JPH067137Y2 - Metal fittings for tensioning the main rope on the roof - Google Patents

Description

[Detailed Description of the Invention] Field of Industrial Application This invention is intended for the safety work of workers when waterproofing or repairing roofs without parapets or roofs with parapets that are low in quality. The present invention relates to a parent rope tensioning metal fitting for tensioning a parent rope that can use a lifeline to be secured.

Conventional technology As a means to ensure the safety of workers when waterproofing or repairing roofs without parapets or roofs that have parapets that are low in the past, crashes due to assembly scaffolds around roofs have hitherto been used. Work is done either with the prevention or with other fall prevention facilities.

Problems to be solved by the present invention When a fall prevention is performed by an assembly scaffold, a lot of man-hours, a construction period, and a temporary construction cost are required for the assembly work. Moreover, even when a fall prevention facility is prepared, the temporary construction cost is high as in the case of the assembly scaffold, and the burden on the owner is large.

On the other hand, when it is a low-rise building of about 2 to 3 floors, there are cases where the owner refuses the temporary construction fee, and in such a case it is easy to ensure the safety of work,
So to speak, there is a problem that it is easy to perform dangerous work at height in an unprotected state.

Therefore, the object of the present invention is to install a parent rope, which requires little temporary costs, can easily and reliably install the parent rope, and can perform safety work by using a life rope for waterproofing the roof surface. Is to provide.

Means for Solving the Problems As a means for solving the problems of the above-mentioned prior art, a main rope tensioning metal fitting on a roof according to the present invention is a preferred embodiment shown in FIGS. 1 to 8 of the drawings. As shown in the figure, the column base arm part 3 for sandwiching the overhanging part 2 of the roof 1 or the parapet 2 '
And a movable arm portion 4, and a pillar 5 is fixed to the pillar leg arm portion 3 at a substantially right angle, and the movable arm portion 4 is mounted on the pillar pillar 5 in the same direction as the pillar leg arm member 3. With a substantially right angle arrangement,
Moreover, the ground plate 7 is provided so as to be slidable along the column 5 and fixable to a desired position of the column 5, and a fall prevention ground plate 7 is attached to the sandwiching surface side of the movable arm 4 or the column base arm 3. Has been done. One end of a wire 16 is fixed to the lower end of the column 5, and the wire 16 is moved between a wire holding plate 17 and a wire detachment prevention bolt 21 provided at the base end of the movable arm 4. It is arranged in the same direction as the arm portion 4, and one end of the master rope 8 is connected to the other end side of the wire 16.

Action The projecting part 2 of the roof 1 (Fig. 2) or the parapet 2 '(Fig. 8) is tightly sandwiched between the column base arm part 3 and the movable arm part 4, and the movable arm part 4 is kept as it is. When the position is fixed to the pillar 5 with the bolt 14, the parent rope tensioning metal fitting 10 can be assembled to the outer peripheral edge portion of the roof 1.

Thus, when the parent rope 8 is stretched between the parent rope tensioning fittings 10 and 10 installed on the overhanging portions 2 on the opposite sides of the roof 1, the life rope 9 of each worker on the roof is connected to the parent rope 8. The work safety can be improved (Fig. 6).

The used parent rope tensioning metal fitting 10 can be removed from the overhanging portion 2 by loosening the parent rope 8 and freeing the position of the movable arm portion 4, and can be diverted to another.

Since the support column 5, the column base arm portion 3 and the movable arm portion 4 are each formed of a square steel tube, mutual detents are unnecessary. Further, since the movable arm portion 4 is provided with the ground plate 7, it is prevented from falling and the stability in the state of being attached to the overhang portion 2 is high.

It is assumed that the main rope 8 is stretched through a wire 16, and the wire 16 has one end fixed to the lower end of the support column 5 and a wire holding plate 17 provided at the base end of the movable arm 4 and a wire disengagement prevention. Since the master rope 8 is connected and stretched to the other end passed through between the bolts 21, the movable arm portion 4 is pressed by the tension of the master rope 8, and the movable arm portion 4 and the pedestal arm portion 3 The effect of sandwiching the overhanging portion 2 more reliably is achieved.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

First, FIG. 1 shows a first embodiment of the present invention, and FIGS. 2 to 4 show the usage state thereof.

The parent rope tensioning metal fitting 10 includes a column base arm portion 3 and a pillar 5 made of a square steel pipe of about 50 × 50 × 3 mm and a reinforcing plate 1.
1 is attached and welded to a substantially right-angled L-shape, and a movable arm portion 4 made of a square steel pipe is also provided on the same column 5 in the same direction as that of the column base arm portion 3 in an arrangement substantially orthogonal to the column 5. . Movable arm 4
Has a rectangular tube-shaped slider portion 12 at its base end, and is attached by slidably fitting the slider portion 12 to the support column 5. The roof 1 is composed of the column base arm part 3 and the movable arm part 4.
The overhanging portion 2 is sandwiched as shown in FIG. 2, and the column 5 is used in a state of standing vertically upward. The position of the movable arm portion 4 in which the projecting portion 2 is tightly clamped is fixed by passing the bolts 14 through the bolt holes 13 ... Preliminarily provided on the support column 5 at a constant pitch in a zigzag shape. The position where the bolt 14 is inserted can be changed according to the thickness and shape of the overhanging portion 2. The bolt hole 13 is formed by welding a small-diameter pipe to a predetermined position of the pillar 5 made of a square steel pipe, and thus the reinforcing effect of the pillar 5 by the pipe is also intended. In this way, by fixing the position of the movable arm portion 4 with the bolt 14, the parent rope tensioning metal fitting 10 is installed on the overhanging portion 2 of the roof.

A wide ground plate 7 is attached to the movable arm portion 4 substantially in parallel with the roof surface, and the ground plate 7 prevents inconvenience of the column 5 falling down in the left-right direction in FIG. The ground plate 7 may be attached to the pedestal arm 3.

The shackle 1 is attached to the lower end of the pillar 5 for tensioning the main rope 8.
5 is attached, and a wire 16 having one end connected thereto is prepared. The wire 16 is led forward through a wire holding plate 17 attached to both side surfaces of the slider 12 of the movable arm 4 and a detachment preventing bolt 21, and is connected to a shackle 18 provided at the other end of the wire 16 to a master rope. One end of 8 is connected. The master rope 8 is tensioned by a manual tightening machine 19 so as to be stretched.

The wire holding plate 17 and the wire detachment prevention bolt 21 are slightly thicker than the wire diameter on both side surfaces of the slider portion 12 of the movable arm portion 4, as shown in the structural details of FIGS. 4 and 5. First, a spacer 17 'formed by forming an R-shaped portion that bends the wire 16 with a roundness is welded,
Further, the wire holding plate 17 is welded to the outside thereof. Therefore, the wire 16 can be easily passed through the gap between the wire holding plate 17 and the column 5.

Further, since the wire detachment prevention bolts 21 are installed on the front portions of the wire holding plates 17 and 17, when the tension of the main rope 8 is released, the wire 16 restores to the straight state by its elasticity. It is prevented from coming off immediately.

On the other hand, when the master rope 8 is stretched through the wire 16 as shown in FIG. 2, since the wire 16 is bent at the position of the spacer 17 ′, the tension of the master rope 8 is passed through the spacer 17 ′. Function as a force to hold down the movable arm portion 4, and thus the movable arm portion 4 and the pedestal arm portion 3 pinch the overhanging portion 2 of the roof 1 more deeply and reliably, and the mounting state is stabilized. The number of wires 16 is one, but there are two types of cases where this is used as a single wire and when it is used as a double wire.

As shown in FIG. 6, the parent rope tensioning metal fittings 10 are installed one by one at the center positions of the two short sides facing each other in the left-right parallel direction on the roof 1 having a rectangular plane, and connect the both. In addition to the usage mode in which one parent rope 8 is stretched in the center of the roof in the arrangement, one parent rope 8 is provided at each of the two long sides vertically parallel to each other, especially near the short sides. The ropes are used one by one, and the lifeline 9 of the worker on the roof 1 is connected to each parent line 8 to ensure the safety of all work.

Other Embodiments (No. 1) FIG. 7 shows that the shackle 18 of the wire 16 is fixed to the upper end of the support column 5 by a pin 20, and the end of the master rope 8 is connected to an intermediate position of the wire 16. Parent rope 8
Shows an example of use stretched at a position higher than in the case of FIG.

(Part 2) FIG. 8 shows that when the lower parapet 2'is provided as an overhanging portion on the outer peripheral edge of the roof 1, the parent rope tensioning metal fitting 10 is installed on the upper end of the parapet 2 '. Shows the usage status.

In this case, the pedestal arm part 3 and the movable arm part 4 form the parapet 2 '.
Since the upper end of the column is sandwiched, the column 5 is installed in a horizontally outward manner. The master rope 8 is stretched by connecting with the wire 16 folded at the position of the spacer 17 '.

(Part 3) The parent rope 8 can be stretched by directly connecting the end portion thereof to the support column 5 or the arm portions 3 and 4 without using the wire 16.

Advantageous Effects of the Present Invention 10
Can be easily and surely attached to and detached from the overhanging portion 2 or the parapet 2'of the roof 1, and the master rope 8 can be easily stretched, so that the worker on the roof 1 can use the life rope 9 for work. It is possible to secure work safety. Further, since no temporary work for fall prevention is required, it is possible to achieve a reduction in temporary cost and man-hours.

[Brief description of drawings]

FIG. 1 is a perspective view of a main rope tensioning metal fitting according to the present invention, and FIG.
Figures and 3 are a front view and a right side view showing a use state of the parent rope tensioning metal fitting, and Figs. 4 and 5 are enlarged views detailing a structure of a base end portion of the movable arm. FIG. 6 is a plan view showing the arrangement of the main ropes on the roof, and FIGS. 7 and 8 are front views showing different usage states. 1 ... Roof, 2, 2 '... Overhang part 3 ... Pillar arm part, 4 ... Movable arm part, 5 ... Strut

Claims (1)

[Scope of utility model registration request] 1. A column base arm part for sandwiching a roof overhanging part or a parapet and a movable arm part, and a column is fixed to the column leg arm part at a substantially right angle, and the movable arm part is the column. The movable arm portion or the pedestal arm is arranged in the same direction as the column base arm portion, at a substantially right angle to the column, and slidable along the column and fixed to a desired position of the column. A grounding plate for tipping prevention is attached to the sandwiching surface side of the portion, one end of the wire is fixed to the lower end of the column,
The wire is arranged in the same direction as the movable arm portion by passing between a wire holding plate and a wire detachment prevention bolt provided at the proximal end portion of the movable arm portion, and one end of the master rope is provided on the other end side of the wire. Metal fittings for tensioning the main rope on the roof, characterized by being connected.