JP2009215736A - Main rope stretching implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a main rope stretching implement which enables a main rope to be surely stretched along a roof, and can minimize damage suffered by an operator by absorbing an impact force caused by a fall even if the operator falls from the roof. <P>SOLUTION: This main rope stretching implement stretches the main rope 21 for hooking a life rope 24 along the roof 23. The main rope stretching implement comprises a base 1 which is equipped with a fixing bracket 5 and a central beam material 4 arranged in parallel with the main rope 21, and a support 9 for hooking the main rope 21 which is vertically fixed on the central beam material 4. The base 1 is detachably fixed to the roof 23 by the fixing bracket 5. The central beam material 4 is deformed by a load which is applied via the life rope 24, the main rope 21 and the support 9 when the operator falls so as to absorb the impact force suffered by the operator. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  This invention absorbs the impact force caused by dropping even if the operator falls from the roof, as well as the parent rope tensioning device, in particular, the parent rope can be reliably stretched along the roof. Thus, the present invention relates to a master rope tensioning tool capable of minimizing damage to the worker.

  When an operator goes up to the roof and works at a high place, in order to prevent a fall accident, the work is performed by hooking a lifeline on a master rope stretched along the roof.

  Patent Document 1 (Utility Model Registration No. 3076202) discloses a master rope that stretches a master rope on which a lifeline is hooked, along a roof having a folded plate structure. Hereinafter, this parent rope tension tool is called a conventional parent rope tension tool, and will be described with reference to the drawings.

  FIG. 5 is a perspective view showing a conventional parent rope tensioner installed on a roof having a folded plate structure, and FIG. 6 is a perspective view showing a conventional parent rope tensioner installed on the roof.

  As shown in FIG. 5, the conventional parent rope tensioner includes a base 14 and a support column 15. The base 14 includes one and the other beam members 16 and 17 made of angle steel arranged in parallel, and a fixing bracket 18 attached to both the beam members 16 and 17.

  The column 14 is fixed vertically on one beam member 16. The support column 15 and the one beam member 16 are reinforced by a reinforcing member 19, and the support column 15 and the other beam member 17 are reinforced by a reinforcing member 20, respectively. A connection ring 22 on which the hook 21 a of the master rope 21 is hooked is attached to the upper part of the support column 15.

  The fixture 18 holds the ridge 23a formed along the mountain portion of the roof 23 having the folded plate structure, and attaches the base 14 to the roof 23 in a detachable manner.

  According to the conventional parent rope tensioner configured in this way, as shown in FIG. 6, a plurality of conventional parent rope tensioners A and B are installed by the fixing bracket 18 with a gap in the roof 23. As shown in FIG. 5, the hook 21a of the master rope 21 is hooked on the connecting ring 22 of the support column 15, and the master rope 21 is stretched between the conventional parent rope tensioners A and B. And if a worker's lifeline 24 is hooked on the master rope 21 stretched in this way, the high place work on the roof 23 can be performed safely.

Utility Model Registration No. 3076202

  According to the conventional master rope tensioning tool, the master rope can be reliably stretched over the roof, so that it is possible to safely work at a high place on the roof, but there are the following problems.

  In the unlikely event that the operator falls from the roof, the column 15 is firmly fixed to the base 14 via the reinforcing members 16 and 17, so that the impact force caused by the drop is directly applied to the operator. Take a lot of damage.

  Therefore, the object of the present invention is that the master rope can be reliably stretched along the roof, and of course, even if the operator falls from the roof, the impact force due to the fall is absorbed and the work is performed. An object of the present invention is to provide a parent rope tensioning device that can minimize the damage to a person.

  The present invention has been made to achieve the above object, and is characterized by the following.

  The invention according to claim 1 is a master rope tensioning tool that stretches a master rope to which a lifeline is hooked along a roof, a base having a fixing bracket and a beam member arranged in parallel with the master rope. And a strut that is fixed vertically on the beam member and on which the master rope is hooked, the base is detachably fixed to the roof by the fixing bracket, and the beam member is It is characterized in that it is deformed by a load applied through the lifeline, the master rope, and the support column at the time of dropping to absorb the impact force received by the operator.

  The invention according to claim 2 is the invention according to claim 1, wherein the beam member has a U-shaped cross section, is fixed to the base with the web facing downward, the flange facing upward, and the strut Is characterized by being fixed on the web.

  The invention described in claim 3 is characterized in that, in the invention described in claim 1 or 2, the strut and the flange of the beam member are connected by a rib.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the roof is a roof having a folded plate structure, and the fixing bracket is along a mountain portion of the roof. It is characterized in that the base is fixed to the roof by gripping the formed ridge.

  The invention according to claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the support column is detachably attached to the beam material.

  According to the present invention, the master rope can be reliably stretched along the roof, and of course, even if the operator falls from the roof, the beam material to which the column is fixed is dropped. By deforming with an impact force, the impact force can be absorbed and the damage to the operator can be minimized.

  One embodiment of the parent rope tensioner of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing the master rope tensioner of the present invention, FIG. 2 is a plan view showing the parent rope tensioner of the present invention, and FIG. 3 shows a fixing bracket of the parent rope tensioner of the present invention. The perspective view shown and FIG. 4 are perspective views which show the parent rope tension tool of this invention installed in the roof.

