JPS5828612Y2 - Fall prevention safety device - Google Patents

Description

[Detailed description of the invention] This invention is an invention for improving a safety device used to prevent workers from falling when going up and down steel towers, ladders, and other high-rise structures, or when moving sideways at such high places.

Conventionally, this type of safety device was not provided with a support member 10 to control the rotation of the lever 6, so if a worker falls during use and a high load is applied, the lever 6 Since the sliding latching portion 5 has a structure that grips both side edges of the rail R from the front and back, there is a possibility that the both side edges of the rail R may be cut off and destroyed.

This phenomenon was particularly observed when the rail R was made of aluminum alloy.

The purpose of the present invention is to eliminate and improve such defects and prevent the lever 6 from rotating more than necessary, thereby preventing damage to the rail.

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in the figure, this embodiment includes one or more rollers 1 and 2 that slide on the front and back surfaces and side edges of both side edges of the rail R, respectively.
．． 3 are arranged in the front and rear, side walls 41 are arranged on both sides facing each other and connected by shafts 42, 13, etc. to form the frame 4, and the rail R
Two lever rods 6 are disposed facing each other and have sliding hooks 5 that fit and slide on both side edges of the rail R and pry up and stop the front and back sides of the rail R when rotated during a fall. A ring body 8 which is rotatably connected to the frame 4 by a shaft 13 and which connects a rope or the like to one end of the lever rods 6, 6 is rotatably attached to the shaft 7. A spring 9 is provided which is wound around the shaft 7 so that the sliding latching parts 5, 5 of the lever rods 6, 6 are always biased in the direction to grip the rail R, and is wound around the shaft 7 so that the ring body 8 is always on the right side (Fig. 2). A spring 91 is provided to bias the contact portion 1 into a rotated state.
1 and leg portions 12.12 is placed inside each of the both side walls 41.41 of the frame 4, and the leg portions 1.
2.12 is fixedly attached by a roller shaft 14.15.

To use the present invention, one end of the rope 17 with the hook 16 attached to the ring body 8 is attached directly or via a connecting fitting 18.

Workers working at heights carry this safety device with them when they go to the site.The rail R is installed on the post or beam or both of the steel towers in advance, and the worker inserts the safety device they are carrying into the lower end of the rail R. match.

In this case, both side edges R1, R1 of the rail R are fitted between the rollers 1, 2.3 arranged on both sides and in the sliding latches 5, 5 of the lever rods 6, 6.

Then, the hook 16 attached to the rope 17 is connected to the ring of the safety belt worn by the worker, and the worker ascends and descends high-rise structures such as steel towers in this state. By lifting the lever lever 6゜6
is tilted diagonally upward against the spring 9, and the sliding latching part 5 moves as the worker ascends and descends or moves laterally, with the rail R released, and in the event that the worker loses his or her limbs in the process. If the worker slips and falls, the elasticity of the spring 9 will cause the lever 6 to
, 6 rotate directly, and the retaining claws 51, 51 of the sliding latches 5, 5 forcefully grasp the front and back sides of both side edges R1, R1 of the rail R1 to stop the rail R1, thereby preventing the worker from falling. Due to this impact load during fall prevention, the retaining claws 51, 51 of the sliding latching portions 5.5 of the lever levers 6, 6 are pressed against both side edges R of the rail R.
1.R1 may be eaten up, and this tendency is particularly strong when rail R is made of aluminum alloy and a high impact load is applied, but in this case, the lever 6. In order to stop the rotation of the levers 6, a stopper member 10 is provided to control the rotation of the levers 6, 6.

That is, the stopper members 10 are fixed to the inner sides of both side walls 41, 41 of the frame body 4, and the lever rods 6, 6 are rotated in the rail fastening direction, and the retaining claws 51, 51 are locked against the rail R due to a high impact load. The end portions of the levers 6, 6 abut against the abutting member 10 when the levers 6, 6 are bitten into the thickness of 1 to 1, so that they do not rotate any further.

Therefore, even if an aluminum alloy rail R is used, the rail will not be cut off even under an unexpectedly high load, and the rail can be protected and can withstand high loads, increasing its strength.

Furthermore, the locking claws 51 of the sliding latching portions 5, 5 of the lever rods 6, 6,
Since the rails 51 grip the front and back sides of both side edges of the rail R, there is no slippage, and there are remarkable effects such as the worker being able to stop on the spot as soon as he falls, thereby protecting his safety.

In the embodiment of the present invention, the support member 10 is pivotally fixed to the rollers 14, 15 inside the side walls 41, 41 of the frame body 4, but this is fixed to the side walls 4 with another rivet or the like.
1.41 or alternatively the side wall 41.4
It is possible to use it as a stopper member by bending a part of 1 or by protruding a rivet or other object.

Further, although the frame body 4 has both side walls 41 and 41 connected by shafts 42 and 13, it is also possible to form them integrally by pressing so as to cover the mounting side of the ring body 8.

[Brief explanation of the drawing]

The attached drawing shows the fall prevention safety device of this proposal, and is
2 is a front sectional view, FIG. 3 is a side view, FIG. 4 is a front view of the abutment member, and FIG. 5 is an explanatory view showing the state of use. Codes in the figure: 1, 2.3 are rollers, 4 is a frame, 41 is a side wall, 5 is a sliding latch, 51 is a pawl, 6 is a lever, 7°13.42 is a shaft, 8 is a ring Body, 9 and 91 are springs, 10 is a support member, 11 is a contact part, 12 is a leg part, 14.15 is a roller shaft, 16 is a hook, 17 is a rope, 18 is a connecting metal fitting, R1 is an edge, R is It's a rail.

Claims (5)

[Scope of utility model registration request] (1) A frame body 4 provided on both sides with one or more rollers 1, 2.3 that slide on the front, back, and side edges of both side edges of the rail R, respectively. Two lever rods 6, 6 provided with sliding latches 5 that rotate and stop by prying the front and back sides of both side edges of the rail R in the event of a fall are opposed and pivotally mounted. A ring body 8 is attached to one end of the lever rods 6, 6 by a shaft 7, and a spring 9 is provided for urging the lever rod 6 to constantly slide on the rail.
．． 41, a support member 1 for controlling the rotation of the lever rods 6, 6, respectively;
A fall prevention safety device featuring a structure with a 0 mark and an open hole. (2) The abutting member 10 includes the abutting part 11 and the leg part 12 of the lever 6.
The fall prevention safety device according to claim (1) of claim 1, which is characterized in that the leg portion 12 is pivotally connected to the mounting shaft of the rollers 1, 2.3. (3) The abutting member 10 includes the abutting part 11 and the leg part 12 of the lever 6.
A fall prevention safety device according to claim (1) of the utility model registration, characterized in that the leg portion 12 is fixed to the side wall 41 with a rivet. (4) The crash according to claim (1) of the utility model registration, characterized in that the abutting member 10 is made by bending a part of both side walls 41, 41 of the frame body 4 inwardly so as to protrude. Safety device for prevention. (5) The fall prevention safety device according to claim (1) of the utility model registration claim, wherein the abutment member 10 is provided with objects protruding inwardly on both side walls 41 and 41 of the frame body 4, respectively. .