JPH09286598A - Stage for high level work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stage for a high level working site in which a worker can enter a space among the beams of a ceiling without removing a hand rail, safely and without any excessive operation. SOLUTION: X-directional frames 7, 8 arranged in an X direction and Y- directional frames 31, 32 arranged in a Y-direction are fixed above a floor member 2 for a working location installed above a proper lifting or descending mechanism. Both sides of a fence 11 provided with a step plate 14 are supported by rollers 23 rotationally moved within the X-directional frames 7, 8. With such an arrangement as above, the fence 11 can move in an X-Y direction. As a dropping pedal 15d of a stopper 15 arranged at the lower part of the fence 11 is depressed with feet, the abutting member 15h abuts against the floor surface of the floor member 2 for the working operation and the fence 11 does not move in the X-Y direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work stage used when working in high places.

[0002]

2. Description of the Related Art Conventionally, when performing work on a ceiling part, a work stage which is vertically moved by an appropriate elevating mechanism is sometimes used. This work stage is obliged to provide a handrail around it in order to prevent workers from falling, and according to the Occupational Safety and Health Regulations, the handrail must have a height of 75 cm or more (however, 90 cm or more is required for actual instruction). Therefore, the conventional stage for working in high places has a structure in which a handrail having a height of 90 cm or more is simply erected on the floor surface of the work floor body provided on the elevating mechanism.

[0003]

By the way, when working on the ceiling, it may be necessary to work not only on the ceiling surface but also on the ceiling surface. Need to enter the space.

In that case, the conventional work stage is
For example, even if it is raised by the elevation mechanism of an aerial work vehicle and brought closer to the inspection port, the upper end of the handrail comes into contact with the ceiling surface, so the floor surface of the work floor body is eventually 90 cm from the ceiling surface. You will only be able to get to the lowered position. In other words, it is necessary for the worker to enter the inspection port at a height of 90 cm or more from the floor.

As described above, in the conventional stage for working at a high place, since the handrail is simply erected on the floor surface of the working floor body, the inspection door located at a high position where the worker is placed above the ceiling above the ceiling. There is no scaffold for entering the space. Therefore, if it is left as it is, an appropriate platform will be placed on the floor surface of the work floor, or a handrail will be put on the legs to ascend, but these are both dangerous and are prohibited by regulations.

Therefore, conventionally, only the upper part of the body is put in the inspection port with the floor for work close to the ceiling, the rope of the safety belt being worn is tied to an appropriate member on the back of the ceiling, and then once. The procedure was to lower the work floor, remove the handrail, and then gradually raise the work floor again to a height at which the worker could enter the ceiling.

However, this series of operations cannot be performed by one person, and is extremely inefficient. Moreover, the work of tying the rope of the safety belt to the member on the back of the ceiling is troublesome, and there are cases where the body is forced into an unreasonable posture, and the ceiling board is often damaged.

The present invention has been made in view of the above problems, and provides a stage for working in high places where a worker can safely and comfortably enter an above-ceiling space without removing a handrail. The purpose is to solve the problem.

[0009]

In order to achieve the above object, according to claim 1, a working floor body attached to an appropriate lifting mechanism and an X-Y direction in the horizontal direction on the working floor body. And a fence that can move freely, the fence having an outer shape that can enter the inspection port of the ceiling,
It is provided with a handrail and a step material, and further, the fence is
A stage for working in high places is provided, which is provided with a stopper that blocks the horizontal movement.

According to a second aspect of the present invention, there is provided a work floor attached to an appropriate lifting mechanism, a fence having an outer shape that can enter the inspection port of the ceiling, and a handrail and a step member. A pair of parallel X-direction frames fixed in the X-direction on the floor, and a pair of parallel Y-direction frames provided with rollers movable along the X-direction frame and passed in the Y-direction, Further, the fence is provided with a stopper that is supported by a roller that is movable along the Y-direction frame and that is in contact with the floor surface of the work floor body. Will be provided.

If the step member in each of these aerial work stages is constructed so as to be movable to the outside of the fence as described in claim 3, a further preferable effect can be obtained.

The fence referred to in the high-altitude work stage of claims 1 to 3 means, for example, a safety fence in which the circumference of the worker is surrounded by a fence. The upper end of this fence may be used as a handrail. The plane shape of the fence itself may be circular or rectangular. Further, since this fence has an outer shape that can freely enter the inspection port on the ceiling, the fence can directly enter the inspection port even when the working floor is raised. Further, since the fence is provided with a step material such as a step board, a worker in the fence can easily climb into the ceiling by climbing on the step material.

By the way, the working floor is mounted on an elevation mechanism or a lifter provided on a movable carriage, and is moved up and down. When viewed from below, the fence is positioned just below the intended inspection port. As such, it is practically difficult to move and stop the dolly. In this respect, according to the present invention, in the case of claim 1, the fence is movable in the XY direction in the horizontal direction on the work floor, and further, the stopper can prevent the horizontal movement.
A worker inside the fence can position the fence on the work floor. That is, it can be finely adjusted.

According to the second aspect of the present invention, the fence is supported by rollers movable along the Y-direction frame, and the Y-direction frame is X-shaped.
Since the roller which is movable along the direction frame is provided, the X-direction frame and the Y-direction frame function as rails so to speak, and this fence is movable in the XY direction in the horizontal direction on the floor for work. . Moreover, the movement is smooth because it can be moved by rollers. Since the stopper can be brought into contact with the floor surface of the work floor, frictional resistance prevents the fence from moving in the horizontal direction. In this case, if a structure is adopted in which the stopper is dropped on the floor surface and brought into contact with it, when the worker steps on the step material,
The frictional resistance is further increased by the load at that time and becomes more stable. Further, the stopper itself also functions as a fence supporting member, so that the load on the rollers supporting the fence and each frame is reduced.

According to a third aspect of the present invention, if the step material is configured to be movable to the outside of the fence, when the worker inside the fence positions the fence, the step material is taken out of the fence. By placing it, the step material does not get in the way and positioning work and the like are easy.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The embodiments of the present invention will be described below. FIG. 1 shows an appearance of a stage 1 for working at high places according to the present embodiment, FIG. 2 is a plan view, and FIG. 3 is a front view. In this aerial work stage 1, columns 3, 4, 5 and 6 are erected at both ends of a pair of short sides of a floor 2 having a rectangular plane, and the columns 3 and 6 are arranged between the upper ends thereof. , And the X-direction frames 7 and 8 are installed in parallel between the upper ends of the columns 4 and 5, respectively. In addition, X-direction frames 7 and 8 respectively
Reinforcing materials 9 and 10 are fixed between both ends of the.

The X-direction frames 7 and 8 have the same shape and the same size. For example, when the X-direction frame 7 is described with reference to FIG. 4, an opening 7a is formed on the lower surface of the X-direction frame 7 along the longitudinal direction. Further, on both sides of the opening 7a, the protruding portions 7b, 7b which are bent vertically inward are formed.
c is formed, and the recesses between the protruding portions 7b and 7c and the side surfaces 7d and 7e of the X-direction frame 7 form rail grooves 7f and 7g.

As shown in FIGS. 1 and 2, the fence 11 is made of a flat C-shaped pipe material or a straight vertical pipe material, and is entirely cage-shaped with a part of its side surface opened. It has a planar C shape. Further, the outer diameter of the fence 11 is large enough to enter the ceiling inspection port, and is large enough for a person to enter the fence 11. A worker can enter and exit the fence 11 through the opening on the side surface. As a safety measure, if a chain or the like can be freely passed around the opening, the safety is further improved. The flat C-shaped pipe material 11a at the upper end of the fence 11 constitutes a handrail.

On the fence 11, as shown in FIG.
A bearing 12 is vertically fixed to one of the vertical pipe members forming the fence 11, and each of the bearings 12 is provided with a rotary shaft 13 that is rotatable with respect to the bearing 12. Therefore, the rotating shaft 13 is supported by the fence 11. On the outer periphery of the rotary shaft 13, step plates 14 serving as step members are fixed in a total of three places in the vertical direction at appropriate intervals.

A stopper 15 is provided below the rotary shaft 13. The stopper 15 has the configuration shown in FIG. 6, and includes a cylindrical main body 15a provided on the lower end surface of the rotary shaft 13, a piston member 15b slidable in the main body 15a, and the piston member 15b. A coil spring 15c that always tries to pull upward, and a substantially V that is rotatably supported by the piston member 15b by its rotatably supporting portion P.
It is passed between the drop pedal 15d of the mold, the tip of the drop pedal 15d (the left end in FIG. 6) and the flange of the main body 15a, and both ends thereof are pivotally supported by the pivotal support portions Q and R, respectively. The link pedal 15e and the drop pedal 15d share two shaft support parts P and Q, and the shaft support part P of the piston member 15b is located in the elongated hole 15f.
g, a contact member 15h provided on the lower end surface of the piston member 15b. Furthermore, drop pedal 1
An engaging portion 15i is formed at the tip of 5d, and the abutting member 15
On the lower surface of h, a rubber material or the like having a high friction coefficient is provided.

According to the stopper 15 having such a structure, in the normal state, that is, in the unlocked state, the coil spring 15 is provided.
The contraction of c causes the piston member 15b to be pulled up, and as shown in FIGS.
Is separated from the work floor 2.

