JPS6028453Y2 - Back-fitting prevention device for fall prevention safety device - Google Patents

Description

[Detailed Description of the Invention] The present invention is an improvement to a safety device that prevents workers from falling when ascending and descending steel towers, iron bridges, utility poles, and other high-rise structures.

Conventionally, this type of fall prevention device has various types of rails 1 installed along the posts of steel towers, etc., a safety device 5 for lifting and lowering is fitted to the rail, and the safety device is attached to a safety belt worn by a worker with a rope or the like. When a worker ascends or descends a steel tower, etc., the safety device also moves up and down, and in the event of a fall by mistake, the safety device 5 immediately grabs the rail 1 and stops, allowing the worker to However, this type of safety device that has been used in the past has a directionality, and if the rail is fitted in the wrong direction, it will not stop in the event of a fall. Be especially careful when using.

It is an object of the present invention to eliminate and improve upon the drawbacks of the conventional products, and to provide a device that does not allow the safety device to be fitted to the rail unless it is oriented in the correct direction.

Aspects of the present invention will now be described in detail with reference to an embodiment illustrated in the accompanying drawings.

In this embodiment, as shown in Figs. 1 to 3, the rail 1 is attached to the steel tower by an attachment member along the main material P of the steel tower, etc., and the frame 2 is attached to the steel tower.
A safety device 5 is provided inside the rail 1, which is provided with a sliding means 3 consisting of a plurality of rollers for sliding on the rail, and a locking means 4 for grasping both edges or surfaces of the rail 1 to stop the rail 1. In a fall prevention safety device that moves up and down by fitting into the rail 1, a gripping tool 8, 8 and a bolt/nut 9 are attached to one or both ends of the rail 1, that is, the end where the safety device 5 needs to be hung on and removed from the rail 1. grip the base of the rail 1 with
It is attached to one side (the left side in Figs. 2 and 3), and with the safety device 5 facing the normal direction and fitted to the rail 1, the arm rod 6 attached to the rail 1 is attached to the opposite side (the second to (On the right in Figure 3)
It has a structure in which a support arm 7 made of a shaft rod 11 is protruded from the frame 2 of the safety device 5 located at the safety device 5 .

To use the present invention, a rope 14 or a hook is connected to the ring 13 provided on the locking means 4 of the safety device 5, and the rope 14 or the like is connected to a safety belt worn on the body of the worker.

Thereafter, as shown in Figures 1 to 3 and Figure 8, the safety device 5 is fitted onto the rail 1 from the lower end to move up and down a high-rise object such as a steel tower.
If a worker slips and falls on the way, the locking means 4 of the safety device 5 immediately grabs the rail 1 and stops, stopping the worker and protecting safety.
When fitting the safety device 5 to the rail 1, as shown in Figs. to fit.

In this case, the contact arm 7 of the safety device 5 does not contact the arm rod 6 of the rail 1, so that it can be easily fitted to the rail.

Moreover, the safety device 5 is fitted in a normal state.

On the other hand, if the safety device 5 is fitted to the rail 1 with the direction reversed, the contact arm 7 of the safety device 5 will hit the arm rod 6 of the rail 1 and will not advance any further, so the fitting direction will be changed. The operator can notice that it is incorrect and refit it in the correct direction.

As a result, the safety device 5 can always be fitted to the rail 1 in the normal direction without any misfitting, and it is possible to prevent the safety device from being fitted in the opposite direction without stopping due to the worker's carelessness, thereby ensuring safe work. It has practical effects such as being able to ensure the following.

FIG. 4 shows another embodiment in which the arm rod 6 is attached to the rail 1. On one side, a gripping tool 8 is used, and on the other hand, the arm rod 6 itself is used to grip the rail 1 with bolts and nuts 9. This embodiment differs from the first embodiment in this respect, but the other functions and effects are the same.

FIG. 5 shows yet another embodiment in which the arm rod 6 is attached to the rail 1, and is different from the first embodiment in that the arm rod 6 is directly attached to the rail 1 with screws or bolts and nuts 10. Although they are different, the other functions and effects are the same.

FIG. 6 shows another embodiment in which a stopper arm 7 is provided on the safety device 5, and a shaft 1 on which the locking means 4 is pivotally connected to the frame 2 is shown.
The second embodiment differs from the first embodiment in that the second embodiment extends to one side, but the other functions and effects are the same.

FIG. 7 shows still another embodiment in which a stopper arm 7 is provided on the safety device 5. A part of the frame body 2 is made to protrude to one side and is used as the stopper arm 7. Although different from the example, other functions and effects are the same.

[Brief explanation of the drawing]

Fig. 1 is a side view of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a plan view thereof, and Figs. 4 and 5 are plan views showing other embodiments in which the arm rod is attached to the rail. . 6 and 7 are plan views showing another embodiment in which a safety device is provided with a stopper arm, and FIG. 8 is a diagram showing a state in which it is used. Number 1 is a rail, 2 is a frame, 3 is a sliding means, 4 is a locking means, 5 is a safety device, 6 is an arm lever, 7 is a support arm, 8 is a gripping tool,
9 and 10 are bolts and nuts, 11 is a shaft rod, 12 is a shaft, 1
3 is the ring, 14 is the rope, and P is the main material.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A rail 1 is installed along the main material P of a utility pole, steel tower, steel structure, or other high-rise structure, and a safety device 5 equipped with a sliding means 3 and a locking means 4 is attached to a frame 2. In the fall prevention safety device that fits on the rail 1 and moves up and down, an arm rod 6 is attached to one end or both ends of the rail 1, and the side of the safety device 5 is located on the opposite side of the arm rod 6. A back-fitting prevention device for a safety device for fall prevention, characterized by a structure in which a stopper arm 7 is provided protruding from the bottom. 2. The reverse fitting prevention device for a fall prevention safety device as set forth in claim 1, wherein the arm rod 6 is attached to the rail 1 by a gripping tool 8 and a bolt/nut 9. 3. The reverse fitting prevention device for a fall prevention safety device according to claim 1, wherein the arm rod 6 is directly attached to the rail 1 with a screw or bolt/nut 10. 4 The support arm 7 provided on the safety device 5 is attached to the shaft rod 11 on the frame body 2.
A back-fitting prevention device for a fall prevention safety device according to claim 1, 2, or 3 of the utility model registration claim, characterized in that the structure has a protruding structure. 5 Utility model registration claims 1 and 2, characterized in that the support arm 7 provided on the safety device 5 has a structure in which one shaft 12 of the safety device is extended and protruded to one side. A back-fitting prevention device for a fall prevention safety device according to item 2 or 3. 6 Utility model registration claim 1 characterized in that the support arm 7 provided on the safety device 5 has a structure in which a part of the frame body 2 protrudes
A back-fitting prevention device for a fall prevention safety device as described in Item 2 or 3.