JPH0899781A - Scaffold board for lower side work in elevator shaft - Google Patents

Abstract

PURPOSE: To provide a scaffold board for lower side work in an elevator shaft in which an unstable working condition of the postures and the feet of workers can be improved by providing a scaffold board, so as to improve the safety and the effeciently of the working. CONSTITUTION: A scaffold board 7 is housed in a housing space 13 formed under the floor of a landing hall 1. When the scaffold board 7 is used, a worker goes down to a pit 5, lifts up a stopper 10, picks up the scaffold board 7 from the housing space 13, puts the tip of the scaffold board 7 on an angle 8, and fixes the scaffold board 7 by the stopper 10. Consequently, it is not necessary to carry in a stepladder, and the going up and down on the stepladder to pick up tools-and parts is eliminated. As a result, the working efficiency is improved, the feet is stabilized, and the safety is increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scaffolding table for lower work of an elevator hoistway, and more particularly to a scaffolding table for lower work of an elevator hoistway which enables safe and efficient work without using a stepladder.

[0002]

2. Description of the Related Art FIG. 21 is a schematic view showing a work in a lower portion of a conventional elevator hoistway. In the figure, 1 is the lowest floor of the elevator, 1a is a hall sill for the foot of the door provided in the hall 1, 2 is a hall toe guard, 3 is an elevator hoistway, 4 is a stepladder used for work, and 4a is Workers 5 are hoistway pits, and 6 is an end point switch provided at the bottom of the hoistway.

The conventional elevator hoistway is constructed as described above, and when the end point switch 6 is replaced by the work under the hoistway 3, the worker 4a from the pit 5 does not work.
Those who are in a high place that is out of reach of are using the stepladder 4 for their work.

[0004]

Since the stepladder 4 installed on-site in the work of the elevator hoistway as described above is a foldable type, it leans a little when leaning against the wall of the hoistway 3 and the posture becomes unstable. There was a problem that
In addition, since the scaffolding is limited in the elevator hoistway, and there is no place to put tools and parts when replacing the end point switch 6, tools and the like are placed on the landing 1 and a stepladder 4 is used every time it is replaced.
There was also a problem that the work efficiency had to be lowered and there was a high risk of falling because of having to move up and down. The present invention has been made to solve such problems, and an elevator hoistway that improves the unstable work situation of the posture and feet by providing a scaffolding base, and improves the safety and efficiency of the work The purpose is to obtain a scaffolding for the lower work.

[0005]

The invention according to claim 1 of the present invention is a scaffolding platform for work in the lower part of an elevator hoistway, said scaffolding platform being located under a landing floor on the lowest floor of an elevator. It is removably housed in the provided storage space, is taken out from the storage space at the time of use, and is installed in the elevator hoistway.

In the invention according to claim 2 of the present invention, the scaffolding base is a multi-stage divided type.

According to the third aspect of the present invention, the scaffolding base is taken out from the storage space by the wire rope.

According to a fourth aspect of the present invention, the scaffolding base is hydraulically driven to be taken out from the storage space.

According to the fifth aspect of the present invention, the scaffolding base is taken out from the storage space by a screw drive system.

[0010]

According to the first aspect of the present invention, since the scaffolding base is stored under the landing floor on the lowest floor of the elevator, it is possible to save the trouble of bringing a stepladder, and to prevent the stepladder from moving up and down to stabilize the feet.

In the second aspect of the present invention, since the scaffolding base is of a multi-stage type, the scaffolding base can be shortened and the storage space for the scaffolding base can be shortened.

According to the third aspect of the present invention, since the scaffolding base is taken out from the storage space by the wire rope, it is possible to save the labor of pulling out the scaffolding base by hand and to prevent the worker from getting down to the pit.

According to the fourth aspect of the present invention, since the scaffolding base is hydraulically driven and taken out from the storage space, the scaffolding base is automatically installed.

According to the fifth aspect of the present invention, since the scaffolding base is taken out from the storage space by the screw drive type, the time is shortened as compared with the case where the scaffolding base is manually installed and stored,
In addition, since it is a screw drive type, there is no danger of slipping when moving during work, increasing safety.

[0015]

【Example】

Example 1. 1 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to Embodiment 1 of the present invention, and FIG. 2 is an enlarged view of a main part of FIG. In the drawings, the same reference numerals indicate the same or corresponding parts. In these figures, 7 is a scaffolding according to the present invention, 8 is an angle used when installing the scaffolding 7, 9 is a bolt for attaching the angle 8 to the wall of the hoistway 3, and 10 is the scaffolding 7 fixed Stopper 11 for fixing, bolts attaching the stopper 10 to the landing threshold 1a, 12 and 12a rollers for making it easy to pull back the scaffolding 7, and 13 provided in the landing 1 for storing the scaffolding 7 It is a storage space.

