JP4266064B2 - Surveying target instrument, surveying instrument mounting apparatus and tower surveying method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surveying target instrument that can be attached to a steel tower, a surveying instrument mounting apparatus, and a steel tower surveying method using them.
[0002]
[Prior art]
As a conventional survey target instrument and steel tower survey method, there is a technique disclosed in Japanese Patent Publication No. 7-85016. That is, this is a technique in which a survey target using a retroreflective sheet is attached in the vicinity of a wire support point of a power transmission tower, and a distance between the observation point and the survey target is measured by a light wave measuring device.
[0003]
[Problems to be solved by the invention]
In recent years, it has been required to extend the life of existing facilities by enhancing repairs and inspections of existing transmission line towers. It is necessary to perform surveys between the wire support points in order to improve the power transmission equipment, such as changing the wires. To attach the conventional surveying target equipment to the power transmission tower, perform a power outage for work safety. There is a need. However, considering the demand for electricity, there is a problem that it is not possible to easily perform a work blackout.
[0004]
The present invention has been made paying attention to such conventional problems, and provides a surveying target instrument, a surveying instrument mounting apparatus, and a tower surveying method that enable surveying between electric wire support points without performing a work blackout. The purpose is to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a surveying target instrument according to the present invention of claim 1 is a surveying target instrument that can be attached to a load-suspending plate provided on a steel tower and made of an iron plate and having a through hole. A base portion, an insertion portion, a holding member, a magnet, and a target; the base portion has a gripping portion; and the insertion portion has a diameter that can be fitted into the through hole. The holding member is attached to the base so as to detachably hold the edge of the load-carrying plate with elasticity when the insertion portion is fitted in the through-hole; Provided between the insertion portion of the base and the holding member so as to be attracted to the loading plate when the holding member presses an edge of the loading plate that fits into the through hole; The target is That is provided in the part, characterized.
[0006]
The target may be provided on the base in the same direction as the insertion direction of the insertion portion, may be provided in a direction perpendicular to the insertion direction, or may be provided in another direction. The target is preferably made of a retroreflective sheet having a plurality of trihedral cube corner lens elements on the reflective surface.
[0007]
When the surveying target instrument according to the present invention of claim 1 is attached to a load hanging plate of a steel tower, it grips and supports the grip portion using a work bar, and the insertion portion is fitted into the through hole of the load lifting plate. Then, the edge of the loading plate is pressed by the holding member, and the magnet is attracted to the loading plate. Thereby, it can be safely and easily attached to the steel tower, and the distance between the observation point and the target measurement point and the angle between the observation point and the two targets can be measured by the light wave measuring device. Since the surveying target instrument according to the present invention of claim 1 can be attached to a steel tower using a working bar, it enables surveying between wire support points without performing a work blackout.
[0008]
A surveying instrument mounting apparatus according to the present invention of claim 2 is a surveying instrument mounting apparatus that can be mounted on a steel tower having an electric wire support portion formed by joining one end sides of two iron arms and opening each other end side. And having a substrate, two guide plates, a magnet, and an attachment portion; each guide plate is provided to be rotatable along the attachment surface in a state perpendicular to the attachment surface of the substrate; A magnet is provided on the outer surface of each guide plate; and the attachment portion is provided on the substrate so that a surveying target instrument can be attached thereto.
[0009]
The surveying instrument mounting apparatus according to the second aspect of the present invention is attached to a steel tower having an electric wire supporting portion formed by joining one end sides of two iron arms and opening each other end side. When attaching to such a steel tower, hold it with a work bar and support it, and the board is supported on each arm, and each guide plate is attached to the arm so that the magnet is attracted to each arm along the opposing surface of each arm . At this time, since each guide plate is adsorbed along the facing surface of each arm, the mounting portion is positioned at a fixed position of the arm, and the measuring point can be set at the fixed position. In this way, it can be safely and easily attached to the steel tower, and the distance between the observation point and the measurement target instrument and the angle between the observation point and the two measurement points are precisely measured by the light wave measuring instrument. can do. Since the surveying instrument mounting apparatus according to the present invention of claim 2 enables the mounting of the surveying target instrument to the steel tower using a work bar even when the steel tower is not equipped with a loading plate, a work blackout is caused. Allows surveying between wire support points without having to.
