JP5136955B2 - Simple scaffold for air cable head - Google Patents

Description

  The present invention relates to a simple scaffold for an air cable head that can be directly assembled to the air cable head.

  Since the aerial cable head A is used at the terminal portion of the power distribution facility, for example, as shown in FIG. 19, it is installed on a predetermined mount J constructed on the ground (not in the ground). ing. The air cable head A is also installed in the substation premises (including the underground in the substation premises) and on the steel tower.

  The air cable head A is subjected to various operations such as daily inspection work, cleaning work, repair work, and lead wire opening / connecting work by the worker S.

And there are many kinds of air cable heads A whose sizes and heights differ mainly depending on the voltage class. When the air cable head A is large and has a predetermined height, 19, a plurality of single pipes are assembled in the vicinity of the aerial cable head A to install a scaffold T, and the worker S performs various operations on the aerial cable head A through the scaffold T. ing.
nothing special

  However, it is very troublesome to install the scaffold T in the vicinity of the aerial cable head A each time various operations are performed on the aerial cable head A, and to disassemble the scaffold T when the operations are completed. Yes, the work time is longer and the overall work efficiency is worsening.

  In addition, a predetermined cost is required for the installation work and the dismantling work itself of the scaffold T.

  Furthermore, since the aerial cable head A is often installed at a substation or the like, when transporting a long object such as a single pipe to assemble the scaffold T, they work close to the charging part. There is a risk that the person S may be electrocuted.

  Further, when performing various operations on the aerial cable head A, the power transmission is basically stopped, but it is natural that the power transmission stop time is shorter. However, if time is spent on the installation work and the dismantling work of the scaffold T, the power transmission stop time naturally becomes longer.

  In addition, when there is a restriction in the surrounding environment such as the air cable head A is approaching the charging part, or when there is a time restriction such as the power transmission stop time must be very short In the first place, it is difficult to install the scaffold T.

  In such a case, as shown in FIG. 20, in a state where the worker S wears the safety belt K and the rope R provided in the safety belt K is wound around the insulator portion B of the air cable head A, Put the hand of the worker S on the insulator portion B of the air cable head A, and put the foot of the worker S on the insulator portion B, so that the worker S directly rises to the air cable head A to perform various operations. May be implemented.

  However, the posture of the worker S in the air cable head A is likely to be unstable, and there is a risk that the worker S will fall.

  In addition, when a composite steel pipe (silicon rubber) is used as the aerial cable head A, it is impossible to lift and lower the worker S directly from the viewpoint of protecting the rubber part. In some cases, dedicated lifting equipment is installed, which increases costs.

  Furthermore, since the composite soot pipe (silicon rubber) has the characteristic of being lightweight, it is often installed on a steel tower. In the aerial cable head A installed on such a steel tower, since it is difficult to install the scaffold T in the first place, various situations cannot be performed on the aerial cable head A in this respect as well. ing.

  Therefore, the present invention was created in view of the existing circumstances as described above, and a simple scaffold is directly assembled to the base portion of the aerial cable head. Perform various operations on the head efficiently and safely, and easily install a simple scaffold on the aerial cable head installed on the steel tower, etc., so that workers can perform various operations on the aerial cable head. An object of the present invention is to provide a simple scaffold for an aerial cable head that can be used.

  The present invention is a simple scaffold for an air cable head that can be directly assembled to the base portion of the air cable head, and a plurality of vertical steel materials to be placed on the base portion of the air cable head, It consists of a plurality of curved horizontal steel members that connect vertical steel members, and the plurality of vertical steel members have a horizontal plate piece having a hole through which a bolt shaft of a pedestal protruding upward from a base part is removed by removing a nut. The problem mentioned above was solved by fixing to the part.

  In addition, it is a simple scaffold for the aerial cable head that can be directly assembled to the foundation part of the aerial cable head. The foundation part that is placed on the foundation part of the aerial cable head and the stacked part that is attached to the upper part of the foundation part The above-described problem has been solved.

  Further, the base portion is formed by a pair of half-circumferential frames that connect two vertical steel members and one vertical holding frame by a plurality of curved horizontal steel members, and each vertical steel member has a nut. The problem mentioned above was solved by fixing the horizontal plate piece which has the hole which inserts the bolt axis | shaft of the mount frame which has removed and protruded upwards from the base part to the lower end part.

  Further, the stacked portion is formed by a pair of half-circumferential frame bodies connecting two vertical steel members and one vertical holding frame by a plurality of curved horizontal steel members, and is formed at the lower end of each vertical steel member. The problem mentioned above was similarly solved by providing the cylinder part for a connection and connecting both members so that the cylinder part of a stacking part may be covered on the upper part of the vertical steel material which comprises a base part.

  In addition, the base part is formed by connecting two short vertical steel members with a curved horizontal steel member, and each vertical steel member is a base bolt that protrudes upward from the base part by removing the nut. The above-described problem was solved by fixing a horizontal plate piece having a hole through which the shaft is inserted to the lower end portion and providing a thin connecting rod member at the upper portion.

  In addition, the stacking part is formed by connecting two short vertical steel members with a curved horizontal steel member. Each vertical steel member has a connection hole at the bottom and a small diameter connection at the top. The bar member for connection is provided, the connecting bar member for the base part is inserted into the hole for connection of the stacking part to connect both members, and the connecting bar member for the stacking part is connected to the hole for connection of the other stacking part The above-mentioned problem was solved by inserting both the members and connecting them.

  In addition, it is a simple scaffold for an aerial cable head that can be directly assembled to the base of the aerial cable head, and is separated from a plurality of independent vertical steel materials to be placed on the base of the aerial cable head. A plurality of independent vertical steel members have a hole through which the bolt shaft of the pedestal that protrudes upward from the base part is removed by removing the nut. The problem mentioned above was similarly solved by fixing the horizontal plate piece to the lower end.

  In addition, a plurality of independent vertical steel materials are formed by continuously connecting a plurality of bar members whose diameters gradually increase from the upper side to the lower side, and by providing a step in the connected part of each member, Solved the problem mentioned above.

  Furthermore, the vertical steel material is provided with a hole for connection in the upper part of the bar member positioned below, and a plurality of bar members are continuously provided by inserting the lower part of the bar member positioned above in this hole. The problem described above has also been solved.

  Further, the horizontal steel material as a single unit to be attached between the separated vertical steel materials is formed by a curved member having a predetermined length and ring portions provided at both end portions of the curved member. Solved the problem.

  In addition, the horizontal steel material as a single unit attached between the separated vertical steel materials is formed by a curved member having a predetermined length and three consecutive ring portions provided at both ends of the curved member. In this way, the above-mentioned problem has been solved.

  In addition, the horizontal steel material as a single unit to be attached between the separated vertical steel materials is formed by a curved member having a predetermined length and a horizontally long ring portion provided at both ends of the curved member. The problem described above has also been solved.

  Further, the horizontal steel as a single unit attached between the separated vertical steels is formed by forming a curved member having a predetermined length by a large-diameter member and a small-diameter member, and the small-diameter member is compared to the large-diameter member. It was attached to a large-diameter member so as to be able to advance and retreat, and a single ring portion was provided at the ends of these large-diameter member and small-diameter member, thereby solving the above-described problem.

  According to the present invention, by attaching a simple scaffold directly to the base of the aerial cable head, an operator can efficiently and safely perform various operations on the aerial cable head via the simple scaffold. Can do.

  In addition, a simple scaffold can be easily assembled to an aerial cable head installed on a steel tower, etc., and an operator can easily perform various operations on the aerial cable head installed on a steel tower. Can do.

  Specifically, since the present invention is a simple scaffold for an aerial cable head that can be directly assembled to the base of the aerial cable head, when performing various operations on the aerial cable head, A simple scaffold is immediately assembled to the base of the aerial cable head, and workers can perform daily inspection work, cleaning work, repair work, lead wire opening / connection work, etc. Various operations can be performed quickly.

  In addition, when performing various operations on the aerial cable head, there is no need to install a scaffold in the vicinity of the aerial cable head, so there is no need to install a scaffold or dismantle the scaffold, greatly increasing the work time. It is shortened and the whole work efficiency can be improved.

  In addition, the cost for installing and dismantling the scaffold can be saved.

  Even if the aerial cable head is installed in a substation or the like, a simple scaffold is assembled to the base of the aerial cable head, so there is no need to transport a long member, and a simple scaffold is configured. There is also a possibility of avoiding the danger of an electric shock from the worker due to the member approaching the charging part.

  In addition, the power transmission stop time can be shortened as much as possible, and workers can perform various work such as daily inspection work, cleaning work, repair work, lead wire opening and connection work on the air cable head. It can be implemented quickly.

  Also, there are restrictions on the surrounding environment such as the air cable head being close to the live part, and when there are time restrictions such as very short power transmission stop time. However, a simple scaffold can be assembled to the base portion of the cable head, and an operator can reliably perform various operations via the simple scaffold.

  In addition, it is not necessary for the worker to go directly up to the air cable head to perform various operations, and the danger of the worker falling from the air cable head can be avoided.

  In addition, even when a composite steel pipe (silicon rubber) is used as an aerial cable head, a simple scaffold is assembled to the base part of the aerial cable head. Can be easily carried out.

  In addition, composite steel pipes (silicon rubber) are often installed on steel towers because of their light weight characteristics, but even in an air cable head installed on such steel towers. Since the simple scaffolding is assembled to the base portion, the worker can easily perform various operations.

  In addition, it is composed of a plurality of vertical steel materials to be placed on the base portion of the aerial cable head and a plurality of curved horizontal steel materials connecting the plurality of vertical steel materials. Since the horizontal plate piece having a hole through which the bolt shaft of the pedestal protruding upward is inserted at the lower end portion, the simple scaffold can be immediately assembled to the base portion of the air cable head.

  Specifically, each horizontal plate piece fixed to the lower end portion of the vertical steel member by removing the nut screwed to the tip end portion of the bolt shaft on the pedestal side fixing the air cable head to the pedestal Is attached to the bolt shaft on the base side from which the nut is removed. The vertical steel can be easily fixed to the base portion of the aerial cable head simply by screwing the nut into the portion.

  In addition, the simple scaffolding for the aerial cable head has a foundation part to be put on the base part of the aerial cable head and a stacking part to be attached to the upper part of the foundation part. Even if it has a certain height, an appropriate height as a simple scaffold can be constructed.

  In addition, the base portion is formed by a pair of half-circumferential frames that connect two vertical steel members and one vertical holding frame by a plurality of curved horizontal steel members, and two stacked portions are also provided. Is formed by a pair of half-circumferential frames that connect one vertical holding frame with a plurality of curved horizontal steel members. It is possible to construct a favorable working environment that surrounds the circumference.

  In addition, by connecting a cylindrical portion for connection to the lower end of the vertical steel material of the stacked portion, and connecting both members so that the upper portion of the vertical steel material constituting the foundation portion is covered with the cylindrical portion of the stacked portion. The connection state of both members can be maintained firmly.

  In addition, the base portion is formed by connecting two short vertical steel members by a curved horizontal steel member, and a thin connecting rod member is provided on the upper portion, and the stacked portion is two short length steel members. Are formed by connecting various vertical steel members with curved horizontal steel members, connecting holes are provided at the bottom of each vertical steel member, and connecting rod members with a small diameter are provided at the top, connecting the base part Insert the connecting rod member into the connecting hole in the stacking part and connect both members, and insert the connecting rod member in the stacking part into the connecting hole in the other stacking part and connect both members Therefore, a ladder-like simple scaffold can be easily assembled to the base part of the air cable head.

  In addition, it is a simple scaffold for an aerial cable head that can be directly assembled to the base of the aerial cable head, separated from a plurality of independent vertical steel members to be placed on the base of the aerial cable head. It is composed of horizontal steel as a single piece that is installed between individual vertical steel materials, and a plurality of independent vertical steel materials have horizontal holes with holes through which the bolt shafts of the pedestals that protrude upward from the base are removed by removing the nuts. Since the plate piece is fixed to the lower end portion, the vertical steel material can be easily fixed to any of the base portions of the air cable head having three types of diameters.

  In addition, a plurality of independent vertical steel materials are formed by connecting a plurality of bar members with gradually increasing diameters from the top to the bottom, and provided with a step in the connecting portion of each member. Since the horizontal steel as a single unit to be attached between the individual vertical steels is formed by a curved member having a predetermined length and ring portions provided at both ends of the curved member, they are separated from each other. A ring portion of the horizontal steel material can be inserted between them, and the ring portion of the horizontal steel material can be supported at the level difference of the vertical steel material.

  In addition, in the vertical steel material, a connecting hole is provided in the upper part of the bar member positioned below, and a plurality of bar members are continuously arranged by inserting the lower part of the bar member positioned above in this hole. Therefore, an operator can easily assemble a vertical steel material and can easily construct an appropriate height as a simple scaffold.

  Further, when a horizontal steel material as a single unit attached between individual vertical steel materials that are separated from each other is formed by a curved member having a predetermined length and three continuous ring portions provided at both ends of the curved member, Individual vertical steel materials that are fixed and separated from the base portion of an air cable head having three different diameters by assigning a preferred portion of the three ring portions to the vertical steel material of A horizontal steel material can be inserted in any of them.

  Further, the horizontal steel material is formed by a curved member having a predetermined length and a horizontally long ring portion provided at both ends of the curved member, or the curved member having a predetermined length is formed by a large-diameter member and a small-diameter member. The small diameter member is attached to the large diameter member so that it can advance and retreat with respect to the large diameter member, and even when a single ring portion is provided at the end of these large diameter member and small diameter member A horizontal steel material can be inserted between any of the separated vertical steel materials fixed to the base portion of the aerial cable head having three types of diameters.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  The present invention is a simple scaffold 1 for an aerial cable head A that can be directly assembled to a base E of the aerial cable head A.

  As shown in FIG. 1A, the in-air cable head A includes an insulator portion B having a predetermined height in a stacked state, and a conductor lead bar C is provided at the upper end portion thereof. In addition, as shown in FIG. 1 (b), the aerial cable head A includes a base E in which four horizontal leg portions D are extended at equal intervals at the lower end thereof.

  On the other hand, on the gantry J side, four bolt shafts F are arranged in a square shape. Each of the horizontal leg portions D of the base portion E is provided with a hole G through which the bolt shaft F is inserted.

  In attaching the aerial cable head A to the gantry J, first, the hole G of the horizontal leg D of the base E in the aerial cable head A is assigned to the bolt shaft F of the gantry J. Then, as shown in FIG. 1 (c), the bolt shaft F on the gantry J side is inserted through the hole G of the horizontal leg portion D from below, and the bolt shaft F protruding upward from the hole G of the horizontal leg portion D. As shown in FIG. 2, the air cable head A is fixed upright on the gantry J by screwing the nut H to the front end of the cable.

  As shown in FIG. 1 (d), there are three types of base portions E of the aerial cable head A, the diameters between the holes G through which the bolt shafts F of the horizontal leg portions D are inserted are 450 mm, 600 mm, and 800 mm. To do.

  The simple scaffold 1 for the aerial cable head A according to the present invention is different in size in order to individually correspond to the respective diameters of the base portion E of the aerial cable head A having the three types of diameters. There are a type in which three types of simple scaffolds 1 are prepared, and a type that can be used for any of the base portions E of the aerial cable head A having three types of diameters.

  For example, FIG. 3 shows a type in which three types of simple scaffolds 1 having different sizes are prepared for the base E of the aerial cable head A having three types of diameters in order to individually correspond to the respective diameters. As shown in FIG. 3, there are those in which three vertical steel members 2 are connected by a plurality of curved horizontal steel members 3.

  As shown in FIG. 4, the three vertical steel members 2 and the plurality of horizontal steel members 3 are disposed so as to cover the half circumferential surface of the insulator portion B in the air cable head A. At this time, the two horizontal steel materials 3 adjacent in the horizontal direction form a semicircular state due to their curvature.

  Moreover, as shown in FIG. 3, each vertical steel material 2 has a horizontal plate piece 4 fixed to its lower end. The horizontal plate piece 4 is provided with a hole 5 through which the bolt shaft F of the gantry J is inserted. The horizontal plate pieces 4 face each other when the three vertical steel members 2 are connected by a plurality of horizontal steel members 3. Further, the vertical steel material 2 and the horizontal steel material 3 are connected by a plurality of reinforcing materials 6 arranged in an inclined manner.

  When attaching the simple scaffold 1 to the base E of the aerial cable head A, first, the aerial cable head A is screwed to the tip of the bolt shaft F on the base J side that fixes the air cable head A to the base J. Remove three nuts H.

  Even if three nuts H are removed, the base E of the air cable head A is fixed to the base J by the bolt shaft F and the nut H at the remaining one place. The cable head A will not fall down.

  Next, each horizontal plate piece 4 fixed to the lower ends of the three vertical steel members 2 is applied to three bolt shafts F on the base J side from which the nut H is removed. 4 and 5, the three bolt shafts F on the gantry J side are inserted from below into the holes 5 of the horizontal plate pieces 4 of the three vertical steel members 2, and the horizontal plate pieces 4 A nut H is screwed onto the tip of each bolt shaft F protruding upward from the hole 5.

