JP3211738U - Overhead wire suspension - Google Patents

Abstract

An overhead wire hanging tool capable of improving safety while maintaining or improving workability is provided. An overhead wire suspension for temporarily receiving an overhead wire suspended from a beam or a brace. An overhead wire suspension (on a support side) is formed of an L-shaped member and a V-shaped member. The The L-shaped member has an L-shaped first portion 12 and an L-shaped second portion 13. The V-shaped member has a V-shaped first portion 15 and a V-shaped second portion 16. The L-shaped member and the V-shaped member are connected so as to be rotatable at an end portion of the L-shaped first portion and a corner portion 17 of the V-shaped member. The L-shaped first part 12, the L-shaped second part 13, and the V-shaped first part 15 are coupled in a triangular ring shape to constitute an attachment part 18. The V-shaped second part 16 constitutes an overhead wire suspension part 19. [Selection] Figure 1

Description

  The present invention relates to an overhead wire suspension, and more particularly to an overhead wire suspension used for a feeder replacement work or the like.

  Wires, feeder branch lines, trolley lines, overhead lines, and hanger-like train lines are supported by a plurality of support beams and braces (hereinafter referred to as braces) corresponding to the rails.

  An insulator is interposed to insulate between the feeder (overhead wire) and the brace. In other words, the feeder is supported by a brace or the like through the insulator.

  The insulator is replaced as appropriate. At that time, it is necessary to temporarily support (temporarily receive) the feeder.

  Conventionally, no special tools have been determined in the replacement work of feeders, and workers have devised each. Recently, there has been proposed a feeder temporary support (corresponding to the overhead wire hanging tool of the present application) as described in Patent Document 1.

Japanese Unexamined Patent Publication No. 2017-039353

  As described above, no special tool or the like has been determined in the feeder replacement work, and the workers have devised each (an example will be described later with reference to FIG. 4). By the way, the outline of the work procedure has been determined, and the safety has been sufficiently studied.

  However, the feeder replacement work is a high-place work and may contribute to a serious accident, so it is preferable to further consider safety.

  Note that, as a general tendency, workability may decrease when safety is emphasized. For example, in the feeder temporary support tool described in Patent Document 1, a fixing portion is fitted into a brace, and then bolted, and temporarily fixed so as to protrude outward from the brace. Since it is securely fixed, safety is improved, but the configuration is complicated and labor is required. That is, workability is reduced.

  Therefore, it is important to improve safety while maintaining or improving workability.

  This invention solves the said subject, and it aims at providing the overhead wire hanging tool which can improve safety | security, maintaining or improving workability | operativity.

  This invention which solves the above-mentioned subject is an overhead wire suspension which receives temporarily an overhead wire suspended from a beam or a brace. The overhead wire suspension includes an attachment portion that fixes the overhead wire suspension to a beam or a bracelet, and an overhead wire suspension that suspends the overhead wire via a wire. The attachment portion forms an annular shape that surrounds the beam or the brace.

  Thereby, it is possible to attach the overhead wire hanging tool to the arm metal or the like without dropping off. As a result, safety is improved. Workability is maintained.

  Preferably, in conjunction with the overhead wire suspension portion, the annular shape of the attachment portion can be opened and closed.

  This further improves safety.

  Preferably, the cross section of the beam or the brace is L-shaped. The overhead wire suspension is formed of an L-shaped member and a V-shaped member, the L-shaped member has an L-shaped first part and an L-shaped second part, and the V-shaped member is a V-shaped member. The L-shaped member and the V-shaped member are connected to be rotatable at the L-shaped first portion end portion and the V-shaped corner portion. The L-shaped first part, the L-shaped second part, and the V-shaped first part are coupled in a ring shape to constitute the attachment part, and the V-shaped second part constitutes the overhead wire hanging part.

  Thereby, the annular shape of the mounting portion surrounds the spacer without play.

  Preferably, the V-shaped second portion end portion and the L-shaped corner portion are formed to have substantially the same height in a state where the attachment portion is attached to a beam or a brace.

  Accordingly, the present invention can be applied even when the L-shaped direction of a brace or the like is inverted upside down.

  Preferably, the L-shaped member has a spacer mounting portion that allows a spacer to be mounted on the L-shaped first portion or the L-shaped second portion.

  Thereby, it can be applied even if the size of the arm metal is small.

  The overhead wire hanging tool of the present invention can improve safety while maintaining or improving workability.

Overhead wire hanger (support side) Overhead wire hangers (overhead side) Operation explanation Conventional technology Overhead wire suspension (support side) Overhead wire suspension (support side)

~Constitution~
The overhead wire temporary receiving mechanism is used to temporarily receive the overhead wire during the insulator replacement work.

  The overhead wire provisional mechanism includes an overhead wire suspension 10 (support side), an overhead wire suspension 20 (overhead side), and a wire tensioner 30. The overhead wire suspension 10 (support side) is attached to the arm metal 2 or the like. The overhead wire hanging tool 20 (the overhead wire side) provisionally receives the overhead wire 4. Both ends of the wire tensioner 30 are coupled to the overhead wire suspension 10 (support side) and the overhead wire suspension 20 (overhead side). The support such as the arm metal 2 is often L-shaped steel having an L-shaped cross section. This will be described in detail below.

  FIG. 1 is a schematic configuration diagram of the overhead wire suspension 10 (on the support side). FIG. 1A shows an annular open state, and FIG. 1B shows an annular closed state.

  The overhead wire suspension 10 (support side) is formed of an L-shaped member 11 and a V-shaped member 14.

  The L-shaped member 11 is formed by connecting two L-shaped flat plates facing each other. The L-shaped member 11 has an L-shaped first portion 12 corresponding to the L-shaped vertical direction and an L-shaped second portion 13 corresponding to the L-shaped horizontal direction. In the drawing, the L-shape is inverted upside down and left-right inverted, but for the sake of convenience, it is L-shaped.

  The end of the L-shaped first part 12 is provided with a hole. Also, a hole is provided in the end of the L-shaped second portion 13.

  The V-shaped member 14 has a V-shaped first portion 15 corresponding to a V-shaped half and a V-shaped second portion 16 corresponding to a V-shaped separate half. The V-shaped first portion 15 and the V-shaped second portion 16 are joined at a V-shaped corner portion 17 to form a V-shape. A hole is provided at the end of the V-shaped first portion 15. A hole is provided at the end of the V-shaped second portion 16. The V-shaped corner portion 17 is also provided with a hole. The end of the V-shaped second portion 16 is shaped like a snake with a sickle neck.

  Bolts are inserted through the holes at the ends of the L-shaped first portion 12 and the V-shaped corner portions 17 and are tightened by nuts. In other words, the L-shaped member 11 and the V-shaped member 14 are connected so as to be rotatable at the end portion of the L-shaped first portion 12 and the V-shaped corner portion 17.

  When the end portion of the L-shaped second portion 13 and the end portion of the V-shaped first portion 15 are separated, the triangular ring 18 is in an open state (see FIG. 1A).

  On the other hand, by rotation, the end of the L-shaped second portion 13 and the end of the V-shaped first portion 15 coincide with each other, and the hole of the L-shaped second portion 13 end and the hole of the V-shaped first portion 15 end When the bolt is inserted and tightened by the nut, the L-shaped first portion 12, the L-shaped second portion 13 and the V-shaped first portion 15 form a closed triangular ring 18 (see FIG. 1B).

  The inner edge of the triangular ring 18 corresponds to the L-shaped cross section of the arm metal 2. That is, the triangular ring 18 surrounds the arm metal 2 (see FIG. 3) almost without play and constitutes the mounting portion 18.

  Further, the V-shaped second portion 16 rotates clockwise as shown in the drawing (approximately 12: 00 → 2 o'clock), and the V-shaped second portion 16 constitutes an overhead wire suspension portion 19. The hole at the end of the V-shaped second portion 16 is an engagement hole with the wire tensioner 30.

  FIG. 2 is a schematic configuration diagram of the overhead wire hanging tool 20 (the overhead wire side).

  The overhead wire hanging tool 20 (the overhead wire side) is formed of a hook body 21 and a lid 22. The hook body 21 is slightly wide so that the overhead wire 4 can be provisionally received. The lid 22 closes the opening of the hook body 21 and prevents the overhead wire 4 from falling off. At the end of the hook body 21, an engagement hole with the wire tensioner 30 is provided.

  The wire tensioner 30 (see FIG. 3) has hooks at both ends of the wire. When the wire length is adjusted by lever operation, tension acts on the wire.

~ Operation ~
FIG. 3 is a diagram for explaining an operation related to the insulator replacement work.

  The support 1 is provided with a brace 2 (or beam) extending in the horizontal direction. The support such as the arm metal 2 is often L-shaped steel having an L-shaped cross section. For example, the width dimension and the height dimension of L-shaped steel are 65 mm or 75 mm. In the drawing, the L-shape is installed so as to be turned upside down.

