KR100834405B1 - Safety apparatus for high-place work vehicle - Google Patents

Abstract

A safety apparatus for an aerial work platform is provided to load long or wide objects on a platform conveniently by folding a sensing unit with regard to a settling unit. A safety apparatus for an aerial work platform comprises a sensing unit(30), and a settling unit(50). The sensing unit includes a movable member, a fixed member, and a sensor. The movable member and the fixed member move relatively between a maximum separation distance and a minimum separation distance. The sensor outputs a signal for stopping upward movement of a lifting unit, when the distance between the movable member and the fixed member reaches the minimum separation distance. The settling unit causes the fixed member of the sensing unit to hinge at the top of a platform. The sensing unit further includes an elastic member, a maximum separation stopper, and a minimum separation stopper. The elastic member gives elastic force to in a direction of separating the movable member from the fixed member. The maximum separation stopper limits the maximum separation distance caused by the elastic force. The minimum separation stopper limits the minimum separation distance caused by external force against the elastic force. The movable member includes an upper plate and a first lateral plate. The upper plate receives external force. The lateral plate extends downward at the edge of the upper plate. The fixed member includes a lower plate and a second lateral plate. The lower plate is fixed to the settling unit. The second lateral plate extend upwards at the edge of the lower plate. The first lateral plate and the second lateral plate slide mutually in a close contact.

Description

Safety device for high-place work vehicle

TECHNICAL FIELD This invention relates to the safety mechanism used when attached to the aerial platform used when working in a high place.

Generally, the aerial platform is a platform used when working in a high place spaced from the ground. It is a perspective view which shows the conventional aerial platform.

The aerial platform 200 is movable by the moving mechanism 400 in the substantially horizontal direction from the ground. The elevating mechanism 300 is mounted on the moving mechanism 400, and the aerial platform 200 is movable in a substantially vertical direction with respect to the ground by the elevating mechanism 300. The aerial platform 200 is also provided with an expansion workbench to expand its own work space, which is shown in the right end of the drawing.

When the aerial platform 200 is lifted by the lifting mechanism 300, the aerial platform 200 may be pressed tightly at heights, for example, ceilings or girders. At this time, when the worker is squeezed between the aerial platform and aerial platform 200, an accident occurs.

Therefore, when the aerial platform 200 is excessively raised, a safety mechanism is required to block the power supply for lifting the lifting mechanism 300.

In the past, various proposals for the safety mechanism have been made.

Utility Model Registration No. 20-0425825 is to install an upward compression spring (inserting a refraction shaft) on the upper panel to be lifted and there is no stopper between the lift and the upper panel. Part of the body may be constricted, and the rising and falling limits cannot be set, and there is a risk of leaving or breaking the sensor. In addition, since it is fixedly installed on the lift, there is a disadvantage in that it takes time to attach and detach.

Patent No. 10-0656960 is to install an upward compression spring on a vertical rod connected to a horizontal safety frame, the stopper to regulate the degree of falling seems to be provided in the spring end, but the stopper for regulating the degree of rise is not installed Rather, the vertical rod is configured to be separated from the spring, so that the safety device may be released during use. In addition, a separate workbench outside space for the vertical rods and the springs is required, resulting in a waste of space.

In Patent Publication No. 10-2007-0017223, a tension spring is installed in a direction of standing up a link installed by tilting one side in order to elevate the upper frame with respect to a fixed frame, and a stopper for regulating the degree of standing of the link is separately provided. It is installed, and is also configured to install a separate jamming jaw to further regulate the degree of falling of the upper frame. According to this, a part of the worker's hand or body can be caught between the upper frame and the jam prevention jaw. In addition, the large number of parts and the complicated structure lead to waste of time and money in manufacturing.

By the way, in the operation | work at a height, it is extremely frequent to load the thing exceeding the specification of the limited aerial platform 200 because it is long, such as a duct or a piping pipe, or is wide like various panels. In this case, the safety platform for the aerial platform, it is necessary to be configured to freely detachable to the aerial platform 200, as well as the function to cut off the power when excessive rise. In addition, even when not completely detachable, it is preferable that a function of removing or removing all of the safety mechanisms or releasing the safety function is provided at the time of loading a large cargo exceeding the specification of the aerial platform 200.

In addition, between the sue and the top of the safety mechanism, as well as the operating portion of the safety mechanism, there must be a function to prevent the operator's hands or body parts from being narrowed.

This additional function has not been achieved in the prior art.

The present invention has been made in order to solve the problems of the prior art as described above, by blocking the power during excessive rise, so as not to narrow the operator's hand or body part between the height and the top of the safety mechanism, safety mechanism To provide a safety mechanism for the aerial platform, so that even between the operating part of the worker's hands or body parts are not narrowed.

In addition, when the length is long, or the width is wide, to load the object exceeding the specification of the limited aerial platform, it is to provide a safety mechanism for the aerial platform easily removable and free to the aerial platform.

In addition, it is intended to provide a safety platform for the aerial platform that can remove some or all of the safety mechanism, or release the safety function when loading a large cargo exceeding the specifications of the aerial platform, even if not completely detachable .

In addition, it is intended to provide a safety platform for the aerial platform to prevent the loss by attaching the removed part to the remaining part when the part is removed.

In addition, the entire safety mechanism is rotated to the outside of the aerial platform, to provide a safety mechanism for the aerial platform that can be secured to the loading space with the stop function.

In addition, by providing a stopper for both the rising limit position and the lower limit position of the safety mechanism, it is to provide a safety mechanism for the aerial platform that can not be separated arbitrarily.

In addition, there is no need to install in the outer space of the aerial platform, it is to provide a safety mechanism for the aerial platform to prevent waste of space by installing in the upper space of the aerial platform.

In addition, in the case where the safety mechanism is formed long, the parallel lifting of the moving part is ensured, and by using the mechanism for parallel lifting, a stopper for the rising limit position and the falling limit position is formed, thereby simplifying the use of the parts. In addition to achieving a structure, to provide a safety mechanism for the aerial platform that can be prevented of the failure, reducing the manufacturing cost.

Safety device for aerial work platform of the present invention devised to solve the above problems, in the safety mechanism for preventing excessive rise of the work platform lifted by using the lifting mechanism mounted on the moving mechanism, the predetermined maximum separation distance and moving part, which movement relative to each other between a minimum spacing and fixing, and by an external force, the motion part and that when the spacing between the state wherein a minimum distance to a sensor for generating a signal to stop the lift sphere rising operation A sensing unit and a binding unit for detachably fixing the fixing unit to the upper end of the working table, the sensing unit comprising: an elastic member for applying an elastic force in a direction separating the moving unit from the fixing unit; and maximum separation stopper for regulating the maximum distance by, the external force resisting the resilient force Provided with a minimum separation stopper for a minimum regulating the separation distance, the motion unit consists of a down-side plate is formed extending downward to receive the external force, the top plate and, from the edge of the upper panel, wherein the fixing part, fixed to the engagement portion consists of the upstream side plate is formed extending upward from the edge of the lower plate and the lower plate, upstream side of the moving part and the downstream side of the high state is characterized to be installed in close contact with each other to enable sliding.

Here, the contact portion is further provided on the movement portion , the contact portion is preferably provided with a main body vertical bar formed in an elongated shape, and a main body horizontal bar mounted to the end of the main body vertical bar.

The main body horizontal bar has a hinge for rotatably connecting with the main body vertical bar at one end, and a coupling tool for engaging with the other main body vertical bar at the other end of the main body horizontal bar. It is preferred that the end is provided with a mating coupler that is engaged with the coupler.

In addition, in the vicinity of the coupler of the main body horizontal bar, it is preferable that a magnet for allowing magnetic attachment to the main body vertical bar when folded.

The contact portion preferably includes an extended vertical bar extending from the main body vertical bar and an extended horizontal bar mounted to an end of the extended vertical bar.

In addition, the expansion horizontal bar is provided with a hinge for rotatably connecting with the expansion vertical bar at one end, the coupling end for engaging with the other expansion vertical bar at the other end, the coupling of the relative expansion vertical bar It is preferred that the end is provided with a mating coupler that is engaged with the coupler.

In addition, a magnet for allowing magnetic attachment to the main body vertical bar or the extended vertical bar is provided in the vicinity of the coupling hole of the expansion horizontal bar.

On the other hand, a rotation shaft is provided in the said movement part and the fixed part, respectively, and each said rotation shaft penetrates through the through-hole, and the distance between the said through-holes is formed longer than the width | variety, and the said moving part and the fixed part are formed, respectively. It is desirable to install a rotation bar that stands up or evangelizes according to the relative government movement.

Here, it is preferable that the movement part and the fixing part are each formed in an elongated shape , and a plurality of sets of the respective rotation shafts and the rotation bar are provided in the longitudinal direction according to the shape of the movement part and the fixing part.

And, when the pivoting bar is standing, the movement is restricted in contact with a part of the moving part or the stopper plate fixed to the moving part, or a part of the fixing part or the stopper plate fixed to the fixed part, whereby It is preferred that the maximum spacing stopper be configured.

And, the pivoting bars, at the time of conduction, the stopper plate is formed fixed to the part or the moving part of the motion part, or the high and a part or the government into contact with the fixed-formed stopper plate to the government, and movement is restricted, whereby the by It is preferred that a minimum distance stopper is constructed.

In addition, the pivoting bar is formed such that the shape seen in the vertical direction of the rising or falling direction is a parallelogram , the parallelogram does not have a right angle, and the lengths of two neighboring sides are different, and the through hole is the parallel. A diagonal formed between opposite obtuse portions of a quadrangle, and the diagonal lines connecting the obtuse angles are between vertical lines passing through the through holes, and a stopper plate fixed to a portion of the moving portion or the moving portion, or a portion of the fixing portion or the It is preferable that the part which contacts the stopper plate fixedly formed in the fixed part is at least one side of the parallelogram of the said rotation bar.

The pivoting bar is formed such that the shape seen in the vertical direction of the standing or falling direction becomes a parallelogram , and the through hole has the maximum separation distance when the imaginary line connecting the through holes becomes vertical . And a stopper plate formed at a position to be the minimum separation distance when the pair of parallel sides of the parallelogram become horizontal , and a part of the moving part or a stopper plate fixed to the moving part, or a part or the high part of the fixing part. It is preferable that the part which contacts the stopper plate fixedly formed in the government part is at least one side of the parallelogram of the said rotation bar.

On the other hand, between the fixing portion and the binding portion, a hinge is provided on one side, so that the sensing unit can be conducted, and on the other side, for fixing the fixing portion to the binding portion by restricting the conduction by the hinge It is preferable that the detachable part is provided.

On the other hand, it is preferable that the elastic member is a compression spring or a tension spring provided between the moving part and the fixed part.

The elastic member is preferably a compression spring or a tension spring installed between the moving part and the rotation bar, or between the fixed part and the rotation bar.

On the other hand, the sensor is preferably installed in the moving part or the fixed part.

On the other hand, the sensor is preferably installed in the moving part or the fixed part or the rotating bar.

On the other hand, the pivoting bar is formed such that the shape seen in the vertical direction of the standing or falling direction becomes parallel hexagonal shape, and the through hole is formed in an opposite obtuse portion of the parallel hexagonal shape, and at least the through hole One side of the neighboring side forming the formed obtuse angle is a stopper plate fixed to a part of the moving part or the moving part, or a stopper plate fixed to a part of the fixing part or the fixing part when the pivoting bar stands. contacting the movement is regulated, whereby the other side of the adjacent sides, which consists of the said maximum separation stopper, forming an obtuse angle, at least two said through-holes have been formed is, at the time of conduction of the pivoting bars, part or said of the motion part A stopper plate fixed to the moving part or a part of the fixed part or a stopper plate fixed to the fixed part Regulation and, thereby is preferred that the minimum separation stopper configured.

According to the present invention of the above configuration, the power is cut off when excessive rise, so that the operator's hand or part of the body is not squeezed between the height and the upper end of the safety mechanism, the operator's hand or even between the operating part of the safety mechanism This can prevent parts of the body from narrowing.

In addition, when a length or a wide area is required to load an object exceeding the specification of the limited aerial platform, it is possible to provide a safety mechanism for the aerial platform that is easily detachable to the aerial platform.

In addition, even when not completely detachable, it is possible to provide a safety mechanism for the aerial platform that can remove some or all of the safety mechanism, or release the safety function when loading a large cargo exceeding the specifications of the aerial platform. .

In addition, when the part is removed, the removed part may be attached to the remaining part, thereby providing a safety platform for the aerial platform that prevents the loss.

In addition, by rotating the entire safety mechanism to the outside of the aerial platform, it is possible to provide a safety mechanism for the aerial platform that can be secured to the loading space with the stop of the function.

In addition, by providing a stopper for both the rising limit position and the lower limit position of the safety mechanism, it is possible to provide a safety mechanism for the aerial platform that does not leave freely.

In addition, it is possible to provide a safety mechanism for the aerial platform, which does not need to be installed in the outer space of the aerial platform, and is installed in the upper space of the aerial platform, thereby preventing waste of space.

In addition, in the case where the safety mechanism is formed long, the parallel lifting of the moving part is ensured, and by using the mechanism for parallel lifting, a stopper for the rising limit position and the falling limit position is formed, thereby simplifying the use of the parts. Along with achieving the structure, it is possible to provide a safety mechanism for the aerial platform that can prevent failure and reduce manufacturing costs.

