JP3951234B2 - Lifeline fitting - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifeline attachment, and in particular, a lifeline for fixing a lifeline worn by an operator when performing sleeper replacement or inspection work on a railroad rail laid in a high place where there is a risk of falling. It relates to a fixture.
[0002]
[Prior art]
In work such as sleeper replacement or inspection performed on a bridge with railroad rails installed, a temporary scaffolding is installed to prevent the operator from accidentally falling off the bridge, while the operator connects the lifeline to the body and The other end is fixed to a guardrail or the like. However, it is necessary to newly install a fixed object for fixing the lifeline in a place where there is no appropriate fixed object such as a guardrail. As a means for fixing this lifeline, a railroad rail work safety device 50 as shown in FIG. 5 has been proposed. The railroad rail work safety device 50 includes a plurality of columns 52 detachably provided on clamp means 51 attached in advance to a plurality of sleepers W to which railroad rails (not shown) are fixed, The rope 54 suspended between the upper parts and stretched by the fixing means 53 in the rail rail laying direction, the lifeline 56 movably connected by the hook 55 in the extending direction of the rope 54 and the body of the worker M A safety belt 57 for connecting to the lifeline 56 is provided (for example, see Patent Document 1).
[0003]
According to the railway rail high-altitude work safety device 50, the safety belt 57 attached to the body of the worker M is connected to the rope 54 by the hook 55 via the lifeline 56. It is possible to reduce the movement resistance when moving in the extending direction. In addition, since the rope 54 is set to a height of about 2 m from the sleepers W, even if the worker M accidentally falls and is suspended from the lifeline 56, the hand of the worker M Since there are things that can be grasped by hands such as sleepers W and railroad rails in the reachable range, the worker M can be easily rescued.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-108916 (page 4-5, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, in order to install the railroad rail work safety device 50, the clamp means 51 is first attached to the sleeper W, and at least two pillars 52 having a length of about 2 m are erected by the clamp means 51 and then the pillars 52 are placed. The rope 54 must be stretched between them, and the apparatus itself is not only large, but also the installation work is troublesome. Further, since the support column 52 is fixed to the sleeper W by the clamp means 51, not only when changing the work section, but also when the sleeper W to which the support column 52 is fixed is to be replaced, the fixing position of the support column 52 In this case, there is a problem that the rope 54 and the support column 52 must be once removed and the above-described installation work must be performed again.
[0006]
This invention is made | formed in view of the said subject, Comprising: It aims at providing the lifeline attachment which can be easily installed in a railroad rail and can change the fixing place of a lifeline easily.
[0007]
[Means for Solving the Problems]
To achieve the above object, lifeline fitting according to claim 1 is a lifeline fixture installed in laid railway rail heights, the train in a direction perpendicular to the longitudinal direction of the railway rail The rail part on the other end side of the rod-like member having a fitting part fitted into the outer side of the base part of the rail, and being connected and fixed to the holding part body so as to be detachable and close to each other and having a male screw part on one end side A movable holding part having a hooking part that passes under the base part of the rail and hooks it inside, a support bar provided so as to protrude upward from the main part of the holding part, and can be pulled into and out of the support bar from above And a life rod made of a hollow steel pipe having a lifeline attachment part on the outside, and the clamping part main body and the movable clamping part are fixed to the railroad rail by screwing a fastening screw to the male screw part. And The Kikyoji body when secured to the railroad rail, the upper end of the support rod is characterized becomes possible lower than the head portion of the railway rail.
[0008]
The lifeline fitting according to claim 2 is characterized in that in the lifeline fitting according to claim 1, the outside of the life stick is covered with an insulating material member.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, lifeline fittings according to embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the lifeline fitting 1 includes a sandwiching portion main body 3 having a fitting portion 2 that is fitted to the outside of a base portion B of a railroad rail R in a direction orthogonal to the longitudinal direction of the railroad rail R, A movable holding part 5 having a hooking part 4 that is connected and fixed to the holding part main body 3 so as to be detachable and close to the inside of the base part B through the lower part of the base part B of the railway rail R, and the holding part main body 3 A support rod 6 provided so as to protrude upward, and a life rod 8 made of a hollow steel pipe 11 which can be inserted into and withdrawn from above the support rod 6 and has a lifeline attaching portion 7 on the outside.
