JPH06218072A - Structure for molding safe rope for height working and holder with the structure - Google Patents

Abstract

PURPOSE:To provide a novel structure for safely and reliably Rolding a safety rope for height working which can simply stretch the safe rope (master rope) and hold it safely and surely further, and to provide a holder having such a structure. CONSTITUTION:It is so arranged to be made up of a fixing device 1 to hold a height component member 27 by clamping it at an edge part or the like, a case 8 which is linked to the fixing device 1 free to load or unload and houses a drum 21 with a reverse rotation prevention mechanism allowed to wind or deliver a safety rope 19, a pole 13 which is linked to the case 8 to let the safety rope 19 be inserted therethrough and extends to a specified height and a retaining ring 16 fixed on an end part of the pole 13. This enable the safety rope 19 and holder 30 to be always integrated and pulled out giving proper tension while allowing a load being shared with an adjacent holder to be received evenly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety rope holding structure and cage for aerial work, and particularly to a safety rope (lifeline) for ensuring the safety of workers in aerial work such as construction work.
The present invention relates to a new structure for securely and securely holding

[0002]

2. Description of the Related Art In high-rise work such as high-rise building construction, bridge construction work, and steel tower construction work, it is obliged that a high-rise worker perform work by connecting life lines. This lifeline consists of a safety rope wrapped around the waist of a worker and a safety rope of a specified length connected to the end of the safety rope. Various work at high places is performed by hanging the wire around the work area). The safety rope is supported by poles that are erected at regular intervals between the bone pillars of the high-rise constituent members such as the skeleton of the building (see Japanese Utility Model Publication No. 2-46920).

[0003] This pole has a vise at the lower end for holding a high-rise component such as a steel frame of a frame, and an annular body for inserting or fastening a wire rope is attached at the upper end.

[0004]

However, such a safety rope facility is not removed for a relatively long period of time.
Although the installation will be carefully considered at first and the structure will be sturdy, it tends to be neglected if the structure is extremely unstable and the usage period is short, such as steel frame assembly, removal of temporary equipment installation, installation and removal of mountain support. Is. In addition, even if you have equipment for safety searches, it is often not possible to call it a satisfactory facility.

That is, in the case of a safety rope in which a wire rope is stretched between a pair of bone pillars via a turnbuckle on a metal fitting that holds a high-rise component such as a bone pillar of a skeleton, the distance between the attachments of the metal fittings that become anchors If the distance is large, if the worker should fall, the amount of bending of the wire rope will be large, and the length of the safety rope connected to the safety belt wrapped around the waist of the worker and the length of the bending of the safety rope due to the fall will be Since the added drop height adds to the worker in consideration of the weight of the worker, a considerable impact is applied to the human body even if the safety rope is not cut,
Secondary disasters may occur.

[0006] Further, poles for biting and fixing high-rise components such as trabecular bones of the skeleton are erected at required intervals, and a wire rope is inserted through the annular body provided at the upper end of the poles and stretched. In the case of just the safety rope, the drop height can be reduced by setting the interval between the poles, but the force applied to the pole differs depending on the position where the worker works.

Further, in the case where the safety rope is simply inserted without connecting the wire rope to the annular body,
The load on the poles at both ends is more, and the poles may be damaged, so the safety is not sufficient. Further, since one continuous wire rope is used, the tensioning work takes time, which is not practical.

In any of the above cases, it is needless to say that if the equipment should be calculated and installed with due consideration of the conditions, it can be sufficiently dealt with even in the unlikely event that such equipment is installed. Is time consuming, labor intensive, and
Depending on the short-term construction or construction site, it is easy to be neglected or neglected emotionally.

Therefore, in view of the above-mentioned conventional circumstances, the present invention is capable of easily laying a safety rope for ensuring the safety of a worker at a high place, and has a novel height for safe and reliable holding. (EN) Provided are a holding structure and a retainer for a work safety rope.

[0010]

In order to achieve the above-mentioned object, the present invention independently provides a plurality of cages which are fixed to a part of a high-altitude component member and fixedly installed at a predetermined interval. A retractable safety rope of a specified length and retractable to store it with a reverse rotation prevention mechanism, and pull out the safety rope and hook it on the adjacent locking ring to tension the cage with appropriate tension. Further, there is provided a safety rope holding structure for working at high places, which is formed by connecting a safety rope for a worker to the safety rope.

