JP2000145340A - Storage type gangway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make going up and down a gangway easier which is attached to a wall surface of a building for inspection purpose or the like and to store it compactly when not used. SOLUTION: This storage type gangway is equipped with a ladder portion 1 with a required length, a supporting member 2 which supports in a freely sliding manner in the longitudinal direction of the ladder portion 1 and also in a freely rotatable manner in a direction perpendicularly to a step bar 6 of the ladder 1 and is attached to an attaching position T of a building or the like, and fixing means 3 for fixing the ladder portion 1 at an arbitrary slide position, and the ladder portion 1 is slanted during the use and suspended upward during storage.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ramp installed on a wall surface of a building, and more particularly to a retractable ramp which can be used by being pulled out from an upright state to an inclined state.

[0002]

2. Description of the Related Art For example, on the roof of a school building or a condominium, there are management facilities such as water supply facilities and elevators which are formed one step higher, and these facilities are provided with a ramp for climbing and inspecting the facilities. Have been.

[0003] The ramp is generally composed of a plurality of U-shaped iron bars installed on the wall of a facility, and these iron bars are vertically arranged in a state of protruding horizontally and embedded in the wall.

[0004]

However, since the above-mentioned conventional ramp is used only for a long span of several months or one year, it is usually less than a person's height because of obstacles such as traffic. Is cut,
In use, it is necessary to use a stepladder or the like, and in addition, the iron bar vertically forms a step, so that there is inconvenience that the arm must be supported when going up and down.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has found a novel configuration in which the ramp can be tilted and accommodated so that the ramp can be easily moved up and down. It is intended to be stored in

[0006]

The present invention employs the following means to achieve the above object.

That is, as shown in FIG. 1, the retractable ramp of the present invention has a ladder portion 1 of a required length, and the ladder portion 1 is slidable in the longitudinal direction and substantially perpendicular to the tread bar 6 of the ladder portion 1. A supporting member 2 which is rotatably supported in a direction in which the ladder 1 is mounted at a mounting position T such as a building, and a fixing means 3 which fixes the ladder 1 at an arbitrary sliding position.
It is characterized by having.

In this case, the support member 2 has a hinge portion 4 between the support member 2 and the mounting position T, and the ladder portion 1 can be rotated by the hinge portion 4. It is also possible to support the side plate 11 of the ladder part 1 so as to sandwich it by a pair of rollers 12 ′ facing each other, and to slide and rotate the ladder part 1 by the rollers 12 ′.

As the fixing means 3, it is also possible to use a winch 13 with a brake for lifting the ladder 1 via a fulcrum 14 near the mounting position T, and a wheel 7 is provided at the lower end of the ladder 1. It is also possible to attach it.

In the ramp of the present invention, since the ladder portion 1 is rotatable and slidable with respect to the mounting position T by the support member 2, the lower portion of the ladder portion 1 is pulled out from the building or the like. It can be used in an inclined state, so that it is possible to go up and down on the ramp with the hand released.

Moreover, since the ladder portion 1 can be leaned against the ground, a stepladder as in the prior art is not required.

After use, the ladder 1 is set upright, slid upward and moved to a required height, and the position is fixed by the fixing means 3.
It can be stored compactly at an unobtrusive height.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
An embodiment of the present invention will be described in detail.

FIG. 1 is a side view showing a state in which a retractable tall of the embodiment of the present invention is used, FIG. 2 is a side view showing a state in which the tall of the embodiment is upright, and FIG. 3 is a tall of the embodiment. FIG. 4 is a front view of the ramp of the embodiment.

As shown in the drawings, the retractable ramp of the above embodiment has a ladder portion 1 of a required length and a support member 2 for supporting the ladder portion 1 slidably in the longitudinal direction.
A hinge part 4 for fixing the support member 2 to a mounting position T of a building or the like so as to be rotatable in a direction orthogonal to the treadle 6 of the ladder part 1 as a part of the support member 2; And fixing means 3 for fixing the position of the device 1 at an arbitrary slide position.

The ladder portion 1 is composed of a pair of side plates 5 made of a channel material having a U-shaped cross section, and a plurality of stepping rods 6 extending horizontally between the side plates. At the lower end of each of the side plates 5, wheels 7 for sliding when the ladder portion 1 is pulled out are attached, and a handrail portion 8 is attached to each of the side plates 5 respectively.

As shown in FIGS. 5 and 6, the supporting member 2 is formed so as to be inwardly engaged with the side plate 5 of the ladder portion 1 formed in a U-shape and opening outward. A pair of U-shaped support member main bodies 9 arranged to be open
And three rollers 12 provided on both side walls 10 of the support member main body 9 so as to sandwich one side wall 11 of the ladder side plate 5. The hinge part 4 is formed on the building side of the support member 2. This hinge part 4
Comprises a pair of hinges in this example, and hinges the support member 2 and the mounting position T so as to be vertically rotatable.

On the other hand, in this example, the fixing means 3 comprises a manual winch 13 fixed to the building side and the winch 1.
A rope 16 fastened to a ring 15 below the ladder 1 via two pulleys 14 formed near the mounting position T from the position 3
And The winch 13 takes the rope 16 in and out, and stops the rope 16 from being moved out by a ratchet mechanism provided inside, so that the ladder 1 can be stopped at an arbitrary sliding position.

When using the ramp of the embodiment having the above configuration, first, the winch 13 is reversely rotated from the retracted state shown in FIG. 3, and the ladder 1 is lowered to the ground as shown in FIG.

Then, while further rotating the winch 13 in the reverse direction, the ladder 1 is pulled out as shown in FIG. Ladder part 1
When the winch 13 stops the rope 16 from coming out by the ratchet mechanism, a brake is applied and the winch 13 is maintained at a constant angle.

Thus, in the retractable ramp according to the embodiment of the present invention, the ladder portion 1 includes the support member main body 9 and the hinge portion 4.
As shown in FIG. 1, the lower part of the ladder part 1 can be pulled out and separated from a building or the like, so that the ladder part 1 can be used in an inclined state. Thus, it is possible to lift and lower the ramp on the ramp with the hand released.

Moreover, as shown in FIG. 1, the ladder portion 1 can be leaned against the ground, so that a stepladder or the like as in the prior art is not required.

After the use of the ramp, the ladder 1 is set upright as shown in FIG. 2 and further slid upward to a required height as shown in FIG. It can be stored compactly at a height that does not interfere with the stop.

The embodiment of the present invention has been described above. However, the configuration in which the ladder portion 1 is rotatable and slidable is not limited to the above, and for example, a structure as shown in FIGS. .

In each of these figures, the support member main body 9 '
Is directly fixed to the mounting position T, and the pair of side walls 10 ′ are respectively opposed to the pair of side walls 10 ′ of the support member body 9 ′.
A pair of rollers 12 'is formed, and the side wall 11 of the ladder part side plate 5 on the building side is sandwiched between the rollers 12'.

That is, in this embodiment, the pair of rollers 12 'of the support member body 9' supports the ladder portion 1 so as to be slidable, and the role of a hinge portion for supporting the ladder portion 1 rotatably. Therefore, the same effects as those of the above embodiment can be obtained.

[0027]

As described above, the retractable ramp according to the present invention has a ladder portion having a required length, and the ladder portion is slidable in the longitudinal direction and is rotated in a direction substantially perpendicular to the step bar of the ladder portion. It is provided with a supporting member which is freely supported and is attached to a mounting position of a building or the like, and fixing means for fixing the position of the ladder portion at an arbitrary sliding position,
Since the ladder part is rotatable and slidable with respect to the mounting position by the support member, it is possible to use the ladder part in a state where the lower part of the ladder part is pulled out so as to be separated from a building or the like and inclined. It is possible to go up and down on the ramp with the hand released.

Further, since the ladder portion can be leaned against the ground, a stepladder as in the prior art is not required. After use, the ladder portion is erected, and is slid upward to move to the required height. By fixing the position by the fixing means, a remarkable effect of compact storage at a height that does not interfere with the position is achieved.

[Brief description of the drawings]

FIG. 1 is a side view showing a state when a retractable tarp according to an embodiment of the present invention is used.

FIG. 2 is a side view showing a state in which the ramp of the embodiment is upright.

FIG. 3 is a side view showing a state in which the ramp of the embodiment is stored.

FIG. 4 is a front view of the ramp of the embodiment.

FIG. 5 is a side view showing a support member of the ramp of the embodiment.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view showing a support member according to another embodiment of the present invention.

FIG. 8 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ladder part 2, 2 'Support member 3 Fixing means 4 Hinge part 5 Ladder part side plate 6 Ladder part tread stick 7 Wheel 8 Handrail part 9, 9' Support member main body 10, 10 'Support member main body side wall 11, 11' Ladder part Side plate side wall 12, 12 'Roller 13 Winch 14 Pulley 15 Ring 16 Rope

Claims (5)

[Claims] 1. A ladder part having a required length, and the ladder part is slidably supported in a longitudinal direction and rotatably supported in a direction substantially orthogonal to a tread rod of the ladder part, and is attached to a mounting position of a building or the like. A retractable tarp comprising: a support member; and fixing means for fixing the position of the ladder at an arbitrary sliding position. 2. The retractable tarp according to claim 1, wherein the support member has a hinge portion between the support member and an attachment position, and the ladder portion is rotated by the hinge portion. 3. The retractable tarp according to claim 1, wherein the supporting member is supported by a pair of opposed rollers so as to sandwich the side plate of the ladder, and the rollers slide and rotate the ladder. 4. The retractable tarp according to claim 1, wherein said fixing means comprises a winch with a brake for lifting a ladder portion via a fulcrum near said mounting position. 5. The retractable tarp according to claim 1, wherein a wheel is attached to a lower end of the ladder portion.