JPS63282081A - Method fo main cable replacing construction of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a construction method for replacing the main rope of an existing elevator with a new main rope, and a method of replacing the main rope of an existing elevator with a new main rope, particularly a method of replacing the main rope of an elevator with a new main rope, which is suitable for application in the case of 1:10-ping. This is related to alternative construction methods.

[Conventional technology]

11 to 13 are, for example, Japanese Patent Application Laid-Open No. 61-28767.
This shows the conventional elevator main cable replacement method shown in Publication No. 8. First, the upper surface of the upper beam (2) of the car (1) is replaced by the top floor of the car (1) by operating on the heel (1) of the elevator. (
3) The car is stopped at a position that is almost in line with the floor surface (3a).

Next, after fixing the car (1) and the counterweight (4) to prevent them from shifting, the upper beam (2) is moved to the top floor (3).
) and the floor surface (3a).

Then, on this beam (5), a main rope replacement machine (9) having an old main business winding machine (6), a new business feeding machine (7), and a controller (8) is installed.

Next, the tip of the take-up rope (12) is connected to the upper beam (2) of the old main rope (lO) via the fastener (11), and this connection is connected to the car rope shackle (
13), cut the old main rope (10) at the upper end cutting point (14).

Next, a ladder (15) is hung on the counterweight (4), and the old main rope (10) is cut at the lower end cutting point (17) just above the weight rope shackle (16). The old main rope (10) is then removed by the old main rope winder (16).

Next, the new business (18) is fed out from the new business feeding machine (7) and wound around the sheave (21) and deflection wheel (22) of the hoisting machine (20) in the first machine room (19). At the same time, its tip is suspended in the hoistway (23). And its lower end is connected to the weight rope shackle (16).

The above work was carried out by four workers (2
Step 4): Run each main rope one by one.

In each figure, (25) is a spacer for fixing the position of the counterweight (4), (26) is a car shock absorber, and (27) is a spacer for fixing the position of the counterweight (4).
) is the second machine room.

(Problem to be solved by the invention) In the conventional elevator main rope replacement method as described above, it is necessary to repeat the removal of the old main rope (IO) and the installation of the new project (18) for the number of ropes. , there is a problem that the work requires a lot of time.Also, all the work is done by the worker (
24), the main ropes (10) and (18
) becomes difficult to handle manually. In addition, the main ropes (1o) and (18) are slippery because the hemp core is soaked with oil, and the old main rope (lO) may have broken wires. There is a risk of injury to your hands due to the wire, and
There is also a risk that the main ropes (10) and (18) may fall. Also, due to the friction of the new business (18), the sheave (21)
) and deflection wheels (22) or new business (18).
) may wear out.

In addition, a large number of workers (24) are required, and since the work is done manually, the work must be completed before the work time limit, and there is always a hand-held situation after the final work. There are also problems.

This invention was made to solve these problems, and allows the main rope replacement work to be carried out efficiently and safely, with fewer workers, and also to make effective use of the limited work time. The purpose of this study is to obtain a method for replacing the main cables of elevators.

(Means for Solving the Problems) The elevator main cable replacement method according to the present invention sets the top floor or a floor near this as the floor for new business, and sets the bottom floor or a floor near this as the floor for the old main rope. It is set as a cable winding floor, and then operated on the car to stop the upper elevating body with the upper end almost in line with the floor surface of the new business delivery floor, and to fix the positions of the upper elevating body and the lower elevating body, respectively. Next, the old main rope on the lower lifting body side is fixed to a rope fixing jig fixed at a position approximately at the same height as the upper end of the upper lifting body, and is cut at an intermediate cutting point above this fixed part. The main rope is cut at the upper end cutting point directly above the upper elevating body, and the tip of the new project pulled out from the new project feeding machine installed on the new project feeding floor is connected to this cut point. The part between the two cutting points is pulled up into the machine room, the new rope is wrapped around the sheave and deflection wheel of the hoisting machine, and its tip is connected to the upper part of the rope fixing jig of the old main rope. The main rope was cut at the lower end cutting point directly above the lower lifting body, the old main rope was unfixed by the rope fixing jig, and then the old main rope winding machine installed on the old main rope winding floor was used. The old main rope is wound up and the tip of the new cable is guided to the position of the lower elevating body, and then both ends of the new cable are connected to the two elevating bodies.

[Effect]

In this invention, by pulling up the part between the upper end cutting point and the intermediate cutting point of the old main rope into the machine room, the new rope can be wrapped around the sheave and deflection sheave of the hoisting machine in the machine room. ,
This work is carried out in succession to the above work, and by winding up the part between the middle cutting point and the lower end cutting point of the old main rope with the old main rope winding machine, the new rope can be attached to this part continuously. It is done. For this reason, work efficiency can be greatly improved compared to the conventional method in which the removal of the old main rope and the installation of the new rope were performed as separate tasks for each rope. At the same time, it becomes possible to perform the work with fewer workers.

In addition, the main rope replacement work, except for the machine room, is done using the new rope payout machine and the old main rope winder, and there is no need to handle the main rope manually, so There is no need to hold the old main rope, which could cause it to break, and there is no risk of injury to workers or falling of the main rope due to holding the old main rope.

In addition, replacement of the main rope between the upper end cutting point and the middle cutting point is as follows:
Although the work is done manually, this part is safe because the main rope is short and lightweight, so there is no risk of your hands slipping and falling.

(Embodiment) FIGS. 1 to 9 show an embodiment of the present invention, and in the figures, the same reference numerals as in FIGS. 11 to 13 indicate the same or corresponding parts.

As shown in FIGS. 1 to 3, a car lifting jig (29) is first attached to the upper part of the uppermost portion 11t (3) of the guide rail (28) on the (1) side. The hook lifting jig (29) has guide rail separate fasteners (29b) arranged in two rows on the plate surface of the plate (29a) as shown in FIG. It is constructed by attaching hanging tools (29c) to the corners, and can be fastened to the guide rail (28) using guide rail separate fasteners (29b) on both sides.

Next, it is operated on the car (1) and the floor surface of the top floor (3) (
3a) and the top surface of the upper beam (2) of (1), the car (1) is stopped at a position where the upper surface of the upper beam (2) of (1) almost coincides with the upper surface of the upper beam (2).

Next, a spacer (25) is inserted into the lower part of the counterweight (4) in consideration of the required run-by, and the counterweight (4) is removed.
At the same time, the position of the counterweight (4) is corrected. Note that the counterweight (4) may be fixed by activating an emergency stop on the counterweight (4) side.

Then, a guide plate (30) is installed between the upper part of the counterweight (4) and the landing one level above the lowest floor.

Next, as shown in Fig. 2, the upper beam (2) and the hanging tool (29c) of the above-mentioned car lifting jig (29) are connected to the base material having the chain block (31) with the rope (32). The upper surface of the upper beam (2) is made to coincide with the floor surface (3a) of the top floor by operating the chain block (31). Then, fix the heel (1) in this position. Note that the speed governor on the car (1) side is left in operation.

Next, the upper beam (2) and the floor surface (3a) of the top floor (3)
A beam (5) is passed between the rope fixing jig (34) and a rope fixing jig (34) is attached to the guide rail (33) on the counterweight (4) side.

This rope fixing jig (34) has a fastener (35) attached to the guide rail (33) as shown in FIGS. 5 and 6.
The mounting bracket (36) is attached via the mounting bracket (36), and the mounting bracket (36)
36) via a screw member (37), and a rope fixing plate (40) fixed to the attachment plate (38) via a fastener (39). The position is set at almost the same height as (5). And the rope fixing plate (40) of this rope fixing jig (34)
includes a fastener (41), a clip (42), and a washer (43).
), each rope of the old main rope (lO) is fixed by the spring seat (44) and nut (45), and the old main rope (10) is fixed at the lower end cutting point ( 17). In addition, the old main rope (
10) to the rope fixing jig (34) and cutting at the lower end cutting point (17) may be performed in reverse order.

Next, the old main rope (10) is cut at the intermediate cutting point (4B) above the rope fixing jig (34) and at the upper end cutting point (14) directly above the car rope shackle (13), and then Remove the car rope shackle (13).

Next, a new business dispensing machine (47) having a controller (48) is installed on the beam (5), and the tip of the new business (18) dispensed from the new business dispensing machine (47) is connected to the handle (1). ) when working on the upper end of the old main rope (1o)
4) Connect directly above. As shown in Fig. 8, this connection method involves thinning the ends of the two parts (10) and (18) to form a ring part with a binder (49), and connecting these ring parts to each other. This is done by wrapping a tape (5o) around it. In this way, both businesses (10)
By making the end of (18) thinner, the connecting part can be easily passed through the grooves of the sheave (21) and deflection wheel (22) in the work described in detail later, and it will not come off from the groove. Never. Also, by wrapping the tape (5o), the exposure of sharp parts is eliminated, so both of the above-mentioned cars (21),
(22) will not be harmed.

After connecting both projects (10) and (18) in this way, the part between the upper end cutting point (14) and the middle cutting point (46) of the old main rope (10) can be connected to the first machine room ( 19) Pull up inside. As a result, the new business (18) will also be installed in the first machine room (
19) and the sheave (21) of the hoisting machine (20)
and a deflection wheel (22). Therefore, the connection between the old main rope (10) and the new business (18) is released, and a weight rope shackle (16) is attached to the terminal of the new business (18).

