KR20200129533A - Lifesaving ladder car - Google Patents

Abstract

The present invention provides a means which can expand a support area in the width direction of a car body to ensure work safety even when a stretchable ladder member is deployed at a height of 30 floors or more, thereby preventing movement and rollover of the car body. A lifesaving ladder car includes: a car body wherein a cabin is installed on an upper portion of the front of a chassis frame, and a base frame installed on the chassis frame exposed to the rear of the cabin; and a stretchable ladder assembly which can be deployed to a height of 30 floors or more. The lifesaving ladder car further includes a safety device mounted on the base frame to connect the base frame and the stretchable ladder assembly. The safety device includes: an extension part pivoting in the width direction of the car body to form support points in the width direction of the car body, and stably fixing onto the car body; and an operating part for turning the extension part in the width direction of the car body during high place work and accommodating the extension part in the base frame when the car body travels. The distance between the support points formed by the extension part in the width direction of the car body corresponds to the length of the base frame.

Description

Lifesaving leather car {LIFESAVING LADDER CAR}

The present invention relates to a life-saving leather car, and more particularly, to a life-saving leather car capable of preventing the flow and overturning of a vehicle body even if the expansion ladder member is deployed to a height of 30 or more floors.

In general, the high-altitude ladder truck is mainly used to raise or lower a heavy object that carries a large load on a structure such as a high-rise building.

Such an elevated ladder vehicle includes a vehicle body for securing maneuverability, an extension ladder member for improving workability, and a plurality of outriggers for securing work safety.

In the above-described high place ladder vehicle, after fixing the vehicle body in a stable state using an outrigger, the new ladder member is deployed to a desired height to perform the high place operation.

On the other hand, as high-rise buildings (30 to 50 stories) or high-rise buildings (more than 50 stories or more than 200 meters in height) are increasing, the length (height) of the new ladder member of the height ladder is also increasing.

However, when the length of the expansion ladder member increases, the center of gravity of the expansion ladder member exists outside the outrigger, so there is a risk that the high place ladder car will overturn.

In other words, the center of gravity of the expansion ladder member including the load of the heavy object must be located within the division connecting the supporting points of the outriggers (hereinafter referred to as "supporting area").

However, since the conventional high-altitude ladder car has a narrow support area formed by the outriggers, when the expansion ladder member is deployed to a height of 30 or more floors, there is a problem that the vehicle body is moved by a wind load or the center of gravity is moved and the vehicle body is overturned. .

Such a rollover accident of the conventional high-altitude ladder vehicle causes personal injury and a lot of material loss, and thus a device capable of ensuring the safety of the high-altitude ladder vehicle is required.

Accordingly, the inventor of the present invention has endeavored to develop a new safety device according to an increase in the length of the expansion ladder member, and as a result, the present invention has been filed.

0001). Korean Patent Registration 10-1817338 (Registration date: 2018. 01. 04.) 0002). Republic of Korea Patent Registration 10-1230656 (Registration date: 2013. 01. 31.) 0003). Korean Patent Registration 10-1251991 (Registration date: 2013. 04. 02.) 0004). Korean Patent Registration 10-1417407 (Registration date: 2014. 06. 30.) 0005). Republic of Korea Patent Registration 10-1459028 (Registration Date: October 31, 2014)

An object of the present invention is to ensure the safety of work even if the expansion ladder member is deployed to a height of 30 stories or more, by allowing the support area to be expanded in the width direction of the vehicle body, thereby preventing the vehicle body from flowing and overturning. It is to provide a means of being.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned are clearly to those of ordinary skill in the technical field to which the present invention belongs from the following description. It will be understandable.

The above object is, according to the present invention, for life-saving having a cabin installed on the front upper part of the chassis frame and a base frame installed on the chassis frame exposed to the rear of the cabin, and a telescopic ladder assembly that can be deployed to a height of 30 or more floors. In the leather car, the life-saving leather car is mounted on a base frame and includes a safety device connecting the base frame and the expansion ladder assembly, and the safety device is rotated in the width direction of the vehicle body to form a support point in the width direction of the vehicle body. An extension part to be stably fixed; And an operation unit for turning the expansion part in the width direction of the vehicle body during high place work and accommodating the expansion part into the base frame when driving the vehicle body; but, the distance between the support points formed by the expansion part in the width direction of the vehicle body may correspond to the length of the base frame. have.

