KR20090063626A - Apparatus to protect impact for work-bench elevated position - Google Patents

Apparatus to protect impact for work-bench elevated position Download PDF

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Publication number
KR20090063626A
KR20090063626A KR1020070131070A KR20070131070A KR20090063626A KR 20090063626 A KR20090063626 A KR 20090063626A KR 1020070131070 A KR1020070131070 A KR 1020070131070A KR 20070131070 A KR20070131070 A KR 20070131070A KR 20090063626 A KR20090063626 A KR 20090063626A
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KR
South Korea
Prior art keywords
lower frame
frame
upper frame
handrail
work
Prior art date
Application number
KR1020070131070A
Other languages
Korean (ko)
Inventor
우종길
Original Assignee
우종길
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 우종길 filed Critical 우종길
Priority to KR1020070131070A priority Critical patent/KR20090063626A/en
Publication of KR20090063626A publication Critical patent/KR20090063626A/en

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Classifications

    • 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)
  • Forklifts And Lifting Vehicles (AREA)

Abstract

An impact protecting apparatus of a work-bench at an elevated position is provided to easy usability according to need by installing a foldable lower frame with a hinge conveniently. An impact protecting apparatus(100) of a work-bench at an elevated position includes a lower frame(120), an upper frame(140), a shock-absorbing member(160), and a limit switch(180). The lower frame is fixed on the top of a railing of the work-bench. The upper frame is installed according to railing of the work-bench. The shock-absorbing member is operated by elastic force of a spring, and combined between the lower frame and the upper frame. The upper frame is comprised of a middle member(142) and a fixing member(144). The middle member is installed at an upper side of the lower frame. The fixing member is combined on both ends of the middle member, or separated from the both ends of the middle member.

Description

Stenosis preventer for aerial platforms {Apparatus to protect impact for work-bench elevated position}

The present invention relates to a stenosis prevention device that can safely work at a high place using an aerial platform, specifically, for the aerial platform to facilitate the removal and reinstallation of the stenosis prevention device for the top of the railing of the platform It relates to a stenosis prevention device.

In general, aerial platform is used for the construction of high ceiling plumbing, ducts, lighting, and painting of high buildings, plastering, equipment, etc., are divided into various types such as straight type, refractive type.

Looking at such various types of aerial work platform, as shown in Figure 1, the trolley 10, which is moved and supported greatly, the lifting unit 20 operating by hydraulic pressure in the state installed on the upper end of the trolley and the upper end of the elevating unit It is divided into the worktable 30 installed in.

However, according to such an aerial platform, safety accidents occur frequently and largely because safety devices are not provided at the top of the platform. That is, in the process of operating the operation unit to elevate the work platform, the top of the railing of the work table often occurs due to the operator's carelessness, which is very dangerous because the structure may be severely damaged. In particular, safety accidents frequently occur when a worker on a work platform is caught between a railing and a structure and is injured or killed.

Accordingly, the present applicant has provided a stenosis prevention device installed on the railing of the workbench to immediately stop the operation of the lift unit when a stenosis accident occurs. Such a stenosis prevention device is formed to be fixed to the upper end of the railing of the workbench. frame; An upper frame formed to be installed along a railing of a work table spaced apart from the lower frame by a predetermined distance: a cushioning means coupled between the lower frame and the upper frame and configured to operate a predetermined distance up and down by an elastic force of a spring; And a limit switch interlocked with the buffer means to block the operation of the lift unit when the upper frame is lowered by a crimp or collision.

The stenosis prevention device for aerial platform of the present invention is to solve the problem that the removal and reinstallation of the stenosis prevention device from the top of the railing of the conventional platform is inconvenient and difficult.

The present invention is a lower frame formed to be fixed to the top of the handrail of the aerial platform, the upper frame formed to be installed along the railing of the workbench at a predetermined distance from the lower frame, coupled between the lower frame and the upper frame elastic force of the spring In the anti-stenosis device comprising a buffer means formed to operate by a certain distance up and down by a limit switch and a limit switch formed to block the operation of the lifting unit when the upper frame is lowered by the crimping or collision in conjunction with the buffer means,

The lower end of the lower frame is seated in close contact with the front and rear upper end of the workbench, respectively, the outer surface of the lower frame and the outer surface of the handrail is installed to be connected to the hinge to fold outward, while the upper frame is It consists of an intermediate member which is respectively installed on the upper side of the lower frame and a fixing member bent in a "c" form to be separated or combined from each of the left and right ends of the intermediate member.

