Main rope support and installation method thereof

Abstract

To provide a stanchion with strength as a main rope support.SOLUTION: A master rope support 2 is provided with a hollow cylindrical outer cylinder member 3, a long jack base 10 fitted into the outer cylinder member 3 from below, and a fastening handle 20 formed on the upper part of the jack base 10 and detachably screwed to a threaded part 11 exposed upward from the outer cylinder member 3. A seat plate part 4 is provided at a lower end opening part of the outer cylinder member 3. The jack base 10 is provided with a locking part 12 of an L-shaped plate body at a lower-end, and is exposed from a lower-end opening of the outer cylinder member 3. When the main rope support 2 is installed in the grating G, the claw part 12A of the locking portion 12 is inserted downward from the gap S of the grating G, the locking part 12 is disposed at a right angle to the twist bar TB of the grating G, and the fastening handle 20 is rotated to bring the grating G and the twist bar TB into pressure contact with each other by the seat plate part 4 and the locking part 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a stanchion for installation on a grating (metal grid) used in a work area, and a method for installing the same. [Background technology]

[0002] Conventionally, gratings installed as walkways at factories and railway construction sites have been known to have stanchions and safety ropes attached to hooks on the stanchions to block access or to mark off areas (see, for example, Patent Document 1). In the conventional stanchion described in Patent Document 1 above, the locking piece at the lower end of a rod inserted into the stanchion body is passed through a hole in the grating and rotated half a turn along the underside of the grating, and the handle that screws into the upper end of the rod is rotated to tighten and lock the locking piece against the underside of the grating.

[0003] Furthermore, in order to install stanchions simply and easily, a stanchion is known which comprises a fixed base that can be fitted into the groove of the grating, a columnar body erected on this fixed base, a locking piece that protrudes from the lower end of the columnar body and is exposed on the underside of the grating, a fixed base that is attached to the columnar body above the locking piece, and a length adjustment means that can adjust the height of the columnar body (see, for example, Patent Document 2).

[0004] Incidentally, in the conventional stanchions described in the above Patent Documents 1 and 2, the locking pieces are locked to the bearing bar (main material) of the grating, and the seat plate or fixed base and the locking pieces are sandwiched between the bearing bar. Therefore, there was a problem that the strength performance could not be exhibited unless the grating bearing bar had a certain height and a certain thickness or more. Therefore, there was a problem that it was difficult to give the stanchion (handrail support) the strength performance required for a life rope support. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Utility Model Application Publication No. 2-148018 [Patent Document 2] Japanese Utility Model Application Publication No. 3-71065 Summary of the Invention [Problem to be solved by the invention]

[0006] In the conventional stanchions described in Patent Documents 1 and 2, the locking pieces are locked to the bearing bar (main material) of the grating, and the seat plate or fixed base and the locking pieces are sandwiched between the bearing bar. This caused a problem that the strength performance could not be exhibited unless the grating bearing bar had a certain height and a certain thickness or more. This caused a problem that it was difficult to give the stanchion (handrail support) the strength performance required for a life rope support.

[0007] The present invention has been made to solve the above-mentioned problems, and aims to provide a life rope post that can ensure its strength as a life rope post with a simple configuration, and a method for installing the same. [Means for solving the problem]

[0008] The life rope support of claim 1 of the present invention is configured to include an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, and having a hollow interior, a jack base formed to be longer than the outer tube member and inserted into the outer tube member, and having a threaded portion formed on the upper portion exposed from the upper end opening of the outer tube member, and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle that is detachably screwed onto the threaded portion, and the locking portion is configured so as to be able to pass through a gap in the grating, and this locking portion is inserted downward through the gap in the grating and positioned perpendicular to the twist bar of the grating, and the tightening handle is rotated to press the grating with the seat plate portion and the locking portion.

[0009] In the life rope support according to claim 1 of the present invention, the life rope support is configured to include an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, the inside of which is formed hollow, a jack base formed longer than the outer tube member and fitted through the outer tube member, the jack base having a threaded portion formed on the upper portion exposed from the upper end opening of the outer tube member and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle detachably screwed into the threaded portion, and the locking portion is adapted to pass through a gap in a grating. By inserting the locking part downward through the gap in the grating, positioning the locking part perpendicular to the twist bar of the grating, and rotating the tightening handle to press the grating with the seat plate part and the locking part, the locking part is positioned perpendicular to the twist bar of the grating, and the tightening handle is rotated to press the grating with the seat plate part and the locking part, so that external forces can be borne by the multiple bearing bars via the twist bar. This not only ensures that the strength performance of the life rope support can be achieved, but also makes it possible to accommodate a variety of gratings.