Next, suspend the tip of the new project (18)' in the hoistway (23), and attach the weight rope shackle (16) at the tip.
) is connected to the upper part of the rope fixing jig (34) of the old main rope (10) using a U-clip bolt or the like.

Next, remove one old main rope (10) connected to the new business (18) from the rope fixing jig (34), and remove this old main rope (10) from the rope fixing jig (34).
The lower end of lO) is wound up by the old main rope winder (51) installed on the conductive plate (30), and the new rope (18 )
Bring out.

By the above work, when the connecting parts of both businesses (10) and (18) have been guided to the counterweight (4) position, the connection between both businesses (10) and (18) is released, and the counterweight is removed. (4) Attach the weight rope shackle (16). As a result, the new business (18) is connected to the counterweight (4).

Next, the main body of the car rope shackle (13) is temporarily attached to the upper beam (2) of the car (1), and the new business (18) is fixed to the rope fixing jig (34). After that, the length of the new project (18) is set and cut.

Next, remove the car rope shackle (13) that had been temporarily attached to the upper beam (2) of the car (1), and install the new business (1).
8), then attach this basket rope shackle (1).
3) to the upper beam (2), and then release the fixation of the new project (18) by the rope fixing jig (34).

Next, the operations after cutting the old main rope (lO) at the intermediate cutting point (46) are repeated for the number of ropes in order.

Next, move the rope fixing jig (34) from the guide rail (33).
), restore the speed governor on the car (1) side, and then remove the car (
1) Fish back. Then, remove the spacer (25) at the bottom of the counterweight (4), and remove the car lifting jig (29) from the guide rail (28) on the car (1) side.

Next, the installation of the new business (18) inspects the situation and stops the car (1) at the intermediate floor of the hoistway (23). Then, the new project (18): correct the glue tension one by one and complete the work.

Conventionally, the removal of the old main rope (10) and the installation of the new main rope (18) had to be performed as separate operations and repeated for the number of ropes, but in this embodiment, Once the old main rope winder (51) is used to wind up the old main rope (10), the new line (18) connected to it can be attached, and main rope replacement can be completed in one direction, increasing work efficiency. In addition to making it possible to significantly improve the number of workers, the number of workers can be reduced from four to three.

In addition, the replacement work for the main ropes (10) and (t8), except for the machine room (19) and (27), was done entirely using the new project feeder (47) and the old main rope winder (51). Therefore, there is no need to manually handle the main ropes (10) and (18), so there is no need to manually handle the main ropes (10) and (18). There are no injuries to workers due to hand-holding, and safety can be greatly improved.

In addition, in the past, work was done manually, so the work had to be completed before the work time limit, and there was always a hand-held situation after the final work, but in this embodiment, all Mechanical power is used for the work, and it is possible to interrupt the work in the middle, so you can complete the work within the limited working time.
It can be used effectively and work can be carried out efficiently. Therefore, it becomes possible to interrupt the work midway and resume it the next day. However, the machine room (19
), (27), the main ropes (10) and (18) have to be manually pulled upwards, but the main ropes (10) and (18) in this part are short and lightweight. Therefore, there is no risk of your hand slipping and falling.

Further, the construction method according to this embodiment is effective when applied in the case of 1:10-bing.

Also, use the car lifting jig (29) to lift the upper beam (2).
Since it is made to match the floor surface (3a) of the top floor (3), the cable feeder (4) installed on the beam (5)
It is easy to level the equipment such as 7).

In addition, the rope fixing jig (34) includes the main rope (10),
Since each rope (18) can be fixed at once, after the ropes are fixed, the old main rope (10) can also be cut at once, further increasing work efficiency.

In addition, since the replacement work for the main ropes (10) and (18) consists of lowering them from above to below, you only need to pay attention to preventing them from falling, and the tips of the main ropes (10) and (18) The main rope (10) curved and passed through the equipment.

(18) There is no problem such as damage to equipment when tension is applied.

Also, the terminal processing of the new element (18) on the counterweight (4) side and the terminal processing of the new element (18) on the side (1) are also performed on the top floor (
3), rope shackle (13), (1
If 8) is the type that performs bavid filling, the bavid is melted using a firearm on the same floor. Therefore, the work with caution is concentrated in one place, eliminating the need for double arrangements for managers and firearms, and cleaning up can be done in one place, which is efficient.

In addition, the new cable unwinding machine (47) is also the old main cable winding machine (51).
) also has a structure in which the main rope is wound around a drum, so it can be configured with the same equipment to rotate forward and reverse. Therefore, it is cheaper than using separate devices. In addition, the new main rope reeling machine (47) may have a structure that does not unwind the main rope beyond the winding capacity of the old main rope reeling machine (51), and for example, it may be a simple device that only has a brake mechanism. can. Therefore, energy saving is possible.

