JP2022155132A - Work platform - Google Patents

Abstract

To provide a work platform capable of being folded smoothly and reducing a dimension of a long side direction.SOLUTION: A work platform comprises: a pair of first support poles supporting two corner parts of one side in a long side direction of a work floor; a pair of second support poles supporting two corner parts of the other side in the long side direction of the work floor; a first extension part coupled to the pair of first support poles; a second extension part coupled to the pair of second support poles; and a pair of connection materials extending in a long side direction so as to couple the pair of first support poles and the pair of second support poles. The first extension part has a pair of first cross members intersecting in an X shape viewed from the above and the second extension part has a pair of second cross members intersecting in an X shape viewed from the above. The pair of connection materials are provided bendably upward respectively.SELECTED DRAWING: Figure 11

Description

The present invention relates to a work platform that can be moved and folded.

2. Description of the Related Art Conventionally, mobile work scaffolds have been used for interior work of buildings and the like. In particular, when interior work is performed, work scaffolds with a structure that can be folded so that they can pass through the door of a building or be placed on an elevator are used (for example, see Patent Documents 1 and 2). ).

The folding work scaffold disclosed in Patent Document 1 includes a pair of legs supported by casters at both ends of the scaffold in the long side direction. A pantograph-like brace is provided to connect a pair of legs. The braces are provided so as to be able to expand and contract in the longitudinal direction of the work scaffold within the vertical plane.

With the configuration as described above, the folding work scaffold of Patent Literature 1 can be folded so that one leg is brought closer to the other leg while contracting the braces. This makes it possible to reduce the dimension of the working scaffold in the long side direction.

Further, the work scaffold disclosed in Patent Document 2 includes four main legs, a pair of diagonal bars attached to the top of the four main legs (hereinafter referred to as upper diagonal bars), Another pair of diagonal beams (hereinafter referred to as lower diagonal beams) attached to the lower part of the four main landing gears, and shafts supporting the pair of upper diagonal beams and the pair of lower diagonal beams Hereinafter, it is described as a support shaft.). Each main leg is provided with a telescoping leg with casters. A pair of upper diagonal bars cross each other so as to form an X shape when viewed from above, and their central parts are pivotable to the upper ends of the support shafts so that they can be closed and opened in a horizontal plane. Supported. The pair of lower diagonal crosspieces are arranged so that they intersect each other to form an X shape when viewed from above. Supported.

With the configuration as described above, the work scaffold of Patent Document 2 has a pair of main legs on one side in the width direction (short side direction of the scaffold) while closing the pair of upper diagonal bars and the pair of lower diagonal bars. It can be folded so as to approach the pair of main legs on the side. Thereby, the dimension of the working scaffold in the width direction can be reduced.

JP 2011-52474 A Japanese Utility Model Laid-Open No. 6-24133

As described above, both the work platforms disclosed in US Pat. However, as a result of various investigations by the present inventors, it has been found that the following problems occur in the work scaffolding having the structure described above.

FIG. 1 is a diagram for explaining problems of a work scaffold having braces that can be stretched in a horizontal plane. The work platform 100 shown in FIG. 1 includes a pair of legs 102 spaced apart in the longitudinal direction of the work platform 100 and a brace 104 connecting the pair of legs 102 . The legs 102 are movably supported by casters 106 . In order to simplify the explanation, FIG. 1 shows the working floor provided for the working scaffold 100 (the portion supported by the upper ends of the pair of legs 102 and serving as a scaffolding for the worker), handrails, and the like. are omitted.

The braces 104 are configured to be able to expand and contract in the vertical plane in the same manner as the braces of the work scaffold disclosed in Patent Document 1. As shown in FIG. 1, when folding the work platform 100, one leg 102 is moved toward the other leg 102. As shown in FIG. At this time, if the operator presses a portion of the leg 102 above the connecting portion with the brace 104, force cannot be applied equally to the members above and below the brace 104. - 特許庁In this case, as shown in FIG. 2, the leg 102 is pushed in an inclined state, and a bending force is applied to some of the structural members of the brace 104 . As a result, the braces 104 may be damaged. In this way, if the work scaffold has braces that can be expanded and contracted in the vertical plane, it may not be possible to fold the work scaffold smoothly.

On the other hand, in the work scaffold disclosed in Patent Document 2, the pair of diagonal beams are provided so as to rotate in the horizontal plane, so that the bending force shown in FIG. 2 is prevented from being generated. can be done. Therefore, it is considered that the work scaffold can be folded smoothly. However, in the configuration disclosed in Patent Document 2, the size of the working scaffold in the long side direction cannot be reduced because the size of the diagonal bars does not change.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a working scaffold that can be smoothly folded and whose lengthwise dimension can be reduced.

The gist of the present invention is the following working scaffold.

(1) a rectangular working floor;
The work floor is arranged apart from each other in the direction of the short side of the work floor and supported on one side of the center of the work floor in the direction of the long side of the work floor, and supported by casters that are respectively rotatable. a pair of first struts;
A pair of second casters which are arranged apart from each other in the short side direction, support the work floor on the other side of the center of the work floor in the long side direction, and are supported by rotatably provided casters. a stanchion;
a first telescopic part provided on one side of the center of the working floor in the longitudinal direction and connected to the pair of first pillars;
a second telescoping part provided on the other side of the center of the work floor in the longitudinal direction and connected to the first telescoping part and the pair of second struts;
a pair of connecting members extending in the long side direction so as to connect the pair of first pillars and the pair of second pillars;
The first expansion/contraction part has a pair of first horizontal members that intersect in an X shape when viewed from above and are connected to each other so as to be able to rotate in the horizontal direction,
The second telescoping part has a pair of second horizontal members that intersect in an X shape when viewed from above and are connected to each other so as to be able to rotate in the horizontal direction,
One of the pair of connecting members connects the first support and the second support on one side in the short side direction, and the other of the pair of connecting members is the other in the short side direction. connecting the first support and the second support on the side;
The work scaffolding, wherein each of the pair of connecting members is provided so as to be bendable upward.

(2) each of the pair of connecting members,
As the pair of first pillars and the pair of second pillars approach each other in the long side direction, they bend so that the central portion in the long side direction moves upward, and the length in the long side direction becomes shorter. ,
The above (1), wherein the pair of first struts and the pair of second struts extend so that the center portion moves downward as the pair of first struts and the pair of second struts separate in the long side direction, and the length in the long side direction increases. Working scaffolds as described in .

(3) The work scaffolding according to (2) above, wherein in the short side direction, the pair of connecting members is positioned outside a connecting portion between the first elastic portion and the second elastic portion.

(4) In the long side direction, the distance between the center of rotation of the pair of first horizontal members and the center of the work floor is the distance between the center of rotation of the pair of first horizontal members and each of the first columns. smaller than the distance from the axis,
In the long side direction, the distance between the center of rotation of the pair of second horizontal members and the center of the work floor is the distance between the center of rotation of the pair of second horizontal members and the axis of each of the second columns. The working scaffold according to any one of the above (1) to (3), which is smaller than the distance of

(5) Any one of (1) to (4) above, wherein the first support and the second support are connected to the connecting material so as to be horizontally rotatable with respect to the connecting material. working scaffold.

(6) The pair of connecting members are respectively a first rod-like member connected to the first post so as to be vertically rotatable with respect to the first post, and a first rod-like member that is vertically rotatable with respect to the second post. a second rod-shaped member movably connected to the second strut;
(1) to (5) above, wherein the first rod-shaped member and the second rod-shaped member are vertically rotatable with respect to each other at a central portion of the connecting member in the long side direction; A working scaffold according to any one of

(7) Each of the pair of connecting members is engaged with the first rod-shaped member and the second rod-shaped member at the central portion of the connecting members, thereby preventing the connecting members from bending downward. The work scaffold according to (6) above, comprising a locking member that engages.

(8) In each of the pair of connecting members, the first rod-shaped member and the second rod-shaped member are rotated with respect to each other so that the locking member moves downward from the state in which the connecting members are bent upward. The work scaffold according to (7) above, comprising a restricting member that restricts movement.

ADVANTAGE OF THE INVENTION According to this invention, the working scaffolding which can be smoothly folded and can make the dimension of a long side direction small is obtained.

FIG. 1 is a diagram for explaining problems of a work scaffold having braces that can be stretched in a horizontal plane. FIG. 2 is a diagram for explaining the problem of a working scaffold having braces that can be stretched in a horizontal plane. FIG. 3 is a front view showing the working scaffold according to the embodiment of the present invention. 4 is a plan view of the work platform of FIG. 3; FIG. 5 is a left side view of the work platform of FIG. 3; FIG. FIG. 6 is a diagram showing a pair of support units. FIG. 7 is a diagram showing a support. FIG. 8 is a diagram showing a support. FIG. 9 is a diagram showing a support. FIG. 10 is a diagram showing a support. FIG. 11 is a diagram showing the work scaffold with the work floor removed. FIG. 12 is a diagram of the connecting portion and its surroundings viewed from one side in the long-side direction of the work floor. 13 is a diagram showing the AA portion of FIG. 12. FIG. 14A and 14B are diagrams for explaining a connecting portion and a support mechanism; FIG. FIG. 15 is a diagram showing a connecting material. FIG. 16 is a diagram showing a connecting material. FIG. 17 is a diagram showing the first rod-shaped member. FIG. 18 is a diagram showing a second rod-shaped member. FIG. 19 is a diagram showing a locking member and a restricting member. FIG. 20 is a diagram for explaining the relationship between the strut and the connecting material. FIG. 21 is a diagram for explaining the relationship between the strut and the connecting material. FIG. 22 is a diagram for explaining the operation of the working scaffold. FIG. 23 is a diagram for explaining the operation of the working scaffold. FIG. 24 is a diagram showing the central portion of the connecting material in the long side direction. FIG. 25 is a diagram for explaining the operation of the connection unit; FIG. 26 is a diagram showing another example of the connecting material. FIG. 27 is a diagram showing a first rod-shaped member and a second rod-shaped member. FIG. 28 is a diagram showing the central portion of the connecting material in the long side direction. FIG. 29 is a diagram showing another example of the first connecting member. FIG. 30 is a diagram showing a first connecting member and a first rod-shaped member; FIG. 31 is a diagram showing another example of the connecting portion. FIG. 32 is a diagram showing another example of a method of connecting a pair of support units. FIG. 33 is a diagram showing another configuration example of the first regulation mechanism. FIG. 34 is a diagram showing another configuration example of the working scaffold. FIG. 35 is a diagram showing another configuration example of the support. FIG. 36 is a diagram showing another configuration example of the support. FIG. 37 is a diagram showing another configuration example of the working scaffold.