Specifically, the operation unit includes a turning table on which an extension unit is mounted; And a first transfer assembly for moving the extended portion mounted on the turning table so as to be pivoted in the width direction of the vehicle body, wherein the first transfer assembly includes: a pair of first base rails formed in parallel; A first movable rail formed in a pair and movably mounted on the first base rail; And a first power transmission means for moving the first movable rail along the first base rail, wherein the first base rail is fixedly installed in the center of the upper surface of the base frame, the first base rail and the first movable rail It has a length extending from the front of the base frame to the rear of the base frame, and the turning table may be installed on the first movable rail to connect the upper surfaces of the central portion of the pair of first movable rails to each other.

Specifically, the first power transmission means includes: a first drive motor fixed to the rear of the base frame and the upper surface of the base frame connected to each other, but fixed between a pair of first base rails; A first driving sprocket coupled to the rotation shaft of the first driving motor; A first driven sprocket fixed to the upper surface of the base frame connected to the front of the base frame and coupled to the bracket fixed between the pair of first base rails; And a first chain that is supported by the first driving sprocket and the first driven sprocket and rotates, wherein any one point of the first chain is attached to any one first support bar connecting between the pair of first movable rails. Can be combined.

Specifically, the expansion unit includes a plurality of jack cylinders forming support points in the width direction of the vehicle body; And a second transfer assembly on which the telescopic ladder assembly is mounted and guides the jack cylinders in the width direction during high place work and guides the jack cylinders to be received into the base frame when the vehicle body is driven. Including, the second transfer assembly, a pair of second base rails formed side by side; A second movable rail formed in a pair and movably mounted on the second base rail; And a second power transmission means for moving the second movable rail along the second base rail, wherein the central portion of the second base rail is fixedly installed on the turning table, and the second base rail and the second movable rail are the first It is provided with the same length as the length of the base rail and the first movable rail, and on the front side upper surface of the second movable rail, a support for supporting the bottom of the orbiting ladder assembly so as to be pivotable in the vertical direction may be installed.

Specifically, the second power transmission means includes: a second drive motor fixed to a rear surface of the support panel connecting between a pair of second base rails and an upper surface of the support panel connected to each other; A second drive sprocket coupled to the rotation shaft of the second drive motor; A second driven sprocket coupled to the bracket fixed to the upper surface of the support panel connected to the front of the support panel; And a second chain that rotates while being supported by the second driving sprocket and the second driven sprocket, wherein any one point of the second chain may be coupled to a second support bar connecting a pair of second movable rails. have.

Specifically, the jack cylinders may be installed on both front and rear sides of the second movable rail so as to extend the rod with the support plate in close contact with the ground to the ground.

Specifically, guards in the shape of a vertical plate that prevent rotation of the extension portion accommodated in the base frame during vehicle body driving may be formed vertically extending from the base frame on both front sides of the first base rail.

Specifically, an upper surface of each of the ladder members constituting the expansion-contracting ladder assembly may be formed to have a convex curvature cross-section through which the rollers of the cart moving along the ladder member contact and travel.

According to the present invention, since the extension part corresponding to the length of the base frame is rotated in the width direction of the vehicle body to support the vehicle body, the support area can be remarkably expanded compared to the conventional ladder vehicle, and thus the expansion ladder assembly can be increased to 30 floors or more. Even if it is deployed at a height, it is possible to provide an effect of preventing the vehicle body from flowing and overturning.

In addition, since the leather car for life-saving according to the present invention is formed so that the upper surface of each ladder member running in contact with the rollers of the bogie has a convex curvature, each of the ladder members can be expanded and contracted without shaking. It is possible to provide an effect that can minimize friction.

1 is a view showing a life-saving leather car according to the present invention,
FIG. 2 is a view as viewed from "A" of FIG. 1 according to the present invention,
3 and 4 are views showing the safety device shown in Figs. 1 and 2, Fig. 3 is a view showing a base member, Fig. 4 is a view showing a support area expansion member,
5 to 7 are views showing the operating state of the stabilizer shown in Figure 1, Figure 5 is a view showing a state in which the extension is accommodated in the base frame, Figure 6 is a view showing a state in which the extension is moved to the outside of the guard And FIG. 7 is a view showing a state in which the extension part is rotated in the width direction of the vehicle body.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, a description of a function or configuration that is already known will be omitted in order to clarify the gist of the present invention.

In addition, terms used in the present specification are for describing exemplary embodiments and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprises" and/or "comprising" does not exclude the presence or addition of one or more other elements.

