JP6013402B2 - Auxiliary ladder for raising and lowering utility poles - Google Patents

Description

  The present invention relates to an auxiliary pole for raising and lowering an electric pole that is simply fixed to an electric pole and forms a scaffold at a portion where there is no scaffold in the electric pole.

  Conventionally, the first scaffolding nail attached to the lowest position in the utility pole is attached to a relatively high position so that a person other than the worker cannot easily climb up to the utility pole. To facilitate the movement to the first scaffolding nail, the worker hooks a utility pole elevating ladder on the first scaffolding nail of the utility pole, wraps the band around the utility pole and tightens it, and assists below the first scaffolding nail. Wearing a traditional scaffold.

  FIG. 4 is an explanatory diagram showing a configuration of a conventional power pole lifting auxiliary ladder 100. The power pole raising / lowering auxiliary ladder 100 is constituted by a main pole 102, a hanging metal fitting 104, a hinge 106, a scaffold 108, a steadying band 110, a band presser 112, and a non-slip plate 114.

  The main pillar 102 is constituted by three columnar members 102a, 102b, 102c having a substantially U-shaped cross section, and a hinge 106 that connects adjacent columnar members in a replyable manner. Each of the columnar members 102a, 102b, 102c includes a rectangular central surface portion and a rectangular side surface portion extending in a direction perpendicular to the long side of the central surface portion, and the long sides of the central surface portions of the columnar members are on the same straight line. The columnar members 102a, 102b, and 102c are arranged in this order so as to be positioned, and the columnar member 102a and the columnar member 102b, and the columnar member 102b and the columnar member 102c are connected by a hinge 106.

  The main column 102 can be folded at the hinge 106, and the columnar members 102a and 102c are rotated into a single long member during use. For convenience of the following description, in the state where the main column 102 is a single long member, the end on the columnar member 102a side is referred to as the upper end, and the end on the columnar member 102c side is referred to as the lower end.

  The suspension fitting 104 is made of a metal plate in which a hole having a size that can be inserted into the head of the first scaffolding nail of the utility pole is formed. The suspension fitting 104 is fixed to the upper end portion of the main pillar 102, that is, the distal end portion of the central surface portion of the columnar member 102a.

  The scaffold 108 is composed of a metal bar 108 a that is long enough for an operator to step on, and a fixture 108 b that supports the metal bar 108 a and is fixed to the main column 102. Two scaffolds 108 are fixed to the columnar member 102a near the hinge 106, one near the central columnar member 102b, and one to the lower end of the main column 102, that is, the lower end of the columnar member 102c. . The scaffold 108 extends from the side surface portion of the main column 102 in a direction perpendicular to the longitudinal direction of the main column 102 and slightly inclined toward the center surface portion side.

  The steadying band 110 includes a belt-like member 110a and a buckle portion 110b that is fixed to a base end portion of the belt-like member 110a. The belt-like member 110a is a long member made of a nylon material and wound around a utility pole. The buckle portion 110b includes a locked state that restricts movement of the belt-like member 110a in the buckle portion 110b when passing through the tip portion of the belt-like member 110a, and an unlocked state in which the belt-like member 110a can move in the buckle portion 110b. It is a metal fitting that can be switched to.

  The band presser 112 is a member in which a hole is formed in the center of the metal plate, and further, both sides of the metal plate are bent stepwise. The band retainer 112 is fixed to the surface of the central surface portion of the columnar members 102b and 102c. When the main pillar 102 is viewed from the side, the band retainer 110a can be passed between the main pillar 102 and the band retainer 112. A hole having a possible size is formed. The band-shaped member 110a of the steadying band 110 is inserted into this hole.

  The anti-slip plate 114 is a plate-like member having a high coefficient of friction that is fixed near the hinge 106 on the back surface of the main column 102. Both end portions of the non-slip plate 114 extend from the back surface of the main column 102 to the outside in the width direction of the main column 102.

