JPH0774075B2 - Remodeling of elevator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for modifying an elevator by modifying an existing elevator into a new elevator.

[Conventional technology]

Elevators are regarded as important means of transportation within buildings, and are installed in all buildings with five or more floors. While this elevator has been in operation for many years, the car may be damaged, its performance may deteriorate, its design may become obsolete, or new needs such as speed improvement and energy saving may be required. The elevator may be modified for some reason. Conventionally, in order to carry out this remodeling, the elevator was completely stopped for a period of one month, for example, and the existing car, hoisting machine, doorway parts, etc. were removed during this period, and then the new car, They were assembling hoisting machines and doorway parts.

This method is not so problematic in a building that has two or more elevators side by side, because it can be paused one by one and remodeled, but in the case of only one elevator like a small building, it will take a long time. I will sleep for
There has been a problem of causing a great deal of trouble to users.

For this reason, recently, it has been proposed to use only Saturday and Sunday holidays and partially remodel it.
Although it can be applied to office buildings where Sunday is a holiday, it cannot be applied to buildings without holidays such as apartments. There was also a problem that it was difficult to secure workers for work on Saturdays and Sundays.

As a method of solving these problems, a temporary machine room equipped with a temporary hoisting machine is provided on the upper floor of the existing hoistway, and the temporary or hoisting car is used to lift or lower the existing or temporary car. Proposals have been made to allow service and assemble a new hoisting machine or car during this service period. With this method, the temporary hoisting machine and the car can be installed, and the elevator can be stopped only for a limited period such as when removing these, and the effect of reducing the period of inconvenience to the user can be achieved. is there.

Note that, as a method related to this kind of remodeling, for example, JP-A-61-64686 and JP-A-61-64687 can be cited.

[Problems to be solved by the invention]

In the above-mentioned proposal, it is necessary to install a temporary machine room including a temporary hoisting machine on the floor near the top floor of the hoistway. Therefore, in the case of a small building or the like, not only a great deal of labor is required for loading and unloading it, but there is also a problem in terms of workability and safety due to work in a narrow space.

The purpose of the present invention is to install a temporary machine room at the top of the hoistway,
It is to eliminate the removal work and improve workability and safety associated with this work.

[Means for solving problems]

The purpose of the above is to provide a temporary machine base pivotally attached to a pulley on the upper part of the hoistway except at least the uppermost floor of the existing elevator, and to wind the main rope connected to the temporary car on the pulley of this machine base, while A temporary hoisting machine for winding and rewinding the other end of the rope is provided at the lower part of the hoistway, and then the temporary car is hoisted and serviced by the temporary hoisting machine, and the existing elevator is operated during this service period. The hoisting machine is changed to a new hoisting machine, and a new car is assembled on the upper part of the temporary machine base. After that, the temporary machine base, the hoisting machine,
Achieved by removing the car.

[Action]

A temporary hoisting machine is provided at the bottom of the hoistway, and the hoisting machine operates the temporary car to provide services during the remodeling work.

Therefore, even if the modification is prolonged, not only does the user not have such a problem, but since the temporary hoisting machine is attached to the lower part of the hoistway, it is not only easy to carry in and carry out,
Workability and safety can be improved.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. First
In the figure, 1 is a hoistway, and a machine room 2 is formed in the upper part of the hoistway 1, and a hoisting machine 3, a deflector 5 and a control panel 6 for controlling the hoisting machine 3 via a machine base 4. Is provided. 7 is a guide rail for counterweights standing upright in the hoistway 1, 8 is a car guide rail, 9 is a landing threshold,
10 is a landing door, 11 is a three-way frame, and 12 is a new car assembled at the top 13 of the hoistway. 14 is the floor 15 on the 8th floor
, A temporary machine base, the other end of which is abutted against the front wall of the hoistway 1, 16 is a pulley pivotally attached to the temporary machine base 14, 17
Is a bracket that fixes the temporary machine base 14. An existing car 18 and a counterweight 19 are hung by a temporary main rope 20 that is wound around a pulley 16, and are installed at the bottom 21 of the hoistway to be serviced by the existing car 18. Also, the counterweight 23 and the counterweight 19 of the temporary hoisting machine 22 are connected by a second rope 24. Reference numeral 25 is a temporary control panel for controlling the temporary hoisting machine 22.