In the accompanying drawings, FIGS. 1 and 2 are views showing a leather car for life-saving according to the present invention. The leather car 100 for life-saving according to the present invention is a vehicle body 110 and can be deployed at a height of 30 or more floors. It includes a new ladder assembly 180 and a safety device 120 to ensure work safety so that the vehicle body 10 does not flow and overturn during high place work.

Here, the high place operation means a work in a state in which the ladder members 182 of the new ladder assembly 180 are deployed to a height of 30 stories or more.

First, the vehicle body 110 is a freight vehicle such as a normal truck, and as anyone can see, a cabin 114 constituting a passenger room is installed at an upper front of the chassis frame 112.

In addition, a flat base frame 116 is installed on the chassis frame 112 exposed to the rear of the cabin 114 so as not to interfere with the driving of the vehicle body 110.

The safety device 120 and the extension ladder assembly 180 are mounted on the base frame 116 installed in this way, and the base frame 116 is connected to the extension ladder assembly 180 via the safety device 120.

Meanwhile, conventional outriggers 118 are installed on both front and rear sides of the base frame 116. At this time, the outriggers 118 are installed at a height that will not interfere with the turning operation of the expansion unit 150 of the safety device 120 to be described later.

The outrigger 118 has a configuration substantially the same as that of an outrigger installed in a conventional high place ladder vehicle, and detailed description of the outrigger 118 is omitted in the present invention.

The safety device 120 forms a support point in the width direction of the vehicle body 110, but the distance between any one support point facing in the width direction of the vehicle body 110 and another support point approximately corresponds to the length of the base frame 116 It is formed so that it is possible to secure the working safety of the life-saving leather car 100.

In other words, the safety device 120 extends the support area by significantly increasing the distance between the support points in the width direction than the distance between the support points in the width direction formed by the outriggers installed on the conventional high-altitude ladder vehicle, thereby expanding the support area, so that the ladder members 182 of the new ladder assembly 180 Even if it is deployed to a height of 30 stories or more, it is possible to prevent the flow and overturn of the vehicle body 110.

3 and 4 are diagrams showing a safety device, the stabilizer 120 is rotated in the width direction of the vehicle body 110 to stably fix the vehicle body 110, an expansion unit 150 and an expansion unit during high place work It includes an operation unit 121 that rotates 150 in the width direction of the vehicle body 110 and accommodates the expansion unit 150 into the base frame 116 when the vehicle body 110 is driven.

The operation unit 121 includes a turning table 140 on which an extension unit 150 is mounted, and a turning table so that the extension unit 150 mounted on the turning table 140 can be rotated in the width direction of the vehicle body 110. 140) and a first transfer assembly 122 for moving.

The first transfer assembly 122 includes a pair of first base rails 124 formed in parallel, and a first movable rail 126 formed in a pair and movably mounted on the first base rail 124, And a first power transmission means 128 for moving the first movable rail 126 along the first base rail 124.

The first base rail 124 is fixedly installed in the center of the upper surface of the base frame 116, as shown, the first base rail 124 and the first movable rail 126 from the front of the base frame 116 It is formed to have a length extending to the rear of the base frame 116 (see Fig. 1).

That is, the first movable rail 126 mounted to be movable on the first base rail 124 performs a linear reciprocating motion along the longitudinal direction of the base frame 116.

Here, the connection relationship between the first base rail 124 and the first movable rail 126 is not particularly limited. However, if the first movable rail 126 can be moved along the first base rail 124 without being separated from the first base rail 124, the first base rail 124 and the first movable rail 126 It is okay to have any connection.

Meanwhile, the first power transmission means 128 is disposed between the first base rail 124 and the first movable rail 126 so as not to interfere with the movement of the first movable rail 126.

The first power transmission means 128 is fixed to the rear of the base frame 116 and the upper surface of the base frame 116 connected to the first drive motor 130 fixed between the pair of first base rails 124 Includes.

In addition, the first power transmission means 128 is a first driving sprocket 132 coupled to the rotational shaft of the first driving motor 130, and the front of the base frame 116 and the upper surface of the base frame 116 connected. The first driven sprocket 134 that is fixed but is coupled to the bracket fixed between the pair of first base rails 124, and the first driven sprocket 132 and the first driven sprocket 134 are supported and rotated. Includes 1 chain 136.

At this time, any one point of the first chain 136 is coupled to any one first support bar 138 connecting between the pair of first movable rails 126, preferably approximately the first movable rail ( It is connected to the first support bar 138 connecting the central part of the 126.

Here, the first chain 136 and the first support bar 138 may be connected through welding, for example, or may be connected through a pin.

On the other hand, the turning table 140 is installed to be rotatable on the pair of first movable rails 126.

Preferably, the turning table 140 is installed on the first movable rail 126 to connect the upper surfaces of the central portions of the pair of first movable rails 126 to each other, and the turning table 140 thus installed has an extension ( 150) is mounted.

Here, the turning table 140 has a configuration similar to that of a conventional turning table widely used in a conventional high place ladder vehicle, and detailed description of the turning table 140 is omitted in the present invention.

The extension unit 150 is equipped with a plurality of jack cylinders 174 and an extension ladder assembly 180, and guides the jack cylinders 174 in the width direction when working at high places, and the jack when the vehicle body 110 is driven. And a second transfer assembly 152 that guides the cylinders 174 to be received into the base frame 116.

The second transfer assembly 152 includes a pair of second base rails 154 formed in parallel, a second movable rail 156 formed in a pair and movably mounted on the second base rail 154, And a second power transmission means 158 for moving the second movable rail 156 along the second base rail 154.

The central portion of the second base rail 154 is fixedly installed on the turning table 140 so that it can be turned by the operation of the turning table 140, the second base rail 154 and the second movable rail 156 It is formed to have the same length as the extended length of the first base rail 124 and the first movable rail 126.

And on the upper surface of the front side of the second movable rail 156, a support 158 is installed so that the bottom portion of the orbiting ladder assembly 180 can be pivoted in the vertical direction, the support 158 being a pair of second movable It is fixedly installed on the second movable rail 156 to connect the upper surfaces of one end of the rails 156 to each other.

Here, the connection relationship between the second base rail 154 and the second movable rail 156 is not particularly limited. However, if the second movable rail 156 can be moved along the second base rail 154 without being separated from the second base rail 154, the second base rail 154 and the second movable rail 156 It is okay to have any connection.

Meanwhile, the second power transmission means 160 is disposed between the second base rail 154 and the second movable rail 156 so as not to interfere with the movement of the second movable rail 156.

The second power transmission means 160 is a second drive motor 164 fixed to the rear of the support panel 162 connecting between the pair of second base rails 154 and the upper surface of the support panel 162 connected Includes.

In addition, the second power transmission means 160 is a second drive sprocket 166 coupled to the rotational shaft of the second drive motor 164, the front of the support panel 162 and the upper surface of the support panel 162 connected. It further includes a second driven sprocket 168 coupled to the fixed bracket, and a second chain 170 supported by the second driving sprocket 168 and the second driven sprocket 168 and rotating.

At this time, one point of the second chain 170 is coupled to the second support bar 172 connecting between the pair of second movable rails 156, preferably approximately the center of the second movable rail 156 It is connected to the second support bar 172 connecting between.

Here, the second chain 170 and the second support bar 172 may be connected through welding, for example, or may be connected through a pin.

Meanwhile, the jack cylinders 174 are rotated in the width direction of the vehicle body 110 along the second transfer assembly 152 during high place work to form a support point.

Jack cylinders 174 are on both front and rear sides of the second movable rail 156, respectively, so that the rod 176 can be extended to the ground side without interfering with the movement of the second movable rail 156, as shown. Installed.

At this time, a support plate 178 in close contact with the ground is attached to the rod 176 of each jack cylinder 174, and the jack cylinders 174 attach the rod 176 so that the support plate 178 is in close contact with the ground during high place work. It is elongated to form a support point for supporting the vehicle body 110 in the width direction of the vehicle body 110.

On the other hand, on both front sides of the first base rail 124, a vertical plate-shaped guard 179 that prevents rotation of the expansion unit 150 mounted on the turning table 140 when the vehicle body 110 is driven is provided on the base frame ( 116) is formed extending vertically.

That is, the front side of the expansion unit 150 accommodated in the base frame 116 when the vehicle body 110 is driven is inserted between the guards 179 by the operation of the operating unit 121, the guard 179 is the vehicle body 110 It is possible to prevent the rotation of the expansion unit 150 that may occur during driving.

Hereinafter, the operating state of the safety device 120 formed as described above will be briefly described.

In order to stably fix the vehicle body 110 using the safety device 120 during altitude work, the vehicle body 110 is stopped at the position where the altitude work is to be performed, and then the outriggers 118 are operated to stabilize the vehicle body 110. Fix it in the state.

When the vehicle body 110 is supported by the outriggers 118, in order to expand the support area of the vehicle body 110 in the width direction of the vehicle body 110, the first drive motor of the first power transmission means 128 By operating 130, the front side of the first movable rail 126 and the front side of the extension 150 inserted between the guards 179 are moved to the outside of the guard 179 (see FIG. 6).

As described above, when the front side of the first movable rail 126 and the front side of the expansion unit 150 are moved to the outside of the guard 179, the turning table 140 is operated to After turning to the front and rear sides to coincide with the width direction of the vehicle body 110 (see FIG. 7), the first driving motor 130 is operated so that the front side of the first movable rail 126 is interposed between the guards 179. Insert.

On the other hand, as described above, when the front and rear sides of the expansion unit 150 are turned in the width direction of the vehicle body 110, the jack cylinders 174 are then rod 176 so that the support plate 178 is in close contact with the ground. ) Is extended to fix the vehicle body 110 in a stable state (see FIG. 7).

In this way, the support area for supporting the vehicle body 110 by the jack cylinders 174 of the outriggers 118 and the extension unit 150 is significantly expanded compared to the conventional high-altitude ladder vehicle, so the expansion ladder assembly 180 is 30 Even if it is deployed to a height above the floor, it is possible to prevent the flow and overturn of the vehicle body 110.

In addition, the position of the new ladder assembly 180 can be adjusted by operating the second drive motor 162 of the second power transmission means 160 during high place work.

Meanwhile, the accommodation of the expansion unit 150 into the base frame 116 is performed in the reverse order of the above-described method (see FIG. 5).

Referring back to FIG. 1, the extension ladder assembly 180 is that the support body 158 installed on the front side upper surface of the second movable rail 156 is installed to be undulating in the vertical direction as described above, and the extension ladder assembly ( 180) is assembled in such a way that a small ladder member 182 is sequentially inserted into a relatively large ladder member 182, and each ladder member 182 is a power source (not shown). It is operated so that its length becomes longer as it is unfolded or becomes shorter as it is folded.

And, as anyone can see, the expansion ladder assembly 180 is undulated in the vertical direction by the relief cylinder 184, and a bogie 186 that moves along the deployed ladder member 182 is provided in the expansion ladder assembly 180 do.

Here, the connection relationship between the expansion and contraction ladder assembly 180, the relief cylinder 184, and the bogie 186 is a known technique in the art, so a detailed description thereof will be omitted.

On the other hand, each ladder member 182 is formed to receive less wind load while having the same strength as the existing ladder member expansion ladder member of the conventional ladder, for this purpose, each ladder member 182 has been applied for a patent by the present applicant and registered a patent. It is provided in the same manner as the booms disclosed in No. 10-0875145 and Patent Registration No. 10-0875146.

And the upper surface of each of the ladder members 182 on which the rollers (not shown) of the bogie 182 contact and travel is formed to have a convex curvature 188 cross-section as shown. Since the upper surface of the 182 is formed to have a cross section of the curvature 188, each of the ladder members 182 can be stretched and contracted without shaking, and it is possible to minimize friction when stretching and contracting.

In addition, the telescopic ladder assembly 180 is provided with a bogie moving device 190 and an auxiliary moving device 192 in order to prevent the risk of accidents such as the bogie 186 descending at a high speed or sudden descent or fall.

Here, the balance moving device 190 and the auxiliary moving device 192 are provided in the same manner as the balance moving device and auxiliary moving device disclosed in Patent No. 10-1250920 applied for and registered by the present applicant.

Since the leather car 100 for life-saving according to the present invention formed as described above supports the vehicle body 110 by turning the extension 150 corresponding to the length of the base frame 116 in the width direction of the vehicle body 110 Compared to the conventional ladder car, the support area can be significantly expanded, so that even if the new ladder assembly 180 is deployed to a height of 30 or more floors, the flow and overturn of the vehicle body 110 can be prevented.

In addition, the lifesaving leather car 100 according to the present invention is formed so as to have a convex curvature 188 on the upper surface of each ladder member 182 running in contact with the rollers of the bogie 182. The members 182 may expand and contract without shaking, and also minimize friction during stretching.

In the above, although specific embodiments of the present invention have been described and illustrated, the present invention is not limited to the described embodiments, and various modifications and variations can be made without departing from the spirit and scope of the present invention. It is self-evident to those who have. Therefore, such modifications or variations should not be individually understood from the technical spirit or viewpoint of the present invention, and the modified embodiments should be said to belong to the claims of the present invention.