In addition, both sides of each of the lower frame axially coupled to the eccentric folding prevention piece to be rotatable, when the eccentric both ends are rotated in the lower direction by the self-supporting both sides of the handrail in close contact with the lower frame on the top of the railing When it is rotated upward or more than at right angles, the eccentric both ends are formed to release the support for both sides of the handrail so that the lower frame is folded by the hinge.

According to the narrowing prevention device for aerial platform according to the present invention, the front and rear of the upper frame is formed to be separated, and the railing of the workbench and the lower frame installed at the upper end thereof are configured to be folded by the hinges. Not only does it have a very useful effect that can be easily removed and reinstalled from the top of the anti-stenosis device, but it is also more convenient and easy to use.

A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view showing the stenosis prevention device for aerial platform applied to the present invention, Figure 3 is a state diagram showing the stenosis prevention device for aerial platform applied to the present invention, Figure 4 is a aerial platform stenosis applied to the present invention Figure 5 is another state of use showing the prevention device, Figure 5 is a cross-sectional view of the AA line showing the stenosis prevention device for aerial platform, the present invention is applied, Figure 6 is a sectional view showing the operation of Figure 4, Figure 7 Sectional drawing of the BB line | wire which shows the stenosis prevention device for work benches.

The stenosis prevention device 100 for the aerial platform of the present invention is installed in the front and rear rails of the work platform 30 as shown in FIGS. The upper frame 140 is fitted to the left and right ends of the intermediate member 142 installed on the upper side of the frame by the fixing member 144, the buffer means 160 is coupled between the lower frame and the upper frame in conjunction with the buffer means The limit switch 180 is formed to block the operation of the lifting unit 20.

Thus, the lower frame 120 is formed in the form of a pipe so that the lower end is installed in close contact with the top of the railing of the worktable (30). At this time, the lower frame is preferably installed in the longitudinal direction on the front and rear handrails of the work table 30, as shown in FIG.

In addition, the top surface of the handrail of the work table 30 and the outer surface of the lower frame 120 are fixed to the hinge 200 to form the lower frame 120 to be folded outward from the handrail. At this time, it is safe to combine two or more hinges from side to side.

On the other hand, both sides of each of the lower frame 120 is axially coupled to the eccentric folding prevention piece 300 to be rotatable. At this time, the anti-folding piece 300 on both sides is fixed to the same axis to be rotated at the same time while having a constant thickness and rigidity so as not to be easily folded or folded against the force to push the lower frame 120 to the outside. .

Therefore, when the anti-fold piece 300 is rotated in the lower direction by its own weight, both ends of the eccentric support the two sides of the handrail closely to fix the lower frame 120 to the top of the handrail, and rotated upward or more at right angles When the eccentric both ends to release the support for both sides of the handrail so that the lower frame 120 is folded out by the hinge 200.

The upper frame 140 is installed in a rectangular frame shape along the railing of the work table 30 in a state spaced apart from the lower frame 120 by a predetermined interval upward, thereby to impact the structure against the entire upper end of the work table (30). Make it detectable.

At this time, the upper frame 140 is configured to be able to adjust the left and right length according to the size of the work table 30, and to separate the left and right as needed. That is, the upper frame 140 is a pair of fixing members 144 bent in a "c" shape to be coupled to each other by inserting a pair of intermediate members 142 and left and right ends of the intermediate member 142 formed to face back and forth. ). In this case, the pair of intermediate members 142 are provided in a state of being integrally installed by the lower frame 120 and the buffer means 160 described later, the fixing member 144 is the lower frame ( 120 and independent of the buffer means (160).

In this configuration, a plurality of coupling holes 144a are formed at equal intervals in the coupling portion of the fixing member 144, and the coupling portion of the intermediate member 142 is inserted into the coupling sphere 144a through rotation. It forms a control bolt 142a formed to fill or loosen. Therefore, in the state in which the adjustment bolt 142a of the intermediate member 142 is loosened, the fixing member 144 can be moved forward and backward to adjust the length appropriately, or the lower frame 120 can be separated to fold outward of the railing. have.

On the other hand, at both bending points of the fixing member 144 to form a rotating shaft 146 to be easily folded and stored.

The buffer means 160 is coupled between the lower frame 120 and the upper frame 140 is formed to operate a predetermined distance up and down by the elastic force of the spring 164. That is, when the upper frame 140 installed on the work table 30 inadvertently collides with the structure, it is possible to prevent damage to the structure or the work table 30 while buffering the shock by the buffer means 160, Even if the worker is sandwiched between the structure and the upper frame 140 to prevent the pressure injection by the buffer.

At this time, a preferred embodiment as the buffer means 160 is a link 162 of the plurality of points connecting the lower frame 120 and the upper frame 140, as shown in the figure, the lower frame 120 and the upper It is composed of a spring 164 formed to raise the upper frame by the elastic force in the state in which the frame 140 is connected, and a stopper 166 formed to limit the rotation of the link 162.

That is, the link 162 is formed to have a predetermined length, and both ends thereof are formed at a plurality of points in a state in which both ends thereof are axially coupled to the lower frame 120 and the upper frame 140, respectively. Therefore, the upper frame 140 is a lifting operation is performed while maintaining a horizontal state without the phenomenon inclined to one side by the operation of a plurality of links (162).

In addition, the spring 164 pulls up the upper frame 140 connected to the link 162 by an elastic force that contracts by coupling both ends thereof to the lower frame 120 and the upper frame 140, respectively. . In other words, the contracting force of the spring 164 acts opposite to the rotation direction of the link 162.

In addition, the stopper 166 is formed to limit the link 162 rotated by the elastic force of the spring 164. That is, by limiting the rotation of the link 162 so as not to stand up completely, when the pressure or collision occurs in the upper frame 140, a smooth buffering action is always made only in one direction. Therefore, the stopper 166 is preferably formed to be bent in the form of "b" on the lower frame 120 so that the ends bent horizontally limit the link 162 rotated by the elastic force of the spring 164.

The limit switch 180 is formed so as to block the operation of the lifting unit 20 when the upper frame 140 is lowered by the compression or collision in conjunction with the buffer means (160). That is, the limit switch 180 is installed to operate the switch by the rotation of the link 162 or the lifting of the upper frame 140, as shown in FIG. Therefore, the operation of the hydraulic cylinder for operating the lifting unit 20 at the same time as the operation of the limit switch 180 is to be prioritized to block other operations.

On the other hand, between the lower frame 120 and the upper frame 140 protrudes the pinch preventing jaw 122 to prevent the worker's hand or foot is caught. That is, the upper frame 140 is protruded on the lower frame 120 or the upper frame 140 so as to prevent the upper frame 140 and the lower frame 120 and the link 162 from being in close contact with each other. Pressing prevents an accident from being caught by a worker's hand or foot.

Therefore, according to such a configuration, the upper frame 140 may be prevented from being damaged when colliding with the structure by being buffered by the buffer means 160 at a predetermined distance, and even if a person is caught between the structure and the work table 30. It is possible to prevent personal accidents such as indentation.

Of course, the cushioning action of the upper frame 140 occurs at the same time, the limit switch 180 is operated to prevent the deterioration of the accident by first blocking the operation of the lifting unit 20.

In addition, by using only the fixing member 144 of the upper frame 140 for convenience of use, or by rotating the folding fixing piece 300, the lower frame 120 by the hinge 200 to the outside of the railing. By rotating, the anti-stenosis device 100 can be completely removed from the railing upper side of the work table 30.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a perspective view showing a conventional aerial platform.

Figure 2 is an exploded perspective view showing a narrowing prevention device for aerial platform to which the present invention is applied.

Figure 3 is a use state showing the stenosis prevention apparatus for aerial platform to which the present invention is applied.

Figure 4 is another use state showing the stenosis prevention apparatus for aerial platform to which the present invention is applied.

Figure 5 is a cross-sectional view taken along line A-A showing a narrowing platform for aerial platform to which the present invention is applied.

6 is a cross-sectional view showing the operation of FIG.

Figure 7 is a cross-sectional view taken along line B-B showing a narrowing platform for aerial platform to which the present invention is applied.

<Brief description of symbols for the main parts of the drawings>

10: balance 20: lift

30: working table

100: stenosis prevention device

120: lower frame 122: jamming jaw

140: upper frame 142: intermediate member

142a: adjusting bolt 144: fixing member

144a: coupler 146: hinge

160: buffer means 162: link

164: spring 166: stopper

180: limit switch

200: hinge 300: folding prevention piece

Claims (2)

Lower frame formed to be fixed to the top of the platform of the aerial platform, upper frame formed to be installed along the railing of the workbench at a predetermined distance from the lower frame, is coupled between the lower frame and the upper frame up and down by the elastic force of the spring In the anti-stenosis device comprising a shock absorbing means formed to operate a predetermined distance and the limit switch formed in conjunction with the shock absorbing means to block the operation of the lifting unit when the upper frame is lowered by pressing or crashing, While the lower end of the lower frame is seated in close contact with the front and rear upper end of the workbench, respectively, the outer surface of the lower frame and the outer surface of the handrail are installed to be connected to the hinge and folded outwards, The upper frame is formed of an intermediate member respectively installed on the upper side of the lower frame and the anti-skid working platform, characterized in that consisting of a fixed member bent in a "c" shape to be separated or combined from each of the left and right ends of the intermediate member. Device. According to claim 1, wherein both sides of each of the lower frame is axially coupled to the eccentric fold preventive piece, when the eccentric both ends when rotated in the lower direction by the weight of the handrail to closely support both sides of the handrail The lower frame is fixed to the upper end, and when rotated upwards at right angles or more, the eccentric both ends are released to release the support for both sides of the handrail, characterized in that the lower frame is formed to be folded by the hinge Surrogate stenosis prevention device.
KR1020070131070A 2007-12-14 2007-12-14 Apparatus to protect impact for work-bench elevated position KR20090063626A (en)

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Application Number Priority Date Filing Date Title
KR1020070131070A KR20090063626A (en) 2007-12-14 2007-12-14 Apparatus to protect impact for work-bench elevated position

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Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366655A1 (en) * 2010-03-15 2011-09-21 René Altena Aerial work platform
GB2481709A (en) * 2010-07-02 2012-01-04 Blue Sky Access Ltd Load sensitive safety device for an aerial lift
KR101629707B1 (en) 2015-06-25 2016-06-13 한국종합렌탈 주식회사 Separate Safety Unit of Aerial Work Platforms
WO2017178737A1 (en) 2016-04-15 2017-10-19 Haulotte Group Aerial-lift working-platform control desk with protection against crushing of the operator
CN108178109A (en) * 2017-12-25 2018-06-19 河海大学常州校区 A kind of Special Automatic vibration damping absorbing workbench of high-altitude operation vehicle
CN108249371A (en) * 2018-01-08 2018-07-06 河海大学常州校区 A kind of aerial work platform three-dimensional automatic vibration reduction working bucket
KR20180104412A (en) * 2017-03-13 2018-09-21 김연한 Compression protect device of lift for workers
KR102039508B1 (en) * 2019-08-16 2019-11-04 (주)이엘렌탈 Apparatus for prevention narrowness of high-place workbench
FR3091524A1 (en) 2019-01-09 2020-07-10 Haulotte Group Lifting platform with removable control console including operator crush protection

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366655A1 (en) * 2010-03-15 2011-09-21 René Altena Aerial work platform
GB2481709A (en) * 2010-07-02 2012-01-04 Blue Sky Access Ltd Load sensitive safety device for an aerial lift
GB2481709B (en) * 2010-07-02 2014-12-24 Bluesky Solutions Ltd Aerial lift with safety device
KR101629707B1 (en) 2015-06-25 2016-06-13 한국종합렌탈 주식회사 Separate Safety Unit of Aerial Work Platforms
US11401148B2 (en) 2016-04-15 2022-08-02 Haulotte Group Aerial-lift working-platform control desk with protection against crushing of the operator
WO2017178737A1 (en) 2016-04-15 2017-10-19 Haulotte Group Aerial-lift working-platform control desk with protection against crushing of the operator
KR20180104412A (en) * 2017-03-13 2018-09-21 김연한 Compression protect device of lift for workers
CN108178109A (en) * 2017-12-25 2018-06-19 河海大学常州校区 A kind of Special Automatic vibration damping absorbing workbench of high-altitude operation vehicle
CN108178109B (en) * 2017-12-25 2019-10-25 河海大学常州校区 A kind of Special Automatic vibration damping absorbing workbench of high-altitude operation vehicle
CN108249371A (en) * 2018-01-08 2018-07-06 河海大学常州校区 A kind of aerial work platform three-dimensional automatic vibration reduction working bucket
FR3091524A1 (en) 2019-01-09 2020-07-10 Haulotte Group Lifting platform with removable control console including operator crush protection
WO2020144601A1 (en) 2019-01-09 2020-07-16 Haulotte Group Aerial lift with removable control console, comprising a protection device for preventing the operator from being crushed
KR102039508B1 (en) * 2019-08-16 2019-11-04 (주)이엘렌탈 Apparatus for prevention narrowness of high-place workbench

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