Now, the modification method of the present invention will be described. Before the elevator is remodeled, as is well known, the existing car 18 and the counterweight 19 are hung by the sheave attached to the hoisting machine 3 and the existing main rope (not shown) wound around the deflecting vehicle 5. ing. First, the existing car 18 is lifted to the top floor, the 9th floor, and then the chain car (not shown) attached to the machine room 2 lifts the existing car 18 to a position slightly above the 9th floor. , Lower the counterweight 19 and support it with a shock absorber (not shown), and then remove the existing main rope. Next, operate the chain block to lower the existing car 18 and hold it at a position slightly above the sixth floor. Then, the temporary mechanical base 14 to which the pulley 16 is pivotally attached is fixed to the floor 15 on the eighth floor at one end and to the front wall of the hoistway 1 at the other end via a bracket 17. After that, the temporary main rope 20 is wound around the pulley 16, and the existing car 18 and the counterweight 19 are connected. The counterweight 19 is adjusted to be lighter than the weight of the existing car 18. Further, a work floor for assembling the new cage 12 is attached to the temporary machine base 14. Next, the temporary hoisting machine 22 to which the winding drum 23 is attached and the temporary control board 25 are carried into the hoistway lowermost portion 21 from the first floor and installed, and then the second rope 24 connected to the counterweight 19 One end of is connected to the winding drum 23. In addition, the communication cable hung from the existing car 18 and the call buttons and position indicator cables on each floor (not shown) are connected to the temporary control panel 25 to complete the preparation of the temporary elevator. To do.

As a result, the remodeling work is performed in parallel with the service provided by the temporary elevator. That is, in the machine room 2, the machine base 4, the hoisting machine 3, the deflector 5 and the control panel 6 can be modified from existing ones to new ones regardless of the operation of the temporary elevator. On the other hand, for the newly installed car 12, an operator rides on a work floor attached to a temporary machine base 14 to perform an assembly work. Although the remodeling work will be performed directly above the temporary elevator, the work floor that also serves as the partition floor will prevent accidents such as dropping tools.

When the remodeling in the machine room 2 and the assembly of the new car 12 are completed in this way, the existing car 18 is stopped on the 7th floor, and the chain block attached to the machine room 2 makes it a little less than the 7th floor. Lift and hold to the upper position. At this time, the counterweight 19 is supported by a shock absorber (not shown). In this state, the temporary main rope 20, work floor, pulley 16,
Remove the temporary machine base 14 etc. After that, the chain block is operated to suspend the existing car 18 to the first floor and remove it, and also remove the temporary hoisting machine 22 and control panel 25.

Then, install a new main rope (not shown) on the new hoist 3
The sheave and the deflecting wheel 5 attached to the car are wound around the car, and the newly installed car 12 and the counterweight 19 adjusted to a weight commensurate with the weight of the car 12 are hung. Finally, the remodeling work is completed by carrying out the removed existing and temporary parts to the outside.

According to the above-described embodiment, the existing hoisting car can be moved up and down by the temporary hoisting machine provided in the lower part of the hoistway. Therefore, in the vicinity of the top of the hoistway, it is only necessary to attach the temporary machine base 14 having the pulley, and it is not necessary to lift the hoisting machine to the vicinity of the top, assemble or remove them,
It is possible to provide the one excellent in workability and safety.

In the above embodiment, the existing car is used as a temporary car, but the existing car may be removed and a temporary car may be incorporated and used. Further, although the existing counterweight is used, if necessary, the one end of the main rope 20 may be directly connected to the winding drum 23 without using the existing weight.

〔The invention's effect〕

According to the present invention, a temporary machine room equipped with a pulley is provided near the top floor of the hoistway, and a temporary hoisting machine is provided at the lower part of the hoistway.Therefore, installation and removal of these can be performed safely and efficiently. Can be done.

[Brief description of drawings]

FIG. 1 is an overall longitudinal sectional view of an elevator showing a state during a remodeling work using a method for remodeling an elevator according to an embodiment of the present invention. 1 ... Hoistway, 3 ... Hoisting machine, 12 ... New car, 13 ...
… Top of hoistway, 14 …… Temporary machine base, 16 …… Pulley, 18 ……
Existing car, 19 …… Balance weight, 20 …… Temporary main rope, 21 …… Lower part of hoistway, 22 …… Temporary hoisting machine, 23 …… Winding cylinder, 24 …… Second rope.

Claims (3)

[Claims] Claim: What is claimed is: 1. A car and a hoisting machine of an existing elevator are converted into a new car and a hoisting machine, wherein the hoistway except at least the uppermost floor of the existing elevator,
A temporary machine base pivotally attached to the pulley is installed, and the main rope connected to the temporary car is wrapped around the pulley of this machine base, while
A temporary hoisting machine for winding and rewinding the other end of the rope is provided at the lower part of the hoistway, and then the temporary hoisting machine is hoisted and serviced by the temporary hoisting machine, and during the service period, The existing elevator hoist is changed to a new hoist, and a new car is assembled at the upper part of the temporary machine base, and then the temporary machine base, the temporary hoist, and the temporary car are assembled. A method of remodeling an elevator, characterized in that the elevator is removed. 2. The elevator remodeling method according to claim 1, wherein the temporary car is an existing car. 3. One of the main ropes is connected to a temporary car and the other end is connected to an existing counterweight, and the weight of the counterweight is made lighter than the weight of the temporary car.
The method for modifying an elevator according to claim (1), characterized in that a second rope that is wound and unwound by the temporary hoisting machine is connected to the existing counterweight.