KR101615107B1 - Do aboard structure - Google Patents

Do aboard structure Download PDF

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Publication number
KR101615107B1
KR101615107B1 KR1020150144610A KR20150144610A KR101615107B1 KR 101615107 B1 KR101615107 B1 KR 101615107B1 KR 1020150144610 A KR1020150144610 A KR 1020150144610A KR 20150144610 A KR20150144610 A KR 20150144610A KR 101615107 B1 KR101615107 B1 KR 101615107B1
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KR
South Korea
Prior art keywords
frame
sub
upper portion
axially coupled
fixing
Prior art date
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KR1020150144610A
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Korean (ko)
Inventor
이근하
인인교
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주식회사 금명특장
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Priority to KR1020150144610A priority Critical patent/KR101615107B1/en
Application granted granted Critical
Publication of KR101615107B1 publication Critical patent/KR101615107B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
    • B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/006—Safety devices, e.g. for limiting or indicating lifting force for working platforms

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The present invention relates to a boarding container structure. One side frame, the other side frame, and a rear side frame are respectively rotated and moved toward an upper side of the floor frame to be folded flat. Therefore, a volume of a boarding container can be more easily minimized, thereby being easily transported and stored in a small space. Moreover, an area of the floor frame can be increased to significantly improve work efficiency of a worker.

Description

Do aboard structure < RTI ID = 0.0 >

In the present invention, one side frame, the other side frame and the rear side frame can be rotated and folded flatly in the upper direction of the floor frame, so that the volume of the boarding compartment can be more easily minimized, And the area of the floor frame can be widened, so that the work efficiency of the operator can be greatly improved.

In general, a high altitude work device is required to operate at a height outside of the general ladder height limits, such as repair work of an overpass, painting repair work, repair work on a high-rise structure such as an apartment, It is a device that can be used very appropriately.
Such a high-level work device can be classified into a boom type, a scissors type, and an X type.
In the boom-type high-performance working apparatus, each boom inserted and connected in multiple stages is configured to be pulled out or accommodated in accordance with a change in length of a piston rod of a cylinder operated according to hydraulic control, The boom has a structure in which a worker boarding a car or a boarding car on which a cargo is mounted.
The cabin provided at the tip of the final boom generally has a rectangular plate-shaped bottom plate having a predetermined size, a rear plate welded to the bottom plate at a predetermined height from the rear end thereof, And a front plate having a predetermined height hinged to be vertically pivoted on the front end of the bottom plate. Recently, the size of the inner space of the cabin has been changed from a working height or a cargo height The structure of the platform of the elevating device is shown in Korean Registered Utility Model Registration No. 20-0315891 so as to increase the working efficiency and greatly improve the safety of the worker.
However, in the case of the Korean Registered Utility Model Registration No. 20-0315891 (the structure of the cabin of the high altitude operation device), the cabin can not be folded flat, so that it is difficult to minimize the volume of the cabin, And difficulty in storage in a narrow place.

Korean Registered Utility Model Registration No. 20-0315891

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a foldable type And it is an object of the present invention to provide a passenger compartment structure that can be easily transported and stored in a narrow place, and can further enlarge the area of the floor frame, thereby greatly improving the work efficiency of an operator .

According to an aspect of the present invention, A first side frame on which a lower portion is axially coupled to one side of the bottom frame, a second side frame on which a lower portion is axially coupled to an upper portion of the first side frame, A side frame which is composed of a third side frame and turns and folds in an upward direction of the bottom frame; A second frame which is axially coupled to the upper portion of the first frame, and a second frame which is coupled to the upper portion of the second frame, A second frame formed of three other frames and folded and rotated in an upward direction of the bottom frame; A first rear frame formed on a rear side opposite to a front side of the floor frame and a second rear frame coupled to an upper portion of the first rear frame so as to be rotatably folded upward, And a rear side frame (10).