EMBODIMENT OF THE INVENTION Hereinafter, the structure of this invention is demonstrated in detail, referring an accompanying drawing. In addition, about the part which has the same structure, detailed description may be abbreviate | omitted by attaching | subjecting the same code | symbol even if drawing differs.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the use condition which attached the aerial platform safety mechanism of the present invention to the aerial platform, and FIG. 2 is a perspective view of the aerial platform safety mechanism of this invention.

Safety mechanism for aerial platform 100 of the present invention is a mechanism for preventing excessive rise of the work platform 200 is elevated using the lifting mechanism 300 mounted on the moving mechanism (400). It basically includes a sensing unit 30 and a binding unit 50. In addition, the sensing unit 30 further includes a moving unit 31, a fixing unit 32, and a sensor 37 (see FIGS. 5 to 7).

The movement part 31 and the fixed part 32 are parts which move relative to each other between a predetermined maximum distance and a minimum distance.

Here, the maximum separation distance is a distance between the moving part 31 and the fixed part 32, which is formed by the elastic force of the elastic member 36 and the stopping force of the maximum separation stopper, which are described later when there is no external force. Distance. That is, it means the distance which forms the external shape of the safety device 100 for everyday use without external force.

In addition, the said minimum separation distance is the said moving part 31 and the fixed part 32 which are formed by the external force which opposes the elastic force of the elastic member 36 mentioned later, and the stop force of the minimum separation stopper when an external force is applied. ) Is the distance between them. That is, the sensor 37 to be described later should be sensed by an external force, and at the same time, it means a distance that does not cause destruction of the sensor 37.

In addition, the separation distance does not necessarily mean that they are spaced apart from each other physically through a space therebetween, and is a concept that includes a case in which a side part or the like is closely connected to each other and is slidably connected to each other. Means the distance between locations.

The sensor 37 is a device that generates a signal to stop the lifting operation of the lifting mechanism 300 when the separation distance between the moving part 31 and the fixed part 32 becomes the minimum separation distance by an external force. . For example, well-known sensors 37, such as a limit switch, a laser rangefinder, and an ultrasonic rangefinder, can be employ | adopted. Here, the external force means a force applied to the exercise part 31 by being pushed to the aerial platform 200 by a height such as a ceiling or a girder.

The binding part 50 is a part for detachably fixing the fixing part 32 of the sensing part 30 to the upper end 230 of the work table 200. The shape of the binding part 50 depends on the shape of the upper end 230. For example, if the upper end 230 is a pipe, a frame having a cross-sectional c-shape formed to surround the pipe may be sufficient.

The binding unit 50, in order to detachably couple to the upper end 230, the binding port 51 may be fastened, which may be configured as a means that can be fixed in a manner other than a completely fixed form. For example, it has a through hole at a position corresponding to the thickness or height of the upper end portion 230, and can be detachably fixed to the through hole by a bolt and a nut (see FIG. 7). Alternatively, it has a through hole 58 or a groove at a position corresponding to the thickness or height of the upper end 230, and a spring 56 between the stopper 57 and the frame 54 in the through hole 58 or the groove. It is possible to fix it detachably by inserting and removing the pin 55 which has a return force by using (it uses the structure of the enlarged view of FIG. 7 (a)).

In addition to the basic configuration, the sensing unit 30 includes an elastic member 36, a maximum spaced stopper, and a minimum spaced stopper.

The elastic member 36 is a member that applies an elastic force in a direction in which the moving part 31 and the fixing part 32 are spaced apart. In general, a compression spring is used as the elastic member 36 used for the separation of two members, but is not limited thereto. Compression rubber, an air cylinder, or the like may be used. Furthermore, by using a combination of wires and rod-shaped members, the use of a tension spring, a rubber band, a negative pressure air spring, or the like is not excluded.

The maximum separation stopper is a stopper that regulates the maximum separation distance by the elastic force. This is for forming the maximum separation distance in the state that no external force is applied, and at the same time, the movement portion 31 is not separated from the fixed portion 32.

The minimum separation stopper is a stopper that regulates the minimum separation distance due to the external force against the elastic force. This is a configuration for protecting the sensor 37 by not approaching less than the minimum separation distance no matter how external force is applied. In the present invention, as will be described later, since the side plates of the moving part 31 and the fixing part 32 are configured to slide in close contact with each other, the worker's hand or the body between the moving part 31 and the fixing part 32. It does not occur when some stenosis occurs.

In addition to the above configuration, the moving part 31 is composed of an upper plate and a lower side plate, and the fixing part 32 is composed of a lower plate and an up side plate.

The upper plate is a plate that receives the external force. The downward side plate is a plate extending downward from an edge of the upper plate. As a result, the movement part 31 has a cross-section C shape with an open lower surface.

The lower plate is a plate fixed to the binding unit 50. The upward side plate is a plate extending upward from an edge of the lower plate. As a result, the fixing part 32 has a cross-sectional c-shape with an open top surface.

And in this state, the downward side plate of the said movement part 31 and the upward side plate of the said fixing | fixed part 32 are provided so that a close sliding to each other is possible. The close contact means a tight fit of the worker's hand or body part, even if not tight tightness of watertightness or airtightness, to the extent that the worker's hand or body is not narrowed to the gap. Thus, even if the movement part 31 and the fixing part 32 make relative movements with each other, the case where the worker's hand or a part of the body is constricted on the side plate side does not occur, and at the same time, the movement part 31 and The fixing portions 32 are guided to each other to smoothly move relative to each other without being separated from each other.

On the other hand, in the case of loading an object having a long length or a wide area, it is necessary to remove or fold a part of the safety mechanism 100. Hereinafter, the contact portion 10 for this function will be described.

3 is a plan view for explaining the operation of the contact portion constituting the safety platform for aerial platform of the present invention. 4 is a perspective view for explaining a state in which the contact portion constituting the safety platform for aerial platform of the present invention is extended in the longitudinal direction, the horizontal bar is folded.

On the movement part 31, it is preferable that the contact portion 10 is further provided. In this case, the contact portion 10 includes main body vertical bars 11 and 12 and main body horizontal bars 13.

The main body vertical bars 11 and 12 are bars formed in an elongated shape. In general, the upper end 230 is made of a pipe-shaped frame that is formed long, and forms a quadrangle when viewed from above. The main body vertical bars (11, 12) is preferably installed on the long side of the rectangle. In more detail, when the aerial platform 200 is composed of the main working platform 210 and the expansion working platform 220, the end of the main body horizontal bar 13 in the longitudinal direction in the direction in which the expansion working platform 220 is extended It is preferable to install the main body vertical bars (11, 12).

The main body horizontal bar 13 is a bar attached to the ends of the main body vertical bars 11 and 12. The main body horizontal bar 13 is preferably installed to correspond to the short side of the square of the aerial platform 200. In more detail, in the case where the aerial platform 200 is composed of the main working platform 210 and the expansion working table 220, the main body vertical bar (11) in the longitudinal direction in the vertical direction of the direction in which the expansion working platform 220 is extended What is necessary is just to provide the said main body horizontal bar 13 to the edge part of 12.

By the main body vertical bars (11, 12) and the main body horizontal bar 13, the contact portion 10 of the shape corresponding to the planar shape of the upper end 230 of the aerial platform 200 is made, the movement portion ( 31, the main body vertical bars 11 and 12 are preferably provided, but the main body horizontal bars 13 may be provided.

The main body horizontal bar 13 preferably includes a hinge 17 at one end and a coupling tool 18 at the other end.

The hinge 17 is a member that is rotatably connected to the main body vertical bar 12, that is, the first main body vertical bar. As a result, the main body horizontal bar 13 may be rotated with the hinge 17 as an axis in a state of being coupled to the first main body vertical bar 12.

The coupler 18 is a member for binding with another main body vertical bar 11, ie, a second main body vertical bar, separate from the first main body vertical bar 12 connected to the hinge 17. As a result, the main body horizontal bar 13 may be detachably coupled to the second main body vertical bar 11 while being connected to the first main body vertical bar 12.

In this state, the first main body vertical bar 12 is, of course, one end is connected to the hinge 17, and the mating main body vertical bar, that is, the second main body vertical bar to which the coupler 18 is bound. Of course, the end portion of the 11 is provided with a relative coupler that is detachably attached to the coupler 18.

By the said structure, as shown in FIG. 3 and FIG. 4, the said main body horizontal bar 13 is rotatable with the hinge 17 as the axis.

At this time, in the vicinity of the coupler 18 of the main body horizontal bar 13, it is preferable that a magnet for enabling magnetic attachment to the main body vertical bar 12 when folded. Thus, as shown in Figures 3 and 4, when the main body horizontal bar 13 is folded, it is attached to the main body vertical bar 12 by a magnetic force, there is no fear of loss, such as when completely removed, In the middle of work, the folds are again unfolded so that no interruption occurs.

On the other hand, the contact portion 10 is preferably provided with an extended vertical bar (14, 15) and an extended horizontal bar (16).

The extended vertical bars 14 and 15 are bars extending from the main body vertical bars 11 and 12. When the aerial platform 200 is composed of the main work bench 210 and the extended work bench 220, the main body at the end of the main body horizontal bar 13 in the longitudinal direction in the direction in which the extended work bench 220 is extended Since the vertical bars 11 and 12 are provided, in order to extend the length thereof, expansion vertical bars 14 and 15 extending in the same direction as the main body vertical bars 11 and 12 are provided.

The extended horizontal bar 16 is a bar attached to the ends of the extended vertical bars 14 and 15. When the aerial work platform 200 is composed of the main work bench 210 and the extended work bench 220, the main body horizontal bar 13 is installed in the vertical direction in the vertical direction of the direction in which the extended work bench 220 is extended. Therefore, in order to cover the extended horizontal portion of the aerial platform 200, the extended horizontal bar 16 is installed in a direction parallel to the main body horizontal bar (13).

The extended vertical bars 14 and 15 and the extended horizontal bar 16 form a contact portion 10 corresponding to the expanded planar shape of the upper end 230 of the aerial platform 200.

In addition, the extension horizontal bar 16 is preferably provided with a hinge 20 at one end and a coupler 21 at the other end.

The hinge 20 is a member rotatably connected to the extended vertical bar, that is, the first extended vertical bar 15. As a result, the extended horizontal bar 16 may be rotated with the hinge 20 as an axis in a state in which the extended horizontal bar 16 is coupled to the first extended vertical bar 15.

The coupler 21 is a member for binding with another expansion vertical bar 14, that is, a second expansion vertical bar, separate from the first expansion vertical bar 15 connected to the hinge 20. As a result, the extended horizontal bar 16 may be detachably coupled to the second extended vertical bar 14 while being connected to the first extended vertical bar 15.

In this state, the first extension vertical bar 15 is of course connected to the hinge 20, one end of the relative expansion vertical bar, that is, the coupling sphere 21 is bound, that is, the second expansion vertical bar Of course, the end portion of 14 is provided with a mating coupler that is detachably attached to the coupler 21.

With the above configuration, as shown in FIGS. 3 and 4, the extended horizontal bar 16 is rotatable around the hinge 20.

In this case, a magnet for allowing magnetic attachment to the main body vertical bar 12 or the extended vertical bar may be provided near the coupler 21 of the extended horizontal bar 16. Thus, as shown in FIGS. 3 and 4, when the extension horizontal bar 16 is folded, the main body vertical bar 12 is extended when the extended vertical bar is short, and the extension is extended when the extended vertical bar is long. Since it is attached to the vertical bar by magnetic force, not only there is no fear of loss as in the case of complete removal, but also the folding is unfolded in the middle of the work so that it does not occur.

Hereinafter, when the said movement part 31 and the fixed part 32 make relative motion, the structure for preventing the departure | offset and being parallel when it spaced apart is demonstrated.

Fig. 5 is a side view (view from the vertical direction in the length direction) for explaining the configuration and operation of the sensing unit constituting the safety platform for aerial platform of the present invention.

In order to prevent separation during separation, the rotation shafts 34 and 35 are respectively provided on the movement part 31 and the fixing part 32, and the distance between the through holes is provided on the rotation shafts 34 and 35, respectively. Rotating bar 33 formed longer than the width is preferably installed. The rotating bar 33 is provided so that the respective rotating shafts 34 and 35 pass through the through hole. If the distance between the through holes is shorter than the width, the standing and falling are difficult. As a result, the rotation bar 33 stands or falls according to the relative movement of the movement part 31 and the fixing part 32.

For example, (a) of FIG. 5 illustrates a case in which the moving part 31 and the fixing part 32 are spaced apart by the elastic force of the elastic member 36 when no external force is applied. The bar 33 is in the state which stood up as much as possible by the regulation by the shape. Therefore, the moving part 31 is not separated from the fixed part 32 because it does not stand up above the maximum standing state.

In addition, (b) of FIG. 5, when the moving part 31 and the fixing part 32 move relative to each other so that the separation distance becomes smaller in response to the elastic force of the elastic member 36 due to an external force, the distance is reduced. In this case, the rotation bar 33 is in the middle of being conducted. If further conducted, eventually, the moving part 31 and the fixing part 32 are spaced apart by a distance corresponding to the width of the pivoting bar 33. Even in this case, the moving part 31 is not separated from the fixing part 32.

As such, the pivoting bar 33 regulates the separation between the moving part 31 and the fixing part 32 only by the length defined by the pivoting shafts 34 and 35 and the through-holes, so that the moving part 31 is the high. There is no departure from the government 32.

On the other hand, when the movement portion 31 and the fixing portion 32, for example, each formed in an elongated shape corresponding to the shape of the upper end 230, in order to maintain parallel relative movement, as shown in Figure 5, It is preferable that a plurality of sets of the respective rotation shafts 34 and 35 and the rotation bar 33 are provided in the longitudinal direction according to the shape of the movement part 31 and the fixing part 32. That is, the rotation bar 33 through which a through hole penetrates one rotation shaft 34 of the moving part 31 and one rotation shaft 35 of the fixing part 32 and each of the rotation shafts 34 and 35. In the case of using one set, a plurality of such sets are provided in the longitudinal direction.

As a result, a plurality of sets are standing up and inverted together, whereby the motion in the height direction is matched, and parallel relative motion is possible.

However, it is difficult to regulate the maximum separation distance or the minimum separation distance only by the interval between the through holes of the rotation bar 33, and it is also difficult to secure the constant of the parallel relative motion. For example, when the rotating bar 33 has an elongated rod shape and a through hole is formed on the center line of the bar, when the external force is applied in a state where the through hole is fully standing up to a maximum separation distance, the rotating bar ( This is because the conduction direction (upper rotation direction) of 33 may be the left side of the drawing or the right side of the drawing. In addition, in the case of the long rod shape, since the pivoting bar 33 is completely inverted and is not in close contact with the upper surface of the lower plate of the fixing part 32, the minimum separation distance is not achieved, thereby reducing the degree of freedom in design. .

Therefore, it is necessary to regulate the maximum separation distance or the minimum separation distance as a part within the movable range while restricting to fall and stand only in one direction. The structure which integrated the said function into one is demonstrated.

To this end, the rotation bar 33, the movement is restricted when standing, whereby the maximum spaced stopper is preferably configured. In addition, the rotation bar 33, the movement is restricted at the time of falling, whereby the minimum distance stopper is preferably configured.

And, the regulation of the movement, the rotation bar 33 is a part of the movement portion 31 or the stopper plate (38a, 38b) formed in the movement portion 31, or a portion of the fixing portion 32 or It is preferably made in contact with the stopper plate (38a, 38b) fixed to the fixing portion (32).

For example, although not shown, the pivoting bar 33 is formed in an elongated shape, and the through hole is formed at a distance longer than the width thereof.

At this time, the maximum separation distance in this configuration will be a distance which is opened so that the through hole is completely upright, but before that the rotating bar 33 is fixed to the moving part 31, the fixing part 32 or these By contacting the formed stopper, the separation distance corresponding to the contacted point is regulated as the maximum separation distance, and at the same time, the rotation bar 33 will be reversed again in the opposite direction to the direction in which the standing is incomplete when an external force is applied. The conduction direction is established. In addition, the minimum separation distance in this configuration will be the distance that the through-holes are fully conducted, but the rotation bar 33 is fixed to the moving part 31, the fixing part 32, or these beforehand. When contacting the formed stopper, the separation distance corresponding to the contacted point is regulated as the minimum separation distance, and at the same time, the rotation bar 33 will stand again in the opposite direction to the direction in which the conduction was incomplete when the external force was lost. The direction is confirmed.

Thereby, while the said rotation bar 33 functions as a stopper, it can be made to regulate the directionality of conduction and a standing at the same time. For example, FIG. 5 (a) shows a case where the maximum separation distance is reliably regulated when the upper surface that is horizontal when standing up the pivoting bar 33 contacts the lower surface of the upper plate of the movement part 31, but FIG. If a part of the rotation bar 33 is regulated before the standing state of Fig. 5 (a) in the conduction state of), the maximum separation distance is regulated to the transition state. If a part of the pivoting bar 33 is regulated during the fall, the minimum separation distance is regulated to the transitioned intermediate state, for example, the state of FIG. Then, as described above, by regulating the state during the standing up to the maximum separation distance and the state during the fall down by the minimum separation distance, the directionality of the fall or standing is regulated only in the direction in which the transition is possible, and the rotating bar 33 is For example, as shown in (b) of FIG. 5, the upper end stands up from left to right and is configured to be turned from right to left. Of course, it can be set in the opposite direction to the above figure.

Considering the shape of the rotation bar 33 in more detail, it is preferable that the rotation bar 33 is formed so that the shape seen in the vertical direction of the standing or falling direction becomes a parallelogram.

By using the rotating bar 33 of the shape, in order for the rotating bar 33 to function as the maximum spaced stopper and the minimum spaced stopper, the parallelogram does not have a right angle and the lengths of two neighboring sides are different. It is preferable to form. That is, the parallelogram has an acute angle and an obtuse angle when it is not a rectangular rectangle.

As shown in FIG. 5, the through hole is formed in an opposite obtuse portion of the parallelogram, and the diagonal lines connecting the obtuse angles are preferably formed between vertical lines passing through the through holes. In this case, when the through-hole on the side of the moving part 31 makes a circular motion around the through-hole on the side of the fixing part 32, the point that becomes the maximum height can correspond to the maximum separation distance. desirable.

In addition, stopper plates 38a and 38b fixed to a part of the moving part 31 or the moving part 31, or stopper plates 38a fixed to a part of the fixing part 32 or the fixing part 32. The part in contact with 38b) may be at least one side of the parallelogram of the pivoting bar 33. That is, when the stopper plates 38a and 38b are formed at positions different from those of the upper plate of the moving part 31 or the lower plate of the fixing part 32, the movement is restricted at the contact position.

At this time, as shown in (a) of Figure 5, when the moving part 31 and the fixing part 32 is spaced apart by the maximum separation distance, the upper surface of the parallelogram of the rotating bar 33 is horizontal By contacting the lower surface of the upper plate of (31), further rotation is suppressed, and the maximum separation distance is surely regulated. Thus, the pivot bar 33 functions as a maximum space stopper.

And, when the separation distance between the movement portion 31 and the fixed portion 32 is reduced by the external force, the transition to the state of Fig. 5 (a) to Fig. 5 (b), the rotation bar Numeral 33 is configured such that its upper end is inverted or stands only in the left direction of the drawing. Therefore, the conduction and standing directions are certainly regulated.

And, when further rotated in the state of Figure 5 (b), the long side of the parallelogram is stopped in a state in close contact with the upper surface of the lower plate of the fixing portion 32, thereby forming a minimum separation distance. Thus, the pivot bar 33 functions as a minimum space stopper.

On the other hand, another configuration for allowing the rotation bar 33 formed so that the shape seen in the vertical direction in the vertical direction of the rising or falling direction functions as the maximum spaced stopper and the minimum spaced stopper may also be considered.

