JPH0223328Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is primarily concerned with improving a device for adjusting the length of a fall prevention rope.

Conventionally, in this type of device, the roller 10 was fitted into the roller fitting portion 9 and could slide only within the range of the long groove 6 provided in the cover plate 7. Therefore, when attaching it to a rope, it is necessary to pass one end of the rope around the roller 10 and into the roller fitting portion 9, which requires a great deal of effort. Furthermore, since the rope cannot be attached or detached midway, one regulator is required for each rope, which is uneconomical.

The object of the present invention is to eliminate and improve such drawbacks, and to provide a device that can be easily attached and detached at the middle of the rope and that can smoothly adjust the length of the rope.

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

In the description of this embodiment, the terms "up, down, left, and right" refer to the top, bottom, right, and left with reference to FIG.

As shown in the figure, in this embodiment, a long groove 2 extending vertically is provided in the center of a hook plate 1, a hook portion 3 is provided by folding the upper end portion to one side, and a shaft rod for closing the hook opening is provided in the hook portion 3. 4 is screwed through to form a main body 5, a lid plate 7 is formed by providing a long groove 6 extending in the vertical direction corresponding to the long groove 2 of the main body 5 and shorter than the long groove 2 in the central part, and forming a cover plate 7. The upper side of the side wall pieces 8, 8 is wide,
The lower sides overlap the left and right sides of the front side of the main body 5 in a state where they face each other so as to become narrow, and the cover plate 7 is overlapped from above, and the overlapped portions on both sides are each formed into a plurality of pieces. A tapered roller fitting part 9 is provided between the side wall pieces 8 and 8 on both sides, and a roller 10 is fixed to the shaft 13 in the roller fitting part 9.
An adjustment shaft 11 that is inserted into the long groove 2 of the main body 5, passes through the center of the roller 10, and is inserted into the long groove 6 of the cover plate 7.
The adjusting shaft 11 is provided with a spring 12 which always biases the tip end thereof in the direction of fitting into the long groove 2, and the roller 10 and the adjusting shaft 11 are connected to the long groove 2 of the main body 5 and the long groove 6 of the cover plate 7. It has a structure that allows it to slide freely within the range of .

To use the invention, as shown in Figure 5,
For example, during work such as assembling power transmission towers, moving ropes 14 and other fall prevention ropes are hung at several locations from high places, and workers usually attach the tips of these ropes to safety belts worn on their bodies. They are combined to perform work at heights. However, the moving rope 14 is generally used with a length of 5 m to 7 m, and although there is no problem when the rope is almost stretched (for example, the working state shown on the right side of Fig. 5), If the rope is used in a slackened state (for example, the state shown on the left side of Figure 5), if the worker were to fall while working, he or she would fall a considerable distance, and the rope would not be able to prevent the fall. However, there is a risk of injury due to the high impact load that the worker receives, or of colliding with other objects while falling.

Therefore, the adjuster S of the present invention is attached to a steel tower member at an intermediate work site or a ring of a mounting rope 15 to which the moving rope 14 is attached.In this case, the shaft rod 4 is returned and the hook part 3 is After engaging the ring or other member, the shaft rod 4 is screwed on. If necessary, the operator connects the intermediate portion of the moving rope 14 to the regulator S of the present invention to perform the work. To attach the movable rope 14 to the regulator S, as shown in Figs. 7 is retracted from the long groove 6 of the main body 5, so when the adjusting shaft 11 and the roller 10 are slid upward in this state, the adjusting shaft 11 slides inside the long groove 2 of the main body 5 and the roller 1
0 moves upward from the roller fitting portion 9 and comes off from the cover plate 7. In this state, a necessary intermediate part of the rope such as the moving rope 14 is folded back, and the folded part is inserted through the lower opening of the roller fitting part 9 and wound around the roller 10. In this state, the rope 14 and roller 10 are moved downward to return the roller 10 to the roller fitting part 9, and at the same time, the tip of the adjustment shaft 11 is fitted into the long groove 6 of the cover plate 7. The connection between the rope 14 and the adjuster S is now complete, but if the length of the rope 14 is to be changed during the work, it can be easily adjusted in the same manner as described above. In addition, if a worker falls while using the regulator S of the present invention, the worker will fall by the length of the rope between the regulator S and the worker, and the falling distance will be short and the impact load will be reduced. is also low and safe. Also,
When the roller 10 is in the roller fitting part 9, a worker falls and the rope 14 is suddenly pulled downward (in the direction of arrow B). Since the rope 8 is tapered downwardly, the roller 10 enters therein and firmly holds the rope between the side wall piece 8.

The present invention is constructed as described above, and the adjustment shaft 1
By inserting and removing the rope 14 and sliding the roller 10, it is possible to easily attach or detach the intermediate portion of the rope 14 and adjust the length of the rope. Furthermore, by disposing the regulator S of the present invention at a necessary location in the high-altitude work area, any moving rope 14 etc. can be used as needed, so that the moving rope Practical effects such as being economical and not requiring a regulator every 14 can be obtained.

[Brief explanation of drawings]

Figure 1 is a front view of the rope expansion/contraction adjuster of the present invention;
FIG. 2 is a right side view of the device, FIG. 3 is a front view of the present invention with a rope inserted therein, FIG. 4 is a right side view of the device, and FIG. 5 is a view of the device in use. Codes in the figure: 1 is a hook plate, 2 and 6 are long grooves, 3
is a hook part, 4 is a shaft rod, 5 is a main body, 7 is a cover plate, 8 is a side wall piece, 9 is a roller fitting part, 10 is a roller, 11 is an adjustment shaft, 12 is a spring, 13 is a shaft, 14 is a movement The rope, 15 is a rope with a stand, and S is a regulator.

Claims (1)

[Scope of utility model registration request] A hook part 3 is provided at the upper end of the hook plate 1, which has a long groove 2 extending in the vertical direction in the central part, and a closing shaft 4 is screwed onto the hook part 3 to form a main body 5. The cover plate 7 is formed by providing a longer groove 6 at a position corresponding to the length of the cover plate 7, and two side wall pieces 8, 8 are interposed on both sides to superimpose and fix the main body 5 and the cover plate 7. A tapered roller fitting part 9 that narrows downward is provided between the wall pieces 8, 8, and a roller 10 is fitted into the roller fitting part 9, passing through the roller 10 from the long groove 2 of the main body 5. An adjustment shaft 11 whose tip end fits into the long groove 6 of the cover plate 7 is provided, and the adjustment shaft 11
is provided with a spring 12 that urges the tip of the spring 12 in the direction of fitting into the long groove 6, and the roller 10 and the adjustment shaft 11
A rope expansion/contraction adjuster characterized by a structure in which the rope can slide in the long grooves 2 and 6.