  FIG. 5 is a front view showing a state where the conventional power pole raising / lowering auxiliary ladder 100 is mounted on the power pole 200. As shown in FIG. 5, the worker inserts the suspension bracket 104 into the scaffolding nail 210 of the utility pole 200 to suspend the main pole 102, winds the belt-like member 110a of the steadying band 110 around the utility pole, and the tip portion is the buckle portion. The belt-shaped member 110a is inserted into the electric pole 200 by pulling the tip of the belt-shaped member 110a. As a result, the power pole raising / lowering auxiliary ladder 100 is attached to the power pole 200. At this time, the anti-slip plate 114 is brought into pressure contact with the electric pole 200, so that the main pole 102 can be prevented from swinging, and an operator can easily ascend to the electric pole 200.

  Further, as this type of conventional technique, there is a technique described in Patent Document 1. According to Patent Document 1, a long main belt arranged so as to extend in the vertical direction along the columnar body at the time of mounting, and an appropriate interval between the main belt in the length direction which is the vertical direction of the columnar body. A plurality of scaffold members that are coupled to each other, a plurality of intermediate scaffold members that are positioned between adjacent upper and lower scaffold members and that are coupled to the main belt, and a main belt that is coupled to each scaffold member along the columnar body There has been proposed a columnar lifting tool having a lifting tool body provided with a plurality of fastening belts that can be attached to and detached from the outer periphery of the columnar member.

JP 2009-11587 A

  However, conventionally, the auxiliary pole for raising and lowering the electric pole is mounted on the electric pole using a long band-shaped member, so that when the tightening by the band-shaped member is loose, the main pole slides sideways and rattling occurs. There is a fear.

  For this reason, the operator winds all the belt-like members straight with respect to the utility pole, in other words, so as not to be slanted, and securely tightens so that no gap is generated between the main pole and the utility pole. Further, after the auxiliary pole for raising and lowering the electric pole is mounted on the electric pole, it is necessary to perform an operation in which an operator puts power in the vertical and horizontal directions to check for rattling.

  However, electric poles such as centrifugal reinforced concrete pillars or panzer mast pillars have an inclination (taper), so that the belt-like member is difficult to adhere to the electric pole. For this reason, the belt-like member moves upward and becomes easy to loosen. And since the material of a strip | belt-shaped member is a product made from nylon, it is easy to slip with respect to the utility pole surface. For this reason, when an operator raises / lowers the auxiliary pole for raising / lowering the utility pole, there is still a possibility that rattling occurs on the auxiliary ladder for raising / lowering the utility pole.

  In addition, according to the current belt-shaped member, it is difficult to determine torsion because the front and back of the belt-shaped member are not clear. Here, when the belt-like member is wound around the utility pole while being twisted, the area where the belt-like member is in close contact with the utility pole is reduced, and the main pillar is likely to swing sideways. For this reason, it is necessary to retighten the belt-shaped member again, and there is a possibility that the installation work of the auxiliary ladder for raising and lowering the utility pole may be troublesome.

  An object of the present invention is to provide an auxiliary pole for raising and lowering an electric pole that solves such problems and reduces the occurrence of rattling after being attached to the electric pole and improves the safety of workers. And

  In order to achieve the above object, the present invention has the following configuration.

  (1) A main pillar made of a long member, a suspension bracket fixed to one end of the main pillar, and suspended from a scaffolding nail provided on the electric pole, and the main pillar And an anti-sway band comprising a scaffold member fixed at a predetermined interval in the longitudinal direction, and a band-shaped member attached to the main pole and wound around the electric pole so as to press the suspended main pillar against the electric pole side And a rubber member that is slidably attached to the belt-like member and abuts against the utility pole.

  According to (1), when the steadying band is fastened to the utility pole, the rubber member is positioned at a portion facing the main pole across the utility pole, and the rubber member is brought into contact with the utility pole, whereby the steadying band for the utility pole is placed. It is possible to suppress slippage of the swinging band, and it is possible to prevent the steady rest band from being slanted. As a result, it is possible to reduce the rattling of the auxiliary pole for raising and lowering the utility pole when the operator is raising and lowering the utility pole, and it is possible to improve the safety of the operator when raising and lowering the utility pole.

  (2) The auxiliary pole for raising and lowering a utility pole, characterized in that, in (1), an indicator showing the position of the rubber member corresponding to the type of the utility pole is formed on the belt-like member.