Further, a fixture for tightening and biting the edge portion of the high-altitude constituent member and a drum with a reverse rotation preventing mechanism which is detachably connected to the fixture and is capable of winding and unwinding a safety rope are housed. Provided is a structure of a retainer for a work rope for high places work, which comprises a case, a pole connected to the case and extending through the safety rope to extend to a predetermined height, and a locking ring fixed to an end of the pole. To do. Further, the guide pipe for extending the safety rope in the direction orthogonal to the pole is provided at the upper end of the pole, the edge of the guide pipe is rounded, and the drum with a reverse rotation preventing mechanism has a handle. There is provided a structure in which a ratchet wheel is pivotally mounted on a shaft, and a pawl that engages and disengages with a tooth portion of the ratchet wheel is pivotally mounted on a case so as to be swingable.

[0012]

According to the present invention having the above-mentioned structure, when the worker's safety rope is connected to the appropriately tightened safety rope and the required work is performed, and in the unlikely event that the worker falls, the fall distance of the length of the safety rope is used. Moreover, the plurality of cages are evenly subjected to the drop load and the worker is not subjected to an excessive impact. In other words, the safety rope is built into each cage, and the safety ropes stretched between the cages are independent, so even if an operator falls, shorten the fall distance. The physical load on the operator can be reduced, and the load can be evenly received by the plurality of cages, which is safe.

The retainer bites the high-altitude component with a strong fastener such as a vise. For the tensioning and tensioning of the safety rope, the safety rope wound around the drum with the reverse rotation preventing mechanism is taken out by removing the reverse rotation preventing mechanism, or the safety rope is tensioned by setting the reverse rotation preventing mechanism.

[0014]

An embodiment of the present invention will be described below with reference to the drawings. First, the structure of the cage 30 according to the present invention will be described.
As shown in FIGS. 1 and 2, the screw 2 is orthogonally screwed to the U-shaped fixture 1 that holds the edge portion of the H-shaped steel 27 that is a high-altitude component, and the vise that rotates the screw 2 is used. And the like. The fastener 3 is formed by connecting a one-way clutch having a handle 4 capable of being folded in the middle to the head of the screw 2. The fixture 1 is provided with a tubular connecting portion 5 for connecting the case 8.

The connecting portion 5 has a connecting pin 6 into which the insertion base portion 7 of the case 8 is fitted and inserted into both of them. The connecting pin 6 has a rotatable end 6a connected by a shaft 6b so that the tip of the connecting pin 6 is bent to prevent it from coming off.

The case 8 integrally connected to the insertion base 7 by welding or the like has a circular shape. A shaft 20 having a ratchet 9 at the shaft center of the case 8 is rotatably inserted by a bearing 22 and the ratchet is provided. A pawl 10 which is engaged with and disengaged from the shaft 9 is swingably provided. Then, a pole 13 having a predetermined length is connected to the case 8 integrally with the connecting portion 5 at a predetermined angle by welding or the like.

The shaft 20 has a base portion 23, as shown in FIG.
A handle 11 capable of being bent in the middle is attached by pivoting. A clamp 12 that clamps and fixes the end of the handle 11 is attached to the base of the pole 13. Similarly to the gripping tool 12, a gripping tool 14 for fixing the end portion of the handle 4 is provided on the pole 13 in a protruding manner. A drum 21 is integrally and rotatably fixed to a shaft 20 in the case 8, and one end of a safety rope 19 such as a wire rope is fixed to the drum 21 to a predetermined length (about 5 m in the embodiment). ) Is wound.

The safety rope 19 passes through the pole 13, penetrates the guide pipe 17 attached to the upper end portion, extends to the outside, and the hook 24 is connected to the other end portion. Guide pipe 1
Reference numeral 7 is a curved pipe for leading out the safety rope 19 in a direction orthogonal to the pole 13, and is connected to a pipe 26 which is inserted into the pole 13 and fixed with a screw 25. This guide pipe 1
The edge of 7 is rounded so that the safety rope 19 will not be damaged even if the safety rope 19 is loaded. An inverted U-shaped locking ring 16 is fixedly attached to the upper end of the pole 13.

