KR102178186B1 - Expandable bucket safety handrail structure with foldable structure - Google Patents

Abstract

The present invention is configured in a form that surrounds the outside of an aerial workbench, aka a sky bucket, on which an operator boards for an aerial work, and prevents the operator from falling and the falling of the load, but is a work space where the operator is located in a state that is not removed. It relates to an expandable sky bucket safety railing structure having a foldable structure that can be partially opened and closed for entry and exit, as well as a change in size according to the expansion and reduction of the footrest part.

Description

Expandable bucket safety handrail structure with foldable structure

The present invention relates to a sky bucket safety railing structure, and in detail, it is configured in a form that surrounds the outside of an aerial platform, aka a sky bucket, on which an operator boards for high place work, to prevent the operator from falling and the falling of the load, but removal is possible. It relates to an expandable sky bucket safety railing structure having a foldable structure that can be partially opened and closed for access and loading and unloading and changing the size according to the expansion and reduction of the scaffolding part, which is the work space where the worker is located in the unused state.

For work at heights where ladders cannot be used, such as wall, glass work, signboard work, and other cargo lifting and lowering work of high-rise buildings and structures, aerial work platforms, so-called sky buckets, are used for work.

Such an aerial platform includes a rectangular floor plate having a predetermined size, a rear railing installed at a predetermined height from the rear end of the floor plate, and a left handrail and a right handrail installed on the left and right sides of the floor plate and the rear handrail. And, it is configured in a form in which the outside is surrounded by a front railing of a predetermined height that is hinged to the front end of the floor plate so as to be rotatable in the front and rear direction.

As for the aerial work platform of such a conventional structure, the left handrail and the right handrail are usually manufactured in a fixed form with respect to the floor plate and the rear handrail, so there is a problem that the working range is limited, and it is difficult to accommodate if the size of the mounted tool or cargo is large. As the work space is reduced, there is a problem that work efficiency is greatly reduced due to frequent movement of the aerial workbench.

Accordingly, an aerial work platform was developed that can expand the work space by configuring the left and right handrails and rear railings to be laid at the same height as the floor plate.In this case, the risk of falling of workers and loads increases as the handrails for safety disappear. A separate railing structure must be added according to the regulations.

However, such an additional handrail structure not only increases the weight of the aerial platform, but also has a structure that can be removed and opened as needed, so that it can be used without mounting during work in the removed state while driving or various inconveniences during work. For this reason, there was still a concern that a fall accident may occur during operation because it is used in combination in an open or incomplete state.

In particular, there is a high risk in the process of lifting heavy materials, such as attaching glass to the wall of a building or attaching marble, and the workbench shakes away from the target structure when moving a loaded heavy object while a worker is on board. As a condition occurs, the incomplete railing structure due to the expansion of the workbench has a problem that can lead to a major accident, and thus a safety railing of a more stable and sturdy structure is urgently required.

Registered Utility Model Publication No. 20-0315891 (2003.05.29)

The present invention was created to solve the above problems, and an object of the present invention is to prevent the falling of workers and loads from the front and rear and left and right in a form that completely surrounds the outside of the sky bucket, but with a structure in which removal is not made. It is to provide an expandable sky bucket safety railing structure having a foldable structure in which a size change corresponding to the expansion and reduction of the scaffolding is made and a partial opening is possible for loading and unloading.

For the above purposes, the present invention provides a safety railing structure for an aerial platform, the floor plate serving as a scaffold and forming a working space; A rear railing formed to have a predetermined height at the rear end of the floor plate; A pair of first double hinge portions each having a hinge that can rotate forward to one side and a hinge that can rotate rearward on the other side, each of which one hinge is coupled to both ends of the rear railing; A pair of first extension railings, one of which is coupled to the other hinge of the first double hinge, and having a length corresponding to the front and rear direction of the floor plate; A pair of second double hinge portions having the same structure as the first double hinge portion, wherein one hinge is coupled to the other end portion of the first expansion handrail; A pair of second extension railings, one of which is coupled to the other hinge of the second double hinge part; However, the first extension railing is erected at the left and right ends of the floor plate, and the second extension railing is erected at the front end of the floor plate to prevent falling.

