JPH07206362A - Escalator safety fence - Google Patents

Abstract

PURPOSE:To reliably prevent a man from dropping in the opening part of a manhole and to ensure safety by a method wherein a safety fence is light and easily installed and installed through simple operation without carrying the safety fence during an inspection and repair work for an elevator device. CONSTITUTION:An air bag containing chamber 14 is arranged in such a manner to surround the opening part of the floor man hole 12 of an escalator landing. An air bag 19 is contained in the containing chamber 14 formed such a manner that in a use, gas is injected in an air bag and inflated and brought into a fence-form state. When the floor manhole 12 is opened for an inspection work, gas is injected in the air bag 19 and inflated to form a safety fence.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escalator safety fence for preventing the escalator manhole from falling into the opening, especially when the equipment of the escalator is inspected or repaired, it is installed in the opening of the escalator manhole so that This relates to an escalator safety fence that prevents people from falling into the manhole by blocking entry and ensures safety.

[0002]

2. Description of the Related Art When inspecting or repairing an escalator, the manhole cover provided at the entrance / exit of the escalator is removed to enter the machine room, and an operation is made in the manhole during that time. Therefore, as a means for eliminating the risk of a person falling in this portion and performing a safe work, a method of installing a portable safety fence as shown in FIG. 7 has been conventionally used.

In FIG. 7, the floor 1 of the escalator entrance / exit
A manhole 2 as an opening is provided in the machine, and a machine room 3 is installed below the manhole 2. Around the manhole 2, a safety fence 4 formed by connecting a plurality of guard frames 4a to 4d to each other by a hinge 5 so that they can be folded (Fig. 8) is installed, and an accident such as a person falling into the manhole 2 is prevented. It is possible to prevent it and perform safe inspection and repair work. 6 is a folding part.

However, each time the manhole 2 provided in the machine room 3 is opened, the safety fence 4 must be carried from another place and installed so as to surround the manhole 2. . Then, when the work is completed and the manhole 2 is closed, the manhole 2 is folded again and carried to a predetermined place for storage. Therefore, the conventional safety fence 4 needs to be carried around and needs a dedicated storage space.

On the other hand, as a proposal for eliminating the need for the special storage space described above, for example, Japanese Utility Model Laid-Open No. 62-475.
In Japanese Patent Laid-Open No. 89, it is proposed to install a passenger entrance / exit cover as a device for preventing entry into the man conveyor. According to this proposal, the storage space problem is considerably improved, but the heavy door cover must be moved each time it is used.

[0006]

Since the conventional device is constructed as described above, it requires a dedicated storage space, and a heavy member must be moved each time it is used, which is troublesome to handle. It had a problem that it was dangerous.

An object of the present invention is to eliminate the above-mentioned problems. A escalator safety fence which is installed around a manhole in advance, does not require carrying work during use, is lightweight, easy to handle, and safe. To provide.

[0008]

In order to solve the above problems, the escalator safety fence according to the present invention is characterized by adopting an airtight bag type safety fence that can be stored under the floor.

That is, the escalator safety fence according to the present invention is provided with an airtight bag storage provided so as to surround the opening of the floor manhole of the escalator entrance / exit, and can be stored in the storage when contracted, and An airtight bag having a gas injection port and forming a fence by injecting gas from the gas injection port and inflating the gas.

Further, the airtight bag is provided with a fall-preventing means for preventing it from collapsing, and as the fall-preventing means, a pole is provided upright along the airtight bag.

Further, as another fall prevention means, a structure in which a bracing is provided on the back side of the airtight bag or a flat plate-like reinforcing material is inserted into the back side of the airtight bag is adopted.

Further, it comprises a gas compression pump, a driving means for driving the same, and an airtight container for storing the compressed gas,
The compressed gas stored in the airtight container may be sent to the airtight bag and inflated by a switch operation at the time of work.

Further, the airtight bag may be formed in a dome shape so as to cover the entire manhole when inflated.

That is, in the escalator safety fence according to the invention of claim 1 of the present application, the airtight bag storage provided so as to surround the opening of the floor manhole of the escalator entrance and exit, and the storage at the time of contraction. Can be stored, and
An airtight bag that is provided with a gas injection port and forms a fence by injecting a gas from the gas injection port to inflate the gas injection port when in use.

The escalator safety fence according to claim 2 is characterized in that the escalator safety fence according to claim 1 is provided with a fall prevention means for preventing the airtight bag from collapsing.

In the escalator safety fence according to claim 3, in the escalator safety fence according to claim 2, the fall prevention means is constituted by a pole that is erected upright along an airtight bag. .

In the escalator safety fence according to claim 4, in the escalator safety fence according to claim 2, the fall-prevention means is inserted in the braces provided on the back side of the airtight bag or on the back side of the fence. It is characterized by including a flat plate-shaped reinforcing material.

The escalator safety fence according to claim 5 is the escalator safety fence according to claim 1 or 2, further comprising an airtight container for storing compressed air, and the escalator safety fence is provided in the airtight container by an operation during work. The stored compressed air is sent to the airtight bag to inflate it.

