JPH0250031B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an in-hoistway working device for installing equipment such as a guide rail in an elevator hoistway, and particularly includes a work platform frame that moves up and down along a vertical reference line. This invention relates to a hoistway working device.

Generally, when installing various types of equipment in a hoistway, as shown in Figure 1, a scaffolding frame 2 is constructed over the entire height of the hoistway 1, a scaffolding platform 2F is attached to this at a height that suits the working position, and A piano wire 3 is suspended from the machine room MR at the top of the hoistway or from a reference position at the entrance/exit of the reference floor, and a worker climbs onto the scaffolding platform 2F using this piano wire 3 as a reference and attaches the anchor bolt 6 for fixing the guide rail to the hoistway. After drilling the holes in the wall, fix the mounting brackets 5 with the anchor bolts 6, and then attach the piano wire 3.
The guide rail 4 is mounted on the mounting bracket 5 based on the reference.

Therefore, in order to drill holes for anchor bolts 6, for example, a worker must lift each part using an electric winch, etc., and climb up the scaffolding platform 2F one after another to perform the work. This was repeated every time the content changed. This not only requires a great deal of labor and time, but also poses a problem in that it is difficult to maintain the safety of workers because they work on unsafe scaffolding platforms at high places, resulting in high levels of fatigue.

On the other hand, as shown in Fig. 2, a hoisting machine 7, a control panel 8, a speed governor 9
After installing, lift the guide rail 4 using an electric winch or the like using the suspended piano wire 3 as a reference, center and fix the lowest guide rail 4A, and then assemble the car frame 10 and counterweight 11 to remove both. are connected by a wire rope 12, suspended by the hoisting machine 7, and the car frame 10 is used as a workbench.

According to this method, the worker can move the car frame according to the work position, so it is possible to improve safety, work time, and labor compared to the above method.
Unless the hoisting machine 7, the control panel, and the speed governor 9 are installed, work within the hoistway cannot be carried out, and this poses a problem in that the overall elevator installation work takes a long time.

The present invention has been made in view of the above points, and an object of the present invention is to provide an in-hoistway working device that can shorten elevator installation time without compromising worker safety.

In order to achieve the above object, the present invention provides a work platform frame including a vertical reference device for detecting a vertical reference line in a hoistway, a detection device for detecting the vertical reference line, and a work platform frame provided on the work platform frame. a posture holding device that aligns the work platform frame horizontally with the vertical reference line; and a guide rail centering device that is provided on the work platform frame and centers the guide rail with respect to the vertical reference line. The hoistway working device is composed of a lifting device provided on the work platform frame and operating along the guide rail, and a control device that controls the operation of each device on the work platform frame.

That is, the first feature of the in-hoistway working device of the present invention is that it has a self-elevating function of ascending and descending along the vertical reference line. The second feature is that a guide rail is attached to a reference position, and the robot moves up and down along the attached guide rail. Furthermore, other features of the in-hoistway working device of the present invention will become clear from the embodiments described below.

An embodiment of the present invention will be described above with reference to FIGS. 3 to 5. A laser oscillation device 13 is installed on the bottom of the pit 1P of the hoistway 1, and a laser beam 14 is emitted vertically.
oscillates and uses it as a vertical reference line. On the other hand, the work platform frame 15 is assembled in the same pit 1P. The work platform frame 15 is equipped with a light receiver 16 that detects the laser beam 14, and the work platform frame 15 is held horizontally in a fixed position based on the current value generated by detecting the laser beam 14. A control device 17 and a posture maintaining device are also provided. That is, the control device calculates the position of the work platform frame 15, and outputs the laser beam 1.
4 is placed in the center of the light receiver 16, a signal is sent to the posture holding device, and the operation of each device, which will be described later, is controlled respectively. The posture holding device may include a hydraulic positioning device 18 mounted on the work platform frame 15 and facing the hoistway wall surface 19. This hydraulic positioning device 18 is mounted opposite to the four walls of the hoistway, and each has a plunger 20 driven by hydraulic pressure.
In addition, upper fixing devices 21A and 2 are provided at the upper and lower parts of the guide rail installation surface of the work platform frame 15.
1B and lower fixing devices 22A to 22C, of which the lower fixing devices 22A to 22C are equipped with hydraulic telescopic lifting legs 23A to 23A which extend and contract using hydraulic pressure.
Equipped with 23C. In addition, each of the fixing devices 21
A, 21B, 22A to 22C have engaging pieces 24A, 24B, 25 that extend and contract toward the guide rail side.
A to 25D are provided, safety devices 26 and 27 for clamping the guide rail are provided adjacent to the engaging pieces, and guide rail centering devices 28A to 28D are provided adjacent to the safety devices. There is. 29A and 29B are centering devices for the counterweight guide rail 4'.

Further, 30A to 30C are the work frame 15, respectively.
An automatic construction device installed facing the hoistway wall surface 19 performs various tasks such as drilling, cleaning, bolt supply, and bolt driving into the hoistway wall surface 19. 31 is a level attached to the work platform frame 15.

Next, the operation of the working device configured as described above will be explained using guide rail installation as an example. First, since it is not necessary to drill the holes for the anchor bolts 6 at the lowest position and the position adjacent thereto while riding on the workbench frame, the anchor bolts 6 and the mounting brackets 5 are drilled in advance and installed. When it becomes impossible to perform drilling and installation work without the work platform frame, the work device having the above structure is activated.

First, the automatic construction devices 30A to 30C push the hydraulic telescopic lifting legs 23A to 23C of the lower fixing device so as to face the anchor bolt fixing position. At this time, the lower end of each of these legs 23A to 23C is connected to the hoistway 1.
It has arrived at the bottom of pit 1P. Further, the laser oscillation device 13 and the light receiver 16 on the work platform frame 15 are designed to be substantially aligned on a vertical line. When the automatic construction devices 30A to 30D are in positions facing the drilling positions, the legs 23A to 23C
stop the extension of At the same time, the hydraulic positioning device 18 operates to push the plunger 20 against the hoistway wall surface 19. Then, the control device 17 calculates the moving direction and moving distance of the work platform frame from the current value from the light receiver 16, and each of the hydraulic positioning devices 18
A signal is sent to each control valve opening/closing circuit to adjust the amount of protrusion of each plunger 20 and move the work platform frame in two horizontal directions. This operation is performed by the laser beam 14
This continues until the centers of the light receivers 16 coincide, and then a predetermined pressure is applied to each plunger 20 to determine the vertical position of the work frame 15.

Of course, before starting the vertical positioning work, the work platform frame 15 may be slightly moved by the hydraulic telescopic lifting legs 23A to 23C so that the work platform frame 15 is level with the level 31 to complete the horizontal centering work. Needless to say.

After the vertical positioning of the work platform frame 15 is completed, the automatic construction devices 30A to 30C are moved to a position opposite to the anchor bolt driving position, and the horizontal distance from the work platform frame 15 to the hoistway wall surface 19 is measured. Drill a hole. The depth of the holes is determined by the horizontal distance from the work platform frame 15 to the hoistway wall surface 19, and not all holes are necessarily of the same depth. After drilling the hole, the same device is used to clean the hole, and the anchor bolt 6 is inserted into the hole and driven into the hole.

From drilling to driving the anchor bolt 6, it is necessary to repeatedly release the tension of the plunger 20, raise the hydraulic telescoping legs 23A to 23C, and perform vertical positioning and horizontal centering by tensioning the plunger 20. Construct at specific locations. Next, centering devices 28A and 28B, 2 arranged above and below
Grasp the guide rails 4 and 4' with 8C, 28D, 29A and 29B, and move to the guide rail mounting position. In this state, while holding the mounting brackets 5 at the centering positions on the guide rails 4, 4' and the anchor bolts 6 erected on the hoistway wall surface 19,
Firmly tighten and fix by a worker or an automatic machine.

Note that the guide rails 4, 4' have already been carried into the hoistway 1 as in the conventional case, and are temporarily arranged so as to be connected over the entire length or several floors.

After fixing the guide rails 4, 4', the centering device grasps the guide rails 4, 4' and pulls them with a predetermined pressure in the direction of the opposing guide rail to confirm that the guide rails 4, 4' do not move. Then release the grasp.

Next, the engaging pieces 2 of the upper fixing devices 21A, 21B
4A, 24B extend and engage the nearest mounting bracket 5 through both sides of the guide rail 4. At this time, in order to facilitate the engagement of the engaging pieces 24A, 24B, the hydraulic telescopic lifting legs 23A, 23B may be slightly moved.

When the engagement onto the mounting bracket 5 is completed, the safety device 26 provided adjacent to the engagement piece grips the guide rail 4 and prevents the engagement from slipping.

After that, the hydraulic telescopic lifting legs 23A to 23C of the lower fixing devices 22A to 22C are retracted, and the mounting bracket 5
The engaging pieces 25A to 25D are arranged to face each other in the position shown in FIG.
to engage. At the same time, the safety device 27 adjacent to the engaging pieces 25A, 25B grasps the guide rail 4 to prevent the engagement from slipping.

This completes the installation of the lowest guide rail. Furthermore, when continuing to install the second and third guide rails, since the lower fixing devices 22A to 22C have already engaged on the mounting bracket 5 with their legs retracted, the safety devices of the upper fixing devices 21A and 21B 26
is released, and the engagement between the engagement pieces 24A, 24B and the mounting bracket 5 is also released. At the same time, the plungers 20 of each hydraulic positioning device 18 protruding from the hoistway wall surface 19 are retracted.

