JP7626732B2 - Lifting platform workbench - Google Patents

Description

The present invention relates to a workbench for a lifting platform device.

Conventionally, handrails have been installed on the periphery of the work floor of the work platform of the lifting platform device (Patent Document 1). When loading the lifting platform device onto the bed of a truck, the handrails are removed from the work floor and stacked on the bottom plate to keep the height of the lifting platform device low and comply with height restrictions on roads, work areas, etc.

JP 2008-56459 A

In Patent Document 1, the handrail is fixed to the work floor with bolts and nuts, and in order to store the handrail, the bolts and nuts that secure the handrail must be released, which is a time-consuming task and raises the risk of losing the bolts and nuts.

Therefore, in order to solve the above-mentioned problems, the present invention aims to provide a work platform for a lifting platform device that allows the height to be adjusted without removing the handrails.

The present invention described in claim 1 is a work platform of a lifting platform device having a plurality of handrails surrounding a work platform, the work platform being provided with a door for opening and closing an entrance to the work platform, the plurality of handrails being freely rotatable between a stored state in which they are folded onto the work platform and a usage state in which they are erected almost perpendicular to the work platform, the plurality of handrails including a first handrail and a second handrail erected in the longitudinal direction of the work platform in the usage state and a third handrail erected in at least one of the shorter directions of the work platform, the first handrail and the second handrail being stored above the third handrail in the stored state, a girder side baseboard being provided at the lower ends of the first handrail and the second handrail, the door including a door body and a door side baseboard that can move up and down relative to the door body, the door side baseboard being fixed at a position higher than the girder side baseboard, and the door body being configured to be foldable together with the second handrail together with the door side baseboard .

The present invention as defined in claim 2 is characterized in that the third handrail is stored in a space formed between the opposing girder side baseboards.

The present invention described in claim 3 is characterized in that the multiple handrails include a fourth handrail in the short direction of the work floor opposite the third handrail, and the fourth handrail is pivotally attached to either the first handrail or the second handrail, and can be folded up in a state where it overlaps either the first handrail or the second handrail in the stored state.

The present invention described in claim 4 is characterized in that the third handrail and the fourth handrail are provided with a gable side baseboard at their lower ends, and in the stored state, part or all of the gable side baseboard is erected, and the first handrail and the second handrail are supported by the girder side baseboard in the stored state.

The work platform of the lifting platform device of the present invention allows multiple handrails to be folded onto the work platform without removing them from the work platform, making it easy to lower the height of the work platform.

1 is a side view of a lift platform device in use with a handrail raised, showing a first embodiment of the present invention; FIG. 13 is a perspective view of the workbench in use with the handrails raised. FIG. 2 is a perspective view of the workbench in a stored state with the handrails folded up. FIG. 2 is a front view of the workbench in a stored state with the handrails folded up. FIG. 11 is a rear view of the workbench in the stored state with the handrails folded up. FIG. 2 is a left side view of the workbench in a stored state with the handrails folded up. FIG. 3 is a perspective view of the workbench in a state in which the rear handrail is folded down from the state shown in FIG. 2 . FIG. 8 is a perspective view of the workbench in a state where a part of the rear handrail is folded onto the left handrail from the state shown in FIG. 7. FIG. 8 is a perspective view of the workbench in a state where the door-side baseboard is raised from the state shown in FIG. 7 . FIG. 10 is a perspective view of the workbench in the state where the door body and part of the rear handrail are folded onto the left handrail from the state shown in FIG. 9 . FIG. 10 is a perspective view of the work platform in a state where the front handrail is folded onto the right handrail from the state shown in FIG. 9 . FIG. 11 is a perspective view of the workbench in the state where the left handrail is folded down from the state shown in FIG. 10 . FIG. 11 is a side view showing the state in which the lift platform device is loaded onto a truck with the handrails folded and stored.

A preferred embodiment of the present invention will be described with reference to the attached drawings. Note that the embodiment described below does not limit the content of the present invention described in the claims. Furthermore, not all of the configurations described below are necessarily essential requirements of the present invention.