The escalator safety fence according to claim 6 is the escalator safety fence according to claim 1, characterized in that the airtight bag is dome-shaped and has a structure that covers the entire manhole when inflated.

[0020]

With the escalator safety fence according to the present invention having the above-mentioned structure, it is possible to form the escalator safety fence extremely easily and quickly by sending gas into the airtight bag and inflating it at the start of work. it can. On the other hand, after the work is completed, the gas in the airtight bag is deflated so that the airtight bag can be contracted and easily stored in the original position.

That is, in the escalator safety fence according to the present invention, as described above, an airtight bag storage is provided so as to surround the opening of the floor manhole of the escalator entrance / exit, and the airtight bag installed in this storage is filled with gas. It forms a fence to prevent people from approaching the opening of the manhole by injecting gas from the inlet and inflating it. By fastening the airtight bag to the pole fixed to the wall of the airtight bag with a band, providing a brace on the back side of the airtight bag, or inserting a flat plate-like reinforcing material on the back side of the airtight bag, The fall of the fence can be prevented.

Further, the gas compressed by the gas compression pump is stored in an airtight container, and the compressed gas stored in the airtight container is sent into the airtight bag to inflate by operation at the time of operation, and an escalator safety fence is quickly formed when necessary. can do.

Further, if the airtight bag is dome-shaped, work can be safely carried out in this dome. In this case, the dome replaces the roof, so that not only the safety of work is ensured, but also work can be performed regardless of rain or the like. Also, because it is a dome,
Unlike the case where a simple airtight bag is used, a reinforcing material is unnecessary.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a view showing the outer appearance of an escalator safety fence according to the first embodiment of the present invention.
Is a sectional view thereof. In FIG. 1, a machine room 13 is installed below a manhole 12 provided on a floor 11 of an escalator entrance / exit. In the embodiment, an air bag storage 14 is provided in a U shape on the floor 11 around the manhole 12 at the escalator entrance / exit. Then, as shown in FIG. 2, an air bag storage 1 as an airtight bag storage.
4 is formed in the shape of a recessed groove, in which an air bag 19 as an airtight bag is housed. Lids 15, 16, and 17 for covering the air bag storage 14 are rotatably attached to the air bag storage 14, and when the air bag 19 is stored, the lids 15, 16, and 17 are closed. .

In the first embodiment, the air bag 19 stored in the air bag storage 14 bulges like a plate when the air 18 is filled therein. That is, when the air bag 19 is inflated, as shown in the sectional view of FIG. Here, in this embodiment, the lower portion of the air bag 19 is fixed to the bottom portion 14a of the air bag storage 14 via the air bag fixing portion 20. The air bag 19 has an air port 19a for injecting the air 18 and inflating it.
Is provided. Therefore, the air bag 19 can be inflated like a balloon by injecting the air 18 into the air bag 19 from the air port 19a via a foot pump or the like.

In the first embodiment, the bands 22 for fixing the air bag 19 to the pole 21 are provided at the two ends and the bent portion of the plate-shaped air bag 19 when inflated. Has been. The pole 21 is fixed to the inner wall of the air bag storage 14 by the support metal 23 and functions as a fall prevention means for preventing the air bag 19 from falling.

FIG. 3 is a perspective view showing a state in which the air bag 19 of the escalator safety fence according to the present invention is stored in the air bag storage 14, and FIG. 4 is also the lids 15, 16 and 17.
It is a principal part perspective view which shows the state which opened the air bag 19, and the state which took out the air bag 19 is shown. As shown in these drawings, the lids 15, 16 and 17 of the air bag storage 14 are installed so as to form the same plane as the surface of the floor 11 of the escalator entrance / exit. The lids 15, 16 and 17 are provided with embedded handles 24 for pulling them up. The upper portion of the manhole 12 is covered with a manhole cover 25. Further, the lids 15, 16 and 17 are fixed to the air bag storage 14 by hinges 26.

In order to use the escalator safety fence constituted by the air bag 19 as described above, first, the handle 2
4, the lids 15, 16 and 17 are respectively opened, the air bag 19 is expanded to make the air port 19a the front side, and air is fed by a gas injection means such as a foot pump (not shown). Air is sent into the air bag 19, and the air bag 19 rises upward as the air bag 19 inflates. When standing up to a certain extent, the pole 21 is fitted into the support metal 23 and stands up as shown in FIG. Next, the air bag 19 is fixed to the pole 21 via the band 22, and air is further sent to form an escalator safety fence having sufficient strength. On the other hand, to remove this escalator safety fence,
While removing air from the air bag 19, the band 22 is removed, the air bag 19 is sufficiently shrunk, and then the air bag 19 is pushed and stored in the air bag storage 14. Next, the pole 21 is pulled out and stored in the air bag storage box 14 as well.

According to the first embodiment as described above, it is possible to carry out the operation around the opening of the manhole easily and safely by simply carrying the air injecting means such as a lightweight foot pump during the work. An escalator safety fence can be formed on. Further, unlike the conventional example shown in FIG. 7, there is no need to carry a heavy safety fence, and there is no need to secure a storage space when not in use, so an extremely economical and useful escalator safety fence is obtained. be able to.

[Second Embodiment] In the first embodiment, the pole 21 is used as a fall prevention means for preventing the air bag from collapsing, but instead of this, a streak is provided on the back side of the fence formed by the air bag. A paddle may be provided, or a flat plate-like reinforcing material may be inserted into the back side of the fence (second embodiment).

[Third Embodiment] Further, the air bag 19 in the first embodiment can be made portable so as to have a self-standing structure in which even if a person falls down into the manhole, it does not fall into the manhole (third embodiment). Example).

According to the third embodiment, the pole can be eliminated and the structure can be simplified. Further, even if the user leans against the air bag and falls down, the air bag functions as a cushion and prevents the user from falling into the manhole, so high safety can be secured.

[Fourth Embodiment] A gas compression pump, a driving means for driving the same, and an airtight container for storing compressed air are provided. The stored compressed air may be instantly sent to the airtight bag to be inflated (fourth embodiment). In this case, the safety fence can be instantly formed when a danger is sensed, so that the safety can be further enhanced.

[Fifth Embodiment] FIG. 5 is a view showing a fifth embodiment of the present invention.

As shown in FIG. 5, the pole of the first embodiment is folded to be an automatic storage system, the tip of the air bag and the tip of the pole are connected, and the air bag is inflated and at the same time air enters the air bag. The pole may be completed when the air bag is completed. That is, in the fifth embodiment, the pole is provided with the bent portion 21a so that the pole can be folded. On the other hand, when the air bag is inflated, the bent portion 21a extends at the same time, and the pole is completed at the same time when the air bag is completed. In this case, the operation of inserting the pole later becomes unnecessary, and the installation work can be simplified.

Although air is used as the gas for inflating the air bladder 19 in the first to fifth embodiments, gases other than air such as nitrogen, carbon dioxide, and inert gas may be used. It is possible.

[Sixth Embodiment] FIG. 6 is a view showing a sixth embodiment of the present invention.

As shown in FIG. 6, in the first embodiment, the air bag may have a dome shape so as to cover the entire manhole when inflated. In this case, the pole can be eliminated, the structure can be simplified, and
Even if the user leans against the air bag and falls down, the risk of falling into the opening of the manhole can be eliminated. Further, in the case of an outdoor escalator, there is an advantage that it can work even in the rain.

The pneumatic escalator safety fence according to each embodiment of the present invention is not limited to the escalator shown in each of the above-mentioned embodiments, but can be used as another general safety fence.

[0041]

As described above, according to the escalator safety fence according to the present invention, it is possible to bring an air injecting means such as a lightweight foot pump to the work site without carrying a heavy safety fence from another place during work. You can easily form the escalator safety fence with easy and safe operation just by going. In addition, unlike the conventional example, it is economical and useful because there is no need to carry heavy objects around, and there is no need to separately secure a storage space when not in use.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a first embodiment of the present invention.

FIG. 2 is a sectional view of the air bag of the first embodiment of the present invention.

FIG. 3 is a perspective view showing a state where air bags are stored in the escalator safety fence of FIG.

FIG. 4 is a perspective view of an essential part showing a state in which the lid of the air bag storage is opened in FIG.

FIG. 5 is a sectional view showing the configuration of a fifth embodiment of the present invention.

FIG. 6 is a perspective view showing a configuration of a sixth exemplary embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional safety fence.

FIG. 8 is a perspective view showing a folded state of a conventional safety fence.

[Explanation of symbols]

 11 floor 12 manhole 13 machine room 14 air bag storage 15 to 17 lid 19 air bag 20 air bag fixing part 21 pole 22 band 23 support metal 24 handle 25 manhole cover 26 hinge

Claims (6)

[Claims] 1. An airtight bag storage provided so as to surround an opening of a floor manhole of an escalator entrance / exit, and a storage port that can be stored in the storage when contracted and has a gas inlet when used. An escalator safety fence characterized by including an airtight bag that forms a fence by injecting gas from a gas inlet and inflating it. 2. The escalator safety fence according to claim 1, further comprising fall prevention means for preventing the airtight bag from collapsing. 3. The escalator safety fence according to claim 2, wherein the falling prevention means is constituted by a pole that is provided upright along an airtight bag. 4. The escalator according to claim 2, wherein the falling prevention means includes a brace provided on the back side of the airtight bag or a flat plate-like reinforcing member inserted into the back side of the fence. Safety fence. 5. An airtight container for storing compressed air is provided, and the compressed air stored in the airtight container is sent to the airtight bag and inflated by an operation during operation. The escalator safety fence according to claim 1 or 2. 6. The escalator safety fence according to claim 1, wherein the airtight bag is dome-shaped and has a structure that covers the entire manhole when inflated.