  According to (2), it is possible to position the rubber member on a desired portion with respect to the electric pole, for example, on the opposite side of the main pole, before the steadying band is wound around the electric pole.

  (3) In (1) and (2), an auxiliary ladder for raising and lowering a utility pole, characterized in that a line extending in the longitudinal direction is formed on a surface opposite to the face facing the power pole in the strip member.

  According to (3), it is possible to easily confirm whether or not the band-shaped member is twisted by visually recognizing the line of the band-shaped member when the steadying band is wound around the utility pole.

  (4) In (1) to (3), the surface on the belt-like member side of the rubber member is curved along the shape of the utility pole.

  According to (4), the pressure from the steady band can be reliably transmitted to the rubber member, and the rubber member and the electric pole can be stably adhered.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the auxiliary | assistant ladder for raising / lowering a utility pole which implement | achieved reducing the generation | occurrence | production of the shakiness after mounting | wearing to a utility pole, and improving a worker's safety | security.

It is a front view which shows the structure of the auxiliary | assistant ladder 1 for electric pole raising / lowering in one Embodiment of this invention. It is a front view which shows the structure of the steadying band 10 which concerns on one Embodiment of this invention. It is explanatory drawing which shows the structure of this antiskid tool. It is a front view which shows the structure of the auxiliary pole 100 for the conventional utility pole raising / lowering. It is a front view which shows the state which mounted | wore the utility pole 200 with the conventional auxiliary pole 100 for raising / lowering a utility pole.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view showing a configuration of a power pole lifting / lowering auxiliary ladder 1 according to an embodiment of the present invention. FIG. 2 is a front view showing the configuration of the steadying band 10 according to the embodiment of the present invention.
The auxiliary pole raising / lowering ladder 1 according to the present embodiment uses an anti-sway band 10 instead of the anti-slip band 110 in the conventional electric pole raising / lowering auxiliary ladder 100 shown in FIG. is there. In the power pole lifting auxiliary ladder 1, the same members as those in the conventional power pole lifting auxiliary ladder 100 shown in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.

  The steady-state band 10 uses a belt-like member 12 instead of the belt-like member 110a in the conventional steady-state band 110 shown in FIG. The strip-shaped member 12 is formed by forming a line 12a and an index 12b extending in the longitudinal direction as shown in FIG. 1 on the opposite surface of the strip-shaped member 110a shown in FIG.

  The anti-skid tool 20 is attached to the belt-like member 12 and includes a mechanism that can be switched between a locked state that is fixed to the belt-like member 12 and an unlocked state that is slidable along the belt-like member 12. The anti-skid tool 20 is disposed at a position facing the band presser 112 with the electric pole sandwiched therebetween when the steadying band 10 is fastened to the electric pole, and abuts against the surface of the electric pole to regulate the movement of the belt-like member 12. is there.

  Moreover, as shown in FIG. 2, the line 12a is formed toward the front-end | tip from the site | part which arrange | positions the band presser 112 in the strip | belt-shaped member 12. As shown in FIG. In the present embodiment, the belt-like member 12 is a green member, and the line 12a is formed in white. The line 12a is not formed on the surface of the belt-like member 110a that faces the utility pole.

  As shown in FIG. 2, a plurality of indicators 12 b are formed on the belt-like member 12, and indicate a rough position of the anti-skid tool 20 corresponding to the type (diameter) of the utility pole. For example, the utility poles include composite reinforced concrete pillars, centrifugal reinforced concrete poles, panther masts, and the like. In the present embodiment, an index 12b corresponding to the composite reinforced concrete column is formed at a position 45 cm from the base end of the line 12a where the band presser 112 is disposed. Similarly, an index 12b corresponding to a centrifugal reinforced concrete pole is formed at a position of 55 cm, and an index 12b corresponding to a panther mast is formed at a position of 65 cm. Each index 12b is color-coded. In this embodiment, the composite reinforced concrete column index 12b is yellow, the centrifugal reinforced concrete pole index 12b is red, and the panther mast index 12b is blue.

