KR20200001223U - Ladder - Google Patents

Abstract

Ladders are introduced that enable safe operation even at high positions.
The ladder includes a pair of first frames arranged parallel to each other, a first support bar connecting the pair of first frames, and a pair of rotationally connected first pairs of frames and arranged parallel to each other. A second frame, a second support bar connecting the pair of second frames, and a pair of first frames and a pair of second frames may include an electromagnet unit provided on at least one of the lower ends.

Description

Ladder {LADDER}

The present invention relates to a ladder.

In general, a so-called type A ladder is used when performing aerial work at a construction site. However, since the A-type ladder is a hinged structure of a pair of ladders from the top, there is a risk of falling and slipping when climbing up the ladder.

In particular, there is a risk of slipping and injuries when using an A-type ladder against a wall for wall work. In the case of using the ladder unfolded, it is difficult to work because it cannot be installed close to the wall. When the lengths of both ladders are adjusted to be different and used in the form of a right triangle, there is a risk that the ladder installed on the opposite side of the wall does not apply a load, and thus slips and hurts.

As such, the A-type ladder has a risk of being injured or slipping in the forward-backward direction, and there is a risk of falling in the lateral direction. It is necessary and there are always two or more workers.

However, since most ladder users have to climb the ladder by themselves and work, there are significant difficulties in the work, and the ladder fall accidents due to this are frequently reported. In addition, even when an individual works with the A-type ladder, there is a problem in that there is a similar accident risk because the person who holds the A-type ladder does not deserve it and works alone.

Accordingly, there is a demand for a technology capable of securing the A-type ladder to the floor surface and ensuring the safety of workers even at a high position of the ladder.

Patent Literature: Korean Registered Patent No. 10-1825327 (Registration on Jan. 29, 2018)

Embodiments of the present invention is to provide a ladder that can be secured to the floor surface, so a safe operation even at a high position.

Ladder according to an embodiment of the present invention, a pair of first frames arranged parallel to each other; A first support bar connecting the pair of first frames; A pair of second frames rotatably connected to the pair of first frames and disposed parallel to each other; A second support bar connecting the pair of second frames; And an electromagnet unit provided at a lower end of at least one of the pair of first frames and the pair of second frames.

At this time, the present invention further includes a connecting frame whose both ends are hinged to the first frame and the second frame, respectively, wherein the connecting frame has a first connecting bar, one end of which is hinged to the lower portion of the first frame; And a second connecting bar having one end hinged to the lower portion of the second frame and the other end hinged to the other end of the first connecting bar.

In addition, the present invention is a safety frame rotatably connected to the upper portion of the second frame through a rotating pin; And a holder provided on the upper portion of the second frame and providing a fixing hole part into which an end portion of the safety frame is inserted, wherein the safety frame is inserted into the safety frame so that the rotation pin is inserted into the safety frame. A moving slit may be formed to be moved in one direction.

In addition, the present invention is a support plate having one end hinged to the second frame; And a rotating bar having one end hinged to the first frame and the other end hinged to the support plate.

In addition, the electromagnet unit is a power supply; An electromagnet unit capable of generating magnetic force by receiving electric power from the power supply unit; And it may include a switch for selectively applying power from the power supply to the electromagnet.

Embodiments of the present invention can be securely fixed to the ladder by using the electromagnet unit, there is an advantage that the operator can safely work even in a state where the worker climbs a high point of the ladder.

Particularly, the embodiments of the present invention have an advantage in that a worker can safely work while being supported by a safety frame while climbing on a high point of a ladder.

1 is a perspective view showing a ladder according to an embodiment of the present invention.
2 is a state diagram showing an operating state of a safety frame in a ladder according to an embodiment of the present invention.
Figure 3 is a state diagram showing the operating state of the support plate, when installing the ladder according to an embodiment of the present invention.
Figure 4 is a state diagram showing the operating state of the support plate, when folding the ladder according to an embodiment of the present invention.
5 is a block diagram showing an electromagnet unit of a ladder according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation according to an embodiment of the present invention. The following description is one of several aspects of the present invention that can be claimed for a utility model, and the following description may form part of a detailed description of the present invention. However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted to clarify the present invention.

The present invention can be applied to various changes and may include various embodiments, and specific embodiments will be illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that all modifications, equivalents, and substitutes included in the spirit and scope of the present invention are included.