On the upper part of the locking ring 16, a locking member 18 made of steel wire wound in a spring shape for inserting a rope or the like and locking is connected, and a locking device similar to this. A pole 15 is fixedly attached to a side surface of the pole 13 at a substantially central portion thereof.

Next, the operation of the above embodiment will be described with reference to FIG.
As shown in, a plurality of cages 30 are attached and fixed to the edge portion of the H-shaped steel 27 at a high place work place at predetermined intervals. That is, as shown in FIGS. 1 and 2, the edge portion of the H-shaped steel 27 is clamped by the fixture 1 and the handle 4 is rotated to screw the screw 2 into the H-shaped steel 2.
The pole 13 is erected by tightening and fixing to 7,
When the tightening and fixing are completed, the end portion of the handle 4 is sandwiched by the clamp 14 so as not to obstruct the passage of the worker.

When the edge portion of the H-shaped steel 27 is not sideways but upward, the pin 6 is pulled out, the insertion base 7 is pulled out from the connecting portion 5, and the fixture 1 is swiveled 90 degrees and fixed similarly. If the two are fitted again and the pin 6 is inserted, the orientation of the fixture 1 can be changed as shown by the phantom line in FIG. 2 (in the case shown by the phantom line, the right side of the drawing is the upper side). ). That is, by changing the fixing direction of the fixture 1, the H-shaped steel to be fixed can be fixed either horizontally or vertically.

Further, a fixture 44 having a structure similar to that of the fixture 1 is fastened and fixed to the H-shaped steel 27 adjacent to the retainer 30 at the left end. As shown in FIGS. 4 and 5, this fixing tool 44 includes a main body 40 formed of a U-shaped metal fitting capable of biting the edge portion of the H-shaped steel 27, screwed with a screw 43 so that the handle 43 can be tightened, and A hook 4 in which a locking ring portion 41 is connected to 40 by welding or the like and is connected to both ends of a support rope 45.
6,46 etc. can be hooked.

Therefore, the fixing tool 44 and the retainer 30 at the left end in FIG. 6 are connected by the support rope 45 formed by connecting the hooks 46, 46 to both ends of the wire rope of a predetermined length. That is, the hook 46 at one end of the support rope 45 is attached to the locking ring portion 41 of the fixture 44, and the hook 46 at the other end is attached to the first portion.
It is hooked on the locking ring 16 of the holder 30 of FIG. The inclination angle of the support rope 45 is preferably about 45 degrees.

Then, the hook 24 at the end of the guide pipe 17 of the leftmost retainer 30 is pulled to pull out the safety rope 9, and the hook 24 is hooked on the locking ring 16 of the second retainer 30 from the left. Fix it. Then, in order to appropriately tension the safety rope 19, the handle 11 is rotated to rotate the drum 21.
Is turned, and the pulled out safety rope 19 is wound around the drum 21. After the handle 11 is used, the handle 11 is folded inwardly and the end portion is fixed by the clamp 12 so as not to obstruct the passage of the worker.

When the handle 11 rotates and the shaft 20 rotates, the ratchet 9 rotates while repelling the pawl 10 and the drum 2
1 rotates and the safety rope 19 is wound around the drum 21,
Even if the safety rope 19 is about to extend, the claw 10 is the ratchet 9
Therefore, the safety rope 19 is not paid out, so that the proper tension of the safety rope 19 can be obtained.

Then, the hook 24 at the end of the guide pipe 17 of the second cage 30 from the left is pulled to pull out the safety rope 1.
9 is pulled out, and its hook 24 is hooked and fixed to the locking ring 16 of the third retainer 30 in FIG. Then, in order to properly tension the safety rope 19, the handle 11 is rotated to rotate the drum 21, and the pulled-out safety rope 19 is wound around the drum 21.

Further, the third cage 30 from the left in FIG.
The hook 24 at the end of the guide pipe 17 is pulled out to pull out the safety rope 19, and the hook 24 is hooked and fixed to the locking ring 16 of the retainer 30 at the right end in FIG. Then, in order to properly tension the safety rope 19, the handle 11 is rotated to rotate the drum 21, and the pulled-out safety rope 19 is wound around the drum 21. By repeating this work, the necessary safety rope 19 is stretched according to the work area.