  Here, there are a plurality of types with different diameters in each power pole. For example, composite reinforced concrete columns include columns with a ground diameter of 230 mm and columns with a ground diameter of 270 mm. Furthermore, the diameter of the centrifugal reinforced concrete pole and the panther mast is narrowed upward. For this reason, the index 12b is appropriately set in consideration of the tightening position of the steadying band 10 based on the diameter of the utility pole, the average value of the diameter of the utility pole, etc., which are frequently used.

  3A and 3B are diagrams showing the configuration of the anti-skid tool 20, wherein FIG. 3A is a front view, and FIG. 3B and FIG. 3C are cross-sectional views.

  The anti-skid tool 20 includes a main body portion 22, a support shaft 24, a locking portion 26, a lever portion 28, a rubber member 30, and a torsion spring (not shown).

  The main body 22 is made of plastic, and is a substantially rectangular tube-shaped member in which an elongated rectangular opening into which the band-shaped member 12 can be inserted is formed. Here, in the main body 22, the flat portion including the long side portion of the rectangular opening and facing the power pole 200 is the lower surface portion 22 b, the flat portion facing the lower surface portion 22 b is the upper surface portion 22 a, and the long side portion of the rectangular opening is A plane portion including both the upper surface portion and the lower surface portion is referred to as a side surface portion 22c. Further, in the main body portion 22, the side on which the band-shaped member 12 is inserted is referred to as an insertion side, and the side from which the band-shaped member 12 is pulled out is referred to as a drawer side. Further, in the main body 22, the utility pole 200 side is referred to as the inside, and the opposite side to the inside is referred to as the outside.

  The upper surface portion 22 a is formed at a part on the drawer side, and the insertion side is opened from the upper surface portion 22 a in the main body portion 22. In addition, extending pieces 22d and 22d extending outward are formed at the end portions on the insertion side of the side surface portions 22c and 22c. A through hole is formed at the center of the extending pieces 22d, 22d. The lower surface portion 22b is curved along the shape of the utility pole 200, and slopes are formed at the insertion side end portion and the extraction side end portion of the surface of the lower surface portion 22b facing the belt-like member 12.

  The support shaft 24 is a cylindrical shaft member, and is rotatably supported by the extending pieces 22d and 22d by being inserted into the through holes of the extending pieces 22d and 22d. The locking portion 26 includes a cylindrical portion 26a that is fixed to the central portion of the support shaft 24, and a plurality of tooth portions 26b that extend from some side surfaces of the cylindrical portion 26a. The tooth portion 26b is formed in an inverted V shape at the tip. Here, the position of the support shaft 24 is set so that the belt-like member 12 can be inserted between the portion of the cylindrical portion 26a where the tooth portion 26b is not formed and the lower surface portion 22b.

  The lever portion 28 includes a flat plate member 28a whose base end portion is fixed to the support shaft 24, and a flat plate-like operation portion 28b connected to the flat plate member 28a. That is, the lever portion 28 is rotatable about the support shaft 24 by operating the tip portion, and the locking portion 26 is rotated in conjunction with the lever portion 28.

  The flat plate member 28a is an S-shaped member that protrudes gently inward, and the operation portion 28b protrudes from the tip of the flat plate member 28a. For this reason, when the lever part 28 is rotated inward, the front-end | tip part of the flat plate member 28a is arrange | positioned in the insertion side vicinity of the upper surface part 22a, and the lever part 28 is arrange | positioned outside the upper surface part 22a. .

  Further, when the lever portion 28 is rotated inward and the flat plate member 28a is opposed to the lower surface portion 22b, the locking portion 26 is opposed to the lower surface portion 22b and the lever portion 28 is rotated outward. When the flat plate member 28a is made to face the lower surface portion 22b, the portion of the cylindrical portion 26a where the tooth portion 26b is not formed is fixed to the support shaft 24 so as to face the lower surface portion 22b.

  Here, a coil portion of a torsion spring (not shown) is inserted into the support shaft 24, and this torsion spring is always biased so as to rotate the flat plate member 28a toward the lower surface portion 22b. For this reason, the lever part 28 at the normal time is in a pivoting state inside, and is maintained in a state of being in contact with the lower surface part 22b when the flat plate member 28a is biased by the torsion spring.

  The rubber member 30 is made of a plate-like material having high adhesion, for example, an earthquake-resistant rubber material, and a plurality of ribs are erected on the surface. The rubber member 30 is fixed to the lower surface portion 22b, and a plurality of ribs on the surface oppose the electric pole 200. At this time, the rubber member 30 is bent along the shape of the utility pole 200 by bending along the lower surface portion 22b.

  Next, an operation for attaching the anti-skid tool 20 to the belt-like member 12 will be described. First, the worker rotates the lever portion 28 outward to keep the tooth portion 26b away from the lower surface portion 22b. Next, on the insertion side of the main body portion 22, the front end portion of the band-shaped member 12 is passed between the lower surface portion 22 b and the cylindrical portion 26 a, and the band-shaped member 12 is passed through a rectangular opening formed on the drawing side of the main body portion 22. Pull the tip out to the outside. At this time, the belt-like member 12 is inserted into the main body 22 so that the line 12a faces outward.

  Then, when the worker releases the lever portion 28, the lever portion 28 is rotated inward. Further, the operator pushes the lever portion 28 toward the lower surface portion 22b, thereby bringing the flat plate member 28a into contact with the belt-like member 12. At this time, the tooth portion 26b rotates and the belt-like member 12 is sandwiched between the tooth portion 26b and the lower surface portion 22b. Thereby, the anti-skid tool 20 is fixed to the predetermined position of the strip | belt-shaped member 12. FIG.

Thus, by turning the lever portion 28 inward, the antiskid tool 20 is locked, and the antiskid tool 20 is restricted from sliding along the longitudinal direction of the belt-like member 12.
Further, by turning the lever portion 28 outward, the anti-skid tool 20 is unlocked, and the anti-skid tool 20 can be slid along the longitudinal direction of the belt-like member 12.

Next, the operation | work which mounts the auxiliary pole 1 for raising / lowering the utility pole of this embodiment to a utility pole is demonstrated.
First, the worker confirms the type of the utility pole, and positions the anti-skid tool 20 at the position of the index 12b corresponding to the type of the utility pole. At this time, the worker may finely adjust the position of the anti-skid tool 20 according to the diameter of the utility pole. Then, as in the prior art shown in FIG. 5, the suspension fitting 104 is inserted into the utility pole scaffolding nail to suspend the main pole 102, and the belt-like member 12 of the steadying band 10 is wound around the utility pole, and the tip is buckle 110b. Insert into. At this time, it is confirmed that the line 12a faces outward. Furthermore, when the worker pulls the tip of the band-shaped member 110a, the band-shaped member 110a is tightened. At this time, the anti-slip plate 114 is pressed against the electric pole, and the plurality of ribs of the rubber member 30 are pressed against the electric pole. The electric pole raising / lowering auxiliary ladder 1 is attached to the electric pole by the above procedure.

  Note that the index 12b is merely a guideline. For example, when the anti-skid tool 20 is fixed at the position of the index 12b, the anti-skid tool 20 contacts a member (for example, a grounding wire pipe) attached to the utility pole. If it contacts, you may fix the anti-skid tool 20 in the position shifted | deviated from the parameter | index 12b.

  According to the present embodiment configured as described above, when the steadying band 10 is tightened with the utility pole, the rubber member 30 is positioned at a portion facing the main pillar 102 with the utility pole interposed therebetween, and the rubber member 30 is placed on the utility pole. By making the contact, it becomes possible to suppress slipping of the steadying band 10 with respect to the utility pole, and it is possible to prevent the steadying band 10 from being slanted. Thereby, it becomes possible to reduce the shakiness of the auxiliary pole 1 for raising / lowering the electric pole when the electric pole is raised / lowered by the worker, and it is possible to improve the safety of the worker when raising / lowering the electric pole.

  Moreover, according to this embodiment, since the index 12b which shows the position of the rubber member 30 corresponding to the kind of electric pole is formed in the strip | belt-shaped member 12, before winding the steadying band 10 around an electric pole, the rubber member 30 is It becomes possible to position a desired part with respect to the utility pole, for example, the opposite side of the main pole 102.

  Moreover, according to this embodiment, since the line 12a extended in the elongate direction is formed in the surface opposite to the surface opposite to the utility pole in the strip | belt-shaped member 12, when winding the steadying band 10 around a utility pole, the strip | belt-shaped member 12 is provided. By visually recognizing the line 12a, it is possible to easily confirm whether or not the belt-like member 12 is twisted.

  Moreover, according to this embodiment, since the surface of the rubber member 30 on the side of the belt-like member 12 is curved along the shape of the utility pole, the pressure from the steady band 10 can be reliably transmitted to the rubber member 30. It becomes possible, and it becomes possible to make the rubber member 30 and the utility pole adhere firmly.

  Further, according to the present embodiment, since the lower surface portion 22b of the anti-skid tool 20 is curved along the shape of the utility pole, the deterioration of the belt-shaped member 12 due to friction between the edge portion of the lower surface portion 22b and the belt-shaped member 12 occurs. Can be prevented.

  As mentioned above, although embodiment of this invention was described, embodiment of this invention is not restricted to what was mentioned above. For example, in the above-described embodiment, the rubber member 30 has a plate shape, and the surface of the rubber member 30 on the side of the belt-like member 12 is curved by being fixed to the lower surface portion 22b. You may form so that the surface of 30 strip | belt-shaped member 12 side may curve from the beginning. Further, in the above-described embodiment, the rubber member 30 is fixed to the lower surface portion 22b so that the surface of the rubber member 30 on the power pole side is curved, but it may be planar.

Further, as the index 12b, for example, a scale in 1 cm increments may be formed on the belt-like member 12. As a result, the operator measures the circumference of the part where the steadying band 10 is wound around the utility pole with a measure or the like, and slides to the position of the scale of the belt-like member 12 corresponding to half the length of the circumference. A stop 20 may be positioned. Thereby, it becomes possible to arrange | position the antiskid tool 20 in the position which opposes the band presser 112 on both sides of an electric pole regardless of the kind of electric pole. Moreover, it is possible to use both the index 12b and the line 12a.
In the embodiment described above, one anti-skid tool 20 is attached to the belt-like member 12, but the present invention is not limited thereto, and a plurality of anti-skid tools 20 may be attached.

DESCRIPTION OF SYMBOLS 1 Auxiliary ladder for electric pole raising / lowering 10 Stabilizing band 12 Band-shaped member 12a Line 12b Index 20 Anti-skid tool 22 Main body part 22a Upper surface part 22b Lower surface part 22c Side surface part 22d Extension piece 24 Support shaft 26 Locking part 26a Cylindrical part 26b Tooth part 28 Lever part 28a Flat plate member 28b Operation part 30 Rubber member 102 Main pillar 102a, 102b, 102c Columnar member 104 Hanging bracket 106 Hinge 108 Scaffolding 108a Metal rod 108b Fixing bracket 110a Band-shaped member 110b Buckle portion 112 Band retainer 114 Stop plate

Claims (3)

A main pillar made of a long member;
A hanging bracket that is fixed to one end of the main pillar and hangs down the main pillar by hooking on a scaffolding nail provided on the power pole,
A scaffold member fixed at a predetermined interval in the longitudinal direction with respect to the main pillar;
An anti-sway band having a band-like member attached to the main pole and wound around the electric pole so as to press the suspended main pole against the electric pole side;
A rubber member that is slidably attached to the belt-shaped member and abuts against the power pole,
An auxiliary ladder for raising and lowering a utility pole, characterized in that an indicator indicating the position of the rubber member corresponding to the diameter of the utility pole is formed on the belt-like member . Wherein the opposite surface of the opposing surfaces of the electric pole in strip, claim 1 Symbol placement of utility poles lifting auxiliary ladders, characterized in that the line extending in the longitudinal direction is formed. The auxiliary ladder for raising and lowering a utility pole according to claim 1 or 2 , wherein a surface of the rubber member on the side of the belt-like member is curved along the shape of the utility pole.

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