When the drop pedal 15d is depressed against the contraction of the coil spring 15c, the shaft support portion Q is moved to the main body 15a.
And the contact member 15h comes into contact with the working floor body 2,
When stepped on further strongly, the link member 15 with the shaft support P as a fulcrum.
e moves toward the main body 15a side and extends, and a lifting force acts on the shaft support R. When the shaft support portion Q comes closer to the main body 15a side than the line connecting the shaft support portions P and R, the locking portion 15i serves as a stopper, and the shaft support portion Q does not move any further. That is, even when the foot is released from the drop pedal 15d, the state of FIG. 7 is maintained by the load of the rotating shaft 13 and the like. That is, the stopper 15 is locked.

On the other hand, when releasing this locked state,
By stepping on the lifting pedal 15g, the tip end that is ahead of the shaft support Q first comes into contact with the main body 15a, and by further stepping on the lifting pedal 15g, due to the existence of the long hole 15f, this tip end becomes a fulcrum. And then the lift pedal 15
d rotates clockwise, the shaft support Q is pushed outward,
As a result, the locking by the locking portion 15i is released.
After that, the piston member 15b is pulled up by the contraction of the coil spring 15c and returns to the state of FIG.

With the above structure, the footboard 14 and the stopper 15 can be moved to the outside of the fence 11 as shown in FIGS.
d, every time the lifting pedal 15g is depressed, the contact member 1
5h comes into contact with the working floor 2 to lock it,
It is possible to release this locked state. The setting position of the rotary shaft 13 may be a vertical pipe material located at the end of the opening of the fence 11 (the opening in the substantially planar C-shaped fence 11). In such a case, the rotating shaft itself can be retracted to the outside of the fence 11.

As shown in FIGS. 3 and 8, support fittings 21 are provided at a total of four places on both sides of the fence 11 having the above-mentioned structure, and the upper surfaces of the support fittings 21 respectively support rollers. The member 22 is fixed. The upper portion of each roller support member 22 passes through the openings 31a of the Y-direction frames 31 and 32 and is rotatably movable in the rail grooves 31f and 31g in the Y-direction frames 31 and 32.
Two 3 are rotatably provided (for convenience of description, in FIG. 8, the opening 31 of the Y-direction frame 31 is shown.
Although only a and the rail grooves 31f and 31g are shown, the Y-direction frame 32 has a similar configuration).

The Y-direction frames 31 and 32 have the same shape and the same size, respectively, and have the same structure as the above-mentioned X-direction frames 7 and 8 except for the length. The Y-direction frames 31 and 32 are arranged in parallel, and the length thereof is the same as the short side of the work floor 2, and the upper surfaces of both ends thereof are shown in FIG. As shown, a roller support member 33 having the same structure as the roller support member 22 is fixed. The upper portion of the roller support member 33 passes through the openings 7a, 8a (opening 8a is not shown) on the lower surface of the X-direction frames 7, 8 and is rotatable in the front rail grooves 7f, 7g. The roller 34 is the roller support member 33.
It is rotatably provided on the upper part of.

Therefore, the fence 11 is supported by the rollers 23 located in the Y-direction frames 31, 32, and the fences 11 are supported in the longitudinal direction of the Y-direction frames 31, 32, that is, Y.
It is movable in any direction. Also, the Y-direction frames 31, 32
The roller 34 itself is located in the X-direction frames 7 and 8.
Is supported by and is movable in the longitudinal direction of the X-direction frames 7 and 8, that is, in the X-direction.

Stage 1 for working in high places according to this embodiment
Has the above-mentioned configuration, and is, for example, as shown in FIG. 9, a movable carriage 42 equipped with a lifter 41 which is a lifting mechanism.
It is installed on the lifter 41 and used.

The procedure for a worker to enter a space S above the ceiling board 43 into the space S above the ceiling to perform a predetermined work will be described. Then, the attached outrigger 45 is set and the moving carriage 42 is fixed.

Then, the worker gets into the fence 11 of the aerial work stage 1 and operates a controller (not shown) for moving the lifter 41 up and down to raise the aerial work stage 1. When approaching the ceiling board 43 to an appropriate distance, the lifter 41 is stopped from rising, and the lift pedal 15g of the stopper 15 is depressed to contact the contact member 15
The h is separated from the floor surface of the work floor 2. In this state, the fence 11 is movable on the work floor 2 in the XY directions. Moreover, the step 14 and the stopper 15 are also the fence 11.
Can be moved outside. Therefore, the work of positioning the fence 11 directly under the inspection port 44 is easy.

After finely adjusting the fence 11 in the X and Y directions and positioning the fence 11 directly under the inspection port 44, the step pedestal 14 and the stopper 15 are returned to the inside of the fence 11 and the fall pedal 15d is stepped on. 7, the contact member 15h is dropped onto the floor surface of the work floor body 2,
The fence 11 is fixed in that position. At this time, the footstep 14 also stops rotating.