In the scaffolding for lower part of the hoistway constructed as described above, the landing toe guard 2 at the outlet has an opening through which the scaffolding 7 penetrates. Further, the scaffolding base 7 is provided with an insertion portion 7a into which a stopper 10 for fixing the scaffolding base 7 is fitted after being completely pulled out and installed. FIG. 3 is a schematic side view showing a state in which the scaffolding base 7 is stored in the storage space 13.
The stopper 10 also serves to prevent the scaffolding base 7 from coming out of the storage space 13 due to some cause such as an earthquake when the scaffolding base 7 is stored in the storage space 13. FIG. 4 is a schematic plan view showing a state where the scaffolding base 7 is installed as seen from above. The angles 8 for receiving the scaffolding 7 are attached to the left and right one by one as shown in FIG.

Next, a method of installing the scaffolding base 7 will be described (from FIG. 3 to FIG. 1). First, a worker (not shown) descends into the pit 5, raises the stopper 10 to pull out the scaffolding base 7 from the storage space 13, puts the tip of the scaffolding base 7 on the angle 8, and then puts the stopper 10 on the scaffolding base 7. It is fitted and fixed in the insertion part 7a. Next, a method of storing the scaffolding base 7 will be described (from FIG. 1 to FIG. 3). Scaffolding stand 7
Remove the stopper 10 from the insertion part 7a of the
The scaffolding base 7 can be stored by lowering the stopper 10 after returning the to the storage space 13.

By providing this scaffolding base 7, it is possible to save the labor of bringing the stepladder 4 out of the machine room and to secure a stable posture of the worker's feet, so that the safety can be improved. Further, since it becomes possible to place tools and the like on the scaffolding base 7, it is not necessary to move up and down the stepladder 4 as in the present situation, and the working efficiency can be improved.

Example 2. FIG. 5 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a second embodiment of the present invention, and FIG. 6 shows a state in which the scaffolding platform in FIG. 5 is stored. In this embodiment, the scaffolding base 7 described in the first embodiment is a multi-stage split type, for example, a double split type, and scaffolding bases 7b and 7c are used.
It is what That is, by dividing the scaffolding base 7 into the scaffolding bases 7b and 7c, the scaffolding base itself and the storage space 13 can be made short and compact, and the construction cost can be reduced. In addition, 14 is a stopper of the scaffolding base 7c.

Example 3. FIG. 7 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a third embodiment of the present invention. In this embodiment, the tip of the scaffolding base 7c and the tip of the angle 8 described in Embodiment 2 are respectively attached to the scaffolding base 7c.
It is changed to a key like d and angle 8a. Due to such a change, even if the scaffolds 7b and 7d move, the scaffold 7d does not have a risk of falling off the angle 8a, and the work can be performed safely.

Example 4. FIG. 8 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a fourth embodiment of the present invention. In this embodiment, unlike the first to third embodiments, the storage space 13 is not placed directly beside the storage space 1
It is a slant like 3a. Storage space 13
If a is provided obliquely, there is no possibility that the scaffolding bases 7b and 7d will come out of the storage space 13a, so that the safety when the elevator is moving is increased.

Embodiment 5. FIG. 9 is a schematic side view showing a scaffolding table for working under an elevator hoistway according to a fourth embodiment of the present invention. In this embodiment, the wire rope 17 is attached to the tip of the scaffold 7d of the third embodiment (FIG. 7),
The pulley 16 and the winding device 15 for the wire rope 17 are used so that the scaffolds 7b and 7e can be pulled out. Normally, the wire rope 17 is set in the pit 5, and the winding device 15 is used for the storage space 13 of the hall 1.
Place it in b.

FIG. 10 shows a state in which the scaffolds 7b and 7e are pulled out. First, the winding device 15 is fitted into the groove of the hall sill 1a, and fixed by fixing it with the fixing screw 19 in the screw hole 18 for fixing the fixing screw. Then, the wire rope 17 is wound up by the winding device 15, and the scaffolding base 7
Pull out b and 7e from the storage space 13b. Figure 11
[Fig. 6] is a plan view showing a state in which scaffolding bases 7b and 7e are installed. With such a configuration, it is possible for the worker not to get down to the pit 5 and pull out the scaffolds 7b and 7e by hand.
The safety is increased because it never descends.