In this state, the lower fixing device 22A~
Extend the hydraulic telescopic lifting legs 23A to 23C of 22C so that the automatic construction device 30A is at a height opposite to the anchor bolt fixing position, perform the above-mentioned vertical positioning work and horizontal centering work at this position, The anchor bolts 6 and the guide rails 4, 4' are installed.

The operation of each device on the work platform frame 15 is automatically performed by programming the control device 17, but instead of this, the worker may operate each device as necessary. .

By the way, in order to further improve safety when the work platform frame 15 is raised, an upper fixing device 21 is provided.
If A, 21B are not operating normally, control is performed such that the lower fixing devices 22A, 22B cannot be released. In addition, the lower fixing device 22A~
The telescopic distance of the hydraulic telescopic lifting legs 23A to 23C of 22C is approximately the same as the mounting pitch of the guide rail mounting bracket 5.

As explained above, the lifting and lowering of the work platform frame 15, the attachment of the anchor bolts 6, and the positioning of the guide rails are mechanized, and the operator only has to fix the mounting brackets 5 to the guide rails 4, 4' and the anchor bolts 6. Furthermore, since this work can be performed on the work floor 15F of the work platform frame 15, stability is high even when working at heights. Furthermore, in order to automatically move up and down using the mounting bracket 5 as a scaffold after the guide rails 4 and 4' are installed, the device of this embodiment is configured to install the guide rails after installing the equipment in the machine room. Otherwise, the inconvenience of not being able to start work is eliminated, and the elevator installation time can be shortened.

Incidentally, in the above embodiment, the vertical reference line was used by oscillating the laser beam 14, but it is also possible to hang a piano wire and use this as the vertical reference line as in the conventional case. However, if piano wire is used, it is difficult to establish standards because the piano wire will naturally sway if it is touched during construction or if the building shakes due to an earthquake. However, laser light does not have the same disadvantages as the piano wire.

Furthermore, although hydraulic pressure was used for positioning and raising/lowering in the above embodiments, the content of the present invention does not change even if a rack-and-pinion system, a motor gear system, or the like is used instead of hydraulic pressure.

In addition, although the embodiment described above relates to the installation of a guide rail, it is of course applicable to the installation of other equipment installed in a hoistway.

In this way, the present invention mechanizes most of the work in the hoistway and greatly reduces the time required for workers to perform the work.The work time is shortened, and the worker can perform various positioning tasks as well as self-elevating. It is safe because the work is done on a workbench frame that can be used. In addition, there is no need to assemble scaffolds, move between scaffolds, or install a hoist in the machine room to raise and lower the work platform as in the past, and elevator installation time is also shortened. Can be done.

[Brief explanation of drawings]

1 and 2 are perspective views showing the conventional guide rail installation state, FIG. 3 is a perspective view showing an example of the working state of the hoistway working device according to the present invention, and FIG. 4 is the present invention. FIG. 5 is a front view showing the hoistway working device according to the invention, and FIG. 5 is a right side view thereof. 14...Laser light, 15...Work platform frame, 16...
... Light receiver, 17 ... Control device, 18 ... Hydraulic positioning device, 21A, 21B ... Upper fixing device, 2
2A~22C...Lower fixing device, 23A~23C
...Hydraulic telescopic lifting legs, 28A to 28D, 29
A, 29B...Centering device.

Claims (1)

[Scope of Claims] 1. A work platform frame provided with a vertical reference device that creates a vertical reference line in the hoistway, a detection device that detects the vertical reference line, and a work platform frame provided on the work platform frame. a posture holding device that holds the guide rail horizontally in line with the vertical reference line, a guide rail centering device that is provided on the work platform frame and that centers the guide rail with respect to the vertical reference line, and the work platform An in-hoistway working device comprising a lifting device provided on a frame and operating along the guide rail. 2. A work platform frame equipped with a vertical reference device that creates a vertical reference line in the hoistway, a detection device that detects the vertical reference line, and a work platform frame provided on the work platform frame to align the work platform frame with the vertical reference line. a posture holding device that aligns and holds the guide rail horizontally; a guide rail centering device that is provided on the work platform frame and that centers the guide rail with respect to the vertical reference line; An in-hoistway working device comprising a lifting device that operates along a guide rail, and a control device that controls the operation of each device on the work platform frame. 3. A work platform frame equipped with a vertical reference device that creates a vertical reference line in the hoistway, a detection device that detects the vertical reference line, and a work platform frame provided on the work platform frame to align the work platform frame with the vertical reference line. a posture holding device that aligns and holds the guide rail horizontally; a guide rail centering device that is provided on the work platform frame and that centers the guide rail with respect to the vertical reference line; a lifting device that operates along a guide rail; a construction device that is provided on the work platform frame and is provided facing the hoistway wall surface; and a control device that controls the operation of each device on the work platform frame. A hoistway working device equipped with: