JP3118480U - Buffer ring and safety securing rope using the same - Google Patents

Abstract

A lightweight shock absorber having a large buffer capacity and a safety securing rope using the same are provided.
A strong steel wire 1 (for example, nickel chrome steel wire) is bent to provide a long hole portion 3 through which a safety belt 2 is inserted, and is bent at a right angle from a central portion to be parallel to a center line 4. The narrow portion 5 is formed, the isolated portions 6, 6 bulging outward from the narrow portion 5 are bent, the ends thereof are connected to the isolated portion 7, and the opening of the isolated portion 7 is formed. The shock-absorbing ring 10 according to the present invention was configured by connecting the protrusions 8 and 8 to the side to form the arcuate portion 7 in a substantially circular shape.
[Selection] Figure 1

Description

  This device, when performing various work in high places or places where there is a risk of falling, when the worker falls from the scaffold, prevents the worker from falling and generates an effective buffering action when ensuring safety The present invention relates to a buffer ring to be used and a safety securing rope using the same.

  Conventionally, safety belts for safety and safety ropes worn by workers have been used as a set and have demonstrated excellent effects.However, for shock absorbers installed in safety ropes, springs etc. There is no effective proposal outside the intervention.

As the shock absorber, a relatively light weight and a large shock absorbing effect (capacity) are preferable, but there is no proposal for satisfying these contradictory characteristics.
6-68765 Utility model registration No. 2600771

  Conventional safety belts (safety belts) for securing safety use, for example, a D-ring to connect the safety belt and the safety securing rope. However, while it is lightweight, there is a problem that the buffer capacity is small. It was.

  There is also a proposal (Patent Document 1) that uses an elastic member such as a spring, but there is a problem that the weight increases when the buffer capacity is increased.

  This device solves the above-mentioned conventional problems by using a buffer ring having a bent portion instead of the conventionally used D ring (reference numeral 4 in Patent Document 1).

  In other words, this invention is a buffer ring characterized in that a steel wire is bent to form a long hole portion for inserting a belt and a mounting hole portion for securing a safety rope, which are connected by a bent portion. The part is formed by connecting the projecting part to the outside and the narrow part to the inside symmetrically with respect to the center line. In another device, the mounting hole portion is formed in a substantially circular, U-shaped or elongated shape with a protruding edge, and the bent portion is formed symmetrically with the same shape with respect to the center line. Is.

  Next, another device is characterized in that one end of a tough rope is attached to the mounting hole portion of the buffer ring according to claim 1 and a hook for locking to the parent rope is attached to the other end of the rope. It is a securing line.

  According to the invention, a tough and hard wire (for example, a steel wire having a diameter of 5 mm) is deformed by receiving an external force (the bent portion is stretched), so that a large amount of energy is absorbed during the deformation. Since energy is effectively used as buffer energy, a large buffer force can be expected despite being relatively small.

Table 1 was obtained as a result of a drop test of the buffer ring of the present invention and the conventionally used D ring.

  As described above, when the buffer ring of the present invention (design D ring) is used, the impact load is reduced by about 8% to 10%.

  Moreover, the breaking strength of the device D ring used above was 29.9 KN, which was confirmed to be more than twice the standard 11.5 KN.

  According to this device, since the D ring formed by bending the steel wire is formed between the safety belt and the rope, a buffer ring having a light weight and a large buffer capacity can be obtained.

  In addition, since the buffer ring is attached to the rope and used, there is an effect of obtaining a safety securing rope that is light in weight and has a large buffer capacity.

  This device is formed by bending a steel wire to form a long hole for inserting a belt and a mounting hole for a safety securing rope, and a bent portion bulging outward and a bent portion bent at the center. Are attached to each other symmetrically with respect to the center line, and the mounting hole portion is formed in a circular shape, a U shape or other shape, and is a buffer ring formed entirely by a single steel wire.

  Also, a safety rope was formed by attaching an attachment hole of the buffer ring to one end of a tough rope and attaching a hook for locking to the parent rope to the other end of the rope.

  Two or more bent portions in the above are preferable, and a symmetrical shape (and a similar shape) with respect to the center line is preferable. This is because, when an external force is applied, the buffer ring is deformed almost uniformly and can absorb energy.

  According to the above, since the buffer ring is formed by one steel wire, there is an advantage that the strength is made uniform.

  An embodiment of the present invention will be described with reference to FIG. 1. A long steel wire 1 (for example, nickel chrome steel wire) is bent to provide a long hole portion 3 through which a safety belt 2 is inserted. The narrow part 5 which is bent at a right angle from the part and formed in parallel with the center line 4 is formed, the isolated parts 6 and 6 bulging outward from the narrow part 5 are bent, and the end part is formed into the isolated part 7. And the protrusions 8 and 8 are connected to the opening side of the arcuate part 7 to form the arcuate part 7 in a substantially circular shape, thereby constituting the buffer ring 10 of the present invention.

  In the figure, 9 is a rope and 11 is a hook for locking to the master rope.

  In the said Example, when a wearer falls, it will be in the state which the operator hung to the master rope via the rope 9 with the hook 11 latched to the master rope (not shown). In this case, since a strong tensile force acts on the rope 9, the buffer ring 10 can be deformed to absorb the impact force and buffer the operator's shock. If there is a bent portion in a direction perpendicular to the center line as in the buffer ring, the buffering effect is great.

  As a result of the experiment, the buffer ring 10 is deformed by tension as shown in FIG. 3, and the impact is effectively buffered by the deformation energy.

  Referring to FIG. 2 (a), another embodiment of the present invention will be described. A single steel wire 1 is bent to provide a long hole portion 3 through which the safety belt 2 is inserted. Further, U-shaped bent portions 5a and 5a are provided symmetrically with respect to the center line 4 in a direction perpendicular to the center line 4, and the elongated hole portion 3a is provided by protruding outward as it is. The tube portion 16 is fixed to the center of the outer side of the long hole portion 3a, and the shaft portion 14 of the suspension ring 13 is rotatably attached to the tube portion 16 to obtain the buffer ring 10a of the present invention.

  Next, according to FIG. 2 (b), the long hole portions 3 and 3 for inserting the safety belt and the long hole portions 3a and 3a for connecting the ropes are connected by U-shaped bent portions 5b and 5b. Buffer ring 10b was obtained.

  Further, according to FIG. 2 (c), the elongated hole portion 3 through which the safety belt is inserted and the smaller elongated hole portions 3a, 3b are connected by U-shaped bent portions 5b, 5b, 5c, 5c, At the center part of the long hole part 3b, a U-shaped part 15 for connecting the rope was provided to obtain a buffer ring 10c of the present invention.

  The buffer rings 10a, 10b, and 10c are all used in the same manner as the buffer ring 10 shown in FIG. 1, and have different buffer capacities depending on the amount of bending, and are symmetrical with the same shape with respect to the center line 4. Is formed.

  The embodiment of the present invention will be described with reference to FIG. 4. If one end of the rope 9 is attached to the arcuate part 7 of the buffer ring 10 and the hook 11 is attached to the other end of the rope 9, the safety securing rope 12 of the present invention is constructed. Is done.

  According to the said Example, since the buffer ring 10 was attached to the safety ensuring rope 12, compared with D ring used conventionally, there exists an effect which can exhibit big buffering force.

(A) The top view of the Example of this invention, (b) Similarly a side view. (A), (b), (c) The top view of another Example similarly. The figure which extended and deformed the buffer ring similarly. The front view which abbreviate | omitted a part of safety securing rope and the safety belt similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Steel wire 2 Safety belt 3 Long hole part 5 Narrow part 6 Isolated part 7 Isolated part 10 Buffer ring 12 Safety securing rope

Claims (5)

  A buffer ring characterized in that a steel wire is bent to form a long hole portion for inserting a belt and a mounting hole portion of a safety securing rope, and the portion is connected by a bent portion.   2. The buffer ring according to claim 1, wherein the bent portion is formed by connecting the projecting portion toward the outside and the narrow portion toward the inside symmetrically with respect to the center line.   The shock-absorbing ring according to claim 1, wherein the mounting hole portion is formed in a substantially circular, U-shaped, or long hole shape by providing a protruding edge.   The buffer ring according to claim 1 or 2, wherein the bent portions are formed symmetrically with the same shape with respect to the center line.   A safety securing rope, wherein one end of a tough rope is attached to the attachment hole of the buffer ring according to claim 1, and a hook that is locked to the parent rope is attached to the other end of the rope.

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