JP2002106166A - Working floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working floor which is good in assembling efficiency, smoothly moves in a manner striding an obstacle, and allows an underfloor portion thereof to be used as a storage area. SOLUTION: The working floor includes at least four supports arranged at longitudinal and lateral tip portions of a quadrangle, and each support is formed by connecting to each other a plurality of support forming bodies which are different in length. Each support has a large-diameter wheel attached to its lower end, which renders the support movable. Further, the support has a movable body fitted thereinto in a vertically movable manner, and a plurality of pin insertion holes into which pins for fixing the movable body to the support are inserted, are formed in the support forming body at suitable longitudinal intervals. Then, the movable bodies longitudinally and laterally adjacent to each other are connected together by beams to constitute a floor frame. Furthermore, the floor is mounted on the floor frame, and an elevating means for vertically elevating the movable bodies is provided for the working floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work floor serving as a scaffold for constructing a high place such as a ceiling of a structure.

[0002]

2. Description of the Related Art As a work floor serving as a scaffold when constructing a ceiling portion or the like inside a building, as shown in FIG. 27, a support 71 is attached to a work table 70 framed by a frame material such as a pipe or an angle. There is a movable work floor 73 which is constructed by providing a small-diameter wheel 72 at the lower end of a column 71, and which can be freely moved inside the building by an operator. In the work floor 73, when the upper surface of the work floor 73, that is, the floor surface is to be raised, the work table 70 having the same structure as the work table 70 to which the support columns 71 are attached is attached to the work table 70.
By stacking them on the work floor 73, the work floor 73 is raised.

[0003]

The above-mentioned conventional work floor 73
In the above, the floor of the working floor 73 is raised by stacking the framed working table 70 on the working table 70, so that the height of the floor of the working floor 73 is It can only be roughly changed, and the height of the floor of the work floor 73 cannot be changed relatively finely according to various ceiling heights and the like (height of the work target portion). The workbench 70 with a low degree of freedom and at a high position
There is a problem that the mounting work is inefficient.

[0004] In the prior art, as shown in FIG. 28, a large number of columns 71 are arranged in a horizontal direction, the interval between the columns 71 is small, and there are obstacles on the floor surface in the building. In such a case, it is difficult to move over the obstacle, and it is not possible to move without removing the obstacle, which is inconvenient.
There was also an inconvenience that the floor inside the building could not be used as a storage room. In addition, since the small-diameter wheels 72 are used, it is difficult to move if there is a groove or a protrusion on the floor of the building.

An object of the present invention is to provide a work floor which solves the above-mentioned problems.

[0006]

The technical solution taken by the present invention to solve the technical problem comprises at least four columns 2 arranged at the vertices of a square,
Each support 2 is composed of one or a plurality of support components 2A, and includes a movable body 26 fitted to each support 2 so as to be vertically movable, and for fixing the movable body 26 to the support 2. The pin insertion hole 8 through which the pin 9 is inserted is
A is formed in A at appropriate intervals in the length direction,
A floor frame 24 is formed by connecting six members together by a beam 27, a floor 25 is formed on the floor frame 24, and an elevating means 46 for raising and lowering the floor frame 24 with respect to the column 2 is provided. I do.

Further, another technical means includes at least four columns 2 arranged so as to be located at the vertices of a quadrangle, and each column 2 is composed of one or a plurality of columns 2A. A large-diameter wheel 4 is provided at the lower end of each of the columns 2 so as to be movable, and a movable body 26 is vertically movably fitted to each of the columns 2. The floor frame 24 is formed by forming a large number of pin insertion holes 8 through which pins 9 for fixing are inserted into the support structure 2A at appropriate intervals in the length direction, and connecting the moving bodies 26 with each other by beams 27. A floor 25 is provided on the floor frame 24,
It is characterized by comprising a lifting means 46 for raising and lowering the floor frame 24 with respect to the column 2.