  In this way, the simple scaffold 1 is fixed in a state where it is erected on the three horizontal leg portions D constituting the base portion E of the air cable head A via the three bolt shafts F on the gantry J side. Is done. The simple scaffold 1 is fixed to the horizontal leg D so as to cover the half circumferential surface of the insulator portion B in the air cable head A.

  When performing various operations on the aerial cable head A, as shown in FIG. 5, the worker S ascends the simple scaffold 1 and puts his / her feet on the horizontal steel 3 of the simple scaffold 1. Further, the worker S wears a torso belt type safety belt K, and the rope R provided in the safety belt K is wound around the lever portion B of the air cable head A or the simple scaffolding 1 to cause a crash. To prevent.

  In addition, as shown in FIG. 6, the simple scaffold 1 may be configured to cover the entire circumference of the insulator portion B in the air cable head A.

  As shown in FIG. 7, the simple scaffold 1 includes a base portion 10 that is fixed to the base portion E of the air cable head A, and a stacked portion 11 that is attached to the upper portion of the base portion 10.

  As shown in FIG. 8, the base portion 10 is formed by a pair of half-circumferential frame bodies 12 having the same shape. Each half-circumferential frame 12 connects two vertical steel members 13 and one vertical holding frame 14 by a plurality of curved horizontal steel members 15. At this time, the two horizontal steel materials 15 adjacent in the horizontal direction form a semicircular state due to their curvature. Moreover, the two vertical steel materials 13 are located in the one end part and center part of a semicircle, and the vertical type | mold holding frame 14 is located in the other end part of a semicircle.

  As shown in FIG. 8, the two vertical steel members 13 have a horizontal plate piece 16 fixed to the lower end portion. The horizontal plate piece 16 is provided with a hole 17 through which the bolt shaft F of the gantry J is inserted. The horizontal plate pieces 16 face each other inward when two vertical steel members 13 are connected by a plurality of horizontal steel members 3.

  Further, the reinforcing plate piece 18 is fixed so as to contact the vertical steel material 13 and the horizontal plate piece 16. Further, the vertical steel member 13 and the horizontal steel member 15 are connected by a plurality of reinforcing members 19 arranged in an inclined manner.

  In addition, the vertical steel member 13 located at one end of the semicircle has two holes 20 and 21 in the upper part and holes 21 in the middle part and the lower part. Moreover, the vertical steel material 13 located in the center part of a semicircle has provided the one hole 20 in the upper part.

  On the other hand, the vertical holding frame 14 positioned at the other end of the semicircle is generally U-shaped by a rectangular base plate 24 and both side walls 25 fixed to both ends along the longitudinal direction of the base plate 24. Is formed.

  And the base plate 24 of the vertical holding frame 14 is fixed to the end of the horizontal steel material 15, and the vertical holding frame 14 is arranged so that the U-shaped opening portion faces outward. Further, the vertical holding frame 14 is provided with holes 26 in the upper part, the middle part, and the lower part. The holes 26 of the vertical holding frame 14 respectively match the holes 21 of the vertical steel material 13.

  As shown in FIG. 8, the pair of half-circumferential frame bodies 12 formed in this way has the vertical steel material 13 of one half-circumferential frame body 12 at the opening portion of the vertical holding frame 14 of the other half-circular frame body 12. As shown in FIG. 7, the whole is fixed in a substantially cylindrical shape. At this time, the horizontal plate pieces 16 fixed to the lower ends of the four vertical steel members 13 are arranged so as to face each other.

  Then, the bolt member 27 is inserted into the hole 26 of the vertical holding frame 14 and the hole 21 of the vertical steel member 13 which are matched, and the bolt member 27 is inserted into the nut member 28 fixed to the opposite side of the vertical holding frame 14. The pair of half-circumferential frame bodies 12 are fixed by screwing the end portions of the two.

  Further, the vertical holding frame 14 is formed slightly shorter than the vertical steel material 13, and when the pair of half-circumferential frame bodies 12 are fixed, as shown in FIG. It will be in the state which protruded and exposed toward the upper direction of the type | mold holding frame 14. FIG. At this time, the hole 20 in the upper part of the vertical steel material 13 is also exposed. And the hole 20 of the four vertical steel materials 13 is all arrange | positioned at the same height, and is used when connecting the stacking part 11 mentioned later.

  As shown in FIG. 9, the stacking portion 11 attached to the upper portion of the base portion 10 is basically configured in the same manner as the base portion 10 described above. Detailed description will be omitted by attaching the same reference numerals to.

  As shown in FIG. 9, the stacked portion 11 is characterized in that a connecting cylindrical portion 30 is provided at the lower end of the four vertical steel members 13. As shown in FIG. 10, the cylindrical portion 30 is provided with a hole 31 in the lower portion. The holes 31 respectively match the holes 20 of the vertical steel material 13.

  And as shown in FIG. 11, both members are connected so that the cylinder part 30 of the stacking part 11 may be covered on the upper part of the vertical steel material 13 which comprises the base part 10. As shown in FIG. In this connected state, the bolt member 27 is inserted into the matching hole 31 of the cylindrical portion 30 and the hole 20 of the vertical steel member 13, and the bolt member 27 is fixed to the nut member 28 fixed to the opposite side of the cylindrical portion 30. The stacked portion 11 is fixed to the upper portion of the base portion 10 by screwing the end portions.

  When attaching the simple scaffold 1 to the aerial cable head A, first, two nuts screwed to the tip of the bolt shaft F on the gantry J side that fixes the aerial cable head A to the gantry J. Remove H.

  Even if two nuts H are removed, the base E of the air cable head A is fixed to the base J by the bolt shaft F and the nut H at the other two locations. The cable head A will not fall down.