In the above embodiment, the main rope replacement work floor on the car (1) side is the top floor (3), and the main rope replacement floor on the counterweight (4) side is one floor above the bottom floor. , if it is unstoppable (
(e.g. when the emergency stop floor is located or a VIP room is located and entry is prohibited to general workers), the car (1) and counterweight (4) can be placed in the hoistway (23). Although it is more convenient from the viewpoint of workability to move the main rope away from the poles of the main rope (1 or 2
0) and (18) can be easily replaced.

Furthermore, in the above embodiment, the car (1) is an upward elevating body and the counterweight (4) is a downward elevating body. If the old main rope winder (51) is installed near the floor, the cage (
1) and the counterweight (4) may be upside down.

Furthermore, in the above embodiment, the conductive plate (30) is passed between the floor of the floor one floor above the lowest floor and the upper frame of the counterweight (4), but as shown in FIG. The topmost adjustment weight (4a) of the counterweight (4) is connected to the floor of the floor one level above the bottom floor.
A conductive plate (30) may be passed between the two.

〔Effect of the invention〕

As explained above, this invention connects the old main rope and the new rope, and winds up the old main rope by the old main rope winding machine and lets out the new rope by the new rope payout machine during the same operation. This method significantly improves work efficiency and saves labor compared to conventional methods, and also eliminates the need for workers to hold the heavy main rope in their hands. This has the advantage that there is no risk of objects falling, and work safety can be ensured.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a hoistway showing the initial stage of an elevator main cable replacement method according to an embodiment of the present invention, and FIG.
II-II line enlarged cross-sectional view of the figure, Figure 3 is II of Figure 2.
I-III enlarged line sectional view Figure 4 is a perspective view of the heel lifting jig, Figure 5 is an exploded perspective view of the rope fixing jig, Figure 6 is an exploded perspective view of the rope fixing jig.
The figure is a perspective view showing details of the rope fixing part in Fig. 5, Fig. 7 is a view corresponding to Fig. 1 showing an intermediate stage of the main rope replacement method for an elevator according to an embodiment of the present invention, and Fig. 7 is a detailed view of part ■, and FIG. 9 is a view corresponding to FIG.
Fig. 10 is an explanatory diagram of an embodiment different from Fig. 1 showing the installation situation of the guide plate on the counterweight, and Figs. 11 to 13 are diagrams showing the conventional elevator main rope replacement method according to the work procedure. This is a diagram equivalent to Figure 1. (1)...Basket, (3)-...Top floor, (4)...
・Counterweight (10)...Old main rope, (14)-...
Upper end cutting point, (17) - lower end cutting point, (1B)
-...New case, (19)...1st machine room. (20)...Hoisting machine, (21)...Sheave, (22)
)...Deflect car. (23)...Hoistway, (27)...Second machine room,
(29)... Car lifting jig, (34)...
Rope fixing jig. (46) --- Intermediate cutting point, (47) --- Shinji cable unwinding machine (51) --- Former main rope winding machine In each figure, the same reference numerals indicate the same or equivalent parts. do.

Claims (2)

[Claims] (1) Set the top floor or a floor close to this as the new main cable unwinding floor, and set the bottom floor or a floor close to this as the old main cable winding floor. The upper end of the upper elevating body of the counterweight is brought to a stop almost in line with the floor surface of the new main cable payout floor, and the lower elevating body of the car or counterweight and the above-mentioned upper elevating body are each fixed in position. Next, the old main rope on the lower lifting body side was fixed to a rope fixing jig fixed at a position approximately at the same height as the upper end of the upper lifting body, and was cut at an intermediate cutting point above this fixed part. Cut the old main rope at the upper end cut point directly above the upper elevating body, and at this cut point,
Connect the tips of the new main rope pulled out from the new main rope pay-out machine installed on the new main rope pay-out floor, then pull the part of the old main rope between the above two cutting points into the machine room and install the new main rope. Wrap it around the sheave and deflection wheel of the hoisting machine, connect its tip to the upper part of the rope fixing jig of the old main rope, and then cut the old main rope at the lower end cutting point directly above the lower lifting body, The fixation of the old main rope with the rope fixing jig is released, and then the old main rope is wound up with the old main rope winding machine installed on the old main rope winding floor mentioned above, and the tip of the new main rope is moved downward to the position of the elevator. A method for replacing an elevator main rope, the method comprising: guiding the new main rope up to the point where the new main rope is connected, and then connecting both ends of the new main rope to the elevating body. (2) The method for replacing the main rope of an elevator according to claim 1, wherein the upper elevating body is a car and the lower elevating body is a counterweight.