  An overhead wire 4 is suspended and supported by a brace 2 via a insulator 3. Therefore, the weight of the overhead wire 4 acts on the insulator. Therefore, the overhead wire 4 is provisionally received as follows.

  The overhead wire suspender 10 (supporting object side) is attached to the arm metal 2 so that the attachment portion 18 surrounds the arm metal 2. At the same time, the overhead wire suspension 19 is also formed.

  The wire feeder 30 is attached to the overhead wire suspension portion 19, the overhead wire 4 is installed on the overhead wire suspension 20 (overhead wire side), and the wire feeder 30 is attached to the overhead wire suspension 20 (overhead wire side). This completes the preparation (see FIG. 3A).

  When the tensioner 30 is tightened by operating the lever and the overhead wire 4 is pulled up, the overhead wire 4 is provisionally received by the overhead wire hanging tool 20 (the overhead wire side). The own weight of the overhead wire 4 acts to pull the overhead wire suspension portion 19 downward. As a result, the attachment portion 18 tightens the arm metal 2 more reliably.

  On the other hand, the force acting on the insulator 3 is released. As a result, the insulator 3 can be replaced (see FIG. 3B).

  After the insulator 3 is replaced, the wire tensioner 30 is loosened, and the overhead wire 4 is supported by the newly installed insulator. The overhead wire 4 is removed from the overhead wire hanging tool 20 (the overhead wire side), and the wire tensioner 30 is removed from the overhead wire suspension tool 10 (the support side) and the overhead wire hanging tool 20 (the overhead wire side).

  At this time, since the overhead wire suspension portion 19 is released from the own weight of the overhead wire 4, the arm metal 2 tightening by the attachment portion 18 is also released. Thereby, the overhead wire hanging tool 10 (support object side) can be easily removed from the arm bracket 2.

~effect~
The effect of this embodiment will be described by comparing with the prior art.

  Conventionally, in the insulator replacement work, no special tools have been determined, and workers have devised each.

  FIG. 4 is a schematic configuration and an operation explanatory diagram showing an example of the prior art.

  The prior art overhead wire receiving mechanism includes an overhead wire suspension 110 (support side), an overhead wire suspension 120 (overhead side), and a tensioner 30. The overhead wire hanging tool 110 (support side) is attached to the arm bracket 2 or the like. The overhead wire hanging tool 120 (the overhead wire side) provisionally receives the overhead wire 4. The stringer 30 is common to the present embodiment.

  The overhead wire hanging tool 110 (support side) is a rod-shaped member, and is provided with a hook at one end and an engagement hole at the other end. The overhead wire suspension 120 (the overhead wire side) is a triangular ring member that is partially opened, and has an engagement hole at the top. Both hooks of the wire tensioner 30 are respectively attached to both engagement holes.

  The overhead wire suspension 110 (support side) is temporarily placed on the arm metal 2 horizontally, and the hook of the overhead wire suspension 110 (support side) is hooked on the arm metal 2.

  The operation of temporarily receiving the overhead wire 4 by operating the wire feeder 30 is the same as that of the present embodiment.

  Although safety has been studied in the prior art, there are the following concerns.

  Since the attachment of the overhead wire hanging tool 110 (support side) to the arm metal 2 is only locking by a hook, in the unlikely event, there is no risk of detachment.

  In particular, a large moment in the clockwise direction in the figure is generated around the hook during provisional reception. If more force than expected is applied, the hook may yield.

  In addition, when the hook is locked to the arm metal 2, the center of gravity of the overhead wire hanging tool 110 (the support side) is detached from the arm metal 2 and becomes unstable, so that more careful work is required. As a result, workability is reduced.

  Note that, as a general tendency, workability may decrease when safety is emphasized.

  On the other hand, in the present embodiment, the triangular ring 18 surrounds the arm metal 2 almost without play, thereby preventing the falling off.

  Furthermore, at the time of provisional reception, the triangular ring 18 tightens the arm 2 more securely. It is released after provisional reception and can be easily removed.

  There is no need for troublesome work to improve safety, and workability is maintained.

  On the other hand, when the overhead wire suspension 10 (support side) is temporarily placed on the brace 2, the V-shaped second portion 16 extends upward (see FIG. 1A). As a result, the center of gravity of the overhead wire suspension 10 (on the support side) is substantially on the arm metal 2 and is in a stable state. As a result, safety is improved and workability is also improved.

