JP2021109738A - Work bench for aerial work platform vehicle - Google Patents

Abstract

To provide a work bench for an aerial work platform vehicle in that the same work bench can be attached to buckets having different sizes.SOLUTION: A work bench for an aerial work platform vehicle includes: a base 10 that can be attached to each of buckets of the aerial work platform vehicle having different sizes; an extensible/contractible part 20 that is freely extensible/contractible in a height direction connected to the base 10; and a work bench 30 whose bottom connected to the extensible/contractible part 20 has a rectangular planar shape. The base 10 is mounted on one side of the bucket. One side of the work bench 30 is fixed with a hinge at each of positions where short sides of the rectangle face each other. The work bench incudes a fusion folder table whose protrusion part, which is fitted to a recessed part of a fusion folder of an optical fiber, faces upward when the other end is inclined inward.SELECTED DRAWING: Figure 1

Description

The present invention relates to a work platform for aerial work platforms to be mounted on a bucket of an aerial work platform.

The aerial work platform is a special vehicle equipped with a mechanism for performing work at a high place, and is sometimes called a lift vehicle. This aerial work platform is equipped with a crane-like boom, and a bucket for carrying workers is attached to the tip of the boom. The worker rides on a bucket and engages in work at a high place.

The bucket is simply a basket on which people can be placed, and is not provided with a work table or the like for placing tools or the like necessary for the work. Therefore, conventionally, a portable work table used in a state where a belt is hung on the shoulder of the worker and supported by the chest has been used (Non-Patent Document 1).

NTT Rental Engineering Co., Ltd., Product Information [Searched on December 18, 1991], Internet (URL: https://www.nttrec.co.jp/product/category010107/11128800)

However, portable worktables are unstable. When the worker changes his / her posture on the bucket, the work table shakes, causing safety problems such as dropping parts and tools on the work table. There is also a problem that workability is poor due to instability.

In order to solve these problems, a method of attaching a work table to a bucket can be considered, but there is also a problem that there are multiple types of buckets having different sizes and the same work table cannot be attached. As described above, conventionally, there is a problem that there is no work table suitable for use in aerial work platforms.

The present invention has been made in view of this problem, and an object of the present invention is to provide a work platform for aerial work platforms in which the same work table can be attached to buckets of different sizes.

The work platform for aerial work platforms according to one aspect of the present invention includes a pedestal that can be attached to a bucket of an aerial work platform, a telescopic portion that is connected to the pedestal and that can be expanded and contracted in the height direction, and the telescopic portion. The gist is to have a workbench to be connected.

According to the present invention, it is possible to provide a work platform for aerial work platforms in which the same work table can be attached to buckets of different sizes.

It is a perspective view which shows one aspect of the work platform for aerial work platforms which concerns on embodiment of this invention. It is a perspective view which shows the work table for the aerial work platform of another aspect which concerns on embodiment of this invention. It is a figure which shows typically the appearance of a small bucket and a large bucket. It is a side view which shows the state which the pedestal which concerns on embodiment of this invention is attached to a bucket, (a) is the figure which attached the pedestal shown in FIG. It is a figure attached to. It is a side view which shows the state which attached the telescopic part and the work table to the pedestal shown in FIG. 1 (b). It is a figure which shows typically the state which put the object on the work table shown in FIG. It is a perspective view which shows typically the aerial work platform work table shown in FIG. Is rotated 90 degrees and viewed from diagonally above.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same objects in a plurality of drawings, and the description is not repeated.

FIG. 1 is a perspective view showing one aspect of a work platform for aerial work platforms according to an embodiment of the present invention. The aerial work platform 100 shown in FIG. 1 includes a pedestal 10, a telescopic portion 20, and a work platform 30.

FIG. 1A shows a work platform 100 for aerial work platforms when the telescopic portion 20 is contracted. FIG. 1B shows only the pedestal 10.

The work table 30 has a rectangular bottom 30a. The circumference of the workbench 30 is surrounded by a wall so that an object does not fall from the workbench 30.

FIG. 1A shows a work platform 100 for aerial work platforms in a state where the telescopic portion 20 is contracted to the lowest position. Further, a configuration example in which the workbench 30 and the telescopic portion 20 are integrated is shown.

To attach the work table 30 and the telescopic portion 20 to the pedestal 10, the bottom plate 28 to which one end of the telescopic portion 20 is connected to the spacers 12a to 12d provided on the top plate 11 of the pedestal 10 is attached with four screws 21a to. This is done by fixing at 21d.

FIG. 2 is a perspective view showing another aspect of the aerial work platform according to the embodiment of the present invention. FIG. 2 is a diagram corresponding to FIG. 1, and as is clear from the reference numerals, only the pedestal 40 is different from the aerial work platform 100. The attachment of the integrated work table 30 and the telescopic portion 20 to the pedestal 40 is the same as in FIG.

The pedestal 10 shown in FIG. 1 and the pedestal 40 shown in FIG. 2 differ in the method of fixing to the bucket. The fixing method will be described later.

As described above, the aerial work platform 100 according to the present embodiment has pedestals 10 and 40 that can be attached to buckets of different sizes of the aerial work platforms and heights that are connected to the pedestals 10 and 40, respectively. A telescopic portion 20 that can be expanded and contracted in the longitudinal direction and a work table 30 having a rectangular bottom surface connected to the telescopic portion 20 are provided. As a result, the same workbench 30 can be attached to buckets of different sizes.

(bucket)
FIG. 3 is a perspective view showing the appearance of buckets of different sizes. FIG. 3 (a) shows a small bucket, and FIG. 3 (b) shows a large bucket.

The small bucket 200 shown in FIG. 3A is, for example, a bucket for an aerial work platform of a light vehicle, and is large enough to accommodate one worker. Here, the vertical direction is defined as z, the left-right direction is defined as x, and the depth direction is defined as y.

As shown in FIG. 3A, in the small bucket 200, four pipes 202a to 202d are extended from the work floor 201 in the z direction to form a bucket frame. The upper ends of the four pipes 202a to 202d are connected by a square-shaped pipe 203 having the same thickness. The four pipes 202a to 202d are connected in a U shape with the front side open by pipes of the same thickness near the center in the z direction.

The worker gets on the work floor 201 from the open front side of the U-shape. An operation box (not shown) that changes the position of the small bucket 200 in the three axial directions is arranged in front of the worker who got in. For the purpose of preventing erroneous operation of the operation box, the pipe is smaller than the pipe diameter constituting the frame of the small bucket 200, and the guard 204 is provided in parallel (x direction) on the front side of the frame.

The pedestal 10 according to the present embodiment is attached between the pipe 203 having a flat plane and the guard 204. The description of the mounting portion will be described later.

The large bucket 300 shown in FIG. 3B is a bucket for aerial work platforms larger than a light vehicle. The large bucket 300 is, for example, about twice as large as the small bucket 200 and is large enough to accommodate two workers.

The large bucket 300 is integrally molded with fiber reinforced plastic (FRP) and has a shape similar to that of a bathtub. The edge 302 of the opening 301 of the large bucket 300 has a shape protruding outward and has strength.

The pedestal 40 according to the present embodiment is attached so as to sandwich the edge 302. Next, the mounting portions of the pedestals 10 and 40 will be described.

(pedestal)
The configuration of the mounting portions of the pedestals 10 and 40 will be described with reference to FIG. FIG. 4A shows a side view of the mounting portion of the pedestal 10.

As shown in FIG. 4A, the pedestal 10 is attached to the pipe 203 and the guard 204 at the upper end of the small bucket 200. On the pipe 203 side of the back surface 11b of the top plate 11, the side surface seen in the x direction with the outside open is L-shaped, and the upper end portion of the L-shape is extended parallel to the back surface 11b of the top plate 11. A fitting plate 13 having a shape is attached. The fitting plate 13 is attached to the back surface 11b of the top plate 11 by welding or screws (not shown). The fitting plate 13 is fitted so that the L-shaped vertical portion abuts on the pipe 203.