[0010]
As shown in FIG. 2, the sandwiching section main body 3 is arranged on one side surface of a rectangular parallelepiped having an overall shape, and the sandwiching section main body 3 is disposed outside the base portion B of the rail R in a direction perpendicular to the longitudinal direction of the rail R. A fitting rod 2 for fitting in and an insertion hole 9 for inserting the movable holding portion 5 are provided, and a support bar 6 is provided on the upper surface 3a so as to protrude upward. The fitting portion 2 is formed in a concave shape substantially the same as the outside of the base portion B of the railroad rail R so as not to rattle when fitted into the base portion B of the railroad rail R. The insertion hole 9 is formed below the fitting portion 2 so as to pass through the movable holding portion 5.
[0011]
The support rod 6 is a vertically long columnar member provided so as to protrude upward on the upper surface 3a of the sandwiching section main body 3, and a part thereof is inserted into the sandwiching section main body 3 and fixed by welding or the like. . The height of the support bar 6 from the upper surface 3a of the sandwiching section main body 3 can stably support the life stick 8 inserted from above, and when the sandwiching section main body 3 is fitted into the base portion B of the rail R. The upper end of the support bar 6 is set to be lower than the head portion of the rail R. That is, even if the clamping part main body 3 and the movable clamping part 5 are installed in the base part B of the railroad rail R, the support bar 6 has a height that does not hinder the traveling of the train. Further, the diameter of the support rod 6 is substantially equal to the diameter of the inner space of the life rod 8 so that the life rod 8 can be easily inserted and pulled out from above and can be stably supported. It is set as follows.
[0012]
The movable holding part 5 is fixed by welding or the like to a bent hook part 4 for hooking the inner side of the base part B of the rail R on the other end side of a rod-like member 5a having a male screw part 10 formed on one end side. It has been done. In addition, this hook part 4 is formed in the recessed part shape which can be fitted inside the base part B of the rail R like the fitting part 2 of the said clamping part main body 3. As shown in FIG.
[0013]
The sandwiching section main body 3 and the movable sandwiching section 5 are configured so that the fitting section 2 of the sandwiching section main body 3 is fitted to the outside of the base portion B of the railroad rail R and moves from the inside of the railroad rail R through the lower portion of the base portion B. By inserting the male screw part 10 side of the clamping part 5 into the insertion hole 9 and the washer 16, and hooking the hook part 4 on the inner side of the base part B, and tightening and tightening the fastening screw 14 to the male screw part 10, The base part B of the rail R is fixed to the rail R so as to be sandwiched from the outside and the inside. Further, since the tightening screw 14 is a screw that can be tightened by hand, the sandwiching portion main body 3 and the movable sandwiching portion 5 can be easily installed.
[0014]
Since the clamping part main body 3 and the movable clamping part 5 are connected and fixed in a detachable manner by the fastening screw 14, the clamping part main body 3 and the movable clamping part 5 can be fixed to various railway rails R having different widths of the base part B. The means for fixing the sandwiching section main body 3 and the movable sandwiching section 5 to the railway rail R is not limited to the fastening screw 14, and the sandwiching section main body 3 and the movable sandwiching section 5 can be easily attached to the base B of the railway rail R and Other things may be used as long as they can be fixed stably.
[0015]
As shown in FIGS. 1 and 3, the life rod 8 is composed of a hollow steel tube 11 that can be inserted into and extracted from the support rod 6 from above, and a lifeline 17 connected to an operator is hooked to the outside of the hollow steel tube 11. The lifeline attaching part 7 for connecting by is provided. Moreover, the fall distance when the worker M who fixed the lifeline 17 on the waist falls is shorter when the other end of the lifeline 17 is attached at a position higher than the waist, compared with the case where it is attached at a position lower than the waist. The load applied to the lifeline 17 is also reduced. Therefore, the lifeline attachment part 7 is installed on the life stick 8 when the life stick attachment part 7 provided on the outside of the life stick 8 is inserted into the waist of the worker M when the life stick 8 is inserted into the support stick 6. It is set to be a position higher than the height of.
[0016]
The outer surface of the hollow steel pipe 11 is made of an insulating material member 12 such as a vinyl pipe so that the rails R and R are not short-circuited when the hollow steel pipe 11 falls and the corrosion of the hollow steel pipe 11 is prevented. It is covered. In addition, a plurality of fluorescent materials 13 are affixed to the outer surface of the insulating material member 12 at predetermined intervals in order to improve visibility during night work.
[0017]
Hereinafter, the installation of the lifeline fitting 1 on the rail R and the change of the fixing place of the lifeline 17 fixed by the lifeline fitting 1 will be described with reference to FIG. First, a plurality of sets are installed at predetermined intervals on the base B so that the clamping unit main body 3 and the movable clamping unit 5 are located outside the rail R in the work section. The worker M attaches the safety belt 19 to the waist, connects the lifeline 17 to the safety belt 19, and fixes the lifeline 17 to the lifeline attaching portion 7 of the life stick 8 by the hook 18. Thereby, the worker M is connected to the life stick 8 via the lifeline 17. And the lifeline 17 is fixed to the base part B of the rail R by inserting the lifestick 8 from above into the support bar 6 provided in the upper surface 3a of the clamping part main body 3 previously installed.