In addition, a front railing hinged to be able to rotate vertically upward from a horizontal direction to the front end of the floor plate; A pair of side railings hingedly coupled to the left and right ends of the floor plate so as to be rotatable vertically upward from a horizontal direction, respectively, and having an extension part protruding to a length corresponding to the height of the front railing in a front end; Including, wherein the first extension railing is configured to have a length corresponding to the height of the side railing, is made of the same structure as the first double hinge, one hinge is the other end of the second extension railing A pair of third double hinge portions respectively coupled to each other; A pair of third extension railings, one of which is coupled to the other hinge of the third double hinge part; A pair of fourth double hinge portions having the same structure as the first double hinge portion, wherein one hinge is coupled to the other end portion of the third extension railing; A pair of fourth extension railings, one of which is coupled to the other hinge of the fourth double hinge part; It further comprises, wherein the front railing, the side railing, and the extension part are horizontal and the first extension railing is at the rear in a state where the work space is expanded, and the second extension railing and the third extension railing are left and right directions of the work space. At the end, the fourth extension railing may be erected at the front end of the working space to prevent dropping.

At this time, the third expansion railing is preferably configured to be coupled to the first folded portion and a second folded portion having a relatively shorter length than the first folded portion through a hinge formed to be foldable inward.

In addition, it is preferable that the fourth expansion railing is configured such that the third folding part and the fourth folding part divided into two parts are coupled through an auxiliary double hinge part having the same structure as the first double hinge part.

In addition, a locking means formed in the hinged portion to selectively limit the rotation of the hinge, and the front railing, the side railing, and the extension part are vertical, the working space is reduced, and the first extension railing is located on the left and right It further includes a fixing means for holding the second extension railing, the third extension railing, and the fourth extension railing to maintain an overlapping state in the front.

The present invention is a structure that cannot be removed by being integrated with a bucket, and expansion and contraction are made in response to expansion and contraction of the footrest, and fall is prevented around the outside, but when opening and closing for loading and unloading a load and not in use, it is moved and The volume can be reduced during storage, which can greatly improve work efficiency and safety.

1 is a perspective view according to the reduction of the working space according to an embodiment of the present invention,
2 is a plan view according to the reduction of the working space according to an embodiment of the present invention,
3 is a perspective view according to the expansion of the working space according to an embodiment of the present invention,
4 is a plan view according to the expansion of the working space according to an embodiment of the present invention,
5 is a perspective view of the front open state when the working space is expanded according to an embodiment of the present invention;
6 is a plan view of a state in which the front surface is opened when a working space is expanded according to an embodiment of the present invention.

Hereinafter, the structure of the expandable sky bucket safety railing structure having a folding structure according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view according to the reduction of the working space according to an embodiment of the present invention, Figure 2 is a plan view according to the reduction of the working space according to an embodiment of the present invention, and Figure 3 is a perspective view according to the expansion of the working space according to an embodiment of the present invention 4 is a plan view according to the expansion of the working space according to an embodiment of the present invention, FIG. 5 is a perspective view of a state in which the front side is opened when the working space is expanded according to an embodiment of the present invention, and FIG. 6 is according to an embodiment of the present invention. This is a plan view of the front open when the work space is expanded.

Basically, the sky bucket is provided with a floor plate 110 so that a worker can ride on the upper side or load cargo, and the height of the floor plate 110 is installed in an aerial vehicle under the floor plate 110 And it is configured to be able to maintain the horizontal during operation in a state in which the boom for position adjustment is connected.

Such a floor plate 110 is a generally rectangular aluminum plate and various types of frames for reinforcing loads are combined, and the front railing 130, the rear railing 120, and the side railing 140 are respectively on the front and rear left and right sides. It is formed to be configured to prevent the fall of the worker during high place work.

Specifically, a rear railing 120 is installed at the rear end of the floor plate 110 to have a predetermined height and a length corresponding to the left and right lengths of the floor plate 110. The predetermined height is an appropriate height that can prevent a worker from falling, according to regulations, and is usually manufactured at a height of 1 to 1.2 meters. The rear railing 120 may also be installed to be hinged to the floor plate 110 so that it can be erected vertically above the floor plate 110 from the same horizontal state as the floor plate 110, but for structural safety, the floor plate 110 ) It is preferable to be fixedly coupled vertically to the rear end.

The rear railing 120 may be made of a plate, but may be manufactured in a form in which one or more frames in the longitudinal and transverse directions are installed inside the square frame for structural reinforcement and weight reduction. A perforated plate or a mesh plate that can be prevented may be installed.

At this time, the first extension rail 150 and the second extension rail 160 are configured to be mutually rotatable to the left and right sides of the rear railing 120 in order to prevent falling from the left and right sides and the front It is configured such that it is possible to enter or leave the load, but the first extension rail 150 and the second extension rail 160 cannot be removed.

That is, the first extension railing 150 is formed to have a length corresponding to the front and rear direction of the floor plate 110 to prevent falling by blocking the left and right sides of the floor plate 110, respectively, and continuously coupled thereto. The second extension railing 160 blocks the front of the floor plate 110 to prevent it from falling.

For this structure, the second extension railing 160 has a length of 1/2 of the left and right length of the floor plate 110, but the second extension railing 160 on the left and the right abuts each other, and the bottom plate ( 110) is configured to block the front side, and the width of the rear railing 120 is configured to match or close to the width of the bottom plate 110.

In the present invention, one of the first extension railing 150 is rotatably coupled to the left and right ends of the rear railing 120, and the second extension railing 160 is respectively attached to the left and right ends of the first extension railing 150. It can be said that it is an important feature to use a double-structured hinge when it is pivotable on the other side.

First, it is provided with a vertical bar (B) in which a hinge that can be rotated forward is formed on one side and a hinge that can be rotated rearward on the other side is formed, but one hinge is a pair of first couplers respectively coupled to both ends of the rear railing (120). In a state in which the first double hinge part 151 is configured, one side of the first extension rail 150 is coupled to the other hinge of the first double hinge part 151.

At this time, the vertical bar (B) is basically manufactured to have a dimension equal to or close to the thickness of the first extension railing 150, preferably the rear railing, the first extension railing 150, and the second extension railing 160 ) Are all made to have the same thickness as the width of the vertical bar (B).

The first double hinge part 151 has a feature of assisting rotation between the rear railing 120 and the first expansion railing 150 but supporting free rotation in the front and rear directions. In other words, in the case of a conventional single hinge, not only is the rotation direction restricted, but in particular, in a structure in which a plurality of railings are folded, such as to be retracted, a lot of gaps and a total space due to the hinge connection structure are inevitably required.

In contrast, the present invention adopts the same structure as the first double hinge part 151, and thus has many advantages in terms of space utilization while being stable when partially folded, such as deformation of various working spaces and opening and closing in a door shape.

The connection between the first extension rail 150 and the second extension rail 160 is also made through a second double hinge part 161 having the same structure as the first double hinge part 151. That is, one hinge of the second double hinge part 161 is coupled to the other end of the first extension railing 150 and the other hinge is coupled to one of the second extension railings 160.

Through this structure, the first extension railing 150 is erected at the left and right ends of the floor plate 110, respectively, and the second extension railing 160 is erected at the front end of the floor plate 110. It prevents the falling of the worker or the load, and it can be partially opened without removing the railing structure when the worker enters or leaves the load.

That is, a pair of second extension railings 160 are completely folded and fixed to the left and right, respectively, or the first extension railing 150 and the second extension railing 160 are folded to the rear of the rear railing and stored. It prevents problems such as working without a safety railing due to inconvenient reasons such as the removal method safety railing.

In this structure, the sky bucket according to the present invention is configured to expand the work space by spreading the front railing 130 and the side railing 140 outward and using it as a working scaffold. This work space expansion structure can be substantially referred to as a structure of a conventional sky bucket.

Specifically, the front railing 130 is hinged to the front end of the floor plate 110 so as to be able to rotate vertically upward from the horizontal direction. That is, the front railing 130 may serve as a safety railing during work in a vertically upper position, but may be laid horizontally to extend the work space extending from the floor plate 110. At this time, the front railing 130 is manufactured to have an appropriate height to prevent a fall while erected vertically, and is generally configured to have a relatively lower height than the rear railing 120.

Side railings 140 are installed symmetrically at the left and right ends of the floor plate 110, respectively. Specifically, the left side railing 140 is hinged to the left end of the floor plate 110 so that it can be rotated vertically upward from the horizontal direction, and protruding to a length corresponding to the height of the front railing 130 by a front end. It is provided with an extension part 141 and forms an extended rectangular work space without empty space.

Similarly, the side railing 140 of the same shape is hinged to the right end of the floor plate 110 so that it can be rotated vertically upward from the horizontal direction, and protruded to a length corresponding to the height of the front railing 130 by a front end. A space that may fall through the expansion part 141 is removed.

At this time, the extension part 141 is hinged to the side railing 140 as in the accompanying drawing, but the side railing 140 is erected vertically upward with respect to the floor plate 110 with the front railing 130 It rotates outward in the state and is configured to be folded in a form overlapping each of the side railings 140.

Eventually, such an extension part 141 expands the front railing 130 and the left and right side railings 140, that is, to form a horizontal position, thereby securing a rectangular work space by filling the left and right front corners when expanding the work space. It is a structure to increase safety, and a structure with substantially the same effect is realized by hinged to the left and right sides of the front railing 130 instead of hingedly coupling the extension part 141 to the side railing as shown in the attached drawing. It can be.

As described above, the front railing 130 and the side railing 140 can be spread outward and used as a working scaffold in the form of an extension of the floor plate 110, but in this case, the handrail disappears and the worker and cargo fall. The risk is very high.

Even in the prior art, only the rear railing 120 and the front railing 130 and a pair of side railings 140 are provided on the floor plate 110, and the front railing and the side railing 140 and the extension part 141 are used. As it was laid to expand the work space, it was inevitable to have a separate detachable railing structure, and there was a risk due to carelessness during work, not installing a separate railing structure, or unstable installation.

Accordingly, in a situation where there is a request for a safety railing in a state that cannot be removed from an industrial safety management institution, in the present invention, it is formed continuously from the rear railing in response to such work space expansion, so that it is not removed and folded or unfolded freely. It is constructed so that it can be used as a door when necessary to protect it from falling at all times by having multiple extension railings.

As mentioned above, in the case of the first extension railing 150 and the second extension railing 160, the work space is reduced, that is, the floor plate 110 is configured to surround both sides and the front, when the work space is expanded. A third extension railing 170 and a fourth extension railing 180 are additionally installed to protect the additional space.

At this time, basically, the first extension railing 150 is configured to have a length corresponding to the height of the side railing 140, and in a state where the side railing 140 is laid sideways, the rear railing 120 is moved to the rear. It is protected by blocking, and the second extension railing 160 partially blocks both sides.

The third extension railing 170 blocks and protects the rest of both sides along with the second extension railing 160, and the fourth extension railing 180 blocks and protects the entire extended work space.

Likewise, the second extension railing 160 and the third extension railing 170 are connected through a third double hinge part 171 having the same structure as the first double hinge part 151. That is, one hinge of the third double hinge part 171 is coupled to the other end of the second extension railing 160 and the other hinge is coupled to the third extension railing 170.

The third extension railing 170 and the fourth extension railing 180 are also connected through a fourth double hinge part 181 having the same structure as the first double hinge part 151. That is, one hinge of the fourth double hinge part 181 is coupled to the other end of the third extension railing 170 and the other hinge is coupled to the fourth extension railing 180.

Through this, in a state in which the front railing, the side railing 140, and the extension part 141 are horizontal and the work space is expanded, the first extension railing 150 moves to the rear together with the rear railing 120 2 The extension railing 160 and the third extension railing 170 are placed at the left and right ends of the work space, and the fourth extension railing 180 is erected at the front end of the work space, so as to surround the work space. Will be prevented.

As mentioned above, as the work space is expanded by laying the side railing 140, the fourth expansion railing 180 on the left and right blocks the front and protects it. For this purpose, the fourth expansion railing 180 is extended. It is composed in a way that the front of the workspace is divided into two.

In this case, as the length of the left and right of the substantially extended work space becomes longer, the length of the fourth extension railing 180 is also increased, and when it is rotated to the outside, inconvenience and a wide rotation section are required, resulting in inconvenience. Furthermore, as mentioned above, when the fourth extension rail 180 is folded from the first extension rail 150 in a state in which the side railing 140 and the front railing 130 are erected, more space than necessary may be required.

Accordingly, in the present invention, the fourth extension railing 180 includes a third folding part 182 and a fourth folding part 183 divided into two parts as shown in the accompanying drawings, and the first double hinge part 151 and It is preferable that the auxiliary double hinge portion 184 of the same structure is interposed therebetween.

In addition, in response to the reduction of the working space, the side railing 140 and the front railing erected from the first extension railing 150 to the fourth extension railing 180 must be folded to the outside, as well as partial opening. Accordingly, it is preferable that the third extension railing 170 is also divided into two parts.

At this time, in the case of the fourth extension railing 180, the third folding part 182 and the fourth folding part 183 may be divided into a form in which the third folding part 182 and the fourth folding part 183 are divided into half, but in the case of the third extension railing 170, the operation of overlapping and folding is performed. In consideration, it is preferable that the first folded portion 172 and the second folded portion 173 having a relatively shorter length than the first folded portion 172 are configured to be coupled through a hinge formed to be foldable inward. .

At this time, it is self-evident that fixing should be performed in a form that is folded or unfolded to surround the work space from the first extension rail 150 to the fourth extension rail 180, and can be fixed in various ways.

To this end, in the present invention, a locking means 191 that is formed in a portion where a hinge is installed to selectively restrict the rotation of the hinge, and the front railing 130, the side railing 140, and the extension part 141 are vertical When the space is reduced and the first extension railing 150 is positioned on the left and right, the second extension railing 160, the third extension railing 170, and the fourth extension railing 180 overlap in the side or front. It is provided with a fixing means for holding it to maintain the state.

The locking means 191 includes a pair of fixing tubes 192 vertically coupled to each structure coupled to one side of the hinge and the other side of the hinge, and'∩' shape in which both ends are simultaneously inserted into the fixing tube 192 The fixture 193 may be formed, and loss of the fixture 193 can be prevented by forming a protrusion at the end of the fixture 193 so as not to exit the fixture tube 192 in a state in which one portion of the fixture 193 is formed relatively long.

Likewise, the fixing means 194 is a'∩'-shaped fastener 193 formed with a width that can be inserted into the selected fixing tube 192 by installing a fixing tube 192 at each corresponding position in the folded state of each extension railing. It can be provided. In this case, the width of the fixture provided in the fixing means 194 is wider than the fixture provided in the locking means 191.

In addition, a protrusion is formed at the lower end of the fourth extension railing 180 from the first extension railing 150, and the bottom plate 110, the side railing 140, and the front railing 130 are laid down. A groove is formed in the contact portion from the first extension rail 150 to the fourth extension rail 180 to correspond to the protrusion so that it can be easily fixed at an accurate position, thereby enabling more stable use.

Such an extension railing structure may be installed in the form of an addition to a conventional sky bucket, or may be newly manufactured in the form of an extension railing installed on the rear railing.

Through the structure according to the present invention, an extension railing in a non-removable form is always provided, so that it is possible to effectively prevent a fall and a fall. At this time, as all sides of the work space are blocked by the extension railing, a door part that can be accessed without crossing the railing can be configured for this purpose, since workers must cross the railing when entering and exiting.

In configuring the door part, it is preferable to apply a method of opening and closing part of the extension railing in a hinged manner, or forming an entrance while the shape of the extension railing is fixed and maintained.

To this end, a pair of vertical vertical frames having a vertical direction at a selected position such as the fourth extension railing 180 are installed so as to have an interval in which the operator can enter and exit, and a horizontal frame in the transverse direction crossing the installed vertical frame horizontally. However, the horizontal frame is installed so as to be able to slide up and down from the center part of the vertical frame to the upper part.

That is, the vertical frame is composed of square pipes or pipes, and a support structure is installed at both ends of the horizontal frame to surround the vertical frame and move up and down, and a range of movement from the lower and upper ends of the horizontal frame is proposed on the vertical frame. It is configured to be supported through a frame formed in the lateral direction or forming a protrusion.

Through this, the horizontal frame is lowered by its own weight to block the entrance at all times, and if necessary, it is lifted so that the operator can enter and exit the floor plate 110 position, so that the installed state of the safety railing can be maintained at all times.

Although the present invention has been described based on a preferred embodiment with reference to the accompanying drawings, it is apparent that those skilled in the art can make various modifications without departing from the scope of the present invention from this description. Accordingly, the scope of the invention should be construed by the claims set forth to cover many of these variations.

110: base plate 120: rear railing
130: front railing 140: side railing
141: extension part 150: first extension railing
151: first double hinge unit 160: second extended railing
161: second double hinge part 170: third extended railing
171: third double hinge portion 172: first folding portion
173: second folding part 180: fourth extension railing
181: fourth double hinge portion 182: third folding portion
183: fourth folding portion 184: auxiliary double hinge portion
191: locking means 192: fixing tube
193: fixture 194: fixing means
H: Hinge B: Vertical bar

Claims (5)

In the aerial work platform safety railing structure,
A floor plate 110 that serves as a scaffold and forms a working space;
A rear railing 120 formed to have a predetermined height at the rear end of the bottom plate 110;
A front railing 130 hinge-coupled to the front end of the floor plate 110 so as to be rotatable vertically upward from a horizontal direction;
Hinge-coupled to the left and right ends of the floor plate 110 so as to be able to rotate vertically upward from the horizontal direction, respectively, but the extension part 141 protruding to a length corresponding to the height of the front railing 130 is formed as a front end. A pair of side railings 140 provided;
Consisting of a vertical bar (B) that has a hinge that can be rotated forward to one side and a hinge that can rotate rearward to the other side, one of the first pairs of hinges coupled to both ends of the rear railing 120 A double hinge part 151;
A pair of first extension railings having one side coupled to the other hinge of the first double hinge part 151 and having a length corresponding to the front and rear direction of the floor plate 110 and the height of the side railing 140 (150);
A pair of second double hinge portions 161 having the same structure as the first double hinge portion 151, wherein one hinge is coupled to the other end portion of the first extension rail 150;
A pair of second extension railings 160, one of which is coupled to the other hinge of the second double hinge part 161;
A pair of third double hinge portions 171 having the same structure as the first double hinge portion 151, wherein one hinge is coupled to the other end portion of the second extension railing 160, respectively;
A pair of third extension railings 170, one of which is coupled to the other hinge of the third double hinge part 171;
A pair of fourth double hinge parts 181 having the same structure as the first double hinge part 151, wherein one hinge is coupled to the other end of the third extension railing 170, respectively;
A pair of fourth extension railings 180, one of which is coupled to the other hinge of the fourth double hinge part 181; Expandable sky bucket safety railing structure having a folding structure having a.
delete The method of claim 1,
The third extension railing 170,
A folding structure, characterized in that the first folded portion 172 and the second folded portion 173 having a relatively shorter length than the first folded portion 172 are configured to be coupled through a hinge formed to be foldable inward Expandable sky bucket safety railing structure with.
The method of claim 3,
The fourth extension railing 180,
The third folded portion 182 and the fourth folded portion 183 divided into two parts are configured to be coupled with an auxiliary double hinge portion 184 having the same structure as the first double hinge portion 151 therebetween. Expandable sky bucket safety railing structure having a folding structure, characterized in that.
The method of claim 4,
A locking means 191 formed in a portion where the hinge is installed to selectively limit the rotation of the hinge,
When the front railing 130, the side railing 140, and the extension part 141 are vertical, the work space is reduced, and the first expansion railing 150 is positioned on the left and right, the second expansion railing 160 And a fixing means (194) for holding the third extension railing 170 and the fourth extension railing 180 so as to maintain the overlapping state.

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