JP3911199B2 - Wall mounting ladder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wall surface mounting ladder, and more particularly to a wall surface mounting ladder fixed to a wall surface of concrete or the like via an anchor bolt or the like.
[0002]
[Prior art]
FIG. 6 is an overall perspective view of a wall mounting ladder to which a conventional auxiliary ladder is connected, and FIG. 7 is an enlarged sectional view of the VII-VII line shown in FIG.
[0003]
Referring to these drawings, the wall surface mounting ladder 41 spans a pair of side columns 53a and 53b arranged in parallel and a plurality of them at equal intervals perpendicular to the axial direction of the side columns 53a and 53b. Step members 52a to 52d. The side columns 53a and 53b have a rectangular column shape with a hollow inside, and long holes 54a to 54f (some not shown) are provided in a line in the axial direction on the surface that contacts the wall surface. Yes. Further, through holes 50a to 50f are provided at positions facing the long holes 54a to 54f on the surface facing this surface. Further, the step members 52a to 52d are attached by welding to the surfaces where the pair of side columns 53a and 53b face each other.
[0004]
In order to assist the wall mounting ladder 41, the auxiliary ladder 3 is connected to the lower part thereof. The auxiliary ladder 3 has a pair of side pillars 21a and 21b arranged in parallel with substantially the same width as the side pillars 53a and 53b of the wall-mounting ladder 1, and equidistant from the side pillars 21a and 21b. A plurality of step members 22a to 22d that are stretched over each other. The side columns 21a and 21b have a rectangular column shape, and plate-like connecting plates 23a and 23b (not shown) provided with elongated holes 25a and 25b (not shown) near the center at upper ends thereof. )).
[0005]
Here, the attachment of the wall mounting ladder 1 and the connection of the auxiliary ladder 3 will be described. The wall surface 55 to which the ladder is attached is usually made of concrete and is smooth and vertically erected. First, anchor bolts 10a to 10f (partially not shown) are embedded at predetermined positions on the wall surface 55. The anchor bolts 10a to 10f (not shown in part) have male threads formed at portions protruding from the wall surface 55. Next, the protruding portions of the anchor bolts 10a to 10f (some are not shown) are passed through the long holes 54a to 54f (some are not shown) of the side pillars 53a and 53b, and the wall mounting ladder 1 is hooked. Next, after passing washers 11a-11d (partially not shown) through anchor bolts 10a-10d (partially not shown), nuts 12a-12d (partially not shown) are screwed together, and through holes 50a- Insert a wrench from 50f and tighten firmly.
[0006]
Here, the long holes 54e and 54f (not shown) positioned at the lowermost positions of the side pillars 53a and 53b are specially attached to connect the auxiliary ladder 3. With respect to this portion, after anchor bolts 10e and 10f (not shown) are passed through the long holes 54e and 54f (not shown) of the side pillars 53a and 53b, connection plates 23a and 23b (see FIG. It passes through long holes 25a and 25b (not shown). Then, after passing washers 11e and 11f (not shown), nuts 12e and 12f (not shown) are screwed together and firmly tightened with a wrench or the like.
[0007]
[Problems to be solved by the invention]
As described above, the anchor bolt is normally embedded in the wall surface in accordance with the width of the wall surface mounting ladder.
[0008]
However, wall mounting ladders are mostly installed outdoors, especially when installed on the coast, etc., and the wall ladders are often replaced. At this time, the portion of the anchor bolt that protrudes to the outside is likely to deteriorate. When replacing such an aged wall mounting ladder, it is not possible to use the anchor bolt that has been previously driven, and it is also difficult to drive a new anchor bolt at that position. In that case, the mounting position of the wall surface mounting ladder is slightly shifted, but the position of the wall surface mounting ladder is shifted from the place where it was previously installed. In view of this, it is conceivable to install by changing the width between the side columns. In that case, it is necessary to cut the length of each step member in accordance with the width, or to attach and extend a new member. In that case, you have to prepare the auxiliary ladder according to the width.
[0009]
The present invention has been made to solve the above-described problems, and provides a wall mounting ladder that can be easily mounted without changing the position of the step member when replacing the wall mounting ladder. Objective.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a wall surface mounting ladder that is attached to a wall surface via a bolt, and a cross section in a direction perpendicular to the axial direction thereof is a standing leg portion. A pair of side columns arranged in parallel to each other, and each end surface of the standing leg portion are spanned in a direction perpendicular to the axial direction and removed. A step member that is freely attached and a bolt attachment means for attaching a bolt formed on each of the fixed portions are provided, and the cross section has an inverted T-shape in the vicinity of at least the end portion of each side column. The connecting plate is attached as described above, and the connecting plate is formed with auxiliary ladder attaching means for attaching the auxiliary ladder at a position where the distance from the standing leg portion is the same as the distance from the standing leg portion to the bolt attaching means. Is.
[0011]
If comprised in this way, each side column and each step member can be disassembled | assembled freely and can be assembled, and the arrangement | positioning of the left and right of the side column arrange | positioned in parallel at that time can be replaced. By exchanging the side columns in this way, the width between the bolt mounting means of the pair of side columns can be changed. Further, when the left and right arrangements of the side pillars are interchanged, the position of the bolt attaching means and the position of the auxiliary ladder attaching means of the side pillars that are paired with each other are interchanged. That is, the auxiliary ladder mounting means is located at the place where the bolt attaching means is located before the side pillar is replaced, and the bolt attaching means is located where the auxiliary ladder attaching means is located before the side pillar is exchanged.
[0014]
According to a second aspect of the present invention, in the configuration of the first aspect of the invention, the bolt mounting means is a through hole, and the auxiliary ladder mounting means is a hole in which a female screw is formed.
[0015]
If comprised in this way, a volt | bolt can be let to pass through a through-hole and a screw can be screwed in the hole in which the internal thread was formed.
[0018]
【The invention's effect】
As described above, the invention according to claim 1 can change the position of the bolt mounting means of the pair of side pillars without changing the width of the step member by changing the left and right arrangement of the side pillars. it can. Therefore, since the position of the bolt mounting means can be selected according to the condition of the wall surface without changing the position of the step member, it is easy to use. Moreover, even when the left and right arrangements of the side pillars are switched, the bolt mounting means or the auxiliary ladder mounting means is always located at the mounting position of the auxiliary ladder. Therefore, it can connect, without changing the width | variety of the side pillar of an auxiliary ladder.
[0020]
In addition to the effect of the invention of claim 1, the invention according to claim 2 is capable of passing the bolt because the bolt mounting means is a through hole, and can be firmly fixed by tightening with the bolt and nut. it can. Further, since the auxiliary ladder attaching means is a hole in which a female screw is formed, the auxiliary ladder can be screwed. In this case, since there is no thing which protrudes in the surface which contact | abuts a wall surface in a connection board, it does not influence when the wall surface mounting ladder is attached to a wall surface.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an overall perspective view showing a mounting state of a wall surface mounting ladder according to the first embodiment of the present invention. FIG. 2 is a perspective view of the step mounting member after removing the wall surface mounting ladder of FIG. FIG. 3 is a perspective view corresponding to FIG. 1, and is a perspective view in which the left and right sides of the side pillars are interchanged.
[0023]
Referring to these drawings, a wall mounting ladder 1 has a pair of side pillars 6a and 6b arranged in parallel and a plurality of ladders 1 extending at equal intervals perpendicular to the axial direction of the side pillars 6a and 6b. Step members 14a to 14d. The side columns 6a and 6b are joined to each other so that the cross section of the surface perpendicular to the axial direction is L-shaped.
[0024]
One plate of the L-shaped side pillars 6a and 6b is a fixed plate 7a and 7b serving as a fixed portion and is fixed in contact with the wall surface. The other plate is the stance plate 8a, 8b which becomes the stance portion, and the step members 14a to 14d are attached to the end surfaces thereof. The fixing plates 7a and 7b are provided with long holes 9a to 9f (partially not shown) which are through holes formed in a line in the axial direction of the side pillars 6a and 6b. Further, the standing plates 8a and 8b are provided with notches 13a to 13h on the end surface opposite to the surface coupled to the fixing plates 7a and 7b, and the notches 13a to 13h are connected to the fixing plates 7a and 7b. A screw hole (not shown) is formed toward the joint surface.
[0025]
In this way, when the long holes 9a to 9f (not shown in part) serving as bolt mounting positions and the notches 13a to 13h to which the step members are mounted are formed, the long holes serving as bolt mounting means as shown in FIG. The position B when the positions 9a to 9f (not shown) are projected onto the wall surface 55 and the position A when the mounting position of the step member is projected onto the wall surface 55 are the axial directions of the side columns 6a and 6b ( It is separated by a predetermined distance L with respect to a direction (Y direction) orthogonal to the (X direction).
[0026]
In order to obtain the wall mounting ladder 1 shown in FIG. 1, the two side pillars 6a and 6b are faced in parallel so that the fixing plates 7a and 7b are on the outside. The step members 14a to 14d are fitted into the notches 13a to 13h and fixed by screws 15a to 15h so as to span the side columns 6a and 6b.
[0027]
The wall surface mounting ladder 1 in this state is mounted on the concrete wall surface in the same manner as the conventional wall surface mounting ladder 41 (see FIG. 6). That is, the anchor bolt 10a embedded at a predetermined position on the wall surface is passed through the long hole 9a. Thereafter, the nut 12a is screwed through the washer 11a and tightened firmly. The other long holes 9b to 9f are attached in the same manner.
[0028]
The case where the wall mounting ladder 1 attached to the wall surface with the fixing plates 7a and 7b facing outward between the pair of side columns 6a and 6b is replaced with a new wall mounting ladder 1 having the same structure, for example, will be described. To do. The step members 14a to 14d of the newly installed wall surface mounting ladder 1 are removed from the standing plates 8a and 8b, and the left and right sides of the side pillars 6a and 6b are replaced. As a result, the fixing plates 7a and 7b face inward between the side columns 6a and 6b. Thereafter, the step members 14a to 14d are attached to the standing leg portions 8a and 8b. At this time, it is not necessary to change the length of the step members 14a to 14d. In addition, after removing step member 14a-14d from the leg parts 8a and 8b, you may replace the upper and lower sides, without replacing the right and left of the side pillars 6a and 6b. Thus, even if the upper and lower sides of the side pillars 6a and 6b are exchanged, the fixing plates 7a and 7b are in a state of facing the inner side between the side pillars 6a and 6b.
[0029]
Here, the wall-mounting ladder 1 that has been previously mounted is removed from the wall surface. At this time, anchor bolts 10a to 10f (partially not shown) that have been used in the wall remain in parallel in two rows in the vertical direction. Between the arrangement of the anchor bolts 10a to 10f (some are not shown), a new wall mounting ladder 1 in which the fixing plates 7a and 7b are directed to the inside between the side pillars 6a and 6b is temporarily arranged. . When the wall mounting ladder 1 is arranged in this way, the long holes 9a to 9f (partially not shown) provided in the fixing plates 7a and 7b are anchor bolts 10a to 10f (partially shown) that have been used before. (Not shown). New anchor bolts 18a to 18f (partially not shown) may be driven into that position.
[0030]
Thereafter, new anchor bolts 18a to 18f are passed through the long holes 9a to 9f (partially not shown) of the fixing plates 7a and 7b. Then, the washers 11a to 11f (partially not shown) are passed through and the nuts 12a to 12f (partially not shown) are screwed and tightened firmly. When the anchor bolts 18a to 18f (not shown in part) are aged before the wall mounting ladder 1, the side pillar 6a of the wall fixing ladder 1 removed instead of the new wall mounting ladder 1 is used. , 6b may be used interchangeably.
[0031]
As described above, the wall-mounting ladder 1 having the same structure can be arranged between the anchor bolts 10a to 10f (not shown) that have been used before, and new anchor bolts 18a to 18f ( Some (not shown) can also be driven into new locations. At this time, the positions of the step members 14a to 14d of the newly mounted wall surface mounting ladder 1 are not moved from the positions before the replacement, and therefore, there is no possibility that the usability is lowered. It is to be noted that the anchor bolts 10a to 10f (partially not shown) that have been used before actual use are preferably cut at the protruding portion for safety. Further, the wall surface mounting ladder 1 in which the fixing plates 7a and 7b are directed to the inner side between the side columns 6a and 6b from the wall surface mounting ladder 1 in the state in which the fixing plates 7a and 7b are directed to the outer side between the side columns 6a and 6b. First, after using the wall mounting ladder 1 with the fixing plates 7a and 7b facing the inside between the side columns 6a and 6b, the fixing plates 7a and 7b are moved to the outside between the side columns 6a and 6b. You may replace with the wall-mounting ladder 1 of the state which faced.
[0032]
FIG. 4 is a perspective view showing an attachment state in which an auxiliary ladder is connected to a wall surface attachment ladder according to a second embodiment of the present invention, and FIG. 5 is a view corresponding to FIG. FIG.
[0033]
The wall mounting ladder according to the second embodiment of the present invention is basically the same as the first embodiment, and therefore the differences will be mainly described.
[0034]
Referring to these drawings, connecting plates 16a and 16b are provided in the vicinity of the lower ends of the side columns 6a and 6b on the opposite side of the fixed plates 7a and 7b with the standing legs 8a and 8b interposed therebetween. The section where the connecting plates 16a and 16b are joined has a T-shaped cross section in a plane perpendicular to the axial direction of the side columns 6a and 6b. The connecting plates 16a and 16b are provided with screw holes 17a (not shown) at positions symmetrical with respect to the long holes 9a to 9f (not shown) provided on the fixing plates 7a and 7b and the standing plates 8a and 8b. 1), 17b. That is, the distance from the standing plates 8a and 8b to the long holes 9a to 9f (partially not shown) and the distance from the standing plates 8a and 8b to the screw holes 17a (not shown) and 17b are the same.
[0035]
With reference to FIG. 4, a method for attaching the wall surface mounting ladder 1 with the fixing plates 7a and 7b facing outward between the side columns 6a and 6b to the wall surface and further connecting the auxiliary ladder 3 will be described.
