed, perpendicular to the mirror surface,
The vertical indicating means includes a weight and a string body for suspending the weight.
The line demonstrator according to claim 1, wherein the string is provided in the casing so as to be able to coincide with the reference line.   The reference line is drawn by the said mirror surface toward the direction where the said linear body is extended in the directly under position of the said linear body on the said mirror surface in the state by which the said mirror surface was maintained horizontal. The underline clarification device according to any one of the above.

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