JPS6365790B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention provides a safe way to catch objects or people that accidentally fall between the pipe frame scaffolding used at building construction sites and the building frame (hereinafter simply referred to as the frame). This invention relates to a tensioning device for narrow safety nets for fastening.

The pipe frame scaffolding is placed with a certain distance from the structure for workability reasons.

Objects often fall between the pipe frame scaffolding and the structure, and sometimes people fall between them. If something falls, there is a danger of hitting people below, so to prevent harm, it is common practice to install a narrow safety net between the building frame and the pipe frame scaffolding.

Conventionally, this narrow safety net was stretched by driving appropriate anchors into the outside wall of the structure to stop the narrow safety net, and then tying the pipe frame scaffolding side with wire, etc., but this took a long time. At the same time, cleaning up the scratches left by the anchors that had been driven into the structure was difficult and time-consuming.

The present invention solves these inconveniences and provides a narrow safety net tensioning system for pipe frame scaffolding that can quickly and easily tension a narrow safety net by hooking a simple tensioning tool onto the pipe frame scaffolding. The purpose is to provide ingredients.

The following description will be made based on the attached drawings illustrating embodiments.

Weld flat copper around the outer periphery near the upper end of the pipe holding cylinder 1, extend one end and bend it to hold the vertical pipe F1 of the pipe frame scaffold F, and attach the horizontal pipe of the pipe frame scaffold to the bent part. A hooking fitting 3 with an inverted U-shaped notch 2 is provided for hanging from above F2, and a horizontal U-shaped notch is provided at the lower end of the pipe frame scaffolding at right angles to the vertical pipe F1. Weld the butt 5 with the drilled part 4 to the lower end surface so that a flange is formed around it, and position the lower end of the holding cylinder 1 with respect to the vertical pipe F1 as shown in FIG. The vertical rod 7 of the L-shaped arm 6 is attached to the pipe frame scaffold in parallel with the vertical pipe F1, and the pipe is welded in an inverted L shape. 1, a retaining rod 8 is protruded from the center of the lower end of the vertical rod 7, the retaining rod 8 is protruded through the retaining hole 9 provided in the stopper 5 at the lower end of the holding cylinder, and a retaining nut 10 is attached to the protruding end. to screw on.

The horizontal rod 11 of the L-shaped arm 6 has an opening 1 at the front end.
2, a rod-shaped telescopic rod 13 that fits into the inner diameter of the telescopic rod 13 is inserted in and out freely, and a hook 14 is provided on the outer periphery of the tip of this retractable rod 13 to attach a narrow safety net N, and an L-shaped arm is mounted opposite to this. 6 horizontal rod 1
A similar hook 15 is provided above the proximal end of 1.

In addition, several notch grooves 16 are provided on the upper end surface of the holding cylinder 1, and one place on the upper circumference of the vertical rod 7 that is in contact with this upper end surface of the L-shaped arm 6 is fitted into the notch groove 16. A positioning piece 17 is provided to protrude downward, and this positioning piece 17 lifts the L-shaped arm 6 until the locking nut 10 touches the bottom surface of the stopper 5, and rotates left and right to fit each notch. 16, the horizontal rod 11 of the L-shaped arm 6 can be positioned not only from the front but also by rotating 45 degrees or 90 degrees to the left or right as shown by the imaginary lines in FIG.

Reference numeral 18 denotes a reinforcing stay diagonally welded to the lower end of the horizontal rod 11 of the L-shaped arm, the lower end of which is attached to the outer circumference of the lower end of the holding cylinder 1, and the lower end surface of the stay is in contact with the upper surface of the collar of the stopper 5. An arcuate contact piece 19 is welded. A lock screw 20 is used to fix the telescopic rod 13 at a position where it is pulled out from the horizontal rod 11 by an appropriate amount.

The structure described above shows an example of implementation, and in order to obtain the same effect, various other structures can be manufactured without departing from the gist of the present invention.

As shown in FIG. 9, the present invention is used by hanging an appropriate number of pipe frames in a line horizontally by hooking them onto a pipe frame scaffold F placed on the outside of a frame K with an appropriate gap S between them. In addition, the telescopic rods can be easily adjusted in and out, making it possible to effectively tension narrow safety nets at full intervals, resulting in extremely high safety.Furthermore, the tensioning equipment can be simply hooked onto the pipe frame scaffolding. Since it is a simple job, the time required for tensioning is minimal, and the L-shaped arm can be easily moved from the front to the left and right, from 90 degrees to 45 degrees.
Even if the outer wall of the frame is complex, it can be stretched freely to fit the frame.

In addition, in order to remove the tensioning tool of the present invention, the holding cylinder 1
Pull the stopper 5 at the bottom end slightly toward you,
Separate the notch 4 from the vertical pipe F1 of the pipe frame scaffolding, then lift the holding cylinder 1 a little, and attach the notch 2 of the hook 3 to the horizontal pipe F2 of the pipe frame scaffolding.
It can be easily removed by removing it from the

As described above, the present invention has a very simple structure,
It is easy to use, can be freely applied to a wide range of conditions, is extremely convenient and useful, and has a great effect on improving safety at construction sites.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention; Fig. 2 is a cut-away side view of essential parts showing the state of use; Fig. 2 is a plan view; Fig. 3 is a front view; Figure 1 A-A' sectional view, Figure 5 is also Figure 1 B
-B' sectional view, FIGS. 6, 7, and 8 are perspective views of the constituent members of the tensioning tool of the present invention, and FIG. 9 is an explanatory view of the state of use. 1... Holding tube, 2... Notch, 3... Hanging metal fitting, 4... Notch, 5... Pad, 6...
L-shaped arm, 7... Vertical rod, 8... Retaining rod, 9... Retaining hole, 10... Retaining nut, 11... Horizontal rod, 12... Opening, 13... Telescopic rod, 14 ... Hanging claw, 15... Hanging claw, 16... Cut groove, 17... Positioning piece, 18... Reinforcement stay, 19... Contact piece, 20... Lock screw, N...
...Narrow safety net, F...Pipe frame scaffolding, F1...
...Vertical pipe of pipe frame scaffold, F2...Horizontal pipe of pipe frame scaffold, K...Structure, S...Spacing.

Claims (1)

[Claims] 1. Fit the vertical rod of the L-shaped arm into the cylindrical holding tube, which is hooked onto the horizontal pipe of the pipe frame scaffold and attached to the vertical pipe, so that it can rotate left and right, and place it in the appropriate position. A rod-shaped telescopic rod is inserted into the horizontal rod so that it can be inserted and removed from the front end opening, and hooks for attaching a narrow safety net are provided at the base end of the horizontal rod and the tip of the telescopic rod. Narrow width safety net tensioning equipment for pipe frame scaffolding, featuring: