JP2000027576A - Ladder for roofing work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ladder for roofing works, by which a finished surface such as a roof surface is not damaged at the time of installation. SOLUTION: A cover member 26 having a recessed section 27, in which a fixing member 25 is housed, and a hole section 28, in which the end section of a sash-bar member 23 is housed, and being made of a rubber is mounted on the ladder 20 for roofing works installed along the inclined direction of a roof surface, and the fixing member 25 is covered with the cover member 26 while the sash-bar member 23 and the fixing member 25 are combined under the state, in which the cover member 26 is pinched between the sash-bar member 23 and the fixing member 25. Accordingly, no roof surface is damaged by normal usage because the cover member 26 need not be fixed separately to the fixing member 25 and hard sites projected from the surface are removed completely at the end section of the sash-bar member 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder for roof work, which is disposed along a slope of a sloped roof and serves as a scaffold for performing work on the sloped roof.

[0002]

BACKGROUND ART Roofs for houses and the like are formed by installing a roof base material such as a roof panel on the main body of the building and applying a roofing to the top surface of the roof base material and attaching a roof finishing material to the roof. Is done. Since this roof finishing work is an altitude work performed on the roof base material on the building body, wrap a lifeline connected to a pole erected in the building around the waist etc. to ensure the safety of workers. I was Also, ladders for roof work are used to secure scaffolds. As shown in Japanese Patent Application Laid-Open No. 10-131444, this ladder is a rope ladder in which a plurality of step members made of a square metal pipe are connected by wires. At both ends of the step member, a step base abutting on the roof surface is fixed with U-shaped bolts. This step base is
The step member is a metal plate member fixed to the front surface and rubber is attached to the back surface. By using this rubber, the purpose is to prevent slippage and to prevent damage to the roof surface.

[0003]

In such a ladder for roof work, a hard part such as a corner of a metal step member or a plate member, or a top of a U-shaped bolt is protruded, so that the roof ladder is not supported. At the time of installation, careless handling may cause a problem that a finished surface such as a roof surface may be damaged.

[0004] It is an object of the present invention to provide a roof work ladder that does not damage a finished surface such as a roof surface during installation.

[0005]

According to the present invention, referring to the drawings, a plurality of bar members 23 arranged in parallel along the inclination direction of a roof surface, and ends of these bar members 23 are formed. A roof ladder having a connecting member to be connected to each other and a fixing member for fixing the beam member to the connecting member, a cover formed of an elastic member covering the fixing member. A member 26 is provided. The cover member 26 has a concave portion 27 provided at the bottom for accommodating the fixing member 25 and a hole 28 provided on a side surface for accommodating an end of the beam member 23. And
Further, the cross member 23 and the fixing member 25 are coupled with the cover member 26 interposed therebetween. In the present invention as described above, the cover member 26 covers the end of the beam member 23 and the fixing member 25, and the beam member 23 and the fixing member 25 sandwich the cover member 26. In this state, the beam member 23 and the fixing member 25 are fixed. 25, the cover member 26 does not need to be separately fixed to the fixing member 25, and there is no hard portion protruding from the surface at the end of the cross member 23, and the cover member 26 is separated from an elastic member such as rubber. If formed, the roof surface will not be damaged in normal use.

[0006] In the above, the crosspiece 23 is desirably a cylindrical member having a substantially semicircular cross section. In this way, a flat step surface serving as a foothold can be obtained, and the step surface can be installed substantially horizontally, so that the stability as a scaffold is secured and the same rigidity is obtained. Since the wall thickness can be made thinner than that of a cylindrical body having a square cross section, the weight of the ladder can be reduced, and workability is improved.

Further, a male screw member 33 having an engagement portion 35 bent in a U-shape is provided, and a connecting member 24 penetrates the cylindrical bar member 23, and the male screw member 33 is formed inside the bar member 23.
With the engaging portion 35 of the male screw member 33 engaged with the connecting member 24, the male screw portion 38 of the male screw member 33 penetrates the cover member 26 and the fixing member 25 and projects outside the fixing member 25, and is screwed with the nut 41. Is preferred. With this configuration, the connecting member 24 is fixed by the male screw member 33 that joins the fixing member 25 and the cross member 23 to each other.
(4) No special fixing means is required, so that the end of the crosspiece member 23 is prevented from being enlarged, and the ladder is also reduced in weight in this respect.

Further, it is preferable that a non-slip surface having an uneven surface is formed around the concave portion of the cover member 26. With this configuration, the non-slip surface of the cover member 26 is brought into contact with the roof surface, so that the
3 will not suddenly deviate from the position where it was installed,
From this point, the stability as a scaffold is secured, and the safety of work on the roof surface at a high place is sufficiently secured.

