KR20230032398A - A emergency ladder for an elevator hoist way - Google Patents

Abstract

The present invention relates to an emergency ladder for an elevator shaft, having a structure to lean on a wall surface or be apart from the wall surface by a simple operation. According to the present invention, in the emergency ladder installed on a wall surface of an elevator, a first fixing frame and a second fixing frame having a first hanger and a second hanger folded forward on both side ends are fixed on a wall surface by being apart from each other for a vertical interval. On the first hangers on both sides of the first fixing frame, first parting frames are respectively coupled by a hinge. On one end of the first parting frames, a first long operation hole is formed in a horizontal direction. The first hanger of the first fixing frame is coupled to the first operation hole of the first parting frame by the first hinge shaft. The other end of the first parting frame is coupled to one side of the ladder by a hinge by the second hinge shaft. The second hangers on both sides of the second fixing frame are respectively coupled to the second parting frames by a hinge. On the second hanger of the second fixing frame, a second long operation hole is formed in a vertical direction. The second operation hole of the second hanger is coupled to one end of the second parting frame by a hinge by a third hinge shaft. The other end of the second parting frame is coupled to one side of the ladder by a hinge by a fourth hinge shaft. Therefore, the emergency ladder can be used by coming in close contact with or being apart from a wall surface. The present invention provides an emergency ladder which is able to allow anyone to easily use the emergency ladder by separating it from a wall surface of an elevator shaft, and storing the ladder in close contact with the wall surface by a simple operation.

Description

An emergency ladder for an elevator hoist way}

The present invention relates to an emergency ladder for an elevator hoistway, and more particularly, to an emergency ladder for an elevator hoistway having a structure in which the emergency ladder can be leaned against or separated from a wall surface by a simple operation.

An elevator facility corresponds to a means of moving between floors by boarding passengers, vehicles, and cargo in an elevator car along a hoistway formed vertically inside a building structure.

These elevators tend to have a high risk of falling due to repeated lifting operations even with minor failures or damage to some parts, so they need to be protected by various safety devices and must be installed according to strict standards.

That is, according to the Ministry of Public Administration and Security Notice No. 2012-14, the emergency elevator is a means for firefighters trapped in the elevator car to escape on their own (that is, a self-escape means from inside the elevator car) for firefighters installed inside the elevator car at a height of 0.4m. It must be designed so that the emergency exit door can be fully opened and escaped using the appropriate footrests, etc., and the footboard installed inside the elevator car must be able to withstand a load of 1,200N. In particular, when a ladder is used as a means of self-escape from inside the elevator car, the ladder must be located in a safe place in the car and the effective horizontal distance between the ladder footrest and the vertical wall must be designed to be stored at 0.1m or more.

As shown in FIG. 1, such a ladder is generally fixed in the inspection door 12 located at the bottom of the passage 11 through which the elevator 10 ascends and descends. A maintenance worker uses a ladder 14 through the entrance 13 to perform maintenance work inside the inspection port 12 .

However, since the space between the elevator and the wall of the hoistway is narrow, it is difficult to spread and install the ladder, and it must be installed as close to the wall as possible.

Therefore, in order to solve the above problem, Korean Patent Publication No. 10-2020-0050555 provides a ladder that can be used away from the wall when using a ladder.

As shown in FIG. 2 , an installation bracket 40 having long holes vertically is fixedly installed on the inner wall of the hoistway, and the ladder 30 is hinged to the connection frame 20 . In addition, screws are hinged between the side wall connection hole 22 formed in the side wall 21 of the connection frame 20, the movable member connection hole 23, and the long hole 41 of the installation bracket 40.

Therefore, in normal times, while the screw of the connecting frame 20 coupled with the ladder 30 is located at the bottom of the long hole 41, the ladder 30 is in close contact with the wall, and the connecting frame 20 is unable to rotate. becomes

And, when you want to use the ladder 30, pull the ladder 30 to the front side while lifting. That is, when the screw of the connecting frame 20 climbs the long hole 41 and reaches the top, the ladder 30 is pulled forward, and the limit operating unit 24 of the connecting frame 20 is in the pocket of the pocket 42 It is fixed while being caught by the plate 43 and the stop jaw 44.

When the connecting frame 20 is completely rotated, the connecting frame 20 is in a horizontal state, and the ladder 30 is spaced apart from the wall by the distance of the connecting frame 20 so that the worker can use the ladder.

However, in this prior art, the limit operating unit 22, the pocket 42, the pocket plate 43, and the stopper 44 must be provided, and the connection frame 30 rotated for use is not firmly supported. There is a problem that doesn't.

Republic of Korea Patent Publication 10-2020-0050555

The present invention is a device devised to improve the conventional problems as described above, so that anyone can easily use an emergency ladder separated from the wall of the hoistway and keep the ladder in close contact with the wall surface by a simple operation. The problem to be solved is there is.

In order to solve the above problems, the present invention is an emergency ladder installed on the wall of an elevator, wherein the first and second fixing frames, in which the first and second hangers are bent forward at both ends, are spaced apart from the wall at predetermined intervals up and down. The first spacer frame is hinged to each of the first hangers on both sides of the first fixing frame, and a first operating hole of a long hole is formed in the horizontal direction at one end of the first spaced frame, and the first The first hanger of the fixed frame and the first operating hole of the first spaced frame are hinged by a first hinge shaft, and the other end of the first spaced frame is hinged by one side of the ladder and the second hinge shaft. The second spacer frames are hinged to the second hangers on both sides of the two fixed frames, and the second work hole is formed as a long hole in the vertical direction in the second hang stand of the second fix frame, and the second work hole of the second hanger and One end of the second spaced frame is hinged by a third hinge shaft, and the other end of the second spaced frame is hinged to one side of the ladder by a fourth hinge shaft, so that the emergency ladder is placed in close contact with the wall surface. It is characterized in that it is used or separated.

According to one embodiment of the present invention, a fixture bent in an 'L' shape is further coupled to the midway portion of any one of the first and second fixing frames to fix the emergency ladder in close contact with the wall surface. .

According to one embodiment of the present invention, a sensor attachment frame is coupled to the first and second spaced apart frames, and the central portion of the sensor attachment frame is bent downward to sense the operation of the elevator and control the operation of the elevator. Characterized in that a sensor attachment groove is further formed.

The present invention is an emergency ladder that has the advantage that anyone can easily use the emergency ladder away from the wall of the hoistway, and can keep the ladder in close contact with the wall by a simple operation.

1 is a view showing the installation of a hoistway ladder in a general elevator facility
2 is a view showing an installation bracket and a connecting frame of a conventional elevator emergency ladder
3 is an exemplary view showing a state in which a first fixed frame and a first spaced frame of an emergency ladder for an elevator hoistway are separated according to an embodiment of the present invention.
4 is an exemplary view showing a state in which a second fixed frame and a second spaced frame of an emergency ladder for an elevator hoistway are separated according to an embodiment of the present invention.
5 is a simplified side cross-sectional view with partial cuts in a state in which first and second spaced frames and first and second fixed frames are coupled to an emergency ladder for an elevator hoistway according to an embodiment of the present invention.
6 is a side cross-sectional view and a simplified front view of a state in which an emergency ladder for an elevator hoistway according to an embodiment of the present invention is installed spaced apart from a wall surface by first and second spacer frames;
7 is a simplified example diagram showing a state of use in a state in which an emergency ladder for an elevator hoistway according to an embodiment of the present invention is installed apart from being in close contact with a wall surface;

Specific structural or functional descriptions of the embodiments of the present invention disclosed in this specification or application are merely exemplified for the purpose of explaining the embodiments according to the present invention, and the embodiments according to the present invention may be implemented in various forms. and should not be construed as being limited to the embodiments described in this specification or application.

Embodiments according to the present invention can apply various changes and can have various forms, so specific embodiments are illustrated in the drawings and described in detail in this specification or application. However, this is not intended to limit the embodiments according to the concept of the present invention to a specific disclosed form, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The above terms are only for the purpose of distinguishing one component from another component, e.g., without departing from the scope of rights according to the concept of the present invention, a first component may be termed a second component, and similarly The second component may also be referred to as the first component.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this specification, it should not be interpreted in an ideal or excessively formal meaning. don't

Referring to FIGS. 3 to 7, the emergency ladder 100 of the present invention is installed on the wall of the hoistway of the elevator and used in case of emergency. It is folded on the wall at normal times and unfolded when you want to use it. .