The mounting plates 14 are mounted in the vertical direction (−z) from the back surface 11b at intervals of the guards 204 from the fitting plate 13 in the y direction. The tip portion of the mounting plate 14 has a U-shape with an opening at the bottom, and the U-shape is the size at which the pipe diameter of the guard 204 fits.

The height of the U-shaped opening of the mounting plate 14 is the height at which the top plate 11 becomes horizontal with the fitting plate 13 fitted to the pipe 203. A fulcrum 15a for rotating the lever 15 is provided on the side surface of the mounting plate 14 on the back surface 11b side, and the lever 15 is urged inward (y direction) by a spring (not shown).

In the pedestal 10, the fitting plate 13 is fitted into the pipe 203 of the small bucket 100, and the front side is pushed downward with the pipe 203 as a fulcrum. The portion 15b is hooked and fixed to the guard 204.

FIG. 4B shows a side view of a mounting portion of the pedestal 40 mounted on the large bucket 300. A U-shaped fixing portion 41 straddling the edge 302 of the large bucket 300 is attached to the back surface 11b of the top plate 11 of the pedestal 40. A columnar bush 41c is attached to the tip of the U-shaped outer wall 41a. A fixing screw 41d is inserted through the inner wall 41b of the fixing portion 41 facing the bush 41c. A rubber member 41e forming a surface is attached to the tip of the fixing screw 41d, and the distance between the tip surface of the rubber member 41e and the tip surface of the bush 41c changes depending on the degree of tightening of the fixing screw 41d.

The fixing portion 42 having the same shape as the fixing portion 41 is attached to the back surface 11b in the −x direction. The structure of the fixed portion 42 is the same as that of the fixed portion 41.

The pedestal 40 is placed on the edge 302 of the large bucket 300 with the fixing screws 41d and 42d loosened, and then the fixing screws 41d and 42d are tightened and fixed. The distance between the tip surface of the rubber member 41e and the tip surface of the bush 41c is set to a size equal to or larger than the width of the edge 302 of the large bucket 300 to be mounted. By doing so, it can be attached to each of the plurality of large buckets 300 targeting the pedestal 40.

(Expandable part)
FIG. 5 is a view showing a side surface of the aerial work platform 100 in a state where the telescopic portion 20 is extended to the maximum in the height direction. As shown in FIG. 5, the telescopic portion 20 includes an upper fixing member 21 fixed to the back surface of the work table 30, a lower fixing member 22 fixed to the top plate 11 of the pedestal 10, and an upper fixing member 21 and lower fixing. Elongated plates 23, 24 of the same length connected to the member 22 are provided.

The telescopic portion 20 includes each member having the same configuration at the end portion on the back side (−x) of the work table 30. The action of the expansion / contraction portion 20 on the back side is the same as that on the front side.

The elongated plates (hereinafter referred to as plates) 23 and 24 are used in combination with the center in the length direction in an X shape with a common axis 25. The upper end of one plate 23 is fixed to the fulcrum 21a of the worker-side end of the upper fixing member 21. The lower end of the other plate 24. The lower fixing member 22 is fixed to the fulcrum 22a at the end on the worker side.

The lower end of one plate 23 can be moved in the y direction about the fulcrum 21a. Further, the upper end portion of the other plate 24 can be moved in the y direction about the fulcrum 22a.

The upper end of the other plate 24 is fixed so that it can move along the long slit 26 in the y direction of the upper fixing member 21. Further, the lower end portion of one plate 23 fits the shaft 22b into a plurality of recesses 27a provided at predetermined intervals on the lower side (pedestal 10 side) of the long slit 27 in the y direction of the lower fixing member 22. Is fixed.