Further, another technical means comprises at least four columns 2 arranged at the front, rear, left and right vertices of a square, and each column 2 has a plurality of columns 2A having different lengths. And a movable body 26 fitted to each column 2 so as to be movable up and down, with a wheel 4 provided at the lower end of each column 2 so as to be movable.
A pin 9 for fixing the moving body 26 to the support 2
A large number of pin insertion holes 8 are formed in the support structure 2A at appropriate intervals in the length direction, and the moving bodies 26 adjacent to each other in the front, rear, left and right are connected by the beam 27 to thereby form the floor frame 2.
4, a floor 25 is provided on the floor frame 24, and a lifting means 46 for raising and lowering each moving body 26 with respect to the column 2 is provided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 to FIG.
The work floor 1 is used when performing a work such as constructing a work target portion at a high place such as a ceiling portion inside a building (in a room). This is a movable work floor which can be freely moved in the front, rear, left and right and oblique directions. 1 and 2, the work floor 1
The main structure is provided with at least four columns 2, a worktable 3 attached to these columns 2, and wheels 4 provided at the lower end of each column 2.

The support 2 includes one or a plurality of support structures 2.
A, and are arranged so as to be located at the front, rear, left and right vertices of a square (rectangle) when viewed from above and below (to exhibit a square when viewed from above and below). As shown in FIG. 3 and FIG. 4, the support structure 2 </ b> A is formed by vertically connecting four main members 5, which are made of a pipe material or the like, at an interval in front, rear, left and right directions, and in a vertical direction. It is arranged so as to be located at the vertex of the quadrilateral when viewed (in such a manner as to present a quadrangle when viewed from the up-down direction), and the main members 5 adjacent to each other in the front, rear, left and right are mutually connected by a connecting member 6 made of a pipe material or the like. ing.

A large number of connecting members 6 are arranged at appropriate intervals from the upper end to the lower end between the main members 5. Plates 7 extending in the vertical direction are provided on the front and rear surfaces of the support structure 2A.
Are arranged on the outer surface side of the connecting member 6 and are fixed to the connecting member 6 by welding or the like. The plate 7 is formed with a large number of pin insertion holes 8 located between the connecting members 6 in a vertical direction at a predetermined pitch. Also, the front and rear plates 7
Are formed at corresponding positions in the up-down direction, and the pins 9 can be inserted into the pin insertion holes 8 of the front and rear plates 7 (see FIG. 11).

As shown in FIG. 6, a nut 10 is fixed to the upper end of each main member 5 of the column structure 2A, and the lower end of each main member 5 has a distal end projecting downward. The bolt holder 12 into which the bolt 11 is inserted so as to be rotatable around the axis is fixed by welding or the like. As shown in FIG. 7, a keyway 13 in the axial direction is formed on the outer peripheral surface side of the bolt 11 from the tip.
In 1, a rotating body 15 having a protrusion 14 fitted into the key groove 13 is externally fitted to the shaft of the bolt 11 from the tip side.

By rotating the bolt 11 around the axis by the rotating body 15 and screwing the bolt 11 into the screw hole of the nut 10, the support members 2A can be connected to each other in the longitudinal direction. Have been. This support structure 2A
Are several types having different lengths (for example, length L = 100
0 mm, 1400 mm, and 2000 mm) are prepared and appropriately combined (separately used) according to the height of the work target portion, so that the total length of the column 2 can be changed and adjusted.

Here, regarding the dimensions of the support structure 2A,
To exemplify a typical example, the main material 5 has an outer diameter of 42.7 m.
A pipe member having a thickness of 2.3 mm and a thickness of 2.3 mm is used, the distance between the centers of the front, rear, left and right main members 5 is 143.3 mm, and the length L of the support structure 2A is 2000 mm. The members 6 are arranged at a pitch of 200 mm between the second connecting member 6 from the uppermost end and the second connecting member 6 from the lowermost end,
The uppermost and lowermost connecting members 6 have a distance of 150 mm from the second connecting member 6 and are provided at a position 50 mm from the end of the support structure 2A. The pin insertion hole 8 has a hole with an inner diameter of 40 mm of 200 mm. It is formed with a pitch.

The wheel 4 has a large diameter (for example, 800 m in diameter).
m) is adopted, and when moving, it is considered so as to be able to move satisfactorily even if there is a groove or the like on the floor 16 in the building. The wheel 4 is mounted on a wheel holder 17 mounted on the lower end of the column 2. As shown in FIG. 5, the wheel holder 17 has a thrust bearing 18, and a nut structure 19 having the same configuration as the nut structure including the upper end of the main member 5 and the nut 10 is provided on the upper surface of the thrust bearing 18. Is provided, and the nut structure 19 is provided.
By screwing the bolt 11 on the lower end side of the main member 5 via the rotating body 15 (with the same structure as the responsive increase shown in FIG. 7),
A wheel holder 17 is attached and fixed to the lower end of the column 2.

A support bracket 20 is fixed to the lower surface of the thrust bearing 18, and the wheel 4 is attached to a lower portion of the support bracket 20 via a bearing 21 and a support shaft 22 so as to be rotatable about a horizontal axis. I have. Therefore, the wheel 4 is rotatable around the vertical axis by the thrust bearing 18. The work table 3 includes a floor frame 24,
And a floor 25 and the like. As shown in FIGS. 8 to 10, the floor frame 24 includes a moving body 26 fitted to each column 2 so as to be vertically movable, a connecting beam 27 connecting the moving bodies 26 adjacent to each other in front, rear, left and right. An extension beam 28 connected to the moving body 26 is provided.

The main body of the moving body 26 is formed in a square cylindrical shape (for example, formed of a square body having a thickness of 4.5 mm and a square of 200 mm), and as shown in FIG. The movable body 26 is configured so that the pin 9 inserted into the pin insertion hole 8 of the support 2 penetrates the movable body 26 so that the vertical movement of the movable body 26 with respect to the support 2 is restricted. I have. The pin insertion hole 31 formed in the moving body 26 for inserting the pin 9 is a long hole in the vertical direction, and is formed as a pair of upper and lower walls on the front and rear walls of the upper part of the moving body 26.

Vertical ribs 32 and horizontal ribs 33 arranged in a cross shape are provided below the pin insertion holes 31 on the left and right side surfaces and the inner surface in the front-rear direction of each moving body 26, respectively. The joining flange 34 is fixed to the ribs 32 and 33 vertically. In addition, each moving body 26
The upper vertical ribs 32 on both the left and right sides are extended upward, and a suspension hole 35 for hooking a hook is formed in this extended portion. As shown in FIG. 10, the connecting beam 27 and the extension beam 28 are composed of an upper chord material 36, a lower chord material 37, and a vertical material 38 and a diagonal material 3 connecting the upper chord material 36 and the lower chord material 37.
9.

The upper chord 36 and the lower chord 3 of the connecting beam 27
7, a joining flange 40 is fixed to one end of the upper chord member 36 and one of the lower chord member 37 of the extension beam 28. The connection beam 27 is disposed between the moving bodies 26 adjacent to each other in the front, rear, left and right directions.
The upper and lower joining flanges 40 are brought into contact with the upper and lower joining flanges 34 of the moving body 26, and the two joining flanges 40 and 34 are fixed to each other by bolts and nuts, so that the moving bodies 26 are connected to each other. I have.

The extension beam 28 is disposed on the outer side in the left-right direction of the moving body, and the upper and lower joining flanges 40 of the extension beam 28 are brought into contact with the upper and lower joining flanges 34 of the moving body 26 by bolts and nuts. Double joint flange 40, 3
The extension beams 28 are connected to the moving body 26 by fixing the members 4 to each other. On the floor 25, a joist 29 in the front-rear direction is arranged on the floor frame 24 at intervals in the left-right direction. On the joist 29, a floor material 30 made of a plate material such as wooden, resin, or metal is provided. It is composed of many sheets.

The joist 29 is fixed to the beam 27 by a clamp member, and the floor member 30 is fixed to the joist 29 by a clamp member. In addition, the work floor 1 of the present embodiment
Then, the working table 3 has, for example, a length of 5000 m in the front-rear direction.
m to 6000mm, left and right width is 10,000mm to 1
It is formed in the size of 2000mm, and the height of the floor is 5000
mm, but is not limited to this. At least four corners of the work table 3 are provided with support columns 41.
However, a handrail 42 is provided between the supporting columns 41 adjacent to each other in the front, rear, left and right directions.