[0010]
The surveying instrument mounting apparatus according to the third aspect of the present invention is a surveying instrument mounting apparatus that can be mounted on a steel tower having an electric wire support portion formed by joining one end sides of two iron arms and opening each other end side. And having a substrate, two guide plates, a connecting member, a magnet, and an attachment portion; each guide plate is rotatable along the attachment surface in a state perpendicular to the attachment surface of the substrate. The connecting member extends parallel to the mounting surface, and is spaced from each rotation center of each guide plate at an equal distance in the opposite direction to each guide plate at an interval at which each guide plate can be arranged in parallel to each other. The magnet is provided on an outer surface of each guide plate; and the attachment portion is provided on the substrate so that a surveying target instrument can be attached thereto.
[0011]
The surveying instrument mounting apparatus according to the third aspect of the present invention is attached to a steel tower having an electric wire support portion formed by joining one end sides of two iron arms and opening each other end side. When attaching to such a steel tower, hold it with a work bar and support it, and the board is supported on each arm, and each guide plate is attached to the arm so that the magnet is attracted to each arm along the opposing surface of each arm . At this time, since each guide plate is connected by the connecting member, the guide plates rotate in the opposite directions at an equal angle from the parallel state. Thereby, since each guide plate adsorbs without deviating with respect to the opposing surface of each arm, the mounting portion is reliably positioned at the fixed position of the arm, and the measurement point can be accurately set at the fixed position. In this way, it can be safely and easily attached to the steel tower, and the light wave measuring device can measure the distance between the observation point and the target measurement point and the angle between the observation point and the two targets more precisely. Can do. Since the surveying instrument mounting apparatus according to the present invention of claim 3 enables the mounting of the surveying target instrument to the steel tower using a work bar even when the steel tower does not have a loading plate, a work blackout can be caused. Allows surveying between wire support points without having to.
[0012]
A surveying instrument mounting apparatus according to the present invention of claim 4 is the surveying instrument mounting apparatus of claim 2 or 3, wherein the surveying target instrument of claim 1 is provided, and the mounting part has a mounting through-hole, The insertion part is fitted into the attachment through hole, and the survey target instrument is attached to the attachment part.
[0013]
The surveying instrument mounting apparatus according to the fourth aspect of the present invention can provide the same operations and effects as the surveying instrument mounting apparatus according to the second or third aspect by using the surveying target instrument of the first aspect.
[0014]
According to a fifth aspect of the steel tower surveying method of the present invention, two of the surveying target instruments according to the first aspect of the present invention are configured such that the insertion portion is fitted into the through hole, and the edge portion of the loading plate is retained. Pressed by a member, adsorbs the magnet to the loading plate and attaches it to each loading plate of the two steel towers; installs a light wave measuring device at the observation point, and transmits the modulated light wave emitted by this light wave measuring device The modulated light wave reflected by the target and reflected by the light wave measuring device is received by the light wave measuring device, and the distance between the observation point and each target and the angle formed by the observation point and each target are measured by the light wave measuring device. The distance between the targets is obtained from the distance and angle.
[0015]
In the tower surveying method according to the present invention of claim 5, the surveying target instrument of claim 1 can be safely and easily attached to the loading plate of the tower using a work bar, so that the light wave can be obtained without performing a work blackout. With the measuring instrument, it is possible to easily perform surveying between wire support points in the vicinity of the loading plate.
[0016]
The tower surveying method according to the present invention of claim 6 is the survey instrument mounting device according to claim 2, wherein the target is mounted on the mounting portion, and the substrate is each arm. Are attached to two steel towers so that the magnets are attracted to each arm; an optical wave measuring device is installed at an observation point, and the optical wave measuring device is The modulated light wave to be emitted is reflected by the target, the reflected modulated light wave is received by the light wave measuring device, the distance between the observation point and each target and the observation point and each target by the light wave measuring device. An angle formed is measured, and a distance between each target is obtained from the distance and the angle.
[0017]
The tower surveying method according to the present invention of claim 6 is the surveying instrument mounting apparatus according to claim 2, wherein the target is attached to the mounting portion by using a work bar even when the tower does not have a loading plate. Since it can be safely and easily attached to the steel tower, it is possible to easily and precisely measure between the wire support points near the end of the arm by the light wave measuring instrument without performing a work interruption.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 6 show an embodiment of the present invention.
In order to improve the power transmission equipment such as the re-wiring, it is necessary to perform surveying between the wire support points 2 of the transmission line tower 1 (see FIG. 6). When the loading plate 3 is provided on the steel tower 1, as shown in FIGS. 5A and 5B, the surveying target instrument 10 is attached to the loading plate 3 and surveying is performed. The loading plate 3 is made of an iron plate, has a through hole 4 (see FIG. 1A) in the center, and is attached near the wire support point 2 of the arm 5 of the tower 1.
[0019]
As shown in FIG. 1, the surveying target instrument 10 includes a base portion 11, an insertion portion 12, a holding member 13, a target 14, and a magnet 15. The base 11 is plate-shaped, and integrally includes a square portion 11a, a grip portion 11b, and an attachment portion 11c. The grip portion 11b is disposed on the same plane as the square portion 11a, and the attachment portion 11c is provided perpendicular to the square portion 11a and the grip portion 11b. A circular hole 16a and an elongated hole 16b are formed in the grip portion 11b so as to be easily gripped by an insulating work bar (hot wire bar). An insulating work bar (hot wire bar) 6 (see FIGS. 4 and 5) can be opened and closed by operating the operation part at one end. The attachment portion 11c has four attachment holes 17 for fixing and two attachment holes 18 for attaching the holding member. The insertion portion 12 has a diameter that can be fitted into the through-hole 4 and is provided perpendicular to the attachment portion 11c on the opposite side of the grip portion 11b. The insertion portion 12 is inclined and gradually becomes narrower from the attachment portion 11c side to the tip.
[0020]
The holding member 13 is made of a leaf spring, and when the insertion portion 12 is fitted into the through hole 4, the holding member 13 of the mounting portion 11c is attached to the holding member 11 so that the edge portion 3a of the loading plate 3 can be detachably held by elasticity. The two mounting holes 18 are attached with screws.
[0021]
The magnet 15 is inserted into the through hole 4 and the insertion portion 12 of the attachment portion 11c is attracted to the loading plate 3 when the edge 3a of the loading plate 3 is pressed by the holding member 13. And the holding member 13 are embedded at a height that does not protrude from the plane of the mounting portion 11c.
[0022]
The target 14 is made of a retroreflective sheet having a plurality of trihedral cube corner lens elements on the reflecting surface. As the retroreflective sheet, the trade name “Scotchlite stamp reflective sheet, diamond grade, 3970G (manufactured by Sumitomo 3M Limited)” is suitable. The retroreflective sheet has a wide-angle property and returns not only light from a direction perpendicular to the surface but also light from a direction inclined from the vertical direction to the direction in which the light is received.
[0023]
As shown in FIG. 3, the target 14 has a red collimation frame 14 a at the peripheral portion of the reflection surface of the retroreflective sheet, and has directionality and center markings 14 b on the left and right and upper portions of the collimation frame. The collimation frame 14a is a frame for facilitating the confirmation of the survey target 14 with the naked eye or a telescope. The directionality and center indication 14b is an indication indicating the center of the survey target 14 in order to know the direction of the survey target 14 having the maximum wide-angle property and to determine the position of the survey point. The target 14 further has a cross aim 14c inside the collimation frame 14a. The target 14 is attached to both surfaces of the square portion 11a.
[0024]
There are several types of steel towers 1, and various types of old ones to new ones are mixed. When the tower 1 is not provided with the loading plate 3, the surveying instrument mounting device 20 to which the surveying target instrument 10 is mounted is mounted on the arm 5 of the tower 1 to perform surveying (FIGS. 5A and 5B). )reference). The steel tower 1 has an electric wire support part formed by joining one end sides of two iron arms 5 and opening each other end side.
[0025]
As shown in FIG. 2, the surveying instrument attachment device 20 includes a substrate 21, two guide plates 22, a connecting member 23, a magnet 24, and an attachment portion 25. The substrate 21 has a plurality of through holes 21a on both sides of the center. Each through hole 21 a is arranged in a line in the length direction of the substrate 21. Each guide plate 22 has a female screw hole 22a at the center of the edge, and a male screw 26 is inserted into any through hole 21a of the substrate 21 and screwed into the female screw hole 21a. Thereby, each guide plate 22 is provided rotatably along the attachment surface 21 b in a state perpendicular to the attachment surface 21 b of the substrate 21.
[0026]
The connecting member 23 has through holes 23a at both ends, and further has a plurality of through holes 23a near one end therebetween. The connecting member 23 extends in parallel to the mounting surface 21 b on the opposite side of each guide plate 22. Each guide plate 22 has a female screw hole 22b at a position equidistant from the rotation center a in the opposite directions. The connecting member 23 is rotatably attached to each guide plate 22 with a male screw 27 inserted into the through hole 23a and screwed into the female screw hole 22b. The connecting member 23 is attached to each guide plate 22 so as to leave an interval b in which the guide plates 22 can be arranged in parallel to each other between the attachment positions to the guide plates 22. Between the connecting member 23 and each guide plate 22 and between the connecting member 23 and the male screw 27, gap holding members 28 and 29 are provided with the male screw 27 inserted.
[0027]
By attaching each guide plate 22 to another through hole 21 a of the substrate 21, the interval between the guide plates 22 can be changed. In this case, the connecting member 23 has male screws 27 inserted into the other through holes 23a so that the guide plates 22 can be arranged in parallel with each other between the mounting positions on the guide plates 22. 22 is attached.
[0028]
The magnet 24 is embedded in the outer surface of each guide plate 22 at a height that does not protrude from the surface so as to be attracted to the opposing surface 5 a (see FIG. 5) of each arm 5 of the steel tower 1. An arrow 30 indicating the mounting direction is displayed on the substrate 21.
[0029]
The attachment portion 25 is plate-shaped and is vertically attached to the center of the substrate 21 on the same side as each guide plate 22. The attachment portion 25 is attached to a central position of the substrate 21 that is perpendicular to each guide plate 22 and equidistant from each guide plate 22 when the guide plates 22 are arranged in parallel. The mounting portion 25 has a through-hole 25a having the same size as the through-hole 4 (see FIG. 1) of the load suspension plate 3, and corresponds to the four mounting holes 17 for fixing the mounting portion 11c of the surveying target instrument 10. There are four mounting holes 31. The surveying target instrument 10 is fixed to the attachment portion 25 with screws at the four attachment holes 31 by fitting the insertion portion 12 into the through hole 25a of the attachment portion 25.
[0030]
In the tower surveying method using the survey target instrument 10, first, two of the survey target instruments 10 are attached to the load suspension plates 3 of the two towers 1, respectively. As shown in FIG. 4 (B), the work bar 6 is used to grip and support the gripping part 11b of the surveying target instrument 10, the insertion part 12 is fitted into the through hole 4, and the edge part of the loading plate 3 3 a is held by the holding member 13, the magnet 15 is attracted to the loading plate 3, and the surveying target instrument 10 is attached to each loading plate 3.
[0031]
As shown in FIG. 6, the light wave measuring device 7 is installed at the observation points A and B, the modulated light wave emitted from the light wave measuring device 7 is reflected by the target 14, and the modulated light wave reflected is received by the light wave measuring device 7. To do. Thus, the distance between the observation points A and B and the measurement point of each target 14 and the angle formed between the observation points A and B and the measurement point of each target 14 are measured by the light wave measuring device 7, and the cosine is calculated from the distance and angle. The distance between the targets 14 can be obtained using the theorem. As shown in FIGS. 4B and 5B, since the distance between the measurement point of the target 14 and the wire support point 2 is known, the distance is corrected and the wire support of the two towers 1 is supported. The exact distance between points 2 can be determined.
[0032]
In the pylon surveying method using the surveying target instrument 10, the surveying target instrument 10 can be safely and easily attached to the loading plate 3 of the pylon 1 using the work rod 6, so that light wave measurement can be performed without any work interruption. The container 7 can easily perform surveying between the wire support points 2 in the vicinity of the load-suspending plate 3.
[0033]
In the steel tower surveying method using the surveying instrument mounting device 20, first, two surveying instrument mounting devices 20 are respectively attached to the two steel towers 1. As shown in FIG. 5 (B), each surveying instrument mounting device 20 is supported by the work bar 6, the substrate 21 is supported on each arm 5, and each guide plate 22 is along the facing surface 5 a of each arm 5. The magnet 24 is attached to each tower 1 so as to be attracted to each arm 5. As shown in FIG. 6, the light wave measuring device 7 is installed at the observation points A and B, the distance between the targets 14 is obtained as described above, and between the wire support points 2 of the two towers 1 by correction. Can be obtained.
[0034]
In the tower surveying method using the surveying instrument mounting device 20, the surveying instrument mounting apparatus 20 can be safely and easily attached to the tower 1 using the working rod 6 even when the tower 1 does not include the load-suspending plate 3. Therefore, it is possible to easily and accurately measure the wire support point 2 near the tip of the arm 5 by the light wave measuring instrument 7 without performing a work blackout.
[0035]
Next, the operation will be described.
When attaching the surveying target instrument 10 to the loading plate 3 of the steel tower 1, the work bar 6 is used to grasp and support the holding portion 11 b, and the insertion portion 12 is fitted into the through hole 4 of the loading plate 3. The edge 3 a of the load-carrying plate 3 is pressed by the holding member 13, and the magnet 15 is attracted to the load-carrying plate 3. Thereby, it can be safely and easily attached to the steel tower 1, and the distance between the observation points A and B and the measurement points of the target 14 and the measurement points of the observation points A and B and the two targets 14 by the light wave measuring device 7. Can be measured. Since the surveying target instrument 10 can be attached to the steel tower 1 using the work bar 6, it enables surveying between the wire support points 2 without performing a work blackout.
[0036]
The surveying instrument attachment device 20 is attached to a steel tower 1 having an electric wire support portion formed by joining one end sides of two iron arms 5 and opening each other end side. When attaching to such a steel tower 1, it is held and supported by the work bar 6, the substrate 21 is supported on each arm 5, each guide plate 22 is along the facing surface 5 a of each arm 5, and the magnet 24 is each arm. It is attached to the arm 5 so as to be attracted to the arm 5. At this time, since each guide plate 22 is connected by the connecting member 23, the guide plates 22 rotate in the opposite directions at an equal angle from the parallel state. Thereby, each guide plate 22 is adsorbed at a predetermined position along the facing surface without being shifted from the facing surface of each arm 5. For this reason, the attachment portion 25 is reliably positioned at the fixed position of the arm 5, and the measurement point can be accurately set at the fixed position.
[0037]
In this way, it can be safely and easily attached to the steel tower 1, and the distance between the observation points A and B and the measurement points and the angle between the observation points A and B and the two measurement points are measured by the light wave measuring device 7. Can be measured more precisely. The surveying instrument mounting device 20 enables the surveying target instrument 10 to be attached to the tower 1 using the work bar 6 even when the tower 1 does not include the load-suspending plate 3, so that no work interruption occurs. Enables surveying between the wire support points 2.
[0038]
【The invention's effect】
In the surveying target instrument, surveying instrument mounting apparatus, and tower surveying method according to the present invention, the target can be safely and easily attached to the tower, and surveying between the wire support points is possible without performing a work blackout.
[Brief description of the drawings]
FIG. 1A is a front view, FIG. 1B is a plan view, and FIG. 1C is a right side view illustrating a surveying target instrument according to an embodiment of the present invention.
2A is a front view, FIG. 2B is a plan view, and FIG. 2C is a right side view illustrating the surveying instrument mounting apparatus according to the embodiment of the present invention.
FIG. 3 is a front view showing a target of the survey target instrument of FIG. 1;
4A is a front view and FIG. 4B is a plan view illustrating a state in which the surveying target instrument of FIG. 1 is attached to a steel tower.
5A is a front view and FIG. 5B is a plan view showing a state in which the surveying instrument mounting device of FIG. 2 is mounted on a steel tower.
FIG. 6 is an explanatory diagram of a steel tower surveying method according to an embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel tower for power transmission lines 2 Electric wire support point 3 Loading plate 4 Through-hole 5 Arm 10 Surveying target instrument 11 Base 12 Insertion part 13 Holding member 14 Target 15 Magnet 20 Surveying instrument mounting apparatus 21 Substrate 22 Guide plate 23 Connecting member 24 Magnet 25 Mounting part

Claims (6)

It is a surveying target instrument that can be attached to a load suspension plate provided on a steel tower and made of an iron plate and having a through hole,
A base, an insertion portion, a holding member, a magnet, and a target;
The base has a gripping portion;
The insertion portion has a diameter that can be fitted into the through hole, and is provided in the base portion.