FIG. 5 shows an example in which the work table 30 in which the shaft 22b is fitted in the recess 27 closest to the operator and one of the plates 23 is fixed is the highest. When the shaft 22b is fitted into the recess 27 at a position away from the operator and one of the plates 23 is fixed, the X-shaped vertically opposed angles are opened and the height of the workbench 30 is lowered. When the shaft 22b of one plate 23 is fitted and fixed in the outermost recess 27 of the slit 27 (in the −y direction), the height of the work table 30 is the lowest, and the lower end of the upper fixing member 21 is the lower fixing member 22. Contact the upper end of (Fig. 1 (a)).

The member shown by the broken line so as to surround the common shaft 25 suddenly widens the X-shaped vertically facing angle when the shaft 22b at the lower end of one plate 23 is removed from the recess 27. It is a damper (reference code omitted) to prevent the above. The damper may be omitted.

(Workbench)
FIG. 6 is a diagram schematically showing a state in which an object is placed on the workbench 30. FIG. 6 is a view in which the fusion splicer 500, the optical fiber cutter 510, and the coating stripper 520 are placed on the work table 30.

The cover 50 covering these instruments is made of, for example, a transparent vinyl material. The cover 50 will be described later.

The fusion splicer 500 is a device for fusing and connecting the tips of two optical fibers (not shown) fixed to two fusion folders (not shown). The fuser 500 also has a function of attaching a thermosetting coating (thermosetting sleeve) to the fused portion so that the fused optical fiber does not break.

The fusion folder is used to hold the core wire of the optical fiber for fusion. The fusion folder is a standard one that conforms to the standard.

The optical fiber cutter 510 sharply cuts the tip portion of the optical fiber. The coating stripping device 520 strips the coating of the optical fiber. These devices are used for the optical fiber connection work.

The workbench 30 is arranged along its long side in the extending direction of the optical fiber. One end of the workbench 30 is fixed to each of the opposite positions of the short sides of the rectangle with a hinge 32, and when the other end is tilted inward, the convex portion 31b that fits with the concave portion of the fusion folder of the optical fiber is on the top. It is provided with facing fusion folder stands 31a and 31b.

The fusion folder stands 31a and 31b are stands for temporarily placing the fusion folders in the process of fusing the optical fibers. In the fusion folder pedestals 31a and 31b, fusion folders to which one and the other optical fibers to be fused are fixed are placed, respectively. Alternatively, fusion folder stands 31a and 31b holding the connected optical fibers after fusion are placed at the same time.

An optical fiber fixed to the fusion folder is placed in the recess of the fusion folder by fitting the convex portions 32 of the fusion folder stands 31a and 31b. As a result, even if the optical fiber is pulled by tension, the fused folder does not easily come off and the core wire of the optical fiber is not cut.

The fusion folder pedestals 31a and 31b are aligned with the outside of the workbench 30 when tilted outward, so that the space of the workbench 30 can be widened. Thereby, the workability of the work other than the fusion work can be improved.

(cover)
FIG. 7 is a diagram for explaining a method of fixing the cover 50. (A) is a view of the cover 50 turned toward the front and viewed from diagonally above. (B) is a view of the aerial work platform 100 in the state of (a) rotated 90 degrees and viewed from diagonally above.

As shown in FIG. 7B, magnets 60 are attached to both outer sides of the front side surface of the workbench 30. A short metal 50a (for example, SUS304) integrated with the cover 50 with, for example, double-sided tape (not shown) is magnetically attracted and fixed to the magnet 60.

As shown in FIG. 7A, when working, the unfixed end of the cover 50 is turned toward the front. Further, as shown in FIG. 6, if the end portion thereof is moved to the inner side of the work table 30, the cover 50 can cover the entire surface of the work table 30. Therefore, the cover 50 can be used as a rain cover for rain protection.

Here, by providing the magnet 60 on the outside of the long side of the work table 30, the cover 50 can be used as a storage cover for parts and tools. The cover 50 may wrap only the work table 30. By doing so, the cover 50 makes it easy to carry the parts and tools on the workbench 30.

