JP3182950U - Mounting jig for safety net for fall prevention - Google Patents

Abstract

The present invention provides a mounting jig that can easily move or fold a safety net for crash prevention stretched in an opening for carrying in / out equipment provided on a floor of a factory or a power plant.
A cross section having a gap for allowing a hook 100 to hang an edge rope of a safety net for crash prevention and an iron ball 111 provided at an end of the hook to slide inside and passing through a shaft portion of the hook is substantially provided. The rail 30 has an arc-shaped rail 30, a rail or handrail 60 provided around the opening, and a rail mounting bracket 81 for fixing the rail. Further, the rail mounting bracket has a leg portion 83 straddling the fence or the handrail, and has a clamp 82 for sandwiching the support of the fence or the handrail.
[Selection] Figure 2

Description

  The present invention is a safety net for preventing a fall (hereinafter simply abbreviated as a safety net) that can be attached to and removed from a fence or handrail installed around the opening for loading and unloading equipment on the floor of a factory or power plant. ).

  In some cases, floors of factories and power plants are provided with openings for carrying in and out equipment such as luggage or machine equipment to the upper and lower floors. Normally, a removable floor that closes the opening is provided, but the closing floor is removed for a certain period of time according to the above loading and unloading work, and a fence and handrail are provided around the opening, and the opening is opened. The part may be provided with a safety net for preventing falling that can be easily opened and closed.

  The safety net usually has an edge rope with high tensile strength at the peripheral edge thereof, and is stretched by tying the edge rope and a fence or handrail with a string or rope over several places. However, in this method, when there are many places to be fixed with strings and ropes, it takes time and labor, and the fixing portion may be loosened, which causes a safety problem.

  Therefore, metal fittings that provide a simpler and more reliable method for stretching a safety net have also been proposed (see, for example, Patent Document 1). However, as described above, since the opening is used for loading / unloading of luggage or mechanical equipment, it is desired that the safety net be easily moved or folded every time loading / unloading is performed.

JP-A-8-165801

  It is an object of the present invention to provide a mounting jig that can easily move or fold a safety net for preventing fall that is stretched in an opening.

  In order to solve the above-mentioned problems, the safety jig for preventing a fall safety net according to the present invention includes a hook for hanging an edge rope of the safety net for fall prevention, and an iron ball provided at an end of the hook and sliding inside. A rail having a substantially arc-shaped cross section with a gap penetrating the shaft portion of the hook, and a rail mounting bracket for fixing the rail or handrail provided around the opening to the rail are provided.

  As a result, the safety net for crash prevention can be easily fixed to the hook and the safety net for fall prevention can be easily moved or folded by moving the hook, so that the opening can be opened and closed in a short time. Is possible.

  Further, the rail mounting bracket has a leg portion straddling the fence or the handrail, and has a clamp for sandwiching the support pillar of the fence or the handrail.

  As a result, the rail mounting bracket can be easily installed and disassembled on the fence or handrail, so that the opening can be closed and opened with a removable floor in a short time.

  Furthermore, the hook has a structure in which a screw portion provided at an end portion of the shaft portion is fitted into a screw hole provided in the iron ball and joined by welding.

  Thereby, joining with a hook axial part and an iron ball becomes firm, it can prevent that a hook falls from a rail, and reliability improves.

  According to the present invention, there is an effect that the fall prevention safety net can be easily installed and dismantled in the opening, and the fall prevention safety net can be easily moved and folded.

Sectional drawing which shows the use condition of the attachment jig of the safety net for fall prevention of this invention. Sectional drawing which shows the detail of the attachment jig of the safety net for fall prevention of this invention. The front view which shows the use condition of the attachment jig of the safety net for fall prevention of this invention. The schematic diagram which shows the detail of the hook of this invention. The bird's-eye view which shows the use condition of the attachment jig of the safety net for fall prevention of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional view showing how the mounting jig 80 of the safety net 70 for crash prevention according to the present invention is used, and a removable floor (not shown) that normally closes an opening 50 provided in the floor 40. 1) is removed, and a safety net 70 for preventing a fall is installed above the opening 50. When equipment (not shown) such as a suspended load 90 or mechanical equipment is carried into and out of the second or third floor by the overhead crane 20, a safety net 70 covering the openings 50 on the second and third floors is provided on the back side of the drawing or The suspended load 90 and the wire 120 of the overhead crane 20 are passed through by moving or folding toward the front side.

  FIG. 2 is a cross-sectional view showing details of the mounting jig 80 of the safety net 70 for preventing crashing of the present invention. The hook 100 that hangs the edge rope 71 of the safety net 70 slides along the rail 30 so that the safety net 70 is moved or folded. The rail 30 accommodates an iron ball 111 provided at the end of the hook 100, and has a substantially cylindrical cross section with a gap through which a shaft portion (detailed later) of the hook 100 passes. Note that both ends of the rail 30 are closed to prevent the hook 100 from falling off the end of the rail. The rail 30 is fixed to the rail mounting bracket 81 at a plurality of locations by welding or the like, and is installed so as to straddle the rail or handrail 60 provided around the opening by the leg portion 83 of the rail mounting bracket 81. It is fixed to a post 61 of a fence or handrail 60 by a clamp 82. The clamp 82 has a shape having a convex portion having a substantially triangular cross section and a flat portion having bolt fastening holes at both ends thereof, and the diameter of the handrail support 61 can be absorbed by the bolt length.

  FIG. 3 is a front view showing a usage state of the mounting jig 80 of the safety net 70 for preventing a fall according to the present invention. The rail 30 is joined to a rail mounting bracket 81 at a plurality of locations by welding or the like. The rail mounting bracket 81 is installed so as to straddle the fence or the handrail 60 and is fixed to the handrail support 61 by a clamp 82. The rail mounting bracket 81 is provided with a long horizontal hole (not shown) for fixing the clamp 82 with a bolt, and the position of the rail mounting bracket 81 and the handrail support 61 can be adjusted.

  FIG. 4 is a schematic diagram showing details of the hook 100. There is a curved portion 115 at the tip of the hook 100, and the edge rope 71 is configured not to come off by the spring lock 113 after passing through the edge rope 71 of the safety net. A threaded portion 112 is provided at the other end of the shaft portion 114 of the hook 100, and is fitted in the threaded hole 112 of the iron ball 111 and welded at the welded portion 116. This prevents the threaded portion from being loosened and the iron ball 111 and the hook shaft 114 from being separated.

  FIG. 5 shows the safety net mounting jig 80 only on the left and right sides of the opening 50 for convenience of explanation. Has been. As described above, when the safety net 70 is moved or folded in order to carry in / out equipment such as a suspended load or mechanical equipment, for example, the edge rope 71 of the safety net 70 is removed from all the hooks 100 on the front side of the drawing. It can be performed in a short time by attaching the rope 130 to the edge rope 71 and pulling it from the opposite side (the back side of the drawing). In addition, when the loading / unloading of the suspended load or the equipment such as the machine equipment is completed and the safety net 70 is returned to the original position (closing the opening), the rope 130 is pulled from the front side of the drawing and moved (folded). This can be easily done by returning the end of the safety net 70 to the hook on the near side.

  DESCRIPTION OF SYMBOLS 10 ... Building, 20 ... Overhead crane, 30 ... Rail, 40 ... Floor, 50 ... Opening, 60 ... Handrail (or fence), 61 ... Handrail support (or fence support), 70 ... Safety net, 71 ... Edge rope, 80 ... Safety net mounting jig, 81 ... Rail mounting bracket, 82 ... Clamp, 90 ... Suspended load (or mechanical equipment), 100 ... Hook, 111 ... Hook iron ball, 112 ... Hook screw part, 113 ... Hook lock part, 114 ... hook shaft part, 115 ... hook bending part, 120 ... wire, 130 ... rope.

Claims (3)

  A safety net for fall prevention that is installed using a fence or handrail installed around the opening for carrying in / out equipment provided on the floor of a factory or power plant, the safety net for fall prevention A hook on which an edge rope is hung, a rail having a gap in which an iron ball provided at an end portion of the hook is slid inside and penetrates a shaft portion of the hook, and a rail or a handrail A safety net mounting jig for preventing a fall, comprising a rail mounting bracket for fixing the rail. The jig for preventing a safety net for fall prevention according to claim 1, wherein the rail mounting bracket has a leg portion straddling the rail or the handrail, and has a clamp for sandwiching a support post of the rail or the handrail. 3. The fall according to claim 1, wherein the hook has a structure in which a screw portion provided at an end portion of a shaft portion is fitted into a screw hole provided in the iron ball and is joined by welding. Safety net mounting jig for prevention.

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