To this end, the first and second fixing frames 200 and 210 for fixing the emergency ladder 100 are firmly fixed and installed on the wall surface at a predetermined interval up and down, and the emergency ladder 100 and the first, The first and second spaced apart frames 300 and 310 are coupled between the two fixed frames 200 and 210.

Here, as shown in FIGS. 3 and 4, the first and second fixing frames 200 and 210 have both ends bent in the forward direction to form first and second hangers 202 and 212, so that the overall 'c' It is formed in the shape of a '.

Here, in the first and second spaced frames 300 and 310, the long first and second vertical stands 302 and 312 and the first and second horizontal supports 304 and 314 form an 'b' shape, is formed

In addition, at one end of the first upright stand 302 of the first spaced frame 300, a first operating hole 306, which is a long hole in the horizontal direction parallel to the first upright stand 302, is formed through, The operating hole 306 and the first support 202 of the first fixing frame 200 are hinged by a first hinge shaft 204. In addition, the other end of the first spaced frame 300 is hinged to one side of the ladder 100 by the second hinge shaft 102.

In addition, a second operating hole 216, which is a long hole in the vertical direction, is formed through the second hanger 212 of the second fixing frame 210, and the second operating hole 216 and the second separation frame 310 One end of is hinged by the third hinge shaft 214. In addition, the other end of the second spaced frame 310 is hinged to one side of the ladder 100 by a fourth hinge shaft 104.

On the other hand, a fixture 220 for fixing the ladder 100 in close contact with the wall surface may be further provided at the midway portion of any one of the first and second fixing frames 200 and 210. The fixture 220 is preferably bent in a 'b' shape in the front direction from the wall surface.

In addition, both ends of the first and second spaced frames 300 and 310 in contact with the first and second fixed frames 200 and 210 and the ladder 100 have rounded corners 308 ( 318) can be formed.

In addition, a sensor attachment frame 400 may be further coupled between the first and second horizontal supports 304 and 314 on both sides of the first and second spaced apart frames 300 and 310 . In addition, a central portion of the sensor attachment frame 400 may be bent downward to facilitate attachment of the sensor to form a sensor attachment groove 410 . This is to detect the operation of the elevator, and when the ladder 100 is unfolded, a sensor for controlling the operation of the elevator is attached.

In the present invention configured as described above, as shown in FIGS. 6 and 7 (a) during normal operation of the elevator, the ladder 100 includes the first and second spaced frames 300, 310 and the first, 2 is rotated around the fixed frames 200 and 210, the first hinge axis 204, the second hinge axis 102, the third hinge axis 214, and the fourth hinge axis 104 so as to be perpendicular to the wall surface. located in close proximity to

At this time, when the first spaced frame 300 is erected close to vertical while being rotated by the first hinge axis 204 and the second hinge axis 102, the first upright stand 302 is also erected close to vertical and is placed on the wall surface. In close contact, the first hinge shaft 204 is located on the upper side of the first operating hole 306 where the first upright stand 302 of the first spacer frame 300 is located in a vertical state, and the first spacer frame 300 is in a vertical state. (300) becomes impossible to rotate.

In addition, the second spacer frame 300 is erected close to vertical together with the first spacer frame 300 while being rotated by the third hinge axis 214 and the fourth hinge axis 104, and the second upright stand 312 ) is also erected close to vertical, making it closely contact with the wall. At this time, while the third hinge shaft 214 rises in the second operating hole 216 formed as a long hole perpendicular to the second fixed frame 210, the second spacer frame 310 is erected close to the wall surface vertically. The second spaced apart frame 310 is unable to rotate.

In addition, as the first and second spaced frames 300 and 310 are rotated and erected close to vertical, the ladder 100 is also placed in close contact with the wall surface, and the ladder 100 descends by a predetermined interval. While being caught on the fixture 220, the ladder 100 is suddenly separated from the wall surface, so there is no concern about safety accidents.