In other words, the through hole is the maximum separation distance when the imaginary line connecting the through holes becomes vertical, and the minimum separation distance when the pair of parallel sides of the parallelogram becomes horizontal. Configured to form. For example, in FIG. 5, the case where a through-hole is formed in the acute angle part of parallelogram is mentioned. Alternatively, the parallelogram may have a rectangular shape, and a through hole may be formed in an opposite corner thereof. Alternatively, in the case where the parallelogram has an acute angle and an obtuse angle, even though the through hole is formed in the obtuse portion, the distance between the moving part 31 and the fixed part 32 can be changed by the circular motion of the through holes. If present, a through hole may be formed in the obtuse portion.

In this case, stopper plates 38a and 38b fixed to a part of the moving part 31 or the moving part 31, or stopper plates 38a fixed to a part of the fixing part 32 or the fixing part 32. The part in contact with 38b) may be at least one side of the parallelogram of the pivoting bar 33. That is, when the stopper plates 38a and 38b are formed at positions different from those of the upper plate of the moving part 31 or the lower plate of the fixing part 32, the movement is restricted at the contact position.

In this case, when the moving part 31 and the fixing part 32 are moved relative to each other by the elastic force of the elastic member 36, the maximum separation distance by the pivoting bar 33 is the distance between the through holes. do. Although not shown, the tip is rotated to the right side more than the state shown in FIG. 5A, and the moving part 31 and the fixing part 32 become the maximum separation distance, and the rotating bar The upper surface inclined downward of the parallelogram of (33) is separated from the lower surface of the upper plate of the moving part 31.

In addition, even if the moving part 31 and the fixing part 32 are approached by an external force, the rotating bar 33 is inverted so that a pair of parallel surfaces are horizontal to the upper surface of the lower plate of the fixing part 32. When contacted, no further conduction occurs, so the separation distance at this time becomes the minimum separation distance. That is, when the separation distance between the moving part 31 and the fixing part 32 is reduced by external force, the pivoting bar 33 is pivoted so that its tip moves to the left, so that the state of FIG. As a result, the horizontal upper surface of the parallelogram of the pivoting bar 33 is prevented from being rotated further by contacting the lower surface of the upper plate of the moving part 31, and the minimum separation distance is surely regulated.

Accordingly, the pivoting bar 33 is configured such that its upper end stands only from the left side to the right side of the drawing, or is only turned from the right side to the left side. Therefore, the conduction and standing directions are certainly regulated. The rotating bar 33 functions as a maximum spaced stopper and a minimum spaced stopper.

As described above, separate stopper plates 38a and 38b for restricting the rotation of the rotation bar 33 may be formed and fixed to the movement part 31 or the fixing part 32. The stopper plates 38a and 38b may be provided only on either the moving part 31 or the fixing part 32. The example is demonstrated.

8 is a cross-sectional view and a side view for explaining the rotation bar and the stopper plate of the sensing unit constituting the safety mechanism for aerial platform according to the present invention.

A stopper plate (Fig. 8 (a)) 38a, 38b provided in the upper plate of the parallelogram of the said rotation bar 33 on the upper board of the movement part 31, or the stopper provided in the downward side plate of the movement part 31. FIG. A stopper plate (FIG. 8) provided in contact with the lower surfaces of the plates ((b) of FIG. 8) 38a, 38b, or on the lower plate of the fixing portion 32 by a lower surface which becomes horizontal with the parallelogram of the pivoting bar 33. (A)) 38a, 38b or the upper surface of the stopper plate (FIG. 8 (b)) 38a, 38b provided on the upper side plate of the fixing part 32, so as to constitute the maximum spaced stopper. It is.

However, the present invention is not limited to the contact of the horizontal portion of the rotation bar 33. A stopper plate (not shown) formed at any one of an upper surface and a lower surface of the pivoting bar 33 shown in FIG. It is apparent that the same result can be obtained even if it comes into contact with a stopper plate (not shown) which is fixedly fixed to the government part 32. That is, in regulating the separation distance between the movement part 31 and the fixing part 32, to regulate the movement of the rotation bar 33 which is rotatably connected by the rotation shafts 34 and 35 therebetween. It is a feature of the present invention to be constructed.

Thus, the above-mentioned rotation bar 33 is a side shape formed in parallelogram. However, the side shape of the rotation bar 33 is not limited to the parallelogram. This structural example is demonstrated.

Fig. 6 is a side view (view from the vertical direction in the length direction) for explaining the configuration and operation of a modification of the rotation bar of the sensing unit that constitutes the safety mechanism for aerial platform according to the present invention.

The combined rotation bar 33a having the maximum spaced stopper and the minimum spaced stopper function may be formed so that the shape seen in the vertical direction of the standing or falling direction becomes parallel hexagonal deformation. The parallel hexagonal shape means a hexagonal shape in which opposite sides are parallel to each other. At this time, the through hole should be formed in the opposite obtuse portion of the parallel hexagon.

At least one of the neighboring sides forming the obtuse angle at which the through hole is formed is a stopper plate 38a fixed to a part of the moving part 31 or the moving part 31 when the pivoting bar 33a stands up. 38b), or a part of the said fixing part 32 or the stopper plate 38a, 38b which is fixed to the said fixing part 32, and a movement is regulated. In the example of FIG. 6, when the pivoting bar 33a stands, the upper and lower parallel first stopper surfaces a contact the lower surface of the upper plate of the moving part 31 and the upper surface of the lower plate of the fixing part 32, respectively. To regulate your exercise. Then, the maximum spaced stopper is configured.

And at least one of the neighboring sides which form the obtuse angle in which the said through hole was formed, At least one side of the parallel hexagonal deformation of the said rotational bar 33a is the said moving part at the time of the said rotational bar 33a overturning. A part of the 31 or a stopper plate 38a, 38b fixed to the moving part 31, or a part of the fixing part 32 or a stopper plate 38a, 38b fixed to the fixing part 32 Exercise is regulated. In the example of FIG. 6, when the pivoting bar 33a is inverted, the second stopper surfaces b formed on the upper and lower parallel first stopper surfaces a are respectively formed on the lower surface of the upper plate of the moving part 31 and the upper surface. The movement is restricted by contact with the upper surface of the lower plate of the fixing part 32. And, by this, the minimum spaced stopper is configured.

FIG. 7 is a cross-sectional view illustrating the structure and operation of the sensing unit and the binding unit constituting the safety platform for aerial platform according to the present invention (cut in the vertical direction in the longitudinal direction and viewed in the longitudinal direction). FIG.

From (a) and (b) of FIG. 7, it is possible to understand the separation approach operation of the safety mechanism 100 of the present invention described with reference to FIG. 5. Here, the space is partitioned by the movement part 31 and the fixing part 32, the pivoting bar 33 is installed inside the space, the elastic member 36 and the sensor 37 outside the space You can see that it is installed. However, the present invention is not limited thereto, and as described below, the pivoting bar 33, the elastic member 36, and the sensor 37 may be freely installed inside or outside the space.

On the other hand, when mounting a long length or a wide area, it may be necessary to remove the safety mechanism 100 of the present invention at all. In this case, if the safety mechanism 100 is completely removed from the aerial platform 200, it may not only take time to remount, but may also cause problems in management such as loss. Therefore, there is a need for a configuration capable of loading a long or wide object without leaving it completely.

To this end, as shown in (c) of FIG. 7, to rotate the sensing unit 30 with respect to the binding unit 50, so that the fixing unit 32 can be folded inside or outside the aerial platform 200, the fixing unit 32. ) And the binding portion 50, the hinge 52 and the removable portion 53 can be configured to be provided. That is, at one side between the fixing part 32 and the binding part 50, a hinge 52 is provided to allow the sensing part 30 to be inverted, and on the other side, the hinge 52 A detachable part 53 is provided to fix the fixing part 32 to the binding part 50 by restricting conduction.

Here, as can be seen from the enlarged view of FIG. 7A, the detachable portion 53 inserts the pin 55 into the hole of the frame 54 fixed to the fixing portion 32, for example. The front end of the pin 55 may be inserted into and released from a hole 58 or a groove formed in a part of the fastening part 50, and the stopper 57 of the frame 54 and the pin 55 may be inserted into and released from each other. The pin 55 may be inserted into the hole 58 in a state where no force is applied by the elastic force of the spring 56 regulated by the spring 56.

As described above, the elastic member 36 of the sensing unit 30 may be provided outside the space partitioned by the moving unit 31 and the fixing unit 32, but may be provided inside. This will be described.

9 is a cross-sectional view and a side view for explaining the elastic member of the sensing unit constituting the safety platform for aerial platform of the present invention.

First, the elastic member 36 is a spring 36a installed between the moving part 31 and the fixing part 32, as shown in FIG. 9 (a), which may be a compression spring or a tension spring. That is, as shown in FIG. 9B, the distance between the moving part 31 and the fixing part 32 is spaced apart by the compression spring 36b, or the fixing part 32 is compressed by the compression spring 36c. ) And a force that spaces the distance between the pivot pin of the moving part 31 may be applied.

Alternatively, as shown in (c) of FIG. 9, the fixing part 32 and the moving part 31 are rotated by the tension spring 36d using a structure such as a wire or a rod-like member (for example, the pivoting bar 33). The distance between the pins may be approached or a force may be applied to approach the distance between the moving part 31 and the fixed part 32 by the tension spring 36e. In addition, of course, you may use well-known elastic means, such as a rubber band and an air cylinder, instead of a spring.

In particular, when a rod-like member such as the rotation bar 33 is provided, as shown in FIG. 9D, the spring 36f as the elastic member 36 can be directly connected to the rotation bar 33. . In this case, the elastic member 36 may be a compression spring or a tension spring. That is, as shown in (e) of FIG. 9, the compression springs 36g, 36h, 36i are pressed in a direction to resist the conduction of the rotation bar 33 between the fixing portion 32 and the rotation bar 33. Alternatively, the compression spring 36j may press between the fixing part 32 and the rotation bar 33 in a direction to resist lifting of the rear end caused by the conduction of the rotation bar 33. The compression spring may be provided between the movement part 31 and the rotation bar 33.

Alternatively, the tension spring 36k may extend the resistance of the rotation bar 33 between the fixing part 32 and the rotation bar 33. The tension spring may be provided between the movement part 31 and the rotation bar 33.

The sensor 37 may also be provided inside the space partitioned by the moving part 31 and the fixing part 32, or may be provided outside.

10 is a cross-sectional view and a side view for explaining the sensor of the sensing unit constituting the safety platform for aerial platform of the present invention.

First, the sensor 37 may be installed in the movement part 31 or the fixing part 32. At this time, the detection of the sensor 37, as shown in (a) and (b) of Figure 10, when the sensor 37 is installed in the moving part 31, the front end of the sensor 37 is the fixed portion ( In the case where the sensor 37 is provided in the fixing portion 32, for example, by contacting an end portion of the upper side plate of the fixing portion 32, for example, (c) and (d) of FIG. The tip of the sensor 37 is made by contacting a part of the moving part 31, for example, a lower surface of the upper plate of the moving part 31, or a pivot pin on the side of the moving part 31.

On the other hand, when provided with the rotating bar 33, the sensor 37 may be detected according to the movement of the rotating bar 33. At this time, the sensor 37 is installed in the movement part 31 to be detected by the rotation bar 33 (not shown) or as shown in (e), (f), (g) of FIG. Likewise, it is installed on the fixing part 32 to be detected by the rotating bar 33 or installed on the rotating bar 33 so as to be detected by the moving part 31 or the fixing part 32 (not shown). ) Can be installed.

As mentioned above, although this invention was demonstrated based on the specific Example, it is not limited to this, In the case of a change and a deformation | transformation which are performed by those skilled in the art from the content described in the claim, depending on the equality of the range of this invention, It must be interpreted to belong.

INDUSTRIAL APPLICABILITY The present invention is useful in an industry that manufactures and sells safety mechanisms that prevent stenosis and prevent hand pinch and the like in an aerial platform.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows the use condition which attached the safety platform for aerial platforms of this invention to the aerial platform.

2 is a perspective view of the safety platform for aerial platform of the present invention.

3 is a plan view for explaining the operation of the contact portion constituting the safety platform for aerial platform of the present invention.

4 is a perspective view for explaining a state in which the contact portion constituting the safety platform for aerial platform of the present invention is extended in the longitudinal direction, the horizontal bar is folded.

Fig. 5 is a side view (view from the vertical direction in the length direction) for explaining the configuration and operation of the sensing unit constituting the safety platform for aerial platform of the present invention.

Fig. 6 is a side view (view from the vertical direction in the length direction) for explaining the configuration and operation of a modification of the rotation bar of the sensing unit that constitutes the safety mechanism for aerial platform according to the present invention.

FIG. 7 is a cross-sectional view illustrating the structure and operation of the sensing unit and the binding unit constituting the safety platform for aerial platform according to the present invention (cut in the vertical direction in the longitudinal direction and viewed in the longitudinal direction). FIG.

8 is a cross-sectional view and a side view for explaining the rotation bar and the stopper plate of the sensing unit constituting the safety mechanism for aerial platform according to the present invention.

9 is a cross-sectional view and a side view for explaining the elastic member of the sensing unit constituting the safety platform for aerial platform of the present invention.

10 is a cross-sectional view and a side view for explaining the sensor of the sensing unit constituting the safety platform for aerial platform of the present invention.

It is a perspective view which shows the conventional aerial platform.

Claims (19)

In the safety mechanism for preventing excessive rise of the work platform to be elevated using the lifting mechanism mounted on the moving mechanism, Predetermined maximum distance and the moving part to contact each other between the minimum separation distance movement fixing, and by an external force, the motion part and that when the spacing between the state wherein a minimum separation distance of the signal to stop the lift sphere rising operation A sensing unit having a sensor for generating a; And a binding unit for detachably fixing the fixing unit of the sensing unit to the upper end of the work table, The detection unit, the elastic member for applying an elastic force in the direction of separating the moving portion and the fixed portion, the maximum separation stopper for limiting the maximum separation distance by the elastic force, and to regulate the minimum separation distance by the external force against the elastic force Equipped with a minimum distance stopper , The moving part comprises a top plate subjected to the external force and a downward side plate formed extending downward from the edge of the top plate , The fixing unit is composed of a lower plate and fixed to the engagement portion, the up-side is formed extending upward from the edge of the lower plate, Safety mechanism for aerial platform, characterized in that the lower side plate of the movement portion and the upper side plate of the fixing portion is installed so as to slide in close contact with each other. The method according to claim 1, On the movement portion , a contact portion is further provided, The contact portion, Main body vertical bar formed in a long shape, Safety mechanism for aerial platform characterized in that it comprises a main body horizontal bar mounted to the end of the main body vertical bar. The method according to claim 2, The main body horizontal bar, It is provided with a hinge connected to the main body vertical bar so as to be rotatable, The other end is provided with a coupler for engaging with the other main body vertical bar, Safety mechanism for aerial platform, characterized in that the coupling portion is coupled to the end of the main body vertical bar, the coupling portion is coupled to the coupling. The method according to claim 3, Safety mechanism for aerial platform, characterized in that the magnet is provided in the vicinity of the coupler of the main body horizontal bar to be magnetically attached to the main body vertical bar when folded. The method according to claim 2, The contact portion, An extended vertical bar extending from the main body vertical bar , Safety platform for aerial platform, characterized in that provided with an expansion horizontal bar mounted to the end of the expansion vertical bar. The method according to claim 5, The extended horizontal bar, It is provided with a hinge connected to the expansion vertical bar rotatably at one end , The other end is provided with a coupler for engaging with the other extension vertical bar, Safety mechanism for aerial platform, characterized in that the coupling is coupled to the end of the relative extension vertical bar is coupled, the coupling is coupled with the coupling. The method according to claim 6, Safety mechanism for aerial platform, characterized in that the magnet is provided to be magnetically attached to the main body vertical bar or the expansion vertical bar in the vicinity of the engaging port of the expansion horizontal bar. The method according to claim 1, Rotating shafts are respectively installed on the moving part and the fixed part, Each rotation shaft is provided with a rotation bar through which the rotation shaft penetrates, and a distance between the through holes is longer than the width so that the rotation bar is erected or moved in accordance with the relative movement of the movement part and the fixing part. Safety equipment for aerial platforms. The method according to claim 8, The moving part and the fixed part are each formed in an elongated shape , Safety mechanism for aerial platform, characterized in that provided in the longitudinal direction according to the shape of the moving portion and the fixed portion, a plurality of sets of each of the rotation shaft and the rotation bar. The method according to claim 8, When the pivoting bar stands up , the movement is restricted by contacting a part of the moving part or a stopper plate fixed to the moving part, or a part of the fixing part or a stopper plate fixed to the fixed part. Thereby the safety mechanism for aerial platform, characterized in that the maximum spaced stopper is configured. The method according to claim 8, The pivoting bars are in contact at the time of conduction, the stopper plate portion of the moving part or formed fixed to the moving part, or with the high portion or the stopper plate is formed and fixed in the state of the state and movement is regulated, Thereby the safety mechanism for aerial platform, characterized in that the minimum spaced stopper is configured. The method according to claim 10, The pivoting bar is formed such that the shape seen in the vertical direction of the standing or falling direction becomes a parallelogram , the parallelogram does not have a right angle, and the lengths of two neighboring sides are different. The through-holes are formed in opposing obtuse portions of the parallelogram, and diagonal lines connecting the obtuse angles are between vertical lines passing through the through-holes, A part of the moving part or the stopper plate fixed to the moving part, or the part of the fixed part or the contact portion fixed to the stopper plate is fixed, characterized in that at least one side of the parallelogram of the rotating bar Substitute safety mechanism. The method according to claim 11, The pivoting bar is formed such that the shape seen in the vertical direction of the standing or falling direction becomes a parallelogram , The through hole is formed at the position where the maximum separation distance is made when the imaginary line connecting the through holes becomes vertical , and the minimum separation distance when the pair of parallel sides of the parallelogram becomes horizontal. , A part of the moving part or the stopper plate fixed to the moving part, or the part of the fixed part or the contact portion fixed to the stopper plate is fixed, characterized in that at least one side of the parallelogram of the rotating bar Substitute safety mechanism. The method according to claim 1, Between the fixing part and the binding part, a hinge is provided on one side to allow the sensing part to be conducted, and on the other side, a detachable part for fixing the fixing part to the binding part by restricting the conduction by the hinge. Safety mechanism for aerial platform, characterized in that the provided. The method according to claim 1, The elastic member is a safety mechanism for aerial platform, characterized in that the compression spring or tension spring installed between the moving portion and the fixed portion. The method according to claim 8, The elastic member is a safety mechanism for aerial platform, characterized in that the compression spring or tension spring installed between the movement portion and the rotation bar, or between the fixed portion and the rotation bar. The method according to claim 1, The sensor is a safety mechanism for aerial platform, characterized in that installed in the moving portion or the fixed portion. The method according to claim 8, The sensor is a safety mechanism for aerial platform, characterized in that installed on the moving part or the fixed part or the rotating bar. The method according to claim 8, The pivoting bar is formed so that the shape seen in the vertical direction of the rising or falling direction is parallel hexagonal deformation , The through hole is formed in an opposite obtuse portion of the parallel hexagonal shape, At least one of the neighboring sides forming the obtuse angle with the through hole formed therein is a stopper plate fixed to a part of the moving part or the moving part when the pivoting bar stands , or a part of the fixing part or the fixing part. The movement is regulated in contact with the fixedly formed stopper plate, This constitutes the maximum spaced stopper , The other sides of the adjacent sides to form an obtuse angle, at least two said through-holes have been formed is, at the time of conduction of the pivoting bars, a stopper plate formed fixed to the part or the moving part of the motion part, or the high portion or the fixed part of the government The movement is regulated by contact with the stopper plate fixed to the Thereby the safety mechanism for aerial platform, characterized in that the minimum spaced stopper is configured.

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