[0036]
The mounting method for mounting the wall surface mounting ladder 1 to the wall surface is substantially the same as in the first embodiment. That is, the anchor bolt 10a is passed through the long hole 9a. Thereafter, the nut 12a is screwed through the washer 11a and firmly fixed. The same applies to the long holes 9b to 9d. The difference is that before the washer 11e, 11f (not shown) is passed through the anchor bolts 10e, 10f (not shown) located at the lowermost side of the side pillars 6a, 6b, the auxiliary ladder 3 is attached. The anchor bolts 10e and 10f (not shown) are passed through the long holes 25a and 25b (not shown) of the connecting portions 23a and 23b (not shown) provided. Thereafter, the nuts 12e and 12f (not shown) are screwed through the washers 11e and 11f (not shown) and tightened firmly. Thus, the wall mounting ladder 1 and the wall surface are fixed by the anchor bolts 10e and 10f (not shown), and the wall mounting ladder 1 and the auxiliary ladder 3 are connected.
[0037]
Next, with reference to FIG. 5, the case where it replaces with the new wall-mounted ladder 1 of the same structure is demonstrated. The method of removing the wall mounting ladder 1 from the wall surface is substantially the same as that described in the first embodiment. The difference is that the anchor bolts 10a to 10f (partially not shown) that have been used before are placed after the wall-mounting ladder 1 that has been used before is removed and before the new wall-mounting ladder 1 is placed. Cut the protruding part. Otherwise, at least the protrusions of the anchor bolts 10e and 10f (not shown) will contact the connection plates 16a and 16b whose positions have changed.
[0038]
As in the first embodiment, the side columns 6a and 6b are arranged so as to face the inside between the side columns 6a and 6b in which the fixing plates 7a and 7b are paired. With this arrangement, the connecting plates 16a and 16b face outward and the fixing plates 7a and 7b face outward, and the screws have the same width as that between the long holes 9e and 9f of the pair of side columns 6a and 6b. Holes 17a (not shown) and 17b are arranged. The wall mounting ladder 1 in this state is mounted on the wall surface.
[0039]
Further, after the wall mounting ladder 1 is mounted on the wall surface, the long holes 25a and 25b of the auxiliary ladder are aligned on the screw holes 17a (not shown) and 17b of the connecting plates 16a and 16b, and washers 26a and 26b (see FIG. Screws 24a and 24b (not shown) passed through (not shown) are screwed and firmly fixed. Thus, even when the left and right sides of the side pillars 6a and 6b are exchanged, the long holes 25a and 25b, which are the mounting positions of the auxiliary ladder 3, are always inserted into the long holes 9e (not shown) and 9f of the fixing plate fixing plates 7a and 7b. Or screw holes 17a, 17b. Therefore, it is not necessary to newly prepare an auxiliary ladder having a different width.
[Brief description of the drawings]
FIG. 1 is an overall perspective view of a wall mounting ladder according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a part of a step member of the wall surface mounting ladder shown in FIG. 1 in an exploded state.
FIG. 3 is a perspective view corresponding to FIG. 1 with the left and right side columns of the wall mounting ladder replaced.
FIG. 4 is a perspective view of an auxiliary ladder connected to a wall mounting ladder according to a second embodiment of the present invention.
FIG. 5 is a perspective view corresponding to FIG. 4 in which the left and right side pillars are interchanged.
FIG. 6 is an overall perspective view of a conventional wall mounting ladder to which auxiliary ladders are connected.
7 is an enlarged sectional view taken along line VII-VII shown in FIG.
[Explanation of symbols]
6 ... side pillar 7 ... fixing plate 8 ... stand plate 9 ... long hole 10 ... anchor bolt 14 ... step member 16 ... connecting plate 17 ... screw hole 18 ... anchor bolt In addition, the same code | symbol shows the same or an equivalent part in each figure .

Claims (2)

A wall mounting ladder that is attached to a wall surface via a bolt,
A cross-section in a direction perpendicular to the axial direction has an L-shape consisting of a standing leg part and a fixed part, and a pair of side columns arranged in parallel to each other;
A step member spanned in a direction orthogonal to the axial direction and attached to each end face of the standing leg portion in a detachable manner;
A bolt mounting means for mounting the bolt, formed on each of the fixed portions;
A connection plate is attached in the vicinity of at least the end of each of the side pillars so that the cross-section has an inverted T shape,
The connecting plate is provided with auxiliary ladder attaching means for attaching an auxiliary ladder at a position where the distance from the standing leg to the bolt attaching means is the same as the distance from the standing leg to the bolt attaching means. ladder. The bolt mounting means is
Including through holes,
The auxiliary ladder attaching means is
The wall surface mounting ladder according to claim 1, comprising a hole in which an internal thread is formed.

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