Here, the auxiliary frame is provided to the one frame, the other frame, and the rear frame, and the upper frame moves up and down with respect to the lower frame in a state where the lower frame is coupled to the upper portion of the third frame A first auxiliary frame; A second subframe in which the upper portion rotates upward and downward with respect to the lower portion in a state where the lower portion is axially coupled to the upper portion of the third other frame; A third auxiliary frame having one side of the second rear frame and the other side of the second rear frame being pivotally moved in the left and right direction with respect to the other side; And a fourth auxiliary frame, the other side of which is pivotally moved with respect to one side in a state where one side is axially coupled to the other side of the second rear side frame.

The front frame includes a front frame on the front side of the bottom frame, a first front frame on which the bottom is axially coupled to the front side of the bottom frame, and the top side rotates up and down with respect to the bottom; A second front frame having one side of the first front frame and the other of the first front frame and the second front frame; And a third front side frame having one side of the first front side frame and the other side of the first front side frame being pivotally moved relative to the other side of the first front side frame.

A fixing part for connecting and fixing one side of the rear side opposite to the front side of the third side frame and one side of the second rear side frame and for connecting and fixing the rear side opposite to the front side of the third side frame and the other side of the second rear side frame; .

Here, the fixing portion is formed on the rear side of the third side frame and the side of the second rear side frame, and is formed on the other side of the rear side of the third side frame and the second side frame, and; And a fixing member fixed to the fixed frame through the fixing frame.

In addition, the first side frame, the second side frame, the first side frame and the second side frame are respectively rotated and moved horizontally in one direction of the bottom frame and the other side of the bottom frame, The upper part of the first sub frame and the upper part of the second sub frame are respectively rotated and moved vertically to the upper direction of the third one side frame and the upper direction of the third other side frame, The other side of the sub frame is rotatably moved in the direction of the third side frame and the third side frame and is vertically unfolded, the rear side opposite to the front side of the first sub frame and the one side of the third sub frame are connected and fixed And a fixing part for connecting and fixing the rear side of the second sub frame opposite to the front side and the other side of the fourth sub frame desirable.

The fixing portion is formed on the rear side of the first sub frame and the one side of the third sub frame and contacted with each other. The fixing portion is formed on the other side of the rear side of the second sub frame and the fourth sub frame, and; And a fixing member fixed to the fixed frame through the fixing frame.

It is preferable that a seat frame for seating the second front frame and the third front frame on the front side of the second side frame and the front side of the second side frame is formed.

In the present invention, one side frame, the other side frame and the rear side frame provided on one side, the other side and the rear side of the floor frame can be folded flat and rotated in the upward direction of the floor frame, It is, of course, advantageous in that it is easy to carry and store in a narrow place, and the area of the floor frame can be widened so that a large amount of cargo can be loaded on the floor frame, So that the working efficiency can be greatly improved.

1 is a perspective view schematically showing a passenger compartment structure, which is an embodiment of the present invention,
Fig. 2 is a front view of Fig. 1,
3 is a partially enlarged and separated perspective view schematically showing a state in which the fixing member is separated from the fixed frame,
Figs. 4 to 8 are perspective views sequentially showing the process of widening the total area of the bottom frame,
9 to 12 are perspective views sequentially showing a process in which one frame, the other frame, the rear frame, and the front frame are respectively rotated and folded in the upward direction of the floor frame,
13 is a perspective view schematically showing an unfolding prevention frame,
FIG. 14 is a side view schematically showing a state where a riding platform is connected to an extension connected to a crane main body.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. It is to be understood that the scope of the present invention is not limited to the following embodiments, and various modifications may be made by those skilled in the art without departing from the technical scope of the present invention.

Fig. 1 is a perspective view schematically showing a boarding structure, which is an embodiment of the present invention, and Fig. 2 is a front view of Fig. 1. Fig.

1 and 2, a cabin structure, which can be installed in a vehicle such as a crane, a high-altitude work vehicle, and a specially equipped vehicle, includes a bottom frame 10, a frame 20, (30) and a rear frame (40).
The first frame 20, the second frame 30, and the rear frame 40 are provided on one side, the other side, and the rear side of the floor frame 10, respectively.
On the upper part of the floor frame 10, a foot plate 9 on which a worker can stand can be provided horizontally in various ways such as a bolt fixing.
Next, the one side frame 20 is composed of first, second and third side frames 210, 220 and 230.
The lower portion of the first side frame 210 is axially coupled to one side of the bottom frame 10.
The lower part of the second side frame 220 is axially coupled to the upper side of the first side frame 210.
The lower portion of the third side frame 230 is axially coupled to the upper side of the second side frame 220.
The foot plate 9 may be fixed to the other side opposite to the one side of the first and second side frames 210 and 220 and the lower side opposite to the one side of the third side frame 230, .
Next, the other frame 30 is composed of first, second and third frames 310, 320 and 330.
The lower portion of the first other frame 310 is axially coupled to the other side of the bottom frame 10.
The lower portion of the second frame 320 is axially coupled to the upper portion of the first frame 310.
The lower portion of the third frame 330 is axially coupled to the upper portion of the second frame 320.
One side of the first and second frames 310 and 320 and one side of the lower side of the third frame 330 may be vertically installed in various ways such as bolts and the like.
Next, the rear frame 40 is composed of first and second rear frames 410 and 420.
The first rear frame 410 is vertically formed on the rear side opposite to the front side of the floor frame 10.
And the foot plate 9 may be vertically provided in various ways such as bolt fixing on the front side of the first rear frame 410. [
The lower portion of the second rear frame 420 is axially coupled to the upper portion of the first rear frame 410.
Next, an auxiliary frame 50 may be provided on the one side frame 20, the other side frame 30, and the rear side frame 40, respectively.
The auxiliary frame 50 may include first, second, third, and fourth auxiliary frames 510, 520, 530, and 540.
The lower portion of the first auxiliary frame 510 is axially coupled to the upper portion of the third one side frame 230.
The lower portion of the second auxiliary frame 520 is axially coupled to the upper portion of the third other frame 330.
The other side of the third auxiliary frame 530 is axially coupled to one side of the second rear frame 420.
One side of the fourth sub-frame 540 may be axially coupled to the other side of the second rear frame 420.
Next, the front frame 60 may be provided on the front side of the bottom frame 10. [
The front frame 60 may include first, second and third front frames 610, 620 and 630.
The lower portion of the first front side frame 610 may be axially coupled to the front side of the bottom frame 10.
The other side of the second front frame 620 may be axially coupled to one side of the first front side frame 610.
One side of the third front side frame 630 may be axially coupled to the other side of the first front side frame 610.
The foot plate 9 may be vertically provided in various ways such as bolt fixing to the rear side opposite to the front side of the first, second and third front frames 610, 620 and 630.

3 is a partially enlarged and separated perspective view schematically showing a state in which the fixing member is separated from the fixed frame.

Next, as shown in FIGS. 1 to 3, a rear side of the third side frame 230 opposite to the front side and a side of the second rear side frame 420 are connected and fixed to each other, And a fixing part 70 for connecting and fixing the rear side of the opposite side of the front side and the other side of the second rear side frame 420 to each other.
As shown in FIG. 3, the fixing unit 70 may include a fixing frame 710 and a fixing member 720.
The fixed frame 710 may be formed in a tubular shape such as a square tube or a plate shape.
The fixed frame 710 may be formed on an upper portion of the rear side of the third side frame 230 and an upper side of the second side frame 420, and may be in surface contact with each other.
The fixed frame 710 may be formed on the rear side of the third side frame 330 and the other side of the second side frame 420, and may be in surface contact with each other.
The fixing member 720 may include a fixed shaft inserted and fixed to the fixed frame 710 in a state of passing through the center of the fixed frame 710 or fixed in a state of being screwed to the center of the fixed frame 710 And a fixing bolt.

Figs. 4 to 8 are perspective views sequentially showing a process of widening the total area of the bottom frame. Fig.