(Composition of work scaffolding)
Hereinafter, working scaffolds according to embodiments of the present invention will be described with reference to the drawings. 3 is a front view showing the working scaffolding according to the embodiment of the present invention, FIG. 4 is a plan view of the working scaffolding of FIG. 3, and FIG. 5 is a left side view of the working scaffolding of FIG. be. 3 and 4, some of the constituent elements of the work scaffold 10 are omitted in order to avoid complication of the drawings.

As shown in FIG. 3, the work platform 10 according to this embodiment includes a work floor 12, a pair of support units 14a and 14b, a connecting portion 16, and a support mechanism 18. As shown in FIG. The work floor 12 is supported by a pair of support units 14a and 14b via a connecting portion 16 and a support mechanism 18, details of which will be described later. Although illustration is omitted to avoid complicating the drawing, a handrail frame is attached to the work floor 12 so as to cover the periphery of the work floor 12 when the worker performs work. In addition, when a worker ascends and descends the work floor 12, a lifting ramp (ladder) is used. As for the construction of the handrail frame and the elevating ramp, various known constructions of the handrail frame and the elevating ramp can be used, so the description thereof will be omitted.

As shown in FIG. 4, the work floor 12 has a rectangular shape when viewed from above. In this embodiment, the working floor 12 has a rectangular shape with four corners 12a to 12d. As shown in FIGS. 3 and 4, in this embodiment, the work floor 12 has a first floor 20 and a second floor 22 arranged side by side in the long side direction of the work floor 12 . there is In this embodiment, a first floor portion 20 is provided on one side of the work floor 12 in the long side direction, and a second floor portion 22 is provided on the other side of the work floor 12 in the long side direction. In the following description, simply referring to the long side direction means the long side direction of the work floor 12 . Further, when simply referring to the short side direction, it means the short side direction of the work floor 12 . The shape of the work floor is not limited to the shape shown in FIG. 4, and the work floor may be configured to form a substantially rectangular shape as a whole. If the working floor is not perfectly rectangular, the long side direction means the longitudinal direction of the working floor, and the short side direction means the short side direction of the working floor. In this embodiment, the corners 12a to 12d are bent at a right angle when viewed from above, but the corners may be chamfered when viewed from above, for example.

The first floor portion 20 has a rectangular frame 20a when viewed from above, and a pair of connecting members 20b fixed to the frame 20a and extending in the long side direction. The second floor portion 22 is configured in the same manner as the first floor portion 20, and has a frame 22a and a pair of connecting members 22b. Although not shown in order to avoid complicating the drawing, a mesh-like floor material (a portion that serves as a foothold for the worker) is fixed on the frame 20a. Similarly, a mesh floor material is fixed on the frame 22a. The flooring material is not limited to a net-like one, and may be a plate-like one.

FIG. 6 shows the support units 14a and 14b, where (a) is a plan view of the support units 14a and 14b and (b) is a front view of the support units 14a and 14b. In addition, in FIG. 6A, in order to avoid complication of the drawing, illustration of a part of the configuration (casters, etc.) of the support units 14a and 14b is omitted. It should be noted that the illustration of a part of the construction of the working scaffold 10 is omitted as appropriate in each figure described later. 6 shows the support units 14a and 14b separated from each other, in the work platform 10, the support units 14a and 14b are connected to each other. The connection of the support units 14a and 14b will be described later.

As shown in FIG. 6, the support unit 14a has a pair of supports 40 and 42 which are provided so as to intersect each other when viewed from above, and the support unit 14b is provided so as to intersect each other when viewed from above. It has a pair of supports 44,46.

7 is a view showing support 40, FIG. 8 is a view showing support 42, FIG. 9 is a view showing support 44, and FIG. 10 is a view showing support 46. FIG. be. 7 and 8, (a) is a plan view of the support, (b) is a left side view of the support, and (c) is a front view of the support. 9 and 10, (a) is a plan view of the support, (b) is a right side view of the support, and (c) is a front view of the support.

As shown in FIG. 7, the support 40 has a vertically extending column 40a, a plurality of horizontally extending horizontal members 40b, 40c and 40d, and a plurality of vertically extending vertical members 40e and 40f. . The column 40a is supported by casters 40g with wheels. The caster 40g is attached to the support|pillar 40a so that it can turn around the rotating shaft extended in an up-down direction. As shown in FIG. 4, when the work platform 10 is used, the corners 12a of the work floor 12 are supported by the supports 40a.

As shown in FIG. 7, in the present embodiment, the post 40a has a columnar or tubular first member 41a, a tubular second member 41b, and a columnar or tubular third member 41z. The upper portion of the first member 41a is inserted into the second member 41b from below the second member 41b. The second member 41b is configured to be vertically movable with respect to the first member 41a and to be fixed to the first member 41a at a predetermined height. In this embodiment, the vertical length of the support 40 can be adjusted by adjusting the fixed height of the second member 41b with respect to the first member 41a. The lower portion of the third member 41z is inserted into the second member 41b from above the second member 41b. The third member 41z is configured to be vertically movable with respect to the second member 41b and to be fixed to the second member 41b at a predetermined height. The third member 41z will be described later. The caster 40g is attached to the lower end of the first member 41a. The cross-sectional shape (cross-sectional shape orthogonal to the axial direction) of the first member 41a, the second member 41b, and the third member 41z may be circular (cylindrical, cylindrical), or polygonal (prism). shape, rectangular tube shape). The same applies to first members 43a, 45a, 47a, second members 43b, 45b, 47b, and third members 43z, 45z, 47z, which will be described later.

One end of the horizontal member 40b is connected to the strut 40a. In this embodiment, one end of the horizontal member 40b is fixed to the second member 41b of the support 40a. In this embodiment, the horizontal member 40b has a columnar or tubular main body portion 41c extending horizontally from the post 40a (second member 41b), and a rotating portion 41d provided at the tip of the main body portion 41c. ing. The rotating portion 41d has a through hole penetrating vertically. In this embodiment, the rotating portion 41d is formed in a cylindrical shape. A through-hole 41e is formed through the body portion 41c in the vertical direction. As shown in FIG. 3, in the long side direction of the work floor 12, the distance d1 between the center of the through-hole 41e and the center of the work floor 12 is the distance between the center of the through-hole 41e and the axes of the columns 40a and 42a. It is preferably smaller than d2. In this embodiment, in the long side direction of the work floor 12, the through hole 41e is positioned on the other side (the side of the columns 44a and 46a) of the center of the horizontal member 40b.

As shown in FIG. 7, the horizontal member 40c is provided below the horizontal member 40b. One end of the horizontal member 40c is connected to the strut 40a. In this embodiment, one end of the horizontal member 40c is fixed to the second member 41b, like the horizontal member 40b. In this embodiment, the horizontal member 40c has a columnar or tubular main body portion 41f extending horizontally from the post 40a (second member 41b), and a rotating portion 41g provided at the tip of the main body portion 41f. ing. The rotating portion 41g has a through hole penetrating vertically. In this embodiment, the rotating portion 41g is formed in a cylindrical shape. In the body portion 41f, a through hole 41h is formed so as to penetrate vertically so as to be positioned below the through hole 41e. In the long side direction of the work floor 12 (see FIG. 3), the distance between the center of the through-hole 41h and the center of the work floor 12 is smaller than the distance between the center of the through-hole 41h and the axes of the columns 40a and 42a. is preferred. In this embodiment, in the long side direction of the work floor 12, the through hole 41h is positioned on the other side (pillars 44a, 46a side) of the center of the horizontal member 40c.

The horizontal member 40d is provided below the horizontal member 40c. One end of the horizontal member 40d is connected to the strut 40a. In this embodiment, one end of the horizontal member 40d is fixed to the second member 41b, similarly to the horizontal members 40b and 40c. In this embodiment, the horizontal member 40d has a columnar or tubular main body portion 41i extending horizontally from the post 40a (second member 41b), and a rotating portion 41j provided at the tip of the main body portion 41i. ing. The rotating portion 41j has a through hole penetrating vertically. In this embodiment, the rotating portion 41j is formed in a cylindrical shape. A through hole 41k is formed in the body portion 41i so as to penetrate vertically so as to be positioned below the through holes 41e and 41h. In the long side direction of the work floor 12 (see FIG. 3), the distance between the center of the through-hole 41k and the center of the work floor 12 is smaller than the distance between the center of the through-hole 41k and the axes of the columns 40a and 42a. is preferred. In this embodiment, in the long side direction of the work floor 12, the through hole 41k is positioned on the other side (pillars 44a, 46a side) of the center of the horizontal member 40d.

The vertical member 40e connects the horizontal member 40b and the horizontal member 40c, and the vertical member 40f connects the horizontal member 40c and the horizontal member 40d. When viewed from above, the horizontal member 40b, the horizontal member 40c, and the horizontal member 40d are provided so as to extend in the same direction from the column 40a.

As shown in FIG. 8, the support 42 has a support 42a extending in the vertical direction, a plurality of horizontal members 42b and 42c extending in the horizontal direction, a vertical member 42d extending in the vertical direction, and a diagonal member 42e extending obliquely in the vertical direction. is doing. The column 42a is supported by casters 42f having wheels. The caster 42f is attached to the support|pillar 42a so that it can turn around the rotating shaft extended in an up-down direction. As shown in FIG. 4, when the work platform 10 is used, the corners 12b of the work floor 12 are supported by the supports 42a. In this embodiment, the pillars 40a and 42a are arranged apart from each other in the short side direction and support the work floor 12 on one side of the center of the work floor 12 in the long side direction. Corresponds to one pillar.

As shown in FIG. 8, in the present embodiment, the post 42a has a columnar or tubular first member 43a, a tubular second member 43b, and a columnar or tubular third member 43z. The upper portion of the first member 43a is inserted into the second member 43b from below the second member 43b. The second member 43b is configured to be vertically movable with respect to the first member 43a and to be fixed to the first member 43a at a predetermined height. In this embodiment, the vertical length of the support 42 can be adjusted by adjusting the fixed height of the second member 43b with respect to the first member 43a. The lower portion of the third member 43z is inserted into the second member 43b from above the second member 43b. The third member 43z is configured to be vertically movable with respect to the second member 43b and to be fixed to the second member 43b at a predetermined height. The third member 43z will be described later. The caster 42f is attached to the lower end of the first member 43a.

One end of the horizontal member 42b is connected to the strut 42a. In this embodiment, one end of the horizontal member 42b is fixed to the second member 43b of the support 42a. In this embodiment, the horizontal member 42b has a columnar or tubular main body portion 43c extending horizontally from the post 42a (second member 43b), and a rotating portion 43d provided at the tip of the main body portion 43c. ing. The rotating portion 43d has a through hole penetrating vertically. In this embodiment, the rotating portion 43d is formed in a cylindrical shape. A through-hole 43e is formed through the body portion 43c in the vertical direction. As shown in FIG. 3, in the long side direction of the work floor 12, the distance between the center of the through hole 43e and the center of the work floor 12 is greater than the distance between the center of the through hole 43e and the axes of the columns 40a and 42a. is preferably small. In this embodiment, in the long side direction of the work floor 12, the through hole 43e is positioned on the other side (the side of the columns 44a and 46a) of the center of the horizontal member 42b.

As shown in FIG. 8, the horizontal member 42c is provided below the horizontal member 42b. One end of the horizontal member 42c is connected to the strut 42a. In this embodiment, one end of the horizontal member 42c is fixed to the second member 43b, like the horizontal member 42b. In this embodiment, the horizontal member 42c has a columnar or tubular main body portion 43f extending horizontally from the post 42a (second member 43b), and a rotating portion 43g provided at the tip of the main body portion 43f. ing. The rotating portion 43g has a through hole penetrating vertically. In this embodiment, the rotating portion 43g is formed in a cylindrical shape. In the main body portion 43f, a through hole 43h is formed to penetrate vertically so as to be positioned below the through hole 43e. In the long side direction of the work floor 12 (see FIG. 3), the distance between the center of the through-hole 43h and the center of the work floor 12 is smaller than the distance between the center of the through-hole 43h and the axes of the columns 40a and 42a. is preferred. In the present embodiment, the through-hole 43h is positioned on the other side (pillars 44a, 46a side) of the center of the horizontal member 42c in the long side direction of the work floor 12 .

The vertical member 42d connects the horizontal member 42b and the horizontal member 42c. The diagonal member 42e connects the lower portion of the second member 43b and the upper portion of the vertical member 42d. In addition, when viewed from above, the horizontal member 42b and the horizontal member 42c are provided so as to extend in the same direction from the column 42a.

As shown in FIG. 9, the support 44 has a configuration similar to that of the support 42 . Accordingly, although the structure of the support 44 will be briefly described below, the support 44, like the support 42, has a column 44a, horizontal members 44b and 44c, vertical members 44d, and diagonal members 44e. there is The support 44a is supported by casters 44f. As shown in FIG. 4, when the work platform 10 is used, the corners 12c of the work floor 12 are supported by the supports 44a.

As shown in FIG. 9, the post 44a has a first member 45a, a second member 45b and a third member 45z. The horizontal member 44b has a body portion 45c and a rotating portion 45d. A through hole 45e is formed in the body portion 45c. The horizontal member 44c has a body portion 45f and a rotating portion 45g. A through hole 45h is formed in the body portion 45f so as to be positioned below the through hole 45e. As shown in FIG. 3, in the long side direction of the working floor 12, the distance d3 between the center of the through-hole 45e and the center of the working floor 12 is the distance between the center of the through-hole 45e and the axes of the columns 44a and 46a. It is preferably smaller than d4. In this embodiment, in the long side direction of the work floor 12, the through hole 45e is positioned on one side (sides of the columns 40a and 42a) of the center of the horizontal member 44b. Similarly, in the long side direction of the work floor 12, the distance between the center of the through hole 45h and the center of the work floor 12 is smaller than the distance between the center of the through hole 45h and the axes of the columns 44a and 46a. preferable. In this embodiment, in the long side direction of the work floor 12, the through hole 45h is positioned on one side (pillars 40a, 42a side) of the center of the horizontal member 44c.

As shown in FIG. 10 , the support 46 has the same configuration as the support 40 . Therefore, although the structure of the support 46 will be briefly described below, the support 46 has a column 46a, horizontal members 46b, 46c, 46d, and vertical members 46e, 46f. The strut 46a is supported by casters 46g. As shown in FIG. 4, when the working scaffold 10 is used, the corners 12d of the working floor 12 are supported by the supports 46a. In this embodiment, the pillars 44a and 46a are arranged apart from each other in the short side direction and support the work floor 12 on the other side of the center of the work floor 12 in the long side direction. It corresponds to 2 pillars.

As shown in FIG. 10, the post 46a has a first member 47a, a second member 47b and a third member 47z. The horizontal member 46b has a body portion 47c and a rotating portion 47d. A through hole 47e is formed in the body portion 47c. The horizontal member 46c has a body portion 47f and a rotating portion 47g. A through hole 47h is formed in the body portion 47f so as to be positioned below the through hole 47e. The horizontal member 46d has a body portion 47i and a rotating portion 47j. A through hole 47k is formed in the body portion 47i so as to be positioned below the through holes 47e and 47h. As shown in FIG. 3, in the long side direction of the work floor 12, the distance between the center of each through hole 47e, 47h, 47k and the center of the work floor 12 is the same as the center of each through hole 47e, 47h, 47k and each support. It is preferably smaller than the distance from the axis of 44a, 46a. In the present embodiment, the through holes 47e, 47h, 47k are positioned on one side (pillars 40a, 42a side) of the centers of the horizontal members 46b, 46c, 46d in the long side direction of the work floor 12 .

As shown in FIG. 6, in the support unit 14a, the horizontal member 42b of the support 42 passes between the horizontal member 40b and the horizontal member 40c of the support 40, and the horizontal member 40d of the support 40 is above the horizontal member 40d. The support 40 and the support 42 are arranged to cross each other so that the horizontal member 42c of the support 42 passes through. In this state, the vertically extending connecting shaft 30 is inserted into the through hole 41e of the horizontal member 40b, the through hole 43e of the horizontal member 42b, and the through hole 41h of the horizontal member 40c. Also, the connecting shaft 32 extending in the vertical direction is inserted into the through hole 43h of the horizontal member 42c and the through hole 41k of the horizontal member 40d.

With such a configuration, in the present embodiment, the horizontal member 40b and the horizontal member 42b intersect each other in an X shape when viewed from above and are connected to each other so as to be horizontally rotatable. Further, the horizontal member 42b and the horizontal member 40c intersect each other in an X shape when viewed from above, and are connected so as to be horizontally rotatable with respect to each other. Further, the horizontal member 42c and the horizontal member 40d intersect in an X shape when viewed from above and are connected to each other so as to be able to rotate in the horizontal direction. In this embodiment, the horizontal members 40b, 40c, 40d, 42b, 42c, the vertical members 40e, 40f, 42d, and the diagonal member 42e constitute the first elastic portion 48a.

In the support unit 14b, the horizontal member 44c of the support 44 is positioned above the horizontal member 46d of the support 46 so that the horizontal member 44b of the support 44 passes between the horizontal members 46b and 46c of the support 46. A support 44 and a support 46 are arranged to cross each other so that the . In this state, the vertically extending connecting shaft 34 is inserted into the through hole 47e of the horizontal member 46b, the through hole 45e of the horizontal member 44b, and the through hole 47h of the horizontal member 46c. A connecting shaft 36 extending in the vertical direction is inserted into the through hole 45h of the horizontal member 44c and the through hole 47k of the horizontal member 46d.

With such a configuration, in the present embodiment, the horizontal member 46b and the horizontal member 44b intersect each other in an X shape when viewed from above and are connected to each other so as to be able to rotate in the horizontal direction. Further, the horizontal member 44b and the horizontal member 46c intersect in an X shape when viewed from above and are connected so as to be able to rotate in the horizontal direction with respect to each other. Further, the horizontal member 44c and the horizontal member 46d intersect in an X shape when viewed from above and are connected so as to be able to rotate horizontally with respect to each other. In this embodiment, the horizontal members 44b, 44c, 46b, 46c and 46d, the vertical members 44d, 46e and 46f and the diagonal member 44e constitute the second stretchable portion 48b.

As described with reference to FIG. 3, in the present embodiment, the distance between the centers of the through holes 41e, 43e, 41h, 43h, and 41k and the center of the work floor 12 in the long side direction of the work floor 12 is , the distance between the center of each through hole 41e, 43e, 41h, 43h, 41k and the axis of each support 40a, 42a. For this reason, in the present embodiment, in the long side direction of the work floor 12, the rotation center of each of the horizontal members 40b, 42b, 40c, 42c, and 40d (the axis of each of the connecting shafts 30 and 32) and the center of the work floor 12 is smaller than the distance between the center of rotation of each of the horizontal members 40b, 42b, 40c, 42c and 40d and the center of axis of each of the struts 40a and 42a. In other words, in the present embodiment, the swing center (connecting shafts 30, 32) of the first elastic portion 48a is eccentric from the center of the first elastic portion 48a to the other side (pillars 44a, 46a) in the long side direction. position.

Similarly, in this embodiment, in the long side direction of the work floor 12, the center of rotation of each of the horizontal members 46b, 44b, 46c, 44c, and 46d (the center of each connecting shaft 34, 36) and the center of the work floor 12 is smaller than the distance between the center of rotation of each of the horizontal members 46b, 44b, 46c, 44c, 46d and the center of axis of each of the struts 44a, 46a. In other words, in the present embodiment, the swing center (connecting shafts 34, 36) of the second elastic portion 48b is eccentric to one side (pillars 40a, 42a side) from the center of the second elastic portion 48b in the long side direction. position.

By configuring the first elastic portion 48a and the second elastic portion 48b in this way, as shown in FIG. The height can be shorter than the distance between struts 40a and 42a and the distance between struts 44a and 46a.

Although detailed description is omitted, the upper ends of the columns 40a, 42a, 44a, and 46a are detachably attached to the work floor 12. As shown in FIG. In this embodiment, the third members 41z, 43z, 45z, and 47z are configured to be attachable to and detachable from the work floor 12 . When the working floor 12 is stored as described later, the upper ends (third members 41z, 43z, 45z, 47z) of the columns 40a, 42a, 44a, 46a are removed from the working floor 12. As shown in FIG. In this embodiment, when the working floor 12 is attached to the third members 41z, 43z, 45z, and 47z, the third members 41z, 43z, 45z, and 47z are at the highest positions, and the second members 41b and 43b are , 45b and 47b. On the other hand, when the work floor 12 is stored (when the third members 41z, 43z, 45z, and 47z are removed from the work floor 12), the third members 41z, 43z, 45z, and 47z are placed at the lowest position and placed at the second position. It is fixed to members 41b, 43b, 45b and 47b. In this embodiment, the height of the work floor 12 can be adjusted by adjusting the fixed height of the second members 41b, 43b, 45b, 47b with respect to the first members 41a, 43a, 45a, 47a. Furthermore, the third member 41B, 43B, 45B, 47B, 3st member 3st member 41z, 43z, 45z, and 47z can be adjusted to adjust the height of the work floor 12 so that the height of the work floor can be adjusted. 44a and 46a may be configured.