Example 6. FIG. 12 shows a sixth embodiment of the present invention.
FIG. 13 is a plan view showing a scaffolding platform for working under the elevator hoistway according to FIG. 13, and FIG. 13 is a schematic side view of the scaffolding platform shown in FIG. 12. In this embodiment, the scaffolding bases 7b and 7e of the fifth embodiment are used.
The scaffolding table composed of one piece divided into two as described above is divided into two pieces like the scaffolding steps 7f and 7g. The installation method is the same as that of the fifth embodiment, the wire ropes 17a and 17b are attached to the tips of the scaffolds 7f and 7g, and the pulleys 16a and 1 are attached.
6b, 16c, 16d and winding device 15a, 15b are used for installation. The pulleys 16a and 16b are shown in FIG.
It is attached in two steps, as shown in. Scaffolding 17f,
By dividing the scaffolding base into two pieces like 17 g, the weight is lighter than that of the scaffolding bases 7 b and 7 e in the fifth embodiment, the installation becomes easy, and the safety at the time of storage is improved.

Example 7. FIG. 14 shows a seventh embodiment of the present invention.
FIG. 3 is a schematic side view showing a scaffolding platform for lower work of an elevator hoistway according to FIG. In this embodiment, unlike the fifth embodiment, the winding device 15 is not used, but the oil 22 and the flow rate control device 2 are used.
0, the pump 21 is used, and the scaffolding base 7h is installed by a hydraulic drive system using the mechanism of the hydraulic plunger of the elevator. First, the flow rate control device 20 and the pump 21 are embedded in the landing 1, and the flow rate control device 20 is operated by the switch 23 to automatically install the scaffolding base 7h. With such a configuration, installation can be performed in a shorter time than manual installation of the scaffolding, so that installation time is shortened and work efficiency is improved.

Example 8. FIG. 15 shows the eighth embodiment of the present invention.
FIG. 17 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to FIG. 16, and FIG. 16 shows a state in which the scaffolding platform in FIG. 15 is stored. In this embodiment, the scaffolding bases 7b and 7e are not manually installed by using the winding device 15 as in the fifth embodiment, but the scaffolding bases are installed by a motor. That is,
The screw is cut inside the scaffold 7i, and the motor 24 is switched to the switch 2 using the structure of the floor display of the elevator.
The scaffolding base 7i is automatically moved by the screw rod 25 and can be installed by a screw drive system. With such a configuration, the time can be shortened and the workability is improved as compared with the case of manually installing and storing the scaffolding base. Further, since the scaffolding base 7i is of a screw type, there is no fear that the scaffolding base 7i will be displaced when the scaffolding base 7i moves during work on the scaffolding base 7i, and safety is increased.

Example 9. FIG. 17 shows a ninth embodiment of the present invention.
FIG. 3 is a schematic side view showing a scaffolding platform for lower work of an elevator hoistway according to FIG. In this embodiment, a scaffolding base 7j in which the tip of the scaffolding base 7h in the seventh embodiment is changed to a key is used. Further, the flow control device 20 is operated by the switch 23b, and when the scaffolding base 7j is installed, when the tip of the scaffolding base 7j is separated from the switch 27, the switch 27 is turned on and the pit light 26 is turned on. is there. The pit light 26 is newly installed. With such a configuration, a worker has conventionally gotten down to the pit 5 and turned on the pit light, but it is not necessary to go down to the pit 5, workability is improved, and the feet are bright and easy to see, so that safety is also increased.

Example 10. FIG. 18 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to Embodiment 10 of the present invention, FIG. 19 shows a state in which the scaffolding platform 7j is being installed, and FIG. 20 shows the scaffolding platform 7j. It shows the state where it has been installed. In this embodiment, a safety bell 28 is attached. That is, by turning off the switch 29 at the tip of the scaffold 7j, the safety bell 28 is prevented from ringing. When the scaffolding base 7j is installed, as shown in FIG. 19, the switch 23c operates the flow rate control device 20.
When taking out the scaffolding base 7j from the storage space 13, the scaffolding base 7j
The safety bell 28 is activated and an alarm sounds when the tip of the is separated from the switch 29.

Next, the switch 29a is attached and placed so that the switch 29a is turned on when the scaffolding base 7j is completely installed, and the safety bell 28 is stopped by turning on the switch 29a. With such a configuration, the operator can easily understand that the scaffolding base 7j is automatically coming out, so that the operator does not accidentally put out his hand or enter the pit 5, and the safety is increased.

[0030]

As described above, the first aspect of the present invention is a scaffolding platform for work in the lower portion of the elevator hoistway, and the scaffolding platform is provided under the floor of the elevator on the lowest floor of the elevator. Since it is stored in the storage space that can be freely taken out and is taken out of the above storage space when it is used and installed in the elevator hoistway, it is not necessary to bring a stepladder from the machine room, and it is possible to raise and lower the stepladder to pick up tools and parts. Since the work efficiency is increased and the feet are stable, the safety is also increased.

According to the second aspect of the present invention, since the scaffolding base is of a multi-stage type, the scaffolding base and the storage space can be shortened, and the construction cost can be reduced.

According to the third aspect of the present invention, since the scaffolding base is taken out from the storage space by the wire rope, it is possible to save the trouble of pulling out the scaffolding base by hand, and it is not necessary for the worker to get down to the pit, so that the safety is improved. Produce an effect.

According to the fourth aspect of the present invention, since the scaffolding base is hydraulically driven and is taken out from the storage space, the scaffolding base can be automatically installed, and the installation time is shorter than manual installation of the scaffolding base. This has the effect of improving work efficiency.

According to the fifth aspect of the present invention, since the scaffolding base is taken out from the storage space by the screw drive type, the installation time can be shortened and the work efficiency can be improved and the scaffolding base on the scaffolding base can be improved compared with the case where the scaffolding base is manually installed. There is no danger of shifting when moving during work, and safety is increased.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the scaffolding base shown in FIG.

FIG. 3 is a schematic side view showing a state where the scaffolding base shown in FIG. 1 is stored in a storage space.

FIG. 4 is a schematic plan view showing a state in which a scaffolding base is installed according to Embodiment 1 of the present invention.

FIG. 5 is a schematic side view showing a scaffolding table for working under an elevator hoistway according to a second embodiment of the present invention.

FIG. 6 is a schematic side view showing a state in which the scaffolding base shown in FIG. 5 is stored in a storage space.

FIG. 7 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a third embodiment of the present invention.

FIG. 8 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a fourth embodiment of the present invention.

FIG. 9 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to a fifth embodiment of the present invention.

FIG. 10 is a schematic side view showing a state in which the scaffolding base shown in FIG. 9 is pulled out.

FIG. 11 is a schematic plan view showing a state in which the scaffolding base shown in FIG. 9 is pulled out.

FIG. 12 is a schematic plan view showing a scaffolding table for working under an elevator hoistway according to Embodiment 6 of the present invention.

FIG. 13 is a schematic side view of the scaffolding base shown in FIG.

FIG. 14 is a schematic side view showing a scaffolding platform for working under an elevator hoistway according to Embodiment 7 of the present invention.

FIG. 15 is a schematic side view showing a scaffolding base for working under an elevator hoistway according to Embodiment 8 of the present invention.

16 is a schematic side view showing a state where the scaffolding base shown in FIG. 15 is stored in a storage space.

FIG. 17 is a schematic side view showing a scaffolding table for working under an elevator hoistway according to Embodiment 9 of the present invention.

FIG. 18 is a schematic side view showing a scaffolding table for working under an elevator hoistway according to Embodiment 10 of the present invention.

FIG. 19 is a schematic side view showing a state in which the scaffolding base shown in FIG. 18 is being installed.

FIG. 20 is a schematic side view showing a state where the scaffolding base shown in FIG. 18 has been installed.

FIG. 21 is a schematic view showing a working state in the lower portion of a conventional elevator hoistway.

[Explanation of symbols]

1 hall 1a hall sill 2 hall tow guard 3
Hoistway, 4 stepladders, 5 pits, 6 Hoistway lower end point switch, 7, 7b, 7c, 7d, 7e, 7f, 7g, 7
h, 7i, 7j scaffolding, 7a insertion part, 8, 8a
Angle, 9, 11 bolts, 10 stoppers, 1
2, 12a Roller, 13, 13a, 13b Storage space, 14 Stopper, 15, 15a, 15b Winding device, 16, 16a, 16b, 16c, 16d
Pulley, 17, 17a, 17b Wire rope, 18 Screw hole, 19 Fixing screw, 20 Flow control device, 21 Pump, 22 Oil, 23, 23a, 23b, 23c, 2
7, 29, 29a switch, 24 motor, 25
Screw rod, 26 pit lights, 28 safety bell.

Claims (5)

[Claims] 1. A scaffolding platform for work in a lower portion of an elevator hoistway, wherein the scaffolding platform is removably stored in a storage space provided under a landing floor on the lowest floor of an elevator, and the storage space is used when in use. A scaffolding stand for work at the bottom of an elevator hoistway, which is taken out of the elevator and installed in the elevator hoistway. 2. The scaffolding base for lower work of an elevator hoistway according to claim 1, wherein the scaffolding base is a multi-stage split type. 3. The scaffolding base for working under an elevator hoistway according to claim 1, wherein the scaffolding base is taken out from the storage space by a wire rope. 4. The scaffolding table for working under an elevator hoistway according to claim 1 or 2, wherein the scaffolding table is hydraulically driven and is taken out from the storage space. 5. The scaffolding table for working under an elevator hoistway according to claim 1 or 2, wherein the scaffolding table is driven by a screw and is taken out from the storage space.