[0010] The life rope post according to the present invention is preferably provided with an indicator on the upper end surface of the jack base, which indicates a direction that matches the extension direction of the locking part. With this configuration, the extension direction of the locking part can be confirmed from above during installation, improving workability. Furthermore, the life rope post according to the present invention is preferably provided with an L-shaped plate as the locking part. With this configuration, even if the gap in the grating is narrow or the interval between the twist bars is narrow, the locking part can be reliably inserted downward through the gap in the grating. Furthermore, the life rope post according to the present invention is preferably provided with a flange part formed at the upper end opening of the outer tubular member against which the lower end surface of the tightening handle can abut. With this configuration, the screw-turning pressure can be reliably transmitted to the seat plate part of the outer tubular member and the locking part of the jack base when the tightening handle is operated. In addition, it is preferable that the life rope support of the present invention has a seat plate portion formed in a rectangular shape and a reinforcing portion that connects the seat plate portion and the lower part of the outer tubular member, and the master ring is provided on the upper part of the outer tubular member. With such a configuration, the seat plate portion can bear strong pressure, improving strength performance, and since the master ring is disposed above the outer tubular member, workability is improved.

[0011] The method for installing a life rope post according to claim 6 of the present invention comprises an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, the interior of which is formed hollow, a jack base formed longer than the outer tube member and fitted through the outer tube member, the jack base having a threaded portion formed on the upper portion exposed from the upper end opening of the outer tube member and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle that is detachably screwed onto the threaded portion, the locking portion being configured so as to be able to pass through a gap in a grating, the method comprising the steps of: a first step of inserting the locking portion downward through the gap in the grating; a second step of positioning the locking portion perpendicular to the twist bar of the grating; and a third step of rotating the tightening handle to press the grating against the seat plate portion and the locking portion, thereby installing the life rope post on the grating. This is what was done.

[0012] In the method for installing a life rope post according to claim 6 of the present invention, the life rope post is configured with an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, and formed with a hollow interior, a jack base formed longer than the outer tube member and fitted through the outer tube member, and having a threaded portion formed on the upper portion exposed from the upper end opening of the outer tube member and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle that is detachably screwed onto the threaded portion, and the locking portion is configured to be able to pass through a gap in a grating, and the locking portion is inserted downward through the gap in the grating. By having a first step of inserting the locking part perpendicular to the twist bar of the grating, a second step of placing the locking part perpendicular to the twist bar of the grating, and a third step of rotating the tightening handle to press the grating with the seat plate part and the locking part and install the life rope post on the grating, in the first step the locking part is inserted downward from the gap in the grating, in the second step the locking part is placed perpendicular to the twist bar of the grating, and in the third step the tightening handle is rotated to press the grating with the seat plate part and the locking part and install the life rope post on the grating. Therefore, with a simple operation, an external force can be applied to multiple bearing bars via the twist bar, and not only can the strength performance of the life rope post be reliably exhibited, but also it can be adapted to a variety of gratings. Effect of the Invention

[0013] In the life rope support of the present invention, the life rope support is configured to include an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, and having a hollow interior, a jack base formed to be longer than the outer tube member and fitted through the outer tube member, and having a threaded portion formed on the upper part exposed from the upper end opening of the outer tube member, and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle that is detachably screwed onto the threaded portion, and the locking portion is configured so as to be able to pass through the gap in the grating, and this locking portion is inserted downward through the gap in the grating and positioned perpendicular to the twist bar of the grating, and the tightening handle is rotated to press the grating with the seat plate portion and the locking portion, thereby not only reliably demonstrating its strength performance as a life rope support, but also being able to accommodate a variety of gratings.

[0014] In addition, in the method for constructing a life rope post according to the present invention, the life rope post is configured to include an outer tube member having a seat plate portion at the lower end opening and a master ring on the outer periphery, and formed with a hollow interior, a jack base formed to be longer than the outer tube member and fitted through the outer tube member, and having a threaded portion formed on an upper portion exposed from the upper end opening of the outer tube member and a locking portion protruding from the lower end opening of the outer tube member, and a tightening handle detachably screwed into the threaded portion, and the locking portion is configured to be able to pass through gaps in a grating, and this locking portion By having a first step of inserting the twist bar downward through the gap in the grating, a second step of positioning the locking part perpendicular to the twist bar of the grating, and a third step of rotating the tightening handle to press the grating with the seat plate part and the locking part, and installing the life rope post on the grating, with simple operation, external forces can be applied to multiple bearing bars via the twist bar, not only ensuring the strength performance of the life rope post, but also making it possible to accommodate a variety of gratings. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is an exploded perspective view showing a life rope post according to one embodiment of the present invention. [Diagram 2] Figures 2 (A) to (C) are respectively a side view showing the outer tube member of the life rope support of Figure 1, a side view showing the jack base of the life rope support of Figure 1, and a side view showing the jack base assembled to these outer tube members. [Diagram 3] 3A and 3B are a plan view and a back view, respectively, of the outer cylinder member. [Figure 4] 4A and 4B are explanatory diagrams showing a state in which the tightening handle is tightened to tighten the jack, and a state in which the tightening handle is loosened to remove the tightening handle from the threaded portion, respectively. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] The present invention will be described below with reference to an embodiment shown in the drawings. As shown in Figures 1 and 2, a life rope post 2 according to one embodiment of the present invention is configured with a cylindrical outer tube member 3 having a seat plate portion 4 at the lower end opening and a master ring 5 on the outer periphery, a round bar-shaped jack base 10 formed longer than the outer tube member 3 and inserted into the outer tube member 3 from below, and a tightening handle 20 formed on the top of the jack base 10 and detachably screwed into a threaded portion 11 exposed from the upper end opening 6 of the outer tube member 3. The outer tube member 3, jack base 10, and tightening handle 20 are configured of steel (metal).

[0017] The lower end of the jack base 10 is provided with a locking portion 12 made of an L-shaped plate, and the thickness of the locking portion 12 is dimensioned to pass through the gap S of the grating G (see Fig. 4 (A) and (B)). The claw portion 12A of the locking portion 12 extends horizontally, and the vertical dimension (height) 12H of the claw portion 12A is determined according to the interval between the twist bars TB. In addition, the upper end surface of the jack base 10 is provided with an indication portion 13 that indicates the direction that matches the extension direction of the locking portion 12 and the extension direction end with an arrow mark, so that when the locking portion 12 is inserted into the gap S of the grating G and placed downward, the orientation of the locking portion 12 can be seen from above. The upper end opening of the outer tubular member 3 is formed with a flange portion 7 against which the lower end surface of the tightening handle 20 can abut. This flange portion 7 is designed to reliably transmit the screw-turning pressure to the lower side of the outer tubular member 3 when the tightening handle 20 is operated in the tightening direction. The seat plate 4 is formed in a substantially square rectangular shape, and a triangular reinforcing portion 8 is provided between the seat plate 4 and the lower portion of the outer tube member 3 to connect them. The master ring 5 is provided on the upper portion of the outer tube member 3. In this embodiment, the vertical dimension 12H of the claw portion 12A is set to 50 mm, the height dimension of the locking portion 12 is set to 92 mm, the dimension of the bottom of the locking portion 12 is set to 87 mm, and the plate thickness of the locking portion 12 is set to 3.2 mm. Furthermore, the height dimension of the outer tube member 3 is set to 950 mm, the height dimension of the jack base 10 is set to 1050 mm from the connection portion with the locking portion 12 to the upper end surface, and the vertical dimension of the threaded portion 11 is set to 150 mm. However, it goes without saying that the dimensions may be appropriately changed depending on the aspect of the grating G.

[0018] Next, the life rope post 2 according to one embodiment of the present invention and its installation method will be described based on the operation of the life rope post 2 according to the above embodiment. Since the life rope post 2 according to the above embodiment is configured as described above, when installing it on the grating G, first prepare the separate outer tube member 3, the jack base 10, and the tightening handle 20, insert the upper threaded portion 11 of the jack base 10 from the lower end opening of the outer tube member 3 to expose it from the upper end opening of the outer tube member 3, and expose the locking portion 12 of the jack base 10 from the lower end opening of the outer tube member 3, and insert the locking portion 12 of the jack base 10 integrated with the outer tube member 3 downward through the gap S of the grating G (first step S1, see (B) of FIG. 4). Next, screw the tightening handle 20 into the threaded portion 11 exposed from the upper end opening of the outer tube member 3 to prevent the jack base 10 from falling off the outer tube member 3 (see (A) of FIG. 4). At this time, the tightening handle 20 may be screwed into the threaded portion 11 before the engaging portion 12 is inserted into the gap S of the grating G.

[0019] Next, this locking portion 12 is disposed perpendicular to the twist bar TB of the grating G (second step S2). At this time, since a display unit 13 is provided, it can be confirmed that the locking portion 12 is positioned perpendicular to the twist bar TB of the grating G. Next, the tightening handle 20 is rotated in the screwing direction to displace the relative positions of the outer tube member 3 and the jack base 10 in the vertical direction, and the jack base 10 is displaced upward relative to the outer tube member 3 to bring the locking portion 12 closer to the seat plate portion 4. Furthermore, when the tightening handle 20 is rotated to press it against the flange portion 7, the underside of the seat plate portion 4 is pressed against the upper surface of the grating G and the claw portion of the locking portion 12 is pressed against the twist bar TB of the grating G. The grating G and twist bar TB are clamped between the seat plate portion 4 and the locking portion 12, and the main rope support 2 is installed on the grating G (third step S3, see (A) of Figure 4). In this way, when a load is applied, the seat plate portion 4 and the locking portion 12 can distribute stress through the twist bars TB to the multiple bearing bars (main materials) BB to which the twist bars TB are connected. Therefore, even if the grating has a relatively small thickness and size, it can obtain high strength performance. In the first step S1, the locking portion 12 of the jack base 10 is inserted vertically downward from the gap S of the grating G. This is the case when the distance between the twist bars TB is 87 mm or more. When the distance between the twist bars TB is 87 mm or less, the outer tube member 3 may be tilted to insert the locking portion 12 downward from the gap S of the grating G, and then the outer tube member 3 may be returned to a vertical position. [Explanation of symbols]

[0020] 2 Main rope support 3 External cylinder member 4 Seat plate part 5 Mastering 10 Jack Base 11 Threaded part 12 Locking part 20 Clamping handle G Grating S Grating gap TB Twist Bar

Claims

1. an outer tubular member having a life rope support, a seat plate at a lower end opening, and a master ring on an outer periphery, the inner part of which is formed hollow; a jack base formed to be longer than the outer tubular member, fitted through the outer tubular member, and having a threaded portion formed on an upper portion exposed from an upper end opening of the outer tubular member, and a locking portion protruding from a lower end opening of the outer tubular member; The fastening handle is detachably screwed to the threaded portion, and the engaging portion is formed so as to be able to pass through the gap in the grating. This life rope support is characterized in that the locking portion is inserted downward through the gap in the grating, the locking portion is positioned perpendicular to the twist bar of the grating, and the tightening handle is rotated to press the grating against the seat plate portion and the locking portion.

2. 2. A life rope support as claimed in claim 1, characterized in that the upper end surface of the jack base has an indication portion indicating a direction that coincides with the extension direction of the engagement portion.

3. A life rope support as claimed in claim 1 or 2, characterized in that the locking portion is composed of an L-shaped plate.

4. 2. A life rope post as claimed in claim 1, characterized in that a flange portion is formed at the upper end opening of the outer tubular member, against which the lower end surface of the tightening handle can abut.

5. A life rope support as described in claim 1, characterized in that the seat plate portion is formed in a rectangular shape and is provided with a reinforcing portion connecting the seat plate portion to the lower part of the outer tube member, and the master ring is provided on the upper part of the outer tube member.

6. an outer tubular member having a life rope support, a seat plate at a lower end opening, and a master ring on an outer periphery, the inner part of which is formed hollow; a jack base formed to be longer than the outer tubular member, fitted through the outer tubular member, and having a threaded portion formed on an upper portion exposed from an upper end opening of the outer tubular member, and a locking portion protruding from a lower end opening of the outer tubular member; The fastening handle is detachably screwed to the threaded portion, and the engaging portion is formed so as to be able to pass through the gap in the grating. A method for installing a life rope post, comprising: a first step of inserting the locking portion downward through a gap in the grating; a second step of positioning the locking portion perpendicular to the twist bar of the grating; and a third step of rotating the tightening handle to press the grating with the seat plate portion and the locking portion, thereby installing the life rope post on the grating.

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