The columns 2 and the columns 2 and the floor frame 24 are connected by a pipe 43. Elevating means 46 for raising and lowering the work table 3 with respect to the support column 2 are provided on the work floor 1.
Is provided. As shown in FIGS. 12 and 13, the lifting means 46 includes a suspension frame 47 mounted on the upper end side of the support structure 2A and fixed by bolts, a lever block 48 (lifting machine), and a lever block 48. A hook 50 attached to the end of the chain 49 and hooked on the hanging frame 47, a hook 51 attached to the lever block 48 and hooked on the hanging hole 35 of the moving body 26, etc., and the chain is wound up by the lever. hand,
The working table 3 can be raised (or lowered) by raising (or lowering) the movable body 26.

Although the hand-operated lever block 48 has been exemplified as the hoist, the chain may be wound by an electric motor or a hydraulic motor, or may be constituted by a winch or a hoist. In order to assemble the work floor 1 having the above configuration, first, the moving bodies 26 are arranged so as to be located at the vertices of a square on a floor surface or the like in a building, and the moving bodies 26 are connected with each other by the connecting beam 27. The extension beam 28 is connected to the moving body 26 to assemble the floor frame 24.

Next, a joist 29 is fixed on the floor frame 24, and a floor plate 30 is stretched on the joist 29 to form a floor 25.
The support pillar 41 and the handrail 42 are attached. Next, one support | pillar structure 2A is inserted into each moving body 26 from above, and stands upright on the floor in a building. Next, the suspension frame 4 of the lifting means 46
7 is attached to the upper end of each support structure 2A, and the hook 51 of the lever block 48 is connected to the suspension hole 35 of the moving body 26.
And hook 50 at the end of chain 49.
Is hooked on the hanging frame 47.

Next, the work table 3 is raised with respect to the support structure 2A by winding up the chain 49. The method of raising the work table 3 differs slightly depending on the number of workers. When there are four workers, the work table 3 can be raised in parallel by winding up the chains 49 of the four lever blocks 48. However, when two people are working, the work table 3 is raised one by one. Let it. That is, as shown in FIG. 14, first, one side of the worktable 3 is raised to a predetermined height, and the pin 9 is inserted into the pin insertion hole 31 of the moving body 26 and the pin insertion hole 8 of the support structure 2A on the raised side. And fixed to the support structure 2A.

Next, the other side of the work table 3 is raised to a predetermined height, and the pin insertion hole 31 of the movable body 26 on this raised side is raised.
Then, the pin 9 is inserted into the pin insertion hole 8 of the support structure 2A and fixed to the support structure 2A. By repeating this, the work table 3 is raised to the upper end side of the column structure 2A. In addition, the wheels 4 are attached to the lower ends of the respective support structures 2A while the work table 3 is raised to the upper end side of the support structure 2A. The mounting of the wheels 4 is usually performed one by one, and as shown in FIG. 15, when the work table 3 is raised by a predetermined distance, the temporary columns 44 are provided in the vicinity of the column structure 2A where the wheels 4 are to be mounted. And the temporary column 44 is attached to the floor frame 2
4 and then move the support structure 2A upward, dispose the wheel 4 on the wheel holder 17 below the support structure 2A, and attach the wheel holder 17 to the lower end of the support structure 2A. .

The temporary column 44 is removed after the wheel 4 is attached. In this manner, the wheel 4 is attached to the other support structure 2A. When the work table 3 is raised to the upper end side of the column structure 2A, the suspension frame 47 is removed, and another column structure 2A is connected to the column structure 2A to which the wheels 4 are attached. At this time, the column structures 2A having the same length or other lengths are selectively connected according to the height of the ceiling.

When the support structure 2A is connected, the work table 3 is raised in the same manner as described above, and the work table 3 is fixed at a desired height by the pins 9. In the above configuration, the assembling work of the floor frame 24 and the forming work of the floor 25 can be performed on the floor surface in the building, and the assembling efficiency is good. The moving body 26
Since a large number of pin insertion holes 8 for inserting pins 9 for fixing the support member 2 to the column 2 are formed in the column structure 2A at appropriate intervals in the length direction, the work object such as the ceiling inside the building can be used. The height of the floor 25 of the work floor 1 can be set relatively freely according to the height of the part, and the degree of freedom in setting the height of the floor 25 of the work floor 1 according to the height of the work target is high. It is.

Further, in addition to this, by forming the support column 2 by combining a plurality of types of support structure members 2A having different lengths, the work floor according to the height of the work target portion such as the ceiling in the building can be obtained. The degree of freedom in setting the surface height is further increased. In addition, the distance between the columns 2 is wide, and the floor under the floor 25 of the work floor 1 can be used as a storage space on the floor in the building, which is convenient and
Even if there is an obstacle 45 on the floor in the building, it can be moved across the obstacle, which is convenient. The work floor 1 is dismantled by the reverse operation.

FIGS. 16 to 24 show a second embodiment, and the work floor 1 in this embodiment is similar to that of FIG.
As shown in FIG. 2, a work table 3 (having a dimension of 18000 mm in the front-rear direction and 18000 mm in the left-right direction) corresponding to substantially the entire floor 53 of a building such as a gymnasium is constructed. The work floor 1 is provided with no wheels at the lower end thereof and cannot move. This second
In the work floor 1 according to the embodiment, in addition to the four columns 2 arranged in front, rear, left and right so as to be located at the apex of the square, two columns 2 are arranged between the front and rear columns 2 on the same side. A total of eight columns 2 are provided.

The support structure 2A is substantially the same as that of the first embodiment, except that the plate 7 having the pin insertion holes 8 is provided on both left and right sides,
Are inserted in the left-right direction. The main members 5 of the support structure 2A are also connected to each other by diagonal members 52.
Further, in this embodiment, plates 23 are fixed to the ends of the main members 5 of the support members 2A, respectively, and the support members 2A are connected by connecting the plates 23 with bolts and nuts. It is configured to:

The connection may be made by the same connection structure as in the first embodiment. Moving body 26
Is composed by framing pipe materials and mold steel, etc.
As shown in FIGS. 17 to 19, each of the vertical members 54 is formed of an angle or the like, and has four front, rear, left, and right vertical members 54 arranged so as to be located at the vertices of a square when viewed from the vertical direction. The main body 5 of the support structure 2A is externally fitted to the support structure 2A so as to be vertically movable such that the main material 5 of the support structure 2A is located inside the support structure 2A.

The vertical members 54 adjacent to each other in the horizontal direction are connected by horizontal members 55 in the horizontal direction, each of which is made of a pipe material or the like. The cross members 55 are arranged in a pair at the top and bottom,
The joining flange 34 is fixed to an end of each cross member 55. The upper and lower cross members 55 are connected by a reinforcing member 57 made of a pipe material or the like. The vertical members 54 adjacent to each other in the front-rear direction are connected by a horizontal member 56 made of an angle or the like.

The horizontal members 56 are arranged between the horizontal members 55, and a pair of upper and lower members are provided to connect the front and rear horizontal members 55 together. The lower portions of the vertical members 54 adjacent to each other in the left-right direction are connected by a reinforcing member 58 made of an angle or the like. An L-shaped plate 59 having a hole 60 is fixed to the lower end of each vertical member 54. Further, a plate 61 is provided in each of the upper left and right horizontal members 56, and the pin 9 is inserted through the plate 61 to form a pin insertion hole 31 that regulates the vertical movement of the moving body 26 with respect to the column 2. .

This plate 61 is connected to the vertical member 54 by a reinforcing member 62. As shown in FIG. 21 and FIG. 22, the connection beam 27 and the extension beam 28 are provided with a pair of upper chord members 36 and lower chord members 37, respectively.
A joining flange 40 connected to the joining flange 34 of the moving body 26 is fixed to each end of each of the upper chord material 36 and the lower chord material 37 so as to have a quadrangular shape. Other configurations are substantially the same as those of the first embodiment. Even in the second embodiment, the work floor 1 is assembled in substantially the same manner as in the first embodiment.

That is, the moving body 26 is placed on the floor 16 of the building.
Are arranged, and the left and right moving bodies 26 at the same position in the front-back direction (the moving bodies 26 adjacent in the left-right direction) are connected by the connection beam 27. In this case, the moving bodies 26 adjacent in the front-rear direction are not connected by the connecting beam 27. Then, on the connecting beam 27, the joists 29 in the front-rear direction are arranged at appropriate intervals in the left-right direction, and are fixed to the connecting beams 27 and the extension beams 28. Attach 41 and handrail 42.

Next, the strut structure 2A is inserted into each moving body 26, and the elevating means 46 is provided between the upper end of each strut structure 2A and the moving body 26.
6, the work table 3 is raised in parallel, and when the work table 3 is raised by a predetermined distance, the pins 9 are inserted into the pin insertion holes 8 and 31, and the work table 3 is fixed to the support structure 2A, and then moved up and down. The procedure of removing the means 46, connecting the support members 2A, providing between the upper end of each connected support member 2A and the moving body 26, removing the pin 9 and raising the work table 3 is repeated. To set the floor height to a desired height.

In the second embodiment, for example, FIG.
As shown in FIG. 4, from the state where the work table 3 is assembled on the floor 16 of the building, the work table 3 is raised by about 1.5 M for the first time, and
The work table 3 is raised by about 2.2M from the fourth time to the fourth time. FIG. 25 and FIG. 26 show another connection structure between the support structures 2A. In this connection structure, one plate 63 to which the four main members 5 are fixed by welding or the like is provided at the end of the column structure 2A.
3, bolt insertion holes 64 between adjacent main members 5 in front, rear, left and right.
Are formed, and the plates 63 are connected and fixed by bolts and nuts, thereby connecting the columns 2A.

With this structure, since the support members 2A are strongly connected to each other, the structure is adopted when the floor surface of the work floor 1 is raised (when the support column 2 is lengthened).

[0040]

According to the present invention, the work floor includes at least four struts arranged at the apexes of the quadrilateral, and each strut comprises one or a plurality of strut structures. A movable body is vertically fitted to each of the supports, and a pin insertion hole for inserting a pin for fixing the movable body to the support is provided in the support structure at appropriate intervals in the length direction. Since a large number is formed and the moving bodies are connected to each other by a beam to form a floor frame, a floor is provided on this floor frame, and the floor frame is provided with elevating means for lifting and lowering with respect to the column, On the floor in the building, the beam is connected to the moving body to assemble the floor frame and form a floor on the floor frame. Can be constructed, floor frame assembling work and floor forming work There can be performed on the floor in the building, good assembly efficiency.

Further, a large number of pin insertion holes for inserting a pin for fixing the movable body to the column are formed in the column structure at appropriate intervals in the length direction, and the pin insertion for inserting the pin is formed. By selecting the holes and, in addition, by changing the length of the columns by connecting multiple columns, the comparison can be made according to the height of the work target such as the ceiling inside the building. The floor height of the work floor can be set freely, and the degree of freedom in setting the floor height of the work floor according to the height of the work target portion is high. In addition, by adopting a long beam length, a work floor having a large space between the columns can be formed, whereby the work floor can be used conveniently as a storage space below the floor of the work floor on the floor in the building.

In addition to this, a large-diameter wheel is provided at the lower end of each column to make it movable, so that a work floor with a large space between the columns allows obstacles on the floor in the building. It is convenient and can be moved smoothly by the large-diameter wheels. In addition, by constructing the struts by combining a plurality of types of strut structures having different lengths, the degree of freedom in setting the work floor height according to the height of the work target such as the ceiling in the building is increased. It has the effect of increasing further.

[Brief description of the drawings]

FIG. 1 is a front view of a work floor according to a first embodiment.

FIG. 2 is a side view of the work floor according to the first embodiment.

FIG. 3A is a front view of a column structure according to the first embodiment, and FIG. 3B is a side view of the column structure according to the first embodiment.