100: lifesaving leather car 110: body
116: base frame 118: outrigger
120: safety device 121: operation part
122: first transfer assembly 124: first base rail
126: first movable rail 128: first power transmission means
140: turning table 150: extension
152: second transfer assembly 154: second base rail
156: second movable rail 160: second power transmission means
174: jack cylinder 180: expansion ladder assembly

Claims (8)

In a life-saving leather car having a vehicle body on which a cabin is installed on a front upper portion of the chassis frame and a base frame is installed on the chassis frame exposed to the rear of the cabin, and an extension ladder assembly that can be deployed to a height of 30 or more,
The life-saving leather car is mounted on the base frame and includes a safety device connecting the base frame and the new ladder assembly,
The safety device,
An extension part pivoting in the width direction of the vehicle body to form a support point in the width direction of the vehicle body to stably fix the vehicle body; And
Including; an operation unit for turning the expansion part in the width direction of the vehicle body during high place work and accommodating the expansion part into the base frame when the vehicle body travels,
A lifesaving leather car with a distance between the support points formed by the expansion unit in the width direction of the vehicle body corresponding to the length of the base frame.
The method according to claim 1,
The operation unit,
A turning table on which the extension part is mounted; And
Includes; a first transfer assembly for moving the extended portion mounted on the turning table so as to be pivoted in the width direction of the vehicle body,
The first transfer assembly,
A pair of first base rails formed side by side;
A first movable rail formed in a pair and movably mounted on the first base rail; And
Including; first power transmission means for moving the first movable rail along the first base rail,
The first base rail is fixedly installed at the center of the upper surface of the base frame, the first base rail and the first movable rail have a length extending from the front of the base frame to the rear of the base frame,
The turning table,
A lifesaving leather car installed on the first movable rail to connect the upper surfaces of the central portion of the pair of first movable rails to each other.
The method according to claim 2,
The first power transmission means,
A first driving motor fixed to a rear surface of the base frame and an upper surface of the base frame connected between the pair of first base rails;
A first driving sprocket coupled to the rotating shaft of the first driving motor;
A first driven sprocket fixed to an upper surface of the base frame connected to the front of the base frame and coupled to a bracket fixed between the pair of first base rails; And
Including; a first chain supported by the first driving sprocket and the first driven sprocket to rotate,
Any one point of the first chain is a lifesaving leather car that is coupled to any one first support bar connecting between a pair of the first movable rails.
The method according to claim 2,
The extension part,
A plurality of jack cylinders forming the support points in the width direction of the vehicle body; And
A second transfer assembly on which the telescopic ladder assembly is mounted and guides the jack cylinders in the width direction of the vehicle body during high place work and guides the jack cylinders to be accommodated into the base frame when the vehicle body travels; Includes,
The second transfer assembly,
A pair of second base rails formed side by side;
A second movable rail formed in a pair and movably mounted on the second base rail; And
Including; a second power transmission means for moving the second movable rail along the second base rail,
The central portion of the second base rail is fixedly installed on the turning table, the second base rail and the second movable rail are provided with a length equal to the length of the first base rail and the first movable rail,
A lifesaving leather car in which a support body is installed on an upper surface of the front side of the second movable rail so that the bottom of the orbiting ladder assembly is supported so as to be pivotable in the vertical direction.
The method of claim 4,
The second power transmission means,
A second driving motor fixed to a rear surface of the support panel connecting between the pair of second base rails and an upper surface of the support panel;
A second driving sprocket coupled to the rotation shaft of the second driving motor;
A second driven sprocket coupled to a bracket fixed to an upper surface of the support panel connected to the front of the support panel; And
Including; a second chain supported by the second driving sprocket and the second driven sprocket to rotate,
Any one point of the second chain is a life-saving leather car coupled to a second support bar that connects between a pair of the second movable rails.
The method of claim 4,
The jack cylinders,
A lifesaving leather car that is installed on both front and rear sides of the second movable rail so that the rod with the supporting plate in close contact with the ground can be extended toward the ground.
The method according to claim 2,
On both front sides of the first base rail, vertical plate-shaped guards that prevent rotation of the extension portion accommodated in the base frame when the vehicle body travels are formed to extend vertically from the base frame.
The method according to claim 1,
A lifesaving leather car formed to have a convex curvature cross-section on an upper surface of each of the ladder members constituting the expansion-contracting ladder assembly, in which the rollers of the bogie moving along the ladder member contact and travel.

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