Further, the cover 50 may be configured to cover the entire work platform 100 for aerial work platforms in which the work table 30, the telescopic portion 20, and the pedestals 10 and 40 are integrated. In that case, the magnet for fixing one end of the cover 50 is provided, for example, on the back surface 11b of the top plate 11 of the pedestal 10.

As described above, one side of the cover 50 is fixed to the outside of the rectangle of the work table 30, covers the work table 30 and bends it so as to abut the other long side, and the back surface of the work table 30 or the work table 30 is attached. It is made of a soft material whose other side is fixed by the back surface 11b of the pedestals 10, 40. As a result, the cover 50 can be used as a storage cover and a rain cover.

As described above, the aerial work platform 100 according to the present embodiment includes pedestals 10, 40 and pedestals 10, 40, which can be attached to buckets 200 and 300 having different sizes of the aerial work platforms, respectively. A telescopic portion 20 that can be expanded and contracted in the height direction to be connected, and a work table 30 that is connected to the telescopic portion 20 and has a rectangular bottom surface. As a result, the same workbench 30 can be attached to buckets of different sizes. Further, since the height of the work table 30 can be adjusted, workability can be improved.

Further, the pedestals 10 and 40 are attached to one side of the buckets 200 and 300, and one end of the work table 30 is fixed to each of the opposite positions of the rectangular short sides of the work table 30 with a hinge 32, and the other end is inside. The fusion folder stands 31a and 31b are provided so that the convex portion 33 that fits with the concave portion of the fusion folder of the optical fiber faces upward when the fiber is tilted. As a result, even if the optical fiber is pulled by tension, the fused folder does not easily come off and the core wire of the optical fiber is not cut.
Further, since the fused folder stands 31a and 31b are tilted outward along the outside of the workbench 30, the space of the workbench 30 can be widened. This makes it possible to improve workability.

Further, one side is fixed to the outside of the long side of the rectangle of the workbench 30, the workbench 30 is covered, and the workbench 30 is brought into contact with another long side to be curved, and the back surface of the workbench 30 or the workbench 30 is attached. A cover 50 made of a soft material whose other side is fixed to the back surfaces 11b of the pedestals 10 and 40 is provided. As a result, the cover 50 can be used as a storage cover and a rain cover, and workability can be improved.

The above embodiment has been described with an example in which an object in which the telescopic portion 20 and the work table 30 are integrated is fixed to the top plates 11 of the pedestals 10 and 40 with four screws 29a to 29d, but the present invention has been described. Is not limited to this example. For example, an object in which the telescopic portion 20 and the pedestals 10 and 40 are integrated may be fixed to the back side of the bottom plate of the work table 30.

Further, although the fusion folder stand 31a and 31b are arranged on the opposite short side of the outer long side of the workbench 30, the present invention is not limited to this example. The fusion splicing folder stands 31a and 31b may be arranged on the opposite short side portions on the long side side inside the work table 30.

As described above, the present invention includes various embodiments not described here. Therefore, the technical scope of the present invention is defined only by the matters specifying the invention relating to the reasonable claims from the above description.

10,40: Pedestal 20: Telescopic part 30: Worktable 50: Cover 50a: Metal 60: Magnet

Claims (3)

A pedestal that can be attached to the bucket of an aerial work platform,
An elastic part that can be expanded and contracted in the height direction connected to the pedestal,
A work platform for aerial work platforms, which comprises a work table connected to the telescopic portion. The pedestal is attached to one side of the bucket and
The workbench is rectangular, and one end is hinged to each of the opposite positions on the short side of the rectangle, and when the other end is tilted inward, a convex portion that fits into the concave portion of the fusion filing folder of the optical fiber. The work platform for aerial work platforms according to claim 1, wherein the work table is provided with a fusion folder table facing upward. One side is fixed to the outside of the long side of the rectangle of the workbench, the workbench is covered, and the workbench is abutted against the other long side to be curved, and the back surface of the workbench or the pedestal to which the workbench is attached is attached. The aerial work platform according to claim 1 or 2, further comprising a cover made of a soft material to which the other side is fixed on the back surface of the aerial work platform.

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