FIG. 4 is a plan view of a column structure according to the first embodiment.

FIG. 5 is a front view of the wheel according to the first embodiment.

FIG. 6 is a cross-sectional view of a connecting portion of the strut members according to the first embodiment and a connecting portion of the wheel and the strut member.

FIG. 7 is a sectional view taken along line AA of FIG. 6;

FIG. 8 is a plan view of a work table according to the first embodiment.

FIG. 9 is an enlarged view of a portion B in FIG. 8;

FIG. 10 is a sectional view taken along the line CC of FIG. 9;

FIG. 11 is a plan cross-sectional view of a connection portion between the support structure and the moving body according to the first embodiment.

FIG. 12 is a front view showing a state where the work floor according to the first embodiment is assembled on a floor inside a building.

FIG. 13 is a side view showing a state where the work floor according to the first embodiment is assembled on a floor inside a building.

FIG. 14 is a front view showing an operation state when the work table is raised.

FIG. 15 is a front view of a work floor when wheels are mounted.

FIG. 16 is a side view of a column structure according to the second embodiment.

FIG. 17 is a plan view of a connecting portion between a support structure and a moving body according to a second embodiment.

FIG. 18 is a side view of the moving body according to the second embodiment.

FIG. 19 is a front view of a moving object according to the second embodiment.

FIG. 20 is a sectional view taken along the line DD in FIG. 19;

FIG. 21 is a front view of a beam.

FIG. 22 is a side view of the beam.

FIG. 23 is a plan view of a work floor according to the second embodiment.

FIG. 24 is a front view showing a procedure for elevating the workbench according to the second embodiment.

FIG. 25 is a front view showing the connection structure of the support members.

FIG. 26 is a view taken along line EE of FIG. 25;

FIG. 27 is a side view showing a conventional work floor.

FIG. 28 is a front view showing a conventional work floor.

[Explanation of symbols]

 2 support 2A support structure 8 pin insertion hole 9 pin 24 floor frame 25 floor 26 moving body 27 beam 46 elevating means

Claims (3)

[Claims] 1. At least four struts (2) arranged so as to be located at the vertices of a quadrangle, each strut (2) being composed of one or more strut structures (2A), Moving body (26) fitted to support (2) so as to be vertically movable
And a pin insertion hole (8) through which a pin (9) for fixing the moving body (26) to the support (2) is inserted into the support (2A) at appropriate intervals in the length direction. The moving body (26) and the beam (27)
A floor frame (24) is formed by connecting the floor frame (24), a floor (25) is formed on the floor frame (24), and a lifting means (46) for raising and lowering the floor frame (24) with respect to the support (2). A work floor comprising: 2. At least four struts (2) arranged so as to be located at the vertices of a quadrangle, each strut (2) being composed of one or more strut structures (2A), A large-diameter wheel (4) is provided at the lower end of the column (2) so as to be movable, and a movable body (26) is vertically movably fitted to each column (2). A large number of pin insertion holes (8) for inserting pins (9) for fixing the (26) to the support (2) are formed in the support structure (2A) at appropriate intervals in the length direction, and are moved. A floor frame (24) is formed by connecting the bodies (26) with each other by a beam (27), a floor (25) is provided on the floor frame (24), and the floor frame (24) is connected to the support (2). Lifting means (4
6) A work floor comprising: 3. At least four struts (2) arranged at the front, rear, left and right vertices of a quadrangle, each strut (2) having a plurality of strut structures (2A) having different lengths. A movable body (26) fitted to each column (2) so as to be movable up and down is provided, while being provided with wheels (4) at the lower end of each column (2). A plurality of pin insertion holes (8) for inserting pins (9) for fixing the movable body 26 to the support (2) are formed in the support structure (2A) at appropriate intervals in the length direction. , The moving body (26) adjacent to the front, back, left and right beams (27)
A floor frame (24) is formed by being connected by means of the floor frame (24), a floor (25) is provided on the floor frame (24), and an elevating means (46) for raising and lowering each moving body (26) with respect to the column (2) A work floor comprising: