JP3072263B2 - Stage for working at height - Google Patents

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 at heights.

[0002]

2. Description of the Related Art Conventionally, when performing work on a ceiling, a work stage that is moved up and down by an appropriate lifting mechanism may be used. This work stage is required to have a handrail around it to prevent the worker from falling down, and according to the Occupational Safety and Health Regulations, the height of the handrail must be 75 cm or more (however, 90cm or more is required for actual instruction). Therefore, the conventional stage for working at height has a configuration in which a handrail having a height of 90 cm or more is simply erected on the floor surface of the working floor provided on the elevating mechanism.

[0003]

In the case of work on the ceiling, however, it is sometimes necessary to work not only on the ceiling surface but also on the ceiling, and in the latter case, the worker can work from the inspection port on the ceiling surface. Need to get into the space.

In this case, the conventional work stage is
For example, even if it is raised by the elevation mechanism of the aerial work vehicle and brought close to the inspection port, the upper end of the handrail abuts the ceiling surface, so that the floor surface of the work floor is 90 cm from the ceiling surface after all. Can be approached only to the lowered position. In other words, it is necessary for an operator to enter the inspection opening at a height of 90 cm or more from the floor.

[0005] As described above, in the conventional stage for working at a high place, the handrail has a structure simply standing upright on the floor of the working floor, so that the worker can move from the inspection port located at such a high position to the ceiling above. There is no foothold when entering the space. Therefore, as it is, an appropriate table is placed on the floor surface of the work floor or the user climbs up by putting a foot on the handrail, but these are all dangerous and are prohibited by the rules.

[0006] Therefore, conventionally, only the upper part of the body is put into the inspection opening with the working floor body being close to the ceiling, and the rope of the wearing safety belt is tied to an appropriate member above the ceiling, and then temporarily. The work floor was lowered to remove the handrail, and then the work floor was gradually raised again to a height at which the worker could enter the ceiling.

However, such a series of operations cannot be performed by one person, and is extremely inefficient. Moreover, the work of tying the ropes of the safety belt to the members behind the ceiling is also troublesome, and in some cases, an unreasonable posture may be imposed. In many cases, the ceiling board may be damaged.

The present invention has been made in view of the above circumstances, and provides a high-altitude work stage that allows a worker to enter a space above a ceiling safely and without difficulty without removing a handrail. The purpose is to solve the problem.

[0009]

According to the first aspect of the present invention, there is provided a working floor attached to an appropriate lifting mechanism, and an XY direction on the working floor in a horizontal direction. A movable fence, and the fence has an outer shape that can enter the inspection port of the ceiling,
A handrail and a step member are provided, and the step member is rotated.
And a movable stage outside the fence, wherein the fence further includes a stopper for preventing the horizontal movement. According to claim 2, it is used at the time of work at a high place.
Work stage, attached to an appropriate lifting mechanism
A working floor, and a horizontal surface on the working floor.
A fence that is movable in the X-Y directions
The door has a contour that allows it to enter the ceiling inspection door.
A railing and a stepping material;
Has a stopper for preventing the horizontal movement,
The stopper must be movable outside the fence.
A stage for working at heights is provided.

According to a third aspect of the present invention, there is provided a work floor attached to an appropriate lifting mechanism, a fence having an external shape which can enter into an inspection port of a ceiling, and having 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 supported by rollers movable along the Y-direction frame, and has a stopper that can abut on a floor surface of the working floor body, wherein the stage for working at a high place is provided. Is provided.

According to the second and third aspects of the present invention, the step member in each of the high-altitude working stages is configured to be movable outside the fence as described in the fourth aspect , so that more preferable operation and effect can be obtained. .

The fence referred to in the high-altitude work stage according to any one of claims 1 to 4 is, for example, a safety fence or the like which substantially surrounds a worker by a fence. And the upper end of this fence may be a handrail. The plane form of the fence itself may be circular or rectangular. Further, since the fence has an outer shape that can enter the inspection opening of the ceiling, the fence can enter the inspection opening as it is even when the working floor is raised. Since the fence is provided with a stepping material such as a tread, for example, a worker in the fence can climb on the stepping material with his feet and easily enter the ceiling.