4, the first side frame 210, the second side frame 220, the first side frame 310, and the second side frame 320 are fixed by the operator, Can be rotated and moved horizontally in one direction of the bottom frame 10 and the other side of the bottom frame 10.
5, the upper part of the first sub-frame 510 and the upper part of the second sub-frame 520 are moved by the operator in the upper direction of the third one side frame 230 and the upper side of the third side frame 230, The first and second auxiliary frames 510 and 520 may be vertically rotated by rotating in the upward direction of the frame 330.
6, one side of the third sub-frame 530 and the other side of the fourth sub-frame 540 are connected to the rear side of the third side frame 230 and the rear side of the third side frame 230 by the operator, The third and fourth auxiliary frames 530 and 540 can be vertically unfolded.
6, a rear upper portion of the first auxiliary frame 510 opposite to the front side and an upper portion of one side of the third auxiliary frame 530 are connected and fixed to the front side of the second auxiliary frame 520, And the fixing part 70 for connecting and fixing the upper part of the rear side on the opposite side and the upper part of the other side of the fourth auxiliary frame 540.
The fixing frame 710 of the fixing portion 70 may be formed on the upper rear portion of the first auxiliary frame 530 and the upper portion of one side of the third auxiliary frame 530 and may be in surface contact with each other.
The fixed frame 710 of the fixing portion 70 may be formed on the rear upper portion of the second auxiliary frame 520 and the other upper portion of the fourth auxiliary frame 540 so as to be in surface contact with each other.
The fixing member 720 of the fixing part 70 may be fixed to the fixing frame 710 through the center of the fixing frame 710.
7, one side of the second front frame 620 of the front side frame 60 and the other side of the third front side frame 630 are connected to one side of the first front side frame 610 and the other side of the first front side frame 610, So that the second and third front frames 620 and 630 can be vertically unfolded, respectively.
8, the upper portion of the front frame 60 is rotated by the operator in a downward direction of the front frame 60, so that the front frame 60 can be horizontally unfolded.
Next, one side of the second front frame 620 and the other side of the third front side frame 630, which are horizontally expanded, are rotated and moved downwardly of the second and third front frames 620 and 630, respectively 1, 6, and 7, the front side of the second side frame 220 and the front side of the second side frame 320 include the second front frame 620 and the second side frame 320, 3, and a seat frame 80 for seating and supporting the front frame 630, respectively.
The seating frame 80 may be formed to extend longitudinally in a direction outside the front side of the second side frame 220 and toward the outside of the front side of the second side frame 320.
1, in order to prevent the upper portion of the front side frame 60, which is vertically folded, from rotating in a downward direction of the front side frame 60, One side of the front side frame 60 and the other side direction of the front side frame 60 may be bent to have a predetermined length and be in contact with one side of the front side frame 60 and the other side of the front side frame 60.
As shown in FIG. 8, the entire area of the floor frame 10 can be widened, so that a large amount of cargo can be loaded on the floor frame 10 and the working space of the worker can be raised on the floor frame 10 So that the working efficiency can be greatly improved.

9 to 12 are perspective views sequentially showing a process in which one frame, the other frame, the rear frame, and the front frame are rotated and folded in the upward direction of the floor frame, respectively.