The connecting member 24 is preferably a flexible wire. In this way, the ladder formed in the shape of a rope ladder can be easily folded and unfolded, and can be easily handled in installation, so that the ladder can be installed in a short time.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a building 1 under construction according to the present embodiment and a hypothetical scaffold 2 erected around the building 1. The building 1 is a unit-type building, and a plurality of box-shaped building units 4 are provided on the building body 3 in a plurality of vertical and horizontal directions. The sloping roof 5 provided on the building body 3 is based on a panel construction method in which a plurality of roof panels 6 are combined. On the other hand, the hypothetical scaffold 2 is formed by combining the vertical member 11, the horizontal member 12, and the scaffold face material 13.

The ridge 7 of the sloping roof 5 is provided with a ridge member 15 for supporting a lifeline rope 14 suspended on the sloping surface of the roof 5. The ridge member 15 is fixed across the ridge side ends of the pair of roof panels 6 opposed to each other with the ridge portion 7 interposed therebetween. The lifeline rope 14 is slidably locked in a wife direction on a ridge side rope 16 erected between ridge members 15, and the end thereof can be locked to a worker's waist or the like. Thereby, safety of the worker can be ensured when performing work such as roof finishing. Note that the lifeline rope 14 may be directly locked to the ridge member 15. A dormer 8 is incorporated in a central portion of the sloping roof 5, and a roof work ladder 20 of the present embodiment is arranged on the upper surface of each of the roof panels 6 </ b> A and 6 </ b> B installed on both sides of the dormer 8 along the inclination direction. Has been established.

As shown in FIG. 2, the roof work ladder 20 has a hook member 20 which is hooked on an upper edge of the roof panel 6.
A and a ladder main body 21 connected to the hook member 20A. The ladder main body 21 has a plurality of crosspiece members 23 arranged in parallel at predetermined intervals. These cross members 23
Are connected by a flexible connecting member 24. The connecting member 24 is a flexible wire such as a nylon rope or a wire rope, and has a length corresponding to the entire length of the ladder main body 21. As shown in FIG. 3 to FIG.
A fixing member 25 for fixing the member to the beam member 23 is provided. The fixing member 25 is a metal plate member formed in a rectangular shape, and is entirely covered by a cover member 26.

The cover member 26 is formed of rubber as an elastic body. The cover member 26 has a concave portion 27 provided at the bottom for accommodating the fixing member 25 and a side surface for accommodating the end of the bar member 23. And a hole 28 provided in the hole. The crosspiece member 23 is a cylindrical member having a substantially semicircular cross section. The hole 28 of the cover member 26 is a hole having a shape corresponding to the cross-sectional shape of the bar member 23. One end of the hole is inserted into the hole of the bar member 23, and the other opening is made of the same material as the cover member 26. 28A.
In addition, when the ladder main body 21 is installed on an inclined roof surface, the crosspiece member 23 is configured such that its plane portion is substantially horizontal.
The concave portion 27 of the cover member 26 fixed to the fixing member 25 is a depression having a shape corresponding to the fixing member 25 so that the angle formed by the flat portion and the upper surface of the cover member 26 is approximately 135 degrees. Around the recess 27, a non-slip surface 27A having an uneven surface is formed.

At this time, the end of the cross member 23 and the fixing member 25
Are connected with the cover member 26 interposed therebetween. Describing this coupling structure in more detail, the cover member 26 and the beam member 23 are provided with through holes 31 and 32 through which the connecting member 24 is inserted. Also,
The bar member 23 is provided with a rectangular elongated hole 34 through which a U-shaped male screw member 33 is inserted. The connecting member 24 that has reached the hole 28 of the cover member 26 through the through hole 31 of the cover member 26 is
And reaches the inside of the crosspiece member 23. Bar member 23
Is provided with a fastening member 37 having a pair of ring-shaped portions 36 arranged on both sides of the engagement portion 35, in which a U-shaped engagement portion 35 of the male screw member 33 is inserted. Have been. The connecting member 24 that has reached the inside of the cross member 23 includes one ring-shaped portion 36 of the fastening member 37, an engagement portion 35 of the male screw member 33, the other ring-shaped portion 36 of the fastening member 37, It reaches the outside of the cover member 26 through the through hole 32 and the through hole 32 of the cover member 26 in order.

Here, the tip 38 of the male screw member 33 is
It is a male screw portion having a thread groove formed on the side surface, passes through the insertion holes 39 and 40 penetrating the cover member 26 and the fixing member 25, protrudes outside the fixing member 25, and is screwed with the nut 41. Here, by sufficiently tightening the nut 41 to be screwed to the male screw member 33, the gap between the ring-shaped portion 36 of the tightening member 37 and the engaging portion 35 of the male screw member 33 is increased.
The connecting member 24 is sandwiched and fixed, and the cross member 23 and the fixing member 25 are joined with the cover member 26 interposed therebetween. Thereby, the connecting member 24 and the cross member 2
3. The fixing member 25 and the cover member 26 are firmly integrated.

According to the above-described embodiment, the following effects can be obtained. That is, a rubber cover that covers a fixing member 25 for fixing a plurality of cross members 23 arranged in parallel along the inclination direction and a connecting member 24 for interconnecting the ends of these cross members 23 to each other. The cover member 26 is provided with a concave portion 27 for storing the fixing member 25 and a hole 28 for storing the end of the cross member 23, and the cover member 26 is sandwiched between the cover member 26. Since the member 23 and the fixing member 25 are combined, the cover member 2
A member for fixing the fixing member 6 to the fixing member 25 becomes unnecessary, and there is no hard part protruding from the surface, so that damage to the roof surface in normal use can be prevented.

Further, a cylindrical member having a substantially semicircular cross section is adopted as the cross member 23, and a flat step surface serving as a foothold is secured, and the step surface is made substantially horizontal. Therefore, the stability as a scaffold is ensured, and the same rigidity can be obtained, and the wall thickness can be made thinner than that of a tubular body having a square cross section. Therefore, the ladder main body 21 is reduced in weight and workability is improved. Can be improved.

Further, a male screw member 33 having an engagement portion bent in a U-shape is provided, and the connecting member 24 is formed of a cylindrical cross member 2.
3 in a state where the engaging portion 35 of the male screw member 33 is engaged with the connecting member 24 inside the bar member 23.
Since the distal end portion 38 of the third member penetrates through the cover member 26 and the fixing member 25 and protrudes to the outside of the fixing member 25 and can be screwed with the nut 41, the male screw which joins the fixing member 25 and the cross member 23 mutually is provided. Since the connecting member 24 is fixed by the member 33, fixing means dedicated to the connecting member 24 becomes unnecessary, and the end of the crosspiece member 23 is prevented from being enlarged, and the ladder main body 21 can be reduced in weight.

Further, since a non-slip surface 27A having an uneven surface is formed around the concave portion 27 of the cover member 26, the anti-slip surface 27A of the cover member 26 is brought into contact with the roof surface to thereby form the beam member 23. It does not suddenly deviate from the position where the is installed, and from this point also, the stability as a scaffold is secured, and the safety of work on the roof surface at a high place can be sufficiently secured.

Further, since a flexible wire is adopted as the connecting member 24, the ladder main body 21 formed in a rope ladder can be easily folded and unfolded, and the ladder main body can be easily handled in installation. 21 can be performed in a short time. .

The present invention is not limited to the above-described embodiment, but includes the following modifications as long as the object of the present invention can be achieved. For example,
The cross section is not limited to one having a substantially semicircular cross section, and may be a cross section having a triangular, trapezoidal, or other polygonal shape. In addition, the roof is not limited to a panel-type roof formed in a unit-type building, but also a general roof formed in a framed structure built by a conventional method of joining columns and beams at a building site. In short, the roof ladder of the present invention can be used for a roof having an inclined surface.

[0022]

As described above, according to the present invention, damage to a finished surface such as a roof surface during installation can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a building under construction according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a roof work ladder of the embodiment.

FIG. 3 is an enlarged sectional view showing a main part of the embodiment.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an exploded perspective view showing a main part of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 Ladder for roof work 23 Bar member 24 Connecting member 25 Fixing member 26 Cover member 27 Depression 27A Non-slip surface 28 Hole 33 Male screw member 35 Engaging part 38 Tip part which is a male screw part 41 Nut

Claims (5)

[Claims] 1. A plurality of bar members arranged in parallel along the inclination direction of a roof surface, a connecting member for connecting ends of these bar members to each other, and for fixing the bar member to the connecting member. A ladder for roof work having a fixing member, wherein a cover member formed of an elastic member covering the fixing member is provided, and the cover member has a recess provided on a bottom portion for housing the fixing member. And a hole provided on a side surface for storing an end of the cross member, and
A ladder for roof work, wherein the crosspiece member and the fixing member are coupled with the cover member interposed therebetween. 2. The ladder for roof work according to claim 1, wherein the crosspiece member is a tubular member having a substantially semicircular cross section. 3. The ladder for roof work according to claim 2, further comprising a male screw member having a U-shaped bent engaging portion, wherein the connecting member penetrates the cylindrical beam member, and In a state where the engaging portion of the male screw member is engaged with the coupling member inside the male screw member, the male screw portion of the male screw member penetrates the cover member and the fixing member and protrudes to the outside of the fixing member, and a nut A ladder for roof work, which is screwed into the ladder. 4. The ladder for roof work according to claim 1, wherein a non-slip surface having an uneven surface is formed around the concave portion of the cover member. A ladder for roof work. 5. The ladder for roof work according to claim 1, wherein the connecting member is a flexible wire.