The work floor is mounted on an elevation mechanism or a lifter provided on a movable carriage or the like and is moved up and down. When viewed from below, the fence is positioned just below a target inspection port. As described above, it is practically difficult to move and stop the cart. In this respect, according to the present invention, in the case of the first and second aspects, the fence is movable in the XY directions in the horizontal direction on the work floor, and the stopper can prevent the horizontal movement. Then, the worker inside the fence can position the fence on the work floor. That is, fine adjustment can be performed. And in the case of claim 1, the step material is
It can rotate and move outside the fence, and
In the case of claim 2, the stopper is moved outside the fence.
Because they can move freely, put the fence directly under the inspection door
The positioning work is easy.

According to the third aspect of the present invention, the fence is supported by rollers movable along the Y-direction frame.
Since it has rollers movable along the direction frame, the X-direction frame and the Y-direction frame function as a so-called rail, and this fence is movable in the XY directions in the horizontal direction on the working floor. . In addition, since it is movable by the rollers, the movement is smooth. Since the stopper can freely contact the floor surface of the working floor, the horizontal movement of the fence is prevented by frictional resistance. In this case, if a structure is adopted in which the stopper is dropped on the floor surface to make contact with it, when the worker steps on the step material,
The frictional resistance is further increased by the load at that time, and the state becomes more stable. Further, the stopper itself also functions as a support member for the fence, so that the load on the rollers supporting the fence and each frame is reduced.

According to a fourth aspect of the present invention, when the step member is configured to be movable to the outside of the fence, when the worker inside the fence positions the fence, the step member is taken out of the fence. By doing so, the positioning step and the like can be easily performed without the step member being in the way.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will now be given of an embodiment of the present invention. FIG. 1 shows an external appearance of an altitude working stage 1 according to the present embodiment, FIG. 2 shows a plan view, and FIG. 3 shows a front view. In this high-altitude work stage 1, columns 3, 4, 5, and 6 are erected at both ends of a pair of short sides of a work floor 2 having a rectangular plane, and the upper end of the columns 3, 6 is provided. , And X-direction frames 7, 8 are respectively installed in parallel between the upper ends of the columns 4, 5. Note that the X-direction frames 7, 8 are respectively
Reinforcing members 9 and 10 are fixed between both end portions of the respective members.

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, projecting portions 7b, 7 which are vertically bent inward are provided.
c is formed, and a concave portion between each protruding portion 7b, 7c and the side surface 7d, 7e of the X-direction frame 7 constitutes a rail groove 7f, 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, has a substantially cage shape as a whole, and has a partially open side surface. It has a plane C-shaped configuration. Further, the outer diameter of the fence 11 is large enough to enter the ceiling inspection opening, and is large enough to allow personnel to enter the fence 11. An operator can enter and exit the fence 11 from the opening on the side surface. In addition, in terms of safety measures, if a chain or the like can be freely passed over the opening, safety is further improved. The flat C-shaped pipe member 11a at the upper end of the fence 11 forms a handrail.

On the fence 11, as shown in FIG.
Bearings 12 are vertically fixed to one of the vertical pipe members constituting the fence 11, and each bearing 12 is provided with a rotating shaft 13 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, treads 14 serving as step members are fixed at a total of three places at appropriate intervals in the vertical direction.

A stopper 15 is provided below the rotating shaft 13. The stopper 15 has a 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 a piston member 15b. A coil spring 15c that is always pulled upward, and a substantially V supported by a piston member 15b at a shaft support portion P thereof.
The drop pedal 15d is provided between the tip end (left end in FIG. 6) of the mold drop pedal 15d and the flange portion of the main body 15a, and both ends thereof are supported by the support portions Q and R, respectively. The lifting pedal 15 which shares two pivot portions P and Q of the link member 15e and the drop pedal 15d, and the pivot portion P of the piston member 15b is located in the long hole 15f.
g, a contact member 15h provided on the lower end surface of the piston member 15b. In addition, drop pedal 1
A locking portion 15i is formed at the tip of 5d.
On the lower surface of h, a rubber material or the like having a high friction coefficient such as a rubber material is provided.

According to the stopper 15 having such a configuration, in the normal state, that is, in the unlocked state, the coil spring 15
c, the piston member 15b is pulled up, and as shown in FIGS. 3 and 6, the contact member 15h
Is separated from the work floor 2.

When the fall pedal 15d is depressed against the contraction of the coil spring 15c, the shaft support Q is moved to the main body 15a.
Side, the contact member 15h contacts the working floor 2,
If the user steps more strongly, the link member 15 is
e moves toward the main body 15a and extends, and a lifting force acts on the shaft support R. When the shaft support Q is closer to the main body 15a than the line connecting the shaft supports P and R, the locking portion 15i serves as a stopper, and the shaft support Q does not move any further. That is, even if 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 lock state is established by the stopper 15.

On the other hand, when releasing this locked state,
By stepping on the lift pedal 15g, the front end of the shaft support portion Q first comes into contact with the main body 15a, and by further depressing the lift pedal 15g, the front end portion becomes the fulcrum due to the presence of the elongated hole 15f. Get up pedal 15
d rotates clockwise, the shaft support Q is pushed outward,
Thereby, the locking by the locking portion 15i is released.
Thereafter, 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 construction, the tread plate 14 and the stopper 15 can be moved outside the fence 11 as shown in FIGS.
d, each time the lifting pedal 15g is depressed, the contact member 1
5h comes into contact with the work floor 2 to lock it,
This locked state can be released. The setting position of the rotating shaft 13 may be a vertical pipe material located at an end of an opening of the fence 11 (an opening of the substantially C-shaped flat fence 11). In such a case, the rotating shaft itself can be retracted outside the fence 11.

On both sides of the fence 11 according to the above-described configuration, there are provided a total of four support fittings 21 as shown in FIGS. 3 and 8, and a roller support is provided on the upper surface of the support fitting 21. The member 22 is fixed. The upper part of each roller support member 22 passes through the opening 31a of the Y-direction frames 31, 32, and the roller 2 is rotatable in rail grooves 31f, 31g in the Y-direction frames 31, 32.
8 are rotatably provided two by two (for convenience of explanation, in FIG. 8, the opening 31 of the Y-direction frame 31 is provided).
a, only the rail grooves 31f and 31g are shown, but the Y-direction frame 32 has the same configuration).

The Y-direction frames 31 and 32 have the same shape and the same size, and have the same structure as the X-direction frames 7 and 8 except for the length. The Y-direction frames 31 and 32 are arranged in parallel, and have the same length as the short side of the working floor 2. 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 (the opening 8a is not shown) on the lower surface of the X-direction frames 7, 8, and is rotatable in the rail grooves 7f, 7g. Roller 34 is a roller supporting member 33
It is provided rotatably on the upper part of.

Therefore, the fence 11 is supported by the rollers 23 located in the Y-direction frames 31 and 32, and the longitudinal direction of the Y-direction frames 31, 32, ie, Y
It is movable in any direction. Also, the Y-direction frames 31, 32
The rollers 34 themselves located in the X-direction frames 7, 8
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 at heights according to the present embodiment
Has a configuration described above. For example, as shown in FIG.
Is installed on the lifter 41 and used.

The procedure when an operator enters the space S behind the ceiling from the inspection opening 44 formed in the ceiling board 43 and performs a predetermined operation will be described. , The attached outrigger 45 is set, and the movable carriage 42 is fixed.

Next, the worker gets into the fence 11 of the high-altitude work stage 1 and operates a controller (not shown) for moving the lifter 41 up and down to raise the high-altitude work stage 1. Then, when approaching the ceiling board 43 to an appropriate distance, the lifting of the lifter 41 is stopped, and the lifting pedal 15g of the stopper 15 is depressed, so that the contact member 15
h is separated from the floor surface of the working floor 2. In this state, the fence 11 is movable in the XY directions on the work floor 2. Also, the platform 14 and the stopper 15 are fences 11
Can be moved outside. Therefore, the work of positioning the fence 11 directly below the inspection port 44 is easy.

After fine adjustment of the fence 11 in the X and Y directions, and positioning the fence 11 immediately below the inspection port 44, the step 14 and the stopper 15 are returned into the fence 11, and the drop pedal 15d is depressed. 7, the contact member 15h is dropped on the floor of the working floor 2,
The fence 11 is fixed at that position. At this time, the platform 14 also does not rotate.

In this state, the lifter 41 is raised again,
The upper part of the fence 11 is made to enter 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 operator can step on the platform 14 and ascend as it is to easily enter the ceiling board 43 from the fence 11.

Therefore, the worker can easily enter the space S above the ceiling through the inspection port 44 without being forced to take an excessive posture. Moreover, during the ascent by the lifter 41,
The fence 11 is always present around the worker when climbing with the foot on the step 14, so it is extremely safe and can enter the under-the-ceiling space S with psychological security. Of course, the ceiling board 43 around the inspection port 44 is not accidentally damaged.

When the worker steps on the platform 14, the weight of the worker is transferred to the stopper 15 via the rotating shaft 13.
, The frictional resistance is further increased, and the fence 11 is stabilized. It does not wobble or move. In addition, since a load is also applied to the stopper 15, the fence 1 by the rollers 23 and 34 is used.
The burden of supporting 1 is also greatly reduced.

Further, in the above embodiment, the fence 11 is supported by the rollers 23, 34 located in the X-direction frames 7, 8, and the Y-direction frames 31, 32, so that the movement of the rollers 23, 34 is ensured. The fingers are hard to enter into the rail grooves 7f, 7g, 31f, 31g, and the rollers 23, 3
4 can be maintained for a long period of time. When the stopper 15 is further operated, the fence 11 is just lifted once, but the reaction force is received by the fixed X-direction frames 7, 8 and the Y-direction frames 31, 32. The frictional resistance with the work floor 2 is increased, and a stable fixing state of the fence 11 can be secured.

[0036]

According to the high-altitude work stage according to the first to fourth aspects, the fence can enter the inspection opening of the ceiling, and the worker inside the fence can easily enter the back of the ceiling without difficulty. Efficiency is improved compared to the past, and there is no damage to ceiling boards and the like. Of course, workers inside the fence will not fall. In particular, claim 3
In the case of the stage for working at height, the positioning when entering the inspection port can be performed smoothly. Furthermore, when the worker steps on the stepping material, the fence can be made more stable. In addition, since the stopper itself can function as a support member for the fence, the load on the rollers supporting the fence and each frame is reduced. If the step member is configured to be movable to the outside of the fence as in claim 4 , it is easy for an operator inside the fence to move and position the fence.

[Brief description of the drawings]

FIG. 1 is a perspective view of an altitude working stage according to an embodiment.

FIG. 2 is a plan view of the high work stage of FIG. 1;

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

FIG. 4 is a perspective view of an X-direction frame of the high work stage of FIG. 1;

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

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

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

FIG. 8 is a front view of a Y-direction frame in the high work stage of FIG. 1;

FIG. 9 is an explanatory view showing a state in which the fence of the high-altitude work stage shown in FIG. 1 has entered the inspection opening using the lifter of the movable trolley.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work stage at height 2 Work floor 7, 8 X direction frame 11 Fence 11a Pipe material 12 Bearing 13 Rotation shaft 14 Tread plate 15 Stopper 15h Contact member 23, 34 Roller 31, 32 Y direction frame 41 Lifter 44 Inspection port

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-262397 (JP, A) JP-A 6-25296 (JP, U) JP-A 7-43168 (JP, U) (58) Investigation Field (Int.Cl. ⁷ , DB name) B66F 9/06

Claims (4)

(57) [Claims] 1. A work stage used when working at heights
A working floor attached to an appropriate lifting mechanism, and moving in a horizontal XY direction on the working floor.
Flexible fence, said fence is a ceiling access door
It has an external shape that allows it to enter the
Equipped with woodThe step material rotates and moves outside the fence
It ’s free,  Furthermore, the fence prevents the horizontal movement
An aerial work stay characterized by a stopper
Di. 2. A work stage used when working at heights.
A work floor attached to an appropriate lifting mechanism, and moving in a horizontal XY direction on the work floor.
Flexible fence, said fence is a ceiling access door
It has an external shape that allows it to enter the
Material, and the fence prevents movement in the horizontal direction.
A stopper is provided, and the stopper is movable outside the fence.
And a stage for working at heights. 3. A work stage used when working at heights.
A vertically movable work floor attached to an appropriate lifting mechanism.
It has an external shape that allows it to enter the body and the ceiling
And a pair of parallel X fixed on the work floor in the X direction.
A direction frame, and a roller movable along the X direction frame,
And a pair of parallel Y-direction frames passed in the Y-direction.
And the fence is movable along the Y-direction frame.
And the working floor
It is equipped with a stopper that can abut on the floor,
Stage for working at height. 4. The stepping material moves outside the fence.
The height according to claim 2 or 3, wherein
Work stage.