9, one side of the second front frame 620 and the other side of the third front side frame 630 are rotated and moved by the operator in the direction of the first front side frame 610, respectively, The upper portion of the front frame 60 can be rotated in the upward direction of the bottom frame 10 so that the front frame 60 is folded in a state in which the front frame 60 is laid horizontally on the top of the bottom frame 10 .
10, the second and third frames 320 and 330 of the second frame 30 and the second sub frame 520 of the sub frame 50 are fixed to the floor frame 10 so as to be folded in a state of being laid horizontally on the front side frame 60 which is horizontally laid on the upper side of the bottom side frame 10.
11, the second and third side frames 220 and 230 of the one side frame 20 and the first auxiliary frame 510 of the auxiliary frame 50 are fixed to the floor frame 10 and the second and third frames 320 and 330 of the second frame 30 horizontally folded and the second sub frame 520 of the sub frame 50 are laid horizontally Folded state.
11, one side of the third auxiliary frame 530 of the auxiliary frame 50 and the other side of the fourth auxiliary frame 540 are connected to the second rear frame 420 of the rear frame 40 In the state of being rotated and folded by the operator in the direction of the arrow,
12, the upper portion of the second rear frame 420 of the rear frame 40 is rotated by the operator in the upper direction of the bottom frame 10, The second and third frames 220 and 230 of the frame 20 and the first auxiliary frame 510 of the auxiliary frame 50 can be folded in a lying state.
The second rear frame 420 of the rear frame 40 more smoothly rotates upward in the direction of the top of the bottom frame 10 so that the second rear frame 420 is rotated in the second, The length of the first one side frame 210 and the length of the first side frame 210 may be set so as to be easily laid on the third side frames 220 and 230 and the first sub frame 510 of the auxiliary frame 50, And the vertical length of the first rear frame 310 may be smaller than the vertical length of the first rear frame 410.
The one side frame 20, the other side frame 30 and the rear side frame 40 provided on one side and the other side and the rear side of the floor frame 10 are connected to the bottom side of the floor frame 10, It can be rotated and moved upwards to be flatly folded, so that the volume of the cabin can be further minimized, thereby facilitating transportation and storage in a narrow space.

13 is a perspective view schematically showing an unfolding prevention frame.

Next, in order to prevent the third and fourth auxiliary frames 530 and 540, which are rotated and folded by the operator in the direction of the two rear frames 420, from being unfolded, as shown in FIG. 13, The unfolding prevention frame 90 may be provided on one side of the upper side of the rear side frame 420 and on the other side of the upper side of the second side frame 420.
The rear side of the unfolding prevention frame 90 may be axially coupled to one side of the upper surface of the second rear frame 420 and the other side of the upper surface of the second rear side frame 420, respectively.
The front side of the unfolding prevention frame 90 may be formed to have a predetermined length in the upper direction of the unfolding prevention frame 90.
The front side of the unfolding prevention frame 90 can be rotated by the operator from the front side of the second rear side frame 420 to the rear side with respect to the rear side of the unfolding prevention frame 90. At this time, So that the upper portions of the third and fourth auxiliary frames 530 and 540 can be received inside the frame 90.

FIG. 14 is a side view schematically showing a state where a riding platform is connected to an extension connected to a crane main body.

As shown in FIG. 14, the floor frame 10 of the boarding compartment 1 of the present invention is fixed to the upper portion of the rear side of the extension base 100 to which the front side is connected at the end portion of the crane main body, And can be installed in various structures, such as being installed.

10; Floor frame, 20; One frame,
30; The other frame, 40; Rear frame.

Claims (8)

