JPH0726863A - Ladder with moving hook - Google Patents

Abstract

PURPOSE:To facilitate vertical slide operation of a hook from a ground. CONSTITUTION:Hooks 4 are attached to the top part of a long ladder 1, comprising stays 2 and tread beams 3, so that it is vertically slidable along a stay 2. A rope 8 for operation is tied to the hook 4. Further, the operation rope 8 has a tip guided through a top pulley 10 arranged to the top part of the long ladder 1 to the lower part of the long ladder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladder having a hook slidably attached to the top thereof, and more particularly to a ladder with a hook which can be operated to move up and down on the ground surface.

[0002]

2. Description of the Related Art Among conventional long ladders that are used by standing against the waist wall of a balcony of a building, there are long ladders with hooks that can be hooked on the upper edge of the waist wall of the balcony. Is also known. However, this long ladder with hook cannot be fixed at a position where the hook is fixed to the ladder unless the height from the ladder installation location to the object on which the hook is hung is known. There was a problem that the hook fixing position had to be corrected. Also, in the case of a long ladder, it is difficult to check whether the hook is hanging on the target object such as the upper edge of the waist wall even when looking up from below. Then there was a risk of climbing the ladder.

Recently, for example, the actual Kaihei 4-1.
As shown in Japanese Patent No. 16600, a technique of a ladder in which a hook is slidably attached to the top of a ladder main body has been developed. This known technique is a technique used as a ladder for an up-and-down lifting bed whose height is not constant, and is a ladder having a hooked metal fitting whose height can be freely adjusted is attached to the top.

[0004]

However, the ladder having the hook fitting slidably attached to the top thereof is a ladder having an extremely short height. Therefore, when the ladder is used for an up-and-down lifting bed, etc. Although it is possible for a person to manually slide and position the position of the hook-equipped metal fitting while leaning against the object, in the case of a long ladder used in a building as in the present invention, The above technology could not be used as it was. Therefore, even if the hook is slidably mounted on the top of the ladder, various problems similar to those of the fixed hook ladder have occurred.

The hook ladder according to the present invention is a technique developed in view of the above-mentioned conventional problems, and in particular, the hook is slidably attached to the top of the column of the ladder body,
It provides a completely new technology that allows the vertical position of this hook to be adjusted freely on the ground.

[0006]

A ladder with a movable hook according to the present invention is a technique which has fundamentally improved the above-mentioned conventional problems, and the gist thereof is a ladder provided with a hook on the top. A hook with a movable hook is characterized in that the hook is slidably attached along both columns of the ladder body, and the sliding means of the hook is operated on the ground by a rope.

[0007]

As described above, the ladder with hooks according to the present invention allows the hooks to be slidably mounted along the columns on both sides of the ladder body, and the vertical sliding of the hooks to be operated by a rope along the ground. Since it is configured to, the hook is slid up and down along the pillar by operating the rope on the ground after putting the long ladder on the building etc. The hook can be securely hooked. Also, when the ladder is removed, the hook can be lifted and easily removed from the object by operating the rope.

[0008]

1 is a front view of a ladder according to the present invention, FIG. 2A is a side view of the ladder shown in FIG. 1, and FIG. 2 (B),
FIG. 3C is an explanatory view showing a hook mounting state, and FIG. 3 is a perspective explanatory view of a main part of a ladder of another example.

In FIGS. 1 and 2 (A), (B), and (C), reference numeral 1 is a long ladder according to the present invention, in which a plurality of treads 3 are attached to columns 2 on both sides. It is composed by. Reference numeral 4 denotes a hook, which is provided with two mounting brackets 5 projectingly provided on the back surface thereof at a predetermined interval and a screw 7 which can be inserted into a hole 6 of these mounting brackets 5 to support the columns 2 on both sides. It is attached so that it can slide vertically. A curing rubber 3 is provided on the upper surface of the tread 3 and the inner surface of the hook 4, respectively.
a and 4a are stacked.

The ends of the operating rope 8 and the elastic cord 9 are tightly connected to the upper and lower portions of the one fitting 5 of the hook 4, respectively. Further, the left and right operation ropes 8 attached to the attachment fittings 5 are passed through top pulleys 10 attached to both sides of the top of the long ladder 1, and then both of them are integrally connected to each other. Moreover, the tip end of the operating rope 8 is guided to and suspended from the lower part of the long ladder 1. On the other hand, the tip of the stretchable cord 9 attached to the mounting member 5 is guided below the long ladder 1, and the tip thereof is tightly connected to the tread 3 at a predetermined position. The tip of the elastic string 9 may be tightly attached to an appropriate position of the column 2.

Therefore, the hook 4 is vertically slidably attached to the columns 2 on both sides, and the hook 4 is always attached downward by the action of the elastic cord 9 tightly connected to the fitting 5 of the hook 4. It is energized. In addition, the operation rope 8 tightly connected to the fitting 5 of the hook 4 is the top pulley 1
Since the tip of the operation rope 8 is guided to the lower part of the long ladder 1 through 0, pulling the operation rope 8 on the ground resists the attractive force of the elastic string 9 to support the hooks 4 on both sides, respectively. It is constructed so that it can be raised along 2.

Since the ladder according to the present invention has the structure as described above, when it is used, for example, when tilting the long ladder 1 stretched for the veranda waist wall (not shown) of the second floor of the building, At this point, by pulling by holding the tip of the operating rope 8, the hook 4 is raised along the support column 2 to a predetermined position higher than the upper edge of the waist wall of the veranda,
After that, while the long ladder 1 is brought into contact with the waist wall of the veranda, the operation rope is released, so that the hook 4 is lowered by the tensile action of the elastic string 9, and the hook 4 is securely attached to the upper edge of the waist wall of the veranda. It can be hung on. Hook 4
It can be easily checked on the ground whether or not it hung on the waist wall of the balcony by pulling the long ladder 1.

Although the hook 4 is pulled down by the tension of the elastic cord 9 in the above-mentioned embodiment, when the hook 4 can descend along the column 2 by its own weight, the elastic cord 9 can be lowered. Can be omitted altogether. Also, this elastic string 9
Can be made of a spring material such as a spring material.

Further, in the above-described embodiment, the mounting member 5 is provided on the back surface of the hook 4 so that the hook 4 is slidably mounted on the column 2 via the mounting member 5 and the screw 7. However, a structure as shown in FIG. 3 is also possible. That is, in FIG. 3, 11 is a C-channel type guide rail, and the guide rail 1 is provided on the back surface of the hook 4.
A bracket 12 is provided so as to be able to move up and down along with 1. Therefore, the guide rails 11 are attached to the back surfaces of the columns 2 on both sides, and the brackets 1 are installed in the guide rails 11.
By inserting 2 slidably, the hook 4 can be moved up and down along the column 2. In the case of this embodiment, since the mounting portion of the hook 4 is not obstructed by the treads 3, the moving distance of the hook 4 can be lengthened.

[0015]

Since the ladder with hooks according to the present invention has the above-described structure and operation, it has the following great effects.

(1) Since the hook can be slid, it is not necessary to accurately grasp the distance from the installation surface to the object. (2) Therefore, it is not necessary to tilt the ladder many times in the field to correct the fixed position of the hook. (3) The hook can be attached to and detached from the object on the ground, which is safe and efficient. (4) Since the hook is always urged downward by its own weight or the tension of the elastic material, the hook can be securely hooked on the object. (5) The overall structure is simple and the operation of the hook is easy.

[Brief description of drawings]

FIG. 1 is a front view of a ladder according to the present invention.

FIG. 2 is a side view of the ladder shown in FIG. 1 and an explanatory view showing a hook mounting state.

FIG. 3 is a perspective explanatory view of a main part of a ladder of another example.

[Explanation of symbols]

1 Long Ladder 2 Struts 3 Strands 4 Hooks 3a, 4a Curing Rubber 5 Mounting Brackets 6 Holes 7 Screws 8 Operating Rope 9 Elastic String 10 Top Pulley 11 Guide Rail 12 Bracket

Claims (1)

[Claims] 1. A ladder having hooks on its top, wherein the hooks are slidably mounted along both columns of the ladder body, and the sliding means of the hooks is operated on the ground by a rope. A ladder with a movable hook that is characterized.