Next, a method for connecting the support unit 14a and the support unit 14b will be described. In FIG. 11, (a) is a plan view of the working scaffold 10, and (b) is a front view of the working scaffold 10. As shown in FIG. In addition, in FIG. 11, illustration of the working floor 12 is omitted in order to facilitate understanding of the construction of the working scaffold 10. As shown in FIG. FIG. 12 is a diagram of the connecting portion 16 and its surroundings viewed from one side in the long-side direction. In FIG. 12, only rotating parts 41d, 41g, 43d, 45d, 47d, and 47g are shown among the constituent elements of supports 40, 42, 44, and 46 in order to simplify the drawing.

As shown in FIGS. 11 and 12, in this embodiment, connecting shafts 50 extending in the vertical direction are connected to the rotating portion 41d of the support 40, the rotating portion 45d of the supporting member 44, and the rotating portion 41g of the support 40. is inserted. The rotating portion 41d, the rotating portion 45d, and the rotating portion 41g are connected so as to be horizontally rotatable with respect to each other with the connecting shaft 50 as the rotation axis. As a result, the horizontal member 40b can be horizontally rotated about the rotating portion 41d, the horizontal member 44b can be horizontally rotated about the rotating portion 45d, and the horizontal member 40c can be horizontally rotated about the rotating portion 41g. can rotate horizontally around

Further, in the present embodiment, the connecting shaft 52 extending in the vertical direction is inserted into the rotating portion 47d of the support 46, the rotating portion 43d of the supporting member 42, and the rotating portion 47g of the supporting member 46. As shown in FIG. The rotating portion 47d, the rotating portion 43d, and the rotating portion 47g are connected so as to be horizontally rotatable with respect to each other with the connecting shaft 52 as the rotation axis. As a result, the horizontal member 46b can be horizontally rotated around the rotating portion 47d, the horizontal member 42b can be horizontally rotated around the rotating portion 43d, and the horizontal member 46c can be rotated around the rotating portion 47g. It can rotate horizontally around the center.

As shown in FIG. 11, a vertically extending connecting shaft 54 is inserted into the rotating portion 43g of the horizontal member 42c and the rotating portion 47j of the horizontal member 46d. The rotating portion 43g and the rotating portion 47j are connected so as to be horizontally rotatable with respect to each other with the connecting shaft 54 as the rotation axis. As a result, the horizontal member 42c can be horizontally rotated around the rotating portion 43g, and the horizontal member 46d can be horizontally rotated around the rotating portion 47j. Referring to FIG. 6, similarly, vertically extending connecting shafts (not shown) are inserted into the rotating portion 45g of the horizontal member 44c and the rotating portion 41j of the horizontal member 40d. The rotating portion 45g and the rotating portion 41j are connected so as to be horizontally rotatable with respect to each other with the connecting shaft as the rotation axis. As a result, the horizontal member 44c can be horizontally rotated around the rotating portion 45g, and the horizontal member 40d can be horizontally rotated around the rotating portion 41j.

As described above, the support unit 14a and the support unit 14b are connected. In this embodiment, the support unit 14a and the support unit 14b are arranged so that the connecting shaft 30 and the connecting shaft 32 are coaxially positioned, and the connecting shaft 34 and the connecting shaft 36 are positioned coaxially. are concatenated. Further, in the present embodiment, the connecting shaft 52 and the connecting shaft 54 are positioned coaxially, and the connecting shaft 50 and the connecting shafts inserted into the rotating portions 41j and 45g are positioned coaxially. , the support unit 14a and the support unit 14b are connected.

Next, the connecting portion 16 will be described. 13 is a diagram showing the AA portion of FIG. 12. FIG. As shown in FIGS. 11 to 13, the connecting portion 16 is provided to extend in the short side direction so as to connect the connecting shaft 50 and the connecting shaft 52 . As shown in FIG. 12 , in the present embodiment, the connection portion 16 includes a pair of first connection members 60 arranged apart in the vertical direction and a pair of second connection members 62 arranged apart in the vertical direction. , and a pair of guide members 64 spaced apart in the vertical direction.

The first connecting member 60 is provided so as to extend from the connecting shaft 50 toward the connecting shaft 52 side. In this embodiment, the first connecting member 60 includes a first cylindrical portion 60a into which the connecting shaft 50 is inserted, and a second cylindrical portion 60b extending from the first cylindrical portion 60a toward the connecting shaft 52 side. have. The second tubular portion 60b opens toward the connecting shaft 52 side. Through holes 60c are formed on both sides of the second tubular portion 60b in the long side direction so as to extend in the short side direction.

The second connecting member 62 is provided so as to extend from the connecting shaft 52 toward the connecting shaft 50 side. In the present embodiment, the second connecting member 62 includes a first cylindrical portion 62a into which the connecting shaft 52 is inserted, and a second cylindrical portion 62b extending from the first cylindrical portion 62a toward the connecting shaft 50. have. The second tubular portion 62b opens toward the connecting shaft 50 side. Through holes 62c are formed on both sides of the second tubular portion 62b in the long side direction so as to extend in the short side direction.

The guide member 64 is provided so as to be relatively movable in the short side direction with respect to the first connection member 60 and the second connection member 62 . In this embodiment, the guide member 64 is formed in a columnar or tubular shape and is slidably inserted into the second tubular portions 60b and 62b.

A locking member 66 a is provided so as to protrude from the guide member 64 at one end side (connecting shaft 50 side) of the guide member 64 , and protrude from the guide member 64 at the other end side (connecting shaft 52 side) of the guide member 64 . is provided with a locking member 66b. The locking member 66a is provided so as to pass through the through hole 60c of the second tubular portion 60b, and the locking member 66b is provided so as to pass through the through hole 62c of the second tubular portion 62b. In the present embodiment, the engaging members 66a are engaged with both ends of the through hole 60c in the short side direction, thereby restricting the movement range of the first connecting member 60 with respect to the guide member 64 to a predetermined range. The movement range of the second connection member 62 with respect to the guide member 64 is restricted to a predetermined range by engaging the stop members 66b with both ends of the through hole 62c in the short side direction. In this embodiment, the through hole 60c and the locking member 66a function as a first regulation mechanism that regulates the movement range of the first connecting member 60 with respect to the guide member 64 within a predetermined range. functions as a second restricting mechanism that restricts the movement range of the second connecting member 62 with respect to the guide member 64 to a predetermined range. The movement range of the first connection member 60 and the second connection member 62 with respect to the guide member 64 can be adjusted by adjusting the lengths of the through holes 60c and 62c in the short side direction.

In this embodiment, the upper second tubular portion 60b and the lower second tubular portion 60b are connected by a plurality of longitudinal members 68a, and the upper second tubular portion 62b and the lower tubular portion 62b are connected to each other. is connected to the second tubular portion 62b by a plurality of longitudinal members 68b. Therefore, in this embodiment, the pair of first connection members 60 can be moved integrally with respect to the guide member 64, and the pair of second connection members 62 can be integrally moved with respect to the guide member 64. can be done. As a result, the first connection member 60 and the second connection member 62 can be prevented from tilting with respect to the guide member 64, and the first connection member 60 and the second connection member 62 can be smoothly moved with respect to the guide member 64. can be done.

Next, the support mechanism 18 will be explained. As shown in FIG. 3, the support mechanism 18 is supported by the connecting portion 16 and supports the central portion of the working floor 12 in the longitudinal direction. As shown in FIGS. 11 to 13, the support mechanism 18 is supported by a pair of guide members 64 in this embodiment.

More specifically, the support mechanism 18 has a pair of plate-shaped fixed support portions 80 supported by the pair of guide members 64 . Each fixed support portion 80 is provided so as to be sandwiched between a pair of guide members 64 . In each fixed support portion 80, a plate-shaped first rotation support portion 82a is provided on one side of the center in the long side direction, and a plate-shaped second rotation support portion 82a is provided on the other side of the center in the long side direction. A portion 82b is provided. Each of the first rotation support portion 82a and the second rotation support portion 82b is supported by the fixed support portion 80 so as to be rotatable about a rotation axis extending in the short side direction.

As shown in FIGS. 11, 13 and 14, in this embodiment, the first rotation support portion 82a is connected to the fixed support portion 80 via a connection shaft 84a extending in the short side direction. 84a is rotated as a rotation axis. The second rotation support portion 82b is connected to the fixed support portion 80 via a connection shaft 84b extending in the short side direction, and rotates about the connection shaft 84b as a rotation axis.

As shown in FIG. 14, a through hole 81a is formed in the fixed support portion 80 near the connecting shaft 84a. A through hole 83a is formed in the vicinity of the connecting shaft 84a in the first rotation support portion 82a. Similarly, a through hole 81b is formed in the fixed support portion 80 near the connecting shaft 84b. A through hole 83b is formed in the vicinity of the connecting shaft 84b in the second rotation support portion 82b.

As shown in FIG. 13, the through holes 81a and 83a are formed so as to overlap each other when viewed from the short side direction. Similarly, the through hole 81b and the through hole 83b are formed so as to overlap each other when viewed from the short side direction. Therefore, in the present embodiment, by inserting a rod-like member (not shown) into the through holes 81a and 83a, the rotation of the first rotation support portion 82a with respect to the fixed support portion 80 can be prevented. Similarly, by inserting rod-shaped members (not shown) into the through holes 81b and 83b, it is possible to prevent the rotation of the second rotation support portion 82b with respect to the fixed support portion 80. As shown in FIG.

4 and 11, the pair of first rotation support portions 82a are fixed to the pair of connecting members 20b. Thereby, the first floor portion 20 rotates integrally with the first rotation support portion 82 a with respect to the fixed support portion 80 . Also, the pair of second rotation support portions 82b are fixed to the pair of connecting members 22b. As a result, the second floor portion 22 rotates integrally with the second rotation support portion 82b with respect to the fixed support portion 80 .

As shown in FIG. 11, a pair of connecting members 70 extending in the longitudinal direction are provided to connect the pair of struts 40a, 42a and the pair of struts 44a, 46a. In this embodiment, the connecting material 70 on one side in the short side direction is provided to connect the first member 41a of the support 40a and the first member 45a of the support 44a, and the connecting material on the other side in the short side direction 70 is provided to connect the first member 43a (see FIG. 8) of the support 42a and the first member 47a (see FIG. 10) of the support 46a.

15A and 15B are diagrams showing the connecting material 70, in which FIG. 15A is a plan view and FIG. 15B is a front view. As shown in FIG. 15, the connecting member 70 includes a first rod-shaped member 71a, a second rod-shaped member 71b, a first connecting member 71c, a second connecting member 71d, a locking member 71e, and a restricting member 71f.

FIG. 16 shows the connecting member 70 in the vicinity of the connecting portion between the first rod-shaped member 71a and the first connecting member 71c, the vicinity of the connecting portion between the first rod-shaped member 71a and the second rod-shaped member 71b, and the second rod-shaped member 71b. and a second connecting member 71d, where (a) is a plan view and (b) is a front view. 17A and 17B are diagrams showing the first rod-shaped member 71a, in which (a) is a plan view, (b) is a left side view, (c) is a front view, (d) is a right side view, and (e) is a bottom view. It is a diagram. FIG. 18 is a diagram showing the second rod-shaped member 71b, (a) is a plan view, (b) is a left side view, (c) is a front view, (d) is a right side view, and (e) is a bottom view. It is a diagram. 17(a), (c), and (e), illustration of the central portion of the first rod-shaped member 71a is omitted, and in FIGS. 18(a), (c), and (e), the second Illustration of the central portion of the rod-shaped member 71b is omitted.

As shown in FIGS. 16 and 17, the first rod-shaped member 71a has a cylindrical shape. A notch 700 is formed at the end of the first rod-like member 71a on the side of the first connecting member 71c. The notch 700 is formed in the upper portion of the first rod-shaped member 71a. An arcuate slope 702 is formed at the end of the first rod-shaped member 71a on the locking member 71e side. The slope 702 is formed so as to face obliquely upward.

As shown in FIGS. 16 and 18, the second rod member 71b has a cylindrical shape. A notch 704 is formed at the end of the second rod-like member 71b on the side of the second connecting member 71d. The notch 704 is formed in the upper portion of the second rod-shaped member 71b. An arcuate slope 706 is formed at the end of the second rod-shaped member 71b on the locking member 71e side. The slope 706 is formed to face obliquely upward.

As shown in FIG. 16, the first connecting member 71c includes a cylindrical rotating member 708 and a plate-like supporting member 710. As shown in FIG. Support member 710 is fixed to the outer peripheral surface of rotating member 708 . The support member 710 is provided so as to extend in the radial direction of the rotating member 708 . Similarly, the second connecting member 71 d includes a cylindrical rotating member 712 and a plate-like supporting member 714 . The support member 714 is fixed to the outer peripheral surface of the rotating member 712 . The support member 714 is provided so as to extend in the radial direction of the rotating member 712 .

In this embodiment, the support member 710 of the first connecting member 71c is fitted into the notch 700 of the first rod-like member 71a. The first rod-shaped member 71 a is connected to the support member 710 via the shaft member 800 . Thereby, the first rod-shaped member 71a is supported by the support member 710 so as to be swingable in the circumferential direction of the shaft member 800 . Similarly, the support member 714 of the second connecting member 71d is fitted into the notch 704 of the second rod-shaped member 71b. The second rod-shaped member 71b is connected to the support member 714 via the shaft member 802. As shown in FIG. Thereby, the second rod-shaped member 71b is supported by the support member 714 so as to be swingable in the circumferential direction of the shaft member 802 . Various rod-shaped members such as bolts can be used as the shaft members 800 and 802 . The same applies to the shaft member to be described later.

FIG. 19 shows the locking member 71e and the restricting member 71f, where (a) is a front view and (b) is a right side view. As shown in FIGS. 16 and 19, the locking member 71e has a body portion 716 with an inverted U-shaped cross section and a cylindrical support portion 718. As shown in FIGS. In this embodiment, the body portion 716 has a pair of side wall portions 716a and 716b and a top plate portion 716c connecting the upper ends of the pair of side wall portions 716a and 716b. The support portion 718 is fixed on the top plate portion 716c at one end portion in the length direction of the main body portion 716 .

The regulating member 71f has an inverted U-shaped cross section. In this embodiment, the restricting member 71f is swingably supported by the supporting portion 718 via the shaft member 804 . More specifically, the restricting member 71f is supported by the supporting portion 718 so as to be able to swing in the circumferential direction of the shaft member 804 .

As shown in FIG. 16, the end of the first rod-shaped member 71a and the end of the second rod-shaped member 71b are respectively fitted into the body portion 716 of the locking member 71e. In this embodiment, the first rod-like member 71a is connected to the body portion 716 via the shaft member 806 . Thereby, the first rod-like member 71a is supported by the main body portion 716 so as to be swingable in the circumferential direction of the shaft member 806 . Similarly, the second rod-shaped member 71b is connected to the body portion 716 via a shaft member 808. As shown in FIG. Thereby, the second rod-shaped member 71b is supported by the body portion 716 so as to be swingable in the circumferential direction of the shaft member 808 . With such a configuration, the first rod-shaped member 71a and the second rod-shaped member 71b can rotate vertically with respect to the locking member 71e.

20A and 20B are diagrams for explaining the relationship between the strut 40a and the connecting material 70. FIG. It is a diagram showing a bb portion of (a). In addition, in FIG.20(b), in order to avoid drawing becoming complicated, illustration of the caster 40g is abbreviate|omitted.

As shown in FIG. 20, the rotating member 708 is fitted to the first member 41a so that the first member 41a of the post 40a passes through the rotating member 708 of the first connecting member 71c. The rotating member 708 is provided so as not to move vertically with respect to the column 40a. Specifically, in this embodiment, the rotating member 708 is supported from below by the casters 40g, thereby restricting the downward movement of the rotating member 708 with respect to the column 40a. Further, the upward movement of the rotating member 708 with respect to the column 40a is regulated by the regulating member 41y provided on the outer peripheral surface of the first member 41a. With such a configuration, the first rod-like member 71a is connected to the post 40a via the first connecting member 71c so as to be vertically rotatable with respect to the post 40a.

In addition, in this embodiment, the rotating member 708 is fitted to the first member 41a so as to be horizontally rotatable around the support 40a (the first member 41a). Thereby, as shown in FIG. 21, the first rod-shaped member 71a and the strut 40a (the first member 41a) can rotate horizontally with respect to each other.

Referring to FIG. 11(b), although detailed description is omitted, the second connecting member 71d and the strut 44a are connected in the same manner as the connection between the first connecting member 71c and the strut 40a described above. . That is, the second rod-shaped member 71b is connected to the post 44a via the second connecting member 71d so as to be vertically rotatable with respect to the post 44a. In addition, the second rod-shaped member 71b and the strut 44a can rotate horizontally with respect to each other.

Further, in the present embodiment, the first rod-shaped member 71a and the second rod-shaped member 71b can rotate vertically with respect to the locking member 71e at the central portion of the connecting member 70 in the long side direction. As a result, as shown in FIG. 22, the connecting member 70 on one side in the short side direction can be bent upward between the support 40a and the support 44a.

Although detailed description is omitted, the joint material 70 and the pair of pillars 42a and 46a arranged on the other side in the short side direction are the joint material 70 and the pair of pillars 40a and 46a arranged on one side in the short side direction. 44a is connected in a manner similar to the connection with 44a. Therefore, the connecting member 70 on the other side in the short side direction can also be bent upward between the support 42a and the support 46a.

With reference to FIG. 16, in the present embodiment, the fact that the central portion of the connecting material 70 in the long side direction is bent downward means that the engaging member 71e provided at the central portion of the connecting material 70 is This is prevented by engaging with the first rod-shaped member 71a and the second rod-shaped member 71b. Furthermore, in the present embodiment, the end of the first rod-shaped member 71a on the side of the first connecting member 71c contacts the support member 710 from below, and the end of the second rod-shaped member 71b on the side of the second connecting member 71d contacts the support member 710 from below. By contacting the support member 714 from below, it is possible to reliably prevent the central portion of the connecting member 70 from bending downward in the long side direction. Thereby, when the working scaffolding 10 is used, the distance in the longitudinal direction between the columns 40a, 42a and the columns 44a, 46a can be appropriately maintained.

(Action and effect of working scaffolding)
In the work scaffolding 10 according to the present embodiment, the pair of struts 40a, 42a and the pair of struts 44a, 46a are connected via the first stretchable portion 48a and the second stretchable portion 48b. Each of the first stretchable portion 48a and the second stretchable portion 48b is configured to be stretchable in the long side direction. The first expansion/contraction portion 48a has a plurality of horizontal members that intersect in an X shape when viewed from above and are connected so as to be able to rotate in the horizontal direction. Similarly, the second stretchable portion 48b has a plurality of horizontal members that intersect in an X shape when viewed from above and are connected so as to be able to rotate in the horizontal direction.

With such a configuration, in the work scaffolding 10 according to the present embodiment, as shown in FIGS. 11 and 22, the pair of struts 40a and 42a and the pair of struts 44a and 46a approach in the long side direction, the first The horizontal members 40b and 40c and the horizontal member 42b are arranged horizontally with respect to each other around the connecting shaft 30 (not shown in FIG. 22(b)) so that the length of the expandable portion 48a in the long side direction becomes small. As a result, the horizontal member 42c and the horizontal member 40d rotate horizontally with respect to each other around the connecting shaft 32 (see FIG. 11(b); illustration is omitted in FIG. 22(b)). In addition, the horizontal members 46b, 46c and the horizontal member 44b are arranged with respect to each other around the connecting shaft 34 (not shown in FIG. 22(b)) so that the dimension in the long side direction of the second expandable portion 48b becomes small. , and the horizontal member 44c and the horizontal member 46d rotate horizontally with respect to each other around the connecting shaft 36 (see FIG. 11(b); not shown in FIG. 22(b)). do.

On the other hand, the horizontal members 40b, 40c and the horizontal member 42b are arranged so that the dimension in the long side direction of the first elastic portion 48a increases as the pair of pillars 40a, 42a and the pair of pillars 44a, 46a are separated in the long side direction. rotate about the connecting shaft 30 in the horizontal direction with respect to each other, and the horizontal member 42c and the horizontal member 40d rotate about the connecting shaft 32 in the horizontal direction with respect to each other. Further, the horizontal members 46b and 46c and the horizontal member 44b are horizontally rotated with respect to each other about the connecting shaft 34 so that the dimension in the long side direction of the second expandable portion 48b is increased. The horizontal member 46d rotates about the connecting shaft 36 in the horizontal direction with respect to each other.