In that state, the lifter 41 is raised again,
The upper part of the fence 11 is inserted into the inspection port 44, and the lifter 41 is stopped at an appropriate height (for example, the position shown in FIG. 9). Then, after that, the foot can be put on the step board 14, and the worker can ascend as it is and enter the ceiling board 43 from the fence 11 easily.

Therefore, the worker can easily enter the space S above the ceiling through the inspection port 44 without being forced to take an unreasonable posture. Moreover, during the lift by the lifter 41,
Since the fence 11 is always present around the worker even when he climbs up on the platform 14, it is extremely safe and can enter the above-ceiling space S psychologically. Of course, the ceiling board 43 around the inspection port 44 will not be accidentally damaged.

When an operator places his / her foot on the step board 14, the weight of the foot is stopped by the stopper 15 via the rotary shaft 13.
Since it is applied to the contact member 15h, the frictional resistance is further increased and the fence 11 is stabilized. It does not wobble or move. Moreover, since a load is also applied to this stopper 15, the fence 1 formed by the rollers 23 and 34 is used.
The burden of supporting 1 is also greatly reduced.

Further, in the above embodiment, since the fence 11 is supported by the rollers 23 and 34 located in the X-direction frames 7 and 8 and the Y-direction frames 31 and 32, the movement of the rollers 23 and 34 is ensured. It is safe because it is difficult for fingers to enter the rail grooves 7f, 7g, 31f, 31g that are formed, and dust and the like are hard to enter.
4 smooth movement can be maintained for a long time. When the stopper 15 is further actuated, the fence 11 is about to be lifted just once, but since the reaction force is received by the fixed X-direction frames 7 and 8 and the Y-direction frames 31 and 32, the contact member 15h and The frictional resistance with the work floor 2 increases, and a stable fixed state of the fence 11 can be secured.

[0036]

According to the aerial work stage according to the first to third aspects of the present invention, since the fence can be inserted into the inspection port of the ceiling so that the worker inside the fence can easily enter the ceiling, The efficiency is higher than before, and the ceiling boards are not damaged. Of course, the workers inside the fence will not fall. In particular, claim 2
In the case of the aerial work stage, the positioning can be performed smoothly when the stage enters the inspection port. Furthermore, the fence can be made more stable when the worker steps on the step material. Moreover, since the stopper itself can function as a supporting member for the fence, the load on the rollers supporting the fence and each frame can be reduced. If the step material is configured to be movable to the outside of the fence as in the third aspect, it is easy for an operator inside the fence to move the fence and position it.

[Brief description of drawings]

FIG. 1 is a perspective view of an aerial work stage according to the present embodiment.

FIG. 2 is a plan view of the aerial work stage of FIG.

3 is a front view of the high-altitude work stage of FIG. 1. FIG.

4 is a perspective view of an X-direction frame in the high-altitude work stage of FIG.

5 is a plan view of the fence in the high-altitude work stage of FIG. 1. FIG.

FIG. 6 is a side view of the stopper in the unlocked state.

FIG. 7 is a side view of the stopper in a locked state.

8 is a front view of the Y-direction frame in the high-altitude work stage of FIG.

9 is an explanatory diagram showing a state in which the fence of the high-altitude work stage of FIG. 1 is made to enter the inspection opening by using the lifter of the movable carriage.

[Explanation of symbols]

 1 Stage for working at high places 2 Floor for working 7, 8 X direction frame 11 Fence 11a Pipe material 12 Bearing 13 Rotating shaft 14 Treading plate 15 Stopper 15h Abutment member 23, 34 Roller 31, 32 Y direction frame 41 Lifter 44 Inspection port

Claims (3)

[Claims] 1. A work stage used when working at a high place, the work floor being attached to an appropriate lifting mechanism, and freely movable in the XY directions in the horizontal direction on the work floor. And a fence having an outer shape that can enter the inspection port of the ceiling, a handrail and a step member, and the fence further includes a stopper that blocks the horizontal movement. To do
Stage for working in high places. 2. A work stage used during work in high places, which has a vertically movable work floor body attached to an appropriate elevating mechanism, and has an outer shape that can enter the inspection port of the ceiling. A fence provided with handrails and step members, a pair of parallel X-direction frames fixed in the X direction on the work floor, and rollers movable along the X-direction frame, and in the Y direction. A pair of parallel Y-direction frames that are passed over, the fence is supported by rollers that are movable along the Y-direction frame, and includes a stopper that is abuttable on the floor surface of the working floor body. A stage for working in high places, which is characterized by 3. The stage for working in high places according to claim 1, wherein the step member is movable to the outside of the fence.