KR102495519B1 - one-touch type folding ladder apparatus for fire truck - Google Patents

Abstract

The present invention provides a one-touch type folding ladder apparatus for a fire truck, which comprises: a coupling plate which is vertically coupled to the side of the fire truck to be in surface contact with the side of the fire truck; an upper support part which is coupled to an upper portion of the coupling plate; a lower support part which is coupled to a lower portion of the coupling plate; a ladder part which is vertically provided across the upper support part and the lower support part; an upper hinge link assembly which is provided between the upper support part and the ladder part, and supports the rotational folding or unfolding of the ladder part with respect to the upper support part; a lower hinge link assembly which is provided between the lower support part and the ladder part, and supports the rotational folding or unfolding of the ladder part with respect to the lower support part; and a one-touch locking part which is provided in front of the lower hinge link assembly in a pressable manner, and locks or releases the folded state of the lower hinge link assembly with respect to the lower support part by a user's pressing action. Therefore, when a fire truck is dispatched to a scene due to a fire or emergency situation, the ladder can be easily and safely extended to the ground from the fire truck with just a single pressing action, thereby allowing firefighters to quickly and safely descend from the fire truck or transport equipment. When fire extinguishing is completed, the ladder can be easily and conveniently folded and come into contact with the side of the fire truck to promote the movement of the fire truck, thereby allowing rapid and easy operation of the fire truck.

Description

Ladder device for fire truck with one-touch folding function {one-touch type folding ladder apparatus for fire truck}

The present invention relates to a ladder device for a fire truck having a one-touch folding function, and more particularly, when a fire engine is dispatched due to a fire or emergency situation and arrives at the scene, the ladder is easily and safely grounded in the fire truck with just one pressing operation. , so that firefighters can quickly and safely get off the fire truck or carry equipment, and when firefighting is completed, the ladder is easily and conveniently folded to the side of the fire engine to ensure smooth movement of the fire truck. It relates to a ladder device for a fire truck having a one-touch folding function that can make this happen quickly and easily.

In general, a fire truck used for extinguishing a fire is dispatched to the fire site in a state where a large amount of fire-fighting water is stored in a water tank and sprays fire-fighting water to extinguish the fire. It also stores foam to respond to fire.

In order to manufacture such a fire truck, first, a water tank for storing fire water is installed in the body frame of the truck, and various injection power devices such as various pumps, tubes, valves, ladders, etc. was installed, and after finishing the upper edge and side of the water tank with corner finishing members, warning lights or indicator lights were installed on the corner finishing members.

On the other hand, since water tanks have different capacities and shapes depending on the storage capacity and use of fire-fighting water, and the installation places and types of various injection power devices are different, they are manufactured by a custom-made production method that reflects the needs of the owner in reality. It is made of stainless steel material to have sufficient pressure resistance. Therefore, the corner finishing member for finishing the water tank was also manufactured and installed in a separate order production method corresponding to the standard of the water tank, and this corner finishing member was manufactured in advance in a separate molding mold, and then glass fiber was added to the molding mold. It was produced by repeatedly applying and drying the resin liquid.

An example of a fire truck according to the prior art is disclosed in Republic of Korea Utility Model Registration No. 20-0392365 (registered on August 2, 2005, hereinafter referred to as 'Patent Document 1').

On the other hand, the fire engine according to the prior art is provided with a ladder fixedly.

However, since the ladder of the fire engine according to the prior art is simply provided to be fixed vertically to one side of the fire engine, when firefighters need to climb or descend urgently at a fire site, there is a risk of safety accidents, such as delaying time or being easily injured. There is a problem that there may be.

In addition, the ladder of the fire truck according to the prior art has a problem that it is difficult for firefighters to quickly mobilize and transport equipment at a fire site, etc., so that it is difficult to quickly extinguish the fire and the operation of the fire truck can be difficult.

Republic of Korea Utility Model Registration No. 20-0392365 (registered on August 2, 2005)

An object of the present invention is to allow firefighters to quickly and safely get off the fire truck or carry equipment by easily and safely extending the ladder from the fire truck to the ground with a single pressing action when the fire engine is dispatched due to a fire or emergency and arrives at the scene. When the fire is extinguished, the ladder is easily and conveniently folded to the side of the fire engine so that the movement of the fire engine can be carried out smoothly. It is to provide a ladder device for a fire engine having.

In order to achieve the above object, a fire truck ladder device having a one-touch folding function according to the present invention includes: a coupling plate that is vertically and vertically in contact with the side of the fire engine and coupled; an upper support coupled to an upper portion of the coupling plate; a lower support coupled to a lower portion of the coupling plate; a ladder portion provided vertically across the upper support portion and the lower support portion; an upper hinge link assembly provided between the upper support portion and the ladder portion to support rotational folding or rotational deployment of the ladder portion with respect to the upper support portion; a lower hinge link assembly provided between the lower support unit and the ladder unit to support rotational folding or rotational deployment of the ladder unit with respect to the lower support unit; and a one-touch locking unit which is provided in front of the lower hinge link assembly so as to be able to be pressed and allows the lower hinge link assembly to be fixedly locked or unlocked in a folded state with respect to the lower support unit by a user's pressing operation. to be characterized

Here, the upper hinge link assembly includes an upper link arm having one side rotatably connected to the upper support and the other side rotatably connected to the ladder, and one side and the other side of the upper support rotatably and flexibly provided It is preferable to include an air spring so that the impact is buffered when the ladder part is folded.

In addition, the lower hinge link assembly has one side rotatably connected to the lower support part and the other side rotatably connected to the ladder part, and when the ladder part is pivotally deployed, the upper link arm rotates at a greater turning radius than the turning radius It is preferable to include a lower link arm provided to be.

According to the present invention, when a fire engine is dispatched due to a fire or an emergency and arrives at the scene, the ladder is easily and safely spread from the fire truck to the ground with a single pressing action, so that firefighters can get off the fire truck quickly and safely or carry equipment When the fire is extinguished, the ladder is easily and conveniently folded to the side of the fire engine so that the movement of the fire engine can be performed smoothly. A ladder device for a fire engine can be provided.

1 is a front view of a fire truck showing a folded state in which a fire truck ladder device having a one-touch folding function according to the present invention is provided on the side of the fire truck;
2 is a view showing a state in which the ladder device for a fire engine having a one-touch folding function of FIG. 1 is unfolded;
Figure 3 is an enlarged view of a state in which the fire truck ladder device having a one-touch folding function of Figure 1 is folded;
Figure 4 is an enlarged view of the unfolded state of the fire engine ladder device having a one-touch folding function of Figure 3;
5 is a front view of a fire truck ladder device having a one-touch folding function according to the present invention;
6 is a cross-sectional view taken along line A-A' of FIG. 5;
7 is a cross-sectional view taken along line BB' of FIG. 5;
8 is a cross-sectional view along line C-C′ of FIG. 5;
9 is a cross-sectional view taken along line D-D′ of FIG. 6 .

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 to 4, the ladder device for a fire engine having a one-touch folding function according to the present invention includes a coupling plate 100 that is vertically and vertically in contact with the side surface of the fire engine 10 and coupled, Provided vertically across the upper support portion 200 coupled to the upper portion of the coupling plate 100, the lower support portion 300 coupled to the lower portion of the coupling plate 100, and the upper support portion 200 and the lower support portion 300 The upper hinge link assembly provided between the ladder part 400 and the upper support part 200 and the ladder part 400 to support the rotational folding or rotational deployment of the ladder part 400 with respect to the upper support part 200 500, the lower hinge link assembly 600 provided between the lower support part 300 and the ladder part 400 to support the rotational folding or rotational deployment of the ladder part 400 with respect to the lower support part 300 And, one-touch locking that is provided to be able to be pressed in front of the lower hinge link assembly 600 so that the lower hinge link assembly 600 is locked or unlocked in a folded state with respect to the lower support part 300 by a user's pressing operation Includes section 700.

Accordingly, as shown in FIGS. 1 and 2, when a fire engine is dispatched due to a fire or emergency situation and arrives at the scene, the ladder is easily and safely spread from the fire truck to the ground with just one pressing action, so that the firefighters can It can be quickly and safely lowered or transported equipment, and when fire suppression is completed, the ladder is easily and conveniently folded to the side of the fire truck so that the movement of the fire truck is smooth, so that the operation of the fire truck is done quickly and easily. It is possible to provide a fire truck ladder device having a one-touch folding function that can be performed.