A floor frame;
A first side frame on which a lower portion is axially coupled to one side of the bottom frame, a second side frame on which a lower portion is axially coupled to an upper portion of the first side frame, A side frame which is composed of a third side frame and turns and folds in an upward direction of the bottom frame;
A second frame which is axially coupled to the upper portion of the first frame, and a second frame which is coupled to the upper portion of the second frame, A second frame formed of three other frames and folded and rotated in an upward direction of the bottom frame;
A first rear frame formed on a rear side opposite to a front side of the floor frame and a second rear frame coupled to an upper portion of the first rear frame so as to be rotatably folded upward, And a rear side frame.
The method according to claim 1,
Wherein the one frame, the other frame, and the rear frame have auxiliary frames,
A first sub frame having an upper portion rotatably moving up and down with respect to a lower portion of the third frame in a state where the lower portion is axially coupled to the upper portion of the third frame;
A second subframe in which the upper portion rotates upward and downward with respect to the lower portion in a state where the lower portion is axially coupled to the upper portion of the third other frame;
A third auxiliary frame having one side of the second rear frame and the other side of the second rear frame being pivotally moved in the left and right direction with respect to the other side;
And a fourth auxiliary frame having one side of the second rear frame axially coupled with the other side of the second rear frame, and the other side of the fourth auxiliary frame being rotated in the left and right direction.
The method according to claim 1,
A front frame is provided on the front side of the bottom frame,
The front frame includes a first front frame having an upper portion rotatably moving up and down with respect to a lower portion in a state where a lower portion is axially coupled to a front side of the bottom frame;
A second front frame having one side of the first front frame and the other of the first front frame and the second front frame;
And a third front frame, the other side of which is pivotally moved with respect to one side in a state where one side is axially coupled to the other side of the second front side frame.
The method according to claim 1,
And a fixing part for connecting and fixing a rear side of the third side frame opposite to the front side and a side of the second rear side frame, and a rear side opposite to the front side of the third side frame and a second side of the second rear side frame Wherein the passenger compartment structure is characterized in that:
5. The method of claim 4,
The fixing part being formed on the rear side of the third side frame and the side of the second rear side frame and contacting with each other and being formed on the other side of the rear side of the third side frame and the second side frame;
And a fixing member fixed to the fixed frame through the fixed frame.
3. The method of claim 2,
The first side frame, the second side frame, the first side frame and the second side frame are respectively rotated and moved horizontally in one direction of the bottom frame and the other side of the bottom frame,
The upper portion of the first sub-frame and the upper portion of the second sub-frame rotate and move vertically in the upper direction of the third side frame and the upper side of the third other side frame, respectively,
One side of the third sub frame and the other side of the fourth sub frame are respectively rotated and moved in the direction of the third side frame and the third side frame,
A fixing part for connecting and fixing the rear side of the first sub frame opposite to the front side of the first sub frame and the other side of the fourth sub frame opposite to the front side of the second sub frame, Wherein the passenger compartment structure is characterized in that:
The method according to claim 6,
The fixing unit includes: a fixed frame formed on a rear side of the first sub frame and one side of the third sub frame and contacting with each other and being formed on the other side of the rear side of the second sub frame and the fourth sub frame;
And a fixing member fixed to the fixed frame through the fixed frame.
The method of claim 3,
And a seating frame for seating and supporting the second front frame and the third front frame on the front side of the second side frame and the front side of the second side frame, respectively.
KR1020150144610A 2015-10-16 2015-10-16 Do aboard structure KR101615107B1 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180103529A (en) * 2017-03-10 2018-09-19 삼성중공업 주식회사 High place working device
KR102089649B1 (en) * 2019-10-24 2020-03-16 유봉상 Multi-directional expandable workbench
KR102230963B1 (en) 2019-09-25 2021-03-23 주식회사 호룡 Variable Type boarding box of high place works car
KR102321937B1 (en) 2021-04-30 2021-11-04 김동열 Device for preventing warpage of high place works car
KR102422434B1 (en) 2021-04-08 2022-07-19 김동열 Cylinder of high place works car and cylinder coating method
KR102652228B1 (en) 2023-04-12 2024-03-29 김상인 A cushion device for a riding basket of a high-place working vehicle
KR102684563B1 (en) 2024-04-04 2024-07-15 김상인 A cushion device for a riding basket of a high-place working vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101281327B1 (en) 2012-07-11 2013-08-02 박환성 A scaffold for horizontal supporting apparatus and having motor vehicles scaffold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101281327B1 (en) 2012-07-11 2013-08-02 박환성 A scaffold for horizontal supporting apparatus and having motor vehicles scaffold

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180103529A (en) * 2017-03-10 2018-09-19 삼성중공업 주식회사 High place working device
KR101954940B1 (en) * 2017-03-10 2019-03-06 삼성중공업 주식회사 High place working device
KR102230963B1 (en) 2019-09-25 2021-03-23 주식회사 호룡 Variable Type boarding box of high place works car
KR102089649B1 (en) * 2019-10-24 2020-03-16 유봉상 Multi-directional expandable workbench
KR102422434B1 (en) 2021-04-08 2022-07-19 김동열 Cylinder of high place works car and cylinder coating method
KR102321937B1 (en) 2021-04-30 2021-11-04 김동열 Device for preventing warpage of high place works car
KR102652228B1 (en) 2023-04-12 2024-03-29 김상인 A cushion device for a riding basket of a high-place working vehicle
KR102684563B1 (en) 2024-04-04 2024-07-15 김상인 A cushion device for a riding basket of a high-place working vehicle

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