In this embodiment, 1 denotes a lifting platform device, which includes a cart body 2, wheels 3 for traveling, a work platform 4 on which a worker sits, a link mechanism 5 that supports the work platform 4, and a hydraulic cylinder (not shown) as a lifting device for raising and lowering the link mechanism 5. In Figures 2, 3, and 7 to 12, the longitudinal direction of the work platform 4 is the X direction, and the lateral direction is the Y direction. The near side in the X direction is the front side of the work platform 4, and the far side in the X direction is the rear side of the work platform 4. The near side in the Y direction is the left side of the work platform 4, and the far side in the Y direction is the right side of the work platform 4.

The workbench 4 is equipped with a rectangular work floor 6 and a front handrail 7, a rear handrail 8, a left handrail 9, and a right handrail 10 that are erected around the periphery of the work floor 6.

At the four corners of the work floor 6, a right front end column 11, a left front end column 12, a right rear end column 13, and a left rear end column 14 are erected. At the front end 6A, the rear end 6B, the right end 6C, and the left end 6D of the work floor 6, a front baseboard 15, a rear baseboard 16, a right baseboard 17, and a left baseboard 18 are erected. Each baseboard 15-18 is firmly fixed to the work floor 6 by fixing with bolts and nuts, welding, or the like. The front baseboard 15 and the rear baseboard 16 are gable side baseboards provided on the gable side, which is the short direction Y of the work floor 6, and the right baseboard 17 and the left baseboard 18 are girder side baseboards provided on the girder side, which is the long direction X of the work floor 6.

The front baseboard 15 is erected so as to cover only the right side of the front end 6A of the work floor 6, and the opening formed on the left side of the front end 6A of the work floor 6 that is not covered by the front baseboard 15 serves as an entrance 19 to the work floor. The right end of the front baseboard 15 is supported by the right front end column 11, and the left end of the front baseboard 15 is supported by the front support column 20 that defines the aforementioned entrance 19 together with the left front end column 12. The left and right ends of the rear baseboard 16 are supported by the right rear end column 13 and the left rear end column 14. The front and rear ends of the right baseboard 17 are supported by the right front end column 11 and the right rear end column 13. The front and rear ends of the left baseboard 18 are supported by the left front end column 12 and the left rear end column 14.

The front end of the right-side baseboard 17 is provided with a right-side front extension 21 formed by extending upward the upper end of the right-side front post 11. The rear end of the right-side baseboard 17 is provided with a right-side rear extension 22 formed by extending upward the upper end of the right-side rear post 13. The front end of the left-side baseboard 18 is provided with a left-side front extension 23 formed by extending upward the upper end of the left-side front post 12. The rear end of the left-side baseboard 18 is provided with a left-side rear extension 24 formed by extending upward the upper end of the left-side rear post 14.

Here, the right front extension 21 and the left front extension 23 are made of pipe material with a U-shaped cross section arranged so that their opening directions face each other. Similarly, the right rear extension 22 and the left rear extension 24 are made of pipe material with a U-shaped cross section arranged so that their opening directions face each other.

The upper parts of the right front extension 21 and the right rear extension 22 are provided with a right front shaft 25 and a right rear shaft 26 that support the lower part of the right handrail 10 in the vertical direction toward the left. Similarly, the upper parts of the left front extension 23 and the left rear extension 24 are provided with a left front shaft 27 and a left rear shaft 28 that support the lower part of the left handrail 9 in the vertical direction toward the right. The right front extension 21 and the right rear extension 22 are formed to the same length, and the left front extension 23 and the left rear extension 24 are also formed to the same length. Since the right front extension 21 and the right rear extension 22 are formed to be longer than the left front extension 23 and the left rear extension 24, the right front shaft 25 and the right rear shaft 26 are positioned higher than the left front shaft 27 and the left rear shaft 28.

The right handrail 10 is provided with a pair of right front vertical members 29 and right rear vertical members 30, a right upper cross member 31 connecting the upper end of the right front vertical member 29 to the upper end of the right rear vertical member 30, a right lower cross member 32 connecting the middle section of the right front vertical member 29 to the middle section of the right rear vertical member 30, and a reinforcing member 33 installed between the right upper cross member 31 and the right lower cross member 32. Here, the right front axle 25 mentioned above supports the lower part of the right front vertical member 29, and the right rear axle 26 mentioned above supports the lower part of the right rear vertical member 30. Here, as shown in FIG. 2, the dimension d1 from the upper end portion of the right front vertical member 29 and the right rear vertical member 30 to the right front axle 25 and the right rear axle 26 is set to be smaller than the dimension W in the short direction Y of the work floor 6. As a result, the folded right handrail 10 can be stored in the space S. Here, space S refers to the space between the opposing right-side baseboard 17 and left-side baseboard 18, but also includes space S', which is an extension of space S parallel to the top (see Figures 3 to 6).

The right front vertical member 29 can be fixed in an upright position relative to the right front extension 21 by the right front plunger 34 provided on the right front extension 21. Similarly, the right rear vertical member 30 can be fixed in an upright position relative to the right rear extension 22 by the right rear plunger 35 provided on the right rear extension 22.

The left handrail 9 has the same shape as the right handrail 10, and is equipped with a pair of left front vertical members 36 and left rear vertical members 37, a left upper horizontal member 38 that connects the upper end of the left front vertical member 36 to the upper end of the left rear vertical member 37, a left lower horizontal member 39 that connects the middle section of the left front vertical member 36 to the middle section of the left rear vertical member 37, and a reinforcing member 40 installed between the left upper horizontal member 38 and the left lower horizontal member 39. The left front vertical member 36 and the left rear vertical member 37 are formed shorter than the right front vertical member 29 and the right rear vertical member 30. Here, the aforementioned left front axle portion 27 supports the lower part of the left front vertical member 36, and the aforementioned left rear axle portion 28 supports the lower part of the left rear vertical member 37. As shown in FIG. 2, the dimension d2 from the upper end of the left front vertical member 36 and the left rear vertical member 37 to the left front axle portion 27 and the left rear axle portion 28 is set to be smaller than the dimension W in the short direction Y of the work floor 6. This allows the folded left handrail 9 to be stored in the space S.

The left front vertical member 36 can be fixed in an upright position relative to the left front extension 23 by the left front plunger 41 provided on the left front extension 23. Similarly, the left rear vertical member 37 can be fixed in an upright position relative to the left rear extension 24 by the left rear plunger 42 provided on the left rear extension 24.

The rear handrail 8 is provided with a folding rear handrail body 43 and a rotating rear handrail body 44. The folding rear handrail body 43 is provided with a pair of rear right vertical members 45 and rear left vertical members 46, a rear upper horizontal member 47 that connects the upper end of the rear right vertical member 45 to the upper end of the rear left vertical member 46, and a rear lower horizontal member 48 that connects the middle section of the rear right vertical member 45 to the middle section of the rear left vertical member 46. A pair of rear right shaft portions 49 and rear left shaft portions 50 are provided on the upper part of the rear baseboard 16. The aforementioned rear right shaft portion 49 supports the lower part of the rear right vertical member 45 in the vertical direction toward the front, and the aforementioned rear left shaft portion 50 supports the lower part of the rear left vertical member 46 in the vertical direction toward the front. As shown in FIG. 2, the dimension d3 from the upper end of the rear right vertical member 45 and the rear left vertical member 46 to the rear right shaft portion 49 and the rear left shaft portion 50 is set to be smaller than the dimension D in the longitudinal direction X of the work floor 6. This allows the folded rear handrail body 43 to be stored in the space S.

The right end of the rear upper cross member 47 is fixed by the right upper rear plunger 52 to the right upper rear support member 51, which is a metal fitting with a U-shaped cross section that opens forward and is located to the left of the rear end of the right upper cross member 31. The right upper rear plunger 52 is installed on the underside of the right upper rear support member 51. Similarly, the right end of the rear lower cross member 47 is fixed by the right lower rear plunger 54 to the right lower rear support member 53, which is a metal fitting with a U-shaped cross section that opens forward and is located to the left of the rear end of the right lower cross member 32. The right lower rear plunger 54 is installed on the underside of the right lower rear support member 53.

The left end of the rear upper cross member 47 is fixed by the upper left rear plunger 56 to the upper left rear support member 55, which is a metal fitting with a U-shaped cross section that opens forward and is located to the right of the upper end of the rear vertical member 59 for rotation (described later). The upper left rear plunger 56 is installed on the underside of the upper left rear support member 55. Similarly, the left end of the rear lower cross member 47 is fixed by the lower left rear plunger 58 to the lower left rear support member 57, which is a metal fitting with a U-shaped cross section that opens forward and is located to the right of the middle section of the rear vertical member 59 for rotation. The lower left rear plunger 58 is installed on the underside of the lower left rear support member 57.

The pivoting rear handrail body 44 comprises a pivoting rear vertical member 59, a pivoting rear upper horizontal member 60, and a pivoting rear lower horizontal member 61. The pivoting rear upper horizontal member 60 is fixed at one end to the upper end of the pivoting rear vertical member 59, and is supported by a rear upper left shaft portion 62, which is provided at the upper end of the left rear vertical member 37, so that the pivoting rear upper horizontal member 60 can rotate freely from a parallel state in which the pivoting rear upper horizontal member 60 faces the upper left horizontal member 38 to a state in which the pivoting rear upper horizontal member 60 is perpendicular to the upper left horizontal member 38. The pivoting rear lower cross member 61 is fixed at one end to the middle of the pivoting rear vertical member 59, and is supported by a rear left lower shaft portion 63 provided at the middle of the left rear vertical member 37 so that the pivoting rear lower cross member 61 can rotate freely from a parallel state in which the pivoting rear lower cross member 61 faces the left lower cross member 39 to a state in which the pivoting rear lower cross member 61 is perpendicular to the left lower cross member 39. The lower portion of the pivoting rear vertical member 59 can be fixed to the rear baseboard 16 via a rear lock pin 64.

The front handrail 7 comprises a front vertical member 66, a front upper cross member 67, and a front lower cross member 68, and is of the same configuration as the rotating rear handrail body 44, and is installed in a symmetrical position. The front upper cross member 67 is fixed to the upper end of the front vertical member 66 at one end, and is supported by a front upper right shaft portion 69 provided at the upper end of the right front vertical member 29 at the other end so that it can rotate freely from a parallel state in which the front upper cross member 67 faces the upper right cross member 31 to a state in which the front upper cross member 67 is perpendicular to the upper right cross member 31. The front lower cross member 68 is fixed to the middle section of the front vertical member 66 at one end, and is supported by a front lower right shaft portion 70 provided at the middle section of the right front vertical member 29 at the other end so that it can rotate freely from a parallel state in which the front lower cross member 68 faces the right lower cross member 32 to a state in which the front lower cross member 68 is perpendicular to the right lower cross member 32. The lower part of the front vertical member 66 can be fixed to the front baseboard 15 via a front lock pin 71.

The door 73, which opens and closes the entrance 19 to the workbench 4, comprises a door body 74 and a door side baseboard 75. The door body 74 comprises a fixed side vertical member 76, an open side vertical member 77, a door side upper horizontal member 78 that connects the upper end of the fixed side vertical member 76 to the upper end of the open side vertical member 77, and a door side lower horizontal member 79 that connects the middle section of the fixed side vertical member 76 to the middle section of the open side vertical member 77. The fixed side vertical member 76 is connected to the left front vertical member 36 by a pair of door side upper shaft portion 80 and door side lower shaft portion 81 provided at the top and bottom.

The door body 74 is an inward-opening door, and the door-side upper horizontal member 78 and the door-side lower horizontal member 79 are pivotally supported by the left handrail so that they can rotate from a parallel state facing the upper left horizontal member 38 and the lower left horizontal member 39 to a state in which the upper door-side horizontal member 78 and the lower door-side horizontal member 79 are perpendicular to the upper left horizontal member 38 and the lower left horizontal member 39. The open-side vertical member 77 is rotatably equipped at its middle with a handle 82 that also serves as a locking means that can be engaged with the front vertical member 66. Meanwhile, the fixed-side vertical member 76 and the open-side vertical member 77 are hollow tubular members, and a pair of left-side sliding vertical members 83 and right-side sliding vertical members 84 can be inserted into each of them. The pair of left and right sliding vertical members 83 and 84 are provided so that they can move up and down and can be fixed in a raised position by the left door lock pin 85 and right door lock pin 86 provided at the bottom of the fixed side vertical member 76 and the open side vertical member 77, respectively. The sliding vertical members 83, 84 are fixed to the through holes 87, 88 formed at the left and right ends of the door side baseboard 75, respectively, to integrate the door main body 74 and the door side baseboard 75, and the sliding vertical members 83, 84 are raised by the lock pins 85, 86 to fix the bottom end of the door side baseboard 75 at a position sufficiently higher than the top end of the left side baseboard 18 (see Figure 9), and the door main body 74 is folded together with the door side baseboard 75 and the left handrail 9 (see Figure 10).

As shown in FIG. 2, a pair of mounting brackets A1 and A2 are attached to the rear upper cross member 47 of the rear handrail 8 as accessories for the workbench 4. The mounting brackets A1 and A2 have hook-shaped locking parts at the top that can be locked to the rear upper cross member 47. The mounting brackets A1 and A2 are attached with a shelf A3 on which tools and various other items can be placed. In addition, a control panel A4 for various controls is attached below the shelf A3 of one of the mounting brackets A2. Another mounting bracket A5 similar to the pair of mounting brackets A1 and A2 described above is attached to the rotating rear upper cross member 60 of the rear handrail 8, and a push button device A6 such as an emergency stop button is attached to this mounting bracket A5. In addition, each of the cylinders B1, B2, B3, and B4 for erecting supports (not shown) to maintain a space above the workbench 4 to protect the worker's head is also located in a position that does not interfere with the folding operation of each of the handrails 7, 8, 9, and 10 from the four corners of the workbench 4.

The folding method of the handrails provided on the work platform 4 of the lifting platform device 1 configured as above will be described. From the work platform 4 in the state shown in FIG. 2, the handrails are folded in order starting from the lowest position of the axle. First, the folding method of the rear handrail 8, which has the lowest axle position, will be described. The upper right rear plunger 52, the lower right rear plunger 54, the upper left rear plunger 56, and the lower left rear plunger 58 are released, and the folding rear handrail body 43 is folded from the rear right axle 49 and the rear left axle 50 toward the work floor 6 with the positioning and fixing between the right handrail 10 and the rotating rear handrail body 44 released (see FIG. 7). The folded and stored rear handrail 8 is stored in the space S formed between the girder side baseboards 17 and 18.

Next, we will explain how to fold the left handrail 9, which has the second lowest shaft position after the rear handrail 8. As a step before folding the left handrail 9, the rear lock pin 64 is released and the turning rear handrail body 44 is folded inward until the turning rear upper horizontal member 60 and the turning rear lower horizontal member 61 are parallel to the left upper horizontal member 38 and the left lower horizontal member 39, respectively (see Figure 8), and the door body 74 with the handle 82 opened is folded inward until the door side upper horizontal member 78 and the door side lower horizontal member 79 are parallel to the left upper horizontal member 38 and the left lower horizontal member 39, respectively (see Figure 10). Next, the left front plunger 41 and the left rear plunger 42 are released, and while holding the turning rear handrail body 44 and the door body 74 together, the left handrail 9 is folded from the left front shaft portion 27 and the left rear shaft portion 28 toward the work floor 6 (see Figure 12). As shown in Figures 3 to 5, in the left handrail 9 folded and stored, the left front vertical member 36 and the left rear vertical member 37 are held parallel to and spaced apart from the upper surface of the end side baseboards 15, 16 by the support members 15A, 16A erected on the upper surface of the end side baseboards 15, 16, and a gap is provided between the left front vertical member 36 and the end side baseboard 15, and also between the left rear vertical member 37 and the end side baseboard 16. These gaps prevent the worker's fingers from being pinched when folding, and prevent the left front vertical member 36 and the left rear vertical member 37 from colliding with the end side baseboards 15, 16.

Finally, we will explain how to fold the right handrail 10, which has the highest axle position. As a step before folding the right handrail 10, release the front lock pin 71 and fold the front handrail 7 inward until the front upper cross member 67 and front lower cross member 68 are parallel to and facing the right upper cross member 31 and right lower cross member 32, respectively (see Figure 12). Next, release the right front plunger 34 and right rear plunger 35, and while still holding the front handrail 7, fold the right handrail 10 from the right front axle 25 and right rear axle 26 toward the work floor 6 (see Figure 3).

As described above, when the rear handrail 8, left handrail 9, and right handrail 10 are folded in this order, the height of the work platform 4 is lowered to the height of the right front extension 21 and right rear extension 22. By loading the lifting platform device 1 in this state onto the bed of a truck, the height can be kept below 2.1 meters when loaded onto the vehicle, thereby complying with height restrictions in work areas such as roads and underground parking lots (see Figure 13). Also, the handrails 9, 10 are stored so that they fit between the girder side baseboards 17, 18. The handrails are assembled in the reverse order to the handrail folding method described above, and the work platform configuration described above is constructed, but a description of this will be omitted here.

In this embodiment, the work platform 4 of the lifting platform device 1 is provided with multiple handrails surrounding the work platform 6, and the multiple handrails can be rotated between a stored state in which they are folded onto the work platform 6 and a usage state in which they are erected almost perpendicular to the work platform 6. In the usage state, a first handrail 9 and a second handrail 10 are erected in the longitudinal direction X of the work platform 6, and a third handrail 8 is provided on at least one side of the lateral direction Y of the work platform 6. In the stored state, the first handrail 9 or the second handrail 10 is stored above the third handrail 8, making it possible to fold the multiple handrails without making them bulky.

In addition, in this embodiment, the first handrail 9 and the second handrail 10 are provided at their lower ends with girder side baseboards 17, 18, and the third handrail 8 is stored in the space S formed between the opposing girder side baseboards 17, 18, thereby providing a work platform 4 of the lifting platform device 1 in which each handrail 9, 10 can be stored so as to fit between the girder side baseboards 17, 18.

In addition, in this embodiment, the multiple handrails include a fourth handrail 7 in the short direction Y of the work floor 6 opposite the third handrail 8, and the fourth handrail 7 is pivotally attached to either the first handrail 9 or the second handrail 10, and in the stored state, can be folded up while overlapping either the first handrail 9 or the second handrail 10, thereby providing a work platform 4 of the lifting platform device 1 in which all multiple handrails can be folded up.

In addition, in this embodiment, the third handrail 8 and the fourth handrail 7 are provided with end side baseboards 15, 16 at their lower ends, and in the stored state, part or all of the end side baseboards 15, 16 are erected, and the first handrail 9 and the second handrail 10 are supported by the girder side baseboards 17, 18 in the stored state. Therefore, in the stored state of each handrail 7, 8, 9, 10, each baseboard 15, 16, 17, 18 is not folded and stands upright on the work floor 6, improving the connection strength between each handrail 7, 8, 9, 10 and the work floor 6, and each assembled handrail 7, 8, 9, 10 stands upright stably from the work floor 6.

As an effect of the embodiment, the work platform 4 of the lifting platform device 1 is equipped with a front handrail 7, a rear handrail 8, a left handrail 9, and a right handrail 10 as multiple handrails surrounding the periphery of the work platform 6, and at least the left handrail 9 and the right handrail 10 are equipped with a right front shaft 25, a right rear shaft 26, a left front shaft 27, and a left rear shaft 28 as joints that enable them to be folded onto the work platform 6, and the right front shaft 25, the right rear shaft 26, the left front shaft 27, and the left rear shaft 28 are at different heights, so that the multiple handrails can be folded onto the work platform 6 without being removed from the work platform 6, and it becomes easy to lower the height of the work platform 4. In addition, it becomes easy to overlap the multiple handrails when folded, making it easy to fold the multiple handrails.

The front handrail 7, rear handrail 8, left handrail 9, and right handrail 10 are provided above the front baseboard 15, rear baseboard 16, right baseboard 17, and left baseboard 18, which are multiple baseboards erected to surround the periphery of the work floor 6. This allows the front handrail 7, rear handrail 8, left handrail 9, and right handrail 10 to be folded up while the front baseboard 15, rear baseboard 16, right baseboard 17, and left baseboard 18 remain fixed to the work floor 6. This makes it possible to fold the front handrail 7, rear handrail 8, left handrail 9, and right handrail 10 without compromising the strength of the work platform 4.

The rear handrail 8 and right handrail 10 as part of the multiple handrails are integrally equipped with an upper right rear plunger 52 and a lower right rear plunger 54 as lock pin mechanisms that position and fix adjacent handrails to each other, preventing loss of parts and simplifying the task of positioning and fixing adjacent handrails to each other.

In addition, the right handrail 10 and the left handrail 9 can be folded so that they overlap each other, making it possible to fold multiple handrails without taking up too much space.

In addition, a door 73 is provided at the entrance 19 of the work platform 4, and the handrails include a front handrail 7 as a third handrail, and the door 73 can be folded down integrally with the left handrail 9 onto the work floor 6, and the front handrail 7 can be folded down integrally with the right handrail 10 onto the work floor 6, making it possible to fold down the handrails and door 73 without them taking up too much space.

The multiple handrails include a rear handrail 8, which includes a folding rear handrail body 43 that includes a rear right axle portion 49 and a rear left axle portion 50 as joints that allow it to be folded onto the work floor 6, and a rotating rear handrail body 44 that can be folded onto the work floor 6 integrally with the left handrail 9. This makes it possible to fold the multiple handrails without them being bulky.

The third handrail 8 and the fourth handrail 7 are detachably attached to the gable baseboards 15, 16, and the third handrail 8 and the fourth handrail 7 are foldable to the first handrail 9 and the second handrail 10, respectively. This simplifies the storage process by folding and storing the third handrail 8 and the fourth handrail 7 together with the first handrail 9 and the second handrail 10.

The present invention is not limited to the above embodiment, and various modifications are possible within the scope of the present invention. Each plunger and each lock pin in this embodiment can be modified as appropriate. For example, the shape of the lock pin may be an L-shape that makes it easier to check the fastening state, other than a straight shape. The front handrail 7 and the door 73 may be detachable from the work floor 6. The rear handrail 8 may be integrally provided with a folding rear handrail body 43 and a rotating rear handrail body 44, and may be foldable onto the work floor 6 via the rear right shaft portion 49 and the rear left shaft portion 50. Also, for the door side baseboard, the left side sliding vertical member 83 and the right side sliding vertical member 84 are inserted vertically slidably through the through holes 87, 88 formed at the left and right ends of the door side baseboard 75, respectively, to integrate the door body and the door side baseboard, and when each sliding vertical member is fixed in the raised position with each lock pin, each sliding vertical member comes out of the through hole completely, the door body and the door side baseboard are separated, and the door body rotates relative to the left front vertical member via the door side upper shaft portion and the door side lower shaft portion, and the door side baseboard rotates relative to the left front end pillar via the door side baseboard shaft portion.

1 Lifting platform device 4 Work platform 6 Work floor 7 Front handrail (fourth handrail)
8 Rear handrail (third handrail)
9. Left handrail (first handrail)
10 Right handrail (second handrail)
15 Front skirting board (gable side skirting board)
16 Rear baseboard (gable side baseboard)
17 Right side baseboard (beam side baseboard)
18 Left side baseboard (beam side baseboard)
73 Door
74 Door body
75 Door side skirting board
S Space X Longitudinal direction Y Shortitudinal direction

Claims (4)

A work platform of a lifting platform device having a plurality of handrails surrounding a periphery of a work platform,
A door is provided for opening and closing the entrance to the workbench,
The handrails are rotatable between a stored state in which they are folded onto the work floor and a usage state in which they are erected substantially perpendicular to the work floor,
The plurality of handrails include a first handrail and a second handrail erected in the longitudinal direction of the work floor in the use state, and a third handrail erected in at least one of the lateral directions of the work floor,
In the stored state, the first handrail and the second handrail are stored above the third handrail ,
A girder side baseboard is provided at the lower ends of the first handrail and the second handrail,
The door includes a door body and a door side baseboard that is vertically movable relative to the door body.
A workbench for a lifting platform device, characterized in that the door side baseboard is fixed at a position higher than the girder side baseboard, and the door body is configured so that the door side baseboard and the second handrail can be folded together as one unit . 2. The work platform of the lift platform device according to claim 1, wherein the third handrail is stored in a space formed between the opposing girder side baseboards. The plurality of handrails include a fourth handrail in a short side direction of the work floor opposite the third handrail,
The fourth handrail is pivotally attached to either the first handrail or the second handrail,
3. The work platform of the lifting platform device according to claim 1 or 2, characterized in that, in the stored state, the work platform can be folded up in a state where it overlaps with either the first handrail or the second handrail. The third handrail and the fourth handrail are provided with a gable side baseboard at their lower ends, and a part or all of the gable side baseboard is erected in the stored state,
4. The work platform of the lifting platform device according to claim 3, wherein the first handrail and the second handrail are supported by the girder side baseboard in the stored state.

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