Finally, a fixture 44 having the same structure as the fixture 44 is attached to the H-shaped steel 27 adjacent to the cage 30 at the right end.
Is fastened and fixed, and the fixture 44 and the cage 30 at the right end
Between the and, the safety rope 19 of the retainer 30 is pulled out, the hook 24 thereof is hooked on the locking ring portion 41, and the handle 11 is turned to be appropriately tensioned. The inclination angle of the safety rope 19 is about 4
5 degrees is good. In addition, you may reinforce the support of the holder | retainer 30 by inserting a suitable rope in the locking tools 15 and 18.

Thus, as shown in FIG.
The work is performed by hooking the hook 53 at the end of the safety rope 52 of a predetermined length connected to the safety belt 51 wound around the waist on the safety rope 19 at a required portion. If the worker 50 falls, the safety rope 19 to which the hook 53 is connected is kept properly tensioned without being extended from the retainer 30, and is also held by another adjacent member. Since it is linked to the container 30, the other holder 30
The load can be evenly received, and the worker 50 can be safely suspended.

[0030]

According to the present invention described above, a safety rope is accommodated in a retainer so that the safety rope can be wound up in a predetermined length, and the withdrawal end of the safety rope is connected to another adjacent retainer. Therefore, even if a worker should fall, the safety ropes between the cages are moderately tensioned, and since the safety ropes are independent, the safety ropes have a small amount of deflection, so they are connected to the worker's waist. The fall distance is about the length of the safety rope.

Further, since the falling load is evenly received by the plurality of cages, an excessive physical load is imposed on the worker, and an excessive load is applied only to the cages at both ends to damage them. Damage is prevented.

Moreover, since the safety rope is stored in the retainer so that it can be freely pulled out, the safety rope and the retainer are always integrated with each other, so that the safety rope and the retainer are convenient to handle, install and transport without separating them. .

Moreover, since the fixing portion and the pole portion of the cage can be separably connected to each other so that the mounting angle of the fixing portion can be changed, the H-section steel can be oriented vertically or horizontally instead of horizontally. Can be fastened and fixed to.

[Brief description of drawings]

FIG. 1 is a partial sectional front view showing an embodiment of a cage according to the present invention.

FIG. 2 is a side view showing an embodiment of a cage according to the present invention.

FIG. 3 is a sectional front view of a main part.

FIG. 4 is a side view of the end fixture.

FIG. 5 is a front view of the end fixture.

FIG. 6 is a schematic diagram of a retainer and a cord of a safety cord.

FIG. 7 is a schematic diagram of an arrangement of cages in a work place at a high place.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Fixing tool 2 ... Screw 3 ... Fastener 4, 11 ... Handle 5 ... Connecting part 6 ... Connecting pin 7 ... Inserting base 8 ... Case 9 ... Ratchet 10 ... Claws 12, 14 ... Clamping tool 15, 18 ... Locking Tool 13 ... Pole 16 ... Locking ring 17 ... Guide pipe 19 ... Safety rope 20 ... Shaft 21 ... Drum 27 ... High-altitude component (H-shaped steel)

Claims (5)

[Claims] 1. A safety rope of a predetermined length is independently extended and rewound to a plurality of cages that are fixed to a part of a high-altitude constituent member and fixed at predetermined intervals and stand upright. A reverse rotation prevention mechanism is installed in the housing for storage, and the safety rope is pulled out and hooked on the adjacent locking ring, and tensioned between the cages with appropriate tension,
A safety rope holding structure for working in high places, characterized in that the safety rope is connected to the safety rope. 2. A fixture for tightening and biting on an edge portion of a high-altitude constituent member, and a drum with a reverse rotation preventing mechanism which is detachably connected to the fixture and is capable of winding and unwinding a safety rope. Retaining a safety rope for high-place work, comprising a case, a pole connected to the case and extending through the safety rope to extend to a predetermined height, and a locking ring fixed to an end of the pole. vessel. 3. A retainer for a safety rope for work in high places according to claim 2, wherein a guide pipe for extending the safety rope in a direction orthogonal to the pole is provided at an upper end portion of the pole. 4. The retainer for a safety rope for high-place work according to claim 3, wherein the edge portion of the guide pipe is rounded. 5. The reverse rotation preventing mechanism drum comprises a ratchet wheel mounted on a shaft having a handle, and a pawl that engages and disengages with a tooth portion of the ratchet wheel mounted on a case so as to be swingable. Retainer for safety rope for work in high places described in 3, 4 above.