  In FIG. 1 to FIG. 4, reference numeral 1 denotes a base, which is a central portion that connects between two side beam members 3 having both ends connected by a reinforcing material 2 and a central portion of the side beam members 3. It consists of a beam member 4 and a fixture 5 attached to the bottom of the side beam member 3. Each of the side beam members 3 and the central beam member 4 is made of channel steel having a U-shaped cross section, and is assembled in an H shape with the web facing downward and the flange facing upward. The reason why the central beam member 4 is disposed with the web facing down and the flange facing upward is to easily twist and deform the central beam member 4 due to the drop load of the operator, as will be described later. .

  As shown in FIG. 3, the fixing bracket 5 is composed of two gripping pieces 6 and 6 and a bolt 7 having a substantially U shape. The upper flanges 6a, 6a of the gripping pieces 6, 6 are formed with cuts, and are connected so as to cross each other by inserting the cut parts into each other, and bolts 7 are inserted into the connected upper flanges 6a, 6a. . The bolt 7 is inserted into a bolt hole (not shown) formed in the web of the side beam member 2 from the arc-shaped cutouts 6 c and 6 c formed in the lower flanges 6 b and 6 b, and is tightened by the nut 8. By tightening the nut 8, the lower flanges 6 b and 6 b are opened and closed with the upper flanges 6 a and 6 a as fulcrums, whereby the ridges 23 a formed along the peaks of the roof 23 can be gripped.

  Reference numeral 9 denotes a column fixed vertically on the web 4 a of the central beam member 4. On both sides of the upper part of the support column 9, a connecting ring 10 on which the hook 21 a of the master rope 21 is hooked is attached. The support column 9 and the flange 4 b of the central beam member 4 are connected by a rib 11. The rib 11 has a function of reliably transmitting the bending load applied to the support column 9 due to the fall of the operator to the central beam member 4. When a bending load is applied to the column 9, the lower end of the column 9 is fixed to the web 4 a of the central beam member 4, so that the central beam member 4 is deformed so that the central portion in the length direction is twisted. Due to the torsional deformation of the central beam member 4, the impact force due to the drop of the operator is absorbed, and damage to the operator can be minimized. If the sleeve 12 into which the lower part of the column 9 can be inserted is fixed to the rib 11 and the lower part of the column 9 can be fixed to the sleeve 12 with the bolts 13, the column 9 can be attached to and detached from the central beam member 4. Therefore, it becomes easy to carry the parent rope tensioner.

  According to the master rope tensioning device of the present invention, as shown in FIG. 4, a plurality of master rope tensions are provided at intervals on the roof 23 so that the master rope 21 and the central beam member 4 are parallel to each other. The tool is installed by gripping the ridge 23 a formed along the mountain portion of the roof 23 by the fixing bracket 5. Next, the hook 21a of the master rope 21 is hooked on the connecting ring 10 of the support column 9, and the master rope 21 is stretched between the master rope tensioners. As described above, when the master rope 21 is reliably stretched along the roof 23, it is possible to safely perform work at a high place on the roof 23 by hooking the lifeline 24 of the worker onto the master rope 21.

  If the operator falls from the roof 23, the load is transmitted to the central beam member 4 via the lifeline 24, the master rope 21, and the support column 9, and the central beam member 4 is twisted and deformed. By deforming the central beam member 4 in this way, the impact force due to the fall is absorbed, and the damage to the operator is minimized.

  As described above, according to the master rope tensioning tool of the present invention, the central beam member 4 is easily twisted and deformed by the operator's drop load, so that the impact force due to the fall is absorbed and received by the operator. Although damage can be minimized, the shape and arrangement of the central beam member 4 are not limited to the above examples as long as they can be easily deformed by a drop load.

It is a perspective view which shows the master rope tension tool of this invention. It is a top view which shows the master rope tension tool of this invention. It is a perspective view which shows the fixing metal fitting of the parent leash tension tool of this invention. It is a perspective view which shows the parent rope tensioner of this invention installed in the roof. It is a perspective view which shows the conventional master rope tension installation tool installed in the roof of a folding plate structure. It is a perspective view which shows the state which stretched the master rope with the conventional master rope tension tool.

Explanation of symbols

1: Base 2: Reinforcement material 3: Side beam material 4: Center beam material 4a: Web 4b: Flange 5: Fixing bracket 6: Holding piece 6a: Upper flange 6b: Lower flange 6c: Notch 7: Bolt 8 : Nut 9: support 10: connecting ring 11: rib 12: sleeve 13: bolt 14: base 15: support 16: one beam 17: other beam 18: fixing bracket 19: reinforcement 20: reinforcement 21 : Master rope 21a: Hook 22: Connection ring 23: Roof 23a: Rib 24: Lifeline

Claims (5)

In the master rope tensioning tool that stretches along the roof the master rope to which the lifeline is hooked,
A base including a fixing bracket and a beam member arranged in parallel with the master rope; and a support vertically fixed on the beam member on which the master rope is hooked. The beam is detachably fixed to the roof by a fixing bracket, and the beam is deformed by a load applied through the lifeline, the master rope and the support column when the operator falls, and absorbs an impact force received by the operator. A parent rope tensioning tool characterized by doing.   The beam member has a U-shaped cross section, is fixed to the base with a web facing downward, and a flange facing upward, and the column is fixed on the web. The parent rope tension tool according to 1.   The parent rope tensioning tool according to claim 1 or 2, wherein the strut and the flange of the beam member are connected by a rib.   The roof is a roof having a folded plate structure, and the fixing bracket fixes the base to the roof by gripping a protrusion formed along a mountain portion of the roof. The parent rope tensioning tool according to any one of claims 1 to 3.   The parent strut tensioner according to any one of claims 1 to 4, wherein the support column is detachably attached to the beam member.

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