[0018]
Therefore, the lifeline 17 is fixed at a position closest to the construction site, and the workability is improved as compared with the conventional case where the lifeline 17 is fixed to the guardrail or the bridge sidewalk. Work such as sleeper replacement and inspection can be performed within a range substantially equal to the length.
[0019]
Further, when the work is performed in a place beyond the length of the lifeline 17 from the life stick 8, it is necessary to change the place where the lifeline 17 is fixed. At this time, the worker M pulls out the life stick 8 from the support stick 6 into which the life stick 8 is inserted, and there is another support stick 6 which is installed in advance in a predetermined place with the life stick 8. The life stick 8 is inserted and fixed to the support stick 6. Thus, when changing the fixing place of the lifeline 17, the fixing place of the lifeline 17 can be easily changed without performing a detailed operation such as removing the hook 18 etc. that has fixed the lifeline 17 to the lifeline attaching part 7. Thus, the worker M can efficiently perform the entire work.
[0020]
As described above, the holding part main body 3 and the moving holding part 5 can be easily fixed to the base part B of the railway rail R by the fastening screws 14, so that the support bar 6 for fixing the lifeline 17 can be shortened. Easy to install in time. Further, the sandwiching section main body 3 and the movable sandwiching section 5 installed on the railroad rail R do not hinder the traveling of the train in a state where the life stick 8 is not inserted into the support rod 6 of the sandwiching section main body 3. The preparatory work for installing the sandwiching section main body 3 and the movable sandwiching section 5 can be performed in anticipation of a time zone during which the train does not pass even within the train operation time. Can start.
[0021]
Further, the fixing place of the lifeline 17 can be easily changed by pulling out the life stick 8 from a certain support stick 6 and inserting it into another support stick 6, so that it does not take time and effort to remove the hook 18 as in the prior art.
[0022]
【The invention's effect】
Since the lifeline fitting according to claim 1 is detachably fixed by a screw that can be tightened by hand near the construction site called the base part of the railroad rail, the lifeline connected to the worker is different in base width. It can be easily installed on various railway rails, and the workability is improved as compared with the case where the work is performed with the lifeline fixed at a location away from the railway rails. Moreover, since the life stick to which the lifeline is attached is fixed to the support stick so that it can be pulled out and pulled out, the operator can easily fix the lifeline and can easily change the fixing location. In addition, the lifeline fitting will not interfere with train travel if the lifestick is pulled out, so it can be installed in anticipation of the time when the train does not pass even within the train operation time. Is possible.
[0023]
According to the lifeline fitting according to claim 2, since the outside of the life rod is covered with the insulating material member, when the life rod is accidentally fallen, the rails are short-circuited or the life rod is corroded. Can be prevented.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a lifeline fitting and a railroad rail according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a sandwiching section main body and a movable sandwiching section.
FIG. 3 is a plan view of a life stick.
FIG. 4 is a perspective view showing an example of using a lifeline fitting in a railroad rail laid on a bridge.
FIG. 5 is a schematic view showing a conventional railroad rail work safety device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lifeline attachment 2 Fitting part 3 Clamping part main body 4 Hook part 5 Moving clamping part 6 Support stick 7 Lifeline attachment part 8 Life stick 11 Hollow steel pipe 12 Insulation material member 17 Lifeline B Base part R Rail rail W Sleeper

Claims (2)

In lifeline fittings installed on railroad rails laid in high places,
Wherein a clamping body having a fitting portion in a direction perpendicular to the longitudinal direction of the railway rail is fitted to the outside of the base portion of the railway rail is separated close freely connected and fixed to該挟lifting body, a male thread at one end A movable holding part having a hook part hooked on the other end side of the rod-shaped member formed with the hook and passing under the base part of the railroad rail, and projecting upward to the holding part main body. A life rod made of a hollow steel pipe that can be inserted into and withdrawn from above the support rod and has a lifeline mounting portion on the outside ,
The support rod when the clamping part main body and the movable clamping part are fixed to the railway rail by tightening and screwing a clamping screw to the male screw part, and the clamping part main body is fixed to the railway rail. A lifeline fitting, wherein an upper end of the rail is lower than a head portion of the rail .   2. The lifeline fitting according to claim 1, wherein an outer side of the life rod is covered with an insulating material member.

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