As described above, in the work scaffolding 10 according to the present embodiment, by rotating the horizontal members of the first elastic portion 48a and the second elastic portion 48b in the horizontal direction, the columns 40a and 42a and the columns 44a and 46a are moved. and the distance in the long side direction can be reduced. In this case, it is possible to prevent the bending force described with reference to FIG. 2 from being applied to each horizontal member, as compared with the case where the plurality of horizontal members are rotated in the vertical direction. Thereby, the work scaffolding 10 can be folded smoothly.

Further, in the work scaffolding 10 according to the present embodiment, the first telescoping portion 48a and the second telescoping portion 48b are arranged side by side in the longitudinal direction. The dimension of the scaffold 10 in the long side direction can be made sufficiently small. Further, in the present embodiment, the first stretchable portion 48a and the second stretchable portion 48b are configured by connecting a plurality of horizontal members in the long side direction, so the length of each horizontal member can be shortened. As a result, when the working scaffold 10 is folded, it is possible to prevent the dimension of the working scaffold 10 in the short side direction from increasing.

Further, in the present embodiment, the connecting member 70 is bent such that the central portion in the long side direction moves upward as the pair of pillars 40a and 42a and the pair of pillars 44a and 46a approach in the long side direction. , the length in the long side direction becomes shorter. Also, as the pair of pillars 40a, 42a and the pair of pillars 44a, 46a are separated in the long side direction, the joint material 70 extends such that the central portion in the long side direction moves downward, lengthens. Thus, in this embodiment, the pair of connecting members 70 can be bent or extended according to the change in the dimension of the working scaffold 10 in the long side direction. In other words, the lengthwise dimension of the pair of connecting members 70 can be changed according to the lengthwise dimension of the working scaffold 10 . In this case, the working scaffolding 10 can be folded and unfolded without removing the pair of connecting members 70 from the working scaffolding 10, thereby improving work efficiency.

In addition, in the present embodiment, the pair of connecting members 70 are connected to the connecting portions (rotating portions 41d, 41g, 41j, 43d in the present embodiment) between the first elastic portion 48a and the second elastic portion 48b in the short side direction. , 43g, 45d, 45g, 47d, 47g, 47j). In this case, when the pair of connecting members 70 are bent, the pair of connecting members 70 can be prevented from coming into contact with the connecting portion between the first stretchable portion 48a and the second stretchable portion 48b. As a result, when bending the pair of connecting members 70, the central portion of the connecting members 70 can be moved to a sufficiently high position, and the length of the pair of connecting members 70 in the long side direction can be sufficiently shortened. can do. Therefore, it is possible to sufficiently bring the pair of supports 40a, 42a and the pair of supports 44a, 46a close to each other in the long side direction, so that the working scaffold 10 can be folded into a small size.

In addition, in this embodiment, the support columns 40a, 42a, 44a, and 46a are connected to the pair of connecting members 70 so as to be horizontally rotatable with respect to the pair of connecting members 70. As shown in FIG. As a result, the posts 40 a , 42 a , 44 a , 46 a can be rotated with respect to the pair of connecting members 70 when folding and unfolding the work scaffold 10 . As a result, the work scaffolding 10 can be smoothly folded and unfolded.

When the work floor 12 of the work scaffold 10 is to be stored, first, the supports 40a, 42a, 44a, 46a and the work floor 12 are disconnected. At this time, the first rotation support portion 82 a and the second rotation support portion 82 b are set so as not to rotate with respect to the fixed support portion 80 . That is, the upper surface of the first floor portion 20 (the surface that is stepped on by the worker when using the working scaffold 10) faces upward, and the upper surface of the second floor portion 22 (the surface that is stepped on by the worker when using the working scaffold 10) faces upward. Keep facing upwards.

Next, as shown in FIG. 23(a), the distances in the longitudinal direction between the supports 40a, 42a and the supports 44a, 46a are reduced. Here, the support mechanism 18 that supports the central portion of the work floor 12 in the long side direction is supported by the connecting portion 16 . Since the connecting portion 16 is provided at the connecting portion between the first elastic portion 48a and the second elastic portion 48b, the position of the connecting portion 16 is intermediate between the struts 40a and 42a and the struts 44a and 46a. With such a configuration, when the pillars 40a, 42a and the pillars 44a, 46a are brought closer, the work floor 12 is biased to one side or the other side in the long side direction with respect to the pillars 40a, 42a, 44a, 46a. can be prevented from moving into place. Thereby, the work scaffolding 10 can be folded smoothly.

In addition, in this embodiment, the support mechanism 18 is supported by the guide member 64 (see FIG. 11A) of the connecting portion 16 . Since the guide member 64 is arranged in the central portion between the connecting shafts 50 and 52 , the support mechanism 18 can be smoothly positioned in the central portion between the connecting shafts 50 and 52 . As a result, when the pillars 40a, 42a and the pillars 44a, 46a are brought close to each other, the work floor 12 moves to one side or the other side in the short side direction with respect to the pillars 40a, 42a, 44a, 46a. can be prevented.

Finally, as shown in FIG. 23(b), the first rotation support portion 82a and the second rotation support portion 82b are brought into a state in which they can rotate with respect to the fixed support portion 80, and the first floor portion 20 and The second floor portion 22 is turned outward in the long side direction. This completes the storage of the working floor 12 . Note that FIG. 23 shows the working scaffold 10 in a state where the distance in the long side direction between the columns 40a, 42a and the columns 44a, 46a is minimized.

When folding the work scaffold 10, first, while bringing the support columns 40a and 44a close to each other, as shown in FIG. Let In this state, the regulating member 71f is rotated with respect to the locking member 71e to insert the regulating member 71f between the locking member 71e (body portion 716) and the second rod-shaped member 71b. This prevents the first rod-shaped member 71a and the second rod-shaped member 71b from rotating relative to each other such that the locking member 71e moves downward. That is, the bent state of the connecting material 70 is maintained. Next, while bringing the support columns 42a and 46a closer together, the central portion of the connecting member 70 between the supporting columns 42a and 46a is bent in the same manner as the connecting member 70 between the supporting columns 40a and 44a. After that, the pair of connecting members 70 are bent at the same time by bringing the struts 40a, 42a closer to the struts 44a, 46a. Thus, in this embodiment, one of the connecting members 70 can be bent while the other connecting member 70 is kept bent. In this case, since it is not necessary to start bending the pair of connecting members 70 at the same time, the working scaffold 10 can be easily folded by one person. Note that the structure of the restricting member for maintaining the bent state of the connecting material 70 is not limited to the above example. For example, a pin may be used as the restricting member and inserted between the locking member 71e (main body portion 716) and the second rod-shaped member 71b to maintain the bent state of the joint material 70. FIG.

When using the working scaffold 10 in which the working floor 12 is accommodated at a work site, first, the first floor section 20 and the second floor section 22 are rotated to move the working floor 12 to the state shown in FIG. 23(a). and After that, the distances in the longitudinal direction between the columns 40a, 42a and the columns 44a, 46a are increased, and the columns 40a, 42a, 44a, 46a are attached to the corners 12a to 12d of the work floor 12 as shown in FIG. .

Moreover, when using the working scaffold 10, as shown in FIG. Similarly, the strut 44a and the strut 46a are connected with a connecting material 72. As shown in FIG. This makes it possible to fix the distance in the short-side direction between the struts 40a, 44a and the struts 42a, 46a.

In this embodiment, as shown in FIG. 25, when folding the working scaffold 10, the distance between the connecting shaft 50 and the connecting shaft 52 in the short side direction increases. As a result, the first connecting member 60 and the second connecting member 62 move outward in the short side direction with respect to the guide member 64 . On the other hand, when the work scaffold 10 that has been folded is unfolded again, the distance between the connecting shaft 50 and the connecting shaft 52 is reduced as shown in FIG. 12 . As a result, the first connecting member 60 and the second connecting member 62 move inward in the short side direction with respect to the guide member 64 .

Here, in this embodiment, the movement range of the first connecting member 60 and the second connecting member 62 with respect to the guide member 64 is regulated within a predetermined range by the through holes 60c and 62c and the locking members 66a and 66b. Specifically, as shown in FIG. 25, the locking members 66a and 66b contact the inner edges of the through holes 60c and 62c in the short-side direction, thereby guiding the first connecting member 60 and the second connecting member 62. The member 64 is restricted from moving outward in the short side direction. On the other hand, as shown in FIG. 12, the locking members 66a and 66b are in contact with the outer edges of the through holes 60c and 62c in the short side direction so that the first connecting member 60 and the second connecting member 62 are attached to the guide member 64. On the other hand, it is restricted from moving inward in the direction of the short side.

In this embodiment, when the locking members 66a and 66b are in contact with the outer edges of the through holes 60c and 62c in the short side direction, the support mechanism 18 is positioned at the center between the connecting shafts 50 and 52, The through holes are arranged so that the support mechanism 18 is positioned at the center between the connecting shafts 50 and 52 when the engaging members 66a and 66b are in contact with the inner edges of the through holes 60c and 62c in the short side direction. The lengths and positions of 60c and 62c and the positions of locking members 66a and 66b are adjusted. Thereby, when folding and unfolding the work platform 10, the support mechanism 18 can be positioned in the central portion of the work platform 10 in the short side direction. As a result, the work floor 12 can be smoothly positioned at an appropriate position.

(Modified example of connecting material)
FIG. 26 is a diagram showing another example of the connecting material 70. As shown in FIG. The connecting member 70 shown in FIG. 26 differs from the connecting member 70 described above in that it includes a first rod-shaped member 73a instead of the first rod-shaped member 71a (see FIG. 16), and a second rod-shaped member 71b (see FIG. 16). 16, and a locking member 73e instead of the locking member 71e (see FIG. 16) and the restricting member 71f (see FIG. 16).

Although the details will be described later, the difference between the first rod-shaped member 73a and the first rod-shaped member 71a (see FIG. 16) is the structure of the end on the locking member 73e side. The second rod-shaped member 73b includes a cylindrical body portion 731 and a plate-shaped connecting member 732 . The locking member 73e has an inverted U-shaped cross section, similar to the body portion 716 of the locking member 71e described above.

