JPH0632580U - Work platform - Google Patents

Abstract

(57) [Abstract] [Purpose] By aligning the scale line S provided on the workbench with the side edge 20b of the mounting surface, the pillar-side engagement member 30 and the workbench-side engagement member 40 can be easily positioned. To [Structure] The pillar side engagement member 30 is attached to the attachment surface 20a such that its center C30 is separated from the side edge 20b of the attachment surface 20a by a predetermined dimension L. The positioning scale line S is provided on the flange surface 12f of the underframe 12 from the center C40 of the work table side engaging member 40 toward the side edge 20b. By aligning the scale line S, which is separated from the center C40 by the predetermined distance L, with the side edge 20b of the mounting surface 20a, the pillar-side engaging member 30 and the workbench-side engaging member 40 can be easily positioned. it can.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an aerial work platform attached to a column for performing aerial work at, for example, a construction site of a building. More specifically, the work platform is provided with a scale line for positioning the work platform with respect to the column. Therefore, the present invention relates to an aerial work platform that has been improved so that it can be easily attached to a pillar.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 4, in order to attach the workbench 10 to the pillar 20, the workbench side engaging member 40 provided on the workbench 10 is engaged with the pillar side engaging member 30 provided on the pillar. This is done by combining them. As shown in detail in FIG. 5, the pillar-side engagement member 30 has an upward projection 35, while the work table engagement member 40 has a downward opening 41. To engage the two, the workbench 10 may be lifted and the downward opening tool 41 may be inserted into the upward protrusion 35 from above and fitted therein.

[0003]

[Problems to be solved by the device]

 However, according to the above-mentioned conventional technique, it is necessary to position the both in order to fit the downward opening tool 41 to the upward protrusion 35. However, both of them need to be positioned on the back surface of the underframe 12 of the workbench 10 or the step board 13. Since it is hidden in, the operator who is lifting the workbench 10 by hand cannot directly see the upward projection 35 and the downward opening tool 41.

Therefore, conventionally, a worker moves the workbench 10 to the left or right while lifting the workbench 10 and finds the position of the upward protrusion 35 by looking for it, and fits the downward opening tool 41 to the upward protrusion 35 by blind work. As a result, installation work was not easy and time-consuming. During this period, since the workbench 10 is not light, the physical burden on the worker who holds the workbench by hand is very heavy.

Furthermore, even if the workbench is hoisted by a crane or the like in temporary work in a high place where the scaffolding is poor, a worker is required to visually check the upward projection 35 and the downward opening tool 41 in order to position the workbench. It was supposed that the danger of working at heights would be further increased by looking into the back of the workbench and taking an unstable posture, placing the body under the workbench, and taking too much time.

The physical burden on the worker and the risk of work are due to the drawback of the conventional technique that it is not easy to position the upward projection 35 and the downward opening tool 41 to fit each other. It is happening.

Therefore, the present invention improves the conventional technology so that the positioning of the downward opening tool 41 with respect to the upward projection 35 can be easily carried out without directly visually observing both of them and without performing a blind operation relying on intuition. By doing so, it is possible to easily and quickly fit the both, thereby reducing the physical burden on the worker and the risk of the work in the work of mounting the work platform at a high place.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, in the aerial work platform according to claim 1 of the present invention, the pillar-side engaging member is located at a position separated by a predetermined dimension from one side edge in the width direction of the mounting surface. The work table side engaging member attachment side surface of the work table and the portion visible on the work table mounting work in the width direction of the work table mounting surface. The positioning scale line is configured to be provided toward the one side edge of the mounting surface with reference to the workbench side engagement member.

Further, in the aerial work platform according to claim 2 of the present invention, the pillar-side engaging member is attached to the mounting surface such that the center of the engaging member is aligned with the center of the mounting surface of the pillar in the width direction. At the same time, the positioning graduation lines are provided line-symmetrically with respect to the center of the workbench side engaging member with a distance equal to the dimension of the mounting surface in the width direction.

Further, in the aerial work platform according to a third aspect of the present invention, the positioning scale line is additionally provided with a number or a character corresponding to the widthwise dimension of the mounting surface.

[0011]

[Action]

 According to the aerial work platform according to the first aspect of the present invention, the pillar-side engaging member is located at a position separated from the one side edge in the width direction of the mounting surface by a predetermined dimension. Therefore, if the work table is positioned so that the positioning scale line located at a position equal to the predetermined size from the work table side engaging member matches the side edge of the mounting surface, the pillar side engaging member Since the center of the worktable side engaging member and the center of the workbench side engaging member coincide with each other, the upward projection and the downward opening tool can be easily positioned.

[0012] Similarly, according to the aerial work platform according to the second aspect of the present invention, the left and right scale lines provided on the work table side engaging member are aligned with the left and right side edges of the mounting surface. If the workbench is positioned at the center, the center of the pillar-side engagement member and the center of the workbench-side engagement member coincide with each other, so that the upward protrusion and the downward opening tool can be easily positioned.

Further, according to the workbench of claim 3 of the present invention, since the positioning scale lines are additionally provided with numbers or characters corresponding to the widthwise dimension of the mounting surface of the column, the mounting surface is particularly marked. It is possible to easily identify which scale line should be used for positioning when a plurality of scale lines are provided on the workbench according to the widthwise dimension. This makes it possible to position the upward protrusion and the downward opening tool more easily.

[0014]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the parts common to the conventional ones will be denoted by the same reference numerals to simplify the description.

Embodiment 1 Similar to the conventional example shown in FIGS. 4 and 5, an aerial work platform (hereinafter abbreviated as a work platform) 10 of this embodiment has a scaffold main body 11 which serves as a scaffold for work. The scaffolding main body 11 has an underframe 12 having four sides in a rectangular shape, two treads 13 arranged along the long side direction of the underframe 12 to close the inside of the underframe 12, and A plurality of support members 14 mounted between the two long side members 12a and 12b of the underframe 12 and supporting the footboard 13 from below are assembled by welding them to each other. Further, below the long side member 12a on the column 20 side of the underframe 12, an abutting member 15 that abuts the column 20 and transmits the load applied to the workbench 10 to the column 20 is provided on the long side member 12a. It is installed in parallel with. The contact member 15 has a contact plate 16 which contacts the mounting surface 20a on the surface thereof, and is connected to the long side member 12a by a vertical member 17 suspended from the lower surface of the long side member 12a. The long side member 12b is connected by an oblique support member 18 arranged between the column 20 of the frame 12 and the long side member 12b on the opposite side. Support legs 19 are provided below the two short side members 12c and 12d of the underframe 12 and serve to support the workbench 10 when the workbench 10 is placed on the ground or the like. Further, although an auxiliary handrail is usually provided on the work platform 10 at high places, the description thereof will be omitted because it is removed at the time of temporary work on the pillar. Further, the workbench side engagement member 40 is attached to the long side member 12a on the column 20 side of the underframe 12, which will be described in detail later.

As shown in FIGS. 1 and 5, the pillar-side engaging member 30 welded to the mounting surface 20 a of the pillar 20 includes a rectangular metal plate at both ends of a joint plate 31 made of an elongated metal strip. The receiving member 32 made of is welded, and the thick pipe 33 is welded to the receiving member 32. Welding nuts 34 for fixing the work table side engaging member 40 are welded to the upper ends of the thick pipes 33, and the thick pipes 33, the welding nuts 34, and the receiving member 32 form a substantially L-shaped pipe. A letter-shaped upward protrusion 35 is configured. The two left and right upward projections 35 are parallel to each other and also to the mounting surface 20a of the column 20, and the distance L30 between them is a preset value.

As shown in FIG. 1, the workbench side engaging member 40 is composed of two downward facing openings 41 attached to the long side members 12 a of the scaffolding main body 11, and these two downward facing openings 41 are provided. The tools 41 are attached in line symmetry with respect to the center C11 in the lengthwise direction of the long side member 12a and at intervals equal to the distance L30 between the upward protrusions 35 and in parallel with each other. Therefore, the center C40 of the workbench side engagement member 40 coincides with the center C11 of the scaffold body 11. As shown in FIGS. 1 and 5, the downward opening tool 41 includes a downward opening pipe 43, which is a thick pipe vertically welded to an upper metal plate 42 that abuts on the upper surface of the long side member 12a. After being inserted from above into a vertical hole penetrating the side member 12a, the lower metal plate 44 that abuts the lower surface of the long side member 12a supports the tip of the downward opening pipe 43, and then lengthens it with a bolt 45 and a nut 46. The side member 12a is fixed by being screwed integrally so as to sandwich the side member 12a. Here, the downward opening pipe 43 is provided with a taper 43a at the inner diameter at the lower end thereof so as to be easily fitted into the upward projection 35, and is provided with a notch 43b for avoiding interference with the receiving member 32. Has been.

A through hole 42 a is formed in the upper metal plate 42 of the downward opening tool 41 so as to be coaxial with the downward opening pipe 43, and the through hole 42 a is screwed into the welding nut 34. The fixing bolt 50 to be attached is inserted. A nut 51 is screwed to the fixing bolt 50, and the fixing bolt 50 is screwed to the welding nut and then tightened so as to come into contact with the upper metal plate 42. Further, the fixing bolt 50 is connected to an appropriate position of the workbench 10 by a chain or the like to prevent it from falling.

Further, in the first embodiment, as shown in FIGS. 1 and 5, first, the center C30 of the pillar-side engaging member 30 has a predetermined size from one side edge 20b in the width direction of the mounting surface 20a of the pillar 20. It is attached to the attachment surface 20a at a position separated by L. Furthermore, a positioning scale line S with respect to the width direction of the mounting surface 20a of the workbench 10 is provided on the inner surface 12f of the flange 12e provided upright on the upper surface of the long side member 12a, and the worktable side engaging member 40 It is provided from the center C40 toward the one side edge 20b of the mounting surface 20a. Thereby, the worker can easily visually recognize the positioning scale line S when the work table 10 is attached to the pillar 20. The scale line S may be stamped on the flange surface 12f by pressing, may be drawn with a paint, or another component having scale lines may be attached to the flange surface 12f. .

The operation of attaching the workbench 10 of the first embodiment configured as described above to the pillar 20 will be described below. To attach the workbench 10 to the pillar 20, first, an operator lifts the workbench 10 and then brings the workbench 10 into contact with the mounting surface 20a of the pillar 20. Next, a scale line S located at a position separated from the center C40 of the workbench side engaging member 40 by a size equal to the predetermined size L is selected, and this scale line S is one side in the width direction of the mounting surface 20a. The workbench 10 is positioned so as to coincide with the edge 20b. By doing so, the center C30 of the pillar-side engaging member 30 is located at a position separated from the side edge 20b by the predetermined dimension L, while the center C40 of the workbench-side engaging member 40 is also located above the scale line S. Since the positions are apart from each other by the predetermined dimension L, the center C30 of the column-side engaging member 30 and the center C40 of the workbench-side engaging member 40 coincide with each other. As a result, it is possible to position the upward protrusions 35 and the downward opening tool 41 that are arranged line-symmetrically at their centers at a predetermined distance L30. If the worker moves the workbench 10 toward the pillar side engaging member 30 in this state, the downward opening tool 41 can be smoothly fitted to the upward protrusion 35 as shown in FIG. Of.

Further, as described above, in the first embodiment, the pillar-side engaging member 30 is provided at a position where the center C30 thereof is separated from the one side edge 20b of the mounting surface 20a in the width direction by the predetermined dimension L. This is suitable for the case where the mounting surface 20a of the column 20 is wide and the workbench 10 does not necessarily have to be mounted at the center of the mounting surface 20a.

Embodiment 2 In Embodiment 2 corresponding to claim 2 of the present invention, as shown in FIG. 2, the center C30 of the pillar side engaging member 30 is aligned with the center C20 of the mounting surface 20a. Is attached to the mounting surface 20a at the same time, and the positioning graduation line S is line-symmetrical with respect to the center C40 of the workbench side engaging member 40 at an interval equal to the dimension L20 in the width direction of the mounting surface. It was provided. Therefore, as shown in FIG. 2, if the workbench 10 is positioned so that the left and right scale lines S coincide with the left and right side edges 20b and 20c of the mounting surface 20a, the center C30 of the pillar side engaging member 30 and Since the center C40 of the workbench side engaging member 40 coincides with each other, the upward protrusion 35 and the downward opening tool 41 can be positioned in the same manner as in the first embodiment, so that both can be smoothly moved. It can be fitted.

In the second embodiment, the width of the mounting surface 20a of the column 20 is narrow and it is suitable for mounting the workbench 10 in alignment with the center of the mounting surface. Since the positioning is performed with respect to both side edges of the mounting surface while simultaneously observing, the positioning work becomes easier.

Third Embodiment In a third embodiment corresponding to claim 3 of the present invention, as shown in FIG. 3, a value of a dimension L20 in the width direction of the mounting surface 20a is set on the positioning scale line S. The number or letter corresponding to was added. This makes it possible to easily identify which scale line S should be used for positioning, especially when a plurality of scale lines are provided.

In addition, as for the high-altitude workbench as in the present invention, many workbenches of several sizes are prepared according to the widthwise dimension of the column to be mounted. Since the numbers or letters corresponding to the widthwise dimension of the mounting surface of the pillar are added to the line, there is also a side effect that it is easy to select a workbench of an appropriate size for the mounting pillar. is there.

[0026]

[Effect of device]

 As described above, according to the present invention, by aligning the scale line provided on the workbench with the side edge of the mounting surface of the pillar, the upward protrusion of the pillar-side engaging member and the workbench-side engaging member. The downward opening tool can be easily positioned. This allows workers to move the work table to the left and right as they used to, and to visually check both of them for the blind work to search for them by relying on the position of the upward protrusion and to position the upward protrusion and the downward opening. It became possible to eliminate the need to take an unstable posture, and it was possible to significantly reduce the physical burden on the workers and the risk of work in the work of mounting the aerial work platform. In addition, by describing the nominal dimensions of the columns to be mounted on the scale line provided on the workbench, it is suitable for the size of the mounting column from among the many workbench prepared according to the widthwise dimension of the column. The size of the workbench can now be easily selected.

[Brief description of drawings]

FIG. 1 is a partially enlarged view of a first embodiment of the present invention viewed from the front.

FIG. 2 is a partially enlarged view of a second embodiment of the present invention viewed from the front.

FIG. 3 is a partial enlarged view of a third embodiment of the present invention seen from the front.

FIG. 4 is a perspective view showing a conventional example.

FIG. 5 is a side view showing a conventional example.

[Explanation of symbols]

 10 work platform 20 mounting column 30 column side engaging member 40 work table side engaging member 50 fixing bolt S scale line

Claims (3)

[Scope of utility model registration request] 1. In an aerial work platform which is attached to a mounting surface of a column by engaging the column side engaging member with the work table side engaging member, the column side engaging member is arranged in a width direction of the mounting surface. While being attached to the attachment surface so as to be at a position separated from the one side edge by a predetermined dimension, on a portion of the surface of the workbench side engagement member attachment side of the workbench that is visible during the workbench attachment work, Positioning scale lines in the width direction of the mounting surface of the work table are provided toward the one side edge of the mounting surface with reference to the work table side engaging member. Stand. 2. The pillar-side engaging member is attached to the mounting surface so that the center thereof coincides with the center of the mounting surface of the pillar in the width direction, and the positioning scale line is attached to the workbench-side engaging member. The aerial workbench according to claim 1, wherein the workbench is provided symmetrically with respect to the center of the member with an interval equal to the dimension of the mounting surface in the width direction. 3. The work platform for high places according to claim 1, wherein a number or a character corresponding to a dimension of the mounting surface in the width direction is added to the positioning scale line.