In addition, when a worker or the like intends to use the ladder 100 for work in the hoistway, the ladder 100 is held and slightly lifted upward. As the ladder 100 rises, it is separated from the fixture 220 and becomes free.

In addition, as the ladder 100 rises, the first and second spaced frames 300 and 310 also rise. It moves to the lower side of 306, and the first spacer frame 300 can be rotated without being caught on the wall surface.

In addition, while the second hinge shaft 102 moves upward of the second operating hole 216 formed in the second fixing frame 210, the second spacer frame 310 also rotates without being caught on the wall surface.

Therefore, when the first and second spaced frames 300 and 310 are rotated in a horizontal state, the ladder 100 is spaced from the wall surface by the length of the first and second spaced frames 300 and 310, as shown in FIG. 7 (b). As shown in ), it is erected in contact with the floor in a vertical state.

Therefore, the operator can go up and down using the ladder 100 to work. In addition, when the elevator is operated due to malfunction during work, the sensor attached to the sensor attachment groove 420 detects this and controls the operation of the elevator to stop the operation.

When the work is finished, when the ladder 100 is slightly lifted again, the first and second spaced frames 300 and 310 are respectively the first hinge axis 204, the second hinge axis 102, and the third hinge axis 214 ) and the fourth hinge shaft 104, the angle with the wall surface is narrowed.

And, while the first spacer frame 300 rotates, the first actuating hole 306 descends from the first hinge shaft 204 so that the first upright stand 302 of the first spacer frame 300 comes into close contact with the wall surface. do. In addition, while the second spacer frame 310 also rotates, the third hinge shaft 214 moves to the lower side of the second operating hole 216, and the second upright stand 312 comes into close contact with the wall surface.

Therefore, the ladder 100 is in close contact with the wall surface as shown in (a) of FIG. 7 and does not interfere with the operation of the elevator at all.

In addition, when a problem occurs in the operation of the ladder 100 even though the elevator is operating and is in an unfolded state, a sensor attached to the sensor attachment groove 410 of the sensor attachment frame 400 of the ladder 100 detects the operation of the elevator. This causes the elevator to stop working.

100: ladder 102,104: second, fourth hinge axis
200,210: first and second fixed frames 202, 212: first and second hanging bars
204,214: 1st, 3rd hinge axis 216: 2nd operating hole
220: fixture
300,310: first and second spaced frames 302,312: first and second vertical bands
304,314: first and second horizontal supports 306: first operating hole
400: sensor attachment frame 410: sensor attachment groove

Claims (3)

In the emergency ladder installed on the wall of the elevator,
At both ends, the first and second fixing frames, in which the first and second hangers are bent forward, are fixedly installed on the wall at a predetermined interval up and down,
A first spacer frame is hinged to each of the first hangers on both sides of the first fixing frame,
A long first operating hole is formed in the horizontal direction at one end of the first spaced frame,
The first hanger of the first fixing frame and the first operating hole of the first spacing frame are hinged by a first hinge shaft, and the other end of the first spacing frame is hinged by one side of the ladder and the second hinge shaft, ,
Second spacer frames are hinged to the second hangers on both sides of the second fixing frame, respectively,
A second operating hole is formed as a long hole in the vertical direction at the second hanger of the second fixing frame,
The second operating hole of the second hanger and one end of the second spacer frame are hinged by a third hinge shaft, and the other end of the second spacer frame is hinged by one side of the ladder and a fourth hinge shaft,
An emergency ladder for an elevator hoistway, characterized in that the emergency ladder is used in close contact with the wall or spaced apart.
According to claim 1,
An emergency ladder for an elevator hoistway, characterized in that a fixture bent in an 'L' shape is further coupled to the midway portion of any one of the first and second fixing frames to fix the emergency ladder in close contact with the wall surface.
According to claim 1,
A sensor attachment frame is coupled to the first and second spaced apart frames, and a center portion of the sensor attachment frame is bent downward to detect the operation of the elevator and further form a sensor attachment groove for controlling the operation of the elevator. An emergency ladder for an elevator hoistway.

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