As shown in FIGS. 3 and 4, the coupling plate 100 is directly coupled to the side of the fire engine 10 with fastening members such as bolts and nuts, and the upper and lower supports 200 and lower supports ( 300) is provided to be fixedly coupled.

As shown in FIGS. 3 and 4, the upper support part 200 is coupled to a pair left and right along the width of the ladder part 400 on the upper part of the coupling plate 100, and the upper hinge link assembly 500 on the inside An upper hinge 210 to which the upper link arm 510 of ) is rotatably connected is provided, respectively.

As shown in FIGS. 3 and 4, a pair of lower support parts 300 are coupled to the lower part of the coupling plate 100 from side to side along the width of the ladder part 400, and on the inside, the lower hinge link assembly 600 A lower hinge 310 to which the lower link arm 610 of ) is rotatably connected is provided, respectively.

As shown in FIGS. 3 to 5 , the ladder portion 400 corresponds to a pair of upper support portions 200 and a pair of lower support portions 300 coupled to the upper and lower portions of the coupling plate 100, respectively. It is provided in a form having a horizontal width to be, and is provided vertically long over the top and bottom of the coupling plate 100.

Here, as shown in FIGS. 3 and 4, a pair of handles 410 are provided at the upper left and right sides of the ladder part 400 so that the user can climb or lower it by hand, and as shown in FIG. Likewise, it is preferable that a pair of self-locking nuts 420 are provided on the inside of the left and right sides of the ladder part 400 so that the ladder part 400 is each fixedly maintained in a folded or unfolded state.

As shown in FIG. 6, the upper hinge link assembly 500 is provided with a pair left and right corresponding to the upper support 200, and one side is rotatably connected to the upper hinge 210 of the upper support 200 And the upper link arm 510, the other side of which is rotatably connected to the ladder part 400, and one side and the other side of the upper support part 200 are provided to be rotatable and stretchable, so that shock is buffered when the ladder part 400 is folded. It includes an air spring 520 to be.

Accordingly, when the ladder unit 400 is folded, the air spring 520 contracts and stores the energy to be extended, and when the ladder unit 400 is unfolded, the air spring 510 easily rotates with little force ( 520) is stretched, so that the rotational folding or rotational deployment of the ladder portion 400 with respect to the upper support portion 200 can be smoothly performed with little force by the upper hinge link assembly 500, and the ladder portion ( 400) is folded in an unfolded state, the air spring 520 cushions the shock caused by external force, so that it is gently folded and damage can be prevented.

As one embodiment of the present invention, as shown in FIGS. 3 to 6, the upper link arm 510 has one end and the other end inclined at the same angle and the middle part is formed to form a horizontal upper link arm The rotation of the 510 allows the ladder unit 400 to be smoothly expanded or folded, the air spring 520 includes an air cylinder, and the piston end at which the air spring 520 expands and rotates An air spring support part 521 supporting the expansion and rotation of the air spring 520 with respect to the upper support part 200 is provided, and a ladder part ( 400) is preferably provided with an upper bumper 530 made of an elastic material so as to cushion the folding shock when folding.

As shown in FIGS. 3 to 5 , the lower hinge link assembly 600 is provided with a pair left and right corresponding to the lower support 300, one side of which is rotatably connected to the lower support 300 and a ladder portion The other side is rotatably connected to 400 and includes a lower link arm 610 provided to be rotated with a larger rotation radius than the rotation radius of the upper link arm 510 when the ladder unit 400 is pivotally deployed.

Accordingly, as shown in FIGS. 7 and 8 , when the user presses the one-touch locking part 700 so that the fixed locking state in which the ladder part 400 is folded to the lower support part 300 is released, the lower link arm 610 It is rotated and the ladder part 400 can be smoothly unfolded by the lower hinge link assembly 600 in a folded state.

As an embodiment of the present invention, as shown in FIG. 7, the lower link arm 610 has one end and the other end inclined at the same angle as the upper link arm 510, and the middle part has a horizontal shape. However, the lower link arm 610 is formed so that the inclined one end and the other end are extended longer than the upper link arm 510, and the ladder part 400 is formed by the rotation of the lower link arm 610. The lower bumper 620 is made of an elastic material so that the unfolding or folding of the lower hinge link assembly 600 is opposite to the ladder part 400, and the folding impact is buffered when the ladder part 400 is folded. ) is preferably provided.

In addition, as shown in FIG. 8, the lower hinge link assembly 600 has an engaging portion 630 in the form of a horizontal bar, into which a hook 730 to be described later of the one-touch locking portion 700 is engaged and engaged. it is desirable that

Accordingly, when the push button 710 to be described later of the one-touch locking unit 700 is pressed, the locking hook 730 is released from the engaging portion 630 and the locked state is released, thereby releasing the ladder portion ( 400) can be smoothly rotated and deployed from the folded state to the unfolded state, and when the ladder part 400 is folded from the unfolded state to the folded state, the hook 730 is engaged with the engaging part 630 and caught, so that the ladder The folded state of the unit 400 can be firmly and stably locked again.

As shown in FIGS. 5 and 8 , the one-touch locking unit 700 is provided as a pair to be provided at the front of the lower hinge link assembly 600 provided as a left and right pair, respectively, and the lower hinge link assembly 600 ) A push button 710 provided to be able to be pressed in the locking body 701 forming a handle-shaped exterior at the front, and a push button connected to the push button 710 and inside the lower hinge link assembly 600 ( A button hinge link 720 provided so that the other side is lifted by the principle of a lever by the pressurization of 710), and a concave groove is provided at the other end of the button hinge link 720 to engage when the push button 710 is released It includes an engaging hook 730 engaged with the portion 630 and released from the engaged state with the engaging portion 630 when the push button 710 is pressed.

Accordingly, when the user presses the push button 710 with a single one-touch pressing operation, the lower link arm 610 of the lower hinge link assembly 600 is unlocked from the folded locked state and is rotatable, thereby enabling the ladder to be rotated. The unit 400 can be easily and conveniently unfolded in a folded state, and when the ladder unit 400 is folded in an unfolded state, it can be firmly fixed again so as not to be easily loosened.

Here, the push button 710 is elastically supported by a button spring provided inside the locking body 701, and the button hinge link 720 moves in the principle of a lever inside the lower hinge link assembly 600 It is preferable to be provided so as to be rotatably supported by a plurality of hinges so as to be.

Although the technical aspect has been described in the above description and accompanying drawings, the technical spirit of the present invention is for the purpose of explanation, not limiting it, and those having ordinary technical knowledge in the technical field of the present invention It will be understood that the technical spirit of the present invention can be variously modified and changed within the scope of not departing from the technical scope described in the claims to be described later.

100: coupling plate 200: upper support
300: lower support part 400: ladder part
410: handle 420: self-lock nut
500: upper hinge link assembly 510: upper link arm
520: air spring 521: air spring support
530: upper bumper 600: lower hinge link assembly
610: lower link arm 620: lower bumper
700: one-touch locking unit 710: push button
720: button hinge link 730: hanging hook

Claims (3)

Combining plate 100 coupled to the side of the fire truck 10 in vertical contact with the surface;
an upper support portion 200 coupled to an upper portion of the coupling plate 100;
a lower support portion 300 coupled to a lower portion of the coupling plate 100;
A ladder part 400 provided vertically across the upper support part 200 and the lower support part 300;
An upper hinge link assembly 500 provided between the upper support part 200 and the ladder part 400 to support rotational folding or rotational deployment of the ladder part 400 with respect to the upper support part 200;
A lower hinge link assembly 600 provided between the lower support part 300 and the ladder part 400 to support rotational folding or rotational deployment of the ladder part 400 with respect to the lower support part 300; and
It is provided to be able to be pressed in the front of the lower hinge link assembly 600, and the lower hinge link assembly 600 is fixedly locked or unlocked in a folded state with respect to the lower support part 300 by a user's pressing operation. One-touch locking unit 700;
including,
The upper hinge link assembly 500 includes an upper link arm 510 having one side rotatably connected to the upper support part 200 and the other side rotatably connected to the ladder part 400, and the upper support part ( 200) includes an air spring 520 provided to be rotatable and stretchable on one side and the other side so that shock is buffered when the ladder part 400 is folded,
The lower hinge link assembly 600 has one side rotatably connected to the lower support part 300 and the other side rotatably connected to the ladder part 400, but when the ladder part 400 is pivotally deployed, the upper link Fire truck ladder device having a one-touch folding function, characterized in that it comprises a lower link arm 610 provided to be rotated with a larger rotation radius than the rotation radius of the arm 510.

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