JP2007101602A - Device and method for installing caution sign - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device and method for installing a caution sign by which the caution sign can be installed simply and speedily. <P>SOLUTION: The device includes: at least two poles 1 erected straightly; a thread or the like 2 supported by the poles and stretched between the poles; and the caution signs 3 attached to the thread or the like. As for the thread or the like, silken gut can be preferably used. The caution sign installation method includes: a step of attaching a weight on one end of the thread or the like and fly the weight; a step of making the thread or the like extended, by flying the weight, between at least two poles erected or can be erected nearly vertically to be supported in the both end areas by the respective poles and to be stretched; and a step of attaching the caution signs. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a caution sign erection device and a caution sign erection method that are simple and easy to erection.

  When building a building, a material carrying-in / out operation using a crane is often performed. When materials are carried in and out using such a crane directly under or near the power transmission line, the crane arm contacts the power transmission line and cuts it, or an electric shock or power outage occurs. There is a risk that electromagnetic induction injury may occur in operators and workers. For this reason, an electric wire caution sign is attached to a protection line installed in parallel to the proximity position of the transmission line.

  This electric wire caution sign is a sign flag or the like that is installed at a predetermined distance from the power transmission line in parallel and directly under the power transmission line. When carrying out material loading / unloading work directly under or near the power transmission line, The purpose of this is to visually alert the operator or operator to prevent the crane arm from approaching the overhead transmission line. Such a warning sign is proposed in Patent Document 1, for example.

However, if it is possible to discuss in advance the construction work in the vicinity of the transmission line between the power company that performs maintenance management of the transmission line and the construction contractor, the power company will use a wire warning sign before the construction starts. Construction can be done and safety measures can be taken, but there are many cases where it is not possible to negotiate in this way. If prior consultation between the construction contractor and the electric power company is not possible, it is difficult to detect that the construction work will be carried out by patrol, and there is a sudden request from the construction contractor regarding the construction work. In some cases, it may not be possible to respond immediately. In addition, it may be difficult to construct a wire warning sign on the transmission line in terms of the area where the transmission line is laid or the interval between transmission towers.
Therefore, there has been a demand for an electric wire caution sign that can cope with such a sudden contact from a construction contractor and can be installed easily and in a short time.

Japanese Utility Model Publication No. 6-60229

  In view of the above circumstances, an object of the present invention is to provide a caution sign erection device and a caution sign erection method that can be erected easily and in a short time.

  According to the first aspect of the present invention, the object includes at least two struts provided upright and yarns stretched between the struts, and a caution sign is attached to the yarns. This is achieved by a caution sign erection device characterized in that.

According to the second aspect of the present invention, the above object is the caution sign erection device provided by the first aspect of the present invention, wherein a weight is attached to one end of the thread and the weight is caused to fly; The yarns stretched between at least two struts that are erected or can be erected substantially vertically by the flying of the weight are supported by the struts at both end regions thereof, and are stretched. This is achieved by a method for constructing a caution sign, which comprises a step and a step of attaching a caution sign.

  According to the caution sign erection device and the caution sign erection method of the present invention, since the caution sign erection device has a simple structure, the caution sign can be erected easily and in a short time.

  The yarns used in the present invention are usually referred to as yarns or strings. The weights of the caution signs themselves, the wind pressure applied to the caution signs, the transfer in the caution sign device, and the extension of the threads There is no particular limitation as long as it has a toughness that can withstand the tension, but a flexible and lightweight one is preferred. The weight of the yarn is usually 0.05 to 30 grams per meter, preferably 0.05 to 20 grams, and more preferably 0.05 to 10 grams. In general, the diameter is 0.1 to 5 millimeters when the yarn has a circular cross section, and the tensile strength (straight line strength) is 4 kilograms or more. The yarn may be a single yarn or a monofilament and a twisted yarn.

  The single yarn or monofilament includes, for example, an untwisted yarn that is discharged from a thin die of an extruder. Moreover, any of natural fibers and synthetic fibers may be used. The most preferred representative example is Tegu (Tenji yarn). Tegusu (Tengu Yarn) is a thick filament used for fishing, and is obtained by acid-treating a thread taken from the silk gland of a larva of Tengu-san, a large moth of the Saturniidae family. Further, it may be a synthetic resin yarn having the same strength and quality as natural tengu (tengu yarn), which is sometimes referred to as “tegu”. Monofilaments and twisted yarns made of synthetic resin such as nylon, polypropylene and polyester, and twisted yarns made of natural fibers such as cocoon yarn (squid yarn) can be suitably used.

  At least two struts used for tensioning the yarns are provided upright on the ground. Here, the term “upright” includes not only the case where the column is erected vertically but also the case where the column is inclined. When the column is erected and tilted, the inclination angle can be set as appropriate depending on the presence of an obstacle above the column erection position, but is preferably set to 30 degrees or less with respect to the vertical direction.

  Such a strut is not particularly limited as long as it does not buckle in the middle due to wind pressure or the like. For example, an aluminum tube; made of fiber reinforced resin in which glass fiber, carbon fiber, aramid fiber or the like is mixed into the resin In addition to metal pipes such as iron pipes and copper pipes, metal bars such as iron bars, copper bars and aluminum bars, and the above-mentioned fiber reinforced resin bars can be used. Among these, it is preferable to use a light and high-strength material in consideration of workability and handling properties. For example, an aluminum tube or a fiber reinforced resin tube may be used. In order to reduce the weight of the support itself, when a metal rod is used, the cross-sectional area is reduced, and when an iron pipe is used, a thin wall or the like may be used.

  The support column is preferably telescopic, but it may be of a fixed length. As the support column that can be expanded and contracted, for example, a plurality of tubes having a small diameter are sequentially inserted in a tube having a predetermined diameter, and the tubes having a small diameter are sequentially pulled out during use. In the upper end portion of the tube body, a type in which the inner tube body and the upper end of the outer tube body are fixed by a fixture can be used. As a fixing method, for example, a screw hole is drilled in the upper peripheral region of the outer wall of the outer tube body, and a bolt, a thumbscrew, or the like is screwed into this and the inner tube is pressed and fixed. it can. Alternatively, a fixing tool such as a bolt may be inserted (penetrated) into a hole formed in each of the large diameter tube and the small diameter. In this way, the strut is adjusted to an arbitrary height by fixing the outer tube body and the inner tube drawn out from the hollow tube in a sequentially engaged state. You can adjust the height. In addition, the cross-sectional shape in the direction perpendicular to the length direction of the tube is not limited to a circle, and may be a rectangle, an ellipse, or the like.

  Moreover, you may make it form a support | pillar by joining the constituent material of the predetermined length which provided the navel in one end, and provided the recessed part which can fit the said navel in the other end. By preparing a plurality of cocoon types having different lengths and combining them, the height of the component can be adjusted roughly, and the tension height of the yarns can also be adjusted.

  In addition, a power transmission tower or a power pole can be substituted for at least one of the two columns. When a power transmission tower is used as a support, it is preferable to fix one end of the above-mentioned yarns to a steel tower constituent material or a power pole at a distance away from the transmission line erection position without being affected by electromagnetic induction.

  The yarn is fixed to the struts or supported so as to be freely movable, and is stretched between the struts. There are no particular restrictions on the location where the thread is fixed to the strut, and it can be the upper end (top) portion or the middle portion thereof, but the yarn is preferably fixed or supported at the upper end. In order to fix the thread to the support, it is fixed to the support, for example, directly or by being tied to a thread fixing tool fixed to the support. For example, a ring or a hook is used as the thread fixing tool.

  In order to detachably attach the thread to the support, for example, it is possible to attach a pulley to the top of at least one of the supports and insert the thread into the groove of the pulley. In this case, at least one end of the yarn is a free end, and a weight can be attached to the free end, or the yarn can be taken up by a take-up reel attached to a support post. When attaching a weight to the free end, it is preferable that the number of attached weights can be changed. By supporting the yarns so as to be freely movable in this manner, tension adjustment after the yarns are tensioned becomes easy.

  The support can be fixed to the ground by providing an insertion member at the bottom of the support and inserting it into an insertion hole formed in the ground. Moreover, in order to make a support | pillar stand more stably, a support line and a support pile can be used. That is, prepare a plurality of support lines and support piles, connect one end of each support line to a fence provided in the right direction at the appropriate height of the column, and support the other end. They are fixed to the top of the piles and the support piles are arranged radially from the columns and driven into the ground. It is preferable that a tensioning device such as a turnbuckle is interposed between each branch so that each branch can be individually tensioned and adjusted.

  In addition, the support column can be maintained in a state where the support plate is fixed upright by using the above-described support or the like while the support plate is fixed to the lower part of the support column and the support plate is in contact with the ground. . The insertion member may be fixed to the bottom surface of the floor plate, and a column fixing column is fixed to the top surface, and the column is fitted to the column so as to stand upright. May be. Note that a caster or the like can be detachably fixed to the floor plate so as to be easily transported when transporting the support column.

  In order to increase the visibility of the presence of the support, it is preferable to paint the support surface in red or in a striped pattern of yellow and black.

  The caution mark may be attached to the thread before or after the thread is tensioned, but is preferably attached before the thread is tensioned. As the caution sign, a lightweight one is used. For example, a water-resistant paper or cloth flag or a synthetic resin or aluminum thin plate is used. In the case of a flag made of paper or cloth, it is preferable to back up or to attach a weight to the lower end in order to prevent deformation due to wind or the like.

  The caution sign erection device of the present invention is easy to construct because of its simple structure. Therefore, it can be installed either on a building under construction, on a land with an existing building, or on a terrain without a building. Caution If the building under construction or the existing building becomes an obstacle when installing the sign erection device, attach a weight to the free end of one end of the thread, fly the weight, and both ends of the thread , The yarns can be supported and stretched by supporting columns which are erected substantially vertically or can be erected. The caution sign can be attached either before or after the yarn is stretched between the struts. In the former case, it is preferable to attach a warning sign to the yarns in advance. The method of flying the weight is not particularly limited, for example, by gripping the thread with the weight attached to one end of the support, and swinging the support in the vertical direction in the manner of throwing and flying the weight by centrifugal force. There may be. Since the weight of the weight is light, it is sufficient for the weight to be light, but it is preferable that the weight be softer. Preferable representative examples of such weights include a hard tennis ball or a soft tennis ball, or a baseball soft ball.

  The present invention will be described more specifically and in detail by the embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings. Note that “up”, “down”, “left”, and “right” mean “up”, “down”, “left”, and “right” in the drawings.

  FIG. 1 is a diagram showing an example of an embodiment of a caution sign erection device of the present invention. FIG. 2 is a diagram showing another embodiment of the caution sign erection device of the present invention.

  A thread 2 is stretched between the two struts 1, 1, and attention signs 3, 3,... Are attached to the thread 2. Tegusu is used as thread 2. The caution sign 3 is a rectangular synthetic resin thin plate.

  The strut 1 is connected to three pipes having different diameters, and is sequentially formed from the lower side into a first-stage pipe body 11, a second-stage pipe body 12, and a third-stage pipe body 13, A second stage tube body 12 is inserted into the stage tube body 11, and a third stage tube body 13 is inserted into the second stage tube body 12. The first-stage tube body 11 and the second-stage tube body 12 are respectively provided with fixtures 111 and 121 at their upper ends. The fixtures 111 and 121 are bolts that are drilled in the upper end regions of the peripheral walls of the first-stage tube body 11 and the second-stage tube body 12 and screwed into screw holes in which screws are engraved. Although FIG. 1 shows a support column made up of three tubes, the present invention is not limited to this. For example, it may be composed of three to eight tubes. If the number of tubes constituting the support is small, this may hinder transportation, but if the number of tubes is large, the length of each tube will be shortened. It becomes convenient.

  The third-stage tube body 13 is pulled out from the upper end of the second-stage tube body 12, and is fixed in a state where the third-stage tube body 13 is extended by the fixture 121 in the upper end region of the second-stage tube body 12, and the second The step tube body 12 is pulled out from the upper end of the first step tube body 11, and the second stage tube body 12 is fixed in an extended state by the fixture 111 in the upper end region of the first stage tube body 11. By changing the lengths of the second-stage tube body 12 and the third-stage tube body 13 drawn from the first-stage tube body 11 and the second-stage tube body 12, respectively, the column 1 can be raised to an arbitrary height. Can be adjusted. The support column 1 is erected vertically, and the first-stage tube body 11, the second-stage tube body 12, and the third-stage tube body 13 are aluminum tubes or fiber-reinforced resin tubes. Further, the surfaces of the columns 1 and 1 are painted red.

  A pulley 14 is attached to the top of the column 1, that is, the top of the third stage tube 13 so as to protrude in the tension direction of the bottom 2. The bush 2 is inserted in the groove of the pulley 14 so as to be freely movable. A take-up reel 113 is attached to the lower part of the first stage tube 11 of the right column 1. In addition, a heel is provided as an insulator 112 in the upper end region of the left third stage tube. One end of the tooth 2 is fixed to the left column 1 by the frame fixing tool 112, passes through the pulley 14, the other end is a free end, and is wound around the take-up reel 113 of the right column 1. .

  A support base 4 is connected to the lower end edge of the support column 1, and a support cylinder 41 is provided upright on the upper surface of the support base 4. The lower end of the support column 1 is inserted and fixed to the support tube 41. An insertion member 42 that can be inserted into an insertion hole 60 formed in the ground surface is provided below the support 4. In addition to the insertion member 42, a caster or the like may be fixed to the lower side of the support base 4 so that the column 1 can be moved. By making the support column 1 movable in this way, there is an advantage that it is easy to transport the support column 1 to the construction site.

  In order to fix the pillars 1 and 1 having a predetermined position and height in an upright state, the support lines 5, 5,... Are stretched between the pillars 1 and the ground. Each of the support lines 5 can be fixed by driving a support pile 52 and binding the upper end thereof. A tensioner 51 is provided in the middle of the support 5. A turnbuckle is preferably used as the tensioning device 51. By rotating this turnbuckle, the support line 5 can be stretched.

  FIG. 2 is a diagram showing another embodiment of the caution sign erection device of the present invention. In this figure, reference numeral 80 denotes a power transmission tower, 81 denotes an overhead ground wire, and 82 to 85 denote power transmission lines. As shown in FIG. 2, when materials are loaded and unloaded by a crane for construction of a building 90 immediately below a transmission line in an area close to the transmission tower, the transmission tower 80 is used as one column, and the column in the above embodiment. Can be provided upright on the ground and used as the other support column, so that the flag 2 can be stretched between the columns and the flag flags 3, 3,. One end of Tegusu 2 is preferably fixed to a frame material of a predetermined height of the transmission tower. Further, the installation method of the other column and the extension method of the shoe 2 are the same as described above.

  As described above, the caution sign erection device of the present invention can be erected easily and in a short time with a simple structure. For example, when a construction work is performed directly under or around a power transmission line and materials are carried in and out by a crane, the apparatus of the present invention is installed at a position where the crane operator or operator can most easily see it. can do. When installing the caution sign erection device of the present invention, the device of the present invention can be easily erected using the caution sign erection method of the present invention even if there is an obstacle such as a building between the installation positions of the columns. . Also, even if the yarn is cut, it will not lead to a serious accident.

It is a perspective view which shows an example of embodiment of the caution sign construction apparatus of this invention. It is a figure which shows another embodiment of the caution sign construction apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 11 1st stage pipe body 111 Fixing tool 112 Thread fixing tool 113 Take-up reel 12 2nd stage pipe body 121 Fixing tool 13 3rd stage pipe body 14 Pulley 2 Threads 3 Caution sign 4 Laying board 41 Cylinder for column fixing 5 Supports 51 Turnbuckle 52 Support pile

Claims (11)

  A caution sign erection device comprising at least two struts provided upright and yarns supported and stretched on the struts, and a caution sign attached to the yarns.   The caution sign erection device according to claim 1, wherein the yarn has a weight per unit length of 0.05 to 30 grams per meter.   The caution sign erection device according to claim 1 or 2, wherein the yarns are tengu threads.   The caution sign erection device according to any one of claims 1 to 3, wherein a tension height of the yarns is variable.   The caution sign construction device according to any one of claims 1 to 4, wherein the yarns are supported on an upper end of the support column.   The caution sign erection device according to any one of claims 1 to 5, wherein the support column is made of an aluminum tube or a fiber reinforced resin tube.   The caution sign erection device according to any one of claims 1 to 6, wherein the caution sign can be detachably fixed to the threads.   The caution sign erection device according to any one of claims 1 to 7, wherein a weight is attached to one end of the yarn and the weight is caused to fly, and the weight is caused to fly or can be erected substantially vertically. The yarns stretched between at least two struts are supported by the struts at both end regions thereof and stretched, respectively, and a caution sign is attached. Caution sign erection method.   The caution sign erection method according to claim 8 or 9, wherein the yarns are supported and stretched at the upper ends of the columns in both end regions.   The caution sign erection method according to any one of claims 8 to 10, wherein the weight is a tennis ball. The caution sign erection method according to any one of claims 8 to 11, wherein the caution sign is attached to a thread before or after being stretched between struts.

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