JP2010208423A - Insulator replacement tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulator replacement tool improving a working efficiency with a simple structure. <P>SOLUTION: This insulator replacement tool 10 is used when an insulator suspending a suspension wire is replaced, and it includes a supporting bottom part 11 configured to be supportable on a working floor, a supporting rod 13 extended from the supporting bottom part, and a suspension wire supporting part 15 formed in the front end of the supporting rod. The supporting rod is configured to be freely extendable, and movable to the supporting bottom part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an insulator replacement tool.

  Conventionally, a suspension line has been arranged along the track above the track (above the train), and the suspension line is supported by an insulator. Since this insulator is generally formed of ceramics, it may deteriorate over time or be broken by some obstacles. Therefore, insulators need to be replaced regularly. Until now, when replacing the insulator, a wooden stick is placed between the work floor and the suspension wire, and the suspension wire is lifted by raising the work floor, and the tension of the suspension wire acting on the insulator The old insulator was removed and a new insulator was attached.

  However, the wooden support rod is long and difficult to carry, and fine adjustment is difficult when supporting the suspension line. Therefore, in order to solve such a problem, an insulator exchanger that replaces the suspension wire suspension insulator safely and simply has been proposed (for example, see Patent Document 1).

Japanese Unexamined Patent Publication No. Hei 8-164767

  By the way, the insulator exchanger of the above-mentioned patent document 1 needs to attach an insulator support fitting to the beam in the vicinity of the insulator together with the insulator and hook the hook of the insulator exchanger on the insulator support fitting and then lift the suspension wire. Therefore, the number of parts is large and expensive, and there is a problem that work is troublesome.

  Therefore, the present invention has been made in view of the above-described circumstances, and provides a lever replacement tool that can improve work efficiency with a simple configuration.

  In order to solve the above-described problems, the invention described in claim 1 is a lever replacement tool that is used when replacing a lever that suspends a suspension line. A support bar extending from the support bottom; and a suspension wire support formed at the tip of the support bar, the support bar being configured to be extendable and retractable, and the support bar being configured to support the support bottom. It is characterized by being configured to be movable with respect to.

  The invention described in claim 2 is characterized in that the support bar is provided with a handle portion capable of expanding and contracting the support bar.

  According to a third aspect of the present invention, when the support bottom is placed on the work floor, the support bar is configured to be tiltable in a range of 0 ° to 15 ° with respect to the vertical direction. It is a feature.

  The invention described in claim 4 is characterized in that the suspension wire support portion is configured to be detachable, and the suspension wire support portion is formed with a support recess corresponding to the interval between adjacent suspension wires.

  According to a fifth aspect of the present invention, the support recess is formed in the suspension line support portion in an odd number of locations in parallel, and a support recess located in the middle of the support recess is formed immediately above the support rod. It is characterized by being.

  According to the first aspect of the present invention, the suspension line can be lifted by raising the work floor while the support bottom is supported on the work floor, and further fine adjustment can be performed by extending and retracting the support bar. . Therefore, the tension | tensile_strength of the suspension wire concerning a lever can be loosened easily, and a lever can be removed easily. Therefore, the number of parts does not increase, and the efficiency of the insulator replacement can be improved with a simple configuration. Moreover, since it comprised so that a support rod could be expanded-contracted, a support rod can be shortened at the time of carrying, and it can convey easily.

  According to the invention described in claim 2, since the support bar can be expanded and contracted only by rotating the handle portion, the length of the support bar can be finely adjusted more reliably. Therefore, the insulator can be efficiently removed in a short work.

  According to the invention described in claim 3, it is not necessary to use a lever replacement tool directly under the insulator, and it is possible to support the suspension line closest to the insulator from diagonally below the insulator. Therefore, the insulator replacement tool does not get in the way when the insulator is replaced, and the insulator replacement work can be performed efficiently.

  According to the invention described in claim 4, there are several patterns in the interval between the adjacent suspension lines, but by making the suspension line support part detachable, it is only necessary to replace the suspension line support part. Any pattern can be easily accommodated. Therefore, the suspension line can be reliably supported by the suspension line support portion, and the insulator replacement work can be performed efficiently.

  According to the fifth aspect of the present invention, when there is only one suspension wire to be replaced, the suspension wire is supported by the support recess formed immediately above the support rod. Easy to maintain balance. In addition, when two suspension wires to be exchanged are close to each other, the suspension wires are respectively supported by the support recesses formed on both sides of the support recess formed immediately above the support rod. Easy to maintain balance of replacement tools. Therefore, by forming the suspension wire support portion in this manner, the insulator replacement work can be performed efficiently while the balance of the insulator replacement tool is reliably maintained.

It is a front view of the insulator replacement tool in the embodiment of the present invention. It is the A section expansion perspective view of FIG. It is the B section enlarged perspective view of FIG. It is explanatory drawing (1) of the insulator replacement | exchange method in embodiment of this invention. It is explanatory drawing (2) of the insulator replacement | exchange method in embodiment of this invention. It is explanatory drawing (3) of the insulator replacement | exchange method in embodiment of this invention. It is a front view which shows another aspect of the insulator replacement tool in embodiment of this invention.

Next, an embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the insulator replacement tool 10 is formed at a support bottom 11 configured to be supported on a work floor, a support bar 13 extending from the support bottom 11, and a tip of the support bar 13. A suspension wire support portion 15 and a handle 17 for expanding and contracting the support rod 13 are provided.

  The support bottom 11 is a member formed of, for example, reinforced glass fiber such as polyamide, and the bottom surface 11a is formed on a flat surface. That is, the bottom surface 11a is made of a material that is difficult to slip when brought into contact with the work floor F (see FIG. 4). A support bar 13 is disposed above the support bottom 11, and a rolling member 19 is disposed between the support bottom 11 and the support bar 13. The rolling member 19 is integrally formed with an adjusting screw 13a. The adjusting screw 13a is screwed into the lower end of the support bar 13 so that the support bar 13 and the support bottom 11 are connected.

  As shown in FIG. 2, the rolling member 19 is arranged in a recess 11 b formed on the upper surface of the support bottom 11 and is configured to be able to roll with respect to the support bottom 11. A support bar 13 is screwed onto an adjustment screw 13 a formed integrally with the rolling member 19, and the support bar 13 can be inclined with respect to the vertical direction in accordance with the rolling of the rolling member 19. . In addition, when the support bottom part 11 is mounted in the work floor F, it is comprised so that the support bar 13 can incline in the range of 0 degrees-15 degrees with respect to a perpendicular direction.

  The support bar 13 is a bar-shaped member made of, for example, an aluminum alloy. The support bar 13 is configured to be able to expand and contract at the expansion / contraction part 21. As shown in FIG. 3, the expansion / contraction part 21 has, for example, a screw 21a formed in the axial direction, and the expansion / contraction part 21 is supported by a support rod by turning a handle 17 having a screw part 21b to be screwed into the screw 21a. It is comprised so that it may be accommodated in 13. Therefore, the length of the insulator replacement tool 10 can be expanded and contracted. For example, the length of the insulator replacement tool 10 is configured to be adjustable to a length of 1650 mm to 2250 mm. In addition, the bellows 25 is covered with the stretchable part 21.

A suspension wire support portion 15 for supporting the suspension wire 50 is provided at the tip of the support bar 13. The suspension wire support portion 15 is made of stainless steel, for example, and is configured to be detachable from the support rod 13. The hanging wire support portion 15 has, for example, three recesses 23 for holding the hanging wire 50. The three recesses 23A, 23B, and 23C are formed in parallel to each other. The middle recess 23 </ b> B is formed immediately above the support bar 13. By comprising in this way, the suspension line 50 can be reliably supported also in the location where the three suspension lines 50 are arrange | positioned in parallel. By forming three recesses 23 in this way, for example, when only one suspension wire 50 is provided, the insulator replacement tool 10 is supported by supporting the suspension wire 50 with the middle recess 23B. Easy to keep the balance. In addition, when two suspension wires 50 are arranged in parallel, the balance of the insulator replacement tool 10 can be easily maintained by supporting the suspension wires 50 with the concave portions 23A and 23C on both sides. That is, the insulator replacement work can be efficiently performed while the balance of the insulator replacement tool 10 is reliably maintained.
Furthermore, it is possible to deal with the arrangement pattern of the plurality of suspension lines 50 by preparing suspension line support portions having different distances between the recesses 23A and the recesses 23C on both sides. That is, the suspension line 50 can be reliably supported by the suspension line support part 15 and the insulator replacement work can be performed efficiently.

  The support bar 13 is formed with a handle 17 for expanding and contracting the support bar 13. The handle 17 is formed with four handles 17a in a substantially cross shape in the horizontal direction. The support bar 13 can be expanded and contracted by rotating the handle 17a in the horizontal direction.

(Insulator replacement method)
Next, a method for replacing the insulator 70 will be described.
First, as shown in FIGS. 4 and 5, a rail car 31 on which the work floor F moves up and down is disposed below the insulator 70 to be replaced. The work floor F is raised with the support bottom 11 of the insulator replacement tool 10 in contact with the work floor F, and the suspension wire 50 is supported by the suspension wire support 15. At this time, if the rolling member 19 is tilted with respect to the support bottom 11 and the support bar 13 is slightly tilted with respect to the vertical direction so as to support the suspension wire 50, it is supported when the insulator 70 is replaced thereafter. The rod 13 does not get in the way of the worker, and the replacement work can be performed efficiently. When the number of the suspension line 50 for replacing the insulator 70 is one, the suspension line 50 is supported by the support recess 23 </ b> B in the middle of the suspension line support part 15.

  Further, the work floor F is raised so that the tension of the suspension wire 50 is not applied to the insulator 70. At this time, the final fine adjustment may be performed while rotating the handle 17 and adjusting the length of the support bar 13.

  As shown in FIG. 6, when the tension of the suspension wire 50 is not applied to the insulator 70, the bolt 71 and the nut 73 that fasten the insulator 70 are removed to remove the old (currently attached) insulator 70. A new insulator 70 is attached. When the new lever 70 is attached, the handle 17 is rotated to gradually shorten the length of the support bar 13 while slowly applying the tension of the suspension wire 50 to the lever 70.

  If there is no problem in the attachment state of the insulator 70 in a state where the normal tension of the suspension line 50 is applied, the insulator replacement operation is completed. In addition, transportation can be facilitated by keeping the support bar 13 in the shortest state after the work is finished.

  According to the present embodiment, the suspension line 50 can be lifted by raising the work floor F in a state where the support bottom 11 is supported on the work floor F, and the suspension rod 50 is extended and retracted to hang the insulator 70. The tension of the overhead wire 50 can be finely adjusted. Therefore, the tension | tensile_strength of the suspension line 50 concerning an insulator 70 can be easily loosened with a simple structure, and the insulator 70 can be removed easily. Therefore, the work efficiency of the insulator replacement can be improved with a simple configuration without increasing the number of parts of the insulator replacement tool 10. Moreover, since it comprised so that the support rod 13 can be expanded-contracted, the support rod 13 can be shortened at the time of carrying, and it can convey easily.

  Further, since the support bar 13 can be expanded and contracted simply by rotating the handle 17, the length of the support bar 13 can be finely adjusted more reliably. Therefore, the insulator 70 can be efficiently removed in a short work.

  Further, since the support bar 13 can be tilted in the range of 0 ° to 15 ° with respect to the vertical direction when the support bottom 11 is placed on the work floor F, the insulator replacement tool 10 is located directly below the insulator 70. It is possible to support the suspension wire 50 immediately adjacent to the insulator 70 from obliquely below with respect to the insulator 70. Therefore, the insulator replacement tool 10 does not get in the way of the worker when the insulator 70 is replaced, and the insulator replacement work can be performed efficiently.

  Furthermore, although there are several patterns in the interval between adjacent suspension lines 50, since the suspension line support portion 15 is made detachable, any pattern can be easily handled by simply replacing the suspension line support portion 15. can do. Therefore, the suspension line 50 can be reliably supported by the suspension line support part 15, and the insulator replacement work can be performed efficiently.

  When there is one suspension wire 50 to be replaced with the insulator 70, the suspension wire 50 is supported by the support recess 23B formed immediately above the support rod 13, thereby maintaining the balance of the insulator replacement tool 10. It's easy to do. Further, when two suspension wires 50 to be replaced with the insulator 70 are close to each other, the suspension wires 23 </ b> A and 23 </ b> C are formed on both sides of the support recess 23 </ b> B formed immediately above the support rod 13. By supporting 50, the balance of the insulator replacement tool 10 can be easily maintained. Therefore, by forming the support recesses 23 of the suspension wire support portion 15 at an odd number, the insulator replacement work can be performed efficiently while the balance of the insulator replacement tool 10 is reliably maintained.

Note that the present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention. That is, the specific materials, configurations, and the like given in the embodiment are merely examples, and can be changed as appropriate.
For example, although the present embodiment has been described using the suspension wire support portion having three support recesses formed therein, as shown in FIG. 7, the support recesses may be provided at two locations.

  DESCRIPTION OF SYMBOLS 10 ... insulator replacement tool 11 ... support bottom part 13 ... support bar 15 ... suspension wire support part 17 ... handle part (handle) 23 ... support recessed part 50 ... suspension wire 70 ... insulator F ... work floor

Claims (5)

In the insulator replacement tool used when replacing the insulator that suspends the suspension line,
A support bottom configured to be supported on the work floor;
A support bar extending from the support bottom;
A suspension wire support portion formed at the tip of the support rod,
The support bar is configured to be extendable and retractable,
An insulator replacement tool, wherein the support rod is configured to be movable with respect to the support bottom.   The insulator replacement tool according to claim 1, wherein the support bar is provided with a handle portion that can expand and contract the support bar.   3. The structure according to claim 1, wherein when the support bottom is placed on the work floor, the support bar is configured to be tiltable in a range of 0 ° to 15 ° with respect to a vertical direction. The insulator replacement tool described.   The said suspension wire support part is comprised so that attachment or detachment is possible, The support recessed part corresponding to the space | interval of the adjacent suspension wire is formed in this suspension wire support part. Coconut replacement tool. The suspension recess is formed in the suspension line support part in parallel with the odd number of places,
The insulator replacement tool according to claim 4, wherein a support recess located in the middle of the support recesses is formed immediately above the support rod.

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