And terms including ordinal numbers such as first and second may be used to describe various components, but the corresponding components are not limited by these terms. These terms are only used to distinguish one component from another. When a component is said to be'connected' or'connected' to another component, it is understood that other components may be directly connected to or connected to the other component, but other components may exist in the middle. It should be. Terms used in the present application 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 indicates otherwise.

1 is a combined perspective view showing a ladder according to an embodiment of the present invention, Figure 2 is a ladder diagram according to an embodiment of the present invention, is a state diagram showing the operating state of the safety frame, Figure 3 is the present invention When installing the ladder according to an embodiment, it is a state diagram showing the operating state of the supporting plate, Figure 4 is a state diagram showing the operating state of the supporting plate when folding the ladder according to an embodiment of the present invention, Figure 5 is It is a block diagram showing an electromagnet unit of a ladder according to an embodiment of the invention.

1 to 5, the ladder according to an embodiment of the present invention, the first frame 110, the second frame 120, the connecting frame 400, the electromagnet unit 300, the safety frame 500, a holder 600, a support plate 700 and a rotating bar 800.

Specifically, the first frame 110 may include a pair of frames spaced apart from each other. A plurality of first support bars 210 may be horizontally connected to the pair of frames so as to be spaced apart in the height direction. For example, the first frame 110 and the first support bar 210 may be provided in the form of a “ㅒ” as a whole.

The second frame 120 may be rotatably connected to the first frame 110 so as to be collapsible. For example, the upper end of the first frame 110 and the upper end of the second frame 120 may be rotatably linked through a folding bracket. Through this, the first frame 110 and the second frame 120 may be conveniently moved or stored in a narrow space in a state of being superimposed on each other when the ladder is not used.

The second frame 120 may include a pair of frames configured in a similar form to the first frame 110. The second frame 120 may be horizontally connected so that the plurality of second support bars 220 are spaced apart in the height direction. For example, the second frame 120 and the second support bar 220 may be provided in a “ㅒ” shape as a whole.

Electromagnet units 300 may be provided at the lower ends of the first frame 110 and the second frame 120. In this embodiment, the electromagnet unit 300 is installed at the lower end of the first frame 110 and the second frame 120, respectively, but the electromagnet unit 300 is installed only at the lower end of the first frame 110, or 2 It may be installed only in the lower portion of the frame 120.

The electromagnet unit 300 includes an electromagnet unit 310 mounted at a lower end of the first frame 110 or a lower end of the second frame 120, a power supply unit 320 provided in a battery form for power supply, and power A switch unit 330 for selectively applying the power of the supply unit 320 to the electromagnet unit 310 may be included.

Accordingly, in a state where the ladder is placed on a floor surface (for example, on a steel plate of a ship) to which a magnetic force is applicable, when an operator operates an operation switch of the switch unit 330, the switch unit ( By the on operation of 330, the power of the power supply unit 320 can be applied to the electromagnet unit 310, and at this time, through the magnetic force by the electromagnet unit 310, the ladder can be securely fixed to the floor surface. have.

The connection frame 400 may be hingedly connected between the first frame 110 and the second frame 120. For example, the connection frame 400 has a first connection bar 410, one end of which is hinged to the lower portion of the first frame 110, and one end of which is hinged to the lower portion of the second frame 120 and the other end is made of It may be composed of a second connecting bar 420 hinged to the other end of the 1 connecting bar (410).

The safety frame 500 may be understood as a safety device that can reduce a worker's risk of falling when working at a high position of a ladder. For example, an operator can safely carry out work at a high position of a ladder, while supporting the body to the safety frame 500 or holding the safety frame 500.

The safety frame 500 may be rotatably connected to the upper portion of the second frame 120 through a rotating pin 510. When the ladder is moved or stored, the safety frame 500 maintains a state rotated in close contact with the second frame 120 by an operator, so that the ladder can be easily moved and stored. On the other hand, when a worker's work is required by using a ladder, the safety frame 500 is rotated to be located on the same line as the second frame 120 by the operator, so that the worker is in the safety frame 500 In support, safe work can be performed.

The safety frame 500 may be formed with an extended movement slit 520 in which the rotating pin 510 is movable in the longitudinal direction. The movement slit 520 may provide a movement path capable of relative movement of the rotating pin 510. Accordingly, when inserting the end of the safety frame 500 into the holder 600, the operator is convenient to the end of the safety frame 500 to the fixing groove 610 of the holder 600 using the moving slit 520 Can be inserted and fixed.

The holder 600 may be configured as a pair that are respectively installed on the upper portion of the pair of second frames 120. A fixing groove 610 for fixing an end of the safety frame 500 may be formed in the holder 600. The fixing groove 610 may provide a holding space into which an end of the safety frame 500 can be inserted.

The support plate 700 may be formed of a plate that allows the operator to mount the operator's foot at the height of the ladder. One end of the support plate 700 may be hinged to the second frame 120, and the middle portion of the support plate 700 may be rotatably connected to the first frame 110 through a rotating bar 800. Thus, when the first frame 110 and the second frame 120 are folded to each other, the support plate 700 may be folded on the ladder while rotating in the second frame 120 and the rotating bar.

The rotation bar 800 may be rotatably connected between the support plate 700 and the first frame 110. For example, one end of the rotating bar 800 may be hinged to the first frame 110, and the other end of the rotating bar 800 may be hinged to the support plate 700.

When explaining the operation process of the present invention made of such a configuration is as follows.

First, the worker moves the ladder in a state where the ladder is held, to a place where ladder work is required, particularly, where there is a floor surface to which magnetic force is applicable. At this time, the first frame 110 and the second frame 120 of the ladder are kept folded.

When the movement of the ladder is completed to a place where ladder work is required, the operator unfolds the first frame 110 and the second frame 120 and rotates the support plate 700 so that the support plate 700 is maintained in a horizontal state. Then, the safety frame 500 is rotated to be positioned on the same line as the second frame 120. Thereafter, the switch unit 330 of the electromagnet unit is turned on. At this time, by the on operation of the switch unit 330, the power of the power supply unit 320 may be applied to the electromagnet unit 310, through the magnetic force by the electromagnet unit 310, the ladder is fixed to the bottom surface , Ladder installation is completed.

As such, when the installation of the ladder is completed, the operator can safely perform the aerial work in a state where the ladder is raised to the support plate 700 of the ladder and supported by the safety frame 500.

When the aerial work using the ladder is completed, the operator can fold the first frame 110 and the second frame 120 in the reverse order of the above-described method. Thereafter, the operator can move the folded ladder to the original position and store it.

As described above, the present invention can securely fix the ladder to the floor surface using an electromagnet unit, so that even when the worker climbs the high point of the ladder, the worker can safely perform the work and the high point of the ladder In the elevated state, the worker has excellent advantages such as being able to safely work while being supported by the safety frame.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may be implemented in other specific forms without changing the technical spirit or essential features of the present invention. You will understand. For example, a person skilled in the art can change the material, size, etc. of each component according to the application field, or combine or replace the embodiments to implement the present invention in a form not specifically disclosed, but this design It is not within the scope of. Therefore, the embodiments described above are illustrative in all respects and should not be understood as limiting, and it should be said that these modified embodiments are included in the technical idea described in the utility model registration claim of the present invention.

110: first frame 120: second frame
121: main frame 122: sub frame
210: first support bar 220: second support bar
300: electromagnet unit 310: electromagnet
320: power supply 330: switch
400: connection frame 500: safety frame
510: rotating pin 520: moving slit
600: holder 610: fixed hole
700: support plate 800: rotating bar

Claims (5)

A pair of first frames arranged parallel to each other;
A first support bar connecting the pair of first frames;
A pair of second frames rotatably connected to the pair of first frames and disposed parallel to each other;
A second support bar connecting the pair of second frames; And
A ladder comprising an electromagnet unit provided at a lower end of at least one of the pair of first frames and the pair of second frames. According to claim 1,
Each end further includes a connecting frame hinged to the first frame and the second frame, respectively.
The connection frame
A first connection bar having one end hinged to a lower portion of the first frame; And
One end is hinged to the lower portion of the second frame, the other end is a ladder including a second connecting bar hinged to the other end of the first connecting bar. According to claim 1,
A safety frame rotatably connected to the upper portion of the second frame through a rotating pin; And
It is installed on the upper portion of the second frame, the end of the safety frame further includes a holder for providing a fixed hole that can be inserted,
In the safety frame, a ladder in which a moving slit is formed so that the rotating pin is inserted so that the safety frame can be moved in one direction with respect to the rotating pin. According to claim 1,
A support plate having one end hinged to the second frame; And
A ladder including a rotating bar having one end hinged to the first frame and the other end hinged to the support plate. According to claim 1,
The electromagnet unit
Power supply;
An electromagnet unit capable of generating magnetic force by receiving electric power from the power supply unit; And
A ladder including a switch for selectively applying power from the power supply to the electromagnet.

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