The holding member is attached to the base so as to detachably press the edge of the load-carrying plate when the insertion portion is fitted into the through-hole.
The insertion portion of the base and the holding member are attached so that the magnet is attracted to the loading plate when the insertion portion is fitted into the through hole and the edge of the loading plate is pressed by the holding member. Between
The target is provided on the base,
Characteristic survey target instrument. It is a surveying instrument mounting device that can be attached to a steel tower having an electric wire support part formed by joining one end sides of two iron arms and opening each other end side,
A substrate, two guide plates, a magnet, and a mounting portion;
Each guide plate is provided to be rotatable along the mounting surface in a state perpendicular to the mounting surface of the substrate,
The magnet is provided on the outer surface of each guide plate,
The mounting portion is provided on the substrate so that a surveying target instrument can be mounted,
A surveying instrument mounting device. It is a surveying instrument mounting device that can be attached to a steel tower having an electric wire support part formed by joining one end sides of two iron arms and opening each other end side,
A board, two guide plates, a connecting member, a magnet, and a mounting portion;
Each guide plate is provided to be rotatable along the mounting surface in a state perpendicular to the mounting surface of the substrate,
The connecting member extends parallel to the mounting surface, and can be rotated to each guide plate at an interval where the guide plates can be arranged in parallel to each other at positions equidistant from the rotation center of each guide plate. Attached,
The magnet is provided on the outer surface of each guide plate,
The mounting portion is provided on the substrate so that a surveying target instrument can be mounted,
A surveying instrument mounting device.   The surveying target instrument according to claim 1, wherein the attachment part has an attachment through hole, the insertion part is fitted into the attachment through hole, and the survey target instrument is attached to the attachment part. The surveying instrument mounting device according to claim 2 or 3, characterized in that A surveying target instrument that can be attached to a load suspension plate provided on a steel tower and made of an iron plate and having a through hole, and includes a base, an insertion portion, a holding member, a magnet, and a target The base has a gripping portion, the insertion portion has a diameter that can be fitted into the through hole, and is provided in the base, and the holding member fits the insertion portion into the through hole. The edge of the loading plate is attached to the base so as to be detachably pressed by elasticity, and the magnet fits the insertion portion into the through hole and holds the edge of the loading plate with the holding member. Two surveying target instruments provided between the insertion part of the base and the holding member so as to be adsorbed to the loading plate when the target is provided on the base, respectively, The Fitted in serial through-hole, pressing by the holding member the edges of the suspended load plate, the magnet is attracted to the plate for lifting the load, mounted on the plate for hanging the load of the two towers,
A light wave measuring device is installed at the observation point, the modulated light wave emitted by the light wave measuring device is reflected by the target, the reflected modulated light wave is received by the light wave measuring device, and the light wave measuring device Measuring the distance between each target and the angle between the observation point and each target, and obtaining the distance between each target from the distance and angle;
Characteristic tower survey method. A surveying instrument mounting apparatus that can be mounted on a steel tower having an electric wire support portion formed by joining one end side of two iron arms and opening the other end side, and includes a substrate, two guide plates, a magnet Each guide plate is rotatably provided along the attachment surface in a state perpendicular to the attachment surface of the substrate, and the magnet is provided on an outer surface of each guide plate. The mounting portion is provided on the substrate, and the surveying target instrument according to claim 1 is mounted on the two surveying instrument mounting devices attached to the mounting portion, respectively, and the substrate is supported on each arm, Each guide plate is attached to two steel towers so that the magnets are attracted to each arm along the opposing surface of each arm,
A light wave measuring device is installed at the observation point, the modulated light wave emitted by the light wave measuring device is reflected by the target, the reflected modulated light wave is received by the light wave measuring device, and the light wave measuring device Measuring the distance between each target and the angle between the observation point and each target, and obtaining the distance between each target from the distance and angle;
Characteristic tower survey method.

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