  As described above, this embodiment can improve safety while maintaining or improving workability.

~ Example of deformation ~
In the state in which the attachment portion 18 of this embodiment is attached to a brace or the like, the end portion of the V-shaped second portion 16 and the L-shaped corner portion (intersection of the L-shaped first portion 12 and the L-shaped second portion 13) Are formed to have substantially the same height (see FIG. 1B).

  By the way, the above description is based on the assumption that the support such as the arm metal 2 is an L-shaped steel having an L-shaped cross section and is installed so that the L-shape is inverted upside down.

  However, the brace 2 may be installed so that the L-shape is in the forward direction. Also in such a case, the overhead wire suspension 10 (support side) is attached to the arm metal 2 so that the attachment portion 18 surrounds the arm metal 2 by turning the overhead wire suspension 10 (support side) upside down. Can do.

  At that time, the overhead wire suspension portion 19 is in an appropriate position as described above (see FIG. 5).

  Another usage example will be described.

  The support such as the arm metal 2 is often L-shaped steel having an L-shaped cross section. For example, the width dimension and the height dimension of L-shaped steel are 65 mm or 75 mm.

  On the other hand, in the overhead wire suspension 10 (on the support side), the inner edge of the triangular ring 18 corresponds to the L-shaped cross section of the arm metal 2. Thereby, the triangular ring 18 surrounds the arm metal 2 almost without play.

  For example, when the width dimension and height dimension of the L-shaped steel are 75 mm, the dimensions of the overhead wire suspension 10 (support side) are designed so that the inner edge of the triangular ring 18 inscribes the L-shaped steel.

  However, for example, when the width and height of the L-shaped steel are 65 mm, the size becomes slightly smaller than the inner edge of the triangular ring 18 and play occurs.

  When play occurs, the spacer 9 is attached to the L-shaped first part 12 or the L-shaped second part 13 (see FIG. 6). A hole is provided in the center of the L-shaped first portion 12 or the center of the L-shaped second portion 13. The spacer 9 is also provided with a hole. Insert bolts into both holes and tighten the nuts.

  Thereby, even when the width dimension and height dimension of L-shaped steel are 65 mm, the overhead wire suspension 10 (support side) corresponding to the width dimension and height dimension of L-shaped steel of 75 mm can be applied.

  As described above, the usage method can be different from the basic usage example, and the versatility is high.

1 Strut 2 Arm metal 3 Insulator 4 Overhead wire 9 Spacer 10 Overhead wire suspension
11 L-shaped member 12 L-shaped first portion 13 L-shaped second portion 14 V-shaped member 15 V-shaped first portion 16 V-shaped second portion 17 V-shaped corner portion 18 Mounting portion (triangular ring)
19 Overhead wire suspension 20 Overhead wire suspension (overhead side)
21 Hook body 22 Lid 30 Tensioner 110 Overhead wire suspension (support side) Conventional technology 120 Overhead wire suspension (overhead side) Conventional technology

Claims (5)

An overhead wire hanging tool for provisionally receiving an overhead wire suspended from a beam or a bracelet,
An attachment portion for fixing the overhead wire hanging tool to a beam or a brace;
An overhead wire suspension section for suspending the overhead wire via a wire,
The attachment part forms an annular shape surrounding the beam or the brace. The overhead wire hanging tool according to claim 1, wherein the attachment portion can be opened and closed in conjunction with the overhead wire suspension portion. The beam or arm has a L-shaped cross section,
The overhead wire suspension is formed of an L-shaped member and a V-shaped member,
The L-shaped member has an L-shaped first part and an L-shaped second part,
The V-shaped member has a V-shaped first part and a V-shaped second part,
The L-shaped member and the V-shaped member are connected so as to be rotatable at the L-shaped first portion end portion and the V-shaped corner portion,
The L-shaped first part, the L-shaped second part, and the V-shaped first part are connected in an annular shape to constitute the mounting part,
The said V-shaped 2nd part comprises the said overhead wire suspension part. The overhead wire suspension tool in any one of Claims 1-2 characterized by the above-mentioned. In a state where the attachment portion is attached to a beam or a bracelet,
The overhead wire suspension according to claim 3, wherein the V-shaped second portion end portion and the L-shaped corner portion are formed to have substantially the same height. The said L-shaped member has a spacer attachment part which can attach a spacer to L-shaped 1st part or L-shaped 2nd part. The overhead wire hanging tool of Claim 3 characterized by the above-mentioned.