FIG. 27 is a diagram showing the first rod-shaped member 73a and the second rod-shaped member 73b, where (a) is a plan view, (b) is a front view, and (c) is a bottom view. The end of the first rod-shaped member 73a on the side of the first connecting member 71c (see FIG. 26) has the same configuration as the end of the first rod-shaped member 71a (see FIG. 16) on the side of the first coupling member 71c. The end of the body portion 731 on the side of the second connecting member 71d (see FIG. 26) has the same configuration as the end of the second rod-shaped member 71b (see FIG. 16) on the side of the second connecting member 71d. there is Therefore, in FIG. 27, the end portion of the first rod-shaped member 73a on the side of the first connecting member 71c and the end portion of the body portion 731 on the side of the second connecting member 71d are omitted.

As shown in FIG. 27, a notch 720 is formed at the end of the first rod-like member 73a on the locking member 73e (see FIG. 26) side. The notch 720 is formed in the lower portion of the first rod-shaped member 73a. A connecting member 732 is fixed to the end of the locking member 73e (see FIG. 26) of the body portion 731 of the second rod-like member 73b. 26 and 27, in the present embodiment, the connecting member 732 of the second rod-shaped member 73b is fitted into the notch 720 of the first rod-shaped member 73a. In this state, as shown in FIG. 26, the connecting member 732 is connected via the shaft member 810 to the first rod-shaped member 73a and the locking member 73e.

In this embodiment, the first rod-shaped member 73a is fixed to the locking member 73e. In addition, the connecting member 732 is provided so as to be rotatable in the circumferential direction of the shaft member 810 with respect to the first rod-like member 73a and the locking member 73e. As a result, as shown in FIG. 28, the central portion of the connecting material 70 in the long side direction can be bent upward. In this embodiment, as shown in FIG. 26, the body portion 731 contacts the locking member 73e from below, thereby preventing the central portion of the connecting member 70 from bending downward in the long side direction. can do. Although illustration is omitted, it is preferable to provide a restricting member for maintaining the bent state of the connecting material 70 also in the present embodiment.

FIG. 29 is a diagram showing another example of the first connecting member 71c, where (a) is a front view and (b) is a right side view. The first connecting member 71c shown in FIG. 29 differs from the above-described first connecting member 71c (see FIG. 16) in that instead of the plate-like supporting member 710, a supporting member 740 having a U-shaped cross section is provided. It is a point. In this embodiment, as shown in FIG. 30 , the first rod-shaped member 71 a is connected to the support member 740 via the shaft member 800 while being fitted into the support member 740 . Thereby, the first rod-shaped member 71a is supported by the support member 740 so as to be swingable in the circumferential direction of the shaft member 800 . In this embodiment, the end portion of the first rod-shaped member 71a on the side of the support member 740 is beveled so as to have a slope 750 facing obliquely downward. As a result, when the rod-shaped member 71 a rotates upward with respect to the support member 740 , the contact of the first rod-shaped member 71 a with the bottom surface of the support member 740 can be avoided. As a result, the joint material can be bent smoothly. Further, in the present embodiment, the downward rotation of the first rod-shaped member 71a with respect to the support member 740 can be restricted by contacting the bottom surface of the support member 740 from above with the first rod-shaped member 71a. . Thereby, it is possible to prevent the connecting material from bending downward. Although detailed description is omitted, the second connecting member 71d may also be configured in the same manner as the first connecting member 71c in FIG. In this case, the end portion of the second rod-shaped member 71b on the side of the second connecting member 71d is preferably beveled so as to have a slope similar to the slope 750 described above.

(Other embodiments)
In the above-described embodiment, the case where each of the first elastic portion 48a and the second elastic portion 48b has a plurality of pairs of horizontal members crossing each other in an X shape has been described, but each of the first elastic portion and the second elastic portion , at least a pair of cross members crossed in an X shape. Therefore, each expandable portion may be configured by a pair of horizontal members that cross each other in an X shape. Specifically, in the work scaffold 10 described above, for example, the horizontal members 40c, 40d, 42c, 46c, 44c, and 46d may not be provided, and the horizontal members 40b, 40d, 42c, 46b, 44c, and 46d may be The vertical members 40e, 40f, 42d, 44d, 46e, and 46f may not be provided, and the diagonal members 42e and 44e may not be provided. In addition, when each telescoping section is composed of three or more horizontal members, at least two of them intersect each other in an X shape when viewed from above and are horizontally rotatable with respect to each other. It is sufficient if they are connected. Therefore, in the case where each telescoping section is composed of three or more horizontal members, two horizontal members and one other horizontal member are used as in the above-described relationship between the horizontal members 40b, 40c and the horizontal member 42b. may intersect in an X shape when viewed from above and be horizontally rotatably connected to each other.

As shown in FIG. 31, in the connecting portion 16, an elastic member 74 may be further provided to apply force to the first connecting member 60 and the second connecting member 62 in a direction in which the distance between them approaches. In this case, the distance between the connecting shaft 50 and the connecting shaft 52 can be easily reduced when widening the work platform 10 . That is, the dimension in the long side direction of the first elastic portion 48a and the second elastic portion 48b can be easily increased. As a result, the working scaffold 10 can be easily spread out.

As shown in FIGS. 11 and 12, in the above embodiment, the rotating portions 41d and 41g of the support 40 and the rotating portion 45d of the support 44 are connected by a common connecting shaft 50, and the support 42 The rotating portion 43d and the rotating portions 47d and 47g of the support 46 are connected by the common connecting shaft 52, but the method of connecting the support unit 14a and the support unit 14b is not limited to the above example. . For example, as shown in FIG. 32, the support unit 14a and the support unit 14b are connected to each other via a plurality of connecting members 90 and a plurality of connecting shafts 92 provided at both ends of each connecting member 90. good too.

In the above-described embodiment, the through holes 60c and 62c and the locking members 66a and 66b constitute the first and second restricting mechanisms that restrict the movement of the first connecting member 60 and the second connecting member 62 with respect to the guide member 64. Although the case has been described, the first and second regulating mechanisms are not limited to the above examples, and various known configurations can be used. For example, as shown in FIG. 33, a first regulation mechanism may be configured. The configuration shown in FIG. 33 will be briefly described below.

33A is a diagram showing the second cylindrical portion 60b of the first connection member 60 and the guide member 64, and FIG. 33B is a schematic diagram showing the bb portion of FIG. and (c) is a schematic diagram showing the cc portion of (a).

In the example shown in FIG. 33, a pair of locking members 76a and 76b are attached to the second tubular portion 60b of the first connecting member 60 so as to protrude inward. The upper portion of the guide member 64 has a shape recessed downward so as to avoid the locking member 76a. A substantially L-shaped locking member 78 is fixed to the end of the guide member 64 . In this embodiment, the locking members 76 a and 76 b are locked to the locking member 78 to restrict the movement of the first connecting member 60 with respect to the guide member 64 . That is, in this embodiment, the locking members 76a, 76b, 78 function as the first restricting mechanism. Although detailed description is omitted, the second regulation mechanism can also be configured in the same manner.

Further, as shown in FIG. 34, the support 40a and the support 42a may be connected by a plurality of stretchable connecting members 94. In addition, as shown in FIG. In addition, in FIG. 34, (a) is a left side view of the work scaffold when in use, and (b) is a left side view of the work scaffold when folded. In FIG. 34, most of the constituent elements of the work scaffold 10 are omitted in order to avoid complicating the drawing.

As shown in FIG. 34, the connecting member 94 includes a columnar or tubular inner member 94a and a tubular outer member 94b. One end of the inner member 94a is fixed to the strut 40a and one end of the outer member 94b is fixed to the strut 42a. The inner member 94a is inserted into the outer member 94b so as to be slidable in the axial direction of the outer member 94b. In this embodiment, one connecting member 94 is provided so as to connect the first member 41a of the support 40a and the first member 43a of the support 42a, and the second member 41b of the support 40a and the second member 43b of the support 42a are provided. Another connecting material 94 is provided so as to connect the . Although not shown, a pair of connecting members 94 are similarly provided between the support 44a (see FIG. 11) and the support 46a (see FIG. 11). In this embodiment, as shown in FIG. 34(a), when the working scaffold 10 is in use, the overall length of the connecting material 94 can be shortened, and as shown in FIG. The total length of the material 94 can be lengthened. As a result, when the work scaffold 10 is unfolded and folded, the work of attaching and detaching the connecting material 94 is not necessary, so work efficiency is improved.

Incidentally, in the working scaffold 10 shown in FIG. 5, one connecting member 72 is provided between the support 40a and the support 42a and between the support 44a and the support 46a. As in the working scaffold 10 described above, a plurality of tie members 72 may be provided between the struts 40a and 42a and between the struts 44a and 46a.

In the work scaffold 10 shown in FIG. 11, a pair of diagonal members (not shown) are provided so as to connect the lower portions of the columns 40a and 42a and the first telescopic portion 48a, and the lower portions of the columns 44a and 46a and the second telescopic portion 48a are connected. A pair of diagonal members (not shown) may be provided to connect the portion 48b. In this case, for example, as shown in FIG. A diagonal member 98 is provided to connect the first member 45a and the horizontal member 44c. At the tip of the diagonal member 96, a retaining member 96a is provided to prevent the diagonal member 96 from falling off from a holding member 97, which will be described later. Similarly, a stopper 98a is provided at the tip of the diagonal member 98 to prevent the diagonal member 98 from falling off from a holding member 99, which will be described later. For example, rivets, bolts, or the like can be used as the retainers 96a and 98a. Although not shown, a diagonal member is provided in the support member 42 (see FIG. 8) to connect the first member 43a and the horizontal member 42c in the same manner as the diagonal member 98 in the support member 44. Similar to the diagonal members 96 in 40, diagonal members are provided in the support 46 (see FIG. 10) to connect the first member 47a and the longitudinal member 46f. In FIG. 35, (a) shows the second member 41b fixed to the first member 41a at the lowest position, and (b) shows the second member 41b fixed to the first member 41a at the highest position. indicates the state of Similarly, in FIG. 36, (a) shows a state in which the second member 45b is fixed to the first member 45a at the lowest position, and (b) shows a state in which the second member 45b is fixed to the first member 45a at the highest position. Indicates a fixed state.

As described above, a pair of diagonal members are provided to connect the first members 41a and 43a and the first elastic portion 48a, and a pair of diagonal members are provided to connect the first members 45a and 47a and the second elastic portion 48b. By providing the diagonal members, it is possible to sufficiently prevent the work platform 10 from swaying in the longitudinal direction.

As shown in FIG. 35, in the support body 40, the first member 41a supports one end of the diagonal member 96 so that the diagonal member 96 can swing vertically, and the first elastic portion 48a (this embodiment In form, the vertical member 40f) supports the diagonal member 96 so that the diagonal member 96 can advance and retreat in the axial direction of the diagonal member 96 with respect to the first telescoping portion 48a (see FIG. 11). Further, the vertical member 40f supports a diagonal member 96 via a cylindrical holding member 97 that is swingably supported by the vertical member 40f. With such a configuration, the diagonal member 96 can be smoothly advanced and retracted with respect to the first elastic portion 48a, and the height of the support body 40 can be smoothly adjusted.

As shown in FIG. 36, in the support body 44, the first member 45a supports one end of the diagonal member 98 so that the diagonal member 98 can swing vertically, and the second stretchable portion 48b (in this embodiment, , horizontal members 44c) support the diagonal member 98 so that the diagonal member 98 can advance and retreat in the axial direction of the diagonal member 98 with respect to the second elastic portion 48b (see FIG. 11). Further, the horizontal member 44c supports a diagonal member 98 via a cylindrical holding member 99 that is swingably supported by the horizontal member 44c. With such a configuration, the diagonal member 98 can be smoothly advanced and retracted with respect to the second elastic portion 48b, and the height of the support body 44 can be smoothly adjusted.

Although illustration is omitted, the diagonal members of the support 46 (see FIG. 10) are supported by the first member 47a so as to be vertically swingable in the same manner as the diagonal member 96 of the support 40, and are also supported by the first member 47a so as to be able to swing vertically. It is supported by the second expansion/contraction part 48b (vertical member 46f in this embodiment) so as to be axially movable with respect to the part 48b (see FIG. 11). Like the diagonal member 98 in the support member 44, the diagonal member in the support member 42 (see FIG. 8) is supported by the first member 43a so as to swing vertically, 11), and is supported by the first stretchable portion 48a (in this embodiment, the horizontal member 42c) so as to be able to move forward and backward in the axial direction.

In the above example, the case where the diagonal member 96 is connected to the vertical member 40f of the support member 40 and the diagonal member (not shown) is connected to the horizontal member 42c of the support member 42 has been described. The portion where the first diagonal member is connected at 48a is not limited to the above example. Specifically, the first diagonal members may be connected to other components (for example, horizontal members 40c, 40d, etc.) that constitute the first stretchable portion 48a among the components of the support 40. At 42, the first diagonal member may be connected to other components (eg, vertical member 42d, diagonal member 42e, etc.) that make up the first telescoping portion 48a.

In the above example, the case where the diagonal member 98 is connected to the horizontal member 44c of the support member 44 and the diagonal member (not shown) is connected to the vertical member 46f of the support member 46 has been described. The portion where the second diagonal member is connected at 48b is not limited to the above example. Specifically, the second diagonal members may be connected to other components (for example, the vertical member 44d, the diagonal members 44e, etc.) that constitute the second elastic portion 48b among the components of the support 44, In the support body 46, the second diagonal members may be connected to other components (horizontal members 46c, 46d, etc.) that constitute the second elastic portion 48b.

As shown in FIG. 37, a stretchable diagonal member 200 may be provided between the struts 40a and 42a. In addition, in FIG. 37, (a) shows a state in which the height of the working scaffold 10 is lowered, and (b) shows a state in which the height of the working scaffold 10 is raised. In FIG. 37, most of the constituent elements of the working scaffold 10 are omitted in order to avoid complicating the drawing.

As shown in FIG. 37, the diagonal member 200 is provided to extend in the short side direction between the support 40a and the support 42a. In this embodiment, the diagonal member 200 includes a columnar or tubular inner member 200a and a tubular outer member 200b. The inner member 200a is inserted into the outer member 200b so as to be slidable in the axial direction of the outer member 200b. One end of the diagonal member 200 (one end of the inner member 200a in this embodiment) is supported by the second members 41b and 43b via a connecting member 94 that connects the second members 41b and 43b. ing. The other end of the diagonal member 200 (one end of the outer member 200b in this embodiment) is supported by the first members 41a and 43a via a connecting member 94 that connects the first members 41a and 43a. It is Although not shown, in the present embodiment, diagonal members 200 are similarly provided between the struts 44a (see FIG. 11) and the struts 46a (see FIG. 11) so as to extend in the short side direction.

By providing the diagonal member 200 between the support 40a and the support 42a and between the support 44a and the support 46a as described above, it is possible to sufficiently prevent the work platform 10 from swaying in the short side direction.

In this embodiment, one end of the diagonal member 200 is supported by the connecting member 94 so as to be vertically swingable. Similarly, the other end of the diagonal member 200 is supported by a connecting member 94 so as to be vertically swingable. With such a configuration, the overall length of the diagonal member 200 can be smoothly shortened when the height of the working scaffold 10 is lowered, and the overall length of the diagonal member 200 can be smoothly shortened when the height of the working scaffold 10 is raised. I can do it for a long time. Thereby, the height of the working scaffold 10 can be adjusted smoothly.

One end (upper end) of the diagonal member 200 between the columns 40a and 42a is supported by a second member of at least one of the columns 40a and 42a so as to be vertically swingable. It suffices if the portion (lower end portion) is supported by at least the other first member of the columns 40a and 42a so as to be vertically swingable. Therefore, for example, one end (upper end) of the diagonal member 200 may be directly supported by the second member 43b, and the other end (lower end) of the diagonal member 200 may be directly supported by the first member 41a. Alternatively, one end of the diagonal member 200 may be directly supported by the second member 41b, and the other end of the diagonal member 200 may be directly supported by the first member 43a. Although detailed description is omitted, the diagonal member 200 between the struts 44a and 46a also has one end (upper end) that swings vertically on the second member of at least one of the struts 44a and 46a. It suffices if it is movably supported and the other end (lower end) is supported by at least the other first member of the columns 44a and 46a so as to be vertically swingable.

ADVANTAGE OF THE INVENTION According to this invention, the working scaffolding which can be smoothly folded and can make the dimension of a long side direction small is obtained.

Reference Signs List 10 work scaffold 12 work floor 14a, 14b support unit 16 connection 18 support mechanism 20 first floor 20a frame 20b joint 22 second floor 22a frame 22b joint 30, 32, 34, 36 connecting shaft 40, 42, 44, 46 supports 40a, 42a, 44a, 46a supports 40g, 42f, 44f, 46g casters 40b, 40c, 40d, 42b, 42c, 44b, 44c, 46b, 46c, 46d cross members 41d, 41g, 41j, 43d, 43g, 45d, 45g, 47d, 47g, 47j rotating part 48a first elastic part 48b second elastic part 50, 52, 54 connecting shaft 60 first connecting member 60a first tubular part 60b second tubular part 60c through hole 62 second connecting member 62a first tubular portion 62b second tubular portion 62c through hole 64 guide member 66a, 66b locking member 68a, 68b vertical member 70, 72 connecting member 74 elastic member 76a, 76b, 78 Locking member 80 Fixed support parts 81a, 81b Through hole 82a First rotation support part 82b Second rotation support part 83a, 83b Through holes 84a, 84b Connecting shaft 90 Connecting member 92 Connecting shaft 94 Connecting member 96, 98, 200 Diagonal material

Claims (8)

a rectangular working floor;
The work floor is arranged apart from each other in the direction of the short side of the work floor and supported on one side of the center of the work floor in the direction of the long side of the work floor, and supported by casters that are respectively rotatable. a pair of first struts;
A pair of second casters which are arranged apart from each other in the short side direction, support the work floor on the other side of the center of the work floor in the long side direction, and are supported by rotatably provided casters. a stanchion;
a first telescopic part provided on one side of the center of the working floor in the longitudinal direction and connected to the pair of first pillars;
a second telescoping part provided on the other side of the center of the work floor in the longitudinal direction and connected to the first telescoping part and the pair of second struts;
a pair of connecting members extending in the long side direction so as to connect the pair of first pillars and the pair of second pillars;
The first expansion/contraction part has a pair of first horizontal members that intersect in an X shape when viewed from above and are connected so as to be able to rotate in the horizontal direction with respect to each other,
The second expansion/contraction part has a pair of second horizontal members that intersect in an X shape when viewed from above and are connected so as to be able to rotate in the horizontal direction with respect to each other,
One of the pair of connecting members connects the first support and the second support on one side in the short side direction, and the other of the pair of connecting members is the other in the short side direction. connecting the first support and the second support on the side;
The work scaffolding, wherein each of the pair of connecting members is provided so as to be bendable upward. Each of the pair of connecting members is
As the pair of first pillars and the pair of second pillars approach each other in the long side direction, they bend so that the central portion in the long side direction moves upward, and the length in the long side direction becomes shorter. ,
2. According to claim 1, wherein the pair of first struts and the pair of second struts extend so that the center portion moves downward as the pair of first struts and the pair of second struts separate in the long side direction, and the length in the long side direction increases. Working scaffolding as described. The work scaffolding according to claim 2, wherein the pair of connecting members are positioned outside a connecting portion between the first stretchable portion and the second stretchable portion in the short side direction. In the long side direction, the distance between the center of rotation of the pair of first horizontal members and the center of the work floor is the distance between the center of rotation of the pair of first horizontal members and the axis of each of the first columns. less than the distance of
In the long side direction, the distance between the center of rotation of the pair of second horizontal members and the center of the work floor is the distance between the center of rotation of the pair of second horizontal members and the axis of each of the second columns. 4. A working scaffold according to any preceding claim which is less than a distance of . 5. The work scaffold according to any one of claims 1 to 4, wherein the first strut and the second strut are connected to the tether so as to be horizontally rotatable with respect to the tether. The pair of connecting members are respectively a first rod-shaped member connected to the first post so as to be vertically rotatable with respect to the first post, and a first rod-like member that is vertically rotatable relative to the second post. A second rod-shaped member connected to the second support,
6. The first rod-shaped member and the second rod-shaped member are connected to each other so as to be vertically rotatable at a central portion of the connecting member in the long side direction. Working scaffolds as described in . Each of the pair of connecting members is engaged with the first rod-shaped member and the second rod-shaped member at the central portion of the connecting members to prevent the connecting members from bending downward. 7. A working scaffold according to claim 6, comprising members. In each of the pair of connecting members, the first rod member and the second rod member rotate relative to each other such that the locking member moves downward from a state in which the connecting members are bent upward. The working scaffold according to claim 7, comprising a regulating member that regulates the

Images