  Next, one half-circumferential frame body 12 constituting the base portion 10 is arranged so as to cover the half-circumferential surface of the insulator portion B in the air cable head A, and the two vertical steel members 13 of the half-circular frame body 12 are arranged. The horizontal plate pieces 16 fixed to the lower end portions are applied to the two bolt shafts F on the gantry J side where the nut H is removed.

  Then, as shown in FIG. 6, the two bolt shafts F on the gantry J side are inserted from below into the holes 17 of the horizontal plate pieces 16 of the two vertical steel members 13 of the half frame 12. The nuts H are screwed onto the tip portions of the two bolt shafts F protruding upward from the holes 17 of the horizontal plate piece 16.

  Next, the other two nuts H screwed to the tip of the bolt shaft F on the gantry J side fixing the aerial cable head A to the gantry J are removed.

  And the other half-circumferential frame body 12 which comprises the base part 10 is arrange | positioned so that the other half-circumferential surface of the insulator part B in the air cable head A may be covered, and a vertical steel material is mutually open in the opening part of the vertical holding frame 13 is inserted and a pair of half-circumferential frame 12 is joined. At this time, the horizontal plate piece 16 of the other half-circumferential frame 12 is positioned on the bolt shaft F from which the nut H is removed.

  Next, the other half-circumferential frame body 12 is moved downward, and the horizontal plate pieces 16 fixed to the lower ends of the two vertical steel members 13 of the half-circumferential frame body 12 are removed from the nut H. It goes to two bolt shafts F on the J side.

  Then, as shown in FIG. 6, the two bolt shafts F on the gantry J side are inserted from below into the holes 17 of the horizontal plate pieces 16 of the two vertical steel members 13 of the other half-circumferential frame 12. The nuts H are screwed onto the tip portions of the two bolt shafts F protruding upward from the holes 17 of the horizontal plate piece 16.

  In this manner, the base portion 10 is fixed in a state where it is erected on the four horizontal leg portions D constituting the base portion E of the air cable head A via the four bolt shafts F on the base J side. Is done. Moreover, the base part 10 is fixed to the horizontal leg part D so that the whole surrounding surface of the insulator part B in the air cable head A may be covered.

  Next, a pair of half-circumferential frame bodies 12 constituting the stacked portion 11 are arranged above the base portion 10 so as to cover the entire peripheral surface of the insulator portion B in the air cable head A, and one half-circular frame body 12 is disposed. The vertical steel material 13 is fixed in a state of being inserted into the opening portion of the vertical holding frame 14 of the other half-circumferential frame body 12.

  At the same time, as shown in FIG. 6, both members are connected and fixed so that the upper portion of the vertical steel material 13 constituting the base portion 10 covers the cylindrical portion 30 of the stacked portion 11.

  Further, another stack portion (11) (not shown) may be connected on the stack portion 11 according to the height of the air cable head A.

  Thus, the entire aerial cable head can be surrounded by the simple scaffolding 1 constituted by the base portion 10 and the stacked portion 11. Then, when performing various operations on the aerial cable head A, a plurality of workers S ascend the simplified scaffold 1 at the same time, and each worker S puts a hand on the horizontal steel material 15 or puts his / her feet on. Moreover, each worker S hooks the rope R provided in the safety belt K on the vertical steel material 13, the horizontal steel material 15, or the reinforcing material 19 to prevent the fall.

  In addition, as shown in FIG. 12, the simple scaffold 1 may be configured in a ladder shape that covers approximately a quarter of the lever portion B in the air cable head A.

  As shown in FIGS. 13 and 14, the simple scaffold 1 includes a base portion 40 that is fixed to the base portion E of the air cable head A, and a plurality of stacked portions 41 that are attached to the upper portion of the base portion 40. Yes.

  As shown in FIG. 13, the base portion 40 connects two short vertical steel materials 42 by a curved horizontal steel material 43.

  As shown in FIG. 13, the two vertical steel members 13 have a horizontal plate piece 44 fixed to the lower end portion. The horizontal plate piece 44 is provided with a hole 45 through which the bolt shaft F of the gantry J is inserted. The horizontal plate pieces 44 face each other inward when the two vertical steel members 42 are connected by the horizontal steel member 43. Further, the vertical steel material 42 and the horizontal steel material 43 are connected by a plurality of reinforcing materials 46 arranged in an inclined manner.

  Furthermore, a thin connecting rod member 47 is provided on the upper portion of the vertical steel material 42. A step 48 exists at the base end of the connecting rod member 47.

  As shown in FIG. 13, the plurality of stacked portions 41 attached to the upper portion of the base portion 40 are basically configured in the same manner as the above-described base portion 40, so that the configuration is stacked in the same portion as the base portion 40. The detailed description is abbreviate | omitted by attaching | subjecting the same code | symbol to the part 41. FIG.

  As shown in FIG. 13, the stacked portion 11 is characterized in that a connection hole 49 is provided in the lower part of the two vertical steel members 42.

  When attaching the simple scaffold 1 to the aerial cable head A, first, two nuts screwed to the tip of the bolt shaft F on the gantry J side that fixes the aerial cable head A to the gantry J. Remove H.

  Next, the respective horizontal plate pieces 44 fixed to the lower ends of the two vertical steel members 42 constituting the base portion 40 are directed to the two bolt shafts F on the base J side where the nut H is removed. Go. Then, as shown in FIG. 12, the two bolt shafts F on the gantry J side are inserted from below into the holes 45 of the respective horizontal plate pieces 44 of the two vertical steel members 42 constituting the foundation portion 40, The nuts H are screwed into the tip portions of the two bolt shafts F protruding upward from the holes 45 of the horizontal plate piece 44.

  In this way, the base portion 40 is fixed in a state where it is erected on the two horizontal leg portions D constituting the base portion E of the aerial cable head A via the two bolt shafts F on the base J side. Is done.

  Next, as shown in FIG. 13, the lower part of the stacked portion 41 is directed to the connecting rod member 47 of the foundation portion 40, and the connecting rod member 47 of the foundation portion 40 is inserted into the connection hole 49 of the stacked portion 41. insert. At this time, the lower end portion of the stacked portion 41 is in a state of hitting the step 48 of the base portion 40.

  Further, as shown in FIGS. 12 and 14, the lower part of the other stacked portion 41 is addressed to the connecting rod member 47 of the stacked portion 41, and the connecting rod member 47 is inserted into the connection hole 49.

  By repeating this operation, a plurality of stacked portions 41 are stacked on the upper portion of the base portion 40.

  Thus, the ladder-like simple scaffold 1 can be configured by the base portion 40 and the plurality of stacked portions 41. Then, when performing various operations on the aerial cable head A, the worker S goes up to the ladder-like simple scaffold 1 and puts his / her hand on the horizontal steel material 43 or puts his / her foot on it. Further, the worker S hooks the rope R included in the safety belt K on the vertical steel material 42, the horizontal steel material 43, or the reinforcing material 46 to prevent the fall.

  On the other hand, you may comprise the simple scaffold 1 of the type which can respond to all of the base part E of the air cable head A which has three types of diameters.

  The simple scaffold 1 of this type is composed of, for example, four independent vertical steel members 50 shown in FIG. 15 and a horizontal steel member 51 as a single body shown in FIG.

  Each of the vertical steel members 50 is formed by connecting a plurality of rod members (52, 53, 54) whose diameter gradually increases from the top to the bottom. Specifically, as shown in FIG. 15, a thin bar member 52, a middle-thick bar member 53, and a thick bar member 54 are connected from above to have a predetermined height. Further, there are steps 55 and 56 at the connecting portions of the respective members.

  The vertical steel member 50 may be configured in two stages by connecting the upper and lower bar members, or may be configured in three or more stages by connecting a plurality of bar members.

  Further, the vertical steel member 50 may be provided with a connecting hole in an upper part of a bar member positioned below, and a plurality of bar members may be provided in succession by inserting a lower part of the bar member positioned above in the hole. .

  In addition, the vertical steel member 50 has a horizontal plate piece 57 fixed to the lower end portion of the thick bar member 54. The horizontal plate 57 is provided with a hole 58 through which the bolt shaft F of the gantry J is inserted.

  For example, as shown in FIG. 16A, the horizontal steel material 51 as a single body is formed by a bending member 59 having a predetermined length and ring portions 60 provided at both ends of the bending member 59.

  When attaching the simple scaffold 1 to the aerial cable head A, first, one place screwed into the tip of the bolt shaft F on the gantry J side that fixes the aerial cable head A to the gantry J. Remove the nut H.

  Next, the horizontal plate piece 57 fixed to the lower end portion of one independent vertical steel material 50 is applied to one bolt shaft F on the gantry J side where the nut H is removed. Then, as shown in FIG. 17, one bolt shaft F on the gantry J side is inserted from below into the hole 58 of the horizontal plate piece 57 of one independent vertical steel member 50, and the hole of the horizontal plate piece 57 is inserted. A nut H is screwed onto the tip of the bolt shaft F protruding upward from 58.

  Next, one other nut H screwed to the tip of the bolt shaft F on the base J side fixing the aerial cable head A to the base J is removed, and one independent vertical steel member is removed. The horizontal plate piece 57 fixed to the lower end of 50 is applied to the bolt shaft F from which the nut H is removed.

  Then, as shown in FIG. 17, one bolt shaft F on the gantry J side is inserted from below into the hole 58 of the horizontal plate piece 57 of one independent vertical steel member 50, and the hole of the horizontal plate piece 57 is inserted. A nut H is screwed onto the tip of the bolt shaft F protruding upward from 58.

  By repeating this operation, the independent vertical steel members 50 are fixed to the base E of the air cable head A one by one.

  In this way, the four independent vertical steel members 50 are connected to the four horizontal leg portions D constituting the base portion E of the air cable head A via the four bolt shafts F on the gantry J side. Fixed in an upright state.

  Next, as shown in FIG. 17, a horizontal steel material 51 (the one shown in FIG. 16A) is attached between four independent vertical steel materials 50.

  As a procedure, first, a single ring portion 60 of the horizontal steel material 51 is respectively inserted into two adjacent vertical steel materials 50, and the single ring portion 60 is disposed at the position of the step 56. Similarly, a single ring portion 60 of the horizontal steel material 51 is also inserted into two vertical steel materials 50 that are adjacent to each other, and the single ring portion 60 is disposed at the level of the step 56.

  Next, the ring portions of the horizontal steel members 51 are placed on the two adjacent vertical steel members 50 so that each of the separate horizontal steel members 51 has the ring portion 60 of the other horizontal steel member 51 placed on one ring portion 60. 60 is inserted. Similarly, the ring portions of the horizontal steel members 51 are placed on the two adjacent vertical steel members 50 such that each of the separate horizontal steel members 51 places the ring portion 60 of the other horizontal steel member 51 on the other ring portion 60. 60 is inserted.

  And also in the position of the level | step difference 55, the ring part 60 (small diameter) of the horizontal steel material 51 is inserted, and the same mounting operation of the horizontal steel material 51 is performed.

  At this time, corresponding to the three kinds of diameters (450 mm, 600 mm, 800 mm) of the air cable head A, between the four independent vertical steel members 50 fixed to the horizontal leg D of the air cable head A Therefore, the horizontal steel material 51 (the one shown in FIG. 16 (a)) requires three types according to the separation distance. Further, each of the horizontal steel members 51 (the one shown in FIG. 16A) needs to include a ring portion 60 that engages with each step in the vertical steel member 50.

  In addition, as shown in FIG. 16B, for example, as shown in FIG. 16B, the horizontal steel material 51 as a single unit is formed by a curved member 59 having a predetermined length and a three-ring ring portion 60 provided at both ends of the curved member 59. It may be formed.

  The three continuous ring portions 60 correspond to the separation distance between the three types of vertical steel members 50 by themselves. Also, the horizontal steel material 51 shown in FIG. 16B needs to include a ring portion 60 that engages with each step in the vertical steel material 50.

  Further, as shown in FIG. 16C, horizontally long ring portions 60 corresponding to the separation distances between the three types of vertical steel members 50 may be provided at both ends of the bending member 59. At this time, inside the ring portion 60, three recessed portions 63 that hold the vertical steel material 50 are provided.

  Further, as shown in FIG. 16 (d), the bending member 59 may be formed of a large diameter member 61 and a small diameter member 62. At this time, the small-diameter member 62 is attached to the large-diameter member 61 so as to be able to advance and retract relative to the large-diameter member 61. The forward and backward movement of the small diameter member 62 relative to the large diameter member 61 corresponds to the separation distance between the three types of vertical steel members 50.

  Moreover, as shown to Fig.18 (a), you may form each vertical steel material 50 with the independent rod member which became thick gradually gradually from upper direction to the downward direction.

  As shown in FIG. 18B, the horizontal steel material 51 attached to the vertical steel material 50 is formed by a curved member 59 having a predetermined length and ring portions 60 provided at both ends of the curved member 59. Yes. The ring portion 60 forms an inner peripheral surface that comes into contact with the outer peripheral surface of the vertical steel member 50 at an appropriate position of the vertical steel member 50 when inserted into the vertical steel member 50.

  The present invention relates to a substation as a simple scaffold is directly assembled to the base portion of an aerial cable head, and an operator performs various operations on the aerial cable head efficiently and safely via this simple scaffold. In addition to the aerial cable head installed on the premises, various installation conditions such as an aerial cable head installed on a steel tower and an aerial cable head of a composite steel pipe (silicon rubber), It is also widely used in various types of aerial cable heads.

The structure of an aerial cable head is shown, (a) is a side view which shows the structure of the aerial cable head which equips the lower end part with the base part, (b) is a perspective view which shows the structure of a base part, (c) ) The bolt shaft on the gantry side is inserted into the hole of the horizontal leg from below, and the nut is screwed onto the tip of the bolt shaft protruding upward from the hole of the horizontal leg portion, and the air cable head is fixed to the gantry. The side view which shows the state which is carrying out, (d) is a top view which shows that three types, 450 mm, 600 mm, and 800 mm exist about the diameter between the holes which penetrate the bolt axis | shaft of a horizontal leg part. It is a perspective view which shows the state which has fixed the air cable head to the predetermined mount in standing shape. It is a perspective view which shows the structure of the simple scaffold provided with three vertical steel materials and the some horizontal steel material which connects these vertical steel materials. It is a perspective view which shows the state which has fixed the simple scaffold provided with three vertical steel materials and the some horizontal steel material which connects these vertical steel materials to the base part of an air cable head. The perspective view which shows the state which fixes the simple scaffold provided with three vertical steel materials and several horizontal steel materials which connect these vertical steel materials to the base part of an air cable head, and the worker is working. It is. It is a perspective view which shows the state which comprises a simple scaffold by the base part and the stacking part attached to the upper part of this base part, and has covered the perimeter of the insulator part in an air cable head with a base part and a stacking part. It is a disassembled perspective view which shows the state which connects a stacking part on a base part. It is a disassembled perspective view which shows the structure of a base part. It is a disassembled perspective view which shows the structure of a stacking part. It is a disassembled perspective view which shows the state which covers the cylinder part for connection of a stacking part on the upper part of the vertical steel material which comprises a base part, and connects both members. It is a perspective view which shows the state which covered the cylinder part for connection of a stacking part on the upper part of the vertical steel material which comprises a base part, and connected both members. It is a perspective view which shows the state which has fixed the simple scaffold comprised in the ladder shape to the base part of an air cable head. It is a disassembled perspective view which shows the structure of the base part and the stacking part attached to the upper part of a base part. It is a perspective view which shows the structure of the simple scaffold formed in the ladder shape by the base part and the some stacking part attached to the upper part of this base part. It is a perspective view which shows the structure of the four independent vertical steel materials which can respond | correspond to all of the base part of the air cable head which has three types of diameters. It shows a configuration of a horizontal steel material as a single body, (a) is a perspective view showing a configuration of a horizontal steel material in which a curved member and a single ring portion are provided at both ends of the curved member, (b) is a curved member The perspective view which shows the structure of the horizontal steel material which provided the ring part of 3 continuous arrangements at the both ends of the bending member, (c) is the horizontal type which provided the horizontally long ring part at the both ends of the bending member and the bending member The perspective view which shows the structure of steel materials, (d) is a horizontal type steel material attached so that a curved member may be formed with a large diameter member and a small diameter member, and a small diameter member can be advanced and retracted with respect to a large diameter member. It is a perspective view which shows a structure. It is a perspective view which shows the state which has fixed four independent vertical steel materials to the base part of an aerial cable head, and has mounted | wore with these horizontal steel materials to these vertical steel materials. FIG. 5 shows other shapes of a vertical steel material and a horizontal steel material, and (a) is a perspective view showing a configuration of a vertical steel material formed by a single bar member whose diameter is gradually increased from above to below, (b) ) Is a ring part that forms an inner peripheral surface that comes into contact with the outer peripheral surface of the vertical steel material at an appropriate position of the vertical steel material when inserted into the vertical steel material at both ends of the bending member. It is a perspective view which shows the structure of the horizontal steel material which has provided. It is a perspective view which shows the state which assembled the some single pipe pipe in the vicinity of the air cable head, and has installed the scaffold. A side view showing a state in which the worker is directly rising to the air cable head when the worker wears the safety belt and the rope provided in the safety belt is wound around the insulator portion of the air cable head. is there.

Explanation of symbols

A ... Air cable head B ... Insulator part C ... Conductor lead bar D ... Horizontal leg E ... Base part F ... Bolt shaft G ... Hole H ... Nut J ... Base S ... Worker T ... Scaffold K ... Safety belt R ... rope

DESCRIPTION OF SYMBOLS 1 ... Simple scaffold 2 ... Vertical steel material 3 ... Horizontal steel material 4 ... Horizontal board piece 5 ... Hole 6 ... Reinforcement material

DESCRIPTION OF SYMBOLS 10 ... Base part 11 ... Stacking part 12 ... Half circumference frame 13 ... Vertical steel material 14 ... Vertical holding frame 15 ... Horizontal steel material 16 ... Horizontal plate piece 17 ... Hole 18 ... Reinforcement plate piece 19 ... Reinforcement material

20 ... hole 21 ... hole 24 ... base plate 25 ... side wall 26 ... hole 27 ... bolt member 28 ... nut member

30 ... Cylinder part 31 ... Hole

40 ... foundation part 41 ... stacked part 42 ... vertical steel material 43 ... horizontal steel material 44 ... horizontal plate piece 45 ... hole 46 ... reinforcing material 47 ... connecting rod member 48 ... step 49 ... connecting hole

DESCRIPTION OF SYMBOLS 50 ... Vertical steel material 51 ... Horizontal steel material 52 ... Thin bar member 53 ... Thick bar member 54 ... Thick bar member 55 ... Step 56 ... Step 57 ... Horizontal plate piece 58 ... Hole 59 ... Curve member

60 ... Ring portion 61 ... Large diameter member 62 ... Small diameter member 63 ... Recessed portion

Claims (13)

  A simple scaffold for an air cable head that can be directly assembled to the base of the air cable head, and a plurality of vertical steel materials to be placed on the air cable head base, and the plurality of vertical steel materials. Consists of a plurality of curved horizontal steels to be connected, and a plurality of vertical steels are fixed to the lower end of a horizontal plate piece having a hole through which a bolt shaft of a gantry protruding upward from the base is removed by removing a nut. A simple scaffold for air cable heads.   This is a simple scaffolding for the aerial cable head that can be assembled directly to the base of the aerial cable head, and has a foundation part that can be placed on the foundation part of the aerial cable head and a stacking part that is attached to the top of the foundation part. A simple scaffold for air cable heads.   The base part is formed by a pair of half-circumferential frames that connect two vertical steel members and one vertical holding frame with a plurality of curved horizontal steel members, and each vertical steel member has a nut removed. The simple scaffolding for an aerial cable head according to claim 2, wherein a horizontal plate piece having a hole through which a bolt shaft of a base projecting upward from the base portion is inserted is fixed to a lower end portion.   The stacking part is formed by a pair of half-circumferential frames that connect two vertical steel members and one vertical holding frame by a plurality of curved horizontal steel members, and is connected to the lower end of each vertical steel member A simple scaffold for an air cable head according to claim 2 or 3, wherein both members are connected so as to cover the cylindrical portion of the stacked portion on the upper portion of the vertical steel material constituting the base portion. .   The base part is formed by connecting two short vertical steel members with a curved horizontal steel member, and each vertical steel member is inserted through the bolt shaft of the base projecting upward from the base part by removing the nut. 3. A simple scaffold for an air cable head according to claim 2, wherein a horizontal plate piece having a hole to be fixed is fixed to a lower end portion, and a thin connecting rod member is provided at an upper portion.   The stacking part is formed by connecting two short vertical steel members with a curved horizontal steel member. Each vertical steel member has a connecting hole at the bottom, and a small connecting rod at the top. Insert the connecting rod member of the base part into the connecting hole of the stacking part and connect both members, and insert the connecting bar member of the stacking part into the connecting hole of the other stacking part The simple scaffold for an air cable head according to claim 2 or 5, wherein both members are connected.   This is a simple scaffold for air cable heads that can be assembled directly to the base of the air cable head, and is separated from multiple independent vertical steel members to be placed on the air cable head base. A horizontal plate piece having a hole through which a bolt shaft of a pedestal protruding upward from a base part is removed by removing a nut from a plurality of independent vertical steel materials. A simple scaffold for an aerial cable head, characterized in that is secured to the lower end.   The plurality of independent vertical steel members are formed by continuously connecting a plurality of rod members whose diameters are gradually increased from the upper side to the lower side, and a step is provided at a continuous portion of each member. A simple scaffold for an aerial cable head.   The vertical steel member is provided with a connecting hole in an upper part of a bar member positioned below, and a plurality of bar members are continuously provided by inserting a lower part of the bar member positioned above in the hole. A simple scaffold for an aerial cable head according to 8.   The horizontal steel material as a single unit attached between the separated vertical steel materials is formed by a curved member having a predetermined length and ring portions provided at both ends of the curved member. A simple scaffold for medium cable heads.   8. The horizontal steel material as a single piece attached between the separated vertical steel materials is formed by a curved member having a predetermined length and three continuous ring portions provided at both ends of the curved member. A simple scaffold for the aerial cable head described in 1.   The horizontal steel material as a single unit attached between the separated vertical steel materials is formed by a curved member having a predetermined length and a horizontally elongated ring portion provided at both ends of the curved member. Simple scaffold for the described aerial cable head.   The horizontal steel as a single unit that is attached between the separated vertical steels is formed of a curved member of a predetermined length by a large diameter member and a small diameter member, and the small diameter member can be advanced and retracted relative to the large diameter member. The simple scaffold for an aerial cable head according to claim 7, which is attached to a large-diameter member so that a single ring portion is provided at an end of the large-diameter member and the small-diameter member.

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